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> | |
7c0f6ba6 | 38 | #include <linux/uaccess.h> |
1da177e4 LT |
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" |
db223a59 | 46 | #include "smbdirect.h" |
1da177e4 LT |
47 | |
48 | #ifdef CONFIG_CIFS_POSIX | |
49 | static struct { | |
50 | int index; | |
51 | char *name; | |
52 | } protocols[] = { | |
3979877e SF |
53 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
54 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 55 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 56 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 57 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 58 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
59 | {BAD_PROT, "\2"} |
60 | }; | |
61 | #else | |
62 | static struct { | |
63 | int index; | |
64 | char *name; | |
65 | } protocols[] = { | |
3979877e SF |
66 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
67 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 68 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 69 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 70 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
71 | {BAD_PROT, "\2"} |
72 | }; | |
73 | #endif | |
74 | ||
3979877e SF |
75 | /* define the number of elements in the cifs dialect array */ |
76 | #ifdef CONFIG_CIFS_POSIX | |
77 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 78 | #define CIFS_NUM_PROT 4 |
3979877e SF |
79 | #else |
80 | #define CIFS_NUM_PROT 2 | |
81 | #endif /* CIFS_WEAK_PW_HASH */ | |
82 | #else /* not posix */ | |
83 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 84 | #define CIFS_NUM_PROT 3 |
3979877e SF |
85 | #else |
86 | #define CIFS_NUM_PROT 1 | |
87 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
88 | #endif /* CIFS_POSIX */ | |
89 | ||
aa24d1e9 PS |
90 | /* |
91 | * Mark as invalid, all open files on tree connections since they | |
92 | * were closed when session to server was lost. | |
93 | */ | |
94 | void | |
95 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
96 | { |
97 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
98 | struct list_head *tmp; |
99 | struct list_head *tmp1; | |
1da177e4 | 100 | |
aa24d1e9 | 101 | /* list all files open on tree connection and mark them invalid */ |
3afca265 | 102 | spin_lock(&tcon->open_file_lock); |
aa24d1e9 | 103 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 104 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 105 | open_file->invalidHandle = true; |
3bc303c2 | 106 | open_file->oplock_break_cancelled = true; |
1da177e4 | 107 | } |
3afca265 | 108 | spin_unlock(&tcon->open_file_lock); |
aa24d1e9 PS |
109 | /* |
110 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
111 | * to this tcon. | |
112 | */ | |
1da177e4 LT |
113 | } |
114 | ||
9162ab20 JL |
115 | /* reconnect the socket, tcon, and smb session if needed */ |
116 | static int | |
96daf2b0 | 117 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 118 | { |
c4a5534a | 119 | int rc; |
96daf2b0 | 120 | struct cifs_ses *ses; |
9162ab20 JL |
121 | struct TCP_Server_Info *server; |
122 | struct nls_table *nls_codepage; | |
123 | ||
124 | /* | |
125 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
126 | * tcp and smb session status done differently for those three - in the | |
127 | * calling routine | |
128 | */ | |
129 | if (!tcon) | |
130 | return 0; | |
131 | ||
132 | ses = tcon->ses; | |
133 | server = ses->server; | |
134 | ||
135 | /* | |
136 | * only tree disconnect, open, and write, (and ulogoff which does not | |
137 | * have tcon) are allowed as we start force umount | |
138 | */ | |
139 | if (tcon->tidStatus == CifsExiting) { | |
140 | if (smb_command != SMB_COM_WRITE_ANDX && | |
141 | smb_command != SMB_COM_OPEN_ANDX && | |
142 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
143 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
144 | smb_command); | |
9162ab20 JL |
145 | return -ENODEV; |
146 | } | |
147 | } | |
148 | ||
9162ab20 JL |
149 | /* |
150 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
151 | * greater than cifs socket timeout which is 7 seconds | |
152 | */ | |
153 | while (server->tcpStatus == CifsNeedReconnect) { | |
154 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 155 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 156 | |
fd88ce93 | 157 | /* are we still trying to reconnect? */ |
9162ab20 JL |
158 | if (server->tcpStatus != CifsNeedReconnect) |
159 | break; | |
160 | ||
161 | /* | |
162 | * on "soft" mounts we wait once. Hard mounts keep | |
163 | * retrying until process is killed or server comes | |
164 | * back on-line | |
165 | */ | |
d402539b | 166 | if (!tcon->retry) { |
f96637be | 167 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
168 | return -EHOSTDOWN; |
169 | } | |
170 | } | |
171 | ||
172 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
173 | return 0; | |
174 | ||
175 | nls_codepage = load_nls_default(); | |
176 | ||
177 | /* | |
178 | * need to prevent multiple threads trying to simultaneously | |
179 | * reconnect the same SMB session | |
180 | */ | |
d7b619cf | 181 | mutex_lock(&ses->session_mutex); |
76e75270 SC |
182 | |
183 | /* | |
184 | * Recheck after acquire mutex. If another thread is negotiating | |
185 | * and the server never sends an answer the socket will be closed | |
186 | * and tcpStatus set to reconnect. | |
187 | */ | |
188 | if (server->tcpStatus == CifsNeedReconnect) { | |
189 | rc = -EHOSTDOWN; | |
190 | mutex_unlock(&ses->session_mutex); | |
191 | goto out; | |
192 | } | |
193 | ||
198b5682 JL |
194 | rc = cifs_negotiate_protocol(0, ses); |
195 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
196 | rc = cifs_setup_session(0, ses, nls_codepage); |
197 | ||
198 | /* do we need to reconnect tcon? */ | |
199 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 200 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
201 | goto out; |
202 | } | |
203 | ||
aa24d1e9 | 204 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 205 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 206 | mutex_unlock(&ses->session_mutex); |
f96637be | 207 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 208 | |
c318e6c2 SF |
209 | if (rc) { |
210 | printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc); | |
9162ab20 | 211 | goto out; |
c318e6c2 | 212 | } |
9162ab20 | 213 | |
9162ab20 JL |
214 | atomic_inc(&tconInfoReconnectCount); |
215 | ||
216 | /* tell server Unix caps we support */ | |
217 | if (ses->capabilities & CAP_UNIX) | |
218 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
219 | ||
220 | /* | |
221 | * Removed call to reopen open files here. It is safer (and faster) to | |
222 | * reopen files one at a time as needed in read and write. | |
223 | * | |
224 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
225 | */ | |
226 | ||
227 | out: | |
228 | /* | |
229 | * Check if handle based operation so we know whether we can continue | |
230 | * or not without returning to caller to reset file handle | |
231 | */ | |
232 | switch (smb_command) { | |
233 | case SMB_COM_READ_ANDX: | |
234 | case SMB_COM_WRITE_ANDX: | |
235 | case SMB_COM_CLOSE: | |
236 | case SMB_COM_FIND_CLOSE2: | |
237 | case SMB_COM_LOCKING_ANDX: | |
238 | rc = -EAGAIN; | |
239 | } | |
240 | ||
241 | unload_nls(nls_codepage); | |
242 | return rc; | |
243 | } | |
244 | ||
ad7a2926 SF |
245 | /* Allocate and return pointer to an SMB request buffer, and set basic |
246 | SMB information in the SMB header. If the return code is zero, this | |
247 | function must have filled in request_buf pointer */ | |
1da177e4 | 248 | static int |
96daf2b0 | 249 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 250 | void **request_buf) |
1da177e4 | 251 | { |
f569599a | 252 | int rc; |
1da177e4 | 253 | |
9162ab20 | 254 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 255 | if (rc) |
1da177e4 LT |
256 | return rc; |
257 | ||
258 | *request_buf = cifs_small_buf_get(); | |
259 | if (*request_buf == NULL) { | |
260 | /* BB should we add a retry in here if not a writepage? */ | |
261 | return -ENOMEM; | |
262 | } | |
263 | ||
63135e08 | 264 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 265 | tcon, wct); |
1da177e4 | 266 | |
790fe579 SF |
267 | if (tcon != NULL) |
268 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 269 | |
f569599a | 270 | return 0; |
5815449d SF |
271 | } |
272 | ||
12b3b8ff | 273 | int |
50c2f753 | 274 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 275 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
276 | { |
277 | int rc; | |
50c2f753 | 278 | struct smb_hdr *buffer; |
12b3b8ff | 279 | |
5815449d | 280 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 281 | if (rc) |
12b3b8ff SF |
282 | return rc; |
283 | ||
04fdabe1 | 284 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 285 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
286 | if (ses->capabilities & CAP_UNICODE) |
287 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 288 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
289 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
290 | ||
291 | /* uid, tid can stay at zero as set in header assemble */ | |
292 | ||
50c2f753 | 293 | /* BB add support for turning on the signing when |
12b3b8ff SF |
294 | this function is used after 1st of session setup requests */ |
295 | ||
296 | return rc; | |
297 | } | |
1da177e4 LT |
298 | |
299 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
300 | static int | |
96daf2b0 | 301 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 302 | void **request_buf, void **response_buf) |
1da177e4 | 303 | { |
1da177e4 LT |
304 | *request_buf = cifs_buf_get(); |
305 | if (*request_buf == NULL) { | |
306 | /* BB should we add a retry in here if not a writepage? */ | |
307 | return -ENOMEM; | |
308 | } | |
309 | /* Although the original thought was we needed the response buf for */ | |
310 | /* potential retries of smb operations it turns out we can determine */ | |
311 | /* from the mid flags when the request buffer can be resent without */ | |
312 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 313 | if (response_buf) |
50c2f753 | 314 | *response_buf = *request_buf; |
1da177e4 LT |
315 | |
316 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 317 | wct); |
1da177e4 | 318 | |
790fe579 SF |
319 | if (tcon != NULL) |
320 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 321 | |
f569599a JL |
322 | return 0; |
323 | } | |
324 | ||
325 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
326 | static int | |
96daf2b0 | 327 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
328 | void **request_buf, void **response_buf) |
329 | { | |
330 | int rc; | |
331 | ||
332 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
333 | if (rc) | |
334 | return rc; | |
335 | ||
336 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
337 | } | |
338 | ||
339 | static int | |
96daf2b0 | 340 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
341 | void **request_buf, void **response_buf) |
342 | { | |
343 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
344 | return -EHOSTDOWN; | |
345 | ||
346 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
347 | } |
348 | ||
50c2f753 | 349 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 350 | { |
12df83c9 JL |
351 | unsigned int total_size; |
352 | ||
353 | /* check for plausible wct */ | |
354 | if (pSMB->hdr.WordCount < 10) | |
355 | goto vt2_err; | |
1da177e4 | 356 | |
1da177e4 | 357 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
358 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
359 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
360 | goto vt2_err; | |
361 | ||
12df83c9 JL |
362 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
363 | if (total_size >= 512) | |
364 | goto vt2_err; | |
365 | ||
fd5707e1 JL |
366 | /* check that bcc is at least as big as parms + data, and that it is |
367 | * less than negotiated smb buffer | |
368 | */ | |
12df83c9 JL |
369 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
370 | if (total_size > get_bcc(&pSMB->hdr) || | |
371 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
372 | goto vt2_err; | |
373 | ||
374 | return 0; | |
375 | vt2_err: | |
50c2f753 | 376 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 377 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 378 | return -EINVAL; |
1da177e4 | 379 | } |
690c522f | 380 | |
31d9e2bd | 381 | static int |
3f618223 | 382 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
383 | { |
384 | int rc = 0; | |
385 | u16 count; | |
386 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 387 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
388 | |
389 | count = get_bcc(&pSMBr->hdr); | |
390 | if (count < SMB1_CLIENT_GUID_SIZE) | |
391 | return -EIO; | |
392 | ||
393 | spin_lock(&cifs_tcp_ses_lock); | |
394 | if (server->srv_count > 1) { | |
395 | spin_unlock(&cifs_tcp_ses_lock); | |
396 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
397 | cifs_dbg(FYI, "server UID changed\n"); | |
398 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
399 | } | |
400 | } else { | |
401 | spin_unlock(&cifs_tcp_ses_lock); | |
402 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
403 | } | |
404 | ||
405 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 406 | server->sec_ntlmssp = true; |
31d9e2bd JL |
407 | } else { |
408 | count -= SMB1_CLIENT_GUID_SIZE; | |
409 | rc = decode_negTokenInit( | |
410 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
411 | if (rc != 1) | |
412 | return -EINVAL; | |
31d9e2bd JL |
413 | } |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
9ddec561 | 418 | int |
38d77c50 | 419 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 420 | { |
50285882 JL |
421 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
422 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
423 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
424 | ||
425 | /* | |
426 | * Is signing required by mnt options? If not then check | |
427 | * global_secflags to see if it is there. | |
428 | */ | |
429 | if (!mnt_sign_required) | |
430 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
431 | CIFSSEC_MUST_SIGN); | |
432 | ||
433 | /* | |
434 | * If signing is required then it's automatically enabled too, | |
435 | * otherwise, check to see if the secflags allow it. | |
436 | */ | |
437 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
438 | (global_secflags & CIFSSEC_MAY_SIGN); | |
439 | ||
440 | /* If server requires signing, does client allow it? */ | |
441 | if (srv_sign_required) { | |
442 | if (!mnt_sign_enabled) { | |
443 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
444 | return -ENOTSUPP; | |
9ddec561 | 445 | } |
38d77c50 JL |
446 | server->sign = true; |
447 | } | |
448 | ||
449 | /* If client requires signing, does server allow it? */ | |
450 | if (mnt_sign_required) { | |
451 | if (!srv_sign_enabled) { | |
452 | cifs_dbg(VFS, "Server does not support signing!"); | |
453 | return -ENOTSUPP; | |
454 | } | |
455 | server->sign = true; | |
9ddec561 JL |
456 | } |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
2190eca1 JL |
461 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
462 | static int | |
3f618223 | 463 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
464 | { |
465 | __s16 tmp; | |
466 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
467 | ||
468 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
469 | return -EOPNOTSUPP; | |
470 | ||
2190eca1 JL |
471 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
472 | server->maxReq = min_t(unsigned int, | |
473 | le16_to_cpu(rsp->MaxMpxCount), | |
474 | cifs_max_pending); | |
475 | set_credits(server, server->maxReq); | |
476 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
2190eca1 JL |
477 | /* even though we do not use raw we might as well set this |
478 | accurately, in case we ever find a need for it */ | |
479 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
480 | server->max_rw = 0xFF00; | |
481 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
482 | } else { | |
483 | server->max_rw = 0;/* do not need to use raw anyway */ | |
484 | server->capabilities = CAP_MPX_MODE; | |
485 | } | |
486 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
487 | if (tmp == -1) { | |
488 | /* OS/2 often does not set timezone therefore | |
489 | * we must use server time to calc time zone. | |
490 | * Could deviate slightly from the right zone. | |
491 | * Smallest defined timezone difference is 15 minutes | |
492 | * (i.e. Nepal). Rounding up/down is done to match | |
493 | * this requirement. | |
494 | */ | |
495 | int val, seconds, remain, result; | |
e37fea58 DD |
496 | struct timespec ts; |
497 | unsigned long utc = ktime_get_real_seconds(); | |
2190eca1 JL |
498 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
499 | rsp->SrvTime.Time, 0); | |
500 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
e37fea58 DD |
501 | (int)ts.tv_sec, (int)utc, |
502 | (int)(utc - ts.tv_sec)); | |
503 | val = (int)(utc - ts.tv_sec); | |
2190eca1 JL |
504 | seconds = abs(val); |
505 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
506 | remain = seconds % MIN_TZ_ADJ; | |
507 | if (remain >= (MIN_TZ_ADJ / 2)) | |
508 | result += MIN_TZ_ADJ; | |
509 | if (val < 0) | |
510 | result = -result; | |
511 | server->timeAdj = result; | |
512 | } else { | |
513 | server->timeAdj = (int)tmp; | |
514 | server->timeAdj *= 60; /* also in seconds */ | |
515 | } | |
516 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
517 | ||
518 | ||
519 | /* BB get server time for time conversions and add | |
520 | code to use it and timezone since this is not UTC */ | |
521 | ||
522 | if (rsp->EncryptionKeyLength == | |
523 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
524 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
525 | CIFS_CRYPTO_KEY_SIZE); | |
526 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
527 | return -EIO; /* need cryptkey unless plain text */ | |
528 | } | |
529 | ||
530 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
531 | return 0; | |
532 | } | |
533 | #else | |
534 | static inline int | |
3f618223 | 535 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
536 | { |
537 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
538 | return -EOPNOTSUPP; | |
539 | } | |
540 | #endif | |
541 | ||
9193400b | 542 | static bool |
3f618223 | 543 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 544 | { |
3f618223 JL |
545 | switch (sectype) { |
546 | case RawNTLMSSP: | |
547 | case Kerberos: | |
9193400b | 548 | return true; |
3f618223 JL |
549 | case Unspecified: |
550 | if (global_secflags & | |
551 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
552 | return true; | |
553 | /* Fallthrough */ | |
554 | default: | |
555 | return false; | |
556 | } | |
9193400b JL |
557 | } |
558 | ||
1da177e4 | 559 | int |
286170aa | 560 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
561 | { |
562 | NEGOTIATE_REQ *pSMB; | |
563 | NEGOTIATE_RSP *pSMBr; | |
564 | int rc = 0; | |
565 | int bytes_returned; | |
3979877e | 566 | int i; |
3534b850 | 567 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
568 | u16 count; |
569 | ||
3534b850 JL |
570 | if (!server) { |
571 | WARN(1, "%s: server is NULL!\n", __func__); | |
572 | return -EIO; | |
1da177e4 | 573 | } |
3534b850 | 574 | |
1da177e4 LT |
575 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
576 | (void **) &pSMB, (void **) &pSMBr); | |
577 | if (rc) | |
578 | return rc; | |
750d1151 | 579 | |
88257360 | 580 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 581 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 582 | |
3f618223 | 583 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 584 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
585 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
586 | } | |
50c2f753 | 587 | |
3979877e | 588 | count = 0; |
50c2f753 | 589 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
590 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
591 | count += strlen(protocols[i].name) + 1; | |
592 | /* null at end of source and target buffers anyway */ | |
593 | } | |
be8e3b00 | 594 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
595 | pSMB->ByteCount = cpu_to_le16(count); |
596 | ||
597 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
598 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 599 | if (rc != 0) |
254e55ed SF |
600 | goto neg_err_exit; |
601 | ||
9bf67e51 | 602 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 603 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 604 | /* Check wct = 1 error case */ |
9bf67e51 | 605 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 606 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 607 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
608 | could not negotiate a common dialect */ |
609 | rc = -EOPNOTSUPP; | |
610 | goto neg_err_exit; | |
790fe579 | 611 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 612 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 613 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 614 | goto signing_check; |
790fe579 | 615 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
616 | /* unknown wct */ |
617 | rc = -EOPNOTSUPP; | |
618 | goto neg_err_exit; | |
619 | } | |
2190eca1 JL |
620 | /* else wct == 17, NTLM or better */ |
621 | ||
96daf2b0 SF |
622 | server->sec_mode = pSMBr->SecurityMode; |
623 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 624 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 625 | |
254e55ed SF |
626 | /* one byte, so no need to convert this or EncryptionKeyLen from |
627 | little endian */ | |
10b9b98e PS |
628 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
629 | cifs_max_pending); | |
45275789 | 630 | set_credits(server, server->maxReq); |
254e55ed | 631 | /* probably no need to store and check maxvcs */ |
c974befa | 632 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 633 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 634 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 635 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
636 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
637 | server->timeAdj *= 60; | |
31d9e2bd | 638 | |
e598d1d8 JL |
639 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
640 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 641 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 642 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
643 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
644 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 645 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 646 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 647 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 648 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
649 | } else { |
650 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 651 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 652 | } |
254e55ed SF |
653 | |
654 | signing_check: | |
9ddec561 | 655 | if (!rc) |
38d77c50 | 656 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 657 | neg_err_exit: |
4a6d87f1 | 658 | cifs_buf_release(pSMB); |
254e55ed | 659 | |
f96637be | 660 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
661 | return rc; |
662 | } | |
663 | ||
664 | int | |
2e6e02ab | 665 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
666 | { |
667 | struct smb_hdr *smb_buffer; | |
1da177e4 | 668 | int rc = 0; |
1da177e4 | 669 | |
f96637be | 670 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 671 | |
f1987b44 JL |
672 | /* BB: do we need to check this? These should never be NULL. */ |
673 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
674 | return -EIO; | |
1da177e4 | 675 | |
f1987b44 JL |
676 | /* |
677 | * No need to return error on this operation if tid invalidated and | |
678 | * closed on server already e.g. due to tcp session crashing. Also, | |
679 | * the tcon is no longer on the list, so no need to take lock before | |
680 | * checking this. | |
681 | */ | |
268875b9 | 682 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 683 | return 0; |
1da177e4 | 684 | |
50c2f753 | 685 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 686 | (void **)&smb_buffer); |
f1987b44 | 687 | if (rc) |
1da177e4 | 688 | return rc; |
133672ef | 689 | |
792af7b0 | 690 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 691 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 692 | if (rc) |
f96637be | 693 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 694 | |
50c2f753 | 695 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 696 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
697 | if (rc == -EAGAIN) |
698 | rc = 0; | |
699 | ||
700 | return rc; | |
701 | } | |
702 | ||
766fdbb5 JL |
703 | /* |
704 | * This is a no-op for now. We're not really interested in the reply, but | |
705 | * rather in the fact that the server sent one and that server->lstrp | |
706 | * gets updated. | |
707 | * | |
708 | * FIXME: maybe we should consider checking that the reply matches request? | |
709 | */ | |
710 | static void | |
711 | cifs_echo_callback(struct mid_q_entry *mid) | |
712 | { | |
713 | struct TCP_Server_Info *server = mid->callback_data; | |
714 | ||
715 | DeleteMidQEntry(mid); | |
a891f0f8 | 716 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
717 | } |
718 | ||
719 | int | |
720 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
721 | { | |
722 | ECHO_REQ *smb; | |
723 | int rc = 0; | |
738f9de5 PS |
724 | struct kvec iov[2]; |
725 | struct smb_rqst rqst = { .rq_iov = iov, | |
726 | .rq_nvec = 2 }; | |
766fdbb5 | 727 | |
f96637be | 728 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
729 | |
730 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
731 | if (rc) | |
732 | return rc; | |
733 | ||
26c9cb66 SF |
734 | if (server->capabilities & CAP_UNICODE) |
735 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
736 | ||
766fdbb5 | 737 | /* set up echo request */ |
5443d130 | 738 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
739 | smb->hdr.WordCount = 1; |
740 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 741 | put_bcc(1, &smb->hdr); |
766fdbb5 | 742 | smb->Data[0] = 'a'; |
be8e3b00 | 743 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
744 | |
745 | iov[0].iov_len = 4; | |
746 | iov[0].iov_base = smb; | |
747 | iov[1].iov_len = get_rfc1002_length(smb); | |
748 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 749 | |
9b7c18a2 | 750 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
a891f0f8 | 751 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 752 | if (rc) |
f96637be | 753 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
754 | |
755 | cifs_small_buf_release(smb); | |
756 | ||
757 | return rc; | |
758 | } | |
759 | ||
1da177e4 | 760 | int |
58c45c58 | 761 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 762 | { |
1da177e4 LT |
763 | LOGOFF_ANDX_REQ *pSMB; |
764 | int rc = 0; | |
1da177e4 | 765 | |
f96637be | 766 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 767 | |
14fbf50d JL |
768 | /* |
769 | * BB: do we need to check validity of ses and server? They should | |
770 | * always be valid since we have an active reference. If not, that | |
771 | * should probably be a BUG() | |
772 | */ | |
773 | if (!ses || !ses->server) | |
3b795210 SF |
774 | return -EIO; |
775 | ||
d7b619cf | 776 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
777 | if (ses->need_reconnect) |
778 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
779 | already closed due to reconnect */ | |
1da177e4 LT |
780 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
781 | if (rc) { | |
d7b619cf | 782 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
783 | return rc; |
784 | } | |
785 | ||
88257360 | 786 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 787 | |
38d77c50 JL |
788 | if (ses->server->sign) |
789 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
790 | |
791 | pSMB->hdr.Uid = ses->Suid; | |
792 | ||
793 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 794 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 795 | cifs_small_buf_release(pSMB); |
3b795210 | 796 | session_already_dead: |
d7b619cf | 797 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
798 | |
799 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 800 | since server closed smb session, no sense reporting |
1da177e4 LT |
801 | error */ |
802 | if (rc == -EAGAIN) | |
803 | rc = 0; | |
804 | return rc; | |
805 | } | |
806 | ||
2d785a50 | 807 | int |
6d5786a3 PS |
808 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
809 | const char *fileName, __u16 type, | |
810 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
811 | { |
812 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
813 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
814 | struct unlink_psx_rq *pRqD; | |
815 | int name_len; | |
816 | int rc = 0; | |
817 | int bytes_returned = 0; | |
818 | __u16 params, param_offset, offset, byte_count; | |
819 | ||
f96637be | 820 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
821 | PsxDelete: |
822 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
823 | (void **) &pSMBr); | |
824 | if (rc) | |
825 | return rc; | |
826 | ||
827 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
828 | name_len = | |
acbbb76a SF |
829 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
830 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
831 | name_len++; /* trailing null */ |
832 | name_len *= 2; | |
833 | } else { /* BB add path length overrun check */ | |
834 | name_len = strnlen(fileName, PATH_MAX); | |
835 | name_len++; /* trailing null */ | |
836 | strncpy(pSMB->FileName, fileName, name_len); | |
837 | } | |
838 | ||
839 | params = 6 + name_len; | |
840 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
841 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
842 | pSMB->MaxSetupCount = 0; | |
843 | pSMB->Reserved = 0; | |
844 | pSMB->Flags = 0; | |
845 | pSMB->Timeout = 0; | |
846 | pSMB->Reserved2 = 0; | |
847 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
848 | InformationLevel) - 4; | |
849 | offset = param_offset + params; | |
850 | ||
851 | /* Setup pointer to Request Data (inode type) */ | |
852 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
853 | pRqD->type = cpu_to_le16(type); | |
854 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
855 | pSMB->DataOffset = cpu_to_le16(offset); | |
856 | pSMB->SetupCount = 1; | |
857 | pSMB->Reserved3 = 0; | |
858 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
859 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
860 | ||
861 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
862 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
863 | pSMB->ParameterCount = cpu_to_le16(params); | |
864 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
865 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
866 | pSMB->Reserved4 = 0; | |
be8e3b00 | 867 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
868 | pSMB->ByteCount = cpu_to_le16(byte_count); |
869 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
870 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 871 | if (rc) |
f96637be | 872 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
873 | cifs_buf_release(pSMB); |
874 | ||
44c58186 | 875 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
876 | |
877 | if (rc == -EAGAIN) | |
878 | goto PsxDelete; | |
879 | ||
880 | return rc; | |
881 | } | |
882 | ||
1da177e4 | 883 | int |
ed6875e0 PS |
884 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
885 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
886 | { |
887 | DELETE_FILE_REQ *pSMB = NULL; | |
888 | DELETE_FILE_RSP *pSMBr = NULL; | |
889 | int rc = 0; | |
890 | int bytes_returned; | |
891 | int name_len; | |
2baa2682 | 892 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
893 | |
894 | DelFileRetry: | |
895 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
896 | (void **) &pSMBr); | |
897 | if (rc) | |
898 | return rc; | |
899 | ||
900 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
901 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
902 | PATH_MAX, cifs_sb->local_nls, | |
903 | remap); | |
1da177e4 LT |
904 | name_len++; /* trailing null */ |
905 | name_len *= 2; | |
09d1db5c | 906 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 907 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 908 | name_len++; /* trailing null */ |
ed6875e0 | 909 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
910 | } |
911 | pSMB->SearchAttributes = | |
912 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
913 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 914 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
915 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
916 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
917 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 918 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 919 | if (rc) |
f96637be | 920 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
921 | |
922 | cifs_buf_release(pSMB); | |
923 | if (rc == -EAGAIN) | |
924 | goto DelFileRetry; | |
925 | ||
926 | return rc; | |
927 | } | |
928 | ||
929 | int | |
f958ca5d PS |
930 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
931 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
932 | { |
933 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
934 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
935 | int rc = 0; | |
936 | int bytes_returned; | |
937 | int name_len; | |
2baa2682 | 938 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 939 | |
f96637be | 940 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
941 | RmDirRetry: |
942 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
943 | (void **) &pSMBr); | |
944 | if (rc) | |
945 | return rc; | |
946 | ||
947 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
948 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
949 | PATH_MAX, cifs_sb->local_nls, | |
950 | remap); | |
1da177e4 LT |
951 | name_len++; /* trailing null */ |
952 | name_len *= 2; | |
09d1db5c | 953 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 954 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 955 | name_len++; /* trailing null */ |
f958ca5d | 956 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
957 | } |
958 | ||
959 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 960 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
961 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
962 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
963 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 964 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 965 | if (rc) |
f96637be | 966 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
967 | |
968 | cifs_buf_release(pSMB); | |
969 | if (rc == -EAGAIN) | |
970 | goto RmDirRetry; | |
971 | return rc; | |
972 | } | |
973 | ||
974 | int | |
f436720e PS |
975 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
976 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
977 | { |
978 | int rc = 0; | |
979 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
980 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
981 | int bytes_returned; | |
982 | int name_len; | |
2baa2682 | 983 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 984 | |
f96637be | 985 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
986 | MkDirRetry: |
987 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
988 | (void **) &pSMBr); | |
989 | if (rc) | |
990 | return rc; | |
991 | ||
992 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 993 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
994 | PATH_MAX, cifs_sb->local_nls, |
995 | remap); | |
1da177e4 LT |
996 | name_len++; /* trailing null */ |
997 | name_len *= 2; | |
09d1db5c | 998 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
999 | name_len = strnlen(name, PATH_MAX); |
1000 | name_len++; /* trailing null */ | |
1001 | strncpy(pSMB->DirName, name, name_len); | |
1002 | } | |
1003 | ||
1004 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1005 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1006 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1007 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1008 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1009 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1010 | if (rc) |
f96637be | 1011 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 1012 | |
1da177e4 LT |
1013 | cifs_buf_release(pSMB); |
1014 | if (rc == -EAGAIN) | |
1015 | goto MkDirRetry; | |
1016 | return rc; | |
1017 | } | |
1018 | ||
2dd29d31 | 1019 | int |
6d5786a3 PS |
1020 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1021 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1022 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1023 | const char *name, const struct nls_table *nls_codepage, | |
1024 | int remap) | |
2dd29d31 SF |
1025 | { |
1026 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1027 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1028 | int name_len; | |
1029 | int rc = 0; | |
1030 | int bytes_returned = 0; | |
2dd29d31 | 1031 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1032 | OPEN_PSX_REQ *pdata; |
1033 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1034 | |
f96637be | 1035 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1036 | PsxCreat: |
1037 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1038 | (void **) &pSMBr); | |
1039 | if (rc) | |
1040 | return rc; | |
1041 | ||
1042 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1043 | name_len = | |
acbbb76a SF |
1044 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1045 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1046 | name_len++; /* trailing null */ |
1047 | name_len *= 2; | |
1048 | } else { /* BB improve the check for buffer overruns BB */ | |
1049 | name_len = strnlen(name, PATH_MAX); | |
1050 | name_len++; /* trailing null */ | |
1051 | strncpy(pSMB->FileName, name, name_len); | |
1052 | } | |
1053 | ||
1054 | params = 6 + name_len; | |
1055 | count = sizeof(OPEN_PSX_REQ); | |
1056 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1057 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1058 | pSMB->MaxSetupCount = 0; | |
1059 | pSMB->Reserved = 0; | |
1060 | pSMB->Flags = 0; | |
1061 | pSMB->Timeout = 0; | |
1062 | pSMB->Reserved2 = 0; | |
1063 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1064 | InformationLevel) - 4; |
2dd29d31 | 1065 | offset = param_offset + params; |
2dd29d31 | 1066 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1067 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1068 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1069 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1070 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1071 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1072 | pSMB->DataOffset = cpu_to_le16(offset); | |
1073 | pSMB->SetupCount = 1; | |
1074 | pSMB->Reserved3 = 0; | |
1075 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1076 | byte_count = 3 /* pad */ + params + count; | |
1077 | ||
1078 | pSMB->DataCount = cpu_to_le16(count); | |
1079 | pSMB->ParameterCount = cpu_to_le16(params); | |
1080 | pSMB->TotalDataCount = pSMB->DataCount; | |
1081 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1082 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1083 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1084 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1085 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1086 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1087 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1088 | if (rc) { | |
f96637be | 1089 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1090 | goto psx_create_err; |
1091 | } | |
1092 | ||
f96637be | 1093 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1094 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1095 | ||
820a803f | 1096 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1097 | rc = -EIO; /* bad smb */ |
1098 | goto psx_create_err; | |
1099 | } | |
1100 | ||
1101 | /* copy return information to pRetData */ | |
50c2f753 | 1102 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1103 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1104 | |
2dd29d31 | 1105 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1106 | if (netfid) |
2dd29d31 SF |
1107 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1108 | /* Let caller know file was created so we can set the mode. */ | |
1109 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1110 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1111 | *pOplock |= CIFS_CREATE_ACTION; |
1112 | /* check to make sure response data is there */ | |
8f2376ad CG |
1113 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1114 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1115 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1116 | } else { |
820a803f | 1117 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1118 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1119 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1120 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1121 | goto psx_create_err; |
1122 | } | |
50c2f753 | 1123 | memcpy((char *) pRetData, |
cbac3cba | 1124 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1125 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1126 | } |
2dd29d31 SF |
1127 | |
1128 | psx_create_err: | |
1129 | cifs_buf_release(pSMB); | |
1130 | ||
65bc98b0 | 1131 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1132 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1133 | else |
44c58186 | 1134 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1135 | |
1136 | if (rc == -EAGAIN) | |
1137 | goto PsxCreat; | |
1138 | ||
50c2f753 | 1139 | return rc; |
2dd29d31 SF |
1140 | } |
1141 | ||
a9d02ad4 SF |
1142 | static __u16 convert_disposition(int disposition) |
1143 | { | |
1144 | __u16 ofun = 0; | |
1145 | ||
1146 | switch (disposition) { | |
1147 | case FILE_SUPERSEDE: | |
1148 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1149 | break; | |
1150 | case FILE_OPEN: | |
1151 | ofun = SMBOPEN_OAPPEND; | |
1152 | break; | |
1153 | case FILE_CREATE: | |
1154 | ofun = SMBOPEN_OCREATE; | |
1155 | break; | |
1156 | case FILE_OPEN_IF: | |
1157 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1158 | break; | |
1159 | case FILE_OVERWRITE: | |
1160 | ofun = SMBOPEN_OTRUNC; | |
1161 | break; | |
1162 | case FILE_OVERWRITE_IF: | |
1163 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1164 | break; | |
1165 | default: | |
f96637be | 1166 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1167 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1168 | } | |
1169 | return ofun; | |
1170 | } | |
1171 | ||
35fc37d5 JL |
1172 | static int |
1173 | access_flags_to_smbopen_mode(const int access_flags) | |
1174 | { | |
1175 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1176 | ||
1177 | if (masked_flags == GENERIC_READ) | |
1178 | return SMBOPEN_READ; | |
1179 | else if (masked_flags == GENERIC_WRITE) | |
1180 | return SMBOPEN_WRITE; | |
1181 | ||
1182 | /* just go for read/write */ | |
1183 | return SMBOPEN_READWRITE; | |
1184 | } | |
1185 | ||
a9d02ad4 | 1186 | int |
6d5786a3 | 1187 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1188 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1189 | const int access_flags, const int create_options, __u16 *netfid, |
1190 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1191 | const struct nls_table *nls_codepage, int remap) |
1192 | { | |
1193 | int rc = -EACCES; | |
1194 | OPENX_REQ *pSMB = NULL; | |
1195 | OPENX_RSP *pSMBr = NULL; | |
1196 | int bytes_returned; | |
1197 | int name_len; | |
1198 | __u16 count; | |
1199 | ||
1200 | OldOpenRetry: | |
1201 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1202 | (void **) &pSMBr); | |
1203 | if (rc) | |
1204 | return rc; | |
1205 | ||
1206 | pSMB->AndXCommand = 0xFF; /* none */ | |
1207 | ||
1208 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1209 | count = 1; /* account for one byte pad to word boundary */ | |
1210 | name_len = | |
acbbb76a SF |
1211 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1212 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1213 | name_len++; /* trailing null */ |
1214 | name_len *= 2; | |
1215 | } else { /* BB improve check for buffer overruns BB */ | |
1216 | count = 0; /* no pad */ | |
1217 | name_len = strnlen(fileName, PATH_MAX); | |
1218 | name_len++; /* trailing null */ | |
1219 | strncpy(pSMB->fileName, fileName, name_len); | |
1220 | } | |
1221 | if (*pOplock & REQ_OPLOCK) | |
1222 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1223 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1224 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1225 | |
a9d02ad4 | 1226 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1227 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1228 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1229 | /* set file as system file if special file such | |
1230 | as fifo and server expecting SFU style and | |
1231 | no Unix extensions */ | |
1232 | ||
790fe579 SF |
1233 | if (create_options & CREATE_OPTION_SPECIAL) |
1234 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1235 | else /* BB FIXME BB */ |
1236 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1237 | |
67750fb9 JL |
1238 | if (create_options & CREATE_OPTION_READONLY) |
1239 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1240 | |
1241 | /* BB FIXME BB */ | |
50c2f753 SF |
1242 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1243 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1244 | /* BB FIXME END BB */ |
3e87d803 SF |
1245 | |
1246 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1247 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1248 | count += name_len; |
be8e3b00 | 1249 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1250 | |
1251 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1252 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1253 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1254 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1255 | if (rc) { |
f96637be | 1256 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1257 | } else { |
1258 | /* BB verify if wct == 15 */ | |
1259 | ||
582d21e5 | 1260 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1261 | |
1262 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1263 | /* Let caller know file was created so we can set the mode. */ | |
1264 | /* Do we care about the CreateAction in any other cases? */ | |
1265 | /* BB FIXME BB */ | |
790fe579 | 1266 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1267 | *pOplock |= CIFS_CREATE_ACTION; */ |
1268 | /* BB FIXME END */ | |
1269 | ||
790fe579 | 1270 | if (pfile_info) { |
a9d02ad4 SF |
1271 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1272 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1273 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1274 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1275 | pfile_info->Attributes = |
50c2f753 | 1276 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1277 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1278 | pfile_info->AllocationSize = |
1279 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1280 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1281 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1282 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1283 | } |
1284 | } | |
1285 | ||
1286 | cifs_buf_release(pSMB); | |
1287 | if (rc == -EAGAIN) | |
1288 | goto OldOpenRetry; | |
1289 | return rc; | |
1290 | } | |
1291 | ||
1da177e4 | 1292 | int |
d81b8a40 PS |
1293 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1294 | FILE_ALL_INFO *buf) | |
1da177e4 LT |
1295 | { |
1296 | int rc = -EACCES; | |
9bf4fa01 PS |
1297 | OPEN_REQ *req = NULL; |
1298 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1299 | int bytes_returned; |
1300 | int name_len; | |
1301 | __u16 count; | |
d81b8a40 PS |
1302 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1303 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1304 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1305 | const struct nls_table *nls = cifs_sb->local_nls; |
1306 | int create_options = oparms->create_options; | |
1307 | int desired_access = oparms->desired_access; | |
1308 | int disposition = oparms->disposition; | |
1309 | const char *path = oparms->path; | |
1da177e4 LT |
1310 | |
1311 | openRetry: | |
9bf4fa01 PS |
1312 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1313 | (void **)&rsp); | |
1da177e4 LT |
1314 | if (rc) |
1315 | return rc; | |
1316 | ||
9bf4fa01 PS |
1317 | /* no commands go after this */ |
1318 | req->AndXCommand = 0xFF; | |
1da177e4 | 1319 | |
9bf4fa01 PS |
1320 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1321 | /* account for one byte pad to word boundary */ | |
1322 | count = 1; | |
1323 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1324 | path, PATH_MAX, nls, remap); | |
1325 | /* trailing null */ | |
1326 | name_len++; | |
1da177e4 | 1327 | name_len *= 2; |
9bf4fa01 PS |
1328 | req->NameLength = cpu_to_le16(name_len); |
1329 | } else { | |
1330 | /* BB improve check for buffer overruns BB */ | |
1331 | /* no pad */ | |
1332 | count = 0; | |
1333 | name_len = strnlen(path, PATH_MAX); | |
1334 | /* trailing null */ | |
1335 | name_len++; | |
1336 | req->NameLength = cpu_to_le16(name_len); | |
1337 | strncpy(req->fileName, path, name_len); | |
1da177e4 | 1338 | } |
9bf4fa01 PS |
1339 | |
1340 | if (*oplock & REQ_OPLOCK) | |
1341 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1342 | else if (*oplock & REQ_BATCHOPLOCK) | |
1343 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1344 | ||
1345 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1346 | req->AllocationSize = 0; | |
1347 | ||
1348 | /* | |
1349 | * Set file as system file if special file such as fifo and server | |
1350 | * expecting SFU style and no Unix extensions. | |
1351 | */ | |
790fe579 | 1352 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1353 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1354 | else |
9bf4fa01 | 1355 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1356 | |
9bf4fa01 PS |
1357 | /* |
1358 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1359 | * sensitive checks for other servers such as Samba. | |
1360 | */ | |
1da177e4 | 1361 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1362 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1363 | |
67750fb9 | 1364 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1365 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1366 | ||
1367 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1368 | req->CreateDisposition = cpu_to_le32(disposition); | |
1369 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1370 | |
09d1db5c | 1371 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1372 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1373 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1374 | |
1375 | count += name_len; | |
9bf4fa01 | 1376 | inc_rfc1001_len(req, count); |
1da177e4 | 1377 | |
9bf4fa01 PS |
1378 | req->ByteCount = cpu_to_le16(count); |
1379 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1380 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1381 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1382 | if (rc) { |
f96637be | 1383 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1384 | cifs_buf_release(req); |
1385 | if (rc == -EAGAIN) | |
1386 | goto openRetry; | |
1387 | return rc; | |
1da177e4 | 1388 | } |
a5a2b489 | 1389 | |
9bf4fa01 PS |
1390 | /* 1 byte no need to le_to_cpu */ |
1391 | *oplock = rsp->OplockLevel; | |
1392 | /* cifs fid stays in le */ | |
d81b8a40 | 1393 | oparms->fid->netfid = rsp->Fid; |
9bf4fa01 PS |
1394 | |
1395 | /* Let caller know file was created so we can set the mode. */ | |
1396 | /* Do we care about the CreateAction in any other cases? */ | |
1397 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1398 | *oplock |= CIFS_CREATE_ACTION; | |
1399 | ||
1400 | if (buf) { | |
1401 | /* copy from CreationTime to Attributes */ | |
1402 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1403 | /* the file_info buf is endian converted by caller */ | |
1404 | buf->AllocationSize = rsp->AllocationSize; | |
1405 | buf->EndOfFile = rsp->EndOfFile; | |
1406 | buf->NumberOfLinks = cpu_to_le32(1); | |
1407 | buf->DeletePending = 0; | |
1408 | } | |
1409 | ||
1410 | cifs_buf_release(req); | |
1da177e4 LT |
1411 | return rc; |
1412 | } | |
1413 | ||
e28bc5b1 JL |
1414 | /* |
1415 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1416 | * current bigbuf. | |
1417 | */ | |
c42a6abe | 1418 | int |
350be257 | 1419 | cifs_discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1420 | { |
05432e29 RS |
1421 | unsigned int rfclen = server->pdu_size; |
1422 | int remaining = rfclen + server->vals->header_preamble_size - | |
1423 | server->total_read; | |
e28bc5b1 JL |
1424 | |
1425 | while (remaining > 0) { | |
1426 | int length; | |
1427 | ||
1428 | length = cifs_read_from_socket(server, server->bigbuf, | |
1429 | min_t(unsigned int, remaining, | |
1887f601 | 1430 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1431 | if (length < 0) |
1432 | return length; | |
1433 | server->total_read += length; | |
1434 | remaining -= length; | |
1435 | } | |
1436 | ||
e28bc5b1 JL |
1437 | return 0; |
1438 | } | |
1439 | ||
6cc3b242 PS |
1440 | static int |
1441 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1442 | { | |
1443 | int length; | |
1444 | struct cifs_readdata *rdata = mid->callback_data; | |
1445 | ||
350be257 | 1446 | length = cifs_discard_remaining_data(server); |
6cc3b242 | 1447 | dequeue_mid(mid, rdata->result); |
350be257 PS |
1448 | mid->resp_buf = server->smallbuf; |
1449 | server->smallbuf = NULL; | |
6cc3b242 PS |
1450 | return length; |
1451 | } | |
1452 | ||
09a4707e | 1453 | int |
e28bc5b1 JL |
1454 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1455 | { | |
1456 | int length, len; | |
8d5ce4d2 | 1457 | unsigned int data_offset, data_len; |
e28bc5b1 | 1458 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf | 1459 | char *buf = server->smallbuf; |
2e96467d | 1460 | unsigned int buflen = server->pdu_size + |
93012bf9 | 1461 | server->vals->header_preamble_size; |
74dcf418 | 1462 | bool use_rdma_mr = false; |
e28bc5b1 | 1463 | |
f96637be JP |
1464 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1465 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1466 | |
1467 | /* | |
1468 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1469 | * can if there's not enough data. At this point, we've read down to | |
1470 | * the Mid. | |
1471 | */ | |
eb378711 | 1472 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1473 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1474 | |
a6137305 AV |
1475 | length = cifs_read_from_socket(server, |
1476 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1477 | if (length < 0) |
1478 | return length; | |
1479 | server->total_read += length; | |
1480 | ||
511c54a2 PS |
1481 | if (server->ops->is_session_expired && |
1482 | server->ops->is_session_expired(buf)) { | |
1483 | cifs_reconnect(server); | |
1484 | wake_up(&server->response_q); | |
1485 | return -1; | |
1486 | } | |
1487 | ||
6cc3b242 PS |
1488 | if (server->ops->is_status_pending && |
1489 | server->ops->is_status_pending(buf, server, 0)) { | |
350be257 | 1490 | cifs_discard_remaining_data(server); |
6cc3b242 PS |
1491 | return -1; |
1492 | } | |
1493 | ||
e28bc5b1 | 1494 | /* Was the SMB read successful? */ |
eb378711 | 1495 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1496 | if (rdata->result != 0) { |
f96637be JP |
1497 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1498 | __func__, rdata->result); | |
e28bc5b1 JL |
1499 | return cifs_readv_discard(server, mid); |
1500 | } | |
1501 | ||
1502 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1503 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1504 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1505 | __func__, server->total_read, | |
1506 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1507 | rdata->result = -EIO; |
1508 | return cifs_readv_discard(server, mid); | |
1509 | } | |
1510 | ||
93012bf9 RS |
1511 | data_offset = server->ops->read_data_offset(buf) + |
1512 | server->vals->header_preamble_size; | |
e28bc5b1 JL |
1513 | if (data_offset < server->total_read) { |
1514 | /* | |
1515 | * win2k8 sometimes sends an offset of 0 when the read | |
1516 | * is beyond the EOF. Treat it as if the data starts just after | |
1517 | * the header. | |
1518 | */ | |
f96637be JP |
1519 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1520 | __func__, data_offset); | |
e28bc5b1 JL |
1521 | data_offset = server->total_read; |
1522 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1523 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1524 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1525 | __func__, data_offset); | |
e28bc5b1 JL |
1526 | rdata->result = -EIO; |
1527 | return cifs_readv_discard(server, mid); | |
1528 | } | |
1529 | ||
f96637be JP |
1530 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1531 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1532 | |
1533 | len = data_offset - server->total_read; | |
1534 | if (len > 0) { | |
1535 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1536 | length = cifs_read_from_socket(server, |
1537 | buf + server->total_read, len); | |
e28bc5b1 JL |
1538 | if (length < 0) |
1539 | return length; | |
1540 | server->total_read += length; | |
1541 | } | |
1542 | ||
1543 | /* set up first iov for signature check */ | |
738f9de5 PS |
1544 | rdata->iov[0].iov_base = buf; |
1545 | rdata->iov[0].iov_len = 4; | |
1546 | rdata->iov[1].iov_base = buf + 4; | |
1547 | rdata->iov[1].iov_len = server->total_read - 4; | |
1548 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n", | |
1549 | rdata->iov[0].iov_base, server->total_read); | |
e28bc5b1 JL |
1550 | |
1551 | /* how much data is in the response? */ | |
74dcf418 LL |
1552 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1553 | use_rdma_mr = rdata->mr; | |
1554 | #endif | |
1555 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
1556 | if (!use_rdma_mr && (data_offset + data_len > buflen)) { | |
e28bc5b1 JL |
1557 | /* data_len is corrupt -- discard frame */ |
1558 | rdata->result = -EIO; | |
1559 | return cifs_readv_discard(server, mid); | |
1560 | } | |
1561 | ||
8321fec4 JL |
1562 | length = rdata->read_into_pages(server, rdata, data_len); |
1563 | if (length < 0) | |
1564 | return length; | |
e28bc5b1 | 1565 | |
8321fec4 | 1566 | server->total_read += length; |
e28bc5b1 | 1567 | |
f96637be JP |
1568 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1569 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1570 | |
1571 | /* discard anything left over */ | |
5ffef7bf | 1572 | if (server->total_read < buflen) |
e28bc5b1 JL |
1573 | return cifs_readv_discard(server, mid); |
1574 | ||
1575 | dequeue_mid(mid, false); | |
350be257 PS |
1576 | mid->resp_buf = server->smallbuf; |
1577 | server->smallbuf = NULL; | |
e28bc5b1 JL |
1578 | return length; |
1579 | } | |
1580 | ||
e28bc5b1 JL |
1581 | static void |
1582 | cifs_readv_callback(struct mid_q_entry *mid) | |
1583 | { | |
1584 | struct cifs_readdata *rdata = mid->callback_data; | |
1585 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1586 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1587 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1588 | .rq_nvec = 2, | |
8321fec4 JL |
1589 | .rq_pages = rdata->pages, |
1590 | .rq_npages = rdata->nr_pages, | |
1591 | .rq_pagesz = rdata->pagesz, | |
1592 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1593 | |
f96637be JP |
1594 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1595 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1596 | rdata->bytes); | |
e28bc5b1 | 1597 | |
7c9421e1 | 1598 | switch (mid->mid_state) { |
e28bc5b1 JL |
1599 | case MID_RESPONSE_RECEIVED: |
1600 | /* result already set, check signature */ | |
38d77c50 | 1601 | if (server->sign) { |
985e4ff0 SF |
1602 | int rc = 0; |
1603 | ||
bf5ea0e2 | 1604 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1605 | mid->sequence_number); |
985e4ff0 | 1606 | if (rc) |
f96637be JP |
1607 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1608 | rc); | |
e28bc5b1 JL |
1609 | } |
1610 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1611 | task_io_account_read(rdata->got_bytes); |
1612 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1613 | break; |
1614 | case MID_REQUEST_SUBMITTED: | |
1615 | case MID_RETRY_NEEDED: | |
1616 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1617 | if (server->sign && rdata->got_bytes) |
1618 | /* reset bytes number since we can not check a sign */ | |
1619 | rdata->got_bytes = 0; | |
1620 | /* FIXME: should this be counted toward the initiating task? */ | |
1621 | task_io_account_read(rdata->got_bytes); | |
1622 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1623 | break; |
1624 | default: | |
1625 | rdata->result = -EIO; | |
1626 | } | |
1627 | ||
da472fc8 | 1628 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1629 | DeleteMidQEntry(mid); |
a891f0f8 | 1630 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1631 | } |
1632 | ||
1633 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1634 | int | |
1635 | cifs_async_readv(struct cifs_readdata *rdata) | |
1636 | { | |
1637 | int rc; | |
1638 | READ_REQ *smb = NULL; | |
1639 | int wct; | |
1640 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1641 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1642 | .rq_nvec = 2 }; | |
e28bc5b1 | 1643 | |
f96637be JP |
1644 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1645 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1646 | |
1647 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1648 | wct = 12; | |
1649 | else { | |
1650 | wct = 10; /* old style read */ | |
1651 | if ((rdata->offset >> 32) > 0) { | |
1652 | /* can not handle this big offset for old */ | |
1653 | return -EIO; | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1658 | if (rc) | |
1659 | return rc; | |
1660 | ||
1661 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1662 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1663 | ||
1664 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1665 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1666 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1667 | if (wct == 12) | |
1668 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1669 | smb->Remaining = 0; | |
1670 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1671 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1672 | if (wct == 12) | |
1673 | smb->ByteCount = 0; | |
1674 | else { | |
1675 | /* old style read */ | |
1676 | struct smb_com_readx_req *smbr = | |
1677 | (struct smb_com_readx_req *)smb; | |
1678 | smbr->ByteCount = 0; | |
1679 | } | |
1680 | ||
1681 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1682 | rdata->iov[0].iov_base = smb; |
1683 | rdata->iov[0].iov_len = 4; | |
1684 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1685 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1686 | |
6993f74a | 1687 | kref_get(&rdata->refcount); |
fec344e3 | 1688 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
9b7c18a2 | 1689 | cifs_readv_callback, NULL, rdata, 0); |
e28bc5b1 JL |
1690 | |
1691 | if (rc == 0) | |
44c58186 | 1692 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1693 | else |
1694 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1695 | |
1696 | cifs_small_buf_release(smb); | |
1697 | return rc; | |
1698 | } | |
1699 | ||
1da177e4 | 1700 | int |
6d5786a3 PS |
1701 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1702 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1703 | { |
1704 | int rc = -EACCES; | |
1705 | READ_REQ *pSMB = NULL; | |
1706 | READ_RSP *pSMBr = NULL; | |
1707 | char *pReadData = NULL; | |
bfa0d75a | 1708 | int wct; |
ec637e3f SF |
1709 | int resp_buf_type = 0; |
1710 | struct kvec iov[1]; | |
da502f7d | 1711 | struct kvec rsp_iov; |
d4ffff1f PS |
1712 | __u32 pid = io_parms->pid; |
1713 | __u16 netfid = io_parms->netfid; | |
1714 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1715 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1716 | unsigned int count = io_parms->length; |
1da177e4 | 1717 | |
f96637be | 1718 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1719 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1720 | wct = 12; |
4c3130ef | 1721 | else { |
bfa0d75a | 1722 | wct = 10; /* old style read */ |
d4ffff1f | 1723 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1724 | /* can not handle this big offset for old */ |
1725 | return -EIO; | |
1726 | } | |
1727 | } | |
1da177e4 LT |
1728 | |
1729 | *nbytes = 0; | |
ec637e3f | 1730 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1731 | if (rc) |
1732 | return rc; | |
1733 | ||
d4ffff1f PS |
1734 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1735 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1736 | ||
1da177e4 LT |
1737 | /* tcon and ses pointer are checked in smb_init */ |
1738 | if (tcon->ses->server == NULL) | |
1739 | return -ECONNABORTED; | |
1740 | ||
ec637e3f | 1741 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1742 | pSMB->Fid = netfid; |
d4ffff1f | 1743 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1744 | if (wct == 12) |
d4ffff1f | 1745 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1746 | |
1da177e4 LT |
1747 | pSMB->Remaining = 0; |
1748 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1749 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1750 | if (wct == 12) |
bfa0d75a SF |
1751 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1752 | else { | |
1753 | /* old style read */ | |
50c2f753 | 1754 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1755 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1756 | pSMBW->ByteCount = 0; |
bfa0d75a | 1757 | } |
ec637e3f SF |
1758 | |
1759 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1760 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1761 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1762 | CIFS_LOG_ERROR, &rsp_iov); | |
1763 | cifs_small_buf_release(pSMB); | |
44c58186 | 1764 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1765 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1766 | if (rc) { |
f96637be | 1767 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1768 | } else { |
1769 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1770 | data_length = data_length << 16; | |
1771 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1772 | *nbytes = data_length; | |
1773 | ||
1774 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1775 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1776 | || (data_length > count)) { |
f96637be | 1777 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1778 | data_length, count); |
1da177e4 LT |
1779 | rc = -EIO; |
1780 | *nbytes = 0; | |
1781 | } else { | |
ec637e3f | 1782 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1783 | le16_to_cpu(pSMBr->DataOffset); |
1784 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1785 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1786 | rc = -EFAULT; |
26f57364 | 1787 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1788 | if (*buf) |
50c2f753 | 1789 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1790 | } |
1791 | } | |
1da177e4 | 1792 | |
790fe579 | 1793 | if (*buf) { |
da502f7d | 1794 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1795 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1796 | /* return buffer to caller to free */ |
da502f7d | 1797 | *buf = rsp_iov.iov_base; |
790fe579 | 1798 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1799 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1800 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1801 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1802 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1803 | |
1804 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1805 | since file handle passed in no longer valid */ |
1806 | return rc; | |
1807 | } | |
1808 | ||
ec637e3f | 1809 | |
1da177e4 | 1810 | int |
6d5786a3 | 1811 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1812 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1813 | { |
1814 | int rc = -EACCES; | |
1815 | WRITE_REQ *pSMB = NULL; | |
1816 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1817 | int bytes_returned, wct; |
1da177e4 LT |
1818 | __u32 bytes_sent; |
1819 | __u16 byte_count; | |
fa2989f4 PS |
1820 | __u32 pid = io_parms->pid; |
1821 | __u16 netfid = io_parms->netfid; | |
1822 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1823 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1824 | unsigned int count = io_parms->length; |
1da177e4 | 1825 | |
a24e2d7d SF |
1826 | *nbytes = 0; |
1827 | ||
f96637be | 1828 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1829 | if (tcon->ses == NULL) |
1c955187 SF |
1830 | return -ECONNABORTED; |
1831 | ||
790fe579 | 1832 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1833 | wct = 14; |
4c3130ef | 1834 | else { |
1c955187 | 1835 | wct = 12; |
4c3130ef SF |
1836 | if ((offset >> 32) > 0) { |
1837 | /* can not handle big offset for old srv */ | |
1838 | return -EIO; | |
1839 | } | |
1840 | } | |
1c955187 SF |
1841 | |
1842 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1843 | (void **) &pSMBr); |
1844 | if (rc) | |
1845 | return rc; | |
fa2989f4 PS |
1846 | |
1847 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1848 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1849 | ||
1da177e4 LT |
1850 | /* tcon and ses pointer are checked in smb_init */ |
1851 | if (tcon->ses->server == NULL) | |
1852 | return -ECONNABORTED; | |
1853 | ||
1854 | pSMB->AndXCommand = 0xFF; /* none */ | |
1855 | pSMB->Fid = netfid; | |
1856 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1857 | if (wct == 14) |
1c955187 | 1858 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1859 | |
1da177e4 LT |
1860 | pSMB->Reserved = 0xFFFFFFFF; |
1861 | pSMB->WriteMode = 0; | |
1862 | pSMB->Remaining = 0; | |
1863 | ||
50c2f753 | 1864 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1865 | can send more if LARGE_WRITE_X capability returned by the server and if |
1866 | our buffer is big enough or if we convert to iovecs on socket writes | |
1867 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1868 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1869 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1870 | } else { | |
1871 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1872 | & ~0xFF; | |
1873 | } | |
1874 | ||
1875 | if (bytes_sent > count) | |
1876 | bytes_sent = count; | |
1877 | pSMB->DataOffset = | |
50c2f753 | 1878 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1879 | if (buf) |
61e74801 | 1880 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1881 | else if (count != 0) { |
1da177e4 LT |
1882 | /* No buffer */ |
1883 | cifs_buf_release(pSMB); | |
1884 | return -EINVAL; | |
e30dcf3a | 1885 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1886 | if (wct == 14) |
e30dcf3a | 1887 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1888 | else /* wct == 12 */ |
e30dcf3a | 1889 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1890 | |
1da177e4 LT |
1891 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1892 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1893 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1894 | |
790fe579 | 1895 | if (wct == 14) |
1c955187 | 1896 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1897 | else { /* old style write has byte count 4 bytes earlier |
1898 | so 4 bytes pad */ | |
1899 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1900 | (struct smb_com_writex_req *)pSMB; |
1901 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1902 | } | |
1da177e4 LT |
1903 | |
1904 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1905 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1906 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1907 | if (rc) { |
f96637be | 1908 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1909 | } else { |
1910 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1911 | *nbytes = (*nbytes) << 16; | |
1912 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1913 | |
1914 | /* | |
1915 | * Mask off high 16 bits when bytes written as returned by the | |
1916 | * server is greater than bytes requested by the client. Some | |
1917 | * OS/2 servers are known to set incorrect CountHigh values. | |
1918 | */ | |
1919 | if (*nbytes > count) | |
1920 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1921 | } |
1922 | ||
1923 | cifs_buf_release(pSMB); | |
1924 | ||
50c2f753 | 1925 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1926 | since file handle passed in no longer valid */ |
1927 | ||
1928 | return rc; | |
1929 | } | |
1930 | ||
c28c89fc JL |
1931 | void |
1932 | cifs_writedata_release(struct kref *refcount) | |
1933 | { | |
1934 | struct cifs_writedata *wdata = container_of(refcount, | |
1935 | struct cifs_writedata, refcount); | |
db223a59 LL |
1936 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1937 | if (wdata->mr) { | |
1938 | smbd_deregister_mr(wdata->mr); | |
1939 | wdata->mr = NULL; | |
1940 | } | |
1941 | #endif | |
c28c89fc JL |
1942 | |
1943 | if (wdata->cfile) | |
1944 | cifsFileInfo_put(wdata->cfile); | |
1945 | ||
1946 | kfree(wdata); | |
1947 | } | |
1948 | ||
1949 | /* | |
1950 | * Write failed with a retryable error. Resend the write request. It's also | |
1951 | * possible that the page was redirtied so re-clean the page. | |
1952 | */ | |
1953 | static void | |
1954 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1955 | { | |
7f6c5008 | 1956 | int i, rc = 0; |
2b0143b5 | 1957 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 1958 | struct TCP_Server_Info *server; |
7f6c5008 | 1959 | unsigned int rest_len; |
c28c89fc | 1960 | |
7f6c5008 PS |
1961 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1962 | i = 0; | |
1963 | rest_len = wdata->bytes; | |
c28c89fc | 1964 | do { |
7f6c5008 PS |
1965 | struct cifs_writedata *wdata2; |
1966 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
1967 | ||
1968 | wsize = server->ops->wp_retry_size(inode); | |
1969 | if (wsize < rest_len) { | |
09cbfeaf | 1970 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
1971 | if (!nr_pages) { |
1972 | rc = -ENOTSUPP; | |
1973 | break; | |
1974 | } | |
09cbfeaf KS |
1975 | cur_len = nr_pages * PAGE_SIZE; |
1976 | tailsz = PAGE_SIZE; | |
7f6c5008 | 1977 | } else { |
09cbfeaf | 1978 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 1979 | cur_len = rest_len; |
09cbfeaf | 1980 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 1981 | } |
c28c89fc | 1982 | |
7f6c5008 PS |
1983 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
1984 | if (!wdata2) { | |
1985 | rc = -ENOMEM; | |
1986 | break; | |
c51bb0ea | 1987 | } |
7f6c5008 PS |
1988 | |
1989 | for (j = 0; j < nr_pages; j++) { | |
1990 | wdata2->pages[j] = wdata->pages[i + j]; | |
1991 | lock_page(wdata2->pages[j]); | |
1992 | clear_page_dirty_for_io(wdata2->pages[j]); | |
1993 | } | |
1994 | ||
1995 | wdata2->sync_mode = wdata->sync_mode; | |
1996 | wdata2->nr_pages = nr_pages; | |
1997 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 1998 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
1999 | wdata2->tailsz = tailsz; |
2000 | wdata2->bytes = cur_len; | |
2001 | ||
2002 | wdata2->cfile = find_writable_file(CIFS_I(inode), false); | |
2003 | if (!wdata2->cfile) { | |
2004 | cifs_dbg(VFS, "No writable handles for inode\n"); | |
2005 | rc = -EBADF; | |
2006 | break; | |
2007 | } | |
2008 | wdata2->pid = wdata2->cfile->pid; | |
2009 | rc = server->ops->async_writev(wdata2, cifs_writedata_release); | |
2010 | ||
2011 | for (j = 0; j < nr_pages; j++) { | |
2012 | unlock_page(wdata2->pages[j]); | |
2013 | if (rc != 0 && rc != -EAGAIN) { | |
2014 | SetPageError(wdata2->pages[j]); | |
2015 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 2016 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
2017 | } |
2018 | } | |
2019 | ||
2020 | if (rc) { | |
2021 | kref_put(&wdata2->refcount, cifs_writedata_release); | |
2022 | if (rc == -EAGAIN) | |
2023 | continue; | |
2024 | break; | |
2025 | } | |
2026 | ||
2027 | rest_len -= cur_len; | |
2028 | i += nr_pages; | |
2029 | } while (i < wdata->nr_pages); | |
c28c89fc JL |
2030 | |
2031 | mapping_set_error(inode->i_mapping, rc); | |
2032 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2033 | } | |
2034 | ||
c2e87640 | 2035 | void |
c28c89fc JL |
2036 | cifs_writev_complete(struct work_struct *work) |
2037 | { | |
2038 | struct cifs_writedata *wdata = container_of(work, | |
2039 | struct cifs_writedata, work); | |
2b0143b5 | 2040 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
2041 | int i = 0; |
2042 | ||
2043 | if (wdata->result == 0) { | |
597b027f | 2044 | spin_lock(&inode->i_lock); |
c28c89fc | 2045 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2046 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2047 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2048 | wdata->bytes); | |
2049 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2050 | return cifs_writev_requeue(wdata); | |
2051 | ||
2052 | for (i = 0; i < wdata->nr_pages; i++) { | |
2053 | struct page *page = wdata->pages[i]; | |
2054 | if (wdata->result == -EAGAIN) | |
2055 | __set_page_dirty_nobuffers(page); | |
2056 | else if (wdata->result < 0) | |
2057 | SetPageError(page); | |
2058 | end_page_writeback(page); | |
09cbfeaf | 2059 | put_page(page); |
c28c89fc JL |
2060 | } |
2061 | if (wdata->result != -EAGAIN) | |
2062 | mapping_set_error(inode->i_mapping, wdata->result); | |
2063 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2064 | } | |
2065 | ||
2066 | struct cifs_writedata * | |
c2e87640 | 2067 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
2068 | { |
2069 | struct cifs_writedata *wdata; | |
2070 | ||
c28c89fc JL |
2071 | /* writedata + number of page pointers */ |
2072 | wdata = kzalloc(sizeof(*wdata) + | |
26c8f0d6 | 2073 | sizeof(struct page *) * nr_pages, GFP_NOFS); |
c28c89fc | 2074 | if (wdata != NULL) { |
c28c89fc | 2075 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2076 | INIT_LIST_HEAD(&wdata->list); |
2077 | init_completion(&wdata->done); | |
2078 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2079 | } |
2080 | return wdata; | |
2081 | } | |
2082 | ||
2083 | /* | |
7c9421e1 | 2084 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2085 | * workqueue completion task. |
2086 | */ | |
2087 | static void | |
2088 | cifs_writev_callback(struct mid_q_entry *mid) | |
2089 | { | |
2090 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2091 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2092 | unsigned int written; |
2093 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2094 | ||
7c9421e1 | 2095 | switch (mid->mid_state) { |
c28c89fc JL |
2096 | case MID_RESPONSE_RECEIVED: |
2097 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2098 | if (wdata->result != 0) | |
2099 | break; | |
2100 | ||
2101 | written = le16_to_cpu(smb->CountHigh); | |
2102 | written <<= 16; | |
2103 | written += le16_to_cpu(smb->Count); | |
2104 | /* | |
2105 | * Mask off high 16 bits when bytes written as returned | |
2106 | * by the server is greater than bytes requested by the | |
2107 | * client. OS/2 servers are known to set incorrect | |
2108 | * CountHigh values. | |
2109 | */ | |
2110 | if (written > wdata->bytes) | |
2111 | written &= 0xFFFF; | |
2112 | ||
2113 | if (written < wdata->bytes) | |
2114 | wdata->result = -ENOSPC; | |
2115 | else | |
2116 | wdata->bytes = written; | |
2117 | break; | |
2118 | case MID_REQUEST_SUBMITTED: | |
2119 | case MID_RETRY_NEEDED: | |
2120 | wdata->result = -EAGAIN; | |
2121 | break; | |
2122 | default: | |
2123 | wdata->result = -EIO; | |
2124 | break; | |
2125 | } | |
2126 | ||
da472fc8 | 2127 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2128 | DeleteMidQEntry(mid); |
a891f0f8 | 2129 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2130 | } |
2131 | ||
2132 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2133 | int | |
4a5c80d7 SF |
2134 | cifs_async_writev(struct cifs_writedata *wdata, |
2135 | void (*release)(struct kref *kref)) | |
c28c89fc | 2136 | { |
eddb079d | 2137 | int rc = -EACCES; |
c28c89fc JL |
2138 | WRITE_REQ *smb = NULL; |
2139 | int wct; | |
96daf2b0 | 2140 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 2141 | struct kvec iov[2]; |
fec344e3 | 2142 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2143 | |
2144 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2145 | wct = 14; | |
2146 | } else { | |
2147 | wct = 12; | |
2148 | if (wdata->offset >> 32 > 0) { | |
2149 | /* can not handle big offset for old srv */ | |
2150 | return -EIO; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2155 | if (rc) | |
2156 | goto async_writev_out; | |
2157 | ||
fe5f5d2e JL |
2158 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2159 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2160 | |
c28c89fc | 2161 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2162 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2163 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2164 | if (wct == 14) | |
2165 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2166 | smb->Reserved = 0xFFFFFFFF; | |
2167 | smb->WriteMode = 0; | |
2168 | smb->Remaining = 0; | |
2169 | ||
2170 | smb->DataOffset = | |
2171 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2172 | ||
2173 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
2174 | iov[0].iov_len = 4; |
2175 | iov[0].iov_base = smb; | |
2176 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
2177 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 2178 | |
738f9de5 PS |
2179 | rqst.rq_iov = iov; |
2180 | rqst.rq_nvec = 2; | |
eddb079d JL |
2181 | rqst.rq_pages = wdata->pages; |
2182 | rqst.rq_npages = wdata->nr_pages; | |
2183 | rqst.rq_pagesz = wdata->pagesz; | |
2184 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2185 | |
f96637be JP |
2186 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2187 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2188 | |
2189 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2190 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2191 | ||
2192 | if (wct == 14) { | |
2193 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2194 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2195 | } else { | |
2196 | /* wct == 12 */ | |
2197 | struct smb_com_writex_req *smbw = | |
2198 | (struct smb_com_writex_req *)smb; | |
2199 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2200 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 2201 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2202 | } |
2203 | ||
2204 | kref_get(&wdata->refcount); | |
fec344e3 | 2205 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
9b7c18a2 | 2206 | cifs_writev_callback, NULL, wdata, 0); |
c28c89fc JL |
2207 | |
2208 | if (rc == 0) | |
44c58186 | 2209 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2210 | else |
4a5c80d7 | 2211 | kref_put(&wdata->refcount, release); |
c28c89fc | 2212 | |
c28c89fc JL |
2213 | async_writev_out: |
2214 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2215 | return rc; |
2216 | } | |
2217 | ||
d6e04ae6 | 2218 | int |
6d5786a3 | 2219 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2220 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2221 | { |
2222 | int rc = -EACCES; | |
2223 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2224 | int wct; |
d6e04ae6 | 2225 | int smb_hdr_len; |
ec637e3f | 2226 | int resp_buf_type = 0; |
fa2989f4 PS |
2227 | __u32 pid = io_parms->pid; |
2228 | __u16 netfid = io_parms->netfid; | |
2229 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2230 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2231 | unsigned int count = io_parms->length; |
da502f7d | 2232 | struct kvec rsp_iov; |
1da177e4 | 2233 | |
fbec9ab9 JL |
2234 | *nbytes = 0; |
2235 | ||
f96637be | 2236 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2237 | |
4c3130ef | 2238 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2239 | wct = 14; |
4c3130ef | 2240 | } else { |
8cc64c6e | 2241 | wct = 12; |
4c3130ef SF |
2242 | if ((offset >> 32) > 0) { |
2243 | /* can not handle big offset for old srv */ | |
2244 | return -EIO; | |
2245 | } | |
2246 | } | |
8cc64c6e | 2247 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2248 | if (rc) |
2249 | return rc; | |
fa2989f4 PS |
2250 | |
2251 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2252 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2253 | ||
1da177e4 LT |
2254 | /* tcon and ses pointer are checked in smb_init */ |
2255 | if (tcon->ses->server == NULL) | |
2256 | return -ECONNABORTED; | |
2257 | ||
d6e04ae6 | 2258 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2259 | pSMB->Fid = netfid; |
2260 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2261 | if (wct == 14) |
8cc64c6e | 2262 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2263 | pSMB->Reserved = 0xFFFFFFFF; |
2264 | pSMB->WriteMode = 0; | |
2265 | pSMB->Remaining = 0; | |
d6e04ae6 | 2266 | |
1da177e4 | 2267 | pSMB->DataOffset = |
50c2f753 | 2268 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2269 | |
3e84469d SF |
2270 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2271 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2272 | /* header + 1 byte pad */ |
2273 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2274 | if (wct == 14) |
be8e3b00 | 2275 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2276 | else /* wct == 12 */ |
be8e3b00 | 2277 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2278 | if (wct == 14) |
8cc64c6e SF |
2279 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2280 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2281 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2282 | (struct smb_com_writex_req *)pSMB; |
2283 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2284 | } | |
3e84469d | 2285 | iov[0].iov_base = pSMB; |
790fe579 | 2286 | if (wct == 14) |
ec637e3f SF |
2287 | iov[0].iov_len = smb_hdr_len + 4; |
2288 | else /* wct == 12 pad bigger by four bytes */ | |
2289 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2290 | |
da502f7d PS |
2291 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
2292 | &rsp_iov); | |
2293 | cifs_small_buf_release(pSMB); | |
44c58186 | 2294 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2295 | if (rc) { |
f96637be | 2296 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2297 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2298 | /* presumably this can not happen, but best to be safe */ |
2299 | rc = -EIO; | |
d6e04ae6 | 2300 | } else { |
da502f7d | 2301 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
2302 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2303 | *nbytes = (*nbytes) << 16; | |
2304 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2305 | |
2306 | /* | |
2307 | * Mask off high 16 bits when bytes written as returned by the | |
2308 | * server is greater than bytes requested by the client. OS/2 | |
2309 | * servers are known to set incorrect CountHigh values. | |
2310 | */ | |
2311 | if (*nbytes > count) | |
2312 | *nbytes &= 0xFFFF; | |
50c2f753 | 2313 | } |
1da177e4 | 2314 | |
da502f7d | 2315 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 2316 | |
50c2f753 | 2317 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2318 | since file handle passed in no longer valid */ |
2319 | ||
2320 | return rc; | |
2321 | } | |
d6e04ae6 | 2322 | |
6d5786a3 PS |
2323 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2324 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2325 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2326 | { | |
2327 | int rc = 0; | |
2328 | LOCK_REQ *pSMB = NULL; | |
2329 | struct kvec iov[2]; | |
da502f7d | 2330 | struct kvec rsp_iov; |
9ee305b7 PS |
2331 | int resp_buf_type; |
2332 | __u16 count; | |
2333 | ||
f96637be JP |
2334 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2335 | num_lock, num_unlock); | |
9ee305b7 PS |
2336 | |
2337 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2338 | if (rc) | |
2339 | return rc; | |
2340 | ||
2341 | pSMB->Timeout = 0; | |
2342 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2343 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2344 | pSMB->LockType = lock_type; | |
2345 | pSMB->AndXCommand = 0xFF; /* none */ | |
2346 | pSMB->Fid = netfid; /* netfid stays le */ | |
2347 | ||
2348 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2349 | inc_rfc1001_len(pSMB, count); | |
2350 | pSMB->ByteCount = cpu_to_le16(count); | |
2351 | ||
2352 | iov[0].iov_base = (char *)pSMB; | |
2353 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2354 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2355 | iov[1].iov_base = (char *)buf; | |
2356 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2357 | ||
44c58186 | 2358 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
da502f7d PS |
2359 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP, |
2360 | &rsp_iov); | |
2361 | cifs_small_buf_release(pSMB); | |
9ee305b7 | 2362 | if (rc) |
f96637be | 2363 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2364 | |
2365 | return rc; | |
2366 | } | |
d6e04ae6 | 2367 | |
1da177e4 | 2368 | int |
6d5786a3 | 2369 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2370 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2371 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2372 | const __u32 numLock, const __u8 lockType, |
2373 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2374 | { |
2375 | int rc = 0; | |
2376 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2377 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2378 | int bytes_returned; |
a891f0f8 | 2379 | int flags = 0; |
1da177e4 LT |
2380 | __u16 count; |
2381 | ||
f96637be JP |
2382 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2383 | (int)waitFlag, numLock); | |
46810cbf SF |
2384 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2385 | ||
1da177e4 LT |
2386 | if (rc) |
2387 | return rc; | |
2388 | ||
790fe579 | 2389 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2390 | /* no response expected */ |
2391 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2392 | pSMB->Timeout = 0; |
4b18f2a9 | 2393 | } else if (waitFlag) { |
a891f0f8 | 2394 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2395 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2396 | } else { | |
2397 | pSMB->Timeout = 0; | |
2398 | } | |
2399 | ||
2400 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2401 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2402 | pSMB->LockType = lockType; | |
12fed00d | 2403 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2404 | pSMB->AndXCommand = 0xFF; /* none */ |
2405 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2406 | ||
790fe579 | 2407 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2408 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2409 | /* BB where to store pid high? */ |
2410 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2411 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2412 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2413 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2414 | count = sizeof(LOCKING_ANDX_RANGE); | |
2415 | } else { | |
2416 | /* oplock break */ | |
2417 | count = 0; | |
2418 | } | |
be8e3b00 | 2419 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2420 | pSMB->ByteCount = cpu_to_le16(count); |
2421 | ||
da502f7d | 2422 | if (waitFlag) |
7ee1af76 | 2423 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 2424 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 2425 | else |
a891f0f8 | 2426 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 2427 | cifs_small_buf_release(pSMB); |
44c58186 | 2428 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2429 | if (rc) |
f96637be | 2430 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2431 | |
50c2f753 | 2432 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2433 | since file handle passed in no longer valid */ |
2434 | return rc; | |
2435 | } | |
2436 | ||
08547b03 | 2437 | int |
6d5786a3 | 2438 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2439 | const __u16 smb_file_id, const __u32 netpid, |
2440 | const loff_t start_offset, const __u64 len, | |
2441 | struct file_lock *pLockData, const __u16 lock_type, | |
2442 | const bool waitFlag) | |
08547b03 SF |
2443 | { |
2444 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2445 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2446 | struct cifs_posix_lock *parm_data; |
2447 | int rc = 0; | |
3a5ff61c | 2448 | int timeout = 0; |
08547b03 | 2449 | int bytes_returned = 0; |
133672ef | 2450 | int resp_buf_type = 0; |
08547b03 | 2451 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2452 | struct kvec iov[1]; |
da502f7d | 2453 | struct kvec rsp_iov; |
08547b03 | 2454 | |
f96637be | 2455 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2456 | |
08547b03 SF |
2457 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2458 | ||
2459 | if (rc) | |
2460 | return rc; | |
2461 | ||
2462 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2463 | ||
50c2f753 | 2464 | params = 6; |
08547b03 SF |
2465 | pSMB->MaxSetupCount = 0; |
2466 | pSMB->Reserved = 0; | |
2467 | pSMB->Flags = 0; | |
08547b03 SF |
2468 | pSMB->Reserved2 = 0; |
2469 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2470 | offset = param_offset + params; | |
2471 | ||
08547b03 SF |
2472 | count = sizeof(struct cifs_posix_lock); |
2473 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2474 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2475 | pSMB->SetupCount = 1; |
2476 | pSMB->Reserved3 = 0; | |
c5fd363d | 2477 | if (pLockData) |
08547b03 SF |
2478 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2479 | else | |
2480 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2481 | byte_count = 3 /* pad */ + params + count; | |
2482 | pSMB->DataCount = cpu_to_le16(count); | |
2483 | pSMB->ParameterCount = cpu_to_le16(params); | |
2484 | pSMB->TotalDataCount = pSMB->DataCount; | |
2485 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2486 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2487 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2488 | (((char *) &pSMB->hdr.Protocol) + offset); |
2489 | ||
2490 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2491 | if (waitFlag) { |
133672ef | 2492 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2493 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2494 | pSMB->Timeout = cpu_to_le32(-1); |
2495 | } else | |
2496 | pSMB->Timeout = 0; | |
2497 | ||
4f6bcec9 | 2498 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2499 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2500 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2501 | |
2502 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2503 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2504 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2505 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2506 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2507 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2508 | if (waitFlag) { |
2509 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2510 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2511 | } else { | |
133672ef | 2512 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2513 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2514 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2515 | &resp_buf_type, timeout, &rsp_iov); |
2516 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2517 | } |
da502f7d | 2518 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2519 | |
08547b03 | 2520 | if (rc) { |
f96637be | 2521 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2522 | } else if (pLockData) { |
fc94cdb9 SF |
2523 | /* lock structure can be returned on get */ |
2524 | __u16 data_offset; | |
2525 | __u16 data_count; | |
2526 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2527 | ||
820a803f | 2528 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2529 | rc = -EIO; /* bad smb */ |
2530 | goto plk_err_exit; | |
2531 | } | |
fc94cdb9 SF |
2532 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2533 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2534 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2535 | rc = -EIO; |
2536 | goto plk_err_exit; | |
2537 | } | |
2538 | parm_data = (struct cifs_posix_lock *) | |
2539 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2540 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2541 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2542 | else { |
2543 | if (parm_data->lock_type == | |
bc09d141 | 2544 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2545 | pLockData->fl_type = F_RDLCK; |
2546 | else if (parm_data->lock_type == | |
bc09d141 | 2547 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2548 | pLockData->fl_type = F_WRLCK; |
2549 | ||
5443d130 SF |
2550 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2551 | pLockData->fl_end = pLockData->fl_start + | |
2552 | le64_to_cpu(parm_data->length) - 1; | |
9d5b86ac | 2553 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2554 | } |
08547b03 | 2555 | } |
50c2f753 | 2556 | |
fc94cdb9 | 2557 | plk_err_exit: |
da502f7d | 2558 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2559 | |
08547b03 SF |
2560 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2561 | since file handle passed in no longer valid */ | |
2562 | ||
2563 | return rc; | |
2564 | } | |
2565 | ||
2566 | ||
1da177e4 | 2567 | int |
6d5786a3 | 2568 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2569 | { |
2570 | int rc = 0; | |
2571 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2572 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2573 | |
2574 | /* do not retry on dead session on close */ | |
2575 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2576 | if (rc == -EAGAIN) |
1da177e4 LT |
2577 | return 0; |
2578 | if (rc) | |
2579 | return rc; | |
2580 | ||
1da177e4 | 2581 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2582 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2583 | pSMB->ByteCount = 0; |
792af7b0 | 2584 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2585 | cifs_small_buf_release(pSMB); |
44c58186 | 2586 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2587 | if (rc) { |
790fe579 | 2588 | if (rc != -EINTR) { |
1da177e4 | 2589 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2590 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2591 | } |
2592 | } | |
2593 | ||
1da177e4 | 2594 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2595 | if (rc == -EAGAIN) |
1da177e4 LT |
2596 | rc = 0; |
2597 | ||
2598 | return rc; | |
2599 | } | |
2600 | ||
b298f223 | 2601 | int |
6d5786a3 | 2602 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2603 | { |
2604 | int rc = 0; | |
2605 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2606 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2607 | |
2608 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2609 | if (rc) | |
2610 | return rc; | |
2611 | ||
2612 | pSMB->FileID = (__u16) smb_file_id; | |
2613 | pSMB->ByteCount = 0; | |
792af7b0 | 2614 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2615 | cifs_small_buf_release(pSMB); |
44c58186 | 2616 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2617 | if (rc) |
f96637be | 2618 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2619 | |
2620 | return rc; | |
2621 | } | |
2622 | ||
1da177e4 | 2623 | int |
6d5786a3 | 2624 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2625 | const char *from_name, const char *to_name, |
2626 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2627 | { |
2628 | int rc = 0; | |
2629 | RENAME_REQ *pSMB = NULL; | |
2630 | RENAME_RSP *pSMBr = NULL; | |
2631 | int bytes_returned; | |
2632 | int name_len, name_len2; | |
2633 | __u16 count; | |
2baa2682 | 2634 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2635 | |
f96637be | 2636 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2637 | renameRetry: |
2638 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2639 | (void **) &pSMBr); | |
2640 | if (rc) | |
2641 | return rc; | |
2642 | ||
2643 | pSMB->BufferFormat = 0x04; | |
2644 | pSMB->SearchAttributes = | |
2645 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2646 | ATTR_DIRECTORY); | |
2647 | ||
2648 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2649 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2650 | from_name, PATH_MAX, | |
2651 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2652 | name_len++; /* trailing null */ |
2653 | name_len *= 2; | |
2654 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2655 | /* protocol requires ASCII signature byte on Unicode string */ | |
2656 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2657 | name_len2 = | |
acbbb76a | 2658 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2659 | to_name, PATH_MAX, cifs_sb->local_nls, |
2660 | remap); | |
1da177e4 LT |
2661 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2662 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2663 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2664 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2665 | name_len++; /* trailing null */ |
8ceb9843 PS |
2666 | strncpy(pSMB->OldFileName, from_name, name_len); |
2667 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2668 | name_len2++; /* trailing null */ |
2669 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2670 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2671 | name_len2++; /* trailing null */ |
2672 | name_len2++; /* signature byte */ | |
2673 | } | |
2674 | ||
2675 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2676 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2677 | pSMB->ByteCount = cpu_to_le16(count); |
2678 | ||
2679 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2680 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2681 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2682 | if (rc) |
f96637be | 2683 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2684 | |
1da177e4 LT |
2685 | cifs_buf_release(pSMB); |
2686 | ||
2687 | if (rc == -EAGAIN) | |
2688 | goto renameRetry; | |
2689 | ||
2690 | return rc; | |
2691 | } | |
2692 | ||
6d5786a3 | 2693 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2694 | int netfid, const char *target_name, |
50c2f753 | 2695 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2696 | { |
2697 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2698 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2699 | struct set_file_rename *rename_info; |
1da177e4 LT |
2700 | char *data_offset; |
2701 | char dummy_string[30]; | |
2702 | int rc = 0; | |
2703 | int bytes_returned = 0; | |
2704 | int len_of_str; | |
2705 | __u16 params, param_offset, offset, count, byte_count; | |
2706 | ||
f96637be | 2707 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2708 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2709 | (void **) &pSMBr); | |
2710 | if (rc) | |
2711 | return rc; | |
2712 | ||
2713 | params = 6; | |
2714 | pSMB->MaxSetupCount = 0; | |
2715 | pSMB->Reserved = 0; | |
2716 | pSMB->Flags = 0; | |
2717 | pSMB->Timeout = 0; | |
2718 | pSMB->Reserved2 = 0; | |
2719 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2720 | offset = param_offset + params; | |
2721 | ||
2722 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2723 | rename_info = (struct set_file_rename *) data_offset; | |
2724 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2725 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2726 | pSMB->SetupCount = 1; |
2727 | pSMB->Reserved3 = 0; | |
2728 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2729 | byte_count = 3 /* pad */ + params; | |
2730 | pSMB->ParameterCount = cpu_to_le16(params); | |
2731 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2732 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2733 | pSMB->DataOffset = cpu_to_le16(offset); | |
2734 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2735 | rename_info->overwrite = cpu_to_le32(1); | |
2736 | rename_info->root_fid = 0; | |
2737 | /* unicode only call */ | |
790fe579 | 2738 | if (target_name == NULL) { |
50c2f753 | 2739 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2740 | len_of_str = |
2741 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2742 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2743 | } else { |
acbbb76a SF |
2744 | len_of_str = |
2745 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2746 | target_name, PATH_MAX, nls_codepage, |
2747 | remap); | |
1da177e4 LT |
2748 | } |
2749 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2750 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2751 | byte_count += count; |
2752 | pSMB->DataCount = cpu_to_le16(count); | |
2753 | pSMB->TotalDataCount = pSMB->DataCount; | |
2754 | pSMB->Fid = netfid; | |
2755 | pSMB->InformationLevel = | |
2756 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2757 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2758 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2759 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2760 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2761 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2762 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2763 | if (rc) |
f96637be JP |
2764 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2765 | rc); | |
a5a2b489 | 2766 | |
1da177e4 LT |
2767 | cifs_buf_release(pSMB); |
2768 | ||
2769 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2770 | since file handle passed in no longer valid */ | |
2771 | ||
2772 | return rc; | |
2773 | } | |
2774 | ||
2775 | int | |
6d5786a3 PS |
2776 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2777 | const char *fromName, const __u16 target_tid, const char *toName, | |
2778 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2779 | { |
2780 | int rc = 0; | |
2781 | COPY_REQ *pSMB = NULL; | |
2782 | COPY_RSP *pSMBr = NULL; | |
2783 | int bytes_returned; | |
2784 | int name_len, name_len2; | |
2785 | __u16 count; | |
2786 | ||
f96637be | 2787 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2788 | copyRetry: |
2789 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2790 | (void **) &pSMBr); | |
2791 | if (rc) | |
2792 | return rc; | |
2793 | ||
2794 | pSMB->BufferFormat = 0x04; | |
2795 | pSMB->Tid2 = target_tid; | |
2796 | ||
2797 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2798 | ||
2799 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2800 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2801 | fromName, PATH_MAX, nls_codepage, | |
2802 | remap); | |
1da177e4 LT |
2803 | name_len++; /* trailing null */ |
2804 | name_len *= 2; | |
2805 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2806 | /* protocol requires ASCII signature byte on Unicode string */ | |
2807 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2808 | name_len2 = |
acbbb76a SF |
2809 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2810 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2811 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2812 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2813 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2814 | name_len = strnlen(fromName, PATH_MAX); |
2815 | name_len++; /* trailing null */ | |
2816 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2817 | name_len2 = strnlen(toName, PATH_MAX); | |
2818 | name_len2++; /* trailing null */ | |
2819 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2820 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2821 | name_len2++; /* trailing null */ | |
2822 | name_len2++; /* signature byte */ | |
2823 | } | |
2824 | ||
2825 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2826 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2827 | pSMB->ByteCount = cpu_to_le16(count); |
2828 | ||
2829 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2830 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2831 | if (rc) { | |
f96637be JP |
2832 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2833 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2834 | } |
0d817bc0 | 2835 | cifs_buf_release(pSMB); |
1da177e4 LT |
2836 | |
2837 | if (rc == -EAGAIN) | |
2838 | goto copyRetry; | |
2839 | ||
2840 | return rc; | |
2841 | } | |
2842 | ||
2843 | int | |
6d5786a3 | 2844 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2845 | const char *fromName, const char *toName, |
bc8ebdc4 | 2846 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2847 | { |
2848 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2849 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2850 | char *data_offset; | |
2851 | int name_len; | |
2852 | int name_len_target; | |
2853 | int rc = 0; | |
2854 | int bytes_returned = 0; | |
2855 | __u16 params, param_offset, offset, byte_count; | |
2856 | ||
f96637be | 2857 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2858 | createSymLinkRetry: |
2859 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2860 | (void **) &pSMBr); | |
2861 | if (rc) | |
2862 | return rc; | |
2863 | ||
2864 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2865 | name_len = | |
bc8ebdc4 NA |
2866 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2867 | /* find define for this maxpathcomponent */ | |
2868 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2869 | name_len++; /* trailing null */ |
2870 | name_len *= 2; | |
2871 | ||
50c2f753 | 2872 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2873 | name_len = strnlen(fromName, PATH_MAX); |
2874 | name_len++; /* trailing null */ | |
2875 | strncpy(pSMB->FileName, fromName, name_len); | |
2876 | } | |
2877 | params = 6 + name_len; | |
2878 | pSMB->MaxSetupCount = 0; | |
2879 | pSMB->Reserved = 0; | |
2880 | pSMB->Flags = 0; | |
2881 | pSMB->Timeout = 0; | |
2882 | pSMB->Reserved2 = 0; | |
2883 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2884 | InformationLevel) - 4; |
1da177e4 LT |
2885 | offset = param_offset + params; |
2886 | ||
2887 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2888 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2889 | name_len_target = | |
bc8ebdc4 NA |
2890 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2891 | /* find define for this maxpathcomponent */ | |
2892 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2893 | name_len_target++; /* trailing null */ |
2894 | name_len_target *= 2; | |
50c2f753 | 2895 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2896 | name_len_target = strnlen(toName, PATH_MAX); |
2897 | name_len_target++; /* trailing null */ | |
2898 | strncpy(data_offset, toName, name_len_target); | |
2899 | } | |
2900 | ||
2901 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2902 | /* BB find exact max on data count below from sess */ | |
2903 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2904 | pSMB->SetupCount = 1; | |
2905 | pSMB->Reserved3 = 0; | |
2906 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2907 | byte_count = 3 /* pad */ + params + name_len_target; | |
2908 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2909 | pSMB->ParameterCount = cpu_to_le16(params); | |
2910 | pSMB->TotalDataCount = pSMB->DataCount; | |
2911 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2912 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2913 | pSMB->DataOffset = cpu_to_le16(offset); | |
2914 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2915 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2916 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2917 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2918 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2919 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2920 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2921 | if (rc) |
f96637be JP |
2922 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2923 | rc); | |
1da177e4 | 2924 | |
0d817bc0 | 2925 | cifs_buf_release(pSMB); |
1da177e4 LT |
2926 | |
2927 | if (rc == -EAGAIN) | |
2928 | goto createSymLinkRetry; | |
2929 | ||
2930 | return rc; | |
2931 | } | |
2932 | ||
2933 | int | |
6d5786a3 | 2934 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2935 | const char *fromName, const char *toName, |
737b758c | 2936 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2937 | { |
2938 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2939 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2940 | char *data_offset; | |
2941 | int name_len; | |
2942 | int name_len_target; | |
2943 | int rc = 0; | |
2944 | int bytes_returned = 0; | |
2945 | __u16 params, param_offset, offset, byte_count; | |
2946 | ||
f96637be | 2947 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2948 | createHardLinkRetry: |
2949 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2950 | (void **) &pSMBr); | |
2951 | if (rc) | |
2952 | return rc; | |
2953 | ||
2954 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2955 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2956 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2957 | name_len++; /* trailing null */ |
2958 | name_len *= 2; | |
2959 | ||
50c2f753 | 2960 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2961 | name_len = strnlen(toName, PATH_MAX); |
2962 | name_len++; /* trailing null */ | |
2963 | strncpy(pSMB->FileName, toName, name_len); | |
2964 | } | |
2965 | params = 6 + name_len; | |
2966 | pSMB->MaxSetupCount = 0; | |
2967 | pSMB->Reserved = 0; | |
2968 | pSMB->Flags = 0; | |
2969 | pSMB->Timeout = 0; | |
2970 | pSMB->Reserved2 = 0; | |
2971 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2972 | InformationLevel) - 4; |
1da177e4 LT |
2973 | offset = param_offset + params; |
2974 | ||
2975 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2976 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2977 | name_len_target = | |
acbbb76a SF |
2978 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2979 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2980 | name_len_target++; /* trailing null */ |
2981 | name_len_target *= 2; | |
50c2f753 | 2982 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2983 | name_len_target = strnlen(fromName, PATH_MAX); |
2984 | name_len_target++; /* trailing null */ | |
2985 | strncpy(data_offset, fromName, name_len_target); | |
2986 | } | |
2987 | ||
2988 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2989 | /* BB find exact max on data count below from sess*/ | |
2990 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2991 | pSMB->SetupCount = 1; | |
2992 | pSMB->Reserved3 = 0; | |
2993 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2994 | byte_count = 3 /* pad */ + params + name_len_target; | |
2995 | pSMB->ParameterCount = cpu_to_le16(params); | |
2996 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2997 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2998 | pSMB->TotalDataCount = pSMB->DataCount; | |
2999 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3000 | pSMB->DataOffset = cpu_to_le16(offset); | |
3001 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
3002 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3003 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3004 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3005 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3006 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3007 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3008 | if (rc) |
f96637be JP |
3009 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
3010 | rc); | |
1da177e4 LT |
3011 | |
3012 | cifs_buf_release(pSMB); | |
3013 | if (rc == -EAGAIN) | |
3014 | goto createHardLinkRetry; | |
3015 | ||
3016 | return rc; | |
3017 | } | |
3018 | ||
3019 | int | |
6d5786a3 | 3020 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
3021 | const char *from_name, const char *to_name, |
3022 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
3023 | { |
3024 | int rc = 0; | |
3025 | NT_RENAME_REQ *pSMB = NULL; | |
3026 | RENAME_RSP *pSMBr = NULL; | |
3027 | int bytes_returned; | |
3028 | int name_len, name_len2; | |
3029 | __u16 count; | |
2baa2682 | 3030 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 3031 | |
f96637be | 3032 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
3033 | winCreateHardLinkRetry: |
3034 | ||
3035 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3036 | (void **) &pSMBr); | |
3037 | if (rc) | |
3038 | return rc; | |
3039 | ||
3040 | pSMB->SearchAttributes = | |
3041 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3042 | ATTR_DIRECTORY); | |
3043 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3044 | pSMB->ClusterCount = 0; | |
3045 | ||
3046 | pSMB->BufferFormat = 0x04; | |
3047 | ||
3048 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3049 | name_len = | |
d6e906f1 SF |
3050 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3051 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3052 | name_len++; /* trailing null */ |
3053 | name_len *= 2; | |
fcc7c09d JL |
3054 | |
3055 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3056 | pSMB->OldFileName[name_len] = 0x04; | |
3057 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3058 | name_len2 = |
acbbb76a | 3059 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3060 | to_name, PATH_MAX, cifs_sb->local_nls, |
3061 | remap); | |
1da177e4 LT |
3062 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3063 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 3064 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 3065 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 3066 | name_len++; /* trailing null */ |
d6e906f1 SF |
3067 | strncpy(pSMB->OldFileName, from_name, name_len); |
3068 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
3069 | name_len2++; /* trailing null */ |
3070 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 3071 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
3072 | name_len2++; /* trailing null */ |
3073 | name_len2++; /* signature byte */ | |
3074 | } | |
3075 | ||
3076 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3077 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3078 | pSMB->ByteCount = cpu_to_le16(count); |
3079 | ||
3080 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3081 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3082 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3083 | if (rc) |
f96637be | 3084 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3085 | |
1da177e4 LT |
3086 | cifs_buf_release(pSMB); |
3087 | if (rc == -EAGAIN) | |
3088 | goto winCreateHardLinkRetry; | |
3089 | ||
3090 | return rc; | |
3091 | } | |
3092 | ||
3093 | int | |
6d5786a3 | 3094 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3095 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3096 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3097 | { |
3098 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3099 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3100 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3101 | int rc = 0; | |
3102 | int bytes_returned; | |
3103 | int name_len; | |
3104 | __u16 params, byte_count; | |
460b9696 | 3105 | char *data_start; |
1da177e4 | 3106 | |
f96637be | 3107 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3108 | |
3109 | querySymLinkRetry: | |
3110 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3111 | (void **) &pSMBr); | |
3112 | if (rc) | |
3113 | return rc; | |
3114 | ||
3115 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3116 | name_len = | |
bc8ebdc4 NA |
3117 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3118 | searchName, PATH_MAX, nls_codepage, | |
3119 | remap); | |
1da177e4 LT |
3120 | name_len++; /* trailing null */ |
3121 | name_len *= 2; | |
50c2f753 | 3122 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3123 | name_len = strnlen(searchName, PATH_MAX); |
3124 | name_len++; /* trailing null */ | |
3125 | strncpy(pSMB->FileName, searchName, name_len); | |
3126 | } | |
3127 | ||
3128 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3129 | pSMB->TotalDataCount = 0; | |
3130 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3131 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3132 | pSMB->MaxSetupCount = 0; |
3133 | pSMB->Reserved = 0; | |
3134 | pSMB->Flags = 0; | |
3135 | pSMB->Timeout = 0; | |
3136 | pSMB->Reserved2 = 0; | |
3137 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3138 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3139 | pSMB->DataCount = 0; |
3140 | pSMB->DataOffset = 0; | |
3141 | pSMB->SetupCount = 1; | |
3142 | pSMB->Reserved3 = 0; | |
3143 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3144 | byte_count = params + 1 /* pad */ ; | |
3145 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3146 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3147 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3148 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3149 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3150 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3151 | ||
3152 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3153 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3154 | if (rc) { | |
f96637be | 3155 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3156 | } else { |
3157 | /* decode response */ | |
3158 | ||
3159 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3160 | /* BB also check enough total bytes returned */ |
820a803f | 3161 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3162 | rc = -EIO; |
1da177e4 | 3163 | else { |
0e0d2cf3 | 3164 | bool is_unicode; |
460b9696 JL |
3165 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3166 | ||
3167 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3168 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3169 | |
0e0d2cf3 SF |
3170 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3171 | is_unicode = true; | |
3172 | else | |
3173 | is_unicode = false; | |
3174 | ||
737b758c | 3175 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3176 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3177 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3178 | if (!*symlinkinfo) |
460b9696 | 3179 | rc = -ENOMEM; |
1da177e4 LT |
3180 | } |
3181 | } | |
3182 | cifs_buf_release(pSMB); | |
3183 | if (rc == -EAGAIN) | |
3184 | goto querySymLinkRetry; | |
3185 | return rc; | |
3186 | } | |
3187 | ||
c52a9554 SF |
3188 | /* |
3189 | * Recent Windows versions now create symlinks more frequently | |
3190 | * and they use the "reparse point" mechanism below. We can of course | |
3191 | * do symlinks nicely to Samba and other servers which support the | |
3192 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3193 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3194 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3195 | * In the interim this code has been moved to its own config option so | |
3196 | * it is not compiled in by default until callers fixed up and more tested. | |
3197 | */ | |
1da177e4 | 3198 | int |
d244bf2d PS |
3199 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3200 | __u16 fid, char **symlinkinfo, | |
3201 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3202 | { |
3203 | int rc = 0; | |
3204 | int bytes_returned; | |
50c2f753 SF |
3205 | struct smb_com_transaction_ioctl_req *pSMB; |
3206 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3207 | bool is_unicode; |
3208 | unsigned int sub_len; | |
3209 | char *sub_start; | |
c31f3307 SF |
3210 | struct reparse_symlink_data *reparse_buf; |
3211 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3212 | __u32 data_offset, data_count; |
3213 | char *end_of_smb; | |
3214 | ||
3215 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3216 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3217 | (void **) &pSMBr); | |
3218 | if (rc) | |
3219 | return rc; | |
3220 | ||
3221 | pSMB->TotalParameterCount = 0 ; | |
3222 | pSMB->TotalDataCount = 0; | |
3223 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3224 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3225 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3226 | pSMB->MaxSetupCount = 4; |
3227 | pSMB->Reserved = 0; | |
3228 | pSMB->ParameterOffset = 0; | |
3229 | pSMB->DataCount = 0; | |
3230 | pSMB->DataOffset = 0; | |
3231 | pSMB->SetupCount = 4; | |
3232 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3233 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3234 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3235 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3236 | pSMB->IsRootFlag = 0; | |
3237 | pSMB->Fid = fid; /* file handle always le */ | |
3238 | pSMB->ByteCount = 0; | |
3239 | ||
3240 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3241 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3242 | if (rc) { | |
f96637be | 3243 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3244 | goto qreparse_out; |
3245 | } | |
3246 | ||
3247 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3248 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3249 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3250 | /* BB also check enough total bytes returned */ | |
3251 | rc = -EIO; /* bad smb */ | |
3252 | goto qreparse_out; | |
3253 | } | |
3254 | if (!data_count || (data_count > 2048)) { | |
3255 | rc = -EIO; | |
3256 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3257 | goto qreparse_out; | |
3258 | } | |
3259 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3260 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3261 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3262 | if ((char *)reparse_buf >= end_of_smb) { | |
3263 | rc = -EIO; | |
3264 | goto qreparse_out; | |
1da177e4 | 3265 | } |
c31f3307 SF |
3266 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3267 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3268 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3269 | ||
3270 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3271 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3272 | le64_to_cpu(posix_buf->InodeType)); | |
3273 | rc = -EOPNOTSUPP; | |
3274 | goto qreparse_out; | |
3275 | } | |
3276 | is_unicode = true; | |
3277 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3278 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3279 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3280 | rc = -EIO; | |
3281 | goto qreparse_out; | |
3282 | } | |
3283 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3284 | sub_len, is_unicode, nls_codepage); | |
3285 | goto qreparse_out; | |
3286 | } else if (reparse_buf->ReparseTag != | |
3287 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3288 | rc = -EOPNOTSUPP; | |
3289 | goto qreparse_out; | |
3290 | } | |
3291 | ||
3292 | /* Reparse tag is NTFS symlink */ | |
3293 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3294 | reparse_buf->PathBuffer; | |
3295 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3296 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3297 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3298 | rc = -EIO; | |
3299 | goto qreparse_out; | |
3300 | } | |
d244bf2d PS |
3301 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3302 | is_unicode = true; | |
3303 | else | |
3304 | is_unicode = false; | |
989c7e51 | 3305 | |
d244bf2d PS |
3306 | /* BB FIXME investigate remapping reserved chars here */ |
3307 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3308 | nls_codepage); | |
3309 | if (!*symlinkinfo) | |
3310 | rc = -ENOMEM; | |
1da177e4 | 3311 | qreparse_out: |
4a6d87f1 | 3312 | cifs_buf_release(pSMB); |
1da177e4 | 3313 | |
d244bf2d PS |
3314 | /* |
3315 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3316 | * since file handle passed in no longer valid. | |
3317 | */ | |
1da177e4 LT |
3318 | return rc; |
3319 | } | |
3320 | ||
c7f508a9 SF |
3321 | int |
3322 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3323 | __u16 fid) | |
3324 | { | |
3325 | int rc = 0; | |
3326 | int bytes_returned; | |
3327 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3328 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3329 | ||
3330 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3331 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3332 | (void **) &pSMBr); | |
3333 | if (rc) | |
3334 | return rc; | |
3335 | ||
3336 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3337 | ||
3338 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3339 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3340 | pSMB->MaxParameterCount = 0; |
3341 | pSMB->MaxDataCount = 0; | |
3342 | pSMB->MaxSetupCount = 4; | |
3343 | pSMB->Reserved = 0; | |
3344 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3345 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3346 | pSMB->DataOffset = |
3347 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3348 | compression_state) - 4); /* 84 */ | |
3349 | pSMB->SetupCount = 4; | |
bc09d141 | 3350 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3351 | pSMB->ParameterCount = 0; |
bc09d141 | 3352 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3353 | pSMB->IsFsctl = 1; /* FSCTL */ |
3354 | pSMB->IsRootFlag = 0; | |
3355 | pSMB->Fid = fid; /* file handle always le */ | |
3356 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3357 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3358 | inc_rfc1001_len(pSMB, 5); |
3359 | ||
3360 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3361 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3362 | if (rc) | |
3363 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3364 | ||
3365 | cifs_buf_release(pSMB); | |
3366 | ||
3367 | /* | |
3368 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3369 | * since file handle passed in no longer valid. | |
3370 | */ | |
3371 | return rc; | |
3372 | } | |
3373 | ||
3374 | ||
1da177e4 LT |
3375 | #ifdef CONFIG_CIFS_POSIX |
3376 | ||
3377 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3378 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3379 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3380 | { |
3381 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3382 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3383 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3384 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3385 | /* |
3386 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3387 | ace->e_perm, ace->e_tag, ace->e_id); | |
3388 | */ | |
1da177e4 LT |
3389 | |
3390 | return; | |
3391 | } | |
3392 | ||
3393 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3394 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3395 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3396 | { |
3397 | int size = 0; | |
3398 | int i; | |
3399 | __u16 count; | |
50c2f753 SF |
3400 | struct cifs_posix_ace *pACE; |
3401 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3402 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3403 | |
3404 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3405 | return -EOPNOTSUPP; | |
3406 | ||
45987e00 | 3407 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3408 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3409 | pACE = &cifs_acl->ace_array[0]; | |
3410 | size = sizeof(struct cifs_posix_acl); | |
3411 | size += sizeof(struct cifs_posix_ace) * count; | |
3412 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3413 | if (size_of_data_area < size) { |
f96637be JP |
3414 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3415 | size_of_data_area, size); | |
1da177e4 LT |
3416 | return -EINVAL; |
3417 | } | |
45987e00 | 3418 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3419 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3420 | size = sizeof(struct cifs_posix_acl); | |
3421 | size += sizeof(struct cifs_posix_ace) * count; | |
3422 | /* skip past access ACEs to get to default ACEs */ | |
3423 | pACE = &cifs_acl->ace_array[count]; | |
3424 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3425 | size += sizeof(struct cifs_posix_ace) * count; | |
3426 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3427 | if (size_of_data_area < size) |
1da177e4 LT |
3428 | return -EINVAL; |
3429 | } else { | |
3430 | /* illegal type */ | |
3431 | return -EINVAL; | |
3432 | } | |
3433 | ||
3434 | size = posix_acl_xattr_size(count); | |
790fe579 | 3435 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3436 | /* used to query ACL EA size */ |
790fe579 | 3437 | } else if (size > buflen) { |
1da177e4 LT |
3438 | return -ERANGE; |
3439 | } else /* buffer big enough */ { | |
2211d5ba AG |
3440 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3441 | ||
ff7feac9 | 3442 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3443 | for (i = 0; i < count ; i++) { |
2211d5ba | 3444 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3445 | pACE++; |
1da177e4 LT |
3446 | } |
3447 | } | |
3448 | return size; | |
3449 | } | |
3450 | ||
50c2f753 | 3451 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3452 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 LT |
3453 | { |
3454 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3455 | ||
ff7feac9 SF |
3456 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3457 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3458 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3459 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3460 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3461 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3462 | } else |
ff7feac9 | 3463 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3464 | /* |
3465 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3466 | ace->e_perm, ace->e_tag, ace->e_id); | |
3467 | */ | |
1da177e4 LT |
3468 | return rc; |
3469 | } | |
3470 | ||
3471 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3472 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3473 | const int buflen, const int acl_type) | |
1da177e4 LT |
3474 | { |
3475 | __u16 rc = 0; | |
50c2f753 | 3476 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3477 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3478 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3479 | int count; |
3480 | int i; | |
3481 | ||
790fe579 | 3482 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3483 | return 0; |
3484 | ||
3485 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3486 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3487 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3488 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3489 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3490 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3491 | return 0; |
3492 | } | |
3493 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3494 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3495 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3496 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3497 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3498 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3499 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3500 | } else { |
f96637be | 3501 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3502 | return 0; |
3503 | } | |
50c2f753 | 3504 | for (i = 0; i < count; i++) { |
ae9ebe7c | 3505 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); |
790fe579 | 3506 | if (rc != 0) { |
1da177e4 LT |
3507 | /* ACE not converted */ |
3508 | break; | |
3509 | } | |
3510 | } | |
790fe579 | 3511 | if (rc == 0) { |
1da177e4 LT |
3512 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3513 | rc += sizeof(struct cifs_posix_acl); | |
3514 | /* BB add check to make sure ACL does not overflow SMB */ | |
3515 | } | |
3516 | return rc; | |
3517 | } | |
3518 | ||
3519 | int | |
6d5786a3 | 3520 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3521 | const unsigned char *searchName, |
3522 | char *acl_inf, const int buflen, const int acl_type, | |
3523 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3524 | { |
3525 | /* SMB_QUERY_POSIX_ACL */ | |
3526 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3527 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3528 | int rc = 0; | |
3529 | int bytes_returned; | |
3530 | int name_len; | |
3531 | __u16 params, byte_count; | |
50c2f753 | 3532 | |
f96637be | 3533 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3534 | |
3535 | queryAclRetry: | |
3536 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3537 | (void **) &pSMBr); | |
3538 | if (rc) | |
3539 | return rc; | |
50c2f753 | 3540 | |
1da177e4 LT |
3541 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3542 | name_len = | |
acbbb76a SF |
3543 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3544 | searchName, PATH_MAX, nls_codepage, | |
3545 | remap); | |
1da177e4 LT |
3546 | name_len++; /* trailing null */ |
3547 | name_len *= 2; | |
3548 | pSMB->FileName[name_len] = 0; | |
3549 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3550 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3551 | name_len = strnlen(searchName, PATH_MAX); |
3552 | name_len++; /* trailing null */ | |
3553 | strncpy(pSMB->FileName, searchName, name_len); | |
3554 | } | |
3555 | ||
3556 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3557 | pSMB->TotalDataCount = 0; | |
3558 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3559 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3560 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3561 | pSMB->MaxSetupCount = 0; | |
3562 | pSMB->Reserved = 0; | |
3563 | pSMB->Flags = 0; | |
3564 | pSMB->Timeout = 0; | |
3565 | pSMB->Reserved2 = 0; | |
3566 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3567 | offsetof(struct smb_com_transaction2_qpi_req, |
3568 | InformationLevel) - 4); | |
1da177e4 LT |
3569 | pSMB->DataCount = 0; |
3570 | pSMB->DataOffset = 0; | |
3571 | pSMB->SetupCount = 1; | |
3572 | pSMB->Reserved3 = 0; | |
3573 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3574 | byte_count = params + 1 /* pad */ ; | |
3575 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3576 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3577 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3578 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3579 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3580 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3581 | ||
3582 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3583 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3584 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3585 | if (rc) { |
f96637be | 3586 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3587 | } else { |
3588 | /* decode response */ | |
50c2f753 | 3589 | |
1da177e4 | 3590 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3591 | /* BB also check enough total bytes returned */ |
820a803f | 3592 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3593 | rc = -EIO; /* bad smb */ |
3594 | else { | |
3595 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3596 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3597 | rc = cifs_copy_posix_acl(acl_inf, | |
3598 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3599 | buflen, acl_type, count); |
1da177e4 LT |
3600 | } |
3601 | } | |
3602 | cifs_buf_release(pSMB); | |
3603 | if (rc == -EAGAIN) | |
3604 | goto queryAclRetry; | |
3605 | return rc; | |
3606 | } | |
3607 | ||
3608 | int | |
6d5786a3 | 3609 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3610 | const unsigned char *fileName, |
3611 | const char *local_acl, const int buflen, | |
3612 | const int acl_type, | |
3613 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3614 | { |
3615 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3616 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3617 | char *parm_data; | |
3618 | int name_len; | |
3619 | int rc = 0; | |
3620 | int bytes_returned = 0; | |
3621 | __u16 params, byte_count, data_count, param_offset, offset; | |
3622 | ||
f96637be | 3623 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3624 | setAclRetry: |
3625 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3626 | (void **) &pSMBr); |
1da177e4 LT |
3627 | if (rc) |
3628 | return rc; | |
3629 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3630 | name_len = | |
acbbb76a SF |
3631 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3632 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3633 | name_len++; /* trailing null */ |
3634 | name_len *= 2; | |
50c2f753 | 3635 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3636 | name_len = strnlen(fileName, PATH_MAX); |
3637 | name_len++; /* trailing null */ | |
3638 | strncpy(pSMB->FileName, fileName, name_len); | |
3639 | } | |
3640 | params = 6 + name_len; | |
3641 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3642 | /* BB find max SMB size from sess */ |
3643 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3644 | pSMB->MaxSetupCount = 0; |
3645 | pSMB->Reserved = 0; | |
3646 | pSMB->Flags = 0; | |
3647 | pSMB->Timeout = 0; | |
3648 | pSMB->Reserved2 = 0; | |
3649 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3650 | InformationLevel) - 4; |
1da177e4 LT |
3651 | offset = param_offset + params; |
3652 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3653 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3654 | ||
3655 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3656 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3657 | |
790fe579 | 3658 | if (data_count == 0) { |
1da177e4 LT |
3659 | rc = -EOPNOTSUPP; |
3660 | goto setACLerrorExit; | |
3661 | } | |
3662 | pSMB->DataOffset = cpu_to_le16(offset); | |
3663 | pSMB->SetupCount = 1; | |
3664 | pSMB->Reserved3 = 0; | |
3665 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3666 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3667 | byte_count = 3 /* pad */ + params + data_count; | |
3668 | pSMB->DataCount = cpu_to_le16(data_count); | |
3669 | pSMB->TotalDataCount = pSMB->DataCount; | |
3670 | pSMB->ParameterCount = cpu_to_le16(params); | |
3671 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3672 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3673 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3674 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3675 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3676 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3677 | if (rc) |
f96637be | 3678 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3679 | |
3680 | setACLerrorExit: | |
3681 | cifs_buf_release(pSMB); | |
3682 | if (rc == -EAGAIN) | |
3683 | goto setAclRetry; | |
3684 | return rc; | |
3685 | } | |
3686 | ||
f654bac2 SF |
3687 | /* BB fix tabs in this function FIXME BB */ |
3688 | int | |
6d5786a3 | 3689 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3690 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3691 | { |
50c2f753 SF |
3692 | int rc = 0; |
3693 | struct smb_t2_qfi_req *pSMB = NULL; | |
3694 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3695 | int bytes_returned; | |
3696 | __u16 params, byte_count; | |
f654bac2 | 3697 | |
f96637be | 3698 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3699 | if (tcon == NULL) |
3700 | return -ENODEV; | |
f654bac2 SF |
3701 | |
3702 | GetExtAttrRetry: | |
790fe579 SF |
3703 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3704 | (void **) &pSMBr); | |
3705 | if (rc) | |
3706 | return rc; | |
f654bac2 | 3707 | |
ad7a2926 | 3708 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3709 | pSMB->t2.TotalDataCount = 0; |
3710 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3711 | /* BB find exact max data count below from sess structure BB */ | |
3712 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3713 | pSMB->t2.MaxSetupCount = 0; | |
3714 | pSMB->t2.Reserved = 0; | |
3715 | pSMB->t2.Flags = 0; | |
3716 | pSMB->t2.Timeout = 0; | |
3717 | pSMB->t2.Reserved2 = 0; | |
3718 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3719 | Fid) - 4); | |
3720 | pSMB->t2.DataCount = 0; | |
3721 | pSMB->t2.DataOffset = 0; | |
3722 | pSMB->t2.SetupCount = 1; | |
3723 | pSMB->t2.Reserved3 = 0; | |
3724 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3725 | byte_count = params + 1 /* pad */ ; | |
3726 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3727 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3728 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3729 | pSMB->Pad = 0; | |
f654bac2 | 3730 | pSMB->Fid = netfid; |
be8e3b00 | 3731 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3732 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3733 | ||
3734 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3735 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3736 | if (rc) { | |
f96637be | 3737 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3738 | } else { |
3739 | /* decode response */ | |
3740 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3741 | /* BB also check enough total bytes returned */ |
820a803f | 3742 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3743 | /* If rc should we check for EOPNOSUPP and |
3744 | disable the srvino flag? or in caller? */ | |
3745 | rc = -EIO; /* bad smb */ | |
3746 | else { | |
3747 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3748 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3749 | struct file_chattr_info *pfinfo; | |
3750 | /* BB Do we need a cast or hash here ? */ | |
3751 | if (count != 16) { | |
f96637be | 3752 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3753 | rc = -EIO; |
3754 | goto GetExtAttrOut; | |
3755 | } | |
3756 | pfinfo = (struct file_chattr_info *) | |
3757 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3758 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3759 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3760 | } |
3761 | } | |
f654bac2 | 3762 | GetExtAttrOut: |
790fe579 SF |
3763 | cifs_buf_release(pSMB); |
3764 | if (rc == -EAGAIN) | |
3765 | goto GetExtAttrRetry; | |
3766 | return rc; | |
f654bac2 SF |
3767 | } |
3768 | ||
f654bac2 | 3769 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3770 | |
79df1bae JL |
3771 | #ifdef CONFIG_CIFS_ACL |
3772 | /* | |
3773 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3774 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3775 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3776 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3777 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3778 | * by caller | |
3779 | */ | |
3780 | static int | |
3781 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3782 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3783 | void **ret_buf) |
3784 | { | |
3785 | int rc; | |
3786 | __u32 temp_offset; | |
3787 | struct smb_com_ntransact_req *pSMB; | |
3788 | ||
3789 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3790 | (void **)&pSMB); | |
3791 | if (rc) | |
3792 | return rc; | |
3793 | *ret_buf = (void *)pSMB; | |
3794 | pSMB->Reserved = 0; | |
3795 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3796 | pSMB->TotalDataCount = 0; | |
c974befa | 3797 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3798 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3799 | pSMB->DataCount = pSMB->TotalDataCount; | |
3800 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3801 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3802 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3803 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3804 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3805 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3806 | return 0; | |
3807 | } | |
3808 | ||
3809 | static int | |
3810 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3811 | __u32 *pparmlen, __u32 *pdatalen) | |
3812 | { | |
3813 | char *end_of_smb; | |
3814 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3815 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3816 | u16 bcc; |
79df1bae JL |
3817 | |
3818 | *pdatalen = 0; | |
3819 | *pparmlen = 0; | |
3820 | ||
3821 | if (buf == NULL) | |
3822 | return -EINVAL; | |
3823 | ||
3824 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3825 | ||
820a803f JL |
3826 | bcc = get_bcc(&pSMBr->hdr); |
3827 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3828 | (char *)&pSMBr->ByteCount; |
3829 | ||
3830 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3831 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3832 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3833 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3834 | ||
3835 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3836 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3837 | ||
3838 | /* should we also check that parm and data areas do not overlap? */ | |
3839 | if (*ppparm > end_of_smb) { | |
f96637be | 3840 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3841 | return -EINVAL; |
3842 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3843 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3844 | return -EINVAL; |
3845 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3846 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3847 | return -EINVAL; |
3848 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3849 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3850 | *ppdata, data_count, (data_count + *ppdata), | |
3851 | end_of_smb, pSMBr); | |
79df1bae | 3852 | return -EINVAL; |
820a803f | 3853 | } else if (parm_count + data_count > bcc) { |
f96637be | 3854 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3855 | return -EINVAL; |
3856 | } | |
3857 | *pdatalen = data_count; | |
3858 | *pparmlen = parm_count; | |
3859 | return 0; | |
3860 | } | |
3861 | ||
0a4b92c0 SF |
3862 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3863 | int | |
6d5786a3 | 3864 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3865 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3866 | { |
3867 | int rc = 0; | |
3868 | int buf_type = 0; | |
ad7a2926 | 3869 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3870 | struct kvec iov[1]; |
da502f7d | 3871 | struct kvec rsp_iov; |
0a4b92c0 | 3872 | |
f96637be | 3873 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3874 | |
630f3f0c SF |
3875 | *pbuflen = 0; |
3876 | *acl_inf = NULL; | |
3877 | ||
b9c7a2bb | 3878 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3879 | 8 /* parm len */, tcon, (void **) &pSMB); |
3880 | if (rc) | |
3881 | return rc; | |
3882 | ||
3883 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3884 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3885 | pSMB->MaxSetupCount = 0; | |
3886 | pSMB->Fid = fid; /* file handle always le */ | |
3887 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3888 | CIFS_ACL_DACL); | |
3889 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3890 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3891 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3892 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3893 | |
a761ac57 | 3894 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3895 | 0, &rsp_iov); |
3896 | cifs_small_buf_release(pSMB); | |
44c58186 | 3897 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3898 | if (rc) { |
f96637be | 3899 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3900 | } else { /* decode response */ |
ad7a2926 | 3901 | __le32 *parm; |
630f3f0c SF |
3902 | __u32 parm_len; |
3903 | __u32 acl_len; | |
50c2f753 | 3904 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3905 | char *pdata; |
0a4b92c0 SF |
3906 | |
3907 | /* validate_nttransact */ | |
da502f7d | 3908 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3909 | &pdata, &parm_len, pbuflen); |
790fe579 | 3910 | if (rc) |
0a4b92c0 | 3911 | goto qsec_out; |
da502f7d | 3912 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3913 | |
f96637be JP |
3914 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3915 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3916 | |
3917 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3918 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3919 | *pbuflen = 0; |
0a4b92c0 SF |
3920 | goto qsec_out; |
3921 | } | |
3922 | ||
3923 | /* BB check that data area is minimum length and as big as acl_len */ | |
3924 | ||
af6f4612 | 3925 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3926 | if (acl_len != *pbuflen) { |
f96637be JP |
3927 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3928 | acl_len, *pbuflen); | |
630f3f0c SF |
3929 | if (*pbuflen > acl_len) |
3930 | *pbuflen = acl_len; | |
3931 | } | |
0a4b92c0 | 3932 | |
630f3f0c SF |
3933 | /* check if buffer is big enough for the acl |
3934 | header followed by the smallest SID */ | |
3935 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3936 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3937 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3938 | rc = -EINVAL; |
3939 | *pbuflen = 0; | |
3940 | } else { | |
f7f7c185 | 3941 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3942 | if (*acl_inf == NULL) { |
3943 | *pbuflen = 0; | |
3944 | rc = -ENOMEM; | |
3945 | } | |
630f3f0c | 3946 | } |
0a4b92c0 SF |
3947 | } |
3948 | qsec_out: | |
da502f7d | 3949 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3950 | return rc; |
3951 | } | |
97837582 SF |
3952 | |
3953 | int | |
6d5786a3 | 3954 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3955 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3956 | { |
3957 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3958 | int rc = 0; | |
3959 | int bytes_returned = 0; | |
3960 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3961 | void *pSMBr; |
97837582 SF |
3962 | |
3963 | setCifsAclRetry: | |
b2a3ad9c | 3964 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3965 | if (rc) |
b2a3ad9c | 3966 | return rc; |
97837582 SF |
3967 | |
3968 | pSMB->MaxSetupCount = 0; | |
3969 | pSMB->Reserved = 0; | |
3970 | ||
3971 | param_count = 8; | |
3972 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3973 | data_count = acllen; | |
3974 | data_offset = param_offset + param_count; | |
3975 | byte_count = 3 /* pad */ + param_count; | |
3976 | ||
3977 | pSMB->DataCount = cpu_to_le32(data_count); | |
3978 | pSMB->TotalDataCount = pSMB->DataCount; | |
3979 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3980 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3981 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3982 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3983 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3984 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3985 | pSMB->SetupCount = 0; | |
3986 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3987 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3988 | ||
3989 | pSMB->Fid = fid; /* file handle always le */ | |
3990 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3991 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3992 | |
3993 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3994 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3995 | data_offset, pntsd, acllen); | |
be8e3b00 | 3996 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3997 | } else |
be8e3b00 | 3998 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3999 | |
4000 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4001 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4002 | ||
f96637be JP |
4003 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
4004 | bytes_returned, rc); | |
97837582 | 4005 | if (rc) |
f96637be | 4006 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
4007 | cifs_buf_release(pSMB); |
4008 | ||
4009 | if (rc == -EAGAIN) | |
4010 | goto setCifsAclRetry; | |
4011 | ||
4012 | return (rc); | |
4013 | } | |
4014 | ||
79df1bae | 4015 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 4016 | |
6b8edfe0 SF |
4017 | /* Legacy Query Path Information call for lookup to old servers such |
4018 | as Win9x/WinME */ | |
68889f26 PS |
4019 | int |
4020 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
4021 | const char *search_name, FILE_ALL_INFO *data, | |
4022 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 4023 | { |
ad7a2926 SF |
4024 | QUERY_INFORMATION_REQ *pSMB; |
4025 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
4026 | int rc = 0; |
4027 | int bytes_returned; | |
4028 | int name_len; | |
4029 | ||
f96637be | 4030 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
4031 | QInfRetry: |
4032 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 4033 | (void **) &pSMBr); |
6b8edfe0 SF |
4034 | if (rc) |
4035 | return rc; | |
4036 | ||
4037 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4038 | name_len = | |
acbbb76a | 4039 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 4040 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4041 | remap); |
6b8edfe0 SF |
4042 | name_len++; /* trailing null */ |
4043 | name_len *= 2; | |
50c2f753 | 4044 | } else { |
68889f26 | 4045 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 4046 | name_len++; /* trailing null */ |
68889f26 | 4047 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
4048 | } |
4049 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4050 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4051 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4052 | pSMB->ByteCount = cpu_to_le16(name_len); |
4053 | ||
4054 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4055 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4056 | if (rc) { |
f96637be | 4057 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4058 | } else if (data) { |
1bd5bbcb SF |
4059 | struct timespec ts; |
4060 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
4061 | |
4062 | /* decode response */ | |
1bd5bbcb | 4063 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4064 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4065 | ts.tv_nsec = 0; |
4066 | ts.tv_sec = time; | |
4067 | /* decode time fields */ | |
68889f26 PS |
4068 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4069 | data->LastWriteTime = data->ChangeTime; | |
4070 | data->LastAccessTime = 0; | |
4071 | data->AllocationSize = | |
70ca734a | 4072 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4073 | data->EndOfFile = data->AllocationSize; |
4074 | data->Attributes = | |
70ca734a | 4075 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4076 | } else |
4077 | rc = -EIO; /* bad buffer passed in */ | |
4078 | ||
4079 | cifs_buf_release(pSMB); | |
4080 | ||
4081 | if (rc == -EAGAIN) | |
4082 | goto QInfRetry; | |
4083 | ||
4084 | return rc; | |
4085 | } | |
4086 | ||
bcd5357f | 4087 | int |
6d5786a3 | 4088 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4089 | u16 netfid, FILE_ALL_INFO *pFindData) |
4090 | { | |
4091 | struct smb_t2_qfi_req *pSMB = NULL; | |
4092 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4093 | int rc = 0; | |
4094 | int bytes_returned; | |
4095 | __u16 params, byte_count; | |
4096 | ||
4097 | QFileInfoRetry: | |
4098 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4099 | (void **) &pSMBr); | |
4100 | if (rc) | |
4101 | return rc; | |
4102 | ||
4103 | params = 2 /* level */ + 2 /* fid */; | |
4104 | pSMB->t2.TotalDataCount = 0; | |
4105 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4106 | /* BB find exact max data count below from sess structure BB */ | |
4107 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4108 | pSMB->t2.MaxSetupCount = 0; | |
4109 | pSMB->t2.Reserved = 0; | |
4110 | pSMB->t2.Flags = 0; | |
4111 | pSMB->t2.Timeout = 0; | |
4112 | pSMB->t2.Reserved2 = 0; | |
4113 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4114 | Fid) - 4); | |
4115 | pSMB->t2.DataCount = 0; | |
4116 | pSMB->t2.DataOffset = 0; | |
4117 | pSMB->t2.SetupCount = 1; | |
4118 | pSMB->t2.Reserved3 = 0; | |
4119 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4120 | byte_count = params + 1 /* pad */ ; | |
4121 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4122 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4123 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4124 | pSMB->Pad = 0; | |
4125 | pSMB->Fid = netfid; | |
be8e3b00 | 4126 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4127 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4128 | |
bcd5357f JL |
4129 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4130 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4131 | if (rc) { | |
ebcc943c | 4132 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4133 | } else { /* decode response */ |
4134 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4135 | |
bcd5357f JL |
4136 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4137 | rc = -EIO; | |
820a803f | 4138 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4139 | rc = -EIO; /* bad smb */ |
4140 | else if (pFindData) { | |
4141 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4142 | memcpy((char *) pFindData, | |
4143 | (char *) &pSMBr->hdr.Protocol + | |
4144 | data_offset, sizeof(FILE_ALL_INFO)); | |
4145 | } else | |
4146 | rc = -ENOMEM; | |
4147 | } | |
4148 | cifs_buf_release(pSMB); | |
4149 | if (rc == -EAGAIN) | |
4150 | goto QFileInfoRetry; | |
6b8edfe0 | 4151 | |
bcd5357f JL |
4152 | return rc; |
4153 | } | |
6b8edfe0 | 4154 | |
1da177e4 | 4155 | int |
6d5786a3 | 4156 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4157 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4158 | int legacy /* old style infolevel */, |
737b758c | 4159 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4160 | { |
68889f26 | 4161 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4162 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4163 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4164 | int rc = 0; | |
4165 | int bytes_returned; | |
4166 | int name_len; | |
4167 | __u16 params, byte_count; | |
4168 | ||
f96637be | 4169 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4170 | QPathInfoRetry: |
4171 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4172 | (void **) &pSMBr); | |
4173 | if (rc) | |
4174 | return rc; | |
4175 | ||
4176 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4177 | name_len = | |
68889f26 | 4178 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4179 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4180 | name_len++; /* trailing null */ |
4181 | name_len *= 2; | |
50c2f753 | 4182 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4183 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4184 | name_len++; /* trailing null */ |
68889f26 | 4185 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4186 | } |
4187 | ||
50c2f753 | 4188 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4189 | pSMB->TotalDataCount = 0; |
4190 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4191 | /* BB find exact max SMB PDU from sess structure BB */ |
4192 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4193 | pSMB->MaxSetupCount = 0; |
4194 | pSMB->Reserved = 0; | |
4195 | pSMB->Flags = 0; | |
4196 | pSMB->Timeout = 0; | |
4197 | pSMB->Reserved2 = 0; | |
4198 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4199 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4200 | pSMB->DataCount = 0; |
4201 | pSMB->DataOffset = 0; | |
4202 | pSMB->SetupCount = 1; | |
4203 | pSMB->Reserved3 = 0; | |
4204 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4205 | byte_count = params + 1 /* pad */ ; | |
4206 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4207 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4208 | if (legacy) |
acf1a1b1 SF |
4209 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4210 | else | |
4211 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4212 | pSMB->Reserved4 = 0; |
be8e3b00 | 4213 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4214 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4215 | ||
4216 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4217 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4218 | if (rc) { | |
f96637be | 4219 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4220 | } else { /* decode response */ |
4221 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4222 | ||
acf1a1b1 SF |
4223 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4224 | rc = -EIO; | |
820a803f | 4225 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4226 | rc = -EIO; /* bad smb */ |
820a803f | 4227 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4228 | rc = -EIO; /* 24 or 26 expected but we do not read |
4229 | last field */ | |
68889f26 | 4230 | else if (data) { |
acf1a1b1 | 4231 | int size; |
1da177e4 | 4232 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4233 | |
68889f26 PS |
4234 | /* |
4235 | * On legacy responses we do not read the last field, | |
4236 | * EAsize, fortunately since it varies by subdialect and | |
4237 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4238 | * bytes depending but we don't care here. | |
4239 | */ | |
ad7a2926 | 4240 | if (legacy) |
acf1a1b1 SF |
4241 | size = sizeof(FILE_INFO_STANDARD); |
4242 | else | |
4243 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4244 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4245 | data_offset, size); |
1da177e4 LT |
4246 | } else |
4247 | rc = -ENOMEM; | |
4248 | } | |
4249 | cifs_buf_release(pSMB); | |
4250 | if (rc == -EAGAIN) | |
4251 | goto QPathInfoRetry; | |
4252 | ||
4253 | return rc; | |
4254 | } | |
4255 | ||
c8634fd3 | 4256 | int |
6d5786a3 | 4257 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4258 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4259 | { | |
4260 | struct smb_t2_qfi_req *pSMB = NULL; | |
4261 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4262 | int rc = 0; | |
4263 | int bytes_returned; | |
4264 | __u16 params, byte_count; | |
4265 | ||
4266 | UnixQFileInfoRetry: | |
4267 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4268 | (void **) &pSMBr); | |
4269 | if (rc) | |
4270 | return rc; | |
4271 | ||
4272 | params = 2 /* level */ + 2 /* fid */; | |
4273 | pSMB->t2.TotalDataCount = 0; | |
4274 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4275 | /* BB find exact max data count below from sess structure BB */ | |
4276 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4277 | pSMB->t2.MaxSetupCount = 0; | |
4278 | pSMB->t2.Reserved = 0; | |
4279 | pSMB->t2.Flags = 0; | |
4280 | pSMB->t2.Timeout = 0; | |
4281 | pSMB->t2.Reserved2 = 0; | |
4282 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4283 | Fid) - 4); | |
4284 | pSMB->t2.DataCount = 0; | |
4285 | pSMB->t2.DataOffset = 0; | |
4286 | pSMB->t2.SetupCount = 1; | |
4287 | pSMB->t2.Reserved3 = 0; | |
4288 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4289 | byte_count = params + 1 /* pad */ ; | |
4290 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4291 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4292 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4293 | pSMB->Pad = 0; | |
4294 | pSMB->Fid = netfid; | |
be8e3b00 | 4295 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4296 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4297 | |
4298 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4299 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4300 | if (rc) { | |
ebcc943c | 4301 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4302 | } else { /* decode response */ |
4303 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4304 | ||
820a803f | 4305 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4306 | 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 |
4307 | rc = -EIO; /* bad smb */ |
4308 | } else { | |
4309 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4310 | memcpy((char *) pFindData, | |
4311 | (char *) &pSMBr->hdr.Protocol + | |
4312 | data_offset, | |
4313 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4314 | } | |
4315 | } | |
4316 | ||
4317 | cifs_buf_release(pSMB); | |
4318 | if (rc == -EAGAIN) | |
4319 | goto UnixQFileInfoRetry; | |
4320 | ||
4321 | return rc; | |
4322 | } | |
4323 | ||
1da177e4 | 4324 | int |
6d5786a3 | 4325 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4326 | const unsigned char *searchName, |
582d21e5 | 4327 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4328 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4329 | { |
4330 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4331 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4332 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4333 | int rc = 0; | |
4334 | int bytes_returned = 0; | |
4335 | int name_len; | |
4336 | __u16 params, byte_count; | |
4337 | ||
f96637be | 4338 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4339 | UnixQPathInfoRetry: |
4340 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4341 | (void **) &pSMBr); | |
4342 | if (rc) | |
4343 | return rc; | |
4344 | ||
4345 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4346 | name_len = | |
acbbb76a SF |
4347 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4348 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4349 | name_len++; /* trailing null */ |
4350 | name_len *= 2; | |
50c2f753 | 4351 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4352 | name_len = strnlen(searchName, PATH_MAX); |
4353 | name_len++; /* trailing null */ | |
4354 | strncpy(pSMB->FileName, searchName, name_len); | |
4355 | } | |
4356 | ||
50c2f753 | 4357 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4358 | pSMB->TotalDataCount = 0; |
4359 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4360 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4361 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4362 | pSMB->MaxSetupCount = 0; |
4363 | pSMB->Reserved = 0; | |
4364 | pSMB->Flags = 0; | |
4365 | pSMB->Timeout = 0; | |
4366 | pSMB->Reserved2 = 0; | |
4367 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4368 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4369 | pSMB->DataCount = 0; |
4370 | pSMB->DataOffset = 0; | |
4371 | pSMB->SetupCount = 1; | |
4372 | pSMB->Reserved3 = 0; | |
4373 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4374 | byte_count = params + 1 /* pad */ ; | |
4375 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4376 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4377 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4378 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4379 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4380 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4381 | ||
4382 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4383 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4384 | if (rc) { | |
ebcc943c | 4385 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4386 | } else { /* decode response */ |
4387 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4388 | ||
820a803f | 4389 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4390 | 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 |
4391 | rc = -EIO; /* bad smb */ |
4392 | } else { | |
4393 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4394 | memcpy((char *) pFindData, | |
4395 | (char *) &pSMBr->hdr.Protocol + | |
4396 | data_offset, | |
630f3f0c | 4397 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4398 | } |
4399 | } | |
4400 | cifs_buf_release(pSMB); | |
4401 | if (rc == -EAGAIN) | |
4402 | goto UnixQPathInfoRetry; | |
4403 | ||
4404 | return rc; | |
4405 | } | |
4406 | ||
1da177e4 LT |
4407 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4408 | int | |
6d5786a3 | 4409 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4410 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4411 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4412 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4413 | { |
4414 | /* level 257 SMB_ */ | |
4415 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4416 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4417 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4418 | int rc = 0; |
4419 | int bytes_returned = 0; | |
c052e2b4 | 4420 | int name_len, remap; |
1da177e4 | 4421 | __u16 params, byte_count; |
c052e2b4 | 4422 | struct nls_table *nls_codepage; |
1da177e4 | 4423 | |
f96637be | 4424 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4425 | |
4426 | findFirstRetry: | |
4427 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4428 | (void **) &pSMBr); | |
4429 | if (rc) | |
4430 | return rc; | |
4431 | ||
c052e2b4 | 4432 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4433 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4434 | |
1da177e4 LT |
4435 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4436 | name_len = | |
acbbb76a SF |
4437 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4438 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4439 | /* We can not add the asterik earlier in case |
4440 | it got remapped to 0xF03A as if it were part of the | |
4441 | directory name instead of a wildcard */ | |
1da177e4 | 4442 | name_len *= 2; |
c052e2b4 SP |
4443 | if (msearch) { |
4444 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4445 | pSMB->FileName[name_len+1] = 0; | |
4446 | pSMB->FileName[name_len+2] = '*'; | |
4447 | pSMB->FileName[name_len+3] = 0; | |
4448 | name_len += 4; /* now the trailing null */ | |
4449 | /* null terminate just in case */ | |
4450 | pSMB->FileName[name_len] = 0; | |
4451 | pSMB->FileName[name_len+1] = 0; | |
4452 | name_len += 2; | |
4453 | } | |
1da177e4 LT |
4454 | } else { /* BB add check for overrun of SMB buf BB */ |
4455 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4456 | /* BB fix here and in unicode clause above ie |
790fe579 | 4457 | if (name_len > buffersize-header) |
1da177e4 LT |
4458 | free buffer exit; BB */ |
4459 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4460 | if (msearch) { |
4461 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4462 | pSMB->FileName[name_len+1] = '*'; | |
4463 | pSMB->FileName[name_len+2] = 0; | |
4464 | name_len += 3; | |
4465 | } | |
1da177e4 LT |
4466 | } |
4467 | ||
4468 | params = 12 + name_len /* includes null */ ; | |
4469 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4470 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4471 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4472 | pSMB->MaxSetupCount = 0; |
4473 | pSMB->Reserved = 0; | |
4474 | pSMB->Flags = 0; | |
4475 | pSMB->Timeout = 0; | |
4476 | pSMB->Reserved2 = 0; | |
4477 | byte_count = params + 1 /* pad */ ; | |
4478 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4479 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4480 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4481 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4482 | - 4); | |
1da177e4 LT |
4483 | pSMB->DataCount = 0; |
4484 | pSMB->DataOffset = 0; | |
4485 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4486 | pSMB->Reserved3 = 0; | |
4487 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4488 | pSMB->SearchAttributes = | |
4489 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4490 | ATTR_DIRECTORY); | |
50c2f753 | 4491 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4492 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4493 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4494 | ||
4495 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4496 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4497 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4498 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4499 | ||
4500 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4501 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4502 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4503 | |
88274815 SF |
4504 | if (rc) {/* BB add logic to retry regular search if Unix search |
4505 | rejected unexpectedly by server */ | |
1da177e4 | 4506 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4507 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4508 | |
88274815 | 4509 | cifs_buf_release(pSMB); |
1da177e4 LT |
4510 | |
4511 | /* BB eventually could optimize out free and realloc of buf */ | |
4512 | /* for this case */ | |
4513 | if (rc == -EAGAIN) | |
4514 | goto findFirstRetry; | |
4515 | } else { /* decode response */ | |
4516 | /* BB remember to free buffer if error BB */ | |
4517 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4518 | if (rc == 0) { |
b77d753c SF |
4519 | unsigned int lnoff; |
4520 | ||
1da177e4 | 4521 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4522 | psrch_inf->unicode = true; |
1da177e4 | 4523 | else |
4b18f2a9 | 4524 | psrch_inf->unicode = false; |
1da177e4 LT |
4525 | |
4526 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4527 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4528 | psrch_inf->srch_entries_start = |
4529 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4530 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4531 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4532 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4533 | ||
790fe579 | 4534 | if (parms->EndofSearch) |
4b18f2a9 | 4535 | psrch_inf->endOfSearch = true; |
1da177e4 | 4536 | else |
4b18f2a9 | 4537 | psrch_inf->endOfSearch = false; |
1da177e4 | 4538 | |
50c2f753 SF |
4539 | psrch_inf->entries_in_buffer = |
4540 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4541 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4542 | psrch_inf->entries_in_buffer; |
b77d753c | 4543 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4544 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4545 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4546 | psrch_inf->last_entry = NULL; |
4547 | return rc; | |
4548 | } | |
4549 | ||
0752f152 | 4550 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4551 | lnoff; |
4552 | ||
c052e2b4 SP |
4553 | if (pnetfid) |
4554 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4555 | } else { |
4556 | cifs_buf_release(pSMB); | |
4557 | } | |
4558 | } | |
4559 | ||
4560 | return rc; | |
4561 | } | |
4562 | ||
6d5786a3 PS |
4563 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4564 | __u16 searchHandle, __u16 search_flags, | |
4565 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4566 | { |
4567 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4568 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4569 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4570 | char *response_data; |
4571 | int rc = 0; | |
9438fabb JL |
4572 | int bytes_returned; |
4573 | unsigned int name_len; | |
1da177e4 LT |
4574 | __u16 params, byte_count; |
4575 | ||
f96637be | 4576 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4577 | |
4b18f2a9 | 4578 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4579 | return -ENOENT; |
4580 | ||
4581 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4582 | (void **) &pSMBr); | |
4583 | if (rc) | |
4584 | return rc; | |
4585 | ||
50c2f753 | 4586 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4587 | byte_count = 0; |
4588 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4589 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4590 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4591 | pSMB->MaxSetupCount = 0; |
4592 | pSMB->Reserved = 0; | |
4593 | pSMB->Flags = 0; | |
4594 | pSMB->Timeout = 0; | |
4595 | pSMB->Reserved2 = 0; | |
4596 | pSMB->ParameterOffset = cpu_to_le16( | |
4597 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4598 | pSMB->DataCount = 0; | |
4599 | pSMB->DataOffset = 0; | |
4600 | pSMB->SetupCount = 1; | |
4601 | pSMB->Reserved3 = 0; | |
4602 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4603 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4604 | pSMB->SearchCount = | |
630f3f0c | 4605 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4606 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4607 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4608 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4609 | |
4610 | name_len = psrch_inf->resume_name_len; | |
4611 | params += name_len; | |
790fe579 | 4612 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4613 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4614 | byte_count += name_len; | |
ef6724e3 SF |
4615 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4616 | pSMB->ResumeFileName[name_len] = 0; | |
4617 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4618 | } else { |
4619 | rc = -EINVAL; | |
4620 | goto FNext2_err_exit; | |
4621 | } | |
4622 | byte_count = params + 1 /* pad */ ; | |
4623 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4624 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4625 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4626 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4627 | |
1da177e4 LT |
4628 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4629 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4630 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4631 | if (rc) { |
4632 | if (rc == -EBADF) { | |
4b18f2a9 | 4633 | psrch_inf->endOfSearch = true; |
6353450a | 4634 | cifs_buf_release(pSMB); |
50c2f753 | 4635 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4636 | } else |
f96637be | 4637 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4638 | } else { /* decode response */ |
4639 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4640 | |
790fe579 | 4641 | if (rc == 0) { |
b77d753c SF |
4642 | unsigned int lnoff; |
4643 | ||
1da177e4 LT |
4644 | /* BB fixme add lock for file (srch_info) struct here */ |
4645 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4646 | psrch_inf->unicode = true; |
1da177e4 | 4647 | else |
4b18f2a9 | 4648 | psrch_inf->unicode = false; |
1da177e4 LT |
4649 | response_data = (char *) &pSMBr->hdr.Protocol + |
4650 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4651 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4652 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4653 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4654 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4655 | cifs_small_buf_release( |
4656 | psrch_inf->ntwrk_buf_start); | |
4657 | else | |
4658 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4659 | psrch_inf->srch_entries_start = response_data; |
4660 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4661 | psrch_inf->smallBuf = 0; |
790fe579 | 4662 | if (parms->EndofSearch) |
4b18f2a9 | 4663 | psrch_inf->endOfSearch = true; |
1da177e4 | 4664 | else |
4b18f2a9 | 4665 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4666 | psrch_inf->entries_in_buffer = |
4667 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4668 | psrch_inf->index_of_last_entry += |
4669 | psrch_inf->entries_in_buffer; | |
b77d753c | 4670 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4671 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4672 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4673 | psrch_inf->last_entry = NULL; |
4674 | return rc; | |
4675 | } else | |
4676 | psrch_inf->last_entry = | |
4677 | psrch_inf->srch_entries_start + lnoff; | |
4678 | ||
f96637be JP |
4679 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4680 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4681 | |
4682 | /* BB fixme add unlock here */ | |
4683 | } | |
4684 | ||
4685 | } | |
4686 | ||
4687 | /* BB On error, should we leave previous search buf (and count and | |
4688 | last entry fields) intact or free the previous one? */ | |
4689 | ||
4690 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4691 | since file handle passed in no longer valid */ | |
4692 | FNext2_err_exit: | |
4693 | if (rc != 0) | |
4694 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4695 | return rc; |
4696 | } | |
4697 | ||
4698 | int | |
6d5786a3 | 4699 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4700 | const __u16 searchHandle) |
1da177e4 LT |
4701 | { |
4702 | int rc = 0; | |
4703 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4704 | |
f96637be | 4705 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4706 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4707 | ||
4708 | /* no sense returning error if session restarted | |
4709 | as file handle has been closed */ | |
790fe579 | 4710 | if (rc == -EAGAIN) |
1da177e4 LT |
4711 | return 0; |
4712 | if (rc) | |
4713 | return rc; | |
4714 | ||
1da177e4 LT |
4715 | pSMB->FileID = searchHandle; |
4716 | pSMB->ByteCount = 0; | |
792af7b0 | 4717 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4718 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4719 | if (rc) |
f96637be | 4720 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4721 | |
44c58186 | 4722 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4723 | |
4724 | /* Since session is dead, search handle closed on server already */ | |
4725 | if (rc == -EAGAIN) | |
4726 | rc = 0; | |
4727 | ||
4728 | return rc; | |
4729 | } | |
4730 | ||
1da177e4 | 4731 | int |
6d5786a3 | 4732 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4733 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4734 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4735 | { |
4736 | int rc = 0; | |
4737 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4738 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4739 | int name_len, bytes_returned; | |
4740 | __u16 params, byte_count; | |
4741 | ||
f96637be | 4742 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4743 | if (tcon == NULL) |
50c2f753 | 4744 | return -ENODEV; |
1da177e4 LT |
4745 | |
4746 | GetInodeNumberRetry: | |
4747 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4748 | (void **) &pSMBr); |
1da177e4 LT |
4749 | if (rc) |
4750 | return rc; | |
4751 | ||
1da177e4 LT |
4752 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4753 | name_len = | |
acbbb76a | 4754 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4755 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4756 | remap); |
1da177e4 LT |
4757 | name_len++; /* trailing null */ |
4758 | name_len *= 2; | |
50c2f753 | 4759 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4760 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4761 | name_len++; /* trailing null */ |
1208ef1f | 4762 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4763 | } |
4764 | ||
4765 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4766 | pSMB->TotalDataCount = 0; | |
4767 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4768 | /* BB find exact max data count below from sess structure BB */ | |
4769 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4770 | pSMB->MaxSetupCount = 0; | |
4771 | pSMB->Reserved = 0; | |
4772 | pSMB->Flags = 0; | |
4773 | pSMB->Timeout = 0; | |
4774 | pSMB->Reserved2 = 0; | |
4775 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4776 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4777 | pSMB->DataCount = 0; |
4778 | pSMB->DataOffset = 0; | |
4779 | pSMB->SetupCount = 1; | |
4780 | pSMB->Reserved3 = 0; | |
4781 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4782 | byte_count = params + 1 /* pad */ ; | |
4783 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4784 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4785 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4786 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4787 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4788 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4789 | ||
4790 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4791 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4792 | if (rc) { | |
f96637be | 4793 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4794 | } else { |
4795 | /* decode response */ | |
4796 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4797 | /* BB also check enough total bytes returned */ |
820a803f | 4798 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4799 | /* If rc should we check for EOPNOSUPP and |
4800 | disable the srvino flag? or in caller? */ | |
4801 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4802 | else { |
1da177e4 LT |
4803 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4804 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4805 | struct file_internal_info *pfinfo; |
1da177e4 | 4806 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4807 | if (count < 8) { |
f96637be | 4808 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4809 | rc = -EIO; |
4810 | goto GetInodeNumOut; | |
4811 | } | |
4812 | pfinfo = (struct file_internal_info *) | |
4813 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4814 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4815 | } |
4816 | } | |
4817 | GetInodeNumOut: | |
4818 | cifs_buf_release(pSMB); | |
4819 | if (rc == -EAGAIN) | |
4820 | goto GetInodeNumberRetry; | |
4821 | return rc; | |
4822 | } | |
1da177e4 LT |
4823 | |
4824 | int | |
6d5786a3 | 4825 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4826 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4827 | unsigned int *num_of_nodes, |
737b758c | 4828 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4829 | { |
4830 | /* TRANS2_GET_DFS_REFERRAL */ | |
4831 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4832 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4833 | int rc = 0; |
4834 | int bytes_returned; | |
4835 | int name_len; | |
1da177e4 | 4836 | __u16 params, byte_count; |
c2cf07d5 SF |
4837 | *num_of_nodes = 0; |
4838 | *target_nodes = NULL; | |
1da177e4 | 4839 | |
f96637be | 4840 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4841 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4842 | return -ENODEV; |
b327a717 | 4843 | |
1da177e4 | 4844 | getDFSRetry: |
b327a717 | 4845 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4846 | (void **) &pSMBr); |
4847 | if (rc) | |
4848 | return rc; | |
50c2f753 SF |
4849 | |
4850 | /* server pointer checked in called function, | |
1982c344 | 4851 | but should never be null here anyway */ |
88257360 | 4852 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4853 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4854 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4855 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4856 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4857 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4858 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4859 | |
4860 | if (ses->capabilities & CAP_UNICODE) { | |
4861 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4862 | name_len = | |
acbbb76a | 4863 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4864 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4865 | remap); |
1da177e4 LT |
4866 | name_len++; /* trailing null */ |
4867 | name_len *= 2; | |
50c2f753 | 4868 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4869 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4870 | name_len++; /* trailing null */ |
b669f33c | 4871 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4872 | } |
4873 | ||
65c3b205 | 4874 | if (ses->server->sign) |
38d77c50 | 4875 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4876 | |
50c2f753 | 4877 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4878 | |
1da177e4 LT |
4879 | params = 2 /* level */ + name_len /*includes null */ ; |
4880 | pSMB->TotalDataCount = 0; | |
4881 | pSMB->DataCount = 0; | |
4882 | pSMB->DataOffset = 0; | |
4883 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4884 | /* BB find exact max SMB PDU from sess structure BB */ |
4885 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4886 | pSMB->MaxSetupCount = 0; |
4887 | pSMB->Reserved = 0; | |
4888 | pSMB->Flags = 0; | |
4889 | pSMB->Timeout = 0; | |
4890 | pSMB->Reserved2 = 0; | |
4891 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4892 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4893 | pSMB->SetupCount = 1; |
4894 | pSMB->Reserved3 = 0; | |
4895 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4896 | byte_count = params + 3 /* pad */ ; | |
4897 | pSMB->ParameterCount = cpu_to_le16(params); | |
4898 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4899 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4900 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4901 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4902 | ||
4903 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4904 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4905 | if (rc) { | |
f96637be | 4906 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4907 | goto GetDFSRefExit; |
4908 | } | |
4909 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4910 | |
c2cf07d5 | 4911 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4912 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4913 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4914 | goto GetDFSRefExit; |
4915 | } | |
c2cf07d5 | 4916 | |
f96637be JP |
4917 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4918 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4919 | |
fec4585f | 4920 | /* parse returned result into more usable form */ |
4ecce920 AA |
4921 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4922 | le16_to_cpu(pSMBr->t2.DataCount), | |
4923 | num_of_nodes, target_nodes, nls_codepage, | |
4924 | remap, search_name, | |
284316dd | 4925 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4926 | |
1da177e4 | 4927 | GetDFSRefExit: |
0d817bc0 | 4928 | cifs_buf_release(pSMB); |
1da177e4 LT |
4929 | |
4930 | if (rc == -EAGAIN) | |
4931 | goto getDFSRetry; | |
4932 | ||
4933 | return rc; | |
4934 | } | |
4935 | ||
20962438 SF |
4936 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4937 | int | |
6d5786a3 PS |
4938 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4939 | struct kstatfs *FSData) | |
20962438 SF |
4940 | { |
4941 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4942 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4943 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4944 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4945 | int rc = 0; | |
4946 | int bytes_returned = 0; | |
4947 | __u16 params, byte_count; | |
4948 | ||
f96637be | 4949 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4950 | oldQFSInfoRetry: |
4951 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4952 | (void **) &pSMBr); | |
4953 | if (rc) | |
4954 | return rc; | |
20962438 SF |
4955 | |
4956 | params = 2; /* level */ | |
4957 | pSMB->TotalDataCount = 0; | |
4958 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4959 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4960 | pSMB->MaxSetupCount = 0; | |
4961 | pSMB->Reserved = 0; | |
4962 | pSMB->Flags = 0; | |
4963 | pSMB->Timeout = 0; | |
4964 | pSMB->Reserved2 = 0; | |
4965 | byte_count = params + 1 /* pad */ ; | |
4966 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4967 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4968 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4969 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4970 | pSMB->DataCount = 0; | |
4971 | pSMB->DataOffset = 0; | |
4972 | pSMB->SetupCount = 1; | |
4973 | pSMB->Reserved3 = 0; | |
4974 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4975 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4976 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4977 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4978 | ||
4979 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4980 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4981 | if (rc) { | |
f96637be | 4982 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4983 | } else { /* decode response */ |
4984 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4985 | ||
820a803f | 4986 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4987 | rc = -EIO; /* bad smb */ |
4988 | else { | |
4989 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4990 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4991 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4992 | |
50c2f753 | 4993 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4994 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4995 | FSData->f_bsize = | |
4996 | le16_to_cpu(response_data->BytesPerSector) * | |
4997 | le32_to_cpu(response_data-> | |
4998 | SectorsPerAllocationUnit); | |
4999 | FSData->f_blocks = | |
50c2f753 | 5000 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
5001 | FSData->f_bfree = FSData->f_bavail = |
5002 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5003 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5004 | (unsigned long long)FSData->f_blocks, | |
5005 | (unsigned long long)FSData->f_bfree, | |
5006 | FSData->f_bsize); | |
20962438 SF |
5007 | } |
5008 | } | |
5009 | cifs_buf_release(pSMB); | |
5010 | ||
5011 | if (rc == -EAGAIN) | |
5012 | goto oldQFSInfoRetry; | |
5013 | ||
5014 | return rc; | |
5015 | } | |
5016 | ||
1da177e4 | 5017 | int |
6d5786a3 PS |
5018 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5019 | struct kstatfs *FSData) | |
1da177e4 LT |
5020 | { |
5021 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5022 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5023 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5024 | FILE_SYSTEM_INFO *response_data; | |
5025 | int rc = 0; | |
5026 | int bytes_returned = 0; | |
5027 | __u16 params, byte_count; | |
5028 | ||
f96637be | 5029 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5030 | QFSInfoRetry: |
5031 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5032 | (void **) &pSMBr); | |
5033 | if (rc) | |
5034 | return rc; | |
5035 | ||
5036 | params = 2; /* level */ | |
5037 | pSMB->TotalDataCount = 0; | |
5038 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5039 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5040 | pSMB->MaxSetupCount = 0; |
5041 | pSMB->Reserved = 0; | |
5042 | pSMB->Flags = 0; | |
5043 | pSMB->Timeout = 0; | |
5044 | pSMB->Reserved2 = 0; | |
5045 | byte_count = params + 1 /* pad */ ; | |
5046 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5047 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5048 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5049 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5050 | pSMB->DataCount = 0; |
5051 | pSMB->DataOffset = 0; | |
5052 | pSMB->SetupCount = 1; | |
5053 | pSMB->Reserved3 = 0; | |
5054 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5055 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5056 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5057 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5058 | ||
5059 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5060 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5061 | if (rc) { | |
f96637be | 5062 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5063 | } else { /* decode response */ |
50c2f753 | 5064 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5065 | |
820a803f | 5066 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5067 | rc = -EIO; /* bad smb */ |
5068 | else { | |
5069 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5070 | |
5071 | response_data = | |
5072 | (FILE_SYSTEM_INFO | |
5073 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5074 | data_offset); | |
5075 | FSData->f_bsize = | |
5076 | le32_to_cpu(response_data->BytesPerSector) * | |
5077 | le32_to_cpu(response_data-> | |
5078 | SectorsPerAllocationUnit); | |
5079 | FSData->f_blocks = | |
5080 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5081 | FSData->f_bfree = FSData->f_bavail = | |
5082 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5083 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5084 | (unsigned long long)FSData->f_blocks, | |
5085 | (unsigned long long)FSData->f_bfree, | |
5086 | FSData->f_bsize); | |
1da177e4 LT |
5087 | } |
5088 | } | |
5089 | cifs_buf_release(pSMB); | |
5090 | ||
5091 | if (rc == -EAGAIN) | |
5092 | goto QFSInfoRetry; | |
5093 | ||
5094 | return rc; | |
5095 | } | |
5096 | ||
5097 | int | |
6d5786a3 | 5098 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5099 | { |
5100 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5101 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5102 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5103 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5104 | int rc = 0; | |
5105 | int bytes_returned = 0; | |
5106 | __u16 params, byte_count; | |
5107 | ||
f96637be | 5108 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5109 | QFSAttributeRetry: |
5110 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5111 | (void **) &pSMBr); | |
5112 | if (rc) | |
5113 | return rc; | |
5114 | ||
5115 | params = 2; /* level */ | |
5116 | pSMB->TotalDataCount = 0; | |
5117 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5118 | /* BB find exact max SMB PDU from sess structure BB */ |
5119 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5120 | pSMB->MaxSetupCount = 0; |
5121 | pSMB->Reserved = 0; | |
5122 | pSMB->Flags = 0; | |
5123 | pSMB->Timeout = 0; | |
5124 | pSMB->Reserved2 = 0; | |
5125 | byte_count = params + 1 /* pad */ ; | |
5126 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5127 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5128 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5129 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5130 | pSMB->DataCount = 0; |
5131 | pSMB->DataOffset = 0; | |
5132 | pSMB->SetupCount = 1; | |
5133 | pSMB->Reserved3 = 0; | |
5134 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5135 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5136 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5137 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5138 | ||
5139 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5140 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5141 | if (rc) { | |
f96637be | 5142 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5143 | } else { /* decode response */ |
5144 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5145 | ||
820a803f | 5146 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5147 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5148 | rc = -EIO; /* bad smb */ |
5149 | } else { | |
5150 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5151 | response_data = | |
5152 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5153 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5154 | data_offset); | |
5155 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5156 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5157 | } |
5158 | } | |
5159 | cifs_buf_release(pSMB); | |
5160 | ||
5161 | if (rc == -EAGAIN) | |
5162 | goto QFSAttributeRetry; | |
5163 | ||
5164 | return rc; | |
5165 | } | |
5166 | ||
5167 | int | |
6d5786a3 | 5168 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5169 | { |
5170 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5171 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5172 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5173 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5174 | int rc = 0; | |
5175 | int bytes_returned = 0; | |
5176 | __u16 params, byte_count; | |
5177 | ||
f96637be | 5178 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5179 | QFSDeviceRetry: |
5180 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5181 | (void **) &pSMBr); | |
5182 | if (rc) | |
5183 | return rc; | |
5184 | ||
5185 | params = 2; /* level */ | |
5186 | pSMB->TotalDataCount = 0; | |
5187 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5188 | /* BB find exact max SMB PDU from sess structure BB */ |
5189 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5190 | pSMB->MaxSetupCount = 0; |
5191 | pSMB->Reserved = 0; | |
5192 | pSMB->Flags = 0; | |
5193 | pSMB->Timeout = 0; | |
5194 | pSMB->Reserved2 = 0; | |
5195 | byte_count = params + 1 /* pad */ ; | |
5196 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5197 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5198 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5199 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5200 | |
5201 | pSMB->DataCount = 0; | |
5202 | pSMB->DataOffset = 0; | |
5203 | pSMB->SetupCount = 1; | |
5204 | pSMB->Reserved3 = 0; | |
5205 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5206 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5207 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5208 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5209 | ||
5210 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5211 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5212 | if (rc) { | |
f96637be | 5213 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5214 | } else { /* decode response */ |
5215 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5216 | ||
820a803f JL |
5217 | if (rc || get_bcc(&pSMBr->hdr) < |
5218 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5219 | rc = -EIO; /* bad smb */ |
5220 | else { | |
5221 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5222 | response_data = | |
737b758c SF |
5223 | (FILE_SYSTEM_DEVICE_INFO *) |
5224 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5225 | data_offset); |
5226 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5227 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5228 | } |
5229 | } | |
5230 | cifs_buf_release(pSMB); | |
5231 | ||
5232 | if (rc == -EAGAIN) | |
5233 | goto QFSDeviceRetry; | |
5234 | ||
5235 | return rc; | |
5236 | } | |
5237 | ||
5238 | int | |
6d5786a3 | 5239 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5240 | { |
5241 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5242 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5243 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5244 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5245 | int rc = 0; | |
5246 | int bytes_returned = 0; | |
5247 | __u16 params, byte_count; | |
5248 | ||
f96637be | 5249 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5250 | QFSUnixRetry: |
f569599a JL |
5251 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5252 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5253 | if (rc) |
5254 | return rc; | |
5255 | ||
5256 | params = 2; /* level */ | |
5257 | pSMB->TotalDataCount = 0; | |
5258 | pSMB->DataCount = 0; | |
5259 | pSMB->DataOffset = 0; | |
5260 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5261 | /* BB find exact max SMB PDU from sess structure BB */ |
5262 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5263 | pSMB->MaxSetupCount = 0; |
5264 | pSMB->Reserved = 0; | |
5265 | pSMB->Flags = 0; | |
5266 | pSMB->Timeout = 0; | |
5267 | pSMB->Reserved2 = 0; | |
5268 | byte_count = params + 1 /* pad */ ; | |
5269 | pSMB->ParameterCount = cpu_to_le16(params); | |
5270 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5271 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5272 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5273 | pSMB->SetupCount = 1; |
5274 | pSMB->Reserved3 = 0; | |
5275 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5276 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5277 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5278 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5279 | ||
5280 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5281 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5282 | if (rc) { | |
f96637be | 5283 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5284 | } else { /* decode response */ |
5285 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5286 | ||
820a803f | 5287 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5288 | rc = -EIO; /* bad smb */ |
5289 | } else { | |
5290 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5291 | response_data = | |
5292 | (FILE_SYSTEM_UNIX_INFO | |
5293 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5294 | data_offset); | |
5295 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5296 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5297 | } |
5298 | } | |
5299 | cifs_buf_release(pSMB); | |
5300 | ||
5301 | if (rc == -EAGAIN) | |
5302 | goto QFSUnixRetry; | |
5303 | ||
5304 | ||
5305 | return rc; | |
5306 | } | |
5307 | ||
ac67055e | 5308 | int |
6d5786a3 | 5309 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5310 | { |
5311 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5312 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5313 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5314 | int rc = 0; | |
5315 | int bytes_returned = 0; | |
5316 | __u16 params, param_offset, offset, byte_count; | |
5317 | ||
f96637be | 5318 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5319 | SETFSUnixRetry: |
f26282c9 | 5320 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5321 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5322 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5323 | if (rc) |
5324 | return rc; | |
5325 | ||
5326 | params = 4; /* 2 bytes zero followed by info level. */ | |
5327 | pSMB->MaxSetupCount = 0; | |
5328 | pSMB->Reserved = 0; | |
5329 | pSMB->Flags = 0; | |
5330 | pSMB->Timeout = 0; | |
5331 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5332 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5333 | - 4; | |
ac67055e JA |
5334 | offset = param_offset + params; |
5335 | ||
5336 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5337 | /* BB find exact max SMB PDU from sess structure BB */ |
5338 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5339 | pSMB->SetupCount = 1; |
5340 | pSMB->Reserved3 = 0; | |
5341 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5342 | byte_count = 1 /* pad */ + params + 12; | |
5343 | ||
5344 | pSMB->DataCount = cpu_to_le16(12); | |
5345 | pSMB->ParameterCount = cpu_to_le16(params); | |
5346 | pSMB->TotalDataCount = pSMB->DataCount; | |
5347 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5348 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5349 | pSMB->DataOffset = cpu_to_le16(offset); | |
5350 | ||
5351 | /* Params. */ | |
5352 | pSMB->FileNum = 0; | |
5353 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5354 | ||
5355 | /* Data. */ | |
5356 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5357 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5358 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5359 | ||
be8e3b00 | 5360 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5361 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5362 | ||
5363 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5364 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5365 | if (rc) { | |
f96637be | 5366 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5367 | } else { /* decode response */ |
5368 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5369 | if (rc) |
ac67055e | 5370 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5371 | } |
5372 | cifs_buf_release(pSMB); | |
5373 | ||
5374 | if (rc == -EAGAIN) | |
5375 | goto SETFSUnixRetry; | |
5376 | ||
5377 | return rc; | |
5378 | } | |
5379 | ||
5380 | ||
1da177e4 LT |
5381 | |
5382 | int | |
6d5786a3 | 5383 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5384 | struct kstatfs *FSData) |
1da177e4 LT |
5385 | { |
5386 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5387 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5388 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5389 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5390 | int rc = 0; | |
5391 | int bytes_returned = 0; | |
5392 | __u16 params, byte_count; | |
5393 | ||
f96637be | 5394 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5395 | QFSPosixRetry: |
5396 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5397 | (void **) &pSMBr); | |
5398 | if (rc) | |
5399 | return rc; | |
5400 | ||
5401 | params = 2; /* level */ | |
5402 | pSMB->TotalDataCount = 0; | |
5403 | pSMB->DataCount = 0; | |
5404 | pSMB->DataOffset = 0; | |
5405 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5406 | /* BB find exact max SMB PDU from sess structure BB */ |
5407 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5408 | pSMB->MaxSetupCount = 0; |
5409 | pSMB->Reserved = 0; | |
5410 | pSMB->Flags = 0; | |
5411 | pSMB->Timeout = 0; | |
5412 | pSMB->Reserved2 = 0; | |
5413 | byte_count = params + 1 /* pad */ ; | |
5414 | pSMB->ParameterCount = cpu_to_le16(params); | |
5415 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5416 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5417 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5418 | pSMB->SetupCount = 1; |
5419 | pSMB->Reserved3 = 0; | |
5420 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5421 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5422 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5423 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5424 | ||
5425 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5426 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5427 | if (rc) { | |
f96637be | 5428 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5429 | } else { /* decode response */ |
5430 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5431 | ||
820a803f | 5432 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5433 | rc = -EIO; /* bad smb */ |
5434 | } else { | |
5435 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5436 | response_data = | |
5437 | (FILE_SYSTEM_POSIX_INFO | |
5438 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5439 | data_offset); | |
5440 | FSData->f_bsize = | |
5441 | le32_to_cpu(response_data->BlockSize); | |
5442 | FSData->f_blocks = | |
5443 | le64_to_cpu(response_data->TotalBlocks); | |
5444 | FSData->f_bfree = | |
5445 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5446 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5447 | FSData->f_bavail = FSData->f_bfree; |
5448 | } else { | |
5449 | FSData->f_bavail = | |
50c2f753 | 5450 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5451 | } |
790fe579 | 5452 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5453 | FSData->f_files = |
50c2f753 | 5454 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5455 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5456 | FSData->f_ffree = |
50c2f753 | 5457 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5458 | } |
5459 | } | |
5460 | cifs_buf_release(pSMB); | |
5461 | ||
5462 | if (rc == -EAGAIN) | |
5463 | goto QFSPosixRetry; | |
5464 | ||
5465 | return rc; | |
5466 | } | |
5467 | ||
5468 | ||
d1433418 PS |
5469 | /* |
5470 | * We can not use write of zero bytes trick to set file size due to need for | |
5471 | * large file support. Also note that this SetPathInfo is preferred to | |
5472 | * SetFileInfo based method in next routine which is only needed to work around | |
5473 | * a sharing violation bugin Samba which this routine can run into. | |
5474 | */ | |
1da177e4 | 5475 | int |
6d5786a3 | 5476 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5477 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5478 | bool set_allocation) | |
1da177e4 LT |
5479 | { |
5480 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5481 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5482 | struct file_end_of_file_info *parm_data; | |
5483 | int name_len; | |
5484 | int rc = 0; | |
5485 | int bytes_returned = 0; | |
2baa2682 | 5486 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5487 | |
1da177e4 LT |
5488 | __u16 params, byte_count, data_count, param_offset, offset; |
5489 | ||
f96637be | 5490 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5491 | SetEOFRetry: |
5492 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5493 | (void **) &pSMBr); | |
5494 | if (rc) | |
5495 | return rc; | |
5496 | ||
5497 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5498 | name_len = | |
d1433418 PS |
5499 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5500 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5501 | name_len++; /* trailing null */ |
5502 | name_len *= 2; | |
3e87d803 | 5503 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5504 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5505 | name_len++; /* trailing null */ |
d1433418 | 5506 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5507 | } |
5508 | params = 6 + name_len; | |
26f57364 | 5509 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5510 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5511 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5512 | pSMB->MaxSetupCount = 0; |
5513 | pSMB->Reserved = 0; | |
5514 | pSMB->Flags = 0; | |
5515 | pSMB->Timeout = 0; | |
5516 | pSMB->Reserved2 = 0; | |
5517 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5518 | InformationLevel) - 4; |
1da177e4 | 5519 | offset = param_offset + params; |
d1433418 | 5520 | if (set_allocation) { |
50c2f753 SF |
5521 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5522 | pSMB->InformationLevel = | |
5523 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5524 | else | |
5525 | pSMB->InformationLevel = | |
5526 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5527 | } else /* Set File Size */ { | |
1da177e4 LT |
5528 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5529 | pSMB->InformationLevel = | |
50c2f753 | 5530 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5531 | else |
5532 | pSMB->InformationLevel = | |
50c2f753 | 5533 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5534 | } |
5535 | ||
5536 | parm_data = | |
5537 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5538 | offset); | |
5539 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5540 | pSMB->DataOffset = cpu_to_le16(offset); | |
5541 | pSMB->SetupCount = 1; | |
5542 | pSMB->Reserved3 = 0; | |
5543 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5544 | byte_count = 3 /* pad */ + params + data_count; | |
5545 | pSMB->DataCount = cpu_to_le16(data_count); | |
5546 | pSMB->TotalDataCount = pSMB->DataCount; | |
5547 | pSMB->ParameterCount = cpu_to_le16(params); | |
5548 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5549 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5550 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5551 | parm_data->FileSize = cpu_to_le64(size); |
5552 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5553 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5554 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5555 | if (rc) |
f96637be | 5556 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5557 | |
5558 | cifs_buf_release(pSMB); | |
5559 | ||
5560 | if (rc == -EAGAIN) | |
5561 | goto SetEOFRetry; | |
5562 | ||
5563 | return rc; | |
5564 | } | |
5565 | ||
5566 | int | |
d1433418 PS |
5567 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5568 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5569 | { |
5570 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5571 | struct file_end_of_file_info *parm_data; |
5572 | int rc = 0; | |
1da177e4 LT |
5573 | __u16 params, param_offset, offset, byte_count, count; |
5574 | ||
f96637be JP |
5575 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5576 | (long long)size); | |
cd63499c SF |
5577 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5578 | ||
1da177e4 LT |
5579 | if (rc) |
5580 | return rc; | |
5581 | ||
d1433418 PS |
5582 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5583 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5584 | |
1da177e4 LT |
5585 | params = 6; |
5586 | pSMB->MaxSetupCount = 0; | |
5587 | pSMB->Reserved = 0; | |
5588 | pSMB->Flags = 0; | |
5589 | pSMB->Timeout = 0; | |
5590 | pSMB->Reserved2 = 0; | |
5591 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5592 | offset = param_offset + params; | |
5593 | ||
1da177e4 LT |
5594 | count = sizeof(struct file_end_of_file_info); |
5595 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5596 | /* BB find exact max SMB PDU from sess structure BB */ |
5597 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5598 | pSMB->SetupCount = 1; |
5599 | pSMB->Reserved3 = 0; | |
5600 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5601 | byte_count = 3 /* pad */ + params + count; | |
5602 | pSMB->DataCount = cpu_to_le16(count); | |
5603 | pSMB->ParameterCount = cpu_to_le16(params); | |
5604 | pSMB->TotalDataCount = pSMB->DataCount; | |
5605 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5606 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5607 | parm_data = | |
50c2f753 SF |
5608 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5609 | + offset); | |
1da177e4 LT |
5610 | pSMB->DataOffset = cpu_to_le16(offset); |
5611 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5612 | pSMB->Fid = cfile->fid.netfid; |
5613 | if (set_allocation) { | |
1da177e4 LT |
5614 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5615 | pSMB->InformationLevel = | |
5616 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5617 | else | |
5618 | pSMB->InformationLevel = | |
5619 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5620 | } else /* Set File Size */ { |
1da177e4 LT |
5621 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5622 | pSMB->InformationLevel = | |
50c2f753 | 5623 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5624 | else |
5625 | pSMB->InformationLevel = | |
50c2f753 | 5626 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5627 | } |
5628 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5629 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5630 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5631 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5632 | cifs_small_buf_release(pSMB); |
1da177e4 | 5633 | if (rc) { |
f96637be JP |
5634 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5635 | rc); | |
1da177e4 LT |
5636 | } |
5637 | ||
50c2f753 | 5638 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5639 | since file handle passed in no longer valid */ |
5640 | ||
5641 | return rc; | |
5642 | } | |
5643 | ||
50c2f753 | 5644 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5645 | an open handle, rather than by pathname - this is awkward due to |
5646 | potential access conflicts on the open, but it is unavoidable for these | |
5647 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5648 | time and resort to the original setpathinfo level which takes the ancient | |
5649 | DOS time format with 2 second granularity */ | |
5650 | int | |
6d5786a3 | 5651 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5652 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5653 | { |
5654 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5655 | char *data_offset; |
5656 | int rc = 0; | |
1da177e4 LT |
5657 | __u16 params, param_offset, offset, byte_count, count; |
5658 | ||
f96637be | 5659 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5660 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5661 | ||
1da177e4 LT |
5662 | if (rc) |
5663 | return rc; | |
5664 | ||
2dd2dfa0 JL |
5665 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5666 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5667 | |
1da177e4 LT |
5668 | params = 6; |
5669 | pSMB->MaxSetupCount = 0; | |
5670 | pSMB->Reserved = 0; | |
5671 | pSMB->Flags = 0; | |
5672 | pSMB->Timeout = 0; | |
5673 | pSMB->Reserved2 = 0; | |
5674 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5675 | offset = param_offset + params; | |
5676 | ||
b2a3ad9c JL |
5677 | data_offset = (char *)pSMB + |
5678 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5679 | |
26f57364 | 5680 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5681 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5682 | /* BB find max SMB PDU from sess */ |
5683 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5684 | pSMB->SetupCount = 1; |
5685 | pSMB->Reserved3 = 0; | |
5686 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5687 | byte_count = 3 /* pad */ + params + count; | |
5688 | pSMB->DataCount = cpu_to_le16(count); | |
5689 | pSMB->ParameterCount = cpu_to_le16(params); | |
5690 | pSMB->TotalDataCount = pSMB->DataCount; | |
5691 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5692 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5693 | pSMB->DataOffset = cpu_to_le16(offset); | |
5694 | pSMB->Fid = fid; | |
5695 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5696 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5697 | else | |
5698 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5699 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5700 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5701 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5702 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5703 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5704 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5705 | if (rc) |
f96637be JP |
5706 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5707 | rc); | |
1da177e4 | 5708 | |
50c2f753 | 5709 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5710 | since file handle passed in no longer valid */ |
5711 | ||
5712 | return rc; | |
5713 | } | |
5714 | ||
6d22f098 | 5715 | int |
6d5786a3 | 5716 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5717 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5718 | { | |
5719 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5720 | char *data_offset; | |
5721 | int rc = 0; | |
5722 | __u16 params, param_offset, offset, byte_count, count; | |
5723 | ||
f96637be | 5724 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5725 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5726 | ||
5727 | if (rc) | |
5728 | return rc; | |
5729 | ||
5730 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5731 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5732 | ||
5733 | params = 6; | |
5734 | pSMB->MaxSetupCount = 0; | |
5735 | pSMB->Reserved = 0; | |
5736 | pSMB->Flags = 0; | |
5737 | pSMB->Timeout = 0; | |
5738 | pSMB->Reserved2 = 0; | |
5739 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5740 | offset = param_offset + params; | |
5741 | ||
5742 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5743 | ||
5744 | count = 1; | |
5745 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5746 | /* BB find max SMB PDU from sess */ | |
5747 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5748 | pSMB->SetupCount = 1; | |
5749 | pSMB->Reserved3 = 0; | |
5750 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5751 | byte_count = 3 /* pad */ + params + count; | |
5752 | pSMB->DataCount = cpu_to_le16(count); | |
5753 | pSMB->ParameterCount = cpu_to_le16(params); | |
5754 | pSMB->TotalDataCount = pSMB->DataCount; | |
5755 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5756 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5757 | pSMB->DataOffset = cpu_to_le16(offset); | |
5758 | pSMB->Fid = fid; | |
5759 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5760 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5761 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5762 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5763 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5764 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5765 | cifs_small_buf_release(pSMB); |
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); |
da502f7d | 6005 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 6006 | if (rc) |
f96637be JP |
6007 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
6008 | rc); | |
3bbeeb3c JL |
6009 | |
6010 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
6011 | since file handle passed in no longer valid */ | |
6012 | ||
6013 | return rc; | |
6014 | } | |
6015 | ||
1da177e4 | 6016 | int |
6d5786a3 | 6017 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6018 | const char *file_name, |
01ea95e3 JL |
6019 | const struct cifs_unix_set_info_args *args, |
6020 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6021 | { |
6022 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6023 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6024 | int name_len; | |
6025 | int rc = 0; | |
6026 | int bytes_returned = 0; | |
6027 | FILE_UNIX_BASIC_INFO *data_offset; | |
6028 | __u16 params, param_offset, offset, count, byte_count; | |
6029 | ||
f96637be | 6030 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6031 | setPermsRetry: |
6032 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6033 | (void **) &pSMBr); | |
6034 | if (rc) | |
6035 | return rc; | |
6036 | ||
6037 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6038 | name_len = | |
ff691e96 | 6039 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6040 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6041 | name_len++; /* trailing null */ |
6042 | name_len *= 2; | |
3e87d803 | 6043 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6044 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6045 | name_len++; /* trailing null */ |
ff691e96 | 6046 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6047 | } |
6048 | ||
6049 | params = 6 + name_len; | |
26f57364 | 6050 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6051 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6052 | /* BB find max SMB PDU from sess structure BB */ |
6053 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6054 | pSMB->MaxSetupCount = 0; |
6055 | pSMB->Reserved = 0; | |
6056 | pSMB->Flags = 0; | |
6057 | pSMB->Timeout = 0; | |
6058 | pSMB->Reserved2 = 0; | |
6059 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6060 | InformationLevel) - 4; |
1da177e4 LT |
6061 | offset = param_offset + params; |
6062 | data_offset = | |
6063 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6064 | offset); | |
6065 | memset(data_offset, 0, count); | |
6066 | pSMB->DataOffset = cpu_to_le16(offset); | |
6067 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6068 | pSMB->SetupCount = 1; | |
6069 | pSMB->Reserved3 = 0; | |
6070 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6071 | byte_count = 3 /* pad */ + params + count; | |
6072 | pSMB->ParameterCount = cpu_to_le16(params); | |
6073 | pSMB->DataCount = cpu_to_le16(count); | |
6074 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6075 | pSMB->TotalDataCount = pSMB->DataCount; | |
6076 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6077 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6078 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6079 | |
654cf14a | 6080 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6081 | |
6082 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6083 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6084 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6085 | if (rc) |
f96637be | 6086 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6087 | |
0d817bc0 | 6088 | cifs_buf_release(pSMB); |
1da177e4 LT |
6089 | if (rc == -EAGAIN) |
6090 | goto setPermsRetry; | |
6091 | return rc; | |
6092 | } | |
6093 | ||
1da177e4 | 6094 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6095 | /* |
6096 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6097 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6098 | * it looks for that attribute name and stuffs that value into the EAData | |
6099 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6100 | * buffer. In both cases, the return value is either the length of the | |
6101 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6102 | * the data isn't copied to it, but the length is returned. | |
6103 | */ | |
1da177e4 | 6104 | ssize_t |
6d5786a3 | 6105 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6106 | const unsigned char *searchName, const unsigned char *ea_name, |
6107 | char *EAData, size_t buf_size, | |
67b4c889 | 6108 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6109 | { |
6110 | /* BB assumes one setup word */ | |
6111 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6112 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
6113 | int remap = cifs_remap(cifs_sb); |
6114 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
6115 | int rc = 0; |
6116 | int bytes_returned; | |
6e462b9f | 6117 | int list_len; |
f0d3868b | 6118 | struct fealist *ea_response_data; |
50c2f753 SF |
6119 | struct fea *temp_fea; |
6120 | char *temp_ptr; | |
0cd126b5 | 6121 | char *end_of_smb; |
f0d3868b | 6122 | __u16 params, byte_count, data_offset; |
5980fc96 | 6123 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6124 | |
f96637be | 6125 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6126 | QAllEAsRetry: |
6127 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6128 | (void **) &pSMBr); | |
6129 | if (rc) | |
6130 | return rc; | |
6131 | ||
6132 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6133 | list_len = |
acbbb76a SF |
6134 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6135 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6136 | list_len++; /* trailing null */ |
6137 | list_len *= 2; | |
1da177e4 | 6138 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6139 | list_len = strnlen(searchName, PATH_MAX); |
6140 | list_len++; /* trailing null */ | |
6141 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6142 | } |
6143 | ||
6e462b9f | 6144 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6145 | pSMB->TotalDataCount = 0; |
6146 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6147 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6148 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6149 | pSMB->MaxSetupCount = 0; |
6150 | pSMB->Reserved = 0; | |
6151 | pSMB->Flags = 0; | |
6152 | pSMB->Timeout = 0; | |
6153 | pSMB->Reserved2 = 0; | |
6154 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6155 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6156 | pSMB->DataCount = 0; |
6157 | pSMB->DataOffset = 0; | |
6158 | pSMB->SetupCount = 1; | |
6159 | pSMB->Reserved3 = 0; | |
6160 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6161 | byte_count = params + 1 /* pad */ ; | |
6162 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6163 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6164 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6165 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6166 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6167 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6168 | ||
6169 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6170 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6171 | if (rc) { | |
f96637be | 6172 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6173 | goto QAllEAsOut; |
6174 | } | |
1da177e4 | 6175 | |
f0d3868b JL |
6176 | |
6177 | /* BB also check enough total bytes returned */ | |
6178 | /* BB we need to improve the validity checking | |
6179 | of these trans2 responses */ | |
6180 | ||
6181 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6182 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6183 | rc = -EIO; /* bad smb */ |
6184 | goto QAllEAsOut; | |
6185 | } | |
6186 | ||
6187 | /* check that length of list is not more than bcc */ | |
6188 | /* check that each entry does not go beyond length | |
6189 | of list */ | |
6190 | /* check that each element of each entry does not | |
6191 | go beyond end of list */ | |
6192 | /* validate_trans2_offsets() */ | |
6193 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6194 | ||
6195 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6196 | ea_response_data = (struct fealist *) | |
6197 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6198 | ||
6e462b9f | 6199 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6200 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6201 | if (list_len <= 8) { |
f96637be | 6202 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6203 | /* didn't find the named attribute */ |
6204 | if (ea_name) | |
6205 | rc = -ENODATA; | |
f0d3868b JL |
6206 | goto QAllEAsOut; |
6207 | } | |
6208 | ||
0cd126b5 | 6209 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6210 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6211 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6212 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6213 | rc = -EIO; |
6214 | goto QAllEAsOut; | |
6215 | } | |
6216 | ||
f0d3868b | 6217 | /* account for ea list len */ |
6e462b9f | 6218 | list_len -= 4; |
f0d3868b JL |
6219 | temp_fea = ea_response_data->list; |
6220 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6221 | while (list_len > 0) { |
122ca007 | 6222 | unsigned int name_len; |
f0d3868b | 6223 | __u16 value_len; |
0cd126b5 | 6224 | |
6e462b9f | 6225 | list_len -= 4; |
f0d3868b | 6226 | temp_ptr += 4; |
0cd126b5 JL |
6227 | /* make sure we can read name_len and value_len */ |
6228 | if (list_len < 0) { | |
f96637be | 6229 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6230 | rc = -EIO; |
6231 | goto QAllEAsOut; | |
6232 | } | |
6233 | ||
6234 | name_len = temp_fea->name_len; | |
6235 | value_len = le16_to_cpu(temp_fea->value_len); | |
6236 | list_len -= name_len + 1 + value_len; | |
6237 | if (list_len < 0) { | |
f96637be | 6238 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6239 | rc = -EIO; |
6240 | goto QAllEAsOut; | |
6241 | } | |
6242 | ||
31c0519f | 6243 | if (ea_name) { |
91d065c4 | 6244 | if (ea_name_len == name_len && |
ac423446 | 6245 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6246 | temp_ptr += name_len + 1; |
6247 | rc = value_len; | |
6248 | if (buf_size == 0) | |
6249 | goto QAllEAsOut; | |
6250 | if ((size_t)value_len > buf_size) { | |
6251 | rc = -ERANGE; | |
6252 | goto QAllEAsOut; | |
6253 | } | |
6254 | memcpy(EAData, temp_ptr, value_len); | |
6255 | goto QAllEAsOut; | |
6256 | } | |
f0d3868b | 6257 | } else { |
31c0519f JL |
6258 | /* account for prefix user. and trailing null */ |
6259 | rc += (5 + 1 + name_len); | |
6260 | if (rc < (int) buf_size) { | |
6261 | memcpy(EAData, "user.", 5); | |
6262 | EAData += 5; | |
6263 | memcpy(EAData, temp_ptr, name_len); | |
6264 | EAData += name_len; | |
6265 | /* null terminate name */ | |
6266 | *EAData = 0; | |
6267 | ++EAData; | |
6268 | } else if (buf_size == 0) { | |
6269 | /* skip copy - calc size only */ | |
6270 | } else { | |
6271 | /* stop before overrun buffer */ | |
6272 | rc = -ERANGE; | |
6273 | break; | |
6274 | } | |
1da177e4 | 6275 | } |
0cd126b5 | 6276 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6277 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6278 | } |
f0d3868b | 6279 | |
31c0519f JL |
6280 | /* didn't find the named attribute */ |
6281 | if (ea_name) | |
6282 | rc = -ENODATA; | |
6283 | ||
f0d3868b | 6284 | QAllEAsOut: |
0d817bc0 | 6285 | cifs_buf_release(pSMB); |
1da177e4 LT |
6286 | if (rc == -EAGAIN) |
6287 | goto QAllEAsRetry; | |
6288 | ||
6289 | return (ssize_t)rc; | |
6290 | } | |
6291 | ||
1da177e4 | 6292 | int |
6d5786a3 PS |
6293 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6294 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 6295 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 6296 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6297 | { |
6298 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6299 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6300 | struct fealist *parm_data; | |
6301 | int name_len; | |
6302 | int rc = 0; | |
6303 | int bytes_returned = 0; | |
6304 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 6305 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 6306 | |
f96637be | 6307 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6308 | SetEARetry: |
6309 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6310 | (void **) &pSMBr); | |
6311 | if (rc) | |
6312 | return rc; | |
6313 | ||
6314 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6315 | name_len = | |
acbbb76a SF |
6316 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6317 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6318 | name_len++; /* trailing null */ |
6319 | name_len *= 2; | |
50c2f753 | 6320 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6321 | name_len = strnlen(fileName, PATH_MAX); |
6322 | name_len++; /* trailing null */ | |
6323 | strncpy(pSMB->FileName, fileName, name_len); | |
6324 | } | |
6325 | ||
6326 | params = 6 + name_len; | |
6327 | ||
6328 | /* done calculating parms using name_len of file name, | |
6329 | now use name_len to calculate length of ea name | |
6330 | we are going to create in the inode xattrs */ | |
790fe579 | 6331 | if (ea_name == NULL) |
1da177e4 LT |
6332 | name_len = 0; |
6333 | else | |
50c2f753 | 6334 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6335 | |
dae5dbdb | 6336 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6337 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6338 | /* BB find max SMB PDU from sess */ |
6339 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6340 | pSMB->MaxSetupCount = 0; |
6341 | pSMB->Reserved = 0; | |
6342 | pSMB->Flags = 0; | |
6343 | pSMB->Timeout = 0; | |
6344 | pSMB->Reserved2 = 0; | |
6345 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6346 | InformationLevel) - 4; |
1da177e4 LT |
6347 | offset = param_offset + params; |
6348 | pSMB->InformationLevel = | |
6349 | cpu_to_le16(SMB_SET_FILE_EA); | |
6350 | ||
ade7db99 | 6351 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
6352 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
6353 | pSMB->DataOffset = cpu_to_le16(offset); | |
6354 | pSMB->SetupCount = 1; | |
6355 | pSMB->Reserved3 = 0; | |
6356 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6357 | byte_count = 3 /* pad */ + params + count; | |
6358 | pSMB->DataCount = cpu_to_le16(count); | |
6359 | parm_data->list_len = cpu_to_le32(count); | |
6360 | parm_data->list[0].EA_flags = 0; | |
6361 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6362 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6363 | /* EA names are always ASCII */ |
790fe579 | 6364 | if (ea_name) |
50c2f753 | 6365 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6366 | parm_data->list[0].name[name_len] = 0; |
6367 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6368 | /* caller ensures that ea_value_len is less than 64K but | |
6369 | we need to ensure that it fits within the smb */ | |
6370 | ||
50c2f753 SF |
6371 | /*BB add length check to see if it would fit in |
6372 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6373 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6374 | if (ea_value_len) | |
50c2f753 SF |
6375 | memcpy(parm_data->list[0].name+name_len+1, |
6376 | ea_value, ea_value_len); | |
1da177e4 LT |
6377 | |
6378 | pSMB->TotalDataCount = pSMB->DataCount; | |
6379 | pSMB->ParameterCount = cpu_to_le16(params); | |
6380 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6381 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6382 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6383 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6384 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6385 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6386 | if (rc) |
f96637be | 6387 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6388 | |
6389 | cifs_buf_release(pSMB); | |
6390 | ||
6391 | if (rc == -EAGAIN) | |
6392 | goto SetEARetry; | |
6393 | ||
6394 | return rc; | |
6395 | } | |
1da177e4 | 6396 | #endif |
0eff0e26 SF |
6397 | |
6398 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6399 | /* | |
6400 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6401 | * to allow network clients (such as Windows) to display updated | |
6402 | * lists of files in directory listings automatically when | |
6403 | * files are added by one user when another user has the | |
6404 | * same directory open on their desktop. The Linux cifs kernel | |
6405 | * client hooked into the kernel side of this interface for | |
6406 | * the same reason, but ironically when the VFS moved from | |
6407 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6408 | * network file system clients (the most obvious use case | |
6409 | * for notify interfaces is when multiple users can update | |
6410 | * the contents of the same directory - exactly what network | |
6411 | * file systems can do) although the server (Samba) could | |
6412 | * still use it. For the short term we leave the worker | |
6413 | * function ifdeffed out (below) until inotify is fixed | |
6414 | * in the VFS to make it easier to plug in network file | |
6415 | * system clients. If inotify turns out to be permanently | |
6416 | * incompatible for network fs clients, we could instead simply | |
6417 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6418 | */ | |
6d5786a3 | 6419 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6420 | const int notify_subdirs, const __u16 netfid, |
6421 | __u32 filter, struct file *pfile, int multishot, | |
6422 | const struct nls_table *nls_codepage) | |
6423 | { | |
6424 | int rc = 0; | |
6425 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6426 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6427 | struct dir_notify_req *dnotify_req; | |
6428 | int bytes_returned; | |
6429 | ||
f96637be | 6430 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6431 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6432 | (void **) &pSMBr); | |
6433 | if (rc) | |
6434 | return rc; | |
6435 | ||
6436 | pSMB->TotalParameterCount = 0 ; | |
6437 | pSMB->TotalDataCount = 0; | |
6438 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6439 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6440 | pSMB->MaxSetupCount = 4; |
6441 | pSMB->Reserved = 0; | |
6442 | pSMB->ParameterOffset = 0; | |
6443 | pSMB->DataCount = 0; | |
6444 | pSMB->DataOffset = 0; | |
6445 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6446 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6447 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6448 | if (notify_subdirs) | |
6449 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6450 | pSMB->Reserved2 = 0; | |
6451 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6452 | pSMB->Fid = netfid; /* file handle always le */ | |
6453 | pSMB->ByteCount = 0; | |
6454 | ||
6455 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6456 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6457 | CIFS_ASYNC_OP); | |
6458 | if (rc) { | |
f96637be | 6459 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6460 | } else { |
6461 | /* Add file to outstanding requests */ | |
6462 | /* BB change to kmem cache alloc */ | |
6463 | dnotify_req = kmalloc( | |
6464 | sizeof(struct dir_notify_req), | |
6465 | GFP_KERNEL); | |
6466 | if (dnotify_req) { | |
6467 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6468 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6469 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6470 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6471 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6472 | dnotify_req->netfid = netfid; | |
6473 | dnotify_req->pfile = pfile; | |
6474 | dnotify_req->filter = filter; | |
6475 | dnotify_req->multishot = multishot; | |
6476 | spin_lock(&GlobalMid_Lock); | |
6477 | list_add_tail(&dnotify_req->lhead, | |
6478 | &GlobalDnotifyReqList); | |
6479 | spin_unlock(&GlobalMid_Lock); | |
6480 | } else | |
6481 | rc = -ENOMEM; | |
6482 | } | |
6483 | cifs_buf_release(pSMB); | |
6484 | return rc; | |
6485 | } | |
6486 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |