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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
7c0f6ba6 | 38 | #include <linux/uaccess.h> |
1da177e4 LT |
39 | #include "cifspdu.h" |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
aa24d1e9 PS |
89 | /* |
90 | * Mark as invalid, all open files on tree connections since they | |
91 | * were closed when session to server was lost. | |
92 | */ | |
93 | void | |
94 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 | 99 | |
aa24d1e9 | 100 | /* list all files open on tree connection and mark them invalid */ |
3afca265 | 101 | spin_lock(&tcon->open_file_lock); |
aa24d1e9 | 102 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 103 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 104 | open_file->invalidHandle = true; |
3bc303c2 | 105 | open_file->oplock_break_cancelled = true; |
1da177e4 | 106 | } |
3afca265 | 107 | spin_unlock(&tcon->open_file_lock); |
aa24d1e9 PS |
108 | /* |
109 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
110 | * to this tcon. | |
111 | */ | |
1da177e4 LT |
112 | } |
113 | ||
9162ab20 JL |
114 | /* reconnect the socket, tcon, and smb session if needed */ |
115 | static int | |
96daf2b0 | 116 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 117 | { |
c4a5534a | 118 | int rc; |
96daf2b0 | 119 | struct cifs_ses *ses; |
9162ab20 JL |
120 | struct TCP_Server_Info *server; |
121 | struct nls_table *nls_codepage; | |
122 | ||
123 | /* | |
124 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
125 | * tcp and smb session status done differently for those three - in the | |
126 | * calling routine | |
127 | */ | |
128 | if (!tcon) | |
129 | return 0; | |
130 | ||
131 | ses = tcon->ses; | |
132 | server = ses->server; | |
133 | ||
134 | /* | |
135 | * only tree disconnect, open, and write, (and ulogoff which does not | |
136 | * have tcon) are allowed as we start force umount | |
137 | */ | |
138 | if (tcon->tidStatus == CifsExiting) { | |
139 | if (smb_command != SMB_COM_WRITE_ANDX && | |
140 | smb_command != SMB_COM_OPEN_ANDX && | |
141 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
142 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
143 | smb_command); | |
9162ab20 JL |
144 | return -ENODEV; |
145 | } | |
146 | } | |
147 | ||
9162ab20 JL |
148 | /* |
149 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
150 | * greater than cifs socket timeout which is 7 seconds | |
151 | */ | |
152 | while (server->tcpStatus == CifsNeedReconnect) { | |
153 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 154 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 155 | |
fd88ce93 | 156 | /* are we still trying to reconnect? */ |
9162ab20 JL |
157 | if (server->tcpStatus != CifsNeedReconnect) |
158 | break; | |
159 | ||
160 | /* | |
161 | * on "soft" mounts we wait once. Hard mounts keep | |
162 | * retrying until process is killed or server comes | |
163 | * back on-line | |
164 | */ | |
d402539b | 165 | if (!tcon->retry) { |
f96637be | 166 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
167 | return -EHOSTDOWN; |
168 | } | |
169 | } | |
170 | ||
171 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
172 | return 0; | |
173 | ||
174 | nls_codepage = load_nls_default(); | |
175 | ||
176 | /* | |
177 | * need to prevent multiple threads trying to simultaneously | |
178 | * reconnect the same SMB session | |
179 | */ | |
d7b619cf | 180 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
181 | rc = cifs_negotiate_protocol(0, ses); |
182 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
183 | rc = cifs_setup_session(0, ses, nls_codepage); |
184 | ||
185 | /* do we need to reconnect tcon? */ | |
186 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
188 | goto out; |
189 | } | |
190 | ||
aa24d1e9 | 191 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 192 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 193 | mutex_unlock(&ses->session_mutex); |
f96637be | 194 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 JL |
195 | |
196 | if (rc) | |
197 | goto out; | |
198 | ||
9162ab20 JL |
199 | atomic_inc(&tconInfoReconnectCount); |
200 | ||
201 | /* tell server Unix caps we support */ | |
202 | if (ses->capabilities & CAP_UNIX) | |
203 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
204 | ||
205 | /* | |
206 | * Removed call to reopen open files here. It is safer (and faster) to | |
207 | * reopen files one at a time as needed in read and write. | |
208 | * | |
209 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
210 | */ | |
211 | ||
212 | out: | |
213 | /* | |
214 | * Check if handle based operation so we know whether we can continue | |
215 | * or not without returning to caller to reset file handle | |
216 | */ | |
217 | switch (smb_command) { | |
218 | case SMB_COM_READ_ANDX: | |
219 | case SMB_COM_WRITE_ANDX: | |
220 | case SMB_COM_CLOSE: | |
221 | case SMB_COM_FIND_CLOSE2: | |
222 | case SMB_COM_LOCKING_ANDX: | |
223 | rc = -EAGAIN; | |
224 | } | |
225 | ||
226 | unload_nls(nls_codepage); | |
227 | return rc; | |
228 | } | |
229 | ||
ad7a2926 SF |
230 | /* Allocate and return pointer to an SMB request buffer, and set basic |
231 | SMB information in the SMB header. If the return code is zero, this | |
232 | function must have filled in request_buf pointer */ | |
1da177e4 | 233 | static int |
96daf2b0 | 234 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 235 | void **request_buf) |
1da177e4 | 236 | { |
f569599a | 237 | int rc; |
1da177e4 | 238 | |
9162ab20 | 239 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 240 | if (rc) |
1da177e4 LT |
241 | return rc; |
242 | ||
243 | *request_buf = cifs_small_buf_get(); | |
244 | if (*request_buf == NULL) { | |
245 | /* BB should we add a retry in here if not a writepage? */ | |
246 | return -ENOMEM; | |
247 | } | |
248 | ||
63135e08 | 249 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 250 | tcon, wct); |
1da177e4 | 251 | |
790fe579 SF |
252 | if (tcon != NULL) |
253 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 254 | |
f569599a | 255 | return 0; |
5815449d SF |
256 | } |
257 | ||
12b3b8ff | 258 | int |
50c2f753 | 259 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 260 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
261 | { |
262 | int rc; | |
50c2f753 | 263 | struct smb_hdr *buffer; |
12b3b8ff | 264 | |
5815449d | 265 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 266 | if (rc) |
12b3b8ff SF |
267 | return rc; |
268 | ||
04fdabe1 | 269 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 270 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
271 | if (ses->capabilities & CAP_UNICODE) |
272 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 273 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
274 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
275 | ||
276 | /* uid, tid can stay at zero as set in header assemble */ | |
277 | ||
50c2f753 | 278 | /* BB add support for turning on the signing when |
12b3b8ff SF |
279 | this function is used after 1st of session setup requests */ |
280 | ||
281 | return rc; | |
282 | } | |
1da177e4 LT |
283 | |
284 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
285 | static int | |
96daf2b0 | 286 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 287 | void **request_buf, void **response_buf) |
1da177e4 | 288 | { |
1da177e4 LT |
289 | *request_buf = cifs_buf_get(); |
290 | if (*request_buf == NULL) { | |
291 | /* BB should we add a retry in here if not a writepage? */ | |
292 | return -ENOMEM; | |
293 | } | |
294 | /* Although the original thought was we needed the response buf for */ | |
295 | /* potential retries of smb operations it turns out we can determine */ | |
296 | /* from the mid flags when the request buffer can be resent without */ | |
297 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 298 | if (response_buf) |
50c2f753 | 299 | *response_buf = *request_buf; |
1da177e4 LT |
300 | |
301 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 302 | wct); |
1da177e4 | 303 | |
790fe579 SF |
304 | if (tcon != NULL) |
305 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 306 | |
f569599a JL |
307 | return 0; |
308 | } | |
309 | ||
310 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
311 | static int | |
96daf2b0 | 312 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
313 | void **request_buf, void **response_buf) |
314 | { | |
315 | int rc; | |
316 | ||
317 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
318 | if (rc) | |
319 | return rc; | |
320 | ||
321 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
322 | } | |
323 | ||
324 | static int | |
96daf2b0 | 325 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
326 | void **request_buf, void **response_buf) |
327 | { | |
328 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
329 | return -EHOSTDOWN; | |
330 | ||
331 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
332 | } |
333 | ||
50c2f753 | 334 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 335 | { |
12df83c9 JL |
336 | unsigned int total_size; |
337 | ||
338 | /* check for plausible wct */ | |
339 | if (pSMB->hdr.WordCount < 10) | |
340 | goto vt2_err; | |
1da177e4 | 341 | |
1da177e4 | 342 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
343 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
344 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
345 | goto vt2_err; | |
346 | ||
12df83c9 JL |
347 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
348 | if (total_size >= 512) | |
349 | goto vt2_err; | |
350 | ||
fd5707e1 JL |
351 | /* check that bcc is at least as big as parms + data, and that it is |
352 | * less than negotiated smb buffer | |
353 | */ | |
12df83c9 JL |
354 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
355 | if (total_size > get_bcc(&pSMB->hdr) || | |
356 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
357 | goto vt2_err; | |
358 | ||
359 | return 0; | |
360 | vt2_err: | |
50c2f753 | 361 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 362 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 363 | return -EINVAL; |
1da177e4 | 364 | } |
690c522f | 365 | |
31d9e2bd | 366 | static int |
3f618223 | 367 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
368 | { |
369 | int rc = 0; | |
370 | u16 count; | |
371 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 372 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
373 | |
374 | count = get_bcc(&pSMBr->hdr); | |
375 | if (count < SMB1_CLIENT_GUID_SIZE) | |
376 | return -EIO; | |
377 | ||
378 | spin_lock(&cifs_tcp_ses_lock); | |
379 | if (server->srv_count > 1) { | |
380 | spin_unlock(&cifs_tcp_ses_lock); | |
381 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
382 | cifs_dbg(FYI, "server UID changed\n"); | |
383 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
384 | } | |
385 | } else { | |
386 | spin_unlock(&cifs_tcp_ses_lock); | |
387 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
388 | } | |
389 | ||
390 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 391 | server->sec_ntlmssp = true; |
31d9e2bd JL |
392 | } else { |
393 | count -= SMB1_CLIENT_GUID_SIZE; | |
394 | rc = decode_negTokenInit( | |
395 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
396 | if (rc != 1) | |
397 | return -EINVAL; | |
31d9e2bd JL |
398 | } |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
9ddec561 | 403 | int |
38d77c50 | 404 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 405 | { |
50285882 JL |
406 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
407 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
408 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
409 | ||
410 | /* | |
411 | * Is signing required by mnt options? If not then check | |
412 | * global_secflags to see if it is there. | |
413 | */ | |
414 | if (!mnt_sign_required) | |
415 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
416 | CIFSSEC_MUST_SIGN); | |
417 | ||
418 | /* | |
419 | * If signing is required then it's automatically enabled too, | |
420 | * otherwise, check to see if the secflags allow it. | |
421 | */ | |
422 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
423 | (global_secflags & CIFSSEC_MAY_SIGN); | |
424 | ||
425 | /* If server requires signing, does client allow it? */ | |
426 | if (srv_sign_required) { | |
427 | if (!mnt_sign_enabled) { | |
428 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
429 | return -ENOTSUPP; | |
9ddec561 | 430 | } |
38d77c50 JL |
431 | server->sign = true; |
432 | } | |
433 | ||
434 | /* If client requires signing, does server allow it? */ | |
435 | if (mnt_sign_required) { | |
436 | if (!srv_sign_enabled) { | |
437 | cifs_dbg(VFS, "Server does not support signing!"); | |
438 | return -ENOTSUPP; | |
439 | } | |
440 | server->sign = true; | |
9ddec561 JL |
441 | } |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
2190eca1 JL |
446 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
447 | static int | |
3f618223 | 448 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
449 | { |
450 | __s16 tmp; | |
451 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
452 | ||
453 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
454 | return -EOPNOTSUPP; | |
455 | ||
2190eca1 JL |
456 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
457 | server->maxReq = min_t(unsigned int, | |
458 | le16_to_cpu(rsp->MaxMpxCount), | |
459 | cifs_max_pending); | |
460 | set_credits(server, server->maxReq); | |
461 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
2190eca1 JL |
462 | /* even though we do not use raw we might as well set this |
463 | accurately, in case we ever find a need for it */ | |
464 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
465 | server->max_rw = 0xFF00; | |
466 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
467 | } else { | |
468 | server->max_rw = 0;/* do not need to use raw anyway */ | |
469 | server->capabilities = CAP_MPX_MODE; | |
470 | } | |
471 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
472 | if (tmp == -1) { | |
473 | /* OS/2 often does not set timezone therefore | |
474 | * we must use server time to calc time zone. | |
475 | * Could deviate slightly from the right zone. | |
476 | * Smallest defined timezone difference is 15 minutes | |
477 | * (i.e. Nepal). Rounding up/down is done to match | |
478 | * this requirement. | |
479 | */ | |
480 | int val, seconds, remain, result; | |
e37fea58 DD |
481 | struct timespec ts; |
482 | unsigned long utc = ktime_get_real_seconds(); | |
2190eca1 JL |
483 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
484 | rsp->SrvTime.Time, 0); | |
485 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
e37fea58 DD |
486 | (int)ts.tv_sec, (int)utc, |
487 | (int)(utc - ts.tv_sec)); | |
488 | val = (int)(utc - ts.tv_sec); | |
2190eca1 JL |
489 | seconds = abs(val); |
490 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
491 | remain = seconds % MIN_TZ_ADJ; | |
492 | if (remain >= (MIN_TZ_ADJ / 2)) | |
493 | result += MIN_TZ_ADJ; | |
494 | if (val < 0) | |
495 | result = -result; | |
496 | server->timeAdj = result; | |
497 | } else { | |
498 | server->timeAdj = (int)tmp; | |
499 | server->timeAdj *= 60; /* also in seconds */ | |
500 | } | |
501 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
502 | ||
503 | ||
504 | /* BB get server time for time conversions and add | |
505 | code to use it and timezone since this is not UTC */ | |
506 | ||
507 | if (rsp->EncryptionKeyLength == | |
508 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
509 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
510 | CIFS_CRYPTO_KEY_SIZE); | |
511 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
512 | return -EIO; /* need cryptkey unless plain text */ | |
513 | } | |
514 | ||
515 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
516 | return 0; | |
517 | } | |
518 | #else | |
519 | static inline int | |
3f618223 | 520 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
521 | { |
522 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
523 | return -EOPNOTSUPP; | |
524 | } | |
525 | #endif | |
526 | ||
9193400b | 527 | static bool |
3f618223 | 528 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 529 | { |
3f618223 JL |
530 | switch (sectype) { |
531 | case RawNTLMSSP: | |
532 | case Kerberos: | |
9193400b | 533 | return true; |
3f618223 JL |
534 | case Unspecified: |
535 | if (global_secflags & | |
536 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
537 | return true; | |
538 | /* Fallthrough */ | |
539 | default: | |
540 | return false; | |
541 | } | |
9193400b JL |
542 | } |
543 | ||
1da177e4 | 544 | int |
286170aa | 545 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
546 | { |
547 | NEGOTIATE_REQ *pSMB; | |
548 | NEGOTIATE_RSP *pSMBr; | |
549 | int rc = 0; | |
550 | int bytes_returned; | |
3979877e | 551 | int i; |
3534b850 | 552 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
553 | u16 count; |
554 | ||
3534b850 JL |
555 | if (!server) { |
556 | WARN(1, "%s: server is NULL!\n", __func__); | |
557 | return -EIO; | |
1da177e4 | 558 | } |
3534b850 | 559 | |
1da177e4 LT |
560 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
561 | (void **) &pSMB, (void **) &pSMBr); | |
562 | if (rc) | |
563 | return rc; | |
750d1151 | 564 | |
88257360 | 565 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 566 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 567 | |
3f618223 | 568 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 569 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
570 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
571 | } | |
50c2f753 | 572 | |
3979877e | 573 | count = 0; |
50c2f753 | 574 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
575 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
576 | count += strlen(protocols[i].name) + 1; | |
577 | /* null at end of source and target buffers anyway */ | |
578 | } | |
be8e3b00 | 579 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
580 | pSMB->ByteCount = cpu_to_le16(count); |
581 | ||
582 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
583 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 584 | if (rc != 0) |
254e55ed SF |
585 | goto neg_err_exit; |
586 | ||
9bf67e51 | 587 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 588 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 589 | /* Check wct = 1 error case */ |
9bf67e51 | 590 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 591 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 592 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
593 | could not negotiate a common dialect */ |
594 | rc = -EOPNOTSUPP; | |
595 | goto neg_err_exit; | |
790fe579 | 596 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 597 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 598 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 599 | goto signing_check; |
790fe579 | 600 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
601 | /* unknown wct */ |
602 | rc = -EOPNOTSUPP; | |
603 | goto neg_err_exit; | |
604 | } | |
2190eca1 JL |
605 | /* else wct == 17, NTLM or better */ |
606 | ||
96daf2b0 SF |
607 | server->sec_mode = pSMBr->SecurityMode; |
608 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 609 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 610 | |
254e55ed SF |
611 | /* one byte, so no need to convert this or EncryptionKeyLen from |
612 | little endian */ | |
10b9b98e PS |
613 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
614 | cifs_max_pending); | |
45275789 | 615 | set_credits(server, server->maxReq); |
254e55ed | 616 | /* probably no need to store and check maxvcs */ |
c974befa | 617 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 618 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 619 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 620 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
621 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
622 | server->timeAdj *= 60; | |
31d9e2bd | 623 | |
e598d1d8 JL |
624 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
625 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 626 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 627 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
628 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
629 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 630 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 631 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 632 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 633 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
634 | } else { |
635 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 636 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 637 | } |
254e55ed SF |
638 | |
639 | signing_check: | |
9ddec561 | 640 | if (!rc) |
38d77c50 | 641 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 642 | neg_err_exit: |
4a6d87f1 | 643 | cifs_buf_release(pSMB); |
254e55ed | 644 | |
f96637be | 645 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
646 | return rc; |
647 | } | |
648 | ||
649 | int | |
2e6e02ab | 650 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
651 | { |
652 | struct smb_hdr *smb_buffer; | |
1da177e4 | 653 | int rc = 0; |
1da177e4 | 654 | |
f96637be | 655 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 656 | |
f1987b44 JL |
657 | /* BB: do we need to check this? These should never be NULL. */ |
658 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
659 | return -EIO; | |
1da177e4 | 660 | |
f1987b44 JL |
661 | /* |
662 | * No need to return error on this operation if tid invalidated and | |
663 | * closed on server already e.g. due to tcp session crashing. Also, | |
664 | * the tcon is no longer on the list, so no need to take lock before | |
665 | * checking this. | |
666 | */ | |
268875b9 | 667 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 668 | return 0; |
1da177e4 | 669 | |
50c2f753 | 670 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 671 | (void **)&smb_buffer); |
f1987b44 | 672 | if (rc) |
1da177e4 | 673 | return rc; |
133672ef | 674 | |
792af7b0 | 675 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 676 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 677 | if (rc) |
f96637be | 678 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 679 | |
50c2f753 | 680 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 681 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
682 | if (rc == -EAGAIN) |
683 | rc = 0; | |
684 | ||
685 | return rc; | |
686 | } | |
687 | ||
766fdbb5 JL |
688 | /* |
689 | * This is a no-op for now. We're not really interested in the reply, but | |
690 | * rather in the fact that the server sent one and that server->lstrp | |
691 | * gets updated. | |
692 | * | |
693 | * FIXME: maybe we should consider checking that the reply matches request? | |
694 | */ | |
695 | static void | |
696 | cifs_echo_callback(struct mid_q_entry *mid) | |
697 | { | |
698 | struct TCP_Server_Info *server = mid->callback_data; | |
699 | ||
700 | DeleteMidQEntry(mid); | |
a891f0f8 | 701 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
702 | } |
703 | ||
704 | int | |
705 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
706 | { | |
707 | ECHO_REQ *smb; | |
708 | int rc = 0; | |
738f9de5 PS |
709 | struct kvec iov[2]; |
710 | struct smb_rqst rqst = { .rq_iov = iov, | |
711 | .rq_nvec = 2 }; | |
766fdbb5 | 712 | |
f96637be | 713 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
714 | |
715 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
716 | if (rc) | |
717 | return rc; | |
718 | ||
26c9cb66 SF |
719 | if (server->capabilities & CAP_UNICODE) |
720 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
721 | ||
766fdbb5 | 722 | /* set up echo request */ |
5443d130 | 723 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
724 | smb->hdr.WordCount = 1; |
725 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 726 | put_bcc(1, &smb->hdr); |
766fdbb5 | 727 | smb->Data[0] = 'a'; |
be8e3b00 | 728 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
729 | |
730 | iov[0].iov_len = 4; | |
731 | iov[0].iov_base = smb; | |
732 | iov[1].iov_len = get_rfc1002_length(smb); | |
733 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 734 | |
9b7c18a2 | 735 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
a891f0f8 | 736 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 737 | if (rc) |
f96637be | 738 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
739 | |
740 | cifs_small_buf_release(smb); | |
741 | ||
742 | return rc; | |
743 | } | |
744 | ||
1da177e4 | 745 | int |
58c45c58 | 746 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 747 | { |
1da177e4 LT |
748 | LOGOFF_ANDX_REQ *pSMB; |
749 | int rc = 0; | |
1da177e4 | 750 | |
f96637be | 751 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 752 | |
14fbf50d JL |
753 | /* |
754 | * BB: do we need to check validity of ses and server? They should | |
755 | * always be valid since we have an active reference. If not, that | |
756 | * should probably be a BUG() | |
757 | */ | |
758 | if (!ses || !ses->server) | |
3b795210 SF |
759 | return -EIO; |
760 | ||
d7b619cf | 761 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
762 | if (ses->need_reconnect) |
763 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
764 | already closed due to reconnect */ | |
1da177e4 LT |
765 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
766 | if (rc) { | |
d7b619cf | 767 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
768 | return rc; |
769 | } | |
770 | ||
88257360 | 771 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 772 | |
38d77c50 JL |
773 | if (ses->server->sign) |
774 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
775 | |
776 | pSMB->hdr.Uid = ses->Suid; | |
777 | ||
778 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 779 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 780 | cifs_small_buf_release(pSMB); |
3b795210 | 781 | session_already_dead: |
d7b619cf | 782 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
783 | |
784 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 785 | since server closed smb session, no sense reporting |
1da177e4 LT |
786 | error */ |
787 | if (rc == -EAGAIN) | |
788 | rc = 0; | |
789 | return rc; | |
790 | } | |
791 | ||
2d785a50 | 792 | int |
6d5786a3 PS |
793 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
794 | const char *fileName, __u16 type, | |
795 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
796 | { |
797 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
798 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
799 | struct unlink_psx_rq *pRqD; | |
800 | int name_len; | |
801 | int rc = 0; | |
802 | int bytes_returned = 0; | |
803 | __u16 params, param_offset, offset, byte_count; | |
804 | ||
f96637be | 805 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
806 | PsxDelete: |
807 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
808 | (void **) &pSMBr); | |
809 | if (rc) | |
810 | return rc; | |
811 | ||
812 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
813 | name_len = | |
acbbb76a SF |
814 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
815 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
816 | name_len++; /* trailing null */ |
817 | name_len *= 2; | |
818 | } else { /* BB add path length overrun check */ | |
819 | name_len = strnlen(fileName, PATH_MAX); | |
820 | name_len++; /* trailing null */ | |
821 | strncpy(pSMB->FileName, fileName, name_len); | |
822 | } | |
823 | ||
824 | params = 6 + name_len; | |
825 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
826 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
827 | pSMB->MaxSetupCount = 0; | |
828 | pSMB->Reserved = 0; | |
829 | pSMB->Flags = 0; | |
830 | pSMB->Timeout = 0; | |
831 | pSMB->Reserved2 = 0; | |
832 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
833 | InformationLevel) - 4; | |
834 | offset = param_offset + params; | |
835 | ||
836 | /* Setup pointer to Request Data (inode type) */ | |
837 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
838 | pRqD->type = cpu_to_le16(type); | |
839 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
840 | pSMB->DataOffset = cpu_to_le16(offset); | |
841 | pSMB->SetupCount = 1; | |
842 | pSMB->Reserved3 = 0; | |
843 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
844 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
845 | ||
846 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
847 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
848 | pSMB->ParameterCount = cpu_to_le16(params); | |
849 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
850 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
851 | pSMB->Reserved4 = 0; | |
be8e3b00 | 852 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
853 | pSMB->ByteCount = cpu_to_le16(byte_count); |
854 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
855 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 856 | if (rc) |
f96637be | 857 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
858 | cifs_buf_release(pSMB); |
859 | ||
44c58186 | 860 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
861 | |
862 | if (rc == -EAGAIN) | |
863 | goto PsxDelete; | |
864 | ||
865 | return rc; | |
866 | } | |
867 | ||
1da177e4 | 868 | int |
ed6875e0 PS |
869 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
870 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
871 | { |
872 | DELETE_FILE_REQ *pSMB = NULL; | |
873 | DELETE_FILE_RSP *pSMBr = NULL; | |
874 | int rc = 0; | |
875 | int bytes_returned; | |
876 | int name_len; | |
2baa2682 | 877 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
878 | |
879 | DelFileRetry: | |
880 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
881 | (void **) &pSMBr); | |
882 | if (rc) | |
883 | return rc; | |
884 | ||
885 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
886 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
887 | PATH_MAX, cifs_sb->local_nls, | |
888 | remap); | |
1da177e4 LT |
889 | name_len++; /* trailing null */ |
890 | name_len *= 2; | |
09d1db5c | 891 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 892 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 893 | name_len++; /* trailing null */ |
ed6875e0 | 894 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
895 | } |
896 | pSMB->SearchAttributes = | |
897 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
898 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 899 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
900 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
901 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
902 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 903 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 904 | if (rc) |
f96637be | 905 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
906 | |
907 | cifs_buf_release(pSMB); | |
908 | if (rc == -EAGAIN) | |
909 | goto DelFileRetry; | |
910 | ||
911 | return rc; | |
912 | } | |
913 | ||
914 | int | |
f958ca5d PS |
915 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
916 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
917 | { |
918 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
919 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
920 | int rc = 0; | |
921 | int bytes_returned; | |
922 | int name_len; | |
2baa2682 | 923 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 924 | |
f96637be | 925 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
926 | RmDirRetry: |
927 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
928 | (void **) &pSMBr); | |
929 | if (rc) | |
930 | return rc; | |
931 | ||
932 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
933 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
934 | PATH_MAX, cifs_sb->local_nls, | |
935 | remap); | |
1da177e4 LT |
936 | name_len++; /* trailing null */ |
937 | name_len *= 2; | |
09d1db5c | 938 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 939 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 940 | name_len++; /* trailing null */ |
f958ca5d | 941 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
942 | } |
943 | ||
944 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 945 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
946 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
947 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
948 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 949 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 950 | if (rc) |
f96637be | 951 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
952 | |
953 | cifs_buf_release(pSMB); | |
954 | if (rc == -EAGAIN) | |
955 | goto RmDirRetry; | |
956 | return rc; | |
957 | } | |
958 | ||
959 | int | |
f436720e PS |
960 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
961 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
962 | { |
963 | int rc = 0; | |
964 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
965 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
966 | int bytes_returned; | |
967 | int name_len; | |
2baa2682 | 968 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 969 | |
f96637be | 970 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
971 | MkDirRetry: |
972 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
973 | (void **) &pSMBr); | |
974 | if (rc) | |
975 | return rc; | |
976 | ||
977 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 978 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
979 | PATH_MAX, cifs_sb->local_nls, |
980 | remap); | |
1da177e4 LT |
981 | name_len++; /* trailing null */ |
982 | name_len *= 2; | |
09d1db5c | 983 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
984 | name_len = strnlen(name, PATH_MAX); |
985 | name_len++; /* trailing null */ | |
986 | strncpy(pSMB->DirName, name, name_len); | |
987 | } | |
988 | ||
989 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 990 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
991 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
992 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
993 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 994 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 995 | if (rc) |
f96637be | 996 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 997 | |
1da177e4 LT |
998 | cifs_buf_release(pSMB); |
999 | if (rc == -EAGAIN) | |
1000 | goto MkDirRetry; | |
1001 | return rc; | |
1002 | } | |
1003 | ||
2dd29d31 | 1004 | int |
6d5786a3 PS |
1005 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1006 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1007 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1008 | const char *name, const struct nls_table *nls_codepage, | |
1009 | int remap) | |
2dd29d31 SF |
1010 | { |
1011 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1012 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1013 | int name_len; | |
1014 | int rc = 0; | |
1015 | int bytes_returned = 0; | |
2dd29d31 | 1016 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1017 | OPEN_PSX_REQ *pdata; |
1018 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1019 | |
f96637be | 1020 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1021 | PsxCreat: |
1022 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1023 | (void **) &pSMBr); | |
1024 | if (rc) | |
1025 | return rc; | |
1026 | ||
1027 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1028 | name_len = | |
acbbb76a SF |
1029 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1030 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1031 | name_len++; /* trailing null */ |
1032 | name_len *= 2; | |
1033 | } else { /* BB improve the check for buffer overruns BB */ | |
1034 | name_len = strnlen(name, PATH_MAX); | |
1035 | name_len++; /* trailing null */ | |
1036 | strncpy(pSMB->FileName, name, name_len); | |
1037 | } | |
1038 | ||
1039 | params = 6 + name_len; | |
1040 | count = sizeof(OPEN_PSX_REQ); | |
1041 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1042 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1043 | pSMB->MaxSetupCount = 0; | |
1044 | pSMB->Reserved = 0; | |
1045 | pSMB->Flags = 0; | |
1046 | pSMB->Timeout = 0; | |
1047 | pSMB->Reserved2 = 0; | |
1048 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1049 | InformationLevel) - 4; |
2dd29d31 | 1050 | offset = param_offset + params; |
2dd29d31 | 1051 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1052 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1053 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1054 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1055 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1056 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1057 | pSMB->DataOffset = cpu_to_le16(offset); | |
1058 | pSMB->SetupCount = 1; | |
1059 | pSMB->Reserved3 = 0; | |
1060 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1061 | byte_count = 3 /* pad */ + params + count; | |
1062 | ||
1063 | pSMB->DataCount = cpu_to_le16(count); | |
1064 | pSMB->ParameterCount = cpu_to_le16(params); | |
1065 | pSMB->TotalDataCount = pSMB->DataCount; | |
1066 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1067 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1068 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1069 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1070 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1071 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1072 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1073 | if (rc) { | |
f96637be | 1074 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1075 | goto psx_create_err; |
1076 | } | |
1077 | ||
f96637be | 1078 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1079 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1080 | ||
820a803f | 1081 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1082 | rc = -EIO; /* bad smb */ |
1083 | goto psx_create_err; | |
1084 | } | |
1085 | ||
1086 | /* copy return information to pRetData */ | |
50c2f753 | 1087 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1088 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1089 | |
2dd29d31 | 1090 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1091 | if (netfid) |
2dd29d31 SF |
1092 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1093 | /* Let caller know file was created so we can set the mode. */ | |
1094 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1095 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1096 | *pOplock |= CIFS_CREATE_ACTION; |
1097 | /* check to make sure response data is there */ | |
8f2376ad CG |
1098 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1099 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1100 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1101 | } else { |
820a803f | 1102 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1103 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1104 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1105 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1106 | goto psx_create_err; |
1107 | } | |
50c2f753 | 1108 | memcpy((char *) pRetData, |
cbac3cba | 1109 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1110 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1111 | } |
2dd29d31 SF |
1112 | |
1113 | psx_create_err: | |
1114 | cifs_buf_release(pSMB); | |
1115 | ||
65bc98b0 | 1116 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1117 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1118 | else |
44c58186 | 1119 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1120 | |
1121 | if (rc == -EAGAIN) | |
1122 | goto PsxCreat; | |
1123 | ||
50c2f753 | 1124 | return rc; |
2dd29d31 SF |
1125 | } |
1126 | ||
a9d02ad4 SF |
1127 | static __u16 convert_disposition(int disposition) |
1128 | { | |
1129 | __u16 ofun = 0; | |
1130 | ||
1131 | switch (disposition) { | |
1132 | case FILE_SUPERSEDE: | |
1133 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1134 | break; | |
1135 | case FILE_OPEN: | |
1136 | ofun = SMBOPEN_OAPPEND; | |
1137 | break; | |
1138 | case FILE_CREATE: | |
1139 | ofun = SMBOPEN_OCREATE; | |
1140 | break; | |
1141 | case FILE_OPEN_IF: | |
1142 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1143 | break; | |
1144 | case FILE_OVERWRITE: | |
1145 | ofun = SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | case FILE_OVERWRITE_IF: | |
1148 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1149 | break; | |
1150 | default: | |
f96637be | 1151 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1152 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1153 | } | |
1154 | return ofun; | |
1155 | } | |
1156 | ||
35fc37d5 JL |
1157 | static int |
1158 | access_flags_to_smbopen_mode(const int access_flags) | |
1159 | { | |
1160 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1161 | ||
1162 | if (masked_flags == GENERIC_READ) | |
1163 | return SMBOPEN_READ; | |
1164 | else if (masked_flags == GENERIC_WRITE) | |
1165 | return SMBOPEN_WRITE; | |
1166 | ||
1167 | /* just go for read/write */ | |
1168 | return SMBOPEN_READWRITE; | |
1169 | } | |
1170 | ||
a9d02ad4 | 1171 | int |
6d5786a3 | 1172 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1173 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1174 | const int access_flags, const int create_options, __u16 *netfid, |
1175 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1176 | const struct nls_table *nls_codepage, int remap) |
1177 | { | |
1178 | int rc = -EACCES; | |
1179 | OPENX_REQ *pSMB = NULL; | |
1180 | OPENX_RSP *pSMBr = NULL; | |
1181 | int bytes_returned; | |
1182 | int name_len; | |
1183 | __u16 count; | |
1184 | ||
1185 | OldOpenRetry: | |
1186 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1187 | (void **) &pSMBr); | |
1188 | if (rc) | |
1189 | return rc; | |
1190 | ||
1191 | pSMB->AndXCommand = 0xFF; /* none */ | |
1192 | ||
1193 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1194 | count = 1; /* account for one byte pad to word boundary */ | |
1195 | name_len = | |
acbbb76a SF |
1196 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1197 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1198 | name_len++; /* trailing null */ |
1199 | name_len *= 2; | |
1200 | } else { /* BB improve check for buffer overruns BB */ | |
1201 | count = 0; /* no pad */ | |
1202 | name_len = strnlen(fileName, PATH_MAX); | |
1203 | name_len++; /* trailing null */ | |
1204 | strncpy(pSMB->fileName, fileName, name_len); | |
1205 | } | |
1206 | if (*pOplock & REQ_OPLOCK) | |
1207 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1208 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1209 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1210 | |
a9d02ad4 | 1211 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1212 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1213 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1214 | /* set file as system file if special file such | |
1215 | as fifo and server expecting SFU style and | |
1216 | no Unix extensions */ | |
1217 | ||
790fe579 SF |
1218 | if (create_options & CREATE_OPTION_SPECIAL) |
1219 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1220 | else /* BB FIXME BB */ |
1221 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1222 | |
67750fb9 JL |
1223 | if (create_options & CREATE_OPTION_READONLY) |
1224 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1225 | |
1226 | /* BB FIXME BB */ | |
50c2f753 SF |
1227 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1228 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1229 | /* BB FIXME END BB */ |
3e87d803 SF |
1230 | |
1231 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1232 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1233 | count += name_len; |
be8e3b00 | 1234 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1235 | |
1236 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1237 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1238 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1239 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1240 | if (rc) { |
f96637be | 1241 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1242 | } else { |
1243 | /* BB verify if wct == 15 */ | |
1244 | ||
582d21e5 | 1245 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1246 | |
1247 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1248 | /* Let caller know file was created so we can set the mode. */ | |
1249 | /* Do we care about the CreateAction in any other cases? */ | |
1250 | /* BB FIXME BB */ | |
790fe579 | 1251 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1252 | *pOplock |= CIFS_CREATE_ACTION; */ |
1253 | /* BB FIXME END */ | |
1254 | ||
790fe579 | 1255 | if (pfile_info) { |
a9d02ad4 SF |
1256 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1257 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1258 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1259 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1260 | pfile_info->Attributes = |
50c2f753 | 1261 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1262 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1263 | pfile_info->AllocationSize = |
1264 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1265 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1266 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1267 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1268 | } |
1269 | } | |
1270 | ||
1271 | cifs_buf_release(pSMB); | |
1272 | if (rc == -EAGAIN) | |
1273 | goto OldOpenRetry; | |
1274 | return rc; | |
1275 | } | |
1276 | ||
1da177e4 | 1277 | int |
d81b8a40 PS |
1278 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1279 | FILE_ALL_INFO *buf) | |
1da177e4 LT |
1280 | { |
1281 | int rc = -EACCES; | |
9bf4fa01 PS |
1282 | OPEN_REQ *req = NULL; |
1283 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1284 | int bytes_returned; |
1285 | int name_len; | |
1286 | __u16 count; | |
d81b8a40 PS |
1287 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1288 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1289 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1290 | const struct nls_table *nls = cifs_sb->local_nls; |
1291 | int create_options = oparms->create_options; | |
1292 | int desired_access = oparms->desired_access; | |
1293 | int disposition = oparms->disposition; | |
1294 | const char *path = oparms->path; | |
1da177e4 LT |
1295 | |
1296 | openRetry: | |
9bf4fa01 PS |
1297 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1298 | (void **)&rsp); | |
1da177e4 LT |
1299 | if (rc) |
1300 | return rc; | |
1301 | ||
9bf4fa01 PS |
1302 | /* no commands go after this */ |
1303 | req->AndXCommand = 0xFF; | |
1da177e4 | 1304 | |
9bf4fa01 PS |
1305 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1306 | /* account for one byte pad to word boundary */ | |
1307 | count = 1; | |
1308 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1309 | path, PATH_MAX, nls, remap); | |
1310 | /* trailing null */ | |
1311 | name_len++; | |
1da177e4 | 1312 | name_len *= 2; |
9bf4fa01 PS |
1313 | req->NameLength = cpu_to_le16(name_len); |
1314 | } else { | |
1315 | /* BB improve check for buffer overruns BB */ | |
1316 | /* no pad */ | |
1317 | count = 0; | |
1318 | name_len = strnlen(path, PATH_MAX); | |
1319 | /* trailing null */ | |
1320 | name_len++; | |
1321 | req->NameLength = cpu_to_le16(name_len); | |
1322 | strncpy(req->fileName, path, name_len); | |
1da177e4 | 1323 | } |
9bf4fa01 PS |
1324 | |
1325 | if (*oplock & REQ_OPLOCK) | |
1326 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1327 | else if (*oplock & REQ_BATCHOPLOCK) | |
1328 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1329 | ||
1330 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1331 | req->AllocationSize = 0; | |
1332 | ||
1333 | /* | |
1334 | * Set file as system file if special file such as fifo and server | |
1335 | * expecting SFU style and no Unix extensions. | |
1336 | */ | |
790fe579 | 1337 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1338 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1339 | else |
9bf4fa01 | 1340 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1341 | |
9bf4fa01 PS |
1342 | /* |
1343 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1344 | * sensitive checks for other servers such as Samba. | |
1345 | */ | |
1da177e4 | 1346 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1347 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1348 | |
67750fb9 | 1349 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1350 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1351 | ||
1352 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1353 | req->CreateDisposition = cpu_to_le32(disposition); | |
1354 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1355 | |
09d1db5c | 1356 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1357 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1358 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1359 | |
1360 | count += name_len; | |
9bf4fa01 | 1361 | inc_rfc1001_len(req, count); |
1da177e4 | 1362 | |
9bf4fa01 PS |
1363 | req->ByteCount = cpu_to_le16(count); |
1364 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1365 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1366 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1367 | if (rc) { |
f96637be | 1368 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1369 | cifs_buf_release(req); |
1370 | if (rc == -EAGAIN) | |
1371 | goto openRetry; | |
1372 | return rc; | |
1da177e4 | 1373 | } |
a5a2b489 | 1374 | |
9bf4fa01 PS |
1375 | /* 1 byte no need to le_to_cpu */ |
1376 | *oplock = rsp->OplockLevel; | |
1377 | /* cifs fid stays in le */ | |
d81b8a40 | 1378 | oparms->fid->netfid = rsp->Fid; |
9bf4fa01 PS |
1379 | |
1380 | /* Let caller know file was created so we can set the mode. */ | |
1381 | /* Do we care about the CreateAction in any other cases? */ | |
1382 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1383 | *oplock |= CIFS_CREATE_ACTION; | |
1384 | ||
1385 | if (buf) { | |
1386 | /* copy from CreationTime to Attributes */ | |
1387 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1388 | /* the file_info buf is endian converted by caller */ | |
1389 | buf->AllocationSize = rsp->AllocationSize; | |
1390 | buf->EndOfFile = rsp->EndOfFile; | |
1391 | buf->NumberOfLinks = cpu_to_le32(1); | |
1392 | buf->DeletePending = 0; | |
1393 | } | |
1394 | ||
1395 | cifs_buf_release(req); | |
1da177e4 LT |
1396 | return rc; |
1397 | } | |
1398 | ||
e28bc5b1 JL |
1399 | /* |
1400 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1401 | * current bigbuf. | |
1402 | */ | |
c42a6abe | 1403 | int |
350be257 | 1404 | cifs_discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1405 | { |
350be257 | 1406 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 | 1407 | int remaining = rfclen + 4 - server->total_read; |
e28bc5b1 JL |
1408 | |
1409 | while (remaining > 0) { | |
1410 | int length; | |
1411 | ||
1412 | length = cifs_read_from_socket(server, server->bigbuf, | |
1413 | min_t(unsigned int, remaining, | |
1887f601 | 1414 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1415 | if (length < 0) |
1416 | return length; | |
1417 | server->total_read += length; | |
1418 | remaining -= length; | |
1419 | } | |
1420 | ||
e28bc5b1 JL |
1421 | return 0; |
1422 | } | |
1423 | ||
6cc3b242 PS |
1424 | static int |
1425 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1426 | { | |
1427 | int length; | |
1428 | struct cifs_readdata *rdata = mid->callback_data; | |
1429 | ||
350be257 | 1430 | length = cifs_discard_remaining_data(server); |
6cc3b242 | 1431 | dequeue_mid(mid, rdata->result); |
350be257 PS |
1432 | mid->resp_buf = server->smallbuf; |
1433 | server->smallbuf = NULL; | |
6cc3b242 PS |
1434 | return length; |
1435 | } | |
1436 | ||
09a4707e | 1437 | int |
e28bc5b1 JL |
1438 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1439 | { | |
1440 | int length, len; | |
8d5ce4d2 | 1441 | unsigned int data_offset, data_len; |
e28bc5b1 | 1442 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1443 | char *buf = server->smallbuf; |
1444 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1445 | |
f96637be JP |
1446 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1447 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1448 | |
1449 | /* | |
1450 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1451 | * can if there's not enough data. At this point, we've read down to | |
1452 | * the Mid. | |
1453 | */ | |
eb378711 | 1454 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1455 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1456 | |
a6137305 AV |
1457 | length = cifs_read_from_socket(server, |
1458 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1459 | if (length < 0) |
1460 | return length; | |
1461 | server->total_read += length; | |
1462 | ||
6cc3b242 PS |
1463 | if (server->ops->is_status_pending && |
1464 | server->ops->is_status_pending(buf, server, 0)) { | |
350be257 | 1465 | cifs_discard_remaining_data(server); |
6cc3b242 PS |
1466 | return -1; |
1467 | } | |
1468 | ||
e28bc5b1 | 1469 | /* Was the SMB read successful? */ |
eb378711 | 1470 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1471 | if (rdata->result != 0) { |
f96637be JP |
1472 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1473 | __func__, rdata->result); | |
e28bc5b1 JL |
1474 | return cifs_readv_discard(server, mid); |
1475 | } | |
1476 | ||
1477 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1478 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1479 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1480 | __func__, server->total_read, | |
1481 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1482 | rdata->result = -EIO; |
1483 | return cifs_readv_discard(server, mid); | |
1484 | } | |
1485 | ||
eb378711 | 1486 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1487 | if (data_offset < server->total_read) { |
1488 | /* | |
1489 | * win2k8 sometimes sends an offset of 0 when the read | |
1490 | * is beyond the EOF. Treat it as if the data starts just after | |
1491 | * the header. | |
1492 | */ | |
f96637be JP |
1493 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1494 | __func__, data_offset); | |
e28bc5b1 JL |
1495 | data_offset = server->total_read; |
1496 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1497 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1498 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1499 | __func__, data_offset); | |
e28bc5b1 JL |
1500 | rdata->result = -EIO; |
1501 | return cifs_readv_discard(server, mid); | |
1502 | } | |
1503 | ||
f96637be JP |
1504 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1505 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1506 | |
1507 | len = data_offset - server->total_read; | |
1508 | if (len > 0) { | |
1509 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1510 | length = cifs_read_from_socket(server, |
1511 | buf + server->total_read, len); | |
e28bc5b1 JL |
1512 | if (length < 0) |
1513 | return length; | |
1514 | server->total_read += length; | |
1515 | } | |
1516 | ||
1517 | /* set up first iov for signature check */ | |
738f9de5 PS |
1518 | rdata->iov[0].iov_base = buf; |
1519 | rdata->iov[0].iov_len = 4; | |
1520 | rdata->iov[1].iov_base = buf + 4; | |
1521 | rdata->iov[1].iov_len = server->total_read - 4; | |
1522 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n", | |
1523 | rdata->iov[0].iov_base, server->total_read); | |
e28bc5b1 JL |
1524 | |
1525 | /* how much data is in the response? */ | |
eb378711 | 1526 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1527 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1528 | /* data_len is corrupt -- discard frame */ |
1529 | rdata->result = -EIO; | |
1530 | return cifs_readv_discard(server, mid); | |
1531 | } | |
1532 | ||
8321fec4 JL |
1533 | length = rdata->read_into_pages(server, rdata, data_len); |
1534 | if (length < 0) | |
1535 | return length; | |
e28bc5b1 | 1536 | |
8321fec4 | 1537 | server->total_read += length; |
e28bc5b1 | 1538 | |
f96637be JP |
1539 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1540 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1541 | |
1542 | /* discard anything left over */ | |
5ffef7bf | 1543 | if (server->total_read < buflen) |
e28bc5b1 JL |
1544 | return cifs_readv_discard(server, mid); |
1545 | ||
1546 | dequeue_mid(mid, false); | |
350be257 PS |
1547 | mid->resp_buf = server->smallbuf; |
1548 | server->smallbuf = NULL; | |
e28bc5b1 JL |
1549 | return length; |
1550 | } | |
1551 | ||
e28bc5b1 JL |
1552 | static void |
1553 | cifs_readv_callback(struct mid_q_entry *mid) | |
1554 | { | |
1555 | struct cifs_readdata *rdata = mid->callback_data; | |
1556 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1557 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1558 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1559 | .rq_nvec = 2, | |
8321fec4 JL |
1560 | .rq_pages = rdata->pages, |
1561 | .rq_npages = rdata->nr_pages, | |
1562 | .rq_pagesz = rdata->pagesz, | |
1563 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1564 | |
f96637be JP |
1565 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1566 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1567 | rdata->bytes); | |
e28bc5b1 | 1568 | |
7c9421e1 | 1569 | switch (mid->mid_state) { |
e28bc5b1 JL |
1570 | case MID_RESPONSE_RECEIVED: |
1571 | /* result already set, check signature */ | |
38d77c50 | 1572 | if (server->sign) { |
985e4ff0 SF |
1573 | int rc = 0; |
1574 | ||
bf5ea0e2 | 1575 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1576 | mid->sequence_number); |
985e4ff0 | 1577 | if (rc) |
f96637be JP |
1578 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1579 | rc); | |
e28bc5b1 JL |
1580 | } |
1581 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1582 | task_io_account_read(rdata->got_bytes); |
1583 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1584 | break; |
1585 | case MID_REQUEST_SUBMITTED: | |
1586 | case MID_RETRY_NEEDED: | |
1587 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1588 | if (server->sign && rdata->got_bytes) |
1589 | /* reset bytes number since we can not check a sign */ | |
1590 | rdata->got_bytes = 0; | |
1591 | /* FIXME: should this be counted toward the initiating task? */ | |
1592 | task_io_account_read(rdata->got_bytes); | |
1593 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1594 | break; |
1595 | default: | |
1596 | rdata->result = -EIO; | |
1597 | } | |
1598 | ||
da472fc8 | 1599 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1600 | DeleteMidQEntry(mid); |
a891f0f8 | 1601 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1602 | } |
1603 | ||
1604 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1605 | int | |
1606 | cifs_async_readv(struct cifs_readdata *rdata) | |
1607 | { | |
1608 | int rc; | |
1609 | READ_REQ *smb = NULL; | |
1610 | int wct; | |
1611 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1612 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1613 | .rq_nvec = 2 }; | |
e28bc5b1 | 1614 | |
f96637be JP |
1615 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1616 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1617 | |
1618 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1619 | wct = 12; | |
1620 | else { | |
1621 | wct = 10; /* old style read */ | |
1622 | if ((rdata->offset >> 32) > 0) { | |
1623 | /* can not handle this big offset for old */ | |
1624 | return -EIO; | |
1625 | } | |
1626 | } | |
1627 | ||
1628 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1629 | if (rc) | |
1630 | return rc; | |
1631 | ||
1632 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1633 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1634 | ||
1635 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1636 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1637 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1638 | if (wct == 12) | |
1639 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1640 | smb->Remaining = 0; | |
1641 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1642 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1643 | if (wct == 12) | |
1644 | smb->ByteCount = 0; | |
1645 | else { | |
1646 | /* old style read */ | |
1647 | struct smb_com_readx_req *smbr = | |
1648 | (struct smb_com_readx_req *)smb; | |
1649 | smbr->ByteCount = 0; | |
1650 | } | |
1651 | ||
1652 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1653 | rdata->iov[0].iov_base = smb; |
1654 | rdata->iov[0].iov_len = 4; | |
1655 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1656 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1657 | |
6993f74a | 1658 | kref_get(&rdata->refcount); |
fec344e3 | 1659 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
9b7c18a2 | 1660 | cifs_readv_callback, NULL, rdata, 0); |
e28bc5b1 JL |
1661 | |
1662 | if (rc == 0) | |
44c58186 | 1663 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1664 | else |
1665 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1666 | |
1667 | cifs_small_buf_release(smb); | |
1668 | return rc; | |
1669 | } | |
1670 | ||
1da177e4 | 1671 | int |
6d5786a3 PS |
1672 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1673 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1674 | { |
1675 | int rc = -EACCES; | |
1676 | READ_REQ *pSMB = NULL; | |
1677 | READ_RSP *pSMBr = NULL; | |
1678 | char *pReadData = NULL; | |
bfa0d75a | 1679 | int wct; |
ec637e3f SF |
1680 | int resp_buf_type = 0; |
1681 | struct kvec iov[1]; | |
da502f7d | 1682 | struct kvec rsp_iov; |
d4ffff1f PS |
1683 | __u32 pid = io_parms->pid; |
1684 | __u16 netfid = io_parms->netfid; | |
1685 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1686 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1687 | unsigned int count = io_parms->length; |
1da177e4 | 1688 | |
f96637be | 1689 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1690 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1691 | wct = 12; |
4c3130ef | 1692 | else { |
bfa0d75a | 1693 | wct = 10; /* old style read */ |
d4ffff1f | 1694 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1695 | /* can not handle this big offset for old */ |
1696 | return -EIO; | |
1697 | } | |
1698 | } | |
1da177e4 LT |
1699 | |
1700 | *nbytes = 0; | |
ec637e3f | 1701 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1702 | if (rc) |
1703 | return rc; | |
1704 | ||
d4ffff1f PS |
1705 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1706 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1707 | ||
1da177e4 LT |
1708 | /* tcon and ses pointer are checked in smb_init */ |
1709 | if (tcon->ses->server == NULL) | |
1710 | return -ECONNABORTED; | |
1711 | ||
ec637e3f | 1712 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1713 | pSMB->Fid = netfid; |
d4ffff1f | 1714 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1715 | if (wct == 12) |
d4ffff1f | 1716 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1717 | |
1da177e4 LT |
1718 | pSMB->Remaining = 0; |
1719 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1720 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1721 | if (wct == 12) |
bfa0d75a SF |
1722 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1723 | else { | |
1724 | /* old style read */ | |
50c2f753 | 1725 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1726 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1727 | pSMBW->ByteCount = 0; |
bfa0d75a | 1728 | } |
ec637e3f SF |
1729 | |
1730 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1731 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1732 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1733 | CIFS_LOG_ERROR, &rsp_iov); | |
1734 | cifs_small_buf_release(pSMB); | |
44c58186 | 1735 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1736 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1737 | if (rc) { |
f96637be | 1738 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1739 | } else { |
1740 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1741 | data_length = data_length << 16; | |
1742 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1743 | *nbytes = data_length; | |
1744 | ||
1745 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1746 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1747 | || (data_length > count)) { |
f96637be | 1748 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1749 | data_length, count); |
1da177e4 LT |
1750 | rc = -EIO; |
1751 | *nbytes = 0; | |
1752 | } else { | |
ec637e3f | 1753 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1754 | le16_to_cpu(pSMBr->DataOffset); |
1755 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1756 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1757 | rc = -EFAULT; |
26f57364 | 1758 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1759 | if (*buf) |
50c2f753 | 1760 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1761 | } |
1762 | } | |
1da177e4 | 1763 | |
790fe579 | 1764 | if (*buf) { |
da502f7d | 1765 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1766 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1767 | /* return buffer to caller to free */ |
da502f7d | 1768 | *buf = rsp_iov.iov_base; |
790fe579 | 1769 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1770 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1771 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1772 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1773 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1774 | |
1775 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1776 | since file handle passed in no longer valid */ |
1777 | return rc; | |
1778 | } | |
1779 | ||
ec637e3f | 1780 | |
1da177e4 | 1781 | int |
6d5786a3 | 1782 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1783 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1784 | { |
1785 | int rc = -EACCES; | |
1786 | WRITE_REQ *pSMB = NULL; | |
1787 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1788 | int bytes_returned, wct; |
1da177e4 LT |
1789 | __u32 bytes_sent; |
1790 | __u16 byte_count; | |
fa2989f4 PS |
1791 | __u32 pid = io_parms->pid; |
1792 | __u16 netfid = io_parms->netfid; | |
1793 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1794 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1795 | unsigned int count = io_parms->length; |
1da177e4 | 1796 | |
a24e2d7d SF |
1797 | *nbytes = 0; |
1798 | ||
f96637be | 1799 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1800 | if (tcon->ses == NULL) |
1c955187 SF |
1801 | return -ECONNABORTED; |
1802 | ||
790fe579 | 1803 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1804 | wct = 14; |
4c3130ef | 1805 | else { |
1c955187 | 1806 | wct = 12; |
4c3130ef SF |
1807 | if ((offset >> 32) > 0) { |
1808 | /* can not handle big offset for old srv */ | |
1809 | return -EIO; | |
1810 | } | |
1811 | } | |
1c955187 SF |
1812 | |
1813 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1814 | (void **) &pSMBr); |
1815 | if (rc) | |
1816 | return rc; | |
fa2989f4 PS |
1817 | |
1818 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1819 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1820 | ||
1da177e4 LT |
1821 | /* tcon and ses pointer are checked in smb_init */ |
1822 | if (tcon->ses->server == NULL) | |
1823 | return -ECONNABORTED; | |
1824 | ||
1825 | pSMB->AndXCommand = 0xFF; /* none */ | |
1826 | pSMB->Fid = netfid; | |
1827 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1828 | if (wct == 14) |
1c955187 | 1829 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1830 | |
1da177e4 LT |
1831 | pSMB->Reserved = 0xFFFFFFFF; |
1832 | pSMB->WriteMode = 0; | |
1833 | pSMB->Remaining = 0; | |
1834 | ||
50c2f753 | 1835 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1836 | can send more if LARGE_WRITE_X capability returned by the server and if |
1837 | our buffer is big enough or if we convert to iovecs on socket writes | |
1838 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1839 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1840 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1841 | } else { | |
1842 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1843 | & ~0xFF; | |
1844 | } | |
1845 | ||
1846 | if (bytes_sent > count) | |
1847 | bytes_sent = count; | |
1848 | pSMB->DataOffset = | |
50c2f753 | 1849 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1850 | if (buf) |
61e74801 | 1851 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1852 | else if (count != 0) { |
1da177e4 LT |
1853 | /* No buffer */ |
1854 | cifs_buf_release(pSMB); | |
1855 | return -EINVAL; | |
e30dcf3a | 1856 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1857 | if (wct == 14) |
e30dcf3a | 1858 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1859 | else /* wct == 12 */ |
e30dcf3a | 1860 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1861 | |
1da177e4 LT |
1862 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1863 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1864 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1865 | |
790fe579 | 1866 | if (wct == 14) |
1c955187 | 1867 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1868 | else { /* old style write has byte count 4 bytes earlier |
1869 | so 4 bytes pad */ | |
1870 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1871 | (struct smb_com_writex_req *)pSMB; |
1872 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1873 | } | |
1da177e4 LT |
1874 | |
1875 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1876 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1877 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1878 | if (rc) { |
f96637be | 1879 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1880 | } else { |
1881 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1882 | *nbytes = (*nbytes) << 16; | |
1883 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1884 | |
1885 | /* | |
1886 | * Mask off high 16 bits when bytes written as returned by the | |
1887 | * server is greater than bytes requested by the client. Some | |
1888 | * OS/2 servers are known to set incorrect CountHigh values. | |
1889 | */ | |
1890 | if (*nbytes > count) | |
1891 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1892 | } |
1893 | ||
1894 | cifs_buf_release(pSMB); | |
1895 | ||
50c2f753 | 1896 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1897 | since file handle passed in no longer valid */ |
1898 | ||
1899 | return rc; | |
1900 | } | |
1901 | ||
c28c89fc JL |
1902 | void |
1903 | cifs_writedata_release(struct kref *refcount) | |
1904 | { | |
1905 | struct cifs_writedata *wdata = container_of(refcount, | |
1906 | struct cifs_writedata, refcount); | |
1907 | ||
1908 | if (wdata->cfile) | |
1909 | cifsFileInfo_put(wdata->cfile); | |
1910 | ||
1911 | kfree(wdata); | |
1912 | } | |
1913 | ||
1914 | /* | |
1915 | * Write failed with a retryable error. Resend the write request. It's also | |
1916 | * possible that the page was redirtied so re-clean the page. | |
1917 | */ | |
1918 | static void | |
1919 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1920 | { | |
7f6c5008 | 1921 | int i, rc = 0; |
2b0143b5 | 1922 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 1923 | struct TCP_Server_Info *server; |
7f6c5008 | 1924 | unsigned int rest_len; |
c28c89fc | 1925 | |
7f6c5008 PS |
1926 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1927 | i = 0; | |
1928 | rest_len = wdata->bytes; | |
c28c89fc | 1929 | do { |
7f6c5008 PS |
1930 | struct cifs_writedata *wdata2; |
1931 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
1932 | ||
1933 | wsize = server->ops->wp_retry_size(inode); | |
1934 | if (wsize < rest_len) { | |
09cbfeaf | 1935 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
1936 | if (!nr_pages) { |
1937 | rc = -ENOTSUPP; | |
1938 | break; | |
1939 | } | |
09cbfeaf KS |
1940 | cur_len = nr_pages * PAGE_SIZE; |
1941 | tailsz = PAGE_SIZE; | |
7f6c5008 | 1942 | } else { |
09cbfeaf | 1943 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 1944 | cur_len = rest_len; |
09cbfeaf | 1945 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 1946 | } |
c28c89fc | 1947 | |
7f6c5008 PS |
1948 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
1949 | if (!wdata2) { | |
1950 | rc = -ENOMEM; | |
1951 | break; | |
c51bb0ea | 1952 | } |
7f6c5008 PS |
1953 | |
1954 | for (j = 0; j < nr_pages; j++) { | |
1955 | wdata2->pages[j] = wdata->pages[i + j]; | |
1956 | lock_page(wdata2->pages[j]); | |
1957 | clear_page_dirty_for_io(wdata2->pages[j]); | |
1958 | } | |
1959 | ||
1960 | wdata2->sync_mode = wdata->sync_mode; | |
1961 | wdata2->nr_pages = nr_pages; | |
1962 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 1963 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
1964 | wdata2->tailsz = tailsz; |
1965 | wdata2->bytes = cur_len; | |
1966 | ||
1967 | wdata2->cfile = find_writable_file(CIFS_I(inode), false); | |
1968 | if (!wdata2->cfile) { | |
1969 | cifs_dbg(VFS, "No writable handles for inode\n"); | |
1970 | rc = -EBADF; | |
1971 | break; | |
1972 | } | |
1973 | wdata2->pid = wdata2->cfile->pid; | |
1974 | rc = server->ops->async_writev(wdata2, cifs_writedata_release); | |
1975 | ||
1976 | for (j = 0; j < nr_pages; j++) { | |
1977 | unlock_page(wdata2->pages[j]); | |
1978 | if (rc != 0 && rc != -EAGAIN) { | |
1979 | SetPageError(wdata2->pages[j]); | |
1980 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 1981 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
1982 | } |
1983 | } | |
1984 | ||
1985 | if (rc) { | |
1986 | kref_put(&wdata2->refcount, cifs_writedata_release); | |
1987 | if (rc == -EAGAIN) | |
1988 | continue; | |
1989 | break; | |
1990 | } | |
1991 | ||
1992 | rest_len -= cur_len; | |
1993 | i += nr_pages; | |
1994 | } while (i < wdata->nr_pages); | |
c28c89fc JL |
1995 | |
1996 | mapping_set_error(inode->i_mapping, rc); | |
1997 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1998 | } | |
1999 | ||
c2e87640 | 2000 | void |
c28c89fc JL |
2001 | cifs_writev_complete(struct work_struct *work) |
2002 | { | |
2003 | struct cifs_writedata *wdata = container_of(work, | |
2004 | struct cifs_writedata, work); | |
2b0143b5 | 2005 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
2006 | int i = 0; |
2007 | ||
2008 | if (wdata->result == 0) { | |
597b027f | 2009 | spin_lock(&inode->i_lock); |
c28c89fc | 2010 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2011 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2012 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2013 | wdata->bytes); | |
2014 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2015 | return cifs_writev_requeue(wdata); | |
2016 | ||
2017 | for (i = 0; i < wdata->nr_pages; i++) { | |
2018 | struct page *page = wdata->pages[i]; | |
2019 | if (wdata->result == -EAGAIN) | |
2020 | __set_page_dirty_nobuffers(page); | |
2021 | else if (wdata->result < 0) | |
2022 | SetPageError(page); | |
2023 | end_page_writeback(page); | |
09cbfeaf | 2024 | put_page(page); |
c28c89fc JL |
2025 | } |
2026 | if (wdata->result != -EAGAIN) | |
2027 | mapping_set_error(inode->i_mapping, wdata->result); | |
2028 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2029 | } | |
2030 | ||
2031 | struct cifs_writedata * | |
c2e87640 | 2032 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
2033 | { |
2034 | struct cifs_writedata *wdata; | |
2035 | ||
c28c89fc JL |
2036 | /* writedata + number of page pointers */ |
2037 | wdata = kzalloc(sizeof(*wdata) + | |
26c8f0d6 | 2038 | sizeof(struct page *) * nr_pages, GFP_NOFS); |
c28c89fc | 2039 | if (wdata != NULL) { |
c28c89fc | 2040 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2041 | INIT_LIST_HEAD(&wdata->list); |
2042 | init_completion(&wdata->done); | |
2043 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2044 | } |
2045 | return wdata; | |
2046 | } | |
2047 | ||
2048 | /* | |
7c9421e1 | 2049 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2050 | * workqueue completion task. |
2051 | */ | |
2052 | static void | |
2053 | cifs_writev_callback(struct mid_q_entry *mid) | |
2054 | { | |
2055 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2056 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2057 | unsigned int written; |
2058 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2059 | ||
7c9421e1 | 2060 | switch (mid->mid_state) { |
c28c89fc JL |
2061 | case MID_RESPONSE_RECEIVED: |
2062 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2063 | if (wdata->result != 0) | |
2064 | break; | |
2065 | ||
2066 | written = le16_to_cpu(smb->CountHigh); | |
2067 | written <<= 16; | |
2068 | written += le16_to_cpu(smb->Count); | |
2069 | /* | |
2070 | * Mask off high 16 bits when bytes written as returned | |
2071 | * by the server is greater than bytes requested by the | |
2072 | * client. OS/2 servers are known to set incorrect | |
2073 | * CountHigh values. | |
2074 | */ | |
2075 | if (written > wdata->bytes) | |
2076 | written &= 0xFFFF; | |
2077 | ||
2078 | if (written < wdata->bytes) | |
2079 | wdata->result = -ENOSPC; | |
2080 | else | |
2081 | wdata->bytes = written; | |
2082 | break; | |
2083 | case MID_REQUEST_SUBMITTED: | |
2084 | case MID_RETRY_NEEDED: | |
2085 | wdata->result = -EAGAIN; | |
2086 | break; | |
2087 | default: | |
2088 | wdata->result = -EIO; | |
2089 | break; | |
2090 | } | |
2091 | ||
da472fc8 | 2092 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2093 | DeleteMidQEntry(mid); |
a891f0f8 | 2094 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2095 | } |
2096 | ||
2097 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2098 | int | |
4a5c80d7 SF |
2099 | cifs_async_writev(struct cifs_writedata *wdata, |
2100 | void (*release)(struct kref *kref)) | |
c28c89fc | 2101 | { |
eddb079d | 2102 | int rc = -EACCES; |
c28c89fc JL |
2103 | WRITE_REQ *smb = NULL; |
2104 | int wct; | |
96daf2b0 | 2105 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 2106 | struct kvec iov[2]; |
fec344e3 | 2107 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2108 | |
2109 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2110 | wct = 14; | |
2111 | } else { | |
2112 | wct = 12; | |
2113 | if (wdata->offset >> 32 > 0) { | |
2114 | /* can not handle big offset for old srv */ | |
2115 | return -EIO; | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2120 | if (rc) | |
2121 | goto async_writev_out; | |
2122 | ||
fe5f5d2e JL |
2123 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2124 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2125 | |
c28c89fc | 2126 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2127 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2128 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2129 | if (wct == 14) | |
2130 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2131 | smb->Reserved = 0xFFFFFFFF; | |
2132 | smb->WriteMode = 0; | |
2133 | smb->Remaining = 0; | |
2134 | ||
2135 | smb->DataOffset = | |
2136 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2137 | ||
2138 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
2139 | iov[0].iov_len = 4; |
2140 | iov[0].iov_base = smb; | |
2141 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
2142 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 2143 | |
738f9de5 PS |
2144 | rqst.rq_iov = iov; |
2145 | rqst.rq_nvec = 2; | |
eddb079d JL |
2146 | rqst.rq_pages = wdata->pages; |
2147 | rqst.rq_npages = wdata->nr_pages; | |
2148 | rqst.rq_pagesz = wdata->pagesz; | |
2149 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2150 | |
f96637be JP |
2151 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2152 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2153 | |
2154 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2155 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2156 | ||
2157 | if (wct == 14) { | |
2158 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2159 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2160 | } else { | |
2161 | /* wct == 12 */ | |
2162 | struct smb_com_writex_req *smbw = | |
2163 | (struct smb_com_writex_req *)smb; | |
2164 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2165 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 2166 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2167 | } |
2168 | ||
2169 | kref_get(&wdata->refcount); | |
fec344e3 | 2170 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
9b7c18a2 | 2171 | cifs_writev_callback, NULL, wdata, 0); |
c28c89fc JL |
2172 | |
2173 | if (rc == 0) | |
44c58186 | 2174 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2175 | else |
4a5c80d7 | 2176 | kref_put(&wdata->refcount, release); |
c28c89fc | 2177 | |
c28c89fc JL |
2178 | async_writev_out: |
2179 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2180 | return rc; |
2181 | } | |
2182 | ||
d6e04ae6 | 2183 | int |
6d5786a3 | 2184 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2185 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2186 | { |
2187 | int rc = -EACCES; | |
2188 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2189 | int wct; |
d6e04ae6 | 2190 | int smb_hdr_len; |
ec637e3f | 2191 | int resp_buf_type = 0; |
fa2989f4 PS |
2192 | __u32 pid = io_parms->pid; |
2193 | __u16 netfid = io_parms->netfid; | |
2194 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2195 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2196 | unsigned int count = io_parms->length; |
da502f7d | 2197 | struct kvec rsp_iov; |
1da177e4 | 2198 | |
fbec9ab9 JL |
2199 | *nbytes = 0; |
2200 | ||
f96637be | 2201 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2202 | |
4c3130ef | 2203 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2204 | wct = 14; |
4c3130ef | 2205 | } else { |
8cc64c6e | 2206 | wct = 12; |
4c3130ef SF |
2207 | if ((offset >> 32) > 0) { |
2208 | /* can not handle big offset for old srv */ | |
2209 | return -EIO; | |
2210 | } | |
2211 | } | |
8cc64c6e | 2212 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2213 | if (rc) |
2214 | return rc; | |
fa2989f4 PS |
2215 | |
2216 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2217 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2218 | ||
1da177e4 LT |
2219 | /* tcon and ses pointer are checked in smb_init */ |
2220 | if (tcon->ses->server == NULL) | |
2221 | return -ECONNABORTED; | |
2222 | ||
d6e04ae6 | 2223 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2224 | pSMB->Fid = netfid; |
2225 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2226 | if (wct == 14) |
8cc64c6e | 2227 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2228 | pSMB->Reserved = 0xFFFFFFFF; |
2229 | pSMB->WriteMode = 0; | |
2230 | pSMB->Remaining = 0; | |
d6e04ae6 | 2231 | |
1da177e4 | 2232 | pSMB->DataOffset = |
50c2f753 | 2233 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2234 | |
3e84469d SF |
2235 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2236 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2237 | /* header + 1 byte pad */ |
2238 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2239 | if (wct == 14) |
be8e3b00 | 2240 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2241 | else /* wct == 12 */ |
be8e3b00 | 2242 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2243 | if (wct == 14) |
8cc64c6e SF |
2244 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2245 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2246 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2247 | (struct smb_com_writex_req *)pSMB; |
2248 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2249 | } | |
3e84469d | 2250 | iov[0].iov_base = pSMB; |
790fe579 | 2251 | if (wct == 14) |
ec637e3f SF |
2252 | iov[0].iov_len = smb_hdr_len + 4; |
2253 | else /* wct == 12 pad bigger by four bytes */ | |
2254 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2255 | |
da502f7d PS |
2256 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
2257 | &rsp_iov); | |
2258 | cifs_small_buf_release(pSMB); | |
44c58186 | 2259 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2260 | if (rc) { |
f96637be | 2261 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2262 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2263 | /* presumably this can not happen, but best to be safe */ |
2264 | rc = -EIO; | |
d6e04ae6 | 2265 | } else { |
da502f7d | 2266 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
2267 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2268 | *nbytes = (*nbytes) << 16; | |
2269 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2270 | |
2271 | /* | |
2272 | * Mask off high 16 bits when bytes written as returned by the | |
2273 | * server is greater than bytes requested by the client. OS/2 | |
2274 | * servers are known to set incorrect CountHigh values. | |
2275 | */ | |
2276 | if (*nbytes > count) | |
2277 | *nbytes &= 0xFFFF; | |
50c2f753 | 2278 | } |
1da177e4 | 2279 | |
da502f7d | 2280 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 2281 | |
50c2f753 | 2282 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2283 | since file handle passed in no longer valid */ |
2284 | ||
2285 | return rc; | |
2286 | } | |
d6e04ae6 | 2287 | |
6d5786a3 PS |
2288 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2289 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2290 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2291 | { | |
2292 | int rc = 0; | |
2293 | LOCK_REQ *pSMB = NULL; | |
2294 | struct kvec iov[2]; | |
da502f7d | 2295 | struct kvec rsp_iov; |
9ee305b7 PS |
2296 | int resp_buf_type; |
2297 | __u16 count; | |
2298 | ||
f96637be JP |
2299 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2300 | num_lock, num_unlock); | |
9ee305b7 PS |
2301 | |
2302 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2303 | if (rc) | |
2304 | return rc; | |
2305 | ||
2306 | pSMB->Timeout = 0; | |
2307 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2308 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2309 | pSMB->LockType = lock_type; | |
2310 | pSMB->AndXCommand = 0xFF; /* none */ | |
2311 | pSMB->Fid = netfid; /* netfid stays le */ | |
2312 | ||
2313 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2314 | inc_rfc1001_len(pSMB, count); | |
2315 | pSMB->ByteCount = cpu_to_le16(count); | |
2316 | ||
2317 | iov[0].iov_base = (char *)pSMB; | |
2318 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2319 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2320 | iov[1].iov_base = (char *)buf; | |
2321 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2322 | ||
44c58186 | 2323 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
da502f7d PS |
2324 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP, |
2325 | &rsp_iov); | |
2326 | cifs_small_buf_release(pSMB); | |
9ee305b7 | 2327 | if (rc) |
f96637be | 2328 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2329 | |
2330 | return rc; | |
2331 | } | |
d6e04ae6 | 2332 | |
1da177e4 | 2333 | int |
6d5786a3 | 2334 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2335 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2336 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2337 | const __u32 numLock, const __u8 lockType, |
2338 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2339 | { |
2340 | int rc = 0; | |
2341 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2342 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2343 | int bytes_returned; |
a891f0f8 | 2344 | int flags = 0; |
1da177e4 LT |
2345 | __u16 count; |
2346 | ||
f96637be JP |
2347 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2348 | (int)waitFlag, numLock); | |
46810cbf SF |
2349 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2350 | ||
1da177e4 LT |
2351 | if (rc) |
2352 | return rc; | |
2353 | ||
790fe579 | 2354 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2355 | /* no response expected */ |
2356 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2357 | pSMB->Timeout = 0; |
4b18f2a9 | 2358 | } else if (waitFlag) { |
a891f0f8 | 2359 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2360 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2361 | } else { | |
2362 | pSMB->Timeout = 0; | |
2363 | } | |
2364 | ||
2365 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2366 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2367 | pSMB->LockType = lockType; | |
12fed00d | 2368 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2369 | pSMB->AndXCommand = 0xFF; /* none */ |
2370 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2371 | ||
790fe579 | 2372 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2373 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2374 | /* BB where to store pid high? */ |
2375 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2376 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2377 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2378 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2379 | count = sizeof(LOCKING_ANDX_RANGE); | |
2380 | } else { | |
2381 | /* oplock break */ | |
2382 | count = 0; | |
2383 | } | |
be8e3b00 | 2384 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2385 | pSMB->ByteCount = cpu_to_le16(count); |
2386 | ||
da502f7d | 2387 | if (waitFlag) |
7ee1af76 | 2388 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 2389 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 2390 | else |
a891f0f8 | 2391 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 2392 | cifs_small_buf_release(pSMB); |
44c58186 | 2393 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2394 | if (rc) |
f96637be | 2395 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2396 | |
50c2f753 | 2397 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2398 | since file handle passed in no longer valid */ |
2399 | return rc; | |
2400 | } | |
2401 | ||
08547b03 | 2402 | int |
6d5786a3 | 2403 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2404 | const __u16 smb_file_id, const __u32 netpid, |
2405 | const loff_t start_offset, const __u64 len, | |
2406 | struct file_lock *pLockData, const __u16 lock_type, | |
2407 | const bool waitFlag) | |
08547b03 SF |
2408 | { |
2409 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2410 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2411 | struct cifs_posix_lock *parm_data; |
2412 | int rc = 0; | |
3a5ff61c | 2413 | int timeout = 0; |
08547b03 | 2414 | int bytes_returned = 0; |
133672ef | 2415 | int resp_buf_type = 0; |
08547b03 | 2416 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2417 | struct kvec iov[1]; |
da502f7d | 2418 | struct kvec rsp_iov; |
08547b03 | 2419 | |
f96637be | 2420 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2421 | |
08547b03 SF |
2422 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2423 | ||
2424 | if (rc) | |
2425 | return rc; | |
2426 | ||
2427 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2428 | ||
50c2f753 | 2429 | params = 6; |
08547b03 SF |
2430 | pSMB->MaxSetupCount = 0; |
2431 | pSMB->Reserved = 0; | |
2432 | pSMB->Flags = 0; | |
08547b03 SF |
2433 | pSMB->Reserved2 = 0; |
2434 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2435 | offset = param_offset + params; | |
2436 | ||
08547b03 SF |
2437 | count = sizeof(struct cifs_posix_lock); |
2438 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2439 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2440 | pSMB->SetupCount = 1; |
2441 | pSMB->Reserved3 = 0; | |
c5fd363d | 2442 | if (pLockData) |
08547b03 SF |
2443 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2444 | else | |
2445 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2446 | byte_count = 3 /* pad */ + params + count; | |
2447 | pSMB->DataCount = cpu_to_le16(count); | |
2448 | pSMB->ParameterCount = cpu_to_le16(params); | |
2449 | pSMB->TotalDataCount = pSMB->DataCount; | |
2450 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2451 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2452 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2453 | (((char *) &pSMB->hdr.Protocol) + offset); |
2454 | ||
2455 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2456 | if (waitFlag) { |
133672ef | 2457 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2458 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2459 | pSMB->Timeout = cpu_to_le32(-1); |
2460 | } else | |
2461 | pSMB->Timeout = 0; | |
2462 | ||
4f6bcec9 | 2463 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2464 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2465 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2466 | |
2467 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2468 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2469 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2470 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2471 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2472 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2473 | if (waitFlag) { |
2474 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2475 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2476 | } else { | |
133672ef | 2477 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2478 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2479 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2480 | &resp_buf_type, timeout, &rsp_iov); |
2481 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2482 | } |
da502f7d | 2483 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2484 | |
08547b03 | 2485 | if (rc) { |
f96637be | 2486 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2487 | } else if (pLockData) { |
fc94cdb9 SF |
2488 | /* lock structure can be returned on get */ |
2489 | __u16 data_offset; | |
2490 | __u16 data_count; | |
2491 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2492 | ||
820a803f | 2493 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2494 | rc = -EIO; /* bad smb */ |
2495 | goto plk_err_exit; | |
2496 | } | |
fc94cdb9 SF |
2497 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2498 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2499 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2500 | rc = -EIO; |
2501 | goto plk_err_exit; | |
2502 | } | |
2503 | parm_data = (struct cifs_posix_lock *) | |
2504 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2505 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2506 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2507 | else { |
2508 | if (parm_data->lock_type == | |
bc09d141 | 2509 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2510 | pLockData->fl_type = F_RDLCK; |
2511 | else if (parm_data->lock_type == | |
bc09d141 | 2512 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2513 | pLockData->fl_type = F_WRLCK; |
2514 | ||
5443d130 SF |
2515 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2516 | pLockData->fl_end = pLockData->fl_start + | |
2517 | le64_to_cpu(parm_data->length) - 1; | |
2518 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2519 | } |
08547b03 | 2520 | } |
50c2f753 | 2521 | |
fc94cdb9 | 2522 | plk_err_exit: |
da502f7d | 2523 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2524 | |
08547b03 SF |
2525 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2526 | since file handle passed in no longer valid */ | |
2527 | ||
2528 | return rc; | |
2529 | } | |
2530 | ||
2531 | ||
1da177e4 | 2532 | int |
6d5786a3 | 2533 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2534 | { |
2535 | int rc = 0; | |
2536 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2537 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2538 | |
2539 | /* do not retry on dead session on close */ | |
2540 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2541 | if (rc == -EAGAIN) |
1da177e4 LT |
2542 | return 0; |
2543 | if (rc) | |
2544 | return rc; | |
2545 | ||
1da177e4 | 2546 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2547 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2548 | pSMB->ByteCount = 0; |
792af7b0 | 2549 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2550 | cifs_small_buf_release(pSMB); |
44c58186 | 2551 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2552 | if (rc) { |
790fe579 | 2553 | if (rc != -EINTR) { |
1da177e4 | 2554 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2555 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2556 | } |
2557 | } | |
2558 | ||
1da177e4 | 2559 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2560 | if (rc == -EAGAIN) |
1da177e4 LT |
2561 | rc = 0; |
2562 | ||
2563 | return rc; | |
2564 | } | |
2565 | ||
b298f223 | 2566 | int |
6d5786a3 | 2567 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2568 | { |
2569 | int rc = 0; | |
2570 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2571 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2572 | |
2573 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2574 | if (rc) | |
2575 | return rc; | |
2576 | ||
2577 | pSMB->FileID = (__u16) smb_file_id; | |
2578 | pSMB->ByteCount = 0; | |
792af7b0 | 2579 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2580 | cifs_small_buf_release(pSMB); |
44c58186 | 2581 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2582 | if (rc) |
f96637be | 2583 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2584 | |
2585 | return rc; | |
2586 | } | |
2587 | ||
1da177e4 | 2588 | int |
6d5786a3 | 2589 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2590 | const char *from_name, const char *to_name, |
2591 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2592 | { |
2593 | int rc = 0; | |
2594 | RENAME_REQ *pSMB = NULL; | |
2595 | RENAME_RSP *pSMBr = NULL; | |
2596 | int bytes_returned; | |
2597 | int name_len, name_len2; | |
2598 | __u16 count; | |
2baa2682 | 2599 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2600 | |
f96637be | 2601 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2602 | renameRetry: |
2603 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2604 | (void **) &pSMBr); | |
2605 | if (rc) | |
2606 | return rc; | |
2607 | ||
2608 | pSMB->BufferFormat = 0x04; | |
2609 | pSMB->SearchAttributes = | |
2610 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2611 | ATTR_DIRECTORY); | |
2612 | ||
2613 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2614 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2615 | from_name, PATH_MAX, | |
2616 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2617 | name_len++; /* trailing null */ |
2618 | name_len *= 2; | |
2619 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2620 | /* protocol requires ASCII signature byte on Unicode string */ | |
2621 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2622 | name_len2 = | |
acbbb76a | 2623 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2624 | to_name, PATH_MAX, cifs_sb->local_nls, |
2625 | remap); | |
1da177e4 LT |
2626 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2627 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2628 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2629 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2630 | name_len++; /* trailing null */ |
8ceb9843 PS |
2631 | strncpy(pSMB->OldFileName, from_name, name_len); |
2632 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2633 | name_len2++; /* trailing null */ |
2634 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2635 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2636 | name_len2++; /* trailing null */ |
2637 | name_len2++; /* signature byte */ | |
2638 | } | |
2639 | ||
2640 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2641 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2642 | pSMB->ByteCount = cpu_to_le16(count); |
2643 | ||
2644 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2645 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2646 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2647 | if (rc) |
f96637be | 2648 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2649 | |
1da177e4 LT |
2650 | cifs_buf_release(pSMB); |
2651 | ||
2652 | if (rc == -EAGAIN) | |
2653 | goto renameRetry; | |
2654 | ||
2655 | return rc; | |
2656 | } | |
2657 | ||
6d5786a3 | 2658 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2659 | int netfid, const char *target_name, |
50c2f753 | 2660 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2661 | { |
2662 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2663 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2664 | struct set_file_rename *rename_info; |
1da177e4 LT |
2665 | char *data_offset; |
2666 | char dummy_string[30]; | |
2667 | int rc = 0; | |
2668 | int bytes_returned = 0; | |
2669 | int len_of_str; | |
2670 | __u16 params, param_offset, offset, count, byte_count; | |
2671 | ||
f96637be | 2672 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2673 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2674 | (void **) &pSMBr); | |
2675 | if (rc) | |
2676 | return rc; | |
2677 | ||
2678 | params = 6; | |
2679 | pSMB->MaxSetupCount = 0; | |
2680 | pSMB->Reserved = 0; | |
2681 | pSMB->Flags = 0; | |
2682 | pSMB->Timeout = 0; | |
2683 | pSMB->Reserved2 = 0; | |
2684 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2685 | offset = param_offset + params; | |
2686 | ||
2687 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2688 | rename_info = (struct set_file_rename *) data_offset; | |
2689 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2690 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2691 | pSMB->SetupCount = 1; |
2692 | pSMB->Reserved3 = 0; | |
2693 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2694 | byte_count = 3 /* pad */ + params; | |
2695 | pSMB->ParameterCount = cpu_to_le16(params); | |
2696 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2697 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2698 | pSMB->DataOffset = cpu_to_le16(offset); | |
2699 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2700 | rename_info->overwrite = cpu_to_le32(1); | |
2701 | rename_info->root_fid = 0; | |
2702 | /* unicode only call */ | |
790fe579 | 2703 | if (target_name == NULL) { |
50c2f753 | 2704 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2705 | len_of_str = |
2706 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2707 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2708 | } else { |
acbbb76a SF |
2709 | len_of_str = |
2710 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2711 | target_name, PATH_MAX, nls_codepage, |
2712 | remap); | |
1da177e4 LT |
2713 | } |
2714 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2715 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2716 | byte_count += count; |
2717 | pSMB->DataCount = cpu_to_le16(count); | |
2718 | pSMB->TotalDataCount = pSMB->DataCount; | |
2719 | pSMB->Fid = netfid; | |
2720 | pSMB->InformationLevel = | |
2721 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2722 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2723 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2724 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2725 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2726 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2727 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2728 | if (rc) |
f96637be JP |
2729 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2730 | rc); | |
a5a2b489 | 2731 | |
1da177e4 LT |
2732 | cifs_buf_release(pSMB); |
2733 | ||
2734 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2735 | since file handle passed in no longer valid */ | |
2736 | ||
2737 | return rc; | |
2738 | } | |
2739 | ||
2740 | int | |
6d5786a3 PS |
2741 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2742 | const char *fromName, const __u16 target_tid, const char *toName, | |
2743 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2744 | { |
2745 | int rc = 0; | |
2746 | COPY_REQ *pSMB = NULL; | |
2747 | COPY_RSP *pSMBr = NULL; | |
2748 | int bytes_returned; | |
2749 | int name_len, name_len2; | |
2750 | __u16 count; | |
2751 | ||
f96637be | 2752 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2753 | copyRetry: |
2754 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2755 | (void **) &pSMBr); | |
2756 | if (rc) | |
2757 | return rc; | |
2758 | ||
2759 | pSMB->BufferFormat = 0x04; | |
2760 | pSMB->Tid2 = target_tid; | |
2761 | ||
2762 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2763 | ||
2764 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2765 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2766 | fromName, PATH_MAX, nls_codepage, | |
2767 | remap); | |
1da177e4 LT |
2768 | name_len++; /* trailing null */ |
2769 | name_len *= 2; | |
2770 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2771 | /* protocol requires ASCII signature byte on Unicode string */ | |
2772 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2773 | name_len2 = |
acbbb76a SF |
2774 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2775 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2776 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2777 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2778 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2779 | name_len = strnlen(fromName, PATH_MAX); |
2780 | name_len++; /* trailing null */ | |
2781 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2782 | name_len2 = strnlen(toName, PATH_MAX); | |
2783 | name_len2++; /* trailing null */ | |
2784 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2785 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2786 | name_len2++; /* trailing null */ | |
2787 | name_len2++; /* signature byte */ | |
2788 | } | |
2789 | ||
2790 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2791 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2792 | pSMB->ByteCount = cpu_to_le16(count); |
2793 | ||
2794 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2795 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2796 | if (rc) { | |
f96637be JP |
2797 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2798 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2799 | } |
0d817bc0 | 2800 | cifs_buf_release(pSMB); |
1da177e4 LT |
2801 | |
2802 | if (rc == -EAGAIN) | |
2803 | goto copyRetry; | |
2804 | ||
2805 | return rc; | |
2806 | } | |
2807 | ||
2808 | int | |
6d5786a3 | 2809 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2810 | const char *fromName, const char *toName, |
bc8ebdc4 | 2811 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2812 | { |
2813 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2814 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2815 | char *data_offset; | |
2816 | int name_len; | |
2817 | int name_len_target; | |
2818 | int rc = 0; | |
2819 | int bytes_returned = 0; | |
2820 | __u16 params, param_offset, offset, byte_count; | |
2821 | ||
f96637be | 2822 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2823 | createSymLinkRetry: |
2824 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2825 | (void **) &pSMBr); | |
2826 | if (rc) | |
2827 | return rc; | |
2828 | ||
2829 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2830 | name_len = | |
bc8ebdc4 NA |
2831 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2832 | /* find define for this maxpathcomponent */ | |
2833 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2834 | name_len++; /* trailing null */ |
2835 | name_len *= 2; | |
2836 | ||
50c2f753 | 2837 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2838 | name_len = strnlen(fromName, PATH_MAX); |
2839 | name_len++; /* trailing null */ | |
2840 | strncpy(pSMB->FileName, fromName, name_len); | |
2841 | } | |
2842 | params = 6 + name_len; | |
2843 | pSMB->MaxSetupCount = 0; | |
2844 | pSMB->Reserved = 0; | |
2845 | pSMB->Flags = 0; | |
2846 | pSMB->Timeout = 0; | |
2847 | pSMB->Reserved2 = 0; | |
2848 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2849 | InformationLevel) - 4; |
1da177e4 LT |
2850 | offset = param_offset + params; |
2851 | ||
2852 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2853 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2854 | name_len_target = | |
bc8ebdc4 NA |
2855 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2856 | /* find define for this maxpathcomponent */ | |
2857 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2858 | name_len_target++; /* trailing null */ |
2859 | name_len_target *= 2; | |
50c2f753 | 2860 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2861 | name_len_target = strnlen(toName, PATH_MAX); |
2862 | name_len_target++; /* trailing null */ | |
2863 | strncpy(data_offset, toName, name_len_target); | |
2864 | } | |
2865 | ||
2866 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2867 | /* BB find exact max on data count below from sess */ | |
2868 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2869 | pSMB->SetupCount = 1; | |
2870 | pSMB->Reserved3 = 0; | |
2871 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2872 | byte_count = 3 /* pad */ + params + name_len_target; | |
2873 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2874 | pSMB->ParameterCount = cpu_to_le16(params); | |
2875 | pSMB->TotalDataCount = pSMB->DataCount; | |
2876 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2877 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2878 | pSMB->DataOffset = cpu_to_le16(offset); | |
2879 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2880 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2881 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2882 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2883 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2884 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2885 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2886 | if (rc) |
f96637be JP |
2887 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2888 | rc); | |
1da177e4 | 2889 | |
0d817bc0 | 2890 | cifs_buf_release(pSMB); |
1da177e4 LT |
2891 | |
2892 | if (rc == -EAGAIN) | |
2893 | goto createSymLinkRetry; | |
2894 | ||
2895 | return rc; | |
2896 | } | |
2897 | ||
2898 | int | |
6d5786a3 | 2899 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2900 | const char *fromName, const char *toName, |
737b758c | 2901 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2902 | { |
2903 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2904 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2905 | char *data_offset; | |
2906 | int name_len; | |
2907 | int name_len_target; | |
2908 | int rc = 0; | |
2909 | int bytes_returned = 0; | |
2910 | __u16 params, param_offset, offset, byte_count; | |
2911 | ||
f96637be | 2912 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2913 | createHardLinkRetry: |
2914 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2915 | (void **) &pSMBr); | |
2916 | if (rc) | |
2917 | return rc; | |
2918 | ||
2919 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2920 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2921 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2922 | name_len++; /* trailing null */ |
2923 | name_len *= 2; | |
2924 | ||
50c2f753 | 2925 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2926 | name_len = strnlen(toName, PATH_MAX); |
2927 | name_len++; /* trailing null */ | |
2928 | strncpy(pSMB->FileName, toName, name_len); | |
2929 | } | |
2930 | params = 6 + name_len; | |
2931 | pSMB->MaxSetupCount = 0; | |
2932 | pSMB->Reserved = 0; | |
2933 | pSMB->Flags = 0; | |
2934 | pSMB->Timeout = 0; | |
2935 | pSMB->Reserved2 = 0; | |
2936 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2937 | InformationLevel) - 4; |
1da177e4 LT |
2938 | offset = param_offset + params; |
2939 | ||
2940 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2941 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2942 | name_len_target = | |
acbbb76a SF |
2943 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2944 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2945 | name_len_target++; /* trailing null */ |
2946 | name_len_target *= 2; | |
50c2f753 | 2947 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2948 | name_len_target = strnlen(fromName, PATH_MAX); |
2949 | name_len_target++; /* trailing null */ | |
2950 | strncpy(data_offset, fromName, name_len_target); | |
2951 | } | |
2952 | ||
2953 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2954 | /* BB find exact max on data count below from sess*/ | |
2955 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2956 | pSMB->SetupCount = 1; | |
2957 | pSMB->Reserved3 = 0; | |
2958 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2959 | byte_count = 3 /* pad */ + params + name_len_target; | |
2960 | pSMB->ParameterCount = cpu_to_le16(params); | |
2961 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2962 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2963 | pSMB->TotalDataCount = pSMB->DataCount; | |
2964 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2965 | pSMB->DataOffset = cpu_to_le16(offset); | |
2966 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2967 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2968 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2969 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2970 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2971 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2972 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2973 | if (rc) |
f96637be JP |
2974 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2975 | rc); | |
1da177e4 LT |
2976 | |
2977 | cifs_buf_release(pSMB); | |
2978 | if (rc == -EAGAIN) | |
2979 | goto createHardLinkRetry; | |
2980 | ||
2981 | return rc; | |
2982 | } | |
2983 | ||
2984 | int | |
6d5786a3 | 2985 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2986 | const char *from_name, const char *to_name, |
2987 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2988 | { |
2989 | int rc = 0; | |
2990 | NT_RENAME_REQ *pSMB = NULL; | |
2991 | RENAME_RSP *pSMBr = NULL; | |
2992 | int bytes_returned; | |
2993 | int name_len, name_len2; | |
2994 | __u16 count; | |
2baa2682 | 2995 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2996 | |
f96637be | 2997 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2998 | winCreateHardLinkRetry: |
2999 | ||
3000 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3001 | (void **) &pSMBr); | |
3002 | if (rc) | |
3003 | return rc; | |
3004 | ||
3005 | pSMB->SearchAttributes = | |
3006 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3007 | ATTR_DIRECTORY); | |
3008 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3009 | pSMB->ClusterCount = 0; | |
3010 | ||
3011 | pSMB->BufferFormat = 0x04; | |
3012 | ||
3013 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3014 | name_len = | |
d6e906f1 SF |
3015 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3016 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3017 | name_len++; /* trailing null */ |
3018 | name_len *= 2; | |
fcc7c09d JL |
3019 | |
3020 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3021 | pSMB->OldFileName[name_len] = 0x04; | |
3022 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3023 | name_len2 = |
acbbb76a | 3024 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3025 | to_name, PATH_MAX, cifs_sb->local_nls, |
3026 | remap); | |
1da177e4 LT |
3027 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3028 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 3029 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 3030 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 3031 | name_len++; /* trailing null */ |
d6e906f1 SF |
3032 | strncpy(pSMB->OldFileName, from_name, name_len); |
3033 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
3034 | name_len2++; /* trailing null */ |
3035 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 3036 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
3037 | name_len2++; /* trailing null */ |
3038 | name_len2++; /* signature byte */ | |
3039 | } | |
3040 | ||
3041 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3042 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3043 | pSMB->ByteCount = cpu_to_le16(count); |
3044 | ||
3045 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3046 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3047 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3048 | if (rc) |
f96637be | 3049 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3050 | |
1da177e4 LT |
3051 | cifs_buf_release(pSMB); |
3052 | if (rc == -EAGAIN) | |
3053 | goto winCreateHardLinkRetry; | |
3054 | ||
3055 | return rc; | |
3056 | } | |
3057 | ||
3058 | int | |
6d5786a3 | 3059 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3060 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3061 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3062 | { |
3063 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3064 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3065 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3066 | int rc = 0; | |
3067 | int bytes_returned; | |
3068 | int name_len; | |
3069 | __u16 params, byte_count; | |
460b9696 | 3070 | char *data_start; |
1da177e4 | 3071 | |
f96637be | 3072 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3073 | |
3074 | querySymLinkRetry: | |
3075 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3076 | (void **) &pSMBr); | |
3077 | if (rc) | |
3078 | return rc; | |
3079 | ||
3080 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3081 | name_len = | |
bc8ebdc4 NA |
3082 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3083 | searchName, PATH_MAX, nls_codepage, | |
3084 | remap); | |
1da177e4 LT |
3085 | name_len++; /* trailing null */ |
3086 | name_len *= 2; | |
50c2f753 | 3087 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3088 | name_len = strnlen(searchName, PATH_MAX); |
3089 | name_len++; /* trailing null */ | |
3090 | strncpy(pSMB->FileName, searchName, name_len); | |
3091 | } | |
3092 | ||
3093 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3094 | pSMB->TotalDataCount = 0; | |
3095 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3096 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3097 | pSMB->MaxSetupCount = 0; |
3098 | pSMB->Reserved = 0; | |
3099 | pSMB->Flags = 0; | |
3100 | pSMB->Timeout = 0; | |
3101 | pSMB->Reserved2 = 0; | |
3102 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3103 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3104 | pSMB->DataCount = 0; |
3105 | pSMB->DataOffset = 0; | |
3106 | pSMB->SetupCount = 1; | |
3107 | pSMB->Reserved3 = 0; | |
3108 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3109 | byte_count = params + 1 /* pad */ ; | |
3110 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3111 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3112 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3113 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3114 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3115 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3116 | ||
3117 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3118 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3119 | if (rc) { | |
f96637be | 3120 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3121 | } else { |
3122 | /* decode response */ | |
3123 | ||
3124 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3125 | /* BB also check enough total bytes returned */ |
820a803f | 3126 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3127 | rc = -EIO; |
1da177e4 | 3128 | else { |
0e0d2cf3 | 3129 | bool is_unicode; |
460b9696 JL |
3130 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3131 | ||
3132 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3133 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3134 | |
0e0d2cf3 SF |
3135 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3136 | is_unicode = true; | |
3137 | else | |
3138 | is_unicode = false; | |
3139 | ||
737b758c | 3140 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3141 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3142 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3143 | if (!*symlinkinfo) |
460b9696 | 3144 | rc = -ENOMEM; |
1da177e4 LT |
3145 | } |
3146 | } | |
3147 | cifs_buf_release(pSMB); | |
3148 | if (rc == -EAGAIN) | |
3149 | goto querySymLinkRetry; | |
3150 | return rc; | |
3151 | } | |
3152 | ||
c52a9554 SF |
3153 | /* |
3154 | * Recent Windows versions now create symlinks more frequently | |
3155 | * and they use the "reparse point" mechanism below. We can of course | |
3156 | * do symlinks nicely to Samba and other servers which support the | |
3157 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3158 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3159 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3160 | * In the interim this code has been moved to its own config option so | |
3161 | * it is not compiled in by default until callers fixed up and more tested. | |
3162 | */ | |
1da177e4 | 3163 | int |
d244bf2d PS |
3164 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3165 | __u16 fid, char **symlinkinfo, | |
3166 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3167 | { |
3168 | int rc = 0; | |
3169 | int bytes_returned; | |
50c2f753 SF |
3170 | struct smb_com_transaction_ioctl_req *pSMB; |
3171 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3172 | bool is_unicode; |
3173 | unsigned int sub_len; | |
3174 | char *sub_start; | |
c31f3307 SF |
3175 | struct reparse_symlink_data *reparse_buf; |
3176 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3177 | __u32 data_offset, data_count; |
3178 | char *end_of_smb; | |
3179 | ||
3180 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3181 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3182 | (void **) &pSMBr); | |
3183 | if (rc) | |
3184 | return rc; | |
3185 | ||
3186 | pSMB->TotalParameterCount = 0 ; | |
3187 | pSMB->TotalDataCount = 0; | |
3188 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3189 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3190 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3191 | pSMB->MaxSetupCount = 4; |
3192 | pSMB->Reserved = 0; | |
3193 | pSMB->ParameterOffset = 0; | |
3194 | pSMB->DataCount = 0; | |
3195 | pSMB->DataOffset = 0; | |
3196 | pSMB->SetupCount = 4; | |
3197 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3198 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3199 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3200 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3201 | pSMB->IsRootFlag = 0; | |
3202 | pSMB->Fid = fid; /* file handle always le */ | |
3203 | pSMB->ByteCount = 0; | |
3204 | ||
3205 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3206 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3207 | if (rc) { | |
f96637be | 3208 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3209 | goto qreparse_out; |
3210 | } | |
3211 | ||
3212 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3213 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3214 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3215 | /* BB also check enough total bytes returned */ | |
3216 | rc = -EIO; /* bad smb */ | |
3217 | goto qreparse_out; | |
3218 | } | |
3219 | if (!data_count || (data_count > 2048)) { | |
3220 | rc = -EIO; | |
3221 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3222 | goto qreparse_out; | |
3223 | } | |
3224 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3225 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3226 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3227 | if ((char *)reparse_buf >= end_of_smb) { | |
3228 | rc = -EIO; | |
3229 | goto qreparse_out; | |
1da177e4 | 3230 | } |
c31f3307 SF |
3231 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3232 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3233 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3234 | ||
3235 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3236 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3237 | le64_to_cpu(posix_buf->InodeType)); | |
3238 | rc = -EOPNOTSUPP; | |
3239 | goto qreparse_out; | |
3240 | } | |
3241 | is_unicode = true; | |
3242 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3243 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3244 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3245 | rc = -EIO; | |
3246 | goto qreparse_out; | |
3247 | } | |
3248 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3249 | sub_len, is_unicode, nls_codepage); | |
3250 | goto qreparse_out; | |
3251 | } else if (reparse_buf->ReparseTag != | |
3252 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3253 | rc = -EOPNOTSUPP; | |
3254 | goto qreparse_out; | |
3255 | } | |
3256 | ||
3257 | /* Reparse tag is NTFS symlink */ | |
3258 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3259 | reparse_buf->PathBuffer; | |
3260 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3261 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3262 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3263 | rc = -EIO; | |
3264 | goto qreparse_out; | |
3265 | } | |
d244bf2d PS |
3266 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3267 | is_unicode = true; | |
3268 | else | |
3269 | is_unicode = false; | |
989c7e51 | 3270 | |
d244bf2d PS |
3271 | /* BB FIXME investigate remapping reserved chars here */ |
3272 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3273 | nls_codepage); | |
3274 | if (!*symlinkinfo) | |
3275 | rc = -ENOMEM; | |
1da177e4 | 3276 | qreparse_out: |
4a6d87f1 | 3277 | cifs_buf_release(pSMB); |
1da177e4 | 3278 | |
d244bf2d PS |
3279 | /* |
3280 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3281 | * since file handle passed in no longer valid. | |
3282 | */ | |
1da177e4 LT |
3283 | return rc; |
3284 | } | |
3285 | ||
c7f508a9 SF |
3286 | int |
3287 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3288 | __u16 fid) | |
3289 | { | |
3290 | int rc = 0; | |
3291 | int bytes_returned; | |
3292 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3293 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3294 | ||
3295 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3296 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3297 | (void **) &pSMBr); | |
3298 | if (rc) | |
3299 | return rc; | |
3300 | ||
3301 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3302 | ||
3303 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3304 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3305 | pSMB->MaxParameterCount = 0; |
3306 | pSMB->MaxDataCount = 0; | |
3307 | pSMB->MaxSetupCount = 4; | |
3308 | pSMB->Reserved = 0; | |
3309 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3310 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3311 | pSMB->DataOffset = |
3312 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3313 | compression_state) - 4); /* 84 */ | |
3314 | pSMB->SetupCount = 4; | |
bc09d141 | 3315 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3316 | pSMB->ParameterCount = 0; |
bc09d141 | 3317 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3318 | pSMB->IsFsctl = 1; /* FSCTL */ |
3319 | pSMB->IsRootFlag = 0; | |
3320 | pSMB->Fid = fid; /* file handle always le */ | |
3321 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3322 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3323 | inc_rfc1001_len(pSMB, 5); |
3324 | ||
3325 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3326 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3327 | if (rc) | |
3328 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3329 | ||
3330 | cifs_buf_release(pSMB); | |
3331 | ||
3332 | /* | |
3333 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3334 | * since file handle passed in no longer valid. | |
3335 | */ | |
3336 | return rc; | |
3337 | } | |
3338 | ||
3339 | ||
1da177e4 LT |
3340 | #ifdef CONFIG_CIFS_POSIX |
3341 | ||
3342 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3343 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3344 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3345 | { |
3346 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3347 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3348 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3349 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3350 | /* |
3351 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3352 | ace->e_perm, ace->e_tag, ace->e_id); | |
3353 | */ | |
1da177e4 LT |
3354 | |
3355 | return; | |
3356 | } | |
3357 | ||
3358 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3359 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3360 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3361 | { |
3362 | int size = 0; | |
3363 | int i; | |
3364 | __u16 count; | |
50c2f753 SF |
3365 | struct cifs_posix_ace *pACE; |
3366 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3367 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3368 | |
3369 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3370 | return -EOPNOTSUPP; | |
3371 | ||
45987e00 | 3372 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3373 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3374 | pACE = &cifs_acl->ace_array[0]; | |
3375 | size = sizeof(struct cifs_posix_acl); | |
3376 | size += sizeof(struct cifs_posix_ace) * count; | |
3377 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3378 | if (size_of_data_area < size) { |
f96637be JP |
3379 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3380 | size_of_data_area, size); | |
1da177e4 LT |
3381 | return -EINVAL; |
3382 | } | |
45987e00 | 3383 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3384 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3385 | size = sizeof(struct cifs_posix_acl); | |
3386 | size += sizeof(struct cifs_posix_ace) * count; | |
3387 | /* skip past access ACEs to get to default ACEs */ | |
3388 | pACE = &cifs_acl->ace_array[count]; | |
3389 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3390 | size += sizeof(struct cifs_posix_ace) * count; | |
3391 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3392 | if (size_of_data_area < size) |
1da177e4 LT |
3393 | return -EINVAL; |
3394 | } else { | |
3395 | /* illegal type */ | |
3396 | return -EINVAL; | |
3397 | } | |
3398 | ||
3399 | size = posix_acl_xattr_size(count); | |
790fe579 | 3400 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3401 | /* used to query ACL EA size */ |
790fe579 | 3402 | } else if (size > buflen) { |
1da177e4 LT |
3403 | return -ERANGE; |
3404 | } else /* buffer big enough */ { | |
2211d5ba AG |
3405 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3406 | ||
ff7feac9 | 3407 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3408 | for (i = 0; i < count ; i++) { |
2211d5ba | 3409 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3410 | pACE++; |
1da177e4 LT |
3411 | } |
3412 | } | |
3413 | return size; | |
3414 | } | |
3415 | ||
50c2f753 | 3416 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3417 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 LT |
3418 | { |
3419 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3420 | ||
ff7feac9 SF |
3421 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3422 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3423 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3424 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3425 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3426 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3427 | } else |
ff7feac9 | 3428 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3429 | /* |
3430 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3431 | ace->e_perm, ace->e_tag, ace->e_id); | |
3432 | */ | |
1da177e4 LT |
3433 | return rc; |
3434 | } | |
3435 | ||
3436 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3437 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3438 | const int buflen, const int acl_type) | |
1da177e4 LT |
3439 | { |
3440 | __u16 rc = 0; | |
50c2f753 | 3441 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3442 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3443 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3444 | int count; |
3445 | int i; | |
3446 | ||
790fe579 | 3447 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3448 | return 0; |
3449 | ||
3450 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3451 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3452 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3453 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3454 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3455 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3456 | return 0; |
3457 | } | |
3458 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3459 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3460 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3461 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3462 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3463 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3464 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3465 | } else { |
f96637be | 3466 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3467 | return 0; |
3468 | } | |
50c2f753 | 3469 | for (i = 0; i < count; i++) { |
ae9ebe7c | 3470 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); |
790fe579 | 3471 | if (rc != 0) { |
1da177e4 LT |
3472 | /* ACE not converted */ |
3473 | break; | |
3474 | } | |
3475 | } | |
790fe579 | 3476 | if (rc == 0) { |
1da177e4 LT |
3477 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3478 | rc += sizeof(struct cifs_posix_acl); | |
3479 | /* BB add check to make sure ACL does not overflow SMB */ | |
3480 | } | |
3481 | return rc; | |
3482 | } | |
3483 | ||
3484 | int | |
6d5786a3 | 3485 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3486 | const unsigned char *searchName, |
3487 | char *acl_inf, const int buflen, const int acl_type, | |
3488 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3489 | { |
3490 | /* SMB_QUERY_POSIX_ACL */ | |
3491 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3492 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3493 | int rc = 0; | |
3494 | int bytes_returned; | |
3495 | int name_len; | |
3496 | __u16 params, byte_count; | |
50c2f753 | 3497 | |
f96637be | 3498 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3499 | |
3500 | queryAclRetry: | |
3501 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3502 | (void **) &pSMBr); | |
3503 | if (rc) | |
3504 | return rc; | |
50c2f753 | 3505 | |
1da177e4 LT |
3506 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3507 | name_len = | |
acbbb76a SF |
3508 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3509 | searchName, PATH_MAX, nls_codepage, | |
3510 | remap); | |
1da177e4 LT |
3511 | name_len++; /* trailing null */ |
3512 | name_len *= 2; | |
3513 | pSMB->FileName[name_len] = 0; | |
3514 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3515 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3516 | name_len = strnlen(searchName, PATH_MAX); |
3517 | name_len++; /* trailing null */ | |
3518 | strncpy(pSMB->FileName, searchName, name_len); | |
3519 | } | |
3520 | ||
3521 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3522 | pSMB->TotalDataCount = 0; | |
3523 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3524 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3525 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3526 | pSMB->MaxSetupCount = 0; | |
3527 | pSMB->Reserved = 0; | |
3528 | pSMB->Flags = 0; | |
3529 | pSMB->Timeout = 0; | |
3530 | pSMB->Reserved2 = 0; | |
3531 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3532 | offsetof(struct smb_com_transaction2_qpi_req, |
3533 | InformationLevel) - 4); | |
1da177e4 LT |
3534 | pSMB->DataCount = 0; |
3535 | pSMB->DataOffset = 0; | |
3536 | pSMB->SetupCount = 1; | |
3537 | pSMB->Reserved3 = 0; | |
3538 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3539 | byte_count = params + 1 /* pad */ ; | |
3540 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3541 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3542 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3543 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3544 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3545 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3546 | ||
3547 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3548 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3549 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3550 | if (rc) { |
f96637be | 3551 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3552 | } else { |
3553 | /* decode response */ | |
50c2f753 | 3554 | |
1da177e4 | 3555 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3556 | /* BB also check enough total bytes returned */ |
820a803f | 3557 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3558 | rc = -EIO; /* bad smb */ |
3559 | else { | |
3560 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3561 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3562 | rc = cifs_copy_posix_acl(acl_inf, | |
3563 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3564 | buflen, acl_type, count); |
1da177e4 LT |
3565 | } |
3566 | } | |
3567 | cifs_buf_release(pSMB); | |
3568 | if (rc == -EAGAIN) | |
3569 | goto queryAclRetry; | |
3570 | return rc; | |
3571 | } | |
3572 | ||
3573 | int | |
6d5786a3 | 3574 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3575 | const unsigned char *fileName, |
3576 | const char *local_acl, const int buflen, | |
3577 | const int acl_type, | |
3578 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3579 | { |
3580 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3581 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3582 | char *parm_data; | |
3583 | int name_len; | |
3584 | int rc = 0; | |
3585 | int bytes_returned = 0; | |
3586 | __u16 params, byte_count, data_count, param_offset, offset; | |
3587 | ||
f96637be | 3588 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3589 | setAclRetry: |
3590 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3591 | (void **) &pSMBr); |
1da177e4 LT |
3592 | if (rc) |
3593 | return rc; | |
3594 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3595 | name_len = | |
acbbb76a SF |
3596 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3597 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3598 | name_len++; /* trailing null */ |
3599 | name_len *= 2; | |
50c2f753 | 3600 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3601 | name_len = strnlen(fileName, PATH_MAX); |
3602 | name_len++; /* trailing null */ | |
3603 | strncpy(pSMB->FileName, fileName, name_len); | |
3604 | } | |
3605 | params = 6 + name_len; | |
3606 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3607 | /* BB find max SMB size from sess */ |
3608 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3609 | pSMB->MaxSetupCount = 0; |
3610 | pSMB->Reserved = 0; | |
3611 | pSMB->Flags = 0; | |
3612 | pSMB->Timeout = 0; | |
3613 | pSMB->Reserved2 = 0; | |
3614 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3615 | InformationLevel) - 4; |
1da177e4 LT |
3616 | offset = param_offset + params; |
3617 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3618 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3619 | ||
3620 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3621 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3622 | |
790fe579 | 3623 | if (data_count == 0) { |
1da177e4 LT |
3624 | rc = -EOPNOTSUPP; |
3625 | goto setACLerrorExit; | |
3626 | } | |
3627 | pSMB->DataOffset = cpu_to_le16(offset); | |
3628 | pSMB->SetupCount = 1; | |
3629 | pSMB->Reserved3 = 0; | |
3630 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3631 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3632 | byte_count = 3 /* pad */ + params + data_count; | |
3633 | pSMB->DataCount = cpu_to_le16(data_count); | |
3634 | pSMB->TotalDataCount = pSMB->DataCount; | |
3635 | pSMB->ParameterCount = cpu_to_le16(params); | |
3636 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3637 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3638 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3639 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3640 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3641 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3642 | if (rc) |
f96637be | 3643 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3644 | |
3645 | setACLerrorExit: | |
3646 | cifs_buf_release(pSMB); | |
3647 | if (rc == -EAGAIN) | |
3648 | goto setAclRetry; | |
3649 | return rc; | |
3650 | } | |
3651 | ||
f654bac2 SF |
3652 | /* BB fix tabs in this function FIXME BB */ |
3653 | int | |
6d5786a3 | 3654 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3655 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3656 | { |
50c2f753 SF |
3657 | int rc = 0; |
3658 | struct smb_t2_qfi_req *pSMB = NULL; | |
3659 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3660 | int bytes_returned; | |
3661 | __u16 params, byte_count; | |
f654bac2 | 3662 | |
f96637be | 3663 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3664 | if (tcon == NULL) |
3665 | return -ENODEV; | |
f654bac2 SF |
3666 | |
3667 | GetExtAttrRetry: | |
790fe579 SF |
3668 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3669 | (void **) &pSMBr); | |
3670 | if (rc) | |
3671 | return rc; | |
f654bac2 | 3672 | |
ad7a2926 | 3673 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3674 | pSMB->t2.TotalDataCount = 0; |
3675 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3676 | /* BB find exact max data count below from sess structure BB */ | |
3677 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3678 | pSMB->t2.MaxSetupCount = 0; | |
3679 | pSMB->t2.Reserved = 0; | |
3680 | pSMB->t2.Flags = 0; | |
3681 | pSMB->t2.Timeout = 0; | |
3682 | pSMB->t2.Reserved2 = 0; | |
3683 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3684 | Fid) - 4); | |
3685 | pSMB->t2.DataCount = 0; | |
3686 | pSMB->t2.DataOffset = 0; | |
3687 | pSMB->t2.SetupCount = 1; | |
3688 | pSMB->t2.Reserved3 = 0; | |
3689 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3690 | byte_count = params + 1 /* pad */ ; | |
3691 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3692 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3693 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3694 | pSMB->Pad = 0; | |
f654bac2 | 3695 | pSMB->Fid = netfid; |
be8e3b00 | 3696 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3697 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3698 | ||
3699 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3700 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3701 | if (rc) { | |
f96637be | 3702 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3703 | } else { |
3704 | /* decode response */ | |
3705 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3706 | /* BB also check enough total bytes returned */ |
820a803f | 3707 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3708 | /* If rc should we check for EOPNOSUPP and |
3709 | disable the srvino flag? or in caller? */ | |
3710 | rc = -EIO; /* bad smb */ | |
3711 | else { | |
3712 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3713 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3714 | struct file_chattr_info *pfinfo; | |
3715 | /* BB Do we need a cast or hash here ? */ | |
3716 | if (count != 16) { | |
f96637be | 3717 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3718 | rc = -EIO; |
3719 | goto GetExtAttrOut; | |
3720 | } | |
3721 | pfinfo = (struct file_chattr_info *) | |
3722 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3723 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3724 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3725 | } |
3726 | } | |
f654bac2 | 3727 | GetExtAttrOut: |
790fe579 SF |
3728 | cifs_buf_release(pSMB); |
3729 | if (rc == -EAGAIN) | |
3730 | goto GetExtAttrRetry; | |
3731 | return rc; | |
f654bac2 SF |
3732 | } |
3733 | ||
f654bac2 | 3734 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3735 | |
79df1bae JL |
3736 | #ifdef CONFIG_CIFS_ACL |
3737 | /* | |
3738 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3739 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3740 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3741 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3742 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3743 | * by caller | |
3744 | */ | |
3745 | static int | |
3746 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3747 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3748 | void **ret_buf) |
3749 | { | |
3750 | int rc; | |
3751 | __u32 temp_offset; | |
3752 | struct smb_com_ntransact_req *pSMB; | |
3753 | ||
3754 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3755 | (void **)&pSMB); | |
3756 | if (rc) | |
3757 | return rc; | |
3758 | *ret_buf = (void *)pSMB; | |
3759 | pSMB->Reserved = 0; | |
3760 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3761 | pSMB->TotalDataCount = 0; | |
c974befa | 3762 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3763 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3764 | pSMB->DataCount = pSMB->TotalDataCount; | |
3765 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3766 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3767 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3768 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3769 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3770 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3771 | return 0; | |
3772 | } | |
3773 | ||
3774 | static int | |
3775 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3776 | __u32 *pparmlen, __u32 *pdatalen) | |
3777 | { | |
3778 | char *end_of_smb; | |
3779 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3780 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3781 | u16 bcc; |
79df1bae JL |
3782 | |
3783 | *pdatalen = 0; | |
3784 | *pparmlen = 0; | |
3785 | ||
3786 | if (buf == NULL) | |
3787 | return -EINVAL; | |
3788 | ||
3789 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3790 | ||
820a803f JL |
3791 | bcc = get_bcc(&pSMBr->hdr); |
3792 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3793 | (char *)&pSMBr->ByteCount; |
3794 | ||
3795 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3796 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3797 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3798 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3799 | ||
3800 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3801 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3802 | ||
3803 | /* should we also check that parm and data areas do not overlap? */ | |
3804 | if (*ppparm > end_of_smb) { | |
f96637be | 3805 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3806 | return -EINVAL; |
3807 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3808 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3809 | return -EINVAL; |
3810 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3811 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3812 | return -EINVAL; |
3813 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3814 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3815 | *ppdata, data_count, (data_count + *ppdata), | |
3816 | end_of_smb, pSMBr); | |
79df1bae | 3817 | return -EINVAL; |
820a803f | 3818 | } else if (parm_count + data_count > bcc) { |
f96637be | 3819 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3820 | return -EINVAL; |
3821 | } | |
3822 | *pdatalen = data_count; | |
3823 | *pparmlen = parm_count; | |
3824 | return 0; | |
3825 | } | |
3826 | ||
0a4b92c0 SF |
3827 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3828 | int | |
6d5786a3 | 3829 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3830 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3831 | { |
3832 | int rc = 0; | |
3833 | int buf_type = 0; | |
ad7a2926 | 3834 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3835 | struct kvec iov[1]; |
da502f7d | 3836 | struct kvec rsp_iov; |
0a4b92c0 | 3837 | |
f96637be | 3838 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3839 | |
630f3f0c SF |
3840 | *pbuflen = 0; |
3841 | *acl_inf = NULL; | |
3842 | ||
b9c7a2bb | 3843 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3844 | 8 /* parm len */, tcon, (void **) &pSMB); |
3845 | if (rc) | |
3846 | return rc; | |
3847 | ||
3848 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3849 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3850 | pSMB->MaxSetupCount = 0; | |
3851 | pSMB->Fid = fid; /* file handle always le */ | |
3852 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3853 | CIFS_ACL_DACL); | |
3854 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3855 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3856 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3857 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3858 | |
a761ac57 | 3859 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3860 | 0, &rsp_iov); |
3861 | cifs_small_buf_release(pSMB); | |
44c58186 | 3862 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3863 | if (rc) { |
f96637be | 3864 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3865 | } else { /* decode response */ |
ad7a2926 | 3866 | __le32 *parm; |
630f3f0c SF |
3867 | __u32 parm_len; |
3868 | __u32 acl_len; | |
50c2f753 | 3869 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3870 | char *pdata; |
0a4b92c0 SF |
3871 | |
3872 | /* validate_nttransact */ | |
da502f7d | 3873 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3874 | &pdata, &parm_len, pbuflen); |
790fe579 | 3875 | if (rc) |
0a4b92c0 | 3876 | goto qsec_out; |
da502f7d | 3877 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3878 | |
f96637be JP |
3879 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3880 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3881 | |
3882 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3883 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3884 | *pbuflen = 0; |
0a4b92c0 SF |
3885 | goto qsec_out; |
3886 | } | |
3887 | ||
3888 | /* BB check that data area is minimum length and as big as acl_len */ | |
3889 | ||
af6f4612 | 3890 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3891 | if (acl_len != *pbuflen) { |
f96637be JP |
3892 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3893 | acl_len, *pbuflen); | |
630f3f0c SF |
3894 | if (*pbuflen > acl_len) |
3895 | *pbuflen = acl_len; | |
3896 | } | |
0a4b92c0 | 3897 | |
630f3f0c SF |
3898 | /* check if buffer is big enough for the acl |
3899 | header followed by the smallest SID */ | |
3900 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3901 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3902 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3903 | rc = -EINVAL; |
3904 | *pbuflen = 0; | |
3905 | } else { | |
f7f7c185 | 3906 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3907 | if (*acl_inf == NULL) { |
3908 | *pbuflen = 0; | |
3909 | rc = -ENOMEM; | |
3910 | } | |
630f3f0c | 3911 | } |
0a4b92c0 SF |
3912 | } |
3913 | qsec_out: | |
da502f7d | 3914 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3915 | return rc; |
3916 | } | |
97837582 SF |
3917 | |
3918 | int | |
6d5786a3 | 3919 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3920 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3921 | { |
3922 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3923 | int rc = 0; | |
3924 | int bytes_returned = 0; | |
3925 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3926 | void *pSMBr; |
97837582 SF |
3927 | |
3928 | setCifsAclRetry: | |
b2a3ad9c | 3929 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3930 | if (rc) |
b2a3ad9c | 3931 | return rc; |
97837582 SF |
3932 | |
3933 | pSMB->MaxSetupCount = 0; | |
3934 | pSMB->Reserved = 0; | |
3935 | ||
3936 | param_count = 8; | |
3937 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3938 | data_count = acllen; | |
3939 | data_offset = param_offset + param_count; | |
3940 | byte_count = 3 /* pad */ + param_count; | |
3941 | ||
3942 | pSMB->DataCount = cpu_to_le32(data_count); | |
3943 | pSMB->TotalDataCount = pSMB->DataCount; | |
3944 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3945 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3946 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3947 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3948 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3949 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3950 | pSMB->SetupCount = 0; | |
3951 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3952 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3953 | ||
3954 | pSMB->Fid = fid; /* file handle always le */ | |
3955 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3956 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3957 | |
3958 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3959 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3960 | data_offset, pntsd, acllen); | |
be8e3b00 | 3961 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3962 | } else |
be8e3b00 | 3963 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3964 | |
3965 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3966 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3967 | ||
f96637be JP |
3968 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3969 | bytes_returned, rc); | |
97837582 | 3970 | if (rc) |
f96637be | 3971 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3972 | cifs_buf_release(pSMB); |
3973 | ||
3974 | if (rc == -EAGAIN) | |
3975 | goto setCifsAclRetry; | |
3976 | ||
3977 | return (rc); | |
3978 | } | |
3979 | ||
79df1bae | 3980 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3981 | |
6b8edfe0 SF |
3982 | /* Legacy Query Path Information call for lookup to old servers such |
3983 | as Win9x/WinME */ | |
68889f26 PS |
3984 | int |
3985 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3986 | const char *search_name, FILE_ALL_INFO *data, | |
3987 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3988 | { |
ad7a2926 SF |
3989 | QUERY_INFORMATION_REQ *pSMB; |
3990 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3991 | int rc = 0; |
3992 | int bytes_returned; | |
3993 | int name_len; | |
3994 | ||
f96637be | 3995 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3996 | QInfRetry: |
3997 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3998 | (void **) &pSMBr); |
6b8edfe0 SF |
3999 | if (rc) |
4000 | return rc; | |
4001 | ||
4002 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4003 | name_len = | |
acbbb76a | 4004 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 4005 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4006 | remap); |
6b8edfe0 SF |
4007 | name_len++; /* trailing null */ |
4008 | name_len *= 2; | |
50c2f753 | 4009 | } else { |
68889f26 | 4010 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 4011 | name_len++; /* trailing null */ |
68889f26 | 4012 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
4013 | } |
4014 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4015 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4016 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4017 | pSMB->ByteCount = cpu_to_le16(name_len); |
4018 | ||
4019 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4020 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4021 | if (rc) { |
f96637be | 4022 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4023 | } else if (data) { |
1bd5bbcb SF |
4024 | struct timespec ts; |
4025 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
4026 | |
4027 | /* decode response */ | |
1bd5bbcb | 4028 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4029 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4030 | ts.tv_nsec = 0; |
4031 | ts.tv_sec = time; | |
4032 | /* decode time fields */ | |
68889f26 PS |
4033 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4034 | data->LastWriteTime = data->ChangeTime; | |
4035 | data->LastAccessTime = 0; | |
4036 | data->AllocationSize = | |
70ca734a | 4037 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4038 | data->EndOfFile = data->AllocationSize; |
4039 | data->Attributes = | |
70ca734a | 4040 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4041 | } else |
4042 | rc = -EIO; /* bad buffer passed in */ | |
4043 | ||
4044 | cifs_buf_release(pSMB); | |
4045 | ||
4046 | if (rc == -EAGAIN) | |
4047 | goto QInfRetry; | |
4048 | ||
4049 | return rc; | |
4050 | } | |
4051 | ||
bcd5357f | 4052 | int |
6d5786a3 | 4053 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4054 | u16 netfid, FILE_ALL_INFO *pFindData) |
4055 | { | |
4056 | struct smb_t2_qfi_req *pSMB = NULL; | |
4057 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4058 | int rc = 0; | |
4059 | int bytes_returned; | |
4060 | __u16 params, byte_count; | |
4061 | ||
4062 | QFileInfoRetry: | |
4063 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4064 | (void **) &pSMBr); | |
4065 | if (rc) | |
4066 | return rc; | |
4067 | ||
4068 | params = 2 /* level */ + 2 /* fid */; | |
4069 | pSMB->t2.TotalDataCount = 0; | |
4070 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4071 | /* BB find exact max data count below from sess structure BB */ | |
4072 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4073 | pSMB->t2.MaxSetupCount = 0; | |
4074 | pSMB->t2.Reserved = 0; | |
4075 | pSMB->t2.Flags = 0; | |
4076 | pSMB->t2.Timeout = 0; | |
4077 | pSMB->t2.Reserved2 = 0; | |
4078 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4079 | Fid) - 4); | |
4080 | pSMB->t2.DataCount = 0; | |
4081 | pSMB->t2.DataOffset = 0; | |
4082 | pSMB->t2.SetupCount = 1; | |
4083 | pSMB->t2.Reserved3 = 0; | |
4084 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4085 | byte_count = params + 1 /* pad */ ; | |
4086 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4087 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4088 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4089 | pSMB->Pad = 0; | |
4090 | pSMB->Fid = netfid; | |
be8e3b00 | 4091 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4092 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4093 | |
bcd5357f JL |
4094 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4095 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4096 | if (rc) { | |
ebcc943c | 4097 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4098 | } else { /* decode response */ |
4099 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4100 | |
bcd5357f JL |
4101 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4102 | rc = -EIO; | |
820a803f | 4103 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4104 | rc = -EIO; /* bad smb */ |
4105 | else if (pFindData) { | |
4106 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4107 | memcpy((char *) pFindData, | |
4108 | (char *) &pSMBr->hdr.Protocol + | |
4109 | data_offset, sizeof(FILE_ALL_INFO)); | |
4110 | } else | |
4111 | rc = -ENOMEM; | |
4112 | } | |
4113 | cifs_buf_release(pSMB); | |
4114 | if (rc == -EAGAIN) | |
4115 | goto QFileInfoRetry; | |
6b8edfe0 | 4116 | |
bcd5357f JL |
4117 | return rc; |
4118 | } | |
6b8edfe0 | 4119 | |
1da177e4 | 4120 | int |
6d5786a3 | 4121 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4122 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4123 | int legacy /* old style infolevel */, |
737b758c | 4124 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4125 | { |
68889f26 | 4126 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4127 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4128 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4129 | int rc = 0; | |
4130 | int bytes_returned; | |
4131 | int name_len; | |
4132 | __u16 params, byte_count; | |
4133 | ||
f96637be | 4134 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4135 | QPathInfoRetry: |
4136 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4137 | (void **) &pSMBr); | |
4138 | if (rc) | |
4139 | return rc; | |
4140 | ||
4141 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4142 | name_len = | |
68889f26 | 4143 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4144 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4145 | name_len++; /* trailing null */ |
4146 | name_len *= 2; | |
50c2f753 | 4147 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4148 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4149 | name_len++; /* trailing null */ |
68889f26 | 4150 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4151 | } |
4152 | ||
50c2f753 | 4153 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4154 | pSMB->TotalDataCount = 0; |
4155 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4156 | /* BB find exact max SMB PDU from sess structure BB */ |
4157 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4158 | pSMB->MaxSetupCount = 0; |
4159 | pSMB->Reserved = 0; | |
4160 | pSMB->Flags = 0; | |
4161 | pSMB->Timeout = 0; | |
4162 | pSMB->Reserved2 = 0; | |
4163 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4164 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4165 | pSMB->DataCount = 0; |
4166 | pSMB->DataOffset = 0; | |
4167 | pSMB->SetupCount = 1; | |
4168 | pSMB->Reserved3 = 0; | |
4169 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4170 | byte_count = params + 1 /* pad */ ; | |
4171 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4172 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4173 | if (legacy) |
acf1a1b1 SF |
4174 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4175 | else | |
4176 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4177 | pSMB->Reserved4 = 0; |
be8e3b00 | 4178 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4179 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4180 | ||
4181 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4182 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4183 | if (rc) { | |
f96637be | 4184 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4185 | } else { /* decode response */ |
4186 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4187 | ||
acf1a1b1 SF |
4188 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4189 | rc = -EIO; | |
820a803f | 4190 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4191 | rc = -EIO; /* bad smb */ |
820a803f | 4192 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4193 | rc = -EIO; /* 24 or 26 expected but we do not read |
4194 | last field */ | |
68889f26 | 4195 | else if (data) { |
acf1a1b1 | 4196 | int size; |
1da177e4 | 4197 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4198 | |
68889f26 PS |
4199 | /* |
4200 | * On legacy responses we do not read the last field, | |
4201 | * EAsize, fortunately since it varies by subdialect and | |
4202 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4203 | * bytes depending but we don't care here. | |
4204 | */ | |
ad7a2926 | 4205 | if (legacy) |
acf1a1b1 SF |
4206 | size = sizeof(FILE_INFO_STANDARD); |
4207 | else | |
4208 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4209 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4210 | data_offset, size); |
1da177e4 LT |
4211 | } else |
4212 | rc = -ENOMEM; | |
4213 | } | |
4214 | cifs_buf_release(pSMB); | |
4215 | if (rc == -EAGAIN) | |
4216 | goto QPathInfoRetry; | |
4217 | ||
4218 | return rc; | |
4219 | } | |
4220 | ||
c8634fd3 | 4221 | int |
6d5786a3 | 4222 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4223 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4224 | { | |
4225 | struct smb_t2_qfi_req *pSMB = NULL; | |
4226 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4227 | int rc = 0; | |
4228 | int bytes_returned; | |
4229 | __u16 params, byte_count; | |
4230 | ||
4231 | UnixQFileInfoRetry: | |
4232 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4233 | (void **) &pSMBr); | |
4234 | if (rc) | |
4235 | return rc; | |
4236 | ||
4237 | params = 2 /* level */ + 2 /* fid */; | |
4238 | pSMB->t2.TotalDataCount = 0; | |
4239 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4240 | /* BB find exact max data count below from sess structure BB */ | |
4241 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4242 | pSMB->t2.MaxSetupCount = 0; | |
4243 | pSMB->t2.Reserved = 0; | |
4244 | pSMB->t2.Flags = 0; | |
4245 | pSMB->t2.Timeout = 0; | |
4246 | pSMB->t2.Reserved2 = 0; | |
4247 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4248 | Fid) - 4); | |
4249 | pSMB->t2.DataCount = 0; | |
4250 | pSMB->t2.DataOffset = 0; | |
4251 | pSMB->t2.SetupCount = 1; | |
4252 | pSMB->t2.Reserved3 = 0; | |
4253 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4254 | byte_count = params + 1 /* pad */ ; | |
4255 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4256 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4257 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4258 | pSMB->Pad = 0; | |
4259 | pSMB->Fid = netfid; | |
be8e3b00 | 4260 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4261 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4262 | |
4263 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4264 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4265 | if (rc) { | |
ebcc943c | 4266 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4267 | } else { /* decode response */ |
4268 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4269 | ||
820a803f | 4270 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4271 | cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
c8634fd3 JL |
4272 | rc = -EIO; /* bad smb */ |
4273 | } else { | |
4274 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4275 | memcpy((char *) pFindData, | |
4276 | (char *) &pSMBr->hdr.Protocol + | |
4277 | data_offset, | |
4278 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | cifs_buf_release(pSMB); | |
4283 | if (rc == -EAGAIN) | |
4284 | goto UnixQFileInfoRetry; | |
4285 | ||
4286 | return rc; | |
4287 | } | |
4288 | ||
1da177e4 | 4289 | int |
6d5786a3 | 4290 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4291 | const unsigned char *searchName, |
582d21e5 | 4292 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4293 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4294 | { |
4295 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4296 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4297 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4298 | int rc = 0; | |
4299 | int bytes_returned = 0; | |
4300 | int name_len; | |
4301 | __u16 params, byte_count; | |
4302 | ||
f96637be | 4303 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4304 | UnixQPathInfoRetry: |
4305 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4306 | (void **) &pSMBr); | |
4307 | if (rc) | |
4308 | return rc; | |
4309 | ||
4310 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4311 | name_len = | |
acbbb76a SF |
4312 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4313 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4314 | name_len++; /* trailing null */ |
4315 | name_len *= 2; | |
50c2f753 | 4316 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4317 | name_len = strnlen(searchName, PATH_MAX); |
4318 | name_len++; /* trailing null */ | |
4319 | strncpy(pSMB->FileName, searchName, name_len); | |
4320 | } | |
4321 | ||
50c2f753 | 4322 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4323 | pSMB->TotalDataCount = 0; |
4324 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4325 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4326 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4327 | pSMB->MaxSetupCount = 0; |
4328 | pSMB->Reserved = 0; | |
4329 | pSMB->Flags = 0; | |
4330 | pSMB->Timeout = 0; | |
4331 | pSMB->Reserved2 = 0; | |
4332 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4333 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4334 | pSMB->DataCount = 0; |
4335 | pSMB->DataOffset = 0; | |
4336 | pSMB->SetupCount = 1; | |
4337 | pSMB->Reserved3 = 0; | |
4338 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4339 | byte_count = params + 1 /* pad */ ; | |
4340 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4341 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4342 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4343 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4344 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4345 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4346 | ||
4347 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4348 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4349 | if (rc) { | |
ebcc943c | 4350 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4351 | } else { /* decode response */ |
4352 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4353 | ||
820a803f | 4354 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4355 | 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 |
4356 | rc = -EIO; /* bad smb */ |
4357 | } else { | |
4358 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4359 | memcpy((char *) pFindData, | |
4360 | (char *) &pSMBr->hdr.Protocol + | |
4361 | data_offset, | |
630f3f0c | 4362 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4363 | } |
4364 | } | |
4365 | cifs_buf_release(pSMB); | |
4366 | if (rc == -EAGAIN) | |
4367 | goto UnixQPathInfoRetry; | |
4368 | ||
4369 | return rc; | |
4370 | } | |
4371 | ||
1da177e4 LT |
4372 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4373 | int | |
6d5786a3 | 4374 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4375 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4376 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4377 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4378 | { |
4379 | /* level 257 SMB_ */ | |
4380 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4381 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4382 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4383 | int rc = 0; |
4384 | int bytes_returned = 0; | |
c052e2b4 | 4385 | int name_len, remap; |
1da177e4 | 4386 | __u16 params, byte_count; |
c052e2b4 | 4387 | struct nls_table *nls_codepage; |
1da177e4 | 4388 | |
f96637be | 4389 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4390 | |
4391 | findFirstRetry: | |
4392 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4393 | (void **) &pSMBr); | |
4394 | if (rc) | |
4395 | return rc; | |
4396 | ||
c052e2b4 | 4397 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4398 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4399 | |
1da177e4 LT |
4400 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4401 | name_len = | |
acbbb76a SF |
4402 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4403 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4404 | /* We can not add the asterik earlier in case |
4405 | it got remapped to 0xF03A as if it were part of the | |
4406 | directory name instead of a wildcard */ | |
1da177e4 | 4407 | name_len *= 2; |
c052e2b4 SP |
4408 | if (msearch) { |
4409 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4410 | pSMB->FileName[name_len+1] = 0; | |
4411 | pSMB->FileName[name_len+2] = '*'; | |
4412 | pSMB->FileName[name_len+3] = 0; | |
4413 | name_len += 4; /* now the trailing null */ | |
4414 | /* null terminate just in case */ | |
4415 | pSMB->FileName[name_len] = 0; | |
4416 | pSMB->FileName[name_len+1] = 0; | |
4417 | name_len += 2; | |
4418 | } | |
1da177e4 LT |
4419 | } else { /* BB add check for overrun of SMB buf BB */ |
4420 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4421 | /* BB fix here and in unicode clause above ie |
790fe579 | 4422 | if (name_len > buffersize-header) |
1da177e4 LT |
4423 | free buffer exit; BB */ |
4424 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4425 | if (msearch) { |
4426 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4427 | pSMB->FileName[name_len+1] = '*'; | |
4428 | pSMB->FileName[name_len+2] = 0; | |
4429 | name_len += 3; | |
4430 | } | |
1da177e4 LT |
4431 | } |
4432 | ||
4433 | params = 12 + name_len /* includes null */ ; | |
4434 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4435 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4436 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4437 | pSMB->MaxSetupCount = 0; |
4438 | pSMB->Reserved = 0; | |
4439 | pSMB->Flags = 0; | |
4440 | pSMB->Timeout = 0; | |
4441 | pSMB->Reserved2 = 0; | |
4442 | byte_count = params + 1 /* pad */ ; | |
4443 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4444 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4445 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4446 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4447 | - 4); | |
1da177e4 LT |
4448 | pSMB->DataCount = 0; |
4449 | pSMB->DataOffset = 0; | |
4450 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4451 | pSMB->Reserved3 = 0; | |
4452 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4453 | pSMB->SearchAttributes = | |
4454 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4455 | ATTR_DIRECTORY); | |
50c2f753 | 4456 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4457 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4458 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4459 | ||
4460 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4461 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4462 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4463 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4464 | ||
4465 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4466 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4467 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4468 | |
88274815 SF |
4469 | if (rc) {/* BB add logic to retry regular search if Unix search |
4470 | rejected unexpectedly by server */ | |
1da177e4 | 4471 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4472 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4473 | |
88274815 | 4474 | cifs_buf_release(pSMB); |
1da177e4 LT |
4475 | |
4476 | /* BB eventually could optimize out free and realloc of buf */ | |
4477 | /* for this case */ | |
4478 | if (rc == -EAGAIN) | |
4479 | goto findFirstRetry; | |
4480 | } else { /* decode response */ | |
4481 | /* BB remember to free buffer if error BB */ | |
4482 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4483 | if (rc == 0) { |
b77d753c SF |
4484 | unsigned int lnoff; |
4485 | ||
1da177e4 | 4486 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4487 | psrch_inf->unicode = true; |
1da177e4 | 4488 | else |
4b18f2a9 | 4489 | psrch_inf->unicode = false; |
1da177e4 LT |
4490 | |
4491 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4492 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4493 | psrch_inf->srch_entries_start = |
4494 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4495 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4496 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4497 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4498 | ||
790fe579 | 4499 | if (parms->EndofSearch) |
4b18f2a9 | 4500 | psrch_inf->endOfSearch = true; |
1da177e4 | 4501 | else |
4b18f2a9 | 4502 | psrch_inf->endOfSearch = false; |
1da177e4 | 4503 | |
50c2f753 SF |
4504 | psrch_inf->entries_in_buffer = |
4505 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4506 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4507 | psrch_inf->entries_in_buffer; |
b77d753c | 4508 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4509 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4510 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4511 | psrch_inf->last_entry = NULL; |
4512 | return rc; | |
4513 | } | |
4514 | ||
0752f152 | 4515 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4516 | lnoff; |
4517 | ||
c052e2b4 SP |
4518 | if (pnetfid) |
4519 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4520 | } else { |
4521 | cifs_buf_release(pSMB); | |
4522 | } | |
4523 | } | |
4524 | ||
4525 | return rc; | |
4526 | } | |
4527 | ||
6d5786a3 PS |
4528 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4529 | __u16 searchHandle, __u16 search_flags, | |
4530 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4531 | { |
4532 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4533 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4534 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4535 | char *response_data; |
4536 | int rc = 0; | |
9438fabb JL |
4537 | int bytes_returned; |
4538 | unsigned int name_len; | |
1da177e4 LT |
4539 | __u16 params, byte_count; |
4540 | ||
f96637be | 4541 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4542 | |
4b18f2a9 | 4543 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4544 | return -ENOENT; |
4545 | ||
4546 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4547 | (void **) &pSMBr); | |
4548 | if (rc) | |
4549 | return rc; | |
4550 | ||
50c2f753 | 4551 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4552 | byte_count = 0; |
4553 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4554 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4555 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4556 | pSMB->MaxSetupCount = 0; |
4557 | pSMB->Reserved = 0; | |
4558 | pSMB->Flags = 0; | |
4559 | pSMB->Timeout = 0; | |
4560 | pSMB->Reserved2 = 0; | |
4561 | pSMB->ParameterOffset = cpu_to_le16( | |
4562 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4563 | pSMB->DataCount = 0; | |
4564 | pSMB->DataOffset = 0; | |
4565 | pSMB->SetupCount = 1; | |
4566 | pSMB->Reserved3 = 0; | |
4567 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4568 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4569 | pSMB->SearchCount = | |
630f3f0c | 4570 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4571 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4572 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4573 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4574 | |
4575 | name_len = psrch_inf->resume_name_len; | |
4576 | params += name_len; | |
790fe579 | 4577 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4578 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4579 | byte_count += name_len; | |
ef6724e3 SF |
4580 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4581 | pSMB->ResumeFileName[name_len] = 0; | |
4582 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4583 | } else { |
4584 | rc = -EINVAL; | |
4585 | goto FNext2_err_exit; | |
4586 | } | |
4587 | byte_count = params + 1 /* pad */ ; | |
4588 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4589 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4590 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4591 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4592 | |
1da177e4 LT |
4593 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4594 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4595 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4596 | if (rc) { |
4597 | if (rc == -EBADF) { | |
4b18f2a9 | 4598 | psrch_inf->endOfSearch = true; |
6353450a | 4599 | cifs_buf_release(pSMB); |
50c2f753 | 4600 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4601 | } else |
f96637be | 4602 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4603 | } else { /* decode response */ |
4604 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4605 | |
790fe579 | 4606 | if (rc == 0) { |
b77d753c SF |
4607 | unsigned int lnoff; |
4608 | ||
1da177e4 LT |
4609 | /* BB fixme add lock for file (srch_info) struct here */ |
4610 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4611 | psrch_inf->unicode = true; |
1da177e4 | 4612 | else |
4b18f2a9 | 4613 | psrch_inf->unicode = false; |
1da177e4 LT |
4614 | response_data = (char *) &pSMBr->hdr.Protocol + |
4615 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4616 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4617 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4618 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4619 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4620 | cifs_small_buf_release( |
4621 | psrch_inf->ntwrk_buf_start); | |
4622 | else | |
4623 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4624 | psrch_inf->srch_entries_start = response_data; |
4625 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4626 | psrch_inf->smallBuf = 0; |
790fe579 | 4627 | if (parms->EndofSearch) |
4b18f2a9 | 4628 | psrch_inf->endOfSearch = true; |
1da177e4 | 4629 | else |
4b18f2a9 | 4630 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4631 | psrch_inf->entries_in_buffer = |
4632 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4633 | psrch_inf->index_of_last_entry += |
4634 | psrch_inf->entries_in_buffer; | |
b77d753c | 4635 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4636 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4637 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4638 | psrch_inf->last_entry = NULL; |
4639 | return rc; | |
4640 | } else | |
4641 | psrch_inf->last_entry = | |
4642 | psrch_inf->srch_entries_start + lnoff; | |
4643 | ||
f96637be JP |
4644 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4645 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4646 | |
4647 | /* BB fixme add unlock here */ | |
4648 | } | |
4649 | ||
4650 | } | |
4651 | ||
4652 | /* BB On error, should we leave previous search buf (and count and | |
4653 | last entry fields) intact or free the previous one? */ | |
4654 | ||
4655 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4656 | since file handle passed in no longer valid */ | |
4657 | FNext2_err_exit: | |
4658 | if (rc != 0) | |
4659 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4660 | return rc; |
4661 | } | |
4662 | ||
4663 | int | |
6d5786a3 | 4664 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4665 | const __u16 searchHandle) |
1da177e4 LT |
4666 | { |
4667 | int rc = 0; | |
4668 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4669 | |
f96637be | 4670 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4671 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4672 | ||
4673 | /* no sense returning error if session restarted | |
4674 | as file handle has been closed */ | |
790fe579 | 4675 | if (rc == -EAGAIN) |
1da177e4 LT |
4676 | return 0; |
4677 | if (rc) | |
4678 | return rc; | |
4679 | ||
1da177e4 LT |
4680 | pSMB->FileID = searchHandle; |
4681 | pSMB->ByteCount = 0; | |
792af7b0 | 4682 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4683 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4684 | if (rc) |
f96637be | 4685 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4686 | |
44c58186 | 4687 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4688 | |
4689 | /* Since session is dead, search handle closed on server already */ | |
4690 | if (rc == -EAGAIN) | |
4691 | rc = 0; | |
4692 | ||
4693 | return rc; | |
4694 | } | |
4695 | ||
1da177e4 | 4696 | int |
6d5786a3 | 4697 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4698 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4699 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4700 | { |
4701 | int rc = 0; | |
4702 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4703 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4704 | int name_len, bytes_returned; | |
4705 | __u16 params, byte_count; | |
4706 | ||
f96637be | 4707 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4708 | if (tcon == NULL) |
50c2f753 | 4709 | return -ENODEV; |
1da177e4 LT |
4710 | |
4711 | GetInodeNumberRetry: | |
4712 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4713 | (void **) &pSMBr); |
1da177e4 LT |
4714 | if (rc) |
4715 | return rc; | |
4716 | ||
1da177e4 LT |
4717 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4718 | name_len = | |
acbbb76a | 4719 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4720 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4721 | remap); |
1da177e4 LT |
4722 | name_len++; /* trailing null */ |
4723 | name_len *= 2; | |
50c2f753 | 4724 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4725 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4726 | name_len++; /* trailing null */ |
1208ef1f | 4727 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4728 | } |
4729 | ||
4730 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4731 | pSMB->TotalDataCount = 0; | |
4732 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4733 | /* BB find exact max data count below from sess structure BB */ | |
4734 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4735 | pSMB->MaxSetupCount = 0; | |
4736 | pSMB->Reserved = 0; | |
4737 | pSMB->Flags = 0; | |
4738 | pSMB->Timeout = 0; | |
4739 | pSMB->Reserved2 = 0; | |
4740 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4741 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4742 | pSMB->DataCount = 0; |
4743 | pSMB->DataOffset = 0; | |
4744 | pSMB->SetupCount = 1; | |
4745 | pSMB->Reserved3 = 0; | |
4746 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4747 | byte_count = params + 1 /* pad */ ; | |
4748 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4749 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4750 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4751 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4752 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4753 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4754 | ||
4755 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4756 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4757 | if (rc) { | |
f96637be | 4758 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4759 | } else { |
4760 | /* decode response */ | |
4761 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4762 | /* BB also check enough total bytes returned */ |
820a803f | 4763 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4764 | /* If rc should we check for EOPNOSUPP and |
4765 | disable the srvino flag? or in caller? */ | |
4766 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4767 | else { |
1da177e4 LT |
4768 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4769 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4770 | struct file_internal_info *pfinfo; |
1da177e4 | 4771 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4772 | if (count < 8) { |
f96637be | 4773 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4774 | rc = -EIO; |
4775 | goto GetInodeNumOut; | |
4776 | } | |
4777 | pfinfo = (struct file_internal_info *) | |
4778 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4779 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4780 | } |
4781 | } | |
4782 | GetInodeNumOut: | |
4783 | cifs_buf_release(pSMB); | |
4784 | if (rc == -EAGAIN) | |
4785 | goto GetInodeNumberRetry; | |
4786 | return rc; | |
4787 | } | |
1da177e4 LT |
4788 | |
4789 | int | |
6d5786a3 | 4790 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4791 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4792 | unsigned int *num_of_nodes, |
737b758c | 4793 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4794 | { |
4795 | /* TRANS2_GET_DFS_REFERRAL */ | |
4796 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4797 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4798 | int rc = 0; |
4799 | int bytes_returned; | |
4800 | int name_len; | |
1da177e4 | 4801 | __u16 params, byte_count; |
c2cf07d5 SF |
4802 | *num_of_nodes = 0; |
4803 | *target_nodes = NULL; | |
1da177e4 | 4804 | |
f96637be | 4805 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4806 | if (ses == NULL) |
4807 | return -ENODEV; | |
4808 | getDFSRetry: | |
4809 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4810 | (void **) &pSMBr); | |
4811 | if (rc) | |
4812 | return rc; | |
50c2f753 SF |
4813 | |
4814 | /* server pointer checked in called function, | |
1982c344 | 4815 | but should never be null here anyway */ |
88257360 | 4816 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4817 | pSMB->hdr.Tid = ses->ipc_tid; |
4818 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4819 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4820 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4821 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4822 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4823 | |
4824 | if (ses->capabilities & CAP_UNICODE) { | |
4825 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4826 | name_len = | |
acbbb76a | 4827 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4828 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4829 | remap); |
1da177e4 LT |
4830 | name_len++; /* trailing null */ |
4831 | name_len *= 2; | |
50c2f753 | 4832 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4833 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4834 | name_len++; /* trailing null */ |
b669f33c | 4835 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4836 | } |
4837 | ||
65c3b205 | 4838 | if (ses->server->sign) |
38d77c50 | 4839 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4840 | |
50c2f753 | 4841 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4842 | |
1da177e4 LT |
4843 | params = 2 /* level */ + name_len /*includes null */ ; |
4844 | pSMB->TotalDataCount = 0; | |
4845 | pSMB->DataCount = 0; | |
4846 | pSMB->DataOffset = 0; | |
4847 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4848 | /* BB find exact max SMB PDU from sess structure BB */ |
4849 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4850 | pSMB->MaxSetupCount = 0; |
4851 | pSMB->Reserved = 0; | |
4852 | pSMB->Flags = 0; | |
4853 | pSMB->Timeout = 0; | |
4854 | pSMB->Reserved2 = 0; | |
4855 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4856 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4857 | pSMB->SetupCount = 1; |
4858 | pSMB->Reserved3 = 0; | |
4859 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4860 | byte_count = params + 3 /* pad */ ; | |
4861 | pSMB->ParameterCount = cpu_to_le16(params); | |
4862 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4863 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4864 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4865 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4866 | ||
4867 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4868 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4869 | if (rc) { | |
f96637be | 4870 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4871 | goto GetDFSRefExit; |
4872 | } | |
4873 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4874 | |
c2cf07d5 | 4875 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4876 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4877 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4878 | goto GetDFSRefExit; |
4879 | } | |
c2cf07d5 | 4880 | |
f96637be JP |
4881 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4882 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4883 | |
fec4585f | 4884 | /* parse returned result into more usable form */ |
4ecce920 AA |
4885 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4886 | le16_to_cpu(pSMBr->t2.DataCount), | |
4887 | num_of_nodes, target_nodes, nls_codepage, | |
4888 | remap, search_name, | |
284316dd | 4889 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4890 | |
1da177e4 | 4891 | GetDFSRefExit: |
0d817bc0 | 4892 | cifs_buf_release(pSMB); |
1da177e4 LT |
4893 | |
4894 | if (rc == -EAGAIN) | |
4895 | goto getDFSRetry; | |
4896 | ||
4897 | return rc; | |
4898 | } | |
4899 | ||
20962438 SF |
4900 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4901 | int | |
6d5786a3 PS |
4902 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4903 | struct kstatfs *FSData) | |
20962438 SF |
4904 | { |
4905 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4906 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4907 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4908 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4909 | int rc = 0; | |
4910 | int bytes_returned = 0; | |
4911 | __u16 params, byte_count; | |
4912 | ||
f96637be | 4913 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4914 | oldQFSInfoRetry: |
4915 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4916 | (void **) &pSMBr); | |
4917 | if (rc) | |
4918 | return rc; | |
20962438 SF |
4919 | |
4920 | params = 2; /* level */ | |
4921 | pSMB->TotalDataCount = 0; | |
4922 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4923 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4924 | pSMB->MaxSetupCount = 0; | |
4925 | pSMB->Reserved = 0; | |
4926 | pSMB->Flags = 0; | |
4927 | pSMB->Timeout = 0; | |
4928 | pSMB->Reserved2 = 0; | |
4929 | byte_count = params + 1 /* pad */ ; | |
4930 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4931 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4932 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4933 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4934 | pSMB->DataCount = 0; | |
4935 | pSMB->DataOffset = 0; | |
4936 | pSMB->SetupCount = 1; | |
4937 | pSMB->Reserved3 = 0; | |
4938 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4939 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4940 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4941 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4942 | ||
4943 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4944 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4945 | if (rc) { | |
f96637be | 4946 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4947 | } else { /* decode response */ |
4948 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4949 | ||
820a803f | 4950 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4951 | rc = -EIO; /* bad smb */ |
4952 | else { | |
4953 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4954 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4955 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4956 | |
50c2f753 | 4957 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4958 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4959 | FSData->f_bsize = | |
4960 | le16_to_cpu(response_data->BytesPerSector) * | |
4961 | le32_to_cpu(response_data-> | |
4962 | SectorsPerAllocationUnit); | |
4963 | FSData->f_blocks = | |
50c2f753 | 4964 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4965 | FSData->f_bfree = FSData->f_bavail = |
4966 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4967 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4968 | (unsigned long long)FSData->f_blocks, | |
4969 | (unsigned long long)FSData->f_bfree, | |
4970 | FSData->f_bsize); | |
20962438 SF |
4971 | } |
4972 | } | |
4973 | cifs_buf_release(pSMB); | |
4974 | ||
4975 | if (rc == -EAGAIN) | |
4976 | goto oldQFSInfoRetry; | |
4977 | ||
4978 | return rc; | |
4979 | } | |
4980 | ||
1da177e4 | 4981 | int |
6d5786a3 PS |
4982 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4983 | struct kstatfs *FSData) | |
1da177e4 LT |
4984 | { |
4985 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4986 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4987 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4988 | FILE_SYSTEM_INFO *response_data; | |
4989 | int rc = 0; | |
4990 | int bytes_returned = 0; | |
4991 | __u16 params, byte_count; | |
4992 | ||
f96637be | 4993 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4994 | QFSInfoRetry: |
4995 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4996 | (void **) &pSMBr); | |
4997 | if (rc) | |
4998 | return rc; | |
4999 | ||
5000 | params = 2; /* level */ | |
5001 | pSMB->TotalDataCount = 0; | |
5002 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5003 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5004 | pSMB->MaxSetupCount = 0; |
5005 | pSMB->Reserved = 0; | |
5006 | pSMB->Flags = 0; | |
5007 | pSMB->Timeout = 0; | |
5008 | pSMB->Reserved2 = 0; | |
5009 | byte_count = params + 1 /* pad */ ; | |
5010 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5011 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5012 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5013 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5014 | pSMB->DataCount = 0; |
5015 | pSMB->DataOffset = 0; | |
5016 | pSMB->SetupCount = 1; | |
5017 | pSMB->Reserved3 = 0; | |
5018 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5019 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5020 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5021 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5022 | ||
5023 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5024 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5025 | if (rc) { | |
f96637be | 5026 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5027 | } else { /* decode response */ |
50c2f753 | 5028 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5029 | |
820a803f | 5030 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5031 | rc = -EIO; /* bad smb */ |
5032 | else { | |
5033 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5034 | |
5035 | response_data = | |
5036 | (FILE_SYSTEM_INFO | |
5037 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5038 | data_offset); | |
5039 | FSData->f_bsize = | |
5040 | le32_to_cpu(response_data->BytesPerSector) * | |
5041 | le32_to_cpu(response_data-> | |
5042 | SectorsPerAllocationUnit); | |
5043 | FSData->f_blocks = | |
5044 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5045 | FSData->f_bfree = FSData->f_bavail = | |
5046 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5047 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5048 | (unsigned long long)FSData->f_blocks, | |
5049 | (unsigned long long)FSData->f_bfree, | |
5050 | FSData->f_bsize); | |
1da177e4 LT |
5051 | } |
5052 | } | |
5053 | cifs_buf_release(pSMB); | |
5054 | ||
5055 | if (rc == -EAGAIN) | |
5056 | goto QFSInfoRetry; | |
5057 | ||
5058 | return rc; | |
5059 | } | |
5060 | ||
5061 | int | |
6d5786a3 | 5062 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5063 | { |
5064 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5065 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5066 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5067 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5068 | int rc = 0; | |
5069 | int bytes_returned = 0; | |
5070 | __u16 params, byte_count; | |
5071 | ||
f96637be | 5072 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5073 | QFSAttributeRetry: |
5074 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5075 | (void **) &pSMBr); | |
5076 | if (rc) | |
5077 | return rc; | |
5078 | ||
5079 | params = 2; /* level */ | |
5080 | pSMB->TotalDataCount = 0; | |
5081 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5082 | /* BB find exact max SMB PDU from sess structure BB */ |
5083 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5084 | pSMB->MaxSetupCount = 0; |
5085 | pSMB->Reserved = 0; | |
5086 | pSMB->Flags = 0; | |
5087 | pSMB->Timeout = 0; | |
5088 | pSMB->Reserved2 = 0; | |
5089 | byte_count = params + 1 /* pad */ ; | |
5090 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5091 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5092 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5093 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5094 | pSMB->DataCount = 0; |
5095 | pSMB->DataOffset = 0; | |
5096 | pSMB->SetupCount = 1; | |
5097 | pSMB->Reserved3 = 0; | |
5098 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5099 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5100 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5101 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5102 | ||
5103 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5104 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5105 | if (rc) { | |
f96637be | 5106 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5107 | } else { /* decode response */ |
5108 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5109 | ||
820a803f | 5110 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5111 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5112 | rc = -EIO; /* bad smb */ |
5113 | } else { | |
5114 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5115 | response_data = | |
5116 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5117 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5118 | data_offset); | |
5119 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5120 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5121 | } |
5122 | } | |
5123 | cifs_buf_release(pSMB); | |
5124 | ||
5125 | if (rc == -EAGAIN) | |
5126 | goto QFSAttributeRetry; | |
5127 | ||
5128 | return rc; | |
5129 | } | |
5130 | ||
5131 | int | |
6d5786a3 | 5132 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5133 | { |
5134 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5135 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5136 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5137 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5138 | int rc = 0; | |
5139 | int bytes_returned = 0; | |
5140 | __u16 params, byte_count; | |
5141 | ||
f96637be | 5142 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5143 | QFSDeviceRetry: |
5144 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5145 | (void **) &pSMBr); | |
5146 | if (rc) | |
5147 | return rc; | |
5148 | ||
5149 | params = 2; /* level */ | |
5150 | pSMB->TotalDataCount = 0; | |
5151 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5152 | /* BB find exact max SMB PDU from sess structure BB */ |
5153 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5154 | pSMB->MaxSetupCount = 0; |
5155 | pSMB->Reserved = 0; | |
5156 | pSMB->Flags = 0; | |
5157 | pSMB->Timeout = 0; | |
5158 | pSMB->Reserved2 = 0; | |
5159 | byte_count = params + 1 /* pad */ ; | |
5160 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5161 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5162 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5163 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5164 | |
5165 | pSMB->DataCount = 0; | |
5166 | pSMB->DataOffset = 0; | |
5167 | pSMB->SetupCount = 1; | |
5168 | pSMB->Reserved3 = 0; | |
5169 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5170 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5171 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5172 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5173 | ||
5174 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5175 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5176 | if (rc) { | |
f96637be | 5177 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5178 | } else { /* decode response */ |
5179 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5180 | ||
820a803f JL |
5181 | if (rc || get_bcc(&pSMBr->hdr) < |
5182 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5183 | rc = -EIO; /* bad smb */ |
5184 | else { | |
5185 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5186 | response_data = | |
737b758c SF |
5187 | (FILE_SYSTEM_DEVICE_INFO *) |
5188 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5189 | data_offset); |
5190 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5191 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5192 | } |
5193 | } | |
5194 | cifs_buf_release(pSMB); | |
5195 | ||
5196 | if (rc == -EAGAIN) | |
5197 | goto QFSDeviceRetry; | |
5198 | ||
5199 | return rc; | |
5200 | } | |
5201 | ||
5202 | int | |
6d5786a3 | 5203 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5204 | { |
5205 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5206 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5207 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5208 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5209 | int rc = 0; | |
5210 | int bytes_returned = 0; | |
5211 | __u16 params, byte_count; | |
5212 | ||
f96637be | 5213 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5214 | QFSUnixRetry: |
f569599a JL |
5215 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5216 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5217 | if (rc) |
5218 | return rc; | |
5219 | ||
5220 | params = 2; /* level */ | |
5221 | pSMB->TotalDataCount = 0; | |
5222 | pSMB->DataCount = 0; | |
5223 | pSMB->DataOffset = 0; | |
5224 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5225 | /* BB find exact max SMB PDU from sess structure BB */ |
5226 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5227 | pSMB->MaxSetupCount = 0; |
5228 | pSMB->Reserved = 0; | |
5229 | pSMB->Flags = 0; | |
5230 | pSMB->Timeout = 0; | |
5231 | pSMB->Reserved2 = 0; | |
5232 | byte_count = params + 1 /* pad */ ; | |
5233 | pSMB->ParameterCount = cpu_to_le16(params); | |
5234 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5235 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5236 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5237 | pSMB->SetupCount = 1; |
5238 | pSMB->Reserved3 = 0; | |
5239 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5240 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5241 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5242 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5243 | ||
5244 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5245 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5246 | if (rc) { | |
f96637be | 5247 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5248 | } else { /* decode response */ |
5249 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5250 | ||
820a803f | 5251 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5252 | rc = -EIO; /* bad smb */ |
5253 | } else { | |
5254 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5255 | response_data = | |
5256 | (FILE_SYSTEM_UNIX_INFO | |
5257 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5258 | data_offset); | |
5259 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5260 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5261 | } |
5262 | } | |
5263 | cifs_buf_release(pSMB); | |
5264 | ||
5265 | if (rc == -EAGAIN) | |
5266 | goto QFSUnixRetry; | |
5267 | ||
5268 | ||
5269 | return rc; | |
5270 | } | |
5271 | ||
ac67055e | 5272 | int |
6d5786a3 | 5273 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5274 | { |
5275 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5276 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5277 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5278 | int rc = 0; | |
5279 | int bytes_returned = 0; | |
5280 | __u16 params, param_offset, offset, byte_count; | |
5281 | ||
f96637be | 5282 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5283 | SETFSUnixRetry: |
f26282c9 | 5284 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5285 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5286 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5287 | if (rc) |
5288 | return rc; | |
5289 | ||
5290 | params = 4; /* 2 bytes zero followed by info level. */ | |
5291 | pSMB->MaxSetupCount = 0; | |
5292 | pSMB->Reserved = 0; | |
5293 | pSMB->Flags = 0; | |
5294 | pSMB->Timeout = 0; | |
5295 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5296 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5297 | - 4; | |
ac67055e JA |
5298 | offset = param_offset + params; |
5299 | ||
5300 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5301 | /* BB find exact max SMB PDU from sess structure BB */ |
5302 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5303 | pSMB->SetupCount = 1; |
5304 | pSMB->Reserved3 = 0; | |
5305 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5306 | byte_count = 1 /* pad */ + params + 12; | |
5307 | ||
5308 | pSMB->DataCount = cpu_to_le16(12); | |
5309 | pSMB->ParameterCount = cpu_to_le16(params); | |
5310 | pSMB->TotalDataCount = pSMB->DataCount; | |
5311 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5312 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5313 | pSMB->DataOffset = cpu_to_le16(offset); | |
5314 | ||
5315 | /* Params. */ | |
5316 | pSMB->FileNum = 0; | |
5317 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5318 | ||
5319 | /* Data. */ | |
5320 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5321 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5322 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5323 | ||
be8e3b00 | 5324 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5325 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5326 | ||
5327 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5328 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5329 | if (rc) { | |
f96637be | 5330 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5331 | } else { /* decode response */ |
5332 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5333 | if (rc) |
ac67055e | 5334 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5335 | } |
5336 | cifs_buf_release(pSMB); | |
5337 | ||
5338 | if (rc == -EAGAIN) | |
5339 | goto SETFSUnixRetry; | |
5340 | ||
5341 | return rc; | |
5342 | } | |
5343 | ||
5344 | ||
1da177e4 LT |
5345 | |
5346 | int | |
6d5786a3 | 5347 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5348 | struct kstatfs *FSData) |
1da177e4 LT |
5349 | { |
5350 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5351 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5352 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5353 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5354 | int rc = 0; | |
5355 | int bytes_returned = 0; | |
5356 | __u16 params, byte_count; | |
5357 | ||
f96637be | 5358 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5359 | QFSPosixRetry: |
5360 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5361 | (void **) &pSMBr); | |
5362 | if (rc) | |
5363 | return rc; | |
5364 | ||
5365 | params = 2; /* level */ | |
5366 | pSMB->TotalDataCount = 0; | |
5367 | pSMB->DataCount = 0; | |
5368 | pSMB->DataOffset = 0; | |
5369 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5370 | /* BB find exact max SMB PDU from sess structure BB */ |
5371 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5372 | pSMB->MaxSetupCount = 0; |
5373 | pSMB->Reserved = 0; | |
5374 | pSMB->Flags = 0; | |
5375 | pSMB->Timeout = 0; | |
5376 | pSMB->Reserved2 = 0; | |
5377 | byte_count = params + 1 /* pad */ ; | |
5378 | pSMB->ParameterCount = cpu_to_le16(params); | |
5379 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5380 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5381 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5382 | pSMB->SetupCount = 1; |
5383 | pSMB->Reserved3 = 0; | |
5384 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5385 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5386 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5387 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5388 | ||
5389 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5390 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5391 | if (rc) { | |
f96637be | 5392 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5393 | } else { /* decode response */ |
5394 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5395 | ||
820a803f | 5396 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5397 | rc = -EIO; /* bad smb */ |
5398 | } else { | |
5399 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5400 | response_data = | |
5401 | (FILE_SYSTEM_POSIX_INFO | |
5402 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5403 | data_offset); | |
5404 | FSData->f_bsize = | |
5405 | le32_to_cpu(response_data->BlockSize); | |
5406 | FSData->f_blocks = | |
5407 | le64_to_cpu(response_data->TotalBlocks); | |
5408 | FSData->f_bfree = | |
5409 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5410 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5411 | FSData->f_bavail = FSData->f_bfree; |
5412 | } else { | |
5413 | FSData->f_bavail = | |
50c2f753 | 5414 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5415 | } |
790fe579 | 5416 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5417 | FSData->f_files = |
50c2f753 | 5418 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5419 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5420 | FSData->f_ffree = |
50c2f753 | 5421 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5422 | } |
5423 | } | |
5424 | cifs_buf_release(pSMB); | |
5425 | ||
5426 | if (rc == -EAGAIN) | |
5427 | goto QFSPosixRetry; | |
5428 | ||
5429 | return rc; | |
5430 | } | |
5431 | ||
5432 | ||
d1433418 PS |
5433 | /* |
5434 | * We can not use write of zero bytes trick to set file size due to need for | |
5435 | * large file support. Also note that this SetPathInfo is preferred to | |
5436 | * SetFileInfo based method in next routine which is only needed to work around | |
5437 | * a sharing violation bugin Samba which this routine can run into. | |
5438 | */ | |
1da177e4 | 5439 | int |
6d5786a3 | 5440 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5441 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5442 | bool set_allocation) | |
1da177e4 LT |
5443 | { |
5444 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5445 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5446 | struct file_end_of_file_info *parm_data; | |
5447 | int name_len; | |
5448 | int rc = 0; | |
5449 | int bytes_returned = 0; | |
2baa2682 | 5450 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5451 | |
1da177e4 LT |
5452 | __u16 params, byte_count, data_count, param_offset, offset; |
5453 | ||
f96637be | 5454 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5455 | SetEOFRetry: |
5456 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5457 | (void **) &pSMBr); | |
5458 | if (rc) | |
5459 | return rc; | |
5460 | ||
5461 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5462 | name_len = | |
d1433418 PS |
5463 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5464 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5465 | name_len++; /* trailing null */ |
5466 | name_len *= 2; | |
3e87d803 | 5467 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5468 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5469 | name_len++; /* trailing null */ |
d1433418 | 5470 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5471 | } |
5472 | params = 6 + name_len; | |
26f57364 | 5473 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5474 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5475 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5476 | pSMB->MaxSetupCount = 0; |
5477 | pSMB->Reserved = 0; | |
5478 | pSMB->Flags = 0; | |
5479 | pSMB->Timeout = 0; | |
5480 | pSMB->Reserved2 = 0; | |
5481 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5482 | InformationLevel) - 4; |
1da177e4 | 5483 | offset = param_offset + params; |
d1433418 | 5484 | if (set_allocation) { |
50c2f753 SF |
5485 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5486 | pSMB->InformationLevel = | |
5487 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5488 | else | |
5489 | pSMB->InformationLevel = | |
5490 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5491 | } else /* Set File Size */ { | |
1da177e4 LT |
5492 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5493 | pSMB->InformationLevel = | |
50c2f753 | 5494 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5495 | else |
5496 | pSMB->InformationLevel = | |
50c2f753 | 5497 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5498 | } |
5499 | ||
5500 | parm_data = | |
5501 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5502 | offset); | |
5503 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5504 | pSMB->DataOffset = cpu_to_le16(offset); | |
5505 | pSMB->SetupCount = 1; | |
5506 | pSMB->Reserved3 = 0; | |
5507 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5508 | byte_count = 3 /* pad */ + params + data_count; | |
5509 | pSMB->DataCount = cpu_to_le16(data_count); | |
5510 | pSMB->TotalDataCount = pSMB->DataCount; | |
5511 | pSMB->ParameterCount = cpu_to_le16(params); | |
5512 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5513 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5514 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5515 | parm_data->FileSize = cpu_to_le64(size); |
5516 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5517 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5518 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5519 | if (rc) |
f96637be | 5520 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5521 | |
5522 | cifs_buf_release(pSMB); | |
5523 | ||
5524 | if (rc == -EAGAIN) | |
5525 | goto SetEOFRetry; | |
5526 | ||
5527 | return rc; | |
5528 | } | |
5529 | ||
5530 | int | |
d1433418 PS |
5531 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5532 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5533 | { |
5534 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5535 | struct file_end_of_file_info *parm_data; |
5536 | int rc = 0; | |
1da177e4 LT |
5537 | __u16 params, param_offset, offset, byte_count, count; |
5538 | ||
f96637be JP |
5539 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5540 | (long long)size); | |
cd63499c SF |
5541 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5542 | ||
1da177e4 LT |
5543 | if (rc) |
5544 | return rc; | |
5545 | ||
d1433418 PS |
5546 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5547 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5548 | |
1da177e4 LT |
5549 | params = 6; |
5550 | pSMB->MaxSetupCount = 0; | |
5551 | pSMB->Reserved = 0; | |
5552 | pSMB->Flags = 0; | |
5553 | pSMB->Timeout = 0; | |
5554 | pSMB->Reserved2 = 0; | |
5555 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5556 | offset = param_offset + params; | |
5557 | ||
1da177e4 LT |
5558 | count = sizeof(struct file_end_of_file_info); |
5559 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5560 | /* BB find exact max SMB PDU from sess structure BB */ |
5561 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5562 | pSMB->SetupCount = 1; |
5563 | pSMB->Reserved3 = 0; | |
5564 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5565 | byte_count = 3 /* pad */ + params + count; | |
5566 | pSMB->DataCount = cpu_to_le16(count); | |
5567 | pSMB->ParameterCount = cpu_to_le16(params); | |
5568 | pSMB->TotalDataCount = pSMB->DataCount; | |
5569 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5570 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5571 | parm_data = | |
50c2f753 SF |
5572 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5573 | + offset); | |
1da177e4 LT |
5574 | pSMB->DataOffset = cpu_to_le16(offset); |
5575 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5576 | pSMB->Fid = cfile->fid.netfid; |
5577 | if (set_allocation) { | |
1da177e4 LT |
5578 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5579 | pSMB->InformationLevel = | |
5580 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5581 | else | |
5582 | pSMB->InformationLevel = | |
5583 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5584 | } else /* Set File Size */ { |
1da177e4 LT |
5585 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5586 | pSMB->InformationLevel = | |
50c2f753 | 5587 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5588 | else |
5589 | pSMB->InformationLevel = | |
50c2f753 | 5590 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5591 | } |
5592 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5593 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5594 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5595 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5596 | cifs_small_buf_release(pSMB); |
1da177e4 | 5597 | if (rc) { |
f96637be JP |
5598 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5599 | rc); | |
1da177e4 LT |
5600 | } |
5601 | ||
50c2f753 | 5602 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5603 | since file handle passed in no longer valid */ |
5604 | ||
5605 | return rc; | |
5606 | } | |
5607 | ||
50c2f753 | 5608 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5609 | an open handle, rather than by pathname - this is awkward due to |
5610 | potential access conflicts on the open, but it is unavoidable for these | |
5611 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5612 | time and resort to the original setpathinfo level which takes the ancient | |
5613 | DOS time format with 2 second granularity */ | |
5614 | int | |
6d5786a3 | 5615 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5616 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5617 | { |
5618 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5619 | char *data_offset; |
5620 | int rc = 0; | |
1da177e4 LT |
5621 | __u16 params, param_offset, offset, byte_count, count; |
5622 | ||
f96637be | 5623 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5624 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5625 | ||
1da177e4 LT |
5626 | if (rc) |
5627 | return rc; | |
5628 | ||
2dd2dfa0 JL |
5629 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5630 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5631 | |
1da177e4 LT |
5632 | params = 6; |
5633 | pSMB->MaxSetupCount = 0; | |
5634 | pSMB->Reserved = 0; | |
5635 | pSMB->Flags = 0; | |
5636 | pSMB->Timeout = 0; | |
5637 | pSMB->Reserved2 = 0; | |
5638 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5639 | offset = param_offset + params; | |
5640 | ||
b2a3ad9c JL |
5641 | data_offset = (char *)pSMB + |
5642 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5643 | |
26f57364 | 5644 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5645 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5646 | /* BB find max SMB PDU from sess */ |
5647 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5648 | pSMB->SetupCount = 1; |
5649 | pSMB->Reserved3 = 0; | |
5650 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5651 | byte_count = 3 /* pad */ + params + count; | |
5652 | pSMB->DataCount = cpu_to_le16(count); | |
5653 | pSMB->ParameterCount = cpu_to_le16(params); | |
5654 | pSMB->TotalDataCount = pSMB->DataCount; | |
5655 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5656 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5657 | pSMB->DataOffset = cpu_to_le16(offset); | |
5658 | pSMB->Fid = fid; | |
5659 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5660 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5661 | else | |
5662 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5663 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5664 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5665 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5666 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5667 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5668 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5669 | if (rc) |
f96637be JP |
5670 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5671 | rc); | |
1da177e4 | 5672 | |
50c2f753 | 5673 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5674 | since file handle passed in no longer valid */ |
5675 | ||
5676 | return rc; | |
5677 | } | |
5678 | ||
6d22f098 | 5679 | int |
6d5786a3 | 5680 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5681 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5682 | { | |
5683 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5684 | char *data_offset; | |
5685 | int rc = 0; | |
5686 | __u16 params, param_offset, offset, byte_count, count; | |
5687 | ||
f96637be | 5688 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5689 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5690 | ||
5691 | if (rc) | |
5692 | return rc; | |
5693 | ||
5694 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5695 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5696 | ||
5697 | params = 6; | |
5698 | pSMB->MaxSetupCount = 0; | |
5699 | pSMB->Reserved = 0; | |
5700 | pSMB->Flags = 0; | |
5701 | pSMB->Timeout = 0; | |
5702 | pSMB->Reserved2 = 0; | |
5703 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5704 | offset = param_offset + params; | |
5705 | ||
5706 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5707 | ||
5708 | count = 1; | |
5709 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5710 | /* BB find max SMB PDU from sess */ | |
5711 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5712 | pSMB->SetupCount = 1; | |
5713 | pSMB->Reserved3 = 0; | |
5714 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5715 | byte_count = 3 /* pad */ + params + count; | |
5716 | pSMB->DataCount = cpu_to_le16(count); | |
5717 | pSMB->ParameterCount = cpu_to_le16(params); | |
5718 | pSMB->TotalDataCount = pSMB->DataCount; | |
5719 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5720 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5721 | pSMB->DataOffset = cpu_to_le16(offset); | |
5722 | pSMB->Fid = fid; | |
5723 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5724 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5725 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5726 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5727 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5728 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5729 | cifs_small_buf_release(pSMB); |
6d22f098 | 5730 | if (rc) |
f96637be | 5731 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5732 | |
5733 | return rc; | |
5734 | } | |
1da177e4 LT |
5735 | |
5736 | int | |
6d5786a3 | 5737 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5738 | const char *fileName, const FILE_BASIC_INFO *data, |
5739 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5740 | { |
5741 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5742 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5743 | int name_len; | |
5744 | int rc = 0; | |
5745 | int bytes_returned = 0; | |
5746 | char *data_offset; | |
5747 | __u16 params, param_offset, offset, byte_count, count; | |
5748 | ||
f96637be | 5749 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5750 | |
5751 | SetTimesRetry: | |
5752 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5753 | (void **) &pSMBr); | |
5754 | if (rc) | |
5755 | return rc; | |
5756 | ||
5757 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5758 | name_len = | |
acbbb76a SF |
5759 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5760 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5761 | name_len++; /* trailing null */ |
5762 | name_len *= 2; | |
50c2f753 | 5763 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5764 | name_len = strnlen(fileName, PATH_MAX); |
5765 | name_len++; /* trailing null */ | |
5766 | strncpy(pSMB->FileName, fileName, name_len); | |
5767 | } | |
5768 | ||
5769 | params = 6 + name_len; | |
26f57364 | 5770 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5771 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5772 | /* BB find max SMB PDU from sess structure BB */ |
5773 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5774 | pSMB->MaxSetupCount = 0; |
5775 | pSMB->Reserved = 0; | |
5776 | pSMB->Flags = 0; | |
5777 | pSMB->Timeout = 0; | |
5778 | pSMB->Reserved2 = 0; | |
5779 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5780 | InformationLevel) - 4; |
1da177e4 LT |
5781 | offset = param_offset + params; |
5782 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5783 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5784 | pSMB->DataOffset = cpu_to_le16(offset); | |
5785 | pSMB->SetupCount = 1; | |
5786 | pSMB->Reserved3 = 0; | |
5787 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5788 | byte_count = 3 /* pad */ + params + count; | |
5789 | ||
5790 | pSMB->DataCount = cpu_to_le16(count); | |
5791 | pSMB->ParameterCount = cpu_to_le16(params); | |
5792 | pSMB->TotalDataCount = pSMB->DataCount; | |
5793 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5794 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5795 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5796 | else | |
5797 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5798 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5799 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5800 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5801 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5802 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5803 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5804 | if (rc) |
f96637be | 5805 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5806 | |
5807 | cifs_buf_release(pSMB); | |
5808 | ||
5809 | if (rc == -EAGAIN) | |
5810 | goto SetTimesRetry; | |
5811 | ||
5812 | return rc; | |
5813 | } | |
5814 | ||
5815 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5816 | /* Can be used to set attributes */ | |
5817 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5818 | handling it anyway and NT4 was what we thought it would be needed for | |
5819 | Do not delete it until we prove whether needed for Win9x though */ | |
5820 | int | |
6d5786a3 | 5821 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5822 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5823 | { | |
5824 | SETATTR_REQ *pSMB = NULL; | |
5825 | SETATTR_RSP *pSMBr = NULL; | |
5826 | int rc = 0; | |
5827 | int bytes_returned; | |
5828 | int name_len; | |
5829 | ||
f96637be | 5830 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5831 | |
5832 | SetAttrLgcyRetry: | |
5833 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5834 | (void **) &pSMBr); | |
5835 | if (rc) | |
5836 | return rc; | |
5837 | ||
5838 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5839 | name_len = | |
acbbb76a SF |
5840 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5841 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5842 | name_len++; /* trailing null */ |
5843 | name_len *= 2; | |
50c2f753 | 5844 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5845 | name_len = strnlen(fileName, PATH_MAX); |
5846 | name_len++; /* trailing null */ | |
5847 | strncpy(pSMB->fileName, fileName, name_len); | |
5848 | } | |
5849 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5850 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5851 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5852 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5853 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5854 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5855 | if (rc) |
f96637be | 5856 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5857 | |
5858 | cifs_buf_release(pSMB); | |
5859 | ||
5860 | if (rc == -EAGAIN) | |
5861 | goto SetAttrLgcyRetry; | |
5862 | ||
5863 | return rc; | |
5864 | } | |
5865 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5866 | ||
654cf14a JL |
5867 | static void |
5868 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5869 | const struct cifs_unix_set_info_args *args) | |
5870 | { | |
49418b2c | 5871 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5872 | u64 mode = args->mode; |
5873 | ||
49418b2c EB |
5874 | if (uid_valid(args->uid)) |
5875 | uid = from_kuid(&init_user_ns, args->uid); | |
5876 | if (gid_valid(args->gid)) | |
5877 | gid = from_kgid(&init_user_ns, args->gid); | |
5878 | ||
654cf14a JL |
5879 | /* |
5880 | * Samba server ignores set of file size to zero due to bugs in some | |
5881 | * older clients, but we should be precise - we use SetFileSize to | |
5882 | * set file size and do not want to truncate file size to zero | |
25985edc | 5883 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5884 | * zero instead of -1 here |
5885 | */ | |
5886 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5887 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5888 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5889 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5890 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5891 | data_offset->Uid = cpu_to_le64(uid); |
5892 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5893 | /* better to leave device as zero when it is */ |
5894 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5895 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5896 | data_offset->Permissions = cpu_to_le64(mode); | |
5897 | ||
5898 | if (S_ISREG(mode)) | |
5899 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5900 | else if (S_ISDIR(mode)) | |
5901 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5902 | else if (S_ISLNK(mode)) | |
5903 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5904 | else if (S_ISCHR(mode)) | |
5905 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5906 | else if (S_ISBLK(mode)) | |
5907 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5908 | else if (S_ISFIFO(mode)) | |
5909 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5910 | else if (S_ISSOCK(mode)) | |
5911 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5912 | } | |
5913 | ||
3bbeeb3c | 5914 | int |
6d5786a3 | 5915 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5916 | const struct cifs_unix_set_info_args *args, |
5917 | u16 fid, u32 pid_of_opener) | |
5918 | { | |
5919 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5920 | char *data_offset; |
3bbeeb3c JL |
5921 | int rc = 0; |
5922 | u16 params, param_offset, offset, byte_count, count; | |
5923 | ||
f96637be | 5924 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5925 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5926 | ||
5927 | if (rc) | |
5928 | return rc; | |
5929 | ||
5930 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5931 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5932 | ||
5933 | params = 6; | |
5934 | pSMB->MaxSetupCount = 0; | |
5935 | pSMB->Reserved = 0; | |
5936 | pSMB->Flags = 0; | |
5937 | pSMB->Timeout = 0; | |
5938 | pSMB->Reserved2 = 0; | |
5939 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5940 | offset = param_offset + params; | |
5941 | ||
b2a3ad9c JL |
5942 | data_offset = (char *)pSMB + |
5943 | offsetof(struct smb_hdr, Protocol) + offset; | |
5944 | ||
3bbeeb3c JL |
5945 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5946 | ||
5947 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5948 | /* BB find max SMB PDU from sess */ | |
5949 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5950 | pSMB->SetupCount = 1; | |
5951 | pSMB->Reserved3 = 0; | |
5952 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5953 | byte_count = 3 /* pad */ + params + count; | |
5954 | pSMB->DataCount = cpu_to_le16(count); | |
5955 | pSMB->ParameterCount = cpu_to_le16(params); | |
5956 | pSMB->TotalDataCount = pSMB->DataCount; | |
5957 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5958 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5959 | pSMB->DataOffset = cpu_to_le16(offset); | |
5960 | pSMB->Fid = fid; | |
5961 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5962 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5963 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5964 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5965 | ||
b2a3ad9c | 5966 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5967 | |
792af7b0 | 5968 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5969 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 5970 | if (rc) |
f96637be JP |
5971 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5972 | rc); | |
3bbeeb3c JL |
5973 | |
5974 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5975 | since file handle passed in no longer valid */ | |
5976 | ||
5977 | return rc; | |
5978 | } | |
5979 | ||
1da177e4 | 5980 | int |
6d5786a3 | 5981 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5982 | const char *file_name, |
01ea95e3 JL |
5983 | const struct cifs_unix_set_info_args *args, |
5984 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5985 | { |
5986 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5987 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5988 | int name_len; | |
5989 | int rc = 0; | |
5990 | int bytes_returned = 0; | |
5991 | FILE_UNIX_BASIC_INFO *data_offset; | |
5992 | __u16 params, param_offset, offset, count, byte_count; | |
5993 | ||
f96637be | 5994 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5995 | setPermsRetry: |
5996 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5997 | (void **) &pSMBr); | |
5998 | if (rc) | |
5999 | return rc; | |
6000 | ||
6001 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6002 | name_len = | |
ff691e96 | 6003 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6004 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6005 | name_len++; /* trailing null */ |
6006 | name_len *= 2; | |
3e87d803 | 6007 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6008 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6009 | name_len++; /* trailing null */ |
ff691e96 | 6010 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6011 | } |
6012 | ||
6013 | params = 6 + name_len; | |
26f57364 | 6014 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6015 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6016 | /* BB find max SMB PDU from sess structure BB */ |
6017 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6018 | pSMB->MaxSetupCount = 0; |
6019 | pSMB->Reserved = 0; | |
6020 | pSMB->Flags = 0; | |
6021 | pSMB->Timeout = 0; | |
6022 | pSMB->Reserved2 = 0; | |
6023 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6024 | InformationLevel) - 4; |
1da177e4 LT |
6025 | offset = param_offset + params; |
6026 | data_offset = | |
6027 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6028 | offset); | |
6029 | memset(data_offset, 0, count); | |
6030 | pSMB->DataOffset = cpu_to_le16(offset); | |
6031 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6032 | pSMB->SetupCount = 1; | |
6033 | pSMB->Reserved3 = 0; | |
6034 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6035 | byte_count = 3 /* pad */ + params + count; | |
6036 | pSMB->ParameterCount = cpu_to_le16(params); | |
6037 | pSMB->DataCount = cpu_to_le16(count); | |
6038 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6039 | pSMB->TotalDataCount = pSMB->DataCount; | |
6040 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6041 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6042 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6043 | |
654cf14a | 6044 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6045 | |
6046 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6047 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6048 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6049 | if (rc) |
f96637be | 6050 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6051 | |
0d817bc0 | 6052 | cifs_buf_release(pSMB); |
1da177e4 LT |
6053 | if (rc == -EAGAIN) |
6054 | goto setPermsRetry; | |
6055 | return rc; | |
6056 | } | |
6057 | ||
1da177e4 | 6058 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6059 | /* |
6060 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6061 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6062 | * it looks for that attribute name and stuffs that value into the EAData | |
6063 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6064 | * buffer. In both cases, the return value is either the length of the | |
6065 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6066 | * the data isn't copied to it, but the length is returned. | |
6067 | */ | |
1da177e4 | 6068 | ssize_t |
6d5786a3 | 6069 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6070 | const unsigned char *searchName, const unsigned char *ea_name, |
6071 | char *EAData, size_t buf_size, | |
67b4c889 | 6072 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6073 | { |
6074 | /* BB assumes one setup word */ | |
6075 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6076 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
6077 | int remap = cifs_remap(cifs_sb); |
6078 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
6079 | int rc = 0; |
6080 | int bytes_returned; | |
6e462b9f | 6081 | int list_len; |
f0d3868b | 6082 | struct fealist *ea_response_data; |
50c2f753 SF |
6083 | struct fea *temp_fea; |
6084 | char *temp_ptr; | |
0cd126b5 | 6085 | char *end_of_smb; |
f0d3868b | 6086 | __u16 params, byte_count, data_offset; |
5980fc96 | 6087 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6088 | |
f96637be | 6089 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6090 | QAllEAsRetry: |
6091 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6092 | (void **) &pSMBr); | |
6093 | if (rc) | |
6094 | return rc; | |
6095 | ||
6096 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6097 | list_len = |
acbbb76a SF |
6098 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6099 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6100 | list_len++; /* trailing null */ |
6101 | list_len *= 2; | |
1da177e4 | 6102 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6103 | list_len = strnlen(searchName, PATH_MAX); |
6104 | list_len++; /* trailing null */ | |
6105 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6106 | } |
6107 | ||
6e462b9f | 6108 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6109 | pSMB->TotalDataCount = 0; |
6110 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6111 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6112 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6113 | pSMB->MaxSetupCount = 0; |
6114 | pSMB->Reserved = 0; | |
6115 | pSMB->Flags = 0; | |
6116 | pSMB->Timeout = 0; | |
6117 | pSMB->Reserved2 = 0; | |
6118 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6119 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6120 | pSMB->DataCount = 0; |
6121 | pSMB->DataOffset = 0; | |
6122 | pSMB->SetupCount = 1; | |
6123 | pSMB->Reserved3 = 0; | |
6124 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6125 | byte_count = params + 1 /* pad */ ; | |
6126 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6127 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6128 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6129 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6130 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6131 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6132 | ||
6133 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6134 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6135 | if (rc) { | |
f96637be | 6136 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6137 | goto QAllEAsOut; |
6138 | } | |
1da177e4 | 6139 | |
f0d3868b JL |
6140 | |
6141 | /* BB also check enough total bytes returned */ | |
6142 | /* BB we need to improve the validity checking | |
6143 | of these trans2 responses */ | |
6144 | ||
6145 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6146 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6147 | rc = -EIO; /* bad smb */ |
6148 | goto QAllEAsOut; | |
6149 | } | |
6150 | ||
6151 | /* check that length of list is not more than bcc */ | |
6152 | /* check that each entry does not go beyond length | |
6153 | of list */ | |
6154 | /* check that each element of each entry does not | |
6155 | go beyond end of list */ | |
6156 | /* validate_trans2_offsets() */ | |
6157 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6158 | ||
6159 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6160 | ea_response_data = (struct fealist *) | |
6161 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6162 | ||
6e462b9f | 6163 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6164 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6165 | if (list_len <= 8) { |
f96637be | 6166 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6167 | /* didn't find the named attribute */ |
6168 | if (ea_name) | |
6169 | rc = -ENODATA; | |
f0d3868b JL |
6170 | goto QAllEAsOut; |
6171 | } | |
6172 | ||
0cd126b5 | 6173 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6174 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6175 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6176 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6177 | rc = -EIO; |
6178 | goto QAllEAsOut; | |
6179 | } | |
6180 | ||
f0d3868b | 6181 | /* account for ea list len */ |
6e462b9f | 6182 | list_len -= 4; |
f0d3868b JL |
6183 | temp_fea = ea_response_data->list; |
6184 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6185 | while (list_len > 0) { |
122ca007 | 6186 | unsigned int name_len; |
f0d3868b | 6187 | __u16 value_len; |
0cd126b5 | 6188 | |
6e462b9f | 6189 | list_len -= 4; |
f0d3868b | 6190 | temp_ptr += 4; |
0cd126b5 JL |
6191 | /* make sure we can read name_len and value_len */ |
6192 | if (list_len < 0) { | |
f96637be | 6193 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6194 | rc = -EIO; |
6195 | goto QAllEAsOut; | |
6196 | } | |
6197 | ||
6198 | name_len = temp_fea->name_len; | |
6199 | value_len = le16_to_cpu(temp_fea->value_len); | |
6200 | list_len -= name_len + 1 + value_len; | |
6201 | if (list_len < 0) { | |
f96637be | 6202 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6203 | rc = -EIO; |
6204 | goto QAllEAsOut; | |
6205 | } | |
6206 | ||
31c0519f | 6207 | if (ea_name) { |
91d065c4 | 6208 | if (ea_name_len == name_len && |
ac423446 | 6209 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6210 | temp_ptr += name_len + 1; |
6211 | rc = value_len; | |
6212 | if (buf_size == 0) | |
6213 | goto QAllEAsOut; | |
6214 | if ((size_t)value_len > buf_size) { | |
6215 | rc = -ERANGE; | |
6216 | goto QAllEAsOut; | |
6217 | } | |
6218 | memcpy(EAData, temp_ptr, value_len); | |
6219 | goto QAllEAsOut; | |
6220 | } | |
f0d3868b | 6221 | } else { |
31c0519f JL |
6222 | /* account for prefix user. and trailing null */ |
6223 | rc += (5 + 1 + name_len); | |
6224 | if (rc < (int) buf_size) { | |
6225 | memcpy(EAData, "user.", 5); | |
6226 | EAData += 5; | |
6227 | memcpy(EAData, temp_ptr, name_len); | |
6228 | EAData += name_len; | |
6229 | /* null terminate name */ | |
6230 | *EAData = 0; | |
6231 | ++EAData; | |
6232 | } else if (buf_size == 0) { | |
6233 | /* skip copy - calc size only */ | |
6234 | } else { | |
6235 | /* stop before overrun buffer */ | |
6236 | rc = -ERANGE; | |
6237 | break; | |
6238 | } | |
1da177e4 | 6239 | } |
0cd126b5 | 6240 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6241 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6242 | } |
f0d3868b | 6243 | |
31c0519f JL |
6244 | /* didn't find the named attribute */ |
6245 | if (ea_name) | |
6246 | rc = -ENODATA; | |
6247 | ||
f0d3868b | 6248 | QAllEAsOut: |
0d817bc0 | 6249 | cifs_buf_release(pSMB); |
1da177e4 LT |
6250 | if (rc == -EAGAIN) |
6251 | goto QAllEAsRetry; | |
6252 | ||
6253 | return (ssize_t)rc; | |
6254 | } | |
6255 | ||
1da177e4 | 6256 | int |
6d5786a3 PS |
6257 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6258 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6259 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6260 | int remap) | |
1da177e4 LT |
6261 | { |
6262 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6263 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6264 | struct fealist *parm_data; | |
6265 | int name_len; | |
6266 | int rc = 0; | |
6267 | int bytes_returned = 0; | |
6268 | __u16 params, param_offset, byte_count, offset, count; | |
6269 | ||
f96637be | 6270 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6271 | SetEARetry: |
6272 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6273 | (void **) &pSMBr); | |
6274 | if (rc) | |
6275 | return rc; | |
6276 | ||
6277 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6278 | name_len = | |
acbbb76a SF |
6279 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6280 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6281 | name_len++; /* trailing null */ |
6282 | name_len *= 2; | |
50c2f753 | 6283 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6284 | name_len = strnlen(fileName, PATH_MAX); |
6285 | name_len++; /* trailing null */ | |
6286 | strncpy(pSMB->FileName, fileName, name_len); | |
6287 | } | |
6288 | ||
6289 | params = 6 + name_len; | |
6290 | ||
6291 | /* done calculating parms using name_len of file name, | |
6292 | now use name_len to calculate length of ea name | |
6293 | we are going to create in the inode xattrs */ | |
790fe579 | 6294 | if (ea_name == NULL) |
1da177e4 LT |
6295 | name_len = 0; |
6296 | else | |
50c2f753 | 6297 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6298 | |
dae5dbdb | 6299 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6300 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6301 | /* BB find max SMB PDU from sess */ |
6302 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6303 | pSMB->MaxSetupCount = 0; |
6304 | pSMB->Reserved = 0; | |
6305 | pSMB->Flags = 0; | |
6306 | pSMB->Timeout = 0; | |
6307 | pSMB->Reserved2 = 0; | |
6308 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6309 | InformationLevel) - 4; |
1da177e4 LT |
6310 | offset = param_offset + params; |
6311 | pSMB->InformationLevel = | |
6312 | cpu_to_le16(SMB_SET_FILE_EA); | |
6313 | ||
6314 | parm_data = | |
6315 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6316 | offset); | |
6317 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6318 | pSMB->DataOffset = cpu_to_le16(offset); | |
6319 | pSMB->SetupCount = 1; | |
6320 | pSMB->Reserved3 = 0; | |
6321 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6322 | byte_count = 3 /* pad */ + params + count; | |
6323 | pSMB->DataCount = cpu_to_le16(count); | |
6324 | parm_data->list_len = cpu_to_le32(count); | |
6325 | parm_data->list[0].EA_flags = 0; | |
6326 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6327 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6328 | /* EA names are always ASCII */ |
790fe579 | 6329 | if (ea_name) |
50c2f753 | 6330 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6331 | parm_data->list[0].name[name_len] = 0; |
6332 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6333 | /* caller ensures that ea_value_len is less than 64K but | |
6334 | we need to ensure that it fits within the smb */ | |
6335 | ||
50c2f753 SF |
6336 | /*BB add length check to see if it would fit in |
6337 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6338 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6339 | if (ea_value_len) | |
50c2f753 SF |
6340 | memcpy(parm_data->list[0].name+name_len+1, |
6341 | ea_value, ea_value_len); | |
1da177e4 LT |
6342 | |
6343 | pSMB->TotalDataCount = pSMB->DataCount; | |
6344 | pSMB->ParameterCount = cpu_to_le16(params); | |
6345 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6346 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6347 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6348 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6349 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6350 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6351 | if (rc) |
f96637be | 6352 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6353 | |
6354 | cifs_buf_release(pSMB); | |
6355 | ||
6356 | if (rc == -EAGAIN) | |
6357 | goto SetEARetry; | |
6358 | ||
6359 | return rc; | |
6360 | } | |
1da177e4 | 6361 | #endif |
0eff0e26 SF |
6362 | |
6363 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6364 | /* | |
6365 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6366 | * to allow network clients (such as Windows) to display updated | |
6367 | * lists of files in directory listings automatically when | |
6368 | * files are added by one user when another user has the | |
6369 | * same directory open on their desktop. The Linux cifs kernel | |
6370 | * client hooked into the kernel side of this interface for | |
6371 | * the same reason, but ironically when the VFS moved from | |
6372 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6373 | * network file system clients (the most obvious use case | |
6374 | * for notify interfaces is when multiple users can update | |
6375 | * the contents of the same directory - exactly what network | |
6376 | * file systems can do) although the server (Samba) could | |
6377 | * still use it. For the short term we leave the worker | |
6378 | * function ifdeffed out (below) until inotify is fixed | |
6379 | * in the VFS to make it easier to plug in network file | |
6380 | * system clients. If inotify turns out to be permanently | |
6381 | * incompatible for network fs clients, we could instead simply | |
6382 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6383 | */ | |
6d5786a3 | 6384 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6385 | const int notify_subdirs, const __u16 netfid, |
6386 | __u32 filter, struct file *pfile, int multishot, | |
6387 | const struct nls_table *nls_codepage) | |
6388 | { | |
6389 | int rc = 0; | |
6390 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6391 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6392 | struct dir_notify_req *dnotify_req; | |
6393 | int bytes_returned; | |
6394 | ||
f96637be | 6395 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6396 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6397 | (void **) &pSMBr); | |
6398 | if (rc) | |
6399 | return rc; | |
6400 | ||
6401 | pSMB->TotalParameterCount = 0 ; | |
6402 | pSMB->TotalDataCount = 0; | |
6403 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6404 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6405 | pSMB->MaxSetupCount = 4; |
6406 | pSMB->Reserved = 0; | |
6407 | pSMB->ParameterOffset = 0; | |
6408 | pSMB->DataCount = 0; | |
6409 | pSMB->DataOffset = 0; | |
6410 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6411 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6412 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6413 | if (notify_subdirs) | |
6414 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6415 | pSMB->Reserved2 = 0; | |
6416 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6417 | pSMB->Fid = netfid; /* file handle always le */ | |
6418 | pSMB->ByteCount = 0; | |
6419 | ||
6420 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6421 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6422 | CIFS_ASYNC_OP); | |
6423 | if (rc) { | |
f96637be | 6424 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6425 | } else { |
6426 | /* Add file to outstanding requests */ | |
6427 | /* BB change to kmem cache alloc */ | |
6428 | dnotify_req = kmalloc( | |
6429 | sizeof(struct dir_notify_req), | |
6430 | GFP_KERNEL); | |
6431 | if (dnotify_req) { | |
6432 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6433 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6434 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6435 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6436 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6437 | dnotify_req->netfid = netfid; | |
6438 | dnotify_req->pfile = pfile; | |
6439 | dnotify_req->filter = filter; | |
6440 | dnotify_req->multishot = multishot; | |
6441 | spin_lock(&GlobalMid_Lock); | |
6442 | list_add_tail(&dnotify_req->lhead, | |
6443 | &GlobalDnotifyReqList); | |
6444 | spin_unlock(&GlobalMid_Lock); | |
6445 | } else | |
6446 | rc = -ENOMEM; | |
6447 | } | |
6448 | cifs_buf_release(pSMB); | |
6449 | return rc; | |
6450 | } | |
6451 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |