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); |
3d4ef9a1 SF |
109 | |
110 | mutex_lock(&tcon->prfid_mutex); | |
111 | tcon->valid_root_fid = false; | |
112 | memset(tcon->prfid, 0, sizeof(struct cifs_fid)); | |
113 | mutex_unlock(&tcon->prfid_mutex); | |
114 | ||
aa24d1e9 PS |
115 | /* |
116 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
117 | * to this tcon. | |
118 | */ | |
1da177e4 LT |
119 | } |
120 | ||
9162ab20 JL |
121 | /* reconnect the socket, tcon, and smb session if needed */ |
122 | static int | |
96daf2b0 | 123 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 124 | { |
c4a5534a | 125 | int rc; |
96daf2b0 | 126 | struct cifs_ses *ses; |
9162ab20 JL |
127 | struct TCP_Server_Info *server; |
128 | struct nls_table *nls_codepage; | |
129 | ||
130 | /* | |
131 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
132 | * tcp and smb session status done differently for those three - in the | |
133 | * calling routine | |
134 | */ | |
135 | if (!tcon) | |
136 | return 0; | |
137 | ||
138 | ses = tcon->ses; | |
139 | server = ses->server; | |
140 | ||
141 | /* | |
142 | * only tree disconnect, open, and write, (and ulogoff which does not | |
143 | * have tcon) are allowed as we start force umount | |
144 | */ | |
145 | if (tcon->tidStatus == CifsExiting) { | |
146 | if (smb_command != SMB_COM_WRITE_ANDX && | |
147 | smb_command != SMB_COM_OPEN_ANDX && | |
148 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
149 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
150 | smb_command); | |
9162ab20 JL |
151 | return -ENODEV; |
152 | } | |
153 | } | |
154 | ||
9162ab20 JL |
155 | /* |
156 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
157 | * greater than cifs socket timeout which is 7 seconds | |
158 | */ | |
159 | while (server->tcpStatus == CifsNeedReconnect) { | |
160 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 161 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 162 | |
fd88ce93 | 163 | /* are we still trying to reconnect? */ |
9162ab20 JL |
164 | if (server->tcpStatus != CifsNeedReconnect) |
165 | break; | |
166 | ||
167 | /* | |
168 | * on "soft" mounts we wait once. Hard mounts keep | |
169 | * retrying until process is killed or server comes | |
170 | * back on-line | |
171 | */ | |
d402539b | 172 | if (!tcon->retry) { |
f96637be | 173 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
174 | return -EHOSTDOWN; |
175 | } | |
176 | } | |
177 | ||
178 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
179 | return 0; | |
180 | ||
181 | nls_codepage = load_nls_default(); | |
182 | ||
183 | /* | |
184 | * need to prevent multiple threads trying to simultaneously | |
185 | * reconnect the same SMB session | |
186 | */ | |
d7b619cf | 187 | mutex_lock(&ses->session_mutex); |
76e75270 SC |
188 | |
189 | /* | |
190 | * Recheck after acquire mutex. If another thread is negotiating | |
191 | * and the server never sends an answer the socket will be closed | |
192 | * and tcpStatus set to reconnect. | |
193 | */ | |
194 | if (server->tcpStatus == CifsNeedReconnect) { | |
195 | rc = -EHOSTDOWN; | |
196 | mutex_unlock(&ses->session_mutex); | |
197 | goto out; | |
198 | } | |
199 | ||
198b5682 JL |
200 | rc = cifs_negotiate_protocol(0, ses); |
201 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
202 | rc = cifs_setup_session(0, ses, nls_codepage); |
203 | ||
204 | /* do we need to reconnect tcon? */ | |
205 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 206 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
207 | goto out; |
208 | } | |
209 | ||
aa24d1e9 | 210 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 211 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 212 | mutex_unlock(&ses->session_mutex); |
f96637be | 213 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 214 | |
c318e6c2 SF |
215 | if (rc) { |
216 | printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc); | |
9162ab20 | 217 | goto out; |
c318e6c2 | 218 | } |
9162ab20 | 219 | |
9162ab20 JL |
220 | atomic_inc(&tconInfoReconnectCount); |
221 | ||
222 | /* tell server Unix caps we support */ | |
223 | if (ses->capabilities & CAP_UNIX) | |
224 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
225 | ||
226 | /* | |
227 | * Removed call to reopen open files here. It is safer (and faster) to | |
228 | * reopen files one at a time as needed in read and write. | |
229 | * | |
230 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
231 | */ | |
232 | ||
233 | out: | |
234 | /* | |
235 | * Check if handle based operation so we know whether we can continue | |
236 | * or not without returning to caller to reset file handle | |
237 | */ | |
238 | switch (smb_command) { | |
239 | case SMB_COM_READ_ANDX: | |
240 | case SMB_COM_WRITE_ANDX: | |
241 | case SMB_COM_CLOSE: | |
242 | case SMB_COM_FIND_CLOSE2: | |
243 | case SMB_COM_LOCKING_ANDX: | |
244 | rc = -EAGAIN; | |
245 | } | |
246 | ||
247 | unload_nls(nls_codepage); | |
248 | return rc; | |
249 | } | |
250 | ||
ad7a2926 SF |
251 | /* Allocate and return pointer to an SMB request buffer, and set basic |
252 | SMB information in the SMB header. If the return code is zero, this | |
253 | function must have filled in request_buf pointer */ | |
1da177e4 | 254 | static int |
96daf2b0 | 255 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 256 | void **request_buf) |
1da177e4 | 257 | { |
f569599a | 258 | int rc; |
1da177e4 | 259 | |
9162ab20 | 260 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 261 | if (rc) |
1da177e4 LT |
262 | return rc; |
263 | ||
264 | *request_buf = cifs_small_buf_get(); | |
265 | if (*request_buf == NULL) { | |
266 | /* BB should we add a retry in here if not a writepage? */ | |
267 | return -ENOMEM; | |
268 | } | |
269 | ||
63135e08 | 270 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 271 | tcon, wct); |
1da177e4 | 272 | |
790fe579 SF |
273 | if (tcon != NULL) |
274 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 275 | |
f569599a | 276 | return 0; |
5815449d SF |
277 | } |
278 | ||
12b3b8ff | 279 | int |
50c2f753 | 280 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 281 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
282 | { |
283 | int rc; | |
50c2f753 | 284 | struct smb_hdr *buffer; |
12b3b8ff | 285 | |
5815449d | 286 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 287 | if (rc) |
12b3b8ff SF |
288 | return rc; |
289 | ||
04fdabe1 | 290 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 291 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
292 | if (ses->capabilities & CAP_UNICODE) |
293 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 294 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
295 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
296 | ||
297 | /* uid, tid can stay at zero as set in header assemble */ | |
298 | ||
50c2f753 | 299 | /* BB add support for turning on the signing when |
12b3b8ff SF |
300 | this function is used after 1st of session setup requests */ |
301 | ||
302 | return rc; | |
303 | } | |
1da177e4 LT |
304 | |
305 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
306 | static int | |
96daf2b0 | 307 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 308 | void **request_buf, void **response_buf) |
1da177e4 | 309 | { |
1da177e4 LT |
310 | *request_buf = cifs_buf_get(); |
311 | if (*request_buf == NULL) { | |
312 | /* BB should we add a retry in here if not a writepage? */ | |
313 | return -ENOMEM; | |
314 | } | |
315 | /* Although the original thought was we needed the response buf for */ | |
316 | /* potential retries of smb operations it turns out we can determine */ | |
317 | /* from the mid flags when the request buffer can be resent without */ | |
318 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 319 | if (response_buf) |
50c2f753 | 320 | *response_buf = *request_buf; |
1da177e4 LT |
321 | |
322 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 323 | wct); |
1da177e4 | 324 | |
790fe579 SF |
325 | if (tcon != NULL) |
326 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 327 | |
f569599a JL |
328 | return 0; |
329 | } | |
330 | ||
331 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
332 | static int | |
96daf2b0 | 333 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
334 | void **request_buf, void **response_buf) |
335 | { | |
336 | int rc; | |
337 | ||
338 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
339 | if (rc) | |
340 | return rc; | |
341 | ||
342 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
343 | } | |
344 | ||
345 | static int | |
96daf2b0 | 346 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
347 | void **request_buf, void **response_buf) |
348 | { | |
349 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
350 | return -EHOSTDOWN; | |
351 | ||
352 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
353 | } |
354 | ||
50c2f753 | 355 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 356 | { |
12df83c9 JL |
357 | unsigned int total_size; |
358 | ||
359 | /* check for plausible wct */ | |
360 | if (pSMB->hdr.WordCount < 10) | |
361 | goto vt2_err; | |
1da177e4 | 362 | |
1da177e4 | 363 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
364 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
365 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
366 | goto vt2_err; | |
367 | ||
12df83c9 JL |
368 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
369 | if (total_size >= 512) | |
370 | goto vt2_err; | |
371 | ||
fd5707e1 JL |
372 | /* check that bcc is at least as big as parms + data, and that it is |
373 | * less than negotiated smb buffer | |
374 | */ | |
12df83c9 JL |
375 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
376 | if (total_size > get_bcc(&pSMB->hdr) || | |
377 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
378 | goto vt2_err; | |
379 | ||
380 | return 0; | |
381 | vt2_err: | |
50c2f753 | 382 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 383 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 384 | return -EINVAL; |
1da177e4 | 385 | } |
690c522f | 386 | |
31d9e2bd | 387 | static int |
3f618223 | 388 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
389 | { |
390 | int rc = 0; | |
391 | u16 count; | |
392 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 393 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
394 | |
395 | count = get_bcc(&pSMBr->hdr); | |
396 | if (count < SMB1_CLIENT_GUID_SIZE) | |
397 | return -EIO; | |
398 | ||
399 | spin_lock(&cifs_tcp_ses_lock); | |
400 | if (server->srv_count > 1) { | |
401 | spin_unlock(&cifs_tcp_ses_lock); | |
402 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
403 | cifs_dbg(FYI, "server UID changed\n"); | |
404 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
405 | } | |
406 | } else { | |
407 | spin_unlock(&cifs_tcp_ses_lock); | |
408 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
409 | } | |
410 | ||
411 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 412 | server->sec_ntlmssp = true; |
31d9e2bd JL |
413 | } else { |
414 | count -= SMB1_CLIENT_GUID_SIZE; | |
415 | rc = decode_negTokenInit( | |
416 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
417 | if (rc != 1) | |
418 | return -EINVAL; | |
31d9e2bd JL |
419 | } |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
9ddec561 | 424 | int |
38d77c50 | 425 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 426 | { |
50285882 JL |
427 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
428 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
429 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
430 | ||
431 | /* | |
432 | * Is signing required by mnt options? If not then check | |
433 | * global_secflags to see if it is there. | |
434 | */ | |
435 | if (!mnt_sign_required) | |
436 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
437 | CIFSSEC_MUST_SIGN); | |
438 | ||
439 | /* | |
440 | * If signing is required then it's automatically enabled too, | |
441 | * otherwise, check to see if the secflags allow it. | |
442 | */ | |
443 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
444 | (global_secflags & CIFSSEC_MAY_SIGN); | |
445 | ||
446 | /* If server requires signing, does client allow it? */ | |
447 | if (srv_sign_required) { | |
448 | if (!mnt_sign_enabled) { | |
449 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
450 | return -ENOTSUPP; | |
9ddec561 | 451 | } |
38d77c50 JL |
452 | server->sign = true; |
453 | } | |
454 | ||
455 | /* If client requires signing, does server allow it? */ | |
456 | if (mnt_sign_required) { | |
457 | if (!srv_sign_enabled) { | |
458 | cifs_dbg(VFS, "Server does not support signing!"); | |
459 | return -ENOTSUPP; | |
460 | } | |
461 | server->sign = true; | |
9ddec561 JL |
462 | } |
463 | ||
bb4c0419 LL |
464 | if (cifs_rdma_enabled(server) && server->sign) |
465 | cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled"); | |
466 | ||
9ddec561 JL |
467 | return 0; |
468 | } | |
469 | ||
2190eca1 JL |
470 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
471 | static int | |
3f618223 | 472 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
473 | { |
474 | __s16 tmp; | |
475 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
476 | ||
477 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
478 | return -EOPNOTSUPP; | |
479 | ||
2190eca1 JL |
480 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
481 | server->maxReq = min_t(unsigned int, | |
482 | le16_to_cpu(rsp->MaxMpxCount), | |
483 | cifs_max_pending); | |
484 | set_credits(server, server->maxReq); | |
485 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
2190eca1 JL |
486 | /* even though we do not use raw we might as well set this |
487 | accurately, in case we ever find a need for it */ | |
488 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
489 | server->max_rw = 0xFF00; | |
490 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
491 | } else { | |
492 | server->max_rw = 0;/* do not need to use raw anyway */ | |
493 | server->capabilities = CAP_MPX_MODE; | |
494 | } | |
495 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
496 | if (tmp == -1) { | |
497 | /* OS/2 often does not set timezone therefore | |
498 | * we must use server time to calc time zone. | |
499 | * Could deviate slightly from the right zone. | |
500 | * Smallest defined timezone difference is 15 minutes | |
501 | * (i.e. Nepal). Rounding up/down is done to match | |
502 | * this requirement. | |
503 | */ | |
504 | int val, seconds, remain, result; | |
e37fea58 DD |
505 | struct timespec ts; |
506 | unsigned long utc = ktime_get_real_seconds(); | |
2190eca1 JL |
507 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
508 | rsp->SrvTime.Time, 0); | |
509 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
e37fea58 DD |
510 | (int)ts.tv_sec, (int)utc, |
511 | (int)(utc - ts.tv_sec)); | |
512 | val = (int)(utc - ts.tv_sec); | |
2190eca1 JL |
513 | seconds = abs(val); |
514 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
515 | remain = seconds % MIN_TZ_ADJ; | |
516 | if (remain >= (MIN_TZ_ADJ / 2)) | |
517 | result += MIN_TZ_ADJ; | |
518 | if (val < 0) | |
519 | result = -result; | |
520 | server->timeAdj = result; | |
521 | } else { | |
522 | server->timeAdj = (int)tmp; | |
523 | server->timeAdj *= 60; /* also in seconds */ | |
524 | } | |
525 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
526 | ||
527 | ||
528 | /* BB get server time for time conversions and add | |
529 | code to use it and timezone since this is not UTC */ | |
530 | ||
531 | if (rsp->EncryptionKeyLength == | |
532 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
533 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
534 | CIFS_CRYPTO_KEY_SIZE); | |
535 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
536 | return -EIO; /* need cryptkey unless plain text */ | |
537 | } | |
538 | ||
539 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
540 | return 0; | |
541 | } | |
542 | #else | |
543 | static inline int | |
3f618223 | 544 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
545 | { |
546 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
547 | return -EOPNOTSUPP; | |
548 | } | |
549 | #endif | |
550 | ||
9193400b | 551 | static bool |
3f618223 | 552 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 553 | { |
3f618223 JL |
554 | switch (sectype) { |
555 | case RawNTLMSSP: | |
556 | case Kerberos: | |
9193400b | 557 | return true; |
3f618223 JL |
558 | case Unspecified: |
559 | if (global_secflags & | |
560 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
561 | return true; | |
562 | /* Fallthrough */ | |
563 | default: | |
564 | return false; | |
565 | } | |
9193400b JL |
566 | } |
567 | ||
1da177e4 | 568 | int |
286170aa | 569 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
570 | { |
571 | NEGOTIATE_REQ *pSMB; | |
572 | NEGOTIATE_RSP *pSMBr; | |
573 | int rc = 0; | |
574 | int bytes_returned; | |
3979877e | 575 | int i; |
3534b850 | 576 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
577 | u16 count; |
578 | ||
3534b850 JL |
579 | if (!server) { |
580 | WARN(1, "%s: server is NULL!\n", __func__); | |
581 | return -EIO; | |
1da177e4 | 582 | } |
3534b850 | 583 | |
1da177e4 LT |
584 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
585 | (void **) &pSMB, (void **) &pSMBr); | |
586 | if (rc) | |
587 | return rc; | |
750d1151 | 588 | |
88257360 | 589 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 590 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 591 | |
3f618223 | 592 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 593 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
594 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
595 | } | |
50c2f753 | 596 | |
3979877e | 597 | count = 0; |
50c2f753 | 598 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
599 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
600 | count += strlen(protocols[i].name) + 1; | |
601 | /* null at end of source and target buffers anyway */ | |
602 | } | |
be8e3b00 | 603 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
604 | pSMB->ByteCount = cpu_to_le16(count); |
605 | ||
606 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
607 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 608 | if (rc != 0) |
254e55ed SF |
609 | goto neg_err_exit; |
610 | ||
9bf67e51 | 611 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 612 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 613 | /* Check wct = 1 error case */ |
9bf67e51 | 614 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 615 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 616 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
617 | could not negotiate a common dialect */ |
618 | rc = -EOPNOTSUPP; | |
619 | goto neg_err_exit; | |
790fe579 | 620 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 621 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 622 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 623 | goto signing_check; |
790fe579 | 624 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
625 | /* unknown wct */ |
626 | rc = -EOPNOTSUPP; | |
627 | goto neg_err_exit; | |
628 | } | |
2190eca1 JL |
629 | /* else wct == 17, NTLM or better */ |
630 | ||
96daf2b0 SF |
631 | server->sec_mode = pSMBr->SecurityMode; |
632 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 633 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 634 | |
254e55ed SF |
635 | /* one byte, so no need to convert this or EncryptionKeyLen from |
636 | little endian */ | |
10b9b98e PS |
637 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
638 | cifs_max_pending); | |
45275789 | 639 | set_credits(server, server->maxReq); |
254e55ed | 640 | /* probably no need to store and check maxvcs */ |
c974befa | 641 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 642 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 643 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 644 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
645 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
646 | server->timeAdj *= 60; | |
31d9e2bd | 647 | |
e598d1d8 JL |
648 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
649 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 650 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 651 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
652 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
653 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 654 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 655 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 656 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 657 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
658 | } else { |
659 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 660 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 661 | } |
254e55ed SF |
662 | |
663 | signing_check: | |
9ddec561 | 664 | if (!rc) |
38d77c50 | 665 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 666 | neg_err_exit: |
4a6d87f1 | 667 | cifs_buf_release(pSMB); |
254e55ed | 668 | |
f96637be | 669 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
670 | return rc; |
671 | } | |
672 | ||
673 | int | |
2e6e02ab | 674 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
675 | { |
676 | struct smb_hdr *smb_buffer; | |
1da177e4 | 677 | int rc = 0; |
1da177e4 | 678 | |
f96637be | 679 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 680 | |
f1987b44 JL |
681 | /* BB: do we need to check this? These should never be NULL. */ |
682 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
683 | return -EIO; | |
1da177e4 | 684 | |
f1987b44 JL |
685 | /* |
686 | * No need to return error on this operation if tid invalidated and | |
687 | * closed on server already e.g. due to tcp session crashing. Also, | |
688 | * the tcon is no longer on the list, so no need to take lock before | |
689 | * checking this. | |
690 | */ | |
268875b9 | 691 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 692 | return 0; |
1da177e4 | 693 | |
50c2f753 | 694 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 695 | (void **)&smb_buffer); |
f1987b44 | 696 | if (rc) |
1da177e4 | 697 | return rc; |
133672ef | 698 | |
792af7b0 | 699 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 700 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 701 | if (rc) |
f96637be | 702 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 703 | |
50c2f753 | 704 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 705 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
706 | if (rc == -EAGAIN) |
707 | rc = 0; | |
708 | ||
709 | return rc; | |
710 | } | |
711 | ||
766fdbb5 JL |
712 | /* |
713 | * This is a no-op for now. We're not really interested in the reply, but | |
714 | * rather in the fact that the server sent one and that server->lstrp | |
715 | * gets updated. | |
716 | * | |
717 | * FIXME: maybe we should consider checking that the reply matches request? | |
718 | */ | |
719 | static void | |
720 | cifs_echo_callback(struct mid_q_entry *mid) | |
721 | { | |
722 | struct TCP_Server_Info *server = mid->callback_data; | |
723 | ||
724 | DeleteMidQEntry(mid); | |
a891f0f8 | 725 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
726 | } |
727 | ||
728 | int | |
729 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
730 | { | |
731 | ECHO_REQ *smb; | |
732 | int rc = 0; | |
738f9de5 PS |
733 | struct kvec iov[2]; |
734 | struct smb_rqst rqst = { .rq_iov = iov, | |
735 | .rq_nvec = 2 }; | |
766fdbb5 | 736 | |
f96637be | 737 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
738 | |
739 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
740 | if (rc) | |
741 | return rc; | |
742 | ||
26c9cb66 SF |
743 | if (server->capabilities & CAP_UNICODE) |
744 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
745 | ||
766fdbb5 | 746 | /* set up echo request */ |
5443d130 | 747 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
748 | smb->hdr.WordCount = 1; |
749 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 750 | put_bcc(1, &smb->hdr); |
766fdbb5 | 751 | smb->Data[0] = 'a'; |
be8e3b00 | 752 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
753 | |
754 | iov[0].iov_len = 4; | |
755 | iov[0].iov_base = smb; | |
756 | iov[1].iov_len = get_rfc1002_length(smb); | |
757 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 758 | |
9b7c18a2 | 759 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
a891f0f8 | 760 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 761 | if (rc) |
f96637be | 762 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
763 | |
764 | cifs_small_buf_release(smb); | |
765 | ||
766 | return rc; | |
767 | } | |
768 | ||
1da177e4 | 769 | int |
58c45c58 | 770 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 771 | { |
1da177e4 LT |
772 | LOGOFF_ANDX_REQ *pSMB; |
773 | int rc = 0; | |
1da177e4 | 774 | |
f96637be | 775 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 776 | |
14fbf50d JL |
777 | /* |
778 | * BB: do we need to check validity of ses and server? They should | |
779 | * always be valid since we have an active reference. If not, that | |
780 | * should probably be a BUG() | |
781 | */ | |
782 | if (!ses || !ses->server) | |
3b795210 SF |
783 | return -EIO; |
784 | ||
d7b619cf | 785 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
786 | if (ses->need_reconnect) |
787 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
788 | already closed due to reconnect */ | |
1da177e4 LT |
789 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
790 | if (rc) { | |
d7b619cf | 791 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
792 | return rc; |
793 | } | |
794 | ||
88257360 | 795 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 796 | |
38d77c50 JL |
797 | if (ses->server->sign) |
798 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
799 | |
800 | pSMB->hdr.Uid = ses->Suid; | |
801 | ||
802 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 803 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 804 | cifs_small_buf_release(pSMB); |
3b795210 | 805 | session_already_dead: |
d7b619cf | 806 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
807 | |
808 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 809 | since server closed smb session, no sense reporting |
1da177e4 LT |
810 | error */ |
811 | if (rc == -EAGAIN) | |
812 | rc = 0; | |
813 | return rc; | |
814 | } | |
815 | ||
2d785a50 | 816 | int |
6d5786a3 PS |
817 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
818 | const char *fileName, __u16 type, | |
819 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
820 | { |
821 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
822 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
823 | struct unlink_psx_rq *pRqD; | |
824 | int name_len; | |
825 | int rc = 0; | |
826 | int bytes_returned = 0; | |
827 | __u16 params, param_offset, offset, byte_count; | |
828 | ||
f96637be | 829 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
830 | PsxDelete: |
831 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
832 | (void **) &pSMBr); | |
833 | if (rc) | |
834 | return rc; | |
835 | ||
836 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
837 | name_len = | |
acbbb76a SF |
838 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
839 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
840 | name_len++; /* trailing null */ |
841 | name_len *= 2; | |
842 | } else { /* BB add path length overrun check */ | |
843 | name_len = strnlen(fileName, PATH_MAX); | |
844 | name_len++; /* trailing null */ | |
845 | strncpy(pSMB->FileName, fileName, name_len); | |
846 | } | |
847 | ||
848 | params = 6 + name_len; | |
849 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
850 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
851 | pSMB->MaxSetupCount = 0; | |
852 | pSMB->Reserved = 0; | |
853 | pSMB->Flags = 0; | |
854 | pSMB->Timeout = 0; | |
855 | pSMB->Reserved2 = 0; | |
856 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
857 | InformationLevel) - 4; | |
858 | offset = param_offset + params; | |
859 | ||
860 | /* Setup pointer to Request Data (inode type) */ | |
861 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
862 | pRqD->type = cpu_to_le16(type); | |
863 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
864 | pSMB->DataOffset = cpu_to_le16(offset); | |
865 | pSMB->SetupCount = 1; | |
866 | pSMB->Reserved3 = 0; | |
867 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
868 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
869 | ||
870 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
871 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
872 | pSMB->ParameterCount = cpu_to_le16(params); | |
873 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
874 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
875 | pSMB->Reserved4 = 0; | |
be8e3b00 | 876 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
877 | pSMB->ByteCount = cpu_to_le16(byte_count); |
878 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
879 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 880 | if (rc) |
f96637be | 881 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
882 | cifs_buf_release(pSMB); |
883 | ||
44c58186 | 884 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
885 | |
886 | if (rc == -EAGAIN) | |
887 | goto PsxDelete; | |
888 | ||
889 | return rc; | |
890 | } | |
891 | ||
1da177e4 | 892 | int |
ed6875e0 PS |
893 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
894 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
895 | { |
896 | DELETE_FILE_REQ *pSMB = NULL; | |
897 | DELETE_FILE_RSP *pSMBr = NULL; | |
898 | int rc = 0; | |
899 | int bytes_returned; | |
900 | int name_len; | |
2baa2682 | 901 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
902 | |
903 | DelFileRetry: | |
904 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
905 | (void **) &pSMBr); | |
906 | if (rc) | |
907 | return rc; | |
908 | ||
909 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
910 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
911 | PATH_MAX, cifs_sb->local_nls, | |
912 | remap); | |
1da177e4 LT |
913 | name_len++; /* trailing null */ |
914 | name_len *= 2; | |
09d1db5c | 915 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 916 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 917 | name_len++; /* trailing null */ |
ed6875e0 | 918 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
919 | } |
920 | pSMB->SearchAttributes = | |
921 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
922 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 923 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
924 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
925 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
926 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 927 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 928 | if (rc) |
f96637be | 929 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
930 | |
931 | cifs_buf_release(pSMB); | |
932 | if (rc == -EAGAIN) | |
933 | goto DelFileRetry; | |
934 | ||
935 | return rc; | |
936 | } | |
937 | ||
938 | int | |
f958ca5d PS |
939 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
940 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
941 | { |
942 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
943 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
944 | int rc = 0; | |
945 | int bytes_returned; | |
946 | int name_len; | |
2baa2682 | 947 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 948 | |
f96637be | 949 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
950 | RmDirRetry: |
951 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
952 | (void **) &pSMBr); | |
953 | if (rc) | |
954 | return rc; | |
955 | ||
956 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
957 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
958 | PATH_MAX, cifs_sb->local_nls, | |
959 | remap); | |
1da177e4 LT |
960 | name_len++; /* trailing null */ |
961 | name_len *= 2; | |
09d1db5c | 962 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 963 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 964 | name_len++; /* trailing null */ |
f958ca5d | 965 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
966 | } |
967 | ||
968 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 969 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
970 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
971 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
972 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 973 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 974 | if (rc) |
f96637be | 975 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
976 | |
977 | cifs_buf_release(pSMB); | |
978 | if (rc == -EAGAIN) | |
979 | goto RmDirRetry; | |
980 | return rc; | |
981 | } | |
982 | ||
983 | int | |
f436720e PS |
984 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
985 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
986 | { |
987 | int rc = 0; | |
988 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
989 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
990 | int bytes_returned; | |
991 | int name_len; | |
2baa2682 | 992 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 993 | |
f96637be | 994 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
995 | MkDirRetry: |
996 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
997 | (void **) &pSMBr); | |
998 | if (rc) | |
999 | return rc; | |
1000 | ||
1001 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 1002 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
1003 | PATH_MAX, cifs_sb->local_nls, |
1004 | remap); | |
1da177e4 LT |
1005 | name_len++; /* trailing null */ |
1006 | name_len *= 2; | |
09d1db5c | 1007 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1008 | name_len = strnlen(name, PATH_MAX); |
1009 | name_len++; /* trailing null */ | |
1010 | strncpy(pSMB->DirName, name, name_len); | |
1011 | } | |
1012 | ||
1013 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1014 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1015 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1016 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1017 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1018 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1019 | if (rc) |
f96637be | 1020 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 1021 | |
1da177e4 LT |
1022 | cifs_buf_release(pSMB); |
1023 | if (rc == -EAGAIN) | |
1024 | goto MkDirRetry; | |
1025 | return rc; | |
1026 | } | |
1027 | ||
2dd29d31 | 1028 | int |
6d5786a3 PS |
1029 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1030 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1031 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1032 | const char *name, const struct nls_table *nls_codepage, | |
1033 | int remap) | |
2dd29d31 SF |
1034 | { |
1035 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1036 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1037 | int name_len; | |
1038 | int rc = 0; | |
1039 | int bytes_returned = 0; | |
2dd29d31 | 1040 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1041 | OPEN_PSX_REQ *pdata; |
1042 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1043 | |
f96637be | 1044 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1045 | PsxCreat: |
1046 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1047 | (void **) &pSMBr); | |
1048 | if (rc) | |
1049 | return rc; | |
1050 | ||
1051 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1052 | name_len = | |
acbbb76a SF |
1053 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1054 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1055 | name_len++; /* trailing null */ |
1056 | name_len *= 2; | |
1057 | } else { /* BB improve the check for buffer overruns BB */ | |
1058 | name_len = strnlen(name, PATH_MAX); | |
1059 | name_len++; /* trailing null */ | |
1060 | strncpy(pSMB->FileName, name, name_len); | |
1061 | } | |
1062 | ||
1063 | params = 6 + name_len; | |
1064 | count = sizeof(OPEN_PSX_REQ); | |
1065 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1066 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1067 | pSMB->MaxSetupCount = 0; | |
1068 | pSMB->Reserved = 0; | |
1069 | pSMB->Flags = 0; | |
1070 | pSMB->Timeout = 0; | |
1071 | pSMB->Reserved2 = 0; | |
1072 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1073 | InformationLevel) - 4; |
2dd29d31 | 1074 | offset = param_offset + params; |
2dd29d31 | 1075 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1076 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1077 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1078 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1079 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1080 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1081 | pSMB->DataOffset = cpu_to_le16(offset); | |
1082 | pSMB->SetupCount = 1; | |
1083 | pSMB->Reserved3 = 0; | |
1084 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1085 | byte_count = 3 /* pad */ + params + count; | |
1086 | ||
1087 | pSMB->DataCount = cpu_to_le16(count); | |
1088 | pSMB->ParameterCount = cpu_to_le16(params); | |
1089 | pSMB->TotalDataCount = pSMB->DataCount; | |
1090 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1091 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1092 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1093 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1094 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1095 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1096 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1097 | if (rc) { | |
f96637be | 1098 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1099 | goto psx_create_err; |
1100 | } | |
1101 | ||
f96637be | 1102 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1103 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1104 | ||
820a803f | 1105 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1106 | rc = -EIO; /* bad smb */ |
1107 | goto psx_create_err; | |
1108 | } | |
1109 | ||
1110 | /* copy return information to pRetData */ | |
50c2f753 | 1111 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1112 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1113 | |
2dd29d31 | 1114 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1115 | if (netfid) |
2dd29d31 SF |
1116 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1117 | /* Let caller know file was created so we can set the mode. */ | |
1118 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1119 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1120 | *pOplock |= CIFS_CREATE_ACTION; |
1121 | /* check to make sure response data is there */ | |
8f2376ad CG |
1122 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1123 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1124 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1125 | } else { |
820a803f | 1126 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1127 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1128 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1129 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1130 | goto psx_create_err; |
1131 | } | |
50c2f753 | 1132 | memcpy((char *) pRetData, |
cbac3cba | 1133 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1134 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1135 | } |
2dd29d31 SF |
1136 | |
1137 | psx_create_err: | |
1138 | cifs_buf_release(pSMB); | |
1139 | ||
65bc98b0 | 1140 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1141 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1142 | else |
44c58186 | 1143 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1144 | |
1145 | if (rc == -EAGAIN) | |
1146 | goto PsxCreat; | |
1147 | ||
50c2f753 | 1148 | return rc; |
2dd29d31 SF |
1149 | } |
1150 | ||
a9d02ad4 SF |
1151 | static __u16 convert_disposition(int disposition) |
1152 | { | |
1153 | __u16 ofun = 0; | |
1154 | ||
1155 | switch (disposition) { | |
1156 | case FILE_SUPERSEDE: | |
1157 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1158 | break; | |
1159 | case FILE_OPEN: | |
1160 | ofun = SMBOPEN_OAPPEND; | |
1161 | break; | |
1162 | case FILE_CREATE: | |
1163 | ofun = SMBOPEN_OCREATE; | |
1164 | break; | |
1165 | case FILE_OPEN_IF: | |
1166 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1167 | break; | |
1168 | case FILE_OVERWRITE: | |
1169 | ofun = SMBOPEN_OTRUNC; | |
1170 | break; | |
1171 | case FILE_OVERWRITE_IF: | |
1172 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1173 | break; | |
1174 | default: | |
f96637be | 1175 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1176 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1177 | } | |
1178 | return ofun; | |
1179 | } | |
1180 | ||
35fc37d5 JL |
1181 | static int |
1182 | access_flags_to_smbopen_mode(const int access_flags) | |
1183 | { | |
1184 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1185 | ||
1186 | if (masked_flags == GENERIC_READ) | |
1187 | return SMBOPEN_READ; | |
1188 | else if (masked_flags == GENERIC_WRITE) | |
1189 | return SMBOPEN_WRITE; | |
1190 | ||
1191 | /* just go for read/write */ | |
1192 | return SMBOPEN_READWRITE; | |
1193 | } | |
1194 | ||
a9d02ad4 | 1195 | int |
6d5786a3 | 1196 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1197 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1198 | const int access_flags, const int create_options, __u16 *netfid, |
1199 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1200 | const struct nls_table *nls_codepage, int remap) |
1201 | { | |
1202 | int rc = -EACCES; | |
1203 | OPENX_REQ *pSMB = NULL; | |
1204 | OPENX_RSP *pSMBr = NULL; | |
1205 | int bytes_returned; | |
1206 | int name_len; | |
1207 | __u16 count; | |
1208 | ||
1209 | OldOpenRetry: | |
1210 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1211 | (void **) &pSMBr); | |
1212 | if (rc) | |
1213 | return rc; | |
1214 | ||
1215 | pSMB->AndXCommand = 0xFF; /* none */ | |
1216 | ||
1217 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1218 | count = 1; /* account for one byte pad to word boundary */ | |
1219 | name_len = | |
acbbb76a SF |
1220 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1221 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1222 | name_len++; /* trailing null */ |
1223 | name_len *= 2; | |
1224 | } else { /* BB improve check for buffer overruns BB */ | |
1225 | count = 0; /* no pad */ | |
1226 | name_len = strnlen(fileName, PATH_MAX); | |
1227 | name_len++; /* trailing null */ | |
1228 | strncpy(pSMB->fileName, fileName, name_len); | |
1229 | } | |
1230 | if (*pOplock & REQ_OPLOCK) | |
1231 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1232 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1233 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1234 | |
a9d02ad4 | 1235 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1236 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1237 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1238 | /* set file as system file if special file such | |
1239 | as fifo and server expecting SFU style and | |
1240 | no Unix extensions */ | |
1241 | ||
790fe579 SF |
1242 | if (create_options & CREATE_OPTION_SPECIAL) |
1243 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1244 | else /* BB FIXME BB */ |
1245 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1246 | |
67750fb9 JL |
1247 | if (create_options & CREATE_OPTION_READONLY) |
1248 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1249 | |
1250 | /* BB FIXME BB */ | |
50c2f753 SF |
1251 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1252 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1253 | /* BB FIXME END BB */ |
3e87d803 SF |
1254 | |
1255 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1256 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1257 | count += name_len; |
be8e3b00 | 1258 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1259 | |
1260 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1261 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1262 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1263 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1264 | if (rc) { |
f96637be | 1265 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1266 | } else { |
1267 | /* BB verify if wct == 15 */ | |
1268 | ||
582d21e5 | 1269 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1270 | |
1271 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1272 | /* Let caller know file was created so we can set the mode. */ | |
1273 | /* Do we care about the CreateAction in any other cases? */ | |
1274 | /* BB FIXME BB */ | |
790fe579 | 1275 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1276 | *pOplock |= CIFS_CREATE_ACTION; */ |
1277 | /* BB FIXME END */ | |
1278 | ||
790fe579 | 1279 | if (pfile_info) { |
a9d02ad4 SF |
1280 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1281 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1282 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1283 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1284 | pfile_info->Attributes = |
50c2f753 | 1285 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1286 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1287 | pfile_info->AllocationSize = |
1288 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1289 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1290 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1291 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1292 | } |
1293 | } | |
1294 | ||
1295 | cifs_buf_release(pSMB); | |
1296 | if (rc == -EAGAIN) | |
1297 | goto OldOpenRetry; | |
1298 | return rc; | |
1299 | } | |
1300 | ||
1da177e4 | 1301 | int |
d81b8a40 PS |
1302 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1303 | FILE_ALL_INFO *buf) | |
1da177e4 LT |
1304 | { |
1305 | int rc = -EACCES; | |
9bf4fa01 PS |
1306 | OPEN_REQ *req = NULL; |
1307 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1308 | int bytes_returned; |
1309 | int name_len; | |
1310 | __u16 count; | |
d81b8a40 PS |
1311 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1312 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1313 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1314 | const struct nls_table *nls = cifs_sb->local_nls; |
1315 | int create_options = oparms->create_options; | |
1316 | int desired_access = oparms->desired_access; | |
1317 | int disposition = oparms->disposition; | |
1318 | const char *path = oparms->path; | |
1da177e4 LT |
1319 | |
1320 | openRetry: | |
9bf4fa01 PS |
1321 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1322 | (void **)&rsp); | |
1da177e4 LT |
1323 | if (rc) |
1324 | return rc; | |
1325 | ||
9bf4fa01 PS |
1326 | /* no commands go after this */ |
1327 | req->AndXCommand = 0xFF; | |
1da177e4 | 1328 | |
9bf4fa01 PS |
1329 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1330 | /* account for one byte pad to word boundary */ | |
1331 | count = 1; | |
1332 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1333 | path, PATH_MAX, nls, remap); | |
1334 | /* trailing null */ | |
1335 | name_len++; | |
1da177e4 | 1336 | name_len *= 2; |
9bf4fa01 PS |
1337 | req->NameLength = cpu_to_le16(name_len); |
1338 | } else { | |
1339 | /* BB improve check for buffer overruns BB */ | |
1340 | /* no pad */ | |
1341 | count = 0; | |
1342 | name_len = strnlen(path, PATH_MAX); | |
1343 | /* trailing null */ | |
1344 | name_len++; | |
1345 | req->NameLength = cpu_to_le16(name_len); | |
1346 | strncpy(req->fileName, path, name_len); | |
1da177e4 | 1347 | } |
9bf4fa01 PS |
1348 | |
1349 | if (*oplock & REQ_OPLOCK) | |
1350 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1351 | else if (*oplock & REQ_BATCHOPLOCK) | |
1352 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1353 | ||
1354 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1355 | req->AllocationSize = 0; | |
1356 | ||
1357 | /* | |
1358 | * Set file as system file if special file such as fifo and server | |
1359 | * expecting SFU style and no Unix extensions. | |
1360 | */ | |
790fe579 | 1361 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1362 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1363 | else |
9bf4fa01 | 1364 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1365 | |
9bf4fa01 PS |
1366 | /* |
1367 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1368 | * sensitive checks for other servers such as Samba. | |
1369 | */ | |
1da177e4 | 1370 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1371 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1372 | |
67750fb9 | 1373 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1374 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1375 | ||
1376 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1377 | req->CreateDisposition = cpu_to_le32(disposition); | |
1378 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1379 | |
09d1db5c | 1380 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1381 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1382 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1383 | |
1384 | count += name_len; | |
9bf4fa01 | 1385 | inc_rfc1001_len(req, count); |
1da177e4 | 1386 | |
9bf4fa01 PS |
1387 | req->ByteCount = cpu_to_le16(count); |
1388 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1389 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1390 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1391 | if (rc) { |
f96637be | 1392 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1393 | cifs_buf_release(req); |
1394 | if (rc == -EAGAIN) | |
1395 | goto openRetry; | |
1396 | return rc; | |
1da177e4 | 1397 | } |
a5a2b489 | 1398 | |
9bf4fa01 PS |
1399 | /* 1 byte no need to le_to_cpu */ |
1400 | *oplock = rsp->OplockLevel; | |
1401 | /* cifs fid stays in le */ | |
d81b8a40 | 1402 | oparms->fid->netfid = rsp->Fid; |
9bf4fa01 PS |
1403 | |
1404 | /* Let caller know file was created so we can set the mode. */ | |
1405 | /* Do we care about the CreateAction in any other cases? */ | |
1406 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1407 | *oplock |= CIFS_CREATE_ACTION; | |
1408 | ||
1409 | if (buf) { | |
1410 | /* copy from CreationTime to Attributes */ | |
1411 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1412 | /* the file_info buf is endian converted by caller */ | |
1413 | buf->AllocationSize = rsp->AllocationSize; | |
1414 | buf->EndOfFile = rsp->EndOfFile; | |
1415 | buf->NumberOfLinks = cpu_to_le32(1); | |
1416 | buf->DeletePending = 0; | |
1417 | } | |
1418 | ||
1419 | cifs_buf_release(req); | |
1da177e4 LT |
1420 | return rc; |
1421 | } | |
1422 | ||
e28bc5b1 JL |
1423 | /* |
1424 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1425 | * current bigbuf. | |
1426 | */ | |
c42a6abe | 1427 | int |
350be257 | 1428 | cifs_discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1429 | { |
05432e29 RS |
1430 | unsigned int rfclen = server->pdu_size; |
1431 | int remaining = rfclen + server->vals->header_preamble_size - | |
1432 | server->total_read; | |
e28bc5b1 JL |
1433 | |
1434 | while (remaining > 0) { | |
1435 | int length; | |
1436 | ||
1437 | length = cifs_read_from_socket(server, server->bigbuf, | |
1438 | min_t(unsigned int, remaining, | |
1887f601 | 1439 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1440 | if (length < 0) |
1441 | return length; | |
1442 | server->total_read += length; | |
1443 | remaining -= length; | |
1444 | } | |
1445 | ||
e28bc5b1 JL |
1446 | return 0; |
1447 | } | |
1448 | ||
6cc3b242 PS |
1449 | static int |
1450 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1451 | { | |
1452 | int length; | |
1453 | struct cifs_readdata *rdata = mid->callback_data; | |
1454 | ||
350be257 | 1455 | length = cifs_discard_remaining_data(server); |
6cc3b242 | 1456 | dequeue_mid(mid, rdata->result); |
350be257 PS |
1457 | mid->resp_buf = server->smallbuf; |
1458 | server->smallbuf = NULL; | |
6cc3b242 PS |
1459 | return length; |
1460 | } | |
1461 | ||
09a4707e | 1462 | int |
e28bc5b1 JL |
1463 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1464 | { | |
1465 | int length, len; | |
8d5ce4d2 | 1466 | unsigned int data_offset, data_len; |
e28bc5b1 | 1467 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf | 1468 | char *buf = server->smallbuf; |
2e96467d | 1469 | unsigned int buflen = server->pdu_size + |
93012bf9 | 1470 | server->vals->header_preamble_size; |
74dcf418 | 1471 | bool use_rdma_mr = false; |
e28bc5b1 | 1472 | |
f96637be JP |
1473 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1474 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1475 | |
1476 | /* | |
1477 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1478 | * can if there's not enough data. At this point, we've read down to | |
1479 | * the Mid. | |
1480 | */ | |
eb378711 | 1481 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1482 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1483 | |
a6137305 AV |
1484 | length = cifs_read_from_socket(server, |
1485 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1486 | if (length < 0) |
1487 | return length; | |
1488 | server->total_read += length; | |
1489 | ||
511c54a2 PS |
1490 | if (server->ops->is_session_expired && |
1491 | server->ops->is_session_expired(buf)) { | |
1492 | cifs_reconnect(server); | |
1493 | wake_up(&server->response_q); | |
1494 | return -1; | |
1495 | } | |
1496 | ||
6cc3b242 PS |
1497 | if (server->ops->is_status_pending && |
1498 | server->ops->is_status_pending(buf, server, 0)) { | |
350be257 | 1499 | cifs_discard_remaining_data(server); |
6cc3b242 PS |
1500 | return -1; |
1501 | } | |
1502 | ||
e28bc5b1 | 1503 | /* Was the SMB read successful? */ |
eb378711 | 1504 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1505 | if (rdata->result != 0) { |
f96637be JP |
1506 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1507 | __func__, rdata->result); | |
e28bc5b1 JL |
1508 | return cifs_readv_discard(server, mid); |
1509 | } | |
1510 | ||
1511 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1512 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1513 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1514 | __func__, server->total_read, | |
1515 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1516 | rdata->result = -EIO; |
1517 | return cifs_readv_discard(server, mid); | |
1518 | } | |
1519 | ||
93012bf9 RS |
1520 | data_offset = server->ops->read_data_offset(buf) + |
1521 | server->vals->header_preamble_size; | |
e28bc5b1 JL |
1522 | if (data_offset < server->total_read) { |
1523 | /* | |
1524 | * win2k8 sometimes sends an offset of 0 when the read | |
1525 | * is beyond the EOF. Treat it as if the data starts just after | |
1526 | * the header. | |
1527 | */ | |
f96637be JP |
1528 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1529 | __func__, data_offset); | |
e28bc5b1 JL |
1530 | data_offset = server->total_read; |
1531 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1532 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1533 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1534 | __func__, data_offset); | |
e28bc5b1 JL |
1535 | rdata->result = -EIO; |
1536 | return cifs_readv_discard(server, mid); | |
1537 | } | |
1538 | ||
f96637be JP |
1539 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1540 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1541 | |
1542 | len = data_offset - server->total_read; | |
1543 | if (len > 0) { | |
1544 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1545 | length = cifs_read_from_socket(server, |
1546 | buf + server->total_read, len); | |
e28bc5b1 JL |
1547 | if (length < 0) |
1548 | return length; | |
1549 | server->total_read += length; | |
1550 | } | |
1551 | ||
1552 | /* set up first iov for signature check */ | |
738f9de5 PS |
1553 | rdata->iov[0].iov_base = buf; |
1554 | rdata->iov[0].iov_len = 4; | |
1555 | rdata->iov[1].iov_base = buf + 4; | |
1556 | rdata->iov[1].iov_len = server->total_read - 4; | |
1557 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n", | |
1558 | rdata->iov[0].iov_base, server->total_read); | |
e28bc5b1 JL |
1559 | |
1560 | /* how much data is in the response? */ | |
74dcf418 LL |
1561 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1562 | use_rdma_mr = rdata->mr; | |
1563 | #endif | |
1564 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
1565 | if (!use_rdma_mr && (data_offset + data_len > buflen)) { | |
e28bc5b1 JL |
1566 | /* data_len is corrupt -- discard frame */ |
1567 | rdata->result = -EIO; | |
1568 | return cifs_readv_discard(server, mid); | |
1569 | } | |
1570 | ||
8321fec4 JL |
1571 | length = rdata->read_into_pages(server, rdata, data_len); |
1572 | if (length < 0) | |
1573 | return length; | |
e28bc5b1 | 1574 | |
8321fec4 | 1575 | server->total_read += length; |
e28bc5b1 | 1576 | |
f96637be JP |
1577 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1578 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1579 | |
1580 | /* discard anything left over */ | |
5ffef7bf | 1581 | if (server->total_read < buflen) |
e28bc5b1 JL |
1582 | return cifs_readv_discard(server, mid); |
1583 | ||
1584 | dequeue_mid(mid, false); | |
350be257 PS |
1585 | mid->resp_buf = server->smallbuf; |
1586 | server->smallbuf = NULL; | |
e28bc5b1 JL |
1587 | return length; |
1588 | } | |
1589 | ||
e28bc5b1 JL |
1590 | static void |
1591 | cifs_readv_callback(struct mid_q_entry *mid) | |
1592 | { | |
1593 | struct cifs_readdata *rdata = mid->callback_data; | |
1594 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1595 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1596 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1597 | .rq_nvec = 2, | |
8321fec4 JL |
1598 | .rq_pages = rdata->pages, |
1599 | .rq_npages = rdata->nr_pages, | |
1600 | .rq_pagesz = rdata->pagesz, | |
1601 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1602 | |
f96637be JP |
1603 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1604 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1605 | rdata->bytes); | |
e28bc5b1 | 1606 | |
7c9421e1 | 1607 | switch (mid->mid_state) { |
e28bc5b1 JL |
1608 | case MID_RESPONSE_RECEIVED: |
1609 | /* result already set, check signature */ | |
38d77c50 | 1610 | if (server->sign) { |
985e4ff0 SF |
1611 | int rc = 0; |
1612 | ||
bf5ea0e2 | 1613 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1614 | mid->sequence_number); |
985e4ff0 | 1615 | if (rc) |
f96637be JP |
1616 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1617 | rc); | |
e28bc5b1 JL |
1618 | } |
1619 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1620 | task_io_account_read(rdata->got_bytes); |
1621 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1622 | break; |
1623 | case MID_REQUEST_SUBMITTED: | |
1624 | case MID_RETRY_NEEDED: | |
1625 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1626 | if (server->sign && rdata->got_bytes) |
1627 | /* reset bytes number since we can not check a sign */ | |
1628 | rdata->got_bytes = 0; | |
1629 | /* FIXME: should this be counted toward the initiating task? */ | |
1630 | task_io_account_read(rdata->got_bytes); | |
1631 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1632 | break; |
1633 | default: | |
1634 | rdata->result = -EIO; | |
1635 | } | |
1636 | ||
da472fc8 | 1637 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1638 | DeleteMidQEntry(mid); |
a891f0f8 | 1639 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1640 | } |
1641 | ||
1642 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1643 | int | |
1644 | cifs_async_readv(struct cifs_readdata *rdata) | |
1645 | { | |
1646 | int rc; | |
1647 | READ_REQ *smb = NULL; | |
1648 | int wct; | |
1649 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1650 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1651 | .rq_nvec = 2 }; | |
e28bc5b1 | 1652 | |
f96637be JP |
1653 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1654 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1655 | |
1656 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1657 | wct = 12; | |
1658 | else { | |
1659 | wct = 10; /* old style read */ | |
1660 | if ((rdata->offset >> 32) > 0) { | |
1661 | /* can not handle this big offset for old */ | |
1662 | return -EIO; | |
1663 | } | |
1664 | } | |
1665 | ||
1666 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1667 | if (rc) | |
1668 | return rc; | |
1669 | ||
1670 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1671 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1672 | ||
1673 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1674 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1675 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1676 | if (wct == 12) | |
1677 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1678 | smb->Remaining = 0; | |
1679 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1680 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1681 | if (wct == 12) | |
1682 | smb->ByteCount = 0; | |
1683 | else { | |
1684 | /* old style read */ | |
1685 | struct smb_com_readx_req *smbr = | |
1686 | (struct smb_com_readx_req *)smb; | |
1687 | smbr->ByteCount = 0; | |
1688 | } | |
1689 | ||
1690 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1691 | rdata->iov[0].iov_base = smb; |
1692 | rdata->iov[0].iov_len = 4; | |
1693 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1694 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1695 | |
6993f74a | 1696 | kref_get(&rdata->refcount); |
fec344e3 | 1697 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
9b7c18a2 | 1698 | cifs_readv_callback, NULL, rdata, 0); |
e28bc5b1 JL |
1699 | |
1700 | if (rc == 0) | |
44c58186 | 1701 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1702 | else |
1703 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1704 | |
1705 | cifs_small_buf_release(smb); | |
1706 | return rc; | |
1707 | } | |
1708 | ||
1da177e4 | 1709 | int |
6d5786a3 PS |
1710 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1711 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1712 | { |
1713 | int rc = -EACCES; | |
1714 | READ_REQ *pSMB = NULL; | |
1715 | READ_RSP *pSMBr = NULL; | |
1716 | char *pReadData = NULL; | |
bfa0d75a | 1717 | int wct; |
ec637e3f SF |
1718 | int resp_buf_type = 0; |
1719 | struct kvec iov[1]; | |
da502f7d | 1720 | struct kvec rsp_iov; |
d4ffff1f PS |
1721 | __u32 pid = io_parms->pid; |
1722 | __u16 netfid = io_parms->netfid; | |
1723 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1724 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1725 | unsigned int count = io_parms->length; |
1da177e4 | 1726 | |
f96637be | 1727 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1728 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1729 | wct = 12; |
4c3130ef | 1730 | else { |
bfa0d75a | 1731 | wct = 10; /* old style read */ |
d4ffff1f | 1732 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1733 | /* can not handle this big offset for old */ |
1734 | return -EIO; | |
1735 | } | |
1736 | } | |
1da177e4 LT |
1737 | |
1738 | *nbytes = 0; | |
ec637e3f | 1739 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1740 | if (rc) |
1741 | return rc; | |
1742 | ||
d4ffff1f PS |
1743 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1744 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1745 | ||
1da177e4 LT |
1746 | /* tcon and ses pointer are checked in smb_init */ |
1747 | if (tcon->ses->server == NULL) | |
1748 | return -ECONNABORTED; | |
1749 | ||
ec637e3f | 1750 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1751 | pSMB->Fid = netfid; |
d4ffff1f | 1752 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1753 | if (wct == 12) |
d4ffff1f | 1754 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1755 | |
1da177e4 LT |
1756 | pSMB->Remaining = 0; |
1757 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1758 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1759 | if (wct == 12) |
bfa0d75a SF |
1760 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1761 | else { | |
1762 | /* old style read */ | |
50c2f753 | 1763 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1764 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1765 | pSMBW->ByteCount = 0; |
bfa0d75a | 1766 | } |
ec637e3f SF |
1767 | |
1768 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1769 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1770 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1771 | CIFS_LOG_ERROR, &rsp_iov); | |
1772 | cifs_small_buf_release(pSMB); | |
44c58186 | 1773 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1774 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1775 | if (rc) { |
f96637be | 1776 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1777 | } else { |
1778 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1779 | data_length = data_length << 16; | |
1780 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1781 | *nbytes = data_length; | |
1782 | ||
1783 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1784 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1785 | || (data_length > count)) { |
f96637be | 1786 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1787 | data_length, count); |
1da177e4 LT |
1788 | rc = -EIO; |
1789 | *nbytes = 0; | |
1790 | } else { | |
ec637e3f | 1791 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1792 | le16_to_cpu(pSMBr->DataOffset); |
1793 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1794 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1795 | rc = -EFAULT; |
26f57364 | 1796 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1797 | if (*buf) |
50c2f753 | 1798 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1799 | } |
1800 | } | |
1da177e4 | 1801 | |
790fe579 | 1802 | if (*buf) { |
da502f7d | 1803 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1804 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1805 | /* return buffer to caller to free */ |
da502f7d | 1806 | *buf = rsp_iov.iov_base; |
790fe579 | 1807 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1808 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1809 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1810 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1811 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1812 | |
1813 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1814 | since file handle passed in no longer valid */ |
1815 | return rc; | |
1816 | } | |
1817 | ||
ec637e3f | 1818 | |
1da177e4 | 1819 | int |
6d5786a3 | 1820 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1821 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1822 | { |
1823 | int rc = -EACCES; | |
1824 | WRITE_REQ *pSMB = NULL; | |
1825 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1826 | int bytes_returned, wct; |
1da177e4 LT |
1827 | __u32 bytes_sent; |
1828 | __u16 byte_count; | |
fa2989f4 PS |
1829 | __u32 pid = io_parms->pid; |
1830 | __u16 netfid = io_parms->netfid; | |
1831 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1832 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1833 | unsigned int count = io_parms->length; |
1da177e4 | 1834 | |
a24e2d7d SF |
1835 | *nbytes = 0; |
1836 | ||
f96637be | 1837 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1838 | if (tcon->ses == NULL) |
1c955187 SF |
1839 | return -ECONNABORTED; |
1840 | ||
790fe579 | 1841 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1842 | wct = 14; |
4c3130ef | 1843 | else { |
1c955187 | 1844 | wct = 12; |
4c3130ef SF |
1845 | if ((offset >> 32) > 0) { |
1846 | /* can not handle big offset for old srv */ | |
1847 | return -EIO; | |
1848 | } | |
1849 | } | |
1c955187 SF |
1850 | |
1851 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1852 | (void **) &pSMBr); |
1853 | if (rc) | |
1854 | return rc; | |
fa2989f4 PS |
1855 | |
1856 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1857 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1858 | ||
1da177e4 LT |
1859 | /* tcon and ses pointer are checked in smb_init */ |
1860 | if (tcon->ses->server == NULL) | |
1861 | return -ECONNABORTED; | |
1862 | ||
1863 | pSMB->AndXCommand = 0xFF; /* none */ | |
1864 | pSMB->Fid = netfid; | |
1865 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1866 | if (wct == 14) |
1c955187 | 1867 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1868 | |
1da177e4 LT |
1869 | pSMB->Reserved = 0xFFFFFFFF; |
1870 | pSMB->WriteMode = 0; | |
1871 | pSMB->Remaining = 0; | |
1872 | ||
50c2f753 | 1873 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1874 | can send more if LARGE_WRITE_X capability returned by the server and if |
1875 | our buffer is big enough or if we convert to iovecs on socket writes | |
1876 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1877 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1878 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1879 | } else { | |
1880 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1881 | & ~0xFF; | |
1882 | } | |
1883 | ||
1884 | if (bytes_sent > count) | |
1885 | bytes_sent = count; | |
1886 | pSMB->DataOffset = | |
50c2f753 | 1887 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1888 | if (buf) |
61e74801 | 1889 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1890 | else if (count != 0) { |
1da177e4 LT |
1891 | /* No buffer */ |
1892 | cifs_buf_release(pSMB); | |
1893 | return -EINVAL; | |
e30dcf3a | 1894 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1895 | if (wct == 14) |
e30dcf3a | 1896 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1897 | else /* wct == 12 */ |
e30dcf3a | 1898 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1899 | |
1da177e4 LT |
1900 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1901 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1902 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1903 | |
790fe579 | 1904 | if (wct == 14) |
1c955187 | 1905 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1906 | else { /* old style write has byte count 4 bytes earlier |
1907 | so 4 bytes pad */ | |
1908 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1909 | (struct smb_com_writex_req *)pSMB; |
1910 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1911 | } | |
1da177e4 LT |
1912 | |
1913 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1914 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1915 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1916 | if (rc) { |
f96637be | 1917 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1918 | } else { |
1919 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1920 | *nbytes = (*nbytes) << 16; | |
1921 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1922 | |
1923 | /* | |
1924 | * Mask off high 16 bits when bytes written as returned by the | |
1925 | * server is greater than bytes requested by the client. Some | |
1926 | * OS/2 servers are known to set incorrect CountHigh values. | |
1927 | */ | |
1928 | if (*nbytes > count) | |
1929 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1930 | } |
1931 | ||
1932 | cifs_buf_release(pSMB); | |
1933 | ||
50c2f753 | 1934 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1935 | since file handle passed in no longer valid */ |
1936 | ||
1937 | return rc; | |
1938 | } | |
1939 | ||
c28c89fc JL |
1940 | void |
1941 | cifs_writedata_release(struct kref *refcount) | |
1942 | { | |
1943 | struct cifs_writedata *wdata = container_of(refcount, | |
1944 | struct cifs_writedata, refcount); | |
db223a59 LL |
1945 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1946 | if (wdata->mr) { | |
1947 | smbd_deregister_mr(wdata->mr); | |
1948 | wdata->mr = NULL; | |
1949 | } | |
1950 | #endif | |
c28c89fc JL |
1951 | |
1952 | if (wdata->cfile) | |
1953 | cifsFileInfo_put(wdata->cfile); | |
1954 | ||
8e7360f6 | 1955 | kvfree(wdata->pages); |
c28c89fc JL |
1956 | kfree(wdata); |
1957 | } | |
1958 | ||
1959 | /* | |
1960 | * Write failed with a retryable error. Resend the write request. It's also | |
1961 | * possible that the page was redirtied so re-clean the page. | |
1962 | */ | |
1963 | static void | |
1964 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1965 | { | |
7f6c5008 | 1966 | int i, rc = 0; |
2b0143b5 | 1967 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 1968 | struct TCP_Server_Info *server; |
7f6c5008 | 1969 | unsigned int rest_len; |
c28c89fc | 1970 | |
7f6c5008 PS |
1971 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1972 | i = 0; | |
1973 | rest_len = wdata->bytes; | |
c28c89fc | 1974 | do { |
7f6c5008 PS |
1975 | struct cifs_writedata *wdata2; |
1976 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
1977 | ||
1978 | wsize = server->ops->wp_retry_size(inode); | |
1979 | if (wsize < rest_len) { | |
09cbfeaf | 1980 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
1981 | if (!nr_pages) { |
1982 | rc = -ENOTSUPP; | |
1983 | break; | |
1984 | } | |
09cbfeaf KS |
1985 | cur_len = nr_pages * PAGE_SIZE; |
1986 | tailsz = PAGE_SIZE; | |
7f6c5008 | 1987 | } else { |
09cbfeaf | 1988 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 1989 | cur_len = rest_len; |
09cbfeaf | 1990 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 1991 | } |
c28c89fc | 1992 | |
7f6c5008 PS |
1993 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
1994 | if (!wdata2) { | |
1995 | rc = -ENOMEM; | |
1996 | break; | |
c51bb0ea | 1997 | } |
7f6c5008 PS |
1998 | |
1999 | for (j = 0; j < nr_pages; j++) { | |
2000 | wdata2->pages[j] = wdata->pages[i + j]; | |
2001 | lock_page(wdata2->pages[j]); | |
2002 | clear_page_dirty_for_io(wdata2->pages[j]); | |
2003 | } | |
2004 | ||
2005 | wdata2->sync_mode = wdata->sync_mode; | |
2006 | wdata2->nr_pages = nr_pages; | |
2007 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 2008 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
2009 | wdata2->tailsz = tailsz; |
2010 | wdata2->bytes = cur_len; | |
2011 | ||
2012 | wdata2->cfile = find_writable_file(CIFS_I(inode), false); | |
2013 | if (!wdata2->cfile) { | |
2014 | cifs_dbg(VFS, "No writable handles for inode\n"); | |
2015 | rc = -EBADF; | |
2016 | break; | |
2017 | } | |
2018 | wdata2->pid = wdata2->cfile->pid; | |
2019 | rc = server->ops->async_writev(wdata2, cifs_writedata_release); | |
2020 | ||
2021 | for (j = 0; j < nr_pages; j++) { | |
2022 | unlock_page(wdata2->pages[j]); | |
2023 | if (rc != 0 && rc != -EAGAIN) { | |
2024 | SetPageError(wdata2->pages[j]); | |
2025 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 2026 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
2027 | } |
2028 | } | |
2029 | ||
2030 | if (rc) { | |
2031 | kref_put(&wdata2->refcount, cifs_writedata_release); | |
2032 | if (rc == -EAGAIN) | |
2033 | continue; | |
2034 | break; | |
2035 | } | |
2036 | ||
2037 | rest_len -= cur_len; | |
2038 | i += nr_pages; | |
2039 | } while (i < wdata->nr_pages); | |
c28c89fc JL |
2040 | |
2041 | mapping_set_error(inode->i_mapping, rc); | |
2042 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2043 | } | |
2044 | ||
c2e87640 | 2045 | void |
c28c89fc JL |
2046 | cifs_writev_complete(struct work_struct *work) |
2047 | { | |
2048 | struct cifs_writedata *wdata = container_of(work, | |
2049 | struct cifs_writedata, work); | |
2b0143b5 | 2050 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
2051 | int i = 0; |
2052 | ||
2053 | if (wdata->result == 0) { | |
597b027f | 2054 | spin_lock(&inode->i_lock); |
c28c89fc | 2055 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2056 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2057 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2058 | wdata->bytes); | |
2059 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2060 | return cifs_writev_requeue(wdata); | |
2061 | ||
2062 | for (i = 0; i < wdata->nr_pages; i++) { | |
2063 | struct page *page = wdata->pages[i]; | |
2064 | if (wdata->result == -EAGAIN) | |
2065 | __set_page_dirty_nobuffers(page); | |
2066 | else if (wdata->result < 0) | |
2067 | SetPageError(page); | |
2068 | end_page_writeback(page); | |
09cbfeaf | 2069 | put_page(page); |
c28c89fc JL |
2070 | } |
2071 | if (wdata->result != -EAGAIN) | |
2072 | mapping_set_error(inode->i_mapping, wdata->result); | |
2073 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2074 | } | |
2075 | ||
2076 | struct cifs_writedata * | |
c2e87640 | 2077 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
8e7360f6 LL |
2078 | { |
2079 | struct page **pages = | |
6396bb22 | 2080 | kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); |
8e7360f6 LL |
2081 | if (pages) |
2082 | return cifs_writedata_direct_alloc(pages, complete); | |
2083 | ||
2084 | return NULL; | |
2085 | } | |
2086 | ||
2087 | struct cifs_writedata * | |
2088 | cifs_writedata_direct_alloc(struct page **pages, work_func_t complete) | |
c28c89fc JL |
2089 | { |
2090 | struct cifs_writedata *wdata; | |
2091 | ||
8e7360f6 | 2092 | wdata = kzalloc(sizeof(*wdata), GFP_NOFS); |
c28c89fc | 2093 | if (wdata != NULL) { |
8e7360f6 | 2094 | wdata->pages = pages; |
c28c89fc | 2095 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2096 | INIT_LIST_HEAD(&wdata->list); |
2097 | init_completion(&wdata->done); | |
2098 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2099 | } |
2100 | return wdata; | |
2101 | } | |
2102 | ||
2103 | /* | |
7c9421e1 | 2104 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2105 | * workqueue completion task. |
2106 | */ | |
2107 | static void | |
2108 | cifs_writev_callback(struct mid_q_entry *mid) | |
2109 | { | |
2110 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2111 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2112 | unsigned int written; |
2113 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2114 | ||
7c9421e1 | 2115 | switch (mid->mid_state) { |
c28c89fc JL |
2116 | case MID_RESPONSE_RECEIVED: |
2117 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2118 | if (wdata->result != 0) | |
2119 | break; | |
2120 | ||
2121 | written = le16_to_cpu(smb->CountHigh); | |
2122 | written <<= 16; | |
2123 | written += le16_to_cpu(smb->Count); | |
2124 | /* | |
2125 | * Mask off high 16 bits when bytes written as returned | |
2126 | * by the server is greater than bytes requested by the | |
2127 | * client. OS/2 servers are known to set incorrect | |
2128 | * CountHigh values. | |
2129 | */ | |
2130 | if (written > wdata->bytes) | |
2131 | written &= 0xFFFF; | |
2132 | ||
2133 | if (written < wdata->bytes) | |
2134 | wdata->result = -ENOSPC; | |
2135 | else | |
2136 | wdata->bytes = written; | |
2137 | break; | |
2138 | case MID_REQUEST_SUBMITTED: | |
2139 | case MID_RETRY_NEEDED: | |
2140 | wdata->result = -EAGAIN; | |
2141 | break; | |
2142 | default: | |
2143 | wdata->result = -EIO; | |
2144 | break; | |
2145 | } | |
2146 | ||
da472fc8 | 2147 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2148 | DeleteMidQEntry(mid); |
a891f0f8 | 2149 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2150 | } |
2151 | ||
2152 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2153 | int | |
4a5c80d7 SF |
2154 | cifs_async_writev(struct cifs_writedata *wdata, |
2155 | void (*release)(struct kref *kref)) | |
c28c89fc | 2156 | { |
eddb079d | 2157 | int rc = -EACCES; |
c28c89fc JL |
2158 | WRITE_REQ *smb = NULL; |
2159 | int wct; | |
96daf2b0 | 2160 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 2161 | struct kvec iov[2]; |
fec344e3 | 2162 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2163 | |
2164 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2165 | wct = 14; | |
2166 | } else { | |
2167 | wct = 12; | |
2168 | if (wdata->offset >> 32 > 0) { | |
2169 | /* can not handle big offset for old srv */ | |
2170 | return -EIO; | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2175 | if (rc) | |
2176 | goto async_writev_out; | |
2177 | ||
fe5f5d2e JL |
2178 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2179 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2180 | |
c28c89fc | 2181 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2182 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2183 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2184 | if (wct == 14) | |
2185 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2186 | smb->Reserved = 0xFFFFFFFF; | |
2187 | smb->WriteMode = 0; | |
2188 | smb->Remaining = 0; | |
2189 | ||
2190 | smb->DataOffset = | |
2191 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2192 | ||
2193 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
2194 | iov[0].iov_len = 4; |
2195 | iov[0].iov_base = smb; | |
2196 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
2197 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 2198 | |
738f9de5 PS |
2199 | rqst.rq_iov = iov; |
2200 | rqst.rq_nvec = 2; | |
eddb079d JL |
2201 | rqst.rq_pages = wdata->pages; |
2202 | rqst.rq_npages = wdata->nr_pages; | |
2203 | rqst.rq_pagesz = wdata->pagesz; | |
2204 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2205 | |
f96637be JP |
2206 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2207 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2208 | |
2209 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2210 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2211 | ||
2212 | if (wct == 14) { | |
2213 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2214 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2215 | } else { | |
2216 | /* wct == 12 */ | |
2217 | struct smb_com_writex_req *smbw = | |
2218 | (struct smb_com_writex_req *)smb; | |
2219 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2220 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 2221 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2222 | } |
2223 | ||
2224 | kref_get(&wdata->refcount); | |
fec344e3 | 2225 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
9b7c18a2 | 2226 | cifs_writev_callback, NULL, wdata, 0); |
c28c89fc JL |
2227 | |
2228 | if (rc == 0) | |
44c58186 | 2229 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2230 | else |
4a5c80d7 | 2231 | kref_put(&wdata->refcount, release); |
c28c89fc | 2232 | |
c28c89fc JL |
2233 | async_writev_out: |
2234 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2235 | return rc; |
2236 | } | |
2237 | ||
d6e04ae6 | 2238 | int |
6d5786a3 | 2239 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2240 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2241 | { |
2242 | int rc = -EACCES; | |
2243 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2244 | int wct; |
d6e04ae6 | 2245 | int smb_hdr_len; |
ec637e3f | 2246 | int resp_buf_type = 0; |
fa2989f4 PS |
2247 | __u32 pid = io_parms->pid; |
2248 | __u16 netfid = io_parms->netfid; | |
2249 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2250 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2251 | unsigned int count = io_parms->length; |
da502f7d | 2252 | struct kvec rsp_iov; |
1da177e4 | 2253 | |
fbec9ab9 JL |
2254 | *nbytes = 0; |
2255 | ||
f96637be | 2256 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2257 | |
4c3130ef | 2258 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2259 | wct = 14; |
4c3130ef | 2260 | } else { |
8cc64c6e | 2261 | wct = 12; |
4c3130ef SF |
2262 | if ((offset >> 32) > 0) { |
2263 | /* can not handle big offset for old srv */ | |
2264 | return -EIO; | |
2265 | } | |
2266 | } | |
8cc64c6e | 2267 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2268 | if (rc) |
2269 | return rc; | |
fa2989f4 PS |
2270 | |
2271 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2272 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2273 | ||
1da177e4 LT |
2274 | /* tcon and ses pointer are checked in smb_init */ |
2275 | if (tcon->ses->server == NULL) | |
2276 | return -ECONNABORTED; | |
2277 | ||
d6e04ae6 | 2278 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2279 | pSMB->Fid = netfid; |
2280 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2281 | if (wct == 14) |
8cc64c6e | 2282 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2283 | pSMB->Reserved = 0xFFFFFFFF; |
2284 | pSMB->WriteMode = 0; | |
2285 | pSMB->Remaining = 0; | |
d6e04ae6 | 2286 | |
1da177e4 | 2287 | pSMB->DataOffset = |
50c2f753 | 2288 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2289 | |
3e84469d SF |
2290 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2291 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2292 | /* header + 1 byte pad */ |
2293 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2294 | if (wct == 14) |
be8e3b00 | 2295 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2296 | else /* wct == 12 */ |
be8e3b00 | 2297 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2298 | if (wct == 14) |
8cc64c6e SF |
2299 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2300 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2301 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2302 | (struct smb_com_writex_req *)pSMB; |
2303 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2304 | } | |
3e84469d | 2305 | iov[0].iov_base = pSMB; |
790fe579 | 2306 | if (wct == 14) |
ec637e3f SF |
2307 | iov[0].iov_len = smb_hdr_len + 4; |
2308 | else /* wct == 12 pad bigger by four bytes */ | |
2309 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2310 | |
da502f7d PS |
2311 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
2312 | &rsp_iov); | |
2313 | cifs_small_buf_release(pSMB); | |
44c58186 | 2314 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2315 | if (rc) { |
f96637be | 2316 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2317 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2318 | /* presumably this can not happen, but best to be safe */ |
2319 | rc = -EIO; | |
d6e04ae6 | 2320 | } else { |
da502f7d | 2321 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
2322 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2323 | *nbytes = (*nbytes) << 16; | |
2324 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2325 | |
2326 | /* | |
2327 | * Mask off high 16 bits when bytes written as returned by the | |
2328 | * server is greater than bytes requested by the client. OS/2 | |
2329 | * servers are known to set incorrect CountHigh values. | |
2330 | */ | |
2331 | if (*nbytes > count) | |
2332 | *nbytes &= 0xFFFF; | |
50c2f753 | 2333 | } |
1da177e4 | 2334 | |
da502f7d | 2335 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 2336 | |
50c2f753 | 2337 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2338 | since file handle passed in no longer valid */ |
2339 | ||
2340 | return rc; | |
2341 | } | |
d6e04ae6 | 2342 | |
6d5786a3 PS |
2343 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2344 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2345 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2346 | { | |
2347 | int rc = 0; | |
2348 | LOCK_REQ *pSMB = NULL; | |
2349 | struct kvec iov[2]; | |
da502f7d | 2350 | struct kvec rsp_iov; |
9ee305b7 PS |
2351 | int resp_buf_type; |
2352 | __u16 count; | |
2353 | ||
f96637be JP |
2354 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2355 | num_lock, num_unlock); | |
9ee305b7 PS |
2356 | |
2357 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2358 | if (rc) | |
2359 | return rc; | |
2360 | ||
2361 | pSMB->Timeout = 0; | |
2362 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2363 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2364 | pSMB->LockType = lock_type; | |
2365 | pSMB->AndXCommand = 0xFF; /* none */ | |
2366 | pSMB->Fid = netfid; /* netfid stays le */ | |
2367 | ||
2368 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2369 | inc_rfc1001_len(pSMB, count); | |
2370 | pSMB->ByteCount = cpu_to_le16(count); | |
2371 | ||
2372 | iov[0].iov_base = (char *)pSMB; | |
2373 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2374 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2375 | iov[1].iov_base = (char *)buf; | |
2376 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2377 | ||
44c58186 | 2378 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
da502f7d PS |
2379 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP, |
2380 | &rsp_iov); | |
2381 | cifs_small_buf_release(pSMB); | |
9ee305b7 | 2382 | if (rc) |
f96637be | 2383 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2384 | |
2385 | return rc; | |
2386 | } | |
d6e04ae6 | 2387 | |
1da177e4 | 2388 | int |
6d5786a3 | 2389 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2390 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2391 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2392 | const __u32 numLock, const __u8 lockType, |
2393 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2394 | { |
2395 | int rc = 0; | |
2396 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2397 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2398 | int bytes_returned; |
a891f0f8 | 2399 | int flags = 0; |
1da177e4 LT |
2400 | __u16 count; |
2401 | ||
f96637be JP |
2402 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2403 | (int)waitFlag, numLock); | |
46810cbf SF |
2404 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2405 | ||
1da177e4 LT |
2406 | if (rc) |
2407 | return rc; | |
2408 | ||
790fe579 | 2409 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2410 | /* no response expected */ |
2411 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2412 | pSMB->Timeout = 0; |
4b18f2a9 | 2413 | } else if (waitFlag) { |
a891f0f8 | 2414 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2415 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2416 | } else { | |
2417 | pSMB->Timeout = 0; | |
2418 | } | |
2419 | ||
2420 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2421 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2422 | pSMB->LockType = lockType; | |
12fed00d | 2423 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2424 | pSMB->AndXCommand = 0xFF; /* none */ |
2425 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2426 | ||
790fe579 | 2427 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2428 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2429 | /* BB where to store pid high? */ |
2430 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2431 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2432 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2433 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2434 | count = sizeof(LOCKING_ANDX_RANGE); | |
2435 | } else { | |
2436 | /* oplock break */ | |
2437 | count = 0; | |
2438 | } | |
be8e3b00 | 2439 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2440 | pSMB->ByteCount = cpu_to_le16(count); |
2441 | ||
da502f7d | 2442 | if (waitFlag) |
7ee1af76 | 2443 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 2444 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 2445 | else |
a891f0f8 | 2446 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 2447 | cifs_small_buf_release(pSMB); |
44c58186 | 2448 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2449 | if (rc) |
f96637be | 2450 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2451 | |
50c2f753 | 2452 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2453 | since file handle passed in no longer valid */ |
2454 | return rc; | |
2455 | } | |
2456 | ||
08547b03 | 2457 | int |
6d5786a3 | 2458 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2459 | const __u16 smb_file_id, const __u32 netpid, |
2460 | const loff_t start_offset, const __u64 len, | |
2461 | struct file_lock *pLockData, const __u16 lock_type, | |
2462 | const bool waitFlag) | |
08547b03 SF |
2463 | { |
2464 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2465 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2466 | struct cifs_posix_lock *parm_data; |
2467 | int rc = 0; | |
3a5ff61c | 2468 | int timeout = 0; |
08547b03 | 2469 | int bytes_returned = 0; |
133672ef | 2470 | int resp_buf_type = 0; |
08547b03 | 2471 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2472 | struct kvec iov[1]; |
da502f7d | 2473 | struct kvec rsp_iov; |
08547b03 | 2474 | |
f96637be | 2475 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2476 | |
08547b03 SF |
2477 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2478 | ||
2479 | if (rc) | |
2480 | return rc; | |
2481 | ||
2482 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2483 | ||
50c2f753 | 2484 | params = 6; |
08547b03 SF |
2485 | pSMB->MaxSetupCount = 0; |
2486 | pSMB->Reserved = 0; | |
2487 | pSMB->Flags = 0; | |
08547b03 SF |
2488 | pSMB->Reserved2 = 0; |
2489 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2490 | offset = param_offset + params; | |
2491 | ||
08547b03 SF |
2492 | count = sizeof(struct cifs_posix_lock); |
2493 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2494 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2495 | pSMB->SetupCount = 1; |
2496 | pSMB->Reserved3 = 0; | |
c5fd363d | 2497 | if (pLockData) |
08547b03 SF |
2498 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2499 | else | |
2500 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2501 | byte_count = 3 /* pad */ + params + count; | |
2502 | pSMB->DataCount = cpu_to_le16(count); | |
2503 | pSMB->ParameterCount = cpu_to_le16(params); | |
2504 | pSMB->TotalDataCount = pSMB->DataCount; | |
2505 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2506 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2507 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2508 | (((char *) &pSMB->hdr.Protocol) + offset); |
2509 | ||
2510 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2511 | if (waitFlag) { |
133672ef | 2512 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2513 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2514 | pSMB->Timeout = cpu_to_le32(-1); |
2515 | } else | |
2516 | pSMB->Timeout = 0; | |
2517 | ||
4f6bcec9 | 2518 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2519 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2520 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2521 | |
2522 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2523 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2524 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2525 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2526 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2527 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2528 | if (waitFlag) { |
2529 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2530 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2531 | } else { | |
133672ef | 2532 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2533 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2534 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2535 | &resp_buf_type, timeout, &rsp_iov); |
2536 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2537 | } |
da502f7d | 2538 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2539 | |
08547b03 | 2540 | if (rc) { |
f96637be | 2541 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2542 | } else if (pLockData) { |
fc94cdb9 SF |
2543 | /* lock structure can be returned on get */ |
2544 | __u16 data_offset; | |
2545 | __u16 data_count; | |
2546 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2547 | ||
820a803f | 2548 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2549 | rc = -EIO; /* bad smb */ |
2550 | goto plk_err_exit; | |
2551 | } | |
fc94cdb9 SF |
2552 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2553 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2554 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2555 | rc = -EIO; |
2556 | goto plk_err_exit; | |
2557 | } | |
2558 | parm_data = (struct cifs_posix_lock *) | |
2559 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2560 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2561 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2562 | else { |
2563 | if (parm_data->lock_type == | |
bc09d141 | 2564 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2565 | pLockData->fl_type = F_RDLCK; |
2566 | else if (parm_data->lock_type == | |
bc09d141 | 2567 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2568 | pLockData->fl_type = F_WRLCK; |
2569 | ||
5443d130 SF |
2570 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2571 | pLockData->fl_end = pLockData->fl_start + | |
2572 | le64_to_cpu(parm_data->length) - 1; | |
9d5b86ac | 2573 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2574 | } |
08547b03 | 2575 | } |
50c2f753 | 2576 | |
fc94cdb9 | 2577 | plk_err_exit: |
da502f7d | 2578 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2579 | |
08547b03 SF |
2580 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2581 | since file handle passed in no longer valid */ | |
2582 | ||
2583 | return rc; | |
2584 | } | |
2585 | ||
2586 | ||
1da177e4 | 2587 | int |
6d5786a3 | 2588 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2589 | { |
2590 | int rc = 0; | |
2591 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2592 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2593 | |
2594 | /* do not retry on dead session on close */ | |
2595 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2596 | if (rc == -EAGAIN) |
1da177e4 LT |
2597 | return 0; |
2598 | if (rc) | |
2599 | return rc; | |
2600 | ||
1da177e4 | 2601 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2602 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2603 | pSMB->ByteCount = 0; |
792af7b0 | 2604 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2605 | cifs_small_buf_release(pSMB); |
44c58186 | 2606 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2607 | if (rc) { |
790fe579 | 2608 | if (rc != -EINTR) { |
1da177e4 | 2609 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2610 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2611 | } |
2612 | } | |
2613 | ||
1da177e4 | 2614 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2615 | if (rc == -EAGAIN) |
1da177e4 LT |
2616 | rc = 0; |
2617 | ||
2618 | return rc; | |
2619 | } | |
2620 | ||
b298f223 | 2621 | int |
6d5786a3 | 2622 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2623 | { |
2624 | int rc = 0; | |
2625 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2626 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2627 | |
2628 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2629 | if (rc) | |
2630 | return rc; | |
2631 | ||
2632 | pSMB->FileID = (__u16) smb_file_id; | |
2633 | pSMB->ByteCount = 0; | |
792af7b0 | 2634 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2635 | cifs_small_buf_release(pSMB); |
44c58186 | 2636 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2637 | if (rc) |
f96637be | 2638 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2639 | |
2640 | return rc; | |
2641 | } | |
2642 | ||
1da177e4 | 2643 | int |
6d5786a3 | 2644 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2645 | const char *from_name, const char *to_name, |
2646 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2647 | { |
2648 | int rc = 0; | |
2649 | RENAME_REQ *pSMB = NULL; | |
2650 | RENAME_RSP *pSMBr = NULL; | |
2651 | int bytes_returned; | |
2652 | int name_len, name_len2; | |
2653 | __u16 count; | |
2baa2682 | 2654 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2655 | |
f96637be | 2656 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2657 | renameRetry: |
2658 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2659 | (void **) &pSMBr); | |
2660 | if (rc) | |
2661 | return rc; | |
2662 | ||
2663 | pSMB->BufferFormat = 0x04; | |
2664 | pSMB->SearchAttributes = | |
2665 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2666 | ATTR_DIRECTORY); | |
2667 | ||
2668 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2669 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2670 | from_name, PATH_MAX, | |
2671 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2672 | name_len++; /* trailing null */ |
2673 | name_len *= 2; | |
2674 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2675 | /* protocol requires ASCII signature byte on Unicode string */ | |
2676 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2677 | name_len2 = | |
acbbb76a | 2678 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2679 | to_name, PATH_MAX, cifs_sb->local_nls, |
2680 | remap); | |
1da177e4 LT |
2681 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2682 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2683 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2684 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2685 | name_len++; /* trailing null */ |
8ceb9843 PS |
2686 | strncpy(pSMB->OldFileName, from_name, name_len); |
2687 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2688 | name_len2++; /* trailing null */ |
2689 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2690 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2691 | name_len2++; /* trailing null */ |
2692 | name_len2++; /* signature byte */ | |
2693 | } | |
2694 | ||
2695 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2696 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2697 | pSMB->ByteCount = cpu_to_le16(count); |
2698 | ||
2699 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2700 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2701 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2702 | if (rc) |
f96637be | 2703 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2704 | |
1da177e4 LT |
2705 | cifs_buf_release(pSMB); |
2706 | ||
2707 | if (rc == -EAGAIN) | |
2708 | goto renameRetry; | |
2709 | ||
2710 | return rc; | |
2711 | } | |
2712 | ||
6d5786a3 | 2713 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2714 | int netfid, const char *target_name, |
50c2f753 | 2715 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2716 | { |
2717 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2718 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2719 | struct set_file_rename *rename_info; |
1da177e4 LT |
2720 | char *data_offset; |
2721 | char dummy_string[30]; | |
2722 | int rc = 0; | |
2723 | int bytes_returned = 0; | |
2724 | int len_of_str; | |
2725 | __u16 params, param_offset, offset, count, byte_count; | |
2726 | ||
f96637be | 2727 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2728 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2729 | (void **) &pSMBr); | |
2730 | if (rc) | |
2731 | return rc; | |
2732 | ||
2733 | params = 6; | |
2734 | pSMB->MaxSetupCount = 0; | |
2735 | pSMB->Reserved = 0; | |
2736 | pSMB->Flags = 0; | |
2737 | pSMB->Timeout = 0; | |
2738 | pSMB->Reserved2 = 0; | |
2739 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2740 | offset = param_offset + params; | |
2741 | ||
2742 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2743 | rename_info = (struct set_file_rename *) data_offset; | |
2744 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2745 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2746 | pSMB->SetupCount = 1; |
2747 | pSMB->Reserved3 = 0; | |
2748 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2749 | byte_count = 3 /* pad */ + params; | |
2750 | pSMB->ParameterCount = cpu_to_le16(params); | |
2751 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2752 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2753 | pSMB->DataOffset = cpu_to_le16(offset); | |
2754 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2755 | rename_info->overwrite = cpu_to_le32(1); | |
2756 | rename_info->root_fid = 0; | |
2757 | /* unicode only call */ | |
790fe579 | 2758 | if (target_name == NULL) { |
50c2f753 | 2759 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2760 | len_of_str = |
2761 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2762 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2763 | } else { |
acbbb76a SF |
2764 | len_of_str = |
2765 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2766 | target_name, PATH_MAX, nls_codepage, |
2767 | remap); | |
1da177e4 LT |
2768 | } |
2769 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2770 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2771 | byte_count += count; |
2772 | pSMB->DataCount = cpu_to_le16(count); | |
2773 | pSMB->TotalDataCount = pSMB->DataCount; | |
2774 | pSMB->Fid = netfid; | |
2775 | pSMB->InformationLevel = | |
2776 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2777 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2778 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2779 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2780 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2781 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2782 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2783 | if (rc) |
f96637be JP |
2784 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2785 | rc); | |
a5a2b489 | 2786 | |
1da177e4 LT |
2787 | cifs_buf_release(pSMB); |
2788 | ||
2789 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2790 | since file handle passed in no longer valid */ | |
2791 | ||
2792 | return rc; | |
2793 | } | |
2794 | ||
2795 | int | |
6d5786a3 PS |
2796 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2797 | const char *fromName, const __u16 target_tid, const char *toName, | |
2798 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2799 | { |
2800 | int rc = 0; | |
2801 | COPY_REQ *pSMB = NULL; | |
2802 | COPY_RSP *pSMBr = NULL; | |
2803 | int bytes_returned; | |
2804 | int name_len, name_len2; | |
2805 | __u16 count; | |
2806 | ||
f96637be | 2807 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2808 | copyRetry: |
2809 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2810 | (void **) &pSMBr); | |
2811 | if (rc) | |
2812 | return rc; | |
2813 | ||
2814 | pSMB->BufferFormat = 0x04; | |
2815 | pSMB->Tid2 = target_tid; | |
2816 | ||
2817 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2818 | ||
2819 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2820 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2821 | fromName, PATH_MAX, nls_codepage, | |
2822 | remap); | |
1da177e4 LT |
2823 | name_len++; /* trailing null */ |
2824 | name_len *= 2; | |
2825 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2826 | /* protocol requires ASCII signature byte on Unicode string */ | |
2827 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2828 | name_len2 = |
acbbb76a SF |
2829 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2830 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2831 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2832 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2833 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2834 | name_len = strnlen(fromName, PATH_MAX); |
2835 | name_len++; /* trailing null */ | |
2836 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2837 | name_len2 = strnlen(toName, PATH_MAX); | |
2838 | name_len2++; /* trailing null */ | |
2839 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2840 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2841 | name_len2++; /* trailing null */ | |
2842 | name_len2++; /* signature byte */ | |
2843 | } | |
2844 | ||
2845 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2846 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2847 | pSMB->ByteCount = cpu_to_le16(count); |
2848 | ||
2849 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2850 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2851 | if (rc) { | |
f96637be JP |
2852 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2853 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2854 | } |
0d817bc0 | 2855 | cifs_buf_release(pSMB); |
1da177e4 LT |
2856 | |
2857 | if (rc == -EAGAIN) | |
2858 | goto copyRetry; | |
2859 | ||
2860 | return rc; | |
2861 | } | |
2862 | ||
2863 | int | |
6d5786a3 | 2864 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2865 | const char *fromName, const char *toName, |
bc8ebdc4 | 2866 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2867 | { |
2868 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2869 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2870 | char *data_offset; | |
2871 | int name_len; | |
2872 | int name_len_target; | |
2873 | int rc = 0; | |
2874 | int bytes_returned = 0; | |
2875 | __u16 params, param_offset, offset, byte_count; | |
2876 | ||
f96637be | 2877 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2878 | createSymLinkRetry: |
2879 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2880 | (void **) &pSMBr); | |
2881 | if (rc) | |
2882 | return rc; | |
2883 | ||
2884 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2885 | name_len = | |
bc8ebdc4 NA |
2886 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2887 | /* find define for this maxpathcomponent */ | |
2888 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2889 | name_len++; /* trailing null */ |
2890 | name_len *= 2; | |
2891 | ||
50c2f753 | 2892 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2893 | name_len = strnlen(fromName, PATH_MAX); |
2894 | name_len++; /* trailing null */ | |
2895 | strncpy(pSMB->FileName, fromName, name_len); | |
2896 | } | |
2897 | params = 6 + name_len; | |
2898 | pSMB->MaxSetupCount = 0; | |
2899 | pSMB->Reserved = 0; | |
2900 | pSMB->Flags = 0; | |
2901 | pSMB->Timeout = 0; | |
2902 | pSMB->Reserved2 = 0; | |
2903 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2904 | InformationLevel) - 4; |
1da177e4 LT |
2905 | offset = param_offset + params; |
2906 | ||
2907 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2908 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2909 | name_len_target = | |
bc8ebdc4 NA |
2910 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2911 | /* find define for this maxpathcomponent */ | |
2912 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2913 | name_len_target++; /* trailing null */ |
2914 | name_len_target *= 2; | |
50c2f753 | 2915 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2916 | name_len_target = strnlen(toName, PATH_MAX); |
2917 | name_len_target++; /* trailing null */ | |
2918 | strncpy(data_offset, toName, name_len_target); | |
2919 | } | |
2920 | ||
2921 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2922 | /* BB find exact max on data count below from sess */ | |
2923 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2924 | pSMB->SetupCount = 1; | |
2925 | pSMB->Reserved3 = 0; | |
2926 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2927 | byte_count = 3 /* pad */ + params + name_len_target; | |
2928 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2929 | pSMB->ParameterCount = cpu_to_le16(params); | |
2930 | pSMB->TotalDataCount = pSMB->DataCount; | |
2931 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2932 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2933 | pSMB->DataOffset = cpu_to_le16(offset); | |
2934 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2935 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2936 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2937 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2938 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2939 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2940 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2941 | if (rc) |
f96637be JP |
2942 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2943 | rc); | |
1da177e4 | 2944 | |
0d817bc0 | 2945 | cifs_buf_release(pSMB); |
1da177e4 LT |
2946 | |
2947 | if (rc == -EAGAIN) | |
2948 | goto createSymLinkRetry; | |
2949 | ||
2950 | return rc; | |
2951 | } | |
2952 | ||
2953 | int | |
6d5786a3 | 2954 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2955 | const char *fromName, const char *toName, |
737b758c | 2956 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2957 | { |
2958 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2959 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2960 | char *data_offset; | |
2961 | int name_len; | |
2962 | int name_len_target; | |
2963 | int rc = 0; | |
2964 | int bytes_returned = 0; | |
2965 | __u16 params, param_offset, offset, byte_count; | |
2966 | ||
f96637be | 2967 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2968 | createHardLinkRetry: |
2969 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2970 | (void **) &pSMBr); | |
2971 | if (rc) | |
2972 | return rc; | |
2973 | ||
2974 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2975 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2976 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2977 | name_len++; /* trailing null */ |
2978 | name_len *= 2; | |
2979 | ||
50c2f753 | 2980 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2981 | name_len = strnlen(toName, PATH_MAX); |
2982 | name_len++; /* trailing null */ | |
2983 | strncpy(pSMB->FileName, toName, name_len); | |
2984 | } | |
2985 | params = 6 + name_len; | |
2986 | pSMB->MaxSetupCount = 0; | |
2987 | pSMB->Reserved = 0; | |
2988 | pSMB->Flags = 0; | |
2989 | pSMB->Timeout = 0; | |
2990 | pSMB->Reserved2 = 0; | |
2991 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2992 | InformationLevel) - 4; |
1da177e4 LT |
2993 | offset = param_offset + params; |
2994 | ||
2995 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2996 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2997 | name_len_target = | |
acbbb76a SF |
2998 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2999 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3000 | name_len_target++; /* trailing null */ |
3001 | name_len_target *= 2; | |
50c2f753 | 3002 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3003 | name_len_target = strnlen(fromName, PATH_MAX); |
3004 | name_len_target++; /* trailing null */ | |
3005 | strncpy(data_offset, fromName, name_len_target); | |
3006 | } | |
3007 | ||
3008 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3009 | /* BB find exact max on data count below from sess*/ | |
3010 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3011 | pSMB->SetupCount = 1; | |
3012 | pSMB->Reserved3 = 0; | |
3013 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3014 | byte_count = 3 /* pad */ + params + name_len_target; | |
3015 | pSMB->ParameterCount = cpu_to_le16(params); | |
3016 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3017 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
3018 | pSMB->TotalDataCount = pSMB->DataCount; | |
3019 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3020 | pSMB->DataOffset = cpu_to_le16(offset); | |
3021 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
3022 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3023 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3024 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3025 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3026 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3027 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3028 | if (rc) |
f96637be JP |
3029 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
3030 | rc); | |
1da177e4 LT |
3031 | |
3032 | cifs_buf_release(pSMB); | |
3033 | if (rc == -EAGAIN) | |
3034 | goto createHardLinkRetry; | |
3035 | ||
3036 | return rc; | |
3037 | } | |
3038 | ||
3039 | int | |
6d5786a3 | 3040 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
3041 | const char *from_name, const char *to_name, |
3042 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
3043 | { |
3044 | int rc = 0; | |
3045 | NT_RENAME_REQ *pSMB = NULL; | |
3046 | RENAME_RSP *pSMBr = NULL; | |
3047 | int bytes_returned; | |
3048 | int name_len, name_len2; | |
3049 | __u16 count; | |
2baa2682 | 3050 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 3051 | |
f96637be | 3052 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
3053 | winCreateHardLinkRetry: |
3054 | ||
3055 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3056 | (void **) &pSMBr); | |
3057 | if (rc) | |
3058 | return rc; | |
3059 | ||
3060 | pSMB->SearchAttributes = | |
3061 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3062 | ATTR_DIRECTORY); | |
3063 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3064 | pSMB->ClusterCount = 0; | |
3065 | ||
3066 | pSMB->BufferFormat = 0x04; | |
3067 | ||
3068 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3069 | name_len = | |
d6e906f1 SF |
3070 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3071 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3072 | name_len++; /* trailing null */ |
3073 | name_len *= 2; | |
fcc7c09d JL |
3074 | |
3075 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3076 | pSMB->OldFileName[name_len] = 0x04; | |
3077 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3078 | name_len2 = |
acbbb76a | 3079 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3080 | to_name, PATH_MAX, cifs_sb->local_nls, |
3081 | remap); | |
1da177e4 LT |
3082 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3083 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 3084 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 3085 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 3086 | name_len++; /* trailing null */ |
d6e906f1 SF |
3087 | strncpy(pSMB->OldFileName, from_name, name_len); |
3088 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
3089 | name_len2++; /* trailing null */ |
3090 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 3091 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
3092 | name_len2++; /* trailing null */ |
3093 | name_len2++; /* signature byte */ | |
3094 | } | |
3095 | ||
3096 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3097 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3098 | pSMB->ByteCount = cpu_to_le16(count); |
3099 | ||
3100 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3101 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3102 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3103 | if (rc) |
f96637be | 3104 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3105 | |
1da177e4 LT |
3106 | cifs_buf_release(pSMB); |
3107 | if (rc == -EAGAIN) | |
3108 | goto winCreateHardLinkRetry; | |
3109 | ||
3110 | return rc; | |
3111 | } | |
3112 | ||
3113 | int | |
6d5786a3 | 3114 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3115 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3116 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3117 | { |
3118 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3119 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3120 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3121 | int rc = 0; | |
3122 | int bytes_returned; | |
3123 | int name_len; | |
3124 | __u16 params, byte_count; | |
460b9696 | 3125 | char *data_start; |
1da177e4 | 3126 | |
f96637be | 3127 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3128 | |
3129 | querySymLinkRetry: | |
3130 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3131 | (void **) &pSMBr); | |
3132 | if (rc) | |
3133 | return rc; | |
3134 | ||
3135 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3136 | name_len = | |
bc8ebdc4 NA |
3137 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3138 | searchName, PATH_MAX, nls_codepage, | |
3139 | remap); | |
1da177e4 LT |
3140 | name_len++; /* trailing null */ |
3141 | name_len *= 2; | |
50c2f753 | 3142 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3143 | name_len = strnlen(searchName, PATH_MAX); |
3144 | name_len++; /* trailing null */ | |
3145 | strncpy(pSMB->FileName, searchName, name_len); | |
3146 | } | |
3147 | ||
3148 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3149 | pSMB->TotalDataCount = 0; | |
3150 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3151 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3152 | pSMB->MaxSetupCount = 0; |
3153 | pSMB->Reserved = 0; | |
3154 | pSMB->Flags = 0; | |
3155 | pSMB->Timeout = 0; | |
3156 | pSMB->Reserved2 = 0; | |
3157 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3158 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3159 | pSMB->DataCount = 0; |
3160 | pSMB->DataOffset = 0; | |
3161 | pSMB->SetupCount = 1; | |
3162 | pSMB->Reserved3 = 0; | |
3163 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3164 | byte_count = params + 1 /* pad */ ; | |
3165 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3166 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3167 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3168 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3169 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3170 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3171 | ||
3172 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3173 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3174 | if (rc) { | |
f96637be | 3175 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3176 | } else { |
3177 | /* decode response */ | |
3178 | ||
3179 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3180 | /* BB also check enough total bytes returned */ |
820a803f | 3181 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3182 | rc = -EIO; |
1da177e4 | 3183 | else { |
0e0d2cf3 | 3184 | bool is_unicode; |
460b9696 JL |
3185 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3186 | ||
3187 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3188 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3189 | |
0e0d2cf3 SF |
3190 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3191 | is_unicode = true; | |
3192 | else | |
3193 | is_unicode = false; | |
3194 | ||
737b758c | 3195 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3196 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3197 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3198 | if (!*symlinkinfo) |
460b9696 | 3199 | rc = -ENOMEM; |
1da177e4 LT |
3200 | } |
3201 | } | |
3202 | cifs_buf_release(pSMB); | |
3203 | if (rc == -EAGAIN) | |
3204 | goto querySymLinkRetry; | |
3205 | return rc; | |
3206 | } | |
3207 | ||
c52a9554 SF |
3208 | /* |
3209 | * Recent Windows versions now create symlinks more frequently | |
3210 | * and they use the "reparse point" mechanism below. We can of course | |
3211 | * do symlinks nicely to Samba and other servers which support the | |
3212 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3213 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3214 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3215 | * In the interim this code has been moved to its own config option so | |
3216 | * it is not compiled in by default until callers fixed up and more tested. | |
3217 | */ | |
1da177e4 | 3218 | int |
d244bf2d PS |
3219 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3220 | __u16 fid, char **symlinkinfo, | |
3221 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3222 | { |
3223 | int rc = 0; | |
3224 | int bytes_returned; | |
50c2f753 SF |
3225 | struct smb_com_transaction_ioctl_req *pSMB; |
3226 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3227 | bool is_unicode; |
3228 | unsigned int sub_len; | |
3229 | char *sub_start; | |
c31f3307 SF |
3230 | struct reparse_symlink_data *reparse_buf; |
3231 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3232 | __u32 data_offset, data_count; |
3233 | char *end_of_smb; | |
3234 | ||
3235 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3236 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3237 | (void **) &pSMBr); | |
3238 | if (rc) | |
3239 | return rc; | |
3240 | ||
3241 | pSMB->TotalParameterCount = 0 ; | |
3242 | pSMB->TotalDataCount = 0; | |
3243 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3244 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3245 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3246 | pSMB->MaxSetupCount = 4; |
3247 | pSMB->Reserved = 0; | |
3248 | pSMB->ParameterOffset = 0; | |
3249 | pSMB->DataCount = 0; | |
3250 | pSMB->DataOffset = 0; | |
3251 | pSMB->SetupCount = 4; | |
3252 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3253 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3254 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3255 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3256 | pSMB->IsRootFlag = 0; | |
3257 | pSMB->Fid = fid; /* file handle always le */ | |
3258 | pSMB->ByteCount = 0; | |
3259 | ||
3260 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3261 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3262 | if (rc) { | |
f96637be | 3263 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3264 | goto qreparse_out; |
3265 | } | |
3266 | ||
3267 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3268 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3269 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3270 | /* BB also check enough total bytes returned */ | |
3271 | rc = -EIO; /* bad smb */ | |
3272 | goto qreparse_out; | |
3273 | } | |
3274 | if (!data_count || (data_count > 2048)) { | |
3275 | rc = -EIO; | |
3276 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3277 | goto qreparse_out; | |
3278 | } | |
3279 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3280 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3281 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3282 | if ((char *)reparse_buf >= end_of_smb) { | |
3283 | rc = -EIO; | |
3284 | goto qreparse_out; | |
1da177e4 | 3285 | } |
c31f3307 SF |
3286 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3287 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3288 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3289 | ||
3290 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3291 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3292 | le64_to_cpu(posix_buf->InodeType)); | |
3293 | rc = -EOPNOTSUPP; | |
3294 | goto qreparse_out; | |
3295 | } | |
3296 | is_unicode = true; | |
3297 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3298 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3299 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3300 | rc = -EIO; | |
3301 | goto qreparse_out; | |
3302 | } | |
3303 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3304 | sub_len, is_unicode, nls_codepage); | |
3305 | goto qreparse_out; | |
3306 | } else if (reparse_buf->ReparseTag != | |
3307 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3308 | rc = -EOPNOTSUPP; | |
3309 | goto qreparse_out; | |
3310 | } | |
3311 | ||
3312 | /* Reparse tag is NTFS symlink */ | |
3313 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3314 | reparse_buf->PathBuffer; | |
3315 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3316 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3317 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3318 | rc = -EIO; | |
3319 | goto qreparse_out; | |
3320 | } | |
d244bf2d PS |
3321 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3322 | is_unicode = true; | |
3323 | else | |
3324 | is_unicode = false; | |
989c7e51 | 3325 | |
d244bf2d PS |
3326 | /* BB FIXME investigate remapping reserved chars here */ |
3327 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3328 | nls_codepage); | |
3329 | if (!*symlinkinfo) | |
3330 | rc = -ENOMEM; | |
1da177e4 | 3331 | qreparse_out: |
4a6d87f1 | 3332 | cifs_buf_release(pSMB); |
1da177e4 | 3333 | |
d244bf2d PS |
3334 | /* |
3335 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3336 | * since file handle passed in no longer valid. | |
3337 | */ | |
1da177e4 LT |
3338 | return rc; |
3339 | } | |
3340 | ||
c7f508a9 SF |
3341 | int |
3342 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3343 | __u16 fid) | |
3344 | { | |
3345 | int rc = 0; | |
3346 | int bytes_returned; | |
3347 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3348 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3349 | ||
3350 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3351 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3352 | (void **) &pSMBr); | |
3353 | if (rc) | |
3354 | return rc; | |
3355 | ||
3356 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3357 | ||
3358 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3359 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3360 | pSMB->MaxParameterCount = 0; |
3361 | pSMB->MaxDataCount = 0; | |
3362 | pSMB->MaxSetupCount = 4; | |
3363 | pSMB->Reserved = 0; | |
3364 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3365 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3366 | pSMB->DataOffset = |
3367 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3368 | compression_state) - 4); /* 84 */ | |
3369 | pSMB->SetupCount = 4; | |
bc09d141 | 3370 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3371 | pSMB->ParameterCount = 0; |
bc09d141 | 3372 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3373 | pSMB->IsFsctl = 1; /* FSCTL */ |
3374 | pSMB->IsRootFlag = 0; | |
3375 | pSMB->Fid = fid; /* file handle always le */ | |
3376 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3377 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3378 | inc_rfc1001_len(pSMB, 5); |
3379 | ||
3380 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3381 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3382 | if (rc) | |
3383 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3384 | ||
3385 | cifs_buf_release(pSMB); | |
3386 | ||
3387 | /* | |
3388 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3389 | * since file handle passed in no longer valid. | |
3390 | */ | |
3391 | return rc; | |
3392 | } | |
3393 | ||
3394 | ||
1da177e4 LT |
3395 | #ifdef CONFIG_CIFS_POSIX |
3396 | ||
3397 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3398 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3399 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3400 | { |
3401 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3402 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3403 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3404 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3405 | /* |
3406 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3407 | ace->e_perm, ace->e_tag, ace->e_id); | |
3408 | */ | |
1da177e4 LT |
3409 | |
3410 | return; | |
3411 | } | |
3412 | ||
3413 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3414 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3415 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3416 | { |
3417 | int size = 0; | |
3418 | int i; | |
3419 | __u16 count; | |
50c2f753 SF |
3420 | struct cifs_posix_ace *pACE; |
3421 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3422 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3423 | |
3424 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3425 | return -EOPNOTSUPP; | |
3426 | ||
45987e00 | 3427 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3428 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3429 | pACE = &cifs_acl->ace_array[0]; | |
3430 | size = sizeof(struct cifs_posix_acl); | |
3431 | size += sizeof(struct cifs_posix_ace) * count; | |
3432 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3433 | if (size_of_data_area < size) { |
f96637be JP |
3434 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3435 | size_of_data_area, size); | |
1da177e4 LT |
3436 | return -EINVAL; |
3437 | } | |
45987e00 | 3438 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3439 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3440 | size = sizeof(struct cifs_posix_acl); | |
3441 | size += sizeof(struct cifs_posix_ace) * count; | |
3442 | /* skip past access ACEs to get to default ACEs */ | |
3443 | pACE = &cifs_acl->ace_array[count]; | |
3444 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3445 | size += sizeof(struct cifs_posix_ace) * count; | |
3446 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3447 | if (size_of_data_area < size) |
1da177e4 LT |
3448 | return -EINVAL; |
3449 | } else { | |
3450 | /* illegal type */ | |
3451 | return -EINVAL; | |
3452 | } | |
3453 | ||
3454 | size = posix_acl_xattr_size(count); | |
790fe579 | 3455 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3456 | /* used to query ACL EA size */ |
790fe579 | 3457 | } else if (size > buflen) { |
1da177e4 LT |
3458 | return -ERANGE; |
3459 | } else /* buffer big enough */ { | |
2211d5ba AG |
3460 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3461 | ||
ff7feac9 | 3462 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3463 | for (i = 0; i < count ; i++) { |
2211d5ba | 3464 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3465 | pACE++; |
1da177e4 LT |
3466 | } |
3467 | } | |
3468 | return size; | |
3469 | } | |
3470 | ||
50c2f753 | 3471 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3472 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 LT |
3473 | { |
3474 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3475 | ||
ff7feac9 SF |
3476 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3477 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3478 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3479 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3480 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3481 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3482 | } else |
ff7feac9 | 3483 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3484 | /* |
3485 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3486 | ace->e_perm, ace->e_tag, ace->e_id); | |
3487 | */ | |
1da177e4 LT |
3488 | return rc; |
3489 | } | |
3490 | ||
3491 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3492 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3493 | const int buflen, const int acl_type) | |
1da177e4 LT |
3494 | { |
3495 | __u16 rc = 0; | |
50c2f753 | 3496 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3497 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3498 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3499 | int count; |
3500 | int i; | |
3501 | ||
790fe579 | 3502 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3503 | return 0; |
3504 | ||
3505 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3506 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3507 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3508 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3509 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3510 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3511 | return 0; |
3512 | } | |
3513 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3514 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3515 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3516 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3517 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3518 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3519 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3520 | } else { |
f96637be | 3521 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3522 | return 0; |
3523 | } | |
50c2f753 | 3524 | for (i = 0; i < count; i++) { |
ae9ebe7c | 3525 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); |
790fe579 | 3526 | if (rc != 0) { |
1da177e4 LT |
3527 | /* ACE not converted */ |
3528 | break; | |
3529 | } | |
3530 | } | |
790fe579 | 3531 | if (rc == 0) { |
1da177e4 LT |
3532 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3533 | rc += sizeof(struct cifs_posix_acl); | |
3534 | /* BB add check to make sure ACL does not overflow SMB */ | |
3535 | } | |
3536 | return rc; | |
3537 | } | |
3538 | ||
3539 | int | |
6d5786a3 | 3540 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3541 | const unsigned char *searchName, |
3542 | char *acl_inf, const int buflen, const int acl_type, | |
3543 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3544 | { |
3545 | /* SMB_QUERY_POSIX_ACL */ | |
3546 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3547 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3548 | int rc = 0; | |
3549 | int bytes_returned; | |
3550 | int name_len; | |
3551 | __u16 params, byte_count; | |
50c2f753 | 3552 | |
f96637be | 3553 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3554 | |
3555 | queryAclRetry: | |
3556 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3557 | (void **) &pSMBr); | |
3558 | if (rc) | |
3559 | return rc; | |
50c2f753 | 3560 | |
1da177e4 LT |
3561 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3562 | name_len = | |
acbbb76a SF |
3563 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3564 | searchName, PATH_MAX, nls_codepage, | |
3565 | remap); | |
1da177e4 LT |
3566 | name_len++; /* trailing null */ |
3567 | name_len *= 2; | |
3568 | pSMB->FileName[name_len] = 0; | |
3569 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3570 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3571 | name_len = strnlen(searchName, PATH_MAX); |
3572 | name_len++; /* trailing null */ | |
3573 | strncpy(pSMB->FileName, searchName, name_len); | |
3574 | } | |
3575 | ||
3576 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3577 | pSMB->TotalDataCount = 0; | |
3578 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3579 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3580 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3581 | pSMB->MaxSetupCount = 0; | |
3582 | pSMB->Reserved = 0; | |
3583 | pSMB->Flags = 0; | |
3584 | pSMB->Timeout = 0; | |
3585 | pSMB->Reserved2 = 0; | |
3586 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3587 | offsetof(struct smb_com_transaction2_qpi_req, |
3588 | InformationLevel) - 4); | |
1da177e4 LT |
3589 | pSMB->DataCount = 0; |
3590 | pSMB->DataOffset = 0; | |
3591 | pSMB->SetupCount = 1; | |
3592 | pSMB->Reserved3 = 0; | |
3593 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3594 | byte_count = params + 1 /* pad */ ; | |
3595 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3596 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3597 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3598 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3599 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3600 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3601 | ||
3602 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3603 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3604 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3605 | if (rc) { |
f96637be | 3606 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3607 | } else { |
3608 | /* decode response */ | |
50c2f753 | 3609 | |
1da177e4 | 3610 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3611 | /* BB also check enough total bytes returned */ |
820a803f | 3612 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3613 | rc = -EIO; /* bad smb */ |
3614 | else { | |
3615 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3616 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3617 | rc = cifs_copy_posix_acl(acl_inf, | |
3618 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3619 | buflen, acl_type, count); |
1da177e4 LT |
3620 | } |
3621 | } | |
3622 | cifs_buf_release(pSMB); | |
3623 | if (rc == -EAGAIN) | |
3624 | goto queryAclRetry; | |
3625 | return rc; | |
3626 | } | |
3627 | ||
3628 | int | |
6d5786a3 | 3629 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3630 | const unsigned char *fileName, |
3631 | const char *local_acl, const int buflen, | |
3632 | const int acl_type, | |
3633 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3634 | { |
3635 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3636 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3637 | char *parm_data; | |
3638 | int name_len; | |
3639 | int rc = 0; | |
3640 | int bytes_returned = 0; | |
3641 | __u16 params, byte_count, data_count, param_offset, offset; | |
3642 | ||
f96637be | 3643 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3644 | setAclRetry: |
3645 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3646 | (void **) &pSMBr); |
1da177e4 LT |
3647 | if (rc) |
3648 | return rc; | |
3649 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3650 | name_len = | |
acbbb76a SF |
3651 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3652 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3653 | name_len++; /* trailing null */ |
3654 | name_len *= 2; | |
50c2f753 | 3655 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3656 | name_len = strnlen(fileName, PATH_MAX); |
3657 | name_len++; /* trailing null */ | |
3658 | strncpy(pSMB->FileName, fileName, name_len); | |
3659 | } | |
3660 | params = 6 + name_len; | |
3661 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3662 | /* BB find max SMB size from sess */ |
3663 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3664 | pSMB->MaxSetupCount = 0; |
3665 | pSMB->Reserved = 0; | |
3666 | pSMB->Flags = 0; | |
3667 | pSMB->Timeout = 0; | |
3668 | pSMB->Reserved2 = 0; | |
3669 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3670 | InformationLevel) - 4; |
1da177e4 LT |
3671 | offset = param_offset + params; |
3672 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3673 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3674 | ||
3675 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3676 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3677 | |
790fe579 | 3678 | if (data_count == 0) { |
1da177e4 LT |
3679 | rc = -EOPNOTSUPP; |
3680 | goto setACLerrorExit; | |
3681 | } | |
3682 | pSMB->DataOffset = cpu_to_le16(offset); | |
3683 | pSMB->SetupCount = 1; | |
3684 | pSMB->Reserved3 = 0; | |
3685 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3686 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3687 | byte_count = 3 /* pad */ + params + data_count; | |
3688 | pSMB->DataCount = cpu_to_le16(data_count); | |
3689 | pSMB->TotalDataCount = pSMB->DataCount; | |
3690 | pSMB->ParameterCount = cpu_to_le16(params); | |
3691 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3692 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3693 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3694 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3695 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3696 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3697 | if (rc) |
f96637be | 3698 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3699 | |
3700 | setACLerrorExit: | |
3701 | cifs_buf_release(pSMB); | |
3702 | if (rc == -EAGAIN) | |
3703 | goto setAclRetry; | |
3704 | return rc; | |
3705 | } | |
3706 | ||
f654bac2 SF |
3707 | /* BB fix tabs in this function FIXME BB */ |
3708 | int | |
6d5786a3 | 3709 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3710 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3711 | { |
50c2f753 SF |
3712 | int rc = 0; |
3713 | struct smb_t2_qfi_req *pSMB = NULL; | |
3714 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3715 | int bytes_returned; | |
3716 | __u16 params, byte_count; | |
f654bac2 | 3717 | |
f96637be | 3718 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3719 | if (tcon == NULL) |
3720 | return -ENODEV; | |
f654bac2 SF |
3721 | |
3722 | GetExtAttrRetry: | |
790fe579 SF |
3723 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3724 | (void **) &pSMBr); | |
3725 | if (rc) | |
3726 | return rc; | |
f654bac2 | 3727 | |
ad7a2926 | 3728 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3729 | pSMB->t2.TotalDataCount = 0; |
3730 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3731 | /* BB find exact max data count below from sess structure BB */ | |
3732 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3733 | pSMB->t2.MaxSetupCount = 0; | |
3734 | pSMB->t2.Reserved = 0; | |
3735 | pSMB->t2.Flags = 0; | |
3736 | pSMB->t2.Timeout = 0; | |
3737 | pSMB->t2.Reserved2 = 0; | |
3738 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3739 | Fid) - 4); | |
3740 | pSMB->t2.DataCount = 0; | |
3741 | pSMB->t2.DataOffset = 0; | |
3742 | pSMB->t2.SetupCount = 1; | |
3743 | pSMB->t2.Reserved3 = 0; | |
3744 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3745 | byte_count = params + 1 /* pad */ ; | |
3746 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3747 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3748 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3749 | pSMB->Pad = 0; | |
f654bac2 | 3750 | pSMB->Fid = netfid; |
be8e3b00 | 3751 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3752 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3753 | ||
3754 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3755 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3756 | if (rc) { | |
f96637be | 3757 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3758 | } else { |
3759 | /* decode response */ | |
3760 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3761 | /* BB also check enough total bytes returned */ |
820a803f | 3762 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3763 | /* If rc should we check for EOPNOSUPP and |
3764 | disable the srvino flag? or in caller? */ | |
3765 | rc = -EIO; /* bad smb */ | |
3766 | else { | |
3767 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3768 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3769 | struct file_chattr_info *pfinfo; | |
3770 | /* BB Do we need a cast or hash here ? */ | |
3771 | if (count != 16) { | |
f96637be | 3772 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3773 | rc = -EIO; |
3774 | goto GetExtAttrOut; | |
3775 | } | |
3776 | pfinfo = (struct file_chattr_info *) | |
3777 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3778 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3779 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3780 | } |
3781 | } | |
f654bac2 | 3782 | GetExtAttrOut: |
790fe579 SF |
3783 | cifs_buf_release(pSMB); |
3784 | if (rc == -EAGAIN) | |
3785 | goto GetExtAttrRetry; | |
3786 | return rc; | |
f654bac2 SF |
3787 | } |
3788 | ||
f654bac2 | 3789 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3790 | |
79df1bae JL |
3791 | #ifdef CONFIG_CIFS_ACL |
3792 | /* | |
3793 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3794 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3795 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3796 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3797 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3798 | * by caller | |
3799 | */ | |
3800 | static int | |
3801 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3802 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3803 | void **ret_buf) |
3804 | { | |
3805 | int rc; | |
3806 | __u32 temp_offset; | |
3807 | struct smb_com_ntransact_req *pSMB; | |
3808 | ||
3809 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3810 | (void **)&pSMB); | |
3811 | if (rc) | |
3812 | return rc; | |
3813 | *ret_buf = (void *)pSMB; | |
3814 | pSMB->Reserved = 0; | |
3815 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3816 | pSMB->TotalDataCount = 0; | |
c974befa | 3817 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3818 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3819 | pSMB->DataCount = pSMB->TotalDataCount; | |
3820 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3821 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3822 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3823 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3824 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3825 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3826 | return 0; | |
3827 | } | |
3828 | ||
3829 | static int | |
3830 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3831 | __u32 *pparmlen, __u32 *pdatalen) | |
3832 | { | |
3833 | char *end_of_smb; | |
3834 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3835 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3836 | u16 bcc; |
79df1bae JL |
3837 | |
3838 | *pdatalen = 0; | |
3839 | *pparmlen = 0; | |
3840 | ||
3841 | if (buf == NULL) | |
3842 | return -EINVAL; | |
3843 | ||
3844 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3845 | ||
820a803f JL |
3846 | bcc = get_bcc(&pSMBr->hdr); |
3847 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3848 | (char *)&pSMBr->ByteCount; |
3849 | ||
3850 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3851 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3852 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3853 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3854 | ||
3855 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3856 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3857 | ||
3858 | /* should we also check that parm and data areas do not overlap? */ | |
3859 | if (*ppparm > end_of_smb) { | |
f96637be | 3860 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3861 | return -EINVAL; |
3862 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3863 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3864 | return -EINVAL; |
3865 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3866 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3867 | return -EINVAL; |
3868 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3869 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3870 | *ppdata, data_count, (data_count + *ppdata), | |
3871 | end_of_smb, pSMBr); | |
79df1bae | 3872 | return -EINVAL; |
820a803f | 3873 | } else if (parm_count + data_count > bcc) { |
f96637be | 3874 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3875 | return -EINVAL; |
3876 | } | |
3877 | *pdatalen = data_count; | |
3878 | *pparmlen = parm_count; | |
3879 | return 0; | |
3880 | } | |
3881 | ||
0a4b92c0 SF |
3882 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3883 | int | |
6d5786a3 | 3884 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3885 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3886 | { |
3887 | int rc = 0; | |
3888 | int buf_type = 0; | |
ad7a2926 | 3889 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3890 | struct kvec iov[1]; |
da502f7d | 3891 | struct kvec rsp_iov; |
0a4b92c0 | 3892 | |
f96637be | 3893 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3894 | |
630f3f0c SF |
3895 | *pbuflen = 0; |
3896 | *acl_inf = NULL; | |
3897 | ||
b9c7a2bb | 3898 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3899 | 8 /* parm len */, tcon, (void **) &pSMB); |
3900 | if (rc) | |
3901 | return rc; | |
3902 | ||
3903 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3904 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3905 | pSMB->MaxSetupCount = 0; | |
3906 | pSMB->Fid = fid; /* file handle always le */ | |
3907 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3908 | CIFS_ACL_DACL); | |
3909 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3910 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3911 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3912 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3913 | |
a761ac57 | 3914 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3915 | 0, &rsp_iov); |
3916 | cifs_small_buf_release(pSMB); | |
44c58186 | 3917 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3918 | if (rc) { |
f96637be | 3919 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3920 | } else { /* decode response */ |
ad7a2926 | 3921 | __le32 *parm; |
630f3f0c SF |
3922 | __u32 parm_len; |
3923 | __u32 acl_len; | |
50c2f753 | 3924 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3925 | char *pdata; |
0a4b92c0 SF |
3926 | |
3927 | /* validate_nttransact */ | |
da502f7d | 3928 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3929 | &pdata, &parm_len, pbuflen); |
790fe579 | 3930 | if (rc) |
0a4b92c0 | 3931 | goto qsec_out; |
da502f7d | 3932 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3933 | |
f96637be JP |
3934 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3935 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3936 | |
3937 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3938 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3939 | *pbuflen = 0; |
0a4b92c0 SF |
3940 | goto qsec_out; |
3941 | } | |
3942 | ||
3943 | /* BB check that data area is minimum length and as big as acl_len */ | |
3944 | ||
af6f4612 | 3945 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3946 | if (acl_len != *pbuflen) { |
f96637be JP |
3947 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3948 | acl_len, *pbuflen); | |
630f3f0c SF |
3949 | if (*pbuflen > acl_len) |
3950 | *pbuflen = acl_len; | |
3951 | } | |
0a4b92c0 | 3952 | |
630f3f0c SF |
3953 | /* check if buffer is big enough for the acl |
3954 | header followed by the smallest SID */ | |
3955 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3956 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3957 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3958 | rc = -EINVAL; |
3959 | *pbuflen = 0; | |
3960 | } else { | |
f7f7c185 | 3961 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3962 | if (*acl_inf == NULL) { |
3963 | *pbuflen = 0; | |
3964 | rc = -ENOMEM; | |
3965 | } | |
630f3f0c | 3966 | } |
0a4b92c0 SF |
3967 | } |
3968 | qsec_out: | |
da502f7d | 3969 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3970 | return rc; |
3971 | } | |
97837582 SF |
3972 | |
3973 | int | |
6d5786a3 | 3974 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3975 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3976 | { |
3977 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3978 | int rc = 0; | |
3979 | int bytes_returned = 0; | |
3980 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3981 | void *pSMBr; |
97837582 SF |
3982 | |
3983 | setCifsAclRetry: | |
b2a3ad9c | 3984 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3985 | if (rc) |
b2a3ad9c | 3986 | return rc; |
97837582 SF |
3987 | |
3988 | pSMB->MaxSetupCount = 0; | |
3989 | pSMB->Reserved = 0; | |
3990 | ||
3991 | param_count = 8; | |
3992 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3993 | data_count = acllen; | |
3994 | data_offset = param_offset + param_count; | |
3995 | byte_count = 3 /* pad */ + param_count; | |
3996 | ||
3997 | pSMB->DataCount = cpu_to_le32(data_count); | |
3998 | pSMB->TotalDataCount = pSMB->DataCount; | |
3999 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
4000 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
4001 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
4002 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
4003 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4004 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
4005 | pSMB->SetupCount = 0; | |
4006 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
4007 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
4008 | ||
4009 | pSMB->Fid = fid; /* file handle always le */ | |
4010 | pSMB->Reserved2 = 0; | |
a5ff3769 | 4011 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
4012 | |
4013 | if (pntsd && acllen) { | |
b2a3ad9c JL |
4014 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
4015 | data_offset, pntsd, acllen); | |
be8e3b00 | 4016 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 4017 | } else |
be8e3b00 | 4018 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
4019 | |
4020 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4021 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4022 | ||
f96637be JP |
4023 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
4024 | bytes_returned, rc); | |
97837582 | 4025 | if (rc) |
f96637be | 4026 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
4027 | cifs_buf_release(pSMB); |
4028 | ||
4029 | if (rc == -EAGAIN) | |
4030 | goto setCifsAclRetry; | |
4031 | ||
4032 | return (rc); | |
4033 | } | |
4034 | ||
79df1bae | 4035 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 4036 | |
6b8edfe0 SF |
4037 | /* Legacy Query Path Information call for lookup to old servers such |
4038 | as Win9x/WinME */ | |
68889f26 PS |
4039 | int |
4040 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
4041 | const char *search_name, FILE_ALL_INFO *data, | |
4042 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 4043 | { |
ad7a2926 SF |
4044 | QUERY_INFORMATION_REQ *pSMB; |
4045 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
4046 | int rc = 0; |
4047 | int bytes_returned; | |
4048 | int name_len; | |
4049 | ||
f96637be | 4050 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
4051 | QInfRetry: |
4052 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 4053 | (void **) &pSMBr); |
6b8edfe0 SF |
4054 | if (rc) |
4055 | return rc; | |
4056 | ||
4057 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4058 | name_len = | |
acbbb76a | 4059 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 4060 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4061 | remap); |
6b8edfe0 SF |
4062 | name_len++; /* trailing null */ |
4063 | name_len *= 2; | |
50c2f753 | 4064 | } else { |
68889f26 | 4065 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 4066 | name_len++; /* trailing null */ |
68889f26 | 4067 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
4068 | } |
4069 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4070 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4071 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4072 | pSMB->ByteCount = cpu_to_le16(name_len); |
4073 | ||
4074 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4075 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4076 | if (rc) { |
f96637be | 4077 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4078 | } else if (data) { |
1bd5bbcb SF |
4079 | struct timespec ts; |
4080 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
4081 | |
4082 | /* decode response */ | |
1bd5bbcb | 4083 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4084 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4085 | ts.tv_nsec = 0; |
4086 | ts.tv_sec = time; | |
4087 | /* decode time fields */ | |
68889f26 PS |
4088 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4089 | data->LastWriteTime = data->ChangeTime; | |
4090 | data->LastAccessTime = 0; | |
4091 | data->AllocationSize = | |
70ca734a | 4092 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4093 | data->EndOfFile = data->AllocationSize; |
4094 | data->Attributes = | |
70ca734a | 4095 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4096 | } else |
4097 | rc = -EIO; /* bad buffer passed in */ | |
4098 | ||
4099 | cifs_buf_release(pSMB); | |
4100 | ||
4101 | if (rc == -EAGAIN) | |
4102 | goto QInfRetry; | |
4103 | ||
4104 | return rc; | |
4105 | } | |
4106 | ||
bcd5357f | 4107 | int |
6d5786a3 | 4108 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4109 | u16 netfid, FILE_ALL_INFO *pFindData) |
4110 | { | |
4111 | struct smb_t2_qfi_req *pSMB = NULL; | |
4112 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4113 | int rc = 0; | |
4114 | int bytes_returned; | |
4115 | __u16 params, byte_count; | |
4116 | ||
4117 | QFileInfoRetry: | |
4118 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4119 | (void **) &pSMBr); | |
4120 | if (rc) | |
4121 | return rc; | |
4122 | ||
4123 | params = 2 /* level */ + 2 /* fid */; | |
4124 | pSMB->t2.TotalDataCount = 0; | |
4125 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4126 | /* BB find exact max data count below from sess structure BB */ | |
4127 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4128 | pSMB->t2.MaxSetupCount = 0; | |
4129 | pSMB->t2.Reserved = 0; | |
4130 | pSMB->t2.Flags = 0; | |
4131 | pSMB->t2.Timeout = 0; | |
4132 | pSMB->t2.Reserved2 = 0; | |
4133 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4134 | Fid) - 4); | |
4135 | pSMB->t2.DataCount = 0; | |
4136 | pSMB->t2.DataOffset = 0; | |
4137 | pSMB->t2.SetupCount = 1; | |
4138 | pSMB->t2.Reserved3 = 0; | |
4139 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4140 | byte_count = params + 1 /* pad */ ; | |
4141 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4142 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4143 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4144 | pSMB->Pad = 0; | |
4145 | pSMB->Fid = netfid; | |
be8e3b00 | 4146 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4147 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4148 | |
bcd5357f JL |
4149 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4150 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4151 | if (rc) { | |
ebcc943c | 4152 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4153 | } else { /* decode response */ |
4154 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4155 | |
bcd5357f JL |
4156 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4157 | rc = -EIO; | |
820a803f | 4158 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4159 | rc = -EIO; /* bad smb */ |
4160 | else if (pFindData) { | |
4161 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4162 | memcpy((char *) pFindData, | |
4163 | (char *) &pSMBr->hdr.Protocol + | |
4164 | data_offset, sizeof(FILE_ALL_INFO)); | |
4165 | } else | |
4166 | rc = -ENOMEM; | |
4167 | } | |
4168 | cifs_buf_release(pSMB); | |
4169 | if (rc == -EAGAIN) | |
4170 | goto QFileInfoRetry; | |
6b8edfe0 | 4171 | |
bcd5357f JL |
4172 | return rc; |
4173 | } | |
6b8edfe0 | 4174 | |
1da177e4 | 4175 | int |
6d5786a3 | 4176 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4177 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4178 | int legacy /* old style infolevel */, |
737b758c | 4179 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4180 | { |
68889f26 | 4181 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4182 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4183 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4184 | int rc = 0; | |
4185 | int bytes_returned; | |
4186 | int name_len; | |
4187 | __u16 params, byte_count; | |
4188 | ||
f96637be | 4189 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4190 | QPathInfoRetry: |
4191 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4192 | (void **) &pSMBr); | |
4193 | if (rc) | |
4194 | return rc; | |
4195 | ||
4196 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4197 | name_len = | |
68889f26 | 4198 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4199 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4200 | name_len++; /* trailing null */ |
4201 | name_len *= 2; | |
50c2f753 | 4202 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4203 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4204 | name_len++; /* trailing null */ |
68889f26 | 4205 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4206 | } |
4207 | ||
50c2f753 | 4208 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4209 | pSMB->TotalDataCount = 0; |
4210 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4211 | /* BB find exact max SMB PDU from sess structure BB */ |
4212 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4213 | pSMB->MaxSetupCount = 0; |
4214 | pSMB->Reserved = 0; | |
4215 | pSMB->Flags = 0; | |
4216 | pSMB->Timeout = 0; | |
4217 | pSMB->Reserved2 = 0; | |
4218 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4219 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4220 | pSMB->DataCount = 0; |
4221 | pSMB->DataOffset = 0; | |
4222 | pSMB->SetupCount = 1; | |
4223 | pSMB->Reserved3 = 0; | |
4224 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4225 | byte_count = params + 1 /* pad */ ; | |
4226 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4227 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4228 | if (legacy) |
acf1a1b1 SF |
4229 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4230 | else | |
4231 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4232 | pSMB->Reserved4 = 0; |
be8e3b00 | 4233 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4234 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4235 | ||
4236 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4237 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4238 | if (rc) { | |
f96637be | 4239 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4240 | } else { /* decode response */ |
4241 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4242 | ||
acf1a1b1 SF |
4243 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4244 | rc = -EIO; | |
820a803f | 4245 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4246 | rc = -EIO; /* bad smb */ |
820a803f | 4247 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4248 | rc = -EIO; /* 24 or 26 expected but we do not read |
4249 | last field */ | |
68889f26 | 4250 | else if (data) { |
acf1a1b1 | 4251 | int size; |
1da177e4 | 4252 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4253 | |
68889f26 PS |
4254 | /* |
4255 | * On legacy responses we do not read the last field, | |
4256 | * EAsize, fortunately since it varies by subdialect and | |
4257 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4258 | * bytes depending but we don't care here. | |
4259 | */ | |
ad7a2926 | 4260 | if (legacy) |
acf1a1b1 SF |
4261 | size = sizeof(FILE_INFO_STANDARD); |
4262 | else | |
4263 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4264 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4265 | data_offset, size); |
1da177e4 LT |
4266 | } else |
4267 | rc = -ENOMEM; | |
4268 | } | |
4269 | cifs_buf_release(pSMB); | |
4270 | if (rc == -EAGAIN) | |
4271 | goto QPathInfoRetry; | |
4272 | ||
4273 | return rc; | |
4274 | } | |
4275 | ||
c8634fd3 | 4276 | int |
6d5786a3 | 4277 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4278 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4279 | { | |
4280 | struct smb_t2_qfi_req *pSMB = NULL; | |
4281 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4282 | int rc = 0; | |
4283 | int bytes_returned; | |
4284 | __u16 params, byte_count; | |
4285 | ||
4286 | UnixQFileInfoRetry: | |
4287 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4288 | (void **) &pSMBr); | |
4289 | if (rc) | |
4290 | return rc; | |
4291 | ||
4292 | params = 2 /* level */ + 2 /* fid */; | |
4293 | pSMB->t2.TotalDataCount = 0; | |
4294 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4295 | /* BB find exact max data count below from sess structure BB */ | |
4296 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4297 | pSMB->t2.MaxSetupCount = 0; | |
4298 | pSMB->t2.Reserved = 0; | |
4299 | pSMB->t2.Flags = 0; | |
4300 | pSMB->t2.Timeout = 0; | |
4301 | pSMB->t2.Reserved2 = 0; | |
4302 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4303 | Fid) - 4); | |
4304 | pSMB->t2.DataCount = 0; | |
4305 | pSMB->t2.DataOffset = 0; | |
4306 | pSMB->t2.SetupCount = 1; | |
4307 | pSMB->t2.Reserved3 = 0; | |
4308 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4309 | byte_count = params + 1 /* pad */ ; | |
4310 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4311 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4312 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4313 | pSMB->Pad = 0; | |
4314 | pSMB->Fid = netfid; | |
be8e3b00 | 4315 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4316 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4317 | |
4318 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4319 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4320 | if (rc) { | |
ebcc943c | 4321 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4322 | } else { /* decode response */ |
4323 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4324 | ||
820a803f | 4325 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4326 | 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 |
4327 | rc = -EIO; /* bad smb */ |
4328 | } else { | |
4329 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4330 | memcpy((char *) pFindData, | |
4331 | (char *) &pSMBr->hdr.Protocol + | |
4332 | data_offset, | |
4333 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4334 | } | |
4335 | } | |
4336 | ||
4337 | cifs_buf_release(pSMB); | |
4338 | if (rc == -EAGAIN) | |
4339 | goto UnixQFileInfoRetry; | |
4340 | ||
4341 | return rc; | |
4342 | } | |
4343 | ||
1da177e4 | 4344 | int |
6d5786a3 | 4345 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4346 | const unsigned char *searchName, |
582d21e5 | 4347 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4348 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4349 | { |
4350 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4351 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4352 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4353 | int rc = 0; | |
4354 | int bytes_returned = 0; | |
4355 | int name_len; | |
4356 | __u16 params, byte_count; | |
4357 | ||
f96637be | 4358 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4359 | UnixQPathInfoRetry: |
4360 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4361 | (void **) &pSMBr); | |
4362 | if (rc) | |
4363 | return rc; | |
4364 | ||
4365 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4366 | name_len = | |
acbbb76a SF |
4367 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4368 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4369 | name_len++; /* trailing null */ |
4370 | name_len *= 2; | |
50c2f753 | 4371 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4372 | name_len = strnlen(searchName, PATH_MAX); |
4373 | name_len++; /* trailing null */ | |
4374 | strncpy(pSMB->FileName, searchName, name_len); | |
4375 | } | |
4376 | ||
50c2f753 | 4377 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4378 | pSMB->TotalDataCount = 0; |
4379 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4380 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4381 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4382 | pSMB->MaxSetupCount = 0; |
4383 | pSMB->Reserved = 0; | |
4384 | pSMB->Flags = 0; | |
4385 | pSMB->Timeout = 0; | |
4386 | pSMB->Reserved2 = 0; | |
4387 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4388 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4389 | pSMB->DataCount = 0; |
4390 | pSMB->DataOffset = 0; | |
4391 | pSMB->SetupCount = 1; | |
4392 | pSMB->Reserved3 = 0; | |
4393 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4394 | byte_count = params + 1 /* pad */ ; | |
4395 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4396 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4397 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4398 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4399 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4400 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4401 | ||
4402 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4403 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4404 | if (rc) { | |
ebcc943c | 4405 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4406 | } else { /* decode response */ |
4407 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4408 | ||
820a803f | 4409 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4410 | 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 |
4411 | rc = -EIO; /* bad smb */ |
4412 | } else { | |
4413 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4414 | memcpy((char *) pFindData, | |
4415 | (char *) &pSMBr->hdr.Protocol + | |
4416 | data_offset, | |
630f3f0c | 4417 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4418 | } |
4419 | } | |
4420 | cifs_buf_release(pSMB); | |
4421 | if (rc == -EAGAIN) | |
4422 | goto UnixQPathInfoRetry; | |
4423 | ||
4424 | return rc; | |
4425 | } | |
4426 | ||
1da177e4 LT |
4427 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4428 | int | |
6d5786a3 | 4429 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4430 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4431 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4432 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4433 | { |
4434 | /* level 257 SMB_ */ | |
4435 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4436 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4437 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4438 | int rc = 0; |
4439 | int bytes_returned = 0; | |
c052e2b4 | 4440 | int name_len, remap; |
1da177e4 | 4441 | __u16 params, byte_count; |
c052e2b4 | 4442 | struct nls_table *nls_codepage; |
1da177e4 | 4443 | |
f96637be | 4444 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4445 | |
4446 | findFirstRetry: | |
4447 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4448 | (void **) &pSMBr); | |
4449 | if (rc) | |
4450 | return rc; | |
4451 | ||
c052e2b4 | 4452 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4453 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4454 | |
1da177e4 LT |
4455 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4456 | name_len = | |
acbbb76a SF |
4457 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4458 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4459 | /* We can not add the asterik earlier in case |
4460 | it got remapped to 0xF03A as if it were part of the | |
4461 | directory name instead of a wildcard */ | |
1da177e4 | 4462 | name_len *= 2; |
c052e2b4 SP |
4463 | if (msearch) { |
4464 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4465 | pSMB->FileName[name_len+1] = 0; | |
4466 | pSMB->FileName[name_len+2] = '*'; | |
4467 | pSMB->FileName[name_len+3] = 0; | |
4468 | name_len += 4; /* now the trailing null */ | |
4469 | /* null terminate just in case */ | |
4470 | pSMB->FileName[name_len] = 0; | |
4471 | pSMB->FileName[name_len+1] = 0; | |
4472 | name_len += 2; | |
4473 | } | |
1da177e4 LT |
4474 | } else { /* BB add check for overrun of SMB buf BB */ |
4475 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4476 | /* BB fix here and in unicode clause above ie |
790fe579 | 4477 | if (name_len > buffersize-header) |
1da177e4 LT |
4478 | free buffer exit; BB */ |
4479 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4480 | if (msearch) { |
4481 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4482 | pSMB->FileName[name_len+1] = '*'; | |
4483 | pSMB->FileName[name_len+2] = 0; | |
4484 | name_len += 3; | |
4485 | } | |
1da177e4 LT |
4486 | } |
4487 | ||
4488 | params = 12 + name_len /* includes null */ ; | |
4489 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4490 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4491 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4492 | pSMB->MaxSetupCount = 0; |
4493 | pSMB->Reserved = 0; | |
4494 | pSMB->Flags = 0; | |
4495 | pSMB->Timeout = 0; | |
4496 | pSMB->Reserved2 = 0; | |
4497 | byte_count = params + 1 /* pad */ ; | |
4498 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4499 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4500 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4501 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4502 | - 4); | |
1da177e4 LT |
4503 | pSMB->DataCount = 0; |
4504 | pSMB->DataOffset = 0; | |
4505 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4506 | pSMB->Reserved3 = 0; | |
4507 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4508 | pSMB->SearchAttributes = | |
4509 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4510 | ATTR_DIRECTORY); | |
50c2f753 | 4511 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4512 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4513 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4514 | ||
4515 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4516 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4517 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4518 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4519 | ||
4520 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4521 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4522 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4523 | |
88274815 SF |
4524 | if (rc) {/* BB add logic to retry regular search if Unix search |
4525 | rejected unexpectedly by server */ | |
1da177e4 | 4526 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4527 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4528 | |
88274815 | 4529 | cifs_buf_release(pSMB); |
1da177e4 LT |
4530 | |
4531 | /* BB eventually could optimize out free and realloc of buf */ | |
4532 | /* for this case */ | |
4533 | if (rc == -EAGAIN) | |
4534 | goto findFirstRetry; | |
4535 | } else { /* decode response */ | |
4536 | /* BB remember to free buffer if error BB */ | |
4537 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4538 | if (rc == 0) { |
b77d753c SF |
4539 | unsigned int lnoff; |
4540 | ||
1da177e4 | 4541 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4542 | psrch_inf->unicode = true; |
1da177e4 | 4543 | else |
4b18f2a9 | 4544 | psrch_inf->unicode = false; |
1da177e4 LT |
4545 | |
4546 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4547 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4548 | psrch_inf->srch_entries_start = |
4549 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4550 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4551 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4552 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4553 | ||
790fe579 | 4554 | if (parms->EndofSearch) |
4b18f2a9 | 4555 | psrch_inf->endOfSearch = true; |
1da177e4 | 4556 | else |
4b18f2a9 | 4557 | psrch_inf->endOfSearch = false; |
1da177e4 | 4558 | |
50c2f753 SF |
4559 | psrch_inf->entries_in_buffer = |
4560 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4561 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4562 | psrch_inf->entries_in_buffer; |
b77d753c | 4563 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4564 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4565 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4566 | psrch_inf->last_entry = NULL; |
4567 | return rc; | |
4568 | } | |
4569 | ||
0752f152 | 4570 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4571 | lnoff; |
4572 | ||
c052e2b4 SP |
4573 | if (pnetfid) |
4574 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4575 | } else { |
4576 | cifs_buf_release(pSMB); | |
4577 | } | |
4578 | } | |
4579 | ||
4580 | return rc; | |
4581 | } | |
4582 | ||
6d5786a3 PS |
4583 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4584 | __u16 searchHandle, __u16 search_flags, | |
4585 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4586 | { |
4587 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4588 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4589 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4590 | char *response_data; |
4591 | int rc = 0; | |
9438fabb JL |
4592 | int bytes_returned; |
4593 | unsigned int name_len; | |
1da177e4 LT |
4594 | __u16 params, byte_count; |
4595 | ||
f96637be | 4596 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4597 | |
4b18f2a9 | 4598 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4599 | return -ENOENT; |
4600 | ||
4601 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4602 | (void **) &pSMBr); | |
4603 | if (rc) | |
4604 | return rc; | |
4605 | ||
50c2f753 | 4606 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4607 | byte_count = 0; |
4608 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4609 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4610 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4611 | pSMB->MaxSetupCount = 0; |
4612 | pSMB->Reserved = 0; | |
4613 | pSMB->Flags = 0; | |
4614 | pSMB->Timeout = 0; | |
4615 | pSMB->Reserved2 = 0; | |
4616 | pSMB->ParameterOffset = cpu_to_le16( | |
4617 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4618 | pSMB->DataCount = 0; | |
4619 | pSMB->DataOffset = 0; | |
4620 | pSMB->SetupCount = 1; | |
4621 | pSMB->Reserved3 = 0; | |
4622 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4623 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4624 | pSMB->SearchCount = | |
630f3f0c | 4625 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4626 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4627 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4628 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4629 | |
4630 | name_len = psrch_inf->resume_name_len; | |
4631 | params += name_len; | |
790fe579 | 4632 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4633 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4634 | byte_count += name_len; | |
ef6724e3 SF |
4635 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4636 | pSMB->ResumeFileName[name_len] = 0; | |
4637 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4638 | } else { |
4639 | rc = -EINVAL; | |
4640 | goto FNext2_err_exit; | |
4641 | } | |
4642 | byte_count = params + 1 /* pad */ ; | |
4643 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4644 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4645 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4646 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4647 | |
1da177e4 LT |
4648 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4649 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4650 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4651 | if (rc) { |
4652 | if (rc == -EBADF) { | |
4b18f2a9 | 4653 | psrch_inf->endOfSearch = true; |
6353450a | 4654 | cifs_buf_release(pSMB); |
50c2f753 | 4655 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4656 | } else |
f96637be | 4657 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4658 | } else { /* decode response */ |
4659 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4660 | |
790fe579 | 4661 | if (rc == 0) { |
b77d753c SF |
4662 | unsigned int lnoff; |
4663 | ||
1da177e4 LT |
4664 | /* BB fixme add lock for file (srch_info) struct here */ |
4665 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4666 | psrch_inf->unicode = true; |
1da177e4 | 4667 | else |
4b18f2a9 | 4668 | psrch_inf->unicode = false; |
1da177e4 LT |
4669 | response_data = (char *) &pSMBr->hdr.Protocol + |
4670 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4671 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4672 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4673 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4674 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4675 | cifs_small_buf_release( |
4676 | psrch_inf->ntwrk_buf_start); | |
4677 | else | |
4678 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4679 | psrch_inf->srch_entries_start = response_data; |
4680 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4681 | psrch_inf->smallBuf = 0; |
790fe579 | 4682 | if (parms->EndofSearch) |
4b18f2a9 | 4683 | psrch_inf->endOfSearch = true; |
1da177e4 | 4684 | else |
4b18f2a9 | 4685 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4686 | psrch_inf->entries_in_buffer = |
4687 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4688 | psrch_inf->index_of_last_entry += |
4689 | psrch_inf->entries_in_buffer; | |
b77d753c | 4690 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4691 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4692 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4693 | psrch_inf->last_entry = NULL; |
4694 | return rc; | |
4695 | } else | |
4696 | psrch_inf->last_entry = | |
4697 | psrch_inf->srch_entries_start + lnoff; | |
4698 | ||
f96637be JP |
4699 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4700 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4701 | |
4702 | /* BB fixme add unlock here */ | |
4703 | } | |
4704 | ||
4705 | } | |
4706 | ||
4707 | /* BB On error, should we leave previous search buf (and count and | |
4708 | last entry fields) intact or free the previous one? */ | |
4709 | ||
4710 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4711 | since file handle passed in no longer valid */ | |
4712 | FNext2_err_exit: | |
4713 | if (rc != 0) | |
4714 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4715 | return rc; |
4716 | } | |
4717 | ||
4718 | int | |
6d5786a3 | 4719 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4720 | const __u16 searchHandle) |
1da177e4 LT |
4721 | { |
4722 | int rc = 0; | |
4723 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4724 | |
f96637be | 4725 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4726 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4727 | ||
4728 | /* no sense returning error if session restarted | |
4729 | as file handle has been closed */ | |
790fe579 | 4730 | if (rc == -EAGAIN) |
1da177e4 LT |
4731 | return 0; |
4732 | if (rc) | |
4733 | return rc; | |
4734 | ||
1da177e4 LT |
4735 | pSMB->FileID = searchHandle; |
4736 | pSMB->ByteCount = 0; | |
792af7b0 | 4737 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4738 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4739 | if (rc) |
f96637be | 4740 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4741 | |
44c58186 | 4742 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4743 | |
4744 | /* Since session is dead, search handle closed on server already */ | |
4745 | if (rc == -EAGAIN) | |
4746 | rc = 0; | |
4747 | ||
4748 | return rc; | |
4749 | } | |
4750 | ||
1da177e4 | 4751 | int |
6d5786a3 | 4752 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4753 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4754 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4755 | { |
4756 | int rc = 0; | |
4757 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4758 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4759 | int name_len, bytes_returned; | |
4760 | __u16 params, byte_count; | |
4761 | ||
f96637be | 4762 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4763 | if (tcon == NULL) |
50c2f753 | 4764 | return -ENODEV; |
1da177e4 LT |
4765 | |
4766 | GetInodeNumberRetry: | |
4767 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4768 | (void **) &pSMBr); |
1da177e4 LT |
4769 | if (rc) |
4770 | return rc; | |
4771 | ||
1da177e4 LT |
4772 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4773 | name_len = | |
acbbb76a | 4774 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4775 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4776 | remap); |
1da177e4 LT |
4777 | name_len++; /* trailing null */ |
4778 | name_len *= 2; | |
50c2f753 | 4779 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4780 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4781 | name_len++; /* trailing null */ |
1208ef1f | 4782 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4783 | } |
4784 | ||
4785 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4786 | pSMB->TotalDataCount = 0; | |
4787 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4788 | /* BB find exact max data count below from sess structure BB */ | |
4789 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4790 | pSMB->MaxSetupCount = 0; | |
4791 | pSMB->Reserved = 0; | |
4792 | pSMB->Flags = 0; | |
4793 | pSMB->Timeout = 0; | |
4794 | pSMB->Reserved2 = 0; | |
4795 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4796 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4797 | pSMB->DataCount = 0; |
4798 | pSMB->DataOffset = 0; | |
4799 | pSMB->SetupCount = 1; | |
4800 | pSMB->Reserved3 = 0; | |
4801 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4802 | byte_count = params + 1 /* pad */ ; | |
4803 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4804 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4805 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4806 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4807 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4808 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4809 | ||
4810 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4811 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4812 | if (rc) { | |
f96637be | 4813 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4814 | } else { |
4815 | /* decode response */ | |
4816 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4817 | /* BB also check enough total bytes returned */ |
820a803f | 4818 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4819 | /* If rc should we check for EOPNOSUPP and |
4820 | disable the srvino flag? or in caller? */ | |
4821 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4822 | else { |
1da177e4 LT |
4823 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4824 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4825 | struct file_internal_info *pfinfo; |
1da177e4 | 4826 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4827 | if (count < 8) { |
f96637be | 4828 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4829 | rc = -EIO; |
4830 | goto GetInodeNumOut; | |
4831 | } | |
4832 | pfinfo = (struct file_internal_info *) | |
4833 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4834 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4835 | } |
4836 | } | |
4837 | GetInodeNumOut: | |
4838 | cifs_buf_release(pSMB); | |
4839 | if (rc == -EAGAIN) | |
4840 | goto GetInodeNumberRetry; | |
4841 | return rc; | |
4842 | } | |
1da177e4 LT |
4843 | |
4844 | int | |
6d5786a3 | 4845 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4846 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4847 | unsigned int *num_of_nodes, |
737b758c | 4848 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4849 | { |
4850 | /* TRANS2_GET_DFS_REFERRAL */ | |
4851 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4852 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4853 | int rc = 0; |
4854 | int bytes_returned; | |
4855 | int name_len; | |
1da177e4 | 4856 | __u16 params, byte_count; |
c2cf07d5 SF |
4857 | *num_of_nodes = 0; |
4858 | *target_nodes = NULL; | |
1da177e4 | 4859 | |
f96637be | 4860 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4861 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4862 | return -ENODEV; |
b327a717 | 4863 | |
1da177e4 | 4864 | getDFSRetry: |
b327a717 | 4865 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4866 | (void **) &pSMBr); |
4867 | if (rc) | |
4868 | return rc; | |
50c2f753 SF |
4869 | |
4870 | /* server pointer checked in called function, | |
1982c344 | 4871 | but should never be null here anyway */ |
88257360 | 4872 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4873 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4874 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4875 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4876 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4877 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4878 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4879 | |
4880 | if (ses->capabilities & CAP_UNICODE) { | |
4881 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4882 | name_len = | |
acbbb76a | 4883 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4884 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4885 | remap); |
1da177e4 LT |
4886 | name_len++; /* trailing null */ |
4887 | name_len *= 2; | |
50c2f753 | 4888 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4889 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4890 | name_len++; /* trailing null */ |
b669f33c | 4891 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4892 | } |
4893 | ||
65c3b205 | 4894 | if (ses->server->sign) |
38d77c50 | 4895 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4896 | |
50c2f753 | 4897 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4898 | |
1da177e4 LT |
4899 | params = 2 /* level */ + name_len /*includes null */ ; |
4900 | pSMB->TotalDataCount = 0; | |
4901 | pSMB->DataCount = 0; | |
4902 | pSMB->DataOffset = 0; | |
4903 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4904 | /* BB find exact max SMB PDU from sess structure BB */ |
4905 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4906 | pSMB->MaxSetupCount = 0; |
4907 | pSMB->Reserved = 0; | |
4908 | pSMB->Flags = 0; | |
4909 | pSMB->Timeout = 0; | |
4910 | pSMB->Reserved2 = 0; | |
4911 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4912 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4913 | pSMB->SetupCount = 1; |
4914 | pSMB->Reserved3 = 0; | |
4915 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4916 | byte_count = params + 3 /* pad */ ; | |
4917 | pSMB->ParameterCount = cpu_to_le16(params); | |
4918 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4919 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4920 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4921 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4922 | ||
4923 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4924 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4925 | if (rc) { | |
f96637be | 4926 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4927 | goto GetDFSRefExit; |
4928 | } | |
4929 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4930 | |
c2cf07d5 | 4931 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4932 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4933 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4934 | goto GetDFSRefExit; |
4935 | } | |
c2cf07d5 | 4936 | |
f96637be JP |
4937 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4938 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4939 | |
fec4585f | 4940 | /* parse returned result into more usable form */ |
4ecce920 AA |
4941 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4942 | le16_to_cpu(pSMBr->t2.DataCount), | |
4943 | num_of_nodes, target_nodes, nls_codepage, | |
4944 | remap, search_name, | |
284316dd | 4945 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4946 | |
1da177e4 | 4947 | GetDFSRefExit: |
0d817bc0 | 4948 | cifs_buf_release(pSMB); |
1da177e4 LT |
4949 | |
4950 | if (rc == -EAGAIN) | |
4951 | goto getDFSRetry; | |
4952 | ||
4953 | return rc; | |
4954 | } | |
4955 | ||
20962438 SF |
4956 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4957 | int | |
6d5786a3 PS |
4958 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4959 | struct kstatfs *FSData) | |
20962438 SF |
4960 | { |
4961 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4962 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4963 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4964 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4965 | int rc = 0; | |
4966 | int bytes_returned = 0; | |
4967 | __u16 params, byte_count; | |
4968 | ||
f96637be | 4969 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4970 | oldQFSInfoRetry: |
4971 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4972 | (void **) &pSMBr); | |
4973 | if (rc) | |
4974 | return rc; | |
20962438 SF |
4975 | |
4976 | params = 2; /* level */ | |
4977 | pSMB->TotalDataCount = 0; | |
4978 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4979 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4980 | pSMB->MaxSetupCount = 0; | |
4981 | pSMB->Reserved = 0; | |
4982 | pSMB->Flags = 0; | |
4983 | pSMB->Timeout = 0; | |
4984 | pSMB->Reserved2 = 0; | |
4985 | byte_count = params + 1 /* pad */ ; | |
4986 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4987 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4988 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4989 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4990 | pSMB->DataCount = 0; | |
4991 | pSMB->DataOffset = 0; | |
4992 | pSMB->SetupCount = 1; | |
4993 | pSMB->Reserved3 = 0; | |
4994 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4995 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4996 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4997 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4998 | ||
4999 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5000 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5001 | if (rc) { | |
f96637be | 5002 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
5003 | } else { /* decode response */ |
5004 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5005 | ||
820a803f | 5006 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
5007 | rc = -EIO; /* bad smb */ |
5008 | else { | |
5009 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 5010 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 5011 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 5012 | |
50c2f753 | 5013 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
5014 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
5015 | FSData->f_bsize = | |
5016 | le16_to_cpu(response_data->BytesPerSector) * | |
5017 | le32_to_cpu(response_data-> | |
5018 | SectorsPerAllocationUnit); | |
5019 | FSData->f_blocks = | |
50c2f753 | 5020 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
5021 | FSData->f_bfree = FSData->f_bavail = |
5022 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5023 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5024 | (unsigned long long)FSData->f_blocks, | |
5025 | (unsigned long long)FSData->f_bfree, | |
5026 | FSData->f_bsize); | |
20962438 SF |
5027 | } |
5028 | } | |
5029 | cifs_buf_release(pSMB); | |
5030 | ||
5031 | if (rc == -EAGAIN) | |
5032 | goto oldQFSInfoRetry; | |
5033 | ||
5034 | return rc; | |
5035 | } | |
5036 | ||
1da177e4 | 5037 | int |
6d5786a3 PS |
5038 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5039 | struct kstatfs *FSData) | |
1da177e4 LT |
5040 | { |
5041 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5042 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5043 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5044 | FILE_SYSTEM_INFO *response_data; | |
5045 | int rc = 0; | |
5046 | int bytes_returned = 0; | |
5047 | __u16 params, byte_count; | |
5048 | ||
f96637be | 5049 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5050 | QFSInfoRetry: |
5051 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5052 | (void **) &pSMBr); | |
5053 | if (rc) | |
5054 | return rc; | |
5055 | ||
5056 | params = 2; /* level */ | |
5057 | pSMB->TotalDataCount = 0; | |
5058 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5059 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5060 | pSMB->MaxSetupCount = 0; |
5061 | pSMB->Reserved = 0; | |
5062 | pSMB->Flags = 0; | |
5063 | pSMB->Timeout = 0; | |
5064 | pSMB->Reserved2 = 0; | |
5065 | byte_count = params + 1 /* pad */ ; | |
5066 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5067 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5068 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5069 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5070 | pSMB->DataCount = 0; |
5071 | pSMB->DataOffset = 0; | |
5072 | pSMB->SetupCount = 1; | |
5073 | pSMB->Reserved3 = 0; | |
5074 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5075 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5076 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5077 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5078 | ||
5079 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5080 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5081 | if (rc) { | |
f96637be | 5082 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5083 | } else { /* decode response */ |
50c2f753 | 5084 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5085 | |
820a803f | 5086 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5087 | rc = -EIO; /* bad smb */ |
5088 | else { | |
5089 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5090 | |
5091 | response_data = | |
5092 | (FILE_SYSTEM_INFO | |
5093 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5094 | data_offset); | |
5095 | FSData->f_bsize = | |
5096 | le32_to_cpu(response_data->BytesPerSector) * | |
5097 | le32_to_cpu(response_data-> | |
5098 | SectorsPerAllocationUnit); | |
5099 | FSData->f_blocks = | |
5100 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5101 | FSData->f_bfree = FSData->f_bavail = | |
5102 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5103 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5104 | (unsigned long long)FSData->f_blocks, | |
5105 | (unsigned long long)FSData->f_bfree, | |
5106 | FSData->f_bsize); | |
1da177e4 LT |
5107 | } |
5108 | } | |
5109 | cifs_buf_release(pSMB); | |
5110 | ||
5111 | if (rc == -EAGAIN) | |
5112 | goto QFSInfoRetry; | |
5113 | ||
5114 | return rc; | |
5115 | } | |
5116 | ||
5117 | int | |
6d5786a3 | 5118 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5119 | { |
5120 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5121 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5122 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5123 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5124 | int rc = 0; | |
5125 | int bytes_returned = 0; | |
5126 | __u16 params, byte_count; | |
5127 | ||
f96637be | 5128 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5129 | QFSAttributeRetry: |
5130 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5131 | (void **) &pSMBr); | |
5132 | if (rc) | |
5133 | return rc; | |
5134 | ||
5135 | params = 2; /* level */ | |
5136 | pSMB->TotalDataCount = 0; | |
5137 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5138 | /* BB find exact max SMB PDU from sess structure BB */ |
5139 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5140 | pSMB->MaxSetupCount = 0; |
5141 | pSMB->Reserved = 0; | |
5142 | pSMB->Flags = 0; | |
5143 | pSMB->Timeout = 0; | |
5144 | pSMB->Reserved2 = 0; | |
5145 | byte_count = params + 1 /* pad */ ; | |
5146 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5147 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5148 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5149 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5150 | pSMB->DataCount = 0; |
5151 | pSMB->DataOffset = 0; | |
5152 | pSMB->SetupCount = 1; | |
5153 | pSMB->Reserved3 = 0; | |
5154 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5155 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5156 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5157 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5158 | ||
5159 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5160 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5161 | if (rc) { | |
f96637be | 5162 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5163 | } else { /* decode response */ |
5164 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5165 | ||
820a803f | 5166 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5167 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5168 | rc = -EIO; /* bad smb */ |
5169 | } else { | |
5170 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5171 | response_data = | |
5172 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5173 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5174 | data_offset); | |
5175 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5176 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5177 | } |
5178 | } | |
5179 | cifs_buf_release(pSMB); | |
5180 | ||
5181 | if (rc == -EAGAIN) | |
5182 | goto QFSAttributeRetry; | |
5183 | ||
5184 | return rc; | |
5185 | } | |
5186 | ||
5187 | int | |
6d5786a3 | 5188 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5189 | { |
5190 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5191 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5192 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5193 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5194 | int rc = 0; | |
5195 | int bytes_returned = 0; | |
5196 | __u16 params, byte_count; | |
5197 | ||
f96637be | 5198 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5199 | QFSDeviceRetry: |
5200 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5201 | (void **) &pSMBr); | |
5202 | if (rc) | |
5203 | return rc; | |
5204 | ||
5205 | params = 2; /* level */ | |
5206 | pSMB->TotalDataCount = 0; | |
5207 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5208 | /* BB find exact max SMB PDU from sess structure BB */ |
5209 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5210 | pSMB->MaxSetupCount = 0; |
5211 | pSMB->Reserved = 0; | |
5212 | pSMB->Flags = 0; | |
5213 | pSMB->Timeout = 0; | |
5214 | pSMB->Reserved2 = 0; | |
5215 | byte_count = params + 1 /* pad */ ; | |
5216 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5217 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5218 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5219 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5220 | |
5221 | pSMB->DataCount = 0; | |
5222 | pSMB->DataOffset = 0; | |
5223 | pSMB->SetupCount = 1; | |
5224 | pSMB->Reserved3 = 0; | |
5225 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5226 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5227 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5228 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5229 | ||
5230 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5231 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5232 | if (rc) { | |
f96637be | 5233 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5234 | } else { /* decode response */ |
5235 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5236 | ||
820a803f JL |
5237 | if (rc || get_bcc(&pSMBr->hdr) < |
5238 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5239 | rc = -EIO; /* bad smb */ |
5240 | else { | |
5241 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5242 | response_data = | |
737b758c SF |
5243 | (FILE_SYSTEM_DEVICE_INFO *) |
5244 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5245 | data_offset); |
5246 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5247 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5248 | } |
5249 | } | |
5250 | cifs_buf_release(pSMB); | |
5251 | ||
5252 | if (rc == -EAGAIN) | |
5253 | goto QFSDeviceRetry; | |
5254 | ||
5255 | return rc; | |
5256 | } | |
5257 | ||
5258 | int | |
6d5786a3 | 5259 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5260 | { |
5261 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5262 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5263 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5264 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5265 | int rc = 0; | |
5266 | int bytes_returned = 0; | |
5267 | __u16 params, byte_count; | |
5268 | ||
f96637be | 5269 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5270 | QFSUnixRetry: |
f569599a JL |
5271 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5272 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5273 | if (rc) |
5274 | return rc; | |
5275 | ||
5276 | params = 2; /* level */ | |
5277 | pSMB->TotalDataCount = 0; | |
5278 | pSMB->DataCount = 0; | |
5279 | pSMB->DataOffset = 0; | |
5280 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5281 | /* BB find exact max SMB PDU from sess structure BB */ |
5282 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5283 | pSMB->MaxSetupCount = 0; |
5284 | pSMB->Reserved = 0; | |
5285 | pSMB->Flags = 0; | |
5286 | pSMB->Timeout = 0; | |
5287 | pSMB->Reserved2 = 0; | |
5288 | byte_count = params + 1 /* pad */ ; | |
5289 | pSMB->ParameterCount = cpu_to_le16(params); | |
5290 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5291 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5292 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5293 | pSMB->SetupCount = 1; |
5294 | pSMB->Reserved3 = 0; | |
5295 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5296 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5297 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5298 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5299 | ||
5300 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5301 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5302 | if (rc) { | |
f96637be | 5303 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5304 | } else { /* decode response */ |
5305 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5306 | ||
820a803f | 5307 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5308 | rc = -EIO; /* bad smb */ |
5309 | } else { | |
5310 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5311 | response_data = | |
5312 | (FILE_SYSTEM_UNIX_INFO | |
5313 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5314 | data_offset); | |
5315 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5316 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5317 | } |
5318 | } | |
5319 | cifs_buf_release(pSMB); | |
5320 | ||
5321 | if (rc == -EAGAIN) | |
5322 | goto QFSUnixRetry; | |
5323 | ||
5324 | ||
5325 | return rc; | |
5326 | } | |
5327 | ||
ac67055e | 5328 | int |
6d5786a3 | 5329 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5330 | { |
5331 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5332 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5333 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5334 | int rc = 0; | |
5335 | int bytes_returned = 0; | |
5336 | __u16 params, param_offset, offset, byte_count; | |
5337 | ||
f96637be | 5338 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5339 | SETFSUnixRetry: |
f26282c9 | 5340 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5341 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5342 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5343 | if (rc) |
5344 | return rc; | |
5345 | ||
5346 | params = 4; /* 2 bytes zero followed by info level. */ | |
5347 | pSMB->MaxSetupCount = 0; | |
5348 | pSMB->Reserved = 0; | |
5349 | pSMB->Flags = 0; | |
5350 | pSMB->Timeout = 0; | |
5351 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5352 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5353 | - 4; | |
ac67055e JA |
5354 | offset = param_offset + params; |
5355 | ||
5356 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5357 | /* BB find exact max SMB PDU from sess structure BB */ |
5358 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5359 | pSMB->SetupCount = 1; |
5360 | pSMB->Reserved3 = 0; | |
5361 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5362 | byte_count = 1 /* pad */ + params + 12; | |
5363 | ||
5364 | pSMB->DataCount = cpu_to_le16(12); | |
5365 | pSMB->ParameterCount = cpu_to_le16(params); | |
5366 | pSMB->TotalDataCount = pSMB->DataCount; | |
5367 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5368 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5369 | pSMB->DataOffset = cpu_to_le16(offset); | |
5370 | ||
5371 | /* Params. */ | |
5372 | pSMB->FileNum = 0; | |
5373 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5374 | ||
5375 | /* Data. */ | |
5376 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5377 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5378 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5379 | ||
be8e3b00 | 5380 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5381 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5382 | ||
5383 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5384 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5385 | if (rc) { | |
f96637be | 5386 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5387 | } else { /* decode response */ |
5388 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5389 | if (rc) |
ac67055e | 5390 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5391 | } |
5392 | cifs_buf_release(pSMB); | |
5393 | ||
5394 | if (rc == -EAGAIN) | |
5395 | goto SETFSUnixRetry; | |
5396 | ||
5397 | return rc; | |
5398 | } | |
5399 | ||
5400 | ||
1da177e4 LT |
5401 | |
5402 | int | |
6d5786a3 | 5403 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5404 | struct kstatfs *FSData) |
1da177e4 LT |
5405 | { |
5406 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5407 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5408 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5409 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5410 | int rc = 0; | |
5411 | int bytes_returned = 0; | |
5412 | __u16 params, byte_count; | |
5413 | ||
f96637be | 5414 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5415 | QFSPosixRetry: |
5416 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5417 | (void **) &pSMBr); | |
5418 | if (rc) | |
5419 | return rc; | |
5420 | ||
5421 | params = 2; /* level */ | |
5422 | pSMB->TotalDataCount = 0; | |
5423 | pSMB->DataCount = 0; | |
5424 | pSMB->DataOffset = 0; | |
5425 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5426 | /* BB find exact max SMB PDU from sess structure BB */ |
5427 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5428 | pSMB->MaxSetupCount = 0; |
5429 | pSMB->Reserved = 0; | |
5430 | pSMB->Flags = 0; | |
5431 | pSMB->Timeout = 0; | |
5432 | pSMB->Reserved2 = 0; | |
5433 | byte_count = params + 1 /* pad */ ; | |
5434 | pSMB->ParameterCount = cpu_to_le16(params); | |
5435 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5436 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5437 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5438 | pSMB->SetupCount = 1; |
5439 | pSMB->Reserved3 = 0; | |
5440 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5441 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5442 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5443 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5444 | ||
5445 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5446 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5447 | if (rc) { | |
f96637be | 5448 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5449 | } else { /* decode response */ |
5450 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5451 | ||
820a803f | 5452 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5453 | rc = -EIO; /* bad smb */ |
5454 | } else { | |
5455 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5456 | response_data = | |
5457 | (FILE_SYSTEM_POSIX_INFO | |
5458 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5459 | data_offset); | |
5460 | FSData->f_bsize = | |
5461 | le32_to_cpu(response_data->BlockSize); | |
5462 | FSData->f_blocks = | |
5463 | le64_to_cpu(response_data->TotalBlocks); | |
5464 | FSData->f_bfree = | |
5465 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5466 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5467 | FSData->f_bavail = FSData->f_bfree; |
5468 | } else { | |
5469 | FSData->f_bavail = | |
50c2f753 | 5470 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5471 | } |
790fe579 | 5472 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5473 | FSData->f_files = |
50c2f753 | 5474 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5475 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5476 | FSData->f_ffree = |
50c2f753 | 5477 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5478 | } |
5479 | } | |
5480 | cifs_buf_release(pSMB); | |
5481 | ||
5482 | if (rc == -EAGAIN) | |
5483 | goto QFSPosixRetry; | |
5484 | ||
5485 | return rc; | |
5486 | } | |
5487 | ||
5488 | ||
d1433418 PS |
5489 | /* |
5490 | * We can not use write of zero bytes trick to set file size due to need for | |
5491 | * large file support. Also note that this SetPathInfo is preferred to | |
5492 | * SetFileInfo based method in next routine which is only needed to work around | |
5493 | * a sharing violation bugin Samba which this routine can run into. | |
5494 | */ | |
1da177e4 | 5495 | int |
6d5786a3 | 5496 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5497 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5498 | bool set_allocation) | |
1da177e4 LT |
5499 | { |
5500 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5501 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5502 | struct file_end_of_file_info *parm_data; | |
5503 | int name_len; | |
5504 | int rc = 0; | |
5505 | int bytes_returned = 0; | |
2baa2682 | 5506 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5507 | |
1da177e4 LT |
5508 | __u16 params, byte_count, data_count, param_offset, offset; |
5509 | ||
f96637be | 5510 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5511 | SetEOFRetry: |
5512 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5513 | (void **) &pSMBr); | |
5514 | if (rc) | |
5515 | return rc; | |
5516 | ||
5517 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5518 | name_len = | |
d1433418 PS |
5519 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5520 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5521 | name_len++; /* trailing null */ |
5522 | name_len *= 2; | |
3e87d803 | 5523 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5524 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5525 | name_len++; /* trailing null */ |
d1433418 | 5526 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5527 | } |
5528 | params = 6 + name_len; | |
26f57364 | 5529 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5530 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5531 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5532 | pSMB->MaxSetupCount = 0; |
5533 | pSMB->Reserved = 0; | |
5534 | pSMB->Flags = 0; | |
5535 | pSMB->Timeout = 0; | |
5536 | pSMB->Reserved2 = 0; | |
5537 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5538 | InformationLevel) - 4; |
1da177e4 | 5539 | offset = param_offset + params; |
d1433418 | 5540 | if (set_allocation) { |
50c2f753 SF |
5541 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5542 | pSMB->InformationLevel = | |
5543 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5544 | else | |
5545 | pSMB->InformationLevel = | |
5546 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5547 | } else /* Set File Size */ { | |
1da177e4 LT |
5548 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5549 | pSMB->InformationLevel = | |
50c2f753 | 5550 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5551 | else |
5552 | pSMB->InformationLevel = | |
50c2f753 | 5553 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5554 | } |
5555 | ||
5556 | parm_data = | |
5557 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5558 | offset); | |
5559 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5560 | pSMB->DataOffset = cpu_to_le16(offset); | |
5561 | pSMB->SetupCount = 1; | |
5562 | pSMB->Reserved3 = 0; | |
5563 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5564 | byte_count = 3 /* pad */ + params + data_count; | |
5565 | pSMB->DataCount = cpu_to_le16(data_count); | |
5566 | pSMB->TotalDataCount = pSMB->DataCount; | |
5567 | pSMB->ParameterCount = cpu_to_le16(params); | |
5568 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5569 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5570 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5571 | parm_data->FileSize = cpu_to_le64(size); |
5572 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5573 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5574 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5575 | if (rc) |
f96637be | 5576 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5577 | |
5578 | cifs_buf_release(pSMB); | |
5579 | ||
5580 | if (rc == -EAGAIN) | |
5581 | goto SetEOFRetry; | |
5582 | ||
5583 | return rc; | |
5584 | } | |
5585 | ||
5586 | int | |
d1433418 PS |
5587 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5588 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5589 | { |
5590 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5591 | struct file_end_of_file_info *parm_data; |
5592 | int rc = 0; | |
1da177e4 LT |
5593 | __u16 params, param_offset, offset, byte_count, count; |
5594 | ||
f96637be JP |
5595 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5596 | (long long)size); | |
cd63499c SF |
5597 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5598 | ||
1da177e4 LT |
5599 | if (rc) |
5600 | return rc; | |
5601 | ||
d1433418 PS |
5602 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5603 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5604 | |
1da177e4 LT |
5605 | params = 6; |
5606 | pSMB->MaxSetupCount = 0; | |
5607 | pSMB->Reserved = 0; | |
5608 | pSMB->Flags = 0; | |
5609 | pSMB->Timeout = 0; | |
5610 | pSMB->Reserved2 = 0; | |
5611 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5612 | offset = param_offset + params; | |
5613 | ||
1da177e4 LT |
5614 | count = sizeof(struct file_end_of_file_info); |
5615 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5616 | /* BB find exact max SMB PDU from sess structure BB */ |
5617 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5618 | pSMB->SetupCount = 1; |
5619 | pSMB->Reserved3 = 0; | |
5620 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5621 | byte_count = 3 /* pad */ + params + count; | |
5622 | pSMB->DataCount = cpu_to_le16(count); | |
5623 | pSMB->ParameterCount = cpu_to_le16(params); | |
5624 | pSMB->TotalDataCount = pSMB->DataCount; | |
5625 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5626 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5627 | parm_data = | |
50c2f753 SF |
5628 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5629 | + offset); | |
1da177e4 LT |
5630 | pSMB->DataOffset = cpu_to_le16(offset); |
5631 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5632 | pSMB->Fid = cfile->fid.netfid; |
5633 | if (set_allocation) { | |
1da177e4 LT |
5634 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5635 | pSMB->InformationLevel = | |
5636 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5637 | else | |
5638 | pSMB->InformationLevel = | |
5639 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5640 | } else /* Set File Size */ { |
1da177e4 LT |
5641 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5642 | pSMB->InformationLevel = | |
50c2f753 | 5643 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5644 | else |
5645 | pSMB->InformationLevel = | |
50c2f753 | 5646 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5647 | } |
5648 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5649 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5650 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5651 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5652 | cifs_small_buf_release(pSMB); |
1da177e4 | 5653 | if (rc) { |
f96637be JP |
5654 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5655 | rc); | |
1da177e4 LT |
5656 | } |
5657 | ||
50c2f753 | 5658 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5659 | since file handle passed in no longer valid */ |
5660 | ||
5661 | return rc; | |
5662 | } | |
5663 | ||
50c2f753 | 5664 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5665 | an open handle, rather than by pathname - this is awkward due to |
5666 | potential access conflicts on the open, but it is unavoidable for these | |
5667 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5668 | time and resort to the original setpathinfo level which takes the ancient | |
5669 | DOS time format with 2 second granularity */ | |
5670 | int | |
6d5786a3 | 5671 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5672 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5673 | { |
5674 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5675 | char *data_offset; |
5676 | int rc = 0; | |
1da177e4 LT |
5677 | __u16 params, param_offset, offset, byte_count, count; |
5678 | ||
f96637be | 5679 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5680 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5681 | ||
1da177e4 LT |
5682 | if (rc) |
5683 | return rc; | |
5684 | ||
2dd2dfa0 JL |
5685 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5686 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5687 | |
1da177e4 LT |
5688 | params = 6; |
5689 | pSMB->MaxSetupCount = 0; | |
5690 | pSMB->Reserved = 0; | |
5691 | pSMB->Flags = 0; | |
5692 | pSMB->Timeout = 0; | |
5693 | pSMB->Reserved2 = 0; | |
5694 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5695 | offset = param_offset + params; | |
5696 | ||
b2a3ad9c JL |
5697 | data_offset = (char *)pSMB + |
5698 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5699 | |
26f57364 | 5700 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5701 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5702 | /* BB find max SMB PDU from sess */ |
5703 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5704 | pSMB->SetupCount = 1; |
5705 | pSMB->Reserved3 = 0; | |
5706 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5707 | byte_count = 3 /* pad */ + params + count; | |
5708 | pSMB->DataCount = cpu_to_le16(count); | |
5709 | pSMB->ParameterCount = cpu_to_le16(params); | |
5710 | pSMB->TotalDataCount = pSMB->DataCount; | |
5711 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5712 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5713 | pSMB->DataOffset = cpu_to_le16(offset); | |
5714 | pSMB->Fid = fid; | |
5715 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5716 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5717 | else | |
5718 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5719 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5720 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5721 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5722 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5723 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5724 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5725 | if (rc) |
f96637be JP |
5726 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5727 | rc); | |
1da177e4 | 5728 | |
50c2f753 | 5729 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5730 | since file handle passed in no longer valid */ |
5731 | ||
5732 | return rc; | |
5733 | } | |
5734 | ||
6d22f098 | 5735 | int |
6d5786a3 | 5736 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5737 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5738 | { | |
5739 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5740 | char *data_offset; | |
5741 | int rc = 0; | |
5742 | __u16 params, param_offset, offset, byte_count, count; | |
5743 | ||
f96637be | 5744 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5745 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5746 | ||
5747 | if (rc) | |
5748 | return rc; | |
5749 | ||
5750 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5751 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5752 | ||
5753 | params = 6; | |
5754 | pSMB->MaxSetupCount = 0; | |
5755 | pSMB->Reserved = 0; | |
5756 | pSMB->Flags = 0; | |
5757 | pSMB->Timeout = 0; | |
5758 | pSMB->Reserved2 = 0; | |
5759 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5760 | offset = param_offset + params; | |
5761 | ||
5762 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5763 | ||
5764 | count = 1; | |
5765 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5766 | /* BB find max SMB PDU from sess */ | |
5767 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5768 | pSMB->SetupCount = 1; | |
5769 | pSMB->Reserved3 = 0; | |
5770 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5771 | byte_count = 3 /* pad */ + params + count; | |
5772 | pSMB->DataCount = cpu_to_le16(count); | |
5773 | pSMB->ParameterCount = cpu_to_le16(params); | |
5774 | pSMB->TotalDataCount = pSMB->DataCount; | |
5775 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5776 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5777 | pSMB->DataOffset = cpu_to_le16(offset); | |
5778 | pSMB->Fid = fid; | |
5779 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5780 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5781 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5782 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5783 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5784 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5785 | cifs_small_buf_release(pSMB); |
6d22f098 | 5786 | if (rc) |
f96637be | 5787 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5788 | |
5789 | return rc; | |
5790 | } | |
1da177e4 LT |
5791 | |
5792 | int | |
6d5786a3 | 5793 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5794 | const char *fileName, const FILE_BASIC_INFO *data, |
5795 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5796 | { |
5797 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5798 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5799 | int name_len; | |
5800 | int rc = 0; | |
5801 | int bytes_returned = 0; | |
5802 | char *data_offset; | |
5803 | __u16 params, param_offset, offset, byte_count, count; | |
5804 | ||
f96637be | 5805 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5806 | |
5807 | SetTimesRetry: | |
5808 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5809 | (void **) &pSMBr); | |
5810 | if (rc) | |
5811 | return rc; | |
5812 | ||
5813 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5814 | name_len = | |
acbbb76a SF |
5815 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5816 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5817 | name_len++; /* trailing null */ |
5818 | name_len *= 2; | |
50c2f753 | 5819 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5820 | name_len = strnlen(fileName, PATH_MAX); |
5821 | name_len++; /* trailing null */ | |
5822 | strncpy(pSMB->FileName, fileName, name_len); | |
5823 | } | |
5824 | ||
5825 | params = 6 + name_len; | |
26f57364 | 5826 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5827 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5828 | /* BB find max SMB PDU from sess structure BB */ |
5829 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5830 | pSMB->MaxSetupCount = 0; |
5831 | pSMB->Reserved = 0; | |
5832 | pSMB->Flags = 0; | |
5833 | pSMB->Timeout = 0; | |
5834 | pSMB->Reserved2 = 0; | |
5835 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5836 | InformationLevel) - 4; |
1da177e4 LT |
5837 | offset = param_offset + params; |
5838 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5839 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5840 | pSMB->DataOffset = cpu_to_le16(offset); | |
5841 | pSMB->SetupCount = 1; | |
5842 | pSMB->Reserved3 = 0; | |
5843 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5844 | byte_count = 3 /* pad */ + params + count; | |
5845 | ||
5846 | pSMB->DataCount = cpu_to_le16(count); | |
5847 | pSMB->ParameterCount = cpu_to_le16(params); | |
5848 | pSMB->TotalDataCount = pSMB->DataCount; | |
5849 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5850 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5851 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5852 | else | |
5853 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5854 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5855 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5856 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5857 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5858 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5859 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5860 | if (rc) |
f96637be | 5861 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5862 | |
5863 | cifs_buf_release(pSMB); | |
5864 | ||
5865 | if (rc == -EAGAIN) | |
5866 | goto SetTimesRetry; | |
5867 | ||
5868 | return rc; | |
5869 | } | |
5870 | ||
5871 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5872 | /* Can be used to set attributes */ | |
5873 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5874 | handling it anyway and NT4 was what we thought it would be needed for | |
5875 | Do not delete it until we prove whether needed for Win9x though */ | |
5876 | int | |
6d5786a3 | 5877 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5878 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5879 | { | |
5880 | SETATTR_REQ *pSMB = NULL; | |
5881 | SETATTR_RSP *pSMBr = NULL; | |
5882 | int rc = 0; | |
5883 | int bytes_returned; | |
5884 | int name_len; | |
5885 | ||
f96637be | 5886 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5887 | |
5888 | SetAttrLgcyRetry: | |
5889 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5890 | (void **) &pSMBr); | |
5891 | if (rc) | |
5892 | return rc; | |
5893 | ||
5894 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5895 | name_len = | |
acbbb76a SF |
5896 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5897 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5898 | name_len++; /* trailing null */ |
5899 | name_len *= 2; | |
50c2f753 | 5900 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5901 | name_len = strnlen(fileName, PATH_MAX); |
5902 | name_len++; /* trailing null */ | |
5903 | strncpy(pSMB->fileName, fileName, name_len); | |
5904 | } | |
5905 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5906 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5907 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5908 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5909 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5910 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5911 | if (rc) |
f96637be | 5912 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5913 | |
5914 | cifs_buf_release(pSMB); | |
5915 | ||
5916 | if (rc == -EAGAIN) | |
5917 | goto SetAttrLgcyRetry; | |
5918 | ||
5919 | return rc; | |
5920 | } | |
5921 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5922 | ||
654cf14a JL |
5923 | static void |
5924 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5925 | const struct cifs_unix_set_info_args *args) | |
5926 | { | |
49418b2c | 5927 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5928 | u64 mode = args->mode; |
5929 | ||
49418b2c EB |
5930 | if (uid_valid(args->uid)) |
5931 | uid = from_kuid(&init_user_ns, args->uid); | |
5932 | if (gid_valid(args->gid)) | |
5933 | gid = from_kgid(&init_user_ns, args->gid); | |
5934 | ||
654cf14a JL |
5935 | /* |
5936 | * Samba server ignores set of file size to zero due to bugs in some | |
5937 | * older clients, but we should be precise - we use SetFileSize to | |
5938 | * set file size and do not want to truncate file size to zero | |
25985edc | 5939 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5940 | * zero instead of -1 here |
5941 | */ | |
5942 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5943 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5944 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5945 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5946 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5947 | data_offset->Uid = cpu_to_le64(uid); |
5948 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5949 | /* better to leave device as zero when it is */ |
5950 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5951 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5952 | data_offset->Permissions = cpu_to_le64(mode); | |
5953 | ||
5954 | if (S_ISREG(mode)) | |
5955 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5956 | else if (S_ISDIR(mode)) | |
5957 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5958 | else if (S_ISLNK(mode)) | |
5959 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5960 | else if (S_ISCHR(mode)) | |
5961 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5962 | else if (S_ISBLK(mode)) | |
5963 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5964 | else if (S_ISFIFO(mode)) | |
5965 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5966 | else if (S_ISSOCK(mode)) | |
5967 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5968 | } | |
5969 | ||
3bbeeb3c | 5970 | int |
6d5786a3 | 5971 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5972 | const struct cifs_unix_set_info_args *args, |
5973 | u16 fid, u32 pid_of_opener) | |
5974 | { | |
5975 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5976 | char *data_offset; |
3bbeeb3c JL |
5977 | int rc = 0; |
5978 | u16 params, param_offset, offset, byte_count, count; | |
5979 | ||
f96637be | 5980 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5981 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5982 | ||
5983 | if (rc) | |
5984 | return rc; | |
5985 | ||
5986 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5987 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5988 | ||
5989 | params = 6; | |
5990 | pSMB->MaxSetupCount = 0; | |
5991 | pSMB->Reserved = 0; | |
5992 | pSMB->Flags = 0; | |
5993 | pSMB->Timeout = 0; | |
5994 | pSMB->Reserved2 = 0; | |
5995 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5996 | offset = param_offset + params; | |
5997 | ||
b2a3ad9c JL |
5998 | data_offset = (char *)pSMB + |
5999 | offsetof(struct smb_hdr, Protocol) + offset; | |
6000 | ||
3bbeeb3c JL |
6001 | count = sizeof(FILE_UNIX_BASIC_INFO); |
6002 | ||
6003 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
6004 | /* BB find max SMB PDU from sess */ | |
6005 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
6006 | pSMB->SetupCount = 1; | |
6007 | pSMB->Reserved3 = 0; | |
6008 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
6009 | byte_count = 3 /* pad */ + params + count; | |
6010 | pSMB->DataCount = cpu_to_le16(count); | |
6011 | pSMB->ParameterCount = cpu_to_le16(params); | |
6012 | pSMB->TotalDataCount = pSMB->DataCount; | |
6013 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6014 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6015 | pSMB->DataOffset = cpu_to_le16(offset); | |
6016 | pSMB->Fid = fid; | |
6017 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6018 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6019 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
6020 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6021 | ||
b2a3ad9c | 6022 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 6023 | |
792af7b0 | 6024 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 6025 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 6026 | if (rc) |
f96637be JP |
6027 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
6028 | rc); | |
3bbeeb3c JL |
6029 | |
6030 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
6031 | since file handle passed in no longer valid */ | |
6032 | ||
6033 | return rc; | |
6034 | } | |
6035 | ||
1da177e4 | 6036 | int |
6d5786a3 | 6037 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6038 | const char *file_name, |
01ea95e3 JL |
6039 | const struct cifs_unix_set_info_args *args, |
6040 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6041 | { |
6042 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6043 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6044 | int name_len; | |
6045 | int rc = 0; | |
6046 | int bytes_returned = 0; | |
6047 | FILE_UNIX_BASIC_INFO *data_offset; | |
6048 | __u16 params, param_offset, offset, count, byte_count; | |
6049 | ||
f96637be | 6050 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6051 | setPermsRetry: |
6052 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6053 | (void **) &pSMBr); | |
6054 | if (rc) | |
6055 | return rc; | |
6056 | ||
6057 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6058 | name_len = | |
ff691e96 | 6059 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6060 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6061 | name_len++; /* trailing null */ |
6062 | name_len *= 2; | |
3e87d803 | 6063 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6064 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6065 | name_len++; /* trailing null */ |
ff691e96 | 6066 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6067 | } |
6068 | ||
6069 | params = 6 + name_len; | |
26f57364 | 6070 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6071 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6072 | /* BB find max SMB PDU from sess structure BB */ |
6073 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6074 | pSMB->MaxSetupCount = 0; |
6075 | pSMB->Reserved = 0; | |
6076 | pSMB->Flags = 0; | |
6077 | pSMB->Timeout = 0; | |
6078 | pSMB->Reserved2 = 0; | |
6079 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6080 | InformationLevel) - 4; |
1da177e4 LT |
6081 | offset = param_offset + params; |
6082 | data_offset = | |
6083 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6084 | offset); | |
6085 | memset(data_offset, 0, count); | |
6086 | pSMB->DataOffset = cpu_to_le16(offset); | |
6087 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6088 | pSMB->SetupCount = 1; | |
6089 | pSMB->Reserved3 = 0; | |
6090 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6091 | byte_count = 3 /* pad */ + params + count; | |
6092 | pSMB->ParameterCount = cpu_to_le16(params); | |
6093 | pSMB->DataCount = cpu_to_le16(count); | |
6094 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6095 | pSMB->TotalDataCount = pSMB->DataCount; | |
6096 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6097 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6098 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6099 | |
654cf14a | 6100 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6101 | |
6102 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6103 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6104 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6105 | if (rc) |
f96637be | 6106 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6107 | |
0d817bc0 | 6108 | cifs_buf_release(pSMB); |
1da177e4 LT |
6109 | if (rc == -EAGAIN) |
6110 | goto setPermsRetry; | |
6111 | return rc; | |
6112 | } | |
6113 | ||
1da177e4 | 6114 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6115 | /* |
6116 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6117 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6118 | * it looks for that attribute name and stuffs that value into the EAData | |
6119 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6120 | * buffer. In both cases, the return value is either the length of the | |
6121 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6122 | * the data isn't copied to it, but the length is returned. | |
6123 | */ | |
1da177e4 | 6124 | ssize_t |
6d5786a3 | 6125 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6126 | const unsigned char *searchName, const unsigned char *ea_name, |
6127 | char *EAData, size_t buf_size, | |
67b4c889 | 6128 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6129 | { |
6130 | /* BB assumes one setup word */ | |
6131 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6132 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
6133 | int remap = cifs_remap(cifs_sb); |
6134 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
6135 | int rc = 0; |
6136 | int bytes_returned; | |
6e462b9f | 6137 | int list_len; |
f0d3868b | 6138 | struct fealist *ea_response_data; |
50c2f753 SF |
6139 | struct fea *temp_fea; |
6140 | char *temp_ptr; | |
0cd126b5 | 6141 | char *end_of_smb; |
f0d3868b | 6142 | __u16 params, byte_count, data_offset; |
5980fc96 | 6143 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6144 | |
f96637be | 6145 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6146 | QAllEAsRetry: |
6147 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6148 | (void **) &pSMBr); | |
6149 | if (rc) | |
6150 | return rc; | |
6151 | ||
6152 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6153 | list_len = |
acbbb76a SF |
6154 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6155 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6156 | list_len++; /* trailing null */ |
6157 | list_len *= 2; | |
1da177e4 | 6158 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6159 | list_len = strnlen(searchName, PATH_MAX); |
6160 | list_len++; /* trailing null */ | |
6161 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6162 | } |
6163 | ||
6e462b9f | 6164 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6165 | pSMB->TotalDataCount = 0; |
6166 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6167 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6168 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6169 | pSMB->MaxSetupCount = 0; |
6170 | pSMB->Reserved = 0; | |
6171 | pSMB->Flags = 0; | |
6172 | pSMB->Timeout = 0; | |
6173 | pSMB->Reserved2 = 0; | |
6174 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6175 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6176 | pSMB->DataCount = 0; |
6177 | pSMB->DataOffset = 0; | |
6178 | pSMB->SetupCount = 1; | |
6179 | pSMB->Reserved3 = 0; | |
6180 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6181 | byte_count = params + 1 /* pad */ ; | |
6182 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6183 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6184 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6185 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6186 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6187 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6188 | ||
6189 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6190 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6191 | if (rc) { | |
f96637be | 6192 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6193 | goto QAllEAsOut; |
6194 | } | |
1da177e4 | 6195 | |
f0d3868b JL |
6196 | |
6197 | /* BB also check enough total bytes returned */ | |
6198 | /* BB we need to improve the validity checking | |
6199 | of these trans2 responses */ | |
6200 | ||
6201 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6202 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6203 | rc = -EIO; /* bad smb */ |
6204 | goto QAllEAsOut; | |
6205 | } | |
6206 | ||
6207 | /* check that length of list is not more than bcc */ | |
6208 | /* check that each entry does not go beyond length | |
6209 | of list */ | |
6210 | /* check that each element of each entry does not | |
6211 | go beyond end of list */ | |
6212 | /* validate_trans2_offsets() */ | |
6213 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6214 | ||
6215 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6216 | ea_response_data = (struct fealist *) | |
6217 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6218 | ||
6e462b9f | 6219 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6220 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6221 | if (list_len <= 8) { |
f96637be | 6222 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6223 | /* didn't find the named attribute */ |
6224 | if (ea_name) | |
6225 | rc = -ENODATA; | |
f0d3868b JL |
6226 | goto QAllEAsOut; |
6227 | } | |
6228 | ||
0cd126b5 | 6229 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6230 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6231 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6232 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6233 | rc = -EIO; |
6234 | goto QAllEAsOut; | |
6235 | } | |
6236 | ||
f0d3868b | 6237 | /* account for ea list len */ |
6e462b9f | 6238 | list_len -= 4; |
f0d3868b JL |
6239 | temp_fea = ea_response_data->list; |
6240 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6241 | while (list_len > 0) { |
122ca007 | 6242 | unsigned int name_len; |
f0d3868b | 6243 | __u16 value_len; |
0cd126b5 | 6244 | |
6e462b9f | 6245 | list_len -= 4; |
f0d3868b | 6246 | temp_ptr += 4; |
0cd126b5 JL |
6247 | /* make sure we can read name_len and value_len */ |
6248 | if (list_len < 0) { | |
f96637be | 6249 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6250 | rc = -EIO; |
6251 | goto QAllEAsOut; | |
6252 | } | |
6253 | ||
6254 | name_len = temp_fea->name_len; | |
6255 | value_len = le16_to_cpu(temp_fea->value_len); | |
6256 | list_len -= name_len + 1 + value_len; | |
6257 | if (list_len < 0) { | |
f96637be | 6258 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6259 | rc = -EIO; |
6260 | goto QAllEAsOut; | |
6261 | } | |
6262 | ||
31c0519f | 6263 | if (ea_name) { |
91d065c4 | 6264 | if (ea_name_len == name_len && |
ac423446 | 6265 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6266 | temp_ptr += name_len + 1; |
6267 | rc = value_len; | |
6268 | if (buf_size == 0) | |
6269 | goto QAllEAsOut; | |
6270 | if ((size_t)value_len > buf_size) { | |
6271 | rc = -ERANGE; | |
6272 | goto QAllEAsOut; | |
6273 | } | |
6274 | memcpy(EAData, temp_ptr, value_len); | |
6275 | goto QAllEAsOut; | |
6276 | } | |
f0d3868b | 6277 | } else { |
31c0519f JL |
6278 | /* account for prefix user. and trailing null */ |
6279 | rc += (5 + 1 + name_len); | |
6280 | if (rc < (int) buf_size) { | |
6281 | memcpy(EAData, "user.", 5); | |
6282 | EAData += 5; | |
6283 | memcpy(EAData, temp_ptr, name_len); | |
6284 | EAData += name_len; | |
6285 | /* null terminate name */ | |
6286 | *EAData = 0; | |
6287 | ++EAData; | |
6288 | } else if (buf_size == 0) { | |
6289 | /* skip copy - calc size only */ | |
6290 | } else { | |
6291 | /* stop before overrun buffer */ | |
6292 | rc = -ERANGE; | |
6293 | break; | |
6294 | } | |
1da177e4 | 6295 | } |
0cd126b5 | 6296 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6297 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6298 | } |
f0d3868b | 6299 | |
31c0519f JL |
6300 | /* didn't find the named attribute */ |
6301 | if (ea_name) | |
6302 | rc = -ENODATA; | |
6303 | ||
f0d3868b | 6304 | QAllEAsOut: |
0d817bc0 | 6305 | cifs_buf_release(pSMB); |
1da177e4 LT |
6306 | if (rc == -EAGAIN) |
6307 | goto QAllEAsRetry; | |
6308 | ||
6309 | return (ssize_t)rc; | |
6310 | } | |
6311 | ||
1da177e4 | 6312 | int |
6d5786a3 PS |
6313 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6314 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 6315 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 6316 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6317 | { |
6318 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6319 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6320 | struct fealist *parm_data; | |
6321 | int name_len; | |
6322 | int rc = 0; | |
6323 | int bytes_returned = 0; | |
6324 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 6325 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 6326 | |
f96637be | 6327 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6328 | SetEARetry: |
6329 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6330 | (void **) &pSMBr); | |
6331 | if (rc) | |
6332 | return rc; | |
6333 | ||
6334 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6335 | name_len = | |
acbbb76a SF |
6336 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6337 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6338 | name_len++; /* trailing null */ |
6339 | name_len *= 2; | |
50c2f753 | 6340 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6341 | name_len = strnlen(fileName, PATH_MAX); |
6342 | name_len++; /* trailing null */ | |
6343 | strncpy(pSMB->FileName, fileName, name_len); | |
6344 | } | |
6345 | ||
6346 | params = 6 + name_len; | |
6347 | ||
6348 | /* done calculating parms using name_len of file name, | |
6349 | now use name_len to calculate length of ea name | |
6350 | we are going to create in the inode xattrs */ | |
790fe579 | 6351 | if (ea_name == NULL) |
1da177e4 LT |
6352 | name_len = 0; |
6353 | else | |
50c2f753 | 6354 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6355 | |
dae5dbdb | 6356 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6357 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6358 | /* BB find max SMB PDU from sess */ |
6359 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6360 | pSMB->MaxSetupCount = 0; |
6361 | pSMB->Reserved = 0; | |
6362 | pSMB->Flags = 0; | |
6363 | pSMB->Timeout = 0; | |
6364 | pSMB->Reserved2 = 0; | |
6365 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6366 | InformationLevel) - 4; |
1da177e4 LT |
6367 | offset = param_offset + params; |
6368 | pSMB->InformationLevel = | |
6369 | cpu_to_le16(SMB_SET_FILE_EA); | |
6370 | ||
ade7db99 | 6371 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
6372 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
6373 | pSMB->DataOffset = cpu_to_le16(offset); | |
6374 | pSMB->SetupCount = 1; | |
6375 | pSMB->Reserved3 = 0; | |
6376 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6377 | byte_count = 3 /* pad */ + params + count; | |
6378 | pSMB->DataCount = cpu_to_le16(count); | |
6379 | parm_data->list_len = cpu_to_le32(count); | |
6380 | parm_data->list[0].EA_flags = 0; | |
6381 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6382 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6383 | /* EA names are always ASCII */ |
790fe579 | 6384 | if (ea_name) |
50c2f753 | 6385 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6386 | parm_data->list[0].name[name_len] = 0; |
6387 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6388 | /* caller ensures that ea_value_len is less than 64K but | |
6389 | we need to ensure that it fits within the smb */ | |
6390 | ||
50c2f753 SF |
6391 | /*BB add length check to see if it would fit in |
6392 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6393 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6394 | if (ea_value_len) | |
50c2f753 SF |
6395 | memcpy(parm_data->list[0].name+name_len+1, |
6396 | ea_value, ea_value_len); | |
1da177e4 LT |
6397 | |
6398 | pSMB->TotalDataCount = pSMB->DataCount; | |
6399 | pSMB->ParameterCount = cpu_to_le16(params); | |
6400 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6401 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6402 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6403 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6404 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6405 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6406 | if (rc) |
f96637be | 6407 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6408 | |
6409 | cifs_buf_release(pSMB); | |
6410 | ||
6411 | if (rc == -EAGAIN) | |
6412 | goto SetEARetry; | |
6413 | ||
6414 | return rc; | |
6415 | } | |
1da177e4 | 6416 | #endif |
0eff0e26 SF |
6417 | |
6418 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6419 | /* | |
6420 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6421 | * to allow network clients (such as Windows) to display updated | |
6422 | * lists of files in directory listings automatically when | |
6423 | * files are added by one user when another user has the | |
6424 | * same directory open on their desktop. The Linux cifs kernel | |
6425 | * client hooked into the kernel side of this interface for | |
6426 | * the same reason, but ironically when the VFS moved from | |
6427 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6428 | * network file system clients (the most obvious use case | |
6429 | * for notify interfaces is when multiple users can update | |
6430 | * the contents of the same directory - exactly what network | |
6431 | * file systems can do) although the server (Samba) could | |
6432 | * still use it. For the short term we leave the worker | |
6433 | * function ifdeffed out (below) until inotify is fixed | |
6434 | * in the VFS to make it easier to plug in network file | |
6435 | * system clients. If inotify turns out to be permanently | |
6436 | * incompatible for network fs clients, we could instead simply | |
6437 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6438 | */ | |
6d5786a3 | 6439 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6440 | const int notify_subdirs, const __u16 netfid, |
6441 | __u32 filter, struct file *pfile, int multishot, | |
6442 | const struct nls_table *nls_codepage) | |
6443 | { | |
6444 | int rc = 0; | |
6445 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6446 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6447 | struct dir_notify_req *dnotify_req; | |
6448 | int bytes_returned; | |
6449 | ||
f96637be | 6450 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6451 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6452 | (void **) &pSMBr); | |
6453 | if (rc) | |
6454 | return rc; | |
6455 | ||
6456 | pSMB->TotalParameterCount = 0 ; | |
6457 | pSMB->TotalDataCount = 0; | |
6458 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6459 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6460 | pSMB->MaxSetupCount = 4; |
6461 | pSMB->Reserved = 0; | |
6462 | pSMB->ParameterOffset = 0; | |
6463 | pSMB->DataCount = 0; | |
6464 | pSMB->DataOffset = 0; | |
6465 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6466 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6467 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6468 | if (notify_subdirs) | |
6469 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6470 | pSMB->Reserved2 = 0; | |
6471 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6472 | pSMB->Fid = netfid; /* file handle always le */ | |
6473 | pSMB->ByteCount = 0; | |
6474 | ||
6475 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6476 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6477 | CIFS_ASYNC_OP); | |
6478 | if (rc) { | |
f96637be | 6479 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6480 | } else { |
6481 | /* Add file to outstanding requests */ | |
6482 | /* BB change to kmem cache alloc */ | |
6483 | dnotify_req = kmalloc( | |
6484 | sizeof(struct dir_notify_req), | |
6485 | GFP_KERNEL); | |
6486 | if (dnotify_req) { | |
6487 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6488 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6489 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6490 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6491 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6492 | dnotify_req->netfid = netfid; | |
6493 | dnotify_req->pfile = pfile; | |
6494 | dnotify_req->filter = filter; | |
6495 | dnotify_req->multishot = multishot; | |
6496 | spin_lock(&GlobalMid_Lock); | |
6497 | list_add_tail(&dnotify_req->lhead, | |
6498 | &GlobalDnotifyReqList); | |
6499 | spin_unlock(&GlobalMid_Lock); | |
6500 | } else | |
6501 | rc = -ENOMEM; | |
6502 | } | |
6503 | cifs_buf_release(pSMB); | |
6504 | return rc; | |
6505 | } | |
6506 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |