Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
aa24d1e9 PS |
89 | /* |
90 | * Mark as invalid, all open files on tree connections since they | |
91 | * were closed when session to server was lost. | |
92 | */ | |
93 | void | |
94 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 | 99 | |
aa24d1e9 | 100 | /* list all files open on tree connection and mark them invalid */ |
4477288a | 101 | spin_lock(&cifs_file_list_lock); |
aa24d1e9 | 102 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 103 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 104 | open_file->invalidHandle = true; |
3bc303c2 | 105 | open_file->oplock_break_cancelled = true; |
1da177e4 | 106 | } |
4477288a | 107 | spin_unlock(&cifs_file_list_lock); |
aa24d1e9 PS |
108 | /* |
109 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
110 | * to this tcon. | |
111 | */ | |
1da177e4 LT |
112 | } |
113 | ||
9162ab20 JL |
114 | /* reconnect the socket, tcon, and smb session if needed */ |
115 | static int | |
96daf2b0 | 116 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 117 | { |
c4a5534a | 118 | int rc; |
96daf2b0 | 119 | struct cifs_ses *ses; |
9162ab20 JL |
120 | struct TCP_Server_Info *server; |
121 | struct nls_table *nls_codepage; | |
122 | ||
123 | /* | |
124 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
125 | * tcp and smb session status done differently for those three - in the | |
126 | * calling routine | |
127 | */ | |
128 | if (!tcon) | |
129 | return 0; | |
130 | ||
131 | ses = tcon->ses; | |
132 | server = ses->server; | |
133 | ||
134 | /* | |
135 | * only tree disconnect, open, and write, (and ulogoff which does not | |
136 | * have tcon) are allowed as we start force umount | |
137 | */ | |
138 | if (tcon->tidStatus == CifsExiting) { | |
139 | if (smb_command != SMB_COM_WRITE_ANDX && | |
140 | smb_command != SMB_COM_OPEN_ANDX && | |
141 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
142 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
143 | smb_command); | |
9162ab20 JL |
144 | return -ENODEV; |
145 | } | |
146 | } | |
147 | ||
9162ab20 JL |
148 | /* |
149 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
150 | * greater than cifs socket timeout which is 7 seconds | |
151 | */ | |
152 | while (server->tcpStatus == CifsNeedReconnect) { | |
153 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 154 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 155 | |
fd88ce93 | 156 | /* are we still trying to reconnect? */ |
9162ab20 JL |
157 | if (server->tcpStatus != CifsNeedReconnect) |
158 | break; | |
159 | ||
160 | /* | |
161 | * on "soft" mounts we wait once. Hard mounts keep | |
162 | * retrying until process is killed or server comes | |
163 | * back on-line | |
164 | */ | |
d402539b | 165 | if (!tcon->retry) { |
f96637be | 166 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
167 | return -EHOSTDOWN; |
168 | } | |
169 | } | |
170 | ||
171 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
172 | return 0; | |
173 | ||
174 | nls_codepage = load_nls_default(); | |
175 | ||
176 | /* | |
177 | * need to prevent multiple threads trying to simultaneously | |
178 | * reconnect the same SMB session | |
179 | */ | |
d7b619cf | 180 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
181 | rc = cifs_negotiate_protocol(0, ses); |
182 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
183 | rc = cifs_setup_session(0, ses, nls_codepage); |
184 | ||
185 | /* do we need to reconnect tcon? */ | |
186 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
188 | goto out; |
189 | } | |
190 | ||
aa24d1e9 | 191 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 192 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 193 | mutex_unlock(&ses->session_mutex); |
f96637be | 194 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 JL |
195 | |
196 | if (rc) | |
197 | goto out; | |
198 | ||
199 | /* | |
200 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
201 | * size shrinking | |
202 | */ | |
203 | atomic_inc(&tconInfoReconnectCount); | |
204 | ||
205 | /* tell server Unix caps we support */ | |
206 | if (ses->capabilities & CAP_UNIX) | |
207 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
208 | ||
209 | /* | |
210 | * Removed call to reopen open files here. It is safer (and faster) to | |
211 | * reopen files one at a time as needed in read and write. | |
212 | * | |
213 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
214 | */ | |
215 | ||
216 | out: | |
217 | /* | |
218 | * Check if handle based operation so we know whether we can continue | |
219 | * or not without returning to caller to reset file handle | |
220 | */ | |
221 | switch (smb_command) { | |
222 | case SMB_COM_READ_ANDX: | |
223 | case SMB_COM_WRITE_ANDX: | |
224 | case SMB_COM_CLOSE: | |
225 | case SMB_COM_FIND_CLOSE2: | |
226 | case SMB_COM_LOCKING_ANDX: | |
227 | rc = -EAGAIN; | |
228 | } | |
229 | ||
230 | unload_nls(nls_codepage); | |
231 | return rc; | |
232 | } | |
233 | ||
ad7a2926 SF |
234 | /* Allocate and return pointer to an SMB request buffer, and set basic |
235 | SMB information in the SMB header. If the return code is zero, this | |
236 | function must have filled in request_buf pointer */ | |
1da177e4 | 237 | static int |
96daf2b0 | 238 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 239 | void **request_buf) |
1da177e4 | 240 | { |
f569599a | 241 | int rc; |
1da177e4 | 242 | |
9162ab20 | 243 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 244 | if (rc) |
1da177e4 LT |
245 | return rc; |
246 | ||
247 | *request_buf = cifs_small_buf_get(); | |
248 | if (*request_buf == NULL) { | |
249 | /* BB should we add a retry in here if not a writepage? */ | |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
63135e08 | 253 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 254 | tcon, wct); |
1da177e4 | 255 | |
790fe579 SF |
256 | if (tcon != NULL) |
257 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 258 | |
f569599a | 259 | return 0; |
5815449d SF |
260 | } |
261 | ||
12b3b8ff | 262 | int |
50c2f753 | 263 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 264 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
265 | { |
266 | int rc; | |
50c2f753 | 267 | struct smb_hdr *buffer; |
12b3b8ff | 268 | |
5815449d | 269 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 270 | if (rc) |
12b3b8ff SF |
271 | return rc; |
272 | ||
04fdabe1 | 273 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 274 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
275 | if (ses->capabilities & CAP_UNICODE) |
276 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 277 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
278 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
279 | ||
280 | /* uid, tid can stay at zero as set in header assemble */ | |
281 | ||
50c2f753 | 282 | /* BB add support for turning on the signing when |
12b3b8ff SF |
283 | this function is used after 1st of session setup requests */ |
284 | ||
285 | return rc; | |
286 | } | |
1da177e4 LT |
287 | |
288 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
289 | static int | |
96daf2b0 | 290 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 291 | void **request_buf, void **response_buf) |
1da177e4 | 292 | { |
1da177e4 LT |
293 | *request_buf = cifs_buf_get(); |
294 | if (*request_buf == NULL) { | |
295 | /* BB should we add a retry in here if not a writepage? */ | |
296 | return -ENOMEM; | |
297 | } | |
298 | /* Although the original thought was we needed the response buf for */ | |
299 | /* potential retries of smb operations it turns out we can determine */ | |
300 | /* from the mid flags when the request buffer can be resent without */ | |
301 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 302 | if (response_buf) |
50c2f753 | 303 | *response_buf = *request_buf; |
1da177e4 LT |
304 | |
305 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 306 | wct); |
1da177e4 | 307 | |
790fe579 SF |
308 | if (tcon != NULL) |
309 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 310 | |
f569599a JL |
311 | return 0; |
312 | } | |
313 | ||
314 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
315 | static int | |
96daf2b0 | 316 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
317 | void **request_buf, void **response_buf) |
318 | { | |
319 | int rc; | |
320 | ||
321 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
322 | if (rc) | |
323 | return rc; | |
324 | ||
325 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
326 | } | |
327 | ||
328 | static int | |
96daf2b0 | 329 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
330 | void **request_buf, void **response_buf) |
331 | { | |
332 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
333 | return -EHOSTDOWN; | |
334 | ||
335 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
336 | } |
337 | ||
50c2f753 | 338 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 339 | { |
12df83c9 JL |
340 | unsigned int total_size; |
341 | ||
342 | /* check for plausible wct */ | |
343 | if (pSMB->hdr.WordCount < 10) | |
344 | goto vt2_err; | |
1da177e4 | 345 | |
1da177e4 | 346 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
347 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
348 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
349 | goto vt2_err; | |
350 | ||
12df83c9 JL |
351 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
352 | if (total_size >= 512) | |
353 | goto vt2_err; | |
354 | ||
fd5707e1 JL |
355 | /* check that bcc is at least as big as parms + data, and that it is |
356 | * less than negotiated smb buffer | |
357 | */ | |
12df83c9 JL |
358 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
359 | if (total_size > get_bcc(&pSMB->hdr) || | |
360 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
361 | goto vt2_err; | |
362 | ||
363 | return 0; | |
364 | vt2_err: | |
50c2f753 | 365 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 366 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 367 | return -EINVAL; |
1da177e4 | 368 | } |
690c522f | 369 | |
31d9e2bd | 370 | static int |
3f618223 | 371 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
372 | { |
373 | int rc = 0; | |
374 | u16 count; | |
375 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 376 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
377 | |
378 | count = get_bcc(&pSMBr->hdr); | |
379 | if (count < SMB1_CLIENT_GUID_SIZE) | |
380 | return -EIO; | |
381 | ||
382 | spin_lock(&cifs_tcp_ses_lock); | |
383 | if (server->srv_count > 1) { | |
384 | spin_unlock(&cifs_tcp_ses_lock); | |
385 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
386 | cifs_dbg(FYI, "server UID changed\n"); | |
387 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
388 | } | |
389 | } else { | |
390 | spin_unlock(&cifs_tcp_ses_lock); | |
391 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
392 | } | |
393 | ||
394 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 395 | server->sec_ntlmssp = true; |
31d9e2bd JL |
396 | } else { |
397 | count -= SMB1_CLIENT_GUID_SIZE; | |
398 | rc = decode_negTokenInit( | |
399 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
400 | if (rc != 1) | |
401 | return -EINVAL; | |
31d9e2bd JL |
402 | } |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
9ddec561 | 407 | int |
38d77c50 | 408 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 409 | { |
50285882 JL |
410 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
411 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
412 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
413 | ||
414 | /* | |
415 | * Is signing required by mnt options? If not then check | |
416 | * global_secflags to see if it is there. | |
417 | */ | |
418 | if (!mnt_sign_required) | |
419 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
420 | CIFSSEC_MUST_SIGN); | |
421 | ||
422 | /* | |
423 | * If signing is required then it's automatically enabled too, | |
424 | * otherwise, check to see if the secflags allow it. | |
425 | */ | |
426 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
427 | (global_secflags & CIFSSEC_MAY_SIGN); | |
428 | ||
429 | /* If server requires signing, does client allow it? */ | |
430 | if (srv_sign_required) { | |
431 | if (!mnt_sign_enabled) { | |
432 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
433 | return -ENOTSUPP; | |
9ddec561 | 434 | } |
38d77c50 JL |
435 | server->sign = true; |
436 | } | |
437 | ||
438 | /* If client requires signing, does server allow it? */ | |
439 | if (mnt_sign_required) { | |
440 | if (!srv_sign_enabled) { | |
441 | cifs_dbg(VFS, "Server does not support signing!"); | |
442 | return -ENOTSUPP; | |
443 | } | |
444 | server->sign = true; | |
9ddec561 JL |
445 | } |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
2190eca1 JL |
450 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
451 | static int | |
3f618223 | 452 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
453 | { |
454 | __s16 tmp; | |
455 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
456 | ||
457 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
458 | return -EOPNOTSUPP; | |
459 | ||
2190eca1 JL |
460 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
461 | server->maxReq = min_t(unsigned int, | |
462 | le16_to_cpu(rsp->MaxMpxCount), | |
463 | cifs_max_pending); | |
464 | set_credits(server, server->maxReq); | |
465 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
2190eca1 JL |
466 | /* even though we do not use raw we might as well set this |
467 | accurately, in case we ever find a need for it */ | |
468 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
469 | server->max_rw = 0xFF00; | |
470 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
471 | } else { | |
472 | server->max_rw = 0;/* do not need to use raw anyway */ | |
473 | server->capabilities = CAP_MPX_MODE; | |
474 | } | |
475 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
476 | if (tmp == -1) { | |
477 | /* OS/2 often does not set timezone therefore | |
478 | * we must use server time to calc time zone. | |
479 | * Could deviate slightly from the right zone. | |
480 | * Smallest defined timezone difference is 15 minutes | |
481 | * (i.e. Nepal). Rounding up/down is done to match | |
482 | * this requirement. | |
483 | */ | |
484 | int val, seconds, remain, result; | |
485 | struct timespec ts, utc; | |
486 | utc = CURRENT_TIME; | |
487 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, | |
488 | rsp->SrvTime.Time, 0); | |
489 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
490 | (int)ts.tv_sec, (int)utc.tv_sec, | |
491 | (int)(utc.tv_sec - ts.tv_sec)); | |
492 | val = (int)(utc.tv_sec - ts.tv_sec); | |
493 | seconds = abs(val); | |
494 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
495 | remain = seconds % MIN_TZ_ADJ; | |
496 | if (remain >= (MIN_TZ_ADJ / 2)) | |
497 | result += MIN_TZ_ADJ; | |
498 | if (val < 0) | |
499 | result = -result; | |
500 | server->timeAdj = result; | |
501 | } else { | |
502 | server->timeAdj = (int)tmp; | |
503 | server->timeAdj *= 60; /* also in seconds */ | |
504 | } | |
505 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
506 | ||
507 | ||
508 | /* BB get server time for time conversions and add | |
509 | code to use it and timezone since this is not UTC */ | |
510 | ||
511 | if (rsp->EncryptionKeyLength == | |
512 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
513 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
514 | CIFS_CRYPTO_KEY_SIZE); | |
515 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
516 | return -EIO; /* need cryptkey unless plain text */ | |
517 | } | |
518 | ||
519 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
520 | return 0; | |
521 | } | |
522 | #else | |
523 | static inline int | |
3f618223 | 524 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
525 | { |
526 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
527 | return -EOPNOTSUPP; | |
528 | } | |
529 | #endif | |
530 | ||
9193400b | 531 | static bool |
3f618223 | 532 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 533 | { |
3f618223 JL |
534 | switch (sectype) { |
535 | case RawNTLMSSP: | |
536 | case Kerberos: | |
9193400b | 537 | return true; |
3f618223 JL |
538 | case Unspecified: |
539 | if (global_secflags & | |
540 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
541 | return true; | |
542 | /* Fallthrough */ | |
543 | default: | |
544 | return false; | |
545 | } | |
9193400b JL |
546 | } |
547 | ||
1da177e4 | 548 | int |
286170aa | 549 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
550 | { |
551 | NEGOTIATE_REQ *pSMB; | |
552 | NEGOTIATE_RSP *pSMBr; | |
553 | int rc = 0; | |
554 | int bytes_returned; | |
3979877e | 555 | int i; |
3534b850 | 556 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
557 | u16 count; |
558 | ||
3534b850 JL |
559 | if (!server) { |
560 | WARN(1, "%s: server is NULL!\n", __func__); | |
561 | return -EIO; | |
1da177e4 | 562 | } |
3534b850 | 563 | |
1da177e4 LT |
564 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
565 | (void **) &pSMB, (void **) &pSMBr); | |
566 | if (rc) | |
567 | return rc; | |
750d1151 | 568 | |
88257360 | 569 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 570 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 571 | |
3f618223 | 572 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 573 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
574 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
575 | } | |
50c2f753 | 576 | |
3979877e | 577 | count = 0; |
50c2f753 | 578 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
579 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
580 | count += strlen(protocols[i].name) + 1; | |
581 | /* null at end of source and target buffers anyway */ | |
582 | } | |
be8e3b00 | 583 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
584 | pSMB->ByteCount = cpu_to_le16(count); |
585 | ||
586 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
587 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 588 | if (rc != 0) |
254e55ed SF |
589 | goto neg_err_exit; |
590 | ||
9bf67e51 | 591 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 592 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 593 | /* Check wct = 1 error case */ |
9bf67e51 | 594 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 595 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 596 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
597 | could not negotiate a common dialect */ |
598 | rc = -EOPNOTSUPP; | |
599 | goto neg_err_exit; | |
790fe579 | 600 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 601 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 602 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 603 | goto signing_check; |
790fe579 | 604 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
605 | /* unknown wct */ |
606 | rc = -EOPNOTSUPP; | |
607 | goto neg_err_exit; | |
608 | } | |
2190eca1 JL |
609 | /* else wct == 17, NTLM or better */ |
610 | ||
96daf2b0 SF |
611 | server->sec_mode = pSMBr->SecurityMode; |
612 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 613 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 614 | |
254e55ed SF |
615 | /* one byte, so no need to convert this or EncryptionKeyLen from |
616 | little endian */ | |
10b9b98e PS |
617 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
618 | cifs_max_pending); | |
45275789 | 619 | set_credits(server, server->maxReq); |
254e55ed | 620 | /* probably no need to store and check maxvcs */ |
c974befa | 621 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 622 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 623 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 624 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
625 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
626 | server->timeAdj *= 60; | |
31d9e2bd | 627 | |
e598d1d8 JL |
628 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
629 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 630 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 631 | CIFS_CRYPTO_KEY_SIZE); |
e598d1d8 | 632 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
07cc6cf9 | 633 | server->capabilities & CAP_EXTENDED_SECURITY) && |
e598d1d8 JL |
634 | (pSMBr->EncryptionKeyLength == 0)) { |
635 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; | |
3f618223 | 636 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 637 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 638 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
639 | } else { |
640 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 641 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 642 | } |
254e55ed SF |
643 | |
644 | signing_check: | |
9ddec561 | 645 | if (!rc) |
38d77c50 | 646 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 647 | neg_err_exit: |
4a6d87f1 | 648 | cifs_buf_release(pSMB); |
254e55ed | 649 | |
f96637be | 650 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
651 | return rc; |
652 | } | |
653 | ||
654 | int | |
2e6e02ab | 655 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
656 | { |
657 | struct smb_hdr *smb_buffer; | |
1da177e4 | 658 | int rc = 0; |
1da177e4 | 659 | |
f96637be | 660 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 661 | |
f1987b44 JL |
662 | /* BB: do we need to check this? These should never be NULL. */ |
663 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
664 | return -EIO; | |
1da177e4 | 665 | |
f1987b44 JL |
666 | /* |
667 | * No need to return error on this operation if tid invalidated and | |
668 | * closed on server already e.g. due to tcp session crashing. Also, | |
669 | * the tcon is no longer on the list, so no need to take lock before | |
670 | * checking this. | |
671 | */ | |
268875b9 | 672 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 673 | return 0; |
1da177e4 | 674 | |
50c2f753 | 675 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 676 | (void **)&smb_buffer); |
f1987b44 | 677 | if (rc) |
1da177e4 | 678 | return rc; |
133672ef | 679 | |
792af7b0 | 680 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 681 | if (rc) |
f96637be | 682 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 683 | |
50c2f753 | 684 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 685 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
686 | if (rc == -EAGAIN) |
687 | rc = 0; | |
688 | ||
689 | return rc; | |
690 | } | |
691 | ||
766fdbb5 JL |
692 | /* |
693 | * This is a no-op for now. We're not really interested in the reply, but | |
694 | * rather in the fact that the server sent one and that server->lstrp | |
695 | * gets updated. | |
696 | * | |
697 | * FIXME: maybe we should consider checking that the reply matches request? | |
698 | */ | |
699 | static void | |
700 | cifs_echo_callback(struct mid_q_entry *mid) | |
701 | { | |
702 | struct TCP_Server_Info *server = mid->callback_data; | |
703 | ||
704 | DeleteMidQEntry(mid); | |
a891f0f8 | 705 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
706 | } |
707 | ||
708 | int | |
709 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
710 | { | |
711 | ECHO_REQ *smb; | |
712 | int rc = 0; | |
fcc31cb6 | 713 | struct kvec iov; |
fec344e3 JL |
714 | struct smb_rqst rqst = { .rq_iov = &iov, |
715 | .rq_nvec = 1 }; | |
766fdbb5 | 716 | |
f96637be | 717 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
718 | |
719 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
720 | if (rc) | |
721 | return rc; | |
722 | ||
723 | /* set up echo request */ | |
5443d130 | 724 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
725 | smb->hdr.WordCount = 1; |
726 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 727 | put_bcc(1, &smb->hdr); |
766fdbb5 | 728 | smb->Data[0] = 'a'; |
be8e3b00 | 729 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
730 | iov.iov_base = smb; |
731 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 732 | |
fec344e3 | 733 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f8 | 734 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 735 | if (rc) |
f96637be | 736 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
737 | |
738 | cifs_small_buf_release(smb); | |
739 | ||
740 | return rc; | |
741 | } | |
742 | ||
1da177e4 | 743 | int |
58c45c58 | 744 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 745 | { |
1da177e4 LT |
746 | LOGOFF_ANDX_REQ *pSMB; |
747 | int rc = 0; | |
1da177e4 | 748 | |
f96637be | 749 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 750 | |
14fbf50d JL |
751 | /* |
752 | * BB: do we need to check validity of ses and server? They should | |
753 | * always be valid since we have an active reference. If not, that | |
754 | * should probably be a BUG() | |
755 | */ | |
756 | if (!ses || !ses->server) | |
3b795210 SF |
757 | return -EIO; |
758 | ||
d7b619cf | 759 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
760 | if (ses->need_reconnect) |
761 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
762 | already closed due to reconnect */ | |
1da177e4 LT |
763 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
764 | if (rc) { | |
d7b619cf | 765 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
766 | return rc; |
767 | } | |
768 | ||
88257360 | 769 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 770 | |
38d77c50 JL |
771 | if (ses->server->sign) |
772 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
773 | |
774 | pSMB->hdr.Uid = ses->Suid; | |
775 | ||
776 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 777 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 778 | session_already_dead: |
d7b619cf | 779 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
780 | |
781 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 782 | since server closed smb session, no sense reporting |
1da177e4 LT |
783 | error */ |
784 | if (rc == -EAGAIN) | |
785 | rc = 0; | |
786 | return rc; | |
787 | } | |
788 | ||
2d785a50 | 789 | int |
6d5786a3 PS |
790 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
791 | const char *fileName, __u16 type, | |
792 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
793 | { |
794 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
795 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
796 | struct unlink_psx_rq *pRqD; | |
797 | int name_len; | |
798 | int rc = 0; | |
799 | int bytes_returned = 0; | |
800 | __u16 params, param_offset, offset, byte_count; | |
801 | ||
f96637be | 802 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
803 | PsxDelete: |
804 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
805 | (void **) &pSMBr); | |
806 | if (rc) | |
807 | return rc; | |
808 | ||
809 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
810 | name_len = | |
acbbb76a SF |
811 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
812 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
813 | name_len++; /* trailing null */ |
814 | name_len *= 2; | |
815 | } else { /* BB add path length overrun check */ | |
816 | name_len = strnlen(fileName, PATH_MAX); | |
817 | name_len++; /* trailing null */ | |
818 | strncpy(pSMB->FileName, fileName, name_len); | |
819 | } | |
820 | ||
821 | params = 6 + name_len; | |
822 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
823 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
824 | pSMB->MaxSetupCount = 0; | |
825 | pSMB->Reserved = 0; | |
826 | pSMB->Flags = 0; | |
827 | pSMB->Timeout = 0; | |
828 | pSMB->Reserved2 = 0; | |
829 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
830 | InformationLevel) - 4; | |
831 | offset = param_offset + params; | |
832 | ||
833 | /* Setup pointer to Request Data (inode type) */ | |
834 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
835 | pRqD->type = cpu_to_le16(type); | |
836 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
837 | pSMB->DataOffset = cpu_to_le16(offset); | |
838 | pSMB->SetupCount = 1; | |
839 | pSMB->Reserved3 = 0; | |
840 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
841 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
842 | ||
843 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
844 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
845 | pSMB->ParameterCount = cpu_to_le16(params); | |
846 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
847 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
848 | pSMB->Reserved4 = 0; | |
be8e3b00 | 849 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
850 | pSMB->ByteCount = cpu_to_le16(byte_count); |
851 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
852 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 853 | if (rc) |
f96637be | 854 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
855 | cifs_buf_release(pSMB); |
856 | ||
44c58186 | 857 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
858 | |
859 | if (rc == -EAGAIN) | |
860 | goto PsxDelete; | |
861 | ||
862 | return rc; | |
863 | } | |
864 | ||
1da177e4 | 865 | int |
ed6875e0 PS |
866 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
867 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
868 | { |
869 | DELETE_FILE_REQ *pSMB = NULL; | |
870 | DELETE_FILE_RSP *pSMBr = NULL; | |
871 | int rc = 0; | |
872 | int bytes_returned; | |
873 | int name_len; | |
ed6875e0 | 874 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 LT |
875 | |
876 | DelFileRetry: | |
877 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
878 | (void **) &pSMBr); | |
879 | if (rc) | |
880 | return rc; | |
881 | ||
882 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
883 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
884 | PATH_MAX, cifs_sb->local_nls, | |
885 | remap); | |
1da177e4 LT |
886 | name_len++; /* trailing null */ |
887 | name_len *= 2; | |
09d1db5c | 888 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 889 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 890 | name_len++; /* trailing null */ |
ed6875e0 | 891 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
892 | } |
893 | pSMB->SearchAttributes = | |
894 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
895 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 896 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
897 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
898 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
899 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 900 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 901 | if (rc) |
f96637be | 902 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
903 | |
904 | cifs_buf_release(pSMB); | |
905 | if (rc == -EAGAIN) | |
906 | goto DelFileRetry; | |
907 | ||
908 | return rc; | |
909 | } | |
910 | ||
911 | int | |
f958ca5d PS |
912 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
913 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
914 | { |
915 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
916 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
917 | int rc = 0; | |
918 | int bytes_returned; | |
919 | int name_len; | |
f958ca5d | 920 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 921 | |
f96637be | 922 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
923 | RmDirRetry: |
924 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
925 | (void **) &pSMBr); | |
926 | if (rc) | |
927 | return rc; | |
928 | ||
929 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
930 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
931 | PATH_MAX, cifs_sb->local_nls, | |
932 | remap); | |
1da177e4 LT |
933 | name_len++; /* trailing null */ |
934 | name_len *= 2; | |
09d1db5c | 935 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 936 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 937 | name_len++; /* trailing null */ |
f958ca5d | 938 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
939 | } |
940 | ||
941 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 942 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
943 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
944 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
945 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 946 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 947 | if (rc) |
f96637be | 948 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
949 | |
950 | cifs_buf_release(pSMB); | |
951 | if (rc == -EAGAIN) | |
952 | goto RmDirRetry; | |
953 | return rc; | |
954 | } | |
955 | ||
956 | int | |
f436720e PS |
957 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
958 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
959 | { |
960 | int rc = 0; | |
961 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
962 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
963 | int bytes_returned; | |
964 | int name_len; | |
f436720e | 965 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 966 | |
f96637be | 967 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
968 | MkDirRetry: |
969 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
970 | (void **) &pSMBr); | |
971 | if (rc) | |
972 | return rc; | |
973 | ||
974 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 975 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
976 | PATH_MAX, cifs_sb->local_nls, |
977 | remap); | |
1da177e4 LT |
978 | name_len++; /* trailing null */ |
979 | name_len *= 2; | |
09d1db5c | 980 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
981 | name_len = strnlen(name, PATH_MAX); |
982 | name_len++; /* trailing null */ | |
983 | strncpy(pSMB->DirName, name, name_len); | |
984 | } | |
985 | ||
986 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 987 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
988 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
989 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
990 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 991 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 992 | if (rc) |
f96637be | 993 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 994 | |
1da177e4 LT |
995 | cifs_buf_release(pSMB); |
996 | if (rc == -EAGAIN) | |
997 | goto MkDirRetry; | |
998 | return rc; | |
999 | } | |
1000 | ||
2dd29d31 | 1001 | int |
6d5786a3 PS |
1002 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1003 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1004 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1005 | const char *name, const struct nls_table *nls_codepage, | |
1006 | int remap) | |
2dd29d31 SF |
1007 | { |
1008 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1009 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1010 | int name_len; | |
1011 | int rc = 0; | |
1012 | int bytes_returned = 0; | |
2dd29d31 | 1013 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1014 | OPEN_PSX_REQ *pdata; |
1015 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1016 | |
f96637be | 1017 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1018 | PsxCreat: |
1019 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1020 | (void **) &pSMBr); | |
1021 | if (rc) | |
1022 | return rc; | |
1023 | ||
1024 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1025 | name_len = | |
acbbb76a SF |
1026 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1027 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1028 | name_len++; /* trailing null */ |
1029 | name_len *= 2; | |
1030 | } else { /* BB improve the check for buffer overruns BB */ | |
1031 | name_len = strnlen(name, PATH_MAX); | |
1032 | name_len++; /* trailing null */ | |
1033 | strncpy(pSMB->FileName, name, name_len); | |
1034 | } | |
1035 | ||
1036 | params = 6 + name_len; | |
1037 | count = sizeof(OPEN_PSX_REQ); | |
1038 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1039 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1040 | pSMB->MaxSetupCount = 0; | |
1041 | pSMB->Reserved = 0; | |
1042 | pSMB->Flags = 0; | |
1043 | pSMB->Timeout = 0; | |
1044 | pSMB->Reserved2 = 0; | |
1045 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1046 | InformationLevel) - 4; |
2dd29d31 | 1047 | offset = param_offset + params; |
2dd29d31 | 1048 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1049 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1050 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1051 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1052 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1053 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1054 | pSMB->DataOffset = cpu_to_le16(offset); | |
1055 | pSMB->SetupCount = 1; | |
1056 | pSMB->Reserved3 = 0; | |
1057 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1058 | byte_count = 3 /* pad */ + params + count; | |
1059 | ||
1060 | pSMB->DataCount = cpu_to_le16(count); | |
1061 | pSMB->ParameterCount = cpu_to_le16(params); | |
1062 | pSMB->TotalDataCount = pSMB->DataCount; | |
1063 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1064 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1065 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1066 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1067 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1068 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1069 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1070 | if (rc) { | |
f96637be | 1071 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1072 | goto psx_create_err; |
1073 | } | |
1074 | ||
f96637be | 1075 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1076 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1077 | ||
820a803f | 1078 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1079 | rc = -EIO; /* bad smb */ |
1080 | goto psx_create_err; | |
1081 | } | |
1082 | ||
1083 | /* copy return information to pRetData */ | |
50c2f753 | 1084 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1085 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1086 | |
2dd29d31 | 1087 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1088 | if (netfid) |
2dd29d31 SF |
1089 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1090 | /* Let caller know file was created so we can set the mode. */ | |
1091 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1092 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1093 | *pOplock |= CIFS_CREATE_ACTION; |
1094 | /* check to make sure response data is there */ | |
8f2376ad CG |
1095 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1096 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1097 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1098 | } else { |
820a803f | 1099 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1100 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1101 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1102 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1103 | goto psx_create_err; |
1104 | } | |
50c2f753 | 1105 | memcpy((char *) pRetData, |
cbac3cba | 1106 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1107 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1108 | } |
2dd29d31 SF |
1109 | |
1110 | psx_create_err: | |
1111 | cifs_buf_release(pSMB); | |
1112 | ||
65bc98b0 | 1113 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1114 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1115 | else |
44c58186 | 1116 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1117 | |
1118 | if (rc == -EAGAIN) | |
1119 | goto PsxCreat; | |
1120 | ||
50c2f753 | 1121 | return rc; |
2dd29d31 SF |
1122 | } |
1123 | ||
a9d02ad4 SF |
1124 | static __u16 convert_disposition(int disposition) |
1125 | { | |
1126 | __u16 ofun = 0; | |
1127 | ||
1128 | switch (disposition) { | |
1129 | case FILE_SUPERSEDE: | |
1130 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1131 | break; | |
1132 | case FILE_OPEN: | |
1133 | ofun = SMBOPEN_OAPPEND; | |
1134 | break; | |
1135 | case FILE_CREATE: | |
1136 | ofun = SMBOPEN_OCREATE; | |
1137 | break; | |
1138 | case FILE_OPEN_IF: | |
1139 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1140 | break; | |
1141 | case FILE_OVERWRITE: | |
1142 | ofun = SMBOPEN_OTRUNC; | |
1143 | break; | |
1144 | case FILE_OVERWRITE_IF: | |
1145 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | default: | |
f96637be | 1148 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1149 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1150 | } | |
1151 | return ofun; | |
1152 | } | |
1153 | ||
35fc37d5 JL |
1154 | static int |
1155 | access_flags_to_smbopen_mode(const int access_flags) | |
1156 | { | |
1157 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1158 | ||
1159 | if (masked_flags == GENERIC_READ) | |
1160 | return SMBOPEN_READ; | |
1161 | else if (masked_flags == GENERIC_WRITE) | |
1162 | return SMBOPEN_WRITE; | |
1163 | ||
1164 | /* just go for read/write */ | |
1165 | return SMBOPEN_READWRITE; | |
1166 | } | |
1167 | ||
a9d02ad4 | 1168 | int |
6d5786a3 | 1169 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1170 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1171 | const int access_flags, const int create_options, __u16 *netfid, |
1172 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1173 | const struct nls_table *nls_codepage, int remap) |
1174 | { | |
1175 | int rc = -EACCES; | |
1176 | OPENX_REQ *pSMB = NULL; | |
1177 | OPENX_RSP *pSMBr = NULL; | |
1178 | int bytes_returned; | |
1179 | int name_len; | |
1180 | __u16 count; | |
1181 | ||
1182 | OldOpenRetry: | |
1183 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1184 | (void **) &pSMBr); | |
1185 | if (rc) | |
1186 | return rc; | |
1187 | ||
1188 | pSMB->AndXCommand = 0xFF; /* none */ | |
1189 | ||
1190 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1191 | count = 1; /* account for one byte pad to word boundary */ | |
1192 | name_len = | |
acbbb76a SF |
1193 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1194 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1195 | name_len++; /* trailing null */ |
1196 | name_len *= 2; | |
1197 | } else { /* BB improve check for buffer overruns BB */ | |
1198 | count = 0; /* no pad */ | |
1199 | name_len = strnlen(fileName, PATH_MAX); | |
1200 | name_len++; /* trailing null */ | |
1201 | strncpy(pSMB->fileName, fileName, name_len); | |
1202 | } | |
1203 | if (*pOplock & REQ_OPLOCK) | |
1204 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1205 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1206 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1207 | |
a9d02ad4 | 1208 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1209 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1210 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1211 | /* set file as system file if special file such | |
1212 | as fifo and server expecting SFU style and | |
1213 | no Unix extensions */ | |
1214 | ||
790fe579 SF |
1215 | if (create_options & CREATE_OPTION_SPECIAL) |
1216 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1217 | else /* BB FIXME BB */ |
1218 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1219 | |
67750fb9 JL |
1220 | if (create_options & CREATE_OPTION_READONLY) |
1221 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1222 | |
1223 | /* BB FIXME BB */ | |
50c2f753 SF |
1224 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1225 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1226 | /* BB FIXME END BB */ |
3e87d803 SF |
1227 | |
1228 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1229 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1230 | count += name_len; |
be8e3b00 | 1231 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1232 | |
1233 | pSMB->ByteCount = cpu_to_le16(count); | |
1234 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1235 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1236 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1237 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1238 | if (rc) { |
f96637be | 1239 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1240 | } else { |
1241 | /* BB verify if wct == 15 */ | |
1242 | ||
582d21e5 | 1243 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1244 | |
1245 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1246 | /* Let caller know file was created so we can set the mode. */ | |
1247 | /* Do we care about the CreateAction in any other cases? */ | |
1248 | /* BB FIXME BB */ | |
790fe579 | 1249 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1250 | *pOplock |= CIFS_CREATE_ACTION; */ |
1251 | /* BB FIXME END */ | |
1252 | ||
790fe579 | 1253 | if (pfile_info) { |
a9d02ad4 SF |
1254 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1255 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1256 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1257 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1258 | pfile_info->Attributes = |
50c2f753 | 1259 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1260 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1261 | pfile_info->AllocationSize = |
1262 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1263 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1264 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1265 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1266 | } |
1267 | } | |
1268 | ||
1269 | cifs_buf_release(pSMB); | |
1270 | if (rc == -EAGAIN) | |
1271 | goto OldOpenRetry; | |
1272 | return rc; | |
1273 | } | |
1274 | ||
1da177e4 | 1275 | int |
d81b8a40 PS |
1276 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1277 | FILE_ALL_INFO *buf) | |
1da177e4 LT |
1278 | { |
1279 | int rc = -EACCES; | |
9bf4fa01 PS |
1280 | OPEN_REQ *req = NULL; |
1281 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1282 | int bytes_returned; |
1283 | int name_len; | |
1284 | __u16 count; | |
d81b8a40 PS |
1285 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1286 | struct cifs_tcon *tcon = oparms->tcon; | |
1287 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; | |
1288 | const struct nls_table *nls = cifs_sb->local_nls; | |
1289 | int create_options = oparms->create_options; | |
1290 | int desired_access = oparms->desired_access; | |
1291 | int disposition = oparms->disposition; | |
1292 | const char *path = oparms->path; | |
1da177e4 LT |
1293 | |
1294 | openRetry: | |
9bf4fa01 PS |
1295 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1296 | (void **)&rsp); | |
1da177e4 LT |
1297 | if (rc) |
1298 | return rc; | |
1299 | ||
9bf4fa01 PS |
1300 | /* no commands go after this */ |
1301 | req->AndXCommand = 0xFF; | |
1da177e4 | 1302 | |
9bf4fa01 PS |
1303 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1304 | /* account for one byte pad to word boundary */ | |
1305 | count = 1; | |
1306 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1307 | path, PATH_MAX, nls, remap); | |
1308 | /* trailing null */ | |
1309 | name_len++; | |
1da177e4 | 1310 | name_len *= 2; |
9bf4fa01 PS |
1311 | req->NameLength = cpu_to_le16(name_len); |
1312 | } else { | |
1313 | /* BB improve check for buffer overruns BB */ | |
1314 | /* no pad */ | |
1315 | count = 0; | |
1316 | name_len = strnlen(path, PATH_MAX); | |
1317 | /* trailing null */ | |
1318 | name_len++; | |
1319 | req->NameLength = cpu_to_le16(name_len); | |
1320 | strncpy(req->fileName, path, name_len); | |
1da177e4 | 1321 | } |
9bf4fa01 PS |
1322 | |
1323 | if (*oplock & REQ_OPLOCK) | |
1324 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1325 | else if (*oplock & REQ_BATCHOPLOCK) | |
1326 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1327 | ||
1328 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1329 | req->AllocationSize = 0; | |
1330 | ||
1331 | /* | |
1332 | * Set file as system file if special file such as fifo and server | |
1333 | * expecting SFU style and no Unix extensions. | |
1334 | */ | |
790fe579 | 1335 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1336 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1337 | else |
9bf4fa01 | 1338 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1339 | |
9bf4fa01 PS |
1340 | /* |
1341 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1342 | * sensitive checks for other servers such as Samba. | |
1343 | */ | |
1da177e4 | 1344 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1345 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1346 | |
67750fb9 | 1347 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1348 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1349 | ||
1350 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1351 | req->CreateDisposition = cpu_to_le32(disposition); | |
1352 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1353 | |
09d1db5c | 1354 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1355 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1356 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1357 | |
1358 | count += name_len; | |
9bf4fa01 | 1359 | inc_rfc1001_len(req, count); |
1da177e4 | 1360 | |
9bf4fa01 PS |
1361 | req->ByteCount = cpu_to_le16(count); |
1362 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1363 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1364 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1365 | if (rc) { |
f96637be | 1366 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1367 | cifs_buf_release(req); |
1368 | if (rc == -EAGAIN) | |
1369 | goto openRetry; | |
1370 | return rc; | |
1da177e4 | 1371 | } |
a5a2b489 | 1372 | |
9bf4fa01 PS |
1373 | /* 1 byte no need to le_to_cpu */ |
1374 | *oplock = rsp->OplockLevel; | |
1375 | /* cifs fid stays in le */ | |
d81b8a40 | 1376 | oparms->fid->netfid = rsp->Fid; |
9bf4fa01 PS |
1377 | |
1378 | /* Let caller know file was created so we can set the mode. */ | |
1379 | /* Do we care about the CreateAction in any other cases? */ | |
1380 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1381 | *oplock |= CIFS_CREATE_ACTION; | |
1382 | ||
1383 | if (buf) { | |
1384 | /* copy from CreationTime to Attributes */ | |
1385 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1386 | /* the file_info buf is endian converted by caller */ | |
1387 | buf->AllocationSize = rsp->AllocationSize; | |
1388 | buf->EndOfFile = rsp->EndOfFile; | |
1389 | buf->NumberOfLinks = cpu_to_le32(1); | |
1390 | buf->DeletePending = 0; | |
1391 | } | |
1392 | ||
1393 | cifs_buf_release(req); | |
1da177e4 LT |
1394 | return rc; |
1395 | } | |
1396 | ||
e28bc5b1 JL |
1397 | /* |
1398 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1399 | * current bigbuf. | |
1400 | */ | |
1401 | static int | |
1402 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1403 | { | |
5ffef7bf | 1404 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1405 | int remaining = rfclen + 4 - server->total_read; |
1406 | struct cifs_readdata *rdata = mid->callback_data; | |
1407 | ||
1408 | while (remaining > 0) { | |
1409 | int length; | |
1410 | ||
1411 | length = cifs_read_from_socket(server, server->bigbuf, | |
1412 | min_t(unsigned int, remaining, | |
1887f601 | 1413 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1414 | if (length < 0) |
1415 | return length; | |
1416 | server->total_read += length; | |
1417 | remaining -= length; | |
1418 | } | |
1419 | ||
1420 | dequeue_mid(mid, rdata->result); | |
1421 | return 0; | |
1422 | } | |
1423 | ||
09a4707e | 1424 | int |
e28bc5b1 JL |
1425 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1426 | { | |
1427 | int length, len; | |
8d5ce4d2 | 1428 | unsigned int data_offset, data_len; |
e28bc5b1 | 1429 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1430 | char *buf = server->smallbuf; |
1431 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1432 | |
f96637be JP |
1433 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1434 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1435 | |
1436 | /* | |
1437 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1438 | * can if there's not enough data. At this point, we've read down to | |
1439 | * the Mid. | |
1440 | */ | |
eb378711 | 1441 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1442 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1443 | |
5819575e JL |
1444 | rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1; |
1445 | rdata->iov.iov_len = len; | |
e28bc5b1 | 1446 | |
5819575e | 1447 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); |
e28bc5b1 JL |
1448 | if (length < 0) |
1449 | return length; | |
1450 | server->total_read += length; | |
1451 | ||
1452 | /* Was the SMB read successful? */ | |
eb378711 | 1453 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1454 | if (rdata->result != 0) { |
f96637be JP |
1455 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1456 | __func__, rdata->result); | |
e28bc5b1 JL |
1457 | return cifs_readv_discard(server, mid); |
1458 | } | |
1459 | ||
1460 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1461 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1462 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1463 | __func__, server->total_read, | |
1464 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1465 | rdata->result = -EIO; |
1466 | return cifs_readv_discard(server, mid); | |
1467 | } | |
1468 | ||
eb378711 | 1469 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1470 | if (data_offset < server->total_read) { |
1471 | /* | |
1472 | * win2k8 sometimes sends an offset of 0 when the read | |
1473 | * is beyond the EOF. Treat it as if the data starts just after | |
1474 | * the header. | |
1475 | */ | |
f96637be JP |
1476 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1477 | __func__, data_offset); | |
e28bc5b1 JL |
1478 | data_offset = server->total_read; |
1479 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1480 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1481 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1482 | __func__, data_offset); | |
e28bc5b1 JL |
1483 | rdata->result = -EIO; |
1484 | return cifs_readv_discard(server, mid); | |
1485 | } | |
1486 | ||
f96637be JP |
1487 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1488 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1489 | |
1490 | len = data_offset - server->total_read; | |
1491 | if (len > 0) { | |
1492 | /* read any junk before data into the rest of smallbuf */ | |
5819575e JL |
1493 | rdata->iov.iov_base = buf + server->total_read; |
1494 | rdata->iov.iov_len = len; | |
1495 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); | |
e28bc5b1 JL |
1496 | if (length < 0) |
1497 | return length; | |
1498 | server->total_read += length; | |
1499 | } | |
1500 | ||
1501 | /* set up first iov for signature check */ | |
5819575e JL |
1502 | rdata->iov.iov_base = buf; |
1503 | rdata->iov.iov_len = server->total_read; | |
f96637be JP |
1504 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1505 | rdata->iov.iov_base, rdata->iov.iov_len); | |
e28bc5b1 JL |
1506 | |
1507 | /* how much data is in the response? */ | |
eb378711 | 1508 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1509 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1510 | /* data_len is corrupt -- discard frame */ |
1511 | rdata->result = -EIO; | |
1512 | return cifs_readv_discard(server, mid); | |
1513 | } | |
1514 | ||
8321fec4 JL |
1515 | length = rdata->read_into_pages(server, rdata, data_len); |
1516 | if (length < 0) | |
1517 | return length; | |
e28bc5b1 | 1518 | |
8321fec4 | 1519 | server->total_read += length; |
e28bc5b1 JL |
1520 | rdata->bytes = length; |
1521 | ||
f96637be JP |
1522 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1523 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1524 | |
1525 | /* discard anything left over */ | |
5ffef7bf | 1526 | if (server->total_read < buflen) |
e28bc5b1 JL |
1527 | return cifs_readv_discard(server, mid); |
1528 | ||
1529 | dequeue_mid(mid, false); | |
1530 | return length; | |
1531 | } | |
1532 | ||
e28bc5b1 JL |
1533 | static void |
1534 | cifs_readv_callback(struct mid_q_entry *mid) | |
1535 | { | |
1536 | struct cifs_readdata *rdata = mid->callback_data; | |
1537 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1538 | struct TCP_Server_Info *server = tcon->ses->server; | |
5819575e JL |
1539 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
1540 | .rq_nvec = 1, | |
8321fec4 JL |
1541 | .rq_pages = rdata->pages, |
1542 | .rq_npages = rdata->nr_pages, | |
1543 | .rq_pagesz = rdata->pagesz, | |
1544 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1545 | |
f96637be JP |
1546 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1547 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1548 | rdata->bytes); | |
e28bc5b1 | 1549 | |
7c9421e1 | 1550 | switch (mid->mid_state) { |
e28bc5b1 JL |
1551 | case MID_RESPONSE_RECEIVED: |
1552 | /* result already set, check signature */ | |
38d77c50 | 1553 | if (server->sign) { |
985e4ff0 SF |
1554 | int rc = 0; |
1555 | ||
bf5ea0e2 | 1556 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1557 | mid->sequence_number); |
985e4ff0 | 1558 | if (rc) |
f96637be JP |
1559 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1560 | rc); | |
e28bc5b1 JL |
1561 | } |
1562 | /* FIXME: should this be counted toward the initiating task? */ | |
1563 | task_io_account_read(rdata->bytes); | |
1564 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1565 | break; | |
1566 | case MID_REQUEST_SUBMITTED: | |
1567 | case MID_RETRY_NEEDED: | |
1568 | rdata->result = -EAGAIN; | |
1569 | break; | |
1570 | default: | |
1571 | rdata->result = -EIO; | |
1572 | } | |
1573 | ||
da472fc8 | 1574 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1575 | DeleteMidQEntry(mid); |
a891f0f8 | 1576 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1577 | } |
1578 | ||
1579 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1580 | int | |
1581 | cifs_async_readv(struct cifs_readdata *rdata) | |
1582 | { | |
1583 | int rc; | |
1584 | READ_REQ *smb = NULL; | |
1585 | int wct; | |
1586 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
5819575e | 1587 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3 | 1588 | .rq_nvec = 1 }; |
e28bc5b1 | 1589 | |
f96637be JP |
1590 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1591 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1592 | |
1593 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1594 | wct = 12; | |
1595 | else { | |
1596 | wct = 10; /* old style read */ | |
1597 | if ((rdata->offset >> 32) > 0) { | |
1598 | /* can not handle this big offset for old */ | |
1599 | return -EIO; | |
1600 | } | |
1601 | } | |
1602 | ||
1603 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1604 | if (rc) | |
1605 | return rc; | |
1606 | ||
1607 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1608 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1609 | ||
1610 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1611 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1612 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1613 | if (wct == 12) | |
1614 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1615 | smb->Remaining = 0; | |
1616 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1617 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1618 | if (wct == 12) | |
1619 | smb->ByteCount = 0; | |
1620 | else { | |
1621 | /* old style read */ | |
1622 | struct smb_com_readx_req *smbr = | |
1623 | (struct smb_com_readx_req *)smb; | |
1624 | smbr->ByteCount = 0; | |
1625 | } | |
1626 | ||
1627 | /* 4 for RFC1001 length + 1 for BCC */ | |
5819575e JL |
1628 | rdata->iov.iov_base = smb; |
1629 | rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
e28bc5b1 | 1630 | |
6993f74a | 1631 | kref_get(&rdata->refcount); |
fec344e3 JL |
1632 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
1633 | cifs_readv_callback, rdata, 0); | |
e28bc5b1 JL |
1634 | |
1635 | if (rc == 0) | |
44c58186 | 1636 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1637 | else |
1638 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1639 | |
1640 | cifs_small_buf_release(smb); | |
1641 | return rc; | |
1642 | } | |
1643 | ||
1da177e4 | 1644 | int |
6d5786a3 PS |
1645 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1646 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1647 | { |
1648 | int rc = -EACCES; | |
1649 | READ_REQ *pSMB = NULL; | |
1650 | READ_RSP *pSMBr = NULL; | |
1651 | char *pReadData = NULL; | |
bfa0d75a | 1652 | int wct; |
ec637e3f SF |
1653 | int resp_buf_type = 0; |
1654 | struct kvec iov[1]; | |
d4ffff1f PS |
1655 | __u32 pid = io_parms->pid; |
1656 | __u16 netfid = io_parms->netfid; | |
1657 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1658 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1659 | unsigned int count = io_parms->length; |
1da177e4 | 1660 | |
f96637be | 1661 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1662 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1663 | wct = 12; |
4c3130ef | 1664 | else { |
bfa0d75a | 1665 | wct = 10; /* old style read */ |
d4ffff1f | 1666 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1667 | /* can not handle this big offset for old */ |
1668 | return -EIO; | |
1669 | } | |
1670 | } | |
1da177e4 LT |
1671 | |
1672 | *nbytes = 0; | |
ec637e3f | 1673 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1674 | if (rc) |
1675 | return rc; | |
1676 | ||
d4ffff1f PS |
1677 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1678 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1679 | ||
1da177e4 LT |
1680 | /* tcon and ses pointer are checked in smb_init */ |
1681 | if (tcon->ses->server == NULL) | |
1682 | return -ECONNABORTED; | |
1683 | ||
ec637e3f | 1684 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1685 | pSMB->Fid = netfid; |
d4ffff1f | 1686 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1687 | if (wct == 12) |
d4ffff1f | 1688 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1689 | |
1da177e4 LT |
1690 | pSMB->Remaining = 0; |
1691 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1692 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1693 | if (wct == 12) |
bfa0d75a SF |
1694 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1695 | else { | |
1696 | /* old style read */ | |
50c2f753 | 1697 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1698 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1699 | pSMBW->ByteCount = 0; |
bfa0d75a | 1700 | } |
ec637e3f SF |
1701 | |
1702 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1703 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1704 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1705 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1706 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1707 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1708 | if (rc) { |
f96637be | 1709 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1710 | } else { |
1711 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1712 | data_length = data_length << 16; | |
1713 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1714 | *nbytes = data_length; | |
1715 | ||
1716 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1717 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1718 | || (data_length > count)) { |
f96637be | 1719 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1720 | data_length, count); |
1da177e4 LT |
1721 | rc = -EIO; |
1722 | *nbytes = 0; | |
1723 | } else { | |
ec637e3f | 1724 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1725 | le16_to_cpu(pSMBr->DataOffset); |
1726 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1727 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1728 | rc = -EFAULT; |
26f57364 | 1729 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1730 | if (*buf) |
50c2f753 | 1731 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1732 | } |
1733 | } | |
1da177e4 | 1734 | |
4b8f930f | 1735 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1736 | if (*buf) { |
1737 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1738 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1739 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1740 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1741 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1742 | /* return buffer to caller to free */ |
1743 | *buf = iov[0].iov_base; | |
790fe579 | 1744 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1745 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1746 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1747 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1748 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1749 | |
1750 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1751 | since file handle passed in no longer valid */ |
1752 | return rc; | |
1753 | } | |
1754 | ||
ec637e3f | 1755 | |
1da177e4 | 1756 | int |
6d5786a3 | 1757 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 | 1758 | unsigned int *nbytes, const char *buf, |
50c2f753 | 1759 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1760 | { |
1761 | int rc = -EACCES; | |
1762 | WRITE_REQ *pSMB = NULL; | |
1763 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1764 | int bytes_returned, wct; |
1da177e4 LT |
1765 | __u32 bytes_sent; |
1766 | __u16 byte_count; | |
fa2989f4 PS |
1767 | __u32 pid = io_parms->pid; |
1768 | __u16 netfid = io_parms->netfid; | |
1769 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1770 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1771 | unsigned int count = io_parms->length; |
1da177e4 | 1772 | |
a24e2d7d SF |
1773 | *nbytes = 0; |
1774 | ||
f96637be | 1775 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1776 | if (tcon->ses == NULL) |
1c955187 SF |
1777 | return -ECONNABORTED; |
1778 | ||
790fe579 | 1779 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1780 | wct = 14; |
4c3130ef | 1781 | else { |
1c955187 | 1782 | wct = 12; |
4c3130ef SF |
1783 | if ((offset >> 32) > 0) { |
1784 | /* can not handle big offset for old srv */ | |
1785 | return -EIO; | |
1786 | } | |
1787 | } | |
1c955187 SF |
1788 | |
1789 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1790 | (void **) &pSMBr); |
1791 | if (rc) | |
1792 | return rc; | |
fa2989f4 PS |
1793 | |
1794 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1795 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1796 | ||
1da177e4 LT |
1797 | /* tcon and ses pointer are checked in smb_init */ |
1798 | if (tcon->ses->server == NULL) | |
1799 | return -ECONNABORTED; | |
1800 | ||
1801 | pSMB->AndXCommand = 0xFF; /* none */ | |
1802 | pSMB->Fid = netfid; | |
1803 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1804 | if (wct == 14) |
1c955187 | 1805 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1806 | |
1da177e4 LT |
1807 | pSMB->Reserved = 0xFFFFFFFF; |
1808 | pSMB->WriteMode = 0; | |
1809 | pSMB->Remaining = 0; | |
1810 | ||
50c2f753 | 1811 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1812 | can send more if LARGE_WRITE_X capability returned by the server and if |
1813 | our buffer is big enough or if we convert to iovecs on socket writes | |
1814 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1815 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1816 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1817 | } else { | |
1818 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1819 | & ~0xFF; | |
1820 | } | |
1821 | ||
1822 | if (bytes_sent > count) | |
1823 | bytes_sent = count; | |
1824 | pSMB->DataOffset = | |
50c2f753 | 1825 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1826 | if (buf) |
61e74801 | 1827 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1828 | else if (ubuf) { |
1829 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1830 | cifs_buf_release(pSMB); |
1831 | return -EFAULT; | |
1832 | } | |
e30dcf3a | 1833 | } else if (count != 0) { |
1da177e4 LT |
1834 | /* No buffer */ |
1835 | cifs_buf_release(pSMB); | |
1836 | return -EINVAL; | |
e30dcf3a | 1837 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1838 | if (wct == 14) |
e30dcf3a | 1839 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1840 | else /* wct == 12 */ |
e30dcf3a | 1841 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1842 | |
1da177e4 LT |
1843 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1844 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1845 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1846 | |
790fe579 | 1847 | if (wct == 14) |
1c955187 | 1848 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1849 | else { /* old style write has byte count 4 bytes earlier |
1850 | so 4 bytes pad */ | |
1851 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1852 | (struct smb_com_writex_req *)pSMB; |
1853 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1854 | } | |
1da177e4 LT |
1855 | |
1856 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1857 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
44c58186 | 1858 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1859 | if (rc) { |
f96637be | 1860 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1861 | } else { |
1862 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1863 | *nbytes = (*nbytes) << 16; | |
1864 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1865 | |
1866 | /* | |
1867 | * Mask off high 16 bits when bytes written as returned by the | |
1868 | * server is greater than bytes requested by the client. Some | |
1869 | * OS/2 servers are known to set incorrect CountHigh values. | |
1870 | */ | |
1871 | if (*nbytes > count) | |
1872 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1873 | } |
1874 | ||
1875 | cifs_buf_release(pSMB); | |
1876 | ||
50c2f753 | 1877 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1878 | since file handle passed in no longer valid */ |
1879 | ||
1880 | return rc; | |
1881 | } | |
1882 | ||
c28c89fc JL |
1883 | void |
1884 | cifs_writedata_release(struct kref *refcount) | |
1885 | { | |
1886 | struct cifs_writedata *wdata = container_of(refcount, | |
1887 | struct cifs_writedata, refcount); | |
1888 | ||
1889 | if (wdata->cfile) | |
1890 | cifsFileInfo_put(wdata->cfile); | |
1891 | ||
1892 | kfree(wdata); | |
1893 | } | |
1894 | ||
1895 | /* | |
1896 | * Write failed with a retryable error. Resend the write request. It's also | |
1897 | * possible that the page was redirtied so re-clean the page. | |
1898 | */ | |
1899 | static void | |
1900 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1901 | { | |
1902 | int i, rc; | |
1903 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
c9de5c80 | 1904 | struct TCP_Server_Info *server; |
c28c89fc JL |
1905 | |
1906 | for (i = 0; i < wdata->nr_pages; i++) { | |
1907 | lock_page(wdata->pages[i]); | |
1908 | clear_page_dirty_for_io(wdata->pages[i]); | |
1909 | } | |
1910 | ||
1911 | do { | |
c9de5c80 | 1912 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
4a5c80d7 | 1913 | rc = server->ops->async_writev(wdata, cifs_writedata_release); |
c28c89fc JL |
1914 | } while (rc == -EAGAIN); |
1915 | ||
1916 | for (i = 0; i < wdata->nr_pages; i++) { | |
94e18007 | 1917 | unlock_page(wdata->pages[i]); |
c51bb0ea | 1918 | if (rc != 0) { |
c28c89fc | 1919 | SetPageError(wdata->pages[i]); |
c51bb0ea OM |
1920 | end_page_writeback(wdata->pages[i]); |
1921 | page_cache_release(wdata->pages[i]); | |
1922 | } | |
c28c89fc JL |
1923 | } |
1924 | ||
1925 | mapping_set_error(inode->i_mapping, rc); | |
1926 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1927 | } | |
1928 | ||
c2e87640 | 1929 | void |
c28c89fc JL |
1930 | cifs_writev_complete(struct work_struct *work) |
1931 | { | |
1932 | struct cifs_writedata *wdata = container_of(work, | |
1933 | struct cifs_writedata, work); | |
1934 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1935 | int i = 0; | |
1936 | ||
1937 | if (wdata->result == 0) { | |
597b027f | 1938 | spin_lock(&inode->i_lock); |
c28c89fc | 1939 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1940 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1941 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1942 | wdata->bytes); | |
1943 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1944 | return cifs_writev_requeue(wdata); | |
1945 | ||
1946 | for (i = 0; i < wdata->nr_pages; i++) { | |
1947 | struct page *page = wdata->pages[i]; | |
1948 | if (wdata->result == -EAGAIN) | |
1949 | __set_page_dirty_nobuffers(page); | |
1950 | else if (wdata->result < 0) | |
1951 | SetPageError(page); | |
1952 | end_page_writeback(page); | |
1953 | page_cache_release(page); | |
1954 | } | |
1955 | if (wdata->result != -EAGAIN) | |
1956 | mapping_set_error(inode->i_mapping, wdata->result); | |
1957 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1958 | } | |
1959 | ||
1960 | struct cifs_writedata * | |
c2e87640 | 1961 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1962 | { |
1963 | struct cifs_writedata *wdata; | |
1964 | ||
c28c89fc JL |
1965 | /* writedata + number of page pointers */ |
1966 | wdata = kzalloc(sizeof(*wdata) + | |
26c8f0d6 | 1967 | sizeof(struct page *) * nr_pages, GFP_NOFS); |
c28c89fc | 1968 | if (wdata != NULL) { |
c28c89fc | 1969 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1970 | INIT_LIST_HEAD(&wdata->list); |
1971 | init_completion(&wdata->done); | |
1972 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1973 | } |
1974 | return wdata; | |
1975 | } | |
1976 | ||
1977 | /* | |
7c9421e1 | 1978 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1979 | * workqueue completion task. |
1980 | */ | |
1981 | static void | |
1982 | cifs_writev_callback(struct mid_q_entry *mid) | |
1983 | { | |
1984 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1985 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1986 | unsigned int written; |
1987 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1988 | ||
7c9421e1 | 1989 | switch (mid->mid_state) { |
c28c89fc JL |
1990 | case MID_RESPONSE_RECEIVED: |
1991 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1992 | if (wdata->result != 0) | |
1993 | break; | |
1994 | ||
1995 | written = le16_to_cpu(smb->CountHigh); | |
1996 | written <<= 16; | |
1997 | written += le16_to_cpu(smb->Count); | |
1998 | /* | |
1999 | * Mask off high 16 bits when bytes written as returned | |
2000 | * by the server is greater than bytes requested by the | |
2001 | * client. OS/2 servers are known to set incorrect | |
2002 | * CountHigh values. | |
2003 | */ | |
2004 | if (written > wdata->bytes) | |
2005 | written &= 0xFFFF; | |
2006 | ||
2007 | if (written < wdata->bytes) | |
2008 | wdata->result = -ENOSPC; | |
2009 | else | |
2010 | wdata->bytes = written; | |
2011 | break; | |
2012 | case MID_REQUEST_SUBMITTED: | |
2013 | case MID_RETRY_NEEDED: | |
2014 | wdata->result = -EAGAIN; | |
2015 | break; | |
2016 | default: | |
2017 | wdata->result = -EIO; | |
2018 | break; | |
2019 | } | |
2020 | ||
da472fc8 | 2021 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2022 | DeleteMidQEntry(mid); |
a891f0f8 | 2023 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2024 | } |
2025 | ||
2026 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2027 | int | |
4a5c80d7 SF |
2028 | cifs_async_writev(struct cifs_writedata *wdata, |
2029 | void (*release)(struct kref *kref)) | |
c28c89fc | 2030 | { |
eddb079d | 2031 | int rc = -EACCES; |
c28c89fc JL |
2032 | WRITE_REQ *smb = NULL; |
2033 | int wct; | |
96daf2b0 | 2034 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079d | 2035 | struct kvec iov; |
fec344e3 | 2036 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2037 | |
2038 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2039 | wct = 14; | |
2040 | } else { | |
2041 | wct = 12; | |
2042 | if (wdata->offset >> 32 > 0) { | |
2043 | /* can not handle big offset for old srv */ | |
2044 | return -EIO; | |
2045 | } | |
2046 | } | |
2047 | ||
2048 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2049 | if (rc) | |
2050 | goto async_writev_out; | |
2051 | ||
fe5f5d2e JL |
2052 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2053 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2054 | |
c28c89fc | 2055 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2056 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2057 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2058 | if (wct == 14) | |
2059 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2060 | smb->Reserved = 0xFFFFFFFF; | |
2061 | smb->WriteMode = 0; | |
2062 | smb->Remaining = 0; | |
2063 | ||
2064 | smb->DataOffset = | |
2065 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2066 | ||
2067 | /* 4 for RFC1001 length + 1 for BCC */ | |
eddb079d JL |
2068 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; |
2069 | iov.iov_base = smb; | |
c28c89fc | 2070 | |
eddb079d JL |
2071 | rqst.rq_iov = &iov; |
2072 | rqst.rq_nvec = 1; | |
2073 | rqst.rq_pages = wdata->pages; | |
2074 | rqst.rq_npages = wdata->nr_pages; | |
2075 | rqst.rq_pagesz = wdata->pagesz; | |
2076 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2077 | |
f96637be JP |
2078 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2079 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2080 | |
2081 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2082 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2083 | ||
2084 | if (wct == 14) { | |
2085 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2086 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2087 | } else { | |
2088 | /* wct == 12 */ | |
2089 | struct smb_com_writex_req *smbw = | |
2090 | (struct smb_com_writex_req *)smb; | |
2091 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2092 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
eddb079d | 2093 | iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2094 | } |
2095 | ||
2096 | kref_get(&wdata->refcount); | |
fec344e3 JL |
2097 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
2098 | cifs_writev_callback, wdata, 0); | |
c28c89fc JL |
2099 | |
2100 | if (rc == 0) | |
44c58186 | 2101 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2102 | else |
4a5c80d7 | 2103 | kref_put(&wdata->refcount, release); |
c28c89fc | 2104 | |
c28c89fc JL |
2105 | async_writev_out: |
2106 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2107 | return rc; |
2108 | } | |
2109 | ||
d6e04ae6 | 2110 | int |
6d5786a3 | 2111 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2112 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2113 | { |
2114 | int rc = -EACCES; | |
2115 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2116 | int wct; |
d6e04ae6 | 2117 | int smb_hdr_len; |
ec637e3f | 2118 | int resp_buf_type = 0; |
fa2989f4 PS |
2119 | __u32 pid = io_parms->pid; |
2120 | __u16 netfid = io_parms->netfid; | |
2121 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2122 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2123 | unsigned int count = io_parms->length; |
1da177e4 | 2124 | |
fbec9ab9 JL |
2125 | *nbytes = 0; |
2126 | ||
f96637be | 2127 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2128 | |
4c3130ef | 2129 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2130 | wct = 14; |
4c3130ef | 2131 | } else { |
8cc64c6e | 2132 | wct = 12; |
4c3130ef SF |
2133 | if ((offset >> 32) > 0) { |
2134 | /* can not handle big offset for old srv */ | |
2135 | return -EIO; | |
2136 | } | |
2137 | } | |
8cc64c6e | 2138 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2139 | if (rc) |
2140 | return rc; | |
fa2989f4 PS |
2141 | |
2142 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2143 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2144 | ||
1da177e4 LT |
2145 | /* tcon and ses pointer are checked in smb_init */ |
2146 | if (tcon->ses->server == NULL) | |
2147 | return -ECONNABORTED; | |
2148 | ||
d6e04ae6 | 2149 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2150 | pSMB->Fid = netfid; |
2151 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2152 | if (wct == 14) |
8cc64c6e | 2153 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2154 | pSMB->Reserved = 0xFFFFFFFF; |
2155 | pSMB->WriteMode = 0; | |
2156 | pSMB->Remaining = 0; | |
d6e04ae6 | 2157 | |
1da177e4 | 2158 | pSMB->DataOffset = |
50c2f753 | 2159 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2160 | |
3e84469d SF |
2161 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2162 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2163 | /* header + 1 byte pad */ |
2164 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2165 | if (wct == 14) |
be8e3b00 | 2166 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2167 | else /* wct == 12 */ |
be8e3b00 | 2168 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2169 | if (wct == 14) |
8cc64c6e SF |
2170 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2171 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2172 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2173 | (struct smb_com_writex_req *)pSMB; |
2174 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2175 | } | |
3e84469d | 2176 | iov[0].iov_base = pSMB; |
790fe579 | 2177 | if (wct == 14) |
ec637e3f SF |
2178 | iov[0].iov_len = smb_hdr_len + 4; |
2179 | else /* wct == 12 pad bigger by four bytes */ | |
2180 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2181 | |
1da177e4 | 2182 | |
ba9ad725 | 2183 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c58186 | 2184 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2185 | if (rc) { |
f96637be | 2186 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2187 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2188 | /* presumably this can not happen, but best to be safe */ |
2189 | rc = -EIO; | |
d6e04ae6 | 2190 | } else { |
ad7a2926 | 2191 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2192 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2193 | *nbytes = (*nbytes) << 16; | |
2194 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2195 | |
2196 | /* | |
2197 | * Mask off high 16 bits when bytes written as returned by the | |
2198 | * server is greater than bytes requested by the client. OS/2 | |
2199 | * servers are known to set incorrect CountHigh values. | |
2200 | */ | |
2201 | if (*nbytes > count) | |
2202 | *nbytes &= 0xFFFF; | |
50c2f753 | 2203 | } |
1da177e4 | 2204 | |
4b8f930f | 2205 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2206 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2207 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2208 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2209 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2210 | |
50c2f753 | 2211 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2212 | since file handle passed in no longer valid */ |
2213 | ||
2214 | return rc; | |
2215 | } | |
d6e04ae6 | 2216 | |
6d5786a3 PS |
2217 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2218 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2219 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2220 | { | |
2221 | int rc = 0; | |
2222 | LOCK_REQ *pSMB = NULL; | |
2223 | struct kvec iov[2]; | |
2224 | int resp_buf_type; | |
2225 | __u16 count; | |
2226 | ||
f96637be JP |
2227 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2228 | num_lock, num_unlock); | |
9ee305b7 PS |
2229 | |
2230 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2231 | if (rc) | |
2232 | return rc; | |
2233 | ||
2234 | pSMB->Timeout = 0; | |
2235 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2236 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2237 | pSMB->LockType = lock_type; | |
2238 | pSMB->AndXCommand = 0xFF; /* none */ | |
2239 | pSMB->Fid = netfid; /* netfid stays le */ | |
2240 | ||
2241 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2242 | inc_rfc1001_len(pSMB, count); | |
2243 | pSMB->ByteCount = cpu_to_le16(count); | |
2244 | ||
2245 | iov[0].iov_base = (char *)pSMB; | |
2246 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2247 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2248 | iov[1].iov_base = (char *)buf; | |
2249 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2250 | ||
44c58186 | 2251 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2252 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2253 | if (rc) | |
f96637be | 2254 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2255 | |
2256 | return rc; | |
2257 | } | |
d6e04ae6 | 2258 | |
1da177e4 | 2259 | int |
6d5786a3 | 2260 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2261 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2262 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2263 | const __u32 numLock, const __u8 lockType, |
2264 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2265 | { |
2266 | int rc = 0; | |
2267 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2268 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2269 | int bytes_returned; |
a891f0f8 | 2270 | int flags = 0; |
1da177e4 LT |
2271 | __u16 count; |
2272 | ||
f96637be JP |
2273 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2274 | (int)waitFlag, numLock); | |
46810cbf SF |
2275 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2276 | ||
1da177e4 LT |
2277 | if (rc) |
2278 | return rc; | |
2279 | ||
790fe579 | 2280 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2281 | /* no response expected */ |
2282 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2283 | pSMB->Timeout = 0; |
4b18f2a9 | 2284 | } else if (waitFlag) { |
a891f0f8 | 2285 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2286 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2287 | } else { | |
2288 | pSMB->Timeout = 0; | |
2289 | } | |
2290 | ||
2291 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2292 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2293 | pSMB->LockType = lockType; | |
12fed00d | 2294 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2295 | pSMB->AndXCommand = 0xFF; /* none */ |
2296 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2297 | ||
790fe579 | 2298 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2299 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2300 | /* BB where to store pid high? */ |
2301 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2302 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2303 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2304 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2305 | count = sizeof(LOCKING_ANDX_RANGE); | |
2306 | } else { | |
2307 | /* oplock break */ | |
2308 | count = 0; | |
2309 | } | |
be8e3b00 | 2310 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2311 | pSMB->ByteCount = cpu_to_le16(count); |
2312 | ||
7ee1af76 JA |
2313 | if (waitFlag) { |
2314 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2315 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2316 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2317 | } else { |
a891f0f8 | 2318 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2319 | /* SMB buffer freed by function above */ |
7ee1af76 | 2320 | } |
44c58186 | 2321 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2322 | if (rc) |
f96637be | 2323 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2324 | |
50c2f753 | 2325 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2326 | since file handle passed in no longer valid */ |
2327 | return rc; | |
2328 | } | |
2329 | ||
08547b03 | 2330 | int |
6d5786a3 | 2331 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2332 | const __u16 smb_file_id, const __u32 netpid, |
2333 | const loff_t start_offset, const __u64 len, | |
2334 | struct file_lock *pLockData, const __u16 lock_type, | |
2335 | const bool waitFlag) | |
08547b03 SF |
2336 | { |
2337 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2338 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2339 | struct cifs_posix_lock *parm_data; |
2340 | int rc = 0; | |
3a5ff61c | 2341 | int timeout = 0; |
08547b03 | 2342 | int bytes_returned = 0; |
133672ef | 2343 | int resp_buf_type = 0; |
08547b03 | 2344 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2345 | struct kvec iov[1]; |
08547b03 | 2346 | |
f96637be | 2347 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2348 | |
08547b03 SF |
2349 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2350 | ||
2351 | if (rc) | |
2352 | return rc; | |
2353 | ||
2354 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2355 | ||
50c2f753 | 2356 | params = 6; |
08547b03 SF |
2357 | pSMB->MaxSetupCount = 0; |
2358 | pSMB->Reserved = 0; | |
2359 | pSMB->Flags = 0; | |
08547b03 SF |
2360 | pSMB->Reserved2 = 0; |
2361 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2362 | offset = param_offset + params; | |
2363 | ||
08547b03 SF |
2364 | count = sizeof(struct cifs_posix_lock); |
2365 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2366 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2367 | pSMB->SetupCount = 1; |
2368 | pSMB->Reserved3 = 0; | |
c5fd363d | 2369 | if (pLockData) |
08547b03 SF |
2370 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2371 | else | |
2372 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2373 | byte_count = 3 /* pad */ + params + count; | |
2374 | pSMB->DataCount = cpu_to_le16(count); | |
2375 | pSMB->ParameterCount = cpu_to_le16(params); | |
2376 | pSMB->TotalDataCount = pSMB->DataCount; | |
2377 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2378 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2379 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2380 | (((char *) &pSMB->hdr.Protocol) + offset); |
2381 | ||
2382 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2383 | if (waitFlag) { |
133672ef | 2384 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2385 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2386 | pSMB->Timeout = cpu_to_le32(-1); |
2387 | } else | |
2388 | pSMB->Timeout = 0; | |
2389 | ||
4f6bcec9 | 2390 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2391 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2392 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2393 | |
2394 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2395 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2396 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2397 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2398 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2399 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2400 | if (waitFlag) { |
2401 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2402 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2403 | } else { | |
133672ef | 2404 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2405 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2406 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2407 | &resp_buf_type, timeout); | |
2408 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2409 | not try to free it twice below on exit */ | |
2410 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2411 | } |
2412 | ||
08547b03 | 2413 | if (rc) { |
f96637be | 2414 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2415 | } else if (pLockData) { |
fc94cdb9 SF |
2416 | /* lock structure can be returned on get */ |
2417 | __u16 data_offset; | |
2418 | __u16 data_count; | |
2419 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2420 | ||
820a803f | 2421 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2422 | rc = -EIO; /* bad smb */ |
2423 | goto plk_err_exit; | |
2424 | } | |
fc94cdb9 SF |
2425 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2426 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2427 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2428 | rc = -EIO; |
2429 | goto plk_err_exit; | |
2430 | } | |
2431 | parm_data = (struct cifs_posix_lock *) | |
2432 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2433 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2434 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2435 | else { |
2436 | if (parm_data->lock_type == | |
2437 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2438 | pLockData->fl_type = F_RDLCK; | |
2439 | else if (parm_data->lock_type == | |
2440 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2441 | pLockData->fl_type = F_WRLCK; | |
2442 | ||
5443d130 SF |
2443 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2444 | pLockData->fl_end = pLockData->fl_start + | |
2445 | le64_to_cpu(parm_data->length) - 1; | |
2446 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2447 | } |
08547b03 | 2448 | } |
50c2f753 | 2449 | |
fc94cdb9 | 2450 | plk_err_exit: |
08547b03 SF |
2451 | if (pSMB) |
2452 | cifs_small_buf_release(pSMB); | |
2453 | ||
133672ef SF |
2454 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2455 | cifs_small_buf_release(iov[0].iov_base); | |
2456 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2457 | cifs_buf_release(iov[0].iov_base); | |
2458 | ||
08547b03 SF |
2459 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2460 | since file handle passed in no longer valid */ | |
2461 | ||
2462 | return rc; | |
2463 | } | |
2464 | ||
2465 | ||
1da177e4 | 2466 | int |
6d5786a3 | 2467 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2468 | { |
2469 | int rc = 0; | |
2470 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2471 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2472 | |
2473 | /* do not retry on dead session on close */ | |
2474 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2475 | if (rc == -EAGAIN) |
1da177e4 LT |
2476 | return 0; |
2477 | if (rc) | |
2478 | return rc; | |
2479 | ||
1da177e4 | 2480 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2481 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2482 | pSMB->ByteCount = 0; |
792af7b0 | 2483 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2484 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2485 | if (rc) { |
790fe579 | 2486 | if (rc != -EINTR) { |
1da177e4 | 2487 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2488 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2489 | } |
2490 | } | |
2491 | ||
1da177e4 | 2492 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2493 | if (rc == -EAGAIN) |
1da177e4 LT |
2494 | rc = 0; |
2495 | ||
2496 | return rc; | |
2497 | } | |
2498 | ||
b298f223 | 2499 | int |
6d5786a3 | 2500 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2501 | { |
2502 | int rc = 0; | |
2503 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2504 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2505 | |
2506 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2507 | if (rc) | |
2508 | return rc; | |
2509 | ||
2510 | pSMB->FileID = (__u16) smb_file_id; | |
2511 | pSMB->ByteCount = 0; | |
792af7b0 | 2512 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2513 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2514 | if (rc) |
f96637be | 2515 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2516 | |
2517 | return rc; | |
2518 | } | |
2519 | ||
1da177e4 | 2520 | int |
6d5786a3 | 2521 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2522 | const char *from_name, const char *to_name, |
2523 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2524 | { |
2525 | int rc = 0; | |
2526 | RENAME_REQ *pSMB = NULL; | |
2527 | RENAME_RSP *pSMBr = NULL; | |
2528 | int bytes_returned; | |
2529 | int name_len, name_len2; | |
2530 | __u16 count; | |
8ceb9843 | 2531 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2532 | |
f96637be | 2533 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2534 | renameRetry: |
2535 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2536 | (void **) &pSMBr); | |
2537 | if (rc) | |
2538 | return rc; | |
2539 | ||
2540 | pSMB->BufferFormat = 0x04; | |
2541 | pSMB->SearchAttributes = | |
2542 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2543 | ATTR_DIRECTORY); | |
2544 | ||
2545 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2546 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2547 | from_name, PATH_MAX, | |
2548 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2549 | name_len++; /* trailing null */ |
2550 | name_len *= 2; | |
2551 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2552 | /* protocol requires ASCII signature byte on Unicode string */ | |
2553 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2554 | name_len2 = | |
acbbb76a | 2555 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2556 | to_name, PATH_MAX, cifs_sb->local_nls, |
2557 | remap); | |
1da177e4 LT |
2558 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2559 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2560 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2561 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2562 | name_len++; /* trailing null */ |
8ceb9843 PS |
2563 | strncpy(pSMB->OldFileName, from_name, name_len); |
2564 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2565 | name_len2++; /* trailing null */ |
2566 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2567 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2568 | name_len2++; /* trailing null */ |
2569 | name_len2++; /* signature byte */ | |
2570 | } | |
2571 | ||
2572 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2573 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2574 | pSMB->ByteCount = cpu_to_le16(count); |
2575 | ||
2576 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2577 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2578 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2579 | if (rc) |
f96637be | 2580 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2581 | |
1da177e4 LT |
2582 | cifs_buf_release(pSMB); |
2583 | ||
2584 | if (rc == -EAGAIN) | |
2585 | goto renameRetry; | |
2586 | ||
2587 | return rc; | |
2588 | } | |
2589 | ||
6d5786a3 | 2590 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2591 | int netfid, const char *target_name, |
50c2f753 | 2592 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2593 | { |
2594 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2595 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2596 | struct set_file_rename *rename_info; |
1da177e4 LT |
2597 | char *data_offset; |
2598 | char dummy_string[30]; | |
2599 | int rc = 0; | |
2600 | int bytes_returned = 0; | |
2601 | int len_of_str; | |
2602 | __u16 params, param_offset, offset, count, byte_count; | |
2603 | ||
f96637be | 2604 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2605 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2606 | (void **) &pSMBr); | |
2607 | if (rc) | |
2608 | return rc; | |
2609 | ||
2610 | params = 6; | |
2611 | pSMB->MaxSetupCount = 0; | |
2612 | pSMB->Reserved = 0; | |
2613 | pSMB->Flags = 0; | |
2614 | pSMB->Timeout = 0; | |
2615 | pSMB->Reserved2 = 0; | |
2616 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2617 | offset = param_offset + params; | |
2618 | ||
2619 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2620 | rename_info = (struct set_file_rename *) data_offset; | |
2621 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2622 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2623 | pSMB->SetupCount = 1; |
2624 | pSMB->Reserved3 = 0; | |
2625 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2626 | byte_count = 3 /* pad */ + params; | |
2627 | pSMB->ParameterCount = cpu_to_le16(params); | |
2628 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2629 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2630 | pSMB->DataOffset = cpu_to_le16(offset); | |
2631 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2632 | rename_info->overwrite = cpu_to_le32(1); | |
2633 | rename_info->root_fid = 0; | |
2634 | /* unicode only call */ | |
790fe579 | 2635 | if (target_name == NULL) { |
50c2f753 | 2636 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2637 | len_of_str = |
2638 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2639 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2640 | } else { |
acbbb76a SF |
2641 | len_of_str = |
2642 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2643 | target_name, PATH_MAX, nls_codepage, |
2644 | remap); | |
1da177e4 LT |
2645 | } |
2646 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2647 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2648 | byte_count += count; |
2649 | pSMB->DataCount = cpu_to_le16(count); | |
2650 | pSMB->TotalDataCount = pSMB->DataCount; | |
2651 | pSMB->Fid = netfid; | |
2652 | pSMB->InformationLevel = | |
2653 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2654 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2655 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2656 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2657 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2658 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2659 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2660 | if (rc) |
f96637be JP |
2661 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2662 | rc); | |
a5a2b489 | 2663 | |
1da177e4 LT |
2664 | cifs_buf_release(pSMB); |
2665 | ||
2666 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2667 | since file handle passed in no longer valid */ | |
2668 | ||
2669 | return rc; | |
2670 | } | |
2671 | ||
2672 | int | |
6d5786a3 PS |
2673 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2674 | const char *fromName, const __u16 target_tid, const char *toName, | |
2675 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2676 | { |
2677 | int rc = 0; | |
2678 | COPY_REQ *pSMB = NULL; | |
2679 | COPY_RSP *pSMBr = NULL; | |
2680 | int bytes_returned; | |
2681 | int name_len, name_len2; | |
2682 | __u16 count; | |
2683 | ||
f96637be | 2684 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2685 | copyRetry: |
2686 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2687 | (void **) &pSMBr); | |
2688 | if (rc) | |
2689 | return rc; | |
2690 | ||
2691 | pSMB->BufferFormat = 0x04; | |
2692 | pSMB->Tid2 = target_tid; | |
2693 | ||
2694 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2695 | ||
2696 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2697 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2698 | fromName, PATH_MAX, nls_codepage, | |
2699 | remap); | |
1da177e4 LT |
2700 | name_len++; /* trailing null */ |
2701 | name_len *= 2; | |
2702 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2703 | /* protocol requires ASCII signature byte on Unicode string */ | |
2704 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2705 | name_len2 = |
acbbb76a SF |
2706 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2707 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2708 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2709 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2710 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2711 | name_len = strnlen(fromName, PATH_MAX); |
2712 | name_len++; /* trailing null */ | |
2713 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2714 | name_len2 = strnlen(toName, PATH_MAX); | |
2715 | name_len2++; /* trailing null */ | |
2716 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2717 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2718 | name_len2++; /* trailing null */ | |
2719 | name_len2++; /* signature byte */ | |
2720 | } | |
2721 | ||
2722 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2723 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2724 | pSMB->ByteCount = cpu_to_le16(count); |
2725 | ||
2726 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2727 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2728 | if (rc) { | |
f96637be JP |
2729 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2730 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2731 | } |
0d817bc0 | 2732 | cifs_buf_release(pSMB); |
1da177e4 LT |
2733 | |
2734 | if (rc == -EAGAIN) | |
2735 | goto copyRetry; | |
2736 | ||
2737 | return rc; | |
2738 | } | |
2739 | ||
2740 | int | |
6d5786a3 | 2741 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2742 | const char *fromName, const char *toName, |
2743 | const struct nls_table *nls_codepage) | |
2744 | { | |
2745 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2746 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2747 | char *data_offset; | |
2748 | int name_len; | |
2749 | int name_len_target; | |
2750 | int rc = 0; | |
2751 | int bytes_returned = 0; | |
2752 | __u16 params, param_offset, offset, byte_count; | |
2753 | ||
f96637be | 2754 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2755 | createSymLinkRetry: |
2756 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2757 | (void **) &pSMBr); | |
2758 | if (rc) | |
2759 | return rc; | |
2760 | ||
2761 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2762 | name_len = | |
acbbb76a SF |
2763 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2764 | /* find define for this maxpathcomponent */ | |
2765 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2766 | name_len++; /* trailing null */ |
2767 | name_len *= 2; | |
2768 | ||
50c2f753 | 2769 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2770 | name_len = strnlen(fromName, PATH_MAX); |
2771 | name_len++; /* trailing null */ | |
2772 | strncpy(pSMB->FileName, fromName, name_len); | |
2773 | } | |
2774 | params = 6 + name_len; | |
2775 | pSMB->MaxSetupCount = 0; | |
2776 | pSMB->Reserved = 0; | |
2777 | pSMB->Flags = 0; | |
2778 | pSMB->Timeout = 0; | |
2779 | pSMB->Reserved2 = 0; | |
2780 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2781 | InformationLevel) - 4; |
1da177e4 LT |
2782 | offset = param_offset + params; |
2783 | ||
2784 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2785 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2786 | name_len_target = | |
acbbb76a SF |
2787 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2788 | /* find define for this maxpathcomponent */ | |
2789 | , nls_codepage); | |
1da177e4 LT |
2790 | name_len_target++; /* trailing null */ |
2791 | name_len_target *= 2; | |
50c2f753 | 2792 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2793 | name_len_target = strnlen(toName, PATH_MAX); |
2794 | name_len_target++; /* trailing null */ | |
2795 | strncpy(data_offset, toName, name_len_target); | |
2796 | } | |
2797 | ||
2798 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2799 | /* BB find exact max on data count below from sess */ | |
2800 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2801 | pSMB->SetupCount = 1; | |
2802 | pSMB->Reserved3 = 0; | |
2803 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2804 | byte_count = 3 /* pad */ + params + name_len_target; | |
2805 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2806 | pSMB->ParameterCount = cpu_to_le16(params); | |
2807 | pSMB->TotalDataCount = pSMB->DataCount; | |
2808 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2809 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2810 | pSMB->DataOffset = cpu_to_le16(offset); | |
2811 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2812 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2813 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2814 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2815 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2816 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2817 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2818 | if (rc) |
f96637be JP |
2819 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2820 | rc); | |
1da177e4 | 2821 | |
0d817bc0 | 2822 | cifs_buf_release(pSMB); |
1da177e4 LT |
2823 | |
2824 | if (rc == -EAGAIN) | |
2825 | goto createSymLinkRetry; | |
2826 | ||
2827 | return rc; | |
2828 | } | |
2829 | ||
2830 | int | |
6d5786a3 | 2831 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2832 | const char *fromName, const char *toName, |
737b758c | 2833 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2834 | { |
2835 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2836 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2837 | char *data_offset; | |
2838 | int name_len; | |
2839 | int name_len_target; | |
2840 | int rc = 0; | |
2841 | int bytes_returned = 0; | |
2842 | __u16 params, param_offset, offset, byte_count; | |
2843 | ||
f96637be | 2844 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2845 | createHardLinkRetry: |
2846 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2847 | (void **) &pSMBr); | |
2848 | if (rc) | |
2849 | return rc; | |
2850 | ||
2851 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2852 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2853 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2854 | name_len++; /* trailing null */ |
2855 | name_len *= 2; | |
2856 | ||
50c2f753 | 2857 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2858 | name_len = strnlen(toName, PATH_MAX); |
2859 | name_len++; /* trailing null */ | |
2860 | strncpy(pSMB->FileName, toName, name_len); | |
2861 | } | |
2862 | params = 6 + name_len; | |
2863 | pSMB->MaxSetupCount = 0; | |
2864 | pSMB->Reserved = 0; | |
2865 | pSMB->Flags = 0; | |
2866 | pSMB->Timeout = 0; | |
2867 | pSMB->Reserved2 = 0; | |
2868 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2869 | InformationLevel) - 4; |
1da177e4 LT |
2870 | offset = param_offset + params; |
2871 | ||
2872 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2873 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2874 | name_len_target = | |
acbbb76a SF |
2875 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2876 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2877 | name_len_target++; /* trailing null */ |
2878 | name_len_target *= 2; | |
50c2f753 | 2879 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2880 | name_len_target = strnlen(fromName, PATH_MAX); |
2881 | name_len_target++; /* trailing null */ | |
2882 | strncpy(data_offset, fromName, name_len_target); | |
2883 | } | |
2884 | ||
2885 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2886 | /* BB find exact max on data count below from sess*/ | |
2887 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2888 | pSMB->SetupCount = 1; | |
2889 | pSMB->Reserved3 = 0; | |
2890 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2891 | byte_count = 3 /* pad */ + params + name_len_target; | |
2892 | pSMB->ParameterCount = cpu_to_le16(params); | |
2893 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2894 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2895 | pSMB->TotalDataCount = pSMB->DataCount; | |
2896 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2897 | pSMB->DataOffset = cpu_to_le16(offset); | |
2898 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2899 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2900 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2901 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2902 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2903 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2904 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2905 | if (rc) |
f96637be JP |
2906 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2907 | rc); | |
1da177e4 LT |
2908 | |
2909 | cifs_buf_release(pSMB); | |
2910 | if (rc == -EAGAIN) | |
2911 | goto createHardLinkRetry; | |
2912 | ||
2913 | return rc; | |
2914 | } | |
2915 | ||
2916 | int | |
6d5786a3 | 2917 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2918 | const char *from_name, const char *to_name, |
2919 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2920 | { |
2921 | int rc = 0; | |
2922 | NT_RENAME_REQ *pSMB = NULL; | |
2923 | RENAME_RSP *pSMBr = NULL; | |
2924 | int bytes_returned; | |
2925 | int name_len, name_len2; | |
2926 | __u16 count; | |
d6e906f1 | 2927 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2928 | |
f96637be | 2929 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2930 | winCreateHardLinkRetry: |
2931 | ||
2932 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2933 | (void **) &pSMBr); | |
2934 | if (rc) | |
2935 | return rc; | |
2936 | ||
2937 | pSMB->SearchAttributes = | |
2938 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2939 | ATTR_DIRECTORY); | |
2940 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2941 | pSMB->ClusterCount = 0; | |
2942 | ||
2943 | pSMB->BufferFormat = 0x04; | |
2944 | ||
2945 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2946 | name_len = | |
d6e906f1 SF |
2947 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2948 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2949 | name_len++; /* trailing null */ |
2950 | name_len *= 2; | |
fcc7c09d JL |
2951 | |
2952 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2953 | pSMB->OldFileName[name_len] = 0x04; | |
2954 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2955 | name_len2 = |
acbbb76a | 2956 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2957 | to_name, PATH_MAX, cifs_sb->local_nls, |
2958 | remap); | |
1da177e4 LT |
2959 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2960 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2961 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 2962 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2963 | name_len++; /* trailing null */ |
d6e906f1 SF |
2964 | strncpy(pSMB->OldFileName, from_name, name_len); |
2965 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2966 | name_len2++; /* trailing null */ |
2967 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 2968 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2969 | name_len2++; /* trailing null */ |
2970 | name_len2++; /* signature byte */ | |
2971 | } | |
2972 | ||
2973 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2974 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2975 | pSMB->ByteCount = cpu_to_le16(count); |
2976 | ||
2977 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2978 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2979 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2980 | if (rc) |
f96637be | 2981 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 2982 | |
1da177e4 LT |
2983 | cifs_buf_release(pSMB); |
2984 | if (rc == -EAGAIN) | |
2985 | goto winCreateHardLinkRetry; | |
2986 | ||
2987 | return rc; | |
2988 | } | |
2989 | ||
2990 | int | |
6d5786a3 | 2991 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2992 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2993 | const struct nls_table *nls_codepage) |
2994 | { | |
2995 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2996 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2997 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2998 | int rc = 0; | |
2999 | int bytes_returned; | |
3000 | int name_len; | |
3001 | __u16 params, byte_count; | |
460b9696 | 3002 | char *data_start; |
1da177e4 | 3003 | |
f96637be | 3004 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3005 | |
3006 | querySymLinkRetry: | |
3007 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3008 | (void **) &pSMBr); | |
3009 | if (rc) | |
3010 | return rc; | |
3011 | ||
3012 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3013 | name_len = | |
acbbb76a SF |
3014 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3015 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3016 | name_len++; /* trailing null */ |
3017 | name_len *= 2; | |
50c2f753 | 3018 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3019 | name_len = strnlen(searchName, PATH_MAX); |
3020 | name_len++; /* trailing null */ | |
3021 | strncpy(pSMB->FileName, searchName, name_len); | |
3022 | } | |
3023 | ||
3024 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3025 | pSMB->TotalDataCount = 0; | |
3026 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3027 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3028 | pSMB->MaxSetupCount = 0; |
3029 | pSMB->Reserved = 0; | |
3030 | pSMB->Flags = 0; | |
3031 | pSMB->Timeout = 0; | |
3032 | pSMB->Reserved2 = 0; | |
3033 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3034 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3035 | pSMB->DataCount = 0; |
3036 | pSMB->DataOffset = 0; | |
3037 | pSMB->SetupCount = 1; | |
3038 | pSMB->Reserved3 = 0; | |
3039 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3040 | byte_count = params + 1 /* pad */ ; | |
3041 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3042 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3043 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3044 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3045 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3046 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3047 | ||
3048 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3049 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3050 | if (rc) { | |
f96637be | 3051 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3052 | } else { |
3053 | /* decode response */ | |
3054 | ||
3055 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3056 | /* BB also check enough total bytes returned */ |
820a803f | 3057 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3058 | rc = -EIO; |
1da177e4 | 3059 | else { |
0e0d2cf3 | 3060 | bool is_unicode; |
460b9696 JL |
3061 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3062 | ||
3063 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3064 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3065 | |
0e0d2cf3 SF |
3066 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3067 | is_unicode = true; | |
3068 | else | |
3069 | is_unicode = false; | |
3070 | ||
737b758c | 3071 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3072 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3073 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3074 | if (!*symlinkinfo) |
460b9696 | 3075 | rc = -ENOMEM; |
1da177e4 LT |
3076 | } |
3077 | } | |
3078 | cifs_buf_release(pSMB); | |
3079 | if (rc == -EAGAIN) | |
3080 | goto querySymLinkRetry; | |
3081 | return rc; | |
3082 | } | |
3083 | ||
c52a9554 SF |
3084 | /* |
3085 | * Recent Windows versions now create symlinks more frequently | |
3086 | * and they use the "reparse point" mechanism below. We can of course | |
3087 | * do symlinks nicely to Samba and other servers which support the | |
3088 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3089 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3090 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3091 | * In the interim this code has been moved to its own config option so | |
3092 | * it is not compiled in by default until callers fixed up and more tested. | |
3093 | */ | |
1da177e4 | 3094 | int |
d244bf2d PS |
3095 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3096 | __u16 fid, char **symlinkinfo, | |
3097 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3098 | { |
3099 | int rc = 0; | |
3100 | int bytes_returned; | |
50c2f753 SF |
3101 | struct smb_com_transaction_ioctl_req *pSMB; |
3102 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3103 | bool is_unicode; |
3104 | unsigned int sub_len; | |
3105 | char *sub_start; | |
c31f3307 SF |
3106 | struct reparse_symlink_data *reparse_buf; |
3107 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3108 | __u32 data_offset, data_count; |
3109 | char *end_of_smb; | |
3110 | ||
3111 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3112 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3113 | (void **) &pSMBr); | |
3114 | if (rc) | |
3115 | return rc; | |
3116 | ||
3117 | pSMB->TotalParameterCount = 0 ; | |
3118 | pSMB->TotalDataCount = 0; | |
3119 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3120 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3121 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3122 | pSMB->MaxSetupCount = 4; |
3123 | pSMB->Reserved = 0; | |
3124 | pSMB->ParameterOffset = 0; | |
3125 | pSMB->DataCount = 0; | |
3126 | pSMB->DataOffset = 0; | |
3127 | pSMB->SetupCount = 4; | |
3128 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3129 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3130 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3131 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3132 | pSMB->IsRootFlag = 0; | |
3133 | pSMB->Fid = fid; /* file handle always le */ | |
3134 | pSMB->ByteCount = 0; | |
3135 | ||
3136 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3137 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3138 | if (rc) { | |
f96637be | 3139 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3140 | goto qreparse_out; |
3141 | } | |
3142 | ||
3143 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3144 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3145 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3146 | /* BB also check enough total bytes returned */ | |
3147 | rc = -EIO; /* bad smb */ | |
3148 | goto qreparse_out; | |
3149 | } | |
3150 | if (!data_count || (data_count > 2048)) { | |
3151 | rc = -EIO; | |
3152 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3153 | goto qreparse_out; | |
3154 | } | |
3155 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3156 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3157 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3158 | if ((char *)reparse_buf >= end_of_smb) { | |
3159 | rc = -EIO; | |
3160 | goto qreparse_out; | |
1da177e4 | 3161 | } |
c31f3307 SF |
3162 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3163 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3164 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3165 | ||
3166 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3167 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3168 | le64_to_cpu(posix_buf->InodeType)); | |
3169 | rc = -EOPNOTSUPP; | |
3170 | goto qreparse_out; | |
3171 | } | |
3172 | is_unicode = true; | |
3173 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3174 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3175 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3176 | rc = -EIO; | |
3177 | goto qreparse_out; | |
3178 | } | |
3179 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3180 | sub_len, is_unicode, nls_codepage); | |
3181 | goto qreparse_out; | |
3182 | } else if (reparse_buf->ReparseTag != | |
3183 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3184 | rc = -EOPNOTSUPP; | |
3185 | goto qreparse_out; | |
3186 | } | |
3187 | ||
3188 | /* Reparse tag is NTFS symlink */ | |
3189 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3190 | reparse_buf->PathBuffer; | |
3191 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3192 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3193 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3194 | rc = -EIO; | |
3195 | goto qreparse_out; | |
3196 | } | |
d244bf2d PS |
3197 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3198 | is_unicode = true; | |
3199 | else | |
3200 | is_unicode = false; | |
989c7e51 | 3201 | |
d244bf2d PS |
3202 | /* BB FIXME investigate remapping reserved chars here */ |
3203 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3204 | nls_codepage); | |
3205 | if (!*symlinkinfo) | |
3206 | rc = -ENOMEM; | |
1da177e4 | 3207 | qreparse_out: |
4a6d87f1 | 3208 | cifs_buf_release(pSMB); |
1da177e4 | 3209 | |
d244bf2d PS |
3210 | /* |
3211 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3212 | * since file handle passed in no longer valid. | |
3213 | */ | |
1da177e4 LT |
3214 | return rc; |
3215 | } | |
3216 | ||
c7f508a9 SF |
3217 | int |
3218 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3219 | __u16 fid) | |
3220 | { | |
3221 | int rc = 0; | |
3222 | int bytes_returned; | |
3223 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3224 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3225 | ||
3226 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3227 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3228 | (void **) &pSMBr); | |
3229 | if (rc) | |
3230 | return rc; | |
3231 | ||
3232 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3233 | ||
3234 | pSMB->TotalParameterCount = 0; | |
3235 | pSMB->TotalDataCount = __constant_cpu_to_le32(2); | |
3236 | pSMB->MaxParameterCount = 0; | |
3237 | pSMB->MaxDataCount = 0; | |
3238 | pSMB->MaxSetupCount = 4; | |
3239 | pSMB->Reserved = 0; | |
3240 | pSMB->ParameterOffset = 0; | |
3241 | pSMB->DataCount = __constant_cpu_to_le32(2); | |
3242 | pSMB->DataOffset = | |
3243 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3244 | compression_state) - 4); /* 84 */ | |
3245 | pSMB->SetupCount = 4; | |
3246 | pSMB->SubCommand = __constant_cpu_to_le16(NT_TRANSACT_IOCTL); | |
3247 | pSMB->ParameterCount = 0; | |
3248 | pSMB->FunctionCode = __constant_cpu_to_le32(FSCTL_SET_COMPRESSION); | |
3249 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3250 | pSMB->IsRootFlag = 0; | |
3251 | pSMB->Fid = fid; /* file handle always le */ | |
3252 | /* 3 byte pad, followed by 2 byte compress state */ | |
3253 | pSMB->ByteCount = __constant_cpu_to_le16(5); | |
3254 | inc_rfc1001_len(pSMB, 5); | |
3255 | ||
3256 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3257 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3258 | if (rc) | |
3259 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3260 | ||
3261 | cifs_buf_release(pSMB); | |
3262 | ||
3263 | /* | |
3264 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3265 | * since file handle passed in no longer valid. | |
3266 | */ | |
3267 | return rc; | |
3268 | } | |
3269 | ||
3270 | ||
1da177e4 LT |
3271 | #ifdef CONFIG_CIFS_POSIX |
3272 | ||
3273 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3274 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3275 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3276 | { |
3277 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3278 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3279 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3280 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3281 | /* |
3282 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3283 | ace->e_perm, ace->e_tag, ace->e_id); | |
3284 | */ | |
1da177e4 LT |
3285 | |
3286 | return; | |
3287 | } | |
3288 | ||
3289 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3290 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3291 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3292 | { |
3293 | int size = 0; | |
3294 | int i; | |
3295 | __u16 count; | |
50c2f753 SF |
3296 | struct cifs_posix_ace *pACE; |
3297 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3298 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3299 | |
3300 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3301 | return -EOPNOTSUPP; | |
3302 | ||
790fe579 | 3303 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3304 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3305 | pACE = &cifs_acl->ace_array[0]; | |
3306 | size = sizeof(struct cifs_posix_acl); | |
3307 | size += sizeof(struct cifs_posix_ace) * count; | |
3308 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3309 | if (size_of_data_area < size) { |
f96637be JP |
3310 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3311 | size_of_data_area, size); | |
1da177e4 LT |
3312 | return -EINVAL; |
3313 | } | |
790fe579 | 3314 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3315 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3316 | size = sizeof(struct cifs_posix_acl); | |
3317 | size += sizeof(struct cifs_posix_ace) * count; | |
3318 | /* skip past access ACEs to get to default ACEs */ | |
3319 | pACE = &cifs_acl->ace_array[count]; | |
3320 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3321 | size += sizeof(struct cifs_posix_ace) * count; | |
3322 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3323 | if (size_of_data_area < size) |
1da177e4 LT |
3324 | return -EINVAL; |
3325 | } else { | |
3326 | /* illegal type */ | |
3327 | return -EINVAL; | |
3328 | } | |
3329 | ||
3330 | size = posix_acl_xattr_size(count); | |
790fe579 | 3331 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3332 | /* used to query ACL EA size */ |
790fe579 | 3333 | } else if (size > buflen) { |
1da177e4 LT |
3334 | return -ERANGE; |
3335 | } else /* buffer big enough */ { | |
ff7feac9 | 3336 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3337 | for (i = 0; i < count ; i++) { |
3338 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3339 | pACE++; | |
1da177e4 LT |
3340 | } |
3341 | } | |
3342 | return size; | |
3343 | } | |
3344 | ||
50c2f753 SF |
3345 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3346 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3347 | { |
3348 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3349 | ||
ff7feac9 SF |
3350 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3351 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3352 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3353 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3354 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3355 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3356 | } else |
ff7feac9 | 3357 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3358 | /* |
3359 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3360 | ace->e_perm, ace->e_tag, ace->e_id); | |
3361 | */ | |
1da177e4 LT |
3362 | return rc; |
3363 | } | |
3364 | ||
3365 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3366 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3367 | const int buflen, const int acl_type) | |
1da177e4 LT |
3368 | { |
3369 | __u16 rc = 0; | |
50c2f753 SF |
3370 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3371 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3372 | int count; |
3373 | int i; | |
3374 | ||
790fe579 | 3375 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3376 | return 0; |
3377 | ||
3378 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3379 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3380 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3381 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3382 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3383 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3384 | return 0; |
3385 | } | |
3386 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3387 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3388 | cifs_acl->access_entry_count = cpu_to_le16(count); |
b1d93356 SF |
3389 | cifs_acl->default_entry_count = __constant_cpu_to_le16(0xFFFF); |
3390 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
ff7feac9 | 3391 | cifs_acl->default_entry_count = cpu_to_le16(count); |
b1d93356 SF |
3392 | cifs_acl->access_entry_count = __constant_cpu_to_le16(0xFFFF); |
3393 | } else { | |
f96637be | 3394 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3395 | return 0; |
3396 | } | |
50c2f753 | 3397 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3398 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3399 | &local_acl->a_entries[i]); | |
790fe579 | 3400 | if (rc != 0) { |
1da177e4 LT |
3401 | /* ACE not converted */ |
3402 | break; | |
3403 | } | |
3404 | } | |
790fe579 | 3405 | if (rc == 0) { |
1da177e4 LT |
3406 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3407 | rc += sizeof(struct cifs_posix_acl); | |
3408 | /* BB add check to make sure ACL does not overflow SMB */ | |
3409 | } | |
3410 | return rc; | |
3411 | } | |
3412 | ||
3413 | int | |
6d5786a3 | 3414 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3415 | const unsigned char *searchName, |
3416 | char *acl_inf, const int buflen, const int acl_type, | |
3417 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3418 | { |
3419 | /* SMB_QUERY_POSIX_ACL */ | |
3420 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3421 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3422 | int rc = 0; | |
3423 | int bytes_returned; | |
3424 | int name_len; | |
3425 | __u16 params, byte_count; | |
50c2f753 | 3426 | |
f96637be | 3427 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3428 | |
3429 | queryAclRetry: | |
3430 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3431 | (void **) &pSMBr); | |
3432 | if (rc) | |
3433 | return rc; | |
50c2f753 | 3434 | |
1da177e4 LT |
3435 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3436 | name_len = | |
acbbb76a SF |
3437 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3438 | searchName, PATH_MAX, nls_codepage, | |
3439 | remap); | |
1da177e4 LT |
3440 | name_len++; /* trailing null */ |
3441 | name_len *= 2; | |
3442 | pSMB->FileName[name_len] = 0; | |
3443 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3444 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3445 | name_len = strnlen(searchName, PATH_MAX); |
3446 | name_len++; /* trailing null */ | |
3447 | strncpy(pSMB->FileName, searchName, name_len); | |
3448 | } | |
3449 | ||
3450 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3451 | pSMB->TotalDataCount = 0; | |
3452 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3453 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3454 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3455 | pSMB->MaxSetupCount = 0; | |
3456 | pSMB->Reserved = 0; | |
3457 | pSMB->Flags = 0; | |
3458 | pSMB->Timeout = 0; | |
3459 | pSMB->Reserved2 = 0; | |
3460 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3461 | offsetof(struct smb_com_transaction2_qpi_req, |
3462 | InformationLevel) - 4); | |
1da177e4 LT |
3463 | pSMB->DataCount = 0; |
3464 | pSMB->DataOffset = 0; | |
3465 | pSMB->SetupCount = 1; | |
3466 | pSMB->Reserved3 = 0; | |
3467 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3468 | byte_count = params + 1 /* pad */ ; | |
3469 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3470 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3471 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3472 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3473 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3474 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3475 | ||
3476 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3477 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3478 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3479 | if (rc) { |
f96637be | 3480 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3481 | } else { |
3482 | /* decode response */ | |
50c2f753 | 3483 | |
1da177e4 | 3484 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3485 | /* BB also check enough total bytes returned */ |
820a803f | 3486 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3487 | rc = -EIO; /* bad smb */ |
3488 | else { | |
3489 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3490 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3491 | rc = cifs_copy_posix_acl(acl_inf, | |
3492 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3493 | buflen, acl_type, count); |
1da177e4 LT |
3494 | } |
3495 | } | |
3496 | cifs_buf_release(pSMB); | |
3497 | if (rc == -EAGAIN) | |
3498 | goto queryAclRetry; | |
3499 | return rc; | |
3500 | } | |
3501 | ||
3502 | int | |
6d5786a3 | 3503 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3504 | const unsigned char *fileName, |
3505 | const char *local_acl, const int buflen, | |
3506 | const int acl_type, | |
3507 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3508 | { |
3509 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3510 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3511 | char *parm_data; | |
3512 | int name_len; | |
3513 | int rc = 0; | |
3514 | int bytes_returned = 0; | |
3515 | __u16 params, byte_count, data_count, param_offset, offset; | |
3516 | ||
f96637be | 3517 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3518 | setAclRetry: |
3519 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3520 | (void **) &pSMBr); |
1da177e4 LT |
3521 | if (rc) |
3522 | return rc; | |
3523 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3524 | name_len = | |
acbbb76a SF |
3525 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3526 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3527 | name_len++; /* trailing null */ |
3528 | name_len *= 2; | |
50c2f753 | 3529 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3530 | name_len = strnlen(fileName, PATH_MAX); |
3531 | name_len++; /* trailing null */ | |
3532 | strncpy(pSMB->FileName, fileName, name_len); | |
3533 | } | |
3534 | params = 6 + name_len; | |
3535 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3536 | /* BB find max SMB size from sess */ |
3537 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3538 | pSMB->MaxSetupCount = 0; |
3539 | pSMB->Reserved = 0; | |
3540 | pSMB->Flags = 0; | |
3541 | pSMB->Timeout = 0; | |
3542 | pSMB->Reserved2 = 0; | |
3543 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3544 | InformationLevel) - 4; |
1da177e4 LT |
3545 | offset = param_offset + params; |
3546 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3547 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3548 | ||
3549 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3550 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3551 | |
790fe579 | 3552 | if (data_count == 0) { |
1da177e4 LT |
3553 | rc = -EOPNOTSUPP; |
3554 | goto setACLerrorExit; | |
3555 | } | |
3556 | pSMB->DataOffset = cpu_to_le16(offset); | |
3557 | pSMB->SetupCount = 1; | |
3558 | pSMB->Reserved3 = 0; | |
3559 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3560 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3561 | byte_count = 3 /* pad */ + params + data_count; | |
3562 | pSMB->DataCount = cpu_to_le16(data_count); | |
3563 | pSMB->TotalDataCount = pSMB->DataCount; | |
3564 | pSMB->ParameterCount = cpu_to_le16(params); | |
3565 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3566 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3567 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3568 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3569 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3570 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3571 | if (rc) |
f96637be | 3572 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3573 | |
3574 | setACLerrorExit: | |
3575 | cifs_buf_release(pSMB); | |
3576 | if (rc == -EAGAIN) | |
3577 | goto setAclRetry; | |
3578 | return rc; | |
3579 | } | |
3580 | ||
f654bac2 SF |
3581 | /* BB fix tabs in this function FIXME BB */ |
3582 | int | |
6d5786a3 | 3583 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3584 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3585 | { |
50c2f753 SF |
3586 | int rc = 0; |
3587 | struct smb_t2_qfi_req *pSMB = NULL; | |
3588 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3589 | int bytes_returned; | |
3590 | __u16 params, byte_count; | |
f654bac2 | 3591 | |
f96637be | 3592 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3593 | if (tcon == NULL) |
3594 | return -ENODEV; | |
f654bac2 SF |
3595 | |
3596 | GetExtAttrRetry: | |
790fe579 SF |
3597 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3598 | (void **) &pSMBr); | |
3599 | if (rc) | |
3600 | return rc; | |
f654bac2 | 3601 | |
ad7a2926 | 3602 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3603 | pSMB->t2.TotalDataCount = 0; |
3604 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3605 | /* BB find exact max data count below from sess structure BB */ | |
3606 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3607 | pSMB->t2.MaxSetupCount = 0; | |
3608 | pSMB->t2.Reserved = 0; | |
3609 | pSMB->t2.Flags = 0; | |
3610 | pSMB->t2.Timeout = 0; | |
3611 | pSMB->t2.Reserved2 = 0; | |
3612 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3613 | Fid) - 4); | |
3614 | pSMB->t2.DataCount = 0; | |
3615 | pSMB->t2.DataOffset = 0; | |
3616 | pSMB->t2.SetupCount = 1; | |
3617 | pSMB->t2.Reserved3 = 0; | |
3618 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3619 | byte_count = params + 1 /* pad */ ; | |
3620 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3621 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3622 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3623 | pSMB->Pad = 0; | |
f654bac2 | 3624 | pSMB->Fid = netfid; |
be8e3b00 | 3625 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3626 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3627 | ||
3628 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3629 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3630 | if (rc) { | |
f96637be | 3631 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3632 | } else { |
3633 | /* decode response */ | |
3634 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3635 | /* BB also check enough total bytes returned */ |
820a803f | 3636 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3637 | /* If rc should we check for EOPNOSUPP and |
3638 | disable the srvino flag? or in caller? */ | |
3639 | rc = -EIO; /* bad smb */ | |
3640 | else { | |
3641 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3642 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3643 | struct file_chattr_info *pfinfo; | |
3644 | /* BB Do we need a cast or hash here ? */ | |
3645 | if (count != 16) { | |
f96637be | 3646 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3647 | rc = -EIO; |
3648 | goto GetExtAttrOut; | |
3649 | } | |
3650 | pfinfo = (struct file_chattr_info *) | |
3651 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3652 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3653 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3654 | } |
3655 | } | |
f654bac2 | 3656 | GetExtAttrOut: |
790fe579 SF |
3657 | cifs_buf_release(pSMB); |
3658 | if (rc == -EAGAIN) | |
3659 | goto GetExtAttrRetry; | |
3660 | return rc; | |
f654bac2 SF |
3661 | } |
3662 | ||
f654bac2 | 3663 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3664 | |
79df1bae JL |
3665 | #ifdef CONFIG_CIFS_ACL |
3666 | /* | |
3667 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3668 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3669 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3670 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3671 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3672 | * by caller | |
3673 | */ | |
3674 | static int | |
3675 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3676 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3677 | void **ret_buf) |
3678 | { | |
3679 | int rc; | |
3680 | __u32 temp_offset; | |
3681 | struct smb_com_ntransact_req *pSMB; | |
3682 | ||
3683 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3684 | (void **)&pSMB); | |
3685 | if (rc) | |
3686 | return rc; | |
3687 | *ret_buf = (void *)pSMB; | |
3688 | pSMB->Reserved = 0; | |
3689 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3690 | pSMB->TotalDataCount = 0; | |
c974befa | 3691 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3692 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3693 | pSMB->DataCount = pSMB->TotalDataCount; | |
3694 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3695 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3696 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3697 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3698 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3699 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3700 | return 0; | |
3701 | } | |
3702 | ||
3703 | static int | |
3704 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3705 | __u32 *pparmlen, __u32 *pdatalen) | |
3706 | { | |
3707 | char *end_of_smb; | |
3708 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3709 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3710 | u16 bcc; |
79df1bae JL |
3711 | |
3712 | *pdatalen = 0; | |
3713 | *pparmlen = 0; | |
3714 | ||
3715 | if (buf == NULL) | |
3716 | return -EINVAL; | |
3717 | ||
3718 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3719 | ||
820a803f JL |
3720 | bcc = get_bcc(&pSMBr->hdr); |
3721 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3722 | (char *)&pSMBr->ByteCount; |
3723 | ||
3724 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3725 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3726 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3727 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3728 | ||
3729 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3730 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3731 | ||
3732 | /* should we also check that parm and data areas do not overlap? */ | |
3733 | if (*ppparm > end_of_smb) { | |
f96637be | 3734 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3735 | return -EINVAL; |
3736 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3737 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3738 | return -EINVAL; |
3739 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3740 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3741 | return -EINVAL; |
3742 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3743 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3744 | *ppdata, data_count, (data_count + *ppdata), | |
3745 | end_of_smb, pSMBr); | |
79df1bae | 3746 | return -EINVAL; |
820a803f | 3747 | } else if (parm_count + data_count > bcc) { |
f96637be | 3748 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3749 | return -EINVAL; |
3750 | } | |
3751 | *pdatalen = data_count; | |
3752 | *pparmlen = parm_count; | |
3753 | return 0; | |
3754 | } | |
3755 | ||
0a4b92c0 SF |
3756 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3757 | int | |
6d5786a3 | 3758 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3759 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3760 | { |
3761 | int rc = 0; | |
3762 | int buf_type = 0; | |
ad7a2926 | 3763 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3764 | struct kvec iov[1]; |
3765 | ||
f96637be | 3766 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3767 | |
630f3f0c SF |
3768 | *pbuflen = 0; |
3769 | *acl_inf = NULL; | |
3770 | ||
b9c7a2bb | 3771 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3772 | 8 /* parm len */, tcon, (void **) &pSMB); |
3773 | if (rc) | |
3774 | return rc; | |
3775 | ||
3776 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3777 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3778 | pSMB->MaxSetupCount = 0; | |
3779 | pSMB->Fid = fid; /* file handle always le */ | |
3780 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3781 | CIFS_ACL_DACL); | |
3782 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3783 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3784 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3785 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3786 | |
a761ac57 | 3787 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3788 | 0); |
44c58186 | 3789 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3790 | if (rc) { |
f96637be | 3791 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3792 | } else { /* decode response */ |
ad7a2926 | 3793 | __le32 *parm; |
630f3f0c SF |
3794 | __u32 parm_len; |
3795 | __u32 acl_len; | |
50c2f753 | 3796 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3797 | char *pdata; |
0a4b92c0 SF |
3798 | |
3799 | /* validate_nttransact */ | |
50c2f753 | 3800 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3801 | &pdata, &parm_len, pbuflen); |
790fe579 | 3802 | if (rc) |
0a4b92c0 SF |
3803 | goto qsec_out; |
3804 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3805 | ||
f96637be JP |
3806 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3807 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3808 | |
3809 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3810 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3811 | *pbuflen = 0; |
0a4b92c0 SF |
3812 | goto qsec_out; |
3813 | } | |
3814 | ||
3815 | /* BB check that data area is minimum length and as big as acl_len */ | |
3816 | ||
af6f4612 | 3817 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3818 | if (acl_len != *pbuflen) { |
f96637be JP |
3819 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3820 | acl_len, *pbuflen); | |
630f3f0c SF |
3821 | if (*pbuflen > acl_len) |
3822 | *pbuflen = acl_len; | |
3823 | } | |
0a4b92c0 | 3824 | |
630f3f0c SF |
3825 | /* check if buffer is big enough for the acl |
3826 | header followed by the smallest SID */ | |
3827 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3828 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3829 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3830 | rc = -EINVAL; |
3831 | *pbuflen = 0; | |
3832 | } else { | |
f7f7c185 | 3833 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3834 | if (*acl_inf == NULL) { |
3835 | *pbuflen = 0; | |
3836 | rc = -ENOMEM; | |
3837 | } | |
630f3f0c | 3838 | } |
0a4b92c0 SF |
3839 | } |
3840 | qsec_out: | |
790fe579 | 3841 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3842 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3843 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3844 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3845 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3846 | return rc; |
3847 | } | |
97837582 SF |
3848 | |
3849 | int | |
6d5786a3 | 3850 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3851 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3852 | { |
3853 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3854 | int rc = 0; | |
3855 | int bytes_returned = 0; | |
3856 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3857 | void *pSMBr; |
97837582 SF |
3858 | |
3859 | setCifsAclRetry: | |
b2a3ad9c | 3860 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3861 | if (rc) |
b2a3ad9c | 3862 | return rc; |
97837582 SF |
3863 | |
3864 | pSMB->MaxSetupCount = 0; | |
3865 | pSMB->Reserved = 0; | |
3866 | ||
3867 | param_count = 8; | |
3868 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3869 | data_count = acllen; | |
3870 | data_offset = param_offset + param_count; | |
3871 | byte_count = 3 /* pad */ + param_count; | |
3872 | ||
3873 | pSMB->DataCount = cpu_to_le32(data_count); | |
3874 | pSMB->TotalDataCount = pSMB->DataCount; | |
3875 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3876 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3877 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3878 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3879 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3880 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3881 | pSMB->SetupCount = 0; | |
3882 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3883 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3884 | ||
3885 | pSMB->Fid = fid; /* file handle always le */ | |
3886 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3887 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3888 | |
3889 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3890 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3891 | data_offset, pntsd, acllen); | |
be8e3b00 | 3892 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3893 | } else |
be8e3b00 | 3894 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3895 | |
3896 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3897 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3898 | ||
f96637be JP |
3899 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3900 | bytes_returned, rc); | |
97837582 | 3901 | if (rc) |
f96637be | 3902 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3903 | cifs_buf_release(pSMB); |
3904 | ||
3905 | if (rc == -EAGAIN) | |
3906 | goto setCifsAclRetry; | |
3907 | ||
3908 | return (rc); | |
3909 | } | |
3910 | ||
79df1bae | 3911 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3912 | |
6b8edfe0 SF |
3913 | /* Legacy Query Path Information call for lookup to old servers such |
3914 | as Win9x/WinME */ | |
68889f26 PS |
3915 | int |
3916 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3917 | const char *search_name, FILE_ALL_INFO *data, | |
3918 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3919 | { |
ad7a2926 SF |
3920 | QUERY_INFORMATION_REQ *pSMB; |
3921 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3922 | int rc = 0; |
3923 | int bytes_returned; | |
3924 | int name_len; | |
3925 | ||
f96637be | 3926 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3927 | QInfRetry: |
3928 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3929 | (void **) &pSMBr); |
6b8edfe0 SF |
3930 | if (rc) |
3931 | return rc; | |
3932 | ||
3933 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3934 | name_len = | |
acbbb76a | 3935 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3936 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3937 | remap); |
6b8edfe0 SF |
3938 | name_len++; /* trailing null */ |
3939 | name_len *= 2; | |
50c2f753 | 3940 | } else { |
68889f26 | 3941 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3942 | name_len++; /* trailing null */ |
68889f26 | 3943 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3944 | } |
3945 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3946 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3947 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3948 | pSMB->ByteCount = cpu_to_le16(name_len); |
3949 | ||
3950 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3951 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3952 | if (rc) { |
f96637be | 3953 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3954 | } else if (data) { |
1bd5bbcb SF |
3955 | struct timespec ts; |
3956 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3957 | |
3958 | /* decode response */ | |
1bd5bbcb | 3959 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3960 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3961 | ts.tv_nsec = 0; |
3962 | ts.tv_sec = time; | |
3963 | /* decode time fields */ | |
68889f26 PS |
3964 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3965 | data->LastWriteTime = data->ChangeTime; | |
3966 | data->LastAccessTime = 0; | |
3967 | data->AllocationSize = | |
70ca734a | 3968 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3969 | data->EndOfFile = data->AllocationSize; |
3970 | data->Attributes = | |
70ca734a | 3971 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3972 | } else |
3973 | rc = -EIO; /* bad buffer passed in */ | |
3974 | ||
3975 | cifs_buf_release(pSMB); | |
3976 | ||
3977 | if (rc == -EAGAIN) | |
3978 | goto QInfRetry; | |
3979 | ||
3980 | return rc; | |
3981 | } | |
3982 | ||
bcd5357f | 3983 | int |
6d5786a3 | 3984 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3985 | u16 netfid, FILE_ALL_INFO *pFindData) |
3986 | { | |
3987 | struct smb_t2_qfi_req *pSMB = NULL; | |
3988 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3989 | int rc = 0; | |
3990 | int bytes_returned; | |
3991 | __u16 params, byte_count; | |
3992 | ||
3993 | QFileInfoRetry: | |
3994 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3995 | (void **) &pSMBr); | |
3996 | if (rc) | |
3997 | return rc; | |
3998 | ||
3999 | params = 2 /* level */ + 2 /* fid */; | |
4000 | pSMB->t2.TotalDataCount = 0; | |
4001 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4002 | /* BB find exact max data count below from sess structure BB */ | |
4003 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4004 | pSMB->t2.MaxSetupCount = 0; | |
4005 | pSMB->t2.Reserved = 0; | |
4006 | pSMB->t2.Flags = 0; | |
4007 | pSMB->t2.Timeout = 0; | |
4008 | pSMB->t2.Reserved2 = 0; | |
4009 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4010 | Fid) - 4); | |
4011 | pSMB->t2.DataCount = 0; | |
4012 | pSMB->t2.DataOffset = 0; | |
4013 | pSMB->t2.SetupCount = 1; | |
4014 | pSMB->t2.Reserved3 = 0; | |
4015 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4016 | byte_count = params + 1 /* pad */ ; | |
4017 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4018 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4019 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4020 | pSMB->Pad = 0; | |
4021 | pSMB->Fid = netfid; | |
be8e3b00 | 4022 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4023 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4024 | |
bcd5357f JL |
4025 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4026 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4027 | if (rc) { | |
ebcc943c | 4028 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4029 | } else { /* decode response */ |
4030 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4031 | |
bcd5357f JL |
4032 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4033 | rc = -EIO; | |
820a803f | 4034 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4035 | rc = -EIO; /* bad smb */ |
4036 | else if (pFindData) { | |
4037 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4038 | memcpy((char *) pFindData, | |
4039 | (char *) &pSMBr->hdr.Protocol + | |
4040 | data_offset, sizeof(FILE_ALL_INFO)); | |
4041 | } else | |
4042 | rc = -ENOMEM; | |
4043 | } | |
4044 | cifs_buf_release(pSMB); | |
4045 | if (rc == -EAGAIN) | |
4046 | goto QFileInfoRetry; | |
6b8edfe0 | 4047 | |
bcd5357f JL |
4048 | return rc; |
4049 | } | |
6b8edfe0 | 4050 | |
1da177e4 | 4051 | int |
6d5786a3 | 4052 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4053 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4054 | int legacy /* old style infolevel */, |
737b758c | 4055 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4056 | { |
68889f26 | 4057 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4058 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4059 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4060 | int rc = 0; | |
4061 | int bytes_returned; | |
4062 | int name_len; | |
4063 | __u16 params, byte_count; | |
4064 | ||
f96637be | 4065 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4066 | QPathInfoRetry: |
4067 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4068 | (void **) &pSMBr); | |
4069 | if (rc) | |
4070 | return rc; | |
4071 | ||
4072 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4073 | name_len = | |
68889f26 | 4074 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4075 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4076 | name_len++; /* trailing null */ |
4077 | name_len *= 2; | |
50c2f753 | 4078 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4079 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4080 | name_len++; /* trailing null */ |
68889f26 | 4081 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4082 | } |
4083 | ||
50c2f753 | 4084 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4085 | pSMB->TotalDataCount = 0; |
4086 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4087 | /* BB find exact max SMB PDU from sess structure BB */ |
4088 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4089 | pSMB->MaxSetupCount = 0; |
4090 | pSMB->Reserved = 0; | |
4091 | pSMB->Flags = 0; | |
4092 | pSMB->Timeout = 0; | |
4093 | pSMB->Reserved2 = 0; | |
4094 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4095 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4096 | pSMB->DataCount = 0; |
4097 | pSMB->DataOffset = 0; | |
4098 | pSMB->SetupCount = 1; | |
4099 | pSMB->Reserved3 = 0; | |
4100 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4101 | byte_count = params + 1 /* pad */ ; | |
4102 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4103 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4104 | if (legacy) |
acf1a1b1 SF |
4105 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4106 | else | |
4107 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4108 | pSMB->Reserved4 = 0; |
be8e3b00 | 4109 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4110 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4111 | ||
4112 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4113 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4114 | if (rc) { | |
f96637be | 4115 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4116 | } else { /* decode response */ |
4117 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4118 | ||
acf1a1b1 SF |
4119 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4120 | rc = -EIO; | |
820a803f | 4121 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4122 | rc = -EIO; /* bad smb */ |
820a803f | 4123 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4124 | rc = -EIO; /* 24 or 26 expected but we do not read |
4125 | last field */ | |
68889f26 | 4126 | else if (data) { |
acf1a1b1 | 4127 | int size; |
1da177e4 | 4128 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4129 | |
68889f26 PS |
4130 | /* |
4131 | * On legacy responses we do not read the last field, | |
4132 | * EAsize, fortunately since it varies by subdialect and | |
4133 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4134 | * bytes depending but we don't care here. | |
4135 | */ | |
ad7a2926 | 4136 | if (legacy) |
acf1a1b1 SF |
4137 | size = sizeof(FILE_INFO_STANDARD); |
4138 | else | |
4139 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4140 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4141 | data_offset, size); |
1da177e4 LT |
4142 | } else |
4143 | rc = -ENOMEM; | |
4144 | } | |
4145 | cifs_buf_release(pSMB); | |
4146 | if (rc == -EAGAIN) | |
4147 | goto QPathInfoRetry; | |
4148 | ||
4149 | return rc; | |
4150 | } | |
4151 | ||
c8634fd3 | 4152 | int |
6d5786a3 | 4153 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4154 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4155 | { | |
4156 | struct smb_t2_qfi_req *pSMB = NULL; | |
4157 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4158 | int rc = 0; | |
4159 | int bytes_returned; | |
4160 | __u16 params, byte_count; | |
4161 | ||
4162 | UnixQFileInfoRetry: | |
4163 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4164 | (void **) &pSMBr); | |
4165 | if (rc) | |
4166 | return rc; | |
4167 | ||
4168 | params = 2 /* level */ + 2 /* fid */; | |
4169 | pSMB->t2.TotalDataCount = 0; | |
4170 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4171 | /* BB find exact max data count below from sess structure BB */ | |
4172 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4173 | pSMB->t2.MaxSetupCount = 0; | |
4174 | pSMB->t2.Reserved = 0; | |
4175 | pSMB->t2.Flags = 0; | |
4176 | pSMB->t2.Timeout = 0; | |
4177 | pSMB->t2.Reserved2 = 0; | |
4178 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4179 | Fid) - 4); | |
4180 | pSMB->t2.DataCount = 0; | |
4181 | pSMB->t2.DataOffset = 0; | |
4182 | pSMB->t2.SetupCount = 1; | |
4183 | pSMB->t2.Reserved3 = 0; | |
4184 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4185 | byte_count = params + 1 /* pad */ ; | |
4186 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4187 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4188 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4189 | pSMB->Pad = 0; | |
4190 | pSMB->Fid = netfid; | |
be8e3b00 | 4191 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4192 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4193 | |
4194 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4195 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4196 | if (rc) { | |
ebcc943c | 4197 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4198 | } else { /* decode response */ |
4199 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4200 | ||
820a803f | 4201 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4202 | 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 |
4203 | rc = -EIO; /* bad smb */ |
4204 | } else { | |
4205 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4206 | memcpy((char *) pFindData, | |
4207 | (char *) &pSMBr->hdr.Protocol + | |
4208 | data_offset, | |
4209 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4210 | } | |
4211 | } | |
4212 | ||
4213 | cifs_buf_release(pSMB); | |
4214 | if (rc == -EAGAIN) | |
4215 | goto UnixQFileInfoRetry; | |
4216 | ||
4217 | return rc; | |
4218 | } | |
4219 | ||
1da177e4 | 4220 | int |
6d5786a3 | 4221 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4222 | const unsigned char *searchName, |
582d21e5 | 4223 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4224 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4225 | { |
4226 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4227 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4228 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4229 | int rc = 0; | |
4230 | int bytes_returned = 0; | |
4231 | int name_len; | |
4232 | __u16 params, byte_count; | |
4233 | ||
f96637be | 4234 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4235 | UnixQPathInfoRetry: |
4236 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4237 | (void **) &pSMBr); | |
4238 | if (rc) | |
4239 | return rc; | |
4240 | ||
4241 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4242 | name_len = | |
acbbb76a SF |
4243 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4244 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4245 | name_len++; /* trailing null */ |
4246 | name_len *= 2; | |
50c2f753 | 4247 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4248 | name_len = strnlen(searchName, PATH_MAX); |
4249 | name_len++; /* trailing null */ | |
4250 | strncpy(pSMB->FileName, searchName, name_len); | |
4251 | } | |
4252 | ||
50c2f753 | 4253 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4254 | pSMB->TotalDataCount = 0; |
4255 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4256 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4257 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4258 | pSMB->MaxSetupCount = 0; |
4259 | pSMB->Reserved = 0; | |
4260 | pSMB->Flags = 0; | |
4261 | pSMB->Timeout = 0; | |
4262 | pSMB->Reserved2 = 0; | |
4263 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4264 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4265 | pSMB->DataCount = 0; |
4266 | pSMB->DataOffset = 0; | |
4267 | pSMB->SetupCount = 1; | |
4268 | pSMB->Reserved3 = 0; | |
4269 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4270 | byte_count = params + 1 /* pad */ ; | |
4271 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4272 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4273 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4274 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4275 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4276 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4277 | ||
4278 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4279 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4280 | if (rc) { | |
ebcc943c | 4281 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4282 | } else { /* decode response */ |
4283 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4284 | ||
820a803f | 4285 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4286 | 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 |
4287 | rc = -EIO; /* bad smb */ |
4288 | } else { | |
4289 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4290 | memcpy((char *) pFindData, | |
4291 | (char *) &pSMBr->hdr.Protocol + | |
4292 | data_offset, | |
630f3f0c | 4293 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4294 | } |
4295 | } | |
4296 | cifs_buf_release(pSMB); | |
4297 | if (rc == -EAGAIN) | |
4298 | goto UnixQPathInfoRetry; | |
4299 | ||
4300 | return rc; | |
4301 | } | |
4302 | ||
1da177e4 LT |
4303 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4304 | int | |
6d5786a3 | 4305 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4306 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4307 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4308 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4309 | { |
4310 | /* level 257 SMB_ */ | |
4311 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4312 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4313 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4314 | int rc = 0; |
4315 | int bytes_returned = 0; | |
c052e2b4 | 4316 | int name_len, remap; |
1da177e4 | 4317 | __u16 params, byte_count; |
c052e2b4 | 4318 | struct nls_table *nls_codepage; |
1da177e4 | 4319 | |
f96637be | 4320 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4321 | |
4322 | findFirstRetry: | |
4323 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4324 | (void **) &pSMBr); | |
4325 | if (rc) | |
4326 | return rc; | |
4327 | ||
c052e2b4 SP |
4328 | nls_codepage = cifs_sb->local_nls; |
4329 | remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; | |
4330 | ||
1da177e4 LT |
4331 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4332 | name_len = | |
acbbb76a SF |
4333 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4334 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4335 | /* We can not add the asterik earlier in case |
4336 | it got remapped to 0xF03A as if it were part of the | |
4337 | directory name instead of a wildcard */ | |
1da177e4 | 4338 | name_len *= 2; |
c052e2b4 SP |
4339 | if (msearch) { |
4340 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4341 | pSMB->FileName[name_len+1] = 0; | |
4342 | pSMB->FileName[name_len+2] = '*'; | |
4343 | pSMB->FileName[name_len+3] = 0; | |
4344 | name_len += 4; /* now the trailing null */ | |
4345 | /* null terminate just in case */ | |
4346 | pSMB->FileName[name_len] = 0; | |
4347 | pSMB->FileName[name_len+1] = 0; | |
4348 | name_len += 2; | |
4349 | } | |
1da177e4 LT |
4350 | } else { /* BB add check for overrun of SMB buf BB */ |
4351 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4352 | /* BB fix here and in unicode clause above ie |
790fe579 | 4353 | if (name_len > buffersize-header) |
1da177e4 LT |
4354 | free buffer exit; BB */ |
4355 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4356 | if (msearch) { |
4357 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4358 | pSMB->FileName[name_len+1] = '*'; | |
4359 | pSMB->FileName[name_len+2] = 0; | |
4360 | name_len += 3; | |
4361 | } | |
1da177e4 LT |
4362 | } |
4363 | ||
4364 | params = 12 + name_len /* includes null */ ; | |
4365 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4366 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4367 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4368 | pSMB->MaxSetupCount = 0; |
4369 | pSMB->Reserved = 0; | |
4370 | pSMB->Flags = 0; | |
4371 | pSMB->Timeout = 0; | |
4372 | pSMB->Reserved2 = 0; | |
4373 | byte_count = params + 1 /* pad */ ; | |
4374 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4375 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4376 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4377 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4378 | - 4); | |
1da177e4 LT |
4379 | pSMB->DataCount = 0; |
4380 | pSMB->DataOffset = 0; | |
4381 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4382 | pSMB->Reserved3 = 0; | |
4383 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4384 | pSMB->SearchAttributes = | |
4385 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4386 | ATTR_DIRECTORY); | |
50c2f753 | 4387 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4388 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4389 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4390 | ||
4391 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4392 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4393 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4394 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4395 | ||
4396 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4397 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4398 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4399 | |
88274815 SF |
4400 | if (rc) {/* BB add logic to retry regular search if Unix search |
4401 | rejected unexpectedly by server */ | |
1da177e4 | 4402 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4403 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4404 | |
88274815 | 4405 | cifs_buf_release(pSMB); |
1da177e4 LT |
4406 | |
4407 | /* BB eventually could optimize out free and realloc of buf */ | |
4408 | /* for this case */ | |
4409 | if (rc == -EAGAIN) | |
4410 | goto findFirstRetry; | |
4411 | } else { /* decode response */ | |
4412 | /* BB remember to free buffer if error BB */ | |
4413 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4414 | if (rc == 0) { |
b77d753c SF |
4415 | unsigned int lnoff; |
4416 | ||
1da177e4 | 4417 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4418 | psrch_inf->unicode = true; |
1da177e4 | 4419 | else |
4b18f2a9 | 4420 | psrch_inf->unicode = false; |
1da177e4 LT |
4421 | |
4422 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4423 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4424 | psrch_inf->srch_entries_start = |
4425 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4426 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4427 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4428 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4429 | ||
790fe579 | 4430 | if (parms->EndofSearch) |
4b18f2a9 | 4431 | psrch_inf->endOfSearch = true; |
1da177e4 | 4432 | else |
4b18f2a9 | 4433 | psrch_inf->endOfSearch = false; |
1da177e4 | 4434 | |
50c2f753 SF |
4435 | psrch_inf->entries_in_buffer = |
4436 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4437 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4438 | psrch_inf->entries_in_buffer; |
b77d753c | 4439 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4440 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4441 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4442 | psrch_inf->last_entry = NULL; |
4443 | return rc; | |
4444 | } | |
4445 | ||
0752f152 | 4446 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4447 | lnoff; |
4448 | ||
c052e2b4 SP |
4449 | if (pnetfid) |
4450 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4451 | } else { |
4452 | cifs_buf_release(pSMB); | |
4453 | } | |
4454 | } | |
4455 | ||
4456 | return rc; | |
4457 | } | |
4458 | ||
6d5786a3 PS |
4459 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4460 | __u16 searchHandle, __u16 search_flags, | |
4461 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4462 | { |
4463 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4464 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4465 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4466 | char *response_data; |
4467 | int rc = 0; | |
9438fabb JL |
4468 | int bytes_returned; |
4469 | unsigned int name_len; | |
1da177e4 LT |
4470 | __u16 params, byte_count; |
4471 | ||
f96637be | 4472 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4473 | |
4b18f2a9 | 4474 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4475 | return -ENOENT; |
4476 | ||
4477 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4478 | (void **) &pSMBr); | |
4479 | if (rc) | |
4480 | return rc; | |
4481 | ||
50c2f753 | 4482 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4483 | byte_count = 0; |
4484 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4485 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4486 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4487 | pSMB->MaxSetupCount = 0; |
4488 | pSMB->Reserved = 0; | |
4489 | pSMB->Flags = 0; | |
4490 | pSMB->Timeout = 0; | |
4491 | pSMB->Reserved2 = 0; | |
4492 | pSMB->ParameterOffset = cpu_to_le16( | |
4493 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4494 | pSMB->DataCount = 0; | |
4495 | pSMB->DataOffset = 0; | |
4496 | pSMB->SetupCount = 1; | |
4497 | pSMB->Reserved3 = 0; | |
4498 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4499 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4500 | pSMB->SearchCount = | |
630f3f0c | 4501 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4502 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4503 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4504 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4505 | |
4506 | name_len = psrch_inf->resume_name_len; | |
4507 | params += name_len; | |
790fe579 | 4508 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4509 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4510 | byte_count += name_len; | |
ef6724e3 SF |
4511 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4512 | pSMB->ResumeFileName[name_len] = 0; | |
4513 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4514 | } else { |
4515 | rc = -EINVAL; | |
4516 | goto FNext2_err_exit; | |
4517 | } | |
4518 | byte_count = params + 1 /* pad */ ; | |
4519 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4520 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4521 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4522 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4523 | |
1da177e4 LT |
4524 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4525 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4526 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4527 | if (rc) { |
4528 | if (rc == -EBADF) { | |
4b18f2a9 | 4529 | psrch_inf->endOfSearch = true; |
6353450a | 4530 | cifs_buf_release(pSMB); |
50c2f753 | 4531 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4532 | } else |
f96637be | 4533 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4534 | } else { /* decode response */ |
4535 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4536 | |
790fe579 | 4537 | if (rc == 0) { |
b77d753c SF |
4538 | unsigned int lnoff; |
4539 | ||
1da177e4 LT |
4540 | /* BB fixme add lock for file (srch_info) struct here */ |
4541 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4542 | psrch_inf->unicode = true; |
1da177e4 | 4543 | else |
4b18f2a9 | 4544 | psrch_inf->unicode = false; |
1da177e4 LT |
4545 | response_data = (char *) &pSMBr->hdr.Protocol + |
4546 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4547 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4548 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4549 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4550 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4551 | cifs_small_buf_release( |
4552 | psrch_inf->ntwrk_buf_start); | |
4553 | else | |
4554 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4555 | psrch_inf->srch_entries_start = response_data; |
4556 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4557 | psrch_inf->smallBuf = 0; |
790fe579 | 4558 | if (parms->EndofSearch) |
4b18f2a9 | 4559 | psrch_inf->endOfSearch = true; |
1da177e4 | 4560 | else |
4b18f2a9 | 4561 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4562 | psrch_inf->entries_in_buffer = |
4563 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4564 | psrch_inf->index_of_last_entry += |
4565 | psrch_inf->entries_in_buffer; | |
b77d753c | 4566 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4567 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4568 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4569 | psrch_inf->last_entry = NULL; |
4570 | return rc; | |
4571 | } else | |
4572 | psrch_inf->last_entry = | |
4573 | psrch_inf->srch_entries_start + lnoff; | |
4574 | ||
f96637be JP |
4575 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4576 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4577 | |
4578 | /* BB fixme add unlock here */ | |
4579 | } | |
4580 | ||
4581 | } | |
4582 | ||
4583 | /* BB On error, should we leave previous search buf (and count and | |
4584 | last entry fields) intact or free the previous one? */ | |
4585 | ||
4586 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4587 | since file handle passed in no longer valid */ | |
4588 | FNext2_err_exit: | |
4589 | if (rc != 0) | |
4590 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4591 | return rc; |
4592 | } | |
4593 | ||
4594 | int | |
6d5786a3 | 4595 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4596 | const __u16 searchHandle) |
1da177e4 LT |
4597 | { |
4598 | int rc = 0; | |
4599 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4600 | |
f96637be | 4601 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4602 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4603 | ||
4604 | /* no sense returning error if session restarted | |
4605 | as file handle has been closed */ | |
790fe579 | 4606 | if (rc == -EAGAIN) |
1da177e4 LT |
4607 | return 0; |
4608 | if (rc) | |
4609 | return rc; | |
4610 | ||
1da177e4 LT |
4611 | pSMB->FileID = searchHandle; |
4612 | pSMB->ByteCount = 0; | |
792af7b0 | 4613 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4614 | if (rc) |
f96637be | 4615 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4616 | |
44c58186 | 4617 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4618 | |
4619 | /* Since session is dead, search handle closed on server already */ | |
4620 | if (rc == -EAGAIN) | |
4621 | rc = 0; | |
4622 | ||
4623 | return rc; | |
4624 | } | |
4625 | ||
1da177e4 | 4626 | int |
6d5786a3 | 4627 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4628 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4629 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4630 | { |
4631 | int rc = 0; | |
4632 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4633 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4634 | int name_len, bytes_returned; | |
4635 | __u16 params, byte_count; | |
4636 | ||
f96637be | 4637 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4638 | if (tcon == NULL) |
50c2f753 | 4639 | return -ENODEV; |
1da177e4 LT |
4640 | |
4641 | GetInodeNumberRetry: | |
4642 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4643 | (void **) &pSMBr); |
1da177e4 LT |
4644 | if (rc) |
4645 | return rc; | |
4646 | ||
1da177e4 LT |
4647 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4648 | name_len = | |
acbbb76a | 4649 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4650 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4651 | remap); |
1da177e4 LT |
4652 | name_len++; /* trailing null */ |
4653 | name_len *= 2; | |
50c2f753 | 4654 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4655 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4656 | name_len++; /* trailing null */ |
1208ef1f | 4657 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4658 | } |
4659 | ||
4660 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4661 | pSMB->TotalDataCount = 0; | |
4662 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4663 | /* BB find exact max data count below from sess structure BB */ | |
4664 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4665 | pSMB->MaxSetupCount = 0; | |
4666 | pSMB->Reserved = 0; | |
4667 | pSMB->Flags = 0; | |
4668 | pSMB->Timeout = 0; | |
4669 | pSMB->Reserved2 = 0; | |
4670 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4671 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4672 | pSMB->DataCount = 0; |
4673 | pSMB->DataOffset = 0; | |
4674 | pSMB->SetupCount = 1; | |
4675 | pSMB->Reserved3 = 0; | |
4676 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4677 | byte_count = params + 1 /* pad */ ; | |
4678 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4679 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4680 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4681 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4682 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4683 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4684 | ||
4685 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4686 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4687 | if (rc) { | |
f96637be | 4688 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4689 | } else { |
4690 | /* decode response */ | |
4691 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4692 | /* BB also check enough total bytes returned */ |
820a803f | 4693 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4694 | /* If rc should we check for EOPNOSUPP and |
4695 | disable the srvino flag? or in caller? */ | |
4696 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4697 | else { |
1da177e4 LT |
4698 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4699 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4700 | struct file_internal_info *pfinfo; |
1da177e4 | 4701 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4702 | if (count < 8) { |
f96637be | 4703 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4704 | rc = -EIO; |
4705 | goto GetInodeNumOut; | |
4706 | } | |
4707 | pfinfo = (struct file_internal_info *) | |
4708 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4709 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4710 | } |
4711 | } | |
4712 | GetInodeNumOut: | |
4713 | cifs_buf_release(pSMB); | |
4714 | if (rc == -EAGAIN) | |
4715 | goto GetInodeNumberRetry; | |
4716 | return rc; | |
4717 | } | |
1da177e4 | 4718 | |
fec4585f IM |
4719 | /* parses DFS refferal V3 structure |
4720 | * caller is responsible for freeing target_nodes | |
4721 | * returns: | |
4722 | * on success - 0 | |
4723 | * on failure - errno | |
4724 | */ | |
4725 | static int | |
a1fe78f1 | 4726 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4727 | unsigned int *num_of_nodes, |
4728 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4729 | const struct nls_table *nls_codepage, int remap, |
4730 | const char *searchName) | |
fec4585f IM |
4731 | { |
4732 | int i, rc = 0; | |
4733 | char *data_end; | |
4734 | bool is_unicode; | |
4735 | struct dfs_referral_level_3 *ref; | |
4736 | ||
5ca33c6a HH |
4737 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4738 | is_unicode = true; | |
4739 | else | |
4740 | is_unicode = false; | |
fec4585f IM |
4741 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4742 | ||
4743 | if (*num_of_nodes < 1) { | |
f96637be JP |
4744 | cifs_dbg(VFS, "num_referrals: must be at least > 0, but we get num_referrals = %d\n", |
4745 | *num_of_nodes); | |
fec4585f | 4746 | rc = -EINVAL; |
a1fe78f1 | 4747 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4748 | } |
4749 | ||
4750 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4751 | if (ref->VersionNumber != cpu_to_le16(3)) { |
f96637be JP |
4752 | cifs_dbg(VFS, "Referrals of V%d version are not supported, should be V3\n", |
4753 | le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4754 | rc = -EINVAL; |
a1fe78f1 | 4755 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4756 | } |
4757 | ||
4758 | /* get the upper boundary of the resp buffer */ | |
4759 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4760 | le16_to_cpu(pSMBr->t2.DataCount); | |
4761 | ||
f96637be JP |
4762 | cifs_dbg(FYI, "num_referrals: %d dfs flags: 0x%x ...\n", |
4763 | *num_of_nodes, le32_to_cpu(pSMBr->DFSFlags)); | |
fec4585f | 4764 | |
f96637be JP |
4765 | *target_nodes = kcalloc(*num_of_nodes, sizeof(struct dfs_info3_param), |
4766 | GFP_KERNEL); | |
fec4585f | 4767 | if (*target_nodes == NULL) { |
fec4585f | 4768 | rc = -ENOMEM; |
a1fe78f1 | 4769 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4770 | } |
4771 | ||
3ad2f3fb | 4772 | /* collect necessary data from referrals */ |
fec4585f IM |
4773 | for (i = 0; i < *num_of_nodes; i++) { |
4774 | char *temp; | |
4775 | int max_len; | |
4776 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4777 | ||
0e0d2cf3 | 4778 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4779 | if (is_unicode) { |
331c3135 JL |
4780 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4781 | GFP_KERNEL); | |
2920ee2b SF |
4782 | if (tmp == NULL) { |
4783 | rc = -ENOMEM; | |
4784 | goto parse_DFS_referrals_exit; | |
4785 | } | |
acbbb76a SF |
4786 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4787 | PATH_MAX, nls_codepage, remap); | |
4788 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4789 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4790 | nls_codepage); |
4791 | kfree(tmp); | |
4792 | } else | |
4793 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4794 | ||
fec4585f IM |
4795 | node->server_type = le16_to_cpu(ref->ServerType); |
4796 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4797 | ||
4798 | /* copy DfsPath */ | |
4799 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4800 | max_len = data_end - temp; | |
acbbb76a SF |
4801 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4802 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4803 | if (!node->path_name) { |
4804 | rc = -ENOMEM; | |
a1fe78f1 | 4805 | goto parse_DFS_referrals_exit; |
066ce689 | 4806 | } |
fec4585f IM |
4807 | |
4808 | /* copy link target UNC */ | |
4809 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4810 | max_len = data_end - temp; | |
acbbb76a SF |
4811 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4812 | is_unicode, nls_codepage); | |
d8f2799b | 4813 | if (!node->node_name) { |
d8e2f53a | 4814 | rc = -ENOMEM; |
d8f2799b SM |
4815 | goto parse_DFS_referrals_exit; |
4816 | } | |
4817 | ||
4818 | ref++; | |
fec4585f IM |
4819 | } |
4820 | ||
a1fe78f1 | 4821 | parse_DFS_referrals_exit: |
fec4585f IM |
4822 | if (rc) { |
4823 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4824 | *target_nodes = NULL; | |
4825 | *num_of_nodes = 0; | |
4826 | } | |
4827 | return rc; | |
4828 | } | |
4829 | ||
1da177e4 | 4830 | int |
6d5786a3 | 4831 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4832 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4833 | unsigned int *num_of_nodes, |
737b758c | 4834 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4835 | { |
4836 | /* TRANS2_GET_DFS_REFERRAL */ | |
4837 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4838 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4839 | int rc = 0; |
4840 | int bytes_returned; | |
4841 | int name_len; | |
1da177e4 | 4842 | __u16 params, byte_count; |
c2cf07d5 SF |
4843 | *num_of_nodes = 0; |
4844 | *target_nodes = NULL; | |
1da177e4 | 4845 | |
f96637be | 4846 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4847 | if (ses == NULL) |
4848 | return -ENODEV; | |
4849 | getDFSRetry: | |
4850 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4851 | (void **) &pSMBr); | |
4852 | if (rc) | |
4853 | return rc; | |
50c2f753 SF |
4854 | |
4855 | /* server pointer checked in called function, | |
1982c344 | 4856 | but should never be null here anyway */ |
88257360 | 4857 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4858 | pSMB->hdr.Tid = ses->ipc_tid; |
4859 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4860 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4861 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4862 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4863 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4864 | |
4865 | if (ses->capabilities & CAP_UNICODE) { | |
4866 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4867 | name_len = | |
acbbb76a | 4868 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4869 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4870 | remap); |
1da177e4 LT |
4871 | name_len++; /* trailing null */ |
4872 | name_len *= 2; | |
50c2f753 | 4873 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4874 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4875 | name_len++; /* trailing null */ |
b669f33c | 4876 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4877 | } |
4878 | ||
38d77c50 JL |
4879 | if (ses->server && ses->server->sign) |
4880 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1a4e15a0 | 4881 | |
50c2f753 | 4882 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4883 | |
1da177e4 LT |
4884 | params = 2 /* level */ + name_len /*includes null */ ; |
4885 | pSMB->TotalDataCount = 0; | |
4886 | pSMB->DataCount = 0; | |
4887 | pSMB->DataOffset = 0; | |
4888 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4889 | /* BB find exact max SMB PDU from sess structure BB */ |
4890 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4891 | pSMB->MaxSetupCount = 0; |
4892 | pSMB->Reserved = 0; | |
4893 | pSMB->Flags = 0; | |
4894 | pSMB->Timeout = 0; | |
4895 | pSMB->Reserved2 = 0; | |
4896 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4897 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4898 | pSMB->SetupCount = 1; |
4899 | pSMB->Reserved3 = 0; | |
4900 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4901 | byte_count = params + 3 /* pad */ ; | |
4902 | pSMB->ParameterCount = cpu_to_le16(params); | |
4903 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4904 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4905 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4906 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4907 | ||
4908 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4909 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4910 | if (rc) { | |
f96637be | 4911 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4912 | goto GetDFSRefExit; |
4913 | } | |
4914 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4915 | |
c2cf07d5 | 4916 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4917 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4918 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4919 | goto GetDFSRefExit; |
4920 | } | |
c2cf07d5 | 4921 | |
f96637be JP |
4922 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4923 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4924 | |
fec4585f | 4925 | /* parse returned result into more usable form */ |
a1fe78f1 | 4926 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4927 | target_nodes, nls_codepage, remap, |
b669f33c | 4928 | search_name); |
c2cf07d5 | 4929 | |
1da177e4 | 4930 | GetDFSRefExit: |
0d817bc0 | 4931 | cifs_buf_release(pSMB); |
1da177e4 LT |
4932 | |
4933 | if (rc == -EAGAIN) | |
4934 | goto getDFSRetry; | |
4935 | ||
4936 | return rc; | |
4937 | } | |
4938 | ||
20962438 SF |
4939 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4940 | int | |
6d5786a3 PS |
4941 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4942 | struct kstatfs *FSData) | |
20962438 SF |
4943 | { |
4944 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4945 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4946 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4947 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4948 | int rc = 0; | |
4949 | int bytes_returned = 0; | |
4950 | __u16 params, byte_count; | |
4951 | ||
f96637be | 4952 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4953 | oldQFSInfoRetry: |
4954 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4955 | (void **) &pSMBr); | |
4956 | if (rc) | |
4957 | return rc; | |
20962438 SF |
4958 | |
4959 | params = 2; /* level */ | |
4960 | pSMB->TotalDataCount = 0; | |
4961 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4962 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4963 | pSMB->MaxSetupCount = 0; | |
4964 | pSMB->Reserved = 0; | |
4965 | pSMB->Flags = 0; | |
4966 | pSMB->Timeout = 0; | |
4967 | pSMB->Reserved2 = 0; | |
4968 | byte_count = params + 1 /* pad */ ; | |
4969 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4970 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4971 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4972 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4973 | pSMB->DataCount = 0; | |
4974 | pSMB->DataOffset = 0; | |
4975 | pSMB->SetupCount = 1; | |
4976 | pSMB->Reserved3 = 0; | |
4977 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4978 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4979 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4980 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4981 | ||
4982 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4983 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4984 | if (rc) { | |
f96637be | 4985 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4986 | } else { /* decode response */ |
4987 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4988 | ||
820a803f | 4989 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4990 | rc = -EIO; /* bad smb */ |
4991 | else { | |
4992 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4993 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4994 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4995 | |
50c2f753 | 4996 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4997 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4998 | FSData->f_bsize = | |
4999 | le16_to_cpu(response_data->BytesPerSector) * | |
5000 | le32_to_cpu(response_data-> | |
5001 | SectorsPerAllocationUnit); | |
5002 | FSData->f_blocks = | |
50c2f753 | 5003 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
5004 | FSData->f_bfree = FSData->f_bavail = |
5005 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5006 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5007 | (unsigned long long)FSData->f_blocks, | |
5008 | (unsigned long long)FSData->f_bfree, | |
5009 | FSData->f_bsize); | |
20962438 SF |
5010 | } |
5011 | } | |
5012 | cifs_buf_release(pSMB); | |
5013 | ||
5014 | if (rc == -EAGAIN) | |
5015 | goto oldQFSInfoRetry; | |
5016 | ||
5017 | return rc; | |
5018 | } | |
5019 | ||
1da177e4 | 5020 | int |
6d5786a3 PS |
5021 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5022 | struct kstatfs *FSData) | |
1da177e4 LT |
5023 | { |
5024 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5025 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5026 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5027 | FILE_SYSTEM_INFO *response_data; | |
5028 | int rc = 0; | |
5029 | int bytes_returned = 0; | |
5030 | __u16 params, byte_count; | |
5031 | ||
f96637be | 5032 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5033 | QFSInfoRetry: |
5034 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5035 | (void **) &pSMBr); | |
5036 | if (rc) | |
5037 | return rc; | |
5038 | ||
5039 | params = 2; /* level */ | |
5040 | pSMB->TotalDataCount = 0; | |
5041 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5042 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5043 | pSMB->MaxSetupCount = 0; |
5044 | pSMB->Reserved = 0; | |
5045 | pSMB->Flags = 0; | |
5046 | pSMB->Timeout = 0; | |
5047 | pSMB->Reserved2 = 0; | |
5048 | byte_count = params + 1 /* pad */ ; | |
5049 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5050 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5051 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5052 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5053 | pSMB->DataCount = 0; |
5054 | pSMB->DataOffset = 0; | |
5055 | pSMB->SetupCount = 1; | |
5056 | pSMB->Reserved3 = 0; | |
5057 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5058 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5059 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5060 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5061 | ||
5062 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5063 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5064 | if (rc) { | |
f96637be | 5065 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5066 | } else { /* decode response */ |
50c2f753 | 5067 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5068 | |
820a803f | 5069 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5070 | rc = -EIO; /* bad smb */ |
5071 | else { | |
5072 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5073 | |
5074 | response_data = | |
5075 | (FILE_SYSTEM_INFO | |
5076 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5077 | data_offset); | |
5078 | FSData->f_bsize = | |
5079 | le32_to_cpu(response_data->BytesPerSector) * | |
5080 | le32_to_cpu(response_data-> | |
5081 | SectorsPerAllocationUnit); | |
5082 | FSData->f_blocks = | |
5083 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5084 | FSData->f_bfree = FSData->f_bavail = | |
5085 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5086 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5087 | (unsigned long long)FSData->f_blocks, | |
5088 | (unsigned long long)FSData->f_bfree, | |
5089 | FSData->f_bsize); | |
1da177e4 LT |
5090 | } |
5091 | } | |
5092 | cifs_buf_release(pSMB); | |
5093 | ||
5094 | if (rc == -EAGAIN) | |
5095 | goto QFSInfoRetry; | |
5096 | ||
5097 | return rc; | |
5098 | } | |
5099 | ||
5100 | int | |
6d5786a3 | 5101 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5102 | { |
5103 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5104 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5105 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5106 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5107 | int rc = 0; | |
5108 | int bytes_returned = 0; | |
5109 | __u16 params, byte_count; | |
5110 | ||
f96637be | 5111 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5112 | QFSAttributeRetry: |
5113 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5114 | (void **) &pSMBr); | |
5115 | if (rc) | |
5116 | return rc; | |
5117 | ||
5118 | params = 2; /* level */ | |
5119 | pSMB->TotalDataCount = 0; | |
5120 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5121 | /* BB find exact max SMB PDU from sess structure BB */ |
5122 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5123 | pSMB->MaxSetupCount = 0; |
5124 | pSMB->Reserved = 0; | |
5125 | pSMB->Flags = 0; | |
5126 | pSMB->Timeout = 0; | |
5127 | pSMB->Reserved2 = 0; | |
5128 | byte_count = params + 1 /* pad */ ; | |
5129 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5130 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5131 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5132 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5133 | pSMB->DataCount = 0; |
5134 | pSMB->DataOffset = 0; | |
5135 | pSMB->SetupCount = 1; | |
5136 | pSMB->Reserved3 = 0; | |
5137 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5138 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5139 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5140 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5141 | ||
5142 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5143 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5144 | if (rc) { | |
f96637be | 5145 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5146 | } else { /* decode response */ |
5147 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5148 | ||
820a803f | 5149 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5150 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5151 | rc = -EIO; /* bad smb */ |
5152 | } else { | |
5153 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5154 | response_data = | |
5155 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5156 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5157 | data_offset); | |
5158 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5159 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5160 | } |
5161 | } | |
5162 | cifs_buf_release(pSMB); | |
5163 | ||
5164 | if (rc == -EAGAIN) | |
5165 | goto QFSAttributeRetry; | |
5166 | ||
5167 | return rc; | |
5168 | } | |
5169 | ||
5170 | int | |
6d5786a3 | 5171 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5172 | { |
5173 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5174 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5175 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5176 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5177 | int rc = 0; | |
5178 | int bytes_returned = 0; | |
5179 | __u16 params, byte_count; | |
5180 | ||
f96637be | 5181 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5182 | QFSDeviceRetry: |
5183 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5184 | (void **) &pSMBr); | |
5185 | if (rc) | |
5186 | return rc; | |
5187 | ||
5188 | params = 2; /* level */ | |
5189 | pSMB->TotalDataCount = 0; | |
5190 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5191 | /* BB find exact max SMB PDU from sess structure BB */ |
5192 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5193 | pSMB->MaxSetupCount = 0; |
5194 | pSMB->Reserved = 0; | |
5195 | pSMB->Flags = 0; | |
5196 | pSMB->Timeout = 0; | |
5197 | pSMB->Reserved2 = 0; | |
5198 | byte_count = params + 1 /* pad */ ; | |
5199 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5200 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5201 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5202 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5203 | |
5204 | pSMB->DataCount = 0; | |
5205 | pSMB->DataOffset = 0; | |
5206 | pSMB->SetupCount = 1; | |
5207 | pSMB->Reserved3 = 0; | |
5208 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5209 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5210 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5211 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5212 | ||
5213 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5214 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5215 | if (rc) { | |
f96637be | 5216 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5217 | } else { /* decode response */ |
5218 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5219 | ||
820a803f JL |
5220 | if (rc || get_bcc(&pSMBr->hdr) < |
5221 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5222 | rc = -EIO; /* bad smb */ |
5223 | else { | |
5224 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5225 | response_data = | |
737b758c SF |
5226 | (FILE_SYSTEM_DEVICE_INFO *) |
5227 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5228 | data_offset); |
5229 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5230 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5231 | } |
5232 | } | |
5233 | cifs_buf_release(pSMB); | |
5234 | ||
5235 | if (rc == -EAGAIN) | |
5236 | goto QFSDeviceRetry; | |
5237 | ||
5238 | return rc; | |
5239 | } | |
5240 | ||
5241 | int | |
6d5786a3 | 5242 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5243 | { |
5244 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5245 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5246 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5247 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5248 | int rc = 0; | |
5249 | int bytes_returned = 0; | |
5250 | __u16 params, byte_count; | |
5251 | ||
f96637be | 5252 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5253 | QFSUnixRetry: |
f569599a JL |
5254 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5255 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5256 | if (rc) |
5257 | return rc; | |
5258 | ||
5259 | params = 2; /* level */ | |
5260 | pSMB->TotalDataCount = 0; | |
5261 | pSMB->DataCount = 0; | |
5262 | pSMB->DataOffset = 0; | |
5263 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5264 | /* BB find exact max SMB PDU from sess structure BB */ |
5265 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5266 | pSMB->MaxSetupCount = 0; |
5267 | pSMB->Reserved = 0; | |
5268 | pSMB->Flags = 0; | |
5269 | pSMB->Timeout = 0; | |
5270 | pSMB->Reserved2 = 0; | |
5271 | byte_count = params + 1 /* pad */ ; | |
5272 | pSMB->ParameterCount = cpu_to_le16(params); | |
5273 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5274 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5275 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5276 | pSMB->SetupCount = 1; |
5277 | pSMB->Reserved3 = 0; | |
5278 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5279 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5280 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5281 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5282 | ||
5283 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5284 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5285 | if (rc) { | |
f96637be | 5286 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5287 | } else { /* decode response */ |
5288 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5289 | ||
820a803f | 5290 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5291 | rc = -EIO; /* bad smb */ |
5292 | } else { | |
5293 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5294 | response_data = | |
5295 | (FILE_SYSTEM_UNIX_INFO | |
5296 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5297 | data_offset); | |
5298 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5299 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5300 | } |
5301 | } | |
5302 | cifs_buf_release(pSMB); | |
5303 | ||
5304 | if (rc == -EAGAIN) | |
5305 | goto QFSUnixRetry; | |
5306 | ||
5307 | ||
5308 | return rc; | |
5309 | } | |
5310 | ||
ac67055e | 5311 | int |
6d5786a3 | 5312 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5313 | { |
5314 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5315 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5316 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5317 | int rc = 0; | |
5318 | int bytes_returned = 0; | |
5319 | __u16 params, param_offset, offset, byte_count; | |
5320 | ||
f96637be | 5321 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5322 | SETFSUnixRetry: |
f26282c9 | 5323 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5324 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5325 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5326 | if (rc) |
5327 | return rc; | |
5328 | ||
5329 | params = 4; /* 2 bytes zero followed by info level. */ | |
5330 | pSMB->MaxSetupCount = 0; | |
5331 | pSMB->Reserved = 0; | |
5332 | pSMB->Flags = 0; | |
5333 | pSMB->Timeout = 0; | |
5334 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5335 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5336 | - 4; | |
ac67055e JA |
5337 | offset = param_offset + params; |
5338 | ||
5339 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5340 | /* BB find exact max SMB PDU from sess structure BB */ |
5341 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5342 | pSMB->SetupCount = 1; |
5343 | pSMB->Reserved3 = 0; | |
5344 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5345 | byte_count = 1 /* pad */ + params + 12; | |
5346 | ||
5347 | pSMB->DataCount = cpu_to_le16(12); | |
5348 | pSMB->ParameterCount = cpu_to_le16(params); | |
5349 | pSMB->TotalDataCount = pSMB->DataCount; | |
5350 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5351 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5352 | pSMB->DataOffset = cpu_to_le16(offset); | |
5353 | ||
5354 | /* Params. */ | |
5355 | pSMB->FileNum = 0; | |
5356 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5357 | ||
5358 | /* Data. */ | |
5359 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5360 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5361 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5362 | ||
be8e3b00 | 5363 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5364 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5365 | ||
5366 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5367 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5368 | if (rc) { | |
f96637be | 5369 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5370 | } else { /* decode response */ |
5371 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5372 | if (rc) |
ac67055e | 5373 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5374 | } |
5375 | cifs_buf_release(pSMB); | |
5376 | ||
5377 | if (rc == -EAGAIN) | |
5378 | goto SETFSUnixRetry; | |
5379 | ||
5380 | return rc; | |
5381 | } | |
5382 | ||
5383 | ||
1da177e4 LT |
5384 | |
5385 | int | |
6d5786a3 | 5386 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5387 | struct kstatfs *FSData) |
1da177e4 LT |
5388 | { |
5389 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5390 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5391 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5392 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5393 | int rc = 0; | |
5394 | int bytes_returned = 0; | |
5395 | __u16 params, byte_count; | |
5396 | ||
f96637be | 5397 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5398 | QFSPosixRetry: |
5399 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5400 | (void **) &pSMBr); | |
5401 | if (rc) | |
5402 | return rc; | |
5403 | ||
5404 | params = 2; /* level */ | |
5405 | pSMB->TotalDataCount = 0; | |
5406 | pSMB->DataCount = 0; | |
5407 | pSMB->DataOffset = 0; | |
5408 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5409 | /* BB find exact max SMB PDU from sess structure BB */ |
5410 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5411 | pSMB->MaxSetupCount = 0; |
5412 | pSMB->Reserved = 0; | |
5413 | pSMB->Flags = 0; | |
5414 | pSMB->Timeout = 0; | |
5415 | pSMB->Reserved2 = 0; | |
5416 | byte_count = params + 1 /* pad */ ; | |
5417 | pSMB->ParameterCount = cpu_to_le16(params); | |
5418 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5419 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5420 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5421 | pSMB->SetupCount = 1; |
5422 | pSMB->Reserved3 = 0; | |
5423 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5424 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5425 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5426 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5427 | ||
5428 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5429 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5430 | if (rc) { | |
f96637be | 5431 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5432 | } else { /* decode response */ |
5433 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5434 | ||
820a803f | 5435 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5436 | rc = -EIO; /* bad smb */ |
5437 | } else { | |
5438 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5439 | response_data = | |
5440 | (FILE_SYSTEM_POSIX_INFO | |
5441 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5442 | data_offset); | |
5443 | FSData->f_bsize = | |
5444 | le32_to_cpu(response_data->BlockSize); | |
5445 | FSData->f_blocks = | |
5446 | le64_to_cpu(response_data->TotalBlocks); | |
5447 | FSData->f_bfree = | |
5448 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5449 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5450 | FSData->f_bavail = FSData->f_bfree; |
5451 | } else { | |
5452 | FSData->f_bavail = | |
50c2f753 | 5453 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5454 | } |
790fe579 | 5455 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5456 | FSData->f_files = |
50c2f753 | 5457 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5458 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5459 | FSData->f_ffree = |
50c2f753 | 5460 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5461 | } |
5462 | } | |
5463 | cifs_buf_release(pSMB); | |
5464 | ||
5465 | if (rc == -EAGAIN) | |
5466 | goto QFSPosixRetry; | |
5467 | ||
5468 | return rc; | |
5469 | } | |
5470 | ||
5471 | ||
d1433418 PS |
5472 | /* |
5473 | * We can not use write of zero bytes trick to set file size due to need for | |
5474 | * large file support. Also note that this SetPathInfo is preferred to | |
5475 | * SetFileInfo based method in next routine which is only needed to work around | |
5476 | * a sharing violation bugin Samba which this routine can run into. | |
5477 | */ | |
1da177e4 | 5478 | int |
6d5786a3 | 5479 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5480 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5481 | bool set_allocation) | |
1da177e4 LT |
5482 | { |
5483 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5484 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5485 | struct file_end_of_file_info *parm_data; | |
5486 | int name_len; | |
5487 | int rc = 0; | |
5488 | int bytes_returned = 0; | |
d1433418 PS |
5489 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
5490 | ||
1da177e4 LT |
5491 | __u16 params, byte_count, data_count, param_offset, offset; |
5492 | ||
f96637be | 5493 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5494 | SetEOFRetry: |
5495 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5496 | (void **) &pSMBr); | |
5497 | if (rc) | |
5498 | return rc; | |
5499 | ||
5500 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5501 | name_len = | |
d1433418 PS |
5502 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5503 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5504 | name_len++; /* trailing null */ |
5505 | name_len *= 2; | |
3e87d803 | 5506 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5507 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5508 | name_len++; /* trailing null */ |
d1433418 | 5509 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5510 | } |
5511 | params = 6 + name_len; | |
26f57364 | 5512 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5513 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5514 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5515 | pSMB->MaxSetupCount = 0; |
5516 | pSMB->Reserved = 0; | |
5517 | pSMB->Flags = 0; | |
5518 | pSMB->Timeout = 0; | |
5519 | pSMB->Reserved2 = 0; | |
5520 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5521 | InformationLevel) - 4; |
1da177e4 | 5522 | offset = param_offset + params; |
d1433418 | 5523 | if (set_allocation) { |
50c2f753 SF |
5524 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5525 | pSMB->InformationLevel = | |
5526 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5527 | else | |
5528 | pSMB->InformationLevel = | |
5529 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5530 | } else /* Set File Size */ { | |
1da177e4 LT |
5531 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5532 | pSMB->InformationLevel = | |
50c2f753 | 5533 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5534 | else |
5535 | pSMB->InformationLevel = | |
50c2f753 | 5536 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5537 | } |
5538 | ||
5539 | parm_data = | |
5540 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5541 | offset); | |
5542 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5543 | pSMB->DataOffset = cpu_to_le16(offset); | |
5544 | pSMB->SetupCount = 1; | |
5545 | pSMB->Reserved3 = 0; | |
5546 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5547 | byte_count = 3 /* pad */ + params + data_count; | |
5548 | pSMB->DataCount = cpu_to_le16(data_count); | |
5549 | pSMB->TotalDataCount = pSMB->DataCount; | |
5550 | pSMB->ParameterCount = cpu_to_le16(params); | |
5551 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5552 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5553 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5554 | parm_data->FileSize = cpu_to_le64(size); |
5555 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5556 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5557 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5558 | if (rc) |
f96637be | 5559 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5560 | |
5561 | cifs_buf_release(pSMB); | |
5562 | ||
5563 | if (rc == -EAGAIN) | |
5564 | goto SetEOFRetry; | |
5565 | ||
5566 | return rc; | |
5567 | } | |
5568 | ||
5569 | int | |
d1433418 PS |
5570 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5571 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5572 | { |
5573 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5574 | struct file_end_of_file_info *parm_data; |
5575 | int rc = 0; | |
1da177e4 LT |
5576 | __u16 params, param_offset, offset, byte_count, count; |
5577 | ||
f96637be JP |
5578 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5579 | (long long)size); | |
cd63499c SF |
5580 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5581 | ||
1da177e4 LT |
5582 | if (rc) |
5583 | return rc; | |
5584 | ||
d1433418 PS |
5585 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5586 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5587 | |
1da177e4 LT |
5588 | params = 6; |
5589 | pSMB->MaxSetupCount = 0; | |
5590 | pSMB->Reserved = 0; | |
5591 | pSMB->Flags = 0; | |
5592 | pSMB->Timeout = 0; | |
5593 | pSMB->Reserved2 = 0; | |
5594 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5595 | offset = param_offset + params; | |
5596 | ||
1da177e4 LT |
5597 | count = sizeof(struct file_end_of_file_info); |
5598 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5599 | /* BB find exact max SMB PDU from sess structure BB */ |
5600 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5601 | pSMB->SetupCount = 1; |
5602 | pSMB->Reserved3 = 0; | |
5603 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5604 | byte_count = 3 /* pad */ + params + count; | |
5605 | pSMB->DataCount = cpu_to_le16(count); | |
5606 | pSMB->ParameterCount = cpu_to_le16(params); | |
5607 | pSMB->TotalDataCount = pSMB->DataCount; | |
5608 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5609 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5610 | parm_data = | |
50c2f753 SF |
5611 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5612 | + offset); | |
1da177e4 LT |
5613 | pSMB->DataOffset = cpu_to_le16(offset); |
5614 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5615 | pSMB->Fid = cfile->fid.netfid; |
5616 | if (set_allocation) { | |
1da177e4 LT |
5617 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5618 | pSMB->InformationLevel = | |
5619 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5620 | else | |
5621 | pSMB->InformationLevel = | |
5622 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5623 | } else /* Set File Size */ { |
1da177e4 LT |
5624 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5625 | pSMB->InformationLevel = | |
50c2f753 | 5626 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5627 | else |
5628 | pSMB->InformationLevel = | |
50c2f753 | 5629 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5630 | } |
5631 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5632 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5633 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5634 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5635 | if (rc) { |
f96637be JP |
5636 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5637 | rc); | |
1da177e4 LT |
5638 | } |
5639 | ||
50c2f753 | 5640 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5641 | since file handle passed in no longer valid */ |
5642 | ||
5643 | return rc; | |
5644 | } | |
5645 | ||
50c2f753 | 5646 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5647 | an open handle, rather than by pathname - this is awkward due to |
5648 | potential access conflicts on the open, but it is unavoidable for these | |
5649 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5650 | time and resort to the original setpathinfo level which takes the ancient | |
5651 | DOS time format with 2 second granularity */ | |
5652 | int | |
6d5786a3 | 5653 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5654 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5655 | { |
5656 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5657 | char *data_offset; |
5658 | int rc = 0; | |
1da177e4 LT |
5659 | __u16 params, param_offset, offset, byte_count, count; |
5660 | ||
f96637be | 5661 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5662 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5663 | ||
1da177e4 LT |
5664 | if (rc) |
5665 | return rc; | |
5666 | ||
2dd2dfa0 JL |
5667 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5668 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5669 | |
1da177e4 LT |
5670 | params = 6; |
5671 | pSMB->MaxSetupCount = 0; | |
5672 | pSMB->Reserved = 0; | |
5673 | pSMB->Flags = 0; | |
5674 | pSMB->Timeout = 0; | |
5675 | pSMB->Reserved2 = 0; | |
5676 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5677 | offset = param_offset + params; | |
5678 | ||
b2a3ad9c JL |
5679 | data_offset = (char *)pSMB + |
5680 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5681 | |
26f57364 | 5682 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5683 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5684 | /* BB find max SMB PDU from sess */ |
5685 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5686 | pSMB->SetupCount = 1; |
5687 | pSMB->Reserved3 = 0; | |
5688 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5689 | byte_count = 3 /* pad */ + params + count; | |
5690 | pSMB->DataCount = cpu_to_le16(count); | |
5691 | pSMB->ParameterCount = cpu_to_le16(params); | |
5692 | pSMB->TotalDataCount = pSMB->DataCount; | |
5693 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5694 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5695 | pSMB->DataOffset = cpu_to_le16(offset); | |
5696 | pSMB->Fid = fid; | |
5697 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5698 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5699 | else | |
5700 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5701 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5702 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5703 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5704 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5705 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5706 | if (rc) |
f96637be JP |
5707 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5708 | rc); | |
1da177e4 | 5709 | |
50c2f753 | 5710 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5711 | since file handle passed in no longer valid */ |
5712 | ||
5713 | return rc; | |
5714 | } | |
5715 | ||
6d22f098 | 5716 | int |
6d5786a3 | 5717 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5718 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5719 | { | |
5720 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5721 | char *data_offset; | |
5722 | int rc = 0; | |
5723 | __u16 params, param_offset, offset, byte_count, count; | |
5724 | ||
f96637be | 5725 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5726 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5727 | ||
5728 | if (rc) | |
5729 | return rc; | |
5730 | ||
5731 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5732 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5733 | ||
5734 | params = 6; | |
5735 | pSMB->MaxSetupCount = 0; | |
5736 | pSMB->Reserved = 0; | |
5737 | pSMB->Flags = 0; | |
5738 | pSMB->Timeout = 0; | |
5739 | pSMB->Reserved2 = 0; | |
5740 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5741 | offset = param_offset + params; | |
5742 | ||
5743 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5744 | ||
5745 | count = 1; | |
5746 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5747 | /* BB find max SMB PDU from sess */ | |
5748 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5749 | pSMB->SetupCount = 1; | |
5750 | pSMB->Reserved3 = 0; | |
5751 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5752 | byte_count = 3 /* pad */ + params + count; | |
5753 | pSMB->DataCount = cpu_to_le16(count); | |
5754 | pSMB->ParameterCount = cpu_to_le16(params); | |
5755 | pSMB->TotalDataCount = pSMB->DataCount; | |
5756 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5757 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5758 | pSMB->DataOffset = cpu_to_le16(offset); | |
5759 | pSMB->Fid = fid; | |
5760 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5761 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5762 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5763 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5764 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5765 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5766 | if (rc) |
f96637be | 5767 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5768 | |
5769 | return rc; | |
5770 | } | |
1da177e4 LT |
5771 | |
5772 | int | |
6d5786a3 | 5773 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5774 | const char *fileName, const FILE_BASIC_INFO *data, |
5775 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5776 | { |
5777 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5778 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5779 | int name_len; | |
5780 | int rc = 0; | |
5781 | int bytes_returned = 0; | |
5782 | char *data_offset; | |
5783 | __u16 params, param_offset, offset, byte_count, count; | |
5784 | ||
f96637be | 5785 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5786 | |
5787 | SetTimesRetry: | |
5788 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5789 | (void **) &pSMBr); | |
5790 | if (rc) | |
5791 | return rc; | |
5792 | ||
5793 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5794 | name_len = | |
acbbb76a SF |
5795 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5796 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5797 | name_len++; /* trailing null */ |
5798 | name_len *= 2; | |
50c2f753 | 5799 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5800 | name_len = strnlen(fileName, PATH_MAX); |
5801 | name_len++; /* trailing null */ | |
5802 | strncpy(pSMB->FileName, fileName, name_len); | |
5803 | } | |
5804 | ||
5805 | params = 6 + name_len; | |
26f57364 | 5806 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5807 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5808 | /* BB find max SMB PDU from sess structure BB */ |
5809 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5810 | pSMB->MaxSetupCount = 0; |
5811 | pSMB->Reserved = 0; | |
5812 | pSMB->Flags = 0; | |
5813 | pSMB->Timeout = 0; | |
5814 | pSMB->Reserved2 = 0; | |
5815 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5816 | InformationLevel) - 4; |
1da177e4 LT |
5817 | offset = param_offset + params; |
5818 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5819 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5820 | pSMB->DataOffset = cpu_to_le16(offset); | |
5821 | pSMB->SetupCount = 1; | |
5822 | pSMB->Reserved3 = 0; | |
5823 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5824 | byte_count = 3 /* pad */ + params + count; | |
5825 | ||
5826 | pSMB->DataCount = cpu_to_le16(count); | |
5827 | pSMB->ParameterCount = cpu_to_le16(params); | |
5828 | pSMB->TotalDataCount = pSMB->DataCount; | |
5829 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5830 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5831 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5832 | else | |
5833 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5834 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5835 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5836 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5837 | pSMB->ByteCount = cpu_to_le16(byte_count); |
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, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5842 | |
5843 | cifs_buf_release(pSMB); | |
5844 | ||
5845 | if (rc == -EAGAIN) | |
5846 | goto SetTimesRetry; | |
5847 | ||
5848 | return rc; | |
5849 | } | |
5850 | ||
5851 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5852 | /* Can be used to set attributes */ | |
5853 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5854 | handling it anyway and NT4 was what we thought it would be needed for | |
5855 | Do not delete it until we prove whether needed for Win9x though */ | |
5856 | int | |
6d5786a3 | 5857 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5858 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5859 | { | |
5860 | SETATTR_REQ *pSMB = NULL; | |
5861 | SETATTR_RSP *pSMBr = NULL; | |
5862 | int rc = 0; | |
5863 | int bytes_returned; | |
5864 | int name_len; | |
5865 | ||
f96637be | 5866 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5867 | |
5868 | SetAttrLgcyRetry: | |
5869 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5870 | (void **) &pSMBr); | |
5871 | if (rc) | |
5872 | return rc; | |
5873 | ||
5874 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5875 | name_len = | |
acbbb76a SF |
5876 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5877 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5878 | name_len++; /* trailing null */ |
5879 | name_len *= 2; | |
50c2f753 | 5880 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5881 | name_len = strnlen(fileName, PATH_MAX); |
5882 | name_len++; /* trailing null */ | |
5883 | strncpy(pSMB->fileName, fileName, name_len); | |
5884 | } | |
5885 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5886 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5887 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5888 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5889 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5890 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5891 | if (rc) |
f96637be | 5892 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5893 | |
5894 | cifs_buf_release(pSMB); | |
5895 | ||
5896 | if (rc == -EAGAIN) | |
5897 | goto SetAttrLgcyRetry; | |
5898 | ||
5899 | return rc; | |
5900 | } | |
5901 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5902 | ||
654cf14a JL |
5903 | static void |
5904 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5905 | const struct cifs_unix_set_info_args *args) | |
5906 | { | |
49418b2c | 5907 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5908 | u64 mode = args->mode; |
5909 | ||
49418b2c EB |
5910 | if (uid_valid(args->uid)) |
5911 | uid = from_kuid(&init_user_ns, args->uid); | |
5912 | if (gid_valid(args->gid)) | |
5913 | gid = from_kgid(&init_user_ns, args->gid); | |
5914 | ||
654cf14a JL |
5915 | /* |
5916 | * Samba server ignores set of file size to zero due to bugs in some | |
5917 | * older clients, but we should be precise - we use SetFileSize to | |
5918 | * set file size and do not want to truncate file size to zero | |
25985edc | 5919 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5920 | * zero instead of -1 here |
5921 | */ | |
5922 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5923 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5924 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5925 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5926 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5927 | data_offset->Uid = cpu_to_le64(uid); |
5928 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5929 | /* better to leave device as zero when it is */ |
5930 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5931 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5932 | data_offset->Permissions = cpu_to_le64(mode); | |
5933 | ||
5934 | if (S_ISREG(mode)) | |
5935 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5936 | else if (S_ISDIR(mode)) | |
5937 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5938 | else if (S_ISLNK(mode)) | |
5939 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5940 | else if (S_ISCHR(mode)) | |
5941 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5942 | else if (S_ISBLK(mode)) | |
5943 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5944 | else if (S_ISFIFO(mode)) | |
5945 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5946 | else if (S_ISSOCK(mode)) | |
5947 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5948 | } | |
5949 | ||
3bbeeb3c | 5950 | int |
6d5786a3 | 5951 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5952 | const struct cifs_unix_set_info_args *args, |
5953 | u16 fid, u32 pid_of_opener) | |
5954 | { | |
5955 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5956 | char *data_offset; |
3bbeeb3c JL |
5957 | int rc = 0; |
5958 | u16 params, param_offset, offset, byte_count, count; | |
5959 | ||
f96637be | 5960 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5961 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5962 | ||
5963 | if (rc) | |
5964 | return rc; | |
5965 | ||
5966 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5967 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5968 | ||
5969 | params = 6; | |
5970 | pSMB->MaxSetupCount = 0; | |
5971 | pSMB->Reserved = 0; | |
5972 | pSMB->Flags = 0; | |
5973 | pSMB->Timeout = 0; | |
5974 | pSMB->Reserved2 = 0; | |
5975 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5976 | offset = param_offset + params; | |
5977 | ||
b2a3ad9c JL |
5978 | data_offset = (char *)pSMB + |
5979 | offsetof(struct smb_hdr, Protocol) + offset; | |
5980 | ||
3bbeeb3c JL |
5981 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5982 | ||
5983 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5984 | /* BB find max SMB PDU from sess */ | |
5985 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5986 | pSMB->SetupCount = 1; | |
5987 | pSMB->Reserved3 = 0; | |
5988 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5989 | byte_count = 3 /* pad */ + params + count; | |
5990 | pSMB->DataCount = cpu_to_le16(count); | |
5991 | pSMB->ParameterCount = cpu_to_le16(params); | |
5992 | pSMB->TotalDataCount = pSMB->DataCount; | |
5993 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5994 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5995 | pSMB->DataOffset = cpu_to_le16(offset); | |
5996 | pSMB->Fid = fid; | |
5997 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5998 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5999 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
6000 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6001 | ||
b2a3ad9c | 6002 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 6003 | |
792af7b0 | 6004 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 6005 | if (rc) |
f96637be JP |
6006 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
6007 | rc); | |
3bbeeb3c JL |
6008 | |
6009 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
6010 | since file handle passed in no longer valid */ | |
6011 | ||
6012 | return rc; | |
6013 | } | |
6014 | ||
1da177e4 | 6015 | int |
6d5786a3 | 6016 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6017 | const char *file_name, |
01ea95e3 JL |
6018 | const struct cifs_unix_set_info_args *args, |
6019 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6020 | { |
6021 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6022 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6023 | int name_len; | |
6024 | int rc = 0; | |
6025 | int bytes_returned = 0; | |
6026 | FILE_UNIX_BASIC_INFO *data_offset; | |
6027 | __u16 params, param_offset, offset, count, byte_count; | |
6028 | ||
f96637be | 6029 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6030 | setPermsRetry: |
6031 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6032 | (void **) &pSMBr); | |
6033 | if (rc) | |
6034 | return rc; | |
6035 | ||
6036 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6037 | name_len = | |
ff691e96 | 6038 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6039 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6040 | name_len++; /* trailing null */ |
6041 | name_len *= 2; | |
3e87d803 | 6042 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6043 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6044 | name_len++; /* trailing null */ |
ff691e96 | 6045 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6046 | } |
6047 | ||
6048 | params = 6 + name_len; | |
26f57364 | 6049 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6050 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6051 | /* BB find max SMB PDU from sess structure BB */ |
6052 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6053 | pSMB->MaxSetupCount = 0; |
6054 | pSMB->Reserved = 0; | |
6055 | pSMB->Flags = 0; | |
6056 | pSMB->Timeout = 0; | |
6057 | pSMB->Reserved2 = 0; | |
6058 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6059 | InformationLevel) - 4; |
1da177e4 LT |
6060 | offset = param_offset + params; |
6061 | data_offset = | |
6062 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6063 | offset); | |
6064 | memset(data_offset, 0, count); | |
6065 | pSMB->DataOffset = cpu_to_le16(offset); | |
6066 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6067 | pSMB->SetupCount = 1; | |
6068 | pSMB->Reserved3 = 0; | |
6069 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6070 | byte_count = 3 /* pad */ + params + count; | |
6071 | pSMB->ParameterCount = cpu_to_le16(params); | |
6072 | pSMB->DataCount = cpu_to_le16(count); | |
6073 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6074 | pSMB->TotalDataCount = pSMB->DataCount; | |
6075 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6076 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6077 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6078 | |
654cf14a | 6079 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6080 | |
6081 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6082 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6083 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6084 | if (rc) |
f96637be | 6085 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6086 | |
0d817bc0 | 6087 | cifs_buf_release(pSMB); |
1da177e4 LT |
6088 | if (rc == -EAGAIN) |
6089 | goto setPermsRetry; | |
6090 | return rc; | |
6091 | } | |
6092 | ||
1da177e4 | 6093 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6094 | /* |
6095 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6096 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6097 | * it looks for that attribute name and stuffs that value into the EAData | |
6098 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6099 | * buffer. In both cases, the return value is either the length of the | |
6100 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6101 | * the data isn't copied to it, but the length is returned. | |
6102 | */ | |
1da177e4 | 6103 | ssize_t |
6d5786a3 | 6104 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6105 | const unsigned char *searchName, const unsigned char *ea_name, |
6106 | char *EAData, size_t buf_size, | |
6107 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6108 | { |
6109 | /* BB assumes one setup word */ | |
6110 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6111 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6112 | int rc = 0; | |
6113 | int bytes_returned; | |
6e462b9f | 6114 | int list_len; |
f0d3868b | 6115 | struct fealist *ea_response_data; |
50c2f753 SF |
6116 | struct fea *temp_fea; |
6117 | char *temp_ptr; | |
0cd126b5 | 6118 | char *end_of_smb; |
f0d3868b | 6119 | __u16 params, byte_count, data_offset; |
5980fc96 | 6120 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6121 | |
f96637be | 6122 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6123 | QAllEAsRetry: |
6124 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6125 | (void **) &pSMBr); | |
6126 | if (rc) | |
6127 | return rc; | |
6128 | ||
6129 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6130 | list_len = |
acbbb76a SF |
6131 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6132 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6133 | list_len++; /* trailing null */ |
6134 | list_len *= 2; | |
1da177e4 | 6135 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6136 | list_len = strnlen(searchName, PATH_MAX); |
6137 | list_len++; /* trailing null */ | |
6138 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6139 | } |
6140 | ||
6e462b9f | 6141 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6142 | pSMB->TotalDataCount = 0; |
6143 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6144 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6145 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6146 | pSMB->MaxSetupCount = 0; |
6147 | pSMB->Reserved = 0; | |
6148 | pSMB->Flags = 0; | |
6149 | pSMB->Timeout = 0; | |
6150 | pSMB->Reserved2 = 0; | |
6151 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6152 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6153 | pSMB->DataCount = 0; |
6154 | pSMB->DataOffset = 0; | |
6155 | pSMB->SetupCount = 1; | |
6156 | pSMB->Reserved3 = 0; | |
6157 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6158 | byte_count = params + 1 /* pad */ ; | |
6159 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6160 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6161 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6162 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6163 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6164 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6165 | ||
6166 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6167 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6168 | if (rc) { | |
f96637be | 6169 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6170 | goto QAllEAsOut; |
6171 | } | |
1da177e4 | 6172 | |
f0d3868b JL |
6173 | |
6174 | /* BB also check enough total bytes returned */ | |
6175 | /* BB we need to improve the validity checking | |
6176 | of these trans2 responses */ | |
6177 | ||
6178 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6179 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6180 | rc = -EIO; /* bad smb */ |
6181 | goto QAllEAsOut; | |
6182 | } | |
6183 | ||
6184 | /* check that length of list is not more than bcc */ | |
6185 | /* check that each entry does not go beyond length | |
6186 | of list */ | |
6187 | /* check that each element of each entry does not | |
6188 | go beyond end of list */ | |
6189 | /* validate_trans2_offsets() */ | |
6190 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6191 | ||
6192 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6193 | ea_response_data = (struct fealist *) | |
6194 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6195 | ||
6e462b9f | 6196 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6197 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6198 | if (list_len <= 8) { |
f96637be | 6199 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6200 | /* didn't find the named attribute */ |
6201 | if (ea_name) | |
6202 | rc = -ENODATA; | |
f0d3868b JL |
6203 | goto QAllEAsOut; |
6204 | } | |
6205 | ||
0cd126b5 | 6206 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6207 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6208 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6209 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6210 | rc = -EIO; |
6211 | goto QAllEAsOut; | |
6212 | } | |
6213 | ||
f0d3868b | 6214 | /* account for ea list len */ |
6e462b9f | 6215 | list_len -= 4; |
f0d3868b JL |
6216 | temp_fea = ea_response_data->list; |
6217 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6218 | while (list_len > 0) { |
122ca007 | 6219 | unsigned int name_len; |
f0d3868b | 6220 | __u16 value_len; |
0cd126b5 | 6221 | |
6e462b9f | 6222 | list_len -= 4; |
f0d3868b | 6223 | temp_ptr += 4; |
0cd126b5 JL |
6224 | /* make sure we can read name_len and value_len */ |
6225 | if (list_len < 0) { | |
f96637be | 6226 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6227 | rc = -EIO; |
6228 | goto QAllEAsOut; | |
6229 | } | |
6230 | ||
6231 | name_len = temp_fea->name_len; | |
6232 | value_len = le16_to_cpu(temp_fea->value_len); | |
6233 | list_len -= name_len + 1 + value_len; | |
6234 | if (list_len < 0) { | |
f96637be | 6235 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6236 | rc = -EIO; |
6237 | goto QAllEAsOut; | |
6238 | } | |
6239 | ||
31c0519f | 6240 | if (ea_name) { |
91d065c4 | 6241 | if (ea_name_len == name_len && |
ac423446 | 6242 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6243 | temp_ptr += name_len + 1; |
6244 | rc = value_len; | |
6245 | if (buf_size == 0) | |
6246 | goto QAllEAsOut; | |
6247 | if ((size_t)value_len > buf_size) { | |
6248 | rc = -ERANGE; | |
6249 | goto QAllEAsOut; | |
6250 | } | |
6251 | memcpy(EAData, temp_ptr, value_len); | |
6252 | goto QAllEAsOut; | |
6253 | } | |
f0d3868b | 6254 | } else { |
31c0519f JL |
6255 | /* account for prefix user. and trailing null */ |
6256 | rc += (5 + 1 + name_len); | |
6257 | if (rc < (int) buf_size) { | |
6258 | memcpy(EAData, "user.", 5); | |
6259 | EAData += 5; | |
6260 | memcpy(EAData, temp_ptr, name_len); | |
6261 | EAData += name_len; | |
6262 | /* null terminate name */ | |
6263 | *EAData = 0; | |
6264 | ++EAData; | |
6265 | } else if (buf_size == 0) { | |
6266 | /* skip copy - calc size only */ | |
6267 | } else { | |
6268 | /* stop before overrun buffer */ | |
6269 | rc = -ERANGE; | |
6270 | break; | |
6271 | } | |
1da177e4 | 6272 | } |
0cd126b5 | 6273 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6274 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6275 | } |
f0d3868b | 6276 | |
31c0519f JL |
6277 | /* didn't find the named attribute */ |
6278 | if (ea_name) | |
6279 | rc = -ENODATA; | |
6280 | ||
f0d3868b | 6281 | QAllEAsOut: |
0d817bc0 | 6282 | cifs_buf_release(pSMB); |
1da177e4 LT |
6283 | if (rc == -EAGAIN) |
6284 | goto QAllEAsRetry; | |
6285 | ||
6286 | return (ssize_t)rc; | |
6287 | } | |
6288 | ||
1da177e4 | 6289 | int |
6d5786a3 PS |
6290 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6291 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6292 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6293 | int remap) | |
1da177e4 LT |
6294 | { |
6295 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6296 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6297 | struct fealist *parm_data; | |
6298 | int name_len; | |
6299 | int rc = 0; | |
6300 | int bytes_returned = 0; | |
6301 | __u16 params, param_offset, byte_count, offset, count; | |
6302 | ||
f96637be | 6303 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6304 | SetEARetry: |
6305 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6306 | (void **) &pSMBr); | |
6307 | if (rc) | |
6308 | return rc; | |
6309 | ||
6310 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6311 | name_len = | |
acbbb76a SF |
6312 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6313 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6314 | name_len++; /* trailing null */ |
6315 | name_len *= 2; | |
50c2f753 | 6316 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6317 | name_len = strnlen(fileName, PATH_MAX); |
6318 | name_len++; /* trailing null */ | |
6319 | strncpy(pSMB->FileName, fileName, name_len); | |
6320 | } | |
6321 | ||
6322 | params = 6 + name_len; | |
6323 | ||
6324 | /* done calculating parms using name_len of file name, | |
6325 | now use name_len to calculate length of ea name | |
6326 | we are going to create in the inode xattrs */ | |
790fe579 | 6327 | if (ea_name == NULL) |
1da177e4 LT |
6328 | name_len = 0; |
6329 | else | |
50c2f753 | 6330 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6331 | |
dae5dbdb | 6332 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6333 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6334 | /* BB find max SMB PDU from sess */ |
6335 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6336 | pSMB->MaxSetupCount = 0; |
6337 | pSMB->Reserved = 0; | |
6338 | pSMB->Flags = 0; | |
6339 | pSMB->Timeout = 0; | |
6340 | pSMB->Reserved2 = 0; | |
6341 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6342 | InformationLevel) - 4; |
1da177e4 LT |
6343 | offset = param_offset + params; |
6344 | pSMB->InformationLevel = | |
6345 | cpu_to_le16(SMB_SET_FILE_EA); | |
6346 | ||
6347 | parm_data = | |
6348 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6349 | offset); | |
6350 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6351 | pSMB->DataOffset = cpu_to_le16(offset); | |
6352 | pSMB->SetupCount = 1; | |
6353 | pSMB->Reserved3 = 0; | |
6354 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6355 | byte_count = 3 /* pad */ + params + count; | |
6356 | pSMB->DataCount = cpu_to_le16(count); | |
6357 | parm_data->list_len = cpu_to_le32(count); | |
6358 | parm_data->list[0].EA_flags = 0; | |
6359 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6360 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6361 | /* EA names are always ASCII */ |
790fe579 | 6362 | if (ea_name) |
50c2f753 | 6363 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6364 | parm_data->list[0].name[name_len] = 0; |
6365 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6366 | /* caller ensures that ea_value_len is less than 64K but | |
6367 | we need to ensure that it fits within the smb */ | |
6368 | ||
50c2f753 SF |
6369 | /*BB add length check to see if it would fit in |
6370 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6371 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6372 | if (ea_value_len) | |
50c2f753 SF |
6373 | memcpy(parm_data->list[0].name+name_len+1, |
6374 | ea_value, ea_value_len); | |
1da177e4 LT |
6375 | |
6376 | pSMB->TotalDataCount = pSMB->DataCount; | |
6377 | pSMB->ParameterCount = cpu_to_le16(params); | |
6378 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6379 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6380 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6381 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6382 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6383 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6384 | if (rc) |
f96637be | 6385 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6386 | |
6387 | cifs_buf_release(pSMB); | |
6388 | ||
6389 | if (rc == -EAGAIN) | |
6390 | goto SetEARetry; | |
6391 | ||
6392 | return rc; | |
6393 | } | |
1da177e4 | 6394 | #endif |
0eff0e26 SF |
6395 | |
6396 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6397 | /* | |
6398 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6399 | * to allow network clients (such as Windows) to display updated | |
6400 | * lists of files in directory listings automatically when | |
6401 | * files are added by one user when another user has the | |
6402 | * same directory open on their desktop. The Linux cifs kernel | |
6403 | * client hooked into the kernel side of this interface for | |
6404 | * the same reason, but ironically when the VFS moved from | |
6405 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6406 | * network file system clients (the most obvious use case | |
6407 | * for notify interfaces is when multiple users can update | |
6408 | * the contents of the same directory - exactly what network | |
6409 | * file systems can do) although the server (Samba) could | |
6410 | * still use it. For the short term we leave the worker | |
6411 | * function ifdeffed out (below) until inotify is fixed | |
6412 | * in the VFS to make it easier to plug in network file | |
6413 | * system clients. If inotify turns out to be permanently | |
6414 | * incompatible for network fs clients, we could instead simply | |
6415 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6416 | */ | |
6d5786a3 | 6417 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6418 | const int notify_subdirs, const __u16 netfid, |
6419 | __u32 filter, struct file *pfile, int multishot, | |
6420 | const struct nls_table *nls_codepage) | |
6421 | { | |
6422 | int rc = 0; | |
6423 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6424 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6425 | struct dir_notify_req *dnotify_req; | |
6426 | int bytes_returned; | |
6427 | ||
f96637be | 6428 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6429 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6430 | (void **) &pSMBr); | |
6431 | if (rc) | |
6432 | return rc; | |
6433 | ||
6434 | pSMB->TotalParameterCount = 0 ; | |
6435 | pSMB->TotalDataCount = 0; | |
6436 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6437 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6438 | pSMB->MaxSetupCount = 4; |
6439 | pSMB->Reserved = 0; | |
6440 | pSMB->ParameterOffset = 0; | |
6441 | pSMB->DataCount = 0; | |
6442 | pSMB->DataOffset = 0; | |
6443 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6444 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6445 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6446 | if (notify_subdirs) | |
6447 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6448 | pSMB->Reserved2 = 0; | |
6449 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6450 | pSMB->Fid = netfid; /* file handle always le */ | |
6451 | pSMB->ByteCount = 0; | |
6452 | ||
6453 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6454 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6455 | CIFS_ASYNC_OP); | |
6456 | if (rc) { | |
f96637be | 6457 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6458 | } else { |
6459 | /* Add file to outstanding requests */ | |
6460 | /* BB change to kmem cache alloc */ | |
6461 | dnotify_req = kmalloc( | |
6462 | sizeof(struct dir_notify_req), | |
6463 | GFP_KERNEL); | |
6464 | if (dnotify_req) { | |
6465 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6466 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6467 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6468 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6469 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6470 | dnotify_req->netfid = netfid; | |
6471 | dnotify_req->pfile = pfile; | |
6472 | dnotify_req->filter = filter; | |
6473 | dnotify_req->multishot = multishot; | |
6474 | spin_lock(&GlobalMid_Lock); | |
6475 | list_add_tail(&dnotify_req->lhead, | |
6476 | &GlobalDnotifyReqList); | |
6477 | spin_unlock(&GlobalMid_Lock); | |
6478 | } else | |
6479 | rc = -ENOMEM; | |
6480 | } | |
6481 | cifs_buf_release(pSMB); | |
6482 | return rc; | |
6483 | } | |
6484 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |