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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
aa24d1e9 PS |
89 | /* |
90 | * Mark as invalid, all open files on tree connections since they | |
91 | * were closed when session to server was lost. | |
92 | */ | |
93 | void | |
94 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 | 99 | |
aa24d1e9 | 100 | /* list all files open on tree connection and mark them invalid */ |
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; | |
481 | struct timespec ts, utc; | |
482 | utc = CURRENT_TIME; | |
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", | |
486 | (int)ts.tv_sec, (int)utc.tv_sec, | |
487 | (int)(utc.tv_sec - ts.tv_sec)); | |
488 | val = (int)(utc.tv_sec - ts.tv_sec); | |
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); |
1da177e4 | 676 | if (rc) |
f96637be | 677 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 678 | |
50c2f753 | 679 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 680 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
681 | if (rc == -EAGAIN) |
682 | rc = 0; | |
683 | ||
684 | return rc; | |
685 | } | |
686 | ||
766fdbb5 JL |
687 | /* |
688 | * This is a no-op for now. We're not really interested in the reply, but | |
689 | * rather in the fact that the server sent one and that server->lstrp | |
690 | * gets updated. | |
691 | * | |
692 | * FIXME: maybe we should consider checking that the reply matches request? | |
693 | */ | |
694 | static void | |
695 | cifs_echo_callback(struct mid_q_entry *mid) | |
696 | { | |
697 | struct TCP_Server_Info *server = mid->callback_data; | |
698 | ||
5fb4e288 | 699 | mutex_lock(&server->srv_mutex); |
766fdbb5 | 700 | DeleteMidQEntry(mid); |
5fb4e288 | 701 | mutex_unlock(&server->srv_mutex); |
a891f0f8 | 702 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
703 | } |
704 | ||
705 | int | |
706 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
707 | { | |
708 | ECHO_REQ *smb; | |
709 | int rc = 0; | |
fcc31cb6 | 710 | struct kvec iov; |
fec344e3 JL |
711 | struct smb_rqst rqst = { .rq_iov = &iov, |
712 | .rq_nvec = 1 }; | |
766fdbb5 | 713 | |
f96637be | 714 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
715 | |
716 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
717 | if (rc) | |
718 | return rc; | |
719 | ||
720 | /* set up echo request */ | |
5443d130 | 721 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
722 | smb->hdr.WordCount = 1; |
723 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 724 | put_bcc(1, &smb->hdr); |
766fdbb5 | 725 | smb->Data[0] = 'a'; |
be8e3b00 | 726 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
727 | iov.iov_base = smb; |
728 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 729 | |
fec344e3 | 730 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f8 | 731 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 732 | if (rc) |
f96637be | 733 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
734 | |
735 | cifs_small_buf_release(smb); | |
736 | ||
737 | return rc; | |
738 | } | |
739 | ||
1da177e4 | 740 | int |
58c45c58 | 741 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 742 | { |
1da177e4 LT |
743 | LOGOFF_ANDX_REQ *pSMB; |
744 | int rc = 0; | |
1da177e4 | 745 | |
f96637be | 746 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 747 | |
14fbf50d JL |
748 | /* |
749 | * BB: do we need to check validity of ses and server? They should | |
750 | * always be valid since we have an active reference. If not, that | |
751 | * should probably be a BUG() | |
752 | */ | |
753 | if (!ses || !ses->server) | |
3b795210 SF |
754 | return -EIO; |
755 | ||
d7b619cf | 756 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
757 | if (ses->need_reconnect) |
758 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
759 | already closed due to reconnect */ | |
1da177e4 LT |
760 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
761 | if (rc) { | |
d7b619cf | 762 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
763 | return rc; |
764 | } | |
765 | ||
88257360 | 766 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 767 | |
38d77c50 JL |
768 | if (ses->server->sign) |
769 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
770 | |
771 | pSMB->hdr.Uid = ses->Suid; | |
772 | ||
773 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 774 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 775 | session_already_dead: |
d7b619cf | 776 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
777 | |
778 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 779 | since server closed smb session, no sense reporting |
1da177e4 LT |
780 | error */ |
781 | if (rc == -EAGAIN) | |
782 | rc = 0; | |
783 | return rc; | |
784 | } | |
785 | ||
2d785a50 | 786 | int |
6d5786a3 PS |
787 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
788 | const char *fileName, __u16 type, | |
789 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
790 | { |
791 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
792 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
793 | struct unlink_psx_rq *pRqD; | |
794 | int name_len; | |
795 | int rc = 0; | |
796 | int bytes_returned = 0; | |
797 | __u16 params, param_offset, offset, byte_count; | |
798 | ||
f96637be | 799 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
800 | PsxDelete: |
801 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
802 | (void **) &pSMBr); | |
803 | if (rc) | |
804 | return rc; | |
805 | ||
806 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
807 | name_len = | |
acbbb76a SF |
808 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
809 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
810 | name_len++; /* trailing null */ |
811 | name_len *= 2; | |
812 | } else { /* BB add path length overrun check */ | |
813 | name_len = strnlen(fileName, PATH_MAX); | |
814 | name_len++; /* trailing null */ | |
815 | strncpy(pSMB->FileName, fileName, name_len); | |
816 | } | |
817 | ||
818 | params = 6 + name_len; | |
819 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
820 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
821 | pSMB->MaxSetupCount = 0; | |
822 | pSMB->Reserved = 0; | |
823 | pSMB->Flags = 0; | |
824 | pSMB->Timeout = 0; | |
825 | pSMB->Reserved2 = 0; | |
826 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
827 | InformationLevel) - 4; | |
828 | offset = param_offset + params; | |
829 | ||
830 | /* Setup pointer to Request Data (inode type) */ | |
831 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
832 | pRqD->type = cpu_to_le16(type); | |
833 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
834 | pSMB->DataOffset = cpu_to_le16(offset); | |
835 | pSMB->SetupCount = 1; | |
836 | pSMB->Reserved3 = 0; | |
837 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
838 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
839 | ||
840 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
841 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
842 | pSMB->ParameterCount = cpu_to_le16(params); | |
843 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
844 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
845 | pSMB->Reserved4 = 0; | |
be8e3b00 | 846 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
847 | pSMB->ByteCount = cpu_to_le16(byte_count); |
848 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
849 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 850 | if (rc) |
f96637be | 851 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
852 | cifs_buf_release(pSMB); |
853 | ||
44c58186 | 854 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
855 | |
856 | if (rc == -EAGAIN) | |
857 | goto PsxDelete; | |
858 | ||
859 | return rc; | |
860 | } | |
861 | ||
1da177e4 | 862 | int |
ed6875e0 PS |
863 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
864 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
865 | { |
866 | DELETE_FILE_REQ *pSMB = NULL; | |
867 | DELETE_FILE_RSP *pSMBr = NULL; | |
868 | int rc = 0; | |
869 | int bytes_returned; | |
870 | int name_len; | |
2baa2682 | 871 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
872 | |
873 | DelFileRetry: | |
874 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
875 | (void **) &pSMBr); | |
876 | if (rc) | |
877 | return rc; | |
878 | ||
879 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
880 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
881 | PATH_MAX, cifs_sb->local_nls, | |
882 | remap); | |
1da177e4 LT |
883 | name_len++; /* trailing null */ |
884 | name_len *= 2; | |
09d1db5c | 885 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 886 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 887 | name_len++; /* trailing null */ |
ed6875e0 | 888 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
889 | } |
890 | pSMB->SearchAttributes = | |
891 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
892 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 893 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
894 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
895 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
896 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 897 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 898 | if (rc) |
f96637be | 899 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
900 | |
901 | cifs_buf_release(pSMB); | |
902 | if (rc == -EAGAIN) | |
903 | goto DelFileRetry; | |
904 | ||
905 | return rc; | |
906 | } | |
907 | ||
908 | int | |
f958ca5d PS |
909 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
910 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
911 | { |
912 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
913 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
914 | int rc = 0; | |
915 | int bytes_returned; | |
916 | int name_len; | |
2baa2682 | 917 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 918 | |
f96637be | 919 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
920 | RmDirRetry: |
921 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
922 | (void **) &pSMBr); | |
923 | if (rc) | |
924 | return rc; | |
925 | ||
926 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
927 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
928 | PATH_MAX, cifs_sb->local_nls, | |
929 | remap); | |
1da177e4 LT |
930 | name_len++; /* trailing null */ |
931 | name_len *= 2; | |
09d1db5c | 932 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 933 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 934 | name_len++; /* trailing null */ |
f958ca5d | 935 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
936 | } |
937 | ||
938 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 939 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
940 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
941 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
942 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 943 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 944 | if (rc) |
f96637be | 945 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
946 | |
947 | cifs_buf_release(pSMB); | |
948 | if (rc == -EAGAIN) | |
949 | goto RmDirRetry; | |
950 | return rc; | |
951 | } | |
952 | ||
953 | int | |
f436720e PS |
954 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
955 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
956 | { |
957 | int rc = 0; | |
958 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
959 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
960 | int bytes_returned; | |
961 | int name_len; | |
2baa2682 | 962 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 963 | |
f96637be | 964 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
965 | MkDirRetry: |
966 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
967 | (void **) &pSMBr); | |
968 | if (rc) | |
969 | return rc; | |
970 | ||
971 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 972 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
973 | PATH_MAX, cifs_sb->local_nls, |
974 | remap); | |
1da177e4 LT |
975 | name_len++; /* trailing null */ |
976 | name_len *= 2; | |
09d1db5c | 977 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
978 | name_len = strnlen(name, PATH_MAX); |
979 | name_len++; /* trailing null */ | |
980 | strncpy(pSMB->DirName, name, name_len); | |
981 | } | |
982 | ||
983 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 984 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
985 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
986 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
987 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 988 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 989 | if (rc) |
f96637be | 990 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 991 | |
1da177e4 LT |
992 | cifs_buf_release(pSMB); |
993 | if (rc == -EAGAIN) | |
994 | goto MkDirRetry; | |
995 | return rc; | |
996 | } | |
997 | ||
2dd29d31 | 998 | int |
6d5786a3 PS |
999 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1000 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1001 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1002 | const char *name, const struct nls_table *nls_codepage, | |
1003 | int remap) | |
2dd29d31 SF |
1004 | { |
1005 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1006 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1007 | int name_len; | |
1008 | int rc = 0; | |
1009 | int bytes_returned = 0; | |
2dd29d31 | 1010 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1011 | OPEN_PSX_REQ *pdata; |
1012 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1013 | |
f96637be | 1014 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1015 | PsxCreat: |
1016 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1017 | (void **) &pSMBr); | |
1018 | if (rc) | |
1019 | return rc; | |
1020 | ||
1021 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1022 | name_len = | |
acbbb76a SF |
1023 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1024 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1025 | name_len++; /* trailing null */ |
1026 | name_len *= 2; | |
1027 | } else { /* BB improve the check for buffer overruns BB */ | |
1028 | name_len = strnlen(name, PATH_MAX); | |
1029 | name_len++; /* trailing null */ | |
1030 | strncpy(pSMB->FileName, name, name_len); | |
1031 | } | |
1032 | ||
1033 | params = 6 + name_len; | |
1034 | count = sizeof(OPEN_PSX_REQ); | |
1035 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1036 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1037 | pSMB->MaxSetupCount = 0; | |
1038 | pSMB->Reserved = 0; | |
1039 | pSMB->Flags = 0; | |
1040 | pSMB->Timeout = 0; | |
1041 | pSMB->Reserved2 = 0; | |
1042 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1043 | InformationLevel) - 4; |
2dd29d31 | 1044 | offset = param_offset + params; |
2dd29d31 | 1045 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1046 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1047 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1048 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1049 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1050 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1051 | pSMB->DataOffset = cpu_to_le16(offset); | |
1052 | pSMB->SetupCount = 1; | |
1053 | pSMB->Reserved3 = 0; | |
1054 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1055 | byte_count = 3 /* pad */ + params + count; | |
1056 | ||
1057 | pSMB->DataCount = cpu_to_le16(count); | |
1058 | pSMB->ParameterCount = cpu_to_le16(params); | |
1059 | pSMB->TotalDataCount = pSMB->DataCount; | |
1060 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1061 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1062 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1063 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1064 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1065 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1066 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1067 | if (rc) { | |
f96637be | 1068 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1069 | goto psx_create_err; |
1070 | } | |
1071 | ||
f96637be | 1072 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1073 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1074 | ||
820a803f | 1075 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1076 | rc = -EIO; /* bad smb */ |
1077 | goto psx_create_err; | |
1078 | } | |
1079 | ||
1080 | /* copy return information to pRetData */ | |
50c2f753 | 1081 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1082 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1083 | |
2dd29d31 | 1084 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1085 | if (netfid) |
2dd29d31 SF |
1086 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1087 | /* Let caller know file was created so we can set the mode. */ | |
1088 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1089 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1090 | *pOplock |= CIFS_CREATE_ACTION; |
1091 | /* check to make sure response data is there */ | |
8f2376ad CG |
1092 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1093 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1094 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1095 | } else { |
820a803f | 1096 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1097 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1098 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1099 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1100 | goto psx_create_err; |
1101 | } | |
50c2f753 | 1102 | memcpy((char *) pRetData, |
cbac3cba | 1103 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1104 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1105 | } |
2dd29d31 SF |
1106 | |
1107 | psx_create_err: | |
1108 | cifs_buf_release(pSMB); | |
1109 | ||
65bc98b0 | 1110 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1111 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1112 | else |
44c58186 | 1113 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1114 | |
1115 | if (rc == -EAGAIN) | |
1116 | goto PsxCreat; | |
1117 | ||
50c2f753 | 1118 | return rc; |
2dd29d31 SF |
1119 | } |
1120 | ||
a9d02ad4 SF |
1121 | static __u16 convert_disposition(int disposition) |
1122 | { | |
1123 | __u16 ofun = 0; | |
1124 | ||
1125 | switch (disposition) { | |
1126 | case FILE_SUPERSEDE: | |
1127 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1128 | break; | |
1129 | case FILE_OPEN: | |
1130 | ofun = SMBOPEN_OAPPEND; | |
1131 | break; | |
1132 | case FILE_CREATE: | |
1133 | ofun = SMBOPEN_OCREATE; | |
1134 | break; | |
1135 | case FILE_OPEN_IF: | |
1136 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1137 | break; | |
1138 | case FILE_OVERWRITE: | |
1139 | ofun = SMBOPEN_OTRUNC; | |
1140 | break; | |
1141 | case FILE_OVERWRITE_IF: | |
1142 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1143 | break; | |
1144 | default: | |
f96637be | 1145 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1146 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1147 | } | |
1148 | return ofun; | |
1149 | } | |
1150 | ||
35fc37d5 JL |
1151 | static int |
1152 | access_flags_to_smbopen_mode(const int access_flags) | |
1153 | { | |
1154 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1155 | ||
1156 | if (masked_flags == GENERIC_READ) | |
1157 | return SMBOPEN_READ; | |
1158 | else if (masked_flags == GENERIC_WRITE) | |
1159 | return SMBOPEN_WRITE; | |
1160 | ||
1161 | /* just go for read/write */ | |
1162 | return SMBOPEN_READWRITE; | |
1163 | } | |
1164 | ||
a9d02ad4 | 1165 | int |
6d5786a3 | 1166 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1167 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1168 | const int access_flags, const int create_options, __u16 *netfid, |
1169 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1170 | const struct nls_table *nls_codepage, int remap) |
1171 | { | |
1172 | int rc = -EACCES; | |
1173 | OPENX_REQ *pSMB = NULL; | |
1174 | OPENX_RSP *pSMBr = NULL; | |
1175 | int bytes_returned; | |
1176 | int name_len; | |
1177 | __u16 count; | |
1178 | ||
1179 | OldOpenRetry: | |
1180 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1181 | (void **) &pSMBr); | |
1182 | if (rc) | |
1183 | return rc; | |
1184 | ||
1185 | pSMB->AndXCommand = 0xFF; /* none */ | |
1186 | ||
1187 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1188 | count = 1; /* account for one byte pad to word boundary */ | |
1189 | name_len = | |
acbbb76a SF |
1190 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1191 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1192 | name_len++; /* trailing null */ |
1193 | name_len *= 2; | |
1194 | } else { /* BB improve check for buffer overruns BB */ | |
1195 | count = 0; /* no pad */ | |
1196 | name_len = strnlen(fileName, PATH_MAX); | |
1197 | name_len++; /* trailing null */ | |
1198 | strncpy(pSMB->fileName, fileName, name_len); | |
1199 | } | |
1200 | if (*pOplock & REQ_OPLOCK) | |
1201 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1202 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1203 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1204 | |
a9d02ad4 | 1205 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1206 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1207 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1208 | /* set file as system file if special file such | |
1209 | as fifo and server expecting SFU style and | |
1210 | no Unix extensions */ | |
1211 | ||
790fe579 SF |
1212 | if (create_options & CREATE_OPTION_SPECIAL) |
1213 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1214 | else /* BB FIXME BB */ |
1215 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1216 | |
67750fb9 JL |
1217 | if (create_options & CREATE_OPTION_READONLY) |
1218 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1219 | |
1220 | /* BB FIXME BB */ | |
50c2f753 SF |
1221 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1222 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1223 | /* BB FIXME END BB */ |
3e87d803 SF |
1224 | |
1225 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1226 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1227 | count += name_len; |
be8e3b00 | 1228 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1229 | |
1230 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1231 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1232 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1233 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1234 | if (rc) { |
f96637be | 1235 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1236 | } else { |
1237 | /* BB verify if wct == 15 */ | |
1238 | ||
582d21e5 | 1239 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1240 | |
1241 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1242 | /* Let caller know file was created so we can set the mode. */ | |
1243 | /* Do we care about the CreateAction in any other cases? */ | |
1244 | /* BB FIXME BB */ | |
790fe579 | 1245 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1246 | *pOplock |= CIFS_CREATE_ACTION; */ |
1247 | /* BB FIXME END */ | |
1248 | ||
790fe579 | 1249 | if (pfile_info) { |
a9d02ad4 SF |
1250 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1251 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1252 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1253 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1254 | pfile_info->Attributes = |
50c2f753 | 1255 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1256 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1257 | pfile_info->AllocationSize = |
1258 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1259 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1260 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1261 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1262 | } |
1263 | } | |
1264 | ||
1265 | cifs_buf_release(pSMB); | |
1266 | if (rc == -EAGAIN) | |
1267 | goto OldOpenRetry; | |
1268 | return rc; | |
1269 | } | |
1270 | ||
1da177e4 | 1271 | int |
d81b8a40 PS |
1272 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1273 | FILE_ALL_INFO *buf) | |
1da177e4 LT |
1274 | { |
1275 | int rc = -EACCES; | |
9bf4fa01 PS |
1276 | OPEN_REQ *req = NULL; |
1277 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1278 | int bytes_returned; |
1279 | int name_len; | |
1280 | __u16 count; | |
d81b8a40 PS |
1281 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1282 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1283 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1284 | const struct nls_table *nls = cifs_sb->local_nls; |
1285 | int create_options = oparms->create_options; | |
1286 | int desired_access = oparms->desired_access; | |
1287 | int disposition = oparms->disposition; | |
1288 | const char *path = oparms->path; | |
1da177e4 LT |
1289 | |
1290 | openRetry: | |
9bf4fa01 PS |
1291 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1292 | (void **)&rsp); | |
1da177e4 LT |
1293 | if (rc) |
1294 | return rc; | |
1295 | ||
9bf4fa01 PS |
1296 | /* no commands go after this */ |
1297 | req->AndXCommand = 0xFF; | |
1da177e4 | 1298 | |
9bf4fa01 PS |
1299 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1300 | /* account for one byte pad to word boundary */ | |
1301 | count = 1; | |
1302 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1303 | path, PATH_MAX, nls, remap); | |
1304 | /* trailing null */ | |
1305 | name_len++; | |
1da177e4 | 1306 | name_len *= 2; |
9bf4fa01 PS |
1307 | req->NameLength = cpu_to_le16(name_len); |
1308 | } else { | |
1309 | /* BB improve check for buffer overruns BB */ | |
1310 | /* no pad */ | |
1311 | count = 0; | |
1312 | name_len = strnlen(path, PATH_MAX); | |
1313 | /* trailing null */ | |
1314 | name_len++; | |
1315 | req->NameLength = cpu_to_le16(name_len); | |
1316 | strncpy(req->fileName, path, name_len); | |
1da177e4 | 1317 | } |
9bf4fa01 PS |
1318 | |
1319 | if (*oplock & REQ_OPLOCK) | |
1320 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1321 | else if (*oplock & REQ_BATCHOPLOCK) | |
1322 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1323 | ||
1324 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1325 | req->AllocationSize = 0; | |
1326 | ||
1327 | /* | |
1328 | * Set file as system file if special file such as fifo and server | |
1329 | * expecting SFU style and no Unix extensions. | |
1330 | */ | |
790fe579 | 1331 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1332 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1333 | else |
9bf4fa01 | 1334 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1335 | |
9bf4fa01 PS |
1336 | /* |
1337 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1338 | * sensitive checks for other servers such as Samba. | |
1339 | */ | |
1da177e4 | 1340 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1341 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1342 | |
67750fb9 | 1343 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1344 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1345 | ||
1346 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1347 | req->CreateDisposition = cpu_to_le32(disposition); | |
1348 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1349 | |
09d1db5c | 1350 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1351 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1352 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1353 | |
1354 | count += name_len; | |
9bf4fa01 | 1355 | inc_rfc1001_len(req, count); |
1da177e4 | 1356 | |
9bf4fa01 PS |
1357 | req->ByteCount = cpu_to_le16(count); |
1358 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1359 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1360 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1361 | if (rc) { |
f96637be | 1362 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1363 | cifs_buf_release(req); |
1364 | if (rc == -EAGAIN) | |
1365 | goto openRetry; | |
1366 | return rc; | |
1da177e4 | 1367 | } |
a5a2b489 | 1368 | |
9bf4fa01 PS |
1369 | /* 1 byte no need to le_to_cpu */ |
1370 | *oplock = rsp->OplockLevel; | |
1371 | /* cifs fid stays in le */ | |
d81b8a40 | 1372 | oparms->fid->netfid = rsp->Fid; |
9bf4fa01 PS |
1373 | |
1374 | /* Let caller know file was created so we can set the mode. */ | |
1375 | /* Do we care about the CreateAction in any other cases? */ | |
1376 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1377 | *oplock |= CIFS_CREATE_ACTION; | |
1378 | ||
1379 | if (buf) { | |
1380 | /* copy from CreationTime to Attributes */ | |
1381 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1382 | /* the file_info buf is endian converted by caller */ | |
1383 | buf->AllocationSize = rsp->AllocationSize; | |
1384 | buf->EndOfFile = rsp->EndOfFile; | |
1385 | buf->NumberOfLinks = cpu_to_le32(1); | |
1386 | buf->DeletePending = 0; | |
1387 | } | |
1388 | ||
1389 | cifs_buf_release(req); | |
1da177e4 LT |
1390 | return rc; |
1391 | } | |
1392 | ||
e28bc5b1 JL |
1393 | /* |
1394 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1395 | * current bigbuf. | |
1396 | */ | |
1397 | static int | |
6cc3b242 | 1398 | discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1399 | { |
5ffef7bf | 1400 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 | 1401 | int remaining = rfclen + 4 - server->total_read; |
e28bc5b1 JL |
1402 | |
1403 | while (remaining > 0) { | |
1404 | int length; | |
1405 | ||
1406 | length = cifs_read_from_socket(server, server->bigbuf, | |
1407 | min_t(unsigned int, remaining, | |
1887f601 | 1408 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1409 | if (length < 0) |
1410 | return length; | |
1411 | server->total_read += length; | |
1412 | remaining -= length; | |
1413 | } | |
1414 | ||
e28bc5b1 JL |
1415 | return 0; |
1416 | } | |
1417 | ||
6cc3b242 PS |
1418 | static int |
1419 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1420 | { | |
1421 | int length; | |
1422 | struct cifs_readdata *rdata = mid->callback_data; | |
1423 | ||
1424 | length = discard_remaining_data(server); | |
1425 | dequeue_mid(mid, rdata->result); | |
1426 | return length; | |
1427 | } | |
1428 | ||
09a4707e | 1429 | int |
e28bc5b1 JL |
1430 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1431 | { | |
1432 | int length, len; | |
8d5ce4d2 | 1433 | unsigned int data_offset, data_len; |
e28bc5b1 | 1434 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1435 | char *buf = server->smallbuf; |
1436 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1437 | |
f96637be JP |
1438 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1439 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1440 | |
1441 | /* | |
1442 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1443 | * can if there's not enough data. At this point, we've read down to | |
1444 | * the Mid. | |
1445 | */ | |
eb378711 | 1446 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1447 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1448 | |
a6137305 AV |
1449 | length = cifs_read_from_socket(server, |
1450 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1451 | if (length < 0) |
1452 | return length; | |
1453 | server->total_read += length; | |
1454 | ||
6cc3b242 PS |
1455 | if (server->ops->is_status_pending && |
1456 | server->ops->is_status_pending(buf, server, 0)) { | |
1457 | discard_remaining_data(server); | |
1458 | return -1; | |
1459 | } | |
1460 | ||
e28bc5b1 | 1461 | /* Was the SMB read successful? */ |
eb378711 | 1462 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1463 | if (rdata->result != 0) { |
f96637be JP |
1464 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1465 | __func__, rdata->result); | |
e28bc5b1 JL |
1466 | return cifs_readv_discard(server, mid); |
1467 | } | |
1468 | ||
1469 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1470 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1471 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1472 | __func__, server->total_read, | |
1473 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1474 | rdata->result = -EIO; |
1475 | return cifs_readv_discard(server, mid); | |
1476 | } | |
1477 | ||
eb378711 | 1478 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1479 | if (data_offset < server->total_read) { |
1480 | /* | |
1481 | * win2k8 sometimes sends an offset of 0 when the read | |
1482 | * is beyond the EOF. Treat it as if the data starts just after | |
1483 | * the header. | |
1484 | */ | |
f96637be JP |
1485 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1486 | __func__, data_offset); | |
e28bc5b1 JL |
1487 | data_offset = server->total_read; |
1488 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1489 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1490 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1491 | __func__, data_offset); | |
e28bc5b1 JL |
1492 | rdata->result = -EIO; |
1493 | return cifs_readv_discard(server, mid); | |
1494 | } | |
1495 | ||
f96637be JP |
1496 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1497 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1498 | |
1499 | len = data_offset - server->total_read; | |
1500 | if (len > 0) { | |
1501 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1502 | length = cifs_read_from_socket(server, |
1503 | buf + server->total_read, len); | |
e28bc5b1 JL |
1504 | if (length < 0) |
1505 | return length; | |
1506 | server->total_read += length; | |
1507 | } | |
1508 | ||
1509 | /* set up first iov for signature check */ | |
5819575e JL |
1510 | rdata->iov.iov_base = buf; |
1511 | rdata->iov.iov_len = server->total_read; | |
f96637be JP |
1512 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1513 | rdata->iov.iov_base, rdata->iov.iov_len); | |
e28bc5b1 JL |
1514 | |
1515 | /* how much data is in the response? */ | |
eb378711 | 1516 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1517 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1518 | /* data_len is corrupt -- discard frame */ |
1519 | rdata->result = -EIO; | |
1520 | return cifs_readv_discard(server, mid); | |
1521 | } | |
1522 | ||
8321fec4 JL |
1523 | length = rdata->read_into_pages(server, rdata, data_len); |
1524 | if (length < 0) | |
1525 | return length; | |
e28bc5b1 | 1526 | |
8321fec4 | 1527 | server->total_read += length; |
e28bc5b1 | 1528 | |
f96637be JP |
1529 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1530 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1531 | |
1532 | /* discard anything left over */ | |
5ffef7bf | 1533 | if (server->total_read < buflen) |
e28bc5b1 JL |
1534 | return cifs_readv_discard(server, mid); |
1535 | ||
1536 | dequeue_mid(mid, false); | |
1537 | return length; | |
1538 | } | |
1539 | ||
e28bc5b1 JL |
1540 | static void |
1541 | cifs_readv_callback(struct mid_q_entry *mid) | |
1542 | { | |
1543 | struct cifs_readdata *rdata = mid->callback_data; | |
1544 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1545 | struct TCP_Server_Info *server = tcon->ses->server; | |
5819575e JL |
1546 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
1547 | .rq_nvec = 1, | |
8321fec4 JL |
1548 | .rq_pages = rdata->pages, |
1549 | .rq_npages = rdata->nr_pages, | |
1550 | .rq_pagesz = rdata->pagesz, | |
1551 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1552 | |
f96637be JP |
1553 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1554 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1555 | rdata->bytes); | |
e28bc5b1 | 1556 | |
7c9421e1 | 1557 | switch (mid->mid_state) { |
e28bc5b1 JL |
1558 | case MID_RESPONSE_RECEIVED: |
1559 | /* result already set, check signature */ | |
38d77c50 | 1560 | if (server->sign) { |
985e4ff0 SF |
1561 | int rc = 0; |
1562 | ||
bf5ea0e2 | 1563 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1564 | mid->sequence_number); |
985e4ff0 | 1565 | if (rc) |
f96637be JP |
1566 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1567 | rc); | |
e28bc5b1 JL |
1568 | } |
1569 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1570 | task_io_account_read(rdata->got_bytes); |
1571 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1572 | break; |
1573 | case MID_REQUEST_SUBMITTED: | |
1574 | case MID_RETRY_NEEDED: | |
1575 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1576 | if (server->sign && rdata->got_bytes) |
1577 | /* reset bytes number since we can not check a sign */ | |
1578 | rdata->got_bytes = 0; | |
1579 | /* FIXME: should this be counted toward the initiating task? */ | |
1580 | task_io_account_read(rdata->got_bytes); | |
1581 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1582 | break; |
1583 | default: | |
1584 | rdata->result = -EIO; | |
1585 | } | |
1586 | ||
da472fc8 | 1587 | queue_work(cifsiod_wq, &rdata->work); |
5fb4e288 | 1588 | mutex_lock(&server->srv_mutex); |
e28bc5b1 | 1589 | DeleteMidQEntry(mid); |
5fb4e288 | 1590 | mutex_unlock(&server->srv_mutex); |
a891f0f8 | 1591 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1592 | } |
1593 | ||
1594 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1595 | int | |
1596 | cifs_async_readv(struct cifs_readdata *rdata) | |
1597 | { | |
1598 | int rc; | |
1599 | READ_REQ *smb = NULL; | |
1600 | int wct; | |
1601 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
5819575e | 1602 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3 | 1603 | .rq_nvec = 1 }; |
e28bc5b1 | 1604 | |
f96637be JP |
1605 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1606 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1607 | |
1608 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1609 | wct = 12; | |
1610 | else { | |
1611 | wct = 10; /* old style read */ | |
1612 | if ((rdata->offset >> 32) > 0) { | |
1613 | /* can not handle this big offset for old */ | |
1614 | return -EIO; | |
1615 | } | |
1616 | } | |
1617 | ||
1618 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1619 | if (rc) | |
1620 | return rc; | |
1621 | ||
1622 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1623 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1624 | ||
1625 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1626 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1627 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1628 | if (wct == 12) | |
1629 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1630 | smb->Remaining = 0; | |
1631 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1632 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1633 | if (wct == 12) | |
1634 | smb->ByteCount = 0; | |
1635 | else { | |
1636 | /* old style read */ | |
1637 | struct smb_com_readx_req *smbr = | |
1638 | (struct smb_com_readx_req *)smb; | |
1639 | smbr->ByteCount = 0; | |
1640 | } | |
1641 | ||
1642 | /* 4 for RFC1001 length + 1 for BCC */ | |
5819575e JL |
1643 | rdata->iov.iov_base = smb; |
1644 | rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
e28bc5b1 | 1645 | |
6993f74a | 1646 | kref_get(&rdata->refcount); |
fec344e3 JL |
1647 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
1648 | cifs_readv_callback, rdata, 0); | |
e28bc5b1 JL |
1649 | |
1650 | if (rc == 0) | |
44c58186 | 1651 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1652 | else |
1653 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1654 | |
1655 | cifs_small_buf_release(smb); | |
1656 | return rc; | |
1657 | } | |
1658 | ||
1da177e4 | 1659 | int |
6d5786a3 PS |
1660 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1661 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1662 | { |
1663 | int rc = -EACCES; | |
1664 | READ_REQ *pSMB = NULL; | |
1665 | READ_RSP *pSMBr = NULL; | |
1666 | char *pReadData = NULL; | |
bfa0d75a | 1667 | int wct; |
ec637e3f SF |
1668 | int resp_buf_type = 0; |
1669 | struct kvec iov[1]; | |
d4ffff1f PS |
1670 | __u32 pid = io_parms->pid; |
1671 | __u16 netfid = io_parms->netfid; | |
1672 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1673 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1674 | unsigned int count = io_parms->length; |
1da177e4 | 1675 | |
f96637be | 1676 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1677 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1678 | wct = 12; |
4c3130ef | 1679 | else { |
bfa0d75a | 1680 | wct = 10; /* old style read */ |
d4ffff1f | 1681 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1682 | /* can not handle this big offset for old */ |
1683 | return -EIO; | |
1684 | } | |
1685 | } | |
1da177e4 LT |
1686 | |
1687 | *nbytes = 0; | |
ec637e3f | 1688 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1689 | if (rc) |
1690 | return rc; | |
1691 | ||
d4ffff1f PS |
1692 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1693 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1694 | ||
1da177e4 LT |
1695 | /* tcon and ses pointer are checked in smb_init */ |
1696 | if (tcon->ses->server == NULL) | |
1697 | return -ECONNABORTED; | |
1698 | ||
ec637e3f | 1699 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1700 | pSMB->Fid = netfid; |
d4ffff1f | 1701 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1702 | if (wct == 12) |
d4ffff1f | 1703 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1704 | |
1da177e4 LT |
1705 | pSMB->Remaining = 0; |
1706 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1707 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1708 | if (wct == 12) |
bfa0d75a SF |
1709 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1710 | else { | |
1711 | /* old style read */ | |
50c2f753 | 1712 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1713 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1714 | pSMBW->ByteCount = 0; |
bfa0d75a | 1715 | } |
ec637e3f SF |
1716 | |
1717 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1718 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1719 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1720 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1721 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1722 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1723 | if (rc) { |
f96637be | 1724 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1725 | } else { |
1726 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1727 | data_length = data_length << 16; | |
1728 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1729 | *nbytes = data_length; | |
1730 | ||
1731 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1732 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1733 | || (data_length > count)) { |
f96637be | 1734 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1735 | data_length, count); |
1da177e4 LT |
1736 | rc = -EIO; |
1737 | *nbytes = 0; | |
1738 | } else { | |
ec637e3f | 1739 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1740 | le16_to_cpu(pSMBr->DataOffset); |
1741 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1742 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1743 | rc = -EFAULT; |
26f57364 | 1744 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1745 | if (*buf) |
50c2f753 | 1746 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1747 | } |
1748 | } | |
1da177e4 | 1749 | |
4b8f930f | 1750 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1751 | if (*buf) { |
6d81ed1e | 1752 | free_rsp_buf(resp_buf_type, iov[0].iov_base); |
790fe579 | 1753 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1754 | /* return buffer to caller to free */ |
1755 | *buf = iov[0].iov_base; | |
790fe579 | 1756 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1757 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1758 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1759 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1760 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1761 | |
1762 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1763 | since file handle passed in no longer valid */ |
1764 | return rc; | |
1765 | } | |
1766 | ||
ec637e3f | 1767 | |
1da177e4 | 1768 | int |
6d5786a3 | 1769 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1770 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1771 | { |
1772 | int rc = -EACCES; | |
1773 | WRITE_REQ *pSMB = NULL; | |
1774 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1775 | int bytes_returned, wct; |
1da177e4 LT |
1776 | __u32 bytes_sent; |
1777 | __u16 byte_count; | |
fa2989f4 PS |
1778 | __u32 pid = io_parms->pid; |
1779 | __u16 netfid = io_parms->netfid; | |
1780 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1781 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1782 | unsigned int count = io_parms->length; |
1da177e4 | 1783 | |
a24e2d7d SF |
1784 | *nbytes = 0; |
1785 | ||
f96637be | 1786 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1787 | if (tcon->ses == NULL) |
1c955187 SF |
1788 | return -ECONNABORTED; |
1789 | ||
790fe579 | 1790 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1791 | wct = 14; |
4c3130ef | 1792 | else { |
1c955187 | 1793 | wct = 12; |
4c3130ef SF |
1794 | if ((offset >> 32) > 0) { |
1795 | /* can not handle big offset for old srv */ | |
1796 | return -EIO; | |
1797 | } | |
1798 | } | |
1c955187 SF |
1799 | |
1800 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1801 | (void **) &pSMBr); |
1802 | if (rc) | |
1803 | return rc; | |
fa2989f4 PS |
1804 | |
1805 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1806 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1807 | ||
1da177e4 LT |
1808 | /* tcon and ses pointer are checked in smb_init */ |
1809 | if (tcon->ses->server == NULL) | |
1810 | return -ECONNABORTED; | |
1811 | ||
1812 | pSMB->AndXCommand = 0xFF; /* none */ | |
1813 | pSMB->Fid = netfid; | |
1814 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1815 | if (wct == 14) |
1c955187 | 1816 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1817 | |
1da177e4 LT |
1818 | pSMB->Reserved = 0xFFFFFFFF; |
1819 | pSMB->WriteMode = 0; | |
1820 | pSMB->Remaining = 0; | |
1821 | ||
50c2f753 | 1822 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1823 | can send more if LARGE_WRITE_X capability returned by the server and if |
1824 | our buffer is big enough or if we convert to iovecs on socket writes | |
1825 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1826 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1827 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1828 | } else { | |
1829 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1830 | & ~0xFF; | |
1831 | } | |
1832 | ||
1833 | if (bytes_sent > count) | |
1834 | bytes_sent = count; | |
1835 | pSMB->DataOffset = | |
50c2f753 | 1836 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1837 | if (buf) |
61e74801 | 1838 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1839 | else if (count != 0) { |
1da177e4 LT |
1840 | /* No buffer */ |
1841 | cifs_buf_release(pSMB); | |
1842 | return -EINVAL; | |
e30dcf3a | 1843 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1844 | if (wct == 14) |
e30dcf3a | 1845 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1846 | else /* wct == 12 */ |
e30dcf3a | 1847 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1848 | |
1da177e4 LT |
1849 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1850 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1851 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1852 | |
790fe579 | 1853 | if (wct == 14) |
1c955187 | 1854 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1855 | else { /* old style write has byte count 4 bytes earlier |
1856 | so 4 bytes pad */ | |
1857 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1858 | (struct smb_com_writex_req *)pSMB; |
1859 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1860 | } | |
1da177e4 LT |
1861 | |
1862 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1863 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1864 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1865 | if (rc) { |
f96637be | 1866 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1867 | } else { |
1868 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1869 | *nbytes = (*nbytes) << 16; | |
1870 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1871 | |
1872 | /* | |
1873 | * Mask off high 16 bits when bytes written as returned by the | |
1874 | * server is greater than bytes requested by the client. Some | |
1875 | * OS/2 servers are known to set incorrect CountHigh values. | |
1876 | */ | |
1877 | if (*nbytes > count) | |
1878 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1879 | } |
1880 | ||
1881 | cifs_buf_release(pSMB); | |
1882 | ||
50c2f753 | 1883 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1884 | since file handle passed in no longer valid */ |
1885 | ||
1886 | return rc; | |
1887 | } | |
1888 | ||
c28c89fc JL |
1889 | void |
1890 | cifs_writedata_release(struct kref *refcount) | |
1891 | { | |
1892 | struct cifs_writedata *wdata = container_of(refcount, | |
1893 | struct cifs_writedata, refcount); | |
1894 | ||
1895 | if (wdata->cfile) | |
1896 | cifsFileInfo_put(wdata->cfile); | |
1897 | ||
1898 | kfree(wdata); | |
1899 | } | |
1900 | ||
1901 | /* | |
1902 | * Write failed with a retryable error. Resend the write request. It's also | |
1903 | * possible that the page was redirtied so re-clean the page. | |
1904 | */ | |
1905 | static void | |
1906 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1907 | { | |
7f6c5008 | 1908 | int i, rc = 0; |
2b0143b5 | 1909 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 1910 | struct TCP_Server_Info *server; |
7f6c5008 | 1911 | unsigned int rest_len; |
c28c89fc | 1912 | |
7f6c5008 PS |
1913 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1914 | i = 0; | |
1915 | rest_len = wdata->bytes; | |
c28c89fc | 1916 | do { |
7f6c5008 PS |
1917 | struct cifs_writedata *wdata2; |
1918 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
1919 | ||
1920 | wsize = server->ops->wp_retry_size(inode); | |
1921 | if (wsize < rest_len) { | |
09cbfeaf | 1922 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
1923 | if (!nr_pages) { |
1924 | rc = -ENOTSUPP; | |
1925 | break; | |
1926 | } | |
09cbfeaf KS |
1927 | cur_len = nr_pages * PAGE_SIZE; |
1928 | tailsz = PAGE_SIZE; | |
7f6c5008 | 1929 | } else { |
09cbfeaf | 1930 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 1931 | cur_len = rest_len; |
09cbfeaf | 1932 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 1933 | } |
c28c89fc | 1934 | |
7f6c5008 PS |
1935 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
1936 | if (!wdata2) { | |
1937 | rc = -ENOMEM; | |
1938 | break; | |
c51bb0ea | 1939 | } |
7f6c5008 PS |
1940 | |
1941 | for (j = 0; j < nr_pages; j++) { | |
1942 | wdata2->pages[j] = wdata->pages[i + j]; | |
1943 | lock_page(wdata2->pages[j]); | |
1944 | clear_page_dirty_for_io(wdata2->pages[j]); | |
1945 | } | |
1946 | ||
1947 | wdata2->sync_mode = wdata->sync_mode; | |
1948 | wdata2->nr_pages = nr_pages; | |
1949 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 1950 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
1951 | wdata2->tailsz = tailsz; |
1952 | wdata2->bytes = cur_len; | |
1953 | ||
1954 | wdata2->cfile = find_writable_file(CIFS_I(inode), false); | |
1955 | if (!wdata2->cfile) { | |
1956 | cifs_dbg(VFS, "No writable handles for inode\n"); | |
1957 | rc = -EBADF; | |
1958 | break; | |
1959 | } | |
1960 | wdata2->pid = wdata2->cfile->pid; | |
1961 | rc = server->ops->async_writev(wdata2, cifs_writedata_release); | |
1962 | ||
1963 | for (j = 0; j < nr_pages; j++) { | |
1964 | unlock_page(wdata2->pages[j]); | |
1965 | if (rc != 0 && rc != -EAGAIN) { | |
1966 | SetPageError(wdata2->pages[j]); | |
1967 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 1968 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
1969 | } |
1970 | } | |
1971 | ||
1972 | if (rc) { | |
1973 | kref_put(&wdata2->refcount, cifs_writedata_release); | |
1974 | if (rc == -EAGAIN) | |
1975 | continue; | |
1976 | break; | |
1977 | } | |
1978 | ||
1979 | rest_len -= cur_len; | |
1980 | i += nr_pages; | |
1981 | } while (i < wdata->nr_pages); | |
c28c89fc JL |
1982 | |
1983 | mapping_set_error(inode->i_mapping, rc); | |
1984 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1985 | } | |
1986 | ||
c2e87640 | 1987 | void |
c28c89fc JL |
1988 | cifs_writev_complete(struct work_struct *work) |
1989 | { | |
1990 | struct cifs_writedata *wdata = container_of(work, | |
1991 | struct cifs_writedata, work); | |
2b0143b5 | 1992 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
1993 | int i = 0; |
1994 | ||
1995 | if (wdata->result == 0) { | |
597b027f | 1996 | spin_lock(&inode->i_lock); |
c28c89fc | 1997 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1998 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1999 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2000 | wdata->bytes); | |
2001 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2002 | return cifs_writev_requeue(wdata); | |
2003 | ||
2004 | for (i = 0; i < wdata->nr_pages; i++) { | |
2005 | struct page *page = wdata->pages[i]; | |
2006 | if (wdata->result == -EAGAIN) | |
2007 | __set_page_dirty_nobuffers(page); | |
2008 | else if (wdata->result < 0) | |
2009 | SetPageError(page); | |
2010 | end_page_writeback(page); | |
09cbfeaf | 2011 | put_page(page); |
c28c89fc JL |
2012 | } |
2013 | if (wdata->result != -EAGAIN) | |
2014 | mapping_set_error(inode->i_mapping, wdata->result); | |
2015 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2016 | } | |
2017 | ||
2018 | struct cifs_writedata * | |
c2e87640 | 2019 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
2020 | { |
2021 | struct cifs_writedata *wdata; | |
2022 | ||
c28c89fc JL |
2023 | /* writedata + number of page pointers */ |
2024 | wdata = kzalloc(sizeof(*wdata) + | |
26c8f0d6 | 2025 | sizeof(struct page *) * nr_pages, GFP_NOFS); |
c28c89fc | 2026 | if (wdata != NULL) { |
c28c89fc | 2027 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2028 | INIT_LIST_HEAD(&wdata->list); |
2029 | init_completion(&wdata->done); | |
2030 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2031 | } |
2032 | return wdata; | |
2033 | } | |
2034 | ||
2035 | /* | |
7c9421e1 | 2036 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2037 | * workqueue completion task. |
2038 | */ | |
2039 | static void | |
2040 | cifs_writev_callback(struct mid_q_entry *mid) | |
2041 | { | |
2042 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2043 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
5fb4e288 | 2044 | struct TCP_Server_Info *server = tcon->ses->server; |
c28c89fc JL |
2045 | unsigned int written; |
2046 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2047 | ||
7c9421e1 | 2048 | switch (mid->mid_state) { |
c28c89fc JL |
2049 | case MID_RESPONSE_RECEIVED: |
2050 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2051 | if (wdata->result != 0) | |
2052 | break; | |
2053 | ||
2054 | written = le16_to_cpu(smb->CountHigh); | |
2055 | written <<= 16; | |
2056 | written += le16_to_cpu(smb->Count); | |
2057 | /* | |
2058 | * Mask off high 16 bits when bytes written as returned | |
2059 | * by the server is greater than bytes requested by the | |
2060 | * client. OS/2 servers are known to set incorrect | |
2061 | * CountHigh values. | |
2062 | */ | |
2063 | if (written > wdata->bytes) | |
2064 | written &= 0xFFFF; | |
2065 | ||
2066 | if (written < wdata->bytes) | |
2067 | wdata->result = -ENOSPC; | |
2068 | else | |
2069 | wdata->bytes = written; | |
2070 | break; | |
2071 | case MID_REQUEST_SUBMITTED: | |
2072 | case MID_RETRY_NEEDED: | |
2073 | wdata->result = -EAGAIN; | |
2074 | break; | |
2075 | default: | |
2076 | wdata->result = -EIO; | |
2077 | break; | |
2078 | } | |
2079 | ||
da472fc8 | 2080 | queue_work(cifsiod_wq, &wdata->work); |
5fb4e288 | 2081 | mutex_lock(&server->srv_mutex); |
c28c89fc | 2082 | DeleteMidQEntry(mid); |
5fb4e288 | 2083 | mutex_unlock(&server->srv_mutex); |
a891f0f8 | 2084 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2085 | } |
2086 | ||
2087 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2088 | int | |
4a5c80d7 SF |
2089 | cifs_async_writev(struct cifs_writedata *wdata, |
2090 | void (*release)(struct kref *kref)) | |
c28c89fc | 2091 | { |
eddb079d | 2092 | int rc = -EACCES; |
c28c89fc JL |
2093 | WRITE_REQ *smb = NULL; |
2094 | int wct; | |
96daf2b0 | 2095 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079d | 2096 | struct kvec iov; |
fec344e3 | 2097 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2098 | |
2099 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2100 | wct = 14; | |
2101 | } else { | |
2102 | wct = 12; | |
2103 | if (wdata->offset >> 32 > 0) { | |
2104 | /* can not handle big offset for old srv */ | |
2105 | return -EIO; | |
2106 | } | |
2107 | } | |
2108 | ||
2109 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2110 | if (rc) | |
2111 | goto async_writev_out; | |
2112 | ||
fe5f5d2e JL |
2113 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2114 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2115 | |
c28c89fc | 2116 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2117 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2118 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2119 | if (wct == 14) | |
2120 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2121 | smb->Reserved = 0xFFFFFFFF; | |
2122 | smb->WriteMode = 0; | |
2123 | smb->Remaining = 0; | |
2124 | ||
2125 | smb->DataOffset = | |
2126 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2127 | ||
2128 | /* 4 for RFC1001 length + 1 for BCC */ | |
eddb079d JL |
2129 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; |
2130 | iov.iov_base = smb; | |
c28c89fc | 2131 | |
eddb079d JL |
2132 | rqst.rq_iov = &iov; |
2133 | rqst.rq_nvec = 1; | |
2134 | rqst.rq_pages = wdata->pages; | |
2135 | rqst.rq_npages = wdata->nr_pages; | |
2136 | rqst.rq_pagesz = wdata->pagesz; | |
2137 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2138 | |
f96637be JP |
2139 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2140 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2141 | |
2142 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2143 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2144 | ||
2145 | if (wct == 14) { | |
2146 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2147 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2148 | } else { | |
2149 | /* wct == 12 */ | |
2150 | struct smb_com_writex_req *smbw = | |
2151 | (struct smb_com_writex_req *)smb; | |
2152 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2153 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
eddb079d | 2154 | iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2155 | } |
2156 | ||
2157 | kref_get(&wdata->refcount); | |
fec344e3 JL |
2158 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
2159 | cifs_writev_callback, wdata, 0); | |
c28c89fc JL |
2160 | |
2161 | if (rc == 0) | |
44c58186 | 2162 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2163 | else |
4a5c80d7 | 2164 | kref_put(&wdata->refcount, release); |
c28c89fc | 2165 | |
c28c89fc JL |
2166 | async_writev_out: |
2167 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2168 | return rc; |
2169 | } | |
2170 | ||
d6e04ae6 | 2171 | int |
6d5786a3 | 2172 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2173 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2174 | { |
2175 | int rc = -EACCES; | |
2176 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2177 | int wct; |
d6e04ae6 | 2178 | int smb_hdr_len; |
ec637e3f | 2179 | int resp_buf_type = 0; |
fa2989f4 PS |
2180 | __u32 pid = io_parms->pid; |
2181 | __u16 netfid = io_parms->netfid; | |
2182 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2183 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2184 | unsigned int count = io_parms->length; |
1da177e4 | 2185 | |
fbec9ab9 JL |
2186 | *nbytes = 0; |
2187 | ||
f96637be | 2188 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2189 | |
4c3130ef | 2190 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2191 | wct = 14; |
4c3130ef | 2192 | } else { |
8cc64c6e | 2193 | wct = 12; |
4c3130ef SF |
2194 | if ((offset >> 32) > 0) { |
2195 | /* can not handle big offset for old srv */ | |
2196 | return -EIO; | |
2197 | } | |
2198 | } | |
8cc64c6e | 2199 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2200 | if (rc) |
2201 | return rc; | |
fa2989f4 PS |
2202 | |
2203 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2204 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2205 | ||
1da177e4 LT |
2206 | /* tcon and ses pointer are checked in smb_init */ |
2207 | if (tcon->ses->server == NULL) | |
2208 | return -ECONNABORTED; | |
2209 | ||
d6e04ae6 | 2210 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2211 | pSMB->Fid = netfid; |
2212 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2213 | if (wct == 14) |
8cc64c6e | 2214 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2215 | pSMB->Reserved = 0xFFFFFFFF; |
2216 | pSMB->WriteMode = 0; | |
2217 | pSMB->Remaining = 0; | |
d6e04ae6 | 2218 | |
1da177e4 | 2219 | pSMB->DataOffset = |
50c2f753 | 2220 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2221 | |
3e84469d SF |
2222 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2223 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2224 | /* header + 1 byte pad */ |
2225 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2226 | if (wct == 14) |
be8e3b00 | 2227 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2228 | else /* wct == 12 */ |
be8e3b00 | 2229 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2230 | if (wct == 14) |
8cc64c6e SF |
2231 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2232 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2233 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2234 | (struct smb_com_writex_req *)pSMB; |
2235 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2236 | } | |
3e84469d | 2237 | iov[0].iov_base = pSMB; |
790fe579 | 2238 | if (wct == 14) |
ec637e3f SF |
2239 | iov[0].iov_len = smb_hdr_len + 4; |
2240 | else /* wct == 12 pad bigger by four bytes */ | |
2241 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2242 | |
1da177e4 | 2243 | |
ba9ad725 | 2244 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c58186 | 2245 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2246 | if (rc) { |
f96637be | 2247 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2248 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2249 | /* presumably this can not happen, but best to be safe */ |
2250 | rc = -EIO; | |
d6e04ae6 | 2251 | } else { |
ad7a2926 | 2252 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2253 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2254 | *nbytes = (*nbytes) << 16; | |
2255 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2256 | |
2257 | /* | |
2258 | * Mask off high 16 bits when bytes written as returned by the | |
2259 | * server is greater than bytes requested by the client. OS/2 | |
2260 | * servers are known to set incorrect CountHigh values. | |
2261 | */ | |
2262 | if (*nbytes > count) | |
2263 | *nbytes &= 0xFFFF; | |
50c2f753 | 2264 | } |
1da177e4 | 2265 | |
4b8f930f | 2266 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
6d81ed1e | 2267 | free_rsp_buf(resp_buf_type, iov[0].iov_base); |
1da177e4 | 2268 | |
50c2f753 | 2269 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2270 | since file handle passed in no longer valid */ |
2271 | ||
2272 | return rc; | |
2273 | } | |
d6e04ae6 | 2274 | |
6d5786a3 PS |
2275 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2276 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2277 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2278 | { | |
2279 | int rc = 0; | |
2280 | LOCK_REQ *pSMB = NULL; | |
2281 | struct kvec iov[2]; | |
2282 | int resp_buf_type; | |
2283 | __u16 count; | |
2284 | ||
f96637be JP |
2285 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2286 | num_lock, num_unlock); | |
9ee305b7 PS |
2287 | |
2288 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2289 | if (rc) | |
2290 | return rc; | |
2291 | ||
2292 | pSMB->Timeout = 0; | |
2293 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2294 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2295 | pSMB->LockType = lock_type; | |
2296 | pSMB->AndXCommand = 0xFF; /* none */ | |
2297 | pSMB->Fid = netfid; /* netfid stays le */ | |
2298 | ||
2299 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2300 | inc_rfc1001_len(pSMB, count); | |
2301 | pSMB->ByteCount = cpu_to_le16(count); | |
2302 | ||
2303 | iov[0].iov_base = (char *)pSMB; | |
2304 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2305 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2306 | iov[1].iov_base = (char *)buf; | |
2307 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2308 | ||
44c58186 | 2309 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2310 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2311 | if (rc) | |
f96637be | 2312 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2313 | |
2314 | return rc; | |
2315 | } | |
d6e04ae6 | 2316 | |
1da177e4 | 2317 | int |
6d5786a3 | 2318 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2319 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2320 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2321 | const __u32 numLock, const __u8 lockType, |
2322 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2323 | { |
2324 | int rc = 0; | |
2325 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2326 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2327 | int bytes_returned; |
a891f0f8 | 2328 | int flags = 0; |
1da177e4 LT |
2329 | __u16 count; |
2330 | ||
f96637be JP |
2331 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2332 | (int)waitFlag, numLock); | |
46810cbf SF |
2333 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2334 | ||
1da177e4 LT |
2335 | if (rc) |
2336 | return rc; | |
2337 | ||
790fe579 | 2338 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2339 | /* no response expected */ |
2340 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2341 | pSMB->Timeout = 0; |
4b18f2a9 | 2342 | } else if (waitFlag) { |
a891f0f8 | 2343 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2344 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2345 | } else { | |
2346 | pSMB->Timeout = 0; | |
2347 | } | |
2348 | ||
2349 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2350 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2351 | pSMB->LockType = lockType; | |
12fed00d | 2352 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2353 | pSMB->AndXCommand = 0xFF; /* none */ |
2354 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2355 | ||
790fe579 | 2356 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2357 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2358 | /* BB where to store pid high? */ |
2359 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2360 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2361 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2362 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2363 | count = sizeof(LOCKING_ANDX_RANGE); | |
2364 | } else { | |
2365 | /* oplock break */ | |
2366 | count = 0; | |
2367 | } | |
be8e3b00 | 2368 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2369 | pSMB->ByteCount = cpu_to_le16(count); |
2370 | ||
7ee1af76 JA |
2371 | if (waitFlag) { |
2372 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2373 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2374 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2375 | } else { |
a891f0f8 | 2376 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2377 | /* SMB buffer freed by function above */ |
7ee1af76 | 2378 | } |
44c58186 | 2379 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2380 | if (rc) |
f96637be | 2381 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2382 | |
50c2f753 | 2383 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2384 | since file handle passed in no longer valid */ |
2385 | return rc; | |
2386 | } | |
2387 | ||
08547b03 | 2388 | int |
6d5786a3 | 2389 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2390 | const __u16 smb_file_id, const __u32 netpid, |
2391 | const loff_t start_offset, const __u64 len, | |
2392 | struct file_lock *pLockData, const __u16 lock_type, | |
2393 | const bool waitFlag) | |
08547b03 SF |
2394 | { |
2395 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2396 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2397 | struct cifs_posix_lock *parm_data; |
2398 | int rc = 0; | |
3a5ff61c | 2399 | int timeout = 0; |
08547b03 | 2400 | int bytes_returned = 0; |
133672ef | 2401 | int resp_buf_type = 0; |
08547b03 | 2402 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2403 | struct kvec iov[1]; |
08547b03 | 2404 | |
f96637be | 2405 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2406 | |
08547b03 SF |
2407 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2408 | ||
2409 | if (rc) | |
2410 | return rc; | |
2411 | ||
2412 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2413 | ||
50c2f753 | 2414 | params = 6; |
08547b03 SF |
2415 | pSMB->MaxSetupCount = 0; |
2416 | pSMB->Reserved = 0; | |
2417 | pSMB->Flags = 0; | |
08547b03 SF |
2418 | pSMB->Reserved2 = 0; |
2419 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2420 | offset = param_offset + params; | |
2421 | ||
08547b03 SF |
2422 | count = sizeof(struct cifs_posix_lock); |
2423 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2424 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2425 | pSMB->SetupCount = 1; |
2426 | pSMB->Reserved3 = 0; | |
c5fd363d | 2427 | if (pLockData) |
08547b03 SF |
2428 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2429 | else | |
2430 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2431 | byte_count = 3 /* pad */ + params + count; | |
2432 | pSMB->DataCount = cpu_to_le16(count); | |
2433 | pSMB->ParameterCount = cpu_to_le16(params); | |
2434 | pSMB->TotalDataCount = pSMB->DataCount; | |
2435 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2436 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2437 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2438 | (((char *) &pSMB->hdr.Protocol) + offset); |
2439 | ||
2440 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2441 | if (waitFlag) { |
133672ef | 2442 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2443 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2444 | pSMB->Timeout = cpu_to_le32(-1); |
2445 | } else | |
2446 | pSMB->Timeout = 0; | |
2447 | ||
4f6bcec9 | 2448 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2449 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2450 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2451 | |
2452 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2453 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2454 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2455 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2456 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2457 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2458 | if (waitFlag) { |
2459 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2460 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2461 | } else { | |
133672ef | 2462 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2463 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2464 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2465 | &resp_buf_type, timeout); | |
2466 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2467 | not try to free it twice below on exit */ | |
2468 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2469 | } |
2470 | ||
08547b03 | 2471 | if (rc) { |
f96637be | 2472 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2473 | } else if (pLockData) { |
fc94cdb9 SF |
2474 | /* lock structure can be returned on get */ |
2475 | __u16 data_offset; | |
2476 | __u16 data_count; | |
2477 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2478 | ||
820a803f | 2479 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2480 | rc = -EIO; /* bad smb */ |
2481 | goto plk_err_exit; | |
2482 | } | |
fc94cdb9 SF |
2483 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2484 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2485 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2486 | rc = -EIO; |
2487 | goto plk_err_exit; | |
2488 | } | |
2489 | parm_data = (struct cifs_posix_lock *) | |
2490 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2491 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2492 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2493 | else { |
2494 | if (parm_data->lock_type == | |
bc09d141 | 2495 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2496 | pLockData->fl_type = F_RDLCK; |
2497 | else if (parm_data->lock_type == | |
bc09d141 | 2498 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2499 | pLockData->fl_type = F_WRLCK; |
2500 | ||
5443d130 SF |
2501 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2502 | pLockData->fl_end = pLockData->fl_start + | |
2503 | le64_to_cpu(parm_data->length) - 1; | |
2504 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2505 | } |
08547b03 | 2506 | } |
50c2f753 | 2507 | |
fc94cdb9 | 2508 | plk_err_exit: |
08547b03 SF |
2509 | if (pSMB) |
2510 | cifs_small_buf_release(pSMB); | |
2511 | ||
6d81ed1e | 2512 | free_rsp_buf(resp_buf_type, iov[0].iov_base); |
133672ef | 2513 | |
08547b03 SF |
2514 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2515 | since file handle passed in no longer valid */ | |
2516 | ||
2517 | return rc; | |
2518 | } | |
2519 | ||
2520 | ||
1da177e4 | 2521 | int |
6d5786a3 | 2522 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2523 | { |
2524 | int rc = 0; | |
2525 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2526 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2527 | |
2528 | /* do not retry on dead session on close */ | |
2529 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2530 | if (rc == -EAGAIN) |
1da177e4 LT |
2531 | return 0; |
2532 | if (rc) | |
2533 | return rc; | |
2534 | ||
1da177e4 | 2535 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2536 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2537 | pSMB->ByteCount = 0; |
792af7b0 | 2538 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2539 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2540 | if (rc) { |
790fe579 | 2541 | if (rc != -EINTR) { |
1da177e4 | 2542 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2543 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2544 | } |
2545 | } | |
2546 | ||
1da177e4 | 2547 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2548 | if (rc == -EAGAIN) |
1da177e4 LT |
2549 | rc = 0; |
2550 | ||
2551 | return rc; | |
2552 | } | |
2553 | ||
b298f223 | 2554 | int |
6d5786a3 | 2555 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2556 | { |
2557 | int rc = 0; | |
2558 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2559 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2560 | |
2561 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2562 | if (rc) | |
2563 | return rc; | |
2564 | ||
2565 | pSMB->FileID = (__u16) smb_file_id; | |
2566 | pSMB->ByteCount = 0; | |
792af7b0 | 2567 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2568 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2569 | if (rc) |
f96637be | 2570 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2571 | |
2572 | return rc; | |
2573 | } | |
2574 | ||
1da177e4 | 2575 | int |
6d5786a3 | 2576 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2577 | const char *from_name, const char *to_name, |
2578 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2579 | { |
2580 | int rc = 0; | |
2581 | RENAME_REQ *pSMB = NULL; | |
2582 | RENAME_RSP *pSMBr = NULL; | |
2583 | int bytes_returned; | |
2584 | int name_len, name_len2; | |
2585 | __u16 count; | |
2baa2682 | 2586 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2587 | |
f96637be | 2588 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2589 | renameRetry: |
2590 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2591 | (void **) &pSMBr); | |
2592 | if (rc) | |
2593 | return rc; | |
2594 | ||
2595 | pSMB->BufferFormat = 0x04; | |
2596 | pSMB->SearchAttributes = | |
2597 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2598 | ATTR_DIRECTORY); | |
2599 | ||
2600 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2601 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2602 | from_name, PATH_MAX, | |
2603 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2604 | name_len++; /* trailing null */ |
2605 | name_len *= 2; | |
2606 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2607 | /* protocol requires ASCII signature byte on Unicode string */ | |
2608 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2609 | name_len2 = | |
acbbb76a | 2610 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2611 | to_name, PATH_MAX, cifs_sb->local_nls, |
2612 | remap); | |
1da177e4 LT |
2613 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2614 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2615 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2616 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2617 | name_len++; /* trailing null */ |
8ceb9843 PS |
2618 | strncpy(pSMB->OldFileName, from_name, name_len); |
2619 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2620 | name_len2++; /* trailing null */ |
2621 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2622 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2623 | name_len2++; /* trailing null */ |
2624 | name_len2++; /* signature byte */ | |
2625 | } | |
2626 | ||
2627 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2628 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2629 | pSMB->ByteCount = cpu_to_le16(count); |
2630 | ||
2631 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2632 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2633 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2634 | if (rc) |
f96637be | 2635 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2636 | |
1da177e4 LT |
2637 | cifs_buf_release(pSMB); |
2638 | ||
2639 | if (rc == -EAGAIN) | |
2640 | goto renameRetry; | |
2641 | ||
2642 | return rc; | |
2643 | } | |
2644 | ||
6d5786a3 | 2645 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2646 | int netfid, const char *target_name, |
50c2f753 | 2647 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2648 | { |
2649 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2650 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2651 | struct set_file_rename *rename_info; |
1da177e4 LT |
2652 | char *data_offset; |
2653 | char dummy_string[30]; | |
2654 | int rc = 0; | |
2655 | int bytes_returned = 0; | |
2656 | int len_of_str; | |
2657 | __u16 params, param_offset, offset, count, byte_count; | |
2658 | ||
f96637be | 2659 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2660 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2661 | (void **) &pSMBr); | |
2662 | if (rc) | |
2663 | return rc; | |
2664 | ||
2665 | params = 6; | |
2666 | pSMB->MaxSetupCount = 0; | |
2667 | pSMB->Reserved = 0; | |
2668 | pSMB->Flags = 0; | |
2669 | pSMB->Timeout = 0; | |
2670 | pSMB->Reserved2 = 0; | |
2671 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2672 | offset = param_offset + params; | |
2673 | ||
2674 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2675 | rename_info = (struct set_file_rename *) data_offset; | |
2676 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2677 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2678 | pSMB->SetupCount = 1; |
2679 | pSMB->Reserved3 = 0; | |
2680 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2681 | byte_count = 3 /* pad */ + params; | |
2682 | pSMB->ParameterCount = cpu_to_le16(params); | |
2683 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2684 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2685 | pSMB->DataOffset = cpu_to_le16(offset); | |
2686 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2687 | rename_info->overwrite = cpu_to_le32(1); | |
2688 | rename_info->root_fid = 0; | |
2689 | /* unicode only call */ | |
790fe579 | 2690 | if (target_name == NULL) { |
50c2f753 | 2691 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2692 | len_of_str = |
2693 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2694 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2695 | } else { |
acbbb76a SF |
2696 | len_of_str = |
2697 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2698 | target_name, PATH_MAX, nls_codepage, |
2699 | remap); | |
1da177e4 LT |
2700 | } |
2701 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2702 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2703 | byte_count += count; |
2704 | pSMB->DataCount = cpu_to_le16(count); | |
2705 | pSMB->TotalDataCount = pSMB->DataCount; | |
2706 | pSMB->Fid = netfid; | |
2707 | pSMB->InformationLevel = | |
2708 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2709 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2710 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2711 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2712 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2713 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2714 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2715 | if (rc) |
f96637be JP |
2716 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2717 | rc); | |
a5a2b489 | 2718 | |
1da177e4 LT |
2719 | cifs_buf_release(pSMB); |
2720 | ||
2721 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2722 | since file handle passed in no longer valid */ | |
2723 | ||
2724 | return rc; | |
2725 | } | |
2726 | ||
2727 | int | |
6d5786a3 PS |
2728 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2729 | const char *fromName, const __u16 target_tid, const char *toName, | |
2730 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2731 | { |
2732 | int rc = 0; | |
2733 | COPY_REQ *pSMB = NULL; | |
2734 | COPY_RSP *pSMBr = NULL; | |
2735 | int bytes_returned; | |
2736 | int name_len, name_len2; | |
2737 | __u16 count; | |
2738 | ||
f96637be | 2739 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2740 | copyRetry: |
2741 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2742 | (void **) &pSMBr); | |
2743 | if (rc) | |
2744 | return rc; | |
2745 | ||
2746 | pSMB->BufferFormat = 0x04; | |
2747 | pSMB->Tid2 = target_tid; | |
2748 | ||
2749 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2750 | ||
2751 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2752 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2753 | fromName, PATH_MAX, nls_codepage, | |
2754 | remap); | |
1da177e4 LT |
2755 | name_len++; /* trailing null */ |
2756 | name_len *= 2; | |
2757 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2758 | /* protocol requires ASCII signature byte on Unicode string */ | |
2759 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2760 | name_len2 = |
acbbb76a SF |
2761 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2762 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2763 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2764 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2765 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2766 | name_len = strnlen(fromName, PATH_MAX); |
2767 | name_len++; /* trailing null */ | |
2768 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2769 | name_len2 = strnlen(toName, PATH_MAX); | |
2770 | name_len2++; /* trailing null */ | |
2771 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2772 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2773 | name_len2++; /* trailing null */ | |
2774 | name_len2++; /* signature byte */ | |
2775 | } | |
2776 | ||
2777 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2778 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2779 | pSMB->ByteCount = cpu_to_le16(count); |
2780 | ||
2781 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2782 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2783 | if (rc) { | |
f96637be JP |
2784 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2785 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2786 | } |
0d817bc0 | 2787 | cifs_buf_release(pSMB); |
1da177e4 LT |
2788 | |
2789 | if (rc == -EAGAIN) | |
2790 | goto copyRetry; | |
2791 | ||
2792 | return rc; | |
2793 | } | |
2794 | ||
2795 | int | |
6d5786a3 | 2796 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2797 | const char *fromName, const char *toName, |
bc8ebdc4 | 2798 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2799 | { |
2800 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2801 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2802 | char *data_offset; | |
2803 | int name_len; | |
2804 | int name_len_target; | |
2805 | int rc = 0; | |
2806 | int bytes_returned = 0; | |
2807 | __u16 params, param_offset, offset, byte_count; | |
2808 | ||
f96637be | 2809 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2810 | createSymLinkRetry: |
2811 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2812 | (void **) &pSMBr); | |
2813 | if (rc) | |
2814 | return rc; | |
2815 | ||
2816 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2817 | name_len = | |
bc8ebdc4 NA |
2818 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2819 | /* find define for this maxpathcomponent */ | |
2820 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2821 | name_len++; /* trailing null */ |
2822 | name_len *= 2; | |
2823 | ||
50c2f753 | 2824 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2825 | name_len = strnlen(fromName, PATH_MAX); |
2826 | name_len++; /* trailing null */ | |
2827 | strncpy(pSMB->FileName, fromName, name_len); | |
2828 | } | |
2829 | params = 6 + name_len; | |
2830 | pSMB->MaxSetupCount = 0; | |
2831 | pSMB->Reserved = 0; | |
2832 | pSMB->Flags = 0; | |
2833 | pSMB->Timeout = 0; | |
2834 | pSMB->Reserved2 = 0; | |
2835 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2836 | InformationLevel) - 4; |
1da177e4 LT |
2837 | offset = param_offset + params; |
2838 | ||
2839 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2840 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2841 | name_len_target = | |
bc8ebdc4 NA |
2842 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2843 | /* find define for this maxpathcomponent */ | |
2844 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2845 | name_len_target++; /* trailing null */ |
2846 | name_len_target *= 2; | |
50c2f753 | 2847 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2848 | name_len_target = strnlen(toName, PATH_MAX); |
2849 | name_len_target++; /* trailing null */ | |
2850 | strncpy(data_offset, toName, name_len_target); | |
2851 | } | |
2852 | ||
2853 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2854 | /* BB find exact max on data count below from sess */ | |
2855 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2856 | pSMB->SetupCount = 1; | |
2857 | pSMB->Reserved3 = 0; | |
2858 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2859 | byte_count = 3 /* pad */ + params + name_len_target; | |
2860 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2861 | pSMB->ParameterCount = cpu_to_le16(params); | |
2862 | pSMB->TotalDataCount = pSMB->DataCount; | |
2863 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2864 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2865 | pSMB->DataOffset = cpu_to_le16(offset); | |
2866 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2867 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2868 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2869 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2870 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2871 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2872 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2873 | if (rc) |
f96637be JP |
2874 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2875 | rc); | |
1da177e4 | 2876 | |
0d817bc0 | 2877 | cifs_buf_release(pSMB); |
1da177e4 LT |
2878 | |
2879 | if (rc == -EAGAIN) | |
2880 | goto createSymLinkRetry; | |
2881 | ||
2882 | return rc; | |
2883 | } | |
2884 | ||
2885 | int | |
6d5786a3 | 2886 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2887 | const char *fromName, const char *toName, |
737b758c | 2888 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2889 | { |
2890 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2891 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2892 | char *data_offset; | |
2893 | int name_len; | |
2894 | int name_len_target; | |
2895 | int rc = 0; | |
2896 | int bytes_returned = 0; | |
2897 | __u16 params, param_offset, offset, byte_count; | |
2898 | ||
f96637be | 2899 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2900 | createHardLinkRetry: |
2901 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2902 | (void **) &pSMBr); | |
2903 | if (rc) | |
2904 | return rc; | |
2905 | ||
2906 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2907 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2908 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2909 | name_len++; /* trailing null */ |
2910 | name_len *= 2; | |
2911 | ||
50c2f753 | 2912 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2913 | name_len = strnlen(toName, PATH_MAX); |
2914 | name_len++; /* trailing null */ | |
2915 | strncpy(pSMB->FileName, toName, name_len); | |
2916 | } | |
2917 | params = 6 + name_len; | |
2918 | pSMB->MaxSetupCount = 0; | |
2919 | pSMB->Reserved = 0; | |
2920 | pSMB->Flags = 0; | |
2921 | pSMB->Timeout = 0; | |
2922 | pSMB->Reserved2 = 0; | |
2923 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2924 | InformationLevel) - 4; |
1da177e4 LT |
2925 | offset = param_offset + params; |
2926 | ||
2927 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2928 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2929 | name_len_target = | |
acbbb76a SF |
2930 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2931 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2932 | name_len_target++; /* trailing null */ |
2933 | name_len_target *= 2; | |
50c2f753 | 2934 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2935 | name_len_target = strnlen(fromName, PATH_MAX); |
2936 | name_len_target++; /* trailing null */ | |
2937 | strncpy(data_offset, fromName, name_len_target); | |
2938 | } | |
2939 | ||
2940 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2941 | /* BB find exact max on data count below from sess*/ | |
2942 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2943 | pSMB->SetupCount = 1; | |
2944 | pSMB->Reserved3 = 0; | |
2945 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2946 | byte_count = 3 /* pad */ + params + name_len_target; | |
2947 | pSMB->ParameterCount = cpu_to_le16(params); | |
2948 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2949 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2950 | pSMB->TotalDataCount = pSMB->DataCount; | |
2951 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2952 | pSMB->DataOffset = cpu_to_le16(offset); | |
2953 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2954 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2955 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2956 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2957 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2958 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2959 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2960 | if (rc) |
f96637be JP |
2961 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2962 | rc); | |
1da177e4 LT |
2963 | |
2964 | cifs_buf_release(pSMB); | |
2965 | if (rc == -EAGAIN) | |
2966 | goto createHardLinkRetry; | |
2967 | ||
2968 | return rc; | |
2969 | } | |
2970 | ||
2971 | int | |
6d5786a3 | 2972 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2973 | const char *from_name, const char *to_name, |
2974 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2975 | { |
2976 | int rc = 0; | |
2977 | NT_RENAME_REQ *pSMB = NULL; | |
2978 | RENAME_RSP *pSMBr = NULL; | |
2979 | int bytes_returned; | |
2980 | int name_len, name_len2; | |
2981 | __u16 count; | |
2baa2682 | 2982 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2983 | |
f96637be | 2984 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2985 | winCreateHardLinkRetry: |
2986 | ||
2987 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2988 | (void **) &pSMBr); | |
2989 | if (rc) | |
2990 | return rc; | |
2991 | ||
2992 | pSMB->SearchAttributes = | |
2993 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2994 | ATTR_DIRECTORY); | |
2995 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2996 | pSMB->ClusterCount = 0; | |
2997 | ||
2998 | pSMB->BufferFormat = 0x04; | |
2999 | ||
3000 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3001 | name_len = | |
d6e906f1 SF |
3002 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3003 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3004 | name_len++; /* trailing null */ |
3005 | name_len *= 2; | |
fcc7c09d JL |
3006 | |
3007 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3008 | pSMB->OldFileName[name_len] = 0x04; | |
3009 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3010 | name_len2 = |
acbbb76a | 3011 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3012 | to_name, PATH_MAX, cifs_sb->local_nls, |
3013 | remap); | |
1da177e4 LT |
3014 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3015 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 3016 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 3017 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 3018 | name_len++; /* trailing null */ |
d6e906f1 SF |
3019 | strncpy(pSMB->OldFileName, from_name, name_len); |
3020 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
3021 | name_len2++; /* trailing null */ |
3022 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 3023 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
3024 | name_len2++; /* trailing null */ |
3025 | name_len2++; /* signature byte */ | |
3026 | } | |
3027 | ||
3028 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3029 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3030 | pSMB->ByteCount = cpu_to_le16(count); |
3031 | ||
3032 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3033 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3034 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3035 | if (rc) |
f96637be | 3036 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3037 | |
1da177e4 LT |
3038 | cifs_buf_release(pSMB); |
3039 | if (rc == -EAGAIN) | |
3040 | goto winCreateHardLinkRetry; | |
3041 | ||
3042 | return rc; | |
3043 | } | |
3044 | ||
3045 | int | |
6d5786a3 | 3046 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3047 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3048 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3049 | { |
3050 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3051 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3052 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3053 | int rc = 0; | |
3054 | int bytes_returned; | |
3055 | int name_len; | |
3056 | __u16 params, byte_count; | |
460b9696 | 3057 | char *data_start; |
1da177e4 | 3058 | |
f96637be | 3059 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3060 | |
3061 | querySymLinkRetry: | |
3062 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3063 | (void **) &pSMBr); | |
3064 | if (rc) | |
3065 | return rc; | |
3066 | ||
3067 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3068 | name_len = | |
bc8ebdc4 NA |
3069 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3070 | searchName, PATH_MAX, nls_codepage, | |
3071 | remap); | |
1da177e4 LT |
3072 | name_len++; /* trailing null */ |
3073 | name_len *= 2; | |
50c2f753 | 3074 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3075 | name_len = strnlen(searchName, PATH_MAX); |
3076 | name_len++; /* trailing null */ | |
3077 | strncpy(pSMB->FileName, searchName, name_len); | |
3078 | } | |
3079 | ||
3080 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3081 | pSMB->TotalDataCount = 0; | |
3082 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3083 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3084 | pSMB->MaxSetupCount = 0; |
3085 | pSMB->Reserved = 0; | |
3086 | pSMB->Flags = 0; | |
3087 | pSMB->Timeout = 0; | |
3088 | pSMB->Reserved2 = 0; | |
3089 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3090 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3091 | pSMB->DataCount = 0; |
3092 | pSMB->DataOffset = 0; | |
3093 | pSMB->SetupCount = 1; | |
3094 | pSMB->Reserved3 = 0; | |
3095 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3096 | byte_count = params + 1 /* pad */ ; | |
3097 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3098 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3099 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3100 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3101 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3102 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3103 | ||
3104 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3105 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3106 | if (rc) { | |
f96637be | 3107 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3108 | } else { |
3109 | /* decode response */ | |
3110 | ||
3111 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3112 | /* BB also check enough total bytes returned */ |
820a803f | 3113 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3114 | rc = -EIO; |
1da177e4 | 3115 | else { |
0e0d2cf3 | 3116 | bool is_unicode; |
460b9696 JL |
3117 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3118 | ||
3119 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3120 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3121 | |
0e0d2cf3 SF |
3122 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3123 | is_unicode = true; | |
3124 | else | |
3125 | is_unicode = false; | |
3126 | ||
737b758c | 3127 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3128 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3129 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3130 | if (!*symlinkinfo) |
460b9696 | 3131 | rc = -ENOMEM; |
1da177e4 LT |
3132 | } |
3133 | } | |
3134 | cifs_buf_release(pSMB); | |
3135 | if (rc == -EAGAIN) | |
3136 | goto querySymLinkRetry; | |
3137 | return rc; | |
3138 | } | |
3139 | ||
c52a9554 SF |
3140 | /* |
3141 | * Recent Windows versions now create symlinks more frequently | |
3142 | * and they use the "reparse point" mechanism below. We can of course | |
3143 | * do symlinks nicely to Samba and other servers which support the | |
3144 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3145 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3146 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3147 | * In the interim this code has been moved to its own config option so | |
3148 | * it is not compiled in by default until callers fixed up and more tested. | |
3149 | */ | |
1da177e4 | 3150 | int |
d244bf2d PS |
3151 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3152 | __u16 fid, char **symlinkinfo, | |
3153 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3154 | { |
3155 | int rc = 0; | |
3156 | int bytes_returned; | |
50c2f753 SF |
3157 | struct smb_com_transaction_ioctl_req *pSMB; |
3158 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3159 | bool is_unicode; |
3160 | unsigned int sub_len; | |
3161 | char *sub_start; | |
c31f3307 SF |
3162 | struct reparse_symlink_data *reparse_buf; |
3163 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3164 | __u32 data_offset, data_count; |
3165 | char *end_of_smb; | |
3166 | ||
3167 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3168 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3169 | (void **) &pSMBr); | |
3170 | if (rc) | |
3171 | return rc; | |
3172 | ||
3173 | pSMB->TotalParameterCount = 0 ; | |
3174 | pSMB->TotalDataCount = 0; | |
3175 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3176 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3177 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3178 | pSMB->MaxSetupCount = 4; |
3179 | pSMB->Reserved = 0; | |
3180 | pSMB->ParameterOffset = 0; | |
3181 | pSMB->DataCount = 0; | |
3182 | pSMB->DataOffset = 0; | |
3183 | pSMB->SetupCount = 4; | |
3184 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3185 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3186 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3187 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3188 | pSMB->IsRootFlag = 0; | |
3189 | pSMB->Fid = fid; /* file handle always le */ | |
3190 | pSMB->ByteCount = 0; | |
3191 | ||
3192 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3193 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3194 | if (rc) { | |
f96637be | 3195 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3196 | goto qreparse_out; |
3197 | } | |
3198 | ||
3199 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3200 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3201 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3202 | /* BB also check enough total bytes returned */ | |
3203 | rc = -EIO; /* bad smb */ | |
3204 | goto qreparse_out; | |
3205 | } | |
3206 | if (!data_count || (data_count > 2048)) { | |
3207 | rc = -EIO; | |
3208 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3209 | goto qreparse_out; | |
3210 | } | |
3211 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3212 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3213 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3214 | if ((char *)reparse_buf >= end_of_smb) { | |
3215 | rc = -EIO; | |
3216 | goto qreparse_out; | |
1da177e4 | 3217 | } |
c31f3307 SF |
3218 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3219 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3220 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3221 | ||
3222 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3223 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3224 | le64_to_cpu(posix_buf->InodeType)); | |
3225 | rc = -EOPNOTSUPP; | |
3226 | goto qreparse_out; | |
3227 | } | |
3228 | is_unicode = true; | |
3229 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3230 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3231 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3232 | rc = -EIO; | |
3233 | goto qreparse_out; | |
3234 | } | |
3235 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3236 | sub_len, is_unicode, nls_codepage); | |
3237 | goto qreparse_out; | |
3238 | } else if (reparse_buf->ReparseTag != | |
3239 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3240 | rc = -EOPNOTSUPP; | |
3241 | goto qreparse_out; | |
3242 | } | |
3243 | ||
3244 | /* Reparse tag is NTFS symlink */ | |
3245 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3246 | reparse_buf->PathBuffer; | |
3247 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3248 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3249 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3250 | rc = -EIO; | |
3251 | goto qreparse_out; | |
3252 | } | |
d244bf2d PS |
3253 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3254 | is_unicode = true; | |
3255 | else | |
3256 | is_unicode = false; | |
989c7e51 | 3257 | |
d244bf2d PS |
3258 | /* BB FIXME investigate remapping reserved chars here */ |
3259 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3260 | nls_codepage); | |
3261 | if (!*symlinkinfo) | |
3262 | rc = -ENOMEM; | |
1da177e4 | 3263 | qreparse_out: |
4a6d87f1 | 3264 | cifs_buf_release(pSMB); |
1da177e4 | 3265 | |
d244bf2d PS |
3266 | /* |
3267 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3268 | * since file handle passed in no longer valid. | |
3269 | */ | |
1da177e4 LT |
3270 | return rc; |
3271 | } | |
3272 | ||
c7f508a9 SF |
3273 | int |
3274 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3275 | __u16 fid) | |
3276 | { | |
3277 | int rc = 0; | |
3278 | int bytes_returned; | |
3279 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3280 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3281 | ||
3282 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3283 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3284 | (void **) &pSMBr); | |
3285 | if (rc) | |
3286 | return rc; | |
3287 | ||
3288 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3289 | ||
3290 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3291 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3292 | pSMB->MaxParameterCount = 0; |
3293 | pSMB->MaxDataCount = 0; | |
3294 | pSMB->MaxSetupCount = 4; | |
3295 | pSMB->Reserved = 0; | |
3296 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3297 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3298 | pSMB->DataOffset = |
3299 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3300 | compression_state) - 4); /* 84 */ | |
3301 | pSMB->SetupCount = 4; | |
bc09d141 | 3302 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3303 | pSMB->ParameterCount = 0; |
bc09d141 | 3304 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3305 | pSMB->IsFsctl = 1; /* FSCTL */ |
3306 | pSMB->IsRootFlag = 0; | |
3307 | pSMB->Fid = fid; /* file handle always le */ | |
3308 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3309 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3310 | inc_rfc1001_len(pSMB, 5); |
3311 | ||
3312 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3313 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3314 | if (rc) | |
3315 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3316 | ||
3317 | cifs_buf_release(pSMB); | |
3318 | ||
3319 | /* | |
3320 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3321 | * since file handle passed in no longer valid. | |
3322 | */ | |
3323 | return rc; | |
3324 | } | |
3325 | ||
3326 | ||
1da177e4 LT |
3327 | #ifdef CONFIG_CIFS_POSIX |
3328 | ||
3329 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3330 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3331 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3332 | { |
3333 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3334 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3335 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3336 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3337 | /* |
3338 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3339 | ace->e_perm, ace->e_tag, ace->e_id); | |
3340 | */ | |
1da177e4 LT |
3341 | |
3342 | return; | |
3343 | } | |
3344 | ||
3345 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3346 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3347 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3348 | { |
3349 | int size = 0; | |
3350 | int i; | |
3351 | __u16 count; | |
50c2f753 SF |
3352 | struct cifs_posix_ace *pACE; |
3353 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3354 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3355 | |
3356 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3357 | return -EOPNOTSUPP; | |
3358 | ||
45987e00 | 3359 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3360 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3361 | pACE = &cifs_acl->ace_array[0]; | |
3362 | size = sizeof(struct cifs_posix_acl); | |
3363 | size += sizeof(struct cifs_posix_ace) * count; | |
3364 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3365 | if (size_of_data_area < size) { |
f96637be JP |
3366 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3367 | size_of_data_area, size); | |
1da177e4 LT |
3368 | return -EINVAL; |
3369 | } | |
45987e00 | 3370 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3371 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3372 | size = sizeof(struct cifs_posix_acl); | |
3373 | size += sizeof(struct cifs_posix_ace) * count; | |
3374 | /* skip past access ACEs to get to default ACEs */ | |
3375 | pACE = &cifs_acl->ace_array[count]; | |
3376 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3377 | size += sizeof(struct cifs_posix_ace) * count; | |
3378 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3379 | if (size_of_data_area < size) |
1da177e4 LT |
3380 | return -EINVAL; |
3381 | } else { | |
3382 | /* illegal type */ | |
3383 | return -EINVAL; | |
3384 | } | |
3385 | ||
3386 | size = posix_acl_xattr_size(count); | |
790fe579 | 3387 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3388 | /* used to query ACL EA size */ |
790fe579 | 3389 | } else if (size > buflen) { |
1da177e4 LT |
3390 | return -ERANGE; |
3391 | } else /* buffer big enough */ { | |
2211d5ba AG |
3392 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3393 | ||
ff7feac9 | 3394 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3395 | for (i = 0; i < count ; i++) { |
2211d5ba | 3396 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3397 | pACE++; |
1da177e4 LT |
3398 | } |
3399 | } | |
3400 | return size; | |
3401 | } | |
3402 | ||
50c2f753 | 3403 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3404 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 LT |
3405 | { |
3406 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3407 | ||
ff7feac9 SF |
3408 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3409 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3410 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3411 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3412 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3413 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3414 | } else |
ff7feac9 | 3415 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3416 | /* |
3417 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3418 | ace->e_perm, ace->e_tag, ace->e_id); | |
3419 | */ | |
1da177e4 LT |
3420 | return rc; |
3421 | } | |
3422 | ||
3423 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3424 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3425 | const int buflen, const int acl_type) | |
1da177e4 LT |
3426 | { |
3427 | __u16 rc = 0; | |
50c2f753 | 3428 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3429 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3430 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3431 | int count; |
3432 | int i; | |
3433 | ||
790fe579 | 3434 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3435 | return 0; |
3436 | ||
3437 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3438 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3439 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3440 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3441 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3442 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3443 | return 0; |
3444 | } | |
3445 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3446 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3447 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3448 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3449 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3450 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3451 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3452 | } else { |
f96637be | 3453 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3454 | return 0; |
3455 | } | |
50c2f753 | 3456 | for (i = 0; i < count; i++) { |
ae9ebe7c | 3457 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); |
790fe579 | 3458 | if (rc != 0) { |
1da177e4 LT |
3459 | /* ACE not converted */ |
3460 | break; | |
3461 | } | |
3462 | } | |
790fe579 | 3463 | if (rc == 0) { |
1da177e4 LT |
3464 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3465 | rc += sizeof(struct cifs_posix_acl); | |
3466 | /* BB add check to make sure ACL does not overflow SMB */ | |
3467 | } | |
3468 | return rc; | |
3469 | } | |
3470 | ||
3471 | int | |
6d5786a3 | 3472 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3473 | const unsigned char *searchName, |
3474 | char *acl_inf, const int buflen, const int acl_type, | |
3475 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3476 | { |
3477 | /* SMB_QUERY_POSIX_ACL */ | |
3478 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3479 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3480 | int rc = 0; | |
3481 | int bytes_returned; | |
3482 | int name_len; | |
3483 | __u16 params, byte_count; | |
50c2f753 | 3484 | |
f96637be | 3485 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3486 | |
3487 | queryAclRetry: | |
3488 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3489 | (void **) &pSMBr); | |
3490 | if (rc) | |
3491 | return rc; | |
50c2f753 | 3492 | |
1da177e4 LT |
3493 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3494 | name_len = | |
acbbb76a SF |
3495 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3496 | searchName, PATH_MAX, nls_codepage, | |
3497 | remap); | |
1da177e4 LT |
3498 | name_len++; /* trailing null */ |
3499 | name_len *= 2; | |
3500 | pSMB->FileName[name_len] = 0; | |
3501 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3502 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3503 | name_len = strnlen(searchName, PATH_MAX); |
3504 | name_len++; /* trailing null */ | |
3505 | strncpy(pSMB->FileName, searchName, name_len); | |
3506 | } | |
3507 | ||
3508 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3509 | pSMB->TotalDataCount = 0; | |
3510 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3511 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3512 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3513 | pSMB->MaxSetupCount = 0; | |
3514 | pSMB->Reserved = 0; | |
3515 | pSMB->Flags = 0; | |
3516 | pSMB->Timeout = 0; | |
3517 | pSMB->Reserved2 = 0; | |
3518 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3519 | offsetof(struct smb_com_transaction2_qpi_req, |
3520 | InformationLevel) - 4); | |
1da177e4 LT |
3521 | pSMB->DataCount = 0; |
3522 | pSMB->DataOffset = 0; | |
3523 | pSMB->SetupCount = 1; | |
3524 | pSMB->Reserved3 = 0; | |
3525 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3526 | byte_count = params + 1 /* pad */ ; | |
3527 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3528 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3529 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3530 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3531 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3532 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3533 | ||
3534 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3535 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3536 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3537 | if (rc) { |
f96637be | 3538 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3539 | } else { |
3540 | /* decode response */ | |
50c2f753 | 3541 | |
1da177e4 | 3542 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3543 | /* BB also check enough total bytes returned */ |
820a803f | 3544 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3545 | rc = -EIO; /* bad smb */ |
3546 | else { | |
3547 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3548 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3549 | rc = cifs_copy_posix_acl(acl_inf, | |
3550 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3551 | buflen, acl_type, count); |
1da177e4 LT |
3552 | } |
3553 | } | |
3554 | cifs_buf_release(pSMB); | |
3555 | if (rc == -EAGAIN) | |
3556 | goto queryAclRetry; | |
3557 | return rc; | |
3558 | } | |
3559 | ||
3560 | int | |
6d5786a3 | 3561 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3562 | const unsigned char *fileName, |
3563 | const char *local_acl, const int buflen, | |
3564 | const int acl_type, | |
3565 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3566 | { |
3567 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3568 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3569 | char *parm_data; | |
3570 | int name_len; | |
3571 | int rc = 0; | |
3572 | int bytes_returned = 0; | |
3573 | __u16 params, byte_count, data_count, param_offset, offset; | |
3574 | ||
f96637be | 3575 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3576 | setAclRetry: |
3577 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3578 | (void **) &pSMBr); |
1da177e4 LT |
3579 | if (rc) |
3580 | return rc; | |
3581 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3582 | name_len = | |
acbbb76a SF |
3583 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3584 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3585 | name_len++; /* trailing null */ |
3586 | name_len *= 2; | |
50c2f753 | 3587 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3588 | name_len = strnlen(fileName, PATH_MAX); |
3589 | name_len++; /* trailing null */ | |
3590 | strncpy(pSMB->FileName, fileName, name_len); | |
3591 | } | |
3592 | params = 6 + name_len; | |
3593 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3594 | /* BB find max SMB size from sess */ |
3595 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3596 | pSMB->MaxSetupCount = 0; |
3597 | pSMB->Reserved = 0; | |
3598 | pSMB->Flags = 0; | |
3599 | pSMB->Timeout = 0; | |
3600 | pSMB->Reserved2 = 0; | |
3601 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3602 | InformationLevel) - 4; |
1da177e4 LT |
3603 | offset = param_offset + params; |
3604 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3605 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3606 | ||
3607 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3608 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3609 | |
790fe579 | 3610 | if (data_count == 0) { |
1da177e4 LT |
3611 | rc = -EOPNOTSUPP; |
3612 | goto setACLerrorExit; | |
3613 | } | |
3614 | pSMB->DataOffset = cpu_to_le16(offset); | |
3615 | pSMB->SetupCount = 1; | |
3616 | pSMB->Reserved3 = 0; | |
3617 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3618 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3619 | byte_count = 3 /* pad */ + params + data_count; | |
3620 | pSMB->DataCount = cpu_to_le16(data_count); | |
3621 | pSMB->TotalDataCount = pSMB->DataCount; | |
3622 | pSMB->ParameterCount = cpu_to_le16(params); | |
3623 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3624 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3625 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3626 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3627 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3628 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3629 | if (rc) |
f96637be | 3630 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3631 | |
3632 | setACLerrorExit: | |
3633 | cifs_buf_release(pSMB); | |
3634 | if (rc == -EAGAIN) | |
3635 | goto setAclRetry; | |
3636 | return rc; | |
3637 | } | |
3638 | ||
f654bac2 SF |
3639 | /* BB fix tabs in this function FIXME BB */ |
3640 | int | |
6d5786a3 | 3641 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3642 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3643 | { |
50c2f753 SF |
3644 | int rc = 0; |
3645 | struct smb_t2_qfi_req *pSMB = NULL; | |
3646 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3647 | int bytes_returned; | |
3648 | __u16 params, byte_count; | |
f654bac2 | 3649 | |
f96637be | 3650 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3651 | if (tcon == NULL) |
3652 | return -ENODEV; | |
f654bac2 SF |
3653 | |
3654 | GetExtAttrRetry: | |
790fe579 SF |
3655 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3656 | (void **) &pSMBr); | |
3657 | if (rc) | |
3658 | return rc; | |
f654bac2 | 3659 | |
ad7a2926 | 3660 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3661 | pSMB->t2.TotalDataCount = 0; |
3662 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3663 | /* BB find exact max data count below from sess structure BB */ | |
3664 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3665 | pSMB->t2.MaxSetupCount = 0; | |
3666 | pSMB->t2.Reserved = 0; | |
3667 | pSMB->t2.Flags = 0; | |
3668 | pSMB->t2.Timeout = 0; | |
3669 | pSMB->t2.Reserved2 = 0; | |
3670 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3671 | Fid) - 4); | |
3672 | pSMB->t2.DataCount = 0; | |
3673 | pSMB->t2.DataOffset = 0; | |
3674 | pSMB->t2.SetupCount = 1; | |
3675 | pSMB->t2.Reserved3 = 0; | |
3676 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3677 | byte_count = params + 1 /* pad */ ; | |
3678 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3679 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3680 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3681 | pSMB->Pad = 0; | |
f654bac2 | 3682 | pSMB->Fid = netfid; |
be8e3b00 | 3683 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3684 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3685 | ||
3686 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3687 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3688 | if (rc) { | |
f96637be | 3689 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3690 | } else { |
3691 | /* decode response */ | |
3692 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3693 | /* BB also check enough total bytes returned */ |
820a803f | 3694 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3695 | /* If rc should we check for EOPNOSUPP and |
3696 | disable the srvino flag? or in caller? */ | |
3697 | rc = -EIO; /* bad smb */ | |
3698 | else { | |
3699 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3700 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3701 | struct file_chattr_info *pfinfo; | |
3702 | /* BB Do we need a cast or hash here ? */ | |
3703 | if (count != 16) { | |
f96637be | 3704 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3705 | rc = -EIO; |
3706 | goto GetExtAttrOut; | |
3707 | } | |
3708 | pfinfo = (struct file_chattr_info *) | |
3709 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3710 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3711 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3712 | } |
3713 | } | |
f654bac2 | 3714 | GetExtAttrOut: |
790fe579 SF |
3715 | cifs_buf_release(pSMB); |
3716 | if (rc == -EAGAIN) | |
3717 | goto GetExtAttrRetry; | |
3718 | return rc; | |
f654bac2 SF |
3719 | } |
3720 | ||
f654bac2 | 3721 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3722 | |
79df1bae JL |
3723 | #ifdef CONFIG_CIFS_ACL |
3724 | /* | |
3725 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3726 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3727 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3728 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3729 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3730 | * by caller | |
3731 | */ | |
3732 | static int | |
3733 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3734 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3735 | void **ret_buf) |
3736 | { | |
3737 | int rc; | |
3738 | __u32 temp_offset; | |
3739 | struct smb_com_ntransact_req *pSMB; | |
3740 | ||
3741 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3742 | (void **)&pSMB); | |
3743 | if (rc) | |
3744 | return rc; | |
3745 | *ret_buf = (void *)pSMB; | |
3746 | pSMB->Reserved = 0; | |
3747 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3748 | pSMB->TotalDataCount = 0; | |
c974befa | 3749 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3750 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3751 | pSMB->DataCount = pSMB->TotalDataCount; | |
3752 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3753 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3754 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3755 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3756 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3757 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3758 | return 0; | |
3759 | } | |
3760 | ||
3761 | static int | |
3762 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3763 | __u32 *pparmlen, __u32 *pdatalen) | |
3764 | { | |
3765 | char *end_of_smb; | |
3766 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3767 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3768 | u16 bcc; |
79df1bae JL |
3769 | |
3770 | *pdatalen = 0; | |
3771 | *pparmlen = 0; | |
3772 | ||
3773 | if (buf == NULL) | |
3774 | return -EINVAL; | |
3775 | ||
3776 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3777 | ||
820a803f JL |
3778 | bcc = get_bcc(&pSMBr->hdr); |
3779 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3780 | (char *)&pSMBr->ByteCount; |
3781 | ||
3782 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3783 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3784 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3785 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3786 | ||
3787 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3788 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3789 | ||
3790 | /* should we also check that parm and data areas do not overlap? */ | |
3791 | if (*ppparm > end_of_smb) { | |
f96637be | 3792 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3793 | return -EINVAL; |
3794 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3795 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3796 | return -EINVAL; |
3797 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3798 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3799 | return -EINVAL; |
3800 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3801 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3802 | *ppdata, data_count, (data_count + *ppdata), | |
3803 | end_of_smb, pSMBr); | |
79df1bae | 3804 | return -EINVAL; |
820a803f | 3805 | } else if (parm_count + data_count > bcc) { |
f96637be | 3806 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3807 | return -EINVAL; |
3808 | } | |
3809 | *pdatalen = data_count; | |
3810 | *pparmlen = parm_count; | |
3811 | return 0; | |
3812 | } | |
3813 | ||
0a4b92c0 SF |
3814 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3815 | int | |
6d5786a3 | 3816 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3817 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3818 | { |
3819 | int rc = 0; | |
3820 | int buf_type = 0; | |
ad7a2926 | 3821 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3822 | struct kvec iov[1]; |
3823 | ||
f96637be | 3824 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3825 | |
630f3f0c SF |
3826 | *pbuflen = 0; |
3827 | *acl_inf = NULL; | |
3828 | ||
b9c7a2bb | 3829 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3830 | 8 /* parm len */, tcon, (void **) &pSMB); |
3831 | if (rc) | |
3832 | return rc; | |
3833 | ||
3834 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3835 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3836 | pSMB->MaxSetupCount = 0; | |
3837 | pSMB->Fid = fid; /* file handle always le */ | |
3838 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3839 | CIFS_ACL_DACL); | |
3840 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3841 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3842 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3843 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3844 | |
a761ac57 | 3845 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3846 | 0); |
44c58186 | 3847 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3848 | if (rc) { |
f96637be | 3849 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3850 | } else { /* decode response */ |
ad7a2926 | 3851 | __le32 *parm; |
630f3f0c SF |
3852 | __u32 parm_len; |
3853 | __u32 acl_len; | |
50c2f753 | 3854 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3855 | char *pdata; |
0a4b92c0 SF |
3856 | |
3857 | /* validate_nttransact */ | |
50c2f753 | 3858 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3859 | &pdata, &parm_len, pbuflen); |
790fe579 | 3860 | if (rc) |
0a4b92c0 SF |
3861 | goto qsec_out; |
3862 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3863 | ||
f96637be JP |
3864 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3865 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3866 | |
3867 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3868 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3869 | *pbuflen = 0; |
0a4b92c0 SF |
3870 | goto qsec_out; |
3871 | } | |
3872 | ||
3873 | /* BB check that data area is minimum length and as big as acl_len */ | |
3874 | ||
af6f4612 | 3875 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3876 | if (acl_len != *pbuflen) { |
f96637be JP |
3877 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3878 | acl_len, *pbuflen); | |
630f3f0c SF |
3879 | if (*pbuflen > acl_len) |
3880 | *pbuflen = acl_len; | |
3881 | } | |
0a4b92c0 | 3882 | |
630f3f0c SF |
3883 | /* check if buffer is big enough for the acl |
3884 | header followed by the smallest SID */ | |
3885 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3886 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3887 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3888 | rc = -EINVAL; |
3889 | *pbuflen = 0; | |
3890 | } else { | |
f7f7c185 | 3891 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3892 | if (*acl_inf == NULL) { |
3893 | *pbuflen = 0; | |
3894 | rc = -ENOMEM; | |
3895 | } | |
630f3f0c | 3896 | } |
0a4b92c0 SF |
3897 | } |
3898 | qsec_out: | |
6d81ed1e | 3899 | free_rsp_buf(buf_type, iov[0].iov_base); |
4b8f930f | 3900 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3901 | return rc; |
3902 | } | |
97837582 SF |
3903 | |
3904 | int | |
6d5786a3 | 3905 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3906 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3907 | { |
3908 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3909 | int rc = 0; | |
3910 | int bytes_returned = 0; | |
3911 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3912 | void *pSMBr; |
97837582 SF |
3913 | |
3914 | setCifsAclRetry: | |
b2a3ad9c | 3915 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3916 | if (rc) |
b2a3ad9c | 3917 | return rc; |
97837582 SF |
3918 | |
3919 | pSMB->MaxSetupCount = 0; | |
3920 | pSMB->Reserved = 0; | |
3921 | ||
3922 | param_count = 8; | |
3923 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3924 | data_count = acllen; | |
3925 | data_offset = param_offset + param_count; | |
3926 | byte_count = 3 /* pad */ + param_count; | |
3927 | ||
3928 | pSMB->DataCount = cpu_to_le32(data_count); | |
3929 | pSMB->TotalDataCount = pSMB->DataCount; | |
3930 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3931 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3932 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3933 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3934 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3935 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3936 | pSMB->SetupCount = 0; | |
3937 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3938 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3939 | ||
3940 | pSMB->Fid = fid; /* file handle always le */ | |
3941 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3942 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3943 | |
3944 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3945 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3946 | data_offset, pntsd, acllen); | |
be8e3b00 | 3947 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3948 | } else |
be8e3b00 | 3949 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3950 | |
3951 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3952 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3953 | ||
f96637be JP |
3954 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3955 | bytes_returned, rc); | |
97837582 | 3956 | if (rc) |
f96637be | 3957 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3958 | cifs_buf_release(pSMB); |
3959 | ||
3960 | if (rc == -EAGAIN) | |
3961 | goto setCifsAclRetry; | |
3962 | ||
3963 | return (rc); | |
3964 | } | |
3965 | ||
79df1bae | 3966 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3967 | |
6b8edfe0 SF |
3968 | /* Legacy Query Path Information call for lookup to old servers such |
3969 | as Win9x/WinME */ | |
68889f26 PS |
3970 | int |
3971 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3972 | const char *search_name, FILE_ALL_INFO *data, | |
3973 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3974 | { |
ad7a2926 SF |
3975 | QUERY_INFORMATION_REQ *pSMB; |
3976 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3977 | int rc = 0; |
3978 | int bytes_returned; | |
3979 | int name_len; | |
3980 | ||
f96637be | 3981 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3982 | QInfRetry: |
3983 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3984 | (void **) &pSMBr); |
6b8edfe0 SF |
3985 | if (rc) |
3986 | return rc; | |
3987 | ||
3988 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3989 | name_len = | |
acbbb76a | 3990 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3991 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3992 | remap); |
6b8edfe0 SF |
3993 | name_len++; /* trailing null */ |
3994 | name_len *= 2; | |
50c2f753 | 3995 | } else { |
68889f26 | 3996 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3997 | name_len++; /* trailing null */ |
68889f26 | 3998 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3999 | } |
4000 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4001 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4002 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4003 | pSMB->ByteCount = cpu_to_le16(name_len); |
4004 | ||
4005 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4006 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4007 | if (rc) { |
f96637be | 4008 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4009 | } else if (data) { |
1bd5bbcb SF |
4010 | struct timespec ts; |
4011 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
4012 | |
4013 | /* decode response */ | |
1bd5bbcb | 4014 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4015 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4016 | ts.tv_nsec = 0; |
4017 | ts.tv_sec = time; | |
4018 | /* decode time fields */ | |
68889f26 PS |
4019 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4020 | data->LastWriteTime = data->ChangeTime; | |
4021 | data->LastAccessTime = 0; | |
4022 | data->AllocationSize = | |
70ca734a | 4023 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4024 | data->EndOfFile = data->AllocationSize; |
4025 | data->Attributes = | |
70ca734a | 4026 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4027 | } else |
4028 | rc = -EIO; /* bad buffer passed in */ | |
4029 | ||
4030 | cifs_buf_release(pSMB); | |
4031 | ||
4032 | if (rc == -EAGAIN) | |
4033 | goto QInfRetry; | |
4034 | ||
4035 | return rc; | |
4036 | } | |
4037 | ||
bcd5357f | 4038 | int |
6d5786a3 | 4039 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4040 | u16 netfid, FILE_ALL_INFO *pFindData) |
4041 | { | |
4042 | struct smb_t2_qfi_req *pSMB = NULL; | |
4043 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4044 | int rc = 0; | |
4045 | int bytes_returned; | |
4046 | __u16 params, byte_count; | |
4047 | ||
4048 | QFileInfoRetry: | |
4049 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4050 | (void **) &pSMBr); | |
4051 | if (rc) | |
4052 | return rc; | |
4053 | ||
4054 | params = 2 /* level */ + 2 /* fid */; | |
4055 | pSMB->t2.TotalDataCount = 0; | |
4056 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4057 | /* BB find exact max data count below from sess structure BB */ | |
4058 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4059 | pSMB->t2.MaxSetupCount = 0; | |
4060 | pSMB->t2.Reserved = 0; | |
4061 | pSMB->t2.Flags = 0; | |
4062 | pSMB->t2.Timeout = 0; | |
4063 | pSMB->t2.Reserved2 = 0; | |
4064 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4065 | Fid) - 4); | |
4066 | pSMB->t2.DataCount = 0; | |
4067 | pSMB->t2.DataOffset = 0; | |
4068 | pSMB->t2.SetupCount = 1; | |
4069 | pSMB->t2.Reserved3 = 0; | |
4070 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4071 | byte_count = params + 1 /* pad */ ; | |
4072 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4073 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4074 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4075 | pSMB->Pad = 0; | |
4076 | pSMB->Fid = netfid; | |
be8e3b00 | 4077 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4078 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4079 | |
bcd5357f JL |
4080 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4081 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4082 | if (rc) { | |
ebcc943c | 4083 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4084 | } else { /* decode response */ |
4085 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4086 | |
bcd5357f JL |
4087 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4088 | rc = -EIO; | |
820a803f | 4089 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4090 | rc = -EIO; /* bad smb */ |
4091 | else if (pFindData) { | |
4092 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4093 | memcpy((char *) pFindData, | |
4094 | (char *) &pSMBr->hdr.Protocol + | |
4095 | data_offset, sizeof(FILE_ALL_INFO)); | |
4096 | } else | |
4097 | rc = -ENOMEM; | |
4098 | } | |
4099 | cifs_buf_release(pSMB); | |
4100 | if (rc == -EAGAIN) | |
4101 | goto QFileInfoRetry; | |
6b8edfe0 | 4102 | |
bcd5357f JL |
4103 | return rc; |
4104 | } | |
6b8edfe0 | 4105 | |
1da177e4 | 4106 | int |
6d5786a3 | 4107 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4108 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4109 | int legacy /* old style infolevel */, |
737b758c | 4110 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4111 | { |
68889f26 | 4112 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4113 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4114 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4115 | int rc = 0; | |
4116 | int bytes_returned; | |
4117 | int name_len; | |
4118 | __u16 params, byte_count; | |
4119 | ||
f96637be | 4120 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4121 | QPathInfoRetry: |
4122 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4123 | (void **) &pSMBr); | |
4124 | if (rc) | |
4125 | return rc; | |
4126 | ||
4127 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4128 | name_len = | |
68889f26 | 4129 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4130 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4131 | name_len++; /* trailing null */ |
4132 | name_len *= 2; | |
50c2f753 | 4133 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4134 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4135 | name_len++; /* trailing null */ |
68889f26 | 4136 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4137 | } |
4138 | ||
50c2f753 | 4139 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4140 | pSMB->TotalDataCount = 0; |
4141 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4142 | /* BB find exact max SMB PDU from sess structure BB */ |
4143 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4144 | pSMB->MaxSetupCount = 0; |
4145 | pSMB->Reserved = 0; | |
4146 | pSMB->Flags = 0; | |
4147 | pSMB->Timeout = 0; | |
4148 | pSMB->Reserved2 = 0; | |
4149 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4150 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4151 | pSMB->DataCount = 0; |
4152 | pSMB->DataOffset = 0; | |
4153 | pSMB->SetupCount = 1; | |
4154 | pSMB->Reserved3 = 0; | |
4155 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4156 | byte_count = params + 1 /* pad */ ; | |
4157 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4158 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4159 | if (legacy) |
acf1a1b1 SF |
4160 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4161 | else | |
4162 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4163 | pSMB->Reserved4 = 0; |
be8e3b00 | 4164 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4165 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4166 | ||
4167 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4168 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4169 | if (rc) { | |
f96637be | 4170 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4171 | } else { /* decode response */ |
4172 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4173 | ||
acf1a1b1 SF |
4174 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4175 | rc = -EIO; | |
820a803f | 4176 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4177 | rc = -EIO; /* bad smb */ |
820a803f | 4178 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4179 | rc = -EIO; /* 24 or 26 expected but we do not read |
4180 | last field */ | |
68889f26 | 4181 | else if (data) { |
acf1a1b1 | 4182 | int size; |
1da177e4 | 4183 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4184 | |
68889f26 PS |
4185 | /* |
4186 | * On legacy responses we do not read the last field, | |
4187 | * EAsize, fortunately since it varies by subdialect and | |
4188 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4189 | * bytes depending but we don't care here. | |
4190 | */ | |
ad7a2926 | 4191 | if (legacy) |
acf1a1b1 SF |
4192 | size = sizeof(FILE_INFO_STANDARD); |
4193 | else | |
4194 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4195 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4196 | data_offset, size); |
1da177e4 LT |
4197 | } else |
4198 | rc = -ENOMEM; | |
4199 | } | |
4200 | cifs_buf_release(pSMB); | |
4201 | if (rc == -EAGAIN) | |
4202 | goto QPathInfoRetry; | |
4203 | ||
4204 | return rc; | |
4205 | } | |
4206 | ||
c8634fd3 | 4207 | int |
6d5786a3 | 4208 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4209 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4210 | { | |
4211 | struct smb_t2_qfi_req *pSMB = NULL; | |
4212 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4213 | int rc = 0; | |
4214 | int bytes_returned; | |
4215 | __u16 params, byte_count; | |
4216 | ||
4217 | UnixQFileInfoRetry: | |
4218 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4219 | (void **) &pSMBr); | |
4220 | if (rc) | |
4221 | return rc; | |
4222 | ||
4223 | params = 2 /* level */ + 2 /* fid */; | |
4224 | pSMB->t2.TotalDataCount = 0; | |
4225 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4226 | /* BB find exact max data count below from sess structure BB */ | |
4227 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4228 | pSMB->t2.MaxSetupCount = 0; | |
4229 | pSMB->t2.Reserved = 0; | |
4230 | pSMB->t2.Flags = 0; | |
4231 | pSMB->t2.Timeout = 0; | |
4232 | pSMB->t2.Reserved2 = 0; | |
4233 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4234 | Fid) - 4); | |
4235 | pSMB->t2.DataCount = 0; | |
4236 | pSMB->t2.DataOffset = 0; | |
4237 | pSMB->t2.SetupCount = 1; | |
4238 | pSMB->t2.Reserved3 = 0; | |
4239 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4240 | byte_count = params + 1 /* pad */ ; | |
4241 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4242 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4243 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4244 | pSMB->Pad = 0; | |
4245 | pSMB->Fid = netfid; | |
be8e3b00 | 4246 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4247 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4248 | |
4249 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4250 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4251 | if (rc) { | |
ebcc943c | 4252 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4253 | } else { /* decode response */ |
4254 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4255 | ||
820a803f | 4256 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4257 | 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 |
4258 | rc = -EIO; /* bad smb */ |
4259 | } else { | |
4260 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4261 | memcpy((char *) pFindData, | |
4262 | (char *) &pSMBr->hdr.Protocol + | |
4263 | data_offset, | |
4264 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4265 | } | |
4266 | } | |
4267 | ||
4268 | cifs_buf_release(pSMB); | |
4269 | if (rc == -EAGAIN) | |
4270 | goto UnixQFileInfoRetry; | |
4271 | ||
4272 | return rc; | |
4273 | } | |
4274 | ||
1da177e4 | 4275 | int |
6d5786a3 | 4276 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4277 | const unsigned char *searchName, |
582d21e5 | 4278 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4279 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4280 | { |
4281 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4282 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4283 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4284 | int rc = 0; | |
4285 | int bytes_returned = 0; | |
4286 | int name_len; | |
4287 | __u16 params, byte_count; | |
4288 | ||
f96637be | 4289 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4290 | UnixQPathInfoRetry: |
4291 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4292 | (void **) &pSMBr); | |
4293 | if (rc) | |
4294 | return rc; | |
4295 | ||
4296 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4297 | name_len = | |
acbbb76a SF |
4298 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4299 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4300 | name_len++; /* trailing null */ |
4301 | name_len *= 2; | |
50c2f753 | 4302 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4303 | name_len = strnlen(searchName, PATH_MAX); |
4304 | name_len++; /* trailing null */ | |
4305 | strncpy(pSMB->FileName, searchName, name_len); | |
4306 | } | |
4307 | ||
50c2f753 | 4308 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4309 | pSMB->TotalDataCount = 0; |
4310 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4311 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4312 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4313 | pSMB->MaxSetupCount = 0; |
4314 | pSMB->Reserved = 0; | |
4315 | pSMB->Flags = 0; | |
4316 | pSMB->Timeout = 0; | |
4317 | pSMB->Reserved2 = 0; | |
4318 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4319 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4320 | pSMB->DataCount = 0; |
4321 | pSMB->DataOffset = 0; | |
4322 | pSMB->SetupCount = 1; | |
4323 | pSMB->Reserved3 = 0; | |
4324 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4325 | byte_count = params + 1 /* pad */ ; | |
4326 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4327 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4328 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4329 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4330 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4331 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4332 | ||
4333 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4334 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4335 | if (rc) { | |
ebcc943c | 4336 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4337 | } else { /* decode response */ |
4338 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4339 | ||
820a803f | 4340 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4341 | 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 |
4342 | rc = -EIO; /* bad smb */ |
4343 | } else { | |
4344 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4345 | memcpy((char *) pFindData, | |
4346 | (char *) &pSMBr->hdr.Protocol + | |
4347 | data_offset, | |
630f3f0c | 4348 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4349 | } |
4350 | } | |
4351 | cifs_buf_release(pSMB); | |
4352 | if (rc == -EAGAIN) | |
4353 | goto UnixQPathInfoRetry; | |
4354 | ||
4355 | return rc; | |
4356 | } | |
4357 | ||
1da177e4 LT |
4358 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4359 | int | |
6d5786a3 | 4360 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4361 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4362 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4363 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4364 | { |
4365 | /* level 257 SMB_ */ | |
4366 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4367 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4368 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4369 | int rc = 0; |
4370 | int bytes_returned = 0; | |
c052e2b4 | 4371 | int name_len, remap; |
1da177e4 | 4372 | __u16 params, byte_count; |
c052e2b4 | 4373 | struct nls_table *nls_codepage; |
1da177e4 | 4374 | |
f96637be | 4375 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4376 | |
4377 | findFirstRetry: | |
4378 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4379 | (void **) &pSMBr); | |
4380 | if (rc) | |
4381 | return rc; | |
4382 | ||
c052e2b4 | 4383 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4384 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4385 | |
1da177e4 LT |
4386 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4387 | name_len = | |
acbbb76a SF |
4388 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4389 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4390 | /* We can not add the asterik earlier in case |
4391 | it got remapped to 0xF03A as if it were part of the | |
4392 | directory name instead of a wildcard */ | |
1da177e4 | 4393 | name_len *= 2; |
c052e2b4 SP |
4394 | if (msearch) { |
4395 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4396 | pSMB->FileName[name_len+1] = 0; | |
4397 | pSMB->FileName[name_len+2] = '*'; | |
4398 | pSMB->FileName[name_len+3] = 0; | |
4399 | name_len += 4; /* now the trailing null */ | |
4400 | /* null terminate just in case */ | |
4401 | pSMB->FileName[name_len] = 0; | |
4402 | pSMB->FileName[name_len+1] = 0; | |
4403 | name_len += 2; | |
4404 | } | |
1da177e4 LT |
4405 | } else { /* BB add check for overrun of SMB buf BB */ |
4406 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4407 | /* BB fix here and in unicode clause above ie |
790fe579 | 4408 | if (name_len > buffersize-header) |
1da177e4 LT |
4409 | free buffer exit; BB */ |
4410 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4411 | if (msearch) { |
4412 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4413 | pSMB->FileName[name_len+1] = '*'; | |
4414 | pSMB->FileName[name_len+2] = 0; | |
4415 | name_len += 3; | |
4416 | } | |
1da177e4 LT |
4417 | } |
4418 | ||
4419 | params = 12 + name_len /* includes null */ ; | |
4420 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4421 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4422 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4423 | pSMB->MaxSetupCount = 0; |
4424 | pSMB->Reserved = 0; | |
4425 | pSMB->Flags = 0; | |
4426 | pSMB->Timeout = 0; | |
4427 | pSMB->Reserved2 = 0; | |
4428 | byte_count = params + 1 /* pad */ ; | |
4429 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4430 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4431 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4432 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4433 | - 4); | |
1da177e4 LT |
4434 | pSMB->DataCount = 0; |
4435 | pSMB->DataOffset = 0; | |
4436 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4437 | pSMB->Reserved3 = 0; | |
4438 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4439 | pSMB->SearchAttributes = | |
4440 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4441 | ATTR_DIRECTORY); | |
50c2f753 | 4442 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4443 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4444 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4445 | ||
4446 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4447 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4448 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4449 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4450 | ||
4451 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4452 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4453 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4454 | |
88274815 SF |
4455 | if (rc) {/* BB add logic to retry regular search if Unix search |
4456 | rejected unexpectedly by server */ | |
1da177e4 | 4457 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4458 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4459 | |
88274815 | 4460 | cifs_buf_release(pSMB); |
1da177e4 LT |
4461 | |
4462 | /* BB eventually could optimize out free and realloc of buf */ | |
4463 | /* for this case */ | |
4464 | if (rc == -EAGAIN) | |
4465 | goto findFirstRetry; | |
4466 | } else { /* decode response */ | |
4467 | /* BB remember to free buffer if error BB */ | |
4468 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4469 | if (rc == 0) { |
b77d753c SF |
4470 | unsigned int lnoff; |
4471 | ||
1da177e4 | 4472 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4473 | psrch_inf->unicode = true; |
1da177e4 | 4474 | else |
4b18f2a9 | 4475 | psrch_inf->unicode = false; |
1da177e4 LT |
4476 | |
4477 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4478 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4479 | psrch_inf->srch_entries_start = |
4480 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4481 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4482 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4483 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4484 | ||
790fe579 | 4485 | if (parms->EndofSearch) |
4b18f2a9 | 4486 | psrch_inf->endOfSearch = true; |
1da177e4 | 4487 | else |
4b18f2a9 | 4488 | psrch_inf->endOfSearch = false; |
1da177e4 | 4489 | |
50c2f753 SF |
4490 | psrch_inf->entries_in_buffer = |
4491 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4492 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4493 | psrch_inf->entries_in_buffer; |
b77d753c | 4494 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4495 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4496 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4497 | psrch_inf->last_entry = NULL; |
4498 | return rc; | |
4499 | } | |
4500 | ||
0752f152 | 4501 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4502 | lnoff; |
4503 | ||
c052e2b4 SP |
4504 | if (pnetfid) |
4505 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4506 | } else { |
4507 | cifs_buf_release(pSMB); | |
4508 | } | |
4509 | } | |
4510 | ||
4511 | return rc; | |
4512 | } | |
4513 | ||
6d5786a3 PS |
4514 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4515 | __u16 searchHandle, __u16 search_flags, | |
4516 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4517 | { |
4518 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4519 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4520 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4521 | char *response_data; |
4522 | int rc = 0; | |
9438fabb JL |
4523 | int bytes_returned; |
4524 | unsigned int name_len; | |
1da177e4 LT |
4525 | __u16 params, byte_count; |
4526 | ||
f96637be | 4527 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4528 | |
4b18f2a9 | 4529 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4530 | return -ENOENT; |
4531 | ||
4532 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4533 | (void **) &pSMBr); | |
4534 | if (rc) | |
4535 | return rc; | |
4536 | ||
50c2f753 | 4537 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4538 | byte_count = 0; |
4539 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4540 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4541 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4542 | pSMB->MaxSetupCount = 0; |
4543 | pSMB->Reserved = 0; | |
4544 | pSMB->Flags = 0; | |
4545 | pSMB->Timeout = 0; | |
4546 | pSMB->Reserved2 = 0; | |
4547 | pSMB->ParameterOffset = cpu_to_le16( | |
4548 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4549 | pSMB->DataCount = 0; | |
4550 | pSMB->DataOffset = 0; | |
4551 | pSMB->SetupCount = 1; | |
4552 | pSMB->Reserved3 = 0; | |
4553 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4554 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4555 | pSMB->SearchCount = | |
630f3f0c | 4556 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4557 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4558 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4559 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4560 | |
4561 | name_len = psrch_inf->resume_name_len; | |
4562 | params += name_len; | |
790fe579 | 4563 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4564 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4565 | byte_count += name_len; | |
ef6724e3 SF |
4566 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4567 | pSMB->ResumeFileName[name_len] = 0; | |
4568 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4569 | } else { |
4570 | rc = -EINVAL; | |
4571 | goto FNext2_err_exit; | |
4572 | } | |
4573 | byte_count = params + 1 /* pad */ ; | |
4574 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4575 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4576 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4577 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4578 | |
1da177e4 LT |
4579 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4580 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4581 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4582 | if (rc) { |
4583 | if (rc == -EBADF) { | |
4b18f2a9 | 4584 | psrch_inf->endOfSearch = true; |
6353450a | 4585 | cifs_buf_release(pSMB); |
50c2f753 | 4586 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4587 | } else |
f96637be | 4588 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4589 | } else { /* decode response */ |
4590 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4591 | |
790fe579 | 4592 | if (rc == 0) { |
b77d753c SF |
4593 | unsigned int lnoff; |
4594 | ||
1da177e4 LT |
4595 | /* BB fixme add lock for file (srch_info) struct here */ |
4596 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4597 | psrch_inf->unicode = true; |
1da177e4 | 4598 | else |
4b18f2a9 | 4599 | psrch_inf->unicode = false; |
1da177e4 LT |
4600 | response_data = (char *) &pSMBr->hdr.Protocol + |
4601 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4602 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4603 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4604 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4605 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4606 | cifs_small_buf_release( |
4607 | psrch_inf->ntwrk_buf_start); | |
4608 | else | |
4609 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4610 | psrch_inf->srch_entries_start = response_data; |
4611 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4612 | psrch_inf->smallBuf = 0; |
790fe579 | 4613 | if (parms->EndofSearch) |
4b18f2a9 | 4614 | psrch_inf->endOfSearch = true; |
1da177e4 | 4615 | else |
4b18f2a9 | 4616 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4617 | psrch_inf->entries_in_buffer = |
4618 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4619 | psrch_inf->index_of_last_entry += |
4620 | psrch_inf->entries_in_buffer; | |
b77d753c | 4621 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4622 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4623 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4624 | psrch_inf->last_entry = NULL; |
4625 | return rc; | |
4626 | } else | |
4627 | psrch_inf->last_entry = | |
4628 | psrch_inf->srch_entries_start + lnoff; | |
4629 | ||
f96637be JP |
4630 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4631 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4632 | |
4633 | /* BB fixme add unlock here */ | |
4634 | } | |
4635 | ||
4636 | } | |
4637 | ||
4638 | /* BB On error, should we leave previous search buf (and count and | |
4639 | last entry fields) intact or free the previous one? */ | |
4640 | ||
4641 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4642 | since file handle passed in no longer valid */ | |
4643 | FNext2_err_exit: | |
4644 | if (rc != 0) | |
4645 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4646 | return rc; |
4647 | } | |
4648 | ||
4649 | int | |
6d5786a3 | 4650 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4651 | const __u16 searchHandle) |
1da177e4 LT |
4652 | { |
4653 | int rc = 0; | |
4654 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4655 | |
f96637be | 4656 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4657 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4658 | ||
4659 | /* no sense returning error if session restarted | |
4660 | as file handle has been closed */ | |
790fe579 | 4661 | if (rc == -EAGAIN) |
1da177e4 LT |
4662 | return 0; |
4663 | if (rc) | |
4664 | return rc; | |
4665 | ||
1da177e4 LT |
4666 | pSMB->FileID = searchHandle; |
4667 | pSMB->ByteCount = 0; | |
792af7b0 | 4668 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4669 | if (rc) |
f96637be | 4670 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4671 | |
44c58186 | 4672 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4673 | |
4674 | /* Since session is dead, search handle closed on server already */ | |
4675 | if (rc == -EAGAIN) | |
4676 | rc = 0; | |
4677 | ||
4678 | return rc; | |
4679 | } | |
4680 | ||
1da177e4 | 4681 | int |
6d5786a3 | 4682 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4683 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4684 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4685 | { |
4686 | int rc = 0; | |
4687 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4688 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4689 | int name_len, bytes_returned; | |
4690 | __u16 params, byte_count; | |
4691 | ||
f96637be | 4692 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4693 | if (tcon == NULL) |
50c2f753 | 4694 | return -ENODEV; |
1da177e4 LT |
4695 | |
4696 | GetInodeNumberRetry: | |
4697 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4698 | (void **) &pSMBr); |
1da177e4 LT |
4699 | if (rc) |
4700 | return rc; | |
4701 | ||
1da177e4 LT |
4702 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4703 | name_len = | |
acbbb76a | 4704 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4705 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4706 | remap); |
1da177e4 LT |
4707 | name_len++; /* trailing null */ |
4708 | name_len *= 2; | |
50c2f753 | 4709 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4710 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4711 | name_len++; /* trailing null */ |
1208ef1f | 4712 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4713 | } |
4714 | ||
4715 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4716 | pSMB->TotalDataCount = 0; | |
4717 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4718 | /* BB find exact max data count below from sess structure BB */ | |
4719 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4720 | pSMB->MaxSetupCount = 0; | |
4721 | pSMB->Reserved = 0; | |
4722 | pSMB->Flags = 0; | |
4723 | pSMB->Timeout = 0; | |
4724 | pSMB->Reserved2 = 0; | |
4725 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4726 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4727 | pSMB->DataCount = 0; |
4728 | pSMB->DataOffset = 0; | |
4729 | pSMB->SetupCount = 1; | |
4730 | pSMB->Reserved3 = 0; | |
4731 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4732 | byte_count = params + 1 /* pad */ ; | |
4733 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4734 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4735 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4736 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4737 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4738 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4739 | ||
4740 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4741 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4742 | if (rc) { | |
f96637be | 4743 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4744 | } else { |
4745 | /* decode response */ | |
4746 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4747 | /* BB also check enough total bytes returned */ |
820a803f | 4748 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4749 | /* If rc should we check for EOPNOSUPP and |
4750 | disable the srvino flag? or in caller? */ | |
4751 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4752 | else { |
1da177e4 LT |
4753 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4754 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4755 | struct file_internal_info *pfinfo; |
1da177e4 | 4756 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4757 | if (count < 8) { |
f96637be | 4758 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4759 | rc = -EIO; |
4760 | goto GetInodeNumOut; | |
4761 | } | |
4762 | pfinfo = (struct file_internal_info *) | |
4763 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4764 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4765 | } |
4766 | } | |
4767 | GetInodeNumOut: | |
4768 | cifs_buf_release(pSMB); | |
4769 | if (rc == -EAGAIN) | |
4770 | goto GetInodeNumberRetry; | |
4771 | return rc; | |
4772 | } | |
1da177e4 | 4773 | |
fec4585f IM |
4774 | /* parses DFS refferal V3 structure |
4775 | * caller is responsible for freeing target_nodes | |
4776 | * returns: | |
4777 | * on success - 0 | |
4778 | * on failure - errno | |
4779 | */ | |
4780 | static int | |
a1fe78f1 | 4781 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4782 | unsigned int *num_of_nodes, |
4783 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4784 | const struct nls_table *nls_codepage, int remap, |
4785 | const char *searchName) | |
fec4585f IM |
4786 | { |
4787 | int i, rc = 0; | |
4788 | char *data_end; | |
4789 | bool is_unicode; | |
4790 | struct dfs_referral_level_3 *ref; | |
4791 | ||
5ca33c6a HH |
4792 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4793 | is_unicode = true; | |
4794 | else | |
4795 | is_unicode = false; | |
fec4585f IM |
4796 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4797 | ||
4798 | if (*num_of_nodes < 1) { | |
f96637be JP |
4799 | cifs_dbg(VFS, "num_referrals: must be at least > 0, but we get num_referrals = %d\n", |
4800 | *num_of_nodes); | |
fec4585f | 4801 | rc = -EINVAL; |
a1fe78f1 | 4802 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4803 | } |
4804 | ||
4805 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4806 | if (ref->VersionNumber != cpu_to_le16(3)) { |
f96637be JP |
4807 | cifs_dbg(VFS, "Referrals of V%d version are not supported, should be V3\n", |
4808 | le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4809 | rc = -EINVAL; |
a1fe78f1 | 4810 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4811 | } |
4812 | ||
4813 | /* get the upper boundary of the resp buffer */ | |
4814 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4815 | le16_to_cpu(pSMBr->t2.DataCount); | |
4816 | ||
f96637be JP |
4817 | cifs_dbg(FYI, "num_referrals: %d dfs flags: 0x%x ...\n", |
4818 | *num_of_nodes, le32_to_cpu(pSMBr->DFSFlags)); | |
fec4585f | 4819 | |
f96637be JP |
4820 | *target_nodes = kcalloc(*num_of_nodes, sizeof(struct dfs_info3_param), |
4821 | GFP_KERNEL); | |
fec4585f | 4822 | if (*target_nodes == NULL) { |
fec4585f | 4823 | rc = -ENOMEM; |
a1fe78f1 | 4824 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4825 | } |
4826 | ||
3ad2f3fb | 4827 | /* collect necessary data from referrals */ |
fec4585f IM |
4828 | for (i = 0; i < *num_of_nodes; i++) { |
4829 | char *temp; | |
4830 | int max_len; | |
4831 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4832 | ||
0e0d2cf3 | 4833 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4834 | if (is_unicode) { |
331c3135 JL |
4835 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4836 | GFP_KERNEL); | |
2920ee2b SF |
4837 | if (tmp == NULL) { |
4838 | rc = -ENOMEM; | |
4839 | goto parse_DFS_referrals_exit; | |
4840 | } | |
acbbb76a SF |
4841 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4842 | PATH_MAX, nls_codepage, remap); | |
4843 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4844 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4845 | nls_codepage); |
4846 | kfree(tmp); | |
4847 | } else | |
4848 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4849 | ||
fec4585f IM |
4850 | node->server_type = le16_to_cpu(ref->ServerType); |
4851 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4852 | ||
4853 | /* copy DfsPath */ | |
4854 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4855 | max_len = data_end - temp; | |
acbbb76a SF |
4856 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4857 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4858 | if (!node->path_name) { |
4859 | rc = -ENOMEM; | |
a1fe78f1 | 4860 | goto parse_DFS_referrals_exit; |
066ce689 | 4861 | } |
fec4585f IM |
4862 | |
4863 | /* copy link target UNC */ | |
4864 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4865 | max_len = data_end - temp; | |
acbbb76a SF |
4866 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4867 | is_unicode, nls_codepage); | |
d8f2799b | 4868 | if (!node->node_name) { |
d8e2f53a | 4869 | rc = -ENOMEM; |
d8f2799b SM |
4870 | goto parse_DFS_referrals_exit; |
4871 | } | |
4872 | ||
4873 | ref++; | |
fec4585f IM |
4874 | } |
4875 | ||
a1fe78f1 | 4876 | parse_DFS_referrals_exit: |
fec4585f IM |
4877 | if (rc) { |
4878 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4879 | *target_nodes = NULL; | |
4880 | *num_of_nodes = 0; | |
4881 | } | |
4882 | return rc; | |
4883 | } | |
4884 | ||
1da177e4 | 4885 | int |
6d5786a3 | 4886 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4887 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4888 | unsigned int *num_of_nodes, |
737b758c | 4889 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4890 | { |
4891 | /* TRANS2_GET_DFS_REFERRAL */ | |
4892 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4893 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4894 | int rc = 0; |
4895 | int bytes_returned; | |
4896 | int name_len; | |
1da177e4 | 4897 | __u16 params, byte_count; |
c2cf07d5 SF |
4898 | *num_of_nodes = 0; |
4899 | *target_nodes = NULL; | |
1da177e4 | 4900 | |
f96637be | 4901 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4902 | if (ses == NULL) |
4903 | return -ENODEV; | |
4904 | getDFSRetry: | |
4905 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4906 | (void **) &pSMBr); | |
4907 | if (rc) | |
4908 | return rc; | |
50c2f753 SF |
4909 | |
4910 | /* server pointer checked in called function, | |
1982c344 | 4911 | but should never be null here anyway */ |
88257360 | 4912 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4913 | pSMB->hdr.Tid = ses->ipc_tid; |
4914 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4915 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4916 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4917 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4918 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4919 | |
4920 | if (ses->capabilities & CAP_UNICODE) { | |
4921 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4922 | name_len = | |
acbbb76a | 4923 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4924 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4925 | remap); |
1da177e4 LT |
4926 | name_len++; /* trailing null */ |
4927 | name_len *= 2; | |
50c2f753 | 4928 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4929 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4930 | name_len++; /* trailing null */ |
b669f33c | 4931 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4932 | } |
4933 | ||
65c3b205 | 4934 | if (ses->server->sign) |
38d77c50 | 4935 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4936 | |
50c2f753 | 4937 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4938 | |
1da177e4 LT |
4939 | params = 2 /* level */ + name_len /*includes null */ ; |
4940 | pSMB->TotalDataCount = 0; | |
4941 | pSMB->DataCount = 0; | |
4942 | pSMB->DataOffset = 0; | |
4943 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4944 | /* BB find exact max SMB PDU from sess structure BB */ |
4945 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4946 | pSMB->MaxSetupCount = 0; |
4947 | pSMB->Reserved = 0; | |
4948 | pSMB->Flags = 0; | |
4949 | pSMB->Timeout = 0; | |
4950 | pSMB->Reserved2 = 0; | |
4951 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4952 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4953 | pSMB->SetupCount = 1; |
4954 | pSMB->Reserved3 = 0; | |
4955 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4956 | byte_count = params + 3 /* pad */ ; | |
4957 | pSMB->ParameterCount = cpu_to_le16(params); | |
4958 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4959 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4960 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4961 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4962 | ||
4963 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4964 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4965 | if (rc) { | |
f96637be | 4966 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4967 | goto GetDFSRefExit; |
4968 | } | |
4969 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4970 | |
c2cf07d5 | 4971 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4972 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4973 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4974 | goto GetDFSRefExit; |
4975 | } | |
c2cf07d5 | 4976 | |
f96637be JP |
4977 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4978 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4979 | |
fec4585f | 4980 | /* parse returned result into more usable form */ |
a1fe78f1 | 4981 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4982 | target_nodes, nls_codepage, remap, |
b669f33c | 4983 | search_name); |
c2cf07d5 | 4984 | |
1da177e4 | 4985 | GetDFSRefExit: |
0d817bc0 | 4986 | cifs_buf_release(pSMB); |
1da177e4 LT |
4987 | |
4988 | if (rc == -EAGAIN) | |
4989 | goto getDFSRetry; | |
4990 | ||
4991 | return rc; | |
4992 | } | |
4993 | ||
20962438 SF |
4994 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4995 | int | |
6d5786a3 PS |
4996 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4997 | struct kstatfs *FSData) | |
20962438 SF |
4998 | { |
4999 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5000 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5001 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5002 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
5003 | int rc = 0; | |
5004 | int bytes_returned = 0; | |
5005 | __u16 params, byte_count; | |
5006 | ||
f96637be | 5007 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
5008 | oldQFSInfoRetry: |
5009 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5010 | (void **) &pSMBr); | |
5011 | if (rc) | |
5012 | return rc; | |
20962438 SF |
5013 | |
5014 | params = 2; /* level */ | |
5015 | pSMB->TotalDataCount = 0; | |
5016 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5017 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5018 | pSMB->MaxSetupCount = 0; | |
5019 | pSMB->Reserved = 0; | |
5020 | pSMB->Flags = 0; | |
5021 | pSMB->Timeout = 0; | |
5022 | pSMB->Reserved2 = 0; | |
5023 | byte_count = params + 1 /* pad */ ; | |
5024 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5025 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5026 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
5027 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
5028 | pSMB->DataCount = 0; | |
5029 | pSMB->DataOffset = 0; | |
5030 | pSMB->SetupCount = 1; | |
5031 | pSMB->Reserved3 = 0; | |
5032 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5033 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 5034 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
5035 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5036 | ||
5037 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5038 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5039 | if (rc) { | |
f96637be | 5040 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
5041 | } else { /* decode response */ |
5042 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5043 | ||
820a803f | 5044 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
5045 | rc = -EIO; /* bad smb */ |
5046 | else { | |
5047 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 5048 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 5049 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 5050 | |
50c2f753 | 5051 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
5052 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
5053 | FSData->f_bsize = | |
5054 | le16_to_cpu(response_data->BytesPerSector) * | |
5055 | le32_to_cpu(response_data-> | |
5056 | SectorsPerAllocationUnit); | |
5057 | FSData->f_blocks = | |
50c2f753 | 5058 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
5059 | FSData->f_bfree = FSData->f_bavail = |
5060 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5061 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5062 | (unsigned long long)FSData->f_blocks, | |
5063 | (unsigned long long)FSData->f_bfree, | |
5064 | FSData->f_bsize); | |
20962438 SF |
5065 | } |
5066 | } | |
5067 | cifs_buf_release(pSMB); | |
5068 | ||
5069 | if (rc == -EAGAIN) | |
5070 | goto oldQFSInfoRetry; | |
5071 | ||
5072 | return rc; | |
5073 | } | |
5074 | ||
1da177e4 | 5075 | int |
6d5786a3 PS |
5076 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5077 | struct kstatfs *FSData) | |
1da177e4 LT |
5078 | { |
5079 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5080 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5081 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5082 | FILE_SYSTEM_INFO *response_data; | |
5083 | int rc = 0; | |
5084 | int bytes_returned = 0; | |
5085 | __u16 params, byte_count; | |
5086 | ||
f96637be | 5087 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5088 | QFSInfoRetry: |
5089 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5090 | (void **) &pSMBr); | |
5091 | if (rc) | |
5092 | return rc; | |
5093 | ||
5094 | params = 2; /* level */ | |
5095 | pSMB->TotalDataCount = 0; | |
5096 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5097 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5098 | pSMB->MaxSetupCount = 0; |
5099 | pSMB->Reserved = 0; | |
5100 | pSMB->Flags = 0; | |
5101 | pSMB->Timeout = 0; | |
5102 | pSMB->Reserved2 = 0; | |
5103 | byte_count = params + 1 /* pad */ ; | |
5104 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5105 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5106 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5107 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5108 | pSMB->DataCount = 0; |
5109 | pSMB->DataOffset = 0; | |
5110 | pSMB->SetupCount = 1; | |
5111 | pSMB->Reserved3 = 0; | |
5112 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5113 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5114 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5115 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5116 | ||
5117 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5118 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5119 | if (rc) { | |
f96637be | 5120 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5121 | } else { /* decode response */ |
50c2f753 | 5122 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5123 | |
820a803f | 5124 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5125 | rc = -EIO; /* bad smb */ |
5126 | else { | |
5127 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5128 | |
5129 | response_data = | |
5130 | (FILE_SYSTEM_INFO | |
5131 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5132 | data_offset); | |
5133 | FSData->f_bsize = | |
5134 | le32_to_cpu(response_data->BytesPerSector) * | |
5135 | le32_to_cpu(response_data-> | |
5136 | SectorsPerAllocationUnit); | |
5137 | FSData->f_blocks = | |
5138 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5139 | FSData->f_bfree = FSData->f_bavail = | |
5140 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5141 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5142 | (unsigned long long)FSData->f_blocks, | |
5143 | (unsigned long long)FSData->f_bfree, | |
5144 | FSData->f_bsize); | |
1da177e4 LT |
5145 | } |
5146 | } | |
5147 | cifs_buf_release(pSMB); | |
5148 | ||
5149 | if (rc == -EAGAIN) | |
5150 | goto QFSInfoRetry; | |
5151 | ||
5152 | return rc; | |
5153 | } | |
5154 | ||
5155 | int | |
6d5786a3 | 5156 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5157 | { |
5158 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5159 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5160 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5161 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5162 | int rc = 0; | |
5163 | int bytes_returned = 0; | |
5164 | __u16 params, byte_count; | |
5165 | ||
f96637be | 5166 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5167 | QFSAttributeRetry: |
5168 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5169 | (void **) &pSMBr); | |
5170 | if (rc) | |
5171 | return rc; | |
5172 | ||
5173 | params = 2; /* level */ | |
5174 | pSMB->TotalDataCount = 0; | |
5175 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5176 | /* BB find exact max SMB PDU from sess structure BB */ |
5177 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5178 | pSMB->MaxSetupCount = 0; |
5179 | pSMB->Reserved = 0; | |
5180 | pSMB->Flags = 0; | |
5181 | pSMB->Timeout = 0; | |
5182 | pSMB->Reserved2 = 0; | |
5183 | byte_count = params + 1 /* pad */ ; | |
5184 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5185 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5186 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5187 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5188 | pSMB->DataCount = 0; |
5189 | pSMB->DataOffset = 0; | |
5190 | pSMB->SetupCount = 1; | |
5191 | pSMB->Reserved3 = 0; | |
5192 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5193 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5194 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5195 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5196 | ||
5197 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5198 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5199 | if (rc) { | |
f96637be | 5200 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5201 | } else { /* decode response */ |
5202 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5203 | ||
820a803f | 5204 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5205 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5206 | rc = -EIO; /* bad smb */ |
5207 | } else { | |
5208 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5209 | response_data = | |
5210 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5211 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5212 | data_offset); | |
5213 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5214 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5215 | } |
5216 | } | |
5217 | cifs_buf_release(pSMB); | |
5218 | ||
5219 | if (rc == -EAGAIN) | |
5220 | goto QFSAttributeRetry; | |
5221 | ||
5222 | return rc; | |
5223 | } | |
5224 | ||
5225 | int | |
6d5786a3 | 5226 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5227 | { |
5228 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5229 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5230 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5231 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5232 | int rc = 0; | |
5233 | int bytes_returned = 0; | |
5234 | __u16 params, byte_count; | |
5235 | ||
f96637be | 5236 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5237 | QFSDeviceRetry: |
5238 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5239 | (void **) &pSMBr); | |
5240 | if (rc) | |
5241 | return rc; | |
5242 | ||
5243 | params = 2; /* level */ | |
5244 | pSMB->TotalDataCount = 0; | |
5245 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5246 | /* BB find exact max SMB PDU from sess structure BB */ |
5247 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5248 | pSMB->MaxSetupCount = 0; |
5249 | pSMB->Reserved = 0; | |
5250 | pSMB->Flags = 0; | |
5251 | pSMB->Timeout = 0; | |
5252 | pSMB->Reserved2 = 0; | |
5253 | byte_count = params + 1 /* pad */ ; | |
5254 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5255 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5256 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5257 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5258 | |
5259 | pSMB->DataCount = 0; | |
5260 | pSMB->DataOffset = 0; | |
5261 | pSMB->SetupCount = 1; | |
5262 | pSMB->Reserved3 = 0; | |
5263 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5264 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5265 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5266 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5267 | ||
5268 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5269 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5270 | if (rc) { | |
f96637be | 5271 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5272 | } else { /* decode response */ |
5273 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5274 | ||
820a803f JL |
5275 | if (rc || get_bcc(&pSMBr->hdr) < |
5276 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5277 | rc = -EIO; /* bad smb */ |
5278 | else { | |
5279 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5280 | response_data = | |
737b758c SF |
5281 | (FILE_SYSTEM_DEVICE_INFO *) |
5282 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5283 | data_offset); |
5284 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5285 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5286 | } |
5287 | } | |
5288 | cifs_buf_release(pSMB); | |
5289 | ||
5290 | if (rc == -EAGAIN) | |
5291 | goto QFSDeviceRetry; | |
5292 | ||
5293 | return rc; | |
5294 | } | |
5295 | ||
5296 | int | |
6d5786a3 | 5297 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5298 | { |
5299 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5300 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5301 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5302 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5303 | int rc = 0; | |
5304 | int bytes_returned = 0; | |
5305 | __u16 params, byte_count; | |
5306 | ||
f96637be | 5307 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5308 | QFSUnixRetry: |
f569599a JL |
5309 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5310 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5311 | if (rc) |
5312 | return rc; | |
5313 | ||
5314 | params = 2; /* level */ | |
5315 | pSMB->TotalDataCount = 0; | |
5316 | pSMB->DataCount = 0; | |
5317 | pSMB->DataOffset = 0; | |
5318 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5319 | /* BB find exact max SMB PDU from sess structure BB */ |
5320 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5321 | pSMB->MaxSetupCount = 0; |
5322 | pSMB->Reserved = 0; | |
5323 | pSMB->Flags = 0; | |
5324 | pSMB->Timeout = 0; | |
5325 | pSMB->Reserved2 = 0; | |
5326 | byte_count = params + 1 /* pad */ ; | |
5327 | pSMB->ParameterCount = cpu_to_le16(params); | |
5328 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5329 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5330 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5331 | pSMB->SetupCount = 1; |
5332 | pSMB->Reserved3 = 0; | |
5333 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5334 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5335 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5336 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5337 | ||
5338 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5339 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5340 | if (rc) { | |
f96637be | 5341 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5342 | } else { /* decode response */ |
5343 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5344 | ||
820a803f | 5345 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5346 | rc = -EIO; /* bad smb */ |
5347 | } else { | |
5348 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5349 | response_data = | |
5350 | (FILE_SYSTEM_UNIX_INFO | |
5351 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5352 | data_offset); | |
5353 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5354 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5355 | } |
5356 | } | |
5357 | cifs_buf_release(pSMB); | |
5358 | ||
5359 | if (rc == -EAGAIN) | |
5360 | goto QFSUnixRetry; | |
5361 | ||
5362 | ||
5363 | return rc; | |
5364 | } | |
5365 | ||
ac67055e | 5366 | int |
6d5786a3 | 5367 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5368 | { |
5369 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5370 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5371 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5372 | int rc = 0; | |
5373 | int bytes_returned = 0; | |
5374 | __u16 params, param_offset, offset, byte_count; | |
5375 | ||
f96637be | 5376 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5377 | SETFSUnixRetry: |
f26282c9 | 5378 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5379 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5380 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5381 | if (rc) |
5382 | return rc; | |
5383 | ||
5384 | params = 4; /* 2 bytes zero followed by info level. */ | |
5385 | pSMB->MaxSetupCount = 0; | |
5386 | pSMB->Reserved = 0; | |
5387 | pSMB->Flags = 0; | |
5388 | pSMB->Timeout = 0; | |
5389 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5390 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5391 | - 4; | |
ac67055e JA |
5392 | offset = param_offset + params; |
5393 | ||
5394 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5395 | /* BB find exact max SMB PDU from sess structure BB */ |
5396 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5397 | pSMB->SetupCount = 1; |
5398 | pSMB->Reserved3 = 0; | |
5399 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5400 | byte_count = 1 /* pad */ + params + 12; | |
5401 | ||
5402 | pSMB->DataCount = cpu_to_le16(12); | |
5403 | pSMB->ParameterCount = cpu_to_le16(params); | |
5404 | pSMB->TotalDataCount = pSMB->DataCount; | |
5405 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5406 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5407 | pSMB->DataOffset = cpu_to_le16(offset); | |
5408 | ||
5409 | /* Params. */ | |
5410 | pSMB->FileNum = 0; | |
5411 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5412 | ||
5413 | /* Data. */ | |
5414 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5415 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5416 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5417 | ||
be8e3b00 | 5418 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5419 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5420 | ||
5421 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5422 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5423 | if (rc) { | |
f96637be | 5424 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5425 | } else { /* decode response */ |
5426 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5427 | if (rc) |
ac67055e | 5428 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5429 | } |
5430 | cifs_buf_release(pSMB); | |
5431 | ||
5432 | if (rc == -EAGAIN) | |
5433 | goto SETFSUnixRetry; | |
5434 | ||
5435 | return rc; | |
5436 | } | |
5437 | ||
5438 | ||
1da177e4 LT |
5439 | |
5440 | int | |
6d5786a3 | 5441 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5442 | struct kstatfs *FSData) |
1da177e4 LT |
5443 | { |
5444 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5445 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5446 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5447 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5448 | int rc = 0; | |
5449 | int bytes_returned = 0; | |
5450 | __u16 params, byte_count; | |
5451 | ||
f96637be | 5452 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5453 | QFSPosixRetry: |
5454 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5455 | (void **) &pSMBr); | |
5456 | if (rc) | |
5457 | return rc; | |
5458 | ||
5459 | params = 2; /* level */ | |
5460 | pSMB->TotalDataCount = 0; | |
5461 | pSMB->DataCount = 0; | |
5462 | pSMB->DataOffset = 0; | |
5463 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5464 | /* BB find exact max SMB PDU from sess structure BB */ |
5465 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5466 | pSMB->MaxSetupCount = 0; |
5467 | pSMB->Reserved = 0; | |
5468 | pSMB->Flags = 0; | |
5469 | pSMB->Timeout = 0; | |
5470 | pSMB->Reserved2 = 0; | |
5471 | byte_count = params + 1 /* pad */ ; | |
5472 | pSMB->ParameterCount = cpu_to_le16(params); | |
5473 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5474 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5475 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5476 | pSMB->SetupCount = 1; |
5477 | pSMB->Reserved3 = 0; | |
5478 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5479 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5480 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5481 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5482 | ||
5483 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5484 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5485 | if (rc) { | |
f96637be | 5486 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5487 | } else { /* decode response */ |
5488 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5489 | ||
820a803f | 5490 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5491 | rc = -EIO; /* bad smb */ |
5492 | } else { | |
5493 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5494 | response_data = | |
5495 | (FILE_SYSTEM_POSIX_INFO | |
5496 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5497 | data_offset); | |
5498 | FSData->f_bsize = | |
5499 | le32_to_cpu(response_data->BlockSize); | |
5500 | FSData->f_blocks = | |
5501 | le64_to_cpu(response_data->TotalBlocks); | |
5502 | FSData->f_bfree = | |
5503 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5504 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5505 | FSData->f_bavail = FSData->f_bfree; |
5506 | } else { | |
5507 | FSData->f_bavail = | |
50c2f753 | 5508 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5509 | } |
790fe579 | 5510 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5511 | FSData->f_files = |
50c2f753 | 5512 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5513 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5514 | FSData->f_ffree = |
50c2f753 | 5515 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5516 | } |
5517 | } | |
5518 | cifs_buf_release(pSMB); | |
5519 | ||
5520 | if (rc == -EAGAIN) | |
5521 | goto QFSPosixRetry; | |
5522 | ||
5523 | return rc; | |
5524 | } | |
5525 | ||
5526 | ||
d1433418 PS |
5527 | /* |
5528 | * We can not use write of zero bytes trick to set file size due to need for | |
5529 | * large file support. Also note that this SetPathInfo is preferred to | |
5530 | * SetFileInfo based method in next routine which is only needed to work around | |
5531 | * a sharing violation bugin Samba which this routine can run into. | |
5532 | */ | |
1da177e4 | 5533 | int |
6d5786a3 | 5534 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5535 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5536 | bool set_allocation) | |
1da177e4 LT |
5537 | { |
5538 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5539 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5540 | struct file_end_of_file_info *parm_data; | |
5541 | int name_len; | |
5542 | int rc = 0; | |
5543 | int bytes_returned = 0; | |
2baa2682 | 5544 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5545 | |
1da177e4 LT |
5546 | __u16 params, byte_count, data_count, param_offset, offset; |
5547 | ||
f96637be | 5548 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5549 | SetEOFRetry: |
5550 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5551 | (void **) &pSMBr); | |
5552 | if (rc) | |
5553 | return rc; | |
5554 | ||
5555 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5556 | name_len = | |
d1433418 PS |
5557 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5558 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5559 | name_len++; /* trailing null */ |
5560 | name_len *= 2; | |
3e87d803 | 5561 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5562 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5563 | name_len++; /* trailing null */ |
d1433418 | 5564 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5565 | } |
5566 | params = 6 + name_len; | |
26f57364 | 5567 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5568 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5569 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5570 | pSMB->MaxSetupCount = 0; |
5571 | pSMB->Reserved = 0; | |
5572 | pSMB->Flags = 0; | |
5573 | pSMB->Timeout = 0; | |
5574 | pSMB->Reserved2 = 0; | |
5575 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5576 | InformationLevel) - 4; |
1da177e4 | 5577 | offset = param_offset + params; |
d1433418 | 5578 | if (set_allocation) { |
50c2f753 SF |
5579 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5580 | pSMB->InformationLevel = | |
5581 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5582 | else | |
5583 | pSMB->InformationLevel = | |
5584 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5585 | } else /* Set File Size */ { | |
1da177e4 LT |
5586 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5587 | pSMB->InformationLevel = | |
50c2f753 | 5588 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5589 | else |
5590 | pSMB->InformationLevel = | |
50c2f753 | 5591 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5592 | } |
5593 | ||
5594 | parm_data = | |
5595 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5596 | offset); | |
5597 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5598 | pSMB->DataOffset = cpu_to_le16(offset); | |
5599 | pSMB->SetupCount = 1; | |
5600 | pSMB->Reserved3 = 0; | |
5601 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5602 | byte_count = 3 /* pad */ + params + data_count; | |
5603 | pSMB->DataCount = cpu_to_le16(data_count); | |
5604 | pSMB->TotalDataCount = pSMB->DataCount; | |
5605 | pSMB->ParameterCount = cpu_to_le16(params); | |
5606 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5607 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5608 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5609 | parm_data->FileSize = cpu_to_le64(size); |
5610 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5611 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5612 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5613 | if (rc) |
f96637be | 5614 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5615 | |
5616 | cifs_buf_release(pSMB); | |
5617 | ||
5618 | if (rc == -EAGAIN) | |
5619 | goto SetEOFRetry; | |
5620 | ||
5621 | return rc; | |
5622 | } | |
5623 | ||
5624 | int | |
d1433418 PS |
5625 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5626 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5627 | { |
5628 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5629 | struct file_end_of_file_info *parm_data; |
5630 | int rc = 0; | |
1da177e4 LT |
5631 | __u16 params, param_offset, offset, byte_count, count; |
5632 | ||
f96637be JP |
5633 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5634 | (long long)size); | |
cd63499c SF |
5635 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5636 | ||
1da177e4 LT |
5637 | if (rc) |
5638 | return rc; | |
5639 | ||
d1433418 PS |
5640 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5641 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5642 | |
1da177e4 LT |
5643 | params = 6; |
5644 | pSMB->MaxSetupCount = 0; | |
5645 | pSMB->Reserved = 0; | |
5646 | pSMB->Flags = 0; | |
5647 | pSMB->Timeout = 0; | |
5648 | pSMB->Reserved2 = 0; | |
5649 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5650 | offset = param_offset + params; | |
5651 | ||
1da177e4 LT |
5652 | count = sizeof(struct file_end_of_file_info); |
5653 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5654 | /* BB find exact max SMB PDU from sess structure BB */ |
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 | parm_data = | |
50c2f753 SF |
5666 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5667 | + offset); | |
1da177e4 LT |
5668 | pSMB->DataOffset = cpu_to_le16(offset); |
5669 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5670 | pSMB->Fid = cfile->fid.netfid; |
5671 | if (set_allocation) { | |
1da177e4 LT |
5672 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5673 | pSMB->InformationLevel = | |
5674 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5675 | else | |
5676 | pSMB->InformationLevel = | |
5677 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5678 | } else /* Set File Size */ { |
1da177e4 LT |
5679 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5680 | pSMB->InformationLevel = | |
50c2f753 | 5681 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5682 | else |
5683 | pSMB->InformationLevel = | |
50c2f753 | 5684 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5685 | } |
5686 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5687 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5688 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5689 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5690 | if (rc) { |
f96637be JP |
5691 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5692 | rc); | |
1da177e4 LT |
5693 | } |
5694 | ||
50c2f753 | 5695 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5696 | since file handle passed in no longer valid */ |
5697 | ||
5698 | return rc; | |
5699 | } | |
5700 | ||
50c2f753 | 5701 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5702 | an open handle, rather than by pathname - this is awkward due to |
5703 | potential access conflicts on the open, but it is unavoidable for these | |
5704 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5705 | time and resort to the original setpathinfo level which takes the ancient | |
5706 | DOS time format with 2 second granularity */ | |
5707 | int | |
6d5786a3 | 5708 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5709 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5710 | { |
5711 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5712 | char *data_offset; |
5713 | int rc = 0; | |
1da177e4 LT |
5714 | __u16 params, param_offset, offset, byte_count, count; |
5715 | ||
f96637be | 5716 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5717 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5718 | ||
1da177e4 LT |
5719 | if (rc) |
5720 | return rc; | |
5721 | ||
2dd2dfa0 JL |
5722 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5723 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5724 | |
1da177e4 LT |
5725 | params = 6; |
5726 | pSMB->MaxSetupCount = 0; | |
5727 | pSMB->Reserved = 0; | |
5728 | pSMB->Flags = 0; | |
5729 | pSMB->Timeout = 0; | |
5730 | pSMB->Reserved2 = 0; | |
5731 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5732 | offset = param_offset + params; | |
5733 | ||
b2a3ad9c JL |
5734 | data_offset = (char *)pSMB + |
5735 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5736 | |
26f57364 | 5737 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5738 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5739 | /* BB find max SMB PDU from sess */ |
5740 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5741 | pSMB->SetupCount = 1; |
5742 | pSMB->Reserved3 = 0; | |
5743 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5744 | byte_count = 3 /* pad */ + params + count; | |
5745 | pSMB->DataCount = cpu_to_le16(count); | |
5746 | pSMB->ParameterCount = cpu_to_le16(params); | |
5747 | pSMB->TotalDataCount = pSMB->DataCount; | |
5748 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5749 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5750 | pSMB->DataOffset = cpu_to_le16(offset); | |
5751 | pSMB->Fid = fid; | |
5752 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5753 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5754 | else | |
5755 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5756 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5757 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5758 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5759 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5760 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5761 | if (rc) |
f96637be JP |
5762 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5763 | rc); | |
1da177e4 | 5764 | |
50c2f753 | 5765 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5766 | since file handle passed in no longer valid */ |
5767 | ||
5768 | return rc; | |
5769 | } | |
5770 | ||
6d22f098 | 5771 | int |
6d5786a3 | 5772 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5773 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5774 | { | |
5775 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5776 | char *data_offset; | |
5777 | int rc = 0; | |
5778 | __u16 params, param_offset, offset, byte_count, count; | |
5779 | ||
f96637be | 5780 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5781 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5782 | ||
5783 | if (rc) | |
5784 | return rc; | |
5785 | ||
5786 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5787 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5788 | ||
5789 | params = 6; | |
5790 | pSMB->MaxSetupCount = 0; | |
5791 | pSMB->Reserved = 0; | |
5792 | pSMB->Flags = 0; | |
5793 | pSMB->Timeout = 0; | |
5794 | pSMB->Reserved2 = 0; | |
5795 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5796 | offset = param_offset + params; | |
5797 | ||
5798 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5799 | ||
5800 | count = 1; | |
5801 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5802 | /* BB find max SMB PDU from sess */ | |
5803 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5804 | pSMB->SetupCount = 1; | |
5805 | pSMB->Reserved3 = 0; | |
5806 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5807 | byte_count = 3 /* pad */ + params + count; | |
5808 | pSMB->DataCount = cpu_to_le16(count); | |
5809 | pSMB->ParameterCount = cpu_to_le16(params); | |
5810 | pSMB->TotalDataCount = pSMB->DataCount; | |
5811 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5812 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5813 | pSMB->DataOffset = cpu_to_le16(offset); | |
5814 | pSMB->Fid = fid; | |
5815 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5816 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5817 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5818 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5819 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5820 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5821 | if (rc) |
f96637be | 5822 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5823 | |
5824 | return rc; | |
5825 | } | |
1da177e4 LT |
5826 | |
5827 | int | |
6d5786a3 | 5828 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5829 | const char *fileName, const FILE_BASIC_INFO *data, |
5830 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5831 | { |
5832 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5833 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5834 | int name_len; | |
5835 | int rc = 0; | |
5836 | int bytes_returned = 0; | |
5837 | char *data_offset; | |
5838 | __u16 params, param_offset, offset, byte_count, count; | |
5839 | ||
f96637be | 5840 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5841 | |
5842 | SetTimesRetry: | |
5843 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5844 | (void **) &pSMBr); | |
5845 | if (rc) | |
5846 | return rc; | |
5847 | ||
5848 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5849 | name_len = | |
acbbb76a SF |
5850 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5851 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5852 | name_len++; /* trailing null */ |
5853 | name_len *= 2; | |
50c2f753 | 5854 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5855 | name_len = strnlen(fileName, PATH_MAX); |
5856 | name_len++; /* trailing null */ | |
5857 | strncpy(pSMB->FileName, fileName, name_len); | |
5858 | } | |
5859 | ||
5860 | params = 6 + name_len; | |
26f57364 | 5861 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5862 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5863 | /* BB find max SMB PDU from sess structure BB */ |
5864 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5865 | pSMB->MaxSetupCount = 0; |
5866 | pSMB->Reserved = 0; | |
5867 | pSMB->Flags = 0; | |
5868 | pSMB->Timeout = 0; | |
5869 | pSMB->Reserved2 = 0; | |
5870 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5871 | InformationLevel) - 4; |
1da177e4 LT |
5872 | offset = param_offset + params; |
5873 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5874 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5875 | pSMB->DataOffset = cpu_to_le16(offset); | |
5876 | pSMB->SetupCount = 1; | |
5877 | pSMB->Reserved3 = 0; | |
5878 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5879 | byte_count = 3 /* pad */ + params + count; | |
5880 | ||
5881 | pSMB->DataCount = cpu_to_le16(count); | |
5882 | pSMB->ParameterCount = cpu_to_le16(params); | |
5883 | pSMB->TotalDataCount = pSMB->DataCount; | |
5884 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5885 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5886 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5887 | else | |
5888 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5889 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5890 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5891 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5892 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5893 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5894 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5895 | if (rc) |
f96637be | 5896 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5897 | |
5898 | cifs_buf_release(pSMB); | |
5899 | ||
5900 | if (rc == -EAGAIN) | |
5901 | goto SetTimesRetry; | |
5902 | ||
5903 | return rc; | |
5904 | } | |
5905 | ||
5906 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5907 | /* Can be used to set attributes */ | |
5908 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5909 | handling it anyway and NT4 was what we thought it would be needed for | |
5910 | Do not delete it until we prove whether needed for Win9x though */ | |
5911 | int | |
6d5786a3 | 5912 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5913 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5914 | { | |
5915 | SETATTR_REQ *pSMB = NULL; | |
5916 | SETATTR_RSP *pSMBr = NULL; | |
5917 | int rc = 0; | |
5918 | int bytes_returned; | |
5919 | int name_len; | |
5920 | ||
f96637be | 5921 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5922 | |
5923 | SetAttrLgcyRetry: | |
5924 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5925 | (void **) &pSMBr); | |
5926 | if (rc) | |
5927 | return rc; | |
5928 | ||
5929 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5930 | name_len = | |
acbbb76a SF |
5931 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5932 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5933 | name_len++; /* trailing null */ |
5934 | name_len *= 2; | |
50c2f753 | 5935 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5936 | name_len = strnlen(fileName, PATH_MAX); |
5937 | name_len++; /* trailing null */ | |
5938 | strncpy(pSMB->fileName, fileName, name_len); | |
5939 | } | |
5940 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5941 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5942 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5943 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5944 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5945 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5946 | if (rc) |
f96637be | 5947 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5948 | |
5949 | cifs_buf_release(pSMB); | |
5950 | ||
5951 | if (rc == -EAGAIN) | |
5952 | goto SetAttrLgcyRetry; | |
5953 | ||
5954 | return rc; | |
5955 | } | |
5956 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5957 | ||
654cf14a JL |
5958 | static void |
5959 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5960 | const struct cifs_unix_set_info_args *args) | |
5961 | { | |
49418b2c | 5962 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5963 | u64 mode = args->mode; |
5964 | ||
49418b2c EB |
5965 | if (uid_valid(args->uid)) |
5966 | uid = from_kuid(&init_user_ns, args->uid); | |
5967 | if (gid_valid(args->gid)) | |
5968 | gid = from_kgid(&init_user_ns, args->gid); | |
5969 | ||
654cf14a JL |
5970 | /* |
5971 | * Samba server ignores set of file size to zero due to bugs in some | |
5972 | * older clients, but we should be precise - we use SetFileSize to | |
5973 | * set file size and do not want to truncate file size to zero | |
25985edc | 5974 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5975 | * zero instead of -1 here |
5976 | */ | |
5977 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5978 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5979 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5980 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5981 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5982 | data_offset->Uid = cpu_to_le64(uid); |
5983 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5984 | /* better to leave device as zero when it is */ |
5985 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5986 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5987 | data_offset->Permissions = cpu_to_le64(mode); | |
5988 | ||
5989 | if (S_ISREG(mode)) | |
5990 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5991 | else if (S_ISDIR(mode)) | |
5992 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5993 | else if (S_ISLNK(mode)) | |
5994 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5995 | else if (S_ISCHR(mode)) | |
5996 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5997 | else if (S_ISBLK(mode)) | |
5998 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5999 | else if (S_ISFIFO(mode)) | |
6000 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
6001 | else if (S_ISSOCK(mode)) | |
6002 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
6003 | } | |
6004 | ||
3bbeeb3c | 6005 | int |
6d5786a3 | 6006 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
6007 | const struct cifs_unix_set_info_args *args, |
6008 | u16 fid, u32 pid_of_opener) | |
6009 | { | |
6010 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 6011 | char *data_offset; |
3bbeeb3c JL |
6012 | int rc = 0; |
6013 | u16 params, param_offset, offset, byte_count, count; | |
6014 | ||
f96637be | 6015 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
6016 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
6017 | ||
6018 | if (rc) | |
6019 | return rc; | |
6020 | ||
6021 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
6022 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
6023 | ||
6024 | params = 6; | |
6025 | pSMB->MaxSetupCount = 0; | |
6026 | pSMB->Reserved = 0; | |
6027 | pSMB->Flags = 0; | |
6028 | pSMB->Timeout = 0; | |
6029 | pSMB->Reserved2 = 0; | |
6030 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
6031 | offset = param_offset + params; | |
6032 | ||
b2a3ad9c JL |
6033 | data_offset = (char *)pSMB + |
6034 | offsetof(struct smb_hdr, Protocol) + offset; | |
6035 | ||
3bbeeb3c JL |
6036 | count = sizeof(FILE_UNIX_BASIC_INFO); |
6037 | ||
6038 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
6039 | /* BB find max SMB PDU from sess */ | |
6040 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
6041 | pSMB->SetupCount = 1; | |
6042 | pSMB->Reserved3 = 0; | |
6043 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
6044 | byte_count = 3 /* pad */ + params + count; | |
6045 | pSMB->DataCount = cpu_to_le16(count); | |
6046 | pSMB->ParameterCount = cpu_to_le16(params); | |
6047 | pSMB->TotalDataCount = pSMB->DataCount; | |
6048 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6049 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6050 | pSMB->DataOffset = cpu_to_le16(offset); | |
6051 | pSMB->Fid = fid; | |
6052 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6053 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6054 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
6055 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6056 | ||
b2a3ad9c | 6057 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 6058 | |
792af7b0 | 6059 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 6060 | if (rc) |
f96637be JP |
6061 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
6062 | rc); | |
3bbeeb3c JL |
6063 | |
6064 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
6065 | since file handle passed in no longer valid */ | |
6066 | ||
6067 | return rc; | |
6068 | } | |
6069 | ||
1da177e4 | 6070 | int |
6d5786a3 | 6071 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6072 | const char *file_name, |
01ea95e3 JL |
6073 | const struct cifs_unix_set_info_args *args, |
6074 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6075 | { |
6076 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6077 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6078 | int name_len; | |
6079 | int rc = 0; | |
6080 | int bytes_returned = 0; | |
6081 | FILE_UNIX_BASIC_INFO *data_offset; | |
6082 | __u16 params, param_offset, offset, count, byte_count; | |
6083 | ||
f96637be | 6084 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6085 | setPermsRetry: |
6086 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6087 | (void **) &pSMBr); | |
6088 | if (rc) | |
6089 | return rc; | |
6090 | ||
6091 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6092 | name_len = | |
ff691e96 | 6093 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6094 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6095 | name_len++; /* trailing null */ |
6096 | name_len *= 2; | |
3e87d803 | 6097 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6098 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6099 | name_len++; /* trailing null */ |
ff691e96 | 6100 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6101 | } |
6102 | ||
6103 | params = 6 + name_len; | |
26f57364 | 6104 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6105 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6106 | /* BB find max SMB PDU from sess structure BB */ |
6107 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6108 | pSMB->MaxSetupCount = 0; |
6109 | pSMB->Reserved = 0; | |
6110 | pSMB->Flags = 0; | |
6111 | pSMB->Timeout = 0; | |
6112 | pSMB->Reserved2 = 0; | |
6113 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6114 | InformationLevel) - 4; |
1da177e4 LT |
6115 | offset = param_offset + params; |
6116 | data_offset = | |
6117 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6118 | offset); | |
6119 | memset(data_offset, 0, count); | |
6120 | pSMB->DataOffset = cpu_to_le16(offset); | |
6121 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6122 | pSMB->SetupCount = 1; | |
6123 | pSMB->Reserved3 = 0; | |
6124 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6125 | byte_count = 3 /* pad */ + params + count; | |
6126 | pSMB->ParameterCount = cpu_to_le16(params); | |
6127 | pSMB->DataCount = cpu_to_le16(count); | |
6128 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6129 | pSMB->TotalDataCount = pSMB->DataCount; | |
6130 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6131 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6132 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6133 | |
654cf14a | 6134 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6135 | |
6136 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6137 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6138 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6139 | if (rc) |
f96637be | 6140 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6141 | |
0d817bc0 | 6142 | cifs_buf_release(pSMB); |
1da177e4 LT |
6143 | if (rc == -EAGAIN) |
6144 | goto setPermsRetry; | |
6145 | return rc; | |
6146 | } | |
6147 | ||
1da177e4 | 6148 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6149 | /* |
6150 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6151 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6152 | * it looks for that attribute name and stuffs that value into the EAData | |
6153 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6154 | * buffer. In both cases, the return value is either the length of the | |
6155 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6156 | * the data isn't copied to it, but the length is returned. | |
6157 | */ | |
1da177e4 | 6158 | ssize_t |
6d5786a3 | 6159 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6160 | const unsigned char *searchName, const unsigned char *ea_name, |
6161 | char *EAData, size_t buf_size, | |
6162 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6163 | { |
6164 | /* BB assumes one setup word */ | |
6165 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6166 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6167 | int rc = 0; | |
6168 | int bytes_returned; | |
6e462b9f | 6169 | int list_len; |
f0d3868b | 6170 | struct fealist *ea_response_data; |
50c2f753 SF |
6171 | struct fea *temp_fea; |
6172 | char *temp_ptr; | |
0cd126b5 | 6173 | char *end_of_smb; |
f0d3868b | 6174 | __u16 params, byte_count, data_offset; |
5980fc96 | 6175 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6176 | |
f96637be | 6177 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6178 | QAllEAsRetry: |
6179 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6180 | (void **) &pSMBr); | |
6181 | if (rc) | |
6182 | return rc; | |
6183 | ||
6184 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6185 | list_len = |
acbbb76a SF |
6186 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6187 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6188 | list_len++; /* trailing null */ |
6189 | list_len *= 2; | |
1da177e4 | 6190 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6191 | list_len = strnlen(searchName, PATH_MAX); |
6192 | list_len++; /* trailing null */ | |
6193 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6194 | } |
6195 | ||
6e462b9f | 6196 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6197 | pSMB->TotalDataCount = 0; |
6198 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6199 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6200 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6201 | pSMB->MaxSetupCount = 0; |
6202 | pSMB->Reserved = 0; | |
6203 | pSMB->Flags = 0; | |
6204 | pSMB->Timeout = 0; | |
6205 | pSMB->Reserved2 = 0; | |
6206 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6207 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6208 | pSMB->DataCount = 0; |
6209 | pSMB->DataOffset = 0; | |
6210 | pSMB->SetupCount = 1; | |
6211 | pSMB->Reserved3 = 0; | |
6212 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6213 | byte_count = params + 1 /* pad */ ; | |
6214 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6215 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6216 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6217 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6218 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6219 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6220 | ||
6221 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6222 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6223 | if (rc) { | |
f96637be | 6224 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6225 | goto QAllEAsOut; |
6226 | } | |
1da177e4 | 6227 | |
f0d3868b JL |
6228 | |
6229 | /* BB also check enough total bytes returned */ | |
6230 | /* BB we need to improve the validity checking | |
6231 | of these trans2 responses */ | |
6232 | ||
6233 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6234 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6235 | rc = -EIO; /* bad smb */ |
6236 | goto QAllEAsOut; | |
6237 | } | |
6238 | ||
6239 | /* check that length of list is not more than bcc */ | |
6240 | /* check that each entry does not go beyond length | |
6241 | of list */ | |
6242 | /* check that each element of each entry does not | |
6243 | go beyond end of list */ | |
6244 | /* validate_trans2_offsets() */ | |
6245 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6246 | ||
6247 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6248 | ea_response_data = (struct fealist *) | |
6249 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6250 | ||
6e462b9f | 6251 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6252 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6253 | if (list_len <= 8) { |
f96637be | 6254 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6255 | /* didn't find the named attribute */ |
6256 | if (ea_name) | |
6257 | rc = -ENODATA; | |
f0d3868b JL |
6258 | goto QAllEAsOut; |
6259 | } | |
6260 | ||
0cd126b5 | 6261 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6262 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6263 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6264 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6265 | rc = -EIO; |
6266 | goto QAllEAsOut; | |
6267 | } | |
6268 | ||
f0d3868b | 6269 | /* account for ea list len */ |
6e462b9f | 6270 | list_len -= 4; |
f0d3868b JL |
6271 | temp_fea = ea_response_data->list; |
6272 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6273 | while (list_len > 0) { |
122ca007 | 6274 | unsigned int name_len; |
f0d3868b | 6275 | __u16 value_len; |
0cd126b5 | 6276 | |
6e462b9f | 6277 | list_len -= 4; |
f0d3868b | 6278 | temp_ptr += 4; |
0cd126b5 JL |
6279 | /* make sure we can read name_len and value_len */ |
6280 | if (list_len < 0) { | |
f96637be | 6281 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6282 | rc = -EIO; |
6283 | goto QAllEAsOut; | |
6284 | } | |
6285 | ||
6286 | name_len = temp_fea->name_len; | |
6287 | value_len = le16_to_cpu(temp_fea->value_len); | |
6288 | list_len -= name_len + 1 + value_len; | |
6289 | if (list_len < 0) { | |
f96637be | 6290 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6291 | rc = -EIO; |
6292 | goto QAllEAsOut; | |
6293 | } | |
6294 | ||
31c0519f | 6295 | if (ea_name) { |
91d065c4 | 6296 | if (ea_name_len == name_len && |
ac423446 | 6297 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6298 | temp_ptr += name_len + 1; |
6299 | rc = value_len; | |
6300 | if (buf_size == 0) | |
6301 | goto QAllEAsOut; | |
6302 | if ((size_t)value_len > buf_size) { | |
6303 | rc = -ERANGE; | |
6304 | goto QAllEAsOut; | |
6305 | } | |
6306 | memcpy(EAData, temp_ptr, value_len); | |
6307 | goto QAllEAsOut; | |
6308 | } | |
f0d3868b | 6309 | } else { |
31c0519f JL |
6310 | /* account for prefix user. and trailing null */ |
6311 | rc += (5 + 1 + name_len); | |
6312 | if (rc < (int) buf_size) { | |
6313 | memcpy(EAData, "user.", 5); | |
6314 | EAData += 5; | |
6315 | memcpy(EAData, temp_ptr, name_len); | |
6316 | EAData += name_len; | |
6317 | /* null terminate name */ | |
6318 | *EAData = 0; | |
6319 | ++EAData; | |
6320 | } else if (buf_size == 0) { | |
6321 | /* skip copy - calc size only */ | |
6322 | } else { | |
6323 | /* stop before overrun buffer */ | |
6324 | rc = -ERANGE; | |
6325 | break; | |
6326 | } | |
1da177e4 | 6327 | } |
0cd126b5 | 6328 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6329 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6330 | } |
f0d3868b | 6331 | |
31c0519f JL |
6332 | /* didn't find the named attribute */ |
6333 | if (ea_name) | |
6334 | rc = -ENODATA; | |
6335 | ||
f0d3868b | 6336 | QAllEAsOut: |
0d817bc0 | 6337 | cifs_buf_release(pSMB); |
1da177e4 LT |
6338 | if (rc == -EAGAIN) |
6339 | goto QAllEAsRetry; | |
6340 | ||
6341 | return (ssize_t)rc; | |
6342 | } | |
6343 | ||
1da177e4 | 6344 | int |
6d5786a3 PS |
6345 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6346 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6347 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6348 | int remap) | |
1da177e4 LT |
6349 | { |
6350 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6351 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6352 | struct fealist *parm_data; | |
6353 | int name_len; | |
6354 | int rc = 0; | |
6355 | int bytes_returned = 0; | |
6356 | __u16 params, param_offset, byte_count, offset, count; | |
6357 | ||
f96637be | 6358 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6359 | SetEARetry: |
6360 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6361 | (void **) &pSMBr); | |
6362 | if (rc) | |
6363 | return rc; | |
6364 | ||
6365 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6366 | name_len = | |
acbbb76a SF |
6367 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6368 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6369 | name_len++; /* trailing null */ |
6370 | name_len *= 2; | |
50c2f753 | 6371 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6372 | name_len = strnlen(fileName, PATH_MAX); |
6373 | name_len++; /* trailing null */ | |
6374 | strncpy(pSMB->FileName, fileName, name_len); | |
6375 | } | |
6376 | ||
6377 | params = 6 + name_len; | |
6378 | ||
6379 | /* done calculating parms using name_len of file name, | |
6380 | now use name_len to calculate length of ea name | |
6381 | we are going to create in the inode xattrs */ | |
790fe579 | 6382 | if (ea_name == NULL) |
1da177e4 LT |
6383 | name_len = 0; |
6384 | else | |
50c2f753 | 6385 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6386 | |
dae5dbdb | 6387 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6388 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6389 | /* BB find max SMB PDU from sess */ |
6390 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6391 | pSMB->MaxSetupCount = 0; |
6392 | pSMB->Reserved = 0; | |
6393 | pSMB->Flags = 0; | |
6394 | pSMB->Timeout = 0; | |
6395 | pSMB->Reserved2 = 0; | |
6396 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6397 | InformationLevel) - 4; |
1da177e4 LT |
6398 | offset = param_offset + params; |
6399 | pSMB->InformationLevel = | |
6400 | cpu_to_le16(SMB_SET_FILE_EA); | |
6401 | ||
6402 | parm_data = | |
6403 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6404 | offset); | |
6405 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6406 | pSMB->DataOffset = cpu_to_le16(offset); | |
6407 | pSMB->SetupCount = 1; | |
6408 | pSMB->Reserved3 = 0; | |
6409 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6410 | byte_count = 3 /* pad */ + params + count; | |
6411 | pSMB->DataCount = cpu_to_le16(count); | |
6412 | parm_data->list_len = cpu_to_le32(count); | |
6413 | parm_data->list[0].EA_flags = 0; | |
6414 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6415 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6416 | /* EA names are always ASCII */ |
790fe579 | 6417 | if (ea_name) |
50c2f753 | 6418 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6419 | parm_data->list[0].name[name_len] = 0; |
6420 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6421 | /* caller ensures that ea_value_len is less than 64K but | |
6422 | we need to ensure that it fits within the smb */ | |
6423 | ||
50c2f753 SF |
6424 | /*BB add length check to see if it would fit in |
6425 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6426 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6427 | if (ea_value_len) | |
50c2f753 SF |
6428 | memcpy(parm_data->list[0].name+name_len+1, |
6429 | ea_value, ea_value_len); | |
1da177e4 LT |
6430 | |
6431 | pSMB->TotalDataCount = pSMB->DataCount; | |
6432 | pSMB->ParameterCount = cpu_to_le16(params); | |
6433 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6434 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6435 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6436 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6437 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6438 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6439 | if (rc) |
f96637be | 6440 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6441 | |
6442 | cifs_buf_release(pSMB); | |
6443 | ||
6444 | if (rc == -EAGAIN) | |
6445 | goto SetEARetry; | |
6446 | ||
6447 | return rc; | |
6448 | } | |
1da177e4 | 6449 | #endif |
0eff0e26 SF |
6450 | |
6451 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6452 | /* | |
6453 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6454 | * to allow network clients (such as Windows) to display updated | |
6455 | * lists of files in directory listings automatically when | |
6456 | * files are added by one user when another user has the | |
6457 | * same directory open on their desktop. The Linux cifs kernel | |
6458 | * client hooked into the kernel side of this interface for | |
6459 | * the same reason, but ironically when the VFS moved from | |
6460 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6461 | * network file system clients (the most obvious use case | |
6462 | * for notify interfaces is when multiple users can update | |
6463 | * the contents of the same directory - exactly what network | |
6464 | * file systems can do) although the server (Samba) could | |
6465 | * still use it. For the short term we leave the worker | |
6466 | * function ifdeffed out (below) until inotify is fixed | |
6467 | * in the VFS to make it easier to plug in network file | |
6468 | * system clients. If inotify turns out to be permanently | |
6469 | * incompatible for network fs clients, we could instead simply | |
6470 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6471 | */ | |
6d5786a3 | 6472 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6473 | const int notify_subdirs, const __u16 netfid, |
6474 | __u32 filter, struct file *pfile, int multishot, | |
6475 | const struct nls_table *nls_codepage) | |
6476 | { | |
6477 | int rc = 0; | |
6478 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6479 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6480 | struct dir_notify_req *dnotify_req; | |
6481 | int bytes_returned; | |
6482 | ||
f96637be | 6483 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6484 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6485 | (void **) &pSMBr); | |
6486 | if (rc) | |
6487 | return rc; | |
6488 | ||
6489 | pSMB->TotalParameterCount = 0 ; | |
6490 | pSMB->TotalDataCount = 0; | |
6491 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6492 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6493 | pSMB->MaxSetupCount = 4; |
6494 | pSMB->Reserved = 0; | |
6495 | pSMB->ParameterOffset = 0; | |
6496 | pSMB->DataCount = 0; | |
6497 | pSMB->DataOffset = 0; | |
6498 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6499 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6500 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6501 | if (notify_subdirs) | |
6502 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6503 | pSMB->Reserved2 = 0; | |
6504 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6505 | pSMB->Fid = netfid; /* file handle always le */ | |
6506 | pSMB->ByteCount = 0; | |
6507 | ||
6508 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6509 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6510 | CIFS_ASYNC_OP); | |
6511 | if (rc) { | |
f96637be | 6512 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6513 | } else { |
6514 | /* Add file to outstanding requests */ | |
6515 | /* BB change to kmem cache alloc */ | |
6516 | dnotify_req = kmalloc( | |
6517 | sizeof(struct dir_notify_req), | |
6518 | GFP_KERNEL); | |
6519 | if (dnotify_req) { | |
6520 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6521 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6522 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6523 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6524 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6525 | dnotify_req->netfid = netfid; | |
6526 | dnotify_req->pfile = pfile; | |
6527 | dnotify_req->filter = filter; | |
6528 | dnotify_req->multishot = multishot; | |
6529 | spin_lock(&GlobalMid_Lock); | |
6530 | list_add_tail(&dnotify_req->lhead, | |
6531 | &GlobalDnotifyReqList); | |
6532 | spin_unlock(&GlobalMid_Lock); | |
6533 | } else | |
6534 | rc = -ENOMEM; | |
6535 | } | |
6536 | cifs_buf_release(pSMB); | |
6537 | return rc; | |
6538 | } | |
6539 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |