Commit | Line | Data |
---|---|---|
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 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
aa24d1e9 PS |
89 | /* |
90 | * Mark as invalid, all open files on tree connections since they | |
91 | * were closed when session to server was lost. | |
92 | */ | |
93 | void | |
94 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 | 99 | |
aa24d1e9 | 100 | /* list all files open on tree connection and mark them invalid */ |
4477288a | 101 | spin_lock(&cifs_file_list_lock); |
aa24d1e9 | 102 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 103 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 104 | open_file->invalidHandle = true; |
3bc303c2 | 105 | open_file->oplock_break_cancelled = true; |
1da177e4 | 106 | } |
4477288a | 107 | spin_unlock(&cifs_file_list_lock); |
aa24d1e9 PS |
108 | /* |
109 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
110 | * to this tcon. | |
111 | */ | |
1da177e4 LT |
112 | } |
113 | ||
9162ab20 JL |
114 | /* reconnect the socket, tcon, and smb session if needed */ |
115 | static int | |
96daf2b0 | 116 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 117 | { |
c4a5534a | 118 | int rc; |
96daf2b0 | 119 | struct cifs_ses *ses; |
9162ab20 JL |
120 | struct TCP_Server_Info *server; |
121 | struct nls_table *nls_codepage; | |
122 | ||
123 | /* | |
124 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
125 | * tcp and smb session status done differently for those three - in the | |
126 | * calling routine | |
127 | */ | |
128 | if (!tcon) | |
129 | return 0; | |
130 | ||
131 | ses = tcon->ses; | |
132 | server = ses->server; | |
133 | ||
134 | /* | |
135 | * only tree disconnect, open, and write, (and ulogoff which does not | |
136 | * have tcon) are allowed as we start force umount | |
137 | */ | |
138 | if (tcon->tidStatus == CifsExiting) { | |
139 | if (smb_command != SMB_COM_WRITE_ANDX && | |
140 | smb_command != SMB_COM_OPEN_ANDX && | |
141 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
142 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
143 | smb_command); | |
9162ab20 JL |
144 | return -ENODEV; |
145 | } | |
146 | } | |
147 | ||
9162ab20 JL |
148 | /* |
149 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
150 | * greater than cifs socket timeout which is 7 seconds | |
151 | */ | |
152 | while (server->tcpStatus == CifsNeedReconnect) { | |
153 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 154 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 155 | |
fd88ce93 | 156 | /* are we still trying to reconnect? */ |
9162ab20 JL |
157 | if (server->tcpStatus != CifsNeedReconnect) |
158 | break; | |
159 | ||
160 | /* | |
161 | * on "soft" mounts we wait once. Hard mounts keep | |
162 | * retrying until process is killed or server comes | |
163 | * back on-line | |
164 | */ | |
d402539b | 165 | if (!tcon->retry) { |
f96637be | 166 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
167 | return -EHOSTDOWN; |
168 | } | |
169 | } | |
170 | ||
171 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
172 | return 0; | |
173 | ||
174 | nls_codepage = load_nls_default(); | |
175 | ||
176 | /* | |
177 | * need to prevent multiple threads trying to simultaneously | |
178 | * reconnect the same SMB session | |
179 | */ | |
d7b619cf | 180 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
181 | rc = cifs_negotiate_protocol(0, ses); |
182 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
183 | rc = cifs_setup_session(0, ses, nls_codepage); |
184 | ||
185 | /* do we need to reconnect tcon? */ | |
186 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
188 | goto out; |
189 | } | |
190 | ||
aa24d1e9 | 191 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 192 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 193 | mutex_unlock(&ses->session_mutex); |
f96637be | 194 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 JL |
195 | |
196 | if (rc) | |
197 | goto out; | |
198 | ||
199 | /* | |
200 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
201 | * size shrinking | |
202 | */ | |
203 | atomic_inc(&tconInfoReconnectCount); | |
204 | ||
205 | /* tell server Unix caps we support */ | |
206 | if (ses->capabilities & CAP_UNIX) | |
207 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
208 | ||
209 | /* | |
210 | * Removed call to reopen open files here. It is safer (and faster) to | |
211 | * reopen files one at a time as needed in read and write. | |
212 | * | |
213 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
214 | */ | |
215 | ||
216 | out: | |
217 | /* | |
218 | * Check if handle based operation so we know whether we can continue | |
219 | * or not without returning to caller to reset file handle | |
220 | */ | |
221 | switch (smb_command) { | |
222 | case SMB_COM_READ_ANDX: | |
223 | case SMB_COM_WRITE_ANDX: | |
224 | case SMB_COM_CLOSE: | |
225 | case SMB_COM_FIND_CLOSE2: | |
226 | case SMB_COM_LOCKING_ANDX: | |
227 | rc = -EAGAIN; | |
228 | } | |
229 | ||
230 | unload_nls(nls_codepage); | |
231 | return rc; | |
232 | } | |
233 | ||
ad7a2926 SF |
234 | /* Allocate and return pointer to an SMB request buffer, and set basic |
235 | SMB information in the SMB header. If the return code is zero, this | |
236 | function must have filled in request_buf pointer */ | |
1da177e4 | 237 | static int |
96daf2b0 | 238 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 239 | void **request_buf) |
1da177e4 | 240 | { |
f569599a | 241 | int rc; |
1da177e4 | 242 | |
9162ab20 | 243 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 244 | if (rc) |
1da177e4 LT |
245 | return rc; |
246 | ||
247 | *request_buf = cifs_small_buf_get(); | |
248 | if (*request_buf == NULL) { | |
249 | /* BB should we add a retry in here if not a writepage? */ | |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
63135e08 | 253 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 254 | tcon, wct); |
1da177e4 | 255 | |
790fe579 SF |
256 | if (tcon != NULL) |
257 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 258 | |
f569599a | 259 | return 0; |
5815449d SF |
260 | } |
261 | ||
12b3b8ff | 262 | int |
50c2f753 | 263 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 264 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
265 | { |
266 | int rc; | |
50c2f753 | 267 | struct smb_hdr *buffer; |
12b3b8ff | 268 | |
5815449d | 269 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 270 | if (rc) |
12b3b8ff SF |
271 | return rc; |
272 | ||
04fdabe1 | 273 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 274 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
275 | if (ses->capabilities & CAP_UNICODE) |
276 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 277 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
278 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
279 | ||
280 | /* uid, tid can stay at zero as set in header assemble */ | |
281 | ||
50c2f753 | 282 | /* BB add support for turning on the signing when |
12b3b8ff SF |
283 | this function is used after 1st of session setup requests */ |
284 | ||
285 | return rc; | |
286 | } | |
1da177e4 LT |
287 | |
288 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
289 | static int | |
96daf2b0 | 290 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 291 | void **request_buf, void **response_buf) |
1da177e4 | 292 | { |
1da177e4 LT |
293 | *request_buf = cifs_buf_get(); |
294 | if (*request_buf == NULL) { | |
295 | /* BB should we add a retry in here if not a writepage? */ | |
296 | return -ENOMEM; | |
297 | } | |
298 | /* Although the original thought was we needed the response buf for */ | |
299 | /* potential retries of smb operations it turns out we can determine */ | |
300 | /* from the mid flags when the request buffer can be resent without */ | |
301 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 302 | if (response_buf) |
50c2f753 | 303 | *response_buf = *request_buf; |
1da177e4 LT |
304 | |
305 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 306 | wct); |
1da177e4 | 307 | |
790fe579 SF |
308 | if (tcon != NULL) |
309 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 310 | |
f569599a JL |
311 | return 0; |
312 | } | |
313 | ||
314 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
315 | static int | |
96daf2b0 | 316 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
317 | void **request_buf, void **response_buf) |
318 | { | |
319 | int rc; | |
320 | ||
321 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
322 | if (rc) | |
323 | return rc; | |
324 | ||
325 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
326 | } | |
327 | ||
328 | static int | |
96daf2b0 | 329 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
330 | void **request_buf, void **response_buf) |
331 | { | |
332 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
333 | return -EHOSTDOWN; | |
334 | ||
335 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
336 | } |
337 | ||
50c2f753 | 338 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 339 | { |
12df83c9 JL |
340 | unsigned int total_size; |
341 | ||
342 | /* check for plausible wct */ | |
343 | if (pSMB->hdr.WordCount < 10) | |
344 | goto vt2_err; | |
1da177e4 | 345 | |
1da177e4 | 346 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
347 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
348 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
349 | goto vt2_err; | |
350 | ||
12df83c9 JL |
351 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
352 | if (total_size >= 512) | |
353 | goto vt2_err; | |
354 | ||
fd5707e1 JL |
355 | /* check that bcc is at least as big as parms + data, and that it is |
356 | * less than negotiated smb buffer | |
357 | */ | |
12df83c9 JL |
358 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
359 | if (total_size > get_bcc(&pSMB->hdr) || | |
360 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
361 | goto vt2_err; | |
362 | ||
363 | return 0; | |
364 | vt2_err: | |
50c2f753 | 365 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 366 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 367 | return -EINVAL; |
1da177e4 | 368 | } |
690c522f | 369 | |
31d9e2bd JL |
370 | static int |
371 | decode_ext_sec_blob(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) | |
372 | { | |
373 | int rc = 0; | |
374 | u16 count; | |
375 | char *guid = pSMBr->u.extended_response.GUID; | |
376 | ||
377 | count = get_bcc(&pSMBr->hdr); | |
378 | if (count < SMB1_CLIENT_GUID_SIZE) | |
379 | return -EIO; | |
380 | ||
381 | spin_lock(&cifs_tcp_ses_lock); | |
382 | if (server->srv_count > 1) { | |
383 | spin_unlock(&cifs_tcp_ses_lock); | |
384 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
385 | cifs_dbg(FYI, "server UID changed\n"); | |
386 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
387 | } | |
388 | } else { | |
389 | spin_unlock(&cifs_tcp_ses_lock); | |
390 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
391 | } | |
392 | ||
393 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
394 | server->secType = RawNTLMSSP; | |
395 | } else { | |
396 | count -= SMB1_CLIENT_GUID_SIZE; | |
397 | rc = decode_negTokenInit( | |
398 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
399 | if (rc != 1) | |
400 | return -EINVAL; | |
401 | ||
402 | /* Make sure server supports what we want to use */ | |
403 | switch(server->secType) { | |
404 | case Kerberos: | |
405 | if (!server->sec_kerberos && !server->sec_mskerberos) | |
406 | return -EOPNOTSUPP; | |
407 | break; | |
408 | case RawNTLMSSP: | |
409 | if (!server->sec_ntlmssp) | |
410 | return -EOPNOTSUPP; | |
411 | break; | |
412 | default: | |
413 | return -EOPNOTSUPP; | |
414 | } | |
415 | } | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
9ddec561 JL |
420 | int |
421 | cifs_enable_signing(struct TCP_Server_Info *server, unsigned int secFlags) | |
422 | { | |
423 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { | |
424 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
425 | so if this is zero it means that signing is disabled */ | |
426 | cifs_dbg(FYI, "Signing disabled\n"); | |
427 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { | |
428 | cifs_dbg(VFS, "Server requires packet signing to be enabled in /proc/fs/cifs/SecurityFlags\n"); | |
429 | return -EOPNOTSUPP; | |
430 | } | |
431 | server->sec_mode &= | |
432 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); | |
433 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { | |
434 | /* signing required */ | |
435 | cifs_dbg(FYI, "Must sign - secFlags 0x%x\n", secFlags); | |
436 | if ((server->sec_mode & | |
437 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
438 | cifs_dbg(VFS, "signing required but server lacks support\n"); | |
439 | return -EOPNOTSUPP; | |
440 | } else | |
441 | server->sec_mode |= SECMODE_SIGN_REQUIRED; | |
442 | } else { | |
443 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
444 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) | |
445 | server->sec_mode &= | |
446 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); | |
447 | } | |
448 | ||
449 | return 0; | |
450 | } | |
451 | ||
2190eca1 JL |
452 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
453 | static int | |
454 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr, | |
455 | unsigned int secFlags) | |
456 | { | |
457 | __s16 tmp; | |
458 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
459 | ||
460 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
461 | return -EOPNOTSUPP; | |
462 | ||
463 | if ((secFlags & CIFSSEC_MAY_LANMAN) || (secFlags & CIFSSEC_MAY_PLNTXT)) | |
464 | server->secType = LANMAN; | |
465 | else { | |
466 | cifs_dbg(VFS, "mount failed weak security disabled in /proc/fs/cifs/SecurityFlags\n"); | |
467 | return -EOPNOTSUPP; | |
468 | } | |
469 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); | |
470 | server->maxReq = min_t(unsigned int, | |
471 | le16_to_cpu(rsp->MaxMpxCount), | |
472 | cifs_max_pending); | |
473 | set_credits(server, server->maxReq); | |
474 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
475 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); | |
476 | /* even though we do not use raw we might as well set this | |
477 | accurately, in case we ever find a need for it */ | |
478 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
479 | server->max_rw = 0xFF00; | |
480 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
481 | } else { | |
482 | server->max_rw = 0;/* do not need to use raw anyway */ | |
483 | server->capabilities = CAP_MPX_MODE; | |
484 | } | |
485 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
486 | if (tmp == -1) { | |
487 | /* OS/2 often does not set timezone therefore | |
488 | * we must use server time to calc time zone. | |
489 | * Could deviate slightly from the right zone. | |
490 | * Smallest defined timezone difference is 15 minutes | |
491 | * (i.e. Nepal). Rounding up/down is done to match | |
492 | * this requirement. | |
493 | */ | |
494 | int val, seconds, remain, result; | |
495 | struct timespec ts, utc; | |
496 | utc = CURRENT_TIME; | |
497 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, | |
498 | rsp->SrvTime.Time, 0); | |
499 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
500 | (int)ts.tv_sec, (int)utc.tv_sec, | |
501 | (int)(utc.tv_sec - ts.tv_sec)); | |
502 | val = (int)(utc.tv_sec - ts.tv_sec); | |
503 | seconds = abs(val); | |
504 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
505 | remain = seconds % MIN_TZ_ADJ; | |
506 | if (remain >= (MIN_TZ_ADJ / 2)) | |
507 | result += MIN_TZ_ADJ; | |
508 | if (val < 0) | |
509 | result = -result; | |
510 | server->timeAdj = result; | |
511 | } else { | |
512 | server->timeAdj = (int)tmp; | |
513 | server->timeAdj *= 60; /* also in seconds */ | |
514 | } | |
515 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
516 | ||
517 | ||
518 | /* BB get server time for time conversions and add | |
519 | code to use it and timezone since this is not UTC */ | |
520 | ||
521 | if (rsp->EncryptionKeyLength == | |
522 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
523 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
524 | CIFS_CRYPTO_KEY_SIZE); | |
525 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
526 | return -EIO; /* need cryptkey unless plain text */ | |
527 | } | |
528 | ||
529 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
530 | return 0; | |
531 | } | |
532 | #else | |
533 | static inline int | |
534 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr, | |
535 | unsigned int secFlags) | |
536 | { | |
537 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
538 | return -EOPNOTSUPP; | |
539 | } | |
540 | #endif | |
541 | ||
9193400b JL |
542 | static bool |
543 | should_set_ext_sec_flag(unsigned int secFlags) | |
544 | { | |
545 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) | |
546 | return true; | |
547 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) | |
548 | return true; | |
549 | else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) | |
550 | return true; | |
551 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) | |
552 | return true; | |
553 | return false; | |
554 | } | |
555 | ||
1da177e4 | 556 | int |
286170aa | 557 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
558 | { |
559 | NEGOTIATE_REQ *pSMB; | |
560 | NEGOTIATE_RSP *pSMBr; | |
561 | int rc = 0; | |
562 | int bytes_returned; | |
3979877e | 563 | int i; |
3534b850 | 564 | struct TCP_Server_Info *server = ses->server; |
1da177e4 | 565 | u16 count; |
750d1151 | 566 | unsigned int secFlags; |
1da177e4 | 567 | |
3534b850 JL |
568 | if (!server) { |
569 | WARN(1, "%s: server is NULL!\n", __func__); | |
570 | return -EIO; | |
1da177e4 | 571 | } |
3534b850 | 572 | |
1da177e4 LT |
573 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
574 | (void **) &pSMB, (void **) &pSMBr); | |
575 | if (rc) | |
576 | return rc; | |
750d1151 SF |
577 | |
578 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 579 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 580 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 581 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 582 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 583 | |
f96637be | 584 | cifs_dbg(FYI, "secFlags 0x%x\n", secFlags); |
f40c5628 | 585 | |
88257360 | 586 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 587 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 588 | |
9193400b JL |
589 | if (should_set_ext_sec_flag(secFlags)) { |
590 | cifs_dbg(FYI, "Requesting extended security."); | |
ac683924 SF |
591 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
592 | } | |
50c2f753 | 593 | |
3979877e | 594 | count = 0; |
50c2f753 | 595 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
596 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
597 | count += strlen(protocols[i].name) + 1; | |
598 | /* null at end of source and target buffers anyway */ | |
599 | } | |
be8e3b00 | 600 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
601 | pSMB->ByteCount = cpu_to_le16(count); |
602 | ||
603 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
604 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 605 | if (rc != 0) |
254e55ed SF |
606 | goto neg_err_exit; |
607 | ||
9bf67e51 | 608 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 609 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 610 | /* Check wct = 1 error case */ |
9bf67e51 | 611 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 612 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 613 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
614 | could not negotiate a common dialect */ |
615 | rc = -EOPNOTSUPP; | |
616 | goto neg_err_exit; | |
790fe579 | 617 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 618 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
2190eca1 | 619 | rc = decode_lanman_negprot_rsp(server, pSMBr, secFlags); |
9ddec561 | 620 | goto signing_check; |
790fe579 | 621 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
622 | /* unknown wct */ |
623 | rc = -EOPNOTSUPP; | |
624 | goto neg_err_exit; | |
625 | } | |
2190eca1 JL |
626 | /* else wct == 17, NTLM or better */ |
627 | ||
96daf2b0 SF |
628 | server->sec_mode = pSMBr->SecurityMode; |
629 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 630 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 631 | |
96daf2b0 | 632 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 633 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 634 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 635 | #endif /* CIFS_WEAK_PW_HASH */ |
f96637be | 636 | cifs_dbg(VFS, "Server requests plain text password but client support disabled\n"); |
9312f675 | 637 | |
790fe579 | 638 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 639 | server->secType = NTLMv2; |
790fe579 | 640 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 641 | server->secType = NTLM; |
790fe579 | 642 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 643 | server->secType = NTLMv2; |
a013689d SF |
644 | else if (secFlags & CIFSSEC_MAY_KRB5) |
645 | server->secType = Kerberos; | |
ac683924 | 646 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 647 | server->secType = RawNTLMSSP; |
a013689d SF |
648 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
649 | server->secType = LANMAN; | |
a013689d SF |
650 | else { |
651 | rc = -EOPNOTSUPP; | |
f96637be | 652 | cifs_dbg(VFS, "Invalid security type\n"); |
a013689d SF |
653 | goto neg_err_exit; |
654 | } | |
655 | /* else ... any others ...? */ | |
254e55ed SF |
656 | |
657 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
658 | little endian */ | |
10b9b98e PS |
659 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
660 | cifs_max_pending); | |
45275789 | 661 | set_credits(server, server->maxReq); |
254e55ed | 662 | /* probably no need to store and check maxvcs */ |
c974befa | 663 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 664 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 665 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 666 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
667 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
668 | server->timeAdj *= 60; | |
31d9e2bd | 669 | |
e598d1d8 JL |
670 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
671 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 672 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 673 | CIFS_CRYPTO_KEY_SIZE); |
e598d1d8 | 674 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
07cc6cf9 | 675 | server->capabilities & CAP_EXTENDED_SECURITY) && |
e598d1d8 JL |
676 | (pSMBr->EncryptionKeyLength == 0)) { |
677 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; | |
31d9e2bd | 678 | rc = decode_ext_sec_blob(server, pSMBr); |
e598d1d8 | 679 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 680 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
681 | } else { |
682 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 683 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 684 | } |
254e55ed SF |
685 | |
686 | signing_check: | |
9ddec561 JL |
687 | if (!rc) |
688 | rc = cifs_enable_signing(server, secFlags); | |
50c2f753 | 689 | neg_err_exit: |
4a6d87f1 | 690 | cifs_buf_release(pSMB); |
254e55ed | 691 | |
f96637be | 692 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
693 | return rc; |
694 | } | |
695 | ||
696 | int | |
2e6e02ab | 697 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
698 | { |
699 | struct smb_hdr *smb_buffer; | |
1da177e4 | 700 | int rc = 0; |
1da177e4 | 701 | |
f96637be | 702 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 703 | |
f1987b44 JL |
704 | /* BB: do we need to check this? These should never be NULL. */ |
705 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
706 | return -EIO; | |
1da177e4 | 707 | |
f1987b44 JL |
708 | /* |
709 | * No need to return error on this operation if tid invalidated and | |
710 | * closed on server already e.g. due to tcp session crashing. Also, | |
711 | * the tcon is no longer on the list, so no need to take lock before | |
712 | * checking this. | |
713 | */ | |
268875b9 | 714 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 715 | return 0; |
1da177e4 | 716 | |
50c2f753 | 717 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 718 | (void **)&smb_buffer); |
f1987b44 | 719 | if (rc) |
1da177e4 | 720 | return rc; |
133672ef | 721 | |
792af7b0 | 722 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 723 | if (rc) |
f96637be | 724 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 725 | |
50c2f753 | 726 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 727 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
728 | if (rc == -EAGAIN) |
729 | rc = 0; | |
730 | ||
731 | return rc; | |
732 | } | |
733 | ||
766fdbb5 JL |
734 | /* |
735 | * This is a no-op for now. We're not really interested in the reply, but | |
736 | * rather in the fact that the server sent one and that server->lstrp | |
737 | * gets updated. | |
738 | * | |
739 | * FIXME: maybe we should consider checking that the reply matches request? | |
740 | */ | |
741 | static void | |
742 | cifs_echo_callback(struct mid_q_entry *mid) | |
743 | { | |
744 | struct TCP_Server_Info *server = mid->callback_data; | |
745 | ||
746 | DeleteMidQEntry(mid); | |
a891f0f8 | 747 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
748 | } |
749 | ||
750 | int | |
751 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
752 | { | |
753 | ECHO_REQ *smb; | |
754 | int rc = 0; | |
fcc31cb6 | 755 | struct kvec iov; |
fec344e3 JL |
756 | struct smb_rqst rqst = { .rq_iov = &iov, |
757 | .rq_nvec = 1 }; | |
766fdbb5 | 758 | |
f96637be | 759 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
760 | |
761 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
762 | if (rc) | |
763 | return rc; | |
764 | ||
765 | /* set up echo request */ | |
5443d130 | 766 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
767 | smb->hdr.WordCount = 1; |
768 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 769 | put_bcc(1, &smb->hdr); |
766fdbb5 | 770 | smb->Data[0] = 'a'; |
be8e3b00 | 771 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
772 | iov.iov_base = smb; |
773 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 774 | |
fec344e3 | 775 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f8 | 776 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 777 | if (rc) |
f96637be | 778 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
779 | |
780 | cifs_small_buf_release(smb); | |
781 | ||
782 | return rc; | |
783 | } | |
784 | ||
1da177e4 | 785 | int |
58c45c58 | 786 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 787 | { |
1da177e4 LT |
788 | LOGOFF_ANDX_REQ *pSMB; |
789 | int rc = 0; | |
1da177e4 | 790 | |
f96637be | 791 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 792 | |
14fbf50d JL |
793 | /* |
794 | * BB: do we need to check validity of ses and server? They should | |
795 | * always be valid since we have an active reference. If not, that | |
796 | * should probably be a BUG() | |
797 | */ | |
798 | if (!ses || !ses->server) | |
3b795210 SF |
799 | return -EIO; |
800 | ||
d7b619cf | 801 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
802 | if (ses->need_reconnect) |
803 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
804 | already closed due to reconnect */ | |
1da177e4 LT |
805 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
806 | if (rc) { | |
d7b619cf | 807 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
808 | return rc; |
809 | } | |
810 | ||
88257360 | 811 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 812 | |
96daf2b0 | 813 | if (ses->server->sec_mode & |
1da177e4 LT |
814 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
815 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
816 | |
817 | pSMB->hdr.Uid = ses->Suid; | |
818 | ||
819 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 820 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 821 | session_already_dead: |
d7b619cf | 822 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
823 | |
824 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 825 | since server closed smb session, no sense reporting |
1da177e4 LT |
826 | error */ |
827 | if (rc == -EAGAIN) | |
828 | rc = 0; | |
829 | return rc; | |
830 | } | |
831 | ||
2d785a50 | 832 | int |
6d5786a3 PS |
833 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
834 | const char *fileName, __u16 type, | |
835 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
836 | { |
837 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
838 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
839 | struct unlink_psx_rq *pRqD; | |
840 | int name_len; | |
841 | int rc = 0; | |
842 | int bytes_returned = 0; | |
843 | __u16 params, param_offset, offset, byte_count; | |
844 | ||
f96637be | 845 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
846 | PsxDelete: |
847 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
848 | (void **) &pSMBr); | |
849 | if (rc) | |
850 | return rc; | |
851 | ||
852 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
853 | name_len = | |
acbbb76a SF |
854 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
855 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
856 | name_len++; /* trailing null */ |
857 | name_len *= 2; | |
858 | } else { /* BB add path length overrun check */ | |
859 | name_len = strnlen(fileName, PATH_MAX); | |
860 | name_len++; /* trailing null */ | |
861 | strncpy(pSMB->FileName, fileName, name_len); | |
862 | } | |
863 | ||
864 | params = 6 + name_len; | |
865 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
866 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
867 | pSMB->MaxSetupCount = 0; | |
868 | pSMB->Reserved = 0; | |
869 | pSMB->Flags = 0; | |
870 | pSMB->Timeout = 0; | |
871 | pSMB->Reserved2 = 0; | |
872 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
873 | InformationLevel) - 4; | |
874 | offset = param_offset + params; | |
875 | ||
876 | /* Setup pointer to Request Data (inode type) */ | |
877 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
878 | pRqD->type = cpu_to_le16(type); | |
879 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
880 | pSMB->DataOffset = cpu_to_le16(offset); | |
881 | pSMB->SetupCount = 1; | |
882 | pSMB->Reserved3 = 0; | |
883 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
884 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
885 | ||
886 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
887 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
888 | pSMB->ParameterCount = cpu_to_le16(params); | |
889 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
890 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
891 | pSMB->Reserved4 = 0; | |
be8e3b00 | 892 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
893 | pSMB->ByteCount = cpu_to_le16(byte_count); |
894 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
895 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 896 | if (rc) |
f96637be | 897 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
898 | cifs_buf_release(pSMB); |
899 | ||
44c58186 | 900 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
901 | |
902 | if (rc == -EAGAIN) | |
903 | goto PsxDelete; | |
904 | ||
905 | return rc; | |
906 | } | |
907 | ||
1da177e4 | 908 | int |
ed6875e0 PS |
909 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
910 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
911 | { |
912 | DELETE_FILE_REQ *pSMB = NULL; | |
913 | DELETE_FILE_RSP *pSMBr = NULL; | |
914 | int rc = 0; | |
915 | int bytes_returned; | |
916 | int name_len; | |
ed6875e0 | 917 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 LT |
918 | |
919 | DelFileRetry: | |
920 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
921 | (void **) &pSMBr); | |
922 | if (rc) | |
923 | return rc; | |
924 | ||
925 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
926 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
927 | PATH_MAX, cifs_sb->local_nls, | |
928 | remap); | |
1da177e4 LT |
929 | name_len++; /* trailing null */ |
930 | name_len *= 2; | |
09d1db5c | 931 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 932 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 933 | name_len++; /* trailing null */ |
ed6875e0 | 934 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
935 | } |
936 | pSMB->SearchAttributes = | |
937 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
938 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 939 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
940 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
941 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
942 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 943 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 944 | if (rc) |
f96637be | 945 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
946 | |
947 | cifs_buf_release(pSMB); | |
948 | if (rc == -EAGAIN) | |
949 | goto DelFileRetry; | |
950 | ||
951 | return rc; | |
952 | } | |
953 | ||
954 | int | |
f958ca5d PS |
955 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
956 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
957 | { |
958 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
959 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
960 | int rc = 0; | |
961 | int bytes_returned; | |
962 | int name_len; | |
f958ca5d | 963 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 964 | |
f96637be | 965 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
966 | RmDirRetry: |
967 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
968 | (void **) &pSMBr); | |
969 | if (rc) | |
970 | return rc; | |
971 | ||
972 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
973 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
974 | PATH_MAX, cifs_sb->local_nls, | |
975 | remap); | |
1da177e4 LT |
976 | name_len++; /* trailing null */ |
977 | name_len *= 2; | |
09d1db5c | 978 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 979 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 980 | name_len++; /* trailing null */ |
f958ca5d | 981 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
982 | } |
983 | ||
984 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 985 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
986 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
987 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
988 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 989 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 990 | if (rc) |
f96637be | 991 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
992 | |
993 | cifs_buf_release(pSMB); | |
994 | if (rc == -EAGAIN) | |
995 | goto RmDirRetry; | |
996 | return rc; | |
997 | } | |
998 | ||
999 | int | |
f436720e PS |
1000 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
1001 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
1002 | { |
1003 | int rc = 0; | |
1004 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
1005 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
1006 | int bytes_returned; | |
1007 | int name_len; | |
f436720e | 1008 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 1009 | |
f96637be | 1010 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
1011 | MkDirRetry: |
1012 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1013 | (void **) &pSMBr); | |
1014 | if (rc) | |
1015 | return rc; | |
1016 | ||
1017 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 1018 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
1019 | PATH_MAX, cifs_sb->local_nls, |
1020 | remap); | |
1da177e4 LT |
1021 | name_len++; /* trailing null */ |
1022 | name_len *= 2; | |
09d1db5c | 1023 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1024 | name_len = strnlen(name, PATH_MAX); |
1025 | name_len++; /* trailing null */ | |
1026 | strncpy(pSMB->DirName, name, name_len); | |
1027 | } | |
1028 | ||
1029 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1030 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1031 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1032 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1033 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1034 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1035 | if (rc) |
f96637be | 1036 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 1037 | |
1da177e4 LT |
1038 | cifs_buf_release(pSMB); |
1039 | if (rc == -EAGAIN) | |
1040 | goto MkDirRetry; | |
1041 | return rc; | |
1042 | } | |
1043 | ||
2dd29d31 | 1044 | int |
6d5786a3 PS |
1045 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1046 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1047 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1048 | const char *name, const struct nls_table *nls_codepage, | |
1049 | int remap) | |
2dd29d31 SF |
1050 | { |
1051 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1052 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1053 | int name_len; | |
1054 | int rc = 0; | |
1055 | int bytes_returned = 0; | |
2dd29d31 | 1056 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1057 | OPEN_PSX_REQ *pdata; |
1058 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1059 | |
f96637be | 1060 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1061 | PsxCreat: |
1062 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1063 | (void **) &pSMBr); | |
1064 | if (rc) | |
1065 | return rc; | |
1066 | ||
1067 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1068 | name_len = | |
acbbb76a SF |
1069 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1070 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1071 | name_len++; /* trailing null */ |
1072 | name_len *= 2; | |
1073 | } else { /* BB improve the check for buffer overruns BB */ | |
1074 | name_len = strnlen(name, PATH_MAX); | |
1075 | name_len++; /* trailing null */ | |
1076 | strncpy(pSMB->FileName, name, name_len); | |
1077 | } | |
1078 | ||
1079 | params = 6 + name_len; | |
1080 | count = sizeof(OPEN_PSX_REQ); | |
1081 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1082 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1083 | pSMB->MaxSetupCount = 0; | |
1084 | pSMB->Reserved = 0; | |
1085 | pSMB->Flags = 0; | |
1086 | pSMB->Timeout = 0; | |
1087 | pSMB->Reserved2 = 0; | |
1088 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1089 | InformationLevel) - 4; |
2dd29d31 | 1090 | offset = param_offset + params; |
2dd29d31 | 1091 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1092 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1093 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1094 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1095 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1096 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1097 | pSMB->DataOffset = cpu_to_le16(offset); | |
1098 | pSMB->SetupCount = 1; | |
1099 | pSMB->Reserved3 = 0; | |
1100 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1101 | byte_count = 3 /* pad */ + params + count; | |
1102 | ||
1103 | pSMB->DataCount = cpu_to_le16(count); | |
1104 | pSMB->ParameterCount = cpu_to_le16(params); | |
1105 | pSMB->TotalDataCount = pSMB->DataCount; | |
1106 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1107 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1108 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1109 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1110 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1111 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1112 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1113 | if (rc) { | |
f96637be | 1114 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1115 | goto psx_create_err; |
1116 | } | |
1117 | ||
f96637be | 1118 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1119 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1120 | ||
820a803f | 1121 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1122 | rc = -EIO; /* bad smb */ |
1123 | goto psx_create_err; | |
1124 | } | |
1125 | ||
1126 | /* copy return information to pRetData */ | |
50c2f753 | 1127 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1128 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1129 | |
2dd29d31 | 1130 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1131 | if (netfid) |
2dd29d31 SF |
1132 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1133 | /* Let caller know file was created so we can set the mode. */ | |
1134 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1135 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1136 | *pOplock |= CIFS_CREATE_ACTION; |
1137 | /* check to make sure response data is there */ | |
8f2376ad CG |
1138 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1139 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1140 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1141 | } else { |
820a803f | 1142 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1143 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1144 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1145 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1146 | goto psx_create_err; |
1147 | } | |
50c2f753 | 1148 | memcpy((char *) pRetData, |
cbac3cba | 1149 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1150 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1151 | } |
2dd29d31 SF |
1152 | |
1153 | psx_create_err: | |
1154 | cifs_buf_release(pSMB); | |
1155 | ||
65bc98b0 | 1156 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1157 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1158 | else |
44c58186 | 1159 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1160 | |
1161 | if (rc == -EAGAIN) | |
1162 | goto PsxCreat; | |
1163 | ||
50c2f753 | 1164 | return rc; |
2dd29d31 SF |
1165 | } |
1166 | ||
a9d02ad4 SF |
1167 | static __u16 convert_disposition(int disposition) |
1168 | { | |
1169 | __u16 ofun = 0; | |
1170 | ||
1171 | switch (disposition) { | |
1172 | case FILE_SUPERSEDE: | |
1173 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1174 | break; | |
1175 | case FILE_OPEN: | |
1176 | ofun = SMBOPEN_OAPPEND; | |
1177 | break; | |
1178 | case FILE_CREATE: | |
1179 | ofun = SMBOPEN_OCREATE; | |
1180 | break; | |
1181 | case FILE_OPEN_IF: | |
1182 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1183 | break; | |
1184 | case FILE_OVERWRITE: | |
1185 | ofun = SMBOPEN_OTRUNC; | |
1186 | break; | |
1187 | case FILE_OVERWRITE_IF: | |
1188 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1189 | break; | |
1190 | default: | |
f96637be | 1191 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1192 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1193 | } | |
1194 | return ofun; | |
1195 | } | |
1196 | ||
35fc37d5 JL |
1197 | static int |
1198 | access_flags_to_smbopen_mode(const int access_flags) | |
1199 | { | |
1200 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1201 | ||
1202 | if (masked_flags == GENERIC_READ) | |
1203 | return SMBOPEN_READ; | |
1204 | else if (masked_flags == GENERIC_WRITE) | |
1205 | return SMBOPEN_WRITE; | |
1206 | ||
1207 | /* just go for read/write */ | |
1208 | return SMBOPEN_READWRITE; | |
1209 | } | |
1210 | ||
a9d02ad4 | 1211 | int |
6d5786a3 | 1212 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1213 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1214 | const int access_flags, const int create_options, __u16 *netfid, |
1215 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1216 | const struct nls_table *nls_codepage, int remap) |
1217 | { | |
1218 | int rc = -EACCES; | |
1219 | OPENX_REQ *pSMB = NULL; | |
1220 | OPENX_RSP *pSMBr = NULL; | |
1221 | int bytes_returned; | |
1222 | int name_len; | |
1223 | __u16 count; | |
1224 | ||
1225 | OldOpenRetry: | |
1226 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1227 | (void **) &pSMBr); | |
1228 | if (rc) | |
1229 | return rc; | |
1230 | ||
1231 | pSMB->AndXCommand = 0xFF; /* none */ | |
1232 | ||
1233 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1234 | count = 1; /* account for one byte pad to word boundary */ | |
1235 | name_len = | |
acbbb76a SF |
1236 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1237 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1238 | name_len++; /* trailing null */ |
1239 | name_len *= 2; | |
1240 | } else { /* BB improve check for buffer overruns BB */ | |
1241 | count = 0; /* no pad */ | |
1242 | name_len = strnlen(fileName, PATH_MAX); | |
1243 | name_len++; /* trailing null */ | |
1244 | strncpy(pSMB->fileName, fileName, name_len); | |
1245 | } | |
1246 | if (*pOplock & REQ_OPLOCK) | |
1247 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1248 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1249 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1250 | |
a9d02ad4 | 1251 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1252 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1253 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1254 | /* set file as system file if special file such | |
1255 | as fifo and server expecting SFU style and | |
1256 | no Unix extensions */ | |
1257 | ||
790fe579 SF |
1258 | if (create_options & CREATE_OPTION_SPECIAL) |
1259 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1260 | else /* BB FIXME BB */ |
1261 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1262 | |
67750fb9 JL |
1263 | if (create_options & CREATE_OPTION_READONLY) |
1264 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1265 | |
1266 | /* BB FIXME BB */ | |
50c2f753 SF |
1267 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1268 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1269 | /* BB FIXME END BB */ |
3e87d803 SF |
1270 | |
1271 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1272 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1273 | count += name_len; |
be8e3b00 | 1274 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1275 | |
1276 | pSMB->ByteCount = cpu_to_le16(count); | |
1277 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1278 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1279 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1280 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1281 | if (rc) { |
f96637be | 1282 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1283 | } else { |
1284 | /* BB verify if wct == 15 */ | |
1285 | ||
582d21e5 | 1286 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1287 | |
1288 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1289 | /* Let caller know file was created so we can set the mode. */ | |
1290 | /* Do we care about the CreateAction in any other cases? */ | |
1291 | /* BB FIXME BB */ | |
790fe579 | 1292 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1293 | *pOplock |= CIFS_CREATE_ACTION; */ |
1294 | /* BB FIXME END */ | |
1295 | ||
790fe579 | 1296 | if (pfile_info) { |
a9d02ad4 SF |
1297 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1298 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1299 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1300 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1301 | pfile_info->Attributes = |
50c2f753 | 1302 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1303 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1304 | pfile_info->AllocationSize = |
1305 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1306 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1307 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1308 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1309 | } |
1310 | } | |
1311 | ||
1312 | cifs_buf_release(pSMB); | |
1313 | if (rc == -EAGAIN) | |
1314 | goto OldOpenRetry; | |
1315 | return rc; | |
1316 | } | |
1317 | ||
1da177e4 | 1318 | int |
6d5786a3 | 1319 | CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 1320 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1321 | const int access_flags, const int create_options, __u16 *netfid, |
1322 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1323 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1324 | { |
1325 | int rc = -EACCES; | |
1326 | OPEN_REQ *pSMB = NULL; | |
1327 | OPEN_RSP *pSMBr = NULL; | |
1328 | int bytes_returned; | |
1329 | int name_len; | |
1330 | __u16 count; | |
1331 | ||
1332 | openRetry: | |
1333 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1334 | (void **) &pSMBr); | |
1335 | if (rc) | |
1336 | return rc; | |
1337 | ||
1338 | pSMB->AndXCommand = 0xFF; /* none */ | |
1339 | ||
1340 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1341 | count = 1; /* account for one byte pad to word boundary */ | |
1342 | name_len = | |
acbbb76a SF |
1343 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1344 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1345 | name_len++; /* trailing null */ |
1346 | name_len *= 2; | |
1347 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1348 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1349 | count = 0; /* no pad */ |
1350 | name_len = strnlen(fileName, PATH_MAX); | |
1351 | name_len++; /* trailing null */ | |
1352 | pSMB->NameLength = cpu_to_le16(name_len); | |
1353 | strncpy(pSMB->fileName, fileName, name_len); | |
1354 | } | |
1355 | if (*pOplock & REQ_OPLOCK) | |
1356 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1357 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1358 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1359 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1360 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1361 | /* set file as system file if special file such |
1362 | as fifo and server expecting SFU style and | |
1363 | no Unix extensions */ | |
790fe579 | 1364 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1365 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1366 | else | |
1367 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1368 | |
1da177e4 LT |
1369 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1370 | /* but it helps speed up case sensitive checks for other | |
1371 | servers such as Samba */ | |
1372 | if (tcon->ses->capabilities & CAP_UNIX) | |
1373 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1374 | ||
67750fb9 JL |
1375 | if (create_options & CREATE_OPTION_READONLY) |
1376 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1377 | ||
1da177e4 LT |
1378 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1379 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1380 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1381 | /* BB Expirement with various impersonation levels and verify */ |
1382 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1383 | pSMB->SecurityFlags = |
1384 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1385 | ||
1386 | count += name_len; | |
be8e3b00 | 1387 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1388 | |
1389 | pSMB->ByteCount = cpu_to_le16(count); | |
1390 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1391 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1392 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1393 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1394 | if (rc) { |
f96637be | 1395 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
1da177e4 | 1396 | } else { |
09d1db5c | 1397 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1398 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1399 | /* Let caller know file was created so we can set the mode. */ | |
1400 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1401 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1402 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1403 | if (pfile_info) { |
61e74801 SF |
1404 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1405 | 36 /* CreationTime to Attributes */); | |
1406 | /* the file_info buf is endian converted by caller */ | |
1407 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1408 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1409 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1410 | pfile_info->DeletePending = 0; | |
1da177e4 | 1411 | } |
1da177e4 | 1412 | } |
a5a2b489 | 1413 | |
1da177e4 LT |
1414 | cifs_buf_release(pSMB); |
1415 | if (rc == -EAGAIN) | |
1416 | goto openRetry; | |
1417 | return rc; | |
1418 | } | |
1419 | ||
e28bc5b1 JL |
1420 | /* |
1421 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1422 | * current bigbuf. | |
1423 | */ | |
1424 | static int | |
1425 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1426 | { | |
5ffef7bf | 1427 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1428 | int remaining = rfclen + 4 - server->total_read; |
1429 | struct cifs_readdata *rdata = mid->callback_data; | |
1430 | ||
1431 | while (remaining > 0) { | |
1432 | int length; | |
1433 | ||
1434 | length = cifs_read_from_socket(server, server->bigbuf, | |
1435 | min_t(unsigned int, remaining, | |
1887f601 | 1436 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1437 | if (length < 0) |
1438 | return length; | |
1439 | server->total_read += length; | |
1440 | remaining -= length; | |
1441 | } | |
1442 | ||
1443 | dequeue_mid(mid, rdata->result); | |
1444 | return 0; | |
1445 | } | |
1446 | ||
09a4707e | 1447 | int |
e28bc5b1 JL |
1448 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1449 | { | |
1450 | int length, len; | |
8d5ce4d2 | 1451 | unsigned int data_offset, data_len; |
e28bc5b1 | 1452 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1453 | char *buf = server->smallbuf; |
1454 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1455 | |
f96637be JP |
1456 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1457 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1458 | |
1459 | /* | |
1460 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1461 | * can if there's not enough data. At this point, we've read down to | |
1462 | * the Mid. | |
1463 | */ | |
eb378711 | 1464 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1465 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1466 | |
5819575e JL |
1467 | rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1; |
1468 | rdata->iov.iov_len = len; | |
e28bc5b1 | 1469 | |
5819575e | 1470 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); |
e28bc5b1 JL |
1471 | if (length < 0) |
1472 | return length; | |
1473 | server->total_read += length; | |
1474 | ||
1475 | /* Was the SMB read successful? */ | |
eb378711 | 1476 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1477 | if (rdata->result != 0) { |
f96637be JP |
1478 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1479 | __func__, rdata->result); | |
e28bc5b1 JL |
1480 | return cifs_readv_discard(server, mid); |
1481 | } | |
1482 | ||
1483 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1484 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1485 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1486 | __func__, server->total_read, | |
1487 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1488 | rdata->result = -EIO; |
1489 | return cifs_readv_discard(server, mid); | |
1490 | } | |
1491 | ||
eb378711 | 1492 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1493 | if (data_offset < server->total_read) { |
1494 | /* | |
1495 | * win2k8 sometimes sends an offset of 0 when the read | |
1496 | * is beyond the EOF. Treat it as if the data starts just after | |
1497 | * the header. | |
1498 | */ | |
f96637be JP |
1499 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1500 | __func__, data_offset); | |
e28bc5b1 JL |
1501 | data_offset = server->total_read; |
1502 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1503 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1504 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1505 | __func__, data_offset); | |
e28bc5b1 JL |
1506 | rdata->result = -EIO; |
1507 | return cifs_readv_discard(server, mid); | |
1508 | } | |
1509 | ||
f96637be JP |
1510 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1511 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1512 | |
1513 | len = data_offset - server->total_read; | |
1514 | if (len > 0) { | |
1515 | /* read any junk before data into the rest of smallbuf */ | |
5819575e JL |
1516 | rdata->iov.iov_base = buf + server->total_read; |
1517 | rdata->iov.iov_len = len; | |
1518 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); | |
e28bc5b1 JL |
1519 | if (length < 0) |
1520 | return length; | |
1521 | server->total_read += length; | |
1522 | } | |
1523 | ||
1524 | /* set up first iov for signature check */ | |
5819575e JL |
1525 | rdata->iov.iov_base = buf; |
1526 | rdata->iov.iov_len = server->total_read; | |
f96637be JP |
1527 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1528 | rdata->iov.iov_base, rdata->iov.iov_len); | |
e28bc5b1 JL |
1529 | |
1530 | /* how much data is in the response? */ | |
eb378711 | 1531 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1532 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1533 | /* data_len is corrupt -- discard frame */ |
1534 | rdata->result = -EIO; | |
1535 | return cifs_readv_discard(server, mid); | |
1536 | } | |
1537 | ||
8321fec4 JL |
1538 | length = rdata->read_into_pages(server, rdata, data_len); |
1539 | if (length < 0) | |
1540 | return length; | |
e28bc5b1 | 1541 | |
8321fec4 | 1542 | server->total_read += length; |
e28bc5b1 JL |
1543 | rdata->bytes = length; |
1544 | ||
f96637be JP |
1545 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1546 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1547 | |
1548 | /* discard anything left over */ | |
5ffef7bf | 1549 | if (server->total_read < buflen) |
e28bc5b1 JL |
1550 | return cifs_readv_discard(server, mid); |
1551 | ||
1552 | dequeue_mid(mid, false); | |
1553 | return length; | |
1554 | } | |
1555 | ||
e28bc5b1 JL |
1556 | static void |
1557 | cifs_readv_callback(struct mid_q_entry *mid) | |
1558 | { | |
1559 | struct cifs_readdata *rdata = mid->callback_data; | |
1560 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1561 | struct TCP_Server_Info *server = tcon->ses->server; | |
5819575e JL |
1562 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
1563 | .rq_nvec = 1, | |
8321fec4 JL |
1564 | .rq_pages = rdata->pages, |
1565 | .rq_npages = rdata->nr_pages, | |
1566 | .rq_pagesz = rdata->pagesz, | |
1567 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1568 | |
f96637be JP |
1569 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1570 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1571 | rdata->bytes); | |
e28bc5b1 | 1572 | |
7c9421e1 | 1573 | switch (mid->mid_state) { |
e28bc5b1 JL |
1574 | case MID_RESPONSE_RECEIVED: |
1575 | /* result already set, check signature */ | |
1576 | if (server->sec_mode & | |
1577 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { | |
985e4ff0 SF |
1578 | int rc = 0; |
1579 | ||
bf5ea0e2 | 1580 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1581 | mid->sequence_number); |
985e4ff0 | 1582 | if (rc) |
f96637be JP |
1583 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1584 | rc); | |
e28bc5b1 JL |
1585 | } |
1586 | /* FIXME: should this be counted toward the initiating task? */ | |
1587 | task_io_account_read(rdata->bytes); | |
1588 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1589 | break; | |
1590 | case MID_REQUEST_SUBMITTED: | |
1591 | case MID_RETRY_NEEDED: | |
1592 | rdata->result = -EAGAIN; | |
1593 | break; | |
1594 | default: | |
1595 | rdata->result = -EIO; | |
1596 | } | |
1597 | ||
da472fc8 | 1598 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1599 | DeleteMidQEntry(mid); |
a891f0f8 | 1600 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1601 | } |
1602 | ||
1603 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1604 | int | |
1605 | cifs_async_readv(struct cifs_readdata *rdata) | |
1606 | { | |
1607 | int rc; | |
1608 | READ_REQ *smb = NULL; | |
1609 | int wct; | |
1610 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
5819575e | 1611 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3 | 1612 | .rq_nvec = 1 }; |
e28bc5b1 | 1613 | |
f96637be JP |
1614 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1615 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1616 | |
1617 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1618 | wct = 12; | |
1619 | else { | |
1620 | wct = 10; /* old style read */ | |
1621 | if ((rdata->offset >> 32) > 0) { | |
1622 | /* can not handle this big offset for old */ | |
1623 | return -EIO; | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1628 | if (rc) | |
1629 | return rc; | |
1630 | ||
1631 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1632 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1633 | ||
1634 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1635 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1636 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1637 | if (wct == 12) | |
1638 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1639 | smb->Remaining = 0; | |
1640 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1641 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1642 | if (wct == 12) | |
1643 | smb->ByteCount = 0; | |
1644 | else { | |
1645 | /* old style read */ | |
1646 | struct smb_com_readx_req *smbr = | |
1647 | (struct smb_com_readx_req *)smb; | |
1648 | smbr->ByteCount = 0; | |
1649 | } | |
1650 | ||
1651 | /* 4 for RFC1001 length + 1 for BCC */ | |
5819575e JL |
1652 | rdata->iov.iov_base = smb; |
1653 | rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
e28bc5b1 | 1654 | |
6993f74a | 1655 | kref_get(&rdata->refcount); |
fec344e3 JL |
1656 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
1657 | cifs_readv_callback, rdata, 0); | |
e28bc5b1 JL |
1658 | |
1659 | if (rc == 0) | |
44c58186 | 1660 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1661 | else |
1662 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1663 | |
1664 | cifs_small_buf_release(smb); | |
1665 | return rc; | |
1666 | } | |
1667 | ||
1da177e4 | 1668 | int |
6d5786a3 PS |
1669 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1670 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1671 | { |
1672 | int rc = -EACCES; | |
1673 | READ_REQ *pSMB = NULL; | |
1674 | READ_RSP *pSMBr = NULL; | |
1675 | char *pReadData = NULL; | |
bfa0d75a | 1676 | int wct; |
ec637e3f SF |
1677 | int resp_buf_type = 0; |
1678 | struct kvec iov[1]; | |
d4ffff1f PS |
1679 | __u32 pid = io_parms->pid; |
1680 | __u16 netfid = io_parms->netfid; | |
1681 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1682 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1683 | unsigned int count = io_parms->length; |
1da177e4 | 1684 | |
f96637be | 1685 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1686 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1687 | wct = 12; |
4c3130ef | 1688 | else { |
bfa0d75a | 1689 | wct = 10; /* old style read */ |
d4ffff1f | 1690 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1691 | /* can not handle this big offset for old */ |
1692 | return -EIO; | |
1693 | } | |
1694 | } | |
1da177e4 LT |
1695 | |
1696 | *nbytes = 0; | |
ec637e3f | 1697 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1698 | if (rc) |
1699 | return rc; | |
1700 | ||
d4ffff1f PS |
1701 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1702 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1703 | ||
1da177e4 LT |
1704 | /* tcon and ses pointer are checked in smb_init */ |
1705 | if (tcon->ses->server == NULL) | |
1706 | return -ECONNABORTED; | |
1707 | ||
ec637e3f | 1708 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1709 | pSMB->Fid = netfid; |
d4ffff1f | 1710 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1711 | if (wct == 12) |
d4ffff1f | 1712 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1713 | |
1da177e4 LT |
1714 | pSMB->Remaining = 0; |
1715 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1716 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1717 | if (wct == 12) |
bfa0d75a SF |
1718 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1719 | else { | |
1720 | /* old style read */ | |
50c2f753 | 1721 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1722 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1723 | pSMBW->ByteCount = 0; |
bfa0d75a | 1724 | } |
ec637e3f SF |
1725 | |
1726 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1727 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1728 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1729 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1730 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1731 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1732 | if (rc) { |
f96637be | 1733 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1734 | } else { |
1735 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1736 | data_length = data_length << 16; | |
1737 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1738 | *nbytes = data_length; | |
1739 | ||
1740 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1741 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1742 | || (data_length > count)) { |
f96637be | 1743 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1744 | data_length, count); |
1da177e4 LT |
1745 | rc = -EIO; |
1746 | *nbytes = 0; | |
1747 | } else { | |
ec637e3f | 1748 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1749 | le16_to_cpu(pSMBr->DataOffset); |
1750 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1751 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1752 | rc = -EFAULT; |
26f57364 | 1753 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1754 | if (*buf) |
50c2f753 | 1755 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1756 | } |
1757 | } | |
1da177e4 | 1758 | |
4b8f930f | 1759 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1760 | if (*buf) { |
1761 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1762 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1763 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1764 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1765 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1766 | /* return buffer to caller to free */ |
1767 | *buf = iov[0].iov_base; | |
790fe579 | 1768 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1769 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1770 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1771 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1772 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1773 | |
1774 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1775 | since file handle passed in no longer valid */ |
1776 | return rc; | |
1777 | } | |
1778 | ||
ec637e3f | 1779 | |
1da177e4 | 1780 | int |
6d5786a3 | 1781 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 | 1782 | unsigned int *nbytes, const char *buf, |
50c2f753 | 1783 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1784 | { |
1785 | int rc = -EACCES; | |
1786 | WRITE_REQ *pSMB = NULL; | |
1787 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1788 | int bytes_returned, wct; |
1da177e4 LT |
1789 | __u32 bytes_sent; |
1790 | __u16 byte_count; | |
fa2989f4 PS |
1791 | __u32 pid = io_parms->pid; |
1792 | __u16 netfid = io_parms->netfid; | |
1793 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1794 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1795 | unsigned int count = io_parms->length; |
1da177e4 | 1796 | |
a24e2d7d SF |
1797 | *nbytes = 0; |
1798 | ||
f96637be | 1799 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1800 | if (tcon->ses == NULL) |
1c955187 SF |
1801 | return -ECONNABORTED; |
1802 | ||
790fe579 | 1803 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1804 | wct = 14; |
4c3130ef | 1805 | else { |
1c955187 | 1806 | wct = 12; |
4c3130ef SF |
1807 | if ((offset >> 32) > 0) { |
1808 | /* can not handle big offset for old srv */ | |
1809 | return -EIO; | |
1810 | } | |
1811 | } | |
1c955187 SF |
1812 | |
1813 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1814 | (void **) &pSMBr); |
1815 | if (rc) | |
1816 | return rc; | |
fa2989f4 PS |
1817 | |
1818 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1819 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1820 | ||
1da177e4 LT |
1821 | /* tcon and ses pointer are checked in smb_init */ |
1822 | if (tcon->ses->server == NULL) | |
1823 | return -ECONNABORTED; | |
1824 | ||
1825 | pSMB->AndXCommand = 0xFF; /* none */ | |
1826 | pSMB->Fid = netfid; | |
1827 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1828 | if (wct == 14) |
1c955187 | 1829 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1830 | |
1da177e4 LT |
1831 | pSMB->Reserved = 0xFFFFFFFF; |
1832 | pSMB->WriteMode = 0; | |
1833 | pSMB->Remaining = 0; | |
1834 | ||
50c2f753 | 1835 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1836 | can send more if LARGE_WRITE_X capability returned by the server and if |
1837 | our buffer is big enough or if we convert to iovecs on socket writes | |
1838 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1839 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1840 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1841 | } else { | |
1842 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1843 | & ~0xFF; | |
1844 | } | |
1845 | ||
1846 | if (bytes_sent > count) | |
1847 | bytes_sent = count; | |
1848 | pSMB->DataOffset = | |
50c2f753 | 1849 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1850 | if (buf) |
61e74801 | 1851 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1852 | else if (ubuf) { |
1853 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1854 | cifs_buf_release(pSMB); |
1855 | return -EFAULT; | |
1856 | } | |
e30dcf3a | 1857 | } else if (count != 0) { |
1da177e4 LT |
1858 | /* No buffer */ |
1859 | cifs_buf_release(pSMB); | |
1860 | return -EINVAL; | |
e30dcf3a | 1861 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1862 | if (wct == 14) |
e30dcf3a | 1863 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1864 | else /* wct == 12 */ |
e30dcf3a | 1865 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1866 | |
1da177e4 LT |
1867 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1868 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1869 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1870 | |
790fe579 | 1871 | if (wct == 14) |
1c955187 | 1872 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1873 | else { /* old style write has byte count 4 bytes earlier |
1874 | so 4 bytes pad */ | |
1875 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1876 | (struct smb_com_writex_req *)pSMB; |
1877 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1878 | } | |
1da177e4 LT |
1879 | |
1880 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1881 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
44c58186 | 1882 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1883 | if (rc) { |
f96637be | 1884 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1885 | } else { |
1886 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1887 | *nbytes = (*nbytes) << 16; | |
1888 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1889 | |
1890 | /* | |
1891 | * Mask off high 16 bits when bytes written as returned by the | |
1892 | * server is greater than bytes requested by the client. Some | |
1893 | * OS/2 servers are known to set incorrect CountHigh values. | |
1894 | */ | |
1895 | if (*nbytes > count) | |
1896 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1897 | } |
1898 | ||
1899 | cifs_buf_release(pSMB); | |
1900 | ||
50c2f753 | 1901 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1902 | since file handle passed in no longer valid */ |
1903 | ||
1904 | return rc; | |
1905 | } | |
1906 | ||
c28c89fc JL |
1907 | void |
1908 | cifs_writedata_release(struct kref *refcount) | |
1909 | { | |
1910 | struct cifs_writedata *wdata = container_of(refcount, | |
1911 | struct cifs_writedata, refcount); | |
1912 | ||
1913 | if (wdata->cfile) | |
1914 | cifsFileInfo_put(wdata->cfile); | |
1915 | ||
1916 | kfree(wdata); | |
1917 | } | |
1918 | ||
1919 | /* | |
1920 | * Write failed with a retryable error. Resend the write request. It's also | |
1921 | * possible that the page was redirtied so re-clean the page. | |
1922 | */ | |
1923 | static void | |
1924 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1925 | { | |
1926 | int i, rc; | |
1927 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
c9de5c80 | 1928 | struct TCP_Server_Info *server; |
c28c89fc JL |
1929 | |
1930 | for (i = 0; i < wdata->nr_pages; i++) { | |
1931 | lock_page(wdata->pages[i]); | |
1932 | clear_page_dirty_for_io(wdata->pages[i]); | |
1933 | } | |
1934 | ||
1935 | do { | |
c9de5c80 PS |
1936 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1937 | rc = server->ops->async_writev(wdata); | |
c28c89fc JL |
1938 | } while (rc == -EAGAIN); |
1939 | ||
1940 | for (i = 0; i < wdata->nr_pages; i++) { | |
94e18007 | 1941 | unlock_page(wdata->pages[i]); |
c51bb0ea | 1942 | if (rc != 0) { |
c28c89fc | 1943 | SetPageError(wdata->pages[i]); |
c51bb0ea OM |
1944 | end_page_writeback(wdata->pages[i]); |
1945 | page_cache_release(wdata->pages[i]); | |
1946 | } | |
c28c89fc JL |
1947 | } |
1948 | ||
1949 | mapping_set_error(inode->i_mapping, rc); | |
1950 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1951 | } | |
1952 | ||
c2e87640 | 1953 | void |
c28c89fc JL |
1954 | cifs_writev_complete(struct work_struct *work) |
1955 | { | |
1956 | struct cifs_writedata *wdata = container_of(work, | |
1957 | struct cifs_writedata, work); | |
1958 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1959 | int i = 0; | |
1960 | ||
1961 | if (wdata->result == 0) { | |
597b027f | 1962 | spin_lock(&inode->i_lock); |
c28c89fc | 1963 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1964 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1965 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1966 | wdata->bytes); | |
1967 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1968 | return cifs_writev_requeue(wdata); | |
1969 | ||
1970 | for (i = 0; i < wdata->nr_pages; i++) { | |
1971 | struct page *page = wdata->pages[i]; | |
1972 | if (wdata->result == -EAGAIN) | |
1973 | __set_page_dirty_nobuffers(page); | |
1974 | else if (wdata->result < 0) | |
1975 | SetPageError(page); | |
1976 | end_page_writeback(page); | |
1977 | page_cache_release(page); | |
1978 | } | |
1979 | if (wdata->result != -EAGAIN) | |
1980 | mapping_set_error(inode->i_mapping, wdata->result); | |
1981 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1982 | } | |
1983 | ||
1984 | struct cifs_writedata * | |
c2e87640 | 1985 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1986 | { |
1987 | struct cifs_writedata *wdata; | |
1988 | ||
1989 | /* this would overflow */ | |
1990 | if (nr_pages == 0) { | |
f96637be | 1991 | cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__); |
c28c89fc JL |
1992 | return NULL; |
1993 | } | |
1994 | ||
1995 | /* writedata + number of page pointers */ | |
1996 | wdata = kzalloc(sizeof(*wdata) + | |
1997 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1998 | if (wdata != NULL) { | |
c28c89fc | 1999 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2000 | INIT_LIST_HEAD(&wdata->list); |
2001 | init_completion(&wdata->done); | |
2002 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2003 | } |
2004 | return wdata; | |
2005 | } | |
2006 | ||
2007 | /* | |
7c9421e1 | 2008 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2009 | * workqueue completion task. |
2010 | */ | |
2011 | static void | |
2012 | cifs_writev_callback(struct mid_q_entry *mid) | |
2013 | { | |
2014 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2015 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2016 | unsigned int written; |
2017 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2018 | ||
7c9421e1 | 2019 | switch (mid->mid_state) { |
c28c89fc JL |
2020 | case MID_RESPONSE_RECEIVED: |
2021 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2022 | if (wdata->result != 0) | |
2023 | break; | |
2024 | ||
2025 | written = le16_to_cpu(smb->CountHigh); | |
2026 | written <<= 16; | |
2027 | written += le16_to_cpu(smb->Count); | |
2028 | /* | |
2029 | * Mask off high 16 bits when bytes written as returned | |
2030 | * by the server is greater than bytes requested by the | |
2031 | * client. OS/2 servers are known to set incorrect | |
2032 | * CountHigh values. | |
2033 | */ | |
2034 | if (written > wdata->bytes) | |
2035 | written &= 0xFFFF; | |
2036 | ||
2037 | if (written < wdata->bytes) | |
2038 | wdata->result = -ENOSPC; | |
2039 | else | |
2040 | wdata->bytes = written; | |
2041 | break; | |
2042 | case MID_REQUEST_SUBMITTED: | |
2043 | case MID_RETRY_NEEDED: | |
2044 | wdata->result = -EAGAIN; | |
2045 | break; | |
2046 | default: | |
2047 | wdata->result = -EIO; | |
2048 | break; | |
2049 | } | |
2050 | ||
da472fc8 | 2051 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2052 | DeleteMidQEntry(mid); |
a891f0f8 | 2053 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2054 | } |
2055 | ||
2056 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2057 | int | |
2058 | cifs_async_writev(struct cifs_writedata *wdata) | |
2059 | { | |
eddb079d | 2060 | int rc = -EACCES; |
c28c89fc JL |
2061 | WRITE_REQ *smb = NULL; |
2062 | int wct; | |
96daf2b0 | 2063 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079d | 2064 | struct kvec iov; |
fec344e3 | 2065 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2066 | |
2067 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2068 | wct = 14; | |
2069 | } else { | |
2070 | wct = 12; | |
2071 | if (wdata->offset >> 32 > 0) { | |
2072 | /* can not handle big offset for old srv */ | |
2073 | return -EIO; | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2078 | if (rc) | |
2079 | goto async_writev_out; | |
2080 | ||
fe5f5d2e JL |
2081 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2082 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2083 | |
c28c89fc | 2084 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2085 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2086 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2087 | if (wct == 14) | |
2088 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2089 | smb->Reserved = 0xFFFFFFFF; | |
2090 | smb->WriteMode = 0; | |
2091 | smb->Remaining = 0; | |
2092 | ||
2093 | smb->DataOffset = | |
2094 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2095 | ||
2096 | /* 4 for RFC1001 length + 1 for BCC */ | |
eddb079d JL |
2097 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; |
2098 | iov.iov_base = smb; | |
c28c89fc | 2099 | |
eddb079d JL |
2100 | rqst.rq_iov = &iov; |
2101 | rqst.rq_nvec = 1; | |
2102 | rqst.rq_pages = wdata->pages; | |
2103 | rqst.rq_npages = wdata->nr_pages; | |
2104 | rqst.rq_pagesz = wdata->pagesz; | |
2105 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2106 | |
f96637be JP |
2107 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2108 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2109 | |
2110 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2111 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2112 | ||
2113 | if (wct == 14) { | |
2114 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2115 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2116 | } else { | |
2117 | /* wct == 12 */ | |
2118 | struct smb_com_writex_req *smbw = | |
2119 | (struct smb_com_writex_req *)smb; | |
2120 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2121 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
eddb079d | 2122 | iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2123 | } |
2124 | ||
2125 | kref_get(&wdata->refcount); | |
fec344e3 JL |
2126 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
2127 | cifs_writev_callback, wdata, 0); | |
c28c89fc JL |
2128 | |
2129 | if (rc == 0) | |
44c58186 | 2130 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc JL |
2131 | else |
2132 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2133 | ||
c28c89fc JL |
2134 | async_writev_out: |
2135 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2136 | return rc; |
2137 | } | |
2138 | ||
d6e04ae6 | 2139 | int |
6d5786a3 | 2140 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2141 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2142 | { |
2143 | int rc = -EACCES; | |
2144 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2145 | int wct; |
d6e04ae6 | 2146 | int smb_hdr_len; |
ec637e3f | 2147 | int resp_buf_type = 0; |
fa2989f4 PS |
2148 | __u32 pid = io_parms->pid; |
2149 | __u16 netfid = io_parms->netfid; | |
2150 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2151 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2152 | unsigned int count = io_parms->length; |
1da177e4 | 2153 | |
fbec9ab9 JL |
2154 | *nbytes = 0; |
2155 | ||
f96637be | 2156 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2157 | |
4c3130ef | 2158 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2159 | wct = 14; |
4c3130ef | 2160 | } else { |
8cc64c6e | 2161 | wct = 12; |
4c3130ef SF |
2162 | if ((offset >> 32) > 0) { |
2163 | /* can not handle big offset for old srv */ | |
2164 | return -EIO; | |
2165 | } | |
2166 | } | |
8cc64c6e | 2167 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2168 | if (rc) |
2169 | return rc; | |
fa2989f4 PS |
2170 | |
2171 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2172 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2173 | ||
1da177e4 LT |
2174 | /* tcon and ses pointer are checked in smb_init */ |
2175 | if (tcon->ses->server == NULL) | |
2176 | return -ECONNABORTED; | |
2177 | ||
d6e04ae6 | 2178 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2179 | pSMB->Fid = netfid; |
2180 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2181 | if (wct == 14) |
8cc64c6e | 2182 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2183 | pSMB->Reserved = 0xFFFFFFFF; |
2184 | pSMB->WriteMode = 0; | |
2185 | pSMB->Remaining = 0; | |
d6e04ae6 | 2186 | |
1da177e4 | 2187 | pSMB->DataOffset = |
50c2f753 | 2188 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2189 | |
3e84469d SF |
2190 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2191 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2192 | /* header + 1 byte pad */ |
2193 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2194 | if (wct == 14) |
be8e3b00 | 2195 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2196 | else /* wct == 12 */ |
be8e3b00 | 2197 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2198 | if (wct == 14) |
8cc64c6e SF |
2199 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2200 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2201 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2202 | (struct smb_com_writex_req *)pSMB; |
2203 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2204 | } | |
3e84469d | 2205 | iov[0].iov_base = pSMB; |
790fe579 | 2206 | if (wct == 14) |
ec637e3f SF |
2207 | iov[0].iov_len = smb_hdr_len + 4; |
2208 | else /* wct == 12 pad bigger by four bytes */ | |
2209 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2210 | |
1da177e4 | 2211 | |
ba9ad725 | 2212 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c58186 | 2213 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2214 | if (rc) { |
f96637be | 2215 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2216 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2217 | /* presumably this can not happen, but best to be safe */ |
2218 | rc = -EIO; | |
d6e04ae6 | 2219 | } else { |
ad7a2926 | 2220 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2221 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2222 | *nbytes = (*nbytes) << 16; | |
2223 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2224 | |
2225 | /* | |
2226 | * Mask off high 16 bits when bytes written as returned by the | |
2227 | * server is greater than bytes requested by the client. OS/2 | |
2228 | * servers are known to set incorrect CountHigh values. | |
2229 | */ | |
2230 | if (*nbytes > count) | |
2231 | *nbytes &= 0xFFFF; | |
50c2f753 | 2232 | } |
1da177e4 | 2233 | |
4b8f930f | 2234 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2235 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2236 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2237 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2238 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2239 | |
50c2f753 | 2240 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2241 | since file handle passed in no longer valid */ |
2242 | ||
2243 | return rc; | |
2244 | } | |
d6e04ae6 | 2245 | |
6d5786a3 PS |
2246 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2247 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2248 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2249 | { | |
2250 | int rc = 0; | |
2251 | LOCK_REQ *pSMB = NULL; | |
2252 | struct kvec iov[2]; | |
2253 | int resp_buf_type; | |
2254 | __u16 count; | |
2255 | ||
f96637be JP |
2256 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2257 | num_lock, num_unlock); | |
9ee305b7 PS |
2258 | |
2259 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2260 | if (rc) | |
2261 | return rc; | |
2262 | ||
2263 | pSMB->Timeout = 0; | |
2264 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2265 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2266 | pSMB->LockType = lock_type; | |
2267 | pSMB->AndXCommand = 0xFF; /* none */ | |
2268 | pSMB->Fid = netfid; /* netfid stays le */ | |
2269 | ||
2270 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2271 | inc_rfc1001_len(pSMB, count); | |
2272 | pSMB->ByteCount = cpu_to_le16(count); | |
2273 | ||
2274 | iov[0].iov_base = (char *)pSMB; | |
2275 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2276 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2277 | iov[1].iov_base = (char *)buf; | |
2278 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2279 | ||
44c58186 | 2280 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2281 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2282 | if (rc) | |
f96637be | 2283 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2284 | |
2285 | return rc; | |
2286 | } | |
d6e04ae6 | 2287 | |
1da177e4 | 2288 | int |
6d5786a3 | 2289 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2290 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2291 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2292 | const __u32 numLock, const __u8 lockType, |
2293 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2294 | { |
2295 | int rc = 0; | |
2296 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2297 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2298 | int bytes_returned; |
a891f0f8 | 2299 | int flags = 0; |
1da177e4 LT |
2300 | __u16 count; |
2301 | ||
f96637be JP |
2302 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2303 | (int)waitFlag, numLock); | |
46810cbf SF |
2304 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2305 | ||
1da177e4 LT |
2306 | if (rc) |
2307 | return rc; | |
2308 | ||
790fe579 | 2309 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2310 | /* no response expected */ |
2311 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2312 | pSMB->Timeout = 0; |
4b18f2a9 | 2313 | } else if (waitFlag) { |
a891f0f8 | 2314 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2315 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2316 | } else { | |
2317 | pSMB->Timeout = 0; | |
2318 | } | |
2319 | ||
2320 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2321 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2322 | pSMB->LockType = lockType; | |
12fed00d | 2323 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2324 | pSMB->AndXCommand = 0xFF; /* none */ |
2325 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2326 | ||
790fe579 | 2327 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2328 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2329 | /* BB where to store pid high? */ |
2330 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2331 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2332 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2333 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2334 | count = sizeof(LOCKING_ANDX_RANGE); | |
2335 | } else { | |
2336 | /* oplock break */ | |
2337 | count = 0; | |
2338 | } | |
be8e3b00 | 2339 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2340 | pSMB->ByteCount = cpu_to_le16(count); |
2341 | ||
7ee1af76 JA |
2342 | if (waitFlag) { |
2343 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2344 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2345 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2346 | } else { |
a891f0f8 | 2347 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2348 | /* SMB buffer freed by function above */ |
7ee1af76 | 2349 | } |
44c58186 | 2350 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2351 | if (rc) |
f96637be | 2352 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2353 | |
50c2f753 | 2354 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2355 | since file handle passed in no longer valid */ |
2356 | return rc; | |
2357 | } | |
2358 | ||
08547b03 | 2359 | int |
6d5786a3 | 2360 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2361 | const __u16 smb_file_id, const __u32 netpid, |
2362 | const loff_t start_offset, const __u64 len, | |
2363 | struct file_lock *pLockData, const __u16 lock_type, | |
2364 | const bool waitFlag) | |
08547b03 SF |
2365 | { |
2366 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2367 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2368 | struct cifs_posix_lock *parm_data; |
2369 | int rc = 0; | |
3a5ff61c | 2370 | int timeout = 0; |
08547b03 | 2371 | int bytes_returned = 0; |
133672ef | 2372 | int resp_buf_type = 0; |
08547b03 | 2373 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2374 | struct kvec iov[1]; |
08547b03 | 2375 | |
f96637be | 2376 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2377 | |
08547b03 SF |
2378 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2379 | ||
2380 | if (rc) | |
2381 | return rc; | |
2382 | ||
2383 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2384 | ||
50c2f753 | 2385 | params = 6; |
08547b03 SF |
2386 | pSMB->MaxSetupCount = 0; |
2387 | pSMB->Reserved = 0; | |
2388 | pSMB->Flags = 0; | |
08547b03 SF |
2389 | pSMB->Reserved2 = 0; |
2390 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2391 | offset = param_offset + params; | |
2392 | ||
08547b03 SF |
2393 | count = sizeof(struct cifs_posix_lock); |
2394 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2395 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2396 | pSMB->SetupCount = 1; |
2397 | pSMB->Reserved3 = 0; | |
c5fd363d | 2398 | if (pLockData) |
08547b03 SF |
2399 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2400 | else | |
2401 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2402 | byte_count = 3 /* pad */ + params + count; | |
2403 | pSMB->DataCount = cpu_to_le16(count); | |
2404 | pSMB->ParameterCount = cpu_to_le16(params); | |
2405 | pSMB->TotalDataCount = pSMB->DataCount; | |
2406 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2407 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2408 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2409 | (((char *) &pSMB->hdr.Protocol) + offset); |
2410 | ||
2411 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2412 | if (waitFlag) { |
133672ef | 2413 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2414 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2415 | pSMB->Timeout = cpu_to_le32(-1); |
2416 | } else | |
2417 | pSMB->Timeout = 0; | |
2418 | ||
4f6bcec9 | 2419 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2420 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2421 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2422 | |
2423 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2424 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2425 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2426 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2427 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2428 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2429 | if (waitFlag) { |
2430 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2431 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2432 | } else { | |
133672ef | 2433 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2434 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2435 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2436 | &resp_buf_type, timeout); | |
2437 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2438 | not try to free it twice below on exit */ | |
2439 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2440 | } |
2441 | ||
08547b03 | 2442 | if (rc) { |
f96637be | 2443 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2444 | } else if (pLockData) { |
fc94cdb9 SF |
2445 | /* lock structure can be returned on get */ |
2446 | __u16 data_offset; | |
2447 | __u16 data_count; | |
2448 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2449 | ||
820a803f | 2450 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2451 | rc = -EIO; /* bad smb */ |
2452 | goto plk_err_exit; | |
2453 | } | |
fc94cdb9 SF |
2454 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2455 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2456 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2457 | rc = -EIO; |
2458 | goto plk_err_exit; | |
2459 | } | |
2460 | parm_data = (struct cifs_posix_lock *) | |
2461 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2462 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2463 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2464 | else { |
2465 | if (parm_data->lock_type == | |
2466 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2467 | pLockData->fl_type = F_RDLCK; | |
2468 | else if (parm_data->lock_type == | |
2469 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2470 | pLockData->fl_type = F_WRLCK; | |
2471 | ||
5443d130 SF |
2472 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2473 | pLockData->fl_end = pLockData->fl_start + | |
2474 | le64_to_cpu(parm_data->length) - 1; | |
2475 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2476 | } |
08547b03 | 2477 | } |
50c2f753 | 2478 | |
fc94cdb9 | 2479 | plk_err_exit: |
08547b03 SF |
2480 | if (pSMB) |
2481 | cifs_small_buf_release(pSMB); | |
2482 | ||
133672ef SF |
2483 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2484 | cifs_small_buf_release(iov[0].iov_base); | |
2485 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2486 | cifs_buf_release(iov[0].iov_base); | |
2487 | ||
08547b03 SF |
2488 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2489 | since file handle passed in no longer valid */ | |
2490 | ||
2491 | return rc; | |
2492 | } | |
2493 | ||
2494 | ||
1da177e4 | 2495 | int |
6d5786a3 | 2496 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2497 | { |
2498 | int rc = 0; | |
2499 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2500 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2501 | |
2502 | /* do not retry on dead session on close */ | |
2503 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2504 | if (rc == -EAGAIN) |
1da177e4 LT |
2505 | return 0; |
2506 | if (rc) | |
2507 | return rc; | |
2508 | ||
1da177e4 | 2509 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2510 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2511 | pSMB->ByteCount = 0; |
792af7b0 | 2512 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2513 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2514 | if (rc) { |
790fe579 | 2515 | if (rc != -EINTR) { |
1da177e4 | 2516 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2517 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2518 | } |
2519 | } | |
2520 | ||
1da177e4 | 2521 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2522 | if (rc == -EAGAIN) |
1da177e4 LT |
2523 | rc = 0; |
2524 | ||
2525 | return rc; | |
2526 | } | |
2527 | ||
b298f223 | 2528 | int |
6d5786a3 | 2529 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2530 | { |
2531 | int rc = 0; | |
2532 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2533 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2534 | |
2535 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2536 | if (rc) | |
2537 | return rc; | |
2538 | ||
2539 | pSMB->FileID = (__u16) smb_file_id; | |
2540 | pSMB->ByteCount = 0; | |
792af7b0 | 2541 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2542 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2543 | if (rc) |
f96637be | 2544 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2545 | |
2546 | return rc; | |
2547 | } | |
2548 | ||
1da177e4 | 2549 | int |
6d5786a3 | 2550 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2551 | const char *from_name, const char *to_name, |
2552 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2553 | { |
2554 | int rc = 0; | |
2555 | RENAME_REQ *pSMB = NULL; | |
2556 | RENAME_RSP *pSMBr = NULL; | |
2557 | int bytes_returned; | |
2558 | int name_len, name_len2; | |
2559 | __u16 count; | |
8ceb9843 | 2560 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2561 | |
f96637be | 2562 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2563 | renameRetry: |
2564 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2565 | (void **) &pSMBr); | |
2566 | if (rc) | |
2567 | return rc; | |
2568 | ||
2569 | pSMB->BufferFormat = 0x04; | |
2570 | pSMB->SearchAttributes = | |
2571 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2572 | ATTR_DIRECTORY); | |
2573 | ||
2574 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2575 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2576 | from_name, PATH_MAX, | |
2577 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2578 | name_len++; /* trailing null */ |
2579 | name_len *= 2; | |
2580 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2581 | /* protocol requires ASCII signature byte on Unicode string */ | |
2582 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2583 | name_len2 = | |
acbbb76a | 2584 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2585 | to_name, PATH_MAX, cifs_sb->local_nls, |
2586 | remap); | |
1da177e4 LT |
2587 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2588 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2589 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2590 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2591 | name_len++; /* trailing null */ |
8ceb9843 PS |
2592 | strncpy(pSMB->OldFileName, from_name, name_len); |
2593 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2594 | name_len2++; /* trailing null */ |
2595 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2596 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2597 | name_len2++; /* trailing null */ |
2598 | name_len2++; /* signature byte */ | |
2599 | } | |
2600 | ||
2601 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2602 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2603 | pSMB->ByteCount = cpu_to_le16(count); |
2604 | ||
2605 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2606 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2607 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2608 | if (rc) |
f96637be | 2609 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2610 | |
1da177e4 LT |
2611 | cifs_buf_release(pSMB); |
2612 | ||
2613 | if (rc == -EAGAIN) | |
2614 | goto renameRetry; | |
2615 | ||
2616 | return rc; | |
2617 | } | |
2618 | ||
6d5786a3 | 2619 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2620 | int netfid, const char *target_name, |
50c2f753 | 2621 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2622 | { |
2623 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2624 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2625 | struct set_file_rename *rename_info; |
1da177e4 LT |
2626 | char *data_offset; |
2627 | char dummy_string[30]; | |
2628 | int rc = 0; | |
2629 | int bytes_returned = 0; | |
2630 | int len_of_str; | |
2631 | __u16 params, param_offset, offset, count, byte_count; | |
2632 | ||
f96637be | 2633 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2634 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2635 | (void **) &pSMBr); | |
2636 | if (rc) | |
2637 | return rc; | |
2638 | ||
2639 | params = 6; | |
2640 | pSMB->MaxSetupCount = 0; | |
2641 | pSMB->Reserved = 0; | |
2642 | pSMB->Flags = 0; | |
2643 | pSMB->Timeout = 0; | |
2644 | pSMB->Reserved2 = 0; | |
2645 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2646 | offset = param_offset + params; | |
2647 | ||
2648 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2649 | rename_info = (struct set_file_rename *) data_offset; | |
2650 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2651 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2652 | pSMB->SetupCount = 1; |
2653 | pSMB->Reserved3 = 0; | |
2654 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2655 | byte_count = 3 /* pad */ + params; | |
2656 | pSMB->ParameterCount = cpu_to_le16(params); | |
2657 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2658 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2659 | pSMB->DataOffset = cpu_to_le16(offset); | |
2660 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2661 | rename_info->overwrite = cpu_to_le32(1); | |
2662 | rename_info->root_fid = 0; | |
2663 | /* unicode only call */ | |
790fe579 | 2664 | if (target_name == NULL) { |
50c2f753 | 2665 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2666 | len_of_str = |
2667 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2668 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2669 | } else { |
acbbb76a SF |
2670 | len_of_str = |
2671 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2672 | target_name, PATH_MAX, nls_codepage, |
2673 | remap); | |
1da177e4 LT |
2674 | } |
2675 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2676 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2677 | byte_count += count; |
2678 | pSMB->DataCount = cpu_to_le16(count); | |
2679 | pSMB->TotalDataCount = pSMB->DataCount; | |
2680 | pSMB->Fid = netfid; | |
2681 | pSMB->InformationLevel = | |
2682 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2683 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2684 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2685 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2686 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2687 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2688 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2689 | if (rc) |
f96637be JP |
2690 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2691 | rc); | |
a5a2b489 | 2692 | |
1da177e4 LT |
2693 | cifs_buf_release(pSMB); |
2694 | ||
2695 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2696 | since file handle passed in no longer valid */ | |
2697 | ||
2698 | return rc; | |
2699 | } | |
2700 | ||
2701 | int | |
6d5786a3 PS |
2702 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2703 | const char *fromName, const __u16 target_tid, const char *toName, | |
2704 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2705 | { |
2706 | int rc = 0; | |
2707 | COPY_REQ *pSMB = NULL; | |
2708 | COPY_RSP *pSMBr = NULL; | |
2709 | int bytes_returned; | |
2710 | int name_len, name_len2; | |
2711 | __u16 count; | |
2712 | ||
f96637be | 2713 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2714 | copyRetry: |
2715 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2716 | (void **) &pSMBr); | |
2717 | if (rc) | |
2718 | return rc; | |
2719 | ||
2720 | pSMB->BufferFormat = 0x04; | |
2721 | pSMB->Tid2 = target_tid; | |
2722 | ||
2723 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2724 | ||
2725 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2726 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2727 | fromName, PATH_MAX, nls_codepage, | |
2728 | remap); | |
1da177e4 LT |
2729 | name_len++; /* trailing null */ |
2730 | name_len *= 2; | |
2731 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2732 | /* protocol requires ASCII signature byte on Unicode string */ | |
2733 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2734 | name_len2 = |
acbbb76a SF |
2735 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2736 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2737 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2738 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2739 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2740 | name_len = strnlen(fromName, PATH_MAX); |
2741 | name_len++; /* trailing null */ | |
2742 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2743 | name_len2 = strnlen(toName, PATH_MAX); | |
2744 | name_len2++; /* trailing null */ | |
2745 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2746 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2747 | name_len2++; /* trailing null */ | |
2748 | name_len2++; /* signature byte */ | |
2749 | } | |
2750 | ||
2751 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2752 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2753 | pSMB->ByteCount = cpu_to_le16(count); |
2754 | ||
2755 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2756 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2757 | if (rc) { | |
f96637be JP |
2758 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2759 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2760 | } |
0d817bc0 | 2761 | cifs_buf_release(pSMB); |
1da177e4 LT |
2762 | |
2763 | if (rc == -EAGAIN) | |
2764 | goto copyRetry; | |
2765 | ||
2766 | return rc; | |
2767 | } | |
2768 | ||
2769 | int | |
6d5786a3 | 2770 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2771 | const char *fromName, const char *toName, |
2772 | const struct nls_table *nls_codepage) | |
2773 | { | |
2774 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2775 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2776 | char *data_offset; | |
2777 | int name_len; | |
2778 | int name_len_target; | |
2779 | int rc = 0; | |
2780 | int bytes_returned = 0; | |
2781 | __u16 params, param_offset, offset, byte_count; | |
2782 | ||
f96637be | 2783 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2784 | createSymLinkRetry: |
2785 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2786 | (void **) &pSMBr); | |
2787 | if (rc) | |
2788 | return rc; | |
2789 | ||
2790 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2791 | name_len = | |
acbbb76a SF |
2792 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2793 | /* find define for this maxpathcomponent */ | |
2794 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2795 | name_len++; /* trailing null */ |
2796 | name_len *= 2; | |
2797 | ||
50c2f753 | 2798 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2799 | name_len = strnlen(fromName, PATH_MAX); |
2800 | name_len++; /* trailing null */ | |
2801 | strncpy(pSMB->FileName, fromName, name_len); | |
2802 | } | |
2803 | params = 6 + name_len; | |
2804 | pSMB->MaxSetupCount = 0; | |
2805 | pSMB->Reserved = 0; | |
2806 | pSMB->Flags = 0; | |
2807 | pSMB->Timeout = 0; | |
2808 | pSMB->Reserved2 = 0; | |
2809 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2810 | InformationLevel) - 4; |
1da177e4 LT |
2811 | offset = param_offset + params; |
2812 | ||
2813 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2814 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2815 | name_len_target = | |
acbbb76a SF |
2816 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2817 | /* find define for this maxpathcomponent */ | |
2818 | , nls_codepage); | |
1da177e4 LT |
2819 | name_len_target++; /* trailing null */ |
2820 | name_len_target *= 2; | |
50c2f753 | 2821 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2822 | name_len_target = strnlen(toName, PATH_MAX); |
2823 | name_len_target++; /* trailing null */ | |
2824 | strncpy(data_offset, toName, name_len_target); | |
2825 | } | |
2826 | ||
2827 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2828 | /* BB find exact max on data count below from sess */ | |
2829 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2830 | pSMB->SetupCount = 1; | |
2831 | pSMB->Reserved3 = 0; | |
2832 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2833 | byte_count = 3 /* pad */ + params + name_len_target; | |
2834 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2835 | pSMB->ParameterCount = cpu_to_le16(params); | |
2836 | pSMB->TotalDataCount = pSMB->DataCount; | |
2837 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2838 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2839 | pSMB->DataOffset = cpu_to_le16(offset); | |
2840 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2841 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2842 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2843 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2844 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2845 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2846 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2847 | if (rc) |
f96637be JP |
2848 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2849 | rc); | |
1da177e4 | 2850 | |
0d817bc0 | 2851 | cifs_buf_release(pSMB); |
1da177e4 LT |
2852 | |
2853 | if (rc == -EAGAIN) | |
2854 | goto createSymLinkRetry; | |
2855 | ||
2856 | return rc; | |
2857 | } | |
2858 | ||
2859 | int | |
6d5786a3 | 2860 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2861 | const char *fromName, const char *toName, |
737b758c | 2862 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2863 | { |
2864 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2865 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2866 | char *data_offset; | |
2867 | int name_len; | |
2868 | int name_len_target; | |
2869 | int rc = 0; | |
2870 | int bytes_returned = 0; | |
2871 | __u16 params, param_offset, offset, byte_count; | |
2872 | ||
f96637be | 2873 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2874 | createHardLinkRetry: |
2875 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2876 | (void **) &pSMBr); | |
2877 | if (rc) | |
2878 | return rc; | |
2879 | ||
2880 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2881 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2882 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2883 | name_len++; /* trailing null */ |
2884 | name_len *= 2; | |
2885 | ||
50c2f753 | 2886 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2887 | name_len = strnlen(toName, PATH_MAX); |
2888 | name_len++; /* trailing null */ | |
2889 | strncpy(pSMB->FileName, toName, name_len); | |
2890 | } | |
2891 | params = 6 + name_len; | |
2892 | pSMB->MaxSetupCount = 0; | |
2893 | pSMB->Reserved = 0; | |
2894 | pSMB->Flags = 0; | |
2895 | pSMB->Timeout = 0; | |
2896 | pSMB->Reserved2 = 0; | |
2897 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2898 | InformationLevel) - 4; |
1da177e4 LT |
2899 | offset = param_offset + params; |
2900 | ||
2901 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2902 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2903 | name_len_target = | |
acbbb76a SF |
2904 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2905 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2906 | name_len_target++; /* trailing null */ |
2907 | name_len_target *= 2; | |
50c2f753 | 2908 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2909 | name_len_target = strnlen(fromName, PATH_MAX); |
2910 | name_len_target++; /* trailing null */ | |
2911 | strncpy(data_offset, fromName, name_len_target); | |
2912 | } | |
2913 | ||
2914 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2915 | /* BB find exact max on data count below from sess*/ | |
2916 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2917 | pSMB->SetupCount = 1; | |
2918 | pSMB->Reserved3 = 0; | |
2919 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2920 | byte_count = 3 /* pad */ + params + name_len_target; | |
2921 | pSMB->ParameterCount = cpu_to_le16(params); | |
2922 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2923 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2924 | pSMB->TotalDataCount = pSMB->DataCount; | |
2925 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2926 | pSMB->DataOffset = cpu_to_le16(offset); | |
2927 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2928 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2929 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2930 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2931 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2932 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2933 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2934 | if (rc) |
f96637be JP |
2935 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2936 | rc); | |
1da177e4 LT |
2937 | |
2938 | cifs_buf_release(pSMB); | |
2939 | if (rc == -EAGAIN) | |
2940 | goto createHardLinkRetry; | |
2941 | ||
2942 | return rc; | |
2943 | } | |
2944 | ||
2945 | int | |
6d5786a3 | 2946 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2947 | const char *from_name, const char *to_name, |
2948 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2949 | { |
2950 | int rc = 0; | |
2951 | NT_RENAME_REQ *pSMB = NULL; | |
2952 | RENAME_RSP *pSMBr = NULL; | |
2953 | int bytes_returned; | |
2954 | int name_len, name_len2; | |
2955 | __u16 count; | |
d6e906f1 | 2956 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2957 | |
f96637be | 2958 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2959 | winCreateHardLinkRetry: |
2960 | ||
2961 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2962 | (void **) &pSMBr); | |
2963 | if (rc) | |
2964 | return rc; | |
2965 | ||
2966 | pSMB->SearchAttributes = | |
2967 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2968 | ATTR_DIRECTORY); | |
2969 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2970 | pSMB->ClusterCount = 0; | |
2971 | ||
2972 | pSMB->BufferFormat = 0x04; | |
2973 | ||
2974 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2975 | name_len = | |
d6e906f1 SF |
2976 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2977 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2978 | name_len++; /* trailing null */ |
2979 | name_len *= 2; | |
fcc7c09d JL |
2980 | |
2981 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2982 | pSMB->OldFileName[name_len] = 0x04; | |
2983 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2984 | name_len2 = |
acbbb76a | 2985 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2986 | to_name, PATH_MAX, cifs_sb->local_nls, |
2987 | remap); | |
1da177e4 LT |
2988 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2989 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2990 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 2991 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2992 | name_len++; /* trailing null */ |
d6e906f1 SF |
2993 | strncpy(pSMB->OldFileName, from_name, name_len); |
2994 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2995 | name_len2++; /* trailing null */ |
2996 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 2997 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2998 | name_len2++; /* trailing null */ |
2999 | name_len2++; /* signature byte */ | |
3000 | } | |
3001 | ||
3002 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3003 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3004 | pSMB->ByteCount = cpu_to_le16(count); |
3005 | ||
3006 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3007 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3008 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3009 | if (rc) |
f96637be | 3010 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3011 | |
1da177e4 LT |
3012 | cifs_buf_release(pSMB); |
3013 | if (rc == -EAGAIN) | |
3014 | goto winCreateHardLinkRetry; | |
3015 | ||
3016 | return rc; | |
3017 | } | |
3018 | ||
3019 | int | |
6d5786a3 | 3020 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3021 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
3022 | const struct nls_table *nls_codepage) |
3023 | { | |
3024 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3025 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3026 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3027 | int rc = 0; | |
3028 | int bytes_returned; | |
3029 | int name_len; | |
3030 | __u16 params, byte_count; | |
460b9696 | 3031 | char *data_start; |
1da177e4 | 3032 | |
f96637be | 3033 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3034 | |
3035 | querySymLinkRetry: | |
3036 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3037 | (void **) &pSMBr); | |
3038 | if (rc) | |
3039 | return rc; | |
3040 | ||
3041 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3042 | name_len = | |
acbbb76a SF |
3043 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3044 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3045 | name_len++; /* trailing null */ |
3046 | name_len *= 2; | |
50c2f753 | 3047 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3048 | name_len = strnlen(searchName, PATH_MAX); |
3049 | name_len++; /* trailing null */ | |
3050 | strncpy(pSMB->FileName, searchName, name_len); | |
3051 | } | |
3052 | ||
3053 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3054 | pSMB->TotalDataCount = 0; | |
3055 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3056 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3057 | pSMB->MaxSetupCount = 0; |
3058 | pSMB->Reserved = 0; | |
3059 | pSMB->Flags = 0; | |
3060 | pSMB->Timeout = 0; | |
3061 | pSMB->Reserved2 = 0; | |
3062 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3063 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3064 | pSMB->DataCount = 0; |
3065 | pSMB->DataOffset = 0; | |
3066 | pSMB->SetupCount = 1; | |
3067 | pSMB->Reserved3 = 0; | |
3068 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3069 | byte_count = params + 1 /* pad */ ; | |
3070 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3071 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3072 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3073 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3074 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3075 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3076 | ||
3077 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3078 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3079 | if (rc) { | |
f96637be | 3080 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3081 | } else { |
3082 | /* decode response */ | |
3083 | ||
3084 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3085 | /* BB also check enough total bytes returned */ |
820a803f | 3086 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3087 | rc = -EIO; |
1da177e4 | 3088 | else { |
0e0d2cf3 | 3089 | bool is_unicode; |
460b9696 JL |
3090 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3091 | ||
3092 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3093 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3094 | |
0e0d2cf3 SF |
3095 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3096 | is_unicode = true; | |
3097 | else | |
3098 | is_unicode = false; | |
3099 | ||
737b758c | 3100 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3101 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3102 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3103 | if (!*symlinkinfo) |
460b9696 | 3104 | rc = -ENOMEM; |
1da177e4 LT |
3105 | } |
3106 | } | |
3107 | cifs_buf_release(pSMB); | |
3108 | if (rc == -EAGAIN) | |
3109 | goto querySymLinkRetry; | |
3110 | return rc; | |
3111 | } | |
3112 | ||
c52a9554 SF |
3113 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3114 | /* | |
3115 | * Recent Windows versions now create symlinks more frequently | |
3116 | * and they use the "reparse point" mechanism below. We can of course | |
3117 | * do symlinks nicely to Samba and other servers which support the | |
3118 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3119 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3120 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3121 | * In the interim this code has been moved to its own config option so | |
3122 | * it is not compiled in by default until callers fixed up and more tested. | |
3123 | */ | |
1da177e4 | 3124 | int |
6d5786a3 | 3125 | CIFSSMBQueryReparseLinkInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3126 | const unsigned char *searchName, |
50c2f753 | 3127 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3128 | const struct nls_table *nls_codepage) |
3129 | { | |
3130 | int rc = 0; | |
3131 | int bytes_returned; | |
50c2f753 SF |
3132 | struct smb_com_transaction_ioctl_req *pSMB; |
3133 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3134 | |
f96637be JP |
3135 | cifs_dbg(FYI, "In Windows reparse style QueryLink for path %s\n", |
3136 | searchName); | |
1da177e4 LT |
3137 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3138 | (void **) &pSMBr); | |
3139 | if (rc) | |
3140 | return rc; | |
3141 | ||
3142 | pSMB->TotalParameterCount = 0 ; | |
3143 | pSMB->TotalDataCount = 0; | |
3144 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3145 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3146 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3147 | pSMB->MaxSetupCount = 4; |
3148 | pSMB->Reserved = 0; | |
3149 | pSMB->ParameterOffset = 0; | |
3150 | pSMB->DataCount = 0; | |
3151 | pSMB->DataOffset = 0; | |
3152 | pSMB->SetupCount = 4; | |
3153 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3154 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3155 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3156 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3157 | pSMB->IsRootFlag = 0; | |
3158 | pSMB->Fid = fid; /* file handle always le */ | |
3159 | pSMB->ByteCount = 0; | |
3160 | ||
3161 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3162 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3163 | if (rc) { | |
f96637be | 3164 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
1da177e4 LT |
3165 | } else { /* decode response */ |
3166 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3167 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3168 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3169 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3170 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3171 | goto qreparse_out; |
3172 | } | |
3173 | if (data_count && (data_count < 2048)) { | |
3174 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3175 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3176 | |
afe48c31 | 3177 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3178 | (struct reparse_data *) |
3179 | ((char *)&pSMBr->hdr.Protocol | |
3180 | + data_offset); | |
afe48c31 SF |
3181 | if ((char *)reparse_buf >= end_of_smb) { |
3182 | rc = -EIO; | |
3183 | goto qreparse_out; | |
3184 | } | |
3185 | if ((reparse_buf->LinkNamesBuf + | |
3186 | reparse_buf->TargetNameOffset + | |
3187 | reparse_buf->TargetNameLen) > end_of_smb) { | |
f96637be | 3188 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
afe48c31 SF |
3189 | rc = -EIO; |
3190 | goto qreparse_out; | |
3191 | } | |
50c2f753 | 3192 | |
afe48c31 SF |
3193 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3194 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3195 | (reparse_buf->LinkNamesBuf + |
3196 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3197 | buflen, |
3198 | reparse_buf->TargetNameLen, | |
3199 | nls_codepage, 0); | |
3200 | } else { /* ASCII names */ | |
3201 | strncpy(symlinkinfo, | |
3202 | reparse_buf->LinkNamesBuf + | |
3203 | reparse_buf->TargetNameOffset, | |
3204 | min_t(const int, buflen, | |
3205 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3206 | } |
afe48c31 SF |
3207 | } else { |
3208 | rc = -EIO; | |
f96637be | 3209 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); |
1da177e4 | 3210 | } |
afe48c31 SF |
3211 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3212 | does not go off the end of the buffer */ | |
f96637be | 3213 | cifs_dbg(FYI, "readlink result - %s\n", symlinkinfo); |
1da177e4 | 3214 | } |
989c7e51 | 3215 | |
1da177e4 | 3216 | qreparse_out: |
4a6d87f1 | 3217 | cifs_buf_release(pSMB); |
1da177e4 LT |
3218 | |
3219 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3220 | since file handle passed in no longer valid */ | |
3221 | ||
3222 | return rc; | |
3223 | } | |
c52a9554 | 3224 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3225 | |
3226 | #ifdef CONFIG_CIFS_POSIX | |
3227 | ||
3228 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3229 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3230 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3231 | { |
3232 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3233 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3234 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3235 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3236 | /* |
3237 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3238 | ace->e_perm, ace->e_tag, ace->e_id); | |
3239 | */ | |
1da177e4 LT |
3240 | |
3241 | return; | |
3242 | } | |
3243 | ||
3244 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3245 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3246 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3247 | { |
3248 | int size = 0; | |
3249 | int i; | |
3250 | __u16 count; | |
50c2f753 SF |
3251 | struct cifs_posix_ace *pACE; |
3252 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3253 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3254 | |
3255 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3256 | return -EOPNOTSUPP; | |
3257 | ||
790fe579 | 3258 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3259 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3260 | pACE = &cifs_acl->ace_array[0]; | |
3261 | size = sizeof(struct cifs_posix_acl); | |
3262 | size += sizeof(struct cifs_posix_ace) * count; | |
3263 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3264 | if (size_of_data_area < size) { |
f96637be JP |
3265 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3266 | size_of_data_area, size); | |
1da177e4 LT |
3267 | return -EINVAL; |
3268 | } | |
790fe579 | 3269 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3270 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3271 | size = sizeof(struct cifs_posix_acl); | |
3272 | size += sizeof(struct cifs_posix_ace) * count; | |
3273 | /* skip past access ACEs to get to default ACEs */ | |
3274 | pACE = &cifs_acl->ace_array[count]; | |
3275 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3276 | size += sizeof(struct cifs_posix_ace) * count; | |
3277 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3278 | if (size_of_data_area < size) |
1da177e4 LT |
3279 | return -EINVAL; |
3280 | } else { | |
3281 | /* illegal type */ | |
3282 | return -EINVAL; | |
3283 | } | |
3284 | ||
3285 | size = posix_acl_xattr_size(count); | |
790fe579 | 3286 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3287 | /* used to query ACL EA size */ |
790fe579 | 3288 | } else if (size > buflen) { |
1da177e4 LT |
3289 | return -ERANGE; |
3290 | } else /* buffer big enough */ { | |
ff7feac9 | 3291 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3292 | for (i = 0; i < count ; i++) { |
3293 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3294 | pACE++; | |
1da177e4 LT |
3295 | } |
3296 | } | |
3297 | return size; | |
3298 | } | |
3299 | ||
50c2f753 SF |
3300 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3301 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3302 | { |
3303 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3304 | ||
ff7feac9 SF |
3305 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3306 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3307 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3308 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3309 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3310 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3311 | } else |
ff7feac9 | 3312 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3313 | /* |
3314 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3315 | ace->e_perm, ace->e_tag, ace->e_id); | |
3316 | */ | |
1da177e4 LT |
3317 | return rc; |
3318 | } | |
3319 | ||
3320 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3321 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3322 | const int buflen, const int acl_type) | |
1da177e4 LT |
3323 | { |
3324 | __u16 rc = 0; | |
50c2f753 SF |
3325 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3326 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3327 | int count; |
3328 | int i; | |
3329 | ||
790fe579 | 3330 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3331 | return 0; |
3332 | ||
3333 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3334 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3335 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3336 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3337 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3338 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3339 | return 0; |
3340 | } | |
3341 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3342 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3343 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3344 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3345 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3346 | else { |
f96637be | 3347 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3348 | return 0; |
3349 | } | |
50c2f753 | 3350 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3351 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3352 | &local_acl->a_entries[i]); | |
790fe579 | 3353 | if (rc != 0) { |
1da177e4 LT |
3354 | /* ACE not converted */ |
3355 | break; | |
3356 | } | |
3357 | } | |
790fe579 | 3358 | if (rc == 0) { |
1da177e4 LT |
3359 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3360 | rc += sizeof(struct cifs_posix_acl); | |
3361 | /* BB add check to make sure ACL does not overflow SMB */ | |
3362 | } | |
3363 | return rc; | |
3364 | } | |
3365 | ||
3366 | int | |
6d5786a3 | 3367 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3368 | const unsigned char *searchName, |
3369 | char *acl_inf, const int buflen, const int acl_type, | |
3370 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3371 | { |
3372 | /* SMB_QUERY_POSIX_ACL */ | |
3373 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3374 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3375 | int rc = 0; | |
3376 | int bytes_returned; | |
3377 | int name_len; | |
3378 | __u16 params, byte_count; | |
50c2f753 | 3379 | |
f96637be | 3380 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3381 | |
3382 | queryAclRetry: | |
3383 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3384 | (void **) &pSMBr); | |
3385 | if (rc) | |
3386 | return rc; | |
50c2f753 | 3387 | |
1da177e4 LT |
3388 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3389 | name_len = | |
acbbb76a SF |
3390 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3391 | searchName, PATH_MAX, nls_codepage, | |
3392 | remap); | |
1da177e4 LT |
3393 | name_len++; /* trailing null */ |
3394 | name_len *= 2; | |
3395 | pSMB->FileName[name_len] = 0; | |
3396 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3397 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3398 | name_len = strnlen(searchName, PATH_MAX); |
3399 | name_len++; /* trailing null */ | |
3400 | strncpy(pSMB->FileName, searchName, name_len); | |
3401 | } | |
3402 | ||
3403 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3404 | pSMB->TotalDataCount = 0; | |
3405 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3406 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3407 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3408 | pSMB->MaxSetupCount = 0; | |
3409 | pSMB->Reserved = 0; | |
3410 | pSMB->Flags = 0; | |
3411 | pSMB->Timeout = 0; | |
3412 | pSMB->Reserved2 = 0; | |
3413 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3414 | offsetof(struct smb_com_transaction2_qpi_req, |
3415 | InformationLevel) - 4); | |
1da177e4 LT |
3416 | pSMB->DataCount = 0; |
3417 | pSMB->DataOffset = 0; | |
3418 | pSMB->SetupCount = 1; | |
3419 | pSMB->Reserved3 = 0; | |
3420 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3421 | byte_count = params + 1 /* pad */ ; | |
3422 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3423 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3424 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3425 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3426 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3427 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3428 | ||
3429 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3430 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3431 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3432 | if (rc) { |
f96637be | 3433 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3434 | } else { |
3435 | /* decode response */ | |
50c2f753 | 3436 | |
1da177e4 | 3437 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3438 | /* BB also check enough total bytes returned */ |
820a803f | 3439 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3440 | rc = -EIO; /* bad smb */ |
3441 | else { | |
3442 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3443 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3444 | rc = cifs_copy_posix_acl(acl_inf, | |
3445 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3446 | buflen, acl_type, count); |
1da177e4 LT |
3447 | } |
3448 | } | |
3449 | cifs_buf_release(pSMB); | |
3450 | if (rc == -EAGAIN) | |
3451 | goto queryAclRetry; | |
3452 | return rc; | |
3453 | } | |
3454 | ||
3455 | int | |
6d5786a3 | 3456 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3457 | const unsigned char *fileName, |
3458 | const char *local_acl, const int buflen, | |
3459 | const int acl_type, | |
3460 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3461 | { |
3462 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3463 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3464 | char *parm_data; | |
3465 | int name_len; | |
3466 | int rc = 0; | |
3467 | int bytes_returned = 0; | |
3468 | __u16 params, byte_count, data_count, param_offset, offset; | |
3469 | ||
f96637be | 3470 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3471 | setAclRetry: |
3472 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3473 | (void **) &pSMBr); |
1da177e4 LT |
3474 | if (rc) |
3475 | return rc; | |
3476 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3477 | name_len = | |
acbbb76a SF |
3478 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3479 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3480 | name_len++; /* trailing null */ |
3481 | name_len *= 2; | |
50c2f753 | 3482 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3483 | name_len = strnlen(fileName, PATH_MAX); |
3484 | name_len++; /* trailing null */ | |
3485 | strncpy(pSMB->FileName, fileName, name_len); | |
3486 | } | |
3487 | params = 6 + name_len; | |
3488 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3489 | /* BB find max SMB size from sess */ |
3490 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3491 | pSMB->MaxSetupCount = 0; |
3492 | pSMB->Reserved = 0; | |
3493 | pSMB->Flags = 0; | |
3494 | pSMB->Timeout = 0; | |
3495 | pSMB->Reserved2 = 0; | |
3496 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3497 | InformationLevel) - 4; |
1da177e4 LT |
3498 | offset = param_offset + params; |
3499 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3500 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3501 | ||
3502 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3503 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3504 | |
790fe579 | 3505 | if (data_count == 0) { |
1da177e4 LT |
3506 | rc = -EOPNOTSUPP; |
3507 | goto setACLerrorExit; | |
3508 | } | |
3509 | pSMB->DataOffset = cpu_to_le16(offset); | |
3510 | pSMB->SetupCount = 1; | |
3511 | pSMB->Reserved3 = 0; | |
3512 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3513 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3514 | byte_count = 3 /* pad */ + params + data_count; | |
3515 | pSMB->DataCount = cpu_to_le16(data_count); | |
3516 | pSMB->TotalDataCount = pSMB->DataCount; | |
3517 | pSMB->ParameterCount = cpu_to_le16(params); | |
3518 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3519 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3520 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3521 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3522 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3523 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3524 | if (rc) |
f96637be | 3525 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3526 | |
3527 | setACLerrorExit: | |
3528 | cifs_buf_release(pSMB); | |
3529 | if (rc == -EAGAIN) | |
3530 | goto setAclRetry; | |
3531 | return rc; | |
3532 | } | |
3533 | ||
f654bac2 SF |
3534 | /* BB fix tabs in this function FIXME BB */ |
3535 | int | |
6d5786a3 | 3536 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3537 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3538 | { |
50c2f753 SF |
3539 | int rc = 0; |
3540 | struct smb_t2_qfi_req *pSMB = NULL; | |
3541 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3542 | int bytes_returned; | |
3543 | __u16 params, byte_count; | |
f654bac2 | 3544 | |
f96637be | 3545 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3546 | if (tcon == NULL) |
3547 | return -ENODEV; | |
f654bac2 SF |
3548 | |
3549 | GetExtAttrRetry: | |
790fe579 SF |
3550 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3551 | (void **) &pSMBr); | |
3552 | if (rc) | |
3553 | return rc; | |
f654bac2 | 3554 | |
ad7a2926 | 3555 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3556 | pSMB->t2.TotalDataCount = 0; |
3557 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3558 | /* BB find exact max data count below from sess structure BB */ | |
3559 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3560 | pSMB->t2.MaxSetupCount = 0; | |
3561 | pSMB->t2.Reserved = 0; | |
3562 | pSMB->t2.Flags = 0; | |
3563 | pSMB->t2.Timeout = 0; | |
3564 | pSMB->t2.Reserved2 = 0; | |
3565 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3566 | Fid) - 4); | |
3567 | pSMB->t2.DataCount = 0; | |
3568 | pSMB->t2.DataOffset = 0; | |
3569 | pSMB->t2.SetupCount = 1; | |
3570 | pSMB->t2.Reserved3 = 0; | |
3571 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3572 | byte_count = params + 1 /* pad */ ; | |
3573 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3574 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3575 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3576 | pSMB->Pad = 0; | |
f654bac2 | 3577 | pSMB->Fid = netfid; |
be8e3b00 | 3578 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3579 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3580 | ||
3581 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3582 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3583 | if (rc) { | |
f96637be | 3584 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3585 | } else { |
3586 | /* decode response */ | |
3587 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3588 | /* BB also check enough total bytes returned */ |
820a803f | 3589 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3590 | /* If rc should we check for EOPNOSUPP and |
3591 | disable the srvino flag? or in caller? */ | |
3592 | rc = -EIO; /* bad smb */ | |
3593 | else { | |
3594 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3595 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3596 | struct file_chattr_info *pfinfo; | |
3597 | /* BB Do we need a cast or hash here ? */ | |
3598 | if (count != 16) { | |
f96637be | 3599 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3600 | rc = -EIO; |
3601 | goto GetExtAttrOut; | |
3602 | } | |
3603 | pfinfo = (struct file_chattr_info *) | |
3604 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3605 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3606 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3607 | } |
3608 | } | |
f654bac2 | 3609 | GetExtAttrOut: |
790fe579 SF |
3610 | cifs_buf_release(pSMB); |
3611 | if (rc == -EAGAIN) | |
3612 | goto GetExtAttrRetry; | |
3613 | return rc; | |
f654bac2 SF |
3614 | } |
3615 | ||
f654bac2 | 3616 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3617 | |
79df1bae JL |
3618 | #ifdef CONFIG_CIFS_ACL |
3619 | /* | |
3620 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3621 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3622 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3623 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3624 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3625 | * by caller | |
3626 | */ | |
3627 | static int | |
3628 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3629 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3630 | void **ret_buf) |
3631 | { | |
3632 | int rc; | |
3633 | __u32 temp_offset; | |
3634 | struct smb_com_ntransact_req *pSMB; | |
3635 | ||
3636 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3637 | (void **)&pSMB); | |
3638 | if (rc) | |
3639 | return rc; | |
3640 | *ret_buf = (void *)pSMB; | |
3641 | pSMB->Reserved = 0; | |
3642 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3643 | pSMB->TotalDataCount = 0; | |
c974befa | 3644 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3645 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3646 | pSMB->DataCount = pSMB->TotalDataCount; | |
3647 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3648 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3649 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3650 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3651 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3652 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3653 | return 0; | |
3654 | } | |
3655 | ||
3656 | static int | |
3657 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3658 | __u32 *pparmlen, __u32 *pdatalen) | |
3659 | { | |
3660 | char *end_of_smb; | |
3661 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3662 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3663 | u16 bcc; |
79df1bae JL |
3664 | |
3665 | *pdatalen = 0; | |
3666 | *pparmlen = 0; | |
3667 | ||
3668 | if (buf == NULL) | |
3669 | return -EINVAL; | |
3670 | ||
3671 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3672 | ||
820a803f JL |
3673 | bcc = get_bcc(&pSMBr->hdr); |
3674 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3675 | (char *)&pSMBr->ByteCount; |
3676 | ||
3677 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3678 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3679 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3680 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3681 | ||
3682 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3683 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3684 | ||
3685 | /* should we also check that parm and data areas do not overlap? */ | |
3686 | if (*ppparm > end_of_smb) { | |
f96637be | 3687 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3688 | return -EINVAL; |
3689 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3690 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3691 | return -EINVAL; |
3692 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3693 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3694 | return -EINVAL; |
3695 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3696 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3697 | *ppdata, data_count, (data_count + *ppdata), | |
3698 | end_of_smb, pSMBr); | |
79df1bae | 3699 | return -EINVAL; |
820a803f | 3700 | } else if (parm_count + data_count > bcc) { |
f96637be | 3701 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3702 | return -EINVAL; |
3703 | } | |
3704 | *pdatalen = data_count; | |
3705 | *pparmlen = parm_count; | |
3706 | return 0; | |
3707 | } | |
3708 | ||
0a4b92c0 SF |
3709 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3710 | int | |
6d5786a3 | 3711 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3712 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3713 | { |
3714 | int rc = 0; | |
3715 | int buf_type = 0; | |
ad7a2926 | 3716 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3717 | struct kvec iov[1]; |
3718 | ||
f96637be | 3719 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3720 | |
630f3f0c SF |
3721 | *pbuflen = 0; |
3722 | *acl_inf = NULL; | |
3723 | ||
b9c7a2bb | 3724 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3725 | 8 /* parm len */, tcon, (void **) &pSMB); |
3726 | if (rc) | |
3727 | return rc; | |
3728 | ||
3729 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3730 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3731 | pSMB->MaxSetupCount = 0; | |
3732 | pSMB->Fid = fid; /* file handle always le */ | |
3733 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3734 | CIFS_ACL_DACL); | |
3735 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3736 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3737 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3738 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3739 | |
a761ac57 | 3740 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3741 | 0); |
44c58186 | 3742 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3743 | if (rc) { |
f96637be | 3744 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3745 | } else { /* decode response */ |
ad7a2926 | 3746 | __le32 *parm; |
630f3f0c SF |
3747 | __u32 parm_len; |
3748 | __u32 acl_len; | |
50c2f753 | 3749 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3750 | char *pdata; |
0a4b92c0 SF |
3751 | |
3752 | /* validate_nttransact */ | |
50c2f753 | 3753 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3754 | &pdata, &parm_len, pbuflen); |
790fe579 | 3755 | if (rc) |
0a4b92c0 SF |
3756 | goto qsec_out; |
3757 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3758 | ||
f96637be JP |
3759 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3760 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3761 | |
3762 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3763 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3764 | *pbuflen = 0; |
0a4b92c0 SF |
3765 | goto qsec_out; |
3766 | } | |
3767 | ||
3768 | /* BB check that data area is minimum length and as big as acl_len */ | |
3769 | ||
af6f4612 | 3770 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3771 | if (acl_len != *pbuflen) { |
f96637be JP |
3772 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3773 | acl_len, *pbuflen); | |
630f3f0c SF |
3774 | if (*pbuflen > acl_len) |
3775 | *pbuflen = acl_len; | |
3776 | } | |
0a4b92c0 | 3777 | |
630f3f0c SF |
3778 | /* check if buffer is big enough for the acl |
3779 | header followed by the smallest SID */ | |
3780 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3781 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3782 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3783 | rc = -EINVAL; |
3784 | *pbuflen = 0; | |
3785 | } else { | |
f7f7c185 | 3786 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3787 | if (*acl_inf == NULL) { |
3788 | *pbuflen = 0; | |
3789 | rc = -ENOMEM; | |
3790 | } | |
630f3f0c | 3791 | } |
0a4b92c0 SF |
3792 | } |
3793 | qsec_out: | |
790fe579 | 3794 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3795 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3796 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3797 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3798 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3799 | return rc; |
3800 | } | |
97837582 SF |
3801 | |
3802 | int | |
6d5786a3 | 3803 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3804 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3805 | { |
3806 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3807 | int rc = 0; | |
3808 | int bytes_returned = 0; | |
3809 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3810 | void *pSMBr; |
97837582 SF |
3811 | |
3812 | setCifsAclRetry: | |
b2a3ad9c | 3813 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3814 | if (rc) |
b2a3ad9c | 3815 | return rc; |
97837582 SF |
3816 | |
3817 | pSMB->MaxSetupCount = 0; | |
3818 | pSMB->Reserved = 0; | |
3819 | ||
3820 | param_count = 8; | |
3821 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3822 | data_count = acllen; | |
3823 | data_offset = param_offset + param_count; | |
3824 | byte_count = 3 /* pad */ + param_count; | |
3825 | ||
3826 | pSMB->DataCount = cpu_to_le32(data_count); | |
3827 | pSMB->TotalDataCount = pSMB->DataCount; | |
3828 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3829 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3830 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3831 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3832 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3833 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3834 | pSMB->SetupCount = 0; | |
3835 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3836 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3837 | ||
3838 | pSMB->Fid = fid; /* file handle always le */ | |
3839 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3840 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3841 | |
3842 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3843 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3844 | data_offset, pntsd, acllen); | |
be8e3b00 | 3845 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3846 | } else |
be8e3b00 | 3847 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3848 | |
3849 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3850 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3851 | ||
f96637be JP |
3852 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3853 | bytes_returned, rc); | |
97837582 | 3854 | if (rc) |
f96637be | 3855 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3856 | cifs_buf_release(pSMB); |
3857 | ||
3858 | if (rc == -EAGAIN) | |
3859 | goto setCifsAclRetry; | |
3860 | ||
3861 | return (rc); | |
3862 | } | |
3863 | ||
79df1bae | 3864 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3865 | |
6b8edfe0 SF |
3866 | /* Legacy Query Path Information call for lookup to old servers such |
3867 | as Win9x/WinME */ | |
68889f26 PS |
3868 | int |
3869 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3870 | const char *search_name, FILE_ALL_INFO *data, | |
3871 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3872 | { |
ad7a2926 SF |
3873 | QUERY_INFORMATION_REQ *pSMB; |
3874 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3875 | int rc = 0; |
3876 | int bytes_returned; | |
3877 | int name_len; | |
3878 | ||
f96637be | 3879 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3880 | QInfRetry: |
3881 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3882 | (void **) &pSMBr); |
6b8edfe0 SF |
3883 | if (rc) |
3884 | return rc; | |
3885 | ||
3886 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3887 | name_len = | |
acbbb76a | 3888 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3889 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3890 | remap); |
6b8edfe0 SF |
3891 | name_len++; /* trailing null */ |
3892 | name_len *= 2; | |
50c2f753 | 3893 | } else { |
68889f26 | 3894 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3895 | name_len++; /* trailing null */ |
68889f26 | 3896 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3897 | } |
3898 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3899 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3900 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3901 | pSMB->ByteCount = cpu_to_le16(name_len); |
3902 | ||
3903 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3904 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3905 | if (rc) { |
f96637be | 3906 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3907 | } else if (data) { |
1bd5bbcb SF |
3908 | struct timespec ts; |
3909 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3910 | |
3911 | /* decode response */ | |
1bd5bbcb | 3912 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3913 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3914 | ts.tv_nsec = 0; |
3915 | ts.tv_sec = time; | |
3916 | /* decode time fields */ | |
68889f26 PS |
3917 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3918 | data->LastWriteTime = data->ChangeTime; | |
3919 | data->LastAccessTime = 0; | |
3920 | data->AllocationSize = | |
70ca734a | 3921 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3922 | data->EndOfFile = data->AllocationSize; |
3923 | data->Attributes = | |
70ca734a | 3924 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3925 | } else |
3926 | rc = -EIO; /* bad buffer passed in */ | |
3927 | ||
3928 | cifs_buf_release(pSMB); | |
3929 | ||
3930 | if (rc == -EAGAIN) | |
3931 | goto QInfRetry; | |
3932 | ||
3933 | return rc; | |
3934 | } | |
3935 | ||
bcd5357f | 3936 | int |
6d5786a3 | 3937 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3938 | u16 netfid, FILE_ALL_INFO *pFindData) |
3939 | { | |
3940 | struct smb_t2_qfi_req *pSMB = NULL; | |
3941 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3942 | int rc = 0; | |
3943 | int bytes_returned; | |
3944 | __u16 params, byte_count; | |
3945 | ||
3946 | QFileInfoRetry: | |
3947 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3948 | (void **) &pSMBr); | |
3949 | if (rc) | |
3950 | return rc; | |
3951 | ||
3952 | params = 2 /* level */ + 2 /* fid */; | |
3953 | pSMB->t2.TotalDataCount = 0; | |
3954 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3955 | /* BB find exact max data count below from sess structure BB */ | |
3956 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3957 | pSMB->t2.MaxSetupCount = 0; | |
3958 | pSMB->t2.Reserved = 0; | |
3959 | pSMB->t2.Flags = 0; | |
3960 | pSMB->t2.Timeout = 0; | |
3961 | pSMB->t2.Reserved2 = 0; | |
3962 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3963 | Fid) - 4); | |
3964 | pSMB->t2.DataCount = 0; | |
3965 | pSMB->t2.DataOffset = 0; | |
3966 | pSMB->t2.SetupCount = 1; | |
3967 | pSMB->t2.Reserved3 = 0; | |
3968 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3969 | byte_count = params + 1 /* pad */ ; | |
3970 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3971 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3972 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3973 | pSMB->Pad = 0; | |
3974 | pSMB->Fid = netfid; | |
be8e3b00 | 3975 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3976 | |
bcd5357f JL |
3977 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3978 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3979 | if (rc) { | |
f96637be | 3980 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
bcd5357f JL |
3981 | } else { /* decode response */ |
3982 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3983 | |
bcd5357f JL |
3984 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3985 | rc = -EIO; | |
820a803f | 3986 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3987 | rc = -EIO; /* bad smb */ |
3988 | else if (pFindData) { | |
3989 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3990 | memcpy((char *) pFindData, | |
3991 | (char *) &pSMBr->hdr.Protocol + | |
3992 | data_offset, sizeof(FILE_ALL_INFO)); | |
3993 | } else | |
3994 | rc = -ENOMEM; | |
3995 | } | |
3996 | cifs_buf_release(pSMB); | |
3997 | if (rc == -EAGAIN) | |
3998 | goto QFileInfoRetry; | |
6b8edfe0 | 3999 | |
bcd5357f JL |
4000 | return rc; |
4001 | } | |
6b8edfe0 | 4002 | |
1da177e4 | 4003 | int |
6d5786a3 | 4004 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4005 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4006 | int legacy /* old style infolevel */, |
737b758c | 4007 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4008 | { |
68889f26 | 4009 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4010 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4011 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4012 | int rc = 0; | |
4013 | int bytes_returned; | |
4014 | int name_len; | |
4015 | __u16 params, byte_count; | |
4016 | ||
f96637be | 4017 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4018 | QPathInfoRetry: |
4019 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4020 | (void **) &pSMBr); | |
4021 | if (rc) | |
4022 | return rc; | |
4023 | ||
4024 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4025 | name_len = | |
68889f26 | 4026 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4027 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4028 | name_len++; /* trailing null */ |
4029 | name_len *= 2; | |
50c2f753 | 4030 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4031 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4032 | name_len++; /* trailing null */ |
68889f26 | 4033 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4034 | } |
4035 | ||
50c2f753 | 4036 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4037 | pSMB->TotalDataCount = 0; |
4038 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4039 | /* BB find exact max SMB PDU from sess structure BB */ |
4040 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4041 | pSMB->MaxSetupCount = 0; |
4042 | pSMB->Reserved = 0; | |
4043 | pSMB->Flags = 0; | |
4044 | pSMB->Timeout = 0; | |
4045 | pSMB->Reserved2 = 0; | |
4046 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4047 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4048 | pSMB->DataCount = 0; |
4049 | pSMB->DataOffset = 0; | |
4050 | pSMB->SetupCount = 1; | |
4051 | pSMB->Reserved3 = 0; | |
4052 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4053 | byte_count = params + 1 /* pad */ ; | |
4054 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4055 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4056 | if (legacy) |
acf1a1b1 SF |
4057 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4058 | else | |
4059 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4060 | pSMB->Reserved4 = 0; |
be8e3b00 | 4061 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4062 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4063 | ||
4064 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4065 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4066 | if (rc) { | |
f96637be | 4067 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4068 | } else { /* decode response */ |
4069 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4070 | ||
acf1a1b1 SF |
4071 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4072 | rc = -EIO; | |
820a803f | 4073 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4074 | rc = -EIO; /* bad smb */ |
820a803f | 4075 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4076 | rc = -EIO; /* 24 or 26 expected but we do not read |
4077 | last field */ | |
68889f26 | 4078 | else if (data) { |
acf1a1b1 | 4079 | int size; |
1da177e4 | 4080 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4081 | |
68889f26 PS |
4082 | /* |
4083 | * On legacy responses we do not read the last field, | |
4084 | * EAsize, fortunately since it varies by subdialect and | |
4085 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4086 | * bytes depending but we don't care here. | |
4087 | */ | |
ad7a2926 | 4088 | if (legacy) |
acf1a1b1 SF |
4089 | size = sizeof(FILE_INFO_STANDARD); |
4090 | else | |
4091 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4092 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4093 | data_offset, size); |
1da177e4 LT |
4094 | } else |
4095 | rc = -ENOMEM; | |
4096 | } | |
4097 | cifs_buf_release(pSMB); | |
4098 | if (rc == -EAGAIN) | |
4099 | goto QPathInfoRetry; | |
4100 | ||
4101 | return rc; | |
4102 | } | |
4103 | ||
c8634fd3 | 4104 | int |
6d5786a3 | 4105 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4106 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4107 | { | |
4108 | struct smb_t2_qfi_req *pSMB = NULL; | |
4109 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4110 | int rc = 0; | |
4111 | int bytes_returned; | |
4112 | __u16 params, byte_count; | |
4113 | ||
4114 | UnixQFileInfoRetry: | |
4115 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4116 | (void **) &pSMBr); | |
4117 | if (rc) | |
4118 | return rc; | |
4119 | ||
4120 | params = 2 /* level */ + 2 /* fid */; | |
4121 | pSMB->t2.TotalDataCount = 0; | |
4122 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4123 | /* BB find exact max data count below from sess structure BB */ | |
4124 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4125 | pSMB->t2.MaxSetupCount = 0; | |
4126 | pSMB->t2.Reserved = 0; | |
4127 | pSMB->t2.Flags = 0; | |
4128 | pSMB->t2.Timeout = 0; | |
4129 | pSMB->t2.Reserved2 = 0; | |
4130 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4131 | Fid) - 4); | |
4132 | pSMB->t2.DataCount = 0; | |
4133 | pSMB->t2.DataOffset = 0; | |
4134 | pSMB->t2.SetupCount = 1; | |
4135 | pSMB->t2.Reserved3 = 0; | |
4136 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4137 | byte_count = params + 1 /* pad */ ; | |
4138 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4139 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4140 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4141 | pSMB->Pad = 0; | |
4142 | pSMB->Fid = netfid; | |
be8e3b00 | 4143 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4144 | |
4145 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4146 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4147 | if (rc) { | |
f96637be | 4148 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
c8634fd3 JL |
4149 | } else { /* decode response */ |
4150 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4151 | ||
820a803f | 4152 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4153 | cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
c8634fd3 JL |
4154 | rc = -EIO; /* bad smb */ |
4155 | } else { | |
4156 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4157 | memcpy((char *) pFindData, | |
4158 | (char *) &pSMBr->hdr.Protocol + | |
4159 | data_offset, | |
4160 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4161 | } | |
4162 | } | |
4163 | ||
4164 | cifs_buf_release(pSMB); | |
4165 | if (rc == -EAGAIN) | |
4166 | goto UnixQFileInfoRetry; | |
4167 | ||
4168 | return rc; | |
4169 | } | |
4170 | ||
1da177e4 | 4171 | int |
6d5786a3 | 4172 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4173 | const unsigned char *searchName, |
582d21e5 | 4174 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4175 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4176 | { |
4177 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4178 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4179 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4180 | int rc = 0; | |
4181 | int bytes_returned = 0; | |
4182 | int name_len; | |
4183 | __u16 params, byte_count; | |
4184 | ||
f96637be | 4185 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4186 | UnixQPathInfoRetry: |
4187 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4188 | (void **) &pSMBr); | |
4189 | if (rc) | |
4190 | return rc; | |
4191 | ||
4192 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4193 | name_len = | |
acbbb76a SF |
4194 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4195 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4196 | name_len++; /* trailing null */ |
4197 | name_len *= 2; | |
50c2f753 | 4198 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4199 | name_len = strnlen(searchName, PATH_MAX); |
4200 | name_len++; /* trailing null */ | |
4201 | strncpy(pSMB->FileName, searchName, name_len); | |
4202 | } | |
4203 | ||
50c2f753 | 4204 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4205 | pSMB->TotalDataCount = 0; |
4206 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4207 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4208 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4209 | pSMB->MaxSetupCount = 0; |
4210 | pSMB->Reserved = 0; | |
4211 | pSMB->Flags = 0; | |
4212 | pSMB->Timeout = 0; | |
4213 | pSMB->Reserved2 = 0; | |
4214 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4215 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4216 | pSMB->DataCount = 0; |
4217 | pSMB->DataOffset = 0; | |
4218 | pSMB->SetupCount = 1; | |
4219 | pSMB->Reserved3 = 0; | |
4220 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4221 | byte_count = params + 1 /* pad */ ; | |
4222 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4223 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4224 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4225 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4226 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4227 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4228 | ||
4229 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4230 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4231 | if (rc) { | |
f96637be | 4232 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4233 | } else { /* decode response */ |
4234 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4235 | ||
820a803f | 4236 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4237 | cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
1da177e4 LT |
4238 | rc = -EIO; /* bad smb */ |
4239 | } else { | |
4240 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4241 | memcpy((char *) pFindData, | |
4242 | (char *) &pSMBr->hdr.Protocol + | |
4243 | data_offset, | |
630f3f0c | 4244 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4245 | } |
4246 | } | |
4247 | cifs_buf_release(pSMB); | |
4248 | if (rc == -EAGAIN) | |
4249 | goto UnixQPathInfoRetry; | |
4250 | ||
4251 | return rc; | |
4252 | } | |
4253 | ||
1da177e4 LT |
4254 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4255 | int | |
6d5786a3 | 4256 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4257 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4258 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4259 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4260 | { |
4261 | /* level 257 SMB_ */ | |
4262 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4263 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4264 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4265 | int rc = 0; |
4266 | int bytes_returned = 0; | |
c052e2b4 | 4267 | int name_len, remap; |
1da177e4 | 4268 | __u16 params, byte_count; |
c052e2b4 | 4269 | struct nls_table *nls_codepage; |
1da177e4 | 4270 | |
f96637be | 4271 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4272 | |
4273 | findFirstRetry: | |
4274 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4275 | (void **) &pSMBr); | |
4276 | if (rc) | |
4277 | return rc; | |
4278 | ||
c052e2b4 SP |
4279 | nls_codepage = cifs_sb->local_nls; |
4280 | remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; | |
4281 | ||
1da177e4 LT |
4282 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4283 | name_len = | |
acbbb76a SF |
4284 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4285 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4286 | /* We can not add the asterik earlier in case |
4287 | it got remapped to 0xF03A as if it were part of the | |
4288 | directory name instead of a wildcard */ | |
1da177e4 | 4289 | name_len *= 2; |
c052e2b4 SP |
4290 | if (msearch) { |
4291 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4292 | pSMB->FileName[name_len+1] = 0; | |
4293 | pSMB->FileName[name_len+2] = '*'; | |
4294 | pSMB->FileName[name_len+3] = 0; | |
4295 | name_len += 4; /* now the trailing null */ | |
4296 | /* null terminate just in case */ | |
4297 | pSMB->FileName[name_len] = 0; | |
4298 | pSMB->FileName[name_len+1] = 0; | |
4299 | name_len += 2; | |
4300 | } | |
1da177e4 LT |
4301 | } else { /* BB add check for overrun of SMB buf BB */ |
4302 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4303 | /* BB fix here and in unicode clause above ie |
790fe579 | 4304 | if (name_len > buffersize-header) |
1da177e4 LT |
4305 | free buffer exit; BB */ |
4306 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4307 | if (msearch) { |
4308 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4309 | pSMB->FileName[name_len+1] = '*'; | |
4310 | pSMB->FileName[name_len+2] = 0; | |
4311 | name_len += 3; | |
4312 | } | |
1da177e4 LT |
4313 | } |
4314 | ||
4315 | params = 12 + name_len /* includes null */ ; | |
4316 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4317 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4318 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4319 | pSMB->MaxSetupCount = 0; |
4320 | pSMB->Reserved = 0; | |
4321 | pSMB->Flags = 0; | |
4322 | pSMB->Timeout = 0; | |
4323 | pSMB->Reserved2 = 0; | |
4324 | byte_count = params + 1 /* pad */ ; | |
4325 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4326 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4327 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4328 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4329 | - 4); | |
1da177e4 LT |
4330 | pSMB->DataCount = 0; |
4331 | pSMB->DataOffset = 0; | |
4332 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4333 | pSMB->Reserved3 = 0; | |
4334 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4335 | pSMB->SearchAttributes = | |
4336 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4337 | ATTR_DIRECTORY); | |
50c2f753 | 4338 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4339 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4340 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4341 | ||
4342 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4343 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4344 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4345 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4346 | ||
4347 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4348 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4349 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4350 | |
88274815 SF |
4351 | if (rc) {/* BB add logic to retry regular search if Unix search |
4352 | rejected unexpectedly by server */ | |
1da177e4 | 4353 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4354 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4355 | |
88274815 | 4356 | cifs_buf_release(pSMB); |
1da177e4 LT |
4357 | |
4358 | /* BB eventually could optimize out free and realloc of buf */ | |
4359 | /* for this case */ | |
4360 | if (rc == -EAGAIN) | |
4361 | goto findFirstRetry; | |
4362 | } else { /* decode response */ | |
4363 | /* BB remember to free buffer if error BB */ | |
4364 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4365 | if (rc == 0) { |
b77d753c SF |
4366 | unsigned int lnoff; |
4367 | ||
1da177e4 | 4368 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4369 | psrch_inf->unicode = true; |
1da177e4 | 4370 | else |
4b18f2a9 | 4371 | psrch_inf->unicode = false; |
1da177e4 LT |
4372 | |
4373 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4374 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4375 | psrch_inf->srch_entries_start = |
4376 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4377 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4378 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4379 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4380 | ||
790fe579 | 4381 | if (parms->EndofSearch) |
4b18f2a9 | 4382 | psrch_inf->endOfSearch = true; |
1da177e4 | 4383 | else |
4b18f2a9 | 4384 | psrch_inf->endOfSearch = false; |
1da177e4 | 4385 | |
50c2f753 SF |
4386 | psrch_inf->entries_in_buffer = |
4387 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4388 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4389 | psrch_inf->entries_in_buffer; |
b77d753c | 4390 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4391 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4392 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4393 | psrch_inf->last_entry = NULL; |
4394 | return rc; | |
4395 | } | |
4396 | ||
0752f152 | 4397 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4398 | lnoff; |
4399 | ||
c052e2b4 SP |
4400 | if (pnetfid) |
4401 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4402 | } else { |
4403 | cifs_buf_release(pSMB); | |
4404 | } | |
4405 | } | |
4406 | ||
4407 | return rc; | |
4408 | } | |
4409 | ||
6d5786a3 PS |
4410 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4411 | __u16 searchHandle, __u16 search_flags, | |
4412 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4413 | { |
4414 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4415 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4416 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4417 | char *response_data; |
4418 | int rc = 0; | |
9438fabb JL |
4419 | int bytes_returned; |
4420 | unsigned int name_len; | |
1da177e4 LT |
4421 | __u16 params, byte_count; |
4422 | ||
f96637be | 4423 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4424 | |
4b18f2a9 | 4425 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4426 | return -ENOENT; |
4427 | ||
4428 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4429 | (void **) &pSMBr); | |
4430 | if (rc) | |
4431 | return rc; | |
4432 | ||
50c2f753 | 4433 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4434 | byte_count = 0; |
4435 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4436 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4437 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4438 | pSMB->MaxSetupCount = 0; |
4439 | pSMB->Reserved = 0; | |
4440 | pSMB->Flags = 0; | |
4441 | pSMB->Timeout = 0; | |
4442 | pSMB->Reserved2 = 0; | |
4443 | pSMB->ParameterOffset = cpu_to_le16( | |
4444 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4445 | pSMB->DataCount = 0; | |
4446 | pSMB->DataOffset = 0; | |
4447 | pSMB->SetupCount = 1; | |
4448 | pSMB->Reserved3 = 0; | |
4449 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4450 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4451 | pSMB->SearchCount = | |
630f3f0c | 4452 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4453 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4454 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4455 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4456 | |
4457 | name_len = psrch_inf->resume_name_len; | |
4458 | params += name_len; | |
790fe579 | 4459 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4460 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4461 | byte_count += name_len; | |
ef6724e3 SF |
4462 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4463 | pSMB->ResumeFileName[name_len] = 0; | |
4464 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4465 | } else { |
4466 | rc = -EINVAL; | |
4467 | goto FNext2_err_exit; | |
4468 | } | |
4469 | byte_count = params + 1 /* pad */ ; | |
4470 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4471 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4472 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4473 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4474 | |
1da177e4 LT |
4475 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4476 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4477 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4478 | if (rc) { |
4479 | if (rc == -EBADF) { | |
4b18f2a9 | 4480 | psrch_inf->endOfSearch = true; |
6353450a | 4481 | cifs_buf_release(pSMB); |
50c2f753 | 4482 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4483 | } else |
f96637be | 4484 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4485 | } else { /* decode response */ |
4486 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4487 | |
790fe579 | 4488 | if (rc == 0) { |
b77d753c SF |
4489 | unsigned int lnoff; |
4490 | ||
1da177e4 LT |
4491 | /* BB fixme add lock for file (srch_info) struct here */ |
4492 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4493 | psrch_inf->unicode = true; |
1da177e4 | 4494 | else |
4b18f2a9 | 4495 | psrch_inf->unicode = false; |
1da177e4 LT |
4496 | response_data = (char *) &pSMBr->hdr.Protocol + |
4497 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4498 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4499 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4500 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4501 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4502 | cifs_small_buf_release( |
4503 | psrch_inf->ntwrk_buf_start); | |
4504 | else | |
4505 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4506 | psrch_inf->srch_entries_start = response_data; |
4507 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4508 | psrch_inf->smallBuf = 0; |
790fe579 | 4509 | if (parms->EndofSearch) |
4b18f2a9 | 4510 | psrch_inf->endOfSearch = true; |
1da177e4 | 4511 | else |
4b18f2a9 | 4512 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4513 | psrch_inf->entries_in_buffer = |
4514 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4515 | psrch_inf->index_of_last_entry += |
4516 | psrch_inf->entries_in_buffer; | |
b77d753c | 4517 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4518 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4519 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4520 | psrch_inf->last_entry = NULL; |
4521 | return rc; | |
4522 | } else | |
4523 | psrch_inf->last_entry = | |
4524 | psrch_inf->srch_entries_start + lnoff; | |
4525 | ||
f96637be JP |
4526 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4527 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4528 | |
4529 | /* BB fixme add unlock here */ | |
4530 | } | |
4531 | ||
4532 | } | |
4533 | ||
4534 | /* BB On error, should we leave previous search buf (and count and | |
4535 | last entry fields) intact or free the previous one? */ | |
4536 | ||
4537 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4538 | since file handle passed in no longer valid */ | |
4539 | FNext2_err_exit: | |
4540 | if (rc != 0) | |
4541 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4542 | return rc; |
4543 | } | |
4544 | ||
4545 | int | |
6d5786a3 | 4546 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4547 | const __u16 searchHandle) |
1da177e4 LT |
4548 | { |
4549 | int rc = 0; | |
4550 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4551 | |
f96637be | 4552 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4553 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4554 | ||
4555 | /* no sense returning error if session restarted | |
4556 | as file handle has been closed */ | |
790fe579 | 4557 | if (rc == -EAGAIN) |
1da177e4 LT |
4558 | return 0; |
4559 | if (rc) | |
4560 | return rc; | |
4561 | ||
1da177e4 LT |
4562 | pSMB->FileID = searchHandle; |
4563 | pSMB->ByteCount = 0; | |
792af7b0 | 4564 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4565 | if (rc) |
f96637be | 4566 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4567 | |
44c58186 | 4568 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4569 | |
4570 | /* Since session is dead, search handle closed on server already */ | |
4571 | if (rc == -EAGAIN) | |
4572 | rc = 0; | |
4573 | ||
4574 | return rc; | |
4575 | } | |
4576 | ||
1da177e4 | 4577 | int |
6d5786a3 | 4578 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4579 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4580 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4581 | { |
4582 | int rc = 0; | |
4583 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4584 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4585 | int name_len, bytes_returned; | |
4586 | __u16 params, byte_count; | |
4587 | ||
f96637be | 4588 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4589 | if (tcon == NULL) |
50c2f753 | 4590 | return -ENODEV; |
1da177e4 LT |
4591 | |
4592 | GetInodeNumberRetry: | |
4593 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4594 | (void **) &pSMBr); |
1da177e4 LT |
4595 | if (rc) |
4596 | return rc; | |
4597 | ||
1da177e4 LT |
4598 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4599 | name_len = | |
acbbb76a | 4600 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4601 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4602 | remap); |
1da177e4 LT |
4603 | name_len++; /* trailing null */ |
4604 | name_len *= 2; | |
50c2f753 | 4605 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4606 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4607 | name_len++; /* trailing null */ |
1208ef1f | 4608 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4609 | } |
4610 | ||
4611 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4612 | pSMB->TotalDataCount = 0; | |
4613 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4614 | /* BB find exact max data count below from sess structure BB */ | |
4615 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4616 | pSMB->MaxSetupCount = 0; | |
4617 | pSMB->Reserved = 0; | |
4618 | pSMB->Flags = 0; | |
4619 | pSMB->Timeout = 0; | |
4620 | pSMB->Reserved2 = 0; | |
4621 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4622 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4623 | pSMB->DataCount = 0; |
4624 | pSMB->DataOffset = 0; | |
4625 | pSMB->SetupCount = 1; | |
4626 | pSMB->Reserved3 = 0; | |
4627 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4628 | byte_count = params + 1 /* pad */ ; | |
4629 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4630 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4631 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4632 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4633 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4634 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4635 | ||
4636 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4637 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4638 | if (rc) { | |
f96637be | 4639 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4640 | } else { |
4641 | /* decode response */ | |
4642 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4643 | /* BB also check enough total bytes returned */ |
820a803f | 4644 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4645 | /* If rc should we check for EOPNOSUPP and |
4646 | disable the srvino flag? or in caller? */ | |
4647 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4648 | else { |
1da177e4 LT |
4649 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4650 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4651 | struct file_internal_info *pfinfo; |
1da177e4 | 4652 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4653 | if (count < 8) { |
f96637be | 4654 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4655 | rc = -EIO; |
4656 | goto GetInodeNumOut; | |
4657 | } | |
4658 | pfinfo = (struct file_internal_info *) | |
4659 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4660 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4661 | } |
4662 | } | |
4663 | GetInodeNumOut: | |
4664 | cifs_buf_release(pSMB); | |
4665 | if (rc == -EAGAIN) | |
4666 | goto GetInodeNumberRetry; | |
4667 | return rc; | |
4668 | } | |
1da177e4 | 4669 | |
fec4585f IM |
4670 | /* parses DFS refferal V3 structure |
4671 | * caller is responsible for freeing target_nodes | |
4672 | * returns: | |
4673 | * on success - 0 | |
4674 | * on failure - errno | |
4675 | */ | |
4676 | static int | |
a1fe78f1 | 4677 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4678 | unsigned int *num_of_nodes, |
4679 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4680 | const struct nls_table *nls_codepage, int remap, |
4681 | const char *searchName) | |
fec4585f IM |
4682 | { |
4683 | int i, rc = 0; | |
4684 | char *data_end; | |
4685 | bool is_unicode; | |
4686 | struct dfs_referral_level_3 *ref; | |
4687 | ||
5ca33c6a HH |
4688 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4689 | is_unicode = true; | |
4690 | else | |
4691 | is_unicode = false; | |
fec4585f IM |
4692 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4693 | ||
4694 | if (*num_of_nodes < 1) { | |
f96637be JP |
4695 | cifs_dbg(VFS, "num_referrals: must be at least > 0, but we get num_referrals = %d\n", |
4696 | *num_of_nodes); | |
fec4585f | 4697 | rc = -EINVAL; |
a1fe78f1 | 4698 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4699 | } |
4700 | ||
4701 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4702 | if (ref->VersionNumber != cpu_to_le16(3)) { |
f96637be JP |
4703 | cifs_dbg(VFS, "Referrals of V%d version are not supported, should be V3\n", |
4704 | le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4705 | rc = -EINVAL; |
a1fe78f1 | 4706 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4707 | } |
4708 | ||
4709 | /* get the upper boundary of the resp buffer */ | |
4710 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4711 | le16_to_cpu(pSMBr->t2.DataCount); | |
4712 | ||
f96637be JP |
4713 | cifs_dbg(FYI, "num_referrals: %d dfs flags: 0x%x ...\n", |
4714 | *num_of_nodes, le32_to_cpu(pSMBr->DFSFlags)); | |
fec4585f | 4715 | |
f96637be JP |
4716 | *target_nodes = kcalloc(*num_of_nodes, sizeof(struct dfs_info3_param), |
4717 | GFP_KERNEL); | |
fec4585f | 4718 | if (*target_nodes == NULL) { |
fec4585f | 4719 | rc = -ENOMEM; |
a1fe78f1 | 4720 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4721 | } |
4722 | ||
3ad2f3fb | 4723 | /* collect necessary data from referrals */ |
fec4585f IM |
4724 | for (i = 0; i < *num_of_nodes; i++) { |
4725 | char *temp; | |
4726 | int max_len; | |
4727 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4728 | ||
0e0d2cf3 | 4729 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4730 | if (is_unicode) { |
331c3135 JL |
4731 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4732 | GFP_KERNEL); | |
2920ee2b SF |
4733 | if (tmp == NULL) { |
4734 | rc = -ENOMEM; | |
4735 | goto parse_DFS_referrals_exit; | |
4736 | } | |
acbbb76a SF |
4737 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4738 | PATH_MAX, nls_codepage, remap); | |
4739 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4740 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4741 | nls_codepage); |
4742 | kfree(tmp); | |
4743 | } else | |
4744 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4745 | ||
fec4585f IM |
4746 | node->server_type = le16_to_cpu(ref->ServerType); |
4747 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4748 | ||
4749 | /* copy DfsPath */ | |
4750 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4751 | max_len = data_end - temp; | |
acbbb76a SF |
4752 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4753 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4754 | if (!node->path_name) { |
4755 | rc = -ENOMEM; | |
a1fe78f1 | 4756 | goto parse_DFS_referrals_exit; |
066ce689 | 4757 | } |
fec4585f IM |
4758 | |
4759 | /* copy link target UNC */ | |
4760 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4761 | max_len = data_end - temp; | |
acbbb76a SF |
4762 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4763 | is_unicode, nls_codepage); | |
d8f2799b | 4764 | if (!node->node_name) { |
d8e2f53a | 4765 | rc = -ENOMEM; |
d8f2799b SM |
4766 | goto parse_DFS_referrals_exit; |
4767 | } | |
4768 | ||
4769 | ref++; | |
fec4585f IM |
4770 | } |
4771 | ||
a1fe78f1 | 4772 | parse_DFS_referrals_exit: |
fec4585f IM |
4773 | if (rc) { |
4774 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4775 | *target_nodes = NULL; | |
4776 | *num_of_nodes = 0; | |
4777 | } | |
4778 | return rc; | |
4779 | } | |
4780 | ||
1da177e4 | 4781 | int |
6d5786a3 | 4782 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4783 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4784 | unsigned int *num_of_nodes, |
737b758c | 4785 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4786 | { |
4787 | /* TRANS2_GET_DFS_REFERRAL */ | |
4788 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4789 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4790 | int rc = 0; |
4791 | int bytes_returned; | |
4792 | int name_len; | |
1da177e4 | 4793 | __u16 params, byte_count; |
c2cf07d5 SF |
4794 | *num_of_nodes = 0; |
4795 | *target_nodes = NULL; | |
1da177e4 | 4796 | |
f96637be | 4797 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4798 | if (ses == NULL) |
4799 | return -ENODEV; | |
4800 | getDFSRetry: | |
4801 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4802 | (void **) &pSMBr); | |
4803 | if (rc) | |
4804 | return rc; | |
50c2f753 SF |
4805 | |
4806 | /* server pointer checked in called function, | |
1982c344 | 4807 | but should never be null here anyway */ |
88257360 | 4808 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4809 | pSMB->hdr.Tid = ses->ipc_tid; |
4810 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4811 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4812 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4813 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4814 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4815 | |
4816 | if (ses->capabilities & CAP_UNICODE) { | |
4817 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4818 | name_len = | |
acbbb76a | 4819 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4820 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4821 | remap); |
1da177e4 LT |
4822 | name_len++; /* trailing null */ |
4823 | name_len *= 2; | |
50c2f753 | 4824 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4825 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4826 | name_len++; /* trailing null */ |
b669f33c | 4827 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4828 | } |
4829 | ||
790fe579 | 4830 | if (ses->server) { |
96daf2b0 | 4831 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4832 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4833 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4834 | } | |
4835 | ||
50c2f753 | 4836 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4837 | |
1da177e4 LT |
4838 | params = 2 /* level */ + name_len /*includes null */ ; |
4839 | pSMB->TotalDataCount = 0; | |
4840 | pSMB->DataCount = 0; | |
4841 | pSMB->DataOffset = 0; | |
4842 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4843 | /* BB find exact max SMB PDU from sess structure BB */ |
4844 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4845 | pSMB->MaxSetupCount = 0; |
4846 | pSMB->Reserved = 0; | |
4847 | pSMB->Flags = 0; | |
4848 | pSMB->Timeout = 0; | |
4849 | pSMB->Reserved2 = 0; | |
4850 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4851 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4852 | pSMB->SetupCount = 1; |
4853 | pSMB->Reserved3 = 0; | |
4854 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4855 | byte_count = params + 3 /* pad */ ; | |
4856 | pSMB->ParameterCount = cpu_to_le16(params); | |
4857 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4858 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4859 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4860 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4861 | ||
4862 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4863 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4864 | if (rc) { | |
f96637be | 4865 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4866 | goto GetDFSRefExit; |
4867 | } | |
4868 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4869 | |
c2cf07d5 | 4870 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4871 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4872 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4873 | goto GetDFSRefExit; |
4874 | } | |
c2cf07d5 | 4875 | |
f96637be JP |
4876 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4877 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4878 | |
fec4585f | 4879 | /* parse returned result into more usable form */ |
a1fe78f1 | 4880 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4881 | target_nodes, nls_codepage, remap, |
b669f33c | 4882 | search_name); |
c2cf07d5 | 4883 | |
1da177e4 | 4884 | GetDFSRefExit: |
0d817bc0 | 4885 | cifs_buf_release(pSMB); |
1da177e4 LT |
4886 | |
4887 | if (rc == -EAGAIN) | |
4888 | goto getDFSRetry; | |
4889 | ||
4890 | return rc; | |
4891 | } | |
4892 | ||
20962438 SF |
4893 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4894 | int | |
6d5786a3 PS |
4895 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4896 | struct kstatfs *FSData) | |
20962438 SF |
4897 | { |
4898 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4899 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4900 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4901 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4902 | int rc = 0; | |
4903 | int bytes_returned = 0; | |
4904 | __u16 params, byte_count; | |
4905 | ||
f96637be | 4906 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4907 | oldQFSInfoRetry: |
4908 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4909 | (void **) &pSMBr); | |
4910 | if (rc) | |
4911 | return rc; | |
20962438 SF |
4912 | |
4913 | params = 2; /* level */ | |
4914 | pSMB->TotalDataCount = 0; | |
4915 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4916 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4917 | pSMB->MaxSetupCount = 0; | |
4918 | pSMB->Reserved = 0; | |
4919 | pSMB->Flags = 0; | |
4920 | pSMB->Timeout = 0; | |
4921 | pSMB->Reserved2 = 0; | |
4922 | byte_count = params + 1 /* pad */ ; | |
4923 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4924 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4925 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4926 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4927 | pSMB->DataCount = 0; | |
4928 | pSMB->DataOffset = 0; | |
4929 | pSMB->SetupCount = 1; | |
4930 | pSMB->Reserved3 = 0; | |
4931 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4932 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4933 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4934 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4935 | ||
4936 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4937 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4938 | if (rc) { | |
f96637be | 4939 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4940 | } else { /* decode response */ |
4941 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4942 | ||
820a803f | 4943 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4944 | rc = -EIO; /* bad smb */ |
4945 | else { | |
4946 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4947 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4948 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4949 | |
50c2f753 | 4950 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4951 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4952 | FSData->f_bsize = | |
4953 | le16_to_cpu(response_data->BytesPerSector) * | |
4954 | le32_to_cpu(response_data-> | |
4955 | SectorsPerAllocationUnit); | |
4956 | FSData->f_blocks = | |
50c2f753 | 4957 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4958 | FSData->f_bfree = FSData->f_bavail = |
4959 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4960 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4961 | (unsigned long long)FSData->f_blocks, | |
4962 | (unsigned long long)FSData->f_bfree, | |
4963 | FSData->f_bsize); | |
20962438 SF |
4964 | } |
4965 | } | |
4966 | cifs_buf_release(pSMB); | |
4967 | ||
4968 | if (rc == -EAGAIN) | |
4969 | goto oldQFSInfoRetry; | |
4970 | ||
4971 | return rc; | |
4972 | } | |
4973 | ||
1da177e4 | 4974 | int |
6d5786a3 PS |
4975 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4976 | struct kstatfs *FSData) | |
1da177e4 LT |
4977 | { |
4978 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4979 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4980 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4981 | FILE_SYSTEM_INFO *response_data; | |
4982 | int rc = 0; | |
4983 | int bytes_returned = 0; | |
4984 | __u16 params, byte_count; | |
4985 | ||
f96637be | 4986 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4987 | QFSInfoRetry: |
4988 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4989 | (void **) &pSMBr); | |
4990 | if (rc) | |
4991 | return rc; | |
4992 | ||
4993 | params = 2; /* level */ | |
4994 | pSMB->TotalDataCount = 0; | |
4995 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4996 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4997 | pSMB->MaxSetupCount = 0; |
4998 | pSMB->Reserved = 0; | |
4999 | pSMB->Flags = 0; | |
5000 | pSMB->Timeout = 0; | |
5001 | pSMB->Reserved2 = 0; | |
5002 | byte_count = params + 1 /* pad */ ; | |
5003 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5004 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5005 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5006 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5007 | pSMB->DataCount = 0; |
5008 | pSMB->DataOffset = 0; | |
5009 | pSMB->SetupCount = 1; | |
5010 | pSMB->Reserved3 = 0; | |
5011 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5012 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5013 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5014 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5015 | ||
5016 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5017 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5018 | if (rc) { | |
f96637be | 5019 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5020 | } else { /* decode response */ |
50c2f753 | 5021 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5022 | |
820a803f | 5023 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5024 | rc = -EIO; /* bad smb */ |
5025 | else { | |
5026 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5027 | |
5028 | response_data = | |
5029 | (FILE_SYSTEM_INFO | |
5030 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5031 | data_offset); | |
5032 | FSData->f_bsize = | |
5033 | le32_to_cpu(response_data->BytesPerSector) * | |
5034 | le32_to_cpu(response_data-> | |
5035 | SectorsPerAllocationUnit); | |
5036 | FSData->f_blocks = | |
5037 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5038 | FSData->f_bfree = FSData->f_bavail = | |
5039 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5040 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5041 | (unsigned long long)FSData->f_blocks, | |
5042 | (unsigned long long)FSData->f_bfree, | |
5043 | FSData->f_bsize); | |
1da177e4 LT |
5044 | } |
5045 | } | |
5046 | cifs_buf_release(pSMB); | |
5047 | ||
5048 | if (rc == -EAGAIN) | |
5049 | goto QFSInfoRetry; | |
5050 | ||
5051 | return rc; | |
5052 | } | |
5053 | ||
5054 | int | |
6d5786a3 | 5055 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5056 | { |
5057 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5058 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5059 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5060 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5061 | int rc = 0; | |
5062 | int bytes_returned = 0; | |
5063 | __u16 params, byte_count; | |
5064 | ||
f96637be | 5065 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5066 | QFSAttributeRetry: |
5067 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5068 | (void **) &pSMBr); | |
5069 | if (rc) | |
5070 | return rc; | |
5071 | ||
5072 | params = 2; /* level */ | |
5073 | pSMB->TotalDataCount = 0; | |
5074 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5075 | /* BB find exact max SMB PDU from sess structure BB */ |
5076 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5077 | pSMB->MaxSetupCount = 0; |
5078 | pSMB->Reserved = 0; | |
5079 | pSMB->Flags = 0; | |
5080 | pSMB->Timeout = 0; | |
5081 | pSMB->Reserved2 = 0; | |
5082 | byte_count = params + 1 /* pad */ ; | |
5083 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5084 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5085 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5086 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5087 | pSMB->DataCount = 0; |
5088 | pSMB->DataOffset = 0; | |
5089 | pSMB->SetupCount = 1; | |
5090 | pSMB->Reserved3 = 0; | |
5091 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5092 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5093 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5094 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5095 | ||
5096 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5097 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5098 | if (rc) { | |
f96637be | 5099 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5100 | } else { /* decode response */ |
5101 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5102 | ||
820a803f | 5103 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5104 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5105 | rc = -EIO; /* bad smb */ |
5106 | } else { | |
5107 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5108 | response_data = | |
5109 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5110 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5111 | data_offset); | |
5112 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5113 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5114 | } |
5115 | } | |
5116 | cifs_buf_release(pSMB); | |
5117 | ||
5118 | if (rc == -EAGAIN) | |
5119 | goto QFSAttributeRetry; | |
5120 | ||
5121 | return rc; | |
5122 | } | |
5123 | ||
5124 | int | |
6d5786a3 | 5125 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5126 | { |
5127 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5128 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5129 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5130 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5131 | int rc = 0; | |
5132 | int bytes_returned = 0; | |
5133 | __u16 params, byte_count; | |
5134 | ||
f96637be | 5135 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5136 | QFSDeviceRetry: |
5137 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5138 | (void **) &pSMBr); | |
5139 | if (rc) | |
5140 | return rc; | |
5141 | ||
5142 | params = 2; /* level */ | |
5143 | pSMB->TotalDataCount = 0; | |
5144 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5145 | /* BB find exact max SMB PDU from sess structure BB */ |
5146 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5147 | pSMB->MaxSetupCount = 0; |
5148 | pSMB->Reserved = 0; | |
5149 | pSMB->Flags = 0; | |
5150 | pSMB->Timeout = 0; | |
5151 | pSMB->Reserved2 = 0; | |
5152 | byte_count = params + 1 /* pad */ ; | |
5153 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5154 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5155 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5156 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5157 | |
5158 | pSMB->DataCount = 0; | |
5159 | pSMB->DataOffset = 0; | |
5160 | pSMB->SetupCount = 1; | |
5161 | pSMB->Reserved3 = 0; | |
5162 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5163 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5164 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5165 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5166 | ||
5167 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5168 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5169 | if (rc) { | |
f96637be | 5170 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5171 | } else { /* decode response */ |
5172 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5173 | ||
820a803f JL |
5174 | if (rc || get_bcc(&pSMBr->hdr) < |
5175 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5176 | rc = -EIO; /* bad smb */ |
5177 | else { | |
5178 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5179 | response_data = | |
737b758c SF |
5180 | (FILE_SYSTEM_DEVICE_INFO *) |
5181 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5182 | data_offset); |
5183 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5184 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5185 | } |
5186 | } | |
5187 | cifs_buf_release(pSMB); | |
5188 | ||
5189 | if (rc == -EAGAIN) | |
5190 | goto QFSDeviceRetry; | |
5191 | ||
5192 | return rc; | |
5193 | } | |
5194 | ||
5195 | int | |
6d5786a3 | 5196 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5197 | { |
5198 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5199 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5200 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5201 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5202 | int rc = 0; | |
5203 | int bytes_returned = 0; | |
5204 | __u16 params, byte_count; | |
5205 | ||
f96637be | 5206 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5207 | QFSUnixRetry: |
f569599a JL |
5208 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5209 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5210 | if (rc) |
5211 | return rc; | |
5212 | ||
5213 | params = 2; /* level */ | |
5214 | pSMB->TotalDataCount = 0; | |
5215 | pSMB->DataCount = 0; | |
5216 | pSMB->DataOffset = 0; | |
5217 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5218 | /* BB find exact max SMB PDU from sess structure BB */ |
5219 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5220 | pSMB->MaxSetupCount = 0; |
5221 | pSMB->Reserved = 0; | |
5222 | pSMB->Flags = 0; | |
5223 | pSMB->Timeout = 0; | |
5224 | pSMB->Reserved2 = 0; | |
5225 | byte_count = params + 1 /* pad */ ; | |
5226 | pSMB->ParameterCount = cpu_to_le16(params); | |
5227 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5228 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5229 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5230 | pSMB->SetupCount = 1; |
5231 | pSMB->Reserved3 = 0; | |
5232 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5233 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5234 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5235 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5236 | ||
5237 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5238 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5239 | if (rc) { | |
f96637be | 5240 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5241 | } else { /* decode response */ |
5242 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5243 | ||
820a803f | 5244 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5245 | rc = -EIO; /* bad smb */ |
5246 | } else { | |
5247 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5248 | response_data = | |
5249 | (FILE_SYSTEM_UNIX_INFO | |
5250 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5251 | data_offset); | |
5252 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5253 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5254 | } |
5255 | } | |
5256 | cifs_buf_release(pSMB); | |
5257 | ||
5258 | if (rc == -EAGAIN) | |
5259 | goto QFSUnixRetry; | |
5260 | ||
5261 | ||
5262 | return rc; | |
5263 | } | |
5264 | ||
ac67055e | 5265 | int |
6d5786a3 | 5266 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5267 | { |
5268 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5269 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5270 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5271 | int rc = 0; | |
5272 | int bytes_returned = 0; | |
5273 | __u16 params, param_offset, offset, byte_count; | |
5274 | ||
f96637be | 5275 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5276 | SETFSUnixRetry: |
f26282c9 | 5277 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5278 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5279 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5280 | if (rc) |
5281 | return rc; | |
5282 | ||
5283 | params = 4; /* 2 bytes zero followed by info level. */ | |
5284 | pSMB->MaxSetupCount = 0; | |
5285 | pSMB->Reserved = 0; | |
5286 | pSMB->Flags = 0; | |
5287 | pSMB->Timeout = 0; | |
5288 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5289 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5290 | - 4; | |
ac67055e JA |
5291 | offset = param_offset + params; |
5292 | ||
5293 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5294 | /* BB find exact max SMB PDU from sess structure BB */ |
5295 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5296 | pSMB->SetupCount = 1; |
5297 | pSMB->Reserved3 = 0; | |
5298 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5299 | byte_count = 1 /* pad */ + params + 12; | |
5300 | ||
5301 | pSMB->DataCount = cpu_to_le16(12); | |
5302 | pSMB->ParameterCount = cpu_to_le16(params); | |
5303 | pSMB->TotalDataCount = pSMB->DataCount; | |
5304 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5305 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5306 | pSMB->DataOffset = cpu_to_le16(offset); | |
5307 | ||
5308 | /* Params. */ | |
5309 | pSMB->FileNum = 0; | |
5310 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5311 | ||
5312 | /* Data. */ | |
5313 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5314 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5315 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5316 | ||
be8e3b00 | 5317 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5318 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5319 | ||
5320 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5321 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5322 | if (rc) { | |
f96637be | 5323 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5324 | } else { /* decode response */ |
5325 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5326 | if (rc) |
ac67055e | 5327 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5328 | } |
5329 | cifs_buf_release(pSMB); | |
5330 | ||
5331 | if (rc == -EAGAIN) | |
5332 | goto SETFSUnixRetry; | |
5333 | ||
5334 | return rc; | |
5335 | } | |
5336 | ||
5337 | ||
1da177e4 LT |
5338 | |
5339 | int | |
6d5786a3 | 5340 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5341 | struct kstatfs *FSData) |
1da177e4 LT |
5342 | { |
5343 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5344 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5345 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5346 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5347 | int rc = 0; | |
5348 | int bytes_returned = 0; | |
5349 | __u16 params, byte_count; | |
5350 | ||
f96637be | 5351 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5352 | QFSPosixRetry: |
5353 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5354 | (void **) &pSMBr); | |
5355 | if (rc) | |
5356 | return rc; | |
5357 | ||
5358 | params = 2; /* level */ | |
5359 | pSMB->TotalDataCount = 0; | |
5360 | pSMB->DataCount = 0; | |
5361 | pSMB->DataOffset = 0; | |
5362 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5363 | /* BB find exact max SMB PDU from sess structure BB */ |
5364 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5365 | pSMB->MaxSetupCount = 0; |
5366 | pSMB->Reserved = 0; | |
5367 | pSMB->Flags = 0; | |
5368 | pSMB->Timeout = 0; | |
5369 | pSMB->Reserved2 = 0; | |
5370 | byte_count = params + 1 /* pad */ ; | |
5371 | pSMB->ParameterCount = cpu_to_le16(params); | |
5372 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5373 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5374 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5375 | pSMB->SetupCount = 1; |
5376 | pSMB->Reserved3 = 0; | |
5377 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5378 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5379 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5380 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5381 | ||
5382 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5383 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5384 | if (rc) { | |
f96637be | 5385 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5386 | } else { /* decode response */ |
5387 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5388 | ||
820a803f | 5389 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5390 | rc = -EIO; /* bad smb */ |
5391 | } else { | |
5392 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5393 | response_data = | |
5394 | (FILE_SYSTEM_POSIX_INFO | |
5395 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5396 | data_offset); | |
5397 | FSData->f_bsize = | |
5398 | le32_to_cpu(response_data->BlockSize); | |
5399 | FSData->f_blocks = | |
5400 | le64_to_cpu(response_data->TotalBlocks); | |
5401 | FSData->f_bfree = | |
5402 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5403 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5404 | FSData->f_bavail = FSData->f_bfree; |
5405 | } else { | |
5406 | FSData->f_bavail = | |
50c2f753 | 5407 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5408 | } |
790fe579 | 5409 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5410 | FSData->f_files = |
50c2f753 | 5411 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5412 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5413 | FSData->f_ffree = |
50c2f753 | 5414 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5415 | } |
5416 | } | |
5417 | cifs_buf_release(pSMB); | |
5418 | ||
5419 | if (rc == -EAGAIN) | |
5420 | goto QFSPosixRetry; | |
5421 | ||
5422 | return rc; | |
5423 | } | |
5424 | ||
5425 | ||
d1433418 PS |
5426 | /* |
5427 | * We can not use write of zero bytes trick to set file size due to need for | |
5428 | * large file support. Also note that this SetPathInfo is preferred to | |
5429 | * SetFileInfo based method in next routine which is only needed to work around | |
5430 | * a sharing violation bugin Samba which this routine can run into. | |
5431 | */ | |
1da177e4 | 5432 | int |
6d5786a3 | 5433 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5434 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5435 | bool set_allocation) | |
1da177e4 LT |
5436 | { |
5437 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5438 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5439 | struct file_end_of_file_info *parm_data; | |
5440 | int name_len; | |
5441 | int rc = 0; | |
5442 | int bytes_returned = 0; | |
d1433418 PS |
5443 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
5444 | ||
1da177e4 LT |
5445 | __u16 params, byte_count, data_count, param_offset, offset; |
5446 | ||
f96637be | 5447 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5448 | SetEOFRetry: |
5449 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5450 | (void **) &pSMBr); | |
5451 | if (rc) | |
5452 | return rc; | |
5453 | ||
5454 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5455 | name_len = | |
d1433418 PS |
5456 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5457 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5458 | name_len++; /* trailing null */ |
5459 | name_len *= 2; | |
3e87d803 | 5460 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5461 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5462 | name_len++; /* trailing null */ |
d1433418 | 5463 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5464 | } |
5465 | params = 6 + name_len; | |
26f57364 | 5466 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5467 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5468 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5469 | pSMB->MaxSetupCount = 0; |
5470 | pSMB->Reserved = 0; | |
5471 | pSMB->Flags = 0; | |
5472 | pSMB->Timeout = 0; | |
5473 | pSMB->Reserved2 = 0; | |
5474 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5475 | InformationLevel) - 4; |
1da177e4 | 5476 | offset = param_offset + params; |
d1433418 | 5477 | if (set_allocation) { |
50c2f753 SF |
5478 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5479 | pSMB->InformationLevel = | |
5480 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5481 | else | |
5482 | pSMB->InformationLevel = | |
5483 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5484 | } else /* Set File Size */ { | |
1da177e4 LT |
5485 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5486 | pSMB->InformationLevel = | |
50c2f753 | 5487 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5488 | else |
5489 | pSMB->InformationLevel = | |
50c2f753 | 5490 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5491 | } |
5492 | ||
5493 | parm_data = | |
5494 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5495 | offset); | |
5496 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5497 | pSMB->DataOffset = cpu_to_le16(offset); | |
5498 | pSMB->SetupCount = 1; | |
5499 | pSMB->Reserved3 = 0; | |
5500 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5501 | byte_count = 3 /* pad */ + params + data_count; | |
5502 | pSMB->DataCount = cpu_to_le16(data_count); | |
5503 | pSMB->TotalDataCount = pSMB->DataCount; | |
5504 | pSMB->ParameterCount = cpu_to_le16(params); | |
5505 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5506 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5507 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5508 | parm_data->FileSize = cpu_to_le64(size); |
5509 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5510 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5511 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5512 | if (rc) |
f96637be | 5513 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5514 | |
5515 | cifs_buf_release(pSMB); | |
5516 | ||
5517 | if (rc == -EAGAIN) | |
5518 | goto SetEOFRetry; | |
5519 | ||
5520 | return rc; | |
5521 | } | |
5522 | ||
5523 | int | |
d1433418 PS |
5524 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5525 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5526 | { |
5527 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5528 | struct file_end_of_file_info *parm_data; |
5529 | int rc = 0; | |
1da177e4 LT |
5530 | __u16 params, param_offset, offset, byte_count, count; |
5531 | ||
f96637be JP |
5532 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5533 | (long long)size); | |
cd63499c SF |
5534 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5535 | ||
1da177e4 LT |
5536 | if (rc) |
5537 | return rc; | |
5538 | ||
d1433418 PS |
5539 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5540 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5541 | |
1da177e4 LT |
5542 | params = 6; |
5543 | pSMB->MaxSetupCount = 0; | |
5544 | pSMB->Reserved = 0; | |
5545 | pSMB->Flags = 0; | |
5546 | pSMB->Timeout = 0; | |
5547 | pSMB->Reserved2 = 0; | |
5548 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5549 | offset = param_offset + params; | |
5550 | ||
1da177e4 LT |
5551 | count = sizeof(struct file_end_of_file_info); |
5552 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5553 | /* BB find exact max SMB PDU from sess structure BB */ |
5554 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5555 | pSMB->SetupCount = 1; |
5556 | pSMB->Reserved3 = 0; | |
5557 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5558 | byte_count = 3 /* pad */ + params + count; | |
5559 | pSMB->DataCount = cpu_to_le16(count); | |
5560 | pSMB->ParameterCount = cpu_to_le16(params); | |
5561 | pSMB->TotalDataCount = pSMB->DataCount; | |
5562 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5563 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5564 | parm_data = | |
50c2f753 SF |
5565 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5566 | + offset); | |
1da177e4 LT |
5567 | pSMB->DataOffset = cpu_to_le16(offset); |
5568 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5569 | pSMB->Fid = cfile->fid.netfid; |
5570 | if (set_allocation) { | |
1da177e4 LT |
5571 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5572 | pSMB->InformationLevel = | |
5573 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5574 | else | |
5575 | pSMB->InformationLevel = | |
5576 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5577 | } else /* Set File Size */ { |
1da177e4 LT |
5578 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5579 | pSMB->InformationLevel = | |
50c2f753 | 5580 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5581 | else |
5582 | pSMB->InformationLevel = | |
50c2f753 | 5583 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5584 | } |
5585 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5586 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5587 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5588 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5589 | if (rc) { |
f96637be JP |
5590 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5591 | rc); | |
1da177e4 LT |
5592 | } |
5593 | ||
50c2f753 | 5594 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5595 | since file handle passed in no longer valid */ |
5596 | ||
5597 | return rc; | |
5598 | } | |
5599 | ||
50c2f753 | 5600 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5601 | an open handle, rather than by pathname - this is awkward due to |
5602 | potential access conflicts on the open, but it is unavoidable for these | |
5603 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5604 | time and resort to the original setpathinfo level which takes the ancient | |
5605 | DOS time format with 2 second granularity */ | |
5606 | int | |
6d5786a3 | 5607 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5608 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5609 | { |
5610 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5611 | char *data_offset; |
5612 | int rc = 0; | |
1da177e4 LT |
5613 | __u16 params, param_offset, offset, byte_count, count; |
5614 | ||
f96637be | 5615 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5616 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5617 | ||
1da177e4 LT |
5618 | if (rc) |
5619 | return rc; | |
5620 | ||
2dd2dfa0 JL |
5621 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5622 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5623 | |
1da177e4 LT |
5624 | params = 6; |
5625 | pSMB->MaxSetupCount = 0; | |
5626 | pSMB->Reserved = 0; | |
5627 | pSMB->Flags = 0; | |
5628 | pSMB->Timeout = 0; | |
5629 | pSMB->Reserved2 = 0; | |
5630 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5631 | offset = param_offset + params; | |
5632 | ||
b2a3ad9c JL |
5633 | data_offset = (char *)pSMB + |
5634 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5635 | |
26f57364 | 5636 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5637 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5638 | /* BB find max SMB PDU from sess */ |
5639 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5640 | pSMB->SetupCount = 1; |
5641 | pSMB->Reserved3 = 0; | |
5642 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5643 | byte_count = 3 /* pad */ + params + count; | |
5644 | pSMB->DataCount = cpu_to_le16(count); | |
5645 | pSMB->ParameterCount = cpu_to_le16(params); | |
5646 | pSMB->TotalDataCount = pSMB->DataCount; | |
5647 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5648 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5649 | pSMB->DataOffset = cpu_to_le16(offset); | |
5650 | pSMB->Fid = fid; | |
5651 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5652 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5653 | else | |
5654 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5655 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5656 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5657 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5658 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5659 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5660 | if (rc) |
f96637be JP |
5661 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5662 | rc); | |
1da177e4 | 5663 | |
50c2f753 | 5664 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5665 | since file handle passed in no longer valid */ |
5666 | ||
5667 | return rc; | |
5668 | } | |
5669 | ||
6d22f098 | 5670 | int |
6d5786a3 | 5671 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5672 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5673 | { | |
5674 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5675 | char *data_offset; | |
5676 | int rc = 0; | |
5677 | __u16 params, param_offset, offset, byte_count, count; | |
5678 | ||
f96637be | 5679 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5680 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5681 | ||
5682 | if (rc) | |
5683 | return rc; | |
5684 | ||
5685 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5686 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5687 | ||
5688 | params = 6; | |
5689 | pSMB->MaxSetupCount = 0; | |
5690 | pSMB->Reserved = 0; | |
5691 | pSMB->Flags = 0; | |
5692 | pSMB->Timeout = 0; | |
5693 | pSMB->Reserved2 = 0; | |
5694 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5695 | offset = param_offset + params; | |
5696 | ||
5697 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5698 | ||
5699 | count = 1; | |
5700 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5701 | /* BB find max SMB PDU from sess */ | |
5702 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5703 | pSMB->SetupCount = 1; | |
5704 | pSMB->Reserved3 = 0; | |
5705 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5706 | byte_count = 3 /* pad */ + params + count; | |
5707 | pSMB->DataCount = cpu_to_le16(count); | |
5708 | pSMB->ParameterCount = cpu_to_le16(params); | |
5709 | pSMB->TotalDataCount = pSMB->DataCount; | |
5710 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5711 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5712 | pSMB->DataOffset = cpu_to_le16(offset); | |
5713 | pSMB->Fid = fid; | |
5714 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5715 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5716 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5717 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5718 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5719 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5720 | if (rc) |
f96637be | 5721 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5722 | |
5723 | return rc; | |
5724 | } | |
1da177e4 LT |
5725 | |
5726 | int | |
6d5786a3 | 5727 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5728 | const char *fileName, const FILE_BASIC_INFO *data, |
5729 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5730 | { |
5731 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5732 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5733 | int name_len; | |
5734 | int rc = 0; | |
5735 | int bytes_returned = 0; | |
5736 | char *data_offset; | |
5737 | __u16 params, param_offset, offset, byte_count, count; | |
5738 | ||
f96637be | 5739 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5740 | |
5741 | SetTimesRetry: | |
5742 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5743 | (void **) &pSMBr); | |
5744 | if (rc) | |
5745 | return rc; | |
5746 | ||
5747 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5748 | name_len = | |
acbbb76a SF |
5749 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5750 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5751 | name_len++; /* trailing null */ |
5752 | name_len *= 2; | |
50c2f753 | 5753 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5754 | name_len = strnlen(fileName, PATH_MAX); |
5755 | name_len++; /* trailing null */ | |
5756 | strncpy(pSMB->FileName, fileName, name_len); | |
5757 | } | |
5758 | ||
5759 | params = 6 + name_len; | |
26f57364 | 5760 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5761 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5762 | /* BB find max SMB PDU from sess structure BB */ |
5763 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5764 | pSMB->MaxSetupCount = 0; |
5765 | pSMB->Reserved = 0; | |
5766 | pSMB->Flags = 0; | |
5767 | pSMB->Timeout = 0; | |
5768 | pSMB->Reserved2 = 0; | |
5769 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5770 | InformationLevel) - 4; |
1da177e4 LT |
5771 | offset = param_offset + params; |
5772 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5773 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5774 | pSMB->DataOffset = cpu_to_le16(offset); | |
5775 | pSMB->SetupCount = 1; | |
5776 | pSMB->Reserved3 = 0; | |
5777 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5778 | byte_count = 3 /* pad */ + params + count; | |
5779 | ||
5780 | pSMB->DataCount = cpu_to_le16(count); | |
5781 | pSMB->ParameterCount = cpu_to_le16(params); | |
5782 | pSMB->TotalDataCount = pSMB->DataCount; | |
5783 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5784 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5785 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5786 | else | |
5787 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5788 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5789 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5790 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5791 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5792 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5793 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5794 | if (rc) |
f96637be | 5795 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5796 | |
5797 | cifs_buf_release(pSMB); | |
5798 | ||
5799 | if (rc == -EAGAIN) | |
5800 | goto SetTimesRetry; | |
5801 | ||
5802 | return rc; | |
5803 | } | |
5804 | ||
5805 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5806 | /* Can be used to set attributes */ | |
5807 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5808 | handling it anyway and NT4 was what we thought it would be needed for | |
5809 | Do not delete it until we prove whether needed for Win9x though */ | |
5810 | int | |
6d5786a3 | 5811 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5812 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5813 | { | |
5814 | SETATTR_REQ *pSMB = NULL; | |
5815 | SETATTR_RSP *pSMBr = NULL; | |
5816 | int rc = 0; | |
5817 | int bytes_returned; | |
5818 | int name_len; | |
5819 | ||
f96637be | 5820 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5821 | |
5822 | SetAttrLgcyRetry: | |
5823 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5824 | (void **) &pSMBr); | |
5825 | if (rc) | |
5826 | return rc; | |
5827 | ||
5828 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5829 | name_len = | |
acbbb76a SF |
5830 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5831 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5832 | name_len++; /* trailing null */ |
5833 | name_len *= 2; | |
50c2f753 | 5834 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5835 | name_len = strnlen(fileName, PATH_MAX); |
5836 | name_len++; /* trailing null */ | |
5837 | strncpy(pSMB->fileName, fileName, name_len); | |
5838 | } | |
5839 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5840 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5841 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5842 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5843 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5844 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5845 | if (rc) |
f96637be | 5846 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5847 | |
5848 | cifs_buf_release(pSMB); | |
5849 | ||
5850 | if (rc == -EAGAIN) | |
5851 | goto SetAttrLgcyRetry; | |
5852 | ||
5853 | return rc; | |
5854 | } | |
5855 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5856 | ||
654cf14a JL |
5857 | static void |
5858 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5859 | const struct cifs_unix_set_info_args *args) | |
5860 | { | |
49418b2c | 5861 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5862 | u64 mode = args->mode; |
5863 | ||
49418b2c EB |
5864 | if (uid_valid(args->uid)) |
5865 | uid = from_kuid(&init_user_ns, args->uid); | |
5866 | if (gid_valid(args->gid)) | |
5867 | gid = from_kgid(&init_user_ns, args->gid); | |
5868 | ||
654cf14a JL |
5869 | /* |
5870 | * Samba server ignores set of file size to zero due to bugs in some | |
5871 | * older clients, but we should be precise - we use SetFileSize to | |
5872 | * set file size and do not want to truncate file size to zero | |
25985edc | 5873 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5874 | * zero instead of -1 here |
5875 | */ | |
5876 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5877 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5878 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5879 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5880 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5881 | data_offset->Uid = cpu_to_le64(uid); |
5882 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5883 | /* better to leave device as zero when it is */ |
5884 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5885 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5886 | data_offset->Permissions = cpu_to_le64(mode); | |
5887 | ||
5888 | if (S_ISREG(mode)) | |
5889 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5890 | else if (S_ISDIR(mode)) | |
5891 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5892 | else if (S_ISLNK(mode)) | |
5893 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5894 | else if (S_ISCHR(mode)) | |
5895 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5896 | else if (S_ISBLK(mode)) | |
5897 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5898 | else if (S_ISFIFO(mode)) | |
5899 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5900 | else if (S_ISSOCK(mode)) | |
5901 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5902 | } | |
5903 | ||
3bbeeb3c | 5904 | int |
6d5786a3 | 5905 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5906 | const struct cifs_unix_set_info_args *args, |
5907 | u16 fid, u32 pid_of_opener) | |
5908 | { | |
5909 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5910 | char *data_offset; |
3bbeeb3c JL |
5911 | int rc = 0; |
5912 | u16 params, param_offset, offset, byte_count, count; | |
5913 | ||
f96637be | 5914 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5915 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5916 | ||
5917 | if (rc) | |
5918 | return rc; | |
5919 | ||
5920 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5921 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5922 | ||
5923 | params = 6; | |
5924 | pSMB->MaxSetupCount = 0; | |
5925 | pSMB->Reserved = 0; | |
5926 | pSMB->Flags = 0; | |
5927 | pSMB->Timeout = 0; | |
5928 | pSMB->Reserved2 = 0; | |
5929 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5930 | offset = param_offset + params; | |
5931 | ||
b2a3ad9c JL |
5932 | data_offset = (char *)pSMB + |
5933 | offsetof(struct smb_hdr, Protocol) + offset; | |
5934 | ||
3bbeeb3c JL |
5935 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5936 | ||
5937 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5938 | /* BB find max SMB PDU from sess */ | |
5939 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5940 | pSMB->SetupCount = 1; | |
5941 | pSMB->Reserved3 = 0; | |
5942 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5943 | byte_count = 3 /* pad */ + params + count; | |
5944 | pSMB->DataCount = cpu_to_le16(count); | |
5945 | pSMB->ParameterCount = cpu_to_le16(params); | |
5946 | pSMB->TotalDataCount = pSMB->DataCount; | |
5947 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5948 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5949 | pSMB->DataOffset = cpu_to_le16(offset); | |
5950 | pSMB->Fid = fid; | |
5951 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5952 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5953 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5954 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5955 | ||
b2a3ad9c | 5956 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5957 | |
792af7b0 | 5958 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5959 | if (rc) |
f96637be JP |
5960 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5961 | rc); | |
3bbeeb3c JL |
5962 | |
5963 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5964 | since file handle passed in no longer valid */ | |
5965 | ||
5966 | return rc; | |
5967 | } | |
5968 | ||
1da177e4 | 5969 | int |
6d5786a3 | 5970 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5971 | const char *file_name, |
01ea95e3 JL |
5972 | const struct cifs_unix_set_info_args *args, |
5973 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5974 | { |
5975 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5976 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5977 | int name_len; | |
5978 | int rc = 0; | |
5979 | int bytes_returned = 0; | |
5980 | FILE_UNIX_BASIC_INFO *data_offset; | |
5981 | __u16 params, param_offset, offset, count, byte_count; | |
5982 | ||
f96637be | 5983 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5984 | setPermsRetry: |
5985 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5986 | (void **) &pSMBr); | |
5987 | if (rc) | |
5988 | return rc; | |
5989 | ||
5990 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5991 | name_len = | |
ff691e96 | 5992 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5993 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5994 | name_len++; /* trailing null */ |
5995 | name_len *= 2; | |
3e87d803 | 5996 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 5997 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5998 | name_len++; /* trailing null */ |
ff691e96 | 5999 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6000 | } |
6001 | ||
6002 | params = 6 + name_len; | |
26f57364 | 6003 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6004 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6005 | /* BB find max SMB PDU from sess structure BB */ |
6006 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6007 | pSMB->MaxSetupCount = 0; |
6008 | pSMB->Reserved = 0; | |
6009 | pSMB->Flags = 0; | |
6010 | pSMB->Timeout = 0; | |
6011 | pSMB->Reserved2 = 0; | |
6012 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6013 | InformationLevel) - 4; |
1da177e4 LT |
6014 | offset = param_offset + params; |
6015 | data_offset = | |
6016 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6017 | offset); | |
6018 | memset(data_offset, 0, count); | |
6019 | pSMB->DataOffset = cpu_to_le16(offset); | |
6020 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6021 | pSMB->SetupCount = 1; | |
6022 | pSMB->Reserved3 = 0; | |
6023 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6024 | byte_count = 3 /* pad */ + params + count; | |
6025 | pSMB->ParameterCount = cpu_to_le16(params); | |
6026 | pSMB->DataCount = cpu_to_le16(count); | |
6027 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6028 | pSMB->TotalDataCount = pSMB->DataCount; | |
6029 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6030 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6031 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6032 | |
654cf14a | 6033 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6034 | |
6035 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6036 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6037 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6038 | if (rc) |
f96637be | 6039 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6040 | |
0d817bc0 | 6041 | cifs_buf_release(pSMB); |
1da177e4 LT |
6042 | if (rc == -EAGAIN) |
6043 | goto setPermsRetry; | |
6044 | return rc; | |
6045 | } | |
6046 | ||
1da177e4 | 6047 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6048 | /* |
6049 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6050 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6051 | * it looks for that attribute name and stuffs that value into the EAData | |
6052 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6053 | * buffer. In both cases, the return value is either the length of the | |
6054 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6055 | * the data isn't copied to it, but the length is returned. | |
6056 | */ | |
1da177e4 | 6057 | ssize_t |
6d5786a3 | 6058 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6059 | const unsigned char *searchName, const unsigned char *ea_name, |
6060 | char *EAData, size_t buf_size, | |
6061 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6062 | { |
6063 | /* BB assumes one setup word */ | |
6064 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6065 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6066 | int rc = 0; | |
6067 | int bytes_returned; | |
6e462b9f | 6068 | int list_len; |
f0d3868b | 6069 | struct fealist *ea_response_data; |
50c2f753 SF |
6070 | struct fea *temp_fea; |
6071 | char *temp_ptr; | |
0cd126b5 | 6072 | char *end_of_smb; |
f0d3868b | 6073 | __u16 params, byte_count, data_offset; |
5980fc96 | 6074 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6075 | |
f96637be | 6076 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6077 | QAllEAsRetry: |
6078 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6079 | (void **) &pSMBr); | |
6080 | if (rc) | |
6081 | return rc; | |
6082 | ||
6083 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6084 | list_len = |
acbbb76a SF |
6085 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6086 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6087 | list_len++; /* trailing null */ |
6088 | list_len *= 2; | |
1da177e4 | 6089 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6090 | list_len = strnlen(searchName, PATH_MAX); |
6091 | list_len++; /* trailing null */ | |
6092 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6093 | } |
6094 | ||
6e462b9f | 6095 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6096 | pSMB->TotalDataCount = 0; |
6097 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6098 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6099 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6100 | pSMB->MaxSetupCount = 0; |
6101 | pSMB->Reserved = 0; | |
6102 | pSMB->Flags = 0; | |
6103 | pSMB->Timeout = 0; | |
6104 | pSMB->Reserved2 = 0; | |
6105 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6106 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6107 | pSMB->DataCount = 0; |
6108 | pSMB->DataOffset = 0; | |
6109 | pSMB->SetupCount = 1; | |
6110 | pSMB->Reserved3 = 0; | |
6111 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6112 | byte_count = params + 1 /* pad */ ; | |
6113 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6114 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6115 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6116 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6117 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6118 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6119 | ||
6120 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6121 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6122 | if (rc) { | |
f96637be | 6123 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6124 | goto QAllEAsOut; |
6125 | } | |
1da177e4 | 6126 | |
f0d3868b JL |
6127 | |
6128 | /* BB also check enough total bytes returned */ | |
6129 | /* BB we need to improve the validity checking | |
6130 | of these trans2 responses */ | |
6131 | ||
6132 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6133 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6134 | rc = -EIO; /* bad smb */ |
6135 | goto QAllEAsOut; | |
6136 | } | |
6137 | ||
6138 | /* check that length of list is not more than bcc */ | |
6139 | /* check that each entry does not go beyond length | |
6140 | of list */ | |
6141 | /* check that each element of each entry does not | |
6142 | go beyond end of list */ | |
6143 | /* validate_trans2_offsets() */ | |
6144 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6145 | ||
6146 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6147 | ea_response_data = (struct fealist *) | |
6148 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6149 | ||
6e462b9f | 6150 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6151 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6152 | if (list_len <= 8) { |
f96637be | 6153 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
f0d3868b JL |
6154 | goto QAllEAsOut; |
6155 | } | |
6156 | ||
0cd126b5 | 6157 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6158 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6159 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6160 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6161 | rc = -EIO; |
6162 | goto QAllEAsOut; | |
6163 | } | |
6164 | ||
f0d3868b | 6165 | /* account for ea list len */ |
6e462b9f | 6166 | list_len -= 4; |
f0d3868b JL |
6167 | temp_fea = ea_response_data->list; |
6168 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6169 | while (list_len > 0) { |
122ca007 | 6170 | unsigned int name_len; |
f0d3868b | 6171 | __u16 value_len; |
0cd126b5 | 6172 | |
6e462b9f | 6173 | list_len -= 4; |
f0d3868b | 6174 | temp_ptr += 4; |
0cd126b5 JL |
6175 | /* make sure we can read name_len and value_len */ |
6176 | if (list_len < 0) { | |
f96637be | 6177 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6178 | rc = -EIO; |
6179 | goto QAllEAsOut; | |
6180 | } | |
6181 | ||
6182 | name_len = temp_fea->name_len; | |
6183 | value_len = le16_to_cpu(temp_fea->value_len); | |
6184 | list_len -= name_len + 1 + value_len; | |
6185 | if (list_len < 0) { | |
f96637be | 6186 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6187 | rc = -EIO; |
6188 | goto QAllEAsOut; | |
6189 | } | |
6190 | ||
31c0519f | 6191 | if (ea_name) { |
91d065c4 | 6192 | if (ea_name_len == name_len && |
ac423446 | 6193 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6194 | temp_ptr += name_len + 1; |
6195 | rc = value_len; | |
6196 | if (buf_size == 0) | |
6197 | goto QAllEAsOut; | |
6198 | if ((size_t)value_len > buf_size) { | |
6199 | rc = -ERANGE; | |
6200 | goto QAllEAsOut; | |
6201 | } | |
6202 | memcpy(EAData, temp_ptr, value_len); | |
6203 | goto QAllEAsOut; | |
6204 | } | |
f0d3868b | 6205 | } else { |
31c0519f JL |
6206 | /* account for prefix user. and trailing null */ |
6207 | rc += (5 + 1 + name_len); | |
6208 | if (rc < (int) buf_size) { | |
6209 | memcpy(EAData, "user.", 5); | |
6210 | EAData += 5; | |
6211 | memcpy(EAData, temp_ptr, name_len); | |
6212 | EAData += name_len; | |
6213 | /* null terminate name */ | |
6214 | *EAData = 0; | |
6215 | ++EAData; | |
6216 | } else if (buf_size == 0) { | |
6217 | /* skip copy - calc size only */ | |
6218 | } else { | |
6219 | /* stop before overrun buffer */ | |
6220 | rc = -ERANGE; | |
6221 | break; | |
6222 | } | |
1da177e4 | 6223 | } |
0cd126b5 | 6224 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6225 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6226 | } |
f0d3868b | 6227 | |
31c0519f JL |
6228 | /* didn't find the named attribute */ |
6229 | if (ea_name) | |
6230 | rc = -ENODATA; | |
6231 | ||
f0d3868b | 6232 | QAllEAsOut: |
0d817bc0 | 6233 | cifs_buf_release(pSMB); |
1da177e4 LT |
6234 | if (rc == -EAGAIN) |
6235 | goto QAllEAsRetry; | |
6236 | ||
6237 | return (ssize_t)rc; | |
6238 | } | |
6239 | ||
1da177e4 | 6240 | int |
6d5786a3 PS |
6241 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6242 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6243 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6244 | int remap) | |
1da177e4 LT |
6245 | { |
6246 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6247 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6248 | struct fealist *parm_data; | |
6249 | int name_len; | |
6250 | int rc = 0; | |
6251 | int bytes_returned = 0; | |
6252 | __u16 params, param_offset, byte_count, offset, count; | |
6253 | ||
f96637be | 6254 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6255 | SetEARetry: |
6256 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6257 | (void **) &pSMBr); | |
6258 | if (rc) | |
6259 | return rc; | |
6260 | ||
6261 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6262 | name_len = | |
acbbb76a SF |
6263 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6264 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6265 | name_len++; /* trailing null */ |
6266 | name_len *= 2; | |
50c2f753 | 6267 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6268 | name_len = strnlen(fileName, PATH_MAX); |
6269 | name_len++; /* trailing null */ | |
6270 | strncpy(pSMB->FileName, fileName, name_len); | |
6271 | } | |
6272 | ||
6273 | params = 6 + name_len; | |
6274 | ||
6275 | /* done calculating parms using name_len of file name, | |
6276 | now use name_len to calculate length of ea name | |
6277 | we are going to create in the inode xattrs */ | |
790fe579 | 6278 | if (ea_name == NULL) |
1da177e4 LT |
6279 | name_len = 0; |
6280 | else | |
50c2f753 | 6281 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6282 | |
dae5dbdb | 6283 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6284 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6285 | /* BB find max SMB PDU from sess */ |
6286 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6287 | pSMB->MaxSetupCount = 0; |
6288 | pSMB->Reserved = 0; | |
6289 | pSMB->Flags = 0; | |
6290 | pSMB->Timeout = 0; | |
6291 | pSMB->Reserved2 = 0; | |
6292 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6293 | InformationLevel) - 4; |
1da177e4 LT |
6294 | offset = param_offset + params; |
6295 | pSMB->InformationLevel = | |
6296 | cpu_to_le16(SMB_SET_FILE_EA); | |
6297 | ||
6298 | parm_data = | |
6299 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6300 | offset); | |
6301 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6302 | pSMB->DataOffset = cpu_to_le16(offset); | |
6303 | pSMB->SetupCount = 1; | |
6304 | pSMB->Reserved3 = 0; | |
6305 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6306 | byte_count = 3 /* pad */ + params + count; | |
6307 | pSMB->DataCount = cpu_to_le16(count); | |
6308 | parm_data->list_len = cpu_to_le32(count); | |
6309 | parm_data->list[0].EA_flags = 0; | |
6310 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6311 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6312 | /* EA names are always ASCII */ |
790fe579 | 6313 | if (ea_name) |
50c2f753 | 6314 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6315 | parm_data->list[0].name[name_len] = 0; |
6316 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6317 | /* caller ensures that ea_value_len is less than 64K but | |
6318 | we need to ensure that it fits within the smb */ | |
6319 | ||
50c2f753 SF |
6320 | /*BB add length check to see if it would fit in |
6321 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6322 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6323 | if (ea_value_len) | |
50c2f753 SF |
6324 | memcpy(parm_data->list[0].name+name_len+1, |
6325 | ea_value, ea_value_len); | |
1da177e4 LT |
6326 | |
6327 | pSMB->TotalDataCount = pSMB->DataCount; | |
6328 | pSMB->ParameterCount = cpu_to_le16(params); | |
6329 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6330 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6331 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6332 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6333 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6334 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6335 | if (rc) |
f96637be | 6336 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6337 | |
6338 | cifs_buf_release(pSMB); | |
6339 | ||
6340 | if (rc == -EAGAIN) | |
6341 | goto SetEARetry; | |
6342 | ||
6343 | return rc; | |
6344 | } | |
1da177e4 | 6345 | #endif |
0eff0e26 SF |
6346 | |
6347 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6348 | /* | |
6349 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6350 | * to allow network clients (such as Windows) to display updated | |
6351 | * lists of files in directory listings automatically when | |
6352 | * files are added by one user when another user has the | |
6353 | * same directory open on their desktop. The Linux cifs kernel | |
6354 | * client hooked into the kernel side of this interface for | |
6355 | * the same reason, but ironically when the VFS moved from | |
6356 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6357 | * network file system clients (the most obvious use case | |
6358 | * for notify interfaces is when multiple users can update | |
6359 | * the contents of the same directory - exactly what network | |
6360 | * file systems can do) although the server (Samba) could | |
6361 | * still use it. For the short term we leave the worker | |
6362 | * function ifdeffed out (below) until inotify is fixed | |
6363 | * in the VFS to make it easier to plug in network file | |
6364 | * system clients. If inotify turns out to be permanently | |
6365 | * incompatible for network fs clients, we could instead simply | |
6366 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6367 | */ | |
6d5786a3 | 6368 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6369 | const int notify_subdirs, const __u16 netfid, |
6370 | __u32 filter, struct file *pfile, int multishot, | |
6371 | const struct nls_table *nls_codepage) | |
6372 | { | |
6373 | int rc = 0; | |
6374 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6375 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6376 | struct dir_notify_req *dnotify_req; | |
6377 | int bytes_returned; | |
6378 | ||
f96637be | 6379 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6380 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6381 | (void **) &pSMBr); | |
6382 | if (rc) | |
6383 | return rc; | |
6384 | ||
6385 | pSMB->TotalParameterCount = 0 ; | |
6386 | pSMB->TotalDataCount = 0; | |
6387 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6388 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6389 | pSMB->MaxSetupCount = 4; |
6390 | pSMB->Reserved = 0; | |
6391 | pSMB->ParameterOffset = 0; | |
6392 | pSMB->DataCount = 0; | |
6393 | pSMB->DataOffset = 0; | |
6394 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6395 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6396 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6397 | if (notify_subdirs) | |
6398 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6399 | pSMB->Reserved2 = 0; | |
6400 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6401 | pSMB->Fid = netfid; /* file handle always le */ | |
6402 | pSMB->ByteCount = 0; | |
6403 | ||
6404 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6405 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6406 | CIFS_ASYNC_OP); | |
6407 | if (rc) { | |
f96637be | 6408 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6409 | } else { |
6410 | /* Add file to outstanding requests */ | |
6411 | /* BB change to kmem cache alloc */ | |
6412 | dnotify_req = kmalloc( | |
6413 | sizeof(struct dir_notify_req), | |
6414 | GFP_KERNEL); | |
6415 | if (dnotify_req) { | |
6416 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6417 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6418 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6419 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6420 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6421 | dnotify_req->netfid = netfid; | |
6422 | dnotify_req->pfile = pfile; | |
6423 | dnotify_req->filter = filter; | |
6424 | dnotify_req->multishot = multishot; | |
6425 | spin_lock(&GlobalMid_Lock); | |
6426 | list_add_tail(&dnotify_req->lhead, | |
6427 | &GlobalDnotifyReqList); | |
6428 | spin_unlock(&GlobalMid_Lock); | |
6429 | } else | |
6430 | rc = -ENOMEM; | |
6431 | } | |
6432 | cifs_buf_release(pSMB); | |
6433 | return rc; | |
6434 | } | |
6435 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |