Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
12b3b8ff | 4 | * Copyright (C) International Business Machines Corp., 2002,2006 |
1da177e4 LT |
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" | |
eeac8047 | 40 | #include "cifsacl.h" |
1da177e4 LT |
41 | |
42 | #ifdef CONFIG_CIFS_POSIX | |
43 | static struct { | |
44 | int index; | |
45 | char *name; | |
46 | } protocols[] = { | |
47 | {CIFS_PROT, "\2NT LM 0.12"}, | |
48 | {CIFS_PROT, "\2POSIX 2"}, | |
49 | {BAD_PROT, "\2"} | |
50 | }; | |
51 | #else | |
52 | static struct { | |
53 | int index; | |
54 | char *name; | |
55 | } protocols[] = { | |
56 | {CIFS_PROT, "\2NT LM 0.12"}, | |
57 | {BAD_PROT, "\2"} | |
58 | }; | |
59 | #endif | |
60 | ||
61 | ||
62 | /* Mark as invalid, all open files on tree connections since they | |
63 | were closed when session to server was lost */ | |
64 | static void mark_open_files_invalid(struct cifsTconInfo * pTcon) | |
65 | { | |
66 | struct cifsFileInfo *open_file = NULL; | |
67 | struct list_head * tmp; | |
68 | struct list_head * tmp1; | |
69 | ||
70 | /* list all files open on tree connection and mark them invalid */ | |
71 | write_lock(&GlobalSMBSeslock); | |
72 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { | |
73 | open_file = list_entry(tmp,struct cifsFileInfo, tlist); | |
74 | if(open_file) { | |
75 | open_file->invalidHandle = TRUE; | |
76 | } | |
77 | } | |
78 | write_unlock(&GlobalSMBSeslock); | |
09d1db5c SF |
79 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
80 | to this tcon */ | |
1da177e4 LT |
81 | } |
82 | ||
83 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
84 | static int | |
85 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
86 | void **request_buf /* returned */) | |
87 | { | |
88 | int rc = 0; | |
89 | ||
90 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
91 | check for tcp and smb session status done differently | |
92 | for those three - in the calling routine */ | |
93 | if(tcon) { | |
6ab16d24 SF |
94 | if(tcon->tidStatus == CifsExiting) { |
95 | /* only tree disconnect, open, and write, | |
96 | (and ulogoff which does not have tcon) | |
97 | are allowed as we start force umount */ | |
98 | if((smb_command != SMB_COM_WRITE_ANDX) && | |
99 | (smb_command != SMB_COM_OPEN_ANDX) && | |
100 | (smb_command != SMB_COM_TREE_DISCONNECT)) { | |
101 | cFYI(1,("can not send cmd %d while umounting", | |
102 | smb_command)); | |
103 | return -ENODEV; | |
104 | } | |
105 | } | |
31ca3bc3 SF |
106 | if((tcon->ses) && (tcon->ses->status != CifsExiting) && |
107 | (tcon->ses->server)){ | |
1da177e4 LT |
108 | struct nls_table *nls_codepage; |
109 | /* Give Demultiplex thread up to 10 seconds to | |
09d1db5c SF |
110 | reconnect, should be greater than cifs socket |
111 | timeout which is 7 seconds */ | |
1da177e4 LT |
112 | while(tcon->ses->server->tcpStatus == CifsNeedReconnect) { |
113 | wait_event_interruptible_timeout(tcon->ses->server->response_q, | |
114 | (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ); | |
115 | if(tcon->ses->server->tcpStatus == CifsNeedReconnect) { | |
116 | /* on "soft" mounts we wait once */ | |
117 | if((tcon->retry == FALSE) || | |
118 | (tcon->ses->status == CifsExiting)) { | |
119 | cFYI(1,("gave up waiting on reconnect in smb_init")); | |
120 | return -EHOSTDOWN; | |
09d1db5c SF |
121 | } /* else "hard" mount - keep retrying |
122 | until process is killed or server | |
123 | comes back on-line */ | |
1da177e4 LT |
124 | } else /* TCP session is reestablished now */ |
125 | break; | |
126 | ||
127 | } | |
128 | ||
129 | nls_codepage = load_nls_default(); | |
130 | /* need to prevent multiple threads trying to | |
131 | simultaneously reconnect the same SMB session */ | |
132 | down(&tcon->ses->sesSem); | |
133 | if(tcon->ses->status == CifsNeedReconnect) | |
09d1db5c SF |
134 | rc = cifs_setup_session(0, tcon->ses, |
135 | nls_codepage); | |
1da177e4 LT |
136 | if(!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
137 | mark_open_files_invalid(tcon); | |
09d1db5c SF |
138 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon |
139 | , nls_codepage); | |
1da177e4 | 140 | up(&tcon->ses->sesSem); |
3e84469d SF |
141 | /* BB FIXME add code to check if wsize needs |
142 | update due to negotiated smb buffer size | |
143 | shrinking */ | |
1da177e4 LT |
144 | if(rc == 0) |
145 | atomic_inc(&tconInfoReconnectCount); | |
146 | ||
147 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
148 | /* Removed call to reopen open files here - | |
09d1db5c SF |
149 | it is safer (and faster) to reopen files |
150 | one at a time as needed in read and write */ | |
1da177e4 LT |
151 | |
152 | /* Check if handle based operation so we | |
09d1db5c SF |
153 | know whether we can continue or not without |
154 | returning to caller to reset file handle */ | |
1da177e4 LT |
155 | switch(smb_command) { |
156 | case SMB_COM_READ_ANDX: | |
157 | case SMB_COM_WRITE_ANDX: | |
158 | case SMB_COM_CLOSE: | |
159 | case SMB_COM_FIND_CLOSE2: | |
160 | case SMB_COM_LOCKING_ANDX: { | |
161 | unload_nls(nls_codepage); | |
162 | return -EAGAIN; | |
163 | } | |
164 | } | |
165 | } else { | |
166 | up(&tcon->ses->sesSem); | |
167 | } | |
168 | unload_nls(nls_codepage); | |
169 | ||
170 | } else { | |
171 | return -EIO; | |
172 | } | |
173 | } | |
174 | if(rc) | |
175 | return rc; | |
176 | ||
177 | *request_buf = cifs_small_buf_get(); | |
178 | if (*request_buf == NULL) { | |
179 | /* BB should we add a retry in here if not a writepage? */ | |
180 | return -ENOMEM; | |
181 | } | |
182 | ||
183 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct); | |
184 | ||
a4544347 SF |
185 | if(tcon != NULL) |
186 | cifs_stats_inc(&tcon->num_smbs_sent); | |
187 | ||
1da177e4 | 188 | return rc; |
5815449d SF |
189 | } |
190 | ||
191 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
12b3b8ff | 192 | int |
5815449d SF |
193 | small_smb_init_no_tc(const int smb_command, const int wct, |
194 | struct cifsSesInfo *ses, void **request_buf) | |
12b3b8ff SF |
195 | { |
196 | int rc; | |
197 | struct smb_hdr * buffer; | |
198 | ||
5815449d | 199 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
12b3b8ff SF |
200 | if(rc) |
201 | return rc; | |
202 | ||
04fdabe1 | 203 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
204 | buffer->Mid = GetNextMid(ses->server); |
205 | if (ses->capabilities & CAP_UNICODE) | |
206 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 207 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
208 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
209 | ||
210 | /* uid, tid can stay at zero as set in header assemble */ | |
211 | ||
212 | /* BB add support for turning on the signing when | |
213 | this function is used after 1st of session setup requests */ | |
214 | ||
215 | return rc; | |
216 | } | |
5815449d | 217 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
1da177e4 LT |
218 | |
219 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
220 | static int | |
221 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
222 | void **request_buf /* returned */ , | |
223 | void **response_buf /* returned */ ) | |
224 | { | |
225 | int rc = 0; | |
226 | ||
227 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
228 | check for tcp and smb session status done differently | |
229 | for those three - in the calling routine */ | |
230 | if(tcon) { | |
6ab16d24 SF |
231 | if(tcon->tidStatus == CifsExiting) { |
232 | /* only tree disconnect, open, and write, | |
233 | (and ulogoff which does not have tcon) | |
234 | are allowed as we start force umount */ | |
235 | if((smb_command != SMB_COM_WRITE_ANDX) && | |
236 | (smb_command != SMB_COM_OPEN_ANDX) && | |
237 | (smb_command != SMB_COM_TREE_DISCONNECT)) { | |
238 | cFYI(1,("can not send cmd %d while umounting", | |
239 | smb_command)); | |
240 | return -ENODEV; | |
241 | } | |
242 | } | |
243 | ||
31ca3bc3 SF |
244 | if((tcon->ses) && (tcon->ses->status != CifsExiting) && |
245 | (tcon->ses->server)){ | |
1da177e4 | 246 | struct nls_table *nls_codepage; |
09d1db5c SF |
247 | /* Give Demultiplex thread up to 10 seconds to |
248 | reconnect, should be greater than cifs socket | |
249 | timeout which is 7 seconds */ | |
1da177e4 LT |
250 | while(tcon->ses->server->tcpStatus == CifsNeedReconnect) { |
251 | wait_event_interruptible_timeout(tcon->ses->server->response_q, | |
252 | (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ); | |
09d1db5c SF |
253 | if(tcon->ses->server->tcpStatus == |
254 | CifsNeedReconnect) { | |
1da177e4 LT |
255 | /* on "soft" mounts we wait once */ |
256 | if((tcon->retry == FALSE) || | |
257 | (tcon->ses->status == CifsExiting)) { | |
258 | cFYI(1,("gave up waiting on reconnect in smb_init")); | |
259 | return -EHOSTDOWN; | |
09d1db5c SF |
260 | } /* else "hard" mount - keep retrying |
261 | until process is killed or server | |
262 | comes on-line */ | |
1da177e4 LT |
263 | } else /* TCP session is reestablished now */ |
264 | break; | |
265 | ||
266 | } | |
267 | ||
268 | nls_codepage = load_nls_default(); | |
269 | /* need to prevent multiple threads trying to | |
270 | simultaneously reconnect the same SMB session */ | |
271 | down(&tcon->ses->sesSem); | |
272 | if(tcon->ses->status == CifsNeedReconnect) | |
09d1db5c SF |
273 | rc = cifs_setup_session(0, tcon->ses, |
274 | nls_codepage); | |
1da177e4 LT |
275 | if(!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
276 | mark_open_files_invalid(tcon); | |
09d1db5c SF |
277 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
278 | tcon, nls_codepage); | |
1da177e4 | 279 | up(&tcon->ses->sesSem); |
3e84469d SF |
280 | /* BB FIXME add code to check if wsize needs |
281 | update due to negotiated smb buffer size | |
282 | shrinking */ | |
1da177e4 LT |
283 | if(rc == 0) |
284 | atomic_inc(&tconInfoReconnectCount); | |
285 | ||
286 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
287 | /* Removed call to reopen open files here - | |
09d1db5c SF |
288 | it is safer (and faster) to reopen files |
289 | one at a time as needed in read and write */ | |
1da177e4 LT |
290 | |
291 | /* Check if handle based operation so we | |
09d1db5c SF |
292 | know whether we can continue or not without |
293 | returning to caller to reset file handle */ | |
1da177e4 LT |
294 | switch(smb_command) { |
295 | case SMB_COM_READ_ANDX: | |
296 | case SMB_COM_WRITE_ANDX: | |
297 | case SMB_COM_CLOSE: | |
298 | case SMB_COM_FIND_CLOSE2: | |
299 | case SMB_COM_LOCKING_ANDX: { | |
300 | unload_nls(nls_codepage); | |
301 | return -EAGAIN; | |
302 | } | |
303 | } | |
304 | } else { | |
305 | up(&tcon->ses->sesSem); | |
306 | } | |
307 | unload_nls(nls_codepage); | |
308 | ||
309 | } else { | |
310 | return -EIO; | |
311 | } | |
312 | } | |
313 | if(rc) | |
314 | return rc; | |
315 | ||
316 | *request_buf = cifs_buf_get(); | |
317 | if (*request_buf == NULL) { | |
318 | /* BB should we add a retry in here if not a writepage? */ | |
319 | return -ENOMEM; | |
320 | } | |
321 | /* Although the original thought was we needed the response buf for */ | |
322 | /* potential retries of smb operations it turns out we can determine */ | |
323 | /* from the mid flags when the request buffer can be resent without */ | |
324 | /* having to use a second distinct buffer for the response */ | |
325 | *response_buf = *request_buf; | |
326 | ||
327 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
328 | wct /*wct */ ); | |
329 | ||
a4544347 SF |
330 | if(tcon != NULL) |
331 | cifs_stats_inc(&tcon->num_smbs_sent); | |
332 | ||
1da177e4 LT |
333 | return rc; |
334 | } | |
335 | ||
336 | static int validate_t2(struct smb_t2_rsp * pSMB) | |
337 | { | |
338 | int rc = -EINVAL; | |
339 | int total_size; | |
340 | char * pBCC; | |
341 | ||
342 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
343 | /* check for parm and data offset going beyond end of smb */ | |
344 | if(pSMB->hdr.WordCount >= 10) { | |
345 | if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
346 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { | |
347 | /* check that bcc is at least as big as parms + data */ | |
348 | /* check that bcc is less than negotiated smb buffer */ | |
349 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
350 | if(total_size < 512) { | |
351 | total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount); | |
352 | /* BCC le converted in SendReceive */ | |
09d1db5c SF |
353 | pBCC = (pSMB->hdr.WordCount * 2) + |
354 | sizeof(struct smb_hdr) + | |
1da177e4 LT |
355 | (char *)pSMB; |
356 | if((total_size <= (*(u16 *)pBCC)) && | |
357 | (total_size < | |
358 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { | |
359 | return 0; | |
360 | } | |
361 | ||
362 | } | |
363 | } | |
364 | } | |
365 | cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB, | |
366 | sizeof(struct smb_t2_rsp) + 16); | |
367 | return rc; | |
368 | } | |
369 | int | |
370 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
371 | { | |
372 | NEGOTIATE_REQ *pSMB; | |
373 | NEGOTIATE_RSP *pSMBr; | |
374 | int rc = 0; | |
375 | int bytes_returned; | |
376 | struct TCP_Server_Info * server; | |
377 | u16 count; | |
378 | ||
379 | if(ses->server) | |
380 | server = ses->server; | |
381 | else { | |
382 | rc = -EIO; | |
383 | return rc; | |
384 | } | |
385 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
386 | (void **) &pSMB, (void **) &pSMBr); | |
387 | if (rc) | |
388 | return rc; | |
1982c344 | 389 | pSMB->hdr.Mid = GetNextMid(server); |
1da177e4 LT |
390 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; |
391 | if (extended_security) | |
392 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
393 | ||
394 | count = strlen(protocols[0].name) + 1; | |
395 | strncpy(pSMB->DialectsArray, protocols[0].name, 30); | |
396 | /* null guaranteed to be at end of source and target buffers anyway */ | |
397 | ||
398 | pSMB->hdr.smb_buf_length += count; | |
399 | pSMB->ByteCount = cpu_to_le16(count); | |
400 | ||
401 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
402 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
403 | if (rc == 0) { | |
eeac8047 SF |
404 | server->secMode = pSMBr->SecurityMode; |
405 | if((server->secMode & SECMODE_USER) == 0) | |
406 | cFYI(1,("share mode security")); | |
407 | server->secType = NTLM; /* BB override default for | |
09d1db5c SF |
408 | NTLMv2 or kerberos v5 */ |
409 | /* one byte - no need to convert this or EncryptionKeyLen | |
410 | from little endian */ | |
1da177e4 LT |
411 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); |
412 | /* probably no need to store and check maxvcs */ | |
413 | server->maxBuf = | |
414 | min(le32_to_cpu(pSMBr->MaxBufferSize), | |
415 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); | |
416 | server->maxRw = le32_to_cpu(pSMBr->MaxRawSize); | |
eeac8047 | 417 | cFYI(0, ("Max buf = %d", ses->server->maxBuf)); |
1da177e4 LT |
418 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); |
419 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
420 | server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone); | |
421 | /* BB with UTC do we ever need to be using srvr timezone? */ | |
422 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { | |
423 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
424 | CIFS_CRYPTO_KEY_SIZE); | |
425 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
426 | && (pSMBr->EncryptionKeyLength == 0)) { | |
427 | /* decode security blob */ | |
428 | } else | |
429 | rc = -EIO; | |
430 | ||
431 | /* BB might be helpful to save off the domain of server here */ | |
432 | ||
433 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && | |
434 | (server->capabilities & CAP_EXTENDED_SECURITY)) { | |
435 | count = pSMBr->ByteCount; | |
436 | if (count < 16) | |
437 | rc = -EIO; | |
438 | else if (count == 16) { | |
439 | server->secType = RawNTLMSSP; | |
440 | if (server->socketUseCount.counter > 1) { | |
441 | if (memcmp | |
442 | (server->server_GUID, | |
443 | pSMBr->u.extended_response. | |
444 | GUID, 16) != 0) { | |
eeac8047 | 445 | cFYI(1, ("server UID changed")); |
1da177e4 LT |
446 | memcpy(server-> |
447 | server_GUID, | |
448 | pSMBr->u. | |
449 | extended_response. | |
450 | GUID, 16); | |
451 | } | |
452 | } else | |
453 | memcpy(server->server_GUID, | |
454 | pSMBr->u.extended_response. | |
455 | GUID, 16); | |
456 | } else { | |
457 | rc = decode_negTokenInit(pSMBr->u. | |
458 | extended_response. | |
459 | SecurityBlob, | |
460 | count - 16, | |
461 | &server->secType); | |
462 | if(rc == 1) { | |
463 | /* BB Need to fill struct for sessetup here */ | |
464 | rc = -EOPNOTSUPP; | |
465 | } else { | |
466 | rc = -EINVAL; | |
467 | } | |
468 | } | |
469 | } else | |
470 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
471 | if(sign_CIFS_PDUs == FALSE) { | |
472 | if(server->secMode & SECMODE_SIGN_REQUIRED) | |
473 | cERROR(1, | |
474 | ("Server requires /proc/fs/cifs/PacketSigningEnabled")); | |
1982c344 | 475 | server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 LT |
476 | } else if(sign_CIFS_PDUs == 1) { |
477 | if((server->secMode & SECMODE_SIGN_REQUIRED) == 0) | |
1982c344 | 478 | server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 LT |
479 | } |
480 | ||
481 | } | |
1982c344 | 482 | |
4a6d87f1 | 483 | cifs_buf_release(pSMB); |
1da177e4 LT |
484 | return rc; |
485 | } | |
486 | ||
487 | int | |
488 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
489 | { | |
490 | struct smb_hdr *smb_buffer; | |
491 | struct smb_hdr *smb_buffer_response; /* BB removeme BB */ | |
492 | int rc = 0; | |
493 | int length; | |
494 | ||
495 | cFYI(1, ("In tree disconnect")); | |
496 | /* | |
497 | * If last user of the connection and | |
498 | * connection alive - disconnect it | |
499 | * If this is the last connection on the server session disconnect it | |
500 | * (and inside session disconnect we should check if tcp socket needs | |
501 | * to be freed and kernel thread woken up). | |
502 | */ | |
503 | if (tcon) | |
504 | down(&tcon->tconSem); | |
505 | else | |
506 | return -EIO; | |
507 | ||
508 | atomic_dec(&tcon->useCount); | |
509 | if (atomic_read(&tcon->useCount) > 0) { | |
510 | up(&tcon->tconSem); | |
511 | return -EBUSY; | |
512 | } | |
513 | ||
514 | /* No need to return error on this operation if tid invalidated and | |
515 | closed on server already e.g. due to tcp session crashing */ | |
516 | if(tcon->tidStatus == CifsNeedReconnect) { | |
517 | up(&tcon->tconSem); | |
518 | return 0; | |
519 | } | |
520 | ||
521 | if((tcon->ses == NULL) || (tcon->ses->server == NULL)) { | |
522 | up(&tcon->tconSem); | |
523 | return -EIO; | |
524 | } | |
09d1db5c SF |
525 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
526 | (void **)&smb_buffer); | |
1da177e4 LT |
527 | if (rc) { |
528 | up(&tcon->tconSem); | |
529 | return rc; | |
530 | } else { | |
531 | smb_buffer_response = smb_buffer; /* BB removeme BB */ | |
cd63499c | 532 | } |
1da177e4 LT |
533 | rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response, |
534 | &length, 0); | |
535 | if (rc) | |
966ca923 | 536 | cFYI(1, ("Tree disconnect failed %d", rc)); |
1da177e4 LT |
537 | |
538 | if (smb_buffer) | |
539 | cifs_small_buf_release(smb_buffer); | |
540 | up(&tcon->tconSem); | |
541 | ||
542 | /* No need to return error on this operation if tid invalidated and | |
543 | closed on server already e.g. due to tcp session crashing */ | |
544 | if (rc == -EAGAIN) | |
545 | rc = 0; | |
546 | ||
547 | return rc; | |
548 | } | |
549 | ||
550 | int | |
551 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
552 | { | |
553 | struct smb_hdr *smb_buffer_response; | |
554 | LOGOFF_ANDX_REQ *pSMB; | |
555 | int rc = 0; | |
556 | int length; | |
557 | ||
558 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
559 | if (ses) | |
560 | down(&ses->sesSem); | |
561 | else | |
562 | return -EIO; | |
563 | ||
564 | atomic_dec(&ses->inUse); | |
565 | if (atomic_read(&ses->inUse) > 0) { | |
566 | up(&ses->sesSem); | |
567 | return -EBUSY; | |
568 | } | |
569 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); | |
570 | if (rc) { | |
571 | up(&ses->sesSem); | |
572 | return rc; | |
573 | } | |
574 | ||
575 | smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */ | |
576 | ||
577 | if(ses->server) { | |
1982c344 SF |
578 | pSMB->hdr.Mid = GetNextMid(ses->server); |
579 | ||
1da177e4 LT |
580 | if(ses->server->secMode & |
581 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
582 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
583 | } | |
584 | ||
585 | pSMB->hdr.Uid = ses->Suid; | |
586 | ||
587 | pSMB->AndXCommand = 0xFF; | |
588 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
589 | smb_buffer_response, &length, 0); | |
590 | if (ses->server) { | |
591 | atomic_dec(&ses->server->socketUseCount); | |
592 | if (atomic_read(&ses->server->socketUseCount) == 0) { | |
593 | spin_lock(&GlobalMid_Lock); | |
594 | ses->server->tcpStatus = CifsExiting; | |
595 | spin_unlock(&GlobalMid_Lock); | |
596 | rc = -ESHUTDOWN; | |
597 | } | |
598 | } | |
a59c6586 | 599 | up(&ses->sesSem); |
4a6d87f1 | 600 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
601 | |
602 | /* if session dead then we do not need to do ulogoff, | |
603 | since server closed smb session, no sense reporting | |
604 | error */ | |
605 | if (rc == -EAGAIN) | |
606 | rc = 0; | |
607 | return rc; | |
608 | } | |
609 | ||
610 | int | |
737b758c SF |
611 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
612 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
613 | { |
614 | DELETE_FILE_REQ *pSMB = NULL; | |
615 | DELETE_FILE_RSP *pSMBr = NULL; | |
616 | int rc = 0; | |
617 | int bytes_returned; | |
618 | int name_len; | |
619 | ||
620 | DelFileRetry: | |
621 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
622 | (void **) &pSMBr); | |
623 | if (rc) | |
624 | return rc; | |
625 | ||
626 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
627 | name_len = | |
b1a45695 | 628 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 629 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
630 | name_len++; /* trailing null */ |
631 | name_len *= 2; | |
09d1db5c | 632 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
633 | name_len = strnlen(fileName, PATH_MAX); |
634 | name_len++; /* trailing null */ | |
635 | strncpy(pSMB->fileName, fileName, name_len); | |
636 | } | |
637 | pSMB->SearchAttributes = | |
638 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
639 | pSMB->BufferFormat = 0x04; | |
640 | pSMB->hdr.smb_buf_length += name_len + 1; | |
641 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
642 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
643 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 644 | cifs_stats_inc(&tcon->num_deletes); |
1da177e4 LT |
645 | if (rc) { |
646 | cFYI(1, ("Error in RMFile = %d", rc)); | |
647 | } | |
1da177e4 LT |
648 | |
649 | cifs_buf_release(pSMB); | |
650 | if (rc == -EAGAIN) | |
651 | goto DelFileRetry; | |
652 | ||
653 | return rc; | |
654 | } | |
655 | ||
656 | int | |
737b758c SF |
657 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
658 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
659 | { |
660 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
661 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
662 | int rc = 0; | |
663 | int bytes_returned; | |
664 | int name_len; | |
665 | ||
666 | cFYI(1, ("In CIFSSMBRmDir")); | |
667 | RmDirRetry: | |
668 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
669 | (void **) &pSMBr); | |
670 | if (rc) | |
671 | return rc; | |
672 | ||
673 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
674 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
675 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
676 | name_len++; /* trailing null */ |
677 | name_len *= 2; | |
09d1db5c | 678 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
679 | name_len = strnlen(dirName, PATH_MAX); |
680 | name_len++; /* trailing null */ | |
681 | strncpy(pSMB->DirName, dirName, name_len); | |
682 | } | |
683 | ||
684 | pSMB->BufferFormat = 0x04; | |
685 | pSMB->hdr.smb_buf_length += name_len + 1; | |
686 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
687 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
688 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 689 | cifs_stats_inc(&tcon->num_rmdirs); |
1da177e4 LT |
690 | if (rc) { |
691 | cFYI(1, ("Error in RMDir = %d", rc)); | |
692 | } | |
1da177e4 LT |
693 | |
694 | cifs_buf_release(pSMB); | |
695 | if (rc == -EAGAIN) | |
696 | goto RmDirRetry; | |
697 | return rc; | |
698 | } | |
699 | ||
700 | int | |
701 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 702 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
703 | { |
704 | int rc = 0; | |
705 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
706 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
707 | int bytes_returned; | |
708 | int name_len; | |
709 | ||
710 | cFYI(1, ("In CIFSSMBMkDir")); | |
711 | MkDirRetry: | |
712 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
713 | (void **) &pSMBr); | |
714 | if (rc) | |
715 | return rc; | |
716 | ||
717 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 718 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 719 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
720 | name_len++; /* trailing null */ |
721 | name_len *= 2; | |
09d1db5c | 722 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
723 | name_len = strnlen(name, PATH_MAX); |
724 | name_len++; /* trailing null */ | |
725 | strncpy(pSMB->DirName, name, name_len); | |
726 | } | |
727 | ||
728 | pSMB->BufferFormat = 0x04; | |
729 | pSMB->hdr.smb_buf_length += name_len + 1; | |
730 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
731 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
732 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 733 | cifs_stats_inc(&tcon->num_mkdirs); |
1da177e4 LT |
734 | if (rc) { |
735 | cFYI(1, ("Error in Mkdir = %d", rc)); | |
736 | } | |
a5a2b489 | 737 | |
1da177e4 LT |
738 | cifs_buf_release(pSMB); |
739 | if (rc == -EAGAIN) | |
740 | goto MkDirRetry; | |
741 | return rc; | |
742 | } | |
743 | ||
a9d02ad4 SF |
744 | static __u16 convert_disposition(int disposition) |
745 | { | |
746 | __u16 ofun = 0; | |
747 | ||
748 | switch (disposition) { | |
749 | case FILE_SUPERSEDE: | |
750 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
751 | break; | |
752 | case FILE_OPEN: | |
753 | ofun = SMBOPEN_OAPPEND; | |
754 | break; | |
755 | case FILE_CREATE: | |
756 | ofun = SMBOPEN_OCREATE; | |
757 | break; | |
758 | case FILE_OPEN_IF: | |
759 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
760 | break; | |
761 | case FILE_OVERWRITE: | |
762 | ofun = SMBOPEN_OTRUNC; | |
763 | break; | |
764 | case FILE_OVERWRITE_IF: | |
765 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
766 | break; | |
767 | default: | |
768 | cFYI(1,("unknown disposition %d",disposition)); | |
769 | ofun = SMBOPEN_OAPPEND; /* regular open */ | |
770 | } | |
771 | return ofun; | |
772 | } | |
773 | ||
774 | int | |
775 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
776 | const char *fileName, const int openDisposition, | |
777 | const int access_flags, const int create_options, __u16 * netfid, | |
778 | int *pOplock, FILE_ALL_INFO * pfile_info, | |
779 | const struct nls_table *nls_codepage, int remap) | |
780 | { | |
781 | int rc = -EACCES; | |
782 | OPENX_REQ *pSMB = NULL; | |
783 | OPENX_RSP *pSMBr = NULL; | |
784 | int bytes_returned; | |
785 | int name_len; | |
786 | __u16 count; | |
787 | ||
788 | OldOpenRetry: | |
789 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
790 | (void **) &pSMBr); | |
791 | if (rc) | |
792 | return rc; | |
793 | ||
794 | pSMB->AndXCommand = 0xFF; /* none */ | |
795 | ||
796 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
797 | count = 1; /* account for one byte pad to word boundary */ | |
798 | name_len = | |
799 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
800 | fileName, PATH_MAX, nls_codepage, remap); | |
801 | name_len++; /* trailing null */ | |
802 | name_len *= 2; | |
803 | } else { /* BB improve check for buffer overruns BB */ | |
804 | count = 0; /* no pad */ | |
805 | name_len = strnlen(fileName, PATH_MAX); | |
806 | name_len++; /* trailing null */ | |
807 | strncpy(pSMB->fileName, fileName, name_len); | |
808 | } | |
809 | if (*pOplock & REQ_OPLOCK) | |
810 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
811 | else if (*pOplock & REQ_BATCHOPLOCK) { | |
812 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); | |
813 | } | |
814 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); | |
815 | /* BB fixme add conversion for access_flags to bits 0 - 2 of mode */ | |
816 | /* 0 = read | |
817 | 1 = write | |
818 | 2 = rw | |
819 | 3 = execute | |
820 | */ | |
821 | pSMB->Mode = cpu_to_le16(2); | |
822 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ | |
823 | /* set file as system file if special file such | |
824 | as fifo and server expecting SFU style and | |
825 | no Unix extensions */ | |
826 | ||
827 | if(create_options & CREATE_OPTION_SPECIAL) | |
828 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
829 | else | |
3e87d803 | 830 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); /* BB FIXME */ |
a9d02ad4 SF |
831 | |
832 | /* if ((omode & S_IWUGO) == 0) | |
833 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/ | |
834 | /* Above line causes problems due to vfs splitting create into two | |
835 | pieces - need to set mode after file created not while it is | |
836 | being created */ | |
837 | ||
838 | /* BB FIXME BB */ | |
839 | /* pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); */ | |
840 | /* BB FIXME END BB */ | |
3e87d803 SF |
841 | |
842 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 843 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
844 | count += name_len; |
845 | pSMB->hdr.smb_buf_length += count; | |
846 | ||
847 | pSMB->ByteCount = cpu_to_le16(count); | |
848 | /* long_op set to 1 to allow for oplock break timeouts */ | |
849 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
850 | (struct smb_hdr *) pSMBr, &bytes_returned, 1); | |
851 | cifs_stats_inc(&tcon->num_opens); | |
852 | if (rc) { | |
853 | cFYI(1, ("Error in Open = %d", rc)); | |
854 | } else { | |
855 | /* BB verify if wct == 15 */ | |
856 | ||
857 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field BB */ | |
858 | ||
859 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
860 | /* Let caller know file was created so we can set the mode. */ | |
861 | /* Do we care about the CreateAction in any other cases? */ | |
862 | /* BB FIXME BB */ | |
863 | /* if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) | |
864 | *pOplock |= CIFS_CREATE_ACTION; */ | |
865 | /* BB FIXME END */ | |
866 | ||
867 | if(pfile_info) { | |
868 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ | |
869 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
870 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
871 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a SF |
872 | pfile_info->Attributes = |
873 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); | |
a9d02ad4 | 874 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
875 | pfile_info->AllocationSize = |
876 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
877 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 SF |
878 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
879 | } | |
880 | } | |
881 | ||
882 | cifs_buf_release(pSMB); | |
883 | if (rc == -EAGAIN) | |
884 | goto OldOpenRetry; | |
885 | return rc; | |
886 | } | |
887 | ||
1da177e4 LT |
888 | int |
889 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
890 | const char *fileName, const int openDisposition, | |
891 | const int access_flags, const int create_options, __u16 * netfid, | |
892 | int *pOplock, FILE_ALL_INFO * pfile_info, | |
737b758c | 893 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
894 | { |
895 | int rc = -EACCES; | |
896 | OPEN_REQ *pSMB = NULL; | |
897 | OPEN_RSP *pSMBr = NULL; | |
898 | int bytes_returned; | |
899 | int name_len; | |
900 | __u16 count; | |
901 | ||
902 | openRetry: | |
903 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
904 | (void **) &pSMBr); | |
905 | if (rc) | |
906 | return rc; | |
907 | ||
908 | pSMB->AndXCommand = 0xFF; /* none */ | |
909 | ||
910 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
911 | count = 1; /* account for one byte pad to word boundary */ | |
912 | name_len = | |
b1a45695 | 913 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 914 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
915 | name_len++; /* trailing null */ |
916 | name_len *= 2; | |
917 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 918 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
919 | count = 0; /* no pad */ |
920 | name_len = strnlen(fileName, PATH_MAX); | |
921 | name_len++; /* trailing null */ | |
922 | pSMB->NameLength = cpu_to_le16(name_len); | |
923 | strncpy(pSMB->fileName, fileName, name_len); | |
924 | } | |
925 | if (*pOplock & REQ_OPLOCK) | |
926 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
927 | else if (*pOplock & REQ_BATCHOPLOCK) { | |
928 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
929 | } | |
930 | pSMB->DesiredAccess = cpu_to_le32(access_flags); | |
931 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
932 | /* set file as system file if special file such |
933 | as fifo and server expecting SFU style and | |
934 | no Unix extensions */ | |
935 | if(create_options & CREATE_OPTION_SPECIAL) | |
936 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); | |
937 | else | |
938 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
1da177e4 LT |
939 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
940 | /* but it helps speed up case sensitive checks for other | |
941 | servers such as Samba */ | |
942 | if (tcon->ses->capabilities & CAP_UNIX) | |
943 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
944 | ||
945 | /* if ((omode & S_IWUGO) == 0) | |
946 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/ | |
947 | /* Above line causes problems due to vfs splitting create into two | |
948 | pieces - need to set mode after file created not while it is | |
949 | being created */ | |
950 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
951 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 952 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
953 | /* BB Expirement with various impersonation levels and verify */ |
954 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
955 | pSMB->SecurityFlags = |
956 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
957 | ||
958 | count += name_len; | |
959 | pSMB->hdr.smb_buf_length += count; | |
960 | ||
961 | pSMB->ByteCount = cpu_to_le16(count); | |
962 | /* long_op set to 1 to allow for oplock break timeouts */ | |
963 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
964 | (struct smb_hdr *) pSMBr, &bytes_returned, 1); | |
a4544347 | 965 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 LT |
966 | if (rc) { |
967 | cFYI(1, ("Error in Open = %d", rc)); | |
968 | } else { | |
09d1db5c | 969 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
970 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
971 | /* Let caller know file was created so we can set the mode. */ | |
972 | /* Do we care about the CreateAction in any other cases? */ | |
973 | if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) | |
974 | *pOplock |= CIFS_CREATE_ACTION; | |
975 | if(pfile_info) { | |
976 | memcpy((char *)pfile_info,(char *)&pSMBr->CreationTime, | |
977 | 36 /* CreationTime to Attributes */); | |
978 | /* the file_info buf is endian converted by caller */ | |
979 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
980 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
981 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
982 | } | |
1da177e4 | 983 | } |
a5a2b489 | 984 | |
1da177e4 LT |
985 | cifs_buf_release(pSMB); |
986 | if (rc == -EAGAIN) | |
987 | goto openRetry; | |
988 | return rc; | |
989 | } | |
990 | ||
1da177e4 LT |
991 | int |
992 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, | |
ec637e3f SF |
993 | const int netfid, const unsigned int count, |
994 | const __u64 lseek, unsigned int *nbytes, char **buf, | |
995 | int * pbuf_type) | |
1da177e4 LT |
996 | { |
997 | int rc = -EACCES; | |
998 | READ_REQ *pSMB = NULL; | |
999 | READ_RSP *pSMBr = NULL; | |
1000 | char *pReadData = NULL; | |
bfa0d75a | 1001 | int wct; |
ec637e3f SF |
1002 | int resp_buf_type = 0; |
1003 | struct kvec iov[1]; | |
1da177e4 LT |
1004 | |
1005 | cFYI(1,("Reading %d bytes on fid %d",count,netfid)); | |
bfa0d75a SF |
1006 | if(tcon->ses->capabilities & CAP_LARGE_FILES) |
1007 | wct = 12; | |
1008 | else | |
1009 | wct = 10; /* old style read */ | |
1da177e4 LT |
1010 | |
1011 | *nbytes = 0; | |
ec637e3f | 1012 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1013 | if (rc) |
1014 | return rc; | |
1015 | ||
1016 | /* tcon and ses pointer are checked in smb_init */ | |
1017 | if (tcon->ses->server == NULL) | |
1018 | return -ECONNABORTED; | |
1019 | ||
ec637e3f | 1020 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1021 | pSMB->Fid = netfid; |
1022 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
bfa0d75a SF |
1023 | if(wct == 12) |
1024 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); | |
ec637e3f SF |
1025 | else if((lseek >> 32) > 0) /* can not handle this big offset for old */ |
1026 | return -EIO; | |
bfa0d75a | 1027 | |
1da177e4 LT |
1028 | pSMB->Remaining = 0; |
1029 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1030 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
bfa0d75a SF |
1031 | if(wct == 12) |
1032 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ | |
1033 | else { | |
1034 | /* old style read */ | |
ec637e3f | 1035 | struct smb_com_readx_req * pSMBW = |
bfa0d75a | 1036 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1037 | pSMBW->ByteCount = 0; |
bfa0d75a | 1038 | } |
ec637e3f SF |
1039 | |
1040 | iov[0].iov_base = (char *)pSMB; | |
1041 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1042 | rc = SendReceive2(xid, tcon->ses, iov, | |
1043 | 1 /* num iovecs */, | |
1044 | &resp_buf_type, 0); | |
a4544347 | 1045 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1046 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 LT |
1047 | if (rc) { |
1048 | cERROR(1, ("Send error in read = %d", rc)); | |
1049 | } else { | |
1050 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1051 | data_length = data_length << 16; | |
1052 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1053 | *nbytes = data_length; | |
1054 | ||
1055 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1056 | if ((data_length > CIFSMaxBufSize) |
1da177e4 LT |
1057 | || (data_length > count)) { |
1058 | cFYI(1,("bad length %d for count %d",data_length,count)); | |
1059 | rc = -EIO; | |
1060 | *nbytes = 0; | |
1061 | } else { | |
ec637e3f | 1062 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
1da177e4 | 1063 | le16_to_cpu(pSMBr->DataOffset); |
ec637e3f SF |
1064 | /* if(rc = copy_to_user(buf, pReadData, data_length)) { |
1065 | cERROR(1,("Faulting on read rc = %d",rc)); | |
1066 | rc = -EFAULT; | |
1067 | }*/ /* can not use copy_to_user when using page cache*/ | |
1da177e4 | 1068 | if(*buf) |
ec637e3f | 1069 | memcpy(*buf,pReadData,data_length); |
1da177e4 LT |
1070 | } |
1071 | } | |
1da177e4 | 1072 | |
4b8f930f | 1073 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
ec637e3f SF |
1074 | if(*buf) { |
1075 | if(resp_buf_type == CIFS_SMALL_BUFFER) | |
1076 | cifs_small_buf_release(iov[0].iov_base); | |
1077 | else if(resp_buf_type == CIFS_LARGE_BUFFER) | |
1078 | cifs_buf_release(iov[0].iov_base); | |
6cec2aed SF |
1079 | } else if(resp_buf_type != CIFS_NO_BUFFER) { |
1080 | /* return buffer to caller to free */ | |
1081 | *buf = iov[0].iov_base; | |
ec637e3f SF |
1082 | if(resp_buf_type == CIFS_SMALL_BUFFER) |
1083 | *pbuf_type = CIFS_SMALL_BUFFER; | |
1084 | else if(resp_buf_type == CIFS_LARGE_BUFFER) | |
1085 | *pbuf_type = CIFS_LARGE_BUFFER; | |
6cec2aed | 1086 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1087 | |
1088 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1089 | since file handle passed in no longer valid */ |
1090 | return rc; | |
1091 | } | |
1092 | ||
ec637e3f | 1093 | |
1da177e4 LT |
1094 | int |
1095 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1096 | const int netfid, const unsigned int count, | |
1097 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
1098 | const char __user * ubuf, const int long_op) | |
1099 | { | |
1100 | int rc = -EACCES; | |
1101 | WRITE_REQ *pSMB = NULL; | |
1102 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1103 | int bytes_returned, wct; |
1da177e4 LT |
1104 | __u32 bytes_sent; |
1105 | __u16 byte_count; | |
1106 | ||
1107 | /* cFYI(1,("write at %lld %d bytes",offset,count));*/ | |
1c955187 SF |
1108 | if(tcon->ses == NULL) |
1109 | return -ECONNABORTED; | |
1110 | ||
1111 | if(tcon->ses->capabilities & CAP_LARGE_FILES) | |
1112 | wct = 14; | |
1113 | else | |
1114 | wct = 12; | |
1115 | ||
1116 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1117 | (void **) &pSMBr); |
1118 | if (rc) | |
1119 | return rc; | |
1120 | /* tcon and ses pointer are checked in smb_init */ | |
1121 | if (tcon->ses->server == NULL) | |
1122 | return -ECONNABORTED; | |
1123 | ||
1124 | pSMB->AndXCommand = 0xFF; /* none */ | |
1125 | pSMB->Fid = netfid; | |
1126 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
1c955187 SF |
1127 | if(wct == 14) |
1128 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); | |
1129 | else if((offset >> 32) > 0) /* can not handle this big offset for old */ | |
1130 | return -EIO; | |
1131 | ||
1da177e4 LT |
1132 | pSMB->Reserved = 0xFFFFFFFF; |
1133 | pSMB->WriteMode = 0; | |
1134 | pSMB->Remaining = 0; | |
1135 | ||
1136 | /* Can increase buffer size if buffer is big enough in some cases - ie we | |
1137 | can send more if LARGE_WRITE_X capability returned by the server and if | |
1138 | our buffer is big enough or if we convert to iovecs on socket writes | |
1139 | and eliminate the copy to the CIFS buffer */ | |
1140 | if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) { | |
1141 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); | |
1142 | } else { | |
1143 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1144 | & ~0xFF; | |
1145 | } | |
1146 | ||
1147 | if (bytes_sent > count) | |
1148 | bytes_sent = count; | |
1149 | pSMB->DataOffset = | |
e30dcf3a | 1150 | cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); |
1da177e4 LT |
1151 | if(buf) |
1152 | memcpy(pSMB->Data,buf,bytes_sent); | |
1153 | else if(ubuf) { | |
1154 | if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) { | |
1155 | cifs_buf_release(pSMB); | |
1156 | return -EFAULT; | |
1157 | } | |
e30dcf3a | 1158 | } else if (count != 0) { |
1da177e4 LT |
1159 | /* No buffer */ |
1160 | cifs_buf_release(pSMB); | |
1161 | return -EINVAL; | |
e30dcf3a SF |
1162 | } /* else setting file size with write of zero bytes */ |
1163 | if(wct == 14) | |
1164 | byte_count = bytes_sent + 1; /* pad */ | |
1165 | else /* wct == 12 */ { | |
1166 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ | |
1da177e4 | 1167 | } |
1da177e4 LT |
1168 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1169 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1170 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 SF |
1171 | |
1172 | if(wct == 14) | |
1173 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
e30dcf3a | 1174 | else { /* old style write has byte count 4 bytes earlier so 4 bytes pad */ |
1c955187 SF |
1175 | struct smb_com_writex_req * pSMBW = |
1176 | (struct smb_com_writex_req *)pSMB; | |
1177 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1178 | } | |
1da177e4 LT |
1179 | |
1180 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1181 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1182 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 LT |
1183 | if (rc) { |
1184 | cFYI(1, ("Send error in write = %d", rc)); | |
1185 | *nbytes = 0; | |
1186 | } else { | |
1187 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1188 | *nbytes = (*nbytes) << 16; | |
1189 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1190 | } | |
1191 | ||
1192 | cifs_buf_release(pSMB); | |
1193 | ||
1194 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1195 | since file handle passed in no longer valid */ | |
1196 | ||
1197 | return rc; | |
1198 | } | |
1199 | ||
d6e04ae6 SF |
1200 | int |
1201 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1202 | const int netfid, const unsigned int count, |
3e84469d SF |
1203 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1204 | int n_vec, const int long_op) | |
1da177e4 LT |
1205 | { |
1206 | int rc = -EACCES; | |
1207 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1208 | int wct; |
d6e04ae6 | 1209 | int smb_hdr_len; |
ec637e3f | 1210 | int resp_buf_type = 0; |
1da177e4 | 1211 | |
ff7feac9 SF |
1212 | cFYI(1,("write2 at %lld %d bytes", (long long)offset, count)); |
1213 | ||
8cc64c6e SF |
1214 | if(tcon->ses->capabilities & CAP_LARGE_FILES) |
1215 | wct = 14; | |
1216 | else | |
1217 | wct = 12; | |
1218 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); | |
1da177e4 LT |
1219 | if (rc) |
1220 | return rc; | |
1da177e4 LT |
1221 | /* tcon and ses pointer are checked in smb_init */ |
1222 | if (tcon->ses->server == NULL) | |
1223 | return -ECONNABORTED; | |
1224 | ||
d6e04ae6 | 1225 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1226 | pSMB->Fid = netfid; |
1227 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
8cc64c6e SF |
1228 | if(wct == 14) |
1229 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); | |
1230 | else if((offset >> 32) > 0) /* can not handle this big offset for old */ | |
1231 | return -EIO; | |
1da177e4 LT |
1232 | pSMB->Reserved = 0xFFFFFFFF; |
1233 | pSMB->WriteMode = 0; | |
1234 | pSMB->Remaining = 0; | |
d6e04ae6 | 1235 | |
1da177e4 LT |
1236 | pSMB->DataOffset = |
1237 | cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); | |
1238 | ||
3e84469d SF |
1239 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1240 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1241 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
8cc64c6e SF |
1242 | if(wct == 14) |
1243 | pSMB->hdr.smb_buf_length += count+1; | |
1244 | else /* wct == 12 */ | |
1245 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ | |
1246 | if(wct == 14) | |
1247 | pSMB->ByteCount = cpu_to_le16(count + 1); | |
1248 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
1249 | struct smb_com_writex_req * pSMBW = | |
1250 | (struct smb_com_writex_req *)pSMB; | |
1251 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1252 | } | |
3e84469d | 1253 | iov[0].iov_base = pSMB; |
ec637e3f SF |
1254 | if(wct == 14) |
1255 | iov[0].iov_len = smb_hdr_len + 4; | |
1256 | else /* wct == 12 pad bigger by four bytes */ | |
1257 | iov[0].iov_len = smb_hdr_len + 8; | |
1258 | ||
1da177e4 | 1259 | |
ec637e3f | 1260 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
3e84469d | 1261 | long_op); |
a4544347 | 1262 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1263 | if (rc) { |
8cc64c6e | 1264 | cFYI(1, ("Send error Write2 = %d", rc)); |
1da177e4 | 1265 | *nbytes = 0; |
ec637e3f SF |
1266 | } else if(resp_buf_type == 0) { |
1267 | /* presumably this can not happen, but best to be safe */ | |
1268 | rc = -EIO; | |
1269 | *nbytes = 0; | |
d6e04ae6 | 1270 | } else { |
ec637e3f | 1271 | WRITE_RSP * pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1272 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1273 | *nbytes = (*nbytes) << 16; | |
1274 | *nbytes += le16_to_cpu(pSMBr->Count); | |
84afc29b | 1275 | } |
1da177e4 | 1276 | |
4b8f930f | 1277 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
ec637e3f SF |
1278 | if(resp_buf_type == CIFS_SMALL_BUFFER) |
1279 | cifs_small_buf_release(iov[0].iov_base); | |
1280 | else if(resp_buf_type == CIFS_LARGE_BUFFER) | |
1281 | cifs_buf_release(iov[0].iov_base); | |
1da177e4 LT |
1282 | |
1283 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1284 | since file handle passed in no longer valid */ | |
1285 | ||
1286 | return rc; | |
1287 | } | |
d6e04ae6 SF |
1288 | |
1289 | ||
1da177e4 LT |
1290 | int |
1291 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1292 | const __u16 smb_file_id, const __u64 len, | |
1293 | const __u64 offset, const __u32 numUnlock, | |
1294 | const __u32 numLock, const __u8 lockType, const int waitFlag) | |
1295 | { | |
1296 | int rc = 0; | |
1297 | LOCK_REQ *pSMB = NULL; | |
1298 | LOCK_RSP *pSMBr = NULL; | |
1299 | int bytes_returned; | |
1300 | int timeout = 0; | |
1301 | __u16 count; | |
1302 | ||
1303 | cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock)); | |
46810cbf SF |
1304 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1305 | ||
1da177e4 LT |
1306 | if (rc) |
1307 | return rc; | |
1308 | ||
46810cbf SF |
1309 | pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */ |
1310 | ||
1da177e4 LT |
1311 | if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
1312 | timeout = -1; /* no response expected */ | |
1313 | pSMB->Timeout = 0; | |
1314 | } else if (waitFlag == TRUE) { | |
1315 | timeout = 3; /* blocking operation, no timeout */ | |
1316 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ | |
1317 | } else { | |
1318 | pSMB->Timeout = 0; | |
1319 | } | |
1320 | ||
1321 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1322 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1323 | pSMB->LockType = lockType; | |
1324 | pSMB->AndXCommand = 0xFF; /* none */ | |
1325 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1326 | ||
1327 | if((numLock != 0) || (numUnlock != 0)) { | |
1328 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); | |
1329 | /* BB where to store pid high? */ | |
1330 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1331 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1332 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1333 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1334 | count = sizeof(LOCKING_ANDX_RANGE); | |
1335 | } else { | |
1336 | /* oplock break */ | |
1337 | count = 0; | |
1338 | } | |
1339 | pSMB->hdr.smb_buf_length += count; | |
1340 | pSMB->ByteCount = cpu_to_le16(count); | |
1341 | ||
1342 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1343 | (struct smb_hdr *) pSMBr, &bytes_returned, timeout); | |
a4544347 | 1344 | cifs_stats_inc(&tcon->num_locks); |
1da177e4 LT |
1345 | if (rc) { |
1346 | cFYI(1, ("Send error in Lock = %d", rc)); | |
1347 | } | |
46810cbf | 1348 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
1349 | |
1350 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1351 | since file handle passed in no longer valid */ | |
1352 | return rc; | |
1353 | } | |
1354 | ||
08547b03 SF |
1355 | int |
1356 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1357 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
fc94cdb9 SF |
1358 | struct file_lock *pLockData, const __u16 lock_type, |
1359 | const int waitFlag) | |
08547b03 SF |
1360 | { |
1361 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1362 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
1363 | char *data_offset; | |
1364 | struct cifs_posix_lock *parm_data; | |
1365 | int rc = 0; | |
1366 | int bytes_returned = 0; | |
1367 | __u16 params, param_offset, offset, byte_count, count; | |
1368 | ||
1369 | cFYI(1, ("Posix Lock")); | |
fc94cdb9 SF |
1370 | |
1371 | if(pLockData == NULL) | |
1372 | return EINVAL; | |
1373 | ||
08547b03 SF |
1374 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1375 | ||
1376 | if (rc) | |
1377 | return rc; | |
1378 | ||
1379 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1380 | ||
1381 | params = 6; | |
1382 | pSMB->MaxSetupCount = 0; | |
1383 | pSMB->Reserved = 0; | |
1384 | pSMB->Flags = 0; | |
1385 | pSMB->Timeout = 0; | |
1386 | pSMB->Reserved2 = 0; | |
1387 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1388 | offset = param_offset + params; | |
1389 | ||
1390 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1391 | ||
1392 | count = sizeof(struct cifs_posix_lock); | |
1393 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1394 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
1395 | pSMB->SetupCount = 1; | |
1396 | pSMB->Reserved3 = 0; | |
1397 | if(get_flag) | |
1398 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
1399 | else | |
1400 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1401 | byte_count = 3 /* pad */ + params + count; | |
1402 | pSMB->DataCount = cpu_to_le16(count); | |
1403 | pSMB->ParameterCount = cpu_to_le16(params); | |
1404 | pSMB->TotalDataCount = pSMB->DataCount; | |
1405 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1406 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1407 | parm_data = (struct cifs_posix_lock *) | |
1408 | (((char *) &pSMB->hdr.Protocol) + offset); | |
1409 | ||
1410 | parm_data->lock_type = cpu_to_le16(lock_type); | |
1411 | if(waitFlag) | |
cec6815a | 1412 | parm_data->lock_flags = cpu_to_le16(1); |
08547b03 | 1413 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1414 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1415 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1416 | |
1417 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1418 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1419 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1420 | pSMB->Reserved4 = 0; | |
1421 | pSMB->hdr.smb_buf_length += byte_count; | |
1422 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1423 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1424 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1425 | if (rc) { | |
1426 | cFYI(1, ("Send error in Posix Lock = %d", rc)); | |
fc94cdb9 SF |
1427 | } else if (get_flag) { |
1428 | /* lock structure can be returned on get */ | |
1429 | __u16 data_offset; | |
1430 | __u16 data_count; | |
1431 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1432 | ||
1433 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1434 | rc = -EIO; /* bad smb */ | |
1435 | goto plk_err_exit; | |
1436 | } | |
1437 | if(pLockData == NULL) { | |
1438 | rc = -EINVAL; | |
1439 | goto plk_err_exit; | |
1440 | } | |
1441 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1442 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
1443 | if(data_count < sizeof(struct cifs_posix_lock)) { | |
1444 | rc = -EIO; | |
1445 | goto plk_err_exit; | |
1446 | } | |
1447 | parm_data = (struct cifs_posix_lock *) | |
1448 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
1449 | if(parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) | |
1450 | pLockData->fl_type = F_UNLCK; | |
08547b03 | 1451 | } |
fc94cdb9 SF |
1452 | |
1453 | plk_err_exit: | |
08547b03 SF |
1454 | if (pSMB) |
1455 | cifs_small_buf_release(pSMB); | |
1456 | ||
1457 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1458 | since file handle passed in no longer valid */ | |
1459 | ||
1460 | return rc; | |
1461 | } | |
1462 | ||
1463 | ||
1da177e4 LT |
1464 | int |
1465 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1466 | { | |
1467 | int rc = 0; | |
1468 | CLOSE_REQ *pSMB = NULL; | |
1469 | CLOSE_RSP *pSMBr = NULL; | |
1470 | int bytes_returned; | |
1471 | cFYI(1, ("In CIFSSMBClose")); | |
1472 | ||
1473 | /* do not retry on dead session on close */ | |
1474 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
1475 | if(rc == -EAGAIN) | |
1476 | return 0; | |
1477 | if (rc) | |
1478 | return rc; | |
1479 | ||
1480 | pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ | |
1481 | ||
1482 | pSMB->FileID = (__u16) smb_file_id; | |
1483 | pSMB->LastWriteTime = 0; | |
1484 | pSMB->ByteCount = 0; | |
1485 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1486 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1487 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 LT |
1488 | if (rc) { |
1489 | if(rc!=-EINTR) { | |
1490 | /* EINTR is expected when user ctl-c to kill app */ | |
1491 | cERROR(1, ("Send error in Close = %d", rc)); | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | cifs_small_buf_release(pSMB); | |
1496 | ||
1497 | /* Since session is dead, file will be closed on server already */ | |
1498 | if(rc == -EAGAIN) | |
1499 | rc = 0; | |
1500 | ||
1501 | return rc; | |
1502 | } | |
1503 | ||
1504 | int | |
1505 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1506 | const char *fromName, const char *toName, | |
737b758c | 1507 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1508 | { |
1509 | int rc = 0; | |
1510 | RENAME_REQ *pSMB = NULL; | |
1511 | RENAME_RSP *pSMBr = NULL; | |
1512 | int bytes_returned; | |
1513 | int name_len, name_len2; | |
1514 | __u16 count; | |
1515 | ||
1516 | cFYI(1, ("In CIFSSMBRename")); | |
1517 | renameRetry: | |
1518 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1519 | (void **) &pSMBr); | |
1520 | if (rc) | |
1521 | return rc; | |
1522 | ||
1523 | pSMB->BufferFormat = 0x04; | |
1524 | pSMB->SearchAttributes = | |
1525 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1526 | ATTR_DIRECTORY); | |
1527 | ||
1528 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1529 | name_len = | |
b1a45695 | 1530 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1531 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1532 | name_len++; /* trailing null */ |
1533 | name_len *= 2; | |
1534 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1535 | /* protocol requires ASCII signature byte on Unicode string */ | |
1536 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1537 | name_len2 = | |
b1a45695 | 1538 | cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2], |
737b758c | 1539 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1540 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1541 | name_len2 *= 2; /* convert to bytes */ | |
1542 | } else { /* BB improve the check for buffer overruns BB */ | |
1543 | name_len = strnlen(fromName, PATH_MAX); | |
1544 | name_len++; /* trailing null */ | |
1545 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1546 | name_len2 = strnlen(toName, PATH_MAX); | |
1547 | name_len2++; /* trailing null */ | |
1548 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1549 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1550 | name_len2++; /* trailing null */ | |
1551 | name_len2++; /* signature byte */ | |
1552 | } | |
1553 | ||
1554 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1555 | pSMB->hdr.smb_buf_length += count; | |
1556 | pSMB->ByteCount = cpu_to_le16(count); | |
1557 | ||
1558 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1559 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1560 | cifs_stats_inc(&tcon->num_renames); |
1da177e4 LT |
1561 | if (rc) { |
1562 | cFYI(1, ("Send error in rename = %d", rc)); | |
1563 | } | |
1564 | ||
1da177e4 LT |
1565 | cifs_buf_release(pSMB); |
1566 | ||
1567 | if (rc == -EAGAIN) | |
1568 | goto renameRetry; | |
1569 | ||
1570 | return rc; | |
1571 | } | |
1572 | ||
1573 | int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon, | |
737b758c SF |
1574 | int netfid, char * target_name, |
1575 | const struct nls_table * nls_codepage, int remap) | |
1da177e4 LT |
1576 | { |
1577 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1578 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
1579 | struct set_file_rename * rename_info; | |
1580 | char *data_offset; | |
1581 | char dummy_string[30]; | |
1582 | int rc = 0; | |
1583 | int bytes_returned = 0; | |
1584 | int len_of_str; | |
1585 | __u16 params, param_offset, offset, count, byte_count; | |
1586 | ||
1587 | cFYI(1, ("Rename to File by handle")); | |
1588 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
1589 | (void **) &pSMBr); | |
1590 | if (rc) | |
1591 | return rc; | |
1592 | ||
1593 | params = 6; | |
1594 | pSMB->MaxSetupCount = 0; | |
1595 | pSMB->Reserved = 0; | |
1596 | pSMB->Flags = 0; | |
1597 | pSMB->Timeout = 0; | |
1598 | pSMB->Reserved2 = 0; | |
1599 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1600 | offset = param_offset + params; | |
1601 | ||
1602 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1603 | rename_info = (struct set_file_rename *) data_offset; | |
1604 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1605 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
1606 | pSMB->SetupCount = 1; | |
1607 | pSMB->Reserved3 = 0; | |
1608 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1609 | byte_count = 3 /* pad */ + params; | |
1610 | pSMB->ParameterCount = cpu_to_le16(params); | |
1611 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1612 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1613 | pSMB->DataOffset = cpu_to_le16(offset); | |
1614 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
1615 | rename_info->overwrite = cpu_to_le32(1); | |
1616 | rename_info->root_fid = 0; | |
1617 | /* unicode only call */ | |
1618 | if(target_name == NULL) { | |
1619 | sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid); | |
b1a45695 | 1620 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
737b758c | 1621 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 1622 | } else { |
b1a45695 | 1623 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
737b758c | 1624 | target_name, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1625 | } |
1626 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
1627 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2; | |
1628 | byte_count += count; | |
1629 | pSMB->DataCount = cpu_to_le16(count); | |
1630 | pSMB->TotalDataCount = pSMB->DataCount; | |
1631 | pSMB->Fid = netfid; | |
1632 | pSMB->InformationLevel = | |
1633 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
1634 | pSMB->Reserved4 = 0; | |
1635 | pSMB->hdr.smb_buf_length += byte_count; | |
1636 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1637 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
1638 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1639 | cifs_stats_inc(&pTcon->num_t2renames); |
1da177e4 LT |
1640 | if (rc) { |
1641 | cFYI(1,("Send error in Rename (by file handle) = %d", rc)); | |
1642 | } | |
a5a2b489 | 1643 | |
1da177e4 LT |
1644 | cifs_buf_release(pSMB); |
1645 | ||
1646 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1647 | since file handle passed in no longer valid */ | |
1648 | ||
1649 | return rc; | |
1650 | } | |
1651 | ||
1652 | int | |
1653 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName, | |
1654 | const __u16 target_tid, const char *toName, const int flags, | |
737b758c | 1655 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1656 | { |
1657 | int rc = 0; | |
1658 | COPY_REQ *pSMB = NULL; | |
1659 | COPY_RSP *pSMBr = NULL; | |
1660 | int bytes_returned; | |
1661 | int name_len, name_len2; | |
1662 | __u16 count; | |
1663 | ||
1664 | cFYI(1, ("In CIFSSMBCopy")); | |
1665 | copyRetry: | |
1666 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
1667 | (void **) &pSMBr); | |
1668 | if (rc) | |
1669 | return rc; | |
1670 | ||
1671 | pSMB->BufferFormat = 0x04; | |
1672 | pSMB->Tid2 = target_tid; | |
1673 | ||
1674 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
1675 | ||
1676 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 1677 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
1678 | fromName, PATH_MAX, nls_codepage, |
1679 | remap); | |
1da177e4 LT |
1680 | name_len++; /* trailing null */ |
1681 | name_len *= 2; | |
1682 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1683 | /* protocol requires ASCII signature byte on Unicode string */ | |
1684 | pSMB->OldFileName[name_len + 1] = 0x00; | |
b1a45695 | 1685 | name_len2 = cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1686 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1687 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1688 | name_len2 *= 2; /* convert to bytes */ | |
1689 | } else { /* BB improve the check for buffer overruns BB */ | |
1690 | name_len = strnlen(fromName, PATH_MAX); | |
1691 | name_len++; /* trailing null */ | |
1692 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1693 | name_len2 = strnlen(toName, PATH_MAX); | |
1694 | name_len2++; /* trailing null */ | |
1695 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1696 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1697 | name_len2++; /* trailing null */ | |
1698 | name_len2++; /* signature byte */ | |
1699 | } | |
1700 | ||
1701 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1702 | pSMB->hdr.smb_buf_length += count; | |
1703 | pSMB->ByteCount = cpu_to_le16(count); | |
1704 | ||
1705 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1706 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1707 | if (rc) { | |
1708 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
1709 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
1710 | } | |
1711 | if (pSMB) | |
1712 | cifs_buf_release(pSMB); | |
1713 | ||
1714 | if (rc == -EAGAIN) | |
1715 | goto copyRetry; | |
1716 | ||
1717 | return rc; | |
1718 | } | |
1719 | ||
1720 | int | |
1721 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
1722 | const char *fromName, const char *toName, | |
1723 | const struct nls_table *nls_codepage) | |
1724 | { | |
1725 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1726 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1727 | char *data_offset; | |
1728 | int name_len; | |
1729 | int name_len_target; | |
1730 | int rc = 0; | |
1731 | int bytes_returned = 0; | |
1732 | __u16 params, param_offset, offset, byte_count; | |
1733 | ||
1734 | cFYI(1, ("In Symlink Unix style")); | |
1735 | createSymLinkRetry: | |
1736 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1737 | (void **) &pSMBr); | |
1738 | if (rc) | |
1739 | return rc; | |
1740 | ||
1741 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1742 | name_len = | |
e89dc920 | 1743 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
1744 | /* find define for this maxpathcomponent */ |
1745 | , nls_codepage); | |
1746 | name_len++; /* trailing null */ | |
1747 | name_len *= 2; | |
1748 | ||
1749 | } else { /* BB improve the check for buffer overruns BB */ | |
1750 | name_len = strnlen(fromName, PATH_MAX); | |
1751 | name_len++; /* trailing null */ | |
1752 | strncpy(pSMB->FileName, fromName, name_len); | |
1753 | } | |
1754 | params = 6 + name_len; | |
1755 | pSMB->MaxSetupCount = 0; | |
1756 | pSMB->Reserved = 0; | |
1757 | pSMB->Flags = 0; | |
1758 | pSMB->Timeout = 0; | |
1759 | pSMB->Reserved2 = 0; | |
1760 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
1761 | InformationLevel) - 4; | |
1762 | offset = param_offset + params; | |
1763 | ||
1764 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1765 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1766 | name_len_target = | |
e89dc920 | 1767 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
1768 | /* find define for this maxpathcomponent */ |
1769 | , nls_codepage); | |
1770 | name_len_target++; /* trailing null */ | |
1771 | name_len_target *= 2; | |
1772 | } else { /* BB improve the check for buffer overruns BB */ | |
1773 | name_len_target = strnlen(toName, PATH_MAX); | |
1774 | name_len_target++; /* trailing null */ | |
1775 | strncpy(data_offset, toName, name_len_target); | |
1776 | } | |
1777 | ||
1778 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1779 | /* BB find exact max on data count below from sess */ | |
1780 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1781 | pSMB->SetupCount = 1; | |
1782 | pSMB->Reserved3 = 0; | |
1783 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1784 | byte_count = 3 /* pad */ + params + name_len_target; | |
1785 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
1786 | pSMB->ParameterCount = cpu_to_le16(params); | |
1787 | pSMB->TotalDataCount = pSMB->DataCount; | |
1788 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1789 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1790 | pSMB->DataOffset = cpu_to_le16(offset); | |
1791 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
1792 | pSMB->Reserved4 = 0; | |
1793 | pSMB->hdr.smb_buf_length += byte_count; | |
1794 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1795 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1796 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1797 | cifs_stats_inc(&tcon->num_symlinks); |
1da177e4 LT |
1798 | if (rc) { |
1799 | cFYI(1, | |
1800 | ("Send error in SetPathInfo (create symlink) = %d", | |
1801 | rc)); | |
1802 | } | |
1803 | ||
1804 | if (pSMB) | |
1805 | cifs_buf_release(pSMB); | |
1806 | ||
1807 | if (rc == -EAGAIN) | |
1808 | goto createSymLinkRetry; | |
1809 | ||
1810 | return rc; | |
1811 | } | |
1812 | ||
1813 | int | |
1814 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
1815 | const char *fromName, const char *toName, | |
737b758c | 1816 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1817 | { |
1818 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1819 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1820 | char *data_offset; | |
1821 | int name_len; | |
1822 | int name_len_target; | |
1823 | int rc = 0; | |
1824 | int bytes_returned = 0; | |
1825 | __u16 params, param_offset, offset, byte_count; | |
1826 | ||
1827 | cFYI(1, ("In Create Hard link Unix style")); | |
1828 | createHardLinkRetry: | |
1829 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1830 | (void **) &pSMBr); | |
1831 | if (rc) | |
1832 | return rc; | |
1833 | ||
1834 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 1835 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 1836 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1837 | name_len++; /* trailing null */ |
1838 | name_len *= 2; | |
1839 | ||
1840 | } else { /* BB improve the check for buffer overruns BB */ | |
1841 | name_len = strnlen(toName, PATH_MAX); | |
1842 | name_len++; /* trailing null */ | |
1843 | strncpy(pSMB->FileName, toName, name_len); | |
1844 | } | |
1845 | params = 6 + name_len; | |
1846 | pSMB->MaxSetupCount = 0; | |
1847 | pSMB->Reserved = 0; | |
1848 | pSMB->Flags = 0; | |
1849 | pSMB->Timeout = 0; | |
1850 | pSMB->Reserved2 = 0; | |
1851 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
1852 | InformationLevel) - 4; | |
1853 | offset = param_offset + params; | |
1854 | ||
1855 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1856 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1857 | name_len_target = | |
b1a45695 | 1858 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 1859 | nls_codepage, remap); |
1da177e4 LT |
1860 | name_len_target++; /* trailing null */ |
1861 | name_len_target *= 2; | |
1862 | } else { /* BB improve the check for buffer overruns BB */ | |
1863 | name_len_target = strnlen(fromName, PATH_MAX); | |
1864 | name_len_target++; /* trailing null */ | |
1865 | strncpy(data_offset, fromName, name_len_target); | |
1866 | } | |
1867 | ||
1868 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1869 | /* BB find exact max on data count below from sess*/ | |
1870 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1871 | pSMB->SetupCount = 1; | |
1872 | pSMB->Reserved3 = 0; | |
1873 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1874 | byte_count = 3 /* pad */ + params + name_len_target; | |
1875 | pSMB->ParameterCount = cpu_to_le16(params); | |
1876 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1877 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
1878 | pSMB->TotalDataCount = pSMB->DataCount; | |
1879 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1880 | pSMB->DataOffset = cpu_to_le16(offset); | |
1881 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
1882 | pSMB->Reserved4 = 0; | |
1883 | pSMB->hdr.smb_buf_length += byte_count; | |
1884 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1885 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1886 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1887 | cifs_stats_inc(&tcon->num_hardlinks); |
1da177e4 LT |
1888 | if (rc) { |
1889 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); | |
1890 | } | |
1891 | ||
1892 | cifs_buf_release(pSMB); | |
1893 | if (rc == -EAGAIN) | |
1894 | goto createHardLinkRetry; | |
1895 | ||
1896 | return rc; | |
1897 | } | |
1898 | ||
1899 | int | |
1900 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
1901 | const char *fromName, const char *toName, | |
737b758c | 1902 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1903 | { |
1904 | int rc = 0; | |
1905 | NT_RENAME_REQ *pSMB = NULL; | |
1906 | RENAME_RSP *pSMBr = NULL; | |
1907 | int bytes_returned; | |
1908 | int name_len, name_len2; | |
1909 | __u16 count; | |
1910 | ||
1911 | cFYI(1, ("In CIFSCreateHardLink")); | |
1912 | winCreateHardLinkRetry: | |
1913 | ||
1914 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
1915 | (void **) &pSMBr); | |
1916 | if (rc) | |
1917 | return rc; | |
1918 | ||
1919 | pSMB->SearchAttributes = | |
1920 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1921 | ATTR_DIRECTORY); | |
1922 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
1923 | pSMB->ClusterCount = 0; | |
1924 | ||
1925 | pSMB->BufferFormat = 0x04; | |
1926 | ||
1927 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1928 | name_len = | |
b1a45695 | 1929 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1930 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1931 | name_len++; /* trailing null */ |
1932 | name_len *= 2; | |
1933 | pSMB->OldFileName[name_len] = 0; /* pad */ | |
1934 | pSMB->OldFileName[name_len + 1] = 0x04; | |
1935 | name_len2 = | |
b1a45695 | 1936 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1937 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1938 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1939 | name_len2 *= 2; /* convert to bytes */ | |
1940 | } else { /* BB improve the check for buffer overruns BB */ | |
1941 | name_len = strnlen(fromName, PATH_MAX); | |
1942 | name_len++; /* trailing null */ | |
1943 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1944 | name_len2 = strnlen(toName, PATH_MAX); | |
1945 | name_len2++; /* trailing null */ | |
1946 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1947 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1948 | name_len2++; /* trailing null */ | |
1949 | name_len2++; /* signature byte */ | |
1950 | } | |
1951 | ||
1952 | count = 1 /* string type byte */ + name_len + name_len2; | |
1953 | pSMB->hdr.smb_buf_length += count; | |
1954 | pSMB->ByteCount = cpu_to_le16(count); | |
1955 | ||
1956 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1957 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1958 | cifs_stats_inc(&tcon->num_hardlinks); |
1da177e4 LT |
1959 | if (rc) { |
1960 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); | |
1961 | } | |
1962 | cifs_buf_release(pSMB); | |
1963 | if (rc == -EAGAIN) | |
1964 | goto winCreateHardLinkRetry; | |
1965 | ||
1966 | return rc; | |
1967 | } | |
1968 | ||
1969 | int | |
1970 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
1971 | const unsigned char *searchName, | |
1972 | char *symlinkinfo, const int buflen, | |
1973 | const struct nls_table *nls_codepage) | |
1974 | { | |
1975 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
1976 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
1977 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
1978 | int rc = 0; | |
1979 | int bytes_returned; | |
1980 | int name_len; | |
1981 | __u16 params, byte_count; | |
1982 | ||
1983 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
1984 | ||
1985 | querySymLinkRetry: | |
1986 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1987 | (void **) &pSMBr); | |
1988 | if (rc) | |
1989 | return rc; | |
1990 | ||
1991 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1992 | name_len = | |
e89dc920 | 1993 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX |
1da177e4 LT |
1994 | /* find define for this maxpathcomponent */ |
1995 | , nls_codepage); | |
1996 | name_len++; /* trailing null */ | |
1997 | name_len *= 2; | |
1998 | } else { /* BB improve the check for buffer overruns BB */ | |
1999 | name_len = strnlen(searchName, PATH_MAX); | |
2000 | name_len++; /* trailing null */ | |
2001 | strncpy(pSMB->FileName, searchName, name_len); | |
2002 | } | |
2003 | ||
2004 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2005 | pSMB->TotalDataCount = 0; | |
2006 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2007 | /* BB find exact max data count below from sess structure BB */ | |
2008 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2009 | pSMB->MaxSetupCount = 0; | |
2010 | pSMB->Reserved = 0; | |
2011 | pSMB->Flags = 0; | |
2012 | pSMB->Timeout = 0; | |
2013 | pSMB->Reserved2 = 0; | |
2014 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2015 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
2016 | pSMB->DataCount = 0; | |
2017 | pSMB->DataOffset = 0; | |
2018 | pSMB->SetupCount = 1; | |
2019 | pSMB->Reserved3 = 0; | |
2020 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2021 | byte_count = params + 1 /* pad */ ; | |
2022 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2023 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2024 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2025 | pSMB->Reserved4 = 0; | |
2026 | pSMB->hdr.smb_buf_length += byte_count; | |
2027 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2028 | ||
2029 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2030 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2031 | if (rc) { | |
2032 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
2033 | } else { | |
2034 | /* decode response */ | |
2035 | ||
2036 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2037 | if (rc || (pSMBr->ByteCount < 2)) | |
2038 | /* BB also check enough total bytes returned */ | |
2039 | rc = -EIO; /* bad smb */ | |
2040 | else { | |
2041 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2042 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2043 | ||
2044 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2045 | name_len = UniStrnlen((wchar_t *) ((char *) | |
2046 | &pSMBr->hdr.Protocol +data_offset), | |
2047 | min_t(const int, buflen,count) / 2); | |
737b758c | 2048 | /* BB FIXME investigate remapping reserved chars here */ |
1da177e4 | 2049 | cifs_strfromUCS_le(symlinkinfo, |
e89dc920 | 2050 | (__le16 *) ((char *)&pSMBr->hdr.Protocol + |
1da177e4 LT |
2051 | data_offset), |
2052 | name_len, nls_codepage); | |
2053 | } else { | |
2054 | strncpy(symlinkinfo, | |
2055 | (char *) &pSMBr->hdr.Protocol + | |
2056 | data_offset, | |
2057 | min_t(const int, buflen, count)); | |
2058 | } | |
2059 | symlinkinfo[buflen] = 0; | |
2060 | /* just in case so calling code does not go off the end of buffer */ | |
2061 | } | |
2062 | } | |
2063 | cifs_buf_release(pSMB); | |
2064 | if (rc == -EAGAIN) | |
2065 | goto querySymLinkRetry; | |
2066 | return rc; | |
2067 | } | |
2068 | ||
0a4b92c0 SF |
2069 | /* Initialize NT TRANSACT SMB into small smb request buffer. |
2070 | This assumes that all NT TRANSACTS that we init here have | |
2071 | total parm and data under about 400 bytes (to fit in small cifs | |
2072 | buffer size), which is the case so far, it easily fits. NB: | |
2073 | Setup words themselves and ByteCount | |
2074 | MaxSetupCount (size of returned setup area) and | |
2075 | MaxParameterCount (returned parms size) must be set by caller */ | |
2076 | static int | |
2077 | smb_init_ntransact(const __u16 sub_command, const int setup_count, | |
2078 | const int parm_len, struct cifsTconInfo *tcon, | |
2079 | void ** ret_buf) | |
2080 | { | |
2081 | int rc; | |
2082 | __u32 temp_offset; | |
2083 | struct smb_com_ntransact_req * pSMB; | |
2084 | ||
2085 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2086 | (void **)&pSMB); | |
2087 | if (rc) | |
2088 | return rc; | |
2089 | *ret_buf = (void *)pSMB; | |
2090 | pSMB->Reserved = 0; | |
2091 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2092 | pSMB->TotalDataCount = 0; | |
2093 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2094 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2095 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2096 | pSMB->DataCount = pSMB->TotalDataCount; | |
2097 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2098 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2099 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2100 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2101 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2102 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2103 | return 0; | |
2104 | } | |
2105 | ||
2106 | static int | |
2107 | validate_ntransact(char * buf, char ** ppparm, char ** ppdata, | |
2108 | int * pdatalen, int * pparmlen) | |
2109 | { | |
2110 | char * end_of_smb; | |
2111 | __u32 data_count, data_offset, parm_count, parm_offset; | |
2112 | struct smb_com_ntransact_rsp * pSMBr; | |
2113 | ||
2114 | if(buf == NULL) | |
2115 | return -EINVAL; | |
2116 | ||
2117 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2118 | ||
2119 | /* ByteCount was converted from little endian in SendReceive */ | |
2120 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + | |
2121 | (char *)&pSMBr->ByteCount; | |
2122 | ||
2123 | ||
2124 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2125 | data_count = le32_to_cpu(pSMBr->DataCount); | |
2126 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
2127 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
2128 | ||
2129 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2130 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2131 | ||
2132 | /* should we also check that parm and data areas do not overlap? */ | |
2133 | if(*ppparm > end_of_smb) { | |
2134 | cFYI(1,("parms start after end of smb")); | |
2135 | return -EINVAL; | |
2136 | } else if(parm_count + *ppparm > end_of_smb) { | |
2137 | cFYI(1,("parm end after end of smb")); | |
2138 | return -EINVAL; | |
2139 | } else if(*ppdata > end_of_smb) { | |
2140 | cFYI(1,("data starts after end of smb")); | |
2141 | return -EINVAL; | |
2142 | } else if(data_count + *ppdata > end_of_smb) { | |
2143 | cFYI(1,("data %p + count %d (%p) ends after end of smb %p start %p", | |
2144 | *ppdata, data_count, (data_count + *ppdata), end_of_smb, pSMBr)); /* BB FIXME */ | |
2145 | return -EINVAL; | |
2146 | } else if(parm_count + data_count > pSMBr->ByteCount) { | |
2147 | cFYI(1,("parm count and data count larger than SMB")); | |
2148 | return -EINVAL; | |
2149 | } | |
2150 | return 0; | |
2151 | } | |
2152 | ||
1da177e4 LT |
2153 | int |
2154 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2155 | const unsigned char *searchName, | |
2156 | char *symlinkinfo, const int buflen,__u16 fid, | |
2157 | const struct nls_table *nls_codepage) | |
2158 | { | |
2159 | int rc = 0; | |
2160 | int bytes_returned; | |
2161 | int name_len; | |
2162 | struct smb_com_transaction_ioctl_req * pSMB; | |
2163 | struct smb_com_transaction_ioctl_rsp * pSMBr; | |
2164 | ||
2165 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
2166 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2167 | (void **) &pSMBr); | |
2168 | if (rc) | |
2169 | return rc; | |
2170 | ||
2171 | pSMB->TotalParameterCount = 0 ; | |
2172 | pSMB->TotalDataCount = 0; | |
2173 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2174 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2175 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2176 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2177 | pSMB->MaxSetupCount = 4; |
2178 | pSMB->Reserved = 0; | |
2179 | pSMB->ParameterOffset = 0; | |
2180 | pSMB->DataCount = 0; | |
2181 | pSMB->DataOffset = 0; | |
2182 | pSMB->SetupCount = 4; | |
2183 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2184 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2185 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2186 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2187 | pSMB->IsRootFlag = 0; | |
2188 | pSMB->Fid = fid; /* file handle always le */ | |
2189 | pSMB->ByteCount = 0; | |
2190 | ||
2191 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2192 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2193 | if (rc) { | |
2194 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
2195 | } else { /* decode response */ | |
2196 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2197 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
2198 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) | |
2199 | /* BB also check enough total bytes returned */ | |
2200 | rc = -EIO; /* bad smb */ | |
2201 | else { | |
2202 | if(data_count && (data_count < 2048)) { | |
0a4b92c0 SF |
2203 | char * end_of_smb = 2 /* sizeof byte count */ + |
2204 | pSMBr->ByteCount + | |
2205 | (char *)&pSMBr->ByteCount; | |
1da177e4 LT |
2206 | |
2207 | struct reparse_data * reparse_buf = (struct reparse_data *) | |
2208 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
2209 | if((char*)reparse_buf >= end_of_smb) { | |
2210 | rc = -EIO; | |
2211 | goto qreparse_out; | |
2212 | } | |
2213 | if((reparse_buf->LinkNamesBuf + | |
2214 | reparse_buf->TargetNameOffset + | |
2215 | reparse_buf->TargetNameLen) > | |
2216 | end_of_smb) { | |
2217 | cFYI(1,("reparse buf extended beyond SMB")); | |
2218 | rc = -EIO; | |
2219 | goto qreparse_out; | |
2220 | } | |
2221 | ||
2222 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2223 | name_len = UniStrnlen((wchar_t *) | |
2224 | (reparse_buf->LinkNamesBuf + | |
2225 | reparse_buf->TargetNameOffset), | |
2226 | min(buflen/2, reparse_buf->TargetNameLen / 2)); | |
2227 | cifs_strfromUCS_le(symlinkinfo, | |
e89dc920 | 2228 | (__le16 *) (reparse_buf->LinkNamesBuf + |
1da177e4 LT |
2229 | reparse_buf->TargetNameOffset), |
2230 | name_len, nls_codepage); | |
2231 | } else { /* ASCII names */ | |
2232 | strncpy(symlinkinfo,reparse_buf->LinkNamesBuf + | |
2233 | reparse_buf->TargetNameOffset, | |
2234 | min_t(const int, buflen, reparse_buf->TargetNameLen)); | |
2235 | } | |
2236 | } else { | |
2237 | rc = -EIO; | |
2238 | cFYI(1,("Invalid return data count on get reparse info ioctl")); | |
2239 | } | |
2240 | symlinkinfo[buflen] = 0; /* just in case so the caller | |
2241 | does not go off the end of the buffer */ | |
2242 | cFYI(1,("readlink result - %s ",symlinkinfo)); | |
2243 | } | |
2244 | } | |
2245 | qreparse_out: | |
4a6d87f1 | 2246 | cifs_buf_release(pSMB); |
1da177e4 LT |
2247 | |
2248 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2249 | since file handle passed in no longer valid */ | |
2250 | ||
2251 | return rc; | |
2252 | } | |
2253 | ||
2254 | #ifdef CONFIG_CIFS_POSIX | |
2255 | ||
2256 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2257 | static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace) | |
2258 | { | |
2259 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2260 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2261 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2262 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
1da177e4 LT |
2263 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ |
2264 | ||
2265 | return; | |
2266 | } | |
2267 | ||
2268 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
737b758c SF |
2269 | static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen, |
2270 | const int acl_type,const int size_of_data_area) | |
1da177e4 LT |
2271 | { |
2272 | int size = 0; | |
2273 | int i; | |
2274 | __u16 count; | |
2275 | struct cifs_posix_ace * pACE; | |
2276 | struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src; | |
2277 | posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt; | |
2278 | ||
2279 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2280 | return -EOPNOTSUPP; | |
2281 | ||
2282 | if(acl_type & ACL_TYPE_ACCESS) { | |
2283 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2284 | pACE = &cifs_acl->ace_array[0]; | |
2285 | size = sizeof(struct cifs_posix_acl); | |
2286 | size += sizeof(struct cifs_posix_ace) * count; | |
2287 | /* check if we would go beyond end of SMB */ | |
2288 | if(size_of_data_area < size) { | |
2289 | cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size)); | |
2290 | return -EINVAL; | |
2291 | } | |
2292 | } else if(acl_type & ACL_TYPE_DEFAULT) { | |
2293 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2294 | size = sizeof(struct cifs_posix_acl); | |
2295 | size += sizeof(struct cifs_posix_ace) * count; | |
2296 | /* skip past access ACEs to get to default ACEs */ | |
2297 | pACE = &cifs_acl->ace_array[count]; | |
2298 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2299 | size += sizeof(struct cifs_posix_ace) * count; | |
2300 | /* check if we would go beyond end of SMB */ | |
2301 | if(size_of_data_area < size) | |
2302 | return -EINVAL; | |
2303 | } else { | |
2304 | /* illegal type */ | |
2305 | return -EINVAL; | |
2306 | } | |
2307 | ||
2308 | size = posix_acl_xattr_size(count); | |
2309 | if((buflen == 0) || (local_acl == NULL)) { | |
2310 | /* used to query ACL EA size */ | |
2311 | } else if(size > buflen) { | |
2312 | return -ERANGE; | |
2313 | } else /* buffer big enough */ { | |
ff7feac9 | 2314 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
1da177e4 LT |
2315 | for(i = 0;i < count ;i++) { |
2316 | cifs_convert_ace(&local_acl->a_entries[i],pACE); | |
2317 | pACE ++; | |
2318 | } | |
2319 | } | |
2320 | return size; | |
2321 | } | |
2322 | ||
2323 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace, | |
2324 | const posix_acl_xattr_entry * local_ace) | |
2325 | { | |
2326 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2327 | ||
ff7feac9 SF |
2328 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2329 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2330 | /* BB is there a better way to handle the large uid? */ |
ff7feac9 | 2331 | if(local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2332 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2333 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
2334 | } else | |
ff7feac9 | 2335 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
1da177e4 LT |
2336 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ |
2337 | return rc; | |
2338 | } | |
2339 | ||
2340 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
2341 | static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen, | |
2342 | const int acl_type) | |
2343 | { | |
2344 | __u16 rc = 0; | |
2345 | struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data; | |
2346 | posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL; | |
2347 | int count; | |
2348 | int i; | |
2349 | ||
2350 | if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) | |
2351 | return 0; | |
2352 | ||
2353 | count = posix_acl_xattr_count((size_t)buflen); | |
2354 | cFYI(1,("setting acl with %d entries from buf of length %d and version of %d", | |
ff7feac9 SF |
2355 | count, buflen, le32_to_cpu(local_acl->a_version))); |
2356 | if(le32_to_cpu(local_acl->a_version) != 2) { | |
2357 | cFYI(1,("unknown POSIX ACL version %d", | |
2358 | le32_to_cpu(local_acl->a_version))); | |
1da177e4 LT |
2359 | return 0; |
2360 | } | |
2361 | cifs_acl->version = cpu_to_le16(1); | |
2362 | if(acl_type == ACL_TYPE_ACCESS) | |
ff7feac9 | 2363 | cifs_acl->access_entry_count = cpu_to_le16(count); |
1da177e4 | 2364 | else if(acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2365 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 LT |
2366 | else { |
2367 | cFYI(1,("unknown ACL type %d",acl_type)); | |
2368 | return 0; | |
2369 | } | |
2370 | for(i=0;i<count;i++) { | |
2371 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], | |
2372 | &local_acl->a_entries[i]); | |
2373 | if(rc != 0) { | |
2374 | /* ACE not converted */ | |
2375 | break; | |
2376 | } | |
2377 | } | |
2378 | if(rc == 0) { | |
2379 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); | |
2380 | rc += sizeof(struct cifs_posix_acl); | |
2381 | /* BB add check to make sure ACL does not overflow SMB */ | |
2382 | } | |
2383 | return rc; | |
2384 | } | |
2385 | ||
2386 | int | |
2387 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
2388 | const unsigned char *searchName, | |
2389 | char *acl_inf, const int buflen, const int acl_type, | |
737b758c | 2390 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2391 | { |
2392 | /* SMB_QUERY_POSIX_ACL */ | |
2393 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2394 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2395 | int rc = 0; | |
2396 | int bytes_returned; | |
2397 | int name_len; | |
2398 | __u16 params, byte_count; | |
2399 | ||
2400 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); | |
2401 | ||
2402 | queryAclRetry: | |
2403 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2404 | (void **) &pSMBr); | |
2405 | if (rc) | |
2406 | return rc; | |
2407 | ||
2408 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2409 | name_len = | |
b1a45695 | 2410 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2411 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2412 | name_len++; /* trailing null */ |
2413 | name_len *= 2; | |
2414 | pSMB->FileName[name_len] = 0; | |
2415 | pSMB->FileName[name_len+1] = 0; | |
2416 | } else { /* BB improve the check for buffer overruns BB */ | |
2417 | name_len = strnlen(searchName, PATH_MAX); | |
2418 | name_len++; /* trailing null */ | |
2419 | strncpy(pSMB->FileName, searchName, name_len); | |
2420 | } | |
2421 | ||
2422 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2423 | pSMB->TotalDataCount = 0; | |
2424 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2425 | /* BB find exact max data count below from sess structure BB */ | |
2426 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2427 | pSMB->MaxSetupCount = 0; | |
2428 | pSMB->Reserved = 0; | |
2429 | pSMB->Flags = 0; | |
2430 | pSMB->Timeout = 0; | |
2431 | pSMB->Reserved2 = 0; | |
2432 | pSMB->ParameterOffset = cpu_to_le16( | |
2433 | offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
2434 | pSMB->DataCount = 0; | |
2435 | pSMB->DataOffset = 0; | |
2436 | pSMB->SetupCount = 1; | |
2437 | pSMB->Reserved3 = 0; | |
2438 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2439 | byte_count = params + 1 /* pad */ ; | |
2440 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2441 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2442 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2443 | pSMB->Reserved4 = 0; | |
2444 | pSMB->hdr.smb_buf_length += byte_count; | |
2445 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2446 | ||
2447 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2448 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2449 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 LT |
2450 | if (rc) { |
2451 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
2452 | } else { | |
2453 | /* decode response */ | |
2454 | ||
2455 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2456 | if (rc || (pSMBr->ByteCount < 2)) | |
2457 | /* BB also check enough total bytes returned */ | |
2458 | rc = -EIO; /* bad smb */ | |
2459 | else { | |
2460 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2461 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2462 | rc = cifs_copy_posix_acl(acl_inf, | |
2463 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
2464 | buflen,acl_type,count); | |
2465 | } | |
2466 | } | |
2467 | cifs_buf_release(pSMB); | |
2468 | if (rc == -EAGAIN) | |
2469 | goto queryAclRetry; | |
2470 | return rc; | |
2471 | } | |
2472 | ||
2473 | int | |
2474 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
2475 | const unsigned char *fileName, | |
737b758c SF |
2476 | const char *local_acl, const int buflen, |
2477 | const int acl_type, | |
2478 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2479 | { |
2480 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2481 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2482 | char *parm_data; | |
2483 | int name_len; | |
2484 | int rc = 0; | |
2485 | int bytes_returned = 0; | |
2486 | __u16 params, byte_count, data_count, param_offset, offset; | |
2487 | ||
2488 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2489 | setAclRetry: | |
2490 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2491 | (void **) &pSMBr); | |
2492 | if (rc) | |
2493 | return rc; | |
2494 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2495 | name_len = | |
b1a45695 | 2496 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2497 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2498 | name_len++; /* trailing null */ |
2499 | name_len *= 2; | |
2500 | } else { /* BB improve the check for buffer overruns BB */ | |
2501 | name_len = strnlen(fileName, PATH_MAX); | |
2502 | name_len++; /* trailing null */ | |
2503 | strncpy(pSMB->FileName, fileName, name_len); | |
2504 | } | |
2505 | params = 6 + name_len; | |
2506 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2507 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
2508 | pSMB->MaxSetupCount = 0; | |
2509 | pSMB->Reserved = 0; | |
2510 | pSMB->Flags = 0; | |
2511 | pSMB->Timeout = 0; | |
2512 | pSMB->Reserved2 = 0; | |
2513 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
2514 | InformationLevel) - 4; | |
2515 | offset = param_offset + params; | |
2516 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2517 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2518 | ||
2519 | /* convert to on the wire format for POSIX ACL */ | |
2520 | data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type); | |
2521 | ||
2522 | if(data_count == 0) { | |
2523 | rc = -EOPNOTSUPP; | |
2524 | goto setACLerrorExit; | |
2525 | } | |
2526 | pSMB->DataOffset = cpu_to_le16(offset); | |
2527 | pSMB->SetupCount = 1; | |
2528 | pSMB->Reserved3 = 0; | |
2529 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2530 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2531 | byte_count = 3 /* pad */ + params + data_count; | |
2532 | pSMB->DataCount = cpu_to_le16(data_count); | |
2533 | pSMB->TotalDataCount = pSMB->DataCount; | |
2534 | pSMB->ParameterCount = cpu_to_le16(params); | |
2535 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2536 | pSMB->Reserved4 = 0; | |
2537 | pSMB->hdr.smb_buf_length += byte_count; | |
2538 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2539 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2540 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2541 | if (rc) { | |
2542 | cFYI(1, ("Set POSIX ACL returned %d", rc)); | |
2543 | } | |
2544 | ||
2545 | setACLerrorExit: | |
2546 | cifs_buf_release(pSMB); | |
2547 | if (rc == -EAGAIN) | |
2548 | goto setAclRetry; | |
2549 | return rc; | |
2550 | } | |
2551 | ||
f654bac2 SF |
2552 | /* BB fix tabs in this function FIXME BB */ |
2553 | int | |
2554 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
2555 | const int netfid, __u64 * pExtAttrBits, __u64 *pMask) | |
2556 | { | |
2557 | int rc = 0; | |
2558 | struct smb_t2_qfi_req *pSMB = NULL; | |
2559 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2560 | int bytes_returned; | |
2561 | __u16 params, byte_count; | |
2562 | ||
2563 | cFYI(1,("In GetExtAttr")); | |
2564 | if(tcon == NULL) | |
2565 | return -ENODEV; | |
2566 | ||
2567 | GetExtAttrRetry: | |
2568 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2569 | (void **) &pSMBr); | |
2570 | if (rc) | |
2571 | return rc; | |
2572 | ||
c67593a0 | 2573 | params = 2 /* level */ +2 /* fid */; |
f654bac2 | 2574 | pSMB->t2.TotalDataCount = 0; |
c67593a0 | 2575 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); |
f654bac2 SF |
2576 | /* BB find exact max data count below from sess structure BB */ |
2577 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2578 | pSMB->t2.MaxSetupCount = 0; | |
2579 | pSMB->t2.Reserved = 0; | |
2580 | pSMB->t2.Flags = 0; | |
2581 | pSMB->t2.Timeout = 0; | |
2582 | pSMB->t2.Reserved2 = 0; | |
c67593a0 SF |
2583 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, |
2584 | Fid) - 4); | |
f654bac2 SF |
2585 | pSMB->t2.DataCount = 0; |
2586 | pSMB->t2.DataOffset = 0; | |
2587 | pSMB->t2.SetupCount = 1; | |
2588 | pSMB->t2.Reserved3 = 0; | |
2589 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
c67593a0 | 2590 | byte_count = params + 1 /* pad */ ; |
f654bac2 SF |
2591 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); |
2592 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
2593 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
c67593a0 | 2594 | pSMB->Pad = 0; |
f654bac2 SF |
2595 | pSMB->Fid = netfid; |
2596 | pSMB->hdr.smb_buf_length += byte_count; | |
2597 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
2598 | ||
2599 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2600 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2601 | if (rc) { | |
2602 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
2603 | } else { | |
2604 | /* decode response */ | |
2605 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2606 | if (rc || (pSMBr->ByteCount < 2)) | |
2607 | /* BB also check enough total bytes returned */ | |
2608 | /* If rc should we check for EOPNOSUPP and | |
2609 | disable the srvino flag? or in caller? */ | |
2610 | rc = -EIO; /* bad smb */ | |
2611 | else { | |
2612 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2613 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2614 | struct file_chattr_info * pfinfo; | |
2615 | /* BB Do we need a cast or hash here ? */ | |
2616 | if(count != 16) { | |
2617 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
2618 | rc = -EIO; | |
2619 | goto GetExtAttrOut; | |
2620 | } | |
2621 | pfinfo = (struct file_chattr_info *) | |
2622 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
2623 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
2624 | *pMask = le64_to_cpu(pfinfo->mask); | |
2625 | } | |
2626 | } | |
2627 | GetExtAttrOut: | |
2628 | cifs_buf_release(pSMB); | |
2629 | if (rc == -EAGAIN) | |
2630 | goto GetExtAttrRetry; | |
2631 | return rc; | |
2632 | } | |
2633 | ||
2634 | ||
2635 | #endif /* CONFIG_POSIX */ | |
1da177e4 | 2636 | |
eeac8047 SF |
2637 | |
2638 | /* security id for everyone */ | |
2639 | const struct cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}}; | |
2640 | /* group users */ | |
2641 | const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}}; | |
2642 | ||
0a4b92c0 | 2643 | /* Convert CIFS ACL to POSIX form */ |
eeac8047 | 2644 | static int parse_sec_desc(struct cifs_sid * psec_desc, int acl_len) |
0a4b92c0 | 2645 | { |
0a4b92c0 SF |
2646 | return 0; |
2647 | } | |
2648 | ||
2649 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ | |
2650 | int | |
2651 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
2652 | /* BB fix up return info */ char *acl_inf, const int buflen, | |
2653 | const int acl_type /* ACCESS/DEFAULT not sure implication */) | |
2654 | { | |
2655 | int rc = 0; | |
2656 | int buf_type = 0; | |
2657 | QUERY_SEC_DESC_REQ * pSMB; | |
2658 | struct kvec iov[1]; | |
2659 | ||
2660 | cFYI(1, ("GetCifsACL")); | |
2661 | ||
2662 | rc = smb_init_ntransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, | |
2663 | 8 /* parm len */, tcon, (void **) &pSMB); | |
2664 | if (rc) | |
2665 | return rc; | |
2666 | ||
2667 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
2668 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
2669 | pSMB->MaxSetupCount = 0; | |
2670 | pSMB->Fid = fid; /* file handle always le */ | |
2671 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
2672 | CIFS_ACL_DACL); | |
2673 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
2674 | pSMB->hdr.smb_buf_length += 11; | |
2675 | iov[0].iov_base = (char *)pSMB; | |
2676 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
2677 | ||
2678 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, 0); | |
2679 | cifs_stats_inc(&tcon->num_acl_get); | |
2680 | if (rc) { | |
2681 | cFYI(1, ("Send error in QuerySecDesc = %d", rc)); | |
2682 | } else { /* decode response */ | |
d41f084a | 2683 | struct cifs_sid * psec_desc; |
0a4b92c0 SF |
2684 | __le32 * parm; |
2685 | int parm_len; | |
2686 | int data_len; | |
2687 | int acl_len; | |
2688 | struct smb_com_ntransact_rsp * pSMBr; | |
2689 | ||
2690 | /* validate_nttransact */ | |
2691 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, | |
2692 | (char **)&psec_desc, | |
2693 | &parm_len, &data_len); | |
2694 | ||
2695 | if(rc) | |
2696 | goto qsec_out; | |
2697 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
2698 | ||
2699 | cERROR(1,("smb %p parm %p data %p",pSMBr,parm,psec_desc)); /* BB removeme BB */ | |
2700 | ||
2701 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
2702 | rc = -EIO; /* bad smb */ | |
2703 | goto qsec_out; | |
2704 | } | |
2705 | ||
2706 | /* BB check that data area is minimum length and as big as acl_len */ | |
2707 | ||
2708 | acl_len = le32_to_cpu(*(__le32 *)parm); | |
2709 | /* BB check if(acl_len > bufsize) */ | |
2710 | ||
2711 | parse_sec_desc(psec_desc, acl_len); | |
2712 | } | |
2713 | qsec_out: | |
2714 | if(buf_type == CIFS_SMALL_BUFFER) | |
2715 | cifs_small_buf_release(iov[0].iov_base); | |
2716 | else if(buf_type == CIFS_LARGE_BUFFER) | |
2717 | cifs_buf_release(iov[0].iov_base); | |
4b8f930f | 2718 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
2719 | return rc; |
2720 | } | |
2721 | ||
2722 | ||
6b8edfe0 SF |
2723 | /* Legacy Query Path Information call for lookup to old servers such |
2724 | as Win9x/WinME */ | |
2725 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
2726 | const unsigned char *searchName, | |
2727 | FILE_ALL_INFO * pFinfo, | |
2728 | const struct nls_table *nls_codepage, int remap) | |
2729 | { | |
2730 | QUERY_INFORMATION_REQ * pSMB; | |
2731 | QUERY_INFORMATION_RSP * pSMBr; | |
2732 | int rc = 0; | |
2733 | int bytes_returned; | |
2734 | int name_len; | |
2735 | ||
2736 | cFYI(1, ("In SMBQPath path %s", searchName)); | |
2737 | QInfRetry: | |
2738 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
2739 | (void **) &pSMBr); | |
2740 | if (rc) | |
2741 | return rc; | |
2742 | ||
2743 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2744 | name_len = | |
2745 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
2746 | PATH_MAX, nls_codepage, remap); | |
2747 | name_len++; /* trailing null */ | |
2748 | name_len *= 2; | |
2749 | } else { | |
2750 | name_len = strnlen(searchName, PATH_MAX); | |
2751 | name_len++; /* trailing null */ | |
2752 | strncpy(pSMB->FileName, searchName, name_len); | |
2753 | } | |
2754 | pSMB->BufferFormat = 0x04; | |
2755 | name_len++; /* account for buffer type byte */ | |
2756 | pSMB->hdr.smb_buf_length += (__u16) name_len; | |
2757 | pSMB->ByteCount = cpu_to_le16(name_len); | |
2758 | ||
2759 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2760 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2761 | if (rc) { | |
2762 | cFYI(1, ("Send error in QueryInfo = %d", rc)); | |
2763 | } else if (pFinfo) { /* decode response */ | |
2764 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); | |
70ca734a SF |
2765 | pFinfo->AllocationSize = |
2766 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
2767 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
2768 | pFinfo->Attributes = | |
2769 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
2770 | } else |
2771 | rc = -EIO; /* bad buffer passed in */ | |
2772 | ||
2773 | cifs_buf_release(pSMB); | |
2774 | ||
2775 | if (rc == -EAGAIN) | |
2776 | goto QInfRetry; | |
2777 | ||
2778 | return rc; | |
2779 | } | |
2780 | ||
2781 | ||
2782 | ||
2783 | ||
1da177e4 LT |
2784 | int |
2785 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
2786 | const unsigned char *searchName, | |
2787 | FILE_ALL_INFO * pFindData, | |
737b758c | 2788 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2789 | { |
2790 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
2791 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2792 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2793 | int rc = 0; | |
2794 | int bytes_returned; | |
2795 | int name_len; | |
2796 | __u16 params, byte_count; | |
2797 | ||
2798 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
2799 | QPathInfoRetry: | |
2800 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2801 | (void **) &pSMBr); | |
2802 | if (rc) | |
2803 | return rc; | |
2804 | ||
2805 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2806 | name_len = | |
b1a45695 | 2807 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2808 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2809 | name_len++; /* trailing null */ |
2810 | name_len *= 2; | |
2811 | } else { /* BB improve the check for buffer overruns BB */ | |
2812 | name_len = strnlen(searchName, PATH_MAX); | |
2813 | name_len++; /* trailing null */ | |
2814 | strncpy(pSMB->FileName, searchName, name_len); | |
2815 | } | |
2816 | ||
2817 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
2818 | pSMB->TotalDataCount = 0; | |
2819 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2820 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
2821 | pSMB->MaxSetupCount = 0; | |
2822 | pSMB->Reserved = 0; | |
2823 | pSMB->Flags = 0; | |
2824 | pSMB->Timeout = 0; | |
2825 | pSMB->Reserved2 = 0; | |
2826 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2827 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
2828 | pSMB->DataCount = 0; | |
2829 | pSMB->DataOffset = 0; | |
2830 | pSMB->SetupCount = 1; | |
2831 | pSMB->Reserved3 = 0; | |
2832 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2833 | byte_count = params + 1 /* pad */ ; | |
2834 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2835 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2836 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
2837 | pSMB->Reserved4 = 0; | |
2838 | pSMB->hdr.smb_buf_length += byte_count; | |
2839 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2840 | ||
2841 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2842 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2843 | if (rc) { | |
2844 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
2845 | } else { /* decode response */ | |
2846 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2847 | ||
2848 | if (rc || (pSMBr->ByteCount < 40)) | |
2849 | rc = -EIO; /* bad smb */ | |
2850 | else if (pFindData){ | |
2851 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2852 | memcpy((char *) pFindData, | |
2853 | (char *) &pSMBr->hdr.Protocol + | |
2854 | data_offset, sizeof (FILE_ALL_INFO)); | |
2855 | } else | |
2856 | rc = -ENOMEM; | |
2857 | } | |
2858 | cifs_buf_release(pSMB); | |
2859 | if (rc == -EAGAIN) | |
2860 | goto QPathInfoRetry; | |
2861 | ||
2862 | return rc; | |
2863 | } | |
2864 | ||
2865 | int | |
2866 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
2867 | const unsigned char *searchName, | |
2868 | FILE_UNIX_BASIC_INFO * pFindData, | |
737b758c | 2869 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2870 | { |
2871 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
2872 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2873 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2874 | int rc = 0; | |
2875 | int bytes_returned = 0; | |
2876 | int name_len; | |
2877 | __u16 params, byte_count; | |
2878 | ||
2879 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
2880 | UnixQPathInfoRetry: | |
2881 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2882 | (void **) &pSMBr); | |
2883 | if (rc) | |
2884 | return rc; | |
2885 | ||
2886 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2887 | name_len = | |
b1a45695 | 2888 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2889 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2890 | name_len++; /* trailing null */ |
2891 | name_len *= 2; | |
2892 | } else { /* BB improve the check for buffer overruns BB */ | |
2893 | name_len = strnlen(searchName, PATH_MAX); | |
2894 | name_len++; /* trailing null */ | |
2895 | strncpy(pSMB->FileName, searchName, name_len); | |
2896 | } | |
2897 | ||
2898 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
2899 | pSMB->TotalDataCount = 0; | |
2900 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2901 | /* BB find exact max SMB PDU from sess structure BB */ | |
2902 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2903 | pSMB->MaxSetupCount = 0; | |
2904 | pSMB->Reserved = 0; | |
2905 | pSMB->Flags = 0; | |
2906 | pSMB->Timeout = 0; | |
2907 | pSMB->Reserved2 = 0; | |
2908 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2909 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
2910 | pSMB->DataCount = 0; | |
2911 | pSMB->DataOffset = 0; | |
2912 | pSMB->SetupCount = 1; | |
2913 | pSMB->Reserved3 = 0; | |
2914 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2915 | byte_count = params + 1 /* pad */ ; | |
2916 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2917 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2918 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
2919 | pSMB->Reserved4 = 0; | |
2920 | pSMB->hdr.smb_buf_length += byte_count; | |
2921 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2922 | ||
2923 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2924 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2925 | if (rc) { | |
2926 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
2927 | } else { /* decode response */ | |
2928 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2929 | ||
2930 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
2931 | rc = -EIO; /* bad smb */ | |
2932 | } else { | |
2933 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2934 | memcpy((char *) pFindData, | |
2935 | (char *) &pSMBr->hdr.Protocol + | |
2936 | data_offset, | |
2937 | sizeof (FILE_UNIX_BASIC_INFO)); | |
2938 | } | |
2939 | } | |
2940 | cifs_buf_release(pSMB); | |
2941 | if (rc == -EAGAIN) | |
2942 | goto UnixQPathInfoRetry; | |
2943 | ||
2944 | return rc; | |
2945 | } | |
2946 | ||
2947 | #if 0 /* function unused at present */ | |
2948 | int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon, | |
2949 | const char *searchName, FILE_ALL_INFO * findData, | |
2950 | const struct nls_table *nls_codepage) | |
2951 | { | |
2952 | /* level 257 SMB_ */ | |
2953 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
2954 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
2955 | int rc = 0; | |
2956 | int bytes_returned; | |
2957 | int name_len; | |
2958 | __u16 params, byte_count; | |
2959 | ||
2960 | cFYI(1, ("In FindUnique")); | |
2961 | findUniqueRetry: | |
2962 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2963 | (void **) &pSMBr); | |
2964 | if (rc) | |
2965 | return rc; | |
2966 | ||
2967 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2968 | name_len = | |
b1a45695 | 2969 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX |
1da177e4 LT |
2970 | /* find define for this maxpathcomponent */ |
2971 | , nls_codepage); | |
2972 | name_len++; /* trailing null */ | |
2973 | name_len *= 2; | |
2974 | } else { /* BB improve the check for buffer overruns BB */ | |
2975 | name_len = strnlen(searchName, PATH_MAX); | |
2976 | name_len++; /* trailing null */ | |
2977 | strncpy(pSMB->FileName, searchName, name_len); | |
2978 | } | |
2979 | ||
2980 | params = 12 + name_len /* includes null */ ; | |
2981 | pSMB->TotalDataCount = 0; /* no EAs */ | |
2982 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2983 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
2984 | pSMB->MaxSetupCount = 0; | |
2985 | pSMB->Reserved = 0; | |
2986 | pSMB->Flags = 0; | |
2987 | pSMB->Timeout = 0; | |
2988 | pSMB->Reserved2 = 0; | |
2989 | pSMB->ParameterOffset = cpu_to_le16( | |
2990 | offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4); | |
2991 | pSMB->DataCount = 0; | |
2992 | pSMB->DataOffset = 0; | |
2993 | pSMB->SetupCount = 1; /* one byte, no need to le convert */ | |
2994 | pSMB->Reserved3 = 0; | |
2995 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
2996 | byte_count = params + 1 /* pad */ ; | |
2997 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2998 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2999 | pSMB->SearchAttributes = | |
3000 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3001 | ATTR_DIRECTORY); | |
3002 | pSMB->SearchCount = cpu_to_le16(16); /* BB increase */ | |
3003 | pSMB->SearchFlags = cpu_to_le16(1); | |
3004 | pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); | |
3005 | pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */ | |
3006 | pSMB->hdr.smb_buf_length += byte_count; | |
3007 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3008 | ||
3009 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3010 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3011 | ||
3012 | if (rc) { | |
3013 | cFYI(1, ("Send error in FindFileDirInfo = %d", rc)); | |
3014 | } else { /* decode response */ | |
a4544347 | 3015 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 LT |
3016 | /* BB fill in */ |
3017 | } | |
3018 | ||
3019 | cifs_buf_release(pSMB); | |
3020 | if (rc == -EAGAIN) | |
3021 | goto findUniqueRetry; | |
3022 | ||
3023 | return rc; | |
3024 | } | |
3025 | #endif /* end unused (temporarily) function */ | |
3026 | ||
3027 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ | |
3028 | int | |
3029 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
3030 | const char *searchName, | |
3031 | const struct nls_table *nls_codepage, | |
3032 | __u16 * pnetfid, | |
ac67055e | 3033 | struct cifs_search_info * psrch_inf, int remap, const char dirsep) |
1da177e4 LT |
3034 | { |
3035 | /* level 257 SMB_ */ | |
3036 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3037 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
3038 | T2_FFIRST_RSP_PARMS * parms; | |
3039 | int rc = 0; | |
3040 | int bytes_returned = 0; | |
3041 | int name_len; | |
3042 | __u16 params, byte_count; | |
3043 | ||
737b758c | 3044 | cFYI(1, ("In FindFirst for %s",searchName)); |
1da177e4 LT |
3045 | |
3046 | findFirstRetry: | |
3047 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3048 | (void **) &pSMBr); | |
3049 | if (rc) | |
3050 | return rc; | |
3051 | ||
3052 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3053 | name_len = | |
b1a45695 | 3054 | cifsConvertToUCS((__le16 *) pSMB->FileName,searchName, |
737b758c SF |
3055 | PATH_MAX, nls_codepage, remap); |
3056 | /* We can not add the asterik earlier in case | |
3057 | it got remapped to 0xF03A as if it were part of the | |
3058 | directory name instead of a wildcard */ | |
1da177e4 | 3059 | name_len *= 2; |
ac67055e | 3060 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3061 | pSMB->FileName[name_len+1] = 0; |
3062 | pSMB->FileName[name_len+2] = '*'; | |
3063 | pSMB->FileName[name_len+3] = 0; | |
3064 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3065 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3066 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3067 | name_len += 2; |
1da177e4 LT |
3068 | } else { /* BB add check for overrun of SMB buf BB */ |
3069 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 LT |
3070 | /* BB fix here and in unicode clause above ie |
3071 | if(name_len > buffersize-header) | |
3072 | free buffer exit; BB */ | |
3073 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3074 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3075 | pSMB->FileName[name_len+1] = '*'; |
3076 | pSMB->FileName[name_len+2] = 0; | |
3077 | name_len += 3; | |
1da177e4 LT |
3078 | } |
3079 | ||
3080 | params = 12 + name_len /* includes null */ ; | |
3081 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3082 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3083 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3084 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3085 | pSMB->MaxSetupCount = 0; | |
3086 | pSMB->Reserved = 0; | |
3087 | pSMB->Flags = 0; | |
3088 | pSMB->Timeout = 0; | |
3089 | pSMB->Reserved2 = 0; | |
3090 | byte_count = params + 1 /* pad */ ; | |
3091 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3092 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3093 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3094 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3095 | - 4); | |
1da177e4 LT |
3096 | pSMB->DataCount = 0; |
3097 | pSMB->DataOffset = 0; | |
3098 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3099 | pSMB->Reserved3 = 0; | |
3100 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3101 | pSMB->SearchAttributes = | |
3102 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3103 | ATTR_DIRECTORY); | |
3104 | pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); | |
3105 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
3106 | CIFS_SEARCH_RETURN_RESUME); | |
3107 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3108 | ||
3109 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3110 | pSMB->SearchStorageType = 0; | |
3111 | pSMB->hdr.smb_buf_length += byte_count; | |
3112 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3113 | ||
3114 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3115 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3116 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3117 | |
88274815 SF |
3118 | if (rc) {/* BB add logic to retry regular search if Unix search |
3119 | rejected unexpectedly by server */ | |
1da177e4 LT |
3120 | /* BB Add code to handle unsupported level rc */ |
3121 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
1982c344 | 3122 | |
88274815 | 3123 | cifs_buf_release(pSMB); |
1da177e4 LT |
3124 | |
3125 | /* BB eventually could optimize out free and realloc of buf */ | |
3126 | /* for this case */ | |
3127 | if (rc == -EAGAIN) | |
3128 | goto findFirstRetry; | |
3129 | } else { /* decode response */ | |
3130 | /* BB remember to free buffer if error BB */ | |
3131 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3132 | if(rc == 0) { | |
3133 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
3134 | psrch_inf->unicode = TRUE; | |
3135 | else | |
3136 | psrch_inf->unicode = FALSE; | |
3137 | ||
3138 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3139 | psrch_inf->smallBuf = 0; |
1da177e4 LT |
3140 | psrch_inf->srch_entries_start = |
3141 | (char *) &pSMBr->hdr.Protocol + | |
3142 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
3143 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3144 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3145 | ||
3146 | if(parms->EndofSearch) | |
3147 | psrch_inf->endOfSearch = TRUE; | |
3148 | else | |
3149 | psrch_inf->endOfSearch = FALSE; | |
3150 | ||
3151 | psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); | |
60808233 | 3152 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3153 | psrch_inf->entries_in_buffer; |
1da177e4 LT |
3154 | *pnetfid = parms->SearchHandle; |
3155 | } else { | |
3156 | cifs_buf_release(pSMB); | |
3157 | } | |
3158 | } | |
3159 | ||
3160 | return rc; | |
3161 | } | |
3162 | ||
3163 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
3164 | __u16 searchHandle, struct cifs_search_info * psrch_inf) | |
3165 | { | |
3166 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3167 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
3168 | T2_FNEXT_RSP_PARMS * parms; | |
3169 | char *response_data; | |
3170 | int rc = 0; | |
3171 | int bytes_returned, name_len; | |
3172 | __u16 params, byte_count; | |
3173 | ||
3174 | cFYI(1, ("In FindNext")); | |
3175 | ||
3176 | if(psrch_inf->endOfSearch == TRUE) | |
3177 | return -ENOENT; | |
3178 | ||
3179 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3180 | (void **) &pSMBr); | |
3181 | if (rc) | |
3182 | return rc; | |
3183 | ||
3184 | params = 14; /* includes 2 bytes of null string, converted to LE below */ | |
3185 | byte_count = 0; | |
3186 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3187 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3188 | pSMB->MaxDataCount = | |
3189 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3190 | pSMB->MaxSetupCount = 0; | |
3191 | pSMB->Reserved = 0; | |
3192 | pSMB->Flags = 0; | |
3193 | pSMB->Timeout = 0; | |
3194 | pSMB->Reserved2 = 0; | |
3195 | pSMB->ParameterOffset = cpu_to_le16( | |
3196 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3197 | pSMB->DataCount = 0; | |
3198 | pSMB->DataOffset = 0; | |
3199 | pSMB->SetupCount = 1; | |
3200 | pSMB->Reserved3 = 0; | |
3201 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3202 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3203 | pSMB->SearchCount = | |
3204 | cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO)); | |
3205 | /* test for Unix extensions */ | |
3206 | /* if (tcon->ses->capabilities & CAP_UNIX) { | |
3207 | pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX); | |
3208 | psrch_inf->info_level = SMB_FIND_FILE_UNIX; | |
3209 | } else { | |
3210 | pSMB->InformationLevel = | |
3211 | cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); | |
3212 | psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO; | |
3213 | } */ | |
3214 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3215 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3216 | pSMB->SearchFlags = | |
3217 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3218 | ||
3219 | name_len = psrch_inf->resume_name_len; | |
3220 | params += name_len; | |
3221 | if(name_len < PATH_MAX) { | |
3222 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); | |
3223 | byte_count += name_len; | |
ef6724e3 SF |
3224 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3225 | pSMB->ResumeFileName[name_len] = 0; | |
3226 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3227 | } else { |
3228 | rc = -EINVAL; | |
3229 | goto FNext2_err_exit; | |
3230 | } | |
3231 | byte_count = params + 1 /* pad */ ; | |
3232 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3233 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3234 | pSMB->hdr.smb_buf_length += byte_count; | |
3235 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3236 | ||
3237 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3238 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3239 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3240 | if (rc) { |
3241 | if (rc == -EBADF) { | |
3242 | psrch_inf->endOfSearch = TRUE; | |
3243 | rc = 0; /* search probably was closed at end of search above */ | |
3244 | } else | |
3245 | cFYI(1, ("FindNext returned = %d", rc)); | |
3246 | } else { /* decode response */ | |
3247 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3248 | ||
3249 | if(rc == 0) { | |
3250 | /* BB fixme add lock for file (srch_info) struct here */ | |
3251 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
3252 | psrch_inf->unicode = TRUE; | |
3253 | else | |
3254 | psrch_inf->unicode = FALSE; | |
3255 | response_data = (char *) &pSMBr->hdr.Protocol + | |
3256 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3257 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3258 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3259 | le16_to_cpu(pSMBr->t2.DataOffset); | |
d47d7c1a SF |
3260 | if(psrch_inf->smallBuf) |
3261 | cifs_small_buf_release( | |
3262 | psrch_inf->ntwrk_buf_start); | |
3263 | else | |
3264 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3265 | psrch_inf->srch_entries_start = response_data; |
3266 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3267 | psrch_inf->smallBuf = 0; |
1da177e4 LT |
3268 | if(parms->EndofSearch) |
3269 | psrch_inf->endOfSearch = TRUE; | |
3270 | else | |
3271 | psrch_inf->endOfSearch = FALSE; | |
3272 | ||
3273 | psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); | |
3274 | psrch_inf->index_of_last_entry += | |
3275 | psrch_inf->entries_in_buffer; | |
3276 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */ | |
3277 | ||
3278 | /* BB fixme add unlock here */ | |
3279 | } | |
3280 | ||
3281 | } | |
3282 | ||
3283 | /* BB On error, should we leave previous search buf (and count and | |
3284 | last entry fields) intact or free the previous one? */ | |
3285 | ||
3286 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3287 | since file handle passed in no longer valid */ | |
3288 | FNext2_err_exit: | |
3289 | if (rc != 0) | |
3290 | cifs_buf_release(pSMB); | |
3291 | ||
3292 | return rc; | |
3293 | } | |
3294 | ||
3295 | int | |
3296 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle) | |
3297 | { | |
3298 | int rc = 0; | |
3299 | FINDCLOSE_REQ *pSMB = NULL; | |
3300 | CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */ | |
3301 | int bytes_returned; | |
3302 | ||
3303 | cFYI(1, ("In CIFSSMBFindClose")); | |
3304 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
3305 | ||
3306 | /* no sense returning error if session restarted | |
3307 | as file handle has been closed */ | |
3308 | if(rc == -EAGAIN) | |
3309 | return 0; | |
3310 | if (rc) | |
3311 | return rc; | |
3312 | ||
3313 | pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ | |
3314 | pSMB->FileID = searchHandle; | |
3315 | pSMB->ByteCount = 0; | |
3316 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3317 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3318 | if (rc) { | |
3319 | cERROR(1, ("Send error in FindClose = %d", rc)); | |
3320 | } | |
a4544347 | 3321 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3322 | cifs_small_buf_release(pSMB); |
3323 | ||
3324 | /* Since session is dead, search handle closed on server already */ | |
3325 | if (rc == -EAGAIN) | |
3326 | rc = 0; | |
3327 | ||
3328 | return rc; | |
3329 | } | |
3330 | ||
1da177e4 LT |
3331 | int |
3332 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
3333 | const unsigned char *searchName, | |
3334 | __u64 * inode_number, | |
737b758c | 3335 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3336 | { |
3337 | int rc = 0; | |
3338 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3339 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3340 | int name_len, bytes_returned; | |
3341 | __u16 params, byte_count; | |
3342 | ||
3343 | cFYI(1,("In GetSrvInodeNum for %s",searchName)); | |
3344 | if(tcon == NULL) | |
3345 | return -ENODEV; | |
3346 | ||
3347 | GetInodeNumberRetry: | |
3348 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3349 | (void **) &pSMBr); | |
3350 | if (rc) | |
3351 | return rc; | |
3352 | ||
3353 | ||
3354 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3355 | name_len = | |
b1a45695 | 3356 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3357 | PATH_MAX,nls_codepage, remap); |
1da177e4 LT |
3358 | name_len++; /* trailing null */ |
3359 | name_len *= 2; | |
3360 | } else { /* BB improve the check for buffer overruns BB */ | |
3361 | name_len = strnlen(searchName, PATH_MAX); | |
3362 | name_len++; /* trailing null */ | |
3363 | strncpy(pSMB->FileName, searchName, name_len); | |
3364 | } | |
3365 | ||
3366 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3367 | pSMB->TotalDataCount = 0; | |
3368 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3369 | /* BB find exact max data count below from sess structure BB */ | |
3370 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3371 | pSMB->MaxSetupCount = 0; | |
3372 | pSMB->Reserved = 0; | |
3373 | pSMB->Flags = 0; | |
3374 | pSMB->Timeout = 0; | |
3375 | pSMB->Reserved2 = 0; | |
3376 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3377 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
3378 | pSMB->DataCount = 0; | |
3379 | pSMB->DataOffset = 0; | |
3380 | pSMB->SetupCount = 1; | |
3381 | pSMB->Reserved3 = 0; | |
3382 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3383 | byte_count = params + 1 /* pad */ ; | |
3384 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3385 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3386 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3387 | pSMB->Reserved4 = 0; | |
3388 | pSMB->hdr.smb_buf_length += byte_count; | |
3389 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3390 | ||
3391 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3392 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3393 | if (rc) { | |
3394 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
3395 | } else { | |
3396 | /* decode response */ | |
3397 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3398 | if (rc || (pSMBr->ByteCount < 2)) | |
3399 | /* BB also check enough total bytes returned */ | |
3400 | /* If rc should we check for EOPNOSUPP and | |
3401 | disable the srvino flag? or in caller? */ | |
3402 | rc = -EIO; /* bad smb */ | |
3403 | else { | |
3404 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3405 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3406 | struct file_internal_info * pfinfo; | |
3407 | /* BB Do we need a cast or hash here ? */ | |
3408 | if(count < 8) { | |
3409 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); | |
3410 | rc = -EIO; | |
3411 | goto GetInodeNumOut; | |
3412 | } | |
3413 | pfinfo = (struct file_internal_info *) | |
3414 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3415 | *inode_number = pfinfo->UniqueId; | |
3416 | } | |
3417 | } | |
3418 | GetInodeNumOut: | |
3419 | cifs_buf_release(pSMB); | |
3420 | if (rc == -EAGAIN) | |
3421 | goto GetInodeNumberRetry; | |
3422 | return rc; | |
3423 | } | |
1da177e4 LT |
3424 | |
3425 | int | |
3426 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
3427 | const unsigned char *searchName, | |
3428 | unsigned char **targetUNCs, | |
3429 | unsigned int *number_of_UNC_in_array, | |
737b758c | 3430 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3431 | { |
3432 | /* TRANS2_GET_DFS_REFERRAL */ | |
3433 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
3434 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
3435 | struct dfs_referral_level_3 * referrals = NULL; | |
3436 | int rc = 0; | |
3437 | int bytes_returned; | |
3438 | int name_len; | |
3439 | unsigned int i; | |
3440 | char * temp; | |
3441 | __u16 params, byte_count; | |
3442 | *number_of_UNC_in_array = 0; | |
3443 | *targetUNCs = NULL; | |
3444 | ||
3445 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
3446 | if (ses == NULL) | |
3447 | return -ENODEV; | |
3448 | getDFSRetry: | |
3449 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
3450 | (void **) &pSMBr); | |
3451 | if (rc) | |
3452 | return rc; | |
1982c344 SF |
3453 | |
3454 | /* server pointer checked in called function, | |
3455 | but should never be null here anyway */ | |
3456 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3457 | pSMB->hdr.Tid = ses->ipc_tid; |
3458 | pSMB->hdr.Uid = ses->Suid; | |
3459 | if (ses->capabilities & CAP_STATUS32) { | |
3460 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; | |
3461 | } | |
3462 | if (ses->capabilities & CAP_DFS) { | |
3463 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; | |
3464 | } | |
3465 | ||
3466 | if (ses->capabilities & CAP_UNICODE) { | |
3467 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
3468 | name_len = | |
b1a45695 | 3469 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 3470 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3471 | name_len++; /* trailing null */ |
3472 | name_len *= 2; | |
3473 | } else { /* BB improve the check for buffer overruns BB */ | |
3474 | name_len = strnlen(searchName, PATH_MAX); | |
3475 | name_len++; /* trailing null */ | |
3476 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
3477 | } | |
3478 | ||
3479 | params = 2 /* level */ + name_len /*includes null */ ; | |
3480 | pSMB->TotalDataCount = 0; | |
3481 | pSMB->DataCount = 0; | |
3482 | pSMB->DataOffset = 0; | |
3483 | pSMB->MaxParameterCount = 0; | |
3484 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
3485 | pSMB->MaxSetupCount = 0; | |
3486 | pSMB->Reserved = 0; | |
3487 | pSMB->Flags = 0; | |
3488 | pSMB->Timeout = 0; | |
3489 | pSMB->Reserved2 = 0; | |
3490 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3491 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); | |
3492 | pSMB->SetupCount = 1; | |
3493 | pSMB->Reserved3 = 0; | |
3494 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
3495 | byte_count = params + 3 /* pad */ ; | |
3496 | pSMB->ParameterCount = cpu_to_le16(params); | |
3497 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3498 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
3499 | pSMB->hdr.smb_buf_length += byte_count; | |
3500 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3501 | ||
3502 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
3503 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3504 | if (rc) { | |
3505 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
3506 | } else { /* decode response */ | |
3507 | /* BB Add logic to parse referrals here */ | |
3508 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3509 | ||
3510 | if (rc || (pSMBr->ByteCount < 17)) /* BB also check enough total bytes returned */ | |
3511 | rc = -EIO; /* bad smb */ | |
3512 | else { | |
3513 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3514 | __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
3515 | ||
3516 | cFYI(1, | |
3517 | ("Decoding GetDFSRefer response. BCC: %d Offset %d", | |
3518 | pSMBr->ByteCount, data_offset)); | |
3519 | referrals = | |
3520 | (struct dfs_referral_level_3 *) | |
3521 | (8 /* sizeof start of data block */ + | |
3522 | data_offset + | |
3523 | (char *) &pSMBr->hdr.Protocol); | |
3524 | 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", | |
3525 | 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))); | |
3526 | /* BB This field is actually two bytes in from start of | |
3527 | data block so we could do safety check that DataBlock | |
3528 | begins at address of pSMBr->NumberOfReferrals */ | |
3529 | *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals); | |
3530 | ||
3531 | /* BB Fix below so can return more than one referral */ | |
3532 | if(*number_of_UNC_in_array > 1) | |
3533 | *number_of_UNC_in_array = 1; | |
3534 | ||
3535 | /* get the length of the strings describing refs */ | |
3536 | name_len = 0; | |
3537 | for(i=0;i<*number_of_UNC_in_array;i++) { | |
3538 | /* make sure that DfsPathOffset not past end */ | |
3539 | __u16 offset = le16_to_cpu(referrals->DfsPathOffset); | |
3540 | if (offset > data_count) { | |
3541 | /* if invalid referral, stop here and do | |
3542 | not try to copy any more */ | |
3543 | *number_of_UNC_in_array = i; | |
3544 | break; | |
3545 | } | |
3546 | temp = ((char *)referrals) + offset; | |
3547 | ||
3548 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3549 | name_len += UniStrnlen((wchar_t *)temp,data_count); | |
3550 | } else { | |
3551 | name_len += strnlen(temp,data_count); | |
3552 | } | |
3553 | referrals++; | |
3554 | /* BB add check that referral pointer does not fall off end PDU */ | |
3555 | ||
3556 | } | |
3557 | /* BB add check for name_len bigger than bcc */ | |
3558 | *targetUNCs = | |
3559 | kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL); | |
3560 | if(*targetUNCs == NULL) { | |
3561 | rc = -ENOMEM; | |
3562 | goto GetDFSRefExit; | |
3563 | } | |
3564 | /* copy the ref strings */ | |
3565 | referrals = | |
3566 | (struct dfs_referral_level_3 *) | |
3567 | (8 /* sizeof data hdr */ + | |
3568 | data_offset + | |
3569 | (char *) &pSMBr->hdr.Protocol); | |
3570 | ||
3571 | for(i=0;i<*number_of_UNC_in_array;i++) { | |
3572 | temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset); | |
3573 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3574 | cifs_strfromUCS_le(*targetUNCs, | |
e89dc920 | 3575 | (__le16 *) temp, name_len, nls_codepage); |
1da177e4 LT |
3576 | } else { |
3577 | strncpy(*targetUNCs,temp,name_len); | |
3578 | } | |
3579 | /* BB update target_uncs pointers */ | |
3580 | referrals++; | |
3581 | } | |
3582 | temp = *targetUNCs; | |
3583 | temp[name_len] = 0; | |
3584 | } | |
3585 | ||
3586 | } | |
3587 | GetDFSRefExit: | |
3588 | if (pSMB) | |
3589 | cifs_buf_release(pSMB); | |
3590 | ||
3591 | if (rc == -EAGAIN) | |
3592 | goto getDFSRetry; | |
3593 | ||
3594 | return rc; | |
3595 | } | |
3596 | ||
20962438 SF |
3597 | /* Query File System Info such as free space to old servers such as Win 9x */ |
3598 | int | |
3599 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
3600 | { | |
3601 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
3602 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3603 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3604 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
3605 | int rc = 0; | |
3606 | int bytes_returned = 0; | |
3607 | __u16 params, byte_count; | |
3608 | ||
3609 | cFYI(1, ("OldQFSInfo")); | |
3610 | oldQFSInfoRetry: | |
3611 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3612 | (void **) &pSMBr); | |
3613 | if (rc) | |
3614 | return rc; | |
3615 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3616 | (void **) &pSMBr); | |
3617 | if (rc) | |
3618 | return rc; | |
3619 | ||
3620 | params = 2; /* level */ | |
3621 | pSMB->TotalDataCount = 0; | |
3622 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3623 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3624 | pSMB->MaxSetupCount = 0; | |
3625 | pSMB->Reserved = 0; | |
3626 | pSMB->Flags = 0; | |
3627 | pSMB->Timeout = 0; | |
3628 | pSMB->Reserved2 = 0; | |
3629 | byte_count = params + 1 /* pad */ ; | |
3630 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3631 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3632 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3633 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3634 | pSMB->DataCount = 0; | |
3635 | pSMB->DataOffset = 0; | |
3636 | pSMB->SetupCount = 1; | |
3637 | pSMB->Reserved3 = 0; | |
3638 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3639 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
3640 | pSMB->hdr.smb_buf_length += byte_count; | |
3641 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3642 | ||
3643 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3644 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3645 | if (rc) { | |
3646 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
3647 | } else { /* decode response */ | |
3648 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3649 | ||
3650 | if (rc || (pSMBr->ByteCount < 18)) | |
3651 | rc = -EIO; /* bad smb */ | |
3652 | else { | |
3653 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3654 | cFYI(1,("qfsinf resp BCC: %d Offset %d", | |
3655 | pSMBr->ByteCount, data_offset)); | |
3656 | ||
3657 | response_data = | |
3658 | (FILE_SYSTEM_ALLOC_INFO *) | |
3659 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
3660 | FSData->f_bsize = | |
3661 | le16_to_cpu(response_data->BytesPerSector) * | |
3662 | le32_to_cpu(response_data-> | |
3663 | SectorsPerAllocationUnit); | |
3664 | FSData->f_blocks = | |
3665 | le32_to_cpu(response_data->TotalAllocationUnits); | |
3666 | FSData->f_bfree = FSData->f_bavail = | |
3667 | le32_to_cpu(response_data->FreeAllocationUnits); | |
3668 | cFYI(1, | |
3669 | ("Blocks: %lld Free: %lld Block size %ld", | |
3670 | (unsigned long long)FSData->f_blocks, | |
3671 | (unsigned long long)FSData->f_bfree, | |
3672 | FSData->f_bsize)); | |
3673 | } | |
3674 | } | |
3675 | cifs_buf_release(pSMB); | |
3676 | ||
3677 | if (rc == -EAGAIN) | |
3678 | goto oldQFSInfoRetry; | |
3679 | ||
3680 | return rc; | |
3681 | } | |
3682 | ||
1da177e4 | 3683 | int |
737b758c | 3684 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
3685 | { |
3686 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
3687 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3688 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3689 | FILE_SYSTEM_INFO *response_data; | |
3690 | int rc = 0; | |
3691 | int bytes_returned = 0; | |
3692 | __u16 params, byte_count; | |
3693 | ||
3694 | cFYI(1, ("In QFSInfo")); | |
3695 | QFSInfoRetry: | |
3696 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3697 | (void **) &pSMBr); | |
3698 | if (rc) | |
3699 | return rc; | |
3700 | ||
3701 | params = 2; /* level */ | |
3702 | pSMB->TotalDataCount = 0; | |
3703 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 3704 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
3705 | pSMB->MaxSetupCount = 0; |
3706 | pSMB->Reserved = 0; | |
3707 | pSMB->Flags = 0; | |
3708 | pSMB->Timeout = 0; | |
3709 | pSMB->Reserved2 = 0; | |
3710 | byte_count = params + 1 /* pad */ ; | |
3711 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3712 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3713 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3714 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3715 | pSMB->DataCount = 0; | |
3716 | pSMB->DataOffset = 0; | |
3717 | pSMB->SetupCount = 1; | |
3718 | pSMB->Reserved3 = 0; | |
3719 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3720 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
3721 | pSMB->hdr.smb_buf_length += byte_count; | |
3722 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3723 | ||
3724 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3725 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3726 | if (rc) { | |
20962438 | 3727 | cFYI(1, ("Send error in QFSInfo = %d", rc)); |
1da177e4 LT |
3728 | } else { /* decode response */ |
3729 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3730 | ||
20962438 | 3731 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
3732 | rc = -EIO; /* bad smb */ |
3733 | else { | |
3734 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
3735 | |
3736 | response_data = | |
3737 | (FILE_SYSTEM_INFO | |
3738 | *) (((char *) &pSMBr->hdr.Protocol) + | |
3739 | data_offset); | |
3740 | FSData->f_bsize = | |
3741 | le32_to_cpu(response_data->BytesPerSector) * | |
3742 | le32_to_cpu(response_data-> | |
3743 | SectorsPerAllocationUnit); | |
3744 | FSData->f_blocks = | |
3745 | le64_to_cpu(response_data->TotalAllocationUnits); | |
3746 | FSData->f_bfree = FSData->f_bavail = | |
3747 | le64_to_cpu(response_data->FreeAllocationUnits); | |
3748 | cFYI(1, | |
3749 | ("Blocks: %lld Free: %lld Block size %ld", | |
3750 | (unsigned long long)FSData->f_blocks, | |
3751 | (unsigned long long)FSData->f_bfree, | |
3752 | FSData->f_bsize)); | |
3753 | } | |
3754 | } | |
3755 | cifs_buf_release(pSMB); | |
3756 | ||
3757 | if (rc == -EAGAIN) | |
3758 | goto QFSInfoRetry; | |
3759 | ||
3760 | return rc; | |
3761 | } | |
3762 | ||
3763 | int | |
737b758c | 3764 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
3765 | { |
3766 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
3767 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3768 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3769 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
3770 | int rc = 0; | |
3771 | int bytes_returned = 0; | |
3772 | __u16 params, byte_count; | |
3773 | ||
3774 | cFYI(1, ("In QFSAttributeInfo")); | |
3775 | QFSAttributeRetry: | |
3776 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3777 | (void **) &pSMBr); | |
3778 | if (rc) | |
3779 | return rc; | |
3780 | ||
3781 | params = 2; /* level */ | |
3782 | pSMB->TotalDataCount = 0; | |
3783 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3784 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
3785 | pSMB->MaxSetupCount = 0; | |
3786 | pSMB->Reserved = 0; | |
3787 | pSMB->Flags = 0; | |
3788 | pSMB->Timeout = 0; | |
3789 | pSMB->Reserved2 = 0; | |
3790 | byte_count = params + 1 /* pad */ ; | |
3791 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3792 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3793 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3794 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3795 | pSMB->DataCount = 0; | |
3796 | pSMB->DataOffset = 0; | |
3797 | pSMB->SetupCount = 1; | |
3798 | pSMB->Reserved3 = 0; | |
3799 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3800 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
3801 | pSMB->hdr.smb_buf_length += byte_count; | |
3802 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3803 | ||
3804 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3805 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3806 | if (rc) { | |
3807 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
3808 | } else { /* decode response */ | |
3809 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3810 | ||
3811 | if (rc || (pSMBr->ByteCount < 13)) { /* BB also check enough bytes returned */ | |
3812 | rc = -EIO; /* bad smb */ | |
3813 | } else { | |
3814 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3815 | response_data = | |
3816 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
3817 | *) (((char *) &pSMBr->hdr.Protocol) + | |
3818 | data_offset); | |
3819 | memcpy(&tcon->fsAttrInfo, response_data, | |
3820 | sizeof (FILE_SYSTEM_ATTRIBUTE_INFO)); | |
3821 | } | |
3822 | } | |
3823 | cifs_buf_release(pSMB); | |
3824 | ||
3825 | if (rc == -EAGAIN) | |
3826 | goto QFSAttributeRetry; | |
3827 | ||
3828 | return rc; | |
3829 | } | |
3830 | ||
3831 | int | |
737b758c | 3832 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
3833 | { |
3834 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
3835 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3836 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3837 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
3838 | int rc = 0; | |
3839 | int bytes_returned = 0; | |
3840 | __u16 params, byte_count; | |
3841 | ||
3842 | cFYI(1, ("In QFSDeviceInfo")); | |
3843 | QFSDeviceRetry: | |
3844 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3845 | (void **) &pSMBr); | |
3846 | if (rc) | |
3847 | return rc; | |
3848 | ||
3849 | params = 2; /* level */ | |
3850 | pSMB->TotalDataCount = 0; | |
3851 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3852 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
3853 | pSMB->MaxSetupCount = 0; | |
3854 | pSMB->Reserved = 0; | |
3855 | pSMB->Flags = 0; | |
3856 | pSMB->Timeout = 0; | |
3857 | pSMB->Reserved2 = 0; | |
3858 | byte_count = params + 1 /* pad */ ; | |
3859 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3860 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3861 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3862 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3863 | ||
3864 | pSMB->DataCount = 0; | |
3865 | pSMB->DataOffset = 0; | |
3866 | pSMB->SetupCount = 1; | |
3867 | pSMB->Reserved3 = 0; | |
3868 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3869 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
3870 | pSMB->hdr.smb_buf_length += byte_count; | |
3871 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3872 | ||
3873 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3874 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3875 | if (rc) { | |
3876 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
3877 | } else { /* decode response */ | |
3878 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3879 | ||
3880 | if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO))) | |
3881 | rc = -EIO; /* bad smb */ | |
3882 | else { | |
3883 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3884 | response_data = | |
737b758c SF |
3885 | (FILE_SYSTEM_DEVICE_INFO *) |
3886 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
3887 | data_offset); |
3888 | memcpy(&tcon->fsDevInfo, response_data, | |
3889 | sizeof (FILE_SYSTEM_DEVICE_INFO)); | |
3890 | } | |
3891 | } | |
3892 | cifs_buf_release(pSMB); | |
3893 | ||
3894 | if (rc == -EAGAIN) | |
3895 | goto QFSDeviceRetry; | |
3896 | ||
3897 | return rc; | |
3898 | } | |
3899 | ||
3900 | int | |
737b758c | 3901 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
3902 | { |
3903 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
3904 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
3905 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
3906 | FILE_SYSTEM_UNIX_INFO *response_data; | |
3907 | int rc = 0; | |
3908 | int bytes_returned = 0; | |
3909 | __u16 params, byte_count; | |
3910 | ||
3911 | cFYI(1, ("In QFSUnixInfo")); | |
3912 | QFSUnixRetry: | |
3913 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3914 | (void **) &pSMBr); | |
3915 | if (rc) | |
3916 | return rc; | |
3917 | ||
3918 | params = 2; /* level */ | |
3919 | pSMB->TotalDataCount = 0; | |
3920 | pSMB->DataCount = 0; | |
3921 | pSMB->DataOffset = 0; | |
3922 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3923 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
3924 | pSMB->MaxSetupCount = 0; | |
3925 | pSMB->Reserved = 0; | |
3926 | pSMB->Flags = 0; | |
3927 | pSMB->Timeout = 0; | |
3928 | pSMB->Reserved2 = 0; | |
3929 | byte_count = params + 1 /* pad */ ; | |
3930 | pSMB->ParameterCount = cpu_to_le16(params); | |
3931 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3932 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct | |
3933 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
3934 | pSMB->SetupCount = 1; | |
3935 | pSMB->Reserved3 = 0; | |
3936 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
3937 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
3938 | pSMB->hdr.smb_buf_length += byte_count; | |
3939 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3940 | ||
3941 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3942 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3943 | if (rc) { | |
3944 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
3945 | } else { /* decode response */ | |
3946 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3947 | ||
3948 | if (rc || (pSMBr->ByteCount < 13)) { | |
3949 | rc = -EIO; /* bad smb */ | |
3950 | } else { | |
3951 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3952 | response_data = | |
3953 | (FILE_SYSTEM_UNIX_INFO | |
3954 | *) (((char *) &pSMBr->hdr.Protocol) + | |
3955 | data_offset); | |
3956 | memcpy(&tcon->fsUnixInfo, response_data, | |
3957 | sizeof (FILE_SYSTEM_UNIX_INFO)); | |
3958 | } | |
3959 | } | |
3960 | cifs_buf_release(pSMB); | |
3961 | ||
3962 | if (rc == -EAGAIN) | |
3963 | goto QFSUnixRetry; | |
3964 | ||
3965 | ||
3966 | return rc; | |
3967 | } | |
3968 | ||
ac67055e | 3969 | int |
45abc6ee | 3970 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
3971 | { |
3972 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
3973 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
3974 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
3975 | int rc = 0; | |
3976 | int bytes_returned = 0; | |
3977 | __u16 params, param_offset, offset, byte_count; | |
3978 | ||
3979 | cFYI(1, ("In SETFSUnixInfo")); | |
3980 | SETFSUnixRetry: | |
f26282c9 | 3981 | /* BB switch to small buf init to save memory */ |
ac67055e JA |
3982 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3983 | (void **) &pSMBr); | |
3984 | if (rc) | |
3985 | return rc; | |
3986 | ||
3987 | params = 4; /* 2 bytes zero followed by info level. */ | |
3988 | pSMB->MaxSetupCount = 0; | |
3989 | pSMB->Reserved = 0; | |
3990 | pSMB->Flags = 0; | |
3991 | pSMB->Timeout = 0; | |
3992 | pSMB->Reserved2 = 0; | |
3993 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4; | |
3994 | offset = param_offset + params; | |
3995 | ||
3996 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
3997 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
3998 | pSMB->SetupCount = 1; | |
3999 | pSMB->Reserved3 = 0; | |
4000 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4001 | byte_count = 1 /* pad */ + params + 12; | |
4002 | ||
4003 | pSMB->DataCount = cpu_to_le16(12); | |
4004 | pSMB->ParameterCount = cpu_to_le16(params); | |
4005 | pSMB->TotalDataCount = pSMB->DataCount; | |
4006 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4007 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4008 | pSMB->DataOffset = cpu_to_le16(offset); | |
4009 | ||
4010 | /* Params. */ | |
4011 | pSMB->FileNum = 0; | |
4012 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4013 | ||
4014 | /* Data. */ | |
4015 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4016 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4017 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4018 | ||
4019 | pSMB->hdr.smb_buf_length += byte_count; | |
4020 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4021 | ||
4022 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4023 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4024 | if (rc) { | |
4025 | cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); | |
4026 | } else { /* decode response */ | |
4027 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4028 | if (rc) { | |
4029 | rc = -EIO; /* bad smb */ | |
4030 | } | |
4031 | } | |
4032 | cifs_buf_release(pSMB); | |
4033 | ||
4034 | if (rc == -EAGAIN) | |
4035 | goto SETFSUnixRetry; | |
4036 | ||
4037 | return rc; | |
4038 | } | |
4039 | ||
4040 | ||
1da177e4 LT |
4041 | |
4042 | int | |
4043 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4044 | struct kstatfs *FSData) |
1da177e4 LT |
4045 | { |
4046 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4047 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4048 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4049 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4050 | int rc = 0; | |
4051 | int bytes_returned = 0; | |
4052 | __u16 params, byte_count; | |
4053 | ||
4054 | cFYI(1, ("In QFSPosixInfo")); | |
4055 | QFSPosixRetry: | |
4056 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4057 | (void **) &pSMBr); | |
4058 | if (rc) | |
4059 | return rc; | |
4060 | ||
4061 | params = 2; /* level */ | |
4062 | pSMB->TotalDataCount = 0; | |
4063 | pSMB->DataCount = 0; | |
4064 | pSMB->DataOffset = 0; | |
4065 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4066 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
4067 | pSMB->MaxSetupCount = 0; | |
4068 | pSMB->Reserved = 0; | |
4069 | pSMB->Flags = 0; | |
4070 | pSMB->Timeout = 0; | |
4071 | pSMB->Reserved2 = 0; | |
4072 | byte_count = params + 1 /* pad */ ; | |
4073 | pSMB->ParameterCount = cpu_to_le16(params); | |
4074 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4075 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct | |
4076 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4077 | pSMB->SetupCount = 1; | |
4078 | pSMB->Reserved3 = 0; | |
4079 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4080 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4081 | pSMB->hdr.smb_buf_length += byte_count; | |
4082 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4083 | ||
4084 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4085 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4086 | if (rc) { | |
4087 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4088 | } else { /* decode response */ | |
4089 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4090 | ||
4091 | if (rc || (pSMBr->ByteCount < 13)) { | |
4092 | rc = -EIO; /* bad smb */ | |
4093 | } else { | |
4094 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4095 | response_data = | |
4096 | (FILE_SYSTEM_POSIX_INFO | |
4097 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4098 | data_offset); | |
4099 | FSData->f_bsize = | |
4100 | le32_to_cpu(response_data->BlockSize); | |
4101 | FSData->f_blocks = | |
4102 | le64_to_cpu(response_data->TotalBlocks); | |
4103 | FSData->f_bfree = | |
4104 | le64_to_cpu(response_data->BlocksAvail); | |
70ca734a | 4105 | if(response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4106 | FSData->f_bavail = FSData->f_bfree; |
4107 | } else { | |
4108 | FSData->f_bavail = | |
4109 | le64_to_cpu(response_data->UserBlocksAvail); | |
4110 | } | |
70ca734a | 4111 | if(response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 LT |
4112 | FSData->f_files = |
4113 | le64_to_cpu(response_data->TotalFileNodes); | |
70ca734a | 4114 | if(response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 LT |
4115 | FSData->f_ffree = |
4116 | le64_to_cpu(response_data->FreeFileNodes); | |
4117 | } | |
4118 | } | |
4119 | cifs_buf_release(pSMB); | |
4120 | ||
4121 | if (rc == -EAGAIN) | |
4122 | goto QFSPosixRetry; | |
4123 | ||
4124 | return rc; | |
4125 | } | |
4126 | ||
4127 | ||
4128 | /* We can not use write of zero bytes trick to | |
4129 | set file size due to need for large file support. Also note that | |
4130 | this SetPathInfo is preferred to SetFileInfo based method in next | |
4131 | routine which is only needed to work around a sharing violation bug | |
4132 | in Samba which this routine can run into */ | |
4133 | ||
4134 | int | |
4135 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
737b758c SF |
4136 | __u64 size, int SetAllocation, |
4137 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
4138 | { |
4139 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4140 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4141 | struct file_end_of_file_info *parm_data; | |
4142 | int name_len; | |
4143 | int rc = 0; | |
4144 | int bytes_returned = 0; | |
4145 | __u16 params, byte_count, data_count, param_offset, offset; | |
4146 | ||
4147 | cFYI(1, ("In SetEOF")); | |
4148 | SetEOFRetry: | |
4149 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4150 | (void **) &pSMBr); | |
4151 | if (rc) | |
4152 | return rc; | |
4153 | ||
4154 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4155 | name_len = | |
b1a45695 | 4156 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4157 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4158 | name_len++; /* trailing null */ |
4159 | name_len *= 2; | |
3e87d803 | 4160 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4161 | name_len = strnlen(fileName, PATH_MAX); |
4162 | name_len++; /* trailing null */ | |
4163 | strncpy(pSMB->FileName, fileName, name_len); | |
4164 | } | |
4165 | params = 6 + name_len; | |
4166 | data_count = sizeof (struct file_end_of_file_info); | |
4167 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3e87d803 | 4168 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4169 | pSMB->MaxSetupCount = 0; |
4170 | pSMB->Reserved = 0; | |
4171 | pSMB->Flags = 0; | |
4172 | pSMB->Timeout = 0; | |
4173 | pSMB->Reserved2 = 0; | |
4174 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
4175 | InformationLevel) - 4; | |
4176 | offset = param_offset + params; | |
4177 | if(SetAllocation) { | |
4178 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4179 | pSMB->InformationLevel = | |
4180 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4181 | else | |
4182 | pSMB->InformationLevel = | |
4183 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4184 | } else /* Set File Size */ { | |
4185 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4186 | pSMB->InformationLevel = | |
4187 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); | |
4188 | else | |
4189 | pSMB->InformationLevel = | |
4190 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); | |
4191 | } | |
4192 | ||
4193 | parm_data = | |
4194 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4195 | offset); | |
4196 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4197 | pSMB->DataOffset = cpu_to_le16(offset); | |
4198 | pSMB->SetupCount = 1; | |
4199 | pSMB->Reserved3 = 0; | |
4200 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4201 | byte_count = 3 /* pad */ + params + data_count; | |
4202 | pSMB->DataCount = cpu_to_le16(data_count); | |
4203 | pSMB->TotalDataCount = pSMB->DataCount; | |
4204 | pSMB->ParameterCount = cpu_to_le16(params); | |
4205 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4206 | pSMB->Reserved4 = 0; | |
4207 | pSMB->hdr.smb_buf_length += byte_count; | |
4208 | parm_data->FileSize = cpu_to_le64(size); | |
4209 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4210 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4211 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4212 | if (rc) { | |
4213 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); | |
4214 | } | |
4215 | ||
4216 | cifs_buf_release(pSMB); | |
4217 | ||
4218 | if (rc == -EAGAIN) | |
4219 | goto SetEOFRetry; | |
4220 | ||
4221 | return rc; | |
4222 | } | |
4223 | ||
4224 | int | |
4225 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, | |
4226 | __u16 fid, __u32 pid_of_opener, int SetAllocation) | |
4227 | { | |
4228 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4229 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
4230 | char *data_offset; | |
4231 | struct file_end_of_file_info *parm_data; | |
4232 | int rc = 0; | |
4233 | int bytes_returned = 0; | |
4234 | __u16 params, param_offset, offset, byte_count, count; | |
4235 | ||
4236 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
4237 | (long long)size)); | |
cd63499c SF |
4238 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4239 | ||
1da177e4 LT |
4240 | if (rc) |
4241 | return rc; | |
4242 | ||
cd63499c SF |
4243 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
4244 | ||
1da177e4 LT |
4245 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
4246 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
4247 | ||
4248 | params = 6; | |
4249 | pSMB->MaxSetupCount = 0; | |
4250 | pSMB->Reserved = 0; | |
4251 | pSMB->Flags = 0; | |
4252 | pSMB->Timeout = 0; | |
4253 | pSMB->Reserved2 = 0; | |
4254 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4255 | offset = param_offset + params; | |
4256 | ||
4257 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4258 | ||
4259 | count = sizeof(struct file_end_of_file_info); | |
4260 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4261 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
4262 | pSMB->SetupCount = 1; | |
4263 | pSMB->Reserved3 = 0; | |
4264 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4265 | byte_count = 3 /* pad */ + params + count; | |
4266 | pSMB->DataCount = cpu_to_le16(count); | |
4267 | pSMB->ParameterCount = cpu_to_le16(params); | |
4268 | pSMB->TotalDataCount = pSMB->DataCount; | |
4269 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4270 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4271 | parm_data = | |
4272 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4273 | offset); | |
4274 | pSMB->DataOffset = cpu_to_le16(offset); | |
4275 | parm_data->FileSize = cpu_to_le64(size); | |
4276 | pSMB->Fid = fid; | |
4277 | if(SetAllocation) { | |
4278 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4279 | pSMB->InformationLevel = | |
4280 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4281 | else | |
4282 | pSMB->InformationLevel = | |
4283 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4284 | } else /* Set File Size */ { | |
4285 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4286 | pSMB->InformationLevel = | |
4287 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); | |
4288 | else | |
4289 | pSMB->InformationLevel = | |
4290 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); | |
4291 | } | |
4292 | pSMB->Reserved4 = 0; | |
4293 | pSMB->hdr.smb_buf_length += byte_count; | |
4294 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4295 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4296 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4297 | if (rc) { | |
4298 | cFYI(1, | |
4299 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
4300 | rc)); | |
4301 | } | |
4302 | ||
4303 | if (pSMB) | |
cd63499c | 4304 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
4305 | |
4306 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4307 | since file handle passed in no longer valid */ | |
4308 | ||
4309 | return rc; | |
4310 | } | |
4311 | ||
4312 | /* Some legacy servers such as NT4 require that the file times be set on | |
4313 | an open handle, rather than by pathname - this is awkward due to | |
4314 | potential access conflicts on the open, but it is unavoidable for these | |
4315 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4316 | time and resort to the original setpathinfo level which takes the ancient | |
4317 | DOS time format with 2 second granularity */ | |
4318 | int | |
4319 | CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data, | |
4320 | __u16 fid) | |
4321 | { | |
4322 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4323 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
4324 | char *data_offset; | |
4325 | int rc = 0; | |
4326 | int bytes_returned = 0; | |
4327 | __u16 params, param_offset, offset, byte_count, count; | |
4328 | ||
4329 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
cd63499c SF |
4330 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4331 | ||
1da177e4 LT |
4332 | if (rc) |
4333 | return rc; | |
4334 | ||
cd63499c SF |
4335 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
4336 | ||
1da177e4 LT |
4337 | /* At this point there is no need to override the current pid |
4338 | with the pid of the opener, but that could change if we someday | |
4339 | use an existing handle (rather than opening one on the fly) */ | |
4340 | /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4341 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/ | |
4342 | ||
4343 | params = 6; | |
4344 | pSMB->MaxSetupCount = 0; | |
4345 | pSMB->Reserved = 0; | |
4346 | pSMB->Flags = 0; | |
4347 | pSMB->Timeout = 0; | |
4348 | pSMB->Reserved2 = 0; | |
4349 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4350 | offset = param_offset + params; | |
4351 | ||
4352 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4353 | ||
4354 | count = sizeof (FILE_BASIC_INFO); | |
4355 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4356 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
4357 | pSMB->SetupCount = 1; | |
4358 | pSMB->Reserved3 = 0; | |
4359 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4360 | byte_count = 3 /* pad */ + params + count; | |
4361 | pSMB->DataCount = cpu_to_le16(count); | |
4362 | pSMB->ParameterCount = cpu_to_le16(params); | |
4363 | pSMB->TotalDataCount = pSMB->DataCount; | |
4364 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4365 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4366 | pSMB->DataOffset = cpu_to_le16(offset); | |
4367 | pSMB->Fid = fid; | |
4368 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4369 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4370 | else | |
4371 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4372 | pSMB->Reserved4 = 0; | |
4373 | pSMB->hdr.smb_buf_length += byte_count; | |
4374 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4375 | memcpy(data_offset,data,sizeof(FILE_BASIC_INFO)); | |
4376 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4377 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4378 | if (rc) { | |
4379 | cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc)); | |
4380 | } | |
4381 | ||
cd63499c | 4382 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
4383 | |
4384 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4385 | since file handle passed in no longer valid */ | |
4386 | ||
4387 | return rc; | |
4388 | } | |
4389 | ||
4390 | ||
4391 | int | |
4392 | CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4393 | const FILE_BASIC_INFO * data, | |
737b758c | 4394 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4395 | { |
4396 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4397 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4398 | int name_len; | |
4399 | int rc = 0; | |
4400 | int bytes_returned = 0; | |
4401 | char *data_offset; | |
4402 | __u16 params, param_offset, offset, byte_count, count; | |
4403 | ||
4404 | cFYI(1, ("In SetTimes")); | |
4405 | ||
4406 | SetTimesRetry: | |
4407 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4408 | (void **) &pSMBr); | |
4409 | if (rc) | |
4410 | return rc; | |
4411 | ||
4412 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4413 | name_len = | |
b1a45695 | 4414 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4415 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4416 | name_len++; /* trailing null */ |
4417 | name_len *= 2; | |
4418 | } else { /* BB improve the check for buffer overruns BB */ | |
4419 | name_len = strnlen(fileName, PATH_MAX); | |
4420 | name_len++; /* trailing null */ | |
4421 | strncpy(pSMB->FileName, fileName, name_len); | |
4422 | } | |
4423 | ||
4424 | params = 6 + name_len; | |
4425 | count = sizeof (FILE_BASIC_INFO); | |
4426 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4427 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4428 | pSMB->MaxSetupCount = 0; | |
4429 | pSMB->Reserved = 0; | |
4430 | pSMB->Flags = 0; | |
4431 | pSMB->Timeout = 0; | |
4432 | pSMB->Reserved2 = 0; | |
4433 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
4434 | InformationLevel) - 4; | |
4435 | offset = param_offset + params; | |
4436 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4437 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4438 | pSMB->DataOffset = cpu_to_le16(offset); | |
4439 | pSMB->SetupCount = 1; | |
4440 | pSMB->Reserved3 = 0; | |
4441 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4442 | byte_count = 3 /* pad */ + params + count; | |
4443 | ||
4444 | pSMB->DataCount = cpu_to_le16(count); | |
4445 | pSMB->ParameterCount = cpu_to_le16(params); | |
4446 | pSMB->TotalDataCount = pSMB->DataCount; | |
4447 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4448 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4449 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4450 | else | |
4451 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4452 | pSMB->Reserved4 = 0; | |
4453 | pSMB->hdr.smb_buf_length += byte_count; | |
4454 | memcpy(data_offset, data, sizeof (FILE_BASIC_INFO)); | |
4455 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4456 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4457 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4458 | if (rc) { | |
4459 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); | |
4460 | } | |
4461 | ||
4462 | cifs_buf_release(pSMB); | |
4463 | ||
4464 | if (rc == -EAGAIN) | |
4465 | goto SetTimesRetry; | |
4466 | ||
4467 | return rc; | |
4468 | } | |
4469 | ||
4470 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
4471 | /* Can be used to set attributes */ | |
4472 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
4473 | handling it anyway and NT4 was what we thought it would be needed for | |
4474 | Do not delete it until we prove whether needed for Win9x though */ | |
4475 | int | |
4476 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
4477 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
4478 | { | |
4479 | SETATTR_REQ *pSMB = NULL; | |
4480 | SETATTR_RSP *pSMBr = NULL; | |
4481 | int rc = 0; | |
4482 | int bytes_returned; | |
4483 | int name_len; | |
4484 | ||
4485 | cFYI(1, ("In SetAttrLegacy")); | |
4486 | ||
4487 | SetAttrLgcyRetry: | |
4488 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
4489 | (void **) &pSMBr); | |
4490 | if (rc) | |
4491 | return rc; | |
4492 | ||
4493 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4494 | name_len = | |
b1a45695 | 4495 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
4496 | PATH_MAX, nls_codepage); |
4497 | name_len++; /* trailing null */ | |
4498 | name_len *= 2; | |
4499 | } else { /* BB improve the check for buffer overruns BB */ | |
4500 | name_len = strnlen(fileName, PATH_MAX); | |
4501 | name_len++; /* trailing null */ | |
4502 | strncpy(pSMB->fileName, fileName, name_len); | |
4503 | } | |
4504 | pSMB->attr = cpu_to_le16(dos_attrs); | |
4505 | pSMB->BufferFormat = 0x04; | |
4506 | pSMB->hdr.smb_buf_length += name_len + 1; | |
4507 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
4508 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4509 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4510 | if (rc) { | |
4511 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); | |
4512 | } | |
4513 | ||
4514 | cifs_buf_release(pSMB); | |
4515 | ||
4516 | if (rc == -EAGAIN) | |
4517 | goto SetAttrLgcyRetry; | |
4518 | ||
4519 | return rc; | |
4520 | } | |
4521 | #endif /* temporarily unneeded SetAttr legacy function */ | |
4522 | ||
4523 | int | |
4524 | CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon, | |
737b758c SF |
4525 | char *fileName, __u64 mode, __u64 uid, __u64 gid, |
4526 | dev_t device, const struct nls_table *nls_codepage, | |
4527 | int remap) | |
1da177e4 LT |
4528 | { |
4529 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4530 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4531 | int name_len; | |
4532 | int rc = 0; | |
4533 | int bytes_returned = 0; | |
4534 | FILE_UNIX_BASIC_INFO *data_offset; | |
4535 | __u16 params, param_offset, offset, count, byte_count; | |
4536 | ||
4537 | cFYI(1, ("In SetUID/GID/Mode")); | |
4538 | setPermsRetry: | |
4539 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4540 | (void **) &pSMBr); | |
4541 | if (rc) | |
4542 | return rc; | |
4543 | ||
4544 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4545 | name_len = | |
b1a45695 | 4546 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4547 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4548 | name_len++; /* trailing null */ |
4549 | name_len *= 2; | |
3e87d803 | 4550 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4551 | name_len = strnlen(fileName, PATH_MAX); |
4552 | name_len++; /* trailing null */ | |
4553 | strncpy(pSMB->FileName, fileName, name_len); | |
4554 | } | |
4555 | ||
4556 | params = 6 + name_len; | |
4557 | count = sizeof (FILE_UNIX_BASIC_INFO); | |
4558 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4559 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4560 | pSMB->MaxSetupCount = 0; | |
4561 | pSMB->Reserved = 0; | |
4562 | pSMB->Flags = 0; | |
4563 | pSMB->Timeout = 0; | |
4564 | pSMB->Reserved2 = 0; | |
4565 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
4566 | InformationLevel) - 4; | |
4567 | offset = param_offset + params; | |
4568 | data_offset = | |
4569 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
4570 | offset); | |
4571 | memset(data_offset, 0, count); | |
4572 | pSMB->DataOffset = cpu_to_le16(offset); | |
4573 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4574 | pSMB->SetupCount = 1; | |
4575 | pSMB->Reserved3 = 0; | |
4576 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4577 | byte_count = 3 /* pad */ + params + count; | |
4578 | pSMB->ParameterCount = cpu_to_le16(params); | |
4579 | pSMB->DataCount = cpu_to_le16(count); | |
4580 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4581 | pSMB->TotalDataCount = pSMB->DataCount; | |
4582 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
4583 | pSMB->Reserved4 = 0; | |
4584 | pSMB->hdr.smb_buf_length += byte_count; | |
4585 | data_offset->Uid = cpu_to_le64(uid); | |
4586 | data_offset->Gid = cpu_to_le64(gid); | |
4587 | /* better to leave device as zero when it is */ | |
4588 | data_offset->DevMajor = cpu_to_le64(MAJOR(device)); | |
4589 | data_offset->DevMinor = cpu_to_le64(MINOR(device)); | |
4590 | data_offset->Permissions = cpu_to_le64(mode); | |
4591 | ||
4592 | if(S_ISREG(mode)) | |
4593 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
4594 | else if(S_ISDIR(mode)) | |
4595 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
4596 | else if(S_ISLNK(mode)) | |
4597 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
4598 | else if(S_ISCHR(mode)) | |
4599 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
4600 | else if(S_ISBLK(mode)) | |
4601 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
4602 | else if(S_ISFIFO(mode)) | |
4603 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
4604 | else if(S_ISSOCK(mode)) | |
4605 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
4606 | ||
4607 | ||
4608 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4609 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4610 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4611 | if (rc) { | |
4612 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); | |
4613 | } | |
4614 | ||
4615 | if (pSMB) | |
4616 | cifs_buf_release(pSMB); | |
4617 | if (rc == -EAGAIN) | |
4618 | goto setPermsRetry; | |
4619 | return rc; | |
4620 | } | |
4621 | ||
4622 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, | |
167a251a SF |
4623 | const int notify_subdirs, const __u16 netfid, |
4624 | __u32 filter, struct file * pfile, int multishot, | |
4625 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
4626 | { |
4627 | int rc = 0; | |
4628 | struct smb_com_transaction_change_notify_req * pSMB = NULL; | |
0a4b92c0 | 4629 | struct smb_com_ntransaction_change_notify_rsp * pSMBr = NULL; |
abb15b8a | 4630 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
4631 | int bytes_returned; |
4632 | ||
4633 | cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid)); | |
4634 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
4635 | (void **) &pSMBr); | |
4636 | if (rc) | |
4637 | return rc; | |
4638 | ||
4639 | pSMB->TotalParameterCount = 0 ; | |
4640 | pSMB->TotalDataCount = 0; | |
4641 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
4642 | /* BB find exact data count max from sess structure BB */ | |
4643 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
4644 | /* BB VERIFY verify which is correct for above BB */ |
4645 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
4646 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
4647 | ||
1da177e4 LT |
4648 | pSMB->MaxSetupCount = 4; |
4649 | pSMB->Reserved = 0; | |
4650 | pSMB->ParameterOffset = 0; | |
4651 | pSMB->DataCount = 0; | |
4652 | pSMB->DataOffset = 0; | |
4653 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
4654 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
4655 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4656 | if(notify_subdirs) | |
4657 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
4658 | pSMB->Reserved2 = 0; | |
4659 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
4660 | pSMB->Fid = netfid; /* file handle always le */ | |
4661 | pSMB->ByteCount = 0; | |
4662 | ||
4663 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4664 | (struct smb_hdr *) pSMBr, &bytes_returned, -1); | |
4665 | if (rc) { | |
4666 | cFYI(1, ("Error in Notify = %d", rc)); | |
ff5dbd9e SF |
4667 | } else { |
4668 | /* Add file to outstanding requests */ | |
47c786e7 | 4669 | /* BB change to kmem cache alloc */ |
ff5dbd9e | 4670 | dnotify_req = (struct dir_notify_req *) kmalloc( |
47c786e7 SF |
4671 | sizeof(struct dir_notify_req), |
4672 | GFP_KERNEL); | |
4673 | if(dnotify_req) { | |
4674 | dnotify_req->Pid = pSMB->hdr.Pid; | |
4675 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
4676 | dnotify_req->Mid = pSMB->hdr.Mid; | |
4677 | dnotify_req->Tid = pSMB->hdr.Tid; | |
4678 | dnotify_req->Uid = pSMB->hdr.Uid; | |
4679 | dnotify_req->netfid = netfid; | |
4680 | dnotify_req->pfile = pfile; | |
4681 | dnotify_req->filter = filter; | |
4682 | dnotify_req->multishot = multishot; | |
4683 | spin_lock(&GlobalMid_Lock); | |
4684 | list_add_tail(&dnotify_req->lhead, | |
4685 | &GlobalDnotifyReqList); | |
4686 | spin_unlock(&GlobalMid_Lock); | |
4687 | } else | |
4688 | rc = -ENOMEM; | |
1da177e4 LT |
4689 | } |
4690 | cifs_buf_release(pSMB); | |
4691 | return rc; | |
4692 | } | |
4693 | #ifdef CONFIG_CIFS_XATTR | |
4694 | ssize_t | |
4695 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
4696 | const unsigned char *searchName, | |
4697 | char * EAData, size_t buf_size, | |
737b758c | 4698 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4699 | { |
4700 | /* BB assumes one setup word */ | |
4701 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4702 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4703 | int rc = 0; | |
4704 | int bytes_returned; | |
4705 | int name_len; | |
4706 | struct fea * temp_fea; | |
4707 | char * temp_ptr; | |
4708 | __u16 params, byte_count; | |
4709 | ||
4710 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
4711 | QAllEAsRetry: | |
4712 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4713 | (void **) &pSMBr); | |
4714 | if (rc) | |
4715 | return rc; | |
4716 | ||
4717 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4718 | name_len = | |
b1a45695 | 4719 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 4720 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4721 | name_len++; /* trailing null */ |
4722 | name_len *= 2; | |
4723 | } else { /* BB improve the check for buffer overruns BB */ | |
4724 | name_len = strnlen(searchName, PATH_MAX); | |
4725 | name_len++; /* trailing null */ | |
4726 | strncpy(pSMB->FileName, searchName, name_len); | |
4727 | } | |
4728 | ||
4729 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
4730 | pSMB->TotalDataCount = 0; | |
4731 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4732 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
4733 | pSMB->MaxSetupCount = 0; | |
4734 | pSMB->Reserved = 0; | |
4735 | pSMB->Flags = 0; | |
4736 | pSMB->Timeout = 0; | |
4737 | pSMB->Reserved2 = 0; | |
4738 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4739 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
4740 | pSMB->DataCount = 0; | |
4741 | pSMB->DataOffset = 0; | |
4742 | pSMB->SetupCount = 1; | |
4743 | pSMB->Reserved3 = 0; | |
4744 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4745 | byte_count = params + 1 /* pad */ ; | |
4746 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4747 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4748 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
4749 | pSMB->Reserved4 = 0; | |
4750 | pSMB->hdr.smb_buf_length += byte_count; | |
4751 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4752 | ||
4753 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4754 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4755 | if (rc) { | |
4756 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
4757 | } else { /* decode response */ | |
4758 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4759 | ||
4760 | /* BB also check enough total bytes returned */ | |
4761 | /* BB we need to improve the validity checking | |
4762 | of these trans2 responses */ | |
4763 | if (rc || (pSMBr->ByteCount < 4)) | |
4764 | rc = -EIO; /* bad smb */ | |
4765 | /* else if (pFindData){ | |
4766 | memcpy((char *) pFindData, | |
4767 | (char *) &pSMBr->hdr.Protocol + | |
4768 | data_offset, kl); | |
4769 | }*/ else { | |
4770 | /* check that length of list is not more than bcc */ | |
4771 | /* check that each entry does not go beyond length | |
4772 | of list */ | |
4773 | /* check that each element of each entry does not | |
4774 | go beyond end of list */ | |
4775 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4776 | struct fealist * ea_response_data; | |
4777 | rc = 0; | |
4778 | /* validate_trans2_offsets() */ | |
4779 | /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/ | |
4780 | ea_response_data = (struct fealist *) | |
4781 | (((char *) &pSMBr->hdr.Protocol) + | |
4782 | data_offset); | |
4783 | name_len = le32_to_cpu(ea_response_data->list_len); | |
4784 | cFYI(1,("ea length %d", name_len)); | |
4785 | if(name_len <= 8) { | |
4786 | /* returned EA size zeroed at top of function */ | |
4787 | cFYI(1,("empty EA list returned from server")); | |
4788 | } else { | |
4789 | /* account for ea list len */ | |
4790 | name_len -= 4; | |
4791 | temp_fea = ea_response_data->list; | |
4792 | temp_ptr = (char *)temp_fea; | |
4793 | while(name_len > 0) { | |
4794 | __u16 value_len; | |
4795 | name_len -= 4; | |
4796 | temp_ptr += 4; | |
4797 | rc += temp_fea->name_len; | |
4798 | /* account for prefix user. and trailing null */ | |
4799 | rc = rc + 5 + 1; | |
4800 | if(rc<(int)buf_size) { | |
4801 | memcpy(EAData,"user.",5); | |
4802 | EAData+=5; | |
4803 | memcpy(EAData,temp_ptr,temp_fea->name_len); | |
4804 | EAData+=temp_fea->name_len; | |
4805 | /* null terminate name */ | |
4806 | *EAData = 0; | |
4807 | EAData = EAData + 1; | |
4808 | } else if(buf_size == 0) { | |
4809 | /* skip copy - calc size only */ | |
4810 | } else { | |
4811 | /* stop before overrun buffer */ | |
4812 | rc = -ERANGE; | |
4813 | break; | |
4814 | } | |
4815 | name_len -= temp_fea->name_len; | |
4816 | temp_ptr += temp_fea->name_len; | |
4817 | /* account for trailing null */ | |
4818 | name_len--; | |
4819 | temp_ptr++; | |
4820 | value_len = le16_to_cpu(temp_fea->value_len); | |
4821 | name_len -= value_len; | |
4822 | temp_ptr += value_len; | |
4823 | /* BB check that temp_ptr is still within smb BB*/ | |
4824 | /* no trailing null to account for in value len */ | |
4825 | /* go on to next EA */ | |
4826 | temp_fea = (struct fea *)temp_ptr; | |
4827 | } | |
4828 | } | |
4829 | } | |
4830 | } | |
4831 | if (pSMB) | |
4832 | cifs_buf_release(pSMB); | |
4833 | if (rc == -EAGAIN) | |
4834 | goto QAllEAsRetry; | |
4835 | ||
4836 | return (ssize_t)rc; | |
4837 | } | |
4838 | ||
4839 | ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon, | |
4840 | const unsigned char * searchName,const unsigned char * ea_name, | |
4841 | unsigned char * ea_value, size_t buf_size, | |
737b758c | 4842 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4843 | { |
4844 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4845 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4846 | int rc = 0; | |
4847 | int bytes_returned; | |
4848 | int name_len; | |
4849 | struct fea * temp_fea; | |
4850 | char * temp_ptr; | |
4851 | __u16 params, byte_count; | |
4852 | ||
4853 | cFYI(1, ("In Query EA path %s", searchName)); | |
4854 | QEARetry: | |
4855 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4856 | (void **) &pSMBr); | |
4857 | if (rc) | |
4858 | return rc; | |
4859 | ||
4860 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4861 | name_len = | |
b1a45695 | 4862 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 4863 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4864 | name_len++; /* trailing null */ |
4865 | name_len *= 2; | |
4866 | } else { /* BB improve the check for buffer overruns BB */ | |
4867 | name_len = strnlen(searchName, PATH_MAX); | |
4868 | name_len++; /* trailing null */ | |
4869 | strncpy(pSMB->FileName, searchName, name_len); | |
4870 | } | |
4871 | ||
4872 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ; | |
4873 | pSMB->TotalDataCount = 0; | |
4874 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4875 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
4876 | pSMB->MaxSetupCount = 0; | |
4877 | pSMB->Reserved = 0; | |
4878 | pSMB->Flags = 0; | |
4879 | pSMB->Timeout = 0; | |
4880 | pSMB->Reserved2 = 0; | |
4881 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4882 | struct smb_com_transaction2_qpi_req ,InformationLevel) - 4); | |
4883 | pSMB->DataCount = 0; | |
4884 | pSMB->DataOffset = 0; | |
4885 | pSMB->SetupCount = 1; | |
4886 | pSMB->Reserved3 = 0; | |
4887 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4888 | byte_count = params + 1 /* pad */ ; | |
4889 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4890 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4891 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
4892 | pSMB->Reserved4 = 0; | |
4893 | pSMB->hdr.smb_buf_length += byte_count; | |
4894 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4895 | ||
4896 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4897 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4898 | if (rc) { | |
4899 | cFYI(1, ("Send error in Query EA = %d", rc)); | |
4900 | } else { /* decode response */ | |
4901 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4902 | ||
4903 | /* BB also check enough total bytes returned */ | |
4904 | /* BB we need to improve the validity checking | |
4905 | of these trans2 responses */ | |
4906 | if (rc || (pSMBr->ByteCount < 4)) | |
4907 | rc = -EIO; /* bad smb */ | |
4908 | /* else if (pFindData){ | |
4909 | memcpy((char *) pFindData, | |
4910 | (char *) &pSMBr->hdr.Protocol + | |
4911 | data_offset, kl); | |
4912 | }*/ else { | |
4913 | /* check that length of list is not more than bcc */ | |
4914 | /* check that each entry does not go beyond length | |
4915 | of list */ | |
4916 | /* check that each element of each entry does not | |
4917 | go beyond end of list */ | |
4918 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4919 | struct fealist * ea_response_data; | |
4920 | rc = -ENODATA; | |
4921 | /* validate_trans2_offsets() */ | |
4922 | /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/ | |
4923 | ea_response_data = (struct fealist *) | |
4924 | (((char *) &pSMBr->hdr.Protocol) + | |
4925 | data_offset); | |
4926 | name_len = le32_to_cpu(ea_response_data->list_len); | |
4927 | cFYI(1,("ea length %d", name_len)); | |
4928 | if(name_len <= 8) { | |
4929 | /* returned EA size zeroed at top of function */ | |
4930 | cFYI(1,("empty EA list returned from server")); | |
4931 | } else { | |
4932 | /* account for ea list len */ | |
4933 | name_len -= 4; | |
4934 | temp_fea = ea_response_data->list; | |
4935 | temp_ptr = (char *)temp_fea; | |
4936 | /* loop through checking if we have a matching | |
4937 | name and then return the associated value */ | |
4938 | while(name_len > 0) { | |
4939 | __u16 value_len; | |
4940 | name_len -= 4; | |
4941 | temp_ptr += 4; | |
4942 | value_len = le16_to_cpu(temp_fea->value_len); | |
4943 | /* BB validate that value_len falls within SMB, | |
4944 | even though maximum for name_len is 255 */ | |
4945 | if(memcmp(temp_fea->name,ea_name, | |
4946 | temp_fea->name_len) == 0) { | |
4947 | /* found a match */ | |
4948 | rc = value_len; | |
4949 | /* account for prefix user. and trailing null */ | |
4950 | if(rc<=(int)buf_size) { | |
4951 | memcpy(ea_value, | |
4952 | temp_fea->name+temp_fea->name_len+1, | |
4953 | rc); | |
4954 | /* ea values, unlike ea names, | |
4955 | are not null terminated */ | |
4956 | } else if(buf_size == 0) { | |
4957 | /* skip copy - calc size only */ | |
4958 | } else { | |
4959 | /* stop before overrun buffer */ | |
4960 | rc = -ERANGE; | |
4961 | } | |
4962 | break; | |
4963 | } | |
4964 | name_len -= temp_fea->name_len; | |
4965 | temp_ptr += temp_fea->name_len; | |
4966 | /* account for trailing null */ | |
4967 | name_len--; | |
4968 | temp_ptr++; | |
4969 | name_len -= value_len; | |
4970 | temp_ptr += value_len; | |
4971 | /* no trailing null to account for in value len */ | |
4972 | /* go on to next EA */ | |
4973 | temp_fea = (struct fea *)temp_ptr; | |
4974 | } | |
4975 | } | |
4976 | } | |
4977 | } | |
4978 | if (pSMB) | |
4979 | cifs_buf_release(pSMB); | |
4980 | if (rc == -EAGAIN) | |
4981 | goto QEARetry; | |
4982 | ||
4983 | return (ssize_t)rc; | |
4984 | } | |
4985 | ||
4986 | int | |
4987 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4988 | const char * ea_name, const void * ea_value, | |
737b758c SF |
4989 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
4990 | int remap) | |
1da177e4 LT |
4991 | { |
4992 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4993 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4994 | struct fealist *parm_data; | |
4995 | int name_len; | |
4996 | int rc = 0; | |
4997 | int bytes_returned = 0; | |
4998 | __u16 params, param_offset, byte_count, offset, count; | |
4999 | ||
5000 | cFYI(1, ("In SetEA")); | |
5001 | SetEARetry: | |
5002 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5003 | (void **) &pSMBr); | |
5004 | if (rc) | |
5005 | return rc; | |
5006 | ||
5007 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5008 | name_len = | |
b1a45695 | 5009 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5010 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5011 | name_len++; /* trailing null */ |
5012 | name_len *= 2; | |
5013 | } else { /* BB improve the check for buffer overruns BB */ | |
5014 | name_len = strnlen(fileName, PATH_MAX); | |
5015 | name_len++; /* trailing null */ | |
5016 | strncpy(pSMB->FileName, fileName, name_len); | |
5017 | } | |
5018 | ||
5019 | params = 6 + name_len; | |
5020 | ||
5021 | /* done calculating parms using name_len of file name, | |
5022 | now use name_len to calculate length of ea name | |
5023 | we are going to create in the inode xattrs */ | |
5024 | if(ea_name == NULL) | |
5025 | name_len = 0; | |
5026 | else | |
5027 | name_len = strnlen(ea_name,255); | |
5028 | ||
5029 | count = sizeof(*parm_data) + ea_value_len + name_len + 1; | |
5030 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5031 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
5032 | pSMB->MaxSetupCount = 0; | |
5033 | pSMB->Reserved = 0; | |
5034 | pSMB->Flags = 0; | |
5035 | pSMB->Timeout = 0; | |
5036 | pSMB->Reserved2 = 0; | |
5037 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
5038 | InformationLevel) - 4; | |
5039 | offset = param_offset + params; | |
5040 | pSMB->InformationLevel = | |
5041 | cpu_to_le16(SMB_SET_FILE_EA); | |
5042 | ||
5043 | parm_data = | |
5044 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5045 | offset); | |
5046 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5047 | pSMB->DataOffset = cpu_to_le16(offset); | |
5048 | pSMB->SetupCount = 1; | |
5049 | pSMB->Reserved3 = 0; | |
5050 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5051 | byte_count = 3 /* pad */ + params + count; | |
5052 | pSMB->DataCount = cpu_to_le16(count); | |
5053 | parm_data->list_len = cpu_to_le32(count); | |
5054 | parm_data->list[0].EA_flags = 0; | |
5055 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5056 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 LT |
5057 | /* EA names are always ASCII */ |
5058 | if(ea_name) | |
5059 | strncpy(parm_data->list[0].name,ea_name,name_len); | |
5060 | parm_data->list[0].name[name_len] = 0; | |
5061 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5062 | /* caller ensures that ea_value_len is less than 64K but | |
5063 | we need to ensure that it fits within the smb */ | |
5064 | ||
5065 | /*BB add length check that it would fit in negotiated SMB buffer size BB */ | |
5066 | /* if(ea_value_len > buffer_size - 512 (enough for header)) */ | |
5067 | if(ea_value_len) | |
5068 | memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len); | |
5069 | ||
5070 | pSMB->TotalDataCount = pSMB->DataCount; | |
5071 | pSMB->ParameterCount = cpu_to_le16(params); | |
5072 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5073 | pSMB->Reserved4 = 0; | |
5074 | pSMB->hdr.smb_buf_length += byte_count; | |
5075 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5076 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5077 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5078 | if (rc) { | |
5079 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); | |
5080 | } | |
5081 | ||
5082 | cifs_buf_release(pSMB); | |
5083 | ||
5084 | if (rc == -EAGAIN) | |
5085 | goto SetEARetry; | |
5086 | ||
5087 | return rc; | |
5088 | } | |
5089 | ||
5090 | #endif |