Commit | Line | Data |
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929be906 | 1 | // SPDX-License-Identifier: LGPL-2.1 |
1da177e4 | 2 | /* |
1da177e4 | 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 | * | |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
12 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
13 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
14 | /* treated slightly differently for reconnection purposes since we never */ |
15 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
16 | |
17 | #include <linux/fs.h> | |
5970e15d | 18 | #include <linux/filelock.h> |
1da177e4 LT |
19 | #include <linux/kernel.h> |
20 | #include <linux/vfs.h> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
1da177e4 | 22 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 23 | #include <linux/pagemap.h> |
e28bc5b1 JL |
24 | #include <linux/swap.h> |
25 | #include <linux/task_io_accounting_ops.h> | |
7c0f6ba6 | 26 | #include <linux/uaccess.h> |
1da177e4 | 27 | #include "cifspdu.h" |
d08089f6 | 28 | #include "cifsfs.h" |
1da177e4 | 29 | #include "cifsglob.h" |
d0d66c44 | 30 | #include "cifsacl.h" |
1da177e4 LT |
31 | #include "cifsproto.h" |
32 | #include "cifs_unicode.h" | |
33 | #include "cifs_debug.h" | |
e28bc5b1 | 34 | #include "fscache.h" |
db223a59 | 35 | #include "smbdirect.h" |
08744015 PA |
36 | #ifdef CONFIG_CIFS_DFS_UPCALL |
37 | #include "dfs_cache.h" | |
38 | #endif | |
1da177e4 LT |
39 | |
40 | #ifdef CONFIG_CIFS_POSIX | |
41 | static struct { | |
42 | int index; | |
43 | char *name; | |
44 | } protocols[] = { | |
50c2f753 | 45 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 46 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
47 | {BAD_PROT, "\2"} |
48 | }; | |
49 | #else | |
50 | static struct { | |
51 | int index; | |
52 | char *name; | |
53 | } protocols[] = { | |
790fe579 | 54 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
55 | {BAD_PROT, "\2"} |
56 | }; | |
57 | #endif | |
58 | ||
3979877e SF |
59 | /* define the number of elements in the cifs dialect array */ |
60 | #ifdef CONFIG_CIFS_POSIX | |
3979877e | 61 | #define CIFS_NUM_PROT 2 |
3979877e | 62 | #else /* not posix */ |
3979877e | 63 | #define CIFS_NUM_PROT 1 |
3979877e SF |
64 | #endif /* CIFS_POSIX */ |
65 | ||
1da177e4 | 66 | |
9162ab20 JL |
67 | /* reconnect the socket, tcon, and smb session if needed */ |
68 | static int | |
96daf2b0 | 69 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 70 | { |
c4a5534a | 71 | int rc; |
96daf2b0 | 72 | struct cifs_ses *ses; |
9162ab20 JL |
73 | struct TCP_Server_Info *server; |
74 | struct nls_table *nls_codepage; | |
75 | ||
76 | /* | |
77 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
78 | * tcp and smb session status done differently for those three - in the | |
79 | * calling routine | |
80 | */ | |
81 | if (!tcon) | |
82 | return 0; | |
83 | ||
84 | ses = tcon->ses; | |
85 | server = ses->server; | |
86 | ||
87 | /* | |
88 | * only tree disconnect, open, and write, (and ulogoff which does not | |
89 | * have tcon) are allowed as we start force umount | |
90 | */ | |
d7d7a66a | 91 | spin_lock(&tcon->tc_lock); |
fdf59eb5 | 92 | if (tcon->status == TID_EXITING) { |
9162ab20 JL |
93 | if (smb_command != SMB_COM_WRITE_ANDX && |
94 | smb_command != SMB_COM_OPEN_ANDX && | |
95 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
d7d7a66a | 96 | spin_unlock(&tcon->tc_lock); |
f96637be JP |
97 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
98 | smb_command); | |
9162ab20 JL |
99 | return -ENODEV; |
100 | } | |
101 | } | |
d7d7a66a | 102 | spin_unlock(&tcon->tc_lock); |
9162ab20 | 103 | |
1bcd548d PA |
104 | rc = cifs_wait_for_server_reconnect(server, tcon->retry); |
105 | if (rc) | |
106 | return rc; | |
9162ab20 | 107 | |
d1a931ce SP |
108 | spin_lock(&ses->chan_lock); |
109 | if (!cifs_chan_needs_reconnect(ses, server) && !tcon->need_reconnect) { | |
110 | spin_unlock(&ses->chan_lock); | |
9162ab20 | 111 | return 0; |
d1a931ce SP |
112 | } |
113 | spin_unlock(&ses->chan_lock); | |
9162ab20 JL |
114 | |
115 | nls_codepage = load_nls_default(); | |
116 | ||
76e75270 SC |
117 | /* |
118 | * Recheck after acquire mutex. If another thread is negotiating | |
119 | * and the server never sends an answer the socket will be closed | |
120 | * and tcpStatus set to reconnect. | |
121 | */ | |
d7d7a66a | 122 | spin_lock(&server->srv_lock); |
76e75270 | 123 | if (server->tcpStatus == CifsNeedReconnect) { |
d7d7a66a | 124 | spin_unlock(&server->srv_lock); |
76e75270 | 125 | rc = -EHOSTDOWN; |
76e75270 SC |
126 | goto out; |
127 | } | |
d7d7a66a | 128 | spin_unlock(&server->srv_lock); |
76e75270 | 129 | |
d1a931ce SP |
130 | /* |
131 | * need to prevent multiple threads trying to simultaneously | |
132 | * reconnect the same SMB session | |
133 | */ | |
134 | spin_lock(&ses->chan_lock); | |
135 | if (!cifs_chan_needs_reconnect(ses, server)) { | |
136 | spin_unlock(&ses->chan_lock); | |
f486ef8e SP |
137 | |
138 | /* this means that we only need to tree connect */ | |
d1a931ce SP |
139 | if (tcon->need_reconnect) |
140 | goto skip_sess_setup; | |
141 | ||
142 | rc = -EHOSTDOWN; | |
d1a931ce SP |
143 | goto out; |
144 | } | |
145 | spin_unlock(&ses->chan_lock); | |
146 | ||
73f9bfbe | 147 | mutex_lock(&ses->session_mutex); |
f486ef8e | 148 | rc = cifs_negotiate_protocol(0, ses, server); |
d1a931ce | 149 | if (!rc) |
f486ef8e | 150 | rc = cifs_setup_session(0, ses, server, nls_codepage); |
9162ab20 JL |
151 | |
152 | /* do we need to reconnect tcon? */ | |
153 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 154 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
155 | goto out; |
156 | } | |
157 | ||
d1a931ce | 158 | skip_sess_setup: |
aa24d1e9 | 159 | cifs_mark_open_files_invalid(tcon); |
565674d6 | 160 | rc = cifs_tree_connect(0, tcon, nls_codepage); |
d7b619cf | 161 | mutex_unlock(&ses->session_mutex); |
f96637be | 162 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 163 | |
c318e6c2 | 164 | if (rc) { |
a0a3036b | 165 | pr_warn_once("reconnect tcon failed rc = %d\n", rc); |
9162ab20 | 166 | goto out; |
c318e6c2 | 167 | } |
9162ab20 | 168 | |
9162ab20 JL |
169 | atomic_inc(&tconInfoReconnectCount); |
170 | ||
171 | /* tell server Unix caps we support */ | |
864138cb | 172 | if (cap_unix(ses)) |
9162ab20 JL |
173 | reset_cifs_unix_caps(0, tcon, NULL, NULL); |
174 | ||
175 | /* | |
176 | * Removed call to reopen open files here. It is safer (and faster) to | |
177 | * reopen files one at a time as needed in read and write. | |
178 | * | |
179 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
180 | */ | |
181 | ||
182 | out: | |
183 | /* | |
184 | * Check if handle based operation so we know whether we can continue | |
185 | * or not without returning to caller to reset file handle | |
186 | */ | |
187 | switch (smb_command) { | |
188 | case SMB_COM_READ_ANDX: | |
189 | case SMB_COM_WRITE_ANDX: | |
190 | case SMB_COM_CLOSE: | |
191 | case SMB_COM_FIND_CLOSE2: | |
192 | case SMB_COM_LOCKING_ANDX: | |
193 | rc = -EAGAIN; | |
194 | } | |
195 | ||
196 | unload_nls(nls_codepage); | |
197 | return rc; | |
198 | } | |
199 | ||
ad7a2926 SF |
200 | /* Allocate and return pointer to an SMB request buffer, and set basic |
201 | SMB information in the SMB header. If the return code is zero, this | |
202 | function must have filled in request_buf pointer */ | |
1da177e4 | 203 | static int |
96daf2b0 | 204 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 205 | void **request_buf) |
1da177e4 | 206 | { |
f569599a | 207 | int rc; |
1da177e4 | 208 | |
9162ab20 | 209 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 210 | if (rc) |
1da177e4 LT |
211 | return rc; |
212 | ||
213 | *request_buf = cifs_small_buf_get(); | |
214 | if (*request_buf == NULL) { | |
215 | /* BB should we add a retry in here if not a writepage? */ | |
216 | return -ENOMEM; | |
217 | } | |
218 | ||
63135e08 | 219 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 220 | tcon, wct); |
1da177e4 | 221 | |
790fe579 SF |
222 | if (tcon != NULL) |
223 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 224 | |
f569599a | 225 | return 0; |
5815449d SF |
226 | } |
227 | ||
12b3b8ff | 228 | int |
50c2f753 | 229 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 230 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
231 | { |
232 | int rc; | |
50c2f753 | 233 | struct smb_hdr *buffer; |
12b3b8ff | 234 | |
5815449d | 235 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 236 | if (rc) |
12b3b8ff SF |
237 | return rc; |
238 | ||
04fdabe1 | 239 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 240 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
241 | if (ses->capabilities & CAP_UNICODE) |
242 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 243 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
244 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
245 | ||
246 | /* uid, tid can stay at zero as set in header assemble */ | |
247 | ||
50c2f753 | 248 | /* BB add support for turning on the signing when |
12b3b8ff SF |
249 | this function is used after 1st of session setup requests */ |
250 | ||
251 | return rc; | |
252 | } | |
1da177e4 LT |
253 | |
254 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
255 | static int | |
96daf2b0 | 256 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 257 | void **request_buf, void **response_buf) |
1da177e4 | 258 | { |
1da177e4 LT |
259 | *request_buf = cifs_buf_get(); |
260 | if (*request_buf == NULL) { | |
261 | /* BB should we add a retry in here if not a writepage? */ | |
262 | return -ENOMEM; | |
263 | } | |
264 | /* Although the original thought was we needed the response buf for */ | |
265 | /* potential retries of smb operations it turns out we can determine */ | |
266 | /* from the mid flags when the request buffer can be resent without */ | |
267 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 268 | if (response_buf) |
50c2f753 | 269 | *response_buf = *request_buf; |
1da177e4 LT |
270 | |
271 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 272 | wct); |
1da177e4 | 273 | |
790fe579 SF |
274 | if (tcon != NULL) |
275 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 276 | |
f569599a JL |
277 | return 0; |
278 | } | |
279 | ||
280 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
281 | static int | |
96daf2b0 | 282 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
283 | void **request_buf, void **response_buf) |
284 | { | |
285 | int rc; | |
286 | ||
287 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
288 | if (rc) | |
289 | return rc; | |
290 | ||
291 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
292 | } | |
293 | ||
294 | static int | |
96daf2b0 | 295 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
296 | void **request_buf, void **response_buf) |
297 | { | |
d1a931ce SP |
298 | spin_lock(&tcon->ses->chan_lock); |
299 | if (cifs_chan_needs_reconnect(tcon->ses, tcon->ses->server) || | |
300 | tcon->need_reconnect) { | |
301 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a | 302 | return -EHOSTDOWN; |
d1a931ce SP |
303 | } |
304 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a JL |
305 | |
306 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
307 | } |
308 | ||
50c2f753 | 309 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 310 | { |
12df83c9 JL |
311 | unsigned int total_size; |
312 | ||
313 | /* check for plausible wct */ | |
314 | if (pSMB->hdr.WordCount < 10) | |
315 | goto vt2_err; | |
1da177e4 | 316 | |
1da177e4 | 317 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
318 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
319 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
320 | goto vt2_err; | |
321 | ||
12df83c9 JL |
322 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
323 | if (total_size >= 512) | |
324 | goto vt2_err; | |
325 | ||
fd5707e1 JL |
326 | /* check that bcc is at least as big as parms + data, and that it is |
327 | * less than negotiated smb buffer | |
328 | */ | |
12df83c9 JL |
329 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
330 | if (total_size > get_bcc(&pSMB->hdr) || | |
331 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
332 | goto vt2_err; | |
333 | ||
334 | return 0; | |
335 | vt2_err: | |
50c2f753 | 336 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 337 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 338 | return -EINVAL; |
1da177e4 | 339 | } |
690c522f | 340 | |
31d9e2bd | 341 | static int |
3f618223 | 342 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
343 | { |
344 | int rc = 0; | |
345 | u16 count; | |
346 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 347 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
348 | |
349 | count = get_bcc(&pSMBr->hdr); | |
350 | if (count < SMB1_CLIENT_GUID_SIZE) | |
351 | return -EIO; | |
352 | ||
353 | spin_lock(&cifs_tcp_ses_lock); | |
354 | if (server->srv_count > 1) { | |
355 | spin_unlock(&cifs_tcp_ses_lock); | |
356 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
357 | cifs_dbg(FYI, "server UID changed\n"); | |
358 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
359 | } | |
360 | } else { | |
361 | spin_unlock(&cifs_tcp_ses_lock); | |
362 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
363 | } | |
364 | ||
365 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 366 | server->sec_ntlmssp = true; |
31d9e2bd JL |
367 | } else { |
368 | count -= SMB1_CLIENT_GUID_SIZE; | |
369 | rc = decode_negTokenInit( | |
370 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
371 | if (rc != 1) | |
372 | return -EINVAL; | |
31d9e2bd JL |
373 | } |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
9193400b | 378 | static bool |
3f618223 | 379 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 380 | { |
3f618223 JL |
381 | switch (sectype) { |
382 | case RawNTLMSSP: | |
383 | case Kerberos: | |
9193400b | 384 | return true; |
3f618223 JL |
385 | case Unspecified: |
386 | if (global_secflags & | |
387 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
388 | return true; | |
df561f66 | 389 | fallthrough; |
3f618223 JL |
390 | default: |
391 | return false; | |
392 | } | |
9193400b JL |
393 | } |
394 | ||
1da177e4 | 395 | int |
f486ef8e SP |
396 | CIFSSMBNegotiate(const unsigned int xid, |
397 | struct cifs_ses *ses, | |
398 | struct TCP_Server_Info *server) | |
1da177e4 LT |
399 | { |
400 | NEGOTIATE_REQ *pSMB; | |
401 | NEGOTIATE_RSP *pSMBr; | |
402 | int rc = 0; | |
403 | int bytes_returned; | |
3979877e | 404 | int i; |
1da177e4 LT |
405 | u16 count; |
406 | ||
3534b850 JL |
407 | if (!server) { |
408 | WARN(1, "%s: server is NULL!\n", __func__); | |
409 | return -EIO; | |
1da177e4 | 410 | } |
3534b850 | 411 | |
1da177e4 LT |
412 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
413 | (void **) &pSMB, (void **) &pSMBr); | |
414 | if (rc) | |
415 | return rc; | |
750d1151 | 416 | |
88257360 | 417 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 418 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 419 | |
3f618223 | 420 | if (should_set_ext_sec_flag(ses->sectype)) { |
a0a3036b | 421 | cifs_dbg(FYI, "Requesting extended security\n"); |
ac683924 SF |
422 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
423 | } | |
50c2f753 | 424 | |
3979877e | 425 | count = 0; |
bcfb84a9 SR |
426 | /* |
427 | * We know that all the name entries in the protocols array | |
428 | * are short (< 16 bytes anyway) and are NUL terminated. | |
429 | */ | |
50c2f753 | 430 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
bcfb84a9 SR |
431 | size_t len = strlen(protocols[i].name) + 1; |
432 | ||
943deb60 | 433 | memcpy(&pSMB->DialectsArray[count], protocols[i].name, len); |
bcfb84a9 | 434 | count += len; |
3979877e | 435 | } |
be8e3b00 | 436 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
437 | pSMB->ByteCount = cpu_to_le16(count); |
438 | ||
439 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
440 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 441 | if (rc != 0) |
254e55ed SF |
442 | goto neg_err_exit; |
443 | ||
9bf67e51 | 444 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 445 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 446 | /* Check wct = 1 error case */ |
76a3c92e | 447 | if ((pSMBr->hdr.WordCount <= 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 448 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 449 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
450 | could not negotiate a common dialect */ |
451 | rc = -EOPNOTSUPP; | |
452 | goto neg_err_exit; | |
790fe579 | 453 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
454 | /* unknown wct */ |
455 | rc = -EOPNOTSUPP; | |
456 | goto neg_err_exit; | |
457 | } | |
2190eca1 JL |
458 | /* else wct == 17, NTLM or better */ |
459 | ||
96daf2b0 SF |
460 | server->sec_mode = pSMBr->SecurityMode; |
461 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 462 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 463 | |
254e55ed SF |
464 | /* one byte, so no need to convert this or EncryptionKeyLen from |
465 | little endian */ | |
10b9b98e PS |
466 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
467 | cifs_max_pending); | |
45275789 | 468 | set_credits(server, server->maxReq); |
254e55ed | 469 | /* probably no need to store and check maxvcs */ |
c974befa | 470 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
704528d8 | 471 | /* set up max_read for readahead check */ |
1f641d94 | 472 | server->max_read = server->maxBuf; |
eca6acf9 | 473 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 474 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 475 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
476 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
477 | server->timeAdj *= 60; | |
31d9e2bd | 478 | |
e598d1d8 JL |
479 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
480 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 481 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 482 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
483 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
484 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 485 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 486 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 487 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 488 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
489 | } else { |
490 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 491 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 492 | } |
254e55ed | 493 | |
9ddec561 | 494 | if (!rc) |
38d77c50 | 495 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 496 | neg_err_exit: |
4a6d87f1 | 497 | cifs_buf_release(pSMB); |
254e55ed | 498 | |
f96637be | 499 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
500 | return rc; |
501 | } | |
502 | ||
503 | int | |
2e6e02ab | 504 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
505 | { |
506 | struct smb_hdr *smb_buffer; | |
1da177e4 | 507 | int rc = 0; |
1da177e4 | 508 | |
f96637be | 509 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 510 | |
f1987b44 JL |
511 | /* BB: do we need to check this? These should never be NULL. */ |
512 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
513 | return -EIO; | |
1da177e4 | 514 | |
f1987b44 JL |
515 | /* |
516 | * No need to return error on this operation if tid invalidated and | |
517 | * closed on server already e.g. due to tcp session crashing. Also, | |
518 | * the tcon is no longer on the list, so no need to take lock before | |
519 | * checking this. | |
520 | */ | |
d1a931ce SP |
521 | spin_lock(&tcon->ses->chan_lock); |
522 | if ((tcon->need_reconnect) || CIFS_ALL_CHANS_NEED_RECONNECT(tcon->ses)) { | |
523 | spin_unlock(&tcon->ses->chan_lock); | |
524 | return -EIO; | |
525 | } | |
526 | spin_unlock(&tcon->ses->chan_lock); | |
1da177e4 | 527 | |
50c2f753 | 528 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 529 | (void **)&smb_buffer); |
f1987b44 | 530 | if (rc) |
1da177e4 | 531 | return rc; |
133672ef | 532 | |
792af7b0 | 533 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 534 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 535 | if (rc) |
f96637be | 536 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 537 | |
50c2f753 | 538 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 539 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
540 | if (rc == -EAGAIN) |
541 | rc = 0; | |
542 | ||
543 | return rc; | |
544 | } | |
545 | ||
766fdbb5 JL |
546 | /* |
547 | * This is a no-op for now. We're not really interested in the reply, but | |
548 | * rather in the fact that the server sent one and that server->lstrp | |
549 | * gets updated. | |
550 | * | |
551 | * FIXME: maybe we should consider checking that the reply matches request? | |
552 | */ | |
553 | static void | |
554 | cifs_echo_callback(struct mid_q_entry *mid) | |
555 | { | |
556 | struct TCP_Server_Info *server = mid->callback_data; | |
34f4deb7 | 557 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
766fdbb5 | 558 | |
70f08f91 | 559 | release_mid(mid); |
34f4deb7 | 560 | add_credits(server, &credits, CIFS_ECHO_OP); |
766fdbb5 JL |
561 | } |
562 | ||
563 | int | |
564 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
565 | { | |
566 | ECHO_REQ *smb; | |
567 | int rc = 0; | |
738f9de5 PS |
568 | struct kvec iov[2]; |
569 | struct smb_rqst rqst = { .rq_iov = iov, | |
570 | .rq_nvec = 2 }; | |
766fdbb5 | 571 | |
f96637be | 572 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
573 | |
574 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
575 | if (rc) | |
576 | return rc; | |
577 | ||
26c9cb66 SF |
578 | if (server->capabilities & CAP_UNICODE) |
579 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
580 | ||
766fdbb5 | 581 | /* set up echo request */ |
5443d130 | 582 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
583 | smb->hdr.WordCount = 1; |
584 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 585 | put_bcc(1, &smb->hdr); |
766fdbb5 | 586 | smb->Data[0] = 'a'; |
be8e3b00 | 587 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
588 | |
589 | iov[0].iov_len = 4; | |
590 | iov[0].iov_base = smb; | |
591 | iov[1].iov_len = get_rfc1002_length(smb); | |
592 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 593 | |
9b7c18a2 | 594 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
392e1c5d | 595 | server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL); |
766fdbb5 | 596 | if (rc) |
f96637be | 597 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
598 | |
599 | cifs_small_buf_release(smb); | |
600 | ||
601 | return rc; | |
602 | } | |
603 | ||
1da177e4 | 604 | int |
58c45c58 | 605 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 606 | { |
1da177e4 LT |
607 | LOGOFF_ANDX_REQ *pSMB; |
608 | int rc = 0; | |
1da177e4 | 609 | |
f96637be | 610 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 611 | |
14fbf50d JL |
612 | /* |
613 | * BB: do we need to check validity of ses and server? They should | |
614 | * always be valid since we have an active reference. If not, that | |
615 | * should probably be a BUG() | |
616 | */ | |
617 | if (!ses || !ses->server) | |
3b795210 SF |
618 | return -EIO; |
619 | ||
d7b619cf | 620 | mutex_lock(&ses->session_mutex); |
d1a931ce SP |
621 | spin_lock(&ses->chan_lock); |
622 | if (CIFS_ALL_CHANS_NEED_RECONNECT(ses)) { | |
623 | spin_unlock(&ses->chan_lock); | |
3b795210 SF |
624 | goto session_already_dead; /* no need to send SMBlogoff if uid |
625 | already closed due to reconnect */ | |
d1a931ce SP |
626 | } |
627 | spin_unlock(&ses->chan_lock); | |
628 | ||
1da177e4 LT |
629 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
630 | if (rc) { | |
d7b619cf | 631 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
632 | return rc; |
633 | } | |
634 | ||
88257360 | 635 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 636 | |
38d77c50 JL |
637 | if (ses->server->sign) |
638 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
639 | |
640 | pSMB->hdr.Uid = ses->Suid; | |
641 | ||
642 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 643 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 644 | cifs_small_buf_release(pSMB); |
3b795210 | 645 | session_already_dead: |
d7b619cf | 646 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
647 | |
648 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 649 | since server closed smb session, no sense reporting |
1da177e4 LT |
650 | error */ |
651 | if (rc == -EAGAIN) | |
652 | rc = 0; | |
653 | return rc; | |
654 | } | |
655 | ||
2d785a50 | 656 | int |
6d5786a3 PS |
657 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
658 | const char *fileName, __u16 type, | |
659 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
660 | { |
661 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
662 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
663 | struct unlink_psx_rq *pRqD; | |
664 | int name_len; | |
665 | int rc = 0; | |
666 | int bytes_returned = 0; | |
667 | __u16 params, param_offset, offset, byte_count; | |
668 | ||
f96637be | 669 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
670 | PsxDelete: |
671 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
672 | (void **) &pSMBr); | |
673 | if (rc) | |
674 | return rc; | |
675 | ||
676 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
677 | name_len = | |
acbbb76a SF |
678 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
679 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
680 | name_len++; /* trailing null */ |
681 | name_len *= 2; | |
340625e6 RS |
682 | } else { |
683 | name_len = copy_path_name(pSMB->FileName, fileName); | |
2d785a50 SF |
684 | } |
685 | ||
686 | params = 6 + name_len; | |
687 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
688 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
689 | pSMB->MaxSetupCount = 0; | |
690 | pSMB->Reserved = 0; | |
691 | pSMB->Flags = 0; | |
692 | pSMB->Timeout = 0; | |
693 | pSMB->Reserved2 = 0; | |
694 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
695 | InformationLevel) - 4; | |
696 | offset = param_offset + params; | |
697 | ||
7b09d4e0 SF |
698 | /* Setup pointer to Request Data (inode type). |
699 | * Note that SMB offsets are from the beginning of SMB which is 4 bytes | |
700 | * in, after RFC1001 field | |
701 | */ | |
702 | pRqD = (struct unlink_psx_rq *)((char *)(pSMB) + offset + 4); | |
2d785a50 SF |
703 | pRqD->type = cpu_to_le16(type); |
704 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
705 | pSMB->DataOffset = cpu_to_le16(offset); | |
706 | pSMB->SetupCount = 1; | |
707 | pSMB->Reserved3 = 0; | |
708 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
709 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
710 | ||
711 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
712 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
713 | pSMB->ParameterCount = cpu_to_le16(params); | |
714 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
715 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
716 | pSMB->Reserved4 = 0; | |
be8e3b00 | 717 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
718 | pSMB->ByteCount = cpu_to_le16(byte_count); |
719 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
720 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 721 | if (rc) |
f96637be | 722 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
723 | cifs_buf_release(pSMB); |
724 | ||
44c58186 | 725 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
726 | |
727 | if (rc == -EAGAIN) | |
728 | goto PsxDelete; | |
729 | ||
730 | return rc; | |
731 | } | |
732 | ||
1da177e4 | 733 | int |
ed6875e0 PS |
734 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
735 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
736 | { |
737 | DELETE_FILE_REQ *pSMB = NULL; | |
738 | DELETE_FILE_RSP *pSMBr = NULL; | |
739 | int rc = 0; | |
740 | int bytes_returned; | |
741 | int name_len; | |
2baa2682 | 742 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
743 | |
744 | DelFileRetry: | |
745 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
746 | (void **) &pSMBr); | |
747 | if (rc) | |
748 | return rc; | |
749 | ||
750 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
751 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
752 | PATH_MAX, cifs_sb->local_nls, | |
753 | remap); | |
1da177e4 LT |
754 | name_len++; /* trailing null */ |
755 | name_len *= 2; | |
340625e6 RS |
756 | } else { |
757 | name_len = copy_path_name(pSMB->fileName, name); | |
1da177e4 LT |
758 | } |
759 | pSMB->SearchAttributes = | |
760 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
761 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 762 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
763 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
764 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
765 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 766 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 767 | if (rc) |
f96637be | 768 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
769 | |
770 | cifs_buf_release(pSMB); | |
771 | if (rc == -EAGAIN) | |
772 | goto DelFileRetry; | |
773 | ||
774 | return rc; | |
775 | } | |
776 | ||
777 | int | |
f958ca5d PS |
778 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
779 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
780 | { |
781 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
782 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
783 | int rc = 0; | |
784 | int bytes_returned; | |
785 | int name_len; | |
2baa2682 | 786 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 787 | |
f96637be | 788 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
789 | RmDirRetry: |
790 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
791 | (void **) &pSMBr); | |
792 | if (rc) | |
793 | return rc; | |
794 | ||
795 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
796 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
797 | PATH_MAX, cifs_sb->local_nls, | |
798 | remap); | |
1da177e4 LT |
799 | name_len++; /* trailing null */ |
800 | name_len *= 2; | |
340625e6 RS |
801 | } else { |
802 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
803 | } |
804 | ||
805 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 806 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
807 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
808 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
809 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 810 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 811 | if (rc) |
f96637be | 812 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
813 | |
814 | cifs_buf_release(pSMB); | |
815 | if (rc == -EAGAIN) | |
816 | goto RmDirRetry; | |
817 | return rc; | |
818 | } | |
819 | ||
820 | int | |
c3ca78e2 SF |
821 | CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode, |
822 | struct cifs_tcon *tcon, const char *name, | |
f436720e | 823 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
824 | { |
825 | int rc = 0; | |
826 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
827 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
828 | int bytes_returned; | |
829 | int name_len; | |
2baa2682 | 830 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 831 | |
f96637be | 832 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
833 | MkDirRetry: |
834 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
835 | (void **) &pSMBr); | |
836 | if (rc) | |
837 | return rc; | |
838 | ||
839 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 840 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
841 | PATH_MAX, cifs_sb->local_nls, |
842 | remap); | |
1da177e4 LT |
843 | name_len++; /* trailing null */ |
844 | name_len *= 2; | |
340625e6 RS |
845 | } else { |
846 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
847 | } |
848 | ||
849 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 850 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
851 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
852 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
853 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 854 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 855 | if (rc) |
f96637be | 856 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 857 | |
1da177e4 LT |
858 | cifs_buf_release(pSMB); |
859 | if (rc == -EAGAIN) | |
860 | goto MkDirRetry; | |
861 | return rc; | |
862 | } | |
863 | ||
2dd29d31 | 864 | int |
6d5786a3 PS |
865 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
866 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
867 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
868 | const char *name, const struct nls_table *nls_codepage, | |
869 | int remap) | |
2dd29d31 SF |
870 | { |
871 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
872 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
873 | int name_len; | |
874 | int rc = 0; | |
875 | int bytes_returned = 0; | |
2dd29d31 | 876 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
877 | OPEN_PSX_REQ *pdata; |
878 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 879 | |
f96637be | 880 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
881 | PsxCreat: |
882 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
883 | (void **) &pSMBr); | |
884 | if (rc) | |
885 | return rc; | |
886 | ||
887 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
888 | name_len = | |
acbbb76a SF |
889 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
890 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
891 | name_len++; /* trailing null */ |
892 | name_len *= 2; | |
340625e6 RS |
893 | } else { |
894 | name_len = copy_path_name(pSMB->FileName, name); | |
2dd29d31 SF |
895 | } |
896 | ||
897 | params = 6 + name_len; | |
898 | count = sizeof(OPEN_PSX_REQ); | |
899 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
900 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
901 | pSMB->MaxSetupCount = 0; | |
902 | pSMB->Reserved = 0; | |
903 | pSMB->Flags = 0; | |
904 | pSMB->Timeout = 0; | |
905 | pSMB->Reserved2 = 0; | |
906 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 907 | InformationLevel) - 4; |
2dd29d31 | 908 | offset = param_offset + params; |
21a64910 SF |
909 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
910 | pdata = (OPEN_PSX_REQ *)((char *)(pSMB) + offset + 4); | |
8f2376ad | 911 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 912 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 913 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
914 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
915 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
916 | pSMB->DataOffset = cpu_to_le16(offset); | |
917 | pSMB->SetupCount = 1; | |
918 | pSMB->Reserved3 = 0; | |
919 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
920 | byte_count = 3 /* pad */ + params + count; | |
921 | ||
922 | pSMB->DataCount = cpu_to_le16(count); | |
923 | pSMB->ParameterCount = cpu_to_le16(params); | |
924 | pSMB->TotalDataCount = pSMB->DataCount; | |
925 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
926 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
927 | pSMB->Reserved4 = 0; | |
be8e3b00 | 928 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
929 | pSMB->ByteCount = cpu_to_le16(byte_count); |
930 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
931 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
932 | if (rc) { | |
f96637be | 933 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
934 | goto psx_create_err; |
935 | } | |
936 | ||
f96637be | 937 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
938 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
939 | ||
820a803f | 940 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
941 | rc = -EIO; /* bad smb */ |
942 | goto psx_create_err; | |
943 | } | |
944 | ||
945 | /* copy return information to pRetData */ | |
50c2f753 | 946 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 947 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 948 | |
2dd29d31 | 949 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 950 | if (netfid) |
2dd29d31 SF |
951 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
952 | /* Let caller know file was created so we can set the mode. */ | |
953 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 954 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
955 | *pOplock |= CIFS_CREATE_ACTION; |
956 | /* check to make sure response data is there */ | |
8f2376ad CG |
957 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
958 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 959 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 960 | } else { |
820a803f | 961 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 962 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 963 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 964 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
965 | goto psx_create_err; |
966 | } | |
50c2f753 | 967 | memcpy((char *) pRetData, |
cbac3cba | 968 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 969 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 970 | } |
2dd29d31 SF |
971 | |
972 | psx_create_err: | |
973 | cifs_buf_release(pSMB); | |
974 | ||
65bc98b0 | 975 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 976 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 977 | else |
44c58186 | 978 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
979 | |
980 | if (rc == -EAGAIN) | |
981 | goto PsxCreat; | |
982 | ||
50c2f753 | 983 | return rc; |
2dd29d31 SF |
984 | } |
985 | ||
a9d02ad4 SF |
986 | static __u16 convert_disposition(int disposition) |
987 | { | |
988 | __u16 ofun = 0; | |
989 | ||
990 | switch (disposition) { | |
991 | case FILE_SUPERSEDE: | |
992 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
993 | break; | |
994 | case FILE_OPEN: | |
995 | ofun = SMBOPEN_OAPPEND; | |
996 | break; | |
997 | case FILE_CREATE: | |
998 | ofun = SMBOPEN_OCREATE; | |
999 | break; | |
1000 | case FILE_OPEN_IF: | |
1001 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1002 | break; | |
1003 | case FILE_OVERWRITE: | |
1004 | ofun = SMBOPEN_OTRUNC; | |
1005 | break; | |
1006 | case FILE_OVERWRITE_IF: | |
1007 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1008 | break; | |
1009 | default: | |
f96637be | 1010 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1011 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1012 | } | |
1013 | return ofun; | |
1014 | } | |
1015 | ||
35fc37d5 JL |
1016 | static int |
1017 | access_flags_to_smbopen_mode(const int access_flags) | |
1018 | { | |
1019 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1020 | ||
1021 | if (masked_flags == GENERIC_READ) | |
1022 | return SMBOPEN_READ; | |
1023 | else if (masked_flags == GENERIC_WRITE) | |
1024 | return SMBOPEN_WRITE; | |
1025 | ||
1026 | /* just go for read/write */ | |
1027 | return SMBOPEN_READWRITE; | |
1028 | } | |
1029 | ||
a9d02ad4 | 1030 | int |
6d5786a3 | 1031 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1032 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1033 | const int access_flags, const int create_options, __u16 *netfid, |
1034 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1035 | const struct nls_table *nls_codepage, int remap) |
1036 | { | |
032e091d | 1037 | int rc; |
a9d02ad4 SF |
1038 | OPENX_REQ *pSMB = NULL; |
1039 | OPENX_RSP *pSMBr = NULL; | |
1040 | int bytes_returned; | |
1041 | int name_len; | |
1042 | __u16 count; | |
1043 | ||
1044 | OldOpenRetry: | |
1045 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1046 | (void **) &pSMBr); | |
1047 | if (rc) | |
1048 | return rc; | |
1049 | ||
1050 | pSMB->AndXCommand = 0xFF; /* none */ | |
1051 | ||
1052 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1053 | count = 1; /* account for one byte pad to word boundary */ | |
1054 | name_len = | |
acbbb76a SF |
1055 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1056 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1057 | name_len++; /* trailing null */ |
1058 | name_len *= 2; | |
340625e6 | 1059 | } else { |
a9d02ad4 | 1060 | count = 0; /* no pad */ |
340625e6 | 1061 | name_len = copy_path_name(pSMB->fileName, fileName); |
a9d02ad4 SF |
1062 | } |
1063 | if (*pOplock & REQ_OPLOCK) | |
1064 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1065 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1066 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1067 | |
a9d02ad4 | 1068 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1069 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1070 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1071 | /* set file as system file if special file such | |
1072 | as fifo and server expecting SFU style and | |
1073 | no Unix extensions */ | |
1074 | ||
790fe579 SF |
1075 | if (create_options & CREATE_OPTION_SPECIAL) |
1076 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1077 | else /* BB FIXME BB */ |
1078 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1079 | |
67750fb9 JL |
1080 | if (create_options & CREATE_OPTION_READONLY) |
1081 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1082 | |
1083 | /* BB FIXME BB */ | |
50c2f753 SF |
1084 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1085 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1086 | /* BB FIXME END BB */ |
3e87d803 SF |
1087 | |
1088 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1089 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1090 | count += name_len; |
be8e3b00 | 1091 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1092 | |
1093 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1094 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1095 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1096 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1097 | if (rc) { |
f96637be | 1098 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1099 | } else { |
1100 | /* BB verify if wct == 15 */ | |
1101 | ||
582d21e5 | 1102 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1103 | |
1104 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1105 | /* Let caller know file was created so we can set the mode. */ | |
1106 | /* Do we care about the CreateAction in any other cases? */ | |
1107 | /* BB FIXME BB */ | |
790fe579 | 1108 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1109 | *pOplock |= CIFS_CREATE_ACTION; */ |
1110 | /* BB FIXME END */ | |
1111 | ||
790fe579 | 1112 | if (pfile_info) { |
a9d02ad4 SF |
1113 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1114 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1115 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1116 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1117 | pfile_info->Attributes = |
50c2f753 | 1118 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1119 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1120 | pfile_info->AllocationSize = |
1121 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1122 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1123 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1124 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1125 | } |
1126 | } | |
1127 | ||
1128 | cifs_buf_release(pSMB); | |
1129 | if (rc == -EAGAIN) | |
1130 | goto OldOpenRetry; | |
1131 | return rc; | |
1132 | } | |
1133 | ||
1da177e4 | 1134 | int |
d81b8a40 PS |
1135 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1136 | FILE_ALL_INFO *buf) | |
1da177e4 | 1137 | { |
1afdea4f | 1138 | int rc; |
9bf4fa01 PS |
1139 | OPEN_REQ *req = NULL; |
1140 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1141 | int bytes_returned; |
1142 | int name_len; | |
1143 | __u16 count; | |
d81b8a40 PS |
1144 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1145 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1146 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1147 | const struct nls_table *nls = cifs_sb->local_nls; |
1148 | int create_options = oparms->create_options; | |
1149 | int desired_access = oparms->desired_access; | |
1150 | int disposition = oparms->disposition; | |
1151 | const char *path = oparms->path; | |
1da177e4 LT |
1152 | |
1153 | openRetry: | |
9bf4fa01 PS |
1154 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1155 | (void **)&rsp); | |
1da177e4 LT |
1156 | if (rc) |
1157 | return rc; | |
1158 | ||
9bf4fa01 PS |
1159 | /* no commands go after this */ |
1160 | req->AndXCommand = 0xFF; | |
1da177e4 | 1161 | |
9bf4fa01 PS |
1162 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1163 | /* account for one byte pad to word boundary */ | |
1164 | count = 1; | |
1165 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1166 | path, PATH_MAX, nls, remap); | |
1167 | /* trailing null */ | |
1168 | name_len++; | |
1da177e4 | 1169 | name_len *= 2; |
9bf4fa01 PS |
1170 | req->NameLength = cpu_to_le16(name_len); |
1171 | } else { | |
1172 | /* BB improve check for buffer overruns BB */ | |
1173 | /* no pad */ | |
1174 | count = 0; | |
340625e6 | 1175 | name_len = copy_path_name(req->fileName, path); |
9bf4fa01 | 1176 | req->NameLength = cpu_to_le16(name_len); |
1da177e4 | 1177 | } |
9bf4fa01 PS |
1178 | |
1179 | if (*oplock & REQ_OPLOCK) | |
1180 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1181 | else if (*oplock & REQ_BATCHOPLOCK) | |
1182 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1183 | ||
1184 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1185 | req->AllocationSize = 0; | |
1186 | ||
1187 | /* | |
1188 | * Set file as system file if special file such as fifo and server | |
1189 | * expecting SFU style and no Unix extensions. | |
1190 | */ | |
790fe579 | 1191 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1192 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1193 | else |
9bf4fa01 | 1194 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1195 | |
9bf4fa01 PS |
1196 | /* |
1197 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1198 | * sensitive checks for other servers such as Samba. | |
1199 | */ | |
1da177e4 | 1200 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1201 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1202 | |
67750fb9 | 1203 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1204 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1205 | ||
1206 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1207 | req->CreateDisposition = cpu_to_le32(disposition); | |
1208 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1209 | |
09d1db5c | 1210 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1211 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1212 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1213 | |
1214 | count += name_len; | |
9bf4fa01 | 1215 | inc_rfc1001_len(req, count); |
1da177e4 | 1216 | |
9bf4fa01 PS |
1217 | req->ByteCount = cpu_to_le16(count); |
1218 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1219 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1220 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1221 | if (rc) { |
f96637be | 1222 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1223 | cifs_buf_release(req); |
1224 | if (rc == -EAGAIN) | |
1225 | goto openRetry; | |
1226 | return rc; | |
1da177e4 | 1227 | } |
a5a2b489 | 1228 | |
9bf4fa01 PS |
1229 | /* 1 byte no need to le_to_cpu */ |
1230 | *oplock = rsp->OplockLevel; | |
1231 | /* cifs fid stays in le */ | |
d81b8a40 | 1232 | oparms->fid->netfid = rsp->Fid; |
86f740f2 | 1233 | oparms->fid->access = desired_access; |
9bf4fa01 PS |
1234 | |
1235 | /* Let caller know file was created so we can set the mode. */ | |
1236 | /* Do we care about the CreateAction in any other cases? */ | |
1237 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1238 | *oplock |= CIFS_CREATE_ACTION; | |
1239 | ||
1240 | if (buf) { | |
1241 | /* copy from CreationTime to Attributes */ | |
1242 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1243 | /* the file_info buf is endian converted by caller */ | |
1244 | buf->AllocationSize = rsp->AllocationSize; | |
1245 | buf->EndOfFile = rsp->EndOfFile; | |
1246 | buf->NumberOfLinks = cpu_to_le32(1); | |
1247 | buf->DeletePending = 0; | |
1248 | } | |
1249 | ||
1250 | cifs_buf_release(req); | |
1da177e4 LT |
1251 | return rc; |
1252 | } | |
1253 | ||
e28bc5b1 JL |
1254 | static void |
1255 | cifs_readv_callback(struct mid_q_entry *mid) | |
1256 | { | |
1257 | struct cifs_readdata *rdata = mid->callback_data; | |
1258 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1259 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1260 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1261 | .rq_nvec = 2, | |
d08089f6 DH |
1262 | .rq_iter_size = iov_iter_count(&rdata->iter), |
1263 | .rq_iter = rdata->iter }; | |
34f4deb7 | 1264 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
e28bc5b1 | 1265 | |
f96637be JP |
1266 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1267 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1268 | rdata->bytes); | |
e28bc5b1 | 1269 | |
7c9421e1 | 1270 | switch (mid->mid_state) { |
e28bc5b1 JL |
1271 | case MID_RESPONSE_RECEIVED: |
1272 | /* result already set, check signature */ | |
38d77c50 | 1273 | if (server->sign) { |
985e4ff0 SF |
1274 | int rc = 0; |
1275 | ||
bf5ea0e2 | 1276 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1277 | mid->sequence_number); |
985e4ff0 | 1278 | if (rc) |
f96637be JP |
1279 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1280 | rc); | |
e28bc5b1 JL |
1281 | } |
1282 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1283 | task_io_account_read(rdata->got_bytes); |
1284 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1285 | break; |
1286 | case MID_REQUEST_SUBMITTED: | |
1287 | case MID_RETRY_NEEDED: | |
1288 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1289 | if (server->sign && rdata->got_bytes) |
1290 | /* reset bytes number since we can not check a sign */ | |
1291 | rdata->got_bytes = 0; | |
1292 | /* FIXME: should this be counted toward the initiating task? */ | |
1293 | task_io_account_read(rdata->got_bytes); | |
1294 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1295 | break; |
1296 | default: | |
1297 | rdata->result = -EIO; | |
1298 | } | |
1299 | ||
da472fc8 | 1300 | queue_work(cifsiod_wq, &rdata->work); |
70f08f91 | 1301 | release_mid(mid); |
34f4deb7 | 1302 | add_credits(server, &credits, 0); |
e28bc5b1 JL |
1303 | } |
1304 | ||
1305 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1306 | int | |
1307 | cifs_async_readv(struct cifs_readdata *rdata) | |
1308 | { | |
1309 | int rc; | |
1310 | READ_REQ *smb = NULL; | |
1311 | int wct; | |
1312 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1313 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1314 | .rq_nvec = 2 }; | |
e28bc5b1 | 1315 | |
f96637be JP |
1316 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1317 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1318 | |
1319 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1320 | wct = 12; | |
1321 | else { | |
1322 | wct = 10; /* old style read */ | |
1323 | if ((rdata->offset >> 32) > 0) { | |
1324 | /* can not handle this big offset for old */ | |
1325 | return -EIO; | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1330 | if (rc) | |
1331 | return rc; | |
1332 | ||
1333 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1334 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1335 | ||
1336 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1337 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1338 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1339 | if (wct == 12) | |
1340 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1341 | smb->Remaining = 0; | |
1342 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1343 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1344 | if (wct == 12) | |
1345 | smb->ByteCount = 0; | |
1346 | else { | |
1347 | /* old style read */ | |
1348 | struct smb_com_readx_req *smbr = | |
1349 | (struct smb_com_readx_req *)smb; | |
1350 | smbr->ByteCount = 0; | |
1351 | } | |
1352 | ||
1353 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1354 | rdata->iov[0].iov_base = smb; |
1355 | rdata->iov[0].iov_len = 4; | |
1356 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1357 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1358 | |
6993f74a | 1359 | kref_get(&rdata->refcount); |
fec344e3 | 1360 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
3349c3a7 | 1361 | cifs_readv_callback, NULL, rdata, 0, NULL); |
e28bc5b1 JL |
1362 | |
1363 | if (rc == 0) | |
44c58186 | 1364 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1365 | else |
1366 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1367 | |
1368 | cifs_small_buf_release(smb); | |
1369 | return rc; | |
1370 | } | |
1371 | ||
1da177e4 | 1372 | int |
6d5786a3 PS |
1373 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1374 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1375 | { |
1376 | int rc = -EACCES; | |
1377 | READ_REQ *pSMB = NULL; | |
1378 | READ_RSP *pSMBr = NULL; | |
1379 | char *pReadData = NULL; | |
bfa0d75a | 1380 | int wct; |
ec637e3f SF |
1381 | int resp_buf_type = 0; |
1382 | struct kvec iov[1]; | |
da502f7d | 1383 | struct kvec rsp_iov; |
d4ffff1f PS |
1384 | __u32 pid = io_parms->pid; |
1385 | __u16 netfid = io_parms->netfid; | |
1386 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1387 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1388 | unsigned int count = io_parms->length; |
1da177e4 | 1389 | |
f96637be | 1390 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1391 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1392 | wct = 12; |
4c3130ef | 1393 | else { |
bfa0d75a | 1394 | wct = 10; /* old style read */ |
d4ffff1f | 1395 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1396 | /* can not handle this big offset for old */ |
1397 | return -EIO; | |
1398 | } | |
1399 | } | |
1da177e4 LT |
1400 | |
1401 | *nbytes = 0; | |
ec637e3f | 1402 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1403 | if (rc) |
1404 | return rc; | |
1405 | ||
d4ffff1f PS |
1406 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1407 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1408 | ||
1da177e4 LT |
1409 | /* tcon and ses pointer are checked in smb_init */ |
1410 | if (tcon->ses->server == NULL) | |
1411 | return -ECONNABORTED; | |
1412 | ||
ec637e3f | 1413 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1414 | pSMB->Fid = netfid; |
d4ffff1f | 1415 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1416 | if (wct == 12) |
d4ffff1f | 1417 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1418 | |
1da177e4 LT |
1419 | pSMB->Remaining = 0; |
1420 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1421 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1422 | if (wct == 12) |
bfa0d75a SF |
1423 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1424 | else { | |
1425 | /* old style read */ | |
50c2f753 | 1426 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1427 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1428 | pSMBW->ByteCount = 0; |
bfa0d75a | 1429 | } |
ec637e3f SF |
1430 | |
1431 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1432 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1433 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1434 | CIFS_LOG_ERROR, &rsp_iov); | |
1435 | cifs_small_buf_release(pSMB); | |
44c58186 | 1436 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1437 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1438 | if (rc) { |
f96637be | 1439 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1440 | } else { |
1441 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1442 | data_length = data_length << 16; | |
1443 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1444 | *nbytes = data_length; | |
1445 | ||
1446 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1447 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1448 | || (data_length > count)) { |
f96637be | 1449 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1450 | data_length, count); |
1da177e4 LT |
1451 | rc = -EIO; |
1452 | *nbytes = 0; | |
1453 | } else { | |
ec637e3f | 1454 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1455 | le16_to_cpu(pSMBr->DataOffset); |
1456 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1457 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1458 | rc = -EFAULT; |
26f57364 | 1459 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1460 | if (*buf) |
50c2f753 | 1461 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1462 | } |
1463 | } | |
1da177e4 | 1464 | |
790fe579 | 1465 | if (*buf) { |
da502f7d | 1466 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1467 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1468 | /* return buffer to caller to free */ |
da502f7d | 1469 | *buf = rsp_iov.iov_base; |
790fe579 | 1470 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1471 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1472 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1473 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1474 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1475 | |
1476 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1477 | since file handle passed in no longer valid */ |
1478 | return rc; | |
1479 | } | |
1480 | ||
ec637e3f | 1481 | |
1da177e4 | 1482 | int |
6d5786a3 | 1483 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1484 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1485 | { |
1486 | int rc = -EACCES; | |
1487 | WRITE_REQ *pSMB = NULL; | |
1488 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1489 | int bytes_returned, wct; |
1da177e4 LT |
1490 | __u32 bytes_sent; |
1491 | __u16 byte_count; | |
fa2989f4 PS |
1492 | __u32 pid = io_parms->pid; |
1493 | __u16 netfid = io_parms->netfid; | |
1494 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1495 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1496 | unsigned int count = io_parms->length; |
1da177e4 | 1497 | |
a24e2d7d SF |
1498 | *nbytes = 0; |
1499 | ||
f96637be | 1500 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1501 | if (tcon->ses == NULL) |
1c955187 SF |
1502 | return -ECONNABORTED; |
1503 | ||
790fe579 | 1504 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1505 | wct = 14; |
4c3130ef | 1506 | else { |
1c955187 | 1507 | wct = 12; |
4c3130ef SF |
1508 | if ((offset >> 32) > 0) { |
1509 | /* can not handle big offset for old srv */ | |
1510 | return -EIO; | |
1511 | } | |
1512 | } | |
1c955187 SF |
1513 | |
1514 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1515 | (void **) &pSMBr); |
1516 | if (rc) | |
1517 | return rc; | |
fa2989f4 PS |
1518 | |
1519 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1520 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1521 | ||
1da177e4 LT |
1522 | /* tcon and ses pointer are checked in smb_init */ |
1523 | if (tcon->ses->server == NULL) | |
1524 | return -ECONNABORTED; | |
1525 | ||
1526 | pSMB->AndXCommand = 0xFF; /* none */ | |
1527 | pSMB->Fid = netfid; | |
1528 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1529 | if (wct == 14) |
1c955187 | 1530 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1531 | |
1da177e4 LT |
1532 | pSMB->Reserved = 0xFFFFFFFF; |
1533 | pSMB->WriteMode = 0; | |
1534 | pSMB->Remaining = 0; | |
1535 | ||
50c2f753 | 1536 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1537 | can send more if LARGE_WRITE_X capability returned by the server and if |
1538 | our buffer is big enough or if we convert to iovecs on socket writes | |
1539 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1540 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1541 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1542 | } else { | |
1543 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1544 | & ~0xFF; | |
1545 | } | |
1546 | ||
1547 | if (bytes_sent > count) | |
1548 | bytes_sent = count; | |
1549 | pSMB->DataOffset = | |
50c2f753 | 1550 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1551 | if (buf) |
61e74801 | 1552 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1553 | else if (count != 0) { |
1da177e4 LT |
1554 | /* No buffer */ |
1555 | cifs_buf_release(pSMB); | |
1556 | return -EINVAL; | |
e30dcf3a | 1557 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1558 | if (wct == 14) |
e30dcf3a | 1559 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1560 | else /* wct == 12 */ |
e30dcf3a | 1561 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1562 | |
1da177e4 LT |
1563 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1564 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1565 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1566 | |
790fe579 | 1567 | if (wct == 14) |
1c955187 | 1568 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1569 | else { /* old style write has byte count 4 bytes earlier |
1570 | so 4 bytes pad */ | |
1571 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1572 | (struct smb_com_writex_req *)pSMB; |
1573 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1574 | } | |
1da177e4 LT |
1575 | |
1576 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1577 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1578 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1579 | if (rc) { |
f96637be | 1580 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1581 | } else { |
1582 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1583 | *nbytes = (*nbytes) << 16; | |
1584 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1585 | |
1586 | /* | |
1587 | * Mask off high 16 bits when bytes written as returned by the | |
1588 | * server is greater than bytes requested by the client. Some | |
1589 | * OS/2 servers are known to set incorrect CountHigh values. | |
1590 | */ | |
1591 | if (*nbytes > count) | |
1592 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1593 | } |
1594 | ||
1595 | cifs_buf_release(pSMB); | |
1596 | ||
50c2f753 | 1597 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1598 | since file handle passed in no longer valid */ |
1599 | ||
1600 | return rc; | |
1601 | } | |
1602 | ||
c28c89fc | 1603 | /* |
7c9421e1 | 1604 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1605 | * workqueue completion task. |
1606 | */ | |
1607 | static void | |
1608 | cifs_writev_callback(struct mid_q_entry *mid) | |
1609 | { | |
1610 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1611 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1612 | unsigned int written; |
1613 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
34f4deb7 | 1614 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
c28c89fc | 1615 | |
7c9421e1 | 1616 | switch (mid->mid_state) { |
c28c89fc JL |
1617 | case MID_RESPONSE_RECEIVED: |
1618 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1619 | if (wdata->result != 0) | |
1620 | break; | |
1621 | ||
1622 | written = le16_to_cpu(smb->CountHigh); | |
1623 | written <<= 16; | |
1624 | written += le16_to_cpu(smb->Count); | |
1625 | /* | |
1626 | * Mask off high 16 bits when bytes written as returned | |
1627 | * by the server is greater than bytes requested by the | |
1628 | * client. OS/2 servers are known to set incorrect | |
1629 | * CountHigh values. | |
1630 | */ | |
1631 | if (written > wdata->bytes) | |
1632 | written &= 0xFFFF; | |
1633 | ||
1634 | if (written < wdata->bytes) | |
1635 | wdata->result = -ENOSPC; | |
1636 | else | |
1637 | wdata->bytes = written; | |
1638 | break; | |
1639 | case MID_REQUEST_SUBMITTED: | |
1640 | case MID_RETRY_NEEDED: | |
1641 | wdata->result = -EAGAIN; | |
1642 | break; | |
1643 | default: | |
1644 | wdata->result = -EIO; | |
1645 | break; | |
1646 | } | |
1647 | ||
da472fc8 | 1648 | queue_work(cifsiod_wq, &wdata->work); |
70f08f91 | 1649 | release_mid(mid); |
34f4deb7 | 1650 | add_credits(tcon->ses->server, &credits, 0); |
c28c89fc JL |
1651 | } |
1652 | ||
1653 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
1654 | int | |
4a5c80d7 SF |
1655 | cifs_async_writev(struct cifs_writedata *wdata, |
1656 | void (*release)(struct kref *kref)) | |
c28c89fc | 1657 | { |
eddb079d | 1658 | int rc = -EACCES; |
c28c89fc JL |
1659 | WRITE_REQ *smb = NULL; |
1660 | int wct; | |
96daf2b0 | 1661 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 1662 | struct kvec iov[2]; |
fec344e3 | 1663 | struct smb_rqst rqst = { }; |
c28c89fc JL |
1664 | |
1665 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
1666 | wct = 14; | |
1667 | } else { | |
1668 | wct = 12; | |
1669 | if (wdata->offset >> 32 > 0) { | |
1670 | /* can not handle big offset for old srv */ | |
1671 | return -EIO; | |
1672 | } | |
1673 | } | |
1674 | ||
1675 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
1676 | if (rc) | |
1677 | goto async_writev_out; | |
1678 | ||
fe5f5d2e JL |
1679 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
1680 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 1681 | |
c28c89fc | 1682 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 1683 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
1684 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
1685 | if (wct == 14) | |
1686 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
1687 | smb->Reserved = 0xFFFFFFFF; | |
1688 | smb->WriteMode = 0; | |
1689 | smb->Remaining = 0; | |
1690 | ||
1691 | smb->DataOffset = | |
1692 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1693 | ||
1694 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1695 | iov[0].iov_len = 4; |
1696 | iov[0].iov_base = smb; | |
1697 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
1698 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 1699 | |
738f9de5 PS |
1700 | rqst.rq_iov = iov; |
1701 | rqst.rq_nvec = 2; | |
d08089f6 DH |
1702 | rqst.rq_iter = wdata->iter; |
1703 | rqst.rq_iter_size = iov_iter_count(&wdata->iter); | |
c28c89fc | 1704 | |
f96637be JP |
1705 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
1706 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
1707 | |
1708 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
1709 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
1710 | ||
1711 | if (wct == 14) { | |
1712 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
1713 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
1714 | } else { | |
1715 | /* wct == 12 */ | |
1716 | struct smb_com_writex_req *smbw = | |
1717 | (struct smb_com_writex_req *)smb; | |
1718 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
1719 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 1720 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
1721 | } |
1722 | ||
1723 | kref_get(&wdata->refcount); | |
fec344e3 | 1724 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
3349c3a7 | 1725 | cifs_writev_callback, NULL, wdata, 0, NULL); |
c28c89fc JL |
1726 | |
1727 | if (rc == 0) | |
44c58186 | 1728 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 1729 | else |
4a5c80d7 | 1730 | kref_put(&wdata->refcount, release); |
c28c89fc | 1731 | |
c28c89fc JL |
1732 | async_writev_out: |
1733 | cifs_small_buf_release(smb); | |
c28c89fc JL |
1734 | return rc; |
1735 | } | |
1736 | ||
d6e04ae6 | 1737 | int |
6d5786a3 | 1738 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 1739 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 | 1740 | { |
136a5dc3 | 1741 | int rc; |
1da177e4 | 1742 | WRITE_REQ *pSMB = NULL; |
ec637e3f | 1743 | int wct; |
d6e04ae6 | 1744 | int smb_hdr_len; |
ec637e3f | 1745 | int resp_buf_type = 0; |
fa2989f4 PS |
1746 | __u32 pid = io_parms->pid; |
1747 | __u16 netfid = io_parms->netfid; | |
1748 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1749 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1750 | unsigned int count = io_parms->length; |
da502f7d | 1751 | struct kvec rsp_iov; |
1da177e4 | 1752 | |
fbec9ab9 JL |
1753 | *nbytes = 0; |
1754 | ||
f96637be | 1755 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 1756 | |
4c3130ef | 1757 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1758 | wct = 14; |
4c3130ef | 1759 | } else { |
8cc64c6e | 1760 | wct = 12; |
4c3130ef SF |
1761 | if ((offset >> 32) > 0) { |
1762 | /* can not handle big offset for old srv */ | |
1763 | return -EIO; | |
1764 | } | |
1765 | } | |
8cc64c6e | 1766 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1767 | if (rc) |
1768 | return rc; | |
fa2989f4 PS |
1769 | |
1770 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1771 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1772 | ||
1da177e4 LT |
1773 | /* tcon and ses pointer are checked in smb_init */ |
1774 | if (tcon->ses->server == NULL) | |
1775 | return -ECONNABORTED; | |
1776 | ||
d6e04ae6 | 1777 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1778 | pSMB->Fid = netfid; |
1779 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1780 | if (wct == 14) |
8cc64c6e | 1781 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1782 | pSMB->Reserved = 0xFFFFFFFF; |
1783 | pSMB->WriteMode = 0; | |
1784 | pSMB->Remaining = 0; | |
d6e04ae6 | 1785 | |
1da177e4 | 1786 | pSMB->DataOffset = |
50c2f753 | 1787 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1788 | |
3e84469d SF |
1789 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1790 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1791 | /* header + 1 byte pad */ |
1792 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1793 | if (wct == 14) |
be8e3b00 | 1794 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1795 | else /* wct == 12 */ |
be8e3b00 | 1796 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1797 | if (wct == 14) |
8cc64c6e SF |
1798 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1799 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1800 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1801 | (struct smb_com_writex_req *)pSMB; |
1802 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1803 | } | |
3e84469d | 1804 | iov[0].iov_base = pSMB; |
790fe579 | 1805 | if (wct == 14) |
ec637e3f SF |
1806 | iov[0].iov_len = smb_hdr_len + 4; |
1807 | else /* wct == 12 pad bigger by four bytes */ | |
1808 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1809 | |
da502f7d PS |
1810 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
1811 | &rsp_iov); | |
1812 | cifs_small_buf_release(pSMB); | |
44c58186 | 1813 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1814 | if (rc) { |
f96637be | 1815 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 1816 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1817 | /* presumably this can not happen, but best to be safe */ |
1818 | rc = -EIO; | |
d6e04ae6 | 1819 | } else { |
da502f7d | 1820 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
1821 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1822 | *nbytes = (*nbytes) << 16; | |
1823 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1824 | |
1825 | /* | |
1826 | * Mask off high 16 bits when bytes written as returned by the | |
1827 | * server is greater than bytes requested by the client. OS/2 | |
1828 | * servers are known to set incorrect CountHigh values. | |
1829 | */ | |
1830 | if (*nbytes > count) | |
1831 | *nbytes &= 0xFFFF; | |
50c2f753 | 1832 | } |
1da177e4 | 1833 | |
da502f7d | 1834 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 1835 | |
50c2f753 | 1836 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1837 | since file handle passed in no longer valid */ |
1838 | ||
1839 | return rc; | |
1840 | } | |
d6e04ae6 | 1841 | |
6d5786a3 PS |
1842 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
1843 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
1844 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
1845 | { | |
1846 | int rc = 0; | |
1847 | LOCK_REQ *pSMB = NULL; | |
1848 | struct kvec iov[2]; | |
da502f7d | 1849 | struct kvec rsp_iov; |
9ee305b7 PS |
1850 | int resp_buf_type; |
1851 | __u16 count; | |
1852 | ||
f96637be JP |
1853 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
1854 | num_lock, num_unlock); | |
9ee305b7 PS |
1855 | |
1856 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
1857 | if (rc) | |
1858 | return rc; | |
1859 | ||
1860 | pSMB->Timeout = 0; | |
1861 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
1862 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
1863 | pSMB->LockType = lock_type; | |
1864 | pSMB->AndXCommand = 0xFF; /* none */ | |
1865 | pSMB->Fid = netfid; /* netfid stays le */ | |
1866 | ||
1867 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1868 | inc_rfc1001_len(pSMB, count); | |
1869 | pSMB->ByteCount = cpu_to_le16(count); | |
1870 | ||
1871 | iov[0].iov_base = (char *)pSMB; | |
1872 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
1873 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1874 | iov[1].iov_base = (char *)buf; | |
1875 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1876 | ||
44c58186 | 1877 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
392e1c5d RS |
1878 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, |
1879 | CIFS_NO_RSP_BUF, &rsp_iov); | |
da502f7d | 1880 | cifs_small_buf_release(pSMB); |
9ee305b7 | 1881 | if (rc) |
f96637be | 1882 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
1883 | |
1884 | return rc; | |
1885 | } | |
d6e04ae6 | 1886 | |
1da177e4 | 1887 | int |
6d5786a3 | 1888 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 1889 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 1890 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
1891 | const __u32 numLock, const __u8 lockType, |
1892 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1893 | { |
1894 | int rc = 0; | |
1895 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1896 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 1897 | int bytes_returned; |
a891f0f8 | 1898 | int flags = 0; |
1da177e4 LT |
1899 | __u16 count; |
1900 | ||
f96637be JP |
1901 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
1902 | (int)waitFlag, numLock); | |
46810cbf SF |
1903 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1904 | ||
1da177e4 LT |
1905 | if (rc) |
1906 | return rc; | |
1907 | ||
790fe579 | 1908 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 | 1909 | /* no response expected */ |
392e1c5d | 1910 | flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP; |
1da177e4 | 1911 | pSMB->Timeout = 0; |
4b18f2a9 | 1912 | } else if (waitFlag) { |
a891f0f8 | 1913 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1914 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1915 | } else { | |
1916 | pSMB->Timeout = 0; | |
1917 | } | |
1918 | ||
1919 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1920 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1921 | pSMB->LockType = lockType; | |
12fed00d | 1922 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1923 | pSMB->AndXCommand = 0xFF; /* none */ |
1924 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1925 | ||
790fe579 | 1926 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 1927 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
1928 | /* BB where to store pid high? */ |
1929 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1930 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1931 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1932 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1933 | count = sizeof(LOCKING_ANDX_RANGE); | |
1934 | } else { | |
1935 | /* oplock break */ | |
1936 | count = 0; | |
1937 | } | |
be8e3b00 | 1938 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1939 | pSMB->ByteCount = cpu_to_le16(count); |
1940 | ||
da502f7d | 1941 | if (waitFlag) |
7ee1af76 | 1942 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 1943 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 1944 | else |
a891f0f8 | 1945 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 1946 | cifs_small_buf_release(pSMB); |
44c58186 | 1947 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 1948 | if (rc) |
f96637be | 1949 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 1950 | |
50c2f753 | 1951 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1952 | since file handle passed in no longer valid */ |
1953 | return rc; | |
1954 | } | |
1955 | ||
08547b03 | 1956 | int |
6d5786a3 | 1957 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
1958 | const __u16 smb_file_id, const __u32 netpid, |
1959 | const loff_t start_offset, const __u64 len, | |
1960 | struct file_lock *pLockData, const __u16 lock_type, | |
1961 | const bool waitFlag) | |
08547b03 SF |
1962 | { |
1963 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1964 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1965 | struct cifs_posix_lock *parm_data; |
1966 | int rc = 0; | |
3a5ff61c | 1967 | int timeout = 0; |
08547b03 | 1968 | int bytes_returned = 0; |
133672ef | 1969 | int resp_buf_type = 0; |
08547b03 | 1970 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1971 | struct kvec iov[1]; |
da502f7d | 1972 | struct kvec rsp_iov; |
08547b03 | 1973 | |
f96637be | 1974 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 1975 | |
08547b03 SF |
1976 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1977 | ||
1978 | if (rc) | |
1979 | return rc; | |
1980 | ||
1981 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1982 | ||
50c2f753 | 1983 | params = 6; |
08547b03 SF |
1984 | pSMB->MaxSetupCount = 0; |
1985 | pSMB->Reserved = 0; | |
1986 | pSMB->Flags = 0; | |
08547b03 SF |
1987 | pSMB->Reserved2 = 0; |
1988 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1989 | offset = param_offset + params; | |
1990 | ||
08547b03 SF |
1991 | count = sizeof(struct cifs_posix_lock); |
1992 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1993 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1994 | pSMB->SetupCount = 1; |
1995 | pSMB->Reserved3 = 0; | |
c5fd363d | 1996 | if (pLockData) |
08547b03 SF |
1997 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1998 | else | |
1999 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2000 | byte_count = 3 /* pad */ + params + count; | |
2001 | pSMB->DataCount = cpu_to_le16(count); | |
2002 | pSMB->ParameterCount = cpu_to_le16(params); | |
2003 | pSMB->TotalDataCount = pSMB->DataCount; | |
2004 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2005 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
d4dc277c | 2006 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
50c2f753 | 2007 | parm_data = (struct cifs_posix_lock *) |
d4dc277c | 2008 | (((char *)pSMB) + offset + 4); |
08547b03 SF |
2009 | |
2010 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2011 | if (waitFlag) { |
133672ef | 2012 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2013 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2014 | pSMB->Timeout = cpu_to_le32(-1); |
2015 | } else | |
2016 | pSMB->Timeout = 0; | |
2017 | ||
4f6bcec9 | 2018 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2019 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2020 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2021 | |
2022 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2023 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2024 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2025 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2026 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2027 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2028 | if (waitFlag) { |
2029 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2030 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2031 | } else { | |
133672ef | 2032 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2033 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2034 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2035 | &resp_buf_type, timeout, &rsp_iov); |
2036 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2037 | } |
da502f7d | 2038 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2039 | |
08547b03 | 2040 | if (rc) { |
f96637be | 2041 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2042 | } else if (pLockData) { |
fc94cdb9 SF |
2043 | /* lock structure can be returned on get */ |
2044 | __u16 data_offset; | |
2045 | __u16 data_count; | |
2046 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2047 | ||
820a803f | 2048 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2049 | rc = -EIO; /* bad smb */ |
2050 | goto plk_err_exit; | |
2051 | } | |
fc94cdb9 SF |
2052 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2053 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2054 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2055 | rc = -EIO; |
2056 | goto plk_err_exit; | |
2057 | } | |
2058 | parm_data = (struct cifs_posix_lock *) | |
2059 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2060 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2061 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2062 | else { |
2063 | if (parm_data->lock_type == | |
bc09d141 | 2064 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2065 | pLockData->fl_type = F_RDLCK; |
2066 | else if (parm_data->lock_type == | |
bc09d141 | 2067 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2068 | pLockData->fl_type = F_WRLCK; |
2069 | ||
5443d130 SF |
2070 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2071 | pLockData->fl_end = pLockData->fl_start + | |
d80c6984 PA |
2072 | (le64_to_cpu(parm_data->length) ? |
2073 | le64_to_cpu(parm_data->length) - 1 : 0); | |
9d5b86ac | 2074 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2075 | } |
08547b03 | 2076 | } |
50c2f753 | 2077 | |
fc94cdb9 | 2078 | plk_err_exit: |
da502f7d | 2079 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2080 | |
08547b03 SF |
2081 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2082 | since file handle passed in no longer valid */ | |
2083 | ||
2084 | return rc; | |
2085 | } | |
2086 | ||
2087 | ||
1da177e4 | 2088 | int |
6d5786a3 | 2089 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2090 | { |
2091 | int rc = 0; | |
2092 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2093 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2094 | |
2095 | /* do not retry on dead session on close */ | |
2096 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2097 | if (rc == -EAGAIN) |
1da177e4 LT |
2098 | return 0; |
2099 | if (rc) | |
2100 | return rc; | |
2101 | ||
1da177e4 | 2102 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2103 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2104 | pSMB->ByteCount = 0; |
792af7b0 | 2105 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2106 | cifs_small_buf_release(pSMB); |
44c58186 | 2107 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2108 | if (rc) { |
790fe579 | 2109 | if (rc != -EINTR) { |
1da177e4 | 2110 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2111 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2112 | } |
2113 | } | |
2114 | ||
1da177e4 | 2115 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2116 | if (rc == -EAGAIN) |
1da177e4 LT |
2117 | rc = 0; |
2118 | ||
2119 | return rc; | |
2120 | } | |
2121 | ||
b298f223 | 2122 | int |
6d5786a3 | 2123 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2124 | { |
2125 | int rc = 0; | |
2126 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2127 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2128 | |
2129 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2130 | if (rc) | |
2131 | return rc; | |
2132 | ||
2133 | pSMB->FileID = (__u16) smb_file_id; | |
2134 | pSMB->ByteCount = 0; | |
792af7b0 | 2135 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2136 | cifs_small_buf_release(pSMB); |
44c58186 | 2137 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2138 | if (rc) |
f96637be | 2139 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2140 | |
2141 | return rc; | |
2142 | } | |
2143 | ||
1da177e4 | 2144 | int |
6d5786a3 | 2145 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2146 | const char *from_name, const char *to_name, |
2147 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2148 | { |
2149 | int rc = 0; | |
2150 | RENAME_REQ *pSMB = NULL; | |
2151 | RENAME_RSP *pSMBr = NULL; | |
2152 | int bytes_returned; | |
2153 | int name_len, name_len2; | |
2154 | __u16 count; | |
2baa2682 | 2155 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2156 | |
f96637be | 2157 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2158 | renameRetry: |
2159 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2160 | (void **) &pSMBr); | |
2161 | if (rc) | |
2162 | return rc; | |
2163 | ||
2164 | pSMB->BufferFormat = 0x04; | |
2165 | pSMB->SearchAttributes = | |
2166 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2167 | ATTR_DIRECTORY); | |
2168 | ||
2169 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2170 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2171 | from_name, PATH_MAX, | |
2172 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2173 | name_len++; /* trailing null */ |
2174 | name_len *= 2; | |
2175 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2176 | /* protocol requires ASCII signature byte on Unicode string */ | |
2177 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2178 | name_len2 = | |
acbbb76a | 2179 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2180 | to_name, PATH_MAX, cifs_sb->local_nls, |
2181 | remap); | |
1da177e4 LT |
2182 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2183 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2184 | } else { |
2185 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
2186 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); | |
1da177e4 | 2187 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
1da177e4 LT |
2188 | name_len2++; /* signature byte */ |
2189 | } | |
2190 | ||
2191 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2192 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2193 | pSMB->ByteCount = cpu_to_le16(count); |
2194 | ||
2195 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2196 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2197 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2198 | if (rc) |
f96637be | 2199 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2200 | |
1da177e4 LT |
2201 | cifs_buf_release(pSMB); |
2202 | ||
2203 | if (rc == -EAGAIN) | |
2204 | goto renameRetry; | |
2205 | ||
2206 | return rc; | |
2207 | } | |
2208 | ||
6d5786a3 | 2209 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2210 | int netfid, const char *target_name, |
50c2f753 | 2211 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2212 | { |
2213 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2214 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2215 | struct set_file_rename *rename_info; |
1da177e4 LT |
2216 | char *data_offset; |
2217 | char dummy_string[30]; | |
2218 | int rc = 0; | |
2219 | int bytes_returned = 0; | |
2220 | int len_of_str; | |
2221 | __u16 params, param_offset, offset, count, byte_count; | |
2222 | ||
f96637be | 2223 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2224 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2225 | (void **) &pSMBr); | |
2226 | if (rc) | |
2227 | return rc; | |
2228 | ||
2229 | params = 6; | |
2230 | pSMB->MaxSetupCount = 0; | |
2231 | pSMB->Reserved = 0; | |
2232 | pSMB->Flags = 0; | |
2233 | pSMB->Timeout = 0; | |
2234 | pSMB->Reserved2 = 0; | |
2235 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2236 | offset = param_offset + params; | |
2237 | ||
f371793d SF |
2238 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2239 | data_offset = (char *)(pSMB) + offset + 4; | |
1da177e4 LT |
2240 | rename_info = (struct set_file_rename *) data_offset; |
2241 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2242 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2243 | pSMB->SetupCount = 1; |
2244 | pSMB->Reserved3 = 0; | |
2245 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2246 | byte_count = 3 /* pad */ + params; | |
2247 | pSMB->ParameterCount = cpu_to_le16(params); | |
2248 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2249 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2250 | pSMB->DataOffset = cpu_to_le16(offset); | |
2251 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2252 | rename_info->overwrite = cpu_to_le32(1); | |
2253 | rename_info->root_fid = 0; | |
2254 | /* unicode only call */ | |
790fe579 | 2255 | if (target_name == NULL) { |
50c2f753 | 2256 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2257 | len_of_str = |
2258 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2259 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2260 | } else { |
acbbb76a SF |
2261 | len_of_str = |
2262 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2263 | target_name, PATH_MAX, nls_codepage, |
2264 | remap); | |
1da177e4 LT |
2265 | } |
2266 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
d7173623 | 2267 | count = sizeof(struct set_file_rename) + (2 * len_of_str); |
1da177e4 LT |
2268 | byte_count += count; |
2269 | pSMB->DataCount = cpu_to_le16(count); | |
2270 | pSMB->TotalDataCount = pSMB->DataCount; | |
2271 | pSMB->Fid = netfid; | |
2272 | pSMB->InformationLevel = | |
2273 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2274 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2275 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2276 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2277 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2278 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2279 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2280 | if (rc) |
f96637be JP |
2281 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2282 | rc); | |
a5a2b489 | 2283 | |
1da177e4 LT |
2284 | cifs_buf_release(pSMB); |
2285 | ||
2286 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2287 | since file handle passed in no longer valid */ | |
2288 | ||
2289 | return rc; | |
2290 | } | |
2291 | ||
2292 | int | |
6d5786a3 PS |
2293 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2294 | const char *fromName, const __u16 target_tid, const char *toName, | |
2295 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2296 | { |
2297 | int rc = 0; | |
2298 | COPY_REQ *pSMB = NULL; | |
2299 | COPY_RSP *pSMBr = NULL; | |
2300 | int bytes_returned; | |
2301 | int name_len, name_len2; | |
2302 | __u16 count; | |
2303 | ||
f96637be | 2304 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2305 | copyRetry: |
2306 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2307 | (void **) &pSMBr); | |
2308 | if (rc) | |
2309 | return rc; | |
2310 | ||
2311 | pSMB->BufferFormat = 0x04; | |
2312 | pSMB->Tid2 = target_tid; | |
2313 | ||
2314 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2315 | ||
2316 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2317 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2318 | fromName, PATH_MAX, nls_codepage, | |
2319 | remap); | |
1da177e4 LT |
2320 | name_len++; /* trailing null */ |
2321 | name_len *= 2; | |
2322 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2323 | /* protocol requires ASCII signature byte on Unicode string */ | |
2324 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2325 | name_len2 = |
acbbb76a SF |
2326 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2327 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2328 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2329 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2330 | } else { |
2331 | name_len = copy_path_name(pSMB->OldFileName, fromName); | |
1da177e4 | 2332 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2333 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName); |
1da177e4 LT |
2334 | name_len2++; /* signature byte */ |
2335 | } | |
2336 | ||
2337 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2338 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2339 | pSMB->ByteCount = cpu_to_le16(count); |
2340 | ||
2341 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2342 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2343 | if (rc) { | |
f96637be JP |
2344 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2345 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2346 | } |
0d817bc0 | 2347 | cifs_buf_release(pSMB); |
1da177e4 LT |
2348 | |
2349 | if (rc == -EAGAIN) | |
2350 | goto copyRetry; | |
2351 | ||
2352 | return rc; | |
2353 | } | |
2354 | ||
2355 | int | |
6d5786a3 | 2356 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2357 | const char *fromName, const char *toName, |
bc8ebdc4 | 2358 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2359 | { |
2360 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2361 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2362 | char *data_offset; | |
2363 | int name_len; | |
2364 | int name_len_target; | |
2365 | int rc = 0; | |
2366 | int bytes_returned = 0; | |
2367 | __u16 params, param_offset, offset, byte_count; | |
2368 | ||
f96637be | 2369 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2370 | createSymLinkRetry: |
2371 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2372 | (void **) &pSMBr); | |
2373 | if (rc) | |
2374 | return rc; | |
2375 | ||
2376 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2377 | name_len = | |
bc8ebdc4 NA |
2378 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2379 | /* find define for this maxpathcomponent */ | |
2380 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2381 | name_len++; /* trailing null */ |
2382 | name_len *= 2; | |
2383 | ||
340625e6 RS |
2384 | } else { |
2385 | name_len = copy_path_name(pSMB->FileName, fromName); | |
1da177e4 LT |
2386 | } |
2387 | params = 6 + name_len; | |
2388 | pSMB->MaxSetupCount = 0; | |
2389 | pSMB->Reserved = 0; | |
2390 | pSMB->Flags = 0; | |
2391 | pSMB->Timeout = 0; | |
2392 | pSMB->Reserved2 = 0; | |
2393 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2394 | InformationLevel) - 4; |
1da177e4 LT |
2395 | offset = param_offset + params; |
2396 | ||
ded2d99c SF |
2397 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2398 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2399 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2400 | name_len_target = | |
bc8ebdc4 NA |
2401 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2402 | /* find define for this maxpathcomponent */ | |
2403 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2404 | name_len_target++; /* trailing null */ |
2405 | name_len_target *= 2; | |
340625e6 RS |
2406 | } else { |
2407 | name_len_target = copy_path_name(data_offset, toName); | |
1da177e4 LT |
2408 | } |
2409 | ||
2410 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2411 | /* BB find exact max on data count below from sess */ | |
2412 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2413 | pSMB->SetupCount = 1; | |
2414 | pSMB->Reserved3 = 0; | |
2415 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2416 | byte_count = 3 /* pad */ + params + name_len_target; | |
2417 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2418 | pSMB->ParameterCount = cpu_to_le16(params); | |
2419 | pSMB->TotalDataCount = pSMB->DataCount; | |
2420 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2421 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2422 | pSMB->DataOffset = cpu_to_le16(offset); | |
2423 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2424 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2425 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2426 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2427 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2428 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2429 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2430 | if (rc) |
f96637be JP |
2431 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2432 | rc); | |
1da177e4 | 2433 | |
0d817bc0 | 2434 | cifs_buf_release(pSMB); |
1da177e4 LT |
2435 | |
2436 | if (rc == -EAGAIN) | |
2437 | goto createSymLinkRetry; | |
2438 | ||
2439 | return rc; | |
2440 | } | |
2441 | ||
2442 | int | |
6d5786a3 | 2443 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2444 | const char *fromName, const char *toName, |
737b758c | 2445 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2446 | { |
2447 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2448 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2449 | char *data_offset; | |
2450 | int name_len; | |
2451 | int name_len_target; | |
2452 | int rc = 0; | |
2453 | int bytes_returned = 0; | |
2454 | __u16 params, param_offset, offset, byte_count; | |
2455 | ||
f96637be | 2456 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2457 | createHardLinkRetry: |
2458 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2459 | (void **) &pSMBr); | |
2460 | if (rc) | |
2461 | return rc; | |
2462 | ||
2463 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2464 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2465 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2466 | name_len++; /* trailing null */ |
2467 | name_len *= 2; | |
2468 | ||
340625e6 RS |
2469 | } else { |
2470 | name_len = copy_path_name(pSMB->FileName, toName); | |
1da177e4 LT |
2471 | } |
2472 | params = 6 + name_len; | |
2473 | pSMB->MaxSetupCount = 0; | |
2474 | pSMB->Reserved = 0; | |
2475 | pSMB->Flags = 0; | |
2476 | pSMB->Timeout = 0; | |
2477 | pSMB->Reserved2 = 0; | |
2478 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2479 | InformationLevel) - 4; |
1da177e4 LT |
2480 | offset = param_offset + params; |
2481 | ||
819f916c SF |
2482 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2483 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2484 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2485 | name_len_target = | |
acbbb76a SF |
2486 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2487 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2488 | name_len_target++; /* trailing null */ |
2489 | name_len_target *= 2; | |
340625e6 RS |
2490 | } else { |
2491 | name_len_target = copy_path_name(data_offset, fromName); | |
1da177e4 LT |
2492 | } |
2493 | ||
2494 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2495 | /* BB find exact max on data count below from sess*/ | |
2496 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2497 | pSMB->SetupCount = 1; | |
2498 | pSMB->Reserved3 = 0; | |
2499 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2500 | byte_count = 3 /* pad */ + params + name_len_target; | |
2501 | pSMB->ParameterCount = cpu_to_le16(params); | |
2502 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2503 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2504 | pSMB->TotalDataCount = pSMB->DataCount; | |
2505 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2506 | pSMB->DataOffset = cpu_to_le16(offset); | |
2507 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2508 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2509 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2510 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2511 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2512 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2513 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2514 | if (rc) |
f96637be JP |
2515 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2516 | rc); | |
1da177e4 LT |
2517 | |
2518 | cifs_buf_release(pSMB); | |
2519 | if (rc == -EAGAIN) | |
2520 | goto createHardLinkRetry; | |
2521 | ||
2522 | return rc; | |
2523 | } | |
2524 | ||
2525 | int | |
6d5786a3 | 2526 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2527 | const char *from_name, const char *to_name, |
2528 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2529 | { |
2530 | int rc = 0; | |
2531 | NT_RENAME_REQ *pSMB = NULL; | |
2532 | RENAME_RSP *pSMBr = NULL; | |
2533 | int bytes_returned; | |
2534 | int name_len, name_len2; | |
2535 | __u16 count; | |
2baa2682 | 2536 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2537 | |
f96637be | 2538 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2539 | winCreateHardLinkRetry: |
2540 | ||
2541 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2542 | (void **) &pSMBr); | |
2543 | if (rc) | |
2544 | return rc; | |
2545 | ||
2546 | pSMB->SearchAttributes = | |
2547 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2548 | ATTR_DIRECTORY); | |
2549 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2550 | pSMB->ClusterCount = 0; | |
2551 | ||
2552 | pSMB->BufferFormat = 0x04; | |
2553 | ||
2554 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2555 | name_len = | |
d6e906f1 SF |
2556 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2557 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2558 | name_len++; /* trailing null */ |
2559 | name_len *= 2; | |
fcc7c09d JL |
2560 | |
2561 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2562 | pSMB->OldFileName[name_len] = 0x04; | |
2563 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2564 | name_len2 = |
acbbb76a | 2565 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2566 | to_name, PATH_MAX, cifs_sb->local_nls, |
2567 | remap); | |
1da177e4 LT |
2568 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2569 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2570 | } else { |
2571 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
1da177e4 | 2572 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2573 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
1da177e4 LT |
2574 | name_len2++; /* signature byte */ |
2575 | } | |
2576 | ||
2577 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2578 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2579 | pSMB->ByteCount = cpu_to_le16(count); |
2580 | ||
2581 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2582 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2583 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2584 | if (rc) |
f96637be | 2585 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 2586 | |
1da177e4 LT |
2587 | cifs_buf_release(pSMB); |
2588 | if (rc == -EAGAIN) | |
2589 | goto winCreateHardLinkRetry; | |
2590 | ||
2591 | return rc; | |
2592 | } | |
2593 | ||
2594 | int | |
6d5786a3 | 2595 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2596 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 2597 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2598 | { |
2599 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2600 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2601 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2602 | int rc = 0; | |
2603 | int bytes_returned; | |
2604 | int name_len; | |
2605 | __u16 params, byte_count; | |
460b9696 | 2606 | char *data_start; |
1da177e4 | 2607 | |
f96637be | 2608 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
2609 | |
2610 | querySymLinkRetry: | |
2611 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2612 | (void **) &pSMBr); | |
2613 | if (rc) | |
2614 | return rc; | |
2615 | ||
2616 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2617 | name_len = | |
bc8ebdc4 NA |
2618 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
2619 | searchName, PATH_MAX, nls_codepage, | |
2620 | remap); | |
1da177e4 LT |
2621 | name_len++; /* trailing null */ |
2622 | name_len *= 2; | |
340625e6 RS |
2623 | } else { |
2624 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
2625 | } |
2626 | ||
2627 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2628 | pSMB->TotalDataCount = 0; | |
2629 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2630 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2631 | pSMB->MaxSetupCount = 0; |
2632 | pSMB->Reserved = 0; | |
2633 | pSMB->Flags = 0; | |
2634 | pSMB->Timeout = 0; | |
2635 | pSMB->Reserved2 = 0; | |
2636 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2637 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2638 | pSMB->DataCount = 0; |
2639 | pSMB->DataOffset = 0; | |
2640 | pSMB->SetupCount = 1; | |
2641 | pSMB->Reserved3 = 0; | |
2642 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2643 | byte_count = params + 1 /* pad */ ; | |
2644 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2645 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2646 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2647 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2648 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2649 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2650 | ||
2651 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2652 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2653 | if (rc) { | |
f96637be | 2654 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
2655 | } else { |
2656 | /* decode response */ | |
2657 | ||
2658 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2659 | /* BB also check enough total bytes returned */ |
820a803f | 2660 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2661 | rc = -EIO; |
1da177e4 | 2662 | else { |
0e0d2cf3 | 2663 | bool is_unicode; |
460b9696 JL |
2664 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2665 | ||
2666 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2667 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2668 | |
0e0d2cf3 SF |
2669 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2670 | is_unicode = true; | |
2671 | else | |
2672 | is_unicode = false; | |
2673 | ||
737b758c | 2674 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
2675 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
2676 | count, is_unicode, nls_codepage); | |
8b6427a2 | 2677 | if (!*symlinkinfo) |
460b9696 | 2678 | rc = -ENOMEM; |
1da177e4 LT |
2679 | } |
2680 | } | |
2681 | cifs_buf_release(pSMB); | |
2682 | if (rc == -EAGAIN) | |
2683 | goto querySymLinkRetry; | |
2684 | return rc; | |
2685 | } | |
2686 | ||
c52a9554 SF |
2687 | /* |
2688 | * Recent Windows versions now create symlinks more frequently | |
2689 | * and they use the "reparse point" mechanism below. We can of course | |
2690 | * do symlinks nicely to Samba and other servers which support the | |
2691 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2692 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2693 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2694 | * In the interim this code has been moved to its own config option so | |
2695 | * it is not compiled in by default until callers fixed up and more tested. | |
2696 | */ | |
1da177e4 | 2697 | int |
d244bf2d PS |
2698 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
2699 | __u16 fid, char **symlinkinfo, | |
2700 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
2701 | { |
2702 | int rc = 0; | |
2703 | int bytes_returned; | |
50c2f753 SF |
2704 | struct smb_com_transaction_ioctl_req *pSMB; |
2705 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
2706 | bool is_unicode; |
2707 | unsigned int sub_len; | |
2708 | char *sub_start; | |
c31f3307 SF |
2709 | struct reparse_symlink_data *reparse_buf; |
2710 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
2711 | __u32 data_offset, data_count; |
2712 | char *end_of_smb; | |
2713 | ||
2714 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
2715 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2716 | (void **) &pSMBr); | |
2717 | if (rc) | |
2718 | return rc; | |
2719 | ||
2720 | pSMB->TotalParameterCount = 0 ; | |
2721 | pSMB->TotalDataCount = 0; | |
2722 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2723 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 2724 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
2725 | pSMB->MaxSetupCount = 4; |
2726 | pSMB->Reserved = 0; | |
2727 | pSMB->ParameterOffset = 0; | |
2728 | pSMB->DataCount = 0; | |
2729 | pSMB->DataOffset = 0; | |
2730 | pSMB->SetupCount = 4; | |
2731 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2732 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2733 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2734 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2735 | pSMB->IsRootFlag = 0; | |
2736 | pSMB->Fid = fid; /* file handle always le */ | |
2737 | pSMB->ByteCount = 0; | |
2738 | ||
2739 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2740 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2741 | if (rc) { | |
f96637be | 2742 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
2743 | goto qreparse_out; |
2744 | } | |
2745 | ||
2746 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2747 | data_count = le32_to_cpu(pSMBr->DataCount); | |
2748 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
2749 | /* BB also check enough total bytes returned */ | |
2750 | rc = -EIO; /* bad smb */ | |
2751 | goto qreparse_out; | |
2752 | } | |
2753 | if (!data_count || (data_count > 2048)) { | |
2754 | rc = -EIO; | |
2755 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
2756 | goto qreparse_out; | |
2757 | } | |
2758 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 2759 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
2760 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
2761 | if ((char *)reparse_buf >= end_of_smb) { | |
2762 | rc = -EIO; | |
2763 | goto qreparse_out; | |
1da177e4 | 2764 | } |
c31f3307 SF |
2765 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
2766 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
2767 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
2768 | ||
2769 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
2770 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
2771 | le64_to_cpu(posix_buf->InodeType)); | |
2772 | rc = -EOPNOTSUPP; | |
2773 | goto qreparse_out; | |
2774 | } | |
2775 | is_unicode = true; | |
2776 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
2777 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
2778 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
2779 | rc = -EIO; | |
2780 | goto qreparse_out; | |
2781 | } | |
2782 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
2783 | sub_len, is_unicode, nls_codepage); | |
2784 | goto qreparse_out; | |
2785 | } else if (reparse_buf->ReparseTag != | |
2786 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
2787 | rc = -EOPNOTSUPP; | |
2788 | goto qreparse_out; | |
2789 | } | |
2790 | ||
2791 | /* Reparse tag is NTFS symlink */ | |
2792 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
2793 | reparse_buf->PathBuffer; | |
2794 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
2795 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
2796 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
2797 | rc = -EIO; | |
2798 | goto qreparse_out; | |
2799 | } | |
d244bf2d PS |
2800 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2801 | is_unicode = true; | |
2802 | else | |
2803 | is_unicode = false; | |
989c7e51 | 2804 | |
d244bf2d PS |
2805 | /* BB FIXME investigate remapping reserved chars here */ |
2806 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
2807 | nls_codepage); | |
2808 | if (!*symlinkinfo) | |
2809 | rc = -ENOMEM; | |
1da177e4 | 2810 | qreparse_out: |
4a6d87f1 | 2811 | cifs_buf_release(pSMB); |
1da177e4 | 2812 | |
d244bf2d PS |
2813 | /* |
2814 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2815 | * since file handle passed in no longer valid. | |
2816 | */ | |
1da177e4 LT |
2817 | return rc; |
2818 | } | |
2819 | ||
c7f508a9 SF |
2820 | int |
2821 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
2822 | __u16 fid) | |
2823 | { | |
2824 | int rc = 0; | |
2825 | int bytes_returned; | |
2826 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
2827 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
2828 | ||
2829 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
2830 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2831 | (void **) &pSMBr); | |
2832 | if (rc) | |
2833 | return rc; | |
2834 | ||
2835 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
2836 | ||
2837 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 2838 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
2839 | pSMB->MaxParameterCount = 0; |
2840 | pSMB->MaxDataCount = 0; | |
2841 | pSMB->MaxSetupCount = 4; | |
2842 | pSMB->Reserved = 0; | |
2843 | pSMB->ParameterOffset = 0; | |
bc09d141 | 2844 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
2845 | pSMB->DataOffset = |
2846 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
2847 | compression_state) - 4); /* 84 */ | |
2848 | pSMB->SetupCount = 4; | |
bc09d141 | 2849 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 2850 | pSMB->ParameterCount = 0; |
bc09d141 | 2851 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
2852 | pSMB->IsFsctl = 1; /* FSCTL */ |
2853 | pSMB->IsRootFlag = 0; | |
2854 | pSMB->Fid = fid; /* file handle always le */ | |
2855 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 2856 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
2857 | inc_rfc1001_len(pSMB, 5); |
2858 | ||
2859 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2860 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2861 | if (rc) | |
2862 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
2863 | ||
2864 | cifs_buf_release(pSMB); | |
2865 | ||
2866 | /* | |
2867 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2868 | * since file handle passed in no longer valid. | |
2869 | */ | |
2870 | return rc; | |
2871 | } | |
2872 | ||
2873 | ||
1da177e4 LT |
2874 | #ifdef CONFIG_CIFS_POSIX |
2875 | ||
bd9684b0 CB |
2876 | #ifdef CONFIG_FS_POSIX_ACL |
2877 | /** | |
2878 | * cifs_init_posix_acl - convert ACL from cifs to POSIX ACL format | |
2879 | * @ace: POSIX ACL entry to store converted ACL into | |
2880 | * @cifs_ace: ACL in cifs format | |
2881 | * | |
2882 | * Convert an Access Control Entry from wire format to local POSIX xattr | |
2883 | * format. | |
2884 | * | |
2885 | * Note that the @cifs_uid member is used to store both {g,u}id_t. | |
2886 | */ | |
2887 | static void cifs_init_posix_acl(struct posix_acl_entry *ace, | |
2888 | struct cifs_posix_ace *cifs_ace) | |
2889 | { | |
2890 | /* u8 cifs fields do not need le conversion */ | |
2891 | ace->e_perm = cifs_ace->cifs_e_perm; | |
2892 | ace->e_tag = cifs_ace->cifs_e_tag; | |
2893 | ||
2894 | switch (ace->e_tag) { | |
2895 | case ACL_USER: | |
2896 | ace->e_uid = make_kuid(&init_user_ns, | |
2897 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2898 | break; | |
2899 | case ACL_GROUP: | |
2900 | ace->e_gid = make_kgid(&init_user_ns, | |
2901 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2902 | break; | |
2903 | } | |
2904 | return; | |
2905 | } | |
2906 | ||
2907 | /** | |
2908 | * cifs_to_posix_acl - copy cifs ACL format to POSIX ACL format | |
2909 | * @acl: ACLs returned in POSIX ACL format | |
2910 | * @src: ACLs in cifs format | |
2911 | * @acl_type: type of POSIX ACL requested | |
2912 | * @size_of_data_area: size of SMB we got | |
2913 | * | |
2914 | * This function converts ACLs from cifs format to POSIX ACL format. | |
2915 | * If @acl is NULL then the size of the buffer required to store POSIX ACLs in | |
2916 | * their uapi format is returned. | |
2917 | */ | |
2918 | static int cifs_to_posix_acl(struct posix_acl **acl, char *src, | |
2919 | const int acl_type, const int size_of_data_area) | |
2920 | { | |
2921 | int size = 0; | |
2922 | __u16 count; | |
2923 | struct cifs_posix_ace *pACE; | |
2924 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2925 | struct posix_acl *kacl = NULL; | |
2926 | struct posix_acl_entry *pa, *pe; | |
2927 | ||
2928 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2929 | return -EOPNOTSUPP; | |
2930 | ||
2931 | if (acl_type == ACL_TYPE_ACCESS) { | |
2932 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2933 | pACE = &cifs_acl->ace_array[0]; | |
2934 | size = sizeof(struct cifs_posix_acl); | |
2935 | size += sizeof(struct cifs_posix_ace) * count; | |
2936 | /* check if we would go beyond end of SMB */ | |
2937 | if (size_of_data_area < size) { | |
2938 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", | |
2939 | size_of_data_area, size); | |
2940 | return -EINVAL; | |
2941 | } | |
2942 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
2943 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2944 | size = sizeof(struct cifs_posix_acl); | |
2945 | size += sizeof(struct cifs_posix_ace) * count; | |
2946 | /* skip past access ACEs to get to default ACEs */ | |
2947 | pACE = &cifs_acl->ace_array[count]; | |
2948 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2949 | size += sizeof(struct cifs_posix_ace) * count; | |
2950 | /* check if we would go beyond end of SMB */ | |
2951 | if (size_of_data_area < size) | |
2952 | return -EINVAL; | |
2953 | } else { | |
2954 | /* illegal type */ | |
2955 | return -EINVAL; | |
2956 | } | |
2957 | ||
2958 | /* Allocate number of POSIX ACLs to store in VFS format. */ | |
2959 | kacl = posix_acl_alloc(count, GFP_NOFS); | |
2960 | if (!kacl) | |
2961 | return -ENOMEM; | |
2962 | ||
2963 | FOREACH_ACL_ENTRY(pa, kacl, pe) { | |
2964 | cifs_init_posix_acl(pa, pACE); | |
2965 | pACE++; | |
2966 | } | |
2967 | ||
2968 | *acl = kacl; | |
2969 | return 0; | |
2970 | } | |
2971 | ||
dc1af4c4 CB |
2972 | /** |
2973 | * cifs_init_ace - convert ACL entry from POSIX ACL to cifs format | |
2974 | * @cifs_ace: the cifs ACL entry to store into | |
2975 | * @local_ace: the POSIX ACL entry to convert | |
2976 | */ | |
2977 | static void cifs_init_ace(struct cifs_posix_ace *cifs_ace, | |
2978 | const struct posix_acl_entry *local_ace) | |
2979 | { | |
2980 | cifs_ace->cifs_e_perm = local_ace->e_perm; | |
2981 | cifs_ace->cifs_e_tag = local_ace->e_tag; | |
2982 | ||
2983 | switch (local_ace->e_tag) { | |
2984 | case ACL_USER: | |
2985 | cifs_ace->cifs_uid = | |
2986 | cpu_to_le64(from_kuid(&init_user_ns, local_ace->e_uid)); | |
2987 | break; | |
2988 | case ACL_GROUP: | |
2989 | cifs_ace->cifs_uid = | |
2990 | cpu_to_le64(from_kgid(&init_user_ns, local_ace->e_gid)); | |
2991 | break; | |
2992 | default: | |
2993 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
2994 | } | |
2995 | } | |
2996 | ||
2997 | /** | |
2998 | * posix_acl_to_cifs - convert ACLs from POSIX ACL to cifs format | |
2999 | * @parm_data: ACLs in cifs format to conver to | |
3000 | * @acl: ACLs in POSIX ACL format to convert from | |
3001 | * @acl_type: the type of POSIX ACLs stored in @acl | |
3002 | * | |
3003 | * Return: the number cifs ACL entries after conversion | |
3004 | */ | |
3005 | static __u16 posix_acl_to_cifs(char *parm_data, const struct posix_acl *acl, | |
3006 | const int acl_type) | |
3007 | { | |
3008 | __u16 rc = 0; | |
3009 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; | |
3010 | const struct posix_acl_entry *pa, *pe; | |
3011 | int count; | |
3012 | int i = 0; | |
3013 | ||
3014 | if ((acl == NULL) || (cifs_acl == NULL)) | |
3015 | return 0; | |
3016 | ||
3017 | count = acl->a_count; | |
3018 | cifs_dbg(FYI, "setting acl with %d entries\n", count); | |
3019 | ||
3020 | /* | |
3021 | * Note that the uapi POSIX ACL version is verified by the VFS and is | |
3022 | * independent of the cifs ACL version. Changing the POSIX ACL version | |
3023 | * is a uapi change and if it's changed we will pass down the POSIX ACL | |
3024 | * version in struct posix_acl from the VFS. For now there's really | |
3025 | * only one that all filesystems know how to deal with. | |
3026 | */ | |
3027 | cifs_acl->version = cpu_to_le16(1); | |
3028 | if (acl_type == ACL_TYPE_ACCESS) { | |
3029 | cifs_acl->access_entry_count = cpu_to_le16(count); | |
3030 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); | |
3031 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
3032 | cifs_acl->default_entry_count = cpu_to_le16(count); | |
3033 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); | |
3034 | } else { | |
3035 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); | |
3036 | return 0; | |
3037 | } | |
3038 | FOREACH_ACL_ENTRY(pa, acl, pe) { | |
3039 | cifs_init_ace(&cifs_acl->ace_array[i++], pa); | |
3040 | } | |
3041 | if (rc == 0) { | |
3042 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); | |
3043 | rc += sizeof(struct cifs_posix_acl); | |
3044 | /* BB add check to make sure ACL does not overflow SMB */ | |
3045 | } | |
3046 | return rc; | |
3047 | } | |
3048 | ||
bd9684b0 CB |
3049 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, |
3050 | const unsigned char *searchName, struct posix_acl **acl, | |
3051 | const int acl_type, const struct nls_table *nls_codepage, | |
3052 | int remap) | |
3053 | { | |
3054 | /* SMB_QUERY_POSIX_ACL */ | |
3055 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3056 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3057 | int rc = 0; | |
3058 | int bytes_returned; | |
3059 | int name_len; | |
3060 | __u16 params, byte_count; | |
3061 | ||
3062 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); | |
3063 | ||
3064 | queryAclRetry: | |
3065 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3066 | (void **) &pSMBr); | |
3067 | if (rc) | |
3068 | return rc; | |
3069 | ||
3070 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3071 | name_len = | |
3072 | cifsConvertToUTF16((__le16 *) pSMB->FileName, | |
3073 | searchName, PATH_MAX, nls_codepage, | |
3074 | remap); | |
3075 | name_len++; /* trailing null */ | |
3076 | name_len *= 2; | |
3077 | pSMB->FileName[name_len] = 0; | |
3078 | pSMB->FileName[name_len+1] = 0; | |
3079 | } else { | |
3080 | name_len = copy_path_name(pSMB->FileName, searchName); | |
3081 | } | |
3082 | ||
3083 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3084 | pSMB->TotalDataCount = 0; | |
3085 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3086 | /* BB find exact max data count below from sess structure BB */ | |
3087 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3088 | pSMB->MaxSetupCount = 0; | |
3089 | pSMB->Reserved = 0; | |
3090 | pSMB->Flags = 0; | |
3091 | pSMB->Timeout = 0; | |
3092 | pSMB->Reserved2 = 0; | |
3093 | pSMB->ParameterOffset = cpu_to_le16( | |
3094 | offsetof(struct smb_com_transaction2_qpi_req, | |
3095 | InformationLevel) - 4); | |
3096 | pSMB->DataCount = 0; | |
3097 | pSMB->DataOffset = 0; | |
3098 | pSMB->SetupCount = 1; | |
3099 | pSMB->Reserved3 = 0; | |
3100 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3101 | byte_count = params + 1 /* pad */ ; | |
3102 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3103 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3104 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3105 | pSMB->Reserved4 = 0; | |
3106 | inc_rfc1001_len(pSMB, byte_count); | |
3107 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3108 | ||
3109 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3110 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3111 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); | |
3112 | if (rc) { | |
3113 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); | |
3114 | } else { | |
3115 | /* decode response */ | |
3116 | ||
3117 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3118 | /* BB also check enough total bytes returned */ | |
3119 | if (rc || get_bcc(&pSMBr->hdr) < 2) | |
3120 | rc = -EIO; /* bad smb */ | |
3121 | else { | |
3122 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3123 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3124 | rc = cifs_to_posix_acl(acl, | |
3125 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
3126 | acl_type, count); | |
3127 | } | |
3128 | } | |
3129 | cifs_buf_release(pSMB); | |
3130 | /* | |
3131 | * The else branch after SendReceive() doesn't return EAGAIN so if we | |
3132 | * allocated @acl in cifs_to_posix_acl() we are guaranteed to return | |
3133 | * here and don't leak POSIX ACLs. | |
3134 | */ | |
3135 | if (rc == -EAGAIN) | |
3136 | goto queryAclRetry; | |
3137 | return rc; | |
3138 | } | |
dc1af4c4 CB |
3139 | |
3140 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3141 | const unsigned char *fileName, const struct posix_acl *acl, | |
3142 | const int acl_type, const struct nls_table *nls_codepage, | |
3143 | int remap) | |
3144 | { | |
3145 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3146 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3147 | char *parm_data; | |
3148 | int name_len; | |
3149 | int rc = 0; | |
3150 | int bytes_returned = 0; | |
3151 | __u16 params, byte_count, data_count, param_offset, offset; | |
3152 | ||
3153 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); | |
3154 | setAclRetry: | |
3155 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3156 | (void **) &pSMBr); | |
3157 | if (rc) | |
3158 | return rc; | |
3159 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3160 | name_len = | |
3161 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, | |
3162 | PATH_MAX, nls_codepage, remap); | |
3163 | name_len++; /* trailing null */ | |
3164 | name_len *= 2; | |
3165 | } else { | |
3166 | name_len = copy_path_name(pSMB->FileName, fileName); | |
3167 | } | |
3168 | params = 6 + name_len; | |
3169 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3170 | /* BB find max SMB size from sess */ | |
3171 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3172 | pSMB->MaxSetupCount = 0; | |
3173 | pSMB->Reserved = 0; | |
3174 | pSMB->Flags = 0; | |
3175 | pSMB->Timeout = 0; | |
3176 | pSMB->Reserved2 = 0; | |
3177 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
3178 | InformationLevel) - 4; | |
3179 | offset = param_offset + params; | |
3180 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3181 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3182 | ||
3183 | /* convert to on the wire format for POSIX ACL */ | |
3184 | data_count = posix_acl_to_cifs(parm_data, acl, acl_type); | |
3185 | ||
3186 | if (data_count == 0) { | |
3187 | rc = -EOPNOTSUPP; | |
3188 | goto setACLerrorExit; | |
3189 | } | |
3190 | pSMB->DataOffset = cpu_to_le16(offset); | |
3191 | pSMB->SetupCount = 1; | |
3192 | pSMB->Reserved3 = 0; | |
3193 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3194 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3195 | byte_count = 3 /* pad */ + params + data_count; | |
3196 | pSMB->DataCount = cpu_to_le16(data_count); | |
3197 | pSMB->TotalDataCount = pSMB->DataCount; | |
3198 | pSMB->ParameterCount = cpu_to_le16(params); | |
3199 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3200 | pSMB->Reserved4 = 0; | |
3201 | inc_rfc1001_len(pSMB, byte_count); | |
3202 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3203 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3204 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3205 | if (rc) | |
3206 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); | |
3207 | ||
3208 | setACLerrorExit: | |
3209 | cifs_buf_release(pSMB); | |
3210 | if (rc == -EAGAIN) | |
3211 | goto setAclRetry; | |
3212 | return rc; | |
3213 | } | |
bd9684b0 CB |
3214 | #else |
3215 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3216 | const unsigned char *searchName, struct posix_acl **acl, | |
3217 | const int acl_type, const struct nls_table *nls_codepage, | |
3218 | int remap) | |
3219 | { | |
3220 | return -EOPNOTSUPP; | |
3221 | } | |
dc1af4c4 CB |
3222 | |
3223 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3224 | const unsigned char *fileName, const struct posix_acl *acl, | |
3225 | const int acl_type, const struct nls_table *nls_codepage, | |
3226 | int remap) | |
3227 | { | |
3228 | return -EOPNOTSUPP; | |
3229 | } | |
bd9684b0 CB |
3230 | #endif /* CONFIG_FS_POSIX_ACL */ |
3231 | ||
f654bac2 | 3232 | int |
6d5786a3 | 3233 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3234 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3235 | { |
50c2f753 SF |
3236 | int rc = 0; |
3237 | struct smb_t2_qfi_req *pSMB = NULL; | |
3238 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3239 | int bytes_returned; | |
3240 | __u16 params, byte_count; | |
f654bac2 | 3241 | |
f96637be | 3242 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3243 | if (tcon == NULL) |
3244 | return -ENODEV; | |
f654bac2 SF |
3245 | |
3246 | GetExtAttrRetry: | |
790fe579 | 3247 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
fb157ed2 | 3248 | (void **) &pSMBr); |
790fe579 SF |
3249 | if (rc) |
3250 | return rc; | |
f654bac2 | 3251 | |
ad7a2926 | 3252 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3253 | pSMB->t2.TotalDataCount = 0; |
3254 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3255 | /* BB find exact max data count below from sess structure BB */ | |
3256 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3257 | pSMB->t2.MaxSetupCount = 0; | |
3258 | pSMB->t2.Reserved = 0; | |
3259 | pSMB->t2.Flags = 0; | |
3260 | pSMB->t2.Timeout = 0; | |
3261 | pSMB->t2.Reserved2 = 0; | |
3262 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3263 | Fid) - 4); | |
3264 | pSMB->t2.DataCount = 0; | |
3265 | pSMB->t2.DataOffset = 0; | |
3266 | pSMB->t2.SetupCount = 1; | |
3267 | pSMB->t2.Reserved3 = 0; | |
3268 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3269 | byte_count = params + 1 /* pad */ ; | |
3270 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3271 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3272 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3273 | pSMB->Pad = 0; | |
f654bac2 | 3274 | pSMB->Fid = netfid; |
be8e3b00 | 3275 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3276 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3277 | ||
3278 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3279 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3280 | if (rc) { | |
f96637be | 3281 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3282 | } else { |
3283 | /* decode response */ | |
3284 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3285 | /* BB also check enough total bytes returned */ |
820a803f | 3286 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3287 | /* If rc should we check for EOPNOSUPP and |
3288 | disable the srvino flag? or in caller? */ | |
3289 | rc = -EIO; /* bad smb */ | |
3290 | else { | |
3291 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3292 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3293 | struct file_chattr_info *pfinfo; | |
fb157ed2 | 3294 | |
790fe579 | 3295 | if (count != 16) { |
a0a3036b | 3296 | cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n"); |
790fe579 SF |
3297 | rc = -EIO; |
3298 | goto GetExtAttrOut; | |
3299 | } | |
3300 | pfinfo = (struct file_chattr_info *) | |
3301 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3302 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3303 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3304 | } |
3305 | } | |
f654bac2 | 3306 | GetExtAttrOut: |
790fe579 SF |
3307 | cifs_buf_release(pSMB); |
3308 | if (rc == -EAGAIN) | |
3309 | goto GetExtAttrRetry; | |
3310 | return rc; | |
f654bac2 SF |
3311 | } |
3312 | ||
f654bac2 | 3313 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3314 | |
79df1bae JL |
3315 | /* |
3316 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3317 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3318 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3319 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3320 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3321 | * by caller | |
3322 | */ | |
3323 | static int | |
3324 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3325 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3326 | void **ret_buf) |
3327 | { | |
3328 | int rc; | |
3329 | __u32 temp_offset; | |
3330 | struct smb_com_ntransact_req *pSMB; | |
3331 | ||
3332 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3333 | (void **)&pSMB); | |
3334 | if (rc) | |
3335 | return rc; | |
3336 | *ret_buf = (void *)pSMB; | |
3337 | pSMB->Reserved = 0; | |
3338 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3339 | pSMB->TotalDataCount = 0; | |
c974befa | 3340 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3341 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3342 | pSMB->DataCount = pSMB->TotalDataCount; | |
3343 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3344 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3345 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3346 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3347 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3348 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3349 | return 0; | |
3350 | } | |
3351 | ||
3352 | static int | |
3353 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3354 | __u32 *pparmlen, __u32 *pdatalen) | |
3355 | { | |
3356 | char *end_of_smb; | |
3357 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3358 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3359 | u16 bcc; |
79df1bae JL |
3360 | |
3361 | *pdatalen = 0; | |
3362 | *pparmlen = 0; | |
3363 | ||
3364 | if (buf == NULL) | |
3365 | return -EINVAL; | |
3366 | ||
3367 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3368 | ||
820a803f JL |
3369 | bcc = get_bcc(&pSMBr->hdr); |
3370 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3371 | (char *)&pSMBr->ByteCount; |
3372 | ||
3373 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3374 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3375 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3376 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3377 | ||
3378 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3379 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3380 | ||
3381 | /* should we also check that parm and data areas do not overlap? */ | |
3382 | if (*ppparm > end_of_smb) { | |
f96637be | 3383 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3384 | return -EINVAL; |
3385 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3386 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3387 | return -EINVAL; |
3388 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3389 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3390 | return -EINVAL; |
3391 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3392 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3393 | *ppdata, data_count, (data_count + *ppdata), | |
3394 | end_of_smb, pSMBr); | |
79df1bae | 3395 | return -EINVAL; |
820a803f | 3396 | } else if (parm_count + data_count > bcc) { |
f96637be | 3397 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3398 | return -EINVAL; |
3399 | } | |
3400 | *pdatalen = data_count; | |
3401 | *pparmlen = parm_count; | |
3402 | return 0; | |
3403 | } | |
3404 | ||
0a4b92c0 SF |
3405 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3406 | int | |
6d5786a3 | 3407 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3408 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3409 | { |
3410 | int rc = 0; | |
3411 | int buf_type = 0; | |
ad7a2926 | 3412 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3413 | struct kvec iov[1]; |
da502f7d | 3414 | struct kvec rsp_iov; |
0a4b92c0 | 3415 | |
f96637be | 3416 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3417 | |
630f3f0c SF |
3418 | *pbuflen = 0; |
3419 | *acl_inf = NULL; | |
3420 | ||
b9c7a2bb | 3421 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3422 | 8 /* parm len */, tcon, (void **) &pSMB); |
3423 | if (rc) | |
3424 | return rc; | |
3425 | ||
3426 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3427 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3428 | pSMB->MaxSetupCount = 0; | |
3429 | pSMB->Fid = fid; /* file handle always le */ | |
3430 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3431 | CIFS_ACL_DACL); | |
3432 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3433 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3434 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3435 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3436 | |
a761ac57 | 3437 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3438 | 0, &rsp_iov); |
3439 | cifs_small_buf_release(pSMB); | |
44c58186 | 3440 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3441 | if (rc) { |
f96637be | 3442 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3443 | } else { /* decode response */ |
ad7a2926 | 3444 | __le32 *parm; |
630f3f0c SF |
3445 | __u32 parm_len; |
3446 | __u32 acl_len; | |
50c2f753 | 3447 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3448 | char *pdata; |
0a4b92c0 SF |
3449 | |
3450 | /* validate_nttransact */ | |
da502f7d | 3451 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3452 | &pdata, &parm_len, pbuflen); |
790fe579 | 3453 | if (rc) |
0a4b92c0 | 3454 | goto qsec_out; |
da502f7d | 3455 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3456 | |
f96637be JP |
3457 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3458 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3459 | |
3460 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3461 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3462 | *pbuflen = 0; |
0a4b92c0 SF |
3463 | goto qsec_out; |
3464 | } | |
3465 | ||
3466 | /* BB check that data area is minimum length and as big as acl_len */ | |
3467 | ||
af6f4612 | 3468 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3469 | if (acl_len != *pbuflen) { |
f96637be JP |
3470 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3471 | acl_len, *pbuflen); | |
630f3f0c SF |
3472 | if (*pbuflen > acl_len) |
3473 | *pbuflen = acl_len; | |
3474 | } | |
0a4b92c0 | 3475 | |
630f3f0c SF |
3476 | /* check if buffer is big enough for the acl |
3477 | header followed by the smallest SID */ | |
3478 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3479 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3480 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3481 | rc = -EINVAL; |
3482 | *pbuflen = 0; | |
3483 | } else { | |
f7f7c185 | 3484 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3485 | if (*acl_inf == NULL) { |
3486 | *pbuflen = 0; | |
3487 | rc = -ENOMEM; | |
3488 | } | |
630f3f0c | 3489 | } |
0a4b92c0 SF |
3490 | } |
3491 | qsec_out: | |
da502f7d | 3492 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3493 | return rc; |
3494 | } | |
97837582 SF |
3495 | |
3496 | int | |
6d5786a3 | 3497 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3498 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3499 | { |
3500 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3501 | int rc = 0; | |
3502 | int bytes_returned = 0; | |
3503 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3504 | void *pSMBr; |
97837582 SF |
3505 | |
3506 | setCifsAclRetry: | |
b2a3ad9c | 3507 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3508 | if (rc) |
b2a3ad9c | 3509 | return rc; |
97837582 SF |
3510 | |
3511 | pSMB->MaxSetupCount = 0; | |
3512 | pSMB->Reserved = 0; | |
3513 | ||
3514 | param_count = 8; | |
3515 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3516 | data_count = acllen; | |
3517 | data_offset = param_offset + param_count; | |
3518 | byte_count = 3 /* pad */ + param_count; | |
3519 | ||
3520 | pSMB->DataCount = cpu_to_le32(data_count); | |
3521 | pSMB->TotalDataCount = pSMB->DataCount; | |
3522 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3523 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3524 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3525 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3526 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3527 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3528 | pSMB->SetupCount = 0; | |
3529 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3530 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3531 | ||
3532 | pSMB->Fid = fid; /* file handle always le */ | |
3533 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3534 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3535 | |
3536 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3537 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3538 | data_offset, pntsd, acllen); | |
be8e3b00 | 3539 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3540 | } else |
be8e3b00 | 3541 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3542 | |
3543 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3544 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3545 | ||
f96637be JP |
3546 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3547 | bytes_returned, rc); | |
97837582 | 3548 | if (rc) |
f96637be | 3549 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3550 | cifs_buf_release(pSMB); |
3551 | ||
3552 | if (rc == -EAGAIN) | |
3553 | goto setCifsAclRetry; | |
3554 | ||
3555 | return (rc); | |
3556 | } | |
3557 | ||
0a4b92c0 | 3558 | |
6b8edfe0 SF |
3559 | /* Legacy Query Path Information call for lookup to old servers such |
3560 | as Win9x/WinME */ | |
68889f26 PS |
3561 | int |
3562 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3563 | const char *search_name, FILE_ALL_INFO *data, | |
3564 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3565 | { |
ad7a2926 SF |
3566 | QUERY_INFORMATION_REQ *pSMB; |
3567 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3568 | int rc = 0; |
3569 | int bytes_returned; | |
3570 | int name_len; | |
3571 | ||
f96637be | 3572 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3573 | QInfRetry: |
3574 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3575 | (void **) &pSMBr); |
6b8edfe0 SF |
3576 | if (rc) |
3577 | return rc; | |
3578 | ||
3579 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3580 | name_len = | |
acbbb76a | 3581 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3582 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3583 | remap); |
6b8edfe0 SF |
3584 | name_len++; /* trailing null */ |
3585 | name_len *= 2; | |
50c2f753 | 3586 | } else { |
340625e6 | 3587 | name_len = copy_path_name(pSMB->FileName, search_name); |
6b8edfe0 SF |
3588 | } |
3589 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3590 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3591 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3592 | pSMB->ByteCount = cpu_to_le16(name_len); |
3593 | ||
3594 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3595 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3596 | if (rc) { |
f96637be | 3597 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3598 | } else if (data) { |
95390201 | 3599 | struct timespec64 ts; |
1bd5bbcb | 3600 | __u32 time = le32_to_cpu(pSMBr->last_write_time); |
ad7a2926 SF |
3601 | |
3602 | /* decode response */ | |
1bd5bbcb | 3603 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3604 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3605 | ts.tv_nsec = 0; |
3606 | ts.tv_sec = time; | |
3607 | /* decode time fields */ | |
68889f26 PS |
3608 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3609 | data->LastWriteTime = data->ChangeTime; | |
3610 | data->LastAccessTime = 0; | |
3611 | data->AllocationSize = | |
70ca734a | 3612 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3613 | data->EndOfFile = data->AllocationSize; |
3614 | data->Attributes = | |
70ca734a | 3615 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3616 | } else |
3617 | rc = -EIO; /* bad buffer passed in */ | |
3618 | ||
3619 | cifs_buf_release(pSMB); | |
3620 | ||
3621 | if (rc == -EAGAIN) | |
3622 | goto QInfRetry; | |
3623 | ||
3624 | return rc; | |
3625 | } | |
3626 | ||
bcd5357f | 3627 | int |
6d5786a3 | 3628 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3629 | u16 netfid, FILE_ALL_INFO *pFindData) |
3630 | { | |
3631 | struct smb_t2_qfi_req *pSMB = NULL; | |
3632 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3633 | int rc = 0; | |
3634 | int bytes_returned; | |
3635 | __u16 params, byte_count; | |
3636 | ||
3637 | QFileInfoRetry: | |
3638 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3639 | (void **) &pSMBr); | |
3640 | if (rc) | |
3641 | return rc; | |
3642 | ||
3643 | params = 2 /* level */ + 2 /* fid */; | |
3644 | pSMB->t2.TotalDataCount = 0; | |
3645 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3646 | /* BB find exact max data count below from sess structure BB */ | |
3647 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3648 | pSMB->t2.MaxSetupCount = 0; | |
3649 | pSMB->t2.Reserved = 0; | |
3650 | pSMB->t2.Flags = 0; | |
3651 | pSMB->t2.Timeout = 0; | |
3652 | pSMB->t2.Reserved2 = 0; | |
3653 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3654 | Fid) - 4); | |
3655 | pSMB->t2.DataCount = 0; | |
3656 | pSMB->t2.DataOffset = 0; | |
3657 | pSMB->t2.SetupCount = 1; | |
3658 | pSMB->t2.Reserved3 = 0; | |
3659 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3660 | byte_count = params + 1 /* pad */ ; | |
3661 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3662 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3663 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3664 | pSMB->Pad = 0; | |
3665 | pSMB->Fid = netfid; | |
be8e3b00 | 3666 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3667 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 3668 | |
bcd5357f JL |
3669 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3670 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3671 | if (rc) { | |
a0a3036b | 3672 | cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc); |
bcd5357f JL |
3673 | } else { /* decode response */ |
3674 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3675 | |
bcd5357f JL |
3676 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3677 | rc = -EIO; | |
820a803f | 3678 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3679 | rc = -EIO; /* bad smb */ |
3680 | else if (pFindData) { | |
3681 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3682 | memcpy((char *) pFindData, | |
3683 | (char *) &pSMBr->hdr.Protocol + | |
3684 | data_offset, sizeof(FILE_ALL_INFO)); | |
3685 | } else | |
3686 | rc = -ENOMEM; | |
3687 | } | |
3688 | cifs_buf_release(pSMB); | |
3689 | if (rc == -EAGAIN) | |
3690 | goto QFileInfoRetry; | |
6b8edfe0 | 3691 | |
bcd5357f JL |
3692 | return rc; |
3693 | } | |
6b8edfe0 | 3694 | |
1da177e4 | 3695 | int |
6d5786a3 | 3696 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 3697 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 3698 | int legacy /* old style infolevel */, |
737b758c | 3699 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 3700 | { |
68889f26 | 3701 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
3702 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
3703 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3704 | int rc = 0; | |
3705 | int bytes_returned; | |
3706 | int name_len; | |
3707 | __u16 params, byte_count; | |
3708 | ||
f96637be | 3709 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
3710 | QPathInfoRetry: |
3711 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3712 | (void **) &pSMBr); | |
3713 | if (rc) | |
3714 | return rc; | |
3715 | ||
3716 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3717 | name_len = | |
68889f26 | 3718 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 3719 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3720 | name_len++; /* trailing null */ |
3721 | name_len *= 2; | |
340625e6 RS |
3722 | } else { |
3723 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
3724 | } |
3725 | ||
50c2f753 | 3726 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3727 | pSMB->TotalDataCount = 0; |
3728 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3729 | /* BB find exact max SMB PDU from sess structure BB */ |
3730 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3731 | pSMB->MaxSetupCount = 0; |
3732 | pSMB->Reserved = 0; | |
3733 | pSMB->Flags = 0; | |
3734 | pSMB->Timeout = 0; | |
3735 | pSMB->Reserved2 = 0; | |
3736 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3737 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3738 | pSMB->DataCount = 0; |
3739 | pSMB->DataOffset = 0; | |
3740 | pSMB->SetupCount = 1; | |
3741 | pSMB->Reserved3 = 0; | |
3742 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3743 | byte_count = params + 1 /* pad */ ; | |
3744 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3745 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3746 | if (legacy) |
acf1a1b1 SF |
3747 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3748 | else | |
3749 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3750 | pSMB->Reserved4 = 0; |
be8e3b00 | 3751 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3752 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3753 | ||
3754 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3755 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3756 | if (rc) { | |
f96637be | 3757 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
3758 | } else { /* decode response */ |
3759 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3760 | ||
acf1a1b1 SF |
3761 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3762 | rc = -EIO; | |
820a803f | 3763 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3764 | rc = -EIO; /* bad smb */ |
820a803f | 3765 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3766 | rc = -EIO; /* 24 or 26 expected but we do not read |
3767 | last field */ | |
68889f26 | 3768 | else if (data) { |
acf1a1b1 | 3769 | int size; |
1da177e4 | 3770 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 3771 | |
68889f26 PS |
3772 | /* |
3773 | * On legacy responses we do not read the last field, | |
3774 | * EAsize, fortunately since it varies by subdialect and | |
3775 | * also note it differs on Set vs Get, ie two bytes or 4 | |
3776 | * bytes depending but we don't care here. | |
3777 | */ | |
ad7a2926 | 3778 | if (legacy) |
acf1a1b1 SF |
3779 | size = sizeof(FILE_INFO_STANDARD); |
3780 | else | |
3781 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 3782 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 3783 | data_offset, size); |
1da177e4 LT |
3784 | } else |
3785 | rc = -ENOMEM; | |
3786 | } | |
3787 | cifs_buf_release(pSMB); | |
3788 | if (rc == -EAGAIN) | |
3789 | goto QPathInfoRetry; | |
3790 | ||
3791 | return rc; | |
3792 | } | |
3793 | ||
c8634fd3 | 3794 | int |
6d5786a3 | 3795 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
3796 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
3797 | { | |
3798 | struct smb_t2_qfi_req *pSMB = NULL; | |
3799 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3800 | int rc = 0; | |
3801 | int bytes_returned; | |
3802 | __u16 params, byte_count; | |
3803 | ||
3804 | UnixQFileInfoRetry: | |
3805 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3806 | (void **) &pSMBr); | |
3807 | if (rc) | |
3808 | return rc; | |
3809 | ||
3810 | params = 2 /* level */ + 2 /* fid */; | |
3811 | pSMB->t2.TotalDataCount = 0; | |
3812 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3813 | /* BB find exact max data count below from sess structure BB */ | |
3814 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3815 | pSMB->t2.MaxSetupCount = 0; | |
3816 | pSMB->t2.Reserved = 0; | |
3817 | pSMB->t2.Flags = 0; | |
3818 | pSMB->t2.Timeout = 0; | |
3819 | pSMB->t2.Reserved2 = 0; | |
3820 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3821 | Fid) - 4); | |
3822 | pSMB->t2.DataCount = 0; | |
3823 | pSMB->t2.DataOffset = 0; | |
3824 | pSMB->t2.SetupCount = 1; | |
3825 | pSMB->t2.Reserved3 = 0; | |
3826 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3827 | byte_count = params + 1 /* pad */ ; | |
3828 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3829 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3830 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3831 | pSMB->Pad = 0; | |
3832 | pSMB->Fid = netfid; | |
be8e3b00 | 3833 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3834 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
3835 | |
3836 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3837 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3838 | if (rc) { | |
a0a3036b | 3839 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc); |
c8634fd3 JL |
3840 | } else { /* decode response */ |
3841 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3842 | ||
820a803f | 3843 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3844 | 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 |
3845 | rc = -EIO; /* bad smb */ |
3846 | } else { | |
3847 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3848 | memcpy((char *) pFindData, | |
3849 | (char *) &pSMBr->hdr.Protocol + | |
3850 | data_offset, | |
3851 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3852 | } | |
3853 | } | |
3854 | ||
3855 | cifs_buf_release(pSMB); | |
3856 | if (rc == -EAGAIN) | |
3857 | goto UnixQFileInfoRetry; | |
3858 | ||
3859 | return rc; | |
3860 | } | |
3861 | ||
1da177e4 | 3862 | int |
6d5786a3 | 3863 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3864 | const unsigned char *searchName, |
582d21e5 | 3865 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3866 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3867 | { |
3868 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3869 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3870 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3871 | int rc = 0; | |
3872 | int bytes_returned = 0; | |
3873 | int name_len; | |
3874 | __u16 params, byte_count; | |
3875 | ||
f96637be | 3876 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
3877 | UnixQPathInfoRetry: |
3878 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3879 | (void **) &pSMBr); | |
3880 | if (rc) | |
3881 | return rc; | |
3882 | ||
3883 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3884 | name_len = | |
acbbb76a SF |
3885 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
3886 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3887 | name_len++; /* trailing null */ |
3888 | name_len *= 2; | |
340625e6 RS |
3889 | } else { |
3890 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3891 | } |
3892 | ||
50c2f753 | 3893 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3894 | pSMB->TotalDataCount = 0; |
3895 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3896 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3897 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3898 | pSMB->MaxSetupCount = 0; |
3899 | pSMB->Reserved = 0; | |
3900 | pSMB->Flags = 0; | |
3901 | pSMB->Timeout = 0; | |
3902 | pSMB->Reserved2 = 0; | |
3903 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3904 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3905 | pSMB->DataCount = 0; |
3906 | pSMB->DataOffset = 0; | |
3907 | pSMB->SetupCount = 1; | |
3908 | pSMB->Reserved3 = 0; | |
3909 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3910 | byte_count = params + 1 /* pad */ ; | |
3911 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3912 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3913 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3914 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3915 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3916 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3917 | ||
3918 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3919 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3920 | if (rc) { | |
a0a3036b | 3921 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc); |
1da177e4 LT |
3922 | } else { /* decode response */ |
3923 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3924 | ||
820a803f | 3925 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3926 | 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 |
3927 | rc = -EIO; /* bad smb */ |
3928 | } else { | |
3929 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3930 | memcpy((char *) pFindData, | |
3931 | (char *) &pSMBr->hdr.Protocol + | |
3932 | data_offset, | |
630f3f0c | 3933 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3934 | } |
3935 | } | |
3936 | cifs_buf_release(pSMB); | |
3937 | if (rc == -EAGAIN) | |
3938 | goto UnixQPathInfoRetry; | |
3939 | ||
3940 | return rc; | |
3941 | } | |
3942 | ||
1da177e4 LT |
3943 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3944 | int | |
6d5786a3 | 3945 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 3946 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 3947 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 3948 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
3949 | { |
3950 | /* level 257 SMB_ */ | |
3951 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3952 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3953 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3954 | int rc = 0; |
3955 | int bytes_returned = 0; | |
c052e2b4 | 3956 | int name_len, remap; |
1da177e4 | 3957 | __u16 params, byte_count; |
c052e2b4 | 3958 | struct nls_table *nls_codepage; |
1da177e4 | 3959 | |
f96637be | 3960 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
3961 | |
3962 | findFirstRetry: | |
3963 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3964 | (void **) &pSMBr); | |
3965 | if (rc) | |
3966 | return rc; | |
3967 | ||
c052e2b4 | 3968 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 3969 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 3970 | |
1da177e4 LT |
3971 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3972 | name_len = | |
acbbb76a SF |
3973 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
3974 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
3975 | /* We can not add the asterik earlier in case |
3976 | it got remapped to 0xF03A as if it were part of the | |
3977 | directory name instead of a wildcard */ | |
1da177e4 | 3978 | name_len *= 2; |
c052e2b4 SP |
3979 | if (msearch) { |
3980 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
3981 | pSMB->FileName[name_len+1] = 0; | |
3982 | pSMB->FileName[name_len+2] = '*'; | |
3983 | pSMB->FileName[name_len+3] = 0; | |
3984 | name_len += 4; /* now the trailing null */ | |
3985 | /* null terminate just in case */ | |
3986 | pSMB->FileName[name_len] = 0; | |
3987 | pSMB->FileName[name_len+1] = 0; | |
3988 | name_len += 2; | |
3989 | } | |
340625e6 RS |
3990 | } else { |
3991 | name_len = copy_path_name(pSMB->FileName, searchName); | |
c052e2b4 | 3992 | if (msearch) { |
340625e6 RS |
3993 | if (WARN_ON_ONCE(name_len > PATH_MAX-2)) |
3994 | name_len = PATH_MAX-2; | |
3995 | /* overwrite nul byte */ | |
3996 | pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb); | |
3997 | pSMB->FileName[name_len] = '*'; | |
3998 | pSMB->FileName[name_len+1] = 0; | |
3999 | name_len += 2; | |
c052e2b4 | 4000 | } |
1da177e4 LT |
4001 | } |
4002 | ||
4003 | params = 12 + name_len /* includes null */ ; | |
4004 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4005 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4006 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4007 | pSMB->MaxSetupCount = 0; |
4008 | pSMB->Reserved = 0; | |
4009 | pSMB->Flags = 0; | |
4010 | pSMB->Timeout = 0; | |
4011 | pSMB->Reserved2 = 0; | |
4012 | byte_count = params + 1 /* pad */ ; | |
4013 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4014 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4015 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4016 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4017 | - 4); | |
1da177e4 LT |
4018 | pSMB->DataCount = 0; |
4019 | pSMB->DataOffset = 0; | |
4020 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4021 | pSMB->Reserved3 = 0; | |
4022 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4023 | pSMB->SearchAttributes = | |
4024 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4025 | ATTR_DIRECTORY); | |
50c2f753 | 4026 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4027 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4028 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4029 | ||
4030 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4031 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4032 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4033 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4034 | ||
4035 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4036 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4037 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4038 | |
88274815 SF |
4039 | if (rc) {/* BB add logic to retry regular search if Unix search |
4040 | rejected unexpectedly by server */ | |
1da177e4 | 4041 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4042 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4043 | |
88274815 | 4044 | cifs_buf_release(pSMB); |
1da177e4 LT |
4045 | |
4046 | /* BB eventually could optimize out free and realloc of buf */ | |
4047 | /* for this case */ | |
4048 | if (rc == -EAGAIN) | |
4049 | goto findFirstRetry; | |
4050 | } else { /* decode response */ | |
4051 | /* BB remember to free buffer if error BB */ | |
4052 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4053 | if (rc == 0) { |
b77d753c SF |
4054 | unsigned int lnoff; |
4055 | ||
1da177e4 | 4056 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4057 | psrch_inf->unicode = true; |
1da177e4 | 4058 | else |
4b18f2a9 | 4059 | psrch_inf->unicode = false; |
1da177e4 LT |
4060 | |
4061 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
01d1bd76 | 4062 | psrch_inf->smallBuf = false; |
50c2f753 SF |
4063 | psrch_inf->srch_entries_start = |
4064 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4065 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4066 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4067 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4068 | ||
790fe579 | 4069 | if (parms->EndofSearch) |
4b18f2a9 | 4070 | psrch_inf->endOfSearch = true; |
1da177e4 | 4071 | else |
4b18f2a9 | 4072 | psrch_inf->endOfSearch = false; |
1da177e4 | 4073 | |
50c2f753 SF |
4074 | psrch_inf->entries_in_buffer = |
4075 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4076 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4077 | psrch_inf->entries_in_buffer; |
b77d753c | 4078 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4079 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4080 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4081 | psrch_inf->last_entry = NULL; |
4082 | return rc; | |
4083 | } | |
4084 | ||
0752f152 | 4085 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4086 | lnoff; |
4087 | ||
c052e2b4 SP |
4088 | if (pnetfid) |
4089 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4090 | } else { |
4091 | cifs_buf_release(pSMB); | |
4092 | } | |
4093 | } | |
4094 | ||
4095 | return rc; | |
4096 | } | |
4097 | ||
6d5786a3 PS |
4098 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4099 | __u16 searchHandle, __u16 search_flags, | |
4100 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4101 | { |
4102 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4103 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4104 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4105 | char *response_data; |
4106 | int rc = 0; | |
9438fabb JL |
4107 | int bytes_returned; |
4108 | unsigned int name_len; | |
1da177e4 LT |
4109 | __u16 params, byte_count; |
4110 | ||
f96637be | 4111 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4112 | |
4b18f2a9 | 4113 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4114 | return -ENOENT; |
4115 | ||
4116 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4117 | (void **) &pSMBr); | |
4118 | if (rc) | |
4119 | return rc; | |
4120 | ||
50c2f753 | 4121 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4122 | byte_count = 0; |
4123 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4124 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4125 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4126 | pSMB->MaxSetupCount = 0; |
4127 | pSMB->Reserved = 0; | |
4128 | pSMB->Flags = 0; | |
4129 | pSMB->Timeout = 0; | |
4130 | pSMB->Reserved2 = 0; | |
4131 | pSMB->ParameterOffset = cpu_to_le16( | |
4132 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4133 | pSMB->DataCount = 0; | |
4134 | pSMB->DataOffset = 0; | |
4135 | pSMB->SetupCount = 1; | |
4136 | pSMB->Reserved3 = 0; | |
4137 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4138 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4139 | pSMB->SearchCount = | |
630f3f0c | 4140 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4141 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4142 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4143 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4144 | |
4145 | name_len = psrch_inf->resume_name_len; | |
4146 | params += name_len; | |
790fe579 | 4147 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4148 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4149 | byte_count += name_len; | |
ef6724e3 SF |
4150 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4151 | pSMB->ResumeFileName[name_len] = 0; | |
4152 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4153 | } else { |
4154 | rc = -EINVAL; | |
4155 | goto FNext2_err_exit; | |
4156 | } | |
4157 | byte_count = params + 1 /* pad */ ; | |
4158 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4159 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4160 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4161 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4162 | |
1da177e4 LT |
4163 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4164 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4165 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4166 | if (rc) { |
4167 | if (rc == -EBADF) { | |
4b18f2a9 | 4168 | psrch_inf->endOfSearch = true; |
6353450a | 4169 | cifs_buf_release(pSMB); |
50c2f753 | 4170 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4171 | } else |
f96637be | 4172 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4173 | } else { /* decode response */ |
4174 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4175 | |
790fe579 | 4176 | if (rc == 0) { |
b77d753c SF |
4177 | unsigned int lnoff; |
4178 | ||
1da177e4 LT |
4179 | /* BB fixme add lock for file (srch_info) struct here */ |
4180 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4181 | psrch_inf->unicode = true; |
1da177e4 | 4182 | else |
4b18f2a9 | 4183 | psrch_inf->unicode = false; |
1da177e4 LT |
4184 | response_data = (char *) &pSMBr->hdr.Protocol + |
4185 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4186 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4187 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4188 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4189 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4190 | cifs_small_buf_release( |
4191 | psrch_inf->ntwrk_buf_start); | |
4192 | else | |
4193 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4194 | psrch_inf->srch_entries_start = response_data; |
4195 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
01d1bd76 | 4196 | psrch_inf->smallBuf = false; |
790fe579 | 4197 | if (parms->EndofSearch) |
4b18f2a9 | 4198 | psrch_inf->endOfSearch = true; |
1da177e4 | 4199 | else |
4b18f2a9 | 4200 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4201 | psrch_inf->entries_in_buffer = |
4202 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4203 | psrch_inf->index_of_last_entry += |
4204 | psrch_inf->entries_in_buffer; | |
b77d753c | 4205 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4206 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4207 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4208 | psrch_inf->last_entry = NULL; |
4209 | return rc; | |
4210 | } else | |
4211 | psrch_inf->last_entry = | |
4212 | psrch_inf->srch_entries_start + lnoff; | |
4213 | ||
f96637be JP |
4214 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4215 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4216 | |
4217 | /* BB fixme add unlock here */ | |
4218 | } | |
4219 | ||
4220 | } | |
4221 | ||
4222 | /* BB On error, should we leave previous search buf (and count and | |
4223 | last entry fields) intact or free the previous one? */ | |
4224 | ||
4225 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4226 | since file handle passed in no longer valid */ | |
4227 | FNext2_err_exit: | |
4228 | if (rc != 0) | |
4229 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4230 | return rc; |
4231 | } | |
4232 | ||
4233 | int | |
6d5786a3 | 4234 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4235 | const __u16 searchHandle) |
1da177e4 LT |
4236 | { |
4237 | int rc = 0; | |
4238 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4239 | |
f96637be | 4240 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4241 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4242 | ||
4243 | /* no sense returning error if session restarted | |
4244 | as file handle has been closed */ | |
790fe579 | 4245 | if (rc == -EAGAIN) |
1da177e4 LT |
4246 | return 0; |
4247 | if (rc) | |
4248 | return rc; | |
4249 | ||
1da177e4 LT |
4250 | pSMB->FileID = searchHandle; |
4251 | pSMB->ByteCount = 0; | |
792af7b0 | 4252 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4253 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4254 | if (rc) |
f96637be | 4255 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4256 | |
44c58186 | 4257 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4258 | |
4259 | /* Since session is dead, search handle closed on server already */ | |
4260 | if (rc == -EAGAIN) | |
4261 | rc = 0; | |
4262 | ||
4263 | return rc; | |
4264 | } | |
4265 | ||
1da177e4 | 4266 | int |
6d5786a3 | 4267 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4268 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4269 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4270 | { |
4271 | int rc = 0; | |
4272 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4273 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4274 | int name_len, bytes_returned; | |
4275 | __u16 params, byte_count; | |
4276 | ||
f96637be | 4277 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4278 | if (tcon == NULL) |
50c2f753 | 4279 | return -ENODEV; |
1da177e4 LT |
4280 | |
4281 | GetInodeNumberRetry: | |
4282 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4283 | (void **) &pSMBr); |
1da177e4 LT |
4284 | if (rc) |
4285 | return rc; | |
4286 | ||
1da177e4 LT |
4287 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4288 | name_len = | |
acbbb76a | 4289 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4290 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4291 | remap); |
1da177e4 LT |
4292 | name_len++; /* trailing null */ |
4293 | name_len *= 2; | |
340625e6 RS |
4294 | } else { |
4295 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4296 | } |
4297 | ||
4298 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4299 | pSMB->TotalDataCount = 0; | |
4300 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4301 | /* BB find exact max data count below from sess structure BB */ | |
4302 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4303 | pSMB->MaxSetupCount = 0; | |
4304 | pSMB->Reserved = 0; | |
4305 | pSMB->Flags = 0; | |
4306 | pSMB->Timeout = 0; | |
4307 | pSMB->Reserved2 = 0; | |
4308 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4309 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4310 | pSMB->DataCount = 0; |
4311 | pSMB->DataOffset = 0; | |
4312 | pSMB->SetupCount = 1; | |
4313 | pSMB->Reserved3 = 0; | |
4314 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4315 | byte_count = params + 1 /* pad */ ; | |
4316 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4317 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4318 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4319 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4320 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4321 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4322 | ||
4323 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4324 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4325 | if (rc) { | |
f96637be | 4326 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4327 | } else { |
4328 | /* decode response */ | |
4329 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4330 | /* BB also check enough total bytes returned */ |
820a803f | 4331 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4332 | /* If rc should we check for EOPNOSUPP and |
4333 | disable the srvino flag? or in caller? */ | |
4334 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4335 | else { |
1da177e4 LT |
4336 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4337 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4338 | struct file_internal_info *pfinfo; |
1da177e4 | 4339 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4340 | if (count < 8) { |
a0a3036b | 4341 | cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4342 | rc = -EIO; |
4343 | goto GetInodeNumOut; | |
4344 | } | |
4345 | pfinfo = (struct file_internal_info *) | |
4346 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4347 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4348 | } |
4349 | } | |
4350 | GetInodeNumOut: | |
4351 | cifs_buf_release(pSMB); | |
4352 | if (rc == -EAGAIN) | |
4353 | goto GetInodeNumberRetry; | |
4354 | return rc; | |
4355 | } | |
1da177e4 LT |
4356 | |
4357 | int | |
6d5786a3 | 4358 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4359 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4360 | unsigned int *num_of_nodes, |
737b758c | 4361 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4362 | { |
4363 | /* TRANS2_GET_DFS_REFERRAL */ | |
4364 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4365 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4366 | int rc = 0; |
4367 | int bytes_returned; | |
4368 | int name_len; | |
1da177e4 | 4369 | __u16 params, byte_count; |
c2cf07d5 SF |
4370 | *num_of_nodes = 0; |
4371 | *target_nodes = NULL; | |
1da177e4 | 4372 | |
f96637be | 4373 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4374 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4375 | return -ENODEV; |
b327a717 | 4376 | |
1da177e4 | 4377 | getDFSRetry: |
b327a717 | 4378 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4379 | (void **) &pSMBr); |
4380 | if (rc) | |
4381 | return rc; | |
50c2f753 SF |
4382 | |
4383 | /* server pointer checked in called function, | |
1982c344 | 4384 | but should never be null here anyway */ |
88257360 | 4385 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4386 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4387 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4388 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4389 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4390 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4391 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4392 | |
4393 | if (ses->capabilities & CAP_UNICODE) { | |
4394 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4395 | name_len = | |
acbbb76a | 4396 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4397 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4398 | remap); |
1da177e4 LT |
4399 | name_len++; /* trailing null */ |
4400 | name_len *= 2; | |
50c2f753 | 4401 | } else { /* BB improve the check for buffer overruns BB */ |
340625e6 | 4402 | name_len = copy_path_name(pSMB->RequestFileName, search_name); |
1da177e4 LT |
4403 | } |
4404 | ||
65c3b205 | 4405 | if (ses->server->sign) |
38d77c50 | 4406 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4407 | |
50c2f753 | 4408 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4409 | |
1da177e4 LT |
4410 | params = 2 /* level */ + name_len /*includes null */ ; |
4411 | pSMB->TotalDataCount = 0; | |
4412 | pSMB->DataCount = 0; | |
4413 | pSMB->DataOffset = 0; | |
4414 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4415 | /* BB find exact max SMB PDU from sess structure BB */ |
4416 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4417 | pSMB->MaxSetupCount = 0; |
4418 | pSMB->Reserved = 0; | |
4419 | pSMB->Flags = 0; | |
4420 | pSMB->Timeout = 0; | |
4421 | pSMB->Reserved2 = 0; | |
4422 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4423 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4424 | pSMB->SetupCount = 1; |
4425 | pSMB->Reserved3 = 0; | |
4426 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4427 | byte_count = params + 3 /* pad */ ; | |
4428 | pSMB->ParameterCount = cpu_to_le16(params); | |
4429 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4430 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4431 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4432 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4433 | ||
4434 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4435 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4436 | if (rc) { | |
f96637be | 4437 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4438 | goto GetDFSRefExit; |
4439 | } | |
4440 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4441 | |
c2cf07d5 | 4442 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4443 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4444 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4445 | goto GetDFSRefExit; |
4446 | } | |
c2cf07d5 | 4447 | |
f96637be JP |
4448 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4449 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4450 | |
fec4585f | 4451 | /* parse returned result into more usable form */ |
4ecce920 AA |
4452 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4453 | le16_to_cpu(pSMBr->t2.DataCount), | |
4454 | num_of_nodes, target_nodes, nls_codepage, | |
4455 | remap, search_name, | |
284316dd | 4456 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4457 | |
1da177e4 | 4458 | GetDFSRefExit: |
0d817bc0 | 4459 | cifs_buf_release(pSMB); |
1da177e4 LT |
4460 | |
4461 | if (rc == -EAGAIN) | |
4462 | goto getDFSRetry; | |
4463 | ||
4464 | return rc; | |
4465 | } | |
4466 | ||
20962438 SF |
4467 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4468 | int | |
6d5786a3 PS |
4469 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4470 | struct kstatfs *FSData) | |
20962438 SF |
4471 | { |
4472 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4473 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4474 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4475 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4476 | int rc = 0; | |
4477 | int bytes_returned = 0; | |
4478 | __u16 params, byte_count; | |
4479 | ||
f96637be | 4480 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4481 | oldQFSInfoRetry: |
4482 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4483 | (void **) &pSMBr); | |
4484 | if (rc) | |
4485 | return rc; | |
20962438 SF |
4486 | |
4487 | params = 2; /* level */ | |
4488 | pSMB->TotalDataCount = 0; | |
4489 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4490 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
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(offsetof( | |
4500 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4501 | pSMB->DataCount = 0; | |
4502 | pSMB->DataOffset = 0; | |
4503 | pSMB->SetupCount = 1; | |
4504 | pSMB->Reserved3 = 0; | |
4505 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4506 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4507 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4508 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4509 | ||
4510 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4511 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4512 | if (rc) { | |
f96637be | 4513 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4514 | } else { /* decode response */ |
4515 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4516 | ||
820a803f | 4517 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4518 | rc = -EIO; /* bad smb */ |
4519 | else { | |
4520 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4521 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4522 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4523 | |
50c2f753 | 4524 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4525 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4526 | FSData->f_bsize = | |
4527 | le16_to_cpu(response_data->BytesPerSector) * | |
4528 | le32_to_cpu(response_data-> | |
4529 | SectorsPerAllocationUnit); | |
5a519bea SF |
4530 | /* |
4531 | * much prefer larger but if server doesn't report | |
4532 | * a valid size than 4K is a reasonable minimum | |
4533 | */ | |
4534 | if (FSData->f_bsize < 512) | |
4535 | FSData->f_bsize = 4096; | |
4536 | ||
20962438 | 4537 | FSData->f_blocks = |
50c2f753 | 4538 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4539 | FSData->f_bfree = FSData->f_bavail = |
4540 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4541 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4542 | (unsigned long long)FSData->f_blocks, | |
4543 | (unsigned long long)FSData->f_bfree, | |
4544 | FSData->f_bsize); | |
20962438 SF |
4545 | } |
4546 | } | |
4547 | cifs_buf_release(pSMB); | |
4548 | ||
4549 | if (rc == -EAGAIN) | |
4550 | goto oldQFSInfoRetry; | |
4551 | ||
4552 | return rc; | |
4553 | } | |
4554 | ||
1da177e4 | 4555 | int |
6d5786a3 PS |
4556 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4557 | struct kstatfs *FSData) | |
1da177e4 LT |
4558 | { |
4559 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4560 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4561 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4562 | FILE_SYSTEM_INFO *response_data; | |
4563 | int rc = 0; | |
4564 | int bytes_returned = 0; | |
4565 | __u16 params, byte_count; | |
4566 | ||
f96637be | 4567 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4568 | QFSInfoRetry: |
4569 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4570 | (void **) &pSMBr); | |
4571 | if (rc) | |
4572 | return rc; | |
4573 | ||
4574 | params = 2; /* level */ | |
4575 | pSMB->TotalDataCount = 0; | |
4576 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4577 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4578 | pSMB->MaxSetupCount = 0; |
4579 | pSMB->Reserved = 0; | |
4580 | pSMB->Flags = 0; | |
4581 | pSMB->Timeout = 0; | |
4582 | pSMB->Reserved2 = 0; | |
4583 | byte_count = params + 1 /* pad */ ; | |
4584 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4585 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4586 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4587 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4588 | pSMB->DataCount = 0; |
4589 | pSMB->DataOffset = 0; | |
4590 | pSMB->SetupCount = 1; | |
4591 | pSMB->Reserved3 = 0; | |
4592 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4593 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4594 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4595 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4596 | ||
4597 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4598 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4599 | if (rc) { | |
f96637be | 4600 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 4601 | } else { /* decode response */ |
50c2f753 | 4602 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4603 | |
820a803f | 4604 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4605 | rc = -EIO; /* bad smb */ |
4606 | else { | |
4607 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4608 | |
4609 | response_data = | |
4610 | (FILE_SYSTEM_INFO | |
4611 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4612 | data_offset); | |
4613 | FSData->f_bsize = | |
4614 | le32_to_cpu(response_data->BytesPerSector) * | |
4615 | le32_to_cpu(response_data-> | |
4616 | SectorsPerAllocationUnit); | |
5a519bea SF |
4617 | /* |
4618 | * much prefer larger but if server doesn't report | |
4619 | * a valid size than 4K is a reasonable minimum | |
4620 | */ | |
4621 | if (FSData->f_bsize < 512) | |
4622 | FSData->f_bsize = 4096; | |
4623 | ||
1da177e4 LT |
4624 | FSData->f_blocks = |
4625 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4626 | FSData->f_bfree = FSData->f_bavail = | |
4627 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4628 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4629 | (unsigned long long)FSData->f_blocks, | |
4630 | (unsigned long long)FSData->f_bfree, | |
4631 | FSData->f_bsize); | |
1da177e4 LT |
4632 | } |
4633 | } | |
4634 | cifs_buf_release(pSMB); | |
4635 | ||
4636 | if (rc == -EAGAIN) | |
4637 | goto QFSInfoRetry; | |
4638 | ||
4639 | return rc; | |
4640 | } | |
4641 | ||
4642 | int | |
6d5786a3 | 4643 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4644 | { |
4645 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4646 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4647 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4648 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4649 | int rc = 0; | |
4650 | int bytes_returned = 0; | |
4651 | __u16 params, byte_count; | |
4652 | ||
f96637be | 4653 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
4654 | QFSAttributeRetry: |
4655 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4656 | (void **) &pSMBr); | |
4657 | if (rc) | |
4658 | return rc; | |
4659 | ||
4660 | params = 2; /* level */ | |
4661 | pSMB->TotalDataCount = 0; | |
4662 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4663 | /* BB find exact max SMB PDU from sess structure BB */ |
4664 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4665 | pSMB->MaxSetupCount = 0; |
4666 | pSMB->Reserved = 0; | |
4667 | pSMB->Flags = 0; | |
4668 | pSMB->Timeout = 0; | |
4669 | pSMB->Reserved2 = 0; | |
4670 | byte_count = params + 1 /* pad */ ; | |
4671 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4672 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4673 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4674 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4675 | pSMB->DataCount = 0; |
4676 | pSMB->DataOffset = 0; | |
4677 | pSMB->SetupCount = 1; | |
4678 | pSMB->Reserved3 = 0; | |
4679 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4680 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4681 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4682 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4683 | ||
4684 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4685 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4686 | if (rc) { | |
f96637be | 4687 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
4688 | } else { /* decode response */ |
4689 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4690 | ||
820a803f | 4691 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4692 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4693 | rc = -EIO; /* bad smb */ |
4694 | } else { | |
4695 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4696 | response_data = | |
4697 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4698 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4699 | data_offset); | |
4700 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4701 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4702 | } |
4703 | } | |
4704 | cifs_buf_release(pSMB); | |
4705 | ||
4706 | if (rc == -EAGAIN) | |
4707 | goto QFSAttributeRetry; | |
4708 | ||
4709 | return rc; | |
4710 | } | |
4711 | ||
4712 | int | |
6d5786a3 | 4713 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4714 | { |
4715 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4716 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4717 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4718 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4719 | int rc = 0; | |
4720 | int bytes_returned = 0; | |
4721 | __u16 params, byte_count; | |
4722 | ||
f96637be | 4723 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
4724 | QFSDeviceRetry: |
4725 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4726 | (void **) &pSMBr); | |
4727 | if (rc) | |
4728 | return rc; | |
4729 | ||
4730 | params = 2; /* level */ | |
4731 | pSMB->TotalDataCount = 0; | |
4732 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4733 | /* BB find exact max SMB PDU from sess structure BB */ |
4734 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4735 | pSMB->MaxSetupCount = 0; |
4736 | pSMB->Reserved = 0; | |
4737 | pSMB->Flags = 0; | |
4738 | pSMB->Timeout = 0; | |
4739 | pSMB->Reserved2 = 0; | |
4740 | byte_count = params + 1 /* pad */ ; | |
4741 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4742 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4743 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4744 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4745 | |
4746 | pSMB->DataCount = 0; | |
4747 | pSMB->DataOffset = 0; | |
4748 | pSMB->SetupCount = 1; | |
4749 | pSMB->Reserved3 = 0; | |
4750 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4751 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4752 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4753 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4754 | ||
4755 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4756 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4757 | if (rc) { | |
f96637be | 4758 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
4759 | } else { /* decode response */ |
4760 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4761 | ||
820a803f JL |
4762 | if (rc || get_bcc(&pSMBr->hdr) < |
4763 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4764 | rc = -EIO; /* bad smb */ |
4765 | else { | |
4766 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4767 | response_data = | |
737b758c SF |
4768 | (FILE_SYSTEM_DEVICE_INFO *) |
4769 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4770 | data_offset); |
4771 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4772 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4773 | } |
4774 | } | |
4775 | cifs_buf_release(pSMB); | |
4776 | ||
4777 | if (rc == -EAGAIN) | |
4778 | goto QFSDeviceRetry; | |
4779 | ||
4780 | return rc; | |
4781 | } | |
4782 | ||
4783 | int | |
6d5786a3 | 4784 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4785 | { |
4786 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4787 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4788 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4789 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4790 | int rc = 0; | |
4791 | int bytes_returned = 0; | |
4792 | __u16 params, byte_count; | |
4793 | ||
f96637be | 4794 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 4795 | QFSUnixRetry: |
f569599a JL |
4796 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4797 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4798 | if (rc) |
4799 | return rc; | |
4800 | ||
4801 | params = 2; /* level */ | |
4802 | pSMB->TotalDataCount = 0; | |
4803 | pSMB->DataCount = 0; | |
4804 | pSMB->DataOffset = 0; | |
4805 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4806 | /* BB find exact max SMB PDU from sess structure BB */ |
4807 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4808 | pSMB->MaxSetupCount = 0; |
4809 | pSMB->Reserved = 0; | |
4810 | pSMB->Flags = 0; | |
4811 | pSMB->Timeout = 0; | |
4812 | pSMB->Reserved2 = 0; | |
4813 | byte_count = params + 1 /* pad */ ; | |
4814 | pSMB->ParameterCount = cpu_to_le16(params); | |
4815 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4816 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4817 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4818 | pSMB->SetupCount = 1; |
4819 | pSMB->Reserved3 = 0; | |
4820 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4821 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4822 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4823 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4824 | ||
4825 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4826 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4827 | if (rc) { | |
f96637be | 4828 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
4829 | } else { /* decode response */ |
4830 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4831 | ||
820a803f | 4832 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4833 | rc = -EIO; /* bad smb */ |
4834 | } else { | |
4835 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4836 | response_data = | |
4837 | (FILE_SYSTEM_UNIX_INFO | |
4838 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4839 | data_offset); | |
4840 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4841 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4842 | } |
4843 | } | |
4844 | cifs_buf_release(pSMB); | |
4845 | ||
4846 | if (rc == -EAGAIN) | |
4847 | goto QFSUnixRetry; | |
4848 | ||
4849 | ||
4850 | return rc; | |
4851 | } | |
4852 | ||
ac67055e | 4853 | int |
6d5786a3 | 4854 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
4855 | { |
4856 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4857 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4858 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4859 | int rc = 0; | |
4860 | int bytes_returned = 0; | |
4861 | __u16 params, param_offset, offset, byte_count; | |
4862 | ||
f96637be | 4863 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 4864 | SETFSUnixRetry: |
f26282c9 | 4865 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4866 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4867 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4868 | if (rc) |
4869 | return rc; | |
4870 | ||
4871 | params = 4; /* 2 bytes zero followed by info level. */ | |
4872 | pSMB->MaxSetupCount = 0; | |
4873 | pSMB->Reserved = 0; | |
4874 | pSMB->Flags = 0; | |
4875 | pSMB->Timeout = 0; | |
4876 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4877 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4878 | - 4; | |
ac67055e JA |
4879 | offset = param_offset + params; |
4880 | ||
4881 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4882 | /* BB find exact max SMB PDU from sess structure BB */ |
4883 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4884 | pSMB->SetupCount = 1; |
4885 | pSMB->Reserved3 = 0; | |
4886 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4887 | byte_count = 1 /* pad */ + params + 12; | |
4888 | ||
4889 | pSMB->DataCount = cpu_to_le16(12); | |
4890 | pSMB->ParameterCount = cpu_to_le16(params); | |
4891 | pSMB->TotalDataCount = pSMB->DataCount; | |
4892 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4893 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4894 | pSMB->DataOffset = cpu_to_le16(offset); | |
4895 | ||
4896 | /* Params. */ | |
4897 | pSMB->FileNum = 0; | |
4898 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4899 | ||
4900 | /* Data. */ | |
4901 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4902 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4903 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4904 | ||
be8e3b00 | 4905 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4906 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4907 | ||
4908 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4909 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4910 | if (rc) { | |
f96637be | 4911 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
4912 | } else { /* decode response */ |
4913 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4914 | if (rc) |
ac67055e | 4915 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4916 | } |
4917 | cifs_buf_release(pSMB); | |
4918 | ||
4919 | if (rc == -EAGAIN) | |
4920 | goto SETFSUnixRetry; | |
4921 | ||
4922 | return rc; | |
4923 | } | |
4924 | ||
4925 | ||
1da177e4 LT |
4926 | |
4927 | int | |
6d5786a3 | 4928 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 4929 | struct kstatfs *FSData) |
1da177e4 LT |
4930 | { |
4931 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4932 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4933 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4934 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4935 | int rc = 0; | |
4936 | int bytes_returned = 0; | |
4937 | __u16 params, byte_count; | |
4938 | ||
f96637be | 4939 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
4940 | QFSPosixRetry: |
4941 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4942 | (void **) &pSMBr); | |
4943 | if (rc) | |
4944 | return rc; | |
4945 | ||
4946 | params = 2; /* level */ | |
4947 | pSMB->TotalDataCount = 0; | |
4948 | pSMB->DataCount = 0; | |
4949 | pSMB->DataOffset = 0; | |
4950 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4951 | /* BB find exact max SMB PDU from sess structure BB */ |
4952 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4953 | pSMB->MaxSetupCount = 0; |
4954 | pSMB->Reserved = 0; | |
4955 | pSMB->Flags = 0; | |
4956 | pSMB->Timeout = 0; | |
4957 | pSMB->Reserved2 = 0; | |
4958 | byte_count = params + 1 /* pad */ ; | |
4959 | pSMB->ParameterCount = cpu_to_le16(params); | |
4960 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4961 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4962 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4963 | pSMB->SetupCount = 1; |
4964 | pSMB->Reserved3 = 0; | |
4965 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4966 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 4967 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4968 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4969 | ||
4970 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4971 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4972 | if (rc) { | |
f96637be | 4973 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
4974 | } else { /* decode response */ |
4975 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4976 | ||
820a803f | 4977 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4978 | rc = -EIO; /* bad smb */ |
4979 | } else { | |
4980 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4981 | response_data = | |
4982 | (FILE_SYSTEM_POSIX_INFO | |
4983 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4984 | data_offset); | |
4985 | FSData->f_bsize = | |
4986 | le32_to_cpu(response_data->BlockSize); | |
5a519bea SF |
4987 | /* |
4988 | * much prefer larger but if server doesn't report | |
4989 | * a valid size than 4K is a reasonable minimum | |
4990 | */ | |
4991 | if (FSData->f_bsize < 512) | |
4992 | FSData->f_bsize = 4096; | |
4993 | ||
1da177e4 LT |
4994 | FSData->f_blocks = |
4995 | le64_to_cpu(response_data->TotalBlocks); | |
4996 | FSData->f_bfree = | |
4997 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4998 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4999 | FSData->f_bavail = FSData->f_bfree; |
5000 | } else { | |
5001 | FSData->f_bavail = | |
50c2f753 | 5002 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5003 | } |
790fe579 | 5004 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5005 | FSData->f_files = |
50c2f753 | 5006 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5007 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5008 | FSData->f_ffree = |
50c2f753 | 5009 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5010 | } |
5011 | } | |
5012 | cifs_buf_release(pSMB); | |
5013 | ||
5014 | if (rc == -EAGAIN) | |
5015 | goto QFSPosixRetry; | |
5016 | ||
5017 | return rc; | |
5018 | } | |
5019 | ||
5020 | ||
d1433418 PS |
5021 | /* |
5022 | * We can not use write of zero bytes trick to set file size due to need for | |
5023 | * large file support. Also note that this SetPathInfo is preferred to | |
5024 | * SetFileInfo based method in next routine which is only needed to work around | |
5025 | * a sharing violation bugin Samba which this routine can run into. | |
5026 | */ | |
1da177e4 | 5027 | int |
6d5786a3 | 5028 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5029 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5030 | bool set_allocation) | |
1da177e4 LT |
5031 | { |
5032 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5033 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5034 | struct file_end_of_file_info *parm_data; | |
5035 | int name_len; | |
5036 | int rc = 0; | |
5037 | int bytes_returned = 0; | |
2baa2682 | 5038 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5039 | |
1da177e4 LT |
5040 | __u16 params, byte_count, data_count, param_offset, offset; |
5041 | ||
f96637be | 5042 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5043 | SetEOFRetry: |
5044 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5045 | (void **) &pSMBr); | |
5046 | if (rc) | |
5047 | return rc; | |
5048 | ||
5049 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5050 | name_len = | |
d1433418 PS |
5051 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5052 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5053 | name_len++; /* trailing null */ |
5054 | name_len *= 2; | |
340625e6 RS |
5055 | } else { |
5056 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5057 | } |
5058 | params = 6 + name_len; | |
26f57364 | 5059 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5060 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5061 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5062 | pSMB->MaxSetupCount = 0; |
5063 | pSMB->Reserved = 0; | |
5064 | pSMB->Flags = 0; | |
5065 | pSMB->Timeout = 0; | |
5066 | pSMB->Reserved2 = 0; | |
5067 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5068 | InformationLevel) - 4; |
1da177e4 | 5069 | offset = param_offset + params; |
d1433418 | 5070 | if (set_allocation) { |
50c2f753 SF |
5071 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5072 | pSMB->InformationLevel = | |
5073 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5074 | else | |
5075 | pSMB->InformationLevel = | |
5076 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5077 | } else /* Set File Size */ { | |
1da177e4 LT |
5078 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5079 | pSMB->InformationLevel = | |
50c2f753 | 5080 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5081 | else |
5082 | pSMB->InformationLevel = | |
50c2f753 | 5083 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5084 | } |
5085 | ||
5086 | parm_data = | |
5087 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5088 | offset); | |
5089 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5090 | pSMB->DataOffset = cpu_to_le16(offset); | |
5091 | pSMB->SetupCount = 1; | |
5092 | pSMB->Reserved3 = 0; | |
5093 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5094 | byte_count = 3 /* pad */ + params + data_count; | |
5095 | pSMB->DataCount = cpu_to_le16(data_count); | |
5096 | pSMB->TotalDataCount = pSMB->DataCount; | |
5097 | pSMB->ParameterCount = cpu_to_le16(params); | |
5098 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5099 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5100 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5101 | parm_data->FileSize = cpu_to_le64(size); |
5102 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5103 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5104 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5105 | if (rc) |
f96637be | 5106 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5107 | |
5108 | cifs_buf_release(pSMB); | |
5109 | ||
5110 | if (rc == -EAGAIN) | |
5111 | goto SetEOFRetry; | |
5112 | ||
5113 | return rc; | |
5114 | } | |
5115 | ||
5116 | int | |
d1433418 PS |
5117 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5118 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5119 | { |
5120 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5121 | struct file_end_of_file_info *parm_data; |
5122 | int rc = 0; | |
1da177e4 LT |
5123 | __u16 params, param_offset, offset, byte_count, count; |
5124 | ||
f96637be JP |
5125 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5126 | (long long)size); | |
cd63499c SF |
5127 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5128 | ||
1da177e4 LT |
5129 | if (rc) |
5130 | return rc; | |
5131 | ||
d1433418 PS |
5132 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5133 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5134 | |
1da177e4 LT |
5135 | params = 6; |
5136 | pSMB->MaxSetupCount = 0; | |
5137 | pSMB->Reserved = 0; | |
5138 | pSMB->Flags = 0; | |
5139 | pSMB->Timeout = 0; | |
5140 | pSMB->Reserved2 = 0; | |
5141 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5142 | offset = param_offset + params; | |
5143 | ||
1da177e4 LT |
5144 | count = sizeof(struct file_end_of_file_info); |
5145 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5146 | /* BB find exact max SMB PDU from sess structure BB */ |
5147 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5148 | pSMB->SetupCount = 1; |
5149 | pSMB->Reserved3 = 0; | |
5150 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5151 | byte_count = 3 /* pad */ + params + count; | |
5152 | pSMB->DataCount = cpu_to_le16(count); | |
5153 | pSMB->ParameterCount = cpu_to_le16(params); | |
5154 | pSMB->TotalDataCount = pSMB->DataCount; | |
5155 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5156 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
e3973ea3 | 5157 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
1da177e4 | 5158 | parm_data = |
e3973ea3 | 5159 | (struct file_end_of_file_info *)(((char *)pSMB) + offset + 4); |
1da177e4 LT |
5160 | pSMB->DataOffset = cpu_to_le16(offset); |
5161 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5162 | pSMB->Fid = cfile->fid.netfid; |
5163 | if (set_allocation) { | |
1da177e4 LT |
5164 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5165 | pSMB->InformationLevel = | |
5166 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5167 | else | |
5168 | pSMB->InformationLevel = | |
5169 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5170 | } else /* Set File Size */ { |
1da177e4 LT |
5171 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5172 | pSMB->InformationLevel = | |
50c2f753 | 5173 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5174 | else |
5175 | pSMB->InformationLevel = | |
50c2f753 | 5176 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5177 | } |
5178 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5179 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5180 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5181 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5182 | cifs_small_buf_release(pSMB); |
1da177e4 | 5183 | if (rc) { |
f96637be JP |
5184 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5185 | rc); | |
1da177e4 LT |
5186 | } |
5187 | ||
50c2f753 | 5188 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5189 | since file handle passed in no longer valid */ |
5190 | ||
5191 | return rc; | |
5192 | } | |
5193 | ||
50c2f753 | 5194 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5195 | an open handle, rather than by pathname - this is awkward due to |
5196 | potential access conflicts on the open, but it is unavoidable for these | |
5197 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5198 | time and resort to the original setpathinfo level which takes the ancient | |
5199 | DOS time format with 2 second granularity */ | |
5200 | int | |
6d5786a3 | 5201 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5202 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5203 | { |
5204 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5205 | char *data_offset; |
5206 | int rc = 0; | |
1da177e4 LT |
5207 | __u16 params, param_offset, offset, byte_count, count; |
5208 | ||
f96637be | 5209 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5210 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5211 | ||
1da177e4 LT |
5212 | if (rc) |
5213 | return rc; | |
5214 | ||
2dd2dfa0 JL |
5215 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5216 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5217 | |
1da177e4 LT |
5218 | params = 6; |
5219 | pSMB->MaxSetupCount = 0; | |
5220 | pSMB->Reserved = 0; | |
5221 | pSMB->Flags = 0; | |
5222 | pSMB->Timeout = 0; | |
5223 | pSMB->Reserved2 = 0; | |
5224 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5225 | offset = param_offset + params; | |
5226 | ||
b2a3ad9c JL |
5227 | data_offset = (char *)pSMB + |
5228 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5229 | |
26f57364 | 5230 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5231 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5232 | /* BB find max SMB PDU from sess */ |
5233 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5234 | pSMB->SetupCount = 1; |
5235 | pSMB->Reserved3 = 0; | |
5236 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5237 | byte_count = 3 /* pad */ + params + count; | |
5238 | pSMB->DataCount = cpu_to_le16(count); | |
5239 | pSMB->ParameterCount = cpu_to_le16(params); | |
5240 | pSMB->TotalDataCount = pSMB->DataCount; | |
5241 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5242 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5243 | pSMB->DataOffset = cpu_to_le16(offset); | |
5244 | pSMB->Fid = fid; | |
5245 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5246 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5247 | else | |
5248 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5249 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5250 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5251 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5252 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5253 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5254 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5255 | if (rc) |
f96637be JP |
5256 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5257 | rc); | |
1da177e4 | 5258 | |
50c2f753 | 5259 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5260 | since file handle passed in no longer valid */ |
5261 | ||
5262 | return rc; | |
5263 | } | |
5264 | ||
6d22f098 | 5265 | int |
6d5786a3 | 5266 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5267 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5268 | { | |
5269 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5270 | char *data_offset; | |
5271 | int rc = 0; | |
5272 | __u16 params, param_offset, offset, byte_count, count; | |
5273 | ||
f96637be | 5274 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5275 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5276 | ||
5277 | if (rc) | |
5278 | return rc; | |
5279 | ||
5280 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5281 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5282 | ||
5283 | params = 6; | |
5284 | pSMB->MaxSetupCount = 0; | |
5285 | pSMB->Reserved = 0; | |
5286 | pSMB->Flags = 0; | |
5287 | pSMB->Timeout = 0; | |
5288 | pSMB->Reserved2 = 0; | |
5289 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5290 | offset = param_offset + params; | |
5291 | ||
2a780e8b SF |
5292 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5293 | data_offset = (char *)(pSMB) + offset + 4; | |
6d22f098 JL |
5294 | |
5295 | count = 1; | |
5296 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5297 | /* BB find max SMB PDU from sess */ | |
5298 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5299 | pSMB->SetupCount = 1; | |
5300 | pSMB->Reserved3 = 0; | |
5301 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5302 | byte_count = 3 /* pad */ + params + count; | |
5303 | pSMB->DataCount = cpu_to_le16(count); | |
5304 | pSMB->ParameterCount = cpu_to_le16(params); | |
5305 | pSMB->TotalDataCount = pSMB->DataCount; | |
5306 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5307 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5308 | pSMB->DataOffset = cpu_to_le16(offset); | |
5309 | pSMB->Fid = fid; | |
5310 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5311 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5312 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5313 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5314 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5315 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5316 | cifs_small_buf_release(pSMB); |
6d22f098 | 5317 | if (rc) |
f96637be | 5318 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5319 | |
5320 | return rc; | |
5321 | } | |
1da177e4 | 5322 | |
8e408fc9 RS |
5323 | static int |
5324 | CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon, | |
5325 | const char *fileName, const FILE_BASIC_INFO *data, | |
5326 | const struct nls_table *nls_codepage, | |
5327 | struct cifs_sb_info *cifs_sb) | |
5328 | { | |
5329 | int oplock = 0; | |
5330 | struct cifs_open_parms oparms; | |
5331 | struct cifs_fid fid; | |
5332 | int rc; | |
5333 | ||
de036dca VL |
5334 | oparms = (struct cifs_open_parms) { |
5335 | .tcon = tcon, | |
5336 | .cifs_sb = cifs_sb, | |
5337 | .desired_access = GENERIC_WRITE, | |
5338 | .create_options = cifs_create_options(cifs_sb, 0), | |
5339 | .disposition = FILE_OPEN, | |
5340 | .path = fileName, | |
5341 | .fid = &fid, | |
5342 | }; | |
8e408fc9 RS |
5343 | |
5344 | rc = CIFS_open(xid, &oparms, &oplock, NULL); | |
5345 | if (rc) | |
5346 | goto out; | |
5347 | ||
5348 | rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid); | |
5349 | CIFSSMBClose(xid, tcon, fid.netfid); | |
5350 | out: | |
5351 | ||
5352 | return rc; | |
5353 | } | |
5354 | ||
1da177e4 | 5355 | int |
6d5786a3 | 5356 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 | 5357 | const char *fileName, const FILE_BASIC_INFO *data, |
8e408fc9 RS |
5358 | const struct nls_table *nls_codepage, |
5359 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
5360 | { |
5361 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5362 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5363 | int name_len; | |
5364 | int rc = 0; | |
5365 | int bytes_returned = 0; | |
5366 | char *data_offset; | |
5367 | __u16 params, param_offset, offset, byte_count, count; | |
8e408fc9 | 5368 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5369 | |
f96637be | 5370 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5371 | |
5372 | SetTimesRetry: | |
5373 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5374 | (void **) &pSMBr); | |
5375 | if (rc) | |
5376 | return rc; | |
5377 | ||
5378 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5379 | name_len = | |
acbbb76a SF |
5380 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5381 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5382 | name_len++; /* trailing null */ |
5383 | name_len *= 2; | |
340625e6 RS |
5384 | } else { |
5385 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5386 | } |
5387 | ||
5388 | params = 6 + name_len; | |
26f57364 | 5389 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5390 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5391 | /* BB find max SMB PDU from sess structure BB */ |
5392 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5393 | pSMB->MaxSetupCount = 0; |
5394 | pSMB->Reserved = 0; | |
5395 | pSMB->Flags = 0; | |
5396 | pSMB->Timeout = 0; | |
5397 | pSMB->Reserved2 = 0; | |
5398 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5399 | InformationLevel) - 4; |
1da177e4 LT |
5400 | offset = param_offset + params; |
5401 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5402 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5403 | pSMB->DataOffset = cpu_to_le16(offset); | |
5404 | pSMB->SetupCount = 1; | |
5405 | pSMB->Reserved3 = 0; | |
5406 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5407 | byte_count = 3 /* pad */ + params + count; | |
5408 | ||
5409 | pSMB->DataCount = cpu_to_le16(count); | |
5410 | pSMB->ParameterCount = cpu_to_le16(params); | |
5411 | pSMB->TotalDataCount = pSMB->DataCount; | |
5412 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5413 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5414 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5415 | else | |
5416 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5417 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5418 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5419 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5420 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5421 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5422 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5423 | if (rc) |
f96637be | 5424 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5425 | |
5426 | cifs_buf_release(pSMB); | |
5427 | ||
5428 | if (rc == -EAGAIN) | |
5429 | goto SetTimesRetry; | |
5430 | ||
8e408fc9 RS |
5431 | if (rc == -EOPNOTSUPP) |
5432 | return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data, | |
5433 | nls_codepage, cifs_sb); | |
5434 | ||
1da177e4 LT |
5435 | return rc; |
5436 | } | |
5437 | ||
654cf14a JL |
5438 | static void |
5439 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5440 | const struct cifs_unix_set_info_args *args) | |
5441 | { | |
49418b2c | 5442 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5443 | u64 mode = args->mode; |
5444 | ||
49418b2c EB |
5445 | if (uid_valid(args->uid)) |
5446 | uid = from_kuid(&init_user_ns, args->uid); | |
5447 | if (gid_valid(args->gid)) | |
5448 | gid = from_kgid(&init_user_ns, args->gid); | |
5449 | ||
654cf14a JL |
5450 | /* |
5451 | * Samba server ignores set of file size to zero due to bugs in some | |
5452 | * older clients, but we should be precise - we use SetFileSize to | |
5453 | * set file size and do not want to truncate file size to zero | |
25985edc | 5454 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5455 | * zero instead of -1 here |
5456 | */ | |
5457 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5458 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5459 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5460 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5461 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5462 | data_offset->Uid = cpu_to_le64(uid); |
5463 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5464 | /* better to leave device as zero when it is */ |
5465 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5466 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5467 | data_offset->Permissions = cpu_to_le64(mode); | |
5468 | ||
5469 | if (S_ISREG(mode)) | |
5470 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5471 | else if (S_ISDIR(mode)) | |
5472 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5473 | else if (S_ISLNK(mode)) | |
5474 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5475 | else if (S_ISCHR(mode)) | |
5476 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5477 | else if (S_ISBLK(mode)) | |
5478 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5479 | else if (S_ISFIFO(mode)) | |
5480 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5481 | else if (S_ISSOCK(mode)) | |
5482 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5483 | } | |
5484 | ||
3bbeeb3c | 5485 | int |
6d5786a3 | 5486 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5487 | const struct cifs_unix_set_info_args *args, |
5488 | u16 fid, u32 pid_of_opener) | |
5489 | { | |
5490 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5491 | char *data_offset; |
3bbeeb3c JL |
5492 | int rc = 0; |
5493 | u16 params, param_offset, offset, byte_count, count; | |
5494 | ||
f96637be | 5495 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5496 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5497 | ||
5498 | if (rc) | |
5499 | return rc; | |
5500 | ||
5501 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5502 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5503 | ||
5504 | params = 6; | |
5505 | pSMB->MaxSetupCount = 0; | |
5506 | pSMB->Reserved = 0; | |
5507 | pSMB->Flags = 0; | |
5508 | pSMB->Timeout = 0; | |
5509 | pSMB->Reserved2 = 0; | |
5510 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5511 | offset = param_offset + params; | |
5512 | ||
b2a3ad9c JL |
5513 | data_offset = (char *)pSMB + |
5514 | offsetof(struct smb_hdr, Protocol) + offset; | |
5515 | ||
3bbeeb3c JL |
5516 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5517 | ||
5518 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5519 | /* BB find max SMB PDU from sess */ | |
5520 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5521 | pSMB->SetupCount = 1; | |
5522 | pSMB->Reserved3 = 0; | |
5523 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5524 | byte_count = 3 /* pad */ + params + count; | |
5525 | pSMB->DataCount = cpu_to_le16(count); | |
5526 | pSMB->ParameterCount = cpu_to_le16(params); | |
5527 | pSMB->TotalDataCount = pSMB->DataCount; | |
5528 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5529 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5530 | pSMB->DataOffset = cpu_to_le16(offset); | |
5531 | pSMB->Fid = fid; | |
5532 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5533 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5534 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5535 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5536 | ||
b2a3ad9c | 5537 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5538 | |
792af7b0 | 5539 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5540 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 5541 | if (rc) |
f96637be JP |
5542 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5543 | rc); | |
3bbeeb3c JL |
5544 | |
5545 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5546 | since file handle passed in no longer valid */ | |
5547 | ||
5548 | return rc; | |
5549 | } | |
5550 | ||
1da177e4 | 5551 | int |
6d5786a3 | 5552 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5553 | const char *file_name, |
01ea95e3 JL |
5554 | const struct cifs_unix_set_info_args *args, |
5555 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5556 | { |
5557 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5558 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5559 | int name_len; | |
5560 | int rc = 0; | |
5561 | int bytes_returned = 0; | |
5562 | FILE_UNIX_BASIC_INFO *data_offset; | |
5563 | __u16 params, param_offset, offset, count, byte_count; | |
5564 | ||
f96637be | 5565 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5566 | setPermsRetry: |
5567 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5568 | (void **) &pSMBr); | |
5569 | if (rc) | |
5570 | return rc; | |
5571 | ||
5572 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5573 | name_len = | |
ff691e96 | 5574 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5575 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5576 | name_len++; /* trailing null */ |
5577 | name_len *= 2; | |
340625e6 RS |
5578 | } else { |
5579 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5580 | } |
5581 | ||
5582 | params = 6 + name_len; | |
26f57364 | 5583 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5584 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5585 | /* BB find max SMB PDU from sess structure BB */ |
5586 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5587 | pSMB->MaxSetupCount = 0; |
5588 | pSMB->Reserved = 0; | |
5589 | pSMB->Flags = 0; | |
5590 | pSMB->Timeout = 0; | |
5591 | pSMB->Reserved2 = 0; | |
5592 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5593 | InformationLevel) - 4; |
1da177e4 | 5594 | offset = param_offset + params; |
b019e118 SF |
5595 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5596 | data_offset = (FILE_UNIX_BASIC_INFO *)((char *) pSMB + offset + 4); | |
1da177e4 LT |
5597 | memset(data_offset, 0, count); |
5598 | pSMB->DataOffset = cpu_to_le16(offset); | |
5599 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5600 | pSMB->SetupCount = 1; | |
5601 | pSMB->Reserved3 = 0; | |
5602 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5603 | byte_count = 3 /* pad */ + params + count; | |
5604 | pSMB->ParameterCount = cpu_to_le16(params); | |
5605 | pSMB->DataCount = cpu_to_le16(count); | |
5606 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5607 | pSMB->TotalDataCount = pSMB->DataCount; | |
5608 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5609 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5610 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5611 | |
654cf14a | 5612 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5613 | |
5614 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5615 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5616 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5617 | if (rc) |
f96637be | 5618 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 5619 | |
0d817bc0 | 5620 | cifs_buf_release(pSMB); |
1da177e4 LT |
5621 | if (rc == -EAGAIN) |
5622 | goto setPermsRetry; | |
5623 | return rc; | |
5624 | } | |
5625 | ||
1da177e4 | 5626 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5627 | /* |
5628 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5629 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5630 | * it looks for that attribute name and stuffs that value into the EAData | |
5631 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5632 | * buffer. In both cases, the return value is either the length of the | |
5633 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5634 | * the data isn't copied to it, but the length is returned. | |
5635 | */ | |
1da177e4 | 5636 | ssize_t |
6d5786a3 | 5637 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
5638 | const unsigned char *searchName, const unsigned char *ea_name, |
5639 | char *EAData, size_t buf_size, | |
67b4c889 | 5640 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5641 | { |
5642 | /* BB assumes one setup word */ | |
5643 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5644 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
5645 | int remap = cifs_remap(cifs_sb); |
5646 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
5647 | int rc = 0; |
5648 | int bytes_returned; | |
6e462b9f | 5649 | int list_len; |
f0d3868b | 5650 | struct fealist *ea_response_data; |
50c2f753 SF |
5651 | struct fea *temp_fea; |
5652 | char *temp_ptr; | |
0cd126b5 | 5653 | char *end_of_smb; |
f0d3868b | 5654 | __u16 params, byte_count, data_offset; |
5980fc96 | 5655 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 5656 | |
f96637be | 5657 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
5658 | QAllEAsRetry: |
5659 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5660 | (void **) &pSMBr); | |
5661 | if (rc) | |
5662 | return rc; | |
5663 | ||
5664 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5665 | list_len = |
acbbb76a SF |
5666 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
5667 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
5668 | list_len++; /* trailing null */ |
5669 | list_len *= 2; | |
340625e6 RS |
5670 | } else { |
5671 | list_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
5672 | } |
5673 | ||
6e462b9f | 5674 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5675 | pSMB->TotalDataCount = 0; |
5676 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5677 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5678 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5679 | pSMB->MaxSetupCount = 0; |
5680 | pSMB->Reserved = 0; | |
5681 | pSMB->Flags = 0; | |
5682 | pSMB->Timeout = 0; | |
5683 | pSMB->Reserved2 = 0; | |
5684 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5685 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5686 | pSMB->DataCount = 0; |
5687 | pSMB->DataOffset = 0; | |
5688 | pSMB->SetupCount = 1; | |
5689 | pSMB->Reserved3 = 0; | |
5690 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5691 | byte_count = params + 1 /* pad */ ; | |
5692 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5693 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5694 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5695 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5696 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5697 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5698 | ||
5699 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5700 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5701 | if (rc) { | |
f96637be | 5702 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
5703 | goto QAllEAsOut; |
5704 | } | |
1da177e4 | 5705 | |
f0d3868b JL |
5706 | |
5707 | /* BB also check enough total bytes returned */ | |
5708 | /* BB we need to improve the validity checking | |
5709 | of these trans2 responses */ | |
5710 | ||
5711 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5712 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5713 | rc = -EIO; /* bad smb */ |
5714 | goto QAllEAsOut; | |
5715 | } | |
5716 | ||
5717 | /* check that length of list is not more than bcc */ | |
5718 | /* check that each entry does not go beyond length | |
5719 | of list */ | |
5720 | /* check that each element of each entry does not | |
5721 | go beyond end of list */ | |
5722 | /* validate_trans2_offsets() */ | |
5723 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5724 | ||
5725 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5726 | ea_response_data = (struct fealist *) | |
5727 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5728 | ||
6e462b9f | 5729 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 5730 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 5731 | if (list_len <= 8) { |
f96637be | 5732 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
5733 | /* didn't find the named attribute */ |
5734 | if (ea_name) | |
5735 | rc = -ENODATA; | |
f0d3868b JL |
5736 | goto QAllEAsOut; |
5737 | } | |
5738 | ||
0cd126b5 | 5739 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5740 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5741 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 5742 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
5743 | rc = -EIO; |
5744 | goto QAllEAsOut; | |
5745 | } | |
5746 | ||
f0d3868b | 5747 | /* account for ea list len */ |
6e462b9f | 5748 | list_len -= 4; |
398d5843 | 5749 | temp_fea = &ea_response_data->list; |
f0d3868b | 5750 | temp_ptr = (char *)temp_fea; |
6e462b9f | 5751 | while (list_len > 0) { |
122ca007 | 5752 | unsigned int name_len; |
f0d3868b | 5753 | __u16 value_len; |
0cd126b5 | 5754 | |
6e462b9f | 5755 | list_len -= 4; |
f0d3868b | 5756 | temp_ptr += 4; |
0cd126b5 JL |
5757 | /* make sure we can read name_len and value_len */ |
5758 | if (list_len < 0) { | |
f96637be | 5759 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5760 | rc = -EIO; |
5761 | goto QAllEAsOut; | |
5762 | } | |
5763 | ||
5764 | name_len = temp_fea->name_len; | |
5765 | value_len = le16_to_cpu(temp_fea->value_len); | |
5766 | list_len -= name_len + 1 + value_len; | |
5767 | if (list_len < 0) { | |
f96637be | 5768 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5769 | rc = -EIO; |
5770 | goto QAllEAsOut; | |
5771 | } | |
5772 | ||
31c0519f | 5773 | if (ea_name) { |
91d065c4 | 5774 | if (ea_name_len == name_len && |
ac423446 | 5775 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
5776 | temp_ptr += name_len + 1; |
5777 | rc = value_len; | |
5778 | if (buf_size == 0) | |
5779 | goto QAllEAsOut; | |
5780 | if ((size_t)value_len > buf_size) { | |
5781 | rc = -ERANGE; | |
5782 | goto QAllEAsOut; | |
5783 | } | |
5784 | memcpy(EAData, temp_ptr, value_len); | |
5785 | goto QAllEAsOut; | |
5786 | } | |
f0d3868b | 5787 | } else { |
31c0519f JL |
5788 | /* account for prefix user. and trailing null */ |
5789 | rc += (5 + 1 + name_len); | |
5790 | if (rc < (int) buf_size) { | |
5791 | memcpy(EAData, "user.", 5); | |
5792 | EAData += 5; | |
5793 | memcpy(EAData, temp_ptr, name_len); | |
5794 | EAData += name_len; | |
5795 | /* null terminate name */ | |
5796 | *EAData = 0; | |
5797 | ++EAData; | |
5798 | } else if (buf_size == 0) { | |
5799 | /* skip copy - calc size only */ | |
5800 | } else { | |
5801 | /* stop before overrun buffer */ | |
5802 | rc = -ERANGE; | |
5803 | break; | |
5804 | } | |
1da177e4 | 5805 | } |
0cd126b5 | 5806 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5807 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5808 | } |
f0d3868b | 5809 | |
31c0519f JL |
5810 | /* didn't find the named attribute */ |
5811 | if (ea_name) | |
5812 | rc = -ENODATA; | |
5813 | ||
f0d3868b | 5814 | QAllEAsOut: |
0d817bc0 | 5815 | cifs_buf_release(pSMB); |
1da177e4 LT |
5816 | if (rc == -EAGAIN) |
5817 | goto QAllEAsRetry; | |
5818 | ||
5819 | return (ssize_t)rc; | |
5820 | } | |
5821 | ||
1da177e4 | 5822 | int |
6d5786a3 PS |
5823 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
5824 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 5825 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 5826 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5827 | { |
5828 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5829 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5830 | struct fealist *parm_data; | |
5831 | int name_len; | |
5832 | int rc = 0; | |
5833 | int bytes_returned = 0; | |
5834 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 5835 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5836 | |
f96637be | 5837 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
5838 | SetEARetry: |
5839 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5840 | (void **) &pSMBr); | |
5841 | if (rc) | |
5842 | return rc; | |
5843 | ||
5844 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5845 | name_len = | |
acbbb76a SF |
5846 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5847 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5848 | name_len++; /* trailing null */ |
5849 | name_len *= 2; | |
340625e6 RS |
5850 | } else { |
5851 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5852 | } |
5853 | ||
5854 | params = 6 + name_len; | |
5855 | ||
5856 | /* done calculating parms using name_len of file name, | |
5857 | now use name_len to calculate length of ea name | |
5858 | we are going to create in the inode xattrs */ | |
790fe579 | 5859 | if (ea_name == NULL) |
1da177e4 LT |
5860 | name_len = 0; |
5861 | else | |
50c2f753 | 5862 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5863 | |
398d5843 | 5864 | count = sizeof(*parm_data) + 1 + ea_value_len + name_len; |
1da177e4 | 5865 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5866 | /* BB find max SMB PDU from sess */ |
5867 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5868 | pSMB->MaxSetupCount = 0; |
5869 | pSMB->Reserved = 0; | |
5870 | pSMB->Flags = 0; | |
5871 | pSMB->Timeout = 0; | |
5872 | pSMB->Reserved2 = 0; | |
5873 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5874 | InformationLevel) - 4; |
1da177e4 LT |
5875 | offset = param_offset + params; |
5876 | pSMB->InformationLevel = | |
5877 | cpu_to_le16(SMB_SET_FILE_EA); | |
5878 | ||
ade7db99 | 5879 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
5880 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
5881 | pSMB->DataOffset = cpu_to_le16(offset); | |
5882 | pSMB->SetupCount = 1; | |
5883 | pSMB->Reserved3 = 0; | |
5884 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5885 | byte_count = 3 /* pad */ + params + count; | |
5886 | pSMB->DataCount = cpu_to_le16(count); | |
5887 | parm_data->list_len = cpu_to_le32(count); | |
398d5843 | 5888 | parm_data->list.EA_flags = 0; |
1da177e4 | 5889 | /* we checked above that name len is less than 255 */ |
398d5843 | 5890 | parm_data->list.name_len = (__u8)name_len; |
1da177e4 | 5891 | /* EA names are always ASCII */ |
790fe579 | 5892 | if (ea_name) |
398d5843 KC |
5893 | strncpy(parm_data->list.name, ea_name, name_len); |
5894 | parm_data->list.name[name_len] = '\0'; | |
5895 | parm_data->list.value_len = cpu_to_le16(ea_value_len); | |
1da177e4 LT |
5896 | /* caller ensures that ea_value_len is less than 64K but |
5897 | we need to ensure that it fits within the smb */ | |
5898 | ||
50c2f753 SF |
5899 | /*BB add length check to see if it would fit in |
5900 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5901 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5902 | if (ea_value_len) | |
398d5843 | 5903 | memcpy(parm_data->list.name + name_len + 1, |
50c2f753 | 5904 | ea_value, ea_value_len); |
1da177e4 LT |
5905 | |
5906 | pSMB->TotalDataCount = pSMB->DataCount; | |
5907 | pSMB->ParameterCount = cpu_to_le16(params); | |
5908 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5909 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5910 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5911 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5912 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5913 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5914 | if (rc) |
f96637be | 5915 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
5916 | |
5917 | cifs_buf_release(pSMB); | |
5918 | ||
5919 | if (rc == -EAGAIN) | |
5920 | goto SetEARetry; | |
5921 | ||
5922 | return rc; | |
5923 | } | |
1da177e4 | 5924 | #endif |