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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
aa24d1e9 PS |
89 | /* |
90 | * Mark as invalid, all open files on tree connections since they | |
91 | * were closed when session to server was lost. | |
92 | */ | |
93 | void | |
94 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 | 99 | |
aa24d1e9 | 100 | /* list all files open on tree connection and mark them invalid */ |
4477288a | 101 | spin_lock(&cifs_file_list_lock); |
aa24d1e9 | 102 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 103 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 104 | open_file->invalidHandle = true; |
3bc303c2 | 105 | open_file->oplock_break_cancelled = true; |
1da177e4 | 106 | } |
4477288a | 107 | spin_unlock(&cifs_file_list_lock); |
aa24d1e9 PS |
108 | /* |
109 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
110 | * to this tcon. | |
111 | */ | |
1da177e4 LT |
112 | } |
113 | ||
9162ab20 JL |
114 | /* reconnect the socket, tcon, and smb session if needed */ |
115 | static int | |
96daf2b0 | 116 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 117 | { |
c4a5534a | 118 | int rc; |
96daf2b0 | 119 | struct cifs_ses *ses; |
9162ab20 JL |
120 | struct TCP_Server_Info *server; |
121 | struct nls_table *nls_codepage; | |
122 | ||
123 | /* | |
124 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
125 | * tcp and smb session status done differently for those three - in the | |
126 | * calling routine | |
127 | */ | |
128 | if (!tcon) | |
129 | return 0; | |
130 | ||
131 | ses = tcon->ses; | |
132 | server = ses->server; | |
133 | ||
134 | /* | |
135 | * only tree disconnect, open, and write, (and ulogoff which does not | |
136 | * have tcon) are allowed as we start force umount | |
137 | */ | |
138 | if (tcon->tidStatus == CifsExiting) { | |
139 | if (smb_command != SMB_COM_WRITE_ANDX && | |
140 | smb_command != SMB_COM_OPEN_ANDX && | |
141 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
142 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
143 | smb_command); | |
9162ab20 JL |
144 | return -ENODEV; |
145 | } | |
146 | } | |
147 | ||
9162ab20 JL |
148 | /* |
149 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
150 | * greater than cifs socket timeout which is 7 seconds | |
151 | */ | |
152 | while (server->tcpStatus == CifsNeedReconnect) { | |
153 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 154 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 155 | |
fd88ce93 | 156 | /* are we still trying to reconnect? */ |
9162ab20 JL |
157 | if (server->tcpStatus != CifsNeedReconnect) |
158 | break; | |
159 | ||
160 | /* | |
161 | * on "soft" mounts we wait once. Hard mounts keep | |
162 | * retrying until process is killed or server comes | |
163 | * back on-line | |
164 | */ | |
d402539b | 165 | if (!tcon->retry) { |
f96637be | 166 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
167 | return -EHOSTDOWN; |
168 | } | |
169 | } | |
170 | ||
171 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
172 | return 0; | |
173 | ||
174 | nls_codepage = load_nls_default(); | |
175 | ||
176 | /* | |
177 | * need to prevent multiple threads trying to simultaneously | |
178 | * reconnect the same SMB session | |
179 | */ | |
d7b619cf | 180 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
181 | rc = cifs_negotiate_protocol(0, ses); |
182 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
183 | rc = cifs_setup_session(0, ses, nls_codepage); |
184 | ||
185 | /* do we need to reconnect tcon? */ | |
186 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
188 | goto out; |
189 | } | |
190 | ||
aa24d1e9 | 191 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 192 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 193 | mutex_unlock(&ses->session_mutex); |
f96637be | 194 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 JL |
195 | |
196 | if (rc) | |
197 | goto out; | |
198 | ||
199 | /* | |
200 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
201 | * size shrinking | |
202 | */ | |
203 | atomic_inc(&tconInfoReconnectCount); | |
204 | ||
205 | /* tell server Unix caps we support */ | |
206 | if (ses->capabilities & CAP_UNIX) | |
207 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
208 | ||
209 | /* | |
210 | * Removed call to reopen open files here. It is safer (and faster) to | |
211 | * reopen files one at a time as needed in read and write. | |
212 | * | |
213 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
214 | */ | |
215 | ||
216 | out: | |
217 | /* | |
218 | * Check if handle based operation so we know whether we can continue | |
219 | * or not without returning to caller to reset file handle | |
220 | */ | |
221 | switch (smb_command) { | |
222 | case SMB_COM_READ_ANDX: | |
223 | case SMB_COM_WRITE_ANDX: | |
224 | case SMB_COM_CLOSE: | |
225 | case SMB_COM_FIND_CLOSE2: | |
226 | case SMB_COM_LOCKING_ANDX: | |
227 | rc = -EAGAIN; | |
228 | } | |
229 | ||
230 | unload_nls(nls_codepage); | |
231 | return rc; | |
232 | } | |
233 | ||
ad7a2926 SF |
234 | /* Allocate and return pointer to an SMB request buffer, and set basic |
235 | SMB information in the SMB header. If the return code is zero, this | |
236 | function must have filled in request_buf pointer */ | |
1da177e4 | 237 | static int |
96daf2b0 | 238 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 239 | void **request_buf) |
1da177e4 | 240 | { |
f569599a | 241 | int rc; |
1da177e4 | 242 | |
9162ab20 | 243 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 244 | if (rc) |
1da177e4 LT |
245 | return rc; |
246 | ||
247 | *request_buf = cifs_small_buf_get(); | |
248 | if (*request_buf == NULL) { | |
249 | /* BB should we add a retry in here if not a writepage? */ | |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
63135e08 | 253 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 254 | tcon, wct); |
1da177e4 | 255 | |
790fe579 SF |
256 | if (tcon != NULL) |
257 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 258 | |
f569599a | 259 | return 0; |
5815449d SF |
260 | } |
261 | ||
12b3b8ff | 262 | int |
50c2f753 | 263 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 264 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
265 | { |
266 | int rc; | |
50c2f753 | 267 | struct smb_hdr *buffer; |
12b3b8ff | 268 | |
5815449d | 269 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 270 | if (rc) |
12b3b8ff SF |
271 | return rc; |
272 | ||
04fdabe1 | 273 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 274 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
275 | if (ses->capabilities & CAP_UNICODE) |
276 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 277 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
278 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
279 | ||
280 | /* uid, tid can stay at zero as set in header assemble */ | |
281 | ||
50c2f753 | 282 | /* BB add support for turning on the signing when |
12b3b8ff SF |
283 | this function is used after 1st of session setup requests */ |
284 | ||
285 | return rc; | |
286 | } | |
1da177e4 LT |
287 | |
288 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
289 | static int | |
96daf2b0 | 290 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 291 | void **request_buf, void **response_buf) |
1da177e4 | 292 | { |
1da177e4 LT |
293 | *request_buf = cifs_buf_get(); |
294 | if (*request_buf == NULL) { | |
295 | /* BB should we add a retry in here if not a writepage? */ | |
296 | return -ENOMEM; | |
297 | } | |
298 | /* Although the original thought was we needed the response buf for */ | |
299 | /* potential retries of smb operations it turns out we can determine */ | |
300 | /* from the mid flags when the request buffer can be resent without */ | |
301 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 302 | if (response_buf) |
50c2f753 | 303 | *response_buf = *request_buf; |
1da177e4 LT |
304 | |
305 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 306 | wct); |
1da177e4 | 307 | |
790fe579 SF |
308 | if (tcon != NULL) |
309 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 310 | |
f569599a JL |
311 | return 0; |
312 | } | |
313 | ||
314 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
315 | static int | |
96daf2b0 | 316 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
317 | void **request_buf, void **response_buf) |
318 | { | |
319 | int rc; | |
320 | ||
321 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
322 | if (rc) | |
323 | return rc; | |
324 | ||
325 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
326 | } | |
327 | ||
328 | static int | |
96daf2b0 | 329 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
330 | void **request_buf, void **response_buf) |
331 | { | |
332 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
333 | return -EHOSTDOWN; | |
334 | ||
335 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
336 | } |
337 | ||
50c2f753 | 338 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 339 | { |
12df83c9 JL |
340 | unsigned int total_size; |
341 | ||
342 | /* check for plausible wct */ | |
343 | if (pSMB->hdr.WordCount < 10) | |
344 | goto vt2_err; | |
1da177e4 | 345 | |
1da177e4 | 346 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
347 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
348 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
349 | goto vt2_err; | |
350 | ||
12df83c9 JL |
351 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
352 | if (total_size >= 512) | |
353 | goto vt2_err; | |
354 | ||
fd5707e1 JL |
355 | /* check that bcc is at least as big as parms + data, and that it is |
356 | * less than negotiated smb buffer | |
357 | */ | |
12df83c9 JL |
358 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
359 | if (total_size > get_bcc(&pSMB->hdr) || | |
360 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
361 | goto vt2_err; | |
362 | ||
363 | return 0; | |
364 | vt2_err: | |
50c2f753 | 365 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 366 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 367 | return -EINVAL; |
1da177e4 | 368 | } |
690c522f | 369 | |
31d9e2bd | 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); | |
466 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); | |
467 | /* even though we do not use raw we might as well set this | |
468 | accurately, in case we ever find a need for it */ | |
469 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
470 | server->max_rw = 0xFF00; | |
471 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
472 | } else { | |
473 | server->max_rw = 0;/* do not need to use raw anyway */ | |
474 | server->capabilities = CAP_MPX_MODE; | |
475 | } | |
476 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
477 | if (tmp == -1) { | |
478 | /* OS/2 often does not set timezone therefore | |
479 | * we must use server time to calc time zone. | |
480 | * Could deviate slightly from the right zone. | |
481 | * Smallest defined timezone difference is 15 minutes | |
482 | * (i.e. Nepal). Rounding up/down is done to match | |
483 | * this requirement. | |
484 | */ | |
485 | int val, seconds, remain, result; | |
486 | struct timespec ts, utc; | |
487 | utc = CURRENT_TIME; | |
488 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, | |
489 | rsp->SrvTime.Time, 0); | |
490 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
491 | (int)ts.tv_sec, (int)utc.tv_sec, | |
492 | (int)(utc.tv_sec - ts.tv_sec)); | |
493 | val = (int)(utc.tv_sec - ts.tv_sec); | |
494 | seconds = abs(val); | |
495 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
496 | remain = seconds % MIN_TZ_ADJ; | |
497 | if (remain >= (MIN_TZ_ADJ / 2)) | |
498 | result += MIN_TZ_ADJ; | |
499 | if (val < 0) | |
500 | result = -result; | |
501 | server->timeAdj = result; | |
502 | } else { | |
503 | server->timeAdj = (int)tmp; | |
504 | server->timeAdj *= 60; /* also in seconds */ | |
505 | } | |
506 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
507 | ||
508 | ||
509 | /* BB get server time for time conversions and add | |
510 | code to use it and timezone since this is not UTC */ | |
511 | ||
512 | if (rsp->EncryptionKeyLength == | |
513 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
514 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
515 | CIFS_CRYPTO_KEY_SIZE); | |
516 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
517 | return -EIO; /* need cryptkey unless plain text */ | |
518 | } | |
519 | ||
520 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
521 | return 0; | |
522 | } | |
523 | #else | |
524 | static inline int | |
3f618223 | 525 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
526 | { |
527 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
528 | return -EOPNOTSUPP; | |
529 | } | |
530 | #endif | |
531 | ||
9193400b | 532 | static bool |
3f618223 | 533 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 534 | { |
3f618223 JL |
535 | switch (sectype) { |
536 | case RawNTLMSSP: | |
537 | case Kerberos: | |
9193400b | 538 | return true; |
3f618223 JL |
539 | case Unspecified: |
540 | if (global_secflags & | |
541 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
542 | return true; | |
543 | /* Fallthrough */ | |
544 | default: | |
545 | return false; | |
546 | } | |
9193400b JL |
547 | } |
548 | ||
1da177e4 | 549 | int |
286170aa | 550 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
551 | { |
552 | NEGOTIATE_REQ *pSMB; | |
553 | NEGOTIATE_RSP *pSMBr; | |
554 | int rc = 0; | |
555 | int bytes_returned; | |
3979877e | 556 | int i; |
3534b850 | 557 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
558 | u16 count; |
559 | ||
3534b850 JL |
560 | if (!server) { |
561 | WARN(1, "%s: server is NULL!\n", __func__); | |
562 | return -EIO; | |
1da177e4 | 563 | } |
3534b850 | 564 | |
1da177e4 LT |
565 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
566 | (void **) &pSMB, (void **) &pSMBr); | |
567 | if (rc) | |
568 | return rc; | |
750d1151 | 569 | |
88257360 | 570 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 571 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 572 | |
3f618223 | 573 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 574 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
575 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
576 | } | |
50c2f753 | 577 | |
3979877e | 578 | count = 0; |
50c2f753 | 579 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
580 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
581 | count += strlen(protocols[i].name) + 1; | |
582 | /* null at end of source and target buffers anyway */ | |
583 | } | |
be8e3b00 | 584 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
585 | pSMB->ByteCount = cpu_to_le16(count); |
586 | ||
587 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
588 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 589 | if (rc != 0) |
254e55ed SF |
590 | goto neg_err_exit; |
591 | ||
9bf67e51 | 592 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 593 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 594 | /* Check wct = 1 error case */ |
9bf67e51 | 595 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 596 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 597 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
598 | could not negotiate a common dialect */ |
599 | rc = -EOPNOTSUPP; | |
600 | goto neg_err_exit; | |
790fe579 | 601 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 602 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 603 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 604 | goto signing_check; |
790fe579 | 605 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
606 | /* unknown wct */ |
607 | rc = -EOPNOTSUPP; | |
608 | goto neg_err_exit; | |
609 | } | |
2190eca1 JL |
610 | /* else wct == 17, NTLM or better */ |
611 | ||
96daf2b0 SF |
612 | server->sec_mode = pSMBr->SecurityMode; |
613 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 614 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 615 | |
254e55ed SF |
616 | /* one byte, so no need to convert this or EncryptionKeyLen from |
617 | little endian */ | |
10b9b98e PS |
618 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
619 | cifs_max_pending); | |
45275789 | 620 | set_credits(server, server->maxReq); |
254e55ed | 621 | /* probably no need to store and check maxvcs */ |
c974befa | 622 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 623 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 624 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 625 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
626 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
627 | server->timeAdj *= 60; | |
31d9e2bd | 628 | |
e598d1d8 JL |
629 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
630 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 631 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 632 | CIFS_CRYPTO_KEY_SIZE); |
e598d1d8 | 633 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
07cc6cf9 | 634 | server->capabilities & CAP_EXTENDED_SECURITY) && |
e598d1d8 JL |
635 | (pSMBr->EncryptionKeyLength == 0)) { |
636 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; | |
3f618223 | 637 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 638 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 639 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
640 | } else { |
641 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 642 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 643 | } |
254e55ed SF |
644 | |
645 | signing_check: | |
9ddec561 | 646 | if (!rc) |
38d77c50 | 647 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 648 | neg_err_exit: |
4a6d87f1 | 649 | cifs_buf_release(pSMB); |
254e55ed | 650 | |
f96637be | 651 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
652 | return rc; |
653 | } | |
654 | ||
655 | int | |
2e6e02ab | 656 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
657 | { |
658 | struct smb_hdr *smb_buffer; | |
1da177e4 | 659 | int rc = 0; |
1da177e4 | 660 | |
f96637be | 661 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 662 | |
f1987b44 JL |
663 | /* BB: do we need to check this? These should never be NULL. */ |
664 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
665 | return -EIO; | |
1da177e4 | 666 | |
f1987b44 JL |
667 | /* |
668 | * No need to return error on this operation if tid invalidated and | |
669 | * closed on server already e.g. due to tcp session crashing. Also, | |
670 | * the tcon is no longer on the list, so no need to take lock before | |
671 | * checking this. | |
672 | */ | |
268875b9 | 673 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 674 | return 0; |
1da177e4 | 675 | |
50c2f753 | 676 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 677 | (void **)&smb_buffer); |
f1987b44 | 678 | if (rc) |
1da177e4 | 679 | return rc; |
133672ef | 680 | |
792af7b0 | 681 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 682 | if (rc) |
f96637be | 683 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 684 | |
50c2f753 | 685 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 686 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
687 | if (rc == -EAGAIN) |
688 | rc = 0; | |
689 | ||
690 | return rc; | |
691 | } | |
692 | ||
766fdbb5 JL |
693 | /* |
694 | * This is a no-op for now. We're not really interested in the reply, but | |
695 | * rather in the fact that the server sent one and that server->lstrp | |
696 | * gets updated. | |
697 | * | |
698 | * FIXME: maybe we should consider checking that the reply matches request? | |
699 | */ | |
700 | static void | |
701 | cifs_echo_callback(struct mid_q_entry *mid) | |
702 | { | |
703 | struct TCP_Server_Info *server = mid->callback_data; | |
704 | ||
705 | DeleteMidQEntry(mid); | |
a891f0f8 | 706 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
707 | } |
708 | ||
709 | int | |
710 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
711 | { | |
712 | ECHO_REQ *smb; | |
713 | int rc = 0; | |
fcc31cb6 | 714 | struct kvec iov; |
fec344e3 JL |
715 | struct smb_rqst rqst = { .rq_iov = &iov, |
716 | .rq_nvec = 1 }; | |
766fdbb5 | 717 | |
f96637be | 718 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
719 | |
720 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
721 | if (rc) | |
722 | return rc; | |
723 | ||
724 | /* set up echo request */ | |
5443d130 | 725 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
726 | smb->hdr.WordCount = 1; |
727 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 728 | put_bcc(1, &smb->hdr); |
766fdbb5 | 729 | smb->Data[0] = 'a'; |
be8e3b00 | 730 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
731 | iov.iov_base = smb; |
732 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 733 | |
fec344e3 | 734 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f8 | 735 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 736 | if (rc) |
f96637be | 737 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
738 | |
739 | cifs_small_buf_release(smb); | |
740 | ||
741 | return rc; | |
742 | } | |
743 | ||
1da177e4 | 744 | int |
58c45c58 | 745 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 746 | { |
1da177e4 LT |
747 | LOGOFF_ANDX_REQ *pSMB; |
748 | int rc = 0; | |
1da177e4 | 749 | |
f96637be | 750 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 751 | |
14fbf50d JL |
752 | /* |
753 | * BB: do we need to check validity of ses and server? They should | |
754 | * always be valid since we have an active reference. If not, that | |
755 | * should probably be a BUG() | |
756 | */ | |
757 | if (!ses || !ses->server) | |
3b795210 SF |
758 | return -EIO; |
759 | ||
d7b619cf | 760 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
761 | if (ses->need_reconnect) |
762 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
763 | already closed due to reconnect */ | |
1da177e4 LT |
764 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
765 | if (rc) { | |
d7b619cf | 766 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
767 | return rc; |
768 | } | |
769 | ||
88257360 | 770 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 771 | |
38d77c50 JL |
772 | if (ses->server->sign) |
773 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
774 | |
775 | pSMB->hdr.Uid = ses->Suid; | |
776 | ||
777 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 778 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 779 | session_already_dead: |
d7b619cf | 780 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
781 | |
782 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 783 | since server closed smb session, no sense reporting |
1da177e4 LT |
784 | error */ |
785 | if (rc == -EAGAIN) | |
786 | rc = 0; | |
787 | return rc; | |
788 | } | |
789 | ||
2d785a50 | 790 | int |
6d5786a3 PS |
791 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
792 | const char *fileName, __u16 type, | |
793 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
794 | { |
795 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
796 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
797 | struct unlink_psx_rq *pRqD; | |
798 | int name_len; | |
799 | int rc = 0; | |
800 | int bytes_returned = 0; | |
801 | __u16 params, param_offset, offset, byte_count; | |
802 | ||
f96637be | 803 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
804 | PsxDelete: |
805 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
806 | (void **) &pSMBr); | |
807 | if (rc) | |
808 | return rc; | |
809 | ||
810 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
811 | name_len = | |
acbbb76a SF |
812 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
813 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
814 | name_len++; /* trailing null */ |
815 | name_len *= 2; | |
816 | } else { /* BB add path length overrun check */ | |
817 | name_len = strnlen(fileName, PATH_MAX); | |
818 | name_len++; /* trailing null */ | |
819 | strncpy(pSMB->FileName, fileName, name_len); | |
820 | } | |
821 | ||
822 | params = 6 + name_len; | |
823 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
824 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
825 | pSMB->MaxSetupCount = 0; | |
826 | pSMB->Reserved = 0; | |
827 | pSMB->Flags = 0; | |
828 | pSMB->Timeout = 0; | |
829 | pSMB->Reserved2 = 0; | |
830 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
831 | InformationLevel) - 4; | |
832 | offset = param_offset + params; | |
833 | ||
834 | /* Setup pointer to Request Data (inode type) */ | |
835 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
836 | pRqD->type = cpu_to_le16(type); | |
837 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
838 | pSMB->DataOffset = cpu_to_le16(offset); | |
839 | pSMB->SetupCount = 1; | |
840 | pSMB->Reserved3 = 0; | |
841 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
842 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
843 | ||
844 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
845 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
846 | pSMB->ParameterCount = cpu_to_le16(params); | |
847 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
848 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
849 | pSMB->Reserved4 = 0; | |
be8e3b00 | 850 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
851 | pSMB->ByteCount = cpu_to_le16(byte_count); |
852 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
853 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 854 | if (rc) |
f96637be | 855 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
856 | cifs_buf_release(pSMB); |
857 | ||
44c58186 | 858 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
859 | |
860 | if (rc == -EAGAIN) | |
861 | goto PsxDelete; | |
862 | ||
863 | return rc; | |
864 | } | |
865 | ||
1da177e4 | 866 | int |
ed6875e0 PS |
867 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
868 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
869 | { |
870 | DELETE_FILE_REQ *pSMB = NULL; | |
871 | DELETE_FILE_RSP *pSMBr = NULL; | |
872 | int rc = 0; | |
873 | int bytes_returned; | |
874 | int name_len; | |
ed6875e0 | 875 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 LT |
876 | |
877 | DelFileRetry: | |
878 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
879 | (void **) &pSMBr); | |
880 | if (rc) | |
881 | return rc; | |
882 | ||
883 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
884 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
885 | PATH_MAX, cifs_sb->local_nls, | |
886 | remap); | |
1da177e4 LT |
887 | name_len++; /* trailing null */ |
888 | name_len *= 2; | |
09d1db5c | 889 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 890 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 891 | name_len++; /* trailing null */ |
ed6875e0 | 892 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
893 | } |
894 | pSMB->SearchAttributes = | |
895 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
896 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 897 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
898 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
899 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
900 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 901 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 902 | if (rc) |
f96637be | 903 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
904 | |
905 | cifs_buf_release(pSMB); | |
906 | if (rc == -EAGAIN) | |
907 | goto DelFileRetry; | |
908 | ||
909 | return rc; | |
910 | } | |
911 | ||
912 | int | |
f958ca5d PS |
913 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
914 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
915 | { |
916 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
917 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
918 | int rc = 0; | |
919 | int bytes_returned; | |
920 | int name_len; | |
f958ca5d | 921 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 922 | |
f96637be | 923 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
924 | RmDirRetry: |
925 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
926 | (void **) &pSMBr); | |
927 | if (rc) | |
928 | return rc; | |
929 | ||
930 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
931 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
932 | PATH_MAX, cifs_sb->local_nls, | |
933 | remap); | |
1da177e4 LT |
934 | name_len++; /* trailing null */ |
935 | name_len *= 2; | |
09d1db5c | 936 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 937 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 938 | name_len++; /* trailing null */ |
f958ca5d | 939 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
940 | } |
941 | ||
942 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 943 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
944 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
945 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
946 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 947 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 948 | if (rc) |
f96637be | 949 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
950 | |
951 | cifs_buf_release(pSMB); | |
952 | if (rc == -EAGAIN) | |
953 | goto RmDirRetry; | |
954 | return rc; | |
955 | } | |
956 | ||
957 | int | |
f436720e PS |
958 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
959 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
960 | { |
961 | int rc = 0; | |
962 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
963 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
964 | int bytes_returned; | |
965 | int name_len; | |
f436720e | 966 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 967 | |
f96637be | 968 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
969 | MkDirRetry: |
970 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
971 | (void **) &pSMBr); | |
972 | if (rc) | |
973 | return rc; | |
974 | ||
975 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 976 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
977 | PATH_MAX, cifs_sb->local_nls, |
978 | remap); | |
1da177e4 LT |
979 | name_len++; /* trailing null */ |
980 | name_len *= 2; | |
09d1db5c | 981 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
982 | name_len = strnlen(name, PATH_MAX); |
983 | name_len++; /* trailing null */ | |
984 | strncpy(pSMB->DirName, name, name_len); | |
985 | } | |
986 | ||
987 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 988 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
989 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
990 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
991 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 992 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 993 | if (rc) |
f96637be | 994 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 995 | |
1da177e4 LT |
996 | cifs_buf_release(pSMB); |
997 | if (rc == -EAGAIN) | |
998 | goto MkDirRetry; | |
999 | return rc; | |
1000 | } | |
1001 | ||
2dd29d31 | 1002 | int |
6d5786a3 PS |
1003 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1004 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1005 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1006 | const char *name, const struct nls_table *nls_codepage, | |
1007 | int remap) | |
2dd29d31 SF |
1008 | { |
1009 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1010 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1011 | int name_len; | |
1012 | int rc = 0; | |
1013 | int bytes_returned = 0; | |
2dd29d31 | 1014 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1015 | OPEN_PSX_REQ *pdata; |
1016 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1017 | |
f96637be | 1018 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1019 | PsxCreat: |
1020 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1021 | (void **) &pSMBr); | |
1022 | if (rc) | |
1023 | return rc; | |
1024 | ||
1025 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1026 | name_len = | |
acbbb76a SF |
1027 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1028 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1029 | name_len++; /* trailing null */ |
1030 | name_len *= 2; | |
1031 | } else { /* BB improve the check for buffer overruns BB */ | |
1032 | name_len = strnlen(name, PATH_MAX); | |
1033 | name_len++; /* trailing null */ | |
1034 | strncpy(pSMB->FileName, name, name_len); | |
1035 | } | |
1036 | ||
1037 | params = 6 + name_len; | |
1038 | count = sizeof(OPEN_PSX_REQ); | |
1039 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1040 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1041 | pSMB->MaxSetupCount = 0; | |
1042 | pSMB->Reserved = 0; | |
1043 | pSMB->Flags = 0; | |
1044 | pSMB->Timeout = 0; | |
1045 | pSMB->Reserved2 = 0; | |
1046 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1047 | InformationLevel) - 4; |
2dd29d31 | 1048 | offset = param_offset + params; |
2dd29d31 | 1049 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1050 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1051 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1052 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1053 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1054 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1055 | pSMB->DataOffset = cpu_to_le16(offset); | |
1056 | pSMB->SetupCount = 1; | |
1057 | pSMB->Reserved3 = 0; | |
1058 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1059 | byte_count = 3 /* pad */ + params + count; | |
1060 | ||
1061 | pSMB->DataCount = cpu_to_le16(count); | |
1062 | pSMB->ParameterCount = cpu_to_le16(params); | |
1063 | pSMB->TotalDataCount = pSMB->DataCount; | |
1064 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1065 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1066 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1067 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1068 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1069 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1070 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1071 | if (rc) { | |
f96637be | 1072 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1073 | goto psx_create_err; |
1074 | } | |
1075 | ||
f96637be | 1076 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1077 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1078 | ||
820a803f | 1079 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1080 | rc = -EIO; /* bad smb */ |
1081 | goto psx_create_err; | |
1082 | } | |
1083 | ||
1084 | /* copy return information to pRetData */ | |
50c2f753 | 1085 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1086 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1087 | |
2dd29d31 | 1088 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1089 | if (netfid) |
2dd29d31 SF |
1090 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1091 | /* Let caller know file was created so we can set the mode. */ | |
1092 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1093 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1094 | *pOplock |= CIFS_CREATE_ACTION; |
1095 | /* check to make sure response data is there */ | |
8f2376ad CG |
1096 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1097 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1098 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1099 | } else { |
820a803f | 1100 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1101 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1102 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1103 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1104 | goto psx_create_err; |
1105 | } | |
50c2f753 | 1106 | memcpy((char *) pRetData, |
cbac3cba | 1107 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1108 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1109 | } |
2dd29d31 SF |
1110 | |
1111 | psx_create_err: | |
1112 | cifs_buf_release(pSMB); | |
1113 | ||
65bc98b0 | 1114 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1115 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1116 | else |
44c58186 | 1117 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1118 | |
1119 | if (rc == -EAGAIN) | |
1120 | goto PsxCreat; | |
1121 | ||
50c2f753 | 1122 | return rc; |
2dd29d31 SF |
1123 | } |
1124 | ||
a9d02ad4 SF |
1125 | static __u16 convert_disposition(int disposition) |
1126 | { | |
1127 | __u16 ofun = 0; | |
1128 | ||
1129 | switch (disposition) { | |
1130 | case FILE_SUPERSEDE: | |
1131 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1132 | break; | |
1133 | case FILE_OPEN: | |
1134 | ofun = SMBOPEN_OAPPEND; | |
1135 | break; | |
1136 | case FILE_CREATE: | |
1137 | ofun = SMBOPEN_OCREATE; | |
1138 | break; | |
1139 | case FILE_OPEN_IF: | |
1140 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1141 | break; | |
1142 | case FILE_OVERWRITE: | |
1143 | ofun = SMBOPEN_OTRUNC; | |
1144 | break; | |
1145 | case FILE_OVERWRITE_IF: | |
1146 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1147 | break; | |
1148 | default: | |
f96637be | 1149 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1150 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1151 | } | |
1152 | return ofun; | |
1153 | } | |
1154 | ||
35fc37d5 JL |
1155 | static int |
1156 | access_flags_to_smbopen_mode(const int access_flags) | |
1157 | { | |
1158 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1159 | ||
1160 | if (masked_flags == GENERIC_READ) | |
1161 | return SMBOPEN_READ; | |
1162 | else if (masked_flags == GENERIC_WRITE) | |
1163 | return SMBOPEN_WRITE; | |
1164 | ||
1165 | /* just go for read/write */ | |
1166 | return SMBOPEN_READWRITE; | |
1167 | } | |
1168 | ||
a9d02ad4 | 1169 | int |
6d5786a3 | 1170 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1171 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1172 | const int access_flags, const int create_options, __u16 *netfid, |
1173 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1174 | const struct nls_table *nls_codepage, int remap) |
1175 | { | |
1176 | int rc = -EACCES; | |
1177 | OPENX_REQ *pSMB = NULL; | |
1178 | OPENX_RSP *pSMBr = NULL; | |
1179 | int bytes_returned; | |
1180 | int name_len; | |
1181 | __u16 count; | |
1182 | ||
1183 | OldOpenRetry: | |
1184 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1185 | (void **) &pSMBr); | |
1186 | if (rc) | |
1187 | return rc; | |
1188 | ||
1189 | pSMB->AndXCommand = 0xFF; /* none */ | |
1190 | ||
1191 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1192 | count = 1; /* account for one byte pad to word boundary */ | |
1193 | name_len = | |
acbbb76a SF |
1194 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1195 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1196 | name_len++; /* trailing null */ |
1197 | name_len *= 2; | |
1198 | } else { /* BB improve check for buffer overruns BB */ | |
1199 | count = 0; /* no pad */ | |
1200 | name_len = strnlen(fileName, PATH_MAX); | |
1201 | name_len++; /* trailing null */ | |
1202 | strncpy(pSMB->fileName, fileName, name_len); | |
1203 | } | |
1204 | if (*pOplock & REQ_OPLOCK) | |
1205 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1206 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1207 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1208 | |
a9d02ad4 | 1209 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1210 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1211 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1212 | /* set file as system file if special file such | |
1213 | as fifo and server expecting SFU style and | |
1214 | no Unix extensions */ | |
1215 | ||
790fe579 SF |
1216 | if (create_options & CREATE_OPTION_SPECIAL) |
1217 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1218 | else /* BB FIXME BB */ |
1219 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1220 | |
67750fb9 JL |
1221 | if (create_options & CREATE_OPTION_READONLY) |
1222 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1223 | |
1224 | /* BB FIXME BB */ | |
50c2f753 SF |
1225 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1226 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1227 | /* BB FIXME END BB */ |
3e87d803 SF |
1228 | |
1229 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1230 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1231 | count += name_len; |
be8e3b00 | 1232 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1233 | |
1234 | pSMB->ByteCount = cpu_to_le16(count); | |
1235 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1236 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1237 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1238 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1239 | if (rc) { |
f96637be | 1240 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1241 | } else { |
1242 | /* BB verify if wct == 15 */ | |
1243 | ||
582d21e5 | 1244 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1245 | |
1246 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1247 | /* Let caller know file was created so we can set the mode. */ | |
1248 | /* Do we care about the CreateAction in any other cases? */ | |
1249 | /* BB FIXME BB */ | |
790fe579 | 1250 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1251 | *pOplock |= CIFS_CREATE_ACTION; */ |
1252 | /* BB FIXME END */ | |
1253 | ||
790fe579 | 1254 | if (pfile_info) { |
a9d02ad4 SF |
1255 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1256 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1257 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1258 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1259 | pfile_info->Attributes = |
50c2f753 | 1260 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1261 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1262 | pfile_info->AllocationSize = |
1263 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1264 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1265 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1266 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1267 | } |
1268 | } | |
1269 | ||
1270 | cifs_buf_release(pSMB); | |
1271 | if (rc == -EAGAIN) | |
1272 | goto OldOpenRetry; | |
1273 | return rc; | |
1274 | } | |
1275 | ||
1da177e4 | 1276 | int |
6d5786a3 | 1277 | CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 1278 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1279 | const int access_flags, const int create_options, __u16 *netfid, |
1280 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1281 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1282 | { |
1283 | int rc = -EACCES; | |
1284 | OPEN_REQ *pSMB = NULL; | |
1285 | OPEN_RSP *pSMBr = NULL; | |
1286 | int bytes_returned; | |
1287 | int name_len; | |
1288 | __u16 count; | |
1289 | ||
1290 | openRetry: | |
1291 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1292 | (void **) &pSMBr); | |
1293 | if (rc) | |
1294 | return rc; | |
1295 | ||
1296 | pSMB->AndXCommand = 0xFF; /* none */ | |
1297 | ||
1298 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1299 | count = 1; /* account for one byte pad to word boundary */ | |
1300 | name_len = | |
acbbb76a SF |
1301 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1302 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1303 | name_len++; /* trailing null */ |
1304 | name_len *= 2; | |
1305 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1306 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1307 | count = 0; /* no pad */ |
1308 | name_len = strnlen(fileName, PATH_MAX); | |
1309 | name_len++; /* trailing null */ | |
1310 | pSMB->NameLength = cpu_to_le16(name_len); | |
1311 | strncpy(pSMB->fileName, fileName, name_len); | |
1312 | } | |
1313 | if (*pOplock & REQ_OPLOCK) | |
1314 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1315 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1316 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1317 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1318 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1319 | /* set file as system file if special file such |
1320 | as fifo and server expecting SFU style and | |
1321 | no Unix extensions */ | |
790fe579 | 1322 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1323 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1324 | else | |
1325 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1326 | |
1da177e4 LT |
1327 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1328 | /* but it helps speed up case sensitive checks for other | |
1329 | servers such as Samba */ | |
1330 | if (tcon->ses->capabilities & CAP_UNIX) | |
1331 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1332 | ||
67750fb9 JL |
1333 | if (create_options & CREATE_OPTION_READONLY) |
1334 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1335 | ||
1da177e4 LT |
1336 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1337 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1338 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1339 | /* BB Expirement with various impersonation levels and verify */ |
1340 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1341 | pSMB->SecurityFlags = |
1342 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1343 | ||
1344 | count += name_len; | |
be8e3b00 | 1345 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1346 | |
1347 | pSMB->ByteCount = cpu_to_le16(count); | |
1348 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1349 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1350 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1351 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1352 | if (rc) { |
f96637be | 1353 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
1da177e4 | 1354 | } else { |
09d1db5c | 1355 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1356 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1357 | /* Let caller know file was created so we can set the mode. */ | |
1358 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1359 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1360 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1361 | if (pfile_info) { |
61e74801 SF |
1362 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1363 | 36 /* CreationTime to Attributes */); | |
1364 | /* the file_info buf is endian converted by caller */ | |
1365 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1366 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1367 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1368 | pfile_info->DeletePending = 0; | |
1da177e4 | 1369 | } |
1da177e4 | 1370 | } |
a5a2b489 | 1371 | |
1da177e4 LT |
1372 | cifs_buf_release(pSMB); |
1373 | if (rc == -EAGAIN) | |
1374 | goto openRetry; | |
1375 | return rc; | |
1376 | } | |
1377 | ||
e28bc5b1 JL |
1378 | /* |
1379 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1380 | * current bigbuf. | |
1381 | */ | |
1382 | static int | |
1383 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1384 | { | |
5ffef7bf | 1385 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1386 | int remaining = rfclen + 4 - server->total_read; |
1387 | struct cifs_readdata *rdata = mid->callback_data; | |
1388 | ||
1389 | while (remaining > 0) { | |
1390 | int length; | |
1391 | ||
1392 | length = cifs_read_from_socket(server, server->bigbuf, | |
1393 | min_t(unsigned int, remaining, | |
1887f601 | 1394 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1395 | if (length < 0) |
1396 | return length; | |
1397 | server->total_read += length; | |
1398 | remaining -= length; | |
1399 | } | |
1400 | ||
1401 | dequeue_mid(mid, rdata->result); | |
1402 | return 0; | |
1403 | } | |
1404 | ||
09a4707e | 1405 | int |
e28bc5b1 JL |
1406 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1407 | { | |
1408 | int length, len; | |
8d5ce4d2 | 1409 | unsigned int data_offset, data_len; |
e28bc5b1 | 1410 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1411 | char *buf = server->smallbuf; |
1412 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1413 | |
f96637be JP |
1414 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1415 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1416 | |
1417 | /* | |
1418 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1419 | * can if there's not enough data. At this point, we've read down to | |
1420 | * the Mid. | |
1421 | */ | |
eb378711 | 1422 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1423 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1424 | |
5819575e JL |
1425 | rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1; |
1426 | rdata->iov.iov_len = len; | |
e28bc5b1 | 1427 | |
5819575e | 1428 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); |
e28bc5b1 JL |
1429 | if (length < 0) |
1430 | return length; | |
1431 | server->total_read += length; | |
1432 | ||
1433 | /* Was the SMB read successful? */ | |
eb378711 | 1434 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1435 | if (rdata->result != 0) { |
f96637be JP |
1436 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1437 | __func__, rdata->result); | |
e28bc5b1 JL |
1438 | return cifs_readv_discard(server, mid); |
1439 | } | |
1440 | ||
1441 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1442 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1443 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1444 | __func__, server->total_read, | |
1445 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1446 | rdata->result = -EIO; |
1447 | return cifs_readv_discard(server, mid); | |
1448 | } | |
1449 | ||
eb378711 | 1450 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1451 | if (data_offset < server->total_read) { |
1452 | /* | |
1453 | * win2k8 sometimes sends an offset of 0 when the read | |
1454 | * is beyond the EOF. Treat it as if the data starts just after | |
1455 | * the header. | |
1456 | */ | |
f96637be JP |
1457 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1458 | __func__, data_offset); | |
e28bc5b1 JL |
1459 | data_offset = server->total_read; |
1460 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1461 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1462 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1463 | __func__, data_offset); | |
e28bc5b1 JL |
1464 | rdata->result = -EIO; |
1465 | return cifs_readv_discard(server, mid); | |
1466 | } | |
1467 | ||
f96637be JP |
1468 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1469 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1470 | |
1471 | len = data_offset - server->total_read; | |
1472 | if (len > 0) { | |
1473 | /* read any junk before data into the rest of smallbuf */ | |
5819575e JL |
1474 | rdata->iov.iov_base = buf + server->total_read; |
1475 | rdata->iov.iov_len = len; | |
1476 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); | |
e28bc5b1 JL |
1477 | if (length < 0) |
1478 | return length; | |
1479 | server->total_read += length; | |
1480 | } | |
1481 | ||
1482 | /* set up first iov for signature check */ | |
5819575e JL |
1483 | rdata->iov.iov_base = buf; |
1484 | rdata->iov.iov_len = server->total_read; | |
f96637be JP |
1485 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1486 | rdata->iov.iov_base, rdata->iov.iov_len); | |
e28bc5b1 JL |
1487 | |
1488 | /* how much data is in the response? */ | |
eb378711 | 1489 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1490 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1491 | /* data_len is corrupt -- discard frame */ |
1492 | rdata->result = -EIO; | |
1493 | return cifs_readv_discard(server, mid); | |
1494 | } | |
1495 | ||
8321fec4 JL |
1496 | length = rdata->read_into_pages(server, rdata, data_len); |
1497 | if (length < 0) | |
1498 | return length; | |
e28bc5b1 | 1499 | |
8321fec4 | 1500 | server->total_read += length; |
e28bc5b1 JL |
1501 | rdata->bytes = length; |
1502 | ||
f96637be JP |
1503 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1504 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1505 | |
1506 | /* discard anything left over */ | |
5ffef7bf | 1507 | if (server->total_read < buflen) |
e28bc5b1 JL |
1508 | return cifs_readv_discard(server, mid); |
1509 | ||
1510 | dequeue_mid(mid, false); | |
1511 | return length; | |
1512 | } | |
1513 | ||
e28bc5b1 JL |
1514 | static void |
1515 | cifs_readv_callback(struct mid_q_entry *mid) | |
1516 | { | |
1517 | struct cifs_readdata *rdata = mid->callback_data; | |
1518 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1519 | struct TCP_Server_Info *server = tcon->ses->server; | |
5819575e JL |
1520 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
1521 | .rq_nvec = 1, | |
8321fec4 JL |
1522 | .rq_pages = rdata->pages, |
1523 | .rq_npages = rdata->nr_pages, | |
1524 | .rq_pagesz = rdata->pagesz, | |
1525 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1526 | |
f96637be JP |
1527 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1528 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1529 | rdata->bytes); | |
e28bc5b1 | 1530 | |
7c9421e1 | 1531 | switch (mid->mid_state) { |
e28bc5b1 JL |
1532 | case MID_RESPONSE_RECEIVED: |
1533 | /* result already set, check signature */ | |
38d77c50 | 1534 | if (server->sign) { |
985e4ff0 SF |
1535 | int rc = 0; |
1536 | ||
bf5ea0e2 | 1537 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1538 | mid->sequence_number); |
985e4ff0 | 1539 | if (rc) |
f96637be JP |
1540 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1541 | rc); | |
e28bc5b1 JL |
1542 | } |
1543 | /* FIXME: should this be counted toward the initiating task? */ | |
1544 | task_io_account_read(rdata->bytes); | |
1545 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1546 | break; | |
1547 | case MID_REQUEST_SUBMITTED: | |
1548 | case MID_RETRY_NEEDED: | |
1549 | rdata->result = -EAGAIN; | |
1550 | break; | |
1551 | default: | |
1552 | rdata->result = -EIO; | |
1553 | } | |
1554 | ||
da472fc8 | 1555 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1556 | DeleteMidQEntry(mid); |
a891f0f8 | 1557 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1558 | } |
1559 | ||
1560 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1561 | int | |
1562 | cifs_async_readv(struct cifs_readdata *rdata) | |
1563 | { | |
1564 | int rc; | |
1565 | READ_REQ *smb = NULL; | |
1566 | int wct; | |
1567 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
5819575e | 1568 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3 | 1569 | .rq_nvec = 1 }; |
e28bc5b1 | 1570 | |
f96637be JP |
1571 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1572 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1573 | |
1574 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1575 | wct = 12; | |
1576 | else { | |
1577 | wct = 10; /* old style read */ | |
1578 | if ((rdata->offset >> 32) > 0) { | |
1579 | /* can not handle this big offset for old */ | |
1580 | return -EIO; | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1585 | if (rc) | |
1586 | return rc; | |
1587 | ||
1588 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1589 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1590 | ||
1591 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1592 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1593 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1594 | if (wct == 12) | |
1595 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1596 | smb->Remaining = 0; | |
1597 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1598 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1599 | if (wct == 12) | |
1600 | smb->ByteCount = 0; | |
1601 | else { | |
1602 | /* old style read */ | |
1603 | struct smb_com_readx_req *smbr = | |
1604 | (struct smb_com_readx_req *)smb; | |
1605 | smbr->ByteCount = 0; | |
1606 | } | |
1607 | ||
1608 | /* 4 for RFC1001 length + 1 for BCC */ | |
5819575e JL |
1609 | rdata->iov.iov_base = smb; |
1610 | rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
e28bc5b1 | 1611 | |
6993f74a | 1612 | kref_get(&rdata->refcount); |
fec344e3 JL |
1613 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
1614 | cifs_readv_callback, rdata, 0); | |
e28bc5b1 JL |
1615 | |
1616 | if (rc == 0) | |
44c58186 | 1617 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1618 | else |
1619 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1620 | |
1621 | cifs_small_buf_release(smb); | |
1622 | return rc; | |
1623 | } | |
1624 | ||
1da177e4 | 1625 | int |
6d5786a3 PS |
1626 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1627 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1628 | { |
1629 | int rc = -EACCES; | |
1630 | READ_REQ *pSMB = NULL; | |
1631 | READ_RSP *pSMBr = NULL; | |
1632 | char *pReadData = NULL; | |
bfa0d75a | 1633 | int wct; |
ec637e3f SF |
1634 | int resp_buf_type = 0; |
1635 | struct kvec iov[1]; | |
d4ffff1f PS |
1636 | __u32 pid = io_parms->pid; |
1637 | __u16 netfid = io_parms->netfid; | |
1638 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1639 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1640 | unsigned int count = io_parms->length; |
1da177e4 | 1641 | |
f96637be | 1642 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1643 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1644 | wct = 12; |
4c3130ef | 1645 | else { |
bfa0d75a | 1646 | wct = 10; /* old style read */ |
d4ffff1f | 1647 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1648 | /* can not handle this big offset for old */ |
1649 | return -EIO; | |
1650 | } | |
1651 | } | |
1da177e4 LT |
1652 | |
1653 | *nbytes = 0; | |
ec637e3f | 1654 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1655 | if (rc) |
1656 | return rc; | |
1657 | ||
d4ffff1f PS |
1658 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1659 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1660 | ||
1da177e4 LT |
1661 | /* tcon and ses pointer are checked in smb_init */ |
1662 | if (tcon->ses->server == NULL) | |
1663 | return -ECONNABORTED; | |
1664 | ||
ec637e3f | 1665 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1666 | pSMB->Fid = netfid; |
d4ffff1f | 1667 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1668 | if (wct == 12) |
d4ffff1f | 1669 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1670 | |
1da177e4 LT |
1671 | pSMB->Remaining = 0; |
1672 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1673 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1674 | if (wct == 12) |
bfa0d75a SF |
1675 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1676 | else { | |
1677 | /* old style read */ | |
50c2f753 | 1678 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1679 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1680 | pSMBW->ByteCount = 0; |
bfa0d75a | 1681 | } |
ec637e3f SF |
1682 | |
1683 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1684 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1685 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1686 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1687 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1688 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1689 | if (rc) { |
f96637be | 1690 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1691 | } else { |
1692 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1693 | data_length = data_length << 16; | |
1694 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1695 | *nbytes = data_length; | |
1696 | ||
1697 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1698 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1699 | || (data_length > count)) { |
f96637be | 1700 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1701 | data_length, count); |
1da177e4 LT |
1702 | rc = -EIO; |
1703 | *nbytes = 0; | |
1704 | } else { | |
ec637e3f | 1705 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1706 | le16_to_cpu(pSMBr->DataOffset); |
1707 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1708 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1709 | rc = -EFAULT; |
26f57364 | 1710 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1711 | if (*buf) |
50c2f753 | 1712 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1713 | } |
1714 | } | |
1da177e4 | 1715 | |
4b8f930f | 1716 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1717 | if (*buf) { |
1718 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1719 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1720 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1721 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1722 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1723 | /* return buffer to caller to free */ |
1724 | *buf = iov[0].iov_base; | |
790fe579 | 1725 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1726 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1727 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1728 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1729 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1730 | |
1731 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1732 | since file handle passed in no longer valid */ |
1733 | return rc; | |
1734 | } | |
1735 | ||
ec637e3f | 1736 | |
1da177e4 | 1737 | int |
6d5786a3 | 1738 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 | 1739 | unsigned int *nbytes, const char *buf, |
50c2f753 | 1740 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1741 | { |
1742 | int rc = -EACCES; | |
1743 | WRITE_REQ *pSMB = NULL; | |
1744 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1745 | int bytes_returned, wct; |
1da177e4 LT |
1746 | __u32 bytes_sent; |
1747 | __u16 byte_count; | |
fa2989f4 PS |
1748 | __u32 pid = io_parms->pid; |
1749 | __u16 netfid = io_parms->netfid; | |
1750 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1751 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1752 | unsigned int count = io_parms->length; |
1da177e4 | 1753 | |
a24e2d7d SF |
1754 | *nbytes = 0; |
1755 | ||
f96637be | 1756 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1757 | if (tcon->ses == NULL) |
1c955187 SF |
1758 | return -ECONNABORTED; |
1759 | ||
790fe579 | 1760 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1761 | wct = 14; |
4c3130ef | 1762 | else { |
1c955187 | 1763 | wct = 12; |
4c3130ef SF |
1764 | if ((offset >> 32) > 0) { |
1765 | /* can not handle big offset for old srv */ | |
1766 | return -EIO; | |
1767 | } | |
1768 | } | |
1c955187 SF |
1769 | |
1770 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1771 | (void **) &pSMBr); |
1772 | if (rc) | |
1773 | return rc; | |
fa2989f4 PS |
1774 | |
1775 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1776 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1777 | ||
1da177e4 LT |
1778 | /* tcon and ses pointer are checked in smb_init */ |
1779 | if (tcon->ses->server == NULL) | |
1780 | return -ECONNABORTED; | |
1781 | ||
1782 | pSMB->AndXCommand = 0xFF; /* none */ | |
1783 | pSMB->Fid = netfid; | |
1784 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1785 | if (wct == 14) |
1c955187 | 1786 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1787 | |
1da177e4 LT |
1788 | pSMB->Reserved = 0xFFFFFFFF; |
1789 | pSMB->WriteMode = 0; | |
1790 | pSMB->Remaining = 0; | |
1791 | ||
50c2f753 | 1792 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1793 | can send more if LARGE_WRITE_X capability returned by the server and if |
1794 | our buffer is big enough or if we convert to iovecs on socket writes | |
1795 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1796 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1797 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1798 | } else { | |
1799 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1800 | & ~0xFF; | |
1801 | } | |
1802 | ||
1803 | if (bytes_sent > count) | |
1804 | bytes_sent = count; | |
1805 | pSMB->DataOffset = | |
50c2f753 | 1806 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1807 | if (buf) |
61e74801 | 1808 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1809 | else if (ubuf) { |
1810 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1811 | cifs_buf_release(pSMB); |
1812 | return -EFAULT; | |
1813 | } | |
e30dcf3a | 1814 | } else if (count != 0) { |
1da177e4 LT |
1815 | /* No buffer */ |
1816 | cifs_buf_release(pSMB); | |
1817 | return -EINVAL; | |
e30dcf3a | 1818 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1819 | if (wct == 14) |
e30dcf3a | 1820 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1821 | else /* wct == 12 */ |
e30dcf3a | 1822 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1823 | |
1da177e4 LT |
1824 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1825 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1826 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1827 | |
790fe579 | 1828 | if (wct == 14) |
1c955187 | 1829 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1830 | else { /* old style write has byte count 4 bytes earlier |
1831 | so 4 bytes pad */ | |
1832 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1833 | (struct smb_com_writex_req *)pSMB; |
1834 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1835 | } | |
1da177e4 LT |
1836 | |
1837 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1838 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
44c58186 | 1839 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1840 | if (rc) { |
f96637be | 1841 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1842 | } else { |
1843 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1844 | *nbytes = (*nbytes) << 16; | |
1845 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1846 | |
1847 | /* | |
1848 | * Mask off high 16 bits when bytes written as returned by the | |
1849 | * server is greater than bytes requested by the client. Some | |
1850 | * OS/2 servers are known to set incorrect CountHigh values. | |
1851 | */ | |
1852 | if (*nbytes > count) | |
1853 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1854 | } |
1855 | ||
1856 | cifs_buf_release(pSMB); | |
1857 | ||
50c2f753 | 1858 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1859 | since file handle passed in no longer valid */ |
1860 | ||
1861 | return rc; | |
1862 | } | |
1863 | ||
c28c89fc JL |
1864 | void |
1865 | cifs_writedata_release(struct kref *refcount) | |
1866 | { | |
1867 | struct cifs_writedata *wdata = container_of(refcount, | |
1868 | struct cifs_writedata, refcount); | |
1869 | ||
1870 | if (wdata->cfile) | |
1871 | cifsFileInfo_put(wdata->cfile); | |
1872 | ||
1873 | kfree(wdata); | |
1874 | } | |
1875 | ||
1876 | /* | |
1877 | * Write failed with a retryable error. Resend the write request. It's also | |
1878 | * possible that the page was redirtied so re-clean the page. | |
1879 | */ | |
1880 | static void | |
1881 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1882 | { | |
1883 | int i, rc; | |
1884 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
c9de5c80 | 1885 | struct TCP_Server_Info *server; |
c28c89fc JL |
1886 | |
1887 | for (i = 0; i < wdata->nr_pages; i++) { | |
1888 | lock_page(wdata->pages[i]); | |
1889 | clear_page_dirty_for_io(wdata->pages[i]); | |
1890 | } | |
1891 | ||
1892 | do { | |
c9de5c80 PS |
1893 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1894 | rc = server->ops->async_writev(wdata); | |
c28c89fc JL |
1895 | } while (rc == -EAGAIN); |
1896 | ||
1897 | for (i = 0; i < wdata->nr_pages; i++) { | |
94e18007 | 1898 | unlock_page(wdata->pages[i]); |
c51bb0ea | 1899 | if (rc != 0) { |
c28c89fc | 1900 | SetPageError(wdata->pages[i]); |
c51bb0ea OM |
1901 | end_page_writeback(wdata->pages[i]); |
1902 | page_cache_release(wdata->pages[i]); | |
1903 | } | |
c28c89fc JL |
1904 | } |
1905 | ||
1906 | mapping_set_error(inode->i_mapping, rc); | |
1907 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1908 | } | |
1909 | ||
c2e87640 | 1910 | void |
c28c89fc JL |
1911 | cifs_writev_complete(struct work_struct *work) |
1912 | { | |
1913 | struct cifs_writedata *wdata = container_of(work, | |
1914 | struct cifs_writedata, work); | |
1915 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1916 | int i = 0; | |
1917 | ||
1918 | if (wdata->result == 0) { | |
597b027f | 1919 | spin_lock(&inode->i_lock); |
c28c89fc | 1920 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1921 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1922 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1923 | wdata->bytes); | |
1924 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1925 | return cifs_writev_requeue(wdata); | |
1926 | ||
1927 | for (i = 0; i < wdata->nr_pages; i++) { | |
1928 | struct page *page = wdata->pages[i]; | |
1929 | if (wdata->result == -EAGAIN) | |
1930 | __set_page_dirty_nobuffers(page); | |
1931 | else if (wdata->result < 0) | |
1932 | SetPageError(page); | |
1933 | end_page_writeback(page); | |
1934 | page_cache_release(page); | |
1935 | } | |
1936 | if (wdata->result != -EAGAIN) | |
1937 | mapping_set_error(inode->i_mapping, wdata->result); | |
1938 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1939 | } | |
1940 | ||
1941 | struct cifs_writedata * | |
c2e87640 | 1942 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1943 | { |
1944 | struct cifs_writedata *wdata; | |
1945 | ||
1946 | /* this would overflow */ | |
1947 | if (nr_pages == 0) { | |
f96637be | 1948 | cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__); |
c28c89fc JL |
1949 | return NULL; |
1950 | } | |
1951 | ||
1952 | /* writedata + number of page pointers */ | |
1953 | wdata = kzalloc(sizeof(*wdata) + | |
1954 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1955 | if (wdata != NULL) { | |
c28c89fc | 1956 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1957 | INIT_LIST_HEAD(&wdata->list); |
1958 | init_completion(&wdata->done); | |
1959 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1960 | } |
1961 | return wdata; | |
1962 | } | |
1963 | ||
1964 | /* | |
7c9421e1 | 1965 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1966 | * workqueue completion task. |
1967 | */ | |
1968 | static void | |
1969 | cifs_writev_callback(struct mid_q_entry *mid) | |
1970 | { | |
1971 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1972 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1973 | unsigned int written; |
1974 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1975 | ||
7c9421e1 | 1976 | switch (mid->mid_state) { |
c28c89fc JL |
1977 | case MID_RESPONSE_RECEIVED: |
1978 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1979 | if (wdata->result != 0) | |
1980 | break; | |
1981 | ||
1982 | written = le16_to_cpu(smb->CountHigh); | |
1983 | written <<= 16; | |
1984 | written += le16_to_cpu(smb->Count); | |
1985 | /* | |
1986 | * Mask off high 16 bits when bytes written as returned | |
1987 | * by the server is greater than bytes requested by the | |
1988 | * client. OS/2 servers are known to set incorrect | |
1989 | * CountHigh values. | |
1990 | */ | |
1991 | if (written > wdata->bytes) | |
1992 | written &= 0xFFFF; | |
1993 | ||
1994 | if (written < wdata->bytes) | |
1995 | wdata->result = -ENOSPC; | |
1996 | else | |
1997 | wdata->bytes = written; | |
1998 | break; | |
1999 | case MID_REQUEST_SUBMITTED: | |
2000 | case MID_RETRY_NEEDED: | |
2001 | wdata->result = -EAGAIN; | |
2002 | break; | |
2003 | default: | |
2004 | wdata->result = -EIO; | |
2005 | break; | |
2006 | } | |
2007 | ||
da472fc8 | 2008 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2009 | DeleteMidQEntry(mid); |
a891f0f8 | 2010 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2011 | } |
2012 | ||
2013 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2014 | int | |
2015 | cifs_async_writev(struct cifs_writedata *wdata) | |
2016 | { | |
eddb079d | 2017 | int rc = -EACCES; |
c28c89fc JL |
2018 | WRITE_REQ *smb = NULL; |
2019 | int wct; | |
96daf2b0 | 2020 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079d | 2021 | struct kvec iov; |
fec344e3 | 2022 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2023 | |
2024 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2025 | wct = 14; | |
2026 | } else { | |
2027 | wct = 12; | |
2028 | if (wdata->offset >> 32 > 0) { | |
2029 | /* can not handle big offset for old srv */ | |
2030 | return -EIO; | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2035 | if (rc) | |
2036 | goto async_writev_out; | |
2037 | ||
fe5f5d2e JL |
2038 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2039 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2040 | |
c28c89fc | 2041 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2042 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2043 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2044 | if (wct == 14) | |
2045 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2046 | smb->Reserved = 0xFFFFFFFF; | |
2047 | smb->WriteMode = 0; | |
2048 | smb->Remaining = 0; | |
2049 | ||
2050 | smb->DataOffset = | |
2051 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2052 | ||
2053 | /* 4 for RFC1001 length + 1 for BCC */ | |
eddb079d JL |
2054 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; |
2055 | iov.iov_base = smb; | |
c28c89fc | 2056 | |
eddb079d JL |
2057 | rqst.rq_iov = &iov; |
2058 | rqst.rq_nvec = 1; | |
2059 | rqst.rq_pages = wdata->pages; | |
2060 | rqst.rq_npages = wdata->nr_pages; | |
2061 | rqst.rq_pagesz = wdata->pagesz; | |
2062 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2063 | |
f96637be JP |
2064 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2065 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2066 | |
2067 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2068 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2069 | ||
2070 | if (wct == 14) { | |
2071 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2072 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2073 | } else { | |
2074 | /* wct == 12 */ | |
2075 | struct smb_com_writex_req *smbw = | |
2076 | (struct smb_com_writex_req *)smb; | |
2077 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2078 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
eddb079d | 2079 | iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2080 | } |
2081 | ||
2082 | kref_get(&wdata->refcount); | |
fec344e3 JL |
2083 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
2084 | cifs_writev_callback, wdata, 0); | |
c28c89fc JL |
2085 | |
2086 | if (rc == 0) | |
44c58186 | 2087 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc JL |
2088 | else |
2089 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2090 | ||
c28c89fc JL |
2091 | async_writev_out: |
2092 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2093 | return rc; |
2094 | } | |
2095 | ||
d6e04ae6 | 2096 | int |
6d5786a3 | 2097 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2098 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2099 | { |
2100 | int rc = -EACCES; | |
2101 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2102 | int wct; |
d6e04ae6 | 2103 | int smb_hdr_len; |
ec637e3f | 2104 | int resp_buf_type = 0; |
fa2989f4 PS |
2105 | __u32 pid = io_parms->pid; |
2106 | __u16 netfid = io_parms->netfid; | |
2107 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2108 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2109 | unsigned int count = io_parms->length; |
1da177e4 | 2110 | |
fbec9ab9 JL |
2111 | *nbytes = 0; |
2112 | ||
f96637be | 2113 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2114 | |
4c3130ef | 2115 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2116 | wct = 14; |
4c3130ef | 2117 | } else { |
8cc64c6e | 2118 | wct = 12; |
4c3130ef SF |
2119 | if ((offset >> 32) > 0) { |
2120 | /* can not handle big offset for old srv */ | |
2121 | return -EIO; | |
2122 | } | |
2123 | } | |
8cc64c6e | 2124 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2125 | if (rc) |
2126 | return rc; | |
fa2989f4 PS |
2127 | |
2128 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2129 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2130 | ||
1da177e4 LT |
2131 | /* tcon and ses pointer are checked in smb_init */ |
2132 | if (tcon->ses->server == NULL) | |
2133 | return -ECONNABORTED; | |
2134 | ||
d6e04ae6 | 2135 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2136 | pSMB->Fid = netfid; |
2137 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2138 | if (wct == 14) |
8cc64c6e | 2139 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2140 | pSMB->Reserved = 0xFFFFFFFF; |
2141 | pSMB->WriteMode = 0; | |
2142 | pSMB->Remaining = 0; | |
d6e04ae6 | 2143 | |
1da177e4 | 2144 | pSMB->DataOffset = |
50c2f753 | 2145 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2146 | |
3e84469d SF |
2147 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2148 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2149 | /* header + 1 byte pad */ |
2150 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2151 | if (wct == 14) |
be8e3b00 | 2152 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2153 | else /* wct == 12 */ |
be8e3b00 | 2154 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2155 | if (wct == 14) |
8cc64c6e SF |
2156 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2157 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2158 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2159 | (struct smb_com_writex_req *)pSMB; |
2160 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2161 | } | |
3e84469d | 2162 | iov[0].iov_base = pSMB; |
790fe579 | 2163 | if (wct == 14) |
ec637e3f SF |
2164 | iov[0].iov_len = smb_hdr_len + 4; |
2165 | else /* wct == 12 pad bigger by four bytes */ | |
2166 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2167 | |
1da177e4 | 2168 | |
ba9ad725 | 2169 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c58186 | 2170 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2171 | if (rc) { |
f96637be | 2172 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2173 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2174 | /* presumably this can not happen, but best to be safe */ |
2175 | rc = -EIO; | |
d6e04ae6 | 2176 | } else { |
ad7a2926 | 2177 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2178 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2179 | *nbytes = (*nbytes) << 16; | |
2180 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2181 | |
2182 | /* | |
2183 | * Mask off high 16 bits when bytes written as returned by the | |
2184 | * server is greater than bytes requested by the client. OS/2 | |
2185 | * servers are known to set incorrect CountHigh values. | |
2186 | */ | |
2187 | if (*nbytes > count) | |
2188 | *nbytes &= 0xFFFF; | |
50c2f753 | 2189 | } |
1da177e4 | 2190 | |
4b8f930f | 2191 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2192 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2193 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2194 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2195 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2196 | |
50c2f753 | 2197 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2198 | since file handle passed in no longer valid */ |
2199 | ||
2200 | return rc; | |
2201 | } | |
d6e04ae6 | 2202 | |
6d5786a3 PS |
2203 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2204 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2205 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2206 | { | |
2207 | int rc = 0; | |
2208 | LOCK_REQ *pSMB = NULL; | |
2209 | struct kvec iov[2]; | |
2210 | int resp_buf_type; | |
2211 | __u16 count; | |
2212 | ||
f96637be JP |
2213 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2214 | num_lock, num_unlock); | |
9ee305b7 PS |
2215 | |
2216 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2217 | if (rc) | |
2218 | return rc; | |
2219 | ||
2220 | pSMB->Timeout = 0; | |
2221 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2222 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2223 | pSMB->LockType = lock_type; | |
2224 | pSMB->AndXCommand = 0xFF; /* none */ | |
2225 | pSMB->Fid = netfid; /* netfid stays le */ | |
2226 | ||
2227 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2228 | inc_rfc1001_len(pSMB, count); | |
2229 | pSMB->ByteCount = cpu_to_le16(count); | |
2230 | ||
2231 | iov[0].iov_base = (char *)pSMB; | |
2232 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2233 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2234 | iov[1].iov_base = (char *)buf; | |
2235 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2236 | ||
44c58186 | 2237 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2238 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2239 | if (rc) | |
f96637be | 2240 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2241 | |
2242 | return rc; | |
2243 | } | |
d6e04ae6 | 2244 | |
1da177e4 | 2245 | int |
6d5786a3 | 2246 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2247 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2248 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2249 | const __u32 numLock, const __u8 lockType, |
2250 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2251 | { |
2252 | int rc = 0; | |
2253 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2254 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2255 | int bytes_returned; |
a891f0f8 | 2256 | int flags = 0; |
1da177e4 LT |
2257 | __u16 count; |
2258 | ||
f96637be JP |
2259 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2260 | (int)waitFlag, numLock); | |
46810cbf SF |
2261 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2262 | ||
1da177e4 LT |
2263 | if (rc) |
2264 | return rc; | |
2265 | ||
790fe579 | 2266 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2267 | /* no response expected */ |
2268 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2269 | pSMB->Timeout = 0; |
4b18f2a9 | 2270 | } else if (waitFlag) { |
a891f0f8 | 2271 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2272 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2273 | } else { | |
2274 | pSMB->Timeout = 0; | |
2275 | } | |
2276 | ||
2277 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2278 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2279 | pSMB->LockType = lockType; | |
12fed00d | 2280 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2281 | pSMB->AndXCommand = 0xFF; /* none */ |
2282 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2283 | ||
790fe579 | 2284 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2285 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2286 | /* BB where to store pid high? */ |
2287 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2288 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2289 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2290 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2291 | count = sizeof(LOCKING_ANDX_RANGE); | |
2292 | } else { | |
2293 | /* oplock break */ | |
2294 | count = 0; | |
2295 | } | |
be8e3b00 | 2296 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2297 | pSMB->ByteCount = cpu_to_le16(count); |
2298 | ||
7ee1af76 JA |
2299 | if (waitFlag) { |
2300 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2301 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2302 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2303 | } else { |
a891f0f8 | 2304 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2305 | /* SMB buffer freed by function above */ |
7ee1af76 | 2306 | } |
44c58186 | 2307 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2308 | if (rc) |
f96637be | 2309 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2310 | |
50c2f753 | 2311 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2312 | since file handle passed in no longer valid */ |
2313 | return rc; | |
2314 | } | |
2315 | ||
08547b03 | 2316 | int |
6d5786a3 | 2317 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2318 | const __u16 smb_file_id, const __u32 netpid, |
2319 | const loff_t start_offset, const __u64 len, | |
2320 | struct file_lock *pLockData, const __u16 lock_type, | |
2321 | const bool waitFlag) | |
08547b03 SF |
2322 | { |
2323 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2324 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2325 | struct cifs_posix_lock *parm_data; |
2326 | int rc = 0; | |
3a5ff61c | 2327 | int timeout = 0; |
08547b03 | 2328 | int bytes_returned = 0; |
133672ef | 2329 | int resp_buf_type = 0; |
08547b03 | 2330 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2331 | struct kvec iov[1]; |
08547b03 | 2332 | |
f96637be | 2333 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2334 | |
08547b03 SF |
2335 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2336 | ||
2337 | if (rc) | |
2338 | return rc; | |
2339 | ||
2340 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2341 | ||
50c2f753 | 2342 | params = 6; |
08547b03 SF |
2343 | pSMB->MaxSetupCount = 0; |
2344 | pSMB->Reserved = 0; | |
2345 | pSMB->Flags = 0; | |
08547b03 SF |
2346 | pSMB->Reserved2 = 0; |
2347 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2348 | offset = param_offset + params; | |
2349 | ||
08547b03 SF |
2350 | count = sizeof(struct cifs_posix_lock); |
2351 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2352 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2353 | pSMB->SetupCount = 1; |
2354 | pSMB->Reserved3 = 0; | |
c5fd363d | 2355 | if (pLockData) |
08547b03 SF |
2356 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2357 | else | |
2358 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2359 | byte_count = 3 /* pad */ + params + count; | |
2360 | pSMB->DataCount = cpu_to_le16(count); | |
2361 | pSMB->ParameterCount = cpu_to_le16(params); | |
2362 | pSMB->TotalDataCount = pSMB->DataCount; | |
2363 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2364 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2365 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2366 | (((char *) &pSMB->hdr.Protocol) + offset); |
2367 | ||
2368 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2369 | if (waitFlag) { |
133672ef | 2370 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2371 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2372 | pSMB->Timeout = cpu_to_le32(-1); |
2373 | } else | |
2374 | pSMB->Timeout = 0; | |
2375 | ||
4f6bcec9 | 2376 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2377 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2378 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2379 | |
2380 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2381 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2382 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2383 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2384 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2385 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2386 | if (waitFlag) { |
2387 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2388 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2389 | } else { | |
133672ef | 2390 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2391 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2392 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2393 | &resp_buf_type, timeout); | |
2394 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2395 | not try to free it twice below on exit */ | |
2396 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2397 | } |
2398 | ||
08547b03 | 2399 | if (rc) { |
f96637be | 2400 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2401 | } else if (pLockData) { |
fc94cdb9 SF |
2402 | /* lock structure can be returned on get */ |
2403 | __u16 data_offset; | |
2404 | __u16 data_count; | |
2405 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2406 | ||
820a803f | 2407 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2408 | rc = -EIO; /* bad smb */ |
2409 | goto plk_err_exit; | |
2410 | } | |
fc94cdb9 SF |
2411 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2412 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2413 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2414 | rc = -EIO; |
2415 | goto plk_err_exit; | |
2416 | } | |
2417 | parm_data = (struct cifs_posix_lock *) | |
2418 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2419 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2420 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2421 | else { |
2422 | if (parm_data->lock_type == | |
2423 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2424 | pLockData->fl_type = F_RDLCK; | |
2425 | else if (parm_data->lock_type == | |
2426 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2427 | pLockData->fl_type = F_WRLCK; | |
2428 | ||
5443d130 SF |
2429 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2430 | pLockData->fl_end = pLockData->fl_start + | |
2431 | le64_to_cpu(parm_data->length) - 1; | |
2432 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2433 | } |
08547b03 | 2434 | } |
50c2f753 | 2435 | |
fc94cdb9 | 2436 | plk_err_exit: |
08547b03 SF |
2437 | if (pSMB) |
2438 | cifs_small_buf_release(pSMB); | |
2439 | ||
133672ef SF |
2440 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2441 | cifs_small_buf_release(iov[0].iov_base); | |
2442 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2443 | cifs_buf_release(iov[0].iov_base); | |
2444 | ||
08547b03 SF |
2445 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2446 | since file handle passed in no longer valid */ | |
2447 | ||
2448 | return rc; | |
2449 | } | |
2450 | ||
2451 | ||
1da177e4 | 2452 | int |
6d5786a3 | 2453 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2454 | { |
2455 | int rc = 0; | |
2456 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2457 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2458 | |
2459 | /* do not retry on dead session on close */ | |
2460 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2461 | if (rc == -EAGAIN) |
1da177e4 LT |
2462 | return 0; |
2463 | if (rc) | |
2464 | return rc; | |
2465 | ||
1da177e4 | 2466 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2467 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2468 | pSMB->ByteCount = 0; |
792af7b0 | 2469 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2470 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2471 | if (rc) { |
790fe579 | 2472 | if (rc != -EINTR) { |
1da177e4 | 2473 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2474 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2475 | } |
2476 | } | |
2477 | ||
1da177e4 | 2478 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2479 | if (rc == -EAGAIN) |
1da177e4 LT |
2480 | rc = 0; |
2481 | ||
2482 | return rc; | |
2483 | } | |
2484 | ||
b298f223 | 2485 | int |
6d5786a3 | 2486 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2487 | { |
2488 | int rc = 0; | |
2489 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2490 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2491 | |
2492 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2493 | if (rc) | |
2494 | return rc; | |
2495 | ||
2496 | pSMB->FileID = (__u16) smb_file_id; | |
2497 | pSMB->ByteCount = 0; | |
792af7b0 | 2498 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2499 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2500 | if (rc) |
f96637be | 2501 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2502 | |
2503 | return rc; | |
2504 | } | |
2505 | ||
1da177e4 | 2506 | int |
6d5786a3 | 2507 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2508 | const char *from_name, const char *to_name, |
2509 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2510 | { |
2511 | int rc = 0; | |
2512 | RENAME_REQ *pSMB = NULL; | |
2513 | RENAME_RSP *pSMBr = NULL; | |
2514 | int bytes_returned; | |
2515 | int name_len, name_len2; | |
2516 | __u16 count; | |
8ceb9843 | 2517 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2518 | |
f96637be | 2519 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2520 | renameRetry: |
2521 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2522 | (void **) &pSMBr); | |
2523 | if (rc) | |
2524 | return rc; | |
2525 | ||
2526 | pSMB->BufferFormat = 0x04; | |
2527 | pSMB->SearchAttributes = | |
2528 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2529 | ATTR_DIRECTORY); | |
2530 | ||
2531 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2532 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2533 | from_name, PATH_MAX, | |
2534 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2535 | name_len++; /* trailing null */ |
2536 | name_len *= 2; | |
2537 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2538 | /* protocol requires ASCII signature byte on Unicode string */ | |
2539 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2540 | name_len2 = | |
acbbb76a | 2541 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2542 | to_name, PATH_MAX, cifs_sb->local_nls, |
2543 | remap); | |
1da177e4 LT |
2544 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2545 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2546 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2547 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2548 | name_len++; /* trailing null */ |
8ceb9843 PS |
2549 | strncpy(pSMB->OldFileName, from_name, name_len); |
2550 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2551 | name_len2++; /* trailing null */ |
2552 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2553 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2554 | name_len2++; /* trailing null */ |
2555 | name_len2++; /* signature byte */ | |
2556 | } | |
2557 | ||
2558 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2559 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2560 | pSMB->ByteCount = cpu_to_le16(count); |
2561 | ||
2562 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2563 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2564 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2565 | if (rc) |
f96637be | 2566 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2567 | |
1da177e4 LT |
2568 | cifs_buf_release(pSMB); |
2569 | ||
2570 | if (rc == -EAGAIN) | |
2571 | goto renameRetry; | |
2572 | ||
2573 | return rc; | |
2574 | } | |
2575 | ||
6d5786a3 | 2576 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2577 | int netfid, const char *target_name, |
50c2f753 | 2578 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2579 | { |
2580 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2581 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2582 | struct set_file_rename *rename_info; |
1da177e4 LT |
2583 | char *data_offset; |
2584 | char dummy_string[30]; | |
2585 | int rc = 0; | |
2586 | int bytes_returned = 0; | |
2587 | int len_of_str; | |
2588 | __u16 params, param_offset, offset, count, byte_count; | |
2589 | ||
f96637be | 2590 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2591 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2592 | (void **) &pSMBr); | |
2593 | if (rc) | |
2594 | return rc; | |
2595 | ||
2596 | params = 6; | |
2597 | pSMB->MaxSetupCount = 0; | |
2598 | pSMB->Reserved = 0; | |
2599 | pSMB->Flags = 0; | |
2600 | pSMB->Timeout = 0; | |
2601 | pSMB->Reserved2 = 0; | |
2602 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2603 | offset = param_offset + params; | |
2604 | ||
2605 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2606 | rename_info = (struct set_file_rename *) data_offset; | |
2607 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2608 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2609 | pSMB->SetupCount = 1; |
2610 | pSMB->Reserved3 = 0; | |
2611 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2612 | byte_count = 3 /* pad */ + params; | |
2613 | pSMB->ParameterCount = cpu_to_le16(params); | |
2614 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2615 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2616 | pSMB->DataOffset = cpu_to_le16(offset); | |
2617 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2618 | rename_info->overwrite = cpu_to_le32(1); | |
2619 | rename_info->root_fid = 0; | |
2620 | /* unicode only call */ | |
790fe579 | 2621 | if (target_name == NULL) { |
50c2f753 | 2622 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2623 | len_of_str = |
2624 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2625 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2626 | } else { |
acbbb76a SF |
2627 | len_of_str = |
2628 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2629 | target_name, PATH_MAX, nls_codepage, |
2630 | remap); | |
1da177e4 LT |
2631 | } |
2632 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2633 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2634 | byte_count += count; |
2635 | pSMB->DataCount = cpu_to_le16(count); | |
2636 | pSMB->TotalDataCount = pSMB->DataCount; | |
2637 | pSMB->Fid = netfid; | |
2638 | pSMB->InformationLevel = | |
2639 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2640 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2641 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2642 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2643 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2644 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2645 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2646 | if (rc) |
f96637be JP |
2647 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2648 | rc); | |
a5a2b489 | 2649 | |
1da177e4 LT |
2650 | cifs_buf_release(pSMB); |
2651 | ||
2652 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2653 | since file handle passed in no longer valid */ | |
2654 | ||
2655 | return rc; | |
2656 | } | |
2657 | ||
2658 | int | |
6d5786a3 PS |
2659 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2660 | const char *fromName, const __u16 target_tid, const char *toName, | |
2661 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2662 | { |
2663 | int rc = 0; | |
2664 | COPY_REQ *pSMB = NULL; | |
2665 | COPY_RSP *pSMBr = NULL; | |
2666 | int bytes_returned; | |
2667 | int name_len, name_len2; | |
2668 | __u16 count; | |
2669 | ||
f96637be | 2670 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2671 | copyRetry: |
2672 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2673 | (void **) &pSMBr); | |
2674 | if (rc) | |
2675 | return rc; | |
2676 | ||
2677 | pSMB->BufferFormat = 0x04; | |
2678 | pSMB->Tid2 = target_tid; | |
2679 | ||
2680 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2681 | ||
2682 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2683 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2684 | fromName, PATH_MAX, nls_codepage, | |
2685 | remap); | |
1da177e4 LT |
2686 | name_len++; /* trailing null */ |
2687 | name_len *= 2; | |
2688 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2689 | /* protocol requires ASCII signature byte on Unicode string */ | |
2690 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2691 | name_len2 = |
acbbb76a SF |
2692 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2693 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2694 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2695 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2696 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2697 | name_len = strnlen(fromName, PATH_MAX); |
2698 | name_len++; /* trailing null */ | |
2699 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2700 | name_len2 = strnlen(toName, PATH_MAX); | |
2701 | name_len2++; /* trailing null */ | |
2702 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2703 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2704 | name_len2++; /* trailing null */ | |
2705 | name_len2++; /* signature byte */ | |
2706 | } | |
2707 | ||
2708 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2709 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2710 | pSMB->ByteCount = cpu_to_le16(count); |
2711 | ||
2712 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2713 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2714 | if (rc) { | |
f96637be JP |
2715 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2716 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2717 | } |
0d817bc0 | 2718 | cifs_buf_release(pSMB); |
1da177e4 LT |
2719 | |
2720 | if (rc == -EAGAIN) | |
2721 | goto copyRetry; | |
2722 | ||
2723 | return rc; | |
2724 | } | |
2725 | ||
2726 | int | |
6d5786a3 | 2727 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2728 | const char *fromName, const char *toName, |
2729 | const struct nls_table *nls_codepage) | |
2730 | { | |
2731 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2732 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2733 | char *data_offset; | |
2734 | int name_len; | |
2735 | int name_len_target; | |
2736 | int rc = 0; | |
2737 | int bytes_returned = 0; | |
2738 | __u16 params, param_offset, offset, byte_count; | |
2739 | ||
f96637be | 2740 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2741 | createSymLinkRetry: |
2742 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2743 | (void **) &pSMBr); | |
2744 | if (rc) | |
2745 | return rc; | |
2746 | ||
2747 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2748 | name_len = | |
acbbb76a SF |
2749 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2750 | /* find define for this maxpathcomponent */ | |
2751 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2752 | name_len++; /* trailing null */ |
2753 | name_len *= 2; | |
2754 | ||
50c2f753 | 2755 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2756 | name_len = strnlen(fromName, PATH_MAX); |
2757 | name_len++; /* trailing null */ | |
2758 | strncpy(pSMB->FileName, fromName, name_len); | |
2759 | } | |
2760 | params = 6 + name_len; | |
2761 | pSMB->MaxSetupCount = 0; | |
2762 | pSMB->Reserved = 0; | |
2763 | pSMB->Flags = 0; | |
2764 | pSMB->Timeout = 0; | |
2765 | pSMB->Reserved2 = 0; | |
2766 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2767 | InformationLevel) - 4; |
1da177e4 LT |
2768 | offset = param_offset + params; |
2769 | ||
2770 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2771 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2772 | name_len_target = | |
acbbb76a SF |
2773 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2774 | /* find define for this maxpathcomponent */ | |
2775 | , nls_codepage); | |
1da177e4 LT |
2776 | name_len_target++; /* trailing null */ |
2777 | name_len_target *= 2; | |
50c2f753 | 2778 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2779 | name_len_target = strnlen(toName, PATH_MAX); |
2780 | name_len_target++; /* trailing null */ | |
2781 | strncpy(data_offset, toName, name_len_target); | |
2782 | } | |
2783 | ||
2784 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2785 | /* BB find exact max on data count below from sess */ | |
2786 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2787 | pSMB->SetupCount = 1; | |
2788 | pSMB->Reserved3 = 0; | |
2789 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2790 | byte_count = 3 /* pad */ + params + name_len_target; | |
2791 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2792 | pSMB->ParameterCount = cpu_to_le16(params); | |
2793 | pSMB->TotalDataCount = pSMB->DataCount; | |
2794 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2795 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2796 | pSMB->DataOffset = cpu_to_le16(offset); | |
2797 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2798 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2799 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2800 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2801 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2802 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2803 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2804 | if (rc) |
f96637be JP |
2805 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2806 | rc); | |
1da177e4 | 2807 | |
0d817bc0 | 2808 | cifs_buf_release(pSMB); |
1da177e4 LT |
2809 | |
2810 | if (rc == -EAGAIN) | |
2811 | goto createSymLinkRetry; | |
2812 | ||
2813 | return rc; | |
2814 | } | |
2815 | ||
2816 | int | |
6d5786a3 | 2817 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2818 | const char *fromName, const char *toName, |
737b758c | 2819 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2820 | { |
2821 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2822 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2823 | char *data_offset; | |
2824 | int name_len; | |
2825 | int name_len_target; | |
2826 | int rc = 0; | |
2827 | int bytes_returned = 0; | |
2828 | __u16 params, param_offset, offset, byte_count; | |
2829 | ||
f96637be | 2830 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2831 | createHardLinkRetry: |
2832 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2833 | (void **) &pSMBr); | |
2834 | if (rc) | |
2835 | return rc; | |
2836 | ||
2837 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2838 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2839 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2840 | name_len++; /* trailing null */ |
2841 | name_len *= 2; | |
2842 | ||
50c2f753 | 2843 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2844 | name_len = strnlen(toName, PATH_MAX); |
2845 | name_len++; /* trailing null */ | |
2846 | strncpy(pSMB->FileName, toName, name_len); | |
2847 | } | |
2848 | params = 6 + name_len; | |
2849 | pSMB->MaxSetupCount = 0; | |
2850 | pSMB->Reserved = 0; | |
2851 | pSMB->Flags = 0; | |
2852 | pSMB->Timeout = 0; | |
2853 | pSMB->Reserved2 = 0; | |
2854 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2855 | InformationLevel) - 4; |
1da177e4 LT |
2856 | offset = param_offset + params; |
2857 | ||
2858 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2859 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2860 | name_len_target = | |
acbbb76a SF |
2861 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2862 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2863 | name_len_target++; /* trailing null */ |
2864 | name_len_target *= 2; | |
50c2f753 | 2865 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2866 | name_len_target = strnlen(fromName, PATH_MAX); |
2867 | name_len_target++; /* trailing null */ | |
2868 | strncpy(data_offset, fromName, name_len_target); | |
2869 | } | |
2870 | ||
2871 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2872 | /* BB find exact max on data count below from sess*/ | |
2873 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2874 | pSMB->SetupCount = 1; | |
2875 | pSMB->Reserved3 = 0; | |
2876 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2877 | byte_count = 3 /* pad */ + params + name_len_target; | |
2878 | pSMB->ParameterCount = cpu_to_le16(params); | |
2879 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2880 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2881 | pSMB->TotalDataCount = pSMB->DataCount; | |
2882 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2883 | pSMB->DataOffset = cpu_to_le16(offset); | |
2884 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2885 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2886 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2887 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2888 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2889 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2890 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2891 | if (rc) |
f96637be JP |
2892 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2893 | rc); | |
1da177e4 LT |
2894 | |
2895 | cifs_buf_release(pSMB); | |
2896 | if (rc == -EAGAIN) | |
2897 | goto createHardLinkRetry; | |
2898 | ||
2899 | return rc; | |
2900 | } | |
2901 | ||
2902 | int | |
6d5786a3 | 2903 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2904 | const char *from_name, const char *to_name, |
2905 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2906 | { |
2907 | int rc = 0; | |
2908 | NT_RENAME_REQ *pSMB = NULL; | |
2909 | RENAME_RSP *pSMBr = NULL; | |
2910 | int bytes_returned; | |
2911 | int name_len, name_len2; | |
2912 | __u16 count; | |
d6e906f1 | 2913 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2914 | |
f96637be | 2915 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2916 | winCreateHardLinkRetry: |
2917 | ||
2918 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2919 | (void **) &pSMBr); | |
2920 | if (rc) | |
2921 | return rc; | |
2922 | ||
2923 | pSMB->SearchAttributes = | |
2924 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2925 | ATTR_DIRECTORY); | |
2926 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2927 | pSMB->ClusterCount = 0; | |
2928 | ||
2929 | pSMB->BufferFormat = 0x04; | |
2930 | ||
2931 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2932 | name_len = | |
d6e906f1 SF |
2933 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2934 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2935 | name_len++; /* trailing null */ |
2936 | name_len *= 2; | |
fcc7c09d JL |
2937 | |
2938 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2939 | pSMB->OldFileName[name_len] = 0x04; | |
2940 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2941 | name_len2 = |
acbbb76a | 2942 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2943 | to_name, PATH_MAX, cifs_sb->local_nls, |
2944 | remap); | |
1da177e4 LT |
2945 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2946 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2947 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 2948 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2949 | name_len++; /* trailing null */ |
d6e906f1 SF |
2950 | strncpy(pSMB->OldFileName, from_name, name_len); |
2951 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2952 | name_len2++; /* trailing null */ |
2953 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 2954 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2955 | name_len2++; /* trailing null */ |
2956 | name_len2++; /* signature byte */ | |
2957 | } | |
2958 | ||
2959 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2960 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2961 | pSMB->ByteCount = cpu_to_le16(count); |
2962 | ||
2963 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2964 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2965 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2966 | if (rc) |
f96637be | 2967 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 2968 | |
1da177e4 LT |
2969 | cifs_buf_release(pSMB); |
2970 | if (rc == -EAGAIN) | |
2971 | goto winCreateHardLinkRetry; | |
2972 | ||
2973 | return rc; | |
2974 | } | |
2975 | ||
2976 | int | |
6d5786a3 | 2977 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2978 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2979 | const struct nls_table *nls_codepage) |
2980 | { | |
2981 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2982 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2983 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2984 | int rc = 0; | |
2985 | int bytes_returned; | |
2986 | int name_len; | |
2987 | __u16 params, byte_count; | |
460b9696 | 2988 | char *data_start; |
1da177e4 | 2989 | |
f96637be | 2990 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
2991 | |
2992 | querySymLinkRetry: | |
2993 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2994 | (void **) &pSMBr); | |
2995 | if (rc) | |
2996 | return rc; | |
2997 | ||
2998 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2999 | name_len = | |
acbbb76a SF |
3000 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3001 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3002 | name_len++; /* trailing null */ |
3003 | name_len *= 2; | |
50c2f753 | 3004 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3005 | name_len = strnlen(searchName, PATH_MAX); |
3006 | name_len++; /* trailing null */ | |
3007 | strncpy(pSMB->FileName, searchName, name_len); | |
3008 | } | |
3009 | ||
3010 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3011 | pSMB->TotalDataCount = 0; | |
3012 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3013 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3014 | pSMB->MaxSetupCount = 0; |
3015 | pSMB->Reserved = 0; | |
3016 | pSMB->Flags = 0; | |
3017 | pSMB->Timeout = 0; | |
3018 | pSMB->Reserved2 = 0; | |
3019 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3020 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3021 | pSMB->DataCount = 0; |
3022 | pSMB->DataOffset = 0; | |
3023 | pSMB->SetupCount = 1; | |
3024 | pSMB->Reserved3 = 0; | |
3025 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3026 | byte_count = params + 1 /* pad */ ; | |
3027 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3028 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3029 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3030 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3031 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3032 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3033 | ||
3034 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3035 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3036 | if (rc) { | |
f96637be | 3037 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3038 | } else { |
3039 | /* decode response */ | |
3040 | ||
3041 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3042 | /* BB also check enough total bytes returned */ |
820a803f | 3043 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3044 | rc = -EIO; |
1da177e4 | 3045 | else { |
0e0d2cf3 | 3046 | bool is_unicode; |
460b9696 JL |
3047 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3048 | ||
3049 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3050 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3051 | |
0e0d2cf3 SF |
3052 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3053 | is_unicode = true; | |
3054 | else | |
3055 | is_unicode = false; | |
3056 | ||
737b758c | 3057 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3058 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3059 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3060 | if (!*symlinkinfo) |
460b9696 | 3061 | rc = -ENOMEM; |
1da177e4 LT |
3062 | } |
3063 | } | |
3064 | cifs_buf_release(pSMB); | |
3065 | if (rc == -EAGAIN) | |
3066 | goto querySymLinkRetry; | |
3067 | return rc; | |
3068 | } | |
3069 | ||
c52a9554 SF |
3070 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3071 | /* | |
3072 | * Recent Windows versions now create symlinks more frequently | |
3073 | * and they use the "reparse point" mechanism below. We can of course | |
3074 | * do symlinks nicely to Samba and other servers which support the | |
3075 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3076 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3077 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3078 | * In the interim this code has been moved to its own config option so | |
3079 | * it is not compiled in by default until callers fixed up and more tested. | |
3080 | */ | |
1da177e4 | 3081 | int |
6d5786a3 | 3082 | CIFSSMBQueryReparseLinkInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3083 | const unsigned char *searchName, |
50c2f753 | 3084 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3085 | const struct nls_table *nls_codepage) |
3086 | { | |
3087 | int rc = 0; | |
3088 | int bytes_returned; | |
50c2f753 SF |
3089 | struct smb_com_transaction_ioctl_req *pSMB; |
3090 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3091 | |
f96637be JP |
3092 | cifs_dbg(FYI, "In Windows reparse style QueryLink for path %s\n", |
3093 | searchName); | |
1da177e4 LT |
3094 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3095 | (void **) &pSMBr); | |
3096 | if (rc) | |
3097 | return rc; | |
3098 | ||
3099 | pSMB->TotalParameterCount = 0 ; | |
3100 | pSMB->TotalDataCount = 0; | |
3101 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3102 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3103 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3104 | pSMB->MaxSetupCount = 4; |
3105 | pSMB->Reserved = 0; | |
3106 | pSMB->ParameterOffset = 0; | |
3107 | pSMB->DataCount = 0; | |
3108 | pSMB->DataOffset = 0; | |
3109 | pSMB->SetupCount = 4; | |
3110 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3111 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3112 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3113 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3114 | pSMB->IsRootFlag = 0; | |
3115 | pSMB->Fid = fid; /* file handle always le */ | |
3116 | pSMB->ByteCount = 0; | |
3117 | ||
3118 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3119 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3120 | if (rc) { | |
f96637be | 3121 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
1da177e4 LT |
3122 | } else { /* decode response */ |
3123 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3124 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3125 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3126 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3127 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3128 | goto qreparse_out; |
3129 | } | |
3130 | if (data_count && (data_count < 2048)) { | |
3131 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3132 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3133 | |
afe48c31 | 3134 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3135 | (struct reparse_data *) |
3136 | ((char *)&pSMBr->hdr.Protocol | |
3137 | + data_offset); | |
afe48c31 SF |
3138 | if ((char *)reparse_buf >= end_of_smb) { |
3139 | rc = -EIO; | |
3140 | goto qreparse_out; | |
3141 | } | |
3142 | if ((reparse_buf->LinkNamesBuf + | |
3143 | reparse_buf->TargetNameOffset + | |
3144 | reparse_buf->TargetNameLen) > end_of_smb) { | |
f96637be | 3145 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
afe48c31 SF |
3146 | rc = -EIO; |
3147 | goto qreparse_out; | |
3148 | } | |
50c2f753 | 3149 | |
afe48c31 SF |
3150 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3151 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3152 | (reparse_buf->LinkNamesBuf + |
3153 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3154 | buflen, |
3155 | reparse_buf->TargetNameLen, | |
3156 | nls_codepage, 0); | |
3157 | } else { /* ASCII names */ | |
3158 | strncpy(symlinkinfo, | |
3159 | reparse_buf->LinkNamesBuf + | |
3160 | reparse_buf->TargetNameOffset, | |
3161 | min_t(const int, buflen, | |
3162 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3163 | } |
afe48c31 SF |
3164 | } else { |
3165 | rc = -EIO; | |
f96637be | 3166 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); |
1da177e4 | 3167 | } |
afe48c31 SF |
3168 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3169 | does not go off the end of the buffer */ | |
f96637be | 3170 | cifs_dbg(FYI, "readlink result - %s\n", symlinkinfo); |
1da177e4 | 3171 | } |
989c7e51 | 3172 | |
1da177e4 | 3173 | qreparse_out: |
4a6d87f1 | 3174 | cifs_buf_release(pSMB); |
1da177e4 LT |
3175 | |
3176 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3177 | since file handle passed in no longer valid */ | |
3178 | ||
3179 | return rc; | |
3180 | } | |
c52a9554 | 3181 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3182 | |
3183 | #ifdef CONFIG_CIFS_POSIX | |
3184 | ||
3185 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3186 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3187 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3188 | { |
3189 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3190 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3191 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3192 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3193 | /* |
3194 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3195 | ace->e_perm, ace->e_tag, ace->e_id); | |
3196 | */ | |
1da177e4 LT |
3197 | |
3198 | return; | |
3199 | } | |
3200 | ||
3201 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3202 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3203 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3204 | { |
3205 | int size = 0; | |
3206 | int i; | |
3207 | __u16 count; | |
50c2f753 SF |
3208 | struct cifs_posix_ace *pACE; |
3209 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3210 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3211 | |
3212 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3213 | return -EOPNOTSUPP; | |
3214 | ||
790fe579 | 3215 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3216 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3217 | pACE = &cifs_acl->ace_array[0]; | |
3218 | size = sizeof(struct cifs_posix_acl); | |
3219 | size += sizeof(struct cifs_posix_ace) * count; | |
3220 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3221 | if (size_of_data_area < size) { |
f96637be JP |
3222 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3223 | size_of_data_area, size); | |
1da177e4 LT |
3224 | return -EINVAL; |
3225 | } | |
790fe579 | 3226 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3227 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3228 | size = sizeof(struct cifs_posix_acl); | |
3229 | size += sizeof(struct cifs_posix_ace) * count; | |
3230 | /* skip past access ACEs to get to default ACEs */ | |
3231 | pACE = &cifs_acl->ace_array[count]; | |
3232 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3233 | size += sizeof(struct cifs_posix_ace) * count; | |
3234 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3235 | if (size_of_data_area < size) |
1da177e4 LT |
3236 | return -EINVAL; |
3237 | } else { | |
3238 | /* illegal type */ | |
3239 | return -EINVAL; | |
3240 | } | |
3241 | ||
3242 | size = posix_acl_xattr_size(count); | |
790fe579 | 3243 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3244 | /* used to query ACL EA size */ |
790fe579 | 3245 | } else if (size > buflen) { |
1da177e4 LT |
3246 | return -ERANGE; |
3247 | } else /* buffer big enough */ { | |
ff7feac9 | 3248 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3249 | for (i = 0; i < count ; i++) { |
3250 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3251 | pACE++; | |
1da177e4 LT |
3252 | } |
3253 | } | |
3254 | return size; | |
3255 | } | |
3256 | ||
50c2f753 SF |
3257 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3258 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3259 | { |
3260 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3261 | ||
ff7feac9 SF |
3262 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3263 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3264 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3265 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3266 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3267 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3268 | } else |
ff7feac9 | 3269 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3270 | /* |
3271 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3272 | ace->e_perm, ace->e_tag, ace->e_id); | |
3273 | */ | |
1da177e4 LT |
3274 | return rc; |
3275 | } | |
3276 | ||
3277 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3278 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3279 | const int buflen, const int acl_type) | |
1da177e4 LT |
3280 | { |
3281 | __u16 rc = 0; | |
50c2f753 SF |
3282 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3283 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3284 | int count; |
3285 | int i; | |
3286 | ||
790fe579 | 3287 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3288 | return 0; |
3289 | ||
3290 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3291 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3292 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3293 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3294 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3295 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3296 | return 0; |
3297 | } | |
3298 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3299 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3300 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3301 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3302 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3303 | else { |
f96637be | 3304 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3305 | return 0; |
3306 | } | |
50c2f753 | 3307 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3308 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3309 | &local_acl->a_entries[i]); | |
790fe579 | 3310 | if (rc != 0) { |
1da177e4 LT |
3311 | /* ACE not converted */ |
3312 | break; | |
3313 | } | |
3314 | } | |
790fe579 | 3315 | if (rc == 0) { |
1da177e4 LT |
3316 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3317 | rc += sizeof(struct cifs_posix_acl); | |
3318 | /* BB add check to make sure ACL does not overflow SMB */ | |
3319 | } | |
3320 | return rc; | |
3321 | } | |
3322 | ||
3323 | int | |
6d5786a3 | 3324 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3325 | const unsigned char *searchName, |
3326 | char *acl_inf, const int buflen, const int acl_type, | |
3327 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3328 | { |
3329 | /* SMB_QUERY_POSIX_ACL */ | |
3330 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3331 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3332 | int rc = 0; | |
3333 | int bytes_returned; | |
3334 | int name_len; | |
3335 | __u16 params, byte_count; | |
50c2f753 | 3336 | |
f96637be | 3337 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3338 | |
3339 | queryAclRetry: | |
3340 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3341 | (void **) &pSMBr); | |
3342 | if (rc) | |
3343 | return rc; | |
50c2f753 | 3344 | |
1da177e4 LT |
3345 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3346 | name_len = | |
acbbb76a SF |
3347 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3348 | searchName, PATH_MAX, nls_codepage, | |
3349 | remap); | |
1da177e4 LT |
3350 | name_len++; /* trailing null */ |
3351 | name_len *= 2; | |
3352 | pSMB->FileName[name_len] = 0; | |
3353 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3354 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3355 | name_len = strnlen(searchName, PATH_MAX); |
3356 | name_len++; /* trailing null */ | |
3357 | strncpy(pSMB->FileName, searchName, name_len); | |
3358 | } | |
3359 | ||
3360 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3361 | pSMB->TotalDataCount = 0; | |
3362 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3363 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3364 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3365 | pSMB->MaxSetupCount = 0; | |
3366 | pSMB->Reserved = 0; | |
3367 | pSMB->Flags = 0; | |
3368 | pSMB->Timeout = 0; | |
3369 | pSMB->Reserved2 = 0; | |
3370 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3371 | offsetof(struct smb_com_transaction2_qpi_req, |
3372 | InformationLevel) - 4); | |
1da177e4 LT |
3373 | pSMB->DataCount = 0; |
3374 | pSMB->DataOffset = 0; | |
3375 | pSMB->SetupCount = 1; | |
3376 | pSMB->Reserved3 = 0; | |
3377 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3378 | byte_count = params + 1 /* pad */ ; | |
3379 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3380 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3381 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3382 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3383 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3384 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3385 | ||
3386 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3387 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3388 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3389 | if (rc) { |
f96637be | 3390 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3391 | } else { |
3392 | /* decode response */ | |
50c2f753 | 3393 | |
1da177e4 | 3394 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3395 | /* BB also check enough total bytes returned */ |
820a803f | 3396 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3397 | rc = -EIO; /* bad smb */ |
3398 | else { | |
3399 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3400 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3401 | rc = cifs_copy_posix_acl(acl_inf, | |
3402 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3403 | buflen, acl_type, count); |
1da177e4 LT |
3404 | } |
3405 | } | |
3406 | cifs_buf_release(pSMB); | |
3407 | if (rc == -EAGAIN) | |
3408 | goto queryAclRetry; | |
3409 | return rc; | |
3410 | } | |
3411 | ||
3412 | int | |
6d5786a3 | 3413 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3414 | const unsigned char *fileName, |
3415 | const char *local_acl, const int buflen, | |
3416 | const int acl_type, | |
3417 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3418 | { |
3419 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3420 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3421 | char *parm_data; | |
3422 | int name_len; | |
3423 | int rc = 0; | |
3424 | int bytes_returned = 0; | |
3425 | __u16 params, byte_count, data_count, param_offset, offset; | |
3426 | ||
f96637be | 3427 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3428 | setAclRetry: |
3429 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3430 | (void **) &pSMBr); |
1da177e4 LT |
3431 | if (rc) |
3432 | return rc; | |
3433 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3434 | name_len = | |
acbbb76a SF |
3435 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3436 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3437 | name_len++; /* trailing null */ |
3438 | name_len *= 2; | |
50c2f753 | 3439 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3440 | name_len = strnlen(fileName, PATH_MAX); |
3441 | name_len++; /* trailing null */ | |
3442 | strncpy(pSMB->FileName, fileName, name_len); | |
3443 | } | |
3444 | params = 6 + name_len; | |
3445 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3446 | /* BB find max SMB size from sess */ |
3447 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3448 | pSMB->MaxSetupCount = 0; |
3449 | pSMB->Reserved = 0; | |
3450 | pSMB->Flags = 0; | |
3451 | pSMB->Timeout = 0; | |
3452 | pSMB->Reserved2 = 0; | |
3453 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3454 | InformationLevel) - 4; |
1da177e4 LT |
3455 | offset = param_offset + params; |
3456 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3457 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3458 | ||
3459 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3460 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3461 | |
790fe579 | 3462 | if (data_count == 0) { |
1da177e4 LT |
3463 | rc = -EOPNOTSUPP; |
3464 | goto setACLerrorExit; | |
3465 | } | |
3466 | pSMB->DataOffset = cpu_to_le16(offset); | |
3467 | pSMB->SetupCount = 1; | |
3468 | pSMB->Reserved3 = 0; | |
3469 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3470 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3471 | byte_count = 3 /* pad */ + params + data_count; | |
3472 | pSMB->DataCount = cpu_to_le16(data_count); | |
3473 | pSMB->TotalDataCount = pSMB->DataCount; | |
3474 | pSMB->ParameterCount = cpu_to_le16(params); | |
3475 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3476 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3477 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3478 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3479 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3480 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3481 | if (rc) |
f96637be | 3482 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3483 | |
3484 | setACLerrorExit: | |
3485 | cifs_buf_release(pSMB); | |
3486 | if (rc == -EAGAIN) | |
3487 | goto setAclRetry; | |
3488 | return rc; | |
3489 | } | |
3490 | ||
f654bac2 SF |
3491 | /* BB fix tabs in this function FIXME BB */ |
3492 | int | |
6d5786a3 | 3493 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3494 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3495 | { |
50c2f753 SF |
3496 | int rc = 0; |
3497 | struct smb_t2_qfi_req *pSMB = NULL; | |
3498 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3499 | int bytes_returned; | |
3500 | __u16 params, byte_count; | |
f654bac2 | 3501 | |
f96637be | 3502 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3503 | if (tcon == NULL) |
3504 | return -ENODEV; | |
f654bac2 SF |
3505 | |
3506 | GetExtAttrRetry: | |
790fe579 SF |
3507 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3508 | (void **) &pSMBr); | |
3509 | if (rc) | |
3510 | return rc; | |
f654bac2 | 3511 | |
ad7a2926 | 3512 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3513 | pSMB->t2.TotalDataCount = 0; |
3514 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3515 | /* BB find exact max data count below from sess structure BB */ | |
3516 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3517 | pSMB->t2.MaxSetupCount = 0; | |
3518 | pSMB->t2.Reserved = 0; | |
3519 | pSMB->t2.Flags = 0; | |
3520 | pSMB->t2.Timeout = 0; | |
3521 | pSMB->t2.Reserved2 = 0; | |
3522 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3523 | Fid) - 4); | |
3524 | pSMB->t2.DataCount = 0; | |
3525 | pSMB->t2.DataOffset = 0; | |
3526 | pSMB->t2.SetupCount = 1; | |
3527 | pSMB->t2.Reserved3 = 0; | |
3528 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3529 | byte_count = params + 1 /* pad */ ; | |
3530 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3531 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3532 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3533 | pSMB->Pad = 0; | |
f654bac2 | 3534 | pSMB->Fid = netfid; |
be8e3b00 | 3535 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3536 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3537 | ||
3538 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3539 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3540 | if (rc) { | |
f96637be | 3541 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3542 | } else { |
3543 | /* decode response */ | |
3544 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3545 | /* BB also check enough total bytes returned */ |
820a803f | 3546 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3547 | /* If rc should we check for EOPNOSUPP and |
3548 | disable the srvino flag? or in caller? */ | |
3549 | rc = -EIO; /* bad smb */ | |
3550 | else { | |
3551 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3552 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3553 | struct file_chattr_info *pfinfo; | |
3554 | /* BB Do we need a cast or hash here ? */ | |
3555 | if (count != 16) { | |
f96637be | 3556 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3557 | rc = -EIO; |
3558 | goto GetExtAttrOut; | |
3559 | } | |
3560 | pfinfo = (struct file_chattr_info *) | |
3561 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3562 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3563 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3564 | } |
3565 | } | |
f654bac2 | 3566 | GetExtAttrOut: |
790fe579 SF |
3567 | cifs_buf_release(pSMB); |
3568 | if (rc == -EAGAIN) | |
3569 | goto GetExtAttrRetry; | |
3570 | return rc; | |
f654bac2 SF |
3571 | } |
3572 | ||
f654bac2 | 3573 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3574 | |
79df1bae JL |
3575 | #ifdef CONFIG_CIFS_ACL |
3576 | /* | |
3577 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3578 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3579 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3580 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3581 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3582 | * by caller | |
3583 | */ | |
3584 | static int | |
3585 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3586 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3587 | void **ret_buf) |
3588 | { | |
3589 | int rc; | |
3590 | __u32 temp_offset; | |
3591 | struct smb_com_ntransact_req *pSMB; | |
3592 | ||
3593 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3594 | (void **)&pSMB); | |
3595 | if (rc) | |
3596 | return rc; | |
3597 | *ret_buf = (void *)pSMB; | |
3598 | pSMB->Reserved = 0; | |
3599 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3600 | pSMB->TotalDataCount = 0; | |
c974befa | 3601 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3602 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3603 | pSMB->DataCount = pSMB->TotalDataCount; | |
3604 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3605 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3606 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3607 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3608 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3609 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3610 | return 0; | |
3611 | } | |
3612 | ||
3613 | static int | |
3614 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3615 | __u32 *pparmlen, __u32 *pdatalen) | |
3616 | { | |
3617 | char *end_of_smb; | |
3618 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3619 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3620 | u16 bcc; |
79df1bae JL |
3621 | |
3622 | *pdatalen = 0; | |
3623 | *pparmlen = 0; | |
3624 | ||
3625 | if (buf == NULL) | |
3626 | return -EINVAL; | |
3627 | ||
3628 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3629 | ||
820a803f JL |
3630 | bcc = get_bcc(&pSMBr->hdr); |
3631 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3632 | (char *)&pSMBr->ByteCount; |
3633 | ||
3634 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3635 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3636 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3637 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3638 | ||
3639 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3640 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3641 | ||
3642 | /* should we also check that parm and data areas do not overlap? */ | |
3643 | if (*ppparm > end_of_smb) { | |
f96637be | 3644 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3645 | return -EINVAL; |
3646 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3647 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3648 | return -EINVAL; |
3649 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3650 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3651 | return -EINVAL; |
3652 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3653 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3654 | *ppdata, data_count, (data_count + *ppdata), | |
3655 | end_of_smb, pSMBr); | |
79df1bae | 3656 | return -EINVAL; |
820a803f | 3657 | } else if (parm_count + data_count > bcc) { |
f96637be | 3658 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3659 | return -EINVAL; |
3660 | } | |
3661 | *pdatalen = data_count; | |
3662 | *pparmlen = parm_count; | |
3663 | return 0; | |
3664 | } | |
3665 | ||
0a4b92c0 SF |
3666 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3667 | int | |
6d5786a3 | 3668 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3669 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3670 | { |
3671 | int rc = 0; | |
3672 | int buf_type = 0; | |
ad7a2926 | 3673 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3674 | struct kvec iov[1]; |
3675 | ||
f96637be | 3676 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3677 | |
630f3f0c SF |
3678 | *pbuflen = 0; |
3679 | *acl_inf = NULL; | |
3680 | ||
b9c7a2bb | 3681 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3682 | 8 /* parm len */, tcon, (void **) &pSMB); |
3683 | if (rc) | |
3684 | return rc; | |
3685 | ||
3686 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3687 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3688 | pSMB->MaxSetupCount = 0; | |
3689 | pSMB->Fid = fid; /* file handle always le */ | |
3690 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3691 | CIFS_ACL_DACL); | |
3692 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3693 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3694 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3695 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3696 | |
a761ac57 | 3697 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3698 | 0); |
44c58186 | 3699 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3700 | if (rc) { |
f96637be | 3701 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3702 | } else { /* decode response */ |
ad7a2926 | 3703 | __le32 *parm; |
630f3f0c SF |
3704 | __u32 parm_len; |
3705 | __u32 acl_len; | |
50c2f753 | 3706 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3707 | char *pdata; |
0a4b92c0 SF |
3708 | |
3709 | /* validate_nttransact */ | |
50c2f753 | 3710 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3711 | &pdata, &parm_len, pbuflen); |
790fe579 | 3712 | if (rc) |
0a4b92c0 SF |
3713 | goto qsec_out; |
3714 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3715 | ||
f96637be JP |
3716 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3717 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3718 | |
3719 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3720 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3721 | *pbuflen = 0; |
0a4b92c0 SF |
3722 | goto qsec_out; |
3723 | } | |
3724 | ||
3725 | /* BB check that data area is minimum length and as big as acl_len */ | |
3726 | ||
af6f4612 | 3727 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3728 | if (acl_len != *pbuflen) { |
f96637be JP |
3729 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3730 | acl_len, *pbuflen); | |
630f3f0c SF |
3731 | if (*pbuflen > acl_len) |
3732 | *pbuflen = acl_len; | |
3733 | } | |
0a4b92c0 | 3734 | |
630f3f0c SF |
3735 | /* check if buffer is big enough for the acl |
3736 | header followed by the smallest SID */ | |
3737 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3738 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3739 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3740 | rc = -EINVAL; |
3741 | *pbuflen = 0; | |
3742 | } else { | |
f7f7c185 | 3743 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3744 | if (*acl_inf == NULL) { |
3745 | *pbuflen = 0; | |
3746 | rc = -ENOMEM; | |
3747 | } | |
630f3f0c | 3748 | } |
0a4b92c0 SF |
3749 | } |
3750 | qsec_out: | |
790fe579 | 3751 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3752 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3753 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3754 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3755 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3756 | return rc; |
3757 | } | |
97837582 SF |
3758 | |
3759 | int | |
6d5786a3 | 3760 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3761 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3762 | { |
3763 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3764 | int rc = 0; | |
3765 | int bytes_returned = 0; | |
3766 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3767 | void *pSMBr; |
97837582 SF |
3768 | |
3769 | setCifsAclRetry: | |
b2a3ad9c | 3770 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3771 | if (rc) |
b2a3ad9c | 3772 | return rc; |
97837582 SF |
3773 | |
3774 | pSMB->MaxSetupCount = 0; | |
3775 | pSMB->Reserved = 0; | |
3776 | ||
3777 | param_count = 8; | |
3778 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3779 | data_count = acllen; | |
3780 | data_offset = param_offset + param_count; | |
3781 | byte_count = 3 /* pad */ + param_count; | |
3782 | ||
3783 | pSMB->DataCount = cpu_to_le32(data_count); | |
3784 | pSMB->TotalDataCount = pSMB->DataCount; | |
3785 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3786 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3787 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3788 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3789 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3790 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3791 | pSMB->SetupCount = 0; | |
3792 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3793 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3794 | ||
3795 | pSMB->Fid = fid; /* file handle always le */ | |
3796 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3797 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3798 | |
3799 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3800 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3801 | data_offset, pntsd, acllen); | |
be8e3b00 | 3802 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3803 | } else |
be8e3b00 | 3804 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3805 | |
3806 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3807 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3808 | ||
f96637be JP |
3809 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3810 | bytes_returned, rc); | |
97837582 | 3811 | if (rc) |
f96637be | 3812 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3813 | cifs_buf_release(pSMB); |
3814 | ||
3815 | if (rc == -EAGAIN) | |
3816 | goto setCifsAclRetry; | |
3817 | ||
3818 | return (rc); | |
3819 | } | |
3820 | ||
79df1bae | 3821 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3822 | |
6b8edfe0 SF |
3823 | /* Legacy Query Path Information call for lookup to old servers such |
3824 | as Win9x/WinME */ | |
68889f26 PS |
3825 | int |
3826 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3827 | const char *search_name, FILE_ALL_INFO *data, | |
3828 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3829 | { |
ad7a2926 SF |
3830 | QUERY_INFORMATION_REQ *pSMB; |
3831 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3832 | int rc = 0; |
3833 | int bytes_returned; | |
3834 | int name_len; | |
3835 | ||
f96637be | 3836 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3837 | QInfRetry: |
3838 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3839 | (void **) &pSMBr); |
6b8edfe0 SF |
3840 | if (rc) |
3841 | return rc; | |
3842 | ||
3843 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3844 | name_len = | |
acbbb76a | 3845 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3846 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3847 | remap); |
6b8edfe0 SF |
3848 | name_len++; /* trailing null */ |
3849 | name_len *= 2; | |
50c2f753 | 3850 | } else { |
68889f26 | 3851 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3852 | name_len++; /* trailing null */ |
68889f26 | 3853 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3854 | } |
3855 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3856 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3857 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3858 | pSMB->ByteCount = cpu_to_le16(name_len); |
3859 | ||
3860 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3861 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3862 | if (rc) { |
f96637be | 3863 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3864 | } else if (data) { |
1bd5bbcb SF |
3865 | struct timespec ts; |
3866 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3867 | |
3868 | /* decode response */ | |
1bd5bbcb | 3869 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3870 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3871 | ts.tv_nsec = 0; |
3872 | ts.tv_sec = time; | |
3873 | /* decode time fields */ | |
68889f26 PS |
3874 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3875 | data->LastWriteTime = data->ChangeTime; | |
3876 | data->LastAccessTime = 0; | |
3877 | data->AllocationSize = | |
70ca734a | 3878 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3879 | data->EndOfFile = data->AllocationSize; |
3880 | data->Attributes = | |
70ca734a | 3881 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3882 | } else |
3883 | rc = -EIO; /* bad buffer passed in */ | |
3884 | ||
3885 | cifs_buf_release(pSMB); | |
3886 | ||
3887 | if (rc == -EAGAIN) | |
3888 | goto QInfRetry; | |
3889 | ||
3890 | return rc; | |
3891 | } | |
3892 | ||
bcd5357f | 3893 | int |
6d5786a3 | 3894 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3895 | u16 netfid, FILE_ALL_INFO *pFindData) |
3896 | { | |
3897 | struct smb_t2_qfi_req *pSMB = NULL; | |
3898 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3899 | int rc = 0; | |
3900 | int bytes_returned; | |
3901 | __u16 params, byte_count; | |
3902 | ||
3903 | QFileInfoRetry: | |
3904 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3905 | (void **) &pSMBr); | |
3906 | if (rc) | |
3907 | return rc; | |
3908 | ||
3909 | params = 2 /* level */ + 2 /* fid */; | |
3910 | pSMB->t2.TotalDataCount = 0; | |
3911 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3912 | /* BB find exact max data count below from sess structure BB */ | |
3913 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3914 | pSMB->t2.MaxSetupCount = 0; | |
3915 | pSMB->t2.Reserved = 0; | |
3916 | pSMB->t2.Flags = 0; | |
3917 | pSMB->t2.Timeout = 0; | |
3918 | pSMB->t2.Reserved2 = 0; | |
3919 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3920 | Fid) - 4); | |
3921 | pSMB->t2.DataCount = 0; | |
3922 | pSMB->t2.DataOffset = 0; | |
3923 | pSMB->t2.SetupCount = 1; | |
3924 | pSMB->t2.Reserved3 = 0; | |
3925 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3926 | byte_count = params + 1 /* pad */ ; | |
3927 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3928 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3929 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3930 | pSMB->Pad = 0; | |
3931 | pSMB->Fid = netfid; | |
be8e3b00 | 3932 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3933 | |
bcd5357f JL |
3934 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3935 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3936 | if (rc) { | |
f96637be | 3937 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
bcd5357f JL |
3938 | } else { /* decode response */ |
3939 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3940 | |
bcd5357f JL |
3941 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3942 | rc = -EIO; | |
820a803f | 3943 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3944 | rc = -EIO; /* bad smb */ |
3945 | else if (pFindData) { | |
3946 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3947 | memcpy((char *) pFindData, | |
3948 | (char *) &pSMBr->hdr.Protocol + | |
3949 | data_offset, sizeof(FILE_ALL_INFO)); | |
3950 | } else | |
3951 | rc = -ENOMEM; | |
3952 | } | |
3953 | cifs_buf_release(pSMB); | |
3954 | if (rc == -EAGAIN) | |
3955 | goto QFileInfoRetry; | |
6b8edfe0 | 3956 | |
bcd5357f JL |
3957 | return rc; |
3958 | } | |
6b8edfe0 | 3959 | |
1da177e4 | 3960 | int |
6d5786a3 | 3961 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 3962 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 3963 | int legacy /* old style infolevel */, |
737b758c | 3964 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 3965 | { |
68889f26 | 3966 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
3967 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
3968 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3969 | int rc = 0; | |
3970 | int bytes_returned; | |
3971 | int name_len; | |
3972 | __u16 params, byte_count; | |
3973 | ||
f96637be | 3974 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
3975 | QPathInfoRetry: |
3976 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3977 | (void **) &pSMBr); | |
3978 | if (rc) | |
3979 | return rc; | |
3980 | ||
3981 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3982 | name_len = | |
68889f26 | 3983 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 3984 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3985 | name_len++; /* trailing null */ |
3986 | name_len *= 2; | |
50c2f753 | 3987 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 3988 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 3989 | name_len++; /* trailing null */ |
68889f26 | 3990 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
3991 | } |
3992 | ||
50c2f753 | 3993 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3994 | pSMB->TotalDataCount = 0; |
3995 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3996 | /* BB find exact max SMB PDU from sess structure BB */ |
3997 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3998 | pSMB->MaxSetupCount = 0; |
3999 | pSMB->Reserved = 0; | |
4000 | pSMB->Flags = 0; | |
4001 | pSMB->Timeout = 0; | |
4002 | pSMB->Reserved2 = 0; | |
4003 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4004 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4005 | pSMB->DataCount = 0; |
4006 | pSMB->DataOffset = 0; | |
4007 | pSMB->SetupCount = 1; | |
4008 | pSMB->Reserved3 = 0; | |
4009 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4010 | byte_count = params + 1 /* pad */ ; | |
4011 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4012 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4013 | if (legacy) |
acf1a1b1 SF |
4014 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4015 | else | |
4016 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4017 | pSMB->Reserved4 = 0; |
be8e3b00 | 4018 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4019 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4020 | ||
4021 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4022 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4023 | if (rc) { | |
f96637be | 4024 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4025 | } else { /* decode response */ |
4026 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4027 | ||
acf1a1b1 SF |
4028 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4029 | rc = -EIO; | |
820a803f | 4030 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4031 | rc = -EIO; /* bad smb */ |
820a803f | 4032 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4033 | rc = -EIO; /* 24 or 26 expected but we do not read |
4034 | last field */ | |
68889f26 | 4035 | else if (data) { |
acf1a1b1 | 4036 | int size; |
1da177e4 | 4037 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4038 | |
68889f26 PS |
4039 | /* |
4040 | * On legacy responses we do not read the last field, | |
4041 | * EAsize, fortunately since it varies by subdialect and | |
4042 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4043 | * bytes depending but we don't care here. | |
4044 | */ | |
ad7a2926 | 4045 | if (legacy) |
acf1a1b1 SF |
4046 | size = sizeof(FILE_INFO_STANDARD); |
4047 | else | |
4048 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4049 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4050 | data_offset, size); |
1da177e4 LT |
4051 | } else |
4052 | rc = -ENOMEM; | |
4053 | } | |
4054 | cifs_buf_release(pSMB); | |
4055 | if (rc == -EAGAIN) | |
4056 | goto QPathInfoRetry; | |
4057 | ||
4058 | return rc; | |
4059 | } | |
4060 | ||
c8634fd3 | 4061 | int |
6d5786a3 | 4062 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4063 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4064 | { | |
4065 | struct smb_t2_qfi_req *pSMB = NULL; | |
4066 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4067 | int rc = 0; | |
4068 | int bytes_returned; | |
4069 | __u16 params, byte_count; | |
4070 | ||
4071 | UnixQFileInfoRetry: | |
4072 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4073 | (void **) &pSMBr); | |
4074 | if (rc) | |
4075 | return rc; | |
4076 | ||
4077 | params = 2 /* level */ + 2 /* fid */; | |
4078 | pSMB->t2.TotalDataCount = 0; | |
4079 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4080 | /* BB find exact max data count below from sess structure BB */ | |
4081 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4082 | pSMB->t2.MaxSetupCount = 0; | |
4083 | pSMB->t2.Reserved = 0; | |
4084 | pSMB->t2.Flags = 0; | |
4085 | pSMB->t2.Timeout = 0; | |
4086 | pSMB->t2.Reserved2 = 0; | |
4087 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4088 | Fid) - 4); | |
4089 | pSMB->t2.DataCount = 0; | |
4090 | pSMB->t2.DataOffset = 0; | |
4091 | pSMB->t2.SetupCount = 1; | |
4092 | pSMB->t2.Reserved3 = 0; | |
4093 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4094 | byte_count = params + 1 /* pad */ ; | |
4095 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4096 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4097 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4098 | pSMB->Pad = 0; | |
4099 | pSMB->Fid = netfid; | |
be8e3b00 | 4100 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4101 | |
4102 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4103 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4104 | if (rc) { | |
f96637be | 4105 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
c8634fd3 JL |
4106 | } else { /* decode response */ |
4107 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4108 | ||
820a803f | 4109 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4110 | 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 |
4111 | rc = -EIO; /* bad smb */ |
4112 | } else { | |
4113 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4114 | memcpy((char *) pFindData, | |
4115 | (char *) &pSMBr->hdr.Protocol + | |
4116 | data_offset, | |
4117 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4118 | } | |
4119 | } | |
4120 | ||
4121 | cifs_buf_release(pSMB); | |
4122 | if (rc == -EAGAIN) | |
4123 | goto UnixQFileInfoRetry; | |
4124 | ||
4125 | return rc; | |
4126 | } | |
4127 | ||
1da177e4 | 4128 | int |
6d5786a3 | 4129 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4130 | const unsigned char *searchName, |
582d21e5 | 4131 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4132 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4133 | { |
4134 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4135 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4136 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4137 | int rc = 0; | |
4138 | int bytes_returned = 0; | |
4139 | int name_len; | |
4140 | __u16 params, byte_count; | |
4141 | ||
f96637be | 4142 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4143 | UnixQPathInfoRetry: |
4144 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4145 | (void **) &pSMBr); | |
4146 | if (rc) | |
4147 | return rc; | |
4148 | ||
4149 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4150 | name_len = | |
acbbb76a SF |
4151 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4152 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4153 | name_len++; /* trailing null */ |
4154 | name_len *= 2; | |
50c2f753 | 4155 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4156 | name_len = strnlen(searchName, PATH_MAX); |
4157 | name_len++; /* trailing null */ | |
4158 | strncpy(pSMB->FileName, searchName, name_len); | |
4159 | } | |
4160 | ||
50c2f753 | 4161 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4162 | pSMB->TotalDataCount = 0; |
4163 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4164 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4165 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4166 | pSMB->MaxSetupCount = 0; |
4167 | pSMB->Reserved = 0; | |
4168 | pSMB->Flags = 0; | |
4169 | pSMB->Timeout = 0; | |
4170 | pSMB->Reserved2 = 0; | |
4171 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4172 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4173 | pSMB->DataCount = 0; |
4174 | pSMB->DataOffset = 0; | |
4175 | pSMB->SetupCount = 1; | |
4176 | pSMB->Reserved3 = 0; | |
4177 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4178 | byte_count = params + 1 /* pad */ ; | |
4179 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4180 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4181 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4182 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4183 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4184 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4185 | ||
4186 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4187 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4188 | if (rc) { | |
f96637be | 4189 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4190 | } else { /* decode response */ |
4191 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4192 | ||
820a803f | 4193 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4194 | 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 |
4195 | rc = -EIO; /* bad smb */ |
4196 | } else { | |
4197 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4198 | memcpy((char *) pFindData, | |
4199 | (char *) &pSMBr->hdr.Protocol + | |
4200 | data_offset, | |
630f3f0c | 4201 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4202 | } |
4203 | } | |
4204 | cifs_buf_release(pSMB); | |
4205 | if (rc == -EAGAIN) | |
4206 | goto UnixQPathInfoRetry; | |
4207 | ||
4208 | return rc; | |
4209 | } | |
4210 | ||
1da177e4 LT |
4211 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4212 | int | |
6d5786a3 | 4213 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4214 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4215 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4216 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4217 | { |
4218 | /* level 257 SMB_ */ | |
4219 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4220 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4221 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4222 | int rc = 0; |
4223 | int bytes_returned = 0; | |
c052e2b4 | 4224 | int name_len, remap; |
1da177e4 | 4225 | __u16 params, byte_count; |
c052e2b4 | 4226 | struct nls_table *nls_codepage; |
1da177e4 | 4227 | |
f96637be | 4228 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4229 | |
4230 | findFirstRetry: | |
4231 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4232 | (void **) &pSMBr); | |
4233 | if (rc) | |
4234 | return rc; | |
4235 | ||
c052e2b4 SP |
4236 | nls_codepage = cifs_sb->local_nls; |
4237 | remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; | |
4238 | ||
1da177e4 LT |
4239 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4240 | name_len = | |
acbbb76a SF |
4241 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4242 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4243 | /* We can not add the asterik earlier in case |
4244 | it got remapped to 0xF03A as if it were part of the | |
4245 | directory name instead of a wildcard */ | |
1da177e4 | 4246 | name_len *= 2; |
c052e2b4 SP |
4247 | if (msearch) { |
4248 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4249 | pSMB->FileName[name_len+1] = 0; | |
4250 | pSMB->FileName[name_len+2] = '*'; | |
4251 | pSMB->FileName[name_len+3] = 0; | |
4252 | name_len += 4; /* now the trailing null */ | |
4253 | /* null terminate just in case */ | |
4254 | pSMB->FileName[name_len] = 0; | |
4255 | pSMB->FileName[name_len+1] = 0; | |
4256 | name_len += 2; | |
4257 | } | |
1da177e4 LT |
4258 | } else { /* BB add check for overrun of SMB buf BB */ |
4259 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4260 | /* BB fix here and in unicode clause above ie |
790fe579 | 4261 | if (name_len > buffersize-header) |
1da177e4 LT |
4262 | free buffer exit; BB */ |
4263 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4264 | if (msearch) { |
4265 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4266 | pSMB->FileName[name_len+1] = '*'; | |
4267 | pSMB->FileName[name_len+2] = 0; | |
4268 | name_len += 3; | |
4269 | } | |
1da177e4 LT |
4270 | } |
4271 | ||
4272 | params = 12 + name_len /* includes null */ ; | |
4273 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4274 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4275 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4276 | pSMB->MaxSetupCount = 0; |
4277 | pSMB->Reserved = 0; | |
4278 | pSMB->Flags = 0; | |
4279 | pSMB->Timeout = 0; | |
4280 | pSMB->Reserved2 = 0; | |
4281 | byte_count = params + 1 /* pad */ ; | |
4282 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4283 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4284 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4285 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4286 | - 4); | |
1da177e4 LT |
4287 | pSMB->DataCount = 0; |
4288 | pSMB->DataOffset = 0; | |
4289 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4290 | pSMB->Reserved3 = 0; | |
4291 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4292 | pSMB->SearchAttributes = | |
4293 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4294 | ATTR_DIRECTORY); | |
50c2f753 | 4295 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4296 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4297 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4298 | ||
4299 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4300 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4301 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4302 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4303 | ||
4304 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4305 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4306 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4307 | |
88274815 SF |
4308 | if (rc) {/* BB add logic to retry regular search if Unix search |
4309 | rejected unexpectedly by server */ | |
1da177e4 | 4310 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4311 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4312 | |
88274815 | 4313 | cifs_buf_release(pSMB); |
1da177e4 LT |
4314 | |
4315 | /* BB eventually could optimize out free and realloc of buf */ | |
4316 | /* for this case */ | |
4317 | if (rc == -EAGAIN) | |
4318 | goto findFirstRetry; | |
4319 | } else { /* decode response */ | |
4320 | /* BB remember to free buffer if error BB */ | |
4321 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4322 | if (rc == 0) { |
b77d753c SF |
4323 | unsigned int lnoff; |
4324 | ||
1da177e4 | 4325 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4326 | psrch_inf->unicode = true; |
1da177e4 | 4327 | else |
4b18f2a9 | 4328 | psrch_inf->unicode = false; |
1da177e4 LT |
4329 | |
4330 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4331 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4332 | psrch_inf->srch_entries_start = |
4333 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4334 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4335 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4336 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4337 | ||
790fe579 | 4338 | if (parms->EndofSearch) |
4b18f2a9 | 4339 | psrch_inf->endOfSearch = true; |
1da177e4 | 4340 | else |
4b18f2a9 | 4341 | psrch_inf->endOfSearch = false; |
1da177e4 | 4342 | |
50c2f753 SF |
4343 | psrch_inf->entries_in_buffer = |
4344 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4345 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4346 | psrch_inf->entries_in_buffer; |
b77d753c | 4347 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4348 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4349 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4350 | psrch_inf->last_entry = NULL; |
4351 | return rc; | |
4352 | } | |
4353 | ||
0752f152 | 4354 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4355 | lnoff; |
4356 | ||
c052e2b4 SP |
4357 | if (pnetfid) |
4358 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4359 | } else { |
4360 | cifs_buf_release(pSMB); | |
4361 | } | |
4362 | } | |
4363 | ||
4364 | return rc; | |
4365 | } | |
4366 | ||
6d5786a3 PS |
4367 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4368 | __u16 searchHandle, __u16 search_flags, | |
4369 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4370 | { |
4371 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4372 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4373 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4374 | char *response_data; |
4375 | int rc = 0; | |
9438fabb JL |
4376 | int bytes_returned; |
4377 | unsigned int name_len; | |
1da177e4 LT |
4378 | __u16 params, byte_count; |
4379 | ||
f96637be | 4380 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4381 | |
4b18f2a9 | 4382 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4383 | return -ENOENT; |
4384 | ||
4385 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4386 | (void **) &pSMBr); | |
4387 | if (rc) | |
4388 | return rc; | |
4389 | ||
50c2f753 | 4390 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4391 | byte_count = 0; |
4392 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4393 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4394 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4395 | pSMB->MaxSetupCount = 0; |
4396 | pSMB->Reserved = 0; | |
4397 | pSMB->Flags = 0; | |
4398 | pSMB->Timeout = 0; | |
4399 | pSMB->Reserved2 = 0; | |
4400 | pSMB->ParameterOffset = cpu_to_le16( | |
4401 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4402 | pSMB->DataCount = 0; | |
4403 | pSMB->DataOffset = 0; | |
4404 | pSMB->SetupCount = 1; | |
4405 | pSMB->Reserved3 = 0; | |
4406 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4407 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4408 | pSMB->SearchCount = | |
630f3f0c | 4409 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4410 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4411 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4412 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4413 | |
4414 | name_len = psrch_inf->resume_name_len; | |
4415 | params += name_len; | |
790fe579 | 4416 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4417 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4418 | byte_count += name_len; | |
ef6724e3 SF |
4419 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4420 | pSMB->ResumeFileName[name_len] = 0; | |
4421 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4422 | } else { |
4423 | rc = -EINVAL; | |
4424 | goto FNext2_err_exit; | |
4425 | } | |
4426 | byte_count = params + 1 /* pad */ ; | |
4427 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4428 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4429 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4430 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4431 | |
1da177e4 LT |
4432 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4433 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4434 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4435 | if (rc) { |
4436 | if (rc == -EBADF) { | |
4b18f2a9 | 4437 | psrch_inf->endOfSearch = true; |
6353450a | 4438 | cifs_buf_release(pSMB); |
50c2f753 | 4439 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4440 | } else |
f96637be | 4441 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4442 | } else { /* decode response */ |
4443 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4444 | |
790fe579 | 4445 | if (rc == 0) { |
b77d753c SF |
4446 | unsigned int lnoff; |
4447 | ||
1da177e4 LT |
4448 | /* BB fixme add lock for file (srch_info) struct here */ |
4449 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4450 | psrch_inf->unicode = true; |
1da177e4 | 4451 | else |
4b18f2a9 | 4452 | psrch_inf->unicode = false; |
1da177e4 LT |
4453 | response_data = (char *) &pSMBr->hdr.Protocol + |
4454 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4455 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4456 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4457 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4458 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4459 | cifs_small_buf_release( |
4460 | psrch_inf->ntwrk_buf_start); | |
4461 | else | |
4462 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4463 | psrch_inf->srch_entries_start = response_data; |
4464 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4465 | psrch_inf->smallBuf = 0; |
790fe579 | 4466 | if (parms->EndofSearch) |
4b18f2a9 | 4467 | psrch_inf->endOfSearch = true; |
1da177e4 | 4468 | else |
4b18f2a9 | 4469 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4470 | psrch_inf->entries_in_buffer = |
4471 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4472 | psrch_inf->index_of_last_entry += |
4473 | psrch_inf->entries_in_buffer; | |
b77d753c | 4474 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4475 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4476 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4477 | psrch_inf->last_entry = NULL; |
4478 | return rc; | |
4479 | } else | |
4480 | psrch_inf->last_entry = | |
4481 | psrch_inf->srch_entries_start + lnoff; | |
4482 | ||
f96637be JP |
4483 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4484 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4485 | |
4486 | /* BB fixme add unlock here */ | |
4487 | } | |
4488 | ||
4489 | } | |
4490 | ||
4491 | /* BB On error, should we leave previous search buf (and count and | |
4492 | last entry fields) intact or free the previous one? */ | |
4493 | ||
4494 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4495 | since file handle passed in no longer valid */ | |
4496 | FNext2_err_exit: | |
4497 | if (rc != 0) | |
4498 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4499 | return rc; |
4500 | } | |
4501 | ||
4502 | int | |
6d5786a3 | 4503 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4504 | const __u16 searchHandle) |
1da177e4 LT |
4505 | { |
4506 | int rc = 0; | |
4507 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4508 | |
f96637be | 4509 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4510 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4511 | ||
4512 | /* no sense returning error if session restarted | |
4513 | as file handle has been closed */ | |
790fe579 | 4514 | if (rc == -EAGAIN) |
1da177e4 LT |
4515 | return 0; |
4516 | if (rc) | |
4517 | return rc; | |
4518 | ||
1da177e4 LT |
4519 | pSMB->FileID = searchHandle; |
4520 | pSMB->ByteCount = 0; | |
792af7b0 | 4521 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4522 | if (rc) |
f96637be | 4523 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4524 | |
44c58186 | 4525 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4526 | |
4527 | /* Since session is dead, search handle closed on server already */ | |
4528 | if (rc == -EAGAIN) | |
4529 | rc = 0; | |
4530 | ||
4531 | return rc; | |
4532 | } | |
4533 | ||
1da177e4 | 4534 | int |
6d5786a3 | 4535 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4536 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4537 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4538 | { |
4539 | int rc = 0; | |
4540 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4541 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4542 | int name_len, bytes_returned; | |
4543 | __u16 params, byte_count; | |
4544 | ||
f96637be | 4545 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4546 | if (tcon == NULL) |
50c2f753 | 4547 | return -ENODEV; |
1da177e4 LT |
4548 | |
4549 | GetInodeNumberRetry: | |
4550 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4551 | (void **) &pSMBr); |
1da177e4 LT |
4552 | if (rc) |
4553 | return rc; | |
4554 | ||
1da177e4 LT |
4555 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4556 | name_len = | |
acbbb76a | 4557 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4558 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4559 | remap); |
1da177e4 LT |
4560 | name_len++; /* trailing null */ |
4561 | name_len *= 2; | |
50c2f753 | 4562 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4563 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4564 | name_len++; /* trailing null */ |
1208ef1f | 4565 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4566 | } |
4567 | ||
4568 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4569 | pSMB->TotalDataCount = 0; | |
4570 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4571 | /* BB find exact max data count below from sess structure BB */ | |
4572 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4573 | pSMB->MaxSetupCount = 0; | |
4574 | pSMB->Reserved = 0; | |
4575 | pSMB->Flags = 0; | |
4576 | pSMB->Timeout = 0; | |
4577 | pSMB->Reserved2 = 0; | |
4578 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4579 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4580 | pSMB->DataCount = 0; |
4581 | pSMB->DataOffset = 0; | |
4582 | pSMB->SetupCount = 1; | |
4583 | pSMB->Reserved3 = 0; | |
4584 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4585 | byte_count = params + 1 /* pad */ ; | |
4586 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4587 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4588 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4589 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4590 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4591 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4592 | ||
4593 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4594 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4595 | if (rc) { | |
f96637be | 4596 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4597 | } else { |
4598 | /* decode response */ | |
4599 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4600 | /* BB also check enough total bytes returned */ |
820a803f | 4601 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4602 | /* If rc should we check for EOPNOSUPP and |
4603 | disable the srvino flag? or in caller? */ | |
4604 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4605 | else { |
1da177e4 LT |
4606 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4607 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4608 | struct file_internal_info *pfinfo; |
1da177e4 | 4609 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4610 | if (count < 8) { |
f96637be | 4611 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4612 | rc = -EIO; |
4613 | goto GetInodeNumOut; | |
4614 | } | |
4615 | pfinfo = (struct file_internal_info *) | |
4616 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4617 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4618 | } |
4619 | } | |
4620 | GetInodeNumOut: | |
4621 | cifs_buf_release(pSMB); | |
4622 | if (rc == -EAGAIN) | |
4623 | goto GetInodeNumberRetry; | |
4624 | return rc; | |
4625 | } | |
1da177e4 | 4626 | |
fec4585f IM |
4627 | /* parses DFS refferal V3 structure |
4628 | * caller is responsible for freeing target_nodes | |
4629 | * returns: | |
4630 | * on success - 0 | |
4631 | * on failure - errno | |
4632 | */ | |
4633 | static int | |
a1fe78f1 | 4634 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4635 | unsigned int *num_of_nodes, |
4636 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4637 | const struct nls_table *nls_codepage, int remap, |
4638 | const char *searchName) | |
fec4585f IM |
4639 | { |
4640 | int i, rc = 0; | |
4641 | char *data_end; | |
4642 | bool is_unicode; | |
4643 | struct dfs_referral_level_3 *ref; | |
4644 | ||
5ca33c6a HH |
4645 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4646 | is_unicode = true; | |
4647 | else | |
4648 | is_unicode = false; | |
fec4585f IM |
4649 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4650 | ||
4651 | if (*num_of_nodes < 1) { | |
f96637be JP |
4652 | cifs_dbg(VFS, "num_referrals: must be at least > 0, but we get num_referrals = %d\n", |
4653 | *num_of_nodes); | |
fec4585f | 4654 | rc = -EINVAL; |
a1fe78f1 | 4655 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4656 | } |
4657 | ||
4658 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4659 | if (ref->VersionNumber != cpu_to_le16(3)) { |
f96637be JP |
4660 | cifs_dbg(VFS, "Referrals of V%d version are not supported, should be V3\n", |
4661 | le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4662 | rc = -EINVAL; |
a1fe78f1 | 4663 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4664 | } |
4665 | ||
4666 | /* get the upper boundary of the resp buffer */ | |
4667 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4668 | le16_to_cpu(pSMBr->t2.DataCount); | |
4669 | ||
f96637be JP |
4670 | cifs_dbg(FYI, "num_referrals: %d dfs flags: 0x%x ...\n", |
4671 | *num_of_nodes, le32_to_cpu(pSMBr->DFSFlags)); | |
fec4585f | 4672 | |
f96637be JP |
4673 | *target_nodes = kcalloc(*num_of_nodes, sizeof(struct dfs_info3_param), |
4674 | GFP_KERNEL); | |
fec4585f | 4675 | if (*target_nodes == NULL) { |
fec4585f | 4676 | rc = -ENOMEM; |
a1fe78f1 | 4677 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4678 | } |
4679 | ||
3ad2f3fb | 4680 | /* collect necessary data from referrals */ |
fec4585f IM |
4681 | for (i = 0; i < *num_of_nodes; i++) { |
4682 | char *temp; | |
4683 | int max_len; | |
4684 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4685 | ||
0e0d2cf3 | 4686 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4687 | if (is_unicode) { |
331c3135 JL |
4688 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4689 | GFP_KERNEL); | |
2920ee2b SF |
4690 | if (tmp == NULL) { |
4691 | rc = -ENOMEM; | |
4692 | goto parse_DFS_referrals_exit; | |
4693 | } | |
acbbb76a SF |
4694 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4695 | PATH_MAX, nls_codepage, remap); | |
4696 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4697 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4698 | nls_codepage); |
4699 | kfree(tmp); | |
4700 | } else | |
4701 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4702 | ||
fec4585f IM |
4703 | node->server_type = le16_to_cpu(ref->ServerType); |
4704 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4705 | ||
4706 | /* copy DfsPath */ | |
4707 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4708 | max_len = data_end - temp; | |
acbbb76a SF |
4709 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4710 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4711 | if (!node->path_name) { |
4712 | rc = -ENOMEM; | |
a1fe78f1 | 4713 | goto parse_DFS_referrals_exit; |
066ce689 | 4714 | } |
fec4585f IM |
4715 | |
4716 | /* copy link target UNC */ | |
4717 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4718 | max_len = data_end - temp; | |
acbbb76a SF |
4719 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4720 | is_unicode, nls_codepage); | |
d8f2799b | 4721 | if (!node->node_name) { |
d8e2f53a | 4722 | rc = -ENOMEM; |
d8f2799b SM |
4723 | goto parse_DFS_referrals_exit; |
4724 | } | |
4725 | ||
4726 | ref++; | |
fec4585f IM |
4727 | } |
4728 | ||
a1fe78f1 | 4729 | parse_DFS_referrals_exit: |
fec4585f IM |
4730 | if (rc) { |
4731 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4732 | *target_nodes = NULL; | |
4733 | *num_of_nodes = 0; | |
4734 | } | |
4735 | return rc; | |
4736 | } | |
4737 | ||
1da177e4 | 4738 | int |
6d5786a3 | 4739 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4740 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4741 | unsigned int *num_of_nodes, |
737b758c | 4742 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4743 | { |
4744 | /* TRANS2_GET_DFS_REFERRAL */ | |
4745 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4746 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4747 | int rc = 0; |
4748 | int bytes_returned; | |
4749 | int name_len; | |
1da177e4 | 4750 | __u16 params, byte_count; |
c2cf07d5 SF |
4751 | *num_of_nodes = 0; |
4752 | *target_nodes = NULL; | |
1da177e4 | 4753 | |
f96637be | 4754 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4755 | if (ses == NULL) |
4756 | return -ENODEV; | |
4757 | getDFSRetry: | |
4758 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4759 | (void **) &pSMBr); | |
4760 | if (rc) | |
4761 | return rc; | |
50c2f753 SF |
4762 | |
4763 | /* server pointer checked in called function, | |
1982c344 | 4764 | but should never be null here anyway */ |
88257360 | 4765 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4766 | pSMB->hdr.Tid = ses->ipc_tid; |
4767 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4768 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4769 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4770 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4771 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4772 | |
4773 | if (ses->capabilities & CAP_UNICODE) { | |
4774 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4775 | name_len = | |
acbbb76a | 4776 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4777 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4778 | remap); |
1da177e4 LT |
4779 | name_len++; /* trailing null */ |
4780 | name_len *= 2; | |
50c2f753 | 4781 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4782 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4783 | name_len++; /* trailing null */ |
b669f33c | 4784 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4785 | } |
4786 | ||
38d77c50 JL |
4787 | if (ses->server && ses->server->sign) |
4788 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1a4e15a0 | 4789 | |
50c2f753 | 4790 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4791 | |
1da177e4 LT |
4792 | params = 2 /* level */ + name_len /*includes null */ ; |
4793 | pSMB->TotalDataCount = 0; | |
4794 | pSMB->DataCount = 0; | |
4795 | pSMB->DataOffset = 0; | |
4796 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4797 | /* BB find exact max SMB PDU from sess structure BB */ |
4798 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4799 | pSMB->MaxSetupCount = 0; |
4800 | pSMB->Reserved = 0; | |
4801 | pSMB->Flags = 0; | |
4802 | pSMB->Timeout = 0; | |
4803 | pSMB->Reserved2 = 0; | |
4804 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4805 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4806 | pSMB->SetupCount = 1; |
4807 | pSMB->Reserved3 = 0; | |
4808 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4809 | byte_count = params + 3 /* pad */ ; | |
4810 | pSMB->ParameterCount = cpu_to_le16(params); | |
4811 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4812 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4813 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4814 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4815 | ||
4816 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4817 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4818 | if (rc) { | |
f96637be | 4819 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4820 | goto GetDFSRefExit; |
4821 | } | |
4822 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4823 | |
c2cf07d5 | 4824 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4825 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4826 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4827 | goto GetDFSRefExit; |
4828 | } | |
c2cf07d5 | 4829 | |
f96637be JP |
4830 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4831 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4832 | |
fec4585f | 4833 | /* parse returned result into more usable form */ |
a1fe78f1 | 4834 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4835 | target_nodes, nls_codepage, remap, |
b669f33c | 4836 | search_name); |
c2cf07d5 | 4837 | |
1da177e4 | 4838 | GetDFSRefExit: |
0d817bc0 | 4839 | cifs_buf_release(pSMB); |
1da177e4 LT |
4840 | |
4841 | if (rc == -EAGAIN) | |
4842 | goto getDFSRetry; | |
4843 | ||
4844 | return rc; | |
4845 | } | |
4846 | ||
20962438 SF |
4847 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4848 | int | |
6d5786a3 PS |
4849 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4850 | struct kstatfs *FSData) | |
20962438 SF |
4851 | { |
4852 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4853 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4854 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4855 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4856 | int rc = 0; | |
4857 | int bytes_returned = 0; | |
4858 | __u16 params, byte_count; | |
4859 | ||
f96637be | 4860 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4861 | oldQFSInfoRetry: |
4862 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4863 | (void **) &pSMBr); | |
4864 | if (rc) | |
4865 | return rc; | |
20962438 SF |
4866 | |
4867 | params = 2; /* level */ | |
4868 | pSMB->TotalDataCount = 0; | |
4869 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4870 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4871 | pSMB->MaxSetupCount = 0; | |
4872 | pSMB->Reserved = 0; | |
4873 | pSMB->Flags = 0; | |
4874 | pSMB->Timeout = 0; | |
4875 | pSMB->Reserved2 = 0; | |
4876 | byte_count = params + 1 /* pad */ ; | |
4877 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4878 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4879 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4880 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4881 | pSMB->DataCount = 0; | |
4882 | pSMB->DataOffset = 0; | |
4883 | pSMB->SetupCount = 1; | |
4884 | pSMB->Reserved3 = 0; | |
4885 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4886 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4887 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4888 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4889 | ||
4890 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4891 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4892 | if (rc) { | |
f96637be | 4893 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4894 | } else { /* decode response */ |
4895 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4896 | ||
820a803f | 4897 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4898 | rc = -EIO; /* bad smb */ |
4899 | else { | |
4900 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4901 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4902 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4903 | |
50c2f753 | 4904 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4905 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4906 | FSData->f_bsize = | |
4907 | le16_to_cpu(response_data->BytesPerSector) * | |
4908 | le32_to_cpu(response_data-> | |
4909 | SectorsPerAllocationUnit); | |
4910 | FSData->f_blocks = | |
50c2f753 | 4911 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4912 | FSData->f_bfree = FSData->f_bavail = |
4913 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4914 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4915 | (unsigned long long)FSData->f_blocks, | |
4916 | (unsigned long long)FSData->f_bfree, | |
4917 | FSData->f_bsize); | |
20962438 SF |
4918 | } |
4919 | } | |
4920 | cifs_buf_release(pSMB); | |
4921 | ||
4922 | if (rc == -EAGAIN) | |
4923 | goto oldQFSInfoRetry; | |
4924 | ||
4925 | return rc; | |
4926 | } | |
4927 | ||
1da177e4 | 4928 | int |
6d5786a3 PS |
4929 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4930 | struct kstatfs *FSData) | |
1da177e4 LT |
4931 | { |
4932 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4933 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4934 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4935 | FILE_SYSTEM_INFO *response_data; | |
4936 | int rc = 0; | |
4937 | int bytes_returned = 0; | |
4938 | __u16 params, byte_count; | |
4939 | ||
f96637be | 4940 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4941 | QFSInfoRetry: |
4942 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4943 | (void **) &pSMBr); | |
4944 | if (rc) | |
4945 | return rc; | |
4946 | ||
4947 | params = 2; /* level */ | |
4948 | pSMB->TotalDataCount = 0; | |
4949 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4950 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4951 | pSMB->MaxSetupCount = 0; |
4952 | pSMB->Reserved = 0; | |
4953 | pSMB->Flags = 0; | |
4954 | pSMB->Timeout = 0; | |
4955 | pSMB->Reserved2 = 0; | |
4956 | byte_count = params + 1 /* pad */ ; | |
4957 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4958 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4959 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4960 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4961 | pSMB->DataCount = 0; |
4962 | pSMB->DataOffset = 0; | |
4963 | pSMB->SetupCount = 1; | |
4964 | pSMB->Reserved3 = 0; | |
4965 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4966 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4967 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4968 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4969 | ||
4970 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4971 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4972 | if (rc) { | |
f96637be | 4973 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 4974 | } else { /* decode response */ |
50c2f753 | 4975 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4976 | |
820a803f | 4977 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4978 | rc = -EIO; /* bad smb */ |
4979 | else { | |
4980 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4981 | |
4982 | response_data = | |
4983 | (FILE_SYSTEM_INFO | |
4984 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4985 | data_offset); | |
4986 | FSData->f_bsize = | |
4987 | le32_to_cpu(response_data->BytesPerSector) * | |
4988 | le32_to_cpu(response_data-> | |
4989 | SectorsPerAllocationUnit); | |
4990 | FSData->f_blocks = | |
4991 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4992 | FSData->f_bfree = FSData->f_bavail = | |
4993 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4994 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4995 | (unsigned long long)FSData->f_blocks, | |
4996 | (unsigned long long)FSData->f_bfree, | |
4997 | FSData->f_bsize); | |
1da177e4 LT |
4998 | } |
4999 | } | |
5000 | cifs_buf_release(pSMB); | |
5001 | ||
5002 | if (rc == -EAGAIN) | |
5003 | goto QFSInfoRetry; | |
5004 | ||
5005 | return rc; | |
5006 | } | |
5007 | ||
5008 | int | |
6d5786a3 | 5009 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5010 | { |
5011 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5012 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5013 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5014 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5015 | int rc = 0; | |
5016 | int bytes_returned = 0; | |
5017 | __u16 params, byte_count; | |
5018 | ||
f96637be | 5019 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5020 | QFSAttributeRetry: |
5021 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5022 | (void **) &pSMBr); | |
5023 | if (rc) | |
5024 | return rc; | |
5025 | ||
5026 | params = 2; /* level */ | |
5027 | pSMB->TotalDataCount = 0; | |
5028 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5029 | /* BB find exact max SMB PDU from sess structure BB */ |
5030 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5031 | pSMB->MaxSetupCount = 0; |
5032 | pSMB->Reserved = 0; | |
5033 | pSMB->Flags = 0; | |
5034 | pSMB->Timeout = 0; | |
5035 | pSMB->Reserved2 = 0; | |
5036 | byte_count = params + 1 /* pad */ ; | |
5037 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5038 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5039 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5040 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5041 | pSMB->DataCount = 0; |
5042 | pSMB->DataOffset = 0; | |
5043 | pSMB->SetupCount = 1; | |
5044 | pSMB->Reserved3 = 0; | |
5045 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5046 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5047 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5048 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5049 | ||
5050 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5051 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5052 | if (rc) { | |
f96637be | 5053 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5054 | } else { /* decode response */ |
5055 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5056 | ||
820a803f | 5057 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5058 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5059 | rc = -EIO; /* bad smb */ |
5060 | } else { | |
5061 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5062 | response_data = | |
5063 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5064 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5065 | data_offset); | |
5066 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5067 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5068 | } |
5069 | } | |
5070 | cifs_buf_release(pSMB); | |
5071 | ||
5072 | if (rc == -EAGAIN) | |
5073 | goto QFSAttributeRetry; | |
5074 | ||
5075 | return rc; | |
5076 | } | |
5077 | ||
5078 | int | |
6d5786a3 | 5079 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5080 | { |
5081 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5082 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5083 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5084 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5085 | int rc = 0; | |
5086 | int bytes_returned = 0; | |
5087 | __u16 params, byte_count; | |
5088 | ||
f96637be | 5089 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5090 | QFSDeviceRetry: |
5091 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5092 | (void **) &pSMBr); | |
5093 | if (rc) | |
5094 | return rc; | |
5095 | ||
5096 | params = 2; /* level */ | |
5097 | pSMB->TotalDataCount = 0; | |
5098 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5099 | /* BB find exact max SMB PDU from sess structure BB */ |
5100 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5101 | pSMB->MaxSetupCount = 0; |
5102 | pSMB->Reserved = 0; | |
5103 | pSMB->Flags = 0; | |
5104 | pSMB->Timeout = 0; | |
5105 | pSMB->Reserved2 = 0; | |
5106 | byte_count = params + 1 /* pad */ ; | |
5107 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5108 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5109 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5110 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5111 | |
5112 | pSMB->DataCount = 0; | |
5113 | pSMB->DataOffset = 0; | |
5114 | pSMB->SetupCount = 1; | |
5115 | pSMB->Reserved3 = 0; | |
5116 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5117 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5118 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5119 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5120 | ||
5121 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5122 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5123 | if (rc) { | |
f96637be | 5124 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5125 | } else { /* decode response */ |
5126 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5127 | ||
820a803f JL |
5128 | if (rc || get_bcc(&pSMBr->hdr) < |
5129 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5130 | rc = -EIO; /* bad smb */ |
5131 | else { | |
5132 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5133 | response_data = | |
737b758c SF |
5134 | (FILE_SYSTEM_DEVICE_INFO *) |
5135 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5136 | data_offset); |
5137 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5138 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5139 | } |
5140 | } | |
5141 | cifs_buf_release(pSMB); | |
5142 | ||
5143 | if (rc == -EAGAIN) | |
5144 | goto QFSDeviceRetry; | |
5145 | ||
5146 | return rc; | |
5147 | } | |
5148 | ||
5149 | int | |
6d5786a3 | 5150 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5151 | { |
5152 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5153 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5154 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5155 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5156 | int rc = 0; | |
5157 | int bytes_returned = 0; | |
5158 | __u16 params, byte_count; | |
5159 | ||
f96637be | 5160 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5161 | QFSUnixRetry: |
f569599a JL |
5162 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5163 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5164 | if (rc) |
5165 | return rc; | |
5166 | ||
5167 | params = 2; /* level */ | |
5168 | pSMB->TotalDataCount = 0; | |
5169 | pSMB->DataCount = 0; | |
5170 | pSMB->DataOffset = 0; | |
5171 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5172 | /* BB find exact max SMB PDU from sess structure BB */ |
5173 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5174 | pSMB->MaxSetupCount = 0; |
5175 | pSMB->Reserved = 0; | |
5176 | pSMB->Flags = 0; | |
5177 | pSMB->Timeout = 0; | |
5178 | pSMB->Reserved2 = 0; | |
5179 | byte_count = params + 1 /* pad */ ; | |
5180 | pSMB->ParameterCount = cpu_to_le16(params); | |
5181 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5182 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5183 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5184 | pSMB->SetupCount = 1; |
5185 | pSMB->Reserved3 = 0; | |
5186 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5187 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5188 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5189 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5190 | ||
5191 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5192 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5193 | if (rc) { | |
f96637be | 5194 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5195 | } else { /* decode response */ |
5196 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5197 | ||
820a803f | 5198 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5199 | rc = -EIO; /* bad smb */ |
5200 | } else { | |
5201 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5202 | response_data = | |
5203 | (FILE_SYSTEM_UNIX_INFO | |
5204 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5205 | data_offset); | |
5206 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5207 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5208 | } |
5209 | } | |
5210 | cifs_buf_release(pSMB); | |
5211 | ||
5212 | if (rc == -EAGAIN) | |
5213 | goto QFSUnixRetry; | |
5214 | ||
5215 | ||
5216 | return rc; | |
5217 | } | |
5218 | ||
ac67055e | 5219 | int |
6d5786a3 | 5220 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5221 | { |
5222 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5223 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5224 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5225 | int rc = 0; | |
5226 | int bytes_returned = 0; | |
5227 | __u16 params, param_offset, offset, byte_count; | |
5228 | ||
f96637be | 5229 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5230 | SETFSUnixRetry: |
f26282c9 | 5231 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5232 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5233 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5234 | if (rc) |
5235 | return rc; | |
5236 | ||
5237 | params = 4; /* 2 bytes zero followed by info level. */ | |
5238 | pSMB->MaxSetupCount = 0; | |
5239 | pSMB->Reserved = 0; | |
5240 | pSMB->Flags = 0; | |
5241 | pSMB->Timeout = 0; | |
5242 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5243 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5244 | - 4; | |
ac67055e JA |
5245 | offset = param_offset + params; |
5246 | ||
5247 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5248 | /* BB find exact max SMB PDU from sess structure BB */ |
5249 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5250 | pSMB->SetupCount = 1; |
5251 | pSMB->Reserved3 = 0; | |
5252 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5253 | byte_count = 1 /* pad */ + params + 12; | |
5254 | ||
5255 | pSMB->DataCount = cpu_to_le16(12); | |
5256 | pSMB->ParameterCount = cpu_to_le16(params); | |
5257 | pSMB->TotalDataCount = pSMB->DataCount; | |
5258 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5259 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5260 | pSMB->DataOffset = cpu_to_le16(offset); | |
5261 | ||
5262 | /* Params. */ | |
5263 | pSMB->FileNum = 0; | |
5264 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5265 | ||
5266 | /* Data. */ | |
5267 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5268 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5269 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5270 | ||
be8e3b00 | 5271 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5272 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5273 | ||
5274 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5275 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5276 | if (rc) { | |
f96637be | 5277 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5278 | } else { /* decode response */ |
5279 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5280 | if (rc) |
ac67055e | 5281 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5282 | } |
5283 | cifs_buf_release(pSMB); | |
5284 | ||
5285 | if (rc == -EAGAIN) | |
5286 | goto SETFSUnixRetry; | |
5287 | ||
5288 | return rc; | |
5289 | } | |
5290 | ||
5291 | ||
1da177e4 LT |
5292 | |
5293 | int | |
6d5786a3 | 5294 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5295 | struct kstatfs *FSData) |
1da177e4 LT |
5296 | { |
5297 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5298 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5299 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5300 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5301 | int rc = 0; | |
5302 | int bytes_returned = 0; | |
5303 | __u16 params, byte_count; | |
5304 | ||
f96637be | 5305 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5306 | QFSPosixRetry: |
5307 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5308 | (void **) &pSMBr); | |
5309 | if (rc) | |
5310 | return rc; | |
5311 | ||
5312 | params = 2; /* level */ | |
5313 | pSMB->TotalDataCount = 0; | |
5314 | pSMB->DataCount = 0; | |
5315 | pSMB->DataOffset = 0; | |
5316 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5317 | /* BB find exact max SMB PDU from sess structure BB */ |
5318 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5319 | pSMB->MaxSetupCount = 0; |
5320 | pSMB->Reserved = 0; | |
5321 | pSMB->Flags = 0; | |
5322 | pSMB->Timeout = 0; | |
5323 | pSMB->Reserved2 = 0; | |
5324 | byte_count = params + 1 /* pad */ ; | |
5325 | pSMB->ParameterCount = cpu_to_le16(params); | |
5326 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5327 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5328 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5329 | pSMB->SetupCount = 1; |
5330 | pSMB->Reserved3 = 0; | |
5331 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5332 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5333 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5334 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5335 | ||
5336 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5337 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5338 | if (rc) { | |
f96637be | 5339 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5340 | } else { /* decode response */ |
5341 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5342 | ||
820a803f | 5343 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5344 | rc = -EIO; /* bad smb */ |
5345 | } else { | |
5346 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5347 | response_data = | |
5348 | (FILE_SYSTEM_POSIX_INFO | |
5349 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5350 | data_offset); | |
5351 | FSData->f_bsize = | |
5352 | le32_to_cpu(response_data->BlockSize); | |
5353 | FSData->f_blocks = | |
5354 | le64_to_cpu(response_data->TotalBlocks); | |
5355 | FSData->f_bfree = | |
5356 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5357 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5358 | FSData->f_bavail = FSData->f_bfree; |
5359 | } else { | |
5360 | FSData->f_bavail = | |
50c2f753 | 5361 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5362 | } |
790fe579 | 5363 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5364 | FSData->f_files = |
50c2f753 | 5365 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5366 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5367 | FSData->f_ffree = |
50c2f753 | 5368 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5369 | } |
5370 | } | |
5371 | cifs_buf_release(pSMB); | |
5372 | ||
5373 | if (rc == -EAGAIN) | |
5374 | goto QFSPosixRetry; | |
5375 | ||
5376 | return rc; | |
5377 | } | |
5378 | ||
5379 | ||
d1433418 PS |
5380 | /* |
5381 | * We can not use write of zero bytes trick to set file size due to need for | |
5382 | * large file support. Also note that this SetPathInfo is preferred to | |
5383 | * SetFileInfo based method in next routine which is only needed to work around | |
5384 | * a sharing violation bugin Samba which this routine can run into. | |
5385 | */ | |
1da177e4 | 5386 | int |
6d5786a3 | 5387 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5388 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5389 | bool set_allocation) | |
1da177e4 LT |
5390 | { |
5391 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5392 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5393 | struct file_end_of_file_info *parm_data; | |
5394 | int name_len; | |
5395 | int rc = 0; | |
5396 | int bytes_returned = 0; | |
d1433418 PS |
5397 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
5398 | ||
1da177e4 LT |
5399 | __u16 params, byte_count, data_count, param_offset, offset; |
5400 | ||
f96637be | 5401 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5402 | SetEOFRetry: |
5403 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5404 | (void **) &pSMBr); | |
5405 | if (rc) | |
5406 | return rc; | |
5407 | ||
5408 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5409 | name_len = | |
d1433418 PS |
5410 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5411 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5412 | name_len++; /* trailing null */ |
5413 | name_len *= 2; | |
3e87d803 | 5414 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5415 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5416 | name_len++; /* trailing null */ |
d1433418 | 5417 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5418 | } |
5419 | params = 6 + name_len; | |
26f57364 | 5420 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5421 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5422 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5423 | pSMB->MaxSetupCount = 0; |
5424 | pSMB->Reserved = 0; | |
5425 | pSMB->Flags = 0; | |
5426 | pSMB->Timeout = 0; | |
5427 | pSMB->Reserved2 = 0; | |
5428 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5429 | InformationLevel) - 4; |
1da177e4 | 5430 | offset = param_offset + params; |
d1433418 | 5431 | if (set_allocation) { |
50c2f753 SF |
5432 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5433 | pSMB->InformationLevel = | |
5434 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5435 | else | |
5436 | pSMB->InformationLevel = | |
5437 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5438 | } else /* Set File Size */ { | |
1da177e4 LT |
5439 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5440 | pSMB->InformationLevel = | |
50c2f753 | 5441 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5442 | else |
5443 | pSMB->InformationLevel = | |
50c2f753 | 5444 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5445 | } |
5446 | ||
5447 | parm_data = | |
5448 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5449 | offset); | |
5450 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5451 | pSMB->DataOffset = cpu_to_le16(offset); | |
5452 | pSMB->SetupCount = 1; | |
5453 | pSMB->Reserved3 = 0; | |
5454 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5455 | byte_count = 3 /* pad */ + params + data_count; | |
5456 | pSMB->DataCount = cpu_to_le16(data_count); | |
5457 | pSMB->TotalDataCount = pSMB->DataCount; | |
5458 | pSMB->ParameterCount = cpu_to_le16(params); | |
5459 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5460 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5461 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5462 | parm_data->FileSize = cpu_to_le64(size); |
5463 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5464 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5465 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5466 | if (rc) |
f96637be | 5467 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5468 | |
5469 | cifs_buf_release(pSMB); | |
5470 | ||
5471 | if (rc == -EAGAIN) | |
5472 | goto SetEOFRetry; | |
5473 | ||
5474 | return rc; | |
5475 | } | |
5476 | ||
5477 | int | |
d1433418 PS |
5478 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5479 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5480 | { |
5481 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5482 | struct file_end_of_file_info *parm_data; |
5483 | int rc = 0; | |
1da177e4 LT |
5484 | __u16 params, param_offset, offset, byte_count, count; |
5485 | ||
f96637be JP |
5486 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5487 | (long long)size); | |
cd63499c SF |
5488 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5489 | ||
1da177e4 LT |
5490 | if (rc) |
5491 | return rc; | |
5492 | ||
d1433418 PS |
5493 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5494 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5495 | |
1da177e4 LT |
5496 | params = 6; |
5497 | pSMB->MaxSetupCount = 0; | |
5498 | pSMB->Reserved = 0; | |
5499 | pSMB->Flags = 0; | |
5500 | pSMB->Timeout = 0; | |
5501 | pSMB->Reserved2 = 0; | |
5502 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5503 | offset = param_offset + params; | |
5504 | ||
1da177e4 LT |
5505 | count = sizeof(struct file_end_of_file_info); |
5506 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5507 | /* BB find exact max SMB PDU from sess structure BB */ |
5508 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5509 | pSMB->SetupCount = 1; |
5510 | pSMB->Reserved3 = 0; | |
5511 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5512 | byte_count = 3 /* pad */ + params + count; | |
5513 | pSMB->DataCount = cpu_to_le16(count); | |
5514 | pSMB->ParameterCount = cpu_to_le16(params); | |
5515 | pSMB->TotalDataCount = pSMB->DataCount; | |
5516 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5517 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5518 | parm_data = | |
50c2f753 SF |
5519 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5520 | + offset); | |
1da177e4 LT |
5521 | pSMB->DataOffset = cpu_to_le16(offset); |
5522 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5523 | pSMB->Fid = cfile->fid.netfid; |
5524 | if (set_allocation) { | |
1da177e4 LT |
5525 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5526 | pSMB->InformationLevel = | |
5527 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5528 | else | |
5529 | pSMB->InformationLevel = | |
5530 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5531 | } else /* Set File Size */ { |
1da177e4 LT |
5532 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5533 | pSMB->InformationLevel = | |
50c2f753 | 5534 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5535 | else |
5536 | pSMB->InformationLevel = | |
50c2f753 | 5537 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5538 | } |
5539 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5540 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5541 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5542 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5543 | if (rc) { |
f96637be JP |
5544 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5545 | rc); | |
1da177e4 LT |
5546 | } |
5547 | ||
50c2f753 | 5548 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5549 | since file handle passed in no longer valid */ |
5550 | ||
5551 | return rc; | |
5552 | } | |
5553 | ||
50c2f753 | 5554 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5555 | an open handle, rather than by pathname - this is awkward due to |
5556 | potential access conflicts on the open, but it is unavoidable for these | |
5557 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5558 | time and resort to the original setpathinfo level which takes the ancient | |
5559 | DOS time format with 2 second granularity */ | |
5560 | int | |
6d5786a3 | 5561 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5562 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5563 | { |
5564 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5565 | char *data_offset; |
5566 | int rc = 0; | |
1da177e4 LT |
5567 | __u16 params, param_offset, offset, byte_count, count; |
5568 | ||
f96637be | 5569 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5570 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5571 | ||
1da177e4 LT |
5572 | if (rc) |
5573 | return rc; | |
5574 | ||
2dd2dfa0 JL |
5575 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5576 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5577 | |
1da177e4 LT |
5578 | params = 6; |
5579 | pSMB->MaxSetupCount = 0; | |
5580 | pSMB->Reserved = 0; | |
5581 | pSMB->Flags = 0; | |
5582 | pSMB->Timeout = 0; | |
5583 | pSMB->Reserved2 = 0; | |
5584 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5585 | offset = param_offset + params; | |
5586 | ||
b2a3ad9c JL |
5587 | data_offset = (char *)pSMB + |
5588 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5589 | |
26f57364 | 5590 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5591 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5592 | /* BB find max SMB PDU from sess */ |
5593 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5594 | pSMB->SetupCount = 1; |
5595 | pSMB->Reserved3 = 0; | |
5596 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5597 | byte_count = 3 /* pad */ + params + count; | |
5598 | pSMB->DataCount = cpu_to_le16(count); | |
5599 | pSMB->ParameterCount = cpu_to_le16(params); | |
5600 | pSMB->TotalDataCount = pSMB->DataCount; | |
5601 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5602 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5603 | pSMB->DataOffset = cpu_to_le16(offset); | |
5604 | pSMB->Fid = fid; | |
5605 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5606 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5607 | else | |
5608 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5609 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5610 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5611 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5612 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5613 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5614 | if (rc) |
f96637be JP |
5615 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5616 | rc); | |
1da177e4 | 5617 | |
50c2f753 | 5618 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5619 | since file handle passed in no longer valid */ |
5620 | ||
5621 | return rc; | |
5622 | } | |
5623 | ||
6d22f098 | 5624 | int |
6d5786a3 | 5625 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5626 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5627 | { | |
5628 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5629 | char *data_offset; | |
5630 | int rc = 0; | |
5631 | __u16 params, param_offset, offset, byte_count, count; | |
5632 | ||
f96637be | 5633 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5634 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5635 | ||
5636 | if (rc) | |
5637 | return rc; | |
5638 | ||
5639 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5640 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5641 | ||
5642 | params = 6; | |
5643 | pSMB->MaxSetupCount = 0; | |
5644 | pSMB->Reserved = 0; | |
5645 | pSMB->Flags = 0; | |
5646 | pSMB->Timeout = 0; | |
5647 | pSMB->Reserved2 = 0; | |
5648 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5649 | offset = param_offset + params; | |
5650 | ||
5651 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5652 | ||
5653 | count = 1; | |
5654 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5655 | /* BB find max SMB PDU from sess */ | |
5656 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5657 | pSMB->SetupCount = 1; | |
5658 | pSMB->Reserved3 = 0; | |
5659 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5660 | byte_count = 3 /* pad */ + params + count; | |
5661 | pSMB->DataCount = cpu_to_le16(count); | |
5662 | pSMB->ParameterCount = cpu_to_le16(params); | |
5663 | pSMB->TotalDataCount = pSMB->DataCount; | |
5664 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5665 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5666 | pSMB->DataOffset = cpu_to_le16(offset); | |
5667 | pSMB->Fid = fid; | |
5668 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5669 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5670 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5671 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5672 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5673 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5674 | if (rc) |
f96637be | 5675 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5676 | |
5677 | return rc; | |
5678 | } | |
1da177e4 LT |
5679 | |
5680 | int | |
6d5786a3 | 5681 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5682 | const char *fileName, const FILE_BASIC_INFO *data, |
5683 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5684 | { |
5685 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5686 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5687 | int name_len; | |
5688 | int rc = 0; | |
5689 | int bytes_returned = 0; | |
5690 | char *data_offset; | |
5691 | __u16 params, param_offset, offset, byte_count, count; | |
5692 | ||
f96637be | 5693 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5694 | |
5695 | SetTimesRetry: | |
5696 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5697 | (void **) &pSMBr); | |
5698 | if (rc) | |
5699 | return rc; | |
5700 | ||
5701 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5702 | name_len = | |
acbbb76a SF |
5703 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5704 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5705 | name_len++; /* trailing null */ |
5706 | name_len *= 2; | |
50c2f753 | 5707 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5708 | name_len = strnlen(fileName, PATH_MAX); |
5709 | name_len++; /* trailing null */ | |
5710 | strncpy(pSMB->FileName, fileName, name_len); | |
5711 | } | |
5712 | ||
5713 | params = 6 + name_len; | |
26f57364 | 5714 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5715 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5716 | /* BB find max SMB PDU from sess structure BB */ |
5717 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5718 | pSMB->MaxSetupCount = 0; |
5719 | pSMB->Reserved = 0; | |
5720 | pSMB->Flags = 0; | |
5721 | pSMB->Timeout = 0; | |
5722 | pSMB->Reserved2 = 0; | |
5723 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5724 | InformationLevel) - 4; |
1da177e4 LT |
5725 | offset = param_offset + params; |
5726 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5727 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5728 | pSMB->DataOffset = cpu_to_le16(offset); | |
5729 | pSMB->SetupCount = 1; | |
5730 | pSMB->Reserved3 = 0; | |
5731 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5732 | byte_count = 3 /* pad */ + params + count; | |
5733 | ||
5734 | pSMB->DataCount = cpu_to_le16(count); | |
5735 | pSMB->ParameterCount = cpu_to_le16(params); | |
5736 | pSMB->TotalDataCount = pSMB->DataCount; | |
5737 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5738 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5739 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5740 | else | |
5741 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5742 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5743 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5744 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5745 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5746 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5747 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5748 | if (rc) |
f96637be | 5749 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5750 | |
5751 | cifs_buf_release(pSMB); | |
5752 | ||
5753 | if (rc == -EAGAIN) | |
5754 | goto SetTimesRetry; | |
5755 | ||
5756 | return rc; | |
5757 | } | |
5758 | ||
5759 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5760 | /* Can be used to set attributes */ | |
5761 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5762 | handling it anyway and NT4 was what we thought it would be needed for | |
5763 | Do not delete it until we prove whether needed for Win9x though */ | |
5764 | int | |
6d5786a3 | 5765 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5766 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5767 | { | |
5768 | SETATTR_REQ *pSMB = NULL; | |
5769 | SETATTR_RSP *pSMBr = NULL; | |
5770 | int rc = 0; | |
5771 | int bytes_returned; | |
5772 | int name_len; | |
5773 | ||
f96637be | 5774 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5775 | |
5776 | SetAttrLgcyRetry: | |
5777 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5778 | (void **) &pSMBr); | |
5779 | if (rc) | |
5780 | return rc; | |
5781 | ||
5782 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5783 | name_len = | |
acbbb76a SF |
5784 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5785 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5786 | name_len++; /* trailing null */ |
5787 | name_len *= 2; | |
50c2f753 | 5788 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5789 | name_len = strnlen(fileName, PATH_MAX); |
5790 | name_len++; /* trailing null */ | |
5791 | strncpy(pSMB->fileName, fileName, name_len); | |
5792 | } | |
5793 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5794 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5795 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5796 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5797 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5798 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5799 | if (rc) |
f96637be | 5800 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5801 | |
5802 | cifs_buf_release(pSMB); | |
5803 | ||
5804 | if (rc == -EAGAIN) | |
5805 | goto SetAttrLgcyRetry; | |
5806 | ||
5807 | return rc; | |
5808 | } | |
5809 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5810 | ||
654cf14a JL |
5811 | static void |
5812 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5813 | const struct cifs_unix_set_info_args *args) | |
5814 | { | |
49418b2c | 5815 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5816 | u64 mode = args->mode; |
5817 | ||
49418b2c EB |
5818 | if (uid_valid(args->uid)) |
5819 | uid = from_kuid(&init_user_ns, args->uid); | |
5820 | if (gid_valid(args->gid)) | |
5821 | gid = from_kgid(&init_user_ns, args->gid); | |
5822 | ||
654cf14a JL |
5823 | /* |
5824 | * Samba server ignores set of file size to zero due to bugs in some | |
5825 | * older clients, but we should be precise - we use SetFileSize to | |
5826 | * set file size and do not want to truncate file size to zero | |
25985edc | 5827 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5828 | * zero instead of -1 here |
5829 | */ | |
5830 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5831 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5832 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5833 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5834 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5835 | data_offset->Uid = cpu_to_le64(uid); |
5836 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5837 | /* better to leave device as zero when it is */ |
5838 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5839 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5840 | data_offset->Permissions = cpu_to_le64(mode); | |
5841 | ||
5842 | if (S_ISREG(mode)) | |
5843 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5844 | else if (S_ISDIR(mode)) | |
5845 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5846 | else if (S_ISLNK(mode)) | |
5847 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5848 | else if (S_ISCHR(mode)) | |
5849 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5850 | else if (S_ISBLK(mode)) | |
5851 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5852 | else if (S_ISFIFO(mode)) | |
5853 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5854 | else if (S_ISSOCK(mode)) | |
5855 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5856 | } | |
5857 | ||
3bbeeb3c | 5858 | int |
6d5786a3 | 5859 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5860 | const struct cifs_unix_set_info_args *args, |
5861 | u16 fid, u32 pid_of_opener) | |
5862 | { | |
5863 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5864 | char *data_offset; |
3bbeeb3c JL |
5865 | int rc = 0; |
5866 | u16 params, param_offset, offset, byte_count, count; | |
5867 | ||
f96637be | 5868 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5869 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5870 | ||
5871 | if (rc) | |
5872 | return rc; | |
5873 | ||
5874 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5875 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5876 | ||
5877 | params = 6; | |
5878 | pSMB->MaxSetupCount = 0; | |
5879 | pSMB->Reserved = 0; | |
5880 | pSMB->Flags = 0; | |
5881 | pSMB->Timeout = 0; | |
5882 | pSMB->Reserved2 = 0; | |
5883 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5884 | offset = param_offset + params; | |
5885 | ||
b2a3ad9c JL |
5886 | data_offset = (char *)pSMB + |
5887 | offsetof(struct smb_hdr, Protocol) + offset; | |
5888 | ||
3bbeeb3c JL |
5889 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5890 | ||
5891 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5892 | /* BB find max SMB PDU from sess */ | |
5893 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5894 | pSMB->SetupCount = 1; | |
5895 | pSMB->Reserved3 = 0; | |
5896 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5897 | byte_count = 3 /* pad */ + params + count; | |
5898 | pSMB->DataCount = cpu_to_le16(count); | |
5899 | pSMB->ParameterCount = cpu_to_le16(params); | |
5900 | pSMB->TotalDataCount = pSMB->DataCount; | |
5901 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5902 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5903 | pSMB->DataOffset = cpu_to_le16(offset); | |
5904 | pSMB->Fid = fid; | |
5905 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5906 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5907 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5908 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5909 | ||
b2a3ad9c | 5910 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5911 | |
792af7b0 | 5912 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5913 | if (rc) |
f96637be JP |
5914 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5915 | rc); | |
3bbeeb3c JL |
5916 | |
5917 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5918 | since file handle passed in no longer valid */ | |
5919 | ||
5920 | return rc; | |
5921 | } | |
5922 | ||
1da177e4 | 5923 | int |
6d5786a3 | 5924 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5925 | const char *file_name, |
01ea95e3 JL |
5926 | const struct cifs_unix_set_info_args *args, |
5927 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5928 | { |
5929 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5930 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5931 | int name_len; | |
5932 | int rc = 0; | |
5933 | int bytes_returned = 0; | |
5934 | FILE_UNIX_BASIC_INFO *data_offset; | |
5935 | __u16 params, param_offset, offset, count, byte_count; | |
5936 | ||
f96637be | 5937 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5938 | setPermsRetry: |
5939 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5940 | (void **) &pSMBr); | |
5941 | if (rc) | |
5942 | return rc; | |
5943 | ||
5944 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5945 | name_len = | |
ff691e96 | 5946 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5947 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5948 | name_len++; /* trailing null */ |
5949 | name_len *= 2; | |
3e87d803 | 5950 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 5951 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5952 | name_len++; /* trailing null */ |
ff691e96 | 5953 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5954 | } |
5955 | ||
5956 | params = 6 + name_len; | |
26f57364 | 5957 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5958 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5959 | /* BB find max SMB PDU from sess structure BB */ |
5960 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5961 | pSMB->MaxSetupCount = 0; |
5962 | pSMB->Reserved = 0; | |
5963 | pSMB->Flags = 0; | |
5964 | pSMB->Timeout = 0; | |
5965 | pSMB->Reserved2 = 0; | |
5966 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5967 | InformationLevel) - 4; |
1da177e4 LT |
5968 | offset = param_offset + params; |
5969 | data_offset = | |
5970 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5971 | offset); | |
5972 | memset(data_offset, 0, count); | |
5973 | pSMB->DataOffset = cpu_to_le16(offset); | |
5974 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5975 | pSMB->SetupCount = 1; | |
5976 | pSMB->Reserved3 = 0; | |
5977 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5978 | byte_count = 3 /* pad */ + params + count; | |
5979 | pSMB->ParameterCount = cpu_to_le16(params); | |
5980 | pSMB->DataCount = cpu_to_le16(count); | |
5981 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5982 | pSMB->TotalDataCount = pSMB->DataCount; | |
5983 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5984 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5985 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5986 | |
654cf14a | 5987 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5988 | |
5989 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5990 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5991 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5992 | if (rc) |
f96637be | 5993 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 5994 | |
0d817bc0 | 5995 | cifs_buf_release(pSMB); |
1da177e4 LT |
5996 | if (rc == -EAGAIN) |
5997 | goto setPermsRetry; | |
5998 | return rc; | |
5999 | } | |
6000 | ||
1da177e4 | 6001 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6002 | /* |
6003 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6004 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6005 | * it looks for that attribute name and stuffs that value into the EAData | |
6006 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6007 | * buffer. In both cases, the return value is either the length of the | |
6008 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6009 | * the data isn't copied to it, but the length is returned. | |
6010 | */ | |
1da177e4 | 6011 | ssize_t |
6d5786a3 | 6012 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6013 | const unsigned char *searchName, const unsigned char *ea_name, |
6014 | char *EAData, size_t buf_size, | |
6015 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6016 | { |
6017 | /* BB assumes one setup word */ | |
6018 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6019 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6020 | int rc = 0; | |
6021 | int bytes_returned; | |
6e462b9f | 6022 | int list_len; |
f0d3868b | 6023 | struct fealist *ea_response_data; |
50c2f753 SF |
6024 | struct fea *temp_fea; |
6025 | char *temp_ptr; | |
0cd126b5 | 6026 | char *end_of_smb; |
f0d3868b | 6027 | __u16 params, byte_count, data_offset; |
5980fc96 | 6028 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6029 | |
f96637be | 6030 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6031 | QAllEAsRetry: |
6032 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6033 | (void **) &pSMBr); | |
6034 | if (rc) | |
6035 | return rc; | |
6036 | ||
6037 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6038 | list_len = |
acbbb76a SF |
6039 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6040 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6041 | list_len++; /* trailing null */ |
6042 | list_len *= 2; | |
1da177e4 | 6043 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6044 | list_len = strnlen(searchName, PATH_MAX); |
6045 | list_len++; /* trailing null */ | |
6046 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6047 | } |
6048 | ||
6e462b9f | 6049 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6050 | pSMB->TotalDataCount = 0; |
6051 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6052 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6053 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6054 | pSMB->MaxSetupCount = 0; |
6055 | pSMB->Reserved = 0; | |
6056 | pSMB->Flags = 0; | |
6057 | pSMB->Timeout = 0; | |
6058 | pSMB->Reserved2 = 0; | |
6059 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6060 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6061 | pSMB->DataCount = 0; |
6062 | pSMB->DataOffset = 0; | |
6063 | pSMB->SetupCount = 1; | |
6064 | pSMB->Reserved3 = 0; | |
6065 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6066 | byte_count = params + 1 /* pad */ ; | |
6067 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6068 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6069 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6070 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6071 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6072 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6073 | ||
6074 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6075 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6076 | if (rc) { | |
f96637be | 6077 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6078 | goto QAllEAsOut; |
6079 | } | |
1da177e4 | 6080 | |
f0d3868b JL |
6081 | |
6082 | /* BB also check enough total bytes returned */ | |
6083 | /* BB we need to improve the validity checking | |
6084 | of these trans2 responses */ | |
6085 | ||
6086 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6087 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6088 | rc = -EIO; /* bad smb */ |
6089 | goto QAllEAsOut; | |
6090 | } | |
6091 | ||
6092 | /* check that length of list is not more than bcc */ | |
6093 | /* check that each entry does not go beyond length | |
6094 | of list */ | |
6095 | /* check that each element of each entry does not | |
6096 | go beyond end of list */ | |
6097 | /* validate_trans2_offsets() */ | |
6098 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6099 | ||
6100 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6101 | ea_response_data = (struct fealist *) | |
6102 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6103 | ||
6e462b9f | 6104 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6105 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6106 | if (list_len <= 8) { |
f96637be | 6107 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
f0d3868b JL |
6108 | goto QAllEAsOut; |
6109 | } | |
6110 | ||
0cd126b5 | 6111 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6112 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6113 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6114 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6115 | rc = -EIO; |
6116 | goto QAllEAsOut; | |
6117 | } | |
6118 | ||
f0d3868b | 6119 | /* account for ea list len */ |
6e462b9f | 6120 | list_len -= 4; |
f0d3868b JL |
6121 | temp_fea = ea_response_data->list; |
6122 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6123 | while (list_len > 0) { |
122ca007 | 6124 | unsigned int name_len; |
f0d3868b | 6125 | __u16 value_len; |
0cd126b5 | 6126 | |
6e462b9f | 6127 | list_len -= 4; |
f0d3868b | 6128 | temp_ptr += 4; |
0cd126b5 JL |
6129 | /* make sure we can read name_len and value_len */ |
6130 | if (list_len < 0) { | |
f96637be | 6131 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6132 | rc = -EIO; |
6133 | goto QAllEAsOut; | |
6134 | } | |
6135 | ||
6136 | name_len = temp_fea->name_len; | |
6137 | value_len = le16_to_cpu(temp_fea->value_len); | |
6138 | list_len -= name_len + 1 + value_len; | |
6139 | if (list_len < 0) { | |
f96637be | 6140 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6141 | rc = -EIO; |
6142 | goto QAllEAsOut; | |
6143 | } | |
6144 | ||
31c0519f | 6145 | if (ea_name) { |
91d065c4 | 6146 | if (ea_name_len == name_len && |
ac423446 | 6147 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6148 | temp_ptr += name_len + 1; |
6149 | rc = value_len; | |
6150 | if (buf_size == 0) | |
6151 | goto QAllEAsOut; | |
6152 | if ((size_t)value_len > buf_size) { | |
6153 | rc = -ERANGE; | |
6154 | goto QAllEAsOut; | |
6155 | } | |
6156 | memcpy(EAData, temp_ptr, value_len); | |
6157 | goto QAllEAsOut; | |
6158 | } | |
f0d3868b | 6159 | } else { |
31c0519f JL |
6160 | /* account for prefix user. and trailing null */ |
6161 | rc += (5 + 1 + name_len); | |
6162 | if (rc < (int) buf_size) { | |
6163 | memcpy(EAData, "user.", 5); | |
6164 | EAData += 5; | |
6165 | memcpy(EAData, temp_ptr, name_len); | |
6166 | EAData += name_len; | |
6167 | /* null terminate name */ | |
6168 | *EAData = 0; | |
6169 | ++EAData; | |
6170 | } else if (buf_size == 0) { | |
6171 | /* skip copy - calc size only */ | |
6172 | } else { | |
6173 | /* stop before overrun buffer */ | |
6174 | rc = -ERANGE; | |
6175 | break; | |
6176 | } | |
1da177e4 | 6177 | } |
0cd126b5 | 6178 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6179 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6180 | } |
f0d3868b | 6181 | |
31c0519f JL |
6182 | /* didn't find the named attribute */ |
6183 | if (ea_name) | |
6184 | rc = -ENODATA; | |
6185 | ||
f0d3868b | 6186 | QAllEAsOut: |
0d817bc0 | 6187 | cifs_buf_release(pSMB); |
1da177e4 LT |
6188 | if (rc == -EAGAIN) |
6189 | goto QAllEAsRetry; | |
6190 | ||
6191 | return (ssize_t)rc; | |
6192 | } | |
6193 | ||
1da177e4 | 6194 | int |
6d5786a3 PS |
6195 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6196 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6197 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6198 | int remap) | |
1da177e4 LT |
6199 | { |
6200 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6201 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6202 | struct fealist *parm_data; | |
6203 | int name_len; | |
6204 | int rc = 0; | |
6205 | int bytes_returned = 0; | |
6206 | __u16 params, param_offset, byte_count, offset, count; | |
6207 | ||
f96637be | 6208 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6209 | SetEARetry: |
6210 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6211 | (void **) &pSMBr); | |
6212 | if (rc) | |
6213 | return rc; | |
6214 | ||
6215 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6216 | name_len = | |
acbbb76a SF |
6217 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6218 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6219 | name_len++; /* trailing null */ |
6220 | name_len *= 2; | |
50c2f753 | 6221 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6222 | name_len = strnlen(fileName, PATH_MAX); |
6223 | name_len++; /* trailing null */ | |
6224 | strncpy(pSMB->FileName, fileName, name_len); | |
6225 | } | |
6226 | ||
6227 | params = 6 + name_len; | |
6228 | ||
6229 | /* done calculating parms using name_len of file name, | |
6230 | now use name_len to calculate length of ea name | |
6231 | we are going to create in the inode xattrs */ | |
790fe579 | 6232 | if (ea_name == NULL) |
1da177e4 LT |
6233 | name_len = 0; |
6234 | else | |
50c2f753 | 6235 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6236 | |
dae5dbdb | 6237 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6238 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6239 | /* BB find max SMB PDU from sess */ |
6240 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6241 | pSMB->MaxSetupCount = 0; |
6242 | pSMB->Reserved = 0; | |
6243 | pSMB->Flags = 0; | |
6244 | pSMB->Timeout = 0; | |
6245 | pSMB->Reserved2 = 0; | |
6246 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6247 | InformationLevel) - 4; |
1da177e4 LT |
6248 | offset = param_offset + params; |
6249 | pSMB->InformationLevel = | |
6250 | cpu_to_le16(SMB_SET_FILE_EA); | |
6251 | ||
6252 | parm_data = | |
6253 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6254 | offset); | |
6255 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6256 | pSMB->DataOffset = cpu_to_le16(offset); | |
6257 | pSMB->SetupCount = 1; | |
6258 | pSMB->Reserved3 = 0; | |
6259 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6260 | byte_count = 3 /* pad */ + params + count; | |
6261 | pSMB->DataCount = cpu_to_le16(count); | |
6262 | parm_data->list_len = cpu_to_le32(count); | |
6263 | parm_data->list[0].EA_flags = 0; | |
6264 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6265 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6266 | /* EA names are always ASCII */ |
790fe579 | 6267 | if (ea_name) |
50c2f753 | 6268 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6269 | parm_data->list[0].name[name_len] = 0; |
6270 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6271 | /* caller ensures that ea_value_len is less than 64K but | |
6272 | we need to ensure that it fits within the smb */ | |
6273 | ||
50c2f753 SF |
6274 | /*BB add length check to see if it would fit in |
6275 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6276 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6277 | if (ea_value_len) | |
50c2f753 SF |
6278 | memcpy(parm_data->list[0].name+name_len+1, |
6279 | ea_value, ea_value_len); | |
1da177e4 LT |
6280 | |
6281 | pSMB->TotalDataCount = pSMB->DataCount; | |
6282 | pSMB->ParameterCount = cpu_to_le16(params); | |
6283 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6284 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6285 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6286 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6287 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6288 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6289 | if (rc) |
f96637be | 6290 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6291 | |
6292 | cifs_buf_release(pSMB); | |
6293 | ||
6294 | if (rc == -EAGAIN) | |
6295 | goto SetEARetry; | |
6296 | ||
6297 | return rc; | |
6298 | } | |
1da177e4 | 6299 | #endif |
0eff0e26 SF |
6300 | |
6301 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6302 | /* | |
6303 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6304 | * to allow network clients (such as Windows) to display updated | |
6305 | * lists of files in directory listings automatically when | |
6306 | * files are added by one user when another user has the | |
6307 | * same directory open on their desktop. The Linux cifs kernel | |
6308 | * client hooked into the kernel side of this interface for | |
6309 | * the same reason, but ironically when the VFS moved from | |
6310 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6311 | * network file system clients (the most obvious use case | |
6312 | * for notify interfaces is when multiple users can update | |
6313 | * the contents of the same directory - exactly what network | |
6314 | * file systems can do) although the server (Samba) could | |
6315 | * still use it. For the short term we leave the worker | |
6316 | * function ifdeffed out (below) until inotify is fixed | |
6317 | * in the VFS to make it easier to plug in network file | |
6318 | * system clients. If inotify turns out to be permanently | |
6319 | * incompatible for network fs clients, we could instead simply | |
6320 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6321 | */ | |
6d5786a3 | 6322 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6323 | const int notify_subdirs, const __u16 netfid, |
6324 | __u32 filter, struct file *pfile, int multishot, | |
6325 | const struct nls_table *nls_codepage) | |
6326 | { | |
6327 | int rc = 0; | |
6328 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6329 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6330 | struct dir_notify_req *dnotify_req; | |
6331 | int bytes_returned; | |
6332 | ||
f96637be | 6333 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6334 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6335 | (void **) &pSMBr); | |
6336 | if (rc) | |
6337 | return rc; | |
6338 | ||
6339 | pSMB->TotalParameterCount = 0 ; | |
6340 | pSMB->TotalDataCount = 0; | |
6341 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6342 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6343 | pSMB->MaxSetupCount = 4; |
6344 | pSMB->Reserved = 0; | |
6345 | pSMB->ParameterOffset = 0; | |
6346 | pSMB->DataCount = 0; | |
6347 | pSMB->DataOffset = 0; | |
6348 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6349 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6350 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6351 | if (notify_subdirs) | |
6352 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6353 | pSMB->Reserved2 = 0; | |
6354 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6355 | pSMB->Fid = netfid; /* file handle always le */ | |
6356 | pSMB->ByteCount = 0; | |
6357 | ||
6358 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6359 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6360 | CIFS_ASYNC_OP); | |
6361 | if (rc) { | |
f96637be | 6362 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6363 | } else { |
6364 | /* Add file to outstanding requests */ | |
6365 | /* BB change to kmem cache alloc */ | |
6366 | dnotify_req = kmalloc( | |
6367 | sizeof(struct dir_notify_req), | |
6368 | GFP_KERNEL); | |
6369 | if (dnotify_req) { | |
6370 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6371 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6372 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6373 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6374 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6375 | dnotify_req->netfid = netfid; | |
6376 | dnotify_req->pfile = pfile; | |
6377 | dnotify_req->filter = filter; | |
6378 | dnotify_req->multishot = multishot; | |
6379 | spin_lock(&GlobalMid_Lock); | |
6380 | list_add_tail(&dnotify_req->lhead, | |
6381 | &GlobalDnotifyReqList); | |
6382 | spin_unlock(&GlobalMid_Lock); | |
6383 | } else | |
6384 | rc = -ENOMEM; | |
6385 | } | |
6386 | cifs_buf_release(pSMB); | |
6387 | return rc; | |
6388 | } | |
6389 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |