Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
aa24d1e9 PS |
89 | /* |
90 | * Mark as invalid, all open files on tree connections since they | |
91 | * were closed when session to server was lost. | |
92 | */ | |
93 | void | |
94 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 | 99 | |
aa24d1e9 | 100 | /* list all files open on tree connection and mark them invalid */ |
4477288a | 101 | spin_lock(&cifs_file_list_lock); |
aa24d1e9 | 102 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 103 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 104 | open_file->invalidHandle = true; |
3bc303c2 | 105 | open_file->oplock_break_cancelled = true; |
1da177e4 | 106 | } |
4477288a | 107 | spin_unlock(&cifs_file_list_lock); |
aa24d1e9 PS |
108 | /* |
109 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
110 | * to this tcon. | |
111 | */ | |
1da177e4 LT |
112 | } |
113 | ||
9162ab20 JL |
114 | /* reconnect the socket, tcon, and smb session if needed */ |
115 | static int | |
96daf2b0 | 116 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 117 | { |
c4a5534a | 118 | int rc; |
96daf2b0 | 119 | struct cifs_ses *ses; |
9162ab20 JL |
120 | struct TCP_Server_Info *server; |
121 | struct nls_table *nls_codepage; | |
122 | ||
123 | /* | |
124 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
125 | * tcp and smb session status done differently for those three - in the | |
126 | * calling routine | |
127 | */ | |
128 | if (!tcon) | |
129 | return 0; | |
130 | ||
131 | ses = tcon->ses; | |
132 | server = ses->server; | |
133 | ||
134 | /* | |
135 | * only tree disconnect, open, and write, (and ulogoff which does not | |
136 | * have tcon) are allowed as we start force umount | |
137 | */ | |
138 | if (tcon->tidStatus == CifsExiting) { | |
139 | if (smb_command != SMB_COM_WRITE_ANDX && | |
140 | smb_command != SMB_COM_OPEN_ANDX && | |
141 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
142 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
143 | smb_command); | |
9162ab20 JL |
144 | return -ENODEV; |
145 | } | |
146 | } | |
147 | ||
9162ab20 JL |
148 | /* |
149 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
150 | * greater than cifs socket timeout which is 7 seconds | |
151 | */ | |
152 | while (server->tcpStatus == CifsNeedReconnect) { | |
153 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 154 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 155 | |
fd88ce93 | 156 | /* are we still trying to reconnect? */ |
9162ab20 JL |
157 | if (server->tcpStatus != CifsNeedReconnect) |
158 | break; | |
159 | ||
160 | /* | |
161 | * on "soft" mounts we wait once. Hard mounts keep | |
162 | * retrying until process is killed or server comes | |
163 | * back on-line | |
164 | */ | |
d402539b | 165 | if (!tcon->retry) { |
f96637be | 166 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
167 | return -EHOSTDOWN; |
168 | } | |
169 | } | |
170 | ||
171 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
172 | return 0; | |
173 | ||
174 | nls_codepage = load_nls_default(); | |
175 | ||
176 | /* | |
177 | * need to prevent multiple threads trying to simultaneously | |
178 | * reconnect the same SMB session | |
179 | */ | |
d7b619cf | 180 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
181 | rc = cifs_negotiate_protocol(0, ses); |
182 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
183 | rc = cifs_setup_session(0, ses, nls_codepage); |
184 | ||
185 | /* do we need to reconnect tcon? */ | |
186 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
188 | goto out; |
189 | } | |
190 | ||
aa24d1e9 | 191 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 192 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 193 | mutex_unlock(&ses->session_mutex); |
f96637be | 194 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 JL |
195 | |
196 | if (rc) | |
197 | goto out; | |
198 | ||
199 | /* | |
200 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
201 | * size shrinking | |
202 | */ | |
203 | atomic_inc(&tconInfoReconnectCount); | |
204 | ||
205 | /* tell server Unix caps we support */ | |
206 | if (ses->capabilities & CAP_UNIX) | |
207 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
208 | ||
209 | /* | |
210 | * Removed call to reopen open files here. It is safer (and faster) to | |
211 | * reopen files one at a time as needed in read and write. | |
212 | * | |
213 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
214 | */ | |
215 | ||
216 | out: | |
217 | /* | |
218 | * Check if handle based operation so we know whether we can continue | |
219 | * or not without returning to caller to reset file handle | |
220 | */ | |
221 | switch (smb_command) { | |
222 | case SMB_COM_READ_ANDX: | |
223 | case SMB_COM_WRITE_ANDX: | |
224 | case SMB_COM_CLOSE: | |
225 | case SMB_COM_FIND_CLOSE2: | |
226 | case SMB_COM_LOCKING_ANDX: | |
227 | rc = -EAGAIN; | |
228 | } | |
229 | ||
230 | unload_nls(nls_codepage); | |
231 | return rc; | |
232 | } | |
233 | ||
ad7a2926 SF |
234 | /* Allocate and return pointer to an SMB request buffer, and set basic |
235 | SMB information in the SMB header. If the return code is zero, this | |
236 | function must have filled in request_buf pointer */ | |
1da177e4 | 237 | static int |
96daf2b0 | 238 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 239 | void **request_buf) |
1da177e4 | 240 | { |
f569599a | 241 | int rc; |
1da177e4 | 242 | |
9162ab20 | 243 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 244 | if (rc) |
1da177e4 LT |
245 | return rc; |
246 | ||
247 | *request_buf = cifs_small_buf_get(); | |
248 | if (*request_buf == NULL) { | |
249 | /* BB should we add a retry in here if not a writepage? */ | |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
63135e08 | 253 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 254 | tcon, wct); |
1da177e4 | 255 | |
790fe579 SF |
256 | if (tcon != NULL) |
257 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 258 | |
f569599a | 259 | return 0; |
5815449d SF |
260 | } |
261 | ||
12b3b8ff | 262 | int |
50c2f753 | 263 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 264 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
265 | { |
266 | int rc; | |
50c2f753 | 267 | struct smb_hdr *buffer; |
12b3b8ff | 268 | |
5815449d | 269 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 270 | if (rc) |
12b3b8ff SF |
271 | return rc; |
272 | ||
04fdabe1 | 273 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 274 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
275 | if (ses->capabilities & CAP_UNICODE) |
276 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 277 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
278 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
279 | ||
280 | /* uid, tid can stay at zero as set in header assemble */ | |
281 | ||
50c2f753 | 282 | /* BB add support for turning on the signing when |
12b3b8ff SF |
283 | this function is used after 1st of session setup requests */ |
284 | ||
285 | return rc; | |
286 | } | |
1da177e4 LT |
287 | |
288 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
289 | static int | |
96daf2b0 | 290 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 291 | void **request_buf, void **response_buf) |
1da177e4 | 292 | { |
1da177e4 LT |
293 | *request_buf = cifs_buf_get(); |
294 | if (*request_buf == NULL) { | |
295 | /* BB should we add a retry in here if not a writepage? */ | |
296 | return -ENOMEM; | |
297 | } | |
298 | /* Although the original thought was we needed the response buf for */ | |
299 | /* potential retries of smb operations it turns out we can determine */ | |
300 | /* from the mid flags when the request buffer can be resent without */ | |
301 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 302 | if (response_buf) |
50c2f753 | 303 | *response_buf = *request_buf; |
1da177e4 LT |
304 | |
305 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 306 | wct); |
1da177e4 | 307 | |
790fe579 SF |
308 | if (tcon != NULL) |
309 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 310 | |
f569599a JL |
311 | return 0; |
312 | } | |
313 | ||
314 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
315 | static int | |
96daf2b0 | 316 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
317 | void **request_buf, void **response_buf) |
318 | { | |
319 | int rc; | |
320 | ||
321 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
322 | if (rc) | |
323 | return rc; | |
324 | ||
325 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
326 | } | |
327 | ||
328 | static int | |
96daf2b0 | 329 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
330 | void **request_buf, void **response_buf) |
331 | { | |
332 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
333 | return -EHOSTDOWN; | |
334 | ||
335 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
336 | } |
337 | ||
50c2f753 | 338 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 339 | { |
12df83c9 JL |
340 | unsigned int total_size; |
341 | ||
342 | /* check for plausible wct */ | |
343 | if (pSMB->hdr.WordCount < 10) | |
344 | goto vt2_err; | |
1da177e4 | 345 | |
1da177e4 | 346 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
347 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
348 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
349 | goto vt2_err; | |
350 | ||
12df83c9 JL |
351 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
352 | if (total_size >= 512) | |
353 | goto vt2_err; | |
354 | ||
fd5707e1 JL |
355 | /* check that bcc is at least as big as parms + data, and that it is |
356 | * less than negotiated smb buffer | |
357 | */ | |
12df83c9 JL |
358 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
359 | if (total_size > get_bcc(&pSMB->hdr) || | |
360 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
361 | goto vt2_err; | |
362 | ||
363 | return 0; | |
364 | vt2_err: | |
50c2f753 | 365 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 366 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 367 | return -EINVAL; |
1da177e4 | 368 | } |
690c522f | 369 | |
31d9e2bd | 370 | static int |
3f618223 | 371 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
372 | { |
373 | int rc = 0; | |
374 | u16 count; | |
375 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 376 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
377 | |
378 | count = get_bcc(&pSMBr->hdr); | |
379 | if (count < SMB1_CLIENT_GUID_SIZE) | |
380 | return -EIO; | |
381 | ||
382 | spin_lock(&cifs_tcp_ses_lock); | |
383 | if (server->srv_count > 1) { | |
384 | spin_unlock(&cifs_tcp_ses_lock); | |
385 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
386 | cifs_dbg(FYI, "server UID changed\n"); | |
387 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
388 | } | |
389 | } else { | |
390 | spin_unlock(&cifs_tcp_ses_lock); | |
391 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
392 | } | |
393 | ||
394 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 395 | server->sec_ntlmssp = true; |
31d9e2bd JL |
396 | } else { |
397 | count -= SMB1_CLIENT_GUID_SIZE; | |
398 | rc = decode_negTokenInit( | |
399 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
400 | if (rc != 1) | |
401 | return -EINVAL; | |
31d9e2bd JL |
402 | } |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
9ddec561 | 407 | int |
38d77c50 | 408 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 409 | { |
50285882 JL |
410 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
411 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
412 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
413 | ||
414 | /* | |
415 | * Is signing required by mnt options? If not then check | |
416 | * global_secflags to see if it is there. | |
417 | */ | |
418 | if (!mnt_sign_required) | |
419 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
420 | CIFSSEC_MUST_SIGN); | |
421 | ||
422 | /* | |
423 | * If signing is required then it's automatically enabled too, | |
424 | * otherwise, check to see if the secflags allow it. | |
425 | */ | |
426 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
427 | (global_secflags & CIFSSEC_MAY_SIGN); | |
428 | ||
429 | /* If server requires signing, does client allow it? */ | |
430 | if (srv_sign_required) { | |
431 | if (!mnt_sign_enabled) { | |
432 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
433 | return -ENOTSUPP; | |
9ddec561 | 434 | } |
38d77c50 JL |
435 | server->sign = true; |
436 | } | |
437 | ||
438 | /* If client requires signing, does server allow it? */ | |
439 | if (mnt_sign_required) { | |
440 | if (!srv_sign_enabled) { | |
441 | cifs_dbg(VFS, "Server does not support signing!"); | |
442 | return -ENOTSUPP; | |
443 | } | |
444 | server->sign = true; | |
9ddec561 JL |
445 | } |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
2190eca1 JL |
450 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
451 | static int | |
3f618223 | 452 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
453 | { |
454 | __s16 tmp; | |
455 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
456 | ||
457 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
458 | return -EOPNOTSUPP; | |
459 | ||
2190eca1 JL |
460 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
461 | server->maxReq = min_t(unsigned int, | |
462 | le16_to_cpu(rsp->MaxMpxCount), | |
463 | cifs_max_pending); | |
464 | set_credits(server, server->maxReq); | |
465 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
2190eca1 JL |
466 | /* even though we do not use raw we might as well set this |
467 | accurately, in case we ever find a need for it */ | |
468 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
469 | server->max_rw = 0xFF00; | |
470 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
471 | } else { | |
472 | server->max_rw = 0;/* do not need to use raw anyway */ | |
473 | server->capabilities = CAP_MPX_MODE; | |
474 | } | |
475 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
476 | if (tmp == -1) { | |
477 | /* OS/2 often does not set timezone therefore | |
478 | * we must use server time to calc time zone. | |
479 | * Could deviate slightly from the right zone. | |
480 | * Smallest defined timezone difference is 15 minutes | |
481 | * (i.e. Nepal). Rounding up/down is done to match | |
482 | * this requirement. | |
483 | */ | |
484 | int val, seconds, remain, result; | |
485 | struct timespec ts, utc; | |
486 | utc = CURRENT_TIME; | |
487 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, | |
488 | rsp->SrvTime.Time, 0); | |
489 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
490 | (int)ts.tv_sec, (int)utc.tv_sec, | |
491 | (int)(utc.tv_sec - ts.tv_sec)); | |
492 | val = (int)(utc.tv_sec - ts.tv_sec); | |
493 | seconds = abs(val); | |
494 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
495 | remain = seconds % MIN_TZ_ADJ; | |
496 | if (remain >= (MIN_TZ_ADJ / 2)) | |
497 | result += MIN_TZ_ADJ; | |
498 | if (val < 0) | |
499 | result = -result; | |
500 | server->timeAdj = result; | |
501 | } else { | |
502 | server->timeAdj = (int)tmp; | |
503 | server->timeAdj *= 60; /* also in seconds */ | |
504 | } | |
505 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
506 | ||
507 | ||
508 | /* BB get server time for time conversions and add | |
509 | code to use it and timezone since this is not UTC */ | |
510 | ||
511 | if (rsp->EncryptionKeyLength == | |
512 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
513 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
514 | CIFS_CRYPTO_KEY_SIZE); | |
515 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
516 | return -EIO; /* need cryptkey unless plain text */ | |
517 | } | |
518 | ||
519 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
520 | return 0; | |
521 | } | |
522 | #else | |
523 | static inline int | |
3f618223 | 524 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
525 | { |
526 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
527 | return -EOPNOTSUPP; | |
528 | } | |
529 | #endif | |
530 | ||
9193400b | 531 | static bool |
3f618223 | 532 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 533 | { |
3f618223 JL |
534 | switch (sectype) { |
535 | case RawNTLMSSP: | |
536 | case Kerberos: | |
9193400b | 537 | return true; |
3f618223 JL |
538 | case Unspecified: |
539 | if (global_secflags & | |
540 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
541 | return true; | |
542 | /* Fallthrough */ | |
543 | default: | |
544 | return false; | |
545 | } | |
9193400b JL |
546 | } |
547 | ||
1da177e4 | 548 | int |
286170aa | 549 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
550 | { |
551 | NEGOTIATE_REQ *pSMB; | |
552 | NEGOTIATE_RSP *pSMBr; | |
553 | int rc = 0; | |
554 | int bytes_returned; | |
3979877e | 555 | int i; |
3534b850 | 556 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
557 | u16 count; |
558 | ||
3534b850 JL |
559 | if (!server) { |
560 | WARN(1, "%s: server is NULL!\n", __func__); | |
561 | return -EIO; | |
1da177e4 | 562 | } |
3534b850 | 563 | |
1da177e4 LT |
564 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
565 | (void **) &pSMB, (void **) &pSMBr); | |
566 | if (rc) | |
567 | return rc; | |
750d1151 | 568 | |
88257360 | 569 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 570 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 571 | |
3f618223 | 572 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 573 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
574 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
575 | } | |
50c2f753 | 576 | |
3979877e | 577 | count = 0; |
50c2f753 | 578 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
579 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
580 | count += strlen(protocols[i].name) + 1; | |
581 | /* null at end of source and target buffers anyway */ | |
582 | } | |
be8e3b00 | 583 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
584 | pSMB->ByteCount = cpu_to_le16(count); |
585 | ||
586 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
587 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 588 | if (rc != 0) |
254e55ed SF |
589 | goto neg_err_exit; |
590 | ||
9bf67e51 | 591 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 592 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 593 | /* Check wct = 1 error case */ |
9bf67e51 | 594 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 595 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 596 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
597 | could not negotiate a common dialect */ |
598 | rc = -EOPNOTSUPP; | |
599 | goto neg_err_exit; | |
790fe579 | 600 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 601 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 602 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 603 | goto signing_check; |
790fe579 | 604 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
605 | /* unknown wct */ |
606 | rc = -EOPNOTSUPP; | |
607 | goto neg_err_exit; | |
608 | } | |
2190eca1 JL |
609 | /* else wct == 17, NTLM or better */ |
610 | ||
96daf2b0 SF |
611 | server->sec_mode = pSMBr->SecurityMode; |
612 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 613 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 614 | |
254e55ed SF |
615 | /* one byte, so no need to convert this or EncryptionKeyLen from |
616 | little endian */ | |
10b9b98e PS |
617 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
618 | cifs_max_pending); | |
45275789 | 619 | set_credits(server, server->maxReq); |
254e55ed | 620 | /* probably no need to store and check maxvcs */ |
c974befa | 621 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 622 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 623 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 624 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
625 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
626 | server->timeAdj *= 60; | |
31d9e2bd | 627 | |
e598d1d8 JL |
628 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
629 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 630 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 631 | CIFS_CRYPTO_KEY_SIZE); |
e598d1d8 | 632 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
07cc6cf9 | 633 | server->capabilities & CAP_EXTENDED_SECURITY) && |
e598d1d8 JL |
634 | (pSMBr->EncryptionKeyLength == 0)) { |
635 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; | |
3f618223 | 636 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 637 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 638 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
639 | } else { |
640 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 641 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 642 | } |
254e55ed SF |
643 | |
644 | signing_check: | |
9ddec561 | 645 | if (!rc) |
38d77c50 | 646 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 647 | neg_err_exit: |
4a6d87f1 | 648 | cifs_buf_release(pSMB); |
254e55ed | 649 | |
f96637be | 650 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
651 | return rc; |
652 | } | |
653 | ||
654 | int | |
2e6e02ab | 655 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
656 | { |
657 | struct smb_hdr *smb_buffer; | |
1da177e4 | 658 | int rc = 0; |
1da177e4 | 659 | |
f96637be | 660 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 661 | |
f1987b44 JL |
662 | /* BB: do we need to check this? These should never be NULL. */ |
663 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
664 | return -EIO; | |
1da177e4 | 665 | |
f1987b44 JL |
666 | /* |
667 | * No need to return error on this operation if tid invalidated and | |
668 | * closed on server already e.g. due to tcp session crashing. Also, | |
669 | * the tcon is no longer on the list, so no need to take lock before | |
670 | * checking this. | |
671 | */ | |
268875b9 | 672 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 673 | return 0; |
1da177e4 | 674 | |
50c2f753 | 675 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 676 | (void **)&smb_buffer); |
f1987b44 | 677 | if (rc) |
1da177e4 | 678 | return rc; |
133672ef | 679 | |
792af7b0 | 680 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 681 | if (rc) |
f96637be | 682 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 683 | |
50c2f753 | 684 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 685 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
686 | if (rc == -EAGAIN) |
687 | rc = 0; | |
688 | ||
689 | return rc; | |
690 | } | |
691 | ||
766fdbb5 JL |
692 | /* |
693 | * This is a no-op for now. We're not really interested in the reply, but | |
694 | * rather in the fact that the server sent one and that server->lstrp | |
695 | * gets updated. | |
696 | * | |
697 | * FIXME: maybe we should consider checking that the reply matches request? | |
698 | */ | |
699 | static void | |
700 | cifs_echo_callback(struct mid_q_entry *mid) | |
701 | { | |
702 | struct TCP_Server_Info *server = mid->callback_data; | |
703 | ||
704 | DeleteMidQEntry(mid); | |
a891f0f8 | 705 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
706 | } |
707 | ||
708 | int | |
709 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
710 | { | |
711 | ECHO_REQ *smb; | |
712 | int rc = 0; | |
fcc31cb6 | 713 | struct kvec iov; |
fec344e3 JL |
714 | struct smb_rqst rqst = { .rq_iov = &iov, |
715 | .rq_nvec = 1 }; | |
766fdbb5 | 716 | |
f96637be | 717 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
718 | |
719 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
720 | if (rc) | |
721 | return rc; | |
722 | ||
723 | /* set up echo request */ | |
5443d130 | 724 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
725 | smb->hdr.WordCount = 1; |
726 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 727 | put_bcc(1, &smb->hdr); |
766fdbb5 | 728 | smb->Data[0] = 'a'; |
be8e3b00 | 729 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
730 | iov.iov_base = smb; |
731 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 732 | |
fec344e3 | 733 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f8 | 734 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 735 | if (rc) |
f96637be | 736 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
737 | |
738 | cifs_small_buf_release(smb); | |
739 | ||
740 | return rc; | |
741 | } | |
742 | ||
1da177e4 | 743 | int |
58c45c58 | 744 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 745 | { |
1da177e4 LT |
746 | LOGOFF_ANDX_REQ *pSMB; |
747 | int rc = 0; | |
1da177e4 | 748 | |
f96637be | 749 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 750 | |
14fbf50d JL |
751 | /* |
752 | * BB: do we need to check validity of ses and server? They should | |
753 | * always be valid since we have an active reference. If not, that | |
754 | * should probably be a BUG() | |
755 | */ | |
756 | if (!ses || !ses->server) | |
3b795210 SF |
757 | return -EIO; |
758 | ||
d7b619cf | 759 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
760 | if (ses->need_reconnect) |
761 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
762 | already closed due to reconnect */ | |
1da177e4 LT |
763 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
764 | if (rc) { | |
d7b619cf | 765 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
766 | return rc; |
767 | } | |
768 | ||
88257360 | 769 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 770 | |
38d77c50 JL |
771 | if (ses->server->sign) |
772 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
773 | |
774 | pSMB->hdr.Uid = ses->Suid; | |
775 | ||
776 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 777 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 778 | session_already_dead: |
d7b619cf | 779 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
780 | |
781 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 782 | since server closed smb session, no sense reporting |
1da177e4 LT |
783 | error */ |
784 | if (rc == -EAGAIN) | |
785 | rc = 0; | |
786 | return rc; | |
787 | } | |
788 | ||
2d785a50 | 789 | int |
6d5786a3 PS |
790 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
791 | const char *fileName, __u16 type, | |
792 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
793 | { |
794 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
795 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
796 | struct unlink_psx_rq *pRqD; | |
797 | int name_len; | |
798 | int rc = 0; | |
799 | int bytes_returned = 0; | |
800 | __u16 params, param_offset, offset, byte_count; | |
801 | ||
f96637be | 802 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
803 | PsxDelete: |
804 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
805 | (void **) &pSMBr); | |
806 | if (rc) | |
807 | return rc; | |
808 | ||
809 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
810 | name_len = | |
acbbb76a SF |
811 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
812 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
813 | name_len++; /* trailing null */ |
814 | name_len *= 2; | |
815 | } else { /* BB add path length overrun check */ | |
816 | name_len = strnlen(fileName, PATH_MAX); | |
817 | name_len++; /* trailing null */ | |
818 | strncpy(pSMB->FileName, fileName, name_len); | |
819 | } | |
820 | ||
821 | params = 6 + name_len; | |
822 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
823 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
824 | pSMB->MaxSetupCount = 0; | |
825 | pSMB->Reserved = 0; | |
826 | pSMB->Flags = 0; | |
827 | pSMB->Timeout = 0; | |
828 | pSMB->Reserved2 = 0; | |
829 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
830 | InformationLevel) - 4; | |
831 | offset = param_offset + params; | |
832 | ||
833 | /* Setup pointer to Request Data (inode type) */ | |
834 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
835 | pRqD->type = cpu_to_le16(type); | |
836 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
837 | pSMB->DataOffset = cpu_to_le16(offset); | |
838 | pSMB->SetupCount = 1; | |
839 | pSMB->Reserved3 = 0; | |
840 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
841 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
842 | ||
843 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
844 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
845 | pSMB->ParameterCount = cpu_to_le16(params); | |
846 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
847 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
848 | pSMB->Reserved4 = 0; | |
be8e3b00 | 849 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
850 | pSMB->ByteCount = cpu_to_le16(byte_count); |
851 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
852 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 853 | if (rc) |
f96637be | 854 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
855 | cifs_buf_release(pSMB); |
856 | ||
44c58186 | 857 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
858 | |
859 | if (rc == -EAGAIN) | |
860 | goto PsxDelete; | |
861 | ||
862 | return rc; | |
863 | } | |
864 | ||
1da177e4 | 865 | int |
ed6875e0 PS |
866 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
867 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
868 | { |
869 | DELETE_FILE_REQ *pSMB = NULL; | |
870 | DELETE_FILE_RSP *pSMBr = NULL; | |
871 | int rc = 0; | |
872 | int bytes_returned; | |
873 | int name_len; | |
ed6875e0 | 874 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 LT |
875 | |
876 | DelFileRetry: | |
877 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
878 | (void **) &pSMBr); | |
879 | if (rc) | |
880 | return rc; | |
881 | ||
882 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
883 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
884 | PATH_MAX, cifs_sb->local_nls, | |
885 | remap); | |
1da177e4 LT |
886 | name_len++; /* trailing null */ |
887 | name_len *= 2; | |
09d1db5c | 888 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 889 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 890 | name_len++; /* trailing null */ |
ed6875e0 | 891 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
892 | } |
893 | pSMB->SearchAttributes = | |
894 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
895 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 896 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
897 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
898 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
899 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 900 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 901 | if (rc) |
f96637be | 902 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
903 | |
904 | cifs_buf_release(pSMB); | |
905 | if (rc == -EAGAIN) | |
906 | goto DelFileRetry; | |
907 | ||
908 | return rc; | |
909 | } | |
910 | ||
911 | int | |
f958ca5d PS |
912 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
913 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
914 | { |
915 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
916 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
917 | int rc = 0; | |
918 | int bytes_returned; | |
919 | int name_len; | |
f958ca5d | 920 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 921 | |
f96637be | 922 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
923 | RmDirRetry: |
924 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
925 | (void **) &pSMBr); | |
926 | if (rc) | |
927 | return rc; | |
928 | ||
929 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
930 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
931 | PATH_MAX, cifs_sb->local_nls, | |
932 | remap); | |
1da177e4 LT |
933 | name_len++; /* trailing null */ |
934 | name_len *= 2; | |
09d1db5c | 935 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 936 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 937 | name_len++; /* trailing null */ |
f958ca5d | 938 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
939 | } |
940 | ||
941 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 942 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
943 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
944 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
945 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 946 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 947 | if (rc) |
f96637be | 948 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
949 | |
950 | cifs_buf_release(pSMB); | |
951 | if (rc == -EAGAIN) | |
952 | goto RmDirRetry; | |
953 | return rc; | |
954 | } | |
955 | ||
956 | int | |
f436720e PS |
957 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
958 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
959 | { |
960 | int rc = 0; | |
961 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
962 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
963 | int bytes_returned; | |
964 | int name_len; | |
f436720e | 965 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 966 | |
f96637be | 967 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
968 | MkDirRetry: |
969 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
970 | (void **) &pSMBr); | |
971 | if (rc) | |
972 | return rc; | |
973 | ||
974 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 975 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
976 | PATH_MAX, cifs_sb->local_nls, |
977 | remap); | |
1da177e4 LT |
978 | name_len++; /* trailing null */ |
979 | name_len *= 2; | |
09d1db5c | 980 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
981 | name_len = strnlen(name, PATH_MAX); |
982 | name_len++; /* trailing null */ | |
983 | strncpy(pSMB->DirName, name, name_len); | |
984 | } | |
985 | ||
986 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 987 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
988 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
989 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
990 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 991 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 992 | if (rc) |
f96637be | 993 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 994 | |
1da177e4 LT |
995 | cifs_buf_release(pSMB); |
996 | if (rc == -EAGAIN) | |
997 | goto MkDirRetry; | |
998 | return rc; | |
999 | } | |
1000 | ||
2dd29d31 | 1001 | int |
6d5786a3 PS |
1002 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1003 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1004 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1005 | const char *name, const struct nls_table *nls_codepage, | |
1006 | int remap) | |
2dd29d31 SF |
1007 | { |
1008 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1009 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1010 | int name_len; | |
1011 | int rc = 0; | |
1012 | int bytes_returned = 0; | |
2dd29d31 | 1013 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1014 | OPEN_PSX_REQ *pdata; |
1015 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1016 | |
f96637be | 1017 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1018 | PsxCreat: |
1019 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1020 | (void **) &pSMBr); | |
1021 | if (rc) | |
1022 | return rc; | |
1023 | ||
1024 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1025 | name_len = | |
acbbb76a SF |
1026 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1027 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1028 | name_len++; /* trailing null */ |
1029 | name_len *= 2; | |
1030 | } else { /* BB improve the check for buffer overruns BB */ | |
1031 | name_len = strnlen(name, PATH_MAX); | |
1032 | name_len++; /* trailing null */ | |
1033 | strncpy(pSMB->FileName, name, name_len); | |
1034 | } | |
1035 | ||
1036 | params = 6 + name_len; | |
1037 | count = sizeof(OPEN_PSX_REQ); | |
1038 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1039 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1040 | pSMB->MaxSetupCount = 0; | |
1041 | pSMB->Reserved = 0; | |
1042 | pSMB->Flags = 0; | |
1043 | pSMB->Timeout = 0; | |
1044 | pSMB->Reserved2 = 0; | |
1045 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1046 | InformationLevel) - 4; |
2dd29d31 | 1047 | offset = param_offset + params; |
2dd29d31 | 1048 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1049 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1050 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1051 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1052 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1053 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1054 | pSMB->DataOffset = cpu_to_le16(offset); | |
1055 | pSMB->SetupCount = 1; | |
1056 | pSMB->Reserved3 = 0; | |
1057 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1058 | byte_count = 3 /* pad */ + params + count; | |
1059 | ||
1060 | pSMB->DataCount = cpu_to_le16(count); | |
1061 | pSMB->ParameterCount = cpu_to_le16(params); | |
1062 | pSMB->TotalDataCount = pSMB->DataCount; | |
1063 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1064 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1065 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1066 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1067 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1068 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1069 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1070 | if (rc) { | |
f96637be | 1071 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1072 | goto psx_create_err; |
1073 | } | |
1074 | ||
f96637be | 1075 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1076 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1077 | ||
820a803f | 1078 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1079 | rc = -EIO; /* bad smb */ |
1080 | goto psx_create_err; | |
1081 | } | |
1082 | ||
1083 | /* copy return information to pRetData */ | |
50c2f753 | 1084 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1085 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1086 | |
2dd29d31 | 1087 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1088 | if (netfid) |
2dd29d31 SF |
1089 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1090 | /* Let caller know file was created so we can set the mode. */ | |
1091 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1092 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1093 | *pOplock |= CIFS_CREATE_ACTION; |
1094 | /* check to make sure response data is there */ | |
8f2376ad CG |
1095 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1096 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1097 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1098 | } else { |
820a803f | 1099 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1100 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1101 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1102 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1103 | goto psx_create_err; |
1104 | } | |
50c2f753 | 1105 | memcpy((char *) pRetData, |
cbac3cba | 1106 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1107 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1108 | } |
2dd29d31 SF |
1109 | |
1110 | psx_create_err: | |
1111 | cifs_buf_release(pSMB); | |
1112 | ||
65bc98b0 | 1113 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1114 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1115 | else |
44c58186 | 1116 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1117 | |
1118 | if (rc == -EAGAIN) | |
1119 | goto PsxCreat; | |
1120 | ||
50c2f753 | 1121 | return rc; |
2dd29d31 SF |
1122 | } |
1123 | ||
a9d02ad4 SF |
1124 | static __u16 convert_disposition(int disposition) |
1125 | { | |
1126 | __u16 ofun = 0; | |
1127 | ||
1128 | switch (disposition) { | |
1129 | case FILE_SUPERSEDE: | |
1130 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1131 | break; | |
1132 | case FILE_OPEN: | |
1133 | ofun = SMBOPEN_OAPPEND; | |
1134 | break; | |
1135 | case FILE_CREATE: | |
1136 | ofun = SMBOPEN_OCREATE; | |
1137 | break; | |
1138 | case FILE_OPEN_IF: | |
1139 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1140 | break; | |
1141 | case FILE_OVERWRITE: | |
1142 | ofun = SMBOPEN_OTRUNC; | |
1143 | break; | |
1144 | case FILE_OVERWRITE_IF: | |
1145 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | default: | |
f96637be | 1148 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1149 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1150 | } | |
1151 | return ofun; | |
1152 | } | |
1153 | ||
35fc37d5 JL |
1154 | static int |
1155 | access_flags_to_smbopen_mode(const int access_flags) | |
1156 | { | |
1157 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1158 | ||
1159 | if (masked_flags == GENERIC_READ) | |
1160 | return SMBOPEN_READ; | |
1161 | else if (masked_flags == GENERIC_WRITE) | |
1162 | return SMBOPEN_WRITE; | |
1163 | ||
1164 | /* just go for read/write */ | |
1165 | return SMBOPEN_READWRITE; | |
1166 | } | |
1167 | ||
a9d02ad4 | 1168 | int |
6d5786a3 | 1169 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1170 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1171 | const int access_flags, const int create_options, __u16 *netfid, |
1172 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1173 | const struct nls_table *nls_codepage, int remap) |
1174 | { | |
1175 | int rc = -EACCES; | |
1176 | OPENX_REQ *pSMB = NULL; | |
1177 | OPENX_RSP *pSMBr = NULL; | |
1178 | int bytes_returned; | |
1179 | int name_len; | |
1180 | __u16 count; | |
1181 | ||
1182 | OldOpenRetry: | |
1183 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1184 | (void **) &pSMBr); | |
1185 | if (rc) | |
1186 | return rc; | |
1187 | ||
1188 | pSMB->AndXCommand = 0xFF; /* none */ | |
1189 | ||
1190 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1191 | count = 1; /* account for one byte pad to word boundary */ | |
1192 | name_len = | |
acbbb76a SF |
1193 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1194 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1195 | name_len++; /* trailing null */ |
1196 | name_len *= 2; | |
1197 | } else { /* BB improve check for buffer overruns BB */ | |
1198 | count = 0; /* no pad */ | |
1199 | name_len = strnlen(fileName, PATH_MAX); | |
1200 | name_len++; /* trailing null */ | |
1201 | strncpy(pSMB->fileName, fileName, name_len); | |
1202 | } | |
1203 | if (*pOplock & REQ_OPLOCK) | |
1204 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1205 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1206 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1207 | |
a9d02ad4 | 1208 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1209 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1210 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1211 | /* set file as system file if special file such | |
1212 | as fifo and server expecting SFU style and | |
1213 | no Unix extensions */ | |
1214 | ||
790fe579 SF |
1215 | if (create_options & CREATE_OPTION_SPECIAL) |
1216 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1217 | else /* BB FIXME BB */ |
1218 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1219 | |
67750fb9 JL |
1220 | if (create_options & CREATE_OPTION_READONLY) |
1221 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1222 | |
1223 | /* BB FIXME BB */ | |
50c2f753 SF |
1224 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1225 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1226 | /* BB FIXME END BB */ |
3e87d803 SF |
1227 | |
1228 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1229 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1230 | count += name_len; |
be8e3b00 | 1231 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1232 | |
1233 | pSMB->ByteCount = cpu_to_le16(count); | |
1234 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1235 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1236 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1237 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1238 | if (rc) { |
f96637be | 1239 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1240 | } else { |
1241 | /* BB verify if wct == 15 */ | |
1242 | ||
582d21e5 | 1243 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1244 | |
1245 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1246 | /* Let caller know file was created so we can set the mode. */ | |
1247 | /* Do we care about the CreateAction in any other cases? */ | |
1248 | /* BB FIXME BB */ | |
790fe579 | 1249 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1250 | *pOplock |= CIFS_CREATE_ACTION; */ |
1251 | /* BB FIXME END */ | |
1252 | ||
790fe579 | 1253 | if (pfile_info) { |
a9d02ad4 SF |
1254 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1255 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1256 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1257 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1258 | pfile_info->Attributes = |
50c2f753 | 1259 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1260 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1261 | pfile_info->AllocationSize = |
1262 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1263 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1264 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1265 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1266 | } |
1267 | } | |
1268 | ||
1269 | cifs_buf_release(pSMB); | |
1270 | if (rc == -EAGAIN) | |
1271 | goto OldOpenRetry; | |
1272 | return rc; | |
1273 | } | |
1274 | ||
1da177e4 | 1275 | int |
6d5786a3 | 1276 | CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 1277 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1278 | const int access_flags, const int create_options, __u16 *netfid, |
1279 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1280 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1281 | { |
1282 | int rc = -EACCES; | |
1283 | OPEN_REQ *pSMB = NULL; | |
1284 | OPEN_RSP *pSMBr = NULL; | |
1285 | int bytes_returned; | |
1286 | int name_len; | |
1287 | __u16 count; | |
1288 | ||
1289 | openRetry: | |
1290 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1291 | (void **) &pSMBr); | |
1292 | if (rc) | |
1293 | return rc; | |
1294 | ||
1295 | pSMB->AndXCommand = 0xFF; /* none */ | |
1296 | ||
1297 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1298 | count = 1; /* account for one byte pad to word boundary */ | |
1299 | name_len = | |
acbbb76a SF |
1300 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1301 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1302 | name_len++; /* trailing null */ |
1303 | name_len *= 2; | |
1304 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1305 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1306 | count = 0; /* no pad */ |
1307 | name_len = strnlen(fileName, PATH_MAX); | |
1308 | name_len++; /* trailing null */ | |
1309 | pSMB->NameLength = cpu_to_le16(name_len); | |
1310 | strncpy(pSMB->fileName, fileName, name_len); | |
1311 | } | |
1312 | if (*pOplock & REQ_OPLOCK) | |
1313 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1314 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1315 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1316 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1317 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1318 | /* set file as system file if special file such |
1319 | as fifo and server expecting SFU style and | |
1320 | no Unix extensions */ | |
790fe579 | 1321 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1322 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1323 | else | |
1324 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1325 | |
1da177e4 LT |
1326 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1327 | /* but it helps speed up case sensitive checks for other | |
1328 | servers such as Samba */ | |
1329 | if (tcon->ses->capabilities & CAP_UNIX) | |
1330 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1331 | ||
67750fb9 JL |
1332 | if (create_options & CREATE_OPTION_READONLY) |
1333 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1334 | ||
1da177e4 LT |
1335 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1336 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1337 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1338 | /* BB Expirement with various impersonation levels and verify */ |
1339 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1340 | pSMB->SecurityFlags = |
1341 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1342 | ||
1343 | count += name_len; | |
be8e3b00 | 1344 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1345 | |
1346 | pSMB->ByteCount = cpu_to_le16(count); | |
1347 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1348 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1349 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1350 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1351 | if (rc) { |
f96637be | 1352 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
1da177e4 | 1353 | } else { |
09d1db5c | 1354 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1355 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1356 | /* Let caller know file was created so we can set the mode. */ | |
1357 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1358 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1359 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1360 | if (pfile_info) { |
61e74801 SF |
1361 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1362 | 36 /* CreationTime to Attributes */); | |
1363 | /* the file_info buf is endian converted by caller */ | |
1364 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1365 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1366 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1367 | pfile_info->DeletePending = 0; | |
1da177e4 | 1368 | } |
1da177e4 | 1369 | } |
a5a2b489 | 1370 | |
1da177e4 LT |
1371 | cifs_buf_release(pSMB); |
1372 | if (rc == -EAGAIN) | |
1373 | goto openRetry; | |
1374 | return rc; | |
1375 | } | |
1376 | ||
e28bc5b1 JL |
1377 | /* |
1378 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1379 | * current bigbuf. | |
1380 | */ | |
1381 | static int | |
1382 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1383 | { | |
5ffef7bf | 1384 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1385 | int remaining = rfclen + 4 - server->total_read; |
1386 | struct cifs_readdata *rdata = mid->callback_data; | |
1387 | ||
1388 | while (remaining > 0) { | |
1389 | int length; | |
1390 | ||
1391 | length = cifs_read_from_socket(server, server->bigbuf, | |
1392 | min_t(unsigned int, remaining, | |
1887f601 | 1393 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1394 | if (length < 0) |
1395 | return length; | |
1396 | server->total_read += length; | |
1397 | remaining -= length; | |
1398 | } | |
1399 | ||
1400 | dequeue_mid(mid, rdata->result); | |
1401 | return 0; | |
1402 | } | |
1403 | ||
09a4707e | 1404 | int |
e28bc5b1 JL |
1405 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1406 | { | |
1407 | int length, len; | |
8d5ce4d2 | 1408 | unsigned int data_offset, data_len; |
e28bc5b1 | 1409 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1410 | char *buf = server->smallbuf; |
1411 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1412 | |
f96637be JP |
1413 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1414 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1415 | |
1416 | /* | |
1417 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1418 | * can if there's not enough data. At this point, we've read down to | |
1419 | * the Mid. | |
1420 | */ | |
eb378711 | 1421 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1422 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1423 | |
5819575e JL |
1424 | rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1; |
1425 | rdata->iov.iov_len = len; | |
e28bc5b1 | 1426 | |
5819575e | 1427 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); |
e28bc5b1 JL |
1428 | if (length < 0) |
1429 | return length; | |
1430 | server->total_read += length; | |
1431 | ||
1432 | /* Was the SMB read successful? */ | |
eb378711 | 1433 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1434 | if (rdata->result != 0) { |
f96637be JP |
1435 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1436 | __func__, rdata->result); | |
e28bc5b1 JL |
1437 | return cifs_readv_discard(server, mid); |
1438 | } | |
1439 | ||
1440 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1441 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1442 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1443 | __func__, server->total_read, | |
1444 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1445 | rdata->result = -EIO; |
1446 | return cifs_readv_discard(server, mid); | |
1447 | } | |
1448 | ||
eb378711 | 1449 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1450 | if (data_offset < server->total_read) { |
1451 | /* | |
1452 | * win2k8 sometimes sends an offset of 0 when the read | |
1453 | * is beyond the EOF. Treat it as if the data starts just after | |
1454 | * the header. | |
1455 | */ | |
f96637be JP |
1456 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1457 | __func__, data_offset); | |
e28bc5b1 JL |
1458 | data_offset = server->total_read; |
1459 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1460 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1461 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1462 | __func__, data_offset); | |
e28bc5b1 JL |
1463 | rdata->result = -EIO; |
1464 | return cifs_readv_discard(server, mid); | |
1465 | } | |
1466 | ||
f96637be JP |
1467 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1468 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1469 | |
1470 | len = data_offset - server->total_read; | |
1471 | if (len > 0) { | |
1472 | /* read any junk before data into the rest of smallbuf */ | |
5819575e JL |
1473 | rdata->iov.iov_base = buf + server->total_read; |
1474 | rdata->iov.iov_len = len; | |
1475 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); | |
e28bc5b1 JL |
1476 | if (length < 0) |
1477 | return length; | |
1478 | server->total_read += length; | |
1479 | } | |
1480 | ||
1481 | /* set up first iov for signature check */ | |
5819575e JL |
1482 | rdata->iov.iov_base = buf; |
1483 | rdata->iov.iov_len = server->total_read; | |
f96637be JP |
1484 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1485 | rdata->iov.iov_base, rdata->iov.iov_len); | |
e28bc5b1 JL |
1486 | |
1487 | /* how much data is in the response? */ | |
eb378711 | 1488 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1489 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1490 | /* data_len is corrupt -- discard frame */ |
1491 | rdata->result = -EIO; | |
1492 | return cifs_readv_discard(server, mid); | |
1493 | } | |
1494 | ||
8321fec4 JL |
1495 | length = rdata->read_into_pages(server, rdata, data_len); |
1496 | if (length < 0) | |
1497 | return length; | |
e28bc5b1 | 1498 | |
8321fec4 | 1499 | server->total_read += length; |
e28bc5b1 JL |
1500 | rdata->bytes = length; |
1501 | ||
f96637be JP |
1502 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1503 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1504 | |
1505 | /* discard anything left over */ | |
5ffef7bf | 1506 | if (server->total_read < buflen) |
e28bc5b1 JL |
1507 | return cifs_readv_discard(server, mid); |
1508 | ||
1509 | dequeue_mid(mid, false); | |
1510 | return length; | |
1511 | } | |
1512 | ||
e28bc5b1 JL |
1513 | static void |
1514 | cifs_readv_callback(struct mid_q_entry *mid) | |
1515 | { | |
1516 | struct cifs_readdata *rdata = mid->callback_data; | |
1517 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1518 | struct TCP_Server_Info *server = tcon->ses->server; | |
5819575e JL |
1519 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
1520 | .rq_nvec = 1, | |
8321fec4 JL |
1521 | .rq_pages = rdata->pages, |
1522 | .rq_npages = rdata->nr_pages, | |
1523 | .rq_pagesz = rdata->pagesz, | |
1524 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1525 | |
f96637be JP |
1526 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1527 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1528 | rdata->bytes); | |
e28bc5b1 | 1529 | |
7c9421e1 | 1530 | switch (mid->mid_state) { |
e28bc5b1 JL |
1531 | case MID_RESPONSE_RECEIVED: |
1532 | /* result already set, check signature */ | |
38d77c50 | 1533 | if (server->sign) { |
985e4ff0 SF |
1534 | int rc = 0; |
1535 | ||
bf5ea0e2 | 1536 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1537 | mid->sequence_number); |
985e4ff0 | 1538 | if (rc) |
f96637be JP |
1539 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1540 | rc); | |
e28bc5b1 JL |
1541 | } |
1542 | /* FIXME: should this be counted toward the initiating task? */ | |
1543 | task_io_account_read(rdata->bytes); | |
1544 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1545 | break; | |
1546 | case MID_REQUEST_SUBMITTED: | |
1547 | case MID_RETRY_NEEDED: | |
1548 | rdata->result = -EAGAIN; | |
1549 | break; | |
1550 | default: | |
1551 | rdata->result = -EIO; | |
1552 | } | |
1553 | ||
da472fc8 | 1554 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1555 | DeleteMidQEntry(mid); |
a891f0f8 | 1556 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1557 | } |
1558 | ||
1559 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1560 | int | |
1561 | cifs_async_readv(struct cifs_readdata *rdata) | |
1562 | { | |
1563 | int rc; | |
1564 | READ_REQ *smb = NULL; | |
1565 | int wct; | |
1566 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
5819575e | 1567 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3 | 1568 | .rq_nvec = 1 }; |
e28bc5b1 | 1569 | |
f96637be JP |
1570 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1571 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1572 | |
1573 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1574 | wct = 12; | |
1575 | else { | |
1576 | wct = 10; /* old style read */ | |
1577 | if ((rdata->offset >> 32) > 0) { | |
1578 | /* can not handle this big offset for old */ | |
1579 | return -EIO; | |
1580 | } | |
1581 | } | |
1582 | ||
1583 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1584 | if (rc) | |
1585 | return rc; | |
1586 | ||
1587 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1588 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1589 | ||
1590 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1591 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1592 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1593 | if (wct == 12) | |
1594 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1595 | smb->Remaining = 0; | |
1596 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1597 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1598 | if (wct == 12) | |
1599 | smb->ByteCount = 0; | |
1600 | else { | |
1601 | /* old style read */ | |
1602 | struct smb_com_readx_req *smbr = | |
1603 | (struct smb_com_readx_req *)smb; | |
1604 | smbr->ByteCount = 0; | |
1605 | } | |
1606 | ||
1607 | /* 4 for RFC1001 length + 1 for BCC */ | |
5819575e JL |
1608 | rdata->iov.iov_base = smb; |
1609 | rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
e28bc5b1 | 1610 | |
6993f74a | 1611 | kref_get(&rdata->refcount); |
fec344e3 JL |
1612 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
1613 | cifs_readv_callback, rdata, 0); | |
e28bc5b1 JL |
1614 | |
1615 | if (rc == 0) | |
44c58186 | 1616 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1617 | else |
1618 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1619 | |
1620 | cifs_small_buf_release(smb); | |
1621 | return rc; | |
1622 | } | |
1623 | ||
1da177e4 | 1624 | int |
6d5786a3 PS |
1625 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1626 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1627 | { |
1628 | int rc = -EACCES; | |
1629 | READ_REQ *pSMB = NULL; | |
1630 | READ_RSP *pSMBr = NULL; | |
1631 | char *pReadData = NULL; | |
bfa0d75a | 1632 | int wct; |
ec637e3f SF |
1633 | int resp_buf_type = 0; |
1634 | struct kvec iov[1]; | |
d4ffff1f PS |
1635 | __u32 pid = io_parms->pid; |
1636 | __u16 netfid = io_parms->netfid; | |
1637 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1638 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1639 | unsigned int count = io_parms->length; |
1da177e4 | 1640 | |
f96637be | 1641 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1642 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1643 | wct = 12; |
4c3130ef | 1644 | else { |
bfa0d75a | 1645 | wct = 10; /* old style read */ |
d4ffff1f | 1646 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1647 | /* can not handle this big offset for old */ |
1648 | return -EIO; | |
1649 | } | |
1650 | } | |
1da177e4 LT |
1651 | |
1652 | *nbytes = 0; | |
ec637e3f | 1653 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1654 | if (rc) |
1655 | return rc; | |
1656 | ||
d4ffff1f PS |
1657 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1658 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1659 | ||
1da177e4 LT |
1660 | /* tcon and ses pointer are checked in smb_init */ |
1661 | if (tcon->ses->server == NULL) | |
1662 | return -ECONNABORTED; | |
1663 | ||
ec637e3f | 1664 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1665 | pSMB->Fid = netfid; |
d4ffff1f | 1666 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1667 | if (wct == 12) |
d4ffff1f | 1668 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1669 | |
1da177e4 LT |
1670 | pSMB->Remaining = 0; |
1671 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1672 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1673 | if (wct == 12) |
bfa0d75a SF |
1674 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1675 | else { | |
1676 | /* old style read */ | |
50c2f753 | 1677 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1678 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1679 | pSMBW->ByteCount = 0; |
bfa0d75a | 1680 | } |
ec637e3f SF |
1681 | |
1682 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1683 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1684 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1685 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1686 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1687 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1688 | if (rc) { |
f96637be | 1689 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1690 | } else { |
1691 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1692 | data_length = data_length << 16; | |
1693 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1694 | *nbytes = data_length; | |
1695 | ||
1696 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1697 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1698 | || (data_length > count)) { |
f96637be | 1699 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1700 | data_length, count); |
1da177e4 LT |
1701 | rc = -EIO; |
1702 | *nbytes = 0; | |
1703 | } else { | |
ec637e3f | 1704 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1705 | le16_to_cpu(pSMBr->DataOffset); |
1706 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1707 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1708 | rc = -EFAULT; |
26f57364 | 1709 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1710 | if (*buf) |
50c2f753 | 1711 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1712 | } |
1713 | } | |
1da177e4 | 1714 | |
4b8f930f | 1715 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1716 | if (*buf) { |
1717 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1718 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1719 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1720 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1721 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1722 | /* return buffer to caller to free */ |
1723 | *buf = iov[0].iov_base; | |
790fe579 | 1724 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1725 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1726 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1727 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1728 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1729 | |
1730 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1731 | since file handle passed in no longer valid */ |
1732 | return rc; | |
1733 | } | |
1734 | ||
ec637e3f | 1735 | |
1da177e4 | 1736 | int |
6d5786a3 | 1737 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 | 1738 | unsigned int *nbytes, const char *buf, |
50c2f753 | 1739 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1740 | { |
1741 | int rc = -EACCES; | |
1742 | WRITE_REQ *pSMB = NULL; | |
1743 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1744 | int bytes_returned, wct; |
1da177e4 LT |
1745 | __u32 bytes_sent; |
1746 | __u16 byte_count; | |
fa2989f4 PS |
1747 | __u32 pid = io_parms->pid; |
1748 | __u16 netfid = io_parms->netfid; | |
1749 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1750 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1751 | unsigned int count = io_parms->length; |
1da177e4 | 1752 | |
a24e2d7d SF |
1753 | *nbytes = 0; |
1754 | ||
f96637be | 1755 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1756 | if (tcon->ses == NULL) |
1c955187 SF |
1757 | return -ECONNABORTED; |
1758 | ||
790fe579 | 1759 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1760 | wct = 14; |
4c3130ef | 1761 | else { |
1c955187 | 1762 | wct = 12; |
4c3130ef SF |
1763 | if ((offset >> 32) > 0) { |
1764 | /* can not handle big offset for old srv */ | |
1765 | return -EIO; | |
1766 | } | |
1767 | } | |
1c955187 SF |
1768 | |
1769 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1770 | (void **) &pSMBr); |
1771 | if (rc) | |
1772 | return rc; | |
fa2989f4 PS |
1773 | |
1774 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1775 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1776 | ||
1da177e4 LT |
1777 | /* tcon and ses pointer are checked in smb_init */ |
1778 | if (tcon->ses->server == NULL) | |
1779 | return -ECONNABORTED; | |
1780 | ||
1781 | pSMB->AndXCommand = 0xFF; /* none */ | |
1782 | pSMB->Fid = netfid; | |
1783 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1784 | if (wct == 14) |
1c955187 | 1785 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1786 | |
1da177e4 LT |
1787 | pSMB->Reserved = 0xFFFFFFFF; |
1788 | pSMB->WriteMode = 0; | |
1789 | pSMB->Remaining = 0; | |
1790 | ||
50c2f753 | 1791 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1792 | can send more if LARGE_WRITE_X capability returned by the server and if |
1793 | our buffer is big enough or if we convert to iovecs on socket writes | |
1794 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1795 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1796 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1797 | } else { | |
1798 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1799 | & ~0xFF; | |
1800 | } | |
1801 | ||
1802 | if (bytes_sent > count) | |
1803 | bytes_sent = count; | |
1804 | pSMB->DataOffset = | |
50c2f753 | 1805 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1806 | if (buf) |
61e74801 | 1807 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1808 | else if (ubuf) { |
1809 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1810 | cifs_buf_release(pSMB); |
1811 | return -EFAULT; | |
1812 | } | |
e30dcf3a | 1813 | } else if (count != 0) { |
1da177e4 LT |
1814 | /* No buffer */ |
1815 | cifs_buf_release(pSMB); | |
1816 | return -EINVAL; | |
e30dcf3a | 1817 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1818 | if (wct == 14) |
e30dcf3a | 1819 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1820 | else /* wct == 12 */ |
e30dcf3a | 1821 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1822 | |
1da177e4 LT |
1823 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1824 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1825 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1826 | |
790fe579 | 1827 | if (wct == 14) |
1c955187 | 1828 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1829 | else { /* old style write has byte count 4 bytes earlier |
1830 | so 4 bytes pad */ | |
1831 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1832 | (struct smb_com_writex_req *)pSMB; |
1833 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1834 | } | |
1da177e4 LT |
1835 | |
1836 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1837 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
44c58186 | 1838 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1839 | if (rc) { |
f96637be | 1840 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1841 | } else { |
1842 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1843 | *nbytes = (*nbytes) << 16; | |
1844 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1845 | |
1846 | /* | |
1847 | * Mask off high 16 bits when bytes written as returned by the | |
1848 | * server is greater than bytes requested by the client. Some | |
1849 | * OS/2 servers are known to set incorrect CountHigh values. | |
1850 | */ | |
1851 | if (*nbytes > count) | |
1852 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1853 | } |
1854 | ||
1855 | cifs_buf_release(pSMB); | |
1856 | ||
50c2f753 | 1857 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1858 | since file handle passed in no longer valid */ |
1859 | ||
1860 | return rc; | |
1861 | } | |
1862 | ||
c28c89fc JL |
1863 | void |
1864 | cifs_writedata_release(struct kref *refcount) | |
1865 | { | |
1866 | struct cifs_writedata *wdata = container_of(refcount, | |
1867 | struct cifs_writedata, refcount); | |
1868 | ||
1869 | if (wdata->cfile) | |
1870 | cifsFileInfo_put(wdata->cfile); | |
1871 | ||
1872 | kfree(wdata); | |
1873 | } | |
1874 | ||
1875 | /* | |
1876 | * Write failed with a retryable error. Resend the write request. It's also | |
1877 | * possible that the page was redirtied so re-clean the page. | |
1878 | */ | |
1879 | static void | |
1880 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1881 | { | |
1882 | int i, rc; | |
1883 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
c9de5c80 | 1884 | struct TCP_Server_Info *server; |
c28c89fc JL |
1885 | |
1886 | for (i = 0; i < wdata->nr_pages; i++) { | |
1887 | lock_page(wdata->pages[i]); | |
1888 | clear_page_dirty_for_io(wdata->pages[i]); | |
1889 | } | |
1890 | ||
1891 | do { | |
c9de5c80 PS |
1892 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1893 | rc = server->ops->async_writev(wdata); | |
c28c89fc JL |
1894 | } while (rc == -EAGAIN); |
1895 | ||
1896 | for (i = 0; i < wdata->nr_pages; i++) { | |
94e18007 | 1897 | unlock_page(wdata->pages[i]); |
c51bb0ea | 1898 | if (rc != 0) { |
c28c89fc | 1899 | SetPageError(wdata->pages[i]); |
c51bb0ea OM |
1900 | end_page_writeback(wdata->pages[i]); |
1901 | page_cache_release(wdata->pages[i]); | |
1902 | } | |
c28c89fc JL |
1903 | } |
1904 | ||
1905 | mapping_set_error(inode->i_mapping, rc); | |
1906 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1907 | } | |
1908 | ||
c2e87640 | 1909 | void |
c28c89fc JL |
1910 | cifs_writev_complete(struct work_struct *work) |
1911 | { | |
1912 | struct cifs_writedata *wdata = container_of(work, | |
1913 | struct cifs_writedata, work); | |
1914 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1915 | int i = 0; | |
1916 | ||
1917 | if (wdata->result == 0) { | |
597b027f | 1918 | spin_lock(&inode->i_lock); |
c28c89fc | 1919 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1920 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1921 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1922 | wdata->bytes); | |
1923 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1924 | return cifs_writev_requeue(wdata); | |
1925 | ||
1926 | for (i = 0; i < wdata->nr_pages; i++) { | |
1927 | struct page *page = wdata->pages[i]; | |
1928 | if (wdata->result == -EAGAIN) | |
1929 | __set_page_dirty_nobuffers(page); | |
1930 | else if (wdata->result < 0) | |
1931 | SetPageError(page); | |
1932 | end_page_writeback(page); | |
1933 | page_cache_release(page); | |
1934 | } | |
1935 | if (wdata->result != -EAGAIN) | |
1936 | mapping_set_error(inode->i_mapping, wdata->result); | |
1937 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1938 | } | |
1939 | ||
1940 | struct cifs_writedata * | |
c2e87640 | 1941 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1942 | { |
1943 | struct cifs_writedata *wdata; | |
1944 | ||
1945 | /* this would overflow */ | |
1946 | if (nr_pages == 0) { | |
f96637be | 1947 | cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__); |
c28c89fc JL |
1948 | return NULL; |
1949 | } | |
1950 | ||
1951 | /* writedata + number of page pointers */ | |
1952 | wdata = kzalloc(sizeof(*wdata) + | |
1953 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1954 | if (wdata != NULL) { | |
c28c89fc | 1955 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1956 | INIT_LIST_HEAD(&wdata->list); |
1957 | init_completion(&wdata->done); | |
1958 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1959 | } |
1960 | return wdata; | |
1961 | } | |
1962 | ||
1963 | /* | |
7c9421e1 | 1964 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1965 | * workqueue completion task. |
1966 | */ | |
1967 | static void | |
1968 | cifs_writev_callback(struct mid_q_entry *mid) | |
1969 | { | |
1970 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1971 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1972 | unsigned int written; |
1973 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1974 | ||
7c9421e1 | 1975 | switch (mid->mid_state) { |
c28c89fc JL |
1976 | case MID_RESPONSE_RECEIVED: |
1977 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1978 | if (wdata->result != 0) | |
1979 | break; | |
1980 | ||
1981 | written = le16_to_cpu(smb->CountHigh); | |
1982 | written <<= 16; | |
1983 | written += le16_to_cpu(smb->Count); | |
1984 | /* | |
1985 | * Mask off high 16 bits when bytes written as returned | |
1986 | * by the server is greater than bytes requested by the | |
1987 | * client. OS/2 servers are known to set incorrect | |
1988 | * CountHigh values. | |
1989 | */ | |
1990 | if (written > wdata->bytes) | |
1991 | written &= 0xFFFF; | |
1992 | ||
1993 | if (written < wdata->bytes) | |
1994 | wdata->result = -ENOSPC; | |
1995 | else | |
1996 | wdata->bytes = written; | |
1997 | break; | |
1998 | case MID_REQUEST_SUBMITTED: | |
1999 | case MID_RETRY_NEEDED: | |
2000 | wdata->result = -EAGAIN; | |
2001 | break; | |
2002 | default: | |
2003 | wdata->result = -EIO; | |
2004 | break; | |
2005 | } | |
2006 | ||
da472fc8 | 2007 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2008 | DeleteMidQEntry(mid); |
a891f0f8 | 2009 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2010 | } |
2011 | ||
2012 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2013 | int | |
2014 | cifs_async_writev(struct cifs_writedata *wdata) | |
2015 | { | |
eddb079d | 2016 | int rc = -EACCES; |
c28c89fc JL |
2017 | WRITE_REQ *smb = NULL; |
2018 | int wct; | |
96daf2b0 | 2019 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079d | 2020 | struct kvec iov; |
fec344e3 | 2021 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2022 | |
2023 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2024 | wct = 14; | |
2025 | } else { | |
2026 | wct = 12; | |
2027 | if (wdata->offset >> 32 > 0) { | |
2028 | /* can not handle big offset for old srv */ | |
2029 | return -EIO; | |
2030 | } | |
2031 | } | |
2032 | ||
2033 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2034 | if (rc) | |
2035 | goto async_writev_out; | |
2036 | ||
fe5f5d2e JL |
2037 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2038 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2039 | |
c28c89fc | 2040 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2041 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2042 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2043 | if (wct == 14) | |
2044 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2045 | smb->Reserved = 0xFFFFFFFF; | |
2046 | smb->WriteMode = 0; | |
2047 | smb->Remaining = 0; | |
2048 | ||
2049 | smb->DataOffset = | |
2050 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2051 | ||
2052 | /* 4 for RFC1001 length + 1 for BCC */ | |
eddb079d JL |
2053 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; |
2054 | iov.iov_base = smb; | |
c28c89fc | 2055 | |
eddb079d JL |
2056 | rqst.rq_iov = &iov; |
2057 | rqst.rq_nvec = 1; | |
2058 | rqst.rq_pages = wdata->pages; | |
2059 | rqst.rq_npages = wdata->nr_pages; | |
2060 | rqst.rq_pagesz = wdata->pagesz; | |
2061 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2062 | |
f96637be JP |
2063 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2064 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2065 | |
2066 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2067 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2068 | ||
2069 | if (wct == 14) { | |
2070 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2071 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2072 | } else { | |
2073 | /* wct == 12 */ | |
2074 | struct smb_com_writex_req *smbw = | |
2075 | (struct smb_com_writex_req *)smb; | |
2076 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2077 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
eddb079d | 2078 | iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2079 | } |
2080 | ||
2081 | kref_get(&wdata->refcount); | |
fec344e3 JL |
2082 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
2083 | cifs_writev_callback, wdata, 0); | |
c28c89fc JL |
2084 | |
2085 | if (rc == 0) | |
44c58186 | 2086 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc JL |
2087 | else |
2088 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2089 | ||
c28c89fc JL |
2090 | async_writev_out: |
2091 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2092 | return rc; |
2093 | } | |
2094 | ||
d6e04ae6 | 2095 | int |
6d5786a3 | 2096 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2097 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2098 | { |
2099 | int rc = -EACCES; | |
2100 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2101 | int wct; |
d6e04ae6 | 2102 | int smb_hdr_len; |
ec637e3f | 2103 | int resp_buf_type = 0; |
fa2989f4 PS |
2104 | __u32 pid = io_parms->pid; |
2105 | __u16 netfid = io_parms->netfid; | |
2106 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2107 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2108 | unsigned int count = io_parms->length; |
1da177e4 | 2109 | |
fbec9ab9 JL |
2110 | *nbytes = 0; |
2111 | ||
f96637be | 2112 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2113 | |
4c3130ef | 2114 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2115 | wct = 14; |
4c3130ef | 2116 | } else { |
8cc64c6e | 2117 | wct = 12; |
4c3130ef SF |
2118 | if ((offset >> 32) > 0) { |
2119 | /* can not handle big offset for old srv */ | |
2120 | return -EIO; | |
2121 | } | |
2122 | } | |
8cc64c6e | 2123 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2124 | if (rc) |
2125 | return rc; | |
fa2989f4 PS |
2126 | |
2127 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2128 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2129 | ||
1da177e4 LT |
2130 | /* tcon and ses pointer are checked in smb_init */ |
2131 | if (tcon->ses->server == NULL) | |
2132 | return -ECONNABORTED; | |
2133 | ||
d6e04ae6 | 2134 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2135 | pSMB->Fid = netfid; |
2136 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2137 | if (wct == 14) |
8cc64c6e | 2138 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2139 | pSMB->Reserved = 0xFFFFFFFF; |
2140 | pSMB->WriteMode = 0; | |
2141 | pSMB->Remaining = 0; | |
d6e04ae6 | 2142 | |
1da177e4 | 2143 | pSMB->DataOffset = |
50c2f753 | 2144 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2145 | |
3e84469d SF |
2146 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2147 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2148 | /* header + 1 byte pad */ |
2149 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2150 | if (wct == 14) |
be8e3b00 | 2151 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2152 | else /* wct == 12 */ |
be8e3b00 | 2153 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2154 | if (wct == 14) |
8cc64c6e SF |
2155 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2156 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2157 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2158 | (struct smb_com_writex_req *)pSMB; |
2159 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2160 | } | |
3e84469d | 2161 | iov[0].iov_base = pSMB; |
790fe579 | 2162 | if (wct == 14) |
ec637e3f SF |
2163 | iov[0].iov_len = smb_hdr_len + 4; |
2164 | else /* wct == 12 pad bigger by four bytes */ | |
2165 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2166 | |
1da177e4 | 2167 | |
ba9ad725 | 2168 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c58186 | 2169 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2170 | if (rc) { |
f96637be | 2171 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2172 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2173 | /* presumably this can not happen, but best to be safe */ |
2174 | rc = -EIO; | |
d6e04ae6 | 2175 | } else { |
ad7a2926 | 2176 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2177 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2178 | *nbytes = (*nbytes) << 16; | |
2179 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2180 | |
2181 | /* | |
2182 | * Mask off high 16 bits when bytes written as returned by the | |
2183 | * server is greater than bytes requested by the client. OS/2 | |
2184 | * servers are known to set incorrect CountHigh values. | |
2185 | */ | |
2186 | if (*nbytes > count) | |
2187 | *nbytes &= 0xFFFF; | |
50c2f753 | 2188 | } |
1da177e4 | 2189 | |
4b8f930f | 2190 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2191 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2192 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2193 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2194 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2195 | |
50c2f753 | 2196 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2197 | since file handle passed in no longer valid */ |
2198 | ||
2199 | return rc; | |
2200 | } | |
d6e04ae6 | 2201 | |
6d5786a3 PS |
2202 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2203 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2204 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2205 | { | |
2206 | int rc = 0; | |
2207 | LOCK_REQ *pSMB = NULL; | |
2208 | struct kvec iov[2]; | |
2209 | int resp_buf_type; | |
2210 | __u16 count; | |
2211 | ||
f96637be JP |
2212 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2213 | num_lock, num_unlock); | |
9ee305b7 PS |
2214 | |
2215 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2216 | if (rc) | |
2217 | return rc; | |
2218 | ||
2219 | pSMB->Timeout = 0; | |
2220 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2221 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2222 | pSMB->LockType = lock_type; | |
2223 | pSMB->AndXCommand = 0xFF; /* none */ | |
2224 | pSMB->Fid = netfid; /* netfid stays le */ | |
2225 | ||
2226 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2227 | inc_rfc1001_len(pSMB, count); | |
2228 | pSMB->ByteCount = cpu_to_le16(count); | |
2229 | ||
2230 | iov[0].iov_base = (char *)pSMB; | |
2231 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2232 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2233 | iov[1].iov_base = (char *)buf; | |
2234 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2235 | ||
44c58186 | 2236 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2237 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2238 | if (rc) | |
f96637be | 2239 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2240 | |
2241 | return rc; | |
2242 | } | |
d6e04ae6 | 2243 | |
1da177e4 | 2244 | int |
6d5786a3 | 2245 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2246 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2247 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2248 | const __u32 numLock, const __u8 lockType, |
2249 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2250 | { |
2251 | int rc = 0; | |
2252 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2253 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2254 | int bytes_returned; |
a891f0f8 | 2255 | int flags = 0; |
1da177e4 LT |
2256 | __u16 count; |
2257 | ||
f96637be JP |
2258 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2259 | (int)waitFlag, numLock); | |
46810cbf SF |
2260 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2261 | ||
1da177e4 LT |
2262 | if (rc) |
2263 | return rc; | |
2264 | ||
790fe579 | 2265 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2266 | /* no response expected */ |
2267 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2268 | pSMB->Timeout = 0; |
4b18f2a9 | 2269 | } else if (waitFlag) { |
a891f0f8 | 2270 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2271 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2272 | } else { | |
2273 | pSMB->Timeout = 0; | |
2274 | } | |
2275 | ||
2276 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2277 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2278 | pSMB->LockType = lockType; | |
12fed00d | 2279 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2280 | pSMB->AndXCommand = 0xFF; /* none */ |
2281 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2282 | ||
790fe579 | 2283 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2284 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2285 | /* BB where to store pid high? */ |
2286 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2287 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2288 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2289 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2290 | count = sizeof(LOCKING_ANDX_RANGE); | |
2291 | } else { | |
2292 | /* oplock break */ | |
2293 | count = 0; | |
2294 | } | |
be8e3b00 | 2295 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2296 | pSMB->ByteCount = cpu_to_le16(count); |
2297 | ||
7ee1af76 JA |
2298 | if (waitFlag) { |
2299 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2300 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2301 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2302 | } else { |
a891f0f8 | 2303 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2304 | /* SMB buffer freed by function above */ |
7ee1af76 | 2305 | } |
44c58186 | 2306 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2307 | if (rc) |
f96637be | 2308 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2309 | |
50c2f753 | 2310 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2311 | since file handle passed in no longer valid */ |
2312 | return rc; | |
2313 | } | |
2314 | ||
08547b03 | 2315 | int |
6d5786a3 | 2316 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2317 | const __u16 smb_file_id, const __u32 netpid, |
2318 | const loff_t start_offset, const __u64 len, | |
2319 | struct file_lock *pLockData, const __u16 lock_type, | |
2320 | const bool waitFlag) | |
08547b03 SF |
2321 | { |
2322 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2323 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2324 | struct cifs_posix_lock *parm_data; |
2325 | int rc = 0; | |
3a5ff61c | 2326 | int timeout = 0; |
08547b03 | 2327 | int bytes_returned = 0; |
133672ef | 2328 | int resp_buf_type = 0; |
08547b03 | 2329 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2330 | struct kvec iov[1]; |
08547b03 | 2331 | |
f96637be | 2332 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2333 | |
08547b03 SF |
2334 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2335 | ||
2336 | if (rc) | |
2337 | return rc; | |
2338 | ||
2339 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2340 | ||
50c2f753 | 2341 | params = 6; |
08547b03 SF |
2342 | pSMB->MaxSetupCount = 0; |
2343 | pSMB->Reserved = 0; | |
2344 | pSMB->Flags = 0; | |
08547b03 SF |
2345 | pSMB->Reserved2 = 0; |
2346 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2347 | offset = param_offset + params; | |
2348 | ||
08547b03 SF |
2349 | count = sizeof(struct cifs_posix_lock); |
2350 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2351 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2352 | pSMB->SetupCount = 1; |
2353 | pSMB->Reserved3 = 0; | |
c5fd363d | 2354 | if (pLockData) |
08547b03 SF |
2355 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2356 | else | |
2357 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2358 | byte_count = 3 /* pad */ + params + count; | |
2359 | pSMB->DataCount = cpu_to_le16(count); | |
2360 | pSMB->ParameterCount = cpu_to_le16(params); | |
2361 | pSMB->TotalDataCount = pSMB->DataCount; | |
2362 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2363 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2364 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2365 | (((char *) &pSMB->hdr.Protocol) + offset); |
2366 | ||
2367 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2368 | if (waitFlag) { |
133672ef | 2369 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2370 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2371 | pSMB->Timeout = cpu_to_le32(-1); |
2372 | } else | |
2373 | pSMB->Timeout = 0; | |
2374 | ||
4f6bcec9 | 2375 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2376 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2377 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2378 | |
2379 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2380 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2381 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2382 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2383 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2384 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2385 | if (waitFlag) { |
2386 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2387 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2388 | } else { | |
133672ef | 2389 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2390 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2391 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2392 | &resp_buf_type, timeout); | |
2393 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2394 | not try to free it twice below on exit */ | |
2395 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2396 | } |
2397 | ||
08547b03 | 2398 | if (rc) { |
f96637be | 2399 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2400 | } else if (pLockData) { |
fc94cdb9 SF |
2401 | /* lock structure can be returned on get */ |
2402 | __u16 data_offset; | |
2403 | __u16 data_count; | |
2404 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2405 | ||
820a803f | 2406 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2407 | rc = -EIO; /* bad smb */ |
2408 | goto plk_err_exit; | |
2409 | } | |
fc94cdb9 SF |
2410 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2411 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2412 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2413 | rc = -EIO; |
2414 | goto plk_err_exit; | |
2415 | } | |
2416 | parm_data = (struct cifs_posix_lock *) | |
2417 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2418 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2419 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2420 | else { |
2421 | if (parm_data->lock_type == | |
2422 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2423 | pLockData->fl_type = F_RDLCK; | |
2424 | else if (parm_data->lock_type == | |
2425 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2426 | pLockData->fl_type = F_WRLCK; | |
2427 | ||
5443d130 SF |
2428 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2429 | pLockData->fl_end = pLockData->fl_start + | |
2430 | le64_to_cpu(parm_data->length) - 1; | |
2431 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2432 | } |
08547b03 | 2433 | } |
50c2f753 | 2434 | |
fc94cdb9 | 2435 | plk_err_exit: |
08547b03 SF |
2436 | if (pSMB) |
2437 | cifs_small_buf_release(pSMB); | |
2438 | ||
133672ef SF |
2439 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2440 | cifs_small_buf_release(iov[0].iov_base); | |
2441 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2442 | cifs_buf_release(iov[0].iov_base); | |
2443 | ||
08547b03 SF |
2444 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2445 | since file handle passed in no longer valid */ | |
2446 | ||
2447 | return rc; | |
2448 | } | |
2449 | ||
2450 | ||
1da177e4 | 2451 | int |
6d5786a3 | 2452 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2453 | { |
2454 | int rc = 0; | |
2455 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2456 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2457 | |
2458 | /* do not retry on dead session on close */ | |
2459 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2460 | if (rc == -EAGAIN) |
1da177e4 LT |
2461 | return 0; |
2462 | if (rc) | |
2463 | return rc; | |
2464 | ||
1da177e4 | 2465 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2466 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2467 | pSMB->ByteCount = 0; |
792af7b0 | 2468 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2469 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2470 | if (rc) { |
790fe579 | 2471 | if (rc != -EINTR) { |
1da177e4 | 2472 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2473 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2474 | } |
2475 | } | |
2476 | ||
1da177e4 | 2477 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2478 | if (rc == -EAGAIN) |
1da177e4 LT |
2479 | rc = 0; |
2480 | ||
2481 | return rc; | |
2482 | } | |
2483 | ||
b298f223 | 2484 | int |
6d5786a3 | 2485 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2486 | { |
2487 | int rc = 0; | |
2488 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2489 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2490 | |
2491 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2492 | if (rc) | |
2493 | return rc; | |
2494 | ||
2495 | pSMB->FileID = (__u16) smb_file_id; | |
2496 | pSMB->ByteCount = 0; | |
792af7b0 | 2497 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2498 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2499 | if (rc) |
f96637be | 2500 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2501 | |
2502 | return rc; | |
2503 | } | |
2504 | ||
1da177e4 | 2505 | int |
6d5786a3 | 2506 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2507 | const char *from_name, const char *to_name, |
2508 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2509 | { |
2510 | int rc = 0; | |
2511 | RENAME_REQ *pSMB = NULL; | |
2512 | RENAME_RSP *pSMBr = NULL; | |
2513 | int bytes_returned; | |
2514 | int name_len, name_len2; | |
2515 | __u16 count; | |
8ceb9843 | 2516 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2517 | |
f96637be | 2518 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2519 | renameRetry: |
2520 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2521 | (void **) &pSMBr); | |
2522 | if (rc) | |
2523 | return rc; | |
2524 | ||
2525 | pSMB->BufferFormat = 0x04; | |
2526 | pSMB->SearchAttributes = | |
2527 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2528 | ATTR_DIRECTORY); | |
2529 | ||
2530 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2531 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2532 | from_name, PATH_MAX, | |
2533 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2534 | name_len++; /* trailing null */ |
2535 | name_len *= 2; | |
2536 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2537 | /* protocol requires ASCII signature byte on Unicode string */ | |
2538 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2539 | name_len2 = | |
acbbb76a | 2540 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2541 | to_name, PATH_MAX, cifs_sb->local_nls, |
2542 | remap); | |
1da177e4 LT |
2543 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2544 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2545 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2546 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2547 | name_len++; /* trailing null */ |
8ceb9843 PS |
2548 | strncpy(pSMB->OldFileName, from_name, name_len); |
2549 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2550 | name_len2++; /* trailing null */ |
2551 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2552 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2553 | name_len2++; /* trailing null */ |
2554 | name_len2++; /* signature byte */ | |
2555 | } | |
2556 | ||
2557 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2558 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2559 | pSMB->ByteCount = cpu_to_le16(count); |
2560 | ||
2561 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2562 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2563 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2564 | if (rc) |
f96637be | 2565 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2566 | |
1da177e4 LT |
2567 | cifs_buf_release(pSMB); |
2568 | ||
2569 | if (rc == -EAGAIN) | |
2570 | goto renameRetry; | |
2571 | ||
2572 | return rc; | |
2573 | } | |
2574 | ||
6d5786a3 | 2575 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2576 | int netfid, const char *target_name, |
50c2f753 | 2577 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2578 | { |
2579 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2580 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2581 | struct set_file_rename *rename_info; |
1da177e4 LT |
2582 | char *data_offset; |
2583 | char dummy_string[30]; | |
2584 | int rc = 0; | |
2585 | int bytes_returned = 0; | |
2586 | int len_of_str; | |
2587 | __u16 params, param_offset, offset, count, byte_count; | |
2588 | ||
f96637be | 2589 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2590 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2591 | (void **) &pSMBr); | |
2592 | if (rc) | |
2593 | return rc; | |
2594 | ||
2595 | params = 6; | |
2596 | pSMB->MaxSetupCount = 0; | |
2597 | pSMB->Reserved = 0; | |
2598 | pSMB->Flags = 0; | |
2599 | pSMB->Timeout = 0; | |
2600 | pSMB->Reserved2 = 0; | |
2601 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2602 | offset = param_offset + params; | |
2603 | ||
2604 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2605 | rename_info = (struct set_file_rename *) data_offset; | |
2606 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2607 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2608 | pSMB->SetupCount = 1; |
2609 | pSMB->Reserved3 = 0; | |
2610 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2611 | byte_count = 3 /* pad */ + params; | |
2612 | pSMB->ParameterCount = cpu_to_le16(params); | |
2613 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2614 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2615 | pSMB->DataOffset = cpu_to_le16(offset); | |
2616 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2617 | rename_info->overwrite = cpu_to_le32(1); | |
2618 | rename_info->root_fid = 0; | |
2619 | /* unicode only call */ | |
790fe579 | 2620 | if (target_name == NULL) { |
50c2f753 | 2621 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2622 | len_of_str = |
2623 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2624 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2625 | } else { |
acbbb76a SF |
2626 | len_of_str = |
2627 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2628 | target_name, PATH_MAX, nls_codepage, |
2629 | remap); | |
1da177e4 LT |
2630 | } |
2631 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2632 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2633 | byte_count += count; |
2634 | pSMB->DataCount = cpu_to_le16(count); | |
2635 | pSMB->TotalDataCount = pSMB->DataCount; | |
2636 | pSMB->Fid = netfid; | |
2637 | pSMB->InformationLevel = | |
2638 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2639 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2640 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2641 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2642 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2643 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2644 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2645 | if (rc) |
f96637be JP |
2646 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2647 | rc); | |
a5a2b489 | 2648 | |
1da177e4 LT |
2649 | cifs_buf_release(pSMB); |
2650 | ||
2651 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2652 | since file handle passed in no longer valid */ | |
2653 | ||
2654 | return rc; | |
2655 | } | |
2656 | ||
2657 | int | |
6d5786a3 PS |
2658 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2659 | const char *fromName, const __u16 target_tid, const char *toName, | |
2660 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2661 | { |
2662 | int rc = 0; | |
2663 | COPY_REQ *pSMB = NULL; | |
2664 | COPY_RSP *pSMBr = NULL; | |
2665 | int bytes_returned; | |
2666 | int name_len, name_len2; | |
2667 | __u16 count; | |
2668 | ||
f96637be | 2669 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2670 | copyRetry: |
2671 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2672 | (void **) &pSMBr); | |
2673 | if (rc) | |
2674 | return rc; | |
2675 | ||
2676 | pSMB->BufferFormat = 0x04; | |
2677 | pSMB->Tid2 = target_tid; | |
2678 | ||
2679 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2680 | ||
2681 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2682 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2683 | fromName, PATH_MAX, nls_codepage, | |
2684 | remap); | |
1da177e4 LT |
2685 | name_len++; /* trailing null */ |
2686 | name_len *= 2; | |
2687 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2688 | /* protocol requires ASCII signature byte on Unicode string */ | |
2689 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2690 | name_len2 = |
acbbb76a SF |
2691 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2692 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2693 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2694 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2695 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2696 | name_len = strnlen(fromName, PATH_MAX); |
2697 | name_len++; /* trailing null */ | |
2698 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2699 | name_len2 = strnlen(toName, PATH_MAX); | |
2700 | name_len2++; /* trailing null */ | |
2701 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2702 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2703 | name_len2++; /* trailing null */ | |
2704 | name_len2++; /* signature byte */ | |
2705 | } | |
2706 | ||
2707 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2708 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2709 | pSMB->ByteCount = cpu_to_le16(count); |
2710 | ||
2711 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2712 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2713 | if (rc) { | |
f96637be JP |
2714 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2715 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2716 | } |
0d817bc0 | 2717 | cifs_buf_release(pSMB); |
1da177e4 LT |
2718 | |
2719 | if (rc == -EAGAIN) | |
2720 | goto copyRetry; | |
2721 | ||
2722 | return rc; | |
2723 | } | |
2724 | ||
2725 | int | |
6d5786a3 | 2726 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2727 | const char *fromName, const char *toName, |
2728 | const struct nls_table *nls_codepage) | |
2729 | { | |
2730 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2731 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2732 | char *data_offset; | |
2733 | int name_len; | |
2734 | int name_len_target; | |
2735 | int rc = 0; | |
2736 | int bytes_returned = 0; | |
2737 | __u16 params, param_offset, offset, byte_count; | |
2738 | ||
f96637be | 2739 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2740 | createSymLinkRetry: |
2741 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2742 | (void **) &pSMBr); | |
2743 | if (rc) | |
2744 | return rc; | |
2745 | ||
2746 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2747 | name_len = | |
acbbb76a SF |
2748 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2749 | /* find define for this maxpathcomponent */ | |
2750 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2751 | name_len++; /* trailing null */ |
2752 | name_len *= 2; | |
2753 | ||
50c2f753 | 2754 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2755 | name_len = strnlen(fromName, PATH_MAX); |
2756 | name_len++; /* trailing null */ | |
2757 | strncpy(pSMB->FileName, fromName, name_len); | |
2758 | } | |
2759 | params = 6 + name_len; | |
2760 | pSMB->MaxSetupCount = 0; | |
2761 | pSMB->Reserved = 0; | |
2762 | pSMB->Flags = 0; | |
2763 | pSMB->Timeout = 0; | |
2764 | pSMB->Reserved2 = 0; | |
2765 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2766 | InformationLevel) - 4; |
1da177e4 LT |
2767 | offset = param_offset + params; |
2768 | ||
2769 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2770 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2771 | name_len_target = | |
acbbb76a SF |
2772 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2773 | /* find define for this maxpathcomponent */ | |
2774 | , nls_codepage); | |
1da177e4 LT |
2775 | name_len_target++; /* trailing null */ |
2776 | name_len_target *= 2; | |
50c2f753 | 2777 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2778 | name_len_target = strnlen(toName, PATH_MAX); |
2779 | name_len_target++; /* trailing null */ | |
2780 | strncpy(data_offset, toName, name_len_target); | |
2781 | } | |
2782 | ||
2783 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2784 | /* BB find exact max on data count below from sess */ | |
2785 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2786 | pSMB->SetupCount = 1; | |
2787 | pSMB->Reserved3 = 0; | |
2788 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2789 | byte_count = 3 /* pad */ + params + name_len_target; | |
2790 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2791 | pSMB->ParameterCount = cpu_to_le16(params); | |
2792 | pSMB->TotalDataCount = pSMB->DataCount; | |
2793 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2794 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2795 | pSMB->DataOffset = cpu_to_le16(offset); | |
2796 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2797 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2798 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2799 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2800 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2801 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2802 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2803 | if (rc) |
f96637be JP |
2804 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2805 | rc); | |
1da177e4 | 2806 | |
0d817bc0 | 2807 | cifs_buf_release(pSMB); |
1da177e4 LT |
2808 | |
2809 | if (rc == -EAGAIN) | |
2810 | goto createSymLinkRetry; | |
2811 | ||
2812 | return rc; | |
2813 | } | |
2814 | ||
2815 | int | |
6d5786a3 | 2816 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2817 | const char *fromName, const char *toName, |
737b758c | 2818 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2819 | { |
2820 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2821 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2822 | char *data_offset; | |
2823 | int name_len; | |
2824 | int name_len_target; | |
2825 | int rc = 0; | |
2826 | int bytes_returned = 0; | |
2827 | __u16 params, param_offset, offset, byte_count; | |
2828 | ||
f96637be | 2829 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2830 | createHardLinkRetry: |
2831 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2832 | (void **) &pSMBr); | |
2833 | if (rc) | |
2834 | return rc; | |
2835 | ||
2836 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2837 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2838 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2839 | name_len++; /* trailing null */ |
2840 | name_len *= 2; | |
2841 | ||
50c2f753 | 2842 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2843 | name_len = strnlen(toName, PATH_MAX); |
2844 | name_len++; /* trailing null */ | |
2845 | strncpy(pSMB->FileName, toName, name_len); | |
2846 | } | |
2847 | params = 6 + name_len; | |
2848 | pSMB->MaxSetupCount = 0; | |
2849 | pSMB->Reserved = 0; | |
2850 | pSMB->Flags = 0; | |
2851 | pSMB->Timeout = 0; | |
2852 | pSMB->Reserved2 = 0; | |
2853 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2854 | InformationLevel) - 4; |
1da177e4 LT |
2855 | offset = param_offset + params; |
2856 | ||
2857 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2858 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2859 | name_len_target = | |
acbbb76a SF |
2860 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2861 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2862 | name_len_target++; /* trailing null */ |
2863 | name_len_target *= 2; | |
50c2f753 | 2864 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2865 | name_len_target = strnlen(fromName, PATH_MAX); |
2866 | name_len_target++; /* trailing null */ | |
2867 | strncpy(data_offset, fromName, name_len_target); | |
2868 | } | |
2869 | ||
2870 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2871 | /* BB find exact max on data count below from sess*/ | |
2872 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2873 | pSMB->SetupCount = 1; | |
2874 | pSMB->Reserved3 = 0; | |
2875 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2876 | byte_count = 3 /* pad */ + params + name_len_target; | |
2877 | pSMB->ParameterCount = cpu_to_le16(params); | |
2878 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2879 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2880 | pSMB->TotalDataCount = pSMB->DataCount; | |
2881 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2882 | pSMB->DataOffset = cpu_to_le16(offset); | |
2883 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2884 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2885 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2886 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2887 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2888 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2889 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2890 | if (rc) |
f96637be JP |
2891 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2892 | rc); | |
1da177e4 LT |
2893 | |
2894 | cifs_buf_release(pSMB); | |
2895 | if (rc == -EAGAIN) | |
2896 | goto createHardLinkRetry; | |
2897 | ||
2898 | return rc; | |
2899 | } | |
2900 | ||
2901 | int | |
6d5786a3 | 2902 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2903 | const char *from_name, const char *to_name, |
2904 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2905 | { |
2906 | int rc = 0; | |
2907 | NT_RENAME_REQ *pSMB = NULL; | |
2908 | RENAME_RSP *pSMBr = NULL; | |
2909 | int bytes_returned; | |
2910 | int name_len, name_len2; | |
2911 | __u16 count; | |
d6e906f1 | 2912 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2913 | |
f96637be | 2914 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2915 | winCreateHardLinkRetry: |
2916 | ||
2917 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2918 | (void **) &pSMBr); | |
2919 | if (rc) | |
2920 | return rc; | |
2921 | ||
2922 | pSMB->SearchAttributes = | |
2923 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2924 | ATTR_DIRECTORY); | |
2925 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2926 | pSMB->ClusterCount = 0; | |
2927 | ||
2928 | pSMB->BufferFormat = 0x04; | |
2929 | ||
2930 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2931 | name_len = | |
d6e906f1 SF |
2932 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2933 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2934 | name_len++; /* trailing null */ |
2935 | name_len *= 2; | |
fcc7c09d JL |
2936 | |
2937 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2938 | pSMB->OldFileName[name_len] = 0x04; | |
2939 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2940 | name_len2 = |
acbbb76a | 2941 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2942 | to_name, PATH_MAX, cifs_sb->local_nls, |
2943 | remap); | |
1da177e4 LT |
2944 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2945 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2946 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 2947 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2948 | name_len++; /* trailing null */ |
d6e906f1 SF |
2949 | strncpy(pSMB->OldFileName, from_name, name_len); |
2950 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2951 | name_len2++; /* trailing null */ |
2952 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 2953 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2954 | name_len2++; /* trailing null */ |
2955 | name_len2++; /* signature byte */ | |
2956 | } | |
2957 | ||
2958 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2959 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2960 | pSMB->ByteCount = cpu_to_le16(count); |
2961 | ||
2962 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2963 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2964 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2965 | if (rc) |
f96637be | 2966 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 2967 | |
1da177e4 LT |
2968 | cifs_buf_release(pSMB); |
2969 | if (rc == -EAGAIN) | |
2970 | goto winCreateHardLinkRetry; | |
2971 | ||
2972 | return rc; | |
2973 | } | |
2974 | ||
2975 | int | |
6d5786a3 | 2976 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2977 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2978 | const struct nls_table *nls_codepage) |
2979 | { | |
2980 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2981 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2982 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2983 | int rc = 0; | |
2984 | int bytes_returned; | |
2985 | int name_len; | |
2986 | __u16 params, byte_count; | |
460b9696 | 2987 | char *data_start; |
1da177e4 | 2988 | |
f96637be | 2989 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
2990 | |
2991 | querySymLinkRetry: | |
2992 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2993 | (void **) &pSMBr); | |
2994 | if (rc) | |
2995 | return rc; | |
2996 | ||
2997 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2998 | name_len = | |
acbbb76a SF |
2999 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3000 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3001 | name_len++; /* trailing null */ |
3002 | name_len *= 2; | |
50c2f753 | 3003 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3004 | name_len = strnlen(searchName, PATH_MAX); |
3005 | name_len++; /* trailing null */ | |
3006 | strncpy(pSMB->FileName, searchName, name_len); | |
3007 | } | |
3008 | ||
3009 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3010 | pSMB->TotalDataCount = 0; | |
3011 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3012 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3013 | pSMB->MaxSetupCount = 0; |
3014 | pSMB->Reserved = 0; | |
3015 | pSMB->Flags = 0; | |
3016 | pSMB->Timeout = 0; | |
3017 | pSMB->Reserved2 = 0; | |
3018 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3019 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3020 | pSMB->DataCount = 0; |
3021 | pSMB->DataOffset = 0; | |
3022 | pSMB->SetupCount = 1; | |
3023 | pSMB->Reserved3 = 0; | |
3024 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3025 | byte_count = params + 1 /* pad */ ; | |
3026 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3027 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3028 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3029 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3030 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3031 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3032 | ||
3033 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3034 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3035 | if (rc) { | |
f96637be | 3036 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3037 | } else { |
3038 | /* decode response */ | |
3039 | ||
3040 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3041 | /* BB also check enough total bytes returned */ |
820a803f | 3042 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3043 | rc = -EIO; |
1da177e4 | 3044 | else { |
0e0d2cf3 | 3045 | bool is_unicode; |
460b9696 JL |
3046 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3047 | ||
3048 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3049 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3050 | |
0e0d2cf3 SF |
3051 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3052 | is_unicode = true; | |
3053 | else | |
3054 | is_unicode = false; | |
3055 | ||
737b758c | 3056 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3057 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3058 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3059 | if (!*symlinkinfo) |
460b9696 | 3060 | rc = -ENOMEM; |
1da177e4 LT |
3061 | } |
3062 | } | |
3063 | cifs_buf_release(pSMB); | |
3064 | if (rc == -EAGAIN) | |
3065 | goto querySymLinkRetry; | |
3066 | return rc; | |
3067 | } | |
3068 | ||
c52a9554 SF |
3069 | /* |
3070 | * Recent Windows versions now create symlinks more frequently | |
3071 | * and they use the "reparse point" mechanism below. We can of course | |
3072 | * do symlinks nicely to Samba and other servers which support the | |
3073 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3074 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3075 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3076 | * In the interim this code has been moved to its own config option so | |
3077 | * it is not compiled in by default until callers fixed up and more tested. | |
3078 | */ | |
1da177e4 | 3079 | int |
d244bf2d PS |
3080 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3081 | __u16 fid, char **symlinkinfo, | |
3082 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3083 | { |
3084 | int rc = 0; | |
3085 | int bytes_returned; | |
50c2f753 SF |
3086 | struct smb_com_transaction_ioctl_req *pSMB; |
3087 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3088 | bool is_unicode; |
3089 | unsigned int sub_len; | |
3090 | char *sub_start; | |
c31f3307 SF |
3091 | struct reparse_symlink_data *reparse_buf; |
3092 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3093 | __u32 data_offset, data_count; |
3094 | char *end_of_smb; | |
3095 | ||
3096 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3097 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3098 | (void **) &pSMBr); | |
3099 | if (rc) | |
3100 | return rc; | |
3101 | ||
3102 | pSMB->TotalParameterCount = 0 ; | |
3103 | pSMB->TotalDataCount = 0; | |
3104 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3105 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3106 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3107 | pSMB->MaxSetupCount = 4; |
3108 | pSMB->Reserved = 0; | |
3109 | pSMB->ParameterOffset = 0; | |
3110 | pSMB->DataCount = 0; | |
3111 | pSMB->DataOffset = 0; | |
3112 | pSMB->SetupCount = 4; | |
3113 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3114 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3115 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3116 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3117 | pSMB->IsRootFlag = 0; | |
3118 | pSMB->Fid = fid; /* file handle always le */ | |
3119 | pSMB->ByteCount = 0; | |
3120 | ||
3121 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3122 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3123 | if (rc) { | |
f96637be | 3124 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3125 | goto qreparse_out; |
3126 | } | |
3127 | ||
3128 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3129 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3130 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3131 | /* BB also check enough total bytes returned */ | |
3132 | rc = -EIO; /* bad smb */ | |
3133 | goto qreparse_out; | |
3134 | } | |
3135 | if (!data_count || (data_count > 2048)) { | |
3136 | rc = -EIO; | |
3137 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3138 | goto qreparse_out; | |
3139 | } | |
3140 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3141 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3142 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3143 | if ((char *)reparse_buf >= end_of_smb) { | |
3144 | rc = -EIO; | |
3145 | goto qreparse_out; | |
1da177e4 | 3146 | } |
c31f3307 SF |
3147 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3148 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3149 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3150 | ||
3151 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3152 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3153 | le64_to_cpu(posix_buf->InodeType)); | |
3154 | rc = -EOPNOTSUPP; | |
3155 | goto qreparse_out; | |
3156 | } | |
3157 | is_unicode = true; | |
3158 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3159 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3160 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3161 | rc = -EIO; | |
3162 | goto qreparse_out; | |
3163 | } | |
3164 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3165 | sub_len, is_unicode, nls_codepage); | |
3166 | goto qreparse_out; | |
3167 | } else if (reparse_buf->ReparseTag != | |
3168 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3169 | rc = -EOPNOTSUPP; | |
3170 | goto qreparse_out; | |
3171 | } | |
3172 | ||
3173 | /* Reparse tag is NTFS symlink */ | |
3174 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3175 | reparse_buf->PathBuffer; | |
3176 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3177 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3178 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3179 | rc = -EIO; | |
3180 | goto qreparse_out; | |
3181 | } | |
d244bf2d PS |
3182 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3183 | is_unicode = true; | |
3184 | else | |
3185 | is_unicode = false; | |
989c7e51 | 3186 | |
d244bf2d PS |
3187 | /* BB FIXME investigate remapping reserved chars here */ |
3188 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3189 | nls_codepage); | |
3190 | if (!*symlinkinfo) | |
3191 | rc = -ENOMEM; | |
1da177e4 | 3192 | qreparse_out: |
4a6d87f1 | 3193 | cifs_buf_release(pSMB); |
1da177e4 | 3194 | |
d244bf2d PS |
3195 | /* |
3196 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3197 | * since file handle passed in no longer valid. | |
3198 | */ | |
1da177e4 LT |
3199 | return rc; |
3200 | } | |
3201 | ||
c7f508a9 SF |
3202 | int |
3203 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3204 | __u16 fid) | |
3205 | { | |
3206 | int rc = 0; | |
3207 | int bytes_returned; | |
3208 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3209 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3210 | ||
3211 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3212 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3213 | (void **) &pSMBr); | |
3214 | if (rc) | |
3215 | return rc; | |
3216 | ||
3217 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3218 | ||
3219 | pSMB->TotalParameterCount = 0; | |
3220 | pSMB->TotalDataCount = __constant_cpu_to_le32(2); | |
3221 | pSMB->MaxParameterCount = 0; | |
3222 | pSMB->MaxDataCount = 0; | |
3223 | pSMB->MaxSetupCount = 4; | |
3224 | pSMB->Reserved = 0; | |
3225 | pSMB->ParameterOffset = 0; | |
3226 | pSMB->DataCount = __constant_cpu_to_le32(2); | |
3227 | pSMB->DataOffset = | |
3228 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3229 | compression_state) - 4); /* 84 */ | |
3230 | pSMB->SetupCount = 4; | |
3231 | pSMB->SubCommand = __constant_cpu_to_le16(NT_TRANSACT_IOCTL); | |
3232 | pSMB->ParameterCount = 0; | |
3233 | pSMB->FunctionCode = __constant_cpu_to_le32(FSCTL_SET_COMPRESSION); | |
3234 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3235 | pSMB->IsRootFlag = 0; | |
3236 | pSMB->Fid = fid; /* file handle always le */ | |
3237 | /* 3 byte pad, followed by 2 byte compress state */ | |
3238 | pSMB->ByteCount = __constant_cpu_to_le16(5); | |
3239 | inc_rfc1001_len(pSMB, 5); | |
3240 | ||
3241 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3242 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3243 | if (rc) | |
3244 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3245 | ||
3246 | cifs_buf_release(pSMB); | |
3247 | ||
3248 | /* | |
3249 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3250 | * since file handle passed in no longer valid. | |
3251 | */ | |
3252 | return rc; | |
3253 | } | |
3254 | ||
3255 | ||
1da177e4 LT |
3256 | #ifdef CONFIG_CIFS_POSIX |
3257 | ||
3258 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3259 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3260 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3261 | { |
3262 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3263 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3264 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3265 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3266 | /* |
3267 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3268 | ace->e_perm, ace->e_tag, ace->e_id); | |
3269 | */ | |
1da177e4 LT |
3270 | |
3271 | return; | |
3272 | } | |
3273 | ||
3274 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3275 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3276 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3277 | { |
3278 | int size = 0; | |
3279 | int i; | |
3280 | __u16 count; | |
50c2f753 SF |
3281 | struct cifs_posix_ace *pACE; |
3282 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3283 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3284 | |
3285 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3286 | return -EOPNOTSUPP; | |
3287 | ||
790fe579 | 3288 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3289 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3290 | pACE = &cifs_acl->ace_array[0]; | |
3291 | size = sizeof(struct cifs_posix_acl); | |
3292 | size += sizeof(struct cifs_posix_ace) * count; | |
3293 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3294 | if (size_of_data_area < size) { |
f96637be JP |
3295 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3296 | size_of_data_area, size); | |
1da177e4 LT |
3297 | return -EINVAL; |
3298 | } | |
790fe579 | 3299 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3300 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3301 | size = sizeof(struct cifs_posix_acl); | |
3302 | size += sizeof(struct cifs_posix_ace) * count; | |
3303 | /* skip past access ACEs to get to default ACEs */ | |
3304 | pACE = &cifs_acl->ace_array[count]; | |
3305 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3306 | size += sizeof(struct cifs_posix_ace) * count; | |
3307 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3308 | if (size_of_data_area < size) |
1da177e4 LT |
3309 | return -EINVAL; |
3310 | } else { | |
3311 | /* illegal type */ | |
3312 | return -EINVAL; | |
3313 | } | |
3314 | ||
3315 | size = posix_acl_xattr_size(count); | |
790fe579 | 3316 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3317 | /* used to query ACL EA size */ |
790fe579 | 3318 | } else if (size > buflen) { |
1da177e4 LT |
3319 | return -ERANGE; |
3320 | } else /* buffer big enough */ { | |
ff7feac9 | 3321 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3322 | for (i = 0; i < count ; i++) { |
3323 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3324 | pACE++; | |
1da177e4 LT |
3325 | } |
3326 | } | |
3327 | return size; | |
3328 | } | |
3329 | ||
50c2f753 SF |
3330 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3331 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3332 | { |
3333 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3334 | ||
ff7feac9 SF |
3335 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3336 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3337 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3338 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3339 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3340 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3341 | } else |
ff7feac9 | 3342 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3343 | /* |
3344 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3345 | ace->e_perm, ace->e_tag, ace->e_id); | |
3346 | */ | |
1da177e4 LT |
3347 | return rc; |
3348 | } | |
3349 | ||
3350 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3351 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3352 | const int buflen, const int acl_type) | |
1da177e4 LT |
3353 | { |
3354 | __u16 rc = 0; | |
50c2f753 SF |
3355 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3356 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3357 | int count; |
3358 | int i; | |
3359 | ||
790fe579 | 3360 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3361 | return 0; |
3362 | ||
3363 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3364 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3365 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3366 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3367 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3368 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3369 | return 0; |
3370 | } | |
3371 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3372 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3373 | cifs_acl->access_entry_count = cpu_to_le16(count); |
b1d93356 SF |
3374 | cifs_acl->default_entry_count = __constant_cpu_to_le16(0xFFFF); |
3375 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
ff7feac9 | 3376 | cifs_acl->default_entry_count = cpu_to_le16(count); |
b1d93356 SF |
3377 | cifs_acl->access_entry_count = __constant_cpu_to_le16(0xFFFF); |
3378 | } else { | |
f96637be | 3379 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3380 | return 0; |
3381 | } | |
50c2f753 | 3382 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3383 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3384 | &local_acl->a_entries[i]); | |
790fe579 | 3385 | if (rc != 0) { |
1da177e4 LT |
3386 | /* ACE not converted */ |
3387 | break; | |
3388 | } | |
3389 | } | |
790fe579 | 3390 | if (rc == 0) { |
1da177e4 LT |
3391 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3392 | rc += sizeof(struct cifs_posix_acl); | |
3393 | /* BB add check to make sure ACL does not overflow SMB */ | |
3394 | } | |
3395 | return rc; | |
3396 | } | |
3397 | ||
3398 | int | |
6d5786a3 | 3399 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3400 | const unsigned char *searchName, |
3401 | char *acl_inf, const int buflen, const int acl_type, | |
3402 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3403 | { |
3404 | /* SMB_QUERY_POSIX_ACL */ | |
3405 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3406 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3407 | int rc = 0; | |
3408 | int bytes_returned; | |
3409 | int name_len; | |
3410 | __u16 params, byte_count; | |
50c2f753 | 3411 | |
f96637be | 3412 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3413 | |
3414 | queryAclRetry: | |
3415 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3416 | (void **) &pSMBr); | |
3417 | if (rc) | |
3418 | return rc; | |
50c2f753 | 3419 | |
1da177e4 LT |
3420 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3421 | name_len = | |
acbbb76a SF |
3422 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3423 | searchName, PATH_MAX, nls_codepage, | |
3424 | remap); | |
1da177e4 LT |
3425 | name_len++; /* trailing null */ |
3426 | name_len *= 2; | |
3427 | pSMB->FileName[name_len] = 0; | |
3428 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3429 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3430 | name_len = strnlen(searchName, PATH_MAX); |
3431 | name_len++; /* trailing null */ | |
3432 | strncpy(pSMB->FileName, searchName, name_len); | |
3433 | } | |
3434 | ||
3435 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3436 | pSMB->TotalDataCount = 0; | |
3437 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3438 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3439 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3440 | pSMB->MaxSetupCount = 0; | |
3441 | pSMB->Reserved = 0; | |
3442 | pSMB->Flags = 0; | |
3443 | pSMB->Timeout = 0; | |
3444 | pSMB->Reserved2 = 0; | |
3445 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3446 | offsetof(struct smb_com_transaction2_qpi_req, |
3447 | InformationLevel) - 4); | |
1da177e4 LT |
3448 | pSMB->DataCount = 0; |
3449 | pSMB->DataOffset = 0; | |
3450 | pSMB->SetupCount = 1; | |
3451 | pSMB->Reserved3 = 0; | |
3452 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3453 | byte_count = params + 1 /* pad */ ; | |
3454 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3455 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3456 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3457 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3458 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3459 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3460 | ||
3461 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3462 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3463 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3464 | if (rc) { |
f96637be | 3465 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3466 | } else { |
3467 | /* decode response */ | |
50c2f753 | 3468 | |
1da177e4 | 3469 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3470 | /* BB also check enough total bytes returned */ |
820a803f | 3471 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3472 | rc = -EIO; /* bad smb */ |
3473 | else { | |
3474 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3475 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3476 | rc = cifs_copy_posix_acl(acl_inf, | |
3477 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3478 | buflen, acl_type, count); |
1da177e4 LT |
3479 | } |
3480 | } | |
3481 | cifs_buf_release(pSMB); | |
3482 | if (rc == -EAGAIN) | |
3483 | goto queryAclRetry; | |
3484 | return rc; | |
3485 | } | |
3486 | ||
3487 | int | |
6d5786a3 | 3488 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3489 | const unsigned char *fileName, |
3490 | const char *local_acl, const int buflen, | |
3491 | const int acl_type, | |
3492 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3493 | { |
3494 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3495 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3496 | char *parm_data; | |
3497 | int name_len; | |
3498 | int rc = 0; | |
3499 | int bytes_returned = 0; | |
3500 | __u16 params, byte_count, data_count, param_offset, offset; | |
3501 | ||
f96637be | 3502 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3503 | setAclRetry: |
3504 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3505 | (void **) &pSMBr); |
1da177e4 LT |
3506 | if (rc) |
3507 | return rc; | |
3508 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3509 | name_len = | |
acbbb76a SF |
3510 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3511 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3512 | name_len++; /* trailing null */ |
3513 | name_len *= 2; | |
50c2f753 | 3514 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3515 | name_len = strnlen(fileName, PATH_MAX); |
3516 | name_len++; /* trailing null */ | |
3517 | strncpy(pSMB->FileName, fileName, name_len); | |
3518 | } | |
3519 | params = 6 + name_len; | |
3520 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3521 | /* BB find max SMB size from sess */ |
3522 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3523 | pSMB->MaxSetupCount = 0; |
3524 | pSMB->Reserved = 0; | |
3525 | pSMB->Flags = 0; | |
3526 | pSMB->Timeout = 0; | |
3527 | pSMB->Reserved2 = 0; | |
3528 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3529 | InformationLevel) - 4; |
1da177e4 LT |
3530 | offset = param_offset + params; |
3531 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3532 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3533 | ||
3534 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3535 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3536 | |
790fe579 | 3537 | if (data_count == 0) { |
1da177e4 LT |
3538 | rc = -EOPNOTSUPP; |
3539 | goto setACLerrorExit; | |
3540 | } | |
3541 | pSMB->DataOffset = cpu_to_le16(offset); | |
3542 | pSMB->SetupCount = 1; | |
3543 | pSMB->Reserved3 = 0; | |
3544 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3545 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3546 | byte_count = 3 /* pad */ + params + data_count; | |
3547 | pSMB->DataCount = cpu_to_le16(data_count); | |
3548 | pSMB->TotalDataCount = pSMB->DataCount; | |
3549 | pSMB->ParameterCount = cpu_to_le16(params); | |
3550 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3551 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3552 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3553 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3554 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3555 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3556 | if (rc) |
f96637be | 3557 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3558 | |
3559 | setACLerrorExit: | |
3560 | cifs_buf_release(pSMB); | |
3561 | if (rc == -EAGAIN) | |
3562 | goto setAclRetry; | |
3563 | return rc; | |
3564 | } | |
3565 | ||
f654bac2 SF |
3566 | /* BB fix tabs in this function FIXME BB */ |
3567 | int | |
6d5786a3 | 3568 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3569 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3570 | { |
50c2f753 SF |
3571 | int rc = 0; |
3572 | struct smb_t2_qfi_req *pSMB = NULL; | |
3573 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3574 | int bytes_returned; | |
3575 | __u16 params, byte_count; | |
f654bac2 | 3576 | |
f96637be | 3577 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3578 | if (tcon == NULL) |
3579 | return -ENODEV; | |
f654bac2 SF |
3580 | |
3581 | GetExtAttrRetry: | |
790fe579 SF |
3582 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3583 | (void **) &pSMBr); | |
3584 | if (rc) | |
3585 | return rc; | |
f654bac2 | 3586 | |
ad7a2926 | 3587 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3588 | pSMB->t2.TotalDataCount = 0; |
3589 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3590 | /* BB find exact max data count below from sess structure BB */ | |
3591 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3592 | pSMB->t2.MaxSetupCount = 0; | |
3593 | pSMB->t2.Reserved = 0; | |
3594 | pSMB->t2.Flags = 0; | |
3595 | pSMB->t2.Timeout = 0; | |
3596 | pSMB->t2.Reserved2 = 0; | |
3597 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3598 | Fid) - 4); | |
3599 | pSMB->t2.DataCount = 0; | |
3600 | pSMB->t2.DataOffset = 0; | |
3601 | pSMB->t2.SetupCount = 1; | |
3602 | pSMB->t2.Reserved3 = 0; | |
3603 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3604 | byte_count = params + 1 /* pad */ ; | |
3605 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3606 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3607 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3608 | pSMB->Pad = 0; | |
f654bac2 | 3609 | pSMB->Fid = netfid; |
be8e3b00 | 3610 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3611 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3612 | ||
3613 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3614 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3615 | if (rc) { | |
f96637be | 3616 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3617 | } else { |
3618 | /* decode response */ | |
3619 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3620 | /* BB also check enough total bytes returned */ |
820a803f | 3621 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3622 | /* If rc should we check for EOPNOSUPP and |
3623 | disable the srvino flag? or in caller? */ | |
3624 | rc = -EIO; /* bad smb */ | |
3625 | else { | |
3626 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3627 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3628 | struct file_chattr_info *pfinfo; | |
3629 | /* BB Do we need a cast or hash here ? */ | |
3630 | if (count != 16) { | |
f96637be | 3631 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3632 | rc = -EIO; |
3633 | goto GetExtAttrOut; | |
3634 | } | |
3635 | pfinfo = (struct file_chattr_info *) | |
3636 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3637 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3638 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3639 | } |
3640 | } | |
f654bac2 | 3641 | GetExtAttrOut: |
790fe579 SF |
3642 | cifs_buf_release(pSMB); |
3643 | if (rc == -EAGAIN) | |
3644 | goto GetExtAttrRetry; | |
3645 | return rc; | |
f654bac2 SF |
3646 | } |
3647 | ||
f654bac2 | 3648 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3649 | |
79df1bae JL |
3650 | #ifdef CONFIG_CIFS_ACL |
3651 | /* | |
3652 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3653 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3654 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3655 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3656 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3657 | * by caller | |
3658 | */ | |
3659 | static int | |
3660 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3661 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3662 | void **ret_buf) |
3663 | { | |
3664 | int rc; | |
3665 | __u32 temp_offset; | |
3666 | struct smb_com_ntransact_req *pSMB; | |
3667 | ||
3668 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3669 | (void **)&pSMB); | |
3670 | if (rc) | |
3671 | return rc; | |
3672 | *ret_buf = (void *)pSMB; | |
3673 | pSMB->Reserved = 0; | |
3674 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3675 | pSMB->TotalDataCount = 0; | |
c974befa | 3676 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3677 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3678 | pSMB->DataCount = pSMB->TotalDataCount; | |
3679 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3680 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3681 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3682 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3683 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3684 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3685 | return 0; | |
3686 | } | |
3687 | ||
3688 | static int | |
3689 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3690 | __u32 *pparmlen, __u32 *pdatalen) | |
3691 | { | |
3692 | char *end_of_smb; | |
3693 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3694 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3695 | u16 bcc; |
79df1bae JL |
3696 | |
3697 | *pdatalen = 0; | |
3698 | *pparmlen = 0; | |
3699 | ||
3700 | if (buf == NULL) | |
3701 | return -EINVAL; | |
3702 | ||
3703 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3704 | ||
820a803f JL |
3705 | bcc = get_bcc(&pSMBr->hdr); |
3706 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3707 | (char *)&pSMBr->ByteCount; |
3708 | ||
3709 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3710 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3711 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3712 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3713 | ||
3714 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3715 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3716 | ||
3717 | /* should we also check that parm and data areas do not overlap? */ | |
3718 | if (*ppparm > end_of_smb) { | |
f96637be | 3719 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3720 | return -EINVAL; |
3721 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3722 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3723 | return -EINVAL; |
3724 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3725 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3726 | return -EINVAL; |
3727 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3728 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3729 | *ppdata, data_count, (data_count + *ppdata), | |
3730 | end_of_smb, pSMBr); | |
79df1bae | 3731 | return -EINVAL; |
820a803f | 3732 | } else if (parm_count + data_count > bcc) { |
f96637be | 3733 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3734 | return -EINVAL; |
3735 | } | |
3736 | *pdatalen = data_count; | |
3737 | *pparmlen = parm_count; | |
3738 | return 0; | |
3739 | } | |
3740 | ||
0a4b92c0 SF |
3741 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3742 | int | |
6d5786a3 | 3743 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3744 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3745 | { |
3746 | int rc = 0; | |
3747 | int buf_type = 0; | |
ad7a2926 | 3748 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3749 | struct kvec iov[1]; |
3750 | ||
f96637be | 3751 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3752 | |
630f3f0c SF |
3753 | *pbuflen = 0; |
3754 | *acl_inf = NULL; | |
3755 | ||
b9c7a2bb | 3756 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3757 | 8 /* parm len */, tcon, (void **) &pSMB); |
3758 | if (rc) | |
3759 | return rc; | |
3760 | ||
3761 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3762 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3763 | pSMB->MaxSetupCount = 0; | |
3764 | pSMB->Fid = fid; /* file handle always le */ | |
3765 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3766 | CIFS_ACL_DACL); | |
3767 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3768 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3769 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3770 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3771 | |
a761ac57 | 3772 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3773 | 0); |
44c58186 | 3774 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3775 | if (rc) { |
f96637be | 3776 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3777 | } else { /* decode response */ |
ad7a2926 | 3778 | __le32 *parm; |
630f3f0c SF |
3779 | __u32 parm_len; |
3780 | __u32 acl_len; | |
50c2f753 | 3781 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3782 | char *pdata; |
0a4b92c0 SF |
3783 | |
3784 | /* validate_nttransact */ | |
50c2f753 | 3785 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3786 | &pdata, &parm_len, pbuflen); |
790fe579 | 3787 | if (rc) |
0a4b92c0 SF |
3788 | goto qsec_out; |
3789 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3790 | ||
f96637be JP |
3791 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3792 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3793 | |
3794 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3795 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3796 | *pbuflen = 0; |
0a4b92c0 SF |
3797 | goto qsec_out; |
3798 | } | |
3799 | ||
3800 | /* BB check that data area is minimum length and as big as acl_len */ | |
3801 | ||
af6f4612 | 3802 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3803 | if (acl_len != *pbuflen) { |
f96637be JP |
3804 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3805 | acl_len, *pbuflen); | |
630f3f0c SF |
3806 | if (*pbuflen > acl_len) |
3807 | *pbuflen = acl_len; | |
3808 | } | |
0a4b92c0 | 3809 | |
630f3f0c SF |
3810 | /* check if buffer is big enough for the acl |
3811 | header followed by the smallest SID */ | |
3812 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3813 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3814 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3815 | rc = -EINVAL; |
3816 | *pbuflen = 0; | |
3817 | } else { | |
f7f7c185 | 3818 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3819 | if (*acl_inf == NULL) { |
3820 | *pbuflen = 0; | |
3821 | rc = -ENOMEM; | |
3822 | } | |
630f3f0c | 3823 | } |
0a4b92c0 SF |
3824 | } |
3825 | qsec_out: | |
790fe579 | 3826 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3827 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3828 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3829 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3830 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3831 | return rc; |
3832 | } | |
97837582 SF |
3833 | |
3834 | int | |
6d5786a3 | 3835 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3836 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3837 | { |
3838 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3839 | int rc = 0; | |
3840 | int bytes_returned = 0; | |
3841 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3842 | void *pSMBr; |
97837582 SF |
3843 | |
3844 | setCifsAclRetry: | |
b2a3ad9c | 3845 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3846 | if (rc) |
b2a3ad9c | 3847 | return rc; |
97837582 SF |
3848 | |
3849 | pSMB->MaxSetupCount = 0; | |
3850 | pSMB->Reserved = 0; | |
3851 | ||
3852 | param_count = 8; | |
3853 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3854 | data_count = acllen; | |
3855 | data_offset = param_offset + param_count; | |
3856 | byte_count = 3 /* pad */ + param_count; | |
3857 | ||
3858 | pSMB->DataCount = cpu_to_le32(data_count); | |
3859 | pSMB->TotalDataCount = pSMB->DataCount; | |
3860 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3861 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3862 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3863 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3864 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3865 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3866 | pSMB->SetupCount = 0; | |
3867 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3868 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3869 | ||
3870 | pSMB->Fid = fid; /* file handle always le */ | |
3871 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3872 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3873 | |
3874 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3875 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3876 | data_offset, pntsd, acllen); | |
be8e3b00 | 3877 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3878 | } else |
be8e3b00 | 3879 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3880 | |
3881 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3882 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3883 | ||
f96637be JP |
3884 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3885 | bytes_returned, rc); | |
97837582 | 3886 | if (rc) |
f96637be | 3887 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3888 | cifs_buf_release(pSMB); |
3889 | ||
3890 | if (rc == -EAGAIN) | |
3891 | goto setCifsAclRetry; | |
3892 | ||
3893 | return (rc); | |
3894 | } | |
3895 | ||
79df1bae | 3896 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3897 | |
6b8edfe0 SF |
3898 | /* Legacy Query Path Information call for lookup to old servers such |
3899 | as Win9x/WinME */ | |
68889f26 PS |
3900 | int |
3901 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3902 | const char *search_name, FILE_ALL_INFO *data, | |
3903 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3904 | { |
ad7a2926 SF |
3905 | QUERY_INFORMATION_REQ *pSMB; |
3906 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3907 | int rc = 0; |
3908 | int bytes_returned; | |
3909 | int name_len; | |
3910 | ||
f96637be | 3911 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3912 | QInfRetry: |
3913 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3914 | (void **) &pSMBr); |
6b8edfe0 SF |
3915 | if (rc) |
3916 | return rc; | |
3917 | ||
3918 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3919 | name_len = | |
acbbb76a | 3920 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3921 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3922 | remap); |
6b8edfe0 SF |
3923 | name_len++; /* trailing null */ |
3924 | name_len *= 2; | |
50c2f753 | 3925 | } else { |
68889f26 | 3926 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3927 | name_len++; /* trailing null */ |
68889f26 | 3928 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3929 | } |
3930 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3931 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3932 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3933 | pSMB->ByteCount = cpu_to_le16(name_len); |
3934 | ||
3935 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3936 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3937 | if (rc) { |
f96637be | 3938 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3939 | } else if (data) { |
1bd5bbcb SF |
3940 | struct timespec ts; |
3941 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3942 | |
3943 | /* decode response */ | |
1bd5bbcb | 3944 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3945 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3946 | ts.tv_nsec = 0; |
3947 | ts.tv_sec = time; | |
3948 | /* decode time fields */ | |
68889f26 PS |
3949 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3950 | data->LastWriteTime = data->ChangeTime; | |
3951 | data->LastAccessTime = 0; | |
3952 | data->AllocationSize = | |
70ca734a | 3953 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3954 | data->EndOfFile = data->AllocationSize; |
3955 | data->Attributes = | |
70ca734a | 3956 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3957 | } else |
3958 | rc = -EIO; /* bad buffer passed in */ | |
3959 | ||
3960 | cifs_buf_release(pSMB); | |
3961 | ||
3962 | if (rc == -EAGAIN) | |
3963 | goto QInfRetry; | |
3964 | ||
3965 | return rc; | |
3966 | } | |
3967 | ||
bcd5357f | 3968 | int |
6d5786a3 | 3969 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3970 | u16 netfid, FILE_ALL_INFO *pFindData) |
3971 | { | |
3972 | struct smb_t2_qfi_req *pSMB = NULL; | |
3973 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3974 | int rc = 0; | |
3975 | int bytes_returned; | |
3976 | __u16 params, byte_count; | |
3977 | ||
3978 | QFileInfoRetry: | |
3979 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3980 | (void **) &pSMBr); | |
3981 | if (rc) | |
3982 | return rc; | |
3983 | ||
3984 | params = 2 /* level */ + 2 /* fid */; | |
3985 | pSMB->t2.TotalDataCount = 0; | |
3986 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3987 | /* BB find exact max data count below from sess structure BB */ | |
3988 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3989 | pSMB->t2.MaxSetupCount = 0; | |
3990 | pSMB->t2.Reserved = 0; | |
3991 | pSMB->t2.Flags = 0; | |
3992 | pSMB->t2.Timeout = 0; | |
3993 | pSMB->t2.Reserved2 = 0; | |
3994 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3995 | Fid) - 4); | |
3996 | pSMB->t2.DataCount = 0; | |
3997 | pSMB->t2.DataOffset = 0; | |
3998 | pSMB->t2.SetupCount = 1; | |
3999 | pSMB->t2.Reserved3 = 0; | |
4000 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4001 | byte_count = params + 1 /* pad */ ; | |
4002 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4003 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4004 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4005 | pSMB->Pad = 0; | |
4006 | pSMB->Fid = netfid; | |
be8e3b00 | 4007 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4008 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4009 | |
bcd5357f JL |
4010 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4011 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4012 | if (rc) { | |
f96637be | 4013 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
bcd5357f JL |
4014 | } else { /* decode response */ |
4015 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4016 | |
bcd5357f JL |
4017 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4018 | rc = -EIO; | |
820a803f | 4019 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4020 | rc = -EIO; /* bad smb */ |
4021 | else if (pFindData) { | |
4022 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4023 | memcpy((char *) pFindData, | |
4024 | (char *) &pSMBr->hdr.Protocol + | |
4025 | data_offset, sizeof(FILE_ALL_INFO)); | |
4026 | } else | |
4027 | rc = -ENOMEM; | |
4028 | } | |
4029 | cifs_buf_release(pSMB); | |
4030 | if (rc == -EAGAIN) | |
4031 | goto QFileInfoRetry; | |
6b8edfe0 | 4032 | |
bcd5357f JL |
4033 | return rc; |
4034 | } | |
6b8edfe0 | 4035 | |
1da177e4 | 4036 | int |
6d5786a3 | 4037 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4038 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4039 | int legacy /* old style infolevel */, |
737b758c | 4040 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4041 | { |
68889f26 | 4042 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4043 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4044 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4045 | int rc = 0; | |
4046 | int bytes_returned; | |
4047 | int name_len; | |
4048 | __u16 params, byte_count; | |
4049 | ||
f96637be | 4050 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4051 | QPathInfoRetry: |
4052 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4053 | (void **) &pSMBr); | |
4054 | if (rc) | |
4055 | return rc; | |
4056 | ||
4057 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4058 | name_len = | |
68889f26 | 4059 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4060 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4061 | name_len++; /* trailing null */ |
4062 | name_len *= 2; | |
50c2f753 | 4063 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4064 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4065 | name_len++; /* trailing null */ |
68889f26 | 4066 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4067 | } |
4068 | ||
50c2f753 | 4069 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4070 | pSMB->TotalDataCount = 0; |
4071 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4072 | /* BB find exact max SMB PDU from sess structure BB */ |
4073 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4074 | pSMB->MaxSetupCount = 0; |
4075 | pSMB->Reserved = 0; | |
4076 | pSMB->Flags = 0; | |
4077 | pSMB->Timeout = 0; | |
4078 | pSMB->Reserved2 = 0; | |
4079 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4080 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4081 | pSMB->DataCount = 0; |
4082 | pSMB->DataOffset = 0; | |
4083 | pSMB->SetupCount = 1; | |
4084 | pSMB->Reserved3 = 0; | |
4085 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4086 | byte_count = params + 1 /* pad */ ; | |
4087 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4088 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4089 | if (legacy) |
acf1a1b1 SF |
4090 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4091 | else | |
4092 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4093 | pSMB->Reserved4 = 0; |
be8e3b00 | 4094 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4095 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4096 | ||
4097 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4098 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4099 | if (rc) { | |
f96637be | 4100 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4101 | } else { /* decode response */ |
4102 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4103 | ||
acf1a1b1 SF |
4104 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4105 | rc = -EIO; | |
820a803f | 4106 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4107 | rc = -EIO; /* bad smb */ |
820a803f | 4108 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4109 | rc = -EIO; /* 24 or 26 expected but we do not read |
4110 | last field */ | |
68889f26 | 4111 | else if (data) { |
acf1a1b1 | 4112 | int size; |
1da177e4 | 4113 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4114 | |
68889f26 PS |
4115 | /* |
4116 | * On legacy responses we do not read the last field, | |
4117 | * EAsize, fortunately since it varies by subdialect and | |
4118 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4119 | * bytes depending but we don't care here. | |
4120 | */ | |
ad7a2926 | 4121 | if (legacy) |
acf1a1b1 SF |
4122 | size = sizeof(FILE_INFO_STANDARD); |
4123 | else | |
4124 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4125 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4126 | data_offset, size); |
1da177e4 LT |
4127 | } else |
4128 | rc = -ENOMEM; | |
4129 | } | |
4130 | cifs_buf_release(pSMB); | |
4131 | if (rc == -EAGAIN) | |
4132 | goto QPathInfoRetry; | |
4133 | ||
4134 | return rc; | |
4135 | } | |
4136 | ||
c8634fd3 | 4137 | int |
6d5786a3 | 4138 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4139 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4140 | { | |
4141 | struct smb_t2_qfi_req *pSMB = NULL; | |
4142 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4143 | int rc = 0; | |
4144 | int bytes_returned; | |
4145 | __u16 params, byte_count; | |
4146 | ||
4147 | UnixQFileInfoRetry: | |
4148 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4149 | (void **) &pSMBr); | |
4150 | if (rc) | |
4151 | return rc; | |
4152 | ||
4153 | params = 2 /* level */ + 2 /* fid */; | |
4154 | pSMB->t2.TotalDataCount = 0; | |
4155 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4156 | /* BB find exact max data count below from sess structure BB */ | |
4157 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4158 | pSMB->t2.MaxSetupCount = 0; | |
4159 | pSMB->t2.Reserved = 0; | |
4160 | pSMB->t2.Flags = 0; | |
4161 | pSMB->t2.Timeout = 0; | |
4162 | pSMB->t2.Reserved2 = 0; | |
4163 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4164 | Fid) - 4); | |
4165 | pSMB->t2.DataCount = 0; | |
4166 | pSMB->t2.DataOffset = 0; | |
4167 | pSMB->t2.SetupCount = 1; | |
4168 | pSMB->t2.Reserved3 = 0; | |
4169 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4170 | byte_count = params + 1 /* pad */ ; | |
4171 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4172 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4173 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4174 | pSMB->Pad = 0; | |
4175 | pSMB->Fid = netfid; | |
be8e3b00 | 4176 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4177 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4178 | |
4179 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4180 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4181 | if (rc) { | |
f96637be | 4182 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
c8634fd3 JL |
4183 | } else { /* decode response */ |
4184 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4185 | ||
820a803f | 4186 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4187 | 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 |
4188 | rc = -EIO; /* bad smb */ |
4189 | } else { | |
4190 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4191 | memcpy((char *) pFindData, | |
4192 | (char *) &pSMBr->hdr.Protocol + | |
4193 | data_offset, | |
4194 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4195 | } | |
4196 | } | |
4197 | ||
4198 | cifs_buf_release(pSMB); | |
4199 | if (rc == -EAGAIN) | |
4200 | goto UnixQFileInfoRetry; | |
4201 | ||
4202 | return rc; | |
4203 | } | |
4204 | ||
1da177e4 | 4205 | int |
6d5786a3 | 4206 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4207 | const unsigned char *searchName, |
582d21e5 | 4208 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4209 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4210 | { |
4211 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4212 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4213 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4214 | int rc = 0; | |
4215 | int bytes_returned = 0; | |
4216 | int name_len; | |
4217 | __u16 params, byte_count; | |
4218 | ||
f96637be | 4219 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4220 | UnixQPathInfoRetry: |
4221 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4222 | (void **) &pSMBr); | |
4223 | if (rc) | |
4224 | return rc; | |
4225 | ||
4226 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4227 | name_len = | |
acbbb76a SF |
4228 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4229 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4230 | name_len++; /* trailing null */ |
4231 | name_len *= 2; | |
50c2f753 | 4232 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4233 | name_len = strnlen(searchName, PATH_MAX); |
4234 | name_len++; /* trailing null */ | |
4235 | strncpy(pSMB->FileName, searchName, name_len); | |
4236 | } | |
4237 | ||
50c2f753 | 4238 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4239 | pSMB->TotalDataCount = 0; |
4240 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4241 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4242 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4243 | pSMB->MaxSetupCount = 0; |
4244 | pSMB->Reserved = 0; | |
4245 | pSMB->Flags = 0; | |
4246 | pSMB->Timeout = 0; | |
4247 | pSMB->Reserved2 = 0; | |
4248 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4249 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4250 | pSMB->DataCount = 0; |
4251 | pSMB->DataOffset = 0; | |
4252 | pSMB->SetupCount = 1; | |
4253 | pSMB->Reserved3 = 0; | |
4254 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4255 | byte_count = params + 1 /* pad */ ; | |
4256 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4257 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4258 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4259 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4260 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4261 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4262 | ||
4263 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4264 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4265 | if (rc) { | |
f96637be | 4266 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4267 | } else { /* decode response */ |
4268 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4269 | ||
820a803f | 4270 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4271 | 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 |
4272 | rc = -EIO; /* bad smb */ |
4273 | } else { | |
4274 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4275 | memcpy((char *) pFindData, | |
4276 | (char *) &pSMBr->hdr.Protocol + | |
4277 | data_offset, | |
630f3f0c | 4278 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4279 | } |
4280 | } | |
4281 | cifs_buf_release(pSMB); | |
4282 | if (rc == -EAGAIN) | |
4283 | goto UnixQPathInfoRetry; | |
4284 | ||
4285 | return rc; | |
4286 | } | |
4287 | ||
1da177e4 LT |
4288 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4289 | int | |
6d5786a3 | 4290 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4291 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4292 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4293 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4294 | { |
4295 | /* level 257 SMB_ */ | |
4296 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4297 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4298 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4299 | int rc = 0; |
4300 | int bytes_returned = 0; | |
c052e2b4 | 4301 | int name_len, remap; |
1da177e4 | 4302 | __u16 params, byte_count; |
c052e2b4 | 4303 | struct nls_table *nls_codepage; |
1da177e4 | 4304 | |
f96637be | 4305 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4306 | |
4307 | findFirstRetry: | |
4308 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4309 | (void **) &pSMBr); | |
4310 | if (rc) | |
4311 | return rc; | |
4312 | ||
c052e2b4 SP |
4313 | nls_codepage = cifs_sb->local_nls; |
4314 | remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; | |
4315 | ||
1da177e4 LT |
4316 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4317 | name_len = | |
acbbb76a SF |
4318 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4319 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4320 | /* We can not add the asterik earlier in case |
4321 | it got remapped to 0xF03A as if it were part of the | |
4322 | directory name instead of a wildcard */ | |
1da177e4 | 4323 | name_len *= 2; |
c052e2b4 SP |
4324 | if (msearch) { |
4325 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4326 | pSMB->FileName[name_len+1] = 0; | |
4327 | pSMB->FileName[name_len+2] = '*'; | |
4328 | pSMB->FileName[name_len+3] = 0; | |
4329 | name_len += 4; /* now the trailing null */ | |
4330 | /* null terminate just in case */ | |
4331 | pSMB->FileName[name_len] = 0; | |
4332 | pSMB->FileName[name_len+1] = 0; | |
4333 | name_len += 2; | |
4334 | } | |
1da177e4 LT |
4335 | } else { /* BB add check for overrun of SMB buf BB */ |
4336 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4337 | /* BB fix here and in unicode clause above ie |
790fe579 | 4338 | if (name_len > buffersize-header) |
1da177e4 LT |
4339 | free buffer exit; BB */ |
4340 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4341 | if (msearch) { |
4342 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4343 | pSMB->FileName[name_len+1] = '*'; | |
4344 | pSMB->FileName[name_len+2] = 0; | |
4345 | name_len += 3; | |
4346 | } | |
1da177e4 LT |
4347 | } |
4348 | ||
4349 | params = 12 + name_len /* includes null */ ; | |
4350 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4351 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4352 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4353 | pSMB->MaxSetupCount = 0; |
4354 | pSMB->Reserved = 0; | |
4355 | pSMB->Flags = 0; | |
4356 | pSMB->Timeout = 0; | |
4357 | pSMB->Reserved2 = 0; | |
4358 | byte_count = params + 1 /* pad */ ; | |
4359 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4360 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4361 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4362 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4363 | - 4); | |
1da177e4 LT |
4364 | pSMB->DataCount = 0; |
4365 | pSMB->DataOffset = 0; | |
4366 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4367 | pSMB->Reserved3 = 0; | |
4368 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4369 | pSMB->SearchAttributes = | |
4370 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4371 | ATTR_DIRECTORY); | |
50c2f753 | 4372 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4373 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4374 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4375 | ||
4376 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4377 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4378 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4379 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4380 | ||
4381 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4382 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4383 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4384 | |
88274815 SF |
4385 | if (rc) {/* BB add logic to retry regular search if Unix search |
4386 | rejected unexpectedly by server */ | |
1da177e4 | 4387 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4388 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4389 | |
88274815 | 4390 | cifs_buf_release(pSMB); |
1da177e4 LT |
4391 | |
4392 | /* BB eventually could optimize out free and realloc of buf */ | |
4393 | /* for this case */ | |
4394 | if (rc == -EAGAIN) | |
4395 | goto findFirstRetry; | |
4396 | } else { /* decode response */ | |
4397 | /* BB remember to free buffer if error BB */ | |
4398 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4399 | if (rc == 0) { |
b77d753c SF |
4400 | unsigned int lnoff; |
4401 | ||
1da177e4 | 4402 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4403 | psrch_inf->unicode = true; |
1da177e4 | 4404 | else |
4b18f2a9 | 4405 | psrch_inf->unicode = false; |
1da177e4 LT |
4406 | |
4407 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4408 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4409 | psrch_inf->srch_entries_start = |
4410 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4411 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4412 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4413 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4414 | ||
790fe579 | 4415 | if (parms->EndofSearch) |
4b18f2a9 | 4416 | psrch_inf->endOfSearch = true; |
1da177e4 | 4417 | else |
4b18f2a9 | 4418 | psrch_inf->endOfSearch = false; |
1da177e4 | 4419 | |
50c2f753 SF |
4420 | psrch_inf->entries_in_buffer = |
4421 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4422 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4423 | psrch_inf->entries_in_buffer; |
b77d753c | 4424 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4425 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4426 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4427 | psrch_inf->last_entry = NULL; |
4428 | return rc; | |
4429 | } | |
4430 | ||
0752f152 | 4431 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4432 | lnoff; |
4433 | ||
c052e2b4 SP |
4434 | if (pnetfid) |
4435 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4436 | } else { |
4437 | cifs_buf_release(pSMB); | |
4438 | } | |
4439 | } | |
4440 | ||
4441 | return rc; | |
4442 | } | |
4443 | ||
6d5786a3 PS |
4444 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4445 | __u16 searchHandle, __u16 search_flags, | |
4446 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4447 | { |
4448 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4449 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4450 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4451 | char *response_data; |
4452 | int rc = 0; | |
9438fabb JL |
4453 | int bytes_returned; |
4454 | unsigned int name_len; | |
1da177e4 LT |
4455 | __u16 params, byte_count; |
4456 | ||
f96637be | 4457 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4458 | |
4b18f2a9 | 4459 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4460 | return -ENOENT; |
4461 | ||
4462 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4463 | (void **) &pSMBr); | |
4464 | if (rc) | |
4465 | return rc; | |
4466 | ||
50c2f753 | 4467 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4468 | byte_count = 0; |
4469 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4470 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4471 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4472 | pSMB->MaxSetupCount = 0; |
4473 | pSMB->Reserved = 0; | |
4474 | pSMB->Flags = 0; | |
4475 | pSMB->Timeout = 0; | |
4476 | pSMB->Reserved2 = 0; | |
4477 | pSMB->ParameterOffset = cpu_to_le16( | |
4478 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4479 | pSMB->DataCount = 0; | |
4480 | pSMB->DataOffset = 0; | |
4481 | pSMB->SetupCount = 1; | |
4482 | pSMB->Reserved3 = 0; | |
4483 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4484 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4485 | pSMB->SearchCount = | |
630f3f0c | 4486 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4487 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4488 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4489 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4490 | |
4491 | name_len = psrch_inf->resume_name_len; | |
4492 | params += name_len; | |
790fe579 | 4493 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4494 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4495 | byte_count += name_len; | |
ef6724e3 SF |
4496 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4497 | pSMB->ResumeFileName[name_len] = 0; | |
4498 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4499 | } else { |
4500 | rc = -EINVAL; | |
4501 | goto FNext2_err_exit; | |
4502 | } | |
4503 | byte_count = params + 1 /* pad */ ; | |
4504 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4505 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4506 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4507 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4508 | |
1da177e4 LT |
4509 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4510 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4511 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4512 | if (rc) { |
4513 | if (rc == -EBADF) { | |
4b18f2a9 | 4514 | psrch_inf->endOfSearch = true; |
6353450a | 4515 | cifs_buf_release(pSMB); |
50c2f753 | 4516 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4517 | } else |
f96637be | 4518 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4519 | } else { /* decode response */ |
4520 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4521 | |
790fe579 | 4522 | if (rc == 0) { |
b77d753c SF |
4523 | unsigned int lnoff; |
4524 | ||
1da177e4 LT |
4525 | /* BB fixme add lock for file (srch_info) struct here */ |
4526 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4527 | psrch_inf->unicode = true; |
1da177e4 | 4528 | else |
4b18f2a9 | 4529 | psrch_inf->unicode = false; |
1da177e4 LT |
4530 | response_data = (char *) &pSMBr->hdr.Protocol + |
4531 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4532 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4533 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4534 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4535 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4536 | cifs_small_buf_release( |
4537 | psrch_inf->ntwrk_buf_start); | |
4538 | else | |
4539 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4540 | psrch_inf->srch_entries_start = response_data; |
4541 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4542 | psrch_inf->smallBuf = 0; |
790fe579 | 4543 | if (parms->EndofSearch) |
4b18f2a9 | 4544 | psrch_inf->endOfSearch = true; |
1da177e4 | 4545 | else |
4b18f2a9 | 4546 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4547 | psrch_inf->entries_in_buffer = |
4548 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4549 | psrch_inf->index_of_last_entry += |
4550 | psrch_inf->entries_in_buffer; | |
b77d753c | 4551 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4552 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4553 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4554 | psrch_inf->last_entry = NULL; |
4555 | return rc; | |
4556 | } else | |
4557 | psrch_inf->last_entry = | |
4558 | psrch_inf->srch_entries_start + lnoff; | |
4559 | ||
f96637be JP |
4560 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4561 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4562 | |
4563 | /* BB fixme add unlock here */ | |
4564 | } | |
4565 | ||
4566 | } | |
4567 | ||
4568 | /* BB On error, should we leave previous search buf (and count and | |
4569 | last entry fields) intact or free the previous one? */ | |
4570 | ||
4571 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4572 | since file handle passed in no longer valid */ | |
4573 | FNext2_err_exit: | |
4574 | if (rc != 0) | |
4575 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4576 | return rc; |
4577 | } | |
4578 | ||
4579 | int | |
6d5786a3 | 4580 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4581 | const __u16 searchHandle) |
1da177e4 LT |
4582 | { |
4583 | int rc = 0; | |
4584 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4585 | |
f96637be | 4586 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4587 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4588 | ||
4589 | /* no sense returning error if session restarted | |
4590 | as file handle has been closed */ | |
790fe579 | 4591 | if (rc == -EAGAIN) |
1da177e4 LT |
4592 | return 0; |
4593 | if (rc) | |
4594 | return rc; | |
4595 | ||
1da177e4 LT |
4596 | pSMB->FileID = searchHandle; |
4597 | pSMB->ByteCount = 0; | |
792af7b0 | 4598 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4599 | if (rc) |
f96637be | 4600 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4601 | |
44c58186 | 4602 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4603 | |
4604 | /* Since session is dead, search handle closed on server already */ | |
4605 | if (rc == -EAGAIN) | |
4606 | rc = 0; | |
4607 | ||
4608 | return rc; | |
4609 | } | |
4610 | ||
1da177e4 | 4611 | int |
6d5786a3 | 4612 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4613 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4614 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4615 | { |
4616 | int rc = 0; | |
4617 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4618 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4619 | int name_len, bytes_returned; | |
4620 | __u16 params, byte_count; | |
4621 | ||
f96637be | 4622 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4623 | if (tcon == NULL) |
50c2f753 | 4624 | return -ENODEV; |
1da177e4 LT |
4625 | |
4626 | GetInodeNumberRetry: | |
4627 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4628 | (void **) &pSMBr); |
1da177e4 LT |
4629 | if (rc) |
4630 | return rc; | |
4631 | ||
1da177e4 LT |
4632 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4633 | name_len = | |
acbbb76a | 4634 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4635 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4636 | remap); |
1da177e4 LT |
4637 | name_len++; /* trailing null */ |
4638 | name_len *= 2; | |
50c2f753 | 4639 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4640 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4641 | name_len++; /* trailing null */ |
1208ef1f | 4642 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4643 | } |
4644 | ||
4645 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4646 | pSMB->TotalDataCount = 0; | |
4647 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4648 | /* BB find exact max data count below from sess structure BB */ | |
4649 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4650 | pSMB->MaxSetupCount = 0; | |
4651 | pSMB->Reserved = 0; | |
4652 | pSMB->Flags = 0; | |
4653 | pSMB->Timeout = 0; | |
4654 | pSMB->Reserved2 = 0; | |
4655 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4656 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4657 | pSMB->DataCount = 0; |
4658 | pSMB->DataOffset = 0; | |
4659 | pSMB->SetupCount = 1; | |
4660 | pSMB->Reserved3 = 0; | |
4661 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4662 | byte_count = params + 1 /* pad */ ; | |
4663 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4664 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4665 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4666 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4667 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4668 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4669 | ||
4670 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4671 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4672 | if (rc) { | |
f96637be | 4673 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4674 | } else { |
4675 | /* decode response */ | |
4676 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4677 | /* BB also check enough total bytes returned */ |
820a803f | 4678 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4679 | /* If rc should we check for EOPNOSUPP and |
4680 | disable the srvino flag? or in caller? */ | |
4681 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4682 | else { |
1da177e4 LT |
4683 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4684 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4685 | struct file_internal_info *pfinfo; |
1da177e4 | 4686 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4687 | if (count < 8) { |
f96637be | 4688 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4689 | rc = -EIO; |
4690 | goto GetInodeNumOut; | |
4691 | } | |
4692 | pfinfo = (struct file_internal_info *) | |
4693 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4694 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4695 | } |
4696 | } | |
4697 | GetInodeNumOut: | |
4698 | cifs_buf_release(pSMB); | |
4699 | if (rc == -EAGAIN) | |
4700 | goto GetInodeNumberRetry; | |
4701 | return rc; | |
4702 | } | |
1da177e4 | 4703 | |
fec4585f IM |
4704 | /* parses DFS refferal V3 structure |
4705 | * caller is responsible for freeing target_nodes | |
4706 | * returns: | |
4707 | * on success - 0 | |
4708 | * on failure - errno | |
4709 | */ | |
4710 | static int | |
a1fe78f1 | 4711 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4712 | unsigned int *num_of_nodes, |
4713 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4714 | const struct nls_table *nls_codepage, int remap, |
4715 | const char *searchName) | |
fec4585f IM |
4716 | { |
4717 | int i, rc = 0; | |
4718 | char *data_end; | |
4719 | bool is_unicode; | |
4720 | struct dfs_referral_level_3 *ref; | |
4721 | ||
5ca33c6a HH |
4722 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4723 | is_unicode = true; | |
4724 | else | |
4725 | is_unicode = false; | |
fec4585f IM |
4726 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4727 | ||
4728 | if (*num_of_nodes < 1) { | |
f96637be JP |
4729 | cifs_dbg(VFS, "num_referrals: must be at least > 0, but we get num_referrals = %d\n", |
4730 | *num_of_nodes); | |
fec4585f | 4731 | rc = -EINVAL; |
a1fe78f1 | 4732 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4733 | } |
4734 | ||
4735 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4736 | if (ref->VersionNumber != cpu_to_le16(3)) { |
f96637be JP |
4737 | cifs_dbg(VFS, "Referrals of V%d version are not supported, should be V3\n", |
4738 | le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4739 | rc = -EINVAL; |
a1fe78f1 | 4740 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4741 | } |
4742 | ||
4743 | /* get the upper boundary of the resp buffer */ | |
4744 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4745 | le16_to_cpu(pSMBr->t2.DataCount); | |
4746 | ||
f96637be JP |
4747 | cifs_dbg(FYI, "num_referrals: %d dfs flags: 0x%x ...\n", |
4748 | *num_of_nodes, le32_to_cpu(pSMBr->DFSFlags)); | |
fec4585f | 4749 | |
f96637be JP |
4750 | *target_nodes = kcalloc(*num_of_nodes, sizeof(struct dfs_info3_param), |
4751 | GFP_KERNEL); | |
fec4585f | 4752 | if (*target_nodes == NULL) { |
fec4585f | 4753 | rc = -ENOMEM; |
a1fe78f1 | 4754 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4755 | } |
4756 | ||
3ad2f3fb | 4757 | /* collect necessary data from referrals */ |
fec4585f IM |
4758 | for (i = 0; i < *num_of_nodes; i++) { |
4759 | char *temp; | |
4760 | int max_len; | |
4761 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4762 | ||
0e0d2cf3 | 4763 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4764 | if (is_unicode) { |
331c3135 JL |
4765 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4766 | GFP_KERNEL); | |
2920ee2b SF |
4767 | if (tmp == NULL) { |
4768 | rc = -ENOMEM; | |
4769 | goto parse_DFS_referrals_exit; | |
4770 | } | |
acbbb76a SF |
4771 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4772 | PATH_MAX, nls_codepage, remap); | |
4773 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4774 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4775 | nls_codepage); |
4776 | kfree(tmp); | |
4777 | } else | |
4778 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4779 | ||
fec4585f IM |
4780 | node->server_type = le16_to_cpu(ref->ServerType); |
4781 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4782 | ||
4783 | /* copy DfsPath */ | |
4784 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4785 | max_len = data_end - temp; | |
acbbb76a SF |
4786 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4787 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4788 | if (!node->path_name) { |
4789 | rc = -ENOMEM; | |
a1fe78f1 | 4790 | goto parse_DFS_referrals_exit; |
066ce689 | 4791 | } |
fec4585f IM |
4792 | |
4793 | /* copy link target UNC */ | |
4794 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4795 | max_len = data_end - temp; | |
acbbb76a SF |
4796 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4797 | is_unicode, nls_codepage); | |
d8f2799b | 4798 | if (!node->node_name) { |
d8e2f53a | 4799 | rc = -ENOMEM; |
d8f2799b SM |
4800 | goto parse_DFS_referrals_exit; |
4801 | } | |
4802 | ||
4803 | ref++; | |
fec4585f IM |
4804 | } |
4805 | ||
a1fe78f1 | 4806 | parse_DFS_referrals_exit: |
fec4585f IM |
4807 | if (rc) { |
4808 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4809 | *target_nodes = NULL; | |
4810 | *num_of_nodes = 0; | |
4811 | } | |
4812 | return rc; | |
4813 | } | |
4814 | ||
1da177e4 | 4815 | int |
6d5786a3 | 4816 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4817 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4818 | unsigned int *num_of_nodes, |
737b758c | 4819 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4820 | { |
4821 | /* TRANS2_GET_DFS_REFERRAL */ | |
4822 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4823 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4824 | int rc = 0; |
4825 | int bytes_returned; | |
4826 | int name_len; | |
1da177e4 | 4827 | __u16 params, byte_count; |
c2cf07d5 SF |
4828 | *num_of_nodes = 0; |
4829 | *target_nodes = NULL; | |
1da177e4 | 4830 | |
f96637be | 4831 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4832 | if (ses == NULL) |
4833 | return -ENODEV; | |
4834 | getDFSRetry: | |
4835 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4836 | (void **) &pSMBr); | |
4837 | if (rc) | |
4838 | return rc; | |
50c2f753 SF |
4839 | |
4840 | /* server pointer checked in called function, | |
1982c344 | 4841 | but should never be null here anyway */ |
88257360 | 4842 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4843 | pSMB->hdr.Tid = ses->ipc_tid; |
4844 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4845 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4846 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4847 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4848 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4849 | |
4850 | if (ses->capabilities & CAP_UNICODE) { | |
4851 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4852 | name_len = | |
acbbb76a | 4853 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4854 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4855 | remap); |
1da177e4 LT |
4856 | name_len++; /* trailing null */ |
4857 | name_len *= 2; | |
50c2f753 | 4858 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4859 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4860 | name_len++; /* trailing null */ |
b669f33c | 4861 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4862 | } |
4863 | ||
38d77c50 JL |
4864 | if (ses->server && ses->server->sign) |
4865 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1a4e15a0 | 4866 | |
50c2f753 | 4867 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4868 | |
1da177e4 LT |
4869 | params = 2 /* level */ + name_len /*includes null */ ; |
4870 | pSMB->TotalDataCount = 0; | |
4871 | pSMB->DataCount = 0; | |
4872 | pSMB->DataOffset = 0; | |
4873 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4874 | /* BB find exact max SMB PDU from sess structure BB */ |
4875 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4876 | pSMB->MaxSetupCount = 0; |
4877 | pSMB->Reserved = 0; | |
4878 | pSMB->Flags = 0; | |
4879 | pSMB->Timeout = 0; | |
4880 | pSMB->Reserved2 = 0; | |
4881 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4882 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4883 | pSMB->SetupCount = 1; |
4884 | pSMB->Reserved3 = 0; | |
4885 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4886 | byte_count = params + 3 /* pad */ ; | |
4887 | pSMB->ParameterCount = cpu_to_le16(params); | |
4888 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4889 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4890 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4891 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4892 | ||
4893 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4894 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4895 | if (rc) { | |
f96637be | 4896 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4897 | goto GetDFSRefExit; |
4898 | } | |
4899 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4900 | |
