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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
4 | * Copyright (C) International Business Machines Corp., 2002,2005 | |
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 different for reconnection purposes since we never want */ | |
28 | /* to reuse a stale file handle and the caller knows the file handle */ | |
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 "cifsproto.h" | |
38 | #include "cifs_unicode.h" | |
39 | #include "cifs_debug.h" | |
40 | ||
41 | #ifdef CONFIG_CIFS_POSIX | |
42 | static struct { | |
43 | int index; | |
44 | char *name; | |
45 | } protocols[] = { | |
46 | {CIFS_PROT, "\2NT LM 0.12"}, | |
47 | {CIFS_PROT, "\2POSIX 2"}, | |
48 | {BAD_PROT, "\2"} | |
49 | }; | |
50 | #else | |
51 | static struct { | |
52 | int index; | |
53 | char *name; | |
54 | } protocols[] = { | |
55 | {CIFS_PROT, "\2NT LM 0.12"}, | |
56 | {BAD_PROT, "\2"} | |
57 | }; | |
58 | #endif | |
59 | ||
60 | ||
61 | /* Mark as invalid, all open files on tree connections since they | |
62 | were closed when session to server was lost */ | |
63 | static void mark_open_files_invalid(struct cifsTconInfo * pTcon) | |
64 | { | |
65 | struct cifsFileInfo *open_file = NULL; | |
66 | struct list_head * tmp; | |
67 | struct list_head * tmp1; | |
68 | ||
69 | /* list all files open on tree connection and mark them invalid */ | |
70 | write_lock(&GlobalSMBSeslock); | |
71 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { | |
72 | open_file = list_entry(tmp,struct cifsFileInfo, tlist); | |
73 | if(open_file) { | |
74 | open_file->invalidHandle = TRUE; | |
75 | } | |
76 | } | |
77 | write_unlock(&GlobalSMBSeslock); | |
09d1db5c SF |
78 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
79 | to this tcon */ | |
1da177e4 LT |
80 | } |
81 | ||
82 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
83 | static int | |
84 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
85 | void **request_buf /* returned */) | |
86 | { | |
87 | int rc = 0; | |
88 | ||
89 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
90 | check for tcp and smb session status done differently | |
91 | for those three - in the calling routine */ | |
92 | if(tcon) { | |
93 | if((tcon->ses) && (tcon->ses->server)){ | |
94 | struct nls_table *nls_codepage; | |
95 | /* Give Demultiplex thread up to 10 seconds to | |
09d1db5c SF |
96 | reconnect, should be greater than cifs socket |
97 | timeout which is 7 seconds */ | |
1da177e4 LT |
98 | while(tcon->ses->server->tcpStatus == CifsNeedReconnect) { |
99 | wait_event_interruptible_timeout(tcon->ses->server->response_q, | |
100 | (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ); | |
101 | if(tcon->ses->server->tcpStatus == CifsNeedReconnect) { | |
102 | /* on "soft" mounts we wait once */ | |
103 | if((tcon->retry == FALSE) || | |
104 | (tcon->ses->status == CifsExiting)) { | |
105 | cFYI(1,("gave up waiting on reconnect in smb_init")); | |
106 | return -EHOSTDOWN; | |
09d1db5c SF |
107 | } /* else "hard" mount - keep retrying |
108 | until process is killed or server | |
109 | comes back on-line */ | |
1da177e4 LT |
110 | } else /* TCP session is reestablished now */ |
111 | break; | |
112 | ||
113 | } | |
114 | ||
115 | nls_codepage = load_nls_default(); | |
116 | /* need to prevent multiple threads trying to | |
117 | simultaneously reconnect the same SMB session */ | |
118 | down(&tcon->ses->sesSem); | |
119 | if(tcon->ses->status == CifsNeedReconnect) | |
09d1db5c SF |
120 | rc = cifs_setup_session(0, tcon->ses, |
121 | nls_codepage); | |
1da177e4 LT |
122 | if(!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
123 | mark_open_files_invalid(tcon); | |
09d1db5c SF |
124 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon |
125 | , nls_codepage); | |
1da177e4 LT |
126 | up(&tcon->ses->sesSem); |
127 | if(rc == 0) | |
128 | atomic_inc(&tconInfoReconnectCount); | |
129 | ||
130 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
131 | /* Removed call to reopen open files here - | |
09d1db5c SF |
132 | it is safer (and faster) to reopen files |
133 | one at a time as needed in read and write */ | |
1da177e4 LT |
134 | |
135 | /* Check if handle based operation so we | |
09d1db5c SF |
136 | know whether we can continue or not without |
137 | returning to caller to reset file handle */ | |
1da177e4 LT |
138 | switch(smb_command) { |
139 | case SMB_COM_READ_ANDX: | |
140 | case SMB_COM_WRITE_ANDX: | |
141 | case SMB_COM_CLOSE: | |
142 | case SMB_COM_FIND_CLOSE2: | |
143 | case SMB_COM_LOCKING_ANDX: { | |
144 | unload_nls(nls_codepage); | |
145 | return -EAGAIN; | |
146 | } | |
147 | } | |
148 | } else { | |
149 | up(&tcon->ses->sesSem); | |
150 | } | |
151 | unload_nls(nls_codepage); | |
152 | ||
153 | } else { | |
154 | return -EIO; | |
155 | } | |
156 | } | |
157 | if(rc) | |
158 | return rc; | |
159 | ||
160 | *request_buf = cifs_small_buf_get(); | |
161 | if (*request_buf == NULL) { | |
162 | /* BB should we add a retry in here if not a writepage? */ | |
163 | return -ENOMEM; | |
164 | } | |
165 | ||
166 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct); | |
167 | ||
168 | #ifdef CONFIG_CIFS_STATS | |
169 | if(tcon != NULL) { | |
170 | atomic_inc(&tcon->num_smbs_sent); | |
171 | } | |
172 | #endif /* CONFIG_CIFS_STATS */ | |
173 | return rc; | |
174 | } | |
175 | ||
176 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
177 | static int | |
178 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
179 | void **request_buf /* returned */ , | |
180 | void **response_buf /* returned */ ) | |
181 | { | |
182 | int rc = 0; | |
183 | ||
184 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
185 | check for tcp and smb session status done differently | |
186 | for those three - in the calling routine */ | |
187 | if(tcon) { | |
188 | if((tcon->ses) && (tcon->ses->server)){ | |
189 | struct nls_table *nls_codepage; | |
09d1db5c SF |
190 | /* Give Demultiplex thread up to 10 seconds to |
191 | reconnect, should be greater than cifs socket | |
192 | timeout which is 7 seconds */ | |
1da177e4 LT |
193 | while(tcon->ses->server->tcpStatus == CifsNeedReconnect) { |
194 | wait_event_interruptible_timeout(tcon->ses->server->response_q, | |
195 | (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ); | |
09d1db5c SF |
196 | if(tcon->ses->server->tcpStatus == |
197 | CifsNeedReconnect) { | |
1da177e4 LT |
198 | /* on "soft" mounts we wait once */ |
199 | if((tcon->retry == FALSE) || | |
200 | (tcon->ses->status == CifsExiting)) { | |
201 | cFYI(1,("gave up waiting on reconnect in smb_init")); | |
202 | return -EHOSTDOWN; | |
09d1db5c SF |
203 | } /* else "hard" mount - keep retrying |
204 | until process is killed or server | |
205 | comes on-line */ | |
1da177e4 LT |
206 | } else /* TCP session is reestablished now */ |
207 | break; | |
208 | ||
209 | } | |
210 | ||
211 | nls_codepage = load_nls_default(); | |
212 | /* need to prevent multiple threads trying to | |
213 | simultaneously reconnect the same SMB session */ | |
214 | down(&tcon->ses->sesSem); | |
215 | if(tcon->ses->status == CifsNeedReconnect) | |
09d1db5c SF |
216 | rc = cifs_setup_session(0, tcon->ses, |
217 | nls_codepage); | |
1da177e4 LT |
218 | if(!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
219 | mark_open_files_invalid(tcon); | |
09d1db5c SF |
220 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
221 | tcon, nls_codepage); | |
1da177e4 LT |
222 | up(&tcon->ses->sesSem); |
223 | if(rc == 0) | |
224 | atomic_inc(&tconInfoReconnectCount); | |
225 | ||
226 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
227 | /* Removed call to reopen open files here - | |
09d1db5c SF |
228 | it is safer (and faster) to reopen files |
229 | one at a time as needed in read and write */ | |
1da177e4 LT |
230 | |
231 | /* Check if handle based operation so we | |
09d1db5c SF |
232 | know whether we can continue or not without |
233 | returning to caller to reset file handle */ | |
1da177e4 LT |
234 | switch(smb_command) { |
235 | case SMB_COM_READ_ANDX: | |
236 | case SMB_COM_WRITE_ANDX: | |
237 | case SMB_COM_CLOSE: | |
238 | case SMB_COM_FIND_CLOSE2: | |
239 | case SMB_COM_LOCKING_ANDX: { | |
240 | unload_nls(nls_codepage); | |
241 | return -EAGAIN; | |
242 | } | |
243 | } | |
244 | } else { | |
245 | up(&tcon->ses->sesSem); | |
246 | } | |
247 | unload_nls(nls_codepage); | |
248 | ||
249 | } else { | |
250 | return -EIO; | |
251 | } | |
252 | } | |
253 | if(rc) | |
254 | return rc; | |
255 | ||
256 | *request_buf = cifs_buf_get(); | |
257 | if (*request_buf == NULL) { | |
258 | /* BB should we add a retry in here if not a writepage? */ | |
259 | return -ENOMEM; | |
260 | } | |
261 | /* Although the original thought was we needed the response buf for */ | |
262 | /* potential retries of smb operations it turns out we can determine */ | |
263 | /* from the mid flags when the request buffer can be resent without */ | |
264 | /* having to use a second distinct buffer for the response */ | |
265 | *response_buf = *request_buf; | |
266 | ||
267 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
268 | wct /*wct */ ); | |
269 | ||
270 | #ifdef CONFIG_CIFS_STATS | |
271 | if(tcon != NULL) { | |
272 | atomic_inc(&tcon->num_smbs_sent); | |
273 | } | |
274 | #endif /* CONFIG_CIFS_STATS */ | |
275 | return rc; | |
276 | } | |
277 | ||
278 | static int validate_t2(struct smb_t2_rsp * pSMB) | |
279 | { | |
280 | int rc = -EINVAL; | |
281 | int total_size; | |
282 | char * pBCC; | |
283 | ||
284 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
285 | /* check for parm and data offset going beyond end of smb */ | |
286 | if(pSMB->hdr.WordCount >= 10) { | |
287 | if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
288 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { | |
289 | /* check that bcc is at least as big as parms + data */ | |
290 | /* check that bcc is less than negotiated smb buffer */ | |
291 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
292 | if(total_size < 512) { | |
293 | total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount); | |
294 | /* BCC le converted in SendReceive */ | |
09d1db5c SF |
295 | pBCC = (pSMB->hdr.WordCount * 2) + |
296 | sizeof(struct smb_hdr) + | |
1da177e4 LT |
297 | (char *)pSMB; |
298 | if((total_size <= (*(u16 *)pBCC)) && | |
299 | (total_size < | |
300 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { | |
301 | return 0; | |
302 | } | |
303 | ||
304 | } | |
305 | } | |
306 | } | |
307 | cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB, | |
308 | sizeof(struct smb_t2_rsp) + 16); | |
309 | return rc; | |
310 | } | |
311 | int | |
312 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
313 | { | |
314 | NEGOTIATE_REQ *pSMB; | |
315 | NEGOTIATE_RSP *pSMBr; | |
316 | int rc = 0; | |
317 | int bytes_returned; | |
318 | struct TCP_Server_Info * server; | |
319 | u16 count; | |
320 | ||
321 | if(ses->server) | |
322 | server = ses->server; | |
323 | else { | |
324 | rc = -EIO; | |
325 | return rc; | |
326 | } | |
327 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
328 | (void **) &pSMB, (void **) &pSMBr); | |
329 | if (rc) | |
330 | return rc; | |
331 | ||
332 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
333 | if (extended_security) | |
334 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
335 | ||
336 | count = strlen(protocols[0].name) + 1; | |
337 | strncpy(pSMB->DialectsArray, protocols[0].name, 30); | |
338 | /* null guaranteed to be at end of source and target buffers anyway */ | |
339 | ||
340 | pSMB->hdr.smb_buf_length += count; | |
341 | pSMB->ByteCount = cpu_to_le16(count); | |
342 | ||
343 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
344 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
345 | if (rc == 0) { | |
346 | server->secMode = pSMBr->SecurityMode; | |
09d1db5c SF |
347 | server->secType = NTLM; /* BB override default for |
348 | NTLMv2 or kerberos v5 */ | |
349 | /* one byte - no need to convert this or EncryptionKeyLen | |
350 | from little endian */ | |
1da177e4 LT |
351 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); |
352 | /* probably no need to store and check maxvcs */ | |
353 | server->maxBuf = | |
354 | min(le32_to_cpu(pSMBr->MaxBufferSize), | |
355 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); | |
356 | server->maxRw = le32_to_cpu(pSMBr->MaxRawSize); | |
357 | cFYI(0, ("Max buf = %d ", ses->server->maxBuf)); | |
358 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); | |
359 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
360 | server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone); | |
361 | /* BB with UTC do we ever need to be using srvr timezone? */ | |
362 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { | |
363 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
364 | CIFS_CRYPTO_KEY_SIZE); | |
365 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
366 | && (pSMBr->EncryptionKeyLength == 0)) { | |
367 | /* decode security blob */ | |
368 | } else | |
369 | rc = -EIO; | |
370 | ||
371 | /* BB might be helpful to save off the domain of server here */ | |
372 | ||
373 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && | |
374 | (server->capabilities & CAP_EXTENDED_SECURITY)) { | |
375 | count = pSMBr->ByteCount; | |
376 | if (count < 16) | |
377 | rc = -EIO; | |
378 | else if (count == 16) { | |
379 | server->secType = RawNTLMSSP; | |
380 | if (server->socketUseCount.counter > 1) { | |
381 | if (memcmp | |
382 | (server->server_GUID, | |
383 | pSMBr->u.extended_response. | |
384 | GUID, 16) != 0) { | |
385 | cFYI(1, | |
09d1db5c | 386 | ("UID of server does not match previous connection to same ip address")); |
1da177e4 LT |
387 | memcpy(server-> |
388 | server_GUID, | |
389 | pSMBr->u. | |
390 | extended_response. | |
391 | GUID, 16); | |
392 | } | |
393 | } else | |
394 | memcpy(server->server_GUID, | |
395 | pSMBr->u.extended_response. | |
396 | GUID, 16); | |
397 | } else { | |
398 | rc = decode_negTokenInit(pSMBr->u. | |
399 | extended_response. | |
400 | SecurityBlob, | |
401 | count - 16, | |
402 | &server->secType); | |
403 | if(rc == 1) { | |
404 | /* BB Need to fill struct for sessetup here */ | |
405 | rc = -EOPNOTSUPP; | |
406 | } else { | |
407 | rc = -EINVAL; | |
408 | } | |
409 | } | |
410 | } else | |
411 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
412 | if(sign_CIFS_PDUs == FALSE) { | |
413 | if(server->secMode & SECMODE_SIGN_REQUIRED) | |
414 | cERROR(1, | |
415 | ("Server requires /proc/fs/cifs/PacketSigningEnabled")); | |
416 | server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); | |
417 | } else if(sign_CIFS_PDUs == 1) { | |
418 | if((server->secMode & SECMODE_SIGN_REQUIRED) == 0) | |
419 | server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); | |
420 | } | |
421 | ||
422 | } | |
423 | if (pSMB) | |
424 | cifs_buf_release(pSMB); | |
425 | return rc; | |
426 | } | |
427 | ||
428 | int | |
429 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
430 | { | |
431 | struct smb_hdr *smb_buffer; | |
432 | struct smb_hdr *smb_buffer_response; /* BB removeme BB */ | |
433 | int rc = 0; | |
434 | int length; | |
435 | ||
436 | cFYI(1, ("In tree disconnect")); | |
437 | /* | |
438 | * If last user of the connection and | |
439 | * connection alive - disconnect it | |
440 | * If this is the last connection on the server session disconnect it | |
441 | * (and inside session disconnect we should check if tcp socket needs | |
442 | * to be freed and kernel thread woken up). | |
443 | */ | |
444 | if (tcon) | |
445 | down(&tcon->tconSem); | |
446 | else | |
447 | return -EIO; | |
448 | ||
449 | atomic_dec(&tcon->useCount); | |
450 | if (atomic_read(&tcon->useCount) > 0) { | |
451 | up(&tcon->tconSem); | |
452 | return -EBUSY; | |
453 | } | |
454 | ||
455 | /* No need to return error on this operation if tid invalidated and | |
456 | closed on server already e.g. due to tcp session crashing */ | |
457 | if(tcon->tidStatus == CifsNeedReconnect) { | |
458 | up(&tcon->tconSem); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | if((tcon->ses == NULL) || (tcon->ses->server == NULL)) { | |
463 | up(&tcon->tconSem); | |
464 | return -EIO; | |
465 | } | |
09d1db5c SF |
466 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
467 | (void **)&smb_buffer); | |
1da177e4 LT |
468 | if (rc) { |
469 | up(&tcon->tconSem); | |
470 | return rc; | |
471 | } else { | |
472 | smb_buffer_response = smb_buffer; /* BB removeme BB */ | |
cd63499c | 473 | } |
1da177e4 LT |
474 | rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response, |
475 | &length, 0); | |
476 | if (rc) | |
966ca923 | 477 | cFYI(1, ("Tree disconnect failed %d", rc)); |
1da177e4 LT |
478 | |
479 | if (smb_buffer) | |
480 | cifs_small_buf_release(smb_buffer); | |
481 | up(&tcon->tconSem); | |
482 | ||
483 | /* No need to return error on this operation if tid invalidated and | |
484 | closed on server already e.g. due to tcp session crashing */ | |
485 | if (rc == -EAGAIN) | |
486 | rc = 0; | |
487 | ||
488 | return rc; | |
489 | } | |
490 | ||
491 | int | |
492 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
493 | { | |
494 | struct smb_hdr *smb_buffer_response; | |
495 | LOGOFF_ANDX_REQ *pSMB; | |
496 | int rc = 0; | |
497 | int length; | |
498 | ||
499 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
500 | if (ses) | |
501 | down(&ses->sesSem); | |
502 | else | |
503 | return -EIO; | |
504 | ||
505 | atomic_dec(&ses->inUse); | |
506 | if (atomic_read(&ses->inUse) > 0) { | |
507 | up(&ses->sesSem); | |
508 | return -EBUSY; | |
509 | } | |
510 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); | |
511 | if (rc) { | |
512 | up(&ses->sesSem); | |
513 | return rc; | |
514 | } | |
515 | ||
516 | smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */ | |
517 | ||
518 | if(ses->server) { | |
519 | if(ses->server->secMode & | |
520 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
521 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
522 | } | |
523 | ||
524 | pSMB->hdr.Uid = ses->Suid; | |
525 | ||
526 | pSMB->AndXCommand = 0xFF; | |
527 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
528 | smb_buffer_response, &length, 0); | |
529 | if (ses->server) { | |
530 | atomic_dec(&ses->server->socketUseCount); | |
531 | if (atomic_read(&ses->server->socketUseCount) == 0) { | |
532 | spin_lock(&GlobalMid_Lock); | |
533 | ses->server->tcpStatus = CifsExiting; | |
534 | spin_unlock(&GlobalMid_Lock); | |
535 | rc = -ESHUTDOWN; | |
536 | } | |
537 | } | |
538 | if (pSMB) | |
539 | cifs_small_buf_release(pSMB); | |
540 | up(&ses->sesSem); | |
541 | ||
542 | /* if session dead then we do not need to do ulogoff, | |
543 | since server closed smb session, no sense reporting | |
544 | error */ | |
545 | if (rc == -EAGAIN) | |
546 | rc = 0; | |
547 | return rc; | |
548 | } | |
549 | ||
550 | int | |
737b758c SF |
551 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
552 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
553 | { |
554 | DELETE_FILE_REQ *pSMB = NULL; | |
555 | DELETE_FILE_RSP *pSMBr = NULL; | |
556 | int rc = 0; | |
557 | int bytes_returned; | |
558 | int name_len; | |
559 | ||
560 | DelFileRetry: | |
561 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
562 | (void **) &pSMBr); | |
563 | if (rc) | |
564 | return rc; | |
565 | ||
566 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
567 | name_len = | |
737b758c SF |
568 | cifsConvertToUCS((__u16 *) pSMB->fileName, fileName, |
569 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
570 | name_len++; /* trailing null */ |
571 | name_len *= 2; | |
09d1db5c | 572 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
573 | name_len = strnlen(fileName, PATH_MAX); |
574 | name_len++; /* trailing null */ | |
575 | strncpy(pSMB->fileName, fileName, name_len); | |
576 | } | |
577 | pSMB->SearchAttributes = | |
578 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
579 | pSMB->BufferFormat = 0x04; | |
580 | pSMB->hdr.smb_buf_length += name_len + 1; | |
581 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
582 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
583 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
584 | if (rc) { | |
585 | cFYI(1, ("Error in RMFile = %d", rc)); | |
586 | } | |
587 | #ifdef CONFIG_CIFS_STATS | |
588 | else { | |
589 | atomic_inc(&tcon->num_deletes); | |
590 | } | |
591 | #endif | |
592 | ||
593 | cifs_buf_release(pSMB); | |
594 | if (rc == -EAGAIN) | |
595 | goto DelFileRetry; | |
596 | ||
597 | return rc; | |
598 | } | |
599 | ||
600 | int | |
737b758c SF |
601 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
602 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
603 | { |
604 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
605 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
606 | int rc = 0; | |
607 | int bytes_returned; | |
608 | int name_len; | |
609 | ||
610 | cFYI(1, ("In CIFSSMBRmDir")); | |
611 | RmDirRetry: | |
612 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
613 | (void **) &pSMBr); | |
614 | if (rc) | |
615 | return rc; | |
616 | ||
617 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
618 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
619 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
620 | name_len++; /* trailing null */ |
621 | name_len *= 2; | |
09d1db5c | 622 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
623 | name_len = strnlen(dirName, PATH_MAX); |
624 | name_len++; /* trailing null */ | |
625 | strncpy(pSMB->DirName, dirName, name_len); | |
626 | } | |
627 | ||
628 | pSMB->BufferFormat = 0x04; | |
629 | pSMB->hdr.smb_buf_length += name_len + 1; | |
630 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
631 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
632 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
633 | if (rc) { | |
634 | cFYI(1, ("Error in RMDir = %d", rc)); | |
635 | } | |
636 | #ifdef CONFIG_CIFS_STATS | |
637 | else { | |
638 | atomic_inc(&tcon->num_rmdirs); | |
639 | } | |
640 | #endif | |
641 | ||
642 | cifs_buf_release(pSMB); | |
643 | if (rc == -EAGAIN) | |
644 | goto RmDirRetry; | |
645 | return rc; | |
646 | } | |
647 | ||
648 | int | |
649 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 650 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
651 | { |
652 | int rc = 0; | |
653 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
654 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
655 | int bytes_returned; | |
656 | int name_len; | |
657 | ||
658 | cFYI(1, ("In CIFSSMBMkDir")); | |
659 | MkDirRetry: | |
660 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
661 | (void **) &pSMBr); | |
662 | if (rc) | |
663 | return rc; | |
664 | ||
665 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
666 | name_len = cifsConvertToUCS((__u16 *) pSMB->DirName, name, |
667 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
668 | name_len++; /* trailing null */ |
669 | name_len *= 2; | |
09d1db5c | 670 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
671 | name_len = strnlen(name, PATH_MAX); |
672 | name_len++; /* trailing null */ | |
673 | strncpy(pSMB->DirName, name, name_len); | |
674 | } | |
675 | ||
676 | pSMB->BufferFormat = 0x04; | |
677 | pSMB->hdr.smb_buf_length += name_len + 1; | |
678 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
679 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
680 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
681 | if (rc) { | |
682 | cFYI(1, ("Error in Mkdir = %d", rc)); | |
683 | } | |
684 | #ifdef CONFIG_CIFS_STATS | |
685 | else { | |
686 | atomic_inc(&tcon->num_mkdirs); | |
687 | } | |
688 | #endif | |
689 | cifs_buf_release(pSMB); | |
690 | if (rc == -EAGAIN) | |
691 | goto MkDirRetry; | |
692 | return rc; | |
693 | } | |
694 | ||
695 | int | |
696 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
697 | const char *fileName, const int openDisposition, | |
698 | const int access_flags, const int create_options, __u16 * netfid, | |
699 | int *pOplock, FILE_ALL_INFO * pfile_info, | |
737b758c | 700 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
701 | { |
702 | int rc = -EACCES; | |
703 | OPEN_REQ *pSMB = NULL; | |
704 | OPEN_RSP *pSMBr = NULL; | |
705 | int bytes_returned; | |
706 | int name_len; | |
707 | __u16 count; | |
708 | ||
709 | openRetry: | |
710 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
711 | (void **) &pSMBr); | |
712 | if (rc) | |
713 | return rc; | |
714 | ||
715 | pSMB->AndXCommand = 0xFF; /* none */ | |
716 | ||
717 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
718 | count = 1; /* account for one byte pad to word boundary */ | |
719 | name_len = | |
737b758c SF |
720 | cifsConvertToUCS((__u16 *) (pSMB->fileName + 1), |
721 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
722 | name_len++; /* trailing null */ |
723 | name_len *= 2; | |
724 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 725 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
726 | count = 0; /* no pad */ |
727 | name_len = strnlen(fileName, PATH_MAX); | |
728 | name_len++; /* trailing null */ | |
729 | pSMB->NameLength = cpu_to_le16(name_len); | |
730 | strncpy(pSMB->fileName, fileName, name_len); | |
731 | } | |
732 | if (*pOplock & REQ_OPLOCK) | |
733 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
734 | else if (*pOplock & REQ_BATCHOPLOCK) { | |
735 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
736 | } | |
737 | pSMB->DesiredAccess = cpu_to_le32(access_flags); | |
738 | pSMB->AllocationSize = 0; | |
739 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
740 | /* XP does not handle ATTR_POSIX_SEMANTICS */ | |
741 | /* but it helps speed up case sensitive checks for other | |
742 | servers such as Samba */ | |
743 | if (tcon->ses->capabilities & CAP_UNIX) | |
744 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
745 | ||
746 | /* if ((omode & S_IWUGO) == 0) | |
747 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/ | |
748 | /* Above line causes problems due to vfs splitting create into two | |
749 | pieces - need to set mode after file created not while it is | |
750 | being created */ | |
751 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
752 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
753 | pSMB->CreateOptions = cpu_to_le32(create_options); | |
09d1db5c SF |
754 | /* BB Expirement with various impersonation levels and verify */ |
755 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
756 | pSMB->SecurityFlags = |
757 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
758 | ||
759 | count += name_len; | |
760 | pSMB->hdr.smb_buf_length += count; | |
761 | ||
762 | pSMB->ByteCount = cpu_to_le16(count); | |
763 | /* long_op set to 1 to allow for oplock break timeouts */ | |
764 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
765 | (struct smb_hdr *) pSMBr, &bytes_returned, 1); | |
766 | if (rc) { | |
767 | cFYI(1, ("Error in Open = %d", rc)); | |
768 | } else { | |
09d1db5c | 769 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
770 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
771 | /* Let caller know file was created so we can set the mode. */ | |
772 | /* Do we care about the CreateAction in any other cases? */ | |
773 | if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) | |
774 | *pOplock |= CIFS_CREATE_ACTION; | |
775 | if(pfile_info) { | |
776 | memcpy((char *)pfile_info,(char *)&pSMBr->CreationTime, | |
777 | 36 /* CreationTime to Attributes */); | |
778 | /* the file_info buf is endian converted by caller */ | |
779 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
780 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
781 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
782 | } | |
783 | ||
784 | #ifdef CONFIG_CIFS_STATS | |
785 | atomic_inc(&tcon->num_opens); | |
786 | #endif | |
787 | } | |
788 | cifs_buf_release(pSMB); | |
789 | if (rc == -EAGAIN) | |
790 | goto openRetry; | |
791 | return rc; | |
792 | } | |
793 | ||
794 | /* If no buffer passed in, then caller wants to do the copy | |
795 | as in the case of readpages so the SMB buffer must be | |
796 | freed by the caller */ | |
797 | ||
798 | int | |
799 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, | |
800 | const int netfid, const unsigned int count, | |
801 | const __u64 lseek, unsigned int *nbytes, char **buf) | |
802 | { | |
803 | int rc = -EACCES; | |
804 | READ_REQ *pSMB = NULL; | |
805 | READ_RSP *pSMBr = NULL; | |
806 | char *pReadData = NULL; | |
807 | int bytes_returned; | |
808 | ||
809 | cFYI(1,("Reading %d bytes on fid %d",count,netfid)); | |
810 | ||
811 | *nbytes = 0; | |
812 | rc = smb_init(SMB_COM_READ_ANDX, 12, tcon, (void **) &pSMB, | |
813 | (void **) &pSMBr); | |
814 | if (rc) | |
815 | return rc; | |
816 | ||
817 | /* tcon and ses pointer are checked in smb_init */ | |
818 | if (tcon->ses->server == NULL) | |
819 | return -ECONNABORTED; | |
820 | ||
821 | pSMB->AndXCommand = 0xFF; /* none */ | |
822 | pSMB->Fid = netfid; | |
823 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
824 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); | |
825 | pSMB->Remaining = 0; | |
826 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
827 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
828 | pSMB->ByteCount = 0; /* no need to do le conversion since it is 0 */ | |
829 | ||
830 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
831 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
832 | if (rc) { | |
833 | cERROR(1, ("Send error in read = %d", rc)); | |
834 | } else { | |
835 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
836 | data_length = data_length << 16; | |
837 | data_length += le16_to_cpu(pSMBr->DataLength); | |
838 | *nbytes = data_length; | |
839 | ||
840 | /*check that DataLength would not go beyond end of SMB */ | |
841 | if ((data_length > CIFSMaxBufSize) | |
842 | || (data_length > count)) { | |
843 | cFYI(1,("bad length %d for count %d",data_length,count)); | |
844 | rc = -EIO; | |
845 | *nbytes = 0; | |
846 | } else { | |
847 | pReadData = | |
848 | (char *) (&pSMBr->hdr.Protocol) + | |
849 | le16_to_cpu(pSMBr->DataOffset); | |
850 | /* if(rc = copy_to_user(buf, pReadData, data_length)) { | |
851 | cERROR(1,("Faulting on read rc = %d",rc)); | |
852 | rc = -EFAULT; | |
853 | }*/ /* can not use copy_to_user when using page cache*/ | |
854 | if(*buf) | |
855 | memcpy(*buf,pReadData,data_length); | |
856 | } | |
857 | } | |
858 | if(*buf) | |
859 | cifs_buf_release(pSMB); | |
860 | else | |
861 | *buf = (char *)pSMB; | |
862 | ||
863 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
864 | since file handle passed in no longer valid */ | |
865 | return rc; | |
866 | } | |
867 | ||
868 | int | |
869 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
870 | const int netfid, const unsigned int count, | |
871 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
872 | const char __user * ubuf, const int long_op) | |
873 | { | |
874 | int rc = -EACCES; | |
875 | WRITE_REQ *pSMB = NULL; | |
876 | WRITE_RSP *pSMBr = NULL; | |
877 | int bytes_returned; | |
878 | __u32 bytes_sent; | |
879 | __u16 byte_count; | |
880 | ||
881 | /* cFYI(1,("write at %lld %d bytes",offset,count));*/ | |
882 | rc = smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB, | |
883 | (void **) &pSMBr); | |
884 | if (rc) | |
885 | return rc; | |
886 | /* tcon and ses pointer are checked in smb_init */ | |
887 | if (tcon->ses->server == NULL) | |
888 | return -ECONNABORTED; | |
889 | ||
890 | pSMB->AndXCommand = 0xFF; /* none */ | |
891 | pSMB->Fid = netfid; | |
892 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
893 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); | |
894 | pSMB->Reserved = 0xFFFFFFFF; | |
895 | pSMB->WriteMode = 0; | |
896 | pSMB->Remaining = 0; | |
897 | ||
898 | /* Can increase buffer size if buffer is big enough in some cases - ie we | |
899 | can send more if LARGE_WRITE_X capability returned by the server and if | |
900 | our buffer is big enough or if we convert to iovecs on socket writes | |
901 | and eliminate the copy to the CIFS buffer */ | |
902 | if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) { | |
903 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); | |
904 | } else { | |
905 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
906 | & ~0xFF; | |
907 | } | |
908 | ||
909 | if (bytes_sent > count) | |
910 | bytes_sent = count; | |
911 | pSMB->DataOffset = | |
912 | cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); | |
913 | if(buf) | |
914 | memcpy(pSMB->Data,buf,bytes_sent); | |
915 | else if(ubuf) { | |
916 | if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) { | |
917 | cifs_buf_release(pSMB); | |
918 | return -EFAULT; | |
919 | } | |
920 | } else { | |
921 | /* No buffer */ | |
922 | cifs_buf_release(pSMB); | |
923 | return -EINVAL; | |
924 | } | |
925 | ||
926 | byte_count = bytes_sent + 1 /* pad */ ; /* BB fix this for sends > 64K */ | |
927 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); | |
928 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
929 | pSMB->hdr.smb_buf_length += bytes_sent+1; | |
930 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
931 | ||
932 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
933 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
934 | if (rc) { | |
935 | cFYI(1, ("Send error in write = %d", rc)); | |
936 | *nbytes = 0; | |
937 | } else { | |
938 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
939 | *nbytes = (*nbytes) << 16; | |
940 | *nbytes += le16_to_cpu(pSMBr->Count); | |
941 | } | |
942 | ||
943 | cifs_buf_release(pSMB); | |
944 | ||
945 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
946 | since file handle passed in no longer valid */ | |
947 | ||
948 | return rc; | |
949 | } | |
950 | ||
951 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
952 | int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
953 | const int netfid, const unsigned int count, | |
954 | const __u64 offset, unsigned int *nbytes, const char __user *buf, | |
955 | const int long_op) | |
956 | { | |
957 | int rc = -EACCES; | |
958 | WRITE_REQ *pSMB = NULL; | |
959 | WRITE_RSP *pSMBr = NULL; | |
960 | /*int bytes_returned;*/ | |
961 | unsigned bytes_sent; | |
962 | __u16 byte_count; | |
963 | ||
964 | rc = small_smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB); | |
965 | ||
966 | if (rc) | |
967 | return rc; | |
968 | ||
969 | pSMBr = (WRITE_RSP *)pSMB; /* BB removeme BB */ | |
970 | ||
971 | /* tcon and ses pointer are checked in smb_init */ | |
972 | if (tcon->ses->server == NULL) | |
973 | return -ECONNABORTED; | |
974 | ||
975 | pSMB->AndXCommand = 0xFF; /* none */ | |
976 | pSMB->Fid = netfid; | |
977 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
978 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); | |
979 | pSMB->Reserved = 0xFFFFFFFF; | |
980 | pSMB->WriteMode = 0; | |
981 | pSMB->Remaining = 0; | |
982 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & ~0xFF; | |
983 | if (bytes_sent > count) | |
984 | bytes_sent = count; | |
985 | pSMB->DataLengthHigh = 0; | |
986 | pSMB->DataOffset = | |
987 | cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); | |
988 | ||
989 | byte_count = bytes_sent + 1 /* pad */ ; | |
990 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent); | |
991 | pSMB->DataLengthHigh = 0; | |
992 | pSMB->hdr.smb_buf_length += byte_count; | |
993 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
994 | ||
995 | /* rc = SendReceive2(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
996 | (struct smb_hdr *) pSMBr, buf, buflen, &bytes_returned, long_op); */ /* BB fixme BB */ | |
997 | if (rc) { | |
998 | cFYI(1, ("Send error in write2 (large write) = %d", rc)); | |
999 | *nbytes = 0; | |
1000 | } else | |
1001 | *nbytes = le16_to_cpu(pSMBr->Count); | |
1002 | ||
1003 | cifs_small_buf_release(pSMB); | |
1004 | ||
1005 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1006 | since file handle passed in no longer valid */ | |
1007 | ||
1008 | return rc; | |
1009 | } | |
1010 | #endif /* CIFS_EXPERIMENTAL */ | |
1011 | ||
1012 | int | |
1013 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1014 | const __u16 smb_file_id, const __u64 len, | |
1015 | const __u64 offset, const __u32 numUnlock, | |
1016 | const __u32 numLock, const __u8 lockType, const int waitFlag) | |
1017 | { | |
1018 | int rc = 0; | |
1019 | LOCK_REQ *pSMB = NULL; | |
1020 | LOCK_RSP *pSMBr = NULL; | |
1021 | int bytes_returned; | |
1022 | int timeout = 0; | |
1023 | __u16 count; | |
1024 | ||
1025 | cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock)); | |
46810cbf SF |
1026 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1027 | ||
1da177e4 LT |
1028 | if (rc) |
1029 | return rc; | |
1030 | ||
46810cbf SF |
1031 | pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */ |
1032 | ||
1da177e4 LT |
1033 | if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
1034 | timeout = -1; /* no response expected */ | |
1035 | pSMB->Timeout = 0; | |
1036 | } else if (waitFlag == TRUE) { | |
1037 | timeout = 3; /* blocking operation, no timeout */ | |
1038 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ | |
1039 | } else { | |
1040 | pSMB->Timeout = 0; | |
1041 | } | |
1042 | ||
1043 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1044 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1045 | pSMB->LockType = lockType; | |
1046 | pSMB->AndXCommand = 0xFF; /* none */ | |
1047 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1048 | ||
1049 | if((numLock != 0) || (numUnlock != 0)) { | |
1050 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); | |
1051 | /* BB where to store pid high? */ | |
1052 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1053 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1054 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1055 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1056 | count = sizeof(LOCKING_ANDX_RANGE); | |
1057 | } else { | |
1058 | /* oplock break */ | |
1059 | count = 0; | |
1060 | } | |
1061 | pSMB->hdr.smb_buf_length += count; | |
1062 | pSMB->ByteCount = cpu_to_le16(count); | |
1063 | ||
1064 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1065 | (struct smb_hdr *) pSMBr, &bytes_returned, timeout); | |
1066 | ||
1067 | if (rc) { | |
1068 | cFYI(1, ("Send error in Lock = %d", rc)); | |
1069 | } | |
46810cbf | 1070 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
1071 | |
1072 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1073 | since file handle passed in no longer valid */ | |
1074 | return rc; | |
1075 | } | |
1076 | ||
1077 | int | |
1078 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1079 | { | |
1080 | int rc = 0; | |
1081 | CLOSE_REQ *pSMB = NULL; | |
1082 | CLOSE_RSP *pSMBr = NULL; | |
1083 | int bytes_returned; | |
1084 | cFYI(1, ("In CIFSSMBClose")); | |
1085 | ||
1086 | /* do not retry on dead session on close */ | |
1087 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
1088 | if(rc == -EAGAIN) | |
1089 | return 0; | |
1090 | if (rc) | |
1091 | return rc; | |
1092 | ||
1093 | pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ | |
1094 | ||
1095 | pSMB->FileID = (__u16) smb_file_id; | |
1096 | pSMB->LastWriteTime = 0; | |
1097 | pSMB->ByteCount = 0; | |
1098 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1099 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1100 | if (rc) { | |
1101 | if(rc!=-EINTR) { | |
1102 | /* EINTR is expected when user ctl-c to kill app */ | |
1103 | cERROR(1, ("Send error in Close = %d", rc)); | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | cifs_small_buf_release(pSMB); | |
1108 | ||
1109 | /* Since session is dead, file will be closed on server already */ | |
1110 | if(rc == -EAGAIN) | |
1111 | rc = 0; | |
1112 | ||
1113 | return rc; | |
1114 | } | |
1115 | ||
1116 | int | |
1117 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1118 | const char *fromName, const char *toName, | |
737b758c | 1119 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1120 | { |
1121 | int rc = 0; | |
1122 | RENAME_REQ *pSMB = NULL; | |
1123 | RENAME_RSP *pSMBr = NULL; | |
1124 | int bytes_returned; | |
1125 | int name_len, name_len2; | |
1126 | __u16 count; | |
1127 | ||
1128 | cFYI(1, ("In CIFSSMBRename")); | |
1129 | renameRetry: | |
1130 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1131 | (void **) &pSMBr); | |
1132 | if (rc) | |
1133 | return rc; | |
1134 | ||
1135 | pSMB->BufferFormat = 0x04; | |
1136 | pSMB->SearchAttributes = | |
1137 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1138 | ATTR_DIRECTORY); | |
1139 | ||
1140 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1141 | name_len = | |
737b758c SF |
1142 | cifsConvertToUCS((__u16 *) pSMB->OldFileName, fromName, |
1143 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1144 | name_len++; /* trailing null */ |
1145 | name_len *= 2; | |
1146 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1147 | /* protocol requires ASCII signature byte on Unicode string */ | |
1148 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1149 | name_len2 = | |
737b758c SF |
1150 | cifsConvertToUCS((__u16 *) &pSMB->OldFileName[name_len + 2], |
1151 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1152 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1153 | name_len2 *= 2; /* convert to bytes */ | |
1154 | } else { /* BB improve the check for buffer overruns BB */ | |
1155 | name_len = strnlen(fromName, PATH_MAX); | |
1156 | name_len++; /* trailing null */ | |
1157 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1158 | name_len2 = strnlen(toName, PATH_MAX); | |
1159 | name_len2++; /* trailing null */ | |
1160 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1161 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1162 | name_len2++; /* trailing null */ | |
1163 | name_len2++; /* signature byte */ | |
1164 | } | |
1165 | ||
1166 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1167 | pSMB->hdr.smb_buf_length += count; | |
1168 | pSMB->ByteCount = cpu_to_le16(count); | |
1169 | ||
1170 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1171 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1172 | if (rc) { | |
1173 | cFYI(1, ("Send error in rename = %d", rc)); | |
1174 | } | |
1175 | ||
1176 | #ifdef CONFIG_CIFS_STATS | |
1177 | else { | |
1178 | atomic_inc(&tcon->num_renames); | |
1179 | } | |
1180 | #endif | |
1181 | ||
1182 | cifs_buf_release(pSMB); | |
1183 | ||
1184 | if (rc == -EAGAIN) | |
1185 | goto renameRetry; | |
1186 | ||
1187 | return rc; | |
1188 | } | |
1189 | ||
1190 | int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon, | |
737b758c SF |
1191 | int netfid, char * target_name, |
1192 | const struct nls_table * nls_codepage, int remap) | |
1da177e4 LT |
1193 | { |
1194 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1195 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
1196 | struct set_file_rename * rename_info; | |
1197 | char *data_offset; | |
1198 | char dummy_string[30]; | |
1199 | int rc = 0; | |
1200 | int bytes_returned = 0; | |
1201 | int len_of_str; | |
1202 | __u16 params, param_offset, offset, count, byte_count; | |
1203 | ||
1204 | cFYI(1, ("Rename to File by handle")); | |
1205 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
1206 | (void **) &pSMBr); | |
1207 | if (rc) | |
1208 | return rc; | |
1209 | ||
1210 | params = 6; | |
1211 | pSMB->MaxSetupCount = 0; | |
1212 | pSMB->Reserved = 0; | |
1213 | pSMB->Flags = 0; | |
1214 | pSMB->Timeout = 0; | |
1215 | pSMB->Reserved2 = 0; | |
1216 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1217 | offset = param_offset + params; | |
1218 | ||
1219 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1220 | rename_info = (struct set_file_rename *) data_offset; | |
1221 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1222 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
1223 | pSMB->SetupCount = 1; | |
1224 | pSMB->Reserved3 = 0; | |
1225 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1226 | byte_count = 3 /* pad */ + params; | |
1227 | pSMB->ParameterCount = cpu_to_le16(params); | |
1228 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1229 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1230 | pSMB->DataOffset = cpu_to_le16(offset); | |
1231 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
1232 | rename_info->overwrite = cpu_to_le32(1); | |
1233 | rename_info->root_fid = 0; | |
1234 | /* unicode only call */ | |
1235 | if(target_name == NULL) { | |
1236 | sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid); | |
737b758c SF |
1237 | len_of_str = cifsConvertToUCS((__u16 *)rename_info->target_name, |
1238 | dummy_string, 24, nls_codepage, remap); | |
1da177e4 | 1239 | } else { |
737b758c SF |
1240 | len_of_str = cifsConvertToUCS((__u16 *)rename_info->target_name, |
1241 | target_name, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1242 | } |
1243 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
1244 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2; | |
1245 | byte_count += count; | |
1246 | pSMB->DataCount = cpu_to_le16(count); | |
1247 | pSMB->TotalDataCount = pSMB->DataCount; | |
1248 | pSMB->Fid = netfid; | |
1249 | pSMB->InformationLevel = | |
1250 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
1251 | pSMB->Reserved4 = 0; | |
1252 | pSMB->hdr.smb_buf_length += byte_count; | |
1253 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1254 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
1255 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1256 | if (rc) { | |
1257 | cFYI(1,("Send error in Rename (by file handle) = %d", rc)); | |
1258 | } | |
1259 | #ifdef CONFIG_CIFS_STATS | |
1260 | else { | |
1261 | atomic_inc(&pTcon->num_t2renames); | |
1262 | } | |
1263 | #endif | |
1264 | cifs_buf_release(pSMB); | |
1265 | ||
1266 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1267 | since file handle passed in no longer valid */ | |
1268 | ||
1269 | return rc; | |
1270 | } | |
1271 | ||
1272 | int | |
1273 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName, | |
1274 | const __u16 target_tid, const char *toName, const int flags, | |
737b758c | 1275 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1276 | { |
1277 | int rc = 0; | |
1278 | COPY_REQ *pSMB = NULL; | |
1279 | COPY_RSP *pSMBr = NULL; | |
1280 | int bytes_returned; | |
1281 | int name_len, name_len2; | |
1282 | __u16 count; | |
1283 | ||
1284 | cFYI(1, ("In CIFSSMBCopy")); | |
1285 | copyRetry: | |
1286 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
1287 | (void **) &pSMBr); | |
1288 | if (rc) | |
1289 | return rc; | |
1290 | ||
1291 | pSMB->BufferFormat = 0x04; | |
1292 | pSMB->Tid2 = target_tid; | |
1293 | ||
1294 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
1295 | ||
1296 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
1297 | name_len = cifsConvertToUCS((__u16 *) pSMB->OldFileName, |
1298 | fromName, PATH_MAX, nls_codepage, | |
1299 | remap); | |
1da177e4 LT |
1300 | name_len++; /* trailing null */ |
1301 | name_len *= 2; | |
1302 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1303 | /* protocol requires ASCII signature byte on Unicode string */ | |
1304 | pSMB->OldFileName[name_len + 1] = 0x00; | |
737b758c SF |
1305 | name_len2 = cifsConvertToUCS((__u16 *)&pSMB->OldFileName[name_len + 2], |
1306 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1307 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1308 | name_len2 *= 2; /* convert to bytes */ | |
1309 | } else { /* BB improve the check for buffer overruns BB */ | |
1310 | name_len = strnlen(fromName, PATH_MAX); | |
1311 | name_len++; /* trailing null */ | |
1312 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1313 | name_len2 = strnlen(toName, PATH_MAX); | |
1314 | name_len2++; /* trailing null */ | |
1315 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1316 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1317 | name_len2++; /* trailing null */ | |
1318 | name_len2++; /* signature byte */ | |
1319 | } | |
1320 | ||
1321 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1322 | pSMB->hdr.smb_buf_length += count; | |
1323 | pSMB->ByteCount = cpu_to_le16(count); | |
1324 | ||
1325 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1326 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1327 | if (rc) { | |
1328 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
1329 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
1330 | } | |
1331 | if (pSMB) | |
1332 | cifs_buf_release(pSMB); | |
1333 | ||
1334 | if (rc == -EAGAIN) | |
1335 | goto copyRetry; | |
1336 | ||
1337 | return rc; | |
1338 | } | |
1339 | ||
1340 | int | |
1341 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
1342 | const char *fromName, const char *toName, | |
1343 | const struct nls_table *nls_codepage) | |
1344 | { | |
1345 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1346 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1347 | char *data_offset; | |
1348 | int name_len; | |
1349 | int name_len_target; | |
1350 | int rc = 0; | |
1351 | int bytes_returned = 0; | |
1352 | __u16 params, param_offset, offset, byte_count; | |
1353 | ||
1354 | cFYI(1, ("In Symlink Unix style")); | |
1355 | createSymLinkRetry: | |
1356 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1357 | (void **) &pSMBr); | |
1358 | if (rc) | |
1359 | return rc; | |
1360 | ||
1361 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1362 | name_len = | |
1363 | cifs_strtoUCS((wchar_t *) pSMB->FileName, fromName, PATH_MAX | |
1364 | /* find define for this maxpathcomponent */ | |
1365 | , nls_codepage); | |
1366 | name_len++; /* trailing null */ | |
1367 | name_len *= 2; | |
1368 | ||
1369 | } else { /* BB improve the check for buffer overruns BB */ | |
1370 | name_len = strnlen(fromName, PATH_MAX); | |
1371 | name_len++; /* trailing null */ | |
1372 | strncpy(pSMB->FileName, fromName, name_len); | |
1373 | } | |
1374 | params = 6 + name_len; | |
1375 | pSMB->MaxSetupCount = 0; | |
1376 | pSMB->Reserved = 0; | |
1377 | pSMB->Flags = 0; | |
1378 | pSMB->Timeout = 0; | |
1379 | pSMB->Reserved2 = 0; | |
1380 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
1381 | InformationLevel) - 4; | |
1382 | offset = param_offset + params; | |
1383 | ||
1384 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1385 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1386 | name_len_target = | |
1387 | cifs_strtoUCS((wchar_t *) data_offset, toName, PATH_MAX | |
1388 | /* find define for this maxpathcomponent */ | |
1389 | , nls_codepage); | |
1390 | name_len_target++; /* trailing null */ | |
1391 | name_len_target *= 2; | |
1392 | } else { /* BB improve the check for buffer overruns BB */ | |
1393 | name_len_target = strnlen(toName, PATH_MAX); | |
1394 | name_len_target++; /* trailing null */ | |
1395 | strncpy(data_offset, toName, name_len_target); | |
1396 | } | |
1397 | ||
1398 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1399 | /* BB find exact max on data count below from sess */ | |
1400 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1401 | pSMB->SetupCount = 1; | |
1402 | pSMB->Reserved3 = 0; | |
1403 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1404 | byte_count = 3 /* pad */ + params + name_len_target; | |
1405 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
1406 | pSMB->ParameterCount = cpu_to_le16(params); | |
1407 | pSMB->TotalDataCount = pSMB->DataCount; | |
1408 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1409 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1410 | pSMB->DataOffset = cpu_to_le16(offset); | |
1411 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
1412 | pSMB->Reserved4 = 0; | |
1413 | pSMB->hdr.smb_buf_length += byte_count; | |
1414 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1415 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1416 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1417 | if (rc) { | |
1418 | cFYI(1, | |
1419 | ("Send error in SetPathInfo (create symlink) = %d", | |
1420 | rc)); | |
1421 | } | |
1422 | ||
1423 | if (pSMB) | |
1424 | cifs_buf_release(pSMB); | |
1425 | ||
1426 | if (rc == -EAGAIN) | |
1427 | goto createSymLinkRetry; | |
1428 | ||
1429 | return rc; | |
1430 | } | |
1431 | ||
1432 | int | |
1433 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
1434 | const char *fromName, const char *toName, | |
737b758c | 1435 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1436 | { |
1437 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1438 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1439 | char *data_offset; | |
1440 | int name_len; | |
1441 | int name_len_target; | |
1442 | int rc = 0; | |
1443 | int bytes_returned = 0; | |
1444 | __u16 params, param_offset, offset, byte_count; | |
1445 | ||
1446 | cFYI(1, ("In Create Hard link Unix style")); | |
1447 | createHardLinkRetry: | |
1448 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1449 | (void **) &pSMBr); | |
1450 | if (rc) | |
1451 | return rc; | |
1452 | ||
1453 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
1454 | name_len = cifsConvertToUCS((__u16 *) pSMB->FileName, toName, |
1455 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1456 | name_len++; /* trailing null */ |
1457 | name_len *= 2; | |
1458 | ||
1459 | } else { /* BB improve the check for buffer overruns BB */ | |
1460 | name_len = strnlen(toName, PATH_MAX); | |
1461 | name_len++; /* trailing null */ | |
1462 | strncpy(pSMB->FileName, toName, name_len); | |
1463 | } | |
1464 | params = 6 + name_len; | |
1465 | pSMB->MaxSetupCount = 0; | |
1466 | pSMB->Reserved = 0; | |
1467 | pSMB->Flags = 0; | |
1468 | pSMB->Timeout = 0; | |
1469 | pSMB->Reserved2 = 0; | |
1470 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
1471 | InformationLevel) - 4; | |
1472 | offset = param_offset + params; | |
1473 | ||
1474 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1475 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1476 | name_len_target = | |
737b758c SF |
1477 | cifsConvertToUCS((__u16 *) data_offset, fromName, PATH_MAX, |
1478 | nls_codepage, remap); | |
1da177e4 LT |
1479 | name_len_target++; /* trailing null */ |
1480 | name_len_target *= 2; | |
1481 | } else { /* BB improve the check for buffer overruns BB */ | |
1482 | name_len_target = strnlen(fromName, PATH_MAX); | |
1483 | name_len_target++; /* trailing null */ | |
1484 | strncpy(data_offset, fromName, name_len_target); | |
1485 | } | |
1486 | ||
1487 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1488 | /* BB find exact max on data count below from sess*/ | |
1489 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1490 | pSMB->SetupCount = 1; | |
1491 | pSMB->Reserved3 = 0; | |
1492 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1493 | byte_count = 3 /* pad */ + params + name_len_target; | |
1494 | pSMB->ParameterCount = cpu_to_le16(params); | |
1495 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1496 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
1497 | pSMB->TotalDataCount = pSMB->DataCount; | |
1498 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1499 | pSMB->DataOffset = cpu_to_le16(offset); | |
1500 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
1501 | pSMB->Reserved4 = 0; | |
1502 | pSMB->hdr.smb_buf_length += byte_count; | |
1503 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1504 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1505 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1506 | if (rc) { | |
1507 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); | |
1508 | } | |
1509 | ||
1510 | cifs_buf_release(pSMB); | |
1511 | if (rc == -EAGAIN) | |
1512 | goto createHardLinkRetry; | |
1513 | ||
1514 | return rc; | |
1515 | } | |
1516 | ||
1517 | int | |
1518 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
1519 | const char *fromName, const char *toName, | |
737b758c | 1520 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1521 | { |
1522 | int rc = 0; | |
1523 | NT_RENAME_REQ *pSMB = NULL; | |
1524 | RENAME_RSP *pSMBr = NULL; | |
1525 | int bytes_returned; | |
1526 | int name_len, name_len2; | |
1527 | __u16 count; | |
1528 | ||
1529 | cFYI(1, ("In CIFSCreateHardLink")); | |
1530 | winCreateHardLinkRetry: | |
1531 | ||
1532 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
1533 | (void **) &pSMBr); | |
1534 | if (rc) | |
1535 | return rc; | |
1536 | ||
1537 | pSMB->SearchAttributes = | |
1538 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1539 | ATTR_DIRECTORY); | |
1540 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
1541 | pSMB->ClusterCount = 0; | |
1542 | ||
1543 | pSMB->BufferFormat = 0x04; | |
1544 | ||
1545 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1546 | name_len = | |
737b758c SF |
1547 | cifsConvertToUCS((__u16 *) pSMB->OldFileName, fromName, |
1548 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1549 | name_len++; /* trailing null */ |
1550 | name_len *= 2; | |
1551 | pSMB->OldFileName[name_len] = 0; /* pad */ | |
1552 | pSMB->OldFileName[name_len + 1] = 0x04; | |
1553 | name_len2 = | |
737b758c SF |
1554 | cifsConvertToUCS((__u16 *)&pSMB->OldFileName[name_len + 2], |
1555 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1556 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1557 | name_len2 *= 2; /* convert to bytes */ | |
1558 | } else { /* BB improve the check for buffer overruns BB */ | |
1559 | name_len = strnlen(fromName, PATH_MAX); | |
1560 | name_len++; /* trailing null */ | |
1561 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1562 | name_len2 = strnlen(toName, PATH_MAX); | |
1563 | name_len2++; /* trailing null */ | |
1564 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1565 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1566 | name_len2++; /* trailing null */ | |
1567 | name_len2++; /* signature byte */ | |
1568 | } | |
1569 | ||
1570 | count = 1 /* string type byte */ + name_len + name_len2; | |
1571 | pSMB->hdr.smb_buf_length += count; | |
1572 | pSMB->ByteCount = cpu_to_le16(count); | |
1573 | ||
1574 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1575 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1576 | if (rc) { | |
1577 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); | |
1578 | } | |
1579 | cifs_buf_release(pSMB); | |
1580 | if (rc == -EAGAIN) | |
1581 | goto winCreateHardLinkRetry; | |
1582 | ||
1583 | return rc; | |
1584 | } | |
1585 | ||
1586 | int | |
1587 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
1588 | const unsigned char *searchName, | |
1589 | char *symlinkinfo, const int buflen, | |
1590 | const struct nls_table *nls_codepage) | |
1591 | { | |
1592 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
1593 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
1594 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
1595 | int rc = 0; | |
1596 | int bytes_returned; | |
1597 | int name_len; | |
1598 | __u16 params, byte_count; | |
1599 | ||
1600 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
1601 | ||
1602 | querySymLinkRetry: | |
1603 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1604 | (void **) &pSMBr); | |
1605 | if (rc) | |
1606 | return rc; | |
1607 | ||
1608 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1609 | name_len = | |
1610 | cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX | |
1611 | /* find define for this maxpathcomponent */ | |
1612 | , nls_codepage); | |
1613 | name_len++; /* trailing null */ | |
1614 | name_len *= 2; | |
1615 | } else { /* BB improve the check for buffer overruns BB */ | |
1616 | name_len = strnlen(searchName, PATH_MAX); | |
1617 | name_len++; /* trailing null */ | |
1618 | strncpy(pSMB->FileName, searchName, name_len); | |
1619 | } | |
1620 | ||
1621 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
1622 | pSMB->TotalDataCount = 0; | |
1623 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1624 | /* BB find exact max data count below from sess structure BB */ | |
1625 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1626 | pSMB->MaxSetupCount = 0; | |
1627 | pSMB->Reserved = 0; | |
1628 | pSMB->Flags = 0; | |
1629 | pSMB->Timeout = 0; | |
1630 | pSMB->Reserved2 = 0; | |
1631 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
1632 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
1633 | pSMB->DataCount = 0; | |
1634 | pSMB->DataOffset = 0; | |
1635 | pSMB->SetupCount = 1; | |
1636 | pSMB->Reserved3 = 0; | |
1637 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
1638 | byte_count = params + 1 /* pad */ ; | |
1639 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
1640 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
1641 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
1642 | pSMB->Reserved4 = 0; | |
1643 | pSMB->hdr.smb_buf_length += byte_count; | |
1644 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1645 | ||
1646 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1647 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1648 | if (rc) { | |
1649 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
1650 | } else { | |
1651 | /* decode response */ | |
1652 | ||
1653 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1654 | if (rc || (pSMBr->ByteCount < 2)) | |
1655 | /* BB also check enough total bytes returned */ | |
1656 | rc = -EIO; /* bad smb */ | |
1657 | else { | |
1658 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1659 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
1660 | ||
1661 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1662 | name_len = UniStrnlen((wchar_t *) ((char *) | |
1663 | &pSMBr->hdr.Protocol +data_offset), | |
1664 | min_t(const int, buflen,count) / 2); | |
737b758c | 1665 | /* BB FIXME investigate remapping reserved chars here */ |
1da177e4 LT |
1666 | cifs_strfromUCS_le(symlinkinfo, |
1667 | (wchar_t *) ((char *)&pSMBr->hdr.Protocol + | |
1668 | data_offset), | |
1669 | name_len, nls_codepage); | |
1670 | } else { | |
1671 | strncpy(symlinkinfo, | |
1672 | (char *) &pSMBr->hdr.Protocol + | |
1673 | data_offset, | |
1674 | min_t(const int, buflen, count)); | |
1675 | } | |
1676 | symlinkinfo[buflen] = 0; | |
1677 | /* just in case so calling code does not go off the end of buffer */ | |
1678 | } | |
1679 | } | |
1680 | cifs_buf_release(pSMB); | |
1681 | if (rc == -EAGAIN) | |
1682 | goto querySymLinkRetry; | |
1683 | return rc; | |
1684 | } | |
1685 | ||
1686 | int | |
1687 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
1688 | const unsigned char *searchName, | |
1689 | char *symlinkinfo, const int buflen,__u16 fid, | |
1690 | const struct nls_table *nls_codepage) | |
1691 | { | |
1692 | int rc = 0; | |
1693 | int bytes_returned; | |
1694 | int name_len; | |
1695 | struct smb_com_transaction_ioctl_req * pSMB; | |
1696 | struct smb_com_transaction_ioctl_rsp * pSMBr; | |
1697 | ||
1698 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
1699 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
1700 | (void **) &pSMBr); | |
1701 | if (rc) | |
1702 | return rc; | |
1703 | ||
1704 | pSMB->TotalParameterCount = 0 ; | |
1705 | pSMB->TotalDataCount = 0; | |
1706 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
1707 | /* BB find exact data count max from sess structure BB */ | |
1708 | pSMB->MaxDataCount = cpu_to_le32(4000); | |
1709 | pSMB->MaxSetupCount = 4; | |
1710 | pSMB->Reserved = 0; | |
1711 | pSMB->ParameterOffset = 0; | |
1712 | pSMB->DataCount = 0; | |
1713 | pSMB->DataOffset = 0; | |
1714 | pSMB->SetupCount = 4; | |
1715 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
1716 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
1717 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
1718 | pSMB->IsFsctl = 1; /* FSCTL */ | |
1719 | pSMB->IsRootFlag = 0; | |
1720 | pSMB->Fid = fid; /* file handle always le */ | |
1721 | pSMB->ByteCount = 0; | |
1722 | ||
1723 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1724 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1725 | if (rc) { | |
1726 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
1727 | } else { /* decode response */ | |
1728 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
1729 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
1730 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) | |
1731 | /* BB also check enough total bytes returned */ | |
1732 | rc = -EIO; /* bad smb */ | |
1733 | else { | |
1734 | if(data_count && (data_count < 2048)) { | |
1735 | char * end_of_smb = pSMBr->ByteCount + (char *)&pSMBr->ByteCount; | |
1736 | ||
1737 | struct reparse_data * reparse_buf = (struct reparse_data *) | |
1738 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
1739 | if((char*)reparse_buf >= end_of_smb) { | |
1740 | rc = -EIO; | |
1741 | goto qreparse_out; | |
1742 | } | |
1743 | if((reparse_buf->LinkNamesBuf + | |
1744 | reparse_buf->TargetNameOffset + | |
1745 | reparse_buf->TargetNameLen) > | |
1746 | end_of_smb) { | |
1747 | cFYI(1,("reparse buf extended beyond SMB")); | |
1748 | rc = -EIO; | |
1749 | goto qreparse_out; | |
1750 | } | |
1751 | ||
1752 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1753 | name_len = UniStrnlen((wchar_t *) | |
1754 | (reparse_buf->LinkNamesBuf + | |
1755 | reparse_buf->TargetNameOffset), | |
1756 | min(buflen/2, reparse_buf->TargetNameLen / 2)); | |
1757 | cifs_strfromUCS_le(symlinkinfo, | |
1758 | (wchar_t *) (reparse_buf->LinkNamesBuf + | |
1759 | reparse_buf->TargetNameOffset), | |
1760 | name_len, nls_codepage); | |
1761 | } else { /* ASCII names */ | |
1762 | strncpy(symlinkinfo,reparse_buf->LinkNamesBuf + | |
1763 | reparse_buf->TargetNameOffset, | |
1764 | min_t(const int, buflen, reparse_buf->TargetNameLen)); | |
1765 | } | |
1766 | } else { | |
1767 | rc = -EIO; | |
1768 | cFYI(1,("Invalid return data count on get reparse info ioctl")); | |
1769 | } | |
1770 | symlinkinfo[buflen] = 0; /* just in case so the caller | |
1771 | does not go off the end of the buffer */ | |
1772 | cFYI(1,("readlink result - %s ",symlinkinfo)); | |
1773 | } | |
1774 | } | |
1775 | qreparse_out: | |
1776 | if (pSMB) | |
1777 | cifs_buf_release(pSMB); | |
1778 | ||
1779 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1780 | since file handle passed in no longer valid */ | |
1781 | ||
1782 | return rc; | |
1783 | } | |
1784 | ||
1785 | #ifdef CONFIG_CIFS_POSIX | |
1786 | ||
1787 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
1788 | static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace) | |
1789 | { | |
1790 | /* u8 cifs fields do not need le conversion */ | |
1791 | ace->e_perm = (__u16)cifs_ace->cifs_e_perm; | |
1792 | ace->e_tag = (__u16)cifs_ace->cifs_e_tag; | |
1793 | ace->e_id = (__u32)le64_to_cpu(cifs_ace->cifs_uid); | |
1794 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ | |
1795 | ||
1796 | return; | |
1797 | } | |
1798 | ||
1799 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
737b758c SF |
1800 | static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen, |
1801 | const int acl_type,const int size_of_data_area) | |
1da177e4 LT |
1802 | { |
1803 | int size = 0; | |
1804 | int i; | |
1805 | __u16 count; | |
1806 | struct cifs_posix_ace * pACE; | |
1807 | struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src; | |
1808 | posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt; | |
1809 | ||
1810 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
1811 | return -EOPNOTSUPP; | |
1812 | ||
1813 | if(acl_type & ACL_TYPE_ACCESS) { | |
1814 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
1815 | pACE = &cifs_acl->ace_array[0]; | |
1816 | size = sizeof(struct cifs_posix_acl); | |
1817 | size += sizeof(struct cifs_posix_ace) * count; | |
1818 | /* check if we would go beyond end of SMB */ | |
1819 | if(size_of_data_area < size) { | |
1820 | cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size)); | |
1821 | return -EINVAL; | |
1822 | } | |
1823 | } else if(acl_type & ACL_TYPE_DEFAULT) { | |
1824 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
1825 | size = sizeof(struct cifs_posix_acl); | |
1826 | size += sizeof(struct cifs_posix_ace) * count; | |
1827 | /* skip past access ACEs to get to default ACEs */ | |
1828 | pACE = &cifs_acl->ace_array[count]; | |
1829 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
1830 | size += sizeof(struct cifs_posix_ace) * count; | |
1831 | /* check if we would go beyond end of SMB */ | |
1832 | if(size_of_data_area < size) | |
1833 | return -EINVAL; | |
1834 | } else { | |
1835 | /* illegal type */ | |
1836 | return -EINVAL; | |
1837 | } | |
1838 | ||
1839 | size = posix_acl_xattr_size(count); | |
1840 | if((buflen == 0) || (local_acl == NULL)) { | |
1841 | /* used to query ACL EA size */ | |
1842 | } else if(size > buflen) { | |
1843 | return -ERANGE; | |
1844 | } else /* buffer big enough */ { | |
1845 | local_acl->a_version = POSIX_ACL_XATTR_VERSION; | |
1846 | for(i = 0;i < count ;i++) { | |
1847 | cifs_convert_ace(&local_acl->a_entries[i],pACE); | |
1848 | pACE ++; | |
1849 | } | |
1850 | } | |
1851 | return size; | |
1852 | } | |
1853 | ||
1854 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace, | |
1855 | const posix_acl_xattr_entry * local_ace) | |
1856 | { | |
1857 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
1858 | ||
1859 | cifs_ace->cifs_e_perm = (__u8)cpu_to_le16(local_ace->e_perm); | |
1860 | cifs_ace->cifs_e_tag = (__u8)cpu_to_le16(local_ace->e_tag); | |
1861 | /* BB is there a better way to handle the large uid? */ | |
1862 | if(local_ace->e_id == -1) { | |
1863 | /* Probably no need to le convert -1 on any arch but can not hurt */ | |
1864 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
1865 | } else | |
1866 | cifs_ace->cifs_uid = (__u64)cpu_to_le32(local_ace->e_id); | |
1867 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ | |
1868 | return rc; | |
1869 | } | |
1870 | ||
1871 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
1872 | static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen, | |
1873 | const int acl_type) | |
1874 | { | |
1875 | __u16 rc = 0; | |
1876 | struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data; | |
1877 | posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL; | |
1878 | int count; | |
1879 | int i; | |
1880 | ||
1881 | if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) | |
1882 | return 0; | |
1883 | ||
1884 | count = posix_acl_xattr_count((size_t)buflen); | |
1885 | cFYI(1,("setting acl with %d entries from buf of length %d and version of %d", | |
1886 | count,buflen,local_acl->a_version)); | |
1887 | if(local_acl->a_version != 2) { | |
1888 | cFYI(1,("unknown POSIX ACL version %d",local_acl->a_version)); | |
1889 | return 0; | |
1890 | } | |
1891 | cifs_acl->version = cpu_to_le16(1); | |
1892 | if(acl_type == ACL_TYPE_ACCESS) | |
1893 | cifs_acl->access_entry_count = count; | |
1894 | else if(acl_type == ACL_TYPE_DEFAULT) | |
1895 | cifs_acl->default_entry_count = count; | |
1896 | else { | |
1897 | cFYI(1,("unknown ACL type %d",acl_type)); | |
1898 | return 0; | |
1899 | } | |
1900 | for(i=0;i<count;i++) { | |
1901 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], | |
1902 | &local_acl->a_entries[i]); | |
1903 | if(rc != 0) { | |
1904 | /* ACE not converted */ | |
1905 | break; | |
1906 | } | |
1907 | } | |
1908 | if(rc == 0) { | |
1909 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); | |
1910 | rc += sizeof(struct cifs_posix_acl); | |
1911 | /* BB add check to make sure ACL does not overflow SMB */ | |
1912 | } | |
1913 | return rc; | |
1914 | } | |
1915 | ||
1916 | int | |
1917 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
1918 | const unsigned char *searchName, | |
1919 | char *acl_inf, const int buflen, const int acl_type, | |
737b758c | 1920 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1921 | { |
1922 | /* SMB_QUERY_POSIX_ACL */ | |
1923 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
1924 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
1925 | int rc = 0; | |
1926 | int bytes_returned; | |
1927 | int name_len; | |
1928 | __u16 params, byte_count; | |
1929 | ||
1930 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); | |
1931 | ||
1932 | queryAclRetry: | |
1933 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1934 | (void **) &pSMBr); | |
1935 | if (rc) | |
1936 | return rc; | |
1937 | ||
1938 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1939 | name_len = | |
737b758c SF |
1940 | cifsConvertToUCS((__u16 *) pSMB->FileName, searchName, |
1941 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1942 | name_len++; /* trailing null */ |
1943 | name_len *= 2; | |
1944 | pSMB->FileName[name_len] = 0; | |
1945 | pSMB->FileName[name_len+1] = 0; | |
1946 | } else { /* BB improve the check for buffer overruns BB */ | |
1947 | name_len = strnlen(searchName, PATH_MAX); | |
1948 | name_len++; /* trailing null */ | |
1949 | strncpy(pSMB->FileName, searchName, name_len); | |
1950 | } | |
1951 | ||
1952 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
1953 | pSMB->TotalDataCount = 0; | |
1954 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1955 | /* BB find exact max data count below from sess structure BB */ | |
1956 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1957 | pSMB->MaxSetupCount = 0; | |
1958 | pSMB->Reserved = 0; | |
1959 | pSMB->Flags = 0; | |
1960 | pSMB->Timeout = 0; | |
1961 | pSMB->Reserved2 = 0; | |
1962 | pSMB->ParameterOffset = cpu_to_le16( | |
1963 | offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
1964 | pSMB->DataCount = 0; | |
1965 | pSMB->DataOffset = 0; | |
1966 | pSMB->SetupCount = 1; | |
1967 | pSMB->Reserved3 = 0; | |
1968 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
1969 | byte_count = params + 1 /* pad */ ; | |
1970 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
1971 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
1972 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
1973 | pSMB->Reserved4 = 0; | |
1974 | pSMB->hdr.smb_buf_length += byte_count; | |
1975 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1976 | ||
1977 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1978 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1979 | if (rc) { | |
1980 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
1981 | } else { | |
1982 | /* decode response */ | |
1983 | ||
1984 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1985 | if (rc || (pSMBr->ByteCount < 2)) | |
1986 | /* BB also check enough total bytes returned */ | |
1987 | rc = -EIO; /* bad smb */ | |
1988 | else { | |
1989 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1990 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
1991 | rc = cifs_copy_posix_acl(acl_inf, | |
1992 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
1993 | buflen,acl_type,count); | |
1994 | } | |
1995 | } | |
1996 | cifs_buf_release(pSMB); | |
1997 | if (rc == -EAGAIN) | |
1998 | goto queryAclRetry; | |
1999 | return rc; | |
2000 | } | |
2001 | ||
2002 | int | |
2003 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
2004 | const unsigned char *fileName, | |
737b758c SF |
2005 | const char *local_acl, const int buflen, |
2006 | const int acl_type, | |
2007 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2008 | { |
2009 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2010 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2011 | char *parm_data; | |
2012 | int name_len; | |
2013 | int rc = 0; | |
2014 | int bytes_returned = 0; | |
2015 | __u16 params, byte_count, data_count, param_offset, offset; | |
2016 | ||
2017 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2018 | setAclRetry: | |
2019 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2020 | (void **) &pSMBr); | |
2021 | if (rc) | |
2022 | return rc; | |
2023 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2024 | name_len = | |
737b758c SF |
2025 | cifsConvertToUCS((__u16 *) pSMB->FileName, fileName, |
2026 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2027 | name_len++; /* trailing null */ |
2028 | name_len *= 2; | |
2029 | } else { /* BB improve the check for buffer overruns BB */ | |
2030 | name_len = strnlen(fileName, PATH_MAX); | |
2031 | name_len++; /* trailing null */ | |
2032 | strncpy(pSMB->FileName, fileName, name_len); | |
2033 | } | |
2034 | params = 6 + name_len; | |
2035 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2036 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
2037 | pSMB->MaxSetupCount = 0; | |
2038 | pSMB->Reserved = 0; | |
2039 | pSMB->Flags = 0; | |
2040 | pSMB->Timeout = 0; | |
2041 | pSMB->Reserved2 = 0; | |
2042 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
2043 | InformationLevel) - 4; | |
2044 | offset = param_offset + params; | |
2045 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2046 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2047 | ||
2048 | /* convert to on the wire format for POSIX ACL */ | |
2049 | data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type); | |
2050 | ||
2051 | if(data_count == 0) { | |
2052 | rc = -EOPNOTSUPP; | |
2053 | goto setACLerrorExit; | |
2054 | } | |
2055 | pSMB->DataOffset = cpu_to_le16(offset); | |
2056 | pSMB->SetupCount = 1; | |
2057 | pSMB->Reserved3 = 0; | |
2058 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2059 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2060 | byte_count = 3 /* pad */ + params + data_count; | |
2061 | pSMB->DataCount = cpu_to_le16(data_count); | |
2062 | pSMB->TotalDataCount = pSMB->DataCount; | |
2063 | pSMB->ParameterCount = cpu_to_le16(params); | |
2064 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2065 | pSMB->Reserved4 = 0; | |
2066 | pSMB->hdr.smb_buf_length += byte_count; | |
2067 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2068 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2069 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2070 | if (rc) { | |
2071 | cFYI(1, ("Set POSIX ACL returned %d", rc)); | |
2072 | } | |
2073 | ||
2074 | setACLerrorExit: | |
2075 | cifs_buf_release(pSMB); | |
2076 | if (rc == -EAGAIN) | |
2077 | goto setAclRetry; | |
2078 | return rc; | |
2079 | } | |
2080 | ||
f654bac2 SF |
2081 | /* BB fix tabs in this function FIXME BB */ |
2082 | int | |
2083 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
2084 | const int netfid, __u64 * pExtAttrBits, __u64 *pMask) | |
2085 | { | |
2086 | int rc = 0; | |
2087 | struct smb_t2_qfi_req *pSMB = NULL; | |
2088 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2089 | int bytes_returned; | |
2090 | __u16 params, byte_count; | |
2091 | ||
2092 | cFYI(1,("In GetExtAttr")); | |
2093 | if(tcon == NULL) | |
2094 | return -ENODEV; | |
2095 | ||
2096 | GetExtAttrRetry: | |
2097 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2098 | (void **) &pSMBr); | |
2099 | if (rc) | |
2100 | return rc; | |
2101 | ||
c67593a0 | 2102 | params = 2 /* level */ +2 /* fid */; |
f654bac2 | 2103 | pSMB->t2.TotalDataCount = 0; |
c67593a0 | 2104 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); |
f654bac2 SF |
2105 | /* BB find exact max data count below from sess structure BB */ |
2106 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2107 | pSMB->t2.MaxSetupCount = 0; | |
2108 | pSMB->t2.Reserved = 0; | |
2109 | pSMB->t2.Flags = 0; | |
2110 | pSMB->t2.Timeout = 0; | |
2111 | pSMB->t2.Reserved2 = 0; | |
c67593a0 SF |
2112 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, |
2113 | Fid) - 4); | |
f654bac2 SF |
2114 | pSMB->t2.DataCount = 0; |
2115 | pSMB->t2.DataOffset = 0; | |
2116 | pSMB->t2.SetupCount = 1; | |
2117 | pSMB->t2.Reserved3 = 0; | |
2118 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
c67593a0 | 2119 | byte_count = params + 1 /* pad */ ; |
f654bac2 SF |
2120 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); |
2121 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
2122 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
c67593a0 | 2123 | pSMB->Pad = 0; |
f654bac2 SF |
2124 | pSMB->Fid = netfid; |
2125 | pSMB->hdr.smb_buf_length += byte_count; | |
2126 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
2127 | ||
2128 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2129 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2130 | if (rc) { | |
2131 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
2132 | } else { | |
2133 | /* decode response */ | |
2134 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2135 | if (rc || (pSMBr->ByteCount < 2)) | |
2136 | /* BB also check enough total bytes returned */ | |
2137 | /* If rc should we check for EOPNOSUPP and | |
2138 | disable the srvino flag? or in caller? */ | |
2139 | rc = -EIO; /* bad smb */ | |
2140 | else { | |
2141 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2142 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2143 | struct file_chattr_info * pfinfo; | |
2144 | /* BB Do we need a cast or hash here ? */ | |
2145 | if(count != 16) { | |
2146 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
2147 | rc = -EIO; | |
2148 | goto GetExtAttrOut; | |
2149 | } | |
2150 | pfinfo = (struct file_chattr_info *) | |
2151 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
2152 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
2153 | *pMask = le64_to_cpu(pfinfo->mask); | |
2154 | } | |
2155 | } | |
2156 | GetExtAttrOut: | |
2157 | cifs_buf_release(pSMB); | |
2158 | if (rc == -EAGAIN) | |
2159 | goto GetExtAttrRetry; | |
2160 | return rc; | |
2161 | } | |
2162 | ||
2163 | ||
2164 | #endif /* CONFIG_POSIX */ | |
1da177e4 LT |
2165 | |
2166 | int | |
2167 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
2168 | const unsigned char *searchName, | |
2169 | FILE_ALL_INFO * pFindData, | |
737b758c | 2170 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2171 | { |
2172 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
2173 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2174 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2175 | int rc = 0; | |
2176 | int bytes_returned; | |
2177 | int name_len; | |
2178 | __u16 params, byte_count; | |
2179 | ||
2180 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
2181 | QPathInfoRetry: | |
2182 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2183 | (void **) &pSMBr); | |
2184 | if (rc) | |
2185 | return rc; | |
2186 | ||
2187 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2188 | name_len = | |
737b758c SF |
2189 | cifsConvertToUCS((__u16 *) pSMB->FileName, searchName, |
2190 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2191 | name_len++; /* trailing null */ |
2192 | name_len *= 2; | |
2193 | } else { /* BB improve the check for buffer overruns BB */ | |
2194 | name_len = strnlen(searchName, PATH_MAX); | |
2195 | name_len++; /* trailing null */ | |
2196 | strncpy(pSMB->FileName, searchName, name_len); | |
2197 | } | |
2198 | ||
2199 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
2200 | pSMB->TotalDataCount = 0; | |
2201 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2202 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
2203 | pSMB->MaxSetupCount = 0; | |
2204 | pSMB->Reserved = 0; | |
2205 | pSMB->Flags = 0; | |
2206 | pSMB->Timeout = 0; | |
2207 | pSMB->Reserved2 = 0; | |
2208 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2209 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
2210 | pSMB->DataCount = 0; | |
2211 | pSMB->DataOffset = 0; | |
2212 | pSMB->SetupCount = 1; | |
2213 | pSMB->Reserved3 = 0; | |
2214 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2215 | byte_count = params + 1 /* pad */ ; | |
2216 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2217 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2218 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
2219 | pSMB->Reserved4 = 0; | |
2220 | pSMB->hdr.smb_buf_length += byte_count; | |
2221 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2222 | ||
2223 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2224 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2225 | if (rc) { | |
2226 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
2227 | } else { /* decode response */ | |
2228 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2229 | ||
2230 | if (rc || (pSMBr->ByteCount < 40)) | |
2231 | rc = -EIO; /* bad smb */ | |
2232 | else if (pFindData){ | |
2233 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2234 | memcpy((char *) pFindData, | |
2235 | (char *) &pSMBr->hdr.Protocol + | |
2236 | data_offset, sizeof (FILE_ALL_INFO)); | |
2237 | } else | |
2238 | rc = -ENOMEM; | |
2239 | } | |
2240 | cifs_buf_release(pSMB); | |
2241 | if (rc == -EAGAIN) | |
2242 | goto QPathInfoRetry; | |
2243 | ||
2244 | return rc; | |
2245 | } | |
2246 | ||
2247 | int | |
2248 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
2249 | const unsigned char *searchName, | |
2250 | FILE_UNIX_BASIC_INFO * pFindData, | |
737b758c | 2251 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2252 | { |
2253 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
2254 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2255 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2256 | int rc = 0; | |
2257 | int bytes_returned = 0; | |
2258 | int name_len; | |
2259 | __u16 params, byte_count; | |
2260 | ||
2261 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
2262 | UnixQPathInfoRetry: | |
2263 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2264 | (void **) &pSMBr); | |
2265 | if (rc) | |
2266 | return rc; | |
2267 | ||
2268 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2269 | name_len = | |
737b758c SF |
2270 | cifsConvertToUCS((__u16 *) pSMB->FileName, searchName, |
2271 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2272 | name_len++; /* trailing null */ |
2273 | name_len *= 2; | |
2274 | } else { /* BB improve the check for buffer overruns BB */ | |
2275 | name_len = strnlen(searchName, PATH_MAX); | |
2276 | name_len++; /* trailing null */ | |
2277 | strncpy(pSMB->FileName, searchName, name_len); | |
2278 | } | |
2279 | ||
2280 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
2281 | pSMB->TotalDataCount = 0; | |
2282 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2283 | /* BB find exact max SMB PDU from sess structure BB */ | |
2284 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2285 | pSMB->MaxSetupCount = 0; | |
2286 | pSMB->Reserved = 0; | |
2287 | pSMB->Flags = 0; | |
2288 | pSMB->Timeout = 0; | |
2289 | pSMB->Reserved2 = 0; | |
2290 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2291 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
2292 | pSMB->DataCount = 0; | |
2293 | pSMB->DataOffset = 0; | |
2294 | pSMB->SetupCount = 1; | |
2295 | pSMB->Reserved3 = 0; | |
2296 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2297 | byte_count = params + 1 /* pad */ ; | |
2298 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2299 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2300 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
2301 | pSMB->Reserved4 = 0; | |
2302 | pSMB->hdr.smb_buf_length += byte_count; | |
2303 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2304 | ||
2305 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2306 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2307 | if (rc) { | |
2308 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
2309 | } else { /* decode response */ | |
2310 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2311 | ||
2312 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
2313 | rc = -EIO; /* bad smb */ | |
2314 | } else { | |
2315 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2316 | memcpy((char *) pFindData, | |
2317 | (char *) &pSMBr->hdr.Protocol + | |
2318 | data_offset, | |
2319 | sizeof (FILE_UNIX_BASIC_INFO)); | |
2320 | } | |
2321 | } | |
2322 | cifs_buf_release(pSMB); | |
2323 | if (rc == -EAGAIN) | |
2324 | goto UnixQPathInfoRetry; | |
2325 | ||
2326 | return rc; | |
2327 | } | |
2328 | ||
2329 | #if 0 /* function unused at present */ | |
2330 | int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon, | |
2331 | const char *searchName, FILE_ALL_INFO * findData, | |
2332 | const struct nls_table *nls_codepage) | |
2333 | { | |
2334 | /* level 257 SMB_ */ | |
2335 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
2336 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
2337 | int rc = 0; | |
2338 | int bytes_returned; | |
2339 | int name_len; | |
2340 | __u16 params, byte_count; | |
2341 | ||
2342 | cFYI(1, ("In FindUnique")); | |
2343 | findUniqueRetry: | |
2344 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2345 | (void **) &pSMBr); | |
2346 | if (rc) | |
2347 | return rc; | |
2348 | ||
2349 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2350 | name_len = | |
737b758c | 2351 | cifsConvertToUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX |
1da177e4 LT |
2352 | /* find define for this maxpathcomponent */ |
2353 | , nls_codepage); | |
2354 | name_len++; /* trailing null */ | |
2355 | name_len *= 2; | |
2356 | } else { /* BB improve the check for buffer overruns BB */ | |
2357 | name_len = strnlen(searchName, PATH_MAX); | |
2358 | name_len++; /* trailing null */ | |
2359 | strncpy(pSMB->FileName, searchName, name_len); | |
2360 | } | |
2361 | ||
2362 | params = 12 + name_len /* includes null */ ; | |
2363 | pSMB->TotalDataCount = 0; /* no EAs */ | |
2364 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2365 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
2366 | pSMB->MaxSetupCount = 0; | |
2367 | pSMB->Reserved = 0; | |
2368 | pSMB->Flags = 0; | |
2369 | pSMB->Timeout = 0; | |
2370 | pSMB->Reserved2 = 0; | |
2371 | pSMB->ParameterOffset = cpu_to_le16( | |
2372 | offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4); | |
2373 | pSMB->DataCount = 0; | |
2374 | pSMB->DataOffset = 0; | |
2375 | pSMB->SetupCount = 1; /* one byte, no need to le convert */ | |
2376 | pSMB->Reserved3 = 0; | |
2377 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
2378 | byte_count = params + 1 /* pad */ ; | |
2379 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2380 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2381 | pSMB->SearchAttributes = | |
2382 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2383 | ATTR_DIRECTORY); | |
2384 | pSMB->SearchCount = cpu_to_le16(16); /* BB increase */ | |
2385 | pSMB->SearchFlags = cpu_to_le16(1); | |
2386 | pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); | |
2387 | pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */ | |
2388 | pSMB->hdr.smb_buf_length += byte_count; | |
2389 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2390 | ||
2391 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2392 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2393 | ||
2394 | if (rc) { | |
2395 | cFYI(1, ("Send error in FindFileDirInfo = %d", rc)); | |
2396 | } else { /* decode response */ | |
2397 | ||
2398 | /* BB fill in */ | |
2399 | } | |
2400 | ||
2401 | cifs_buf_release(pSMB); | |
2402 | if (rc == -EAGAIN) | |
2403 | goto findUniqueRetry; | |
2404 | ||
2405 | return rc; | |
2406 | } | |
2407 | #endif /* end unused (temporarily) function */ | |
2408 | ||
2409 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ | |
2410 | int | |
2411 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
2412 | const char *searchName, | |
2413 | const struct nls_table *nls_codepage, | |
2414 | __u16 * pnetfid, | |
737b758c | 2415 | struct cifs_search_info * psrch_inf, int remap) |
1da177e4 LT |
2416 | { |
2417 | /* level 257 SMB_ */ | |
2418 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
2419 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
2420 | T2_FFIRST_RSP_PARMS * parms; | |
2421 | int rc = 0; | |
2422 | int bytes_returned = 0; | |
2423 | int name_len; | |
2424 | __u16 params, byte_count; | |
2425 | ||
737b758c | 2426 | cFYI(1, ("In FindFirst for %s",searchName)); |
1da177e4 LT |
2427 | |
2428 | findFirstRetry: | |
2429 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2430 | (void **) &pSMBr); | |
2431 | if (rc) | |
2432 | return rc; | |
2433 | ||
2434 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2435 | name_len = | |
737b758c SF |
2436 | cifsConvertToUCS((__u16 *) pSMB->FileName,searchName, |
2437 | PATH_MAX, nls_codepage, remap); | |
2438 | /* We can not add the asterik earlier in case | |
2439 | it got remapped to 0xF03A as if it were part of the | |
2440 | directory name instead of a wildcard */ | |
1da177e4 | 2441 | name_len *= 2; |
737b758c SF |
2442 | pSMB->FileName[name_len] = '\\'; |
2443 | pSMB->FileName[name_len+1] = 0; | |
2444 | pSMB->FileName[name_len+2] = '*'; | |
2445 | pSMB->FileName[name_len+3] = 0; | |
2446 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
2447 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
2448 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 2449 | name_len += 2; |
1da177e4 LT |
2450 | } else { /* BB add check for overrun of SMB buf BB */ |
2451 | name_len = strnlen(searchName, PATH_MAX); | |
2452 | name_len++; /* trailing null */ | |
2453 | /* BB fix here and in unicode clause above ie | |
2454 | if(name_len > buffersize-header) | |
2455 | free buffer exit; BB */ | |
2456 | strncpy(pSMB->FileName, searchName, name_len); | |
2457 | pSMB->FileName[name_len] = 0; /* just in case */ | |
2458 | } | |
2459 | ||
2460 | params = 12 + name_len /* includes null */ ; | |
2461 | pSMB->TotalDataCount = 0; /* no EAs */ | |
2462 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
2463 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
2464 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2465 | pSMB->MaxSetupCount = 0; | |
2466 | pSMB->Reserved = 0; | |
2467 | pSMB->Flags = 0; | |
2468 | pSMB->Timeout = 0; | |
2469 | pSMB->Reserved2 = 0; | |
2470 | byte_count = params + 1 /* pad */ ; | |
2471 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2472 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2473 | pSMB->ParameterOffset = cpu_to_le16( | |
2474 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) - 4); | |
2475 | pSMB->DataCount = 0; | |
2476 | pSMB->DataOffset = 0; | |
2477 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
2478 | pSMB->Reserved3 = 0; | |
2479 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
2480 | pSMB->SearchAttributes = | |
2481 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2482 | ATTR_DIRECTORY); | |
2483 | pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); | |
2484 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
2485 | CIFS_SEARCH_RETURN_RESUME); | |
2486 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
2487 | ||
2488 | /* BB what should we set StorageType to? Does it matter? BB */ | |
2489 | pSMB->SearchStorageType = 0; | |
2490 | pSMB->hdr.smb_buf_length += byte_count; | |
2491 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2492 | ||
2493 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2494 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2495 | ||
2496 | if (rc) {/* BB add logic to retry regular search if Unix search rejected unexpectedly by server */ | |
2497 | /* BB Add code to handle unsupported level rc */ | |
2498 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
2499 | ||
2500 | if (pSMB) | |
2501 | cifs_buf_release(pSMB); | |
2502 | ||
2503 | /* BB eventually could optimize out free and realloc of buf */ | |
2504 | /* for this case */ | |
2505 | if (rc == -EAGAIN) | |
2506 | goto findFirstRetry; | |
2507 | } else { /* decode response */ | |
2508 | /* BB remember to free buffer if error BB */ | |
2509 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2510 | if(rc == 0) { | |
2511 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
2512 | psrch_inf->unicode = TRUE; | |
2513 | else | |
2514 | psrch_inf->unicode = FALSE; | |
2515 | ||
2516 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
2517 | psrch_inf->srch_entries_start = | |
2518 | (char *) &pSMBr->hdr.Protocol + | |
2519 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
2520 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
2521 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
2522 | ||
2523 | if(parms->EndofSearch) | |
2524 | psrch_inf->endOfSearch = TRUE; | |
2525 | else | |
2526 | psrch_inf->endOfSearch = FALSE; | |
2527 | ||
2528 | psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); | |
2529 | psrch_inf->index_of_last_entry = | |
2530 | psrch_inf->entries_in_buffer; | |
1da177e4 LT |
2531 | *pnetfid = parms->SearchHandle; |
2532 | } else { | |
2533 | cifs_buf_release(pSMB); | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | return rc; | |
2538 | } | |
2539 | ||
2540 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
2541 | __u16 searchHandle, struct cifs_search_info * psrch_inf) | |
2542 | { | |
2543 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
2544 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
2545 | T2_FNEXT_RSP_PARMS * parms; | |
2546 | char *response_data; | |
2547 | int rc = 0; | |
2548 | int bytes_returned, name_len; | |
2549 | __u16 params, byte_count; | |
2550 | ||
2551 | cFYI(1, ("In FindNext")); | |
2552 | ||
2553 | if(psrch_inf->endOfSearch == TRUE) | |
2554 | return -ENOENT; | |
2555 | ||
2556 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2557 | (void **) &pSMBr); | |
2558 | if (rc) | |
2559 | return rc; | |
2560 | ||
2561 | params = 14; /* includes 2 bytes of null string, converted to LE below */ | |
2562 | byte_count = 0; | |
2563 | pSMB->TotalDataCount = 0; /* no EAs */ | |
2564 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
2565 | pSMB->MaxDataCount = | |
2566 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2567 | pSMB->MaxSetupCount = 0; | |
2568 | pSMB->Reserved = 0; | |
2569 | pSMB->Flags = 0; | |
2570 | pSMB->Timeout = 0; | |
2571 | pSMB->Reserved2 = 0; | |
2572 | pSMB->ParameterOffset = cpu_to_le16( | |
2573 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
2574 | pSMB->DataCount = 0; | |
2575 | pSMB->DataOffset = 0; | |
2576 | pSMB->SetupCount = 1; | |
2577 | pSMB->Reserved3 = 0; | |
2578 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
2579 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
2580 | pSMB->SearchCount = | |
2581 | cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO)); | |
2582 | /* test for Unix extensions */ | |
2583 | /* if (tcon->ses->capabilities & CAP_UNIX) { | |
2584 | pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX); | |
2585 | psrch_inf->info_level = SMB_FIND_FILE_UNIX; | |
2586 | } else { | |
2587 | pSMB->InformationLevel = | |
2588 | cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); | |
2589 | psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO; | |
2590 | } */ | |
2591 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
2592 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2593 | pSMB->SearchFlags = | |
2594 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
2595 | ||
2596 | name_len = psrch_inf->resume_name_len; | |
2597 | params += name_len; | |
2598 | if(name_len < PATH_MAX) { | |
2599 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); | |
2600 | byte_count += name_len; | |
2601 | } else { | |
2602 | rc = -EINVAL; | |
2603 | goto FNext2_err_exit; | |
2604 | } | |
2605 | byte_count = params + 1 /* pad */ ; | |
2606 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2607 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2608 | pSMB->hdr.smb_buf_length += byte_count; | |
2609 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2610 | ||
2611 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2612 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2613 | ||
2614 | if (rc) { | |
2615 | if (rc == -EBADF) { | |
2616 | psrch_inf->endOfSearch = TRUE; | |
2617 | rc = 0; /* search probably was closed at end of search above */ | |
2618 | } else | |
2619 | cFYI(1, ("FindNext returned = %d", rc)); | |
2620 | } else { /* decode response */ | |
2621 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2622 | ||
2623 | if(rc == 0) { | |
2624 | /* BB fixme add lock for file (srch_info) struct here */ | |
2625 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
2626 | psrch_inf->unicode = TRUE; | |
2627 | else | |
2628 | psrch_inf->unicode = FALSE; | |
2629 | response_data = (char *) &pSMBr->hdr.Protocol + | |
2630 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
2631 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
2632 | response_data = (char *)&pSMBr->hdr.Protocol + | |
2633 | le16_to_cpu(pSMBr->t2.DataOffset); | |
2634 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
2635 | psrch_inf->srch_entries_start = response_data; | |
2636 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
2637 | if(parms->EndofSearch) | |
2638 | psrch_inf->endOfSearch = TRUE; | |
2639 | else | |
2640 | psrch_inf->endOfSearch = FALSE; | |
2641 | ||
2642 | psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); | |
2643 | psrch_inf->index_of_last_entry += | |
2644 | psrch_inf->entries_in_buffer; | |
2645 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */ | |
2646 | ||
2647 | /* BB fixme add unlock here */ | |
2648 | } | |
2649 | ||
2650 | } | |
2651 | ||
2652 | /* BB On error, should we leave previous search buf (and count and | |
2653 | last entry fields) intact or free the previous one? */ | |
2654 | ||
2655 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2656 | since file handle passed in no longer valid */ | |
2657 | FNext2_err_exit: | |
2658 | if (rc != 0) | |
2659 | cifs_buf_release(pSMB); | |
2660 | ||
2661 | return rc; | |
2662 | } | |
2663 | ||
2664 | int | |
2665 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle) | |
2666 | { | |
2667 | int rc = 0; | |
2668 | FINDCLOSE_REQ *pSMB = NULL; | |
2669 | CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */ | |
2670 | int bytes_returned; | |
2671 | ||
2672 | cFYI(1, ("In CIFSSMBFindClose")); | |
2673 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
2674 | ||
2675 | /* no sense returning error if session restarted | |
2676 | as file handle has been closed */ | |
2677 | if(rc == -EAGAIN) | |
2678 | return 0; | |
2679 | if (rc) | |
2680 | return rc; | |
2681 | ||
2682 | pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ | |
2683 | pSMB->FileID = searchHandle; | |
2684 | pSMB->ByteCount = 0; | |
2685 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2686 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2687 | if (rc) { | |
2688 | cERROR(1, ("Send error in FindClose = %d", rc)); | |
2689 | } | |
2690 | cifs_small_buf_release(pSMB); | |
2691 | ||
2692 | /* Since session is dead, search handle closed on server already */ | |
2693 | if (rc == -EAGAIN) | |
2694 | rc = 0; | |
2695 | ||
2696 | return rc; | |
2697 | } | |
2698 | ||
2699 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
2700 | int | |
2701 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
2702 | const unsigned char *searchName, | |
2703 | __u64 * inode_number, | |
737b758c | 2704 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2705 | { |
2706 | int rc = 0; | |
2707 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2708 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2709 | int name_len, bytes_returned; | |
2710 | __u16 params, byte_count; | |
2711 | ||
2712 | cFYI(1,("In GetSrvInodeNum for %s",searchName)); | |
2713 | if(tcon == NULL) | |
2714 | return -ENODEV; | |
2715 | ||
2716 | GetInodeNumberRetry: | |
2717 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2718 | (void **) &pSMBr); | |
2719 | if (rc) | |
2720 | return rc; | |
2721 | ||
2722 | ||
2723 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2724 | name_len = | |
737b758c SF |
2725 | cifsConvertToUCS((__u16 *) pSMB->FileName, searchName, |
2726 | PATH_MAX,nls_codepage, remap); | |
1da177e4 LT |
2727 | name_len++; /* trailing null */ |
2728 | name_len *= 2; | |
2729 | } else { /* BB improve the check for buffer overruns BB */ | |
2730 | name_len = strnlen(searchName, PATH_MAX); | |
2731 | name_len++; /* trailing null */ | |
2732 | strncpy(pSMB->FileName, searchName, name_len); | |
2733 | } | |
2734 | ||
2735 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2736 | pSMB->TotalDataCount = 0; | |
2737 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2738 | /* BB find exact max data count below from sess structure BB */ | |
2739 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2740 | pSMB->MaxSetupCount = 0; | |
2741 | pSMB->Reserved = 0; | |
2742 | pSMB->Flags = 0; | |
2743 | pSMB->Timeout = 0; | |
2744 | pSMB->Reserved2 = 0; | |
2745 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2746 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
2747 | pSMB->DataCount = 0; | |
2748 | pSMB->DataOffset = 0; | |
2749 | pSMB->SetupCount = 1; | |
2750 | pSMB->Reserved3 = 0; | |
2751 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2752 | byte_count = params + 1 /* pad */ ; | |
2753 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2754 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2755 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
2756 | pSMB->Reserved4 = 0; | |
2757 | pSMB->hdr.smb_buf_length += byte_count; | |
2758 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2759 | ||
2760 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2761 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2762 | if (rc) { | |
2763 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
2764 | } else { | |
2765 | /* decode response */ | |
2766 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2767 | if (rc || (pSMBr->ByteCount < 2)) | |
2768 | /* BB also check enough total bytes returned */ | |
2769 | /* If rc should we check for EOPNOSUPP and | |
2770 | disable the srvino flag? or in caller? */ | |
2771 | rc = -EIO; /* bad smb */ | |
2772 | else { | |
2773 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2774 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2775 | struct file_internal_info * pfinfo; | |
2776 | /* BB Do we need a cast or hash here ? */ | |
2777 | if(count < 8) { | |
2778 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); | |
2779 | rc = -EIO; | |
2780 | goto GetInodeNumOut; | |
2781 | } | |
2782 | pfinfo = (struct file_internal_info *) | |
2783 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
2784 | *inode_number = pfinfo->UniqueId; | |
2785 | } | |
2786 | } | |
2787 | GetInodeNumOut: | |
2788 | cifs_buf_release(pSMB); | |
2789 | if (rc == -EAGAIN) | |
2790 | goto GetInodeNumberRetry; | |
2791 | return rc; | |
2792 | } | |
2793 | #endif /* CIFS_EXPERIMENTAL */ | |
2794 | ||
2795 | int | |
2796 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
2797 | const unsigned char *searchName, | |
2798 | unsigned char **targetUNCs, | |
2799 | unsigned int *number_of_UNC_in_array, | |
737b758c | 2800 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2801 | { |
2802 | /* TRANS2_GET_DFS_REFERRAL */ | |
2803 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
2804 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
2805 | struct dfs_referral_level_3 * referrals = NULL; | |
2806 | int rc = 0; | |
2807 | int bytes_returned; | |
2808 | int name_len; | |
2809 | unsigned int i; | |
2810 | char * temp; | |
2811 | __u16 params, byte_count; | |
2812 | *number_of_UNC_in_array = 0; | |
2813 | *targetUNCs = NULL; | |
2814 | ||
2815 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
2816 | if (ses == NULL) | |
2817 | return -ENODEV; | |
2818 | getDFSRetry: | |
2819 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
2820 | (void **) &pSMBr); | |
2821 | if (rc) | |
2822 | return rc; | |
2823 | ||
2824 | pSMB->hdr.Tid = ses->ipc_tid; | |
2825 | pSMB->hdr.Uid = ses->Suid; | |
2826 | if (ses->capabilities & CAP_STATUS32) { | |
2827 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; | |
2828 | } | |
2829 | if (ses->capabilities & CAP_DFS) { | |
2830 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; | |
2831 | } | |
2832 | ||
2833 | if (ses->capabilities & CAP_UNICODE) { | |
2834 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
2835 | name_len = | |
737b758c SF |
2836 | cifsConvertToUCS((__u16 *) pSMB->RequestFileName, |
2837 | searchName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2838 | name_len++; /* trailing null */ |
2839 | name_len *= 2; | |
2840 | } else { /* BB improve the check for buffer overruns BB */ | |
2841 | name_len = strnlen(searchName, PATH_MAX); | |
2842 | name_len++; /* trailing null */ | |
2843 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
2844 | } | |
2845 | ||
2846 | params = 2 /* level */ + name_len /*includes null */ ; | |
2847 | pSMB->TotalDataCount = 0; | |
2848 | pSMB->DataCount = 0; | |
2849 | pSMB->DataOffset = 0; | |
2850 | pSMB->MaxParameterCount = 0; | |
2851 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
2852 | pSMB->MaxSetupCount = 0; | |
2853 | pSMB->Reserved = 0; | |
2854 | pSMB->Flags = 0; | |
2855 | pSMB->Timeout = 0; | |
2856 | pSMB->Reserved2 = 0; | |
2857 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2858 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); | |
2859 | pSMB->SetupCount = 1; | |
2860 | pSMB->Reserved3 = 0; | |
2861 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
2862 | byte_count = params + 3 /* pad */ ; | |
2863 | pSMB->ParameterCount = cpu_to_le16(params); | |
2864 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2865 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
2866 | pSMB->hdr.smb_buf_length += byte_count; | |
2867 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2868 | ||
2869 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
2870 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2871 | if (rc) { | |
2872 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
2873 | } else { /* decode response */ | |
2874 | /* BB Add logic to parse referrals here */ | |
2875 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2876 | ||
2877 | if (rc || (pSMBr->ByteCount < 17)) /* BB also check enough total bytes returned */ | |
2878 | rc = -EIO; /* bad smb */ | |
2879 | else { | |
2880 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2881 | __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
2882 | ||
2883 | cFYI(1, | |
2884 | ("Decoding GetDFSRefer response. BCC: %d Offset %d", | |
2885 | pSMBr->ByteCount, data_offset)); | |
2886 | referrals = | |
2887 | (struct dfs_referral_level_3 *) | |
2888 | (8 /* sizeof start of data block */ + | |
2889 | data_offset + | |
2890 | (char *) &pSMBr->hdr.Protocol); | |
2891 | cFYI(1,("num_referrals: %d dfs flags: 0x%x ... \nfor referral one refer size: 0x%x srv type: 0x%x refer flags: 0x%x ttl: 0x%x", | |
2892 | le16_to_cpu(pSMBr->NumberOfReferrals),le16_to_cpu(pSMBr->DFSFlags), le16_to_cpu(referrals->ReferralSize),le16_to_cpu(referrals->ServerType),le16_to_cpu(referrals->ReferralFlags),le16_to_cpu(referrals->TimeToLive))); | |
2893 | /* BB This field is actually two bytes in from start of | |
2894 | data block so we could do safety check that DataBlock | |
2895 | begins at address of pSMBr->NumberOfReferrals */ | |
2896 | *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals); | |
2897 | ||
2898 | /* BB Fix below so can return more than one referral */ | |
2899 | if(*number_of_UNC_in_array > 1) | |
2900 | *number_of_UNC_in_array = 1; | |
2901 | ||
2902 | /* get the length of the strings describing refs */ | |
2903 | name_len = 0; | |
2904 | for(i=0;i<*number_of_UNC_in_array;i++) { | |
2905 | /* make sure that DfsPathOffset not past end */ | |
2906 | __u16 offset = le16_to_cpu(referrals->DfsPathOffset); | |
2907 | if (offset > data_count) { | |
2908 | /* if invalid referral, stop here and do | |
2909 | not try to copy any more */ | |
2910 | *number_of_UNC_in_array = i; | |
2911 | break; | |
2912 | } | |
2913 | temp = ((char *)referrals) + offset; | |
2914 | ||
2915 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2916 | name_len += UniStrnlen((wchar_t *)temp,data_count); | |
2917 | } else { | |
2918 | name_len += strnlen(temp,data_count); | |
2919 | } | |
2920 | referrals++; | |
2921 | /* BB add check that referral pointer does not fall off end PDU */ | |
2922 | ||
2923 | } | |
2924 | /* BB add check for name_len bigger than bcc */ | |
2925 | *targetUNCs = | |
2926 | kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL); | |
2927 | if(*targetUNCs == NULL) { | |
2928 | rc = -ENOMEM; | |
2929 | goto GetDFSRefExit; | |
2930 | } | |
2931 | /* copy the ref strings */ | |
2932 | referrals = | |
2933 | (struct dfs_referral_level_3 *) | |
2934 | (8 /* sizeof data hdr */ + | |
2935 | data_offset + | |
2936 | (char *) &pSMBr->hdr.Protocol); | |
2937 | ||
2938 | for(i=0;i<*number_of_UNC_in_array;i++) { | |
2939 | temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset); | |
2940 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2941 | cifs_strfromUCS_le(*targetUNCs, | |
2942 | (wchar_t *) temp, name_len, nls_codepage); | |
2943 | } else { | |
2944 | strncpy(*targetUNCs,temp,name_len); | |
2945 | } | |
2946 | /* BB update target_uncs pointers */ | |
2947 | referrals++; | |
2948 | } | |
2949 | temp = *targetUNCs; | |
2950 | temp[name_len] = 0; | |
2951 | } | |
2952 | ||
2953 | } | |
2954 | GetDFSRefExit: | |
2955 | if (pSMB) | |
2956 | cifs_buf_release(pSMB); | |
2957 | ||
2958 | if (rc == -EAGAIN) | |
2959 | goto getDFSRetry; | |
2960 | ||
2961 | return rc; | |
2962 | } | |
2963 | ||
2964 | int | |
737b758c | 2965 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
2966 | { |
2967 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
2968 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
2969 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
2970 | FILE_SYSTEM_INFO *response_data; | |
2971 | int rc = 0; | |
2972 | int bytes_returned = 0; | |
2973 | __u16 params, byte_count; | |
2974 | ||
2975 | cFYI(1, ("In QFSInfo")); | |
2976 | QFSInfoRetry: | |
2977 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2978 | (void **) &pSMBr); | |
2979 | if (rc) | |
2980 | return rc; | |
2981 | ||
2982 | params = 2; /* level */ | |
2983 | pSMB->TotalDataCount = 0; | |
2984 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2985 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
2986 | pSMB->MaxSetupCount = 0; | |
2987 | pSMB->Reserved = 0; | |
2988 | pSMB->Flags = 0; | |
2989 | pSMB->Timeout = 0; | |
2990 | pSMB->Reserved2 = 0; | |
2991 | byte_count = params + 1 /* pad */ ; | |
2992 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2993 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2994 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2995 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
2996 | pSMB->DataCount = 0; | |
2997 | pSMB->DataOffset = 0; | |
2998 | pSMB->SetupCount = 1; | |
2999 | pSMB->Reserved3 = 0; | |
3000 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3001 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
3002 | pSMB->hdr.smb_buf_length += byte_count; | |
3003 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3004 | ||
3005 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3006 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3007 | if (rc) { | |
3008 | cERROR(1, ("Send error in QFSInfo = %d", rc)); | |
3009 | } else { /* decode response */ | |
3010 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3011 | ||
3012 | if (rc || (pSMBr->ByteCount < 24)) /* BB alsO CHEck enough total bytes returned */ | |
3013 | rc = -EIO; /* bad smb */ | |
3014 | else { | |
3015 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3016 | cFYI(1, | |
3017 | ("Decoding qfsinfo response. BCC: %d Offset %d", | |
3018 | pSMBr->ByteCount, data_offset)); | |
3019 | ||
3020 | response_data = | |
3021 | (FILE_SYSTEM_INFO | |
3022 | *) (((char *) &pSMBr->hdr.Protocol) + | |
3023 | data_offset); | |
3024 | FSData->f_bsize = | |
3025 | le32_to_cpu(response_data->BytesPerSector) * | |
3026 | le32_to_cpu(response_data-> | |
3027 | SectorsPerAllocationUnit); | |
3028 | FSData->f_blocks = | |
3029 | le64_to_cpu(response_data->TotalAllocationUnits); | |
3030 | FSData->f_bfree = FSData->f_bavail = | |
3031 | le64_to_cpu(response_data->FreeAllocationUnits); | |
3032 | cFYI(1, | |
3033 | ("Blocks: %lld Free: %lld Block size %ld", | |
3034 | (unsigned long long)FSData->f_blocks, | |
3035 | (unsigned long long)FSData->f_bfree, | |
3036 | FSData->f_bsize)); | |
3037 | } | |
3038 | } | |
3039 | cifs_buf_release(pSMB); | |
3040 | ||
3041 | if (rc == -EAGAIN) | |
3042 | goto QFSInfoRetry; | |
3043 | ||
3044 | return rc; | |
3045 | } | |
3046 | ||
3047 | int | |
737b758c | 3048 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
3049 | { |
3050 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
3051 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3052 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3053 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
3054 | int rc = 0; | |
3055 | int bytes_returned = 0; | |
3056 | __u16 params, byte_count; | |
3057 | ||
3058 | cFYI(1, ("In QFSAttributeInfo")); | |
3059 | QFSAttributeRetry: | |
3060 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3061 | (void **) &pSMBr); | |
3062 | if (rc) | |
3063 | return rc; | |
3064 | ||
3065 | params = 2; /* level */ | |
3066 | pSMB->TotalDataCount = 0; | |
3067 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3068 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
3069 | pSMB->MaxSetupCount = 0; | |
3070 | pSMB->Reserved = 0; | |
3071 | pSMB->Flags = 0; | |
3072 | pSMB->Timeout = 0; | |
3073 | pSMB->Reserved2 = 0; | |
3074 | byte_count = params + 1 /* pad */ ; | |
3075 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3076 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3077 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3078 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3079 | pSMB->DataCount = 0; | |
3080 | pSMB->DataOffset = 0; | |
3081 | pSMB->SetupCount = 1; | |
3082 | pSMB->Reserved3 = 0; | |
3083 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3084 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
3085 | pSMB->hdr.smb_buf_length += byte_count; | |
3086 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3087 | ||
3088 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3089 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3090 | if (rc) { | |
3091 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
3092 | } else { /* decode response */ | |
3093 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3094 | ||
3095 | if (rc || (pSMBr->ByteCount < 13)) { /* BB also check enough bytes returned */ | |
3096 | rc = -EIO; /* bad smb */ | |
3097 | } else { | |
3098 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3099 | response_data = | |
3100 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
3101 | *) (((char *) &pSMBr->hdr.Protocol) + | |
3102 | data_offset); | |
3103 | memcpy(&tcon->fsAttrInfo, response_data, | |
3104 | sizeof (FILE_SYSTEM_ATTRIBUTE_INFO)); | |
3105 | } | |
3106 | } | |
3107 | cifs_buf_release(pSMB); | |
3108 | ||
3109 | if (rc == -EAGAIN) | |
3110 | goto QFSAttributeRetry; | |
3111 | ||
3112 | return rc; | |
3113 | } | |
3114 | ||
3115 | int | |
737b758c | 3116 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
3117 | { |
3118 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
3119 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3120 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3121 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
3122 | int rc = 0; | |
3123 | int bytes_returned = 0; | |
3124 | __u16 params, byte_count; | |
3125 | ||
3126 | cFYI(1, ("In QFSDeviceInfo")); | |
3127 | QFSDeviceRetry: | |
3128 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3129 | (void **) &pSMBr); | |
3130 | if (rc) | |
3131 | return rc; | |
3132 | ||
3133 | params = 2; /* level */ | |
3134 | pSMB->TotalDataCount = 0; | |
3135 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3136 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
3137 | pSMB->MaxSetupCount = 0; | |
3138 | pSMB->Reserved = 0; | |
3139 | pSMB->Flags = 0; | |
3140 | pSMB->Timeout = 0; | |
3141 | pSMB->Reserved2 = 0; | |
3142 | byte_count = params + 1 /* pad */ ; | |
3143 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3144 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3145 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3146 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3147 | ||
3148 | pSMB->DataCount = 0; | |
3149 | pSMB->DataOffset = 0; | |
3150 | pSMB->SetupCount = 1; | |
3151 | pSMB->Reserved3 = 0; | |
3152 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3153 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
3154 | pSMB->hdr.smb_buf_length += byte_count; | |
3155 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3156 | ||
3157 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3158 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3159 | if (rc) { | |
3160 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
3161 | } else { /* decode response */ | |
3162 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3163 | ||
3164 | if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO))) | |
3165 | rc = -EIO; /* bad smb */ | |
3166 | else { | |
3167 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3168 | response_data = | |
737b758c SF |
3169 | (FILE_SYSTEM_DEVICE_INFO *) |
3170 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
3171 | data_offset); |
3172 | memcpy(&tcon->fsDevInfo, response_data, | |
3173 | sizeof (FILE_SYSTEM_DEVICE_INFO)); | |
3174 | } | |
3175 | } | |
3176 | cifs_buf_release(pSMB); | |
3177 | ||
3178 | if (rc == -EAGAIN) | |
3179 | goto QFSDeviceRetry; | |
3180 | ||
3181 | return rc; | |
3182 | } | |
3183 | ||
3184 | int | |
737b758c | 3185 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
3186 | { |
3187 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
3188 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3189 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3190 | FILE_SYSTEM_UNIX_INFO *response_data; | |
3191 | int rc = 0; | |
3192 | int bytes_returned = 0; | |
3193 | __u16 params, byte_count; | |
3194 | ||
3195 | cFYI(1, ("In QFSUnixInfo")); | |
3196 | QFSUnixRetry: | |
3197 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3198 | (void **) &pSMBr); | |
3199 | if (rc) | |
3200 | return rc; | |
3201 | ||
3202 | params = 2; /* level */ | |
3203 | pSMB->TotalDataCount = 0; | |
3204 | pSMB->DataCount = 0; | |
3205 | pSMB->DataOffset = 0; | |
3206 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3207 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
3208 | pSMB->MaxSetupCount = 0; | |
3209 | pSMB->Reserved = 0; | |
3210 | pSMB->Flags = 0; | |
3211 | pSMB->Timeout = 0; | |
3212 | pSMB->Reserved2 = 0; | |
3213 | byte_count = params + 1 /* pad */ ; | |
3214 | pSMB->ParameterCount = cpu_to_le16(params); | |
3215 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3216 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct | |
3217 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3218 | pSMB->SetupCount = 1; | |
3219 | pSMB->Reserved3 = 0; | |
3220 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3221 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
3222 | pSMB->hdr.smb_buf_length += byte_count; | |
3223 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3224 | ||
3225 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3226 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3227 | if (rc) { | |
3228 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
3229 | } else { /* decode response */ | |
3230 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3231 | ||
3232 | if (rc || (pSMBr->ByteCount < 13)) { | |
3233 | rc = -EIO; /* bad smb */ | |
3234 | } else { | |
3235 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3236 | response_data = | |
3237 | (FILE_SYSTEM_UNIX_INFO | |
3238 | *) (((char *) &pSMBr->hdr.Protocol) + | |
3239 | data_offset); | |
3240 | memcpy(&tcon->fsUnixInfo, response_data, | |
3241 | sizeof (FILE_SYSTEM_UNIX_INFO)); | |
3242 | } | |
3243 | } | |
3244 | cifs_buf_release(pSMB); | |
3245 | ||
3246 | if (rc == -EAGAIN) | |
3247 | goto QFSUnixRetry; | |
3248 | ||
3249 | ||
3250 | return rc; | |
3251 | } | |
3252 | ||
3253 | ||
3254 | int | |
3255 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 3256 | struct kstatfs *FSData) |
1da177e4 LT |
3257 | { |
3258 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
3259 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3260 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3261 | FILE_SYSTEM_POSIX_INFO *response_data; | |
3262 | int rc = 0; | |
3263 | int bytes_returned = 0; | |
3264 | __u16 params, byte_count; | |
3265 | ||
3266 | cFYI(1, ("In QFSPosixInfo")); | |
3267 | QFSPosixRetry: | |
3268 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3269 | (void **) &pSMBr); | |
3270 | if (rc) | |
3271 | return rc; | |
3272 | ||
3273 | params = 2; /* level */ | |
3274 | pSMB->TotalDataCount = 0; | |
3275 | pSMB->DataCount = 0; | |
3276 | pSMB->DataOffset = 0; | |
3277 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3278 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
3279 | pSMB->MaxSetupCount = 0; | |
3280 | pSMB->Reserved = 0; | |
3281 | pSMB->Flags = 0; | |
3282 | pSMB->Timeout = 0; | |
3283 | pSMB->Reserved2 = 0; | |
3284 | byte_count = params + 1 /* pad */ ; | |
3285 | pSMB->ParameterCount = cpu_to_le16(params); | |
3286 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3287 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct | |
3288 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3289 | pSMB->SetupCount = 1; | |
3290 | pSMB->Reserved3 = 0; | |
3291 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3292 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
3293 | pSMB->hdr.smb_buf_length += byte_count; | |
3294 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3295 | ||
3296 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3297 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3298 | if (rc) { | |
3299 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
3300 | } else { /* decode response */ | |
3301 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3302 | ||
3303 | if (rc || (pSMBr->ByteCount < 13)) { | |
3304 | rc = -EIO; /* bad smb */ | |
3305 | } else { | |
3306 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3307 | response_data = | |
3308 | (FILE_SYSTEM_POSIX_INFO | |
3309 | *) (((char *) &pSMBr->hdr.Protocol) + | |
3310 | data_offset); | |
3311 | FSData->f_bsize = | |
3312 | le32_to_cpu(response_data->BlockSize); | |
3313 | FSData->f_blocks = | |
3314 | le64_to_cpu(response_data->TotalBlocks); | |
3315 | FSData->f_bfree = | |
3316 | le64_to_cpu(response_data->BlocksAvail); | |
3317 | if(response_data->UserBlocksAvail == -1) { | |
3318 | FSData->f_bavail = FSData->f_bfree; | |
3319 | } else { | |
3320 | FSData->f_bavail = | |
3321 | le64_to_cpu(response_data->UserBlocksAvail); | |
3322 | } | |
3323 | if(response_data->TotalFileNodes != -1) | |
3324 | FSData->f_files = | |
3325 | le64_to_cpu(response_data->TotalFileNodes); | |
3326 | if(response_data->FreeFileNodes != -1) | |
3327 | FSData->f_ffree = | |
3328 | le64_to_cpu(response_data->FreeFileNodes); | |
3329 | } | |
3330 | } | |
3331 | cifs_buf_release(pSMB); | |
3332 | ||
3333 | if (rc == -EAGAIN) | |
3334 | goto QFSPosixRetry; | |
3335 | ||
3336 | return rc; | |
3337 | } | |
3338 | ||
3339 | ||
3340 | /* We can not use write of zero bytes trick to | |
3341 | set file size due to need for large file support. Also note that | |
3342 | this SetPathInfo is preferred to SetFileInfo based method in next | |
3343 | routine which is only needed to work around a sharing violation bug | |
3344 | in Samba which this routine can run into */ | |
3345 | ||
3346 | int | |
3347 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
737b758c SF |
3348 | __u64 size, int SetAllocation, |
3349 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3350 | { |
3351 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3352 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3353 | struct file_end_of_file_info *parm_data; | |
3354 | int name_len; | |
3355 | int rc = 0; | |
3356 | int bytes_returned = 0; | |
3357 | __u16 params, byte_count, data_count, param_offset, offset; | |
3358 | ||
3359 | cFYI(1, ("In SetEOF")); | |
3360 | SetEOFRetry: | |
3361 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3362 | (void **) &pSMBr); | |
3363 | if (rc) | |
3364 | return rc; | |
3365 | ||
3366 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3367 | name_len = | |
737b758c SF |
3368 | cifsConvertToUCS((__u16 *) pSMB->FileName, fileName, |
3369 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3370 | name_len++; /* trailing null */ |
3371 | name_len *= 2; | |
3372 | } else { /* BB improve the check for buffer overruns BB */ | |
3373 | name_len = strnlen(fileName, PATH_MAX); | |
3374 | name_len++; /* trailing null */ | |
3375 | strncpy(pSMB->FileName, fileName, name_len); | |
3376 | } | |
3377 | params = 6 + name_len; | |
3378 | data_count = sizeof (struct file_end_of_file_info); | |
3379 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3380 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
3381 | pSMB->MaxSetupCount = 0; | |
3382 | pSMB->Reserved = 0; | |
3383 | pSMB->Flags = 0; | |
3384 | pSMB->Timeout = 0; | |
3385 | pSMB->Reserved2 = 0; | |
3386 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
3387 | InformationLevel) - 4; | |
3388 | offset = param_offset + params; | |
3389 | if(SetAllocation) { | |
3390 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
3391 | pSMB->InformationLevel = | |
3392 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
3393 | else | |
3394 | pSMB->InformationLevel = | |
3395 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
3396 | } else /* Set File Size */ { | |
3397 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
3398 | pSMB->InformationLevel = | |
3399 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); | |
3400 | else | |
3401 | pSMB->InformationLevel = | |
3402 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); | |
3403 | } | |
3404 | ||
3405 | parm_data = | |
3406 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
3407 | offset); | |
3408 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3409 | pSMB->DataOffset = cpu_to_le16(offset); | |
3410 | pSMB->SetupCount = 1; | |
3411 | pSMB->Reserved3 = 0; | |
3412 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3413 | byte_count = 3 /* pad */ + params + data_count; | |
3414 | pSMB->DataCount = cpu_to_le16(data_count); | |
3415 | pSMB->TotalDataCount = pSMB->DataCount; | |
3416 | pSMB->ParameterCount = cpu_to_le16(params); | |
3417 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3418 | pSMB->Reserved4 = 0; | |
3419 | pSMB->hdr.smb_buf_length += byte_count; | |
3420 | parm_data->FileSize = cpu_to_le64(size); | |
3421 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3422 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3423 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3424 | if (rc) { | |
3425 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); | |
3426 | } | |
3427 | ||
3428 | cifs_buf_release(pSMB); | |
3429 | ||
3430 | if (rc == -EAGAIN) | |
3431 | goto SetEOFRetry; | |
3432 | ||
3433 | return rc; | |
3434 | } | |
3435 | ||
3436 | int | |
3437 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, | |
3438 | __u16 fid, __u32 pid_of_opener, int SetAllocation) | |
3439 | { | |
3440 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
3441 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
3442 | char *data_offset; | |
3443 | struct file_end_of_file_info *parm_data; | |
3444 | int rc = 0; | |
3445 | int bytes_returned = 0; | |
3446 | __u16 params, param_offset, offset, byte_count, count; | |
3447 | ||
3448 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
3449 | (long long)size)); | |
cd63499c SF |
3450 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
3451 | ||
1da177e4 LT |
3452 | if (rc) |
3453 | return rc; | |
3454 | ||
cd63499c SF |
3455 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
3456 | ||
1da177e4 LT |
3457 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
3458 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
3459 | ||
3460 | params = 6; | |
3461 | pSMB->MaxSetupCount = 0; | |
3462 | pSMB->Reserved = 0; | |
3463 | pSMB->Flags = 0; | |
3464 | pSMB->Timeout = 0; | |
3465 | pSMB->Reserved2 = 0; | |
3466 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
3467 | offset = param_offset + params; | |
3468 | ||
3469 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
3470 | ||
3471 | count = sizeof(struct file_end_of_file_info); | |
3472 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3473 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
3474 | pSMB->SetupCount = 1; | |
3475 | pSMB->Reserved3 = 0; | |
3476 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
3477 | byte_count = 3 /* pad */ + params + count; | |
3478 | pSMB->DataCount = cpu_to_le16(count); | |
3479 | pSMB->ParameterCount = cpu_to_le16(params); | |
3480 | pSMB->TotalDataCount = pSMB->DataCount; | |
3481 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3482 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3483 | parm_data = | |
3484 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
3485 | offset); | |
3486 | pSMB->DataOffset = cpu_to_le16(offset); | |
3487 | parm_data->FileSize = cpu_to_le64(size); | |
3488 | pSMB->Fid = fid; | |
3489 | if(SetAllocation) { | |
3490 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
3491 | pSMB->InformationLevel = | |
3492 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
3493 | else | |
3494 | pSMB->InformationLevel = | |
3495 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
3496 | } else /* Set File Size */ { | |
3497 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
3498 | pSMB->InformationLevel = | |
3499 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); | |
3500 | else | |
3501 | pSMB->InformationLevel = | |
3502 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); | |
3503 | } | |
3504 | pSMB->Reserved4 = 0; | |
3505 | pSMB->hdr.smb_buf_length += byte_count; | |
3506 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3507 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3508 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3509 | if (rc) { | |
3510 | cFYI(1, | |
3511 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
3512 | rc)); | |
3513 | } | |
3514 | ||
3515 | if (pSMB) | |
cd63499c | 3516 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
3517 | |
3518 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3519 | since file handle passed in no longer valid */ | |
3520 | ||
3521 | return rc; | |
3522 | } | |
3523 | ||
3524 | /* Some legacy servers such as NT4 require that the file times be set on | |
3525 | an open handle, rather than by pathname - this is awkward due to | |
3526 | potential access conflicts on the open, but it is unavoidable for these | |
3527 | old servers since the only other choice is to go from 100 nanosecond DCE | |
3528 | time and resort to the original setpathinfo level which takes the ancient | |
3529 | DOS time format with 2 second granularity */ | |
3530 | int | |
3531 | CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data, | |
3532 | __u16 fid) | |
3533 | { | |
3534 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
3535 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
3536 | char *data_offset; | |
3537 | int rc = 0; | |
3538 | int bytes_returned = 0; | |
3539 | __u16 params, param_offset, offset, byte_count, count; | |
3540 | ||
3541 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
cd63499c SF |
3542 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
3543 | ||
1da177e4 LT |
3544 | if (rc) |
3545 | return rc; | |
3546 | ||
cd63499c SF |
3547 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
3548 | ||
1da177e4 LT |
3549 | /* At this point there is no need to override the current pid |
3550 | with the pid of the opener, but that could change if we someday | |
3551 | use an existing handle (rather than opening one on the fly) */ | |
3552 | /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
3553 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/ | |
3554 | ||
3555 | params = 6; | |
3556 | pSMB->MaxSetupCount = 0; | |
3557 | pSMB->Reserved = 0; | |
3558 | pSMB->Flags = 0; | |
3559 | pSMB->Timeout = 0; | |
3560 | pSMB->Reserved2 = 0; | |
3561 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
3562 | offset = param_offset + params; | |
3563 | ||
3564 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
3565 | ||
3566 | count = sizeof (FILE_BASIC_INFO); | |
3567 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3568 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
3569 | pSMB->SetupCount = 1; | |
3570 | pSMB->Reserved3 = 0; | |
3571 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
3572 | byte_count = 3 /* pad */ + params + count; | |
3573 | pSMB->DataCount = cpu_to_le16(count); | |
3574 | pSMB->ParameterCount = cpu_to_le16(params); | |
3575 | pSMB->TotalDataCount = pSMB->DataCount; | |
3576 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3577 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3578 | pSMB->DataOffset = cpu_to_le16(offset); | |
3579 | pSMB->Fid = fid; | |
3580 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
3581 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
3582 | else | |
3583 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
3584 | pSMB->Reserved4 = 0; | |
3585 | pSMB->hdr.smb_buf_length += byte_count; | |
3586 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3587 | memcpy(data_offset,data,sizeof(FILE_BASIC_INFO)); | |
3588 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3589 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3590 | if (rc) { | |
3591 | cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc)); | |
3592 | } | |
3593 | ||
cd63499c | 3594 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
3595 | |
3596 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3597 | since file handle passed in no longer valid */ | |
3598 | ||
3599 | return rc; | |
3600 | } | |
3601 | ||
3602 | ||
3603 | int | |
3604 | CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
3605 | const FILE_BASIC_INFO * data, | |
737b758c | 3606 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3607 | { |
3608 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
3609 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
3610 | int name_len; | |
3611 | int rc = 0; | |
3612 | int bytes_returned = 0; | |
3613 | char *data_offset; | |
3614 | __u16 params, param_offset, offset, byte_count, count; | |
3615 | ||
3616 | cFYI(1, ("In SetTimes")); | |
3617 | ||
3618 | SetTimesRetry: | |
3619 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3620 | (void **) &pSMBr); | |
3621 | if (rc) | |
3622 | return rc; | |
3623 | ||
3624 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3625 | name_len = | |
737b758c SF |
3626 | cifsConvertToUCS((__u16 *) pSMB->FileName, fileName, |
3627 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3628 | name_len++; /* trailing null */ |
3629 | name_len *= 2; | |
3630 | } else { /* BB improve the check for buffer overruns BB */ | |
3631 | name_len = strnlen(fileName, PATH_MAX); | |
3632 | name_len++; /* trailing null */ | |
3633 | strncpy(pSMB->FileName, fileName, name_len); | |
3634 | } | |
3635 | ||
3636 | params = 6 + name_len; | |
3637 | count = sizeof (FILE_BASIC_INFO); | |
3638 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3639 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
3640 | pSMB->MaxSetupCount = 0; | |
3641 | pSMB->Reserved = 0; | |
3642 | pSMB->Flags = 0; | |
3643 | pSMB->Timeout = 0; | |
3644 | pSMB->Reserved2 = 0; | |
3645 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
3646 | InformationLevel) - 4; | |
3647 | offset = param_offset + params; | |
3648 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
3649 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3650 | pSMB->DataOffset = cpu_to_le16(offset); | |
3651 | pSMB->SetupCount = 1; | |
3652 | pSMB->Reserved3 = 0; | |
3653 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3654 | byte_count = 3 /* pad */ + params + count; | |
3655 | ||
3656 | pSMB->DataCount = cpu_to_le16(count); | |
3657 | pSMB->ParameterCount = cpu_to_le16(params); | |
3658 | pSMB->TotalDataCount = pSMB->DataCount; | |
3659 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3660 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
3661 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
3662 | else | |
3663 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
3664 | pSMB->Reserved4 = 0; | |
3665 | pSMB->hdr.smb_buf_length += byte_count; | |
3666 | memcpy(data_offset, data, sizeof (FILE_BASIC_INFO)); | |
3667 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3668 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3669 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3670 | if (rc) { | |
3671 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); | |
3672 | } | |
3673 | ||
3674 | cifs_buf_release(pSMB); | |
3675 | ||
3676 | if (rc == -EAGAIN) | |
3677 | goto SetTimesRetry; | |
3678 | ||
3679 | return rc; | |
3680 | } | |
3681 | ||
3682 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
3683 | /* Can be used to set attributes */ | |
3684 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
3685 | handling it anyway and NT4 was what we thought it would be needed for | |
3686 | Do not delete it until we prove whether needed for Win9x though */ | |
3687 | int | |
3688 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
3689 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
3690 | { | |
3691 | SETATTR_REQ *pSMB = NULL; | |
3692 | SETATTR_RSP *pSMBr = NULL; | |
3693 | int rc = 0; | |
3694 | int bytes_returned; | |
3695 | int name_len; | |
3696 | ||
3697 | cFYI(1, ("In SetAttrLegacy")); | |
3698 | ||
3699 | SetAttrLgcyRetry: | |
3700 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
3701 | (void **) &pSMBr); | |
3702 | if (rc) | |
3703 | return rc; | |
3704 | ||
3705 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3706 | name_len = | |
737b758c | 3707 | ConvertToUCS((wchar_t *) pSMB->fileName, fileName, |
1da177e4 LT |
3708 | PATH_MAX, nls_codepage); |
3709 | name_len++; /* trailing null */ | |
3710 | name_len *= 2; | |
3711 | } else { /* BB improve the check for buffer overruns BB */ | |
3712 | name_len = strnlen(fileName, PATH_MAX); | |
3713 | name_len++; /* trailing null */ | |
3714 | strncpy(pSMB->fileName, fileName, name_len); | |
3715 | } | |
3716 | pSMB->attr = cpu_to_le16(dos_attrs); | |
3717 | pSMB->BufferFormat = 0x04; | |
3718 | pSMB->hdr.smb_buf_length += name_len + 1; | |
3719 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
3720 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3721 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3722 | if (rc) { | |
3723 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); | |
3724 | } | |
3725 | ||
3726 | cifs_buf_release(pSMB); | |
3727 | ||
3728 | if (rc == -EAGAIN) | |
3729 | goto SetAttrLgcyRetry; | |
3730 | ||
3731 | return rc; | |
3732 | } | |
3733 | #endif /* temporarily unneeded SetAttr legacy function */ | |
3734 | ||
3735 | int | |
3736 | CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon, | |
737b758c SF |
3737 | char *fileName, __u64 mode, __u64 uid, __u64 gid, |
3738 | dev_t device, const struct nls_table *nls_codepage, | |
3739 | int remap) | |
1da177e4 LT |
3740 | { |
3741 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
3742 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
3743 | int name_len; | |
3744 | int rc = 0; | |
3745 | int bytes_returned = 0; | |
3746 | FILE_UNIX_BASIC_INFO *data_offset; | |
3747 | __u16 params, param_offset, offset, count, byte_count; | |
3748 | ||
3749 | cFYI(1, ("In SetUID/GID/Mode")); | |
3750 | setPermsRetry: | |
3751 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3752 | (void **) &pSMBr); | |
3753 | if (rc) | |
3754 | return rc; | |
3755 | ||
3756 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3757 | name_len = | |
737b758c SF |
3758 | cifsConvertToUCS((__u16 *) pSMB->FileName, fileName, |
3759 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3760 | name_len++; /* trailing null */ |
3761 | name_len *= 2; | |
3762 | } else { /* BB improve the check for buffer overruns BB */ | |
3763 | name_len = strnlen(fileName, PATH_MAX); | |
3764 | name_len++; /* trailing null */ | |
3765 | strncpy(pSMB->FileName, fileName, name_len); | |
3766 | } | |
3767 | ||
3768 | params = 6 + name_len; | |
3769 | count = sizeof (FILE_UNIX_BASIC_INFO); | |
3770 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3771 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
3772 | pSMB->MaxSetupCount = 0; | |
3773 | pSMB->Reserved = 0; | |
3774 | pSMB->Flags = 0; | |
3775 | pSMB->Timeout = 0; | |
3776 | pSMB->Reserved2 = 0; | |
3777 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
3778 | InformationLevel) - 4; | |
3779 | offset = param_offset + params; | |
3780 | data_offset = | |
3781 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
3782 | offset); | |
3783 | memset(data_offset, 0, count); | |
3784 | pSMB->DataOffset = cpu_to_le16(offset); | |
3785 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3786 | pSMB->SetupCount = 1; | |
3787 | pSMB->Reserved3 = 0; | |
3788 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3789 | byte_count = 3 /* pad */ + params + count; | |
3790 | pSMB->ParameterCount = cpu_to_le16(params); | |
3791 | pSMB->DataCount = cpu_to_le16(count); | |
3792 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3793 | pSMB->TotalDataCount = pSMB->DataCount; | |
3794 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
3795 | pSMB->Reserved4 = 0; | |
3796 | pSMB->hdr.smb_buf_length += byte_count; | |
3797 | data_offset->Uid = cpu_to_le64(uid); | |
3798 | data_offset->Gid = cpu_to_le64(gid); | |
3799 | /* better to leave device as zero when it is */ | |
3800 | data_offset->DevMajor = cpu_to_le64(MAJOR(device)); | |
3801 | data_offset->DevMinor = cpu_to_le64(MINOR(device)); | |
3802 | data_offset->Permissions = cpu_to_le64(mode); | |
3803 | ||
3804 | if(S_ISREG(mode)) | |
3805 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
3806 | else if(S_ISDIR(mode)) | |
3807 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
3808 | else if(S_ISLNK(mode)) | |
3809 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
3810 | else if(S_ISCHR(mode)) | |
3811 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
3812 | else if(S_ISBLK(mode)) | |
3813 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
3814 | else if(S_ISFIFO(mode)) | |
3815 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
3816 | else if(S_ISSOCK(mode)) | |
3817 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
3818 | ||
3819 | ||
3820 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3821 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3822 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3823 | if (rc) { | |
3824 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); | |
3825 | } | |
3826 | ||
3827 | if (pSMB) | |
3828 | cifs_buf_release(pSMB); | |
3829 | if (rc == -EAGAIN) | |
3830 | goto setPermsRetry; | |
3831 | return rc; | |
3832 | } | |
3833 | ||
3834 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, | |
3835 | const int notify_subdirs, const __u16 netfid, | |
3836 | __u32 filter, const struct nls_table *nls_codepage) | |
3837 | { | |
3838 | int rc = 0; | |
3839 | struct smb_com_transaction_change_notify_req * pSMB = NULL; | |
3840 | struct smb_com_transaction_change_notify_rsp * pSMBr = NULL; | |
3841 | int bytes_returned; | |
3842 | ||
3843 | cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid)); | |
3844 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3845 | (void **) &pSMBr); | |
3846 | if (rc) | |
3847 | return rc; | |
3848 | ||
3849 | pSMB->TotalParameterCount = 0 ; | |
3850 | pSMB->TotalDataCount = 0; | |
3851 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3852 | /* BB find exact data count max from sess structure BB */ | |
3853 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
3854 | pSMB->MaxSetupCount = 4; | |
3855 | pSMB->Reserved = 0; | |
3856 | pSMB->ParameterOffset = 0; | |
3857 | pSMB->DataCount = 0; | |
3858 | pSMB->DataOffset = 0; | |
3859 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
3860 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
3861 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3862 | if(notify_subdirs) | |
3863 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
3864 | pSMB->Reserved2 = 0; | |
3865 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
3866 | pSMB->Fid = netfid; /* file handle always le */ | |
3867 | pSMB->ByteCount = 0; | |
3868 | ||
3869 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3870 | (struct smb_hdr *) pSMBr, &bytes_returned, -1); | |
3871 | if (rc) { | |
3872 | cFYI(1, ("Error in Notify = %d", rc)); | |
3873 | } | |
3874 | cifs_buf_release(pSMB); | |
3875 | return rc; | |
3876 | } | |
3877 | #ifdef CONFIG_CIFS_XATTR | |
3878 | ssize_t | |
3879 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
3880 | const unsigned char *searchName, | |
3881 | char * EAData, size_t buf_size, | |
737b758c | 3882 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3883 | { |
3884 | /* BB assumes one setup word */ | |
3885 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3886 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3887 | int rc = 0; | |
3888 | int bytes_returned; | |
3889 | int name_len; | |
3890 | struct fea * temp_fea; | |
3891 | char * temp_ptr; | |
3892 | __u16 params, byte_count; | |
3893 | ||
3894 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
3895 | QAllEAsRetry: | |
3896 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3897 | (void **) &pSMBr); | |
3898 | if (rc) | |
3899 | return rc; | |
3900 | ||
3901 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3902 | name_len = | |
737b758c SF |
3903 | cifsConvertToUCS((wchar_t *) pSMB->FileName, searchName, |
3904 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3905 | name_len++; /* trailing null */ |
3906 | name_len *= 2; | |
3907 | } else { /* BB improve the check for buffer overruns BB */ | |
3908 | name_len = strnlen(searchName, PATH_MAX); | |
3909 | name_len++; /* trailing null */ | |
3910 | strncpy(pSMB->FileName, searchName, name_len); | |
3911 | } | |
3912 | ||
3913 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
3914 | pSMB->TotalDataCount = 0; | |
3915 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3916 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
3917 | pSMB->MaxSetupCount = 0; | |
3918 | pSMB->Reserved = 0; | |
3919 | pSMB->Flags = 0; | |
3920 | pSMB->Timeout = 0; | |
3921 | pSMB->Reserved2 = 0; | |
3922 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3923 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
3924 | pSMB->DataCount = 0; | |
3925 | pSMB->DataOffset = 0; | |
3926 | pSMB->SetupCount = 1; | |
3927 | pSMB->Reserved3 = 0; | |
3928 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3929 | byte_count = params + 1 /* pad */ ; | |
3930 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3931 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3932 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
3933 | pSMB->Reserved4 = 0; | |
3934 | pSMB->hdr.smb_buf_length += byte_count; | |
3935 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3936 | ||
3937 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3938 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3939 | if (rc) { | |
3940 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
3941 | } else { /* decode response */ | |
3942 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3943 | ||
3944 | /* BB also check enough total bytes returned */ | |
3945 | /* BB we need to improve the validity checking | |
3946 | of these trans2 responses */ | |
3947 | if (rc || (pSMBr->ByteCount < 4)) | |
3948 | rc = -EIO; /* bad smb */ | |
3949 | /* else if (pFindData){ | |
3950 | memcpy((char *) pFindData, | |
3951 | (char *) &pSMBr->hdr.Protocol + | |
3952 | data_offset, kl); | |
3953 | }*/ else { | |
3954 | /* check that length of list is not more than bcc */ | |
3955 | /* check that each entry does not go beyond length | |
3956 | of list */ | |
3957 | /* check that each element of each entry does not | |
3958 | go beyond end of list */ | |
3959 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3960 | struct fealist * ea_response_data; | |
3961 | rc = 0; | |
3962 | /* validate_trans2_offsets() */ | |
3963 | /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/ | |
3964 | ea_response_data = (struct fealist *) | |
3965 | (((char *) &pSMBr->hdr.Protocol) + | |
3966 | data_offset); | |
3967 | name_len = le32_to_cpu(ea_response_data->list_len); | |
3968 | cFYI(1,("ea length %d", name_len)); | |
3969 | if(name_len <= 8) { | |
3970 | /* returned EA size zeroed at top of function */ | |
3971 | cFYI(1,("empty EA list returned from server")); | |
3972 | } else { | |
3973 | /* account for ea list len */ | |
3974 | name_len -= 4; | |
3975 | temp_fea = ea_response_data->list; | |
3976 | temp_ptr = (char *)temp_fea; | |
3977 | while(name_len > 0) { | |
3978 | __u16 value_len; | |
3979 | name_len -= 4; | |
3980 | temp_ptr += 4; | |
3981 | rc += temp_fea->name_len; | |
3982 | /* account for prefix user. and trailing null */ | |
3983 | rc = rc + 5 + 1; | |
3984 | if(rc<(int)buf_size) { | |
3985 | memcpy(EAData,"user.",5); | |
3986 | EAData+=5; | |
3987 | memcpy(EAData,temp_ptr,temp_fea->name_len); | |
3988 | EAData+=temp_fea->name_len; | |
3989 | /* null terminate name */ | |
3990 | *EAData = 0; | |
3991 | EAData = EAData + 1; | |
3992 | } else if(buf_size == 0) { | |
3993 | /* skip copy - calc size only */ | |
3994 | } else { | |
3995 | /* stop before overrun buffer */ | |
3996 | rc = -ERANGE; | |
3997 | break; | |
3998 | } | |
3999 | name_len -= temp_fea->name_len; | |
4000 | temp_ptr += temp_fea->name_len; | |
4001 | /* account for trailing null */ | |
4002 | name_len--; | |
4003 | temp_ptr++; | |
4004 | value_len = le16_to_cpu(temp_fea->value_len); | |
4005 | name_len -= value_len; | |
4006 | temp_ptr += value_len; | |
4007 | /* BB check that temp_ptr is still within smb BB*/ | |
4008 | /* no trailing null to account for in value len */ | |
4009 | /* go on to next EA */ | |
4010 | temp_fea = (struct fea *)temp_ptr; | |
4011 | } | |
4012 | } | |
4013 | } | |
4014 | } | |
4015 | if (pSMB) | |
4016 | cifs_buf_release(pSMB); | |
4017 | if (rc == -EAGAIN) | |
4018 | goto QAllEAsRetry; | |
4019 | ||
4020 | return (ssize_t)rc; | |
4021 | } | |
4022 | ||
4023 | ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon, | |
4024 | const unsigned char * searchName,const unsigned char * ea_name, | |
4025 | unsigned char * ea_value, size_t buf_size, | |
737b758c | 4026 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4027 | { |
4028 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4029 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4030 | int rc = 0; | |
4031 | int bytes_returned; | |
4032 | int name_len; | |
4033 | struct fea * temp_fea; | |
4034 | char * temp_ptr; | |
4035 | __u16 params, byte_count; | |
4036 | ||
4037 | cFYI(1, ("In Query EA path %s", searchName)); | |
4038 | QEARetry: | |
4039 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4040 | (void **) &pSMBr); | |
4041 | if (rc) | |
4042 | return rc; | |
4043 | ||
4044 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4045 | name_len = | |
737b758c SF |
4046 | cifsConvertToUCS((__u16 *) pSMB->FileName, searchName, |
4047 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4048 | name_len++; /* trailing null */ |
4049 | name_len *= 2; | |
4050 | } else { /* BB improve the check for buffer overruns BB */ | |
4051 | name_len = strnlen(searchName, PATH_MAX); | |
4052 | name_len++; /* trailing null */ | |
4053 | strncpy(pSMB->FileName, searchName, name_len); | |
4054 | } | |
4055 | ||
4056 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
4057 | pSMB->TotalDataCount = 0; | |
4058 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4059 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
4060 | pSMB->MaxSetupCount = 0; | |
4061 | pSMB->Reserved = 0; | |
4062 | pSMB->Flags = 0; | |
4063 | pSMB->Timeout = 0; | |
4064 | pSMB->Reserved2 = 0; | |
4065 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4066 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
4067 | pSMB->DataCount = 0; | |
4068 | pSMB->DataOffset = 0; | |
4069 | pSMB->SetupCount = 1; | |
4070 | pSMB->Reserved3 = 0; | |
4071 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4072 | byte_count = params + 1 /* pad */ ; | |
4073 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4074 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4075 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
4076 | pSMB->Reserved4 = 0; | |
4077 | pSMB->hdr.smb_buf_length += byte_count; | |
4078 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4079 | ||
4080 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4081 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4082 | if (rc) { | |
4083 | cFYI(1, ("Send error in Query EA = %d", rc)); | |
4084 | } else { /* decode response */ | |
4085 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4086 | ||
4087 | /* BB also check enough total bytes returned */ | |
4088 | /* BB we need to improve the validity checking | |
4089 | of these trans2 responses */ | |
4090 | if (rc || (pSMBr->ByteCount < 4)) | |
4091 | rc = -EIO; /* bad smb */ | |
4092 | /* else if (pFindData){ | |
4093 | memcpy((char *) pFindData, | |
4094 | (char *) &pSMBr->hdr.Protocol + | |
4095 | data_offset, kl); | |
4096 | }*/ else { | |
4097 | /* check that length of list is not more than bcc */ | |
4098 | /* check that each entry does not go beyond length | |
4099 | of list */ | |
4100 | /* check that each element of each entry does not | |
4101 | go beyond end of list */ | |
4102 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4103 | struct fealist * ea_response_data; | |
4104 | rc = -ENODATA; | |
4105 | /* validate_trans2_offsets() */ | |
4106 | /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/ | |
4107 | ea_response_data = (struct fealist *) | |
4108 | (((char *) &pSMBr->hdr.Protocol) + | |
4109 | data_offset); | |
4110 | name_len = le32_to_cpu(ea_response_data->list_len); | |
4111 | cFYI(1,("ea length %d", name_len)); | |
4112 | if(name_len <= 8) { | |
4113 | /* returned EA size zeroed at top of function */ | |
4114 | cFYI(1,("empty EA list returned from server")); | |
4115 | } else { | |
4116 | /* account for ea list len */ | |
4117 | name_len -= 4; | |
4118 | temp_fea = ea_response_data->list; | |
4119 | temp_ptr = (char *)temp_fea; | |
4120 | /* loop through checking if we have a matching | |
4121 | name and then return the associated value */ | |
4122 | while(name_len > 0) { | |
4123 | __u16 value_len; | |
4124 | name_len -= 4; | |
4125 | temp_ptr += 4; | |
4126 | value_len = le16_to_cpu(temp_fea->value_len); | |
4127 | /* BB validate that value_len falls within SMB, | |
4128 | even though maximum for name_len is 255 */ | |
4129 | if(memcmp(temp_fea->name,ea_name, | |
4130 | temp_fea->name_len) == 0) { | |
4131 | /* found a match */ | |
4132 | rc = value_len; | |
4133 | /* account for prefix user. and trailing null */ | |
4134 | if(rc<=(int)buf_size) { | |
4135 | memcpy(ea_value, | |
4136 | temp_fea->name+temp_fea->name_len+1, | |
4137 | rc); | |
4138 | /* ea values, unlike ea names, | |
4139 | are not null terminated */ | |
4140 | } else if(buf_size == 0) { | |
4141 | /* skip copy - calc size only */ | |
4142 | } else { | |
4143 | /* stop before overrun buffer */ | |
4144 | rc = -ERANGE; | |
4145 | } | |
4146 | break; | |
4147 | } | |
4148 | name_len -= temp_fea->name_len; | |
4149 | temp_ptr += temp_fea->name_len; | |
4150 | /* account for trailing null */ | |
4151 | name_len--; | |
4152 | temp_ptr++; | |
4153 | name_len -= value_len; | |
4154 | temp_ptr += value_len; | |
4155 | /* no trailing null to account for in value len */ | |
4156 | /* go on to next EA */ | |
4157 | temp_fea = (struct fea *)temp_ptr; | |
4158 | } | |
4159 | } | |
4160 | } | |
4161 | } | |
4162 | if (pSMB) | |
4163 | cifs_buf_release(pSMB); | |
4164 | if (rc == -EAGAIN) | |
4165 | goto QEARetry; | |
4166 | ||
4167 | return (ssize_t)rc; | |
4168 | } | |
4169 | ||
4170 | int | |
4171 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4172 | const char * ea_name, const void * ea_value, | |
737b758c SF |
4173 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
4174 | int remap) | |
1da177e4 LT |
4175 | { |
4176 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4177 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4178 | struct fealist *parm_data; | |
4179 | int name_len; | |
4180 | int rc = 0; | |
4181 | int bytes_returned = 0; | |
4182 | __u16 params, param_offset, byte_count, offset, count; | |
4183 | ||
4184 | cFYI(1, ("In SetEA")); | |
4185 | SetEARetry: | |
4186 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4187 | (void **) &pSMBr); | |
4188 | if (rc) | |
4189 | return rc; | |
4190 | ||
4191 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4192 | name_len = | |
737b758c SF |
4193 | cifsConvertToUCS((__u16 *) pSMB->FileName, fileName, |
4194 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4195 | name_len++; /* trailing null */ |
4196 | name_len *= 2; | |
4197 | } else { /* BB improve the check for buffer overruns BB */ | |
4198 | name_len = strnlen(fileName, PATH_MAX); | |
4199 | name_len++; /* trailing null */ | |
4200 | strncpy(pSMB->FileName, fileName, name_len); | |
4201 | } | |
4202 | ||
4203 | params = 6 + name_len; | |
4204 | ||
4205 | /* done calculating parms using name_len of file name, | |
4206 | now use name_len to calculate length of ea name | |
4207 | we are going to create in the inode xattrs */ | |
4208 | if(ea_name == NULL) | |
4209 | name_len = 0; | |
4210 | else | |
4211 | name_len = strnlen(ea_name,255); | |
4212 | ||
4213 | count = sizeof(*parm_data) + ea_value_len + name_len + 1; | |
4214 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4215 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
4216 | pSMB->MaxSetupCount = 0; | |
4217 | pSMB->Reserved = 0; | |
4218 | pSMB->Flags = 0; | |
4219 | pSMB->Timeout = 0; | |
4220 | pSMB->Reserved2 = 0; | |
4221 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
4222 | InformationLevel) - 4; | |
4223 | offset = param_offset + params; | |
4224 | pSMB->InformationLevel = | |
4225 | cpu_to_le16(SMB_SET_FILE_EA); | |
4226 | ||
4227 | parm_data = | |
4228 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
4229 | offset); | |
4230 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4231 | pSMB->DataOffset = cpu_to_le16(offset); | |
4232 | pSMB->SetupCount = 1; | |
4233 | pSMB->Reserved3 = 0; | |
4234 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4235 | byte_count = 3 /* pad */ + params + count; | |
4236 | pSMB->DataCount = cpu_to_le16(count); | |
4237 | parm_data->list_len = cpu_to_le32(count); | |
4238 | parm_data->list[0].EA_flags = 0; | |
4239 | /* we checked above that name len is less than 255 */ | |
4240 | parm_data->list[0].name_len = (__u8)name_len;; | |
4241 | /* EA names are always ASCII */ | |
4242 | if(ea_name) | |
4243 | strncpy(parm_data->list[0].name,ea_name,name_len); | |
4244 | parm_data->list[0].name[name_len] = 0; | |
4245 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
4246 | /* caller ensures that ea_value_len is less than 64K but | |
4247 | we need to ensure that it fits within the smb */ | |
4248 | ||
4249 | /*BB add length check that it would fit in negotiated SMB buffer size BB */ | |
4250 | /* if(ea_value_len > buffer_size - 512 (enough for header)) */ | |
4251 | if(ea_value_len) | |
4252 | memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len); | |
4253 | ||
4254 | pSMB->TotalDataCount = pSMB->DataCount; | |
4255 | pSMB->ParameterCount = cpu_to_le16(params); | |
4256 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4257 | pSMB->Reserved4 = 0; | |
4258 | pSMB->hdr.smb_buf_length += byte_count; | |
4259 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4260 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4261 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4262 | if (rc) { | |
4263 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); | |
4264 | } | |
4265 | ||
4266 | cifs_buf_release(pSMB); | |
4267 | ||
4268 | if (rc == -EAGAIN) | |
4269 | goto SetEARetry; | |
4270 | ||
4271 | return rc; | |
4272 | } | |
4273 | ||
4274 | #endif |