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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" | |
d9191319 | 45 | #include "smb2proto.h" |
e28bc5b1 | 46 | #include "fscache.h" |
db223a59 | 47 | #include "smbdirect.h" |
08744015 PA |
48 | #ifdef CONFIG_CIFS_DFS_UPCALL |
49 | #include "dfs_cache.h" | |
50 | #endif | |
1da177e4 LT |
51 | |
52 | #ifdef CONFIG_CIFS_POSIX | |
53 | static struct { | |
54 | int index; | |
55 | char *name; | |
56 | } protocols[] = { | |
3979877e SF |
57 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
58 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 59 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 60 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 61 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 62 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
63 | {BAD_PROT, "\2"} |
64 | }; | |
65 | #else | |
66 | static struct { | |
67 | int index; | |
68 | char *name; | |
69 | } protocols[] = { | |
3979877e SF |
70 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
71 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 72 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 73 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 74 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
75 | {BAD_PROT, "\2"} |
76 | }; | |
77 | #endif | |
78 | ||
3979877e SF |
79 | /* define the number of elements in the cifs dialect array */ |
80 | #ifdef CONFIG_CIFS_POSIX | |
81 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 82 | #define CIFS_NUM_PROT 4 |
3979877e SF |
83 | #else |
84 | #define CIFS_NUM_PROT 2 | |
85 | #endif /* CIFS_WEAK_PW_HASH */ | |
86 | #else /* not posix */ | |
87 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 88 | #define CIFS_NUM_PROT 3 |
3979877e SF |
89 | #else |
90 | #define CIFS_NUM_PROT 1 | |
91 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
92 | #endif /* CIFS_POSIX */ | |
93 | ||
aa24d1e9 PS |
94 | /* |
95 | * Mark as invalid, all open files on tree connections since they | |
96 | * were closed when session to server was lost. | |
97 | */ | |
98 | void | |
99 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
100 | { |
101 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
102 | struct list_head *tmp; |
103 | struct list_head *tmp1; | |
1da177e4 | 104 | |
aa24d1e9 | 105 | /* list all files open on tree connection and mark them invalid */ |
3afca265 | 106 | spin_lock(&tcon->open_file_lock); |
aa24d1e9 | 107 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 108 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 109 | open_file->invalidHandle = true; |
3bc303c2 | 110 | open_file->oplock_break_cancelled = true; |
1da177e4 | 111 | } |
3afca265 | 112 | spin_unlock(&tcon->open_file_lock); |
3d4ef9a1 | 113 | |
a93864d9 RS |
114 | mutex_lock(&tcon->crfid.fid_mutex); |
115 | tcon->crfid.is_valid = false; | |
d9191319 PS |
116 | /* cached handle is not valid, so SMB2_CLOSE won't be sent below */ |
117 | close_shroot_lease_locked(&tcon->crfid); | |
a93864d9 RS |
118 | memset(tcon->crfid.fid, 0, sizeof(struct cifs_fid)); |
119 | mutex_unlock(&tcon->crfid.fid_mutex); | |
3d4ef9a1 | 120 | |
aa24d1e9 PS |
121 | /* |
122 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
123 | * to this tcon. | |
124 | */ | |
1da177e4 LT |
125 | } |
126 | ||
9162ab20 JL |
127 | /* reconnect the socket, tcon, and smb session if needed */ |
128 | static int | |
96daf2b0 | 129 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 130 | { |
c4a5534a | 131 | int rc; |
96daf2b0 | 132 | struct cifs_ses *ses; |
9162ab20 JL |
133 | struct TCP_Server_Info *server; |
134 | struct nls_table *nls_codepage; | |
08744015 | 135 | int retries; |
9162ab20 JL |
136 | |
137 | /* | |
138 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
139 | * tcp and smb session status done differently for those three - in the | |
140 | * calling routine | |
141 | */ | |
142 | if (!tcon) | |
143 | return 0; | |
144 | ||
145 | ses = tcon->ses; | |
146 | server = ses->server; | |
147 | ||
148 | /* | |
149 | * only tree disconnect, open, and write, (and ulogoff which does not | |
150 | * have tcon) are allowed as we start force umount | |
151 | */ | |
152 | if (tcon->tidStatus == CifsExiting) { | |
153 | if (smb_command != SMB_COM_WRITE_ANDX && | |
154 | smb_command != SMB_COM_OPEN_ANDX && | |
155 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
f96637be JP |
156 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
157 | smb_command); | |
9162ab20 JL |
158 | return -ENODEV; |
159 | } | |
160 | } | |
161 | ||
08744015 PA |
162 | retries = server->nr_targets; |
163 | ||
9162ab20 | 164 | /* |
08744015 PA |
165 | * Give demultiplex thread up to 10 seconds to each target available for |
166 | * reconnect -- should be greater than cifs socket timeout which is 7 | |
167 | * seconds. | |
9162ab20 JL |
168 | */ |
169 | while (server->tcpStatus == CifsNeedReconnect) { | |
7ffbe655 PA |
170 | rc = wait_event_interruptible_timeout(server->response_q, |
171 | (server->tcpStatus != CifsNeedReconnect), | |
172 | 10 * HZ); | |
173 | if (rc < 0) { | |
a0a3036b JP |
174 | cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n", |
175 | __func__); | |
7ffbe655 PA |
176 | return -ERESTARTSYS; |
177 | } | |
9162ab20 | 178 | |
fd88ce93 | 179 | /* are we still trying to reconnect? */ |
9162ab20 JL |
180 | if (server->tcpStatus != CifsNeedReconnect) |
181 | break; | |
182 | ||
09c40b15 | 183 | if (retries && --retries) |
08744015 PA |
184 | continue; |
185 | ||
9162ab20 JL |
186 | /* |
187 | * on "soft" mounts we wait once. Hard mounts keep | |
188 | * retrying until process is killed or server comes | |
189 | * back on-line | |
190 | */ | |
d402539b | 191 | if (!tcon->retry) { |
f96637be | 192 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
193 | return -EHOSTDOWN; |
194 | } | |
08744015 | 195 | retries = server->nr_targets; |
9162ab20 JL |
196 | } |
197 | ||
198 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
199 | return 0; | |
200 | ||
201 | nls_codepage = load_nls_default(); | |
202 | ||
203 | /* | |
204 | * need to prevent multiple threads trying to simultaneously | |
205 | * reconnect the same SMB session | |
206 | */ | |
d7b619cf | 207 | mutex_lock(&ses->session_mutex); |
76e75270 SC |
208 | |
209 | /* | |
210 | * Recheck after acquire mutex. If another thread is negotiating | |
211 | * and the server never sends an answer the socket will be closed | |
212 | * and tcpStatus set to reconnect. | |
213 | */ | |
214 | if (server->tcpStatus == CifsNeedReconnect) { | |
215 | rc = -EHOSTDOWN; | |
216 | mutex_unlock(&ses->session_mutex); | |
217 | goto out; | |
218 | } | |
219 | ||
198b5682 JL |
220 | rc = cifs_negotiate_protocol(0, ses); |
221 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
222 | rc = cifs_setup_session(0, ses, nls_codepage); |
223 | ||
224 | /* do we need to reconnect tcon? */ | |
225 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 226 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
227 | goto out; |
228 | } | |
229 | ||
aa24d1e9 | 230 | cifs_mark_open_files_invalid(tcon); |
565674d6 | 231 | rc = cifs_tree_connect(0, tcon, nls_codepage); |
d7b619cf | 232 | mutex_unlock(&ses->session_mutex); |
f96637be | 233 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 234 | |
c318e6c2 | 235 | if (rc) { |
a0a3036b | 236 | pr_warn_once("reconnect tcon failed rc = %d\n", rc); |
9162ab20 | 237 | goto out; |
c318e6c2 | 238 | } |
9162ab20 | 239 | |
9162ab20 JL |
240 | atomic_inc(&tconInfoReconnectCount); |
241 | ||
242 | /* tell server Unix caps we support */ | |
864138cb | 243 | if (cap_unix(ses)) |
9162ab20 JL |
244 | reset_cifs_unix_caps(0, tcon, NULL, NULL); |
245 | ||
246 | /* | |
247 | * Removed call to reopen open files here. It is safer (and faster) to | |
248 | * reopen files one at a time as needed in read and write. | |
249 | * | |
250 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
251 | */ | |
252 | ||
253 | out: | |
254 | /* | |
255 | * Check if handle based operation so we know whether we can continue | |
256 | * or not without returning to caller to reset file handle | |
257 | */ | |
258 | switch (smb_command) { | |
259 | case SMB_COM_READ_ANDX: | |
260 | case SMB_COM_WRITE_ANDX: | |
261 | case SMB_COM_CLOSE: | |
262 | case SMB_COM_FIND_CLOSE2: | |
263 | case SMB_COM_LOCKING_ANDX: | |
264 | rc = -EAGAIN; | |
265 | } | |
266 | ||
267 | unload_nls(nls_codepage); | |
268 | return rc; | |
269 | } | |
270 | ||
ad7a2926 SF |
271 | /* Allocate and return pointer to an SMB request buffer, and set basic |
272 | SMB information in the SMB header. If the return code is zero, this | |
273 | function must have filled in request_buf pointer */ | |
1da177e4 | 274 | static int |
96daf2b0 | 275 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 276 | void **request_buf) |
1da177e4 | 277 | { |
f569599a | 278 | int rc; |
1da177e4 | 279 | |
9162ab20 | 280 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 281 | if (rc) |
1da177e4 LT |
282 | return rc; |
283 | ||
284 | *request_buf = cifs_small_buf_get(); | |
285 | if (*request_buf == NULL) { | |
286 | /* BB should we add a retry in here if not a writepage? */ | |
287 | return -ENOMEM; | |
288 | } | |
289 | ||
63135e08 | 290 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 291 | tcon, wct); |
1da177e4 | 292 | |
790fe579 SF |
293 | if (tcon != NULL) |
294 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 295 | |
f569599a | 296 | return 0; |
5815449d SF |
297 | } |
298 | ||
12b3b8ff | 299 | int |
50c2f753 | 300 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 301 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
302 | { |
303 | int rc; | |
50c2f753 | 304 | struct smb_hdr *buffer; |
12b3b8ff | 305 | |
5815449d | 306 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 307 | if (rc) |
12b3b8ff SF |
308 | return rc; |
309 | ||
04fdabe1 | 310 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 311 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
312 | if (ses->capabilities & CAP_UNICODE) |
313 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 314 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
315 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
316 | ||
317 | /* uid, tid can stay at zero as set in header assemble */ | |
318 | ||
50c2f753 | 319 | /* BB add support for turning on the signing when |
12b3b8ff SF |
320 | this function is used after 1st of session setup requests */ |
321 | ||
322 | return rc; | |
323 | } | |
1da177e4 LT |
324 | |
325 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
326 | static int | |
96daf2b0 | 327 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 328 | void **request_buf, void **response_buf) |
1da177e4 | 329 | { |
1da177e4 LT |
330 | *request_buf = cifs_buf_get(); |
331 | if (*request_buf == NULL) { | |
332 | /* BB should we add a retry in here if not a writepage? */ | |
333 | return -ENOMEM; | |
334 | } | |
335 | /* Although the original thought was we needed the response buf for */ | |
336 | /* potential retries of smb operations it turns out we can determine */ | |
337 | /* from the mid flags when the request buffer can be resent without */ | |
338 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 339 | if (response_buf) |
50c2f753 | 340 | *response_buf = *request_buf; |
1da177e4 LT |
341 | |
342 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 343 | wct); |
1da177e4 | 344 | |
790fe579 SF |
345 | if (tcon != NULL) |
346 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 347 | |
f569599a JL |
348 | return 0; |
349 | } | |
350 | ||
351 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
352 | static int | |
96daf2b0 | 353 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
354 | void **request_buf, void **response_buf) |
355 | { | |
356 | int rc; | |
357 | ||
358 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
359 | if (rc) | |
360 | return rc; | |
361 | ||
362 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
363 | } | |
364 | ||
365 | static int | |
96daf2b0 | 366 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
367 | void **request_buf, void **response_buf) |
368 | { | |
369 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
370 | return -EHOSTDOWN; | |
371 | ||
372 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
373 | } |
374 | ||
50c2f753 | 375 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 376 | { |
12df83c9 JL |
377 | unsigned int total_size; |
378 | ||
379 | /* check for plausible wct */ | |
380 | if (pSMB->hdr.WordCount < 10) | |
381 | goto vt2_err; | |
1da177e4 | 382 | |
1da177e4 | 383 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
384 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
385 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
386 | goto vt2_err; | |
387 | ||
12df83c9 JL |
388 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
389 | if (total_size >= 512) | |
390 | goto vt2_err; | |
391 | ||
fd5707e1 JL |
392 | /* check that bcc is at least as big as parms + data, and that it is |
393 | * less than negotiated smb buffer | |
394 | */ | |
12df83c9 JL |
395 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
396 | if (total_size > get_bcc(&pSMB->hdr) || | |
397 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
398 | goto vt2_err; | |
399 | ||
400 | return 0; | |
401 | vt2_err: | |
50c2f753 | 402 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 403 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 404 | return -EINVAL; |
1da177e4 | 405 | } |
690c522f | 406 | |
31d9e2bd | 407 | static int |
3f618223 | 408 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
409 | { |
410 | int rc = 0; | |
411 | u16 count; | |
412 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 413 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
414 | |
415 | count = get_bcc(&pSMBr->hdr); | |
416 | if (count < SMB1_CLIENT_GUID_SIZE) | |
417 | return -EIO; | |
418 | ||
419 | spin_lock(&cifs_tcp_ses_lock); | |
420 | if (server->srv_count > 1) { | |
421 | spin_unlock(&cifs_tcp_ses_lock); | |
422 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
423 | cifs_dbg(FYI, "server UID changed\n"); | |
424 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
425 | } | |
426 | } else { | |
427 | spin_unlock(&cifs_tcp_ses_lock); | |
428 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
429 | } | |
430 | ||
431 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 432 | server->sec_ntlmssp = true; |
31d9e2bd JL |
433 | } else { |
434 | count -= SMB1_CLIENT_GUID_SIZE; | |
435 | rc = decode_negTokenInit( | |
436 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
437 | if (rc != 1) | |
438 | return -EINVAL; | |
31d9e2bd JL |
439 | } |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
9ddec561 | 444 | int |
38d77c50 | 445 | cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
9ddec561 | 446 | { |
50285882 JL |
447 | bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
448 | bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; | |
38d77c50 JL |
449 | bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
450 | ||
451 | /* | |
452 | * Is signing required by mnt options? If not then check | |
453 | * global_secflags to see if it is there. | |
454 | */ | |
455 | if (!mnt_sign_required) | |
456 | mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == | |
457 | CIFSSEC_MUST_SIGN); | |
458 | ||
459 | /* | |
460 | * If signing is required then it's automatically enabled too, | |
461 | * otherwise, check to see if the secflags allow it. | |
462 | */ | |
463 | mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : | |
464 | (global_secflags & CIFSSEC_MAY_SIGN); | |
465 | ||
466 | /* If server requires signing, does client allow it? */ | |
467 | if (srv_sign_required) { | |
468 | if (!mnt_sign_enabled) { | |
a0a3036b | 469 | cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!\n"); |
38d77c50 | 470 | return -ENOTSUPP; |
9ddec561 | 471 | } |
38d77c50 JL |
472 | server->sign = true; |
473 | } | |
474 | ||
475 | /* If client requires signing, does server allow it? */ | |
476 | if (mnt_sign_required) { | |
477 | if (!srv_sign_enabled) { | |
a0a3036b | 478 | cifs_dbg(VFS, "Server does not support signing!\n"); |
38d77c50 JL |
479 | return -ENOTSUPP; |
480 | } | |
481 | server->sign = true; | |
9ddec561 JL |
482 | } |
483 | ||
bb4c0419 | 484 | if (cifs_rdma_enabled(server) && server->sign) |
a0a3036b | 485 | cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled\n"); |
bb4c0419 | 486 | |
9ddec561 JL |
487 | return 0; |
488 | } | |
489 | ||
2190eca1 JL |
490 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
491 | static int | |
3f618223 | 492 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
493 | { |
494 | __s16 tmp; | |
495 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
496 | ||
497 | if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) | |
498 | return -EOPNOTSUPP; | |
499 | ||
2190eca1 JL |
500 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
501 | server->maxReq = min_t(unsigned int, | |
502 | le16_to_cpu(rsp->MaxMpxCount), | |
503 | cifs_max_pending); | |
504 | set_credits(server, server->maxReq); | |
505 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); | |
1f641d94 JS |
506 | /* set up max_read for readpages check */ |
507 | server->max_read = server->maxBuf; | |
2190eca1 JL |
508 | /* even though we do not use raw we might as well set this |
509 | accurately, in case we ever find a need for it */ | |
510 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
511 | server->max_rw = 0xFF00; | |
512 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
513 | } else { | |
514 | server->max_rw = 0;/* do not need to use raw anyway */ | |
515 | server->capabilities = CAP_MPX_MODE; | |
516 | } | |
517 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
518 | if (tmp == -1) { | |
519 | /* OS/2 often does not set timezone therefore | |
520 | * we must use server time to calc time zone. | |
521 | * Could deviate slightly from the right zone. | |
522 | * Smallest defined timezone difference is 15 minutes | |
523 | * (i.e. Nepal). Rounding up/down is done to match | |
524 | * this requirement. | |
525 | */ | |
526 | int val, seconds, remain, result; | |
95390201 AB |
527 | struct timespec64 ts; |
528 | time64_t utc = ktime_get_real_seconds(); | |
2190eca1 JL |
529 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
530 | rsp->SrvTime.Time, 0); | |
95390201 AB |
531 | cifs_dbg(FYI, "SrvTime %lld sec since 1970 (utc: %lld) diff: %lld\n", |
532 | ts.tv_sec, utc, | |
533 | utc - ts.tv_sec); | |
e37fea58 | 534 | val = (int)(utc - ts.tv_sec); |
2190eca1 JL |
535 | seconds = abs(val); |
536 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
537 | remain = seconds % MIN_TZ_ADJ; | |
538 | if (remain >= (MIN_TZ_ADJ / 2)) | |
539 | result += MIN_TZ_ADJ; | |
540 | if (val < 0) | |
541 | result = -result; | |
542 | server->timeAdj = result; | |
543 | } else { | |
544 | server->timeAdj = (int)tmp; | |
545 | server->timeAdj *= 60; /* also in seconds */ | |
546 | } | |
547 | cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); | |
548 | ||
549 | ||
550 | /* BB get server time for time conversions and add | |
551 | code to use it and timezone since this is not UTC */ | |
552 | ||
553 | if (rsp->EncryptionKeyLength == | |
554 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
555 | memcpy(server->cryptkey, rsp->EncryptionKey, | |
556 | CIFS_CRYPTO_KEY_SIZE); | |
557 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { | |
558 | return -EIO; /* need cryptkey unless plain text */ | |
559 | } | |
560 | ||
561 | cifs_dbg(FYI, "LANMAN negotiated\n"); | |
562 | return 0; | |
563 | } | |
564 | #else | |
565 | static inline int | |
3f618223 | 566 | decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
2190eca1 JL |
567 | { |
568 | cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); | |
569 | return -EOPNOTSUPP; | |
570 | } | |
571 | #endif | |
572 | ||
9193400b | 573 | static bool |
3f618223 | 574 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 575 | { |
3f618223 JL |
576 | switch (sectype) { |
577 | case RawNTLMSSP: | |
578 | case Kerberos: | |
9193400b | 579 | return true; |
3f618223 JL |
580 | case Unspecified: |
581 | if (global_secflags & | |
582 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
583 | return true; | |
df561f66 | 584 | fallthrough; |
3f618223 JL |
585 | default: |
586 | return false; | |
587 | } | |
9193400b JL |
588 | } |
589 | ||
1da177e4 | 590 | int |
286170aa | 591 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
592 | { |
593 | NEGOTIATE_REQ *pSMB; | |
594 | NEGOTIATE_RSP *pSMBr; | |
595 | int rc = 0; | |
596 | int bytes_returned; | |
3979877e | 597 | int i; |
3534b850 | 598 | struct TCP_Server_Info *server = ses->server; |
1da177e4 LT |
599 | u16 count; |
600 | ||
3534b850 JL |
601 | if (!server) { |
602 | WARN(1, "%s: server is NULL!\n", __func__); | |
603 | return -EIO; | |
1da177e4 | 604 | } |
3534b850 | 605 | |
1da177e4 LT |
606 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
607 | (void **) &pSMB, (void **) &pSMBr); | |
608 | if (rc) | |
609 | return rc; | |
750d1151 | 610 | |
88257360 | 611 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 612 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 613 | |
3f618223 | 614 | if (should_set_ext_sec_flag(ses->sectype)) { |
a0a3036b | 615 | cifs_dbg(FYI, "Requesting extended security\n"); |
ac683924 SF |
616 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
617 | } | |
50c2f753 | 618 | |
3979877e | 619 | count = 0; |
bcfb84a9 SR |
620 | /* |
621 | * We know that all the name entries in the protocols array | |
622 | * are short (< 16 bytes anyway) and are NUL terminated. | |
623 | */ | |
50c2f753 | 624 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
bcfb84a9 SR |
625 | size_t len = strlen(protocols[i].name) + 1; |
626 | ||
627 | memcpy(pSMB->DialectsArray+count, protocols[i].name, len); | |
628 | count += len; | |
3979877e | 629 | } |
be8e3b00 | 630 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
631 | pSMB->ByteCount = cpu_to_le16(count); |
632 | ||
633 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
634 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 635 | if (rc != 0) |
254e55ed SF |
636 | goto neg_err_exit; |
637 | ||
9bf67e51 | 638 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 639 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 640 | /* Check wct = 1 error case */ |
9bf67e51 | 641 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 642 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 643 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
644 | could not negotiate a common dialect */ |
645 | rc = -EOPNOTSUPP; | |
646 | goto neg_err_exit; | |
790fe579 | 647 | } else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8 | 648 | server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223 | 649 | rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec561 | 650 | goto signing_check; |
790fe579 | 651 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
652 | /* unknown wct */ |
653 | rc = -EOPNOTSUPP; | |
654 | goto neg_err_exit; | |
655 | } | |
2190eca1 JL |
656 | /* else wct == 17, NTLM or better */ |
657 | ||
96daf2b0 SF |
658 | server->sec_mode = pSMBr->SecurityMode; |
659 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 660 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 661 | |
254e55ed SF |
662 | /* one byte, so no need to convert this or EncryptionKeyLen from |
663 | little endian */ | |
10b9b98e PS |
664 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
665 | cifs_max_pending); | |
45275789 | 666 | set_credits(server, server->maxReq); |
254e55ed | 667 | /* probably no need to store and check maxvcs */ |
c974befa | 668 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
1f641d94 JS |
669 | /* set up max_read for readpages check */ |
670 | server->max_read = server->maxBuf; | |
eca6acf9 | 671 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 672 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 673 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
674 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
675 | server->timeAdj *= 60; | |
31d9e2bd | 676 | |
e598d1d8 JL |
677 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
678 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 679 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 680 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
681 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
682 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 683 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 684 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 685 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 686 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
687 | } else { |
688 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 689 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 690 | } |
254e55ed SF |
691 | |
692 | signing_check: | |
9ddec561 | 693 | if (!rc) |
38d77c50 | 694 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 695 | neg_err_exit: |
4a6d87f1 | 696 | cifs_buf_release(pSMB); |
254e55ed | 697 | |
f96637be | 698 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
699 | return rc; |
700 | } | |
701 | ||
702 | int | |
2e6e02ab | 703 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
704 | { |
705 | struct smb_hdr *smb_buffer; | |
1da177e4 | 706 | int rc = 0; |
1da177e4 | 707 | |
f96637be | 708 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 709 | |
f1987b44 JL |
710 | /* BB: do we need to check this? These should never be NULL. */ |
711 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
712 | return -EIO; | |
1da177e4 | 713 | |
f1987b44 JL |
714 | /* |
715 | * No need to return error on this operation if tid invalidated and | |
716 | * closed on server already e.g. due to tcp session crashing. Also, | |
717 | * the tcon is no longer on the list, so no need to take lock before | |
718 | * checking this. | |
719 | */ | |
268875b9 | 720 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 721 | return 0; |
1da177e4 | 722 | |
50c2f753 | 723 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 724 | (void **)&smb_buffer); |
f1987b44 | 725 | if (rc) |
1da177e4 | 726 | return rc; |
133672ef | 727 | |
792af7b0 | 728 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 729 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 730 | if (rc) |
f96637be | 731 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 732 | |
50c2f753 | 733 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 734 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
735 | if (rc == -EAGAIN) |
736 | rc = 0; | |
737 | ||
738 | return rc; | |
739 | } | |
740 | ||
766fdbb5 JL |
741 | /* |
742 | * This is a no-op for now. We're not really interested in the reply, but | |
743 | * rather in the fact that the server sent one and that server->lstrp | |
744 | * gets updated. | |
745 | * | |
746 | * FIXME: maybe we should consider checking that the reply matches request? | |
747 | */ | |
748 | static void | |
749 | cifs_echo_callback(struct mid_q_entry *mid) | |
750 | { | |
751 | struct TCP_Server_Info *server = mid->callback_data; | |
34f4deb7 | 752 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
766fdbb5 JL |
753 | |
754 | DeleteMidQEntry(mid); | |
34f4deb7 | 755 | add_credits(server, &credits, CIFS_ECHO_OP); |
766fdbb5 JL |
756 | } |
757 | ||
758 | int | |
759 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
760 | { | |
761 | ECHO_REQ *smb; | |
762 | int rc = 0; | |
738f9de5 PS |
763 | struct kvec iov[2]; |
764 | struct smb_rqst rqst = { .rq_iov = iov, | |
765 | .rq_nvec = 2 }; | |
766fdbb5 | 766 | |
f96637be | 767 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
768 | |
769 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
770 | if (rc) | |
771 | return rc; | |
772 | ||
26c9cb66 SF |
773 | if (server->capabilities & CAP_UNICODE) |
774 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
775 | ||
766fdbb5 | 776 | /* set up echo request */ |
5443d130 | 777 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
778 | smb->hdr.WordCount = 1; |
779 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 780 | put_bcc(1, &smb->hdr); |
766fdbb5 | 781 | smb->Data[0] = 'a'; |
be8e3b00 | 782 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
783 | |
784 | iov[0].iov_len = 4; | |
785 | iov[0].iov_base = smb; | |
786 | iov[1].iov_len = get_rfc1002_length(smb); | |
787 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 788 | |
9b7c18a2 | 789 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
392e1c5d | 790 | server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL); |
766fdbb5 | 791 | if (rc) |
f96637be | 792 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
793 | |
794 | cifs_small_buf_release(smb); | |
795 | ||
796 | return rc; | |
797 | } | |
798 | ||
1da177e4 | 799 | int |
58c45c58 | 800 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 801 | { |
1da177e4 LT |
802 | LOGOFF_ANDX_REQ *pSMB; |
803 | int rc = 0; | |
1da177e4 | 804 | |
f96637be | 805 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 806 | |
14fbf50d JL |
807 | /* |
808 | * BB: do we need to check validity of ses and server? They should | |
809 | * always be valid since we have an active reference. If not, that | |
810 | * should probably be a BUG() | |
811 | */ | |
812 | if (!ses || !ses->server) | |
3b795210 SF |
813 | return -EIO; |
814 | ||
d7b619cf | 815 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
816 | if (ses->need_reconnect) |
817 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
818 | already closed due to reconnect */ | |
1da177e4 LT |
819 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
820 | if (rc) { | |
d7b619cf | 821 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
822 | return rc; |
823 | } | |
824 | ||
88257360 | 825 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 826 | |
38d77c50 JL |
827 | if (ses->server->sign) |
828 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
829 | |
830 | pSMB->hdr.Uid = ses->Suid; | |
831 | ||
832 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 833 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 834 | cifs_small_buf_release(pSMB); |
3b795210 | 835 | session_already_dead: |
d7b619cf | 836 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
837 | |
838 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 839 | since server closed smb session, no sense reporting |
1da177e4 LT |
840 | error */ |
841 | if (rc == -EAGAIN) | |
842 | rc = 0; | |
843 | return rc; | |
844 | } | |
845 | ||
2d785a50 | 846 | int |
6d5786a3 PS |
847 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
848 | const char *fileName, __u16 type, | |
849 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
850 | { |
851 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
852 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
853 | struct unlink_psx_rq *pRqD; | |
854 | int name_len; | |
855 | int rc = 0; | |
856 | int bytes_returned = 0; | |
857 | __u16 params, param_offset, offset, byte_count; | |
858 | ||
f96637be | 859 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
860 | PsxDelete: |
861 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
862 | (void **) &pSMBr); | |
863 | if (rc) | |
864 | return rc; | |
865 | ||
866 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
867 | name_len = | |
acbbb76a SF |
868 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
869 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
870 | name_len++; /* trailing null */ |
871 | name_len *= 2; | |
340625e6 RS |
872 | } else { |
873 | name_len = copy_path_name(pSMB->FileName, fileName); | |
2d785a50 SF |
874 | } |
875 | ||
876 | params = 6 + name_len; | |
877 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
878 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
879 | pSMB->MaxSetupCount = 0; | |
880 | pSMB->Reserved = 0; | |
881 | pSMB->Flags = 0; | |
882 | pSMB->Timeout = 0; | |
883 | pSMB->Reserved2 = 0; | |
884 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
885 | InformationLevel) - 4; | |
886 | offset = param_offset + params; | |
887 | ||
888 | /* Setup pointer to Request Data (inode type) */ | |
889 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
890 | pRqD->type = cpu_to_le16(type); | |
891 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
892 | pSMB->DataOffset = cpu_to_le16(offset); | |
893 | pSMB->SetupCount = 1; | |
894 | pSMB->Reserved3 = 0; | |
895 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
896 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
897 | ||
898 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
899 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
900 | pSMB->ParameterCount = cpu_to_le16(params); | |
901 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
902 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
903 | pSMB->Reserved4 = 0; | |
be8e3b00 | 904 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
905 | pSMB->ByteCount = cpu_to_le16(byte_count); |
906 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
907 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 908 | if (rc) |
f96637be | 909 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
910 | cifs_buf_release(pSMB); |
911 | ||
44c58186 | 912 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
913 | |
914 | if (rc == -EAGAIN) | |
915 | goto PsxDelete; | |
916 | ||
917 | return rc; | |
918 | } | |
919 | ||
1da177e4 | 920 | int |
ed6875e0 PS |
921 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
922 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
923 | { |
924 | DELETE_FILE_REQ *pSMB = NULL; | |
925 | DELETE_FILE_RSP *pSMBr = NULL; | |
926 | int rc = 0; | |
927 | int bytes_returned; | |
928 | int name_len; | |
2baa2682 | 929 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
930 | |
931 | DelFileRetry: | |
932 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
933 | (void **) &pSMBr); | |
934 | if (rc) | |
935 | return rc; | |
936 | ||
937 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
938 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
939 | PATH_MAX, cifs_sb->local_nls, | |
940 | remap); | |
1da177e4 LT |
941 | name_len++; /* trailing null */ |
942 | name_len *= 2; | |
340625e6 RS |
943 | } else { |
944 | name_len = copy_path_name(pSMB->fileName, name); | |
1da177e4 LT |
945 | } |
946 | pSMB->SearchAttributes = | |
947 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
948 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 949 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
950 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
951 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
952 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 953 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 954 | if (rc) |
f96637be | 955 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
956 | |
957 | cifs_buf_release(pSMB); | |
958 | if (rc == -EAGAIN) | |
959 | goto DelFileRetry; | |
960 | ||
961 | return rc; | |
962 | } | |
963 | ||
964 | int | |
f958ca5d PS |
965 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
966 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
967 | { |
968 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
969 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
970 | int rc = 0; | |
971 | int bytes_returned; | |
972 | int name_len; | |
2baa2682 | 973 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 974 | |
f96637be | 975 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
976 | RmDirRetry: |
977 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
978 | (void **) &pSMBr); | |
979 | if (rc) | |
980 | return rc; | |
981 | ||
982 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
983 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
984 | PATH_MAX, cifs_sb->local_nls, | |
985 | remap); | |
1da177e4 LT |
986 | name_len++; /* trailing null */ |
987 | name_len *= 2; | |
340625e6 RS |
988 | } else { |
989 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
990 | } |
991 | ||
992 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 993 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
994 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
995 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
996 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 997 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 998 | if (rc) |
f96637be | 999 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
1000 | |
1001 | cifs_buf_release(pSMB); | |
1002 | if (rc == -EAGAIN) | |
1003 | goto RmDirRetry; | |
1004 | return rc; | |
1005 | } | |
1006 | ||
1007 | int | |
c3ca78e2 SF |
1008 | CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode, |
1009 | struct cifs_tcon *tcon, const char *name, | |
f436720e | 1010 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
1011 | { |
1012 | int rc = 0; | |
1013 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
1014 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
1015 | int bytes_returned; | |
1016 | int name_len; | |
2baa2682 | 1017 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 1018 | |
f96637be | 1019 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
1020 | MkDirRetry: |
1021 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1022 | (void **) &pSMBr); | |
1023 | if (rc) | |
1024 | return rc; | |
1025 | ||
1026 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 1027 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
1028 | PATH_MAX, cifs_sb->local_nls, |
1029 | remap); | |
1da177e4 LT |
1030 | name_len++; /* trailing null */ |
1031 | name_len *= 2; | |
340625e6 RS |
1032 | } else { |
1033 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
1034 | } |
1035 | ||
1036 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1037 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1038 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1039 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1040 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1041 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1042 | if (rc) |
f96637be | 1043 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 1044 | |
1da177e4 LT |
1045 | cifs_buf_release(pSMB); |
1046 | if (rc == -EAGAIN) | |
1047 | goto MkDirRetry; | |
1048 | return rc; | |
1049 | } | |
1050 | ||
2dd29d31 | 1051 | int |
6d5786a3 PS |
1052 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1053 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1054 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1055 | const char *name, const struct nls_table *nls_codepage, | |
1056 | int remap) | |
2dd29d31 SF |
1057 | { |
1058 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1059 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1060 | int name_len; | |
1061 | int rc = 0; | |
1062 | int bytes_returned = 0; | |
2dd29d31 | 1063 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1064 | OPEN_PSX_REQ *pdata; |
1065 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1066 | |
f96637be | 1067 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
1068 | PsxCreat: |
1069 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1070 | (void **) &pSMBr); | |
1071 | if (rc) | |
1072 | return rc; | |
1073 | ||
1074 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1075 | name_len = | |
acbbb76a SF |
1076 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1077 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1078 | name_len++; /* trailing null */ |
1079 | name_len *= 2; | |
340625e6 RS |
1080 | } else { |
1081 | name_len = copy_path_name(pSMB->FileName, name); | |
2dd29d31 SF |
1082 | } |
1083 | ||
1084 | params = 6 + name_len; | |
1085 | count = sizeof(OPEN_PSX_REQ); | |
1086 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1087 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1088 | pSMB->MaxSetupCount = 0; | |
1089 | pSMB->Reserved = 0; | |
1090 | pSMB->Flags = 0; | |
1091 | pSMB->Timeout = 0; | |
1092 | pSMB->Reserved2 = 0; | |
1093 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1094 | InformationLevel) - 4; |
2dd29d31 | 1095 | offset = param_offset + params; |
2dd29d31 | 1096 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1097 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1098 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1099 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1100 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1101 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1102 | pSMB->DataOffset = cpu_to_le16(offset); | |
1103 | pSMB->SetupCount = 1; | |
1104 | pSMB->Reserved3 = 0; | |
1105 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1106 | byte_count = 3 /* pad */ + params + count; | |
1107 | ||
1108 | pSMB->DataCount = cpu_to_le16(count); | |
1109 | pSMB->ParameterCount = cpu_to_le16(params); | |
1110 | pSMB->TotalDataCount = pSMB->DataCount; | |
1111 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1112 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1113 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1114 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1115 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1116 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1117 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1118 | if (rc) { | |
f96637be | 1119 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
1120 | goto psx_create_err; |
1121 | } | |
1122 | ||
f96637be | 1123 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
1124 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1125 | ||
820a803f | 1126 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1127 | rc = -EIO; /* bad smb */ |
1128 | goto psx_create_err; | |
1129 | } | |
1130 | ||
1131 | /* copy return information to pRetData */ | |
50c2f753 | 1132 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1133 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1134 | |
2dd29d31 | 1135 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1136 | if (netfid) |
2dd29d31 SF |
1137 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1138 | /* Let caller know file was created so we can set the mode. */ | |
1139 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1140 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1141 | *pOplock |= CIFS_CREATE_ACTION; |
1142 | /* check to make sure response data is there */ | |
8f2376ad CG |
1143 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1144 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 1145 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 1146 | } else { |
820a803f | 1147 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1148 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 1149 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1150 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1151 | goto psx_create_err; |
1152 | } | |
50c2f753 | 1153 | memcpy((char *) pRetData, |
cbac3cba | 1154 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1155 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1156 | } |
2dd29d31 SF |
1157 | |
1158 | psx_create_err: | |
1159 | cifs_buf_release(pSMB); | |
1160 | ||
65bc98b0 | 1161 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1162 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1163 | else |
44c58186 | 1164 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1165 | |
1166 | if (rc == -EAGAIN) | |
1167 | goto PsxCreat; | |
1168 | ||
50c2f753 | 1169 | return rc; |
2dd29d31 SF |
1170 | } |
1171 | ||
a9d02ad4 SF |
1172 | static __u16 convert_disposition(int disposition) |
1173 | { | |
1174 | __u16 ofun = 0; | |
1175 | ||
1176 | switch (disposition) { | |
1177 | case FILE_SUPERSEDE: | |
1178 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1179 | break; | |
1180 | case FILE_OPEN: | |
1181 | ofun = SMBOPEN_OAPPEND; | |
1182 | break; | |
1183 | case FILE_CREATE: | |
1184 | ofun = SMBOPEN_OCREATE; | |
1185 | break; | |
1186 | case FILE_OPEN_IF: | |
1187 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1188 | break; | |
1189 | case FILE_OVERWRITE: | |
1190 | ofun = SMBOPEN_OTRUNC; | |
1191 | break; | |
1192 | case FILE_OVERWRITE_IF: | |
1193 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1194 | break; | |
1195 | default: | |
f96637be | 1196 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1197 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1198 | } | |
1199 | return ofun; | |
1200 | } | |
1201 | ||
35fc37d5 JL |
1202 | static int |
1203 | access_flags_to_smbopen_mode(const int access_flags) | |
1204 | { | |
1205 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1206 | ||
1207 | if (masked_flags == GENERIC_READ) | |
1208 | return SMBOPEN_READ; | |
1209 | else if (masked_flags == GENERIC_WRITE) | |
1210 | return SMBOPEN_WRITE; | |
1211 | ||
1212 | /* just go for read/write */ | |
1213 | return SMBOPEN_READWRITE; | |
1214 | } | |
1215 | ||
a9d02ad4 | 1216 | int |
6d5786a3 | 1217 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1218 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1219 | const int access_flags, const int create_options, __u16 *netfid, |
1220 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1221 | const struct nls_table *nls_codepage, int remap) |
1222 | { | |
1223 | int rc = -EACCES; | |
1224 | OPENX_REQ *pSMB = NULL; | |
1225 | OPENX_RSP *pSMBr = NULL; | |
1226 | int bytes_returned; | |
1227 | int name_len; | |
1228 | __u16 count; | |
1229 | ||
1230 | OldOpenRetry: | |
1231 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1232 | (void **) &pSMBr); | |
1233 | if (rc) | |
1234 | return rc; | |
1235 | ||
1236 | pSMB->AndXCommand = 0xFF; /* none */ | |
1237 | ||
1238 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1239 | count = 1; /* account for one byte pad to word boundary */ | |
1240 | name_len = | |
acbbb76a SF |
1241 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1242 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1243 | name_len++; /* trailing null */ |
1244 | name_len *= 2; | |
340625e6 | 1245 | } else { |
a9d02ad4 | 1246 | count = 0; /* no pad */ |
340625e6 | 1247 | name_len = copy_path_name(pSMB->fileName, fileName); |
a9d02ad4 SF |
1248 | } |
1249 | if (*pOplock & REQ_OPLOCK) | |
1250 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1251 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1252 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1253 | |
a9d02ad4 | 1254 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1255 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1256 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1257 | /* set file as system file if special file such | |
1258 | as fifo and server expecting SFU style and | |
1259 | no Unix extensions */ | |
1260 | ||
790fe579 SF |
1261 | if (create_options & CREATE_OPTION_SPECIAL) |
1262 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1263 | else /* BB FIXME BB */ |
1264 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1265 | |
67750fb9 JL |
1266 | if (create_options & CREATE_OPTION_READONLY) |
1267 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1268 | |
1269 | /* BB FIXME BB */ | |
50c2f753 SF |
1270 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1271 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1272 | /* BB FIXME END BB */ |
3e87d803 SF |
1273 | |
1274 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1275 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1276 | count += name_len; |
be8e3b00 | 1277 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1278 | |
1279 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1280 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1281 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1282 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1283 | if (rc) { |
f96637be | 1284 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1285 | } else { |
1286 | /* BB verify if wct == 15 */ | |
1287 | ||
582d21e5 | 1288 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1289 | |
1290 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1291 | /* Let caller know file was created so we can set the mode. */ | |
1292 | /* Do we care about the CreateAction in any other cases? */ | |
1293 | /* BB FIXME BB */ | |
790fe579 | 1294 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1295 | *pOplock |= CIFS_CREATE_ACTION; */ |
1296 | /* BB FIXME END */ | |
1297 | ||
790fe579 | 1298 | if (pfile_info) { |
a9d02ad4 SF |
1299 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1300 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1301 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1302 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1303 | pfile_info->Attributes = |
50c2f753 | 1304 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1305 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1306 | pfile_info->AllocationSize = |
1307 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1308 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1309 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1310 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1311 | } |
1312 | } | |
1313 | ||
1314 | cifs_buf_release(pSMB); | |
1315 | if (rc == -EAGAIN) | |
1316 | goto OldOpenRetry; | |
1317 | return rc; | |
1318 | } | |
1319 | ||
1da177e4 | 1320 | int |
d81b8a40 PS |
1321 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1322 | FILE_ALL_INFO *buf) | |
1da177e4 | 1323 | { |
1afdea4f | 1324 | int rc; |
9bf4fa01 PS |
1325 | OPEN_REQ *req = NULL; |
1326 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1327 | int bytes_returned; |
1328 | int name_len; | |
1329 | __u16 count; | |
d81b8a40 PS |
1330 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1331 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1332 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1333 | const struct nls_table *nls = cifs_sb->local_nls; |
1334 | int create_options = oparms->create_options; | |
1335 | int desired_access = oparms->desired_access; | |
1336 | int disposition = oparms->disposition; | |
1337 | const char *path = oparms->path; | |
1da177e4 LT |
1338 | |
1339 | openRetry: | |
9bf4fa01 PS |
1340 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1341 | (void **)&rsp); | |
1da177e4 LT |
1342 | if (rc) |
1343 | return rc; | |
1344 | ||
9bf4fa01 PS |
1345 | /* no commands go after this */ |
1346 | req->AndXCommand = 0xFF; | |
1da177e4 | 1347 | |
9bf4fa01 PS |
1348 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1349 | /* account for one byte pad to word boundary */ | |
1350 | count = 1; | |
1351 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1352 | path, PATH_MAX, nls, remap); | |
1353 | /* trailing null */ | |
1354 | name_len++; | |
1da177e4 | 1355 | name_len *= 2; |
9bf4fa01 PS |
1356 | req->NameLength = cpu_to_le16(name_len); |
1357 | } else { | |
1358 | /* BB improve check for buffer overruns BB */ | |
1359 | /* no pad */ | |
1360 | count = 0; | |
340625e6 | 1361 | name_len = copy_path_name(req->fileName, path); |
9bf4fa01 | 1362 | req->NameLength = cpu_to_le16(name_len); |
1da177e4 | 1363 | } |
9bf4fa01 PS |
1364 | |
1365 | if (*oplock & REQ_OPLOCK) | |
1366 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1367 | else if (*oplock & REQ_BATCHOPLOCK) | |
1368 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1369 | ||
1370 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1371 | req->AllocationSize = 0; | |
1372 | ||
1373 | /* | |
1374 | * Set file as system file if special file such as fifo and server | |
1375 | * expecting SFU style and no Unix extensions. | |
1376 | */ | |
790fe579 | 1377 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1378 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1379 | else |
9bf4fa01 | 1380 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1381 | |
9bf4fa01 PS |
1382 | /* |
1383 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1384 | * sensitive checks for other servers such as Samba. | |
1385 | */ | |
1da177e4 | 1386 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1387 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1388 | |
67750fb9 | 1389 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1390 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1391 | ||
1392 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1393 | req->CreateDisposition = cpu_to_le32(disposition); | |
1394 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1395 | |
09d1db5c | 1396 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1397 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1398 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1399 | |
1400 | count += name_len; | |
9bf4fa01 | 1401 | inc_rfc1001_len(req, count); |
1da177e4 | 1402 | |
9bf4fa01 PS |
1403 | req->ByteCount = cpu_to_le16(count); |
1404 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1405 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1406 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1407 | if (rc) { |
f96637be | 1408 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1409 | cifs_buf_release(req); |
1410 | if (rc == -EAGAIN) | |
1411 | goto openRetry; | |
1412 | return rc; | |
1da177e4 | 1413 | } |
a5a2b489 | 1414 | |
9bf4fa01 PS |
1415 | /* 1 byte no need to le_to_cpu */ |
1416 | *oplock = rsp->OplockLevel; | |
1417 | /* cifs fid stays in le */ | |
d81b8a40 | 1418 | oparms->fid->netfid = rsp->Fid; |
86f740f2 | 1419 | oparms->fid->access = desired_access; |
9bf4fa01 PS |
1420 | |
1421 | /* Let caller know file was created so we can set the mode. */ | |
1422 | /* Do we care about the CreateAction in any other cases? */ | |
1423 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1424 | *oplock |= CIFS_CREATE_ACTION; | |
1425 | ||
1426 | if (buf) { | |
1427 | /* copy from CreationTime to Attributes */ | |
1428 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1429 | /* the file_info buf is endian converted by caller */ | |
1430 | buf->AllocationSize = rsp->AllocationSize; | |
1431 | buf->EndOfFile = rsp->EndOfFile; | |
1432 | buf->NumberOfLinks = cpu_to_le32(1); | |
1433 | buf->DeletePending = 0; | |
1434 | } | |
1435 | ||
1436 | cifs_buf_release(req); | |
1da177e4 LT |
1437 | return rc; |
1438 | } | |
1439 | ||
e28bc5b1 JL |
1440 | /* |
1441 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1442 | * current bigbuf. | |
1443 | */ | |
c42a6abe | 1444 | int |
350be257 | 1445 | cifs_discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1 | 1446 | { |
05432e29 RS |
1447 | unsigned int rfclen = server->pdu_size; |
1448 | int remaining = rfclen + server->vals->header_preamble_size - | |
1449 | server->total_read; | |
e28bc5b1 JL |
1450 | |
1451 | while (remaining > 0) { | |
1452 | int length; | |
1453 | ||
1454 | length = cifs_read_from_socket(server, server->bigbuf, | |
1455 | min_t(unsigned int, remaining, | |
1887f601 | 1456 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1457 | if (length < 0) |
1458 | return length; | |
1459 | server->total_read += length; | |
1460 | remaining -= length; | |
1461 | } | |
1462 | ||
e28bc5b1 JL |
1463 | return 0; |
1464 | } | |
1465 | ||
6cc3b242 | 1466 | static int |
8004c78c PS |
1467 | __cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid, |
1468 | bool malformed) | |
6cc3b242 PS |
1469 | { |
1470 | int length; | |
6cc3b242 | 1471 | |
350be257 | 1472 | length = cifs_discard_remaining_data(server); |
8004c78c | 1473 | dequeue_mid(mid, malformed); |
350be257 PS |
1474 | mid->resp_buf = server->smallbuf; |
1475 | server->smallbuf = NULL; | |
6cc3b242 PS |
1476 | return length; |
1477 | } | |
1478 | ||
8004c78c PS |
1479 | static int |
1480 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1481 | { | |
1482 | struct cifs_readdata *rdata = mid->callback_data; | |
1483 | ||
1484 | return __cifs_readv_discard(server, mid, rdata->result); | |
1485 | } | |
1486 | ||
09a4707e | 1487 | int |
e28bc5b1 JL |
1488 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1489 | { | |
1490 | int length, len; | |
8d5ce4d2 | 1491 | unsigned int data_offset, data_len; |
e28bc5b1 | 1492 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf | 1493 | char *buf = server->smallbuf; |
2e96467d | 1494 | unsigned int buflen = server->pdu_size + |
93012bf9 | 1495 | server->vals->header_preamble_size; |
74dcf418 | 1496 | bool use_rdma_mr = false; |
e28bc5b1 | 1497 | |
f96637be JP |
1498 | cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
1499 | __func__, mid->mid, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1500 | |
1501 | /* | |
1502 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1503 | * can if there's not enough data. At this point, we've read down to | |
1504 | * the Mid. | |
1505 | */ | |
eb378711 | 1506 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1507 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1508 | |
a6137305 AV |
1509 | length = cifs_read_from_socket(server, |
1510 | buf + HEADER_SIZE(server) - 1, len); | |
e28bc5b1 JL |
1511 | if (length < 0) |
1512 | return length; | |
1513 | server->total_read += length; | |
1514 | ||
511c54a2 PS |
1515 | if (server->ops->is_session_expired && |
1516 | server->ops->is_session_expired(buf)) { | |
1517 | cifs_reconnect(server); | |
511c54a2 PS |
1518 | return -1; |
1519 | } | |
1520 | ||
6cc3b242 | 1521 | if (server->ops->is_status_pending && |
66265f13 | 1522 | server->ops->is_status_pending(buf, server)) { |
350be257 | 1523 | cifs_discard_remaining_data(server); |
6cc3b242 PS |
1524 | return -1; |
1525 | } | |
1526 | ||
8004c78c PS |
1527 | /* set up first two iov for signature check and to get credits */ |
1528 | rdata->iov[0].iov_base = buf; | |
bb1bccb6 PS |
1529 | rdata->iov[0].iov_len = server->vals->header_preamble_size; |
1530 | rdata->iov[1].iov_base = buf + server->vals->header_preamble_size; | |
1531 | rdata->iov[1].iov_len = | |
1532 | server->total_read - server->vals->header_preamble_size; | |
8004c78c PS |
1533 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
1534 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
1535 | cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n", | |
1536 | rdata->iov[1].iov_base, rdata->iov[1].iov_len); | |
1537 | ||
e28bc5b1 | 1538 | /* Was the SMB read successful? */ |
eb378711 | 1539 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 | 1540 | if (rdata->result != 0) { |
f96637be JP |
1541 | cifs_dbg(FYI, "%s: server returned error %d\n", |
1542 | __func__, rdata->result); | |
8004c78c PS |
1543 | /* normal error on read response */ |
1544 | return __cifs_readv_discard(server, mid, false); | |
e28bc5b1 JL |
1545 | } |
1546 | ||
1547 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1548 | if (server->total_read < server->vals->read_rsp_size) { |
f96637be JP |
1549 | cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
1550 | __func__, server->total_read, | |
1551 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1552 | rdata->result = -EIO; |
1553 | return cifs_readv_discard(server, mid); | |
1554 | } | |
1555 | ||
93012bf9 RS |
1556 | data_offset = server->ops->read_data_offset(buf) + |
1557 | server->vals->header_preamble_size; | |
e28bc5b1 JL |
1558 | if (data_offset < server->total_read) { |
1559 | /* | |
1560 | * win2k8 sometimes sends an offset of 0 when the read | |
1561 | * is beyond the EOF. Treat it as if the data starts just after | |
1562 | * the header. | |
1563 | */ | |
f96637be JP |
1564 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
1565 | __func__, data_offset); | |
e28bc5b1 JL |
1566 | data_offset = server->total_read; |
1567 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1568 | /* data_offset is beyond the end of smallbuf */ | |
f96637be JP |
1569 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
1570 | __func__, data_offset); | |
e28bc5b1 JL |
1571 | rdata->result = -EIO; |
1572 | return cifs_readv_discard(server, mid); | |
1573 | } | |
1574 | ||
f96637be JP |
1575 | cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
1576 | __func__, server->total_read, data_offset); | |
e28bc5b1 JL |
1577 | |
1578 | len = data_offset - server->total_read; | |
1579 | if (len > 0) { | |
1580 | /* read any junk before data into the rest of smallbuf */ | |
a6137305 AV |
1581 | length = cifs_read_from_socket(server, |
1582 | buf + server->total_read, len); | |
e28bc5b1 JL |
1583 | if (length < 0) |
1584 | return length; | |
1585 | server->total_read += length; | |
1586 | } | |
1587 | ||
e28bc5b1 | 1588 | /* how much data is in the response? */ |
74dcf418 LL |
1589 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1590 | use_rdma_mr = rdata->mr; | |
1591 | #endif | |
1592 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
1593 | if (!use_rdma_mr && (data_offset + data_len > buflen)) { | |
e28bc5b1 JL |
1594 | /* data_len is corrupt -- discard frame */ |
1595 | rdata->result = -EIO; | |
1596 | return cifs_readv_discard(server, mid); | |
1597 | } | |
1598 | ||
8321fec4 JL |
1599 | length = rdata->read_into_pages(server, rdata, data_len); |
1600 | if (length < 0) | |
1601 | return length; | |
e28bc5b1 | 1602 | |
8321fec4 | 1603 | server->total_read += length; |
e28bc5b1 | 1604 | |
f96637be JP |
1605 | cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
1606 | server->total_read, buflen, data_len); | |
e28bc5b1 JL |
1607 | |
1608 | /* discard anything left over */ | |
5ffef7bf | 1609 | if (server->total_read < buflen) |
e28bc5b1 JL |
1610 | return cifs_readv_discard(server, mid); |
1611 | ||
1612 | dequeue_mid(mid, false); | |
350be257 PS |
1613 | mid->resp_buf = server->smallbuf; |
1614 | server->smallbuf = NULL; | |
e28bc5b1 JL |
1615 | return length; |
1616 | } | |
1617 | ||
e28bc5b1 JL |
1618 | static void |
1619 | cifs_readv_callback(struct mid_q_entry *mid) | |
1620 | { | |
1621 | struct cifs_readdata *rdata = mid->callback_data; | |
1622 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1623 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1624 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1625 | .rq_nvec = 2, | |
8321fec4 | 1626 | .rq_pages = rdata->pages, |
6d3adb23 | 1627 | .rq_offset = rdata->page_offset, |
8321fec4 JL |
1628 | .rq_npages = rdata->nr_pages, |
1629 | .rq_pagesz = rdata->pagesz, | |
1630 | .rq_tailsz = rdata->tailsz }; | |
34f4deb7 | 1631 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
e28bc5b1 | 1632 | |
f96637be JP |
1633 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1634 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1635 | rdata->bytes); | |
e28bc5b1 | 1636 | |
7c9421e1 | 1637 | switch (mid->mid_state) { |
e28bc5b1 JL |
1638 | case MID_RESPONSE_RECEIVED: |
1639 | /* result already set, check signature */ | |
38d77c50 | 1640 | if (server->sign) { |
985e4ff0 SF |
1641 | int rc = 0; |
1642 | ||
bf5ea0e2 | 1643 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1644 | mid->sequence_number); |
985e4ff0 | 1645 | if (rc) |
f96637be JP |
1646 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1647 | rc); | |
e28bc5b1 JL |
1648 | } |
1649 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1650 | task_io_account_read(rdata->got_bytes); |
1651 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1652 | break; |
1653 | case MID_REQUEST_SUBMITTED: | |
1654 | case MID_RETRY_NEEDED: | |
1655 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1656 | if (server->sign && rdata->got_bytes) |
1657 | /* reset bytes number since we can not check a sign */ | |
1658 | rdata->got_bytes = 0; | |
1659 | /* FIXME: should this be counted toward the initiating task? */ | |
1660 | task_io_account_read(rdata->got_bytes); | |
1661 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1662 | break; |
1663 | default: | |
1664 | rdata->result = -EIO; | |
1665 | } | |
1666 | ||
da472fc8 | 1667 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1668 | DeleteMidQEntry(mid); |
34f4deb7 | 1669 | add_credits(server, &credits, 0); |
e28bc5b1 JL |
1670 | } |
1671 | ||
1672 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1673 | int | |
1674 | cifs_async_readv(struct cifs_readdata *rdata) | |
1675 | { | |
1676 | int rc; | |
1677 | READ_REQ *smb = NULL; | |
1678 | int wct; | |
1679 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1680 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1681 | .rq_nvec = 2 }; | |
e28bc5b1 | 1682 | |
f96637be JP |
1683 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1684 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1685 | |
1686 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1687 | wct = 12; | |
1688 | else { | |
1689 | wct = 10; /* old style read */ | |
1690 | if ((rdata->offset >> 32) > 0) { | |
1691 | /* can not handle this big offset for old */ | |
1692 | return -EIO; | |
1693 | } | |
1694 | } | |
1695 | ||
1696 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1697 | if (rc) | |
1698 | return rc; | |
1699 | ||
1700 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1701 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1702 | ||
1703 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1704 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1705 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1706 | if (wct == 12) | |
1707 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1708 | smb->Remaining = 0; | |
1709 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1710 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1711 | if (wct == 12) | |
1712 | smb->ByteCount = 0; | |
1713 | else { | |
1714 | /* old style read */ | |
1715 | struct smb_com_readx_req *smbr = | |
1716 | (struct smb_com_readx_req *)smb; | |
1717 | smbr->ByteCount = 0; | |
1718 | } | |
1719 | ||
1720 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1721 | rdata->iov[0].iov_base = smb; |
1722 | rdata->iov[0].iov_len = 4; | |
1723 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1724 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1725 | |
6993f74a | 1726 | kref_get(&rdata->refcount); |
fec344e3 | 1727 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
3349c3a7 | 1728 | cifs_readv_callback, NULL, rdata, 0, NULL); |
e28bc5b1 JL |
1729 | |
1730 | if (rc == 0) | |
44c58186 | 1731 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1732 | else |
1733 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1734 | |
1735 | cifs_small_buf_release(smb); | |
1736 | return rc; | |
1737 | } | |
1738 | ||
1da177e4 | 1739 | int |
6d5786a3 PS |
1740 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1741 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1742 | { |
1743 | int rc = -EACCES; | |
1744 | READ_REQ *pSMB = NULL; | |
1745 | READ_RSP *pSMBr = NULL; | |
1746 | char *pReadData = NULL; | |
bfa0d75a | 1747 | int wct; |
ec637e3f SF |
1748 | int resp_buf_type = 0; |
1749 | struct kvec iov[1]; | |
da502f7d | 1750 | struct kvec rsp_iov; |
d4ffff1f PS |
1751 | __u32 pid = io_parms->pid; |
1752 | __u16 netfid = io_parms->netfid; | |
1753 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1754 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1755 | unsigned int count = io_parms->length; |
1da177e4 | 1756 | |
f96637be | 1757 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1758 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1759 | wct = 12; |
4c3130ef | 1760 | else { |
bfa0d75a | 1761 | wct = 10; /* old style read */ |
d4ffff1f | 1762 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1763 | /* can not handle this big offset for old */ |
1764 | return -EIO; | |
1765 | } | |
1766 | } | |
1da177e4 LT |
1767 | |
1768 | *nbytes = 0; | |
ec637e3f | 1769 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1770 | if (rc) |
1771 | return rc; | |
1772 | ||
d4ffff1f PS |
1773 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1774 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1775 | ||
1da177e4 LT |
1776 | /* tcon and ses pointer are checked in smb_init */ |
1777 | if (tcon->ses->server == NULL) | |
1778 | return -ECONNABORTED; | |
1779 | ||
ec637e3f | 1780 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1781 | pSMB->Fid = netfid; |
d4ffff1f | 1782 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1783 | if (wct == 12) |
d4ffff1f | 1784 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1785 | |
1da177e4 LT |
1786 | pSMB->Remaining = 0; |
1787 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1788 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1789 | if (wct == 12) |
bfa0d75a SF |
1790 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1791 | else { | |
1792 | /* old style read */ | |
50c2f753 | 1793 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1794 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1795 | pSMBW->ByteCount = 0; |
bfa0d75a | 1796 | } |
ec637e3f SF |
1797 | |
1798 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1799 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1800 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1801 | CIFS_LOG_ERROR, &rsp_iov); | |
1802 | cifs_small_buf_release(pSMB); | |
44c58186 | 1803 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1804 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1805 | if (rc) { |
f96637be | 1806 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1807 | } else { |
1808 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1809 | data_length = data_length << 16; | |
1810 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1811 | *nbytes = data_length; | |
1812 | ||
1813 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1814 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1815 | || (data_length > count)) { |
f96637be | 1816 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1817 | data_length, count); |
1da177e4 LT |
1818 | rc = -EIO; |
1819 | *nbytes = 0; | |
1820 | } else { | |
ec637e3f | 1821 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1822 | le16_to_cpu(pSMBr->DataOffset); |
1823 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1824 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1825 | rc = -EFAULT; |
26f57364 | 1826 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1827 | if (*buf) |
50c2f753 | 1828 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1829 | } |
1830 | } | |
1da177e4 | 1831 | |
790fe579 | 1832 | if (*buf) { |
da502f7d | 1833 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1834 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1835 | /* return buffer to caller to free */ |
da502f7d | 1836 | *buf = rsp_iov.iov_base; |
790fe579 | 1837 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1838 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1839 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1840 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1841 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1842 | |
1843 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1844 | since file handle passed in no longer valid */ |
1845 | return rc; | |
1846 | } | |
1847 | ||
ec637e3f | 1848 | |
1da177e4 | 1849 | int |
6d5786a3 | 1850 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1851 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1852 | { |
1853 | int rc = -EACCES; | |
1854 | WRITE_REQ *pSMB = NULL; | |
1855 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1856 | int bytes_returned, wct; |
1da177e4 LT |
1857 | __u32 bytes_sent; |
1858 | __u16 byte_count; | |
fa2989f4 PS |
1859 | __u32 pid = io_parms->pid; |
1860 | __u16 netfid = io_parms->netfid; | |
1861 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1862 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1863 | unsigned int count = io_parms->length; |
1da177e4 | 1864 | |
a24e2d7d SF |
1865 | *nbytes = 0; |
1866 | ||
f96637be | 1867 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1868 | if (tcon->ses == NULL) |
1c955187 SF |
1869 | return -ECONNABORTED; |
1870 | ||
790fe579 | 1871 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1872 | wct = 14; |
4c3130ef | 1873 | else { |
1c955187 | 1874 | wct = 12; |
4c3130ef SF |
1875 | if ((offset >> 32) > 0) { |
1876 | /* can not handle big offset for old srv */ | |
1877 | return -EIO; | |
1878 | } | |
1879 | } | |
1c955187 SF |
1880 | |
1881 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1882 | (void **) &pSMBr); |
1883 | if (rc) | |
1884 | return rc; | |
fa2989f4 PS |
1885 | |
1886 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1887 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1888 | ||
1da177e4 LT |
1889 | /* tcon and ses pointer are checked in smb_init */ |
1890 | if (tcon->ses->server == NULL) | |
1891 | return -ECONNABORTED; | |
1892 | ||
1893 | pSMB->AndXCommand = 0xFF; /* none */ | |
1894 | pSMB->Fid = netfid; | |
1895 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1896 | if (wct == 14) |
1c955187 | 1897 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1898 | |
1da177e4 LT |
1899 | pSMB->Reserved = 0xFFFFFFFF; |
1900 | pSMB->WriteMode = 0; | |
1901 | pSMB->Remaining = 0; | |
1902 | ||
50c2f753 | 1903 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1904 | can send more if LARGE_WRITE_X capability returned by the server and if |
1905 | our buffer is big enough or if we convert to iovecs on socket writes | |
1906 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1907 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1908 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1909 | } else { | |
1910 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1911 | & ~0xFF; | |
1912 | } | |
1913 | ||
1914 | if (bytes_sent > count) | |
1915 | bytes_sent = count; | |
1916 | pSMB->DataOffset = | |
50c2f753 | 1917 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1918 | if (buf) |
61e74801 | 1919 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1920 | else if (count != 0) { |
1da177e4 LT |
1921 | /* No buffer */ |
1922 | cifs_buf_release(pSMB); | |
1923 | return -EINVAL; | |
e30dcf3a | 1924 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1925 | if (wct == 14) |
e30dcf3a | 1926 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1927 | else /* wct == 12 */ |
e30dcf3a | 1928 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1929 | |
1da177e4 LT |
1930 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1931 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1932 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1933 | |
790fe579 | 1934 | if (wct == 14) |
1c955187 | 1935 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1936 | else { /* old style write has byte count 4 bytes earlier |
1937 | so 4 bytes pad */ | |
1938 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1939 | (struct smb_com_writex_req *)pSMB; |
1940 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1941 | } | |
1da177e4 LT |
1942 | |
1943 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1944 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1945 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1946 | if (rc) { |
f96637be | 1947 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1948 | } else { |
1949 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1950 | *nbytes = (*nbytes) << 16; | |
1951 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1952 | |
1953 | /* | |
1954 | * Mask off high 16 bits when bytes written as returned by the | |
1955 | * server is greater than bytes requested by the client. Some | |
1956 | * OS/2 servers are known to set incorrect CountHigh values. | |
1957 | */ | |
1958 | if (*nbytes > count) | |
1959 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1960 | } |
1961 | ||
1962 | cifs_buf_release(pSMB); | |
1963 | ||
50c2f753 | 1964 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1965 | since file handle passed in no longer valid */ |
1966 | ||
1967 | return rc; | |
1968 | } | |
1969 | ||
c28c89fc JL |
1970 | void |
1971 | cifs_writedata_release(struct kref *refcount) | |
1972 | { | |
1973 | struct cifs_writedata *wdata = container_of(refcount, | |
1974 | struct cifs_writedata, refcount); | |
db223a59 LL |
1975 | #ifdef CONFIG_CIFS_SMB_DIRECT |
1976 | if (wdata->mr) { | |
1977 | smbd_deregister_mr(wdata->mr); | |
1978 | wdata->mr = NULL; | |
1979 | } | |
1980 | #endif | |
c28c89fc JL |
1981 | |
1982 | if (wdata->cfile) | |
1983 | cifsFileInfo_put(wdata->cfile); | |
1984 | ||
8e7360f6 | 1985 | kvfree(wdata->pages); |
c28c89fc JL |
1986 | kfree(wdata); |
1987 | } | |
1988 | ||
1989 | /* | |
1990 | * Write failed with a retryable error. Resend the write request. It's also | |
1991 | * possible that the page was redirtied so re-clean the page. | |
1992 | */ | |
1993 | static void | |
1994 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1995 | { | |
7f6c5008 | 1996 | int i, rc = 0; |
2b0143b5 | 1997 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80 | 1998 | struct TCP_Server_Info *server; |
7f6c5008 | 1999 | unsigned int rest_len; |
c28c89fc | 2000 | |
7f6c5008 PS |
2001 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
2002 | i = 0; | |
2003 | rest_len = wdata->bytes; | |
c28c89fc | 2004 | do { |
7f6c5008 PS |
2005 | struct cifs_writedata *wdata2; |
2006 | unsigned int j, nr_pages, wsize, tailsz, cur_len; | |
2007 | ||
2008 | wsize = server->ops->wp_retry_size(inode); | |
2009 | if (wsize < rest_len) { | |
09cbfeaf | 2010 | nr_pages = wsize / PAGE_SIZE; |
7f6c5008 PS |
2011 | if (!nr_pages) { |
2012 | rc = -ENOTSUPP; | |
2013 | break; | |
2014 | } | |
09cbfeaf KS |
2015 | cur_len = nr_pages * PAGE_SIZE; |
2016 | tailsz = PAGE_SIZE; | |
7f6c5008 | 2017 | } else { |
09cbfeaf | 2018 | nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c5008 | 2019 | cur_len = rest_len; |
09cbfeaf | 2020 | tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c5008 | 2021 | } |
c28c89fc | 2022 | |
7f6c5008 PS |
2023 | wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
2024 | if (!wdata2) { | |
2025 | rc = -ENOMEM; | |
2026 | break; | |
c51bb0ea | 2027 | } |
7f6c5008 PS |
2028 | |
2029 | for (j = 0; j < nr_pages; j++) { | |
2030 | wdata2->pages[j] = wdata->pages[i + j]; | |
2031 | lock_page(wdata2->pages[j]); | |
2032 | clear_page_dirty_for_io(wdata2->pages[j]); | |
2033 | } | |
2034 | ||
2035 | wdata2->sync_mode = wdata->sync_mode; | |
2036 | wdata2->nr_pages = nr_pages; | |
2037 | wdata2->offset = page_offset(wdata2->pages[0]); | |
09cbfeaf | 2038 | wdata2->pagesz = PAGE_SIZE; |
7f6c5008 PS |
2039 | wdata2->tailsz = tailsz; |
2040 | wdata2->bytes = cur_len; | |
2041 | ||
86f740f2 | 2042 | rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY, |
fe768d51 | 2043 | &wdata2->cfile); |
7f6c5008 | 2044 | if (!wdata2->cfile) { |
fe768d51 PS |
2045 | cifs_dbg(VFS, "No writable handle to retry writepages rc=%d\n", |
2046 | rc); | |
2047 | if (!is_retryable_error(rc)) | |
2048 | rc = -EBADF; | |
165df9a0 PS |
2049 | } else { |
2050 | wdata2->pid = wdata2->cfile->pid; | |
2051 | rc = server->ops->async_writev(wdata2, | |
2052 | cifs_writedata_release); | |
7f6c5008 | 2053 | } |
7f6c5008 PS |
2054 | |
2055 | for (j = 0; j < nr_pages; j++) { | |
2056 | unlock_page(wdata2->pages[j]); | |
9a66396f | 2057 | if (rc != 0 && !is_retryable_error(rc)) { |
7f6c5008 PS |
2058 | SetPageError(wdata2->pages[j]); |
2059 | end_page_writeback(wdata2->pages[j]); | |
09cbfeaf | 2060 | put_page(wdata2->pages[j]); |
7f6c5008 PS |
2061 | } |
2062 | } | |
2063 | ||
a4813799 | 2064 | kref_put(&wdata2->refcount, cifs_writedata_release); |
7f6c5008 | 2065 | if (rc) { |
9a66396f | 2066 | if (is_retryable_error(rc)) |
7f6c5008 | 2067 | continue; |
165df9a0 | 2068 | i += nr_pages; |
7f6c5008 PS |
2069 | break; |
2070 | } | |
2071 | ||
2072 | rest_len -= cur_len; | |
2073 | i += nr_pages; | |
2074 | } while (i < wdata->nr_pages); | |
c28c89fc | 2075 | |
165df9a0 PS |
2076 | /* cleanup remaining pages from the original wdata */ |
2077 | for (; i < wdata->nr_pages; i++) { | |
2078 | SetPageError(wdata->pages[i]); | |
2079 | end_page_writeback(wdata->pages[i]); | |
2080 | put_page(wdata->pages[i]); | |
2081 | } | |
2082 | ||
9a66396f PS |
2083 | if (rc != 0 && !is_retryable_error(rc)) |
2084 | mapping_set_error(inode->i_mapping, rc); | |
c28c89fc JL |
2085 | kref_put(&wdata->refcount, cifs_writedata_release); |
2086 | } | |
2087 | ||
c2e87640 | 2088 | void |
c28c89fc JL |
2089 | cifs_writev_complete(struct work_struct *work) |
2090 | { | |
2091 | struct cifs_writedata *wdata = container_of(work, | |
2092 | struct cifs_writedata, work); | |
2b0143b5 | 2093 | struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc JL |
2094 | int i = 0; |
2095 | ||
2096 | if (wdata->result == 0) { | |
597b027f | 2097 | spin_lock(&inode->i_lock); |
c28c89fc | 2098 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2099 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2100 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2101 | wdata->bytes); | |
2102 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2103 | return cifs_writev_requeue(wdata); | |
2104 | ||
2105 | for (i = 0; i < wdata->nr_pages; i++) { | |
2106 | struct page *page = wdata->pages[i]; | |
2107 | if (wdata->result == -EAGAIN) | |
2108 | __set_page_dirty_nobuffers(page); | |
2109 | else if (wdata->result < 0) | |
2110 | SetPageError(page); | |
2111 | end_page_writeback(page); | |
09cbfeaf | 2112 | put_page(page); |
c28c89fc JL |
2113 | } |
2114 | if (wdata->result != -EAGAIN) | |
2115 | mapping_set_error(inode->i_mapping, wdata->result); | |
2116 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2117 | } | |
2118 | ||
2119 | struct cifs_writedata * | |
c2e87640 | 2120 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
8e7360f6 LL |
2121 | { |
2122 | struct page **pages = | |
6396bb22 | 2123 | kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); |
8e7360f6 LL |
2124 | if (pages) |
2125 | return cifs_writedata_direct_alloc(pages, complete); | |
2126 | ||
2127 | return NULL; | |
2128 | } | |
2129 | ||
2130 | struct cifs_writedata * | |
2131 | cifs_writedata_direct_alloc(struct page **pages, work_func_t complete) | |
c28c89fc JL |
2132 | { |
2133 | struct cifs_writedata *wdata; | |
2134 | ||
8e7360f6 | 2135 | wdata = kzalloc(sizeof(*wdata), GFP_NOFS); |
c28c89fc | 2136 | if (wdata != NULL) { |
8e7360f6 | 2137 | wdata->pages = pages; |
c28c89fc | 2138 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2139 | INIT_LIST_HEAD(&wdata->list); |
2140 | init_completion(&wdata->done); | |
2141 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2142 | } |
2143 | return wdata; | |
2144 | } | |
2145 | ||
2146 | /* | |
7c9421e1 | 2147 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2148 | * workqueue completion task. |
2149 | */ | |
2150 | static void | |
2151 | cifs_writev_callback(struct mid_q_entry *mid) | |
2152 | { | |
2153 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2154 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2155 | unsigned int written; |
2156 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
34f4deb7 | 2157 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
c28c89fc | 2158 | |
7c9421e1 | 2159 | switch (mid->mid_state) { |
c28c89fc JL |
2160 | case MID_RESPONSE_RECEIVED: |
2161 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2162 | if (wdata->result != 0) | |
2163 | break; | |
2164 | ||
2165 | written = le16_to_cpu(smb->CountHigh); | |
2166 | written <<= 16; | |
2167 | written += le16_to_cpu(smb->Count); | |
2168 | /* | |
2169 | * Mask off high 16 bits when bytes written as returned | |
2170 | * by the server is greater than bytes requested by the | |
2171 | * client. OS/2 servers are known to set incorrect | |
2172 | * CountHigh values. | |
2173 | */ | |
2174 | if (written > wdata->bytes) | |
2175 | written &= 0xFFFF; | |
2176 | ||
2177 | if (written < wdata->bytes) | |
2178 | wdata->result = -ENOSPC; | |
2179 | else | |
2180 | wdata->bytes = written; | |
2181 | break; | |
2182 | case MID_REQUEST_SUBMITTED: | |
2183 | case MID_RETRY_NEEDED: | |
2184 | wdata->result = -EAGAIN; | |
2185 | break; | |
2186 | default: | |
2187 | wdata->result = -EIO; | |
2188 | break; | |
2189 | } | |
2190 | ||
da472fc8 | 2191 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2192 | DeleteMidQEntry(mid); |
34f4deb7 | 2193 | add_credits(tcon->ses->server, &credits, 0); |
c28c89fc JL |
2194 | } |
2195 | ||
2196 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2197 | int | |
4a5c80d7 SF |
2198 | cifs_async_writev(struct cifs_writedata *wdata, |
2199 | void (*release)(struct kref *kref)) | |
c28c89fc | 2200 | { |
eddb079d | 2201 | int rc = -EACCES; |
c28c89fc JL |
2202 | WRITE_REQ *smb = NULL; |
2203 | int wct; | |
96daf2b0 | 2204 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 2205 | struct kvec iov[2]; |
fec344e3 | 2206 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2207 | |
2208 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2209 | wct = 14; | |
2210 | } else { | |
2211 | wct = 12; | |
2212 | if (wdata->offset >> 32 > 0) { | |
2213 | /* can not handle big offset for old srv */ | |
2214 | return -EIO; | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2219 | if (rc) | |
2220 | goto async_writev_out; | |
2221 | ||
fe5f5d2e JL |
2222 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2223 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2224 | |
c28c89fc | 2225 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2226 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2227 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2228 | if (wct == 14) | |
2229 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2230 | smb->Reserved = 0xFFFFFFFF; | |
2231 | smb->WriteMode = 0; | |
2232 | smb->Remaining = 0; | |
2233 | ||
2234 | smb->DataOffset = | |
2235 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2236 | ||
2237 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
2238 | iov[0].iov_len = 4; |
2239 | iov[0].iov_base = smb; | |
2240 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
2241 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 2242 | |
738f9de5 PS |
2243 | rqst.rq_iov = iov; |
2244 | rqst.rq_nvec = 2; | |
eddb079d | 2245 | rqst.rq_pages = wdata->pages; |
6d3adb23 | 2246 | rqst.rq_offset = wdata->page_offset; |
eddb079d JL |
2247 | rqst.rq_npages = wdata->nr_pages; |
2248 | rqst.rq_pagesz = wdata->pagesz; | |
2249 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 2250 | |
f96637be JP |
2251 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
2252 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
2253 | |
2254 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2255 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2256 | ||
2257 | if (wct == 14) { | |
2258 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2259 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2260 | } else { | |
2261 | /* wct == 12 */ | |
2262 | struct smb_com_writex_req *smbw = | |
2263 | (struct smb_com_writex_req *)smb; | |
2264 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2265 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 2266 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2267 | } |
2268 | ||
2269 | kref_get(&wdata->refcount); | |
fec344e3 | 2270 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
3349c3a7 | 2271 | cifs_writev_callback, NULL, wdata, 0, NULL); |
c28c89fc JL |
2272 | |
2273 | if (rc == 0) | |
44c58186 | 2274 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 2275 | else |
4a5c80d7 | 2276 | kref_put(&wdata->refcount, release); |
c28c89fc | 2277 | |
c28c89fc JL |
2278 | async_writev_out: |
2279 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2280 | return rc; |
2281 | } | |
2282 | ||
d6e04ae6 | 2283 | int |
6d5786a3 | 2284 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2285 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 | 2286 | { |
136a5dc3 | 2287 | int rc; |
1da177e4 | 2288 | WRITE_REQ *pSMB = NULL; |
ec637e3f | 2289 | int wct; |
d6e04ae6 | 2290 | int smb_hdr_len; |
ec637e3f | 2291 | int resp_buf_type = 0; |
fa2989f4 PS |
2292 | __u32 pid = io_parms->pid; |
2293 | __u16 netfid = io_parms->netfid; | |
2294 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2295 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2296 | unsigned int count = io_parms->length; |
da502f7d | 2297 | struct kvec rsp_iov; |
1da177e4 | 2298 | |
fbec9ab9 JL |
2299 | *nbytes = 0; |
2300 | ||
f96637be | 2301 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 2302 | |
4c3130ef | 2303 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2304 | wct = 14; |
4c3130ef | 2305 | } else { |
8cc64c6e | 2306 | wct = 12; |
4c3130ef SF |
2307 | if ((offset >> 32) > 0) { |
2308 | /* can not handle big offset for old srv */ | |
2309 | return -EIO; | |
2310 | } | |
2311 | } | |
8cc64c6e | 2312 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2313 | if (rc) |
2314 | return rc; | |
fa2989f4 PS |
2315 | |
2316 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2317 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2318 | ||
1da177e4 LT |
2319 | /* tcon and ses pointer are checked in smb_init */ |
2320 | if (tcon->ses->server == NULL) | |
2321 | return -ECONNABORTED; | |
2322 | ||
d6e04ae6 | 2323 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2324 | pSMB->Fid = netfid; |
2325 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2326 | if (wct == 14) |
8cc64c6e | 2327 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2328 | pSMB->Reserved = 0xFFFFFFFF; |
2329 | pSMB->WriteMode = 0; | |
2330 | pSMB->Remaining = 0; | |
d6e04ae6 | 2331 | |
1da177e4 | 2332 | pSMB->DataOffset = |
50c2f753 | 2333 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2334 | |
3e84469d SF |
2335 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2336 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2337 | /* header + 1 byte pad */ |
2338 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2339 | if (wct == 14) |
be8e3b00 | 2340 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2341 | else /* wct == 12 */ |
be8e3b00 | 2342 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2343 | if (wct == 14) |
8cc64c6e SF |
2344 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2345 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2346 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2347 | (struct smb_com_writex_req *)pSMB; |
2348 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2349 | } | |
3e84469d | 2350 | iov[0].iov_base = pSMB; |
790fe579 | 2351 | if (wct == 14) |
ec637e3f SF |
2352 | iov[0].iov_len = smb_hdr_len + 4; |
2353 | else /* wct == 12 pad bigger by four bytes */ | |
2354 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2355 | |
da502f7d PS |
2356 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
2357 | &rsp_iov); | |
2358 | cifs_small_buf_release(pSMB); | |
44c58186 | 2359 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2360 | if (rc) { |
f96637be | 2361 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 2362 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2363 | /* presumably this can not happen, but best to be safe */ |
2364 | rc = -EIO; | |
d6e04ae6 | 2365 | } else { |
da502f7d | 2366 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
2367 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2368 | *nbytes = (*nbytes) << 16; | |
2369 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2370 | |
2371 | /* | |
2372 | * Mask off high 16 bits when bytes written as returned by the | |
2373 | * server is greater than bytes requested by the client. OS/2 | |
2374 | * servers are known to set incorrect CountHigh values. | |
2375 | */ | |
2376 | if (*nbytes > count) | |
2377 | *nbytes &= 0xFFFF; | |
50c2f753 | 2378 | } |
1da177e4 | 2379 | |
da502f7d | 2380 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 2381 | |
50c2f753 | 2382 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2383 | since file handle passed in no longer valid */ |
2384 | ||
2385 | return rc; | |
2386 | } | |
d6e04ae6 | 2387 | |
6d5786a3 PS |
2388 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2389 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2390 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2391 | { | |
2392 | int rc = 0; | |
2393 | LOCK_REQ *pSMB = NULL; | |
2394 | struct kvec iov[2]; | |
da502f7d | 2395 | struct kvec rsp_iov; |
9ee305b7 PS |
2396 | int resp_buf_type; |
2397 | __u16 count; | |
2398 | ||
f96637be JP |
2399 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
2400 | num_lock, num_unlock); | |
9ee305b7 PS |
2401 | |
2402 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2403 | if (rc) | |
2404 | return rc; | |
2405 | ||
2406 | pSMB->Timeout = 0; | |
2407 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2408 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2409 | pSMB->LockType = lock_type; | |
2410 | pSMB->AndXCommand = 0xFF; /* none */ | |
2411 | pSMB->Fid = netfid; /* netfid stays le */ | |
2412 | ||
2413 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2414 | inc_rfc1001_len(pSMB, count); | |
2415 | pSMB->ByteCount = cpu_to_le16(count); | |
2416 | ||
2417 | iov[0].iov_base = (char *)pSMB; | |
2418 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2419 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2420 | iov[1].iov_base = (char *)buf; | |
2421 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2422 | ||
44c58186 | 2423 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
392e1c5d RS |
2424 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, |
2425 | CIFS_NO_RSP_BUF, &rsp_iov); | |
da502f7d | 2426 | cifs_small_buf_release(pSMB); |
9ee305b7 | 2427 | if (rc) |
f96637be | 2428 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
2429 | |
2430 | return rc; | |
2431 | } | |
d6e04ae6 | 2432 | |
1da177e4 | 2433 | int |
6d5786a3 | 2434 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2435 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2436 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2437 | const __u32 numLock, const __u8 lockType, |
2438 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2439 | { |
2440 | int rc = 0; | |
2441 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2442 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2443 | int bytes_returned; |
a891f0f8 | 2444 | int flags = 0; |
1da177e4 LT |
2445 | __u16 count; |
2446 | ||
f96637be JP |
2447 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
2448 | (int)waitFlag, numLock); | |
46810cbf SF |
2449 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2450 | ||
1da177e4 LT |
2451 | if (rc) |
2452 | return rc; | |
2453 | ||
790fe579 | 2454 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 | 2455 | /* no response expected */ |
392e1c5d | 2456 | flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP; |
1da177e4 | 2457 | pSMB->Timeout = 0; |
4b18f2a9 | 2458 | } else if (waitFlag) { |
a891f0f8 | 2459 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2460 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2461 | } else { | |
2462 | pSMB->Timeout = 0; | |
2463 | } | |
2464 | ||
2465 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2466 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2467 | pSMB->LockType = lockType; | |
12fed00d | 2468 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2469 | pSMB->AndXCommand = 0xFF; /* none */ |
2470 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2471 | ||
790fe579 | 2472 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2473 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2474 | /* BB where to store pid high? */ |
2475 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2476 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2477 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2478 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2479 | count = sizeof(LOCKING_ANDX_RANGE); | |
2480 | } else { | |
2481 | /* oplock break */ | |
2482 | count = 0; | |
2483 | } | |
be8e3b00 | 2484 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2485 | pSMB->ByteCount = cpu_to_le16(count); |
2486 | ||
da502f7d | 2487 | if (waitFlag) |
7ee1af76 | 2488 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 2489 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 2490 | else |
a891f0f8 | 2491 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 2492 | cifs_small_buf_release(pSMB); |
44c58186 | 2493 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2494 | if (rc) |
f96637be | 2495 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 2496 | |
50c2f753 | 2497 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2498 | since file handle passed in no longer valid */ |
2499 | return rc; | |
2500 | } | |
2501 | ||
08547b03 | 2502 | int |
6d5786a3 | 2503 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2504 | const __u16 smb_file_id, const __u32 netpid, |
2505 | const loff_t start_offset, const __u64 len, | |
2506 | struct file_lock *pLockData, const __u16 lock_type, | |
2507 | const bool waitFlag) | |
08547b03 SF |
2508 | { |
2509 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2510 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2511 | struct cifs_posix_lock *parm_data; |
2512 | int rc = 0; | |
3a5ff61c | 2513 | int timeout = 0; |
08547b03 | 2514 | int bytes_returned = 0; |
133672ef | 2515 | int resp_buf_type = 0; |
08547b03 | 2516 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2517 | struct kvec iov[1]; |
da502f7d | 2518 | struct kvec rsp_iov; |
08547b03 | 2519 | |
f96637be | 2520 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2521 | |
08547b03 SF |
2522 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2523 | ||
2524 | if (rc) | |
2525 | return rc; | |
2526 | ||
2527 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2528 | ||
50c2f753 | 2529 | params = 6; |
08547b03 SF |
2530 | pSMB->MaxSetupCount = 0; |
2531 | pSMB->Reserved = 0; | |
2532 | pSMB->Flags = 0; | |
08547b03 SF |
2533 | pSMB->Reserved2 = 0; |
2534 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2535 | offset = param_offset + params; | |
2536 | ||
08547b03 SF |
2537 | count = sizeof(struct cifs_posix_lock); |
2538 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2539 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2540 | pSMB->SetupCount = 1; |
2541 | pSMB->Reserved3 = 0; | |
c5fd363d | 2542 | if (pLockData) |
08547b03 SF |
2543 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2544 | else | |
2545 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2546 | byte_count = 3 /* pad */ + params + count; | |
2547 | pSMB->DataCount = cpu_to_le16(count); | |
2548 | pSMB->ParameterCount = cpu_to_le16(params); | |
2549 | pSMB->TotalDataCount = pSMB->DataCount; | |
2550 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2551 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2552 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2553 | (((char *) &pSMB->hdr.Protocol) + offset); |
2554 | ||
2555 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2556 | if (waitFlag) { |
133672ef | 2557 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2558 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2559 | pSMB->Timeout = cpu_to_le32(-1); |
2560 | } else | |
2561 | pSMB->Timeout = 0; | |
2562 | ||
4f6bcec9 | 2563 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2564 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2565 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2566 | |
2567 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2568 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2569 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2570 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2571 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2572 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2573 | if (waitFlag) { |
2574 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2575 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2576 | } else { | |
133672ef | 2577 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2578 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2579 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2580 | &resp_buf_type, timeout, &rsp_iov); |
2581 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2582 | } |
da502f7d | 2583 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2584 | |
08547b03 | 2585 | if (rc) { |
f96637be | 2586 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2587 | } else if (pLockData) { |
fc94cdb9 SF |
2588 | /* lock structure can be returned on get */ |
2589 | __u16 data_offset; | |
2590 | __u16 data_count; | |
2591 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2592 | ||
820a803f | 2593 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2594 | rc = -EIO; /* bad smb */ |
2595 | goto plk_err_exit; | |
2596 | } | |
fc94cdb9 SF |
2597 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2598 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2599 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2600 | rc = -EIO; |
2601 | goto plk_err_exit; | |
2602 | } | |
2603 | parm_data = (struct cifs_posix_lock *) | |
2604 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2605 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2606 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2607 | else { |
2608 | if (parm_data->lock_type == | |
bc09d141 | 2609 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2610 | pLockData->fl_type = F_RDLCK; |
2611 | else if (parm_data->lock_type == | |
bc09d141 | 2612 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2613 | pLockData->fl_type = F_WRLCK; |
2614 | ||
5443d130 SF |
2615 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2616 | pLockData->fl_end = pLockData->fl_start + | |
2617 | le64_to_cpu(parm_data->length) - 1; | |
9d5b86ac | 2618 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2619 | } |
08547b03 | 2620 | } |
50c2f753 | 2621 | |
fc94cdb9 | 2622 | plk_err_exit: |
da502f7d | 2623 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2624 | |
08547b03 SF |
2625 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2626 | since file handle passed in no longer valid */ | |
2627 | ||
2628 | return rc; | |
2629 | } | |
2630 | ||
2631 | ||
1da177e4 | 2632 | int |
6d5786a3 | 2633 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2634 | { |
2635 | int rc = 0; | |
2636 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2637 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2638 | |
2639 | /* do not retry on dead session on close */ | |
2640 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2641 | if (rc == -EAGAIN) |
1da177e4 LT |
2642 | return 0; |
2643 | if (rc) | |
2644 | return rc; | |
2645 | ||
1da177e4 | 2646 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2647 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2648 | pSMB->ByteCount = 0; |
792af7b0 | 2649 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2650 | cifs_small_buf_release(pSMB); |
44c58186 | 2651 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2652 | if (rc) { |
790fe579 | 2653 | if (rc != -EINTR) { |
1da177e4 | 2654 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2655 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2656 | } |
2657 | } | |
2658 | ||
1da177e4 | 2659 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2660 | if (rc == -EAGAIN) |
1da177e4 LT |
2661 | rc = 0; |
2662 | ||
2663 | return rc; | |
2664 | } | |
2665 | ||
b298f223 | 2666 | int |
6d5786a3 | 2667 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2668 | { |
2669 | int rc = 0; | |
2670 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2671 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2672 | |
2673 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2674 | if (rc) | |
2675 | return rc; | |
2676 | ||
2677 | pSMB->FileID = (__u16) smb_file_id; | |
2678 | pSMB->ByteCount = 0; | |
792af7b0 | 2679 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2680 | cifs_small_buf_release(pSMB); |
44c58186 | 2681 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2682 | if (rc) |
f96637be | 2683 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2684 | |
2685 | return rc; | |
2686 | } | |
2687 | ||
1da177e4 | 2688 | int |
6d5786a3 | 2689 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2690 | const char *from_name, const char *to_name, |
2691 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2692 | { |
2693 | int rc = 0; | |
2694 | RENAME_REQ *pSMB = NULL; | |
2695 | RENAME_RSP *pSMBr = NULL; | |
2696 | int bytes_returned; | |
2697 | int name_len, name_len2; | |
2698 | __u16 count; | |
2baa2682 | 2699 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2700 | |
f96637be | 2701 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2702 | renameRetry: |
2703 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2704 | (void **) &pSMBr); | |
2705 | if (rc) | |
2706 | return rc; | |
2707 | ||
2708 | pSMB->BufferFormat = 0x04; | |
2709 | pSMB->SearchAttributes = | |
2710 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2711 | ATTR_DIRECTORY); | |
2712 | ||
2713 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2714 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2715 | from_name, PATH_MAX, | |
2716 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2717 | name_len++; /* trailing null */ |
2718 | name_len *= 2; | |
2719 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2720 | /* protocol requires ASCII signature byte on Unicode string */ | |
2721 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2722 | name_len2 = | |
acbbb76a | 2723 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2724 | to_name, PATH_MAX, cifs_sb->local_nls, |
2725 | remap); | |
1da177e4 LT |
2726 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2727 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2728 | } else { |
2729 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
2730 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); | |
1da177e4 | 2731 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
1da177e4 LT |
2732 | name_len2++; /* signature byte */ |
2733 | } | |
2734 | ||
2735 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2736 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2737 | pSMB->ByteCount = cpu_to_le16(count); |
2738 | ||
2739 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2740 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2741 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2742 | if (rc) |
f96637be | 2743 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2744 | |
1da177e4 LT |
2745 | cifs_buf_release(pSMB); |
2746 | ||
2747 | if (rc == -EAGAIN) | |
2748 | goto renameRetry; | |
2749 | ||
2750 | return rc; | |
2751 | } | |
2752 | ||
6d5786a3 | 2753 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2754 | int netfid, const char *target_name, |
50c2f753 | 2755 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2756 | { |
2757 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2758 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2759 | struct set_file_rename *rename_info; |
1da177e4 LT |
2760 | char *data_offset; |
2761 | char dummy_string[30]; | |
2762 | int rc = 0; | |
2763 | int bytes_returned = 0; | |
2764 | int len_of_str; | |
2765 | __u16 params, param_offset, offset, count, byte_count; | |
2766 | ||
f96637be | 2767 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2768 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2769 | (void **) &pSMBr); | |
2770 | if (rc) | |
2771 | return rc; | |
2772 | ||
2773 | params = 6; | |
2774 | pSMB->MaxSetupCount = 0; | |
2775 | pSMB->Reserved = 0; | |
2776 | pSMB->Flags = 0; | |
2777 | pSMB->Timeout = 0; | |
2778 | pSMB->Reserved2 = 0; | |
2779 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2780 | offset = param_offset + params; | |
2781 | ||
2782 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2783 | rename_info = (struct set_file_rename *) data_offset; | |
2784 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2785 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2786 | pSMB->SetupCount = 1; |
2787 | pSMB->Reserved3 = 0; | |
2788 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2789 | byte_count = 3 /* pad */ + params; | |
2790 | pSMB->ParameterCount = cpu_to_le16(params); | |
2791 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2792 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2793 | pSMB->DataOffset = cpu_to_le16(offset); | |
2794 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2795 | rename_info->overwrite = cpu_to_le32(1); | |
2796 | rename_info->root_fid = 0; | |
2797 | /* unicode only call */ | |
790fe579 | 2798 | if (target_name == NULL) { |
50c2f753 | 2799 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2800 | len_of_str = |
2801 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2802 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2803 | } else { |
acbbb76a SF |
2804 | len_of_str = |
2805 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2806 | target_name, PATH_MAX, nls_codepage, |
2807 | remap); | |
1da177e4 LT |
2808 | } |
2809 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2810 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2811 | byte_count += count; |
2812 | pSMB->DataCount = cpu_to_le16(count); | |
2813 | pSMB->TotalDataCount = pSMB->DataCount; | |
2814 | pSMB->Fid = netfid; | |
2815 | pSMB->InformationLevel = | |
2816 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2817 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2818 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2819 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2820 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2821 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2822 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2823 | if (rc) |
f96637be JP |
2824 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2825 | rc); | |
a5a2b489 | 2826 | |
1da177e4 LT |
2827 | cifs_buf_release(pSMB); |
2828 | ||
2829 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2830 | since file handle passed in no longer valid */ | |
2831 | ||
2832 | return rc; | |
2833 | } | |
2834 | ||
2835 | int | |
6d5786a3 PS |
2836 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2837 | const char *fromName, const __u16 target_tid, const char *toName, | |
2838 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2839 | { |
2840 | int rc = 0; | |
2841 | COPY_REQ *pSMB = NULL; | |
2842 | COPY_RSP *pSMBr = NULL; | |
2843 | int bytes_returned; | |
2844 | int name_len, name_len2; | |
2845 | __u16 count; | |
2846 | ||
f96637be | 2847 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2848 | copyRetry: |
2849 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2850 | (void **) &pSMBr); | |
2851 | if (rc) | |
2852 | return rc; | |
2853 | ||
2854 | pSMB->BufferFormat = 0x04; | |
2855 | pSMB->Tid2 = target_tid; | |
2856 | ||
2857 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2858 | ||
2859 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2860 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2861 | fromName, PATH_MAX, nls_codepage, | |
2862 | remap); | |
1da177e4 LT |
2863 | name_len++; /* trailing null */ |
2864 | name_len *= 2; | |
2865 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2866 | /* protocol requires ASCII signature byte on Unicode string */ | |
2867 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2868 | name_len2 = |
acbbb76a SF |
2869 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2870 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2871 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2872 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2873 | } else { |
2874 | name_len = copy_path_name(pSMB->OldFileName, fromName); | |
1da177e4 | 2875 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2876 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName); |
1da177e4 LT |
2877 | name_len2++; /* signature byte */ |
2878 | } | |
2879 | ||
2880 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2881 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2882 | pSMB->ByteCount = cpu_to_le16(count); |
2883 | ||
2884 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2885 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2886 | if (rc) { | |
f96637be JP |
2887 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2888 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2889 | } |
0d817bc0 | 2890 | cifs_buf_release(pSMB); |
1da177e4 LT |
2891 | |
2892 | if (rc == -EAGAIN) | |
2893 | goto copyRetry; | |
2894 | ||
2895 | return rc; | |
2896 | } | |
2897 | ||
2898 | int | |
6d5786a3 | 2899 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2900 | const char *fromName, const char *toName, |
bc8ebdc4 | 2901 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2902 | { |
2903 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2904 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2905 | char *data_offset; | |
2906 | int name_len; | |
2907 | int name_len_target; | |
2908 | int rc = 0; | |
2909 | int bytes_returned = 0; | |
2910 | __u16 params, param_offset, offset, byte_count; | |
2911 | ||
f96637be | 2912 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2913 | createSymLinkRetry: |
2914 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2915 | (void **) &pSMBr); | |
2916 | if (rc) | |
2917 | return rc; | |
2918 | ||
2919 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2920 | name_len = | |
bc8ebdc4 NA |
2921 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2922 | /* find define for this maxpathcomponent */ | |
2923 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2924 | name_len++; /* trailing null */ |
2925 | name_len *= 2; | |
2926 | ||
340625e6 RS |
2927 | } else { |
2928 | name_len = copy_path_name(pSMB->FileName, fromName); | |
1da177e4 LT |
2929 | } |
2930 | params = 6 + name_len; | |
2931 | pSMB->MaxSetupCount = 0; | |
2932 | pSMB->Reserved = 0; | |
2933 | pSMB->Flags = 0; | |
2934 | pSMB->Timeout = 0; | |
2935 | pSMB->Reserved2 = 0; | |
2936 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2937 | InformationLevel) - 4; |
1da177e4 LT |
2938 | offset = param_offset + params; |
2939 | ||
2940 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2941 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2942 | name_len_target = | |
bc8ebdc4 NA |
2943 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2944 | /* find define for this maxpathcomponent */ | |
2945 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2946 | name_len_target++; /* trailing null */ |
2947 | name_len_target *= 2; | |
340625e6 RS |
2948 | } else { |
2949 | name_len_target = copy_path_name(data_offset, toName); | |
1da177e4 LT |
2950 | } |
2951 | ||
2952 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2953 | /* BB find exact max on data count below from sess */ | |
2954 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2955 | pSMB->SetupCount = 1; | |
2956 | pSMB->Reserved3 = 0; | |
2957 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2958 | byte_count = 3 /* pad */ + params + name_len_target; | |
2959 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2960 | pSMB->ParameterCount = cpu_to_le16(params); | |
2961 | pSMB->TotalDataCount = pSMB->DataCount; | |
2962 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2963 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2964 | pSMB->DataOffset = cpu_to_le16(offset); | |
2965 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2966 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2967 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2968 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2969 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2970 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2971 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2972 | if (rc) |
f96637be JP |
2973 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2974 | rc); | |
1da177e4 | 2975 | |
0d817bc0 | 2976 | cifs_buf_release(pSMB); |
1da177e4 LT |
2977 | |
2978 | if (rc == -EAGAIN) | |
2979 | goto createSymLinkRetry; | |
2980 | ||
2981 | return rc; | |
2982 | } | |
2983 | ||
2984 | int | |
6d5786a3 | 2985 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2986 | const char *fromName, const char *toName, |
737b758c | 2987 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2988 | { |
2989 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2990 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2991 | char *data_offset; | |
2992 | int name_len; | |
2993 | int name_len_target; | |
2994 | int rc = 0; | |
2995 | int bytes_returned = 0; | |
2996 | __u16 params, param_offset, offset, byte_count; | |
2997 | ||
f96637be | 2998 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2999 | createHardLinkRetry: |
3000 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3001 | (void **) &pSMBr); | |
3002 | if (rc) | |
3003 | return rc; | |
3004 | ||
3005 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
3006 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
3007 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3008 | name_len++; /* trailing null */ |
3009 | name_len *= 2; | |
3010 | ||
340625e6 RS |
3011 | } else { |
3012 | name_len = copy_path_name(pSMB->FileName, toName); | |
1da177e4 LT |
3013 | } |
3014 | params = 6 + name_len; | |
3015 | pSMB->MaxSetupCount = 0; | |
3016 | pSMB->Reserved = 0; | |
3017 | pSMB->Flags = 0; | |
3018 | pSMB->Timeout = 0; | |
3019 | pSMB->Reserved2 = 0; | |
3020 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3021 | InformationLevel) - 4; |
1da177e4 LT |
3022 | offset = param_offset + params; |
3023 | ||
3024 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
3025 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3026 | name_len_target = | |
acbbb76a SF |
3027 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
3028 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3029 | name_len_target++; /* trailing null */ |
3030 | name_len_target *= 2; | |
340625e6 RS |
3031 | } else { |
3032 | name_len_target = copy_path_name(data_offset, fromName); | |
1da177e4 LT |
3033 | } |
3034 | ||
3035 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3036 | /* BB find exact max on data count below from sess*/ | |
3037 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3038 | pSMB->SetupCount = 1; | |
3039 | pSMB->Reserved3 = 0; | |
3040 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3041 | byte_count = 3 /* pad */ + params + name_len_target; | |
3042 | pSMB->ParameterCount = cpu_to_le16(params); | |
3043 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3044 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
3045 | pSMB->TotalDataCount = pSMB->DataCount; | |
3046 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3047 | pSMB->DataOffset = cpu_to_le16(offset); | |
3048 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
3049 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3050 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3051 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3052 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3053 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3054 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3055 | if (rc) |
f96637be JP |
3056 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
3057 | rc); | |
1da177e4 LT |
3058 | |
3059 | cifs_buf_release(pSMB); | |
3060 | if (rc == -EAGAIN) | |
3061 | goto createHardLinkRetry; | |
3062 | ||
3063 | return rc; | |
3064 | } | |
3065 | ||
3066 | int | |
6d5786a3 | 3067 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
3068 | const char *from_name, const char *to_name, |
3069 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
3070 | { |
3071 | int rc = 0; | |
3072 | NT_RENAME_REQ *pSMB = NULL; | |
3073 | RENAME_RSP *pSMBr = NULL; | |
3074 | int bytes_returned; | |
3075 | int name_len, name_len2; | |
3076 | __u16 count; | |
2baa2682 | 3077 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 3078 | |
f96637be | 3079 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
3080 | winCreateHardLinkRetry: |
3081 | ||
3082 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3083 | (void **) &pSMBr); | |
3084 | if (rc) | |
3085 | return rc; | |
3086 | ||
3087 | pSMB->SearchAttributes = | |
3088 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3089 | ATTR_DIRECTORY); | |
3090 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3091 | pSMB->ClusterCount = 0; | |
3092 | ||
3093 | pSMB->BufferFormat = 0x04; | |
3094 | ||
3095 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3096 | name_len = | |
d6e906f1 SF |
3097 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
3098 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
3099 | name_len++; /* trailing null */ |
3100 | name_len *= 2; | |
fcc7c09d JL |
3101 | |
3102 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3103 | pSMB->OldFileName[name_len] = 0x04; | |
3104 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3105 | name_len2 = |
acbbb76a | 3106 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
3107 | to_name, PATH_MAX, cifs_sb->local_nls, |
3108 | remap); | |
1da177e4 LT |
3109 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3110 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
3111 | } else { |
3112 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
1da177e4 | 3113 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 3114 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
1da177e4 LT |
3115 | name_len2++; /* signature byte */ |
3116 | } | |
3117 | ||
3118 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3119 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3120 | pSMB->ByteCount = cpu_to_le16(count); |
3121 | ||
3122 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3123 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3124 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3125 | if (rc) |
f96637be | 3126 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 3127 | |
1da177e4 LT |
3128 | cifs_buf_release(pSMB); |
3129 | if (rc == -EAGAIN) | |
3130 | goto winCreateHardLinkRetry; | |
3131 | ||
3132 | return rc; | |
3133 | } | |
3134 | ||
3135 | int | |
6d5786a3 | 3136 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3137 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 3138 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3139 | { |
3140 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3141 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3142 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3143 | int rc = 0; | |
3144 | int bytes_returned; | |
3145 | int name_len; | |
3146 | __u16 params, byte_count; | |
460b9696 | 3147 | char *data_start; |
1da177e4 | 3148 | |
f96637be | 3149 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
3150 | |
3151 | querySymLinkRetry: | |
3152 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3153 | (void **) &pSMBr); | |
3154 | if (rc) | |
3155 | return rc; | |
3156 | ||
3157 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3158 | name_len = | |
bc8ebdc4 NA |
3159 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3160 | searchName, PATH_MAX, nls_codepage, | |
3161 | remap); | |
1da177e4 LT |
3162 | name_len++; /* trailing null */ |
3163 | name_len *= 2; | |
340625e6 RS |
3164 | } else { |
3165 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3166 | } |
3167 | ||
3168 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3169 | pSMB->TotalDataCount = 0; | |
3170 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3171 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3172 | pSMB->MaxSetupCount = 0; |
3173 | pSMB->Reserved = 0; | |
3174 | pSMB->Flags = 0; | |
3175 | pSMB->Timeout = 0; | |
3176 | pSMB->Reserved2 = 0; | |
3177 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3178 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3179 | pSMB->DataCount = 0; |
3180 | pSMB->DataOffset = 0; | |
3181 | pSMB->SetupCount = 1; | |
3182 | pSMB->Reserved3 = 0; | |
3183 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3184 | byte_count = params + 1 /* pad */ ; | |
3185 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3186 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3187 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3188 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3189 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3190 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3191 | ||
3192 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3193 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3194 | if (rc) { | |
f96637be | 3195 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
3196 | } else { |
3197 | /* decode response */ | |
3198 | ||
3199 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3200 | /* BB also check enough total bytes returned */ |
820a803f | 3201 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3202 | rc = -EIO; |
1da177e4 | 3203 | else { |
0e0d2cf3 | 3204 | bool is_unicode; |
460b9696 JL |
3205 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3206 | ||
3207 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3208 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3209 | |
0e0d2cf3 SF |
3210 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3211 | is_unicode = true; | |
3212 | else | |
3213 | is_unicode = false; | |
3214 | ||
737b758c | 3215 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3216 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3217 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3218 | if (!*symlinkinfo) |
460b9696 | 3219 | rc = -ENOMEM; |
1da177e4 LT |
3220 | } |
3221 | } | |
3222 | cifs_buf_release(pSMB); | |
3223 | if (rc == -EAGAIN) | |
3224 | goto querySymLinkRetry; | |
3225 | return rc; | |
3226 | } | |
3227 | ||
c52a9554 SF |
3228 | /* |
3229 | * Recent Windows versions now create symlinks more frequently | |
3230 | * and they use the "reparse point" mechanism below. We can of course | |
3231 | * do symlinks nicely to Samba and other servers which support the | |
3232 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3233 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3234 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3235 | * In the interim this code has been moved to its own config option so | |
3236 | * it is not compiled in by default until callers fixed up and more tested. | |
3237 | */ | |
1da177e4 | 3238 | int |
d244bf2d PS |
3239 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
3240 | __u16 fid, char **symlinkinfo, | |
3241 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
3242 | { |
3243 | int rc = 0; | |
3244 | int bytes_returned; | |
50c2f753 SF |
3245 | struct smb_com_transaction_ioctl_req *pSMB; |
3246 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
3247 | bool is_unicode; |
3248 | unsigned int sub_len; | |
3249 | char *sub_start; | |
c31f3307 SF |
3250 | struct reparse_symlink_data *reparse_buf; |
3251 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
3252 | __u32 data_offset, data_count; |
3253 | char *end_of_smb; | |
3254 | ||
3255 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
3256 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3257 | (void **) &pSMBr); | |
3258 | if (rc) | |
3259 | return rc; | |
3260 | ||
3261 | pSMB->TotalParameterCount = 0 ; | |
3262 | pSMB->TotalDataCount = 0; | |
3263 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3264 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3265 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3266 | pSMB->MaxSetupCount = 4; |
3267 | pSMB->Reserved = 0; | |
3268 | pSMB->ParameterOffset = 0; | |
3269 | pSMB->DataCount = 0; | |
3270 | pSMB->DataOffset = 0; | |
3271 | pSMB->SetupCount = 4; | |
3272 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3273 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3274 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3275 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3276 | pSMB->IsRootFlag = 0; | |
3277 | pSMB->Fid = fid; /* file handle always le */ | |
3278 | pSMB->ByteCount = 0; | |
3279 | ||
3280 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3281 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3282 | if (rc) { | |
f96637be | 3283 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
3284 | goto qreparse_out; |
3285 | } | |
3286 | ||
3287 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3288 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3289 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
3290 | /* BB also check enough total bytes returned */ | |
3291 | rc = -EIO; /* bad smb */ | |
3292 | goto qreparse_out; | |
3293 | } | |
3294 | if (!data_count || (data_count > 2048)) { | |
3295 | rc = -EIO; | |
3296 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
3297 | goto qreparse_out; | |
3298 | } | |
3299 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 3300 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
3301 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
3302 | if ((char *)reparse_buf >= end_of_smb) { | |
3303 | rc = -EIO; | |
3304 | goto qreparse_out; | |
1da177e4 | 3305 | } |
c31f3307 SF |
3306 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
3307 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
3308 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
3309 | ||
3310 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
3311 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
3312 | le64_to_cpu(posix_buf->InodeType)); | |
3313 | rc = -EOPNOTSUPP; | |
3314 | goto qreparse_out; | |
3315 | } | |
3316 | is_unicode = true; | |
3317 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
3318 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
3319 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
3320 | rc = -EIO; | |
3321 | goto qreparse_out; | |
3322 | } | |
3323 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
3324 | sub_len, is_unicode, nls_codepage); | |
3325 | goto qreparse_out; | |
3326 | } else if (reparse_buf->ReparseTag != | |
3327 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
3328 | rc = -EOPNOTSUPP; | |
3329 | goto qreparse_out; | |
3330 | } | |
3331 | ||
3332 | /* Reparse tag is NTFS symlink */ | |
3333 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
3334 | reparse_buf->PathBuffer; | |
3335 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
3336 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
3337 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
3338 | rc = -EIO; | |
3339 | goto qreparse_out; | |
3340 | } | |
d244bf2d PS |
3341 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3342 | is_unicode = true; | |
3343 | else | |
3344 | is_unicode = false; | |
989c7e51 | 3345 | |
d244bf2d PS |
3346 | /* BB FIXME investigate remapping reserved chars here */ |
3347 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
3348 | nls_codepage); | |
3349 | if (!*symlinkinfo) | |
3350 | rc = -ENOMEM; | |
1da177e4 | 3351 | qreparse_out: |
4a6d87f1 | 3352 | cifs_buf_release(pSMB); |
1da177e4 | 3353 | |
d244bf2d PS |
3354 | /* |
3355 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3356 | * since file handle passed in no longer valid. | |
3357 | */ | |
1da177e4 LT |
3358 | return rc; |
3359 | } | |
3360 | ||
c7f508a9 SF |
3361 | int |
3362 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
3363 | __u16 fid) | |
3364 | { | |
3365 | int rc = 0; | |
3366 | int bytes_returned; | |
3367 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
3368 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
3369 | ||
3370 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
3371 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
3372 | (void **) &pSMBr); | |
3373 | if (rc) | |
3374 | return rc; | |
3375 | ||
3376 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
3377 | ||
3378 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 3379 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
3380 | pSMB->MaxParameterCount = 0; |
3381 | pSMB->MaxDataCount = 0; | |
3382 | pSMB->MaxSetupCount = 4; | |
3383 | pSMB->Reserved = 0; | |
3384 | pSMB->ParameterOffset = 0; | |
bc09d141 | 3385 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
3386 | pSMB->DataOffset = |
3387 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
3388 | compression_state) - 4); /* 84 */ | |
3389 | pSMB->SetupCount = 4; | |
bc09d141 | 3390 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 3391 | pSMB->ParameterCount = 0; |
bc09d141 | 3392 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
3393 | pSMB->IsFsctl = 1; /* FSCTL */ |
3394 | pSMB->IsRootFlag = 0; | |
3395 | pSMB->Fid = fid; /* file handle always le */ | |
3396 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 3397 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
3398 | inc_rfc1001_len(pSMB, 5); |
3399 | ||
3400 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3401 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3402 | if (rc) | |
3403 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
3404 | ||
3405 | cifs_buf_release(pSMB); | |
3406 | ||
3407 | /* | |
3408 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
3409 | * since file handle passed in no longer valid. | |
3410 | */ | |
3411 | return rc; | |
3412 | } | |
3413 | ||
3414 | ||
1da177e4 LT |
3415 | #ifdef CONFIG_CIFS_POSIX |
3416 | ||
3417 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2211d5ba | 3418 | static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
50c2f753 | 3419 | struct cifs_posix_ace *cifs_ace) |
1da177e4 LT |
3420 | { |
3421 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3422 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3423 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3424 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
f96637be JP |
3425 | /* |
3426 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3427 | ace->e_perm, ace->e_tag, ace->e_id); | |
3428 | */ | |
1da177e4 LT |
3429 | |
3430 | return; | |
3431 | } | |
3432 | ||
3433 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3434 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3435 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3436 | { |
3437 | int size = 0; | |
3438 | int i; | |
3439 | __u16 count; | |
50c2f753 SF |
3440 | struct cifs_posix_ace *pACE; |
3441 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2211d5ba | 3442 | struct posix_acl_xattr_header *local_acl = (void *)trgt; |
1da177e4 LT |
3443 | |
3444 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3445 | return -EOPNOTSUPP; | |
3446 | ||
45987e00 | 3447 | if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4 LT |
3448 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3449 | pACE = &cifs_acl->ace_array[0]; | |
3450 | size = sizeof(struct cifs_posix_acl); | |
3451 | size += sizeof(struct cifs_posix_ace) * count; | |
3452 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3453 | if (size_of_data_area < size) { |
f96637be JP |
3454 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
3455 | size_of_data_area, size); | |
1da177e4 LT |
3456 | return -EINVAL; |
3457 | } | |
45987e00 | 3458 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3459 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3460 | size = sizeof(struct cifs_posix_acl); | |
3461 | size += sizeof(struct cifs_posix_ace) * count; | |
3462 | /* skip past access ACEs to get to default ACEs */ | |
3463 | pACE = &cifs_acl->ace_array[count]; | |
3464 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3465 | size += sizeof(struct cifs_posix_ace) * count; | |
3466 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3467 | if (size_of_data_area < size) |
1da177e4 LT |
3468 | return -EINVAL; |
3469 | } else { | |
3470 | /* illegal type */ | |
3471 | return -EINVAL; | |
3472 | } | |
3473 | ||
3474 | size = posix_acl_xattr_size(count); | |
790fe579 | 3475 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3476 | /* used to query ACL EA size */ |
790fe579 | 3477 | } else if (size > buflen) { |
1da177e4 LT |
3478 | return -ERANGE; |
3479 | } else /* buffer big enough */ { | |
2211d5ba AG |
3480 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
3481 | ||
ff7feac9 | 3482 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 | 3483 | for (i = 0; i < count ; i++) { |
2211d5ba | 3484 | cifs_convert_ace(&ace[i], pACE); |
50c2f753 | 3485 | pACE++; |
1da177e4 LT |
3486 | } |
3487 | } | |
3488 | return size; | |
3489 | } | |
3490 | ||
0aa3a24b | 3491 | static void convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2211d5ba | 3492 | const struct posix_acl_xattr_entry *local_ace) |
1da177e4 | 3493 | { |
ff7feac9 SF |
3494 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3495 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3496 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3497 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3498 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3499 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3500 | } else |
ff7feac9 | 3501 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be JP |
3502 | /* |
3503 | cifs_dbg(FYI, "perm %d tag %d id %d\n", | |
3504 | ace->e_perm, ace->e_tag, ace->e_id); | |
3505 | */ | |
1da177e4 LT |
3506 | } |
3507 | ||
3508 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3509 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3510 | const int buflen, const int acl_type) | |
1da177e4 LT |
3511 | { |
3512 | __u16 rc = 0; | |
50c2f753 | 3513 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2211d5ba | 3514 | struct posix_acl_xattr_header *local_acl = (void *)pACL; |
ae9ebe7c | 3515 | struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
1da177e4 LT |
3516 | int count; |
3517 | int i; | |
3518 | ||
790fe579 | 3519 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3520 | return 0; |
3521 | ||
3522 | count = posix_acl_xattr_count((size_t)buflen); | |
f96637be JP |
3523 | cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
3524 | count, buflen, le32_to_cpu(local_acl->a_version)); | |
790fe579 | 3525 | if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be JP |
3526 | cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
3527 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3528 | return 0; |
3529 | } | |
3530 | cifs_acl->version = cpu_to_le16(1); | |
b1d93356 | 3531 | if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac9 | 3532 | cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141 | 3533 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3534 | } else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac9 | 3535 | cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141 | 3536 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d93356 | 3537 | } else { |
f96637be | 3538 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
1da177e4 LT |
3539 | return 0; |
3540 | } | |
0aa3a24b HK |
3541 | for (i = 0; i < count; i++) |
3542 | convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); | |
790fe579 | 3543 | if (rc == 0) { |
1da177e4 LT |
3544 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3545 | rc += sizeof(struct cifs_posix_acl); | |
3546 | /* BB add check to make sure ACL does not overflow SMB */ | |
3547 | } | |
3548 | return rc; | |
3549 | } | |
3550 | ||
3551 | int | |
6d5786a3 | 3552 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3553 | const unsigned char *searchName, |
3554 | char *acl_inf, const int buflen, const int acl_type, | |
3555 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3556 | { |
3557 | /* SMB_QUERY_POSIX_ACL */ | |
3558 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3559 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3560 | int rc = 0; | |
3561 | int bytes_returned; | |
3562 | int name_len; | |
3563 | __u16 params, byte_count; | |
50c2f753 | 3564 | |
f96637be | 3565 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
1da177e4 LT |
3566 | |
3567 | queryAclRetry: | |
3568 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3569 | (void **) &pSMBr); | |
3570 | if (rc) | |
3571 | return rc; | |
50c2f753 | 3572 | |
1da177e4 LT |
3573 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3574 | name_len = | |
acbbb76a SF |
3575 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3576 | searchName, PATH_MAX, nls_codepage, | |
3577 | remap); | |
1da177e4 LT |
3578 | name_len++; /* trailing null */ |
3579 | name_len *= 2; | |
3580 | pSMB->FileName[name_len] = 0; | |
3581 | pSMB->FileName[name_len+1] = 0; | |
340625e6 RS |
3582 | } else { |
3583 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3584 | } |
3585 | ||
3586 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3587 | pSMB->TotalDataCount = 0; | |
3588 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3589 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3590 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3591 | pSMB->MaxSetupCount = 0; | |
3592 | pSMB->Reserved = 0; | |
3593 | pSMB->Flags = 0; | |
3594 | pSMB->Timeout = 0; | |
3595 | pSMB->Reserved2 = 0; | |
3596 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3597 | offsetof(struct smb_com_transaction2_qpi_req, |
3598 | InformationLevel) - 4); | |
1da177e4 LT |
3599 | pSMB->DataCount = 0; |
3600 | pSMB->DataOffset = 0; | |
3601 | pSMB->SetupCount = 1; | |
3602 | pSMB->Reserved3 = 0; | |
3603 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3604 | byte_count = params + 1 /* pad */ ; | |
3605 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3606 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3607 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3608 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3609 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3610 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3611 | ||
3612 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3613 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3614 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3615 | if (rc) { |
f96637be | 3616 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
1da177e4 LT |
3617 | } else { |
3618 | /* decode response */ | |
50c2f753 | 3619 | |
1da177e4 | 3620 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3621 | /* BB also check enough total bytes returned */ |
820a803f | 3622 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3623 | rc = -EIO; /* bad smb */ |
3624 | else { | |
3625 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3626 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3627 | rc = cifs_copy_posix_acl(acl_inf, | |
3628 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3629 | buflen, acl_type, count); |
1da177e4 LT |
3630 | } |
3631 | } | |
3632 | cifs_buf_release(pSMB); | |
3633 | if (rc == -EAGAIN) | |
3634 | goto queryAclRetry; | |
3635 | return rc; | |
3636 | } | |
3637 | ||
3638 | int | |
6d5786a3 | 3639 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3640 | const unsigned char *fileName, |
3641 | const char *local_acl, const int buflen, | |
3642 | const int acl_type, | |
3643 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3644 | { |
3645 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3646 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3647 | char *parm_data; | |
3648 | int name_len; | |
3649 | int rc = 0; | |
3650 | int bytes_returned = 0; | |
3651 | __u16 params, byte_count, data_count, param_offset, offset; | |
3652 | ||
f96637be | 3653 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
1da177e4 LT |
3654 | setAclRetry: |
3655 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3656 | (void **) &pSMBr); |
1da177e4 LT |
3657 | if (rc) |
3658 | return rc; | |
3659 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3660 | name_len = | |
acbbb76a SF |
3661 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3662 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3663 | name_len++; /* trailing null */ |
3664 | name_len *= 2; | |
340625e6 RS |
3665 | } else { |
3666 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
3667 | } |
3668 | params = 6 + name_len; | |
3669 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3670 | /* BB find max SMB size from sess */ |
3671 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3672 | pSMB->MaxSetupCount = 0; |
3673 | pSMB->Reserved = 0; | |
3674 | pSMB->Flags = 0; | |
3675 | pSMB->Timeout = 0; | |
3676 | pSMB->Reserved2 = 0; | |
3677 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3678 | InformationLevel) - 4; |
1da177e4 LT |
3679 | offset = param_offset + params; |
3680 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3681 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3682 | ||
3683 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3684 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3685 | |
790fe579 | 3686 | if (data_count == 0) { |
1da177e4 LT |
3687 | rc = -EOPNOTSUPP; |
3688 | goto setACLerrorExit; | |
3689 | } | |
3690 | pSMB->DataOffset = cpu_to_le16(offset); | |
3691 | pSMB->SetupCount = 1; | |
3692 | pSMB->Reserved3 = 0; | |
3693 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3694 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3695 | byte_count = 3 /* pad */ + params + data_count; | |
3696 | pSMB->DataCount = cpu_to_le16(data_count); | |
3697 | pSMB->TotalDataCount = pSMB->DataCount; | |
3698 | pSMB->ParameterCount = cpu_to_le16(params); | |
3699 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3700 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3701 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3702 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3703 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3704 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3705 | if (rc) |
f96637be | 3706 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
1da177e4 LT |
3707 | |
3708 | setACLerrorExit: | |
3709 | cifs_buf_release(pSMB); | |
3710 | if (rc == -EAGAIN) | |
3711 | goto setAclRetry; | |
3712 | return rc; | |
3713 | } | |
3714 | ||
f654bac2 SF |
3715 | /* BB fix tabs in this function FIXME BB */ |
3716 | int | |
6d5786a3 | 3717 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3718 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3719 | { |
50c2f753 SF |
3720 | int rc = 0; |
3721 | struct smb_t2_qfi_req *pSMB = NULL; | |
3722 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3723 | int bytes_returned; | |
3724 | __u16 params, byte_count; | |
f654bac2 | 3725 | |
f96637be | 3726 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3727 | if (tcon == NULL) |
3728 | return -ENODEV; | |
f654bac2 SF |
3729 | |
3730 | GetExtAttrRetry: | |
790fe579 SF |
3731 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3732 | (void **) &pSMBr); | |
3733 | if (rc) | |
3734 | return rc; | |
f654bac2 | 3735 | |
ad7a2926 | 3736 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3737 | pSMB->t2.TotalDataCount = 0; |
3738 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3739 | /* BB find exact max data count below from sess structure BB */ | |
3740 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3741 | pSMB->t2.MaxSetupCount = 0; | |
3742 | pSMB->t2.Reserved = 0; | |
3743 | pSMB->t2.Flags = 0; | |
3744 | pSMB->t2.Timeout = 0; | |
3745 | pSMB->t2.Reserved2 = 0; | |
3746 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3747 | Fid) - 4); | |
3748 | pSMB->t2.DataCount = 0; | |
3749 | pSMB->t2.DataOffset = 0; | |
3750 | pSMB->t2.SetupCount = 1; | |
3751 | pSMB->t2.Reserved3 = 0; | |
3752 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3753 | byte_count = params + 1 /* pad */ ; | |
3754 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3755 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3756 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3757 | pSMB->Pad = 0; | |
f654bac2 | 3758 | pSMB->Fid = netfid; |
be8e3b00 | 3759 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3760 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3761 | ||
3762 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3763 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3764 | if (rc) { | |
f96637be | 3765 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3766 | } else { |
3767 | /* decode response */ | |
3768 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3769 | /* BB also check enough total bytes returned */ |
820a803f | 3770 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3771 | /* If rc should we check for EOPNOSUPP and |
3772 | disable the srvino flag? or in caller? */ | |
3773 | rc = -EIO; /* bad smb */ | |
3774 | else { | |
3775 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3776 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3777 | struct file_chattr_info *pfinfo; | |
3778 | /* BB Do we need a cast or hash here ? */ | |
3779 | if (count != 16) { | |
a0a3036b | 3780 | cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n"); |
790fe579 SF |
3781 | rc = -EIO; |
3782 | goto GetExtAttrOut; | |
3783 | } | |
3784 | pfinfo = (struct file_chattr_info *) | |
3785 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3786 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3787 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3788 | } |
3789 | } | |
f654bac2 | 3790 | GetExtAttrOut: |
790fe579 SF |
3791 | cifs_buf_release(pSMB); |
3792 | if (rc == -EAGAIN) | |
3793 | goto GetExtAttrRetry; | |
3794 | return rc; | |
f654bac2 SF |
3795 | } |
3796 | ||
f654bac2 | 3797 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3798 | |
79df1bae JL |
3799 | /* |
3800 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3801 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3802 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3803 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3804 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3805 | * by caller | |
3806 | */ | |
3807 | static int | |
3808 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3809 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3810 | void **ret_buf) |
3811 | { | |
3812 | int rc; | |
3813 | __u32 temp_offset; | |
3814 | struct smb_com_ntransact_req *pSMB; | |
3815 | ||
3816 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3817 | (void **)&pSMB); | |
3818 | if (rc) | |
3819 | return rc; | |
3820 | *ret_buf = (void *)pSMB; | |
3821 | pSMB->Reserved = 0; | |
3822 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3823 | pSMB->TotalDataCount = 0; | |
c974befa | 3824 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3825 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3826 | pSMB->DataCount = pSMB->TotalDataCount; | |
3827 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3828 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3829 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3830 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3831 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3832 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3833 | return 0; | |
3834 | } | |
3835 | ||
3836 | static int | |
3837 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3838 | __u32 *pparmlen, __u32 *pdatalen) | |
3839 | { | |
3840 | char *end_of_smb; | |
3841 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3842 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3843 | u16 bcc; |
79df1bae JL |
3844 | |
3845 | *pdatalen = 0; | |
3846 | *pparmlen = 0; | |
3847 | ||
3848 | if (buf == NULL) | |
3849 | return -EINVAL; | |
3850 | ||
3851 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3852 | ||
820a803f JL |
3853 | bcc = get_bcc(&pSMBr->hdr); |
3854 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3855 | (char *)&pSMBr->ByteCount; |
3856 | ||
3857 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3858 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3859 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3860 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3861 | ||
3862 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3863 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3864 | ||
3865 | /* should we also check that parm and data areas do not overlap? */ | |
3866 | if (*ppparm > end_of_smb) { | |
f96637be | 3867 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3868 | return -EINVAL; |
3869 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3870 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3871 | return -EINVAL; |
3872 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3873 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3874 | return -EINVAL; |
3875 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3876 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3877 | *ppdata, data_count, (data_count + *ppdata), | |
3878 | end_of_smb, pSMBr); | |
79df1bae | 3879 | return -EINVAL; |
820a803f | 3880 | } else if (parm_count + data_count > bcc) { |
f96637be | 3881 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3882 | return -EINVAL; |
3883 | } | |
3884 | *pdatalen = data_count; | |
3885 | *pparmlen = parm_count; | |
3886 | return 0; | |
3887 | } | |
3888 | ||
0a4b92c0 SF |
3889 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3890 | int | |
6d5786a3 | 3891 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3892 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3893 | { |
3894 | int rc = 0; | |
3895 | int buf_type = 0; | |
ad7a2926 | 3896 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3897 | struct kvec iov[1]; |
da502f7d | 3898 | struct kvec rsp_iov; |
0a4b92c0 | 3899 | |
f96637be | 3900 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3901 | |
630f3f0c SF |
3902 | *pbuflen = 0; |
3903 | *acl_inf = NULL; | |
3904 | ||
b9c7a2bb | 3905 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3906 | 8 /* parm len */, tcon, (void **) &pSMB); |
3907 | if (rc) | |
3908 | return rc; | |
3909 | ||
3910 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3911 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3912 | pSMB->MaxSetupCount = 0; | |
3913 | pSMB->Fid = fid; /* file handle always le */ | |
3914 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3915 | CIFS_ACL_DACL); | |
3916 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3917 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3918 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3919 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3920 | |
a761ac57 | 3921 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3922 | 0, &rsp_iov); |
3923 | cifs_small_buf_release(pSMB); | |
44c58186 | 3924 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3925 | if (rc) { |
f96637be | 3926 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3927 | } else { /* decode response */ |
ad7a2926 | 3928 | __le32 *parm; |
630f3f0c SF |
3929 | __u32 parm_len; |
3930 | __u32 acl_len; | |
50c2f753 | 3931 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3932 | char *pdata; |
0a4b92c0 SF |
3933 | |
3934 | /* validate_nttransact */ | |
da502f7d | 3935 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3936 | &pdata, &parm_len, pbuflen); |
790fe579 | 3937 | if (rc) |
0a4b92c0 | 3938 | goto qsec_out; |
da502f7d | 3939 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3940 | |
f96637be JP |
3941 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3942 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3943 | |
3944 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3945 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3946 | *pbuflen = 0; |
0a4b92c0 SF |
3947 | goto qsec_out; |
3948 | } | |
3949 | ||
3950 | /* BB check that data area is minimum length and as big as acl_len */ | |
3951 | ||
af6f4612 | 3952 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3953 | if (acl_len != *pbuflen) { |
f96637be JP |
3954 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3955 | acl_len, *pbuflen); | |
630f3f0c SF |
3956 | if (*pbuflen > acl_len) |
3957 | *pbuflen = acl_len; | |
3958 | } | |
0a4b92c0 | 3959 | |
630f3f0c SF |
3960 | /* check if buffer is big enough for the acl |
3961 | header followed by the smallest SID */ | |
3962 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3963 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3964 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3965 | rc = -EINVAL; |
3966 | *pbuflen = 0; | |
3967 | } else { | |
f7f7c185 | 3968 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3969 | if (*acl_inf == NULL) { |
3970 | *pbuflen = 0; | |
3971 | rc = -ENOMEM; | |
3972 | } | |
630f3f0c | 3973 | } |
0a4b92c0 SF |
3974 | } |
3975 | qsec_out: | |
da502f7d | 3976 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3977 | return rc; |
3978 | } | |
97837582 SF |
3979 | |
3980 | int | |
6d5786a3 | 3981 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3982 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3983 | { |
3984 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3985 | int rc = 0; | |
3986 | int bytes_returned = 0; | |
3987 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3988 | void *pSMBr; |
97837582 SF |
3989 | |
3990 | setCifsAclRetry: | |
b2a3ad9c | 3991 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3992 | if (rc) |
b2a3ad9c | 3993 | return rc; |
97837582 SF |
3994 | |
3995 | pSMB->MaxSetupCount = 0; | |
3996 | pSMB->Reserved = 0; | |
3997 | ||
3998 | param_count = 8; | |
3999 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
4000 | data_count = acllen; | |
4001 | data_offset = param_offset + param_count; | |
4002 | byte_count = 3 /* pad */ + param_count; | |
4003 | ||
4004 | pSMB->DataCount = cpu_to_le32(data_count); | |
4005 | pSMB->TotalDataCount = pSMB->DataCount; | |
4006 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
4007 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
4008 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
4009 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
4010 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4011 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
4012 | pSMB->SetupCount = 0; | |
4013 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
4014 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
4015 | ||
4016 | pSMB->Fid = fid; /* file handle always le */ | |
4017 | pSMB->Reserved2 = 0; | |
a5ff3769 | 4018 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
4019 | |
4020 | if (pntsd && acllen) { | |
b2a3ad9c JL |
4021 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
4022 | data_offset, pntsd, acllen); | |
be8e3b00 | 4023 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 4024 | } else |
be8e3b00 | 4025 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
4026 | |
4027 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4028 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4029 | ||
f96637be JP |
4030 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
4031 | bytes_returned, rc); | |
97837582 | 4032 | if (rc) |
f96637be | 4033 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
4034 | cifs_buf_release(pSMB); |
4035 | ||
4036 | if (rc == -EAGAIN) | |
4037 | goto setCifsAclRetry; | |
4038 | ||
4039 | return (rc); | |
4040 | } | |
4041 | ||
0a4b92c0 | 4042 | |
6b8edfe0 SF |
4043 | /* Legacy Query Path Information call for lookup to old servers such |
4044 | as Win9x/WinME */ | |
68889f26 PS |
4045 | int |
4046 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
4047 | const char *search_name, FILE_ALL_INFO *data, | |
4048 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 4049 | { |
ad7a2926 SF |
4050 | QUERY_INFORMATION_REQ *pSMB; |
4051 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
4052 | int rc = 0; |
4053 | int bytes_returned; | |
4054 | int name_len; | |
4055 | ||
f96637be | 4056 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
4057 | QInfRetry: |
4058 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 4059 | (void **) &pSMBr); |
6b8edfe0 SF |
4060 | if (rc) |
4061 | return rc; | |
4062 | ||
4063 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4064 | name_len = | |
acbbb76a | 4065 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 4066 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4067 | remap); |
6b8edfe0 SF |
4068 | name_len++; /* trailing null */ |
4069 | name_len *= 2; | |
50c2f753 | 4070 | } else { |
340625e6 | 4071 | name_len = copy_path_name(pSMB->FileName, search_name); |
6b8edfe0 SF |
4072 | } |
4073 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 4074 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 4075 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
4076 | pSMB->ByteCount = cpu_to_le16(name_len); |
4077 | ||
4078 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 4079 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 4080 | if (rc) { |
f96637be | 4081 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 4082 | } else if (data) { |
95390201 | 4083 | struct timespec64 ts; |
1bd5bbcb | 4084 | __u32 time = le32_to_cpu(pSMBr->last_write_time); |
ad7a2926 SF |
4085 | |
4086 | /* decode response */ | |
1bd5bbcb | 4087 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 4088 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
4089 | ts.tv_nsec = 0; |
4090 | ts.tv_sec = time; | |
4091 | /* decode time fields */ | |
68889f26 PS |
4092 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
4093 | data->LastWriteTime = data->ChangeTime; | |
4094 | data->LastAccessTime = 0; | |
4095 | data->AllocationSize = | |
70ca734a | 4096 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
4097 | data->EndOfFile = data->AllocationSize; |
4098 | data->Attributes = | |
70ca734a | 4099 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
4100 | } else |
4101 | rc = -EIO; /* bad buffer passed in */ | |
4102 | ||
4103 | cifs_buf_release(pSMB); | |
4104 | ||
4105 | if (rc == -EAGAIN) | |
4106 | goto QInfRetry; | |
4107 | ||
4108 | return rc; | |
4109 | } | |
4110 | ||
bcd5357f | 4111 | int |
6d5786a3 | 4112 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4113 | u16 netfid, FILE_ALL_INFO *pFindData) |
4114 | { | |
4115 | struct smb_t2_qfi_req *pSMB = NULL; | |
4116 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4117 | int rc = 0; | |
4118 | int bytes_returned; | |
4119 | __u16 params, byte_count; | |
4120 | ||
4121 | QFileInfoRetry: | |
4122 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4123 | (void **) &pSMBr); | |
4124 | if (rc) | |
4125 | return rc; | |
4126 | ||
4127 | params = 2 /* level */ + 2 /* fid */; | |
4128 | pSMB->t2.TotalDataCount = 0; | |
4129 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4130 | /* BB find exact max data count below from sess structure BB */ | |
4131 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4132 | pSMB->t2.MaxSetupCount = 0; | |
4133 | pSMB->t2.Reserved = 0; | |
4134 | pSMB->t2.Flags = 0; | |
4135 | pSMB->t2.Timeout = 0; | |
4136 | pSMB->t2.Reserved2 = 0; | |
4137 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4138 | Fid) - 4); | |
4139 | pSMB->t2.DataCount = 0; | |
4140 | pSMB->t2.DataOffset = 0; | |
4141 | pSMB->t2.SetupCount = 1; | |
4142 | pSMB->t2.Reserved3 = 0; | |
4143 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4144 | byte_count = params + 1 /* pad */ ; | |
4145 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4146 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4147 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4148 | pSMB->Pad = 0; | |
4149 | pSMB->Fid = netfid; | |
be8e3b00 | 4150 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4151 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 4152 | |
bcd5357f JL |
4153 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4154 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4155 | if (rc) { | |
a0a3036b | 4156 | cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc); |
bcd5357f JL |
4157 | } else { /* decode response */ |
4158 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4159 | |
bcd5357f JL |
4160 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4161 | rc = -EIO; | |
820a803f | 4162 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4163 | rc = -EIO; /* bad smb */ |
4164 | else if (pFindData) { | |
4165 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4166 | memcpy((char *) pFindData, | |
4167 | (char *) &pSMBr->hdr.Protocol + | |
4168 | data_offset, sizeof(FILE_ALL_INFO)); | |
4169 | } else | |
4170 | rc = -ENOMEM; | |
4171 | } | |
4172 | cifs_buf_release(pSMB); | |
4173 | if (rc == -EAGAIN) | |
4174 | goto QFileInfoRetry; | |
6b8edfe0 | 4175 | |
bcd5357f JL |
4176 | return rc; |
4177 | } | |
6b8edfe0 | 4178 | |
1da177e4 | 4179 | int |
6d5786a3 | 4180 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 4181 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 4182 | int legacy /* old style infolevel */, |
737b758c | 4183 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 4184 | { |
68889f26 | 4185 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4186 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4187 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4188 | int rc = 0; | |
4189 | int bytes_returned; | |
4190 | int name_len; | |
4191 | __u16 params, byte_count; | |
4192 | ||
f96637be | 4193 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
4194 | QPathInfoRetry: |
4195 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4196 | (void **) &pSMBr); | |
4197 | if (rc) | |
4198 | return rc; | |
4199 | ||
4200 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4201 | name_len = | |
68889f26 | 4202 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4203 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4204 | name_len++; /* trailing null */ |
4205 | name_len *= 2; | |
340625e6 RS |
4206 | } else { |
4207 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4208 | } |
4209 | ||
50c2f753 | 4210 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4211 | pSMB->TotalDataCount = 0; |
4212 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4213 | /* BB find exact max SMB PDU from sess structure BB */ |
4214 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4215 | pSMB->MaxSetupCount = 0; |
4216 | pSMB->Reserved = 0; | |
4217 | pSMB->Flags = 0; | |
4218 | pSMB->Timeout = 0; | |
4219 | pSMB->Reserved2 = 0; | |
4220 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4221 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4222 | pSMB->DataCount = 0; |
4223 | pSMB->DataOffset = 0; | |
4224 | pSMB->SetupCount = 1; | |
4225 | pSMB->Reserved3 = 0; | |
4226 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4227 | byte_count = params + 1 /* pad */ ; | |
4228 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4229 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4230 | if (legacy) |
acf1a1b1 SF |
4231 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4232 | else | |
4233 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4234 | pSMB->Reserved4 = 0; |
be8e3b00 | 4235 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4236 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4237 | ||
4238 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4239 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4240 | if (rc) { | |
f96637be | 4241 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
4242 | } else { /* decode response */ |
4243 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4244 | ||
acf1a1b1 SF |
4245 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4246 | rc = -EIO; | |
820a803f | 4247 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4248 | rc = -EIO; /* bad smb */ |
820a803f | 4249 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4250 | rc = -EIO; /* 24 or 26 expected but we do not read |
4251 | last field */ | |
68889f26 | 4252 | else if (data) { |
acf1a1b1 | 4253 | int size; |
1da177e4 | 4254 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4255 | |
68889f26 PS |
4256 | /* |
4257 | * On legacy responses we do not read the last field, | |
4258 | * EAsize, fortunately since it varies by subdialect and | |
4259 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4260 | * bytes depending but we don't care here. | |
4261 | */ | |
ad7a2926 | 4262 | if (legacy) |
acf1a1b1 SF |
4263 | size = sizeof(FILE_INFO_STANDARD); |
4264 | else | |
4265 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4266 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4267 | data_offset, size); |
1da177e4 LT |
4268 | } else |
4269 | rc = -ENOMEM; | |
4270 | } | |
4271 | cifs_buf_release(pSMB); | |
4272 | if (rc == -EAGAIN) | |
4273 | goto QPathInfoRetry; | |
4274 | ||
4275 | return rc; | |
4276 | } | |
4277 | ||
c8634fd3 | 4278 | int |
6d5786a3 | 4279 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4280 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4281 | { | |
4282 | struct smb_t2_qfi_req *pSMB = NULL; | |
4283 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4284 | int rc = 0; | |
4285 | int bytes_returned; | |
4286 | __u16 params, byte_count; | |
4287 | ||
4288 | UnixQFileInfoRetry: | |
4289 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4290 | (void **) &pSMBr); | |
4291 | if (rc) | |
4292 | return rc; | |
4293 | ||
4294 | params = 2 /* level */ + 2 /* fid */; | |
4295 | pSMB->t2.TotalDataCount = 0; | |
4296 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4297 | /* BB find exact max data count below from sess structure BB */ | |
4298 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4299 | pSMB->t2.MaxSetupCount = 0; | |
4300 | pSMB->t2.Reserved = 0; | |
4301 | pSMB->t2.Flags = 0; | |
4302 | pSMB->t2.Timeout = 0; | |
4303 | pSMB->t2.Reserved2 = 0; | |
4304 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4305 | Fid) - 4); | |
4306 | pSMB->t2.DataCount = 0; | |
4307 | pSMB->t2.DataOffset = 0; | |
4308 | pSMB->t2.SetupCount = 1; | |
4309 | pSMB->t2.Reserved3 = 0; | |
4310 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4311 | byte_count = params + 1 /* pad */ ; | |
4312 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4313 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4314 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4315 | pSMB->Pad = 0; | |
4316 | pSMB->Fid = netfid; | |
be8e3b00 | 4317 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 4318 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
4319 | |
4320 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4321 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4322 | if (rc) { | |
a0a3036b | 4323 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc); |
c8634fd3 JL |
4324 | } else { /* decode response */ |
4325 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4326 | ||
820a803f | 4327 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4328 | 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 |
4329 | rc = -EIO; /* bad smb */ |
4330 | } else { | |
4331 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4332 | memcpy((char *) pFindData, | |
4333 | (char *) &pSMBr->hdr.Protocol + | |
4334 | data_offset, | |
4335 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4336 | } | |
4337 | } | |
4338 | ||
4339 | cifs_buf_release(pSMB); | |
4340 | if (rc == -EAGAIN) | |
4341 | goto UnixQFileInfoRetry; | |
4342 | ||
4343 | return rc; | |
4344 | } | |
4345 | ||
1da177e4 | 4346 | int |
6d5786a3 | 4347 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4348 | const unsigned char *searchName, |
582d21e5 | 4349 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4350 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4351 | { |
4352 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4353 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4354 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4355 | int rc = 0; | |
4356 | int bytes_returned = 0; | |
4357 | int name_len; | |
4358 | __u16 params, byte_count; | |
4359 | ||
f96637be | 4360 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
4361 | UnixQPathInfoRetry: |
4362 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4363 | (void **) &pSMBr); | |
4364 | if (rc) | |
4365 | return rc; | |
4366 | ||
4367 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4368 | name_len = | |
acbbb76a SF |
4369 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4370 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4371 | name_len++; /* trailing null */ |
4372 | name_len *= 2; | |
340625e6 RS |
4373 | } else { |
4374 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
4375 | } |
4376 | ||
50c2f753 | 4377 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4378 | pSMB->TotalDataCount = 0; |
4379 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4380 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4381 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4382 | pSMB->MaxSetupCount = 0; |
4383 | pSMB->Reserved = 0; | |
4384 | pSMB->Flags = 0; | |
4385 | pSMB->Timeout = 0; | |
4386 | pSMB->Reserved2 = 0; | |
4387 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4388 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4389 | pSMB->DataCount = 0; |
4390 | pSMB->DataOffset = 0; | |
4391 | pSMB->SetupCount = 1; | |
4392 | pSMB->Reserved3 = 0; | |
4393 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4394 | byte_count = params + 1 /* pad */ ; | |
4395 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4396 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4397 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4398 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4399 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4400 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4401 | ||
4402 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4403 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4404 | if (rc) { | |
a0a3036b | 4405 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc); |
1da177e4 LT |
4406 | } else { /* decode response */ |
4407 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4408 | ||
820a803f | 4409 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 4410 | 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 |
4411 | rc = -EIO; /* bad smb */ |
4412 | } else { | |
4413 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4414 | memcpy((char *) pFindData, | |
4415 | (char *) &pSMBr->hdr.Protocol + | |
4416 | data_offset, | |
630f3f0c | 4417 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4418 | } |
4419 | } | |
4420 | cifs_buf_release(pSMB); | |
4421 | if (rc == -EAGAIN) | |
4422 | goto UnixQPathInfoRetry; | |
4423 | ||
4424 | return rc; | |
4425 | } | |
4426 | ||
1da177e4 LT |
4427 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4428 | int | |
6d5786a3 | 4429 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4430 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4431 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4432 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4433 | { |
4434 | /* level 257 SMB_ */ | |
4435 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4436 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4437 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4438 | int rc = 0; |
4439 | int bytes_returned = 0; | |
c052e2b4 | 4440 | int name_len, remap; |
1da177e4 | 4441 | __u16 params, byte_count; |
c052e2b4 | 4442 | struct nls_table *nls_codepage; |
1da177e4 | 4443 | |
f96637be | 4444 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4445 | |
4446 | findFirstRetry: | |
4447 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4448 | (void **) &pSMBr); | |
4449 | if (rc) | |
4450 | return rc; | |
4451 | ||
c052e2b4 | 4452 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4453 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4454 | |
1da177e4 LT |
4455 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4456 | name_len = | |
acbbb76a SF |
4457 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4458 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4459 | /* We can not add the asterik earlier in case |
4460 | it got remapped to 0xF03A as if it were part of the | |
4461 | directory name instead of a wildcard */ | |
1da177e4 | 4462 | name_len *= 2; |
c052e2b4 SP |
4463 | if (msearch) { |
4464 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4465 | pSMB->FileName[name_len+1] = 0; | |
4466 | pSMB->FileName[name_len+2] = '*'; | |
4467 | pSMB->FileName[name_len+3] = 0; | |
4468 | name_len += 4; /* now the trailing null */ | |
4469 | /* null terminate just in case */ | |
4470 | pSMB->FileName[name_len] = 0; | |
4471 | pSMB->FileName[name_len+1] = 0; | |
4472 | name_len += 2; | |
4473 | } | |
340625e6 RS |
4474 | } else { |
4475 | name_len = copy_path_name(pSMB->FileName, searchName); | |
c052e2b4 | 4476 | if (msearch) { |
340625e6 RS |
4477 | if (WARN_ON_ONCE(name_len > PATH_MAX-2)) |
4478 | name_len = PATH_MAX-2; | |
4479 | /* overwrite nul byte */ | |
4480 | pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb); | |
4481 | pSMB->FileName[name_len] = '*'; | |
4482 | pSMB->FileName[name_len+1] = 0; | |
4483 | name_len += 2; | |
c052e2b4 | 4484 | } |
1da177e4 LT |
4485 | } |
4486 | ||
4487 | params = 12 + name_len /* includes null */ ; | |
4488 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4489 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4490 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4491 | pSMB->MaxSetupCount = 0; |
4492 | pSMB->Reserved = 0; | |
4493 | pSMB->Flags = 0; | |
4494 | pSMB->Timeout = 0; | |
4495 | pSMB->Reserved2 = 0; | |
4496 | byte_count = params + 1 /* pad */ ; | |
4497 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4498 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4499 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4500 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4501 | - 4); | |
1da177e4 LT |
4502 | pSMB->DataCount = 0; |
4503 | pSMB->DataOffset = 0; | |
4504 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4505 | pSMB->Reserved3 = 0; | |
4506 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4507 | pSMB->SearchAttributes = | |
4508 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4509 | ATTR_DIRECTORY); | |
50c2f753 | 4510 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4511 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4512 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4513 | ||
4514 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4515 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4516 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4517 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4518 | ||
4519 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4520 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4521 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4522 | |
88274815 SF |
4523 | if (rc) {/* BB add logic to retry regular search if Unix search |
4524 | rejected unexpectedly by server */ | |
1da177e4 | 4525 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4526 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4527 | |
88274815 | 4528 | cifs_buf_release(pSMB); |
1da177e4 LT |
4529 | |
4530 | /* BB eventually could optimize out free and realloc of buf */ | |
4531 | /* for this case */ | |
4532 | if (rc == -EAGAIN) | |
4533 | goto findFirstRetry; | |
4534 | } else { /* decode response */ | |
4535 | /* BB remember to free buffer if error BB */ | |
4536 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4537 | if (rc == 0) { |
b77d753c SF |
4538 | unsigned int lnoff; |
4539 | ||
1da177e4 | 4540 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4541 | psrch_inf->unicode = true; |
1da177e4 | 4542 | else |
4b18f2a9 | 4543 | psrch_inf->unicode = false; |
1da177e4 LT |
4544 | |
4545 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
01d1bd76 | 4546 | psrch_inf->smallBuf = false; |
50c2f753 SF |
4547 | psrch_inf->srch_entries_start = |
4548 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4549 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4550 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4551 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4552 | ||
790fe579 | 4553 | if (parms->EndofSearch) |
4b18f2a9 | 4554 | psrch_inf->endOfSearch = true; |
1da177e4 | 4555 | else |
4b18f2a9 | 4556 | psrch_inf->endOfSearch = false; |
1da177e4 | 4557 | |
50c2f753 SF |
4558 | psrch_inf->entries_in_buffer = |
4559 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4560 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4561 | psrch_inf->entries_in_buffer; |
b77d753c | 4562 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4563 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4564 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4565 | psrch_inf->last_entry = NULL; |
4566 | return rc; | |
4567 | } | |
4568 | ||
0752f152 | 4569 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4570 | lnoff; |
4571 | ||
c052e2b4 SP |
4572 | if (pnetfid) |
4573 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4574 | } else { |
4575 | cifs_buf_release(pSMB); | |
4576 | } | |
4577 | } | |
4578 | ||
4579 | return rc; | |
4580 | } | |
4581 | ||
6d5786a3 PS |
4582 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4583 | __u16 searchHandle, __u16 search_flags, | |
4584 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4585 | { |
4586 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4587 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4588 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4589 | char *response_data; |
4590 | int rc = 0; | |
9438fabb JL |
4591 | int bytes_returned; |
4592 | unsigned int name_len; | |
1da177e4 LT |
4593 | __u16 params, byte_count; |
4594 | ||
f96637be | 4595 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4596 | |
4b18f2a9 | 4597 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4598 | return -ENOENT; |
4599 | ||
4600 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4601 | (void **) &pSMBr); | |
4602 | if (rc) | |
4603 | return rc; | |
4604 | ||
50c2f753 | 4605 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4606 | byte_count = 0; |
4607 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4608 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4609 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4610 | pSMB->MaxSetupCount = 0; |
4611 | pSMB->Reserved = 0; | |
4612 | pSMB->Flags = 0; | |
4613 | pSMB->Timeout = 0; | |
4614 | pSMB->Reserved2 = 0; | |
4615 | pSMB->ParameterOffset = cpu_to_le16( | |
4616 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4617 | pSMB->DataCount = 0; | |
4618 | pSMB->DataOffset = 0; | |
4619 | pSMB->SetupCount = 1; | |
4620 | pSMB->Reserved3 = 0; | |
4621 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4622 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4623 | pSMB->SearchCount = | |
630f3f0c | 4624 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4625 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4626 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4627 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4628 | |
4629 | name_len = psrch_inf->resume_name_len; | |
4630 | params += name_len; | |
790fe579 | 4631 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4632 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4633 | byte_count += name_len; | |
ef6724e3 SF |
4634 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4635 | pSMB->ResumeFileName[name_len] = 0; | |
4636 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4637 | } else { |
4638 | rc = -EINVAL; | |
4639 | goto FNext2_err_exit; | |
4640 | } | |
4641 | byte_count = params + 1 /* pad */ ; | |
4642 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4643 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4644 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4645 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4646 | |
1da177e4 LT |
4647 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4648 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4649 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4650 | if (rc) { |
4651 | if (rc == -EBADF) { | |
4b18f2a9 | 4652 | psrch_inf->endOfSearch = true; |
6353450a | 4653 | cifs_buf_release(pSMB); |
50c2f753 | 4654 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4655 | } else |
f96637be | 4656 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4657 | } else { /* decode response */ |
4658 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4659 | |
790fe579 | 4660 | if (rc == 0) { |
b77d753c SF |
4661 | unsigned int lnoff; |
4662 | ||
1da177e4 LT |
4663 | /* BB fixme add lock for file (srch_info) struct here */ |
4664 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4665 | psrch_inf->unicode = true; |
1da177e4 | 4666 | else |
4b18f2a9 | 4667 | psrch_inf->unicode = false; |
1da177e4 LT |
4668 | response_data = (char *) &pSMBr->hdr.Protocol + |
4669 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4670 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4671 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4672 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4673 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4674 | cifs_small_buf_release( |
4675 | psrch_inf->ntwrk_buf_start); | |
4676 | else | |
4677 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4678 | psrch_inf->srch_entries_start = response_data; |
4679 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
01d1bd76 | 4680 | psrch_inf->smallBuf = false; |
790fe579 | 4681 | if (parms->EndofSearch) |
4b18f2a9 | 4682 | psrch_inf->endOfSearch = true; |
1da177e4 | 4683 | else |
4b18f2a9 | 4684 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4685 | psrch_inf->entries_in_buffer = |
4686 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4687 | psrch_inf->index_of_last_entry += |
4688 | psrch_inf->entries_in_buffer; | |
b77d753c | 4689 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4690 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4691 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4692 | psrch_inf->last_entry = NULL; |
4693 | return rc; | |
4694 | } else | |
4695 | psrch_inf->last_entry = | |
4696 | psrch_inf->srch_entries_start + lnoff; | |
4697 | ||
f96637be JP |
4698 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4699 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4700 | |
4701 | /* BB fixme add unlock here */ | |
4702 | } | |
4703 | ||
4704 | } | |
4705 | ||
4706 | /* BB On error, should we leave previous search buf (and count and | |
4707 | last entry fields) intact or free the previous one? */ | |
4708 | ||
4709 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4710 | since file handle passed in no longer valid */ | |
4711 | FNext2_err_exit: | |
4712 | if (rc != 0) | |
4713 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4714 | return rc; |
4715 | } | |
4716 | ||
4717 | int | |
6d5786a3 | 4718 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4719 | const __u16 searchHandle) |
1da177e4 LT |
4720 | { |
4721 | int rc = 0; | |
4722 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4723 | |
f96637be | 4724 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4725 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4726 | ||
4727 | /* no sense returning error if session restarted | |
4728 | as file handle has been closed */ | |
790fe579 | 4729 | if (rc == -EAGAIN) |
1da177e4 LT |
4730 | return 0; |
4731 | if (rc) | |
4732 | return rc; | |
4733 | ||
1da177e4 LT |
4734 | pSMB->FileID = searchHandle; |
4735 | pSMB->ByteCount = 0; | |
792af7b0 | 4736 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4737 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4738 | if (rc) |
f96637be | 4739 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4740 | |
44c58186 | 4741 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4742 | |
4743 | /* Since session is dead, search handle closed on server already */ | |
4744 | if (rc == -EAGAIN) | |
4745 | rc = 0; | |
4746 | ||
4747 | return rc; | |
4748 | } | |
4749 | ||
1da177e4 | 4750 | int |
6d5786a3 | 4751 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4752 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4753 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4754 | { |
4755 | int rc = 0; | |
4756 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4757 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4758 | int name_len, bytes_returned; | |
4759 | __u16 params, byte_count; | |
4760 | ||
f96637be | 4761 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4762 | if (tcon == NULL) |
50c2f753 | 4763 | return -ENODEV; |
1da177e4 LT |
4764 | |
4765 | GetInodeNumberRetry: | |
4766 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4767 | (void **) &pSMBr); |
1da177e4 LT |
4768 | if (rc) |
4769 | return rc; | |
4770 | ||
1da177e4 LT |
4771 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4772 | name_len = | |
acbbb76a | 4773 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4774 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4775 | remap); |
1da177e4 LT |
4776 | name_len++; /* trailing null */ |
4777 | name_len *= 2; | |
340625e6 RS |
4778 | } else { |
4779 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4780 | } |
4781 | ||
4782 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4783 | pSMB->TotalDataCount = 0; | |
4784 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4785 | /* BB find exact max data count below from sess structure BB */ | |
4786 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4787 | pSMB->MaxSetupCount = 0; | |
4788 | pSMB->Reserved = 0; | |
4789 | pSMB->Flags = 0; | |
4790 | pSMB->Timeout = 0; | |
4791 | pSMB->Reserved2 = 0; | |
4792 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4793 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4794 | pSMB->DataCount = 0; |
4795 | pSMB->DataOffset = 0; | |
4796 | pSMB->SetupCount = 1; | |
4797 | pSMB->Reserved3 = 0; | |
4798 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4799 | byte_count = params + 1 /* pad */ ; | |
4800 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4801 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4802 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4803 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4804 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4805 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4806 | ||
4807 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4808 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4809 | if (rc) { | |
f96637be | 4810 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4811 | } else { |
4812 | /* decode response */ | |
4813 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4814 | /* BB also check enough total bytes returned */ |
820a803f | 4815 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4816 | /* If rc should we check for EOPNOSUPP and |
4817 | disable the srvino flag? or in caller? */ | |
4818 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4819 | else { |
1da177e4 LT |
4820 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4821 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4822 | struct file_internal_info *pfinfo; |
1da177e4 | 4823 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4824 | if (count < 8) { |
a0a3036b | 4825 | cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4826 | rc = -EIO; |
4827 | goto GetInodeNumOut; | |
4828 | } | |
4829 | pfinfo = (struct file_internal_info *) | |
4830 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4831 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4832 | } |
4833 | } | |
4834 | GetInodeNumOut: | |
4835 | cifs_buf_release(pSMB); | |
4836 | if (rc == -EAGAIN) | |
4837 | goto GetInodeNumberRetry; | |
4838 | return rc; | |
4839 | } | |
1da177e4 LT |
4840 | |
4841 | int | |
6d5786a3 | 4842 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4843 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4844 | unsigned int *num_of_nodes, |
737b758c | 4845 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4846 | { |
4847 | /* TRANS2_GET_DFS_REFERRAL */ | |
4848 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4849 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4850 | int rc = 0; |
4851 | int bytes_returned; | |
4852 | int name_len; | |
1da177e4 | 4853 | __u16 params, byte_count; |
c2cf07d5 SF |
4854 | *num_of_nodes = 0; |
4855 | *target_nodes = NULL; | |
1da177e4 | 4856 | |
f96637be | 4857 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4858 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4859 | return -ENODEV; |
b327a717 | 4860 | |
1da177e4 | 4861 | getDFSRetry: |
b327a717 | 4862 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4863 | (void **) &pSMBr); |
4864 | if (rc) | |
4865 | return rc; | |
50c2f753 SF |
4866 | |
4867 | /* server pointer checked in called function, | |
1982c344 | 4868 | but should never be null here anyway */ |
88257360 | 4869 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4870 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4871 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4872 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4873 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4874 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4875 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4876 | |
4877 | if (ses->capabilities & CAP_UNICODE) { | |
4878 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4879 | name_len = | |
acbbb76a | 4880 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4881 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4882 | remap); |
1da177e4 LT |
4883 | name_len++; /* trailing null */ |
4884 | name_len *= 2; | |
50c2f753 | 4885 | } else { /* BB improve the check for buffer overruns BB */ |
340625e6 | 4886 | name_len = copy_path_name(pSMB->RequestFileName, search_name); |
1da177e4 LT |
4887 | } |
4888 | ||
65c3b205 | 4889 | if (ses->server->sign) |
38d77c50 | 4890 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4891 | |
50c2f753 | 4892 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4893 | |
1da177e4 LT |
4894 | params = 2 /* level */ + name_len /*includes null */ ; |
4895 | pSMB->TotalDataCount = 0; | |
4896 | pSMB->DataCount = 0; | |
4897 | pSMB->DataOffset = 0; | |
4898 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4899 | /* BB find exact max SMB PDU from sess structure BB */ |
4900 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4901 | pSMB->MaxSetupCount = 0; |
4902 | pSMB->Reserved = 0; | |
4903 | pSMB->Flags = 0; | |
4904 | pSMB->Timeout = 0; | |
4905 | pSMB->Reserved2 = 0; | |
4906 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4907 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4908 | pSMB->SetupCount = 1; |
4909 | pSMB->Reserved3 = 0; | |
4910 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4911 | byte_count = params + 3 /* pad */ ; | |
4912 | pSMB->ParameterCount = cpu_to_le16(params); | |
4913 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4914 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4915 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4916 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4917 | ||
4918 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4919 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4920 | if (rc) { | |
f96637be | 4921 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4922 | goto GetDFSRefExit; |
4923 | } | |
4924 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4925 | |
c2cf07d5 | 4926 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4927 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4928 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4929 | goto GetDFSRefExit; |
4930 | } | |
c2cf07d5 | 4931 | |
f96637be JP |
4932 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4933 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4934 | |
fec4585f | 4935 | /* parse returned result into more usable form */ |
4ecce920 AA |
4936 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4937 | le16_to_cpu(pSMBr->t2.DataCount), | |
4938 | num_of_nodes, target_nodes, nls_codepage, | |
4939 | remap, search_name, | |
284316dd | 4940 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4941 | |
1da177e4 | 4942 | GetDFSRefExit: |
0d817bc0 | 4943 | cifs_buf_release(pSMB); |
1da177e4 LT |
4944 | |
4945 | if (rc == -EAGAIN) | |
4946 | goto getDFSRetry; | |
4947 | ||
4948 | return rc; | |
4949 | } | |
4950 | ||
20962438 SF |
4951 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4952 | int | |
6d5786a3 PS |
4953 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4954 | struct kstatfs *FSData) | |
20962438 SF |
4955 | { |
4956 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4957 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4958 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4959 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4960 | int rc = 0; | |
4961 | int bytes_returned = 0; | |
4962 | __u16 params, byte_count; | |
4963 | ||
f96637be | 4964 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4965 | oldQFSInfoRetry: |
4966 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4967 | (void **) &pSMBr); | |
4968 | if (rc) | |
4969 | return rc; | |
20962438 SF |
4970 | |
4971 | params = 2; /* level */ | |
4972 | pSMB->TotalDataCount = 0; | |
4973 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4974 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4975 | pSMB->MaxSetupCount = 0; | |
4976 | pSMB->Reserved = 0; | |
4977 | pSMB->Flags = 0; | |
4978 | pSMB->Timeout = 0; | |
4979 | pSMB->Reserved2 = 0; | |
4980 | byte_count = params + 1 /* pad */ ; | |
4981 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4982 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4983 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4984 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4985 | pSMB->DataCount = 0; | |
4986 | pSMB->DataOffset = 0; | |
4987 | pSMB->SetupCount = 1; | |
4988 | pSMB->Reserved3 = 0; | |
4989 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4990 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4991 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4992 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4993 | ||
4994 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4995 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4996 | if (rc) { | |
f96637be | 4997 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4998 | } else { /* decode response */ |
4999 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5000 | ||
820a803f | 5001 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
5002 | rc = -EIO; /* bad smb */ |
5003 | else { | |
5004 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 5005 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 5006 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 5007 | |
50c2f753 | 5008 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
5009 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
5010 | FSData->f_bsize = | |
5011 | le16_to_cpu(response_data->BytesPerSector) * | |
5012 | le32_to_cpu(response_data-> | |
5013 | SectorsPerAllocationUnit); | |
5a519bea SF |
5014 | /* |
5015 | * much prefer larger but if server doesn't report | |
5016 | * a valid size than 4K is a reasonable minimum | |
5017 | */ | |
5018 | if (FSData->f_bsize < 512) | |
5019 | FSData->f_bsize = 4096; | |
5020 | ||
20962438 | 5021 | FSData->f_blocks = |
50c2f753 | 5022 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
5023 | FSData->f_bfree = FSData->f_bavail = |
5024 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5025 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5026 | (unsigned long long)FSData->f_blocks, | |
5027 | (unsigned long long)FSData->f_bfree, | |
5028 | FSData->f_bsize); | |
20962438 SF |
5029 | } |
5030 | } | |
5031 | cifs_buf_release(pSMB); | |
5032 | ||
5033 | if (rc == -EAGAIN) | |
5034 | goto oldQFSInfoRetry; | |
5035 | ||
5036 | return rc; | |
5037 | } | |
5038 | ||
1da177e4 | 5039 | int |
6d5786a3 PS |
5040 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
5041 | struct kstatfs *FSData) | |
1da177e4 LT |
5042 | { |
5043 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5044 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5045 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5046 | FILE_SYSTEM_INFO *response_data; | |
5047 | int rc = 0; | |
5048 | int bytes_returned = 0; | |
5049 | __u16 params, byte_count; | |
5050 | ||
f96637be | 5051 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
5052 | QFSInfoRetry: |
5053 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5054 | (void **) &pSMBr); | |
5055 | if (rc) | |
5056 | return rc; | |
5057 | ||
5058 | params = 2; /* level */ | |
5059 | pSMB->TotalDataCount = 0; | |
5060 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5061 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5062 | pSMB->MaxSetupCount = 0; |
5063 | pSMB->Reserved = 0; | |
5064 | pSMB->Flags = 0; | |
5065 | pSMB->Timeout = 0; | |
5066 | pSMB->Reserved2 = 0; | |
5067 | byte_count = params + 1 /* pad */ ; | |
5068 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5069 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5070 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5071 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5072 | pSMB->DataCount = 0; |
5073 | pSMB->DataOffset = 0; | |
5074 | pSMB->SetupCount = 1; | |
5075 | pSMB->Reserved3 = 0; | |
5076 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5077 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5078 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5079 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5080 | ||
5081 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5082 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5083 | if (rc) { | |
f96637be | 5084 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 5085 | } else { /* decode response */ |
50c2f753 | 5086 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5087 | |
820a803f | 5088 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5089 | rc = -EIO; /* bad smb */ |
5090 | else { | |
5091 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5092 | |
5093 | response_data = | |
5094 | (FILE_SYSTEM_INFO | |
5095 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5096 | data_offset); | |
5097 | FSData->f_bsize = | |
5098 | le32_to_cpu(response_data->BytesPerSector) * | |
5099 | le32_to_cpu(response_data-> | |
5100 | SectorsPerAllocationUnit); | |
5a519bea SF |
5101 | /* |
5102 | * much prefer larger but if server doesn't report | |
5103 | * a valid size than 4K is a reasonable minimum | |
5104 | */ | |
5105 | if (FSData->f_bsize < 512) | |
5106 | FSData->f_bsize = 4096; | |
5107 | ||
1da177e4 LT |
5108 | FSData->f_blocks = |
5109 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5110 | FSData->f_bfree = FSData->f_bavail = | |
5111 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
5112 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
5113 | (unsigned long long)FSData->f_blocks, | |
5114 | (unsigned long long)FSData->f_bfree, | |
5115 | FSData->f_bsize); | |
1da177e4 LT |
5116 | } |
5117 | } | |
5118 | cifs_buf_release(pSMB); | |
5119 | ||
5120 | if (rc == -EAGAIN) | |
5121 | goto QFSInfoRetry; | |
5122 | ||
5123 | return rc; | |
5124 | } | |
5125 | ||
5126 | int | |
6d5786a3 | 5127 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5128 | { |
5129 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5130 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5131 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5132 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5133 | int rc = 0; | |
5134 | int bytes_returned = 0; | |
5135 | __u16 params, byte_count; | |
5136 | ||
f96637be | 5137 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
5138 | QFSAttributeRetry: |
5139 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5140 | (void **) &pSMBr); | |
5141 | if (rc) | |
5142 | return rc; | |
5143 | ||
5144 | params = 2; /* level */ | |
5145 | pSMB->TotalDataCount = 0; | |
5146 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5147 | /* BB find exact max SMB PDU from sess structure BB */ |
5148 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5149 | pSMB->MaxSetupCount = 0; |
5150 | pSMB->Reserved = 0; | |
5151 | pSMB->Flags = 0; | |
5152 | pSMB->Timeout = 0; | |
5153 | pSMB->Reserved2 = 0; | |
5154 | byte_count = params + 1 /* pad */ ; | |
5155 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5156 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5157 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5158 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5159 | pSMB->DataCount = 0; |
5160 | pSMB->DataOffset = 0; | |
5161 | pSMB->SetupCount = 1; | |
5162 | pSMB->Reserved3 = 0; | |
5163 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5164 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5165 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5166 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5167 | ||
5168 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5169 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5170 | if (rc) { | |
f96637be | 5171 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
5172 | } else { /* decode response */ |
5173 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5174 | ||
820a803f | 5175 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5176 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5177 | rc = -EIO; /* bad smb */ |
5178 | } else { | |
5179 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5180 | response_data = | |
5181 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5182 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5183 | data_offset); | |
5184 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5185 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5186 | } |
5187 | } | |
5188 | cifs_buf_release(pSMB); | |
5189 | ||
5190 | if (rc == -EAGAIN) | |
5191 | goto QFSAttributeRetry; | |
5192 | ||
5193 | return rc; | |
5194 | } | |
5195 | ||
5196 | int | |
6d5786a3 | 5197 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5198 | { |
5199 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5200 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5201 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5202 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5203 | int rc = 0; | |
5204 | int bytes_returned = 0; | |
5205 | __u16 params, byte_count; | |
5206 | ||
f96637be | 5207 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
5208 | QFSDeviceRetry: |
5209 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5210 | (void **) &pSMBr); | |
5211 | if (rc) | |
5212 | return rc; | |
5213 | ||
5214 | params = 2; /* level */ | |
5215 | pSMB->TotalDataCount = 0; | |
5216 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5217 | /* BB find exact max SMB PDU from sess structure BB */ |
5218 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5219 | pSMB->MaxSetupCount = 0; |
5220 | pSMB->Reserved = 0; | |
5221 | pSMB->Flags = 0; | |
5222 | pSMB->Timeout = 0; | |
5223 | pSMB->Reserved2 = 0; | |
5224 | byte_count = params + 1 /* pad */ ; | |
5225 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5226 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5227 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5228 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5229 | |
5230 | pSMB->DataCount = 0; | |
5231 | pSMB->DataOffset = 0; | |
5232 | pSMB->SetupCount = 1; | |
5233 | pSMB->Reserved3 = 0; | |
5234 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5235 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5236 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5237 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5238 | ||
5239 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5240 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5241 | if (rc) { | |
f96637be | 5242 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
5243 | } else { /* decode response */ |
5244 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5245 | ||
820a803f JL |
5246 | if (rc || get_bcc(&pSMBr->hdr) < |
5247 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5248 | rc = -EIO; /* bad smb */ |
5249 | else { | |
5250 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5251 | response_data = | |
737b758c SF |
5252 | (FILE_SYSTEM_DEVICE_INFO *) |
5253 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5254 | data_offset); |
5255 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5256 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5257 | } |
5258 | } | |
5259 | cifs_buf_release(pSMB); | |
5260 | ||
5261 | if (rc == -EAGAIN) | |
5262 | goto QFSDeviceRetry; | |
5263 | ||
5264 | return rc; | |
5265 | } | |
5266 | ||
5267 | int | |
6d5786a3 | 5268 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5269 | { |
5270 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5271 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5272 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5273 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5274 | int rc = 0; | |
5275 | int bytes_returned = 0; | |
5276 | __u16 params, byte_count; | |
5277 | ||
f96637be | 5278 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 5279 | QFSUnixRetry: |
f569599a JL |
5280 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5281 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5282 | if (rc) |
5283 | return rc; | |
5284 | ||
5285 | params = 2; /* level */ | |
5286 | pSMB->TotalDataCount = 0; | |
5287 | pSMB->DataCount = 0; | |
5288 | pSMB->DataOffset = 0; | |
5289 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5290 | /* BB find exact max SMB PDU from sess structure BB */ |
5291 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5292 | pSMB->MaxSetupCount = 0; |
5293 | pSMB->Reserved = 0; | |
5294 | pSMB->Flags = 0; | |
5295 | pSMB->Timeout = 0; | |
5296 | pSMB->Reserved2 = 0; | |
5297 | byte_count = params + 1 /* pad */ ; | |
5298 | pSMB->ParameterCount = cpu_to_le16(params); | |
5299 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5300 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5301 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5302 | pSMB->SetupCount = 1; |
5303 | pSMB->Reserved3 = 0; | |
5304 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5305 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5306 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5307 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5308 | ||
5309 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5310 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5311 | if (rc) { | |
f96637be | 5312 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5313 | } else { /* decode response */ |
5314 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5315 | ||
820a803f | 5316 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5317 | rc = -EIO; /* bad smb */ |
5318 | } else { | |
5319 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5320 | response_data = | |
5321 | (FILE_SYSTEM_UNIX_INFO | |
5322 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5323 | data_offset); | |
5324 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5325 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5326 | } |
5327 | } | |
5328 | cifs_buf_release(pSMB); | |
5329 | ||
5330 | if (rc == -EAGAIN) | |
5331 | goto QFSUnixRetry; | |
5332 | ||
5333 | ||
5334 | return rc; | |
5335 | } | |
5336 | ||
ac67055e | 5337 | int |
6d5786a3 | 5338 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5339 | { |
5340 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5341 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5342 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5343 | int rc = 0; | |
5344 | int bytes_returned = 0; | |
5345 | __u16 params, param_offset, offset, byte_count; | |
5346 | ||
f96637be | 5347 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 5348 | SETFSUnixRetry: |
f26282c9 | 5349 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5350 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5351 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5352 | if (rc) |
5353 | return rc; | |
5354 | ||
5355 | params = 4; /* 2 bytes zero followed by info level. */ | |
5356 | pSMB->MaxSetupCount = 0; | |
5357 | pSMB->Reserved = 0; | |
5358 | pSMB->Flags = 0; | |
5359 | pSMB->Timeout = 0; | |
5360 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5361 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5362 | - 4; | |
ac67055e JA |
5363 | offset = param_offset + params; |
5364 | ||
5365 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5366 | /* BB find exact max SMB PDU from sess structure BB */ |
5367 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5368 | pSMB->SetupCount = 1; |
5369 | pSMB->Reserved3 = 0; | |
5370 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5371 | byte_count = 1 /* pad */ + params + 12; | |
5372 | ||
5373 | pSMB->DataCount = cpu_to_le16(12); | |
5374 | pSMB->ParameterCount = cpu_to_le16(params); | |
5375 | pSMB->TotalDataCount = pSMB->DataCount; | |
5376 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5377 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5378 | pSMB->DataOffset = cpu_to_le16(offset); | |
5379 | ||
5380 | /* Params. */ | |
5381 | pSMB->FileNum = 0; | |
5382 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5383 | ||
5384 | /* Data. */ | |
5385 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5386 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5387 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5388 | ||
be8e3b00 | 5389 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5390 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5391 | ||
5392 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5393 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5394 | if (rc) { | |
f96637be | 5395 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
5396 | } else { /* decode response */ |
5397 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5398 | if (rc) |
ac67055e | 5399 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5400 | } |
5401 | cifs_buf_release(pSMB); | |
5402 | ||
5403 | if (rc == -EAGAIN) | |
5404 | goto SETFSUnixRetry; | |
5405 | ||
5406 | return rc; | |
5407 | } | |
5408 | ||
5409 | ||
1da177e4 LT |
5410 | |
5411 | int | |
6d5786a3 | 5412 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5413 | struct kstatfs *FSData) |
1da177e4 LT |
5414 | { |
5415 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5416 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5417 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5418 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5419 | int rc = 0; | |
5420 | int bytes_returned = 0; | |
5421 | __u16 params, byte_count; | |
5422 | ||
f96637be | 5423 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
5424 | QFSPosixRetry: |
5425 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5426 | (void **) &pSMBr); | |
5427 | if (rc) | |
5428 | return rc; | |
5429 | ||
5430 | params = 2; /* level */ | |
5431 | pSMB->TotalDataCount = 0; | |
5432 | pSMB->DataCount = 0; | |
5433 | pSMB->DataOffset = 0; | |
5434 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5435 | /* BB find exact max SMB PDU from sess structure BB */ |
5436 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5437 | pSMB->MaxSetupCount = 0; |
5438 | pSMB->Reserved = 0; | |
5439 | pSMB->Flags = 0; | |
5440 | pSMB->Timeout = 0; | |
5441 | pSMB->Reserved2 = 0; | |
5442 | byte_count = params + 1 /* pad */ ; | |
5443 | pSMB->ParameterCount = cpu_to_le16(params); | |
5444 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5445 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5446 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5447 | pSMB->SetupCount = 1; |
5448 | pSMB->Reserved3 = 0; | |
5449 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5450 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5451 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5452 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5453 | ||
5454 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5455 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5456 | if (rc) { | |
f96637be | 5457 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5458 | } else { /* decode response */ |
5459 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5460 | ||
820a803f | 5461 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5462 | rc = -EIO; /* bad smb */ |
5463 | } else { | |
5464 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5465 | response_data = | |
5466 | (FILE_SYSTEM_POSIX_INFO | |
5467 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5468 | data_offset); | |
5469 | FSData->f_bsize = | |
5470 | le32_to_cpu(response_data->BlockSize); | |
5a519bea SF |
5471 | /* |
5472 | * much prefer larger but if server doesn't report | |
5473 | * a valid size than 4K is a reasonable minimum | |
5474 | */ | |
5475 | if (FSData->f_bsize < 512) | |
5476 | FSData->f_bsize = 4096; | |
5477 | ||
1da177e4 LT |
5478 | FSData->f_blocks = |
5479 | le64_to_cpu(response_data->TotalBlocks); | |
5480 | FSData->f_bfree = | |
5481 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5482 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5483 | FSData->f_bavail = FSData->f_bfree; |
5484 | } else { | |
5485 | FSData->f_bavail = | |
50c2f753 | 5486 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5487 | } |
790fe579 | 5488 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5489 | FSData->f_files = |
50c2f753 | 5490 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5491 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5492 | FSData->f_ffree = |
50c2f753 | 5493 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5494 | } |
5495 | } | |
5496 | cifs_buf_release(pSMB); | |
5497 | ||
5498 | if (rc == -EAGAIN) | |
5499 | goto QFSPosixRetry; | |
5500 | ||
5501 | return rc; | |
5502 | } | |
5503 | ||
5504 | ||
d1433418 PS |
5505 | /* |
5506 | * We can not use write of zero bytes trick to set file size due to need for | |
5507 | * large file support. Also note that this SetPathInfo is preferred to | |
5508 | * SetFileInfo based method in next routine which is only needed to work around | |
5509 | * a sharing violation bugin Samba which this routine can run into. | |
5510 | */ | |
1da177e4 | 5511 | int |
6d5786a3 | 5512 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5513 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5514 | bool set_allocation) | |
1da177e4 LT |
5515 | { |
5516 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5517 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5518 | struct file_end_of_file_info *parm_data; | |
5519 | int name_len; | |
5520 | int rc = 0; | |
5521 | int bytes_returned = 0; | |
2baa2682 | 5522 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5523 | |
1da177e4 LT |
5524 | __u16 params, byte_count, data_count, param_offset, offset; |
5525 | ||
f96637be | 5526 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5527 | SetEOFRetry: |
5528 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5529 | (void **) &pSMBr); | |
5530 | if (rc) | |
5531 | return rc; | |
5532 | ||
5533 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5534 | name_len = | |
d1433418 PS |
5535 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5536 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5537 | name_len++; /* trailing null */ |
5538 | name_len *= 2; | |
340625e6 RS |
5539 | } else { |
5540 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5541 | } |
5542 | params = 6 + name_len; | |
26f57364 | 5543 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5544 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5545 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5546 | pSMB->MaxSetupCount = 0; |
5547 | pSMB->Reserved = 0; | |
5548 | pSMB->Flags = 0; | |
5549 | pSMB->Timeout = 0; | |
5550 | pSMB->Reserved2 = 0; | |
5551 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5552 | InformationLevel) - 4; |
1da177e4 | 5553 | offset = param_offset + params; |
d1433418 | 5554 | if (set_allocation) { |
50c2f753 SF |
5555 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5556 | pSMB->InformationLevel = | |
5557 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5558 | else | |
5559 | pSMB->InformationLevel = | |
5560 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5561 | } else /* Set File Size */ { | |
1da177e4 LT |
5562 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5563 | pSMB->InformationLevel = | |
50c2f753 | 5564 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5565 | else |
5566 | pSMB->InformationLevel = | |
50c2f753 | 5567 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5568 | } |
5569 | ||
5570 | parm_data = | |
5571 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5572 | offset); | |
5573 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5574 | pSMB->DataOffset = cpu_to_le16(offset); | |
5575 | pSMB->SetupCount = 1; | |
5576 | pSMB->Reserved3 = 0; | |
5577 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5578 | byte_count = 3 /* pad */ + params + data_count; | |
5579 | pSMB->DataCount = cpu_to_le16(data_count); | |
5580 | pSMB->TotalDataCount = pSMB->DataCount; | |
5581 | pSMB->ParameterCount = cpu_to_le16(params); | |
5582 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5583 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5584 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5585 | parm_data->FileSize = cpu_to_le64(size); |
5586 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5587 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5588 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5589 | if (rc) |
f96637be | 5590 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5591 | |
5592 | cifs_buf_release(pSMB); | |
5593 | ||
5594 | if (rc == -EAGAIN) | |
5595 | goto SetEOFRetry; | |
5596 | ||
5597 | return rc; | |
5598 | } | |
5599 | ||
5600 | int | |
d1433418 PS |
5601 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5602 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5603 | { |
5604 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5605 | struct file_end_of_file_info *parm_data; |
5606 | int rc = 0; | |
1da177e4 LT |
5607 | __u16 params, param_offset, offset, byte_count, count; |
5608 | ||
f96637be JP |
5609 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5610 | (long long)size); | |
cd63499c SF |
5611 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5612 | ||
1da177e4 LT |
5613 | if (rc) |
5614 | return rc; | |
5615 | ||
d1433418 PS |
5616 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5617 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5618 | |
1da177e4 LT |
5619 | params = 6; |
5620 | pSMB->MaxSetupCount = 0; | |
5621 | pSMB->Reserved = 0; | |
5622 | pSMB->Flags = 0; | |
5623 | pSMB->Timeout = 0; | |
5624 | pSMB->Reserved2 = 0; | |
5625 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5626 | offset = param_offset + params; | |
5627 | ||
1da177e4 LT |
5628 | count = sizeof(struct file_end_of_file_info); |
5629 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5630 | /* BB find exact max SMB PDU from sess structure BB */ |
5631 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5632 | pSMB->SetupCount = 1; |
5633 | pSMB->Reserved3 = 0; | |
5634 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5635 | byte_count = 3 /* pad */ + params + count; | |
5636 | pSMB->DataCount = cpu_to_le16(count); | |
5637 | pSMB->ParameterCount = cpu_to_le16(params); | |
5638 | pSMB->TotalDataCount = pSMB->DataCount; | |
5639 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5640 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5641 | parm_data = | |
50c2f753 SF |
5642 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5643 | + offset); | |
1da177e4 LT |
5644 | pSMB->DataOffset = cpu_to_le16(offset); |
5645 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5646 | pSMB->Fid = cfile->fid.netfid; |
5647 | if (set_allocation) { | |
1da177e4 LT |
5648 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5649 | pSMB->InformationLevel = | |
5650 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5651 | else | |
5652 | pSMB->InformationLevel = | |
5653 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5654 | } else /* Set File Size */ { |
1da177e4 LT |
5655 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5656 | pSMB->InformationLevel = | |
50c2f753 | 5657 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5658 | else |
5659 | pSMB->InformationLevel = | |
50c2f753 | 5660 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5661 | } |
5662 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5663 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5664 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5665 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5666 | cifs_small_buf_release(pSMB); |
1da177e4 | 5667 | if (rc) { |
f96637be JP |
5668 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5669 | rc); | |
1da177e4 LT |
5670 | } |
5671 | ||
50c2f753 | 5672 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5673 | since file handle passed in no longer valid */ |
5674 | ||
5675 | return rc; | |
5676 | } | |
5677 | ||
50c2f753 | 5678 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5679 | an open handle, rather than by pathname - this is awkward due to |
5680 | potential access conflicts on the open, but it is unavoidable for these | |
5681 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5682 | time and resort to the original setpathinfo level which takes the ancient | |
5683 | DOS time format with 2 second granularity */ | |
5684 | int | |
6d5786a3 | 5685 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5686 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5687 | { |
5688 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5689 | char *data_offset; |
5690 | int rc = 0; | |
1da177e4 LT |
5691 | __u16 params, param_offset, offset, byte_count, count; |
5692 | ||
f96637be | 5693 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5694 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5695 | ||
1da177e4 LT |
5696 | if (rc) |
5697 | return rc; | |
5698 | ||
2dd2dfa0 JL |
5699 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5700 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5701 | |
1da177e4 LT |
5702 | params = 6; |
5703 | pSMB->MaxSetupCount = 0; | |
5704 | pSMB->Reserved = 0; | |
5705 | pSMB->Flags = 0; | |
5706 | pSMB->Timeout = 0; | |
5707 | pSMB->Reserved2 = 0; | |
5708 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5709 | offset = param_offset + params; | |
5710 | ||
b2a3ad9c JL |
5711 | data_offset = (char *)pSMB + |
5712 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5713 | |
26f57364 | 5714 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5715 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5716 | /* BB find max SMB PDU from sess */ |
5717 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5718 | pSMB->SetupCount = 1; |
5719 | pSMB->Reserved3 = 0; | |
5720 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5721 | byte_count = 3 /* pad */ + params + count; | |
5722 | pSMB->DataCount = cpu_to_le16(count); | |
5723 | pSMB->ParameterCount = cpu_to_le16(params); | |
5724 | pSMB->TotalDataCount = pSMB->DataCount; | |
5725 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5726 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5727 | pSMB->DataOffset = cpu_to_le16(offset); | |
5728 | pSMB->Fid = fid; | |
5729 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5730 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5731 | else | |
5732 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5733 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5734 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5735 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5736 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5737 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5738 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5739 | if (rc) |
f96637be JP |
5740 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5741 | rc); | |
1da177e4 | 5742 | |
50c2f753 | 5743 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5744 | since file handle passed in no longer valid */ |
5745 | ||
5746 | return rc; | |
5747 | } | |
5748 | ||
6d22f098 | 5749 | int |
6d5786a3 | 5750 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5751 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5752 | { | |
5753 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5754 | char *data_offset; | |
5755 | int rc = 0; | |
5756 | __u16 params, param_offset, offset, byte_count, count; | |
5757 | ||
f96637be | 5758 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5759 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5760 | ||
5761 | if (rc) | |
5762 | return rc; | |
5763 | ||
5764 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5765 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5766 | ||
5767 | params = 6; | |
5768 | pSMB->MaxSetupCount = 0; | |
5769 | pSMB->Reserved = 0; | |
5770 | pSMB->Flags = 0; | |
5771 | pSMB->Timeout = 0; | |
5772 | pSMB->Reserved2 = 0; | |
5773 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5774 | offset = param_offset + params; | |
5775 | ||
5776 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5777 | ||
5778 | count = 1; | |
5779 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5780 | /* BB find max SMB PDU from sess */ | |
5781 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5782 | pSMB->SetupCount = 1; | |
5783 | pSMB->Reserved3 = 0; | |
5784 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5785 | byte_count = 3 /* pad */ + params + count; | |
5786 | pSMB->DataCount = cpu_to_le16(count); | |
5787 | pSMB->ParameterCount = cpu_to_le16(params); | |
5788 | pSMB->TotalDataCount = pSMB->DataCount; | |
5789 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5790 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5791 | pSMB->DataOffset = cpu_to_le16(offset); | |
5792 | pSMB->Fid = fid; | |
5793 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5794 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5795 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5796 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5797 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5798 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5799 | cifs_small_buf_release(pSMB); |
6d22f098 | 5800 | if (rc) |
f96637be | 5801 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5802 | |
5803 | return rc; | |
5804 | } | |
1da177e4 | 5805 | |
8e408fc9 RS |
5806 | static int |
5807 | CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon, | |
5808 | const char *fileName, const FILE_BASIC_INFO *data, | |
5809 | const struct nls_table *nls_codepage, | |
5810 | struct cifs_sb_info *cifs_sb) | |
5811 | { | |
5812 | int oplock = 0; | |
5813 | struct cifs_open_parms oparms; | |
5814 | struct cifs_fid fid; | |
5815 | int rc; | |
5816 | ||
5817 | oparms.tcon = tcon; | |
5818 | oparms.cifs_sb = cifs_sb; | |
5819 | oparms.desired_access = GENERIC_WRITE; | |
5820 | oparms.create_options = cifs_create_options(cifs_sb, 0); | |
5821 | oparms.disposition = FILE_OPEN; | |
5822 | oparms.path = fileName; | |
5823 | oparms.fid = &fid; | |
5824 | oparms.reconnect = false; | |
5825 | ||
5826 | rc = CIFS_open(xid, &oparms, &oplock, NULL); | |
5827 | if (rc) | |
5828 | goto out; | |
5829 | ||
5830 | rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid); | |
5831 | CIFSSMBClose(xid, tcon, fid.netfid); | |
5832 | out: | |
5833 | ||
5834 | return rc; | |
5835 | } | |
5836 | ||
1da177e4 | 5837 | int |
6d5786a3 | 5838 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 | 5839 | const char *fileName, const FILE_BASIC_INFO *data, |
8e408fc9 RS |
5840 | const struct nls_table *nls_codepage, |
5841 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
5842 | { |
5843 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5844 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5845 | int name_len; | |
5846 | int rc = 0; | |
5847 | int bytes_returned = 0; | |
5848 | char *data_offset; | |
5849 | __u16 params, param_offset, offset, byte_count, count; | |
8e408fc9 | 5850 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5851 | |
f96637be | 5852 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5853 | |
5854 | SetTimesRetry: | |
5855 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5856 | (void **) &pSMBr); | |
5857 | if (rc) | |
5858 | return rc; | |
5859 | ||
5860 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5861 | name_len = | |
acbbb76a SF |
5862 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5863 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5864 | name_len++; /* trailing null */ |
5865 | name_len *= 2; | |
340625e6 RS |
5866 | } else { |
5867 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5868 | } |
5869 | ||
5870 | params = 6 + name_len; | |
26f57364 | 5871 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5872 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5873 | /* BB find max SMB PDU from sess structure BB */ |
5874 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5875 | pSMB->MaxSetupCount = 0; |
5876 | pSMB->Reserved = 0; | |
5877 | pSMB->Flags = 0; | |
5878 | pSMB->Timeout = 0; | |
5879 | pSMB->Reserved2 = 0; | |
5880 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5881 | InformationLevel) - 4; |
1da177e4 LT |
5882 | offset = param_offset + params; |
5883 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5884 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5885 | pSMB->DataOffset = cpu_to_le16(offset); | |
5886 | pSMB->SetupCount = 1; | |
5887 | pSMB->Reserved3 = 0; | |
5888 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5889 | byte_count = 3 /* pad */ + params + count; | |
5890 | ||
5891 | pSMB->DataCount = cpu_to_le16(count); | |
5892 | pSMB->ParameterCount = cpu_to_le16(params); | |
5893 | pSMB->TotalDataCount = pSMB->DataCount; | |
5894 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5895 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5896 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5897 | else | |
5898 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5899 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5900 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5901 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5902 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5903 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5904 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5905 | if (rc) |
f96637be | 5906 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5907 | |
5908 | cifs_buf_release(pSMB); | |
5909 | ||
5910 | if (rc == -EAGAIN) | |
5911 | goto SetTimesRetry; | |
5912 | ||
8e408fc9 RS |
5913 | if (rc == -EOPNOTSUPP) |
5914 | return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data, | |
5915 | nls_codepage, cifs_sb); | |
5916 | ||
1da177e4 LT |
5917 | return rc; |
5918 | } | |
5919 | ||
5920 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5921 | /* Can be used to set attributes */ | |
5922 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5923 | handling it anyway and NT4 was what we thought it would be needed for | |
5924 | Do not delete it until we prove whether needed for Win9x though */ | |
5925 | int | |
6d5786a3 | 5926 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5927 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5928 | { | |
5929 | SETATTR_REQ *pSMB = NULL; | |
5930 | SETATTR_RSP *pSMBr = NULL; | |
5931 | int rc = 0; | |
5932 | int bytes_returned; | |
5933 | int name_len; | |
5934 | ||
f96637be | 5935 | cifs_dbg(FYI, "In SetAttrLegacy\n"); |
1da177e4 LT |
5936 | |
5937 | SetAttrLgcyRetry: | |
5938 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5939 | (void **) &pSMBr); | |
5940 | if (rc) | |
5941 | return rc; | |
5942 | ||
5943 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5944 | name_len = | |
acbbb76a SF |
5945 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5946 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5947 | name_len++; /* trailing null */ |
5948 | name_len *= 2; | |
340625e6 RS |
5949 | } else { |
5950 | name_len = copy_path_name(pSMB->fileName, fileName); | |
1da177e4 LT |
5951 | } |
5952 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5953 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5954 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5955 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5956 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5957 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5958 | if (rc) |
f96637be | 5959 | cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
1da177e4 LT |
5960 | |
5961 | cifs_buf_release(pSMB); | |
5962 | ||
5963 | if (rc == -EAGAIN) | |
5964 | goto SetAttrLgcyRetry; | |
5965 | ||
5966 | return rc; | |
5967 | } | |
5968 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5969 | ||
654cf14a JL |
5970 | static void |
5971 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5972 | const struct cifs_unix_set_info_args *args) | |
5973 | { | |
49418b2c | 5974 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5975 | u64 mode = args->mode; |
5976 | ||
49418b2c EB |
5977 | if (uid_valid(args->uid)) |
5978 | uid = from_kuid(&init_user_ns, args->uid); | |
5979 | if (gid_valid(args->gid)) | |
5980 | gid = from_kgid(&init_user_ns, args->gid); | |
5981 | ||
654cf14a JL |
5982 | /* |
5983 | * Samba server ignores set of file size to zero due to bugs in some | |
5984 | * older clients, but we should be precise - we use SetFileSize to | |
5985 | * set file size and do not want to truncate file size to zero | |
25985edc | 5986 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5987 | * zero instead of -1 here |
5988 | */ | |
5989 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5990 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5991 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5992 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5993 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5994 | data_offset->Uid = cpu_to_le64(uid); |
5995 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5996 | /* better to leave device as zero when it is */ |
5997 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5998 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5999 | data_offset->Permissions = cpu_to_le64(mode); | |
6000 | ||
6001 | if (S_ISREG(mode)) | |
6002 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
6003 | else if (S_ISDIR(mode)) | |
6004 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
6005 | else if (S_ISLNK(mode)) | |
6006 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
6007 | else if (S_ISCHR(mode)) | |
6008 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
6009 | else if (S_ISBLK(mode)) | |
6010 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
6011 | else if (S_ISFIFO(mode)) | |
6012 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
6013 | else if (S_ISSOCK(mode)) | |
6014 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
6015 | } | |
6016 | ||
3bbeeb3c | 6017 | int |
6d5786a3 | 6018 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
6019 | const struct cifs_unix_set_info_args *args, |
6020 | u16 fid, u32 pid_of_opener) | |
6021 | { | |
6022 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 6023 | char *data_offset; |
3bbeeb3c JL |
6024 | int rc = 0; |
6025 | u16 params, param_offset, offset, byte_count, count; | |
6026 | ||
f96637be | 6027 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
6028 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
6029 | ||
6030 | if (rc) | |
6031 | return rc; | |
6032 | ||
6033 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
6034 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
6035 | ||
6036 | params = 6; | |
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_sfi_req, Fid) - 4; | |
6043 | offset = param_offset + params; | |
6044 | ||
b2a3ad9c JL |
6045 | data_offset = (char *)pSMB + |
6046 | offsetof(struct smb_hdr, Protocol) + offset; | |
6047 | ||
3bbeeb3c JL |
6048 | count = sizeof(FILE_UNIX_BASIC_INFO); |
6049 | ||
6050 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
6051 | /* BB find max SMB PDU from sess */ | |
6052 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
6053 | pSMB->SetupCount = 1; | |
6054 | pSMB->Reserved3 = 0; | |
6055 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
6056 | byte_count = 3 /* pad */ + params + count; | |
6057 | pSMB->DataCount = cpu_to_le16(count); | |
6058 | pSMB->ParameterCount = cpu_to_le16(params); | |
6059 | pSMB->TotalDataCount = pSMB->DataCount; | |
6060 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6061 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6062 | pSMB->DataOffset = cpu_to_le16(offset); | |
6063 | pSMB->Fid = fid; | |
6064 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6065 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6066 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
6067 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6068 | ||
b2a3ad9c | 6069 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 6070 | |
792af7b0 | 6071 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 6072 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 6073 | if (rc) |
f96637be JP |
6074 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
6075 | rc); | |
3bbeeb3c JL |
6076 | |
6077 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
6078 | since file handle passed in no longer valid */ | |
6079 | ||
6080 | return rc; | |
6081 | } | |
6082 | ||
1da177e4 | 6083 | int |
6d5786a3 | 6084 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 6085 | const char *file_name, |
01ea95e3 JL |
6086 | const struct cifs_unix_set_info_args *args, |
6087 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6088 | { |
6089 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6090 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6091 | int name_len; | |
6092 | int rc = 0; | |
6093 | int bytes_returned = 0; | |
6094 | FILE_UNIX_BASIC_INFO *data_offset; | |
6095 | __u16 params, param_offset, offset, count, byte_count; | |
6096 | ||
f96637be | 6097 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
6098 | setPermsRetry: |
6099 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6100 | (void **) &pSMBr); | |
6101 | if (rc) | |
6102 | return rc; | |
6103 | ||
6104 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6105 | name_len = | |
ff691e96 | 6106 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 6107 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
6108 | name_len++; /* trailing null */ |
6109 | name_len *= 2; | |
340625e6 RS |
6110 | } else { |
6111 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
6112 | } |
6113 | ||
6114 | params = 6 + name_len; | |
26f57364 | 6115 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6116 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6117 | /* BB find max SMB PDU from sess structure BB */ |
6118 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6119 | pSMB->MaxSetupCount = 0; |
6120 | pSMB->Reserved = 0; | |
6121 | pSMB->Flags = 0; | |
6122 | pSMB->Timeout = 0; | |
6123 | pSMB->Reserved2 = 0; | |
6124 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6125 | InformationLevel) - 4; |
1da177e4 LT |
6126 | offset = param_offset + params; |
6127 | data_offset = | |
6128 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6129 | offset); | |
6130 | memset(data_offset, 0, count); | |
6131 | pSMB->DataOffset = cpu_to_le16(offset); | |
6132 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6133 | pSMB->SetupCount = 1; | |
6134 | pSMB->Reserved3 = 0; | |
6135 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6136 | byte_count = 3 /* pad */ + params + count; | |
6137 | pSMB->ParameterCount = cpu_to_le16(params); | |
6138 | pSMB->DataCount = cpu_to_le16(count); | |
6139 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6140 | pSMB->TotalDataCount = pSMB->DataCount; | |
6141 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6142 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6143 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6144 | |
654cf14a | 6145 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6146 | |
6147 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6148 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6149 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6150 | if (rc) |
f96637be | 6151 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 6152 | |
0d817bc0 | 6153 | cifs_buf_release(pSMB); |
1da177e4 LT |
6154 | if (rc == -EAGAIN) |
6155 | goto setPermsRetry; | |
6156 | return rc; | |
6157 | } | |
6158 | ||
1da177e4 | 6159 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6160 | /* |
6161 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6162 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6163 | * it looks for that attribute name and stuffs that value into the EAData | |
6164 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6165 | * buffer. In both cases, the return value is either the length of the | |
6166 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6167 | * the data isn't copied to it, but the length is returned. | |
6168 | */ | |
1da177e4 | 6169 | ssize_t |
6d5786a3 | 6170 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6171 | const unsigned char *searchName, const unsigned char *ea_name, |
6172 | char *EAData, size_t buf_size, | |
67b4c889 | 6173 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6174 | { |
6175 | /* BB assumes one setup word */ | |
6176 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6177 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
6178 | int remap = cifs_remap(cifs_sb); |
6179 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
6180 | int rc = 0; |
6181 | int bytes_returned; | |
6e462b9f | 6182 | int list_len; |
f0d3868b | 6183 | struct fealist *ea_response_data; |
50c2f753 SF |
6184 | struct fea *temp_fea; |
6185 | char *temp_ptr; | |
0cd126b5 | 6186 | char *end_of_smb; |
f0d3868b | 6187 | __u16 params, byte_count, data_offset; |
5980fc96 | 6188 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6189 | |
f96637be | 6190 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
6191 | QAllEAsRetry: |
6192 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6193 | (void **) &pSMBr); | |
6194 | if (rc) | |
6195 | return rc; | |
6196 | ||
6197 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6198 | list_len = |
acbbb76a SF |
6199 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6200 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6201 | list_len++; /* trailing null */ |
6202 | list_len *= 2; | |
340625e6 RS |
6203 | } else { |
6204 | list_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
6205 | } |
6206 | ||
6e462b9f | 6207 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6208 | pSMB->TotalDataCount = 0; |
6209 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6210 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6211 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6212 | pSMB->MaxSetupCount = 0; |
6213 | pSMB->Reserved = 0; | |
6214 | pSMB->Flags = 0; | |
6215 | pSMB->Timeout = 0; | |
6216 | pSMB->Reserved2 = 0; | |
6217 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6218 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6219 | pSMB->DataCount = 0; |
6220 | pSMB->DataOffset = 0; | |
6221 | pSMB->SetupCount = 1; | |
6222 | pSMB->Reserved3 = 0; | |
6223 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6224 | byte_count = params + 1 /* pad */ ; | |
6225 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6226 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6227 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6228 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6229 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6230 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6231 | ||
6232 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6233 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6234 | if (rc) { | |
f96637be | 6235 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
6236 | goto QAllEAsOut; |
6237 | } | |
1da177e4 | 6238 | |
f0d3868b JL |
6239 | |
6240 | /* BB also check enough total bytes returned */ | |
6241 | /* BB we need to improve the validity checking | |
6242 | of these trans2 responses */ | |
6243 | ||
6244 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6245 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6246 | rc = -EIO; /* bad smb */ |
6247 | goto QAllEAsOut; | |
6248 | } | |
6249 | ||
6250 | /* check that length of list is not more than bcc */ | |
6251 | /* check that each entry does not go beyond length | |
6252 | of list */ | |
6253 | /* check that each element of each entry does not | |
6254 | go beyond end of list */ | |
6255 | /* validate_trans2_offsets() */ | |
6256 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6257 | ||
6258 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6259 | ea_response_data = (struct fealist *) | |
6260 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6261 | ||
6e462b9f | 6262 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 6263 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 6264 | if (list_len <= 8) { |
f96637be | 6265 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
6266 | /* didn't find the named attribute */ |
6267 | if (ea_name) | |
6268 | rc = -ENODATA; | |
f0d3868b JL |
6269 | goto QAllEAsOut; |
6270 | } | |
6271 | ||
0cd126b5 | 6272 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6273 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6274 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 6275 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
6276 | rc = -EIO; |
6277 | goto QAllEAsOut; | |
6278 | } | |
6279 | ||
f0d3868b | 6280 | /* account for ea list len */ |
6e462b9f | 6281 | list_len -= 4; |
f0d3868b JL |
6282 | temp_fea = ea_response_data->list; |
6283 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6284 | while (list_len > 0) { |
122ca007 | 6285 | unsigned int name_len; |
f0d3868b | 6286 | __u16 value_len; |
0cd126b5 | 6287 | |
6e462b9f | 6288 | list_len -= 4; |
f0d3868b | 6289 | temp_ptr += 4; |
0cd126b5 JL |
6290 | /* make sure we can read name_len and value_len */ |
6291 | if (list_len < 0) { | |
f96637be | 6292 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6293 | rc = -EIO; |
6294 | goto QAllEAsOut; | |
6295 | } | |
6296 | ||
6297 | name_len = temp_fea->name_len; | |
6298 | value_len = le16_to_cpu(temp_fea->value_len); | |
6299 | list_len -= name_len + 1 + value_len; | |
6300 | if (list_len < 0) { | |
f96637be | 6301 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
6302 | rc = -EIO; |
6303 | goto QAllEAsOut; | |
6304 | } | |
6305 | ||
31c0519f | 6306 | if (ea_name) { |
91d065c4 | 6307 | if (ea_name_len == name_len && |
ac423446 | 6308 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6309 | temp_ptr += name_len + 1; |
6310 | rc = value_len; | |
6311 | if (buf_size == 0) | |
6312 | goto QAllEAsOut; | |
6313 | if ((size_t)value_len > buf_size) { | |
6314 | rc = -ERANGE; | |
6315 | goto QAllEAsOut; | |
6316 | } | |
6317 | memcpy(EAData, temp_ptr, value_len); | |
6318 | goto QAllEAsOut; | |
6319 | } | |
f0d3868b | 6320 | } else { |
31c0519f JL |
6321 | /* account for prefix user. and trailing null */ |
6322 | rc += (5 + 1 + name_len); | |
6323 | if (rc < (int) buf_size) { | |
6324 | memcpy(EAData, "user.", 5); | |
6325 | EAData += 5; | |
6326 | memcpy(EAData, temp_ptr, name_len); | |
6327 | EAData += name_len; | |
6328 | /* null terminate name */ | |
6329 | *EAData = 0; | |
6330 | ++EAData; | |
6331 | } else if (buf_size == 0) { | |
6332 | /* skip copy - calc size only */ | |
6333 | } else { | |
6334 | /* stop before overrun buffer */ | |
6335 | rc = -ERANGE; | |
6336 | break; | |
6337 | } | |
1da177e4 | 6338 | } |
0cd126b5 | 6339 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6340 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6341 | } |
f0d3868b | 6342 | |
31c0519f JL |
6343 | /* didn't find the named attribute */ |
6344 | if (ea_name) | |
6345 | rc = -ENODATA; | |
6346 | ||
f0d3868b | 6347 | QAllEAsOut: |
0d817bc0 | 6348 | cifs_buf_release(pSMB); |
1da177e4 LT |
6349 | if (rc == -EAGAIN) |
6350 | goto QAllEAsRetry; | |
6351 | ||
6352 | return (ssize_t)rc; | |
6353 | } | |
6354 | ||
1da177e4 | 6355 | int |
6d5786a3 PS |
6356 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6357 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 6358 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 6359 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
6360 | { |
6361 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6362 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6363 | struct fealist *parm_data; | |
6364 | int name_len; | |
6365 | int rc = 0; | |
6366 | int bytes_returned = 0; | |
6367 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 6368 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 6369 | |
f96637be | 6370 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
6371 | SetEARetry: |
6372 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6373 | (void **) &pSMBr); | |
6374 | if (rc) | |
6375 | return rc; | |
6376 | ||
6377 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6378 | name_len = | |
acbbb76a SF |
6379 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6380 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6381 | name_len++; /* trailing null */ |
6382 | name_len *= 2; | |
340625e6 RS |
6383 | } else { |
6384 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
6385 | } |
6386 | ||
6387 | params = 6 + name_len; | |
6388 | ||
6389 | /* done calculating parms using name_len of file name, | |
6390 | now use name_len to calculate length of ea name | |
6391 | we are going to create in the inode xattrs */ | |
790fe579 | 6392 | if (ea_name == NULL) |
1da177e4 LT |
6393 | name_len = 0; |
6394 | else | |
50c2f753 | 6395 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6396 | |
dae5dbdb | 6397 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6398 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6399 | /* BB find max SMB PDU from sess */ |
6400 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6401 | pSMB->MaxSetupCount = 0; |
6402 | pSMB->Reserved = 0; | |
6403 | pSMB->Flags = 0; | |
6404 | pSMB->Timeout = 0; | |
6405 | pSMB->Reserved2 = 0; | |
6406 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6407 | InformationLevel) - 4; |
1da177e4 LT |
6408 | offset = param_offset + params; |
6409 | pSMB->InformationLevel = | |
6410 | cpu_to_le16(SMB_SET_FILE_EA); | |
6411 | ||
ade7db99 | 6412 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
6413 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
6414 | pSMB->DataOffset = cpu_to_le16(offset); | |
6415 | pSMB->SetupCount = 1; | |
6416 | pSMB->Reserved3 = 0; | |
6417 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6418 | byte_count = 3 /* pad */ + params + count; | |
6419 | pSMB->DataCount = cpu_to_le16(count); | |
6420 | parm_data->list_len = cpu_to_le32(count); | |
6421 | parm_data->list[0].EA_flags = 0; | |
6422 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6423 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6424 | /* EA names are always ASCII */ |
790fe579 | 6425 | if (ea_name) |
50c2f753 | 6426 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6427 | parm_data->list[0].name[name_len] = 0; |
6428 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6429 | /* caller ensures that ea_value_len is less than 64K but | |
6430 | we need to ensure that it fits within the smb */ | |
6431 | ||
50c2f753 SF |
6432 | /*BB add length check to see if it would fit in |
6433 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6434 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6435 | if (ea_value_len) | |
50c2f753 SF |
6436 | memcpy(parm_data->list[0].name+name_len+1, |
6437 | ea_value, ea_value_len); | |
1da177e4 LT |
6438 | |
6439 | pSMB->TotalDataCount = pSMB->DataCount; | |
6440 | pSMB->ParameterCount = cpu_to_le16(params); | |
6441 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6442 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6443 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6444 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6445 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6446 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6447 | if (rc) |
f96637be | 6448 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
6449 | |
6450 | cifs_buf_release(pSMB); | |
6451 | ||
6452 | if (rc == -EAGAIN) | |
6453 | goto SetEARetry; | |
6454 | ||
6455 | return rc; | |
6456 | } | |
1da177e4 | 6457 | #endif |