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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); |
76e75270 SC |
181 | |
182 | /* | |
183 | * Recheck after acquire mutex. If another thread is negotiating | |
184 | * and the server never sends an answer the socket will be closed | |
185 | * and tcpStatus set to reconnect. | |
186 | */ | |
187 | if (server->tcpStatus == CifsNeedReconnect) { | |
188 | rc = -EHOSTDOWN; | |
189 | mutex_unlock(&ses->session_mutex); | |
190 | goto out; | |
191 | } | |
192 | ||
198b5682 JL |
193 | rc = cifs_negotiate_protocol(0, ses); |
194 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
195 | rc = cifs_setup_session(0, ses, nls_codepage); |
196 | ||
197 | /* do we need to reconnect tcon? */ | |
198 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 199 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
200 | goto out; |
201 | } | |
202 | ||
aa24d1e9 | 203 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 204 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 205 | mutex_unlock(&ses->session_mutex); |
f96637be | 206 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 JL |
207 | |
208 | if (rc) | |
209 | goto out; | |
210 | ||
9162ab20 JL |
211 | atomic_inc(&tconInfoReconnectCount); |
212 | ||
213 | /* tell server Unix caps we support */ | |
214 | if (ses->capabilities & CAP_UNIX) | |
215 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
216 | ||
217 | /* | |
218 | * Removed call to reopen open files here. It is safer (and faster) to | |
219 | * reopen files one at a time as needed in read and write. | |
220 | * | |
221 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
222 | */ | |
223 | ||
224 | out: | |
225 | /* | |
226 | * Check if handle based operation so we know whether we can continue | |
227 | * or not without returning to caller to reset file handle | |
228 | */ | |
229 | switch (smb_command) { | |
230 | case SMB_COM_READ_ANDX: | |
231 | case SMB_COM_WRITE_ANDX: | |
232 | case SMB_COM_CLOSE: | |
233 | case SMB_COM_FIND_CLOSE2: | |
234 | case SMB_COM_LOCKING_ANDX: | |
235 | rc = -EAGAIN; | |
236 | } | |
237 | ||
238 | unload_nls(nls_codepage); | |
239 | return rc; | |
240 | } | |
241 | ||
ad7a2926 SF |
242 | /* Allocate and return pointer to an SMB request buffer, and set basic |
243 | SMB information in the SMB header. If the return code is zero, this | |
244 | function must have filled in request_buf pointer */ | |
1da177e4 | 245 | static int |
96daf2b0 | 246 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 247 | void **request_buf) |
1da177e4 | 248 | { |
f569599a | 249 | int rc; |
1da177e4 | 250 | |
9162ab20 | 251 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 252 | if (rc) |
1da177e4 LT |
253 | return rc; |
254 | ||
255 | *request_buf = cifs_small_buf_get(); | |
256 | if (*request_buf == NULL) { | |
257 | /* BB should we add a retry in here if not a writepage? */ | |
258 | return -ENOMEM; | |
259 | } | |
260 | ||
63135e08 | 261 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 262 | tcon, wct); |
1da177e4 | 263 | |
790fe579 SF |
264 | if (tcon != NULL) |
265 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 266 | |
f569599a | 267 | return 0; |
5815449d SF |
268 | } |
269 | ||
12b3b8ff | 270 | int |
50c2f753 | 271 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 272 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
273 | { |
274 | int rc; | |
50c2f753 | 275 | struct smb_hdr *buffer; |
12b3b8ff | 276 | |
5815449d | 277 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 278 | if (rc) |
12b3b8ff SF |
279 | return rc; |
280 | ||
04fdabe1 | 281 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 282 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
283 | if (ses->capabilities & CAP_UNICODE) |
284 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 285 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
286 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
287 | ||
288 | /* uid, tid can stay at zero as set in header assemble */ | |
289 | ||
50c2f753 | 290 | /* BB add support for turning on the signing when |
12b3b8ff SF |
291 | this function is used after 1st of session setup requests */ |
292 | ||
293 | return rc; | |
294 | } | |
1da177e4 LT |
295 | |
296 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
297 | static int | |
96daf2b0 | 298 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 299 | void **request_buf, void **response_buf) |
1da177e4 | 300 | { |
1da177e4 LT |
301 | *request_buf = cifs_buf_get(); |
302 | if (*request_buf == NULL) { | |
303 | /* BB should we add a retry in here if not a writepage? */ | |
304 | return -ENOMEM; | |
305 | } | |
306 | /* Although the original thought was we needed the response buf for */ | |
307 | /* potential retries of smb operations it turns out we can determine */ | |
308 | /* from the mid flags when the request buffer can be resent without */ | |
309 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 310 | if (response_buf) |
50c2f753 | 311 | *response_buf = *request_buf; |
1da177e4 LT |
312 | |
313 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 314 | wct); |
1da177e4 | 315 | |
790fe579 SF |
316 | if (tcon != NULL) |
317 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 318 | |
f569599a JL |
319 | return 0; |
320 | } | |
321 | ||
322 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
323 | static int | |
96daf2b0 | 324 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
325 | void **request_buf, void **response_buf) |
326 | { | |
327 | int rc; | |
328 | ||
329 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
330 | if (rc) | |
331 | return rc; | |
332 | ||
333 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
334 | } | |
335 | ||
336 | static int | |
96daf2b0 | 337 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
338 | void **request_buf, void **response_buf) |
339 | { | |
340 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
341 | return -EHOSTDOWN; | |
342 | ||
343 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
344 | } |
345 | ||
50c2f753 | 346 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 347 | { |
12df83c9 JL |
348 | unsigned int total_size; |
349 | ||
350 | /* check for plausible wct */ | |
351 | if (pSMB->hdr.WordCount < 10) | |
352 | goto vt2_err; | |
1da177e4 | 353 | |
1da177e4 | 354 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
355 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
356 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
357 | goto vt2_err; | |
358 | ||
12df83c9 JL |
359 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
360 | if (total_size >= 512) | |
361 | goto vt2_err; | |
362 | ||
fd5707e1 JL |
363 | /* check that bcc is at least as big as parms + data, and that it is |
364 | * less than negotiated smb buffer | |
365 | */ | |
12df83c9 JL |
366 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
367 | if (total_size > get_bcc(&pSMB->hdr) || | |
368 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
369 | goto vt2_err; | |
370 | ||
371 | return 0; | |
372 | vt2_err: | |
50c2f753 | 373 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 374 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 375 | return -EINVAL; |
1da177e4 | 376 | } |
690c522f | 377 | |
31d9e2bd | 378 | static int |
3f618223 | 379 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
380 | { |
381 | int rc = 0; | |
382 | u16 count; | |
383 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 384 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
385 | |
386 | count = get_bcc(&pSMBr->hdr); | |
387 | if (count < SMB1_CLIENT_GUID_SIZE) | |
388 | return -EIO; | |
389 | ||
390 | spin_lock(&cifs_tcp_ses_lock); | |
391 | if (server->srv_count > 1) { | |
392 | spin_unlock(&cifs_tcp_ses_lock); | |
393 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
394 | cifs_dbg(FYI, "server UID changed\n"); | |
395 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
396 | } | |
397 | } else { | |
398 | spin_unlock(&cifs_tcp_ses_lock); | |
399 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
400 | } | |
401 | ||
402 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 403 | server->sec_ntlmssp = true; |
31d9e2bd JL |
404 | } else { |
405 | count -= SMB1_CLIENT_GUID_SIZE; | |
406 | rc = decode_negTokenInit( | |
407 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
408 | if (rc != 1) | |
409 | return -EINVAL; | |
31d9e2bd JL |
410 | } |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
9ddec561 | 415 | int |
38d77c50 | 416 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 417 | { |
50285882 JL |
418 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
419 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
420 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
421 | ||
422 | /* | |
423 | * Is signing required by mnt options? If not then check | |
424 | * global_secflags to see if it is there. | |
425 | */ | |
426 | if (!mnt_sign_required) | |
427 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
428 | CIFSSEC_MUST_SIGN); | |
429 | ||
430 | /* | |
431 | * If signing is required then it's automatically enabled too, | |
432 | * otherwise, check to see if the secflags allow it. | |
433 | */ | |
434 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
435 | (global_secflags & CIFSSEC_MAY_SIGN); | |
436 | ||
437 | /* If server requires signing, does client allow it? */ | |
438 | if (srv_sign_required) { | |
439 | if (!mnt_sign_enabled) { | |
440 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); | |
441 | return -ENOTSUPP; | |
9ddec561 | 442 | } |
38d77c50 JL |
443 | server->sign = true; |
444 | } | |
445 | ||
446 | /* If client requires signing, does server allow it? */ | |
447 | if (mnt_sign_required) { | |
448 | if (!srv_sign_enabled) { | |
449 | cifs_dbg(VFS, "Server does not support signing!"); | |
450 | return -ENOTSUPP; | |
451 | } | |
452 | server->sign = true; | |
9ddec561 JL |
453 | } |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
2190eca1 JL |
458 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
459 | static int | |
3f618223 | 460 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
461 | { |
462 | __s16 tmp; | |
463 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
464 | ||
465 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
466 | return -EOPNOTSUPP; | |
467 | ||
2190eca1 JL |
468 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
469 | server->maxReq = min_t(unsigned int, | |
470 | le16_to_cpu(rsp->MaxMpxCount), | |
471 | cifs_max_pending); | |
472 | set_credits(server, server->maxReq); | |
473 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
2190eca1 JL |
474 | /* even though we do not use raw we might as well set this |
475 | accurately, in case we ever find a need for it */ | |
476 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
477 | server->max_rw = 0xFF00; | |
478 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
479 | } else { | |
480 | server->max_rw = 0;/* do not need to use raw anyway */ | |
481 | server->capabilities = CAP_MPX_MODE; | |
482 | } | |
483 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
484 | if (tmp == -1) { | |
485 | /* OS/2 often does not set timezone therefore | |
486 | * we must use server time to calc time zone. | |
487 | * Could deviate slightly from the right zone. | |
488 | * Smallest defined timezone difference is 15 minutes | |
489 | * (i.e. Nepal). Rounding up/down is done to match | |
490 | * this requirement. | |
491 | */ | |
492 | int val, seconds, remain, result; | |
e37fea58 DD |
493 | struct timespec ts; |
494 | unsigned long utc = ktime_get_real_seconds(); | |
2190eca1 JL |
495 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
496 | rsp->SrvTime.Time, 0); | |
497 | cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n", | |
e37fea58 DD |
498 | (int)ts.tv_sec, (int)utc, |
499 | (int)(utc - ts.tv_sec)); | |
500 | val = (int)(utc - ts.tv_sec); | |
2190eca1 JL |
501 | seconds = abs(val); |
502 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
503 | remain = seconds % MIN_TZ_ADJ; | |
504 | if (remain >= (MIN_TZ_ADJ / 2)) | |
505 | result += MIN_TZ_ADJ; | |
506 | if (val < 0) | |
507 | result = -result; | |
508 | server->timeAdj = result; | |
509 | } else { | |
510 | server->timeAdj = (int)tmp; | |
511 | server->timeAdj *= 60; /* also in seconds */ | |
512 | } | |
513 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
514 | ||
515 | ||
516 | /* BB get server time for time conversions and add | |
517 | code to use it and timezone since this is not UTC */ | |
518 | ||
519 | if (rsp->EncryptionKeyLength == | |
520 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
521 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
522 | CIFS_CRYPTO_KEY_SIZE); | |
523 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
524 | return -EIO; /* need cryptkey unless plain text */ | |
525 | } | |
526 | ||
527 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
528 | return 0; | |
529 | } | |
530 | #else | |
531 | static inline int | |
3f618223 | 532 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
533 | { |
534 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
535 | return -EOPNOTSUPP; | |
536 | } | |
537 | #endif | |
538 | ||
9193400b | 539 | static bool |
3f618223 | 540 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 541 | { |
3f618223 JL |
542 | switch (sectype) { |
543 | case RawNTLMSSP: | |
544 | case Kerberos: | |
9193400b | 545 | return true; |
3f618223 JL |
546 | case Unspecified: |
547 | if (global_secflags & | |
548 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
549 | return true; | |
550 | /* Fallthrough */ | |
551 | default: | |
552 | return false; | |
553 | } | |
9193400b JL |
554 | } |
555 | ||
1da177e4 | 556 | int |
286170aa | 557 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
558 | { |
559 | NEGOTIATE_REQ *pSMB; | |
560 | NEGOTIATE_RSP *pSMBr; | |
561 | int rc = 0; | |
562 | int bytes_returned; | |
3979877e | 563 | int i; |
3534b850 | 564 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
565 | u16 count; |
566 | ||
3534b850 JL |
567 | if (!server) { |
568 | WARN(1, "%s: server is NULL!\n", __func__); | |
569 | return -EIO; | |
1da177e4 | 570 | } |
3534b850 | 571 | |
1da177e4 LT |
572 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
573 | (void **) &pSMB, (void **) &pSMBr); | |
574 | if (rc) | |
575 | return rc; | |
750d1151 | 576 | |
88257360 | 577 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 578 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 579 | |
3f618223 | 580 | if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b | 581 | cifs_dbg(FYI, "Requesting extended security."); |
ac683924 SF |
582 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
583 | } | |
50c2f753 | 584 | |
3979877e | 585 | count = 0; |
50c2f753 | 586 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
587 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
588 | count += strlen(protocols[i].name) + 1; | |
589 | /* null at end of source and target buffers anyway */ | |
590 | } | |
be8e3b00 | 591 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
592 | pSMB->ByteCount = cpu_to_le16(count); |
593 | ||
594 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
595 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 596 | if (rc != 0) |
254e55ed SF |
597 | goto neg_err_exit; |
598 | ||
9bf67e51 | 599 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 600 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 601 | /* Check wct = 1 error case */ |
9bf67e51 | 602 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 603 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 604 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
605 | could not negotiate a common dialect */ |
606 | rc = -EOPNOTSUPP; | |
607 | goto neg_err_exit; | |
790fe579 | 608 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 609 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 610 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 611 | goto signing_check; |
790fe579 | 612 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
613 | /* unknown wct */ |
614 | rc = -EOPNOTSUPP; | |
615 | goto neg_err_exit; | |
616 | } | |
2190eca1 JL |
617 | /* else wct == 17, NTLM or better */ |
618 | ||
96daf2b0 SF |
619 | server->sec_mode = pSMBr->SecurityMode; |
620 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 621 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 622 | |
254e55ed SF |
623 | /* one byte, so no need to convert this or EncryptionKeyLen from |
624 | little endian */ | |
10b9b98e PS |
625 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
626 | cifs_max_pending); | |
45275789 | 627 | set_credits(server, server->maxReq); |
254e55ed | 628 | /* probably no need to store and check maxvcs */ |
c974befa | 629 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 630 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 631 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 632 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
633 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
634 | server->timeAdj *= 60; | |
31d9e2bd | 635 | |
e598d1d8 JL |
636 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
637 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 638 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 639 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
640 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
641 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 642 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 643 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 644 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 645 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
646 | } else { |
647 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 648 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 649 | } |
254e55ed SF |
650 | |
651 | signing_check: | |
9ddec561 | 652 | if (!rc) |
38d77c50 | 653 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 654 | neg_err_exit: |
4a6d87f1 | 655 | cifs_buf_release(pSMB); |
254e55ed | 656 | |
f96637be | 657 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
658 | return rc; |
659 | } | |
660 | ||
661 | int | |
2e6e02ab | 662 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
663 | { |
664 | struct smb_hdr *smb_buffer; | |
1da177e4 | 665 | int rc = 0; |
1da177e4 | 666 | |
f96637be | 667 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 668 | |
f1987b44 JL |
669 | /* BB: do we need to check this? These should never be NULL. */ |
670 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
671 | return -EIO; | |
1da177e4 | 672 | |
f1987b44 JL |
673 | /* |
674 | * No need to return error on this operation if tid invalidated and | |
675 | * closed on server already e.g. due to tcp session crashing. Also, | |
676 | * the tcon is no longer on the list, so no need to take lock before | |
677 | * checking this. | |
678 | */ | |
268875b9 | 679 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 680 | return 0; |
1da177e4 | 681 | |
50c2f753 | 682 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 683 | (void **)&smb_buffer); |
f1987b44 | 684 | if (rc) |
1da177e4 | 685 | return rc; |
133672ef | 686 | |
792af7b0 | 687 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 688 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 689 | if (rc) |
f96637be | 690 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 691 | |
50c2f753 | 692 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 693 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
694 | if (rc == -EAGAIN) |
695 | rc = 0; | |
696 | ||
697 | return rc; | |
698 | } | |
699 | ||
766fdbb5 JL |
700 | /* |
701 | * This is a no-op for now. We're not really interested in the reply, but | |
702 | * rather in the fact that the server sent one and that server->lstrp | |
703 | * gets updated. | |
704 | * | |
705 | * FIXME: maybe we should consider checking that the reply matches request? | |
706 | */ | |
707 | static void | |
708 | cifs_echo_callback(struct mid_q_entry *mid) | |
709 | { | |
710 | struct TCP_Server_Info *server = mid->callback_data; | |
711 | ||
712 | DeleteMidQEntry(mid); | |
a891f0f8 | 713 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
714 | } |
715 | ||
716 | int | |
717 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
718 | { | |
719 | ECHO_REQ *smb; | |
720 | int rc = 0; | |
738f9de5 PS |
721 | struct kvec iov[2]; |
722 | struct smb_rqst rqst = { .rq_iov = iov, | |
723 | .rq_nvec = 2 }; | |
766fdbb5 | 724 | |
f96637be | 725 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
726 | |
727 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
728 | if (rc) | |
729 | return rc; | |
730 | ||
26c9cb66 SF |
731 | if (server->capabilities & CAP_UNICODE) |
732 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
733 | ||
766fdbb5 | 734 | /* set up echo request */ |
5443d130 | 735 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
736 | smb->hdr.WordCount = 1; |
737 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 738 | put_bcc(1, &smb->hdr); |
766fdbb5 | 739 | smb->Data[0] = 'a'; |
be8e3b00 | 740 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
741 | |
742 | iov[0].iov_len = 4; | |
743 | iov[0].iov_base = smb; | |
744 | iov[1].iov_len = get_rfc1002_length(smb); | |
745 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 746 | |
9b7c18a2 | 747 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
a891f0f8 | 748 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 | 749 | if (rc) |
f96637be | 750 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
751 | |
752 | cifs_small_buf_release(smb); | |
753 | ||
754 | return rc; | |
755 | } | |
756 | ||
1da177e4 | 757 | int |
58c45c58 | 758 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 759 | { |
1da177e4 LT |
760 | LOGOFF_ANDX_REQ *pSMB; |
761 | int rc = 0; | |
1da177e4 | 762 | |
f96637be | 763 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 764 | |
14fbf50d JL |
765 | /* |
766 | * BB: do we need to check validity of ses and server? They should | |
767 | * always be valid since we have an active reference. If not, that | |
768 | * should probably be a BUG() | |
769 | */ | |
770 | if (!ses || !ses->server) | |
3b795210 SF |
771 | return -EIO; |
772 | ||
d7b619cf | 773 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
774 | if (ses->need_reconnect) |
775 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
776 | already closed due to reconnect */ | |
1da177e4 LT |
777 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
778 | if (rc) { | |
d7b619cf | 779 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
780 | return rc; |
781 | } | |
782 | ||
88257360 | 783 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 784 | |
38d77c50 JL |
785 | if (ses->server->sign) |
786 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
787 | |
788 | pSMB->hdr.Uid = ses->Suid; | |
789 | ||
790 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 791 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 792 | cifs_small_buf_release(pSMB); |
3b795210 | 793 | session_already_dead: |
d7b619cf | 794 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
795 | |
796 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 797 | since server closed smb session, no sense reporting |
1da177e4 LT |
798 | error */ |
799 | if (rc == -EAGAIN) | |
800 | rc = 0; | |
801 | return rc; | |
802 | } | |
803 | ||
2d785a50 | 804 | int |
6d5786a3 PS |
805 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
806 | const char *fileName, __u16 type, | |
807 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
808 | { |
809 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
810 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
811 | struct unlink_psx_rq *pRqD; | |
812 | int name_len; | |
813 | int rc = 0; | |
814 | int bytes_returned = 0; | |
815 | __u16 params, param_offset, offset, byte_count; | |
816 | ||
f96637be | 817 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
818 | PsxDelete: |
819 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
820 | (void **) &pSMBr); | |
821 | if (rc) | |
822 | return rc; | |
823 | ||
824 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
825 | name_len = | |
acbbb76a SF |
826 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
827 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
828 | name_len++; /* trailing null */ |
829 | name_len *= 2; | |
830 | } else { /* BB add path length overrun check */ | |
831 | name_len = strnlen(fileName, PATH_MAX); | |
832 | name_len++; /* trailing null */ | |
833 | strncpy(pSMB->FileName, fileName, name_len); | |
834 | } | |
835 | ||
836 | params = 6 + name_len; | |
837 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
838 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
839 | pSMB->MaxSetupCount = 0; | |
840 | pSMB->Reserved = 0; | |
841 | pSMB->Flags = 0; | |
842 | pSMB->Timeout = 0; | |
843 | pSMB->Reserved2 = 0; | |
844 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
845 | InformationLevel) - 4; | |
846 | offset = param_offset + params; | |
847 | ||
848 | /* Setup pointer to Request Data (inode type) */ | |
849 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
850 | pRqD->type = cpu_to_le16(type); | |
851 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
852 | pSMB->DataOffset = cpu_to_le16(offset); | |
853 | pSMB->SetupCount = 1; | |
854 | pSMB->Reserved3 = 0; | |
855 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
856 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
857 | ||
858 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
859 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
860 | pSMB->ParameterCount = cpu_to_le16(params); | |
861 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
862 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
863 | pSMB->Reserved4 = 0; | |
be8e3b00 | 864 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
865 | pSMB->ByteCount = cpu_to_le16(byte_count); |
866 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
867 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 868 | if (rc) |
f96637be | 869 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
870 | cifs_buf_release(pSMB); |
871 | ||
44c58186 | 872 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
873 | |
874 | if (rc == -EAGAIN) | |
875 | goto PsxDelete; | |
876 | ||
877 | return rc; | |
878 | } | |
879 | ||
1da177e4 | 880 | int |
ed6875e0 PS |
881 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
882 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
883 | { |
884 | DELETE_FILE_REQ *pSMB = NULL; | |
885 | DELETE_FILE_RSP *pSMBr = NULL; | |
886 | int rc = 0; | |
887 | int bytes_returned; | |
888 | int name_len; | |
2baa2682 | 889 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
890 | |
891 | DelFileRetry: | |
892 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
893 | (void **) &pSMBr); | |
894 | if (rc) | |
895 | return rc; | |
896 | ||
897 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
898 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
899 | PATH_MAX, cifs_sb->local_nls, | |
900 | remap); | |
1da177e4 LT |
901 | name_len++; /* trailing null */ |
902 | name_len *= 2; | |
09d1db5c | 903 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 904 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 905 | name_len++; /* trailing null */ |
ed6875e0 | 906 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
907 | } |
908 | pSMB->SearchAttributes = | |
909 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
910 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 911 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
912 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
913 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
914 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 915 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 916 | if (rc) |
f96637be | 917 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
918 | |
919 | cifs_buf_release(pSMB); | |
920 | if (rc == -EAGAIN) | |
921 | goto DelFileRetry; | |
922 | ||
923 | return rc; | |
924 | } | |
925 | ||
926 | int | |
f958ca5d PS |
927 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
928 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
929 | { |
930 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
931 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
932 | int rc = 0; | |
933 | int bytes_returned; | |
934 | int name_len; | |
2baa2682 | 935 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 936 | |
f96637be | 937 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
938 | RmDirRetry: |
939 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
940 | (void **) &pSMBr); | |
941 | if (rc) | |
942 | return rc; | |
943 | ||
944 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
945 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
946 | PATH_MAX, cifs_sb->local_nls, | |
947 | remap); | |
1da177e4 LT |
948 | name_len++; /* trailing null */ |
949 | name_len *= 2; | |
09d1db5c | 950 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 951 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 952 | name_len++; /* trailing null */ |
f958ca5d | 953 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
954 | } |
955 | ||
956 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 957 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
958 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
959 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
960 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 961 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 962 | if (rc) |
f96637be | 963 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
964 | |
965 | cifs_buf_release(pSMB); | |
966 | if (rc == -EAGAIN) | |
967 | goto RmDirRetry; | |
968 | return rc; | |
969 | } | |
970 | ||
971 | int | |
f436720e PS |
972 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
973 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
974 | { |
975 | int rc = 0; | |
976 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
977 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
978 | int bytes_returned; | |
979 | int name_len; | |
2baa2682 | 980 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 981 | |
f96637be | 982 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
983 | MkDirRetry: |
984 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
985 | (void **) &pSMBr); | |
986 | if (rc) | |
987 | return rc; | |
988 | ||
989 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 990 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
991 | PATH_MAX, cifs_sb->local_nls, |
992 | remap); | |
1da177e4 LT |
993 | name_len++; /* trailing null */ |
994 | name_len *= 2; | |
09d1db5c | 995 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
996 | name_len = strnlen(name, PATH_MAX); |
997 | name_len++; /* trailing null */ | |
998 | strncpy(pSMB->DirName, name, name_len); | |
999 | } | |
1000 | ||
1001 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1002 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1003 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1004 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1005 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1006 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1007 | if (rc) |
f96637be | 1008 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 1009 | |
1da177e4 LT |
1010 | cifs_buf_release(pSMB); |
1011 | if (rc == -EAGAIN) | |
1012 | goto MkDirRetry; | |
1013 | return rc; | |
1014 | } | |
1015 | ||
2dd29d31 | 1016 | int |
6d5786a3 PS |
1017 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1018 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1019 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1020 | const char *name, const struct nls_table *nls_codepage, | |
1021 | int remap) | |
2dd29d31 SF |
1022 | { |
1023 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1024 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1025 | int name_len; | |
1026 | int rc = 0; | |
1027 | int bytes_returned = 0; | |
2dd29d31 | 1028 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1029 | OPEN_PSX_REQ *pdata; |
1030 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1031 | |
f96637be | 1032 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1033 | PsxCreat: |
1034 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1035 | (void **) &pSMBr); | |
1036 | if (rc) | |
1037 | return rc; | |
1038 | ||
1039 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1040 | name_len = | |
acbbb76a SF |
1041 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1042 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1043 | name_len++; /* trailing null */ |
1044 | name_len *= 2; | |
1045 | } else { /* BB improve the check for buffer overruns BB */ | |
1046 | name_len = strnlen(name, PATH_MAX); | |
1047 | name_len++; /* trailing null */ | |
1048 | strncpy(pSMB->FileName, name, name_len); | |
1049 | } | |
1050 | ||
1051 | params = 6 + name_len; | |
1052 | count = sizeof(OPEN_PSX_REQ); | |
1053 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1054 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1055 | pSMB->MaxSetupCount = 0; | |
1056 | pSMB->Reserved = 0; | |
1057 | pSMB->Flags = 0; | |
1058 | pSMB->Timeout = 0; | |
1059 | pSMB->Reserved2 = 0; | |
1060 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1061 | InformationLevel) - 4; |
2dd29d31 | 1062 | offset = param_offset + params; |
2dd29d31 | 1063 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1064 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1065 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1066 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1067 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1068 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1069 | pSMB->DataOffset = cpu_to_le16(offset); | |
1070 | pSMB->SetupCount = 1; | |
1071 | pSMB->Reserved3 = 0; | |
1072 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1073 | byte_count = 3 /* pad */ + params + count; | |
1074 | ||
1075 | pSMB->DataCount = cpu_to_le16(count); | |
1076 | pSMB->ParameterCount = cpu_to_le16(params); | |
1077 | pSMB->TotalDataCount = pSMB->DataCount; | |
1078 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1079 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1080 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1081 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1082 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1083 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1084 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1085 | if (rc) { | |
f96637be | 1086 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1087 | goto psx_create_err; |
1088 | } | |
1089 | ||
f96637be | 1090 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1091 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1092 | ||
820a803f | 1093 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1094 | rc = -EIO; /* bad smb */ |
1095 | goto psx_create_err; | |
1096 | } | |
1097 | ||
1098 | /* copy return information to pRetData */ | |
50c2f753 | 1099 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1100 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1101 | |
2dd29d31 | 1102 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1103 | if (netfid) |
2dd29d31 SF |
1104 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1105 | /* Let caller know file was created so we can set the mode. */ | |
1106 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1107 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1108 | *pOplock |= CIFS_CREATE_ACTION; |
1109 | /* check to make sure response data is there */ | |
8f2376ad CG |
1110 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1111 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1112 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1113 | } else { |
820a803f | 1114 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1115 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1116 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1117 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1118 | goto psx_create_err; |
1119 | } | |
50c2f753 | 1120 | memcpy((char *) pRetData, |
cbac3cba | 1121 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1122 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1123 | } |
2dd29d31 SF |
1124 | |
1125 | psx_create_err: | |
1126 | cifs_buf_release(pSMB); | |
1127 | ||
65bc98b0 | 1128 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1129 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1130 | else |
44c58186 | 1131 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1132 | |
1133 | if (rc == -EAGAIN) | |
1134 | goto PsxCreat; | |
1135 | ||
50c2f753 | 1136 | return rc; |
2dd29d31 SF |
1137 | } |
1138 | ||
a9d02ad4 SF |
1139 | static __u16 convert_disposition(int disposition) |
1140 | { | |
1141 | __u16 ofun = 0; | |
1142 | ||
1143 | switch (disposition) { | |
1144 | case FILE_SUPERSEDE: | |
1145 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | case FILE_OPEN: | |
1148 | ofun = SMBOPEN_OAPPEND; | |
1149 | break; | |
1150 | case FILE_CREATE: | |
1151 | ofun = SMBOPEN_OCREATE; | |
1152 | break; | |
1153 | case FILE_OPEN_IF: | |
1154 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1155 | break; | |
1156 | case FILE_OVERWRITE: | |
1157 | ofun = SMBOPEN_OTRUNC; | |
1158 | break; | |
1159 | case FILE_OVERWRITE_IF: | |
1160 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1161 | break; | |
1162 | default: | |
f96637be | 1163 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1164 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1165 | } | |
1166 | return ofun; | |
1167 | } | |
1168 | ||
35fc37d5 JL |
1169 | static int |
1170 | access_flags_to_smbopen_mode(const int access_flags) | |
1171 | { | |
1172 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1173 | ||
1174 | if (masked_flags == GENERIC_READ) | |
1175 | return SMBOPEN_READ; | |
1176 | else if (masked_flags == GENERIC_WRITE) | |
1177 | return SMBOPEN_WRITE; | |
1178 | ||
1179 | /* just go for read/write */ | |
1180 | return SMBOPEN_READWRITE; | |
1181 | } | |
1182 | ||
a9d02ad4 | 1183 | int |
6d5786a3 | 1184 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1185 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1186 | const int access_flags, const int create_options, __u16 *netfid, |
1187 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1188 | const struct nls_table *nls_codepage, int remap) |
1189 | { | |
1190 | int rc = -EACCES; | |
1191 | OPENX_REQ *pSMB = NULL; | |
1192 | OPENX_RSP *pSMBr = NULL; | |
1193 | int bytes_returned; | |
1194 | int name_len; | |
1195 | __u16 count; | |
1196 | ||
1197 | OldOpenRetry: | |
1198 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1199 | (void **) &pSMBr); | |
1200 | if (rc) | |
1201 | return rc; | |
1202 | ||
1203 | pSMB->AndXCommand = 0xFF; /* none */ | |
1204 | ||
1205 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1206 | count = 1; /* account for one byte pad to word boundary */ | |
1207 | name_len = | |
acbbb76a SF |
1208 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1209 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1210 | name_len++; /* trailing null */ |
1211 | name_len *= 2; | |
1212 | } else { /* BB improve check for buffer overruns BB */ | |
1213 | count = 0; /* no pad */ | |
1214 | name_len = strnlen(fileName, PATH_MAX); | |
1215 | name_len++; /* trailing null */ | |
1216 | strncpy(pSMB->fileName, fileName, name_len); | |
1217 | } | |
1218 | if (*pOplock & REQ_OPLOCK) | |
1219 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1220 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1221 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1222 | |
a9d02ad4 | 1223 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1224 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1225 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1226 | /* set file as system file if special file such | |
1227 | as fifo and server expecting SFU style and | |
1228 | no Unix extensions */ | |
1229 | ||
790fe579 SF |
1230 | if (create_options & CREATE_OPTION_SPECIAL) |
1231 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1232 | else /* BB FIXME BB */ |
1233 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1234 | |
67750fb9 JL |
1235 | if (create_options & CREATE_OPTION_READONLY) |
1236 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1237 | |
1238 | /* BB FIXME BB */ | |
50c2f753 SF |
1239 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1240 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1241 | /* BB FIXME END BB */ |
3e87d803 SF |
1242 | |
1243 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1244 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1245 | count += name_len; |
be8e3b00 | 1246 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1247 | |
1248 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1249 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1250 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1251 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1252 | if (rc) { |
f96637be | 1253 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1254 | } else { |
1255 | /* BB verify if wct == 15 */ | |
1256 | ||
582d21e5 | 1257 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1258 | |
1259 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1260 | /* Let caller know file was created so we can set the mode. */ | |
1261 | /* Do we care about the CreateAction in any other cases? */ | |
1262 | /* BB FIXME BB */ | |
790fe579 | 1263 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1264 | *pOplock |= CIFS_CREATE_ACTION; */ |
1265 | /* BB FIXME END */ | |
1266 | ||
790fe579 | 1267 | if (pfile_info) { |
a9d02ad4 SF |
1268 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1269 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1270 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1271 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1272 | pfile_info->Attributes = |
50c2f753 | 1273 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1274 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1275 | pfile_info->AllocationSize = |
1276 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1277 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1278 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1279 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1280 | } |
1281 | } | |
1282 | ||
1283 | cifs_buf_release(pSMB); | |
1284 | if (rc == -EAGAIN) | |
1285 | goto OldOpenRetry; | |
1286 | return rc; | |
1287 | } | |
1288 | ||
1da177e4 | 1289 | int |
d81b8a40 PS |
1290 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1291 | FILE_ALL_INFO *buf) | |
1da177e4 LT |
1292 | { |
1293 | int rc = -EACCES; | |
9bf4fa01 PS |
1294 | OPEN_REQ *req = NULL; |
1295 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1296 | int bytes_returned; |
1297 | int name_len; | |
1298 | __u16 count; | |
d81b8a40 PS |
1299 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1300 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1301 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1302 | const struct nls_table *nls = cifs_sb->local_nls; |
1303 | int create_options = oparms->create_options; | |
1304 | int desired_access = oparms->desired_access; | |
1305 | int disposition = oparms->disposition; | |
1306 | const char *path = oparms->path; | |
1da177e4 LT |
1307 | |
1308 | openRetry: | |
9bf4fa01 PS |
1309 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1310 | (void **)&rsp); | |
1da177e4 LT |
1311 | if (rc) |
1312 | return rc; | |
1313 | ||
9bf4fa01 PS |
1314 | /* no commands go after this */ |
1315 | req->AndXCommand = 0xFF; | |
1da177e4 | 1316 | |
9bf4fa01 PS |
1317 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1318 | /* account for one byte pad to word boundary */ | |
1319 | count = 1; | |
1320 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1321 | path, PATH_MAX, nls, remap); | |
1322 | /* trailing null */ | |
1323 | name_len++; | |
1da177e4 | 1324 | name_len *= 2; |
9bf4fa01 PS |
1325 | req->NameLength = cpu_to_le16(name_len); |
1326 | } else { | |
1327 | /* BB improve check for buffer overruns BB */ | |
1328 | /* no pad */ | |
1329 | count = 0; | |
1330 | name_len = strnlen(path, PATH_MAX); | |
1331 | /* trailing null */ | |
1332 | name_len++; | |
1333 | req->NameLength = cpu_to_le16(name_len); | |
1334 | strncpy(req->fileName, path, name_len); | |
1da177e4 | 1335 | } |
9bf4fa01 PS |
1336 | |
1337 | if (*oplock & REQ_OPLOCK) | |
1338 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1339 | else if (*oplock & REQ_BATCHOPLOCK) | |
1340 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1341 | ||
1342 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1343 | req->AllocationSize = 0; | |
1344 | ||
1345 | /* | |
1346 | * Set file as system file if special file such as fifo and server | |
1347 | * expecting SFU style and no Unix extensions. | |
1348 | */ | |
790fe579 | 1349 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1350 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1351 | else |
9bf4fa01 | 1352 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1353 | |
9bf4fa01 PS |
1354 | /* |
1355 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1356 | * sensitive checks for other servers such as Samba. | |
1357 | */ | |
1da177e4 | 1358 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1359 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1360 | |
67750fb9 | 1361 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1362 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1363 | ||
1364 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1365 | req->CreateDisposition = cpu_to_le32(disposition); | |
1366 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1367 | |
09d1db5c | 1368 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1369 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1370 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1371 | |
1372 | count += name_len; | |
9bf4fa01 | 1373 | inc_rfc1001_len(req, count); |
1da177e4 | 1374 | |
9bf4fa01 PS |
1375 | req->ByteCount = cpu_to_le16(count); |
1376 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1377 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1378 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1379 | if (rc) { |
f96637be | 1380 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1381 | cifs_buf_release(req); |
1382 | if (rc == -EAGAIN) | |
1383 | goto openRetry; | |
1384 | return rc; | |
1da177e4 | 1385 | } |
a5a2b489 | 1386 | |
9bf4fa01 PS |
1387 | /* 1 byte no need to le_to_cpu */ |
1388 | *oplock = rsp->OplockLevel; | |
1389 | /* cifs fid stays in le */ | |
d81b8a40 | 1390 | oparms->fid->netfid = rsp->Fid; |
9bf4fa01 PS |
1391 | |
1392 | /* Let caller know file was created so we can set the mode. */ | |
1393 | /* Do we care about the CreateAction in any other cases? */ | |
1394 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1395 | *oplock |= CIFS_CREATE_ACTION; | |
1396 | ||
1397 | if (buf) { | |
1398 | /* copy from CreationTime to Attributes */ | |
1399 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1400 | /* the file_info buf is endian converted by caller */ | |
1401 | buf->AllocationSize = rsp->AllocationSize; | |
1402 | buf->EndOfFile = rsp->EndOfFile; | |
1403 | buf->NumberOfLinks = cpu_to_le32(1); | |
1404 | buf->DeletePending = 0; | |
1405 | } | |
1406 | ||
1407 | cifs_buf_release(req); | |
1da177e4 LT |
1408 | return rc; |
1409 | } | |
1410 | ||
e28bc5b1 JL |
1411 | /* |
1412 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1413 | * current bigbuf. | |
1414 | */ | |
c42a6abe | 1415 | int |
350be257 | 1416 | cifs_discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1417 | { |
350be257 | 1418 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 | 1419 | int remaining = rfclen + 4 - server->total_read; |
e28bc5b1 JL |
1420 | |
1421 | while (remaining > 0) { | |
1422 | int length; | |
1423 | ||
1424 | length = cifs_read_from_socket(server, server->bigbuf, | |
1425 | min_t(unsigned int, remaining, | |
1887f601 | 1426 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1427 | if (length < 0) |
1428 | return length; | |
1429 | server->total_read += length; | |
1430 | remaining -= length; | |
1431 | } | |
1432 | ||
e28bc5b1 JL |
1433 | return 0; |
1434 | } | |
1435 | ||
6cc3b242 PS |
1436 | static int |
1437 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1438 | { | |
1439 | int length; | |
1440 | struct cifs_readdata *rdata = mid->callback_data; | |
1441 | ||
350be257 | 1442 | length = cifs_discard_remaining_data(server); |
6cc3b242 | 1443 | dequeue_mid(mid, rdata->result); |
350be257 PS |
1444 | mid->resp_buf = server->smallbuf; |
1445 | server->smallbuf = NULL; | |
6cc3b242 PS |
1446 | return length; |
1447 | } | |
1448 | ||
09a4707e | 1449 | int |
e28bc5b1 JL |
1450 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1451 | { | |
1452 | int length, len; | |
8d5ce4d2 | 1453 | unsigned int data_offset, data_len; |
e28bc5b1 | 1454 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1455 | char *buf = server->smallbuf; |
1456 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1457 | |
f96637be JP |
1458 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1459 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1460 | |
1461 | /* | |
1462 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1463 | * can if there's not enough data. At this point, we've read down to | |
1464 | * the Mid. | |
1465 | */ | |
eb378711 | 1466 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1467 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1468 | |
a6137305 AV |
1469 | length = cifs_read_from_socket(server, |
1470 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1471 | if (length < 0) |
1472 | return length; | |
1473 | server->total_read += length; | |
1474 | ||
511c54a2 PS |
1475 | if (server->ops->is_session_expired && |
1476 | server->ops->is_session_expired(buf)) { | |
1477 | cifs_reconnect(server); | |
1478 | wake_up(&server->response_q); | |
1479 | return -1; | |
1480 | } | |
1481 | ||
6cc3b242 PS |
1482 | if (server->ops->is_status_pending && |
1483 | server->ops->is_status_pending(buf, server, 0)) { | |
350be257 | 1484 | cifs_discard_remaining_data(server); |
6cc3b242 PS |
1485 | return -1; |
1486 | } | |
1487 | ||
e28bc5b1 | 1488 | /* Was the SMB read successful? */ |
eb378711 | 1489 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1490 | if (rdata->result != 0) { |
f96637be JP |
1491 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1492 | __func__, rdata->result); | |
e28bc5b1 JL |
1493 | return cifs_readv_discard(server, mid); |
1494 | } | |
1495 | ||
1496 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1497 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1498 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1499 | __func__, server->total_read, | |
1500 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1501 | rdata->result = -EIO; |
1502 | return cifs_readv_discard(server, mid); | |
1503 | } | |
1504 | ||
eb378711 | 1505 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1506 | if (data_offset < server->total_read) { |
1507 | /* | |
1508 | * win2k8 sometimes sends an offset of 0 when the read | |
1509 | * is beyond the EOF. Treat it as if the data starts just after | |
1510 | * the header. | |
1511 | */ | |
f96637be JP |
1512 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1513 | __func__, data_offset); | |
e28bc5b1 JL |
1514 | data_offset = server->total_read; |
1515 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1516 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1517 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1518 | __func__, data_offset); | |
e28bc5b1 JL |
1519 | rdata->result = -EIO; |
1520 | return cifs_readv_discard(server, mid); | |
1521 | } | |
1522 | ||
f96637be JP |
1523 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1524 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1525 | |
1526 | len = data_offset - server->total_read; | |
1527 | if (len > 0) { | |
1528 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1529 | length = cifs_read_from_socket(server, |
1530 | buf + server->total_read, len); | |
e28bc5b1 JL |
1531 | if (length < 0) |
1532 | return length; | |
1533 | server->total_read += length; | |
1534 | } | |
1535 | ||
1536 | /* set up first iov for signature check */ | |
738f9de5 PS |
1537 | rdata->iov[0].iov_base = buf; |
1538 | rdata->iov[0].iov_len = 4; | |
1539 | rdata->iov[1].iov_base = buf + 4; | |
1540 | rdata->iov[1].iov_len = server->total_read - 4; | |
1541 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n", | |
1542 | rdata->iov[0].iov_base, server->total_read); | |
e28bc5b1 JL |
1543 | |
1544 | /* how much data is in the response? */ | |
eb378711 | 1545 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1546 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1547 | /* data_len is corrupt -- discard frame */ |
1548 | rdata->result = -EIO; | |
1549 | return cifs_readv_discard(server, mid); | |
1550 | } | |
1551 | ||
8321fec4 JL |
1552 | length = rdata->read_into_pages(server, rdata, data_len); |
1553 | if (length < 0) | |
1554 | return length; | |
e28bc5b1 | 1555 | |
8321fec4 | 1556 | server->total_read += length; |
e28bc5b1 | 1557 | |
f96637be JP |
1558 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1559 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1560 | |
1561 | /* discard anything left over */ | |
5ffef7bf | 1562 | if (server->total_read < buflen) |
e28bc5b1 JL |
1563 | return cifs_readv_discard(server, mid); |
1564 | ||
1565 | dequeue_mid(mid, false); | |
350be257 PS |
1566 | mid->resp_buf = server->smallbuf; |
1567 | server->smallbuf = NULL; | |
e28bc5b1 JL |
1568 | return length; |
1569 | } | |
1570 | ||
e28bc5b1 JL |
1571 | static void |
1572 | cifs_readv_callback(struct mid_q_entry *mid) | |
1573 | { | |
1574 | struct cifs_readdata *rdata = mid->callback_data; | |
1575 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1576 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1577 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1578 | .rq_nvec = 2, | |
8321fec4 JL |
1579 | .rq_pages = rdata->pages, |
1580 | .rq_npages = rdata->nr_pages, | |
1581 | .rq_pagesz = rdata->pagesz, | |
1582 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1583 | |
f96637be JP |
1584 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1585 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1586 | rdata->bytes); | |
e28bc5b1 | 1587 | |
7c9421e1 | 1588 | switch (mid->mid_state) { |
e28bc5b1 JL |
1589 | case MID_RESPONSE_RECEIVED: |
1590 | /* result already set, check signature */ | |
38d77c50 | 1591 | if (server->sign) { |
985e4ff0 SF |
1592 | int rc = 0; |
1593 | ||
bf5ea0e2 | 1594 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1595 | mid->sequence_number); |
985e4ff0 | 1596 | if (rc) |
f96637be JP |
1597 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1598 | rc); | |
e28bc5b1 JL |
1599 | } |
1600 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1601 | task_io_account_read(rdata->got_bytes); |
1602 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1603 | break; |
1604 | case MID_REQUEST_SUBMITTED: | |
1605 | case MID_RETRY_NEEDED: | |
1606 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1607 | if (server->sign && rdata->got_bytes) |
1608 | /* reset bytes number since we can not check a sign */ | |
1609 | rdata->got_bytes = 0; | |
1610 | /* FIXME: should this be counted toward the initiating task? */ | |
1611 | task_io_account_read(rdata->got_bytes); | |
1612 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1613 | break; |
1614 | default: | |
1615 | rdata->result = -EIO; | |
1616 | } | |
1617 | ||
da472fc8 | 1618 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1619 | DeleteMidQEntry(mid); |
a891f0f8 | 1620 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1621 | } |
1622 | ||
1623 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1624 | int | |
1625 | cifs_async_readv(struct cifs_readdata *rdata) | |
1626 | { | |
1627 | int rc; | |
1628 | READ_REQ *smb = NULL; | |
1629 | int wct; | |
1630 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1631 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1632 | .rq_nvec = 2 }; | |
e28bc5b1 | 1633 | |
f96637be JP |
1634 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1635 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1636 | |
1637 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1638 | wct = 12; | |
1639 | else { | |
1640 | wct = 10; /* old style read */ | |
1641 | if ((rdata->offset >> 32) > 0) { | |
1642 | /* can not handle this big offset for old */ | |
1643 | return -EIO; | |
1644 | } | |
1645 | } | |
1646 | ||
1647 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1648 | if (rc) | |
1649 | return rc; | |
1650 | ||
1651 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1652 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1653 | ||
1654 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1655 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1656 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1657 | if (wct == 12) | |
1658 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1659 | smb->Remaining = 0; | |
1660 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1661 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1662 | if (wct == 12) | |
1663 | smb->ByteCount = 0; | |
1664 | else { | |
1665 | /* old style read */ | |
1666 | struct smb_com_readx_req *smbr = | |
1667 | (struct smb_com_readx_req *)smb; | |
1668 | smbr->ByteCount = 0; | |
1669 | } | |
1670 | ||
1671 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1672 | rdata->iov[0].iov_base = smb; |
1673 | rdata->iov[0].iov_len = 4; | |
1674 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1675 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1676 | |
6993f74a | 1677 | kref_get(&rdata->refcount); |
fec344e3 | 1678 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
9b7c18a2 | 1679 | cifs_readv_callback, NULL, rdata, 0); |
e28bc5b1 JL |
1680 | |
1681 | if (rc == 0) | |
44c58186 | 1682 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1683 | else |
1684 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1685 | |
1686 | cifs_small_buf_release(smb); | |
1687 | return rc; | |
1688 | } | |
1689 | ||
1da177e4 | 1690 | int |
6d5786a3 PS |
1691 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1692 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1693 | { |
1694 | int rc = -EACCES; | |
1695 | READ_REQ *pSMB = NULL; | |
1696 | READ_RSP *pSMBr = NULL; | |
1697 | char *pReadData = NULL; | |
bfa0d75a | 1698 | int wct; |
ec637e3f SF |
1699 | int resp_buf_type = 0; |
1700 | struct kvec iov[1]; | |
da502f7d | 1701 | struct kvec rsp_iov; |
d4ffff1f PS |
1702 | __u32 pid = io_parms->pid; |
1703 | __u16 netfid = io_parms->netfid; | |
1704 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1705 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1706 | unsigned int count = io_parms->length; |
1da177e4 | 1707 | |
f96637be | 1708 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1709 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1710 | wct = 12; |
4c3130ef | 1711 | else { |
bfa0d75a | 1712 | wct = 10; /* old style read */ |
d4ffff1f | 1713 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1714 | /* can not handle this big offset for old */ |
1715 | return -EIO; | |
1716 | } | |
1717 | } | |
1da177e4 LT |
1718 | |
1719 | *nbytes = 0; | |
ec637e3f | 1720 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1721 | if (rc) |
1722 | return rc; | |
1723 | ||
d4ffff1f PS |
1724 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1725 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1726 | ||
1da177e4 LT |
1727 | /* tcon and ses pointer are checked in smb_init */ |
1728 | if (tcon->ses->server == NULL) | |
1729 | return -ECONNABORTED; | |
1730 | ||
ec637e3f | 1731 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1732 | pSMB->Fid = netfid; |
d4ffff1f | 1733 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1734 | if (wct == 12) |
d4ffff1f | 1735 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1736 | |
1da177e4 LT |
1737 | pSMB->Remaining = 0; |
1738 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1739 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1740 | if (wct == 12) |
bfa0d75a SF |
1741 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1742 | else { | |
1743 | /* old style read */ | |
50c2f753 | 1744 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1745 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1746 | pSMBW->ByteCount = 0; |
bfa0d75a | 1747 | } |
ec637e3f SF |
1748 | |
1749 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1750 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1751 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1752 | CIFS_LOG_ERROR, &rsp_iov); | |
1753 | cifs_small_buf_release(pSMB); | |
44c58186 | 1754 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1755 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1756 | if (rc) { |
f96637be | 1757 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1758 | } else { |
1759 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1760 | data_length = data_length << 16; | |
1761 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1762 | *nbytes = data_length; | |
1763 | ||
1764 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1765 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1766 | || (data_length > count)) { |
f96637be | 1767 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1768 | data_length, count); |
1da177e4 LT |
1769 | rc = -EIO; |
1770 | *nbytes = 0; | |
1771 | } else { | |
ec637e3f | 1772 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1773 | le16_to_cpu(pSMBr->DataOffset); |
1774 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1775 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1776 | rc = -EFAULT; |
26f57364 | 1777 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1778 | if (*buf) |
50c2f753 | 1779 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1780 | } |
1781 | } | |
1da177e4 | 1782 | |
790fe579 | 1783 | if (*buf) { |
da502f7d | 1784 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1785 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1786 | /* return buffer to caller to free */ |
da502f7d | 1787 | *buf = rsp_iov.iov_base; |
790fe579 | 1788 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1789 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1790 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1791 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1792 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1793 | |
1794 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1795 | since file handle passed in no longer valid */ |
1796 | return rc; | |
1797 | } | |
1798 | ||
ec637e3f | 1799 | |
1da177e4 | 1800 | int |
6d5786a3 | 1801 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1802 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1803 | { |
1804 | int rc = -EACCES; | |
1805 | WRITE_REQ *pSMB = NULL; | |
1806 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1807 | int bytes_returned, wct; |
1da177e4 LT |
1808 | __u32 bytes_sent; |
1809 | __u16 byte_count; | |
fa2989f4 PS |
1810 | __u32 pid = io_parms->pid; |
1811 | __u16 netfid = io_parms->netfid; | |
1812 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1813 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1814 | unsigned int count = io_parms->length; |
1da177e4 | 1815 | |
a24e2d7d SF |
1816 | *nbytes = 0; |
1817 | ||
f96637be | 1818 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1819 | if (tcon->ses == NULL) |
1c955187 SF |
1820 | return -ECONNABORTED; |
1821 | ||
790fe579 | 1822 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1823 | wct = 14; |
4c3130ef | 1824 | else { |
1c955187 | 1825 | wct = 12; |
4c3130ef SF |
1826 | if ((offset >> 32) > 0) { |
1827 | /* can not handle big offset for old srv */ | |
1828 | return -EIO; | |
1829 | } | |
1830 | } | |
1c955187 SF |
1831 | |
1832 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1833 | (void **) &pSMBr); |
1834 | if (rc) | |
1835 | return rc; | |
fa2989f4 PS |
1836 | |
1837 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1838 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1839 | ||
1da177e4 LT |
1840 | /* tcon and ses pointer are checked in smb_init */ |
1841 | if (tcon->ses->server == NULL) | |
1842 | return -ECONNABORTED; | |
1843 | ||
1844 | pSMB->AndXCommand = 0xFF; /* none */ | |
1845 | pSMB->Fid = netfid; | |
1846 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1847 | if (wct == 14) |
1c955187 | 1848 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1849 | |
1da177e4 LT |
1850 | pSMB->Reserved = 0xFFFFFFFF; |
1851 | pSMB->WriteMode = 0; | |
1852 | pSMB->Remaining = 0; | |
1853 | ||
50c2f753 | 1854 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1855 | can send more if LARGE_WRITE_X capability returned by the server and if |
1856 | our buffer is big enough or if we convert to iovecs on socket writes | |
1857 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1858 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1859 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1860 | } else { | |
1861 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1862 | & ~0xFF; | |
1863 | } | |
1864 | ||
1865 | if (bytes_sent > count) | |
1866 | bytes_sent = count; | |
1867 | pSMB->DataOffset = | |
50c2f753 | 1868 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1869 | if (buf) |
61e74801 | 1870 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1871 | else if (count != 0) { |
1da177e4 LT |
1872 | /* No buffer */ |
1873 | cifs_buf_release(pSMB); | |
1874 | return -EINVAL; | |
e30dcf3a | 1875 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1876 | if (wct == 14) |
e30dcf3a | 1877 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1878 | else /* wct == 12 */ |
e30dcf3a | 1879 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1880 | |
1da177e4 LT |
1881 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1882 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1883 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1884 | |
790fe579 | 1885 | if (wct == 14) |
1c955187 | 1886 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1887 | else { /* old style write has byte count 4 bytes earlier |
1888 | so 4 bytes pad */ | |
1889 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1890 | (struct smb_com_writex_req *)pSMB; |
1891 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1892 | } | |
1da177e4 LT |
1893 | |
1894 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1895 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1896 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1897 | if (rc) { |
f96637be | 1898 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1899 | } else { |
1900 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1901 | *nbytes = (*nbytes) << 16; | |
1902 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1903 | |
1904 | /* | |
1905 | * Mask off high 16 bits when bytes written as returned by the | |
1906 | * server is greater than bytes requested by the client. Some | |
1907 | * OS/2 servers are known to set incorrect CountHigh values. | |
1908 | */ | |
1909 | if (*nbytes > count) | |
1910 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1911 | } |
1912 | ||
1913 | cifs_buf_release(pSMB); | |
1914 | ||
50c2f753 | 1915 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1916 | since file handle passed in no longer valid */ |
1917 | ||
1918 | return rc; | |
1919 | } | |
1920 | ||
c28c89fc JL |
1921 | void |
1922 | cifs_writedata_release(struct kref *refcount) | |
1923 | { | |
1924 | struct cifs_writedata *wdata = container_of(refcount, | |
1925 | struct cifs_writedata, refcount); | |
1926 | ||
1927 | if (wdata->cfile) | |
1928 | cifsFileInfo_put(wdata->cfile); | |
1929 | ||
1930 | kfree(wdata); | |
1931 | } | |
1932 | ||
1933 | /* | |
1934 | * Write failed with a retryable error. Resend the write request. It's also | |
1935 | * possible that the page was redirtied so re-clean the page. | |
1936 | */ | |
1937 | static void | |
1938 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1939 | { | |
7f6c5008 | 1940 | int i, rc = 0; |
2b0143b5 | 1941 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 1942 | struct TCP_Server_Info *server; |
7f6c5008 | 1943 | unsigned int rest_len; |
c28c89fc | 1944 | |
7f6c5008 PS |
1945 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1946 | i = 0; | |
1947 | rest_len = wdata->bytes; | |
c28c89fc | 1948 | do { |
7f6c5008 PS |
1949 | struct cifs_writedata *wdata2; |
1950 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
1951 | ||
1952 | wsize = server->ops->wp_retry_size(inode); | |
1953 | if (wsize < rest_len) { | |
09cbfeaf | 1954 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
1955 | if (!nr_pages) { |
1956 | rc = -ENOTSUPP; | |
1957 | break; | |
1958 | } | |
09cbfeaf KS |
1959 | cur_len = nr_pages * PAGE_SIZE; |
1960 | tailsz = PAGE_SIZE; | |
7f6c5008 | 1961 | } else { |
09cbfeaf | 1962 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 1963 | cur_len = rest_len; |
09cbfeaf | 1964 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 1965 | } |
c28c89fc | 1966 | |
7f6c5008 PS |
1967 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
1968 | if (!wdata2) { | |
1969 | rc = -ENOMEM; | |
1970 | break; | |
c51bb0ea | 1971 | } |
7f6c5008 PS |
1972 | |
1973 | for (j = 0; j < nr_pages; j++) { | |
1974 | wdata2->pages[j] = wdata->pages[i + j]; | |
1975 | lock_page(wdata2->pages[j]); | |
1976 | clear_page_dirty_for_io(wdata2->pages[j]); | |
1977 | } | |
1978 | ||
1979 | wdata2->sync_mode = wdata->sync_mode; | |
1980 | wdata2->nr_pages = nr_pages; | |
1981 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 1982 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
1983 | wdata2->tailsz = tailsz; |
1984 | wdata2->bytes = cur_len; | |
1985 | ||
1986 | wdata2->cfile = find_writable_file(CIFS_I(inode), false); | |
1987 | if (!wdata2->cfile) { | |
1988 | cifs_dbg(VFS, "No writable handles for inode\n"); | |
1989 | rc = -EBADF; | |
1990 | break; | |
1991 | } | |
1992 | wdata2->pid = wdata2->cfile->pid; | |
1993 | rc = server->ops->async_writev(wdata2, cifs_writedata_release); | |
1994 | ||
1995 | for (j = 0; j < nr_pages; j++) { | |
1996 | unlock_page(wdata2->pages[j]); | |
1997 | if (rc != 0 && rc != -EAGAIN) { | |
1998 | SetPageError(wdata2->pages[j]); | |
1999 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 2000 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
2001 | } |
2002 | } | |
2003 | ||
2004 | if (rc) { | |
2005 | kref_put(&wdata2->refcount, cifs_writedata_release); | |
2006 | if (rc == -EAGAIN) | |
2007 | continue; | |
2008 | break; | |
2009 | } | |
2010 | ||
2011 | rest_len -= cur_len; | |
2012 | i += nr_pages; | |
2013 | } while (i < wdata->nr_pages); | |
c28c89fc JL |
2014 | |
2015 | mapping_set_error(inode->i_mapping, rc); | |
2016 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2017 | } | |
2018 | ||
c2e87640 | 2019 | void |
c28c89fc JL |
2020 | cifs_writev_complete(struct work_struct *work) |
2021 | { | |
2022 | struct cifs_writedata *wdata = container_of(work, | |
2023 | struct cifs_writedata, work); | |
2b0143b5 | 2024 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
2025 | int i = 0; |
2026 | ||
2027 | if (wdata->result == 0) { | |
597b027f | 2028 | spin_lock(&inode->i_lock); |
c28c89fc | 2029 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2030 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2031 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2032 | wdata->bytes); | |
2033 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2034 | return cifs_writev_requeue(wdata); | |
2035 | ||
2036 | for (i = 0; i < wdata->nr_pages; i++) { | |
2037 | struct page *page = wdata->pages[i]; | |
2038 | if (wdata->result == -EAGAIN) | |
2039 | __set_page_dirty_nobuffers(page); | |
2040 | else if (wdata->result < 0) | |
2041 | SetPageError(page); | |
2042 | end_page_writeback(page); | |
09cbfeaf | 2043 | put_page(page); |
c28c89fc JL |
2044 | } |
2045 | if (wdata->result != -EAGAIN) | |
2046 | mapping_set_error(inode->i_mapping, wdata->result); | |
2047 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2048 | } | |
2049 | ||
2050 | struct cifs_writedata * | |
c2e87640 | 2051 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
2052 | { |
2053 | struct cifs_writedata *wdata; | |
2054 | ||
c28c89fc JL |
2055 | /* writedata + number of page pointers */ |
2056 | wdata = kzalloc(sizeof(*wdata) + | |
26c8f0d6 | 2057 | sizeof(struct page *) * nr_pages, GFP_NOFS); |
c28c89fc | 2058 | if (wdata != NULL) { |
c28c89fc | 2059 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2060 | INIT_LIST_HEAD(&wdata->list); |
2061 | init_completion(&wdata->done); | |
2062 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2063 | } |
2064 | return wdata; | |
2065 | } | |
2066 | ||
2067 | /* | |
7c9421e1 | 2068 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2069 | * workqueue completion task. |
2070 | */ | |
2071 | static void | |
2072 | cifs_writev_callback(struct mid_q_entry *mid) | |
2073 | { | |
2074 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2075 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2076 | unsigned int written; |
2077 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2078 | ||
7c9421e1 | 2079 | switch (mid->mid_state) { |
c28c89fc JL |
2080 | case MID_RESPONSE_RECEIVED: |
2081 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2082 | if (wdata->result != 0) | |
2083 | break; | |
2084 | ||
2085 | written = le16_to_cpu(smb->CountHigh); | |
2086 | written <<= 16; | |
2087 | written += le16_to_cpu(smb->Count); | |
2088 | /* | |
2089 | * Mask off high 16 bits when bytes written as returned | |
2090 | * by the server is greater than bytes requested by the | |
2091 | * client. OS/2 servers are known to set incorrect | |
2092 | * CountHigh values. | |
2093 | */ | |
2094 | if (written > wdata->bytes) | |
2095 | written &= 0xFFFF; | |
2096 | ||
2097 | if (written < wdata->bytes) | |
2098 | wdata->result = -ENOSPC; | |
2099 | else | |
2100 | wdata->bytes = written; | |
2101 | break; | |
2102 | case MID_REQUEST_SUBMITTED: | |
2103 | case MID_RETRY_NEEDED: | |
2104 | wdata->result = -EAGAIN; | |
2105 | break; | |
2106 | default: | |
2107 | wdata->result = -EIO; | |
2108 | break; | |
2109 | } | |
2110 | ||
da472fc8 | 2111 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2112 | DeleteMidQEntry(mid); |
a891f0f8 | 2113 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2114 | } |
2115 | ||
2116 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2117 | int | |
4a5c80d7 SF |
2118 | cifs_async_writev(struct cifs_writedata *wdata, |
2119 | void (*release)(struct kref *kref)) | |
c28c89fc | 2120 | { |
eddb079d | 2121 | int rc = -EACCES; |
c28c89fc JL |
2122 | WRITE_REQ *smb = NULL; |
2123 | int wct; | |
96daf2b0 | 2124 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 2125 | struct kvec iov[2]; |
fec344e3 | 2126 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2127 | |
2128 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2129 | wct = 14; | |
2130 | } else { | |
2131 | wct = 12; | |
2132 | if (wdata->offset >> 32 > 0) { | |
2133 | /* can not handle big offset for old srv */ | |
2134 | return -EIO; | |
2135 | } | |
2136 | } | |
2137 | ||
2138 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2139 | if (rc) | |
2140 | goto async_writev_out; | |
2141 | ||
fe5f5d2e JL |
2142 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2143 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2144 | |
c28c89fc | 2145 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2146 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2147 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2148 | if (wct == 14) | |
2149 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2150 | smb->Reserved = 0xFFFFFFFF; | |
2151 | smb->WriteMode = 0; | |
2152 | smb->Remaining = 0; | |
2153 | ||
2154 | smb->DataOffset = | |
2155 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2156 | ||
2157 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
2158 | iov[0].iov_len = 4; |
2159 | iov[0].iov_base = smb; | |
2160 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
2161 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 2162 | |
738f9de5 PS |
2163 | rqst.rq_iov = iov; |
2164 | rqst.rq_nvec = 2; | |
eddb079d JL |
2165 | rqst.rq_pages = wdata->pages; |
2166 | rqst.rq_npages = wdata->nr_pages; | |
2167 | rqst.rq_pagesz = wdata->pagesz; | |
2168 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2169 | |
f96637be JP |
2170 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2171 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2172 | |
2173 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2174 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2175 | ||
2176 | if (wct == 14) { | |
2177 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2178 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2179 | } else { | |
2180 | /* wct == 12 */ | |
2181 | struct smb_com_writex_req *smbw = | |
2182 | (struct smb_com_writex_req *)smb; | |
2183 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2184 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 2185 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2186 | } |
2187 | ||
2188 | kref_get(&wdata->refcount); | |
fec344e3 | 2189 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
9b7c18a2 | 2190 | cifs_writev_callback, NULL, wdata, 0); |
c28c89fc JL |
2191 | |
2192 | if (rc == 0) | |
44c58186 | 2193 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2194 | else |
4a5c80d7 | 2195 | kref_put(&wdata->refcount, release); |
c28c89fc | 2196 | |
c28c89fc JL |
2197 | async_writev_out: |
2198 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2199 | return rc; |
2200 | } | |
2201 | ||
d6e04ae6 | 2202 | int |
6d5786a3 | 2203 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2204 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2205 | { |
2206 | int rc = -EACCES; | |
2207 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2208 | int wct; |
d6e04ae6 | 2209 | int smb_hdr_len; |
ec637e3f | 2210 | int resp_buf_type = 0; |
fa2989f4 PS |
2211 | __u32 pid = io_parms->pid; |
2212 | __u16 netfid = io_parms->netfid; | |
2213 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2214 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2215 | unsigned int count = io_parms->length; |
da502f7d | 2216 | struct kvec rsp_iov; |
1da177e4 | 2217 | |
fbec9ab9 JL |
2218 | *nbytes = 0; |
2219 | ||
f96637be | 2220 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2221 | |
4c3130ef | 2222 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2223 | wct = 14; |
4c3130ef | 2224 | } else { |
8cc64c6e | 2225 | wct = 12; |
4c3130ef SF |
2226 | if ((offset >> 32) > 0) { |
2227 | /* can not handle big offset for old srv */ | |
2228 | return -EIO; | |
2229 | } | |
2230 | } | |
8cc64c6e | 2231 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2232 | if (rc) |
2233 | return rc; | |
fa2989f4 PS |
2234 | |
2235 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2236 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2237 | ||
1da177e4 LT |
2238 | /* tcon and ses pointer are checked in smb_init */ |
2239 | if (tcon->ses->server == NULL) | |
2240 | return -ECONNABORTED; | |
2241 | ||
d6e04ae6 | 2242 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2243 | pSMB->Fid = netfid; |
2244 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2245 | if (wct == 14) |
8cc64c6e | 2246 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2247 | pSMB->Reserved = 0xFFFFFFFF; |
2248 | pSMB->WriteMode = 0; | |
2249 | pSMB->Remaining = 0; | |
d6e04ae6 | 2250 | |
1da177e4 | 2251 | pSMB->DataOffset = |
50c2f753 | 2252 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2253 | |
3e84469d SF |
2254 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2255 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2256 | /* header + 1 byte pad */ |
2257 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2258 | if (wct == 14) |
be8e3b00 | 2259 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2260 | else /* wct == 12 */ |
be8e3b00 | 2261 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2262 | if (wct == 14) |
8cc64c6e SF |
2263 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2264 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2265 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2266 | (struct smb_com_writex_req *)pSMB; |
2267 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2268 | } | |
3e84469d | 2269 | iov[0].iov_base = pSMB; |
790fe579 | 2270 | if (wct == 14) |
ec637e3f SF |
2271 | iov[0].iov_len = smb_hdr_len + 4; |
2272 | else /* wct == 12 pad bigger by four bytes */ | |
2273 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2274 | |
da502f7d PS |
2275 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
2276 | &rsp_iov); | |
2277 | cifs_small_buf_release(pSMB); | |
44c58186 | 2278 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2279 | if (rc) { |
f96637be | 2280 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2281 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2282 | /* presumably this can not happen, but best to be safe */ |
2283 | rc = -EIO; | |
d6e04ae6 | 2284 | } else { |
da502f7d | 2285 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
2286 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2287 | *nbytes = (*nbytes) << 16; | |
2288 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2289 | |
2290 | /* | |
2291 | * Mask off high 16 bits when bytes written as returned by the | |
2292 | * server is greater than bytes requested by the client. OS/2 | |
2293 | * servers are known to set incorrect CountHigh values. | |
2294 | */ | |
2295 | if (*nbytes > count) | |
2296 | *nbytes &= 0xFFFF; | |
50c2f753 | 2297 | } |
1da177e4 | 2298 | |
da502f7d | 2299 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 2300 | |
50c2f753 | 2301 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2302 | since file handle passed in no longer valid */ |
2303 | ||
2304 | return rc; | |
2305 | } | |
d6e04ae6 | 2306 | |
6d5786a3 PS |
2307 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2308 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2309 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2310 | { | |
2311 | int rc = 0; | |
2312 | LOCK_REQ *pSMB = NULL; | |
2313 | struct kvec iov[2]; | |
da502f7d | 2314 | struct kvec rsp_iov; |
9ee305b7 PS |
2315 | int resp_buf_type; |
2316 | __u16 count; | |
2317 | ||
f96637be JP |
2318 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2319 | num_lock, num_unlock); | |
9ee305b7 PS |
2320 | |
2321 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2322 | if (rc) | |
2323 | return rc; | |
2324 | ||
2325 | pSMB->Timeout = 0; | |
2326 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2327 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2328 | pSMB->LockType = lock_type; | |
2329 | pSMB->AndXCommand = 0xFF; /* none */ | |
2330 | pSMB->Fid = netfid; /* netfid stays le */ | |
2331 | ||
2332 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2333 | inc_rfc1001_len(pSMB, count); | |
2334 | pSMB->ByteCount = cpu_to_le16(count); | |
2335 | ||
2336 | iov[0].iov_base = (char *)pSMB; | |
2337 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2338 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2339 | iov[1].iov_base = (char *)buf; | |
2340 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2341 | ||
44c58186 | 2342 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
da502f7d PS |
2343 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP, |
2344 | &rsp_iov); | |
2345 | cifs_small_buf_release(pSMB); | |
9ee305b7 | 2346 | if (rc) |
f96637be | 2347 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2348 | |
2349 | return rc; | |
2350 | } | |
d6e04ae6 | 2351 | |
1da177e4 | 2352 | int |
6d5786a3 | 2353 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2354 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2355 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2356 | const __u32 numLock, const __u8 lockType, |
2357 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2358 | { |
2359 | int rc = 0; | |
2360 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2361 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2362 | int bytes_returned; |
a891f0f8 | 2363 | int flags = 0; |
1da177e4 LT |
2364 | __u16 count; |
2365 | ||
f96637be JP |
2366 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2367 | (int)waitFlag, numLock); | |
46810cbf SF |
2368 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2369 | ||
1da177e4 LT |
2370 | if (rc) |
2371 | return rc; | |
2372 | ||
790fe579 | 2373 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2374 | /* no response expected */ |
2375 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2376 | pSMB->Timeout = 0; |
4b18f2a9 | 2377 | } else if (waitFlag) { |
a891f0f8 | 2378 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2379 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2380 | } else { | |
2381 | pSMB->Timeout = 0; | |
2382 | } | |
2383 | ||
2384 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2385 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2386 | pSMB->LockType = lockType; | |
12fed00d | 2387 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2388 | pSMB->AndXCommand = 0xFF; /* none */ |
2389 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2390 | ||
790fe579 | 2391 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2392 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2393 | /* BB where to store pid high? */ |
2394 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2395 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2396 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2397 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2398 | count = sizeof(LOCKING_ANDX_RANGE); | |
2399 | } else { | |
2400 | /* oplock break */ | |
2401 | count = 0; | |
2402 | } | |
be8e3b00 | 2403 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2404 | pSMB->ByteCount = cpu_to_le16(count); |
2405 | ||
da502f7d | 2406 | if (waitFlag) |
7ee1af76 | 2407 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 2408 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 2409 | else |
a891f0f8 | 2410 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 2411 | cifs_small_buf_release(pSMB); |
44c58186 | 2412 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2413 | if (rc) |
f96637be | 2414 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2415 | |
50c2f753 | 2416 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2417 | since file handle passed in no longer valid */ |
2418 | return rc; | |
2419 | } | |
2420 | ||
08547b03 | 2421 | int |
6d5786a3 | 2422 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2423 | const __u16 smb_file_id, const __u32 netpid, |
2424 | const loff_t start_offset, const __u64 len, | |
2425 | struct file_lock *pLockData, const __u16 lock_type, | |
2426 | const bool waitFlag) | |
08547b03 SF |
2427 | { |
2428 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2429 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2430 | struct cifs_posix_lock *parm_data; |
2431 | int rc = 0; | |
3a5ff61c | 2432 | int timeout = 0; |
08547b03 | 2433 | int bytes_returned = 0; |
133672ef | 2434 | int resp_buf_type = 0; |
08547b03 | 2435 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2436 | struct kvec iov[1]; |
da502f7d | 2437 | struct kvec rsp_iov; |
08547b03 | 2438 | |
f96637be | 2439 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2440 | |
08547b03 SF |
2441 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2442 | ||
2443 | if (rc) | |
2444 | return rc; | |
2445 | ||
2446 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2447 | ||
50c2f753 | 2448 | params = 6; |
08547b03 SF |
2449 | pSMB->MaxSetupCount = 0; |
2450 | pSMB->Reserved = 0; | |
2451 | pSMB->Flags = 0; | |
08547b03 SF |
2452 | pSMB->Reserved2 = 0; |
2453 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2454 | offset = param_offset + params; | |
2455 | ||
08547b03 SF |
2456 | count = sizeof(struct cifs_posix_lock); |
2457 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2458 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2459 | pSMB->SetupCount = 1; |
2460 | pSMB->Reserved3 = 0; | |
c5fd363d | 2461 | if (pLockData) |
08547b03 SF |
2462 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2463 | else | |
2464 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2465 | byte_count = 3 /* pad */ + params + count; | |
2466 | pSMB->DataCount = cpu_to_le16(count); | |
2467 | pSMB->ParameterCount = cpu_to_le16(params); | |
2468 | pSMB->TotalDataCount = pSMB->DataCount; | |
2469 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2470 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2471 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2472 | (((char *) &pSMB->hdr.Protocol) + offset); |
2473 | ||
2474 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2475 | if (waitFlag) { |
133672ef | 2476 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2477 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2478 | pSMB->Timeout = cpu_to_le32(-1); |
2479 | } else | |
2480 | pSMB->Timeout = 0; | |
2481 | ||
4f6bcec9 | 2482 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2483 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2484 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2485 | |
2486 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2487 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2488 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2489 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2490 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2491 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2492 | if (waitFlag) { |
2493 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2494 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2495 | } else { | |
133672ef | 2496 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2497 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2498 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2499 | &resp_buf_type, timeout, &rsp_iov); |
2500 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2501 | } |
da502f7d | 2502 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2503 | |
08547b03 | 2504 | if (rc) { |
f96637be | 2505 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2506 | } else if (pLockData) { |
fc94cdb9 SF |
2507 | /* lock structure can be returned on get */ |
2508 | __u16 data_offset; | |
2509 | __u16 data_count; | |
2510 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2511 | ||
820a803f | 2512 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2513 | rc = -EIO; /* bad smb */ |
2514 | goto plk_err_exit; | |
2515 | } | |
fc94cdb9 SF |
2516 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2517 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2518 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2519 | rc = -EIO; |
2520 | goto plk_err_exit; | |
2521 | } | |
2522 | parm_data = (struct cifs_posix_lock *) | |
2523 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2524 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2525 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2526 | else { |
2527 | if (parm_data->lock_type == | |
bc09d141 | 2528 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2529 | pLockData->fl_type = F_RDLCK; |
2530 | else if (parm_data->lock_type == | |
bc09d141 | 2531 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2532 | pLockData->fl_type = F_WRLCK; |
2533 | ||
5443d130 SF |
2534 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2535 | pLockData->fl_end = pLockData->fl_start + | |
2536 | le64_to_cpu(parm_data->length) - 1; | |
9d5b86ac | 2537 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2538 | } |
08547b03 | 2539 | } |
50c2f753 | 2540 | |
fc94cdb9 | 2541 | plk_err_exit: |
da502f7d | 2542 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2543 | |
08547b03 SF |
2544 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2545 | since file handle passed in no longer valid */ | |
2546 | ||
2547 | return rc; | |
2548 | } | |
2549 | ||
2550 | ||
1da177e4 | 2551 | int |
6d5786a3 | 2552 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2553 | { |
2554 | int rc = 0; | |
2555 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2556 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2557 | |
2558 | /* do not retry on dead session on close */ | |
2559 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2560 | if (rc == -EAGAIN) |
1da177e4 LT |
2561 | return 0; |
2562 | if (rc) | |
2563 | return rc; | |
2564 | ||
1da177e4 | 2565 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2566 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2567 | pSMB->ByteCount = 0; |
792af7b0 | 2568 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2569 | cifs_small_buf_release(pSMB); |
44c58186 | 2570 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2571 | if (rc) { |
790fe579 | 2572 | if (rc != -EINTR) { |
1da177e4 | 2573 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2574 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2575 | } |
2576 | } | |
2577 | ||
1da177e4 | 2578 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2579 | if (rc == -EAGAIN) |
1da177e4 LT |
2580 | rc = 0; |
2581 | ||
2582 | return rc; | |
2583 | } | |
2584 | ||
b298f223 | 2585 | int |
6d5786a3 | 2586 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2587 | { |
2588 | int rc = 0; | |
2589 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2590 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2591 | |
2592 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2593 | if (rc) | |
2594 | return rc; | |
2595 | ||
2596 | pSMB->FileID = (__u16) smb_file_id; | |
2597 | pSMB->ByteCount = 0; | |
792af7b0 | 2598 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2599 | cifs_small_buf_release(pSMB); |
44c58186 | 2600 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2601 | if (rc) |
f96637be | 2602 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2603 | |
2604 | return rc; | |
2605 | } | |
2606 | ||
1da177e4 | 2607 | int |
6d5786a3 | 2608 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2609 | const char *from_name, const char *to_name, |
2610 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2611 | { |
2612 | int rc = 0; | |
2613 | RENAME_REQ *pSMB = NULL; | |
2614 | RENAME_RSP *pSMBr = NULL; | |
2615 | int bytes_returned; | |
2616 | int name_len, name_len2; | |
2617 | __u16 count; | |
2baa2682 | 2618 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2619 | |
f96637be | 2620 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2621 | renameRetry: |
2622 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2623 | (void **) &pSMBr); | |
2624 | if (rc) | |
2625 | return rc; | |
2626 | ||
2627 | pSMB->BufferFormat = 0x04; | |
2628 | pSMB->SearchAttributes = | |
2629 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2630 | ATTR_DIRECTORY); | |
2631 | ||
2632 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2633 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2634 | from_name, PATH_MAX, | |
2635 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2636 | name_len++; /* trailing null */ |
2637 | name_len *= 2; | |
2638 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2639 | /* protocol requires ASCII signature byte on Unicode string */ | |
2640 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2641 | name_len2 = | |
acbbb76a | 2642 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2643 | to_name, PATH_MAX, cifs_sb->local_nls, |
2644 | remap); | |
1da177e4 LT |
2645 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2646 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2647 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2648 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2649 | name_len++; /* trailing null */ |
8ceb9843 PS |
2650 | strncpy(pSMB->OldFileName, from_name, name_len); |
2651 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2652 | name_len2++; /* trailing null */ |
2653 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2654 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2655 | name_len2++; /* trailing null */ |
2656 | name_len2++; /* signature byte */ | |
2657 | } | |
2658 | ||
2659 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2660 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2661 | pSMB->ByteCount = cpu_to_le16(count); |
2662 | ||
2663 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2664 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2665 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2666 | if (rc) |
f96637be | 2667 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2668 | |
1da177e4 LT |
2669 | cifs_buf_release(pSMB); |
2670 | ||
2671 | if (rc == -EAGAIN) | |
2672 | goto renameRetry; | |
2673 | ||
2674 | return rc; | |
2675 | } | |
2676 | ||
6d5786a3 | 2677 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2678 | int netfid, const char *target_name, |
50c2f753 | 2679 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2680 | { |
2681 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2682 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2683 | struct set_file_rename *rename_info; |
1da177e4 LT |
2684 | char *data_offset; |
2685 | char dummy_string[30]; | |
2686 | int rc = 0; | |
2687 | int bytes_returned = 0; | |
2688 | int len_of_str; | |
2689 | __u16 params, param_offset, offset, count, byte_count; | |
2690 | ||
f96637be | 2691 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2692 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2693 | (void **) &pSMBr); | |
2694 | if (rc) | |
2695 | return rc; | |
2696 | ||
2697 | params = 6; | |
2698 | pSMB->MaxSetupCount = 0; | |
2699 | pSMB->Reserved = 0; | |
2700 | pSMB->Flags = 0; | |
2701 | pSMB->Timeout = 0; | |
2702 | pSMB->Reserved2 = 0; | |
2703 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2704 | offset = param_offset + params; | |
2705 | ||
2706 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2707 | rename_info = (struct set_file_rename *) data_offset; | |
2708 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2709 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2710 | pSMB->SetupCount = 1; |
2711 | pSMB->Reserved3 = 0; | |
2712 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2713 | byte_count = 3 /* pad */ + params; | |
2714 | pSMB->ParameterCount = cpu_to_le16(params); | |
2715 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2716 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2717 | pSMB->DataOffset = cpu_to_le16(offset); | |
2718 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2719 | rename_info->overwrite = cpu_to_le32(1); | |
2720 | rename_info->root_fid = 0; | |
2721 | /* unicode only call */ | |
790fe579 | 2722 | if (target_name == NULL) { |
50c2f753 | 2723 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2724 | len_of_str = |
2725 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2726 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2727 | } else { |
acbbb76a SF |
2728 | len_of_str = |
2729 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2730 | target_name, PATH_MAX, nls_codepage, |
2731 | remap); | |
1da177e4 LT |
2732 | } |
2733 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2734 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2735 | byte_count += count; |
2736 | pSMB->DataCount = cpu_to_le16(count); | |
2737 | pSMB->TotalDataCount = pSMB->DataCount; | |
2738 | pSMB->Fid = netfid; | |
2739 | pSMB->InformationLevel = | |
2740 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2741 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2742 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2743 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2744 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2745 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2746 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2747 | if (rc) |
f96637be JP |
2748 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2749 | rc); | |
a5a2b489 | 2750 | |
1da177e4 LT |
2751 | cifs_buf_release(pSMB); |
2752 | ||
2753 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2754 | since file handle passed in no longer valid */ | |
2755 | ||
2756 | return rc; | |
2757 | } | |
2758 | ||
2759 | int | |
6d5786a3 PS |
2760 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2761 | const char *fromName, const __u16 target_tid, const char *toName, | |
2762 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2763 | { |
2764 | int rc = 0; | |
2765 | COPY_REQ *pSMB = NULL; | |
2766 | COPY_RSP *pSMBr = NULL; | |
2767 | int bytes_returned; | |
2768 | int name_len, name_len2; | |
2769 | __u16 count; | |
2770 | ||
f96637be | 2771 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2772 | copyRetry: |
2773 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2774 | (void **) &pSMBr); | |
2775 | if (rc) | |
2776 | return rc; | |
2777 | ||
2778 | pSMB->BufferFormat = 0x04; | |
2779 | pSMB->Tid2 = target_tid; | |
2780 | ||
2781 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2782 | ||
2783 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2784 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2785 | fromName, PATH_MAX, nls_codepage, | |
2786 | remap); | |
1da177e4 LT |
2787 | name_len++; /* trailing null */ |
2788 | name_len *= 2; | |
2789 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2790 | /* protocol requires ASCII signature byte on Unicode string */ | |
2791 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2792 | name_len2 = |
acbbb76a SF |
2793 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2794 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2795 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2796 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2797 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2798 | name_len = strnlen(fromName, PATH_MAX); |
2799 | name_len++; /* trailing null */ | |
2800 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2801 | name_len2 = strnlen(toName, PATH_MAX); | |
2802 | name_len2++; /* trailing null */ | |
2803 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2804 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2805 | name_len2++; /* trailing null */ | |
2806 | name_len2++; /* signature byte */ | |
2807 | } | |
2808 | ||
2809 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2810 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2811 | pSMB->ByteCount = cpu_to_le16(count); |
2812 | ||
2813 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2814 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2815 | if (rc) { | |
f96637be JP |
2816 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2817 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2818 | } |
0d817bc0 | 2819 | cifs_buf_release(pSMB); |
1da177e4 LT |
2820 | |
2821 | if (rc == -EAGAIN) | |
2822 | goto copyRetry; | |
2823 | ||
2824 | return rc; | |
2825 | } | |
2826 | ||
2827 | int | |
6d5786a3 | 2828 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2829 | const char *fromName, const char *toName, |
bc8ebdc4 | 2830 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2831 | { |
2832 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2833 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2834 | char *data_offset; | |
2835 | int name_len; | |
2836 | int name_len_target; | |
2837 | int rc = 0; | |
2838 | int bytes_returned = 0; | |
2839 | __u16 params, param_offset, offset, byte_count; | |
2840 | ||
f96637be | 2841 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2842 | createSymLinkRetry: |
2843 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2844 | (void **) &pSMBr); | |
2845 | if (rc) | |
2846 | return rc; | |
2847 | ||
2848 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2849 | name_len = | |
bc8ebdc4 NA |
2850 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2851 | /* find define for this maxpathcomponent */ | |
2852 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2853 | name_len++; /* trailing null */ |
2854 | name_len *= 2; | |
2855 | ||
50c2f753 | 2856 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2857 | name_len = strnlen(fromName, PATH_MAX); |
2858 | name_len++; /* trailing null */ | |
2859 | strncpy(pSMB->FileName, fromName, name_len); | |
2860 | } | |
2861 | params = 6 + name_len; | |
2862 | pSMB->MaxSetupCount = 0; | |
2863 | pSMB->Reserved = 0; | |
2864 | pSMB->Flags = 0; | |
2865 | pSMB->Timeout = 0; | |
2866 | pSMB->Reserved2 = 0; | |
2867 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2868 | InformationLevel) - 4; |
1da177e4 LT |
2869 | offset = param_offset + params; |
2870 | ||
2871 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2872 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2873 | name_len_target = | |
bc8ebdc4 NA |
2874 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2875 | /* find define for this maxpathcomponent */ | |
2876 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2877 | name_len_target++; /* trailing null */ |
2878 | name_len_target *= 2; | |
50c2f753 | 2879 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2880 | name_len_target = strnlen(toName, PATH_MAX); |
2881 | name_len_target++; /* trailing null */ | |
2882 | strncpy(data_offset, toName, name_len_target); | |
2883 | } | |
2884 | ||
2885 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2886 | /* BB find exact max on data count below from sess */ | |
2887 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2888 | pSMB->SetupCount = 1; | |
2889 | pSMB->Reserved3 = 0; | |
2890 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2891 | byte_count = 3 /* pad */ + params + name_len_target; | |
2892 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2893 | pSMB->ParameterCount = cpu_to_le16(params); | |
2894 | pSMB->TotalDataCount = pSMB->DataCount; | |
2895 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2896 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2897 | pSMB->DataOffset = cpu_to_le16(offset); | |
2898 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2899 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2900 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2901 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2902 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2903 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2904 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2905 | if (rc) |
f96637be JP |
2906 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2907 | rc); | |
1da177e4 | 2908 | |
0d817bc0 | 2909 | cifs_buf_release(pSMB); |
1da177e4 LT |
2910 | |
2911 | if (rc == -EAGAIN) | |
2912 | goto createSymLinkRetry; | |
2913 | ||
2914 | return rc; | |
2915 | } | |
2916 | ||
2917 | int | |
6d5786a3 | 2918 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2919 | const char *fromName, const char *toName, |
737b758c | 2920 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2921 | { |
2922 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2923 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2924 | char *data_offset; | |
2925 | int name_len; | |
2926 | int name_len_target; | |
2927 | int rc = 0; | |
2928 | int bytes_returned = 0; | |
2929 | __u16 params, param_offset, offset, byte_count; | |
2930 | ||
f96637be | 2931 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2932 | createHardLinkRetry: |
2933 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2934 | (void **) &pSMBr); | |
2935 | if (rc) | |
2936 | return rc; | |
2937 | ||
2938 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2939 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2940 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2941 | name_len++; /* trailing null */ |
2942 | name_len *= 2; | |
2943 | ||
50c2f753 | 2944 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2945 | name_len = strnlen(toName, PATH_MAX); |
2946 | name_len++; /* trailing null */ | |
2947 | strncpy(pSMB->FileName, toName, name_len); | |
2948 | } | |
2949 | params = 6 + name_len; | |
2950 | pSMB->MaxSetupCount = 0; | |
2951 | pSMB->Reserved = 0; | |
2952 | pSMB->Flags = 0; | |
2953 | pSMB->Timeout = 0; | |
2954 | pSMB->Reserved2 = 0; | |
2955 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2956 | InformationLevel) - 4; |
1da177e4 LT |
2957 | offset = param_offset + params; |
2958 | ||
2959 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2960 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2961 | name_len_target = | |
acbbb76a SF |
2962 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2963 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2964 | name_len_target++; /* trailing null */ |
2965 | name_len_target *= 2; | |
50c2f753 | 2966 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2967 | name_len_target = strnlen(fromName, PATH_MAX); |
2968 | name_len_target++; /* trailing null */ | |
2969 | strncpy(data_offset, fromName, name_len_target); | |
2970 | } | |
2971 | ||
2972 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2973 | /* BB find exact max on data count below from sess*/ | |
2974 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2975 | pSMB->SetupCount = 1; | |
2976 | pSMB->Reserved3 = 0; | |
2977 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2978 | byte_count = 3 /* pad */ + params + name_len_target; | |
2979 | pSMB->ParameterCount = cpu_to_le16(params); | |
2980 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2981 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2982 | pSMB->TotalDataCount = pSMB->DataCount; | |
2983 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2984 | pSMB->DataOffset = cpu_to_le16(offset); | |
2985 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2986 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2987 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2988 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2989 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2990 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2991 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2992 | if (rc) |
f96637be JP |
2993 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2994 | rc); | |
1da177e4 LT |
2995 | |
2996 | cifs_buf_release(pSMB); | |
2997 | if (rc == -EAGAIN) | |
2998 | goto createHardLinkRetry; | |
2999 | ||
3000 | return rc; | |
3001 | } | |
3002 | ||
3003 | int | |
6d5786a3 | 3004 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
3005 | const char *from_name, const char *to_name, |
3006 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
3007 | { |
3008 | int rc = 0; | |
3009 | NT_RENAME_REQ *pSMB = NULL; | |
3010 | RENAME_RSP *pSMBr = NULL; | |
3011 | int bytes_returned; | |
3012 | int name_len, name_len2; | |
3013 | __u16 count; | |
2baa2682 | 3014 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 3015 | |
f96637be | 3016 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
3017 | winCreateHardLinkRetry: |
3018 | ||
3019 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3020 | (void **) &pSMBr); | |
3021 | if (rc) | |
3022 | return rc; | |
3023 | ||
3024 | pSMB->SearchAttributes = | |
3025 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3026 | ATTR_DIRECTORY); | |
3027 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3028 | pSMB->ClusterCount = 0; | |
3029 | ||
3030 | pSMB->BufferFormat = 0x04; | |
3031 | ||
3032 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3033 | name_len = | |
d6e906f1 SF |
3034 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3035 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3036 | name_len++; /* trailing null */ |
3037 | name_len *= 2; | |
fcc7c09d JL |
3038 | |
3039 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3040 | pSMB->OldFileName[name_len] = 0x04; | |
3041 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3042 | name_len2 = |
acbbb76a | 3043 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3044 | to_name, PATH_MAX, cifs_sb->local_nls, |
3045 | remap); | |
1da177e4 LT |
3046 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3047 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 3048 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 3049 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 3050 | name_len++; /* trailing null */ |
d6e906f1 SF |
3051 | strncpy(pSMB->OldFileName, from_name, name_len); |
3052 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
3053 | name_len2++; /* trailing null */ |
3054 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 3055 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
3056 | name_len2++; /* trailing null */ |
3057 | name_len2++; /* signature byte */ | |
3058 | } | |
3059 | ||
3060 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3061 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3062 | pSMB->ByteCount = cpu_to_le16(count); |
3063 | ||
3064 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3065 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3066 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3067 | if (rc) |
f96637be | 3068 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3069 | |
1da177e4 LT |
3070 | cifs_buf_release(pSMB); |
3071 | if (rc == -EAGAIN) | |
3072 | goto winCreateHardLinkRetry; | |
3073 | ||
3074 | return rc; | |
3075 | } | |
3076 | ||
3077 | int | |
6d5786a3 | 3078 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3079 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3080 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3081 | { |
3082 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3083 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3084 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3085 | int rc = 0; | |
3086 | int bytes_returned; | |
3087 | int name_len; | |
3088 | __u16 params, byte_count; | |
460b9696 | 3089 | char *data_start; |
1da177e4 | 3090 | |
f96637be | 3091 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3092 | |
3093 | querySymLinkRetry: | |
3094 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3095 | (void **) &pSMBr); | |
3096 | if (rc) | |
3097 | return rc; | |
3098 | ||
3099 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3100 | name_len = | |
bc8ebdc4 NA |
3101 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3102 | searchName, PATH_MAX, nls_codepage, | |
3103 | remap); | |
1da177e4 LT |
3104 | name_len++; /* trailing null */ |
3105 | name_len *= 2; | |
50c2f753 | 3106 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3107 | name_len = strnlen(searchName, PATH_MAX); |
3108 | name_len++; /* trailing null */ | |
3109 | strncpy(pSMB->FileName, searchName, name_len); | |
3110 | } | |
3111 | ||
3112 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3113 | pSMB->TotalDataCount = 0; | |
3114 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3115 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3116 | pSMB->MaxSetupCount = 0; |
3117 | pSMB->Reserved = 0; | |
3118 | pSMB->Flags = 0; | |
3119 | pSMB->Timeout = 0; | |
3120 | pSMB->Reserved2 = 0; | |
3121 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3122 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3123 | pSMB->DataCount = 0; |
3124 | pSMB->DataOffset = 0; | |
3125 | pSMB->SetupCount = 1; | |
3126 | pSMB->Reserved3 = 0; | |
3127 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3128 | byte_count = params + 1 /* pad */ ; | |
3129 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3130 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3131 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3132 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3133 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3134 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3135 | ||
3136 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3137 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3138 | if (rc) { | |
f96637be | 3139 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3140 | } else { |
3141 | /* decode response */ | |
3142 | ||
3143 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3144 | /* BB also check enough total bytes returned */ |
820a803f | 3145 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3146 | rc = -EIO; |
1da177e4 | 3147 | else { |
0e0d2cf3 | 3148 | bool is_unicode; |
460b9696 JL |
3149 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3150 | ||
3151 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3152 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3153 | |
0e0d2cf3 SF |
3154 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3155 | is_unicode = true; | |
3156 | else | |
3157 | is_unicode = false; | |
3158 | ||
737b758c | 3159 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3160 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3161 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3162 | if (!*symlinkinfo) |
460b9696 | 3163 | rc = -ENOMEM; |
1da177e4 LT |
3164 | } |
3165 | } | |
3166 | cifs_buf_release(pSMB); | |
3167 | if (rc == -EAGAIN) | |
3168 | goto querySymLinkRetry; | |
3169 | return rc; | |
3170 | } | |
3171 | ||
c52a9554 SF |
3172 | /* |
3173 | * Recent Windows versions now create symlinks more frequently | |
3174 | * and they use the "reparse point" mechanism below. We can of course | |
3175 | * do symlinks nicely to Samba and other servers which support the | |
3176 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3177 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3178 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3179 | * In the interim this code has been moved to its own config option so | |
3180 | * it is not compiled in by default until callers fixed up and more tested. | |
3181 | */ | |
1da177e4 | 3182 | int |
d244bf2d PS |
3183 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3184 | __u16 fid, char **symlinkinfo, | |
3185 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3186 | { |
3187 | int rc = 0; | |
3188 | int bytes_returned; | |
50c2f753 SF |
3189 | struct smb_com_transaction_ioctl_req *pSMB; |
3190 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3191 | bool is_unicode; |
3192 | unsigned int sub_len; | |
3193 | char *sub_start; | |
c31f3307 SF |
3194 | struct reparse_symlink_data *reparse_buf; |
3195 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3196 | __u32 data_offset, data_count; |
3197 | char *end_of_smb; | |
3198 | ||
3199 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3200 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3201 | (void **) &pSMBr); | |
3202 | if (rc) | |
3203 | return rc; | |
3204 | ||
3205 | pSMB->TotalParameterCount = 0 ; | |
3206 | pSMB->TotalDataCount = 0; | |
3207 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3208 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3209 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3210 | pSMB->MaxSetupCount = 4; |
3211 | pSMB->Reserved = 0; | |
3212 | pSMB->ParameterOffset = 0; | |
3213 | pSMB->DataCount = 0; | |
3214 | pSMB->DataOffset = 0; | |
3215 | pSMB->SetupCount = 4; | |
3216 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3217 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3218 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3219 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3220 | pSMB->IsRootFlag = 0; | |
3221 | pSMB->Fid = fid; /* file handle always le */ | |
3222 | pSMB->ByteCount = 0; | |
3223 | ||
3224 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3225 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3226 | if (rc) { | |
f96637be | 3227 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3228 | goto qreparse_out; |
3229 | } | |
3230 | ||
3231 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3232 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3233 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3234 | /* BB also check enough total bytes returned */ | |
3235 | rc = -EIO; /* bad smb */ | |
3236 | goto qreparse_out; | |
3237 | } | |
3238 | if (!data_count || (data_count > 2048)) { | |
3239 | rc = -EIO; | |
3240 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3241 | goto qreparse_out; | |
3242 | } | |
3243 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3244 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3245 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3246 | if ((char *)reparse_buf >= end_of_smb) { | |
3247 | rc = -EIO; | |
3248 | goto qreparse_out; | |
1da177e4 | 3249 | } |
c31f3307 SF |
3250 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3251 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3252 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3253 | ||
3254 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3255 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3256 | le64_to_cpu(posix_buf->InodeType)); | |
3257 | rc = -EOPNOTSUPP; | |
3258 | goto qreparse_out; | |
3259 | } | |
3260 | is_unicode = true; | |
3261 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3262 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3263 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3264 | rc = -EIO; | |
3265 | goto qreparse_out; | |
3266 | } | |
3267 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3268 | sub_len, is_unicode, nls_codepage); | |
3269 | goto qreparse_out; | |
3270 | } else if (reparse_buf->ReparseTag != | |
3271 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3272 | rc = -EOPNOTSUPP; | |
3273 | goto qreparse_out; | |
3274 | } | |
3275 | ||
3276 | /* Reparse tag is NTFS symlink */ | |
3277 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3278 | reparse_buf->PathBuffer; | |
3279 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3280 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3281 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3282 | rc = -EIO; | |
3283 | goto qreparse_out; | |
3284 | } | |
d244bf2d PS |
3285 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3286 | is_unicode = true; | |
3287 | else | |
3288 | is_unicode = false; | |
989c7e51 | 3289 | |
d244bf2d PS |
3290 | /* BB FIXME investigate remapping reserved chars here */ |
3291 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3292 | nls_codepage); | |
3293 | if (!*symlinkinfo) | |
3294 | rc = -ENOMEM; | |
1da177e4 | 3295 | qreparse_out: |
4a6d87f1 | 3296 | cifs_buf_release(pSMB); |
1da177e4 | 3297 | |
d244bf2d PS |
3298 | /* |
3299 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3300 | * since file handle passed in no longer valid. | |
3301 | */ | |
1da177e4 LT |
3302 | return rc; |
3303 | } | |
3304 | ||
c7f508a9 SF |
3305 | int |
3306 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3307 | __u16 fid) | |
3308 | { | |
3309 | int rc = 0; | |
3310 | int bytes_returned; | |
3311 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3312 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3313 | ||
3314 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3315 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3316 | (void **) &pSMBr); | |
3317 | if (rc) | |
3318 | return rc; | |
3319 | ||
3320 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3321 | ||
3322 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3323 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3324 | pSMB->MaxParameterCount = 0; |
3325 | pSMB->MaxDataCount = 0; | |
3326 | pSMB->MaxSetupCount = 4; | |
3327 | pSMB->Reserved = 0; | |
3328 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3329 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3330 | pSMB->DataOffset = |
3331 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3332 | compression_state) - 4); /* 84 */ | |
3333 | pSMB->SetupCount = 4; | |
bc09d141 | 3334 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3335 | pSMB->ParameterCount = 0; |
bc09d141 | 3336 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3337 | pSMB->IsFsctl = 1; /* FSCTL */ |
3338 | pSMB->IsRootFlag = 0; | |
3339 | pSMB->Fid = fid; /* file handle always le */ | |
3340 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3341 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3342 | inc_rfc1001_len(pSMB, 5); |
3343 | ||
3344 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3345 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3346 | if (rc) | |
3347 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3348 | ||
3349 | cifs_buf_release(pSMB); | |
3350 | ||
3351 | /* | |
3352 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3353 | * since file handle passed in no longer valid. | |
3354 | */ | |
3355 | return rc; | |
3356 | } | |
3357 | ||
3358 | ||
1da177e4 LT |
3359 | #ifdef CONFIG_CIFS_POSIX |
3360 | ||
3361 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3362 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3363 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3364 | { |
3365 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3366 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3367 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3368 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3369 | /* |
3370 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3371 | ace->e_perm, ace->e_tag, ace->e_id); | |
3372 | */ | |
1da177e4 LT |
3373 | |
3374 | return; | |
3375 | } | |
3376 | ||
3377 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3378 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3379 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3380 | { |
3381 | int size = 0; | |
3382 | int i; | |
3383 | __u16 count; | |
50c2f753 SF |
3384 | struct cifs_posix_ace *pACE; |
3385 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3386 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3387 | |
3388 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3389 | return -EOPNOTSUPP; | |
3390 | ||
45987e00 | 3391 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3392 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3393 | pACE = &cifs_acl->ace_array[0]; | |
3394 | size = sizeof(struct cifs_posix_acl); | |
3395 | size += sizeof(struct cifs_posix_ace) * count; | |
3396 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3397 | if (size_of_data_area < size) { |
f96637be JP |
3398 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3399 | size_of_data_area, size); | |
1da177e4 LT |
3400 | return -EINVAL; |
3401 | } | |
45987e00 | 3402 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3403 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3404 | size = sizeof(struct cifs_posix_acl); | |
3405 | size += sizeof(struct cifs_posix_ace) * count; | |
3406 | /* skip past access ACEs to get to default ACEs */ | |
3407 | pACE = &cifs_acl->ace_array[count]; | |
3408 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3409 | size += sizeof(struct cifs_posix_ace) * count; | |
3410 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3411 | if (size_of_data_area < size) |
1da177e4 LT |
3412 | return -EINVAL; |
3413 | } else { | |
3414 | /* illegal type */ | |
3415 | return -EINVAL; | |
3416 | } | |
3417 | ||
3418 | size = posix_acl_xattr_size(count); | |
790fe579 | 3419 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3420 | /* used to query ACL EA size */ |
790fe579 | 3421 | } else if (size > buflen) { |
1da177e4 LT |
3422 | return -ERANGE; |
3423 | } else /* buffer big enough */ { | |
2211d5ba AG |
3424 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3425 | ||
ff7feac9 | 3426 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3427 | for (i = 0; i < count ; i++) { |
2211d5ba | 3428 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3429 | pACE++; |
1da177e4 LT |
3430 | } |
3431 | } | |
3432 | return size; | |
3433 | } | |
3434 | ||
50c2f753 | 3435 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3436 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 LT |
3437 | { |
3438 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3439 | ||
ff7feac9 SF |
3440 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3441 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3442 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3443 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3444 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3445 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3446 | } else |
ff7feac9 | 3447 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3448 | /* |
3449 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3450 | ace->e_perm, ace->e_tag, ace->e_id); | |
3451 | */ | |
1da177e4 LT |
3452 | return rc; |
3453 | } | |
3454 | ||
3455 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3456 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3457 | const int buflen, const int acl_type) | |
1da177e4 LT |
3458 | { |
3459 | __u16 rc = 0; | |
50c2f753 | 3460 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3461 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3462 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3463 | int count; |
3464 | int i; | |
3465 | ||
790fe579 | 3466 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3467 | return 0; |
3468 | ||
3469 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3470 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3471 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3472 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3473 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3474 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3475 | return 0; |
3476 | } | |
3477 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3478 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3479 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3480 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3481 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3482 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3483 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3484 | } else { |
f96637be | 3485 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3486 | return 0; |
3487 | } | |
50c2f753 | 3488 | for (i = 0; i < count; i++) { |
ae9ebe7c | 3489 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); |
790fe579 | 3490 | if (rc != 0) { |
1da177e4 LT |
3491 | /* ACE not converted */ |
3492 | break; | |
3493 | } | |
3494 | } | |
790fe579 | 3495 | if (rc == 0) { |
1da177e4 LT |
3496 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3497 | rc += sizeof(struct cifs_posix_acl); | |
3498 | /* BB add check to make sure ACL does not overflow SMB */ | |
3499 | } | |
3500 | return rc; | |
3501 | } | |
3502 | ||
3503 | int | |
6d5786a3 | 3504 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3505 | const unsigned char *searchName, |
3506 | char *acl_inf, const int buflen, const int acl_type, | |
3507 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3508 | { |
3509 | /* SMB_QUERY_POSIX_ACL */ | |
3510 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3511 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3512 | int rc = 0; | |
3513 | int bytes_returned; | |
3514 | int name_len; | |
3515 | __u16 params, byte_count; | |
50c2f753 | 3516 | |
f96637be | 3517 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3518 | |
3519 | queryAclRetry: | |
3520 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3521 | (void **) &pSMBr); | |
3522 | if (rc) | |
3523 | return rc; | |
50c2f753 | 3524 | |
1da177e4 LT |
3525 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3526 | name_len = | |
acbbb76a SF |
3527 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3528 | searchName, PATH_MAX, nls_codepage, | |
3529 | remap); | |
1da177e4 LT |
3530 | name_len++; /* trailing null */ |
3531 | name_len *= 2; | |
3532 | pSMB->FileName[name_len] = 0; | |
3533 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3534 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3535 | name_len = strnlen(searchName, PATH_MAX); |
3536 | name_len++; /* trailing null */ | |
3537 | strncpy(pSMB->FileName, searchName, name_len); | |
3538 | } | |
3539 | ||
3540 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3541 | pSMB->TotalDataCount = 0; | |
3542 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3543 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3544 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3545 | pSMB->MaxSetupCount = 0; | |
3546 | pSMB->Reserved = 0; | |
3547 | pSMB->Flags = 0; | |
3548 | pSMB->Timeout = 0; | |
3549 | pSMB->Reserved2 = 0; | |
3550 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3551 | offsetof(struct smb_com_transaction2_qpi_req, |
3552 | InformationLevel) - 4); | |
1da177e4 LT |
3553 | pSMB->DataCount = 0; |
3554 | pSMB->DataOffset = 0; | |
3555 | pSMB->SetupCount = 1; | |
3556 | pSMB->Reserved3 = 0; | |
3557 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3558 | byte_count = params + 1 /* pad */ ; | |
3559 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3560 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3561 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3562 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3563 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3564 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3565 | ||
3566 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3567 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3568 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3569 | if (rc) { |
f96637be | 3570 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3571 | } else { |
3572 | /* decode response */ | |
50c2f753 | 3573 | |
1da177e4 | 3574 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3575 | /* BB also check enough total bytes returned */ |
820a803f | 3576 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3577 | rc = -EIO; /* bad smb */ |
3578 | else { | |
3579 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3580 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3581 | rc = cifs_copy_posix_acl(acl_inf, | |
3582 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3583 | buflen, acl_type, count); |
1da177e4 LT |
3584 | } |
3585 | } | |
3586 | cifs_buf_release(pSMB); | |
3587 | if (rc == -EAGAIN) | |
3588 | goto queryAclRetry; | |
3589 | return rc; | |
3590 | } | |
3591 | ||
3592 | int | |
6d5786a3 | 3593 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3594 | const unsigned char *fileName, |
3595 | const char *local_acl, const int buflen, | |
3596 | const int acl_type, | |
3597 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3598 | { |
3599 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3600 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3601 | char *parm_data; | |
3602 | int name_len; | |
3603 | int rc = 0; | |
3604 | int bytes_returned = 0; | |
3605 | __u16 params, byte_count, data_count, param_offset, offset; | |
3606 | ||
f96637be | 3607 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3608 | setAclRetry: |
3609 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3610 | (void **) &pSMBr); |
1da177e4 LT |
3611 | if (rc) |
3612 | return rc; | |
3613 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3614 | name_len = | |
acbbb76a SF |
3615 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3616 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3617 | name_len++; /* trailing null */ |
3618 | name_len *= 2; | |
50c2f753 | 3619 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3620 | name_len = strnlen(fileName, PATH_MAX); |
3621 | name_len++; /* trailing null */ | |
3622 | strncpy(pSMB->FileName, fileName, name_len); | |
3623 | } | |
3624 | params = 6 + name_len; | |
3625 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3626 | /* BB find max SMB size from sess */ |
3627 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3628 | pSMB->MaxSetupCount = 0; |
3629 | pSMB->Reserved = 0; | |
3630 | pSMB->Flags = 0; | |
3631 | pSMB->Timeout = 0; | |
3632 | pSMB->Reserved2 = 0; | |
3633 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3634 | InformationLevel) - 4; |
1da177e4 LT |
3635 | offset = param_offset + params; |
3636 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3637 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3638 | ||
3639 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3640 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3641 | |
790fe579 | 3642 | if (data_count == 0) { |
1da177e4 LT |
3643 | rc = -EOPNOTSUPP; |
3644 | goto setACLerrorExit; | |
3645 | } | |
3646 | pSMB->DataOffset = cpu_to_le16(offset); | |
3647 | pSMB->SetupCount = 1; | |
3648 | pSMB->Reserved3 = 0; | |
3649 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3650 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3651 | byte_count = 3 /* pad */ + params + data_count; | |
3652 | pSMB->DataCount = cpu_to_le16(data_count); | |
3653 | pSMB->TotalDataCount = pSMB->DataCount; | |
3654 | pSMB->ParameterCount = cpu_to_le16(params); | |
3655 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3656 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3657 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3658 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3659 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3660 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3661 | if (rc) |
f96637be | 3662 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3663 | |
3664 | setACLerrorExit: | |
3665 | cifs_buf_release(pSMB); | |
3666 | if (rc == -EAGAIN) | |
3667 | goto setAclRetry; | |
3668 | return rc; | |
3669 | } | |
3670 | ||
f654bac2 SF |
3671 | /* BB fix tabs in this function FIXME BB */ |
3672 | int | |
6d5786a3 | 3673 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3674 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3675 | { |
50c2f753 SF |
3676 | int rc = 0; |
3677 | struct smb_t2_qfi_req *pSMB = NULL; | |
3678 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3679 | int bytes_returned; | |
3680 | __u16 params, byte_count; | |
f654bac2 | 3681 | |
f96637be | 3682 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3683 | if (tcon == NULL) |
3684 | return -ENODEV; | |
f654bac2 SF |
3685 | |
3686 | GetExtAttrRetry: | |
790fe579 SF |
3687 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3688 | (void **) &pSMBr); | |
3689 | if (rc) | |
3690 | return rc; | |
f654bac2 | 3691 | |
ad7a2926 | 3692 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3693 | pSMB->t2.TotalDataCount = 0; |
3694 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3695 | /* BB find exact max data count below from sess structure BB */ | |
3696 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3697 | pSMB->t2.MaxSetupCount = 0; | |
3698 | pSMB->t2.Reserved = 0; | |
3699 | pSMB->t2.Flags = 0; | |
3700 | pSMB->t2.Timeout = 0; | |
3701 | pSMB->t2.Reserved2 = 0; | |
3702 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3703 | Fid) - 4); | |
3704 | pSMB->t2.DataCount = 0; | |
3705 | pSMB->t2.DataOffset = 0; | |
3706 | pSMB->t2.SetupCount = 1; | |
3707 | pSMB->t2.Reserved3 = 0; | |
3708 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3709 | byte_count = params + 1 /* pad */ ; | |
3710 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3711 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3712 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3713 | pSMB->Pad = 0; | |
f654bac2 | 3714 | pSMB->Fid = netfid; |
be8e3b00 | 3715 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3716 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3717 | ||
3718 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3719 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3720 | if (rc) { | |
f96637be | 3721 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3722 | } else { |
3723 | /* decode response */ | |
3724 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3725 | /* BB also check enough total bytes returned */ |
820a803f | 3726 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3727 | /* If rc should we check for EOPNOSUPP and |
3728 | disable the srvino flag? or in caller? */ | |
3729 | rc = -EIO; /* bad smb */ | |
3730 | else { | |
3731 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3732 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3733 | struct file_chattr_info *pfinfo; | |
3734 | /* BB Do we need a cast or hash here ? */ | |
3735 | if (count != 16) { | |
f96637be | 3736 | cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n"); |
790fe579 SF |
3737 | rc = -EIO; |
3738 | goto GetExtAttrOut; | |
3739 | } | |
3740 | pfinfo = (struct file_chattr_info *) | |
3741 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3742 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3743 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3744 | } |
3745 | } | |
f654bac2 | 3746 | GetExtAttrOut: |
790fe579 SF |
3747 | cifs_buf_release(pSMB); |
3748 | if (rc == -EAGAIN) | |
3749 | goto GetExtAttrRetry; | |
3750 | return rc; | |
f654bac2 SF |
3751 | } |
3752 | ||
f654bac2 | 3753 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3754 | |
79df1bae JL |
3755 | #ifdef CONFIG_CIFS_ACL |
3756 | /* | |
3757 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3758 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3759 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3760 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3761 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3762 | * by caller | |
3763 | */ | |
3764 | static int | |
3765 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3766 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3767 | void **ret_buf) |
3768 | { | |
3769 | int rc; | |
3770 | __u32 temp_offset; | |
3771 | struct smb_com_ntransact_req *pSMB; | |
3772 | ||
3773 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3774 | (void **)&pSMB); | |
3775 | if (rc) | |
3776 | return rc; | |
3777 | *ret_buf = (void *)pSMB; | |
3778 | pSMB->Reserved = 0; | |
3779 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3780 | pSMB->TotalDataCount = 0; | |
c974befa | 3781 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3782 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3783 | pSMB->DataCount = pSMB->TotalDataCount; | |
3784 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3785 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3786 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3787 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3788 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3789 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3790 | return 0; | |
3791 | } | |
3792 | ||
3793 | static int | |
3794 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3795 | __u32 *pparmlen, __u32 *pdatalen) | |
3796 | { | |
3797 | char *end_of_smb; | |
3798 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3799 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3800 | u16 bcc; |
79df1bae JL |
3801 | |
3802 | *pdatalen = 0; | |
3803 | *pparmlen = 0; | |
3804 | ||
3805 | if (buf == NULL) | |
3806 | return -EINVAL; | |
3807 | ||
3808 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3809 | ||
820a803f JL |
3810 | bcc = get_bcc(&pSMBr->hdr); |
3811 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3812 | (char *)&pSMBr->ByteCount; |
3813 | ||
3814 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3815 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3816 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3817 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3818 | ||
3819 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3820 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3821 | ||
3822 | /* should we also check that parm and data areas do not overlap? */ | |
3823 | if (*ppparm > end_of_smb) { | |
f96637be | 3824 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3825 | return -EINVAL; |
3826 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3827 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3828 | return -EINVAL; |
3829 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3830 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3831 | return -EINVAL; |
3832 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3833 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3834 | *ppdata, data_count, (data_count + *ppdata), | |
3835 | end_of_smb, pSMBr); | |
79df1bae | 3836 | return -EINVAL; |
820a803f | 3837 | } else if (parm_count + data_count > bcc) { |
f96637be | 3838 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3839 | return -EINVAL; |
3840 | } | |
3841 | *pdatalen = data_count; | |
3842 | *pparmlen = parm_count; | |
3843 | return 0; | |
3844 | } | |
3845 | ||
0a4b92c0 SF |
3846 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3847 | int | |
6d5786a3 | 3848 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3849 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3850 | { |
3851 | int rc = 0; | |
3852 | int buf_type = 0; | |
ad7a2926 | 3853 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3854 | struct kvec iov[1]; |
da502f7d | 3855 | struct kvec rsp_iov; |
0a4b92c0 | 3856 | |
f96637be | 3857 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3858 | |
630f3f0c SF |
3859 | *pbuflen = 0; |
3860 | *acl_inf = NULL; | |
3861 | ||
b9c7a2bb | 3862 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3863 | 8 /* parm len */, tcon, (void **) &pSMB); |
3864 | if (rc) | |
3865 | return rc; | |
3866 | ||
3867 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3868 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3869 | pSMB->MaxSetupCount = 0; | |
3870 | pSMB->Fid = fid; /* file handle always le */ | |
3871 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3872 | CIFS_ACL_DACL); | |
3873 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3874 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3875 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3876 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3877 | |
a761ac57 | 3878 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3879 | 0, &rsp_iov); |
3880 | cifs_small_buf_release(pSMB); | |
44c58186 | 3881 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3882 | if (rc) { |
f96637be | 3883 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3884 | } else { /* decode response */ |
ad7a2926 | 3885 | __le32 *parm; |
630f3f0c SF |
3886 | __u32 parm_len; |
3887 | __u32 acl_len; | |
50c2f753 | 3888 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3889 | char *pdata; |
0a4b92c0 SF |
3890 | |
3891 | /* validate_nttransact */ | |
da502f7d | 3892 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3893 | &pdata, &parm_len, pbuflen); |
790fe579 | 3894 | if (rc) |
0a4b92c0 | 3895 | goto qsec_out; |
da502f7d | 3896 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3897 | |
f96637be JP |
3898 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3899 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3900 | |
3901 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3902 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3903 | *pbuflen = 0; |
0a4b92c0 SF |
3904 | goto qsec_out; |
3905 | } | |
3906 | ||
3907 | /* BB check that data area is minimum length and as big as acl_len */ | |
3908 | ||
af6f4612 | 3909 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3910 | if (acl_len != *pbuflen) { |
f96637be JP |
3911 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3912 | acl_len, *pbuflen); | |
630f3f0c SF |
3913 | if (*pbuflen > acl_len) |
3914 | *pbuflen = acl_len; | |
3915 | } | |
0a4b92c0 | 3916 | |
630f3f0c SF |
3917 | /* check if buffer is big enough for the acl |
3918 | header followed by the smallest SID */ | |
3919 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3920 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3921 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3922 | rc = -EINVAL; |
3923 | *pbuflen = 0; | |
3924 | } else { | |
f7f7c185 | 3925 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3926 | if (*acl_inf == NULL) { |
3927 | *pbuflen = 0; | |
3928 | rc = -ENOMEM; | |
3929 | } | |
630f3f0c | 3930 | } |
0a4b92c0 SF |
3931 | } |
3932 | qsec_out: | |
da502f7d | 3933 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3934 | return rc; |
3935 | } | |
97837582 SF |
3936 | |
3937 | int | |
6d5786a3 | 3938 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3939 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3940 | { |
3941 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3942 | int rc = 0; | |
3943 | int bytes_returned = 0; | |
3944 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3945 | void *pSMBr; |
97837582 SF |
3946 | |
3947 | setCifsAclRetry: | |
b2a3ad9c | 3948 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3949 | if (rc) |
b2a3ad9c | 3950 | return rc; |
97837582 SF |
3951 | |
3952 | pSMB->MaxSetupCount = 0; | |
3953 | pSMB->Reserved = 0; | |
3954 | ||
3955 | param_count = 8; | |
3956 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3957 | data_count = acllen; | |
3958 | data_offset = param_offset + param_count; | |
3959 | byte_count = 3 /* pad */ + param_count; | |
3960 | ||
3961 | pSMB->DataCount = cpu_to_le32(data_count); | |
3962 | pSMB->TotalDataCount = pSMB->DataCount; | |
3963 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3964 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3965 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3966 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3967 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3968 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3969 | pSMB->SetupCount = 0; | |
3970 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3971 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3972 | ||
3973 | pSMB->Fid = fid; /* file handle always le */ | |
3974 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3975 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3976 | |
3977 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3978 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3979 | data_offset, pntsd, acllen); | |
be8e3b00 | 3980 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3981 | } else |
be8e3b00 | 3982 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3983 | |
3984 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3985 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3986 | ||
f96637be JP |
3987 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3988 | bytes_returned, rc); | |
97837582 | 3989 | if (rc) |
f96637be | 3990 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3991 | cifs_buf_release(pSMB); |
3992 | ||
3993 | if (rc == -EAGAIN) | |
3994 | goto setCifsAclRetry; | |
3995 | ||
3996 | return (rc); | |
3997 | } | |
3998 | ||
79df1bae | 3999 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 4000 | |
6b8edfe0 SF |
4001 | /* Legacy Query Path Information call for lookup to old servers such |
4002 | as Win9x/WinME */ | |
68889f26 PS |
4003 | int |
4004 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
4005 | const char *search_name, FILE_ALL_INFO *data, | |
4006 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 4007 | { |
ad7a2926 SF |
4008 | QUERY_INFORMATION_REQ *pSMB; |
4009 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
4010 | int rc = 0; |
4011 | int bytes_returned; | |
4012 | int name_len; | |
4013 | ||
f96637be | 4014 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
4015 | QInfRetry: |
4016 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 4017 | (void **) &pSMBr); |
6b8edfe0 SF |
4018 | if (rc) |
4019 | return rc; | |
4020 | ||
4021 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4022 | name_len = | |
acbbb76a | 4023 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 4024 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4025 | remap); |
6b8edfe0 SF |
4026 | name_len++; /* trailing null */ |
4027 | name_len *= 2; | |
50c2f753 | 4028 | } else { |
68889f26 | 4029 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 4030 | name_len++; /* trailing null */ |
68889f26 | 4031 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
4032 | } |
4033 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4034 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4035 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4036 | pSMB->ByteCount = cpu_to_le16(name_len); |
4037 | ||
4038 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4039 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4040 | if (rc) { |
f96637be | 4041 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4042 | } else if (data) { |
1bd5bbcb SF |
4043 | struct timespec ts; |
4044 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
4045 | |
4046 | /* decode response */ | |
1bd5bbcb | 4047 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4048 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4049 | ts.tv_nsec = 0; |
4050 | ts.tv_sec = time; | |
4051 | /* decode time fields */ | |
68889f26 PS |
4052 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4053 | data->LastWriteTime = data->ChangeTime; | |
4054 | data->LastAccessTime = 0; | |
4055 | data->AllocationSize = | |
70ca734a | 4056 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4057 | data->EndOfFile = data->AllocationSize; |
4058 | data->Attributes = | |
70ca734a | 4059 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4060 | } else |
4061 | rc = -EIO; /* bad buffer passed in */ | |
4062 | ||
4063 | cifs_buf_release(pSMB); | |
4064 | ||
4065 | if (rc == -EAGAIN) | |
4066 | goto QInfRetry; | |
4067 | ||
4068 | return rc; | |
4069 | } | |
4070 | ||
bcd5357f | 4071 | int |
6d5786a3 | 4072 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4073 | u16 netfid, FILE_ALL_INFO *pFindData) |
4074 | { | |
4075 | struct smb_t2_qfi_req *pSMB = NULL; | |
4076 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4077 | int rc = 0; | |
4078 | int bytes_returned; | |
4079 | __u16 params, byte_count; | |
4080 | ||
4081 | QFileInfoRetry: | |
4082 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4083 | (void **) &pSMBr); | |
4084 | if (rc) | |
4085 | return rc; | |
4086 | ||
4087 | params = 2 /* level */ + 2 /* fid */; | |
4088 | pSMB->t2.TotalDataCount = 0; | |
4089 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4090 | /* BB find exact max data count below from sess structure BB */ | |
4091 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4092 | pSMB->t2.MaxSetupCount = 0; | |
4093 | pSMB->t2.Reserved = 0; | |
4094 | pSMB->t2.Flags = 0; | |
4095 | pSMB->t2.Timeout = 0; | |
4096 | pSMB->t2.Reserved2 = 0; | |
4097 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4098 | Fid) - 4); | |
4099 | pSMB->t2.DataCount = 0; | |
4100 | pSMB->t2.DataOffset = 0; | |
4101 | pSMB->t2.SetupCount = 1; | |
4102 | pSMB->t2.Reserved3 = 0; | |
4103 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4104 | byte_count = params + 1 /* pad */ ; | |
4105 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4106 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4107 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4108 | pSMB->Pad = 0; | |
4109 | pSMB->Fid = netfid; | |
be8e3b00 | 4110 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4111 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4112 | |
bcd5357f JL |
4113 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4114 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4115 | if (rc) { | |
ebcc943c | 4116 | cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f JL |
4117 | } else { /* decode response */ |
4118 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4119 | |
bcd5357f JL |
4120 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4121 | rc = -EIO; | |
820a803f | 4122 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4123 | rc = -EIO; /* bad smb */ |
4124 | else if (pFindData) { | |
4125 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4126 | memcpy((char *) pFindData, | |
4127 | (char *) &pSMBr->hdr.Protocol + | |
4128 | data_offset, sizeof(FILE_ALL_INFO)); | |
4129 | } else | |
4130 | rc = -ENOMEM; | |
4131 | } | |
4132 | cifs_buf_release(pSMB); | |
4133 | if (rc == -EAGAIN) | |
4134 | goto QFileInfoRetry; | |
6b8edfe0 | 4135 | |
bcd5357f JL |
4136 | return rc; |
4137 | } | |
6b8edfe0 | 4138 | |
1da177e4 | 4139 | int |
6d5786a3 | 4140 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4141 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4142 | int legacy /* old style infolevel */, |
737b758c | 4143 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4144 | { |
68889f26 | 4145 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4146 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4147 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4148 | int rc = 0; | |
4149 | int bytes_returned; | |
4150 | int name_len; | |
4151 | __u16 params, byte_count; | |
4152 | ||
f96637be | 4153 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4154 | QPathInfoRetry: |
4155 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4156 | (void **) &pSMBr); | |
4157 | if (rc) | |
4158 | return rc; | |
4159 | ||
4160 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4161 | name_len = | |
68889f26 | 4162 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4163 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4164 | name_len++; /* trailing null */ |
4165 | name_len *= 2; | |
50c2f753 | 4166 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4167 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4168 | name_len++; /* trailing null */ |
68889f26 | 4169 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4170 | } |
4171 | ||
50c2f753 | 4172 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4173 | pSMB->TotalDataCount = 0; |
4174 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4175 | /* BB find exact max SMB PDU from sess structure BB */ |
4176 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4177 | pSMB->MaxSetupCount = 0; |
4178 | pSMB->Reserved = 0; | |
4179 | pSMB->Flags = 0; | |
4180 | pSMB->Timeout = 0; | |
4181 | pSMB->Reserved2 = 0; | |
4182 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4183 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4184 | pSMB->DataCount = 0; |
4185 | pSMB->DataOffset = 0; | |
4186 | pSMB->SetupCount = 1; | |
4187 | pSMB->Reserved3 = 0; | |
4188 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4189 | byte_count = params + 1 /* pad */ ; | |
4190 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4191 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4192 | if (legacy) |
acf1a1b1 SF |
4193 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4194 | else | |
4195 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4196 | pSMB->Reserved4 = 0; |
be8e3b00 | 4197 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4198 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4199 | ||
4200 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4201 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4202 | if (rc) { | |
f96637be | 4203 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4204 | } else { /* decode response */ |
4205 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4206 | ||
acf1a1b1 SF |
4207 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4208 | rc = -EIO; | |
820a803f | 4209 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4210 | rc = -EIO; /* bad smb */ |
820a803f | 4211 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4212 | rc = -EIO; /* 24 or 26 expected but we do not read |
4213 | last field */ | |
68889f26 | 4214 | else if (data) { |
acf1a1b1 | 4215 | int size; |
1da177e4 | 4216 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4217 | |
68889f26 PS |
4218 | /* |
4219 | * On legacy responses we do not read the last field, | |
4220 | * EAsize, fortunately since it varies by subdialect and | |
4221 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4222 | * bytes depending but we don't care here. | |
4223 | */ | |
ad7a2926 | 4224 | if (legacy) |
acf1a1b1 SF |
4225 | size = sizeof(FILE_INFO_STANDARD); |
4226 | else | |
4227 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4228 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4229 | data_offset, size); |
1da177e4 LT |
4230 | } else |
4231 | rc = -ENOMEM; | |
4232 | } | |
4233 | cifs_buf_release(pSMB); | |
4234 | if (rc == -EAGAIN) | |
4235 | goto QPathInfoRetry; | |
4236 | ||
4237 | return rc; | |
4238 | } | |
4239 | ||
c8634fd3 | 4240 | int |
6d5786a3 | 4241 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4242 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4243 | { | |
4244 | struct smb_t2_qfi_req *pSMB = NULL; | |
4245 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4246 | int rc = 0; | |
4247 | int bytes_returned; | |
4248 | __u16 params, byte_count; | |
4249 | ||
4250 | UnixQFileInfoRetry: | |
4251 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4252 | (void **) &pSMBr); | |
4253 | if (rc) | |
4254 | return rc; | |
4255 | ||
4256 | params = 2 /* level */ + 2 /* fid */; | |
4257 | pSMB->t2.TotalDataCount = 0; | |
4258 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4259 | /* BB find exact max data count below from sess structure BB */ | |
4260 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4261 | pSMB->t2.MaxSetupCount = 0; | |
4262 | pSMB->t2.Reserved = 0; | |
4263 | pSMB->t2.Flags = 0; | |
4264 | pSMB->t2.Timeout = 0; | |
4265 | pSMB->t2.Reserved2 = 0; | |
4266 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4267 | Fid) - 4); | |
4268 | pSMB->t2.DataCount = 0; | |
4269 | pSMB->t2.DataOffset = 0; | |
4270 | pSMB->t2.SetupCount = 1; | |
4271 | pSMB->t2.Reserved3 = 0; | |
4272 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4273 | byte_count = params + 1 /* pad */ ; | |
4274 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4275 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4276 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4277 | pSMB->Pad = 0; | |
4278 | pSMB->Fid = netfid; | |
be8e3b00 | 4279 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4280 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4281 | |
4282 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4283 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4284 | if (rc) { | |
ebcc943c | 4285 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd3 JL |
4286 | } else { /* decode response */ |
4287 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4288 | ||
820a803f | 4289 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4290 | 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 |
4291 | rc = -EIO; /* bad smb */ |
4292 | } else { | |
4293 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4294 | memcpy((char *) pFindData, | |
4295 | (char *) &pSMBr->hdr.Protocol + | |
4296 | data_offset, | |
4297 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4298 | } | |
4299 | } | |
4300 | ||
4301 | cifs_buf_release(pSMB); | |
4302 | if (rc == -EAGAIN) | |
4303 | goto UnixQFileInfoRetry; | |
4304 | ||
4305 | return rc; | |
4306 | } | |
4307 | ||
1da177e4 | 4308 | int |
6d5786a3 | 4309 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4310 | const unsigned char *searchName, |
582d21e5 | 4311 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4312 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4313 | { |
4314 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4315 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4316 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4317 | int rc = 0; | |
4318 | int bytes_returned = 0; | |
4319 | int name_len; | |
4320 | __u16 params, byte_count; | |
4321 | ||
f96637be | 4322 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4323 | UnixQPathInfoRetry: |
4324 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4325 | (void **) &pSMBr); | |
4326 | if (rc) | |
4327 | return rc; | |
4328 | ||
4329 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4330 | name_len = | |
acbbb76a SF |
4331 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4332 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4333 | name_len++; /* trailing null */ |
4334 | name_len *= 2; | |
50c2f753 | 4335 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4336 | name_len = strnlen(searchName, PATH_MAX); |
4337 | name_len++; /* trailing null */ | |
4338 | strncpy(pSMB->FileName, searchName, name_len); | |
4339 | } | |
4340 | ||
50c2f753 | 4341 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4342 | pSMB->TotalDataCount = 0; |
4343 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4344 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4345 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4346 | pSMB->MaxSetupCount = 0; |
4347 | pSMB->Reserved = 0; | |
4348 | pSMB->Flags = 0; | |
4349 | pSMB->Timeout = 0; | |
4350 | pSMB->Reserved2 = 0; | |
4351 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4352 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4353 | pSMB->DataCount = 0; |
4354 | pSMB->DataOffset = 0; | |
4355 | pSMB->SetupCount = 1; | |
4356 | pSMB->Reserved3 = 0; | |
4357 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4358 | byte_count = params + 1 /* pad */ ; | |
4359 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4360 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4361 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4362 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4363 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4364 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4365 | ||
4366 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4367 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4368 | if (rc) { | |
ebcc943c | 4369 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4 LT |
4370 | } else { /* decode response */ |
4371 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4372 | ||
820a803f | 4373 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4374 | 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 |
4375 | rc = -EIO; /* bad smb */ |
4376 | } else { | |
4377 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4378 | memcpy((char *) pFindData, | |
4379 | (char *) &pSMBr->hdr.Protocol + | |
4380 | data_offset, | |
630f3f0c | 4381 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4382 | } |
4383 | } | |
4384 | cifs_buf_release(pSMB); | |
4385 | if (rc == -EAGAIN) | |
4386 | goto UnixQPathInfoRetry; | |
4387 | ||
4388 | return rc; | |
4389 | } | |
4390 | ||
1da177e4 LT |
4391 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4392 | int | |
6d5786a3 | 4393 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4394 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4395 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4396 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4397 | { |
4398 | /* level 257 SMB_ */ | |
4399 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4400 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4401 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4402 | int rc = 0; |
4403 | int bytes_returned = 0; | |
c052e2b4 | 4404 | int name_len, remap; |
1da177e4 | 4405 | __u16 params, byte_count; |
c052e2b4 | 4406 | struct nls_table *nls_codepage; |
1da177e4 | 4407 | |
f96637be | 4408 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4409 | |
4410 | findFirstRetry: | |
4411 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4412 | (void **) &pSMBr); | |
4413 | if (rc) | |
4414 | return rc; | |
4415 | ||
c052e2b4 | 4416 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4417 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4418 | |
1da177e4 LT |
4419 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4420 | name_len = | |
acbbb76a SF |
4421 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4422 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4423 | /* We can not add the asterik earlier in case |
4424 | it got remapped to 0xF03A as if it were part of the | |
4425 | directory name instead of a wildcard */ | |
1da177e4 | 4426 | name_len *= 2; |
c052e2b4 SP |
4427 | if (msearch) { |
4428 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4429 | pSMB->FileName[name_len+1] = 0; | |
4430 | pSMB->FileName[name_len+2] = '*'; | |
4431 | pSMB->FileName[name_len+3] = 0; | |
4432 | name_len += 4; /* now the trailing null */ | |
4433 | /* null terminate just in case */ | |
4434 | pSMB->FileName[name_len] = 0; | |
4435 | pSMB->FileName[name_len+1] = 0; | |
4436 | name_len += 2; | |
4437 | } | |
1da177e4 LT |
4438 | } else { /* BB add check for overrun of SMB buf BB */ |
4439 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4440 | /* BB fix here and in unicode clause above ie |
790fe579 | 4441 | if (name_len > buffersize-header) |
1da177e4 LT |
4442 | free buffer exit; BB */ |
4443 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4444 | if (msearch) { |
4445 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4446 | pSMB->FileName[name_len+1] = '*'; | |
4447 | pSMB->FileName[name_len+2] = 0; | |
4448 | name_len += 3; | |
4449 | } | |
1da177e4 LT |
4450 | } |
4451 | ||
4452 | params = 12 + name_len /* includes null */ ; | |
4453 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4454 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4455 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4456 | pSMB->MaxSetupCount = 0; |
4457 | pSMB->Reserved = 0; | |
4458 | pSMB->Flags = 0; | |
4459 | pSMB->Timeout = 0; | |
4460 | pSMB->Reserved2 = 0; | |
4461 | byte_count = params + 1 /* pad */ ; | |
4462 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4463 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4464 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4465 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4466 | - 4); | |
1da177e4 LT |
4467 | pSMB->DataCount = 0; |
4468 | pSMB->DataOffset = 0; | |
4469 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4470 | pSMB->Reserved3 = 0; | |
4471 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4472 | pSMB->SearchAttributes = | |
4473 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4474 | ATTR_DIRECTORY); | |
50c2f753 | 4475 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4476 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4477 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4478 | ||
4479 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4480 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4481 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4482 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4483 | ||
4484 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4485 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4486 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4487 | |
88274815 SF |
4488 | if (rc) {/* BB add logic to retry regular search if Unix search |
4489 | rejected unexpectedly by server */ | |
1da177e4 | 4490 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4491 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4492 | |
88274815 | 4493 | cifs_buf_release(pSMB); |
1da177e4 LT |
4494 | |
4495 | /* BB eventually could optimize out free and realloc of buf */ | |
4496 | /* for this case */ | |
4497 | if (rc == -EAGAIN) | |
4498 | goto findFirstRetry; | |
4499 | } else { /* decode response */ | |
4500 | /* BB remember to free buffer if error BB */ | |
4501 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4502 | if (rc == 0) { |
b77d753c SF |
4503 | unsigned int lnoff; |
4504 | ||
1da177e4 | 4505 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4506 | psrch_inf->unicode = true; |
1da177e4 | 4507 | else |
4b18f2a9 | 4508 | psrch_inf->unicode = false; |
1da177e4 LT |
4509 | |
4510 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4511 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4512 | psrch_inf->srch_entries_start = |
4513 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4514 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4515 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4516 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4517 | ||
790fe579 | 4518 | if (parms->EndofSearch) |
4b18f2a9 | 4519 | psrch_inf->endOfSearch = true; |
1da177e4 | 4520 | else |
4b18f2a9 | 4521 | psrch_inf->endOfSearch = false; |
1da177e4 | 4522 | |
50c2f753 SF |
4523 | psrch_inf->entries_in_buffer = |
4524 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4525 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4526 | psrch_inf->entries_in_buffer; |
b77d753c | 4527 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4528 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4529 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4530 | psrch_inf->last_entry = NULL; |
4531 | return rc; | |
4532 | } | |
4533 | ||
0752f152 | 4534 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4535 | lnoff; |
4536 | ||
c052e2b4 SP |
4537 | if (pnetfid) |
4538 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4539 | } else { |
4540 | cifs_buf_release(pSMB); | |
4541 | } | |
4542 | } | |
4543 | ||
4544 | return rc; | |
4545 | } | |
4546 | ||
6d5786a3 PS |
4547 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4548 | __u16 searchHandle, __u16 search_flags, | |
4549 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4550 | { |
4551 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4552 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4553 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4554 | char *response_data; |
4555 | int rc = 0; | |
9438fabb JL |
4556 | int bytes_returned; |
4557 | unsigned int name_len; | |
1da177e4 LT |
4558 | __u16 params, byte_count; |
4559 | ||
f96637be | 4560 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4561 | |
4b18f2a9 | 4562 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4563 | return -ENOENT; |
4564 | ||
4565 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4566 | (void **) &pSMBr); | |
4567 | if (rc) | |
4568 | return rc; | |
4569 | ||
50c2f753 | 4570 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4571 | byte_count = 0; |
4572 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4573 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4574 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4575 | pSMB->MaxSetupCount = 0; |
4576 | pSMB->Reserved = 0; | |
4577 | pSMB->Flags = 0; | |
4578 | pSMB->Timeout = 0; | |
4579 | pSMB->Reserved2 = 0; | |
4580 | pSMB->ParameterOffset = cpu_to_le16( | |
4581 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4582 | pSMB->DataCount = 0; | |
4583 | pSMB->DataOffset = 0; | |
4584 | pSMB->SetupCount = 1; | |
4585 | pSMB->Reserved3 = 0; | |
4586 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4587 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4588 | pSMB->SearchCount = | |
630f3f0c | 4589 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4590 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4591 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4592 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4593 | |
4594 | name_len = psrch_inf->resume_name_len; | |
4595 | params += name_len; | |
790fe579 | 4596 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4597 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4598 | byte_count += name_len; | |
ef6724e3 SF |
4599 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4600 | pSMB->ResumeFileName[name_len] = 0; | |
4601 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4602 | } else { |
4603 | rc = -EINVAL; | |
4604 | goto FNext2_err_exit; | |
4605 | } | |
4606 | byte_count = params + 1 /* pad */ ; | |
4607 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4608 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4609 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4610 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4611 | |
1da177e4 LT |
4612 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4613 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4614 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4615 | if (rc) { |
4616 | if (rc == -EBADF) { | |
4b18f2a9 | 4617 | psrch_inf->endOfSearch = true; |
6353450a | 4618 | cifs_buf_release(pSMB); |
50c2f753 | 4619 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4620 | } else |
f96637be | 4621 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4622 | } else { /* decode response */ |
4623 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4624 | |
790fe579 | 4625 | if (rc == 0) { |
b77d753c SF |
4626 | unsigned int lnoff; |
4627 | ||
1da177e4 LT |
4628 | /* BB fixme add lock for file (srch_info) struct here */ |
4629 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4630 | psrch_inf->unicode = true; |
1da177e4 | 4631 | else |
4b18f2a9 | 4632 | psrch_inf->unicode = false; |
1da177e4 LT |
4633 | response_data = (char *) &pSMBr->hdr.Protocol + |
4634 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4635 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4636 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4637 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4638 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4639 | cifs_small_buf_release( |
4640 | psrch_inf->ntwrk_buf_start); | |
4641 | else | |
4642 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4643 | psrch_inf->srch_entries_start = response_data; |
4644 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4645 | psrch_inf->smallBuf = 0; |
790fe579 | 4646 | if (parms->EndofSearch) |
4b18f2a9 | 4647 | psrch_inf->endOfSearch = true; |
1da177e4 | 4648 | else |
4b18f2a9 | 4649 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4650 | psrch_inf->entries_in_buffer = |
4651 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4652 | psrch_inf->index_of_last_entry += |
4653 | psrch_inf->entries_in_buffer; | |
b77d753c | 4654 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4655 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4656 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4657 | psrch_inf->last_entry = NULL; |
4658 | return rc; | |
4659 | } else | |
4660 | psrch_inf->last_entry = | |
4661 | psrch_inf->srch_entries_start + lnoff; | |
4662 | ||
f96637be JP |
4663 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4664 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4665 | |
4666 | /* BB fixme add unlock here */ | |
4667 | } | |
4668 | ||
4669 | } | |
4670 | ||
4671 | /* BB On error, should we leave previous search buf (and count and | |
4672 | last entry fields) intact or free the previous one? */ | |
4673 | ||
4674 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4675 | since file handle passed in no longer valid */ | |
4676 | FNext2_err_exit: | |
4677 | if (rc != 0) | |
4678 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4679 | return rc; |
4680 | } | |
4681 | ||
4682 | int | |
6d5786a3 | 4683 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4684 | const __u16 searchHandle) |
1da177e4 LT |
4685 | { |
4686 | int rc = 0; | |
4687 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4688 | |
f96637be | 4689 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4690 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4691 | ||
4692 | /* no sense returning error if session restarted | |
4693 | as file handle has been closed */ | |
790fe579 | 4694 | if (rc == -EAGAIN) |
1da177e4 LT |
4695 | return 0; |
4696 | if (rc) | |
4697 | return rc; | |
4698 | ||
1da177e4 LT |
4699 | pSMB->FileID = searchHandle; |
4700 | pSMB->ByteCount = 0; | |
792af7b0 | 4701 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4702 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4703 | if (rc) |
f96637be | 4704 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4705 | |
44c58186 | 4706 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4707 | |
4708 | /* Since session is dead, search handle closed on server already */ | |
4709 | if (rc == -EAGAIN) | |
4710 | rc = 0; | |
4711 | ||
4712 | return rc; | |
4713 | } | |
4714 | ||
1da177e4 | 4715 | int |
6d5786a3 | 4716 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4717 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4718 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4719 | { |
4720 | int rc = 0; | |
4721 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4722 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4723 | int name_len, bytes_returned; | |
4724 | __u16 params, byte_count; | |
4725 | ||
f96637be | 4726 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4727 | if (tcon == NULL) |
50c2f753 | 4728 | return -ENODEV; |
1da177e4 LT |
4729 | |
4730 | GetInodeNumberRetry: | |
4731 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4732 | (void **) &pSMBr); |
1da177e4 LT |
4733 | if (rc) |
4734 | return rc; | |
4735 | ||
1da177e4 LT |
4736 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4737 | name_len = | |
acbbb76a | 4738 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4739 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4740 | remap); |
1da177e4 LT |
4741 | name_len++; /* trailing null */ |
4742 | name_len *= 2; | |
50c2f753 | 4743 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4744 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4745 | name_len++; /* trailing null */ |
1208ef1f | 4746 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4747 | } |
4748 | ||
4749 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4750 | pSMB->TotalDataCount = 0; | |
4751 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4752 | /* BB find exact max data count below from sess structure BB */ | |
4753 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4754 | pSMB->MaxSetupCount = 0; | |
4755 | pSMB->Reserved = 0; | |
4756 | pSMB->Flags = 0; | |
4757 | pSMB->Timeout = 0; | |
4758 | pSMB->Reserved2 = 0; | |
4759 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4760 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4761 | pSMB->DataCount = 0; |
4762 | pSMB->DataOffset = 0; | |
4763 | pSMB->SetupCount = 1; | |
4764 | pSMB->Reserved3 = 0; | |
4765 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4766 | byte_count = params + 1 /* pad */ ; | |
4767 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4768 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4769 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4770 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4771 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4772 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4773 | ||
4774 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4775 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4776 | if (rc) { | |
f96637be | 4777 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4778 | } else { |
4779 | /* decode response */ | |
4780 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4781 | /* BB also check enough total bytes returned */ |
820a803f | 4782 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4783 | /* If rc should we check for EOPNOSUPP and |
4784 | disable the srvino flag? or in caller? */ | |
4785 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4786 | else { |
1da177e4 LT |
4787 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4788 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4789 | struct file_internal_info *pfinfo; |
1da177e4 | 4790 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4791 | if (count < 8) { |
f96637be | 4792 | cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4793 | rc = -EIO; |
4794 | goto GetInodeNumOut; | |
4795 | } | |
4796 | pfinfo = (struct file_internal_info *) | |
4797 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4798 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4799 | } |
4800 | } | |
4801 | GetInodeNumOut: | |
4802 | cifs_buf_release(pSMB); | |
4803 | if (rc == -EAGAIN) | |
4804 | goto GetInodeNumberRetry; | |
4805 | return rc; | |
4806 | } | |
1da177e4 LT |
4807 | |
4808 | int | |
6d5786a3 | 4809 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4810 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4811 | unsigned int *num_of_nodes, |
737b758c | 4812 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4813 | { |
4814 | /* TRANS2_GET_DFS_REFERRAL */ | |
4815 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4816 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4817 | int rc = 0; |
4818 | int bytes_returned; | |
4819 | int name_len; | |
1da177e4 | 4820 | __u16 params, byte_count; |
c2cf07d5 SF |
4821 | *num_of_nodes = 0; |
4822 | *target_nodes = NULL; | |
1da177e4 | 4823 | |
f96637be | 4824 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
1da177e4 LT |
4825 | if (ses == NULL) |
4826 | return -ENODEV; | |
4827 | getDFSRetry: | |
4828 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4829 | (void **) &pSMBr); | |
4830 | if (rc) | |
4831 | return rc; | |
50c2f753 SF |
4832 | |
4833 | /* server pointer checked in called function, | |
1982c344 | 4834 | but should never be null here anyway */ |
88257360 | 4835 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4836 | pSMB->hdr.Tid = ses->ipc_tid; |
4837 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4838 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4839 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4840 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4841 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4842 | |
4843 | if (ses->capabilities & CAP_UNICODE) { | |
4844 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4845 | name_len = | |
acbbb76a | 4846 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4847 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4848 | remap); |
1da177e4 LT |
4849 | name_len++; /* trailing null */ |
4850 | name_len *= 2; | |
50c2f753 | 4851 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4852 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4853 | name_len++; /* trailing null */ |
b669f33c | 4854 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4855 | } |
4856 | ||
65c3b205 | 4857 | if (ses->server->sign) |
38d77c50 | 4858 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4859 | |
50c2f753 | 4860 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4861 | |
1da177e4 LT |
4862 | params = 2 /* level */ + name_len /*includes null */ ; |
4863 | pSMB->TotalDataCount = 0; | |
4864 | pSMB->DataCount = 0; | |
4865 | pSMB->DataOffset = 0; | |
4866 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4867 | /* BB find exact max SMB PDU from sess structure BB */ |
4868 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4869 | pSMB->MaxSetupCount = 0; |
4870 | pSMB->Reserved = 0; | |
4871 | pSMB->Flags = 0; | |
4872 | pSMB->Timeout = 0; | |
4873 | pSMB->Reserved2 = 0; | |
4874 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4875 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4876 | pSMB->SetupCount = 1; |
4877 | pSMB->Reserved3 = 0; | |
4878 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4879 | byte_count = params + 3 /* pad */ ; | |
4880 | pSMB->ParameterCount = cpu_to_le16(params); | |
4881 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4882 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4883 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4884 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4885 | ||
4886 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4887 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4888 | if (rc) { | |
f96637be | 4889 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4890 | goto GetDFSRefExit; |
4891 | } | |
4892 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4893 | |
c2cf07d5 | 4894 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4895 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4896 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4897 | goto GetDFSRefExit; |
4898 | } | |
c2cf07d5 | 4899 | |
f96637be JP |
4900 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4901 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4902 | |
fec4585f | 4903 | /* parse returned result into more usable form */ |
4ecce920 AA |
4904 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4905 | le16_to_cpu(pSMBr->t2.DataCount), | |
4906 | num_of_nodes, target_nodes, nls_codepage, | |
4907 | remap, search_name, | |
284316dd | 4908 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4909 | |
1da177e4 | 4910 | GetDFSRefExit: |
0d817bc0 | 4911 | cifs_buf_release(pSMB); |
1da177e4 LT |
4912 | |
4913 | if (rc == -EAGAIN) | |
4914 | goto getDFSRetry; | |
4915 | ||
4916 | return rc; | |
4917 | } | |
4918 | ||
20962438 SF |
4919 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4920 | int | |
6d5786a3 PS |
4921 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4922 | struct kstatfs *FSData) | |
20962438 SF |
4923 | { |
4924 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4925 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4926 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4927 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4928 | int rc = 0; | |
4929 | int bytes_returned = 0; | |
4930 | __u16 params, byte_count; | |
4931 | ||
f96637be | 4932 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4933 | oldQFSInfoRetry: |
4934 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4935 | (void **) &pSMBr); | |
4936 | if (rc) | |
4937 | return rc; | |
20962438 SF |
4938 | |
4939 | params = 2; /* level */ | |
4940 | pSMB->TotalDataCount = 0; | |
4941 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4942 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4943 | pSMB->MaxSetupCount = 0; | |
4944 | pSMB->Reserved = 0; | |
4945 | pSMB->Flags = 0; | |
4946 | pSMB->Timeout = 0; | |
4947 | pSMB->Reserved2 = 0; | |
4948 | byte_count = params + 1 /* pad */ ; | |
4949 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4950 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4951 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4952 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4953 | pSMB->DataCount = 0; | |
4954 | pSMB->DataOffset = 0; | |
4955 | pSMB->SetupCount = 1; | |
4956 | pSMB->Reserved3 = 0; | |
4957 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4958 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4959 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4960 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4961 | ||
4962 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4963 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4964 | if (rc) { | |
f96637be | 4965 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4966 | } else { /* decode response */ |
4967 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4968 | ||
820a803f | 4969 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4970 | rc = -EIO; /* bad smb */ |
4971 | else { | |
4972 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4973 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4974 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4975 | |
50c2f753 | 4976 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4977 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4978 | FSData->f_bsize = | |
4979 | le16_to_cpu(response_data->BytesPerSector) * | |
4980 | le32_to_cpu(response_data-> | |
4981 | SectorsPerAllocationUnit); | |
4982 | FSData->f_blocks = | |
50c2f753 | 4983 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4984 | FSData->f_bfree = FSData->f_bavail = |
4985 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4986 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4987 | (unsigned long long)FSData->f_blocks, | |
4988 | (unsigned long long)FSData->f_bfree, | |
4989 | FSData->f_bsize); | |
20962438 SF |
4990 | } |
4991 | } | |
4992 | cifs_buf_release(pSMB); | |
4993 | ||
4994 | if (rc == -EAGAIN) | |
4995 | goto oldQFSInfoRetry; | |
4996 | ||
4997 | return rc; | |
4998 | } | |
4999 | ||
1da177e4 | 5000 | int |
6d5786a3 PS |
5001 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5002 | struct kstatfs *FSData) | |
1da177e4 LT |
5003 | { |
5004 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5005 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5006 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5007 | FILE_SYSTEM_INFO *response_data; | |
5008 | int rc = 0; | |
5009 | int bytes_returned = 0; | |
5010 | __u16 params, byte_count; | |
5011 | ||
f96637be | 5012 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5013 | QFSInfoRetry: |
5014 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5015 | (void **) &pSMBr); | |
5016 | if (rc) | |
5017 | return rc; | |
5018 | ||
5019 | params = 2; /* level */ | |
5020 | pSMB->TotalDataCount = 0; | |
5021 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5022 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5023 | pSMB->MaxSetupCount = 0; |
5024 | pSMB->Reserved = 0; | |
5025 | pSMB->Flags = 0; | |
5026 | pSMB->Timeout = 0; | |
5027 | pSMB->Reserved2 = 0; | |
5028 | byte_count = params + 1 /* pad */ ; | |
5029 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5030 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5031 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5032 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5033 | pSMB->DataCount = 0; |
5034 | pSMB->DataOffset = 0; | |
5035 | pSMB->SetupCount = 1; | |
5036 | pSMB->Reserved3 = 0; | |
5037 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5038 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5039 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5040 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5041 | ||
5042 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5043 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5044 | if (rc) { | |
f96637be | 5045 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5046 | } else { /* decode response */ |
50c2f753 | 5047 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5048 | |
820a803f | 5049 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5050 | rc = -EIO; /* bad smb */ |
5051 | else { | |
5052 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5053 | |
5054 | response_data = | |
5055 | (FILE_SYSTEM_INFO | |
5056 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5057 | data_offset); | |
5058 | FSData->f_bsize = | |
5059 | le32_to_cpu(response_data->BytesPerSector) * | |
5060 | le32_to_cpu(response_data-> | |
5061 | SectorsPerAllocationUnit); | |
5062 | FSData->f_blocks = | |
5063 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5064 | FSData->f_bfree = FSData->f_bavail = | |
5065 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5066 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5067 | (unsigned long long)FSData->f_blocks, | |
5068 | (unsigned long long)FSData->f_bfree, | |
5069 | FSData->f_bsize); | |
1da177e4 LT |
5070 | } |
5071 | } | |
5072 | cifs_buf_release(pSMB); | |
5073 | ||
5074 | if (rc == -EAGAIN) | |
5075 | goto QFSInfoRetry; | |
5076 | ||
5077 | return rc; | |
5078 | } | |
5079 | ||
5080 | int | |
6d5786a3 | 5081 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5082 | { |
5083 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5084 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5085 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5086 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5087 | int rc = 0; | |
5088 | int bytes_returned = 0; | |
5089 | __u16 params, byte_count; | |
5090 | ||
f96637be | 5091 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5092 | QFSAttributeRetry: |
5093 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5094 | (void **) &pSMBr); | |
5095 | if (rc) | |
5096 | return rc; | |
5097 | ||
5098 | params = 2; /* level */ | |
5099 | pSMB->TotalDataCount = 0; | |
5100 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5101 | /* BB find exact max SMB PDU from sess structure BB */ |
5102 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5103 | pSMB->MaxSetupCount = 0; |
5104 | pSMB->Reserved = 0; | |
5105 | pSMB->Flags = 0; | |
5106 | pSMB->Timeout = 0; | |
5107 | pSMB->Reserved2 = 0; | |
5108 | byte_count = params + 1 /* pad */ ; | |
5109 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5110 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5111 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5112 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5113 | pSMB->DataCount = 0; |
5114 | pSMB->DataOffset = 0; | |
5115 | pSMB->SetupCount = 1; | |
5116 | pSMB->Reserved3 = 0; | |
5117 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5118 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5119 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5120 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5121 | ||
5122 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5123 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5124 | if (rc) { | |
f96637be | 5125 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5126 | } else { /* decode response */ |
5127 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5128 | ||
820a803f | 5129 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5130 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5131 | rc = -EIO; /* bad smb */ |
5132 | } else { | |
5133 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5134 | response_data = | |
5135 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5136 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5137 | data_offset); | |
5138 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5139 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5140 | } |
5141 | } | |
5142 | cifs_buf_release(pSMB); | |
5143 | ||
5144 | if (rc == -EAGAIN) | |
5145 | goto QFSAttributeRetry; | |
5146 | ||
5147 | return rc; | |
5148 | } | |
5149 | ||
5150 | int | |
6d5786a3 | 5151 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5152 | { |
5153 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5154 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5155 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5156 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5157 | int rc = 0; | |
5158 | int bytes_returned = 0; | |
5159 | __u16 params, byte_count; | |
5160 | ||
f96637be | 5161 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5162 | QFSDeviceRetry: |
5163 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5164 | (void **) &pSMBr); | |
5165 | if (rc) | |
5166 | return rc; | |
5167 | ||
5168 | params = 2; /* level */ | |
5169 | pSMB->TotalDataCount = 0; | |
5170 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5171 | /* BB find exact max SMB PDU from sess structure BB */ |
5172 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5173 | pSMB->MaxSetupCount = 0; |
5174 | pSMB->Reserved = 0; | |
5175 | pSMB->Flags = 0; | |
5176 | pSMB->Timeout = 0; | |
5177 | pSMB->Reserved2 = 0; | |
5178 | byte_count = params + 1 /* pad */ ; | |
5179 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5180 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5181 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5182 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5183 | |
5184 | pSMB->DataCount = 0; | |
5185 | pSMB->DataOffset = 0; | |
5186 | pSMB->SetupCount = 1; | |
5187 | pSMB->Reserved3 = 0; | |
5188 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5189 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5190 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5191 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5192 | ||
5193 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5194 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5195 | if (rc) { | |
f96637be | 5196 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5197 | } else { /* decode response */ |
5198 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5199 | ||
820a803f JL |
5200 | if (rc || get_bcc(&pSMBr->hdr) < |
5201 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5202 | rc = -EIO; /* bad smb */ |
5203 | else { | |
5204 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5205 | response_data = | |
737b758c SF |
5206 | (FILE_SYSTEM_DEVICE_INFO *) |
5207 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5208 | data_offset); |
5209 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5210 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5211 | } |
5212 | } | |
5213 | cifs_buf_release(pSMB); | |
5214 | ||
5215 | if (rc == -EAGAIN) | |
5216 | goto QFSDeviceRetry; | |
5217 | ||
5218 | return rc; | |
5219 | } | |
5220 | ||
5221 | int | |
6d5786a3 | 5222 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5223 | { |
5224 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5225 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5226 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5227 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5228 | int rc = 0; | |
5229 | int bytes_returned = 0; | |
5230 | __u16 params, byte_count; | |
5231 | ||
f96637be | 5232 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5233 | QFSUnixRetry: |
f569599a JL |
5234 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5235 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5236 | if (rc) |
5237 | return rc; | |
5238 | ||
5239 | params = 2; /* level */ | |
5240 | pSMB->TotalDataCount = 0; | |
5241 | pSMB->DataCount = 0; | |
5242 | pSMB->DataOffset = 0; | |
5243 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5244 | /* BB find exact max SMB PDU from sess structure BB */ |
5245 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5246 | pSMB->MaxSetupCount = 0; |
5247 | pSMB->Reserved = 0; | |
5248 | pSMB->Flags = 0; | |
5249 | pSMB->Timeout = 0; | |
5250 | pSMB->Reserved2 = 0; | |
5251 | byte_count = params + 1 /* pad */ ; | |
5252 | pSMB->ParameterCount = cpu_to_le16(params); | |
5253 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5254 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5255 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5256 | pSMB->SetupCount = 1; |
5257 | pSMB->Reserved3 = 0; | |
5258 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5259 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5260 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5261 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5262 | ||
5263 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5264 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5265 | if (rc) { | |
f96637be | 5266 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5267 | } else { /* decode response */ |
5268 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5269 | ||
820a803f | 5270 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5271 | rc = -EIO; /* bad smb */ |
5272 | } else { | |
5273 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5274 | response_data = | |
5275 | (FILE_SYSTEM_UNIX_INFO | |
5276 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5277 | data_offset); | |
5278 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5279 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5280 | } |
5281 | } | |
5282 | cifs_buf_release(pSMB); | |
5283 | ||
5284 | if (rc == -EAGAIN) | |
5285 | goto QFSUnixRetry; | |
5286 | ||
5287 | ||
5288 | return rc; | |
5289 | } | |
5290 | ||
ac67055e | 5291 | int |
6d5786a3 | 5292 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5293 | { |
5294 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5295 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5296 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5297 | int rc = 0; | |
5298 | int bytes_returned = 0; | |
5299 | __u16 params, param_offset, offset, byte_count; | |
5300 | ||
f96637be | 5301 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5302 | SETFSUnixRetry: |
f26282c9 | 5303 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5304 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5305 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5306 | if (rc) |
5307 | return rc; | |
5308 | ||
5309 | params = 4; /* 2 bytes zero followed by info level. */ | |
5310 | pSMB->MaxSetupCount = 0; | |
5311 | pSMB->Reserved = 0; | |
5312 | pSMB->Flags = 0; | |
5313 | pSMB->Timeout = 0; | |
5314 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5315 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5316 | - 4; | |
ac67055e JA |
5317 | offset = param_offset + params; |
5318 | ||
5319 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5320 | /* BB find exact max SMB PDU from sess structure BB */ |
5321 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5322 | pSMB->SetupCount = 1; |
5323 | pSMB->Reserved3 = 0; | |
5324 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5325 | byte_count = 1 /* pad */ + params + 12; | |
5326 | ||
5327 | pSMB->DataCount = cpu_to_le16(12); | |
5328 | pSMB->ParameterCount = cpu_to_le16(params); | |
5329 | pSMB->TotalDataCount = pSMB->DataCount; | |
5330 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5331 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5332 | pSMB->DataOffset = cpu_to_le16(offset); | |
5333 | ||
5334 | /* Params. */ | |
5335 | pSMB->FileNum = 0; | |
5336 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5337 | ||
5338 | /* Data. */ | |
5339 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5340 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5341 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5342 | ||
be8e3b00 | 5343 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5344 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5345 | ||
5346 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5347 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5348 | if (rc) { | |
f96637be | 5349 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5350 | } else { /* decode response */ |
5351 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5352 | if (rc) |
ac67055e | 5353 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5354 | } |
5355 | cifs_buf_release(pSMB); | |
5356 | ||
5357 | if (rc == -EAGAIN) | |
5358 | goto SETFSUnixRetry; | |
5359 | ||
5360 | return rc; | |
5361 | } | |
5362 | ||
5363 | ||
1da177e4 LT |
5364 | |
5365 | int | |
6d5786a3 | 5366 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5367 | struct kstatfs *FSData) |
1da177e4 LT |
5368 | { |
5369 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5370 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5371 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5372 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5373 | int rc = 0; | |
5374 | int bytes_returned = 0; | |
5375 | __u16 params, byte_count; | |
5376 | ||
f96637be | 5377 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5378 | QFSPosixRetry: |
5379 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5380 | (void **) &pSMBr); | |
5381 | if (rc) | |
5382 | return rc; | |
5383 | ||
5384 | params = 2; /* level */ | |
5385 | pSMB->TotalDataCount = 0; | |
5386 | pSMB->DataCount = 0; | |
5387 | pSMB->DataOffset = 0; | |
5388 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5389 | /* BB find exact max SMB PDU from sess structure BB */ |
5390 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5391 | pSMB->MaxSetupCount = 0; |
5392 | pSMB->Reserved = 0; | |
5393 | pSMB->Flags = 0; | |
5394 | pSMB->Timeout = 0; | |
5395 | pSMB->Reserved2 = 0; | |
5396 | byte_count = params + 1 /* pad */ ; | |
5397 | pSMB->ParameterCount = cpu_to_le16(params); | |
5398 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5399 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5400 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5401 | pSMB->SetupCount = 1; |
5402 | pSMB->Reserved3 = 0; | |
5403 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5404 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5405 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5406 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5407 | ||
5408 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5409 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5410 | if (rc) { | |
f96637be | 5411 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5412 | } else { /* decode response */ |
5413 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5414 | ||
820a803f | 5415 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5416 | rc = -EIO; /* bad smb */ |
5417 | } else { | |
5418 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5419 | response_data = | |
5420 | (FILE_SYSTEM_POSIX_INFO | |
5421 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5422 | data_offset); | |
5423 | FSData->f_bsize = | |
5424 | le32_to_cpu(response_data->BlockSize); | |
5425 | FSData->f_blocks = | |
5426 | le64_to_cpu(response_data->TotalBlocks); | |
5427 | FSData->f_bfree = | |
5428 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5429 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5430 | FSData->f_bavail = FSData->f_bfree; |
5431 | } else { | |
5432 | FSData->f_bavail = | |
50c2f753 | 5433 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5434 | } |
790fe579 | 5435 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5436 | FSData->f_files = |
50c2f753 | 5437 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5438 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5439 | FSData->f_ffree = |
50c2f753 | 5440 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5441 | } |
5442 | } | |
5443 | cifs_buf_release(pSMB); | |
5444 | ||
5445 | if (rc == -EAGAIN) | |
5446 | goto QFSPosixRetry; | |
5447 | ||
5448 | return rc; | |
5449 | } | |
5450 | ||
5451 | ||
d1433418 PS |
5452 | /* |
5453 | * We can not use write of zero bytes trick to set file size due to need for | |
5454 | * large file support. Also note that this SetPathInfo is preferred to | |
5455 | * SetFileInfo based method in next routine which is only needed to work around | |
5456 | * a sharing violation bugin Samba which this routine can run into. | |
5457 | */ | |
1da177e4 | 5458 | int |
6d5786a3 | 5459 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5460 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5461 | bool set_allocation) | |
1da177e4 LT |
5462 | { |
5463 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5464 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5465 | struct file_end_of_file_info *parm_data; | |
5466 | int name_len; | |
5467 | int rc = 0; | |
5468 | int bytes_returned = 0; | |
2baa2682 | 5469 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5470 | |
1da177e4 LT |
5471 | __u16 params, byte_count, data_count, param_offset, offset; |
5472 | ||
f96637be | 5473 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5474 | SetEOFRetry: |
5475 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5476 | (void **) &pSMBr); | |
5477 | if (rc) | |
5478 | return rc; | |
5479 | ||
5480 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5481 | name_len = | |
d1433418 PS |
5482 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5483 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5484 | name_len++; /* trailing null */ |
5485 | name_len *= 2; | |
3e87d803 | 5486 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5487 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5488 | name_len++; /* trailing null */ |
d1433418 | 5489 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5490 | } |
5491 | params = 6 + name_len; | |
26f57364 | 5492 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5493 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5494 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5495 | pSMB->MaxSetupCount = 0; |
5496 | pSMB->Reserved = 0; | |
5497 | pSMB->Flags = 0; | |
5498 | pSMB->Timeout = 0; | |
5499 | pSMB->Reserved2 = 0; | |
5500 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5501 | InformationLevel) - 4; |
1da177e4 | 5502 | offset = param_offset + params; |
d1433418 | 5503 | if (set_allocation) { |
50c2f753 SF |
5504 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5505 | pSMB->InformationLevel = | |
5506 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5507 | else | |
5508 | pSMB->InformationLevel = | |
5509 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5510 | } else /* Set File Size */ { | |
1da177e4 LT |
5511 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5512 | pSMB->InformationLevel = | |
50c2f753 | 5513 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5514 | else |
5515 | pSMB->InformationLevel = | |
50c2f753 | 5516 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5517 | } |
5518 | ||
5519 | parm_data = | |
5520 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5521 | offset); | |
5522 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5523 | pSMB->DataOffset = cpu_to_le16(offset); | |
5524 | pSMB->SetupCount = 1; | |
5525 | pSMB->Reserved3 = 0; | |
5526 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5527 | byte_count = 3 /* pad */ + params + data_count; | |
5528 | pSMB->DataCount = cpu_to_le16(data_count); | |
5529 | pSMB->TotalDataCount = pSMB->DataCount; | |
5530 | pSMB->ParameterCount = cpu_to_le16(params); | |
5531 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5532 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5533 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5534 | parm_data->FileSize = cpu_to_le64(size); |
5535 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5536 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5537 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5538 | if (rc) |
f96637be | 5539 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5540 | |
5541 | cifs_buf_release(pSMB); | |
5542 | ||
5543 | if (rc == -EAGAIN) | |
5544 | goto SetEOFRetry; | |
5545 | ||
5546 | return rc; | |
5547 | } | |
5548 | ||
5549 | int | |
d1433418 PS |
5550 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5551 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5552 | { |
5553 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5554 | struct file_end_of_file_info *parm_data; |
5555 | int rc = 0; | |
1da177e4 LT |
5556 | __u16 params, param_offset, offset, byte_count, count; |
5557 | ||
f96637be JP |
5558 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5559 | (long long)size); | |
cd63499c SF |
5560 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5561 | ||
1da177e4 LT |
5562 | if (rc) |
5563 | return rc; | |
5564 | ||
d1433418 PS |
5565 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5566 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5567 | |
1da177e4 LT |
5568 | params = 6; |
5569 | pSMB->MaxSetupCount = 0; | |
5570 | pSMB->Reserved = 0; | |
5571 | pSMB->Flags = 0; | |
5572 | pSMB->Timeout = 0; | |
5573 | pSMB->Reserved2 = 0; | |
5574 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5575 | offset = param_offset + params; | |
5576 | ||
1da177e4 LT |
5577 | count = sizeof(struct file_end_of_file_info); |
5578 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5579 | /* BB find exact max SMB PDU from sess structure BB */ |
5580 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5581 | pSMB->SetupCount = 1; |
5582 | pSMB->Reserved3 = 0; | |
5583 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5584 | byte_count = 3 /* pad */ + params + count; | |
5585 | pSMB->DataCount = cpu_to_le16(count); | |
5586 | pSMB->ParameterCount = cpu_to_le16(params); | |
5587 | pSMB->TotalDataCount = pSMB->DataCount; | |
5588 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5589 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5590 | parm_data = | |
50c2f753 SF |
5591 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5592 | + offset); | |
1da177e4 LT |
5593 | pSMB->DataOffset = cpu_to_le16(offset); |
5594 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5595 | pSMB->Fid = cfile->fid.netfid; |
5596 | if (set_allocation) { | |
1da177e4 LT |
5597 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5598 | pSMB->InformationLevel = | |
5599 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5600 | else | |
5601 | pSMB->InformationLevel = | |
5602 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5603 | } else /* Set File Size */ { |
1da177e4 LT |
5604 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5605 | pSMB->InformationLevel = | |
50c2f753 | 5606 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5607 | else |
5608 | pSMB->InformationLevel = | |
50c2f753 | 5609 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5610 | } |
5611 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5612 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5613 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5614 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5615 | cifs_small_buf_release(pSMB); |
1da177e4 | 5616 | if (rc) { |
f96637be JP |
5617 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5618 | rc); | |
1da177e4 LT |
5619 | } |
5620 | ||
50c2f753 | 5621 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5622 | since file handle passed in no longer valid */ |
5623 | ||
5624 | return rc; | |
5625 | } | |
5626 | ||
50c2f753 | 5627 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5628 | an open handle, rather than by pathname - this is awkward due to |
5629 | potential access conflicts on the open, but it is unavoidable for these | |
5630 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5631 | time and resort to the original setpathinfo level which takes the ancient | |
5632 | DOS time format with 2 second granularity */ | |
5633 | int | |
6d5786a3 | 5634 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5635 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5636 | { |
5637 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5638 | char *data_offset; |
5639 | int rc = 0; | |
1da177e4 LT |
5640 | __u16 params, param_offset, offset, byte_count, count; |
5641 | ||
f96637be | 5642 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5643 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5644 | ||
1da177e4 LT |
5645 | if (rc) |
5646 | return rc; | |
5647 | ||
2dd2dfa0 JL |
5648 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5649 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5650 | |
1da177e4 LT |
5651 | params = 6; |
5652 | pSMB->MaxSetupCount = 0; | |
5653 | pSMB->Reserved = 0; | |
5654 | pSMB->Flags = 0; | |
5655 | pSMB->Timeout = 0; | |
5656 | pSMB->Reserved2 = 0; | |
5657 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5658 | offset = param_offset + params; | |
5659 | ||
b2a3ad9c JL |
5660 | data_offset = (char *)pSMB + |
5661 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5662 | |
26f57364 | 5663 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5664 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5665 | /* BB find max SMB PDU from sess */ |
5666 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5667 | pSMB->SetupCount = 1; |
5668 | pSMB->Reserved3 = 0; | |
5669 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5670 | byte_count = 3 /* pad */ + params + count; | |
5671 | pSMB->DataCount = cpu_to_le16(count); | |
5672 | pSMB->ParameterCount = cpu_to_le16(params); | |
5673 | pSMB->TotalDataCount = pSMB->DataCount; | |
5674 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5675 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5676 | pSMB->DataOffset = cpu_to_le16(offset); | |
5677 | pSMB->Fid = fid; | |
5678 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5679 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5680 | else | |
5681 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5682 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5683 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5684 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5685 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5686 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5687 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5688 | if (rc) |
f96637be JP |
5689 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5690 | rc); | |
1da177e4 | 5691 | |
50c2f753 | 5692 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5693 | since file handle passed in no longer valid */ |
5694 | ||
5695 | return rc; | |
5696 | } | |
5697 | ||
6d22f098 | 5698 | int |
6d5786a3 | 5699 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5700 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5701 | { | |
5702 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5703 | char *data_offset; | |
5704 | int rc = 0; | |
5705 | __u16 params, param_offset, offset, byte_count, count; | |
5706 | ||
f96637be | 5707 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5708 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5709 | ||
5710 | if (rc) | |
5711 | return rc; | |
5712 | ||
5713 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5714 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5715 | ||
5716 | params = 6; | |
5717 | pSMB->MaxSetupCount = 0; | |
5718 | pSMB->Reserved = 0; | |
5719 | pSMB->Flags = 0; | |
5720 | pSMB->Timeout = 0; | |
5721 | pSMB->Reserved2 = 0; | |
5722 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5723 | offset = param_offset + params; | |
5724 | ||
5725 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5726 | ||
5727 | count = 1; | |
5728 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5729 | /* BB find max SMB PDU from sess */ | |
5730 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5731 | pSMB->SetupCount = 1; | |
5732 | pSMB->Reserved3 = 0; | |
5733 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5734 | byte_count = 3 /* pad */ + params + count; | |
5735 | pSMB->DataCount = cpu_to_le16(count); | |
5736 | pSMB->ParameterCount = cpu_to_le16(params); | |
5737 | pSMB->TotalDataCount = pSMB->DataCount; | |
5738 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5739 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5740 | pSMB->DataOffset = cpu_to_le16(offset); | |
5741 | pSMB->Fid = fid; | |
5742 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5743 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5744 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5745 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5746 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5747 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5748 | cifs_small_buf_release(pSMB); |
6d22f098 | 5749 | if (rc) |
f96637be | 5750 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5751 | |
5752 | return rc; | |
5753 | } | |
1da177e4 LT |
5754 | |
5755 | int | |
6d5786a3 | 5756 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5757 | const char *fileName, const FILE_BASIC_INFO *data, |
5758 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5759 | { |
5760 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5761 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5762 | int name_len; | |
5763 | int rc = 0; | |
5764 | int bytes_returned = 0; | |
5765 | char *data_offset; | |
5766 | __u16 params, param_offset, offset, byte_count, count; | |
5767 | ||
f96637be | 5768 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5769 | |
5770 | SetTimesRetry: | |
5771 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5772 | (void **) &pSMBr); | |
5773 | if (rc) | |
5774 | return rc; | |
5775 | ||
5776 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5777 | name_len = | |
acbbb76a SF |
5778 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5779 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5780 | name_len++; /* trailing null */ |
5781 | name_len *= 2; | |
50c2f753 | 5782 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5783 | name_len = strnlen(fileName, PATH_MAX); |
5784 | name_len++; /* trailing null */ | |
5785 | strncpy(pSMB->FileName, fileName, name_len); | |
5786 | } | |
5787 | ||
5788 | params = 6 + name_len; | |
26f57364 | 5789 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5790 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5791 | /* BB find max SMB PDU from sess structure BB */ |
5792 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5793 | pSMB->MaxSetupCount = 0; |
5794 | pSMB->Reserved = 0; | |
5795 | pSMB->Flags = 0; | |
5796 | pSMB->Timeout = 0; | |
5797 | pSMB->Reserved2 = 0; | |
5798 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5799 | InformationLevel) - 4; |
1da177e4 LT |
5800 | offset = param_offset + params; |
5801 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5802 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5803 | pSMB->DataOffset = cpu_to_le16(offset); | |
5804 | pSMB->SetupCount = 1; | |
5805 | pSMB->Reserved3 = 0; | |
5806 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5807 | byte_count = 3 /* pad */ + params + count; | |
5808 | ||
5809 | pSMB->DataCount = cpu_to_le16(count); | |
5810 | pSMB->ParameterCount = cpu_to_le16(params); | |
5811 | pSMB->TotalDataCount = pSMB->DataCount; | |
5812 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5813 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5814 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5815 | else | |
5816 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5817 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5818 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5819 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5820 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5821 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5822 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5823 | if (rc) |
f96637be | 5824 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5825 | |
5826 | cifs_buf_release(pSMB); | |
5827 | ||
5828 | if (rc == -EAGAIN) | |
5829 | goto SetTimesRetry; | |
5830 | ||
5831 | return rc; | |
5832 | } | |
5833 | ||
5834 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5835 | /* Can be used to set attributes */ | |
5836 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5837 | handling it anyway and NT4 was what we thought it would be needed for | |
5838 | Do not delete it until we prove whether needed for Win9x though */ | |
5839 | int | |
6d5786a3 | 5840 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5841 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5842 | { | |
5843 | SETATTR_REQ *pSMB = NULL; | |
5844 | SETATTR_RSP *pSMBr = NULL; | |
5845 | int rc = 0; | |
5846 | int bytes_returned; | |
5847 | int name_len; | |
5848 | ||
f96637be | 5849 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5850 | |
5851 | SetAttrLgcyRetry: | |
5852 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5853 | (void **) &pSMBr); | |
5854 | if (rc) | |
5855 | return rc; | |
5856 | ||
5857 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5858 | name_len = | |
acbbb76a SF |
5859 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5860 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5861 | name_len++; /* trailing null */ |
5862 | name_len *= 2; | |
50c2f753 | 5863 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5864 | name_len = strnlen(fileName, PATH_MAX); |
5865 | name_len++; /* trailing null */ | |
5866 | strncpy(pSMB->fileName, fileName, name_len); | |
5867 | } | |
5868 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5869 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5870 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5871 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5872 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5873 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5874 | if (rc) |
f96637be | 5875 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5876 | |
5877 | cifs_buf_release(pSMB); | |
5878 | ||
5879 | if (rc == -EAGAIN) | |
5880 | goto SetAttrLgcyRetry; | |
5881 | ||
5882 | return rc; | |
5883 | } | |
5884 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5885 | ||
654cf14a JL |
5886 | static void |
5887 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5888 | const struct cifs_unix_set_info_args *args) | |
5889 | { | |
49418b2c | 5890 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5891 | u64 mode = args->mode; |
5892 | ||
49418b2c EB |
5893 | if (uid_valid(args->uid)) |
5894 | uid = from_kuid(&init_user_ns, args->uid); | |
5895 | if (gid_valid(args->gid)) | |
5896 | gid = from_kgid(&init_user_ns, args->gid); | |
5897 | ||
654cf14a JL |
5898 | /* |
5899 | * Samba server ignores set of file size to zero due to bugs in some | |
5900 | * older clients, but we should be precise - we use SetFileSize to | |
5901 | * set file size and do not want to truncate file size to zero | |
25985edc | 5902 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5903 | * zero instead of -1 here |
5904 | */ | |
5905 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5906 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5907 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5908 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5909 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5910 | data_offset->Uid = cpu_to_le64(uid); |
5911 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5912 | /* better to leave device as zero when it is */ |
5913 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5914 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5915 | data_offset->Permissions = cpu_to_le64(mode); | |
5916 | ||
5917 | if (S_ISREG(mode)) | |
5918 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5919 | else if (S_ISDIR(mode)) | |
5920 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5921 | else if (S_ISLNK(mode)) | |
5922 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5923 | else if (S_ISCHR(mode)) | |
5924 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5925 | else if (S_ISBLK(mode)) | |
5926 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5927 | else if (S_ISFIFO(mode)) | |
5928 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5929 | else if (S_ISSOCK(mode)) | |
5930 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5931 | } | |
5932 | ||
3bbeeb3c | 5933 | int |
6d5786a3 | 5934 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5935 | const struct cifs_unix_set_info_args *args, |
5936 | u16 fid, u32 pid_of_opener) | |
5937 | { | |
5938 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5939 | char *data_offset; |
3bbeeb3c JL |
5940 | int rc = 0; |
5941 | u16 params, param_offset, offset, byte_count, count; | |
5942 | ||
f96637be | 5943 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5944 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5945 | ||
5946 | if (rc) | |
5947 | return rc; | |
5948 | ||
5949 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5950 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5951 | ||
5952 | params = 6; | |
5953 | pSMB->MaxSetupCount = 0; | |
5954 | pSMB->Reserved = 0; | |
5955 | pSMB->Flags = 0; | |
5956 | pSMB->Timeout = 0; | |
5957 | pSMB->Reserved2 = 0; | |
5958 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5959 | offset = param_offset + params; | |
5960 | ||
b2a3ad9c JL |
5961 | data_offset = (char *)pSMB + |
5962 | offsetof(struct smb_hdr, Protocol) + offset; | |
5963 | ||
3bbeeb3c JL |
5964 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5965 | ||
5966 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5967 | /* BB find max SMB PDU from sess */ | |
5968 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5969 | pSMB->SetupCount = 1; | |
5970 | pSMB->Reserved3 = 0; | |
5971 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5972 | byte_count = 3 /* pad */ + params + count; | |
5973 | pSMB->DataCount = cpu_to_le16(count); | |
5974 | pSMB->ParameterCount = cpu_to_le16(params); | |
5975 | pSMB->TotalDataCount = pSMB->DataCount; | |
5976 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5977 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5978 | pSMB->DataOffset = cpu_to_le16(offset); | |
5979 | pSMB->Fid = fid; | |
5980 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5981 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5982 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5983 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5984 | ||
b2a3ad9c | 5985 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5986 | |
792af7b0 | 5987 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5988 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 5989 | if (rc) |
f96637be JP |
5990 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5991 | rc); | |
3bbeeb3c JL |
5992 | |
5993 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5994 | since file handle passed in no longer valid */ | |
5995 | ||
5996 | return rc; | |
5997 | } | |
5998 | ||
1da177e4 | 5999 | int |
6d5786a3 | 6000 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6001 | const char *file_name, |
01ea95e3 JL |
6002 | const struct cifs_unix_set_info_args *args, |
6003 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6004 | { |
6005 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6006 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6007 | int name_len; | |
6008 | int rc = 0; | |
6009 | int bytes_returned = 0; | |
6010 | FILE_UNIX_BASIC_INFO *data_offset; | |
6011 | __u16 params, param_offset, offset, count, byte_count; | |
6012 | ||
f96637be | 6013 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6014 | setPermsRetry: |
6015 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6016 | (void **) &pSMBr); | |
6017 | if (rc) | |
6018 | return rc; | |
6019 | ||
6020 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6021 | name_len = | |
ff691e96 | 6022 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6023 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6024 | name_len++; /* trailing null */ |
6025 | name_len *= 2; | |
3e87d803 | 6026 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 6027 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 6028 | name_len++; /* trailing null */ |
ff691e96 | 6029 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
6030 | } |
6031 | ||
6032 | params = 6 + name_len; | |
26f57364 | 6033 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6034 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6035 | /* BB find max SMB PDU from sess structure BB */ |
6036 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6037 | pSMB->MaxSetupCount = 0; |
6038 | pSMB->Reserved = 0; | |
6039 | pSMB->Flags = 0; | |
6040 | pSMB->Timeout = 0; | |
6041 | pSMB->Reserved2 = 0; | |
6042 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6043 | InformationLevel) - 4; |
1da177e4 LT |
6044 | offset = param_offset + params; |
6045 | data_offset = | |
6046 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6047 | offset); | |
6048 | memset(data_offset, 0, count); | |
6049 | pSMB->DataOffset = cpu_to_le16(offset); | |
6050 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6051 | pSMB->SetupCount = 1; | |
6052 | pSMB->Reserved3 = 0; | |
6053 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6054 | byte_count = 3 /* pad */ + params + count; | |
6055 | pSMB->ParameterCount = cpu_to_le16(params); | |
6056 | pSMB->DataCount = cpu_to_le16(count); | |
6057 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6058 | pSMB->TotalDataCount = pSMB->DataCount; | |
6059 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6060 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6061 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6062 | |
654cf14a | 6063 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6064 | |
6065 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6066 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6067 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6068 | if (rc) |
f96637be | 6069 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6070 | |
0d817bc0 | 6071 | cifs_buf_release(pSMB); |
1da177e4 LT |
6072 | if (rc == -EAGAIN) |
6073 | goto setPermsRetry; | |
6074 | return rc; | |
6075 | } | |
6076 | ||
1da177e4 | 6077 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6078 | /* |
6079 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6080 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6081 | * it looks for that attribute name and stuffs that value into the EAData | |
6082 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6083 | * buffer. In both cases, the return value is either the length of the | |
6084 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6085 | * the data isn't copied to it, but the length is returned. | |
6086 | */ | |
1da177e4 | 6087 | ssize_t |
6d5786a3 | 6088 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6089 | const unsigned char *searchName, const unsigned char *ea_name, |
6090 | char *EAData, size_t buf_size, | |
67b4c889 | 6091 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6092 | { |
6093 | /* BB assumes one setup word */ | |
6094 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6095 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
6096 | int remap = cifs_remap(cifs_sb); |
6097 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
6098 | int rc = 0; |
6099 | int bytes_returned; | |
6e462b9f | 6100 | int list_len; |
f0d3868b | 6101 | struct fealist *ea_response_data; |
50c2f753 SF |
6102 | struct fea *temp_fea; |
6103 | char *temp_ptr; | |
0cd126b5 | 6104 | char *end_of_smb; |
f0d3868b | 6105 | __u16 params, byte_count, data_offset; |
5980fc96 | 6106 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6107 | |
f96637be | 6108 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6109 | QAllEAsRetry: |
6110 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6111 | (void **) &pSMBr); | |
6112 | if (rc) | |
6113 | return rc; | |
6114 | ||
6115 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6116 | list_len = |
acbbb76a SF |
6117 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6118 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6119 | list_len++; /* trailing null */ |
6120 | list_len *= 2; | |
1da177e4 | 6121 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6122 | list_len = strnlen(searchName, PATH_MAX); |
6123 | list_len++; /* trailing null */ | |
6124 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6125 | } |
6126 | ||
6e462b9f | 6127 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6128 | pSMB->TotalDataCount = 0; |
6129 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6130 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6131 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6132 | pSMB->MaxSetupCount = 0; |
6133 | pSMB->Reserved = 0; | |
6134 | pSMB->Flags = 0; | |
6135 | pSMB->Timeout = 0; | |
6136 | pSMB->Reserved2 = 0; | |
6137 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6138 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6139 | pSMB->DataCount = 0; |
6140 | pSMB->DataOffset = 0; | |
6141 | pSMB->SetupCount = 1; | |
6142 | pSMB->Reserved3 = 0; | |
6143 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6144 | byte_count = params + 1 /* pad */ ; | |
6145 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6146 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6147 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6148 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6149 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6150 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6151 | ||
6152 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6153 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6154 | if (rc) { | |
f96637be | 6155 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6156 | goto QAllEAsOut; |
6157 | } | |
1da177e4 | 6158 | |
f0d3868b JL |
6159 | |
6160 | /* BB also check enough total bytes returned */ | |
6161 | /* BB we need to improve the validity checking | |
6162 | of these trans2 responses */ | |
6163 | ||
6164 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6165 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6166 | rc = -EIO; /* bad smb */ |
6167 | goto QAllEAsOut; | |
6168 | } | |
6169 | ||
6170 | /* check that length of list is not more than bcc */ | |
6171 | /* check that each entry does not go beyond length | |
6172 | of list */ | |
6173 | /* check that each element of each entry does not | |
6174 | go beyond end of list */ | |
6175 | /* validate_trans2_offsets() */ | |
6176 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6177 | ||
6178 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6179 | ea_response_data = (struct fealist *) | |
6180 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6181 | ||
6e462b9f | 6182 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6183 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6184 | if (list_len <= 8) { |
f96637be | 6185 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6186 | /* didn't find the named attribute */ |
6187 | if (ea_name) | |
6188 | rc = -ENODATA; | |
f0d3868b JL |
6189 | goto QAllEAsOut; |
6190 | } | |
6191 | ||
0cd126b5 | 6192 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6193 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6194 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6195 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6196 | rc = -EIO; |
6197 | goto QAllEAsOut; | |
6198 | } | |
6199 | ||
f0d3868b | 6200 | /* account for ea list len */ |
6e462b9f | 6201 | list_len -= 4; |
f0d3868b JL |
6202 | temp_fea = ea_response_data->list; |
6203 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6204 | while (list_len > 0) { |
122ca007 | 6205 | unsigned int name_len; |
f0d3868b | 6206 | __u16 value_len; |
0cd126b5 | 6207 | |
6e462b9f | 6208 | list_len -= 4; |
f0d3868b | 6209 | temp_ptr += 4; |
0cd126b5 JL |
6210 | /* make sure we can read name_len and value_len */ |
6211 | if (list_len < 0) { | |
f96637be | 6212 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6213 | rc = -EIO; |
6214 | goto QAllEAsOut; | |
6215 | } | |
6216 | ||
6217 | name_len = temp_fea->name_len; | |
6218 | value_len = le16_to_cpu(temp_fea->value_len); | |
6219 | list_len -= name_len + 1 + value_len; | |
6220 | if (list_len < 0) { | |
f96637be | 6221 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6222 | rc = -EIO; |
6223 | goto QAllEAsOut; | |
6224 | } | |
6225 | ||
31c0519f | 6226 | if (ea_name) { |
91d065c4 | 6227 | if (ea_name_len == name_len && |
ac423446 | 6228 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6229 | temp_ptr += name_len + 1; |
6230 | rc = value_len; | |
6231 | if (buf_size == 0) | |
6232 | goto QAllEAsOut; | |
6233 | if ((size_t)value_len > buf_size) { | |
6234 | rc = -ERANGE; | |
6235 | goto QAllEAsOut; | |
6236 | } | |
6237 | memcpy(EAData, temp_ptr, value_len); | |
6238 | goto QAllEAsOut; | |
6239 | } | |
f0d3868b | 6240 | } else { |
31c0519f JL |
6241 | /* account for prefix user. and trailing null */ |
6242 | rc += (5 + 1 + name_len); | |
6243 | if (rc < (int) buf_size) { | |
6244 | memcpy(EAData, "user.", 5); | |
6245 | EAData += 5; | |
6246 | memcpy(EAData, temp_ptr, name_len); | |
6247 | EAData += name_len; | |
6248 | /* null terminate name */ | |
6249 | *EAData = 0; | |
6250 | ++EAData; | |
6251 | } else if (buf_size == 0) { | |
6252 | /* skip copy - calc size only */ | |
6253 | } else { | |
6254 | /* stop before overrun buffer */ | |
6255 | rc = -ERANGE; | |
6256 | break; | |
6257 | } | |
1da177e4 | 6258 | } |
0cd126b5 | 6259 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6260 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6261 | } |
f0d3868b | 6262 | |
31c0519f JL |
6263 | /* didn't find the named attribute */ |
6264 | if (ea_name) | |
6265 | rc = -ENODATA; | |
6266 | ||
f0d3868b | 6267 | QAllEAsOut: |
0d817bc0 | 6268 | cifs_buf_release(pSMB); |
1da177e4 LT |
6269 | if (rc == -EAGAIN) |
6270 | goto QAllEAsRetry; | |
6271 | ||
6272 | return (ssize_t)rc; | |
6273 | } | |
6274 | ||
1da177e4 | 6275 | int |
6d5786a3 PS |
6276 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6277 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 6278 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 6279 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6280 | { |
6281 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6282 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6283 | struct fealist *parm_data; | |
6284 | int name_len; | |
6285 | int rc = 0; | |
6286 | int bytes_returned = 0; | |
6287 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 6288 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 6289 | |
f96637be | 6290 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6291 | SetEARetry: |
6292 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6293 | (void **) &pSMBr); | |
6294 | if (rc) | |
6295 | return rc; | |
6296 | ||
6297 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6298 | name_len = | |
acbbb76a SF |
6299 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6300 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6301 | name_len++; /* trailing null */ |
6302 | name_len *= 2; | |
50c2f753 | 6303 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6304 | name_len = strnlen(fileName, PATH_MAX); |
6305 | name_len++; /* trailing null */ | |
6306 | strncpy(pSMB->FileName, fileName, name_len); | |
6307 | } | |
6308 | ||
6309 | params = 6 + name_len; | |
6310 | ||
6311 | /* done calculating parms using name_len of file name, | |
6312 | now use name_len to calculate length of ea name | |
6313 | we are going to create in the inode xattrs */ | |
790fe579 | 6314 | if (ea_name == NULL) |
1da177e4 LT |
6315 | name_len = 0; |
6316 | else | |
50c2f753 | 6317 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6318 | |
dae5dbdb | 6319 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6320 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6321 | /* BB find max SMB PDU from sess */ |
6322 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6323 | pSMB->MaxSetupCount = 0; |
6324 | pSMB->Reserved = 0; | |
6325 | pSMB->Flags = 0; | |
6326 | pSMB->Timeout = 0; | |
6327 | pSMB->Reserved2 = 0; | |
6328 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6329 | InformationLevel) - 4; |
1da177e4 LT |
6330 | offset = param_offset + params; |
6331 | pSMB->InformationLevel = | |
6332 | cpu_to_le16(SMB_SET_FILE_EA); | |
6333 | ||
6334 | parm_data = | |
6335 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6336 | offset); | |
6337 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6338 | pSMB->DataOffset = cpu_to_le16(offset); | |
6339 | pSMB->SetupCount = 1; | |
6340 | pSMB->Reserved3 = 0; | |
6341 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6342 | byte_count = 3 /* pad */ + params + count; | |
6343 | pSMB->DataCount = cpu_to_le16(count); | |
6344 | parm_data->list_len = cpu_to_le32(count); | |
6345 | parm_data->list[0].EA_flags = 0; | |
6346 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6347 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6348 | /* EA names are always ASCII */ |
790fe579 | 6349 | if (ea_name) |
50c2f753 | 6350 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6351 | parm_data->list[0].name[name_len] = 0; |
6352 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6353 | /* caller ensures that ea_value_len is less than 64K but | |
6354 | we need to ensure that it fits within the smb */ | |
6355 | ||
50c2f753 SF |
6356 | /*BB add length check to see if it would fit in |
6357 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6358 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6359 | if (ea_value_len) | |
50c2f753 SF |
6360 | memcpy(parm_data->list[0].name+name_len+1, |
6361 | ea_value, ea_value_len); | |
1da177e4 LT |
6362 | |
6363 | pSMB->TotalDataCount = pSMB->DataCount; | |
6364 | pSMB->ParameterCount = cpu_to_le16(params); | |
6365 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6366 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6367 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6368 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6369 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6370 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6371 | if (rc) |
f96637be | 6372 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6373 | |
6374 | cifs_buf_release(pSMB); | |
6375 | ||
6376 | if (rc == -EAGAIN) | |
6377 | goto SetEARetry; | |
6378 | ||
6379 | return rc; | |
6380 | } | |
1da177e4 | 6381 | #endif |
0eff0e26 SF |
6382 | |
6383 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6384 | /* | |
6385 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6386 | * to allow network clients (such as Windows) to display updated | |
6387 | * lists of files in directory listings automatically when | |
6388 | * files are added by one user when another user has the | |
6389 | * same directory open on their desktop. The Linux cifs kernel | |
6390 | * client hooked into the kernel side of this interface for | |
6391 | * the same reason, but ironically when the VFS moved from | |
6392 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6393 | * network file system clients (the most obvious use case | |
6394 | * for notify interfaces is when multiple users can update | |
6395 | * the contents of the same directory - exactly what network | |
6396 | * file systems can do) although the server (Samba) could | |
6397 | * still use it. For the short term we leave the worker | |
6398 | * function ifdeffed out (below) until inotify is fixed | |
6399 | * in the VFS to make it easier to plug in network file | |
6400 | * system clients. If inotify turns out to be permanently | |
6401 | * incompatible for network fs clients, we could instead simply | |
6402 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6403 | */ | |
6d5786a3 | 6404 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6405 | const int notify_subdirs, const __u16 netfid, |
6406 | __u32 filter, struct file *pfile, int multishot, | |
6407 | const struct nls_table *nls_codepage) | |
6408 | { | |
6409 | int rc = 0; | |
6410 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6411 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6412 | struct dir_notify_req *dnotify_req; | |
6413 | int bytes_returned; | |
6414 | ||
f96637be | 6415 | cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid); |
0eff0e26 SF |
6416 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
6417 | (void **) &pSMBr); | |
6418 | if (rc) | |
6419 | return rc; | |
6420 | ||
6421 | pSMB->TotalParameterCount = 0 ; | |
6422 | pSMB->TotalDataCount = 0; | |
6423 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6424 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6425 | pSMB->MaxSetupCount = 4; |
6426 | pSMB->Reserved = 0; | |
6427 | pSMB->ParameterOffset = 0; | |
6428 | pSMB->DataCount = 0; | |
6429 | pSMB->DataOffset = 0; | |
6430 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6431 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6432 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6433 | if (notify_subdirs) | |
6434 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6435 | pSMB->Reserved2 = 0; | |
6436 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6437 | pSMB->Fid = netfid; /* file handle always le */ | |
6438 | pSMB->ByteCount = 0; | |
6439 | ||
6440 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6441 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6442 | CIFS_ASYNC_OP); | |
6443 | if (rc) { | |
f96637be | 6444 | cifs_dbg(FYI, "Error in Notify = %d\n", rc); |
0eff0e26 SF |
6445 | } else { |
6446 | /* Add file to outstanding requests */ | |
6447 | /* BB change to kmem cache alloc */ | |
6448 | dnotify_req = kmalloc( | |
6449 | sizeof(struct dir_notify_req), | |
6450 | GFP_KERNEL); | |
6451 | if (dnotify_req) { | |
6452 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6453 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6454 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6455 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6456 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6457 | dnotify_req->netfid = netfid; | |
6458 | dnotify_req->pfile = pfile; | |
6459 | dnotify_req->filter = filter; | |
6460 | dnotify_req->multishot = multishot; | |
6461 | spin_lock(&GlobalMid_Lock); | |
6462 | list_add_tail(&dnotify_req->lhead, | |
6463 | &GlobalDnotifyReqList); | |
6464 | spin_unlock(&GlobalMid_Lock); | |
6465 | } else | |
6466 | rc = -ENOMEM; | |
6467 | } | |
6468 | cifs_buf_release(pSMB); | |
6469 | return rc; | |
6470 | } | |
6471 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |