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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> | |
7c0f6ba6 | 38 | #include <linux/uaccess.h> |
1da177e4 LT |
39 | #include "cifspdu.h" |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
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 */ |
3afca265 | 101 | spin_lock(&tcon->open_file_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 | } |
3afca265 | 107 | spin_unlock(&tcon->open_file_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 | ||
9162ab20 JL |
199 | atomic_inc(&tconInfoReconnectCount); |
200 | ||
201 | /* tell server Unix caps we support */ | |
202 | if (ses->capabilities & CAP_UNIX) | |
203 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
204 | ||
205 | /* | |
206 | * Removed call to reopen open files here. It is safer (and faster) to | |
207 | * reopen files one at a time as needed in read and write. | |
208 | * | |
209 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
210 | */ | |
211 | ||
212 | out: | |
213 | /* | |
214 | * Check if handle based operation so we know whether we can continue | |
215 | * or not without returning to caller to reset file handle | |
216 | */ | |
217 | switch (smb_command) { | |
218 | case SMB_COM_READ_ANDX: | |
219 | case SMB_COM_WRITE_ANDX: | |
220 | case SMB_COM_CLOSE: | |
221 | case SMB_COM_FIND_CLOSE2: | |
222 | case SMB_COM_LOCKING_ANDX: | |
223 | rc = -EAGAIN; | |
224 | } | |
225 | ||
226 | unload_nls(nls_codepage); | |
227 | return rc; | |
228 | } | |
229 | ||
ad7a2926 SF |
230 | /* Allocate and return pointer to an SMB request buffer, and set basic |
231 | SMB information in the SMB header. If the return code is zero, this | |
232 | function must have filled in request_buf pointer */ | |
1da177e4 | 233 | static int |
96daf2b0 | 234 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 235 | void **request_buf) |
1da177e4 | 236 | { |
f569599a | 237 | int rc; |
1da177e4 | 238 | |
9162ab20 | 239 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 240 | if (rc) |
1da177e4 LT |
241 | return rc; |
242 | ||
243 | *request_buf = cifs_small_buf_get(); | |
244 | if (*request_buf == NULL) { | |
245 | /* BB should we add a retry in here if not a writepage? */ | |
246 | return -ENOMEM; | |
247 | } | |
248 | ||
63135e08 | 249 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 250 | tcon, wct); |
1da177e4 | 251 | |
790fe579 SF |
252 | if (tcon != NULL) |
253 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 254 | |
f569599a | 255 | return 0; |
5815449d SF |
256 | } |
257 | ||
12b3b8ff | 258 | int |
50c2f753 | 259 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 260 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
261 | { |
262 | int rc; | |
50c2f753 | 263 | struct smb_hdr *buffer; |
12b3b8ff | 264 | |
5815449d | 265 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 266 | if (rc) |
12b3b8ff SF |
267 | return rc; |
268 | ||
04fdabe1 | 269 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 270 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
271 | if (ses->capabilities & CAP_UNICODE) |
272 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 273 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
274 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
275 | ||
276 | /* uid, tid can stay at zero as set in header assemble */ | |
277 | ||
50c2f753 | 278 | /* BB add support for turning on the signing when |
12b3b8ff SF |
279 | this function is used after 1st of session setup requests */ |
280 | ||
281 | return rc; | |
282 | } | |
1da177e4 LT |
283 | |
284 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
285 | static int | |
96daf2b0 | 286 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 287 | void **request_buf, void **response_buf) |
1da177e4 | 288 | { |
1da177e4 LT |
289 | *request_buf = cifs_buf_get(); |
290 | if (*request_buf == NULL) { | |
291 | /* BB should we add a retry in here if not a writepage? */ | |
292 | return -ENOMEM; | |
293 | } | |
294 | /* Although the original thought was we needed the response buf for */ | |
295 | /* potential retries of smb operations it turns out we can determine */ | |
296 | /* from the mid flags when the request buffer can be resent without */ | |
297 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 298 | if (response_buf) |
50c2f753 | 299 | *response_buf = *request_buf; |
1da177e4 LT |
300 | |
301 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 302 | wct); |
1da177e4 | 303 | |
790fe579 SF |
304 | if (tcon != NULL) |
305 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 306 | |
f569599a JL |
307 | return 0; |
308 | } | |
309 | ||
310 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
311 | static int | |
96daf2b0 | 312 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
313 | void **request_buf, void **response_buf) |
314 | { | |
315 | int rc; | |
316 | ||
317 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
318 | if (rc) | |
319 | return rc; | |
320 | ||
321 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
322 | } | |
323 | ||
324 | static int | |
96daf2b0 | 325 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
326 | void **request_buf, void **response_buf) |
327 | { | |
328 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
329 | return -EHOSTDOWN; | |
330 | ||
331 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
332 | } |
333 | ||
50c2f753 | 334 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 335 | { |
12df83c9 JL |
336 | unsigned int total_size; |
337 | ||
338 | /* check for plausible wct */ | |
339 | if (pSMB->hdr.WordCount < 10) | |
340 | goto vt2_err; | |
1da177e4 | 341 | |
1da177e4 | 342 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
343 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
344 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
345 | goto vt2_err; | |
346 | ||
12df83c9 JL |
347 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
348 | if (total_size >= 512) | |
349 | goto vt2_err; | |
350 | ||
fd5707e1 JL |
351 | /* check that bcc is at least as big as parms + data, and that it is |
352 | * less than negotiated smb buffer | |
353 | */ | |
12df83c9 JL |
354 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
355 | if (total_size > get_bcc(&pSMB->hdr) || | |
356 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
357 | goto vt2_err; | |
358 | ||
359 | return 0; | |
360 | vt2_err: | |
50c2f753 | 361 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 362 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 363 | return -EINVAL; |
1da177e4 | 364 | } |
690c522f | 365 | |
31d9e2bd | 366 | static int |
3f618223 | 367 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
368 | { |
369 | int rc = 0; | |
370 | u16 count; | |
371 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 372 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
373 | |
374 | count = get_bcc(&pSMBr->hdr); | |
375 | if (count < SMB1_CLIENT_GUID_SIZE) | |
376 | return -EIO; | |
377 | ||
378 | spin_lock(&cifs_tcp_ses_lock); | |
379 | if (server->srv_count > 1) { | |
380 | spin_unlock(&cifs_tcp_ses_lock); | |
381 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
382 | cifs_dbg(FYI, "server UID changed\n"); | |
383 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
384 | } | |
385 | } else { | |
386 | spin_unlock(&cifs_tcp_ses_lock); | |
387 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
388 | } | |
389 | ||
390 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 391 | server->sec_ntlmssp = true; |
31d9e2bd JL |
392 | } else { |
393 | count -= SMB1_CLIENT_GUID_SIZE; | |
394 | rc = decode_negTokenInit( | |
395 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
396 | if (rc != 1) | |
397 | return -EINVAL; | |
31d9e2bd JL |
398 | } |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
9ddec561 | 403 | int |
38d77c50 | 404 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 405 | { |
50285882 JL |
406 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
407 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
408 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
409 | ||
410 | /* | |
411 | * Is signing required by mnt options? If not then check | |
412 | * global_secflags to see if it is there. | |
413 | */ | |
414 | if (!mnt_sign_required) | |
415 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
416 | CIFSSEC_MUST_SIGN); | |
417 | ||
418 | /* | |
419 | * If signing is required then it's automatically enabled too, | |
420 | * otherwise, check to see if the secflags allow it. | |
421 | */ | |
422 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
423 | (global_secflags & CIFSSEC_MAY_SIGN); | |
424 | ||
425 | /* If server requires signing, does client allow it? */ | |
426 | if (srv_sign_required) { | |
427 | if (!mnt_sign_enabled) { | |
428 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
429 | return -ENOTSUPP; | |
9ddec561 | 430 | } |
38d77c50 JL |
431 | server->sign = true; |
432 | } | |
433 | ||
434 | /* If client requires signing, does server allow it? */ | |
435 | if (mnt_sign_required) { | |
436 | if (!srv_sign_enabled) { | |
437 | cifs_dbg(VFS, "Server does not support signing!"); | |
438 | return -ENOTSUPP; | |
439 | } | |
440 | server->sign = true; | |
9ddec561 JL |
441 | } |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
2190eca1 JL |
446 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
447 | static int | |
3f618223 | 448 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
449 | { |
450 | __s16 tmp; | |
451 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
452 | ||
453 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
454 | return -EOPNOTSUPP; | |
455 | ||
2190eca1 JL |
456 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
457 | server->maxReq = min_t(unsigned int, | |
458 | le16_to_cpu(rsp->MaxMpxCount), | |
459 | cifs_max_pending); | |
460 | set_credits(server, server->maxReq); | |
461 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
2190eca1 JL |
462 | /* even though we do not use raw we might as well set this |
463 | accurately, in case we ever find a need for it */ | |
464 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
465 | server->max_rw = 0xFF00; | |
466 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
467 | } else { | |
468 | server->max_rw = 0;/* do not need to use raw anyway */ | |
469 | server->capabilities = CAP_MPX_MODE; | |
470 | } | |
471 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
472 | if (tmp == -1) { | |
473 | /* OS/2 often does not set timezone therefore | |
474 | * we must use server time to calc time zone. | |
475 | * Could deviate slightly from the right zone. | |
476 | * Smallest defined timezone difference is 15 minutes | |
477 | * (i.e. Nepal). Rounding up/down is done to match | |
478 | * this requirement. | |
479 | */ | |
480 | int val, seconds, remain, result; | |
e37fea58 DD |
481 | struct timespec ts; |
482 | unsigned long utc = ktime_get_real_seconds(); | |
2190eca1 JL |
483 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
484 | rsp->SrvTime.Time, 0); | |
485 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
e37fea58 DD |
486 | (int)ts.tv_sec, (int)utc, |
487 | (int)(utc - ts.tv_sec)); | |
488 | val = (int)(utc - ts.tv_sec); | |
2190eca1 JL |
489 | seconds = abs(val); |
490 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
491 | remain = seconds % MIN_TZ_ADJ; | |
492 | if (remain >= (MIN_TZ_ADJ / 2)) | |
493 | result += MIN_TZ_ADJ; | |
494 | if (val < 0) | |
495 | result = -result; | |
496 | server->timeAdj = result; | |
497 | } else { | |
498 | server->timeAdj = (int)tmp; | |
499 | server->timeAdj *= 60; /* also in seconds */ | |
500 | } | |
501 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
502 | ||
503 | ||
504 | /* BB get server time for time conversions and add | |
505 | code to use it and timezone since this is not UTC */ | |
506 | ||
507 | if (rsp->EncryptionKeyLength == | |
508 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
509 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
510 | CIFS_CRYPTO_KEY_SIZE); | |
511 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
512 | return -EIO; /* need cryptkey unless plain text */ | |
513 | } | |
514 | ||
515 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
516 | return 0; | |
517 | } | |
518 | #else | |
519 | static inline int | |
3f618223 | 520 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
521 | { |
522 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
523 | return -EOPNOTSUPP; | |
524 | } | |
525 | #endif | |
526 | ||
9193400b | 527 | static bool |
3f618223 | 528 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 529 | { |
3f618223 JL |
530 | switch (sectype) { |
531 | case RawNTLMSSP: | |
532 | case Kerberos: | |
9193400b | 533 | return true; |
3f618223 JL |
534 | case Unspecified: |
535 | if (global_secflags & | |
536 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
537 | return true; | |
538 | /* Fallthrough */ | |
539 | default: | |
540 | return false; | |
541 | } | |
9193400b JL |
542 | } |
543 | ||
1da177e4 | 544 | int |
286170aa | 545 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
546 | { |
547 | NEGOTIATE_REQ *pSMB; | |
548 | NEGOTIATE_RSP *pSMBr; | |
549 | int rc = 0; | |
550 | int bytes_returned; | |
3979877e | 551 | int i; |
3534b850 | 552 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
553 | u16 count; |
554 | ||
3534b850 JL |
555 | if (!server) { |
556 | WARN(1, "%s: server is NULL!\n", __func__); | |
557 | return -EIO; | |
1da177e4 | 558 | } |
3534b850 | 559 | |
1da177e4 LT |
560 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
561 | (void **) &pSMB, (void **) &pSMBr); | |
562 | if (rc) | |
563 | return rc; | |
750d1151 | 564 | |
88257360 | 565 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 566 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 567 | |
3f618223 | 568 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 569 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
570 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
571 | } | |
50c2f753 | 572 | |
3979877e | 573 | count = 0; |
50c2f753 | 574 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
575 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
576 | count += strlen(protocols[i].name) + 1; | |
577 | /* null at end of source and target buffers anyway */ | |
578 | } | |
be8e3b00 | 579 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
580 | pSMB->ByteCount = cpu_to_le16(count); |
581 | ||
582 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
583 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 584 | if (rc != 0) |
254e55ed SF |
585 | goto neg_err_exit; |
586 | ||
9bf67e51 | 587 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 588 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 589 | /* Check wct = 1 error case */ |
9bf67e51 | 590 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 591 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 592 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
593 | could not negotiate a common dialect */ |
594 | rc = -EOPNOTSUPP; | |
595 | goto neg_err_exit; | |
790fe579 | 596 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 597 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 598 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 599 | goto signing_check; |
790fe579 | 600 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
601 | /* unknown wct */ |
602 | rc = -EOPNOTSUPP; | |
603 | goto neg_err_exit; | |
604 | } | |
2190eca1 JL |
605 | /* else wct == 17, NTLM or better */ |
606 | ||
96daf2b0 SF |
607 | server->sec_mode = pSMBr->SecurityMode; |
608 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 609 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 610 | |
254e55ed SF |
611 | /* one byte, so no need to convert this or EncryptionKeyLen from |
612 | little endian */ | |
10b9b98e PS |
613 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
614 | cifs_max_pending); | |
45275789 | 615 | set_credits(server, server->maxReq); |
254e55ed | 616 | /* probably no need to store and check maxvcs */ |
c974befa | 617 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 618 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 619 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 620 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
621 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
622 | server->timeAdj *= 60; | |
31d9e2bd | 623 | |
e598d1d8 JL |
624 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
625 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 626 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 627 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
628 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
629 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 630 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 631 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 632 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 633 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
634 | } else { |
635 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 636 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 637 | } |
254e55ed SF |
638 | |
639 | signing_check: | |
9ddec561 | 640 | if (!rc) |
38d77c50 | 641 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 642 | neg_err_exit: |
4a6d87f1 | 643 | cifs_buf_release(pSMB); |
254e55ed | 644 | |
f96637be | 645 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
646 | return rc; |
647 | } | |
648 | ||
649 | int | |
2e6e02ab | 650 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
651 | { |
652 | struct smb_hdr *smb_buffer; | |
1da177e4 | 653 | int rc = 0; |
1da177e4 | 654 | |
f96637be | 655 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 656 | |
f1987b44 JL |
657 | /* BB: do we need to check this? These should never be NULL. */ |
658 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
659 | return -EIO; | |
1da177e4 | 660 | |
f1987b44 JL |
661 | /* |
662 | * No need to return error on this operation if tid invalidated and | |
663 | * closed on server already e.g. due to tcp session crashing. Also, | |
664 | * the tcon is no longer on the list, so no need to take lock before | |
665 | * checking this. | |
666 | */ | |
268875b9 | 667 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 668 | return 0; |
1da177e4 | 669 | |
50c2f753 | 670 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 671 | (void **)&smb_buffer); |
f1987b44 | 672 | if (rc) |
1da177e4 | 673 | return rc; |
133672ef | 674 | |
792af7b0 | 675 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 676 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 677 | if (rc) |
f96637be | 678 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 679 | |
50c2f753 | 680 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 681 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
682 | if (rc == -EAGAIN) |
683 | rc = 0; | |
684 | ||
685 | return rc; | |
686 | } | |
687 | ||
766fdbb5 JL |
688 | /* |
689 | * This is a no-op for now. We're not really interested in the reply, but | |
690 | * rather in the fact that the server sent one and that server->lstrp | |
691 | * gets updated. | |
692 | * | |
693 | * FIXME: maybe we should consider checking that the reply matches request? | |
694 | */ | |
695 | static void | |
696 | cifs_echo_callback(struct mid_q_entry *mid) | |
697 | { | |
698 | struct TCP_Server_Info *server = mid->callback_data; | |
699 | ||
700 | DeleteMidQEntry(mid); | |
a891f0f8 | 701 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
702 | } |
703 | ||
704 | int | |
705 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
706 | { | |
707 | ECHO_REQ *smb; | |
708 | int rc = 0; | |
738f9de5 PS |
709 | struct kvec iov[2]; |
710 | struct smb_rqst rqst = { .rq_iov = iov, | |
711 | .rq_nvec = 2 }; | |
766fdbb5 | 712 | |
f96637be | 713 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
714 | |
715 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
716 | if (rc) | |
717 | return rc; | |
718 | ||
26c9cb66 SF |
719 | if (server->capabilities & CAP_UNICODE) |
720 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
721 | ||
766fdbb5 | 722 | /* set up echo request */ |
5443d130 | 723 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
724 | smb->hdr.WordCount = 1; |
725 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 726 | put_bcc(1, &smb->hdr); |
766fdbb5 | 727 | smb->Data[0] = 'a'; |
be8e3b00 | 728 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
729 | |
730 | iov[0].iov_len = 4; | |
731 | iov[0].iov_base = smb; | |
732 | iov[1].iov_len = get_rfc1002_length(smb); | |
733 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 734 | |
9b7c18a2 | 735 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
a891f0f8 | 736 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 737 | if (rc) |
f96637be | 738 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
739 | |
740 | cifs_small_buf_release(smb); | |
741 | ||
742 | return rc; | |
743 | } | |
744 | ||
1da177e4 | 745 | int |
58c45c58 | 746 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 747 | { |
1da177e4 LT |
748 | LOGOFF_ANDX_REQ *pSMB; |
749 | int rc = 0; | |
1da177e4 | 750 | |
f96637be | 751 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 752 | |
14fbf50d JL |
753 | /* |
754 | * BB: do we need to check validity of ses and server? They should | |
755 | * always be valid since we have an active reference. If not, that | |
756 | * should probably be a BUG() | |
757 | */ | |
758 | if (!ses || !ses->server) | |
3b795210 SF |
759 | return -EIO; |
760 | ||
d7b619cf | 761 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
762 | if (ses->need_reconnect) |
763 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
764 | already closed due to reconnect */ | |
1da177e4 LT |
765 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
766 | if (rc) { | |
d7b619cf | 767 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
768 | return rc; |
769 | } | |
770 | ||
88257360 | 771 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 772 | |
38d77c50 JL |
773 | if (ses->server->sign) |
774 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
775 | |
776 | pSMB->hdr.Uid = ses->Suid; | |
777 | ||
778 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 779 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 780 | cifs_small_buf_release(pSMB); |
3b795210 | 781 | session_already_dead: |
d7b619cf | 782 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
783 | |
784 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 785 | since server closed smb session, no sense reporting |
1da177e4 LT |
786 | error */ |
787 | if (rc == -EAGAIN) | |
788 | rc = 0; | |
789 | return rc; | |
790 | } | |
791 | ||
2d785a50 | 792 | int |
6d5786a3 PS |
793 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
794 | const char *fileName, __u16 type, | |
795 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
796 | { |
797 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
798 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
799 | struct unlink_psx_rq *pRqD; | |
800 | int name_len; | |
801 | int rc = 0; | |
802 | int bytes_returned = 0; | |
803 | __u16 params, param_offset, offset, byte_count; | |
804 | ||
f96637be | 805 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
806 | PsxDelete: |
807 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
808 | (void **) &pSMBr); | |
809 | if (rc) | |
810 | return rc; | |
811 | ||
812 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
813 | name_len = | |
acbbb76a SF |
814 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
815 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
816 | name_len++; /* trailing null */ |
817 | name_len *= 2; | |
818 | } else { /* BB add path length overrun check */ | |
819 | name_len = strnlen(fileName, PATH_MAX); | |
820 | name_len++; /* trailing null */ | |
821 | strncpy(pSMB->FileName, fileName, name_len); | |
822 | } | |
823 | ||
824 | params = 6 + name_len; | |
825 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
826 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
827 | pSMB->MaxSetupCount = 0; | |
828 | pSMB->Reserved = 0; | |
829 | pSMB->Flags = 0; | |
830 | pSMB->Timeout = 0; | |
831 | pSMB->Reserved2 = 0; | |
832 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
833 | InformationLevel) - 4; | |
834 | offset = param_offset + params; | |
835 | ||
836 | /* Setup pointer to Request Data (inode type) */ | |
837 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
838 | pRqD->type = cpu_to_le16(type); | |
839 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
840 | pSMB->DataOffset = cpu_to_le16(offset); | |
841 | pSMB->SetupCount = 1; | |
842 | pSMB->Reserved3 = 0; | |
843 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
844 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
845 | ||
846 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
847 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
848 | pSMB->ParameterCount = cpu_to_le16(params); | |
849 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
850 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
851 | pSMB->Reserved4 = 0; | |
be8e3b00 | 852 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
853 | pSMB->ByteCount = cpu_to_le16(byte_count); |
854 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
855 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 856 | if (rc) |
f96637be | 857 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
858 | cifs_buf_release(pSMB); |
859 | ||
44c58186 | 860 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
861 | |
862 | if (rc == -EAGAIN) | |
863 | goto PsxDelete; | |
864 | ||
865 | return rc; | |
866 | } | |
867 | ||
1da177e4 | 868 | int |
ed6875e0 PS |
869 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
870 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
871 | { |
872 | DELETE_FILE_REQ *pSMB = NULL; | |
873 | DELETE_FILE_RSP *pSMBr = NULL; | |
874 | int rc = 0; | |
875 | int bytes_returned; | |
876 | int name_len; | |
2baa2682 | 877 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
878 | |
879 | DelFileRetry: | |
880 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
881 | (void **) &pSMBr); | |
882 | if (rc) | |
883 | return rc; | |
884 | ||
885 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
886 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
887 | PATH_MAX, cifs_sb->local_nls, | |
888 | remap); | |
1da177e4 LT |
889 | name_len++; /* trailing null */ |
890 | name_len *= 2; | |
09d1db5c | 891 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 892 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 893 | name_len++; /* trailing null */ |
ed6875e0 | 894 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
895 | } |
896 | pSMB->SearchAttributes = | |
897 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
898 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 899 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
900 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
901 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
902 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 903 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 904 | if (rc) |
f96637be | 905 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
906 | |
907 | cifs_buf_release(pSMB); | |
908 | if (rc == -EAGAIN) | |
909 | goto DelFileRetry; | |
910 | ||
911 | return rc; | |
912 | } | |
913 | ||
914 | int | |
f958ca5d PS |
915 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
916 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
917 | { |
918 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
919 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
920 | int rc = 0; | |
921 | int bytes_returned; | |
922 | int name_len; | |
2baa2682 | 923 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 924 | |
f96637be | 925 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
926 | RmDirRetry: |
927 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
928 | (void **) &pSMBr); | |
929 | if (rc) | |
930 | return rc; | |
931 | ||
932 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
933 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
934 | PATH_MAX, cifs_sb->local_nls, | |
935 | remap); | |
1da177e4 LT |
936 | name_len++; /* trailing null */ |
937 | name_len *= 2; | |
09d1db5c | 938 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 939 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 940 | name_len++; /* trailing null */ |
f958ca5d | 941 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
942 | } |
943 | ||
944 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 945 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
946 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
947 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
948 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 949 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 950 | if (rc) |
f96637be | 951 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
952 | |
953 | cifs_buf_release(pSMB); | |
954 | if (rc == -EAGAIN) | |
955 | goto RmDirRetry; | |
956 | return rc; | |
957 | } | |
958 | ||
959 | int | |
f436720e PS |
960 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
961 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
962 | { |
963 | int rc = 0; | |
964 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
965 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
966 | int bytes_returned; | |
967 | int name_len; | |
2baa2682 | 968 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 969 | |
f96637be | 970 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
971 | MkDirRetry: |
972 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
973 | (void **) &pSMBr); | |
974 | if (rc) | |
975 | return rc; | |
976 | ||
977 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 978 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
979 | PATH_MAX, cifs_sb->local_nls, |
980 | remap); | |
1da177e4 LT |
981 | name_len++; /* trailing null */ |
982 | name_len *= 2; | |
09d1db5c | 983 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
984 | name_len = strnlen(name, PATH_MAX); |
985 | name_len++; /* trailing null */ | |
986 | strncpy(pSMB->DirName, name, name_len); | |
987 | } | |
988 | ||
989 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 990 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
991 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
992 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
993 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 994 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 995 | if (rc) |
f96637be | 996 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 997 | |
1da177e4 LT |
998 | cifs_buf_release(pSMB); |
999 | if (rc == -EAGAIN) | |
1000 | goto MkDirRetry; | |
1001 | return rc; | |
1002 | } | |
1003 | ||
2dd29d31 | 1004 | int |
6d5786a3 PS |
1005 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1006 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1007 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1008 | const char *name, const struct nls_table *nls_codepage, | |
1009 | int remap) | |
2dd29d31 SF |
1010 | { |
1011 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1012 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1013 | int name_len; | |
1014 | int rc = 0; | |
1015 | int bytes_returned = 0; | |
2dd29d31 | 1016 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1017 | OPEN_PSX_REQ *pdata; |
1018 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1019 | |
f96637be | 1020 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1021 | PsxCreat: |
1022 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1023 | (void **) &pSMBr); | |
1024 | if (rc) | |
1025 | return rc; | |
1026 | ||
1027 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1028 | name_len = | |
acbbb76a SF |
1029 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1030 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1031 | name_len++; /* trailing null */ |
1032 | name_len *= 2; | |
1033 | } else { /* BB improve the check for buffer overruns BB */ | |
1034 | name_len = strnlen(name, PATH_MAX); | |
1035 | name_len++; /* trailing null */ | |
1036 | strncpy(pSMB->FileName, name, name_len); | |
1037 | } | |
1038 | ||
1039 | params = 6 + name_len; | |
1040 | count = sizeof(OPEN_PSX_REQ); | |
1041 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1042 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1043 | pSMB->MaxSetupCount = 0; | |
1044 | pSMB->Reserved = 0; | |
1045 | pSMB->Flags = 0; | |
1046 | pSMB->Timeout = 0; | |
1047 | pSMB->Reserved2 = 0; | |
1048 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1049 | InformationLevel) - 4; |
2dd29d31 | 1050 | offset = param_offset + params; |
2dd29d31 | 1051 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1052 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1053 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1054 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1055 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1056 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1057 | pSMB->DataOffset = cpu_to_le16(offset); | |
1058 | pSMB->SetupCount = 1; | |
1059 | pSMB->Reserved3 = 0; | |
1060 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1061 | byte_count = 3 /* pad */ + params + count; | |
1062 | ||
1063 | pSMB->DataCount = cpu_to_le16(count); | |
1064 | pSMB->ParameterCount = cpu_to_le16(params); | |
1065 | pSMB->TotalDataCount = pSMB->DataCount; | |
1066 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1067 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1068 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1069 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1070 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1071 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1072 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1073 | if (rc) { | |
f96637be | 1074 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1075 | goto psx_create_err; |
1076 | } | |
1077 | ||
f96637be | 1078 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1079 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1080 | ||
820a803f | 1081 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1082 | rc = -EIO; /* bad smb */ |
1083 | goto psx_create_err; | |
1084 | } | |
1085 | ||
1086 | /* copy return information to pRetData */ | |
50c2f753 | 1087 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1088 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1089 | |
2dd29d31 | 1090 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1091 | if (netfid) |
2dd29d31 SF |
1092 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1093 | /* Let caller know file was created so we can set the mode. */ | |
1094 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1095 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1096 | *pOplock |= CIFS_CREATE_ACTION; |
1097 | /* check to make sure response data is there */ | |
8f2376ad CG |
1098 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1099 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1100 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1101 | } else { |
820a803f | 1102 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1103 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1104 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1105 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1106 | goto psx_create_err; |
1107 | } | |
50c2f753 | 1108 | memcpy((char *) pRetData, |
cbac3cba | 1109 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1110 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1111 | } |
2dd29d31 SF |
1112 | |
1113 | psx_create_err: | |
1114 | cifs_buf_release(pSMB); | |
1115 | ||
65bc98b0 | 1116 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1117 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1118 | else |
44c58186 | 1119 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1120 | |
1121 | if (rc == -EAGAIN) | |
1122 | goto PsxCreat; | |
1123 | ||
50c2f753 | 1124 | return rc; |
2dd29d31 SF |
1125 | } |
1126 | ||
a9d02ad4 SF |
1127 | static __u16 convert_disposition(int disposition) |
1128 | { | |
1129 | __u16 ofun = 0; | |
1130 | ||
1131 | switch (disposition) { | |
1132 | case FILE_SUPERSEDE: | |
1133 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1134 | break; | |
1135 | case FILE_OPEN: | |
1136 | ofun = SMBOPEN_OAPPEND; | |
1137 | break; | |
1138 | case FILE_CREATE: | |
1139 | ofun = SMBOPEN_OCREATE; | |
1140 | break; | |
1141 | case FILE_OPEN_IF: | |
1142 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1143 | break; | |
1144 | case FILE_OVERWRITE: | |
1145 | ofun = SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | case FILE_OVERWRITE_IF: | |
1148 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1149 | break; | |
1150 | default: | |
f96637be | 1151 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1152 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1153 | } | |
1154 | return ofun; | |
1155 | } | |
1156 | ||
35fc37d5 JL |
1157 | static int |
1158 | access_flags_to_smbopen_mode(const int access_flags) | |
1159 | { | |
1160 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1161 | ||
1162 | if (masked_flags == GENERIC_READ) | |
1163 | return SMBOPEN_READ; | |
1164 | else if (masked_flags == GENERIC_WRITE) | |
1165 | return SMBOPEN_WRITE; | |
1166 | ||
1167 | /* just go for read/write */ | |
1168 | return SMBOPEN_READWRITE; | |
1169 | } | |
1170 | ||
a9d02ad4 | 1171 | int |
6d5786a3 | 1172 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1173 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1174 | const int access_flags, const int create_options, __u16 *netfid, |
1175 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1176 | const struct nls_table *nls_codepage, int remap) |
1177 | { | |
1178 | int rc = -EACCES; | |
1179 | OPENX_REQ *pSMB = NULL; | |
1180 | OPENX_RSP *pSMBr = NULL; | |
1181 | int bytes_returned; | |
1182 | int name_len; | |
1183 | __u16 count; | |
1184 | ||
1185 | OldOpenRetry: | |
1186 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1187 | (void **) &pSMBr); | |
1188 | if (rc) | |
1189 | return rc; | |
1190 | ||
1191 | pSMB->AndXCommand = 0xFF; /* none */ | |
1192 | ||
1193 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1194 | count = 1; /* account for one byte pad to word boundary */ | |
1195 | name_len = | |
acbbb76a SF |
1196 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1197 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1198 | name_len++; /* trailing null */ |
1199 | name_len *= 2; | |
1200 | } else { /* BB improve check for buffer overruns BB */ | |
1201 | count = 0; /* no pad */ | |
1202 | name_len = strnlen(fileName, PATH_MAX); | |
1203 | name_len++; /* trailing null */ | |
1204 | strncpy(pSMB->fileName, fileName, name_len); | |
1205 | } | |
1206 | if (*pOplock & REQ_OPLOCK) | |
1207 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1208 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1209 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1210 | |
a9d02ad4 | 1211 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1212 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1213 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1214 | /* set file as system file if special file such | |
1215 | as fifo and server expecting SFU style and | |
1216 | no Unix extensions */ | |
1217 | ||
790fe579 SF |
1218 | if (create_options & CREATE_OPTION_SPECIAL) |
1219 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1220 | else /* BB FIXME BB */ |
1221 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1222 | |
67750fb9 JL |
1223 | if (create_options & CREATE_OPTION_READONLY) |
1224 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1225 | |
1226 | /* BB FIXME BB */ | |
50c2f753 SF |
1227 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1228 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1229 | /* BB FIXME END BB */ |
3e87d803 SF |
1230 | |
1231 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1232 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1233 | count += name_len; |
be8e3b00 | 1234 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1235 | |
1236 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1237 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1238 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1239 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1240 | if (rc) { |
f96637be | 1241 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1242 | } else { |
1243 | /* BB verify if wct == 15 */ | |
1244 | ||
582d21e5 | 1245 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1246 | |
1247 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1248 | /* Let caller know file was created so we can set the mode. */ | |
1249 | /* Do we care about the CreateAction in any other cases? */ | |
1250 | /* BB FIXME BB */ | |
790fe579 | 1251 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1252 | *pOplock |= CIFS_CREATE_ACTION; */ |
1253 | /* BB FIXME END */ | |
1254 | ||
790fe579 | 1255 | if (pfile_info) { |
a9d02ad4 SF |
1256 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1257 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1258 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1259 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1260 | pfile_info->Attributes = |
50c2f753 | 1261 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1262 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1263 | pfile_info->AllocationSize = |
1264 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1265 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1266 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1267 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1268 | } |
1269 | } | |
1270 | ||
1271 | cifs_buf_release(pSMB); | |
1272 | if (rc == -EAGAIN) | |
1273 | goto OldOpenRetry; | |
1274 | return rc; | |
1275 | } | |
1276 | ||
1da177e4 | 1277 | int |
d81b8a40 PS |
1278 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1279 | FILE_ALL_INFO *buf) | |
1da177e4 LT |
1280 | { |
1281 | int rc = -EACCES; | |
9bf4fa01 PS |
1282 | OPEN_REQ *req = NULL; |
1283 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1284 | int bytes_returned; |
1285 | int name_len; | |
1286 | __u16 count; | |
d81b8a40 PS |
1287 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1288 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1289 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1290 | const struct nls_table *nls = cifs_sb->local_nls; |
1291 | int create_options = oparms->create_options; | |
1292 | int desired_access = oparms->desired_access; | |
1293 | int disposition = oparms->disposition; | |
1294 | const char *path = oparms->path; | |
1da177e4 LT |
1295 | |
1296 | openRetry: | |
9bf4fa01 PS |
1297 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1298 | (void **)&rsp); | |
1da177e4 LT |
1299 | if (rc) |
1300 | return rc; | |
1301 | ||
9bf4fa01 PS |
1302 | /* no commands go after this */ |
1303 | req->AndXCommand = 0xFF; | |
1da177e4 | 1304 | |
9bf4fa01 PS |
1305 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1306 | /* account for one byte pad to word boundary */ | |
1307 | count = 1; | |
1308 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1309 | path, PATH_MAX, nls, remap); | |
1310 | /* trailing null */ | |
1311 | name_len++; | |
1da177e4 | 1312 | name_len *= 2; |
9bf4fa01 PS |
1313 | req->NameLength = cpu_to_le16(name_len); |
1314 | } else { | |
1315 | /* BB improve check for buffer overruns BB */ | |
1316 | /* no pad */ | |
1317 | count = 0; | |
1318 | name_len = strnlen(path, PATH_MAX); | |
1319 | /* trailing null */ | |
1320 | name_len++; | |
1321 | req->NameLength = cpu_to_le16(name_len); | |
1322 | strncpy(req->fileName, path, name_len); | |
1da177e4 | 1323 | } |
9bf4fa01 PS |
1324 | |
1325 | if (*oplock & REQ_OPLOCK) | |
1326 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1327 | else if (*oplock & REQ_BATCHOPLOCK) | |
1328 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1329 | ||
1330 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1331 | req->AllocationSize = 0; | |
1332 | ||
1333 | /* | |
1334 | * Set file as system file if special file such as fifo and server | |
1335 | * expecting SFU style and no Unix extensions. | |
1336 | */ | |
790fe579 | 1337 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1338 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1339 | else |
9bf4fa01 | 1340 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1341 | |
9bf4fa01 PS |
1342 | /* |
1343 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1344 | * sensitive checks for other servers such as Samba. | |
1345 | */ | |
1da177e4 | 1346 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1347 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1348 | |
67750fb9 | 1349 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1350 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1351 | ||
1352 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1353 | req->CreateDisposition = cpu_to_le32(disposition); | |
1354 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1355 | |
09d1db5c | 1356 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1357 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1358 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1359 | |
1360 | count += name_len; | |
9bf4fa01 | 1361 | inc_rfc1001_len(req, count); |
1da177e4 | 1362 | |
9bf4fa01 PS |
1363 | req->ByteCount = cpu_to_le16(count); |
1364 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1365 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1366 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1367 | if (rc) { |
f96637be | 1368 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1369 | cifs_buf_release(req); |
1370 | if (rc == -EAGAIN) | |
1371 | goto openRetry; | |
1372 | return rc; | |
1da177e4 | 1373 | } |
a5a2b489 | 1374 | |
9bf4fa01 PS |
1375 | /* 1 byte no need to le_to_cpu */ |
1376 | *oplock = rsp->OplockLevel; | |
1377 | /* cifs fid stays in le */ | |
d81b8a40 | 1378 | oparms->fid->netfid = rsp->Fid; |
9bf4fa01 PS |
1379 | |
1380 | /* Let caller know file was created so we can set the mode. */ | |
1381 | /* Do we care about the CreateAction in any other cases? */ | |
1382 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1383 | *oplock |= CIFS_CREATE_ACTION; | |
1384 | ||
1385 | if (buf) { | |
1386 | /* copy from CreationTime to Attributes */ | |
1387 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1388 | /* the file_info buf is endian converted by caller */ | |
1389 | buf->AllocationSize = rsp->AllocationSize; | |
1390 | buf->EndOfFile = rsp->EndOfFile; | |
1391 | buf->NumberOfLinks = cpu_to_le32(1); | |
1392 | buf->DeletePending = 0; | |
1393 | } | |
1394 | ||
1395 | cifs_buf_release(req); | |
1da177e4 LT |
1396 | return rc; |
1397 | } | |
1398 | ||
e28bc5b1 JL |
1399 | /* |
1400 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1401 | * current bigbuf. | |
1402 | */ | |
c42a6abe | 1403 | int |
350be257 | 1404 | cifs_discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1405 | { |
350be257 | 1406 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 | 1407 | int remaining = rfclen + 4 - server->total_read; |
e28bc5b1 JL |
1408 | |
1409 | while (remaining > 0) { | |
1410 | int length; | |
1411 | ||
1412 | length = cifs_read_from_socket(server, server->bigbuf, | |
1413 | min_t(unsigned int, remaining, | |
1887f601 | 1414 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1415 | if (length < 0) |
1416 | return length; | |
1417 | server->total_read += length; | |
1418 | remaining -= length; | |
1419 | } | |
1420 | ||
e28bc5b1 JL |
1421 | return 0; |
1422 | } | |
1423 | ||
6cc3b242 PS |
1424 | static int |
1425 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1426 | { | |
1427 | int length; | |
1428 | struct cifs_readdata *rdata = mid->callback_data; | |
1429 | ||
350be257 | 1430 | length = cifs_discard_remaining_data(server); |
6cc3b242 | 1431 | dequeue_mid(mid, rdata->result); |
350be257 PS |
1432 | mid->resp_buf = server->smallbuf; |
1433 | server->smallbuf = NULL; | |
6cc3b242 PS |
1434 | return length; |
1435 | } | |
1436 | ||
09a4707e | 1437 | int |
e28bc5b1 JL |
1438 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1439 | { | |
1440 | int length, len; | |
8d5ce4d2 | 1441 | unsigned int data_offset, data_len; |
e28bc5b1 | 1442 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1443 | char *buf = server->smallbuf; |
1444 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1445 | |
f96637be JP |
1446 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1447 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1448 | |
1449 | /* | |
1450 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1451 | * can if there's not enough data. At this point, we've read down to | |
1452 | * the Mid. | |
1453 | */ | |
eb378711 | 1454 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1455 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1456 | |
a6137305 AV |
1457 | length = cifs_read_from_socket(server, |
1458 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1459 | if (length < 0) |
1460 | return length; | |
1461 | server->total_read += length; | |
1462 | ||
511c54a2 PS |
1463 | if (server->ops->is_session_expired && |
1464 | server->ops->is_session_expired(buf)) { | |
1465 | cifs_reconnect(server); | |
1466 | wake_up(&server->response_q); | |
1467 | return -1; | |
1468 | } | |
1469 | ||
6cc3b242 PS |
1470 | if (server->ops->is_status_pending && |
1471 | server->ops->is_status_pending(buf, server, 0)) { | |
350be257 | 1472 | cifs_discard_remaining_data(server); |
6cc3b242 PS |
1473 | return -1; |
1474 | } | |
1475 | ||
e28bc5b1 | 1476 | /* Was the SMB read successful? */ |
eb378711 | 1477 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1478 | if (rdata->result != 0) { |
f96637be JP |
1479 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1480 | __func__, rdata->result); | |
e28bc5b1 JL |
1481 | return cifs_readv_discard(server, mid); |
1482 | } | |
1483 | ||
1484 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1485 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1486 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1487 | __func__, server->total_read, | |
1488 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1489 | rdata->result = -EIO; |
1490 | return cifs_readv_discard(server, mid); | |
1491 | } | |
1492 | ||
eb378711 | 1493 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1494 | if (data_offset < server->total_read) { |
1495 | /* | |
1496 | * win2k8 sometimes sends an offset of 0 when the read | |
1497 | * is beyond the EOF. Treat it as if the data starts just after | |
1498 | * the header. | |
1499 | */ | |
f96637be JP |
1500 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1501 | __func__, data_offset); | |
e28bc5b1 JL |
1502 | data_offset = server->total_read; |
1503 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1504 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1505 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1506 | __func__, data_offset); | |
e28bc5b1 JL |
1507 | rdata->result = -EIO; |
1508 | return cifs_readv_discard(server, mid); | |
1509 | } | |
1510 | ||
f96637be JP |
1511 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1512 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1513 | |
1514 | len = data_offset - server->total_read; | |
1515 | if (len > 0) { | |
1516 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1517 | length = cifs_read_from_socket(server, |
1518 | buf + server->total_read, len); | |
e28bc5b1 JL |
1519 | if (length < 0) |
1520 | return length; | |
1521 | server->total_read += length; | |
1522 | } | |
1523 | ||
1524 | /* set up first iov for signature check */ | |
738f9de5 PS |
1525 | rdata->iov[0].iov_base = buf; |
1526 | rdata->iov[0].iov_len = 4; | |
1527 | rdata->iov[1].iov_base = buf + 4; | |
1528 | rdata->iov[1].iov_len = server->total_read - 4; | |
1529 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n", | |
1530 | rdata->iov[0].iov_base, server->total_read); | |
e28bc5b1 JL |
1531 | |
1532 | /* how much data is in the response? */ | |
eb378711 | 1533 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1534 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1535 | /* data_len is corrupt -- discard frame */ |
1536 | rdata->result = -EIO; | |
1537 | return cifs_readv_discard(server, mid); | |
1538 | } | |
1539 | ||
8321fec4 JL |
1540 | length = rdata->read_into_pages(server, rdata, data_len); |
1541 | if (length < 0) | |
1542 | return length; | |
e28bc5b1 | 1543 | |
8321fec4 | 1544 | server->total_read += length; |
e28bc5b1 | 1545 | |
f96637be JP |
1546 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1547 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1548 | |
1549 | /* discard anything left over */ | |
5ffef7bf | 1550 | if (server->total_read < buflen) |
e28bc5b1 JL |
1551 | return cifs_readv_discard(server, mid); |
1552 | ||
1553 | dequeue_mid(mid, false); | |
350be257 PS |
1554 | mid->resp_buf = server->smallbuf; |
1555 | server->smallbuf = NULL; | |
e28bc5b1 JL |
1556 | return length; |
1557 | } | |
1558 | ||
e28bc5b1 JL |
1559 | static void |
1560 | cifs_readv_callback(struct mid_q_entry *mid) | |
1561 | { | |
1562 | struct cifs_readdata *rdata = mid->callback_data; | |
1563 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1564 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1565 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1566 | .rq_nvec = 2, | |
8321fec4 JL |
1567 | .rq_pages = rdata->pages, |
1568 | .rq_npages = rdata->nr_pages, | |
1569 | .rq_pagesz = rdata->pagesz, | |
1570 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1571 | |
f96637be JP |
1572 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1573 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1574 | rdata->bytes); | |
e28bc5b1 | 1575 | |
7c9421e1 | 1576 | switch (mid->mid_state) { |
e28bc5b1 JL |
1577 | case MID_RESPONSE_RECEIVED: |
1578 | /* result already set, check signature */ | |
38d77c50 | 1579 | if (server->sign) { |
985e4ff0 SF |
1580 | int rc = 0; |
1581 | ||
bf5ea0e2 | 1582 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1583 | mid->sequence_number); |
985e4ff0 | 1584 | if (rc) |
f96637be JP |
1585 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1586 | rc); | |
e28bc5b1 JL |
1587 | } |
1588 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1589 | task_io_account_read(rdata->got_bytes); |
1590 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1591 | break; |
1592 | case MID_REQUEST_SUBMITTED: | |
1593 | case MID_RETRY_NEEDED: | |
1594 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1595 | if (server->sign && rdata->got_bytes) |
1596 | /* reset bytes number since we can not check a sign */ | |
1597 | rdata->got_bytes = 0; | |
1598 | /* FIXME: should this be counted toward the initiating task? */ | |
1599 | task_io_account_read(rdata->got_bytes); | |
1600 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1601 | break; |
1602 | default: | |
1603 | rdata->result = -EIO; | |
1604 | } | |
1605 | ||
da472fc8 | 1606 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1607 | DeleteMidQEntry(mid); |
a891f0f8 | 1608 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1609 | } |
1610 | ||
1611 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1612 | int | |
1613 | cifs_async_readv(struct cifs_readdata *rdata) | |
1614 | { | |
1615 | int rc; | |
1616 | READ_REQ *smb = NULL; | |
1617 | int wct; | |
1618 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1619 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1620 | .rq_nvec = 2 }; | |
e28bc5b1 | 1621 | |
f96637be JP |
1622 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1623 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1624 | |
1625 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1626 | wct = 12; | |
1627 | else { | |
1628 | wct = 10; /* old style read */ | |
1629 | if ((rdata->offset >> 32) > 0) { | |
1630 | /* can not handle this big offset for old */ | |
1631 | return -EIO; | |
1632 | } | |
1633 | } | |
1634 | ||
1635 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1636 | if (rc) | |
1637 | return rc; | |
1638 | ||
1639 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1640 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1641 | ||
1642 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1643 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1644 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1645 | if (wct == 12) | |
1646 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1647 | smb->Remaining = 0; | |
1648 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1649 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1650 | if (wct == 12) | |
1651 | smb->ByteCount = 0; | |
1652 | else { | |
1653 | /* old style read */ | |
1654 | struct smb_com_readx_req *smbr = | |
1655 | (struct smb_com_readx_req *)smb; | |
1656 | smbr->ByteCount = 0; | |
1657 | } | |
1658 | ||
1659 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1660 | rdata->iov[0].iov_base = smb; |
1661 | rdata->iov[0].iov_len = 4; | |
1662 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1663 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1664 | |
6993f74a | 1665 | kref_get(&rdata->refcount); |
fec344e3 | 1666 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
9b7c18a2 | 1667 | cifs_readv_callback, NULL, rdata, 0); |
e28bc5b1 JL |
1668 | |
1669 | if (rc == 0) | |
44c58186 | 1670 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1671 | else |
1672 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1673 | |
1674 | cifs_small_buf_release(smb); | |
1675 | return rc; | |
1676 | } | |
1677 | ||
1da177e4 | 1678 | int |
6d5786a3 PS |
1679 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1680 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1681 | { |
1682 | int rc = -EACCES; | |
1683 | READ_REQ *pSMB = NULL; | |
1684 | READ_RSP *pSMBr = NULL; | |
1685 | char *pReadData = NULL; | |
bfa0d75a | 1686 | int wct; |
ec637e3f SF |
1687 | int resp_buf_type = 0; |
1688 | struct kvec iov[1]; | |
da502f7d | 1689 | struct kvec rsp_iov; |
d4ffff1f PS |
1690 | __u32 pid = io_parms->pid; |
1691 | __u16 netfid = io_parms->netfid; | |
1692 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1693 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1694 | unsigned int count = io_parms->length; |
1da177e4 | 1695 | |
f96637be | 1696 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1697 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1698 | wct = 12; |
4c3130ef | 1699 | else { |
bfa0d75a | 1700 | wct = 10; /* old style read */ |
d4ffff1f | 1701 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1702 | /* can not handle this big offset for old */ |
1703 | return -EIO; | |
1704 | } | |
1705 | } | |
1da177e4 LT |
1706 | |
1707 | *nbytes = 0; | |
ec637e3f | 1708 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1709 | if (rc) |
1710 | return rc; | |
1711 | ||
d4ffff1f PS |
1712 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1713 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1714 | ||
1da177e4 LT |
1715 | /* tcon and ses pointer are checked in smb_init */ |
1716 | if (tcon->ses->server == NULL) | |
1717 | return -ECONNABORTED; | |
1718 | ||
ec637e3f | 1719 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1720 | pSMB->Fid = netfid; |
d4ffff1f | 1721 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1722 | if (wct == 12) |
d4ffff1f | 1723 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1724 | |
1da177e4 LT |
1725 | pSMB->Remaining = 0; |
1726 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1727 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1728 | if (wct == 12) |
bfa0d75a SF |
1729 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1730 | else { | |
1731 | /* old style read */ | |
50c2f753 | 1732 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1733 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1734 | pSMBW->ByteCount = 0; |
bfa0d75a | 1735 | } |
ec637e3f SF |
1736 | |
1737 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1738 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1739 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1740 | CIFS_LOG_ERROR, &rsp_iov); | |
1741 | cifs_small_buf_release(pSMB); | |
44c58186 | 1742 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1743 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1744 | if (rc) { |
f96637be | 1745 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1746 | } else { |
1747 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1748 | data_length = data_length << 16; | |
1749 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1750 | *nbytes = data_length; | |
1751 | ||
1752 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1753 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1754 | || (data_length > count)) { |
f96637be | 1755 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1756 | data_length, count); |
1da177e4 LT |
1757 | rc = -EIO; |
1758 | *nbytes = 0; | |
1759 | } else { | |
ec637e3f | 1760 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1761 | le16_to_cpu(pSMBr->DataOffset); |
1762 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1763 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1764 | rc = -EFAULT; |
26f57364 | 1765 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1766 | if (*buf) |
50c2f753 | 1767 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1768 | } |
1769 | } | |
1da177e4 | 1770 | |
790fe579 | 1771 | if (*buf) { |
da502f7d | 1772 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1773 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1774 | /* return buffer to caller to free */ |
da502f7d | 1775 | *buf = rsp_iov.iov_base; |
790fe579 | 1776 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1777 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1778 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1779 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1780 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1781 | |
1782 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1783 | since file handle passed in no longer valid */ |
1784 | return rc; | |
1785 | } | |
1786 | ||
ec637e3f | 1787 | |
1da177e4 | 1788 | int |
6d5786a3 | 1789 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1790 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1791 | { |
1792 | int rc = -EACCES; | |
1793 | WRITE_REQ *pSMB = NULL; | |
1794 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1795 | int bytes_returned, wct; |
1da177e4 LT |
1796 | __u32 bytes_sent; |
1797 | __u16 byte_count; | |
fa2989f4 PS |
1798 | __u32 pid = io_parms->pid; |
1799 | __u16 netfid = io_parms->netfid; | |
1800 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1801 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1802 | unsigned int count = io_parms->length; |
1da177e4 | 1803 | |
a24e2d7d SF |
1804 | *nbytes = 0; |
1805 | ||
f96637be | 1806 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1807 | if (tcon->ses == NULL) |
1c955187 SF |
1808 | return -ECONNABORTED; |
1809 | ||
790fe579 | 1810 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1811 | wct = 14; |
4c3130ef | 1812 | else { |
1c955187 | 1813 | wct = 12; |
4c3130ef SF |
1814 | if ((offset >> 32) > 0) { |
1815 | /* can not handle big offset for old srv */ | |
1816 | return -EIO; | |
1817 | } | |
1818 | } | |
1c955187 SF |
1819 | |
1820 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1821 | (void **) &pSMBr); |
1822 | if (rc) | |
1823 | return rc; | |
fa2989f4 PS |
1824 | |
1825 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1826 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1827 | ||
1da177e4 LT |
1828 | /* tcon and ses pointer are checked in smb_init */ |
1829 | if (tcon->ses->server == NULL) | |
1830 | return -ECONNABORTED; | |
1831 | ||
1832 | pSMB->AndXCommand = 0xFF; /* none */ | |
1833 | pSMB->Fid = netfid; | |
1834 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1835 | if (wct == 14) |
1c955187 | 1836 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1837 | |
1da177e4 LT |
1838 | pSMB->Reserved = 0xFFFFFFFF; |
1839 | pSMB->WriteMode = 0; | |
1840 | pSMB->Remaining = 0; | |
1841 | ||
50c2f753 | 1842 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1843 | can send more if LARGE_WRITE_X capability returned by the server and if |
1844 | our buffer is big enough or if we convert to iovecs on socket writes | |
1845 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1846 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1847 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1848 | } else { | |
1849 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1850 | & ~0xFF; | |
1851 | } | |
1852 | ||
1853 | if (bytes_sent > count) | |
1854 | bytes_sent = count; | |
1855 | pSMB->DataOffset = | |
50c2f753 | 1856 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1857 | if (buf) |
61e74801 | 1858 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1859 | else if (count != 0) { |
1da177e4 LT |
1860 | /* No buffer */ |
1861 | cifs_buf_release(pSMB); | |
1862 | return -EINVAL; | |
e30dcf3a | 1863 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1864 | if (wct == 14) |
e30dcf3a | 1865 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1866 | else /* wct == 12 */ |
e30dcf3a | 1867 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1868 | |
1da177e4 LT |
1869 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1870 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1871 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1872 | |
790fe579 | 1873 | if (wct == 14) |
1c955187 | 1874 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1875 | else { /* old style write has byte count 4 bytes earlier |
1876 | so 4 bytes pad */ | |
1877 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1878 | (struct smb_com_writex_req *)pSMB; |
1879 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1880 | } | |
1da177e4 LT |
1881 | |
1882 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1883 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1884 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1885 | if (rc) { |
f96637be | 1886 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1887 | } else { |
1888 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1889 | *nbytes = (*nbytes) << 16; | |
1890 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1891 | |
1892 | /* | |
1893 | * Mask off high 16 bits when bytes written as returned by the | |
1894 | * server is greater than bytes requested by the client. Some | |
1895 | * OS/2 servers are known to set incorrect CountHigh values. | |
1896 | */ | |
1897 | if (*nbytes > count) | |
1898 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1899 | } |
1900 | ||
1901 | cifs_buf_release(pSMB); | |
1902 | ||
50c2f753 | 1903 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1904 | since file handle passed in no longer valid */ |
1905 | ||
1906 | return rc; | |
1907 | } | |
1908 | ||
c28c89fc JL |
1909 | void |
1910 | cifs_writedata_release(struct kref *refcount) | |
1911 | { | |
1912 | struct cifs_writedata *wdata = container_of(refcount, | |
1913 | struct cifs_writedata, refcount); | |
1914 | ||
1915 | if (wdata->cfile) | |
1916 | cifsFileInfo_put(wdata->cfile); | |
1917 | ||
1918 | kfree(wdata); | |
1919 | } | |
1920 | ||
1921 | /* | |
1922 | * Write failed with a retryable error. Resend the write request. It's also | |
1923 | * possible that the page was redirtied so re-clean the page. | |
1924 | */ | |
1925 | static void | |
1926 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1927 | { | |
7f6c5008 | 1928 | int i, rc = 0; |
2b0143b5 | 1929 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 1930 | struct TCP_Server_Info *server; |
7f6c5008 | 1931 | unsigned int rest_len; |
c28c89fc | 1932 | |
7f6c5008 PS |
1933 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1934 | i = 0; | |
1935 | rest_len = wdata->bytes; | |
c28c89fc | 1936 | do { |
7f6c5008 PS |
1937 | struct cifs_writedata *wdata2; |
1938 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
1939 | ||
1940 | wsize = server->ops->wp_retry_size(inode); | |
1941 | if (wsize < rest_len) { | |
09cbfeaf | 1942 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
1943 | if (!nr_pages) { |
1944 | rc = -ENOTSUPP; | |
1945 | break; | |
1946 | } | |
09cbfeaf KS |
1947 | cur_len = nr_pages * PAGE_SIZE; |
1948 | tailsz = PAGE_SIZE; | |
7f6c5008 | 1949 | } else { |
09cbfeaf | 1950 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 1951 | cur_len = rest_len; |
09cbfeaf | 1952 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 1953 | } |
c28c89fc | 1954 | |
7f6c5008 PS |
1955 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
1956 | if (!wdata2) { | |
1957 | rc = -ENOMEM; | |
1958 | break; | |
c51bb0ea | 1959 | } |
7f6c5008 PS |
1960 | |
1961 | for (j = 0; j < nr_pages; j++) { | |
1962 | wdata2->pages[j] = wdata->pages[i + j]; | |
1963 | lock_page(wdata2->pages[j]); | |
1964 | clear_page_dirty_for_io(wdata2->pages[j]); | |
1965 | } | |
1966 | ||
1967 | wdata2->sync_mode = wdata->sync_mode; | |
1968 | wdata2->nr_pages = nr_pages; | |
1969 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 1970 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
1971 | wdata2->tailsz = tailsz; |
1972 | wdata2->bytes = cur_len; | |
1973 | ||
1974 | wdata2->cfile = find_writable_file(CIFS_I(inode), false); | |
1975 | if (!wdata2->cfile) { | |
1976 | cifs_dbg(VFS, "No writable handles for inode\n"); | |
1977 | rc = -EBADF; | |
1978 | break; | |
1979 | } | |
1980 | wdata2->pid = wdata2->cfile->pid; | |
1981 | rc = server->ops->async_writev(wdata2, cifs_writedata_release); | |
1982 | ||
1983 | for (j = 0; j < nr_pages; j++) { | |
1984 | unlock_page(wdata2->pages[j]); | |
1985 | if (rc != 0 && rc != -EAGAIN) { | |
1986 | SetPageError(wdata2->pages[j]); | |
1987 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 1988 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
1989 | } |
1990 | } | |
1991 | ||
1992 | if (rc) { | |
1993 | kref_put(&wdata2->refcount, cifs_writedata_release); | |
1994 | if (rc == -EAGAIN) | |
1995 | continue; | |
1996 | break; | |
1997 | } | |
1998 | ||
1999 | rest_len -= cur_len; | |
2000 | i += nr_pages; | |
2001 | } while (i < wdata->nr_pages); | |
c28c89fc JL |
2002 | |
2003 | mapping_set_error(inode->i_mapping, rc); | |
2004 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2005 | } | |
2006 | ||
c2e87640 | 2007 | void |
c28c89fc JL |
2008 | cifs_writev_complete(struct work_struct *work) |
2009 | { | |
2010 | struct cifs_writedata *wdata = container_of(work, | |
2011 | struct cifs_writedata, work); | |
2b0143b5 | 2012 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
2013 | int i = 0; |
2014 | ||
2015 | if (wdata->result == 0) { | |
597b027f | 2016 | spin_lock(&inode->i_lock); |
c28c89fc | 2017 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2018 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2019 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2020 | wdata->bytes); | |
2021 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2022 | return cifs_writev_requeue(wdata); | |
2023 | ||
2024 | for (i = 0; i < wdata->nr_pages; i++) { | |
2025 | struct page *page = wdata->pages[i]; | |
2026 | if (wdata->result == -EAGAIN) | |
2027 | __set_page_dirty_nobuffers(page); | |
2028 | else if (wdata->result < 0) | |
2029 | SetPageError(page); | |
2030 | end_page_writeback(page); | |
09cbfeaf | 2031 | put_page(page); |
c28c89fc JL |
2032 | } |
2033 | if (wdata->result != -EAGAIN) | |
2034 | mapping_set_error(inode->i_mapping, wdata->result); | |
2035 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2036 | } | |
2037 | ||
2038 | struct cifs_writedata * | |
c2e87640 | 2039 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
2040 | { |
2041 | struct cifs_writedata *wdata; | |
2042 | ||
c28c89fc JL |
2043 | /* writedata + number of page pointers */ |
2044 | wdata = kzalloc(sizeof(*wdata) + | |
26c8f0d6 | 2045 | sizeof(struct page *) * nr_pages, GFP_NOFS); |
c28c89fc | 2046 | if (wdata != NULL) { |
c28c89fc | 2047 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2048 | INIT_LIST_HEAD(&wdata->list); |
2049 | init_completion(&wdata->done); | |
2050 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2051 | } |
2052 | return wdata; | |
2053 | } | |
2054 | ||
2055 | /* | |
7c9421e1 | 2056 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2057 | * workqueue completion task. |
2058 | */ | |
2059 | static void | |
2060 | cifs_writev_callback(struct mid_q_entry *mid) | |
2061 | { | |
2062 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2063 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2064 | unsigned int written; |
2065 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2066 | ||
7c9421e1 | 2067 | switch (mid->mid_state) { |
c28c89fc JL |
2068 | case MID_RESPONSE_RECEIVED: |
2069 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2070 | if (wdata->result != 0) | |
2071 | break; | |
2072 | ||
2073 | written = le16_to_cpu(smb->CountHigh); | |
2074 | written <<= 16; | |
2075 | written += le16_to_cpu(smb->Count); | |
2076 | /* | |
2077 | * Mask off high 16 bits when bytes written as returned | |
2078 | * by the server is greater than bytes requested by the | |
2079 | * client. OS/2 servers are known to set incorrect | |
2080 | * CountHigh values. | |
2081 | */ | |
2082 | if (written > wdata->bytes) | |
2083 | written &= 0xFFFF; | |
2084 | ||
2085 | if (written < wdata->bytes) | |
2086 | wdata->result = -ENOSPC; | |
2087 | else | |
2088 | wdata->bytes = written; | |
2089 | break; | |
2090 | case MID_REQUEST_SUBMITTED: | |
2091 | case MID_RETRY_NEEDED: | |
2092 | wdata->result = -EAGAIN; | |
2093 | break; | |
2094 | default: | |
2095 | wdata->result = -EIO; | |
2096 | break; | |
2097 | } | |
2098 | ||
da472fc8 | 2099 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2100 | DeleteMidQEntry(mid); |
a891f0f8 | 2101 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2102 | } |
2103 | ||
2104 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2105 | int | |
4a5c80d7 SF |
2106 | cifs_async_writev(struct cifs_writedata *wdata, |
2107 | void (*release)(struct kref *kref)) | |
c28c89fc | 2108 | { |
eddb079d | 2109 | int rc = -EACCES; |
c28c89fc JL |
2110 | WRITE_REQ *smb = NULL; |
2111 | int wct; | |
96daf2b0 | 2112 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 2113 | struct kvec iov[2]; |
fec344e3 | 2114 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2115 | |
2116 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2117 | wct = 14; | |
2118 | } else { | |
2119 | wct = 12; | |
2120 | if (wdata->offset >> 32 > 0) { | |
2121 | /* can not handle big offset for old srv */ | |
2122 | return -EIO; | |
2123 | } | |
2124 | } | |
2125 | ||
2126 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2127 | if (rc) | |
2128 | goto async_writev_out; | |
2129 | ||
fe5f5d2e JL |
2130 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2131 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2132 | |
c28c89fc | 2133 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2134 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2135 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2136 | if (wct == 14) | |
2137 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2138 | smb->Reserved = 0xFFFFFFFF; | |
2139 | smb->WriteMode = 0; | |
2140 | smb->Remaining = 0; | |
2141 | ||
2142 | smb->DataOffset = | |
2143 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2144 | ||
2145 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
2146 | iov[0].iov_len = 4; |
2147 | iov[0].iov_base = smb; | |
2148 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
2149 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 2150 | |
738f9de5 PS |
2151 | rqst.rq_iov = iov; |
2152 | rqst.rq_nvec = 2; | |
eddb079d JL |
2153 | rqst.rq_pages = wdata->pages; |
2154 | rqst.rq_npages = wdata->nr_pages; | |
2155 | rqst.rq_pagesz = wdata->pagesz; | |
2156 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2157 | |
f96637be JP |
2158 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2159 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2160 | |
2161 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2162 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2163 | ||
2164 | if (wct == 14) { | |
2165 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2166 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2167 | } else { | |
2168 | /* wct == 12 */ | |
2169 | struct smb_com_writex_req *smbw = | |
2170 | (struct smb_com_writex_req *)smb; | |
2171 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2172 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 2173 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2174 | } |
2175 | ||
2176 | kref_get(&wdata->refcount); | |
fec344e3 | 2177 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
9b7c18a2 | 2178 | cifs_writev_callback, NULL, wdata, 0); |
c28c89fc JL |
2179 | |
2180 | if (rc == 0) | |
44c58186 | 2181 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2182 | else |
4a5c80d7 | 2183 | kref_put(&wdata->refcount, release); |
c28c89fc | 2184 | |
c28c89fc JL |
2185 | async_writev_out: |
2186 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2187 | return rc; |
2188 | } | |
2189 | ||
d6e04ae6 | 2190 | int |
6d5786a3 | 2191 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2192 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2193 | { |
2194 | int rc = -EACCES; | |
2195 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2196 | int wct; |
d6e04ae6 | 2197 | int smb_hdr_len; |
ec637e3f | 2198 | int resp_buf_type = 0; |
fa2989f4 PS |
2199 | __u32 pid = io_parms->pid; |
2200 | __u16 netfid = io_parms->netfid; | |
2201 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2202 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2203 | unsigned int count = io_parms->length; |
da502f7d | 2204 | struct kvec rsp_iov; |
1da177e4 | 2205 | |
fbec9ab9 JL |
2206 | *nbytes = 0; |
2207 | ||
f96637be | 2208 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2209 | |
4c3130ef | 2210 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2211 | wct = 14; |
4c3130ef | 2212 | } else { |
8cc64c6e | 2213 | wct = 12; |
4c3130ef SF |
2214 | if ((offset >> 32) > 0) { |
2215 | /* can not handle big offset for old srv */ | |
2216 | return -EIO; | |
2217 | } | |
2218 | } | |
8cc64c6e | 2219 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2220 | if (rc) |
2221 | return rc; | |
fa2989f4 PS |
2222 | |
2223 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2224 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2225 | ||
1da177e4 LT |
2226 | /* tcon and ses pointer are checked in smb_init */ |
2227 | if (tcon->ses->server == NULL) | |
2228 | return -ECONNABORTED; | |
2229 | ||
d6e04ae6 | 2230 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2231 | pSMB->Fid = netfid; |
2232 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2233 | if (wct == 14) |
8cc64c6e | 2234 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2235 | pSMB->Reserved = 0xFFFFFFFF; |
2236 | pSMB->WriteMode = 0; | |
2237 | pSMB->Remaining = 0; | |
d6e04ae6 | 2238 | |
1da177e4 | 2239 | pSMB->DataOffset = |
50c2f753 | 2240 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2241 | |
3e84469d SF |
2242 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2243 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2244 | /* header + 1 byte pad */ |
2245 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2246 | if (wct == 14) |
be8e3b00 | 2247 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2248 | else /* wct == 12 */ |
be8e3b00 | 2249 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2250 | if (wct == 14) |
8cc64c6e SF |
2251 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2252 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2253 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2254 | (struct smb_com_writex_req *)pSMB; |
2255 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2256 | } | |
3e84469d | 2257 | iov[0].iov_base = pSMB; |
790fe579 | 2258 | if (wct == 14) |
ec637e3f SF |
2259 | iov[0].iov_len = smb_hdr_len + 4; |
2260 | else /* wct == 12 pad bigger by four bytes */ | |
2261 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2262 | |
da502f7d PS |
2263 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
2264 | &rsp_iov); | |
2265 | cifs_small_buf_release(pSMB); | |
44c58186 | 2266 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2267 | if (rc) { |
f96637be | 2268 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2269 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2270 | /* presumably this can not happen, but best to be safe */ |
2271 | rc = -EIO; | |
d6e04ae6 | 2272 | } else { |
da502f7d | 2273 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
2274 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2275 | *nbytes = (*nbytes) << 16; | |
2276 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2277 | |
2278 | /* | |
2279 | * Mask off high 16 bits when bytes written as returned by the | |
2280 | * server is greater than bytes requested by the client. OS/2 | |
2281 | * servers are known to set incorrect CountHigh values. | |
2282 | */ | |
2283 | if (*nbytes > count) | |
2284 | *nbytes &= 0xFFFF; | |
50c2f753 | 2285 | } |
1da177e4 | 2286 | |
da502f7d | 2287 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 2288 | |
50c2f753 | 2289 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2290 | since file handle passed in no longer valid */ |
2291 | ||
2292 | return rc; | |
2293 | } | |
d6e04ae6 | 2294 | |
6d5786a3 PS |
2295 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2296 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2297 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2298 | { | |
2299 | int rc = 0; | |
2300 | LOCK_REQ *pSMB = NULL; | |
2301 | struct kvec iov[2]; | |
da502f7d | 2302 | struct kvec rsp_iov; |
9ee305b7 PS |
2303 | int resp_buf_type; |
2304 | __u16 count; | |
2305 | ||
f96637be JP |
2306 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2307 | num_lock, num_unlock); | |
9ee305b7 PS |
2308 | |
2309 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2310 | if (rc) | |
2311 | return rc; | |
2312 | ||
2313 | pSMB->Timeout = 0; | |
2314 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2315 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2316 | pSMB->LockType = lock_type; | |
2317 | pSMB->AndXCommand = 0xFF; /* none */ | |
2318 | pSMB->Fid = netfid; /* netfid stays le */ | |
2319 | ||
2320 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2321 | inc_rfc1001_len(pSMB, count); | |
2322 | pSMB->ByteCount = cpu_to_le16(count); | |
2323 | ||
2324 | iov[0].iov_base = (char *)pSMB; | |
2325 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2326 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2327 | iov[1].iov_base = (char *)buf; | |
2328 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2329 | ||
44c58186 | 2330 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
da502f7d PS |
2331 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP, |
2332 | &rsp_iov); | |
2333 | cifs_small_buf_release(pSMB); | |
9ee305b7 | 2334 | if (rc) |
f96637be | 2335 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2336 | |
2337 | return rc; | |
2338 | } | |
d6e04ae6 | 2339 | |
1da177e4 | 2340 | int |
6d5786a3 | 2341 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2342 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2343 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2344 | const __u32 numLock, const __u8 lockType, |
2345 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2346 | { |
2347 | int rc = 0; | |
2348 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2349 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2350 | int bytes_returned; |
a891f0f8 | 2351 | int flags = 0; |
1da177e4 LT |
2352 | __u16 count; |
2353 | ||
f96637be JP |
2354 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2355 | (int)waitFlag, numLock); | |
46810cbf SF |
2356 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2357 | ||
1da177e4 LT |
2358 | if (rc) |
2359 | return rc; | |
2360 | ||
790fe579 | 2361 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2362 | /* no response expected */ |
2363 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2364 | pSMB->Timeout = 0; |
4b18f2a9 | 2365 | } else if (waitFlag) { |
a891f0f8 | 2366 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2367 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2368 | } else { | |
2369 | pSMB->Timeout = 0; | |
2370 | } | |
2371 | ||
2372 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2373 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2374 | pSMB->LockType = lockType; | |
12fed00d | 2375 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2376 | pSMB->AndXCommand = 0xFF; /* none */ |
2377 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2378 | ||
790fe579 | 2379 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2380 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2381 | /* BB where to store pid high? */ |
2382 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2383 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2384 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2385 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2386 | count = sizeof(LOCKING_ANDX_RANGE); | |
2387 | } else { | |
2388 | /* oplock break */ | |
2389 | count = 0; | |
2390 | } | |
be8e3b00 | 2391 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2392 | pSMB->ByteCount = cpu_to_le16(count); |
2393 | ||
da502f7d | 2394 | if (waitFlag) |
7ee1af76 | 2395 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 2396 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 2397 | else |
a891f0f8 | 2398 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 2399 | cifs_small_buf_release(pSMB); |
44c58186 | 2400 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2401 | if (rc) |
f96637be | 2402 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2403 | |
50c2f753 | 2404 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2405 | since file handle passed in no longer valid */ |
2406 | return rc; | |
2407 | } | |
2408 | ||
08547b03 | 2409 | int |
6d5786a3 | 2410 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2411 | const __u16 smb_file_id, const __u32 netpid, |
2412 | const loff_t start_offset, const __u64 len, | |
2413 | struct file_lock *pLockData, const __u16 lock_type, | |
2414 | const bool waitFlag) | |
08547b03 SF |
2415 | { |
2416 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2417 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2418 | struct cifs_posix_lock *parm_data; |
2419 | int rc = 0; | |
3a5ff61c | 2420 | int timeout = 0; |
08547b03 | 2421 | int bytes_returned = 0; |
133672ef | 2422 | int resp_buf_type = 0; |
08547b03 | 2423 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2424 | struct kvec iov[1]; |
da502f7d | 2425 | struct kvec rsp_iov; |
08547b03 | 2426 | |
f96637be | 2427 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2428 | |
08547b03 SF |
2429 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2430 | ||
2431 | if (rc) | |
2432 | return rc; | |
2433 | ||
2434 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2435 | ||
50c2f753 | 2436 | params = 6; |
08547b03 SF |
2437 | pSMB->MaxSetupCount = 0; |
2438 | pSMB->Reserved = 0; | |
2439 | pSMB->Flags = 0; | |
08547b03 SF |
2440 | pSMB->Reserved2 = 0; |
2441 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2442 | offset = param_offset + params; | |
2443 | ||
08547b03 SF |
2444 | count = sizeof(struct cifs_posix_lock); |
2445 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2446 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2447 | pSMB->SetupCount = 1; |
2448 | pSMB->Reserved3 = 0; | |
c5fd363d | 2449 | if (pLockData) |
08547b03 SF |
2450 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2451 | else | |
2452 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2453 | byte_count = 3 /* pad */ + params + count; | |
2454 | pSMB->DataCount = cpu_to_le16(count); | |
2455 | pSMB->ParameterCount = cpu_to_le16(params); | |
2456 | pSMB->TotalDataCount = pSMB->DataCount; | |
2457 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2458 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2459 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2460 | (((char *) &pSMB->hdr.Protocol) + offset); |
2461 | ||
2462 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2463 | if (waitFlag) { |
133672ef | 2464 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2465 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2466 | pSMB->Timeout = cpu_to_le32(-1); |
2467 | } else | |
2468 | pSMB->Timeout = 0; | |
2469 | ||
4f6bcec9 | 2470 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2471 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2472 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2473 | |
2474 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2475 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2476 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2477 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2478 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2479 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2480 | if (waitFlag) { |
2481 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2482 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2483 | } else { | |
133672ef | 2484 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2485 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2486 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2487 | &resp_buf_type, timeout, &rsp_iov); |
2488 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2489 | } |
da502f7d | 2490 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2491 | |
08547b03 | 2492 | if (rc) { |
f96637be | 2493 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2494 | } else if (pLockData) { |
fc94cdb9 SF |
2495 | /* lock structure can be returned on get */ |
2496 | __u16 data_offset; | |
2497 | __u16 data_count; | |
2498 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2499 | ||
820a803f | 2500 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2501 | rc = -EIO; /* bad smb */ |
2502 | goto plk_err_exit; | |
2503 | } | |
fc94cdb9 SF |
2504 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2505 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2506 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2507 | rc = -EIO; |
2508 | goto plk_err_exit; | |
2509 | } | |
2510 | parm_data = (struct cifs_posix_lock *) | |
2511 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2512 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2513 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2514 | else { |
2515 | if (parm_data->lock_type == | |
bc09d141 | 2516 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2517 | pLockData->fl_type = F_RDLCK; |
2518 | else if (parm_data->lock_type == | |
bc09d141 | 2519 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2520 | pLockData->fl_type = F_WRLCK; |
2521 | ||
5443d130 SF |
2522 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2523 | pLockData->fl_end = pLockData->fl_start + | |
2524 | le64_to_cpu(parm_data->length) - 1; | |
2525 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2526 | } |
08547b03 | 2527 | } |
50c2f753 | 2528 | |
fc94cdb9 | 2529 | plk_err_exit: |
da502f7d | 2530 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2531 | |
08547b03 SF |
2532 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2533 | since file handle passed in no longer valid */ | |
2534 | ||
2535 | return rc; | |
2536 | } | |
2537 | ||
2538 | ||
1da177e4 | 2539 | int |
6d5786a3 | 2540 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2541 | { |
2542 | int rc = 0; | |
2543 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2544 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2545 | |
2546 | /* do not retry on dead session on close */ | |
2547 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2548 | if (rc == -EAGAIN) |
1da177e4 LT |
2549 | return 0; |
2550 | if (rc) | |
2551 | return rc; | |
2552 | ||
1da177e4 | 2553 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2554 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2555 | pSMB->ByteCount = 0; |
792af7b0 | 2556 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2557 | cifs_small_buf_release(pSMB); |
44c58186 | 2558 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2559 | if (rc) { |
790fe579 | 2560 | if (rc != -EINTR) { |
1da177e4 | 2561 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2562 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2563 | } |
2564 | } | |
2565 | ||
1da177e4 | 2566 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2567 | if (rc == -EAGAIN) |
1da177e4 LT |
2568 | rc = 0; |
2569 | ||
2570 | return rc; | |
2571 | } | |
2572 | ||
b298f223 | 2573 | int |
6d5786a3 | 2574 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2575 | { |
2576 | int rc = 0; | |
2577 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2578 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2579 | |
2580 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2581 | if (rc) | |
2582 | return rc; | |
2583 | ||
2584 | pSMB->FileID = (__u16) smb_file_id; | |
2585 | pSMB->ByteCount = 0; | |
792af7b0 | 2586 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2587 | cifs_small_buf_release(pSMB); |
44c58186 | 2588 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2589 | if (rc) |
f96637be | 2590 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2591 | |
2592 | return rc; | |
2593 | } | |
2594 | ||
1da177e4 | 2595 | int |
6d5786a3 | 2596 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2597 | const char *from_name, const char *to_name, |
2598 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2599 | { |
2600 | int rc = 0; | |
2601 | RENAME_REQ *pSMB = NULL; | |
2602 | RENAME_RSP *pSMBr = NULL; | |
2603 | int bytes_returned; | |
2604 | int name_len, name_len2; | |
2605 | __u16 count; | |
2baa2682 | 2606 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2607 | |
f96637be | 2608 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2609 | renameRetry: |
2610 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2611 | (void **) &pSMBr); | |
2612 | if (rc) | |
2613 | return rc; | |
2614 | ||
2615 | pSMB->BufferFormat = 0x04; | |
2616 | pSMB->SearchAttributes = | |
2617 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2618 | ATTR_DIRECTORY); | |
2619 | ||
2620 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2621 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2622 | from_name, PATH_MAX, | |
2623 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2624 | name_len++; /* trailing null */ |
2625 | name_len *= 2; | |
2626 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2627 | /* protocol requires ASCII signature byte on Unicode string */ | |
2628 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2629 | name_len2 = | |
acbbb76a | 2630 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2631 | to_name, PATH_MAX, cifs_sb->local_nls, |
2632 | remap); | |
1da177e4 LT |
2633 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2634 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2635 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2636 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2637 | name_len++; /* trailing null */ |
8ceb9843 PS |
2638 | strncpy(pSMB->OldFileName, from_name, name_len); |
2639 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2640 | name_len2++; /* trailing null */ |
2641 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2642 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2643 | name_len2++; /* trailing null */ |
2644 | name_len2++; /* signature byte */ | |
2645 | } | |
2646 | ||
2647 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2648 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2649 | pSMB->ByteCount = cpu_to_le16(count); |
2650 | ||
2651 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2652 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2653 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2654 | if (rc) |
f96637be | 2655 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2656 | |
1da177e4 LT |
2657 | cifs_buf_release(pSMB); |
2658 | ||
2659 | if (rc == -EAGAIN) | |
2660 | goto renameRetry; | |
2661 | ||
2662 | return rc; | |
2663 | } | |
2664 | ||
6d5786a3 | 2665 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2666 | int netfid, const char *target_name, |
50c2f753 | 2667 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2668 | { |
2669 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2670 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2671 | struct set_file_rename *rename_info; |
1da177e4 LT |
2672 | char *data_offset; |
2673 | char dummy_string[30]; | |
2674 | int rc = 0; | |
2675 | int bytes_returned = 0; | |
2676 | int len_of_str; | |
2677 | __u16 params, param_offset, offset, count, byte_count; | |
2678 | ||
f96637be | 2679 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2680 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2681 | (void **) &pSMBr); | |
2682 | if (rc) | |
2683 | return rc; | |
2684 | ||
2685 | params = 6; | |
2686 | pSMB->MaxSetupCount = 0; | |
2687 | pSMB->Reserved = 0; | |
2688 | pSMB->Flags = 0; | |
2689 | pSMB->Timeout = 0; | |
2690 | pSMB->Reserved2 = 0; | |
2691 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2692 | offset = param_offset + params; | |
2693 | ||
2694 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2695 | rename_info = (struct set_file_rename *) data_offset; | |
2696 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2697 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2698 | pSMB->SetupCount = 1; |
2699 | pSMB->Reserved3 = 0; | |
2700 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2701 | byte_count = 3 /* pad */ + params; | |
2702 | pSMB->ParameterCount = cpu_to_le16(params); | |
2703 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2704 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2705 | pSMB->DataOffset = cpu_to_le16(offset); | |
2706 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2707 | rename_info->overwrite = cpu_to_le32(1); | |
2708 | rename_info->root_fid = 0; | |
2709 | /* unicode only call */ | |
790fe579 | 2710 | if (target_name == NULL) { |
50c2f753 | 2711 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2712 | len_of_str = |
2713 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2714 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2715 | } else { |
acbbb76a SF |
2716 | len_of_str = |
2717 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2718 | target_name, PATH_MAX, nls_codepage, |
2719 | remap); | |
1da177e4 LT |
2720 | } |
2721 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2722 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2723 | byte_count += count; |
2724 | pSMB->DataCount = cpu_to_le16(count); | |
2725 | pSMB->TotalDataCount = pSMB->DataCount; | |
2726 | pSMB->Fid = netfid; | |
2727 | pSMB->InformationLevel = | |
2728 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2729 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2730 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2731 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2732 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2733 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2734 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2735 | if (rc) |
f96637be JP |
2736 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2737 | rc); | |
a5a2b489 | 2738 | |
1da177e4 LT |
2739 | cifs_buf_release(pSMB); |
2740 | ||
2741 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2742 | since file handle passed in no longer valid */ | |
2743 | ||
2744 | return rc; | |
2745 | } | |
2746 | ||
2747 | int | |
6d5786a3 PS |
2748 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2749 | const char *fromName, const __u16 target_tid, const char *toName, | |
2750 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2751 | { |
2752 | int rc = 0; | |
2753 | COPY_REQ *pSMB = NULL; | |
2754 | COPY_RSP *pSMBr = NULL; | |
2755 | int bytes_returned; | |
2756 | int name_len, name_len2; | |
2757 | __u16 count; | |
2758 | ||
f96637be | 2759 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2760 | copyRetry: |
2761 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2762 | (void **) &pSMBr); | |
2763 | if (rc) | |
2764 | return rc; | |
2765 | ||
2766 | pSMB->BufferFormat = 0x04; | |
2767 | pSMB->Tid2 = target_tid; | |
2768 | ||
2769 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2770 | ||
2771 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2772 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2773 | fromName, PATH_MAX, nls_codepage, | |
2774 | remap); | |
1da177e4 LT |
2775 | name_len++; /* trailing null */ |
2776 | name_len *= 2; | |
2777 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2778 | /* protocol requires ASCII signature byte on Unicode string */ | |
2779 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2780 | name_len2 = |
acbbb76a SF |
2781 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2782 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2783 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2784 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2785 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2786 | name_len = strnlen(fromName, PATH_MAX); |
2787 | name_len++; /* trailing null */ | |
2788 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2789 | name_len2 = strnlen(toName, PATH_MAX); | |
2790 | name_len2++; /* trailing null */ | |
2791 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2792 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2793 | name_len2++; /* trailing null */ | |
2794 | name_len2++; /* signature byte */ | |
2795 | } | |
2796 | ||
2797 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2798 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2799 | pSMB->ByteCount = cpu_to_le16(count); |
2800 | ||
2801 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2802 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2803 | if (rc) { | |
f96637be JP |
2804 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2805 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2806 | } |
0d817bc0 | 2807 | cifs_buf_release(pSMB); |
1da177e4 LT |
2808 | |
2809 | if (rc == -EAGAIN) | |
2810 | goto copyRetry; | |
2811 | ||
2812 | return rc; | |
2813 | } | |
2814 | ||
2815 | int | |
6d5786a3 | 2816 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2817 | const char *fromName, const char *toName, |
bc8ebdc4 | 2818 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2819 | { |
2820 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2821 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2822 | char *data_offset; | |
2823 | int name_len; | |
2824 | int name_len_target; | |
2825 | int rc = 0; | |
2826 | int bytes_returned = 0; | |
2827 | __u16 params, param_offset, offset, byte_count; | |
2828 | ||
f96637be | 2829 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2830 | createSymLinkRetry: |
2831 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2832 | (void **) &pSMBr); | |
2833 | if (rc) | |
2834 | return rc; | |
2835 | ||
2836 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2837 | name_len = | |
bc8ebdc4 NA |
2838 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2839 | /* find define for this maxpathcomponent */ | |
2840 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2841 | name_len++; /* trailing null */ |
2842 | name_len *= 2; | |
2843 | ||
50c2f753 | 2844 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2845 | name_len = strnlen(fromName, PATH_MAX); |
2846 | name_len++; /* trailing null */ | |
2847 | strncpy(pSMB->FileName, fromName, name_len); | |
2848 | } | |
2849 | params = 6 + name_len; | |
2850 | pSMB->MaxSetupCount = 0; | |
2851 | pSMB->Reserved = 0; | |
2852 | pSMB->Flags = 0; | |
2853 | pSMB->Timeout = 0; | |
2854 | pSMB->Reserved2 = 0; | |
2855 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2856 | InformationLevel) - 4; |
1da177e4 LT |
2857 | offset = param_offset + params; |
2858 | ||
2859 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2860 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2861 | name_len_target = | |
bc8ebdc4 NA |
2862 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2863 | /* find define for this maxpathcomponent */ | |
2864 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2865 | name_len_target++; /* trailing null */ |
2866 | name_len_target *= 2; | |
50c2f753 | 2867 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2868 | name_len_target = strnlen(toName, PATH_MAX); |
2869 | name_len_target++; /* trailing null */ | |
2870 | strncpy(data_offset, toName, name_len_target); | |
2871 | } | |
2872 | ||
2873 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2874 | /* BB find exact max on data count below from sess */ | |
2875 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2876 | pSMB->SetupCount = 1; | |
2877 | pSMB->Reserved3 = 0; | |
2878 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2879 | byte_count = 3 /* pad */ + params + name_len_target; | |
2880 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2881 | pSMB->ParameterCount = cpu_to_le16(params); | |
2882 | pSMB->TotalDataCount = pSMB->DataCount; | |
2883 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2884 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2885 | pSMB->DataOffset = cpu_to_le16(offset); | |
2886 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2887 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2888 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2889 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2890 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2891 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2892 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2893 | if (rc) |
f96637be JP |
2894 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2895 | rc); | |
1da177e4 | 2896 | |
0d817bc0 | 2897 | cifs_buf_release(pSMB); |
1da177e4 LT |
2898 | |
2899 | if (rc == -EAGAIN) | |
2900 | goto createSymLinkRetry; | |
2901 | ||
2902 | return rc; | |
2903 | } | |
2904 | ||
2905 | int | |
6d5786a3 | 2906 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2907 | const char *fromName, const char *toName, |
737b758c | 2908 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2909 | { |
2910 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2911 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2912 | char *data_offset; | |
2913 | int name_len; | |
2914 | int name_len_target; | |
2915 | int rc = 0; | |
2916 | int bytes_returned = 0; | |
2917 | __u16 params, param_offset, offset, byte_count; | |
2918 | ||
f96637be | 2919 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2920 | createHardLinkRetry: |
2921 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2922 | (void **) &pSMBr); | |
2923 | if (rc) | |
2924 | return rc; | |
2925 | ||
2926 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2927 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2928 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2929 | name_len++; /* trailing null */ |
2930 | name_len *= 2; | |
2931 | ||
50c2f753 | 2932 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2933 | name_len = strnlen(toName, PATH_MAX); |
2934 | name_len++; /* trailing null */ | |
2935 | strncpy(pSMB->FileName, toName, name_len); | |
2936 | } | |
2937 | params = 6 + name_len; | |
2938 | pSMB->MaxSetupCount = 0; | |
2939 | pSMB->Reserved = 0; | |
2940 | pSMB->Flags = 0; | |
2941 | pSMB->Timeout = 0; | |
2942 | pSMB->Reserved2 = 0; | |
2943 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2944 | InformationLevel) - 4; |
1da177e4 LT |
2945 | offset = param_offset + params; |
2946 | ||
2947 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2948 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2949 | name_len_target = | |
acbbb76a SF |
2950 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2951 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2952 | name_len_target++; /* trailing null */ |
2953 | name_len_target *= 2; | |
50c2f753 | 2954 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2955 | name_len_target = strnlen(fromName, PATH_MAX); |
2956 | name_len_target++; /* trailing null */ | |
2957 | strncpy(data_offset, fromName, name_len_target); | |
2958 | } | |
2959 | ||
2960 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2961 | /* BB find exact max on data count below from sess*/ | |
2962 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2963 | pSMB->SetupCount = 1; | |
2964 | pSMB->Reserved3 = 0; | |
2965 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2966 | byte_count = 3 /* pad */ + params + name_len_target; | |
2967 | pSMB->ParameterCount = cpu_to_le16(params); | |
2968 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2969 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2970 | pSMB->TotalDataCount = pSMB->DataCount; | |
2971 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2972 | pSMB->DataOffset = cpu_to_le16(offset); | |
2973 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2974 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2975 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2976 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2977 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2978 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2979 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2980 | if (rc) |
f96637be JP |
2981 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2982 | rc); | |
1da177e4 LT |
2983 | |
2984 | cifs_buf_release(pSMB); | |
2985 | if (rc == -EAGAIN) | |
2986 | goto createHardLinkRetry; | |
2987 | ||
2988 | return rc; | |
2989 | } | |
2990 | ||
2991 | int | |
6d5786a3 | 2992 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2993 | const char *from_name, const char *to_name, |
2994 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2995 | { |
2996 | int rc = 0; | |
2997 | NT_RENAME_REQ *pSMB = NULL; | |
2998 | RENAME_RSP *pSMBr = NULL; | |
2999 | int bytes_returned; | |
3000 | int name_len, name_len2; | |
3001 | __u16 count; | |
2baa2682 | 3002 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 3003 | |
f96637be | 3004 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
3005 | winCreateHardLinkRetry: |
3006 | ||
3007 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3008 | (void **) &pSMBr); | |
3009 | if (rc) | |
3010 | return rc; | |
3011 | ||
3012 | pSMB->SearchAttributes = | |
3013 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3014 | ATTR_DIRECTORY); | |
3015 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3016 | pSMB->ClusterCount = 0; | |
3017 | ||
3018 | pSMB->BufferFormat = 0x04; | |
3019 | ||
3020 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3021 | name_len = | |
d6e906f1 SF |
3022 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3023 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3024 | name_len++; /* trailing null */ |
3025 | name_len *= 2; | |
fcc7c09d JL |
3026 | |
3027 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3028 | pSMB->OldFileName[name_len] = 0x04; | |
3029 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3030 | name_len2 = |
acbbb76a | 3031 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3032 | to_name, PATH_MAX, cifs_sb->local_nls, |
3033 | remap); | |
1da177e4 LT |
3034 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3035 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 3036 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 3037 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 3038 | name_len++; /* trailing null */ |
d6e906f1 SF |
3039 | strncpy(pSMB->OldFileName, from_name, name_len); |
3040 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
3041 | name_len2++; /* trailing null */ |
3042 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 3043 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
3044 | name_len2++; /* trailing null */ |
3045 | name_len2++; /* signature byte */ | |
3046 | } | |
3047 | ||
3048 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3049 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3050 | pSMB->ByteCount = cpu_to_le16(count); |
3051 | ||
3052 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3053 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3054 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3055 | if (rc) |
f96637be | 3056 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3057 | |
1da177e4 LT |
3058 | cifs_buf_release(pSMB); |
3059 | if (rc == -EAGAIN) | |
3060 | goto winCreateHardLinkRetry; | |
3061 | ||
3062 | return rc; | |
3063 | } | |
3064 | ||
3065 | int | |
6d5786a3 | 3066 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3067 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3068 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3069 | { |
3070 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3071 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3072 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3073 | int rc = 0; | |
3074 | int bytes_returned; | |
3075 | int name_len; | |
3076 | __u16 params, byte_count; | |
460b9696 | 3077 | char *data_start; |
1da177e4 | 3078 | |
f96637be | 3079 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3080 | |
3081 | querySymLinkRetry: | |
3082 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3083 | (void **) &pSMBr); | |
3084 | if (rc) | |
3085 | return rc; | |
3086 | ||
3087 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3088 | name_len = | |
bc8ebdc4 NA |
3089 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3090 | searchName, PATH_MAX, nls_codepage, | |
3091 | remap); | |
1da177e4 LT |
3092 | name_len++; /* trailing null */ |
3093 | name_len *= 2; | |
50c2f753 | 3094 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3095 | name_len = strnlen(searchName, PATH_MAX); |
3096 | name_len++; /* trailing null */ | |
3097 | strncpy(pSMB->FileName, searchName, name_len); | |
3098 | } | |
3099 | ||
3100 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3101 | pSMB->TotalDataCount = 0; | |
3102 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3103 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3104 | pSMB->MaxSetupCount = 0; |
3105 | pSMB->Reserved = 0; | |
3106 | pSMB->Flags = 0; | |
3107 | pSMB->Timeout = 0; | |
3108 | pSMB->Reserved2 = 0; | |
3109 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3110 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3111 | pSMB->DataCount = 0; |
3112 | pSMB->DataOffset = 0; | |
3113 | pSMB->SetupCount = 1; | |
3114 | pSMB->Reserved3 = 0; | |
3115 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3116 | byte_count = params + 1 /* pad */ ; | |
3117 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3118 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3119 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3120 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3121 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3122 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3123 | ||
3124 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3125 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3126 | if (rc) { | |
f96637be | 3127 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3128 | } else { |
3129 | /* decode response */ | |
3130 | ||
3131 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3132 | /* BB also check enough total bytes returned */ |
820a803f | 3133 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3134 | rc = -EIO; |
1da177e4 | 3135 | else { |
0e0d2cf3 | 3136 | bool is_unicode; |
460b9696 JL |
3137 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3138 | ||
3139 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3140 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3141 | |
0e0d2cf3 SF |
3142 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3143 | is_unicode = true; | |
3144 | else | |
3145 | is_unicode = false; | |
3146 | ||
737b758c | 3147 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3148 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3149 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3150 | if (!*symlinkinfo) |
460b9696 | 3151 | rc = -ENOMEM; |
1da177e4 LT |
3152 | } |
3153 | } | |
3154 | cifs_buf_release(pSMB); | |
3155 | if (rc == -EAGAIN) | |
3156 | goto querySymLinkRetry; | |
3157 | return rc; | |
3158 | } | |
3159 | ||
c52a9554 SF |
3160 | /* |
3161 | * Recent Windows versions now create symlinks more frequently | |
3162 | * and they use the "reparse point" mechanism below. We can of course | |
3163 | * do symlinks nicely to Samba and other servers which support the | |
3164 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3165 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3166 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3167 | * In the interim this code has been moved to its own config option so | |
3168 | * it is not compiled in by default until callers fixed up and more tested. | |
3169 | */ | |
1da177e4 | 3170 | int |
d244bf2d PS |
3171 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3172 | __u16 fid, char **symlinkinfo, | |
3173 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3174 | { |
3175 | int rc = 0; | |
3176 | int bytes_returned; | |
50c2f753 SF |
3177 | struct smb_com_transaction_ioctl_req *pSMB; |
3178 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3179 | bool is_unicode; |
3180 | unsigned int sub_len; | |
3181 | char *sub_start; | |
c31f3307 SF |
3182 | struct reparse_symlink_data *reparse_buf; |
3183 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3184 | __u32 data_offset, data_count; |
3185 | char *end_of_smb; | |
3186 | ||
3187 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3188 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3189 | (void **) &pSMBr); | |
3190 | if (rc) | |
3191 | return rc; | |
3192 | ||
3193 | pSMB->TotalParameterCount = 0 ; | |
3194 | pSMB->TotalDataCount = 0; | |
3195 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3196 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3197 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3198 | pSMB->MaxSetupCount = 4; |
3199 | pSMB->Reserved = 0; | |
3200 | pSMB->ParameterOffset = 0; | |
3201 | pSMB->DataCount = 0; | |
3202 | pSMB->DataOffset = 0; | |
3203 | pSMB->SetupCount = 4; | |
3204 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3205 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3206 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3207 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3208 | pSMB->IsRootFlag = 0; | |
3209 | pSMB->Fid = fid; /* file handle always le */ | |
3210 | pSMB->ByteCount = 0; | |
3211 | ||
3212 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3213 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3214 | if (rc) { | |
f96637be | 3215 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3216 | goto qreparse_out; |
3217 | } | |
3218 | ||
3219 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3220 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3221 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3222 | /* BB also check enough total bytes returned */ | |
3223 | rc = -EIO; /* bad smb */ | |
3224 | goto qreparse_out; | |
3225 | } | |
3226 | if (!data_count || (data_count > 2048)) { | |
3227 | rc = -EIO; | |
3228 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3229 | goto qreparse_out; | |
3230 | } | |
3231 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3232 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3233 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3234 | if ((char *)reparse_buf >= end_of_smb) { | |
3235 | rc = -EIO; | |
3236 | goto qreparse_out; | |
1da177e4 | 3237 | } |
c31f3307 SF |
3238 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3239 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3240 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3241 | ||
3242 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3243 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3244 | le64_to_cpu(posix_buf->InodeType)); | |
3245 | rc = -EOPNOTSUPP; | |
3246 | goto qreparse_out; | |
3247 | } | |
3248 | is_unicode = true; | |
3249 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3250 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3251 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3252 | rc = -EIO; | |
3253 | goto qreparse_out; | |
3254 | } | |
3255 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3256 | sub_len, is_unicode, nls_codepage); | |
3257 | goto qreparse_out; | |
3258 | } else if (reparse_buf->ReparseTag != | |
3259 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3260 | rc = -EOPNOTSUPP; | |
3261 | goto qreparse_out; | |
3262 | } | |
3263 | ||
3264 | /* Reparse tag is NTFS symlink */ | |
3265 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3266 | reparse_buf->PathBuffer; | |
3267 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3268 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3269 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3270 | rc = -EIO; | |
3271 | goto qreparse_out; | |
3272 | } | |
d244bf2d PS |
3273 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3274 | is_unicode = true; | |
3275 | else | |
3276 | is_unicode = false; | |
989c7e51 | 3277 | |
d244bf2d PS |
3278 | /* BB FIXME investigate remapping reserved chars here */ |
3279 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3280 | nls_codepage); | |
3281 | if (!*symlinkinfo) | |
3282 | rc = -ENOMEM; | |
1da177e4 | 3283 | qreparse_out: |
4a6d87f1 | 3284 | cifs_buf_release(pSMB); |
1da177e4 | 3285 | |
d244bf2d PS |
3286 | /* |
3287 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3288 | * since file handle passed in no longer valid. | |
3289 | */ | |
1da177e4 LT |
3290 | return rc; |
3291 | } | |
3292 | ||
c7f508a9 SF |
3293 | int |
3294 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3295 | __u16 fid) | |
3296 | { | |
3297 | int rc = 0; | |
3298 | int bytes_returned; | |
3299 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3300 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3301 | ||
3302 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3303 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3304 | (void **) &pSMBr); | |
3305 | if (rc) | |
3306 | return rc; | |
3307 | ||
3308 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3309 | ||
3310 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3311 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3312 | pSMB->MaxParameterCount = 0; |
3313 | pSMB->MaxDataCount = 0; | |
3314 | pSMB->MaxSetupCount = 4; | |
3315 | pSMB->Reserved = 0; | |
3316 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3317 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3318 | pSMB->DataOffset = |
3319 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3320 | compression_state) - 4); /* 84 */ | |
3321 | pSMB->SetupCount = 4; | |
bc09d141 | 3322 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3323 | pSMB->ParameterCount = 0; |
bc09d141 | 3324 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3325 | pSMB->IsFsctl = 1; /* FSCTL */ |
3326 | pSMB->IsRootFlag = 0; | |
3327 | pSMB->Fid = fid; /* file handle always le */ | |
3328 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3329 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3330 | inc_rfc1001_len(pSMB, 5); |
3331 | ||
3332 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3333 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3334 | if (rc) | |
3335 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3336 | ||
3337 | cifs_buf_release(pSMB); | |
3338 | ||
3339 | /* | |
3340 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3341 | * since file handle passed in no longer valid. | |
3342 | */ | |
3343 | return rc; | |
3344 | } | |
3345 | ||
3346 | ||
1da177e4 LT |
3347 | #ifdef CONFIG_CIFS_POSIX |
3348 | ||
3349 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3350 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3351 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3352 | { |
3353 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3354 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3355 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3356 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3357 | /* |
3358 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3359 | ace->e_perm, ace->e_tag, ace->e_id); | |
3360 | */ | |
1da177e4 LT |
3361 | |
3362 | return; | |
3363 | } | |
3364 | ||
3365 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3366 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3367 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3368 | { |
3369 | int size = 0; | |
3370 | int i; | |
3371 | __u16 count; | |
50c2f753 SF |
3372 | struct cifs_posix_ace *pACE; |
3373 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3374 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3375 | |
3376 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3377 | return -EOPNOTSUPP; | |
3378 | ||
45987e00 | 3379 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3380 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3381 | pACE = &cifs_acl->ace_array[0]; | |
3382 | size = sizeof(struct cifs_posix_acl); | |
3383 | size += sizeof(struct cifs_posix_ace) * count; | |
3384 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3385 | if (size_of_data_area < size) { |
f96637be JP |
3386 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3387 | size_of_data_area, size); | |
1da177e4 LT |
3388 | return -EINVAL; |
3389 | } | |
45987e00 | 3390 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3391 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3392 | size = sizeof(struct cifs_posix_acl); | |
3393 | size += sizeof(struct cifs_posix_ace) * count; | |
3394 | /* skip past access ACEs to get to default ACEs */ | |
3395 | pACE = &cifs_acl->ace_array[count]; | |
3396 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3397 | size += sizeof(struct cifs_posix_ace) * count; | |
3398 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3399 | if (size_of_data_area < size) |
1da177e4 LT |
3400 | return -EINVAL; |
3401 | } else { | |
3402 | /* illegal type */ | |
3403 | return -EINVAL; | |
3404 | } | |
3405 | ||
3406 | size = posix_acl_xattr_size(count); | |
790fe579 | 3407 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3408 | /* used to query ACL EA size */ |
790fe579 | 3409 | } else if (size > buflen) { |
1da177e4 LT |
3410 | return -ERANGE; |
3411 | } else /* buffer big enough */ { | |
2211d5ba AG |
3412 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3413 | ||
ff7feac9 | 3414 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3415 | for (i = 0; i < count ; i++) { |
2211d5ba | 3416 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3417 | pACE++; |
1da177e4 LT |
3418 | } |
3419 | } | |
3420 | return size; | |
3421 | } | |
3422 | ||
50c2f753 | 3423 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3424 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 LT |
3425 | { |
3426 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3427 | ||
ff7feac9 SF |
3428 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3429 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3430 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3431 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3432 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3433 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3434 | } else |
ff7feac9 | 3435 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3436 | /* |
3437 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3438 | ace->e_perm, ace->e_tag, ace->e_id); | |
3439 | */ | |
1da177e4 LT |
3440 | return rc; |
3441 | } | |
3442 | ||
3443 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3444 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3445 | const int buflen, const int acl_type) | |
1da177e4 LT |
3446 | { |
3447 | __u16 rc = 0; | |
50c2f753 | 3448 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3449 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3450 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3451 | int count; |
3452 | int i; | |
3453 | ||
790fe579 | 3454 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3455 | return 0; |
3456 | ||
3457 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3458 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3459 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3460 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3461 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3462 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3463 | return 0; |
3464 | } | |
3465 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3466 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3467 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3468 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3469 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3470 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3471 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3472 | } else { |
f96637be | 3473 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3474 | return 0; |
3475 | } | |
50c2f753 | 3476 | for (i = 0; i < count; i++) { |
ae9ebe7c | 3477 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); |
790fe579 | 3478 | if (rc != 0) { |
1da177e4 LT |
3479 | /* ACE not converted */ |
3480 | break; | |
3481 | } | |
3482 | } | |
790fe579 | 3483 | if (rc == 0) { |
1da177e4 LT |
3484 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3485 | rc += sizeof(struct cifs_posix_acl); | |
3486 | /* BB add check to make sure ACL does not overflow SMB */ | |
3487 | } | |
3488 | return rc; | |
3489 | } | |
3490 | ||
3491 | int | |
6d5786a3 | 3492 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3493 | const unsigned char *searchName, |
3494 | char *acl_inf, const int buflen, const int acl_type, | |
3495 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3496 | { |
3497 | /* SMB_QUERY_POSIX_ACL */ | |
3498 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3499 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3500 | int rc = 0; | |
3501 | int bytes_returned; | |
3502 | int name_len; | |
3503 | __u16 params, byte_count; | |
50c2f753 | 3504 | |
f96637be | 3505 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3506 | |
3507 | queryAclRetry: | |
3508 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3509 | (void **) &pSMBr); | |
3510 | if (rc) | |
3511 | return rc; | |
50c2f753 | 3512 | |
1da177e4 LT |
3513 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3514 | name_len = | |
acbbb76a SF |
3515 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3516 | searchName, PATH_MAX, nls_codepage, | |
3517 | remap); | |
1da177e4 LT |
3518 | name_len++; /* trailing null */ |
3519 | name_len *= 2; | |
3520 | pSMB->FileName[name_len] = 0; | |
3521 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3522 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3523 | name_len = strnlen(searchName, PATH_MAX); |
3524 | name_len++; /* trailing null */ | |
3525 | strncpy(pSMB->FileName, searchName, name_len); | |
3526 | } | |
3527 | ||
3528 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3529 | pSMB->TotalDataCount = 0; | |
3530 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3531 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3532 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3533 | pSMB->MaxSetupCount = 0; | |
3534 | pSMB->Reserved = 0; | |
3535 | pSMB->Flags = 0; | |
3536 | pSMB->Timeout = 0; | |
3537 | pSMB->Reserved2 = 0; | |
3538 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3539 | offsetof(struct smb_com_transaction2_qpi_req, |
3540 | InformationLevel) - 4); | |
1da177e4 LT |
3541 | pSMB->DataCount = 0; |
3542 | pSMB->DataOffset = 0; | |
3543 | pSMB->SetupCount = 1; | |
3544 | pSMB->Reserved3 = 0; | |
3545 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3546 | byte_count = params + 1 /* pad */ ; | |
3547 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3548 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3549 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3550 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3551 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3552 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3553 | ||
3554 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3555 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3556 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3557 | if (rc) { |
f96637be | 3558 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3559 | } else { |
3560 | /* decode response */ | |
50c2f753 | 3561 | |
1da177e4 | 3562 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3563 | /* BB also check enough total bytes returned */ |
820a803f | 3564 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3565 | rc = -EIO; /* bad smb */ |
3566 | else { | |
3567 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3568 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3569 | rc = cifs_copy_posix_acl(acl_inf, | |
3570 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3571 | buflen, acl_type, count); |
1da177e4 LT |
3572 | } |
3573 | } | |
3574 | cifs_buf_release(pSMB); | |
3575 | if (rc == -EAGAIN) | |
3576 | goto queryAclRetry; | |
3577 | return rc; | |
3578 | } | |
3579 | ||
3580 | int | |
6d5786a3 | 3581 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3582 | const unsigned char *fileName, |
3583 | const char *local_acl, const int buflen, | |
3584 | const int acl_type, | |
3585 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3586 | { |
3587 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3588 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3589 | char *parm_data; | |
3590 | int name_len; | |
3591 | int rc = 0; | |
3592 | int bytes_returned = 0; | |
3593 | __u16 params, byte_count, data_count, param_offset, offset; | |
3594 | ||
f96637be | 3595 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3596 | setAclRetry: |
3597 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3598 | (void **) &pSMBr); |
1da177e4 LT |
3599 | if (rc) |
3600 | return rc; | |
3601 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3602 | name_len = | |
acbbb76a SF |
3603 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3604 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3605 | name_len++; /* trailing null */ |
3606 | name_len *= 2; | |
50c2f753 | 3607 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3608 | name_len = strnlen(fileName, PATH_MAX); |
3609 | name_len++; /* trailing null */ | |
3610 | strncpy(pSMB->FileName, fileName, name_len); | |
3611 | } | |
3612 | params = 6 + name_len; | |
3613 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3614 | /* BB find max SMB size from sess */ |
3615 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3616 | pSMB->MaxSetupCount = 0; |
3617 | pSMB->Reserved = 0; | |
3618 | pSMB->Flags = 0; | |
3619 | pSMB->Timeout = 0; | |
3620 | pSMB->Reserved2 = 0; | |
3621 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3622 | InformationLevel) - 4; |
1da177e4 LT |
3623 | offset = param_offset + params; |
3624 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3625 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3626 | ||
3627 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3628 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3629 | |
790fe579 | 3630 | if (data_count == 0) { |
1da177e4 LT |
3631 | rc = -EOPNOTSUPP; |
3632 | goto setACLerrorExit; | |
3633 | } | |
3634 | pSMB->DataOffset = cpu_to_le16(offset); | |
3635 | pSMB->SetupCount = 1; | |
3636 | pSMB->Reserved3 = 0; | |
3637 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3638 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3639 | byte_count = 3 /* pad */ + params + data_count; | |
3640 | pSMB->DataCount = cpu_to_le16(data_count); | |
3641 | pSMB->TotalDataCount = pSMB->DataCount; | |
3642 | pSMB->ParameterCount = cpu_to_le16(params); | |
3643 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3644 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3645 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3646 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3647 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3648 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3649 | if (rc) |
f96637be | 3650 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3651 | |
3652 | setACLerrorExit: | |
3653 | cifs_buf_release(pSMB); | |
3654 | if (rc == -EAGAIN) | |
3655 | goto setAclRetry; | |
3656 | return rc; | |
3657 | } | |
3658 | ||
f654bac2 SF |
3659 | /* BB fix tabs in this function FIXME BB */ |
3660 | int | |
6d5786a3 | 3661 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3662 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3663 | { |
50c2f753 SF |
3664 | int rc = 0; |
3665 | struct smb_t2_qfi_req *pSMB = NULL; | |
3666 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3667 | int bytes_returned; | |
3668 | __u16 params, byte_count; | |
f654bac2 | 3669 | |
f96637be | 3670 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3671 | if (tcon == NULL) |
3672 | return -ENODEV; | |
f654bac2 SF |
3673 | |
3674 | GetExtAttrRetry: | |
790fe579 SF |
3675 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3676 | (void **) &pSMBr); | |
3677 | if (rc) | |
3678 | return rc; | |
f654bac2 | 3679 | |
ad7a2926 | 3680 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3681 | pSMB->t2.TotalDataCount = 0; |
3682 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3683 | /* BB find exact max data count below from sess structure BB */ | |
3684 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3685 | pSMB->t2.MaxSetupCount = 0; | |
3686 | pSMB->t2.Reserved = 0; | |
3687 | pSMB->t2.Flags = 0; | |
3688 | pSMB->t2.Timeout = 0; | |
3689 | pSMB->t2.Reserved2 = 0; | |
3690 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3691 | Fid) - 4); | |
3692 | pSMB->t2.DataCount = 0; | |
3693 | pSMB->t2.DataOffset = 0; | |
3694 | pSMB->t2.SetupCount = 1; | |
3695 | pSMB->t2.Reserved3 = 0; | |
3696 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3697 | byte_count = params + 1 /* pad */ ; | |
3698 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3699 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3700 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3701 | pSMB->Pad = 0; | |
f654bac2 | 3702 | pSMB->Fid = netfid; |
be8e3b00 | 3703 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3704 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3705 | ||
3706 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3707 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3708 | if (rc) { | |
f96637be | 3709 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3710 | } else { |
3711 | /* decode response */ | |
3712 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3713 | /* BB also check enough total bytes returned */ |
820a803f | 3714 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3715 | /* If rc should we check for EOPNOSUPP and |
3716 | disable the srvino flag? or in caller? */ | |
3717 | rc = -EIO; /* bad smb */ | |
3718 | else { | |
3719 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3720 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3721 | struct file_chattr_info *pfinfo; | |
3722 | /* BB Do we need a cast or hash here ? */ | |
3723 | if (count != 16) { | |
f96637be | 3724 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3725 | rc = -EIO; |
3726 | goto GetExtAttrOut; | |
3727 | } | |
3728 | pfinfo = (struct file_chattr_info *) | |
3729 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3730 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3731 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3732 | } |
3733 | } | |
f654bac2 | 3734 | GetExtAttrOut: |
790fe579 SF |
3735 | cifs_buf_release(pSMB); |
3736 | if (rc == -EAGAIN) | |
3737 | goto GetExtAttrRetry; | |
3738 | return rc; | |
f654bac2 SF |
3739 | } |
3740 | ||
f654bac2 | 3741 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3742 | |
79df1bae JL |
3743 | #ifdef CONFIG_CIFS_ACL |
3744 | /* | |
3745 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3746 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3747 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3748 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3749 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3750 | * by caller | |
3751 | */ | |
3752 | static int | |
3753 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3754 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3755 | void **ret_buf) |
3756 | { | |
3757 | int rc; | |
3758 | __u32 temp_offset; | |
3759 | struct smb_com_ntransact_req *pSMB; | |
3760 | ||
3761 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3762 | (void **)&pSMB); | |
3763 | if (rc) | |
3764 | return rc; | |
3765 | *ret_buf = (void *)pSMB; | |
3766 | pSMB->Reserved = 0; | |
3767 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3768 | pSMB->TotalDataCount = 0; | |
c974befa | 3769 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3770 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3771 | pSMB->DataCount = pSMB->TotalDataCount; | |
3772 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3773 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3774 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3775 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3776 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3777 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3778 | return 0; | |
3779 | } | |
3780 | ||
3781 | static int | |
3782 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3783 | __u32 *pparmlen, __u32 *pdatalen) | |
3784 | { | |
3785 | char *end_of_smb; | |
3786 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3787 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3788 | u16 bcc; |
79df1bae JL |
3789 | |
3790 | *pdatalen = 0; | |
3791 | *pparmlen = 0; | |
3792 | ||
3793 | if (buf == NULL) | |
3794 | return -EINVAL; | |
3795 | ||
3796 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3797 | ||
820a803f JL |
3798 | bcc = get_bcc(&pSMBr->hdr); |
3799 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3800 | (char *)&pSMBr->ByteCount; |
3801 | ||
3802 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3803 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3804 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3805 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3806 | ||
3807 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3808 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3809 | ||
3810 | /* should we also check that parm and data areas do not overlap? */ | |
3811 | if (*ppparm > end_of_smb) { | |
f96637be | 3812 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3813 | return -EINVAL; |
3814 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3815 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3816 | return -EINVAL; |
3817 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3818 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3819 | return -EINVAL; |
3820 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3821 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3822 | *ppdata, data_count, (data_count + *ppdata), | |
3823 | end_of_smb, pSMBr); | |
79df1bae | 3824 | return -EINVAL; |
820a803f | 3825 | } else if (parm_count + data_count > bcc) { |
f96637be | 3826 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3827 | return -EINVAL; |
3828 | } | |
3829 | *pdatalen = data_count; | |
3830 | *pparmlen = parm_count; | |
3831 | return 0; | |
3832 | } | |
3833 | ||
0a4b92c0 SF |
3834 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3835 | int | |
6d5786a3 | 3836 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3837 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3838 | { |
3839 | int rc = 0; | |
3840 | int buf_type = 0; | |
ad7a2926 | 3841 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3842 | struct kvec iov[1]; |
da502f7d | 3843 | struct kvec rsp_iov; |
0a4b92c0 | 3844 | |
f96637be | 3845 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3846 | |
630f3f0c SF |
3847 | *pbuflen = 0; |
3848 | *acl_inf = NULL; | |
3849 | ||
b9c7a2bb | 3850 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3851 | 8 /* parm len */, tcon, (void **) &pSMB); |
3852 | if (rc) | |
3853 | return rc; | |
3854 | ||
3855 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3856 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3857 | pSMB->MaxSetupCount = 0; | |
3858 | pSMB->Fid = fid; /* file handle always le */ | |
3859 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3860 | CIFS_ACL_DACL); | |
3861 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3862 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3863 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3864 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3865 | |
a761ac57 | 3866 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3867 | 0, &rsp_iov); |
3868 | cifs_small_buf_release(pSMB); | |
44c58186 | 3869 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3870 | if (rc) { |
f96637be | 3871 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3872 | } else { /* decode response */ |
ad7a2926 | 3873 | __le32 *parm; |
630f3f0c SF |
3874 | __u32 parm_len; |
3875 | __u32 acl_len; | |
50c2f753 | 3876 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3877 | char *pdata; |
0a4b92c0 SF |
3878 | |
3879 | /* validate_nttransact */ | |
da502f7d | 3880 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3881 | &pdata, &parm_len, pbuflen); |
790fe579 | 3882 | if (rc) |
0a4b92c0 | 3883 | goto qsec_out; |
da502f7d | 3884 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3885 | |
f96637be JP |
3886 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3887 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3888 | |
3889 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3890 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3891 | *pbuflen = 0; |
0a4b92c0 SF |
3892 | goto qsec_out; |
3893 | } | |
3894 | ||
3895 | /* BB check that data area is minimum length and as big as acl_len */ | |
3896 | ||
af6f4612 | 3897 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3898 | if (acl_len != *pbuflen) { |
f96637be JP |
3899 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3900 | acl_len, *pbuflen); | |
630f3f0c SF |
3901 | if (*pbuflen > acl_len) |
3902 | *pbuflen = acl_len; | |
3903 | } | |
0a4b92c0 | 3904 | |
630f3f0c SF |
3905 | /* check if buffer is big enough for the acl |
3906 | header followed by the smallest SID */ | |
3907 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3908 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3909 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3910 | rc = -EINVAL; |
3911 | *pbuflen = 0; | |
3912 | } else { | |
f7f7c185 | 3913 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3914 | if (*acl_inf == NULL) { |
3915 | *pbuflen = 0; | |
3916 | rc = -ENOMEM; | |
3917 | } | |
630f3f0c | 3918 | } |
0a4b92c0 SF |
3919 | } |
3920 | qsec_out: | |
da502f7d | 3921 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3922 | return rc; |
3923 | } | |
97837582 SF |
3924 | |
3925 | int | |
6d5786a3 | 3926 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3927 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3928 | { |
3929 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3930 | int rc = 0; | |
3931 | int bytes_returned = 0; | |
3932 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3933 | void *pSMBr; |
97837582 SF |
3934 | |
3935 | setCifsAclRetry: | |
b2a3ad9c | 3936 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3937 | if (rc) |
b2a3ad9c | 3938 | return rc; |
97837582 SF |
3939 | |
3940 | pSMB->MaxSetupCount = 0; | |
3941 | pSMB->Reserved = 0; | |
3942 | ||
3943 | param_count = 8; | |
3944 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3945 | data_count = acllen; | |
3946 | data_offset = param_offset + param_count; | |
3947 | byte_count = 3 /* pad */ + param_count; | |
3948 | ||
3949 | pSMB->DataCount = cpu_to_le32(data_count); | |
3950 | pSMB->TotalDataCount = pSMB->DataCount; | |
3951 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3952 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3953 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3954 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3955 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3956 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3957 | pSMB->SetupCount = 0; | |
3958 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3959 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3960 | ||
3961 | pSMB->Fid = fid; /* file handle always le */ | |
3962 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3963 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3964 | |
3965 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3966 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3967 | data_offset, pntsd, acllen); | |
be8e3b00 | 3968 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3969 | } else |
be8e3b00 | 3970 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3971 | |
3972 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3973 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3974 | ||
f96637be JP |
3975 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3976 | bytes_returned, rc); | |
97837582 | 3977 | if (rc) |
f96637be | 3978 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3979 | cifs_buf_release(pSMB); |
3980 | ||
3981 | if (rc == -EAGAIN) | |
3982 | goto setCifsAclRetry; | |
3983 | ||
3984 | return (rc); | |
3985 | } | |
3986 | ||
79df1bae | 3987 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3988 | |
6b8edfe0 SF |
3989 | /* Legacy Query Path Information call for lookup to old servers such |
3990 | as Win9x/WinME */ | |
68889f26 PS |
3991 | int |
3992 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3993 | const char *search_name, FILE_ALL_INFO *data, | |
3994 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3995 | { |
ad7a2926 SF |
3996 | QUERY_INFORMATION_REQ *pSMB; |
3997 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3998 | int rc = 0; |
3999 | int bytes_returned; | |
4000 | int name_len; | |
4001 | ||
f96637be | 4002 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
4003 | QInfRetry: |
4004 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 4005 | (void **) &pSMBr); |
6b8edfe0 SF |
4006 | if (rc) |
4007 | return rc; | |
4008 | ||
4009 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4010 | name_len = | |
acbbb76a | 4011 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 4012 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4013 | remap); |
6b8edfe0 SF |
4014 | name_len++; /* trailing null */ |
4015 | name_len *= 2; | |
50c2f753 | 4016 | } else { |
68889f26 | 4017 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 4018 | name_len++; /* trailing null */ |
68889f26 | 4019 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
4020 | } |
4021 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4022 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4023 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4024 | pSMB->ByteCount = cpu_to_le16(name_len); |
4025 | ||
4026 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4027 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4028 | if (rc) { |
f96637be | 4029 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4030 | } else if (data) { |
1bd5bbcb SF |
4031 | struct timespec ts; |
4032 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
4033 | |
4034 | /* decode response */ | |
1bd5bbcb | 4035 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4036 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4037 | ts.tv_nsec = 0; |
4038 | ts.tv_sec = time; | |
4039 | /* decode time fields */ | |
68889f26 PS |
4040 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4041 | data->LastWriteTime = data->ChangeTime; | |
4042 | data->LastAccessTime = 0; | |
4043 | data->AllocationSize = | |
70ca734a | 4044 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4045 | data->EndOfFile = data->AllocationSize; |
4046 | data->Attributes = | |
70ca734a | 4047 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4048 | } else |
4049 | rc = -EIO; /* bad buffer passed in */ | |
4050 | ||
4051 | cifs_buf_release(pSMB); | |
4052 | ||
4053 | if (rc == -EAGAIN) | |
4054 | goto QInfRetry; | |
4055 | ||
4056 | return rc; | |
4057 | } | |
4058 | ||
bcd5357f | 4059 | int |
6d5786a3 | 4060 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4061 | u16 netfid, FILE_ALL_INFO *pFindData) |
4062 | { | |
4063 | struct smb_t2_qfi_req *pSMB = NULL; | |
4064 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4065 | int rc = 0; | |
4066 | int bytes_returned; | |
4067 | __u16 params, byte_count; | |
4068 | ||
4069 | QFileInfoRetry: | |
4070 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4071 | (void **) &pSMBr); | |
4072 | if (rc) | |
4073 | return rc; | |
4074 | ||
4075 | params = 2 /* level */ + 2 /* fid */; | |
4076 | pSMB->t2.TotalDataCount = 0; | |
4077 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4078 | /* BB find exact max data count below from sess structure BB */ | |
4079 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4080 | pSMB->t2.MaxSetupCount = 0; | |
4081 | pSMB->t2.Reserved = 0; | |
4082 | pSMB->t2.Flags = 0; | |
4083 | pSMB->t2.Timeout = 0; | |
4084 | pSMB->t2.Reserved2 = 0; | |
4085 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4086 | Fid) - 4); | |
4087 | pSMB->t2.DataCount = 0; | |
4088 | pSMB->t2.DataOffset = 0; | |
4089 | pSMB->t2.SetupCount = 1; | |
4090 | pSMB->t2.Reserved3 = 0; | |
4091 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4092 | byte_count = params + 1 /* pad */ ; | |
4093 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4094 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4095 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4096 | pSMB->Pad = 0; | |
4097 | pSMB->Fid = netfid; | |
be8e3b00 | 4098 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4099 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4100 | |
bcd5357f JL |
4101 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4102 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4103 | if (rc) { | |
ebcc943c | 4104 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4105 | } else { /* decode response */ |
4106 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4107 | |
bcd5357f JL |
4108 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4109 | rc = -EIO; | |
820a803f | 4110 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4111 | rc = -EIO; /* bad smb */ |
4112 | else if (pFindData) { | |
4113 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4114 | memcpy((char *) pFindData, | |
4115 | (char *) &pSMBr->hdr.Protocol + | |
4116 | data_offset, sizeof(FILE_ALL_INFO)); | |
4117 | } else | |
4118 | rc = -ENOMEM; | |
4119 | } | |
4120 | cifs_buf_release(pSMB); | |
4121 | if (rc == -EAGAIN) | |
4122 | goto QFileInfoRetry; | |
6b8edfe0 | 4123 | |
bcd5357f JL |
4124 | return rc; |
4125 | } | |
6b8edfe0 | 4126 | |
1da177e4 | 4127 | int |
6d5786a3 | 4128 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4129 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4130 | int legacy /* old style infolevel */, |
737b758c | 4131 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4132 | { |
68889f26 | 4133 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4134 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4135 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4136 | int rc = 0; | |
4137 | int bytes_returned; | |
4138 | int name_len; | |
4139 | __u16 params, byte_count; | |
4140 | ||
f96637be | 4141 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4142 | QPathInfoRetry: |
4143 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4144 | (void **) &pSMBr); | |
4145 | if (rc) | |
4146 | return rc; | |
4147 | ||
4148 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4149 | name_len = | |
68889f26 | 4150 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4151 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4152 | name_len++; /* trailing null */ |
4153 | name_len *= 2; | |
50c2f753 | 4154 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4155 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4156 | name_len++; /* trailing null */ |
68889f26 | 4157 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4158 | } |
4159 | ||
50c2f753 | 4160 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4161 | pSMB->TotalDataCount = 0; |
4162 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4163 | /* BB find exact max SMB PDU from sess structure BB */ |
4164 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4165 | pSMB->MaxSetupCount = 0; |
4166 | pSMB->Reserved = 0; | |
4167 | pSMB->Flags = 0; | |
4168 | pSMB->Timeout = 0; | |
4169 | pSMB->Reserved2 = 0; | |
4170 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4171 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4172 | pSMB->DataCount = 0; |
4173 | pSMB->DataOffset = 0; | |
4174 | pSMB->SetupCount = 1; | |
4175 | pSMB->Reserved3 = 0; | |
4176 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4177 | byte_count = params + 1 /* pad */ ; | |
4178 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4179 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4180 | if (legacy) |
acf1a1b1 SF |
4181 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4182 | else | |
4183 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4184 | pSMB->Reserved4 = 0; |
be8e3b00 | 4185 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4186 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4187 | ||
4188 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4189 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4190 | if (rc) { | |
f96637be | 4191 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4192 | } else { /* decode response */ |
4193 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4194 | ||
acf1a1b1 SF |
4195 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4196 | rc = -EIO; | |
820a803f | 4197 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4198 | rc = -EIO; /* bad smb */ |
820a803f | 4199 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4200 | rc = -EIO; /* 24 or 26 expected but we do not read |
4201 | last field */ | |
68889f26 | 4202 | else if (data) { |
acf1a1b1 | 4203 | int size; |
1da177e4 | 4204 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4205 | |
68889f26 PS |
4206 | /* |
4207 | * On legacy responses we do not read the last field, | |
4208 | * EAsize, fortunately since it varies by subdialect and | |
4209 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4210 | * bytes depending but we don't care here. | |
4211 | */ | |
ad7a2926 | 4212 | if (legacy) |
acf1a1b1 SF |
4213 | size = sizeof(FILE_INFO_STANDARD); |
4214 | else | |
4215 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4216 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4217 | data_offset, size); |
1da177e4 LT |
4218 | } else |
4219 | rc = -ENOMEM; | |
4220 | } | |
4221 | cifs_buf_release(pSMB); | |
4222 | if (rc == -EAGAIN) | |
4223 | goto QPathInfoRetry; | |
4224 | ||
4225 | return rc; | |
4226 | } | |
4227 | ||
c8634fd3 | 4228 | int |
6d5786a3 | 4229 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4230 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4231 | { | |
4232 | struct smb_t2_qfi_req *pSMB = NULL; | |
4233 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4234 | int rc = 0; | |
4235 | int bytes_returned; | |
4236 | __u16 params, byte_count; | |
4237 | ||
4238 | UnixQFileInfoRetry: | |
4239 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4240 | (void **) &pSMBr); | |
4241 | if (rc) | |
4242 | return rc; | |
4243 | ||
4244 | params = 2 /* level */ + 2 /* fid */; | |
4245 | pSMB->t2.TotalDataCount = 0; | |
4246 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4247 | /* BB find exact max data count below from sess structure BB */ | |
4248 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4249 | pSMB->t2.MaxSetupCount = 0; | |
4250 | pSMB->t2.Reserved = 0; | |
4251 | pSMB->t2.Flags = 0; | |
4252 | pSMB->t2.Timeout = 0; | |
4253 | pSMB->t2.Reserved2 = 0; | |
4254 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4255 | Fid) - 4); | |
4256 | pSMB->t2.DataCount = 0; | |
4257 | pSMB->t2.DataOffset = 0; | |
4258 | pSMB->t2.SetupCount = 1; | |
4259 | pSMB->t2.Reserved3 = 0; | |
4260 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4261 | byte_count = params + 1 /* pad */ ; | |
4262 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4263 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4264 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4265 | pSMB->Pad = 0; | |
4266 | pSMB->Fid = netfid; | |
be8e3b00 | 4267 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4268 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4269 | |
4270 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4271 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4272 | if (rc) { | |
ebcc943c | 4273 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4274 | } else { /* decode response */ |
4275 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4276 | ||
820a803f | 4277 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4278 | 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 |
4279 | rc = -EIO; /* bad smb */ |
4280 | } else { | |
4281 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4282 | memcpy((char *) pFindData, | |
4283 | (char *) &pSMBr->hdr.Protocol + | |
4284 | data_offset, | |
4285 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4286 | } | |
4287 | } | |
4288 | ||
4289 | cifs_buf_release(pSMB); | |
4290 | if (rc == -EAGAIN) | |
4291 | goto UnixQFileInfoRetry; | |
4292 | ||
4293 | return rc; | |
4294 | } | |
4295 | ||
1da177e4 | 4296 | int |
6d5786a3 | 4297 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4298 | const unsigned char *searchName, |
582d21e5 | 4299 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4300 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4301 | { |
4302 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4303 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4304 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4305 | int rc = 0; | |
4306 | int bytes_returned = 0; | |
4307 | int name_len; | |
4308 | __u16 params, byte_count; | |
4309 | ||
f96637be | 4310 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4311 | UnixQPathInfoRetry: |
4312 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4313 | (void **) &pSMBr); | |
4314 | if (rc) | |
4315 | return rc; | |
4316 | ||
4317 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4318 | name_len = | |
acbbb76a SF |
4319 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4320 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4321 | name_len++; /* trailing null */ |
4322 | name_len *= 2; | |
50c2f753 | 4323 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4324 | name_len = strnlen(searchName, PATH_MAX); |
4325 | name_len++; /* trailing null */ | |
4326 | strncpy(pSMB->FileName, searchName, name_len); | |
4327 | } | |
4328 | ||
50c2f753 | 4329 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4330 | pSMB->TotalDataCount = 0; |
4331 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4332 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4333 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4334 | pSMB->MaxSetupCount = 0; |
4335 | pSMB->Reserved = 0; | |
4336 | pSMB->Flags = 0; | |
4337 | pSMB->Timeout = 0; | |
4338 | pSMB->Reserved2 = 0; | |
4339 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4340 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4341 | pSMB->DataCount = 0; |
4342 | pSMB->DataOffset = 0; | |
4343 | pSMB->SetupCount = 1; | |
4344 | pSMB->Reserved3 = 0; | |
4345 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4346 | byte_count = params + 1 /* pad */ ; | |
4347 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4348 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4349 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4350 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4351 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4352 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4353 | ||
4354 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4355 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4356 | if (rc) { | |
ebcc943c | 4357 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4358 | } else { /* decode response */ |
4359 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4360 | ||
820a803f | 4361 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4362 | 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 |
4363 | rc = -EIO; /* bad smb */ |
4364 | } else { | |
4365 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4366 | memcpy((char *) pFindData, | |
4367 | (char *) &pSMBr->hdr.Protocol + | |
4368 | data_offset, | |
630f3f0c | 4369 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4370 | } |
4371 | } | |
4372 | cifs_buf_release(pSMB); | |
4373 | if (rc == -EAGAIN) | |
4374 | goto UnixQPathInfoRetry; | |
4375 | ||
4376 | return rc; | |
4377 | } | |
4378 | ||
1da177e4 LT |
4379 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4380 | int | |
6d5786a3 | 4381 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4382 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4383 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4384 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4385 | { |
4386 | /* level 257 SMB_ */ | |
4387 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4388 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4389 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4390 | int rc = 0; |
4391 | int bytes_returned = 0; | |
c052e2b4 | 4392 | int name_len, remap; |
1da177e4 | 4393 | __u16 params, byte_count; |
c052e2b4 | 4394 | struct nls_table *nls_codepage; |
1da177e4 | 4395 | |
f96637be | 4396 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4397 | |
4398 | findFirstRetry: | |
4399 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4400 | (void **) &pSMBr); | |
4401 | if (rc) | |
4402 | return rc; | |
4403 | ||
c052e2b4 | 4404 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4405 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4406 | |
1da177e4 LT |
4407 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4408 | name_len = | |
acbbb76a SF |
4409 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4410 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4411 | /* We can not add the asterik earlier in case |
4412 | it got remapped to 0xF03A as if it were part of the | |
4413 | directory name instead of a wildcard */ | |
1da177e4 | 4414 | name_len *= 2; |
c052e2b4 SP |
4415 | if (msearch) { |
4416 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4417 | pSMB->FileName[name_len+1] = 0; | |
4418 | pSMB->FileName[name_len+2] = '*'; | |
4419 | pSMB->FileName[name_len+3] = 0; | |
4420 | name_len += 4; /* now the trailing null */ | |
4421 | /* null terminate just in case */ | |
4422 | pSMB->FileName[name_len] = 0; | |
4423 | pSMB->FileName[name_len+1] = 0; | |
4424 | name_len += 2; | |
4425 | } | |
1da177e4 LT |
4426 | } else { /* BB add check for overrun of SMB buf BB */ |
4427 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4428 | /* BB fix here and in unicode clause above ie |
790fe579 | 4429 | if (name_len > buffersize-header) |
1da177e4 LT |
4430 | free buffer exit; BB */ |
4431 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4432 | if (msearch) { |
4433 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4434 | pSMB->FileName[name_len+1] = '*'; | |
4435 | pSMB->FileName[name_len+2] = 0; | |
4436 | name_len += 3; | |
4437 | } | |
1da177e4 LT |
4438 | } |
4439 | ||
4440 | params = 12 + name_len /* includes null */ ; | |
4441 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4442 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4443 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4444 | pSMB->MaxSetupCount = 0; |
4445 | pSMB->Reserved = 0; | |
4446 | pSMB->Flags = 0; | |
4447 | pSMB->Timeout = 0; | |
4448 | pSMB->Reserved2 = 0; | |
4449 | byte_count = params + 1 /* pad */ ; | |
4450 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4451 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4452 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4453 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4454 | - 4); | |
1da177e4 LT |
4455 | pSMB->DataCount = 0; |
4456 | pSMB->DataOffset = 0; | |
4457 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4458 | pSMB->Reserved3 = 0; | |
4459 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4460 | pSMB->SearchAttributes = | |
4461 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4462 | ATTR_DIRECTORY); | |
50c2f753 | 4463 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4464 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4465 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4466 | ||
4467 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4468 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4469 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4470 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4471 | ||
4472 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4473 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4474 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4475 | |
88274815 SF |
4476 | if (rc) {/* BB add logic to retry regular search if Unix search |
4477 | rejected unexpectedly by server */ | |
1da177e4 | 4478 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4479 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4480 | |
88274815 | 4481 | cifs_buf_release(pSMB); |
1da177e4 LT |
4482 | |
4483 | /* BB eventually could optimize out free and realloc of buf */ | |
4484 | /* for this case */ | |
4485 | if (rc == -EAGAIN) | |
4486 | goto findFirstRetry; | |
4487 | } else { /* decode response */ | |
4488 | /* BB remember to free buffer if error BB */ | |
4489 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4490 | if (rc == 0) { |
b77d753c SF |
4491 | unsigned int lnoff; |
4492 | ||
1da177e4 | 4493 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4494 | psrch_inf->unicode = true; |
1da177e4 | 4495 | else |
4b18f2a9 | 4496 | psrch_inf->unicode = false; |
1da177e4 LT |
4497 | |
4498 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4499 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4500 | psrch_inf->srch_entries_start = |
4501 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4502 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4503 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4504 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4505 | ||
790fe579 | 4506 | if (parms->EndofSearch) |
4b18f2a9 | 4507 | psrch_inf->endOfSearch = true; |
1da177e4 | 4508 | else |
4b18f2a9 | 4509 | psrch_inf->endOfSearch = false; |
1da177e4 | 4510 | |
50c2f753 SF |
4511 | psrch_inf->entries_in_buffer = |
4512 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4513 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4514 | psrch_inf->entries_in_buffer; |
b77d753c | 4515 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4516 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4517 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4518 | psrch_inf->last_entry = NULL; |
4519 | return rc; | |
4520 | } | |
4521 | ||
0752f152 | 4522 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4523 | lnoff; |
4524 | ||
c052e2b4 SP |
4525 | if (pnetfid) |
4526 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4527 | } else { |
4528 | cifs_buf_release(pSMB); | |
4529 | } | |
4530 | } | |
4531 | ||
4532 | return rc; | |
4533 | } | |
4534 | ||
6d5786a3 PS |
4535 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4536 | __u16 searchHandle, __u16 search_flags, | |
4537 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4538 | { |
4539 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4540 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4541 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4542 | char *response_data; |
4543 | int rc = 0; | |
9438fabb JL |
4544 | int bytes_returned; |
4545 | unsigned int name_len; | |
1da177e4 LT |
4546 | __u16 params, byte_count; |
4547 | ||
f96637be | 4548 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4549 | |
4b18f2a9 | 4550 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4551 | return -ENOENT; |
4552 | ||
4553 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4554 | (void **) &pSMBr); | |
4555 | if (rc) | |
4556 | return rc; | |
4557 | ||
50c2f753 | 4558 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4559 | byte_count = 0; |
4560 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4561 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4562 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4563 | pSMB->MaxSetupCount = 0; |
4564 | pSMB->Reserved = 0; | |
4565 | pSMB->Flags = 0; | |
4566 | pSMB->Timeout = 0; | |
4567 | pSMB->Reserved2 = 0; | |
4568 | pSMB->ParameterOffset = cpu_to_le16( | |
4569 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4570 | pSMB->DataCount = 0; | |
4571 | pSMB->DataOffset = 0; | |
4572 | pSMB->SetupCount = 1; | |
4573 | pSMB->Reserved3 = 0; | |
4574 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4575 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4576 | pSMB->SearchCount = | |
630f3f0c | 4577 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4578 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4579 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4580 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4581 | |
4582 | name_len = psrch_inf->resume_name_len; | |
4583 | params += name_len; | |
790fe579 | 4584 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4585 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4586 | byte_count += name_len; | |
ef6724e3 SF |
4587 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4588 | pSMB->ResumeFileName[name_len] = 0; | |
4589 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4590 | } else { |
4591 | rc = -EINVAL; | |
4592 | goto FNext2_err_exit; | |
4593 | } | |
4594 | byte_count = params + 1 /* pad */ ; | |
4595 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4596 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4597 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4598 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4599 | |
1da177e4 LT |
4600 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4601 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4602 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4603 | if (rc) { |
4604 | if (rc == -EBADF) { | |
4b18f2a9 | 4605 | psrch_inf->endOfSearch = true; |
6353450a | 4606 | cifs_buf_release(pSMB); |
50c2f753 | 4607 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4608 | } else |
f96637be | 4609 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4610 | } else { /* decode response */ |
4611 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4612 | |
790fe579 | 4613 | if (rc == 0) { |
b77d753c SF |
4614 | unsigned int lnoff; |
4615 | ||
1da177e4 LT |
4616 | /* BB fixme add lock for file (srch_info) struct here */ |
4617 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4618 | psrch_inf->unicode = true; |
1da177e4 | 4619 | else |
4b18f2a9 | 4620 | psrch_inf->unicode = false; |
1da177e4 LT |
4621 | response_data = (char *) &pSMBr->hdr.Protocol + |
4622 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4623 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4624 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4625 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4626 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4627 | cifs_small_buf_release( |
4628 | psrch_inf->ntwrk_buf_start); | |
4629 | else | |
4630 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4631 | psrch_inf->srch_entries_start = response_data; |
4632 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4633 | psrch_inf->smallBuf = 0; |
790fe579 | 4634 | if (parms->EndofSearch) |
4b18f2a9 | 4635 | psrch_inf->endOfSearch = true; |
1da177e4 | 4636 | else |
4b18f2a9 | 4637 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4638 | psrch_inf->entries_in_buffer = |
4639 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4640 | psrch_inf->index_of_last_entry += |
4641 | psrch_inf->entries_in_buffer; | |
b77d753c | 4642 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4643 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4644 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4645 | psrch_inf->last_entry = NULL; |
4646 | return rc; | |
4647 | } else | |
4648 | psrch_inf->last_entry = | |
4649 | psrch_inf->srch_entries_start + lnoff; | |
4650 | ||
f96637be JP |
4651 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4652 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4653 | |
4654 | /* BB fixme add unlock here */ | |
4655 | } | |
4656 | ||
4657 | } | |
4658 | ||
4659 | /* BB On error, should we leave previous search buf (and count and | |
4660 | last entry fields) intact or free the previous one? */ | |
4661 | ||
4662 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4663 | since file handle passed in no longer valid */ | |
4664 | FNext2_err_exit: | |
4665 | if (rc != 0) | |
4666 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4667 | return rc; |
4668 | } | |
4669 | ||
4670 | int | |
6d5786a3 | 4671 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4672 | const __u16 searchHandle) |
1da177e4 LT |
4673 | { |
4674 | int rc = 0; | |
4675 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4676 | |
f96637be | 4677 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4678 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4679 | ||
4680 | /* no sense returning error if session restarted | |
4681 | as file handle has been closed */ | |
790fe579 | 4682 | if (rc == -EAGAIN) |
1da177e4 LT |
4683 | return 0; |
4684 | if (rc) | |
4685 | return rc; | |
4686 | ||
1da177e4 LT |
4687 | pSMB->FileID = searchHandle; |
4688 | pSMB->ByteCount = 0; | |
792af7b0 | 4689 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4690 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4691 | if (rc) |
f96637be | 4692 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4693 | |
44c58186 | 4694 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4695 | |
4696 | /* Since session is dead, search handle closed on server already */ | |
4697 | if (rc == -EAGAIN) | |
4698 | rc = 0; | |
4699 | ||
4700 | return rc; | |
4701 | } | |
4702 | ||
1da177e4 | 4703 | int |
6d5786a3 | 4704 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4705 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4706 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4707 | { |
4708 | int rc = 0; | |
4709 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4710 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4711 | int name_len, bytes_returned; | |
4712 | __u16 params, byte_count; | |
4713 | ||
f96637be | 4714 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4715 | if (tcon == NULL) |
50c2f753 | 4716 | return -ENODEV; |
1da177e4 LT |
4717 | |
4718 | GetInodeNumberRetry: | |
4719 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4720 | (void **) &pSMBr); |
1da177e4 LT |
4721 | if (rc) |
4722 | return rc; | |
4723 | ||
1da177e4 LT |
4724 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4725 | name_len = | |
acbbb76a | 4726 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4727 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4728 | remap); |
1da177e4 LT |
4729 | name_len++; /* trailing null */ |
4730 | name_len *= 2; | |
50c2f753 | 4731 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4732 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4733 | name_len++; /* trailing null */ |
1208ef1f | 4734 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4735 | } |
4736 | ||
4737 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4738 | pSMB->TotalDataCount = 0; | |
4739 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4740 | /* BB find exact max data count below from sess structure BB */ | |
4741 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4742 | pSMB->MaxSetupCount = 0; | |
4743 | pSMB->Reserved = 0; | |
4744 | pSMB->Flags = 0; | |
4745 | pSMB->Timeout = 0; | |
4746 | pSMB->Reserved2 = 0; | |
4747 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4748 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4749 | pSMB->DataCount = 0; |
4750 | pSMB->DataOffset = 0; | |
4751 | pSMB->SetupCount = 1; | |
4752 | pSMB->Reserved3 = 0; | |
4753 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4754 | byte_count = params + 1 /* pad */ ; | |
4755 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4756 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4757 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4758 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4759 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4760 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4761 | ||
4762 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4763 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4764 | if (rc) { | |
f96637be | 4765 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4766 | } else { |
4767 | /* decode response */ | |
4768 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4769 | /* BB also check enough total bytes returned */ |
820a803f | 4770 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4771 | /* If rc should we check for EOPNOSUPP and |
4772 | disable the srvino flag? or in caller? */ | |
4773 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4774 | else { |
1da177e4 LT |
4775 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4776 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4777 | struct file_internal_info *pfinfo; |
1da177e4 | 4778 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4779 | if (count < 8) { |
f96637be | 4780 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4781 | rc = -EIO; |
4782 | goto GetInodeNumOut; | |
4783 | } | |
4784 | pfinfo = (struct file_internal_info *) | |
4785 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4786 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4787 | } |
4788 | } | |
4789 | GetInodeNumOut: | |
4790 | cifs_buf_release(pSMB); | |
4791 | if (rc == -EAGAIN) | |
4792 | goto GetInodeNumberRetry; | |
4793 | return rc; | |
4794 | } | |
1da177e4 LT |
4795 | |
4796 | int | |
6d5786a3 | 4797 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4798 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4799 | unsigned int *num_of_nodes, |
737b758c | 4800 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4801 | { |
4802 | /* TRANS2_GET_DFS_REFERRAL */ | |
4803 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4804 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4805 | int rc = 0; |
4806 | int bytes_returned; | |
4807 | int name_len; | |
1da177e4 | 4808 | __u16 params, byte_count; |
c2cf07d5 SF |
4809 | *num_of_nodes = 0; |
4810 | *target_nodes = NULL; | |
1da177e4 | 4811 | |
f96637be | 4812 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
bb878884 | 4813 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4814 | return -ENODEV; |
bb878884 | 4815 | |
1da177e4 | 4816 | getDFSRetry: |
bb878884 | 4817 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4818 | (void **) &pSMBr); |
4819 | if (rc) | |
4820 | return rc; | |
50c2f753 SF |
4821 | |
4822 | /* server pointer checked in called function, | |
1982c344 | 4823 | but should never be null here anyway */ |
88257360 | 4824 | pSMB->hdr.Mid = get_next_mid(ses->server); |
bb878884 | 4825 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4826 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4827 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4828 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4829 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4830 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4831 | |
4832 | if (ses->capabilities & CAP_UNICODE) { | |
4833 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4834 | name_len = | |
acbbb76a | 4835 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4836 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4837 | remap); |
1da177e4 LT |
4838 | name_len++; /* trailing null */ |
4839 | name_len *= 2; | |
50c2f753 | 4840 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4841 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4842 | name_len++; /* trailing null */ |
b669f33c | 4843 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4844 | } |
4845 | ||
65c3b205 | 4846 | if (ses->server->sign) |
38d77c50 | 4847 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4848 | |
50c2f753 | 4849 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4850 | |
1da177e4 LT |
4851 | params = 2 /* level */ + name_len /*includes null */ ; |
4852 | pSMB->TotalDataCount = 0; | |
4853 | pSMB->DataCount = 0; | |
4854 | pSMB->DataOffset = 0; | |
4855 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4856 | /* BB find exact max SMB PDU from sess structure BB */ |
4857 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4858 | pSMB->MaxSetupCount = 0; |
4859 | pSMB->Reserved = 0; | |
4860 | pSMB->Flags = 0; | |
4861 | pSMB->Timeout = 0; | |
4862 | pSMB->Reserved2 = 0; | |
4863 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4864 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4865 | pSMB->SetupCount = 1; |
4866 | pSMB->Reserved3 = 0; | |
4867 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4868 | byte_count = params + 3 /* pad */ ; | |
4869 | pSMB->ParameterCount = cpu_to_le16(params); | |
4870 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4871 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4872 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4873 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4874 | ||
4875 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4876 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4877 | if (rc) { | |
f96637be | 4878 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4879 | goto GetDFSRefExit; |
4880 | } | |
4881 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4882 | |
c2cf07d5 | 4883 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4884 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4885 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4886 | goto GetDFSRefExit; |
4887 | } | |
c2cf07d5 | 4888 | |
f96637be JP |
4889 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4890 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4891 | |
fec4585f | 4892 | /* parse returned result into more usable form */ |
4ecce920 AA |
4893 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4894 | le16_to_cpu(pSMBr->t2.DataCount), | |
4895 | num_of_nodes, target_nodes, nls_codepage, | |
4896 | remap, search_name, | |
284316dd | 4897 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4898 | |
1da177e4 | 4899 | GetDFSRefExit: |
0d817bc0 | 4900 | cifs_buf_release(pSMB); |
1da177e4 LT |
4901 | |
4902 | if (rc == -EAGAIN) | |
4903 | goto getDFSRetry; | |
4904 | ||
4905 | return rc; | |
4906 | } | |
4907 | ||
20962438 SF |
4908 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4909 | int | |
6d5786a3 PS |
4910 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4911 | struct kstatfs *FSData) | |
20962438 SF |
4912 | { |
4913 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4914 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4915 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4916 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4917 | int rc = 0; | |
4918 | int bytes_returned = 0; | |
4919 | __u16 params, byte_count; | |
4920 | ||
f96637be | 4921 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4922 | oldQFSInfoRetry: |
4923 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4924 | (void **) &pSMBr); | |
4925 | if (rc) | |
4926 | return rc; | |
20962438 SF |
4927 | |
4928 | params = 2; /* level */ | |
4929 | pSMB->TotalDataCount = 0; | |
4930 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4931 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4932 | pSMB->MaxSetupCount = 0; | |
4933 | pSMB->Reserved = 0; | |
4934 | pSMB->Flags = 0; | |
4935 | pSMB->Timeout = 0; | |
4936 | pSMB->Reserved2 = 0; | |
4937 | byte_count = params + 1 /* pad */ ; | |
4938 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4939 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4940 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4941 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4942 | pSMB->DataCount = 0; | |
4943 | pSMB->DataOffset = 0; | |
4944 | pSMB->SetupCount = 1; | |
4945 | pSMB->Reserved3 = 0; | |
4946 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4947 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4948 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4949 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4950 | ||
4951 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4952 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4953 | if (rc) { | |
f96637be | 4954 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4955 | } else { /* decode response */ |
4956 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4957 | ||
820a803f | 4958 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4959 | rc = -EIO; /* bad smb */ |
4960 | else { | |
4961 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4962 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4963 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4964 | |
50c2f753 | 4965 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4966 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4967 | FSData->f_bsize = | |
4968 | le16_to_cpu(response_data->BytesPerSector) * | |
4969 | le32_to_cpu(response_data-> | |
4970 | SectorsPerAllocationUnit); | |
4971 | FSData->f_blocks = | |
50c2f753 | 4972 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4973 | FSData->f_bfree = FSData->f_bavail = |
4974 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4975 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4976 | (unsigned long long)FSData->f_blocks, | |
4977 | (unsigned long long)FSData->f_bfree, | |
4978 | FSData->f_bsize); | |
20962438 SF |
4979 | } |
4980 | } | |
4981 | cifs_buf_release(pSMB); | |
4982 | ||
4983 | if (rc == -EAGAIN) | |
4984 | goto oldQFSInfoRetry; | |
4985 | ||
4986 | return rc; | |
4987 | } | |
4988 | ||
1da177e4 | 4989 | int |
6d5786a3 PS |
4990 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4991 | struct kstatfs *FSData) | |
1da177e4 LT |
4992 | { |
4993 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4994 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4995 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4996 | FILE_SYSTEM_INFO *response_data; | |
4997 | int rc = 0; | |
4998 | int bytes_returned = 0; | |
4999 | __u16 params, byte_count; | |
5000 | ||
f96637be | 5001 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5002 | QFSInfoRetry: |
5003 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5004 | (void **) &pSMBr); | |
5005 | if (rc) | |
5006 | return rc; | |
5007 | ||
5008 | params = 2; /* level */ | |
5009 | pSMB->TotalDataCount = 0; | |
5010 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5011 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5012 | pSMB->MaxSetupCount = 0; |
5013 | pSMB->Reserved = 0; | |
5014 | pSMB->Flags = 0; | |
5015 | pSMB->Timeout = 0; | |
5016 | pSMB->Reserved2 = 0; | |
5017 | byte_count = params + 1 /* pad */ ; | |
5018 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5019 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5020 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5021 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5022 | pSMB->DataCount = 0; |
5023 | pSMB->DataOffset = 0; | |
5024 | pSMB->SetupCount = 1; | |
5025 | pSMB->Reserved3 = 0; | |
5026 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5027 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5028 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5029 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5030 | ||
5031 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5032 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5033 | if (rc) { | |
f96637be | 5034 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5035 | } else { /* decode response */ |
50c2f753 | 5036 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5037 | |
820a803f | 5038 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5039 | rc = -EIO; /* bad smb */ |
5040 | else { | |
5041 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5042 | |
5043 | response_data = | |
5044 | (FILE_SYSTEM_INFO | |
5045 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5046 | data_offset); | |
5047 | FSData->f_bsize = | |
5048 | le32_to_cpu(response_data->BytesPerSector) * | |
5049 | le32_to_cpu(response_data-> | |
5050 | SectorsPerAllocationUnit); | |
5051 | FSData->f_blocks = | |
5052 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5053 | FSData->f_bfree = FSData->f_bavail = | |
5054 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5055 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5056 | (unsigned long long)FSData->f_blocks, | |
5057 | (unsigned long long)FSData->f_bfree, | |
5058 | FSData->f_bsize); | |
1da177e4 LT |
5059 | } |
5060 | } | |
5061 | cifs_buf_release(pSMB); | |
5062 | ||
5063 | if (rc == -EAGAIN) | |
5064 | goto QFSInfoRetry; | |
5065 | ||
5066 | return rc; | |
5067 | } | |
5068 | ||
5069 | int | |
6d5786a3 | 5070 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5071 | { |
5072 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5073 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5074 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5075 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5076 | int rc = 0; | |
5077 | int bytes_returned = 0; | |
5078 | __u16 params, byte_count; | |
5079 | ||
f96637be | 5080 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5081 | QFSAttributeRetry: |
5082 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5083 | (void **) &pSMBr); | |
5084 | if (rc) | |
5085 | return rc; | |
5086 | ||
5087 | params = 2; /* level */ | |
5088 | pSMB->TotalDataCount = 0; | |
5089 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5090 | /* BB find exact max SMB PDU from sess structure BB */ |
5091 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5092 | pSMB->MaxSetupCount = 0; |
5093 | pSMB->Reserved = 0; | |
5094 | pSMB->Flags = 0; | |
5095 | pSMB->Timeout = 0; | |
5096 | pSMB->Reserved2 = 0; | |
5097 | byte_count = params + 1 /* pad */ ; | |
5098 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5099 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5100 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5101 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5102 | pSMB->DataCount = 0; |
5103 | pSMB->DataOffset = 0; | |
5104 | pSMB->SetupCount = 1; | |
5105 | pSMB->Reserved3 = 0; | |
5106 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5107 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5108 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5109 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5110 | ||
5111 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5112 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5113 | if (rc) { | |
f96637be | 5114 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5115 | } else { /* decode response */ |
5116 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5117 | ||
820a803f | 5118 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5119 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5120 | rc = -EIO; /* bad smb */ |
5121 | } else { | |
5122 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5123 | response_data = | |
5124 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5125 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5126 | data_offset); | |
5127 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5128 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5129 | } |
5130 | } | |
5131 | cifs_buf_release(pSMB); | |
5132 | ||
5133 | if (rc == -EAGAIN) | |
5134 | goto QFSAttributeRetry; | |
5135 | ||
5136 | return rc; | |
5137 | } | |
5138 | ||
5139 | int | |
6d5786a3 | 5140 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5141 | { |
5142 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5143 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5144 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5145 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5146 | int rc = 0; | |
5147 | int bytes_returned = 0; | |
5148 | __u16 params, byte_count; | |
5149 | ||
f96637be | 5150 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5151 | QFSDeviceRetry: |
5152 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5153 | (void **) &pSMBr); | |
5154 | if (rc) | |
5155 | return rc; | |
5156 | ||
5157 | params = 2; /* level */ | |
5158 | pSMB->TotalDataCount = 0; | |
5159 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5160 | /* BB find exact max SMB PDU from sess structure BB */ |
5161 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5162 | pSMB->MaxSetupCount = 0; |
5163 | pSMB->Reserved = 0; | |
5164 | pSMB->Flags = 0; | |
5165 | pSMB->Timeout = 0; | |
5166 | pSMB->Reserved2 = 0; | |
5167 | byte_count = params + 1 /* pad */ ; | |
5168 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5169 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5170 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5171 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5172 | |
5173 | pSMB->DataCount = 0; | |
5174 | pSMB->DataOffset = 0; | |
5175 | pSMB->SetupCount = 1; | |
5176 | pSMB->Reserved3 = 0; | |
5177 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5178 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5179 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5180 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5181 | ||
5182 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5183 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5184 | if (rc) { | |
f96637be | 5185 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5186 | } else { /* decode response */ |
5187 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5188 | ||
820a803f JL |
5189 | if (rc || get_bcc(&pSMBr->hdr) < |
5190 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5191 | rc = -EIO; /* bad smb */ |
5192 | else { | |
5193 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5194 | response_data = | |
737b758c SF |
5195 | (FILE_SYSTEM_DEVICE_INFO *) |
5196 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5197 | data_offset); |
5198 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5199 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5200 | } |
5201 | } | |
5202 | cifs_buf_release(pSMB); | |
5203 | ||
5204 | if (rc == -EAGAIN) | |
5205 | goto QFSDeviceRetry; | |
5206 | ||
5207 | return rc; | |
5208 | } | |
5209 | ||
5210 | int | |
6d5786a3 | 5211 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5212 | { |
5213 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5214 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5215 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5216 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5217 | int rc = 0; | |
5218 | int bytes_returned = 0; | |
5219 | __u16 params, byte_count; | |
5220 | ||
f96637be | 5221 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5222 | QFSUnixRetry: |
f569599a JL |
5223 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5224 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5225 | if (rc) |
5226 | return rc; | |
5227 | ||
5228 | params = 2; /* level */ | |
5229 | pSMB->TotalDataCount = 0; | |
5230 | pSMB->DataCount = 0; | |
5231 | pSMB->DataOffset = 0; | |
5232 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5233 | /* BB find exact max SMB PDU from sess structure BB */ |
5234 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5235 | pSMB->MaxSetupCount = 0; |
5236 | pSMB->Reserved = 0; | |
5237 | pSMB->Flags = 0; | |
5238 | pSMB->Timeout = 0; | |
5239 | pSMB->Reserved2 = 0; | |
5240 | byte_count = params + 1 /* pad */ ; | |
5241 | pSMB->ParameterCount = cpu_to_le16(params); | |
5242 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5243 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5244 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5245 | pSMB->SetupCount = 1; |
5246 | pSMB->Reserved3 = 0; | |
5247 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5248 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5249 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5250 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5251 | ||
5252 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5253 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5254 | if (rc) { | |
f96637be | 5255 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5256 | } else { /* decode response */ |
5257 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5258 | ||
820a803f | 5259 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5260 | rc = -EIO; /* bad smb */ |
5261 | } else { | |
5262 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5263 | response_data = | |
5264 | (FILE_SYSTEM_UNIX_INFO | |
5265 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5266 | data_offset); | |
5267 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5268 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5269 | } |
5270 | } | |
5271 | cifs_buf_release(pSMB); | |
5272 | ||
5273 | if (rc == -EAGAIN) | |
5274 | goto QFSUnixRetry; | |
5275 | ||
5276 | ||
5277 | return rc; | |
5278 | } | |
5279 | ||
ac67055e | 5280 | int |
6d5786a3 | 5281 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5282 | { |
5283 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5284 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5285 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5286 | int rc = 0; | |
5287 | int bytes_returned = 0; | |
5288 | __u16 params, param_offset, offset, byte_count; | |
5289 | ||
f96637be | 5290 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5291 | SETFSUnixRetry: |
f26282c9 | 5292 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5293 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5294 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5295 | if (rc) |
5296 | return rc; | |
5297 | ||
5298 | params = 4; /* 2 bytes zero followed by info level. */ | |
5299 | pSMB->MaxSetupCount = 0; | |
5300 | pSMB->Reserved = 0; | |
5301 | pSMB->Flags = 0; | |
5302 | pSMB->Timeout = 0; | |
5303 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5304 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5305 | - 4; | |
ac67055e JA |
5306 | offset = param_offset + params; |
5307 | ||
5308 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5309 | /* BB find exact max SMB PDU from sess structure BB */ |
5310 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5311 | pSMB->SetupCount = 1; |
5312 | pSMB->Reserved3 = 0; | |
5313 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5314 | byte_count = 1 /* pad */ + params + 12; | |
5315 | ||
5316 | pSMB->DataCount = cpu_to_le16(12); | |
5317 | pSMB->ParameterCount = cpu_to_le16(params); | |
5318 | pSMB->TotalDataCount = pSMB->DataCount; | |
5319 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5320 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5321 | pSMB->DataOffset = cpu_to_le16(offset); | |
5322 | ||
5323 | /* Params. */ | |
5324 | pSMB->FileNum = 0; | |
5325 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5326 | ||
5327 | /* Data. */ | |
5328 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5329 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5330 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5331 | ||
be8e3b00 | 5332 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5333 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5334 | ||
5335 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5336 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5337 | if (rc) { | |
f96637be | 5338 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5339 | } else { /* decode response */ |
5340 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5341 | if (rc) |
ac67055e | 5342 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5343 | } |
5344 | cifs_buf_release(pSMB); | |
5345 | ||
5346 | if (rc == -EAGAIN) | |
5347 | goto SETFSUnixRetry; | |
5348 | ||
5349 | return rc; | |
5350 | } | |
5351 | ||
5352 | ||
1da177e4 LT |
5353 | |
5354 | int | |
6d5786a3 | 5355 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5356 | struct kstatfs *FSData) |
1da177e4 LT |
5357 | { |
5358 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5359 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5360 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5361 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5362 | int rc = 0; | |
5363 | int bytes_returned = 0; | |
5364 | __u16 params, byte_count; | |
5365 | ||
f96637be | 5366 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5367 | QFSPosixRetry: |
5368 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5369 | (void **) &pSMBr); | |
5370 | if (rc) | |
5371 | return rc; | |
5372 | ||
5373 | params = 2; /* level */ | |
5374 | pSMB->TotalDataCount = 0; | |
5375 | pSMB->DataCount = 0; | |
5376 | pSMB->DataOffset = 0; | |
5377 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5378 | /* BB find exact max SMB PDU from sess structure BB */ |
5379 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5380 | pSMB->MaxSetupCount = 0; |
5381 | pSMB->Reserved = 0; | |
5382 | pSMB->Flags = 0; | |
5383 | pSMB->Timeout = 0; | |
5384 | pSMB->Reserved2 = 0; | |
5385 | byte_count = params + 1 /* pad */ ; | |
5386 | pSMB->ParameterCount = cpu_to_le16(params); | |
5387 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5388 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5389 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5390 | pSMB->SetupCount = 1; |
5391 | pSMB->Reserved3 = 0; | |
5392 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5393 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5394 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5395 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5396 | ||
5397 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5398 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5399 | if (rc) { | |
f96637be | 5400 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5401 | } else { /* decode response */ |
5402 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5403 | ||
820a803f | 5404 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5405 | rc = -EIO; /* bad smb */ |
5406 | } else { | |
5407 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5408 | response_data = | |
5409 | (FILE_SYSTEM_POSIX_INFO | |
5410 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5411 | data_offset); | |
5412 | FSData->f_bsize = | |
5413 | le32_to_cpu(response_data->BlockSize); | |
5414 | FSData->f_blocks = | |
5415 | le64_to_cpu(response_data->TotalBlocks); | |
5416 | FSData->f_bfree = | |
5417 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5418 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5419 | FSData->f_bavail = FSData->f_bfree; |
5420 | } else { | |
5421 | FSData->f_bavail = | |
50c2f753 | 5422 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5423 | } |
790fe579 | 5424 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5425 | FSData->f_files = |
50c2f753 | 5426 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5427 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5428 | FSData->f_ffree = |
50c2f753 | 5429 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5430 | } |
5431 | } | |
5432 | cifs_buf_release(pSMB); | |
5433 | ||
5434 | if (rc == -EAGAIN) | |
5435 | goto QFSPosixRetry; | |
5436 | ||
5437 | return rc; | |
5438 | } | |
5439 | ||
5440 | ||
d1433418 PS |
5441 | /* |
5442 | * We can not use write of zero bytes trick to set file size due to need for | |
5443 | * large file support. Also note that this SetPathInfo is preferred to | |
5444 | * SetFileInfo based method in next routine which is only needed to work around | |
5445 | * a sharing violation bugin Samba which this routine can run into. | |
5446 | */ | |
1da177e4 | 5447 | int |
6d5786a3 | 5448 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5449 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5450 | bool set_allocation) | |
1da177e4 LT |
5451 | { |
5452 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5453 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5454 | struct file_end_of_file_info *parm_data; | |
5455 | int name_len; | |
5456 | int rc = 0; | |
5457 | int bytes_returned = 0; | |
2baa2682 | 5458 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5459 | |
1da177e4 LT |
5460 | __u16 params, byte_count, data_count, param_offset, offset; |
5461 | ||
f96637be | 5462 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5463 | SetEOFRetry: |
5464 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5465 | (void **) &pSMBr); | |
5466 | if (rc) | |
5467 | return rc; | |
5468 | ||
5469 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5470 | name_len = | |
d1433418 PS |
5471 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5472 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5473 | name_len++; /* trailing null */ |
5474 | name_len *= 2; | |
3e87d803 | 5475 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5476 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5477 | name_len++; /* trailing null */ |
d1433418 | 5478 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5479 | } |
5480 | params = 6 + name_len; | |
26f57364 | 5481 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5482 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5483 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5484 | pSMB->MaxSetupCount = 0; |
5485 | pSMB->Reserved = 0; | |
5486 | pSMB->Flags = 0; | |
5487 | pSMB->Timeout = 0; | |
5488 | pSMB->Reserved2 = 0; | |
5489 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5490 | InformationLevel) - 4; |
1da177e4 | 5491 | offset = param_offset + params; |
d1433418 | 5492 | if (set_allocation) { |
50c2f753 SF |
5493 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5494 | pSMB->InformationLevel = | |
5495 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5496 | else | |
5497 | pSMB->InformationLevel = | |
5498 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5499 | } else /* Set File Size */ { | |
1da177e4 LT |
5500 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5501 | pSMB->InformationLevel = | |
50c2f753 | 5502 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5503 | else |
5504 | pSMB->InformationLevel = | |
50c2f753 | 5505 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5506 | } |
5507 | ||
5508 | parm_data = | |
5509 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5510 | offset); | |
5511 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5512 | pSMB->DataOffset = cpu_to_le16(offset); | |
5513 | pSMB->SetupCount = 1; | |
5514 | pSMB->Reserved3 = 0; | |
5515 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5516 | byte_count = 3 /* pad */ + params + data_count; | |
5517 | pSMB->DataCount = cpu_to_le16(data_count); | |
5518 | pSMB->TotalDataCount = pSMB->DataCount; | |
5519 | pSMB->ParameterCount = cpu_to_le16(params); | |
5520 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5521 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5522 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5523 | parm_data->FileSize = cpu_to_le64(size); |
5524 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5525 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5526 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5527 | if (rc) |
f96637be | 5528 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5529 | |
5530 | cifs_buf_release(pSMB); | |
5531 | ||
5532 | if (rc == -EAGAIN) | |
5533 | goto SetEOFRetry; | |
5534 | ||
5535 | return rc; | |
5536 | } | |
5537 | ||
5538 | int | |
d1433418 PS |
5539 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5540 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5541 | { |
5542 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5543 | struct file_end_of_file_info *parm_data; |
5544 | int rc = 0; | |
1da177e4 LT |
5545 | __u16 params, param_offset, offset, byte_count, count; |
5546 | ||
f96637be JP |
5547 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5548 | (long long)size); | |
cd63499c SF |
5549 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5550 | ||
1da177e4 LT |
5551 | if (rc) |
5552 | return rc; | |
5553 | ||
d1433418 PS |
5554 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5555 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5556 | |
1da177e4 LT |
5557 | params = 6; |
5558 | pSMB->MaxSetupCount = 0; | |
5559 | pSMB->Reserved = 0; | |
5560 | pSMB->Flags = 0; | |
5561 | pSMB->Timeout = 0; | |
5562 | pSMB->Reserved2 = 0; | |
5563 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5564 | offset = param_offset + params; | |
5565 | ||
1da177e4 LT |
5566 | count = sizeof(struct file_end_of_file_info); |
5567 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5568 | /* BB find exact max SMB PDU from sess structure BB */ |
5569 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5570 | pSMB->SetupCount = 1; |
5571 | pSMB->Reserved3 = 0; | |
5572 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5573 | byte_count = 3 /* pad */ + params + count; | |
5574 | pSMB->DataCount = cpu_to_le16(count); | |
5575 | pSMB->ParameterCount = cpu_to_le16(params); | |
5576 | pSMB->TotalDataCount = pSMB->DataCount; | |
5577 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5578 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5579 | parm_data = | |
50c2f753 SF |
5580 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5581 | + offset); | |
1da177e4 LT |
5582 | pSMB->DataOffset = cpu_to_le16(offset); |
5583 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5584 | pSMB->Fid = cfile->fid.netfid; |
5585 | if (set_allocation) { | |
1da177e4 LT |
5586 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5587 | pSMB->InformationLevel = | |
5588 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5589 | else | |
5590 | pSMB->InformationLevel = | |
5591 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5592 | } else /* Set File Size */ { |
1da177e4 LT |
5593 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5594 | pSMB->InformationLevel = | |
50c2f753 | 5595 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5596 | else |
5597 | pSMB->InformationLevel = | |
50c2f753 | 5598 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5599 | } |
5600 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5601 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5602 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5603 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5604 | cifs_small_buf_release(pSMB); |
1da177e4 | 5605 | if (rc) { |
f96637be JP |
5606 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5607 | rc); | |
1da177e4 LT |
5608 | } |
5609 | ||
50c2f753 | 5610 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5611 | since file handle passed in no longer valid */ |
5612 | ||
5613 | return rc; | |
5614 | } | |
5615 | ||
50c2f753 | 5616 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5617 | an open handle, rather than by pathname - this is awkward due to |
5618 | potential access conflicts on the open, but it is unavoidable for these | |
5619 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5620 | time and resort to the original setpathinfo level which takes the ancient | |
5621 | DOS time format with 2 second granularity */ | |
5622 | int | |
6d5786a3 | 5623 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5624 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5625 | { |
5626 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5627 | char *data_offset; |
5628 | int rc = 0; | |
1da177e4 LT |
5629 | __u16 params, param_offset, offset, byte_count, count; |
5630 | ||
f96637be | 5631 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5632 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5633 | ||
1da177e4 LT |
5634 | if (rc) |
5635 | return rc; | |
5636 | ||
2dd2dfa0 JL |
5637 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5638 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5639 | |
1da177e4 LT |
5640 | params = 6; |
5641 | pSMB->MaxSetupCount = 0; | |
5642 | pSMB->Reserved = 0; | |
5643 | pSMB->Flags = 0; | |
5644 | pSMB->Timeout = 0; | |
5645 | pSMB->Reserved2 = 0; | |
5646 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5647 | offset = param_offset + params; | |
5648 | ||
b2a3ad9c JL |
5649 | data_offset = (char *)pSMB + |
5650 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5651 | |
26f57364 | 5652 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5653 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5654 | /* BB find max SMB PDU from sess */ |
5655 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5656 | pSMB->SetupCount = 1; |
5657 | pSMB->Reserved3 = 0; | |
5658 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5659 | byte_count = 3 /* pad */ + params + count; | |
5660 | pSMB->DataCount = cpu_to_le16(count); | |
5661 | pSMB->ParameterCount = cpu_to_le16(params); | |
5662 | pSMB->TotalDataCount = pSMB->DataCount; | |
5663 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5664 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5665 | pSMB->DataOffset = cpu_to_le16(offset); | |
5666 | pSMB->Fid = fid; | |
5667 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5668 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5669 | else | |
5670 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5671 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5672 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5673 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5674 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5675 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5676 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5677 | if (rc) |
f96637be JP |
5678 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5679 | rc); | |
1da177e4 | 5680 | |
50c2f753 | 5681 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5682 | since file handle passed in no longer valid */ |
5683 | ||
5684 | return rc; | |
5685 | } | |
5686 | ||
6d22f098 | 5687 | int |
6d5786a3 | 5688 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5689 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5690 | { | |
5691 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5692 | char *data_offset; | |
5693 | int rc = 0; | |
5694 | __u16 params, param_offset, offset, byte_count, count; | |
5695 | ||
f96637be | 5696 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5697 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5698 | ||
5699 | if (rc) | |
5700 | return rc; | |
5701 | ||
5702 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5703 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5704 | ||
5705 | params = 6; | |
5706 | pSMB->MaxSetupCount = 0; | |
5707 | pSMB->Reserved = 0; | |
5708 | pSMB->Flags = 0; | |
5709 | pSMB->Timeout = 0; | |
5710 | pSMB->Reserved2 = 0; | |
5711 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5712 | offset = param_offset + params; | |
5713 | ||
5714 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5715 | ||
5716 | count = 1; | |
5717 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5718 | /* BB find max SMB PDU from sess */ | |
5719 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5720 | pSMB->SetupCount = 1; | |
5721 | pSMB->Reserved3 = 0; | |
5722 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5723 | byte_count = 3 /* pad */ + params + count; | |
5724 | pSMB->DataCount = cpu_to_le16(count); | |
5725 | pSMB->ParameterCount = cpu_to_le16(params); | |
5726 | pSMB->TotalDataCount = pSMB->DataCount; | |
5727 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5728 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5729 | pSMB->DataOffset = cpu_to_le16(offset); | |
5730 | pSMB->Fid = fid; | |
5731 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5732 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5733 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5734 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5735 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5736 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5737 | cifs_small_buf_release(pSMB); |
6d22f098 | 5738 | if (rc) |
f96637be | 5739 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5740 | |
5741 | return rc; | |
5742 | } | |
1da177e4 LT |
5743 | |
5744 | int | |
6d5786a3 | 5745 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5746 | const char *fileName, const FILE_BASIC_INFO *data, |
5747 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5748 | { |
5749 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5750 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5751 | int name_len; | |
5752 | int rc = 0; | |
5753 | int bytes_returned = 0; | |
5754 | char *data_offset; | |
5755 | __u16 params, param_offset, offset, byte_count, count; | |
5756 | ||
f96637be | 5757 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5758 | |
5759 | SetTimesRetry: | |
5760 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5761 | (void **) &pSMBr); | |
5762 | if (rc) | |
5763 | return rc; | |
5764 | ||
5765 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5766 | name_len = | |
acbbb76a SF |
5767 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5768 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5769 | name_len++; /* trailing null */ |
5770 | name_len *= 2; | |
50c2f753 | 5771 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5772 | name_len = strnlen(fileName, PATH_MAX); |
5773 | name_len++; /* trailing null */ | |
5774 | strncpy(pSMB->FileName, fileName, name_len); | |
5775 | } | |
5776 | ||
5777 | params = 6 + name_len; | |
26f57364 | 5778 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5779 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5780 | /* BB find max SMB PDU from sess structure BB */ |
5781 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5782 | pSMB->MaxSetupCount = 0; |
5783 | pSMB->Reserved = 0; | |
5784 | pSMB->Flags = 0; | |
5785 | pSMB->Timeout = 0; | |
5786 | pSMB->Reserved2 = 0; | |
5787 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5788 | InformationLevel) - 4; |
1da177e4 LT |
5789 | offset = param_offset + params; |
5790 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5791 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5792 | pSMB->DataOffset = cpu_to_le16(offset); | |
5793 | pSMB->SetupCount = 1; | |
5794 | pSMB->Reserved3 = 0; | |
5795 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5796 | byte_count = 3 /* pad */ + params + count; | |
5797 | ||
5798 | pSMB->DataCount = cpu_to_le16(count); | |
5799 | pSMB->ParameterCount = cpu_to_le16(params); | |
5800 | pSMB->TotalDataCount = pSMB->DataCount; | |
5801 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5802 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5803 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5804 | else | |
5805 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5806 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5807 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5808 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5809 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5810 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5811 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5812 | if (rc) |
f96637be | 5813 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5814 | |
5815 | cifs_buf_release(pSMB); | |
5816 | ||
5817 | if (rc == -EAGAIN) | |
5818 | goto SetTimesRetry; | |
5819 | ||
5820 | return rc; | |
5821 | } | |
5822 | ||
5823 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5824 | /* Can be used to set attributes */ | |
5825 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5826 | handling it anyway and NT4 was what we thought it would be needed for | |
5827 | Do not delete it until we prove whether needed for Win9x though */ | |
5828 | int | |
6d5786a3 | 5829 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5830 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5831 | { | |
5832 | SETATTR_REQ *pSMB = NULL; | |
5833 | SETATTR_RSP *pSMBr = NULL; | |
5834 | int rc = 0; | |
5835 | int bytes_returned; | |
5836 | int name_len; | |
5837 | ||
f96637be | 5838 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5839 | |
5840 | SetAttrLgcyRetry: | |
5841 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5842 | (void **) &pSMBr); | |
5843 | if (rc) | |
5844 | return rc; | |
5845 | ||
5846 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5847 | name_len = | |
acbbb76a SF |
5848 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5849 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5850 | name_len++; /* trailing null */ |
5851 | name_len *= 2; | |
50c2f753 | 5852 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5853 | name_len = strnlen(fileName, PATH_MAX); |
5854 | name_len++; /* trailing null */ | |
5855 | strncpy(pSMB->fileName, fileName, name_len); | |
5856 | } | |
5857 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5858 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5859 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5860 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5861 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5862 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5863 | if (rc) |
f96637be | 5864 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5865 | |
5866 | cifs_buf_release(pSMB); | |
5867 | ||
5868 | if (rc == -EAGAIN) | |
5869 | goto SetAttrLgcyRetry; | |
5870 | ||
5871 | return rc; | |
5872 | } | |
5873 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5874 | ||
654cf14a JL |
5875 | static void |
5876 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5877 | const struct cifs_unix_set_info_args *args) | |
5878 | { | |
49418b2c | 5879 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5880 | u64 mode = args->mode; |
5881 | ||
49418b2c EB |
5882 | if (uid_valid(args->uid)) |
5883 | uid = from_kuid(&init_user_ns, args->uid); | |
5884 | if (gid_valid(args->gid)) | |
5885 | gid = from_kgid(&init_user_ns, args->gid); | |
5886 | ||
654cf14a JL |
5887 | /* |
5888 | * Samba server ignores set of file size to zero due to bugs in some | |
5889 | * older clients, but we should be precise - we use SetFileSize to | |
5890 | * set file size and do not want to truncate file size to zero | |
25985edc | 5891 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5892 | * zero instead of -1 here |
5893 | */ | |
5894 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5895 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5896 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5897 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5898 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5899 | data_offset->Uid = cpu_to_le64(uid); |
5900 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5901 | /* better to leave device as zero when it is */ |
5902 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5903 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5904 | data_offset->Permissions = cpu_to_le64(mode); | |
5905 | ||
5906 | if (S_ISREG(mode)) | |
5907 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5908 | else if (S_ISDIR(mode)) | |
5909 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5910 | else if (S_ISLNK(mode)) | |
5911 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5912 | else if (S_ISCHR(mode)) | |
5913 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5914 | else if (S_ISBLK(mode)) | |
5915 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5916 | else if (S_ISFIFO(mode)) | |
5917 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5918 | else if (S_ISSOCK(mode)) | |
5919 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5920 | } | |
5921 | ||
3bbeeb3c | 5922 | int |
6d5786a3 | 5923 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5924 | const struct cifs_unix_set_info_args *args, |
5925 | u16 fid, u32 pid_of_opener) | |
5926 | { | |
5927 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5928 | char *data_offset; |
3bbeeb3c JL |
5929 | int rc = 0; |
5930 | u16 params, param_offset, offset, byte_count, count; | |
5931 | ||
f96637be | 5932 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5933 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5934 | ||
5935 | if (rc) | |
5936 | return rc; | |
5937 | ||
5938 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5939 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5940 | ||
5941 | params = 6; | |
5942 | pSMB->MaxSetupCount = 0; | |
5943 | pSMB->Reserved = 0; | |
5944 | pSMB->Flags = 0; | |
5945 | pSMB->Timeout = 0; | |
5946 | pSMB->Reserved2 = 0; | |
5947 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5948 | offset = param_offset + params; | |
5949 | ||
b2a3ad9c JL |
5950 | data_offset = (char *)pSMB + |
5951 | offsetof(struct smb_hdr, Protocol) + offset; | |
5952 | ||
3bbeeb3c JL |
5953 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5954 | ||
5955 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5956 | /* BB find max SMB PDU from sess */ | |
5957 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5958 | pSMB->SetupCount = 1; | |
5959 | pSMB->Reserved3 = 0; | |
5960 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5961 | byte_count = 3 /* pad */ + params + count; | |
5962 | pSMB->DataCount = cpu_to_le16(count); | |
5963 | pSMB->ParameterCount = cpu_to_le16(params); | |
5964 | pSMB->TotalDataCount = pSMB->DataCount; | |
5965 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5966 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5967 | pSMB->DataOffset = cpu_to_le16(offset); | |
5968 | pSMB->Fid = fid; | |
5969 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5970 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5971 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5972 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5973 | ||
b2a3ad9c | 5974 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5975 | |
792af7b0 | 5976 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5977 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 5978 | if (rc) |
f96637be JP |
5979 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5980 | rc); | |
3bbeeb3c JL |
5981 | |
5982 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5983 | since file handle passed in no longer valid */ | |
5984 | ||
5985 | return rc; | |
5986 | } | |
5987 | ||
1da177e4 | 5988 | int |
6d5786a3 | 5989 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5990 | const char *file_name, |
01ea95e3 JL |
5991 | const struct cifs_unix_set_info_args *args, |
5992 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5993 | { |
5994 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5995 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5996 | int name_len; | |
5997 | int rc = 0; | |
5998 | int bytes_returned = 0; | |
5999 | FILE_UNIX_BASIC_INFO *data_offset; | |
6000 | __u16 params, param_offset, offset, count, byte_count; | |
6001 | ||
f96637be | 6002 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6003 | setPermsRetry: |
6004 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6005 | (void **) &pSMBr); | |
6006 | if (rc) | |
6007 | return rc; | |
6008 | ||
6009 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6010 | name_len = | |
ff691e96 | 6011 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6012 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6013 | name_len++; /* trailing null */ |
6014 | name_len *= 2; | |
3e87d803 | 6015 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6016 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6017 | name_len++; /* trailing null */ |
ff691e96 | 6018 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6019 | } |
6020 | ||
6021 | params = 6 + name_len; | |
26f57364 | 6022 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6023 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6024 | /* BB find max SMB PDU from sess structure BB */ |
6025 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6026 | pSMB->MaxSetupCount = 0; |
6027 | pSMB->Reserved = 0; | |
6028 | pSMB->Flags = 0; | |
6029 | pSMB->Timeout = 0; | |
6030 | pSMB->Reserved2 = 0; | |
6031 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6032 | InformationLevel) - 4; |
1da177e4 LT |
6033 | offset = param_offset + params; |
6034 | data_offset = | |
6035 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6036 | offset); | |
6037 | memset(data_offset, 0, count); | |
6038 | pSMB->DataOffset = cpu_to_le16(offset); | |
6039 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6040 | pSMB->SetupCount = 1; | |
6041 | pSMB->Reserved3 = 0; | |
6042 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6043 | byte_count = 3 /* pad */ + params + count; | |
6044 | pSMB->ParameterCount = cpu_to_le16(params); | |
6045 | pSMB->DataCount = cpu_to_le16(count); | |
6046 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6047 | pSMB->TotalDataCount = pSMB->DataCount; | |
6048 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6049 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6050 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6051 | |
654cf14a | 6052 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6053 | |
6054 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6055 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6056 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6057 | if (rc) |
f96637be | 6058 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6059 | |
0d817bc0 | 6060 | cifs_buf_release(pSMB); |
1da177e4 LT |
6061 | if (rc == -EAGAIN) |
6062 | goto setPermsRetry; | |
6063 | return rc; | |
6064 | } | |
6065 | ||
1da177e4 | 6066 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6067 | /* |
6068 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6069 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6070 | * it looks for that attribute name and stuffs that value into the EAData | |
6071 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6072 | * buffer. In both cases, the return value is either the length of the | |
6073 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6074 | * the data isn't copied to it, but the length is returned. | |
6075 | */ | |
1da177e4 | 6076 | ssize_t |
6d5786a3 | 6077 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6078 | const unsigned char *searchName, const unsigned char *ea_name, |
6079 | char *EAData, size_t buf_size, | |
67b4c889 | 6080 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6081 | { |
6082 | /* BB assumes one setup word */ | |
6083 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6084 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
6085 | int remap = cifs_remap(cifs_sb); |
6086 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
6087 | int rc = 0; |
6088 | int bytes_returned; | |
6e462b9f | 6089 | int list_len; |
f0d3868b | 6090 | struct fealist *ea_response_data; |
50c2f753 SF |
6091 | struct fea *temp_fea; |
6092 | char *temp_ptr; | |
0cd126b5 | 6093 | char *end_of_smb; |
f0d3868b | 6094 | __u16 params, byte_count, data_offset; |
5980fc96 | 6095 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6096 | |
f96637be | 6097 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6098 | QAllEAsRetry: |
6099 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6100 | (void **) &pSMBr); | |
6101 | if (rc) | |
6102 | return rc; | |
6103 | ||
6104 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6105 | list_len = |
acbbb76a SF |
6106 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6107 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6108 | list_len++; /* trailing null */ |
6109 | list_len *= 2; | |
1da177e4 | 6110 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6111 | list_len = strnlen(searchName, PATH_MAX); |
6112 | list_len++; /* trailing null */ | |
6113 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6114 | } |
6115 | ||
6e462b9f | 6116 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6117 | pSMB->TotalDataCount = 0; |
6118 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6119 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6120 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6121 | pSMB->MaxSetupCount = 0; |
6122 | pSMB->Reserved = 0; | |
6123 | pSMB->Flags = 0; | |
6124 | pSMB->Timeout = 0; | |
6125 | pSMB->Reserved2 = 0; | |
6126 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6127 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6128 | pSMB->DataCount = 0; |
6129 | pSMB->DataOffset = 0; | |
6130 | pSMB->SetupCount = 1; | |
6131 | pSMB->Reserved3 = 0; | |
6132 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6133 | byte_count = params + 1 /* pad */ ; | |
6134 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6135 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6136 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6137 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6138 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6139 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6140 | ||
6141 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6142 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6143 | if (rc) { | |
f96637be | 6144 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6145 | goto QAllEAsOut; |
6146 | } | |
1da177e4 | 6147 | |
f0d3868b JL |
6148 | |
6149 | /* BB also check enough total bytes returned */ | |
6150 | /* BB we need to improve the validity checking | |
6151 | of these trans2 responses */ | |
6152 | ||
6153 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6154 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6155 | rc = -EIO; /* bad smb */ |
6156 | goto QAllEAsOut; | |
6157 | } | |
6158 | ||
6159 | /* check that length of list is not more than bcc */ | |
6160 | /* check that each entry does not go beyond length | |
6161 | of list */ | |
6162 | /* check that each element of each entry does not | |
6163 | go beyond end of list */ | |
6164 | /* validate_trans2_offsets() */ | |
6165 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6166 | ||
6167 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6168 | ea_response_data = (struct fealist *) | |
6169 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6170 | ||
6e462b9f | 6171 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6172 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6173 | if (list_len <= 8) { |
f96637be | 6174 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6175 | /* didn't find the named attribute */ |
6176 | if (ea_name) | |
6177 | rc = -ENODATA; | |
f0d3868b JL |
6178 | goto QAllEAsOut; |
6179 | } | |
6180 | ||
0cd126b5 | 6181 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6182 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6183 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6184 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6185 | rc = -EIO; |
6186 | goto QAllEAsOut; | |
6187 | } | |
6188 | ||
f0d3868b | 6189 | /* account for ea list len */ |
6e462b9f | 6190 | list_len -= 4; |
f0d3868b JL |
6191 | temp_fea = ea_response_data->list; |
6192 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6193 | while (list_len > 0) { |
122ca007 | 6194 | unsigned int name_len; |
f0d3868b | 6195 | __u16 value_len; |
0cd126b5 | 6196 | |
6e462b9f | 6197 | list_len -= 4; |
f0d3868b | 6198 | temp_ptr += 4; |
0cd126b5 JL |
6199 | /* make sure we can read name_len and value_len */ |
6200 | if (list_len < 0) { | |
f96637be | 6201 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6202 | rc = -EIO; |
6203 | goto QAllEAsOut; | |
6204 | } | |
6205 | ||
6206 | name_len = temp_fea->name_len; | |
6207 | value_len = le16_to_cpu(temp_fea->value_len); | |
6208 | list_len -= name_len + 1 + value_len; | |
6209 | if (list_len < 0) { | |
f96637be | 6210 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6211 | rc = -EIO; |
6212 | goto QAllEAsOut; | |
6213 | } | |
6214 | ||
31c0519f | 6215 | if (ea_name) { |
91d065c4 | 6216 | if (ea_name_len == name_len && |
ac423446 | 6217 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6218 | temp_ptr += name_len + 1; |
6219 | rc = value_len; | |
6220 | if (buf_size == 0) | |
6221 | goto QAllEAsOut; | |
6222 | if ((size_t)value_len > buf_size) { | |
6223 | rc = -ERANGE; | |
6224 | goto QAllEAsOut; | |
6225 | } | |
6226 | memcpy(EAData, temp_ptr, value_len); | |
6227 | goto QAllEAsOut; | |
6228 | } | |
f0d3868b | 6229 | } else { |
31c0519f JL |
6230 | /* account for prefix user. and trailing null */ |
6231 | rc += (5 + 1 + name_len); | |
6232 | if (rc < (int) buf_size) { | |
6233 | memcpy(EAData, "user.", 5); | |
6234 | EAData += 5; | |
6235 | memcpy(EAData, temp_ptr, name_len); | |
6236 | EAData += name_len; | |
6237 | /* null terminate name */ | |
6238 | *EAData = 0; | |
6239 | ++EAData; | |
6240 | } else if (buf_size == 0) { | |
6241 | /* skip copy - calc size only */ | |
6242 | } else { | |
6243 | /* stop before overrun buffer */ | |
6244 | rc = -ERANGE; | |
6245 | break; | |
6246 | } | |
1da177e4 | 6247 | } |
0cd126b5 | 6248 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6249 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6250 | } |
f0d3868b | 6251 | |
31c0519f JL |
6252 | /* didn't find the named attribute */ |
6253 | if (ea_name) | |
6254 | rc = -ENODATA; | |
6255 | ||
f0d3868b | 6256 | QAllEAsOut: |
0d817bc0 | 6257 | cifs_buf_release(pSMB); |
1da177e4 LT |
6258 | if (rc == -EAGAIN) |
6259 | goto QAllEAsRetry; | |
6260 | ||
6261 | return (ssize_t)rc; | |
6262 | } | |
6263 | ||
1da177e4 | 6264 | int |
6d5786a3 PS |
6265 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6266 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6267 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6268 | int remap) | |
1da177e4 LT |
6269 | { |
6270 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6271 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6272 | struct fealist *parm_data; | |
6273 | int name_len; | |
6274 | int rc = 0; | |
6275 | int bytes_returned = 0; | |
6276 | __u16 params, param_offset, byte_count, offset, count; | |
6277 | ||
f96637be | 6278 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6279 | SetEARetry: |
6280 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6281 | (void **) &pSMBr); | |
6282 | if (rc) | |
6283 | return rc; | |
6284 | ||
6285 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6286 | name_len = | |
acbbb76a SF |
6287 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6288 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6289 | name_len++; /* trailing null */ |
6290 | name_len *= 2; | |
50c2f753 | 6291 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6292 | name_len = strnlen(fileName, PATH_MAX); |
6293 | name_len++; /* trailing null */ | |
6294 | strncpy(pSMB->FileName, fileName, name_len); | |
6295 | } | |
6296 | ||
6297 | params = 6 + name_len; | |
6298 | ||
6299 | /* done calculating parms using name_len of file name, | |
6300 | now use name_len to calculate length of ea name | |
6301 | we are going to create in the inode xattrs */ | |
790fe579 | 6302 | if (ea_name == NULL) |
1da177e4 LT |
6303 | name_len = 0; |
6304 | else | |
50c2f753 | 6305 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6306 | |
dae5dbdb | 6307 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6308 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6309 | /* BB find max SMB PDU from sess */ |
6310 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6311 | pSMB->MaxSetupCount = 0; |
6312 | pSMB->Reserved = 0; | |
6313 | pSMB->Flags = 0; | |
6314 | pSMB->Timeout = 0; | |
6315 | pSMB->Reserved2 = 0; | |
6316 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6317 | InformationLevel) - 4; |
1da177e4 LT |
6318 | offset = param_offset + params; |
6319 | pSMB->InformationLevel = | |
6320 | cpu_to_le16(SMB_SET_FILE_EA); | |
6321 | ||
6322 | parm_data = | |
6323 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6324 | offset); | |
6325 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6326 | pSMB->DataOffset = cpu_to_le16(offset); | |
6327 | pSMB->SetupCount = 1; | |
6328 | pSMB->Reserved3 = 0; | |
6329 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6330 | byte_count = 3 /* pad */ + params + count; | |
6331 | pSMB->DataCount = cpu_to_le16(count); | |
6332 | parm_data->list_len = cpu_to_le32(count); | |
6333 | parm_data->list[0].EA_flags = 0; | |
6334 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6335 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6336 | /* EA names are always ASCII */ |
790fe579 | 6337 | if (ea_name) |
50c2f753 | 6338 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6339 | parm_data->list[0].name[name_len] = 0; |
6340 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6341 | /* caller ensures that ea_value_len is less than 64K but | |
6342 | we need to ensure that it fits within the smb */ | |
6343 | ||
50c2f753 SF |
6344 | /*BB add length check to see if it would fit in |
6345 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6346 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6347 | if (ea_value_len) | |
50c2f753 SF |
6348 | memcpy(parm_data->list[0].name+name_len+1, |
6349 | ea_value, ea_value_len); | |
1da177e4 LT |
6350 | |
6351 | pSMB->TotalDataCount = pSMB->DataCount; | |
6352 | pSMB->ParameterCount = cpu_to_le16(params); | |
6353 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6354 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6355 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6356 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6357 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6358 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6359 | if (rc) |
f96637be | 6360 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6361 | |
6362 | cifs_buf_release(pSMB); | |
6363 | ||
6364 | if (rc == -EAGAIN) | |
6365 | goto SetEARetry; | |
6366 | ||
6367 | return rc; | |
6368 | } | |
1da177e4 | 6369 | #endif |
0eff0e26 SF |
6370 | |
6371 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6372 | /* | |
6373 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6374 | * to allow network clients (such as Windows) to display updated | |
6375 | * lists of files in directory listings automatically when | |
6376 | * files are added by one user when another user has the | |
6377 | * same directory open on their desktop. The Linux cifs kernel | |
6378 | * client hooked into the kernel side of this interface for | |
6379 | * the same reason, but ironically when the VFS moved from | |
6380 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6381 | * network file system clients (the most obvious use case | |
6382 | * for notify interfaces is when multiple users can update | |
6383 | * the contents of the same directory - exactly what network | |
6384 | * file systems can do) although the server (Samba) could | |
6385 | * still use it. For the short term we leave the worker | |
6386 | * function ifdeffed out (below) until inotify is fixed | |
6387 | * in the VFS to make it easier to plug in network file | |
6388 | * system clients. If inotify turns out to be permanently | |
6389 | * incompatible for network fs clients, we could instead simply | |
6390 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6391 | */ | |
6d5786a3 | 6392 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6393 | const int notify_subdirs, const __u16 netfid, |
6394 | __u32 filter, struct file *pfile, int multishot, | |
6395 | const struct nls_table *nls_codepage) | |
6396 | { | |
6397 | int rc = 0; | |
6398 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6399 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6400 | struct dir_notify_req *dnotify_req; | |
6401 | int bytes_returned; | |
6402 | ||
f96637be | 6403 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6404 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6405 | (void **) &pSMBr); | |
6406 | if (rc) | |
6407 | return rc; | |
6408 | ||
6409 | pSMB->TotalParameterCount = 0 ; | |
6410 | pSMB->TotalDataCount = 0; | |
6411 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6412 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6413 | pSMB->MaxSetupCount = 4; |
6414 | pSMB->Reserved = 0; | |
6415 | pSMB->ParameterOffset = 0; | |
6416 | pSMB->DataCount = 0; | |
6417 | pSMB->DataOffset = 0; | |
6418 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6419 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6420 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6421 | if (notify_subdirs) | |
6422 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6423 | pSMB->Reserved2 = 0; | |
6424 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6425 | pSMB->Fid = netfid; /* file handle always le */ | |
6426 | pSMB->ByteCount = 0; | |
6427 | ||
6428 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6429 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6430 | CIFS_ASYNC_OP); | |
6431 | if (rc) { | |
f96637be | 6432 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6433 | } else { |
6434 | /* Add file to outstanding requests */ | |
6435 | /* BB change to kmem cache alloc */ | |
6436 | dnotify_req = kmalloc( | |
6437 | sizeof(struct dir_notify_req), | |
6438 | GFP_KERNEL); | |
6439 | if (dnotify_req) { | |
6440 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6441 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6442 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6443 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6444 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6445 | dnotify_req->netfid = netfid; | |
6446 | dnotify_req->pfile = pfile; | |
6447 | dnotify_req->filter = filter; | |
6448 | dnotify_req->multishot = multishot; | |
6449 | spin_lock(&GlobalMid_Lock); | |
6450 | list_add_tail(&dnotify_req->lhead, | |
6451 | &GlobalDnotifyReqList); | |
6452 | spin_unlock(&GlobalMid_Lock); | |
6453 | } else | |
6454 | rc = -ENOMEM; | |
6455 | } | |
6456 | cifs_buf_release(pSMB); | |
6457 | return rc; | |
6458 | } | |
6459 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |