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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
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> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 LT |
34 | #include <linux/posix_acl_xattr.h> |
35 | #include <asm/uaccess.h> | |
36 | #include "cifspdu.h" | |
37 | #include "cifsglob.h" | |
d0d66c44 | 38 | #include "cifsacl.h" |
1da177e4 LT |
39 | #include "cifsproto.h" |
40 | #include "cifs_unicode.h" | |
41 | #include "cifs_debug.h" | |
42 | ||
43 | #ifdef CONFIG_CIFS_POSIX | |
44 | static struct { | |
45 | int index; | |
46 | char *name; | |
47 | } protocols[] = { | |
3979877e SF |
48 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
49 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 50 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 51 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 52 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 53 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
54 | {BAD_PROT, "\2"} |
55 | }; | |
56 | #else | |
57 | static struct { | |
58 | int index; | |
59 | char *name; | |
60 | } protocols[] = { | |
3979877e SF |
61 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
62 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 63 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 64 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 65 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
66 | {BAD_PROT, "\2"} |
67 | }; | |
68 | #endif | |
69 | ||
3979877e SF |
70 | /* define the number of elements in the cifs dialect array */ |
71 | #ifdef CONFIG_CIFS_POSIX | |
72 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 73 | #define CIFS_NUM_PROT 4 |
3979877e SF |
74 | #else |
75 | #define CIFS_NUM_PROT 2 | |
76 | #endif /* CIFS_WEAK_PW_HASH */ | |
77 | #else /* not posix */ | |
78 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 79 | #define CIFS_NUM_PROT 3 |
3979877e SF |
80 | #else |
81 | #define CIFS_NUM_PROT 1 | |
82 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
83 | #endif /* CIFS_POSIX */ | |
84 | ||
1da177e4 LT |
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 */ | |
4477288a | 94 | spin_lock(&cifs_file_list_lock); |
1da177e4 | 95 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
790fe579 | 96 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 97 | open_file->invalidHandle = true; |
3bc303c2 | 98 | open_file->oplock_break_cancelled = true; |
1da177e4 | 99 | } |
4477288a | 100 | spin_unlock(&cifs_file_list_lock); |
09d1db5c SF |
101 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
102 | to this tcon */ | |
1da177e4 LT |
103 | } |
104 | ||
9162ab20 JL |
105 | /* reconnect the socket, tcon, and smb session if needed */ |
106 | static int | |
107 | cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command) | |
108 | { | |
109 | int rc = 0; | |
110 | struct cifsSesInfo *ses; | |
111 | struct TCP_Server_Info *server; | |
112 | struct nls_table *nls_codepage; | |
113 | ||
114 | /* | |
115 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
116 | * tcp and smb session status done differently for those three - in the | |
117 | * calling routine | |
118 | */ | |
119 | if (!tcon) | |
120 | return 0; | |
121 | ||
122 | ses = tcon->ses; | |
123 | server = ses->server; | |
124 | ||
125 | /* | |
126 | * only tree disconnect, open, and write, (and ulogoff which does not | |
127 | * have tcon) are allowed as we start force umount | |
128 | */ | |
129 | if (tcon->tidStatus == CifsExiting) { | |
130 | if (smb_command != SMB_COM_WRITE_ANDX && | |
131 | smb_command != SMB_COM_OPEN_ANDX && | |
132 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
133 | cFYI(1, "can not send cmd %d while umounting", |
134 | smb_command); | |
9162ab20 JL |
135 | return -ENODEV; |
136 | } | |
137 | } | |
138 | ||
139 | if (ses->status == CifsExiting) | |
140 | return -EIO; | |
141 | ||
142 | /* | |
143 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
144 | * greater than cifs socket timeout which is 7 seconds | |
145 | */ | |
146 | while (server->tcpStatus == CifsNeedReconnect) { | |
147 | wait_event_interruptible_timeout(server->response_q, | |
148 | (server->tcpStatus == CifsGood), 10 * HZ); | |
149 | ||
150 | /* is TCP session is reestablished now ?*/ | |
151 | if (server->tcpStatus != CifsNeedReconnect) | |
152 | break; | |
153 | ||
154 | /* | |
155 | * on "soft" mounts we wait once. Hard mounts keep | |
156 | * retrying until process is killed or server comes | |
157 | * back on-line | |
158 | */ | |
159 | if (!tcon->retry || ses->status == CifsExiting) { | |
b6b38f70 | 160 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
161 | return -EHOSTDOWN; |
162 | } | |
163 | } | |
164 | ||
165 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
166 | return 0; | |
167 | ||
168 | nls_codepage = load_nls_default(); | |
169 | ||
170 | /* | |
171 | * need to prevent multiple threads trying to simultaneously | |
172 | * reconnect the same SMB session | |
173 | */ | |
d7b619cf | 174 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
175 | rc = cifs_negotiate_protocol(0, ses); |
176 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
177 | rc = cifs_setup_session(0, ses, nls_codepage); |
178 | ||
179 | /* do we need to reconnect tcon? */ | |
180 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 181 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
182 | goto out; |
183 | } | |
184 | ||
185 | mark_open_files_invalid(tcon); | |
186 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 188 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
189 | |
190 | if (rc) | |
191 | goto out; | |
192 | ||
193 | /* | |
194 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
195 | * size shrinking | |
196 | */ | |
197 | atomic_inc(&tconInfoReconnectCount); | |
198 | ||
199 | /* tell server Unix caps we support */ | |
200 | if (ses->capabilities & CAP_UNIX) | |
201 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
202 | ||
203 | /* | |
204 | * Removed call to reopen open files here. It is safer (and faster) to | |
205 | * reopen files one at a time as needed in read and write. | |
206 | * | |
207 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
208 | */ | |
209 | ||
210 | out: | |
211 | /* | |
212 | * Check if handle based operation so we know whether we can continue | |
213 | * or not without returning to caller to reset file handle | |
214 | */ | |
215 | switch (smb_command) { | |
216 | case SMB_COM_READ_ANDX: | |
217 | case SMB_COM_WRITE_ANDX: | |
218 | case SMB_COM_CLOSE: | |
219 | case SMB_COM_FIND_CLOSE2: | |
220 | case SMB_COM_LOCKING_ANDX: | |
221 | rc = -EAGAIN; | |
222 | } | |
223 | ||
224 | unload_nls(nls_codepage); | |
225 | return rc; | |
226 | } | |
227 | ||
ad7a2926 SF |
228 | /* Allocate and return pointer to an SMB request buffer, and set basic |
229 | SMB information in the SMB header. If the return code is zero, this | |
230 | function must have filled in request_buf pointer */ | |
1da177e4 LT |
231 | static int |
232 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
ad7a2926 | 233 | void **request_buf) |
1da177e4 | 234 | { |
f569599a | 235 | int rc; |
1da177e4 | 236 | |
9162ab20 | 237 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 238 | if (rc) |
1da177e4 LT |
239 | return rc; |
240 | ||
241 | *request_buf = cifs_small_buf_get(); | |
242 | if (*request_buf == NULL) { | |
243 | /* BB should we add a retry in here if not a writepage? */ | |
244 | return -ENOMEM; | |
245 | } | |
246 | ||
63135e08 | 247 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 248 | tcon, wct); |
1da177e4 | 249 | |
790fe579 SF |
250 | if (tcon != NULL) |
251 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 252 | |
f569599a | 253 | return 0; |
5815449d SF |
254 | } |
255 | ||
12b3b8ff | 256 | int |
50c2f753 | 257 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 258 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
259 | { |
260 | int rc; | |
50c2f753 | 261 | struct smb_hdr *buffer; |
12b3b8ff | 262 | |
5815449d | 263 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 264 | if (rc) |
12b3b8ff SF |
265 | return rc; |
266 | ||
04fdabe1 | 267 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
268 | buffer->Mid = GetNextMid(ses->server); |
269 | if (ses->capabilities & CAP_UNICODE) | |
270 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 271 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
272 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
273 | ||
274 | /* uid, tid can stay at zero as set in header assemble */ | |
275 | ||
50c2f753 | 276 | /* BB add support for turning on the signing when |
12b3b8ff SF |
277 | this function is used after 1st of session setup requests */ |
278 | ||
279 | return rc; | |
280 | } | |
1da177e4 LT |
281 | |
282 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
283 | static int | |
f569599a JL |
284 | __smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, |
285 | void **request_buf, void **response_buf) | |
1da177e4 | 286 | { |
1da177e4 LT |
287 | *request_buf = cifs_buf_get(); |
288 | if (*request_buf == NULL) { | |
289 | /* BB should we add a retry in here if not a writepage? */ | |
290 | return -ENOMEM; | |
291 | } | |
292 | /* Although the original thought was we needed the response buf for */ | |
293 | /* potential retries of smb operations it turns out we can determine */ | |
294 | /* from the mid flags when the request buffer can be resent without */ | |
295 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 296 | if (response_buf) |
50c2f753 | 297 | *response_buf = *request_buf; |
1da177e4 LT |
298 | |
299 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 300 | wct); |
1da177e4 | 301 | |
790fe579 SF |
302 | if (tcon != NULL) |
303 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 304 | |
f569599a JL |
305 | return 0; |
306 | } | |
307 | ||
308 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
309 | static int | |
310 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
311 | void **request_buf, void **response_buf) | |
312 | { | |
313 | int rc; | |
314 | ||
315 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
316 | if (rc) | |
317 | return rc; | |
318 | ||
319 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
320 | } | |
321 | ||
322 | static int | |
323 | smb_init_no_reconnect(int smb_command, int wct, struct cifsTconInfo *tcon, | |
324 | void **request_buf, void **response_buf) | |
325 | { | |
326 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
327 | return -EHOSTDOWN; | |
328 | ||
329 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
330 | } |
331 | ||
50c2f753 | 332 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 333 | { |
12df83c9 JL |
334 | unsigned int total_size; |
335 | ||
336 | /* check for plausible wct */ | |
337 | if (pSMB->hdr.WordCount < 10) | |
338 | goto vt2_err; | |
1da177e4 | 339 | |
1da177e4 | 340 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
341 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
342 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
343 | goto vt2_err; | |
344 | ||
345 | /* check that bcc is at least as big as parms + data */ | |
346 | /* check that bcc is less than negotiated smb buffer */ | |
347 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); | |
348 | if (total_size >= 512) | |
349 | goto vt2_err; | |
350 | ||
351 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); | |
352 | if (total_size > get_bcc(&pSMB->hdr) || | |
353 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
354 | goto vt2_err; | |
355 | ||
356 | return 0; | |
357 | vt2_err: | |
50c2f753 | 358 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 359 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 360 | return -EINVAL; |
1da177e4 | 361 | } |
690c522f | 362 | |
1da177e4 LT |
363 | int |
364 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
365 | { | |
366 | NEGOTIATE_REQ *pSMB; | |
367 | NEGOTIATE_RSP *pSMBr; | |
368 | int rc = 0; | |
369 | int bytes_returned; | |
3979877e | 370 | int i; |
50c2f753 | 371 | struct TCP_Server_Info *server; |
1da177e4 | 372 | u16 count; |
750d1151 | 373 | unsigned int secFlags; |
1da177e4 | 374 | |
790fe579 | 375 | if (ses->server) |
1da177e4 LT |
376 | server = ses->server; |
377 | else { | |
378 | rc = -EIO; | |
379 | return rc; | |
380 | } | |
381 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
382 | (void **) &pSMB, (void **) &pSMBr); | |
383 | if (rc) | |
384 | return rc; | |
750d1151 SF |
385 | |
386 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 387 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 388 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 389 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 390 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 391 | |
b6b38f70 | 392 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 393 | |
1982c344 | 394 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 395 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 396 | |
100c1ddc | 397 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 398 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 399 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 400 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 401 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 402 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
403 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
404 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 405 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
406 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
407 | } | |
50c2f753 | 408 | |
3979877e | 409 | count = 0; |
50c2f753 | 410 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
411 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
412 | count += strlen(protocols[i].name) + 1; | |
413 | /* null at end of source and target buffers anyway */ | |
414 | } | |
1da177e4 LT |
415 | pSMB->hdr.smb_buf_length += count; |
416 | pSMB->ByteCount = cpu_to_le16(count); | |
417 | ||
418 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
419 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 420 | if (rc != 0) |
254e55ed SF |
421 | goto neg_err_exit; |
422 | ||
9bf67e51 JL |
423 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
424 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 425 | /* Check wct = 1 error case */ |
9bf67e51 | 426 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 427 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 428 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
429 | could not negotiate a common dialect */ |
430 | rc = -EOPNOTSUPP; | |
431 | goto neg_err_exit; | |
50c2f753 | 432 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 433 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
434 | && ((server->dialect == LANMAN_PROT) |
435 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 436 | __s16 tmp; |
50c2f753 | 437 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 438 | |
790fe579 | 439 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 440 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
441 | server->secType = LANMAN; |
442 | else { | |
b6b38f70 JP |
443 | cERROR(1, "mount failed weak security disabled" |
444 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
445 | rc = -EOPNOTSUPP; |
446 | goto neg_err_exit; | |
50c2f753 | 447 | } |
254e55ed SF |
448 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
449 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
450 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 451 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 452 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
453 | /* even though we do not use raw we might as well set this |
454 | accurately, in case we ever find a need for it */ | |
790fe579 | 455 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 456 | server->max_rw = 0xFF00; |
254e55ed SF |
457 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
458 | } else { | |
eca6acf9 | 459 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
460 | server->capabilities = CAP_MPX_MODE; |
461 | } | |
b815f1e5 | 462 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 463 | if (tmp == -1) { |
25ee4a98 SF |
464 | /* OS/2 often does not set timezone therefore |
465 | * we must use server time to calc time zone. | |
b815f1e5 SF |
466 | * Could deviate slightly from the right zone. |
467 | * Smallest defined timezone difference is 15 minutes | |
468 | * (i.e. Nepal). Rounding up/down is done to match | |
469 | * this requirement. | |
25ee4a98 | 470 | */ |
b815f1e5 | 471 | int val, seconds, remain, result; |
25ee4a98 SF |
472 | struct timespec ts, utc; |
473 | utc = CURRENT_TIME; | |
c4a2c08d JL |
474 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
475 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 476 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 477 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 478 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 479 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 480 | seconds = abs(val); |
947a5067 | 481 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 482 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 483 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 484 | result += MIN_TZ_ADJ; |
790fe579 | 485 | if (val < 0) |
ad7a2926 | 486 | result = -result; |
b815f1e5 | 487 | server->timeAdj = result; |
25ee4a98 | 488 | } else { |
b815f1e5 SF |
489 | server->timeAdj = (int)tmp; |
490 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 491 | } |
b6b38f70 | 492 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 493 | |
3979877e | 494 | |
254e55ed | 495 | /* BB get server time for time conversions and add |
50c2f753 | 496 | code to use it and timezone since this is not UTC */ |
3979877e | 497 | |
50c2f753 | 498 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 499 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 500 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed SF |
501 | CIFS_CRYPTO_KEY_SIZE); |
502 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
503 | rc = -EIO; /* need cryptkey unless plain text */ | |
504 | goto neg_err_exit; | |
505 | } | |
3979877e | 506 | |
f19159dc | 507 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
508 | /* we will not end up setting signing flags - as no signing |
509 | was in LANMAN and server did not return the flags on */ | |
510 | goto signing_check; | |
7c7b25bc | 511 | #else /* weak security disabled */ |
790fe579 | 512 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
513 | cERROR(1, "mount failed, cifs module not built " |
514 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 515 | rc = -EOPNOTSUPP; |
7c7b25bc | 516 | #endif /* WEAK_PW_HASH */ |
254e55ed | 517 | goto neg_err_exit; |
790fe579 | 518 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
519 | /* unknown wct */ |
520 | rc = -EOPNOTSUPP; | |
521 | goto neg_err_exit; | |
522 | } | |
523 | /* else wct == 17 NTLM */ | |
524 | server->secMode = pSMBr->SecurityMode; | |
790fe579 | 525 | if ((server->secMode & SECMODE_USER) == 0) |
b6b38f70 | 526 | cFYI(1, "share mode security"); |
bdc4bf6e | 527 | |
790fe579 | 528 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 529 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 530 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 531 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
532 | cERROR(1, "Server requests plain text password" |
533 | " but client support disabled"); | |
9312f675 | 534 | |
790fe579 | 535 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 536 | server->secType = NTLMv2; |
790fe579 | 537 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 538 | server->secType = NTLM; |
790fe579 | 539 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 540 | server->secType = NTLMv2; |
a013689d SF |
541 | else if (secFlags & CIFSSEC_MAY_KRB5) |
542 | server->secType = Kerberos; | |
ac683924 | 543 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 544 | server->secType = RawNTLMSSP; |
a013689d SF |
545 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
546 | server->secType = LANMAN; | |
547 | /* #ifdef CONFIG_CIFS_EXPERIMENTAL | |
548 | else if (secFlags & CIFSSEC_MAY_PLNTXT) | |
549 | server->secType = ?? | |
550 | #endif */ | |
551 | else { | |
552 | rc = -EOPNOTSUPP; | |
b6b38f70 | 553 | cERROR(1, "Invalid security type"); |
a013689d SF |
554 | goto neg_err_exit; |
555 | } | |
556 | /* else ... any others ...? */ | |
254e55ed SF |
557 | |
558 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
559 | little endian */ | |
560 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
561 | /* probably no need to store and check maxvcs */ | |
562 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 563 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 564 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 565 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 566 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
567 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
568 | server->timeAdj *= 60; | |
254e55ed | 569 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 570 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed SF |
571 | CIFS_CRYPTO_KEY_SIZE); |
572 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
573 | && (pSMBr->EncryptionKeyLength == 0)) { | |
574 | /* decode security blob */ | |
575 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
576 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
577 | goto neg_err_exit; | |
578 | } | |
1da177e4 | 579 | |
254e55ed SF |
580 | /* BB might be helpful to save off the domain of server here */ |
581 | ||
50c2f753 | 582 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed SF |
583 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
584 | count = pSMBr->ByteCount; | |
e187e44e | 585 | if (count < 16) { |
254e55ed | 586 | rc = -EIO; |
e187e44e JL |
587 | goto neg_err_exit; |
588 | } | |
3f9bcca7 | 589 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 590 | if (server->srv_count > 1) { |
3f9bcca7 | 591 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
592 | if (memcmp(server->server_GUID, |
593 | pSMBr->u.extended_response. | |
594 | GUID, 16) != 0) { | |
b6b38f70 | 595 | cFYI(1, "server UID changed"); |
254e55ed | 596 | memcpy(server->server_GUID, |
e187e44e JL |
597 | pSMBr->u.extended_response.GUID, |
598 | 16); | |
599 | } | |
e7ddee90 | 600 | } else { |
3f9bcca7 | 601 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
602 | memcpy(server->server_GUID, |
603 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 604 | } |
e187e44e JL |
605 | |
606 | if (count == 16) { | |
607 | server->secType = RawNTLMSSP; | |
254e55ed SF |
608 | } else { |
609 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
610 | SecurityBlob, count - 16, |
611 | server); | |
ef571cad | 612 | if (rc == 1) |
e545937a | 613 | rc = 0; |
ef571cad | 614 | else |
254e55ed | 615 | rc = -EINVAL; |
2b149f11 SP |
616 | if (server->secType == Kerberos) { |
617 | if (!server->sec_kerberos && | |
618 | !server->sec_mskerberos) | |
619 | rc = -EOPNOTSUPP; | |
620 | } else if (server->secType == RawNTLMSSP) { | |
621 | if (!server->sec_ntlmssp) | |
622 | rc = -EOPNOTSUPP; | |
623 | } else | |
624 | rc = -EOPNOTSUPP; | |
1da177e4 | 625 | } |
254e55ed SF |
626 | } else |
627 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
628 | ||
6344a423 | 629 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 630 | signing_check: |
6344a423 | 631 | #endif |
762e5ab7 SF |
632 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
633 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
634 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 635 | cFYI(1, "Signing disabled"); |
abb63d6c | 636 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 637 | cERROR(1, "Server requires " |
7111d214 | 638 | "packet signing to be enabled in " |
b6b38f70 | 639 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
640 | rc = -EOPNOTSUPP; |
641 | } | |
50c2f753 | 642 | server->secMode &= |
254e55ed | 643 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
644 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
645 | /* signing required */ | |
b6b38f70 | 646 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
762e5ab7 SF |
647 | if ((server->secMode & |
648 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
b6b38f70 | 649 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 650 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
651 | } else |
652 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
653 | } else { | |
654 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 655 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 656 | server->secMode &= |
254e55ed | 657 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 658 | } |
50c2f753 SF |
659 | |
660 | neg_err_exit: | |
4a6d87f1 | 661 | cifs_buf_release(pSMB); |
254e55ed | 662 | |
b6b38f70 | 663 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
664 | return rc; |
665 | } | |
666 | ||
667 | int | |
668 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
669 | { | |
670 | struct smb_hdr *smb_buffer; | |
1da177e4 | 671 | int rc = 0; |
1da177e4 | 672 | |
b6b38f70 | 673 | cFYI(1, "In tree disconnect"); |
1da177e4 | 674 | |
f1987b44 JL |
675 | /* BB: do we need to check this? These should never be NULL. */ |
676 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
677 | return -EIO; | |
1da177e4 | 678 | |
f1987b44 JL |
679 | /* |
680 | * No need to return error on this operation if tid invalidated and | |
681 | * closed on server already e.g. due to tcp session crashing. Also, | |
682 | * the tcon is no longer on the list, so no need to take lock before | |
683 | * checking this. | |
684 | */ | |
268875b9 | 685 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 686 | return 0; |
1da177e4 | 687 | |
50c2f753 | 688 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 689 | (void **)&smb_buffer); |
f1987b44 | 690 | if (rc) |
1da177e4 | 691 | return rc; |
133672ef SF |
692 | |
693 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 694 | if (rc) |
b6b38f70 | 695 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 696 | |
50c2f753 | 697 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 698 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
699 | if (rc == -EAGAIN) |
700 | rc = 0; | |
701 | ||
702 | return rc; | |
703 | } | |
704 | ||
766fdbb5 JL |
705 | /* |
706 | * This is a no-op for now. We're not really interested in the reply, but | |
707 | * rather in the fact that the server sent one and that server->lstrp | |
708 | * gets updated. | |
709 | * | |
710 | * FIXME: maybe we should consider checking that the reply matches request? | |
711 | */ | |
712 | static void | |
713 | cifs_echo_callback(struct mid_q_entry *mid) | |
714 | { | |
715 | struct TCP_Server_Info *server = mid->callback_data; | |
716 | ||
717 | DeleteMidQEntry(mid); | |
718 | atomic_dec(&server->inFlight); | |
719 | wake_up(&server->request_q); | |
720 | } | |
721 | ||
722 | int | |
723 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
724 | { | |
725 | ECHO_REQ *smb; | |
726 | int rc = 0; | |
727 | ||
728 | cFYI(1, "In echo request"); | |
729 | ||
730 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
731 | if (rc) | |
732 | return rc; | |
733 | ||
734 | /* set up echo request */ | |
735 | smb->hdr.Tid = cpu_to_le16(0xffff); | |
736 | smb->hdr.WordCount = cpu_to_le16(1); | |
737 | smb->EchoCount = cpu_to_le16(1); | |
738 | smb->ByteCount = cpu_to_le16(1); | |
739 | smb->Data[0] = 'a'; | |
740 | smb->hdr.smb_buf_length += 3; | |
741 | ||
742 | rc = cifs_call_async(server, (struct smb_hdr *)smb, | |
743 | cifs_echo_callback, server); | |
744 | if (rc) | |
745 | cFYI(1, "Echo request failed: %d", rc); | |
746 | ||
747 | cifs_small_buf_release(smb); | |
748 | ||
749 | return rc; | |
750 | } | |
751 | ||
1da177e4 LT |
752 | int |
753 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
754 | { | |
1da177e4 LT |
755 | LOGOFF_ANDX_REQ *pSMB; |
756 | int rc = 0; | |
1da177e4 | 757 | |
b6b38f70 | 758 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 759 | |
14fbf50d JL |
760 | /* |
761 | * BB: do we need to check validity of ses and server? They should | |
762 | * always be valid since we have an active reference. If not, that | |
763 | * should probably be a BUG() | |
764 | */ | |
765 | if (!ses || !ses->server) | |
3b795210 SF |
766 | return -EIO; |
767 | ||
d7b619cf | 768 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
769 | if (ses->need_reconnect) |
770 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
771 | already closed due to reconnect */ | |
1da177e4 LT |
772 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
773 | if (rc) { | |
d7b619cf | 774 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
775 | return rc; |
776 | } | |
777 | ||
3b795210 | 778 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 779 | |
3b795210 | 780 | if (ses->server->secMode & |
1da177e4 LT |
781 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
782 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
783 | |
784 | pSMB->hdr.Uid = ses->Suid; | |
785 | ||
786 | pSMB->AndXCommand = 0xFF; | |
133672ef | 787 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 788 | session_already_dead: |
d7b619cf | 789 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
790 | |
791 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 792 | since server closed smb session, no sense reporting |
1da177e4 LT |
793 | error */ |
794 | if (rc == -EAGAIN) | |
795 | rc = 0; | |
796 | return rc; | |
797 | } | |
798 | ||
2d785a50 SF |
799 | int |
800 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
801 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
802 | { | |
803 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
804 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
805 | struct unlink_psx_rq *pRqD; | |
806 | int name_len; | |
807 | int rc = 0; | |
808 | int bytes_returned = 0; | |
809 | __u16 params, param_offset, offset, byte_count; | |
810 | ||
b6b38f70 | 811 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
812 | PsxDelete: |
813 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
814 | (void **) &pSMBr); | |
815 | if (rc) | |
816 | return rc; | |
817 | ||
818 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
819 | name_len = | |
820 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
821 | PATH_MAX, nls_codepage, remap); | |
822 | name_len++; /* trailing null */ | |
823 | name_len *= 2; | |
824 | } else { /* BB add path length overrun check */ | |
825 | name_len = strnlen(fileName, PATH_MAX); | |
826 | name_len++; /* trailing null */ | |
827 | strncpy(pSMB->FileName, fileName, name_len); | |
828 | } | |
829 | ||
830 | params = 6 + name_len; | |
831 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
832 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
833 | pSMB->MaxSetupCount = 0; | |
834 | pSMB->Reserved = 0; | |
835 | pSMB->Flags = 0; | |
836 | pSMB->Timeout = 0; | |
837 | pSMB->Reserved2 = 0; | |
838 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
839 | InformationLevel) - 4; | |
840 | offset = param_offset + params; | |
841 | ||
842 | /* Setup pointer to Request Data (inode type) */ | |
843 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
844 | pRqD->type = cpu_to_le16(type); | |
845 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
846 | pSMB->DataOffset = cpu_to_le16(offset); | |
847 | pSMB->SetupCount = 1; | |
848 | pSMB->Reserved3 = 0; | |
849 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
850 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
851 | ||
852 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
853 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
854 | pSMB->ParameterCount = cpu_to_le16(params); | |
855 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
856 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
857 | pSMB->Reserved4 = 0; | |
858 | pSMB->hdr.smb_buf_length += byte_count; | |
859 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
860 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
861 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 862 | if (rc) |
b6b38f70 | 863 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
864 | cifs_buf_release(pSMB); |
865 | ||
866 | cifs_stats_inc(&tcon->num_deletes); | |
867 | ||
868 | if (rc == -EAGAIN) | |
869 | goto PsxDelete; | |
870 | ||
871 | return rc; | |
872 | } | |
873 | ||
1da177e4 | 874 | int |
737b758c SF |
875 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
876 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
877 | { |
878 | DELETE_FILE_REQ *pSMB = NULL; | |
879 | DELETE_FILE_RSP *pSMBr = NULL; | |
880 | int rc = 0; | |
881 | int bytes_returned; | |
882 | int name_len; | |
883 | ||
884 | DelFileRetry: | |
885 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
886 | (void **) &pSMBr); | |
887 | if (rc) | |
888 | return rc; | |
889 | ||
890 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
891 | name_len = | |
50c2f753 | 892 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 893 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
894 | name_len++; /* trailing null */ |
895 | name_len *= 2; | |
09d1db5c | 896 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
897 | name_len = strnlen(fileName, PATH_MAX); |
898 | name_len++; /* trailing null */ | |
899 | strncpy(pSMB->fileName, fileName, name_len); | |
900 | } | |
901 | pSMB->SearchAttributes = | |
902 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
903 | pSMB->BufferFormat = 0x04; | |
904 | pSMB->hdr.smb_buf_length += name_len + 1; | |
905 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
906 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
907 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 908 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 909 | if (rc) |
b6b38f70 | 910 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
911 | |
912 | cifs_buf_release(pSMB); | |
913 | if (rc == -EAGAIN) | |
914 | goto DelFileRetry; | |
915 | ||
916 | return rc; | |
917 | } | |
918 | ||
919 | int | |
50c2f753 | 920 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 921 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
922 | { |
923 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
924 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
925 | int rc = 0; | |
926 | int bytes_returned; | |
927 | int name_len; | |
928 | ||
b6b38f70 | 929 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
930 | RmDirRetry: |
931 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
932 | (void **) &pSMBr); | |
933 | if (rc) | |
934 | return rc; | |
935 | ||
936 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
937 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
938 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
939 | name_len++; /* trailing null */ |
940 | name_len *= 2; | |
09d1db5c | 941 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
942 | name_len = strnlen(dirName, PATH_MAX); |
943 | name_len++; /* trailing null */ | |
944 | strncpy(pSMB->DirName, dirName, name_len); | |
945 | } | |
946 | ||
947 | pSMB->BufferFormat = 0x04; | |
948 | pSMB->hdr.smb_buf_length += name_len + 1; | |
949 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
950 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
951 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 952 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 953 | if (rc) |
b6b38f70 | 954 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
955 | |
956 | cifs_buf_release(pSMB); | |
957 | if (rc == -EAGAIN) | |
958 | goto RmDirRetry; | |
959 | return rc; | |
960 | } | |
961 | ||
962 | int | |
963 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 964 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
965 | { |
966 | int rc = 0; | |
967 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
968 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
969 | int bytes_returned; | |
970 | int name_len; | |
971 | ||
b6b38f70 | 972 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
973 | MkDirRetry: |
974 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
975 | (void **) &pSMBr); | |
976 | if (rc) | |
977 | return rc; | |
978 | ||
979 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 980 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 981 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
982 | name_len++; /* trailing null */ |
983 | name_len *= 2; | |
09d1db5c | 984 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
985 | name_len = strnlen(name, PATH_MAX); |
986 | name_len++; /* trailing null */ | |
987 | strncpy(pSMB->DirName, name, name_len); | |
988 | } | |
989 | ||
990 | pSMB->BufferFormat = 0x04; | |
991 | pSMB->hdr.smb_buf_length += name_len + 1; | |
992 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
993 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
994 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 995 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 996 | if (rc) |
b6b38f70 | 997 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 998 | |
1da177e4 LT |
999 | cifs_buf_release(pSMB); |
1000 | if (rc == -EAGAIN) | |
1001 | goto MkDirRetry; | |
1002 | return rc; | |
1003 | } | |
1004 | ||
2dd29d31 SF |
1005 | int |
1006 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 1007 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1008 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1009 | const struct nls_table *nls_codepage, int remap) |
1010 | { | |
1011 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1012 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1013 | int name_len; | |
1014 | int rc = 0; | |
1015 | int bytes_returned = 0; | |
2dd29d31 | 1016 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1017 | OPEN_PSX_REQ *pdata; |
1018 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1019 | |
b6b38f70 | 1020 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1021 | PsxCreat: |
1022 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1023 | (void **) &pSMBr); | |
1024 | if (rc) | |
1025 | return rc; | |
1026 | ||
1027 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1028 | name_len = | |
1029 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1030 | PATH_MAX, nls_codepage, remap); | |
1031 | name_len++; /* trailing null */ | |
1032 | name_len *= 2; | |
1033 | } else { /* BB improve the check for buffer overruns BB */ | |
1034 | name_len = strnlen(name, PATH_MAX); | |
1035 | name_len++; /* trailing null */ | |
1036 | strncpy(pSMB->FileName, name, name_len); | |
1037 | } | |
1038 | ||
1039 | params = 6 + name_len; | |
1040 | count = sizeof(OPEN_PSX_REQ); | |
1041 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1042 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1043 | pSMB->MaxSetupCount = 0; | |
1044 | pSMB->Reserved = 0; | |
1045 | pSMB->Flags = 0; | |
1046 | pSMB->Timeout = 0; | |
1047 | pSMB->Reserved2 = 0; | |
1048 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1049 | InformationLevel) - 4; |
2dd29d31 | 1050 | offset = param_offset + params; |
2dd29d31 | 1051 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1052 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1053 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1054 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1055 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1056 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1057 | pSMB->DataOffset = cpu_to_le16(offset); | |
1058 | pSMB->SetupCount = 1; | |
1059 | pSMB->Reserved3 = 0; | |
1060 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1061 | byte_count = 3 /* pad */ + params + count; | |
1062 | ||
1063 | pSMB->DataCount = cpu_to_le16(count); | |
1064 | pSMB->ParameterCount = cpu_to_le16(params); | |
1065 | pSMB->TotalDataCount = pSMB->DataCount; | |
1066 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1067 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1068 | pSMB->Reserved4 = 0; | |
50c2f753 | 1069 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1070 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1071 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1072 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1073 | if (rc) { | |
b6b38f70 | 1074 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1075 | goto psx_create_err; |
1076 | } | |
1077 | ||
b6b38f70 | 1078 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1079 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1080 | ||
1081 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1082 | rc = -EIO; /* bad smb */ | |
1083 | goto psx_create_err; | |
1084 | } | |
1085 | ||
1086 | /* copy return information to pRetData */ | |
50c2f753 | 1087 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1088 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1089 | |
2dd29d31 | 1090 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1091 | if (netfid) |
2dd29d31 SF |
1092 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1093 | /* Let caller know file was created so we can set the mode. */ | |
1094 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1095 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1096 | *pOplock |= CIFS_CREATE_ACTION; |
1097 | /* check to make sure response data is there */ | |
8f2376ad CG |
1098 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1099 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1100 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1101 | } else { |
790fe579 | 1102 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1103 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1104 | cERROR(1, "Open response data too small"); |
8f2376ad | 1105 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1106 | goto psx_create_err; |
1107 | } | |
50c2f753 | 1108 | memcpy((char *) pRetData, |
cbac3cba | 1109 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1110 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1111 | } |
2dd29d31 SF |
1112 | |
1113 | psx_create_err: | |
1114 | cifs_buf_release(pSMB); | |
1115 | ||
65bc98b0 SF |
1116 | if (posix_flags & SMB_O_DIRECTORY) |
1117 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1118 | else | |
1119 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1120 | |
1121 | if (rc == -EAGAIN) | |
1122 | goto PsxCreat; | |
1123 | ||
50c2f753 | 1124 | return rc; |
2dd29d31 SF |
1125 | } |
1126 | ||
a9d02ad4 SF |
1127 | static __u16 convert_disposition(int disposition) |
1128 | { | |
1129 | __u16 ofun = 0; | |
1130 | ||
1131 | switch (disposition) { | |
1132 | case FILE_SUPERSEDE: | |
1133 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1134 | break; | |
1135 | case FILE_OPEN: | |
1136 | ofun = SMBOPEN_OAPPEND; | |
1137 | break; | |
1138 | case FILE_CREATE: | |
1139 | ofun = SMBOPEN_OCREATE; | |
1140 | break; | |
1141 | case FILE_OPEN_IF: | |
1142 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1143 | break; | |
1144 | case FILE_OVERWRITE: | |
1145 | ofun = SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | case FILE_OVERWRITE_IF: | |
1148 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1149 | break; | |
1150 | default: | |
b6b38f70 | 1151 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1152 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1153 | } | |
1154 | return ofun; | |
1155 | } | |
1156 | ||
35fc37d5 JL |
1157 | static int |
1158 | access_flags_to_smbopen_mode(const int access_flags) | |
1159 | { | |
1160 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1161 | ||
1162 | if (masked_flags == GENERIC_READ) | |
1163 | return SMBOPEN_READ; | |
1164 | else if (masked_flags == GENERIC_WRITE) | |
1165 | return SMBOPEN_WRITE; | |
1166 | ||
1167 | /* just go for read/write */ | |
1168 | return SMBOPEN_READWRITE; | |
1169 | } | |
1170 | ||
a9d02ad4 SF |
1171 | int |
1172 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1173 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1174 | const int access_flags, const int create_options, __u16 *netfid, |
1175 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1176 | const struct nls_table *nls_codepage, int remap) |
1177 | { | |
1178 | int rc = -EACCES; | |
1179 | OPENX_REQ *pSMB = NULL; | |
1180 | OPENX_RSP *pSMBr = NULL; | |
1181 | int bytes_returned; | |
1182 | int name_len; | |
1183 | __u16 count; | |
1184 | ||
1185 | OldOpenRetry: | |
1186 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1187 | (void **) &pSMBr); | |
1188 | if (rc) | |
1189 | return rc; | |
1190 | ||
1191 | pSMB->AndXCommand = 0xFF; /* none */ | |
1192 | ||
1193 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1194 | count = 1; /* account for one byte pad to word boundary */ | |
1195 | name_len = | |
1196 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1197 | fileName, PATH_MAX, nls_codepage, remap); | |
1198 | name_len++; /* trailing null */ | |
1199 | name_len *= 2; | |
1200 | } else { /* BB improve check for buffer overruns BB */ | |
1201 | count = 0; /* no pad */ | |
1202 | name_len = strnlen(fileName, PATH_MAX); | |
1203 | name_len++; /* trailing null */ | |
1204 | strncpy(pSMB->fileName, fileName, name_len); | |
1205 | } | |
1206 | if (*pOplock & REQ_OPLOCK) | |
1207 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1208 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1209 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1210 | |
a9d02ad4 | 1211 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1212 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1213 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1214 | /* set file as system file if special file such | |
1215 | as fifo and server expecting SFU style and | |
1216 | no Unix extensions */ | |
1217 | ||
790fe579 SF |
1218 | if (create_options & CREATE_OPTION_SPECIAL) |
1219 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1220 | else /* BB FIXME BB */ |
1221 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1222 | |
67750fb9 JL |
1223 | if (create_options & CREATE_OPTION_READONLY) |
1224 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1225 | |
1226 | /* BB FIXME BB */ | |
50c2f753 SF |
1227 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1228 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1229 | /* BB FIXME END BB */ |
3e87d803 SF |
1230 | |
1231 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1232 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1233 | count += name_len; |
1234 | pSMB->hdr.smb_buf_length += count; | |
1235 | ||
1236 | pSMB->ByteCount = cpu_to_le16(count); | |
1237 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1238 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1239 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1240 | cifs_stats_inc(&tcon->num_opens); |
1241 | if (rc) { | |
b6b38f70 | 1242 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1243 | } else { |
1244 | /* BB verify if wct == 15 */ | |
1245 | ||
582d21e5 | 1246 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1247 | |
1248 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1249 | /* Let caller know file was created so we can set the mode. */ | |
1250 | /* Do we care about the CreateAction in any other cases? */ | |
1251 | /* BB FIXME BB */ | |
790fe579 | 1252 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1253 | *pOplock |= CIFS_CREATE_ACTION; */ |
1254 | /* BB FIXME END */ | |
1255 | ||
790fe579 | 1256 | if (pfile_info) { |
a9d02ad4 SF |
1257 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1258 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1259 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1260 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1261 | pfile_info->Attributes = |
50c2f753 | 1262 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1263 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1264 | pfile_info->AllocationSize = |
1265 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1266 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1267 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1268 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1269 | } |
1270 | } | |
1271 | ||
1272 | cifs_buf_release(pSMB); | |
1273 | if (rc == -EAGAIN) | |
1274 | goto OldOpenRetry; | |
1275 | return rc; | |
1276 | } | |
1277 | ||
1da177e4 LT |
1278 | int |
1279 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1280 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1281 | const int access_flags, const int create_options, __u16 *netfid, |
1282 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1283 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1284 | { |
1285 | int rc = -EACCES; | |
1286 | OPEN_REQ *pSMB = NULL; | |
1287 | OPEN_RSP *pSMBr = NULL; | |
1288 | int bytes_returned; | |
1289 | int name_len; | |
1290 | __u16 count; | |
1291 | ||
1292 | openRetry: | |
1293 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1294 | (void **) &pSMBr); | |
1295 | if (rc) | |
1296 | return rc; | |
1297 | ||
1298 | pSMB->AndXCommand = 0xFF; /* none */ | |
1299 | ||
1300 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1301 | count = 1; /* account for one byte pad to word boundary */ | |
1302 | name_len = | |
b1a45695 | 1303 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1304 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1305 | name_len++; /* trailing null */ |
1306 | name_len *= 2; | |
1307 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1308 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1309 | count = 0; /* no pad */ |
1310 | name_len = strnlen(fileName, PATH_MAX); | |
1311 | name_len++; /* trailing null */ | |
1312 | pSMB->NameLength = cpu_to_le16(name_len); | |
1313 | strncpy(pSMB->fileName, fileName, name_len); | |
1314 | } | |
1315 | if (*pOplock & REQ_OPLOCK) | |
1316 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1317 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1318 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1319 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1320 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1321 | /* set file as system file if special file such |
1322 | as fifo and server expecting SFU style and | |
1323 | no Unix extensions */ | |
790fe579 | 1324 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1325 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1326 | else | |
1327 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1328 | |
1da177e4 LT |
1329 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1330 | /* but it helps speed up case sensitive checks for other | |
1331 | servers such as Samba */ | |
1332 | if (tcon->ses->capabilities & CAP_UNIX) | |
1333 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1334 | ||
67750fb9 JL |
1335 | if (create_options & CREATE_OPTION_READONLY) |
1336 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1337 | ||
1da177e4 LT |
1338 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1339 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1340 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1341 | /* BB Expirement with various impersonation levels and verify */ |
1342 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1343 | pSMB->SecurityFlags = |
1344 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1345 | ||
1346 | count += name_len; | |
1347 | pSMB->hdr.smb_buf_length += count; | |
1348 | ||
1349 | pSMB->ByteCount = cpu_to_le16(count); | |
1350 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1351 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1352 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1353 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1354 | if (rc) { |
b6b38f70 | 1355 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1356 | } else { |
09d1db5c | 1357 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1358 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1359 | /* Let caller know file was created so we can set the mode. */ | |
1360 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1361 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1362 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1363 | if (pfile_info) { |
61e74801 SF |
1364 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1365 | 36 /* CreationTime to Attributes */); | |
1366 | /* the file_info buf is endian converted by caller */ | |
1367 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1368 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1369 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1370 | pfile_info->DeletePending = 0; | |
1da177e4 | 1371 | } |
1da177e4 | 1372 | } |
a5a2b489 | 1373 | |
1da177e4 LT |
1374 | cifs_buf_release(pSMB); |
1375 | if (rc == -EAGAIN) | |
1376 | goto openRetry; | |
1377 | return rc; | |
1378 | } | |
1379 | ||
1da177e4 | 1380 | int |
50c2f753 SF |
1381 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1382 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1383 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1384 | { |
1385 | int rc = -EACCES; | |
1386 | READ_REQ *pSMB = NULL; | |
1387 | READ_RSP *pSMBr = NULL; | |
1388 | char *pReadData = NULL; | |
bfa0d75a | 1389 | int wct; |
ec637e3f SF |
1390 | int resp_buf_type = 0; |
1391 | struct kvec iov[1]; | |
1da177e4 | 1392 | |
b6b38f70 | 1393 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1394 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1395 | wct = 12; |
4c3130ef | 1396 | else { |
bfa0d75a | 1397 | wct = 10; /* old style read */ |
4c3130ef SF |
1398 | if ((lseek >> 32) > 0) { |
1399 | /* can not handle this big offset for old */ | |
1400 | return -EIO; | |
1401 | } | |
1402 | } | |
1da177e4 LT |
1403 | |
1404 | *nbytes = 0; | |
ec637e3f | 1405 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1406 | if (rc) |
1407 | return rc; | |
1408 | ||
1409 | /* tcon and ses pointer are checked in smb_init */ | |
1410 | if (tcon->ses->server == NULL) | |
1411 | return -ECONNABORTED; | |
1412 | ||
ec637e3f | 1413 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1414 | pSMB->Fid = netfid; |
1415 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1416 | if (wct == 12) |
bfa0d75a | 1417 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1418 | |
1da177e4 LT |
1419 | pSMB->Remaining = 0; |
1420 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1421 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1422 | if (wct == 12) |
bfa0d75a SF |
1423 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1424 | else { | |
1425 | /* old style read */ | |
50c2f753 | 1426 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1427 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1428 | pSMBW->ByteCount = 0; |
bfa0d75a | 1429 | } |
ec637e3f SF |
1430 | |
1431 | iov[0].iov_base = (char *)pSMB; | |
1432 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
a761ac57 | 1433 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1434 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1435 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1436 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1437 | if (rc) { |
b6b38f70 | 1438 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1439 | } else { |
1440 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1441 | data_length = data_length << 16; | |
1442 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1443 | *nbytes = data_length; | |
1444 | ||
1445 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1446 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1447 | || (data_length > count)) { |
b6b38f70 JP |
1448 | cFYI(1, "bad length %d for count %d", |
1449 | data_length, count); | |
1da177e4 LT |
1450 | rc = -EIO; |
1451 | *nbytes = 0; | |
1452 | } else { | |
ec637e3f | 1453 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1454 | le16_to_cpu(pSMBr->DataOffset); |
1455 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1456 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1457 | rc = -EFAULT; |
26f57364 | 1458 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1459 | if (*buf) |
50c2f753 | 1460 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1461 | } |
1462 | } | |
1da177e4 | 1463 | |
4b8f930f | 1464 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1465 | if (*buf) { |
1466 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1467 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1468 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1469 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1470 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1471 | /* return buffer to caller to free */ |
1472 | *buf = iov[0].iov_base; | |
790fe579 | 1473 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1474 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1475 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1476 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1477 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1478 | |
1479 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1480 | since file handle passed in no longer valid */ |
1481 | return rc; | |
1482 | } | |
1483 | ||
ec637e3f | 1484 | |
1da177e4 LT |
1485 | int |
1486 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1487 | const int netfid, const unsigned int count, | |
1488 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1489 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1490 | { |
1491 | int rc = -EACCES; | |
1492 | WRITE_REQ *pSMB = NULL; | |
1493 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1494 | int bytes_returned, wct; |
1da177e4 LT |
1495 | __u32 bytes_sent; |
1496 | __u16 byte_count; | |
1497 | ||
a24e2d7d SF |
1498 | *nbytes = 0; |
1499 | ||
b6b38f70 | 1500 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1501 | if (tcon->ses == NULL) |
1c955187 SF |
1502 | return -ECONNABORTED; |
1503 | ||
790fe579 | 1504 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1505 | wct = 14; |
4c3130ef | 1506 | else { |
1c955187 | 1507 | wct = 12; |
4c3130ef SF |
1508 | if ((offset >> 32) > 0) { |
1509 | /* can not handle big offset for old srv */ | |
1510 | return -EIO; | |
1511 | } | |
1512 | } | |
1c955187 SF |
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); |
50c2f753 | 1527 | |
1da177e4 LT |
1528 | pSMB->Reserved = 0xFFFFFFFF; |
1529 | pSMB->WriteMode = 0; | |
1530 | pSMB->Remaining = 0; | |
1531 | ||
50c2f753 | 1532 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1533 | can send more if LARGE_WRITE_X capability returned by the server and if |
1534 | our buffer is big enough or if we convert to iovecs on socket writes | |
1535 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1536 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1537 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1538 | } else { | |
1539 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1540 | & ~0xFF; | |
1541 | } | |
1542 | ||
1543 | if (bytes_sent > count) | |
1544 | bytes_sent = count; | |
1545 | pSMB->DataOffset = | |
50c2f753 | 1546 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1547 | if (buf) |
61e74801 | 1548 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1549 | else if (ubuf) { |
1550 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1551 | cifs_buf_release(pSMB); |
1552 | return -EFAULT; | |
1553 | } | |
e30dcf3a | 1554 | } else if (count != 0) { |
1da177e4 LT |
1555 | /* No buffer */ |
1556 | cifs_buf_release(pSMB); | |
1557 | return -EINVAL; | |
e30dcf3a | 1558 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1559 | if (wct == 14) |
e30dcf3a | 1560 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1561 | else /* wct == 12 */ |
e30dcf3a | 1562 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1563 | |
1da177e4 LT |
1564 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1565 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1566 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1567 | |
790fe579 | 1568 | if (wct == 14) |
1c955187 | 1569 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1570 | else { /* old style write has byte count 4 bytes earlier |
1571 | so 4 bytes pad */ | |
1572 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1573 | (struct smb_com_writex_req *)pSMB; |
1574 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1575 | } | |
1da177e4 LT |
1576 | |
1577 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1578 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1579 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1580 | if (rc) { |
f19159dc | 1581 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1582 | } else { |
1583 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1584 | *nbytes = (*nbytes) << 16; | |
1585 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1586 | |
1587 | /* | |
1588 | * Mask off high 16 bits when bytes written as returned by the | |
1589 | * server is greater than bytes requested by the client. Some | |
1590 | * OS/2 servers are known to set incorrect CountHigh values. | |
1591 | */ | |
1592 | if (*nbytes > count) | |
1593 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | cifs_buf_release(pSMB); | |
1597 | ||
50c2f753 | 1598 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1599 | since file handle passed in no longer valid */ |
1600 | ||
1601 | return rc; | |
1602 | } | |
1603 | ||
d6e04ae6 SF |
1604 | int |
1605 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1606 | const int netfid, const unsigned int count, |
3e84469d SF |
1607 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1608 | int n_vec, const int long_op) | |
1da177e4 LT |
1609 | { |
1610 | int rc = -EACCES; | |
1611 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1612 | int wct; |
d6e04ae6 | 1613 | int smb_hdr_len; |
ec637e3f | 1614 | int resp_buf_type = 0; |
1da177e4 | 1615 | |
fbec9ab9 JL |
1616 | *nbytes = 0; |
1617 | ||
b6b38f70 | 1618 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 1619 | |
4c3130ef | 1620 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1621 | wct = 14; |
4c3130ef | 1622 | } else { |
8cc64c6e | 1623 | wct = 12; |
4c3130ef SF |
1624 | if ((offset >> 32) > 0) { |
1625 | /* can not handle big offset for old srv */ | |
1626 | return -EIO; | |
1627 | } | |
1628 | } | |
8cc64c6e | 1629 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1630 | if (rc) |
1631 | return rc; | |
1da177e4 LT |
1632 | /* tcon and ses pointer are checked in smb_init */ |
1633 | if (tcon->ses->server == NULL) | |
1634 | return -ECONNABORTED; | |
1635 | ||
d6e04ae6 | 1636 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1637 | pSMB->Fid = netfid; |
1638 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1639 | if (wct == 14) |
8cc64c6e | 1640 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1641 | pSMB->Reserved = 0xFFFFFFFF; |
1642 | pSMB->WriteMode = 0; | |
1643 | pSMB->Remaining = 0; | |
d6e04ae6 | 1644 | |
1da177e4 | 1645 | pSMB->DataOffset = |
50c2f753 | 1646 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1647 | |
3e84469d SF |
1648 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1649 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1650 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1651 | if (wct == 14) |
8cc64c6e SF |
1652 | pSMB->hdr.smb_buf_length += count+1; |
1653 | else /* wct == 12 */ | |
790fe579 SF |
1654 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1655 | if (wct == 14) | |
8cc64c6e SF |
1656 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1657 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1658 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1659 | (struct smb_com_writex_req *)pSMB; |
1660 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1661 | } | |
3e84469d | 1662 | iov[0].iov_base = pSMB; |
790fe579 | 1663 | if (wct == 14) |
ec637e3f SF |
1664 | iov[0].iov_len = smb_hdr_len + 4; |
1665 | else /* wct == 12 pad bigger by four bytes */ | |
1666 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1667 | |
1da177e4 | 1668 | |
ec637e3f | 1669 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1670 | long_op); |
a4544347 | 1671 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1672 | if (rc) { |
b6b38f70 | 1673 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 1674 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1675 | /* presumably this can not happen, but best to be safe */ |
1676 | rc = -EIO; | |
d6e04ae6 | 1677 | } else { |
ad7a2926 | 1678 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1679 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1680 | *nbytes = (*nbytes) << 16; | |
1681 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1682 | |
1683 | /* | |
1684 | * Mask off high 16 bits when bytes written as returned by the | |
1685 | * server is greater than bytes requested by the client. OS/2 | |
1686 | * servers are known to set incorrect CountHigh values. | |
1687 | */ | |
1688 | if (*nbytes > count) | |
1689 | *nbytes &= 0xFFFF; | |
50c2f753 | 1690 | } |
1da177e4 | 1691 | |
4b8f930f | 1692 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1693 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1694 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1695 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1696 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1697 | |
50c2f753 | 1698 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1699 | since file handle passed in no longer valid */ |
1700 | ||
1701 | return rc; | |
1702 | } | |
d6e04ae6 SF |
1703 | |
1704 | ||
1da177e4 LT |
1705 | int |
1706 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1707 | const __u16 smb_file_id, const __u64 len, | |
1708 | const __u64 offset, const __u32 numUnlock, | |
12fed00d PS |
1709 | const __u32 numLock, const __u8 lockType, |
1710 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1711 | { |
1712 | int rc = 0; | |
1713 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1714 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1715 | int bytes_returned; |
1716 | int timeout = 0; | |
1717 | __u16 count; | |
1718 | ||
b6b38f70 | 1719 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
1720 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1721 | ||
1da177e4 LT |
1722 | if (rc) |
1723 | return rc; | |
1724 | ||
790fe579 | 1725 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1726 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1727 | pSMB->Timeout = 0; |
4b18f2a9 | 1728 | } else if (waitFlag) { |
133672ef | 1729 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1730 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1731 | } else { | |
1732 | pSMB->Timeout = 0; | |
1733 | } | |
1734 | ||
1735 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1736 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1737 | pSMB->LockType = lockType; | |
12fed00d | 1738 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1739 | pSMB->AndXCommand = 0xFF; /* none */ |
1740 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1741 | ||
790fe579 | 1742 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1743 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1744 | /* BB where to store pid high? */ | |
1745 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1746 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1747 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1748 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1749 | count = sizeof(LOCKING_ANDX_RANGE); | |
1750 | } else { | |
1751 | /* oplock break */ | |
1752 | count = 0; | |
1753 | } | |
1754 | pSMB->hdr.smb_buf_length += count; | |
1755 | pSMB->ByteCount = cpu_to_le16(count); | |
1756 | ||
7ee1af76 JA |
1757 | if (waitFlag) { |
1758 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1759 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1760 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1761 | } else { |
133672ef SF |
1762 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1763 | timeout); | |
1764 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1765 | } |
a4544347 | 1766 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1767 | if (rc) |
b6b38f70 | 1768 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 1769 | |
50c2f753 | 1770 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1771 | since file handle passed in no longer valid */ |
1772 | return rc; | |
1773 | } | |
1774 | ||
08547b03 SF |
1775 | int |
1776 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1777 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1778 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1779 | const bool waitFlag) |
08547b03 SF |
1780 | { |
1781 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1782 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1783 | struct cifs_posix_lock *parm_data; |
1784 | int rc = 0; | |
3a5ff61c | 1785 | int timeout = 0; |
08547b03 | 1786 | int bytes_returned = 0; |
133672ef | 1787 | int resp_buf_type = 0; |
08547b03 | 1788 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1789 | struct kvec iov[1]; |
08547b03 | 1790 | |
b6b38f70 | 1791 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 1792 | |
790fe579 | 1793 | if (pLockData == NULL) |
ed5f0370 | 1794 | return -EINVAL; |
fc94cdb9 | 1795 | |
08547b03 SF |
1796 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1797 | ||
1798 | if (rc) | |
1799 | return rc; | |
1800 | ||
1801 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1802 | ||
50c2f753 | 1803 | params = 6; |
08547b03 SF |
1804 | pSMB->MaxSetupCount = 0; |
1805 | pSMB->Reserved = 0; | |
1806 | pSMB->Flags = 0; | |
08547b03 SF |
1807 | pSMB->Reserved2 = 0; |
1808 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1809 | offset = param_offset + params; | |
1810 | ||
08547b03 SF |
1811 | count = sizeof(struct cifs_posix_lock); |
1812 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1813 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1814 | pSMB->SetupCount = 1; |
1815 | pSMB->Reserved3 = 0; | |
790fe579 | 1816 | if (get_flag) |
08547b03 SF |
1817 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1818 | else | |
1819 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1820 | byte_count = 3 /* pad */ + params + count; | |
1821 | pSMB->DataCount = cpu_to_le16(count); | |
1822 | pSMB->ParameterCount = cpu_to_le16(params); | |
1823 | pSMB->TotalDataCount = pSMB->DataCount; | |
1824 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1825 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1826 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1827 | (((char *) &pSMB->hdr.Protocol) + offset); |
1828 | ||
1829 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1830 | if (waitFlag) { |
133672ef | 1831 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1832 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1833 | pSMB->Timeout = cpu_to_le32(-1); |
1834 | } else | |
1835 | pSMB->Timeout = 0; | |
1836 | ||
08547b03 | 1837 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1838 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1839 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1840 | |
1841 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1842 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1843 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1844 | pSMB->Reserved4 = 0; | |
1845 | pSMB->hdr.smb_buf_length += byte_count; | |
1846 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1847 | if (waitFlag) { |
1848 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1849 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1850 | } else { | |
133672ef SF |
1851 | iov[0].iov_base = (char *)pSMB; |
1852 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1853 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1854 | &resp_buf_type, timeout); | |
1855 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1856 | not try to free it twice below on exit */ | |
1857 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1858 | } |
1859 | ||
08547b03 | 1860 | if (rc) { |
b6b38f70 | 1861 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
1862 | } else if (get_flag) { |
1863 | /* lock structure can be returned on get */ | |
1864 | __u16 data_offset; | |
1865 | __u16 data_count; | |
1866 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1867 | ||
1868 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1869 | rc = -EIO; /* bad smb */ | |
1870 | goto plk_err_exit; | |
1871 | } | |
fc94cdb9 SF |
1872 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1873 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1874 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1875 | rc = -EIO; |
1876 | goto plk_err_exit; | |
1877 | } | |
1878 | parm_data = (struct cifs_posix_lock *) | |
1879 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 1880 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1881 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
1882 | else { |
1883 | if (parm_data->lock_type == | |
1884 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
1885 | pLockData->fl_type = F_RDLCK; | |
1886 | else if (parm_data->lock_type == | |
1887 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
1888 | pLockData->fl_type = F_WRLCK; | |
1889 | ||
1890 | pLockData->fl_start = parm_data->start; | |
1891 | pLockData->fl_end = parm_data->start + | |
1892 | parm_data->length - 1; | |
1893 | pLockData->fl_pid = parm_data->pid; | |
1894 | } | |
08547b03 | 1895 | } |
50c2f753 | 1896 | |
fc94cdb9 | 1897 | plk_err_exit: |
08547b03 SF |
1898 | if (pSMB) |
1899 | cifs_small_buf_release(pSMB); | |
1900 | ||
133672ef SF |
1901 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1902 | cifs_small_buf_release(iov[0].iov_base); | |
1903 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1904 | cifs_buf_release(iov[0].iov_base); | |
1905 | ||
08547b03 SF |
1906 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1907 | since file handle passed in no longer valid */ | |
1908 | ||
1909 | return rc; | |
1910 | } | |
1911 | ||
1912 | ||
1da177e4 LT |
1913 | int |
1914 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1915 | { | |
1916 | int rc = 0; | |
1917 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 1918 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
1919 | |
1920 | /* do not retry on dead session on close */ | |
1921 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1922 | if (rc == -EAGAIN) |
1da177e4 LT |
1923 | return 0; |
1924 | if (rc) | |
1925 | return rc; | |
1926 | ||
1da177e4 | 1927 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1928 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1929 | pSMB->ByteCount = 0; |
133672ef | 1930 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1931 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1932 | if (rc) { |
790fe579 | 1933 | if (rc != -EINTR) { |
1da177e4 | 1934 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 1935 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
1936 | } |
1937 | } | |
1938 | ||
1da177e4 | 1939 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1940 | if (rc == -EAGAIN) |
1da177e4 LT |
1941 | rc = 0; |
1942 | ||
1943 | return rc; | |
1944 | } | |
1945 | ||
b298f223 SF |
1946 | int |
1947 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1948 | { | |
1949 | int rc = 0; | |
1950 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 1951 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
1952 | |
1953 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
1954 | if (rc) | |
1955 | return rc; | |
1956 | ||
1957 | pSMB->FileID = (__u16) smb_file_id; | |
1958 | pSMB->ByteCount = 0; | |
1959 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1960 | cifs_stats_inc(&tcon->num_flushes); | |
1961 | if (rc) | |
b6b38f70 | 1962 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
1963 | |
1964 | return rc; | |
1965 | } | |
1966 | ||
1da177e4 LT |
1967 | int |
1968 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1969 | const char *fromName, const char *toName, | |
737b758c | 1970 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1971 | { |
1972 | int rc = 0; | |
1973 | RENAME_REQ *pSMB = NULL; | |
1974 | RENAME_RSP *pSMBr = NULL; | |
1975 | int bytes_returned; | |
1976 | int name_len, name_len2; | |
1977 | __u16 count; | |
1978 | ||
b6b38f70 | 1979 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
1980 | renameRetry: |
1981 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1982 | (void **) &pSMBr); | |
1983 | if (rc) | |
1984 | return rc; | |
1985 | ||
1986 | pSMB->BufferFormat = 0x04; | |
1987 | pSMB->SearchAttributes = | |
1988 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1989 | ATTR_DIRECTORY); | |
1990 | ||
1991 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1992 | name_len = | |
50c2f753 | 1993 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1994 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1995 | name_len++; /* trailing null */ |
1996 | name_len *= 2; | |
1997 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1998 | /* protocol requires ASCII signature byte on Unicode string */ | |
1999 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2000 | name_len2 = | |
582d21e5 | 2001 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2002 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2003 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2004 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2005 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2006 | name_len = strnlen(fromName, PATH_MAX); |
2007 | name_len++; /* trailing null */ | |
2008 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2009 | name_len2 = strnlen(toName, PATH_MAX); | |
2010 | name_len2++; /* trailing null */ | |
2011 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2012 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2013 | name_len2++; /* trailing null */ | |
2014 | name_len2++; /* signature byte */ | |
2015 | } | |
2016 | ||
2017 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2018 | pSMB->hdr.smb_buf_length += count; | |
2019 | pSMB->ByteCount = cpu_to_le16(count); | |
2020 | ||
2021 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2022 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2023 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2024 | if (rc) |
b6b38f70 | 2025 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2026 | |
1da177e4 LT |
2027 | cifs_buf_release(pSMB); |
2028 | ||
2029 | if (rc == -EAGAIN) | |
2030 | goto renameRetry; | |
2031 | ||
2032 | return rc; | |
2033 | } | |
2034 | ||
50c2f753 | 2035 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 2036 | int netfid, const char *target_name, |
50c2f753 | 2037 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2038 | { |
2039 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2040 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2041 | struct set_file_rename *rename_info; |
1da177e4 LT |
2042 | char *data_offset; |
2043 | char dummy_string[30]; | |
2044 | int rc = 0; | |
2045 | int bytes_returned = 0; | |
2046 | int len_of_str; | |
2047 | __u16 params, param_offset, offset, count, byte_count; | |
2048 | ||
b6b38f70 | 2049 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2050 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2051 | (void **) &pSMBr); | |
2052 | if (rc) | |
2053 | return rc; | |
2054 | ||
2055 | params = 6; | |
2056 | pSMB->MaxSetupCount = 0; | |
2057 | pSMB->Reserved = 0; | |
2058 | pSMB->Flags = 0; | |
2059 | pSMB->Timeout = 0; | |
2060 | pSMB->Reserved2 = 0; | |
2061 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2062 | offset = param_offset + params; | |
2063 | ||
2064 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2065 | rename_info = (struct set_file_rename *) data_offset; | |
2066 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2067 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2068 | pSMB->SetupCount = 1; |
2069 | pSMB->Reserved3 = 0; | |
2070 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2071 | byte_count = 3 /* pad */ + params; | |
2072 | pSMB->ParameterCount = cpu_to_le16(params); | |
2073 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2074 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2075 | pSMB->DataOffset = cpu_to_le16(offset); | |
2076 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2077 | rename_info->overwrite = cpu_to_le32(1); | |
2078 | rename_info->root_fid = 0; | |
2079 | /* unicode only call */ | |
790fe579 | 2080 | if (target_name == NULL) { |
50c2f753 SF |
2081 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2082 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2083 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2084 | } else { |
b1a45695 | 2085 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2086 | target_name, PATH_MAX, nls_codepage, |
2087 | remap); | |
1da177e4 LT |
2088 | } |
2089 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2090 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2091 | byte_count += count; |
2092 | pSMB->DataCount = cpu_to_le16(count); | |
2093 | pSMB->TotalDataCount = pSMB->DataCount; | |
2094 | pSMB->Fid = netfid; | |
2095 | pSMB->InformationLevel = | |
2096 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2097 | pSMB->Reserved4 = 0; | |
2098 | pSMB->hdr.smb_buf_length += byte_count; | |
2099 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2100 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2101 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2102 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2103 | if (rc) |
b6b38f70 | 2104 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2105 | |
1da177e4 LT |
2106 | cifs_buf_release(pSMB); |
2107 | ||
2108 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2109 | since file handle passed in no longer valid */ | |
2110 | ||
2111 | return rc; | |
2112 | } | |
2113 | ||
2114 | int | |
50c2f753 SF |
2115 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2116 | const __u16 target_tid, const char *toName, const int flags, | |
2117 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2118 | { |
2119 | int rc = 0; | |
2120 | COPY_REQ *pSMB = NULL; | |
2121 | COPY_RSP *pSMBr = NULL; | |
2122 | int bytes_returned; | |
2123 | int name_len, name_len2; | |
2124 | __u16 count; | |
2125 | ||
b6b38f70 | 2126 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2127 | copyRetry: |
2128 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2129 | (void **) &pSMBr); | |
2130 | if (rc) | |
2131 | return rc; | |
2132 | ||
2133 | pSMB->BufferFormat = 0x04; | |
2134 | pSMB->Tid2 = target_tid; | |
2135 | ||
2136 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2137 | ||
2138 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2139 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2140 | fromName, PATH_MAX, nls_codepage, |
2141 | remap); | |
1da177e4 LT |
2142 | name_len++; /* trailing null */ |
2143 | name_len *= 2; | |
2144 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2145 | /* protocol requires ASCII signature byte on Unicode string */ | |
2146 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2147 | name_len2 = |
2148 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2149 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2150 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2151 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2152 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2153 | name_len = strnlen(fromName, PATH_MAX); |
2154 | name_len++; /* trailing null */ | |
2155 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2156 | name_len2 = strnlen(toName, PATH_MAX); | |
2157 | name_len2++; /* trailing null */ | |
2158 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2159 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2160 | name_len2++; /* trailing null */ | |
2161 | name_len2++; /* signature byte */ | |
2162 | } | |
2163 | ||
2164 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2165 | pSMB->hdr.smb_buf_length += count; | |
2166 | pSMB->ByteCount = cpu_to_le16(count); | |
2167 | ||
2168 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2169 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2170 | if (rc) { | |
b6b38f70 JP |
2171 | cFYI(1, "Send error in copy = %d with %d files copied", |
2172 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2173 | } |
0d817bc0 | 2174 | cifs_buf_release(pSMB); |
1da177e4 LT |
2175 | |
2176 | if (rc == -EAGAIN) | |
2177 | goto copyRetry; | |
2178 | ||
2179 | return rc; | |
2180 | } | |
2181 | ||
2182 | int | |
2183 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2184 | const char *fromName, const char *toName, | |
2185 | const struct nls_table *nls_codepage) | |
2186 | { | |
2187 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2188 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2189 | char *data_offset; | |
2190 | int name_len; | |
2191 | int name_len_target; | |
2192 | int rc = 0; | |
2193 | int bytes_returned = 0; | |
2194 | __u16 params, param_offset, offset, byte_count; | |
2195 | ||
b6b38f70 | 2196 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2197 | createSymLinkRetry: |
2198 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2199 | (void **) &pSMBr); | |
2200 | if (rc) | |
2201 | return rc; | |
2202 | ||
2203 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2204 | name_len = | |
e89dc920 | 2205 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2206 | /* find define for this maxpathcomponent */ |
2207 | , nls_codepage); | |
2208 | name_len++; /* trailing null */ | |
2209 | name_len *= 2; | |
2210 | ||
50c2f753 | 2211 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2212 | name_len = strnlen(fromName, PATH_MAX); |
2213 | name_len++; /* trailing null */ | |
2214 | strncpy(pSMB->FileName, fromName, name_len); | |
2215 | } | |
2216 | params = 6 + name_len; | |
2217 | pSMB->MaxSetupCount = 0; | |
2218 | pSMB->Reserved = 0; | |
2219 | pSMB->Flags = 0; | |
2220 | pSMB->Timeout = 0; | |
2221 | pSMB->Reserved2 = 0; | |
2222 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2223 | InformationLevel) - 4; |
1da177e4 LT |
2224 | offset = param_offset + params; |
2225 | ||
2226 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2227 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2228 | name_len_target = | |
e89dc920 | 2229 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2230 | /* find define for this maxpathcomponent */ |
2231 | , nls_codepage); | |
2232 | name_len_target++; /* trailing null */ | |
2233 | name_len_target *= 2; | |
50c2f753 | 2234 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2235 | name_len_target = strnlen(toName, PATH_MAX); |
2236 | name_len_target++; /* trailing null */ | |
2237 | strncpy(data_offset, toName, name_len_target); | |
2238 | } | |
2239 | ||
2240 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2241 | /* BB find exact max on data count below from sess */ | |
2242 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2243 | pSMB->SetupCount = 1; | |
2244 | pSMB->Reserved3 = 0; | |
2245 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2246 | byte_count = 3 /* pad */ + params + name_len_target; | |
2247 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2248 | pSMB->ParameterCount = cpu_to_le16(params); | |
2249 | pSMB->TotalDataCount = pSMB->DataCount; | |
2250 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2251 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2252 | pSMB->DataOffset = cpu_to_le16(offset); | |
2253 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2254 | pSMB->Reserved4 = 0; | |
2255 | pSMB->hdr.smb_buf_length += byte_count; | |
2256 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2257 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2258 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2259 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2260 | if (rc) |
b6b38f70 | 2261 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2262 | |
0d817bc0 | 2263 | cifs_buf_release(pSMB); |
1da177e4 LT |
2264 | |
2265 | if (rc == -EAGAIN) | |
2266 | goto createSymLinkRetry; | |
2267 | ||
2268 | return rc; | |
2269 | } | |
2270 | ||
2271 | int | |
2272 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2273 | const char *fromName, const char *toName, | |
737b758c | 2274 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2275 | { |
2276 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2277 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2278 | char *data_offset; | |
2279 | int name_len; | |
2280 | int name_len_target; | |
2281 | int rc = 0; | |
2282 | int bytes_returned = 0; | |
2283 | __u16 params, param_offset, offset, byte_count; | |
2284 | ||
b6b38f70 | 2285 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2286 | createHardLinkRetry: |
2287 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2288 | (void **) &pSMBr); | |
2289 | if (rc) | |
2290 | return rc; | |
2291 | ||
2292 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2293 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2294 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2295 | name_len++; /* trailing null */ |
2296 | name_len *= 2; | |
2297 | ||
50c2f753 | 2298 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2299 | name_len = strnlen(toName, PATH_MAX); |
2300 | name_len++; /* trailing null */ | |
2301 | strncpy(pSMB->FileName, toName, name_len); | |
2302 | } | |
2303 | params = 6 + name_len; | |
2304 | pSMB->MaxSetupCount = 0; | |
2305 | pSMB->Reserved = 0; | |
2306 | pSMB->Flags = 0; | |
2307 | pSMB->Timeout = 0; | |
2308 | pSMB->Reserved2 = 0; | |
2309 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2310 | InformationLevel) - 4; |
1da177e4 LT |
2311 | offset = param_offset + params; |
2312 | ||
2313 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2314 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2315 | name_len_target = | |
b1a45695 | 2316 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2317 | nls_codepage, remap); |
1da177e4 LT |
2318 | name_len_target++; /* trailing null */ |
2319 | name_len_target *= 2; | |
50c2f753 | 2320 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2321 | name_len_target = strnlen(fromName, PATH_MAX); |
2322 | name_len_target++; /* trailing null */ | |
2323 | strncpy(data_offset, fromName, name_len_target); | |
2324 | } | |
2325 | ||
2326 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2327 | /* BB find exact max on data count below from sess*/ | |
2328 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2329 | pSMB->SetupCount = 1; | |
2330 | pSMB->Reserved3 = 0; | |
2331 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2332 | byte_count = 3 /* pad */ + params + name_len_target; | |
2333 | pSMB->ParameterCount = cpu_to_le16(params); | |
2334 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2335 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2336 | pSMB->TotalDataCount = pSMB->DataCount; | |
2337 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2338 | pSMB->DataOffset = cpu_to_le16(offset); | |
2339 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2340 | pSMB->Reserved4 = 0; | |
2341 | pSMB->hdr.smb_buf_length += byte_count; | |
2342 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2343 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2344 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2345 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2346 | if (rc) |
b6b38f70 | 2347 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2348 | |
2349 | cifs_buf_release(pSMB); | |
2350 | if (rc == -EAGAIN) | |
2351 | goto createHardLinkRetry; | |
2352 | ||
2353 | return rc; | |
2354 | } | |
2355 | ||
2356 | int | |
2357 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2358 | const char *fromName, const char *toName, | |
737b758c | 2359 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2360 | { |
2361 | int rc = 0; | |
2362 | NT_RENAME_REQ *pSMB = NULL; | |
2363 | RENAME_RSP *pSMBr = NULL; | |
2364 | int bytes_returned; | |
2365 | int name_len, name_len2; | |
2366 | __u16 count; | |
2367 | ||
b6b38f70 | 2368 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2369 | winCreateHardLinkRetry: |
2370 | ||
2371 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2372 | (void **) &pSMBr); | |
2373 | if (rc) | |
2374 | return rc; | |
2375 | ||
2376 | pSMB->SearchAttributes = | |
2377 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2378 | ATTR_DIRECTORY); | |
2379 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2380 | pSMB->ClusterCount = 0; | |
2381 | ||
2382 | pSMB->BufferFormat = 0x04; | |
2383 | ||
2384 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2385 | name_len = | |
b1a45695 | 2386 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2387 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2388 | name_len++; /* trailing null */ |
2389 | name_len *= 2; | |
fcc7c09d JL |
2390 | |
2391 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2392 | pSMB->OldFileName[name_len] = 0x04; | |
2393 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2394 | name_len2 = |
50c2f753 | 2395 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2396 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2397 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2398 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2399 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2400 | name_len = strnlen(fromName, PATH_MAX); |
2401 | name_len++; /* trailing null */ | |
2402 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2403 | name_len2 = strnlen(toName, PATH_MAX); | |
2404 | name_len2++; /* trailing null */ | |
2405 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2406 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2407 | name_len2++; /* trailing null */ | |
2408 | name_len2++; /* signature byte */ | |
2409 | } | |
2410 | ||
2411 | count = 1 /* string type byte */ + name_len + name_len2; | |
2412 | pSMB->hdr.smb_buf_length += count; | |
2413 | pSMB->ByteCount = cpu_to_le16(count); | |
2414 | ||
2415 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2416 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2417 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2418 | if (rc) |
b6b38f70 | 2419 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2420 | |
1da177e4 LT |
2421 | cifs_buf_release(pSMB); |
2422 | if (rc == -EAGAIN) | |
2423 | goto winCreateHardLinkRetry; | |
2424 | ||
2425 | return rc; | |
2426 | } | |
2427 | ||
2428 | int | |
2429 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2430 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2431 | const struct nls_table *nls_codepage) |
2432 | { | |
2433 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2434 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2435 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2436 | int rc = 0; | |
2437 | int bytes_returned; | |
2438 | int name_len; | |
2439 | __u16 params, byte_count; | |
460b9696 | 2440 | char *data_start; |
1da177e4 | 2441 | |
b6b38f70 | 2442 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2443 | |
2444 | querySymLinkRetry: | |
2445 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2446 | (void **) &pSMBr); | |
2447 | if (rc) | |
2448 | return rc; | |
2449 | ||
2450 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2451 | name_len = | |
50c2f753 SF |
2452 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2453 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2454 | name_len++; /* trailing null */ |
2455 | name_len *= 2; | |
50c2f753 | 2456 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2457 | name_len = strnlen(searchName, PATH_MAX); |
2458 | name_len++; /* trailing null */ | |
2459 | strncpy(pSMB->FileName, searchName, name_len); | |
2460 | } | |
2461 | ||
2462 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2463 | pSMB->TotalDataCount = 0; | |
2464 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2465 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2466 | pSMB->MaxSetupCount = 0; |
2467 | pSMB->Reserved = 0; | |
2468 | pSMB->Flags = 0; | |
2469 | pSMB->Timeout = 0; | |
2470 | pSMB->Reserved2 = 0; | |
2471 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2472 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2473 | pSMB->DataCount = 0; |
2474 | pSMB->DataOffset = 0; | |
2475 | pSMB->SetupCount = 1; | |
2476 | pSMB->Reserved3 = 0; | |
2477 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2478 | byte_count = params + 1 /* pad */ ; | |
2479 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2480 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2481 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2482 | pSMB->Reserved4 = 0; | |
2483 | pSMB->hdr.smb_buf_length += byte_count; | |
2484 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2485 | ||
2486 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2487 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2488 | if (rc) { | |
b6b38f70 | 2489 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
2490 | } else { |
2491 | /* decode response */ | |
2492 | ||
2493 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2494 | /* BB also check enough total bytes returned */ |
460b9696 JL |
2495 | if (rc || (pSMBr->ByteCount < 2)) |
2496 | rc = -EIO; | |
1da177e4 | 2497 | else { |
0e0d2cf3 | 2498 | bool is_unicode; |
460b9696 JL |
2499 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2500 | ||
2501 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2502 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2503 | |
0e0d2cf3 SF |
2504 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2505 | is_unicode = true; | |
2506 | else | |
2507 | is_unicode = false; | |
2508 | ||
737b758c | 2509 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2510 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2511 | is_unicode, nls_codepage); |
8b6427a2 | 2512 | if (!*symlinkinfo) |
460b9696 | 2513 | rc = -ENOMEM; |
1da177e4 LT |
2514 | } |
2515 | } | |
2516 | cifs_buf_release(pSMB); | |
2517 | if (rc == -EAGAIN) | |
2518 | goto querySymLinkRetry; | |
2519 | return rc; | |
2520 | } | |
2521 | ||
c9489779 | 2522 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1da177e4 LT |
2523 | int |
2524 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2525 | const unsigned char *searchName, | |
50c2f753 | 2526 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2527 | const struct nls_table *nls_codepage) |
2528 | { | |
2529 | int rc = 0; | |
2530 | int bytes_returned; | |
50c2f753 SF |
2531 | struct smb_com_transaction_ioctl_req *pSMB; |
2532 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 2533 | |
b6b38f70 | 2534 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
2535 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2536 | (void **) &pSMBr); | |
2537 | if (rc) | |
2538 | return rc; | |
2539 | ||
2540 | pSMB->TotalParameterCount = 0 ; | |
2541 | pSMB->TotalDataCount = 0; | |
2542 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2543 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2544 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2545 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2546 | pSMB->MaxSetupCount = 4; |
2547 | pSMB->Reserved = 0; | |
2548 | pSMB->ParameterOffset = 0; | |
2549 | pSMB->DataCount = 0; | |
2550 | pSMB->DataOffset = 0; | |
2551 | pSMB->SetupCount = 4; | |
2552 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2553 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2554 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2555 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2556 | pSMB->IsRootFlag = 0; | |
2557 | pSMB->Fid = fid; /* file handle always le */ | |
2558 | pSMB->ByteCount = 0; | |
2559 | ||
2560 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2561 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2562 | if (rc) { | |
b6b38f70 | 2563 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
2564 | } else { /* decode response */ |
2565 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2566 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
afe48c31 | 2567 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) { |
1da177e4 LT |
2568 | /* BB also check enough total bytes returned */ |
2569 | rc = -EIO; /* bad smb */ | |
afe48c31 SF |
2570 | goto qreparse_out; |
2571 | } | |
2572 | if (data_count && (data_count < 2048)) { | |
2573 | char *end_of_smb = 2 /* sizeof byte count */ + | |
2574 | pSMBr->ByteCount + (char *)&pSMBr->ByteCount; | |
1da177e4 | 2575 | |
afe48c31 | 2576 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2577 | (struct reparse_data *) |
2578 | ((char *)&pSMBr->hdr.Protocol | |
2579 | + data_offset); | |
afe48c31 SF |
2580 | if ((char *)reparse_buf >= end_of_smb) { |
2581 | rc = -EIO; | |
2582 | goto qreparse_out; | |
2583 | } | |
2584 | if ((reparse_buf->LinkNamesBuf + | |
2585 | reparse_buf->TargetNameOffset + | |
2586 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 2587 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
2588 | rc = -EIO; |
2589 | goto qreparse_out; | |
2590 | } | |
50c2f753 | 2591 | |
afe48c31 SF |
2592 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2593 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2594 | (reparse_buf->LinkNamesBuf + |
2595 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2596 | buflen, |
2597 | reparse_buf->TargetNameLen, | |
2598 | nls_codepage, 0); | |
2599 | } else { /* ASCII names */ | |
2600 | strncpy(symlinkinfo, | |
2601 | reparse_buf->LinkNamesBuf + | |
2602 | reparse_buf->TargetNameOffset, | |
2603 | min_t(const int, buflen, | |
2604 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2605 | } |
afe48c31 SF |
2606 | } else { |
2607 | rc = -EIO; | |
b6b38f70 JP |
2608 | cFYI(1, "Invalid return data count on " |
2609 | "get reparse info ioctl"); | |
1da177e4 | 2610 | } |
afe48c31 SF |
2611 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2612 | does not go off the end of the buffer */ | |
b6b38f70 | 2613 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 2614 | } |
989c7e51 | 2615 | |
1da177e4 | 2616 | qreparse_out: |
4a6d87f1 | 2617 | cifs_buf_release(pSMB); |
1da177e4 LT |
2618 | |
2619 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2620 | since file handle passed in no longer valid */ | |
2621 | ||
2622 | return rc; | |
2623 | } | |
afe48c31 | 2624 | #endif /* CIFS_EXPERIMENTAL */ |
1da177e4 LT |
2625 | |
2626 | #ifdef CONFIG_CIFS_POSIX | |
2627 | ||
2628 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2629 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2630 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2631 | { |
2632 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2633 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2634 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2635 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 2636 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
2637 | |
2638 | return; | |
2639 | } | |
2640 | ||
2641 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2642 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2643 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2644 | { |
2645 | int size = 0; | |
2646 | int i; | |
2647 | __u16 count; | |
50c2f753 SF |
2648 | struct cifs_posix_ace *pACE; |
2649 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2650 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2651 | |
2652 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2653 | return -EOPNOTSUPP; | |
2654 | ||
790fe579 | 2655 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2656 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2657 | pACE = &cifs_acl->ace_array[0]; | |
2658 | size = sizeof(struct cifs_posix_acl); | |
2659 | size += sizeof(struct cifs_posix_ace) * count; | |
2660 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2661 | if (size_of_data_area < size) { |
b6b38f70 JP |
2662 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
2663 | size_of_data_area, size); | |
1da177e4 LT |
2664 | return -EINVAL; |
2665 | } | |
790fe579 | 2666 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2667 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2668 | size = sizeof(struct cifs_posix_acl); | |
2669 | size += sizeof(struct cifs_posix_ace) * count; | |
2670 | /* skip past access ACEs to get to default ACEs */ | |
2671 | pACE = &cifs_acl->ace_array[count]; | |
2672 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2673 | size += sizeof(struct cifs_posix_ace) * count; | |
2674 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2675 | if (size_of_data_area < size) |
1da177e4 LT |
2676 | return -EINVAL; |
2677 | } else { | |
2678 | /* illegal type */ | |
2679 | return -EINVAL; | |
2680 | } | |
2681 | ||
2682 | size = posix_acl_xattr_size(count); | |
790fe579 | 2683 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2684 | /* used to query ACL EA size */ |
790fe579 | 2685 | } else if (size > buflen) { |
1da177e4 LT |
2686 | return -ERANGE; |
2687 | } else /* buffer big enough */ { | |
ff7feac9 | 2688 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2689 | for (i = 0; i < count ; i++) { |
2690 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2691 | pACE++; | |
1da177e4 LT |
2692 | } |
2693 | } | |
2694 | return size; | |
2695 | } | |
2696 | ||
50c2f753 SF |
2697 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2698 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2699 | { |
2700 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2701 | ||
ff7feac9 SF |
2702 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2703 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2704 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2705 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2706 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2707 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2708 | } else |
ff7feac9 | 2709 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 2710 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
2711 | return rc; |
2712 | } | |
2713 | ||
2714 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2715 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2716 | const int buflen, const int acl_type) | |
1da177e4 LT |
2717 | { |
2718 | __u16 rc = 0; | |
50c2f753 SF |
2719 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2720 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2721 | int count; |
2722 | int i; | |
2723 | ||
790fe579 | 2724 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2725 | return 0; |
2726 | ||
2727 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 2728 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 2729 | "version of %d", |
b6b38f70 | 2730 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 2731 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
2732 | cFYI(1, "unknown POSIX ACL version %d", |
2733 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
2734 | return 0; |
2735 | } | |
2736 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2737 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2738 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2739 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2740 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2741 | else { |
b6b38f70 | 2742 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
2743 | return 0; |
2744 | } | |
50c2f753 | 2745 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2746 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2747 | &local_acl->a_entries[i]); | |
790fe579 | 2748 | if (rc != 0) { |
1da177e4 LT |
2749 | /* ACE not converted */ |
2750 | break; | |
2751 | } | |
2752 | } | |
790fe579 | 2753 | if (rc == 0) { |
1da177e4 LT |
2754 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2755 | rc += sizeof(struct cifs_posix_acl); | |
2756 | /* BB add check to make sure ACL does not overflow SMB */ | |
2757 | } | |
2758 | return rc; | |
2759 | } | |
2760 | ||
2761 | int | |
2762 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2763 | const unsigned char *searchName, |
2764 | char *acl_inf, const int buflen, const int acl_type, | |
2765 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2766 | { |
2767 | /* SMB_QUERY_POSIX_ACL */ | |
2768 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2769 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2770 | int rc = 0; | |
2771 | int bytes_returned; | |
2772 | int name_len; | |
2773 | __u16 params, byte_count; | |
50c2f753 | 2774 | |
b6b38f70 | 2775 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
2776 | |
2777 | queryAclRetry: | |
2778 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2779 | (void **) &pSMBr); | |
2780 | if (rc) | |
2781 | return rc; | |
50c2f753 | 2782 | |
1da177e4 LT |
2783 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2784 | name_len = | |
50c2f753 | 2785 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2786 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2787 | name_len++; /* trailing null */ |
2788 | name_len *= 2; | |
2789 | pSMB->FileName[name_len] = 0; | |
2790 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2791 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2792 | name_len = strnlen(searchName, PATH_MAX); |
2793 | name_len++; /* trailing null */ | |
2794 | strncpy(pSMB->FileName, searchName, name_len); | |
2795 | } | |
2796 | ||
2797 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2798 | pSMB->TotalDataCount = 0; | |
2799 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2800 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2801 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2802 | pSMB->MaxSetupCount = 0; | |
2803 | pSMB->Reserved = 0; | |
2804 | pSMB->Flags = 0; | |
2805 | pSMB->Timeout = 0; | |
2806 | pSMB->Reserved2 = 0; | |
2807 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2808 | offsetof(struct smb_com_transaction2_qpi_req, |
2809 | InformationLevel) - 4); | |
1da177e4 LT |
2810 | pSMB->DataCount = 0; |
2811 | pSMB->DataOffset = 0; | |
2812 | pSMB->SetupCount = 1; | |
2813 | pSMB->Reserved3 = 0; | |
2814 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2815 | byte_count = params + 1 /* pad */ ; | |
2816 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2817 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2818 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2819 | pSMB->Reserved4 = 0; | |
2820 | pSMB->hdr.smb_buf_length += byte_count; | |
2821 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2822 | ||
2823 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2824 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2825 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 2826 | if (rc) { |
b6b38f70 | 2827 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
2828 | } else { |
2829 | /* decode response */ | |
50c2f753 | 2830 | |
1da177e4 LT |
2831 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2832 | if (rc || (pSMBr->ByteCount < 2)) | |
2833 | /* BB also check enough total bytes returned */ | |
2834 | rc = -EIO; /* bad smb */ | |
2835 | else { | |
2836 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2837 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2838 | rc = cifs_copy_posix_acl(acl_inf, | |
2839 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2840 | buflen, acl_type, count); |
1da177e4 LT |
2841 | } |
2842 | } | |
2843 | cifs_buf_release(pSMB); | |
2844 | if (rc == -EAGAIN) | |
2845 | goto queryAclRetry; | |
2846 | return rc; | |
2847 | } | |
2848 | ||
2849 | int | |
2850 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2851 | const unsigned char *fileName, |
2852 | const char *local_acl, const int buflen, | |
2853 | const int acl_type, | |
2854 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2855 | { |
2856 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2857 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2858 | char *parm_data; | |
2859 | int name_len; | |
2860 | int rc = 0; | |
2861 | int bytes_returned = 0; | |
2862 | __u16 params, byte_count, data_count, param_offset, offset; | |
2863 | ||
b6b38f70 | 2864 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
2865 | setAclRetry: |
2866 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2867 | (void **) &pSMBr); |
1da177e4 LT |
2868 | if (rc) |
2869 | return rc; | |
2870 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2871 | name_len = | |
50c2f753 | 2872 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2873 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2874 | name_len++; /* trailing null */ |
2875 | name_len *= 2; | |
50c2f753 | 2876 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2877 | name_len = strnlen(fileName, PATH_MAX); |
2878 | name_len++; /* trailing null */ | |
2879 | strncpy(pSMB->FileName, fileName, name_len); | |
2880 | } | |
2881 | params = 6 + name_len; | |
2882 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2883 | /* BB find max SMB size from sess */ |
2884 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2885 | pSMB->MaxSetupCount = 0; |
2886 | pSMB->Reserved = 0; | |
2887 | pSMB->Flags = 0; | |
2888 | pSMB->Timeout = 0; | |
2889 | pSMB->Reserved2 = 0; | |
2890 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2891 | InformationLevel) - 4; |
1da177e4 LT |
2892 | offset = param_offset + params; |
2893 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2894 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2895 | ||
2896 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2897 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2898 | |
790fe579 | 2899 | if (data_count == 0) { |
1da177e4 LT |
2900 | rc = -EOPNOTSUPP; |
2901 | goto setACLerrorExit; | |
2902 | } | |
2903 | pSMB->DataOffset = cpu_to_le16(offset); | |
2904 | pSMB->SetupCount = 1; | |
2905 | pSMB->Reserved3 = 0; | |
2906 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2907 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2908 | byte_count = 3 /* pad */ + params + data_count; | |
2909 | pSMB->DataCount = cpu_to_le16(data_count); | |
2910 | pSMB->TotalDataCount = pSMB->DataCount; | |
2911 | pSMB->ParameterCount = cpu_to_le16(params); | |
2912 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2913 | pSMB->Reserved4 = 0; | |
2914 | pSMB->hdr.smb_buf_length += byte_count; | |
2915 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2916 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2917 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2918 | if (rc) |
b6b38f70 | 2919 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
2920 | |
2921 | setACLerrorExit: | |
2922 | cifs_buf_release(pSMB); | |
2923 | if (rc == -EAGAIN) | |
2924 | goto setAclRetry; | |
2925 | return rc; | |
2926 | } | |
2927 | ||
f654bac2 SF |
2928 | /* BB fix tabs in this function FIXME BB */ |
2929 | int | |
2930 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 2931 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 2932 | { |
50c2f753 SF |
2933 | int rc = 0; |
2934 | struct smb_t2_qfi_req *pSMB = NULL; | |
2935 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2936 | int bytes_returned; | |
2937 | __u16 params, byte_count; | |
f654bac2 | 2938 | |
b6b38f70 | 2939 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
2940 | if (tcon == NULL) |
2941 | return -ENODEV; | |
f654bac2 SF |
2942 | |
2943 | GetExtAttrRetry: | |
790fe579 SF |
2944 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2945 | (void **) &pSMBr); | |
2946 | if (rc) | |
2947 | return rc; | |
f654bac2 | 2948 | |
ad7a2926 | 2949 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
2950 | pSMB->t2.TotalDataCount = 0; |
2951 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2952 | /* BB find exact max data count below from sess structure BB */ | |
2953 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2954 | pSMB->t2.MaxSetupCount = 0; | |
2955 | pSMB->t2.Reserved = 0; | |
2956 | pSMB->t2.Flags = 0; | |
2957 | pSMB->t2.Timeout = 0; | |
2958 | pSMB->t2.Reserved2 = 0; | |
2959 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
2960 | Fid) - 4); | |
2961 | pSMB->t2.DataCount = 0; | |
2962 | pSMB->t2.DataOffset = 0; | |
2963 | pSMB->t2.SetupCount = 1; | |
2964 | pSMB->t2.Reserved3 = 0; | |
2965 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
2966 | byte_count = params + 1 /* pad */ ; | |
2967 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
2968 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
2969 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
2970 | pSMB->Pad = 0; | |
f654bac2 | 2971 | pSMB->Fid = netfid; |
790fe579 SF |
2972 | pSMB->hdr.smb_buf_length += byte_count; |
2973 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
2974 | ||
2975 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2976 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2977 | if (rc) { | |
b6b38f70 | 2978 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
2979 | } else { |
2980 | /* decode response */ | |
2981 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2982 | if (rc || (pSMBr->ByteCount < 2)) | |
2983 | /* BB also check enough total bytes returned */ | |
2984 | /* If rc should we check for EOPNOSUPP and | |
2985 | disable the srvino flag? or in caller? */ | |
2986 | rc = -EIO; /* bad smb */ | |
2987 | else { | |
2988 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2989 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2990 | struct file_chattr_info *pfinfo; | |
2991 | /* BB Do we need a cast or hash here ? */ | |
2992 | if (count != 16) { | |
b6b38f70 | 2993 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
2994 | rc = -EIO; |
2995 | goto GetExtAttrOut; | |
2996 | } | |
2997 | pfinfo = (struct file_chattr_info *) | |
2998 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
2999 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3000 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3001 | } |
3002 | } | |
f654bac2 | 3003 | GetExtAttrOut: |
790fe579 SF |
3004 | cifs_buf_release(pSMB); |
3005 | if (rc == -EAGAIN) | |
3006 | goto GetExtAttrRetry; | |
3007 | return rc; | |
f654bac2 SF |
3008 | } |
3009 | ||
f654bac2 | 3010 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3011 | |
79df1bae JL |
3012 | #ifdef CONFIG_CIFS_ACL |
3013 | /* | |
3014 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3015 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3016 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3017 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3018 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3019 | * by caller | |
3020 | */ | |
3021 | static int | |
3022 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
3023 | const int parm_len, struct cifsTconInfo *tcon, | |
3024 | void **ret_buf) | |
3025 | { | |
3026 | int rc; | |
3027 | __u32 temp_offset; | |
3028 | struct smb_com_ntransact_req *pSMB; | |
3029 | ||
3030 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3031 | (void **)&pSMB); | |
3032 | if (rc) | |
3033 | return rc; | |
3034 | *ret_buf = (void *)pSMB; | |
3035 | pSMB->Reserved = 0; | |
3036 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3037 | pSMB->TotalDataCount = 0; | |
3038 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
3039 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3040 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3041 | pSMB->DataCount = pSMB->TotalDataCount; | |
3042 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3043 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3044 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3045 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3046 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3047 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3048 | return 0; | |
3049 | } | |
3050 | ||
3051 | static int | |
3052 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3053 | __u32 *pparmlen, __u32 *pdatalen) | |
3054 | { | |
3055 | char *end_of_smb; | |
3056 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3057 | struct smb_com_ntransact_rsp *pSMBr; | |
3058 | ||
3059 | *pdatalen = 0; | |
3060 | *pparmlen = 0; | |
3061 | ||
3062 | if (buf == NULL) | |
3063 | return -EINVAL; | |
3064 | ||
3065 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3066 | ||
3067 | /* ByteCount was converted from little endian in SendReceive */ | |
3068 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + | |
3069 | (char *)&pSMBr->ByteCount; | |
3070 | ||
3071 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3072 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3073 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3074 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3075 | ||
3076 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3077 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3078 | ||
3079 | /* should we also check that parm and data areas do not overlap? */ | |
3080 | if (*ppparm > end_of_smb) { | |
3081 | cFYI(1, "parms start after end of smb"); | |
3082 | return -EINVAL; | |
3083 | } else if (parm_count + *ppparm > end_of_smb) { | |
3084 | cFYI(1, "parm end after end of smb"); | |
3085 | return -EINVAL; | |
3086 | } else if (*ppdata > end_of_smb) { | |
3087 | cFYI(1, "data starts after end of smb"); | |
3088 | return -EINVAL; | |
3089 | } else if (data_count + *ppdata > end_of_smb) { | |
3090 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3091 | *ppdata, data_count, (data_count + *ppdata), | |
3092 | end_of_smb, pSMBr); | |
3093 | return -EINVAL; | |
3094 | } else if (parm_count + data_count > pSMBr->ByteCount) { | |
3095 | cFYI(1, "parm count and data count larger than SMB"); | |
3096 | return -EINVAL; | |
3097 | } | |
3098 | *pdatalen = data_count; | |
3099 | *pparmlen = parm_count; | |
3100 | return 0; | |
3101 | } | |
3102 | ||
0a4b92c0 SF |
3103 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3104 | int | |
3105 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3106 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3107 | { |
3108 | int rc = 0; | |
3109 | int buf_type = 0; | |
ad7a2926 | 3110 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3111 | struct kvec iov[1]; |
3112 | ||
b6b38f70 | 3113 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3114 | |
630f3f0c SF |
3115 | *pbuflen = 0; |
3116 | *acl_inf = NULL; | |
3117 | ||
b9c7a2bb | 3118 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3119 | 8 /* parm len */, tcon, (void **) &pSMB); |
3120 | if (rc) | |
3121 | return rc; | |
3122 | ||
3123 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3124 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3125 | pSMB->MaxSetupCount = 0; | |
3126 | pSMB->Fid = fid; /* file handle always le */ | |
3127 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3128 | CIFS_ACL_DACL); | |
3129 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3130 | pSMB->hdr.smb_buf_length += 11; | |
3131 | iov[0].iov_base = (char *)pSMB; | |
3132 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3133 | ||
a761ac57 | 3134 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3135 | 0); |
0a4b92c0 SF |
3136 | cifs_stats_inc(&tcon->num_acl_get); |
3137 | if (rc) { | |
b6b38f70 | 3138 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3139 | } else { /* decode response */ |
ad7a2926 | 3140 | __le32 *parm; |
630f3f0c SF |
3141 | __u32 parm_len; |
3142 | __u32 acl_len; | |
50c2f753 | 3143 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3144 | char *pdata; |
0a4b92c0 SF |
3145 | |
3146 | /* validate_nttransact */ | |
50c2f753 | 3147 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3148 | &pdata, &parm_len, pbuflen); |
790fe579 | 3149 | if (rc) |
0a4b92c0 SF |
3150 | goto qsec_out; |
3151 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3152 | ||
b6b38f70 | 3153 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3154 | |
3155 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3156 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3157 | *pbuflen = 0; |
0a4b92c0 SF |
3158 | goto qsec_out; |
3159 | } | |
3160 | ||
3161 | /* BB check that data area is minimum length and as big as acl_len */ | |
3162 | ||
af6f4612 | 3163 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3164 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3165 | cERROR(1, "acl length %d does not match %d", |
3166 | acl_len, *pbuflen); | |
630f3f0c SF |
3167 | if (*pbuflen > acl_len) |
3168 | *pbuflen = acl_len; | |
3169 | } | |
0a4b92c0 | 3170 | |
630f3f0c SF |
3171 | /* check if buffer is big enough for the acl |
3172 | header followed by the smallest SID */ | |
3173 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3174 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3175 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3176 | rc = -EINVAL; |
3177 | *pbuflen = 0; | |
3178 | } else { | |
3179 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3180 | if (*acl_inf == NULL) { | |
3181 | *pbuflen = 0; | |
3182 | rc = -ENOMEM; | |
3183 | } | |
3184 | memcpy(*acl_inf, pdata, *pbuflen); | |
3185 | } | |
0a4b92c0 SF |
3186 | } |
3187 | qsec_out: | |
790fe579 | 3188 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3189 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3190 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3191 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3192 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3193 | return rc; |
3194 | } | |
97837582 SF |
3195 | |
3196 | int | |
3197 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3198 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3199 | { | |
3200 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3201 | int rc = 0; | |
3202 | int bytes_returned = 0; | |
3203 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3204 | NTRANSACT_RSP *pSMBr = NULL; | |
3205 | ||
3206 | setCifsAclRetry: | |
3207 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3208 | (void **) &pSMBr); | |
3209 | if (rc) | |
3210 | return (rc); | |
3211 | ||
3212 | pSMB->MaxSetupCount = 0; | |
3213 | pSMB->Reserved = 0; | |
3214 | ||
3215 | param_count = 8; | |
3216 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3217 | data_count = acllen; | |
3218 | data_offset = param_offset + param_count; | |
3219 | byte_count = 3 /* pad */ + param_count; | |
3220 | ||
3221 | pSMB->DataCount = cpu_to_le32(data_count); | |
3222 | pSMB->TotalDataCount = pSMB->DataCount; | |
3223 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3224 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3225 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3226 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3227 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3228 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3229 | pSMB->SetupCount = 0; | |
3230 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3231 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3232 | ||
3233 | pSMB->Fid = fid; /* file handle always le */ | |
3234 | pSMB->Reserved2 = 0; | |
3235 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3236 | ||
3237 | if (pntsd && acllen) { | |
3238 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3239 | (char *) pntsd, | |
3240 | acllen); | |
3241 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3242 | ||
3243 | } else | |
3244 | pSMB->hdr.smb_buf_length += byte_count; | |
3245 | ||
3246 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3247 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3248 | ||
b6b38f70 | 3249 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3250 | if (rc) |
b6b38f70 | 3251 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3252 | cifs_buf_release(pSMB); |
3253 | ||
3254 | if (rc == -EAGAIN) | |
3255 | goto setCifsAclRetry; | |
3256 | ||
3257 | return (rc); | |
3258 | } | |
3259 | ||
79df1bae | 3260 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3261 | |
6b8edfe0 SF |
3262 | /* Legacy Query Path Information call for lookup to old servers such |
3263 | as Win9x/WinME */ | |
3264 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3265 | const unsigned char *searchName, |
3266 | FILE_ALL_INFO *pFinfo, | |
3267 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3268 | { |
ad7a2926 SF |
3269 | QUERY_INFORMATION_REQ *pSMB; |
3270 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3271 | int rc = 0; |
3272 | int bytes_returned; | |
3273 | int name_len; | |
3274 | ||
b6b38f70 | 3275 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3276 | QInfRetry: |
3277 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3278 | (void **) &pSMBr); |
6b8edfe0 SF |
3279 | if (rc) |
3280 | return rc; | |
3281 | ||
3282 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3283 | name_len = | |
50c2f753 SF |
3284 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3285 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3286 | name_len++; /* trailing null */ |
3287 | name_len *= 2; | |
50c2f753 | 3288 | } else { |
6b8edfe0 SF |
3289 | name_len = strnlen(searchName, PATH_MAX); |
3290 | name_len++; /* trailing null */ | |
3291 | strncpy(pSMB->FileName, searchName, name_len); | |
3292 | } | |
3293 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3294 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3295 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3296 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3297 | ||
3298 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3299 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3300 | if (rc) { |
b6b38f70 | 3301 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3302 | } else if (pFinfo) { |
1bd5bbcb SF |
3303 | struct timespec ts; |
3304 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3305 | |
3306 | /* decode response */ | |
1bd5bbcb | 3307 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3308 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3309 | ts.tv_nsec = 0; |
3310 | ts.tv_sec = time; | |
3311 | /* decode time fields */ | |
733f99ac | 3312 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3313 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3314 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3315 | pFinfo->AllocationSize = |
3316 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3317 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3318 | pFinfo->Attributes = | |
3319 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3320 | } else |
3321 | rc = -EIO; /* bad buffer passed in */ | |
3322 | ||
3323 | cifs_buf_release(pSMB); | |
3324 | ||
3325 | if (rc == -EAGAIN) | |
3326 | goto QInfRetry; | |
3327 | ||
3328 | return rc; | |
3329 | } | |
3330 | ||
bcd5357f JL |
3331 | int |
3332 | CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3333 | u16 netfid, FILE_ALL_INFO *pFindData) | |
3334 | { | |
3335 | struct smb_t2_qfi_req *pSMB = NULL; | |
3336 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3337 | int rc = 0; | |
3338 | int bytes_returned; | |
3339 | __u16 params, byte_count; | |
3340 | ||
3341 | QFileInfoRetry: | |
3342 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3343 | (void **) &pSMBr); | |
3344 | if (rc) | |
3345 | return rc; | |
3346 | ||
3347 | params = 2 /* level */ + 2 /* fid */; | |
3348 | pSMB->t2.TotalDataCount = 0; | |
3349 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3350 | /* BB find exact max data count below from sess structure BB */ | |
3351 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3352 | pSMB->t2.MaxSetupCount = 0; | |
3353 | pSMB->t2.Reserved = 0; | |
3354 | pSMB->t2.Flags = 0; | |
3355 | pSMB->t2.Timeout = 0; | |
3356 | pSMB->t2.Reserved2 = 0; | |
3357 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3358 | Fid) - 4); | |
3359 | pSMB->t2.DataCount = 0; | |
3360 | pSMB->t2.DataOffset = 0; | |
3361 | pSMB->t2.SetupCount = 1; | |
3362 | pSMB->t2.Reserved3 = 0; | |
3363 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3364 | byte_count = params + 1 /* pad */ ; | |
3365 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3366 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3367 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3368 | pSMB->Pad = 0; | |
3369 | pSMB->Fid = netfid; | |
3370 | pSMB->hdr.smb_buf_length += byte_count; | |
6b8edfe0 | 3371 | |
bcd5357f JL |
3372 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3373 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3374 | if (rc) { | |
f19159dc | 3375 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3376 | } else { /* decode response */ |
3377 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3378 | |
bcd5357f JL |
3379 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3380 | rc = -EIO; | |
3381 | else if (pSMBr->ByteCount < 40) | |
3382 | rc = -EIO; /* bad smb */ | |
3383 | else if (pFindData) { | |
3384 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3385 | memcpy((char *) pFindData, | |
3386 | (char *) &pSMBr->hdr.Protocol + | |
3387 | data_offset, sizeof(FILE_ALL_INFO)); | |
3388 | } else | |
3389 | rc = -ENOMEM; | |
3390 | } | |
3391 | cifs_buf_release(pSMB); | |
3392 | if (rc == -EAGAIN) | |
3393 | goto QFileInfoRetry; | |
6b8edfe0 | 3394 | |
bcd5357f JL |
3395 | return rc; |
3396 | } | |
6b8edfe0 | 3397 | |
1da177e4 LT |
3398 | int |
3399 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3400 | const unsigned char *searchName, | |
ad7a2926 | 3401 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3402 | int legacy /* old style infolevel */, |
737b758c | 3403 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3404 | { |
3405 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3406 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3407 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3408 | int rc = 0; | |
3409 | int bytes_returned; | |
3410 | int name_len; | |
3411 | __u16 params, byte_count; | |
3412 | ||
b6b38f70 | 3413 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3414 | QPathInfoRetry: |
3415 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3416 | (void **) &pSMBr); | |
3417 | if (rc) | |
3418 | return rc; | |
3419 | ||
3420 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3421 | name_len = | |
50c2f753 | 3422 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3423 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3424 | name_len++; /* trailing null */ |
3425 | name_len *= 2; | |
50c2f753 | 3426 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3427 | name_len = strnlen(searchName, PATH_MAX); |
3428 | name_len++; /* trailing null */ | |
3429 | strncpy(pSMB->FileName, searchName, name_len); | |
3430 | } | |
3431 | ||
50c2f753 | 3432 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3433 | pSMB->TotalDataCount = 0; |
3434 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3435 | /* BB find exact max SMB PDU from sess structure BB */ |
3436 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3437 | pSMB->MaxSetupCount = 0; |
3438 | pSMB->Reserved = 0; | |
3439 | pSMB->Flags = 0; | |
3440 | pSMB->Timeout = 0; | |
3441 | pSMB->Reserved2 = 0; | |
3442 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3443 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3444 | pSMB->DataCount = 0; |
3445 | pSMB->DataOffset = 0; | |
3446 | pSMB->SetupCount = 1; | |
3447 | pSMB->Reserved3 = 0; | |
3448 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3449 | byte_count = params + 1 /* pad */ ; | |
3450 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3451 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3452 | if (legacy) |
acf1a1b1 SF |
3453 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3454 | else | |
3455 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3456 | pSMB->Reserved4 = 0; |
3457 | pSMB->hdr.smb_buf_length += byte_count; | |
3458 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3459 | ||
3460 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3461 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3462 | if (rc) { | |
b6b38f70 | 3463 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3464 | } else { /* decode response */ |
3465 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3466 | ||
acf1a1b1 SF |
3467 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3468 | rc = -EIO; | |
50c2f753 | 3469 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3470 | rc = -EIO; /* bad smb */ |
790fe579 | 3471 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3472 | rc = -EIO; /* 24 or 26 expected but we do not read |
3473 | last field */ | |
3474 | else if (pFindData) { | |
acf1a1b1 | 3475 | int size; |
1da177e4 | 3476 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3477 | |
3478 | /* On legacy responses we do not read the last field, | |
3479 | EAsize, fortunately since it varies by subdialect and | |
3480 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3481 | bytes depending but we don't care here */ | |
3482 | if (legacy) | |
acf1a1b1 SF |
3483 | size = sizeof(FILE_INFO_STANDARD); |
3484 | else | |
3485 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3486 | memcpy((char *) pFindData, |
3487 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3488 | data_offset, size); |
1da177e4 LT |
3489 | } else |
3490 | rc = -ENOMEM; | |
3491 | } | |
3492 | cifs_buf_release(pSMB); | |
3493 | if (rc == -EAGAIN) | |
3494 | goto QPathInfoRetry; | |
3495 | ||
3496 | return rc; | |
3497 | } | |
3498 | ||
c8634fd3 JL |
3499 | int |
3500 | CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3501 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) | |
3502 | { | |
3503 | struct smb_t2_qfi_req *pSMB = NULL; | |
3504 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3505 | int rc = 0; | |
3506 | int bytes_returned; | |
3507 | __u16 params, byte_count; | |
3508 | ||
3509 | UnixQFileInfoRetry: | |
3510 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3511 | (void **) &pSMBr); | |
3512 | if (rc) | |
3513 | return rc; | |
3514 | ||
3515 | params = 2 /* level */ + 2 /* fid */; | |
3516 | pSMB->t2.TotalDataCount = 0; | |
3517 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3518 | /* BB find exact max data count below from sess structure BB */ | |
3519 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3520 | pSMB->t2.MaxSetupCount = 0; | |
3521 | pSMB->t2.Reserved = 0; | |
3522 | pSMB->t2.Flags = 0; | |
3523 | pSMB->t2.Timeout = 0; | |
3524 | pSMB->t2.Reserved2 = 0; | |
3525 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3526 | Fid) - 4); | |
3527 | pSMB->t2.DataCount = 0; | |
3528 | pSMB->t2.DataOffset = 0; | |
3529 | pSMB->t2.SetupCount = 1; | |
3530 | pSMB->t2.Reserved3 = 0; | |
3531 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3532 | byte_count = params + 1 /* pad */ ; | |
3533 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3534 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3535 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3536 | pSMB->Pad = 0; | |
3537 | pSMB->Fid = netfid; | |
3538 | pSMB->hdr.smb_buf_length += byte_count; | |
3539 | ||
3540 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3541 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3542 | if (rc) { | |
f19159dc | 3543 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3544 | } else { /* decode response */ |
3545 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3546 | ||
3547 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
f19159dc | 3548 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3549 | "Unix Extensions can be disabled on mount " |
f19159dc | 3550 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3551 | rc = -EIO; /* bad smb */ |
3552 | } else { | |
3553 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3554 | memcpy((char *) pFindData, | |
3555 | (char *) &pSMBr->hdr.Protocol + | |
3556 | data_offset, | |
3557 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3558 | } | |
3559 | } | |
3560 | ||
3561 | cifs_buf_release(pSMB); | |
3562 | if (rc == -EAGAIN) | |
3563 | goto UnixQFileInfoRetry; | |
3564 | ||
3565 | return rc; | |
3566 | } | |
3567 | ||
1da177e4 LT |
3568 | int |
3569 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3570 | const unsigned char *searchName, | |
582d21e5 | 3571 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3572 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3573 | { |
3574 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3575 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3576 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3577 | int rc = 0; | |
3578 | int bytes_returned = 0; | |
3579 | int name_len; | |
3580 | __u16 params, byte_count; | |
3581 | ||
b6b38f70 | 3582 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3583 | UnixQPathInfoRetry: |
3584 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3585 | (void **) &pSMBr); | |
3586 | if (rc) | |
3587 | return rc; | |
3588 | ||
3589 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3590 | name_len = | |
b1a45695 | 3591 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3592 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3593 | name_len++; /* trailing null */ |
3594 | name_len *= 2; | |
50c2f753 | 3595 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3596 | name_len = strnlen(searchName, PATH_MAX); |
3597 | name_len++; /* trailing null */ | |
3598 | strncpy(pSMB->FileName, searchName, name_len); | |
3599 | } | |
3600 | ||
50c2f753 | 3601 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3602 | pSMB->TotalDataCount = 0; |
3603 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3604 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3605 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3606 | pSMB->MaxSetupCount = 0; |
3607 | pSMB->Reserved = 0; | |
3608 | pSMB->Flags = 0; | |
3609 | pSMB->Timeout = 0; | |
3610 | pSMB->Reserved2 = 0; | |
3611 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3612 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3613 | pSMB->DataCount = 0; |
3614 | pSMB->DataOffset = 0; | |
3615 | pSMB->SetupCount = 1; | |
3616 | pSMB->Reserved3 = 0; | |
3617 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3618 | byte_count = params + 1 /* pad */ ; | |
3619 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3620 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3621 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3622 | pSMB->Reserved4 = 0; | |
3623 | pSMB->hdr.smb_buf_length += byte_count; | |
3624 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3625 | ||
3626 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3627 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3628 | if (rc) { | |
b6b38f70 | 3629 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3630 | } else { /* decode response */ |
3631 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3632 | ||
3633 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
b6b38f70 | 3634 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3635 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3636 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3637 | rc = -EIO; /* bad smb */ |
3638 | } else { | |
3639 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3640 | memcpy((char *) pFindData, | |
3641 | (char *) &pSMBr->hdr.Protocol + | |
3642 | data_offset, | |
630f3f0c | 3643 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3644 | } |
3645 | } | |
3646 | cifs_buf_release(pSMB); | |
3647 | if (rc == -EAGAIN) | |
3648 | goto UnixQPathInfoRetry; | |
3649 | ||
3650 | return rc; | |
3651 | } | |
3652 | ||
1da177e4 LT |
3653 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3654 | int | |
3655 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3656 | const char *searchName, |
1da177e4 | 3657 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3658 | __u16 *pnetfid, |
3659 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3660 | { |
3661 | /* level 257 SMB_ */ | |
3662 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3663 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3664 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3665 | int rc = 0; |
3666 | int bytes_returned = 0; | |
3667 | int name_len; | |
3668 | __u16 params, byte_count; | |
3669 | ||
b6b38f70 | 3670 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3671 | |
3672 | findFirstRetry: | |
3673 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3674 | (void **) &pSMBr); | |
3675 | if (rc) | |
3676 | return rc; | |
3677 | ||
3678 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3679 | name_len = | |
50c2f753 | 3680 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3681 | PATH_MAX, nls_codepage, remap); |
3682 | /* We can not add the asterik earlier in case | |
3683 | it got remapped to 0xF03A as if it were part of the | |
3684 | directory name instead of a wildcard */ | |
1da177e4 | 3685 | name_len *= 2; |
ac67055e | 3686 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3687 | pSMB->FileName[name_len+1] = 0; |
3688 | pSMB->FileName[name_len+2] = '*'; | |
3689 | pSMB->FileName[name_len+3] = 0; | |
3690 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3691 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3692 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3693 | name_len += 2; |
1da177e4 LT |
3694 | } else { /* BB add check for overrun of SMB buf BB */ |
3695 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3696 | /* BB fix here and in unicode clause above ie |
790fe579 | 3697 | if (name_len > buffersize-header) |
1da177e4 LT |
3698 | free buffer exit; BB */ |
3699 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3700 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3701 | pSMB->FileName[name_len+1] = '*'; |
3702 | pSMB->FileName[name_len+2] = 0; | |
3703 | name_len += 3; | |
1da177e4 LT |
3704 | } |
3705 | ||
3706 | params = 12 + name_len /* includes null */ ; | |
3707 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3708 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3709 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3710 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3711 | pSMB->MaxSetupCount = 0; | |
3712 | pSMB->Reserved = 0; | |
3713 | pSMB->Flags = 0; | |
3714 | pSMB->Timeout = 0; | |
3715 | pSMB->Reserved2 = 0; | |
3716 | byte_count = params + 1 /* pad */ ; | |
3717 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3718 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3719 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3720 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3721 | - 4); | |
1da177e4 LT |
3722 | pSMB->DataCount = 0; |
3723 | pSMB->DataOffset = 0; | |
3724 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3725 | pSMB->Reserved3 = 0; | |
3726 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3727 | pSMB->SearchAttributes = | |
3728 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3729 | ATTR_DIRECTORY); | |
50c2f753 SF |
3730 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3731 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3732 | CIFS_SEARCH_RETURN_RESUME); |
3733 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3734 | ||
3735 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3736 | pSMB->SearchStorageType = 0; | |
3737 | pSMB->hdr.smb_buf_length += byte_count; | |
3738 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3739 | ||
3740 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3741 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3742 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3743 | |
88274815 SF |
3744 | if (rc) {/* BB add logic to retry regular search if Unix search |
3745 | rejected unexpectedly by server */ | |
1da177e4 | 3746 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 3747 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 3748 | |
88274815 | 3749 | cifs_buf_release(pSMB); |
1da177e4 LT |
3750 | |
3751 | /* BB eventually could optimize out free and realloc of buf */ | |
3752 | /* for this case */ | |
3753 | if (rc == -EAGAIN) | |
3754 | goto findFirstRetry; | |
3755 | } else { /* decode response */ | |
3756 | /* BB remember to free buffer if error BB */ | |
3757 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3758 | if (rc == 0) { |
b77d753c SF |
3759 | unsigned int lnoff; |
3760 | ||
1da177e4 | 3761 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3762 | psrch_inf->unicode = true; |
1da177e4 | 3763 | else |
4b18f2a9 | 3764 | psrch_inf->unicode = false; |
1da177e4 LT |
3765 | |
3766 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3767 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3768 | psrch_inf->srch_entries_start = |
3769 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3770 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3771 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3772 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3773 | ||
790fe579 | 3774 | if (parms->EndofSearch) |
4b18f2a9 | 3775 | psrch_inf->endOfSearch = true; |
1da177e4 | 3776 | else |
4b18f2a9 | 3777 | psrch_inf->endOfSearch = false; |
1da177e4 | 3778 | |
50c2f753 SF |
3779 | psrch_inf->entries_in_buffer = |
3780 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3781 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3782 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3783 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3784 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3785 | lnoff) { | |
b6b38f70 | 3786 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3787 | psrch_inf->last_entry = NULL; |
3788 | return rc; | |
3789 | } | |
3790 | ||
0752f152 | 3791 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3792 | lnoff; |
3793 | ||
1da177e4 LT |
3794 | *pnetfid = parms->SearchHandle; |
3795 | } else { | |
3796 | cifs_buf_release(pSMB); | |
3797 | } | |
3798 | } | |
3799 | ||
3800 | return rc; | |
3801 | } | |
3802 | ||
3803 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3804 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3805 | { |
3806 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3807 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3808 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3809 | char *response_data; |
3810 | int rc = 0; | |
3811 | int bytes_returned, name_len; | |
3812 | __u16 params, byte_count; | |
3813 | ||
b6b38f70 | 3814 | cFYI(1, "In FindNext"); |
1da177e4 | 3815 | |
4b18f2a9 | 3816 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3817 | return -ENOENT; |
3818 | ||
3819 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3820 | (void **) &pSMBr); | |
3821 | if (rc) | |
3822 | return rc; | |
3823 | ||
50c2f753 | 3824 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3825 | byte_count = 0; |
3826 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3827 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3828 | pSMB->MaxDataCount = | |
50c2f753 SF |
3829 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3830 | 0xFFFFFF00); | |
1da177e4 LT |
3831 | pSMB->MaxSetupCount = 0; |
3832 | pSMB->Reserved = 0; | |
3833 | pSMB->Flags = 0; | |
3834 | pSMB->Timeout = 0; | |
3835 | pSMB->Reserved2 = 0; | |
3836 | pSMB->ParameterOffset = cpu_to_le16( | |
3837 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3838 | pSMB->DataCount = 0; | |
3839 | pSMB->DataOffset = 0; | |
3840 | pSMB->SetupCount = 1; | |
3841 | pSMB->Reserved3 = 0; | |
3842 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3843 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3844 | pSMB->SearchCount = | |
630f3f0c | 3845 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3846 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3847 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3848 | pSMB->SearchFlags = | |
3849 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3850 | ||
3851 | name_len = psrch_inf->resume_name_len; | |
3852 | params += name_len; | |
790fe579 | 3853 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3854 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3855 | byte_count += name_len; | |
ef6724e3 SF |
3856 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3857 | pSMB->ResumeFileName[name_len] = 0; | |
3858 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3859 | } else { |
3860 | rc = -EINVAL; | |
3861 | goto FNext2_err_exit; | |
3862 | } | |
3863 | byte_count = params + 1 /* pad */ ; | |
3864 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3865 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3866 | pSMB->hdr.smb_buf_length += byte_count; | |
3867 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3868 | |
1da177e4 LT |
3869 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3870 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3871 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3872 | if (rc) { |
3873 | if (rc == -EBADF) { | |
4b18f2a9 | 3874 | psrch_inf->endOfSearch = true; |
6353450a | 3875 | cifs_buf_release(pSMB); |
50c2f753 | 3876 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 3877 | } else |
b6b38f70 | 3878 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
3879 | } else { /* decode response */ |
3880 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3881 | |
790fe579 | 3882 | if (rc == 0) { |
b77d753c SF |
3883 | unsigned int lnoff; |
3884 | ||
1da177e4 LT |
3885 | /* BB fixme add lock for file (srch_info) struct here */ |
3886 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3887 | psrch_inf->unicode = true; |
1da177e4 | 3888 | else |
4b18f2a9 | 3889 | psrch_inf->unicode = false; |
1da177e4 LT |
3890 | response_data = (char *) &pSMBr->hdr.Protocol + |
3891 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3892 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3893 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3894 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3895 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3896 | cifs_small_buf_release( |
3897 | psrch_inf->ntwrk_buf_start); | |
3898 | else | |
3899 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3900 | psrch_inf->srch_entries_start = response_data; |
3901 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3902 | psrch_inf->smallBuf = 0; |
790fe579 | 3903 | if (parms->EndofSearch) |
4b18f2a9 | 3904 | psrch_inf->endOfSearch = true; |
1da177e4 | 3905 | else |
4b18f2a9 | 3906 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3907 | psrch_inf->entries_in_buffer = |
3908 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3909 | psrch_inf->index_of_last_entry += |
3910 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3911 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3912 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3913 | lnoff) { | |
b6b38f70 | 3914 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3915 | psrch_inf->last_entry = NULL; |
3916 | return rc; | |
3917 | } else | |
3918 | psrch_inf->last_entry = | |
3919 | psrch_inf->srch_entries_start + lnoff; | |
3920 | ||
b6b38f70 JP |
3921 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
3922 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
3923 | |
3924 | /* BB fixme add unlock here */ | |
3925 | } | |
3926 | ||
3927 | } | |
3928 | ||
3929 | /* BB On error, should we leave previous search buf (and count and | |
3930 | last entry fields) intact or free the previous one? */ | |
3931 | ||
3932 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3933 | since file handle passed in no longer valid */ | |
3934 | FNext2_err_exit: | |
3935 | if (rc != 0) | |
3936 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3937 | return rc; |
3938 | } | |
3939 | ||
3940 | int | |
50c2f753 SF |
3941 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3942 | const __u16 searchHandle) | |
1da177e4 LT |
3943 | { |
3944 | int rc = 0; | |
3945 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 3946 | |
b6b38f70 | 3947 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
3948 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
3949 | ||
3950 | /* no sense returning error if session restarted | |
3951 | as file handle has been closed */ | |
790fe579 | 3952 | if (rc == -EAGAIN) |
1da177e4 LT |
3953 | return 0; |
3954 | if (rc) | |
3955 | return rc; | |
3956 | ||
1da177e4 LT |
3957 | pSMB->FileID = searchHandle; |
3958 | pSMB->ByteCount = 0; | |
133672ef | 3959 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3960 | if (rc) |
b6b38f70 | 3961 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 3962 | |
a4544347 | 3963 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3964 | |
3965 | /* Since session is dead, search handle closed on server already */ | |
3966 | if (rc == -EAGAIN) | |
3967 | rc = 0; | |
3968 | ||
3969 | return rc; | |
3970 | } | |
3971 | ||
1da177e4 LT |
3972 | int |
3973 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3974 | const unsigned char *searchName, |
ad7a2926 | 3975 | __u64 *inode_number, |
50c2f753 | 3976 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3977 | { |
3978 | int rc = 0; | |
3979 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3980 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3981 | int name_len, bytes_returned; | |
3982 | __u16 params, byte_count; | |
3983 | ||
b6b38f70 | 3984 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 3985 | if (tcon == NULL) |
50c2f753 | 3986 | return -ENODEV; |
1da177e4 LT |
3987 | |
3988 | GetInodeNumberRetry: | |
3989 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3990 | (void **) &pSMBr); |
1da177e4 LT |
3991 | if (rc) |
3992 | return rc; | |
3993 | ||
1da177e4 LT |
3994 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3995 | name_len = | |
b1a45695 | 3996 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 3997 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3998 | name_len++; /* trailing null */ |
3999 | name_len *= 2; | |
50c2f753 | 4000 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4001 | name_len = strnlen(searchName, PATH_MAX); |
4002 | name_len++; /* trailing null */ | |
4003 | strncpy(pSMB->FileName, searchName, name_len); | |
4004 | } | |
4005 | ||
4006 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4007 | pSMB->TotalDataCount = 0; | |
4008 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4009 | /* BB find exact max data count below from sess structure BB */ | |
4010 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4011 | pSMB->MaxSetupCount = 0; | |
4012 | pSMB->Reserved = 0; | |
4013 | pSMB->Flags = 0; | |
4014 | pSMB->Timeout = 0; | |
4015 | pSMB->Reserved2 = 0; | |
4016 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4017 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4018 | pSMB->DataCount = 0; |
4019 | pSMB->DataOffset = 0; | |
4020 | pSMB->SetupCount = 1; | |
4021 | pSMB->Reserved3 = 0; | |
4022 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4023 | byte_count = params + 1 /* pad */ ; | |
4024 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4025 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4026 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4027 | pSMB->Reserved4 = 0; | |
4028 | pSMB->hdr.smb_buf_length += byte_count; | |
4029 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4030 | ||
4031 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4032 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4033 | if (rc) { | |
b6b38f70 | 4034 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4035 | } else { |
4036 | /* decode response */ | |
4037 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4038 | if (rc || (pSMBr->ByteCount < 2)) | |
4039 | /* BB also check enough total bytes returned */ | |
4040 | /* If rc should we check for EOPNOSUPP and | |
4041 | disable the srvino flag? or in caller? */ | |
4042 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4043 | else { |
1da177e4 LT |
4044 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4045 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4046 | struct file_internal_info *pfinfo; |
1da177e4 | 4047 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4048 | if (count < 8) { |
b6b38f70 | 4049 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4050 | rc = -EIO; |
4051 | goto GetInodeNumOut; | |
4052 | } | |
4053 | pfinfo = (struct file_internal_info *) | |
4054 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4055 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4056 | } |
4057 | } | |
4058 | GetInodeNumOut: | |
4059 | cifs_buf_release(pSMB); | |
4060 | if (rc == -EAGAIN) | |
4061 | goto GetInodeNumberRetry; | |
4062 | return rc; | |
4063 | } | |
1da177e4 | 4064 | |
fec4585f IM |
4065 | /* parses DFS refferal V3 structure |
4066 | * caller is responsible for freeing target_nodes | |
4067 | * returns: | |
4068 | * on success - 0 | |
4069 | * on failure - errno | |
4070 | */ | |
4071 | static int | |
a1fe78f1 | 4072 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4073 | unsigned int *num_of_nodes, |
4074 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4075 | const struct nls_table *nls_codepage, int remap, |
4076 | const char *searchName) | |
fec4585f IM |
4077 | { |
4078 | int i, rc = 0; | |
4079 | char *data_end; | |
4080 | bool is_unicode; | |
4081 | struct dfs_referral_level_3 *ref; | |
4082 | ||
5ca33c6a HH |
4083 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4084 | is_unicode = true; | |
4085 | else | |
4086 | is_unicode = false; | |
fec4585f IM |
4087 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4088 | ||
4089 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4090 | cERROR(1, "num_referrals: must be at least > 0," |
4091 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4092 | rc = -EINVAL; |
a1fe78f1 | 4093 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4094 | } |
4095 | ||
4096 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4097 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4098 | cERROR(1, "Referrals of V%d version are not supported," |
4099 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4100 | rc = -EINVAL; |
a1fe78f1 | 4101 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4102 | } |
4103 | ||
4104 | /* get the upper boundary of the resp buffer */ | |
4105 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4106 | le16_to_cpu(pSMBr->t2.DataCount); | |
4107 | ||
f19159dc | 4108 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4109 | *num_of_nodes, |
b6b38f70 | 4110 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4111 | |
4112 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4113 | *num_of_nodes, GFP_KERNEL); | |
4114 | if (*target_nodes == NULL) { | |
b6b38f70 | 4115 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4116 | rc = -ENOMEM; |
a1fe78f1 | 4117 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4118 | } |
4119 | ||
3ad2f3fb | 4120 | /* collect necessary data from referrals */ |
fec4585f IM |
4121 | for (i = 0; i < *num_of_nodes; i++) { |
4122 | char *temp; | |
4123 | int max_len; | |
4124 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4125 | ||
0e0d2cf3 | 4126 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4127 | if (is_unicode) { |
331c3135 JL |
4128 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4129 | GFP_KERNEL); | |
2920ee2b SF |
4130 | if (tmp == NULL) { |
4131 | rc = -ENOMEM; | |
4132 | goto parse_DFS_referrals_exit; | |
4133 | } | |
2c55608f IM |
4134 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4135 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4136 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4137 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4138 | nls_codepage); |
4139 | kfree(tmp); | |
4140 | } else | |
4141 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4142 | ||
fec4585f IM |
4143 | node->server_type = le16_to_cpu(ref->ServerType); |
4144 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4145 | ||
4146 | /* copy DfsPath */ | |
4147 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4148 | max_len = data_end - temp; | |
d185cda7 SF |
4149 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4150 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4151 | if (!node->path_name) { |
4152 | rc = -ENOMEM; | |
a1fe78f1 | 4153 | goto parse_DFS_referrals_exit; |
066ce689 | 4154 | } |
fec4585f IM |
4155 | |
4156 | /* copy link target UNC */ | |
4157 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4158 | max_len = data_end - temp; | |
d185cda7 SF |
4159 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4160 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4161 | if (!node->node_name) |
4162 | rc = -ENOMEM; | |
fec4585f IM |
4163 | } |
4164 | ||
a1fe78f1 | 4165 | parse_DFS_referrals_exit: |
fec4585f IM |
4166 | if (rc) { |
4167 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4168 | *target_nodes = NULL; | |
4169 | *num_of_nodes = 0; | |
4170 | } | |
4171 | return rc; | |
4172 | } | |
4173 | ||
1da177e4 LT |
4174 | int |
4175 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
4176 | const unsigned char *searchName, | |
c2cf07d5 SF |
4177 | struct dfs_info3_param **target_nodes, |
4178 | unsigned int *num_of_nodes, | |
737b758c | 4179 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4180 | { |
4181 | /* TRANS2_GET_DFS_REFERRAL */ | |
4182 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4183 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4184 | int rc = 0; |
4185 | int bytes_returned; | |
4186 | int name_len; | |
1da177e4 | 4187 | __u16 params, byte_count; |
c2cf07d5 SF |
4188 | *num_of_nodes = 0; |
4189 | *target_nodes = NULL; | |
1da177e4 | 4190 | |
b6b38f70 | 4191 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4192 | if (ses == NULL) |
4193 | return -ENODEV; | |
4194 | getDFSRetry: | |
4195 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4196 | (void **) &pSMBr); | |
4197 | if (rc) | |
4198 | return rc; | |
50c2f753 SF |
4199 | |
4200 | /* server pointer checked in called function, | |
1982c344 SF |
4201 | but should never be null here anyway */ |
4202 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4203 | pSMB->hdr.Tid = ses->ipc_tid; |
4204 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4205 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4206 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4207 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4208 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4209 | |
4210 | if (ses->capabilities & CAP_UNICODE) { | |
4211 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4212 | name_len = | |
b1a45695 | 4213 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4214 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4215 | name_len++; /* trailing null */ |
4216 | name_len *= 2; | |
50c2f753 | 4217 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4218 | name_len = strnlen(searchName, PATH_MAX); |
4219 | name_len++; /* trailing null */ | |
4220 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4221 | } | |
4222 | ||
790fe579 SF |
4223 | if (ses->server) { |
4224 | if (ses->server->secMode & | |
1a4e15a0 SF |
4225 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4226 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4227 | } | |
4228 | ||
50c2f753 | 4229 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4230 | |
1da177e4 LT |
4231 | params = 2 /* level */ + name_len /*includes null */ ; |
4232 | pSMB->TotalDataCount = 0; | |
4233 | pSMB->DataCount = 0; | |
4234 | pSMB->DataOffset = 0; | |
4235 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4236 | /* BB find exact max SMB PDU from sess structure BB */ |
4237 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4238 | pSMB->MaxSetupCount = 0; |
4239 | pSMB->Reserved = 0; | |
4240 | pSMB->Flags = 0; | |
4241 | pSMB->Timeout = 0; | |
4242 | pSMB->Reserved2 = 0; | |
4243 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4244 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4245 | pSMB->SetupCount = 1; |
4246 | pSMB->Reserved3 = 0; | |
4247 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4248 | byte_count = params + 3 /* pad */ ; | |
4249 | pSMB->ParameterCount = cpu_to_le16(params); | |
4250 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4251 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
4252 | pSMB->hdr.smb_buf_length += byte_count; | |
4253 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4254 | ||
4255 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4256 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4257 | if (rc) { | |
b6b38f70 | 4258 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4259 | goto GetDFSRefExit; |
4260 | } | |
4261 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4262 | |
c2cf07d5 | 4263 | /* BB Also check if enough total bytes returned? */ |
fec4585f | 4264 | if (rc || (pSMBr->ByteCount < 17)) { |
c2cf07d5 | 4265 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4266 | goto GetDFSRefExit; |
4267 | } | |
c2cf07d5 | 4268 | |
b6b38f70 | 4269 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
fec4585f | 4270 | pSMBr->ByteCount, |
b6b38f70 | 4271 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4272 | |
fec4585f | 4273 | /* parse returned result into more usable form */ |
a1fe78f1 | 4274 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4275 | target_nodes, nls_codepage, remap, |
4276 | searchName); | |
c2cf07d5 | 4277 | |
1da177e4 | 4278 | GetDFSRefExit: |
0d817bc0 | 4279 | cifs_buf_release(pSMB); |
1da177e4 LT |
4280 | |
4281 | if (rc == -EAGAIN) | |
4282 | goto getDFSRetry; | |
4283 | ||
4284 | return rc; | |
4285 | } | |
4286 | ||
20962438 SF |
4287 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4288 | int | |
4289 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4290 | { | |
4291 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4292 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4293 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4294 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4295 | int rc = 0; | |
4296 | int bytes_returned = 0; | |
4297 | __u16 params, byte_count; | |
4298 | ||
b6b38f70 | 4299 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4300 | oldQFSInfoRetry: |
4301 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4302 | (void **) &pSMBr); | |
4303 | if (rc) | |
4304 | return rc; | |
20962438 SF |
4305 | |
4306 | params = 2; /* level */ | |
4307 | pSMB->TotalDataCount = 0; | |
4308 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4309 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4310 | pSMB->MaxSetupCount = 0; | |
4311 | pSMB->Reserved = 0; | |
4312 | pSMB->Flags = 0; | |
4313 | pSMB->Timeout = 0; | |
4314 | pSMB->Reserved2 = 0; | |
4315 | byte_count = params + 1 /* pad */ ; | |
4316 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4317 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4318 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4319 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4320 | pSMB->DataCount = 0; | |
4321 | pSMB->DataOffset = 0; | |
4322 | pSMB->SetupCount = 1; | |
4323 | pSMB->Reserved3 = 0; | |
4324 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4325 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4326 | pSMB->hdr.smb_buf_length += byte_count; | |
4327 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4328 | ||
4329 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4330 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4331 | if (rc) { | |
b6b38f70 | 4332 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4333 | } else { /* decode response */ |
4334 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4335 | ||
4336 | if (rc || (pSMBr->ByteCount < 18)) | |
4337 | rc = -EIO; /* bad smb */ | |
4338 | else { | |
4339 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 JP |
4340 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
4341 | pSMBr->ByteCount, data_offset); | |
20962438 | 4342 | |
50c2f753 | 4343 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4344 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4345 | FSData->f_bsize = | |
4346 | le16_to_cpu(response_data->BytesPerSector) * | |
4347 | le32_to_cpu(response_data-> | |
4348 | SectorsPerAllocationUnit); | |
4349 | FSData->f_blocks = | |
50c2f753 | 4350 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4351 | FSData->f_bfree = FSData->f_bavail = |
4352 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4353 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4354 | (unsigned long long)FSData->f_blocks, | |
4355 | (unsigned long long)FSData->f_bfree, | |
4356 | FSData->f_bsize); | |
20962438 SF |
4357 | } |
4358 | } | |
4359 | cifs_buf_release(pSMB); | |
4360 | ||
4361 | if (rc == -EAGAIN) | |
4362 | goto oldQFSInfoRetry; | |
4363 | ||
4364 | return rc; | |
4365 | } | |
4366 | ||
1da177e4 | 4367 | int |
737b758c | 4368 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4369 | { |
4370 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4371 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4372 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4373 | FILE_SYSTEM_INFO *response_data; | |
4374 | int rc = 0; | |
4375 | int bytes_returned = 0; | |
4376 | __u16 params, byte_count; | |
4377 | ||
b6b38f70 | 4378 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4379 | QFSInfoRetry: |
4380 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4381 | (void **) &pSMBr); | |
4382 | if (rc) | |
4383 | return rc; | |
4384 | ||
4385 | params = 2; /* level */ | |
4386 | pSMB->TotalDataCount = 0; | |
4387 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4388 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4389 | pSMB->MaxSetupCount = 0; |
4390 | pSMB->Reserved = 0; | |
4391 | pSMB->Flags = 0; | |
4392 | pSMB->Timeout = 0; | |
4393 | pSMB->Reserved2 = 0; | |
4394 | byte_count = params + 1 /* pad */ ; | |
4395 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4396 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4397 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4398 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4399 | pSMB->DataCount = 0; |
4400 | pSMB->DataOffset = 0; | |
4401 | pSMB->SetupCount = 1; | |
4402 | pSMB->Reserved3 = 0; | |
4403 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4404 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4405 | pSMB->hdr.smb_buf_length += byte_count; | |
4406 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4407 | ||
4408 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4409 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4410 | if (rc) { | |
b6b38f70 | 4411 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4412 | } else { /* decode response */ |
50c2f753 | 4413 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4414 | |
20962438 | 4415 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4416 | rc = -EIO; /* bad smb */ |
4417 | else { | |
4418 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4419 | |
4420 | response_data = | |
4421 | (FILE_SYSTEM_INFO | |
4422 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4423 | data_offset); | |
4424 | FSData->f_bsize = | |
4425 | le32_to_cpu(response_data->BytesPerSector) * | |
4426 | le32_to_cpu(response_data-> | |
4427 | SectorsPerAllocationUnit); | |
4428 | FSData->f_blocks = | |
4429 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4430 | FSData->f_bfree = FSData->f_bavail = | |
4431 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4432 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4433 | (unsigned long long)FSData->f_blocks, | |
4434 | (unsigned long long)FSData->f_bfree, | |
4435 | FSData->f_bsize); | |
1da177e4 LT |
4436 | } |
4437 | } | |
4438 | cifs_buf_release(pSMB); | |
4439 | ||
4440 | if (rc == -EAGAIN) | |
4441 | goto QFSInfoRetry; | |
4442 | ||
4443 | return rc; | |
4444 | } | |
4445 | ||
4446 | int | |
737b758c | 4447 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4448 | { |
4449 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4450 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4451 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4452 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4453 | int rc = 0; | |
4454 | int bytes_returned = 0; | |
4455 | __u16 params, byte_count; | |
4456 | ||
b6b38f70 | 4457 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4458 | QFSAttributeRetry: |
4459 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4460 | (void **) &pSMBr); | |
4461 | if (rc) | |
4462 | return rc; | |
4463 | ||
4464 | params = 2; /* level */ | |
4465 | pSMB->TotalDataCount = 0; | |
4466 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4467 | /* BB find exact max SMB PDU from sess structure BB */ |
4468 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4469 | pSMB->MaxSetupCount = 0; |
4470 | pSMB->Reserved = 0; | |
4471 | pSMB->Flags = 0; | |
4472 | pSMB->Timeout = 0; | |
4473 | pSMB->Reserved2 = 0; | |
4474 | byte_count = params + 1 /* pad */ ; | |
4475 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4476 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4477 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4478 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4479 | pSMB->DataCount = 0; |
4480 | pSMB->DataOffset = 0; | |
4481 | pSMB->SetupCount = 1; | |
4482 | pSMB->Reserved3 = 0; | |
4483 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4484 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
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) { | |
b6b38f70 | 4491 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4492 | } else { /* decode response */ |
4493 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4494 | ||
50c2f753 SF |
4495 | if (rc || (pSMBr->ByteCount < 13)) { |
4496 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4497 | rc = -EIO; /* bad smb */ |
4498 | } else { | |
4499 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4500 | response_data = | |
4501 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4502 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4503 | data_offset); | |
4504 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4505 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4506 | } |
4507 | } | |
4508 | cifs_buf_release(pSMB); | |
4509 | ||
4510 | if (rc == -EAGAIN) | |
4511 | goto QFSAttributeRetry; | |
4512 | ||
4513 | return rc; | |
4514 | } | |
4515 | ||
4516 | int | |
737b758c | 4517 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4518 | { |
4519 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4520 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4521 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4522 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4523 | int rc = 0; | |
4524 | int bytes_returned = 0; | |
4525 | __u16 params, byte_count; | |
4526 | ||
b6b38f70 | 4527 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4528 | QFSDeviceRetry: |
4529 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4530 | (void **) &pSMBr); | |
4531 | if (rc) | |
4532 | return rc; | |
4533 | ||
4534 | params = 2; /* level */ | |
4535 | pSMB->TotalDataCount = 0; | |
4536 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4537 | /* BB find exact max SMB PDU from sess structure BB */ |
4538 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4539 | pSMB->MaxSetupCount = 0; |
4540 | pSMB->Reserved = 0; | |
4541 | pSMB->Flags = 0; | |
4542 | pSMB->Timeout = 0; | |
4543 | pSMB->Reserved2 = 0; | |
4544 | byte_count = params + 1 /* pad */ ; | |
4545 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4546 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4547 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4548 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4549 | |
4550 | pSMB->DataCount = 0; | |
4551 | pSMB->DataOffset = 0; | |
4552 | pSMB->SetupCount = 1; | |
4553 | pSMB->Reserved3 = 0; | |
4554 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4555 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4556 | pSMB->hdr.smb_buf_length += byte_count; | |
4557 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4558 | ||
4559 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4560 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4561 | if (rc) { | |
b6b38f70 | 4562 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4563 | } else { /* decode response */ |
4564 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4565 | ||
630f3f0c | 4566 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) |
1da177e4 LT |
4567 | rc = -EIO; /* bad smb */ |
4568 | else { | |
4569 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4570 | response_data = | |
737b758c SF |
4571 | (FILE_SYSTEM_DEVICE_INFO *) |
4572 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4573 | data_offset); |
4574 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4575 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4576 | } |
4577 | } | |
4578 | cifs_buf_release(pSMB); | |
4579 | ||
4580 | if (rc == -EAGAIN) | |
4581 | goto QFSDeviceRetry; | |
4582 | ||
4583 | return rc; | |
4584 | } | |
4585 | ||
4586 | int | |
737b758c | 4587 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4588 | { |
4589 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4590 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4591 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4592 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4593 | int rc = 0; | |
4594 | int bytes_returned = 0; | |
4595 | __u16 params, byte_count; | |
4596 | ||
b6b38f70 | 4597 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 4598 | QFSUnixRetry: |
f569599a JL |
4599 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4600 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4601 | if (rc) |
4602 | return rc; | |
4603 | ||
4604 | params = 2; /* level */ | |
4605 | pSMB->TotalDataCount = 0; | |
4606 | pSMB->DataCount = 0; | |
4607 | pSMB->DataOffset = 0; | |
4608 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4609 | /* BB find exact max SMB PDU from sess structure BB */ |
4610 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4611 | pSMB->MaxSetupCount = 0; |
4612 | pSMB->Reserved = 0; | |
4613 | pSMB->Flags = 0; | |
4614 | pSMB->Timeout = 0; | |
4615 | pSMB->Reserved2 = 0; | |
4616 | byte_count = params + 1 /* pad */ ; | |
4617 | pSMB->ParameterCount = cpu_to_le16(params); | |
4618 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4619 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4620 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4621 | pSMB->SetupCount = 1; |
4622 | pSMB->Reserved3 = 0; | |
4623 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4624 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4625 | pSMB->hdr.smb_buf_length += byte_count; | |
4626 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4627 | ||
4628 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4629 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4630 | if (rc) { | |
b6b38f70 | 4631 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4632 | } else { /* decode response */ |
4633 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4634 | ||
4635 | if (rc || (pSMBr->ByteCount < 13)) { | |
4636 | rc = -EIO; /* bad smb */ | |
4637 | } else { | |
4638 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4639 | response_data = | |
4640 | (FILE_SYSTEM_UNIX_INFO | |
4641 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4642 | data_offset); | |
4643 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4644 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4645 | } |
4646 | } | |
4647 | cifs_buf_release(pSMB); | |
4648 | ||
4649 | if (rc == -EAGAIN) | |
4650 | goto QFSUnixRetry; | |
4651 | ||
4652 | ||
4653 | return rc; | |
4654 | } | |
4655 | ||
ac67055e | 4656 | int |
45abc6ee | 4657 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4658 | { |
4659 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4660 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4661 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4662 | int rc = 0; | |
4663 | int bytes_returned = 0; | |
4664 | __u16 params, param_offset, offset, byte_count; | |
4665 | ||
b6b38f70 | 4666 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4667 | SETFSUnixRetry: |
f26282c9 | 4668 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4669 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4670 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4671 | if (rc) |
4672 | return rc; | |
4673 | ||
4674 | params = 4; /* 2 bytes zero followed by info level. */ | |
4675 | pSMB->MaxSetupCount = 0; | |
4676 | pSMB->Reserved = 0; | |
4677 | pSMB->Flags = 0; | |
4678 | pSMB->Timeout = 0; | |
4679 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4680 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4681 | - 4; | |
ac67055e JA |
4682 | offset = param_offset + params; |
4683 | ||
4684 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4685 | /* BB find exact max SMB PDU from sess structure BB */ |
4686 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4687 | pSMB->SetupCount = 1; |
4688 | pSMB->Reserved3 = 0; | |
4689 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4690 | byte_count = 1 /* pad */ + params + 12; | |
4691 | ||
4692 | pSMB->DataCount = cpu_to_le16(12); | |
4693 | pSMB->ParameterCount = cpu_to_le16(params); | |
4694 | pSMB->TotalDataCount = pSMB->DataCount; | |
4695 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4696 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4697 | pSMB->DataOffset = cpu_to_le16(offset); | |
4698 | ||
4699 | /* Params. */ | |
4700 | pSMB->FileNum = 0; | |
4701 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4702 | ||
4703 | /* Data. */ | |
4704 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4705 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4706 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4707 | ||
4708 | pSMB->hdr.smb_buf_length += byte_count; | |
4709 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4710 | ||
4711 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4712 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4713 | if (rc) { | |
b6b38f70 | 4714 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4715 | } else { /* decode response */ |
4716 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4717 | if (rc) |
ac67055e | 4718 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4719 | } |
4720 | cifs_buf_release(pSMB); | |
4721 | ||
4722 | if (rc == -EAGAIN) | |
4723 | goto SETFSUnixRetry; | |
4724 | ||
4725 | return rc; | |
4726 | } | |
4727 | ||
4728 | ||
1da177e4 LT |
4729 | |
4730 | int | |
4731 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4732 | struct kstatfs *FSData) |
1da177e4 LT |
4733 | { |
4734 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4735 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4736 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4737 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4738 | int rc = 0; | |
4739 | int bytes_returned = 0; | |
4740 | __u16 params, byte_count; | |
4741 | ||
b6b38f70 | 4742 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
4743 | QFSPosixRetry: |
4744 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4745 | (void **) &pSMBr); | |
4746 | if (rc) | |
4747 | return rc; | |
4748 | ||
4749 | params = 2; /* level */ | |
4750 | pSMB->TotalDataCount = 0; | |
4751 | pSMB->DataCount = 0; | |
4752 | pSMB->DataOffset = 0; | |
4753 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4754 | /* BB find exact max SMB PDU from sess structure BB */ |
4755 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4756 | pSMB->MaxSetupCount = 0; |
4757 | pSMB->Reserved = 0; | |
4758 | pSMB->Flags = 0; | |
4759 | pSMB->Timeout = 0; | |
4760 | pSMB->Reserved2 = 0; | |
4761 | byte_count = params + 1 /* pad */ ; | |
4762 | pSMB->ParameterCount = cpu_to_le16(params); | |
4763 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4764 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4765 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4766 | pSMB->SetupCount = 1; |
4767 | pSMB->Reserved3 = 0; | |
4768 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4769 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4770 | pSMB->hdr.smb_buf_length += byte_count; | |
4771 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4772 | ||
4773 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4774 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4775 | if (rc) { | |
b6b38f70 | 4776 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4777 | } else { /* decode response */ |
4778 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4779 | ||
4780 | if (rc || (pSMBr->ByteCount < 13)) { | |
4781 | rc = -EIO; /* bad smb */ | |
4782 | } else { | |
4783 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4784 | response_data = | |
4785 | (FILE_SYSTEM_POSIX_INFO | |
4786 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4787 | data_offset); | |
4788 | FSData->f_bsize = | |
4789 | le32_to_cpu(response_data->BlockSize); | |
4790 | FSData->f_blocks = | |
4791 | le64_to_cpu(response_data->TotalBlocks); | |
4792 | FSData->f_bfree = | |
4793 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4794 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4795 | FSData->f_bavail = FSData->f_bfree; |
4796 | } else { | |
4797 | FSData->f_bavail = | |
50c2f753 | 4798 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4799 | } |
790fe579 | 4800 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4801 | FSData->f_files = |
50c2f753 | 4802 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4803 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4804 | FSData->f_ffree = |
50c2f753 | 4805 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4806 | } |
4807 | } | |
4808 | cifs_buf_release(pSMB); | |
4809 | ||
4810 | if (rc == -EAGAIN) | |
4811 | goto QFSPosixRetry; | |
4812 | ||
4813 | return rc; | |
4814 | } | |
4815 | ||
4816 | ||
50c2f753 SF |
4817 | /* We can not use write of zero bytes trick to |
4818 | set file size due to need for large file support. Also note that | |
4819 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4820 | routine which is only needed to work around a sharing violation bug |
4821 | in Samba which this routine can run into */ | |
4822 | ||
4823 | int | |
4824 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4825 | __u64 size, bool SetAllocation, |
737b758c | 4826 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4827 | { |
4828 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4829 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4830 | struct file_end_of_file_info *parm_data; | |
4831 | int name_len; | |
4832 | int rc = 0; | |
4833 | int bytes_returned = 0; | |
4834 | __u16 params, byte_count, data_count, param_offset, offset; | |
4835 | ||
b6b38f70 | 4836 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
4837 | SetEOFRetry: |
4838 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4839 | (void **) &pSMBr); | |
4840 | if (rc) | |
4841 | return rc; | |
4842 | ||
4843 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4844 | name_len = | |
b1a45695 | 4845 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4846 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4847 | name_len++; /* trailing null */ |
4848 | name_len *= 2; | |
3e87d803 | 4849 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4850 | name_len = strnlen(fileName, PATH_MAX); |
4851 | name_len++; /* trailing null */ | |
4852 | strncpy(pSMB->FileName, fileName, name_len); | |
4853 | } | |
4854 | params = 6 + name_len; | |
26f57364 | 4855 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4856 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4857 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4858 | pSMB->MaxSetupCount = 0; |
4859 | pSMB->Reserved = 0; | |
4860 | pSMB->Flags = 0; | |
4861 | pSMB->Timeout = 0; | |
4862 | pSMB->Reserved2 = 0; | |
4863 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4864 | InformationLevel) - 4; |
1da177e4 | 4865 | offset = param_offset + params; |
790fe579 | 4866 | if (SetAllocation) { |
50c2f753 SF |
4867 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4868 | pSMB->InformationLevel = | |
4869 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4870 | else | |
4871 | pSMB->InformationLevel = | |
4872 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4873 | } else /* Set File Size */ { | |
1da177e4 LT |
4874 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4875 | pSMB->InformationLevel = | |
50c2f753 | 4876 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4877 | else |
4878 | pSMB->InformationLevel = | |
50c2f753 | 4879 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4880 | } |
4881 | ||
4882 | parm_data = | |
4883 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4884 | offset); | |
4885 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4886 | pSMB->DataOffset = cpu_to_le16(offset); | |
4887 | pSMB->SetupCount = 1; | |
4888 | pSMB->Reserved3 = 0; | |
4889 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4890 | byte_count = 3 /* pad */ + params + data_count; | |
4891 | pSMB->DataCount = cpu_to_le16(data_count); | |
4892 | pSMB->TotalDataCount = pSMB->DataCount; | |
4893 | pSMB->ParameterCount = cpu_to_le16(params); | |
4894 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4895 | pSMB->Reserved4 = 0; | |
4896 | pSMB->hdr.smb_buf_length += byte_count; | |
4897 | parm_data->FileSize = cpu_to_le64(size); | |
4898 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4899 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4900 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4901 | if (rc) |
b6b38f70 | 4902 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
4903 | |
4904 | cifs_buf_release(pSMB); | |
4905 | ||
4906 | if (rc == -EAGAIN) | |
4907 | goto SetEOFRetry; | |
4908 | ||
4909 | return rc; | |
4910 | } | |
4911 | ||
4912 | int | |
50c2f753 | 4913 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4914 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4915 | { |
4916 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4917 | char *data_offset; |
4918 | struct file_end_of_file_info *parm_data; | |
4919 | int rc = 0; | |
1da177e4 LT |
4920 | __u16 params, param_offset, offset, byte_count, count; |
4921 | ||
b6b38f70 JP |
4922 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
4923 | (long long)size); | |
cd63499c SF |
4924 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4925 | ||
1da177e4 LT |
4926 | if (rc) |
4927 | return rc; | |
4928 | ||
4929 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4930 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4931 | |
1da177e4 LT |
4932 | params = 6; |
4933 | pSMB->MaxSetupCount = 0; | |
4934 | pSMB->Reserved = 0; | |
4935 | pSMB->Flags = 0; | |
4936 | pSMB->Timeout = 0; | |
4937 | pSMB->Reserved2 = 0; | |
4938 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4939 | offset = param_offset + params; | |
4940 | ||
50c2f753 | 4941 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 LT |
4942 | |
4943 | count = sizeof(struct file_end_of_file_info); | |
4944 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4945 | /* BB find exact max SMB PDU from sess structure BB */ |
4946 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4947 | pSMB->SetupCount = 1; |
4948 | pSMB->Reserved3 = 0; | |
4949 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4950 | byte_count = 3 /* pad */ + params + count; | |
4951 | pSMB->DataCount = cpu_to_le16(count); | |
4952 | pSMB->ParameterCount = cpu_to_le16(params); | |
4953 | pSMB->TotalDataCount = pSMB->DataCount; | |
4954 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4955 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4956 | parm_data = | |
50c2f753 SF |
4957 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4958 | + offset); | |
1da177e4 LT |
4959 | pSMB->DataOffset = cpu_to_le16(offset); |
4960 | parm_data->FileSize = cpu_to_le64(size); | |
4961 | pSMB->Fid = fid; | |
790fe579 | 4962 | if (SetAllocation) { |
1da177e4 LT |
4963 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4964 | pSMB->InformationLevel = | |
4965 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4966 | else | |
4967 | pSMB->InformationLevel = | |
4968 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4969 | } else /* Set File Size */ { |
1da177e4 LT |
4970 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4971 | pSMB->InformationLevel = | |
50c2f753 | 4972 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4973 | else |
4974 | pSMB->InformationLevel = | |
50c2f753 | 4975 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4976 | } |
4977 | pSMB->Reserved4 = 0; | |
4978 | pSMB->hdr.smb_buf_length += byte_count; | |
4979 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
133672ef | 4980 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 4981 | if (rc) { |
b6b38f70 | 4982 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
4983 | } |
4984 | ||
50c2f753 | 4985 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4986 | since file handle passed in no longer valid */ |
4987 | ||
4988 | return rc; | |
4989 | } | |
4990 | ||
50c2f753 | 4991 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4992 | an open handle, rather than by pathname - this is awkward due to |
4993 | potential access conflicts on the open, but it is unavoidable for these | |
4994 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4995 | time and resort to the original setpathinfo level which takes the ancient | |
4996 | DOS time format with 2 second granularity */ | |
4997 | int | |
2dd2dfa0 JL |
4998 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
4999 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
5000 | { |
5001 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5002 | char *data_offset; |
5003 | int rc = 0; | |
1da177e4 LT |
5004 | __u16 params, param_offset, offset, byte_count, count; |
5005 | ||
b6b38f70 | 5006 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5007 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5008 | ||
1da177e4 LT |
5009 | if (rc) |
5010 | return rc; | |
5011 | ||
2dd2dfa0 JL |
5012 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5013 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5014 | |
1da177e4 LT |
5015 | params = 6; |
5016 | pSMB->MaxSetupCount = 0; | |
5017 | pSMB->Reserved = 0; | |
5018 | pSMB->Flags = 0; | |
5019 | pSMB->Timeout = 0; | |
5020 | pSMB->Reserved2 = 0; | |
5021 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5022 | offset = param_offset + params; | |
5023 | ||
50c2f753 | 5024 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 5025 | |
26f57364 | 5026 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5027 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5028 | /* BB find max SMB PDU from sess */ |
5029 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5030 | pSMB->SetupCount = 1; |
5031 | pSMB->Reserved3 = 0; | |
5032 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5033 | byte_count = 3 /* pad */ + params + count; | |
5034 | pSMB->DataCount = cpu_to_le16(count); | |
5035 | pSMB->ParameterCount = cpu_to_le16(params); | |
5036 | pSMB->TotalDataCount = pSMB->DataCount; | |
5037 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5038 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5039 | pSMB->DataOffset = cpu_to_le16(offset); | |
5040 | pSMB->Fid = fid; | |
5041 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5042 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5043 | else | |
5044 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5045 | pSMB->Reserved4 = 0; | |
5046 | pSMB->hdr.smb_buf_length += byte_count; | |
5047 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 5048 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 5049 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 5050 | if (rc) |
b6b38f70 | 5051 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5052 | |
50c2f753 | 5053 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5054 | since file handle passed in no longer valid */ |
5055 | ||
5056 | return rc; | |
5057 | } | |
5058 | ||
6d22f098 JL |
5059 | int |
5060 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
5061 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
5062 | { | |
5063 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5064 | char *data_offset; | |
5065 | int rc = 0; | |
5066 | __u16 params, param_offset, offset, byte_count, count; | |
5067 | ||
b6b38f70 | 5068 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5069 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5070 | ||
5071 | if (rc) | |
5072 | return rc; | |
5073 | ||
5074 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5075 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5076 | ||
5077 | params = 6; | |
5078 | pSMB->MaxSetupCount = 0; | |
5079 | pSMB->Reserved = 0; | |
5080 | pSMB->Flags = 0; | |
5081 | pSMB->Timeout = 0; | |
5082 | pSMB->Reserved2 = 0; | |
5083 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5084 | offset = param_offset + params; | |
5085 | ||
5086 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5087 | ||
5088 | count = 1; | |
5089 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5090 | /* BB find max SMB PDU from sess */ | |
5091 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5092 | pSMB->SetupCount = 1; | |
5093 | pSMB->Reserved3 = 0; | |
5094 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5095 | byte_count = 3 /* pad */ + params + count; | |
5096 | pSMB->DataCount = cpu_to_le16(count); | |
5097 | pSMB->ParameterCount = cpu_to_le16(params); | |
5098 | pSMB->TotalDataCount = pSMB->DataCount; | |
5099 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5100 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5101 | pSMB->DataOffset = cpu_to_le16(offset); | |
5102 | pSMB->Fid = fid; | |
5103 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5104 | pSMB->Reserved4 = 0; | |
5105 | pSMB->hdr.smb_buf_length += byte_count; | |
5106 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5107 | *data_offset = delete_file ? 1 : 0; | |
5108 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5109 | if (rc) | |
b6b38f70 | 5110 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5111 | |
5112 | return rc; | |
5113 | } | |
1da177e4 LT |
5114 | |
5115 | int | |
6fc000e5 JL |
5116 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
5117 | const char *fileName, const FILE_BASIC_INFO *data, | |
5118 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5119 | { |
5120 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5121 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5122 | int name_len; | |
5123 | int rc = 0; | |
5124 | int bytes_returned = 0; | |
5125 | char *data_offset; | |
5126 | __u16 params, param_offset, offset, byte_count, count; | |
5127 | ||
b6b38f70 | 5128 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5129 | |
5130 | SetTimesRetry: | |
5131 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5132 | (void **) &pSMBr); | |
5133 | if (rc) | |
5134 | return rc; | |
5135 | ||
5136 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5137 | name_len = | |
b1a45695 | 5138 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5139 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5140 | name_len++; /* trailing null */ |
5141 | name_len *= 2; | |
50c2f753 | 5142 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5143 | name_len = strnlen(fileName, PATH_MAX); |
5144 | name_len++; /* trailing null */ | |
5145 | strncpy(pSMB->FileName, fileName, name_len); | |
5146 | } | |
5147 | ||
5148 | params = 6 + name_len; | |
26f57364 | 5149 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5150 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5151 | /* BB find max SMB PDU from sess structure BB */ |
5152 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5153 | pSMB->MaxSetupCount = 0; |
5154 | pSMB->Reserved = 0; | |
5155 | pSMB->Flags = 0; | |
5156 | pSMB->Timeout = 0; | |
5157 | pSMB->Reserved2 = 0; | |
5158 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5159 | InformationLevel) - 4; |
1da177e4 LT |
5160 | offset = param_offset + params; |
5161 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5162 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5163 | pSMB->DataOffset = cpu_to_le16(offset); | |
5164 | pSMB->SetupCount = 1; | |
5165 | pSMB->Reserved3 = 0; | |
5166 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5167 | byte_count = 3 /* pad */ + params + count; | |
5168 | ||
5169 | pSMB->DataCount = cpu_to_le16(count); | |
5170 | pSMB->ParameterCount = cpu_to_le16(params); | |
5171 | pSMB->TotalDataCount = pSMB->DataCount; | |
5172 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5173 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5174 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5175 | else | |
5176 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5177 | pSMB->Reserved4 = 0; | |
5178 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 5179 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5180 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5181 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5182 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5183 | if (rc) |
b6b38f70 | 5184 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5185 | |
5186 | cifs_buf_release(pSMB); | |
5187 | ||
5188 | if (rc == -EAGAIN) | |
5189 | goto SetTimesRetry; | |
5190 | ||
5191 | return rc; | |
5192 | } | |
5193 | ||
5194 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5195 | /* Can be used to set attributes */ | |
5196 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5197 | handling it anyway and NT4 was what we thought it would be needed for | |
5198 | Do not delete it until we prove whether needed for Win9x though */ | |
5199 | int | |
5200 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5201 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5202 | { | |
5203 | SETATTR_REQ *pSMB = NULL; | |
5204 | SETATTR_RSP *pSMBr = NULL; | |
5205 | int rc = 0; | |
5206 | int bytes_returned; | |
5207 | int name_len; | |
5208 | ||
b6b38f70 | 5209 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5210 | |
5211 | SetAttrLgcyRetry: | |
5212 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5213 | (void **) &pSMBr); | |
5214 | if (rc) | |
5215 | return rc; | |
5216 | ||
5217 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5218 | name_len = | |
50c2f753 | 5219 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5220 | PATH_MAX, nls_codepage); |
5221 | name_len++; /* trailing null */ | |
5222 | name_len *= 2; | |
50c2f753 | 5223 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5224 | name_len = strnlen(fileName, PATH_MAX); |
5225 | name_len++; /* trailing null */ | |
5226 | strncpy(pSMB->fileName, fileName, name_len); | |
5227 | } | |
5228 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5229 | pSMB->BufferFormat = 0x04; | |
5230 | pSMB->hdr.smb_buf_length += name_len + 1; | |
5231 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
5232 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5233 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5234 | if (rc) |
b6b38f70 | 5235 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5236 | |
5237 | cifs_buf_release(pSMB); | |
5238 | ||
5239 | if (rc == -EAGAIN) | |
5240 | goto SetAttrLgcyRetry; | |
5241 | ||
5242 | return rc; | |
5243 | } | |
5244 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5245 | ||
654cf14a JL |
5246 | static void |
5247 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5248 | const struct cifs_unix_set_info_args *args) | |
5249 | { | |
5250 | u64 mode = args->mode; | |
5251 | ||
5252 | /* | |
5253 | * Samba server ignores set of file size to zero due to bugs in some | |
5254 | * older clients, but we should be precise - we use SetFileSize to | |
5255 | * set file size and do not want to truncate file size to zero | |
5256 | * accidently as happened on one Samba server beta by putting | |
5257 | * zero instead of -1 here | |
5258 | */ | |
5259 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5260 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5261 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5262 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5263 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5264 | data_offset->Uid = cpu_to_le64(args->uid); | |
5265 | data_offset->Gid = cpu_to_le64(args->gid); | |
5266 | /* better to leave device as zero when it is */ | |
5267 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5268 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5269 | data_offset->Permissions = cpu_to_le64(mode); | |
5270 | ||
5271 | if (S_ISREG(mode)) | |
5272 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5273 | else if (S_ISDIR(mode)) | |
5274 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5275 | else if (S_ISLNK(mode)) | |
5276 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5277 | else if (S_ISCHR(mode)) | |
5278 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5279 | else if (S_ISBLK(mode)) | |
5280 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5281 | else if (S_ISFIFO(mode)) | |
5282 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5283 | else if (S_ISSOCK(mode)) | |
5284 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5285 | } | |
5286 | ||
3bbeeb3c JL |
5287 | int |
5288 | CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon, | |
5289 | const struct cifs_unix_set_info_args *args, | |
5290 | u16 fid, u32 pid_of_opener) | |
5291 | { | |
5292 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5293 | FILE_UNIX_BASIC_INFO *data_offset; | |
5294 | int rc = 0; | |
5295 | u16 params, param_offset, offset, byte_count, count; | |
5296 | ||
b6b38f70 | 5297 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5298 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5299 | ||
5300 | if (rc) | |
5301 | return rc; | |
5302 | ||
5303 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5304 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5305 | ||
5306 | params = 6; | |
5307 | pSMB->MaxSetupCount = 0; | |
5308 | pSMB->Reserved = 0; | |
5309 | pSMB->Flags = 0; | |
5310 | pSMB->Timeout = 0; | |
5311 | pSMB->Reserved2 = 0; | |
5312 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5313 | offset = param_offset + params; | |
5314 | ||
5315 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5316 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5317 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5318 | ||
5319 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5320 | /* BB find max SMB PDU from sess */ | |
5321 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5322 | pSMB->SetupCount = 1; | |
5323 | pSMB->Reserved3 = 0; | |
5324 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5325 | byte_count = 3 /* pad */ + params + count; | |
5326 | pSMB->DataCount = cpu_to_le16(count); | |
5327 | pSMB->ParameterCount = cpu_to_le16(params); | |
5328 | pSMB->TotalDataCount = pSMB->DataCount; | |
5329 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5330 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5331 | pSMB->DataOffset = cpu_to_le16(offset); | |
5332 | pSMB->Fid = fid; | |
5333 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5334 | pSMB->Reserved4 = 0; | |
5335 | pSMB->hdr.smb_buf_length += byte_count; | |
5336 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5337 | ||
5338 | cifs_fill_unix_set_info(data_offset, args); | |
5339 | ||
5340 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5341 | if (rc) | |
b6b38f70 | 5342 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5343 | |
5344 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5345 | since file handle passed in no longer valid */ | |
5346 | ||
5347 | return rc; | |
5348 | } | |
5349 | ||
1da177e4 | 5350 | int |
01ea95e3 JL |
5351 | CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
5352 | const struct cifs_unix_set_info_args *args, | |
5353 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5354 | { |
5355 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5356 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5357 | int name_len; | |
5358 | int rc = 0; | |
5359 | int bytes_returned = 0; | |
5360 | FILE_UNIX_BASIC_INFO *data_offset; | |
5361 | __u16 params, param_offset, offset, count, byte_count; | |
5362 | ||
b6b38f70 | 5363 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5364 | setPermsRetry: |
5365 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5366 | (void **) &pSMBr); | |
5367 | if (rc) | |
5368 | return rc; | |
5369 | ||
5370 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5371 | name_len = | |
50c2f753 | 5372 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5373 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5374 | name_len++; /* trailing null */ |
5375 | name_len *= 2; | |
3e87d803 | 5376 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5377 | name_len = strnlen(fileName, PATH_MAX); |
5378 | name_len++; /* trailing null */ | |
5379 | strncpy(pSMB->FileName, fileName, name_len); | |
5380 | } | |
5381 | ||
5382 | params = 6 + name_len; | |
26f57364 | 5383 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5384 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5385 | /* BB find max SMB PDU from sess structure BB */ |
5386 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5387 | pSMB->MaxSetupCount = 0; |
5388 | pSMB->Reserved = 0; | |
5389 | pSMB->Flags = 0; | |
5390 | pSMB->Timeout = 0; | |
5391 | pSMB->Reserved2 = 0; | |
5392 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5393 | InformationLevel) - 4; |
1da177e4 LT |
5394 | offset = param_offset + params; |
5395 | data_offset = | |
5396 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5397 | offset); | |
5398 | memset(data_offset, 0, count); | |
5399 | pSMB->DataOffset = cpu_to_le16(offset); | |
5400 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5401 | pSMB->SetupCount = 1; | |
5402 | pSMB->Reserved3 = 0; | |
5403 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5404 | byte_count = 3 /* pad */ + params + count; | |
5405 | pSMB->ParameterCount = cpu_to_le16(params); | |
5406 | pSMB->DataCount = cpu_to_le16(count); | |
5407 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5408 | pSMB->TotalDataCount = pSMB->DataCount; | |
5409 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5410 | pSMB->Reserved4 = 0; | |
5411 | pSMB->hdr.smb_buf_length += byte_count; | |
1da177e4 | 5412 | |
654cf14a | 5413 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5414 | |
5415 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5416 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5417 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5418 | if (rc) |
b6b38f70 | 5419 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5420 | |
0d817bc0 | 5421 | cifs_buf_release(pSMB); |
1da177e4 LT |
5422 | if (rc == -EAGAIN) |
5423 | goto setPermsRetry; | |
5424 | return rc; | |
5425 | } | |
5426 | ||
50c2f753 | 5427 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
167a251a | 5428 | const int notify_subdirs, const __u16 netfid, |
50c2f753 | 5429 | __u32 filter, struct file *pfile, int multishot, |
167a251a | 5430 | const struct nls_table *nls_codepage) |
1da177e4 LT |
5431 | { |
5432 | int rc = 0; | |
50c2f753 SF |
5433 | struct smb_com_transaction_change_notify_req *pSMB = NULL; |
5434 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
abb15b8a | 5435 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
5436 | int bytes_returned; |
5437 | ||
b6b38f70 | 5438 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); |
1da177e4 | 5439 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
50c2f753 | 5440 | (void **) &pSMBr); |
1da177e4 LT |
5441 | if (rc) |
5442 | return rc; | |
5443 | ||
5444 | pSMB->TotalParameterCount = 0 ; | |
5445 | pSMB->TotalDataCount = 0; | |
5446 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5447 | /* BB find exact data count max from sess structure BB */ | |
5448 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
5449 | /* BB VERIFY verify which is correct for above BB */ |
5450 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5451 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5452 | ||
1da177e4 LT |
5453 | pSMB->MaxSetupCount = 4; |
5454 | pSMB->Reserved = 0; | |
5455 | pSMB->ParameterOffset = 0; | |
5456 | pSMB->DataCount = 0; | |
5457 | pSMB->DataOffset = 0; | |
5458 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5459 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5460 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 5461 | if (notify_subdirs) |
1da177e4 LT |
5462 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
5463 | pSMB->Reserved2 = 0; | |
5464 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5465 | pSMB->Fid = netfid; /* file handle always le */ | |
5466 | pSMB->ByteCount = 0; | |
5467 | ||
5468 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef SF |
5469 | (struct smb_hdr *)pSMBr, &bytes_returned, |
5470 | CIFS_ASYNC_OP); | |
1da177e4 | 5471 | if (rc) { |
b6b38f70 | 5472 | cFYI(1, "Error in Notify = %d", rc); |
ff5dbd9e SF |
5473 | } else { |
5474 | /* Add file to outstanding requests */ | |
50c2f753 | 5475 | /* BB change to kmem cache alloc */ |
5cbded58 | 5476 | dnotify_req = kmalloc( |
47c786e7 SF |
5477 | sizeof(struct dir_notify_req), |
5478 | GFP_KERNEL); | |
790fe579 | 5479 | if (dnotify_req) { |
47c786e7 SF |
5480 | dnotify_req->Pid = pSMB->hdr.Pid; |
5481 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5482 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5483 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5484 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5485 | dnotify_req->netfid = netfid; | |
5486 | dnotify_req->pfile = pfile; | |
5487 | dnotify_req->filter = filter; | |
5488 | dnotify_req->multishot = multishot; | |
5489 | spin_lock(&GlobalMid_Lock); | |
50c2f753 | 5490 | list_add_tail(&dnotify_req->lhead, |
47c786e7 SF |
5491 | &GlobalDnotifyReqList); |
5492 | spin_unlock(&GlobalMid_Lock); | |
50c2f753 | 5493 | } else |
47c786e7 | 5494 | rc = -ENOMEM; |
1da177e4 LT |
5495 | } |
5496 | cifs_buf_release(pSMB); | |
50c2f753 | 5497 | return rc; |
1da177e4 | 5498 | } |
31c0519f | 5499 | |
1da177e4 | 5500 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5501 | /* |
5502 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5503 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5504 | * it looks for that attribute name and stuffs that value into the EAData | |
5505 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5506 | * buffer. In both cases, the return value is either the length of the | |
5507 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5508 | * the data isn't copied to it, but the length is returned. | |
5509 | */ | |
1da177e4 LT |
5510 | ssize_t |
5511 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
31c0519f JL |
5512 | const unsigned char *searchName, const unsigned char *ea_name, |
5513 | char *EAData, size_t buf_size, | |
5514 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5515 | { |
5516 | /* BB assumes one setup word */ | |
5517 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5518 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5519 | int rc = 0; | |
5520 | int bytes_returned; | |
6e462b9f | 5521 | int list_len; |
f0d3868b | 5522 | struct fealist *ea_response_data; |
50c2f753 SF |
5523 | struct fea *temp_fea; |
5524 | char *temp_ptr; | |
0cd126b5 | 5525 | char *end_of_smb; |
f0d3868b | 5526 | __u16 params, byte_count, data_offset; |
1da177e4 | 5527 | |
b6b38f70 | 5528 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5529 | QAllEAsRetry: |
5530 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5531 | (void **) &pSMBr); | |
5532 | if (rc) | |
5533 | return rc; | |
5534 | ||
5535 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5536 | list_len = |
50c2f753 | 5537 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5538 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5539 | list_len++; /* trailing null */ |
5540 | list_len *= 2; | |
1da177e4 | 5541 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5542 | list_len = strnlen(searchName, PATH_MAX); |
5543 | list_len++; /* trailing null */ | |
5544 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5545 | } |
5546 | ||
6e462b9f | 5547 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5548 | pSMB->TotalDataCount = 0; |
5549 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5550 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5551 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5552 | pSMB->MaxSetupCount = 0; |
5553 | pSMB->Reserved = 0; | |
5554 | pSMB->Flags = 0; | |
5555 | pSMB->Timeout = 0; | |
5556 | pSMB->Reserved2 = 0; | |
5557 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5558 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5559 | pSMB->DataCount = 0; |
5560 | pSMB->DataOffset = 0; | |
5561 | pSMB->SetupCount = 1; | |
5562 | pSMB->Reserved3 = 0; | |
5563 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5564 | byte_count = params + 1 /* pad */ ; | |
5565 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5566 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5567 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5568 | pSMB->Reserved4 = 0; | |
5569 | pSMB->hdr.smb_buf_length += byte_count; | |
5570 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5571 | ||
5572 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5573 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5574 | if (rc) { | |
b6b38f70 | 5575 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5576 | goto QAllEAsOut; |
5577 | } | |
1da177e4 | 5578 | |
f0d3868b JL |
5579 | |
5580 | /* BB also check enough total bytes returned */ | |
5581 | /* BB we need to improve the validity checking | |
5582 | of these trans2 responses */ | |
5583 | ||
5584 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5585 | if (rc || (pSMBr->ByteCount < 4)) { | |
5586 | rc = -EIO; /* bad smb */ | |
5587 | goto QAllEAsOut; | |
5588 | } | |
5589 | ||
5590 | /* check that length of list is not more than bcc */ | |
5591 | /* check that each entry does not go beyond length | |
5592 | of list */ | |
5593 | /* check that each element of each entry does not | |
5594 | go beyond end of list */ | |
5595 | /* validate_trans2_offsets() */ | |
5596 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5597 | ||
5598 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5599 | ea_response_data = (struct fealist *) | |
5600 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5601 | ||
6e462b9f | 5602 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5603 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5604 | if (list_len <= 8) { |
b6b38f70 | 5605 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5606 | goto QAllEAsOut; |
5607 | } | |
5608 | ||
0cd126b5 | 5609 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5610 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5611 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 5612 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5613 | rc = -EIO; |
5614 | goto QAllEAsOut; | |
5615 | } | |
5616 | ||
f0d3868b | 5617 | /* account for ea list len */ |
6e462b9f | 5618 | list_len -= 4; |
f0d3868b JL |
5619 | temp_fea = ea_response_data->list; |
5620 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5621 | while (list_len > 0) { |
122ca007 | 5622 | unsigned int name_len; |
f0d3868b | 5623 | __u16 value_len; |
0cd126b5 | 5624 | |
6e462b9f | 5625 | list_len -= 4; |
f0d3868b | 5626 | temp_ptr += 4; |
0cd126b5 JL |
5627 | /* make sure we can read name_len and value_len */ |
5628 | if (list_len < 0) { | |
b6b38f70 | 5629 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5630 | rc = -EIO; |
5631 | goto QAllEAsOut; | |
5632 | } | |
5633 | ||
5634 | name_len = temp_fea->name_len; | |
5635 | value_len = le16_to_cpu(temp_fea->value_len); | |
5636 | list_len -= name_len + 1 + value_len; | |
5637 | if (list_len < 0) { | |
b6b38f70 | 5638 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5639 | rc = -EIO; |
5640 | goto QAllEAsOut; | |
5641 | } | |
5642 | ||
31c0519f JL |
5643 | if (ea_name) { |
5644 | if (strncmp(ea_name, temp_ptr, name_len) == 0) { | |
5645 | temp_ptr += name_len + 1; | |
5646 | rc = value_len; | |
5647 | if (buf_size == 0) | |
5648 | goto QAllEAsOut; | |
5649 | if ((size_t)value_len > buf_size) { | |
5650 | rc = -ERANGE; | |
5651 | goto QAllEAsOut; | |
5652 | } | |
5653 | memcpy(EAData, temp_ptr, value_len); | |
5654 | goto QAllEAsOut; | |
5655 | } | |
f0d3868b | 5656 | } else { |
31c0519f JL |
5657 | /* account for prefix user. and trailing null */ |
5658 | rc += (5 + 1 + name_len); | |
5659 | if (rc < (int) buf_size) { | |
5660 | memcpy(EAData, "user.", 5); | |
5661 | EAData += 5; | |
5662 | memcpy(EAData, temp_ptr, name_len); | |
5663 | EAData += name_len; | |
5664 | /* null terminate name */ | |
5665 | *EAData = 0; | |
5666 | ++EAData; | |
5667 | } else if (buf_size == 0) { | |
5668 | /* skip copy - calc size only */ | |
5669 | } else { | |
5670 | /* stop before overrun buffer */ | |
5671 | rc = -ERANGE; | |
5672 | break; | |
5673 | } | |
1da177e4 | 5674 | } |
0cd126b5 | 5675 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5676 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5677 | } |
f0d3868b | 5678 | |
31c0519f JL |
5679 | /* didn't find the named attribute */ |
5680 | if (ea_name) | |
5681 | rc = -ENODATA; | |
5682 | ||
f0d3868b | 5683 | QAllEAsOut: |
0d817bc0 | 5684 | cifs_buf_release(pSMB); |
1da177e4 LT |
5685 | if (rc == -EAGAIN) |
5686 | goto QAllEAsRetry; | |
5687 | ||
5688 | return (ssize_t)rc; | |
5689 | } | |
5690 | ||
1da177e4 LT |
5691 | int |
5692 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5693 | const char *ea_name, const void *ea_value, |
5694 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5695 | int remap) | |
1da177e4 LT |
5696 | { |
5697 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5698 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5699 | struct fealist *parm_data; | |
5700 | int name_len; | |
5701 | int rc = 0; | |
5702 | int bytes_returned = 0; | |
5703 | __u16 params, param_offset, byte_count, offset, count; | |
5704 | ||
b6b38f70 | 5705 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5706 | SetEARetry: |
5707 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5708 | (void **) &pSMBr); | |
5709 | if (rc) | |
5710 | return rc; | |
5711 | ||
5712 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5713 | name_len = | |
50c2f753 | 5714 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5715 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5716 | name_len++; /* trailing null */ |
5717 | name_len *= 2; | |
50c2f753 | 5718 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5719 | name_len = strnlen(fileName, PATH_MAX); |
5720 | name_len++; /* trailing null */ | |
5721 | strncpy(pSMB->FileName, fileName, name_len); | |
5722 | } | |
5723 | ||
5724 | params = 6 + name_len; | |
5725 | ||
5726 | /* done calculating parms using name_len of file name, | |
5727 | now use name_len to calculate length of ea name | |
5728 | we are going to create in the inode xattrs */ | |
790fe579 | 5729 | if (ea_name == NULL) |
1da177e4 LT |
5730 | name_len = 0; |
5731 | else | |
50c2f753 | 5732 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5733 | |
dae5dbdb | 5734 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5735 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5736 | /* BB find max SMB PDU from sess */ |
5737 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5738 | pSMB->MaxSetupCount = 0; |
5739 | pSMB->Reserved = 0; | |
5740 | pSMB->Flags = 0; | |
5741 | pSMB->Timeout = 0; | |
5742 | pSMB->Reserved2 = 0; | |
5743 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5744 | InformationLevel) - 4; |
1da177e4 LT |
5745 | offset = param_offset + params; |
5746 | pSMB->InformationLevel = | |
5747 | cpu_to_le16(SMB_SET_FILE_EA); | |
5748 | ||
5749 | parm_data = | |
5750 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5751 | offset); | |
5752 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5753 | pSMB->DataOffset = cpu_to_le16(offset); | |
5754 | pSMB->SetupCount = 1; | |
5755 | pSMB->Reserved3 = 0; | |
5756 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5757 | byte_count = 3 /* pad */ + params + count; | |
5758 | pSMB->DataCount = cpu_to_le16(count); | |
5759 | parm_data->list_len = cpu_to_le32(count); | |
5760 | parm_data->list[0].EA_flags = 0; | |
5761 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5762 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5763 | /* EA names are always ASCII */ |
790fe579 | 5764 | if (ea_name) |
50c2f753 | 5765 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5766 | parm_data->list[0].name[name_len] = 0; |
5767 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5768 | /* caller ensures that ea_value_len is less than 64K but | |
5769 | we need to ensure that it fits within the smb */ | |
5770 | ||
50c2f753 SF |
5771 | /*BB add length check to see if it would fit in |
5772 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5773 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5774 | if (ea_value_len) | |
50c2f753 SF |
5775 | memcpy(parm_data->list[0].name+name_len+1, |
5776 | ea_value, ea_value_len); | |
1da177e4 LT |
5777 | |
5778 | pSMB->TotalDataCount = pSMB->DataCount; | |
5779 | pSMB->ParameterCount = cpu_to_le16(params); | |
5780 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5781 | pSMB->Reserved4 = 0; | |
5782 | pSMB->hdr.smb_buf_length += byte_count; | |
5783 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5784 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5785 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5786 | if (rc) |
b6b38f70 | 5787 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5788 | |
5789 | cifs_buf_release(pSMB); | |
5790 | ||
5791 | if (rc == -EAGAIN) | |
5792 | goto SetEARetry; | |
5793 | ||
5794 | return rc; | |
5795 | } | |
5796 | ||
5797 | #endif |