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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 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) { |
2190eca1 | 618 | rc = decode_lanman_negprot_rsp(server, pSMBr, secFlags); |
9ddec561 | 619 | goto signing_check; |
790fe579 | 620 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
621 | /* unknown wct */ |
622 | rc = -EOPNOTSUPP; | |
623 | goto neg_err_exit; | |
624 | } | |
2190eca1 JL |
625 | /* else wct == 17, NTLM or better */ |
626 | ||
96daf2b0 SF |
627 | server->sec_mode = pSMBr->SecurityMode; |
628 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 629 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 630 | |
96daf2b0 | 631 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 632 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 633 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 634 | #endif /* CIFS_WEAK_PW_HASH */ |
f96637be | 635 | cifs_dbg(VFS, "Server requests plain text password but client support disabled\n"); |
9312f675 | 636 | |
790fe579 | 637 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 638 | server->secType = NTLMv2; |
790fe579 | 639 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 640 | server->secType = NTLM; |
790fe579 | 641 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 642 | server->secType = NTLMv2; |
a013689d SF |
643 | else if (secFlags & CIFSSEC_MAY_KRB5) |
644 | server->secType = Kerberos; | |
ac683924 | 645 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 646 | server->secType = RawNTLMSSP; |
a013689d SF |
647 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
648 | server->secType = LANMAN; | |
a013689d SF |
649 | else { |
650 | rc = -EOPNOTSUPP; | |
f96637be | 651 | cifs_dbg(VFS, "Invalid security type\n"); |
a013689d SF |
652 | goto neg_err_exit; |
653 | } | |
654 | /* else ... any others ...? */ | |
254e55ed SF |
655 | |
656 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
657 | little endian */ | |
10b9b98e PS |
658 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
659 | cifs_max_pending); | |
45275789 | 660 | set_credits(server, server->maxReq); |
254e55ed | 661 | /* probably no need to store and check maxvcs */ |
c974befa | 662 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 663 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 664 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 665 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
666 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
667 | server->timeAdj *= 60; | |
31d9e2bd JL |
668 | |
669 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) | |
d3ba50b1 | 670 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 671 | CIFS_CRYPTO_KEY_SIZE); |
31d9e2bd | 672 | else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
07cc6cf9 | 673 | server->capabilities & CAP_EXTENDED_SECURITY) && |
31d9e2bd JL |
674 | (pSMBr->EncryptionKeyLength == 0)) |
675 | rc = decode_ext_sec_blob(server, pSMBr); | |
676 | else if (server->sec_mode & SECMODE_PW_ENCRYPT) | |
07cc6cf9 | 677 | rc = -EIO; /* no crypt key only if plain text pwd */ |
31d9e2bd | 678 | else |
254e55ed SF |
679 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
680 | ||
681 | signing_check: | |
9ddec561 JL |
682 | if (!rc) |
683 | rc = cifs_enable_signing(server, secFlags); | |
50c2f753 | 684 | neg_err_exit: |
4a6d87f1 | 685 | cifs_buf_release(pSMB); |
254e55ed | 686 | |
f96637be | 687 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
688 | return rc; |
689 | } | |
690 | ||
691 | int | |
2e6e02ab | 692 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
693 | { |
694 | struct smb_hdr *smb_buffer; | |
1da177e4 | 695 | int rc = 0; |
1da177e4 | 696 | |
f96637be | 697 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 698 | |
f1987b44 JL |
699 | /* BB: do we need to check this? These should never be NULL. */ |
700 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
701 | return -EIO; | |
1da177e4 | 702 | |
f1987b44 JL |
703 | /* |
704 | * No need to return error on this operation if tid invalidated and | |
705 | * closed on server already e.g. due to tcp session crashing. Also, | |
706 | * the tcon is no longer on the list, so no need to take lock before | |
707 | * checking this. | |
708 | */ | |
268875b9 | 709 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 710 | return 0; |
1da177e4 | 711 | |
50c2f753 | 712 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 713 | (void **)&smb_buffer); |
f1987b44 | 714 | if (rc) |
1da177e4 | 715 | return rc; |
133672ef | 716 | |
792af7b0 | 717 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 718 | if (rc) |
f96637be | 719 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 720 | |
50c2f753 | 721 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 722 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
723 | if (rc == -EAGAIN) |
724 | rc = 0; | |
725 | ||
726 | return rc; | |
727 | } | |
728 | ||
766fdbb5 JL |
729 | /* |
730 | * This is a no-op for now. We're not really interested in the reply, but | |
731 | * rather in the fact that the server sent one and that server->lstrp | |
732 | * gets updated. | |
733 | * | |
734 | * FIXME: maybe we should consider checking that the reply matches request? | |
735 | */ | |
736 | static void | |
737 | cifs_echo_callback(struct mid_q_entry *mid) | |
738 | { | |
739 | struct TCP_Server_Info *server = mid->callback_data; | |
740 | ||
741 | DeleteMidQEntry(mid); | |
a891f0f8 | 742 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
743 | } |
744 | ||
745 | int | |
746 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
747 | { | |
748 | ECHO_REQ *smb; | |
749 | int rc = 0; | |
fcc31cb6 | 750 | struct kvec iov; |
fec344e3 JL |
751 | struct smb_rqst rqst = { .rq_iov = &iov, |
752 | .rq_nvec = 1 }; | |
766fdbb5 | 753 | |
f96637be | 754 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
755 | |
756 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
757 | if (rc) | |
758 | return rc; | |
759 | ||
760 | /* set up echo request */ | |
5443d130 | 761 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
762 | smb->hdr.WordCount = 1; |
763 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 764 | put_bcc(1, &smb->hdr); |
766fdbb5 | 765 | smb->Data[0] = 'a'; |
be8e3b00 | 766 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
767 | iov.iov_base = smb; |
768 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 769 | |
fec344e3 | 770 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f8 | 771 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 772 | if (rc) |
f96637be | 773 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
774 | |
775 | cifs_small_buf_release(smb); | |
776 | ||
777 | return rc; | |
778 | } | |
779 | ||
1da177e4 | 780 | int |
58c45c58 | 781 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 782 | { |
1da177e4 LT |
783 | LOGOFF_ANDX_REQ *pSMB; |
784 | int rc = 0; | |
1da177e4 | 785 | |
f96637be | 786 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 787 | |
14fbf50d JL |
788 | /* |
789 | * BB: do we need to check validity of ses and server? They should | |
790 | * always be valid since we have an active reference. If not, that | |
791 | * should probably be a BUG() | |
792 | */ | |
793 | if (!ses || !ses->server) | |
3b795210 SF |
794 | return -EIO; |
795 | ||
d7b619cf | 796 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
797 | if (ses->need_reconnect) |
798 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
799 | already closed due to reconnect */ | |
1da177e4 LT |
800 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
801 | if (rc) { | |
d7b619cf | 802 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
803 | return rc; |
804 | } | |
805 | ||
88257360 | 806 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 807 | |
96daf2b0 | 808 | if (ses->server->sec_mode & |
1da177e4 LT |
809 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
810 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
811 | |
812 | pSMB->hdr.Uid = ses->Suid; | |
813 | ||
814 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 815 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 816 | session_already_dead: |
d7b619cf | 817 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
818 | |
819 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 820 | since server closed smb session, no sense reporting |
1da177e4 LT |
821 | error */ |
822 | if (rc == -EAGAIN) | |
823 | rc = 0; | |
824 | return rc; | |
825 | } | |
826 | ||
2d785a50 | 827 | int |
6d5786a3 PS |
828 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
829 | const char *fileName, __u16 type, | |
830 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
831 | { |
832 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
833 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
834 | struct unlink_psx_rq *pRqD; | |
835 | int name_len; | |
836 | int rc = 0; | |
837 | int bytes_returned = 0; | |
838 | __u16 params, param_offset, offset, byte_count; | |
839 | ||
f96637be | 840 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
841 | PsxDelete: |
842 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
843 | (void **) &pSMBr); | |
844 | if (rc) | |
845 | return rc; | |
846 | ||
847 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
848 | name_len = | |
acbbb76a SF |
849 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
850 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
851 | name_len++; /* trailing null */ |
852 | name_len *= 2; | |
853 | } else { /* BB add path length overrun check */ | |
854 | name_len = strnlen(fileName, PATH_MAX); | |
855 | name_len++; /* trailing null */ | |
856 | strncpy(pSMB->FileName, fileName, name_len); | |
857 | } | |
858 | ||
859 | params = 6 + name_len; | |
860 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
861 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
862 | pSMB->MaxSetupCount = 0; | |
863 | pSMB->Reserved = 0; | |
864 | pSMB->Flags = 0; | |
865 | pSMB->Timeout = 0; | |
866 | pSMB->Reserved2 = 0; | |
867 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
868 | InformationLevel) - 4; | |
869 | offset = param_offset + params; | |
870 | ||
871 | /* Setup pointer to Request Data (inode type) */ | |
872 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
873 | pRqD->type = cpu_to_le16(type); | |
874 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
875 | pSMB->DataOffset = cpu_to_le16(offset); | |
876 | pSMB->SetupCount = 1; | |
877 | pSMB->Reserved3 = 0; | |
878 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
879 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
880 | ||
881 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
882 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
883 | pSMB->ParameterCount = cpu_to_le16(params); | |
884 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
885 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
886 | pSMB->Reserved4 = 0; | |
be8e3b00 | 887 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
888 | pSMB->ByteCount = cpu_to_le16(byte_count); |
889 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
890 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 891 | if (rc) |
f96637be | 892 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
893 | cifs_buf_release(pSMB); |
894 | ||
44c58186 | 895 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
896 | |
897 | if (rc == -EAGAIN) | |
898 | goto PsxDelete; | |
899 | ||
900 | return rc; | |
901 | } | |
902 | ||
1da177e4 | 903 | int |
ed6875e0 PS |
904 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
905 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
906 | { |
907 | DELETE_FILE_REQ *pSMB = NULL; | |
908 | DELETE_FILE_RSP *pSMBr = NULL; | |
909 | int rc = 0; | |
910 | int bytes_returned; | |
911 | int name_len; | |
ed6875e0 | 912 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 LT |
913 | |
914 | DelFileRetry: | |
915 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
916 | (void **) &pSMBr); | |
917 | if (rc) | |
918 | return rc; | |
919 | ||
920 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
921 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
922 | PATH_MAX, cifs_sb->local_nls, | |
923 | remap); | |
1da177e4 LT |
924 | name_len++; /* trailing null */ |
925 | name_len *= 2; | |
09d1db5c | 926 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 927 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 928 | name_len++; /* trailing null */ |
ed6875e0 | 929 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
930 | } |
931 | pSMB->SearchAttributes = | |
932 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
933 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 934 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
935 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
936 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
937 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 938 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 939 | if (rc) |
f96637be | 940 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
941 | |
942 | cifs_buf_release(pSMB); | |
943 | if (rc == -EAGAIN) | |
944 | goto DelFileRetry; | |
945 | ||
946 | return rc; | |
947 | } | |
948 | ||
949 | int | |
f958ca5d PS |
950 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
951 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
952 | { |
953 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
954 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
955 | int rc = 0; | |
956 | int bytes_returned; | |
957 | int name_len; | |
f958ca5d | 958 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 959 | |
f96637be | 960 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
961 | RmDirRetry: |
962 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
963 | (void **) &pSMBr); | |
964 | if (rc) | |
965 | return rc; | |
966 | ||
967 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
968 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
969 | PATH_MAX, cifs_sb->local_nls, | |
970 | remap); | |
1da177e4 LT |
971 | name_len++; /* trailing null */ |
972 | name_len *= 2; | |
09d1db5c | 973 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 974 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 975 | name_len++; /* trailing null */ |
f958ca5d | 976 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
977 | } |
978 | ||
979 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 980 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
981 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
982 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
983 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 984 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 985 | if (rc) |
f96637be | 986 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
987 | |
988 | cifs_buf_release(pSMB); | |
989 | if (rc == -EAGAIN) | |
990 | goto RmDirRetry; | |
991 | return rc; | |
992 | } | |
993 | ||
994 | int | |
f436720e PS |
995 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
996 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
997 | { |
998 | int rc = 0; | |
999 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
1000 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
1001 | int bytes_returned; | |
1002 | int name_len; | |
f436720e | 1003 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 1004 | |
f96637be | 1005 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
1006 | MkDirRetry: |
1007 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1008 | (void **) &pSMBr); | |
1009 | if (rc) | |
1010 | return rc; | |
1011 | ||
1012 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 1013 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
1014 | PATH_MAX, cifs_sb->local_nls, |
1015 | remap); | |
1da177e4 LT |
1016 | name_len++; /* trailing null */ |
1017 | name_len *= 2; | |
09d1db5c | 1018 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1019 | name_len = strnlen(name, PATH_MAX); |
1020 | name_len++; /* trailing null */ | |
1021 | strncpy(pSMB->DirName, name, name_len); | |
1022 | } | |
1023 | ||
1024 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1025 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1026 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1027 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1028 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1029 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1030 | if (rc) |
f96637be | 1031 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 1032 | |
1da177e4 LT |
1033 | cifs_buf_release(pSMB); |
1034 | if (rc == -EAGAIN) | |
1035 | goto MkDirRetry; | |
1036 | return rc; | |
1037 | } | |
1038 | ||
2dd29d31 | 1039 | int |
6d5786a3 PS |
1040 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1041 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1042 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1043 | const char *name, const struct nls_table *nls_codepage, | |
1044 | int remap) | |
2dd29d31 SF |
1045 | { |
1046 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1047 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1048 | int name_len; | |
1049 | int rc = 0; | |
1050 | int bytes_returned = 0; | |
2dd29d31 | 1051 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1052 | OPEN_PSX_REQ *pdata; |
1053 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1054 | |
f96637be | 1055 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1056 | PsxCreat: |
1057 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1058 | (void **) &pSMBr); | |
1059 | if (rc) | |
1060 | return rc; | |
1061 | ||
1062 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1063 | name_len = | |
acbbb76a SF |
1064 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1065 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1066 | name_len++; /* trailing null */ |
1067 | name_len *= 2; | |
1068 | } else { /* BB improve the check for buffer overruns BB */ | |
1069 | name_len = strnlen(name, PATH_MAX); | |
1070 | name_len++; /* trailing null */ | |
1071 | strncpy(pSMB->FileName, name, name_len); | |
1072 | } | |
1073 | ||
1074 | params = 6 + name_len; | |
1075 | count = sizeof(OPEN_PSX_REQ); | |
1076 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1077 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1078 | pSMB->MaxSetupCount = 0; | |
1079 | pSMB->Reserved = 0; | |
1080 | pSMB->Flags = 0; | |
1081 | pSMB->Timeout = 0; | |
1082 | pSMB->Reserved2 = 0; | |
1083 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1084 | InformationLevel) - 4; |
2dd29d31 | 1085 | offset = param_offset + params; |
2dd29d31 | 1086 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1087 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1088 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1089 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1090 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1091 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1092 | pSMB->DataOffset = cpu_to_le16(offset); | |
1093 | pSMB->SetupCount = 1; | |
1094 | pSMB->Reserved3 = 0; | |
1095 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1096 | byte_count = 3 /* pad */ + params + count; | |
1097 | ||
1098 | pSMB->DataCount = cpu_to_le16(count); | |
1099 | pSMB->ParameterCount = cpu_to_le16(params); | |
1100 | pSMB->TotalDataCount = pSMB->DataCount; | |
1101 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1102 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1103 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1104 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1105 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1106 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1107 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1108 | if (rc) { | |
f96637be | 1109 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1110 | goto psx_create_err; |
1111 | } | |
1112 | ||
f96637be | 1113 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1114 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1115 | ||
820a803f | 1116 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1117 | rc = -EIO; /* bad smb */ |
1118 | goto psx_create_err; | |
1119 | } | |
1120 | ||
1121 | /* copy return information to pRetData */ | |
50c2f753 | 1122 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1123 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1124 | |
2dd29d31 | 1125 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1126 | if (netfid) |
2dd29d31 SF |
1127 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1128 | /* Let caller know file was created so we can set the mode. */ | |
1129 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1130 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1131 | *pOplock |= CIFS_CREATE_ACTION; |
1132 | /* check to make sure response data is there */ | |
8f2376ad CG |
1133 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1134 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1135 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1136 | } else { |
820a803f | 1137 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1138 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1139 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1140 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1141 | goto psx_create_err; |
1142 | } | |
50c2f753 | 1143 | memcpy((char *) pRetData, |
cbac3cba | 1144 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1145 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1146 | } |
2dd29d31 SF |
1147 | |
1148 | psx_create_err: | |
1149 | cifs_buf_release(pSMB); | |
1150 | ||
65bc98b0 | 1151 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1152 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1153 | else |
44c58186 | 1154 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1155 | |
1156 | if (rc == -EAGAIN) | |
1157 | goto PsxCreat; | |
1158 | ||
50c2f753 | 1159 | return rc; |
2dd29d31 SF |
1160 | } |
1161 | ||
a9d02ad4 SF |
1162 | static __u16 convert_disposition(int disposition) |
1163 | { | |
1164 | __u16 ofun = 0; | |
1165 | ||
1166 | switch (disposition) { | |
1167 | case FILE_SUPERSEDE: | |
1168 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1169 | break; | |
1170 | case FILE_OPEN: | |
1171 | ofun = SMBOPEN_OAPPEND; | |
1172 | break; | |
1173 | case FILE_CREATE: | |
1174 | ofun = SMBOPEN_OCREATE; | |
1175 | break; | |
1176 | case FILE_OPEN_IF: | |
1177 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1178 | break; | |
1179 | case FILE_OVERWRITE: | |
1180 | ofun = SMBOPEN_OTRUNC; | |
1181 | break; | |
1182 | case FILE_OVERWRITE_IF: | |
1183 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1184 | break; | |
1185 | default: | |
f96637be | 1186 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1187 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1188 | } | |
1189 | return ofun; | |
1190 | } | |
1191 | ||
35fc37d5 JL |
1192 | static int |
1193 | access_flags_to_smbopen_mode(const int access_flags) | |
1194 | { | |
1195 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1196 | ||
1197 | if (masked_flags == GENERIC_READ) | |
1198 | return SMBOPEN_READ; | |
1199 | else if (masked_flags == GENERIC_WRITE) | |
1200 | return SMBOPEN_WRITE; | |
1201 | ||
1202 | /* just go for read/write */ | |
1203 | return SMBOPEN_READWRITE; | |
1204 | } | |
1205 | ||
a9d02ad4 | 1206 | int |
6d5786a3 | 1207 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1208 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1209 | const int access_flags, const int create_options, __u16 *netfid, |
1210 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1211 | const struct nls_table *nls_codepage, int remap) |
1212 | { | |
1213 | int rc = -EACCES; | |
1214 | OPENX_REQ *pSMB = NULL; | |
1215 | OPENX_RSP *pSMBr = NULL; | |
1216 | int bytes_returned; | |
1217 | int name_len; | |
1218 | __u16 count; | |
1219 | ||
1220 | OldOpenRetry: | |
1221 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1222 | (void **) &pSMBr); | |
1223 | if (rc) | |
1224 | return rc; | |
1225 | ||
1226 | pSMB->AndXCommand = 0xFF; /* none */ | |
1227 | ||
1228 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1229 | count = 1; /* account for one byte pad to word boundary */ | |
1230 | name_len = | |
acbbb76a SF |
1231 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1232 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1233 | name_len++; /* trailing null */ |
1234 | name_len *= 2; | |
1235 | } else { /* BB improve check for buffer overruns BB */ | |
1236 | count = 0; /* no pad */ | |
1237 | name_len = strnlen(fileName, PATH_MAX); | |
1238 | name_len++; /* trailing null */ | |
1239 | strncpy(pSMB->fileName, fileName, name_len); | |
1240 | } | |
1241 | if (*pOplock & REQ_OPLOCK) | |
1242 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1243 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1244 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1245 | |
a9d02ad4 | 1246 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1247 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1248 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1249 | /* set file as system file if special file such | |
1250 | as fifo and server expecting SFU style and | |
1251 | no Unix extensions */ | |
1252 | ||
790fe579 SF |
1253 | if (create_options & CREATE_OPTION_SPECIAL) |
1254 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1255 | else /* BB FIXME BB */ |
1256 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1257 | |
67750fb9 JL |
1258 | if (create_options & CREATE_OPTION_READONLY) |
1259 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1260 | |
1261 | /* BB FIXME BB */ | |
50c2f753 SF |
1262 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1263 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1264 | /* BB FIXME END BB */ |
3e87d803 SF |
1265 | |
1266 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1267 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1268 | count += name_len; |
be8e3b00 | 1269 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1270 | |
1271 | pSMB->ByteCount = cpu_to_le16(count); | |
1272 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1273 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1274 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1275 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1276 | if (rc) { |
f96637be | 1277 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1278 | } else { |
1279 | /* BB verify if wct == 15 */ | |
1280 | ||
582d21e5 | 1281 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1282 | |
1283 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1284 | /* Let caller know file was created so we can set the mode. */ | |
1285 | /* Do we care about the CreateAction in any other cases? */ | |
1286 | /* BB FIXME BB */ | |
790fe579 | 1287 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1288 | *pOplock |= CIFS_CREATE_ACTION; */ |
1289 | /* BB FIXME END */ | |
1290 | ||
790fe579 | 1291 | if (pfile_info) { |
a9d02ad4 SF |
1292 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1293 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1294 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1295 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1296 | pfile_info->Attributes = |
50c2f753 | 1297 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1298 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1299 | pfile_info->AllocationSize = |
1300 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1301 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1302 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1303 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1304 | } |
1305 | } | |
1306 | ||
1307 | cifs_buf_release(pSMB); | |
1308 | if (rc == -EAGAIN) | |
1309 | goto OldOpenRetry; | |
1310 | return rc; | |
1311 | } | |
1312 | ||
1da177e4 | 1313 | int |
6d5786a3 | 1314 | CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 1315 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1316 | const int access_flags, const int create_options, __u16 *netfid, |
1317 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1318 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1319 | { |
1320 | int rc = -EACCES; | |
1321 | OPEN_REQ *pSMB = NULL; | |
1322 | OPEN_RSP *pSMBr = NULL; | |
1323 | int bytes_returned; | |
1324 | int name_len; | |
1325 | __u16 count; | |
1326 | ||
1327 | openRetry: | |
1328 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1329 | (void **) &pSMBr); | |
1330 | if (rc) | |
1331 | return rc; | |
1332 | ||
1333 | pSMB->AndXCommand = 0xFF; /* none */ | |
1334 | ||
1335 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1336 | count = 1; /* account for one byte pad to word boundary */ | |
1337 | name_len = | |
acbbb76a SF |
1338 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1339 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1340 | name_len++; /* trailing null */ |
1341 | name_len *= 2; | |
1342 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1343 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1344 | count = 0; /* no pad */ |
1345 | name_len = strnlen(fileName, PATH_MAX); | |
1346 | name_len++; /* trailing null */ | |
1347 | pSMB->NameLength = cpu_to_le16(name_len); | |
1348 | strncpy(pSMB->fileName, fileName, name_len); | |
1349 | } | |
1350 | if (*pOplock & REQ_OPLOCK) | |
1351 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1352 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1353 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1354 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1355 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1356 | /* set file as system file if special file such |
1357 | as fifo and server expecting SFU style and | |
1358 | no Unix extensions */ | |
790fe579 | 1359 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1360 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1361 | else | |
1362 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1363 | |
1da177e4 LT |
1364 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1365 | /* but it helps speed up case sensitive checks for other | |
1366 | servers such as Samba */ | |
1367 | if (tcon->ses->capabilities & CAP_UNIX) | |
1368 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1369 | ||
67750fb9 JL |
1370 | if (create_options & CREATE_OPTION_READONLY) |
1371 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1372 | ||
1da177e4 LT |
1373 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1374 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1375 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1376 | /* BB Expirement with various impersonation levels and verify */ |
1377 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1378 | pSMB->SecurityFlags = |
1379 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1380 | ||
1381 | count += name_len; | |
be8e3b00 | 1382 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1383 | |
1384 | pSMB->ByteCount = cpu_to_le16(count); | |
1385 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1386 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1387 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1388 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1389 | if (rc) { |
f96637be | 1390 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
1da177e4 | 1391 | } else { |
09d1db5c | 1392 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1393 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1394 | /* Let caller know file was created so we can set the mode. */ | |
1395 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1396 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1397 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1398 | if (pfile_info) { |
61e74801 SF |
1399 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1400 | 36 /* CreationTime to Attributes */); | |
1401 | /* the file_info buf is endian converted by caller */ | |
1402 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1403 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1404 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1405 | pfile_info->DeletePending = 0; | |
1da177e4 | 1406 | } |
1da177e4 | 1407 | } |
a5a2b489 | 1408 | |
1da177e4 LT |
1409 | cifs_buf_release(pSMB); |
1410 | if (rc == -EAGAIN) | |
1411 | goto openRetry; | |
1412 | return rc; | |
1413 | } | |
1414 | ||
e28bc5b1 JL |
1415 | /* |
1416 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1417 | * current bigbuf. | |
1418 | */ | |
1419 | static int | |
1420 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1421 | { | |
5ffef7bf | 1422 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1423 | int remaining = rfclen + 4 - server->total_read; |
1424 | struct cifs_readdata *rdata = mid->callback_data; | |
1425 | ||
1426 | while (remaining > 0) { | |
1427 | int length; | |
1428 | ||
1429 | length = cifs_read_from_socket(server, server->bigbuf, | |
1430 | min_t(unsigned int, remaining, | |
1887f601 | 1431 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1432 | if (length < 0) |
1433 | return length; | |
1434 | server->total_read += length; | |
1435 | remaining -= length; | |
1436 | } | |
1437 | ||
1438 | dequeue_mid(mid, rdata->result); | |
1439 | return 0; | |
1440 | } | |
1441 | ||
09a4707e | 1442 | int |
e28bc5b1 JL |
1443 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1444 | { | |
1445 | int length, len; | |
8d5ce4d2 | 1446 | unsigned int data_offset, data_len; |
e28bc5b1 | 1447 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1448 | char *buf = server->smallbuf; |
1449 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1450 | |
f96637be JP |
1451 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1452 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1453 | |
1454 | /* | |
1455 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1456 | * can if there's not enough data. At this point, we've read down to | |
1457 | * the Mid. | |
1458 | */ | |
eb378711 | 1459 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1460 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1461 | |
5819575e JL |
1462 | rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1; |
1463 | rdata->iov.iov_len = len; | |
e28bc5b1 | 1464 | |
5819575e | 1465 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); |
e28bc5b1 JL |
1466 | if (length < 0) |
1467 | return length; | |
1468 | server->total_read += length; | |
1469 | ||
1470 | /* Was the SMB read successful? */ | |
eb378711 | 1471 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1472 | if (rdata->result != 0) { |
f96637be JP |
1473 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1474 | __func__, rdata->result); | |
e28bc5b1 JL |
1475 | return cifs_readv_discard(server, mid); |
1476 | } | |
1477 | ||
1478 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1479 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1480 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1481 | __func__, server->total_read, | |
1482 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1483 | rdata->result = -EIO; |
1484 | return cifs_readv_discard(server, mid); | |
1485 | } | |
1486 | ||
eb378711 | 1487 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1488 | if (data_offset < server->total_read) { |
1489 | /* | |
1490 | * win2k8 sometimes sends an offset of 0 when the read | |
1491 | * is beyond the EOF. Treat it as if the data starts just after | |
1492 | * the header. | |
1493 | */ | |
f96637be JP |
1494 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1495 | __func__, data_offset); | |
e28bc5b1 JL |
1496 | data_offset = server->total_read; |
1497 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1498 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1499 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1500 | __func__, data_offset); | |
e28bc5b1 JL |
1501 | rdata->result = -EIO; |
1502 | return cifs_readv_discard(server, mid); | |
1503 | } | |
1504 | ||
f96637be JP |
1505 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1506 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1507 | |
1508 | len = data_offset - server->total_read; | |
1509 | if (len > 0) { | |
1510 | /* read any junk before data into the rest of smallbuf */ | |
5819575e JL |
1511 | rdata->iov.iov_base = buf + server->total_read; |
1512 | rdata->iov.iov_len = len; | |
1513 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); | |
e28bc5b1 JL |
1514 | if (length < 0) |
1515 | return length; | |
1516 | server->total_read += length; | |
1517 | } | |
1518 | ||
1519 | /* set up first iov for signature check */ | |
5819575e JL |
1520 | rdata->iov.iov_base = buf; |
1521 | rdata->iov.iov_len = server->total_read; | |
f96637be JP |
1522 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1523 | rdata->iov.iov_base, rdata->iov.iov_len); | |
e28bc5b1 JL |
1524 | |
1525 | /* how much data is in the response? */ | |
eb378711 | 1526 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1527 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1528 | /* data_len is corrupt -- discard frame */ |
1529 | rdata->result = -EIO; | |
1530 | return cifs_readv_discard(server, mid); | |
1531 | } | |
1532 | ||
8321fec4 JL |
1533 | length = rdata->read_into_pages(server, rdata, data_len); |
1534 | if (length < 0) | |
1535 | return length; | |
e28bc5b1 | 1536 | |
8321fec4 | 1537 | server->total_read += length; |
e28bc5b1 JL |
1538 | rdata->bytes = length; |
1539 | ||
f96637be JP |
1540 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1541 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1542 | |
1543 | /* discard anything left over */ | |
5ffef7bf | 1544 | if (server->total_read < buflen) |
e28bc5b1 JL |
1545 | return cifs_readv_discard(server, mid); |
1546 | ||
1547 | dequeue_mid(mid, false); | |
1548 | return length; | |
1549 | } | |
1550 | ||
e28bc5b1 JL |
1551 | static void |
1552 | cifs_readv_callback(struct mid_q_entry *mid) | |
1553 | { | |
1554 | struct cifs_readdata *rdata = mid->callback_data; | |
1555 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1556 | struct TCP_Server_Info *server = tcon->ses->server; | |
5819575e JL |
1557 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
1558 | .rq_nvec = 1, | |
8321fec4 JL |
1559 | .rq_pages = rdata->pages, |
1560 | .rq_npages = rdata->nr_pages, | |
1561 | .rq_pagesz = rdata->pagesz, | |
1562 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1563 | |
f96637be JP |
1564 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1565 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1566 | rdata->bytes); | |
e28bc5b1 | 1567 | |
7c9421e1 | 1568 | switch (mid->mid_state) { |
e28bc5b1 JL |
1569 | case MID_RESPONSE_RECEIVED: |
1570 | /* result already set, check signature */ | |
1571 | if (server->sec_mode & | |
1572 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { | |
985e4ff0 SF |
1573 | int rc = 0; |
1574 | ||
bf5ea0e2 | 1575 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1576 | mid->sequence_number); |
985e4ff0 | 1577 | if (rc) |
f96637be JP |
1578 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1579 | rc); | |
e28bc5b1 JL |
1580 | } |
1581 | /* FIXME: should this be counted toward the initiating task? */ | |
1582 | task_io_account_read(rdata->bytes); | |
1583 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1584 | break; | |
1585 | case MID_REQUEST_SUBMITTED: | |
1586 | case MID_RETRY_NEEDED: | |
1587 | rdata->result = -EAGAIN; | |
1588 | break; | |
1589 | default: | |
1590 | rdata->result = -EIO; | |
1591 | } | |
1592 | ||
da472fc8 | 1593 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1594 | DeleteMidQEntry(mid); |
a891f0f8 | 1595 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1596 | } |
1597 | ||
1598 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1599 | int | |
1600 | cifs_async_readv(struct cifs_readdata *rdata) | |
1601 | { | |
1602 | int rc; | |
1603 | READ_REQ *smb = NULL; | |
1604 | int wct; | |
1605 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
5819575e | 1606 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3 | 1607 | .rq_nvec = 1 }; |
e28bc5b1 | 1608 | |
f96637be JP |
1609 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1610 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1611 | |
1612 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1613 | wct = 12; | |
1614 | else { | |
1615 | wct = 10; /* old style read */ | |
1616 | if ((rdata->offset >> 32) > 0) { | |
1617 | /* can not handle this big offset for old */ | |
1618 | return -EIO; | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1623 | if (rc) | |
1624 | return rc; | |
1625 | ||
1626 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1627 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1628 | ||
1629 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1630 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1631 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1632 | if (wct == 12) | |
1633 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1634 | smb->Remaining = 0; | |
1635 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1636 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1637 | if (wct == 12) | |
1638 | smb->ByteCount = 0; | |
1639 | else { | |
1640 | /* old style read */ | |
1641 | struct smb_com_readx_req *smbr = | |
1642 | (struct smb_com_readx_req *)smb; | |
1643 | smbr->ByteCount = 0; | |
1644 | } | |
1645 | ||
1646 | /* 4 for RFC1001 length + 1 for BCC */ | |
5819575e JL |
1647 | rdata->iov.iov_base = smb; |
1648 | rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
e28bc5b1 | 1649 | |
6993f74a | 1650 | kref_get(&rdata->refcount); |
fec344e3 JL |
1651 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
1652 | cifs_readv_callback, rdata, 0); | |
e28bc5b1 JL |
1653 | |
1654 | if (rc == 0) | |
44c58186 | 1655 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1656 | else |
1657 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1658 | |
1659 | cifs_small_buf_release(smb); | |
1660 | return rc; | |
1661 | } | |
1662 | ||
1da177e4 | 1663 | int |
6d5786a3 PS |
1664 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1665 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1666 | { |
1667 | int rc = -EACCES; | |
1668 | READ_REQ *pSMB = NULL; | |
1669 | READ_RSP *pSMBr = NULL; | |
1670 | char *pReadData = NULL; | |
bfa0d75a | 1671 | int wct; |
ec637e3f SF |
1672 | int resp_buf_type = 0; |
1673 | struct kvec iov[1]; | |
d4ffff1f PS |
1674 | __u32 pid = io_parms->pid; |
1675 | __u16 netfid = io_parms->netfid; | |
1676 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1677 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1678 | unsigned int count = io_parms->length; |
1da177e4 | 1679 | |
f96637be | 1680 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1681 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1682 | wct = 12; |
4c3130ef | 1683 | else { |
bfa0d75a | 1684 | wct = 10; /* old style read */ |
d4ffff1f | 1685 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1686 | /* can not handle this big offset for old */ |
1687 | return -EIO; | |
1688 | } | |
1689 | } | |
1da177e4 LT |
1690 | |
1691 | *nbytes = 0; | |
ec637e3f | 1692 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1693 | if (rc) |
1694 | return rc; | |
1695 | ||
d4ffff1f PS |
1696 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1697 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1698 | ||
1da177e4 LT |
1699 | /* tcon and ses pointer are checked in smb_init */ |
1700 | if (tcon->ses->server == NULL) | |
1701 | return -ECONNABORTED; | |
1702 | ||
ec637e3f | 1703 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1704 | pSMB->Fid = netfid; |
d4ffff1f | 1705 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1706 | if (wct == 12) |
d4ffff1f | 1707 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1708 | |
1da177e4 LT |
1709 | pSMB->Remaining = 0; |
1710 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1711 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1712 | if (wct == 12) |
bfa0d75a SF |
1713 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1714 | else { | |
1715 | /* old style read */ | |
50c2f753 | 1716 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1717 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1718 | pSMBW->ByteCount = 0; |
bfa0d75a | 1719 | } |
ec637e3f SF |
1720 | |
1721 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1722 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1723 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1724 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1725 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1726 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1727 | if (rc) { |
f96637be | 1728 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1729 | } else { |
1730 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1731 | data_length = data_length << 16; | |
1732 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1733 | *nbytes = data_length; | |
1734 | ||
1735 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1736 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1737 | || (data_length > count)) { |
f96637be | 1738 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1739 | data_length, count); |
1da177e4 LT |
1740 | rc = -EIO; |
1741 | *nbytes = 0; | |
1742 | } else { | |
ec637e3f | 1743 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1744 | le16_to_cpu(pSMBr->DataOffset); |
1745 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1746 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1747 | rc = -EFAULT; |
26f57364 | 1748 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1749 | if (*buf) |
50c2f753 | 1750 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1751 | } |
1752 | } | |
1da177e4 | 1753 | |
4b8f930f | 1754 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1755 | if (*buf) { |
1756 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1757 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1758 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1759 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1760 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1761 | /* return buffer to caller to free */ |
1762 | *buf = iov[0].iov_base; | |
790fe579 | 1763 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1764 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1765 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1766 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1767 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1768 | |
1769 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1770 | since file handle passed in no longer valid */ |
1771 | return rc; | |
1772 | } | |
1773 | ||
ec637e3f | 1774 | |
1da177e4 | 1775 | int |
6d5786a3 | 1776 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 | 1777 | unsigned int *nbytes, const char *buf, |
50c2f753 | 1778 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1779 | { |
1780 | int rc = -EACCES; | |
1781 | WRITE_REQ *pSMB = NULL; | |
1782 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1783 | int bytes_returned, wct; |
1da177e4 LT |
1784 | __u32 bytes_sent; |
1785 | __u16 byte_count; | |
fa2989f4 PS |
1786 | __u32 pid = io_parms->pid; |
1787 | __u16 netfid = io_parms->netfid; | |
1788 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1789 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1790 | unsigned int count = io_parms->length; |
1da177e4 | 1791 | |
a24e2d7d SF |
1792 | *nbytes = 0; |
1793 | ||
f96637be | 1794 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1795 | if (tcon->ses == NULL) |
1c955187 SF |
1796 | return -ECONNABORTED; |
1797 | ||
790fe579 | 1798 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1799 | wct = 14; |
4c3130ef | 1800 | else { |
1c955187 | 1801 | wct = 12; |
4c3130ef SF |
1802 | if ((offset >> 32) > 0) { |
1803 | /* can not handle big offset for old srv */ | |
1804 | return -EIO; | |
1805 | } | |
1806 | } | |
1c955187 SF |
1807 | |
1808 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1809 | (void **) &pSMBr); |
1810 | if (rc) | |
1811 | return rc; | |
fa2989f4 PS |
1812 | |
1813 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1814 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1815 | ||
1da177e4 LT |
1816 | /* tcon and ses pointer are checked in smb_init */ |
1817 | if (tcon->ses->server == NULL) | |
1818 | return -ECONNABORTED; | |
1819 | ||
1820 | pSMB->AndXCommand = 0xFF; /* none */ | |
1821 | pSMB->Fid = netfid; | |
1822 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1823 | if (wct == 14) |
1c955187 | 1824 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1825 | |
1da177e4 LT |
1826 | pSMB->Reserved = 0xFFFFFFFF; |
1827 | pSMB->WriteMode = 0; | |
1828 | pSMB->Remaining = 0; | |
1829 | ||
50c2f753 | 1830 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1831 | can send more if LARGE_WRITE_X capability returned by the server and if |
1832 | our buffer is big enough or if we convert to iovecs on socket writes | |
1833 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1834 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1835 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1836 | } else { | |
1837 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1838 | & ~0xFF; | |
1839 | } | |
1840 | ||
1841 | if (bytes_sent > count) | |
1842 | bytes_sent = count; | |
1843 | pSMB->DataOffset = | |
50c2f753 | 1844 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1845 | if (buf) |
61e74801 | 1846 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1847 | else if (ubuf) { |
1848 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1849 | cifs_buf_release(pSMB); |
1850 | return -EFAULT; | |
1851 | } | |
e30dcf3a | 1852 | } else if (count != 0) { |
1da177e4 LT |
1853 | /* No buffer */ |
1854 | cifs_buf_release(pSMB); | |
1855 | return -EINVAL; | |
e30dcf3a | 1856 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1857 | if (wct == 14) |
e30dcf3a | 1858 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1859 | else /* wct == 12 */ |
e30dcf3a | 1860 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1861 | |
1da177e4 LT |
1862 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1863 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1864 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1865 | |
790fe579 | 1866 | if (wct == 14) |
1c955187 | 1867 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1868 | else { /* old style write has byte count 4 bytes earlier |
1869 | so 4 bytes pad */ | |
1870 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1871 | (struct smb_com_writex_req *)pSMB; |
1872 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1873 | } | |
1da177e4 LT |
1874 | |
1875 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1876 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
44c58186 | 1877 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1878 | if (rc) { |
f96637be | 1879 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1880 | } else { |
1881 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1882 | *nbytes = (*nbytes) << 16; | |
1883 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1884 | |
1885 | /* | |
1886 | * Mask off high 16 bits when bytes written as returned by the | |
1887 | * server is greater than bytes requested by the client. Some | |
1888 | * OS/2 servers are known to set incorrect CountHigh values. | |
1889 | */ | |
1890 | if (*nbytes > count) | |
1891 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1892 | } |
1893 | ||
1894 | cifs_buf_release(pSMB); | |
1895 | ||
50c2f753 | 1896 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1897 | since file handle passed in no longer valid */ |
1898 | ||
1899 | return rc; | |
1900 | } | |
1901 | ||
c28c89fc JL |
1902 | void |
1903 | cifs_writedata_release(struct kref *refcount) | |
1904 | { | |
1905 | struct cifs_writedata *wdata = container_of(refcount, | |
1906 | struct cifs_writedata, refcount); | |
1907 | ||
1908 | if (wdata->cfile) | |
1909 | cifsFileInfo_put(wdata->cfile); | |
1910 | ||
1911 | kfree(wdata); | |
1912 | } | |
1913 | ||
1914 | /* | |
1915 | * Write failed with a retryable error. Resend the write request. It's also | |
1916 | * possible that the page was redirtied so re-clean the page. | |
1917 | */ | |
1918 | static void | |
1919 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1920 | { | |
1921 | int i, rc; | |
1922 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
c9de5c80 | 1923 | struct TCP_Server_Info *server; |
c28c89fc JL |
1924 | |
1925 | for (i = 0; i < wdata->nr_pages; i++) { | |
1926 | lock_page(wdata->pages[i]); | |
1927 | clear_page_dirty_for_io(wdata->pages[i]); | |
1928 | } | |
1929 | ||
1930 | do { | |
c9de5c80 PS |
1931 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1932 | rc = server->ops->async_writev(wdata); | |
c28c89fc JL |
1933 | } while (rc == -EAGAIN); |
1934 | ||
1935 | for (i = 0; i < wdata->nr_pages; i++) { | |
94e18007 | 1936 | unlock_page(wdata->pages[i]); |
c51bb0ea | 1937 | if (rc != 0) { |
c28c89fc | 1938 | SetPageError(wdata->pages[i]); |
c51bb0ea OM |
1939 | end_page_writeback(wdata->pages[i]); |
1940 | page_cache_release(wdata->pages[i]); | |
1941 | } | |
c28c89fc JL |
1942 | } |
1943 | ||
1944 | mapping_set_error(inode->i_mapping, rc); | |
1945 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1946 | } | |
1947 | ||
c2e87640 | 1948 | void |
c28c89fc JL |
1949 | cifs_writev_complete(struct work_struct *work) |
1950 | { | |
1951 | struct cifs_writedata *wdata = container_of(work, | |
1952 | struct cifs_writedata, work); | |
1953 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1954 | int i = 0; | |
1955 | ||
1956 | if (wdata->result == 0) { | |
597b027f | 1957 | spin_lock(&inode->i_lock); |
c28c89fc | 1958 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1959 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1960 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1961 | wdata->bytes); | |
1962 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1963 | return cifs_writev_requeue(wdata); | |
1964 | ||
1965 | for (i = 0; i < wdata->nr_pages; i++) { | |
1966 | struct page *page = wdata->pages[i]; | |
1967 | if (wdata->result == -EAGAIN) | |
1968 | __set_page_dirty_nobuffers(page); | |
1969 | else if (wdata->result < 0) | |
1970 | SetPageError(page); | |
1971 | end_page_writeback(page); | |
1972 | page_cache_release(page); | |
1973 | } | |
1974 | if (wdata->result != -EAGAIN) | |
1975 | mapping_set_error(inode->i_mapping, wdata->result); | |
1976 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1977 | } | |
1978 | ||
1979 | struct cifs_writedata * | |
c2e87640 | 1980 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1981 | { |
1982 | struct cifs_writedata *wdata; | |
1983 | ||
1984 | /* this would overflow */ | |
1985 | if (nr_pages == 0) { | |
f96637be | 1986 | cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__); |
c28c89fc JL |
1987 | return NULL; |
1988 | } | |
1989 | ||
1990 | /* writedata + number of page pointers */ | |
1991 | wdata = kzalloc(sizeof(*wdata) + | |
1992 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1993 | if (wdata != NULL) { | |
c28c89fc | 1994 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1995 | INIT_LIST_HEAD(&wdata->list); |
1996 | init_completion(&wdata->done); | |
1997 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1998 | } |
1999 | return wdata; | |
2000 | } | |
2001 | ||
2002 | /* | |
7c9421e1 | 2003 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2004 | * workqueue completion task. |
2005 | */ | |
2006 | static void | |
2007 | cifs_writev_callback(struct mid_q_entry *mid) | |
2008 | { | |
2009 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2010 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2011 | unsigned int written; |
2012 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2013 | ||
7c9421e1 | 2014 | switch (mid->mid_state) { |
c28c89fc JL |
2015 | case MID_RESPONSE_RECEIVED: |
2016 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2017 | if (wdata->result != 0) | |
2018 | break; | |
2019 | ||
2020 | written = le16_to_cpu(smb->CountHigh); | |
2021 | written <<= 16; | |
2022 | written += le16_to_cpu(smb->Count); | |
2023 | /* | |
2024 | * Mask off high 16 bits when bytes written as returned | |
2025 | * by the server is greater than bytes requested by the | |
2026 | * client. OS/2 servers are known to set incorrect | |
2027 | * CountHigh values. | |
2028 | */ | |
2029 | if (written > wdata->bytes) | |
2030 | written &= 0xFFFF; | |
2031 | ||
2032 | if (written < wdata->bytes) | |
2033 | wdata->result = -ENOSPC; | |
2034 | else | |
2035 | wdata->bytes = written; | |
2036 | break; | |
2037 | case MID_REQUEST_SUBMITTED: | |
2038 | case MID_RETRY_NEEDED: | |
2039 | wdata->result = -EAGAIN; | |
2040 | break; | |
2041 | default: | |
2042 | wdata->result = -EIO; | |
2043 | break; | |
2044 | } | |
2045 | ||
da472fc8 | 2046 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2047 | DeleteMidQEntry(mid); |
a891f0f8 | 2048 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2049 | } |
2050 | ||
2051 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2052 | int | |
2053 | cifs_async_writev(struct cifs_writedata *wdata) | |
2054 | { | |
eddb079d | 2055 | int rc = -EACCES; |
c28c89fc JL |
2056 | WRITE_REQ *smb = NULL; |
2057 | int wct; | |
96daf2b0 | 2058 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079d | 2059 | struct kvec iov; |
fec344e3 | 2060 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2061 | |
2062 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2063 | wct = 14; | |
2064 | } else { | |
2065 | wct = 12; | |
2066 | if (wdata->offset >> 32 > 0) { | |
2067 | /* can not handle big offset for old srv */ | |
2068 | return -EIO; | |
2069 | } | |
2070 | } | |
2071 | ||
2072 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2073 | if (rc) | |
2074 | goto async_writev_out; | |
2075 | ||
fe5f5d2e JL |
2076 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2077 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2078 | |
c28c89fc | 2079 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2080 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2081 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2082 | if (wct == 14) | |
2083 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2084 | smb->Reserved = 0xFFFFFFFF; | |
2085 | smb->WriteMode = 0; | |
2086 | smb->Remaining = 0; | |
2087 | ||
2088 | smb->DataOffset = | |
2089 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2090 | ||
2091 | /* 4 for RFC1001 length + 1 for BCC */ | |
eddb079d JL |
2092 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; |
2093 | iov.iov_base = smb; | |
c28c89fc | 2094 | |
eddb079d JL |
2095 | rqst.rq_iov = &iov; |
2096 | rqst.rq_nvec = 1; | |
