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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
d185cda7 | 4 | * Copyright (C) International Business Machines Corp., 2002,2009 |
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 */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
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" | |
d0d66c44 | 37 | #include "cifsacl.h" |
1da177e4 LT |
38 | #include "cifsproto.h" |
39 | #include "cifs_unicode.h" | |
40 | #include "cifs_debug.h" | |
41 | ||
42 | #ifdef CONFIG_CIFS_POSIX | |
43 | static struct { | |
44 | int index; | |
45 | char *name; | |
46 | } protocols[] = { | |
3979877e SF |
47 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
48 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 49 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 50 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 51 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 52 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
53 | {BAD_PROT, "\2"} |
54 | }; | |
55 | #else | |
56 | static struct { | |
57 | int index; | |
58 | char *name; | |
59 | } protocols[] = { | |
3979877e SF |
60 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
61 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 62 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 63 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 64 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
65 | {BAD_PROT, "\2"} |
66 | }; | |
67 | #endif | |
68 | ||
3979877e SF |
69 | /* define the number of elements in the cifs dialect array */ |
70 | #ifdef CONFIG_CIFS_POSIX | |
71 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 72 | #define CIFS_NUM_PROT 4 |
3979877e SF |
73 | #else |
74 | #define CIFS_NUM_PROT 2 | |
75 | #endif /* CIFS_WEAK_PW_HASH */ | |
76 | #else /* not posix */ | |
77 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 78 | #define CIFS_NUM_PROT 3 |
3979877e SF |
79 | #else |
80 | #define CIFS_NUM_PROT 1 | |
81 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
82 | #endif /* CIFS_POSIX */ | |
83 | ||
1da177e4 LT |
84 | /* Mark as invalid, all open files on tree connections since they |
85 | were closed when session to server was lost */ | |
790fe579 | 86 | static void mark_open_files_invalid(struct cifsTconInfo *pTcon) |
1da177e4 LT |
87 | { |
88 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
89 | struct list_head *tmp; |
90 | struct list_head *tmp1; | |
1da177e4 LT |
91 | |
92 | /* list all files open on tree connection and mark them invalid */ | |
93 | write_lock(&GlobalSMBSeslock); | |
94 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { | |
790fe579 | 95 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 96 | open_file->invalidHandle = true; |
1da177e4 LT |
97 | } |
98 | write_unlock(&GlobalSMBSeslock); | |
09d1db5c SF |
99 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
100 | to this tcon */ | |
1da177e4 LT |
101 | } |
102 | ||
ad7a2926 SF |
103 | /* Allocate and return pointer to an SMB request buffer, and set basic |
104 | SMB information in the SMB header. If the return code is zero, this | |
105 | function must have filled in request_buf pointer */ | |
1da177e4 LT |
106 | static int |
107 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
ad7a2926 | 108 | void **request_buf) |
1da177e4 LT |
109 | { |
110 | int rc = 0; | |
111 | ||
112 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
113 | check for tcp and smb session status done differently | |
114 | for those three - in the calling routine */ | |
790fe579 SF |
115 | if (tcon) { |
116 | if (tcon->tidStatus == CifsExiting) { | |
6ab16d24 SF |
117 | /* only tree disconnect, open, and write, |
118 | (and ulogoff which does not have tcon) | |
119 | are allowed as we start force umount */ | |
790fe579 | 120 | if ((smb_command != SMB_COM_WRITE_ANDX) && |
50c2f753 | 121 | (smb_command != SMB_COM_OPEN_ANDX) && |
6ab16d24 | 122 | (smb_command != SMB_COM_TREE_DISCONNECT)) { |
790fe579 | 123 | cFYI(1, ("can not send cmd %d while umounting", |
6ab16d24 SF |
124 | smb_command)); |
125 | return -ENODEV; | |
126 | } | |
127 | } | |
790fe579 | 128 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && |
50c2f753 | 129 | (tcon->ses->server)) { |
1da177e4 | 130 | struct nls_table *nls_codepage; |
50c2f753 | 131 | /* Give Demultiplex thread up to 10 seconds to |
09d1db5c SF |
132 | reconnect, should be greater than cifs socket |
133 | timeout which is 7 seconds */ | |
c18c842b | 134 | while (tcon->ses->server->tcpStatus == |
63135e08 | 135 | CifsNeedReconnect) { |
1da177e4 | 136 | wait_event_interruptible_timeout(tcon->ses->server->response_q, |
c18c842b | 137 | (tcon->ses->server->tcpStatus == |
63135e08 SF |
138 | CifsGood), 10 * HZ); |
139 | if (tcon->ses->server->tcpStatus == | |
140 | CifsNeedReconnect) { | |
1da177e4 | 141 | /* on "soft" mounts we wait once */ |
4b18f2a9 | 142 | if (!tcon->retry || |
1da177e4 | 143 | (tcon->ses->status == CifsExiting)) { |
50c2f753 SF |
144 | cFYI(1, ("gave up waiting on " |
145 | "reconnect in smb_init")); | |
1da177e4 | 146 | return -EHOSTDOWN; |
09d1db5c SF |
147 | } /* else "hard" mount - keep retrying |
148 | until process is killed or server | |
149 | comes back on-line */ | |
1da177e4 LT |
150 | } else /* TCP session is reestablished now */ |
151 | break; | |
1da177e4 | 152 | } |
50c2f753 | 153 | |
1da177e4 LT |
154 | nls_codepage = load_nls_default(); |
155 | /* need to prevent multiple threads trying to | |
156 | simultaneously reconnect the same SMB session */ | |
157 | down(&tcon->ses->sesSem); | |
3b795210 | 158 | if (tcon->ses->need_reconnect) |
50c2f753 | 159 | rc = cifs_setup_session(0, tcon->ses, |
09d1db5c | 160 | nls_codepage); |
3b795210 | 161 | if (!rc && (tcon->need_reconnect)) { |
1da177e4 | 162 | mark_open_files_invalid(tcon); |
50c2f753 | 163 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
8af18971 | 164 | tcon, nls_codepage); |
1da177e4 | 165 | up(&tcon->ses->sesSem); |
3e84469d SF |
166 | /* BB FIXME add code to check if wsize needs |
167 | update due to negotiated smb buffer size | |
168 | shrinking */ | |
35028d71 | 169 | if (rc == 0) { |
1da177e4 | 170 | atomic_inc(&tconInfoReconnectCount); |
35028d71 SF |
171 | /* tell server Unix caps we support */ |
172 | if (tcon->ses->capabilities & CAP_UNIX) | |
173 | reset_cifs_unix_caps( | |
174 | 0 /* no xid */, | |
175 | tcon, | |
176 | NULL /* we do not know sb */, | |
177 | NULL /* no vol info */); | |
178 | } | |
1da177e4 LT |
179 | |
180 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
50c2f753 SF |
181 | /* Removed call to reopen open files here. |
182 | It is safer (and faster) to reopen files | |
09d1db5c | 183 | one at a time as needed in read and write */ |
1da177e4 | 184 | |
50c2f753 | 185 | /* Check if handle based operation so we |
09d1db5c SF |
186 | know whether we can continue or not without |
187 | returning to caller to reset file handle */ | |
50c2f753 | 188 | switch (smb_command) { |
1da177e4 LT |
189 | case SMB_COM_READ_ANDX: |
190 | case SMB_COM_WRITE_ANDX: | |
191 | case SMB_COM_CLOSE: | |
192 | case SMB_COM_FIND_CLOSE2: | |
193 | case SMB_COM_LOCKING_ANDX: { | |
194 | unload_nls(nls_codepage); | |
195 | return -EAGAIN; | |
196 | } | |
197 | } | |
198 | } else { | |
199 | up(&tcon->ses->sesSem); | |
200 | } | |
201 | unload_nls(nls_codepage); | |
202 | ||
203 | } else { | |
204 | return -EIO; | |
205 | } | |
206 | } | |
790fe579 | 207 | if (rc) |
1da177e4 LT |
208 | return rc; |
209 | ||
210 | *request_buf = cifs_small_buf_get(); | |
211 | if (*request_buf == NULL) { | |
212 | /* BB should we add a retry in here if not a writepage? */ | |
213 | return -ENOMEM; | |
214 | } | |
215 | ||
63135e08 | 216 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 217 | tcon, wct); |
1da177e4 | 218 | |
790fe579 SF |
219 | if (tcon != NULL) |
220 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 221 | |
1da177e4 | 222 | return rc; |
5815449d SF |
223 | } |
224 | ||
12b3b8ff | 225 | int |
50c2f753 | 226 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 227 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
228 | { |
229 | int rc; | |
50c2f753 | 230 | struct smb_hdr *buffer; |
12b3b8ff | 231 | |
5815449d | 232 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 233 | if (rc) |
12b3b8ff SF |
234 | return rc; |
235 | ||
04fdabe1 | 236 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
237 | buffer->Mid = GetNextMid(ses->server); |
238 | if (ses->capabilities & CAP_UNICODE) | |
239 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 240 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
241 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
242 | ||
243 | /* uid, tid can stay at zero as set in header assemble */ | |
244 | ||
50c2f753 | 245 | /* BB add support for turning on the signing when |
12b3b8ff SF |
246 | this function is used after 1st of session setup requests */ |
247 | ||
248 | return rc; | |
249 | } | |
1da177e4 LT |
250 | |
251 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
252 | static int | |
253 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
254 | void **request_buf /* returned */ , | |
255 | void **response_buf /* returned */ ) | |
256 | { | |
257 | int rc = 0; | |
258 | ||
259 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
260 | check for tcp and smb session status done differently | |
261 | for those three - in the calling routine */ | |
790fe579 | 262 | if (tcon) { |
bfb59820 | 263 | if (tcon->tidStatus == CifsExiting) { |
6ab16d24 SF |
264 | /* only tree disconnect, open, and write, |
265 | (and ulogoff which does not have tcon) | |
266 | are allowed as we start force umount */ | |
790fe579 | 267 | if ((smb_command != SMB_COM_WRITE_ANDX) && |
6ab16d24 SF |
268 | (smb_command != SMB_COM_OPEN_ANDX) && |
269 | (smb_command != SMB_COM_TREE_DISCONNECT)) { | |
790fe579 | 270 | cFYI(1, ("can not send cmd %d while umounting", |
6ab16d24 SF |
271 | smb_command)); |
272 | return -ENODEV; | |
273 | } | |
274 | } | |
275 | ||
790fe579 | 276 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && |
50c2f753 | 277 | (tcon->ses->server)) { |
1da177e4 | 278 | struct nls_table *nls_codepage; |
09d1db5c SF |
279 | /* Give Demultiplex thread up to 10 seconds to |
280 | reconnect, should be greater than cifs socket | |
281 | timeout which is 7 seconds */ | |
63135e08 SF |
282 | while (tcon->ses->server->tcpStatus == |
283 | CifsNeedReconnect) { | |
1da177e4 | 284 | wait_event_interruptible_timeout(tcon->ses->server->response_q, |
63135e08 SF |
285 | (tcon->ses->server->tcpStatus == |
286 | CifsGood), 10 * HZ); | |
790fe579 | 287 | if (tcon->ses->server->tcpStatus == |
09d1db5c | 288 | CifsNeedReconnect) { |
1da177e4 | 289 | /* on "soft" mounts we wait once */ |
4b18f2a9 | 290 | if (!tcon->retry || |
1da177e4 | 291 | (tcon->ses->status == CifsExiting)) { |
50c2f753 SF |
292 | cFYI(1, ("gave up waiting on " |
293 | "reconnect in smb_init")); | |
1da177e4 | 294 | return -EHOSTDOWN; |
09d1db5c SF |
295 | } /* else "hard" mount - keep retrying |
296 | until process is killed or server | |
297 | comes on-line */ | |
1da177e4 LT |
298 | } else /* TCP session is reestablished now */ |
299 | break; | |
1da177e4 | 300 | } |
1da177e4 LT |
301 | nls_codepage = load_nls_default(); |
302 | /* need to prevent multiple threads trying to | |
303 | simultaneously reconnect the same SMB session */ | |
304 | down(&tcon->ses->sesSem); | |
3b795210 | 305 | if (tcon->ses->need_reconnect) |
50c2f753 | 306 | rc = cifs_setup_session(0, tcon->ses, |
09d1db5c | 307 | nls_codepage); |
3b795210 | 308 | if (!rc && (tcon->need_reconnect)) { |
1da177e4 | 309 | mark_open_files_invalid(tcon); |
09d1db5c SF |
310 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
311 | tcon, nls_codepage); | |
1da177e4 | 312 | up(&tcon->ses->sesSem); |
3e84469d SF |
313 | /* BB FIXME add code to check if wsize needs |
314 | update due to negotiated smb buffer size | |
315 | shrinking */ | |
35028d71 | 316 | if (rc == 0) { |
1da177e4 | 317 | atomic_inc(&tconInfoReconnectCount); |
35028d71 SF |
318 | /* tell server Unix caps we support */ |
319 | if (tcon->ses->capabilities & CAP_UNIX) | |
320 | reset_cifs_unix_caps( | |
321 | 0 /* no xid */, | |
322 | tcon, | |
323 | NULL /* do not know sb */, | |
324 | NULL /* no vol info */); | |
325 | } | |
1da177e4 LT |
326 | |
327 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
50c2f753 SF |
328 | /* Removed call to reopen open files here. |
329 | It is safer (and faster) to reopen files | |
09d1db5c | 330 | one at a time as needed in read and write */ |
1da177e4 | 331 | |
50c2f753 | 332 | /* Check if handle based operation so we |
09d1db5c SF |
333 | know whether we can continue or not without |
334 | returning to caller to reset file handle */ | |
50c2f753 | 335 | switch (smb_command) { |
1da177e4 LT |
336 | case SMB_COM_READ_ANDX: |
337 | case SMB_COM_WRITE_ANDX: | |
338 | case SMB_COM_CLOSE: | |
339 | case SMB_COM_FIND_CLOSE2: | |
340 | case SMB_COM_LOCKING_ANDX: { | |
341 | unload_nls(nls_codepage); | |
342 | return -EAGAIN; | |
343 | } | |
344 | } | |
345 | } else { | |
346 | up(&tcon->ses->sesSem); | |
347 | } | |
348 | unload_nls(nls_codepage); | |
349 | ||
350 | } else { | |
351 | return -EIO; | |
352 | } | |
353 | } | |
790fe579 | 354 | if (rc) |
1da177e4 LT |
355 | return rc; |
356 | ||
357 | *request_buf = cifs_buf_get(); | |
358 | if (*request_buf == NULL) { | |
359 | /* BB should we add a retry in here if not a writepage? */ | |
360 | return -ENOMEM; | |
361 | } | |
362 | /* Although the original thought was we needed the response buf for */ | |
363 | /* potential retries of smb operations it turns out we can determine */ | |
364 | /* from the mid flags when the request buffer can be resent without */ | |
365 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 366 | if (response_buf) |
50c2f753 | 367 | *response_buf = *request_buf; |
1da177e4 LT |
368 | |
369 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 370 | wct); |
1da177e4 | 371 | |
790fe579 SF |
372 | if (tcon != NULL) |
373 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 374 | |
1da177e4 LT |
375 | return rc; |
376 | } | |
377 | ||
50c2f753 | 378 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 LT |
379 | { |
380 | int rc = -EINVAL; | |
381 | int total_size; | |
50c2f753 | 382 | char *pBCC; |
1da177e4 LT |
383 | |
384 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
385 | /* check for parm and data offset going beyond end of smb */ | |
790fe579 SF |
386 | if (pSMB->hdr.WordCount >= 10) { |
387 | if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
1da177e4 LT |
388 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { |
389 | /* check that bcc is at least as big as parms + data */ | |
390 | /* check that bcc is less than negotiated smb buffer */ | |
391 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
790fe579 | 392 | if (total_size < 512) { |
c18c842b | 393 | total_size += |
63135e08 | 394 | le16_to_cpu(pSMB->t2_rsp.DataCount); |
1da177e4 | 395 | /* BCC le converted in SendReceive */ |
50c2f753 | 396 | pBCC = (pSMB->hdr.WordCount * 2) + |
09d1db5c | 397 | sizeof(struct smb_hdr) + |
1da177e4 | 398 | (char *)pSMB; |
790fe579 | 399 | if ((total_size <= (*(u16 *)pBCC)) && |
50c2f753 | 400 | (total_size < |
1da177e4 LT |
401 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { |
402 | return 0; | |
403 | } | |
1da177e4 LT |
404 | } |
405 | } | |
406 | } | |
50c2f753 | 407 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 LT |
408 | sizeof(struct smb_t2_rsp) + 16); |
409 | return rc; | |
410 | } | |
411 | int | |
412 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
413 | { | |
414 | NEGOTIATE_REQ *pSMB; | |
415 | NEGOTIATE_RSP *pSMBr; | |
416 | int rc = 0; | |
417 | int bytes_returned; | |
3979877e | 418 | int i; |
50c2f753 | 419 | struct TCP_Server_Info *server; |
1da177e4 | 420 | u16 count; |
750d1151 | 421 | unsigned int secFlags; |
733f99ac | 422 | u16 dialect; |
1da177e4 | 423 | |
790fe579 | 424 | if (ses->server) |
1da177e4 LT |
425 | server = ses->server; |
426 | else { | |
427 | rc = -EIO; | |
428 | return rc; | |
429 | } | |
430 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
431 | (void **) &pSMB, (void **) &pSMBr); | |
432 | if (rc) | |
433 | return rc; | |
750d1151 SF |
434 | |
435 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 436 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 437 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 SF |
438 | else /* if override flags set only sign/seal OR them with global auth */ |
439 | secFlags = extended_security | ses->overrideSecFlg; | |
440 | ||
762e5ab7 | 441 | cFYI(1, ("secFlags 0x%x", secFlags)); |
f40c5628 | 442 | |
1982c344 | 443 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 444 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 445 | |
100c1ddc | 446 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 447 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d SF |
448 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
449 | cFYI(1, ("Kerberos only mechanism, enable extended security")); | |
450 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
451 | } | |
50c2f753 | 452 | |
3979877e | 453 | count = 0; |
50c2f753 | 454 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
455 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
456 | count += strlen(protocols[i].name) + 1; | |
457 | /* null at end of source and target buffers anyway */ | |
458 | } | |
1da177e4 LT |
459 | pSMB->hdr.smb_buf_length += count; |
460 | pSMB->ByteCount = cpu_to_le16(count); | |
461 | ||
462 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
463 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 464 | if (rc != 0) |
254e55ed SF |
465 | goto neg_err_exit; |
466 | ||
733f99ac | 467 | dialect = le16_to_cpu(pSMBr->DialectIndex); |
790fe579 | 468 | cFYI(1, ("Dialect: %d", dialect)); |
254e55ed | 469 | /* Check wct = 1 error case */ |
790fe579 | 470 | if ((pSMBr->hdr.WordCount < 13) || (dialect == BAD_PROT)) { |
254e55ed | 471 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 472 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
473 | could not negotiate a common dialect */ |
474 | rc = -EOPNOTSUPP; | |
475 | goto neg_err_exit; | |
50c2f753 | 476 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 477 | } else if ((pSMBr->hdr.WordCount == 13) |
733f99ac AV |
478 | && ((dialect == LANMAN_PROT) |
479 | || (dialect == LANMAN2_PROT))) { | |
b815f1e5 | 480 | __s16 tmp; |
50c2f753 | 481 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 482 | |
790fe579 | 483 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 484 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
485 | server->secType = LANMAN; |
486 | else { | |
487 | cERROR(1, ("mount failed weak security disabled" | |
488 | " in /proc/fs/cifs/SecurityFlags")); | |
3979877e SF |
489 | rc = -EOPNOTSUPP; |
490 | goto neg_err_exit; | |
50c2f753 | 491 | } |
254e55ed SF |
492 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
493 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
494 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 495 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 496 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
497 | GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey); |
498 | /* even though we do not use raw we might as well set this | |
499 | accurately, in case we ever find a need for it */ | |
790fe579 | 500 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 501 | server->max_rw = 0xFF00; |
254e55ed SF |
502 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
503 | } else { | |
eca6acf9 | 504 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
505 | server->capabilities = CAP_MPX_MODE; |
506 | } | |
b815f1e5 | 507 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 508 | if (tmp == -1) { |
25ee4a98 SF |
509 | /* OS/2 often does not set timezone therefore |
510 | * we must use server time to calc time zone. | |
b815f1e5 SF |
511 | * Could deviate slightly from the right zone. |
512 | * Smallest defined timezone difference is 15 minutes | |
513 | * (i.e. Nepal). Rounding up/down is done to match | |
514 | * this requirement. | |
25ee4a98 | 515 | */ |
b815f1e5 | 516 | int val, seconds, remain, result; |
25ee4a98 SF |
517 | struct timespec ts, utc; |
518 | utc = CURRENT_TIME; | |
519 | ts = cnvrtDosUnixTm(le16_to_cpu(rsp->SrvTime.Date), | |
520 | le16_to_cpu(rsp->SrvTime.Time)); | |
50c2f753 SF |
521 | cFYI(1, ("SrvTime %d sec since 1970 (utc: %d) diff: %d", |
522 | (int)ts.tv_sec, (int)utc.tv_sec, | |
25ee4a98 | 523 | (int)(utc.tv_sec - ts.tv_sec))); |
b815f1e5 | 524 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 525 | seconds = abs(val); |
947a5067 | 526 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 527 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 528 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 529 | result += MIN_TZ_ADJ; |
790fe579 | 530 | if (val < 0) |
ad7a2926 | 531 | result = -result; |
b815f1e5 | 532 | server->timeAdj = result; |
25ee4a98 | 533 | } else { |
b815f1e5 SF |
534 | server->timeAdj = (int)tmp; |
535 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 536 | } |
790fe579 | 537 | cFYI(1, ("server->timeAdj: %d seconds", server->timeAdj)); |
25ee4a98 | 538 | |
3979877e | 539 | |
254e55ed | 540 | /* BB get server time for time conversions and add |
50c2f753 | 541 | code to use it and timezone since this is not UTC */ |
3979877e | 542 | |
50c2f753 | 543 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 544 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
254e55ed SF |
545 | memcpy(server->cryptKey, rsp->EncryptionKey, |
546 | CIFS_CRYPTO_KEY_SIZE); | |
547 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
548 | rc = -EIO; /* need cryptkey unless plain text */ | |
549 | goto neg_err_exit; | |
550 | } | |
3979877e | 551 | |
790fe579 | 552 | cFYI(1, ("LANMAN negotiated")); |
254e55ed SF |
553 | /* we will not end up setting signing flags - as no signing |
554 | was in LANMAN and server did not return the flags on */ | |
555 | goto signing_check; | |
7c7b25bc | 556 | #else /* weak security disabled */ |
790fe579 | 557 | } else if (pSMBr->hdr.WordCount == 13) { |
50c2f753 | 558 | cERROR(1, ("mount failed, cifs module not built " |
254e55ed | 559 | "with CIFS_WEAK_PW_HASH support")); |
7c7b25bc SF |
560 | rc = -EOPNOTSUPP; |
561 | #endif /* WEAK_PW_HASH */ | |
254e55ed | 562 | goto neg_err_exit; |
790fe579 | 563 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
564 | /* unknown wct */ |
565 | rc = -EOPNOTSUPP; | |
566 | goto neg_err_exit; | |
567 | } | |
568 | /* else wct == 17 NTLM */ | |
569 | server->secMode = pSMBr->SecurityMode; | |
790fe579 SF |
570 | if ((server->secMode & SECMODE_USER) == 0) |
571 | cFYI(1, ("share mode security")); | |
bdc4bf6e | 572 | |
790fe579 | 573 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 574 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 575 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 576 | #endif /* CIFS_WEAK_PW_HASH */ |
50c2f753 | 577 | cERROR(1, ("Server requests plain text password" |
254e55ed | 578 | " but client support disabled")); |
9312f675 | 579 | |
790fe579 | 580 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 581 | server->secType = NTLMv2; |
790fe579 | 582 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 583 | server->secType = NTLM; |
790fe579 | 584 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 585 | server->secType = NTLMv2; |
a013689d SF |
586 | else if (secFlags & CIFSSEC_MAY_KRB5) |
587 | server->secType = Kerberos; | |
588 | else if (secFlags & CIFSSEC_MAY_LANMAN) | |
589 | server->secType = LANMAN; | |
590 | /* #ifdef CONFIG_CIFS_EXPERIMENTAL | |
591 | else if (secFlags & CIFSSEC_MAY_PLNTXT) | |
592 | server->secType = ?? | |
593 | #endif */ | |
594 | else { | |
595 | rc = -EOPNOTSUPP; | |
596 | cERROR(1, ("Invalid security type")); | |
597 | goto neg_err_exit; | |
598 | } | |
599 | /* else ... any others ...? */ | |
254e55ed SF |
600 | |
601 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
602 | little endian */ | |
603 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
604 | /* probably no need to store and check maxvcs */ | |
605 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 606 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 607 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
90c81e0b | 608 | cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf)); |
254e55ed SF |
609 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); |
610 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
b815f1e5 SF |
611 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
612 | server->timeAdj *= 60; | |
254e55ed SF |
613 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
614 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
615 | CIFS_CRYPTO_KEY_SIZE); | |
616 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
617 | && (pSMBr->EncryptionKeyLength == 0)) { | |
618 | /* decode security blob */ | |
619 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
620 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
621 | goto neg_err_exit; | |
622 | } | |
1da177e4 | 623 | |
254e55ed SF |
624 | /* BB might be helpful to save off the domain of server here */ |
625 | ||
50c2f753 | 626 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed SF |
627 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
628 | count = pSMBr->ByteCount; | |
e187e44e | 629 | if (count < 16) { |
254e55ed | 630 | rc = -EIO; |
e187e44e JL |
631 | goto neg_err_exit; |
632 | } | |
e7ddee90 JL |
633 | read_lock(&cifs_tcp_ses_lock); |
634 | if (server->srv_count > 1) { | |
635 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
636 | if (memcmp(server->server_GUID, |
637 | pSMBr->u.extended_response. | |
638 | GUID, 16) != 0) { | |
639 | cFYI(1, ("server UID changed")); | |
254e55ed | 640 | memcpy(server->server_GUID, |
e187e44e JL |
641 | pSMBr->u.extended_response.GUID, |
642 | 16); | |
643 | } | |
e7ddee90 JL |
644 | } else { |
645 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
646 | memcpy(server->server_GUID, |
647 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 648 | } |
e187e44e JL |
649 | |
650 | if (count == 16) { | |
651 | server->secType = RawNTLMSSP; | |
254e55ed SF |
652 | } else { |
653 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
654 | SecurityBlob, | |
655 | count - 16, | |
656 | &server->secType); | |
ef571cad | 657 | if (rc == 1) |
e545937a | 658 | rc = 0; |
ef571cad | 659 | else |
254e55ed | 660 | rc = -EINVAL; |
1da177e4 | 661 | } |
254e55ed SF |
662 | } else |
663 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
664 | ||
6344a423 | 665 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 666 | signing_check: |
6344a423 | 667 | #endif |
762e5ab7 SF |
668 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
669 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
670 | so if this is zero it means that signing is disabled */ | |
671 | cFYI(1, ("Signing disabled")); | |
abb63d6c | 672 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
762e5ab7 | 673 | cERROR(1, ("Server requires " |
7111d214 JL |
674 | "packet signing to be enabled in " |
675 | "/proc/fs/cifs/SecurityFlags.")); | |
abb63d6c SF |
676 | rc = -EOPNOTSUPP; |
677 | } | |
50c2f753 | 678 | server->secMode &= |
254e55ed | 679 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
680 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
681 | /* signing required */ | |
38c10a1d | 682 | cFYI(1, ("Must sign - secFlags 0x%x", secFlags)); |
762e5ab7 SF |
683 | if ((server->secMode & |
684 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
685 | cERROR(1, | |
686 | ("signing required but server lacks support")); | |
38c10a1d | 687 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
688 | } else |
689 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
690 | } else { | |
691 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 692 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 693 | server->secMode &= |
254e55ed | 694 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 695 | } |
50c2f753 SF |
696 | |
697 | neg_err_exit: | |
4a6d87f1 | 698 | cifs_buf_release(pSMB); |
254e55ed | 699 | |
790fe579 | 700 | cFYI(1, ("negprot rc %d", rc)); |
1da177e4 LT |
701 | return rc; |
702 | } | |
703 | ||
704 | int | |
705 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
706 | { | |
707 | struct smb_hdr *smb_buffer; | |
1da177e4 | 708 | int rc = 0; |
1da177e4 LT |
709 | |
710 | cFYI(1, ("In tree disconnect")); | |
1da177e4 | 711 | |
f1987b44 JL |
712 | /* BB: do we need to check this? These should never be NULL. */ |
713 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
714 | return -EIO; | |
1da177e4 | 715 | |
f1987b44 JL |
716 | /* |
717 | * No need to return error on this operation if tid invalidated and | |
718 | * closed on server already e.g. due to tcp session crashing. Also, | |
719 | * the tcon is no longer on the list, so no need to take lock before | |
720 | * checking this. | |
721 | */ | |
722 | if (tcon->need_reconnect) | |
50c2f753 | 723 | return 0; |
1da177e4 | 724 | |
50c2f753 | 725 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 726 | (void **)&smb_buffer); |
f1987b44 | 727 | if (rc) |
1da177e4 | 728 | return rc; |
133672ef SF |
729 | |
730 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 731 | if (rc) |
966ca923 | 732 | cFYI(1, ("Tree disconnect failed %d", rc)); |
1da177e4 | 733 | |
50c2f753 | 734 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 735 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
736 | if (rc == -EAGAIN) |
737 | rc = 0; | |
738 | ||
739 | return rc; | |
740 | } | |
741 | ||
742 | int | |
743 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
744 | { | |
1da177e4 LT |
745 | LOGOFF_ANDX_REQ *pSMB; |
746 | int rc = 0; | |
1da177e4 LT |
747 | |
748 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
3b795210 | 749 | |
14fbf50d JL |
750 | /* |
751 | * BB: do we need to check validity of ses and server? They should | |
752 | * always be valid since we have an active reference. If not, that | |
753 | * should probably be a BUG() | |
754 | */ | |
755 | if (!ses || !ses->server) | |
3b795210 SF |
756 | return -EIO; |
757 | ||
14fbf50d | 758 | down(&ses->sesSem); |
3b795210 SF |
759 | if (ses->need_reconnect) |
760 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
761 | already closed due to reconnect */ | |
1da177e4 LT |
762 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
763 | if (rc) { | |
764 | up(&ses->sesSem); | |
765 | return rc; | |
766 | } | |
767 | ||
3b795210 | 768 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 769 | |
3b795210 | 770 | if (ses->server->secMode & |
1da177e4 LT |
771 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
772 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
773 | |
774 | pSMB->hdr.Uid = ses->Suid; | |
775 | ||
776 | pSMB->AndXCommand = 0xFF; | |
133672ef | 777 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 778 | session_already_dead: |
a59c6586 | 779 | up(&ses->sesSem); |
1da177e4 LT |
780 | |
781 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 782 | since server closed smb session, no sense reporting |
1da177e4 LT |
783 | error */ |
784 | if (rc == -EAGAIN) | |
785 | rc = 0; | |
786 | return rc; | |
787 | } | |
788 | ||
2d785a50 SF |
789 | int |
790 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
791 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
792 | { | |
793 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
794 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
795 | struct unlink_psx_rq *pRqD; | |
796 | int name_len; | |
797 | int rc = 0; | |
798 | int bytes_returned = 0; | |
799 | __u16 params, param_offset, offset, byte_count; | |
800 | ||
801 | cFYI(1, ("In POSIX delete")); | |
802 | PsxDelete: | |
803 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
804 | (void **) &pSMBr); | |
805 | if (rc) | |
806 | return rc; | |
807 | ||
808 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
809 | name_len = | |
810 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
811 | PATH_MAX, nls_codepage, remap); | |
812 | name_len++; /* trailing null */ | |
813 | name_len *= 2; | |
814 | } else { /* BB add path length overrun check */ | |
815 | name_len = strnlen(fileName, PATH_MAX); | |
816 | name_len++; /* trailing null */ | |
817 | strncpy(pSMB->FileName, fileName, name_len); | |
818 | } | |
819 | ||
820 | params = 6 + name_len; | |
821 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
822 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
823 | pSMB->MaxSetupCount = 0; | |
824 | pSMB->Reserved = 0; | |
825 | pSMB->Flags = 0; | |
826 | pSMB->Timeout = 0; | |
827 | pSMB->Reserved2 = 0; | |
828 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
829 | InformationLevel) - 4; | |
830 | offset = param_offset + params; | |
831 | ||
832 | /* Setup pointer to Request Data (inode type) */ | |
833 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
834 | pRqD->type = cpu_to_le16(type); | |
835 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
836 | pSMB->DataOffset = cpu_to_le16(offset); | |
837 | pSMB->SetupCount = 1; | |
838 | pSMB->Reserved3 = 0; | |
839 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
840 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
841 | ||
842 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
843 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
844 | pSMB->ParameterCount = cpu_to_le16(params); | |
845 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
846 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
847 | pSMB->Reserved4 = 0; | |
848 | pSMB->hdr.smb_buf_length += byte_count; | |
849 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
850 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
851 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 852 | if (rc) |
2d785a50 | 853 | cFYI(1, ("Posix delete returned %d", rc)); |
2d785a50 SF |
854 | cifs_buf_release(pSMB); |
855 | ||
856 | cifs_stats_inc(&tcon->num_deletes); | |
857 | ||
858 | if (rc == -EAGAIN) | |
859 | goto PsxDelete; | |
860 | ||
861 | return rc; | |
862 | } | |
863 | ||
1da177e4 | 864 | int |
737b758c SF |
865 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
866 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
867 | { |
868 | DELETE_FILE_REQ *pSMB = NULL; | |
869 | DELETE_FILE_RSP *pSMBr = NULL; | |
870 | int rc = 0; | |
871 | int bytes_returned; | |
872 | int name_len; | |
873 | ||
874 | DelFileRetry: | |
875 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
876 | (void **) &pSMBr); | |
877 | if (rc) | |
878 | return rc; | |
879 | ||
880 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
881 | name_len = | |
50c2f753 | 882 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 883 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
884 | name_len++; /* trailing null */ |
885 | name_len *= 2; | |
09d1db5c | 886 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
887 | name_len = strnlen(fileName, PATH_MAX); |
888 | name_len++; /* trailing null */ | |
889 | strncpy(pSMB->fileName, fileName, name_len); | |
890 | } | |
891 | pSMB->SearchAttributes = | |
892 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
893 | pSMB->BufferFormat = 0x04; | |
894 | pSMB->hdr.smb_buf_length += name_len + 1; | |
895 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
896 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
897 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 898 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 899 | if (rc) |
1da177e4 | 900 | cFYI(1, ("Error in RMFile = %d", rc)); |
1da177e4 LT |
901 | |
902 | cifs_buf_release(pSMB); | |
903 | if (rc == -EAGAIN) | |
904 | goto DelFileRetry; | |
905 | ||
906 | return rc; | |
907 | } | |
908 | ||
909 | int | |
50c2f753 | 910 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 911 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
912 | { |
913 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
914 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
915 | int rc = 0; | |
916 | int bytes_returned; | |
917 | int name_len; | |
918 | ||
919 | cFYI(1, ("In CIFSSMBRmDir")); | |
920 | RmDirRetry: | |
921 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
922 | (void **) &pSMBr); | |
923 | if (rc) | |
924 | return rc; | |
925 | ||
926 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
927 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
928 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
929 | name_len++; /* trailing null */ |
930 | name_len *= 2; | |
09d1db5c | 931 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
932 | name_len = strnlen(dirName, PATH_MAX); |
933 | name_len++; /* trailing null */ | |
934 | strncpy(pSMB->DirName, dirName, name_len); | |
935 | } | |
936 | ||
937 | pSMB->BufferFormat = 0x04; | |
938 | pSMB->hdr.smb_buf_length += name_len + 1; | |
939 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
940 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
941 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 942 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 943 | if (rc) |
1da177e4 | 944 | cFYI(1, ("Error in RMDir = %d", rc)); |
1da177e4 LT |
945 | |
946 | cifs_buf_release(pSMB); | |
947 | if (rc == -EAGAIN) | |
948 | goto RmDirRetry; | |
949 | return rc; | |
950 | } | |
951 | ||
952 | int | |
953 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 954 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
955 | { |
956 | int rc = 0; | |
957 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
958 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
959 | int bytes_returned; | |
960 | int name_len; | |
961 | ||
962 | cFYI(1, ("In CIFSSMBMkDir")); | |
963 | MkDirRetry: | |
964 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
965 | (void **) &pSMBr); | |
966 | if (rc) | |
967 | return rc; | |
968 | ||
969 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 970 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 971 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
972 | name_len++; /* trailing null */ |
973 | name_len *= 2; | |
09d1db5c | 974 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
975 | name_len = strnlen(name, PATH_MAX); |
976 | name_len++; /* trailing null */ | |
977 | strncpy(pSMB->DirName, name, name_len); | |
978 | } | |
979 | ||
980 | pSMB->BufferFormat = 0x04; | |
981 | pSMB->hdr.smb_buf_length += name_len + 1; | |
982 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
983 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
984 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 985 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 986 | if (rc) |
1da177e4 | 987 | cFYI(1, ("Error in Mkdir = %d", rc)); |
a5a2b489 | 988 | |
1da177e4 LT |
989 | cifs_buf_release(pSMB); |
990 | if (rc == -EAGAIN) | |
991 | goto MkDirRetry; | |
992 | return rc; | |
993 | } | |
994 | ||
2dd29d31 SF |
995 | int |
996 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 997 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 998 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
999 | const struct nls_table *nls_codepage, int remap) |
1000 | { | |
1001 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1002 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1003 | int name_len; | |
1004 | int rc = 0; | |
1005 | int bytes_returned = 0; | |
2dd29d31 | 1006 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1007 | OPEN_PSX_REQ *pdata; |
1008 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 SF |
1009 | |
1010 | cFYI(1, ("In POSIX Create")); | |
1011 | PsxCreat: | |
1012 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1013 | (void **) &pSMBr); | |
1014 | if (rc) | |
1015 | return rc; | |
1016 | ||
1017 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1018 | name_len = | |
1019 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1020 | PATH_MAX, nls_codepage, remap); | |
1021 | name_len++; /* trailing null */ | |
1022 | name_len *= 2; | |
1023 | } else { /* BB improve the check for buffer overruns BB */ | |
1024 | name_len = strnlen(name, PATH_MAX); | |
1025 | name_len++; /* trailing null */ | |
1026 | strncpy(pSMB->FileName, name, name_len); | |
1027 | } | |
1028 | ||
1029 | params = 6 + name_len; | |
1030 | count = sizeof(OPEN_PSX_REQ); | |
1031 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1032 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1033 | pSMB->MaxSetupCount = 0; | |
1034 | pSMB->Reserved = 0; | |
1035 | pSMB->Flags = 0; | |
1036 | pSMB->Timeout = 0; | |
1037 | pSMB->Reserved2 = 0; | |
1038 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1039 | InformationLevel) - 4; |
2dd29d31 | 1040 | offset = param_offset + params; |
2dd29d31 | 1041 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1042 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1043 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1044 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1045 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1046 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1047 | pSMB->DataOffset = cpu_to_le16(offset); | |
1048 | pSMB->SetupCount = 1; | |
1049 | pSMB->Reserved3 = 0; | |
1050 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1051 | byte_count = 3 /* pad */ + params + count; | |
1052 | ||
1053 | pSMB->DataCount = cpu_to_le16(count); | |
1054 | pSMB->ParameterCount = cpu_to_le16(params); | |
1055 | pSMB->TotalDataCount = pSMB->DataCount; | |
1056 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1057 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1058 | pSMB->Reserved4 = 0; | |
50c2f753 | 1059 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1060 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1061 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1062 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1063 | if (rc) { | |
1064 | cFYI(1, ("Posix create returned %d", rc)); | |
1065 | goto psx_create_err; | |
1066 | } | |
1067 | ||
790fe579 | 1068 | cFYI(1, ("copying inode info")); |
2dd29d31 SF |
1069 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1070 | ||
1071 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1072 | rc = -EIO; /* bad smb */ | |
1073 | goto psx_create_err; | |
1074 | } | |
1075 | ||
1076 | /* copy return information to pRetData */ | |
50c2f753 | 1077 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1078 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1079 | |
2dd29d31 | 1080 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1081 | if (netfid) |
2dd29d31 SF |
1082 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1083 | /* Let caller know file was created so we can set the mode. */ | |
1084 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1085 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1086 | *pOplock |= CIFS_CREATE_ACTION; |
1087 | /* check to make sure response data is there */ | |
8f2376ad CG |
1088 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1089 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
90c81e0b | 1090 | cFYI(DBG2, ("unknown type")); |
cbac3cba | 1091 | } else { |
790fe579 | 1092 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1093 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
50c2f753 | 1094 | cERROR(1, ("Open response data too small")); |
8f2376ad | 1095 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1096 | goto psx_create_err; |
1097 | } | |
50c2f753 | 1098 | memcpy((char *) pRetData, |
cbac3cba | 1099 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1100 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1101 | } |
2dd29d31 SF |
1102 | |
1103 | psx_create_err: | |
1104 | cifs_buf_release(pSMB); | |
1105 | ||
1106 | cifs_stats_inc(&tcon->num_mkdirs); | |
1107 | ||
1108 | if (rc == -EAGAIN) | |
1109 | goto PsxCreat; | |
1110 | ||
50c2f753 | 1111 | return rc; |
2dd29d31 SF |
1112 | } |
1113 | ||
a9d02ad4 SF |
1114 | static __u16 convert_disposition(int disposition) |
1115 | { | |
1116 | __u16 ofun = 0; | |
1117 | ||
1118 | switch (disposition) { | |
1119 | case FILE_SUPERSEDE: | |
1120 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1121 | break; | |
1122 | case FILE_OPEN: | |
1123 | ofun = SMBOPEN_OAPPEND; | |
1124 | break; | |
1125 | case FILE_CREATE: | |
1126 | ofun = SMBOPEN_OCREATE; | |
1127 | break; | |
1128 | case FILE_OPEN_IF: | |
1129 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1130 | break; | |
1131 | case FILE_OVERWRITE: | |
1132 | ofun = SMBOPEN_OTRUNC; | |
1133 | break; | |
1134 | case FILE_OVERWRITE_IF: | |
1135 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1136 | break; | |
1137 | default: | |
790fe579 | 1138 | cFYI(1, ("unknown disposition %d", disposition)); |
a9d02ad4 SF |
1139 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1140 | } | |
1141 | return ofun; | |
1142 | } | |
1143 | ||
35fc37d5 JL |
1144 | static int |
1145 | access_flags_to_smbopen_mode(const int access_flags) | |
1146 | { | |
1147 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1148 | ||
1149 | if (masked_flags == GENERIC_READ) | |
1150 | return SMBOPEN_READ; | |
1151 | else if (masked_flags == GENERIC_WRITE) | |
1152 | return SMBOPEN_WRITE; | |
1153 | ||
1154 | /* just go for read/write */ | |
1155 | return SMBOPEN_READWRITE; | |
1156 | } | |
1157 | ||
a9d02ad4 SF |
1158 | int |
1159 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1160 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1161 | const int access_flags, const int create_options, __u16 *netfid, |
1162 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1163 | const struct nls_table *nls_codepage, int remap) |
1164 | { | |
1165 | int rc = -EACCES; | |
1166 | OPENX_REQ *pSMB = NULL; | |
1167 | OPENX_RSP *pSMBr = NULL; | |
1168 | int bytes_returned; | |
1169 | int name_len; | |
1170 | __u16 count; | |
1171 | ||
1172 | OldOpenRetry: | |
1173 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1174 | (void **) &pSMBr); | |
1175 | if (rc) | |
1176 | return rc; | |
1177 | ||
1178 | pSMB->AndXCommand = 0xFF; /* none */ | |
1179 | ||
1180 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1181 | count = 1; /* account for one byte pad to word boundary */ | |
1182 | name_len = | |
1183 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1184 | fileName, PATH_MAX, nls_codepage, remap); | |
1185 | name_len++; /* trailing null */ | |
1186 | name_len *= 2; | |
1187 | } else { /* BB improve check for buffer overruns BB */ | |
1188 | count = 0; /* no pad */ | |
1189 | name_len = strnlen(fileName, PATH_MAX); | |
1190 | name_len++; /* trailing null */ | |
1191 | strncpy(pSMB->fileName, fileName, name_len); | |
1192 | } | |
1193 | if (*pOplock & REQ_OPLOCK) | |
1194 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1195 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1196 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1197 | |
a9d02ad4 | 1198 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1199 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1200 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1201 | /* set file as system file if special file such | |
1202 | as fifo and server expecting SFU style and | |
1203 | no Unix extensions */ | |
1204 | ||
790fe579 SF |
1205 | if (create_options & CREATE_OPTION_SPECIAL) |
1206 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1207 | else /* BB FIXME BB */ |
1208 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1209 | |
67750fb9 JL |
1210 | if (create_options & CREATE_OPTION_READONLY) |
1211 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1212 | |
1213 | /* BB FIXME BB */ | |
50c2f753 SF |
1214 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1215 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1216 | /* BB FIXME END BB */ |
3e87d803 SF |
1217 | |
1218 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1219 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1220 | count += name_len; |
1221 | pSMB->hdr.smb_buf_length += count; | |
1222 | ||
1223 | pSMB->ByteCount = cpu_to_le16(count); | |
1224 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1225 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1226 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a9d02ad4 SF |
1227 | cifs_stats_inc(&tcon->num_opens); |
1228 | if (rc) { | |
1229 | cFYI(1, ("Error in Open = %d", rc)); | |
1230 | } else { | |
1231 | /* BB verify if wct == 15 */ | |
1232 | ||
582d21e5 | 1233 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1234 | |
1235 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1236 | /* Let caller know file was created so we can set the mode. */ | |
1237 | /* Do we care about the CreateAction in any other cases? */ | |
1238 | /* BB FIXME BB */ | |
790fe579 | 1239 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1240 | *pOplock |= CIFS_CREATE_ACTION; */ |
1241 | /* BB FIXME END */ | |
1242 | ||
790fe579 | 1243 | if (pfile_info) { |
a9d02ad4 SF |
1244 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1245 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1246 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1247 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1248 | pfile_info->Attributes = |
50c2f753 | 1249 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1250 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1251 | pfile_info->AllocationSize = |
1252 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1253 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1254 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1255 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1256 | } |
1257 | } | |
1258 | ||
1259 | cifs_buf_release(pSMB); | |
1260 | if (rc == -EAGAIN) | |
1261 | goto OldOpenRetry; | |
1262 | return rc; | |
1263 | } | |
1264 | ||
1da177e4 LT |
1265 | int |
1266 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1267 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1268 | const int access_flags, const int create_options, __u16 *netfid, |
1269 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1270 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1271 | { |
1272 | int rc = -EACCES; | |
1273 | OPEN_REQ *pSMB = NULL; | |
1274 | OPEN_RSP *pSMBr = NULL; | |
1275 | int bytes_returned; | |
1276 | int name_len; | |
1277 | __u16 count; | |
1278 | ||
1279 | openRetry: | |
1280 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1281 | (void **) &pSMBr); | |
1282 | if (rc) | |
1283 | return rc; | |
1284 | ||
1285 | pSMB->AndXCommand = 0xFF; /* none */ | |
1286 | ||
1287 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1288 | count = 1; /* account for one byte pad to word boundary */ | |
1289 | name_len = | |
b1a45695 | 1290 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1291 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1292 | name_len++; /* trailing null */ |
1293 | name_len *= 2; | |
1294 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1295 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1296 | count = 0; /* no pad */ |
1297 | name_len = strnlen(fileName, PATH_MAX); | |
1298 | name_len++; /* trailing null */ | |
1299 | pSMB->NameLength = cpu_to_le16(name_len); | |
1300 | strncpy(pSMB->fileName, fileName, name_len); | |
1301 | } | |
1302 | if (*pOplock & REQ_OPLOCK) | |
1303 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1304 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1305 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1306 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1307 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1308 | /* set file as system file if special file such |
1309 | as fifo and server expecting SFU style and | |
1310 | no Unix extensions */ | |
790fe579 | 1311 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1312 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1313 | else | |
1314 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1315 | |
1da177e4 LT |
1316 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1317 | /* but it helps speed up case sensitive checks for other | |
1318 | servers such as Samba */ | |
1319 | if (tcon->ses->capabilities & CAP_UNIX) | |
1320 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1321 | ||
67750fb9 JL |
1322 | if (create_options & CREATE_OPTION_READONLY) |
1323 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1324 | ||
1da177e4 LT |
1325 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1326 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1327 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1328 | /* BB Expirement with various impersonation levels and verify */ |
1329 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1330 | pSMB->SecurityFlags = |
1331 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1332 | ||
1333 | count += name_len; | |
1334 | pSMB->hdr.smb_buf_length += count; | |
1335 | ||
1336 | pSMB->ByteCount = cpu_to_le16(count); | |
1337 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1338 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1339 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a4544347 | 1340 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 LT |
1341 | if (rc) { |
1342 | cFYI(1, ("Error in Open = %d", rc)); | |
1343 | } else { | |
09d1db5c | 1344 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1345 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1346 | /* Let caller know file was created so we can set the mode. */ | |
1347 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1348 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1349 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1350 | if (pfile_info) { |
61e74801 SF |
1351 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1352 | 36 /* CreationTime to Attributes */); | |
1353 | /* the file_info buf is endian converted by caller */ | |
1354 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1355 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1356 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1357 | pfile_info->DeletePending = 0; | |
1da177e4 | 1358 | } |
1da177e4 | 1359 | } |
a5a2b489 | 1360 | |
1da177e4 LT |
1361 | cifs_buf_release(pSMB); |
1362 | if (rc == -EAGAIN) | |
1363 | goto openRetry; | |
1364 | return rc; | |
1365 | } | |
1366 | ||
1da177e4 | 1367 | int |
50c2f753 SF |
1368 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1369 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1370 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1371 | { |
1372 | int rc = -EACCES; | |
1373 | READ_REQ *pSMB = NULL; | |
1374 | READ_RSP *pSMBr = NULL; | |
1375 | char *pReadData = NULL; | |
bfa0d75a | 1376 | int wct; |
ec637e3f SF |
1377 | int resp_buf_type = 0; |
1378 | struct kvec iov[1]; | |
1da177e4 | 1379 | |
790fe579 SF |
1380 | cFYI(1, ("Reading %d bytes on fid %d", count, netfid)); |
1381 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
bfa0d75a | 1382 | wct = 12; |
4c3130ef | 1383 | else { |
bfa0d75a | 1384 | wct = 10; /* old style read */ |
4c3130ef SF |
1385 | if ((lseek >> 32) > 0) { |
1386 | /* can not handle this big offset for old */ | |
1387 | return -EIO; | |
1388 | } | |
1389 | } | |
1da177e4 LT |
1390 | |
1391 | *nbytes = 0; | |
ec637e3f | 1392 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1393 | if (rc) |
1394 | return rc; | |
1395 | ||
1396 | /* tcon and ses pointer are checked in smb_init */ | |
1397 | if (tcon->ses->server == NULL) | |
1398 | return -ECONNABORTED; | |
1399 | ||
ec637e3f | 1400 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1401 | pSMB->Fid = netfid; |
1402 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1403 | if (wct == 12) |
bfa0d75a | 1404 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1405 | |
1da177e4 LT |
1406 | pSMB->Remaining = 0; |
1407 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1408 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1409 | if (wct == 12) |
bfa0d75a SF |
1410 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1411 | else { | |
1412 | /* old style read */ | |
50c2f753 | 1413 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1414 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1415 | pSMBW->ByteCount = 0; |
bfa0d75a | 1416 | } |
ec637e3f SF |
1417 | |
1418 | iov[0].iov_base = (char *)pSMB; | |
1419 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
a761ac57 | 1420 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
133672ef | 1421 | &resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR); |
a4544347 | 1422 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1423 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 LT |
1424 | if (rc) { |
1425 | cERROR(1, ("Send error in read = %d", rc)); | |
1426 | } else { | |
1427 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1428 | data_length = data_length << 16; | |
1429 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1430 | *nbytes = data_length; | |
1431 | ||
1432 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1433 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1434 | || (data_length > count)) { |
50c2f753 SF |
1435 | cFYI(1, ("bad length %d for count %d", |
1436 | data_length, count)); | |
1da177e4 LT |
1437 | rc = -EIO; |
1438 | *nbytes = 0; | |
1439 | } else { | |
ec637e3f | 1440 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1441 | le16_to_cpu(pSMBr->DataOffset); |
1442 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
50c2f753 SF |
1443 | cERROR(1,("Faulting on read rc = %d",rc)); |
1444 | rc = -EFAULT; | |
26f57364 | 1445 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1446 | if (*buf) |
50c2f753 | 1447 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1448 | } |
1449 | } | |
1da177e4 | 1450 | |
4b8f930f | 1451 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1452 | if (*buf) { |
1453 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1454 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1455 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1456 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1457 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1458 | /* return buffer to caller to free */ |
1459 | *buf = iov[0].iov_base; | |
790fe579 | 1460 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1461 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1462 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1463 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1464 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1465 | |
1466 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1467 | since file handle passed in no longer valid */ |
1468 | return rc; | |
1469 | } | |
1470 | ||
ec637e3f | 1471 | |
1da177e4 LT |
1472 | int |
1473 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1474 | const int netfid, const unsigned int count, | |
1475 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1476 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1477 | { |
1478 | int rc = -EACCES; | |
1479 | WRITE_REQ *pSMB = NULL; | |
1480 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1481 | int bytes_returned, wct; |
1da177e4 LT |
1482 | __u32 bytes_sent; |
1483 | __u16 byte_count; | |
1484 | ||
61de800d | 1485 | /* cFYI(1, ("write at %lld %d bytes", offset, count));*/ |
790fe579 | 1486 | if (tcon->ses == NULL) |
1c955187 SF |
1487 | return -ECONNABORTED; |
1488 | ||
790fe579 | 1489 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1490 | wct = 14; |
4c3130ef | 1491 | else { |
1c955187 | 1492 | wct = 12; |
4c3130ef SF |
1493 | if ((offset >> 32) > 0) { |
1494 | /* can not handle big offset for old srv */ | |
1495 | return -EIO; | |
1496 | } | |
1497 | } | |
1c955187 SF |
1498 | |
1499 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1500 | (void **) &pSMBr); |
1501 | if (rc) | |
1502 | return rc; | |
1503 | /* tcon and ses pointer are checked in smb_init */ | |
1504 | if (tcon->ses->server == NULL) | |
1505 | return -ECONNABORTED; | |
1506 | ||
1507 | pSMB->AndXCommand = 0xFF; /* none */ | |
1508 | pSMB->Fid = netfid; | |
1509 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1510 | if (wct == 14) |
1c955187 | 1511 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1512 | |
1da177e4 LT |
1513 | pSMB->Reserved = 0xFFFFFFFF; |
1514 | pSMB->WriteMode = 0; | |
1515 | pSMB->Remaining = 0; | |
1516 | ||
50c2f753 | 1517 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1518 | can send more if LARGE_WRITE_X capability returned by the server and if |
1519 | our buffer is big enough or if we convert to iovecs on socket writes | |
1520 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1521 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1522 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1523 | } else { | |
1524 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1525 | & ~0xFF; | |
1526 | } | |
1527 | ||
1528 | if (bytes_sent > count) | |
1529 | bytes_sent = count; | |
1530 | pSMB->DataOffset = | |
50c2f753 | 1531 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1532 | if (buf) |
61e74801 | 1533 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1534 | else if (ubuf) { |
1535 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1536 | cifs_buf_release(pSMB); |
1537 | return -EFAULT; | |
1538 | } | |
e30dcf3a | 1539 | } else if (count != 0) { |
1da177e4 LT |
1540 | /* No buffer */ |
1541 | cifs_buf_release(pSMB); | |
1542 | return -EINVAL; | |
e30dcf3a | 1543 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1544 | if (wct == 14) |
e30dcf3a | 1545 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1546 | else /* wct == 12 */ |
e30dcf3a | 1547 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1548 | |
1da177e4 LT |
1549 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1550 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1551 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1552 | |
790fe579 | 1553 | if (wct == 14) |
1c955187 | 1554 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1555 | else { /* old style write has byte count 4 bytes earlier |
1556 | so 4 bytes pad */ | |
1557 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1558 | (struct smb_com_writex_req *)pSMB; |
1559 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1560 | } | |
1da177e4 LT |
1561 | |
1562 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1563 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1564 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 LT |
1565 | if (rc) { |
1566 | cFYI(1, ("Send error in write = %d", rc)); | |
1567 | *nbytes = 0; | |
1568 | } else { | |
1569 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1570 | *nbytes = (*nbytes) << 16; | |
1571 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1572 | } | |
1573 | ||
1574 | cifs_buf_release(pSMB); | |
1575 | ||
50c2f753 | 1576 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1577 | since file handle passed in no longer valid */ |
1578 | ||
1579 | return rc; | |
1580 | } | |
1581 | ||
d6e04ae6 SF |
1582 | int |
1583 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1584 | const int netfid, const unsigned int count, |
3e84469d SF |
1585 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1586 | int n_vec, const int long_op) | |
1da177e4 LT |
1587 | { |
1588 | int rc = -EACCES; | |
1589 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1590 | int wct; |
d6e04ae6 | 1591 | int smb_hdr_len; |
ec637e3f | 1592 | int resp_buf_type = 0; |
1da177e4 | 1593 | |
fbec9ab9 JL |
1594 | *nbytes = 0; |
1595 | ||
790fe579 | 1596 | cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count)); |
ff7feac9 | 1597 | |
4c3130ef | 1598 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1599 | wct = 14; |
4c3130ef | 1600 | } else { |
8cc64c6e | 1601 | wct = 12; |
4c3130ef SF |
1602 | if ((offset >> 32) > 0) { |
1603 | /* can not handle big offset for old srv */ | |
1604 | return -EIO; | |
1605 | } | |
1606 | } | |
8cc64c6e | 1607 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1608 | if (rc) |
1609 | return rc; | |
1da177e4 LT |
1610 | /* tcon and ses pointer are checked in smb_init */ |
1611 | if (tcon->ses->server == NULL) | |
1612 | return -ECONNABORTED; | |
1613 | ||
d6e04ae6 | 1614 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1615 | pSMB->Fid = netfid; |
1616 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1617 | if (wct == 14) |
8cc64c6e | 1618 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1619 | pSMB->Reserved = 0xFFFFFFFF; |
1620 | pSMB->WriteMode = 0; | |
1621 | pSMB->Remaining = 0; | |
d6e04ae6 | 1622 | |
1da177e4 | 1623 | pSMB->DataOffset = |
50c2f753 | 1624 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1625 | |
3e84469d SF |
1626 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1627 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1628 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1629 | if (wct == 14) |
8cc64c6e SF |
1630 | pSMB->hdr.smb_buf_length += count+1; |
1631 | else /* wct == 12 */ | |
790fe579 SF |
1632 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1633 | if (wct == 14) | |
8cc64c6e SF |
1634 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1635 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1636 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1637 | (struct smb_com_writex_req *)pSMB; |
1638 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1639 | } | |
3e84469d | 1640 | iov[0].iov_base = pSMB; |
790fe579 | 1641 | if (wct == 14) |
ec637e3f SF |
1642 | iov[0].iov_len = smb_hdr_len + 4; |
1643 | else /* wct == 12 pad bigger by four bytes */ | |
1644 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1645 | |
1da177e4 | 1646 | |
ec637e3f | 1647 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1648 | long_op); |
a4544347 | 1649 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1650 | if (rc) { |
8cc64c6e | 1651 | cFYI(1, ("Send error Write2 = %d", rc)); |
790fe579 | 1652 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1653 | /* presumably this can not happen, but best to be safe */ |
1654 | rc = -EIO; | |
d6e04ae6 | 1655 | } else { |
ad7a2926 | 1656 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1657 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1658 | *nbytes = (*nbytes) << 16; | |
1659 | *nbytes += le16_to_cpu(pSMBr->Count); | |
50c2f753 | 1660 | } |
1da177e4 | 1661 | |
4b8f930f | 1662 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1663 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1664 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1665 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1666 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1667 | |
50c2f753 | 1668 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1669 | since file handle passed in no longer valid */ |
1670 | ||
1671 | return rc; | |
1672 | } | |
d6e04ae6 SF |
1673 | |
1674 | ||
1da177e4 LT |
1675 | int |
1676 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1677 | const __u16 smb_file_id, const __u64 len, | |
1678 | const __u64 offset, const __u32 numUnlock, | |
4b18f2a9 | 1679 | const __u32 numLock, const __u8 lockType, const bool waitFlag) |
1da177e4 LT |
1680 | { |
1681 | int rc = 0; | |
1682 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1683 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1684 | int bytes_returned; |
1685 | int timeout = 0; | |
1686 | __u16 count; | |
1687 | ||
4b18f2a9 | 1688 | cFYI(1, ("CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock)); |
46810cbf SF |
1689 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1690 | ||
1da177e4 LT |
1691 | if (rc) |
1692 | return rc; | |
1693 | ||
790fe579 | 1694 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1695 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1696 | pSMB->Timeout = 0; |
4b18f2a9 | 1697 | } else if (waitFlag) { |
133672ef | 1698 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1699 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1700 | } else { | |
1701 | pSMB->Timeout = 0; | |
1702 | } | |
1703 | ||
1704 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1705 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1706 | pSMB->LockType = lockType; | |
1707 | pSMB->AndXCommand = 0xFF; /* none */ | |
1708 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1709 | ||
790fe579 | 1710 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1711 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1712 | /* BB where to store pid high? */ | |
1713 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1714 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1715 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1716 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1717 | count = sizeof(LOCKING_ANDX_RANGE); | |
1718 | } else { | |
1719 | /* oplock break */ | |
1720 | count = 0; | |
1721 | } | |
1722 | pSMB->hdr.smb_buf_length += count; | |
1723 | pSMB->ByteCount = cpu_to_le16(count); | |
1724 | ||
7ee1af76 JA |
1725 | if (waitFlag) { |
1726 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1727 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1728 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1729 | } else { |
133672ef SF |
1730 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1731 | timeout); | |
1732 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1733 | } |
a4544347 | 1734 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1735 | if (rc) |
1da177e4 | 1736 | cFYI(1, ("Send error in Lock = %d", rc)); |
1da177e4 | 1737 | |
50c2f753 | 1738 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1739 | since file handle passed in no longer valid */ |
1740 | return rc; | |
1741 | } | |
1742 | ||
08547b03 SF |
1743 | int |
1744 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1745 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1746 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1747 | const bool waitFlag) |
08547b03 SF |
1748 | { |
1749 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1750 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1751 | struct cifs_posix_lock *parm_data; |
1752 | int rc = 0; | |
3a5ff61c | 1753 | int timeout = 0; |
08547b03 | 1754 | int bytes_returned = 0; |
133672ef | 1755 | int resp_buf_type = 0; |
08547b03 | 1756 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1757 | struct kvec iov[1]; |
08547b03 SF |
1758 | |
1759 | cFYI(1, ("Posix Lock")); | |
fc94cdb9 | 1760 | |
790fe579 | 1761 | if (pLockData == NULL) |
ed5f0370 | 1762 | return -EINVAL; |
fc94cdb9 | 1763 | |
08547b03 SF |
1764 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1765 | ||
1766 | if (rc) | |
1767 | return rc; | |
1768 | ||
1769 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1770 | ||
50c2f753 | 1771 | params = 6; |
08547b03 SF |
1772 | pSMB->MaxSetupCount = 0; |
1773 | pSMB->Reserved = 0; | |
1774 | pSMB->Flags = 0; | |
08547b03 SF |
1775 | pSMB->Reserved2 = 0; |
1776 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1777 | offset = param_offset + params; | |
1778 | ||
08547b03 SF |
1779 | count = sizeof(struct cifs_posix_lock); |
1780 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1781 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1782 | pSMB->SetupCount = 1; |
1783 | pSMB->Reserved3 = 0; | |
790fe579 | 1784 | if (get_flag) |
08547b03 SF |
1785 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1786 | else | |
1787 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1788 | byte_count = 3 /* pad */ + params + count; | |
1789 | pSMB->DataCount = cpu_to_le16(count); | |
1790 | pSMB->ParameterCount = cpu_to_le16(params); | |
1791 | pSMB->TotalDataCount = pSMB->DataCount; | |
1792 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1793 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1794 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1795 | (((char *) &pSMB->hdr.Protocol) + offset); |
1796 | ||
1797 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1798 | if (waitFlag) { |
133672ef | 1799 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1800 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1801 | pSMB->Timeout = cpu_to_le32(-1); |
1802 | } else | |
1803 | pSMB->Timeout = 0; | |
1804 | ||
08547b03 | 1805 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1806 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1807 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1808 | |
1809 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1810 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1811 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1812 | pSMB->Reserved4 = 0; | |
1813 | pSMB->hdr.smb_buf_length += byte_count; | |
1814 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1815 | if (waitFlag) { |
1816 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1817 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1818 | } else { | |
133672ef SF |
1819 | iov[0].iov_base = (char *)pSMB; |
1820 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1821 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1822 | &resp_buf_type, timeout); | |
1823 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1824 | not try to free it twice below on exit */ | |
1825 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1826 | } |
1827 | ||
08547b03 SF |
1828 | if (rc) { |
1829 | cFYI(1, ("Send error in Posix Lock = %d", rc)); | |
fc94cdb9 SF |
1830 | } else if (get_flag) { |
1831 | /* lock structure can be returned on get */ | |
1832 | __u16 data_offset; | |
1833 | __u16 data_count; | |
1834 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1835 | ||
1836 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1837 | rc = -EIO; /* bad smb */ | |
1838 | goto plk_err_exit; | |
1839 | } | |
fc94cdb9 SF |
1840 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1841 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1842 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1843 | rc = -EIO; |
1844 | goto plk_err_exit; | |
1845 | } | |
1846 | parm_data = (struct cifs_posix_lock *) | |
1847 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
790fe579 | 1848 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1849 | pLockData->fl_type = F_UNLCK; |
08547b03 | 1850 | } |
50c2f753 | 1851 | |
fc94cdb9 | 1852 | plk_err_exit: |
08547b03 SF |
1853 | if (pSMB) |
1854 | cifs_small_buf_release(pSMB); | |
1855 | ||
133672ef SF |
1856 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1857 | cifs_small_buf_release(iov[0].iov_base); | |
1858 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1859 | cifs_buf_release(iov[0].iov_base); | |
1860 | ||
08547b03 SF |
1861 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1862 | since file handle passed in no longer valid */ | |
1863 | ||
1864 | return rc; | |
1865 | } | |
1866 | ||
1867 | ||
1da177e4 LT |
1868 | int |
1869 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1870 | { | |
1871 | int rc = 0; | |
1872 | CLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
1873 | cFYI(1, ("In CIFSSMBClose")); |
1874 | ||
1875 | /* do not retry on dead session on close */ | |
1876 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1877 | if (rc == -EAGAIN) |
1da177e4 LT |
1878 | return 0; |
1879 | if (rc) | |
1880 | return rc; | |
1881 | ||
1da177e4 | 1882 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1883 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1884 | pSMB->ByteCount = 0; |
133672ef | 1885 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1886 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1887 | if (rc) { |
790fe579 | 1888 | if (rc != -EINTR) { |
1da177e4 LT |
1889 | /* EINTR is expected when user ctl-c to kill app */ |
1890 | cERROR(1, ("Send error in Close = %d", rc)); | |
1891 | } | |
1892 | } | |
1893 | ||
1da177e4 | 1894 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1895 | if (rc == -EAGAIN) |
1da177e4 LT |
1896 | rc = 0; |
1897 | ||
1898 | return rc; | |
1899 | } | |
1900 | ||
b298f223 SF |
1901 | int |
1902 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1903 | { | |
1904 | int rc = 0; | |
1905 | FLUSH_REQ *pSMB = NULL; | |
1906 | cFYI(1, ("In CIFSSMBFlush")); | |
1907 | ||
1908 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
1909 | if (rc) | |
1910 | return rc; | |
1911 | ||
1912 | pSMB->FileID = (__u16) smb_file_id; | |
1913 | pSMB->ByteCount = 0; | |
1914 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1915 | cifs_stats_inc(&tcon->num_flushes); | |
1916 | if (rc) | |
1917 | cERROR(1, ("Send error in Flush = %d", rc)); | |
1918 | ||
1919 | return rc; | |
1920 | } | |
1921 | ||
1da177e4 LT |
1922 | int |
1923 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1924 | const char *fromName, const char *toName, | |
737b758c | 1925 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1926 | { |
1927 | int rc = 0; | |
1928 | RENAME_REQ *pSMB = NULL; | |
1929 | RENAME_RSP *pSMBr = NULL; | |
1930 | int bytes_returned; | |
1931 | int name_len, name_len2; | |
1932 | __u16 count; | |
1933 | ||
1934 | cFYI(1, ("In CIFSSMBRename")); | |
1935 | renameRetry: | |
1936 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1937 | (void **) &pSMBr); | |
1938 | if (rc) | |
1939 | return rc; | |
1940 | ||
1941 | pSMB->BufferFormat = 0x04; | |
1942 | pSMB->SearchAttributes = | |
1943 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1944 | ATTR_DIRECTORY); | |
1945 | ||
1946 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1947 | name_len = | |
50c2f753 | 1948 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1949 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1950 | name_len++; /* trailing null */ |
1951 | name_len *= 2; | |
1952 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1953 | /* protocol requires ASCII signature byte on Unicode string */ | |
1954 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1955 | name_len2 = | |
582d21e5 | 1956 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1957 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1958 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1959 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 1960 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
1961 | name_len = strnlen(fromName, PATH_MAX); |
1962 | name_len++; /* trailing null */ | |
1963 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1964 | name_len2 = strnlen(toName, PATH_MAX); | |
1965 | name_len2++; /* trailing null */ | |
1966 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1967 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1968 | name_len2++; /* trailing null */ | |
1969 | name_len2++; /* signature byte */ | |
1970 | } | |
1971 | ||
1972 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1973 | pSMB->hdr.smb_buf_length += count; | |
1974 | pSMB->ByteCount = cpu_to_le16(count); | |
1975 | ||
1976 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1977 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1978 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 1979 | if (rc) |
1da177e4 | 1980 | cFYI(1, ("Send error in rename = %d", rc)); |
1da177e4 | 1981 | |
1da177e4 LT |
1982 | cifs_buf_release(pSMB); |
1983 | ||
1984 | if (rc == -EAGAIN) | |
1985 | goto renameRetry; | |
1986 | ||
1987 | return rc; | |
1988 | } | |
1989 | ||
50c2f753 | 1990 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 1991 | int netfid, const char *target_name, |
50c2f753 | 1992 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1993 | { |
1994 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1995 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 1996 | struct set_file_rename *rename_info; |
1da177e4 LT |
1997 | char *data_offset; |
1998 | char dummy_string[30]; | |
1999 | int rc = 0; | |
2000 | int bytes_returned = 0; | |
2001 | int len_of_str; | |
2002 | __u16 params, param_offset, offset, count, byte_count; | |
2003 | ||
2004 | cFYI(1, ("Rename to File by handle")); | |
2005 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
2006 | (void **) &pSMBr); | |
2007 | if (rc) | |
2008 | return rc; | |
2009 | ||
2010 | params = 6; | |
2011 | pSMB->MaxSetupCount = 0; | |
2012 | pSMB->Reserved = 0; | |
2013 | pSMB->Flags = 0; | |
2014 | pSMB->Timeout = 0; | |
2015 | pSMB->Reserved2 = 0; | |
2016 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2017 | offset = param_offset + params; | |
2018 | ||
2019 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2020 | rename_info = (struct set_file_rename *) data_offset; | |
2021 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2022 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2023 | pSMB->SetupCount = 1; |
2024 | pSMB->Reserved3 = 0; | |
2025 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2026 | byte_count = 3 /* pad */ + params; | |
2027 | pSMB->ParameterCount = cpu_to_le16(params); | |
2028 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2029 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2030 | pSMB->DataOffset = cpu_to_le16(offset); | |
2031 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2032 | rename_info->overwrite = cpu_to_le32(1); | |
2033 | rename_info->root_fid = 0; | |
2034 | /* unicode only call */ | |
790fe579 | 2035 | if (target_name == NULL) { |
50c2f753 SF |
2036 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2037 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2038 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2039 | } else { |
b1a45695 | 2040 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2041 | target_name, PATH_MAX, nls_codepage, |
2042 | remap); | |
1da177e4 LT |
2043 | } |
2044 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2045 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2046 | byte_count += count; |
2047 | pSMB->DataCount = cpu_to_le16(count); | |
2048 | pSMB->TotalDataCount = pSMB->DataCount; | |
2049 | pSMB->Fid = netfid; | |
2050 | pSMB->InformationLevel = | |
2051 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2052 | pSMB->Reserved4 = 0; | |
2053 | pSMB->hdr.smb_buf_length += byte_count; | |
2054 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2055 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2056 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2057 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2058 | if (rc) |
790fe579 | 2059 | cFYI(1, ("Send error in Rename (by file handle) = %d", rc)); |
a5a2b489 | 2060 | |
1da177e4 LT |
2061 | cifs_buf_release(pSMB); |
2062 | ||
2063 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2064 | since file handle passed in no longer valid */ | |
2065 | ||
2066 | return rc; | |
2067 | } | |
2068 | ||
2069 | int | |
50c2f753 SF |
2070 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2071 | const __u16 target_tid, const char *toName, const int flags, | |
2072 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2073 | { |
2074 | int rc = 0; | |
2075 | COPY_REQ *pSMB = NULL; | |
2076 | COPY_RSP *pSMBr = NULL; | |
2077 | int bytes_returned; | |
2078 | int name_len, name_len2; | |
2079 | __u16 count; | |
2080 | ||
2081 | cFYI(1, ("In CIFSSMBCopy")); | |
2082 | copyRetry: | |
2083 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2084 | (void **) &pSMBr); | |
2085 | if (rc) | |
2086 | return rc; | |
2087 | ||
2088 | pSMB->BufferFormat = 0x04; | |
2089 | pSMB->Tid2 = target_tid; | |
2090 | ||
2091 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2092 | ||
2093 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2094 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2095 | fromName, PATH_MAX, nls_codepage, |
2096 | remap); | |
1da177e4 LT |
2097 | name_len++; /* trailing null */ |
2098 | name_len *= 2; | |
2099 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2100 | /* protocol requires ASCII signature byte on Unicode string */ | |
2101 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2102 | name_len2 = |
2103 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2104 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2105 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2106 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2107 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2108 | name_len = strnlen(fromName, PATH_MAX); |
2109 | name_len++; /* trailing null */ | |
2110 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2111 | name_len2 = strnlen(toName, PATH_MAX); | |
2112 | name_len2++; /* trailing null */ | |
2113 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2114 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2115 | name_len2++; /* trailing null */ | |
2116 | name_len2++; /* signature byte */ | |
2117 | } | |
2118 | ||
2119 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2120 | pSMB->hdr.smb_buf_length += count; | |
2121 | pSMB->ByteCount = cpu_to_le16(count); | |
2122 | ||
2123 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2124 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2125 | if (rc) { | |
2126 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
2127 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
2128 | } | |
0d817bc0 | 2129 | cifs_buf_release(pSMB); |
1da177e4 LT |
2130 | |
2131 | if (rc == -EAGAIN) | |
2132 | goto copyRetry; | |
2133 | ||
2134 | return rc; | |
2135 | } | |
2136 | ||
2137 | int | |
2138 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2139 | const char *fromName, const char *toName, | |
2140 | const struct nls_table *nls_codepage) | |
2141 | { | |
2142 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2143 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2144 | char *data_offset; | |
2145 | int name_len; | |
2146 | int name_len_target; | |
2147 | int rc = 0; | |
2148 | int bytes_returned = 0; | |
2149 | __u16 params, param_offset, offset, byte_count; | |
2150 | ||
2151 | cFYI(1, ("In Symlink Unix style")); | |
2152 | createSymLinkRetry: | |
2153 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2154 | (void **) &pSMBr); | |
2155 | if (rc) | |
2156 | return rc; | |
2157 | ||
2158 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2159 | name_len = | |
e89dc920 | 2160 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2161 | /* find define for this maxpathcomponent */ |
2162 | , nls_codepage); | |
2163 | name_len++; /* trailing null */ | |
2164 | name_len *= 2; | |
2165 | ||
50c2f753 | 2166 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2167 | name_len = strnlen(fromName, PATH_MAX); |
2168 | name_len++; /* trailing null */ | |
2169 | strncpy(pSMB->FileName, fromName, name_len); | |
2170 | } | |
2171 | params = 6 + name_len; | |
2172 | pSMB->MaxSetupCount = 0; | |
2173 | pSMB->Reserved = 0; | |
2174 | pSMB->Flags = 0; | |
2175 | pSMB->Timeout = 0; | |
2176 | pSMB->Reserved2 = 0; | |
2177 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2178 | InformationLevel) - 4; |
1da177e4 LT |
2179 | offset = param_offset + params; |
2180 | ||
2181 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2182 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2183 | name_len_target = | |
e89dc920 | 2184 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2185 | /* find define for this maxpathcomponent */ |
2186 | , nls_codepage); | |
2187 | name_len_target++; /* trailing null */ | |
2188 | name_len_target *= 2; | |
50c2f753 | 2189 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2190 | name_len_target = strnlen(toName, PATH_MAX); |
2191 | name_len_target++; /* trailing null */ | |
2192 | strncpy(data_offset, toName, name_len_target); | |
2193 | } | |
2194 | ||
2195 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2196 | /* BB find exact max on data count below from sess */ | |
2197 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2198 | pSMB->SetupCount = 1; | |
2199 | pSMB->Reserved3 = 0; | |
2200 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2201 | byte_count = 3 /* pad */ + params + name_len_target; | |
2202 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2203 | pSMB->ParameterCount = cpu_to_le16(params); | |
2204 | pSMB->TotalDataCount = pSMB->DataCount; | |
2205 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2206 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2207 | pSMB->DataOffset = cpu_to_le16(offset); | |
2208 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2209 | pSMB->Reserved4 = 0; | |
2210 | pSMB->hdr.smb_buf_length += byte_count; | |
2211 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2212 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2213 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2214 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2215 | if (rc) |
2d785a50 | 2216 | cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc)); |
1da177e4 | 2217 | |
0d817bc0 | 2218 | cifs_buf_release(pSMB); |
1da177e4 LT |
2219 | |
2220 | if (rc == -EAGAIN) | |
2221 | goto createSymLinkRetry; | |
2222 | ||
2223 | return rc; | |
2224 | } | |
2225 | ||
2226 | int | |
2227 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2228 | const char *fromName, const char *toName, | |
737b758c | 2229 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2230 | { |
2231 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2232 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2233 | char *data_offset; | |
2234 | int name_len; | |
2235 | int name_len_target; | |
2236 | int rc = 0; | |
2237 | int bytes_returned = 0; | |
2238 | __u16 params, param_offset, offset, byte_count; | |
2239 | ||
2240 | cFYI(1, ("In Create Hard link Unix style")); | |
2241 | createHardLinkRetry: | |
2242 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2243 | (void **) &pSMBr); | |
2244 | if (rc) | |
2245 | return rc; | |
2246 | ||
2247 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2248 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2249 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2250 | name_len++; /* trailing null */ |
2251 | name_len *= 2; | |
2252 | ||
50c2f753 | 2253 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2254 | name_len = strnlen(toName, PATH_MAX); |
2255 | name_len++; /* trailing null */ | |
2256 | strncpy(pSMB->FileName, toName, name_len); | |
2257 | } | |
2258 | params = 6 + name_len; | |
2259 | pSMB->MaxSetupCount = 0; | |
2260 | pSMB->Reserved = 0; | |
2261 | pSMB->Flags = 0; | |
2262 | pSMB->Timeout = 0; | |
2263 | pSMB->Reserved2 = 0; | |
2264 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2265 | InformationLevel) - 4; |
1da177e4 LT |
2266 | offset = param_offset + params; |
2267 | ||
2268 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2269 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2270 | name_len_target = | |
b1a45695 | 2271 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2272 | nls_codepage, remap); |
1da177e4 LT |
2273 | name_len_target++; /* trailing null */ |
2274 | name_len_target *= 2; | |
50c2f753 | 2275 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2276 | name_len_target = strnlen(fromName, PATH_MAX); |
2277 | name_len_target++; /* trailing null */ | |
2278 | strncpy(data_offset, fromName, name_len_target); | |
2279 | } | |
2280 | ||
2281 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2282 | /* BB find exact max on data count below from sess*/ | |
2283 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2284 | pSMB->SetupCount = 1; | |
2285 | pSMB->Reserved3 = 0; | |
2286 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2287 | byte_count = 3 /* pad */ + params + name_len_target; | |
2288 | pSMB->ParameterCount = cpu_to_le16(params); | |
2289 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2290 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2291 | pSMB->TotalDataCount = pSMB->DataCount; | |
2292 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2293 | pSMB->DataOffset = cpu_to_le16(offset); | |
2294 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2295 | pSMB->Reserved4 = 0; | |
2296 | pSMB->hdr.smb_buf_length += byte_count; | |
2297 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2298 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2299 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2300 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2301 | if (rc) |
1da177e4 | 2302 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); |
1da177e4 LT |
2303 | |
2304 | cifs_buf_release(pSMB); | |
2305 | if (rc == -EAGAIN) | |
2306 | goto createHardLinkRetry; | |
2307 | ||
2308 | return rc; | |
2309 | } | |
2310 | ||
2311 | int | |
2312 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2313 | const char *fromName, const char *toName, | |
737b758c | 2314 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2315 | { |
2316 | int rc = 0; | |
2317 | NT_RENAME_REQ *pSMB = NULL; | |
2318 | RENAME_RSP *pSMBr = NULL; | |
2319 | int bytes_returned; | |
2320 | int name_len, name_len2; | |
2321 | __u16 count; | |
2322 | ||
2323 | cFYI(1, ("In CIFSCreateHardLink")); | |
2324 | winCreateHardLinkRetry: | |
2325 | ||
2326 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2327 | (void **) &pSMBr); | |
2328 | if (rc) | |
2329 | return rc; | |
2330 | ||
2331 | pSMB->SearchAttributes = | |
2332 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2333 | ATTR_DIRECTORY); | |
2334 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2335 | pSMB->ClusterCount = 0; | |
2336 | ||
2337 | pSMB->BufferFormat = 0x04; | |
2338 | ||
2339 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2340 | name_len = | |
b1a45695 | 2341 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2342 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2343 | name_len++; /* trailing null */ |
2344 | name_len *= 2; | |
fcc7c09d JL |
2345 | |
2346 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2347 | pSMB->OldFileName[name_len] = 0x04; | |
2348 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2349 | name_len2 = |
50c2f753 | 2350 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2351 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2352 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2353 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2354 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2355 | name_len = strnlen(fromName, PATH_MAX); |
2356 | name_len++; /* trailing null */ | |
2357 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2358 | name_len2 = strnlen(toName, PATH_MAX); | |
2359 | name_len2++; /* trailing null */ | |
2360 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2361 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2362 | name_len2++; /* trailing null */ | |
2363 | name_len2++; /* signature byte */ | |
2364 | } | |
2365 | ||
2366 | count = 1 /* string type byte */ + name_len + name_len2; | |
2367 | pSMB->hdr.smb_buf_length += count; | |
2368 | pSMB->ByteCount = cpu_to_le16(count); | |
2369 | ||
2370 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2371 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2372 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2373 | if (rc) |
1da177e4 | 2374 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); |
ad7a2926 | 2375 | |
1da177e4 LT |
2376 | cifs_buf_release(pSMB); |
2377 | if (rc == -EAGAIN) | |
2378 | goto winCreateHardLinkRetry; | |
2379 | ||
2380 | return rc; | |
2381 | } | |
2382 | ||
2383 | int | |
2384 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2385 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2386 | const struct nls_table *nls_codepage) |
2387 | { | |
2388 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2389 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2390 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2391 | int rc = 0; | |
2392 | int bytes_returned; | |
2393 | int name_len; | |
2394 | __u16 params, byte_count; | |
460b9696 | 2395 | char *data_start; |
1da177e4 LT |
2396 | |
2397 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
2398 | ||
2399 | querySymLinkRetry: | |
2400 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2401 | (void **) &pSMBr); | |
2402 | if (rc) | |
2403 | return rc; | |
2404 | ||
2405 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2406 | name_len = | |
50c2f753 SF |
2407 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2408 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2409 | name_len++; /* trailing null */ |
2410 | name_len *= 2; | |
50c2f753 | 2411 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2412 | name_len = strnlen(searchName, PATH_MAX); |
2413 | name_len++; /* trailing null */ | |
2414 | strncpy(pSMB->FileName, searchName, name_len); | |
2415 | } | |
2416 | ||
2417 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2418 | pSMB->TotalDataCount = 0; | |
2419 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2420 | /* BB find exact max data count below from sess structure BB */ | |
2421 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2422 | pSMB->MaxSetupCount = 0; | |
2423 | pSMB->Reserved = 0; | |
2424 | pSMB->Flags = 0; | |
2425 | pSMB->Timeout = 0; | |
2426 | pSMB->Reserved2 = 0; | |
2427 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2428 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2429 | pSMB->DataCount = 0; |
2430 | pSMB->DataOffset = 0; | |
2431 | pSMB->SetupCount = 1; | |
2432 | pSMB->Reserved3 = 0; | |
2433 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2434 | byte_count = params + 1 /* pad */ ; | |
2435 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2436 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2437 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2438 | pSMB->Reserved4 = 0; | |
2439 | pSMB->hdr.smb_buf_length += byte_count; | |
2440 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2441 | ||
2442 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2443 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2444 | if (rc) { | |
2445 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
2446 | } else { | |
2447 | /* decode response */ | |
2448 | ||
2449 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2450 | /* BB also check enough total bytes returned */ |
460b9696 JL |
2451 | if (rc || (pSMBr->ByteCount < 2)) |
2452 | rc = -EIO; | |
1da177e4 | 2453 | else { |
460b9696 JL |
2454 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2455 | ||
2456 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2457 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2458 | |
737b758c | 2459 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2460 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
460b9696 JL |
2461 | pSMBr->hdr.Flags2 & |
2462 | SMBFLG2_UNICODE, | |
2463 | nls_codepage); | |
2464 | if (!symlinkinfo) | |
2465 | rc = -ENOMEM; | |
1da177e4 LT |
2466 | } |
2467 | } | |
2468 | cifs_buf_release(pSMB); | |
2469 | if (rc == -EAGAIN) | |
2470 | goto querySymLinkRetry; | |
2471 | return rc; | |
2472 | } | |
2473 | ||
c9489779 | 2474 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
2475 | /* Initialize NT TRANSACT SMB into small smb request buffer. |
2476 | This assumes that all NT TRANSACTS that we init here have | |
2477 | total parm and data under about 400 bytes (to fit in small cifs | |
2478 | buffer size), which is the case so far, it easily fits. NB: | |
2479 | Setup words themselves and ByteCount | |
2480 | MaxSetupCount (size of returned setup area) and | |
2481 | MaxParameterCount (returned parms size) must be set by caller */ | |
50c2f753 | 2482 | static int |
b9c7a2bb | 2483 | smb_init_nttransact(const __u16 sub_command, const int setup_count, |
0a4b92c0 | 2484 | const int parm_len, struct cifsTconInfo *tcon, |
50c2f753 | 2485 | void **ret_buf) |
0a4b92c0 SF |
2486 | { |
2487 | int rc; | |
2488 | __u32 temp_offset; | |
50c2f753 | 2489 | struct smb_com_ntransact_req *pSMB; |
0a4b92c0 SF |
2490 | |
2491 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2492 | (void **)&pSMB); | |
2493 | if (rc) | |
2494 | return rc; | |
2495 | *ret_buf = (void *)pSMB; | |
2496 | pSMB->Reserved = 0; | |
2497 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2498 | pSMB->TotalDataCount = 0; | |
2499 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2500 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2501 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2502 | pSMB->DataCount = pSMB->TotalDataCount; | |
2503 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2504 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2505 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2506 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2507 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2508 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2509 | return 0; | |
2510 | } | |
2511 | ||
2512 | static int | |
50c2f753 | 2513 | validate_ntransact(char *buf, char **ppparm, char **ppdata, |
b9c7a2bb | 2514 | __u32 *pparmlen, __u32 *pdatalen) |
0a4b92c0 | 2515 | { |
50c2f753 | 2516 | char *end_of_smb; |
0a4b92c0 | 2517 | __u32 data_count, data_offset, parm_count, parm_offset; |
50c2f753 | 2518 | struct smb_com_ntransact_rsp *pSMBr; |
0a4b92c0 | 2519 | |
630f3f0c SF |
2520 | *pdatalen = 0; |
2521 | *pparmlen = 0; | |
2522 | ||
790fe579 | 2523 | if (buf == NULL) |
0a4b92c0 SF |
2524 | return -EINVAL; |
2525 | ||
2526 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2527 | ||
2528 | /* ByteCount was converted from little endian in SendReceive */ | |
50c2f753 | 2529 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + |
0a4b92c0 SF |
2530 | (char *)&pSMBr->ByteCount; |
2531 | ||
0a4b92c0 SF |
2532 | data_offset = le32_to_cpu(pSMBr->DataOffset); |
2533 | data_count = le32_to_cpu(pSMBr->DataCount); | |
50c2f753 | 2534 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
0a4b92c0 SF |
2535 | parm_count = le32_to_cpu(pSMBr->ParameterCount); |
2536 | ||
2537 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2538 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2539 | ||
2540 | /* should we also check that parm and data areas do not overlap? */ | |
790fe579 SF |
2541 | if (*ppparm > end_of_smb) { |
2542 | cFYI(1, ("parms start after end of smb")); | |
0a4b92c0 | 2543 | return -EINVAL; |
790fe579 SF |
2544 | } else if (parm_count + *ppparm > end_of_smb) { |
2545 | cFYI(1, ("parm end after end of smb")); | |
0a4b92c0 | 2546 | return -EINVAL; |
790fe579 SF |
2547 | } else if (*ppdata > end_of_smb) { |
2548 | cFYI(1, ("data starts after end of smb")); | |
0a4b92c0 | 2549 | return -EINVAL; |
790fe579 | 2550 | } else if (data_count + *ppdata > end_of_smb) { |
26f57364 | 2551 | cFYI(1, ("data %p + count %d (%p) ends after end of smb %p start %p", |
50c2f753 SF |
2552 | *ppdata, data_count, (data_count + *ppdata), |
2553 | end_of_smb, pSMBr)); | |
0a4b92c0 | 2554 | return -EINVAL; |
790fe579 SF |
2555 | } else if (parm_count + data_count > pSMBr->ByteCount) { |
2556 | cFYI(1, ("parm count and data count larger than SMB")); | |
0a4b92c0 SF |
2557 | return -EINVAL; |
2558 | } | |
630f3f0c SF |
2559 | *pdatalen = data_count; |
2560 | *pparmlen = parm_count; | |
0a4b92c0 SF |
2561 | return 0; |
2562 | } | |
c9489779 | 2563 | #endif /* CIFS_EXPERIMENTAL */ |
0a4b92c0 | 2564 | |
1da177e4 LT |
2565 | int |
2566 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2567 | const unsigned char *searchName, | |
50c2f753 | 2568 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2569 | const struct nls_table *nls_codepage) |
2570 | { | |
2571 | int rc = 0; | |
2572 | int bytes_returned; | |
2573 | int name_len; | |
50c2f753 SF |
2574 | struct smb_com_transaction_ioctl_req *pSMB; |
2575 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 LT |
2576 | |
2577 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
2578 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2579 | (void **) &pSMBr); | |
2580 | if (rc) | |
2581 | return rc; | |
2582 | ||
2583 | pSMB->TotalParameterCount = 0 ; | |
2584 | pSMB->TotalDataCount = 0; | |
2585 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2586 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2587 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2588 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2589 | pSMB->MaxSetupCount = 4; |
2590 | pSMB->Reserved = 0; | |
2591 | pSMB->ParameterOffset = 0; | |
2592 | pSMB->DataCount = 0; | |
2593 | pSMB->DataOffset = 0; | |
2594 | pSMB->SetupCount = 4; | |
2595 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2596 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2597 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2598 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2599 | pSMB->IsRootFlag = 0; | |
2600 | pSMB->Fid = fid; /* file handle always le */ | |
2601 | pSMB->ByteCount = 0; | |
2602 | ||
2603 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2604 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2605 | if (rc) { | |
2606 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
2607 | } else { /* decode response */ | |
2608 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2609 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
2610 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) | |
2611 | /* BB also check enough total bytes returned */ | |
2612 | rc = -EIO; /* bad smb */ | |
2613 | else { | |
790fe579 | 2614 | if (data_count && (data_count < 2048)) { |
50c2f753 | 2615 | char *end_of_smb = 2 /* sizeof byte count */ + |
0a4b92c0 SF |
2616 | pSMBr->ByteCount + |
2617 | (char *)&pSMBr->ByteCount; | |
1da177e4 | 2618 | |
50c2f753 SF |
2619 | struct reparse_data *reparse_buf = |
2620 | (struct reparse_data *) | |
2621 | ((char *)&pSMBr->hdr.Protocol | |
2622 | + data_offset); | |
790fe579 | 2623 | if ((char *)reparse_buf >= end_of_smb) { |
1da177e4 LT |
2624 | rc = -EIO; |
2625 | goto qreparse_out; | |
2626 | } | |
790fe579 | 2627 | if ((reparse_buf->LinkNamesBuf + |
1da177e4 LT |
2628 | reparse_buf->TargetNameOffset + |
2629 | reparse_buf->TargetNameLen) > | |
2630 | end_of_smb) { | |
26f57364 | 2631 | cFYI(1, ("reparse buf beyond SMB")); |
1da177e4 LT |
2632 | rc = -EIO; |
2633 | goto qreparse_out; | |
2634 | } | |
50c2f753 | 2635 | |
1da177e4 LT |
2636 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2637 | name_len = UniStrnlen((wchar_t *) | |
50c2f753 SF |
2638 | (reparse_buf->LinkNamesBuf + |
2639 | reparse_buf->TargetNameOffset), | |
2640 | min(buflen/2, | |
2641 | reparse_buf->TargetNameLen / 2)); | |
1da177e4 | 2642 | cifs_strfromUCS_le(symlinkinfo, |
50c2f753 | 2643 | (__le16 *) (reparse_buf->LinkNamesBuf + |
1da177e4 LT |
2644 | reparse_buf->TargetNameOffset), |
2645 | name_len, nls_codepage); | |
2646 | } else { /* ASCII names */ | |
50c2f753 SF |
2647 | strncpy(symlinkinfo, |
2648 | reparse_buf->LinkNamesBuf + | |
2649 | reparse_buf->TargetNameOffset, | |
2650 | min_t(const int, buflen, | |
2651 | reparse_buf->TargetNameLen)); | |
1da177e4 LT |
2652 | } |
2653 | } else { | |
2654 | rc = -EIO; | |
63135e08 SF |
2655 | cFYI(1, ("Invalid return data count on " |
2656 | "get reparse info ioctl")); | |
1da177e4 LT |
2657 | } |
2658 | symlinkinfo[buflen] = 0; /* just in case so the caller | |
2659 | does not go off the end of the buffer */ | |
50c2f753 | 2660 | cFYI(1, ("readlink result - %s", symlinkinfo)); |
1da177e4 LT |
2661 | } |
2662 | } | |
2663 | qreparse_out: | |
4a6d87f1 | 2664 | cifs_buf_release(pSMB); |
1da177e4 LT |
2665 | |
2666 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2667 | since file handle passed in no longer valid */ | |
2668 | ||
2669 | return rc; | |
2670 | } | |
2671 | ||
2672 | #ifdef CONFIG_CIFS_POSIX | |
2673 | ||
2674 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2675 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2676 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2677 | { |
2678 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2679 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2680 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2681 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
1da177e4 LT |
2682 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ |
2683 | ||
2684 | return; | |
2685 | } | |
2686 | ||
2687 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2688 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2689 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2690 | { |
2691 | int size = 0; | |
2692 | int i; | |
2693 | __u16 count; | |
50c2f753 SF |
2694 | struct cifs_posix_ace *pACE; |
2695 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2696 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2697 | |
2698 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2699 | return -EOPNOTSUPP; | |
2700 | ||
790fe579 | 2701 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2702 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2703 | pACE = &cifs_acl->ace_array[0]; | |
2704 | size = sizeof(struct cifs_posix_acl); | |
2705 | size += sizeof(struct cifs_posix_ace) * count; | |
2706 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2707 | if (size_of_data_area < size) { |
50c2f753 SF |
2708 | cFYI(1, ("bad CIFS POSIX ACL size %d vs. %d", |
2709 | size_of_data_area, size)); | |
1da177e4 LT |
2710 | return -EINVAL; |
2711 | } | |
790fe579 | 2712 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2713 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2714 | size = sizeof(struct cifs_posix_acl); | |
2715 | size += sizeof(struct cifs_posix_ace) * count; | |
2716 | /* skip past access ACEs to get to default ACEs */ | |
2717 | pACE = &cifs_acl->ace_array[count]; | |
2718 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2719 | size += sizeof(struct cifs_posix_ace) * count; | |
2720 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2721 | if (size_of_data_area < size) |
1da177e4 LT |
2722 | return -EINVAL; |
2723 | } else { | |
2724 | /* illegal type */ | |
2725 | return -EINVAL; | |
2726 | } | |
2727 | ||
2728 | size = posix_acl_xattr_size(count); | |
790fe579 | 2729 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2730 | /* used to query ACL EA size */ |
790fe579 | 2731 | } else if (size > buflen) { |
1da177e4 LT |
2732 | return -ERANGE; |
2733 | } else /* buffer big enough */ { | |
ff7feac9 | 2734 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2735 | for (i = 0; i < count ; i++) { |
2736 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2737 | pACE++; | |
1da177e4 LT |
2738 | } |
2739 | } | |
2740 | return size; | |
2741 | } | |
2742 | ||
50c2f753 SF |
2743 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2744 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2745 | { |
2746 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2747 | ||
ff7feac9 SF |
2748 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2749 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2750 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2751 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2752 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2753 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2754 | } else |
ff7feac9 | 2755 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
50c2f753 | 2756 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ |
1da177e4 LT |
2757 | return rc; |
2758 | } | |
2759 | ||
2760 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2761 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2762 | const int buflen, const int acl_type) | |
1da177e4 LT |
2763 | { |
2764 | __u16 rc = 0; | |
50c2f753 SF |
2765 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2766 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2767 | int count; |
2768 | int i; | |
2769 | ||
790fe579 | 2770 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2771 | return 0; |
2772 | ||
2773 | count = posix_acl_xattr_count((size_t)buflen); | |
c18c842b | 2774 | cFYI(1, ("setting acl with %d entries from buf of length %d and " |
63135e08 | 2775 | "version of %d", |
ff7feac9 | 2776 | count, buflen, le32_to_cpu(local_acl->a_version))); |
790fe579 | 2777 | if (le32_to_cpu(local_acl->a_version) != 2) { |
50c2f753 | 2778 | cFYI(1, ("unknown POSIX ACL version %d", |
ff7feac9 | 2779 | le32_to_cpu(local_acl->a_version))); |
1da177e4 LT |
2780 | return 0; |
2781 | } | |
2782 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2783 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2784 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2785 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2786 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2787 | else { |
50c2f753 | 2788 | cFYI(1, ("unknown ACL type %d", acl_type)); |
1da177e4 LT |
2789 | return 0; |
2790 | } | |
50c2f753 | 2791 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2792 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2793 | &local_acl->a_entries[i]); | |
790fe579 | 2794 | if (rc != 0) { |
1da177e4 LT |
2795 | /* ACE not converted */ |
2796 | break; | |
2797 | } | |
2798 | } | |
790fe579 | 2799 | if (rc == 0) { |
1da177e4 LT |
2800 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2801 | rc += sizeof(struct cifs_posix_acl); | |
2802 | /* BB add check to make sure ACL does not overflow SMB */ | |
2803 | } | |
2804 | return rc; | |
2805 | } | |
2806 | ||
2807 | int | |
2808 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2809 | const unsigned char *searchName, |
2810 | char *acl_inf, const int buflen, const int acl_type, | |
2811 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2812 | { |
2813 | /* SMB_QUERY_POSIX_ACL */ | |
2814 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2815 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2816 | int rc = 0; | |
2817 | int bytes_returned; | |
2818 | int name_len; | |
2819 | __u16 params, byte_count; | |
50c2f753 | 2820 | |
1da177e4 LT |
2821 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); |
2822 | ||
2823 | queryAclRetry: | |
2824 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2825 | (void **) &pSMBr); | |
2826 | if (rc) | |
2827 | return rc; | |
50c2f753 | 2828 | |
1da177e4 LT |
2829 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2830 | name_len = | |
50c2f753 | 2831 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2832 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2833 | name_len++; /* trailing null */ |
2834 | name_len *= 2; | |
2835 | pSMB->FileName[name_len] = 0; | |
2836 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2837 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2838 | name_len = strnlen(searchName, PATH_MAX); |
2839 | name_len++; /* trailing null */ | |
2840 | strncpy(pSMB->FileName, searchName, name_len); | |
2841 | } | |
2842 | ||
2843 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2844 | pSMB->TotalDataCount = 0; | |
2845 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2846 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2847 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2848 | pSMB->MaxSetupCount = 0; | |
2849 | pSMB->Reserved = 0; | |
2850 | pSMB->Flags = 0; | |
2851 | pSMB->Timeout = 0; | |
2852 | pSMB->Reserved2 = 0; | |
2853 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2854 | offsetof(struct smb_com_transaction2_qpi_req, |
2855 | InformationLevel) - 4); | |
1da177e4 LT |
2856 | pSMB->DataCount = 0; |
2857 | pSMB->DataOffset = 0; | |
2858 | pSMB->SetupCount = 1; | |
2859 | pSMB->Reserved3 = 0; | |
2860 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2861 | byte_count = params + 1 /* pad */ ; | |
2862 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2863 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2864 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2865 | pSMB->Reserved4 = 0; | |
2866 | pSMB->hdr.smb_buf_length += byte_count; | |
2867 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2868 | ||
2869 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2870 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2871 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 LT |
2872 | if (rc) { |
2873 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
2874 | } else { | |
2875 | /* decode response */ | |
50c2f753 | 2876 | |
1da177e4 LT |
2877 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2878 | if (rc || (pSMBr->ByteCount < 2)) | |
2879 | /* BB also check enough total bytes returned */ | |
2880 | rc = -EIO; /* bad smb */ | |
2881 | else { | |
2882 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2883 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2884 | rc = cifs_copy_posix_acl(acl_inf, | |
2885 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2886 | buflen, acl_type, count); |
1da177e4 LT |
2887 | } |
2888 | } | |
2889 | cifs_buf_release(pSMB); | |
2890 | if (rc == -EAGAIN) | |
2891 | goto queryAclRetry; | |
2892 | return rc; | |
2893 | } | |
2894 | ||
2895 | int | |
2896 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2897 | const unsigned char *fileName, |
2898 | const char *local_acl, const int buflen, | |
2899 | const int acl_type, | |
2900 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2901 | { |
2902 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2903 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2904 | char *parm_data; | |
2905 | int name_len; | |
2906 | int rc = 0; | |
2907 | int bytes_returned = 0; | |
2908 | __u16 params, byte_count, data_count, param_offset, offset; | |
2909 | ||
2910 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2911 | setAclRetry: | |
2912 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2913 | (void **) &pSMBr); |
1da177e4 LT |
2914 | if (rc) |
2915 | return rc; | |
2916 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2917 | name_len = | |
50c2f753 | 2918 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2919 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2920 | name_len++; /* trailing null */ |
2921 | name_len *= 2; | |
50c2f753 | 2922 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2923 | name_len = strnlen(fileName, PATH_MAX); |
2924 | name_len++; /* trailing null */ | |
2925 | strncpy(pSMB->FileName, fileName, name_len); | |
2926 | } | |
2927 | params = 6 + name_len; | |
2928 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2929 | /* BB find max SMB size from sess */ |
2930 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2931 | pSMB->MaxSetupCount = 0; |
2932 | pSMB->Reserved = 0; | |
2933 | pSMB->Flags = 0; | |
2934 | pSMB->Timeout = 0; | |
2935 | pSMB->Reserved2 = 0; | |
2936 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2937 | InformationLevel) - 4; |
1da177e4 LT |
2938 | offset = param_offset + params; |
2939 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2940 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2941 | ||
2942 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2943 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2944 | |
790fe579 | 2945 | if (data_count == 0) { |
1da177e4 LT |
2946 | rc = -EOPNOTSUPP; |
2947 | goto setACLerrorExit; | |
2948 | } | |
2949 | pSMB->DataOffset = cpu_to_le16(offset); | |
2950 | pSMB->SetupCount = 1; | |
2951 | pSMB->Reserved3 = 0; | |
2952 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2953 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2954 | byte_count = 3 /* pad */ + params + data_count; | |
2955 | pSMB->DataCount = cpu_to_le16(data_count); | |
2956 | pSMB->TotalDataCount = pSMB->DataCount; | |
2957 | pSMB->ParameterCount = cpu_to_le16(params); | |
2958 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2959 | pSMB->Reserved4 = 0; | |
2960 | pSMB->hdr.smb_buf_length += byte_count; | |
2961 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2962 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2963 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2964 | if (rc) |
1da177e4 | 2965 | cFYI(1, ("Set POSIX ACL returned %d", rc)); |
1da177e4 LT |
2966 | |
2967 | setACLerrorExit: | |
2968 | cifs_buf_release(pSMB); | |
2969 | if (rc == -EAGAIN) | |
2970 | goto setAclRetry; | |
2971 | return rc; | |
2972 | } | |
2973 | ||
f654bac2 SF |
2974 | /* BB fix tabs in this function FIXME BB */ |
2975 | int | |
2976 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 2977 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 2978 | { |
50c2f753 SF |
2979 | int rc = 0; |
2980 | struct smb_t2_qfi_req *pSMB = NULL; | |
2981 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2982 | int bytes_returned; | |
2983 | __u16 params, byte_count; | |
f654bac2 | 2984 | |
790fe579 SF |
2985 | cFYI(1, ("In GetExtAttr")); |
2986 | if (tcon == NULL) | |
2987 | return -ENODEV; | |
f654bac2 SF |
2988 | |
2989 | GetExtAttrRetry: | |
790fe579 SF |
2990 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2991 | (void **) &pSMBr); | |
2992 | if (rc) | |
2993 | return rc; | |
f654bac2 | 2994 | |
ad7a2926 | 2995 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
2996 | pSMB->t2.TotalDataCount = 0; |
2997 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2998 | /* BB find exact max data count below from sess structure BB */ | |
2999 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3000 | pSMB->t2.MaxSetupCount = 0; | |
3001 | pSMB->t2.Reserved = 0; | |
3002 | pSMB->t2.Flags = 0; | |
3003 | pSMB->t2.Timeout = 0; | |
3004 | pSMB->t2.Reserved2 = 0; | |
3005 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3006 | Fid) - 4); | |
3007 | pSMB->t2.DataCount = 0; | |
3008 | pSMB->t2.DataOffset = 0; | |
3009 | pSMB->t2.SetupCount = 1; | |
3010 | pSMB->t2.Reserved3 = 0; | |
3011 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3012 | byte_count = params + 1 /* pad */ ; | |
3013 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3014 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3015 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3016 | pSMB->Pad = 0; | |
f654bac2 | 3017 | pSMB->Fid = netfid; |
790fe579 SF |
3018 | pSMB->hdr.smb_buf_length += byte_count; |
3019 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
3020 | ||
3021 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3022 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3023 | if (rc) { | |
3024 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
3025 | } else { | |
3026 | /* decode response */ | |
3027 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3028 | if (rc || (pSMBr->ByteCount < 2)) | |
3029 | /* BB also check enough total bytes returned */ | |
3030 | /* If rc should we check for EOPNOSUPP and | |
3031 | disable the srvino flag? or in caller? */ | |
3032 | rc = -EIO; /* bad smb */ | |
3033 | else { | |
3034 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3035 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3036 | struct file_chattr_info *pfinfo; | |
3037 | /* BB Do we need a cast or hash here ? */ | |
3038 | if (count != 16) { | |
3039 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
3040 | rc = -EIO; | |
3041 | goto GetExtAttrOut; | |
3042 | } | |
3043 | pfinfo = (struct file_chattr_info *) | |
3044 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3045 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3046 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3047 | } |
3048 | } | |
f654bac2 | 3049 | GetExtAttrOut: |
790fe579 SF |
3050 | cifs_buf_release(pSMB); |
3051 | if (rc == -EAGAIN) | |
3052 | goto GetExtAttrRetry; | |
3053 | return rc; | |
f654bac2 SF |
3054 | } |
3055 | ||
f654bac2 | 3056 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3057 | |
297647c2 | 3058 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
3059 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3060 | int | |
3061 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3062 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3063 | { |
3064 | int rc = 0; | |
3065 | int buf_type = 0; | |
ad7a2926 | 3066 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3067 | struct kvec iov[1]; |
3068 | ||
3069 | cFYI(1, ("GetCifsACL")); | |
3070 | ||
630f3f0c SF |
3071 | *pbuflen = 0; |
3072 | *acl_inf = NULL; | |
3073 | ||
b9c7a2bb | 3074 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3075 | 8 /* parm len */, tcon, (void **) &pSMB); |
3076 | if (rc) | |
3077 | return rc; | |
3078 | ||
3079 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3080 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3081 | pSMB->MaxSetupCount = 0; | |
3082 | pSMB->Fid = fid; /* file handle always le */ | |
3083 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3084 | CIFS_ACL_DACL); | |
3085 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3086 | pSMB->hdr.smb_buf_length += 11; | |
3087 | iov[0].iov_base = (char *)pSMB; | |
3088 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3089 | ||
a761ac57 | 3090 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
133672ef | 3091 | CIFS_STD_OP); |
0a4b92c0 SF |
3092 | cifs_stats_inc(&tcon->num_acl_get); |
3093 | if (rc) { | |
3094 | cFYI(1, ("Send error in QuerySecDesc = %d", rc)); | |
3095 | } else { /* decode response */ | |
ad7a2926 | 3096 | __le32 *parm; |
630f3f0c SF |
3097 | __u32 parm_len; |
3098 | __u32 acl_len; | |
50c2f753 | 3099 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3100 | char *pdata; |
0a4b92c0 SF |
3101 | |
3102 | /* validate_nttransact */ | |
50c2f753 | 3103 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3104 | &pdata, &parm_len, pbuflen); |
790fe579 | 3105 | if (rc) |
0a4b92c0 SF |
3106 | goto qsec_out; |
3107 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3108 | ||
630f3f0c | 3109 | cFYI(1, ("smb %p parm %p data %p", pSMBr, parm, *acl_inf)); |
0a4b92c0 SF |
3110 | |
3111 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3112 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3113 | *pbuflen = 0; |
0a4b92c0 SF |
3114 | goto qsec_out; |
3115 | } | |
3116 | ||
3117 | /* BB check that data area is minimum length and as big as acl_len */ | |
3118 | ||
af6f4612 | 3119 | acl_len = le32_to_cpu(*parm); |
630f3f0c SF |
3120 | if (acl_len != *pbuflen) { |
3121 | cERROR(1, ("acl length %d does not match %d", | |
3122 | acl_len, *pbuflen)); | |
3123 | if (*pbuflen > acl_len) | |
3124 | *pbuflen = acl_len; | |
3125 | } | |
0a4b92c0 | 3126 | |
630f3f0c SF |
3127 | /* check if buffer is big enough for the acl |
3128 | header followed by the smallest SID */ | |
3129 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3130 | (*pbuflen >= 64 * 1024)) { | |
3131 | cERROR(1, ("bad acl length %d", *pbuflen)); | |
3132 | rc = -EINVAL; | |
3133 | *pbuflen = 0; | |
3134 | } else { | |
3135 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3136 | if (*acl_inf == NULL) { | |
3137 | *pbuflen = 0; | |
3138 | rc = -ENOMEM; | |
3139 | } | |
3140 | memcpy(*acl_inf, pdata, *pbuflen); | |
3141 | } | |
0a4b92c0 SF |
3142 | } |
3143 | qsec_out: | |
790fe579 | 3144 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3145 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3146 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3147 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3148 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3149 | return rc; |
3150 | } | |
97837582 SF |
3151 | |
3152 | int | |
3153 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3154 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3155 | { | |
3156 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3157 | int rc = 0; | |
3158 | int bytes_returned = 0; | |
3159 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3160 | NTRANSACT_RSP *pSMBr = NULL; | |
3161 | ||
3162 | setCifsAclRetry: | |
3163 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3164 | (void **) &pSMBr); | |
3165 | if (rc) | |
3166 | return (rc); | |
3167 | ||
3168 | pSMB->MaxSetupCount = 0; | |
3169 | pSMB->Reserved = 0; | |
3170 | ||
3171 | param_count = 8; | |
3172 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3173 | data_count = acllen; | |
3174 | data_offset = param_offset + param_count; | |
3175 | byte_count = 3 /* pad */ + param_count; | |
3176 | ||
3177 | pSMB->DataCount = cpu_to_le32(data_count); | |
3178 | pSMB->TotalDataCount = pSMB->DataCount; | |
3179 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3180 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3181 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3182 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3183 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3184 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3185 | pSMB->SetupCount = 0; | |
3186 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3187 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3188 | ||
3189 | pSMB->Fid = fid; /* file handle always le */ | |
3190 | pSMB->Reserved2 = 0; | |
3191 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3192 | ||
3193 | if (pntsd && acllen) { | |
3194 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3195 | (char *) pntsd, | |
3196 | acllen); | |
3197 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3198 | ||
3199 | } else | |
3200 | pSMB->hdr.smb_buf_length += byte_count; | |
3201 | ||
3202 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3203 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3204 | ||
3205 | cFYI(1, ("SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc)); | |
3206 | if (rc) | |
3207 | cFYI(1, ("Set CIFS ACL returned %d", rc)); | |
3208 | cifs_buf_release(pSMB); | |
3209 | ||
3210 | if (rc == -EAGAIN) | |
3211 | goto setCifsAclRetry; | |
3212 | ||
3213 | return (rc); | |
3214 | } | |
3215 | ||
297647c2 | 3216 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
0a4b92c0 | 3217 | |
6b8edfe0 SF |
3218 | /* Legacy Query Path Information call for lookup to old servers such |
3219 | as Win9x/WinME */ | |
3220 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3221 | const unsigned char *searchName, |
3222 | FILE_ALL_INFO *pFinfo, | |
3223 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3224 | { |
ad7a2926 SF |
3225 | QUERY_INFORMATION_REQ *pSMB; |
3226 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3227 | int rc = 0; |
3228 | int bytes_returned; | |
3229 | int name_len; | |
3230 | ||
50c2f753 | 3231 | cFYI(1, ("In SMBQPath path %s", searchName)); |
6b8edfe0 SF |
3232 | QInfRetry: |
3233 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3234 | (void **) &pSMBr); |
6b8edfe0 SF |
3235 | if (rc) |
3236 | return rc; | |
3237 | ||
3238 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3239 | name_len = | |
50c2f753 SF |
3240 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3241 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3242 | name_len++; /* trailing null */ |
3243 | name_len *= 2; | |
50c2f753 | 3244 | } else { |
6b8edfe0 SF |
3245 | name_len = strnlen(searchName, PATH_MAX); |
3246 | name_len++; /* trailing null */ | |
3247 | strncpy(pSMB->FileName, searchName, name_len); | |
3248 | } | |
3249 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3250 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3251 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3252 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3253 | ||
3254 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3255 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 SF |
3256 | if (rc) { |
3257 | cFYI(1, ("Send error in QueryInfo = %d", rc)); | |
ad7a2926 | 3258 | } else if (pFinfo) { |
1bd5bbcb SF |
3259 | struct timespec ts; |
3260 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3261 | |
3262 | /* decode response */ | |
1bd5bbcb | 3263 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3264 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3265 | ts.tv_nsec = 0; |
3266 | ts.tv_sec = time; | |
3267 | /* decode time fields */ | |
733f99ac | 3268 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3269 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3270 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3271 | pFinfo->AllocationSize = |
3272 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3273 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3274 | pFinfo->Attributes = | |
3275 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3276 | } else |
3277 | rc = -EIO; /* bad buffer passed in */ | |
3278 | ||
3279 | cifs_buf_release(pSMB); | |
3280 | ||
3281 | if (rc == -EAGAIN) | |
3282 | goto QInfRetry; | |
3283 | ||
3284 | return rc; | |
3285 | } | |
3286 | ||
3287 | ||
3288 | ||
3289 | ||
1da177e4 LT |
3290 | int |
3291 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3292 | const unsigned char *searchName, | |
ad7a2926 | 3293 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3294 | int legacy /* old style infolevel */, |
737b758c | 3295 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3296 | { |
3297 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3298 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3299 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3300 | int rc = 0; | |
3301 | int bytes_returned; | |
3302 | int name_len; | |
3303 | __u16 params, byte_count; | |
3304 | ||
3305 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
3306 | QPathInfoRetry: | |
3307 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3308 | (void **) &pSMBr); | |
3309 | if (rc) | |
3310 | return rc; | |
3311 | ||
3312 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3313 | name_len = | |
50c2f753 | 3314 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3315 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3316 | name_len++; /* trailing null */ |
3317 | name_len *= 2; | |
50c2f753 | 3318 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3319 | name_len = strnlen(searchName, PATH_MAX); |
3320 | name_len++; /* trailing null */ | |
3321 | strncpy(pSMB->FileName, searchName, name_len); | |
3322 | } | |
3323 | ||
50c2f753 | 3324 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3325 | pSMB->TotalDataCount = 0; |
3326 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3327 | /* BB find exact max SMB PDU from sess structure BB */ |
3328 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3329 | pSMB->MaxSetupCount = 0; |
3330 | pSMB->Reserved = 0; | |
3331 | pSMB->Flags = 0; | |
3332 | pSMB->Timeout = 0; | |
3333 | pSMB->Reserved2 = 0; | |
3334 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3335 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3336 | pSMB->DataCount = 0; |
3337 | pSMB->DataOffset = 0; | |
3338 | pSMB->SetupCount = 1; | |
3339 | pSMB->Reserved3 = 0; | |
3340 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3341 | byte_count = params + 1 /* pad */ ; | |
3342 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3343 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3344 | if (legacy) |
acf1a1b1 SF |
3345 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3346 | else | |
3347 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3348 | pSMB->Reserved4 = 0; |
3349 | pSMB->hdr.smb_buf_length += byte_count; | |
3350 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3351 | ||
3352 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3353 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3354 | if (rc) { | |
3355 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3356 | } else { /* decode response */ | |
3357 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3358 | ||
acf1a1b1 SF |
3359 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3360 | rc = -EIO; | |
50c2f753 | 3361 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3362 | rc = -EIO; /* bad smb */ |
790fe579 | 3363 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3364 | rc = -EIO; /* 24 or 26 expected but we do not read |
3365 | last field */ | |
3366 | else if (pFindData) { | |
acf1a1b1 | 3367 | int size; |
1da177e4 | 3368 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3369 | |
3370 | /* On legacy responses we do not read the last field, | |
3371 | EAsize, fortunately since it varies by subdialect and | |
3372 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3373 | bytes depending but we don't care here */ | |
3374 | if (legacy) | |
acf1a1b1 SF |
3375 | size = sizeof(FILE_INFO_STANDARD); |
3376 | else | |
3377 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3378 | memcpy((char *) pFindData, |
3379 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3380 | data_offset, size); |
1da177e4 LT |
3381 | } else |
3382 | rc = -ENOMEM; | |
3383 | } | |
3384 | cifs_buf_release(pSMB); | |
3385 | if (rc == -EAGAIN) | |
3386 | goto QPathInfoRetry; | |
3387 | ||
3388 | return rc; | |
3389 | } | |
3390 | ||
3391 | int | |
3392 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3393 | const unsigned char *searchName, | |
582d21e5 | 3394 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3395 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3396 | { |
3397 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3398 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3399 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3400 | int rc = 0; | |
3401 | int bytes_returned = 0; | |
3402 | int name_len; | |
3403 | __u16 params, byte_count; | |
3404 | ||
3405 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
3406 | UnixQPathInfoRetry: | |
3407 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3408 | (void **) &pSMBr); | |
3409 | if (rc) | |
3410 | return rc; | |
3411 | ||
3412 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3413 | name_len = | |
b1a45695 | 3414 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3415 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3416 | name_len++; /* trailing null */ |
3417 | name_len *= 2; | |
50c2f753 | 3418 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3419 | name_len = strnlen(searchName, PATH_MAX); |
3420 | name_len++; /* trailing null */ | |
3421 | strncpy(pSMB->FileName, searchName, name_len); | |
3422 | } | |
3423 | ||
50c2f753 | 3424 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3425 | pSMB->TotalDataCount = 0; |
3426 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3427 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3428 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3429 | pSMB->MaxSetupCount = 0; |
3430 | pSMB->Reserved = 0; | |
3431 | pSMB->Flags = 0; | |
3432 | pSMB->Timeout = 0; | |
3433 | pSMB->Reserved2 = 0; | |
3434 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3435 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3436 | pSMB->DataCount = 0; |
3437 | pSMB->DataOffset = 0; | |
3438 | pSMB->SetupCount = 1; | |
3439 | pSMB->Reserved3 = 0; | |
3440 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3441 | byte_count = params + 1 /* pad */ ; | |
3442 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3443 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3444 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3445 | pSMB->Reserved4 = 0; | |
3446 | pSMB->hdr.smb_buf_length += byte_count; | |
3447 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3448 | ||
3449 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3450 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3451 | if (rc) { | |
3452 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3453 | } else { /* decode response */ | |
3454 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3455 | ||
3456 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
1e71f25d SF |
3457 | cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n" |
3458 | "Unix Extensions can be disabled on mount " | |
3459 | "by specifying the nosfu mount option.")); | |
1da177e4 LT |
3460 | rc = -EIO; /* bad smb */ |
3461 | } else { | |
3462 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3463 | memcpy((char *) pFindData, | |
3464 | (char *) &pSMBr->hdr.Protocol + | |
3465 | data_offset, | |
630f3f0c | 3466 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3467 | } |
3468 | } | |
3469 | cifs_buf_release(pSMB); | |
3470 | if (rc == -EAGAIN) | |
3471 | goto UnixQPathInfoRetry; | |
3472 | ||
3473 | return rc; | |
3474 | } | |
3475 | ||
1da177e4 LT |
3476 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3477 | int | |
3478 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3479 | const char *searchName, |
1da177e4 | 3480 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3481 | __u16 *pnetfid, |
3482 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3483 | { |
3484 | /* level 257 SMB_ */ | |
3485 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3486 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3487 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3488 | int rc = 0; |
3489 | int bytes_returned = 0; | |
3490 | int name_len; | |
3491 | __u16 params, byte_count; | |
3492 | ||
50c2f753 | 3493 | cFYI(1, ("In FindFirst for %s", searchName)); |
1da177e4 LT |
3494 | |
3495 | findFirstRetry: | |
3496 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3497 | (void **) &pSMBr); | |
3498 | if (rc) | |
3499 | return rc; | |
3500 | ||
3501 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3502 | name_len = | |
50c2f753 | 3503 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3504 | PATH_MAX, nls_codepage, remap); |
3505 | /* We can not add the asterik earlier in case | |
3506 | it got remapped to 0xF03A as if it were part of the | |
3507 | directory name instead of a wildcard */ | |
1da177e4 | 3508 | name_len *= 2; |
ac67055e | 3509 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3510 | pSMB->FileName[name_len+1] = 0; |
3511 | pSMB->FileName[name_len+2] = '*'; | |
3512 | pSMB->FileName[name_len+3] = 0; | |
3513 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3514 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3515 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3516 | name_len += 2; |
1da177e4 LT |
3517 | } else { /* BB add check for overrun of SMB buf BB */ |
3518 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3519 | /* BB fix here and in unicode clause above ie |
790fe579 | 3520 | if (name_len > buffersize-header) |
1da177e4 LT |
3521 | free buffer exit; BB */ |
3522 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3523 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3524 | pSMB->FileName[name_len+1] = '*'; |
3525 | pSMB->FileName[name_len+2] = 0; | |
3526 | name_len += 3; | |
1da177e4 LT |
3527 | } |
3528 | ||
3529 | params = 12 + name_len /* includes null */ ; | |
3530 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3531 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3532 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3533 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3534 | pSMB->MaxSetupCount = 0; | |
3535 | pSMB->Reserved = 0; | |
3536 | pSMB->Flags = 0; | |
3537 | pSMB->Timeout = 0; | |
3538 | pSMB->Reserved2 = 0; | |
3539 | byte_count = params + 1 /* pad */ ; | |
3540 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3541 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3542 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3543 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3544 | - 4); | |
1da177e4 LT |
3545 | pSMB->DataCount = 0; |
3546 | pSMB->DataOffset = 0; | |
3547 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3548 | pSMB->Reserved3 = 0; | |
3549 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3550 | pSMB->SearchAttributes = | |
3551 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3552 | ATTR_DIRECTORY); | |
50c2f753 SF |
3553 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3554 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3555 | CIFS_SEARCH_RETURN_RESUME); |
3556 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3557 | ||
3558 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3559 | pSMB->SearchStorageType = 0; | |
3560 | pSMB->hdr.smb_buf_length += byte_count; | |
3561 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3562 | ||
3563 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3564 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3565 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3566 | |
88274815 SF |
3567 | if (rc) {/* BB add logic to retry regular search if Unix search |
3568 | rejected unexpectedly by server */ | |
1da177e4 LT |
3569 | /* BB Add code to handle unsupported level rc */ |
3570 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
1982c344 | 3571 | |
88274815 | 3572 | cifs_buf_release(pSMB); |
1da177e4 LT |
3573 | |
3574 | /* BB eventually could optimize out free and realloc of buf */ | |
3575 | /* for this case */ | |
3576 | if (rc == -EAGAIN) | |
3577 | goto findFirstRetry; | |
3578 | } else { /* decode response */ | |
3579 | /* BB remember to free buffer if error BB */ | |
3580 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3581 | if (rc == 0) { |
b77d753c SF |
3582 | unsigned int lnoff; |
3583 | ||
1da177e4 | 3584 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3585 | psrch_inf->unicode = true; |
1da177e4 | 3586 | else |
4b18f2a9 | 3587 | psrch_inf->unicode = false; |
1da177e4 LT |
3588 | |
3589 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3590 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3591 | psrch_inf->srch_entries_start = |
3592 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3593 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3594 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3595 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3596 | ||
790fe579 | 3597 | if (parms->EndofSearch) |
4b18f2a9 | 3598 | psrch_inf->endOfSearch = true; |
1da177e4 | 3599 | else |
4b18f2a9 | 3600 | psrch_inf->endOfSearch = false; |
1da177e4 | 3601 | |
50c2f753 SF |
3602 | psrch_inf->entries_in_buffer = |
3603 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3604 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3605 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3606 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3607 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3608 | lnoff) { | |
3609 | cERROR(1, ("ignoring corrupt resume name")); | |
3610 | psrch_inf->last_entry = NULL; | |
3611 | return rc; | |
3612 | } | |
3613 | ||
0752f152 | 3614 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3615 | lnoff; |
3616 | ||
1da177e4 LT |
3617 | *pnetfid = parms->SearchHandle; |
3618 | } else { | |
3619 | cifs_buf_release(pSMB); | |
3620 | } | |
3621 | } | |
3622 | ||
3623 | return rc; | |
3624 | } | |
3625 | ||
3626 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3627 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3628 | { |
3629 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3630 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3631 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3632 | char *response_data; |
3633 | int rc = 0; | |
3634 | int bytes_returned, name_len; | |
3635 | __u16 params, byte_count; | |
3636 | ||
3637 | cFYI(1, ("In FindNext")); | |
3638 | ||
4b18f2a9 | 3639 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3640 | return -ENOENT; |
3641 | ||
3642 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3643 | (void **) &pSMBr); | |
3644 | if (rc) | |
3645 | return rc; | |
3646 | ||
50c2f753 | 3647 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3648 | byte_count = 0; |
3649 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3650 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3651 | pSMB->MaxDataCount = | |
50c2f753 SF |
3652 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3653 | 0xFFFFFF00); | |
1da177e4 LT |
3654 | pSMB->MaxSetupCount = 0; |
3655 | pSMB->Reserved = 0; | |
3656 | pSMB->Flags = 0; | |
3657 | pSMB->Timeout = 0; | |
3658 | pSMB->Reserved2 = 0; | |
3659 | pSMB->ParameterOffset = cpu_to_le16( | |
3660 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3661 | pSMB->DataCount = 0; | |
3662 | pSMB->DataOffset = 0; | |
3663 | pSMB->SetupCount = 1; | |
3664 | pSMB->Reserved3 = 0; | |
3665 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3666 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3667 | pSMB->SearchCount = | |
630f3f0c | 3668 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3669 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3670 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3671 | pSMB->SearchFlags = | |
3672 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3673 | ||
3674 | name_len = psrch_inf->resume_name_len; | |
3675 | params += name_len; | |
790fe579 | 3676 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3677 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3678 | byte_count += name_len; | |
ef6724e3 SF |
3679 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3680 | pSMB->ResumeFileName[name_len] = 0; | |
3681 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3682 | } else { |
3683 | rc = -EINVAL; | |
3684 | goto FNext2_err_exit; | |
3685 | } | |
3686 | byte_count = params + 1 /* pad */ ; | |
3687 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3688 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3689 | pSMB->hdr.smb_buf_length += byte_count; | |
3690 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3691 | |
1da177e4 LT |
3692 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3693 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3694 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3695 | if (rc) { |
3696 | if (rc == -EBADF) { | |
4b18f2a9 | 3697 | psrch_inf->endOfSearch = true; |
6353450a | 3698 | cifs_buf_release(pSMB); |
50c2f753 | 3699 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 LT |
3700 | } else |
3701 | cFYI(1, ("FindNext returned = %d", rc)); | |
3702 | } else { /* decode response */ | |
3703 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3704 | |
790fe579 | 3705 | if (rc == 0) { |
b77d753c SF |
3706 | unsigned int lnoff; |
3707 | ||
1da177e4 LT |
3708 | /* BB fixme add lock for file (srch_info) struct here */ |
3709 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3710 | psrch_inf->unicode = true; |
1da177e4 | 3711 | else |
4b18f2a9 | 3712 | psrch_inf->unicode = false; |
1da177e4 LT |
3713 | response_data = (char *) &pSMBr->hdr.Protocol + |
3714 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3715 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3716 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3717 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3718 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3719 | cifs_small_buf_release( |
3720 | psrch_inf->ntwrk_buf_start); | |
3721 | else | |
3722 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3723 | psrch_inf->srch_entries_start = response_data; |
3724 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3725 | psrch_inf->smallBuf = 0; |
790fe579 | 3726 | if (parms->EndofSearch) |
4b18f2a9 | 3727 | psrch_inf->endOfSearch = true; |
1da177e4 | 3728 | else |
4b18f2a9 | 3729 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3730 | psrch_inf->entries_in_buffer = |
3731 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3732 | psrch_inf->index_of_last_entry += |
3733 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3734 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3735 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3736 | lnoff) { | |
3737 | cERROR(1, ("ignoring corrupt resume name")); | |
3738 | psrch_inf->last_entry = NULL; | |
3739 | return rc; | |
3740 | } else | |
3741 | psrch_inf->last_entry = | |
3742 | psrch_inf->srch_entries_start + lnoff; | |
3743 | ||
50c2f753 SF |
3744 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d", |
3745 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry)); */ | |
1da177e4 LT |
3746 | |
3747 | /* BB fixme add unlock here */ | |
3748 | } | |
3749 | ||
3750 | } | |
3751 | ||
3752 | /* BB On error, should we leave previous search buf (and count and | |
3753 | last entry fields) intact or free the previous one? */ | |
3754 | ||
3755 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3756 | since file handle passed in no longer valid */ | |
3757 | FNext2_err_exit: | |
3758 | if (rc != 0) | |
3759 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3760 | return rc; |
3761 | } | |
3762 | ||
3763 | int | |
50c2f753 SF |
3764 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3765 | const __u16 searchHandle) | |
1da177e4 LT |
3766 | { |
3767 | int rc = 0; | |
3768 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
3769 | |
3770 | cFYI(1, ("In CIFSSMBFindClose")); | |
3771 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
3772 | ||
3773 | /* no sense returning error if session restarted | |
3774 | as file handle has been closed */ | |
790fe579 | 3775 | if (rc == -EAGAIN) |
1da177e4 LT |
3776 | return 0; |
3777 | if (rc) | |
3778 | return rc; | |
3779 | ||
1da177e4 LT |
3780 | pSMB->FileID = searchHandle; |
3781 | pSMB->ByteCount = 0; | |
133672ef | 3782 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3783 | if (rc) |
1da177e4 | 3784 | cERROR(1, ("Send error in FindClose = %d", rc)); |
ad7a2926 | 3785 | |
a4544347 | 3786 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3787 | |
3788 | /* Since session is dead, search handle closed on server already */ | |
3789 | if (rc == -EAGAIN) | |
3790 | rc = 0; | |
3791 | ||
3792 | return rc; | |
3793 | } | |
3794 | ||
1da177e4 LT |
3795 | int |
3796 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3797 | const unsigned char *searchName, |
ad7a2926 | 3798 | __u64 *inode_number, |
50c2f753 | 3799 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3800 | { |
3801 | int rc = 0; | |
3802 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3803 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3804 | int name_len, bytes_returned; | |
3805 | __u16 params, byte_count; | |
3806 | ||
50c2f753 | 3807 | cFYI(1, ("In GetSrvInodeNum for %s", searchName)); |
790fe579 | 3808 | if (tcon == NULL) |
50c2f753 | 3809 | return -ENODEV; |
1da177e4 LT |
3810 | |
3811 | GetInodeNumberRetry: | |
3812 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3813 | (void **) &pSMBr); |
1da177e4 LT |
3814 | if (rc) |
3815 | return rc; | |
3816 | ||
1da177e4 LT |
3817 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3818 | name_len = | |
b1a45695 | 3819 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 3820 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3821 | name_len++; /* trailing null */ |
3822 | name_len *= 2; | |
50c2f753 | 3823 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3824 | name_len = strnlen(searchName, PATH_MAX); |
3825 | name_len++; /* trailing null */ | |
3826 | strncpy(pSMB->FileName, searchName, name_len); | |
3827 | } | |
3828 | ||
3829 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3830 | pSMB->TotalDataCount = 0; | |
3831 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3832 | /* BB find exact max data count below from sess structure BB */ | |
3833 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3834 | pSMB->MaxSetupCount = 0; | |
3835 | pSMB->Reserved = 0; | |
3836 | pSMB->Flags = 0; | |
3837 | pSMB->Timeout = 0; | |
3838 | pSMB->Reserved2 = 0; | |
3839 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3840 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3841 | pSMB->DataCount = 0; |
3842 | pSMB->DataOffset = 0; | |
3843 | pSMB->SetupCount = 1; | |
3844 | pSMB->Reserved3 = 0; | |
3845 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3846 | byte_count = params + 1 /* pad */ ; | |
3847 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3848 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3849 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3850 | pSMB->Reserved4 = 0; | |
3851 | pSMB->hdr.smb_buf_length += byte_count; | |
3852 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3853 | ||
3854 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3855 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3856 | if (rc) { | |
3857 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
3858 | } else { | |
3859 | /* decode response */ | |
3860 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3861 | if (rc || (pSMBr->ByteCount < 2)) | |
3862 | /* BB also check enough total bytes returned */ | |
3863 | /* If rc should we check for EOPNOSUPP and | |
3864 | disable the srvino flag? or in caller? */ | |
3865 | rc = -EIO; /* bad smb */ | |
50c2f753 | 3866 | else { |
1da177e4 LT |
3867 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
3868 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 3869 | struct file_internal_info *pfinfo; |
1da177e4 | 3870 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 3871 | if (count < 8) { |
1da177e4 LT |
3872 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); |
3873 | rc = -EIO; | |
3874 | goto GetInodeNumOut; | |
3875 | } | |
3876 | pfinfo = (struct file_internal_info *) | |
3877 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 3878 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
3879 | } |
3880 | } | |
3881 | GetInodeNumOut: | |
3882 | cifs_buf_release(pSMB); | |
3883 | if (rc == -EAGAIN) | |
3884 | goto GetInodeNumberRetry; | |
3885 | return rc; | |
3886 | } | |
1da177e4 | 3887 | |
fec4585f IM |
3888 | /* parses DFS refferal V3 structure |
3889 | * caller is responsible for freeing target_nodes | |
3890 | * returns: | |
3891 | * on success - 0 | |
3892 | * on failure - errno | |
3893 | */ | |
3894 | static int | |
a1fe78f1 | 3895 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
3896 | unsigned int *num_of_nodes, |
3897 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
3898 | const struct nls_table *nls_codepage, int remap, |
3899 | const char *searchName) | |
fec4585f IM |
3900 | { |
3901 | int i, rc = 0; | |
3902 | char *data_end; | |
3903 | bool is_unicode; | |
3904 | struct dfs_referral_level_3 *ref; | |
3905 | ||
5ca33c6a HH |
3906 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3907 | is_unicode = true; | |
3908 | else | |
3909 | is_unicode = false; | |
fec4585f IM |
3910 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
3911 | ||
3912 | if (*num_of_nodes < 1) { | |
3913 | cERROR(1, ("num_referrals: must be at least > 0," | |
3914 | "but we get num_referrals = %d\n", *num_of_nodes)); | |
3915 | rc = -EINVAL; | |
a1fe78f1 | 3916 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3917 | } |
3918 | ||
3919 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 3920 | if (ref->VersionNumber != cpu_to_le16(3)) { |
fec4585f | 3921 | cERROR(1, ("Referrals of V%d version are not supported," |
1d92cfd5 | 3922 | "should be V3", le16_to_cpu(ref->VersionNumber))); |
fec4585f | 3923 | rc = -EINVAL; |
a1fe78f1 | 3924 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3925 | } |
3926 | ||
3927 | /* get the upper boundary of the resp buffer */ | |
3928 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
3929 | le16_to_cpu(pSMBr->t2.DataCount); | |
3930 | ||
3931 | cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n", | |
3932 | *num_of_nodes, | |
3933 | le16_to_cpu(pSMBr->DFSFlags))); | |
3934 | ||
3935 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
3936 | *num_of_nodes, GFP_KERNEL); | |
3937 | if (*target_nodes == NULL) { | |
3938 | cERROR(1, ("Failed to allocate buffer for target_nodes\n")); | |
3939 | rc = -ENOMEM; | |
a1fe78f1 | 3940 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3941 | } |
3942 | ||
3943 | /* collect neccessary data from referrals */ | |
3944 | for (i = 0; i < *num_of_nodes; i++) { | |
3945 | char *temp; | |
3946 | int max_len; | |
3947 | struct dfs_info3_param *node = (*target_nodes)+i; | |
3948 | ||
3949 | node->flags = le16_to_cpu(pSMBr->DFSFlags); | |
2c55608f | 3950 | if (is_unicode) { |
331c3135 JL |
3951 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
3952 | GFP_KERNEL); | |
2c55608f IM |
3953 | cifsConvertToUCS((__le16 *) tmp, searchName, |
3954 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
3955 | node->path_consumed = cifs_ucs2_bytes(tmp, |
3956 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
3957 | nls_codepage); |
3958 | kfree(tmp); | |
3959 | } else | |
3960 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
3961 | ||
fec4585f IM |
3962 | node->server_type = le16_to_cpu(ref->ServerType); |
3963 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
3964 | ||
3965 | /* copy DfsPath */ | |
3966 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
3967 | max_len = data_end - temp; | |
d185cda7 SF |
3968 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
3969 | is_unicode, nls_codepage); | |
066ce689 JL |
3970 | if (IS_ERR(node->path_name)) { |
3971 | rc = PTR_ERR(node->path_name); | |
3972 | node->path_name = NULL; | |
a1fe78f1 | 3973 | goto parse_DFS_referrals_exit; |
066ce689 | 3974 | } |
fec4585f IM |
3975 | |
3976 | /* copy link target UNC */ | |
3977 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
3978 | max_len = data_end - temp; | |
d185cda7 SF |
3979 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
3980 | is_unicode, nls_codepage); | |
066ce689 JL |
3981 | if (IS_ERR(node->node_name)) { |
3982 | rc = PTR_ERR(node->node_name); | |
3983 | node->node_name = NULL; | |
a1fe78f1 | 3984 | goto parse_DFS_referrals_exit; |
066ce689 | 3985 | } |
fec4585f IM |
3986 | } |
3987 | ||
a1fe78f1 | 3988 | parse_DFS_referrals_exit: |
fec4585f IM |
3989 | if (rc) { |
3990 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
3991 | *target_nodes = NULL; | |
3992 | *num_of_nodes = 0; | |
3993 | } | |
3994 | return rc; | |
3995 | } | |
3996 | ||
1da177e4 LT |
3997 | int |
3998 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
3999 | const unsigned char *searchName, | |
c2cf07d5 SF |
4000 | struct dfs_info3_param **target_nodes, |
4001 | unsigned int *num_of_nodes, | |
737b758c | 4002 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4003 | { |
4004 | /* TRANS2_GET_DFS_REFERRAL */ | |
4005 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4006 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4007 | int rc = 0; |
4008 | int bytes_returned; | |
4009 | int name_len; | |
1da177e4 | 4010 | __u16 params, byte_count; |
c2cf07d5 SF |
4011 | *num_of_nodes = 0; |
4012 | *target_nodes = NULL; | |
1da177e4 LT |
4013 | |
4014 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
4015 | if (ses == NULL) | |
4016 | return -ENODEV; | |
4017 | getDFSRetry: | |
4018 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4019 | (void **) &pSMBr); | |
4020 | if (rc) | |
4021 | return rc; | |
50c2f753 SF |
4022 | |
4023 | /* server pointer checked in called function, | |
1982c344 SF |
4024 | but should never be null here anyway */ |
4025 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4026 | pSMB->hdr.Tid = ses->ipc_tid; |
4027 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4028 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4029 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4030 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4031 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4032 | |
4033 | if (ses->capabilities & CAP_UNICODE) { | |
4034 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4035 | name_len = | |
b1a45695 | 4036 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4037 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4038 | name_len++; /* trailing null */ |
4039 | name_len *= 2; | |
50c2f753 | 4040 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4041 | name_len = strnlen(searchName, PATH_MAX); |
4042 | name_len++; /* trailing null */ | |
4043 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4044 | } | |
4045 | ||
790fe579 SF |
4046 | if (ses->server) { |
4047 | if (ses->server->secMode & | |
1a4e15a0 SF |
4048 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4049 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4050 | } | |
4051 | ||
50c2f753 | 4052 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4053 | |
1da177e4 LT |
4054 | params = 2 /* level */ + name_len /*includes null */ ; |
4055 | pSMB->TotalDataCount = 0; | |
4056 | pSMB->DataCount = 0; | |
4057 | pSMB->DataOffset = 0; | |
4058 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4059 | /* BB find exact max SMB PDU from sess structure BB */ |
4060 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4061 | pSMB->MaxSetupCount = 0; |
4062 | pSMB->Reserved = 0; | |
4063 | pSMB->Flags = 0; | |
4064 | pSMB->Timeout = 0; | |
4065 | pSMB->Reserved2 = 0; | |
4066 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4067 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4068 | pSMB->SetupCount = 1; |
4069 | pSMB->Reserved3 = 0; | |
4070 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4071 | byte_count = params + 3 /* pad */ ; | |
4072 | pSMB->ParameterCount = cpu_to_le16(params); | |
4073 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4074 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
4075 | pSMB->hdr.smb_buf_length += byte_count; | |
4076 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4077 | ||
4078 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4079 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4080 | if (rc) { | |
4081 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
c2cf07d5 SF |
4082 | goto GetDFSRefExit; |
4083 | } | |
4084 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4085 | |
c2cf07d5 | 4086 | /* BB Also check if enough total bytes returned? */ |
fec4585f | 4087 | if (rc || (pSMBr->ByteCount < 17)) { |
c2cf07d5 | 4088 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4089 | goto GetDFSRefExit; |
4090 | } | |
c2cf07d5 | 4091 | |
fec4585f IM |
4092 | cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d", |
4093 | pSMBr->ByteCount, | |
4094 | le16_to_cpu(pSMBr->t2.DataOffset))); | |
1da177e4 | 4095 | |
fec4585f | 4096 | /* parse returned result into more usable form */ |
a1fe78f1 | 4097 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4098 | target_nodes, nls_codepage, remap, |
4099 | searchName); | |
c2cf07d5 | 4100 | |
1da177e4 | 4101 | GetDFSRefExit: |
0d817bc0 | 4102 | cifs_buf_release(pSMB); |
1da177e4 LT |
4103 | |
4104 | if (rc == -EAGAIN) | |
4105 | goto getDFSRetry; | |
4106 | ||
4107 | return rc; | |
4108 | } | |
4109 | ||
20962438 SF |
4110 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4111 | int | |
4112 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4113 | { | |
4114 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4115 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4116 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4117 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4118 | int rc = 0; | |
4119 | int bytes_returned = 0; | |
4120 | __u16 params, byte_count; | |
4121 | ||
4122 | cFYI(1, ("OldQFSInfo")); | |
4123 | oldQFSInfoRetry: | |
4124 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4125 | (void **) &pSMBr); | |
4126 | if (rc) | |
4127 | return rc; | |
20962438 SF |
4128 | |
4129 | params = 2; /* level */ | |
4130 | pSMB->TotalDataCount = 0; | |
4131 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4132 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4133 | pSMB->MaxSetupCount = 0; | |
4134 | pSMB->Reserved = 0; | |
4135 | pSMB->Flags = 0; | |
4136 | pSMB->Timeout = 0; | |
4137 | pSMB->Reserved2 = 0; | |
4138 | byte_count = params + 1 /* pad */ ; | |
4139 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4140 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4141 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4142 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4143 | pSMB->DataCount = 0; | |
4144 | pSMB->DataOffset = 0; | |
4145 | pSMB->SetupCount = 1; | |
4146 | pSMB->Reserved3 = 0; | |
4147 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4148 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4149 | pSMB->hdr.smb_buf_length += byte_count; | |
4150 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4151 | ||
4152 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4153 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4154 | if (rc) { | |
4155 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
4156 | } else { /* decode response */ | |
4157 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4158 | ||
4159 | if (rc || (pSMBr->ByteCount < 18)) | |
4160 | rc = -EIO; /* bad smb */ | |
4161 | else { | |
4162 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 4163 | cFYI(1, ("qfsinf resp BCC: %d Offset %d", |
20962438 SF |
4164 | pSMBr->ByteCount, data_offset)); |
4165 | ||
50c2f753 | 4166 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4167 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4168 | FSData->f_bsize = | |
4169 | le16_to_cpu(response_data->BytesPerSector) * | |
4170 | le32_to_cpu(response_data-> | |
4171 | SectorsPerAllocationUnit); | |
4172 | FSData->f_blocks = | |
50c2f753 | 4173 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4174 | FSData->f_bfree = FSData->f_bavail = |
4175 | le32_to_cpu(response_data->FreeAllocationUnits); | |
4176 | cFYI(1, | |
4177 | ("Blocks: %lld Free: %lld Block size %ld", | |
4178 | (unsigned long long)FSData->f_blocks, | |
4179 | (unsigned long long)FSData->f_bfree, | |
4180 | FSData->f_bsize)); | |
4181 | } | |
4182 | } | |
4183 | cifs_buf_release(pSMB); | |
4184 | ||
4185 | if (rc == -EAGAIN) | |
4186 | goto oldQFSInfoRetry; | |
4187 | ||
4188 | return rc; | |
4189 | } | |
4190 | ||
1da177e4 | 4191 | int |
737b758c | 4192 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4193 | { |
4194 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4195 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4196 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4197 | FILE_SYSTEM_INFO *response_data; | |
4198 | int rc = 0; | |
4199 | int bytes_returned = 0; | |
4200 | __u16 params, byte_count; | |
4201 | ||
4202 | cFYI(1, ("In QFSInfo")); | |
4203 | QFSInfoRetry: | |
4204 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4205 | (void **) &pSMBr); | |
4206 | if (rc) | |
4207 | return rc; | |
4208 | ||
4209 | params = 2; /* level */ | |
4210 | pSMB->TotalDataCount = 0; | |
4211 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4212 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4213 | pSMB->MaxSetupCount = 0; |
4214 | pSMB->Reserved = 0; | |
4215 | pSMB->Flags = 0; | |
4216 | pSMB->Timeout = 0; | |
4217 | pSMB->Reserved2 = 0; | |
4218 | byte_count = params + 1 /* pad */ ; | |
4219 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4220 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4221 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4222 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4223 | pSMB->DataCount = 0; |
4224 | pSMB->DataOffset = 0; | |
4225 | pSMB->SetupCount = 1; | |
4226 | pSMB->Reserved3 = 0; | |
4227 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4228 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4229 | pSMB->hdr.smb_buf_length += byte_count; | |
4230 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4231 | ||
4232 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4233 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4234 | if (rc) { | |
20962438 | 4235 | cFYI(1, ("Send error in QFSInfo = %d", rc)); |
1da177e4 | 4236 | } else { /* decode response */ |
50c2f753 | 4237 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4238 | |
20962438 | 4239 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4240 | rc = -EIO; /* bad smb */ |
4241 | else { | |
4242 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4243 | |
4244 | response_data = | |
4245 | (FILE_SYSTEM_INFO | |
4246 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4247 | data_offset); | |
4248 | FSData->f_bsize = | |
4249 | le32_to_cpu(response_data->BytesPerSector) * | |
4250 | le32_to_cpu(response_data-> | |
4251 | SectorsPerAllocationUnit); | |
4252 | FSData->f_blocks = | |
4253 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4254 | FSData->f_bfree = FSData->f_bavail = | |
4255 | le64_to_cpu(response_data->FreeAllocationUnits); | |
4256 | cFYI(1, | |
4257 | ("Blocks: %lld Free: %lld Block size %ld", | |
4258 | (unsigned long long)FSData->f_blocks, | |
4259 | (unsigned long long)FSData->f_bfree, | |
4260 | FSData->f_bsize)); | |
4261 | } | |
4262 | } | |
4263 | cifs_buf_release(pSMB); | |
4264 | ||
4265 | if (rc == -EAGAIN) | |
4266 | goto QFSInfoRetry; | |
4267 | ||
4268 | return rc; | |
4269 | } | |
4270 | ||
4271 | int | |
737b758c | 4272 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4273 | { |
4274 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4275 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4276 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4277 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4278 | int rc = 0; | |
4279 | int bytes_returned = 0; | |
4280 | __u16 params, byte_count; | |
4281 | ||
4282 | cFYI(1, ("In QFSAttributeInfo")); | |
4283 | QFSAttributeRetry: | |
4284 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4285 | (void **) &pSMBr); | |
4286 | if (rc) | |
4287 | return rc; | |
4288 | ||
4289 | params = 2; /* level */ | |
4290 | pSMB->TotalDataCount = 0; | |
4291 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4292 | /* BB find exact max SMB PDU from sess structure BB */ |
4293 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4294 | pSMB->MaxSetupCount = 0; |
4295 | pSMB->Reserved = 0; | |
4296 | pSMB->Flags = 0; | |
4297 | pSMB->Timeout = 0; | |
4298 | pSMB->Reserved2 = 0; | |
4299 | byte_count = params + 1 /* pad */ ; | |
4300 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4301 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4302 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4303 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4304 | pSMB->DataCount = 0; |
4305 | pSMB->DataOffset = 0; | |
4306 | pSMB->SetupCount = 1; | |
4307 | pSMB->Reserved3 = 0; | |
4308 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4309 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4310 | pSMB->hdr.smb_buf_length += byte_count; | |
4311 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4312 | ||
4313 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4314 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4315 | if (rc) { | |
4316 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
4317 | } else { /* decode response */ | |
4318 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4319 | ||
50c2f753 SF |
4320 | if (rc || (pSMBr->ByteCount < 13)) { |
4321 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4322 | rc = -EIO; /* bad smb */ |
4323 | } else { | |
4324 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4325 | response_data = | |
4326 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4327 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4328 | data_offset); | |
4329 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4330 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4331 | } |
4332 | } | |
4333 | cifs_buf_release(pSMB); | |
4334 | ||
4335 | if (rc == -EAGAIN) | |
4336 | goto QFSAttributeRetry; | |
4337 | ||
4338 | return rc; | |
4339 | } | |
4340 | ||
4341 | int | |
737b758c | 4342 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4343 | { |
4344 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4345 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4346 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4347 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4348 | int rc = 0; | |
4349 | int bytes_returned = 0; | |
4350 | __u16 params, byte_count; | |
4351 | ||
4352 | cFYI(1, ("In QFSDeviceInfo")); | |
4353 | QFSDeviceRetry: | |
4354 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4355 | (void **) &pSMBr); | |
4356 | if (rc) | |
4357 | return rc; | |
4358 | ||
4359 | params = 2; /* level */ | |
4360 | pSMB->TotalDataCount = 0; | |
4361 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4362 | /* BB find exact max SMB PDU from sess structure BB */ |
4363 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4364 | pSMB->MaxSetupCount = 0; |
4365 | pSMB->Reserved = 0; | |
4366 | pSMB->Flags = 0; | |
4367 | pSMB->Timeout = 0; | |
4368 | pSMB->Reserved2 = 0; | |
4369 | byte_count = params + 1 /* pad */ ; | |
4370 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4371 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4372 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4373 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4374 | |
4375 | pSMB->DataCount = 0; | |
4376 | pSMB->DataOffset = 0; | |
4377 | pSMB->SetupCount = 1; | |
4378 | pSMB->Reserved3 = 0; | |
4379 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4380 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4381 | pSMB->hdr.smb_buf_length += byte_count; | |
4382 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4383 | ||
4384 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4385 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4386 | if (rc) { | |
4387 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
4388 | } else { /* decode response */ | |
4389 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4390 | ||
630f3f0c | 4391 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) |
1da177e4 LT |
4392 | rc = -EIO; /* bad smb */ |
4393 | else { | |
4394 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4395 | response_data = | |
737b758c SF |
4396 | (FILE_SYSTEM_DEVICE_INFO *) |
4397 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4398 | data_offset); |
4399 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4400 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4401 | } |
4402 | } | |
4403 | cifs_buf_release(pSMB); | |
4404 | ||
4405 | if (rc == -EAGAIN) | |
4406 | goto QFSDeviceRetry; | |
4407 | ||
4408 | return rc; | |
4409 | } | |
4410 | ||
4411 | int | |
737b758c | 4412 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4413 | { |
4414 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4415 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4416 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4417 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4418 | int rc = 0; | |
4419 | int bytes_returned = 0; | |
4420 | __u16 params, byte_count; | |
4421 | ||
4422 | cFYI(1, ("In QFSUnixInfo")); | |
4423 | QFSUnixRetry: | |
4424 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4425 | (void **) &pSMBr); | |
4426 | if (rc) | |
4427 | return rc; | |
4428 | ||
4429 | params = 2; /* level */ | |
4430 | pSMB->TotalDataCount = 0; | |
4431 | pSMB->DataCount = 0; | |
4432 | pSMB->DataOffset = 0; | |
4433 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4434 | /* BB find exact max SMB PDU from sess structure BB */ |
4435 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4436 | pSMB->MaxSetupCount = 0; |
4437 | pSMB->Reserved = 0; | |
4438 | pSMB->Flags = 0; | |
4439 | pSMB->Timeout = 0; | |
4440 | pSMB->Reserved2 = 0; | |
4441 | byte_count = params + 1 /* pad */ ; | |
4442 | pSMB->ParameterCount = cpu_to_le16(params); | |
4443 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4444 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4445 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4446 | pSMB->SetupCount = 1; |
4447 | pSMB->Reserved3 = 0; | |
4448 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4449 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4450 | pSMB->hdr.smb_buf_length += byte_count; | |
4451 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4452 | ||
4453 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4454 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4455 | if (rc) { | |
4456 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4457 | } else { /* decode response */ | |
4458 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4459 | ||
4460 | if (rc || (pSMBr->ByteCount < 13)) { | |
4461 | rc = -EIO; /* bad smb */ | |
4462 | } else { | |
4463 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4464 | response_data = | |
4465 | (FILE_SYSTEM_UNIX_INFO | |
4466 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4467 | data_offset); | |
4468 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4469 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4470 | } |
4471 | } | |
4472 | cifs_buf_release(pSMB); | |
4473 | ||
4474 | if (rc == -EAGAIN) | |
4475 | goto QFSUnixRetry; | |
4476 | ||
4477 | ||
4478 | return rc; | |
4479 | } | |
4480 | ||
ac67055e | 4481 | int |
45abc6ee | 4482 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4483 | { |
4484 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4485 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4486 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4487 | int rc = 0; | |
4488 | int bytes_returned = 0; | |
4489 | __u16 params, param_offset, offset, byte_count; | |
4490 | ||
4491 | cFYI(1, ("In SETFSUnixInfo")); | |
4492 | SETFSUnixRetry: | |
f26282c9 | 4493 | /* BB switch to small buf init to save memory */ |
ac67055e JA |
4494 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
4495 | (void **) &pSMBr); | |
4496 | if (rc) | |
4497 | return rc; | |
4498 | ||
4499 | params = 4; /* 2 bytes zero followed by info level. */ | |
4500 | pSMB->MaxSetupCount = 0; | |
4501 | pSMB->Reserved = 0; | |
4502 | pSMB->Flags = 0; | |
4503 | pSMB->Timeout = 0; | |
4504 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4505 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4506 | - 4; | |
ac67055e JA |
4507 | offset = param_offset + params; |
4508 | ||
4509 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4510 | /* BB find exact max SMB PDU from sess structure BB */ |
4511 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4512 | pSMB->SetupCount = 1; |
4513 | pSMB->Reserved3 = 0; | |
4514 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4515 | byte_count = 1 /* pad */ + params + 12; | |
4516 | ||
4517 | pSMB->DataCount = cpu_to_le16(12); | |
4518 | pSMB->ParameterCount = cpu_to_le16(params); | |
4519 | pSMB->TotalDataCount = pSMB->DataCount; | |
4520 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4521 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4522 | pSMB->DataOffset = cpu_to_le16(offset); | |
4523 | ||
4524 | /* Params. */ | |
4525 | pSMB->FileNum = 0; | |
4526 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4527 | ||
4528 | /* Data. */ | |
4529 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4530 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4531 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4532 | ||
4533 | pSMB->hdr.smb_buf_length += byte_count; | |
4534 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4535 | ||
4536 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4537 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4538 | if (rc) { | |
4539 | cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); | |
4540 | } else { /* decode response */ | |
4541 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4542 | if (rc) |
ac67055e | 4543 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4544 | } |
4545 | cifs_buf_release(pSMB); | |
4546 | ||
4547 | if (rc == -EAGAIN) | |
4548 | goto SETFSUnixRetry; | |
4549 | ||
4550 | return rc; | |
4551 | } | |
4552 | ||
4553 | ||
1da177e4 LT |
4554 | |
4555 | int | |
4556 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4557 | struct kstatfs *FSData) |
1da177e4 LT |
4558 | { |
4559 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4560 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4561 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4562 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4563 | int rc = 0; | |
4564 | int bytes_returned = 0; | |
4565 | __u16 params, byte_count; | |
4566 | ||
4567 | cFYI(1, ("In QFSPosixInfo")); | |
4568 | QFSPosixRetry: | |
4569 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4570 | (void **) &pSMBr); | |
4571 | if (rc) | |
4572 | return rc; | |
4573 | ||
4574 | params = 2; /* level */ | |
4575 | pSMB->TotalDataCount = 0; | |
4576 | pSMB->DataCount = 0; | |
4577 | pSMB->DataOffset = 0; | |
4578 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4579 | /* BB find exact max SMB PDU from sess structure BB */ |
4580 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4581 | pSMB->MaxSetupCount = 0; |
4582 | pSMB->Reserved = 0; | |
4583 | pSMB->Flags = 0; | |
4584 | pSMB->Timeout = 0; | |
4585 | pSMB->Reserved2 = 0; | |
4586 | byte_count = params + 1 /* pad */ ; | |
4587 | pSMB->ParameterCount = cpu_to_le16(params); | |
4588 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4589 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4590 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4591 | pSMB->SetupCount = 1; |
4592 | pSMB->Reserved3 = 0; | |
4593 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4594 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4595 | pSMB->hdr.smb_buf_length += byte_count; | |
4596 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4597 | ||
4598 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4599 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4600 | if (rc) { | |
4601 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4602 | } else { /* decode response */ | |
4603 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4604 | ||
4605 | if (rc || (pSMBr->ByteCount < 13)) { | |
4606 | rc = -EIO; /* bad smb */ | |
4607 | } else { | |
4608 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4609 | response_data = | |
4610 | (FILE_SYSTEM_POSIX_INFO | |
4611 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4612 | data_offset); | |
4613 | FSData->f_bsize = | |
4614 | le32_to_cpu(response_data->BlockSize); | |
4615 | FSData->f_blocks = | |
4616 | le64_to_cpu(response_data->TotalBlocks); | |
4617 | FSData->f_bfree = | |
4618 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4619 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4620 | FSData->f_bavail = FSData->f_bfree; |
4621 | } else { | |
4622 | FSData->f_bavail = | |
50c2f753 | 4623 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4624 | } |
790fe579 | 4625 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4626 | FSData->f_files = |
50c2f753 | 4627 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4628 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4629 | FSData->f_ffree = |
50c2f753 | 4630 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4631 | } |
4632 | } | |
4633 | cifs_buf_release(pSMB); | |
4634 | ||
4635 | if (rc == -EAGAIN) | |
4636 | goto QFSPosixRetry; | |
4637 | ||
4638 | return rc; | |
4639 | } | |
4640 | ||
4641 | ||
50c2f753 SF |
4642 | /* We can not use write of zero bytes trick to |
4643 | set file size due to need for large file support. Also note that | |
4644 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4645 | routine which is only needed to work around a sharing violation bug |
4646 | in Samba which this routine can run into */ | |
4647 | ||
4648 | int | |
4649 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4650 | __u64 size, bool SetAllocation, |
737b758c | 4651 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4652 | { |
4653 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4654 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4655 | struct file_end_of_file_info *parm_data; | |
4656 | int name_len; | |
4657 | int rc = 0; | |
4658 | int bytes_returned = 0; | |
4659 | __u16 params, byte_count, data_count, param_offset, offset; | |
4660 | ||
4661 | cFYI(1, ("In SetEOF")); | |
4662 | SetEOFRetry: | |
4663 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4664 | (void **) &pSMBr); | |
4665 | if (rc) | |
4666 | return rc; | |
4667 | ||
4668 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4669 | name_len = | |
b1a45695 | 4670 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4671 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4672 | name_len++; /* trailing null */ |
4673 | name_len *= 2; | |
3e87d803 | 4674 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4675 | name_len = strnlen(fileName, PATH_MAX); |
4676 | name_len++; /* trailing null */ | |
4677 | strncpy(pSMB->FileName, fileName, name_len); | |
4678 | } | |
4679 | params = 6 + name_len; | |
26f57364 | 4680 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4681 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4682 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4683 | pSMB->MaxSetupCount = 0; |
4684 | pSMB->Reserved = 0; | |
4685 | pSMB->Flags = 0; | |
4686 | pSMB->Timeout = 0; | |
4687 | pSMB->Reserved2 = 0; | |
4688 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4689 | InformationLevel) - 4; |
1da177e4 | 4690 | offset = param_offset + params; |
790fe579 | 4691 | if (SetAllocation) { |
50c2f753 SF |
4692 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4693 | pSMB->InformationLevel = | |
4694 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4695 | else | |
4696 | pSMB->InformationLevel = | |
4697 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4698 | } else /* Set File Size */ { | |
1da177e4 LT |
4699 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4700 | pSMB->InformationLevel = | |
50c2f753 | 4701 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4702 | else |
4703 | pSMB->InformationLevel = | |
50c2f753 | 4704 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4705 | } |
4706 | ||
4707 | parm_data = | |
4708 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4709 | offset); | |
4710 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4711 | pSMB->DataOffset = cpu_to_le16(offset); | |
4712 | pSMB->SetupCount = 1; | |
4713 | pSMB->Reserved3 = 0; | |
4714 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4715 | byte_count = 3 /* pad */ + params + data_count; | |
4716 | pSMB->DataCount = cpu_to_le16(data_count); | |
4717 | pSMB->TotalDataCount = pSMB->DataCount; | |
4718 | pSMB->ParameterCount = cpu_to_le16(params); | |
4719 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4720 | pSMB->Reserved4 = 0; | |
4721 | pSMB->hdr.smb_buf_length += byte_count; | |
4722 | parm_data->FileSize = cpu_to_le64(size); | |
4723 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4724 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4725 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4726 | if (rc) |
1da177e4 | 4727 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); |
1da177e4 LT |
4728 | |
4729 | cifs_buf_release(pSMB); | |
4730 | ||
4731 | if (rc == -EAGAIN) | |
4732 | goto SetEOFRetry; | |
4733 | ||
4734 | return rc; | |
4735 | } | |
4736 | ||
4737 | int | |
50c2f753 | 4738 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4739 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4740 | { |
4741 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4742 | char *data_offset; |
4743 | struct file_end_of_file_info *parm_data; | |
4744 | int rc = 0; | |
1da177e4 LT |
4745 | __u16 params, param_offset, offset, byte_count, count; |
4746 | ||
4747 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
4748 | (long long)size)); | |
cd63499c SF |
4749 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4750 | ||
1da177e4 LT |
4751 | if (rc) |
4752 | return rc; | |
4753 | ||
4754 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4755 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4756 | |
1da177e4 LT |
4757 | params = 6; |
4758 | pSMB->MaxSetupCount = 0; | |
4759 | pSMB->Reserved = 0; | |
4760 | pSMB->Flags = 0; | |
4761 | pSMB->Timeout = 0; | |
4762 | pSMB->Reserved2 = 0; | |
4763 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4764 | offset = param_offset + params; | |
4765 | ||
50c2f753 | 4766 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 LT |
4767 | |
4768 | count = sizeof(struct file_end_of_file_info); | |
4769 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4770 | /* BB find exact max SMB PDU from sess structure BB */ |
4771 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4772 | pSMB->SetupCount = 1; |
4773 | pSMB->Reserved3 = 0; | |
4774 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4775 | byte_count = 3 /* pad */ + params + count; | |
4776 | pSMB->DataCount = cpu_to_le16(count); | |
4777 | pSMB->ParameterCount = cpu_to_le16(params); | |
4778 | pSMB->TotalDataCount = pSMB->DataCount; | |
4779 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4780 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4781 | parm_data = | |
50c2f753 SF |
4782 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4783 | + offset); | |
1da177e4 LT |
4784 | pSMB->DataOffset = cpu_to_le16(offset); |
4785 | parm_data->FileSize = cpu_to_le64(size); | |
4786 | pSMB->Fid = fid; | |
790fe579 | 4787 | if (SetAllocation) { |
1da177e4 LT |
4788 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4789 | pSMB->InformationLevel = | |
4790 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4791 | else | |
4792 | pSMB->InformationLevel = | |
4793 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4794 | } else /* Set File Size */ { |
1da177e4 LT |
4795 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4796 | pSMB->InformationLevel = | |
50c2f753 | 4797 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4798 | else |
4799 | pSMB->InformationLevel = | |
50c2f753 | 4800 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4801 | } |
4802 | pSMB->Reserved4 = 0; | |
4803 | pSMB->hdr.smb_buf_length += byte_count; | |
4804 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
133672ef | 4805 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 LT |
4806 | if (rc) { |
4807 | cFYI(1, | |
4808 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
4809 | rc)); | |
4810 | } | |
4811 | ||
50c2f753 | 4812 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4813 | since file handle passed in no longer valid */ |
4814 | ||
4815 | return rc; | |
4816 | } | |
4817 | ||
50c2f753 | 4818 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4819 | an open handle, rather than by pathname - this is awkward due to |
4820 | potential access conflicts on the open, but it is unavoidable for these | |
4821 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4822 | time and resort to the original setpathinfo level which takes the ancient | |
4823 | DOS time format with 2 second granularity */ | |
4824 | int | |
2dd2dfa0 JL |
4825 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
4826 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
4827 | { |
4828 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4829 | char *data_offset; |
4830 | int rc = 0; | |
1da177e4 LT |
4831 | __u16 params, param_offset, offset, byte_count, count; |
4832 | ||
4833 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
cd63499c SF |
4834 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4835 | ||
1da177e4 LT |
4836 | if (rc) |
4837 | return rc; | |
4838 | ||
2dd2dfa0 JL |
4839 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
4840 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4841 | |
1da177e4 LT |
4842 | params = 6; |
4843 | pSMB->MaxSetupCount = 0; | |
4844 | pSMB->Reserved = 0; | |
4845 | pSMB->Flags = 0; | |
4846 | pSMB->Timeout = 0; | |
4847 | pSMB->Reserved2 = 0; | |
4848 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4849 | offset = param_offset + params; | |
4850 | ||
50c2f753 | 4851 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 4852 | |
26f57364 | 4853 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4854 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4855 | /* BB find max SMB PDU from sess */ |
4856 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4857 | pSMB->SetupCount = 1; |
4858 | pSMB->Reserved3 = 0; | |
4859 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4860 | byte_count = 3 /* pad */ + params + count; | |
4861 | pSMB->DataCount = cpu_to_le16(count); | |
4862 | pSMB->ParameterCount = cpu_to_le16(params); | |
4863 | pSMB->TotalDataCount = pSMB->DataCount; | |
4864 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4865 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4866 | pSMB->DataOffset = cpu_to_le16(offset); | |
4867 | pSMB->Fid = fid; | |
4868 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4869 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4870 | else | |
4871 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4872 | pSMB->Reserved4 = 0; | |
4873 | pSMB->hdr.smb_buf_length += byte_count; | |
4874 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 4875 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 4876 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4877 | if (rc) |
50c2f753 | 4878 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); |
1da177e4 | 4879 | |
50c2f753 | 4880 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4881 | since file handle passed in no longer valid */ |
4882 | ||
4883 | return rc; | |
4884 | } | |
4885 | ||
6d22f098 JL |
4886 | int |
4887 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
4888 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
4889 | { | |
4890 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4891 | char *data_offset; | |
4892 | int rc = 0; | |
4893 | __u16 params, param_offset, offset, byte_count, count; | |
4894 | ||
4895 | cFYI(1, ("Set File Disposition (via SetFileInfo)")); | |
4896 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
4897 | ||
4898 | if (rc) | |
4899 | return rc; | |
4900 | ||
4901 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4902 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
4903 | ||
4904 | params = 6; | |
4905 | pSMB->MaxSetupCount = 0; | |
4906 | pSMB->Reserved = 0; | |
4907 | pSMB->Flags = 0; | |
4908 | pSMB->Timeout = 0; | |
4909 | pSMB->Reserved2 = 0; | |
4910 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4911 | offset = param_offset + params; | |
4912 | ||
4913 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4914 | ||
4915 | count = 1; | |
4916 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4917 | /* BB find max SMB PDU from sess */ | |
4918 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4919 | pSMB->SetupCount = 1; | |
4920 | pSMB->Reserved3 = 0; | |
4921 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4922 | byte_count = 3 /* pad */ + params + count; | |
4923 | pSMB->DataCount = cpu_to_le16(count); | |
4924 | pSMB->ParameterCount = cpu_to_le16(params); | |
4925 | pSMB->TotalDataCount = pSMB->DataCount; | |
4926 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4927 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4928 | pSMB->DataOffset = cpu_to_le16(offset); | |
4929 | pSMB->Fid = fid; | |
4930 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
4931 | pSMB->Reserved4 = 0; | |
4932 | pSMB->hdr.smb_buf_length += byte_count; | |
4933 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4934 | *data_offset = delete_file ? 1 : 0; | |
4935 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
4936 | if (rc) | |
4937 | cFYI(1, ("Send error in SetFileDisposition = %d", rc)); | |
4938 | ||
4939 | return rc; | |
4940 | } | |
1da177e4 LT |
4941 | |
4942 | int | |
6fc000e5 JL |
4943 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
4944 | const char *fileName, const FILE_BASIC_INFO *data, | |
4945 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
4946 | { |
4947 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4948 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4949 | int name_len; | |
4950 | int rc = 0; | |
4951 | int bytes_returned = 0; | |
4952 | char *data_offset; | |
4953 | __u16 params, param_offset, offset, byte_count, count; | |
4954 | ||
4955 | cFYI(1, ("In SetTimes")); | |
4956 | ||
4957 | SetTimesRetry: | |
4958 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4959 | (void **) &pSMBr); | |
4960 | if (rc) | |
4961 | return rc; | |
4962 | ||
4963 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4964 | name_len = | |
b1a45695 | 4965 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4966 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4967 | name_len++; /* trailing null */ |
4968 | name_len *= 2; | |
50c2f753 | 4969 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4970 | name_len = strnlen(fileName, PATH_MAX); |
4971 | name_len++; /* trailing null */ | |
4972 | strncpy(pSMB->FileName, fileName, name_len); | |
4973 | } | |
4974 | ||
4975 | params = 6 + name_len; | |
26f57364 | 4976 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4977 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4978 | /* BB find max SMB PDU from sess structure BB */ |
4979 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4980 | pSMB->MaxSetupCount = 0; |
4981 | pSMB->Reserved = 0; | |
4982 | pSMB->Flags = 0; | |
4983 | pSMB->Timeout = 0; | |
4984 | pSMB->Reserved2 = 0; | |
4985 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4986 | InformationLevel) - 4; |
1da177e4 LT |
4987 | offset = param_offset + params; |
4988 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4989 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4990 | pSMB->DataOffset = cpu_to_le16(offset); | |
4991 | pSMB->SetupCount = 1; | |
4992 | pSMB->Reserved3 = 0; | |
4993 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4994 | byte_count = 3 /* pad */ + params + count; | |
4995 | ||
4996 | pSMB->DataCount = cpu_to_le16(count); | |
4997 | pSMB->ParameterCount = cpu_to_le16(params); | |
4998 | pSMB->TotalDataCount = pSMB->DataCount; | |
4999 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5000 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5001 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5002 | else | |
5003 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5004 | pSMB->Reserved4 = 0; | |
5005 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 5006 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5007 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5008 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5009 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5010 | if (rc) |
1da177e4 | 5011 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); |
1da177e4 LT |
5012 | |
5013 | cifs_buf_release(pSMB); | |
5014 | ||
5015 | if (rc == -EAGAIN) | |
5016 | goto SetTimesRetry; | |
5017 | ||
5018 | return rc; | |
5019 | } | |
5020 | ||
5021 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5022 | /* Can be used to set attributes */ | |
5023 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5024 | handling it anyway and NT4 was what we thought it would be needed for | |
5025 | Do not delete it until we prove whether needed for Win9x though */ | |
5026 | int | |
5027 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5028 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5029 | { | |
5030 | SETATTR_REQ *pSMB = NULL; | |
5031 | SETATTR_RSP *pSMBr = NULL; | |
5032 | int rc = 0; | |
5033 | int bytes_returned; | |
5034 | int name_len; | |
5035 | ||
5036 | cFYI(1, ("In SetAttrLegacy")); | |
5037 | ||
5038 | SetAttrLgcyRetry: | |
5039 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5040 | (void **) &pSMBr); | |
5041 | if (rc) | |
5042 | return rc; | |
5043 | ||
5044 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5045 | name_len = | |
50c2f753 | 5046 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5047 | PATH_MAX, nls_codepage); |
5048 | name_len++; /* trailing null */ | |
5049 | name_len *= 2; | |
50c2f753 | 5050 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5051 | name_len = strnlen(fileName, PATH_MAX); |
5052 | name_len++; /* trailing null */ | |
5053 | strncpy(pSMB->fileName, fileName, name_len); | |
5054 | } | |
5055 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5056 | pSMB->BufferFormat = 0x04; | |
5057 | pSMB->hdr.smb_buf_length += name_len + 1; | |
5058 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
5059 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5060 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5061 | if (rc) |
1da177e4 | 5062 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); |
1da177e4 LT |
5063 | |
5064 | cifs_buf_release(pSMB); | |
5065 | ||
5066 | if (rc == -EAGAIN) | |
5067 | goto SetAttrLgcyRetry; | |
5068 | ||
5069 | return rc; | |
5070 | } | |
5071 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5072 | ||
5073 | int | |
4e1e7fb9 | 5074 | CIFSSMBUnixSetInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
063ea279 | 5075 | const struct cifs_unix_set_info_args *args, |
4e1e7fb9 | 5076 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5077 | { |
5078 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5079 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5080 | int name_len; | |
5081 | int rc = 0; | |
5082 | int bytes_returned = 0; | |
5083 | FILE_UNIX_BASIC_INFO *data_offset; | |
5084 | __u16 params, param_offset, offset, count, byte_count; | |
4e1e7fb9 | 5085 | __u64 mode = args->mode; |
1da177e4 LT |
5086 | |
5087 | cFYI(1, ("In SetUID/GID/Mode")); | |
5088 | setPermsRetry: | |
5089 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5090 | (void **) &pSMBr); | |
5091 | if (rc) | |
5092 | return rc; | |
5093 | ||
5094 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5095 | name_len = | |
50c2f753 | 5096 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5097 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5098 | name_len++; /* trailing null */ |
5099 | name_len *= 2; | |
3e87d803 | 5100 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5101 | name_len = strnlen(fileName, PATH_MAX); |
5102 | name_len++; /* trailing null */ | |
5103 | strncpy(pSMB->FileName, fileName, name_len); | |
5104 | } | |
5105 | ||
5106 | params = 6 + name_len; | |
26f57364 | 5107 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5108 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5109 | /* BB find max SMB PDU from sess structure BB */ |
5110 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5111 | pSMB->MaxSetupCount = 0; |
5112 | pSMB->Reserved = 0; | |
5113 | pSMB->Flags = 0; | |
5114 | pSMB->Timeout = 0; | |
5115 | pSMB->Reserved2 = 0; | |
5116 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5117 | InformationLevel) - 4; |
1da177e4 LT |
5118 | offset = param_offset + params; |
5119 | data_offset = | |
5120 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5121 | offset); | |
5122 | memset(data_offset, 0, count); | |
5123 | pSMB->DataOffset = cpu_to_le16(offset); | |
5124 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5125 | pSMB->SetupCount = 1; | |
5126 | pSMB->Reserved3 = 0; | |
5127 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5128 | byte_count = 3 /* pad */ + params + count; | |
5129 | pSMB->ParameterCount = cpu_to_le16(params); | |
5130 | pSMB->DataCount = cpu_to_le16(count); | |
5131 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5132 | pSMB->TotalDataCount = pSMB->DataCount; | |
5133 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5134 | pSMB->Reserved4 = 0; | |
5135 | pSMB->hdr.smb_buf_length += byte_count; | |
c7af1857 SF |
5136 | /* Samba server ignores set of file size to zero due to bugs in some |
5137 | older clients, but we should be precise - we use SetFileSize to | |
5138 | set file size and do not want to truncate file size to zero | |
5139 | accidently as happened on one Samba server beta by putting | |
50c2f753 | 5140 | zero instead of -1 here */ |
4e1e7fb9 JL |
5141 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); |
5142 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5143 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5144 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5145 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5146 | data_offset->Uid = cpu_to_le64(args->uid); | |
5147 | data_offset->Gid = cpu_to_le64(args->gid); | |
1da177e4 | 5148 | /* better to leave device as zero when it is */ |
4e1e7fb9 JL |
5149 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); |
5150 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
1da177e4 | 5151 | data_offset->Permissions = cpu_to_le64(mode); |
50c2f753 | 5152 | |
790fe579 | 5153 | if (S_ISREG(mode)) |
1da177e4 | 5154 | data_offset->Type = cpu_to_le32(UNIX_FILE); |
790fe579 | 5155 | else if (S_ISDIR(mode)) |
1da177e4 | 5156 | data_offset->Type = cpu_to_le32(UNIX_DIR); |
790fe579 | 5157 | else if (S_ISLNK(mode)) |
1da177e4 | 5158 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); |
790fe579 | 5159 | else if (S_ISCHR(mode)) |
1da177e4 | 5160 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); |
790fe579 | 5161 | else if (S_ISBLK(mode)) |
1da177e4 | 5162 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); |
790fe579 | 5163 | else if (S_ISFIFO(mode)) |
1da177e4 | 5164 | data_offset->Type = cpu_to_le32(UNIX_FIFO); |
790fe579 | 5165 | else if (S_ISSOCK(mode)) |
1da177e4 LT |
5166 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); |
5167 | ||
5168 | ||
5169 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5170 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5171 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5172 | if (rc) |
1da177e4 | 5173 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); |
1da177e4 | 5174 | |
0d817bc0 | 5175 | cifs_buf_release(pSMB); |
1da177e4 LT |
5176 | if (rc == -EAGAIN) |
5177 | goto setPermsRetry; | |
5178 | return rc; | |
5179 | } | |
5180 | ||
50c2f753 | 5181 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
167a251a | 5182 | const int notify_subdirs, const __u16 netfid, |
50c2f753 | 5183 | __u32 filter, struct file *pfile, int multishot, |
167a251a | 5184 | const struct nls_table *nls_codepage) |
1da177e4 LT |
5185 | { |
5186 | int rc = 0; | |
50c2f753 SF |
5187 | struct smb_com_transaction_change_notify_req *pSMB = NULL; |
5188 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
abb15b8a | 5189 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
5190 | int bytes_returned; |
5191 | ||
50c2f753 | 5192 | cFYI(1, ("In CIFSSMBNotify for file handle %d", (int)netfid)); |
1da177e4 | 5193 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
50c2f753 | 5194 | (void **) &pSMBr); |
1da177e4 LT |
5195 | if (rc) |
5196 | return rc; | |
5197 | ||
5198 | pSMB->TotalParameterCount = 0 ; | |
5199 | pSMB->TotalDataCount = 0; | |
5200 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5201 | /* BB find exact data count max from sess structure BB */ | |
5202 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
5203 | /* BB VERIFY verify which is correct for above BB */ |
5204 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5205 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5206 | ||
1da177e4 LT |
5207 | pSMB->MaxSetupCount = 4; |
5208 | pSMB->Reserved = 0; | |
5209 | pSMB->ParameterOffset = 0; | |
5210 | pSMB->DataCount = 0; | |
5211 | pSMB->DataOffset = 0; | |
5212 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5213 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5214 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 5215 | if (notify_subdirs) |
1da177e4 LT |
5216 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
5217 | pSMB->Reserved2 = 0; | |
5218 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5219 | pSMB->Fid = netfid; /* file handle always le */ | |
5220 | pSMB->ByteCount = 0; | |
5221 | ||
5222 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef SF |
5223 | (struct smb_hdr *)pSMBr, &bytes_returned, |
5224 | CIFS_ASYNC_OP); | |
1da177e4 LT |
5225 | if (rc) { |
5226 | cFYI(1, ("Error in Notify = %d", rc)); | |
ff5dbd9e SF |
5227 | } else { |
5228 | /* Add file to outstanding requests */ | |
50c2f753 | 5229 | /* BB change to kmem cache alloc */ |
5cbded58 | 5230 | dnotify_req = kmalloc( |
47c786e7 SF |
5231 | sizeof(struct dir_notify_req), |
5232 | GFP_KERNEL); | |
790fe579 | 5233 | if (dnotify_req) { |
47c786e7 SF |
5234 | dnotify_req->Pid = pSMB->hdr.Pid; |
5235 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5236 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5237 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5238 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5239 | dnotify_req->netfid = netfid; | |
5240 | dnotify_req->pfile = pfile; | |
5241 | dnotify_req->filter = filter; | |
5242 | dnotify_req->multishot = multishot; | |
5243 | spin_lock(&GlobalMid_Lock); | |
50c2f753 | 5244 | list_add_tail(&dnotify_req->lhead, |
47c786e7 SF |
5245 | &GlobalDnotifyReqList); |
5246 | spin_unlock(&GlobalMid_Lock); | |
50c2f753 | 5247 | } else |
47c786e7 | 5248 | rc = -ENOMEM; |
1da177e4 LT |
5249 | } |
5250 | cifs_buf_release(pSMB); | |
50c2f753 | 5251 | return rc; |
1da177e4 LT |
5252 | } |
5253 | #ifdef CONFIG_CIFS_XATTR | |
5254 | ssize_t | |
5255 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
5256 | const unsigned char *searchName, | |
50c2f753 | 5257 | char *EAData, size_t buf_size, |
737b758c | 5258 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5259 | { |
5260 | /* BB assumes one setup word */ | |
5261 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5262 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5263 | int rc = 0; | |
5264 | int bytes_returned; | |
5265 | int name_len; | |
50c2f753 SF |
5266 | struct fea *temp_fea; |
5267 | char *temp_ptr; | |
1da177e4 LT |
5268 | __u16 params, byte_count; |
5269 | ||
5270 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
5271 | QAllEAsRetry: | |
5272 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5273 | (void **) &pSMBr); | |
5274 | if (rc) | |
5275 | return rc; | |
5276 | ||
5277 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5278 | name_len = | |
50c2f753 | 5279 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5280 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5281 | name_len++; /* trailing null */ |
5282 | name_len *= 2; | |
5283 | } else { /* BB improve the check for buffer overruns BB */ | |
5284 | name_len = strnlen(searchName, PATH_MAX); | |
5285 | name_len++; /* trailing null */ | |
5286 | strncpy(pSMB->FileName, searchName, name_len); | |
5287 | } | |
5288 | ||
50c2f753 | 5289 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
5290 | pSMB->TotalDataCount = 0; |
5291 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5292 | /* BB find exact max SMB PDU from sess structure BB */ |
5293 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
5294 | pSMB->MaxSetupCount = 0; |
5295 | pSMB->Reserved = 0; | |
5296 | pSMB->Flags = 0; | |
5297 | pSMB->Timeout = 0; | |
5298 | pSMB->Reserved2 = 0; | |
5299 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5300 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5301 | pSMB->DataCount = 0; |
5302 | pSMB->DataOffset = 0; | |
5303 | pSMB->SetupCount = 1; | |
5304 | pSMB->Reserved3 = 0; | |
5305 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5306 | byte_count = params + 1 /* pad */ ; | |
5307 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5308 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5309 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5310 | pSMB->Reserved4 = 0; | |
5311 | pSMB->hdr.smb_buf_length += byte_count; | |
5312 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5313 | ||
5314 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5315 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5316 | if (rc) { | |
5317 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
5318 | } else { /* decode response */ | |
5319 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5320 | ||
5321 | /* BB also check enough total bytes returned */ | |
5322 | /* BB we need to improve the validity checking | |
5323 | of these trans2 responses */ | |
50c2f753 | 5324 | if (rc || (pSMBr->ByteCount < 4)) |
1da177e4 LT |
5325 | rc = -EIO; /* bad smb */ |
5326 | /* else if (pFindData){ | |
5327 | memcpy((char *) pFindData, | |
5328 | (char *) &pSMBr->hdr.Protocol + | |
5329 | data_offset, kl); | |
5330 | }*/ else { | |
5331 | /* check that length of list is not more than bcc */ | |
5332 | /* check that each entry does not go beyond length | |
5333 | of list */ | |
5334 | /* check that each element of each entry does not | |
5335 | go beyond end of list */ | |
5336 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 5337 | struct fealist *ea_response_data; |
1da177e4 LT |
5338 | rc = 0; |
5339 | /* validate_trans2_offsets() */ | |
790fe579 | 5340 | /* BB check if start of smb + data_offset > &bcc+ bcc */ |
1da177e4 LT |
5341 | ea_response_data = (struct fealist *) |
5342 | (((char *) &pSMBr->hdr.Protocol) + | |
5343 | data_offset); | |
5344 | name_len = le32_to_cpu(ea_response_data->list_len); | |
50c2f753 | 5345 | cFYI(1, ("ea length %d", name_len)); |
790fe579 | 5346 | if (name_len <= 8) { |
1da177e4 | 5347 | /* returned EA size zeroed at top of function */ |
50c2f753 | 5348 | cFYI(1, ("empty EA list returned from server")); |
1da177e4 LT |
5349 | } else { |
5350 | /* account for ea list len */ | |
5351 | name_len -= 4; | |
5352 | temp_fea = ea_response_data->list; | |
5353 | temp_ptr = (char *)temp_fea; | |
50c2f753 | 5354 | while (name_len > 0) { |
1da177e4 LT |
5355 | __u16 value_len; |
5356 | name_len -= 4; | |
5357 | temp_ptr += 4; | |
5358 | rc += temp_fea->name_len; | |
5359 | /* account for prefix user. and trailing null */ | |
790fe579 SF |
5360 | rc = rc + 5 + 1; |
5361 | if (rc < (int)buf_size) { | |
50c2f753 SF |
5362 | memcpy(EAData, "user.", 5); |
5363 | EAData += 5; | |
5364 | memcpy(EAData, temp_ptr, | |
5365 | temp_fea->name_len); | |
5366 | EAData += temp_fea->name_len; | |
1da177e4 LT |
5367 | /* null terminate name */ |
5368 | *EAData = 0; | |
5369 | EAData = EAData + 1; | |
790fe579 | 5370 | } else if (buf_size == 0) { |
1da177e4 LT |
5371 | /* skip copy - calc size only */ |
5372 | } else { | |
5373 | /* stop before overrun buffer */ | |
5374 | rc = -ERANGE; | |
5375 | break; | |
5376 | } | |
5377 | name_len -= temp_fea->name_len; | |
5378 | temp_ptr += temp_fea->name_len; | |
5379 | /* account for trailing null */ | |
5380 | name_len--; | |
5381 | temp_ptr++; | |
50c2f753 SF |
5382 | value_len = |
5383 | le16_to_cpu(temp_fea->value_len); | |
1da177e4 LT |
5384 | name_len -= value_len; |
5385 | temp_ptr += value_len; | |
50c2f753 SF |
5386 | /* BB check that temp_ptr is still |
5387 | within the SMB BB*/ | |
5388 | ||
5389 | /* no trailing null to account for | |
5390 | in value len */ | |
1da177e4 LT |
5391 | /* go on to next EA */ |
5392 | temp_fea = (struct fea *)temp_ptr; | |
5393 | } | |
5394 | } | |
5395 | } | |
5396 | } | |
0d817bc0 | 5397 | cifs_buf_release(pSMB); |
1da177e4 LT |
5398 | if (rc == -EAGAIN) |
5399 | goto QAllEAsRetry; | |
5400 | ||
5401 | return (ssize_t)rc; | |
5402 | } | |
5403 | ||
50c2f753 SF |
5404 | ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon, |
5405 | const unsigned char *searchName, const unsigned char *ea_name, | |
5406 | unsigned char *ea_value, size_t buf_size, | |
737b758c | 5407 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5408 | { |
5409 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5410 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5411 | int rc = 0; | |
5412 | int bytes_returned; | |
5413 | int name_len; | |
50c2f753 SF |
5414 | struct fea *temp_fea; |
5415 | char *temp_ptr; | |
1da177e4 LT |
5416 | __u16 params, byte_count; |
5417 | ||
5418 | cFYI(1, ("In Query EA path %s", searchName)); | |
5419 | QEARetry: | |
5420 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5421 | (void **) &pSMBr); | |
5422 | if (rc) | |
5423 | return rc; | |
5424 | ||
5425 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5426 | name_len = | |
50c2f753 | 5427 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5428 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5429 | name_len++; /* trailing null */ |
5430 | name_len *= 2; | |
5431 | } else { /* BB improve the check for buffer overruns BB */ | |
5432 | name_len = strnlen(searchName, PATH_MAX); | |
5433 | name_len++; /* trailing null */ | |
5434 | strncpy(pSMB->FileName, searchName, name_len); | |
5435 | } | |
5436 | ||
50c2f753 | 5437 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
5438 | pSMB->TotalDataCount = 0; |
5439 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5440 | /* BB find exact max SMB PDU from sess structure BB */ |
5441 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
5442 | pSMB->MaxSetupCount = 0; |
5443 | pSMB->Reserved = 0; | |
5444 | pSMB->Flags = 0; | |
5445 | pSMB->Timeout = 0; | |
5446 | pSMB->Reserved2 = 0; | |
5447 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5448 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5449 | pSMB->DataCount = 0; |
5450 | pSMB->DataOffset = 0; | |
5451 | pSMB->SetupCount = 1; | |
5452 | pSMB->Reserved3 = 0; | |
5453 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5454 | byte_count = params + 1 /* pad */ ; | |
5455 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5456 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5457 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5458 | pSMB->Reserved4 = 0; | |
5459 | pSMB->hdr.smb_buf_length += byte_count; | |
5460 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5461 | ||
5462 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5463 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5464 | if (rc) { | |
5465 | cFYI(1, ("Send error in Query EA = %d", rc)); | |
5466 | } else { /* decode response */ | |
5467 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5468 | ||
5469 | /* BB also check enough total bytes returned */ | |
5470 | /* BB we need to improve the validity checking | |
5471 | of these trans2 responses */ | |
50c2f753 | 5472 | if (rc || (pSMBr->ByteCount < 4)) |
1da177e4 LT |
5473 | rc = -EIO; /* bad smb */ |
5474 | /* else if (pFindData){ | |
5475 | memcpy((char *) pFindData, | |
5476 | (char *) &pSMBr->hdr.Protocol + | |
5477 | data_offset, kl); | |
5478 | }*/ else { | |
5479 | /* check that length of list is not more than bcc */ | |
5480 | /* check that each entry does not go beyond length | |
5481 | of list */ | |
5482 | /* check that each element of each entry does not | |
5483 | go beyond end of list */ | |
5484 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 5485 | struct fealist *ea_response_data; |
1da177e4 LT |
5486 | rc = -ENODATA; |
5487 | /* validate_trans2_offsets() */ | |
790fe579 | 5488 | /* BB check if start of smb + data_offset > &bcc+ bcc*/ |
1da177e4 LT |
5489 | ea_response_data = (struct fealist *) |
5490 | (((char *) &pSMBr->hdr.Protocol) + | |
5491 | data_offset); | |
5492 | name_len = le32_to_cpu(ea_response_data->list_len); | |
50c2f753 | 5493 | cFYI(1, ("ea length %d", name_len)); |
790fe579 | 5494 | if (name_len <= 8) { |
1da177e4 | 5495 | /* returned EA size zeroed at top of function */ |
50c2f753 | 5496 | cFYI(1, ("empty EA list returned from server")); |
1da177e4 LT |
5497 | } else { |
5498 | /* account for ea list len */ | |
5499 | name_len -= 4; | |
5500 | temp_fea = ea_response_data->list; | |
5501 | temp_ptr = (char *)temp_fea; | |
5502 | /* loop through checking if we have a matching | |
5503 | name and then return the associated value */ | |
50c2f753 | 5504 | while (name_len > 0) { |
1da177e4 LT |
5505 | __u16 value_len; |
5506 | name_len -= 4; | |
5507 | temp_ptr += 4; | |
50c2f753 SF |
5508 | value_len = |
5509 | le16_to_cpu(temp_fea->value_len); | |
5510 | /* BB validate that value_len falls within SMB, | |
5511 | even though maximum for name_len is 255 */ | |
790fe579 | 5512 | if (memcmp(temp_fea->name, ea_name, |
1da177e4 LT |
5513 | temp_fea->name_len) == 0) { |
5514 | /* found a match */ | |
5515 | rc = value_len; | |
5516 | /* account for prefix user. and trailing null */ | |
790fe579 | 5517 | if (rc <= (int)buf_size) { |
1da177e4 LT |
5518 | memcpy(ea_value, |
5519 | temp_fea->name+temp_fea->name_len+1, | |
5520 | rc); | |
50c2f753 SF |
5521 | /* ea values, unlike ea |
5522 | names, are not null | |
5523 | terminated */ | |
790fe579 | 5524 | } else if (buf_size == 0) { |
1da177e4 LT |
5525 | /* skip copy - calc size only */ |
5526 | } else { | |
50c2f753 | 5527 | /* stop before overrun buffer */ |
1da177e4 LT |
5528 | rc = -ERANGE; |
5529 | } | |
5530 | break; | |
5531 | } | |
5532 | name_len -= temp_fea->name_len; | |
5533 | temp_ptr += temp_fea->name_len; | |
5534 | /* account for trailing null */ | |
5535 | name_len--; | |
5536 | temp_ptr++; | |
5537 | name_len -= value_len; | |
5538 | temp_ptr += value_len; | |
50c2f753 SF |
5539 | /* No trailing null to account for in |
5540 | value_len. Go on to next EA */ | |
1da177e4 LT |
5541 | temp_fea = (struct fea *)temp_ptr; |
5542 | } | |
50c2f753 | 5543 | } |
1da177e4 LT |
5544 | } |
5545 | } | |
0d817bc0 | 5546 | cifs_buf_release(pSMB); |
1da177e4 LT |
5547 | if (rc == -EAGAIN) |
5548 | goto QEARetry; | |
5549 | ||
5550 | return (ssize_t)rc; | |
5551 | } | |
5552 | ||
5553 | int | |
5554 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5555 | const char *ea_name, const void *ea_value, |
5556 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5557 | int remap) | |
1da177e4 LT |
5558 | { |
5559 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5560 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5561 | struct fealist *parm_data; | |
5562 | int name_len; | |
5563 | int rc = 0; | |
5564 | int bytes_returned = 0; | |
5565 | __u16 params, param_offset, byte_count, offset, count; | |
5566 | ||
5567 | cFYI(1, ("In SetEA")); | |
5568 | SetEARetry: | |
5569 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5570 | (void **) &pSMBr); | |
5571 | if (rc) | |
5572 | return rc; | |
5573 | ||
5574 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5575 | name_len = | |
50c2f753 | 5576 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5577 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5578 | name_len++; /* trailing null */ |
5579 | name_len *= 2; | |
50c2f753 | 5580 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5581 | name_len = strnlen(fileName, PATH_MAX); |
5582 | name_len++; /* trailing null */ | |
5583 | strncpy(pSMB->FileName, fileName, name_len); | |
5584 | } | |
5585 | ||
5586 | params = 6 + name_len; | |
5587 | ||
5588 | /* done calculating parms using name_len of file name, | |
5589 | now use name_len to calculate length of ea name | |
5590 | we are going to create in the inode xattrs */ | |
790fe579 | 5591 | if (ea_name == NULL) |
1da177e4 LT |
5592 | name_len = 0; |
5593 | else | |
50c2f753 | 5594 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5595 | |
dae5dbdb | 5596 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5597 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5598 | /* BB find max SMB PDU from sess */ |
5599 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5600 | pSMB->MaxSetupCount = 0; |
5601 | pSMB->Reserved = 0; | |
5602 | pSMB->Flags = 0; | |
5603 | pSMB->Timeout = 0; | |
5604 | pSMB->Reserved2 = 0; | |
5605 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5606 | InformationLevel) - 4; |
1da177e4 LT |
5607 | offset = param_offset + params; |
5608 | pSMB->InformationLevel = | |
5609 | cpu_to_le16(SMB_SET_FILE_EA); | |
5610 | ||
5611 | parm_data = | |
5612 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5613 | offset); | |
5614 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5615 | pSMB->DataOffset = cpu_to_le16(offset); | |
5616 | pSMB->SetupCount = 1; | |
5617 | pSMB->Reserved3 = 0; | |
5618 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5619 | byte_count = 3 /* pad */ + params + count; | |
5620 | pSMB->DataCount = cpu_to_le16(count); | |
5621 | parm_data->list_len = cpu_to_le32(count); | |
5622 | parm_data->list[0].EA_flags = 0; | |
5623 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5624 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5625 | /* EA names are always ASCII */ |
790fe579 | 5626 | if (ea_name) |
50c2f753 | 5627 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5628 | parm_data->list[0].name[name_len] = 0; |
5629 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5630 | /* caller ensures that ea_value_len is less than 64K but | |
5631 | we need to ensure that it fits within the smb */ | |
5632 | ||
50c2f753 SF |
5633 | /*BB add length check to see if it would fit in |
5634 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5635 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5636 | if (ea_value_len) | |
50c2f753 SF |
5637 | memcpy(parm_data->list[0].name+name_len+1, |
5638 | ea_value, ea_value_len); | |
1da177e4 LT |
5639 | |
5640 | pSMB->TotalDataCount = pSMB->DataCount; | |
5641 | pSMB->ParameterCount = cpu_to_le16(params); | |
5642 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5643 | pSMB->Reserved4 = 0; | |
5644 | pSMB->hdr.smb_buf_length += byte_count; | |
5645 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5646 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5647 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5648 | if (rc) |
1da177e4 | 5649 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); |
1da177e4 LT |
5650 | |
5651 | cifs_buf_release(pSMB); | |
5652 | ||
5653 | if (rc == -EAGAIN) | |
5654 | goto SetEARetry; | |
5655 | ||
5656 | return rc; | |
5657 | } | |
5658 | ||
5659 | #endif |