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