2097 | rqst.rq_pages = wdata->pages; | |
2098 | rqst.rq_npages = wdata->nr_pages; | |
2099 | rqst.rq_pagesz = wdata->pagesz; | |
2100 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2101 | |
f96637be JP |
2102 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2103 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2104 | |
2105 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2106 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2107 | ||
2108 | if (wct == 14) { | |
2109 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2110 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2111 | } else { | |
2112 | /* wct == 12 */ | |
2113 | struct smb_com_writex_req *smbw = | |
2114 | (struct smb_com_writex_req *)smb; | |
2115 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2116 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
eddb079d | 2117 | iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2118 | } |
2119 | ||
2120 | kref_get(&wdata->refcount); | |
fec344e3 JL |
2121 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
2122 | cifs_writev_callback, wdata, 0); | |
c28c89fc JL |
2123 | |
2124 | if (rc == 0) | |
44c58186 | 2125 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc JL |
2126 | else |
2127 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2128 | ||
c28c89fc JL |
2129 | async_writev_out: |
2130 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2131 | return rc; |
2132 | } | |
2133 | ||
d6e04ae6 | 2134 | int |
6d5786a3 | 2135 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2136 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2137 | { |
2138 | int rc = -EACCES; | |
2139 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2140 | int wct; |
d6e04ae6 | 2141 | int smb_hdr_len; |
ec637e3f | 2142 | int resp_buf_type = 0; |
fa2989f4 PS |
2143 | __u32 pid = io_parms->pid; |
2144 | __u16 netfid = io_parms->netfid; | |
2145 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2146 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2147 | unsigned int count = io_parms->length; |
1da177e4 | 2148 | |
fbec9ab9 JL |
2149 | *nbytes = 0; |
2150 | ||
f96637be | 2151 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2152 | |
4c3130ef | 2153 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2154 | wct = 14; |
4c3130ef | 2155 | } else { |
8cc64c6e | 2156 | wct = 12; |
4c3130ef SF |
2157 | if ((offset >> 32) > 0) { |
2158 | /* can not handle big offset for old srv */ | |
2159 | return -EIO; | |
2160 | } | |
2161 | } | |
8cc64c6e | 2162 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2163 | if (rc) |
2164 | return rc; | |
fa2989f4 PS |
2165 | |
2166 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2167 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2168 | ||
1da177e4 LT |
2169 | /* tcon and ses pointer are checked in smb_init */ |
2170 | if (tcon->ses->server == NULL) | |
2171 | return -ECONNABORTED; | |
2172 | ||
d6e04ae6 | 2173 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2174 | pSMB->Fid = netfid; |
2175 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2176 | if (wct == 14) |
8cc64c6e | 2177 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2178 | pSMB->Reserved = 0xFFFFFFFF; |
2179 | pSMB->WriteMode = 0; | |
2180 | pSMB->Remaining = 0; | |
d6e04ae6 | 2181 | |
1da177e4 | 2182 | pSMB->DataOffset = |
50c2f753 | 2183 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2184 | |
3e84469d SF |
2185 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2186 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2187 | /* header + 1 byte pad */ |
2188 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2189 | if (wct == 14) |
be8e3b00 | 2190 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2191 | else /* wct == 12 */ |
be8e3b00 | 2192 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2193 | if (wct == 14) |
8cc64c6e SF |
2194 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2195 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2196 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2197 | (struct smb_com_writex_req *)pSMB; |
2198 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2199 | } | |
3e84469d | 2200 | iov[0].iov_base = pSMB; |
790fe579 | 2201 | if (wct == 14) |
ec637e3f SF |
2202 | iov[0].iov_len = smb_hdr_len + 4; |
2203 | else /* wct == 12 pad bigger by four bytes */ | |
2204 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2205 | |
1da177e4 | 2206 | |
ba9ad725 | 2207 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c58186 | 2208 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2209 | if (rc) { |
f96637be | 2210 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2211 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2212 | /* presumably this can not happen, but best to be safe */ |
2213 | rc = -EIO; | |
d6e04ae6 | 2214 | } else { |
ad7a2926 | 2215 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2216 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2217 | *nbytes = (*nbytes) << 16; | |
2218 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2219 | |
2220 | /* | |
2221 | * Mask off high 16 bits when bytes written as returned by the | |
2222 | * server is greater than bytes requested by the client. OS/2 | |
2223 | * servers are known to set incorrect CountHigh values. | |
2224 | */ | |
2225 | if (*nbytes > count) | |
2226 | *nbytes &= 0xFFFF; | |
50c2f753 | 2227 | } |
1da177e4 | 2228 | |
4b8f930f | 2229 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2230 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2231 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2232 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2233 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2234 | |
50c2f753 | 2235 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2236 | since file handle passed in no longer valid */ |
2237 | ||
2238 | return rc; | |
2239 | } | |
d6e04ae6 | 2240 | |
6d5786a3 PS |
2241 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2242 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2243 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2244 | { | |
2245 | int rc = 0; | |
2246 | LOCK_REQ *pSMB = NULL; | |
2247 | struct kvec iov[2]; | |
2248 | int resp_buf_type; | |
2249 | __u16 count; | |
2250 | ||
f96637be JP |
2251 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2252 | num_lock, num_unlock); | |
9ee305b7 PS |
2253 | |
2254 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2255 | if (rc) | |
2256 | return rc; | |
2257 | ||
2258 | pSMB->Timeout = 0; | |
2259 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2260 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2261 | pSMB->LockType = lock_type; | |
2262 | pSMB->AndXCommand = 0xFF; /* none */ | |
2263 | pSMB->Fid = netfid; /* netfid stays le */ | |
2264 | ||
2265 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2266 | inc_rfc1001_len(pSMB, count); | |
2267 | pSMB->ByteCount = cpu_to_le16(count); | |
2268 | ||
2269 | iov[0].iov_base = (char *)pSMB; | |
2270 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2271 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2272 | iov[1].iov_base = (char *)buf; | |
2273 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2274 | ||
44c58186 | 2275 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2276 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2277 | if (rc) | |
f96637be | 2278 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2279 | |
2280 | return rc; | |
2281 | } | |
d6e04ae6 | 2282 | |
1da177e4 | 2283 | int |
6d5786a3 | 2284 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2285 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2286 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2287 | const __u32 numLock, const __u8 lockType, |
2288 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2289 | { |
2290 | int rc = 0; | |
2291 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2292 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2293 | int bytes_returned; |
a891f0f8 | 2294 | int flags = 0; |
1da177e4 LT |
2295 | __u16 count; |
2296 | ||
f96637be JP |
2297 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2298 | (int)waitFlag, numLock); | |
46810cbf SF |
2299 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2300 | ||
1da177e4 LT |
2301 | if (rc) |
2302 | return rc; | |
2303 | ||
790fe579 | 2304 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2305 | /* no response expected */ |
2306 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2307 | pSMB->Timeout = 0; |
4b18f2a9 | 2308 | } else if (waitFlag) { |
a891f0f8 | 2309 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2310 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2311 | } else { | |
2312 | pSMB->Timeout = 0; | |
2313 | } | |
2314 | ||
2315 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2316 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2317 | pSMB->LockType = lockType; | |
12fed00d | 2318 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2319 | pSMB->AndXCommand = 0xFF; /* none */ |
2320 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2321 | ||
790fe579 | 2322 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2323 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2324 | /* BB where to store pid high? */ |
2325 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2326 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2327 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2328 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2329 | count = sizeof(LOCKING_ANDX_RANGE); | |
2330 | } else { | |
2331 | /* oplock break */ | |
2332 | count = 0; | |
2333 | } | |
be8e3b00 | 2334 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2335 | pSMB->ByteCount = cpu_to_le16(count); |
2336 | ||
7ee1af76 JA |
2337 | if (waitFlag) { |
2338 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2339 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2340 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2341 | } else { |
a891f0f8 | 2342 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2343 | /* SMB buffer freed by function above */ |
7ee1af76 | 2344 | } |
44c58186 | 2345 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2346 | if (rc) |
f96637be | 2347 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2348 | |
50c2f753 | 2349 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2350 | since file handle passed in no longer valid */ |
2351 | return rc; | |
2352 | } | |
2353 | ||
08547b03 | 2354 | int |
6d5786a3 | 2355 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2356 | const __u16 smb_file_id, const __u32 netpid, |
2357 | const loff_t start_offset, const __u64 len, | |
2358 | struct file_lock *pLockData, const __u16 lock_type, | |
2359 | const bool waitFlag) | |
08547b03 SF |
2360 | { |
2361 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2362 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2363 | struct cifs_posix_lock *parm_data; |
2364 | int rc = 0; | |
3a5ff61c | 2365 | int timeout = 0; |
08547b03 | 2366 | int bytes_returned = 0; |
133672ef | 2367 | int resp_buf_type = 0; |
08547b03 | 2368 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2369 | struct kvec iov[1]; |
08547b03 | 2370 | |
f96637be | 2371 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2372 | |
08547b03 SF |
2373 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2374 | ||
2375 | if (rc) | |
2376 | return rc; | |
2377 | ||
2378 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2379 | ||
50c2f753 | 2380 | params = 6; |
08547b03 SF |
2381 | pSMB->MaxSetupCount = 0; |
2382 | pSMB->Reserved = 0; | |
2383 | pSMB->Flags = 0; | |
08547b03 SF |
2384 | pSMB->Reserved2 = 0; |
2385 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2386 | offset = param_offset + params; | |
2387 | ||
08547b03 SF |
2388 | count = sizeof(struct cifs_posix_lock); |
2389 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2390 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2391 | pSMB->SetupCount = 1; |
2392 | pSMB->Reserved3 = 0; | |
c5fd363d | 2393 | if (pLockData) |
08547b03 SF |
2394 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2395 | else | |
2396 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2397 | byte_count = 3 /* pad */ + params + count; | |
2398 | pSMB->DataCount = cpu_to_le16(count); | |
2399 | pSMB->ParameterCount = cpu_to_le16(params); | |
2400 | pSMB->TotalDataCount = pSMB->DataCount; | |
2401 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2402 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2403 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2404 | (((char *) &pSMB->hdr.Protocol) + offset); |
2405 | ||
2406 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2407 | if (waitFlag) { |
133672ef | 2408 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2409 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2410 | pSMB->Timeout = cpu_to_le32(-1); |
2411 | } else | |
2412 | pSMB->Timeout = 0; | |
2413 | ||
4f6bcec9 | 2414 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2415 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2416 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2417 | |
2418 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2419 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2420 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2421 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2422 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2423 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2424 | if (waitFlag) { |
2425 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2426 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2427 | } else { | |
133672ef | 2428 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2429 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2430 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2431 | &resp_buf_type, timeout); | |
2432 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2433 | not try to free it twice below on exit */ | |
2434 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2435 | } |
2436 | ||
08547b03 | 2437 | if (rc) { |
f96637be | 2438 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2439 | } else if (pLockData) { |
fc94cdb9 SF |
2440 | /* lock structure can be returned on get */ |
2441 | __u16 data_offset; | |
2442 | __u16 data_count; | |
2443 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2444 | ||
820a803f | 2445 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2446 | rc = -EIO; /* bad smb */ |
2447 | goto plk_err_exit; | |
2448 | } | |
fc94cdb9 SF |
2449 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2450 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2451 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2452 | rc = -EIO; |
2453 | goto plk_err_exit; | |
2454 | } | |
2455 | parm_data = (struct cifs_posix_lock *) | |
2456 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2457 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2458 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2459 | else { |
2460 | if (parm_data->lock_type == | |
2461 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2462 | pLockData->fl_type = F_RDLCK; | |
2463 | else if (parm_data->lock_type == | |
2464 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2465 | pLockData->fl_type = F_WRLCK; | |
2466 | ||
5443d130 SF |
2467 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2468 | pLockData->fl_end = pLockData->fl_start + | |
2469 | le64_to_cpu(parm_data->length) - 1; | |
2470 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2471 | } |
08547b03 | 2472 | } |
50c2f753 | 2473 | |
fc94cdb9 | 2474 | plk_err_exit: |
08547b03 SF |
2475 | if (pSMB) |
2476 | cifs_small_buf_release(pSMB); | |
2477 | ||
133672ef SF |
2478 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2479 | cifs_small_buf_release(iov[0].iov_base); | |
2480 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2481 | cifs_buf_release(iov[0].iov_base); | |
2482 | ||
08547b03 SF |
2483 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2484 | since file handle passed in no longer valid */ | |
2485 | ||
2486 | return rc; | |
2487 | } | |
2488 | ||
2489 | ||
1da177e4 | 2490 | int |
6d5786a3 | 2491 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2492 | { |
2493 | int rc = 0; | |
2494 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2495 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2496 | |
2497 | /* do not retry on dead session on close */ | |
2498 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2499 | if (rc == -EAGAIN) |
1da177e4 LT |
2500 | return 0; |
2501 | if (rc) | |
2502 | return rc; | |
2503 | ||
1da177e4 | 2504 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2505 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2506 | pSMB->ByteCount = 0; |
792af7b0 | 2507 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2508 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2509 | if (rc) { |
790fe579 | 2510 | if (rc != -EINTR) { |
1da177e4 | 2511 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2512 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2513 | } |
2514 | } | |
2515 | ||
1da177e4 | 2516 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2517 | if (rc == -EAGAIN) |
1da177e4 LT |
2518 | rc = 0; |
2519 | ||
2520 | return rc; | |
2521 | } | |
2522 | ||
b298f223 | 2523 | int |
6d5786a3 | 2524 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2525 | { |
2526 | int rc = 0; | |
2527 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2528 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2529 | |
2530 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2531 | if (rc) | |
2532 | return rc; | |
2533 | ||
2534 | pSMB->FileID = (__u16) smb_file_id; | |
2535 | pSMB->ByteCount = 0; | |
792af7b0 | 2536 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2537 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2538 | if (rc) |
f96637be | 2539 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2540 | |
2541 | return rc; | |
2542 | } | |
2543 | ||
1da177e4 | 2544 | int |
6d5786a3 | 2545 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2546 | const char *from_name, const char *to_name, |
2547 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2548 | { |
2549 | int rc = 0; | |
2550 | RENAME_REQ *pSMB = NULL; | |
2551 | RENAME_RSP *pSMBr = NULL; | |
2552 | int bytes_returned; | |
2553 | int name_len, name_len2; | |
2554 | __u16 count; | |
8ceb9843 | 2555 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2556 | |
f96637be | 2557 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2558 | renameRetry: |
2559 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2560 | (void **) &pSMBr); | |
2561 | if (rc) | |
2562 | return rc; | |
2563 | ||
2564 | pSMB->BufferFormat = 0x04; | |
2565 | pSMB->SearchAttributes = | |
2566 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2567 | ATTR_DIRECTORY); | |
2568 | ||
2569 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2570 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2571 | from_name, PATH_MAX, | |
2572 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2573 | name_len++; /* trailing null */ |
2574 | name_len *= 2; | |
2575 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2576 | /* protocol requires ASCII signature byte on Unicode string */ | |
2577 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2578 | name_len2 = | |
acbbb76a | 2579 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2580 | to_name, PATH_MAX, cifs_sb->local_nls, |
2581 | remap); | |
1da177e4 LT |
2582 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2583 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2584 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2585 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2586 | name_len++; /* trailing null */ |
8ceb9843 PS |
2587 | strncpy(pSMB->OldFileName, from_name, name_len); |
2588 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2589 | name_len2++; /* trailing null */ |
2590 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2591 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2592 | name_len2++; /* trailing null */ |
2593 | name_len2++; /* signature byte */ | |
2594 | } | |
2595 | ||
2596 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2597 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2598 | pSMB->ByteCount = cpu_to_le16(count); |
2599 | ||
2600 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2601 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2602 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2603 | if (rc) |
f96637be | 2604 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2605 | |
1da177e4 LT |
2606 | cifs_buf_release(pSMB); |
2607 | ||
2608 | if (rc == -EAGAIN) | |
2609 | goto renameRetry; | |
2610 | ||
2611 | return rc; | |
2612 | } | |
2613 | ||
6d5786a3 | 2614 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2615 | int netfid, const char *target_name, |
50c2f753 | 2616 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2617 | { |
2618 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2619 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2620 | struct set_file_rename *rename_info; |
1da177e4 LT |
2621 | char *data_offset; |
2622 | char dummy_string[30]; | |
2623 | int rc = 0; | |
2624 | int bytes_returned = 0; | |
2625 | int len_of_str; | |
2626 | __u16 params, param_offset, offset, count, byte_count; | |
2627 | ||
f96637be | 2628 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2629 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2630 | (void **) &pSMBr); | |
2631 | if (rc) | |
2632 | return rc; | |
2633 | ||
2634 | params = 6; | |
2635 | pSMB->MaxSetupCount = 0; | |
2636 | pSMB->Reserved = 0; | |
2637 | pSMB->Flags = 0; | |
2638 | pSMB->Timeout = 0; | |
2639 | pSMB->Reserved2 = 0; | |
2640 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2641 | offset = param_offset + params; | |
2642 | ||
2643 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2644 | rename_info = (struct set_file_rename *) data_offset; | |
2645 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2646 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2647 | pSMB->SetupCount = 1; |
2648 | pSMB->Reserved3 = 0; | |
2649 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2650 | byte_count = 3 /* pad */ + params; | |
2651 | pSMB->ParameterCount = cpu_to_le16(params); | |
2652 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2653 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2654 | pSMB->DataOffset = cpu_to_le16(offset); | |
2655 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2656 | rename_info->overwrite = cpu_to_le32(1); | |
2657 | rename_info->root_fid = 0; | |
2658 | /* unicode only call */ | |
790fe579 | 2659 | if (target_name == NULL) { |
50c2f753 | 2660 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2661 | len_of_str = |
2662 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2663 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2664 | } else { |
acbbb76a SF |
2665 | len_of_str = |
2666 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2667 | target_name, PATH_MAX, nls_codepage, |
2668 | remap); | |
1da177e4 LT |
2669 | } |
2670 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2671 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2672 | byte_count += count; |
2673 | pSMB->DataCount = cpu_to_le16(count); | |
2674 | pSMB->TotalDataCount = pSMB->DataCount; | |
2675 | pSMB->Fid = netfid; | |
2676 | pSMB->InformationLevel = | |
2677 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2678 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2679 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2680 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2681 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2682 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2683 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2684 | if (rc) |
f96637be JP |
2685 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2686 | rc); | |
a5a2b489 | 2687 | |
1da177e4 LT |
2688 | cifs_buf_release(pSMB); |
2689 | ||
2690 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2691 | since file handle passed in no longer valid */ | |
2692 | ||
2693 | return rc; | |
2694 | } | |
2695 | ||
2696 | int | |
6d5786a3 PS |
2697 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2698 | const char *fromName, const __u16 target_tid, const char *toName, | |
2699 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2700 | { |
2701 | int rc = 0; | |
2702 | COPY_REQ *pSMB = NULL; | |
2703 | COPY_RSP *pSMBr = NULL; | |
2704 | int bytes_returned; | |
2705 | int name_len, name_len2; | |
2706 | __u16 count; | |
2707 | ||
f96637be | 2708 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2709 | copyRetry: |
2710 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2711 | (void **) &pSMBr); | |
2712 | if (rc) | |
2713 | return rc; | |
2714 | ||
2715 | pSMB->BufferFormat = 0x04; | |
2716 | pSMB->Tid2 = target_tid; | |
2717 | ||
2718 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2719 | ||
2720 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2721 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2722 | fromName, PATH_MAX, nls_codepage, | |
2723 | remap); | |
1da177e4 LT |
2724 | name_len++; /* trailing null */ |
2725 | name_len *= 2; | |
2726 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2727 | /* protocol requires ASCII signature byte on Unicode string */ | |
2728 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2729 | name_len2 = |
acbbb76a SF |
2730 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2731 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2732 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2733 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2734 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2735 | name_len = strnlen(fromName, PATH_MAX); |
2736 | name_len++; /* trailing null */ | |
2737 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2738 | name_len2 = strnlen(toName, PATH_MAX); | |
2739 | name_len2++; /* trailing null */ | |
2740 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2741 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2742 | name_len2++; /* trailing null */ | |
2743 | name_len2++; /* signature byte */ | |
2744 | } | |
2745 | ||
2746 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2747 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2748 | pSMB->ByteCount = cpu_to_le16(count); |
2749 | ||
2750 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2751 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2752 | if (rc) { | |
f96637be JP |
2753 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2754 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2755 | } |
0d817bc0 | 2756 | cifs_buf_release(pSMB); |
1da177e4 LT |
2757 | |
2758 | if (rc == -EAGAIN) | |
2759 | goto copyRetry; | |
2760 | ||
2761 | return rc; | |
2762 | } | |
2763 | ||
2764 | int | |
6d5786a3 | 2765 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2766 | const char *fromName, const char *toName, |
2767 | const struct nls_table *nls_codepage) | |
2768 | { | |
2769 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2770 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2771 | char *data_offset; | |
2772 | int name_len; | |
2773 | int name_len_target; | |
2774 | int rc = 0; | |
2775 | int bytes_returned = 0; | |
2776 | __u16 params, param_offset, offset, byte_count; | |
2777 | ||
f96637be | 2778 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2779 | createSymLinkRetry: |
2780 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2781 | (void **) &pSMBr); | |
2782 | if (rc) | |
2783 | return rc; | |
2784 | ||
2785 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2786 | name_len = | |
acbbb76a SF |
2787 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2788 | /* find define for this maxpathcomponent */ | |
2789 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2790 | name_len++; /* trailing null */ |
2791 | name_len *= 2; | |
2792 | ||
50c2f753 | 2793 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2794 | name_len = strnlen(fromName, PATH_MAX); |
2795 | name_len++; /* trailing null */ | |
2796 | strncpy(pSMB->FileName, fromName, name_len); | |
2797 | } | |
2798 | params = 6 + name_len; | |
2799 | pSMB->MaxSetupCount = 0; | |
2800 | pSMB->Reserved = 0; | |
2801 | pSMB->Flags = 0; | |
2802 | pSMB->Timeout = 0; | |
2803 | pSMB->Reserved2 = 0; | |
2804 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2805 | InformationLevel) - 4; |
1da177e4 LT |
2806 | offset = param_offset + params; |
2807 | ||
2808 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2809 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2810 | name_len_target = | |
acbbb76a SF |
2811 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2812 | /* find define for this maxpathcomponent */ | |
2813 | , nls_codepage); | |
1da177e4 LT |
2814 | name_len_target++; /* trailing null */ |
2815 | name_len_target *= 2; | |
50c2f753 | 2816 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2817 | name_len_target = strnlen(toName, PATH_MAX); |
2818 | name_len_target++; /* trailing null */ | |
2819 | strncpy(data_offset, toName, name_len_target); | |
2820 | } | |
2821 | ||
2822 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2823 | /* BB find exact max on data count below from sess */ | |
2824 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2825 | pSMB->SetupCount = 1; | |
2826 | pSMB->Reserved3 = 0; | |
2827 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2828 | byte_count = 3 /* pad */ + params + name_len_target; | |
2829 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2830 | pSMB->ParameterCount = cpu_to_le16(params); | |
2831 | pSMB->TotalDataCount = pSMB->DataCount; | |
2832 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2833 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2834 | pSMB->DataOffset = cpu_to_le16(offset); | |
2835 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2836 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2837 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2838 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2839 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2840 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2841 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2842 | if (rc) |
f96637be JP |
2843 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2844 | rc); | |
1da177e4 | 2845 | |
0d817bc0 | 2846 | cifs_buf_release(pSMB); |
1da177e4 LT |
2847 | |
2848 | if (rc == -EAGAIN) | |
2849 | goto createSymLinkRetry; | |
2850 | ||
2851 | return rc; | |
2852 | } | |
2853 | ||
2854 | int | |
6d5786a3 | 2855 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2856 | const char *fromName, const char *toName, |
737b758c | 2857 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2858 | { |
2859 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2860 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2861 | char *data_offset; | |
2862 | int name_len; | |
2863 | int name_len_target; | |
2864 | int rc = 0; | |
2865 | int bytes_returned = 0; | |
2866 | __u16 params, param_offset, offset, byte_count; | |
2867 | ||
f96637be | 2868 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2869 | createHardLinkRetry: |
2870 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2871 | (void **) &pSMBr); | |
2872 | if (rc) | |
2873 | return rc; | |
2874 | ||
2875 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2876 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2877 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2878 | name_len++; /* trailing null */ |
2879 | name_len *= 2; | |
2880 | ||
50c2f753 | 2881 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2882 | name_len = strnlen(toName, PATH_MAX); |
2883 | name_len++; /* trailing null */ | |
2884 | strncpy(pSMB->FileName, toName, name_len); | |
2885 | } | |
2886 | params = 6 + name_len; | |
2887 | pSMB->MaxSetupCount = 0; | |
2888 | pSMB->Reserved = 0; | |
2889 | pSMB->Flags = 0; | |
2890 | pSMB->Timeout = 0; | |
2891 | pSMB->Reserved2 = 0; | |
2892 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2893 | InformationLevel) - 4; |
1da177e4 LT |
2894 | offset = param_offset + params; |
2895 | ||
2896 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2897 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2898 | name_len_target = | |
acbbb76a SF |
2899 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2900 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2901 | name_len_target++; /* trailing null */ |
2902 | name_len_target *= 2; | |
50c2f753 | 2903 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2904 | name_len_target = strnlen(fromName, PATH_MAX); |
2905 | name_len_target++; /* trailing null */ | |
2906 | strncpy(data_offset, fromName, name_len_target); | |
2907 | } | |
2908 | ||
2909 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2910 | /* BB find exact max on data count below from sess*/ | |
2911 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2912 | pSMB->SetupCount = 1; | |
2913 | pSMB->Reserved3 = 0; | |
2914 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2915 | byte_count = 3 /* pad */ + params + name_len_target; | |
2916 | pSMB->ParameterCount = cpu_to_le16(params); | |
2917 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2918 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2919 | pSMB->TotalDataCount = pSMB->DataCount; | |
2920 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2921 | pSMB->DataOffset = cpu_to_le16(offset); | |
2922 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2923 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2924 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2925 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2926 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2927 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2928 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2929 | if (rc) |
f96637be JP |
2930 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2931 | rc); | |
1da177e4 LT |
2932 | |
2933 | cifs_buf_release(pSMB); | |
2934 | if (rc == -EAGAIN) | |
2935 | goto createHardLinkRetry; | |
2936 | ||
2937 | return rc; | |
2938 | } | |
2939 | ||
2940 | int | |
6d5786a3 | 2941 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2942 | const char *from_name, const char *to_name, |
2943 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2944 | { |
2945 | int rc = 0; | |
2946 | NT_RENAME_REQ *pSMB = NULL; | |
2947 | RENAME_RSP *pSMBr = NULL; | |
2948 | int bytes_returned; | |
2949 | int name_len, name_len2; | |
2950 | __u16 count; | |
d6e906f1 | 2951 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2952 | |
f96637be | 2953 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2954 | winCreateHardLinkRetry: |
2955 | ||
2956 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2957 | (void **) &pSMBr); | |
2958 | if (rc) | |
2959 | return rc; | |
2960 | ||
2961 | pSMB->SearchAttributes = | |
2962 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2963 | ATTR_DIRECTORY); | |
2964 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2965 | pSMB->ClusterCount = 0; | |
2966 | ||
2967 | pSMB->BufferFormat = 0x04; | |
2968 | ||
2969 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2970 | name_len = | |
d6e906f1 SF |
2971 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2972 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2973 | name_len++; /* trailing null */ |
2974 | name_len *= 2; | |
fcc7c09d JL |
2975 | |
2976 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2977 | pSMB->OldFileName[name_len] = 0x04; | |
2978 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2979 | name_len2 = |
acbbb76a | 2980 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2981 | to_name, PATH_MAX, cifs_sb->local_nls, |
2982 | remap); | |
1da177e4 LT |
2983 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2984 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2985 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 2986 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2987 | name_len++; /* trailing null */ |
d6e906f1 SF |
2988 | strncpy(pSMB->OldFileName, from_name, name_len); |
2989 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2990 | name_len2++; /* trailing null */ |
2991 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 2992 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2993 | name_len2++; /* trailing null */ |
2994 | name_len2++; /* signature byte */ | |
2995 | } | |
2996 | ||
2997 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2998 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2999 | pSMB->ByteCount = cpu_to_le16(count); |
3000 | ||
3001 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3002 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3003 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3004 | if (rc) |
f96637be | 3005 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3006 | |
1da177e4 LT |
3007 | cifs_buf_release(pSMB); |
3008 | if (rc == -EAGAIN) | |
3009 | goto winCreateHardLinkRetry; | |
3010 | ||
3011 | return rc; | |
3012 | } | |
3013 | ||
3014 | int | |
6d5786a3 | 3015 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3016 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
3017 | const struct nls_table *nls_codepage) |
3018 | { | |
3019 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3020 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3021 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3022 | int rc = 0; | |
3023 | int bytes_returned; | |
3024 | int name_len; | |
3025 | __u16 params, byte_count; | |
460b9696 | 3026 | char *data_start; |
1da177e4 | 3027 | |
f96637be | 3028 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3029 | |
3030 | querySymLinkRetry: | |
3031 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3032 | (void **) &pSMBr); | |
3033 | if (rc) | |
3034 | return rc; | |
3035 | ||
3036 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3037 | name_len = | |
acbbb76a SF |
3038 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3039 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3040 | name_len++; /* trailing null */ |
3041 | name_len *= 2; | |
50c2f753 | 3042 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3043 | name_len = strnlen(searchName, PATH_MAX); |
3044 | name_len++; /* trailing null */ | |
3045 | strncpy(pSMB->FileName, searchName, name_len); | |
3046 | } | |
3047 | ||
3048 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3049 | pSMB->TotalDataCount = 0; | |
3050 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3051 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3052 | pSMB->MaxSetupCount = 0; |
3053 | pSMB->Reserved = 0; | |
3054 | pSMB->Flags = 0; | |
3055 | pSMB->Timeout = 0; | |
3056 | pSMB->Reserved2 = 0; | |
3057 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3058 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3059 | pSMB->DataCount = 0; |
3060 | pSMB->DataOffset = 0; | |
3061 | pSMB->SetupCount = 1; | |
3062 | pSMB->Reserved3 = 0; | |
3063 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3064 | byte_count = params + 1 /* pad */ ; | |
3065 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3066 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3067 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3068 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3069 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3070 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3071 | ||
3072 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3073 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3074 | if (rc) { | |
f96637be | 3075 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3076 | } else { |
3077 | /* decode response */ | |
3078 | ||
3079 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3080 | /* BB also check enough total bytes returned */ |
820a803f | 3081 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3082 | rc = -EIO; |
1da177e4 | 3083 | else { |
0e0d2cf3 | 3084 | bool is_unicode; |
460b9696 JL |
3085 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3086 | ||
3087 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3088 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3089 | |
0e0d2cf3 SF |
3090 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3091 | is_unicode = true; | |
3092 | else | |
3093 | is_unicode = false; | |
3094 | ||
737b758c | 3095 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3096 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3097 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3098 | if (!*symlinkinfo) |
460b9696 | 3099 | rc = -ENOMEM; |
1da177e4 LT |
3100 | } |
3101 | } | |
3102 | cifs_buf_release(pSMB); | |
3103 | if (rc == -EAGAIN) | |
3104 | goto querySymLinkRetry; | |
3105 | return rc; | |
3106 | } | |
3107 | ||
c52a9554 SF |
3108 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3109 | /* | |
3110 | * Recent Windows versions now create symlinks more frequently | |
3111 | * and they use the "reparse point" mechanism below. We can of course | |
3112 | * do symlinks nicely to Samba and other servers which support the | |
3113 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3114 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3115 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3116 | * In the interim this code has been moved to its own config option so | |
3117 | * it is not compiled in by default until callers fixed up and more tested. | |
3118 | */ | |
1da177e4 | 3119 | int |
6d5786a3 | 3120 | CIFSSMBQueryReparseLinkInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3121 | const unsigned char *searchName, |
50c2f753 | 3122 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3123 | const struct nls_table *nls_codepage) |
3124 | { | |
3125 | int rc = 0; | |
3126 | int bytes_returned; | |
50c2f753 SF |
3127 | struct smb_com_transaction_ioctl_req *pSMB; |
3128 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3129 | |
f96637be JP |
3130 | cifs_dbg(FYI, "In Windows reparse style QueryLink for path %s\n", |
3131 | searchName); | |
1da177e4 LT |
3132 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3133 | (void **) &pSMBr); | |
3134 | if (rc) | |
3135 | return rc; | |
3136 | ||
3137 | pSMB->TotalParameterCount = 0 ; | |
3138 | pSMB->TotalDataCount = 0; | |
3139 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3140 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3141 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3142 | pSMB->MaxSetupCount = 4; |
3143 | pSMB->Reserved = 0; | |
3144 | pSMB->ParameterOffset = 0; | |
3145 | pSMB->DataCount = 0; | |
3146 | pSMB->DataOffset = 0; | |
3147 | pSMB->SetupCount = 4; | |
3148 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3149 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3150 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3151 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3152 | pSMB->IsRootFlag = 0; | |
3153 | pSMB->Fid = fid; /* file handle always le */ | |
3154 | pSMB->ByteCount = 0; | |
3155 | ||
3156 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3157 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3158 | if (rc) { | |
f96637be | 3159 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
1da177e4 LT |
3160 | } else { /* decode response */ |
3161 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3162 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3163 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3164 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3165 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3166 | goto qreparse_out; |
3167 | } | |
3168 | if (data_count && (data_count < 2048)) { | |
3169 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3170 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3171 | |
afe48c31 | 3172 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3173 | (struct reparse_data *) |
3174 | ((char *)&pSMBr->hdr.Protocol | |
3175 | + data_offset); | |
afe48c31 SF |
3176 | if ((char *)reparse_buf >= end_of_smb) { |
3177 | rc = -EIO; | |
3178 | goto qreparse_out; | |
3179 | } | |
3180 | if ((reparse_buf->LinkNamesBuf + | |
3181 | reparse_buf->TargetNameOffset + | |
3182 | reparse_buf->TargetNameLen) > end_of_smb) { | |
f96637be | 3183 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
afe48c31 SF |
3184 | rc = -EIO; |
3185 | goto qreparse_out; | |
3186 | } | |
50c2f753 | 3187 | |
afe48c31 SF |
3188 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3189 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3190 | (reparse_buf->LinkNamesBuf + |
3191 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3192 | buflen, |
3193 | reparse_buf->TargetNameLen, | |
3194 | nls_codepage, 0); | |
3195 | } else { /* ASCII names */ | |
3196 | strncpy(symlinkinfo, | |
3197 | reparse_buf->LinkNamesBuf + | |
3198 | reparse_buf->TargetNameOffset, | |
3199 | min_t(const int, buflen, | |
3200 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3201 | } |
afe48c31 SF |
3202 | } else { |
3203 | rc = -EIO; | |
f96637be | 3204 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); |
1da177e4 | 3205 | } |
afe48c31 SF |
3206 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3207 | does not go off the end of the buffer */ | |
f96637be | 3208 | cifs_dbg(FYI, "readlink result - %s\n", symlinkinfo); |
1da177e4 | 3209 | } |
989c7e51 | 3210 | |
1da177e4 | 3211 | qreparse_out: |
4a6d87f1 | 3212 | cifs_buf_release(pSMB); |
1da177e4 LT |
3213 | |
3214 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3215 | since file handle passed in no longer valid */ | |
3216 | ||
3217 | return rc; | |
3218 | } | |
c52a9554 | 3219 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3220 | |
3221 | #ifdef CONFIG_CIFS_POSIX | |
3222 | ||
3223 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3224 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3225 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3226 | { |
3227 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3228 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3229 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3230 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3231 | /* |
3232 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3233 | ace->e_perm, ace->e_tag, ace->e_id); | |
3234 | */ | |
1da177e4 LT |
3235 | |
3236 | return; | |
3237 | } | |
3238 | ||
3239 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3240 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3241 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3242 | { |
3243 | int size = 0; | |
3244 | int i; | |
3245 | __u16 count; | |
50c2f753 SF |
3246 | struct cifs_posix_ace *pACE; |
3247 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3248 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3249 | |
3250 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3251 | return -EOPNOTSUPP; | |
3252 | ||
790fe579 | 3253 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3254 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3255 | pACE = &cifs_acl->ace_array[0]; | |
3256 | size = sizeof(struct cifs_posix_acl); | |
3257 | size += sizeof(struct cifs_posix_ace) * count; | |
3258 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3259 | if (size_of_data_area < size) { |
f96637be JP |
3260 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3261 | size_of_data_area, size); | |
1da177e4 LT |
3262 | return -EINVAL; |
3263 | } | |
790fe579 | 3264 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3265 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3266 | size = sizeof(struct cifs_posix_acl); | |
3267 | size += sizeof(struct cifs_posix_ace) * count; | |
3268 | /* skip past access ACEs to get to default ACEs */ | |
3269 | pACE = &cifs_acl->ace_array[count]; | |
3270 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3271 | size += sizeof(struct cifs_posix_ace) * count; | |
3272 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3273 | if (size_of_data_area < size) |
1da177e4 LT |
3274 | return -EINVAL; |
3275 | } else { | |
3276 | /* illegal type */ | |
3277 | return -EINVAL; | |
3278 | } | |
3279 | ||
3280 | size = posix_acl_xattr_size(count); | |
790fe579 | 3281 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3282 | /* used to query ACL EA size */ |
790fe579 | 3283 | } else if (size > buflen) { |
1da177e4 LT |
3284 | return -ERANGE; |
3285 | } else /* buffer big enough */ { | |
ff7feac9 | 3286 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3287 | for (i = 0; i < count ; i++) { |
3288 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3289 | pACE++; | |
1da177e4 LT |
3290 | } |
3291 | } | |
3292 | return size; | |
3293 | } | |
3294 | ||
50c2f753 SF |
3295 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3296 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3297 | { |
3298 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3299 | ||
ff7feac9 SF |
3300 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3301 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3302 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3303 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3304 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3305 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3306 | } else |
ff7feac9 | 3307 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3308 | /* |
3309 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3310 | ace->e_perm, ace->e_tag, ace->e_id); | |
3311 | */ | |
1da177e4 LT |
3312 | return rc; |
3313 | } | |
3314 | ||
3315 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3316 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3317 | const int buflen, const int acl_type) | |
1da177e4 LT |
3318 | { |
3319 | __u16 rc = 0; | |
50c2f753 SF |
3320 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3321 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3322 | int count; |
3323 | int i; | |
3324 | ||
790fe579 | 3325 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3326 | return 0; |
3327 | ||
3328 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3329 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3330 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3331 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3332 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3333 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3334 | return 0; |
3335 | } | |
3336 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3337 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3338 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3339 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3340 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3341 | else { |
f96637be | 3342 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3343 | return 0; |
3344 | } | |
50c2f753 | 3345 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3346 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3347 | &local_acl->a_entries[i]); | |
790fe579 | 3348 | if (rc != 0) { |
1da177e4 LT |
3349 | /* ACE not converted */ |
3350 | break; | |
3351 | } | |
3352 | } | |
790fe579 | 3353 | if (rc == 0) { |
1da177e4 LT |
3354 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3355 | rc += sizeof(struct cifs_posix_acl); | |
3356 | /* BB add check to make sure ACL does not overflow SMB */ | |
3357 | } | |
3358 | return rc; | |
3359 | } | |
3360 | ||
3361 | int | |
6d5786a3 | 3362 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3363 | const unsigned char *searchName, |
3364 | char *acl_inf, const int buflen, const int acl_type, | |
3365 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3366 | { |
3367 | /* SMB_QUERY_POSIX_ACL */ | |
3368 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3369 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3370 | int rc = 0; | |
3371 | int bytes_returned; | |
3372 | int name_len; | |
3373 | __u16 params, byte_count; | |
50c2f753 | 3374 | |
f96637be | 3375 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3376 | |
3377 | queryAclRetry: | |
3378 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3379 | (void **) &pSMBr); | |
3380 | if (rc) | |
3381 | return rc; | |
50c2f753 | 3382 | |
1da177e4 LT |
3383 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3384 | name_len = | |
acbbb76a SF |
3385 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3386 | searchName, PATH_MAX, nls_codepage, | |
3387 | remap); | |
1da177e4 LT |
3388 | name_len++; /* trailing null */ |
3389 | name_len *= 2; | |
3390 | pSMB->FileName[name_len] = 0; | |
3391 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3392 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3393 | name_len = strnlen(searchName, PATH_MAX); |
3394 | name_len++; /* trailing null */ | |
3395 | strncpy(pSMB->FileName, searchName, name_len); | |
3396 | } | |
3397 | ||
3398 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3399 | pSMB->TotalDataCount = 0; | |
3400 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3401 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3402 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3403 | pSMB->MaxSetupCount = 0; | |
3404 | pSMB->Reserved = 0; | |
3405 | pSMB->Flags = 0; | |
3406 | pSMB->Timeout = 0; | |
3407 | pSMB->Reserved2 = 0; | |
3408 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3409 | offsetof(struct smb_com_transaction2_qpi_req, |
3410 | InformationLevel) - 4); | |
1da177e4 LT |
3411 | pSMB->DataCount = 0; |
3412 | pSMB->DataOffset = 0; | |
3413 | pSMB->SetupCount = 1; | |
3414 | pSMB->Reserved3 = 0; | |
3415 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3416 | byte_count = params + 1 /* pad */ ; | |
3417 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3418 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3419 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3420 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3421 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3422 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3423 | ||
3424 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3425 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3426 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3427 | if (rc) { |
f96637be | 3428 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3429 | } else { |
3430 | /* decode response */ | |
50c2f753 | 3431 | |
1da177e4 | 3432 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3433 | /* BB also check enough total bytes returned */ |
820a803f | 3434 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3435 | rc = -EIO; /* bad smb */ |
3436 | else { | |
3437 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3438 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3439 | rc = cifs_copy_posix_acl(acl_inf, | |
3440 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3441 | buflen, acl_type, count); |
1da177e4 LT |
3442 | } |
3443 | } | |
3444 | cifs_buf_release(pSMB); | |
3445 | if (rc == -EAGAIN) | |
3446 | goto queryAclRetry; | |
3447 | return rc; | |
3448 | } | |
3449 | ||
3450 | int | |
6d5786a3 | 3451 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3452 | const unsigned char *fileName, |
3453 | const char *local_acl, const int buflen, | |
3454 | const int acl_type, | |
3455 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3456 | { |
3457 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3458 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3459 | char *parm_data; | |
3460 | int name_len; | |
3461 | int rc = 0; | |
3462 | int bytes_returned = 0; | |
3463 | __u16 params, byte_count, data_count, param_offset, offset; | |
3464 | ||
f96637be | 3465 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3466 | setAclRetry: |
3467 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3468 | (void **) &pSMBr); |
1da177e4 LT |
3469 | if (rc) |
3470 | return rc; | |
3471 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3472 | name_len = | |
acbbb76a SF |
3473 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3474 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3475 | name_len++; /* trailing null */ |
3476 | name_len *= 2; | |
50c2f753 | 3477 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3478 | name_len = strnlen(fileName, PATH_MAX); |
3479 | name_len++; /* trailing null */ | |
3480 | strncpy(pSMB->FileName, fileName, name_len); | |
3481 | } | |
3482 | params = 6 + name_len; | |
3483 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3484 | /* BB find max SMB size from sess */ |
3485 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3486 | pSMB->MaxSetupCount = 0; |
3487 | pSMB->Reserved = 0; | |
3488 | pSMB->Flags = 0; | |
3489 | pSMB->Timeout = 0; | |
3490 | pSMB->Reserved2 = 0; | |
3491 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3492 | InformationLevel) - 4; |
1da177e4 LT |
3493 | offset = param_offset + params; |
3494 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3495 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3496 | ||
3497 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3498 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3499 | |
790fe579 | 3500 | if (data_count == 0) { |
1da177e4 LT |
3501 | rc = -EOPNOTSUPP; |
3502 | goto setACLerrorExit; | |
3503 | } | |
3504 | pSMB->DataOffset = cpu_to_le16(offset); | |
3505 | pSMB->SetupCount = 1; | |
3506 | pSMB->Reserved3 = 0; | |
3507 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3508 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3509 | byte_count = 3 /* pad */ + params + data_count; | |
3510 | pSMB->DataCount = cpu_to_le16(data_count); | |
3511 | pSMB->TotalDataCount = pSMB->DataCount; | |
3512 | pSMB->ParameterCount = cpu_to_le16(params); | |
3513 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3514 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3515 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3516 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3517 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3518 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3519 | if (rc) |
f96637be | 3520 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3521 | |
3522 | setACLerrorExit: | |
3523 | cifs_buf_release(pSMB); | |
3524 | if (rc == -EAGAIN) | |
3525 | goto setAclRetry; | |
3526 | return rc; | |
3527 | } | |
3528 | ||
f654bac2 SF |
3529 | /* BB fix tabs in this function FIXME BB */ |
3530 | int | |
6d5786a3 | 3531 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3532 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3533 | { |
50c2f753 SF |
3534 | int rc = 0; |
3535 | struct smb_t2_qfi_req *pSMB = NULL; | |
3536 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3537 | int bytes_returned; | |
3538 | __u16 params, byte_count; | |
f654bac2 | 3539 | |
f96637be | 3540 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3541 | if (tcon == NULL) |
3542 | return -ENODEV; | |
f654bac2 SF |
3543 | |
3544 | GetExtAttrRetry: | |
790fe579 SF |
3545 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3546 | (void **) &pSMBr); | |
3547 | if (rc) | |
3548 | return rc; | |
f654bac2 | 3549 | |
ad7a2926 | 3550 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3551 | pSMB->t2.TotalDataCount = 0; |
3552 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3553 | /* BB find exact max data count below from sess structure BB */ | |
3554 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3555 | pSMB->t2.MaxSetupCount = 0; | |
3556 | pSMB->t2.Reserved = 0; | |
3557 | pSMB->t2.Flags = 0; | |
3558 | pSMB->t2.Timeout = 0; | |
3559 | pSMB->t2.Reserved2 = 0; | |
3560 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3561 | Fid) - 4); | |
3562 | pSMB->t2.DataCount = 0; | |
3563 | pSMB->t2.DataOffset = 0; | |
3564 | pSMB->t2.SetupCount = 1; | |
3565 | pSMB->t2.Reserved3 = 0; | |
3566 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3567 | byte_count = params + 1 /* pad */ ; | |
3568 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3569 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3570 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3571 | pSMB->Pad = 0; | |
f654bac2 | 3572 | pSMB->Fid = netfid; |
be8e3b00 | 3573 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3574 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3575 | ||
3576 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3577 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3578 | if (rc) { | |
f96637be | 3579 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3580 | } else { |
3581 | /* decode response */ | |
3582 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3583 | /* BB also check enough total bytes returned */ |
820a803f | 3584 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3585 | /* If rc should we check for EOPNOSUPP and |
3586 | disable the srvino flag? or in caller? */ | |
3587 | rc = -EIO; /* bad smb */ | |
3588 | else { | |
3589 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3590 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3591 | struct file_chattr_info *pfinfo; | |
3592 | /* BB Do we need a cast or hash here ? */ | |
3593 | if (count != 16) { | |
f96637be | 3594 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3595 | rc = -EIO; |
3596 | goto GetExtAttrOut; | |
3597 | } | |
3598 | pfinfo = (struct file_chattr_info *) | |
3599 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3600 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3601 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3602 | } |
3603 | } | |
f654bac2 | 3604 | GetExtAttrOut: |
790fe579 SF |
3605 | cifs_buf_release(pSMB); |
3606 | if (rc == -EAGAIN) | |
3607 | goto GetExtAttrRetry; | |
3608 | return rc; | |
f654bac2 SF |
3609 | } |
3610 | ||
f654bac2 | 3611 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3612 | |
79df1bae JL |
3613 | #ifdef CONFIG_CIFS_ACL |
3614 | /* | |
3615 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3616 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3617 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3618 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3619 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3620 | * by caller | |
3621 | */ | |
3622 | static int | |
3623 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3624 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3625 | void **ret_buf) |
3626 | { | |
3627 | int rc; | |
3628 | __u32 temp_offset; | |
3629 | struct smb_com_ntransact_req *pSMB; | |
3630 | ||
3631 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3632 | (void **)&pSMB); | |
3633 | if (rc) | |
3634 | return rc; | |
3635 | *ret_buf = (void *)pSMB; | |
3636 | pSMB->Reserved = 0; | |
3637 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3638 | pSMB->TotalDataCount = 0; | |
c974befa | 3639 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3640 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3641 | pSMB->DataCount = pSMB->TotalDataCount; | |
3642 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3643 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3644 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3645 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3646 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3647 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3648 | return 0; | |
3649 | } | |
3650 | ||
3651 | static int | |
3652 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3653 | __u32 *pparmlen, __u32 *pdatalen) | |
3654 | { | |
3655 | char *end_of_smb; | |
3656 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3657 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3658 | u16 bcc; |
79df1bae JL |
3659 | |
3660 | *pdatalen = 0; | |
3661 | *pparmlen = 0; | |
3662 | ||
3663 | if (buf == NULL) | |
3664 | return -EINVAL; | |
3665 | ||
3666 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3667 | ||
820a803f JL |
3668 | bcc = get_bcc(&pSMBr->hdr); |
3669 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3670 | (char *)&pSMBr->ByteCount; |
3671 | ||
3672 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3673 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3674 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3675 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3676 | ||
3677 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3678 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3679 | ||
3680 | /* should we also check that parm and data areas do not overlap? */ | |
3681 | if (*ppparm > end_of_smb) { | |
f96637be | 3682 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3683 | return -EINVAL; |
3684 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3685 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3686 | return -EINVAL; |
3687 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3688 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3689 | return -EINVAL; |
3690 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3691 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3692 | *ppdata, data_count, (data_count + *ppdata), | |
3693 | end_of_smb, pSMBr); | |
79df1bae | 3694 | return -EINVAL; |
820a803f | 3695 | } else if (parm_count + data_count > bcc) { |
f96637be | 3696 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3697 | return -EINVAL; |
3698 | } | |
3699 | *pdatalen = data_count; | |
3700 | *pparmlen = parm_count; | |
3701 | return 0; | |
3702 | } | |
3703 | ||
0a4b92c0 SF |
3704 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3705 | int | |
6d5786a3 | 3706 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3707 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3708 | { |
3709 | int rc = 0; | |
3710 | int buf_type = 0; | |
ad7a2926 | 3711 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3712 | struct kvec iov[1]; |
3713 | ||
f96637be | 3714 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3715 | |
630f3f0c SF |
3716 | *pbuflen = 0; |
3717 | *acl_inf = NULL; | |
3718 | ||
b9c7a2bb | 3719 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3720 | 8 /* parm len */, tcon, (void **) &pSMB); |
3721 | if (rc) | |
3722 | return rc; | |
3723 | ||
3724 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3725 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3726 | pSMB->MaxSetupCount = 0; | |
3727 | pSMB->Fid = fid; /* file handle always le */ | |
3728 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3729 | CIFS_ACL_DACL); | |
3730 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3731 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3732 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3733 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3734 | |
a761ac57 | 3735 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3736 | 0); |
44c58186 | 3737 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3738 | if (rc) { |
f96637be | 3739 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3740 | } else { /* decode response */ |
ad7a2926 | 3741 | __le32 *parm; |
630f3f0c SF |
3742 | __u32 parm_len; |
3743 | __u32 acl_len; | |
50c2f753 | 3744 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3745 | char *pdata; |
0a4b92c0 SF |
3746 | |
3747 | /* validate_nttransact */ | |
50c2f753 | 3748 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3749 | &pdata, &parm_len, pbuflen); |
790fe579 | 3750 | if (rc) |
0a4b92c0 SF |
3751 | goto qsec_out; |
3752 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3753 | ||
f96637be JP |
3754 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3755 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3756 | |
3757 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3758 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3759 | *pbuflen = 0; |
0a4b92c0 SF |
3760 | goto qsec_out; |
3761 | } | |
3762 | ||
3763 | /* BB check that data area is minimum length and as big as acl_len */ | |
3764 | ||
af6f4612 | 3765 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3766 | if (acl_len != *pbuflen) { |
f96637be JP |
3767 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3768 | acl_len, *pbuflen); | |
630f3f0c SF |
3769 | if (*pbuflen > acl_len) |
3770 | *pbuflen = acl_len; | |
3771 | } | |
0a4b92c0 | 3772 | |
630f3f0c SF |
3773 | /* check if buffer is big enough for the acl |
3774 | header followed by the smallest SID */ | |
3775 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3776 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3777 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3778 | rc = -EINVAL; |
3779 | *pbuflen = 0; | |
3780 | } else { | |
f7f7c185 | 3781 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3782 | if (*acl_inf == NULL) { |
3783 | *pbuflen = 0; | |
3784 | rc = -ENOMEM; | |
3785 | } | |
630f3f0c | 3786 | } |
0a4b92c0 SF |
3787 | } |
3788 | qsec_out: | |
790fe579 | 3789 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3790 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3791 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3792 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3793 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3794 | return rc; |
3795 | } | |
97837582 SF |
3796 | |
3797 | int | |
6d5786a3 | 3798 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3799 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3800 | { |
3801 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3802 | int rc = 0; | |
3803 | int bytes_returned = 0; | |
3804 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3805 | void *pSMBr; |
97837582 SF |
3806 | |
3807 | setCifsAclRetry: | |
b2a3ad9c | 3808 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3809 | if (rc) |
b2a3ad9c | 3810 | return rc; |
97837582 SF |
3811 | |
3812 | pSMB->MaxSetupCount = 0; | |
3813 | pSMB->Reserved = 0; | |
3814 | ||
3815 | param_count = 8; | |
3816 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3817 | data_count = acllen; | |
3818 | data_offset = param_offset + param_count; | |
3819 | byte_count = 3 /* pad */ + param_count; | |
3820 | ||
3821 | pSMB->DataCount = cpu_to_le32(data_count); | |
3822 | pSMB->TotalDataCount = pSMB->DataCount; | |
3823 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3824 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3825 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3826 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3827 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3828 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3829 | pSMB->SetupCount = 0; | |
3830 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3831 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3832 | ||
3833 | pSMB->Fid = fid; /* file handle always le */ | |
3834 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3835 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3836 | |
3837 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3838 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3839 | data_offset, pntsd, acllen); | |
be8e3b00 | 3840 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3841 | } else |
be8e3b00 | 3842 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3843 | |
3844 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3845 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3846 | ||
f96637be JP |
3847 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3848 | bytes_returned, rc); | |
97837582 | 3849 | if (rc) |
f96637be | 3850 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3851 | cifs_buf_release(pSMB); |
3852 | ||
3853 | if (rc == -EAGAIN) | |
3854 | goto setCifsAclRetry; | |
3855 | ||
3856 | return (rc); | |
3857 | } | |
3858 | ||
79df1bae | 3859 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3860 | |
6b8edfe0 SF |
3861 | /* Legacy Query Path Information call for lookup to old servers such |
3862 | as Win9x/WinME */ | |
68889f26 PS |
3863 | int |
3864 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3865 | const char *search_name, FILE_ALL_INFO *data, | |
3866 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3867 | { |
ad7a2926 SF |
3868 | QUERY_INFORMATION_REQ *pSMB; |
3869 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3870 | int rc = 0; |
3871 | int bytes_returned; | |
3872 | int name_len; | |
3873 | ||
f96637be | 3874 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3875 | QInfRetry: |
3876 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3877 | (void **) &pSMBr); |
6b8edfe0 SF |
3878 | if (rc) |
3879 | return rc; | |
3880 | ||
3881 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3882 | name_len = | |
acbbb76a | 3883 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3884 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3885 | remap); |
6b8edfe0 SF |
3886 | name_len++; /* trailing null */ |
3887 | name_len *= 2; | |
50c2f753 | 3888 | } else { |
68889f26 | 3889 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3890 | name_len++; /* trailing null */ |
68889f26 | 3891 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3892 | } |
3893 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3894 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3895 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3896 | pSMB->ByteCount = cpu_to_le16(name_len); |
3897 | ||
3898 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3899 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3900 | if (rc) { |
f96637be | 3901 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3902 | } else if (data) { |
1bd5bbcb SF |
3903 | struct timespec ts; |
3904 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3905 | |
3906 | /* decode response */ | |
1bd5bbcb | 3907 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3908 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3909 | ts.tv_nsec = 0; |
3910 | ts.tv_sec = time; | |
3911 | /* decode time fields */ | |
68889f26 PS |
3912 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3913 | data->LastWriteTime = data->ChangeTime; | |
3914 | data->LastAccessTime = 0; | |
3915 | data->AllocationSize = | |
70ca734a | 3916 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3917 | data->EndOfFile = data->AllocationSize; |
3918 | data->Attributes = | |
70ca734a | 3919 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3920 | } else |
3921 | rc = -EIO; /* bad buffer passed in */ | |
3922 | ||
3923 | cifs_buf_release(pSMB); | |
3924 | ||
3925 | if (rc == -EAGAIN) | |
3926 | goto QInfRetry; | |
3927 | ||
3928 | return rc; | |
3929 | } | |
3930 | ||
bcd5357f | 3931 | int |
6d5786a3 | 3932 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3933 | u16 netfid, FILE_ALL_INFO *pFindData) |
3934 | { | |
3935 | struct smb_t2_qfi_req *pSMB = NULL; | |
3936 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3937 | int rc = 0; | |
3938 | int bytes_returned; | |
3939 | __u16 params, byte_count; | |
3940 | ||
3941 | QFileInfoRetry: | |
3942 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3943 | (void **) &pSMBr); | |
3944 | if (rc) | |
3945 | return rc; | |
3946 | ||
3947 | params = 2 /* level */ + 2 /* fid */; | |
3948 | pSMB->t2.TotalDataCount = 0; | |
3949 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3950 | /* BB find exact max data count below from sess structure BB */ | |
3951 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3952 | pSMB->t2.MaxSetupCount = 0; | |
3953 | pSMB->t2.Reserved = 0; | |
3954 | pSMB->t2.Flags = 0; | |
3955 | pSMB->t2.Timeout = 0; | |
3956 | pSMB->t2.Reserved2 = 0; | |
3957 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3958 | Fid) - 4); | |
3959 | pSMB->t2.DataCount = 0; | |
3960 | pSMB->t2.DataOffset = 0; | |
3961 | pSMB->t2.SetupCount = 1; | |
3962 | pSMB->t2.Reserved3 = 0; | |
3963 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3964 | byte_count = params + 1 /* pad */ ; | |
3965 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3966 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3967 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3968 | pSMB->Pad = 0; | |
3969 | pSMB->Fid = netfid; | |
be8e3b00 | 3970 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3971 | |
bcd5357f JL |
3972 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3973 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3974 | if (rc) { | |
f96637be | 3975 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
bcd5357f JL |
3976 | } else { /* decode response */ |
3977 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3978 | |
bcd5357f JL |
3979 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3980 | rc = -EIO; | |
820a803f | 3981 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3982 | rc = -EIO; /* bad smb */ |
3983 | else if (pFindData) { | |
3984 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3985 | memcpy((char *) pFindData, | |
3986 | (char *) &pSMBr->hdr.Protocol + | |
3987 | data_offset, sizeof(FILE_ALL_INFO)); | |
3988 | } else | |
3989 | rc = -ENOMEM; | |
3990 | } | |
3991 | cifs_buf_release(pSMB); | |
3992 | if (rc == -EAGAIN) | |
3993 | goto QFileInfoRetry; | |
6b8edfe0 | 3994 | |
bcd5357f JL |
3995 | return rc; |
3996 | } | |
6b8edfe0 | 3997 | |
1da177e4 | 3998 | int |
6d5786a3 | 3999 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4000 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4001 | int legacy /* old style infolevel */, |
737b758c | 4002 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4003 | { |
68889f26 | 4004 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4005 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4006 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4007 | int rc = 0; | |
4008 | int bytes_returned; | |
4009 | int name_len; | |
4010 | __u16 params, byte_count; | |
4011 | ||
f96637be | 4012 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4013 | QPathInfoRetry: |
4014 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4015 | (void **) &pSMBr); | |
4016 | if (rc) | |
4017 | return rc; | |
4018 | ||
4019 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4020 | name_len = | |
68889f26 | 4021 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4022 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4023 | name_len++; /* trailing null */ |
4024 | name_len *= 2; | |
50c2f753 | 4025 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4026 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4027 | name_len++; /* trailing null */ |
68889f26 | 4028 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4029 | } |
4030 | ||
50c2f753 | 4031 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4032 | pSMB->TotalDataCount = 0; |
4033 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4034 | /* BB find exact max SMB PDU from sess structure BB */ |
4035 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4036 | pSMB->MaxSetupCount = 0; |
4037 | pSMB->Reserved = 0; | |
4038 | pSMB->Flags = 0; | |
4039 | pSMB->Timeout = 0; | |
4040 | pSMB->Reserved2 = 0; | |
4041 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4042 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4043 | pSMB->DataCount = 0; |
4044 | pSMB->DataOffset = 0; | |
4045 | pSMB->SetupCount = 1; | |
4046 | pSMB->Reserved3 = 0; | |
4047 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4048 | byte_count = params + 1 /* pad */ ; | |
4049 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4050 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4051 | if (legacy) |
acf1a1b1 SF |
4052 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4053 | else | |
4054 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4055 | pSMB->Reserved4 = 0; |
be8e3b00 | 4056 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4057 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4058 | ||
4059 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4060 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4061 | if (rc) { | |
f96637be | 4062 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4063 | } else { /* decode response */ |
4064 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4065 | ||
acf1a1b1 SF |
4066 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4067 | rc = -EIO; | |
820a803f | 4068 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4069 | rc = -EIO; /* bad smb */ |
820a803f | 4070 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4071 | rc = -EIO; /* 24 or 26 expected but we do not read |
4072 | last field */ | |
68889f26 | 4073 | else if (data) { |
acf1a1b1 | 4074 | int size; |
1da177e4 | 4075 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4076 | |
68889f26 PS |
4077 | /* |
4078 | * On legacy responses we do not read the last field, | |
4079 | * EAsize, fortunately since it varies by subdialect and | |
4080 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4081 | * bytes depending but we don't care here. | |
4082 | */ | |
ad7a2926 | 4083 | if (legacy) |
acf1a1b1 SF |
4084 | size = sizeof(FILE_INFO_STANDARD); |
4085 | else | |
4086 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4087 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4088 | data_offset, size); |
1da177e4 LT |
4089 | } else |
4090 | rc = -ENOMEM; | |
4091 | } | |
4092 | cifs_buf_release(pSMB); | |
4093 | if (rc == -EAGAIN) | |
4094 | goto QPathInfoRetry; | |
4095 | ||
4096 | return rc; | |
4097 | } | |
4098 | ||
c8634fd3 | 4099 | int |
6d5786a3 | 4100 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4101 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4102 | { | |
4103 | struct smb_t2_qfi_req *pSMB = NULL; | |
4104 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4105 | int rc = 0; | |
4106 | int bytes_returned; | |
4107 | __u16 params, byte_count; | |
4108 | ||
4109 | UnixQFileInfoRetry: | |
4110 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4111 | (void **) &pSMBr); | |
4112 | if (rc) | |
4113 | return rc; | |
4114 | ||
4115 | params = 2 /* level */ + 2 /* fid */; | |
4116 | pSMB->t2.TotalDataCount = 0; | |
4117 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4118 | /* BB find exact max data count below from sess structure BB */ | |
4119 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4120 | pSMB->t2.MaxSetupCount = 0; | |
4121 | pSMB->t2.Reserved = 0; | |
4122 | pSMB->t2.Flags = 0; | |
4123 | pSMB->t2.Timeout = 0; | |
4124 | pSMB->t2.Reserved2 = 0; | |
4125 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4126 | Fid) - 4); | |
4127 | pSMB->t2.DataCount = 0; | |
4128 | pSMB->t2.DataOffset = 0; | |
4129 | pSMB->t2.SetupCount = 1; | |
4130 | pSMB->t2.Reserved3 = 0; | |
4131 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4132 | byte_count = params + 1 /* pad */ ; | |
4133 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4134 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4135 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4136 | pSMB->Pad = 0; | |
4137 | pSMB->Fid = netfid; | |
be8e3b00 | 4138 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4139 | |
4140 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4141 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4142 | if (rc) { | |
f96637be | 4143 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
c8634fd3 JL |
4144 | } else { /* decode response */ |
4145 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4146 | ||
820a803f | 4147 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4148 | 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 |
4149 | rc = -EIO; /* bad smb */ |
4150 | } else { | |
4151 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4152 | memcpy((char *) pFindData, | |
4153 | (char *) &pSMBr->hdr.Protocol + | |
4154 | data_offset, | |
4155 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4156 | } | |
4157 | } | |
4158 | ||
4159 | cifs_buf_release(pSMB); | |
4160 | if (rc == -EAGAIN) | |
4161 | goto UnixQFileInfoRetry; | |
4162 | ||
4163 | return rc; | |
4164 | } | |
4165 | ||
1da177e4 | 4166 | int |
6d5786a3 | 4167 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4168 | const unsigned char *searchName, |
582d21e5 | 4169 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4170 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4171 | { |
4172 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4173 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4174 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4175 | int rc = 0; | |
4176 | int bytes_returned = 0; | |
4177 | int name_len; | |
4178 | __u16 params, byte_count; | |
4179 | ||
f96637be | 4180 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4181 | UnixQPathInfoRetry: |
4182 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4183 | (void **) &pSMBr); | |
4184 | if (rc) | |
4185 | return rc; | |
4186 | ||
4187 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4188 | name_len = | |
acbbb76a SF |
4189 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4190 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4191 | name_len++; /* trailing null */ |
4192 | name_len *= 2; | |
50c2f753 | 4193 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4194 | name_len = strnlen(searchName, PATH_MAX); |
4195 | name_len++; /* trailing null */ | |
4196 | strncpy(pSMB->FileName, searchName, name_len); | |
4197 | } | |
4198 | ||
50c2f753 | 4199 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4200 | pSMB->TotalDataCount = 0; |
4201 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4202 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4203 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4204 | pSMB->MaxSetupCount = 0; |
4205 | pSMB->Reserved = 0; | |
4206 | pSMB->Flags = 0; | |
4207 | pSMB->Timeout = 0; | |
4208 | pSMB->Reserved2 = 0; | |
4209 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4210 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4211 | pSMB->DataCount = 0; |
4212 | pSMB->DataOffset = 0; | |
4213 | pSMB->SetupCount = 1; | |
4214 | pSMB->Reserved3 = 0; | |
4215 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4216 | byte_count = params + 1 /* pad */ ; | |
4217 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4218 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4219 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4220 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4221 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4222 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4223 | ||
4224 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4225 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4226 | if (rc) { | |
f96637be | 4227 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4228 | } else { /* decode response */ |
4229 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4230 | ||
820a803f | 4231 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4232 | 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 |
4233 | rc = -EIO; /* bad smb */ |
4234 | } else { | |
4235 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4236 | memcpy((char *) pFindData, | |
4237 | (char *) &pSMBr->hdr.Protocol + | |
4238 | data_offset, | |
630f3f0c | 4239 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4240 | } |
4241 | } | |
4242 | cifs_buf_release(pSMB); | |
4243 | if (rc == -EAGAIN) | |
4244 | goto UnixQPathInfoRetry; | |
4245 | ||
4246 | return rc; | |
4247 | } | |
4248 | ||
1da177e4 LT |
4249 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4250 | int | |
6d5786a3 | 4251 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4252 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4253 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4254 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4255 | { |
4256 | /* level 257 SMB_ */ | |
4257 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4258 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4259 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4260 | int rc = 0; |
4261 | int bytes_returned = 0; | |
c052e2b4 | 4262 | int name_len, remap; |
1da177e4 | 4263 | __u16 params, byte_count; |
c052e2b4 | 4264 | struct nls_table *nls_codepage; |
1da177e4 | 4265 | |
f96637be | 4266 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4267 | |
4268 | findFirstRetry: | |
4269 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4270 | (void **) &pSMBr); | |
4271 | if (rc) | |
4272 | return rc; | |
4273 | ||
c052e2b4 SP |
4274 | nls_codepage = cifs_sb->local_nls; |
4275 | remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; | |
4276 | ||
1da177e4 LT |
4277 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4278 | name_len = | |
acbbb76a SF |
4279 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4280 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4281 | /* We can not add the asterik earlier in case |
4282 | it got remapped to 0xF03A as if it were part of the | |
4283 | directory name instead of a wildcard */ | |
1da177e4 | 4284 | name_len *= 2; |
c052e2b4 SP |
4285 | if (msearch) { |
4286 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4287 | pSMB->FileName[name_len+1] = 0; | |
4288 | pSMB->FileName[name_len+2] = '*'; | |
4289 | pSMB->FileName[name_len+3] = 0; | |
4290 | name_len += 4; /* now the trailing null */ | |
4291 | /* null terminate just in case */ | |
4292 | pSMB->FileName[name_len] = 0; | |
4293 | pSMB->FileName[name_len+1] = 0; | |
4294 | name_len += 2; | |
4295 | } | |
1da177e4 LT |
4296 | } else { /* BB add check for overrun of SMB buf BB */ |
4297 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4298 | /* BB fix here and in unicode clause above ie |
790fe579 | 4299 | if (name_len > buffersize-header) |
1da177e4 LT |
4300 | free buffer exit; BB */ |
4301 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4302 | if (msearch) { |
4303 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4304 | pSMB->FileName[name_len+1] = '*'; | |
4305 | pSMB->FileName[name_len+2] = 0; | |
4306 | name_len += 3; | |
4307 | } | |
1da177e4 LT |
4308 | } |
4309 | ||
4310 | params = 12 + name_len /* includes null */ ; | |
4311 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4312 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4313 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4314 | pSMB->MaxSetupCount = 0; |
4315 | pSMB->Reserved = 0; | |
4316 | pSMB->Flags = 0; | |
4317 | pSMB->Timeout = 0; | |
4318 | pSMB->Reserved2 = 0; | |
4319 | byte_count = params + 1 /* pad */ ; | |
4320 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4321 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4322 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4323 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4324 | - 4); | |
1da177e4 LT |
4325 | pSMB->DataCount = 0; |
4326 | pSMB->DataOffset = 0; | |
4327 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4328 | pSMB->Reserved3 = 0; | |
4329 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4330 | pSMB->SearchAttributes = | |
4331 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4332 | ATTR_DIRECTORY); | |
50c2f753 | 4333 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4334 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4335 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4336 | ||
4337 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4338 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4339 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4340 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4341 | ||
4342 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4343 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4344 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4345 | |
88274815 SF |
4346 | if (rc) {/* BB add logic to retry regular search if Unix search |
4347 | rejected unexpectedly by server */ | |
1da177e4 | 4348 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4349 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4350 | |
88274815 | 4351 | cifs_buf_release(pSMB); |
1da177e4 LT |
4352 | |
4353 | /* BB eventually could optimize out free and realloc of buf */ | |
4354 | /* for this case */ | |
4355 | if (rc == -EAGAIN) | |
4356 | goto findFirstRetry; | |
4357 | } else { /* decode response */ | |
4358 | /* BB remember to free buffer if error BB */ | |
4359 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4360 | if (rc == 0) { |
b77d753c SF |
4361 | unsigned int lnoff; |
4362 | ||
1da177e4 | 4363 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4364 | psrch_inf->unicode = true; |
1da177e4 | 4365 | else |
4b18f2a9 | 4366 | psrch_inf->unicode = false; |
1da177e4 LT |
4367 | |
4368 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4369 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4370 | psrch_inf->srch_entries_start = |
4371 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4372 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4373 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4374 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4375 | ||
790fe579 | 4376 | if (parms->EndofSearch) |
4b18f2a9 | 4377 | psrch_inf->endOfSearch = true; |
1da177e4 | 4378 | else |
4b18f2a9 | 4379 | psrch_inf->endOfSearch = false; |
1da177e4 | 4380 | |
50c2f753 SF |
4381 | psrch_inf->entries_in_buffer = |
4382 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4383 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4384 | psrch_inf->entries_in_buffer; |
b77d753c | 4385 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4386 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4387 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4388 | psrch_inf->last_entry = NULL; |
4389 | return rc; | |
4390 | } | |
4391 | ||
0752f152 | 4392 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4393 | lnoff; |
4394 | ||
c052e2b4 SP |
4395 | if (pnetfid) |
4396 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4397 | } else { |
4398 | cifs_buf_release(pSMB); | |
4399 | } | |
4400 | } | |
4401 | ||
4402 | return rc; | |
4403 | } | |
4404 | ||
6d5786a3 PS |
4405 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4406 | __u16 searchHandle, __u16 search_flags, | |
4407 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4408 | { |
4409 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4410 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4411 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4412 | char *response_data; |
4413 | int rc = 0; | |
9438fabb JL |
4414 | int bytes_returned; |
4415 | unsigned int name_len; | |
1da177e4 LT |
4416 | __u16 params, byte_count; |
4417 | ||
f96637be | 4418 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4419 | |
4b18f2a9 | 4420 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4421 | return -ENOENT; |
4422 | ||
4423 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4424 | (void **) &pSMBr); | |
4425 | if (rc) | |
4426 | return rc; | |
4427 | ||
50c2f753 | 4428 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4429 | byte_count = 0; |
4430 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4431 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4432 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4433 | pSMB->MaxSetupCount = 0; |
4434 | pSMB->Reserved = 0; | |
4435 | pSMB->Flags = 0; | |
4436 | pSMB->Timeout = 0; | |
4437 | pSMB->Reserved2 = 0; | |
4438 | pSMB->ParameterOffset = cpu_to_le16( | |
4439 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4440 | pSMB->DataCount = 0; | |
4441 | pSMB->DataOffset = 0; | |
4442 | pSMB->SetupCount = 1; | |
4443 | pSMB->Reserved3 = 0; | |
4444 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4445 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4446 | pSMB->SearchCount = | |
630f3f0c | 4447 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4448 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4449 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4450 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4451 | |
4452 | name_len = psrch_inf->resume_name_len; | |
4453 | params += name_len; | |
790fe579 | 4454 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4455 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4456 | byte_count += name_len; | |
ef6724e3 SF |
4457 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4458 | pSMB->ResumeFileName[name_len] = 0; | |
4459 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4460 | } else { |
4461 | rc = -EINVAL; | |
4462 | goto FNext2_err_exit; | |
4463 | } | |
4464 | byte_count = params + 1 /* pad */ ; | |
4465 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4466 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4467 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4468 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4469 | |
1da177e4 LT |
4470 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4471 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4472 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4473 | if (rc) { |
4474 | if (rc == -EBADF) { | |
4b18f2a9 | 4475 | psrch_inf->endOfSearch = true; |
6353450a | 4476 | cifs_buf_release(pSMB); |
50c2f753 | 4477 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4478 | } else |
f96637be | 4479 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4480 | } else { /* decode response */ |
4481 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4482 | |
790fe579 | 4483 | if (rc == 0) { |
b77d753c SF |
4484 | unsigned int lnoff; |
4485 | ||
1da177e4 LT |
4486 | /* BB fixme add lock for file (srch_info) struct here */ |
4487 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4488 | psrch_inf->unicode = true; |
1da177e4 | 4489 | else |
4b18f2a9 | 4490 | psrch_inf->unicode = false; |
1da177e4 LT |
4491 | response_data = (char *) &pSMBr->hdr.Protocol + |
4492 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4493 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4494 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4495 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4496 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4497 | cifs_small_buf_release( |
4498 | psrch_inf->ntwrk_buf_start); | |
4499 | else | |
4500 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4501 | psrch_inf->srch_entries_start = response_data; |
4502 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4503 | psrch_inf->smallBuf = 0; |
790fe579 | 4504 | if (parms->EndofSearch) |
4b18f2a9 | 4505 | psrch_inf->endOfSearch = true; |
1da177e4 | 4506 | else |
4b18f2a9 | 4507 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4508 | psrch_inf->entries_in_buffer = |
4509 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4510 | psrch_inf->index_of_last_entry += |
4511 | psrch_inf->entries_in_buffer; | |
b77d753c | 4512 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4513 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4514 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4515 | psrch_inf->last_entry = NULL; |
4516 | return rc; | |
4517 | } else | |
4518 | psrch_inf->last_entry = | |
4519 | psrch_inf->srch_entries_start + lnoff; | |
4520 | ||
f96637be JP |
4521 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4522 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4523 | |
4524 | /* BB fixme add unlock here */ | |
4525 | } | |
4526 | ||
4527 | } | |
4528 | ||
4529 | /* BB On error, should we leave previous search buf (and count and | |
4530 | last entry fields) intact or free the previous one? */ | |
4531 | ||
4532 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4533 | since file handle passed in no longer valid */ | |
4534 | FNext2_err_exit: | |
4535 | if (rc != 0) | |
4536 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4537 | return rc; |
4538 | } | |
4539 | ||
4540 | int | |
6d5786a3 | 4541 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4542 | const __u16 searchHandle) |
1da177e4 LT |
4543 | { |
4544 | int rc = 0; | |
4545 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4546 | |
f96637be | 4547 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4548 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4549 | ||
4550 | /* no sense returning error if session restarted | |
4551 | as file handle has been closed */ | |
790fe579 | 4552 | if (rc == -EAGAIN) |
1da177e4 LT |
4553 | return 0; |
4554 | if (rc) | |
4555 | return rc; | |
4556 | ||
1da177e4 LT |
4557 | pSMB->FileID = searchHandle; |
4558 | pSMB->ByteCount = 0; | |
792af7b0 | 4559 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4560 | if (rc) |
f96637be | 4561 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4562 | |
44c58186 | 4563 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4564 | |
4565 | /* Since session is dead, search handle closed on server already */ | |
4566 | if (rc == -EAGAIN) | |
4567 | rc = 0; | |
4568 | ||
4569 | return rc; | |
4570 | } | |
4571 | ||
1da177e4 | 4572 | int |
6d5786a3 | 4573 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4574 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4575 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4576 | { |
4577 | int rc = 0; | |
4578 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4579 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4580 | int name_len, bytes_returned; | |
4581 | __u16 params, byte_count; | |
4582 | ||
f96637be | 4583 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4584 | if (tcon == NULL) |
50c2f753 | 4585 | return -ENODEV; |
1da177e4 LT |
4586 | |
4587 | GetInodeNumberRetry: | |
4588 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4589 | (void **) &pSMBr); |
1da177e4 LT |
4590 | if (rc) |
4591 | return rc; | |
4592 | ||
1da177e4 LT |
4593 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4594 | name_len = | |
acbbb76a | 4595 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4596 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4597 | remap); |
1da177e4 LT |
4598 | name_len++; /* trailing null */ |
4599 | name_len *= 2; | |
50c2f753 | 4600 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4601 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4602 | name_len++; /* trailing null */ |
1208ef1f | 4603 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4604 | } |
4605 | ||
4606 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4607 | pSMB->TotalDataCount = 0; | |
4608 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4609 | /* BB find exact max data count below from sess structure BB */ | |
4610 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4611 | pSMB->MaxSetupCount = 0; | |
4612 | pSMB->Reserved = 0; | |
4613 | pSMB->Flags = 0; | |
4614 | pSMB->Timeout = 0; | |
4615 | pSMB->Reserved2 = 0; | |
4616 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4617 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4618 | pSMB->DataCount = 0; |
4619 | pSMB->DataOffset = 0; | |
4620 | pSMB->SetupCount = 1; | |
4621 | pSMB->Reserved3 = 0; | |
4622 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4623 | byte_count = params + 1 /* pad */ ; | |
4624 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4625 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4626 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4627 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4628 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4629 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4630 | ||
4631 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4632 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4633 | if (rc) { | |
f96637be | 4634 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4635 | } else { |
4636 | /* decode response */ | |
4637 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4638 | /* BB also check enough total bytes returned */ |
820a803f | 4639 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4640 | /* If rc should we check for EOPNOSUPP and |
4641 | disable the srvino flag? or in caller? */ | |
4642 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4643 | else { |
1da177e4 LT |
4644 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4645 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4646 | struct file_internal_info *pfinfo; |
1da177e4 | 4647 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4648 | if (count < 8) { |
f96637be | 4649 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4650 | rc = -EIO; |
4651 | goto GetInodeNumOut; | |
4652 | } | |
4653 | pfinfo = (struct file_internal_info *) | |
4654 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4655 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4656 | } |
4657 | } | |
4658 | GetInodeNumOut: | |
4659 | cifs_buf_release(pSMB); | |
4660 | if (rc == -EAGAIN) | |
4661 | goto GetInodeNumberRetry; | |
4662 | return rc; | |
4663 | } | |
1da177e4 | 4664 | |
fec4585f IM |
4665 | /* parses DFS refferal V3 structure |
4666 | * caller is responsible for freeing target_nodes | |
4667 | * returns: | |
4668 | * on success - 0 | |
4669 | * on failure - errno | |
4670 | */ | |
4671 | static int | |
a1fe78f1 | 4672 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4673 | unsigned int *num_of_nodes, |
4674 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4675 | const struct nls_table *nls_codepage, int remap, |
4676 | const char *searchName) | |
fec4585f IM |
4677 | { |
4678 | int i, rc = 0; | |
4679 | char *data_end; | |
4680 | bool is_unicode; | |
4681 | struct dfs_referral_level_3 *ref; | |
4682 | ||
5ca33c6a HH |
4683 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4684 | is_unicode = true; | |
4685 | else | |
4686 | is_unicode = false; | |
fec4585f IM |
4687 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4688 | ||
4689 | if (*num_of_nodes < 1) { | |
f96637be JP |
4690 | cifs_dbg(VFS, "num_referrals: must be at least > 0, but we get num_referrals = %d\n", |
4691 | *num_of_nodes); | |
fec4585f | 4692 | rc = -EINVAL; |
a1fe78f1 | 4693 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4694 | } |
4695 | ||
4696 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4697 | if (ref->VersionNumber != cpu_to_le16(3)) { |
f96637be JP |
4698 | cifs_dbg(VFS, "Referrals of V%d version are not supported, should be V3\n", |
4699 | le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4700 | rc = -EINVAL; |
a1fe78f1 | 4701 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4702 | } |
4703 | ||
4704 | /* get the upper boundary of the resp buffer */ | |
4705 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4706 | le16_to_cpu(pSMBr->t2.DataCount); | |
4707 | ||
f96637be JP |
4708 | cifs_dbg(FYI, "num_referrals: %d dfs flags: 0x%x ...\n", |
4709 | *num_of_nodes, le32_to_cpu(pSMBr->DFSFlags)); | |
fec4585f | 4710 | |
f96637be JP |
4711 | *target_nodes = kcalloc(*num_of_nodes, sizeof(struct dfs_info3_param), |
4712 | GFP_KERNEL); | |
fec4585f | 4713 | if (*target_nodes == NULL) { |
fec4585f | 4714 | rc = -ENOMEM; |
a1fe78f1 | 4715 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4716 | } |
4717 | ||
3ad2f3fb | 4718 | /* collect necessary data from referrals */ |
fec4585f IM |
4719 | for (i = 0; i < *num_of_nodes; i++) { |
4720 | char *temp; | |
4721 | int max_len; | |
4722 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4723 | ||
0e0d2cf3 | 4724 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4725 | if (is_unicode) { |
331c3135 JL |
4726 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4727 | GFP_KERNEL); | |
2920ee2b SF |
4728 | if (tmp == NULL) { |
4729 | rc = -ENOMEM; | |
4730 | goto parse_DFS_referrals_exit; | |
4731 | } | |
acbbb76a SF |
4732 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4733 | PATH_MAX, nls_codepage, remap); | |
4734 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4735 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4736 | nls_codepage); |
4737 | kfree(tmp); | |
4738 | } else | |
4739 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4740 | ||
fec4585f IM |
4741 | node->server_type = le16_to_cpu(ref->ServerType); |
4742 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4743 | ||
4744 | /* copy DfsPath */ | |
4745 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4746 | max_len = data_end - temp; | |
acbbb76a SF |
4747 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4748 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4749 | if (!node->path_name) { |
4750 | rc = -ENOMEM; | |
a1fe78f1 | 4751 | goto parse_DFS_referrals_exit; |
066ce689 | 4752 | } |
fec4585f IM |
4753 | |
4754 | /* copy link target UNC */ | |
4755 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4756 | max_len = data_end - temp; | |
acbbb76a SF |
4757 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4758 | is_unicode, nls_codepage); | |
d8f2799b | 4759 | if (!node->node_name) { |
d8e2f53a | 4760 | rc = -ENOMEM; |
d8f2799b SM |
4761 | goto parse_DFS_referrals_exit; |
4762 | } | |
4763 | ||
4764 | ref++; | |
fec4585f IM |
4765 | } |
4766 | ||
a1fe78f1 | 4767 | parse_DFS_referrals_exit: |
fec4585f IM |
4768 | if (rc) { |
4769 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4770 | *target_nodes = NULL; | |
4771 | *num_of_nodes = 0; | |
4772 | } | |
4773 | return rc; | |
4774 | } | |
4775 | ||
1da177e4 | 4776 | int |
6d5786a3 | 4777 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4778 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4779 | unsigned int *num_of_nodes, |
737b758c | 4780 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4781 | { |
4782 | /* TRANS2_GET_DFS_REFERRAL */ | |
4783 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4784 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4785 | int rc = 0; |
4786 | int bytes_returned; | |
4787 | int name_len; | |
1da177e4 | 4788 | __u16 params, byte_count; |
c2cf07d5 SF |
4789 | *num_of_nodes = 0; |
4790 | *target_nodes = NULL; | |
1da177e4 | 4791 | |
f96637be | 4792 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4793 | if (ses == NULL) |
4794 | return -ENODEV; | |
4795 | getDFSRetry: | |
4796 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4797 | (void **) &pSMBr); | |
4798 | if (rc) | |
4799 | return rc; | |
50c2f753 SF |
4800 | |
4801 | /* server pointer checked in called function, | |
1982c344 | 4802 | but should never be null here anyway */ |
88257360 | 4803 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4804 | pSMB->hdr.Tid = ses->ipc_tid; |
4805 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4806 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4807 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4808 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4809 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4810 | |
4811 | if (ses->capabilities & CAP_UNICODE) { | |
4812 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4813 | name_len = | |
acbbb76a | 4814 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4815 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4816 | remap); |
1da177e4 LT |
4817 | name_len++; /* trailing null */ |
4818 | name_len *= 2; | |
50c2f753 | 4819 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4820 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4821 | name_len++; /* trailing null */ |
b669f33c | 4822 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4823 | } |
4824 | ||
790fe579 | 4825 | if (ses->server) { |
96daf2b0 | 4826 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4827 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4828 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4829 | } | |
4830 | ||
50c2f753 | 4831 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4832 | |
1da177e4 LT |
4833 | params = 2 /* level */ + name_len /*includes null */ ; |
4834 | pSMB->TotalDataCount = 0; | |
4835 | pSMB->DataCount = 0; | |
4836 | pSMB->DataOffset = 0; | |
4837 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4838 | /* BB find exact max SMB PDU from sess structure BB */ |
4839 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4840 | pSMB->MaxSetupCount = 0; |
4841 | pSMB->Reserved = 0; | |
4842 | pSMB->Flags = 0; | |
4843 | pSMB->Timeout = 0; | |
4844 | pSMB->Reserved2 = 0; | |
4845 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4846 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4847 | pSMB->SetupCount = 1; |
4848 | pSMB->Reserved3 = 0; | |
4849 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4850 | byte_count = params + 3 /* pad */ ; | |
4851 | pSMB->ParameterCount = cpu_to_le16(params); | |
4852 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4853 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4854 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4855 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4856 | ||
4857 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4858 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4859 | if (rc) { | |
f96637be | 4860 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4861 | goto GetDFSRefExit; |
4862 | } | |
4863 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4864 | |
c2cf07d5 | 4865 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4866 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4867 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4868 | goto GetDFSRefExit; |
4869 | } | |
c2cf07d5 | 4870 | |
f96637be JP |
4871 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4872 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4873 | |
fec4585f | 4874 | /* parse returned result into more usable form */ |
a1fe78f1 | 4875 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4876 | target_nodes, nls_codepage, remap, |
b669f33c | 4877 | search_name); |
c2cf07d5 | 4878 | |
1da177e4 | 4879 | GetDFSRefExit: |
0d817bc0 | 4880 | cifs_buf_release(pSMB); |
1da177e4 LT |
4881 | |
4882 | if (rc == -EAGAIN) | |
4883 | goto getDFSRetry; | |
4884 | ||
4885 | return rc; | |
4886 | } | |
4887 | ||
20962438 SF |
4888 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4889 | int | |
6d5786a3 PS |
4890 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4891 | struct kstatfs *FSData) | |
20962438 SF |
4892 | { |
4893 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4894 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4895 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4896 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4897 | int rc = 0; | |
4898 | int bytes_returned = 0; | |
4899 | __u16 params, byte_count; | |
4900 | ||
f96637be | 4901 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4902 | oldQFSInfoRetry: |
4903 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4904 | (void **) &pSMBr); | |
4905 | if (rc) | |
4906 | return rc; | |
20962438 SF |
4907 | |
4908 | params = 2; /* level */ | |
4909 | pSMB->TotalDataCount = 0; | |
4910 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4911 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4912 | pSMB->MaxSetupCount = 0; | |
4913 | pSMB->Reserved = 0; | |
4914 | pSMB->Flags = 0; | |
4915 | pSMB->Timeout = 0; | |
4916 | pSMB->Reserved2 = 0; | |
4917 | byte_count = params + 1 /* pad */ ; | |
4918 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4919 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4920 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4921 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4922 | pSMB->DataCount = 0; | |
4923 | pSMB->DataOffset = 0; | |
4924 | pSMB->SetupCount = 1; | |
4925 | pSMB->Reserved3 = 0; | |
4926 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4927 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4928 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4929 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4930 | ||
4931 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4932 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4933 | if (rc) { | |
f96637be | 4934 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4935 | } else { /* decode response */ |
4936 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4937 | ||
820a803f | 4938 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4939 | rc = -EIO; /* bad smb */ |
4940 | else { | |
4941 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4942 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4943 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4944 | |
50c2f753 | 4945 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4946 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4947 | FSData->f_bsize = | |
4948 | le16_to_cpu(response_data->BytesPerSector) * | |
4949 | le32_to_cpu(response_data-> | |
4950 | SectorsPerAllocationUnit); | |
4951 | FSData->f_blocks = | |
50c2f753 | 4952 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4953 | FSData->f_bfree = FSData->f_bavail = |
4954 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4955 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4956 | (unsigned long long)FSData->f_blocks, | |
4957 | (unsigned long long)FSData->f_bfree, | |
4958 | FSData->f_bsize); | |
20962438 SF |
4959 | } |
4960 | } | |
4961 | cifs_buf_release(pSMB); | |
4962 | ||
4963 | if (rc == -EAGAIN) | |
4964 | goto oldQFSInfoRetry; | |
4965 | ||
4966 | return rc; | |
4967 | } | |
4968 | ||
1da177e4 | 4969 | int |
6d5786a3 PS |
4970 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4971 | struct kstatfs *FSData) | |
1da177e4 LT |
4972 | { |
4973 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4974 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4975 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4976 | FILE_SYSTEM_INFO *response_data; | |
4977 | int rc = 0; | |
4978 | int bytes_returned = 0; | |
4979 | __u16 params, byte_count; | |
4980 | ||
f96637be | 4981 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4982 | QFSInfoRetry: |
4983 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4984 | (void **) &pSMBr); | |
4985 | if (rc) | |
4986 | return rc; | |
4987 | ||
4988 | params = 2; /* level */ | |
4989 | pSMB->TotalDataCount = 0; | |
4990 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4991 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4992 | pSMB->MaxSetupCount = 0; |
4993 | pSMB->Reserved = 0; | |
4994 | pSMB->Flags = 0; | |
4995 | pSMB->Timeout = 0; | |
4996 | pSMB->Reserved2 = 0; | |
4997 | byte_count = params + 1 /* pad */ ; | |
4998 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4999 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5000 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5001 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5002 | pSMB->DataCount = 0; |
5003 | pSMB->DataOffset = 0; | |
5004 | pSMB->SetupCount = 1; | |
5005 | pSMB->Reserved3 = 0; | |
5006 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5007 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5008 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5009 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5010 | ||
5011 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5012 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5013 | if (rc) { | |
f96637be | 5014 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5015 | } else { /* decode response */ |
50c2f753 | 5016 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5017 | |
820a803f | 5018 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5019 | rc = -EIO; /* bad smb */ |
5020 | else { | |
5021 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5022 | |
5023 | response_data = | |
5024 | (FILE_SYSTEM_INFO | |
5025 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5026 | data_offset); | |
5027 | FSData->f_bsize = | |
5028 | le32_to_cpu(response_data->BytesPerSector) * | |
5029 | le32_to_cpu(response_data-> | |
5030 | SectorsPerAllocationUnit); | |
5031 | FSData->f_blocks = | |
5032 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5033 | FSData->f_bfree = FSData->f_bavail = | |
5034 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5035 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5036 | (unsigned long long)FSData->f_blocks, | |
5037 | (unsigned long long)FSData->f_bfree, | |
5038 | FSData->f_bsize); | |
1da177e4 LT |
5039 | } |
5040 | } | |
5041 | cifs_buf_release(pSMB); | |
5042 | ||
5043 | if (rc == -EAGAIN) | |
5044 | goto QFSInfoRetry; | |
5045 | ||
5046 | return rc; | |
5047 | } | |
5048 | ||
5049 | int | |
6d5786a3 | 5050 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5051 | { |
5052 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5053 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5054 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5055 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5056 | int rc = 0; | |
5057 | int bytes_returned = 0; | |
5058 | __u16 params, byte_count; | |
5059 | ||
f96637be | 5060 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5061 | QFSAttributeRetry: |
5062 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5063 | (void **) &pSMBr); | |
5064 | if (rc) | |
5065 | return rc; | |
5066 | ||
5067 | params = 2; /* level */ | |
5068 | pSMB->TotalDataCount = 0; | |
5069 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5070 | /* BB find exact max SMB PDU from sess structure BB */ |
5071 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5072 | pSMB->MaxSetupCount = 0; |
5073 | pSMB->Reserved = 0; | |
5074 | pSMB->Flags = 0; | |
5075 | pSMB->Timeout = 0; | |
5076 | pSMB->Reserved2 = 0; | |
5077 | byte_count = params + 1 /* pad */ ; | |
5078 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5079 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5080 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5081 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5082 | pSMB->DataCount = 0; |
5083 | pSMB->DataOffset = 0; | |
5084 | pSMB->SetupCount = 1; | |
5085 | pSMB->Reserved3 = 0; | |
5086 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5087 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5088 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5089 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5090 | ||
5091 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5092 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5093 | if (rc) { | |
f96637be | 5094 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5095 | } else { /* decode response */ |
5096 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5097 | ||
820a803f | 5098 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5099 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5100 | rc = -EIO; /* bad smb */ |
5101 | } else { | |
5102 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5103 | response_data = | |
5104 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5105 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5106 | data_offset); | |
5107 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5108 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5109 | } |
5110 | } | |
5111 | cifs_buf_release(pSMB); | |
5112 | ||
5113 | if (rc == -EAGAIN) | |
5114 | goto QFSAttributeRetry; | |
5115 | ||
5116 | return rc; | |
5117 | } | |
5118 | ||
5119 | int | |
6d5786a3 | 5120 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5121 | { |
5122 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5123 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5124 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5125 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5126 | int rc = 0; | |
5127 | int bytes_returned = 0; | |
5128 | __u16 params, byte_count; | |
5129 | ||
f96637be | 5130 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5131 | QFSDeviceRetry: |
5132 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5133 | (void **) &pSMBr); | |
5134 | if (rc) | |
5135 | return rc; | |
5136 | ||
5137 | params = 2; /* level */ | |
5138 | pSMB->TotalDataCount = 0; | |
5139 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5140 | /* BB find exact max SMB PDU from sess structure BB */ |
5141 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5142 | pSMB->MaxSetupCount = 0; |
5143 | pSMB->Reserved = 0; | |
5144 | pSMB->Flags = 0; | |
5145 | pSMB->Timeout = 0; | |
5146 | pSMB->Reserved2 = 0; | |
5147 | byte_count = params + 1 /* pad */ ; | |
5148 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5149 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5150 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5151 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5152 | |
5153 | pSMB->DataCount = 0; | |
5154 | pSMB->DataOffset = 0; | |
5155 | pSMB->SetupCount = 1; | |
5156 | pSMB->Reserved3 = 0; | |
5157 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5158 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5159 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5160 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5161 | ||
5162 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5163 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5164 | if (rc) { | |
f96637be | 5165 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5166 | } else { /* decode response */ |
5167 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5168 | ||
820a803f JL |
5169 | if (rc || get_bcc(&pSMBr->hdr) < |
5170 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5171 | rc = -EIO; /* bad smb */ |
5172 | else { | |
5173 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5174 | response_data = | |
737b758c SF |
5175 | (FILE_SYSTEM_DEVICE_INFO *) |
5176 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5177 | data_offset); |
5178 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5179 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5180 | } |
5181 | } | |
5182 | cifs_buf_release(pSMB); | |
5183 | ||
5184 | if (rc == -EAGAIN) | |
5185 | goto QFSDeviceRetry; | |
5186 | ||
5187 | return rc; | |
5188 | } | |
5189 | ||
5190 | int | |
6d5786a3 | 5191 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5192 | { |
5193 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5194 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5195 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5196 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5197 | int rc = 0; | |
5198 | int bytes_returned = 0; | |
5199 | __u16 params, byte_count; | |
5200 | ||
f96637be | 5201 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5202 | QFSUnixRetry: |
f569599a JL |
5203 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5204 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5205 | if (rc) |
5206 | return rc; | |
5207 | ||
5208 | params = 2; /* level */ | |
5209 | pSMB->TotalDataCount = 0; | |
5210 | pSMB->DataCount = 0; | |
5211 | pSMB->DataOffset = 0; | |
5212 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5213 | /* BB find exact max SMB PDU from sess structure BB */ |
5214 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5215 | pSMB->MaxSetupCount = 0; |
5216 | pSMB->Reserved = 0; | |
5217 | pSMB->Flags = 0; | |
5218 | pSMB->Timeout = 0; | |
5219 | pSMB->Reserved2 = 0; | |
5220 | byte_count = params + 1 /* pad */ ; | |
5221 | pSMB->ParameterCount = cpu_to_le16(params); | |
5222 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5223 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5224 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5225 | pSMB->SetupCount = 1; |
5226 | pSMB->Reserved3 = 0; | |
5227 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5228 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5229 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5230 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5231 | ||
5232 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5233 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5234 | if (rc) { | |
f96637be | 5235 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5236 | } else { /* decode response */ |
5237 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5238 | ||
820a803f | 5239 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5240 | rc = -EIO; /* bad smb */ |
5241 | } else { | |
5242 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5243 | response_data = | |
5244 | (FILE_SYSTEM_UNIX_INFO | |
5245 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5246 | data_offset); | |
5247 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5248 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5249 | } |
5250 | } | |
5251 | cifs_buf_release(pSMB); | |
5252 | ||
5253 | if (rc == -EAGAIN) | |
5254 | goto QFSUnixRetry; | |
5255 | ||
5256 | ||
5257 | return rc; | |
5258 | } | |
5259 | ||
ac67055e | 5260 | int |
6d5786a3 | 5261 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5262 | { |
5263 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5264 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5265 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5266 | int rc = 0; | |
5267 | int bytes_returned = 0; | |
5268 | __u16 params, param_offset, offset, byte_count; | |
5269 | ||
f96637be | 5270 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5271 | SETFSUnixRetry: |
f26282c9 | 5272 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5273 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5274 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5275 | if (rc) |
5276 | return rc; | |
5277 | ||
5278 | params = 4; /* 2 bytes zero followed by info level. */ | |
5279 | pSMB->MaxSetupCount = 0; | |
5280 | pSMB->Reserved = 0; | |
5281 | pSMB->Flags = 0; | |
5282 | pSMB->Timeout = 0; | |
5283 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5284 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5285 | - 4; | |
ac67055e JA |
5286 | offset = param_offset + params; |
5287 | ||
5288 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5289 | /* BB find exact max SMB PDU from sess structure BB */ |
5290 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5291 | pSMB->SetupCount = 1; |
5292 | pSMB->Reserved3 = 0; | |
5293 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5294 | byte_count = 1 /* pad */ + params + 12; | |
5295 | ||
5296 | pSMB->DataCount = cpu_to_le16(12); | |
5297 | pSMB->ParameterCount = cpu_to_le16(params); | |
5298 | pSMB->TotalDataCount = pSMB->DataCount; | |
5299 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5300 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5301 | pSMB->DataOffset = cpu_to_le16(offset); | |
5302 | ||
5303 | /* Params. */ | |
5304 | pSMB->FileNum = 0; | |
5305 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5306 | ||
5307 | /* Data. */ | |
5308 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5309 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5310 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5311 | ||
be8e3b00 | 5312 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5313 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5314 | ||
5315 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5316 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5317 | if (rc) { | |
f96637be | 5318 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5319 | } else { /* decode response */ |
5320 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5321 | if (rc) |
ac67055e | 5322 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5323 | } |
5324 | cifs_buf_release(pSMB); | |
5325 | ||
5326 | if (rc == -EAGAIN) | |
5327 | goto SETFSUnixRetry; | |
5328 | ||
5329 | return rc; | |
5330 | } | |
5331 | ||
5332 | ||
1da177e4 LT |
5333 | |
5334 | int | |
6d5786a3 | 5335 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5336 | struct kstatfs *FSData) |
1da177e4 LT |
5337 | { |
5338 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5339 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5340 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5341 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5342 | int rc = 0; | |
5343 | int bytes_returned = 0; | |
5344 | __u16 params, byte_count; | |
5345 | ||
f96637be | 5346 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5347 | QFSPosixRetry: |
5348 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5349 | (void **) &pSMBr); | |
5350 | if (rc) | |
5351 | return rc; | |
5352 | ||
5353 | params = 2; /* level */ | |
5354 | pSMB->TotalDataCount = 0; | |
5355 | pSMB->DataCount = 0; | |
5356 | pSMB->DataOffset = 0; | |
5357 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5358 | /* BB find exact max SMB PDU from sess structure BB */ |
5359 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5360 | pSMB->MaxSetupCount = 0; |
5361 | pSMB->Reserved = 0; | |
5362 | pSMB->Flags = 0; | |
5363 | pSMB->Timeout = 0; | |
5364 | pSMB->Reserved2 = 0; | |
5365 | byte_count = params + 1 /* pad */ ; | |
5366 | pSMB->ParameterCount = cpu_to_le16(params); | |
5367 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5368 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5369 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5370 | pSMB->SetupCount = 1; |
5371 | pSMB->Reserved3 = 0; | |
5372 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5373 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5374 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5375 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5376 | ||
5377 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5378 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5379 | if (rc) { | |
f96637be | 5380 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5381 | } else { /* decode response */ |
5382 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5383 | ||
820a803f | 5384 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5385 | rc = -EIO; /* bad smb */ |
5386 | } else { | |
5387 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5388 | response_data = | |
5389 | (FILE_SYSTEM_POSIX_INFO | |
5390 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5391 | data_offset); | |
5392 | FSData->f_bsize = | |
5393 | le32_to_cpu(response_data->BlockSize); | |
5394 | FSData->f_blocks = | |
5395 | le64_to_cpu(response_data->TotalBlocks); | |
5396 | FSData->f_bfree = | |
5397 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5398 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5399 | FSData->f_bavail = FSData->f_bfree; |
5400 | } else { | |
5401 | FSData->f_bavail = | |
50c2f753 | 5402 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5403 | } |
790fe579 | 5404 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5405 | FSData->f_files = |
50c2f753 | 5406 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5407 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5408 | FSData->f_ffree = |
50c2f753 | 5409 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5410 | } |
5411 | } | |
5412 | cifs_buf_release(pSMB); | |
5413 | ||
5414 | if (rc == -EAGAIN) | |
5415 | goto QFSPosixRetry; | |
5416 | ||
5417 | return rc; | |
5418 | } | |
5419 | ||
5420 | ||
d1433418 PS |
5421 | /* |
5422 | * We can not use write of zero bytes trick to set file size due to need for | |
5423 | * large file support. Also note that this SetPathInfo is preferred to | |
5424 | * SetFileInfo based method in next routine which is only needed to work around | |
5425 | * a sharing violation bugin Samba which this routine can run into. | |
5426 | */ | |
1da177e4 | 5427 | int |
6d5786a3 | 5428 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5429 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5430 | bool set_allocation) | |
1da177e4 LT |
5431 | { |
5432 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5433 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5434 | struct file_end_of_file_info *parm_data; | |
5435 | int name_len; | |
5436 | int rc = 0; | |
5437 | int bytes_returned = 0; | |
d1433418 PS |
5438 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
5439 | ||
1da177e4 LT |
5440 | __u16 params, byte_count, data_count, param_offset, offset; |
5441 | ||
f96637be | 5442 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5443 | SetEOFRetry: |
5444 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5445 | (void **) &pSMBr); | |
5446 | if (rc) | |
5447 | return rc; | |
5448 | ||
5449 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5450 | name_len = | |
d1433418 PS |
5451 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5452 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5453 | name_len++; /* trailing null */ |
5454 | name_len *= 2; | |
3e87d803 | 5455 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5456 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5457 | name_len++; /* trailing null */ |
d1433418 | 5458 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5459 | } |
5460 | params = 6 + name_len; | |
26f57364 | 5461 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5462 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5463 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5464 | pSMB->MaxSetupCount = 0; |
5465 | pSMB->Reserved = 0; | |
5466 | pSMB->Flags = 0; | |
5467 | pSMB->Timeout = 0; | |
5468 | pSMB->Reserved2 = 0; | |
5469 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5470 | InformationLevel) - 4; |
1da177e4 | 5471 | offset = param_offset + params; |
d1433418 | 5472 | if (set_allocation) { |
50c2f753 SF |
5473 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5474 | pSMB->InformationLevel = | |
5475 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5476 | else | |
5477 | pSMB->InformationLevel = | |
5478 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5479 | } else /* Set File Size */ { | |
1da177e4 LT |
5480 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5481 | pSMB->InformationLevel = | |
50c2f753 | 5482 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5483 | else |
5484 | pSMB->InformationLevel = | |
50c2f753 | 5485 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5486 | } |
5487 | ||
5488 | parm_data = | |
5489 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5490 | offset); | |
5491 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5492 | pSMB->DataOffset = cpu_to_le16(offset); | |
5493 | pSMB->SetupCount = 1; | |
5494 | pSMB->Reserved3 = 0; | |
5495 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5496 | byte_count = 3 /* pad */ + params + data_count; | |
5497 | pSMB->DataCount = cpu_to_le16(data_count); | |
5498 | pSMB->TotalDataCount = pSMB->DataCount; | |
5499 | pSMB->ParameterCount = cpu_to_le16(params); | |
5500 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5501 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5502 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5503 | parm_data->FileSize = cpu_to_le64(size); |
5504 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5505 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5506 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5507 | if (rc) |
f96637be | 5508 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5509 | |
5510 | cifs_buf_release(pSMB); | |
5511 | ||
5512 | if (rc == -EAGAIN) | |
5513 | goto SetEOFRetry; | |
5514 | ||
5515 | return rc; | |
5516 | } | |
5517 | ||
5518 | int | |
d1433418 PS |
5519 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5520 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5521 | { |
5522 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5523 | struct file_end_of_file_info *parm_data; |
5524 | int rc = 0; | |
1da177e4 LT |
5525 | __u16 params, param_offset, offset, byte_count, count; |
5526 | ||
f96637be JP |
5527 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5528 | (long long)size); | |
cd63499c SF |
5529 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5530 | ||
1da177e4 LT |
5531 | if (rc) |
5532 | return rc; | |
5533 | ||
d1433418 PS |
5534 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5535 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5536 | |
1da177e4 LT |
5537 | params = 6; |
5538 | pSMB->MaxSetupCount = 0; | |
5539 | pSMB->Reserved = 0; | |
5540 | pSMB->Flags = 0; | |
5541 | pSMB->Timeout = 0; | |
5542 | pSMB->Reserved2 = 0; | |
5543 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5544 | offset = param_offset + params; | |
5545 | ||
1da177e4 LT |
5546 | count = sizeof(struct file_end_of_file_info); |
5547 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5548 | /* BB find exact max SMB PDU from sess structure BB */ |
5549 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5550 | pSMB->SetupCount = 1; |
5551 | pSMB->Reserved3 = 0; | |
5552 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5553 | byte_count = 3 /* pad */ + params + count; | |
5554 | pSMB->DataCount = cpu_to_le16(count); | |
5555 | pSMB->ParameterCount = cpu_to_le16(params); | |
5556 | pSMB->TotalDataCount = pSMB->DataCount; | |
5557 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5558 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5559 | parm_data = | |
50c2f753 SF |
5560 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5561 | + offset); | |
1da177e4 LT |
5562 | pSMB->DataOffset = cpu_to_le16(offset); |
5563 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5564 | pSMB->Fid = cfile->fid.netfid; |
5565 | if (set_allocation) { | |
1da177e4 LT |
5566 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5567 | pSMB->InformationLevel = | |
5568 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5569 | else | |
5570 | pSMB->InformationLevel = | |
5571 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5572 | } else /* Set File Size */ { |
1da177e4 LT |
5573 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5574 | pSMB->InformationLevel = | |
50c2f753 | 5575 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5576 | else |
5577 | pSMB->InformationLevel = | |
50c2f753 | 5578 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5579 | } |
5580 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5581 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5582 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5583 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5584 | if (rc) { |
f96637be JP |
5585 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5586 | rc); | |
1da177e4 LT |
5587 | } |
5588 | ||
50c2f753 | 5589 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5590 | since file handle passed in no longer valid */ |
5591 | ||
5592 | return rc; | |
5593 | } | |
5594 | ||
50c2f753 | 5595 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5596 | an open handle, rather than by pathname - this is awkward due to |
5597 | potential access conflicts on the open, but it is unavoidable for these | |
5598 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5599 | time and resort to the original setpathinfo level which takes the ancient | |
5600 | DOS time format with 2 second granularity */ | |
5601 | int | |
6d5786a3 | 5602 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5603 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5604 | { |
5605 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5606 | char *data_offset; |
5607 | int rc = 0; | |
1da177e4 LT |
5608 | __u16 params, param_offset, offset, byte_count, count; |
5609 | ||
f96637be | 5610 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5611 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5612 | ||
1da177e4 LT |
5613 | if (rc) |
5614 | return rc; | |
5615 | ||
2dd2dfa0 JL |
5616 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5617 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5618 | |
1da177e4 LT |
5619 | params = 6; |
5620 | pSMB->MaxSetupCount = 0; | |
5621 | pSMB->Reserved = 0; | |
5622 | pSMB->Flags = 0; | |
5623 | pSMB->Timeout = 0; | |
5624 | pSMB->Reserved2 = 0; | |
5625 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5626 | offset = param_offset + params; | |
5627 | ||
b2a3ad9c JL |
5628 | data_offset = (char *)pSMB + |
5629 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5630 | |
26f57364 | 5631 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5632 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5633 | /* BB find max SMB PDU from sess */ |
5634 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5635 | pSMB->SetupCount = 1; |
5636 | pSMB->Reserved3 = 0; | |
5637 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5638 | byte_count = 3 /* pad */ + params + count; | |
5639 | pSMB->DataCount = cpu_to_le16(count); | |
5640 | pSMB->ParameterCount = cpu_to_le16(params); | |
5641 | pSMB->TotalDataCount = pSMB->DataCount; | |
5642 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5643 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5644 | pSMB->DataOffset = cpu_to_le16(offset); | |
5645 | pSMB->Fid = fid; | |
5646 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5647 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5648 | else | |
5649 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5650 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5651 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5652 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5653 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5654 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5655 | if (rc) |
f96637be JP |
5656 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5657 | rc); | |
1da177e4 | 5658 | |
50c2f753 | 5659 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5660 | since file handle passed in no longer valid */ |
5661 | ||
5662 | return rc; | |
5663 | } | |
5664 | ||
6d22f098 | 5665 | int |
6d5786a3 | 5666 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5667 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5668 | { | |
5669 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5670 | char *data_offset; | |
5671 | int rc = 0; | |
5672 | __u16 params, param_offset, offset, byte_count, count; | |
5673 | ||
f96637be | 5674 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5675 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5676 | ||
5677 | if (rc) | |
5678 | return rc; | |
5679 | ||
5680 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5681 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5682 | ||
5683 | params = 6; | |
5684 | pSMB->MaxSetupCount = 0; | |
5685 | pSMB->Reserved = 0; | |
5686 | pSMB->Flags = 0; | |
5687 | pSMB->Timeout = 0; | |
5688 | pSMB->Reserved2 = 0; | |
5689 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5690 | offset = param_offset + params; | |
5691 | ||
5692 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5693 | ||
5694 | count = 1; | |
5695 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5696 | /* BB find max SMB PDU from sess */ | |
5697 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5698 | pSMB->SetupCount = 1; | |
5699 | pSMB->Reserved3 = 0; | |
5700 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5701 | byte_count = 3 /* pad */ + params + count; | |
5702 | pSMB->DataCount = cpu_to_le16(count); | |
5703 | pSMB->ParameterCount = cpu_to_le16(params); | |
5704 | pSMB->TotalDataCount = pSMB->DataCount; | |
5705 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5706 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5707 | pSMB->DataOffset = cpu_to_le16(offset); | |
5708 | pSMB->Fid = fid; | |
5709 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5710 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5711 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5712 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5713 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5714 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5715 | if (rc) |
f96637be | 5716 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5717 | |
5718 | return rc; | |
5719 | } | |
1da177e4 LT |
5720 | |
5721 | int | |
6d5786a3 | 5722 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5723 | const char *fileName, const FILE_BASIC_INFO *data, |
5724 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5725 | { |
5726 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5727 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5728 | int name_len; | |
5729 | int rc = 0; | |
5730 | int bytes_returned = 0; | |
5731 | char *data_offset; | |
5732 | __u16 params, param_offset, offset, byte_count, count; | |
5733 | ||
f96637be | 5734 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5735 | |
5736 | SetTimesRetry: | |
5737 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5738 | (void **) &pSMBr); | |
5739 | if (rc) | |
5740 | return rc; | |
5741 | ||
5742 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5743 | name_len = | |
acbbb76a SF |
5744 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5745 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5746 | name_len++; /* trailing null */ |
5747 | name_len *= 2; | |
50c2f753 | 5748 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5749 | name_len = strnlen(fileName, PATH_MAX); |
5750 | name_len++; /* trailing null */ | |
5751 | strncpy(pSMB->FileName, fileName, name_len); | |
5752 | } | |
5753 | ||
5754 | params = 6 + name_len; | |
26f57364 | 5755 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5756 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5757 | /* BB find max SMB PDU from sess structure BB */ |
5758 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5759 | pSMB->MaxSetupCount = 0; |
5760 | pSMB->Reserved = 0; | |
5761 | pSMB->Flags = 0; | |
5762 | pSMB->Timeout = 0; | |
5763 | pSMB->Reserved2 = 0; | |
5764 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5765 | InformationLevel) - 4; |
1da177e4 LT |
5766 | offset = param_offset + params; |
5767 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5768 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5769 | pSMB->DataOffset = cpu_to_le16(offset); | |
5770 | pSMB->SetupCount = 1; | |
5771 | pSMB->Reserved3 = 0; | |
5772 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5773 | byte_count = 3 /* pad */ + params + count; | |
5774 | ||
5775 | pSMB->DataCount = cpu_to_le16(count); | |
5776 | pSMB->ParameterCount = cpu_to_le16(params); | |
5777 | pSMB->TotalDataCount = pSMB->DataCount; | |
5778 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5779 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5780 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5781 | else | |
5782 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5783 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5784 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5785 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5786 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5787 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5788 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5789 | if (rc) |
f96637be | 5790 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5791 | |
5792 | cifs_buf_release(pSMB); | |
5793 | ||
5794 | if (rc == -EAGAIN) | |
5795 | goto SetTimesRetry; | |
5796 | ||
5797 | return rc; | |
5798 | } | |
5799 | ||
5800 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5801 | /* Can be used to set attributes */ | |
5802 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5803 | handling it anyway and NT4 was what we thought it would be needed for | |
5804 | Do not delete it until we prove whether needed for Win9x though */ | |
5805 | int | |
6d5786a3 | 5806 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5807 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5808 | { | |
5809 | SETATTR_REQ *pSMB = NULL; | |
5810 | SETATTR_RSP *pSMBr = NULL; | |
5811 | int rc = 0; | |
5812 | int bytes_returned; | |
5813 | int name_len; | |
5814 | ||
f96637be | 5815 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5816 | |
5817 | SetAttrLgcyRetry: | |
5818 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5819 | (void **) &pSMBr); | |
5820 | if (rc) | |
5821 | return rc; | |
5822 | ||
5823 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5824 | name_len = | |
acbbb76a SF |
5825 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5826 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5827 | name_len++; /* trailing null */ |
5828 | name_len *= 2; | |
50c2f753 | 5829 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5830 | name_len = strnlen(fileName, PATH_MAX); |
5831 | name_len++; /* trailing null */ | |
5832 | strncpy(pSMB->fileName, fileName, name_len); | |
5833 | } | |
5834 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5835 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5836 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5837 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5838 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5839 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5840 | if (rc) |
f96637be | 5841 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5842 | |
5843 | cifs_buf_release(pSMB); | |
5844 | ||
5845 | if (rc == -EAGAIN) | |
5846 | goto SetAttrLgcyRetry; | |
5847 | ||
5848 | return rc; | |
5849 | } | |
5850 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5851 | ||
654cf14a JL |
5852 | static void |
5853 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5854 | const struct cifs_unix_set_info_args *args) | |
5855 | { | |
49418b2c | 5856 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5857 | u64 mode = args->mode; |
5858 | ||
49418b2c EB |
5859 | if (uid_valid(args->uid)) |
5860 | uid = from_kuid(&init_user_ns, args->uid); | |
5861 | if (gid_valid(args->gid)) | |
5862 | gid = from_kgid(&init_user_ns, args->gid); | |
5863 | ||
654cf14a JL |
5864 | /* |
5865 | * Samba server ignores set of file size to zero due to bugs in some | |
5866 | * older clients, but we should be precise - we use SetFileSize to | |
5867 | * set file size and do not want to truncate file size to zero | |
25985edc | 5868 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5869 | * zero instead of -1 here |
5870 | */ | |
5871 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5872 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5873 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5874 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5875 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5876 | data_offset->Uid = cpu_to_le64(uid); |
5877 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5878 | /* better to leave device as zero when it is */ |
5879 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5880 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5881 | data_offset->Permissions = cpu_to_le64(mode); | |
5882 | ||
5883 | if (S_ISREG(mode)) | |
5884 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5885 | else if (S_ISDIR(mode)) | |
5886 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5887 | else if (S_ISLNK(mode)) | |
5888 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5889 | else if (S_ISCHR(mode)) | |
5890 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5891 | else if (S_ISBLK(mode)) | |
5892 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5893 | else if (S_ISFIFO(mode)) | |
5894 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5895 | else if (S_ISSOCK(mode)) | |
5896 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5897 | } | |
5898 | ||
3bbeeb3c | 5899 | int |
6d5786a3 | 5900 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5901 | const struct cifs_unix_set_info_args *args, |
5902 | u16 fid, u32 pid_of_opener) | |
5903 | { | |
5904 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5905 | char *data_offset; |
3bbeeb3c JL |
5906 | int rc = 0; |
5907 | u16 params, param_offset, offset, byte_count, count; | |
5908 | ||
f96637be | 5909 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5910 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5911 | ||
5912 | if (rc) | |
5913 | return rc; | |
5914 | ||
5915 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5916 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5917 | ||
5918 | params = 6; | |
5919 | pSMB->MaxSetupCount = 0; | |
5920 | pSMB->Reserved = 0; | |
5921 | pSMB->Flags = 0; | |
5922 | pSMB->Timeout = 0; | |
5923 | pSMB->Reserved2 = 0; | |
5924 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5925 | offset = param_offset + params; | |
5926 | ||
b2a3ad9c JL |
5927 | data_offset = (char *)pSMB + |
5928 | offsetof(struct smb_hdr, Protocol) + offset; | |
5929 | ||
3bbeeb3c JL |
5930 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5931 | ||
5932 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5933 | /* BB find max SMB PDU from sess */ | |
5934 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5935 | pSMB->SetupCount = 1; | |
5936 | pSMB->Reserved3 = 0; | |
5937 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5938 | byte_count = 3 /* pad */ + params + count; | |
5939 | pSMB->DataCount = cpu_to_le16(count); | |
5940 | pSMB->ParameterCount = cpu_to_le16(params); | |
5941 | pSMB->TotalDataCount = pSMB->DataCount; | |
5942 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5943 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5944 | pSMB->DataOffset = cpu_to_le16(offset); | |
5945 | pSMB->Fid = fid; | |
5946 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5947 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5948 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5949 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5950 | ||
b2a3ad9c | 5951 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5952 | |
792af7b0 | 5953 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5954 | if (rc) |
f96637be JP |
5955 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5956 | rc); | |
3bbeeb3c JL |
5957 | |
5958 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5959 | since file handle passed in no longer valid */ | |
5960 | ||
5961 | return rc; | |
5962 | } | |
5963 | ||
1da177e4 | 5964 | int |
6d5786a3 | 5965 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5966 | const char *file_name, |
01ea95e3 JL |
5967 | const struct cifs_unix_set_info_args *args, |
5968 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5969 | { |
5970 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5971 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5972 | int name_len; | |
5973 | int rc = 0; | |
5974 | int bytes_returned = 0; | |
5975 | FILE_UNIX_BASIC_INFO *data_offset; | |
5976 | __u16 params, param_offset, offset, count, byte_count; | |
5977 | ||
f96637be | 5978 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5979 | setPermsRetry: |
5980 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5981 | (void **) &pSMBr); | |
5982 | if (rc) | |
5983 | return rc; | |
5984 | ||
5985 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5986 | name_len = | |
ff691e96 | 5987 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5988 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5989 | name_len++; /* trailing null */ |
5990 | name_len *= 2; | |
3e87d803 | 5991 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 5992 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5993 | name_len++; /* trailing null */ |
ff691e96 | 5994 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5995 | } |
5996 | ||
5997 | params = 6 + name_len; | |
26f57364 | 5998 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5999 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6000 | /* BB find max SMB PDU from sess structure BB */ |
6001 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6002 | pSMB->MaxSetupCount = 0; |
6003 | pSMB->Reserved = 0; | |
6004 | pSMB->Flags = 0; | |
6005 | pSMB->Timeout = 0; | |
6006 | pSMB->Reserved2 = 0; | |
6007 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6008 | InformationLevel) - 4; |
1da177e4 LT |
6009 | offset = param_offset + params; |
6010 | data_offset = | |
6011 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6012 | offset); | |
6013 | memset(data_offset, 0, count); | |
6014 | pSMB->DataOffset = cpu_to_le16(offset); | |
6015 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6016 | pSMB->SetupCount = 1; | |
6017 | pSMB->Reserved3 = 0; | |
6018 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6019 | byte_count = 3 /* pad */ + params + count; | |
6020 | pSMB->ParameterCount = cpu_to_le16(params); | |
6021 | pSMB->DataCount = cpu_to_le16(count); | |
6022 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6023 | pSMB->TotalDataCount = pSMB->DataCount; | |
6024 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6025 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6026 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6027 | |
654cf14a | 6028 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6029 | |
6030 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6031 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6032 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6033 | if (rc) |
f96637be | 6034 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6035 | |
0d817bc0 | 6036 | cifs_buf_release(pSMB); |
1da177e4 LT |
6037 | if (rc == -EAGAIN) |
6038 | goto setPermsRetry; | |
6039 | return rc; | |
6040 | } | |
6041 | ||
1da177e4 | 6042 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6043 | /* |
6044 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6045 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6046 | * it looks for that attribute name and stuffs that value into the EAData | |
6047 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6048 | * buffer. In both cases, the return value is either the length of the | |
6049 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6050 | * the data isn't copied to it, but the length is returned. | |
6051 | */ | |
1da177e4 | 6052 | ssize_t |
6d5786a3 | 6053 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6054 | const unsigned char *searchName, const unsigned char *ea_name, |
6055 | char *EAData, size_t buf_size, | |
6056 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6057 | { |
6058 | /* BB assumes one setup word */ | |
6059 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6060 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6061 | int rc = 0; | |
6062 | int bytes_returned; | |
6e462b9f | 6063 | int list_len; |
f0d3868b | 6064 | struct fealist *ea_response_data; |
50c2f753 SF |
6065 | struct fea *temp_fea; |
6066 | char *temp_ptr; | |
0cd126b5 | 6067 | char *end_of_smb; |
f0d3868b | 6068 | __u16 params, byte_count, data_offset; |
5980fc96 | 6069 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6070 | |
f96637be | 6071 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6072 | QAllEAsRetry: |
6073 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6074 | (void **) &pSMBr); | |
6075 | if (rc) | |
6076 | return rc; | |
6077 | ||
6078 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6079 | list_len = |
acbbb76a SF |
6080 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6081 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6082 | list_len++; /* trailing null */ |
6083 | list_len *= 2; | |
1da177e4 | 6084 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6085 | list_len = strnlen(searchName, PATH_MAX); |
6086 | list_len++; /* trailing null */ | |
6087 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6088 | } |
6089 | ||
6e462b9f | 6090 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6091 | pSMB->TotalDataCount = 0; |
6092 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6093 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6094 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6095 | pSMB->MaxSetupCount = 0; |
6096 | pSMB->Reserved = 0; | |
6097 | pSMB->Flags = 0; | |
6098 | pSMB->Timeout = 0; | |
6099 | pSMB->Reserved2 = 0; | |
6100 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6101 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6102 | pSMB->DataCount = 0; |
6103 | pSMB->DataOffset = 0; | |
6104 | pSMB->SetupCount = 1; | |
6105 | pSMB->Reserved3 = 0; | |
6106 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6107 | byte_count = params + 1 /* pad */ ; | |
6108 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6109 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6110 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6111 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6112 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6113 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6114 | ||
6115 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6116 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6117 | if (rc) { | |
f96637be | 6118 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6119 | goto QAllEAsOut; |
6120 | } | |
1da177e4 | 6121 | |
f0d3868b JL |
6122 | |
6123 | /* BB also check enough total bytes returned */ | |
6124 | /* BB we need to improve the validity checking | |
6125 | of these trans2 responses */ | |
6126 | ||
6127 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6128 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6129 | rc = -EIO; /* bad smb */ |
6130 | goto QAllEAsOut; | |
6131 | } | |
6132 | ||
6133 | /* check that length of list is not more than bcc */ | |
6134 | /* check that each entry does not go beyond length | |
6135 | of list */ | |
6136 | /* check that each element of each entry does not | |
6137 | go beyond end of list */ | |
6138 | /* validate_trans2_offsets() */ | |
6139 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6140 | ||
6141 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6142 | ea_response_data = (struct fealist *) | |
6143 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6144 | ||
6e462b9f | 6145 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6146 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6147 | if (list_len <= 8) { |
f96637be | 6148 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
f0d3868b JL |
6149 | goto QAllEAsOut; |
6150 | } | |
6151 | ||
0cd126b5 | 6152 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6153 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6154 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6155 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6156 | rc = -EIO; |
6157 | goto QAllEAsOut; | |
6158 | } | |
6159 | ||
f0d3868b | 6160 | /* account for ea list len */ |
6e462b9f | 6161 | list_len -= 4; |
f0d3868b JL |
6162 | temp_fea = ea_response_data->list; |
6163 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6164 | while (list_len > 0) { |
122ca007 | 6165 | unsigned int name_len; |
f0d3868b | 6166 | __u16 value_len; |
0cd126b5 | 6167 | |
6e462b9f | 6168 | list_len -= 4; |
f0d3868b | 6169 | temp_ptr += 4; |
0cd126b5 JL |
6170 | /* make sure we can read name_len and value_len */ |
6171 | if (list_len < 0) { | |
f96637be | 6172 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6173 | rc = -EIO; |
6174 | goto QAllEAsOut; | |
6175 | } | |
6176 | ||
6177 | name_len = temp_fea->name_len; | |
6178 | value_len = le16_to_cpu(temp_fea->value_len); | |
6179 | list_len -= name_len + 1 + value_len; | |
6180 | if (list_len < 0) { | |
f96637be | 6181 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6182 | rc = -EIO; |
6183 | goto QAllEAsOut; | |
6184 | } | |
6185 | ||
31c0519f | 6186 | if (ea_name) { |
91d065c4 | 6187 | if (ea_name_len == name_len && |
ac423446 | 6188 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6189 | temp_ptr += name_len + 1; |
6190 | rc = value_len; | |
6191 | if (buf_size == 0) | |
6192 | goto QAllEAsOut; | |
6193 | if ((size_t)value_len > buf_size) { | |
6194 | rc = -ERANGE; | |
6195 | goto QAllEAsOut; | |
6196 | } | |
6197 | memcpy(EAData, temp_ptr, value_len); | |
6198 | goto QAllEAsOut; | |
6199 | } | |
f0d3868b | 6200 | } else { |
31c0519f JL |
6201 | /* account for prefix user. and trailing null */ |
6202 | rc += (5 + 1 + name_len); | |
6203 | if (rc < (int) buf_size) { | |
6204 | memcpy(EAData, "user.", 5); | |
6205 | EAData += 5; | |
6206 | memcpy(EAData, temp_ptr, name_len); | |
6207 | EAData += name_len; | |
6208 | /* null terminate name */ | |
6209 | *EAData = 0; | |
6210 | ++EAData; | |
6211 | } else if (buf_size == 0) { | |
6212 | /* skip copy - calc size only */ | |
6213 | } else { | |
6214 | /* stop before overrun buffer */ | |
6215 | rc = -ERANGE; | |
6216 | break; | |
6217 | } | |
1da177e4 | 6218 | } |
0cd126b5 | 6219 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6220 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6221 | } |
f0d3868b | 6222 | |
31c0519f JL |
6223 | /* didn't find the named attribute */ |
6224 | if (ea_name) | |
6225 | rc = -ENODATA; | |
6226 | ||
f0d3868b | 6227 | QAllEAsOut: |
0d817bc0 | 6228 | cifs_buf_release(pSMB); |
1da177e4 LT |
6229 | if (rc == -EAGAIN) |
6230 | goto QAllEAsRetry; | |
6231 | ||
6232 | return (ssize_t)rc; | |
6233 | } | |
6234 | ||
1da177e4 | 6235 | int |
6d5786a3 PS |
6236 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6237 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6238 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6239 | int remap) | |
1da177e4 LT |
6240 | { |
6241 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6242 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6243 | struct fealist *parm_data; | |
6244 | int name_len; | |
6245 | int rc = 0; | |
6246 | int bytes_returned = 0; | |
6247 | __u16 params, param_offset, byte_count, offset, count; | |
6248 | ||
f96637be | 6249 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6250 | SetEARetry: |
6251 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6252 | (void **) &pSMBr); | |
6253 | if (rc) | |
6254 | return rc; | |
6255 | ||
6256 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6257 | name_len = | |
acbbb76a SF |
6258 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6259 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6260 | name_len++; /* trailing null */ |
6261 | name_len *= 2; | |
50c2f753 | 6262 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6263 | name_len = strnlen(fileName, PATH_MAX); |
6264 | name_len++; /* trailing null */ | |
6265 | strncpy(pSMB->FileName, fileName, name_len); | |
6266 | } | |
6267 | ||
6268 | params = 6 + name_len; | |
6269 | ||
6270 | /* done calculating parms using name_len of file name, | |
6271 | now use name_len to calculate length of ea name | |
6272 | we are going to create in the inode xattrs */ | |
790fe579 | 6273 | if (ea_name == NULL) |
1da177e4 LT |
6274 | name_len = 0; |
6275 | else | |
50c2f753 | 6276 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6277 | |
dae5dbdb | 6278 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6279 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6280 | /* BB find max SMB PDU from sess */ |
6281 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6282 | pSMB->MaxSetupCount = 0; |
6283 | pSMB->Reserved = 0; | |
6284 | pSMB->Flags = 0; | |
6285 | pSMB->Timeout = 0; | |
6286 | pSMB->Reserved2 = 0; | |
6287 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6288 | InformationLevel) - 4; |
1da177e4 LT |
6289 | offset = param_offset + params; |
6290 | pSMB->InformationLevel = | |
6291 | cpu_to_le16(SMB_SET_FILE_EA); | |
6292 | ||
6293 | parm_data = | |
6294 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6295 | offset); | |
6296 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6297 | pSMB->DataOffset = cpu_to_le16(offset); | |
6298 | pSMB->SetupCount = 1; | |
6299 | pSMB->Reserved3 = 0; | |
6300 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6301 | byte_count = 3 /* pad */ + params + count; | |
6302 | pSMB->DataCount = cpu_to_le16(count); | |
6303 | parm_data->list_len = cpu_to_le32(count); | |
6304 | parm_data->list[0].EA_flags = 0; | |
6305 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6306 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6307 | /* EA names are always ASCII */ |
790fe579 | 6308 | if (ea_name) |
50c2f753 | 6309 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6310 | parm_data->list[0].name[name_len] = 0; |
6311 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6312 | /* caller ensures that ea_value_len is less than 64K but | |
6313 | we need to ensure that it fits within the smb */ | |
6314 | ||
50c2f753 SF |
6315 | /*BB add length check to see if it would fit in |
6316 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6317 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6318 | if (ea_value_len) | |
50c2f753 SF |
6319 | memcpy(parm_data->list[0].name+name_len+1, |
6320 | ea_value, ea_value_len); | |
1da177e4 LT |
6321 | |
6322 | pSMB->TotalDataCount = pSMB->DataCount; | |
6323 | pSMB->ParameterCount = cpu_to_le16(params); | |
6324 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6325 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6326 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6327 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6328 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6329 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6330 | if (rc) |
f96637be | 6331 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6332 | |
6333 | cifs_buf_release(pSMB); | |
6334 | ||
6335 | if (rc == -EAGAIN) | |
6336 | goto SetEARetry; | |
6337 | ||
6338 | return rc; | |
6339 | } | |
1da177e4 | 6340 | #endif |
0eff0e26 SF |
6341 | |
6342 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6343 | /* | |
6344 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6345 | * to allow network clients (such as Windows) to display updated | |
6346 | * lists of files in directory listings automatically when | |
6347 | * files are added by one user when another user has the | |
6348 | * same directory open on their desktop. The Linux cifs kernel | |
6349 | * client hooked into the kernel side of this interface for | |
6350 | * the same reason, but ironically when the VFS moved from | |
6351 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6352 | * network file system clients (the most obvious use case | |
6353 | * for notify interfaces is when multiple users can update | |
6354 | * the contents of the same directory - exactly what network | |
6355 | * file systems can do) although the server (Samba) could | |
6356 | * still use it. For the short term we leave the worker | |
6357 | * function ifdeffed out (below) until inotify is fixed | |
6358 | * in the VFS to make it easier to plug in network file | |
6359 | * system clients. If inotify turns out to be permanently | |
6360 | * incompatible for network fs clients, we could instead simply | |
6361 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6362 | */ | |
6d5786a3 | 6363 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6364 | const int notify_subdirs, const __u16 netfid, |
6365 | __u32 filter, struct file *pfile, int multishot, | |
6366 | const struct nls_table *nls_codepage) | |
6367 | { | |
6368 | int rc = 0; | |
6369 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6370 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6371 | struct dir_notify_req *dnotify_req; | |
6372 | int bytes_returned; | |
6373 | ||
f96637be | 6374 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6375 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6376 | (void **) &pSMBr); | |
6377 | if (rc) | |
6378 | return rc; | |
6379 | ||
6380 | pSMB->TotalParameterCount = 0 ; | |
6381 | pSMB->TotalDataCount = 0; | |
6382 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6383 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6384 | pSMB->MaxSetupCount = 4; |
6385 | pSMB->Reserved = 0; | |
6386 | pSMB->ParameterOffset = 0; | |
6387 | pSMB->DataCount = 0; | |
6388 | pSMB->DataOffset = 0; | |
6389 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6390 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6391 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6392 | if (notify_subdirs) | |
6393 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6394 | pSMB->Reserved2 = 0; | |
6395 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6396 | pSMB->Fid = netfid; /* file handle always le */ | |
6397 | pSMB->ByteCount = 0; | |
6398 | ||
6399 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6400 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6401 | CIFS_ASYNC_OP); | |
6402 | if (rc) { | |
f96637be | 6403 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6404 | } else { |
6405 | /* Add file to outstanding requests */ | |
6406 | /* BB change to kmem cache alloc */ | |
6407 | dnotify_req = kmalloc( | |
6408 | sizeof(struct dir_notify_req), | |
6409 | GFP_KERNEL); | |
6410 | if (dnotify_req) { | |
6411 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6412 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6413 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6414 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6415 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6416 | dnotify_req->netfid = netfid; | |
6417 | dnotify_req->pfile = pfile; | |
6418 | dnotify_req->filter = filter; | |
6419 | dnotify_req->multishot = multishot; | |
6420 | spin_lock(&GlobalMid_Lock); | |
6421 | list_add_tail(&dnotify_req->lhead, | |
6422 | &GlobalDnotifyReqList); | |
6423 | spin_unlock(&GlobalMid_Lock); | |
6424 | } else | |
6425 | rc = -ENOMEM; | |
6426 | } | |
6427 | cifs_buf_release(pSMB); | |
6428 | return rc; | |
6429 | } | |
6430 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |