Commit | Line | Data |
---|---|---|
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> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/vfs.h> | |
5a0e3ad6 | 20 | #include <linux/slab.h> |
1da177e4 | 21 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 22 | #include <linux/pagemap.h> |
e28bc5b1 JL |
23 | #include <linux/swap.h> |
24 | #include <linux/task_io_accounting_ops.h> | |
7c0f6ba6 | 25 | #include <linux/uaccess.h> |
1da177e4 LT |
26 | #include "cifspdu.h" |
27 | #include "cifsglob.h" | |
d0d66c44 | 28 | #include "cifsacl.h" |
1da177e4 LT |
29 | #include "cifsproto.h" |
30 | #include "cifs_unicode.h" | |
31 | #include "cifs_debug.h" | |
e28bc5b1 | 32 | #include "fscache.h" |
db223a59 | 33 | #include "smbdirect.h" |
08744015 PA |
34 | #ifdef CONFIG_CIFS_DFS_UPCALL |
35 | #include "dfs_cache.h" | |
36 | #endif | |
1da177e4 LT |
37 | |
38 | #ifdef CONFIG_CIFS_POSIX | |
39 | static struct { | |
40 | int index; | |
41 | char *name; | |
42 | } protocols[] = { | |
50c2f753 | 43 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 44 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
45 | {BAD_PROT, "\2"} |
46 | }; | |
47 | #else | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
790fe579 | 52 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
53 | {BAD_PROT, "\2"} |
54 | }; | |
55 | #endif | |
56 | ||
3979877e SF |
57 | /* define the number of elements in the cifs dialect array */ |
58 | #ifdef CONFIG_CIFS_POSIX | |
3979877e | 59 | #define CIFS_NUM_PROT 2 |
3979877e | 60 | #else /* not posix */ |
3979877e | 61 | #define CIFS_NUM_PROT 1 |
3979877e SF |
62 | #endif /* CIFS_POSIX */ |
63 | ||
1da177e4 | 64 | |
9162ab20 JL |
65 | /* reconnect the socket, tcon, and smb session if needed */ |
66 | static int | |
96daf2b0 | 67 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 68 | { |
c4a5534a | 69 | int rc; |
96daf2b0 | 70 | struct cifs_ses *ses; |
9162ab20 JL |
71 | struct TCP_Server_Info *server; |
72 | struct nls_table *nls_codepage; | |
08744015 | 73 | int retries; |
9162ab20 JL |
74 | |
75 | /* | |
76 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
77 | * tcp and smb session status done differently for those three - in the | |
78 | * calling routine | |
79 | */ | |
80 | if (!tcon) | |
81 | return 0; | |
82 | ||
83 | ses = tcon->ses; | |
84 | server = ses->server; | |
85 | ||
86 | /* | |
87 | * only tree disconnect, open, and write, (and ulogoff which does not | |
88 | * have tcon) are allowed as we start force umount | |
89 | */ | |
d7d7a66a | 90 | spin_lock(&tcon->tc_lock); |
fdf59eb5 | 91 | if (tcon->status == TID_EXITING) { |
9162ab20 JL |
92 | if (smb_command != SMB_COM_WRITE_ANDX && |
93 | smb_command != SMB_COM_OPEN_ANDX && | |
94 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
d7d7a66a | 95 | spin_unlock(&tcon->tc_lock); |
f96637be JP |
96 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
97 | smb_command); | |
9162ab20 JL |
98 | return -ENODEV; |
99 | } | |
100 | } | |
d7d7a66a | 101 | spin_unlock(&tcon->tc_lock); |
9162ab20 | 102 | |
08744015 PA |
103 | retries = server->nr_targets; |
104 | ||
9162ab20 | 105 | /* |
08744015 PA |
106 | * Give demultiplex thread up to 10 seconds to each target available for |
107 | * reconnect -- should be greater than cifs socket timeout which is 7 | |
108 | * seconds. | |
9162ab20 JL |
109 | */ |
110 | while (server->tcpStatus == CifsNeedReconnect) { | |
7ffbe655 PA |
111 | rc = wait_event_interruptible_timeout(server->response_q, |
112 | (server->tcpStatus != CifsNeedReconnect), | |
113 | 10 * HZ); | |
114 | if (rc < 0) { | |
a0a3036b JP |
115 | cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n", |
116 | __func__); | |
7ffbe655 PA |
117 | return -ERESTARTSYS; |
118 | } | |
9162ab20 | 119 | |
fd88ce93 | 120 | /* are we still trying to reconnect? */ |
d7d7a66a | 121 | spin_lock(&server->srv_lock); |
080dc5e5 | 122 | if (server->tcpStatus != CifsNeedReconnect) { |
d7d7a66a | 123 | spin_unlock(&server->srv_lock); |
9162ab20 | 124 | break; |
080dc5e5 | 125 | } |
d7d7a66a | 126 | spin_unlock(&server->srv_lock); |
9162ab20 | 127 | |
09c40b15 | 128 | if (retries && --retries) |
08744015 PA |
129 | continue; |
130 | ||
9162ab20 JL |
131 | /* |
132 | * on "soft" mounts we wait once. Hard mounts keep | |
133 | * retrying until process is killed or server comes | |
134 | * back on-line | |
135 | */ | |
d402539b | 136 | if (!tcon->retry) { |
f96637be | 137 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
138 | return -EHOSTDOWN; |
139 | } | |
08744015 | 140 | retries = server->nr_targets; |
9162ab20 JL |
141 | } |
142 | ||
d1a931ce SP |
143 | spin_lock(&ses->chan_lock); |
144 | if (!cifs_chan_needs_reconnect(ses, server) && !tcon->need_reconnect) { | |
145 | spin_unlock(&ses->chan_lock); | |
9162ab20 | 146 | return 0; |
d1a931ce SP |
147 | } |
148 | spin_unlock(&ses->chan_lock); | |
9162ab20 JL |
149 | |
150 | nls_codepage = load_nls_default(); | |
151 | ||
76e75270 SC |
152 | /* |
153 | * Recheck after acquire mutex. If another thread is negotiating | |
154 | * and the server never sends an answer the socket will be closed | |
155 | * and tcpStatus set to reconnect. | |
156 | */ | |
d7d7a66a | 157 | spin_lock(&server->srv_lock); |
76e75270 | 158 | if (server->tcpStatus == CifsNeedReconnect) { |
d7d7a66a | 159 | spin_unlock(&server->srv_lock); |
76e75270 | 160 | rc = -EHOSTDOWN; |
76e75270 SC |
161 | goto out; |
162 | } | |
d7d7a66a | 163 | spin_unlock(&server->srv_lock); |
76e75270 | 164 | |
d1a931ce SP |
165 | /* |
166 | * need to prevent multiple threads trying to simultaneously | |
167 | * reconnect the same SMB session | |
168 | */ | |
169 | spin_lock(&ses->chan_lock); | |
170 | if (!cifs_chan_needs_reconnect(ses, server)) { | |
171 | spin_unlock(&ses->chan_lock); | |
f486ef8e SP |
172 | |
173 | /* this means that we only need to tree connect */ | |
d1a931ce SP |
174 | if (tcon->need_reconnect) |
175 | goto skip_sess_setup; | |
176 | ||
177 | rc = -EHOSTDOWN; | |
d1a931ce SP |
178 | goto out; |
179 | } | |
180 | spin_unlock(&ses->chan_lock); | |
181 | ||
73f9bfbe | 182 | mutex_lock(&ses->session_mutex); |
f486ef8e | 183 | rc = cifs_negotiate_protocol(0, ses, server); |
d1a931ce | 184 | if (!rc) |
f486ef8e | 185 | rc = cifs_setup_session(0, ses, server, nls_codepage); |
9162ab20 JL |
186 | |
187 | /* do we need to reconnect tcon? */ | |
188 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 189 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
190 | goto out; |
191 | } | |
192 | ||
d1a931ce | 193 | skip_sess_setup: |
aa24d1e9 | 194 | cifs_mark_open_files_invalid(tcon); |
565674d6 | 195 | rc = cifs_tree_connect(0, tcon, nls_codepage); |
d7b619cf | 196 | mutex_unlock(&ses->session_mutex); |
f96637be | 197 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 198 | |
c318e6c2 | 199 | if (rc) { |
a0a3036b | 200 | pr_warn_once("reconnect tcon failed rc = %d\n", rc); |
9162ab20 | 201 | goto out; |
c318e6c2 | 202 | } |
9162ab20 | 203 | |
9162ab20 JL |
204 | atomic_inc(&tconInfoReconnectCount); |
205 | ||
206 | /* tell server Unix caps we support */ | |
864138cb | 207 | if (cap_unix(ses)) |
9162ab20 JL |
208 | reset_cifs_unix_caps(0, tcon, NULL, NULL); |
209 | ||
210 | /* | |
211 | * Removed call to reopen open files here. It is safer (and faster) to | |
212 | * reopen files one at a time as needed in read and write. | |
213 | * | |
214 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
215 | */ | |
216 | ||
217 | out: | |
218 | /* | |
219 | * Check if handle based operation so we know whether we can continue | |
220 | * or not without returning to caller to reset file handle | |
221 | */ | |
222 | switch (smb_command) { | |
223 | case SMB_COM_READ_ANDX: | |
224 | case SMB_COM_WRITE_ANDX: | |
225 | case SMB_COM_CLOSE: | |
226 | case SMB_COM_FIND_CLOSE2: | |
227 | case SMB_COM_LOCKING_ANDX: | |
228 | rc = -EAGAIN; | |
229 | } | |
230 | ||
231 | unload_nls(nls_codepage); | |
232 | return rc; | |
233 | } | |
234 | ||
ad7a2926 SF |
235 | /* Allocate and return pointer to an SMB request buffer, and set basic |
236 | SMB information in the SMB header. If the return code is zero, this | |
237 | function must have filled in request_buf pointer */ | |
1da177e4 | 238 | static int |
96daf2b0 | 239 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 240 | void **request_buf) |
1da177e4 | 241 | { |
f569599a | 242 | int rc; |
1da177e4 | 243 | |
9162ab20 | 244 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 245 | if (rc) |
1da177e4 LT |
246 | return rc; |
247 | ||
248 | *request_buf = cifs_small_buf_get(); | |
249 | if (*request_buf == NULL) { | |
250 | /* BB should we add a retry in here if not a writepage? */ | |
251 | return -ENOMEM; | |
252 | } | |
253 | ||
63135e08 | 254 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 255 | tcon, wct); |
1da177e4 | 256 | |
790fe579 SF |
257 | if (tcon != NULL) |
258 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 259 | |
f569599a | 260 | return 0; |
5815449d SF |
261 | } |
262 | ||
12b3b8ff | 263 | int |
50c2f753 | 264 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 265 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
266 | { |
267 | int rc; | |
50c2f753 | 268 | struct smb_hdr *buffer; |
12b3b8ff | 269 | |
5815449d | 270 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 271 | if (rc) |
12b3b8ff SF |
272 | return rc; |
273 | ||
04fdabe1 | 274 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 275 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
276 | if (ses->capabilities & CAP_UNICODE) |
277 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 278 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
279 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
280 | ||
281 | /* uid, tid can stay at zero as set in header assemble */ | |
282 | ||
50c2f753 | 283 | /* BB add support for turning on the signing when |
12b3b8ff SF |
284 | this function is used after 1st of session setup requests */ |
285 | ||
286 | return rc; | |
287 | } | |
1da177e4 LT |
288 | |
289 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
290 | static int | |
96daf2b0 | 291 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 292 | void **request_buf, void **response_buf) |
1da177e4 | 293 | { |
1da177e4 LT |
294 | *request_buf = cifs_buf_get(); |
295 | if (*request_buf == NULL) { | |
296 | /* BB should we add a retry in here if not a writepage? */ | |
297 | return -ENOMEM; | |
298 | } | |
299 | /* Although the original thought was we needed the response buf for */ | |
300 | /* potential retries of smb operations it turns out we can determine */ | |
301 | /* from the mid flags when the request buffer can be resent without */ | |
302 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 303 | if (response_buf) |
50c2f753 | 304 | *response_buf = *request_buf; |
1da177e4 LT |
305 | |
306 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 307 | wct); |
1da177e4 | 308 | |
790fe579 SF |
309 | if (tcon != NULL) |
310 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 311 | |
f569599a JL |
312 | return 0; |
313 | } | |
314 | ||
315 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
316 | static int | |
96daf2b0 | 317 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
318 | void **request_buf, void **response_buf) |
319 | { | |
320 | int rc; | |
321 | ||
322 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
323 | if (rc) | |
324 | return rc; | |
325 | ||
326 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
327 | } | |
328 | ||
329 | static int | |
96daf2b0 | 330 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
331 | void **request_buf, void **response_buf) |
332 | { | |
d1a931ce SP |
333 | spin_lock(&tcon->ses->chan_lock); |
334 | if (cifs_chan_needs_reconnect(tcon->ses, tcon->ses->server) || | |
335 | tcon->need_reconnect) { | |
336 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a | 337 | return -EHOSTDOWN; |
d1a931ce SP |
338 | } |
339 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a JL |
340 | |
341 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
342 | } |
343 | ||
50c2f753 | 344 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 345 | { |
12df83c9 JL |
346 | unsigned int total_size; |
347 | ||
348 | /* check for plausible wct */ | |
349 | if (pSMB->hdr.WordCount < 10) | |
350 | goto vt2_err; | |
1da177e4 | 351 | |
1da177e4 | 352 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
353 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
354 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
355 | goto vt2_err; | |
356 | ||
12df83c9 JL |
357 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
358 | if (total_size >= 512) | |
359 | goto vt2_err; | |
360 | ||
fd5707e1 JL |
361 | /* check that bcc is at least as big as parms + data, and that it is |
362 | * less than negotiated smb buffer | |
363 | */ | |
12df83c9 JL |
364 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
365 | if (total_size > get_bcc(&pSMB->hdr) || | |
366 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
367 | goto vt2_err; | |
368 | ||
369 | return 0; | |
370 | vt2_err: | |
50c2f753 | 371 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 372 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 373 | return -EINVAL; |
1da177e4 | 374 | } |
690c522f | 375 | |
31d9e2bd | 376 | static int |
3f618223 | 377 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
378 | { |
379 | int rc = 0; | |
380 | u16 count; | |
381 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 382 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
383 | |
384 | count = get_bcc(&pSMBr->hdr); | |
385 | if (count < SMB1_CLIENT_GUID_SIZE) | |
386 | return -EIO; | |
387 | ||
388 | spin_lock(&cifs_tcp_ses_lock); | |
389 | if (server->srv_count > 1) { | |
390 | spin_unlock(&cifs_tcp_ses_lock); | |
391 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
392 | cifs_dbg(FYI, "server UID changed\n"); | |
393 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
394 | } | |
395 | } else { | |
396 | spin_unlock(&cifs_tcp_ses_lock); | |
397 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
398 | } | |
399 | ||
400 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 401 | server->sec_ntlmssp = true; |
31d9e2bd JL |
402 | } else { |
403 | count -= SMB1_CLIENT_GUID_SIZE; | |
404 | rc = decode_negTokenInit( | |
405 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
406 | if (rc != 1) | |
407 | return -EINVAL; | |
31d9e2bd JL |
408 | } |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
9193400b | 413 | static bool |
3f618223 | 414 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 415 | { |
3f618223 JL |
416 | switch (sectype) { |
417 | case RawNTLMSSP: | |
418 | case Kerberos: | |
9193400b | 419 | return true; |
3f618223 JL |
420 | case Unspecified: |
421 | if (global_secflags & | |
422 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
423 | return true; | |
df561f66 | 424 | fallthrough; |
3f618223 JL |
425 | default: |
426 | return false; | |
427 | } | |
9193400b JL |
428 | } |
429 | ||
1da177e4 | 430 | int |
f486ef8e SP |
431 | CIFSSMBNegotiate(const unsigned int xid, |
432 | struct cifs_ses *ses, | |
433 | struct TCP_Server_Info *server) | |
1da177e4 LT |
434 | { |
435 | NEGOTIATE_REQ *pSMB; | |
436 | NEGOTIATE_RSP *pSMBr; | |
437 | int rc = 0; | |
438 | int bytes_returned; | |
3979877e | 439 | int i; |
1da177e4 LT |
440 | u16 count; |
441 | ||
3534b850 JL |
442 | if (!server) { |
443 | WARN(1, "%s: server is NULL!\n", __func__); | |
444 | return -EIO; | |
1da177e4 | 445 | } |
3534b850 | 446 | |
1da177e4 LT |
447 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
448 | (void **) &pSMB, (void **) &pSMBr); | |
449 | if (rc) | |
450 | return rc; | |
750d1151 | 451 | |
88257360 | 452 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 453 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 454 | |
3f618223 | 455 | if (should_set_ext_sec_flag(ses->sectype)) { |
a0a3036b | 456 | cifs_dbg(FYI, "Requesting extended security\n"); |
ac683924 SF |
457 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
458 | } | |
50c2f753 | 459 | |
3979877e | 460 | count = 0; |
bcfb84a9 SR |
461 | /* |
462 | * We know that all the name entries in the protocols array | |
463 | * are short (< 16 bytes anyway) and are NUL terminated. | |
464 | */ | |
50c2f753 | 465 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
bcfb84a9 SR |
466 | size_t len = strlen(protocols[i].name) + 1; |
467 | ||
943deb60 | 468 | memcpy(&pSMB->DialectsArray[count], protocols[i].name, len); |
bcfb84a9 | 469 | count += len; |
3979877e | 470 | } |
be8e3b00 | 471 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
472 | pSMB->ByteCount = cpu_to_le16(count); |
473 | ||
474 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
475 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 476 | if (rc != 0) |
254e55ed SF |
477 | goto neg_err_exit; |
478 | ||
9bf67e51 | 479 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 480 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 481 | /* Check wct = 1 error case */ |
76a3c92e | 482 | if ((pSMBr->hdr.WordCount <= 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 483 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 484 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
485 | could not negotiate a common dialect */ |
486 | rc = -EOPNOTSUPP; | |
487 | goto neg_err_exit; | |
790fe579 | 488 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
489 | /* unknown wct */ |
490 | rc = -EOPNOTSUPP; | |
491 | goto neg_err_exit; | |
492 | } | |
2190eca1 JL |
493 | /* else wct == 17, NTLM or better */ |
494 | ||
96daf2b0 SF |
495 | server->sec_mode = pSMBr->SecurityMode; |
496 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 497 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 498 | |
254e55ed SF |
499 | /* one byte, so no need to convert this or EncryptionKeyLen from |
500 | little endian */ | |
10b9b98e PS |
501 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
502 | cifs_max_pending); | |
45275789 | 503 | set_credits(server, server->maxReq); |
254e55ed | 504 | /* probably no need to store and check maxvcs */ |
c974befa | 505 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
704528d8 | 506 | /* set up max_read for readahead check */ |
1f641d94 | 507 | server->max_read = server->maxBuf; |
eca6acf9 | 508 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 509 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 510 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
511 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
512 | server->timeAdj *= 60; | |
31d9e2bd | 513 | |
e598d1d8 JL |
514 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
515 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 516 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 517 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
518 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
519 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 520 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 521 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 522 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 523 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
524 | } else { |
525 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 526 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 527 | } |
254e55ed | 528 | |
9ddec561 | 529 | if (!rc) |
38d77c50 | 530 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 531 | neg_err_exit: |
4a6d87f1 | 532 | cifs_buf_release(pSMB); |
254e55ed | 533 | |
f96637be | 534 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
535 | return rc; |
536 | } | |
537 | ||
538 | int | |
2e6e02ab | 539 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
540 | { |
541 | struct smb_hdr *smb_buffer; | |
1da177e4 | 542 | int rc = 0; |
1da177e4 | 543 | |
f96637be | 544 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 545 | |
f1987b44 JL |
546 | /* BB: do we need to check this? These should never be NULL. */ |
547 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
548 | return -EIO; | |
1da177e4 | 549 | |
f1987b44 JL |
550 | /* |
551 | * No need to return error on this operation if tid invalidated and | |
552 | * closed on server already e.g. due to tcp session crashing. Also, | |
553 | * the tcon is no longer on the list, so no need to take lock before | |
554 | * checking this. | |
555 | */ | |
d1a931ce SP |
556 | spin_lock(&tcon->ses->chan_lock); |
557 | if ((tcon->need_reconnect) || CIFS_ALL_CHANS_NEED_RECONNECT(tcon->ses)) { | |
558 | spin_unlock(&tcon->ses->chan_lock); | |
559 | return -EIO; | |
560 | } | |
561 | spin_unlock(&tcon->ses->chan_lock); | |
1da177e4 | 562 | |
50c2f753 | 563 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 564 | (void **)&smb_buffer); |
f1987b44 | 565 | if (rc) |
1da177e4 | 566 | return rc; |
133672ef | 567 | |
792af7b0 | 568 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 569 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 570 | if (rc) |
f96637be | 571 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 572 | |
50c2f753 | 573 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 574 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
575 | if (rc == -EAGAIN) |
576 | rc = 0; | |
577 | ||
578 | return rc; | |
579 | } | |
580 | ||
766fdbb5 JL |
581 | /* |
582 | * This is a no-op for now. We're not really interested in the reply, but | |
583 | * rather in the fact that the server sent one and that server->lstrp | |
584 | * gets updated. | |
585 | * | |
586 | * FIXME: maybe we should consider checking that the reply matches request? | |
587 | */ | |
588 | static void | |
589 | cifs_echo_callback(struct mid_q_entry *mid) | |
590 | { | |
591 | struct TCP_Server_Info *server = mid->callback_data; | |
34f4deb7 | 592 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
766fdbb5 | 593 | |
70f08f91 | 594 | release_mid(mid); |
34f4deb7 | 595 | add_credits(server, &credits, CIFS_ECHO_OP); |
766fdbb5 JL |
596 | } |
597 | ||
598 | int | |
599 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
600 | { | |
601 | ECHO_REQ *smb; | |
602 | int rc = 0; | |
738f9de5 PS |
603 | struct kvec iov[2]; |
604 | struct smb_rqst rqst = { .rq_iov = iov, | |
605 | .rq_nvec = 2 }; | |
766fdbb5 | 606 | |
f96637be | 607 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
608 | |
609 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
610 | if (rc) | |
611 | return rc; | |
612 | ||
26c9cb66 SF |
613 | if (server->capabilities & CAP_UNICODE) |
614 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
615 | ||
766fdbb5 | 616 | /* set up echo request */ |
5443d130 | 617 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
618 | smb->hdr.WordCount = 1; |
619 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 620 | put_bcc(1, &smb->hdr); |
766fdbb5 | 621 | smb->Data[0] = 'a'; |
be8e3b00 | 622 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
623 | |
624 | iov[0].iov_len = 4; | |
625 | iov[0].iov_base = smb; | |
626 | iov[1].iov_len = get_rfc1002_length(smb); | |
627 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 628 | |
9b7c18a2 | 629 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
392e1c5d | 630 | server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL); |
766fdbb5 | 631 | if (rc) |
f96637be | 632 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
633 | |
634 | cifs_small_buf_release(smb); | |
635 | ||
636 | return rc; | |
637 | } | |
638 | ||
1da177e4 | 639 | int |
58c45c58 | 640 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 641 | { |
1da177e4 LT |
642 | LOGOFF_ANDX_REQ *pSMB; |
643 | int rc = 0; | |
1da177e4 | 644 | |
f96637be | 645 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 646 | |
14fbf50d JL |
647 | /* |
648 | * BB: do we need to check validity of ses and server? They should | |
649 | * always be valid since we have an active reference. If not, that | |
650 | * should probably be a BUG() | |
651 | */ | |
652 | if (!ses || !ses->server) | |
3b795210 SF |
653 | return -EIO; |
654 | ||
d7b619cf | 655 | mutex_lock(&ses->session_mutex); |
d1a931ce SP |
656 | spin_lock(&ses->chan_lock); |
657 | if (CIFS_ALL_CHANS_NEED_RECONNECT(ses)) { | |
658 | spin_unlock(&ses->chan_lock); | |
3b795210 SF |
659 | goto session_already_dead; /* no need to send SMBlogoff if uid |
660 | already closed due to reconnect */ | |
d1a931ce SP |
661 | } |
662 | spin_unlock(&ses->chan_lock); | |
663 | ||
1da177e4 LT |
664 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
665 | if (rc) { | |
d7b619cf | 666 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
667 | return rc; |
668 | } | |
669 | ||
88257360 | 670 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 671 | |
38d77c50 JL |
672 | if (ses->server->sign) |
673 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
674 | |
675 | pSMB->hdr.Uid = ses->Suid; | |
676 | ||
677 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 678 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 679 | cifs_small_buf_release(pSMB); |
3b795210 | 680 | session_already_dead: |
d7b619cf | 681 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
682 | |
683 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 684 | since server closed smb session, no sense reporting |
1da177e4 LT |
685 | error */ |
686 | if (rc == -EAGAIN) | |
687 | rc = 0; | |
688 | return rc; | |
689 | } | |
690 | ||
2d785a50 | 691 | int |
6d5786a3 PS |
692 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
693 | const char *fileName, __u16 type, | |
694 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
695 | { |
696 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
697 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
698 | struct unlink_psx_rq *pRqD; | |
699 | int name_len; | |
700 | int rc = 0; | |
701 | int bytes_returned = 0; | |
702 | __u16 params, param_offset, offset, byte_count; | |
703 | ||
f96637be | 704 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
705 | PsxDelete: |
706 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
707 | (void **) &pSMBr); | |
708 | if (rc) | |
709 | return rc; | |
710 | ||
711 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
712 | name_len = | |
acbbb76a SF |
713 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
714 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
715 | name_len++; /* trailing null */ |
716 | name_len *= 2; | |
340625e6 RS |
717 | } else { |
718 | name_len = copy_path_name(pSMB->FileName, fileName); | |
2d785a50 SF |
719 | } |
720 | ||
721 | params = 6 + name_len; | |
722 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
723 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
724 | pSMB->MaxSetupCount = 0; | |
725 | pSMB->Reserved = 0; | |
726 | pSMB->Flags = 0; | |
727 | pSMB->Timeout = 0; | |
728 | pSMB->Reserved2 = 0; | |
729 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
730 | InformationLevel) - 4; | |
731 | offset = param_offset + params; | |
732 | ||
7b09d4e0 SF |
733 | /* Setup pointer to Request Data (inode type). |
734 | * Note that SMB offsets are from the beginning of SMB which is 4 bytes | |
735 | * in, after RFC1001 field | |
736 | */ | |
737 | pRqD = (struct unlink_psx_rq *)((char *)(pSMB) + offset + 4); | |
2d785a50 SF |
738 | pRqD->type = cpu_to_le16(type); |
739 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
740 | pSMB->DataOffset = cpu_to_le16(offset); | |
741 | pSMB->SetupCount = 1; | |
742 | pSMB->Reserved3 = 0; | |
743 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
744 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
745 | ||
746 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
747 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
748 | pSMB->ParameterCount = cpu_to_le16(params); | |
749 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
750 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
751 | pSMB->Reserved4 = 0; | |
be8e3b00 | 752 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
753 | pSMB->ByteCount = cpu_to_le16(byte_count); |
754 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
755 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 756 | if (rc) |
f96637be | 757 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
758 | cifs_buf_release(pSMB); |
759 | ||
44c58186 | 760 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
761 | |
762 | if (rc == -EAGAIN) | |
763 | goto PsxDelete; | |
764 | ||
765 | return rc; | |
766 | } | |
767 | ||
1da177e4 | 768 | int |
ed6875e0 PS |
769 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
770 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
771 | { |
772 | DELETE_FILE_REQ *pSMB = NULL; | |
773 | DELETE_FILE_RSP *pSMBr = NULL; | |
774 | int rc = 0; | |
775 | int bytes_returned; | |
776 | int name_len; | |
2baa2682 | 777 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
778 | |
779 | DelFileRetry: | |
780 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
781 | (void **) &pSMBr); | |
782 | if (rc) | |
783 | return rc; | |
784 | ||
785 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
786 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
787 | PATH_MAX, cifs_sb->local_nls, | |
788 | remap); | |
1da177e4 LT |
789 | name_len++; /* trailing null */ |
790 | name_len *= 2; | |
340625e6 RS |
791 | } else { |
792 | name_len = copy_path_name(pSMB->fileName, name); | |
1da177e4 LT |
793 | } |
794 | pSMB->SearchAttributes = | |
795 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
796 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 797 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
798 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
799 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
800 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 801 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 802 | if (rc) |
f96637be | 803 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
804 | |
805 | cifs_buf_release(pSMB); | |
806 | if (rc == -EAGAIN) | |
807 | goto DelFileRetry; | |
808 | ||
809 | return rc; | |
810 | } | |
811 | ||
812 | int | |
f958ca5d PS |
813 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
814 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
815 | { |
816 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
817 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
818 | int rc = 0; | |
819 | int bytes_returned; | |
820 | int name_len; | |
2baa2682 | 821 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 822 | |
f96637be | 823 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
824 | RmDirRetry: |
825 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
826 | (void **) &pSMBr); | |
827 | if (rc) | |
828 | return rc; | |
829 | ||
830 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
831 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
832 | PATH_MAX, cifs_sb->local_nls, | |
833 | remap); | |
1da177e4 LT |
834 | name_len++; /* trailing null */ |
835 | name_len *= 2; | |
340625e6 RS |
836 | } else { |
837 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
838 | } |
839 | ||
840 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 841 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
842 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
843 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
844 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 845 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 846 | if (rc) |
f96637be | 847 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
848 | |
849 | cifs_buf_release(pSMB); | |
850 | if (rc == -EAGAIN) | |
851 | goto RmDirRetry; | |
852 | return rc; | |
853 | } | |
854 | ||
855 | int | |
c3ca78e2 SF |
856 | CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode, |
857 | struct cifs_tcon *tcon, const char *name, | |
f436720e | 858 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
859 | { |
860 | int rc = 0; | |
861 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
862 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
863 | int bytes_returned; | |
864 | int name_len; | |
2baa2682 | 865 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 866 | |
f96637be | 867 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
868 | MkDirRetry: |
869 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
870 | (void **) &pSMBr); | |
871 | if (rc) | |
872 | return rc; | |
873 | ||
874 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 875 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
876 | PATH_MAX, cifs_sb->local_nls, |
877 | remap); | |
1da177e4 LT |
878 | name_len++; /* trailing null */ |
879 | name_len *= 2; | |
340625e6 RS |
880 | } else { |
881 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
882 | } |
883 | ||
884 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 885 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
886 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
887 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
888 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 889 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 890 | if (rc) |
f96637be | 891 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 892 | |
1da177e4 LT |
893 | cifs_buf_release(pSMB); |
894 | if (rc == -EAGAIN) | |
895 | goto MkDirRetry; | |
896 | return rc; | |
897 | } | |
898 | ||
2dd29d31 | 899 | int |
6d5786a3 PS |
900 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
901 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
902 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
903 | const char *name, const struct nls_table *nls_codepage, | |
904 | int remap) | |
2dd29d31 SF |
905 | { |
906 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
907 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
908 | int name_len; | |
909 | int rc = 0; | |
910 | int bytes_returned = 0; | |
2dd29d31 | 911 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
912 | OPEN_PSX_REQ *pdata; |
913 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 914 | |
f96637be | 915 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
916 | PsxCreat: |
917 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
918 | (void **) &pSMBr); | |
919 | if (rc) | |
920 | return rc; | |
921 | ||
922 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
923 | name_len = | |
acbbb76a SF |
924 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
925 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
926 | name_len++; /* trailing null */ |
927 | name_len *= 2; | |
340625e6 RS |
928 | } else { |
929 | name_len = copy_path_name(pSMB->FileName, name); | |
2dd29d31 SF |
930 | } |
931 | ||
932 | params = 6 + name_len; | |
933 | count = sizeof(OPEN_PSX_REQ); | |
934 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
935 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
936 | pSMB->MaxSetupCount = 0; | |
937 | pSMB->Reserved = 0; | |
938 | pSMB->Flags = 0; | |
939 | pSMB->Timeout = 0; | |
940 | pSMB->Reserved2 = 0; | |
941 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 942 | InformationLevel) - 4; |
2dd29d31 | 943 | offset = param_offset + params; |
21a64910 SF |
944 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
945 | pdata = (OPEN_PSX_REQ *)((char *)(pSMB) + offset + 4); | |
8f2376ad | 946 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 947 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 948 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
949 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
950 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
951 | pSMB->DataOffset = cpu_to_le16(offset); | |
952 | pSMB->SetupCount = 1; | |
953 | pSMB->Reserved3 = 0; | |
954 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
955 | byte_count = 3 /* pad */ + params + count; | |
956 | ||
957 | pSMB->DataCount = cpu_to_le16(count); | |
958 | pSMB->ParameterCount = cpu_to_le16(params); | |
959 | pSMB->TotalDataCount = pSMB->DataCount; | |
960 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
961 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
962 | pSMB->Reserved4 = 0; | |
be8e3b00 | 963 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
964 | pSMB->ByteCount = cpu_to_le16(byte_count); |
965 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
966 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
967 | if (rc) { | |
f96637be | 968 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
969 | goto psx_create_err; |
970 | } | |
971 | ||
f96637be | 972 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
973 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
974 | ||
820a803f | 975 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
976 | rc = -EIO; /* bad smb */ |
977 | goto psx_create_err; | |
978 | } | |
979 | ||
980 | /* copy return information to pRetData */ | |
50c2f753 | 981 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 982 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 983 | |
2dd29d31 | 984 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 985 | if (netfid) |
2dd29d31 SF |
986 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
987 | /* Let caller know file was created so we can set the mode. */ | |
988 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 989 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
990 | *pOplock |= CIFS_CREATE_ACTION; |
991 | /* check to make sure response data is there */ | |
8f2376ad CG |
992 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
993 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 994 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 995 | } else { |
820a803f | 996 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 997 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 998 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 999 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1000 | goto psx_create_err; |
1001 | } | |
50c2f753 | 1002 | memcpy((char *) pRetData, |
cbac3cba | 1003 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1004 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1005 | } |
2dd29d31 SF |
1006 | |
1007 | psx_create_err: | |
1008 | cifs_buf_release(pSMB); | |
1009 | ||
65bc98b0 | 1010 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1011 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1012 | else |
44c58186 | 1013 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1014 | |
1015 | if (rc == -EAGAIN) | |
1016 | goto PsxCreat; | |
1017 | ||
50c2f753 | 1018 | return rc; |
2dd29d31 SF |
1019 | } |
1020 | ||
a9d02ad4 SF |
1021 | static __u16 convert_disposition(int disposition) |
1022 | { | |
1023 | __u16 ofun = 0; | |
1024 | ||
1025 | switch (disposition) { | |
1026 | case FILE_SUPERSEDE: | |
1027 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1028 | break; | |
1029 | case FILE_OPEN: | |
1030 | ofun = SMBOPEN_OAPPEND; | |
1031 | break; | |
1032 | case FILE_CREATE: | |
1033 | ofun = SMBOPEN_OCREATE; | |
1034 | break; | |
1035 | case FILE_OPEN_IF: | |
1036 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1037 | break; | |
1038 | case FILE_OVERWRITE: | |
1039 | ofun = SMBOPEN_OTRUNC; | |
1040 | break; | |
1041 | case FILE_OVERWRITE_IF: | |
1042 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1043 | break; | |
1044 | default: | |
f96637be | 1045 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1046 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1047 | } | |
1048 | return ofun; | |
1049 | } | |
1050 | ||
35fc37d5 JL |
1051 | static int |
1052 | access_flags_to_smbopen_mode(const int access_flags) | |
1053 | { | |
1054 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1055 | ||
1056 | if (masked_flags == GENERIC_READ) | |
1057 | return SMBOPEN_READ; | |
1058 | else if (masked_flags == GENERIC_WRITE) | |
1059 | return SMBOPEN_WRITE; | |
1060 | ||
1061 | /* just go for read/write */ | |
1062 | return SMBOPEN_READWRITE; | |
1063 | } | |
1064 | ||
a9d02ad4 | 1065 | int |
6d5786a3 | 1066 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1067 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1068 | const int access_flags, const int create_options, __u16 *netfid, |
1069 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1070 | const struct nls_table *nls_codepage, int remap) |
1071 | { | |
032e091d | 1072 | int rc; |
a9d02ad4 SF |
1073 | OPENX_REQ *pSMB = NULL; |
1074 | OPENX_RSP *pSMBr = NULL; | |
1075 | int bytes_returned; | |
1076 | int name_len; | |
1077 | __u16 count; | |
1078 | ||
1079 | OldOpenRetry: | |
1080 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1081 | (void **) &pSMBr); | |
1082 | if (rc) | |
1083 | return rc; | |
1084 | ||
1085 | pSMB->AndXCommand = 0xFF; /* none */ | |
1086 | ||
1087 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1088 | count = 1; /* account for one byte pad to word boundary */ | |
1089 | name_len = | |
acbbb76a SF |
1090 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1091 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1092 | name_len++; /* trailing null */ |
1093 | name_len *= 2; | |
340625e6 | 1094 | } else { |
a9d02ad4 | 1095 | count = 0; /* no pad */ |
340625e6 | 1096 | name_len = copy_path_name(pSMB->fileName, fileName); |
a9d02ad4 SF |
1097 | } |
1098 | if (*pOplock & REQ_OPLOCK) | |
1099 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1100 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1101 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1102 | |
a9d02ad4 | 1103 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1104 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1105 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1106 | /* set file as system file if special file such | |
1107 | as fifo and server expecting SFU style and | |
1108 | no Unix extensions */ | |
1109 | ||
790fe579 SF |
1110 | if (create_options & CREATE_OPTION_SPECIAL) |
1111 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1112 | else /* BB FIXME BB */ |
1113 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1114 | |
67750fb9 JL |
1115 | if (create_options & CREATE_OPTION_READONLY) |
1116 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1117 | |
1118 | /* BB FIXME BB */ | |
50c2f753 SF |
1119 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1120 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1121 | /* BB FIXME END BB */ |
3e87d803 SF |
1122 | |
1123 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1124 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1125 | count += name_len; |
be8e3b00 | 1126 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1127 | |
1128 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1129 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1130 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1131 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1132 | if (rc) { |
f96637be | 1133 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1134 | } else { |
1135 | /* BB verify if wct == 15 */ | |
1136 | ||
582d21e5 | 1137 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1138 | |
1139 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1140 | /* Let caller know file was created so we can set the mode. */ | |
1141 | /* Do we care about the CreateAction in any other cases? */ | |
1142 | /* BB FIXME BB */ | |
790fe579 | 1143 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1144 | *pOplock |= CIFS_CREATE_ACTION; */ |
1145 | /* BB FIXME END */ | |
1146 | ||
790fe579 | 1147 | if (pfile_info) { |
a9d02ad4 SF |
1148 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1149 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1150 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1151 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1152 | pfile_info->Attributes = |
50c2f753 | 1153 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1154 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1155 | pfile_info->AllocationSize = |
1156 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1157 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1158 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1159 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1160 | } |
1161 | } | |
1162 | ||
1163 | cifs_buf_release(pSMB); | |
1164 | if (rc == -EAGAIN) | |
1165 | goto OldOpenRetry; | |
1166 | return rc; | |
1167 | } | |
1168 | ||
1da177e4 | 1169 | int |
d81b8a40 PS |
1170 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1171 | FILE_ALL_INFO *buf) | |
1da177e4 | 1172 | { |
1afdea4f | 1173 | int rc; |
9bf4fa01 PS |
1174 | OPEN_REQ *req = NULL; |
1175 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1176 | int bytes_returned; |
1177 | int name_len; | |
1178 | __u16 count; | |
d81b8a40 PS |
1179 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1180 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1181 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1182 | const struct nls_table *nls = cifs_sb->local_nls; |
1183 | int create_options = oparms->create_options; | |
1184 | int desired_access = oparms->desired_access; | |
1185 | int disposition = oparms->disposition; | |
1186 | const char *path = oparms->path; | |
1da177e4 LT |
1187 | |
1188 | openRetry: | |
9bf4fa01 PS |
1189 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1190 | (void **)&rsp); | |
1da177e4 LT |
1191 | if (rc) |
1192 | return rc; | |
1193 | ||
9bf4fa01 PS |
1194 | /* no commands go after this */ |
1195 | req->AndXCommand = 0xFF; | |
1da177e4 | 1196 | |
9bf4fa01 PS |
1197 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1198 | /* account for one byte pad to word boundary */ | |
1199 | count = 1; | |
1200 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1201 | path, PATH_MAX, nls, remap); | |
1202 | /* trailing null */ | |
1203 | name_len++; | |
1da177e4 | 1204 | name_len *= 2; |
9bf4fa01 PS |
1205 | req->NameLength = cpu_to_le16(name_len); |
1206 | } else { | |
1207 | /* BB improve check for buffer overruns BB */ | |
1208 | /* no pad */ | |
1209 | count = 0; | |
340625e6 | 1210 | name_len = copy_path_name(req->fileName, path); |
9bf4fa01 | 1211 | req->NameLength = cpu_to_le16(name_len); |
1da177e4 | 1212 | } |
9bf4fa01 PS |
1213 | |
1214 | if (*oplock & REQ_OPLOCK) | |
1215 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1216 | else if (*oplock & REQ_BATCHOPLOCK) | |
1217 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1218 | ||
1219 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1220 | req->AllocationSize = 0; | |
1221 | ||
1222 | /* | |
1223 | * Set file as system file if special file such as fifo and server | |
1224 | * expecting SFU style and no Unix extensions. | |
1225 | */ | |
790fe579 | 1226 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1227 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1228 | else |
9bf4fa01 | 1229 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1230 | |
9bf4fa01 PS |
1231 | /* |
1232 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1233 | * sensitive checks for other servers such as Samba. | |
1234 | */ | |
1da177e4 | 1235 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1236 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1237 | |
67750fb9 | 1238 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1239 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1240 | ||
1241 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1242 | req->CreateDisposition = cpu_to_le32(disposition); | |
1243 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1244 | |
09d1db5c | 1245 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1246 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1247 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1248 | |
1249 | count += name_len; | |
9bf4fa01 | 1250 | inc_rfc1001_len(req, count); |
1da177e4 | 1251 | |
9bf4fa01 PS |
1252 | req->ByteCount = cpu_to_le16(count); |
1253 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1254 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1255 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1256 | if (rc) { |
f96637be | 1257 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1258 | cifs_buf_release(req); |
1259 | if (rc == -EAGAIN) | |
1260 | goto openRetry; | |
1261 | return rc; | |
1da177e4 | 1262 | } |
a5a2b489 | 1263 | |
9bf4fa01 PS |
1264 | /* 1 byte no need to le_to_cpu */ |
1265 | *oplock = rsp->OplockLevel; | |
1266 | /* cifs fid stays in le */ | |
d81b8a40 | 1267 | oparms->fid->netfid = rsp->Fid; |
86f740f2 | 1268 | oparms->fid->access = desired_access; |
9bf4fa01 PS |
1269 | |
1270 | /* Let caller know file was created so we can set the mode. */ | |
1271 | /* Do we care about the CreateAction in any other cases? */ | |
1272 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1273 | *oplock |= CIFS_CREATE_ACTION; | |
1274 | ||
1275 | if (buf) { | |
1276 | /* copy from CreationTime to Attributes */ | |
1277 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1278 | /* the file_info buf is endian converted by caller */ | |
1279 | buf->AllocationSize = rsp->AllocationSize; | |
1280 | buf->EndOfFile = rsp->EndOfFile; | |
1281 | buf->NumberOfLinks = cpu_to_le32(1); | |
1282 | buf->DeletePending = 0; | |
1283 | } | |
1284 | ||
1285 | cifs_buf_release(req); | |
1da177e4 LT |
1286 | return rc; |
1287 | } | |
1288 | ||
e28bc5b1 JL |
1289 | static void |
1290 | cifs_readv_callback(struct mid_q_entry *mid) | |
1291 | { | |
1292 | struct cifs_readdata *rdata = mid->callback_data; | |
1293 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1294 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1295 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1296 | .rq_nvec = 2, | |
8321fec4 | 1297 | .rq_pages = rdata->pages, |
6d3adb23 | 1298 | .rq_offset = rdata->page_offset, |
8321fec4 JL |
1299 | .rq_npages = rdata->nr_pages, |
1300 | .rq_pagesz = rdata->pagesz, | |
1301 | .rq_tailsz = rdata->tailsz }; | |
34f4deb7 | 1302 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
e28bc5b1 | 1303 | |
f96637be JP |
1304 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1305 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1306 | rdata->bytes); | |
e28bc5b1 | 1307 | |
7c9421e1 | 1308 | switch (mid->mid_state) { |
e28bc5b1 JL |
1309 | case MID_RESPONSE_RECEIVED: |
1310 | /* result already set, check signature */ | |
38d77c50 | 1311 | if (server->sign) { |
985e4ff0 SF |
1312 | int rc = 0; |
1313 | ||
bf5ea0e2 | 1314 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1315 | mid->sequence_number); |
985e4ff0 | 1316 | if (rc) |
f96637be JP |
1317 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1318 | rc); | |
e28bc5b1 JL |
1319 | } |
1320 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1321 | task_io_account_read(rdata->got_bytes); |
1322 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1323 | break; |
1324 | case MID_REQUEST_SUBMITTED: | |
1325 | case MID_RETRY_NEEDED: | |
1326 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1327 | if (server->sign && rdata->got_bytes) |
1328 | /* reset bytes number since we can not check a sign */ | |
1329 | rdata->got_bytes = 0; | |
1330 | /* FIXME: should this be counted toward the initiating task? */ | |
1331 | task_io_account_read(rdata->got_bytes); | |
1332 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1333 | break; |
1334 | default: | |
1335 | rdata->result = -EIO; | |
1336 | } | |
1337 | ||
da472fc8 | 1338 | queue_work(cifsiod_wq, &rdata->work); |
70f08f91 | 1339 | release_mid(mid); |
34f4deb7 | 1340 | add_credits(server, &credits, 0); |
e28bc5b1 JL |
1341 | } |
1342 | ||
1343 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1344 | int | |
1345 | cifs_async_readv(struct cifs_readdata *rdata) | |
1346 | { | |
1347 | int rc; | |
1348 | READ_REQ *smb = NULL; | |
1349 | int wct; | |
1350 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1351 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1352 | .rq_nvec = 2 }; | |
e28bc5b1 | 1353 | |
f96637be JP |
1354 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1355 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1356 | |
1357 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1358 | wct = 12; | |
1359 | else { | |
1360 | wct = 10; /* old style read */ | |
1361 | if ((rdata->offset >> 32) > 0) { | |
1362 | /* can not handle this big offset for old */ | |
1363 | return -EIO; | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1368 | if (rc) | |
1369 | return rc; | |
1370 | ||
1371 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1372 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1373 | ||
1374 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1375 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1376 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1377 | if (wct == 12) | |
1378 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1379 | smb->Remaining = 0; | |
1380 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1381 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1382 | if (wct == 12) | |
1383 | smb->ByteCount = 0; | |
1384 | else { | |
1385 | /* old style read */ | |
1386 | struct smb_com_readx_req *smbr = | |
1387 | (struct smb_com_readx_req *)smb; | |
1388 | smbr->ByteCount = 0; | |
1389 | } | |
1390 | ||
1391 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1392 | rdata->iov[0].iov_base = smb; |
1393 | rdata->iov[0].iov_len = 4; | |
1394 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1395 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1396 | |
6993f74a | 1397 | kref_get(&rdata->refcount); |
fec344e3 | 1398 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
3349c3a7 | 1399 | cifs_readv_callback, NULL, rdata, 0, NULL); |
e28bc5b1 JL |
1400 | |
1401 | if (rc == 0) | |
44c58186 | 1402 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1403 | else |
1404 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1405 | |
1406 | cifs_small_buf_release(smb); | |
1407 | return rc; | |
1408 | } | |
1409 | ||
1da177e4 | 1410 | int |
6d5786a3 PS |
1411 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1412 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1413 | { |
1414 | int rc = -EACCES; | |
1415 | READ_REQ *pSMB = NULL; | |
1416 | READ_RSP *pSMBr = NULL; | |
1417 | char *pReadData = NULL; | |
bfa0d75a | 1418 | int wct; |
ec637e3f SF |
1419 | int resp_buf_type = 0; |
1420 | struct kvec iov[1]; | |
da502f7d | 1421 | struct kvec rsp_iov; |
d4ffff1f PS |
1422 | __u32 pid = io_parms->pid; |
1423 | __u16 netfid = io_parms->netfid; | |
1424 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1425 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1426 | unsigned int count = io_parms->length; |
1da177e4 | 1427 | |
f96637be | 1428 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1429 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1430 | wct = 12; |
4c3130ef | 1431 | else { |
bfa0d75a | 1432 | wct = 10; /* old style read */ |
d4ffff1f | 1433 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1434 | /* can not handle this big offset for old */ |
1435 | return -EIO; | |
1436 | } | |
1437 | } | |
1da177e4 LT |
1438 | |
1439 | *nbytes = 0; | |
ec637e3f | 1440 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1441 | if (rc) |
1442 | return rc; | |
1443 | ||
d4ffff1f PS |
1444 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1445 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1446 | ||
1da177e4 LT |
1447 | /* tcon and ses pointer are checked in smb_init */ |
1448 | if (tcon->ses->server == NULL) | |
1449 | return -ECONNABORTED; | |
1450 | ||
ec637e3f | 1451 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1452 | pSMB->Fid = netfid; |
d4ffff1f | 1453 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1454 | if (wct == 12) |
d4ffff1f | 1455 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1456 | |
1da177e4 LT |
1457 | pSMB->Remaining = 0; |
1458 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1459 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1460 | if (wct == 12) |
bfa0d75a SF |
1461 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1462 | else { | |
1463 | /* old style read */ | |
50c2f753 | 1464 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1465 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1466 | pSMBW->ByteCount = 0; |
bfa0d75a | 1467 | } |
ec637e3f SF |
1468 | |
1469 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1470 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1471 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1472 | CIFS_LOG_ERROR, &rsp_iov); | |
1473 | cifs_small_buf_release(pSMB); | |
44c58186 | 1474 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1475 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1476 | if (rc) { |
f96637be | 1477 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1478 | } else { |
1479 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1480 | data_length = data_length << 16; | |
1481 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1482 | *nbytes = data_length; | |
1483 | ||
1484 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1485 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1486 | || (data_length > count)) { |
f96637be | 1487 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1488 | data_length, count); |
1da177e4 LT |
1489 | rc = -EIO; |
1490 | *nbytes = 0; | |
1491 | } else { | |
ec637e3f | 1492 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1493 | le16_to_cpu(pSMBr->DataOffset); |
1494 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1495 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1496 | rc = -EFAULT; |
26f57364 | 1497 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1498 | if (*buf) |
50c2f753 | 1499 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1500 | } |
1501 | } | |
1da177e4 | 1502 | |
790fe579 | 1503 | if (*buf) { |
da502f7d | 1504 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1505 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1506 | /* return buffer to caller to free */ |
da502f7d | 1507 | *buf = rsp_iov.iov_base; |
790fe579 | 1508 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1509 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1510 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1511 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1512 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1513 | |
1514 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1515 | since file handle passed in no longer valid */ |
1516 | return rc; | |
1517 | } | |
1518 | ||
ec637e3f | 1519 | |
1da177e4 | 1520 | int |
6d5786a3 | 1521 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1522 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1523 | { |
1524 | int rc = -EACCES; | |
1525 | WRITE_REQ *pSMB = NULL; | |
1526 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1527 | int bytes_returned, wct; |
1da177e4 LT |
1528 | __u32 bytes_sent; |
1529 | __u16 byte_count; | |
fa2989f4 PS |
1530 | __u32 pid = io_parms->pid; |
1531 | __u16 netfid = io_parms->netfid; | |
1532 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1533 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1534 | unsigned int count = io_parms->length; |
1da177e4 | 1535 | |
a24e2d7d SF |
1536 | *nbytes = 0; |
1537 | ||
f96637be | 1538 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1539 | if (tcon->ses == NULL) |
1c955187 SF |
1540 | return -ECONNABORTED; |
1541 | ||
790fe579 | 1542 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1543 | wct = 14; |
4c3130ef | 1544 | else { |
1c955187 | 1545 | wct = 12; |
4c3130ef SF |
1546 | if ((offset >> 32) > 0) { |
1547 | /* can not handle big offset for old srv */ | |
1548 | return -EIO; | |
1549 | } | |
1550 | } | |
1c955187 SF |
1551 | |
1552 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1553 | (void **) &pSMBr); |
1554 | if (rc) | |
1555 | return rc; | |
fa2989f4 PS |
1556 | |
1557 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1558 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1559 | ||
1da177e4 LT |
1560 | /* tcon and ses pointer are checked in smb_init */ |
1561 | if (tcon->ses->server == NULL) | |
1562 | return -ECONNABORTED; | |
1563 | ||
1564 | pSMB->AndXCommand = 0xFF; /* none */ | |
1565 | pSMB->Fid = netfid; | |
1566 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1567 | if (wct == 14) |
1c955187 | 1568 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1569 | |
1da177e4 LT |
1570 | pSMB->Reserved = 0xFFFFFFFF; |
1571 | pSMB->WriteMode = 0; | |
1572 | pSMB->Remaining = 0; | |
1573 | ||
50c2f753 | 1574 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1575 | can send more if LARGE_WRITE_X capability returned by the server and if |
1576 | our buffer is big enough or if we convert to iovecs on socket writes | |
1577 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1578 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1579 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1580 | } else { | |
1581 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1582 | & ~0xFF; | |
1583 | } | |
1584 | ||
1585 | if (bytes_sent > count) | |
1586 | bytes_sent = count; | |
1587 | pSMB->DataOffset = | |
50c2f753 | 1588 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1589 | if (buf) |
61e74801 | 1590 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1591 | else if (count != 0) { |
1da177e4 LT |
1592 | /* No buffer */ |
1593 | cifs_buf_release(pSMB); | |
1594 | return -EINVAL; | |
e30dcf3a | 1595 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1596 | if (wct == 14) |
e30dcf3a | 1597 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1598 | else /* wct == 12 */ |
e30dcf3a | 1599 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1600 | |
1da177e4 LT |
1601 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1602 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1603 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1604 | |
790fe579 | 1605 | if (wct == 14) |
1c955187 | 1606 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1607 | else { /* old style write has byte count 4 bytes earlier |
1608 | so 4 bytes pad */ | |
1609 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1610 | (struct smb_com_writex_req *)pSMB; |
1611 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1612 | } | |
1da177e4 LT |
1613 | |
1614 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1615 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1616 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1617 | if (rc) { |
f96637be | 1618 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1619 | } else { |
1620 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1621 | *nbytes = (*nbytes) << 16; | |
1622 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1623 | |
1624 | /* | |
1625 | * Mask off high 16 bits when bytes written as returned by the | |
1626 | * server is greater than bytes requested by the client. Some | |
1627 | * OS/2 servers are known to set incorrect CountHigh values. | |
1628 | */ | |
1629 | if (*nbytes > count) | |
1630 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1631 | } |
1632 | ||
1633 | cifs_buf_release(pSMB); | |
1634 | ||
50c2f753 | 1635 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1636 | since file handle passed in no longer valid */ |
1637 | ||
1638 | return rc; | |
1639 | } | |
1640 | ||
c28c89fc | 1641 | /* |
7c9421e1 | 1642 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1643 | * workqueue completion task. |
1644 | */ | |
1645 | static void | |
1646 | cifs_writev_callback(struct mid_q_entry *mid) | |
1647 | { | |
1648 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1649 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1650 | unsigned int written; |
1651 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
34f4deb7 | 1652 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
c28c89fc | 1653 | |
7c9421e1 | 1654 | switch (mid->mid_state) { |
c28c89fc JL |
1655 | case MID_RESPONSE_RECEIVED: |
1656 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1657 | if (wdata->result != 0) | |
1658 | break; | |
1659 | ||
1660 | written = le16_to_cpu(smb->CountHigh); | |
1661 | written <<= 16; | |
1662 | written += le16_to_cpu(smb->Count); | |
1663 | /* | |
1664 | * Mask off high 16 bits when bytes written as returned | |
1665 | * by the server is greater than bytes requested by the | |
1666 | * client. OS/2 servers are known to set incorrect | |
1667 | * CountHigh values. | |
1668 | */ | |
1669 | if (written > wdata->bytes) | |
1670 | written &= 0xFFFF; | |
1671 | ||
1672 | if (written < wdata->bytes) | |
1673 | wdata->result = -ENOSPC; | |
1674 | else | |
1675 | wdata->bytes = written; | |
1676 | break; | |
1677 | case MID_REQUEST_SUBMITTED: | |
1678 | case MID_RETRY_NEEDED: | |
1679 | wdata->result = -EAGAIN; | |
1680 | break; | |
1681 | default: | |
1682 | wdata->result = -EIO; | |
1683 | break; | |
1684 | } | |
1685 | ||
da472fc8 | 1686 | queue_work(cifsiod_wq, &wdata->work); |
70f08f91 | 1687 | release_mid(mid); |
34f4deb7 | 1688 | add_credits(tcon->ses->server, &credits, 0); |
c28c89fc JL |
1689 | } |
1690 | ||
1691 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
1692 | int | |
4a5c80d7 SF |
1693 | cifs_async_writev(struct cifs_writedata *wdata, |
1694 | void (*release)(struct kref *kref)) | |
c28c89fc | 1695 | { |
eddb079d | 1696 | int rc = -EACCES; |
c28c89fc JL |
1697 | WRITE_REQ *smb = NULL; |
1698 | int wct; | |
96daf2b0 | 1699 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 1700 | struct kvec iov[2]; |
fec344e3 | 1701 | struct smb_rqst rqst = { }; |
c28c89fc JL |
1702 | |
1703 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
1704 | wct = 14; | |
1705 | } else { | |
1706 | wct = 12; | |
1707 | if (wdata->offset >> 32 > 0) { | |
1708 | /* can not handle big offset for old srv */ | |
1709 | return -EIO; | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
1714 | if (rc) | |
1715 | goto async_writev_out; | |
1716 | ||
fe5f5d2e JL |
1717 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
1718 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 1719 | |
c28c89fc | 1720 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 1721 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
1722 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
1723 | if (wct == 14) | |
1724 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
1725 | smb->Reserved = 0xFFFFFFFF; | |
1726 | smb->WriteMode = 0; | |
1727 | smb->Remaining = 0; | |
1728 | ||
1729 | smb->DataOffset = | |
1730 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1731 | ||
1732 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1733 | iov[0].iov_len = 4; |
1734 | iov[0].iov_base = smb; | |
1735 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
1736 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 1737 | |
738f9de5 PS |
1738 | rqst.rq_iov = iov; |
1739 | rqst.rq_nvec = 2; | |
eddb079d | 1740 | rqst.rq_pages = wdata->pages; |
6d3adb23 | 1741 | rqst.rq_offset = wdata->page_offset; |
eddb079d JL |
1742 | rqst.rq_npages = wdata->nr_pages; |
1743 | rqst.rq_pagesz = wdata->pagesz; | |
1744 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc | 1745 | |
f96637be JP |
1746 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
1747 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
1748 | |
1749 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
1750 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
1751 | ||
1752 | if (wct == 14) { | |
1753 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
1754 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
1755 | } else { | |
1756 | /* wct == 12 */ | |
1757 | struct smb_com_writex_req *smbw = | |
1758 | (struct smb_com_writex_req *)smb; | |
1759 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
1760 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 1761 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
1762 | } |
1763 | ||
1764 | kref_get(&wdata->refcount); | |
fec344e3 | 1765 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
3349c3a7 | 1766 | cifs_writev_callback, NULL, wdata, 0, NULL); |
c28c89fc JL |
1767 | |
1768 | if (rc == 0) | |
44c58186 | 1769 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 1770 | else |
4a5c80d7 | 1771 | kref_put(&wdata->refcount, release); |
c28c89fc | 1772 | |
c28c89fc JL |
1773 | async_writev_out: |
1774 | cifs_small_buf_release(smb); | |
c28c89fc JL |
1775 | return rc; |
1776 | } | |
1777 | ||
d6e04ae6 | 1778 | int |
6d5786a3 | 1779 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 1780 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 | 1781 | { |
136a5dc3 | 1782 | int rc; |
1da177e4 | 1783 | WRITE_REQ *pSMB = NULL; |
ec637e3f | 1784 | int wct; |
d6e04ae6 | 1785 | int smb_hdr_len; |
ec637e3f | 1786 | int resp_buf_type = 0; |
fa2989f4 PS |
1787 | __u32 pid = io_parms->pid; |
1788 | __u16 netfid = io_parms->netfid; | |
1789 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1790 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1791 | unsigned int count = io_parms->length; |
da502f7d | 1792 | struct kvec rsp_iov; |
1da177e4 | 1793 | |
fbec9ab9 JL |
1794 | *nbytes = 0; |
1795 | ||
f96637be | 1796 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 1797 | |
4c3130ef | 1798 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1799 | wct = 14; |
4c3130ef | 1800 | } else { |
8cc64c6e | 1801 | wct = 12; |
4c3130ef SF |
1802 | if ((offset >> 32) > 0) { |
1803 | /* can not handle big offset for old srv */ | |
1804 | return -EIO; | |
1805 | } | |
1806 | } | |
8cc64c6e | 1807 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1808 | if (rc) |
1809 | return rc; | |
fa2989f4 PS |
1810 | |
1811 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1812 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1813 | ||
1da177e4 LT |
1814 | /* tcon and ses pointer are checked in smb_init */ |
1815 | if (tcon->ses->server == NULL) | |
1816 | return -ECONNABORTED; | |
1817 | ||
d6e04ae6 | 1818 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1819 | pSMB->Fid = netfid; |
1820 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1821 | if (wct == 14) |
8cc64c6e | 1822 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1823 | pSMB->Reserved = 0xFFFFFFFF; |
1824 | pSMB->WriteMode = 0; | |
1825 | pSMB->Remaining = 0; | |
d6e04ae6 | 1826 | |
1da177e4 | 1827 | pSMB->DataOffset = |
50c2f753 | 1828 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1829 | |
3e84469d SF |
1830 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1831 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1832 | /* header + 1 byte pad */ |
1833 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1834 | if (wct == 14) |
be8e3b00 | 1835 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1836 | else /* wct == 12 */ |
be8e3b00 | 1837 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1838 | if (wct == 14) |
8cc64c6e SF |
1839 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1840 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1841 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1842 | (struct smb_com_writex_req *)pSMB; |
1843 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1844 | } | |
3e84469d | 1845 | iov[0].iov_base = pSMB; |
790fe579 | 1846 | if (wct == 14) |
ec637e3f SF |
1847 | iov[0].iov_len = smb_hdr_len + 4; |
1848 | else /* wct == 12 pad bigger by four bytes */ | |
1849 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1850 | |
da502f7d PS |
1851 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
1852 | &rsp_iov); | |
1853 | cifs_small_buf_release(pSMB); | |
44c58186 | 1854 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1855 | if (rc) { |
f96637be | 1856 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 1857 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1858 | /* presumably this can not happen, but best to be safe */ |
1859 | rc = -EIO; | |
d6e04ae6 | 1860 | } else { |
da502f7d | 1861 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
1862 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1863 | *nbytes = (*nbytes) << 16; | |
1864 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1865 | |
1866 | /* | |
1867 | * Mask off high 16 bits when bytes written as returned by the | |
1868 | * server is greater than bytes requested by the client. OS/2 | |
1869 | * servers are known to set incorrect CountHigh values. | |
1870 | */ | |
1871 | if (*nbytes > count) | |
1872 | *nbytes &= 0xFFFF; | |
50c2f753 | 1873 | } |
1da177e4 | 1874 | |
da502f7d | 1875 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 1876 | |
50c2f753 | 1877 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1878 | since file handle passed in no longer valid */ |
1879 | ||
1880 | return rc; | |
1881 | } | |
d6e04ae6 | 1882 | |
6d5786a3 PS |
1883 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
1884 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
1885 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
1886 | { | |
1887 | int rc = 0; | |
1888 | LOCK_REQ *pSMB = NULL; | |
1889 | struct kvec iov[2]; | |
da502f7d | 1890 | struct kvec rsp_iov; |
9ee305b7 PS |
1891 | int resp_buf_type; |
1892 | __u16 count; | |
1893 | ||
f96637be JP |
1894 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
1895 | num_lock, num_unlock); | |
9ee305b7 PS |
1896 | |
1897 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
1898 | if (rc) | |
1899 | return rc; | |
1900 | ||
1901 | pSMB->Timeout = 0; | |
1902 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
1903 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
1904 | pSMB->LockType = lock_type; | |
1905 | pSMB->AndXCommand = 0xFF; /* none */ | |
1906 | pSMB->Fid = netfid; /* netfid stays le */ | |
1907 | ||
1908 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1909 | inc_rfc1001_len(pSMB, count); | |
1910 | pSMB->ByteCount = cpu_to_le16(count); | |
1911 | ||
1912 | iov[0].iov_base = (char *)pSMB; | |
1913 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
1914 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1915 | iov[1].iov_base = (char *)buf; | |
1916 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1917 | ||
44c58186 | 1918 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
392e1c5d RS |
1919 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, |
1920 | CIFS_NO_RSP_BUF, &rsp_iov); | |
da502f7d | 1921 | cifs_small_buf_release(pSMB); |
9ee305b7 | 1922 | if (rc) |
f96637be | 1923 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
1924 | |
1925 | return rc; | |
1926 | } | |
d6e04ae6 | 1927 | |
1da177e4 | 1928 | int |
6d5786a3 | 1929 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 1930 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 1931 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
1932 | const __u32 numLock, const __u8 lockType, |
1933 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1934 | { |
1935 | int rc = 0; | |
1936 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1937 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 1938 | int bytes_returned; |
a891f0f8 | 1939 | int flags = 0; |
1da177e4 LT |
1940 | __u16 count; |
1941 | ||
f96637be JP |
1942 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
1943 | (int)waitFlag, numLock); | |
46810cbf SF |
1944 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1945 | ||
1da177e4 LT |
1946 | if (rc) |
1947 | return rc; | |
1948 | ||
790fe579 | 1949 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 | 1950 | /* no response expected */ |
392e1c5d | 1951 | flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP; |
1da177e4 | 1952 | pSMB->Timeout = 0; |
4b18f2a9 | 1953 | } else if (waitFlag) { |
a891f0f8 | 1954 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1955 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1956 | } else { | |
1957 | pSMB->Timeout = 0; | |
1958 | } | |
1959 | ||
1960 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1961 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1962 | pSMB->LockType = lockType; | |
12fed00d | 1963 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1964 | pSMB->AndXCommand = 0xFF; /* none */ |
1965 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1966 | ||
790fe579 | 1967 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 1968 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
1969 | /* BB where to store pid high? */ |
1970 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1971 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1972 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1973 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1974 | count = sizeof(LOCKING_ANDX_RANGE); | |
1975 | } else { | |
1976 | /* oplock break */ | |
1977 | count = 0; | |
1978 | } | |
be8e3b00 | 1979 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1980 | pSMB->ByteCount = cpu_to_le16(count); |
1981 | ||
da502f7d | 1982 | if (waitFlag) |
7ee1af76 | 1983 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 1984 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 1985 | else |
a891f0f8 | 1986 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 1987 | cifs_small_buf_release(pSMB); |
44c58186 | 1988 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 1989 | if (rc) |
f96637be | 1990 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 1991 | |
50c2f753 | 1992 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1993 | since file handle passed in no longer valid */ |
1994 | return rc; | |
1995 | } | |
1996 | ||
08547b03 | 1997 | int |
6d5786a3 | 1998 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
1999 | const __u16 smb_file_id, const __u32 netpid, |
2000 | const loff_t start_offset, const __u64 len, | |
2001 | struct file_lock *pLockData, const __u16 lock_type, | |
2002 | const bool waitFlag) | |
08547b03 SF |
2003 | { |
2004 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2005 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2006 | struct cifs_posix_lock *parm_data; |
2007 | int rc = 0; | |
3a5ff61c | 2008 | int timeout = 0; |
08547b03 | 2009 | int bytes_returned = 0; |
133672ef | 2010 | int resp_buf_type = 0; |
08547b03 | 2011 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2012 | struct kvec iov[1]; |
da502f7d | 2013 | struct kvec rsp_iov; |
08547b03 | 2014 | |
f96637be | 2015 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2016 | |
08547b03 SF |
2017 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2018 | ||
2019 | if (rc) | |
2020 | return rc; | |
2021 | ||
2022 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2023 | ||
50c2f753 | 2024 | params = 6; |
08547b03 SF |
2025 | pSMB->MaxSetupCount = 0; |
2026 | pSMB->Reserved = 0; | |
2027 | pSMB->Flags = 0; | |
08547b03 SF |
2028 | pSMB->Reserved2 = 0; |
2029 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2030 | offset = param_offset + params; | |
2031 | ||
08547b03 SF |
2032 | count = sizeof(struct cifs_posix_lock); |
2033 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2034 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2035 | pSMB->SetupCount = 1; |
2036 | pSMB->Reserved3 = 0; | |
c5fd363d | 2037 | if (pLockData) |
08547b03 SF |
2038 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2039 | else | |
2040 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2041 | byte_count = 3 /* pad */ + params + count; | |
2042 | pSMB->DataCount = cpu_to_le16(count); | |
2043 | pSMB->ParameterCount = cpu_to_le16(params); | |
2044 | pSMB->TotalDataCount = pSMB->DataCount; | |
2045 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2046 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
d4dc277c | 2047 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
50c2f753 | 2048 | parm_data = (struct cifs_posix_lock *) |
d4dc277c | 2049 | (((char *)pSMB) + offset + 4); |
08547b03 SF |
2050 | |
2051 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2052 | if (waitFlag) { |
133672ef | 2053 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2054 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2055 | pSMB->Timeout = cpu_to_le32(-1); |
2056 | } else | |
2057 | pSMB->Timeout = 0; | |
2058 | ||
4f6bcec9 | 2059 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2060 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2061 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2062 | |
2063 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2064 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2065 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2066 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2067 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2068 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2069 | if (waitFlag) { |
2070 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2071 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2072 | } else { | |
133672ef | 2073 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2074 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2075 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2076 | &resp_buf_type, timeout, &rsp_iov); |
2077 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2078 | } |
da502f7d | 2079 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2080 | |
08547b03 | 2081 | if (rc) { |
f96637be | 2082 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2083 | } else if (pLockData) { |
fc94cdb9 SF |
2084 | /* lock structure can be returned on get */ |
2085 | __u16 data_offset; | |
2086 | __u16 data_count; | |
2087 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2088 | ||
820a803f | 2089 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2090 | rc = -EIO; /* bad smb */ |
2091 | goto plk_err_exit; | |
2092 | } | |
fc94cdb9 SF |
2093 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2094 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2095 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2096 | rc = -EIO; |
2097 | goto plk_err_exit; | |
2098 | } | |
2099 | parm_data = (struct cifs_posix_lock *) | |
2100 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2101 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2102 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2103 | else { |
2104 | if (parm_data->lock_type == | |
bc09d141 | 2105 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2106 | pLockData->fl_type = F_RDLCK; |
2107 | else if (parm_data->lock_type == | |
bc09d141 | 2108 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2109 | pLockData->fl_type = F_WRLCK; |
2110 | ||
5443d130 SF |
2111 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2112 | pLockData->fl_end = pLockData->fl_start + | |
d80c6984 PA |
2113 | (le64_to_cpu(parm_data->length) ? |
2114 | le64_to_cpu(parm_data->length) - 1 : 0); | |
9d5b86ac | 2115 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2116 | } |
08547b03 | 2117 | } |
50c2f753 | 2118 | |
fc94cdb9 | 2119 | plk_err_exit: |
da502f7d | 2120 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2121 | |
08547b03 SF |
2122 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2123 | since file handle passed in no longer valid */ | |
2124 | ||
2125 | return rc; | |
2126 | } | |
2127 | ||
2128 | ||
1da177e4 | 2129 | int |
6d5786a3 | 2130 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2131 | { |
2132 | int rc = 0; | |
2133 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2134 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2135 | |
2136 | /* do not retry on dead session on close */ | |
2137 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2138 | if (rc == -EAGAIN) |
1da177e4 LT |
2139 | return 0; |
2140 | if (rc) | |
2141 | return rc; | |
2142 | ||
1da177e4 | 2143 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2144 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2145 | pSMB->ByteCount = 0; |
792af7b0 | 2146 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2147 | cifs_small_buf_release(pSMB); |
44c58186 | 2148 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2149 | if (rc) { |
790fe579 | 2150 | if (rc != -EINTR) { |
1da177e4 | 2151 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2152 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2153 | } |
2154 | } | |
2155 | ||
1da177e4 | 2156 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2157 | if (rc == -EAGAIN) |
1da177e4 LT |
2158 | rc = 0; |
2159 | ||
2160 | return rc; | |
2161 | } | |
2162 | ||
b298f223 | 2163 | int |
6d5786a3 | 2164 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2165 | { |
2166 | int rc = 0; | |
2167 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2168 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2169 | |
2170 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2171 | if (rc) | |
2172 | return rc; | |
2173 | ||
2174 | pSMB->FileID = (__u16) smb_file_id; | |
2175 | pSMB->ByteCount = 0; | |
792af7b0 | 2176 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2177 | cifs_small_buf_release(pSMB); |
44c58186 | 2178 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2179 | if (rc) |
f96637be | 2180 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2181 | |
2182 | return rc; | |
2183 | } | |
2184 | ||
1da177e4 | 2185 | int |
6d5786a3 | 2186 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2187 | const char *from_name, const char *to_name, |
2188 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2189 | { |
2190 | int rc = 0; | |
2191 | RENAME_REQ *pSMB = NULL; | |
2192 | RENAME_RSP *pSMBr = NULL; | |
2193 | int bytes_returned; | |
2194 | int name_len, name_len2; | |
2195 | __u16 count; | |
2baa2682 | 2196 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2197 | |
f96637be | 2198 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2199 | renameRetry: |
2200 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2201 | (void **) &pSMBr); | |
2202 | if (rc) | |
2203 | return rc; | |
2204 | ||
2205 | pSMB->BufferFormat = 0x04; | |
2206 | pSMB->SearchAttributes = | |
2207 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2208 | ATTR_DIRECTORY); | |
2209 | ||
2210 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2211 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2212 | from_name, PATH_MAX, | |
2213 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2214 | name_len++; /* trailing null */ |
2215 | name_len *= 2; | |
2216 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2217 | /* protocol requires ASCII signature byte on Unicode string */ | |
2218 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2219 | name_len2 = | |
acbbb76a | 2220 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2221 | to_name, PATH_MAX, cifs_sb->local_nls, |
2222 | remap); | |
1da177e4 LT |
2223 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2224 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2225 | } else { |
2226 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
2227 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); | |
1da177e4 | 2228 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
1da177e4 LT |
2229 | name_len2++; /* signature byte */ |
2230 | } | |
2231 | ||
2232 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2233 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2234 | pSMB->ByteCount = cpu_to_le16(count); |
2235 | ||
2236 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2237 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2238 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2239 | if (rc) |
f96637be | 2240 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2241 | |
1da177e4 LT |
2242 | cifs_buf_release(pSMB); |
2243 | ||
2244 | if (rc == -EAGAIN) | |
2245 | goto renameRetry; | |
2246 | ||
2247 | return rc; | |
2248 | } | |
2249 | ||
6d5786a3 | 2250 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2251 | int netfid, const char *target_name, |
50c2f753 | 2252 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2253 | { |
2254 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2255 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2256 | struct set_file_rename *rename_info; |
1da177e4 LT |
2257 | char *data_offset; |
2258 | char dummy_string[30]; | |
2259 | int rc = 0; | |
2260 | int bytes_returned = 0; | |
2261 | int len_of_str; | |
2262 | __u16 params, param_offset, offset, count, byte_count; | |
2263 | ||
f96637be | 2264 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2265 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2266 | (void **) &pSMBr); | |
2267 | if (rc) | |
2268 | return rc; | |
2269 | ||
2270 | params = 6; | |
2271 | pSMB->MaxSetupCount = 0; | |
2272 | pSMB->Reserved = 0; | |
2273 | pSMB->Flags = 0; | |
2274 | pSMB->Timeout = 0; | |
2275 | pSMB->Reserved2 = 0; | |
2276 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2277 | offset = param_offset + params; | |
2278 | ||
f371793d SF |
2279 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2280 | data_offset = (char *)(pSMB) + offset + 4; | |
1da177e4 LT |
2281 | rename_info = (struct set_file_rename *) data_offset; |
2282 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2283 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2284 | pSMB->SetupCount = 1; |
2285 | pSMB->Reserved3 = 0; | |
2286 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2287 | byte_count = 3 /* pad */ + params; | |
2288 | pSMB->ParameterCount = cpu_to_le16(params); | |
2289 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2290 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2291 | pSMB->DataOffset = cpu_to_le16(offset); | |
2292 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2293 | rename_info->overwrite = cpu_to_le32(1); | |
2294 | rename_info->root_fid = 0; | |
2295 | /* unicode only call */ | |
790fe579 | 2296 | if (target_name == NULL) { |
50c2f753 | 2297 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2298 | len_of_str = |
2299 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2300 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2301 | } else { |
acbbb76a SF |
2302 | len_of_str = |
2303 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2304 | target_name, PATH_MAX, nls_codepage, |
2305 | remap); | |
1da177e4 LT |
2306 | } |
2307 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
d7173623 | 2308 | count = sizeof(struct set_file_rename) + (2 * len_of_str); |
1da177e4 LT |
2309 | byte_count += count; |
2310 | pSMB->DataCount = cpu_to_le16(count); | |
2311 | pSMB->TotalDataCount = pSMB->DataCount; | |
2312 | pSMB->Fid = netfid; | |
2313 | pSMB->InformationLevel = | |
2314 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2315 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2316 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2317 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2318 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2319 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2320 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2321 | if (rc) |
f96637be JP |
2322 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2323 | rc); | |
a5a2b489 | 2324 | |
1da177e4 LT |
2325 | cifs_buf_release(pSMB); |
2326 | ||
2327 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2328 | since file handle passed in no longer valid */ | |
2329 | ||
2330 | return rc; | |
2331 | } | |
2332 | ||
2333 | int | |
6d5786a3 PS |
2334 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2335 | const char *fromName, const __u16 target_tid, const char *toName, | |
2336 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2337 | { |
2338 | int rc = 0; | |
2339 | COPY_REQ *pSMB = NULL; | |
2340 | COPY_RSP *pSMBr = NULL; | |
2341 | int bytes_returned; | |
2342 | int name_len, name_len2; | |
2343 | __u16 count; | |
2344 | ||
f96637be | 2345 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2346 | copyRetry: |
2347 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2348 | (void **) &pSMBr); | |
2349 | if (rc) | |
2350 | return rc; | |
2351 | ||
2352 | pSMB->BufferFormat = 0x04; | |
2353 | pSMB->Tid2 = target_tid; | |
2354 | ||
2355 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2356 | ||
2357 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2358 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2359 | fromName, PATH_MAX, nls_codepage, | |
2360 | remap); | |
1da177e4 LT |
2361 | name_len++; /* trailing null */ |
2362 | name_len *= 2; | |
2363 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2364 | /* protocol requires ASCII signature byte on Unicode string */ | |
2365 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2366 | name_len2 = |
acbbb76a SF |
2367 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2368 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2369 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2370 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2371 | } else { |
2372 | name_len = copy_path_name(pSMB->OldFileName, fromName); | |
1da177e4 | 2373 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2374 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName); |
1da177e4 LT |
2375 | name_len2++; /* signature byte */ |
2376 | } | |
2377 | ||
2378 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2379 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2380 | pSMB->ByteCount = cpu_to_le16(count); |
2381 | ||
2382 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2383 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2384 | if (rc) { | |
f96637be JP |
2385 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2386 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2387 | } |
0d817bc0 | 2388 | cifs_buf_release(pSMB); |
1da177e4 LT |
2389 | |
2390 | if (rc == -EAGAIN) | |
2391 | goto copyRetry; | |
2392 | ||
2393 | return rc; | |
2394 | } | |
2395 | ||
2396 | int | |
6d5786a3 | 2397 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2398 | const char *fromName, const char *toName, |
bc8ebdc4 | 2399 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2400 | { |
2401 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2402 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2403 | char *data_offset; | |
2404 | int name_len; | |
2405 | int name_len_target; | |
2406 | int rc = 0; | |
2407 | int bytes_returned = 0; | |
2408 | __u16 params, param_offset, offset, byte_count; | |
2409 | ||
f96637be | 2410 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2411 | createSymLinkRetry: |
2412 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2413 | (void **) &pSMBr); | |
2414 | if (rc) | |
2415 | return rc; | |
2416 | ||
2417 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2418 | name_len = | |
bc8ebdc4 NA |
2419 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2420 | /* find define for this maxpathcomponent */ | |
2421 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2422 | name_len++; /* trailing null */ |
2423 | name_len *= 2; | |
2424 | ||
340625e6 RS |
2425 | } else { |
2426 | name_len = copy_path_name(pSMB->FileName, fromName); | |
1da177e4 LT |
2427 | } |
2428 | params = 6 + name_len; | |
2429 | pSMB->MaxSetupCount = 0; | |
2430 | pSMB->Reserved = 0; | |
2431 | pSMB->Flags = 0; | |
2432 | pSMB->Timeout = 0; | |
2433 | pSMB->Reserved2 = 0; | |
2434 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2435 | InformationLevel) - 4; |
1da177e4 LT |
2436 | offset = param_offset + params; |
2437 | ||
ded2d99c SF |
2438 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2439 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2440 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2441 | name_len_target = | |
bc8ebdc4 NA |
2442 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2443 | /* find define for this maxpathcomponent */ | |
2444 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2445 | name_len_target++; /* trailing null */ |
2446 | name_len_target *= 2; | |
340625e6 RS |
2447 | } else { |
2448 | name_len_target = copy_path_name(data_offset, toName); | |
1da177e4 LT |
2449 | } |
2450 | ||
2451 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2452 | /* BB find exact max on data count below from sess */ | |
2453 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2454 | pSMB->SetupCount = 1; | |
2455 | pSMB->Reserved3 = 0; | |
2456 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2457 | byte_count = 3 /* pad */ + params + name_len_target; | |
2458 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2459 | pSMB->ParameterCount = cpu_to_le16(params); | |
2460 | pSMB->TotalDataCount = pSMB->DataCount; | |
2461 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2462 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2463 | pSMB->DataOffset = cpu_to_le16(offset); | |
2464 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2465 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2466 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2467 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2468 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2469 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2470 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2471 | if (rc) |
f96637be JP |
2472 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2473 | rc); | |
1da177e4 | 2474 | |
0d817bc0 | 2475 | cifs_buf_release(pSMB); |
1da177e4 LT |
2476 | |
2477 | if (rc == -EAGAIN) | |
2478 | goto createSymLinkRetry; | |
2479 | ||
2480 | return rc; | |
2481 | } | |
2482 | ||
2483 | int | |
6d5786a3 | 2484 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2485 | const char *fromName, const char *toName, |
737b758c | 2486 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2487 | { |
2488 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2489 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2490 | char *data_offset; | |
2491 | int name_len; | |
2492 | int name_len_target; | |
2493 | int rc = 0; | |
2494 | int bytes_returned = 0; | |
2495 | __u16 params, param_offset, offset, byte_count; | |
2496 | ||
f96637be | 2497 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2498 | createHardLinkRetry: |
2499 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2500 | (void **) &pSMBr); | |
2501 | if (rc) | |
2502 | return rc; | |
2503 | ||
2504 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2505 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2506 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2507 | name_len++; /* trailing null */ |
2508 | name_len *= 2; | |
2509 | ||
340625e6 RS |
2510 | } else { |
2511 | name_len = copy_path_name(pSMB->FileName, toName); | |
1da177e4 LT |
2512 | } |
2513 | params = 6 + name_len; | |
2514 | pSMB->MaxSetupCount = 0; | |
2515 | pSMB->Reserved = 0; | |
2516 | pSMB->Flags = 0; | |
2517 | pSMB->Timeout = 0; | |
2518 | pSMB->Reserved2 = 0; | |
2519 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2520 | InformationLevel) - 4; |
1da177e4 LT |
2521 | offset = param_offset + params; |
2522 | ||
819f916c SF |
2523 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2524 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2525 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2526 | name_len_target = | |
acbbb76a SF |
2527 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2528 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2529 | name_len_target++; /* trailing null */ |
2530 | name_len_target *= 2; | |
340625e6 RS |
2531 | } else { |
2532 | name_len_target = copy_path_name(data_offset, fromName); | |
1da177e4 LT |
2533 | } |
2534 | ||
2535 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2536 | /* BB find exact max on data count below from sess*/ | |
2537 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2538 | pSMB->SetupCount = 1; | |
2539 | pSMB->Reserved3 = 0; | |
2540 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2541 | byte_count = 3 /* pad */ + params + name_len_target; | |
2542 | pSMB->ParameterCount = cpu_to_le16(params); | |
2543 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2544 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2545 | pSMB->TotalDataCount = pSMB->DataCount; | |
2546 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2547 | pSMB->DataOffset = cpu_to_le16(offset); | |
2548 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2549 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2550 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2551 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2552 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2553 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2554 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2555 | if (rc) |
f96637be JP |
2556 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2557 | rc); | |
1da177e4 LT |
2558 | |
2559 | cifs_buf_release(pSMB); | |
2560 | if (rc == -EAGAIN) | |
2561 | goto createHardLinkRetry; | |
2562 | ||
2563 | return rc; | |
2564 | } | |
2565 | ||
2566 | int | |
6d5786a3 | 2567 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2568 | const char *from_name, const char *to_name, |
2569 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2570 | { |
2571 | int rc = 0; | |
2572 | NT_RENAME_REQ *pSMB = NULL; | |
2573 | RENAME_RSP *pSMBr = NULL; | |
2574 | int bytes_returned; | |
2575 | int name_len, name_len2; | |
2576 | __u16 count; | |
2baa2682 | 2577 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2578 | |
f96637be | 2579 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2580 | winCreateHardLinkRetry: |
2581 | ||
2582 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2583 | (void **) &pSMBr); | |
2584 | if (rc) | |
2585 | return rc; | |
2586 | ||
2587 | pSMB->SearchAttributes = | |
2588 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2589 | ATTR_DIRECTORY); | |
2590 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2591 | pSMB->ClusterCount = 0; | |
2592 | ||
2593 | pSMB->BufferFormat = 0x04; | |
2594 | ||
2595 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2596 | name_len = | |
d6e906f1 SF |
2597 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2598 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2599 | name_len++; /* trailing null */ |
2600 | name_len *= 2; | |
fcc7c09d JL |
2601 | |
2602 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2603 | pSMB->OldFileName[name_len] = 0x04; | |
2604 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2605 | name_len2 = |
acbbb76a | 2606 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2607 | to_name, PATH_MAX, cifs_sb->local_nls, |
2608 | remap); | |
1da177e4 LT |
2609 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2610 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2611 | } else { |
2612 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
1da177e4 | 2613 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2614 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
1da177e4 LT |
2615 | name_len2++; /* signature byte */ |
2616 | } | |
2617 | ||
2618 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2619 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2620 | pSMB->ByteCount = cpu_to_le16(count); |
2621 | ||
2622 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2623 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2624 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2625 | if (rc) |
f96637be | 2626 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 2627 | |
1da177e4 LT |
2628 | cifs_buf_release(pSMB); |
2629 | if (rc == -EAGAIN) | |
2630 | goto winCreateHardLinkRetry; | |
2631 | ||
2632 | return rc; | |
2633 | } | |
2634 | ||
2635 | int | |
6d5786a3 | 2636 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2637 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 2638 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2639 | { |
2640 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2641 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2642 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2643 | int rc = 0; | |
2644 | int bytes_returned; | |
2645 | int name_len; | |
2646 | __u16 params, byte_count; | |
460b9696 | 2647 | char *data_start; |
1da177e4 | 2648 | |
f96637be | 2649 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
2650 | |
2651 | querySymLinkRetry: | |
2652 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2653 | (void **) &pSMBr); | |
2654 | if (rc) | |
2655 | return rc; | |
2656 | ||
2657 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2658 | name_len = | |
bc8ebdc4 NA |
2659 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
2660 | searchName, PATH_MAX, nls_codepage, | |
2661 | remap); | |
1da177e4 LT |
2662 | name_len++; /* trailing null */ |
2663 | name_len *= 2; | |
340625e6 RS |
2664 | } else { |
2665 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
2666 | } |
2667 | ||
2668 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2669 | pSMB->TotalDataCount = 0; | |
2670 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2671 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2672 | pSMB->MaxSetupCount = 0; |
2673 | pSMB->Reserved = 0; | |
2674 | pSMB->Flags = 0; | |
2675 | pSMB->Timeout = 0; | |
2676 | pSMB->Reserved2 = 0; | |
2677 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2678 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2679 | pSMB->DataCount = 0; |
2680 | pSMB->DataOffset = 0; | |
2681 | pSMB->SetupCount = 1; | |
2682 | pSMB->Reserved3 = 0; | |
2683 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2684 | byte_count = params + 1 /* pad */ ; | |
2685 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2686 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2687 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2688 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2689 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2690 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2691 | ||
2692 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2693 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2694 | if (rc) { | |
f96637be | 2695 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
2696 | } else { |
2697 | /* decode response */ | |
2698 | ||
2699 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2700 | /* BB also check enough total bytes returned */ |
820a803f | 2701 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2702 | rc = -EIO; |
1da177e4 | 2703 | else { |
0e0d2cf3 | 2704 | bool is_unicode; |
460b9696 JL |
2705 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2706 | ||
2707 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2708 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2709 | |
0e0d2cf3 SF |
2710 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2711 | is_unicode = true; | |
2712 | else | |
2713 | is_unicode = false; | |
2714 | ||
737b758c | 2715 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
2716 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
2717 | count, is_unicode, nls_codepage); | |
8b6427a2 | 2718 | if (!*symlinkinfo) |
460b9696 | 2719 | rc = -ENOMEM; |
1da177e4 LT |
2720 | } |
2721 | } | |
2722 | cifs_buf_release(pSMB); | |
2723 | if (rc == -EAGAIN) | |
2724 | goto querySymLinkRetry; | |
2725 | return rc; | |
2726 | } | |
2727 | ||
c52a9554 SF |
2728 | /* |
2729 | * Recent Windows versions now create symlinks more frequently | |
2730 | * and they use the "reparse point" mechanism below. We can of course | |
2731 | * do symlinks nicely to Samba and other servers which support the | |
2732 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2733 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2734 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2735 | * In the interim this code has been moved to its own config option so | |
2736 | * it is not compiled in by default until callers fixed up and more tested. | |
2737 | */ | |
1da177e4 | 2738 | int |
d244bf2d PS |
2739 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
2740 | __u16 fid, char **symlinkinfo, | |
2741 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
2742 | { |
2743 | int rc = 0; | |
2744 | int bytes_returned; | |
50c2f753 SF |
2745 | struct smb_com_transaction_ioctl_req *pSMB; |
2746 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
2747 | bool is_unicode; |
2748 | unsigned int sub_len; | |
2749 | char *sub_start; | |
c31f3307 SF |
2750 | struct reparse_symlink_data *reparse_buf; |
2751 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
2752 | __u32 data_offset, data_count; |
2753 | char *end_of_smb; | |
2754 | ||
2755 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
2756 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2757 | (void **) &pSMBr); | |
2758 | if (rc) | |
2759 | return rc; | |
2760 | ||
2761 | pSMB->TotalParameterCount = 0 ; | |
2762 | pSMB->TotalDataCount = 0; | |
2763 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2764 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 2765 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
2766 | pSMB->MaxSetupCount = 4; |
2767 | pSMB->Reserved = 0; | |
2768 | pSMB->ParameterOffset = 0; | |
2769 | pSMB->DataCount = 0; | |
2770 | pSMB->DataOffset = 0; | |
2771 | pSMB->SetupCount = 4; | |
2772 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2773 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2774 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2775 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2776 | pSMB->IsRootFlag = 0; | |
2777 | pSMB->Fid = fid; /* file handle always le */ | |
2778 | pSMB->ByteCount = 0; | |
2779 | ||
2780 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2781 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2782 | if (rc) { | |
f96637be | 2783 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
2784 | goto qreparse_out; |
2785 | } | |
2786 | ||
2787 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2788 | data_count = le32_to_cpu(pSMBr->DataCount); | |
2789 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
2790 | /* BB also check enough total bytes returned */ | |
2791 | rc = -EIO; /* bad smb */ | |
2792 | goto qreparse_out; | |
2793 | } | |
2794 | if (!data_count || (data_count > 2048)) { | |
2795 | rc = -EIO; | |
2796 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
2797 | goto qreparse_out; | |
2798 | } | |
2799 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 2800 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
2801 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
2802 | if ((char *)reparse_buf >= end_of_smb) { | |
2803 | rc = -EIO; | |
2804 | goto qreparse_out; | |
1da177e4 | 2805 | } |
c31f3307 SF |
2806 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
2807 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
2808 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
2809 | ||
2810 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
2811 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
2812 | le64_to_cpu(posix_buf->InodeType)); | |
2813 | rc = -EOPNOTSUPP; | |
2814 | goto qreparse_out; | |
2815 | } | |
2816 | is_unicode = true; | |
2817 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
2818 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
2819 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
2820 | rc = -EIO; | |
2821 | goto qreparse_out; | |
2822 | } | |
2823 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
2824 | sub_len, is_unicode, nls_codepage); | |
2825 | goto qreparse_out; | |
2826 | } else if (reparse_buf->ReparseTag != | |
2827 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
2828 | rc = -EOPNOTSUPP; | |
2829 | goto qreparse_out; | |
2830 | } | |
2831 | ||
2832 | /* Reparse tag is NTFS symlink */ | |
2833 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
2834 | reparse_buf->PathBuffer; | |
2835 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
2836 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
2837 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
2838 | rc = -EIO; | |
2839 | goto qreparse_out; | |
2840 | } | |
d244bf2d PS |
2841 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2842 | is_unicode = true; | |
2843 | else | |
2844 | is_unicode = false; | |
989c7e51 | 2845 | |
d244bf2d PS |
2846 | /* BB FIXME investigate remapping reserved chars here */ |
2847 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
2848 | nls_codepage); | |
2849 | if (!*symlinkinfo) | |
2850 | rc = -ENOMEM; | |
1da177e4 | 2851 | qreparse_out: |
4a6d87f1 | 2852 | cifs_buf_release(pSMB); |
1da177e4 | 2853 | |
d244bf2d PS |
2854 | /* |
2855 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2856 | * since file handle passed in no longer valid. | |
2857 | */ | |
1da177e4 LT |
2858 | return rc; |
2859 | } | |
2860 | ||
c7f508a9 SF |
2861 | int |
2862 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
2863 | __u16 fid) | |
2864 | { | |
2865 | int rc = 0; | |
2866 | int bytes_returned; | |
2867 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
2868 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
2869 | ||
2870 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
2871 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2872 | (void **) &pSMBr); | |
2873 | if (rc) | |
2874 | return rc; | |
2875 | ||
2876 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
2877 | ||
2878 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 2879 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
2880 | pSMB->MaxParameterCount = 0; |
2881 | pSMB->MaxDataCount = 0; | |
2882 | pSMB->MaxSetupCount = 4; | |
2883 | pSMB->Reserved = 0; | |
2884 | pSMB->ParameterOffset = 0; | |
bc09d141 | 2885 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
2886 | pSMB->DataOffset = |
2887 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
2888 | compression_state) - 4); /* 84 */ | |
2889 | pSMB->SetupCount = 4; | |
bc09d141 | 2890 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 2891 | pSMB->ParameterCount = 0; |
bc09d141 | 2892 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
2893 | pSMB->IsFsctl = 1; /* FSCTL */ |
2894 | pSMB->IsRootFlag = 0; | |
2895 | pSMB->Fid = fid; /* file handle always le */ | |
2896 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 2897 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
2898 | inc_rfc1001_len(pSMB, 5); |
2899 | ||
2900 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2901 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2902 | if (rc) | |
2903 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
2904 | ||
2905 | cifs_buf_release(pSMB); | |
2906 | ||
2907 | /* | |
2908 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2909 | * since file handle passed in no longer valid. | |
2910 | */ | |
2911 | return rc; | |
2912 | } | |
2913 | ||
2914 | ||
1da177e4 LT |
2915 | #ifdef CONFIG_CIFS_POSIX |
2916 | ||
bd9684b0 CB |
2917 | #ifdef CONFIG_FS_POSIX_ACL |
2918 | /** | |
2919 | * cifs_init_posix_acl - convert ACL from cifs to POSIX ACL format | |
2920 | * @ace: POSIX ACL entry to store converted ACL into | |
2921 | * @cifs_ace: ACL in cifs format | |
2922 | * | |
2923 | * Convert an Access Control Entry from wire format to local POSIX xattr | |
2924 | * format. | |
2925 | * | |
2926 | * Note that the @cifs_uid member is used to store both {g,u}id_t. | |
2927 | */ | |
2928 | static void cifs_init_posix_acl(struct posix_acl_entry *ace, | |
2929 | struct cifs_posix_ace *cifs_ace) | |
2930 | { | |
2931 | /* u8 cifs fields do not need le conversion */ | |
2932 | ace->e_perm = cifs_ace->cifs_e_perm; | |
2933 | ace->e_tag = cifs_ace->cifs_e_tag; | |
2934 | ||
2935 | switch (ace->e_tag) { | |
2936 | case ACL_USER: | |
2937 | ace->e_uid = make_kuid(&init_user_ns, | |
2938 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2939 | break; | |
2940 | case ACL_GROUP: | |
2941 | ace->e_gid = make_kgid(&init_user_ns, | |
2942 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2943 | break; | |
2944 | } | |
2945 | return; | |
2946 | } | |
2947 | ||
2948 | /** | |
2949 | * cifs_to_posix_acl - copy cifs ACL format to POSIX ACL format | |
2950 | * @acl: ACLs returned in POSIX ACL format | |
2951 | * @src: ACLs in cifs format | |
2952 | * @acl_type: type of POSIX ACL requested | |
2953 | * @size_of_data_area: size of SMB we got | |
2954 | * | |
2955 | * This function converts ACLs from cifs format to POSIX ACL format. | |
2956 | * If @acl is NULL then the size of the buffer required to store POSIX ACLs in | |
2957 | * their uapi format is returned. | |
2958 | */ | |
2959 | static int cifs_to_posix_acl(struct posix_acl **acl, char *src, | |
2960 | const int acl_type, const int size_of_data_area) | |
2961 | { | |
2962 | int size = 0; | |
2963 | __u16 count; | |
2964 | struct cifs_posix_ace *pACE; | |
2965 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2966 | struct posix_acl *kacl = NULL; | |
2967 | struct posix_acl_entry *pa, *pe; | |
2968 | ||
2969 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2970 | return -EOPNOTSUPP; | |
2971 | ||
2972 | if (acl_type == ACL_TYPE_ACCESS) { | |
2973 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2974 | pACE = &cifs_acl->ace_array[0]; | |
2975 | size = sizeof(struct cifs_posix_acl); | |
2976 | size += sizeof(struct cifs_posix_ace) * count; | |
2977 | /* check if we would go beyond end of SMB */ | |
2978 | if (size_of_data_area < size) { | |
2979 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", | |
2980 | size_of_data_area, size); | |
2981 | return -EINVAL; | |
2982 | } | |
2983 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
2984 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2985 | size = sizeof(struct cifs_posix_acl); | |
2986 | size += sizeof(struct cifs_posix_ace) * count; | |
2987 | /* skip past access ACEs to get to default ACEs */ | |
2988 | pACE = &cifs_acl->ace_array[count]; | |
2989 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2990 | size += sizeof(struct cifs_posix_ace) * count; | |
2991 | /* check if we would go beyond end of SMB */ | |
2992 | if (size_of_data_area < size) | |
2993 | return -EINVAL; | |
2994 | } else { | |
2995 | /* illegal type */ | |
2996 | return -EINVAL; | |
2997 | } | |
2998 | ||
2999 | /* Allocate number of POSIX ACLs to store in VFS format. */ | |
3000 | kacl = posix_acl_alloc(count, GFP_NOFS); | |
3001 | if (!kacl) | |
3002 | return -ENOMEM; | |
3003 | ||
3004 | FOREACH_ACL_ENTRY(pa, kacl, pe) { | |
3005 | cifs_init_posix_acl(pa, pACE); | |
3006 | pACE++; | |
3007 | } | |
3008 | ||
3009 | *acl = kacl; | |
3010 | return 0; | |
3011 | } | |
3012 | ||
dc1af4c4 CB |
3013 | /** |
3014 | * cifs_init_ace - convert ACL entry from POSIX ACL to cifs format | |
3015 | * @cifs_ace: the cifs ACL entry to store into | |
3016 | * @local_ace: the POSIX ACL entry to convert | |
3017 | */ | |
3018 | static void cifs_init_ace(struct cifs_posix_ace *cifs_ace, | |
3019 | const struct posix_acl_entry *local_ace) | |
3020 | { | |
3021 | cifs_ace->cifs_e_perm = local_ace->e_perm; | |
3022 | cifs_ace->cifs_e_tag = local_ace->e_tag; | |
3023 | ||
3024 | switch (local_ace->e_tag) { | |
3025 | case ACL_USER: | |
3026 | cifs_ace->cifs_uid = | |
3027 | cpu_to_le64(from_kuid(&init_user_ns, local_ace->e_uid)); | |
3028 | break; | |
3029 | case ACL_GROUP: | |
3030 | cifs_ace->cifs_uid = | |
3031 | cpu_to_le64(from_kgid(&init_user_ns, local_ace->e_gid)); | |
3032 | break; | |
3033 | default: | |
3034 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
3035 | } | |
3036 | } | |
3037 | ||
3038 | /** | |
3039 | * posix_acl_to_cifs - convert ACLs from POSIX ACL to cifs format | |
3040 | * @parm_data: ACLs in cifs format to conver to | |
3041 | * @acl: ACLs in POSIX ACL format to convert from | |
3042 | * @acl_type: the type of POSIX ACLs stored in @acl | |
3043 | * | |
3044 | * Return: the number cifs ACL entries after conversion | |
3045 | */ | |
3046 | static __u16 posix_acl_to_cifs(char *parm_data, const struct posix_acl *acl, | |
3047 | const int acl_type) | |
3048 | { | |
3049 | __u16 rc = 0; | |
3050 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; | |
3051 | const struct posix_acl_entry *pa, *pe; | |
3052 | int count; | |
3053 | int i = 0; | |
3054 | ||
3055 | if ((acl == NULL) || (cifs_acl == NULL)) | |
3056 | return 0; | |
3057 | ||
3058 | count = acl->a_count; | |
3059 | cifs_dbg(FYI, "setting acl with %d entries\n", count); | |
3060 | ||
3061 | /* | |
3062 | * Note that the uapi POSIX ACL version is verified by the VFS and is | |
3063 | * independent of the cifs ACL version. Changing the POSIX ACL version | |
3064 | * is a uapi change and if it's changed we will pass down the POSIX ACL | |
3065 | * version in struct posix_acl from the VFS. For now there's really | |
3066 | * only one that all filesystems know how to deal with. | |
3067 | */ | |
3068 | cifs_acl->version = cpu_to_le16(1); | |
3069 | if (acl_type == ACL_TYPE_ACCESS) { | |
3070 | cifs_acl->access_entry_count = cpu_to_le16(count); | |
3071 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); | |
3072 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
3073 | cifs_acl->default_entry_count = cpu_to_le16(count); | |
3074 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); | |
3075 | } else { | |
3076 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); | |
3077 | return 0; | |
3078 | } | |
3079 | FOREACH_ACL_ENTRY(pa, acl, pe) { | |
3080 | cifs_init_ace(&cifs_acl->ace_array[i++], pa); | |
3081 | } | |
3082 | if (rc == 0) { | |
3083 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); | |
3084 | rc += sizeof(struct cifs_posix_acl); | |
3085 | /* BB add check to make sure ACL does not overflow SMB */ | |
3086 | } | |
3087 | return rc; | |
3088 | } | |
3089 | ||
bd9684b0 CB |
3090 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, |
3091 | const unsigned char *searchName, struct posix_acl **acl, | |
3092 | const int acl_type, const struct nls_table *nls_codepage, | |
3093 | int remap) | |
3094 | { | |
3095 | /* SMB_QUERY_POSIX_ACL */ | |
3096 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3097 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3098 | int rc = 0; | |
3099 | int bytes_returned; | |
3100 | int name_len; | |
3101 | __u16 params, byte_count; | |
3102 | ||
3103 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); | |
3104 | ||
3105 | queryAclRetry: | |
3106 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3107 | (void **) &pSMBr); | |
3108 | if (rc) | |
3109 | return rc; | |
3110 | ||
3111 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3112 | name_len = | |
3113 | cifsConvertToUTF16((__le16 *) pSMB->FileName, | |
3114 | searchName, PATH_MAX, nls_codepage, | |
3115 | remap); | |
3116 | name_len++; /* trailing null */ | |
3117 | name_len *= 2; | |
3118 | pSMB->FileName[name_len] = 0; | |
3119 | pSMB->FileName[name_len+1] = 0; | |
3120 | } else { | |
3121 | name_len = copy_path_name(pSMB->FileName, searchName); | |
3122 | } | |
3123 | ||
3124 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3125 | pSMB->TotalDataCount = 0; | |
3126 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3127 | /* BB find exact max data count below from sess structure BB */ | |
3128 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3129 | pSMB->MaxSetupCount = 0; | |
3130 | pSMB->Reserved = 0; | |
3131 | pSMB->Flags = 0; | |
3132 | pSMB->Timeout = 0; | |
3133 | pSMB->Reserved2 = 0; | |
3134 | pSMB->ParameterOffset = cpu_to_le16( | |
3135 | offsetof(struct smb_com_transaction2_qpi_req, | |
3136 | InformationLevel) - 4); | |
3137 | pSMB->DataCount = 0; | |
3138 | pSMB->DataOffset = 0; | |
3139 | pSMB->SetupCount = 1; | |
3140 | pSMB->Reserved3 = 0; | |
3141 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3142 | byte_count = params + 1 /* pad */ ; | |
3143 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3144 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3145 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3146 | pSMB->Reserved4 = 0; | |
3147 | inc_rfc1001_len(pSMB, byte_count); | |
3148 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3149 | ||
3150 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3151 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3152 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); | |
3153 | if (rc) { | |
3154 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); | |
3155 | } else { | |
3156 | /* decode response */ | |
3157 | ||
3158 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3159 | /* BB also check enough total bytes returned */ | |
3160 | if (rc || get_bcc(&pSMBr->hdr) < 2) | |
3161 | rc = -EIO; /* bad smb */ | |
3162 | else { | |
3163 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3164 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3165 | rc = cifs_to_posix_acl(acl, | |
3166 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
3167 | acl_type, count); | |
3168 | } | |
3169 | } | |
3170 | cifs_buf_release(pSMB); | |
3171 | /* | |
3172 | * The else branch after SendReceive() doesn't return EAGAIN so if we | |
3173 | * allocated @acl in cifs_to_posix_acl() we are guaranteed to return | |
3174 | * here and don't leak POSIX ACLs. | |
3175 | */ | |
3176 | if (rc == -EAGAIN) | |
3177 | goto queryAclRetry; | |
3178 | return rc; | |
3179 | } | |
dc1af4c4 CB |
3180 | |
3181 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3182 | const unsigned char *fileName, const struct posix_acl *acl, | |
3183 | const int acl_type, const struct nls_table *nls_codepage, | |
3184 | int remap) | |
3185 | { | |
3186 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3187 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3188 | char *parm_data; | |
3189 | int name_len; | |
3190 | int rc = 0; | |
3191 | int bytes_returned = 0; | |
3192 | __u16 params, byte_count, data_count, param_offset, offset; | |
3193 | ||
3194 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); | |
3195 | setAclRetry: | |
3196 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3197 | (void **) &pSMBr); | |
3198 | if (rc) | |
3199 | return rc; | |
3200 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3201 | name_len = | |
3202 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, | |
3203 | PATH_MAX, nls_codepage, remap); | |
3204 | name_len++; /* trailing null */ | |
3205 | name_len *= 2; | |
3206 | } else { | |
3207 | name_len = copy_path_name(pSMB->FileName, fileName); | |
3208 | } | |
3209 | params = 6 + name_len; | |
3210 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3211 | /* BB find max SMB size from sess */ | |
3212 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3213 | pSMB->MaxSetupCount = 0; | |
3214 | pSMB->Reserved = 0; | |
3215 | pSMB->Flags = 0; | |
3216 | pSMB->Timeout = 0; | |
3217 | pSMB->Reserved2 = 0; | |
3218 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
3219 | InformationLevel) - 4; | |
3220 | offset = param_offset + params; | |
3221 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3222 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3223 | ||
3224 | /* convert to on the wire format for POSIX ACL */ | |
3225 | data_count = posix_acl_to_cifs(parm_data, acl, acl_type); | |
3226 | ||
3227 | if (data_count == 0) { | |
3228 | rc = -EOPNOTSUPP; | |
3229 | goto setACLerrorExit; | |
3230 | } | |
3231 | pSMB->DataOffset = cpu_to_le16(offset); | |
3232 | pSMB->SetupCount = 1; | |
3233 | pSMB->Reserved3 = 0; | |
3234 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3235 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3236 | byte_count = 3 /* pad */ + params + data_count; | |
3237 | pSMB->DataCount = cpu_to_le16(data_count); | |
3238 | pSMB->TotalDataCount = pSMB->DataCount; | |
3239 | pSMB->ParameterCount = cpu_to_le16(params); | |
3240 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3241 | pSMB->Reserved4 = 0; | |
3242 | inc_rfc1001_len(pSMB, byte_count); | |
3243 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3244 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3245 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3246 | if (rc) | |
3247 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); | |
3248 | ||
3249 | setACLerrorExit: | |
3250 | cifs_buf_release(pSMB); | |
3251 | if (rc == -EAGAIN) | |
3252 | goto setAclRetry; | |
3253 | return rc; | |
3254 | } | |
bd9684b0 CB |
3255 | #else |
3256 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3257 | const unsigned char *searchName, struct posix_acl **acl, | |
3258 | const int acl_type, const struct nls_table *nls_codepage, | |
3259 | int remap) | |
3260 | { | |
3261 | return -EOPNOTSUPP; | |
3262 | } | |
dc1af4c4 CB |
3263 | |
3264 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3265 | const unsigned char *fileName, const struct posix_acl *acl, | |
3266 | const int acl_type, const struct nls_table *nls_codepage, | |
3267 | int remap) | |
3268 | { | |
3269 | return -EOPNOTSUPP; | |
3270 | } | |
bd9684b0 CB |
3271 | #endif /* CONFIG_FS_POSIX_ACL */ |
3272 | ||
f654bac2 | 3273 | int |
6d5786a3 | 3274 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3275 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3276 | { |
50c2f753 SF |
3277 | int rc = 0; |
3278 | struct smb_t2_qfi_req *pSMB = NULL; | |
3279 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3280 | int bytes_returned; | |
3281 | __u16 params, byte_count; | |
f654bac2 | 3282 | |
f96637be | 3283 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3284 | if (tcon == NULL) |
3285 | return -ENODEV; | |
f654bac2 SF |
3286 | |
3287 | GetExtAttrRetry: | |
790fe579 | 3288 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
fb157ed2 | 3289 | (void **) &pSMBr); |
790fe579 SF |
3290 | if (rc) |
3291 | return rc; | |
f654bac2 | 3292 | |
ad7a2926 | 3293 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3294 | pSMB->t2.TotalDataCount = 0; |
3295 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3296 | /* BB find exact max data count below from sess structure BB */ | |
3297 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3298 | pSMB->t2.MaxSetupCount = 0; | |
3299 | pSMB->t2.Reserved = 0; | |
3300 | pSMB->t2.Flags = 0; | |
3301 | pSMB->t2.Timeout = 0; | |
3302 | pSMB->t2.Reserved2 = 0; | |
3303 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3304 | Fid) - 4); | |
3305 | pSMB->t2.DataCount = 0; | |
3306 | pSMB->t2.DataOffset = 0; | |
3307 | pSMB->t2.SetupCount = 1; | |
3308 | pSMB->t2.Reserved3 = 0; | |
3309 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3310 | byte_count = params + 1 /* pad */ ; | |
3311 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3312 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3313 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3314 | pSMB->Pad = 0; | |
f654bac2 | 3315 | pSMB->Fid = netfid; |
be8e3b00 | 3316 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3317 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3318 | ||
3319 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3320 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3321 | if (rc) { | |
f96637be | 3322 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3323 | } else { |
3324 | /* decode response */ | |
3325 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3326 | /* BB also check enough total bytes returned */ |
820a803f | 3327 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3328 | /* If rc should we check for EOPNOSUPP and |
3329 | disable the srvino flag? or in caller? */ | |
3330 | rc = -EIO; /* bad smb */ | |
3331 | else { | |
3332 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3333 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3334 | struct file_chattr_info *pfinfo; | |
fb157ed2 | 3335 | |
790fe579 | 3336 | if (count != 16) { |
a0a3036b | 3337 | cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n"); |
790fe579 SF |
3338 | rc = -EIO; |
3339 | goto GetExtAttrOut; | |
3340 | } | |
3341 | pfinfo = (struct file_chattr_info *) | |
3342 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3343 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3344 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3345 | } |
3346 | } | |
f654bac2 | 3347 | GetExtAttrOut: |
790fe579 SF |
3348 | cifs_buf_release(pSMB); |
3349 | if (rc == -EAGAIN) | |
3350 | goto GetExtAttrRetry; | |
3351 | return rc; | |
f654bac2 SF |
3352 | } |
3353 | ||
f654bac2 | 3354 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3355 | |
79df1bae JL |
3356 | /* |
3357 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3358 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3359 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3360 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3361 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3362 | * by caller | |
3363 | */ | |
3364 | static int | |
3365 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3366 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3367 | void **ret_buf) |
3368 | { | |
3369 | int rc; | |
3370 | __u32 temp_offset; | |
3371 | struct smb_com_ntransact_req *pSMB; | |
3372 | ||
3373 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3374 | (void **)&pSMB); | |
3375 | if (rc) | |
3376 | return rc; | |
3377 | *ret_buf = (void *)pSMB; | |
3378 | pSMB->Reserved = 0; | |
3379 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3380 | pSMB->TotalDataCount = 0; | |
c974befa | 3381 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3382 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3383 | pSMB->DataCount = pSMB->TotalDataCount; | |
3384 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3385 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3386 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3387 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3388 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3389 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3390 | return 0; | |
3391 | } | |
3392 | ||
3393 | static int | |
3394 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3395 | __u32 *pparmlen, __u32 *pdatalen) | |
3396 | { | |
3397 | char *end_of_smb; | |
3398 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3399 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3400 | u16 bcc; |
79df1bae JL |
3401 | |
3402 | *pdatalen = 0; | |
3403 | *pparmlen = 0; | |
3404 | ||
3405 | if (buf == NULL) | |
3406 | return -EINVAL; | |
3407 | ||
3408 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3409 | ||
820a803f JL |
3410 | bcc = get_bcc(&pSMBr->hdr); |
3411 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3412 | (char *)&pSMBr->ByteCount; |
3413 | ||
3414 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3415 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3416 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3417 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3418 | ||
3419 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3420 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3421 | ||
3422 | /* should we also check that parm and data areas do not overlap? */ | |
3423 | if (*ppparm > end_of_smb) { | |
f96637be | 3424 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3425 | return -EINVAL; |
3426 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3427 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3428 | return -EINVAL; |
3429 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3430 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3431 | return -EINVAL; |
3432 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3433 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3434 | *ppdata, data_count, (data_count + *ppdata), | |
3435 | end_of_smb, pSMBr); | |
79df1bae | 3436 | return -EINVAL; |
820a803f | 3437 | } else if (parm_count + data_count > bcc) { |
f96637be | 3438 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3439 | return -EINVAL; |
3440 | } | |
3441 | *pdatalen = data_count; | |
3442 | *pparmlen = parm_count; | |
3443 | return 0; | |
3444 | } | |
3445 | ||
0a4b92c0 SF |
3446 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3447 | int | |
6d5786a3 | 3448 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3449 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3450 | { |
3451 | int rc = 0; | |
3452 | int buf_type = 0; | |
ad7a2926 | 3453 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3454 | struct kvec iov[1]; |
da502f7d | 3455 | struct kvec rsp_iov; |
0a4b92c0 | 3456 | |
f96637be | 3457 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3458 | |
630f3f0c SF |
3459 | *pbuflen = 0; |
3460 | *acl_inf = NULL; | |
3461 | ||
b9c7a2bb | 3462 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3463 | 8 /* parm len */, tcon, (void **) &pSMB); |
3464 | if (rc) | |
3465 | return rc; | |
3466 | ||
3467 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3468 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3469 | pSMB->MaxSetupCount = 0; | |
3470 | pSMB->Fid = fid; /* file handle always le */ | |
3471 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3472 | CIFS_ACL_DACL); | |
3473 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3474 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3475 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3476 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3477 | |
a761ac57 | 3478 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3479 | 0, &rsp_iov); |
3480 | cifs_small_buf_release(pSMB); | |
44c58186 | 3481 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3482 | if (rc) { |
f96637be | 3483 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3484 | } else { /* decode response */ |
ad7a2926 | 3485 | __le32 *parm; |
630f3f0c SF |
3486 | __u32 parm_len; |
3487 | __u32 acl_len; | |
50c2f753 | 3488 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3489 | char *pdata; |
0a4b92c0 SF |
3490 | |
3491 | /* validate_nttransact */ | |
da502f7d | 3492 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3493 | &pdata, &parm_len, pbuflen); |
790fe579 | 3494 | if (rc) |
0a4b92c0 | 3495 | goto qsec_out; |
da502f7d | 3496 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3497 | |
f96637be JP |
3498 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3499 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3500 | |
3501 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3502 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3503 | *pbuflen = 0; |
0a4b92c0 SF |
3504 | goto qsec_out; |
3505 | } | |
3506 | ||
3507 | /* BB check that data area is minimum length and as big as acl_len */ | |
3508 | ||
af6f4612 | 3509 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3510 | if (acl_len != *pbuflen) { |
f96637be JP |
3511 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3512 | acl_len, *pbuflen); | |
630f3f0c SF |
3513 | if (*pbuflen > acl_len) |
3514 | *pbuflen = acl_len; | |
3515 | } | |
0a4b92c0 | 3516 | |
630f3f0c SF |
3517 | /* check if buffer is big enough for the acl |
3518 | header followed by the smallest SID */ | |
3519 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3520 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3521 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3522 | rc = -EINVAL; |
3523 | *pbuflen = 0; | |
3524 | } else { | |
f7f7c185 | 3525 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3526 | if (*acl_inf == NULL) { |
3527 | *pbuflen = 0; | |
3528 | rc = -ENOMEM; | |
3529 | } | |
630f3f0c | 3530 | } |
0a4b92c0 SF |
3531 | } |
3532 | qsec_out: | |
da502f7d | 3533 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3534 | return rc; |
3535 | } | |
97837582 SF |
3536 | |
3537 | int | |
6d5786a3 | 3538 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3539 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3540 | { |
3541 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3542 | int rc = 0; | |
3543 | int bytes_returned = 0; | |
3544 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3545 | void *pSMBr; |
97837582 SF |
3546 | |
3547 | setCifsAclRetry: | |
b2a3ad9c | 3548 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3549 | if (rc) |
b2a3ad9c | 3550 | return rc; |
97837582 SF |
3551 | |
3552 | pSMB->MaxSetupCount = 0; | |
3553 | pSMB->Reserved = 0; | |
3554 | ||
3555 | param_count = 8; | |
3556 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3557 | data_count = acllen; | |
3558 | data_offset = param_offset + param_count; | |
3559 | byte_count = 3 /* pad */ + param_count; | |
3560 | ||
3561 | pSMB->DataCount = cpu_to_le32(data_count); | |
3562 | pSMB->TotalDataCount = pSMB->DataCount; | |
3563 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3564 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3565 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3566 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3567 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3568 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3569 | pSMB->SetupCount = 0; | |
3570 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3571 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3572 | ||
3573 | pSMB->Fid = fid; /* file handle always le */ | |
3574 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3575 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3576 | |
3577 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3578 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3579 | data_offset, pntsd, acllen); | |
be8e3b00 | 3580 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3581 | } else |
be8e3b00 | 3582 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3583 | |
3584 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3585 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3586 | ||
f96637be JP |
3587 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3588 | bytes_returned, rc); | |
97837582 | 3589 | if (rc) |
f96637be | 3590 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3591 | cifs_buf_release(pSMB); |
3592 | ||
3593 | if (rc == -EAGAIN) | |
3594 | goto setCifsAclRetry; | |
3595 | ||
3596 | return (rc); | |
3597 | } | |
3598 | ||
0a4b92c0 | 3599 | |
6b8edfe0 SF |
3600 | /* Legacy Query Path Information call for lookup to old servers such |
3601 | as Win9x/WinME */ | |
68889f26 PS |
3602 | int |
3603 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3604 | const char *search_name, FILE_ALL_INFO *data, | |
3605 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3606 | { |
ad7a2926 SF |
3607 | QUERY_INFORMATION_REQ *pSMB; |
3608 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3609 | int rc = 0; |
3610 | int bytes_returned; | |
3611 | int name_len; | |
3612 | ||
f96637be | 3613 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3614 | QInfRetry: |
3615 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3616 | (void **) &pSMBr); |
6b8edfe0 SF |
3617 | if (rc) |
3618 | return rc; | |
3619 | ||
3620 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3621 | name_len = | |
acbbb76a | 3622 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3623 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3624 | remap); |
6b8edfe0 SF |
3625 | name_len++; /* trailing null */ |
3626 | name_len *= 2; | |
50c2f753 | 3627 | } else { |
340625e6 | 3628 | name_len = copy_path_name(pSMB->FileName, search_name); |
6b8edfe0 SF |
3629 | } |
3630 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3631 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3632 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3633 | pSMB->ByteCount = cpu_to_le16(name_len); |
3634 | ||
3635 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3636 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3637 | if (rc) { |
f96637be | 3638 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3639 | } else if (data) { |
95390201 | 3640 | struct timespec64 ts; |
1bd5bbcb | 3641 | __u32 time = le32_to_cpu(pSMBr->last_write_time); |
ad7a2926 SF |
3642 | |
3643 | /* decode response */ | |
1bd5bbcb | 3644 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3645 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3646 | ts.tv_nsec = 0; |
3647 | ts.tv_sec = time; | |
3648 | /* decode time fields */ | |
68889f26 PS |
3649 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3650 | data->LastWriteTime = data->ChangeTime; | |
3651 | data->LastAccessTime = 0; | |
3652 | data->AllocationSize = | |
70ca734a | 3653 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3654 | data->EndOfFile = data->AllocationSize; |
3655 | data->Attributes = | |
70ca734a | 3656 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3657 | } else |
3658 | rc = -EIO; /* bad buffer passed in */ | |
3659 | ||
3660 | cifs_buf_release(pSMB); | |
3661 | ||
3662 | if (rc == -EAGAIN) | |
3663 | goto QInfRetry; | |
3664 | ||
3665 | return rc; | |
3666 | } | |
3667 | ||
bcd5357f | 3668 | int |
6d5786a3 | 3669 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3670 | u16 netfid, FILE_ALL_INFO *pFindData) |
3671 | { | |
3672 | struct smb_t2_qfi_req *pSMB = NULL; | |
3673 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3674 | int rc = 0; | |
3675 | int bytes_returned; | |
3676 | __u16 params, byte_count; | |
3677 | ||
3678 | QFileInfoRetry: | |
3679 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3680 | (void **) &pSMBr); | |
3681 | if (rc) | |
3682 | return rc; | |
3683 | ||
3684 | params = 2 /* level */ + 2 /* fid */; | |
3685 | pSMB->t2.TotalDataCount = 0; | |
3686 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3687 | /* BB find exact max data count below from sess structure BB */ | |
3688 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3689 | pSMB->t2.MaxSetupCount = 0; | |
3690 | pSMB->t2.Reserved = 0; | |
3691 | pSMB->t2.Flags = 0; | |
3692 | pSMB->t2.Timeout = 0; | |
3693 | pSMB->t2.Reserved2 = 0; | |
3694 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3695 | Fid) - 4); | |
3696 | pSMB->t2.DataCount = 0; | |
3697 | pSMB->t2.DataOffset = 0; | |
3698 | pSMB->t2.SetupCount = 1; | |
3699 | pSMB->t2.Reserved3 = 0; | |
3700 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3701 | byte_count = params + 1 /* pad */ ; | |
3702 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3703 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3704 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3705 | pSMB->Pad = 0; | |
3706 | pSMB->Fid = netfid; | |
be8e3b00 | 3707 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3708 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 3709 | |
bcd5357f JL |
3710 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3711 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3712 | if (rc) { | |
a0a3036b | 3713 | cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc); |
bcd5357f JL |
3714 | } else { /* decode response */ |
3715 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3716 | |
bcd5357f JL |
3717 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3718 | rc = -EIO; | |
820a803f | 3719 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3720 | rc = -EIO; /* bad smb */ |
3721 | else if (pFindData) { | |
3722 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3723 | memcpy((char *) pFindData, | |
3724 | (char *) &pSMBr->hdr.Protocol + | |
3725 | data_offset, sizeof(FILE_ALL_INFO)); | |
3726 | } else | |
3727 | rc = -ENOMEM; | |
3728 | } | |
3729 | cifs_buf_release(pSMB); | |
3730 | if (rc == -EAGAIN) | |
3731 | goto QFileInfoRetry; | |
6b8edfe0 | 3732 | |
bcd5357f JL |
3733 | return rc; |
3734 | } | |
6b8edfe0 | 3735 | |
1da177e4 | 3736 | int |
6d5786a3 | 3737 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 3738 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 3739 | int legacy /* old style infolevel */, |
737b758c | 3740 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 3741 | { |
68889f26 | 3742 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
3743 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
3744 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3745 | int rc = 0; | |
3746 | int bytes_returned; | |
3747 | int name_len; | |
3748 | __u16 params, byte_count; | |
3749 | ||
f96637be | 3750 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
3751 | QPathInfoRetry: |
3752 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3753 | (void **) &pSMBr); | |
3754 | if (rc) | |
3755 | return rc; | |
3756 | ||
3757 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3758 | name_len = | |
68889f26 | 3759 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 3760 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3761 | name_len++; /* trailing null */ |
3762 | name_len *= 2; | |
340625e6 RS |
3763 | } else { |
3764 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
3765 | } |
3766 | ||
50c2f753 | 3767 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3768 | pSMB->TotalDataCount = 0; |
3769 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3770 | /* BB find exact max SMB PDU from sess structure BB */ |
3771 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3772 | pSMB->MaxSetupCount = 0; |
3773 | pSMB->Reserved = 0; | |
3774 | pSMB->Flags = 0; | |
3775 | pSMB->Timeout = 0; | |
3776 | pSMB->Reserved2 = 0; | |
3777 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3778 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3779 | pSMB->DataCount = 0; |
3780 | pSMB->DataOffset = 0; | |
3781 | pSMB->SetupCount = 1; | |
3782 | pSMB->Reserved3 = 0; | |
3783 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3784 | byte_count = params + 1 /* pad */ ; | |
3785 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3786 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3787 | if (legacy) |
acf1a1b1 SF |
3788 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3789 | else | |
3790 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3791 | pSMB->Reserved4 = 0; |
be8e3b00 | 3792 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3793 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3794 | ||
3795 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3796 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3797 | if (rc) { | |
f96637be | 3798 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
3799 | } else { /* decode response */ |
3800 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3801 | ||
acf1a1b1 SF |
3802 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3803 | rc = -EIO; | |
820a803f | 3804 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3805 | rc = -EIO; /* bad smb */ |
820a803f | 3806 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3807 | rc = -EIO; /* 24 or 26 expected but we do not read |
3808 | last field */ | |
68889f26 | 3809 | else if (data) { |
acf1a1b1 | 3810 | int size; |
1da177e4 | 3811 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 3812 | |
68889f26 PS |
3813 | /* |
3814 | * On legacy responses we do not read the last field, | |
3815 | * EAsize, fortunately since it varies by subdialect and | |
3816 | * also note it differs on Set vs Get, ie two bytes or 4 | |
3817 | * bytes depending but we don't care here. | |
3818 | */ | |
ad7a2926 | 3819 | if (legacy) |
acf1a1b1 SF |
3820 | size = sizeof(FILE_INFO_STANDARD); |
3821 | else | |
3822 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 3823 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 3824 | data_offset, size); |
1da177e4 LT |
3825 | } else |
3826 | rc = -ENOMEM; | |
3827 | } | |
3828 | cifs_buf_release(pSMB); | |
3829 | if (rc == -EAGAIN) | |
3830 | goto QPathInfoRetry; | |
3831 | ||
3832 | return rc; | |
3833 | } | |
3834 | ||
c8634fd3 | 3835 | int |
6d5786a3 | 3836 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
3837 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
3838 | { | |
3839 | struct smb_t2_qfi_req *pSMB = NULL; | |
3840 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3841 | int rc = 0; | |
3842 | int bytes_returned; | |
3843 | __u16 params, byte_count; | |
3844 | ||
3845 | UnixQFileInfoRetry: | |
3846 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3847 | (void **) &pSMBr); | |
3848 | if (rc) | |
3849 | return rc; | |
3850 | ||
3851 | params = 2 /* level */ + 2 /* fid */; | |
3852 | pSMB->t2.TotalDataCount = 0; | |
3853 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3854 | /* BB find exact max data count below from sess structure BB */ | |
3855 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3856 | pSMB->t2.MaxSetupCount = 0; | |
3857 | pSMB->t2.Reserved = 0; | |
3858 | pSMB->t2.Flags = 0; | |
3859 | pSMB->t2.Timeout = 0; | |
3860 | pSMB->t2.Reserved2 = 0; | |
3861 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3862 | Fid) - 4); | |
3863 | pSMB->t2.DataCount = 0; | |
3864 | pSMB->t2.DataOffset = 0; | |
3865 | pSMB->t2.SetupCount = 1; | |
3866 | pSMB->t2.Reserved3 = 0; | |
3867 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3868 | byte_count = params + 1 /* pad */ ; | |
3869 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3870 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3871 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3872 | pSMB->Pad = 0; | |
3873 | pSMB->Fid = netfid; | |
be8e3b00 | 3874 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3875 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
3876 | |
3877 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3878 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3879 | if (rc) { | |
a0a3036b | 3880 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc); |
c8634fd3 JL |
3881 | } else { /* decode response */ |
3882 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3883 | ||
820a803f | 3884 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3885 | 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 |
3886 | rc = -EIO; /* bad smb */ |
3887 | } else { | |
3888 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3889 | memcpy((char *) pFindData, | |
3890 | (char *) &pSMBr->hdr.Protocol + | |
3891 | data_offset, | |
3892 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3893 | } | |
3894 | } | |
3895 | ||
3896 | cifs_buf_release(pSMB); | |
3897 | if (rc == -EAGAIN) | |
3898 | goto UnixQFileInfoRetry; | |
3899 | ||
3900 | return rc; | |
3901 | } | |
3902 | ||
1da177e4 | 3903 | int |
6d5786a3 | 3904 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3905 | const unsigned char *searchName, |
582d21e5 | 3906 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3907 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3908 | { |
3909 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3910 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3911 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3912 | int rc = 0; | |
3913 | int bytes_returned = 0; | |
3914 | int name_len; | |
3915 | __u16 params, byte_count; | |
3916 | ||
f96637be | 3917 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
3918 | UnixQPathInfoRetry: |
3919 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3920 | (void **) &pSMBr); | |
3921 | if (rc) | |
3922 | return rc; | |
3923 | ||
3924 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3925 | name_len = | |
acbbb76a SF |
3926 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
3927 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3928 | name_len++; /* trailing null */ |
3929 | name_len *= 2; | |
340625e6 RS |
3930 | } else { |
3931 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3932 | } |
3933 | ||
50c2f753 | 3934 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3935 | pSMB->TotalDataCount = 0; |
3936 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3937 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3938 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3939 | pSMB->MaxSetupCount = 0; |
3940 | pSMB->Reserved = 0; | |
3941 | pSMB->Flags = 0; | |
3942 | pSMB->Timeout = 0; | |
3943 | pSMB->Reserved2 = 0; | |
3944 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3945 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3946 | pSMB->DataCount = 0; |
3947 | pSMB->DataOffset = 0; | |
3948 | pSMB->SetupCount = 1; | |
3949 | pSMB->Reserved3 = 0; | |
3950 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3951 | byte_count = params + 1 /* pad */ ; | |
3952 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3953 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3954 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3955 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3956 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3957 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3958 | ||
3959 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3960 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3961 | if (rc) { | |
a0a3036b | 3962 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc); |
1da177e4 LT |
3963 | } else { /* decode response */ |
3964 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3965 | ||
820a803f | 3966 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3967 | 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 |
3968 | rc = -EIO; /* bad smb */ |
3969 | } else { | |
3970 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3971 | memcpy((char *) pFindData, | |
3972 | (char *) &pSMBr->hdr.Protocol + | |
3973 | data_offset, | |
630f3f0c | 3974 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3975 | } |
3976 | } | |
3977 | cifs_buf_release(pSMB); | |
3978 | if (rc == -EAGAIN) | |
3979 | goto UnixQPathInfoRetry; | |
3980 | ||
3981 | return rc; | |
3982 | } | |
3983 | ||
1da177e4 LT |
3984 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3985 | int | |
6d5786a3 | 3986 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 3987 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 3988 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 3989 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
3990 | { |
3991 | /* level 257 SMB_ */ | |
3992 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3993 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3994 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3995 | int rc = 0; |
3996 | int bytes_returned = 0; | |
c052e2b4 | 3997 | int name_len, remap; |
1da177e4 | 3998 | __u16 params, byte_count; |
c052e2b4 | 3999 | struct nls_table *nls_codepage; |
1da177e4 | 4000 | |
f96637be | 4001 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
4002 | |
4003 | findFirstRetry: | |
4004 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4005 | (void **) &pSMBr); | |
4006 | if (rc) | |
4007 | return rc; | |
4008 | ||
c052e2b4 | 4009 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4010 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4011 | |
1da177e4 LT |
4012 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4013 | name_len = | |
acbbb76a SF |
4014 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4015 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4016 | /* We can not add the asterik earlier in case |
4017 | it got remapped to 0xF03A as if it were part of the | |
4018 | directory name instead of a wildcard */ | |
1da177e4 | 4019 | name_len *= 2; |
c052e2b4 SP |
4020 | if (msearch) { |
4021 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4022 | pSMB->FileName[name_len+1] = 0; | |
4023 | pSMB->FileName[name_len+2] = '*'; | |
4024 | pSMB->FileName[name_len+3] = 0; | |
4025 | name_len += 4; /* now the trailing null */ | |
4026 | /* null terminate just in case */ | |
4027 | pSMB->FileName[name_len] = 0; | |
4028 | pSMB->FileName[name_len+1] = 0; | |
4029 | name_len += 2; | |
4030 | } | |
340625e6 RS |
4031 | } else { |
4032 | name_len = copy_path_name(pSMB->FileName, searchName); | |
c052e2b4 | 4033 | if (msearch) { |
340625e6 RS |
4034 | if (WARN_ON_ONCE(name_len > PATH_MAX-2)) |
4035 | name_len = PATH_MAX-2; | |
4036 | /* overwrite nul byte */ | |
4037 | pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb); | |
4038 | pSMB->FileName[name_len] = '*'; | |
4039 | pSMB->FileName[name_len+1] = 0; | |
4040 | name_len += 2; | |
c052e2b4 | 4041 | } |
1da177e4 LT |
4042 | } |
4043 | ||
4044 | params = 12 + name_len /* includes null */ ; | |
4045 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4046 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4047 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4048 | pSMB->MaxSetupCount = 0; |
4049 | pSMB->Reserved = 0; | |
4050 | pSMB->Flags = 0; | |
4051 | pSMB->Timeout = 0; | |
4052 | pSMB->Reserved2 = 0; | |
4053 | byte_count = params + 1 /* pad */ ; | |
4054 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4055 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4056 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4057 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4058 | - 4); | |
1da177e4 LT |
4059 | pSMB->DataCount = 0; |
4060 | pSMB->DataOffset = 0; | |
4061 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4062 | pSMB->Reserved3 = 0; | |
4063 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4064 | pSMB->SearchAttributes = | |
4065 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4066 | ATTR_DIRECTORY); | |
50c2f753 | 4067 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4068 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4069 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4070 | ||
4071 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4072 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4073 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4074 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4075 | ||
4076 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4077 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4078 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4079 | |
88274815 SF |
4080 | if (rc) {/* BB add logic to retry regular search if Unix search |
4081 | rejected unexpectedly by server */ | |
1da177e4 | 4082 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4083 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4084 | |
88274815 | 4085 | cifs_buf_release(pSMB); |
1da177e4 LT |
4086 | |
4087 | /* BB eventually could optimize out free and realloc of buf */ | |
4088 | /* for this case */ | |
4089 | if (rc == -EAGAIN) | |
4090 | goto findFirstRetry; | |
4091 | } else { /* decode response */ | |
4092 | /* BB remember to free buffer if error BB */ | |
4093 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4094 | if (rc == 0) { |
b77d753c SF |
4095 | unsigned int lnoff; |
4096 | ||
1da177e4 | 4097 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4098 | psrch_inf->unicode = true; |
1da177e4 | 4099 | else |
4b18f2a9 | 4100 | psrch_inf->unicode = false; |
1da177e4 LT |
4101 | |
4102 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
01d1bd76 | 4103 | psrch_inf->smallBuf = false; |
50c2f753 SF |
4104 | psrch_inf->srch_entries_start = |
4105 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4106 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4107 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4108 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4109 | ||
790fe579 | 4110 | if (parms->EndofSearch) |
4b18f2a9 | 4111 | psrch_inf->endOfSearch = true; |
1da177e4 | 4112 | else |
4b18f2a9 | 4113 | psrch_inf->endOfSearch = false; |
1da177e4 | 4114 | |
50c2f753 SF |
4115 | psrch_inf->entries_in_buffer = |
4116 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4117 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4118 | psrch_inf->entries_in_buffer; |
b77d753c | 4119 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4120 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4121 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4122 | psrch_inf->last_entry = NULL; |
4123 | return rc; | |
4124 | } | |
4125 | ||
0752f152 | 4126 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4127 | lnoff; |
4128 | ||
c052e2b4 SP |
4129 | if (pnetfid) |
4130 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4131 | } else { |
4132 | cifs_buf_release(pSMB); | |
4133 | } | |
4134 | } | |
4135 | ||
4136 | return rc; | |
4137 | } | |
4138 | ||
6d5786a3 PS |
4139 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4140 | __u16 searchHandle, __u16 search_flags, | |
4141 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4142 | { |
4143 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4144 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4145 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4146 | char *response_data; |
4147 | int rc = 0; | |
9438fabb JL |
4148 | int bytes_returned; |
4149 | unsigned int name_len; | |
1da177e4 LT |
4150 | __u16 params, byte_count; |
4151 | ||
f96637be | 4152 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4153 | |
4b18f2a9 | 4154 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4155 | return -ENOENT; |
4156 | ||
4157 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4158 | (void **) &pSMBr); | |
4159 | if (rc) | |
4160 | return rc; | |
4161 | ||
50c2f753 | 4162 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4163 | byte_count = 0; |
4164 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4165 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4166 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4167 | pSMB->MaxSetupCount = 0; |
4168 | pSMB->Reserved = 0; | |
4169 | pSMB->Flags = 0; | |
4170 | pSMB->Timeout = 0; | |
4171 | pSMB->Reserved2 = 0; | |
4172 | pSMB->ParameterOffset = cpu_to_le16( | |
4173 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4174 | pSMB->DataCount = 0; | |
4175 | pSMB->DataOffset = 0; | |
4176 | pSMB->SetupCount = 1; | |
4177 | pSMB->Reserved3 = 0; | |
4178 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4179 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4180 | pSMB->SearchCount = | |
630f3f0c | 4181 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4182 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4183 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4184 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4185 | |
4186 | name_len = psrch_inf->resume_name_len; | |
4187 | params += name_len; | |
790fe579 | 4188 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4189 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4190 | byte_count += name_len; | |
ef6724e3 SF |
4191 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4192 | pSMB->ResumeFileName[name_len] = 0; | |
4193 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4194 | } else { |
4195 | rc = -EINVAL; | |
4196 | goto FNext2_err_exit; | |
4197 | } | |
4198 | byte_count = params + 1 /* pad */ ; | |
4199 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4200 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4201 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4202 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4203 | |
1da177e4 LT |
4204 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4205 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4206 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4207 | if (rc) { |
4208 | if (rc == -EBADF) { | |
4b18f2a9 | 4209 | psrch_inf->endOfSearch = true; |
6353450a | 4210 | cifs_buf_release(pSMB); |
50c2f753 | 4211 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4212 | } else |
f96637be | 4213 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4214 | } else { /* decode response */ |
4215 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4216 | |
790fe579 | 4217 | if (rc == 0) { |
b77d753c SF |
4218 | unsigned int lnoff; |
4219 | ||
1da177e4 LT |
4220 | /* BB fixme add lock for file (srch_info) struct here */ |
4221 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4222 | psrch_inf->unicode = true; |
1da177e4 | 4223 | else |
4b18f2a9 | 4224 | psrch_inf->unicode = false; |
1da177e4 LT |
4225 | response_data = (char *) &pSMBr->hdr.Protocol + |
4226 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4227 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4228 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4229 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4230 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4231 | cifs_small_buf_release( |
4232 | psrch_inf->ntwrk_buf_start); | |
4233 | else | |
4234 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4235 | psrch_inf->srch_entries_start = response_data; |
4236 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
01d1bd76 | 4237 | psrch_inf->smallBuf = false; |
790fe579 | 4238 | if (parms->EndofSearch) |
4b18f2a9 | 4239 | psrch_inf->endOfSearch = true; |
1da177e4 | 4240 | else |
4b18f2a9 | 4241 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4242 | psrch_inf->entries_in_buffer = |
4243 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4244 | psrch_inf->index_of_last_entry += |
4245 | psrch_inf->entries_in_buffer; | |
b77d753c | 4246 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4247 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4248 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4249 | psrch_inf->last_entry = NULL; |
4250 | return rc; | |
4251 | } else | |
4252 | psrch_inf->last_entry = | |
4253 | psrch_inf->srch_entries_start + lnoff; | |
4254 | ||
f96637be JP |
4255 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4256 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4257 | |
4258 | /* BB fixme add unlock here */ | |
4259 | } | |
4260 | ||
4261 | } | |
4262 | ||
4263 | /* BB On error, should we leave previous search buf (and count and | |
4264 | last entry fields) intact or free the previous one? */ | |
4265 | ||
4266 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4267 | since file handle passed in no longer valid */ | |
4268 | FNext2_err_exit: | |
4269 | if (rc != 0) | |
4270 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4271 | return rc; |
4272 | } | |
4273 | ||
4274 | int | |
6d5786a3 | 4275 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4276 | const __u16 searchHandle) |
1da177e4 LT |
4277 | { |
4278 | int rc = 0; | |
4279 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4280 | |
f96637be | 4281 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4282 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4283 | ||
4284 | /* no sense returning error if session restarted | |
4285 | as file handle has been closed */ | |
790fe579 | 4286 | if (rc == -EAGAIN) |
1da177e4 LT |
4287 | return 0; |
4288 | if (rc) | |
4289 | return rc; | |
4290 | ||
1da177e4 LT |
4291 | pSMB->FileID = searchHandle; |
4292 | pSMB->ByteCount = 0; | |
792af7b0 | 4293 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4294 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4295 | if (rc) |
f96637be | 4296 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4297 | |
44c58186 | 4298 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4299 | |
4300 | /* Since session is dead, search handle closed on server already */ | |
4301 | if (rc == -EAGAIN) | |
4302 | rc = 0; | |
4303 | ||
4304 | return rc; | |
4305 | } | |
4306 | ||
1da177e4 | 4307 | int |
6d5786a3 | 4308 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4309 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4310 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4311 | { |
4312 | int rc = 0; | |
4313 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4314 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4315 | int name_len, bytes_returned; | |
4316 | __u16 params, byte_count; | |
4317 | ||
f96637be | 4318 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4319 | if (tcon == NULL) |
50c2f753 | 4320 | return -ENODEV; |
1da177e4 LT |
4321 | |
4322 | GetInodeNumberRetry: | |
4323 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4324 | (void **) &pSMBr); |
1da177e4 LT |
4325 | if (rc) |
4326 | return rc; | |
4327 | ||
1da177e4 LT |
4328 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4329 | name_len = | |
acbbb76a | 4330 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4331 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4332 | remap); |
1da177e4 LT |
4333 | name_len++; /* trailing null */ |
4334 | name_len *= 2; | |
340625e6 RS |
4335 | } else { |
4336 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4337 | } |
4338 | ||
4339 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4340 | pSMB->TotalDataCount = 0; | |
4341 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4342 | /* BB find exact max data count below from sess structure BB */ | |
4343 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4344 | pSMB->MaxSetupCount = 0; | |
4345 | pSMB->Reserved = 0; | |
4346 | pSMB->Flags = 0; | |
4347 | pSMB->Timeout = 0; | |
4348 | pSMB->Reserved2 = 0; | |
4349 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4350 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4351 | pSMB->DataCount = 0; |
4352 | pSMB->DataOffset = 0; | |
4353 | pSMB->SetupCount = 1; | |
4354 | pSMB->Reserved3 = 0; | |
4355 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4356 | byte_count = params + 1 /* pad */ ; | |
4357 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4358 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4359 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4360 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4361 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4362 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4363 | ||
4364 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4365 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4366 | if (rc) { | |
f96637be | 4367 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4368 | } else { |
4369 | /* decode response */ | |
4370 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4371 | /* BB also check enough total bytes returned */ |
820a803f | 4372 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4373 | /* If rc should we check for EOPNOSUPP and |
4374 | disable the srvino flag? or in caller? */ | |
4375 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4376 | else { |
1da177e4 LT |
4377 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4378 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4379 | struct file_internal_info *pfinfo; |
1da177e4 | 4380 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4381 | if (count < 8) { |
a0a3036b | 4382 | cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4383 | rc = -EIO; |
4384 | goto GetInodeNumOut; | |
4385 | } | |
4386 | pfinfo = (struct file_internal_info *) | |
4387 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4388 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4389 | } |
4390 | } | |
4391 | GetInodeNumOut: | |
4392 | cifs_buf_release(pSMB); | |
4393 | if (rc == -EAGAIN) | |
4394 | goto GetInodeNumberRetry; | |
4395 | return rc; | |
4396 | } | |
1da177e4 LT |
4397 | |
4398 | int | |
6d5786a3 | 4399 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4400 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4401 | unsigned int *num_of_nodes, |
737b758c | 4402 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4403 | { |
4404 | /* TRANS2_GET_DFS_REFERRAL */ | |
4405 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4406 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4407 | int rc = 0; |
4408 | int bytes_returned; | |
4409 | int name_len; | |
1da177e4 | 4410 | __u16 params, byte_count; |
c2cf07d5 SF |
4411 | *num_of_nodes = 0; |
4412 | *target_nodes = NULL; | |
1da177e4 | 4413 | |
f96637be | 4414 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4415 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4416 | return -ENODEV; |
b327a717 | 4417 | |
1da177e4 | 4418 | getDFSRetry: |
b327a717 | 4419 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4420 | (void **) &pSMBr); |
4421 | if (rc) | |
4422 | return rc; | |
50c2f753 SF |
4423 | |
4424 | /* server pointer checked in called function, | |
1982c344 | 4425 | but should never be null here anyway */ |
88257360 | 4426 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4427 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4428 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4429 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4430 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4431 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4432 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4433 | |
4434 | if (ses->capabilities & CAP_UNICODE) { | |
4435 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4436 | name_len = | |
acbbb76a | 4437 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4438 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4439 | remap); |
1da177e4 LT |
4440 | name_len++; /* trailing null */ |
4441 | name_len *= 2; | |
50c2f753 | 4442 | } else { /* BB improve the check for buffer overruns BB */ |
340625e6 | 4443 | name_len = copy_path_name(pSMB->RequestFileName, search_name); |
1da177e4 LT |
4444 | } |
4445 | ||
65c3b205 | 4446 | if (ses->server->sign) |
38d77c50 | 4447 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4448 | |
50c2f753 | 4449 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4450 | |
1da177e4 LT |
4451 | params = 2 /* level */ + name_len /*includes null */ ; |
4452 | pSMB->TotalDataCount = 0; | |
4453 | pSMB->DataCount = 0; | |
4454 | pSMB->DataOffset = 0; | |
4455 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4456 | /* BB find exact max SMB PDU from sess structure BB */ |
4457 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4458 | pSMB->MaxSetupCount = 0; |
4459 | pSMB->Reserved = 0; | |
4460 | pSMB->Flags = 0; | |
4461 | pSMB->Timeout = 0; | |
4462 | pSMB->Reserved2 = 0; | |
4463 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4464 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4465 | pSMB->SetupCount = 1; |
4466 | pSMB->Reserved3 = 0; | |
4467 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4468 | byte_count = params + 3 /* pad */ ; | |
4469 | pSMB->ParameterCount = cpu_to_le16(params); | |
4470 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4471 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4472 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4473 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4474 | ||
4475 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4476 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4477 | if (rc) { | |
f96637be | 4478 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4479 | goto GetDFSRefExit; |
4480 | } | |
4481 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4482 | |
c2cf07d5 | 4483 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4484 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4485 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4486 | goto GetDFSRefExit; |
4487 | } | |
c2cf07d5 | 4488 | |
f96637be JP |
4489 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4490 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4491 | |
fec4585f | 4492 | /* parse returned result into more usable form */ |
4ecce920 AA |
4493 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4494 | le16_to_cpu(pSMBr->t2.DataCount), | |
4495 | num_of_nodes, target_nodes, nls_codepage, | |
4496 | remap, search_name, | |
284316dd | 4497 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4498 | |
1da177e4 | 4499 | GetDFSRefExit: |
0d817bc0 | 4500 | cifs_buf_release(pSMB); |
1da177e4 LT |
4501 | |
4502 | if (rc == -EAGAIN) | |
4503 | goto getDFSRetry; | |
4504 | ||
4505 | return rc; | |
4506 | } | |
4507 | ||
20962438 SF |
4508 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4509 | int | |
6d5786a3 PS |
4510 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4511 | struct kstatfs *FSData) | |
20962438 SF |
4512 | { |
4513 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4514 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4515 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4516 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4517 | int rc = 0; | |
4518 | int bytes_returned = 0; | |
4519 | __u16 params, byte_count; | |
4520 | ||
f96637be | 4521 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4522 | oldQFSInfoRetry: |
4523 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4524 | (void **) &pSMBr); | |
4525 | if (rc) | |
4526 | return rc; | |
20962438 SF |
4527 | |
4528 | params = 2; /* level */ | |
4529 | pSMB->TotalDataCount = 0; | |
4530 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4531 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4532 | pSMB->MaxSetupCount = 0; | |
4533 | pSMB->Reserved = 0; | |
4534 | pSMB->Flags = 0; | |
4535 | pSMB->Timeout = 0; | |
4536 | pSMB->Reserved2 = 0; | |
4537 | byte_count = params + 1 /* pad */ ; | |
4538 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4539 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4540 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4541 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4542 | pSMB->DataCount = 0; | |
4543 | pSMB->DataOffset = 0; | |
4544 | pSMB->SetupCount = 1; | |
4545 | pSMB->Reserved3 = 0; | |
4546 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4547 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4548 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4549 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4550 | ||
4551 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4552 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4553 | if (rc) { | |
f96637be | 4554 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4555 | } else { /* decode response */ |
4556 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4557 | ||
820a803f | 4558 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4559 | rc = -EIO; /* bad smb */ |
4560 | else { | |
4561 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4562 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4563 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4564 | |
50c2f753 | 4565 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4566 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4567 | FSData->f_bsize = | |
4568 | le16_to_cpu(response_data->BytesPerSector) * | |
4569 | le32_to_cpu(response_data-> | |
4570 | SectorsPerAllocationUnit); | |
5a519bea SF |
4571 | /* |
4572 | * much prefer larger but if server doesn't report | |
4573 | * a valid size than 4K is a reasonable minimum | |
4574 | */ | |
4575 | if (FSData->f_bsize < 512) | |
4576 | FSData->f_bsize = 4096; | |
4577 | ||
20962438 | 4578 | FSData->f_blocks = |
50c2f753 | 4579 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4580 | FSData->f_bfree = FSData->f_bavail = |
4581 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4582 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4583 | (unsigned long long)FSData->f_blocks, | |
4584 | (unsigned long long)FSData->f_bfree, | |
4585 | FSData->f_bsize); | |
20962438 SF |
4586 | } |
4587 | } | |
4588 | cifs_buf_release(pSMB); | |
4589 | ||
4590 | if (rc == -EAGAIN) | |
4591 | goto oldQFSInfoRetry; | |
4592 | ||
4593 | return rc; | |
4594 | } | |
4595 | ||
1da177e4 | 4596 | int |
6d5786a3 PS |
4597 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4598 | struct kstatfs *FSData) | |
1da177e4 LT |
4599 | { |
4600 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4601 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4602 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4603 | FILE_SYSTEM_INFO *response_data; | |
4604 | int rc = 0; | |
4605 | int bytes_returned = 0; | |
4606 | __u16 params, byte_count; | |
4607 | ||
f96637be | 4608 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4609 | QFSInfoRetry: |
4610 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4611 | (void **) &pSMBr); | |
4612 | if (rc) | |
4613 | return rc; | |
4614 | ||
4615 | params = 2; /* level */ | |
4616 | pSMB->TotalDataCount = 0; | |
4617 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4618 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4619 | pSMB->MaxSetupCount = 0; |
4620 | pSMB->Reserved = 0; | |
4621 | pSMB->Flags = 0; | |
4622 | pSMB->Timeout = 0; | |
4623 | pSMB->Reserved2 = 0; | |
4624 | byte_count = params + 1 /* pad */ ; | |
4625 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4626 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4627 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4628 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4629 | pSMB->DataCount = 0; |
4630 | pSMB->DataOffset = 0; | |
4631 | pSMB->SetupCount = 1; | |
4632 | pSMB->Reserved3 = 0; | |
4633 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4634 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4635 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4636 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4637 | ||
4638 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4639 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4640 | if (rc) { | |
f96637be | 4641 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 4642 | } else { /* decode response */ |
50c2f753 | 4643 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4644 | |
820a803f | 4645 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4646 | rc = -EIO; /* bad smb */ |
4647 | else { | |
4648 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4649 | |
4650 | response_data = | |
4651 | (FILE_SYSTEM_INFO | |
4652 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4653 | data_offset); | |
4654 | FSData->f_bsize = | |
4655 | le32_to_cpu(response_data->BytesPerSector) * | |
4656 | le32_to_cpu(response_data-> | |
4657 | SectorsPerAllocationUnit); | |
5a519bea SF |
4658 | /* |
4659 | * much prefer larger but if server doesn't report | |
4660 | * a valid size than 4K is a reasonable minimum | |
4661 | */ | |
4662 | if (FSData->f_bsize < 512) | |
4663 | FSData->f_bsize = 4096; | |
4664 | ||
1da177e4 LT |
4665 | FSData->f_blocks = |
4666 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4667 | FSData->f_bfree = FSData->f_bavail = | |
4668 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4669 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4670 | (unsigned long long)FSData->f_blocks, | |
4671 | (unsigned long long)FSData->f_bfree, | |
4672 | FSData->f_bsize); | |
1da177e4 LT |
4673 | } |
4674 | } | |
4675 | cifs_buf_release(pSMB); | |
4676 | ||
4677 | if (rc == -EAGAIN) | |
4678 | goto QFSInfoRetry; | |
4679 | ||
4680 | return rc; | |
4681 | } | |
4682 | ||
4683 | int | |
6d5786a3 | 4684 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4685 | { |
4686 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4687 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4688 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4689 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4690 | int rc = 0; | |
4691 | int bytes_returned = 0; | |
4692 | __u16 params, byte_count; | |
4693 | ||
f96637be | 4694 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
4695 | QFSAttributeRetry: |
4696 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4697 | (void **) &pSMBr); | |
4698 | if (rc) | |
4699 | return rc; | |
4700 | ||
4701 | params = 2; /* level */ | |
4702 | pSMB->TotalDataCount = 0; | |
4703 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4704 | /* BB find exact max SMB PDU from sess structure BB */ |
4705 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4706 | pSMB->MaxSetupCount = 0; |
4707 | pSMB->Reserved = 0; | |
4708 | pSMB->Flags = 0; | |
4709 | pSMB->Timeout = 0; | |
4710 | pSMB->Reserved2 = 0; | |
4711 | byte_count = params + 1 /* pad */ ; | |
4712 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4713 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4714 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4715 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4716 | pSMB->DataCount = 0; |
4717 | pSMB->DataOffset = 0; | |
4718 | pSMB->SetupCount = 1; | |
4719 | pSMB->Reserved3 = 0; | |
4720 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4721 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4722 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4723 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4724 | ||
4725 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4726 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4727 | if (rc) { | |
f96637be | 4728 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
4729 | } else { /* decode response */ |
4730 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4731 | ||
820a803f | 4732 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4733 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4734 | rc = -EIO; /* bad smb */ |
4735 | } else { | |
4736 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4737 | response_data = | |
4738 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4739 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4740 | data_offset); | |
4741 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4742 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4743 | } |
4744 | } | |
4745 | cifs_buf_release(pSMB); | |
4746 | ||
4747 | if (rc == -EAGAIN) | |
4748 | goto QFSAttributeRetry; | |
4749 | ||
4750 | return rc; | |
4751 | } | |
4752 | ||
4753 | int | |
6d5786a3 | 4754 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4755 | { |
4756 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4757 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4758 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4759 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4760 | int rc = 0; | |
4761 | int bytes_returned = 0; | |
4762 | __u16 params, byte_count; | |
4763 | ||
f96637be | 4764 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
4765 | QFSDeviceRetry: |
4766 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4767 | (void **) &pSMBr); | |
4768 | if (rc) | |
4769 | return rc; | |
4770 | ||
4771 | params = 2; /* level */ | |
4772 | pSMB->TotalDataCount = 0; | |
4773 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4774 | /* BB find exact max SMB PDU from sess structure BB */ |
4775 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4776 | pSMB->MaxSetupCount = 0; |
4777 | pSMB->Reserved = 0; | |
4778 | pSMB->Flags = 0; | |
4779 | pSMB->Timeout = 0; | |
4780 | pSMB->Reserved2 = 0; | |
4781 | byte_count = params + 1 /* pad */ ; | |
4782 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4783 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4784 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4785 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4786 | |
4787 | pSMB->DataCount = 0; | |
4788 | pSMB->DataOffset = 0; | |
4789 | pSMB->SetupCount = 1; | |
4790 | pSMB->Reserved3 = 0; | |
4791 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4792 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4793 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4794 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4795 | ||
4796 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4797 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4798 | if (rc) { | |
f96637be | 4799 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
4800 | } else { /* decode response */ |
4801 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4802 | ||
820a803f JL |
4803 | if (rc || get_bcc(&pSMBr->hdr) < |
4804 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4805 | rc = -EIO; /* bad smb */ |
4806 | else { | |
4807 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4808 | response_data = | |
737b758c SF |
4809 | (FILE_SYSTEM_DEVICE_INFO *) |
4810 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4811 | data_offset); |
4812 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4813 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4814 | } |
4815 | } | |
4816 | cifs_buf_release(pSMB); | |
4817 | ||
4818 | if (rc == -EAGAIN) | |
4819 | goto QFSDeviceRetry; | |
4820 | ||
4821 | return rc; | |
4822 | } | |
4823 | ||
4824 | int | |
6d5786a3 | 4825 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4826 | { |
4827 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4828 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4829 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4830 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4831 | int rc = 0; | |
4832 | int bytes_returned = 0; | |
4833 | __u16 params, byte_count; | |
4834 | ||
f96637be | 4835 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 4836 | QFSUnixRetry: |
f569599a JL |
4837 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4838 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4839 | if (rc) |
4840 | return rc; | |
4841 | ||
4842 | params = 2; /* level */ | |
4843 | pSMB->TotalDataCount = 0; | |
4844 | pSMB->DataCount = 0; | |
4845 | pSMB->DataOffset = 0; | |
4846 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4847 | /* BB find exact max SMB PDU from sess structure BB */ |
4848 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4849 | pSMB->MaxSetupCount = 0; |
4850 | pSMB->Reserved = 0; | |
4851 | pSMB->Flags = 0; | |
4852 | pSMB->Timeout = 0; | |
4853 | pSMB->Reserved2 = 0; | |
4854 | byte_count = params + 1 /* pad */ ; | |
4855 | pSMB->ParameterCount = cpu_to_le16(params); | |
4856 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4857 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4858 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4859 | pSMB->SetupCount = 1; |
4860 | pSMB->Reserved3 = 0; | |
4861 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4862 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4863 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4864 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4865 | ||
4866 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4867 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4868 | if (rc) { | |
f96637be | 4869 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
4870 | } else { /* decode response */ |
4871 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4872 | ||
820a803f | 4873 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4874 | rc = -EIO; /* bad smb */ |
4875 | } else { | |
4876 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4877 | response_data = | |
4878 | (FILE_SYSTEM_UNIX_INFO | |
4879 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4880 | data_offset); | |
4881 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4882 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4883 | } |
4884 | } | |
4885 | cifs_buf_release(pSMB); | |
4886 | ||
4887 | if (rc == -EAGAIN) | |
4888 | goto QFSUnixRetry; | |
4889 | ||
4890 | ||
4891 | return rc; | |
4892 | } | |
4893 | ||
ac67055e | 4894 | int |
6d5786a3 | 4895 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
4896 | { |
4897 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4898 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4899 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4900 | int rc = 0; | |
4901 | int bytes_returned = 0; | |
4902 | __u16 params, param_offset, offset, byte_count; | |
4903 | ||
f96637be | 4904 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 4905 | SETFSUnixRetry: |
f26282c9 | 4906 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4907 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4908 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4909 | if (rc) |
4910 | return rc; | |
4911 | ||
4912 | params = 4; /* 2 bytes zero followed by info level. */ | |
4913 | pSMB->MaxSetupCount = 0; | |
4914 | pSMB->Reserved = 0; | |
4915 | pSMB->Flags = 0; | |
4916 | pSMB->Timeout = 0; | |
4917 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4918 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4919 | - 4; | |
ac67055e JA |
4920 | offset = param_offset + params; |
4921 | ||
4922 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4923 | /* BB find exact max SMB PDU from sess structure BB */ |
4924 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4925 | pSMB->SetupCount = 1; |
4926 | pSMB->Reserved3 = 0; | |
4927 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4928 | byte_count = 1 /* pad */ + params + 12; | |
4929 | ||
4930 | pSMB->DataCount = cpu_to_le16(12); | |
4931 | pSMB->ParameterCount = cpu_to_le16(params); | |
4932 | pSMB->TotalDataCount = pSMB->DataCount; | |
4933 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4934 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4935 | pSMB->DataOffset = cpu_to_le16(offset); | |
4936 | ||
4937 | /* Params. */ | |
4938 | pSMB->FileNum = 0; | |
4939 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4940 | ||
4941 | /* Data. */ | |
4942 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4943 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4944 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4945 | ||
be8e3b00 | 4946 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4947 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4948 | ||
4949 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4950 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4951 | if (rc) { | |
f96637be | 4952 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
4953 | } else { /* decode response */ |
4954 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4955 | if (rc) |
ac67055e | 4956 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4957 | } |
4958 | cifs_buf_release(pSMB); | |
4959 | ||
4960 | if (rc == -EAGAIN) | |
4961 | goto SETFSUnixRetry; | |
4962 | ||
4963 | return rc; | |
4964 | } | |
4965 | ||
4966 | ||
1da177e4 LT |
4967 | |
4968 | int | |
6d5786a3 | 4969 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 4970 | struct kstatfs *FSData) |
1da177e4 LT |
4971 | { |
4972 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4973 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4974 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4975 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4976 | int rc = 0; | |
4977 | int bytes_returned = 0; | |
4978 | __u16 params, byte_count; | |
4979 | ||
f96637be | 4980 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
4981 | QFSPosixRetry: |
4982 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4983 | (void **) &pSMBr); | |
4984 | if (rc) | |
4985 | return rc; | |
4986 | ||
4987 | params = 2; /* level */ | |
4988 | pSMB->TotalDataCount = 0; | |
4989 | pSMB->DataCount = 0; | |
4990 | pSMB->DataOffset = 0; | |
4991 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4992 | /* BB find exact max SMB PDU from sess structure BB */ |
4993 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4994 | pSMB->MaxSetupCount = 0; |
4995 | pSMB->Reserved = 0; | |
4996 | pSMB->Flags = 0; | |
4997 | pSMB->Timeout = 0; | |
4998 | pSMB->Reserved2 = 0; | |
4999 | byte_count = params + 1 /* pad */ ; | |
5000 | pSMB->ParameterCount = cpu_to_le16(params); | |
5001 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5002 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5003 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5004 | pSMB->SetupCount = 1; |
5005 | pSMB->Reserved3 = 0; | |
5006 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5007 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5008 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5009 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5010 | ||
5011 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5012 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5013 | if (rc) { | |
f96637be | 5014 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5015 | } else { /* decode response */ |
5016 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5017 | ||
820a803f | 5018 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5019 | rc = -EIO; /* bad smb */ |
5020 | } else { | |
5021 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5022 | response_data = | |
5023 | (FILE_SYSTEM_POSIX_INFO | |
5024 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5025 | data_offset); | |
5026 | FSData->f_bsize = | |
5027 | le32_to_cpu(response_data->BlockSize); | |
5a519bea SF |
5028 | /* |
5029 | * much prefer larger but if server doesn't report | |
5030 | * a valid size than 4K is a reasonable minimum | |
5031 | */ | |
5032 | if (FSData->f_bsize < 512) | |
5033 | FSData->f_bsize = 4096; | |
5034 | ||
1da177e4 LT |
5035 | FSData->f_blocks = |
5036 | le64_to_cpu(response_data->TotalBlocks); | |
5037 | FSData->f_bfree = | |
5038 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5039 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5040 | FSData->f_bavail = FSData->f_bfree; |
5041 | } else { | |
5042 | FSData->f_bavail = | |
50c2f753 | 5043 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5044 | } |
790fe579 | 5045 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5046 | FSData->f_files = |
50c2f753 | 5047 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5048 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5049 | FSData->f_ffree = |
50c2f753 | 5050 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5051 | } |
5052 | } | |
5053 | cifs_buf_release(pSMB); | |
5054 | ||
5055 | if (rc == -EAGAIN) | |
5056 | goto QFSPosixRetry; | |
5057 | ||
5058 | return rc; | |
5059 | } | |
5060 | ||
5061 | ||
d1433418 PS |
5062 | /* |
5063 | * We can not use write of zero bytes trick to set file size due to need for | |
5064 | * large file support. Also note that this SetPathInfo is preferred to | |
5065 | * SetFileInfo based method in next routine which is only needed to work around | |
5066 | * a sharing violation bugin Samba which this routine can run into. | |
5067 | */ | |
1da177e4 | 5068 | int |
6d5786a3 | 5069 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5070 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5071 | bool set_allocation) | |
1da177e4 LT |
5072 | { |
5073 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5074 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5075 | struct file_end_of_file_info *parm_data; | |
5076 | int name_len; | |
5077 | int rc = 0; | |
5078 | int bytes_returned = 0; | |
2baa2682 | 5079 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5080 | |
1da177e4 LT |
5081 | __u16 params, byte_count, data_count, param_offset, offset; |
5082 | ||
f96637be | 5083 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5084 | SetEOFRetry: |
5085 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5086 | (void **) &pSMBr); | |
5087 | if (rc) | |
5088 | return rc; | |
5089 | ||
5090 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5091 | name_len = | |
d1433418 PS |
5092 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5093 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5094 | name_len++; /* trailing null */ |
5095 | name_len *= 2; | |
340625e6 RS |
5096 | } else { |
5097 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5098 | } |
5099 | params = 6 + name_len; | |
26f57364 | 5100 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5101 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5102 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5103 | pSMB->MaxSetupCount = 0; |
5104 | pSMB->Reserved = 0; | |
5105 | pSMB->Flags = 0; | |
5106 | pSMB->Timeout = 0; | |
5107 | pSMB->Reserved2 = 0; | |
5108 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5109 | InformationLevel) - 4; |
1da177e4 | 5110 | offset = param_offset + params; |
d1433418 | 5111 | if (set_allocation) { |
50c2f753 SF |
5112 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5113 | pSMB->InformationLevel = | |
5114 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5115 | else | |
5116 | pSMB->InformationLevel = | |
5117 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5118 | } else /* Set File Size */ { | |
1da177e4 LT |
5119 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5120 | pSMB->InformationLevel = | |
50c2f753 | 5121 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5122 | else |
5123 | pSMB->InformationLevel = | |
50c2f753 | 5124 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5125 | } |
5126 | ||
5127 | parm_data = | |
5128 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5129 | offset); | |
5130 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5131 | pSMB->DataOffset = cpu_to_le16(offset); | |
5132 | pSMB->SetupCount = 1; | |
5133 | pSMB->Reserved3 = 0; | |
5134 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5135 | byte_count = 3 /* pad */ + params + data_count; | |
5136 | pSMB->DataCount = cpu_to_le16(data_count); | |
5137 | pSMB->TotalDataCount = pSMB->DataCount; | |
5138 | pSMB->ParameterCount = cpu_to_le16(params); | |
5139 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5140 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5141 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5142 | parm_data->FileSize = cpu_to_le64(size); |
5143 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5144 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5145 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5146 | if (rc) |
f96637be | 5147 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5148 | |
5149 | cifs_buf_release(pSMB); | |
5150 | ||
5151 | if (rc == -EAGAIN) | |
5152 | goto SetEOFRetry; | |
5153 | ||
5154 | return rc; | |
5155 | } | |
5156 | ||
5157 | int | |
d1433418 PS |
5158 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5159 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5160 | { |
5161 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5162 | struct file_end_of_file_info *parm_data; |
5163 | int rc = 0; | |
1da177e4 LT |
5164 | __u16 params, param_offset, offset, byte_count, count; |
5165 | ||
f96637be JP |
5166 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5167 | (long long)size); | |
cd63499c SF |
5168 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5169 | ||
1da177e4 LT |
5170 | if (rc) |
5171 | return rc; | |
5172 | ||
d1433418 PS |
5173 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5174 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5175 | |
1da177e4 LT |
5176 | params = 6; |
5177 | pSMB->MaxSetupCount = 0; | |
5178 | pSMB->Reserved = 0; | |
5179 | pSMB->Flags = 0; | |
5180 | pSMB->Timeout = 0; | |
5181 | pSMB->Reserved2 = 0; | |
5182 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5183 | offset = param_offset + params; | |
5184 | ||
1da177e4 LT |
5185 | count = sizeof(struct file_end_of_file_info); |
5186 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5187 | /* BB find exact max SMB PDU from sess structure BB */ |
5188 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5189 | pSMB->SetupCount = 1; |
5190 | pSMB->Reserved3 = 0; | |
5191 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5192 | byte_count = 3 /* pad */ + params + count; | |
5193 | pSMB->DataCount = cpu_to_le16(count); | |
5194 | pSMB->ParameterCount = cpu_to_le16(params); | |
5195 | pSMB->TotalDataCount = pSMB->DataCount; | |
5196 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5197 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
e3973ea3 | 5198 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
1da177e4 | 5199 | parm_data = |
e3973ea3 | 5200 | (struct file_end_of_file_info *)(((char *)pSMB) + offset + 4); |
1da177e4 LT |
5201 | pSMB->DataOffset = cpu_to_le16(offset); |
5202 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5203 | pSMB->Fid = cfile->fid.netfid; |
5204 | if (set_allocation) { | |
1da177e4 LT |
5205 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5206 | pSMB->InformationLevel = | |
5207 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5208 | else | |
5209 | pSMB->InformationLevel = | |
5210 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5211 | } else /* Set File Size */ { |
1da177e4 LT |
5212 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5213 | pSMB->InformationLevel = | |
50c2f753 | 5214 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5215 | else |
5216 | pSMB->InformationLevel = | |
50c2f753 | 5217 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5218 | } |
5219 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5220 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5221 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5222 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5223 | cifs_small_buf_release(pSMB); |
1da177e4 | 5224 | if (rc) { |
f96637be JP |
5225 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5226 | rc); | |
1da177e4 LT |
5227 | } |
5228 | ||
50c2f753 | 5229 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5230 | since file handle passed in no longer valid */ |
5231 | ||
5232 | return rc; | |
5233 | } | |
5234 | ||
50c2f753 | 5235 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5236 | an open handle, rather than by pathname - this is awkward due to |
5237 | potential access conflicts on the open, but it is unavoidable for these | |
5238 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5239 | time and resort to the original setpathinfo level which takes the ancient | |
5240 | DOS time format with 2 second granularity */ | |
5241 | int | |
6d5786a3 | 5242 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5243 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5244 | { |
5245 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5246 | char *data_offset; |
5247 | int rc = 0; | |
1da177e4 LT |
5248 | __u16 params, param_offset, offset, byte_count, count; |
5249 | ||
f96637be | 5250 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5251 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5252 | ||
1da177e4 LT |
5253 | if (rc) |
5254 | return rc; | |
5255 | ||
2dd2dfa0 JL |
5256 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5257 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5258 | |
1da177e4 LT |
5259 | params = 6; |
5260 | pSMB->MaxSetupCount = 0; | |
5261 | pSMB->Reserved = 0; | |
5262 | pSMB->Flags = 0; | |
5263 | pSMB->Timeout = 0; | |
5264 | pSMB->Reserved2 = 0; | |
5265 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5266 | offset = param_offset + params; | |
5267 | ||
b2a3ad9c JL |
5268 | data_offset = (char *)pSMB + |
5269 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5270 | |
26f57364 | 5271 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5272 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5273 | /* BB find max SMB PDU from sess */ |
5274 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5275 | pSMB->SetupCount = 1; |
5276 | pSMB->Reserved3 = 0; | |
5277 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5278 | byte_count = 3 /* pad */ + params + count; | |
5279 | pSMB->DataCount = cpu_to_le16(count); | |
5280 | pSMB->ParameterCount = cpu_to_le16(params); | |
5281 | pSMB->TotalDataCount = pSMB->DataCount; | |
5282 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5283 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5284 | pSMB->DataOffset = cpu_to_le16(offset); | |
5285 | pSMB->Fid = fid; | |
5286 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5287 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5288 | else | |
5289 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5290 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5291 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5292 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5293 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5294 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5295 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5296 | if (rc) |
f96637be JP |
5297 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5298 | rc); | |
1da177e4 | 5299 | |
50c2f753 | 5300 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5301 | since file handle passed in no longer valid */ |
5302 | ||
5303 | return rc; | |
5304 | } | |
5305 | ||
6d22f098 | 5306 | int |
6d5786a3 | 5307 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5308 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5309 | { | |
5310 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5311 | char *data_offset; | |
5312 | int rc = 0; | |
5313 | __u16 params, param_offset, offset, byte_count, count; | |
5314 | ||
f96637be | 5315 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5316 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5317 | ||
5318 | if (rc) | |
5319 | return rc; | |
5320 | ||
5321 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5322 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5323 | ||
5324 | params = 6; | |
5325 | pSMB->MaxSetupCount = 0; | |
5326 | pSMB->Reserved = 0; | |
5327 | pSMB->Flags = 0; | |
5328 | pSMB->Timeout = 0; | |
5329 | pSMB->Reserved2 = 0; | |
5330 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5331 | offset = param_offset + params; | |
5332 | ||
2a780e8b SF |
5333 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5334 | data_offset = (char *)(pSMB) + offset + 4; | |
6d22f098 JL |
5335 | |
5336 | count = 1; | |
5337 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5338 | /* BB find max SMB PDU from sess */ | |
5339 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5340 | pSMB->SetupCount = 1; | |
5341 | pSMB->Reserved3 = 0; | |
5342 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5343 | byte_count = 3 /* pad */ + params + count; | |
5344 | pSMB->DataCount = cpu_to_le16(count); | |
5345 | pSMB->ParameterCount = cpu_to_le16(params); | |
5346 | pSMB->TotalDataCount = pSMB->DataCount; | |
5347 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5348 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5349 | pSMB->DataOffset = cpu_to_le16(offset); | |
5350 | pSMB->Fid = fid; | |
5351 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5352 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5353 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5354 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5355 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5356 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5357 | cifs_small_buf_release(pSMB); |
6d22f098 | 5358 | if (rc) |
f96637be | 5359 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5360 | |
5361 | return rc; | |
5362 | } | |
1da177e4 | 5363 | |
8e408fc9 RS |
5364 | static int |
5365 | CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon, | |
5366 | const char *fileName, const FILE_BASIC_INFO *data, | |
5367 | const struct nls_table *nls_codepage, | |
5368 | struct cifs_sb_info *cifs_sb) | |
5369 | { | |
5370 | int oplock = 0; | |
5371 | struct cifs_open_parms oparms; | |
5372 | struct cifs_fid fid; | |
5373 | int rc; | |
5374 | ||
5375 | oparms.tcon = tcon; | |
5376 | oparms.cifs_sb = cifs_sb; | |
5377 | oparms.desired_access = GENERIC_WRITE; | |
5378 | oparms.create_options = cifs_create_options(cifs_sb, 0); | |
5379 | oparms.disposition = FILE_OPEN; | |
5380 | oparms.path = fileName; | |
5381 | oparms.fid = &fid; | |
5382 | oparms.reconnect = false; | |
5383 | ||
5384 | rc = CIFS_open(xid, &oparms, &oplock, NULL); | |
5385 | if (rc) | |
5386 | goto out; | |
5387 | ||
5388 | rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid); | |
5389 | CIFSSMBClose(xid, tcon, fid.netfid); | |
5390 | out: | |
5391 | ||
5392 | return rc; | |
5393 | } | |
5394 | ||
1da177e4 | 5395 | int |
6d5786a3 | 5396 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 | 5397 | const char *fileName, const FILE_BASIC_INFO *data, |
8e408fc9 RS |
5398 | const struct nls_table *nls_codepage, |
5399 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
5400 | { |
5401 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5402 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5403 | int name_len; | |
5404 | int rc = 0; | |
5405 | int bytes_returned = 0; | |
5406 | char *data_offset; | |
5407 | __u16 params, param_offset, offset, byte_count, count; | |
8e408fc9 | 5408 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5409 | |
f96637be | 5410 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5411 | |
5412 | SetTimesRetry: | |
5413 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5414 | (void **) &pSMBr); | |
5415 | if (rc) | |
5416 | return rc; | |
5417 | ||
5418 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5419 | name_len = | |
acbbb76a SF |
5420 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5421 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5422 | name_len++; /* trailing null */ |
5423 | name_len *= 2; | |
340625e6 RS |
5424 | } else { |
5425 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5426 | } |
5427 | ||
5428 | params = 6 + name_len; | |
26f57364 | 5429 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5430 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5431 | /* BB find max SMB PDU from sess structure BB */ |
5432 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5433 | pSMB->MaxSetupCount = 0; |
5434 | pSMB->Reserved = 0; | |
5435 | pSMB->Flags = 0; | |
5436 | pSMB->Timeout = 0; | |
5437 | pSMB->Reserved2 = 0; | |
5438 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5439 | InformationLevel) - 4; |
1da177e4 LT |
5440 | offset = param_offset + params; |
5441 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5442 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5443 | pSMB->DataOffset = cpu_to_le16(offset); | |
5444 | pSMB->SetupCount = 1; | |
5445 | pSMB->Reserved3 = 0; | |
5446 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5447 | byte_count = 3 /* pad */ + params + count; | |
5448 | ||
5449 | pSMB->DataCount = cpu_to_le16(count); | |
5450 | pSMB->ParameterCount = cpu_to_le16(params); | |
5451 | pSMB->TotalDataCount = pSMB->DataCount; | |
5452 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5453 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5454 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5455 | else | |
5456 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5457 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5458 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5459 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5460 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5461 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5462 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5463 | if (rc) |
f96637be | 5464 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5465 | |
5466 | cifs_buf_release(pSMB); | |
5467 | ||
5468 | if (rc == -EAGAIN) | |
5469 | goto SetTimesRetry; | |
5470 | ||
8e408fc9 RS |
5471 | if (rc == -EOPNOTSUPP) |
5472 | return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data, | |
5473 | nls_codepage, cifs_sb); | |
5474 | ||
1da177e4 LT |
5475 | return rc; |
5476 | } | |
5477 | ||
654cf14a JL |
5478 | static void |
5479 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5480 | const struct cifs_unix_set_info_args *args) | |
5481 | { | |
49418b2c | 5482 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5483 | u64 mode = args->mode; |
5484 | ||
49418b2c EB |
5485 | if (uid_valid(args->uid)) |
5486 | uid = from_kuid(&init_user_ns, args->uid); | |
5487 | if (gid_valid(args->gid)) | |
5488 | gid = from_kgid(&init_user_ns, args->gid); | |
5489 | ||
654cf14a JL |
5490 | /* |
5491 | * Samba server ignores set of file size to zero due to bugs in some | |
5492 | * older clients, but we should be precise - we use SetFileSize to | |
5493 | * set file size and do not want to truncate file size to zero | |
25985edc | 5494 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5495 | * zero instead of -1 here |
5496 | */ | |
5497 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5498 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5499 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5500 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5501 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5502 | data_offset->Uid = cpu_to_le64(uid); |
5503 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5504 | /* better to leave device as zero when it is */ |
5505 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5506 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5507 | data_offset->Permissions = cpu_to_le64(mode); | |
5508 | ||
5509 | if (S_ISREG(mode)) | |
5510 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5511 | else if (S_ISDIR(mode)) | |
5512 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5513 | else if (S_ISLNK(mode)) | |
5514 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5515 | else if (S_ISCHR(mode)) | |
5516 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5517 | else if (S_ISBLK(mode)) | |
5518 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5519 | else if (S_ISFIFO(mode)) | |
5520 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5521 | else if (S_ISSOCK(mode)) | |
5522 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5523 | } | |
5524 | ||
3bbeeb3c | 5525 | int |
6d5786a3 | 5526 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5527 | const struct cifs_unix_set_info_args *args, |
5528 | u16 fid, u32 pid_of_opener) | |
5529 | { | |
5530 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5531 | char *data_offset; |
3bbeeb3c JL |
5532 | int rc = 0; |
5533 | u16 params, param_offset, offset, byte_count, count; | |
5534 | ||
f96637be | 5535 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5536 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5537 | ||
5538 | if (rc) | |
5539 | return rc; | |
5540 | ||
5541 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5542 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5543 | ||
5544 | params = 6; | |
5545 | pSMB->MaxSetupCount = 0; | |
5546 | pSMB->Reserved = 0; | |
5547 | pSMB->Flags = 0; | |
5548 | pSMB->Timeout = 0; | |
5549 | pSMB->Reserved2 = 0; | |
5550 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5551 | offset = param_offset + params; | |
5552 | ||
b2a3ad9c JL |
5553 | data_offset = (char *)pSMB + |
5554 | offsetof(struct smb_hdr, Protocol) + offset; | |
5555 | ||
3bbeeb3c JL |
5556 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5557 | ||
5558 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5559 | /* BB find max SMB PDU from sess */ | |
5560 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5561 | pSMB->SetupCount = 1; | |
5562 | pSMB->Reserved3 = 0; | |
5563 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5564 | byte_count = 3 /* pad */ + params + count; | |
5565 | pSMB->DataCount = cpu_to_le16(count); | |
5566 | pSMB->ParameterCount = cpu_to_le16(params); | |
5567 | pSMB->TotalDataCount = pSMB->DataCount; | |
5568 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5569 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5570 | pSMB->DataOffset = cpu_to_le16(offset); | |
5571 | pSMB->Fid = fid; | |
5572 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5573 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5574 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5575 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5576 | ||
b2a3ad9c | 5577 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5578 | |
792af7b0 | 5579 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5580 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 5581 | if (rc) |
f96637be JP |
5582 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5583 | rc); | |
3bbeeb3c JL |
5584 | |
5585 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5586 | since file handle passed in no longer valid */ | |
5587 | ||
5588 | return rc; | |
5589 | } | |
5590 | ||
1da177e4 | 5591 | int |
6d5786a3 | 5592 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5593 | const char *file_name, |
01ea95e3 JL |
5594 | const struct cifs_unix_set_info_args *args, |
5595 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5596 | { |
5597 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5598 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5599 | int name_len; | |
5600 | int rc = 0; | |
5601 | int bytes_returned = 0; | |
5602 | FILE_UNIX_BASIC_INFO *data_offset; | |
5603 | __u16 params, param_offset, offset, count, byte_count; | |
5604 | ||
f96637be | 5605 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5606 | setPermsRetry: |
5607 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5608 | (void **) &pSMBr); | |
5609 | if (rc) | |
5610 | return rc; | |
5611 | ||
5612 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5613 | name_len = | |
ff691e96 | 5614 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5615 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5616 | name_len++; /* trailing null */ |
5617 | name_len *= 2; | |
340625e6 RS |
5618 | } else { |
5619 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5620 | } |
5621 | ||
5622 | params = 6 + name_len; | |
26f57364 | 5623 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5624 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5625 | /* BB find max SMB PDU from sess structure BB */ |
5626 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5627 | pSMB->MaxSetupCount = 0; |
5628 | pSMB->Reserved = 0; | |
5629 | pSMB->Flags = 0; | |
5630 | pSMB->Timeout = 0; | |
5631 | pSMB->Reserved2 = 0; | |
5632 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5633 | InformationLevel) - 4; |
1da177e4 | 5634 | offset = param_offset + params; |
b019e118 SF |
5635 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5636 | data_offset = (FILE_UNIX_BASIC_INFO *)((char *) pSMB + offset + 4); | |
1da177e4 LT |
5637 | memset(data_offset, 0, count); |
5638 | pSMB->DataOffset = cpu_to_le16(offset); | |
5639 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5640 | pSMB->SetupCount = 1; | |
5641 | pSMB->Reserved3 = 0; | |
5642 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5643 | byte_count = 3 /* pad */ + params + count; | |
5644 | pSMB->ParameterCount = cpu_to_le16(params); | |
5645 | pSMB->DataCount = cpu_to_le16(count); | |
5646 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5647 | pSMB->TotalDataCount = pSMB->DataCount; | |
5648 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5649 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5650 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5651 | |
654cf14a | 5652 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5653 | |
5654 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5655 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5656 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5657 | if (rc) |
f96637be | 5658 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 5659 | |
0d817bc0 | 5660 | cifs_buf_release(pSMB); |
1da177e4 LT |
5661 | if (rc == -EAGAIN) |
5662 | goto setPermsRetry; | |
5663 | return rc; | |
5664 | } | |
5665 | ||
1da177e4 | 5666 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5667 | /* |
5668 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5669 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5670 | * it looks for that attribute name and stuffs that value into the EAData | |
5671 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5672 | * buffer. In both cases, the return value is either the length of the | |
5673 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5674 | * the data isn't copied to it, but the length is returned. | |
5675 | */ | |
1da177e4 | 5676 | ssize_t |
6d5786a3 | 5677 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
5678 | const unsigned char *searchName, const unsigned char *ea_name, |
5679 | char *EAData, size_t buf_size, | |
67b4c889 | 5680 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5681 | { |
5682 | /* BB assumes one setup word */ | |
5683 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5684 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
5685 | int remap = cifs_remap(cifs_sb); |
5686 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
5687 | int rc = 0; |
5688 | int bytes_returned; | |
6e462b9f | 5689 | int list_len; |
f0d3868b | 5690 | struct fealist *ea_response_data; |
50c2f753 SF |
5691 | struct fea *temp_fea; |
5692 | char *temp_ptr; | |
0cd126b5 | 5693 | char *end_of_smb; |
f0d3868b | 5694 | __u16 params, byte_count, data_offset; |
5980fc96 | 5695 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 5696 | |
f96637be | 5697 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
5698 | QAllEAsRetry: |
5699 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5700 | (void **) &pSMBr); | |
5701 | if (rc) | |
5702 | return rc; | |
5703 | ||
5704 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5705 | list_len = |
acbbb76a SF |
5706 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
5707 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
5708 | list_len++; /* trailing null */ |
5709 | list_len *= 2; | |
340625e6 RS |
5710 | } else { |
5711 | list_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
5712 | } |
5713 | ||
6e462b9f | 5714 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5715 | pSMB->TotalDataCount = 0; |
5716 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5717 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5718 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5719 | pSMB->MaxSetupCount = 0; |
5720 | pSMB->Reserved = 0; | |
5721 | pSMB->Flags = 0; | |
5722 | pSMB->Timeout = 0; | |
5723 | pSMB->Reserved2 = 0; | |
5724 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5725 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5726 | pSMB->DataCount = 0; |
5727 | pSMB->DataOffset = 0; | |
5728 | pSMB->SetupCount = 1; | |
5729 | pSMB->Reserved3 = 0; | |
5730 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5731 | byte_count = params + 1 /* pad */ ; | |
5732 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5733 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5734 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5735 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5736 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5737 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5738 | ||
5739 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5740 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5741 | if (rc) { | |
f96637be | 5742 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
5743 | goto QAllEAsOut; |
5744 | } | |
1da177e4 | 5745 | |
f0d3868b JL |
5746 | |
5747 | /* BB also check enough total bytes returned */ | |
5748 | /* BB we need to improve the validity checking | |
5749 | of these trans2 responses */ | |
5750 | ||
5751 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5752 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5753 | rc = -EIO; /* bad smb */ |
5754 | goto QAllEAsOut; | |
5755 | } | |
5756 | ||
5757 | /* check that length of list is not more than bcc */ | |
5758 | /* check that each entry does not go beyond length | |
5759 | of list */ | |
5760 | /* check that each element of each entry does not | |
5761 | go beyond end of list */ | |
5762 | /* validate_trans2_offsets() */ | |
5763 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5764 | ||
5765 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5766 | ea_response_data = (struct fealist *) | |
5767 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5768 | ||
6e462b9f | 5769 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 5770 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 5771 | if (list_len <= 8) { |
f96637be | 5772 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
5773 | /* didn't find the named attribute */ |
5774 | if (ea_name) | |
5775 | rc = -ENODATA; | |
f0d3868b JL |
5776 | goto QAllEAsOut; |
5777 | } | |
5778 | ||
0cd126b5 | 5779 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5780 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5781 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 5782 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
5783 | rc = -EIO; |
5784 | goto QAllEAsOut; | |
5785 | } | |
5786 | ||
f0d3868b | 5787 | /* account for ea list len */ |
6e462b9f | 5788 | list_len -= 4; |
f0d3868b JL |
5789 | temp_fea = ea_response_data->list; |
5790 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5791 | while (list_len > 0) { |
122ca007 | 5792 | unsigned int name_len; |
f0d3868b | 5793 | __u16 value_len; |
0cd126b5 | 5794 | |
6e462b9f | 5795 | list_len -= 4; |
f0d3868b | 5796 | temp_ptr += 4; |
0cd126b5 JL |
5797 | /* make sure we can read name_len and value_len */ |
5798 | if (list_len < 0) { | |
f96637be | 5799 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5800 | rc = -EIO; |
5801 | goto QAllEAsOut; | |
5802 | } | |
5803 | ||
5804 | name_len = temp_fea->name_len; | |
5805 | value_len = le16_to_cpu(temp_fea->value_len); | |
5806 | list_len -= name_len + 1 + value_len; | |
5807 | if (list_len < 0) { | |
f96637be | 5808 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5809 | rc = -EIO; |
5810 | goto QAllEAsOut; | |
5811 | } | |
5812 | ||
31c0519f | 5813 | if (ea_name) { |
91d065c4 | 5814 | if (ea_name_len == name_len && |
ac423446 | 5815 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
5816 | temp_ptr += name_len + 1; |
5817 | rc = value_len; | |
5818 | if (buf_size == 0) | |
5819 | goto QAllEAsOut; | |
5820 | if ((size_t)value_len > buf_size) { | |
5821 | rc = -ERANGE; | |
5822 | goto QAllEAsOut; | |
5823 | } | |
5824 | memcpy(EAData, temp_ptr, value_len); | |
5825 | goto QAllEAsOut; | |
5826 | } | |
f0d3868b | 5827 | } else { |
31c0519f JL |
5828 | /* account for prefix user. and trailing null */ |
5829 | rc += (5 + 1 + name_len); | |
5830 | if (rc < (int) buf_size) { | |
5831 | memcpy(EAData, "user.", 5); | |
5832 | EAData += 5; | |
5833 | memcpy(EAData, temp_ptr, name_len); | |
5834 | EAData += name_len; | |
5835 | /* null terminate name */ | |
5836 | *EAData = 0; | |
5837 | ++EAData; | |
5838 | } else if (buf_size == 0) { | |
5839 | /* skip copy - calc size only */ | |
5840 | } else { | |
5841 | /* stop before overrun buffer */ | |
5842 | rc = -ERANGE; | |
5843 | break; | |
5844 | } | |
1da177e4 | 5845 | } |
0cd126b5 | 5846 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5847 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5848 | } |
f0d3868b | 5849 | |
31c0519f JL |
5850 | /* didn't find the named attribute */ |
5851 | if (ea_name) | |
5852 | rc = -ENODATA; | |
5853 | ||
f0d3868b | 5854 | QAllEAsOut: |
0d817bc0 | 5855 | cifs_buf_release(pSMB); |
1da177e4 LT |
5856 | if (rc == -EAGAIN) |
5857 | goto QAllEAsRetry; | |
5858 | ||
5859 | return (ssize_t)rc; | |
5860 | } | |
5861 | ||
1da177e4 | 5862 | int |
6d5786a3 PS |
5863 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
5864 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 5865 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 5866 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5867 | { |
5868 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5869 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5870 | struct fealist *parm_data; | |
5871 | int name_len; | |
5872 | int rc = 0; | |
5873 | int bytes_returned = 0; | |
5874 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 5875 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5876 | |
f96637be | 5877 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
5878 | SetEARetry: |
5879 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5880 | (void **) &pSMBr); | |
5881 | if (rc) | |
5882 | return rc; | |
5883 | ||
5884 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5885 | name_len = | |
acbbb76a SF |
5886 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5887 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5888 | name_len++; /* trailing null */ |
5889 | name_len *= 2; | |
340625e6 RS |
5890 | } else { |
5891 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5892 | } |
5893 | ||
5894 | params = 6 + name_len; | |
5895 | ||
5896 | /* done calculating parms using name_len of file name, | |
5897 | now use name_len to calculate length of ea name | |
5898 | we are going to create in the inode xattrs */ | |
790fe579 | 5899 | if (ea_name == NULL) |
1da177e4 LT |
5900 | name_len = 0; |
5901 | else | |
50c2f753 | 5902 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5903 | |
dae5dbdb | 5904 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5905 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5906 | /* BB find max SMB PDU from sess */ |
5907 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5908 | pSMB->MaxSetupCount = 0; |
5909 | pSMB->Reserved = 0; | |
5910 | pSMB->Flags = 0; | |
5911 | pSMB->Timeout = 0; | |
5912 | pSMB->Reserved2 = 0; | |
5913 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5914 | InformationLevel) - 4; |
1da177e4 LT |
5915 | offset = param_offset + params; |
5916 | pSMB->InformationLevel = | |
5917 | cpu_to_le16(SMB_SET_FILE_EA); | |
5918 | ||
ade7db99 | 5919 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
5920 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
5921 | pSMB->DataOffset = cpu_to_le16(offset); | |
5922 | pSMB->SetupCount = 1; | |
5923 | pSMB->Reserved3 = 0; | |
5924 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5925 | byte_count = 3 /* pad */ + params + count; | |
5926 | pSMB->DataCount = cpu_to_le16(count); | |
5927 | parm_data->list_len = cpu_to_le32(count); | |
5928 | parm_data->list[0].EA_flags = 0; | |
5929 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5930 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5931 | /* EA names are always ASCII */ |
790fe579 | 5932 | if (ea_name) |
50c2f753 | 5933 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5934 | parm_data->list[0].name[name_len] = 0; |
5935 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5936 | /* caller ensures that ea_value_len is less than 64K but | |
5937 | we need to ensure that it fits within the smb */ | |
5938 | ||
50c2f753 SF |
5939 | /*BB add length check to see if it would fit in |
5940 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5941 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5942 | if (ea_value_len) | |
50c2f753 SF |
5943 | memcpy(parm_data->list[0].name+name_len+1, |
5944 | ea_value, ea_value_len); | |
1da177e4 LT |
5945 | |
5946 | pSMB->TotalDataCount = pSMB->DataCount; | |
5947 | pSMB->ParameterCount = cpu_to_le16(params); | |
5948 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5949 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5950 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5951 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5952 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5953 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5954 | if (rc) |
f96637be | 5955 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
5956 | |
5957 | cifs_buf_release(pSMB); | |
5958 | ||
5959 | if (rc == -EAGAIN) | |
5960 | goto SetEARetry; | |
5961 | ||
5962 | return rc; | |
5963 | } | |
1da177e4 | 5964 | #endif |