c2cf07d5 | 4901 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4902 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4903 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4904 | goto GetDFSRefExit; |
4905 | } | |
c2cf07d5 | 4906 | |
f96637be JP |
4907 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4908 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4909 | |
fec4585f | 4910 | /* parse returned result into more usable form */ |
a1fe78f1 | 4911 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4912 | target_nodes, nls_codepage, remap, |
b669f33c | 4913 | search_name); |
c2cf07d5 | 4914 | |
1da177e4 | 4915 | GetDFSRefExit: |
0d817bc0 | 4916 | cifs_buf_release(pSMB); |
1da177e4 LT |
4917 | |
4918 | if (rc == -EAGAIN) | |
4919 | goto getDFSRetry; | |
4920 | ||
4921 | return rc; | |
4922 | } | |
4923 | ||
20962438 SF |
4924 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4925 | int | |
6d5786a3 PS |
4926 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4927 | struct kstatfs *FSData) | |
20962438 SF |
4928 | { |
4929 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4930 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4931 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4932 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4933 | int rc = 0; | |
4934 | int bytes_returned = 0; | |
4935 | __u16 params, byte_count; | |
4936 | ||
f96637be | 4937 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4938 | oldQFSInfoRetry: |
4939 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4940 | (void **) &pSMBr); | |
4941 | if (rc) | |
4942 | return rc; | |
20962438 SF |
4943 | |
4944 | params = 2; /* level */ | |
4945 | pSMB->TotalDataCount = 0; | |
4946 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4947 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4948 | pSMB->MaxSetupCount = 0; | |
4949 | pSMB->Reserved = 0; | |
4950 | pSMB->Flags = 0; | |
4951 | pSMB->Timeout = 0; | |
4952 | pSMB->Reserved2 = 0; | |
4953 | byte_count = params + 1 /* pad */ ; | |
4954 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4955 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4956 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4957 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4958 | pSMB->DataCount = 0; | |
4959 | pSMB->DataOffset = 0; | |
4960 | pSMB->SetupCount = 1; | |
4961 | pSMB->Reserved3 = 0; | |
4962 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4963 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4964 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4965 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4966 | ||
4967 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4968 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4969 | if (rc) { | |
f96637be | 4970 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4971 | } else { /* decode response */ |
4972 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4973 | ||
820a803f | 4974 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4975 | rc = -EIO; /* bad smb */ |
4976 | else { | |
4977 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4978 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4979 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4980 | |
50c2f753 | 4981 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4982 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4983 | FSData->f_bsize = | |
4984 | le16_to_cpu(response_data->BytesPerSector) * | |
4985 | le32_to_cpu(response_data-> | |
4986 | SectorsPerAllocationUnit); | |
4987 | FSData->f_blocks = | |
50c2f753 | 4988 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4989 | FSData->f_bfree = FSData->f_bavail = |
4990 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4991 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4992 | (unsigned long long)FSData->f_blocks, | |
4993 | (unsigned long long)FSData->f_bfree, | |
4994 | FSData->f_bsize); | |
20962438 SF |
4995 | } |
4996 | } | |
4997 | cifs_buf_release(pSMB); | |
4998 | ||
4999 | if (rc == -EAGAIN) | |
5000 | goto oldQFSInfoRetry; | |
5001 | ||
5002 | return rc; | |
5003 | } | |
5004 | ||
1da177e4 | 5005 | int |
6d5786a3 PS |
5006 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5007 | struct kstatfs *FSData) | |
1da177e4 LT |
5008 | { |
5009 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5010 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5011 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5012 | FILE_SYSTEM_INFO *response_data; | |
5013 | int rc = 0; | |
5014 | int bytes_returned = 0; | |
5015 | __u16 params, byte_count; | |
5016 | ||
f96637be | 5017 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5018 | QFSInfoRetry: |
5019 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5020 | (void **) &pSMBr); | |
5021 | if (rc) | |
5022 | return rc; | |
5023 | ||
5024 | params = 2; /* level */ | |
5025 | pSMB->TotalDataCount = 0; | |
5026 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5027 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5028 | pSMB->MaxSetupCount = 0; |
5029 | pSMB->Reserved = 0; | |
5030 | pSMB->Flags = 0; | |
5031 | pSMB->Timeout = 0; | |
5032 | pSMB->Reserved2 = 0; | |
5033 | byte_count = params + 1 /* pad */ ; | |
5034 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5035 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5036 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5037 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5038 | pSMB->DataCount = 0; |
5039 | pSMB->DataOffset = 0; | |
5040 | pSMB->SetupCount = 1; | |
5041 | pSMB->Reserved3 = 0; | |
5042 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5043 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5044 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5045 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5046 | ||
5047 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5048 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5049 | if (rc) { | |
f96637be | 5050 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5051 | } else { /* decode response */ |
50c2f753 | 5052 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5053 | |
820a803f | 5054 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5055 | rc = -EIO; /* bad smb */ |
5056 | else { | |
5057 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5058 | |
5059 | response_data = | |
5060 | (FILE_SYSTEM_INFO | |
5061 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5062 | data_offset); | |
5063 | FSData->f_bsize = | |
5064 | le32_to_cpu(response_data->BytesPerSector) * | |
5065 | le32_to_cpu(response_data-> | |
5066 | SectorsPerAllocationUnit); | |
5067 | FSData->f_blocks = | |
5068 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5069 | FSData->f_bfree = FSData->f_bavail = | |
5070 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5071 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5072 | (unsigned long long)FSData->f_blocks, | |
5073 | (unsigned long long)FSData->f_bfree, | |
5074 | FSData->f_bsize); | |
1da177e4 LT |
5075 | } |
5076 | } | |
5077 | cifs_buf_release(pSMB); | |
5078 | ||
5079 | if (rc == -EAGAIN) | |
5080 | goto QFSInfoRetry; | |
5081 | ||
5082 | return rc; | |
5083 | } | |
5084 | ||
5085 | int | |
6d5786a3 | 5086 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5087 | { |
5088 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5089 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5090 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5091 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5092 | int rc = 0; | |
5093 | int bytes_returned = 0; | |
5094 | __u16 params, byte_count; | |
5095 | ||
f96637be | 5096 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5097 | QFSAttributeRetry: |
5098 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5099 | (void **) &pSMBr); | |
5100 | if (rc) | |
5101 | return rc; | |
5102 | ||
5103 | params = 2; /* level */ | |
5104 | pSMB->TotalDataCount = 0; | |
5105 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5106 | /* BB find exact max SMB PDU from sess structure BB */ |
5107 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5108 | pSMB->MaxSetupCount = 0; |
5109 | pSMB->Reserved = 0; | |
5110 | pSMB->Flags = 0; | |
5111 | pSMB->Timeout = 0; | |
5112 | pSMB->Reserved2 = 0; | |
5113 | byte_count = params + 1 /* pad */ ; | |
5114 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5115 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5116 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5117 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5118 | pSMB->DataCount = 0; |
5119 | pSMB->DataOffset = 0; | |
5120 | pSMB->SetupCount = 1; | |
5121 | pSMB->Reserved3 = 0; | |
5122 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5123 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5124 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5125 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5126 | ||
5127 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5128 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5129 | if (rc) { | |
f96637be | 5130 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5131 | } else { /* decode response */ |
5132 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5133 | ||
820a803f | 5134 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5135 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5136 | rc = -EIO; /* bad smb */ |
5137 | } else { | |
5138 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5139 | response_data = | |
5140 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5141 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5142 | data_offset); | |
5143 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5144 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5145 | } |
5146 | } | |
5147 | cifs_buf_release(pSMB); | |
5148 | ||
5149 | if (rc == -EAGAIN) | |
5150 | goto QFSAttributeRetry; | |
5151 | ||
5152 | return rc; | |
5153 | } | |
5154 | ||
5155 | int | |
6d5786a3 | 5156 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5157 | { |
5158 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5159 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5160 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5161 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5162 | int rc = 0; | |
5163 | int bytes_returned = 0; | |
5164 | __u16 params, byte_count; | |
5165 | ||
f96637be | 5166 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5167 | QFSDeviceRetry: |
5168 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5169 | (void **) &pSMBr); | |
5170 | if (rc) | |
5171 | return rc; | |
5172 | ||
5173 | params = 2; /* level */ | |
5174 | pSMB->TotalDataCount = 0; | |
5175 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5176 | /* BB find exact max SMB PDU from sess structure BB */ |
5177 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5178 | pSMB->MaxSetupCount = 0; |
5179 | pSMB->Reserved = 0; | |
5180 | pSMB->Flags = 0; | |
5181 | pSMB->Timeout = 0; | |
5182 | pSMB->Reserved2 = 0; | |
5183 | byte_count = params + 1 /* pad */ ; | |
5184 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5185 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5186 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5187 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5188 | |
5189 | pSMB->DataCount = 0; | |
5190 | pSMB->DataOffset = 0; | |
5191 | pSMB->SetupCount = 1; | |
5192 | pSMB->Reserved3 = 0; | |
5193 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5194 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5195 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5196 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5197 | ||
5198 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5199 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5200 | if (rc) { | |
f96637be | 5201 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5202 | } else { /* decode response */ |
5203 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5204 | ||
820a803f JL |
5205 | if (rc || get_bcc(&pSMBr->hdr) < |
5206 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5207 | rc = -EIO; /* bad smb */ |
5208 | else { | |
5209 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5210 | response_data = | |
737b758c SF |
5211 | (FILE_SYSTEM_DEVICE_INFO *) |
5212 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5213 | data_offset); |
5214 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5215 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5216 | } |
5217 | } | |
5218 | cifs_buf_release(pSMB); | |
5219 | ||
5220 | if (rc == -EAGAIN) | |
5221 | goto QFSDeviceRetry; | |
5222 | ||
5223 | return rc; | |
5224 | } | |
5225 | ||
5226 | int | |
6d5786a3 | 5227 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5228 | { |
5229 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5230 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5231 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5232 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5233 | int rc = 0; | |
5234 | int bytes_returned = 0; | |
5235 | __u16 params, byte_count; | |
5236 | ||
f96637be | 5237 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5238 | QFSUnixRetry: |
f569599a JL |
5239 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5240 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5241 | if (rc) |
5242 | return rc; | |
5243 | ||
5244 | params = 2; /* level */ | |
5245 | pSMB->TotalDataCount = 0; | |
5246 | pSMB->DataCount = 0; | |
5247 | pSMB->DataOffset = 0; | |
5248 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5249 | /* BB find exact max SMB PDU from sess structure BB */ |
5250 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5251 | pSMB->MaxSetupCount = 0; |
5252 | pSMB->Reserved = 0; | |
5253 | pSMB->Flags = 0; | |
5254 | pSMB->Timeout = 0; | |
5255 | pSMB->Reserved2 = 0; | |
5256 | byte_count = params + 1 /* pad */ ; | |
5257 | pSMB->ParameterCount = cpu_to_le16(params); | |
5258 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5259 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5260 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5261 | pSMB->SetupCount = 1; |
5262 | pSMB->Reserved3 = 0; | |
5263 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5264 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5265 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5266 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5267 | ||
5268 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5269 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5270 | if (rc) { | |
f96637be | 5271 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5272 | } else { /* decode response */ |
5273 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5274 | ||
820a803f | 5275 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5276 | rc = -EIO; /* bad smb */ |
5277 | } else { | |
5278 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5279 | response_data = | |
5280 | (FILE_SYSTEM_UNIX_INFO | |
5281 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5282 | data_offset); | |
5283 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5284 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5285 | } |
5286 | } | |
5287 | cifs_buf_release(pSMB); | |
5288 | ||
5289 | if (rc == -EAGAIN) | |
5290 | goto QFSUnixRetry; | |
5291 | ||
5292 | ||
5293 | return rc; | |
5294 | } | |
5295 | ||
ac67055e | 5296 | int |
6d5786a3 | 5297 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5298 | { |
5299 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5300 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5301 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5302 | int rc = 0; | |
5303 | int bytes_returned = 0; | |
5304 | __u16 params, param_offset, offset, byte_count; | |
5305 | ||
f96637be | 5306 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5307 | SETFSUnixRetry: |
f26282c9 | 5308 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5309 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5310 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5311 | if (rc) |
5312 | return rc; | |
5313 | ||
5314 | params = 4; /* 2 bytes zero followed by info level. */ | |
5315 | pSMB->MaxSetupCount = 0; | |
5316 | pSMB->Reserved = 0; | |
5317 | pSMB->Flags = 0; | |
5318 | pSMB->Timeout = 0; | |
5319 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5320 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5321 | - 4; | |
ac67055e JA |
5322 | offset = param_offset + params; |
5323 | ||
5324 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5325 | /* BB find exact max SMB PDU from sess structure BB */ |
5326 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5327 | pSMB->SetupCount = 1; |
5328 | pSMB->Reserved3 = 0; | |
5329 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5330 | byte_count = 1 /* pad */ + params + 12; | |
5331 | ||
5332 | pSMB->DataCount = cpu_to_le16(12); | |
5333 | pSMB->ParameterCount = cpu_to_le16(params); | |
5334 | pSMB->TotalDataCount = pSMB->DataCount; | |
5335 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5336 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5337 | pSMB->DataOffset = cpu_to_le16(offset); | |
5338 | ||
5339 | /* Params. */ | |
5340 | pSMB->FileNum = 0; | |
5341 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5342 | ||
5343 | /* Data. */ | |
5344 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5345 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5346 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5347 | ||
be8e3b00 | 5348 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5349 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5350 | ||
5351 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5352 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5353 | if (rc) { | |
f96637be | 5354 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5355 | } else { /* decode response */ |
5356 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5357 | if (rc) |
ac67055e | 5358 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5359 | } |
5360 | cifs_buf_release(pSMB); | |
5361 | ||
5362 | if (rc == -EAGAIN) | |
5363 | goto SETFSUnixRetry; | |
5364 | ||
5365 | return rc; | |
5366 | } | |
5367 | ||
5368 | ||
1da177e4 LT |
5369 | |
5370 | int | |
6d5786a3 | 5371 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5372 | struct kstatfs *FSData) |
1da177e4 LT |
5373 | { |
5374 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5375 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5376 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5377 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5378 | int rc = 0; | |
5379 | int bytes_returned = 0; | |
5380 | __u16 params, byte_count; | |
5381 | ||
f96637be | 5382 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5383 | QFSPosixRetry: |
5384 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5385 | (void **) &pSMBr); | |
5386 | if (rc) | |
5387 | return rc; | |
5388 | ||
5389 | params = 2; /* level */ | |
5390 | pSMB->TotalDataCount = 0; | |
5391 | pSMB->DataCount = 0; | |
5392 | pSMB->DataOffset = 0; | |
5393 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5394 | /* BB find exact max SMB PDU from sess structure BB */ |
5395 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5396 | pSMB->MaxSetupCount = 0; |
5397 | pSMB->Reserved = 0; | |
5398 | pSMB->Flags = 0; | |
5399 | pSMB->Timeout = 0; | |
5400 | pSMB->Reserved2 = 0; | |
5401 | byte_count = params + 1 /* pad */ ; | |
5402 | pSMB->ParameterCount = cpu_to_le16(params); | |
5403 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5404 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5405 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5406 | pSMB->SetupCount = 1; |
5407 | pSMB->Reserved3 = 0; | |
5408 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5409 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5410 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5411 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5412 | ||
5413 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5414 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5415 | if (rc) { | |
f96637be | 5416 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5417 | } else { /* decode response */ |
5418 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5419 | ||
820a803f | 5420 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5421 | rc = -EIO; /* bad smb */ |
5422 | } else { | |
5423 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5424 | response_data = | |
5425 | (FILE_SYSTEM_POSIX_INFO | |
5426 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5427 | data_offset); | |
5428 | FSData->f_bsize = | |
5429 | le32_to_cpu(response_data->BlockSize); | |
5430 | FSData->f_blocks = | |
5431 | le64_to_cpu(response_data->TotalBlocks); | |
5432 | FSData->f_bfree = | |
5433 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5434 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5435 | FSData->f_bavail = FSData->f_bfree; |
5436 | } else { | |
5437 | FSData->f_bavail = | |
50c2f753 | 5438 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5439 | } |
790fe579 | 5440 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5441 | FSData->f_files = |
50c2f753 | 5442 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5443 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5444 | FSData->f_ffree = |
50c2f753 | 5445 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5446 | } |
5447 | } | |
5448 | cifs_buf_release(pSMB); | |
5449 | ||
5450 | if (rc == -EAGAIN) | |
5451 | goto QFSPosixRetry; | |
5452 | ||
5453 | return rc; | |
5454 | } | |
5455 | ||
5456 | ||
d1433418 PS |
5457 | /* |
5458 | * We can not use write of zero bytes trick to set file size due to need for | |
5459 | * large file support. Also note that this SetPathInfo is preferred to | |
5460 | * SetFileInfo based method in next routine which is only needed to work around | |
5461 | * a sharing violation bugin Samba which this routine can run into. | |
5462 | */ | |
1da177e4 | 5463 | int |
6d5786a3 | 5464 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5465 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5466 | bool set_allocation) | |
1da177e4 LT |
5467 | { |
5468 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5469 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5470 | struct file_end_of_file_info *parm_data; | |
5471 | int name_len; | |
5472 | int rc = 0; | |
5473 | int bytes_returned = 0; | |
d1433418 PS |
5474 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
5475 | ||
1da177e4 LT |
5476 | __u16 params, byte_count, data_count, param_offset, offset; |
5477 | ||
f96637be | 5478 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5479 | SetEOFRetry: |
5480 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5481 | (void **) &pSMBr); | |
5482 | if (rc) | |
5483 | return rc; | |
5484 | ||
5485 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5486 | name_len = | |
d1433418 PS |
5487 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5488 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5489 | name_len++; /* trailing null */ |
5490 | name_len *= 2; | |
3e87d803 | 5491 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5492 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5493 | name_len++; /* trailing null */ |
d1433418 | 5494 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5495 | } |
5496 | params = 6 + name_len; | |
26f57364 | 5497 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5498 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5499 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5500 | pSMB->MaxSetupCount = 0; |
5501 | pSMB->Reserved = 0; | |
5502 | pSMB->Flags = 0; | |
5503 | pSMB->Timeout = 0; | |
5504 | pSMB->Reserved2 = 0; | |
5505 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5506 | InformationLevel) - 4; |
1da177e4 | 5507 | offset = param_offset + params; |
d1433418 | 5508 | if (set_allocation) { |
50c2f753 SF |
5509 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5510 | pSMB->InformationLevel = | |
5511 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5512 | else | |
5513 | pSMB->InformationLevel = | |
5514 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5515 | } else /* Set File Size */ { | |
1da177e4 LT |
5516 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5517 | pSMB->InformationLevel = | |
50c2f753 | 5518 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5519 | else |
5520 | pSMB->InformationLevel = | |
50c2f753 | 5521 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5522 | } |
5523 | ||
5524 | parm_data = | |
5525 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5526 | offset); | |
5527 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5528 | pSMB->DataOffset = cpu_to_le16(offset); | |
5529 | pSMB->SetupCount = 1; | |
5530 | pSMB->Reserved3 = 0; | |
5531 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5532 | byte_count = 3 /* pad */ + params + data_count; | |
5533 | pSMB->DataCount = cpu_to_le16(data_count); | |
5534 | pSMB->TotalDataCount = pSMB->DataCount; | |
5535 | pSMB->ParameterCount = cpu_to_le16(params); | |
5536 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5537 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5538 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5539 | parm_data->FileSize = cpu_to_le64(size); |
5540 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5541 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5542 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5543 | if (rc) |
f96637be | 5544 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5545 | |
5546 | cifs_buf_release(pSMB); | |
5547 | ||
5548 | if (rc == -EAGAIN) | |
5549 | goto SetEOFRetry; | |
5550 | ||
5551 | return rc; | |
5552 | } | |
5553 | ||
5554 | int | |
d1433418 PS |
5555 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5556 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5557 | { |
5558 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5559 | struct file_end_of_file_info *parm_data; |
5560 | int rc = 0; | |
1da177e4 LT |
5561 | __u16 params, param_offset, offset, byte_count, count; |
5562 | ||
f96637be JP |
5563 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5564 | (long long)size); | |
cd63499c SF |
5565 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5566 | ||
1da177e4 LT |
5567 | if (rc) |
5568 | return rc; | |
5569 | ||
d1433418 PS |
5570 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5571 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5572 | |
1da177e4 LT |
5573 | params = 6; |
5574 | pSMB->MaxSetupCount = 0; | |
5575 | pSMB->Reserved = 0; | |
5576 | pSMB->Flags = 0; | |
5577 | pSMB->Timeout = 0; | |
5578 | pSMB->Reserved2 = 0; | |
5579 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5580 | offset = param_offset + params; | |
5581 | ||
1da177e4 LT |
5582 | count = sizeof(struct file_end_of_file_info); |
5583 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5584 | /* BB find exact max SMB PDU from sess structure BB */ |
5585 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5586 | pSMB->SetupCount = 1; |
5587 | pSMB->Reserved3 = 0; | |
5588 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5589 | byte_count = 3 /* pad */ + params + count; | |
5590 | pSMB->DataCount = cpu_to_le16(count); | |
5591 | pSMB->ParameterCount = cpu_to_le16(params); | |
5592 | pSMB->TotalDataCount = pSMB->DataCount; | |
5593 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5594 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5595 | parm_data = | |
50c2f753 SF |
5596 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5597 | + offset); | |
1da177e4 LT |
5598 | pSMB->DataOffset = cpu_to_le16(offset); |
5599 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5600 | pSMB->Fid = cfile->fid.netfid; |
5601 | if (set_allocation) { | |
1da177e4 LT |
5602 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5603 | pSMB->InformationLevel = | |
5604 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5605 | else | |
5606 | pSMB->InformationLevel = | |
5607 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5608 | } else /* Set File Size */ { |
1da177e4 LT |
5609 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5610 | pSMB->InformationLevel = | |
50c2f753 | 5611 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5612 | else |
5613 | pSMB->InformationLevel = | |
50c2f753 | 5614 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5615 | } |
5616 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5617 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5618 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5619 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5620 | if (rc) { |
f96637be JP |
5621 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5622 | rc); | |
1da177e4 LT |
5623 | } |
5624 | ||
50c2f753 | 5625 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5626 | since file handle passed in no longer valid */ |
5627 | ||
5628 | return rc; | |
5629 | } | |
5630 | ||
50c2f753 | 5631 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5632 | an open handle, rather than by pathname - this is awkward due to |
5633 | potential access conflicts on the open, but it is unavoidable for these | |
5634 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5635 | time and resort to the original setpathinfo level which takes the ancient | |
5636 | DOS time format with 2 second granularity */ | |
5637 | int | |
6d5786a3 | 5638 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5639 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5640 | { |
5641 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5642 | char *data_offset; |
5643 | int rc = 0; | |
1da177e4 LT |
5644 | __u16 params, param_offset, offset, byte_count, count; |
5645 | ||
f96637be | 5646 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5647 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5648 | ||
1da177e4 LT |
5649 | if (rc) |
5650 | return rc; | |
5651 | ||
2dd2dfa0 JL |
5652 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5653 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5654 | |
1da177e4 LT |
5655 | params = 6; |
5656 | pSMB->MaxSetupCount = 0; | |
5657 | pSMB->Reserved = 0; | |
5658 | pSMB->Flags = 0; | |
5659 | pSMB->Timeout = 0; | |
5660 | pSMB->Reserved2 = 0; | |
5661 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5662 | offset = param_offset + params; | |
5663 | ||
b2a3ad9c JL |
5664 | data_offset = (char *)pSMB + |
5665 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5666 | |
26f57364 | 5667 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5668 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5669 | /* BB find max SMB PDU from sess */ |
5670 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5671 | pSMB->SetupCount = 1; |
5672 | pSMB->Reserved3 = 0; | |
5673 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5674 | byte_count = 3 /* pad */ + params + count; | |
5675 | pSMB->DataCount = cpu_to_le16(count); | |
5676 | pSMB->ParameterCount = cpu_to_le16(params); | |
5677 | pSMB->TotalDataCount = pSMB->DataCount; | |
5678 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5679 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5680 | pSMB->DataOffset = cpu_to_le16(offset); | |
5681 | pSMB->Fid = fid; | |
5682 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5683 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5684 | else | |
5685 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5686 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5687 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5688 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5689 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5690 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5691 | if (rc) |
f96637be JP |
5692 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5693 | rc); | |
1da177e4 | 5694 | |
50c2f753 | 5695 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5696 | since file handle passed in no longer valid */ |
5697 | ||
5698 | return rc; | |
5699 | } | |
5700 | ||
6d22f098 | 5701 | int |
6d5786a3 | 5702 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5703 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5704 | { | |
5705 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5706 | char *data_offset; | |
5707 | int rc = 0; | |
5708 | __u16 params, param_offset, offset, byte_count, count; | |
5709 | ||
f96637be | 5710 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5711 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5712 | ||
5713 | if (rc) | |
5714 | return rc; | |
5715 | ||
5716 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5717 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5718 | ||
5719 | params = 6; | |
5720 | pSMB->MaxSetupCount = 0; | |
5721 | pSMB->Reserved = 0; | |
5722 | pSMB->Flags = 0; | |
5723 | pSMB->Timeout = 0; | |
5724 | pSMB->Reserved2 = 0; | |
5725 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5726 | offset = param_offset + params; | |
5727 | ||
5728 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5729 | ||
5730 | count = 1; | |
5731 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5732 | /* BB find max SMB PDU from sess */ | |
5733 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5734 | pSMB->SetupCount = 1; | |
5735 | pSMB->Reserved3 = 0; | |
5736 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5737 | byte_count = 3 /* pad */ + params + count; | |
5738 | pSMB->DataCount = cpu_to_le16(count); | |
5739 | pSMB->ParameterCount = cpu_to_le16(params); | |
5740 | pSMB->TotalDataCount = pSMB->DataCount; | |
5741 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5742 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5743 | pSMB->DataOffset = cpu_to_le16(offset); | |
5744 | pSMB->Fid = fid; | |
5745 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5746 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5747 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5748 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5749 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5750 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5751 | if (rc) |
f96637be | 5752 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5753 | |
5754 | return rc; | |
5755 | } | |
1da177e4 LT |
5756 | |
5757 | int | |
6d5786a3 | 5758 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5759 | const char *fileName, const FILE_BASIC_INFO *data, |
5760 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5761 | { |
5762 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5763 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5764 | int name_len; | |
5765 | int rc = 0; | |
5766 | int bytes_returned = 0; | |
5767 | char *data_offset; | |
5768 | __u16 params, param_offset, offset, byte_count, count; | |
5769 | ||
f96637be | 5770 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5771 | |
5772 | SetTimesRetry: | |
5773 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5774 | (void **) &pSMBr); | |
5775 | if (rc) | |
5776 | return rc; | |
5777 | ||
5778 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5779 | name_len = | |
acbbb76a SF |
5780 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5781 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5782 | name_len++; /* trailing null */ |
5783 | name_len *= 2; | |
50c2f753 | 5784 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5785 | name_len = strnlen(fileName, PATH_MAX); |
5786 | name_len++; /* trailing null */ | |
5787 | strncpy(pSMB->FileName, fileName, name_len); | |
5788 | } | |
5789 | ||
5790 | params = 6 + name_len; | |
26f57364 | 5791 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5792 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5793 | /* BB find max SMB PDU from sess structure BB */ |
5794 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5795 | pSMB->MaxSetupCount = 0; |
5796 | pSMB->Reserved = 0; | |
5797 | pSMB->Flags = 0; | |
5798 | pSMB->Timeout = 0; | |
5799 | pSMB->Reserved2 = 0; | |
5800 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5801 | InformationLevel) - 4; |
1da177e4 LT |
5802 | offset = param_offset + params; |
5803 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5804 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5805 | pSMB->DataOffset = cpu_to_le16(offset); | |
5806 | pSMB->SetupCount = 1; | |
5807 | pSMB->Reserved3 = 0; | |
5808 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5809 | byte_count = 3 /* pad */ + params + count; | |
5810 | ||
5811 | pSMB->DataCount = cpu_to_le16(count); | |
5812 | pSMB->ParameterCount = cpu_to_le16(params); | |
5813 | pSMB->TotalDataCount = pSMB->DataCount; | |
5814 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5815 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5816 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5817 | else | |
5818 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5819 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5820 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5821 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5822 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5823 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5824 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5825 | if (rc) |
f96637be | 5826 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5827 | |
5828 | cifs_buf_release(pSMB); | |
5829 | ||
5830 | if (rc == -EAGAIN) | |
5831 | goto SetTimesRetry; | |
5832 | ||
5833 | return rc; | |
5834 | } | |
5835 | ||
5836 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5837 | /* Can be used to set attributes */ | |
5838 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5839 | handling it anyway and NT4 was what we thought it would be needed for | |
5840 | Do not delete it until we prove whether needed for Win9x though */ | |
5841 | int | |
6d5786a3 | 5842 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5843 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5844 | { | |
5845 | SETATTR_REQ *pSMB = NULL; | |
5846 | SETATTR_RSP *pSMBr = NULL; | |
5847 | int rc = 0; | |
5848 | int bytes_returned; | |
5849 | int name_len; | |
5850 | ||
f96637be | 5851 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5852 | |
5853 | SetAttrLgcyRetry: | |
5854 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5855 | (void **) &pSMBr); | |
5856 | if (rc) | |
5857 | return rc; | |
5858 | ||
5859 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5860 | name_len = | |
acbbb76a SF |
5861 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5862 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5863 | name_len++; /* trailing null */ |
5864 | name_len *= 2; | |
50c2f753 | 5865 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5866 | name_len = strnlen(fileName, PATH_MAX); |
5867 | name_len++; /* trailing null */ | |
5868 | strncpy(pSMB->fileName, fileName, name_len); | |
5869 | } | |
5870 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5871 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5872 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5873 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5874 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5875 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5876 | if (rc) |
f96637be | 5877 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5878 | |
5879 | cifs_buf_release(pSMB); | |
5880 | ||
5881 | if (rc == -EAGAIN) | |
5882 | goto SetAttrLgcyRetry; | |
5883 | ||
5884 | return rc; | |
5885 | } | |
5886 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5887 | ||
654cf14a JL |
5888 | static void |
5889 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5890 | const struct cifs_unix_set_info_args *args) | |
5891 | { | |
49418b2c | 5892 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5893 | u64 mode = args->mode; |
5894 | ||
49418b2c EB |
5895 | if (uid_valid(args->uid)) |
5896 | uid = from_kuid(&init_user_ns, args->uid); | |
5897 | if (gid_valid(args->gid)) | |
5898 | gid = from_kgid(&init_user_ns, args->gid); | |
5899 | ||
654cf14a JL |
5900 | /* |
5901 | * Samba server ignores set of file size to zero due to bugs in some | |
5902 | * older clients, but we should be precise - we use SetFileSize to | |
5903 | * set file size and do not want to truncate file size to zero | |
25985edc | 5904 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5905 | * zero instead of -1 here |
5906 | */ | |
5907 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5908 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5909 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5910 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5911 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5912 | data_offset->Uid = cpu_to_le64(uid); |
5913 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5914 | /* better to leave device as zero when it is */ |
5915 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5916 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5917 | data_offset->Permissions = cpu_to_le64(mode); | |
5918 | ||
5919 | if (S_ISREG(mode)) | |
5920 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5921 | else if (S_ISDIR(mode)) | |
5922 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5923 | else if (S_ISLNK(mode)) | |
5924 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5925 | else if (S_ISCHR(mode)) | |
5926 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5927 | else if (S_ISBLK(mode)) | |
5928 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5929 | else if (S_ISFIFO(mode)) | |
5930 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5931 | else if (S_ISSOCK(mode)) | |
5932 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5933 | } | |
5934 | ||
3bbeeb3c | 5935 | int |
6d5786a3 | 5936 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5937 | const struct cifs_unix_set_info_args *args, |
5938 | u16 fid, u32 pid_of_opener) | |
5939 | { | |
5940 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5941 | char *data_offset; |
3bbeeb3c JL |
5942 | int rc = 0; |
5943 | u16 params, param_offset, offset, byte_count, count; | |
5944 | ||
f96637be | 5945 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5946 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5947 | ||
5948 | if (rc) | |
5949 | return rc; | |
5950 | ||
5951 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5952 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5953 | ||
5954 | params = 6; | |
5955 | pSMB->MaxSetupCount = 0; | |
5956 | pSMB->Reserved = 0; | |
5957 | pSMB->Flags = 0; | |
5958 | pSMB->Timeout = 0; | |
5959 | pSMB->Reserved2 = 0; | |
5960 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5961 | offset = param_offset + params; | |
5962 | ||
b2a3ad9c JL |
5963 | data_offset = (char *)pSMB + |
5964 | offsetof(struct smb_hdr, Protocol) + offset; | |
5965 | ||
3bbeeb3c JL |
5966 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5967 | ||
5968 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5969 | /* BB find max SMB PDU from sess */ | |
5970 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5971 | pSMB->SetupCount = 1; | |
5972 | pSMB->Reserved3 = 0; | |
5973 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5974 | byte_count = 3 /* pad */ + params + count; | |
5975 | pSMB->DataCount = cpu_to_le16(count); | |
5976 | pSMB->ParameterCount = cpu_to_le16(params); | |
5977 | pSMB->TotalDataCount = pSMB->DataCount; | |
5978 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5979 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5980 | pSMB->DataOffset = cpu_to_le16(offset); | |
5981 | pSMB->Fid = fid; | |
5982 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5983 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5984 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5985 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5986 | ||
b2a3ad9c | 5987 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5988 | |
792af7b0 | 5989 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5990 | if (rc) |
f96637be JP |
5991 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5992 | rc); | |
3bbeeb3c JL |
5993 | |
5994 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5995 | since file handle passed in no longer valid */ | |
5996 | ||
5997 | return rc; | |
5998 | } | |
5999 | ||
1da177e4 | 6000 | int |
6d5786a3 | 6001 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6002 | const char *file_name, |
01ea95e3 JL |
6003 | const struct cifs_unix_set_info_args *args, |
6004 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6005 | { |
6006 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6007 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6008 | int name_len; | |
6009 | int rc = 0; | |
6010 | int bytes_returned = 0; | |
6011 | FILE_UNIX_BASIC_INFO *data_offset; | |
6012 | __u16 params, param_offset, offset, count, byte_count; | |
6013 | ||
f96637be | 6014 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6015 | setPermsRetry: |
6016 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6017 | (void **) &pSMBr); | |
6018 | if (rc) | |
6019 | return rc; | |
6020 | ||
6021 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6022 | name_len = | |
ff691e96 | 6023 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6024 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6025 | name_len++; /* trailing null */ |
6026 | name_len *= 2; | |
3e87d803 | 6027 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6028 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6029 | name_len++; /* trailing null */ |
ff691e96 | 6030 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6031 | } |
6032 | ||
6033 | params = 6 + name_len; | |
26f57364 | 6034 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6035 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6036 | /* BB find max SMB PDU from sess structure BB */ |
6037 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6038 | pSMB->MaxSetupCount = 0; |
6039 | pSMB->Reserved = 0; | |
6040 | pSMB->Flags = 0; | |
6041 | pSMB->Timeout = 0; | |
6042 | pSMB->Reserved2 = 0; | |
6043 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6044 | InformationLevel) - 4; |
1da177e4 LT |
6045 | offset = param_offset + params; |
6046 | data_offset = | |
6047 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6048 | offset); | |
6049 | memset(data_offset, 0, count); | |
6050 | pSMB->DataOffset = cpu_to_le16(offset); | |
6051 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6052 | pSMB->SetupCount = 1; | |
6053 | pSMB->Reserved3 = 0; | |
6054 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6055 | byte_count = 3 /* pad */ + params + count; | |
6056 | pSMB->ParameterCount = cpu_to_le16(params); | |
6057 | pSMB->DataCount = cpu_to_le16(count); | |
6058 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6059 | pSMB->TotalDataCount = pSMB->DataCount; | |
6060 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6061 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6062 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6063 | |
654cf14a | 6064 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6065 | |
6066 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6067 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6068 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6069 | if (rc) |
f96637be | 6070 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6071 | |
0d817bc0 | 6072 | cifs_buf_release(pSMB); |
1da177e4 LT |
6073 | if (rc == -EAGAIN) |
6074 | goto setPermsRetry; | |
6075 | return rc; | |
6076 | } | |
6077 | ||
1da177e4 | 6078 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6079 | /* |
6080 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6081 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6082 | * it looks for that attribute name and stuffs that value into the EAData | |
6083 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6084 | * buffer. In both cases, the return value is either the length of the | |
6085 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6086 | * the data isn't copied to it, but the length is returned. | |
6087 | */ | |
1da177e4 | 6088 | ssize_t |
6d5786a3 | 6089 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6090 | const unsigned char *searchName, const unsigned char *ea_name, |
6091 | char *EAData, size_t buf_size, | |
6092 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6093 | { |
6094 | /* BB assumes one setup word */ | |
6095 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6096 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6097 | int rc = 0; | |
6098 | int bytes_returned; | |
6e462b9f | 6099 | int list_len; |
f0d3868b | 6100 | struct fealist *ea_response_data; |
50c2f753 SF |
6101 | struct fea *temp_fea; |
6102 | char *temp_ptr; | |
0cd126b5 | 6103 | char *end_of_smb; |
f0d3868b | 6104 | __u16 params, byte_count, data_offset; |
5980fc96 | 6105 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6106 | |
f96637be | 6107 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6108 | QAllEAsRetry: |
6109 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6110 | (void **) &pSMBr); | |
6111 | if (rc) | |
6112 | return rc; | |
6113 | ||
6114 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6115 | list_len = |
acbbb76a SF |
6116 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6117 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6118 | list_len++; /* trailing null */ |
6119 | list_len *= 2; | |
1da177e4 | 6120 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6121 | list_len = strnlen(searchName, PATH_MAX); |
6122 | list_len++; /* trailing null */ | |
6123 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6124 | } |
6125 | ||
6e462b9f | 6126 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6127 | pSMB->TotalDataCount = 0; |
6128 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6129 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6130 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6131 | pSMB->MaxSetupCount = 0; |
6132 | pSMB->Reserved = 0; | |
6133 | pSMB->Flags = 0; | |
6134 | pSMB->Timeout = 0; | |
6135 | pSMB->Reserved2 = 0; | |
6136 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6137 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6138 | pSMB->DataCount = 0; |
6139 | pSMB->DataOffset = 0; | |
6140 | pSMB->SetupCount = 1; | |
6141 | pSMB->Reserved3 = 0; | |
6142 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6143 | byte_count = params + 1 /* pad */ ; | |
6144 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6145 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6146 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6147 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6148 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6149 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6150 | ||
6151 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6152 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6153 | if (rc) { | |
f96637be | 6154 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6155 | goto QAllEAsOut; |
6156 | } | |
1da177e4 | 6157 | |
f0d3868b JL |
6158 | |
6159 | /* BB also check enough total bytes returned */ | |
6160 | /* BB we need to improve the validity checking | |
6161 | of these trans2 responses */ | |
6162 | ||
6163 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6164 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6165 | rc = -EIO; /* bad smb */ |
6166 | goto QAllEAsOut; | |
6167 | } | |
6168 | ||
6169 | /* check that length of list is not more than bcc */ | |
6170 | /* check that each entry does not go beyond length | |
6171 | of list */ | |
6172 | /* check that each element of each entry does not | |
6173 | go beyond end of list */ | |
6174 | /* validate_trans2_offsets() */ | |
6175 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6176 | ||
6177 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6178 | ea_response_data = (struct fealist *) | |
6179 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6180 | ||
6e462b9f | 6181 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6182 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6183 | if (list_len <= 8) { |
f96637be | 6184 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
f0d3868b JL |
6185 | goto QAllEAsOut; |
6186 | } | |
6187 | ||
0cd126b5 | 6188 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6189 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6190 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6191 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6192 | rc = -EIO; |
6193 | goto QAllEAsOut; | |
6194 | } | |
6195 | ||
f0d3868b | 6196 | /* account for ea list len */ |
6e462b9f | 6197 | list_len -= 4; |
f0d3868b JL |
6198 | temp_fea = ea_response_data->list; |
6199 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6200 | while (list_len > 0) { |
122ca007 | 6201 | unsigned int name_len; |
f0d3868b | 6202 | __u16 value_len; |
0cd126b5 | 6203 | |
6e462b9f | 6204 | list_len -= 4; |
f0d3868b | 6205 | temp_ptr += 4; |
0cd126b5 JL |
6206 | /* make sure we can read name_len and value_len */ |
6207 | if (list_len < 0) { | |
f96637be | 6208 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6209 | rc = -EIO; |
6210 | goto QAllEAsOut; | |
6211 | } | |
6212 | ||
6213 | name_len = temp_fea->name_len; | |
6214 | value_len = le16_to_cpu(temp_fea->value_len); | |
6215 | list_len -= name_len + 1 + value_len; | |
6216 | if (list_len < 0) { | |
f96637be | 6217 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6218 | rc = -EIO; |
6219 | goto QAllEAsOut; | |
6220 | } | |
6221 | ||
31c0519f | 6222 | if (ea_name) { |
91d065c4 | 6223 | if (ea_name_len == name_len && |
ac423446 | 6224 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6225 | temp_ptr += name_len + 1; |
6226 | rc = value_len; | |
6227 | if (buf_size == 0) | |
6228 | goto QAllEAsOut; | |
6229 | if ((size_t)value_len > buf_size) { | |
6230 | rc = -ERANGE; | |
6231 | goto QAllEAsOut; | |
6232 | } | |
6233 | memcpy(EAData, temp_ptr, value_len); | |
6234 | goto QAllEAsOut; | |
6235 | } | |
f0d3868b | 6236 | } else { |
31c0519f JL |
6237 | /* account for prefix user. and trailing null */ |
6238 | rc += (5 + 1 + name_len); | |
6239 | if (rc < (int) buf_size) { | |
6240 | memcpy(EAData, "user.", 5); | |
6241 | EAData += 5; | |
6242 | memcpy(EAData, temp_ptr, name_len); | |
6243 | EAData += name_len; | |
6244 | /* null terminate name */ | |
6245 | *EAData = 0; | |
6246 | ++EAData; | |
6247 | } else if (buf_size == 0) { | |
6248 | /* skip copy - calc size only */ | |
6249 | } else { | |
6250 | /* stop before overrun buffer */ | |
6251 | rc = -ERANGE; | |
6252 | break; | |
6253 | } | |
1da177e4 | 6254 | } |
0cd126b5 | 6255 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6256 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6257 | } |
f0d3868b | 6258 | |
31c0519f JL |
6259 | /* didn't find the named attribute */ |
6260 | if (ea_name) | |
6261 | rc = -ENODATA; | |
6262 | ||
f0d3868b | 6263 | QAllEAsOut: |
0d817bc0 | 6264 | cifs_buf_release(pSMB); |
1da177e4 LT |
6265 | if (rc == -EAGAIN) |
6266 | goto QAllEAsRetry; | |
6267 | ||
6268 | return (ssize_t)rc; | |
6269 | } | |
6270 | ||
1da177e4 | 6271 | int |
6d5786a3 PS |
6272 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6273 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6274 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6275 | int remap) | |
1da177e4 LT |
6276 | { |
6277 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6278 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6279 | struct fealist *parm_data; | |
6280 | int name_len; | |
6281 | int rc = 0; | |
6282 | int bytes_returned = 0; | |
6283 | __u16 params, param_offset, byte_count, offset, count; | |
6284 | ||
f96637be | 6285 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6286 | SetEARetry: |
6287 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6288 | (void **) &pSMBr); | |
6289 | if (rc) | |
6290 | return rc; | |
6291 | ||
6292 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6293 | name_len = | |
acbbb76a SF |
6294 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6295 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6296 | name_len++; /* trailing null */ |
6297 | name_len *= 2; | |
50c2f753 | 6298 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6299 | name_len = strnlen(fileName, PATH_MAX); |
6300 | name_len++; /* trailing null */ | |
6301 | strncpy(pSMB->FileName, fileName, name_len); | |
6302 | } | |
6303 | ||
6304 | params = 6 + name_len; | |
6305 | ||
6306 | /* done calculating parms using name_len of file name, | |
6307 | now use name_len to calculate length of ea name | |
6308 | we are going to create in the inode xattrs */ | |
790fe579 | 6309 | if (ea_name == NULL) |
1da177e4 LT |
6310 | name_len = 0; |
6311 | else | |
50c2f753 | 6312 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6313 | |
dae5dbdb | 6314 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6315 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6316 | /* BB find max SMB PDU from sess */ |
6317 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6318 | pSMB->MaxSetupCount = 0; |
6319 | pSMB->Reserved = 0; | |
6320 | pSMB->Flags = 0; | |
6321 | pSMB->Timeout = 0; | |
6322 | pSMB->Reserved2 = 0; | |
6323 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6324 | InformationLevel) - 4; |
1da177e4 LT |
6325 | offset = param_offset + params; |
6326 | pSMB->InformationLevel = | |
6327 | cpu_to_le16(SMB_SET_FILE_EA); | |
6328 | ||
6329 | parm_data = | |
6330 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6331 | offset); | |
6332 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6333 | pSMB->DataOffset = cpu_to_le16(offset); | |
6334 | pSMB->SetupCount = 1; | |
6335 | pSMB->Reserved3 = 0; | |
6336 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6337 | byte_count = 3 /* pad */ + params + count; | |
6338 | pSMB->DataCount = cpu_to_le16(count); | |
6339 | parm_data->list_len = cpu_to_le32(count); | |
6340 | parm_data->list[0].EA_flags = 0; | |
6341 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6342 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6343 | /* EA names are always ASCII */ |
790fe579 | 6344 | if (ea_name) |
50c2f753 | 6345 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6346 | parm_data->list[0].name[name_len] = 0; |
6347 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6348 | /* caller ensures that ea_value_len is less than 64K but | |
6349 | we need to ensure that it fits within the smb */ | |
6350 | ||
50c2f753 SF |
6351 | /*BB add length check to see if it would fit in |
6352 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6353 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6354 | if (ea_value_len) | |
50c2f753 SF |
6355 | memcpy(parm_data->list[0].name+name_len+1, |
6356 | ea_value, ea_value_len); | |
1da177e4 LT |
6357 | |
6358 | pSMB->TotalDataCount = pSMB->DataCount; | |
6359 | pSMB->ParameterCount = cpu_to_le16(params); | |
6360 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6361 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6362 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6363 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6364 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6365 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6366 | if (rc) |
f96637be | 6367 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6368 | |
6369 | cifs_buf_release(pSMB); | |
6370 | ||
6371 | if (rc == -EAGAIN) | |
6372 | goto SetEARetry; | |
6373 | ||
6374 | return rc; | |
6375 | } | |
1da177e4 | 6376 | #endif |
0eff0e26 SF |
6377 | |
6378 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6379 | /* | |
6380 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6381 | * to allow network clients (such as Windows) to display updated | |
6382 | * lists of files in directory listings automatically when | |
6383 | * files are added by one user when another user has the | |
6384 | * same directory open on their desktop. The Linux cifs kernel | |
6385 | * client hooked into the kernel side of this interface for | |
6386 | * the same reason, but ironically when the VFS moved from | |
6387 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6388 | * network file system clients (the most obvious use case | |
6389 | * for notify interfaces is when multiple users can update | |
6390 | * the contents of the same directory - exactly what network | |
6391 | * file systems can do) although the server (Samba) could | |
6392 | * still use it. For the short term we leave the worker | |
6393 | * function ifdeffed out (below) until inotify is fixed | |
6394 | * in the VFS to make it easier to plug in network file | |
6395 | * system clients. If inotify turns out to be permanently | |
6396 | * incompatible for network fs clients, we could instead simply | |
6397 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6398 | */ | |
6d5786a3 | 6399 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6400 | const int notify_subdirs, const __u16 netfid, |
6401 | __u32 filter, struct file *pfile, int multishot, | |
6402 | const struct nls_table *nls_codepage) | |
6403 | { | |
6404 | int rc = 0; | |
6405 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6406 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6407 | struct dir_notify_req *dnotify_req; | |
6408 | int bytes_returned; | |
6409 | ||
f96637be | 6410 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6411 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6412 | (void **) &pSMBr); | |
6413 | if (rc) | |
6414 | return rc; | |
6415 | ||
6416 | pSMB->TotalParameterCount = 0 ; | |
6417 | pSMB->TotalDataCount = 0; | |
6418 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6419 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6420 | pSMB->MaxSetupCount = 4; |
6421 | pSMB->Reserved = 0; | |
6422 | pSMB->ParameterOffset = 0; | |
6423 | pSMB->DataCount = 0; | |
6424 | pSMB->DataOffset = 0; | |
6425 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6426 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6427 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6428 | if (notify_subdirs) | |
6429 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6430 | pSMB->Reserved2 = 0; | |
6431 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6432 | pSMB->Fid = netfid; /* file handle always le */ | |
6433 | pSMB->ByteCount = 0; | |
6434 | ||
6435 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6436 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6437 | CIFS_ASYNC_OP); | |
6438 | if (rc) { | |
f96637be | 6439 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6440 | } else { |
6441 | /* Add file to outstanding requests */ | |
6442 | /* BB change to kmem cache alloc */ | |
6443 | dnotify_req = kmalloc( | |
6444 | sizeof(struct dir_notify_req), | |
6445 | GFP_KERNEL); | |
6446 | if (dnotify_req) { | |
6447 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6448 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6449 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6450 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6451 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6452 | dnotify_req->netfid = netfid; | |
6453 | dnotify_req->pfile = pfile; | |
6454 | dnotify_req->filter = filter; | |
6455 | dnotify_req->multishot = multishot; | |
6456 | spin_lock(&GlobalMid_Lock); | |
6457 | list_add_tail(&dnotify_req->lhead, | |
6458 | &GlobalDnotifyReqList); | |
6459 | spin_unlock(&GlobalMid_Lock); | |
6460 | } else | |
6461 | rc = -ENOMEM; | |
6462 | } | |
6463 | cifs_buf_release(pSMB); | |
6464 | return rc; | |
6465 | } | |
6466 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |