Commit | Line | Data |
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929be906 | 1 | // SPDX-License-Identifier: LGPL-2.1 |
1da177e4 | 2 | /* |
1da177e4 | 3 | * |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
12 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
13 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
14 | /* treated slightly differently for reconnection purposes since we never */ |
15 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
16 | |
17 | #include <linux/fs.h> | |
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 | 26 | #include "cifspdu.h" |
d08089f6 | 27 | #include "cifsfs.h" |
1da177e4 | 28 | #include "cifsglob.h" |
d0d66c44 | 29 | #include "cifsacl.h" |
1da177e4 LT |
30 | #include "cifsproto.h" |
31 | #include "cifs_unicode.h" | |
32 | #include "cifs_debug.h" | |
e28bc5b1 | 33 | #include "fscache.h" |
db223a59 | 34 | #include "smbdirect.h" |
08744015 PA |
35 | #ifdef CONFIG_CIFS_DFS_UPCALL |
36 | #include "dfs_cache.h" | |
37 | #endif | |
1da177e4 LT |
38 | |
39 | #ifdef CONFIG_CIFS_POSIX | |
40 | static struct { | |
41 | int index; | |
42 | char *name; | |
43 | } protocols[] = { | |
50c2f753 | 44 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 45 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
46 | {BAD_PROT, "\2"} |
47 | }; | |
48 | #else | |
49 | static struct { | |
50 | int index; | |
51 | char *name; | |
52 | } protocols[] = { | |
790fe579 | 53 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
54 | {BAD_PROT, "\2"} |
55 | }; | |
56 | #endif | |
57 | ||
3979877e SF |
58 | /* define the number of elements in the cifs dialect array */ |
59 | #ifdef CONFIG_CIFS_POSIX | |
3979877e | 60 | #define CIFS_NUM_PROT 2 |
3979877e | 61 | #else /* not posix */ |
3979877e | 62 | #define CIFS_NUM_PROT 1 |
3979877e SF |
63 | #endif /* CIFS_POSIX */ |
64 | ||
1da177e4 | 65 | |
9162ab20 JL |
66 | /* reconnect the socket, tcon, and smb session if needed */ |
67 | static int | |
96daf2b0 | 68 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 69 | { |
c4a5534a | 70 | int rc; |
96daf2b0 | 71 | struct cifs_ses *ses; |
9162ab20 JL |
72 | struct TCP_Server_Info *server; |
73 | struct nls_table *nls_codepage; | |
08744015 | 74 | int retries; |
9162ab20 JL |
75 | |
76 | /* | |
77 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
78 | * tcp and smb session status done differently for those three - in the | |
79 | * calling routine | |
80 | */ | |
81 | if (!tcon) | |
82 | return 0; | |
83 | ||
84 | ses = tcon->ses; | |
85 | server = ses->server; | |
86 | ||
87 | /* | |
88 | * only tree disconnect, open, and write, (and ulogoff which does not | |
89 | * have tcon) are allowed as we start force umount | |
90 | */ | |
d7d7a66a | 91 | spin_lock(&tcon->tc_lock); |
fdf59eb5 | 92 | if (tcon->status == TID_EXITING) { |
9162ab20 JL |
93 | if (smb_command != SMB_COM_WRITE_ANDX && |
94 | smb_command != SMB_COM_OPEN_ANDX && | |
95 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
d7d7a66a | 96 | spin_unlock(&tcon->tc_lock); |
f96637be JP |
97 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
98 | smb_command); | |
9162ab20 JL |
99 | return -ENODEV; |
100 | } | |
101 | } | |
d7d7a66a | 102 | spin_unlock(&tcon->tc_lock); |
9162ab20 | 103 | |
08744015 PA |
104 | retries = server->nr_targets; |
105 | ||
9162ab20 | 106 | /* |
08744015 PA |
107 | * Give demultiplex thread up to 10 seconds to each target available for |
108 | * reconnect -- should be greater than cifs socket timeout which is 7 | |
109 | * seconds. | |
9162ab20 JL |
110 | */ |
111 | while (server->tcpStatus == CifsNeedReconnect) { | |
7ffbe655 PA |
112 | rc = wait_event_interruptible_timeout(server->response_q, |
113 | (server->tcpStatus != CifsNeedReconnect), | |
114 | 10 * HZ); | |
115 | if (rc < 0) { | |
a0a3036b JP |
116 | cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n", |
117 | __func__); | |
7ffbe655 PA |
118 | return -ERESTARTSYS; |
119 | } | |
9162ab20 | 120 | |
fd88ce93 | 121 | /* are we still trying to reconnect? */ |
d7d7a66a | 122 | spin_lock(&server->srv_lock); |
080dc5e5 | 123 | if (server->tcpStatus != CifsNeedReconnect) { |
d7d7a66a | 124 | spin_unlock(&server->srv_lock); |
9162ab20 | 125 | break; |
080dc5e5 | 126 | } |
d7d7a66a | 127 | spin_unlock(&server->srv_lock); |
9162ab20 | 128 | |
09c40b15 | 129 | if (retries && --retries) |
08744015 PA |
130 | continue; |
131 | ||
9162ab20 JL |
132 | /* |
133 | * on "soft" mounts we wait once. Hard mounts keep | |
134 | * retrying until process is killed or server comes | |
135 | * back on-line | |
136 | */ | |
d402539b | 137 | if (!tcon->retry) { |
f96637be | 138 | cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
9162ab20 JL |
139 | return -EHOSTDOWN; |
140 | } | |
08744015 | 141 | retries = server->nr_targets; |
9162ab20 JL |
142 | } |
143 | ||
d1a931ce SP |
144 | spin_lock(&ses->chan_lock); |
145 | if (!cifs_chan_needs_reconnect(ses, server) && !tcon->need_reconnect) { | |
146 | spin_unlock(&ses->chan_lock); | |
9162ab20 | 147 | return 0; |
d1a931ce SP |
148 | } |
149 | spin_unlock(&ses->chan_lock); | |
9162ab20 JL |
150 | |
151 | nls_codepage = load_nls_default(); | |
152 | ||
76e75270 SC |
153 | /* |
154 | * Recheck after acquire mutex. If another thread is negotiating | |
155 | * and the server never sends an answer the socket will be closed | |
156 | * and tcpStatus set to reconnect. | |
157 | */ | |
d7d7a66a | 158 | spin_lock(&server->srv_lock); |
76e75270 | 159 | if (server->tcpStatus == CifsNeedReconnect) { |
d7d7a66a | 160 | spin_unlock(&server->srv_lock); |
76e75270 | 161 | rc = -EHOSTDOWN; |
76e75270 SC |
162 | goto out; |
163 | } | |
d7d7a66a | 164 | spin_unlock(&server->srv_lock); |
76e75270 | 165 | |
d1a931ce SP |
166 | /* |
167 | * need to prevent multiple threads trying to simultaneously | |
168 | * reconnect the same SMB session | |
169 | */ | |
170 | spin_lock(&ses->chan_lock); | |
171 | if (!cifs_chan_needs_reconnect(ses, server)) { | |
172 | spin_unlock(&ses->chan_lock); | |
f486ef8e SP |
173 | |
174 | /* this means that we only need to tree connect */ | |
d1a931ce SP |
175 | if (tcon->need_reconnect) |
176 | goto skip_sess_setup; | |
177 | ||
178 | rc = -EHOSTDOWN; | |
d1a931ce SP |
179 | goto out; |
180 | } | |
181 | spin_unlock(&ses->chan_lock); | |
182 | ||
73f9bfbe | 183 | mutex_lock(&ses->session_mutex); |
f486ef8e | 184 | rc = cifs_negotiate_protocol(0, ses, server); |
d1a931ce | 185 | if (!rc) |
f486ef8e | 186 | rc = cifs_setup_session(0, ses, server, nls_codepage); |
9162ab20 JL |
187 | |
188 | /* do we need to reconnect tcon? */ | |
189 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 190 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
191 | goto out; |
192 | } | |
193 | ||
d1a931ce | 194 | skip_sess_setup: |
aa24d1e9 | 195 | cifs_mark_open_files_invalid(tcon); |
565674d6 | 196 | rc = cifs_tree_connect(0, tcon, nls_codepage); |
d7b619cf | 197 | mutex_unlock(&ses->session_mutex); |
f96637be | 198 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 199 | |
c318e6c2 | 200 | if (rc) { |
a0a3036b | 201 | pr_warn_once("reconnect tcon failed rc = %d\n", rc); |
9162ab20 | 202 | goto out; |
c318e6c2 | 203 | } |
9162ab20 | 204 | |
9162ab20 JL |
205 | atomic_inc(&tconInfoReconnectCount); |
206 | ||
207 | /* tell server Unix caps we support */ | |
864138cb | 208 | if (cap_unix(ses)) |
9162ab20 JL |
209 | reset_cifs_unix_caps(0, tcon, NULL, NULL); |
210 | ||
211 | /* | |
212 | * Removed call to reopen open files here. It is safer (and faster) to | |
213 | * reopen files one at a time as needed in read and write. | |
214 | * | |
215 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
216 | */ | |
217 | ||
218 | out: | |
219 | /* | |
220 | * Check if handle based operation so we know whether we can continue | |
221 | * or not without returning to caller to reset file handle | |
222 | */ | |
223 | switch (smb_command) { | |
224 | case SMB_COM_READ_ANDX: | |
225 | case SMB_COM_WRITE_ANDX: | |
226 | case SMB_COM_CLOSE: | |
227 | case SMB_COM_FIND_CLOSE2: | |
228 | case SMB_COM_LOCKING_ANDX: | |
229 | rc = -EAGAIN; | |
230 | } | |
231 | ||
232 | unload_nls(nls_codepage); | |
233 | return rc; | |
234 | } | |
235 | ||
ad7a2926 SF |
236 | /* Allocate and return pointer to an SMB request buffer, and set basic |
237 | SMB information in the SMB header. If the return code is zero, this | |
238 | function must have filled in request_buf pointer */ | |
1da177e4 | 239 | static int |
96daf2b0 | 240 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 241 | void **request_buf) |
1da177e4 | 242 | { |
f569599a | 243 | int rc; |
1da177e4 | 244 | |
9162ab20 | 245 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 246 | if (rc) |
1da177e4 LT |
247 | return rc; |
248 | ||
249 | *request_buf = cifs_small_buf_get(); | |
250 | if (*request_buf == NULL) { | |
251 | /* BB should we add a retry in here if not a writepage? */ | |
252 | return -ENOMEM; | |
253 | } | |
254 | ||
63135e08 | 255 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 256 | tcon, wct); |
1da177e4 | 257 | |
790fe579 SF |
258 | if (tcon != NULL) |
259 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 260 | |
f569599a | 261 | return 0; |
5815449d SF |
262 | } |
263 | ||
12b3b8ff | 264 | int |
50c2f753 | 265 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 266 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
267 | { |
268 | int rc; | |
50c2f753 | 269 | struct smb_hdr *buffer; |
12b3b8ff | 270 | |
5815449d | 271 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 272 | if (rc) |
12b3b8ff SF |
273 | return rc; |
274 | ||
04fdabe1 | 275 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 276 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
277 | if (ses->capabilities & CAP_UNICODE) |
278 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 279 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
280 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
281 | ||
282 | /* uid, tid can stay at zero as set in header assemble */ | |
283 | ||
50c2f753 | 284 | /* BB add support for turning on the signing when |
12b3b8ff SF |
285 | this function is used after 1st of session setup requests */ |
286 | ||
287 | return rc; | |
288 | } | |
1da177e4 LT |
289 | |
290 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
291 | static int | |
96daf2b0 | 292 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 293 | void **request_buf, void **response_buf) |
1da177e4 | 294 | { |
1da177e4 LT |
295 | *request_buf = cifs_buf_get(); |
296 | if (*request_buf == NULL) { | |
297 | /* BB should we add a retry in here if not a writepage? */ | |
298 | return -ENOMEM; | |
299 | } | |
300 | /* Although the original thought was we needed the response buf for */ | |
301 | /* potential retries of smb operations it turns out we can determine */ | |
302 | /* from the mid flags when the request buffer can be resent without */ | |
303 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 304 | if (response_buf) |
50c2f753 | 305 | *response_buf = *request_buf; |
1da177e4 LT |
306 | |
307 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 308 | wct); |
1da177e4 | 309 | |
790fe579 SF |
310 | if (tcon != NULL) |
311 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 312 | |
f569599a JL |
313 | return 0; |
314 | } | |
315 | ||
316 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
317 | static int | |
96daf2b0 | 318 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
319 | void **request_buf, void **response_buf) |
320 | { | |
321 | int rc; | |
322 | ||
323 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
324 | if (rc) | |
325 | return rc; | |
326 | ||
327 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
328 | } | |
329 | ||
330 | static int | |
96daf2b0 | 331 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
332 | void **request_buf, void **response_buf) |
333 | { | |
d1a931ce SP |
334 | spin_lock(&tcon->ses->chan_lock); |
335 | if (cifs_chan_needs_reconnect(tcon->ses, tcon->ses->server) || | |
336 | tcon->need_reconnect) { | |
337 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a | 338 | return -EHOSTDOWN; |
d1a931ce SP |
339 | } |
340 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a JL |
341 | |
342 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
343 | } |
344 | ||
50c2f753 | 345 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 346 | { |
12df83c9 JL |
347 | unsigned int total_size; |
348 | ||
349 | /* check for plausible wct */ | |
350 | if (pSMB->hdr.WordCount < 10) | |
351 | goto vt2_err; | |
1da177e4 | 352 | |
1da177e4 | 353 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
354 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
355 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
356 | goto vt2_err; | |
357 | ||
12df83c9 JL |
358 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
359 | if (total_size >= 512) | |
360 | goto vt2_err; | |
361 | ||
fd5707e1 JL |
362 | /* check that bcc is at least as big as parms + data, and that it is |
363 | * less than negotiated smb buffer | |
364 | */ | |
12df83c9 JL |
365 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
366 | if (total_size > get_bcc(&pSMB->hdr) || | |
367 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
368 | goto vt2_err; | |
369 | ||
370 | return 0; | |
371 | vt2_err: | |
50c2f753 | 372 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 373 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 374 | return -EINVAL; |
1da177e4 | 375 | } |
690c522f | 376 | |
31d9e2bd | 377 | static int |
3f618223 | 378 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
379 | { |
380 | int rc = 0; | |
381 | u16 count; | |
382 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 383 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
384 | |
385 | count = get_bcc(&pSMBr->hdr); | |
386 | if (count < SMB1_CLIENT_GUID_SIZE) | |
387 | return -EIO; | |
388 | ||
389 | spin_lock(&cifs_tcp_ses_lock); | |
390 | if (server->srv_count > 1) { | |
391 | spin_unlock(&cifs_tcp_ses_lock); | |
392 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
393 | cifs_dbg(FYI, "server UID changed\n"); | |
394 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
395 | } | |
396 | } else { | |
397 | spin_unlock(&cifs_tcp_ses_lock); | |
398 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
399 | } | |
400 | ||
401 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 402 | server->sec_ntlmssp = true; |
31d9e2bd JL |
403 | } else { |
404 | count -= SMB1_CLIENT_GUID_SIZE; | |
405 | rc = decode_negTokenInit( | |
406 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
407 | if (rc != 1) | |
408 | return -EINVAL; | |
31d9e2bd JL |
409 | } |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
9193400b | 414 | static bool |
3f618223 | 415 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 416 | { |
3f618223 JL |
417 | switch (sectype) { |
418 | case RawNTLMSSP: | |
419 | case Kerberos: | |
9193400b | 420 | return true; |
3f618223 JL |
421 | case Unspecified: |
422 | if (global_secflags & | |
423 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
424 | return true; | |
df561f66 | 425 | fallthrough; |
3f618223 JL |
426 | default: |
427 | return false; | |
428 | } | |
9193400b JL |
429 | } |
430 | ||
1da177e4 | 431 | int |
f486ef8e SP |
432 | CIFSSMBNegotiate(const unsigned int xid, |
433 | struct cifs_ses *ses, | |
434 | struct TCP_Server_Info *server) | |
1da177e4 LT |
435 | { |
436 | NEGOTIATE_REQ *pSMB; | |
437 | NEGOTIATE_RSP *pSMBr; | |
438 | int rc = 0; | |
439 | int bytes_returned; | |
3979877e | 440 | int i; |
1da177e4 LT |
441 | u16 count; |
442 | ||
3534b850 JL |
443 | if (!server) { |
444 | WARN(1, "%s: server is NULL!\n", __func__); | |
445 | return -EIO; | |
1da177e4 | 446 | } |
3534b850 | 447 | |
1da177e4 LT |
448 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
449 | (void **) &pSMB, (void **) &pSMBr); | |
450 | if (rc) | |
451 | return rc; | |
750d1151 | 452 | |
88257360 | 453 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 454 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 455 | |
3f618223 | 456 | if (should_set_ext_sec_flag(ses->sectype)) { |
a0a3036b | 457 | cifs_dbg(FYI, "Requesting extended security\n"); |
ac683924 SF |
458 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
459 | } | |
50c2f753 | 460 | |
3979877e | 461 | count = 0; |
bcfb84a9 SR |
462 | /* |
463 | * We know that all the name entries in the protocols array | |
464 | * are short (< 16 bytes anyway) and are NUL terminated. | |
465 | */ | |
50c2f753 | 466 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
bcfb84a9 SR |
467 | size_t len = strlen(protocols[i].name) + 1; |
468 | ||
943deb60 | 469 | memcpy(&pSMB->DialectsArray[count], protocols[i].name, len); |
bcfb84a9 | 470 | count += len; |
3979877e | 471 | } |
be8e3b00 | 472 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
473 | pSMB->ByteCount = cpu_to_le16(count); |
474 | ||
475 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
476 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 477 | if (rc != 0) |
254e55ed SF |
478 | goto neg_err_exit; |
479 | ||
9bf67e51 | 480 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 481 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 482 | /* Check wct = 1 error case */ |
76a3c92e | 483 | if ((pSMBr->hdr.WordCount <= 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 484 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 485 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
486 | could not negotiate a common dialect */ |
487 | rc = -EOPNOTSUPP; | |
488 | goto neg_err_exit; | |
790fe579 | 489 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
490 | /* unknown wct */ |
491 | rc = -EOPNOTSUPP; | |
492 | goto neg_err_exit; | |
493 | } | |
2190eca1 JL |
494 | /* else wct == 17, NTLM or better */ |
495 | ||
96daf2b0 SF |
496 | server->sec_mode = pSMBr->SecurityMode; |
497 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 498 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 499 | |
254e55ed SF |
500 | /* one byte, so no need to convert this or EncryptionKeyLen from |
501 | little endian */ | |
10b9b98e PS |
502 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
503 | cifs_max_pending); | |
45275789 | 504 | set_credits(server, server->maxReq); |
254e55ed | 505 | /* probably no need to store and check maxvcs */ |
c974befa | 506 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
704528d8 | 507 | /* set up max_read for readahead check */ |
1f641d94 | 508 | server->max_read = server->maxBuf; |
eca6acf9 | 509 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 510 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 511 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
512 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
513 | server->timeAdj *= 60; | |
31d9e2bd | 514 | |
e598d1d8 JL |
515 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
516 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 517 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 518 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
519 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
520 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 521 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 522 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 523 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 524 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
525 | } else { |
526 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 527 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 528 | } |
254e55ed | 529 | |
9ddec561 | 530 | if (!rc) |
38d77c50 | 531 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 532 | neg_err_exit: |
4a6d87f1 | 533 | cifs_buf_release(pSMB); |
254e55ed | 534 | |
f96637be | 535 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
536 | return rc; |
537 | } | |
538 | ||
539 | int | |
2e6e02ab | 540 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
541 | { |
542 | struct smb_hdr *smb_buffer; | |
1da177e4 | 543 | int rc = 0; |
1da177e4 | 544 | |
f96637be | 545 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 546 | |
f1987b44 JL |
547 | /* BB: do we need to check this? These should never be NULL. */ |
548 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
549 | return -EIO; | |
1da177e4 | 550 | |
f1987b44 JL |
551 | /* |
552 | * No need to return error on this operation if tid invalidated and | |
553 | * closed on server already e.g. due to tcp session crashing. Also, | |
554 | * the tcon is no longer on the list, so no need to take lock before | |
555 | * checking this. | |
556 | */ | |
d1a931ce SP |
557 | spin_lock(&tcon->ses->chan_lock); |
558 | if ((tcon->need_reconnect) || CIFS_ALL_CHANS_NEED_RECONNECT(tcon->ses)) { | |
559 | spin_unlock(&tcon->ses->chan_lock); | |
560 | return -EIO; | |
561 | } | |
562 | spin_unlock(&tcon->ses->chan_lock); | |
1da177e4 | 563 | |
50c2f753 | 564 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 565 | (void **)&smb_buffer); |
f1987b44 | 566 | if (rc) |
1da177e4 | 567 | return rc; |
133672ef | 568 | |
792af7b0 | 569 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 570 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 571 | if (rc) |
f96637be | 572 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 573 | |
50c2f753 | 574 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 575 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
576 | if (rc == -EAGAIN) |
577 | rc = 0; | |
578 | ||
579 | return rc; | |
580 | } | |
581 | ||
766fdbb5 JL |
582 | /* |
583 | * This is a no-op for now. We're not really interested in the reply, but | |
584 | * rather in the fact that the server sent one and that server->lstrp | |
585 | * gets updated. | |
586 | * | |
587 | * FIXME: maybe we should consider checking that the reply matches request? | |
588 | */ | |
589 | static void | |
590 | cifs_echo_callback(struct mid_q_entry *mid) | |
591 | { | |
592 | struct TCP_Server_Info *server = mid->callback_data; | |
34f4deb7 | 593 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
766fdbb5 | 594 | |
70f08f91 | 595 | release_mid(mid); |
34f4deb7 | 596 | add_credits(server, &credits, CIFS_ECHO_OP); |
766fdbb5 JL |
597 | } |
598 | ||
599 | int | |
600 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
601 | { | |
602 | ECHO_REQ *smb; | |
603 | int rc = 0; | |
738f9de5 PS |
604 | struct kvec iov[2]; |
605 | struct smb_rqst rqst = { .rq_iov = iov, | |
606 | .rq_nvec = 2 }; | |
766fdbb5 | 607 | |
f96637be | 608 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
609 | |
610 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
611 | if (rc) | |
612 | return rc; | |
613 | ||
26c9cb66 SF |
614 | if (server->capabilities & CAP_UNICODE) |
615 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
616 | ||
766fdbb5 | 617 | /* set up echo request */ |
5443d130 | 618 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
619 | smb->hdr.WordCount = 1; |
620 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 621 | put_bcc(1, &smb->hdr); |
766fdbb5 | 622 | smb->Data[0] = 'a'; |
be8e3b00 | 623 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
624 | |
625 | iov[0].iov_len = 4; | |
626 | iov[0].iov_base = smb; | |
627 | iov[1].iov_len = get_rfc1002_length(smb); | |
628 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 629 | |
9b7c18a2 | 630 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
392e1c5d | 631 | server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL); |
766fdbb5 | 632 | if (rc) |
f96637be | 633 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
634 | |
635 | cifs_small_buf_release(smb); | |
636 | ||
637 | return rc; | |
638 | } | |
639 | ||
1da177e4 | 640 | int |
58c45c58 | 641 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 642 | { |
1da177e4 LT |
643 | LOGOFF_ANDX_REQ *pSMB; |
644 | int rc = 0; | |
1da177e4 | 645 | |
f96637be | 646 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 647 | |
14fbf50d JL |
648 | /* |
649 | * BB: do we need to check validity of ses and server? They should | |
650 | * always be valid since we have an active reference. If not, that | |
651 | * should probably be a BUG() | |
652 | */ | |
653 | if (!ses || !ses->server) | |
3b795210 SF |
654 | return -EIO; |
655 | ||
d7b619cf | 656 | mutex_lock(&ses->session_mutex); |
d1a931ce SP |
657 | spin_lock(&ses->chan_lock); |
658 | if (CIFS_ALL_CHANS_NEED_RECONNECT(ses)) { | |
659 | spin_unlock(&ses->chan_lock); | |
3b795210 SF |
660 | goto session_already_dead; /* no need to send SMBlogoff if uid |
661 | already closed due to reconnect */ | |
d1a931ce SP |
662 | } |
663 | spin_unlock(&ses->chan_lock); | |
664 | ||
1da177e4 LT |
665 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
666 | if (rc) { | |
d7b619cf | 667 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
668 | return rc; |
669 | } | |
670 | ||
88257360 | 671 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 672 | |
38d77c50 JL |
673 | if (ses->server->sign) |
674 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
675 | |
676 | pSMB->hdr.Uid = ses->Suid; | |
677 | ||
678 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 679 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 680 | cifs_small_buf_release(pSMB); |
3b795210 | 681 | session_already_dead: |
d7b619cf | 682 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
683 | |
684 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 685 | since server closed smb session, no sense reporting |
1da177e4 LT |
686 | error */ |
687 | if (rc == -EAGAIN) | |
688 | rc = 0; | |
689 | return rc; | |
690 | } | |
691 | ||
2d785a50 | 692 | int |
6d5786a3 PS |
693 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
694 | const char *fileName, __u16 type, | |
695 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
696 | { |
697 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
698 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
699 | struct unlink_psx_rq *pRqD; | |
700 | int name_len; | |
701 | int rc = 0; | |
702 | int bytes_returned = 0; | |
703 | __u16 params, param_offset, offset, byte_count; | |
704 | ||
f96637be | 705 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
706 | PsxDelete: |
707 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
708 | (void **) &pSMBr); | |
709 | if (rc) | |
710 | return rc; | |
711 | ||
712 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
713 | name_len = | |
acbbb76a SF |
714 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
715 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
716 | name_len++; /* trailing null */ |
717 | name_len *= 2; | |
340625e6 RS |
718 | } else { |
719 | name_len = copy_path_name(pSMB->FileName, fileName); | |
2d785a50 SF |
720 | } |
721 | ||
722 | params = 6 + name_len; | |
723 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
724 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
725 | pSMB->MaxSetupCount = 0; | |
726 | pSMB->Reserved = 0; | |
727 | pSMB->Flags = 0; | |
728 | pSMB->Timeout = 0; | |
729 | pSMB->Reserved2 = 0; | |
730 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
731 | InformationLevel) - 4; | |
732 | offset = param_offset + params; | |
733 | ||
7b09d4e0 SF |
734 | /* Setup pointer to Request Data (inode type). |
735 | * Note that SMB offsets are from the beginning of SMB which is 4 bytes | |
736 | * in, after RFC1001 field | |
737 | */ | |
738 | pRqD = (struct unlink_psx_rq *)((char *)(pSMB) + offset + 4); | |
2d785a50 SF |
739 | pRqD->type = cpu_to_le16(type); |
740 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
741 | pSMB->DataOffset = cpu_to_le16(offset); | |
742 | pSMB->SetupCount = 1; | |
743 | pSMB->Reserved3 = 0; | |
744 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
745 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
746 | ||
747 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
748 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
749 | pSMB->ParameterCount = cpu_to_le16(params); | |
750 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
751 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
752 | pSMB->Reserved4 = 0; | |
be8e3b00 | 753 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
754 | pSMB->ByteCount = cpu_to_le16(byte_count); |
755 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
756 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 757 | if (rc) |
f96637be | 758 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
759 | cifs_buf_release(pSMB); |
760 | ||
44c58186 | 761 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
762 | |
763 | if (rc == -EAGAIN) | |
764 | goto PsxDelete; | |
765 | ||
766 | return rc; | |
767 | } | |
768 | ||
1da177e4 | 769 | int |
ed6875e0 PS |
770 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
771 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
772 | { |
773 | DELETE_FILE_REQ *pSMB = NULL; | |
774 | DELETE_FILE_RSP *pSMBr = NULL; | |
775 | int rc = 0; | |
776 | int bytes_returned; | |
777 | int name_len; | |
2baa2682 | 778 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
779 | |
780 | DelFileRetry: | |
781 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
782 | (void **) &pSMBr); | |
783 | if (rc) | |
784 | return rc; | |
785 | ||
786 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
787 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
788 | PATH_MAX, cifs_sb->local_nls, | |
789 | remap); | |
1da177e4 LT |
790 | name_len++; /* trailing null */ |
791 | name_len *= 2; | |
340625e6 RS |
792 | } else { |
793 | name_len = copy_path_name(pSMB->fileName, name); | |
1da177e4 LT |
794 | } |
795 | pSMB->SearchAttributes = | |
796 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
797 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 798 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
799 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
800 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
801 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 802 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 803 | if (rc) |
f96637be | 804 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
805 | |
806 | cifs_buf_release(pSMB); | |
807 | if (rc == -EAGAIN) | |
808 | goto DelFileRetry; | |
809 | ||
810 | return rc; | |
811 | } | |
812 | ||
813 | int | |
f958ca5d PS |
814 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
815 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
816 | { |
817 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
818 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
819 | int rc = 0; | |
820 | int bytes_returned; | |
821 | int name_len; | |
2baa2682 | 822 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 823 | |
f96637be | 824 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
825 | RmDirRetry: |
826 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
827 | (void **) &pSMBr); | |
828 | if (rc) | |
829 | return rc; | |
830 | ||
831 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
832 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
833 | PATH_MAX, cifs_sb->local_nls, | |
834 | remap); | |
1da177e4 LT |
835 | name_len++; /* trailing null */ |
836 | name_len *= 2; | |
340625e6 RS |
837 | } else { |
838 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
839 | } |
840 | ||
841 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 842 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
843 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
844 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
845 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 846 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 847 | if (rc) |
f96637be | 848 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
849 | |
850 | cifs_buf_release(pSMB); | |
851 | if (rc == -EAGAIN) | |
852 | goto RmDirRetry; | |
853 | return rc; | |
854 | } | |
855 | ||
856 | int | |
c3ca78e2 SF |
857 | CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode, |
858 | struct cifs_tcon *tcon, const char *name, | |
f436720e | 859 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
860 | { |
861 | int rc = 0; | |
862 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
863 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
864 | int bytes_returned; | |
865 | int name_len; | |
2baa2682 | 866 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 867 | |
f96637be | 868 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
869 | MkDirRetry: |
870 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
871 | (void **) &pSMBr); | |
872 | if (rc) | |
873 | return rc; | |
874 | ||
875 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 876 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
877 | PATH_MAX, cifs_sb->local_nls, |
878 | remap); | |
1da177e4 LT |
879 | name_len++; /* trailing null */ |
880 | name_len *= 2; | |
340625e6 RS |
881 | } else { |
882 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
883 | } |
884 | ||
885 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 886 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
887 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
888 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
889 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 890 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 891 | if (rc) |
f96637be | 892 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 893 | |
1da177e4 LT |
894 | cifs_buf_release(pSMB); |
895 | if (rc == -EAGAIN) | |
896 | goto MkDirRetry; | |
897 | return rc; | |
898 | } | |
899 | ||
2dd29d31 | 900 | int |
6d5786a3 PS |
901 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
902 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
903 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
904 | const char *name, const struct nls_table *nls_codepage, | |
905 | int remap) | |
2dd29d31 SF |
906 | { |
907 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
908 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
909 | int name_len; | |
910 | int rc = 0; | |
911 | int bytes_returned = 0; | |
2dd29d31 | 912 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
913 | OPEN_PSX_REQ *pdata; |
914 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 915 | |
f96637be | 916 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
917 | PsxCreat: |
918 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
919 | (void **) &pSMBr); | |
920 | if (rc) | |
921 | return rc; | |
922 | ||
923 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
924 | name_len = | |
acbbb76a SF |
925 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
926 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
927 | name_len++; /* trailing null */ |
928 | name_len *= 2; | |
340625e6 RS |
929 | } else { |
930 | name_len = copy_path_name(pSMB->FileName, name); | |
2dd29d31 SF |
931 | } |
932 | ||
933 | params = 6 + name_len; | |
934 | count = sizeof(OPEN_PSX_REQ); | |
935 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
936 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
937 | pSMB->MaxSetupCount = 0; | |
938 | pSMB->Reserved = 0; | |
939 | pSMB->Flags = 0; | |
940 | pSMB->Timeout = 0; | |
941 | pSMB->Reserved2 = 0; | |
942 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 943 | InformationLevel) - 4; |
2dd29d31 | 944 | offset = param_offset + params; |
21a64910 SF |
945 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
946 | pdata = (OPEN_PSX_REQ *)((char *)(pSMB) + offset + 4); | |
8f2376ad | 947 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 948 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 949 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
950 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
951 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
952 | pSMB->DataOffset = cpu_to_le16(offset); | |
953 | pSMB->SetupCount = 1; | |
954 | pSMB->Reserved3 = 0; | |
955 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
956 | byte_count = 3 /* pad */ + params + count; | |
957 | ||
958 | pSMB->DataCount = cpu_to_le16(count); | |
959 | pSMB->ParameterCount = cpu_to_le16(params); | |
960 | pSMB->TotalDataCount = pSMB->DataCount; | |
961 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
962 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
963 | pSMB->Reserved4 = 0; | |
be8e3b00 | 964 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
965 | pSMB->ByteCount = cpu_to_le16(byte_count); |
966 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
967 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
968 | if (rc) { | |
f96637be | 969 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
970 | goto psx_create_err; |
971 | } | |
972 | ||
f96637be | 973 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
974 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
975 | ||
820a803f | 976 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
977 | rc = -EIO; /* bad smb */ |
978 | goto psx_create_err; | |
979 | } | |
980 | ||
981 | /* copy return information to pRetData */ | |
50c2f753 | 982 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 983 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 984 | |
2dd29d31 | 985 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 986 | if (netfid) |
2dd29d31 SF |
987 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
988 | /* Let caller know file was created so we can set the mode. */ | |
989 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 990 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
991 | *pOplock |= CIFS_CREATE_ACTION; |
992 | /* check to make sure response data is there */ | |
8f2376ad CG |
993 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
994 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 995 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 996 | } else { |
820a803f | 997 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 998 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 999 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 1000 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1001 | goto psx_create_err; |
1002 | } | |
50c2f753 | 1003 | memcpy((char *) pRetData, |
cbac3cba | 1004 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1005 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1006 | } |
2dd29d31 SF |
1007 | |
1008 | psx_create_err: | |
1009 | cifs_buf_release(pSMB); | |
1010 | ||
65bc98b0 | 1011 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1012 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1013 | else |
44c58186 | 1014 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1015 | |
1016 | if (rc == -EAGAIN) | |
1017 | goto PsxCreat; | |
1018 | ||
50c2f753 | 1019 | return rc; |
2dd29d31 SF |
1020 | } |
1021 | ||
a9d02ad4 SF |
1022 | static __u16 convert_disposition(int disposition) |
1023 | { | |
1024 | __u16 ofun = 0; | |
1025 | ||
1026 | switch (disposition) { | |
1027 | case FILE_SUPERSEDE: | |
1028 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1029 | break; | |
1030 | case FILE_OPEN: | |
1031 | ofun = SMBOPEN_OAPPEND; | |
1032 | break; | |
1033 | case FILE_CREATE: | |
1034 | ofun = SMBOPEN_OCREATE; | |
1035 | break; | |
1036 | case FILE_OPEN_IF: | |
1037 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1038 | break; | |
1039 | case FILE_OVERWRITE: | |
1040 | ofun = SMBOPEN_OTRUNC; | |
1041 | break; | |
1042 | case FILE_OVERWRITE_IF: | |
1043 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1044 | break; | |
1045 | default: | |
f96637be | 1046 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1047 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1048 | } | |
1049 | return ofun; | |
1050 | } | |
1051 | ||
35fc37d5 JL |
1052 | static int |
1053 | access_flags_to_smbopen_mode(const int access_flags) | |
1054 | { | |
1055 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1056 | ||
1057 | if (masked_flags == GENERIC_READ) | |
1058 | return SMBOPEN_READ; | |
1059 | else if (masked_flags == GENERIC_WRITE) | |
1060 | return SMBOPEN_WRITE; | |
1061 | ||
1062 | /* just go for read/write */ | |
1063 | return SMBOPEN_READWRITE; | |
1064 | } | |
1065 | ||
a9d02ad4 | 1066 | int |
6d5786a3 | 1067 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1068 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1069 | const int access_flags, const int create_options, __u16 *netfid, |
1070 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1071 | const struct nls_table *nls_codepage, int remap) |
1072 | { | |
032e091d | 1073 | int rc; |
a9d02ad4 SF |
1074 | OPENX_REQ *pSMB = NULL; |
1075 | OPENX_RSP *pSMBr = NULL; | |
1076 | int bytes_returned; | |
1077 | int name_len; | |
1078 | __u16 count; | |
1079 | ||
1080 | OldOpenRetry: | |
1081 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1082 | (void **) &pSMBr); | |
1083 | if (rc) | |
1084 | return rc; | |
1085 | ||
1086 | pSMB->AndXCommand = 0xFF; /* none */ | |
1087 | ||
1088 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1089 | count = 1; /* account for one byte pad to word boundary */ | |
1090 | name_len = | |
acbbb76a SF |
1091 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1092 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1093 | name_len++; /* trailing null */ |
1094 | name_len *= 2; | |
340625e6 | 1095 | } else { |
a9d02ad4 | 1096 | count = 0; /* no pad */ |
340625e6 | 1097 | name_len = copy_path_name(pSMB->fileName, fileName); |
a9d02ad4 SF |
1098 | } |
1099 | if (*pOplock & REQ_OPLOCK) | |
1100 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1101 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1102 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1103 | |
a9d02ad4 | 1104 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1105 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1106 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1107 | /* set file as system file if special file such | |
1108 | as fifo and server expecting SFU style and | |
1109 | no Unix extensions */ | |
1110 | ||
790fe579 SF |
1111 | if (create_options & CREATE_OPTION_SPECIAL) |
1112 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1113 | else /* BB FIXME BB */ |
1114 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1115 | |
67750fb9 JL |
1116 | if (create_options & CREATE_OPTION_READONLY) |
1117 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1118 | |
1119 | /* BB FIXME BB */ | |
50c2f753 SF |
1120 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1121 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1122 | /* BB FIXME END BB */ |
3e87d803 SF |
1123 | |
1124 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1125 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1126 | count += name_len; |
be8e3b00 | 1127 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1128 | |
1129 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1130 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1131 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1132 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1133 | if (rc) { |
f96637be | 1134 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1135 | } else { |
1136 | /* BB verify if wct == 15 */ | |
1137 | ||
582d21e5 | 1138 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1139 | |
1140 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1141 | /* Let caller know file was created so we can set the mode. */ | |
1142 | /* Do we care about the CreateAction in any other cases? */ | |
1143 | /* BB FIXME BB */ | |
790fe579 | 1144 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1145 | *pOplock |= CIFS_CREATE_ACTION; */ |
1146 | /* BB FIXME END */ | |
1147 | ||
790fe579 | 1148 | if (pfile_info) { |
a9d02ad4 SF |
1149 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1150 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1151 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1152 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1153 | pfile_info->Attributes = |
50c2f753 | 1154 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1155 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1156 | pfile_info->AllocationSize = |
1157 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1158 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1159 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1160 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1161 | } |
1162 | } | |
1163 | ||
1164 | cifs_buf_release(pSMB); | |
1165 | if (rc == -EAGAIN) | |
1166 | goto OldOpenRetry; | |
1167 | return rc; | |
1168 | } | |
1169 | ||
1da177e4 | 1170 | int |
d81b8a40 PS |
1171 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1172 | FILE_ALL_INFO *buf) | |
1da177e4 | 1173 | { |
1afdea4f | 1174 | int rc; |
9bf4fa01 PS |
1175 | OPEN_REQ *req = NULL; |
1176 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1177 | int bytes_returned; |
1178 | int name_len; | |
1179 | __u16 count; | |
d81b8a40 PS |
1180 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1181 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1182 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1183 | const struct nls_table *nls = cifs_sb->local_nls; |
1184 | int create_options = oparms->create_options; | |
1185 | int desired_access = oparms->desired_access; | |
1186 | int disposition = oparms->disposition; | |
1187 | const char *path = oparms->path; | |
1da177e4 LT |
1188 | |
1189 | openRetry: | |
9bf4fa01 PS |
1190 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1191 | (void **)&rsp); | |
1da177e4 LT |
1192 | if (rc) |
1193 | return rc; | |
1194 | ||
9bf4fa01 PS |
1195 | /* no commands go after this */ |
1196 | req->AndXCommand = 0xFF; | |
1da177e4 | 1197 | |
9bf4fa01 PS |
1198 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1199 | /* account for one byte pad to word boundary */ | |
1200 | count = 1; | |
1201 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1202 | path, PATH_MAX, nls, remap); | |
1203 | /* trailing null */ | |
1204 | name_len++; | |
1da177e4 | 1205 | name_len *= 2; |
9bf4fa01 PS |
1206 | req->NameLength = cpu_to_le16(name_len); |
1207 | } else { | |
1208 | /* BB improve check for buffer overruns BB */ | |
1209 | /* no pad */ | |
1210 | count = 0; | |
340625e6 | 1211 | name_len = copy_path_name(req->fileName, path); |
9bf4fa01 | 1212 | req->NameLength = cpu_to_le16(name_len); |
1da177e4 | 1213 | } |
9bf4fa01 PS |
1214 | |
1215 | if (*oplock & REQ_OPLOCK) | |
1216 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1217 | else if (*oplock & REQ_BATCHOPLOCK) | |
1218 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1219 | ||
1220 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1221 | req->AllocationSize = 0; | |
1222 | ||
1223 | /* | |
1224 | * Set file as system file if special file such as fifo and server | |
1225 | * expecting SFU style and no Unix extensions. | |
1226 | */ | |
790fe579 | 1227 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1228 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1229 | else |
9bf4fa01 | 1230 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1231 | |
9bf4fa01 PS |
1232 | /* |
1233 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1234 | * sensitive checks for other servers such as Samba. | |
1235 | */ | |
1da177e4 | 1236 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1237 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1238 | |
67750fb9 | 1239 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1240 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1241 | ||
1242 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1243 | req->CreateDisposition = cpu_to_le32(disposition); | |
1244 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1245 | |
09d1db5c | 1246 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1247 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1248 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1249 | |
1250 | count += name_len; | |
9bf4fa01 | 1251 | inc_rfc1001_len(req, count); |
1da177e4 | 1252 | |
9bf4fa01 PS |
1253 | req->ByteCount = cpu_to_le16(count); |
1254 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1255 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1256 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1257 | if (rc) { |
f96637be | 1258 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1259 | cifs_buf_release(req); |
1260 | if (rc == -EAGAIN) | |
1261 | goto openRetry; | |
1262 | return rc; | |
1da177e4 | 1263 | } |
a5a2b489 | 1264 | |
9bf4fa01 PS |
1265 | /* 1 byte no need to le_to_cpu */ |
1266 | *oplock = rsp->OplockLevel; | |
1267 | /* cifs fid stays in le */ | |
d81b8a40 | 1268 | oparms->fid->netfid = rsp->Fid; |
86f740f2 | 1269 | oparms->fid->access = desired_access; |
9bf4fa01 PS |
1270 | |
1271 | /* Let caller know file was created so we can set the mode. */ | |
1272 | /* Do we care about the CreateAction in any other cases? */ | |
1273 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1274 | *oplock |= CIFS_CREATE_ACTION; | |
1275 | ||
1276 | if (buf) { | |
1277 | /* copy from CreationTime to Attributes */ | |
1278 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1279 | /* the file_info buf is endian converted by caller */ | |
1280 | buf->AllocationSize = rsp->AllocationSize; | |
1281 | buf->EndOfFile = rsp->EndOfFile; | |
1282 | buf->NumberOfLinks = cpu_to_le32(1); | |
1283 | buf->DeletePending = 0; | |
1284 | } | |
1285 | ||
1286 | cifs_buf_release(req); | |
1da177e4 LT |
1287 | return rc; |
1288 | } | |
1289 | ||
e28bc5b1 JL |
1290 | static void |
1291 | cifs_readv_callback(struct mid_q_entry *mid) | |
1292 | { | |
1293 | struct cifs_readdata *rdata = mid->callback_data; | |
1294 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1295 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1296 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1297 | .rq_nvec = 2, | |
d08089f6 DH |
1298 | .rq_iter_size = iov_iter_count(&rdata->iter), |
1299 | .rq_iter = rdata->iter }; | |
34f4deb7 | 1300 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
e28bc5b1 | 1301 | |
f96637be JP |
1302 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1303 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1304 | rdata->bytes); | |
e28bc5b1 | 1305 | |
7c9421e1 | 1306 | switch (mid->mid_state) { |
e28bc5b1 JL |
1307 | case MID_RESPONSE_RECEIVED: |
1308 | /* result already set, check signature */ | |
38d77c50 | 1309 | if (server->sign) { |
985e4ff0 SF |
1310 | int rc = 0; |
1311 | ||
bf5ea0e2 | 1312 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1313 | mid->sequence_number); |
985e4ff0 | 1314 | if (rc) |
f96637be JP |
1315 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1316 | rc); | |
e28bc5b1 JL |
1317 | } |
1318 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1319 | task_io_account_read(rdata->got_bytes); |
1320 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1321 | break; |
1322 | case MID_REQUEST_SUBMITTED: | |
1323 | case MID_RETRY_NEEDED: | |
1324 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1325 | if (server->sign && rdata->got_bytes) |
1326 | /* reset bytes number since we can not check a sign */ | |
1327 | rdata->got_bytes = 0; | |
1328 | /* FIXME: should this be counted toward the initiating task? */ | |
1329 | task_io_account_read(rdata->got_bytes); | |
1330 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1331 | break; |
1332 | default: | |
1333 | rdata->result = -EIO; | |
1334 | } | |
1335 | ||
da472fc8 | 1336 | queue_work(cifsiod_wq, &rdata->work); |
70f08f91 | 1337 | release_mid(mid); |
34f4deb7 | 1338 | add_credits(server, &credits, 0); |
e28bc5b1 JL |
1339 | } |
1340 | ||
1341 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1342 | int | |
1343 | cifs_async_readv(struct cifs_readdata *rdata) | |
1344 | { | |
1345 | int rc; | |
1346 | READ_REQ *smb = NULL; | |
1347 | int wct; | |
1348 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1349 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1350 | .rq_nvec = 2 }; | |
e28bc5b1 | 1351 | |
f96637be JP |
1352 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1353 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1354 | |
1355 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1356 | wct = 12; | |
1357 | else { | |
1358 | wct = 10; /* old style read */ | |
1359 | if ((rdata->offset >> 32) > 0) { | |
1360 | /* can not handle this big offset for old */ | |
1361 | return -EIO; | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1366 | if (rc) | |
1367 | return rc; | |
1368 | ||
1369 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1370 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1371 | ||
1372 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1373 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1374 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1375 | if (wct == 12) | |
1376 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1377 | smb->Remaining = 0; | |
1378 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1379 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1380 | if (wct == 12) | |
1381 | smb->ByteCount = 0; | |
1382 | else { | |
1383 | /* old style read */ | |
1384 | struct smb_com_readx_req *smbr = | |
1385 | (struct smb_com_readx_req *)smb; | |
1386 | smbr->ByteCount = 0; | |
1387 | } | |
1388 | ||
1389 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1390 | rdata->iov[0].iov_base = smb; |
1391 | rdata->iov[0].iov_len = 4; | |
1392 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1393 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1394 | |
6993f74a | 1395 | kref_get(&rdata->refcount); |
fec344e3 | 1396 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
3349c3a7 | 1397 | cifs_readv_callback, NULL, rdata, 0, NULL); |
e28bc5b1 JL |
1398 | |
1399 | if (rc == 0) | |
44c58186 | 1400 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1401 | else |
1402 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1403 | |
1404 | cifs_small_buf_release(smb); | |
1405 | return rc; | |
1406 | } | |
1407 | ||
1da177e4 | 1408 | int |
6d5786a3 PS |
1409 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1410 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1411 | { |
1412 | int rc = -EACCES; | |
1413 | READ_REQ *pSMB = NULL; | |
1414 | READ_RSP *pSMBr = NULL; | |
1415 | char *pReadData = NULL; | |
bfa0d75a | 1416 | int wct; |
ec637e3f SF |
1417 | int resp_buf_type = 0; |
1418 | struct kvec iov[1]; | |
da502f7d | 1419 | struct kvec rsp_iov; |
d4ffff1f PS |
1420 | __u32 pid = io_parms->pid; |
1421 | __u16 netfid = io_parms->netfid; | |
1422 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1423 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1424 | unsigned int count = io_parms->length; |
1da177e4 | 1425 | |
f96637be | 1426 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1427 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1428 | wct = 12; |
4c3130ef | 1429 | else { |
bfa0d75a | 1430 | wct = 10; /* old style read */ |
d4ffff1f | 1431 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1432 | /* can not handle this big offset for old */ |
1433 | return -EIO; | |
1434 | } | |
1435 | } | |
1da177e4 LT |
1436 | |
1437 | *nbytes = 0; | |
ec637e3f | 1438 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1439 | if (rc) |
1440 | return rc; | |
1441 | ||
d4ffff1f PS |
1442 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1443 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1444 | ||
1da177e4 LT |
1445 | /* tcon and ses pointer are checked in smb_init */ |
1446 | if (tcon->ses->server == NULL) | |
1447 | return -ECONNABORTED; | |
1448 | ||
ec637e3f | 1449 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1450 | pSMB->Fid = netfid; |
d4ffff1f | 1451 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1452 | if (wct == 12) |
d4ffff1f | 1453 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1454 | |
1da177e4 LT |
1455 | pSMB->Remaining = 0; |
1456 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1457 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1458 | if (wct == 12) |
bfa0d75a SF |
1459 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1460 | else { | |
1461 | /* old style read */ | |
50c2f753 | 1462 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1463 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1464 | pSMBW->ByteCount = 0; |
bfa0d75a | 1465 | } |
ec637e3f SF |
1466 | |
1467 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1468 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1469 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1470 | CIFS_LOG_ERROR, &rsp_iov); | |
1471 | cifs_small_buf_release(pSMB); | |
44c58186 | 1472 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1473 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1474 | if (rc) { |
f96637be | 1475 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1476 | } else { |
1477 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1478 | data_length = data_length << 16; | |
1479 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1480 | *nbytes = data_length; | |
1481 | ||
1482 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1483 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1484 | || (data_length > count)) { |
f96637be | 1485 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1486 | data_length, count); |
1da177e4 LT |
1487 | rc = -EIO; |
1488 | *nbytes = 0; | |
1489 | } else { | |
ec637e3f | 1490 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1491 | le16_to_cpu(pSMBr->DataOffset); |
1492 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1493 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1494 | rc = -EFAULT; |
26f57364 | 1495 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1496 | if (*buf) |
50c2f753 | 1497 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1498 | } |
1499 | } | |
1da177e4 | 1500 | |
790fe579 | 1501 | if (*buf) { |
da502f7d | 1502 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1503 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1504 | /* return buffer to caller to free */ |
da502f7d | 1505 | *buf = rsp_iov.iov_base; |
790fe579 | 1506 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1507 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1508 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1509 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1510 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1511 | |
1512 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1513 | since file handle passed in no longer valid */ |
1514 | return rc; | |
1515 | } | |
1516 | ||
ec637e3f | 1517 | |
1da177e4 | 1518 | int |
6d5786a3 | 1519 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1520 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1521 | { |
1522 | int rc = -EACCES; | |
1523 | WRITE_REQ *pSMB = NULL; | |
1524 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1525 | int bytes_returned, wct; |
1da177e4 LT |
1526 | __u32 bytes_sent; |
1527 | __u16 byte_count; | |
fa2989f4 PS |
1528 | __u32 pid = io_parms->pid; |
1529 | __u16 netfid = io_parms->netfid; | |
1530 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1531 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1532 | unsigned int count = io_parms->length; |
1da177e4 | 1533 | |
a24e2d7d SF |
1534 | *nbytes = 0; |
1535 | ||
f96637be | 1536 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1537 | if (tcon->ses == NULL) |
1c955187 SF |
1538 | return -ECONNABORTED; |
1539 | ||
790fe579 | 1540 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1541 | wct = 14; |
4c3130ef | 1542 | else { |
1c955187 | 1543 | wct = 12; |
4c3130ef SF |
1544 | if ((offset >> 32) > 0) { |
1545 | /* can not handle big offset for old srv */ | |
1546 | return -EIO; | |
1547 | } | |
1548 | } | |
1c955187 SF |
1549 | |
1550 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1551 | (void **) &pSMBr); |
1552 | if (rc) | |
1553 | return rc; | |
fa2989f4 PS |
1554 | |
1555 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1556 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1557 | ||
1da177e4 LT |
1558 | /* tcon and ses pointer are checked in smb_init */ |
1559 | if (tcon->ses->server == NULL) | |
1560 | return -ECONNABORTED; | |
1561 | ||
1562 | pSMB->AndXCommand = 0xFF; /* none */ | |
1563 | pSMB->Fid = netfid; | |
1564 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1565 | if (wct == 14) |
1c955187 | 1566 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1567 | |
1da177e4 LT |
1568 | pSMB->Reserved = 0xFFFFFFFF; |
1569 | pSMB->WriteMode = 0; | |
1570 | pSMB->Remaining = 0; | |
1571 | ||
50c2f753 | 1572 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1573 | can send more if LARGE_WRITE_X capability returned by the server and if |
1574 | our buffer is big enough or if we convert to iovecs on socket writes | |
1575 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1576 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1577 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1578 | } else { | |
1579 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1580 | & ~0xFF; | |
1581 | } | |
1582 | ||
1583 | if (bytes_sent > count) | |
1584 | bytes_sent = count; | |
1585 | pSMB->DataOffset = | |
50c2f753 | 1586 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1587 | if (buf) |
61e74801 | 1588 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1589 | else if (count != 0) { |
1da177e4 LT |
1590 | /* No buffer */ |
1591 | cifs_buf_release(pSMB); | |
1592 | return -EINVAL; | |
e30dcf3a | 1593 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1594 | if (wct == 14) |
e30dcf3a | 1595 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1596 | else /* wct == 12 */ |
e30dcf3a | 1597 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1598 | |
1da177e4 LT |
1599 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1600 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1601 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1602 | |
790fe579 | 1603 | if (wct == 14) |
1c955187 | 1604 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1605 | else { /* old style write has byte count 4 bytes earlier |
1606 | so 4 bytes pad */ | |
1607 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1608 | (struct smb_com_writex_req *)pSMB; |
1609 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1610 | } | |
1da177e4 LT |
1611 | |
1612 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1613 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1614 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1615 | if (rc) { |
f96637be | 1616 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1617 | } else { |
1618 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1619 | *nbytes = (*nbytes) << 16; | |
1620 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1621 | |
1622 | /* | |
1623 | * Mask off high 16 bits when bytes written as returned by the | |
1624 | * server is greater than bytes requested by the client. Some | |
1625 | * OS/2 servers are known to set incorrect CountHigh values. | |
1626 | */ | |
1627 | if (*nbytes > count) | |
1628 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1629 | } |
1630 | ||
1631 | cifs_buf_release(pSMB); | |
1632 | ||
50c2f753 | 1633 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1634 | since file handle passed in no longer valid */ |
1635 | ||
1636 | return rc; | |
1637 | } | |
1638 | ||
c28c89fc | 1639 | /* |
7c9421e1 | 1640 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1641 | * workqueue completion task. |
1642 | */ | |
1643 | static void | |
1644 | cifs_writev_callback(struct mid_q_entry *mid) | |
1645 | { | |
1646 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1647 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1648 | unsigned int written; |
1649 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
34f4deb7 | 1650 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
c28c89fc | 1651 | |
7c9421e1 | 1652 | switch (mid->mid_state) { |
c28c89fc JL |
1653 | case MID_RESPONSE_RECEIVED: |
1654 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1655 | if (wdata->result != 0) | |
1656 | break; | |
1657 | ||
1658 | written = le16_to_cpu(smb->CountHigh); | |
1659 | written <<= 16; | |
1660 | written += le16_to_cpu(smb->Count); | |
1661 | /* | |
1662 | * Mask off high 16 bits when bytes written as returned | |
1663 | * by the server is greater than bytes requested by the | |
1664 | * client. OS/2 servers are known to set incorrect | |
1665 | * CountHigh values. | |
1666 | */ | |
1667 | if (written > wdata->bytes) | |
1668 | written &= 0xFFFF; | |
1669 | ||
1670 | if (written < wdata->bytes) | |
1671 | wdata->result = -ENOSPC; | |
1672 | else | |
1673 | wdata->bytes = written; | |
1674 | break; | |
1675 | case MID_REQUEST_SUBMITTED: | |
1676 | case MID_RETRY_NEEDED: | |
1677 | wdata->result = -EAGAIN; | |
1678 | break; | |
1679 | default: | |
1680 | wdata->result = -EIO; | |
1681 | break; | |
1682 | } | |
1683 | ||
da472fc8 | 1684 | queue_work(cifsiod_wq, &wdata->work); |
70f08f91 | 1685 | release_mid(mid); |
34f4deb7 | 1686 | add_credits(tcon->ses->server, &credits, 0); |
c28c89fc JL |
1687 | } |
1688 | ||
1689 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
1690 | int | |
4a5c80d7 SF |
1691 | cifs_async_writev(struct cifs_writedata *wdata, |
1692 | void (*release)(struct kref *kref)) | |
c28c89fc | 1693 | { |
eddb079d | 1694 | int rc = -EACCES; |
c28c89fc JL |
1695 | WRITE_REQ *smb = NULL; |
1696 | int wct; | |
96daf2b0 | 1697 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 1698 | struct kvec iov[2]; |
fec344e3 | 1699 | struct smb_rqst rqst = { }; |
c28c89fc JL |
1700 | |
1701 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
1702 | wct = 14; | |
1703 | } else { | |
1704 | wct = 12; | |
1705 | if (wdata->offset >> 32 > 0) { | |
1706 | /* can not handle big offset for old srv */ | |
1707 | return -EIO; | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
1712 | if (rc) | |
1713 | goto async_writev_out; | |
1714 | ||
fe5f5d2e JL |
1715 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
1716 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 1717 | |
c28c89fc | 1718 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 1719 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
1720 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
1721 | if (wct == 14) | |
1722 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
1723 | smb->Reserved = 0xFFFFFFFF; | |
1724 | smb->WriteMode = 0; | |
1725 | smb->Remaining = 0; | |
1726 | ||
1727 | smb->DataOffset = | |
1728 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1729 | ||
1730 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1731 | iov[0].iov_len = 4; |
1732 | iov[0].iov_base = smb; | |
1733 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
1734 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 1735 | |
738f9de5 PS |
1736 | rqst.rq_iov = iov; |
1737 | rqst.rq_nvec = 2; | |
d08089f6 DH |
1738 | rqst.rq_iter = wdata->iter; |
1739 | rqst.rq_iter_size = iov_iter_count(&wdata->iter); | |
c28c89fc | 1740 | |
f96637be JP |
1741 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
1742 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
1743 | |
1744 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
1745 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
1746 | ||
1747 | if (wct == 14) { | |
1748 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
1749 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
1750 | } else { | |
1751 | /* wct == 12 */ | |
1752 | struct smb_com_writex_req *smbw = | |
1753 | (struct smb_com_writex_req *)smb; | |
1754 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
1755 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 1756 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
1757 | } |
1758 | ||
1759 | kref_get(&wdata->refcount); | |
fec344e3 | 1760 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
3349c3a7 | 1761 | cifs_writev_callback, NULL, wdata, 0, NULL); |
c28c89fc JL |
1762 | |
1763 | if (rc == 0) | |
44c58186 | 1764 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 1765 | else |
4a5c80d7 | 1766 | kref_put(&wdata->refcount, release); |
c28c89fc | 1767 | |
c28c89fc JL |
1768 | async_writev_out: |
1769 | cifs_small_buf_release(smb); | |
c28c89fc JL |
1770 | return rc; |
1771 | } | |
1772 | ||
d6e04ae6 | 1773 | int |
6d5786a3 | 1774 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 1775 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 | 1776 | { |
136a5dc3 | 1777 | int rc; |
1da177e4 | 1778 | WRITE_REQ *pSMB = NULL; |
ec637e3f | 1779 | int wct; |
d6e04ae6 | 1780 | int smb_hdr_len; |
ec637e3f | 1781 | int resp_buf_type = 0; |
fa2989f4 PS |
1782 | __u32 pid = io_parms->pid; |
1783 | __u16 netfid = io_parms->netfid; | |
1784 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1785 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1786 | unsigned int count = io_parms->length; |
da502f7d | 1787 | struct kvec rsp_iov; |
1da177e4 | 1788 | |
fbec9ab9 JL |
1789 | *nbytes = 0; |
1790 | ||
f96637be | 1791 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 1792 | |
4c3130ef | 1793 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1794 | wct = 14; |
4c3130ef | 1795 | } else { |
8cc64c6e | 1796 | wct = 12; |
4c3130ef SF |
1797 | if ((offset >> 32) > 0) { |
1798 | /* can not handle big offset for old srv */ | |
1799 | return -EIO; | |
1800 | } | |
1801 | } | |
8cc64c6e | 1802 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1803 | if (rc) |
1804 | return rc; | |
fa2989f4 PS |
1805 | |
1806 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1807 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1808 | ||
1da177e4 LT |
1809 | /* tcon and ses pointer are checked in smb_init */ |
1810 | if (tcon->ses->server == NULL) | |
1811 | return -ECONNABORTED; | |
1812 | ||
d6e04ae6 | 1813 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1814 | pSMB->Fid = netfid; |
1815 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1816 | if (wct == 14) |
8cc64c6e | 1817 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1818 | pSMB->Reserved = 0xFFFFFFFF; |
1819 | pSMB->WriteMode = 0; | |
1820 | pSMB->Remaining = 0; | |
d6e04ae6 | 1821 | |
1da177e4 | 1822 | pSMB->DataOffset = |
50c2f753 | 1823 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1824 | |
3e84469d SF |
1825 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1826 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1827 | /* header + 1 byte pad */ |
1828 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1829 | if (wct == 14) |
be8e3b00 | 1830 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1831 | else /* wct == 12 */ |
be8e3b00 | 1832 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1833 | if (wct == 14) |
8cc64c6e SF |
1834 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1835 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1836 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1837 | (struct smb_com_writex_req *)pSMB; |
1838 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1839 | } | |
3e84469d | 1840 | iov[0].iov_base = pSMB; |
790fe579 | 1841 | if (wct == 14) |
ec637e3f SF |
1842 | iov[0].iov_len = smb_hdr_len + 4; |
1843 | else /* wct == 12 pad bigger by four bytes */ | |
1844 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1845 | |
da502f7d PS |
1846 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
1847 | &rsp_iov); | |
1848 | cifs_small_buf_release(pSMB); | |
44c58186 | 1849 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1850 | if (rc) { |
f96637be | 1851 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 1852 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1853 | /* presumably this can not happen, but best to be safe */ |
1854 | rc = -EIO; | |
d6e04ae6 | 1855 | } else { |
da502f7d | 1856 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
1857 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1858 | *nbytes = (*nbytes) << 16; | |
1859 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1860 | |
1861 | /* | |
1862 | * Mask off high 16 bits when bytes written as returned by the | |
1863 | * server is greater than bytes requested by the client. OS/2 | |
1864 | * servers are known to set incorrect CountHigh values. | |
1865 | */ | |
1866 | if (*nbytes > count) | |
1867 | *nbytes &= 0xFFFF; | |
50c2f753 | 1868 | } |
1da177e4 | 1869 | |
da502f7d | 1870 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 1871 | |
50c2f753 | 1872 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1873 | since file handle passed in no longer valid */ |
1874 | ||
1875 | return rc; | |
1876 | } | |
d6e04ae6 | 1877 | |
6d5786a3 PS |
1878 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
1879 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
1880 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
1881 | { | |
1882 | int rc = 0; | |
1883 | LOCK_REQ *pSMB = NULL; | |
1884 | struct kvec iov[2]; | |
da502f7d | 1885 | struct kvec rsp_iov; |
9ee305b7 PS |
1886 | int resp_buf_type; |
1887 | __u16 count; | |
1888 | ||
f96637be JP |
1889 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
1890 | num_lock, num_unlock); | |
9ee305b7 PS |
1891 | |
1892 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
1893 | if (rc) | |
1894 | return rc; | |
1895 | ||
1896 | pSMB->Timeout = 0; | |
1897 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
1898 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
1899 | pSMB->LockType = lock_type; | |
1900 | pSMB->AndXCommand = 0xFF; /* none */ | |
1901 | pSMB->Fid = netfid; /* netfid stays le */ | |
1902 | ||
1903 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1904 | inc_rfc1001_len(pSMB, count); | |
1905 | pSMB->ByteCount = cpu_to_le16(count); | |
1906 | ||
1907 | iov[0].iov_base = (char *)pSMB; | |
1908 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
1909 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1910 | iov[1].iov_base = (char *)buf; | |
1911 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1912 | ||
44c58186 | 1913 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
392e1c5d RS |
1914 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, |
1915 | CIFS_NO_RSP_BUF, &rsp_iov); | |
da502f7d | 1916 | cifs_small_buf_release(pSMB); |
9ee305b7 | 1917 | if (rc) |
f96637be | 1918 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
1919 | |
1920 | return rc; | |
1921 | } | |
d6e04ae6 | 1922 | |
1da177e4 | 1923 | int |
6d5786a3 | 1924 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 1925 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 1926 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
1927 | const __u32 numLock, const __u8 lockType, |
1928 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1929 | { |
1930 | int rc = 0; | |
1931 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1932 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 1933 | int bytes_returned; |
a891f0f8 | 1934 | int flags = 0; |
1da177e4 LT |
1935 | __u16 count; |
1936 | ||
f96637be JP |
1937 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
1938 | (int)waitFlag, numLock); | |
46810cbf SF |
1939 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1940 | ||
1da177e4 LT |
1941 | if (rc) |
1942 | return rc; | |
1943 | ||
790fe579 | 1944 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 | 1945 | /* no response expected */ |
392e1c5d | 1946 | flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP; |
1da177e4 | 1947 | pSMB->Timeout = 0; |
4b18f2a9 | 1948 | } else if (waitFlag) { |
a891f0f8 | 1949 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1950 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1951 | } else { | |
1952 | pSMB->Timeout = 0; | |
1953 | } | |
1954 | ||
1955 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1956 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1957 | pSMB->LockType = lockType; | |
12fed00d | 1958 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1959 | pSMB->AndXCommand = 0xFF; /* none */ |
1960 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1961 | ||
790fe579 | 1962 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 1963 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
1964 | /* BB where to store pid high? */ |
1965 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1966 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1967 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1968 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1969 | count = sizeof(LOCKING_ANDX_RANGE); | |
1970 | } else { | |
1971 | /* oplock break */ | |
1972 | count = 0; | |
1973 | } | |
be8e3b00 | 1974 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1975 | pSMB->ByteCount = cpu_to_le16(count); |
1976 | ||
da502f7d | 1977 | if (waitFlag) |
7ee1af76 | 1978 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 1979 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 1980 | else |
a891f0f8 | 1981 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 1982 | cifs_small_buf_release(pSMB); |
44c58186 | 1983 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 1984 | if (rc) |
f96637be | 1985 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 1986 | |
50c2f753 | 1987 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1988 | since file handle passed in no longer valid */ |
1989 | return rc; | |
1990 | } | |
1991 | ||
08547b03 | 1992 | int |
6d5786a3 | 1993 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
1994 | const __u16 smb_file_id, const __u32 netpid, |
1995 | const loff_t start_offset, const __u64 len, | |
1996 | struct file_lock *pLockData, const __u16 lock_type, | |
1997 | const bool waitFlag) | |
08547b03 SF |
1998 | { |
1999 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2000 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2001 | struct cifs_posix_lock *parm_data; |
2002 | int rc = 0; | |
3a5ff61c | 2003 | int timeout = 0; |
08547b03 | 2004 | int bytes_returned = 0; |
133672ef | 2005 | int resp_buf_type = 0; |
08547b03 | 2006 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2007 | struct kvec iov[1]; |
da502f7d | 2008 | struct kvec rsp_iov; |
08547b03 | 2009 | |
f96637be | 2010 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 2011 | |
08547b03 SF |
2012 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2013 | ||
2014 | if (rc) | |
2015 | return rc; | |
2016 | ||
2017 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2018 | ||
50c2f753 | 2019 | params = 6; |
08547b03 SF |
2020 | pSMB->MaxSetupCount = 0; |
2021 | pSMB->Reserved = 0; | |
2022 | pSMB->Flags = 0; | |
08547b03 SF |
2023 | pSMB->Reserved2 = 0; |
2024 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2025 | offset = param_offset + params; | |
2026 | ||
08547b03 SF |
2027 | count = sizeof(struct cifs_posix_lock); |
2028 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2029 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2030 | pSMB->SetupCount = 1; |
2031 | pSMB->Reserved3 = 0; | |
c5fd363d | 2032 | if (pLockData) |
08547b03 SF |
2033 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2034 | else | |
2035 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2036 | byte_count = 3 /* pad */ + params + count; | |
2037 | pSMB->DataCount = cpu_to_le16(count); | |
2038 | pSMB->ParameterCount = cpu_to_le16(params); | |
2039 | pSMB->TotalDataCount = pSMB->DataCount; | |
2040 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2041 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
d4dc277c | 2042 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
50c2f753 | 2043 | parm_data = (struct cifs_posix_lock *) |
d4dc277c | 2044 | (((char *)pSMB) + offset + 4); |
08547b03 SF |
2045 | |
2046 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2047 | if (waitFlag) { |
133672ef | 2048 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2049 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2050 | pSMB->Timeout = cpu_to_le32(-1); |
2051 | } else | |
2052 | pSMB->Timeout = 0; | |
2053 | ||
4f6bcec9 | 2054 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2055 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2056 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2057 | |
2058 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2059 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2060 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2061 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2062 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2063 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2064 | if (waitFlag) { |
2065 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2066 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2067 | } else { | |
133672ef | 2068 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2069 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2070 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2071 | &resp_buf_type, timeout, &rsp_iov); |
2072 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2073 | } |
da502f7d | 2074 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2075 | |
08547b03 | 2076 | if (rc) { |
f96637be | 2077 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2078 | } else if (pLockData) { |
fc94cdb9 SF |
2079 | /* lock structure can be returned on get */ |
2080 | __u16 data_offset; | |
2081 | __u16 data_count; | |
2082 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2083 | ||
820a803f | 2084 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2085 | rc = -EIO; /* bad smb */ |
2086 | goto plk_err_exit; | |
2087 | } | |
fc94cdb9 SF |
2088 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2089 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2090 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2091 | rc = -EIO; |
2092 | goto plk_err_exit; | |
2093 | } | |
2094 | parm_data = (struct cifs_posix_lock *) | |
2095 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2096 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2097 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2098 | else { |
2099 | if (parm_data->lock_type == | |
bc09d141 | 2100 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2101 | pLockData->fl_type = F_RDLCK; |
2102 | else if (parm_data->lock_type == | |
bc09d141 | 2103 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2104 | pLockData->fl_type = F_WRLCK; |
2105 | ||
5443d130 SF |
2106 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2107 | pLockData->fl_end = pLockData->fl_start + | |
d80c6984 PA |
2108 | (le64_to_cpu(parm_data->length) ? |
2109 | le64_to_cpu(parm_data->length) - 1 : 0); | |
9d5b86ac | 2110 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2111 | } |
08547b03 | 2112 | } |
50c2f753 | 2113 | |
fc94cdb9 | 2114 | plk_err_exit: |
da502f7d | 2115 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2116 | |
08547b03 SF |
2117 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2118 | since file handle passed in no longer valid */ | |
2119 | ||
2120 | return rc; | |
2121 | } | |
2122 | ||
2123 | ||
1da177e4 | 2124 | int |
6d5786a3 | 2125 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2126 | { |
2127 | int rc = 0; | |
2128 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2129 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2130 | |
2131 | /* do not retry on dead session on close */ | |
2132 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2133 | if (rc == -EAGAIN) |
1da177e4 LT |
2134 | return 0; |
2135 | if (rc) | |
2136 | return rc; | |
2137 | ||
1da177e4 | 2138 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2139 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2140 | pSMB->ByteCount = 0; |
792af7b0 | 2141 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2142 | cifs_small_buf_release(pSMB); |
44c58186 | 2143 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2144 | if (rc) { |
790fe579 | 2145 | if (rc != -EINTR) { |
1da177e4 | 2146 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2147 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2148 | } |
2149 | } | |
2150 | ||
1da177e4 | 2151 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2152 | if (rc == -EAGAIN) |
1da177e4 LT |
2153 | rc = 0; |
2154 | ||
2155 | return rc; | |
2156 | } | |
2157 | ||
b298f223 | 2158 | int |
6d5786a3 | 2159 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2160 | { |
2161 | int rc = 0; | |
2162 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2163 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2164 | |
2165 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2166 | if (rc) | |
2167 | return rc; | |
2168 | ||
2169 | pSMB->FileID = (__u16) smb_file_id; | |
2170 | pSMB->ByteCount = 0; | |
792af7b0 | 2171 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2172 | cifs_small_buf_release(pSMB); |
44c58186 | 2173 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2174 | if (rc) |
f96637be | 2175 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2176 | |
2177 | return rc; | |
2178 | } | |
2179 | ||
1da177e4 | 2180 | int |
6d5786a3 | 2181 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2182 | const char *from_name, const char *to_name, |
2183 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2184 | { |
2185 | int rc = 0; | |
2186 | RENAME_REQ *pSMB = NULL; | |
2187 | RENAME_RSP *pSMBr = NULL; | |
2188 | int bytes_returned; | |
2189 | int name_len, name_len2; | |
2190 | __u16 count; | |
2baa2682 | 2191 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2192 | |
f96637be | 2193 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2194 | renameRetry: |
2195 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2196 | (void **) &pSMBr); | |
2197 | if (rc) | |
2198 | return rc; | |
2199 | ||
2200 | pSMB->BufferFormat = 0x04; | |
2201 | pSMB->SearchAttributes = | |
2202 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2203 | ATTR_DIRECTORY); | |
2204 | ||
2205 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2206 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2207 | from_name, PATH_MAX, | |
2208 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2209 | name_len++; /* trailing null */ |
2210 | name_len *= 2; | |
2211 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2212 | /* protocol requires ASCII signature byte on Unicode string */ | |
2213 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2214 | name_len2 = | |
acbbb76a | 2215 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2216 | to_name, PATH_MAX, cifs_sb->local_nls, |
2217 | remap); | |
1da177e4 LT |
2218 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2219 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2220 | } else { |
2221 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
2222 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); | |
1da177e4 | 2223 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
1da177e4 LT |
2224 | name_len2++; /* signature byte */ |
2225 | } | |
2226 | ||
2227 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2228 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2229 | pSMB->ByteCount = cpu_to_le16(count); |
2230 | ||
2231 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2232 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2233 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2234 | if (rc) |
f96637be | 2235 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2236 | |
1da177e4 LT |
2237 | cifs_buf_release(pSMB); |
2238 | ||
2239 | if (rc == -EAGAIN) | |
2240 | goto renameRetry; | |
2241 | ||
2242 | return rc; | |
2243 | } | |
2244 | ||
6d5786a3 | 2245 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2246 | int netfid, const char *target_name, |
50c2f753 | 2247 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2248 | { |
2249 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2250 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2251 | struct set_file_rename *rename_info; |
1da177e4 LT |
2252 | char *data_offset; |
2253 | char dummy_string[30]; | |
2254 | int rc = 0; | |
2255 | int bytes_returned = 0; | |
2256 | int len_of_str; | |
2257 | __u16 params, param_offset, offset, count, byte_count; | |
2258 | ||
f96637be | 2259 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2260 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2261 | (void **) &pSMBr); | |
2262 | if (rc) | |
2263 | return rc; | |
2264 | ||
2265 | params = 6; | |
2266 | pSMB->MaxSetupCount = 0; | |
2267 | pSMB->Reserved = 0; | |
2268 | pSMB->Flags = 0; | |
2269 | pSMB->Timeout = 0; | |
2270 | pSMB->Reserved2 = 0; | |
2271 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2272 | offset = param_offset + params; | |
2273 | ||
f371793d SF |
2274 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2275 | data_offset = (char *)(pSMB) + offset + 4; | |
1da177e4 LT |
2276 | rename_info = (struct set_file_rename *) data_offset; |
2277 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2278 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2279 | pSMB->SetupCount = 1; |
2280 | pSMB->Reserved3 = 0; | |
2281 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2282 | byte_count = 3 /* pad */ + params; | |
2283 | pSMB->ParameterCount = cpu_to_le16(params); | |
2284 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2285 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2286 | pSMB->DataOffset = cpu_to_le16(offset); | |
2287 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2288 | rename_info->overwrite = cpu_to_le32(1); | |
2289 | rename_info->root_fid = 0; | |
2290 | /* unicode only call */ | |
790fe579 | 2291 | if (target_name == NULL) { |
50c2f753 | 2292 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2293 | len_of_str = |
2294 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2295 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2296 | } else { |
acbbb76a SF |
2297 | len_of_str = |
2298 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2299 | target_name, PATH_MAX, nls_codepage, |
2300 | remap); | |
1da177e4 LT |
2301 | } |
2302 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
d7173623 | 2303 | count = sizeof(struct set_file_rename) + (2 * len_of_str); |
1da177e4 LT |
2304 | byte_count += count; |
2305 | pSMB->DataCount = cpu_to_le16(count); | |
2306 | pSMB->TotalDataCount = pSMB->DataCount; | |
2307 | pSMB->Fid = netfid; | |
2308 | pSMB->InformationLevel = | |
2309 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2310 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2311 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2312 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2313 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2314 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2315 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2316 | if (rc) |
f96637be JP |
2317 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2318 | rc); | |
a5a2b489 | 2319 | |
1da177e4 LT |
2320 | cifs_buf_release(pSMB); |
2321 | ||
2322 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2323 | since file handle passed in no longer valid */ | |
2324 | ||
2325 | return rc; | |
2326 | } | |
2327 | ||
2328 | int | |
6d5786a3 PS |
2329 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2330 | const char *fromName, const __u16 target_tid, const char *toName, | |
2331 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2332 | { |
2333 | int rc = 0; | |
2334 | COPY_REQ *pSMB = NULL; | |
2335 | COPY_RSP *pSMBr = NULL; | |
2336 | int bytes_returned; | |
2337 | int name_len, name_len2; | |
2338 | __u16 count; | |
2339 | ||
f96637be | 2340 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2341 | copyRetry: |
2342 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2343 | (void **) &pSMBr); | |
2344 | if (rc) | |
2345 | return rc; | |
2346 | ||
2347 | pSMB->BufferFormat = 0x04; | |
2348 | pSMB->Tid2 = target_tid; | |
2349 | ||
2350 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2351 | ||
2352 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2353 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2354 | fromName, PATH_MAX, nls_codepage, | |
2355 | remap); | |
1da177e4 LT |
2356 | name_len++; /* trailing null */ |
2357 | name_len *= 2; | |
2358 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2359 | /* protocol requires ASCII signature byte on Unicode string */ | |
2360 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2361 | name_len2 = |
acbbb76a SF |
2362 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2363 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2364 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2365 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2366 | } else { |
2367 | name_len = copy_path_name(pSMB->OldFileName, fromName); | |
1da177e4 | 2368 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2369 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName); |
1da177e4 LT |
2370 | name_len2++; /* signature byte */ |
2371 | } | |
2372 | ||
2373 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2374 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2375 | pSMB->ByteCount = cpu_to_le16(count); |
2376 | ||
2377 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2378 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2379 | if (rc) { | |
f96637be JP |
2380 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2381 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2382 | } |
0d817bc0 | 2383 | cifs_buf_release(pSMB); |
1da177e4 LT |
2384 | |
2385 | if (rc == -EAGAIN) | |
2386 | goto copyRetry; | |
2387 | ||
2388 | return rc; | |
2389 | } | |
2390 | ||
2391 | int | |
6d5786a3 | 2392 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2393 | const char *fromName, const char *toName, |
bc8ebdc4 | 2394 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2395 | { |
2396 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2397 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2398 | char *data_offset; | |
2399 | int name_len; | |
2400 | int name_len_target; | |
2401 | int rc = 0; | |
2402 | int bytes_returned = 0; | |
2403 | __u16 params, param_offset, offset, byte_count; | |
2404 | ||
f96637be | 2405 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2406 | createSymLinkRetry: |
2407 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2408 | (void **) &pSMBr); | |
2409 | if (rc) | |
2410 | return rc; | |
2411 | ||
2412 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2413 | name_len = | |
bc8ebdc4 NA |
2414 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2415 | /* find define for this maxpathcomponent */ | |
2416 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2417 | name_len++; /* trailing null */ |
2418 | name_len *= 2; | |
2419 | ||
340625e6 RS |
2420 | } else { |
2421 | name_len = copy_path_name(pSMB->FileName, fromName); | |
1da177e4 LT |
2422 | } |
2423 | params = 6 + name_len; | |
2424 | pSMB->MaxSetupCount = 0; | |
2425 | pSMB->Reserved = 0; | |
2426 | pSMB->Flags = 0; | |
2427 | pSMB->Timeout = 0; | |
2428 | pSMB->Reserved2 = 0; | |
2429 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2430 | InformationLevel) - 4; |
1da177e4 LT |
2431 | offset = param_offset + params; |
2432 | ||
ded2d99c SF |
2433 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2434 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2435 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2436 | name_len_target = | |
bc8ebdc4 NA |
2437 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2438 | /* find define for this maxpathcomponent */ | |
2439 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2440 | name_len_target++; /* trailing null */ |
2441 | name_len_target *= 2; | |
340625e6 RS |
2442 | } else { |
2443 | name_len_target = copy_path_name(data_offset, toName); | |
1da177e4 LT |
2444 | } |
2445 | ||
2446 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2447 | /* BB find exact max on data count below from sess */ | |
2448 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2449 | pSMB->SetupCount = 1; | |
2450 | pSMB->Reserved3 = 0; | |
2451 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2452 | byte_count = 3 /* pad */ + params + name_len_target; | |
2453 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2454 | pSMB->ParameterCount = cpu_to_le16(params); | |
2455 | pSMB->TotalDataCount = pSMB->DataCount; | |
2456 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2457 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2458 | pSMB->DataOffset = cpu_to_le16(offset); | |
2459 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2460 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2461 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2462 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2463 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2464 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2465 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2466 | if (rc) |
f96637be JP |
2467 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2468 | rc); | |
1da177e4 | 2469 | |
0d817bc0 | 2470 | cifs_buf_release(pSMB); |
1da177e4 LT |
2471 | |
2472 | if (rc == -EAGAIN) | |
2473 | goto createSymLinkRetry; | |
2474 | ||
2475 | return rc; | |
2476 | } | |
2477 | ||
2478 | int | |
6d5786a3 | 2479 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2480 | const char *fromName, const char *toName, |
737b758c | 2481 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2482 | { |
2483 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2484 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2485 | char *data_offset; | |
2486 | int name_len; | |
2487 | int name_len_target; | |
2488 | int rc = 0; | |
2489 | int bytes_returned = 0; | |
2490 | __u16 params, param_offset, offset, byte_count; | |
2491 | ||
f96637be | 2492 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2493 | createHardLinkRetry: |
2494 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2495 | (void **) &pSMBr); | |
2496 | if (rc) | |
2497 | return rc; | |
2498 | ||
2499 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2500 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2501 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2502 | name_len++; /* trailing null */ |
2503 | name_len *= 2; | |
2504 | ||
340625e6 RS |
2505 | } else { |
2506 | name_len = copy_path_name(pSMB->FileName, toName); | |
1da177e4 LT |
2507 | } |
2508 | params = 6 + name_len; | |
2509 | pSMB->MaxSetupCount = 0; | |
2510 | pSMB->Reserved = 0; | |
2511 | pSMB->Flags = 0; | |
2512 | pSMB->Timeout = 0; | |
2513 | pSMB->Reserved2 = 0; | |
2514 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2515 | InformationLevel) - 4; |
1da177e4 LT |
2516 | offset = param_offset + params; |
2517 | ||
819f916c SF |
2518 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2519 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2520 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2521 | name_len_target = | |
acbbb76a SF |
2522 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2523 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2524 | name_len_target++; /* trailing null */ |
2525 | name_len_target *= 2; | |
340625e6 RS |
2526 | } else { |
2527 | name_len_target = copy_path_name(data_offset, fromName); | |
1da177e4 LT |
2528 | } |
2529 | ||
2530 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2531 | /* BB find exact max on data count below from sess*/ | |
2532 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2533 | pSMB->SetupCount = 1; | |
2534 | pSMB->Reserved3 = 0; | |
2535 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2536 | byte_count = 3 /* pad */ + params + name_len_target; | |
2537 | pSMB->ParameterCount = cpu_to_le16(params); | |
2538 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2539 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2540 | pSMB->TotalDataCount = pSMB->DataCount; | |
2541 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2542 | pSMB->DataOffset = cpu_to_le16(offset); | |
2543 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2544 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2545 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2546 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2547 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2548 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2549 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2550 | if (rc) |
f96637be JP |
2551 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2552 | rc); | |
1da177e4 LT |
2553 | |
2554 | cifs_buf_release(pSMB); | |
2555 | if (rc == -EAGAIN) | |
2556 | goto createHardLinkRetry; | |
2557 | ||
2558 | return rc; | |
2559 | } | |
2560 | ||
2561 | int | |
6d5786a3 | 2562 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2563 | const char *from_name, const char *to_name, |
2564 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2565 | { |
2566 | int rc = 0; | |
2567 | NT_RENAME_REQ *pSMB = NULL; | |
2568 | RENAME_RSP *pSMBr = NULL; | |
2569 | int bytes_returned; | |
2570 | int name_len, name_len2; | |
2571 | __u16 count; | |
2baa2682 | 2572 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2573 | |
f96637be | 2574 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2575 | winCreateHardLinkRetry: |
2576 | ||
2577 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2578 | (void **) &pSMBr); | |
2579 | if (rc) | |
2580 | return rc; | |
2581 | ||
2582 | pSMB->SearchAttributes = | |
2583 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2584 | ATTR_DIRECTORY); | |
2585 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2586 | pSMB->ClusterCount = 0; | |
2587 | ||
2588 | pSMB->BufferFormat = 0x04; | |
2589 | ||
2590 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2591 | name_len = | |
d6e906f1 SF |
2592 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2593 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2594 | name_len++; /* trailing null */ |
2595 | name_len *= 2; | |
fcc7c09d JL |
2596 | |
2597 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2598 | pSMB->OldFileName[name_len] = 0x04; | |
2599 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2600 | name_len2 = |
acbbb76a | 2601 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2602 | to_name, PATH_MAX, cifs_sb->local_nls, |
2603 | remap); | |
1da177e4 LT |
2604 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2605 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2606 | } else { |
2607 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
1da177e4 | 2608 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2609 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
1da177e4 LT |
2610 | name_len2++; /* signature byte */ |
2611 | } | |
2612 | ||
2613 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2614 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2615 | pSMB->ByteCount = cpu_to_le16(count); |
2616 | ||
2617 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2618 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2619 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2620 | if (rc) |
f96637be | 2621 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 2622 | |
1da177e4 LT |
2623 | cifs_buf_release(pSMB); |
2624 | if (rc == -EAGAIN) | |
2625 | goto winCreateHardLinkRetry; | |
2626 | ||
2627 | return rc; | |
2628 | } | |
2629 | ||
2630 | int | |
6d5786a3 | 2631 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2632 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 2633 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2634 | { |
2635 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2636 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2637 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2638 | int rc = 0; | |
2639 | int bytes_returned; | |
2640 | int name_len; | |
2641 | __u16 params, byte_count; | |
460b9696 | 2642 | char *data_start; |
1da177e4 | 2643 | |
f96637be | 2644 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
2645 | |
2646 | querySymLinkRetry: | |
2647 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2648 | (void **) &pSMBr); | |
2649 | if (rc) | |
2650 | return rc; | |
2651 | ||
2652 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2653 | name_len = | |
bc8ebdc4 NA |
2654 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
2655 | searchName, PATH_MAX, nls_codepage, | |
2656 | remap); | |
1da177e4 LT |
2657 | name_len++; /* trailing null */ |
2658 | name_len *= 2; | |
340625e6 RS |
2659 | } else { |
2660 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
2661 | } |
2662 | ||
2663 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2664 | pSMB->TotalDataCount = 0; | |
2665 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2666 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2667 | pSMB->MaxSetupCount = 0; |
2668 | pSMB->Reserved = 0; | |
2669 | pSMB->Flags = 0; | |
2670 | pSMB->Timeout = 0; | |
2671 | pSMB->Reserved2 = 0; | |
2672 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2673 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2674 | pSMB->DataCount = 0; |
2675 | pSMB->DataOffset = 0; | |
2676 | pSMB->SetupCount = 1; | |
2677 | pSMB->Reserved3 = 0; | |
2678 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2679 | byte_count = params + 1 /* pad */ ; | |
2680 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2681 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2682 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2683 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2684 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2685 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2686 | ||
2687 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2688 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2689 | if (rc) { | |
f96637be | 2690 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
2691 | } else { |
2692 | /* decode response */ | |
2693 | ||
2694 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2695 | /* BB also check enough total bytes returned */ |
820a803f | 2696 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2697 | rc = -EIO; |
1da177e4 | 2698 | else { |
0e0d2cf3 | 2699 | bool is_unicode; |
460b9696 JL |
2700 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2701 | ||
2702 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2703 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2704 | |
0e0d2cf3 SF |
2705 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2706 | is_unicode = true; | |
2707 | else | |
2708 | is_unicode = false; | |
2709 | ||
737b758c | 2710 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
2711 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
2712 | count, is_unicode, nls_codepage); | |
8b6427a2 | 2713 | if (!*symlinkinfo) |
460b9696 | 2714 | rc = -ENOMEM; |
1da177e4 LT |
2715 | } |
2716 | } | |
2717 | cifs_buf_release(pSMB); | |
2718 | if (rc == -EAGAIN) | |
2719 | goto querySymLinkRetry; | |
2720 | return rc; | |
2721 | } | |
2722 | ||
c52a9554 SF |
2723 | /* |
2724 | * Recent Windows versions now create symlinks more frequently | |
2725 | * and they use the "reparse point" mechanism below. We can of course | |
2726 | * do symlinks nicely to Samba and other servers which support the | |
2727 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2728 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2729 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2730 | * In the interim this code has been moved to its own config option so | |
2731 | * it is not compiled in by default until callers fixed up and more tested. | |
2732 | */ | |
1da177e4 | 2733 | int |
d244bf2d PS |
2734 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
2735 | __u16 fid, char **symlinkinfo, | |
2736 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
2737 | { |
2738 | int rc = 0; | |
2739 | int bytes_returned; | |
50c2f753 SF |
2740 | struct smb_com_transaction_ioctl_req *pSMB; |
2741 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
2742 | bool is_unicode; |
2743 | unsigned int sub_len; | |
2744 | char *sub_start; | |
c31f3307 SF |
2745 | struct reparse_symlink_data *reparse_buf; |
2746 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
2747 | __u32 data_offset, data_count; |
2748 | char *end_of_smb; | |
2749 | ||
2750 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
2751 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2752 | (void **) &pSMBr); | |
2753 | if (rc) | |
2754 | return rc; | |
2755 | ||
2756 | pSMB->TotalParameterCount = 0 ; | |
2757 | pSMB->TotalDataCount = 0; | |
2758 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2759 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 2760 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
2761 | pSMB->MaxSetupCount = 4; |
2762 | pSMB->Reserved = 0; | |
2763 | pSMB->ParameterOffset = 0; | |
2764 | pSMB->DataCount = 0; | |
2765 | pSMB->DataOffset = 0; | |
2766 | pSMB->SetupCount = 4; | |
2767 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2768 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2769 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2770 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2771 | pSMB->IsRootFlag = 0; | |
2772 | pSMB->Fid = fid; /* file handle always le */ | |
2773 | pSMB->ByteCount = 0; | |
2774 | ||
2775 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2776 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2777 | if (rc) { | |
f96637be | 2778 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
2779 | goto qreparse_out; |
2780 | } | |
2781 | ||
2782 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2783 | data_count = le32_to_cpu(pSMBr->DataCount); | |
2784 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
2785 | /* BB also check enough total bytes returned */ | |
2786 | rc = -EIO; /* bad smb */ | |
2787 | goto qreparse_out; | |
2788 | } | |
2789 | if (!data_count || (data_count > 2048)) { | |
2790 | rc = -EIO; | |
2791 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
2792 | goto qreparse_out; | |
2793 | } | |
2794 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 2795 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
2796 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
2797 | if ((char *)reparse_buf >= end_of_smb) { | |
2798 | rc = -EIO; | |
2799 | goto qreparse_out; | |
1da177e4 | 2800 | } |
c31f3307 SF |
2801 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
2802 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
2803 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
2804 | ||
2805 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
2806 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
2807 | le64_to_cpu(posix_buf->InodeType)); | |
2808 | rc = -EOPNOTSUPP; | |
2809 | goto qreparse_out; | |
2810 | } | |
2811 | is_unicode = true; | |
2812 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
2813 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
2814 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
2815 | rc = -EIO; | |
2816 | goto qreparse_out; | |
2817 | } | |
2818 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
2819 | sub_len, is_unicode, nls_codepage); | |
2820 | goto qreparse_out; | |
2821 | } else if (reparse_buf->ReparseTag != | |
2822 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
2823 | rc = -EOPNOTSUPP; | |
2824 | goto qreparse_out; | |
2825 | } | |
2826 | ||
2827 | /* Reparse tag is NTFS symlink */ | |
2828 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
2829 | reparse_buf->PathBuffer; | |
2830 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
2831 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
2832 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
2833 | rc = -EIO; | |
2834 | goto qreparse_out; | |
2835 | } | |
d244bf2d PS |
2836 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2837 | is_unicode = true; | |
2838 | else | |
2839 | is_unicode = false; | |
989c7e51 | 2840 | |
d244bf2d PS |
2841 | /* BB FIXME investigate remapping reserved chars here */ |
2842 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
2843 | nls_codepage); | |
2844 | if (!*symlinkinfo) | |
2845 | rc = -ENOMEM; | |
1da177e4 | 2846 | qreparse_out: |
4a6d87f1 | 2847 | cifs_buf_release(pSMB); |
1da177e4 | 2848 | |
d244bf2d PS |
2849 | /* |
2850 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2851 | * since file handle passed in no longer valid. | |
2852 | */ | |
1da177e4 LT |
2853 | return rc; |
2854 | } | |
2855 | ||
c7f508a9 SF |
2856 | int |
2857 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
2858 | __u16 fid) | |
2859 | { | |
2860 | int rc = 0; | |
2861 | int bytes_returned; | |
2862 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
2863 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
2864 | ||
2865 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
2866 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2867 | (void **) &pSMBr); | |
2868 | if (rc) | |
2869 | return rc; | |
2870 | ||
2871 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
2872 | ||
2873 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 2874 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
2875 | pSMB->MaxParameterCount = 0; |
2876 | pSMB->MaxDataCount = 0; | |
2877 | pSMB->MaxSetupCount = 4; | |
2878 | pSMB->Reserved = 0; | |
2879 | pSMB->ParameterOffset = 0; | |
bc09d141 | 2880 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
2881 | pSMB->DataOffset = |
2882 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
2883 | compression_state) - 4); /* 84 */ | |
2884 | pSMB->SetupCount = 4; | |
bc09d141 | 2885 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 2886 | pSMB->ParameterCount = 0; |
bc09d141 | 2887 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
2888 | pSMB->IsFsctl = 1; /* FSCTL */ |
2889 | pSMB->IsRootFlag = 0; | |
2890 | pSMB->Fid = fid; /* file handle always le */ | |
2891 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 2892 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
2893 | inc_rfc1001_len(pSMB, 5); |
2894 | ||
2895 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2896 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2897 | if (rc) | |
2898 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
2899 | ||
2900 | cifs_buf_release(pSMB); | |
2901 | ||
2902 | /* | |
2903 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2904 | * since file handle passed in no longer valid. | |
2905 | */ | |
2906 | return rc; | |
2907 | } | |
2908 | ||
2909 | ||
1da177e4 LT |
2910 | #ifdef CONFIG_CIFS_POSIX |
2911 | ||
bd9684b0 CB |
2912 | #ifdef CONFIG_FS_POSIX_ACL |
2913 | /** | |
2914 | * cifs_init_posix_acl - convert ACL from cifs to POSIX ACL format | |
2915 | * @ace: POSIX ACL entry to store converted ACL into | |
2916 | * @cifs_ace: ACL in cifs format | |
2917 | * | |
2918 | * Convert an Access Control Entry from wire format to local POSIX xattr | |
2919 | * format. | |
2920 | * | |
2921 | * Note that the @cifs_uid member is used to store both {g,u}id_t. | |
2922 | */ | |
2923 | static void cifs_init_posix_acl(struct posix_acl_entry *ace, | |
2924 | struct cifs_posix_ace *cifs_ace) | |
2925 | { | |
2926 | /* u8 cifs fields do not need le conversion */ | |
2927 | ace->e_perm = cifs_ace->cifs_e_perm; | |
2928 | ace->e_tag = cifs_ace->cifs_e_tag; | |
2929 | ||
2930 | switch (ace->e_tag) { | |
2931 | case ACL_USER: | |
2932 | ace->e_uid = make_kuid(&init_user_ns, | |
2933 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2934 | break; | |
2935 | case ACL_GROUP: | |
2936 | ace->e_gid = make_kgid(&init_user_ns, | |
2937 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2938 | break; | |
2939 | } | |
2940 | return; | |
2941 | } | |
2942 | ||
2943 | /** | |
2944 | * cifs_to_posix_acl - copy cifs ACL format to POSIX ACL format | |
2945 | * @acl: ACLs returned in POSIX ACL format | |
2946 | * @src: ACLs in cifs format | |
2947 | * @acl_type: type of POSIX ACL requested | |
2948 | * @size_of_data_area: size of SMB we got | |
2949 | * | |
2950 | * This function converts ACLs from cifs format to POSIX ACL format. | |
2951 | * If @acl is NULL then the size of the buffer required to store POSIX ACLs in | |
2952 | * their uapi format is returned. | |
2953 | */ | |
2954 | static int cifs_to_posix_acl(struct posix_acl **acl, char *src, | |
2955 | const int acl_type, const int size_of_data_area) | |
2956 | { | |
2957 | int size = 0; | |
2958 | __u16 count; | |
2959 | struct cifs_posix_ace *pACE; | |
2960 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2961 | struct posix_acl *kacl = NULL; | |
2962 | struct posix_acl_entry *pa, *pe; | |
2963 | ||
2964 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2965 | return -EOPNOTSUPP; | |
2966 | ||
2967 | if (acl_type == ACL_TYPE_ACCESS) { | |
2968 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2969 | pACE = &cifs_acl->ace_array[0]; | |
2970 | size = sizeof(struct cifs_posix_acl); | |
2971 | size += sizeof(struct cifs_posix_ace) * count; | |
2972 | /* check if we would go beyond end of SMB */ | |
2973 | if (size_of_data_area < size) { | |
2974 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", | |
2975 | size_of_data_area, size); | |
2976 | return -EINVAL; | |
2977 | } | |
2978 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
2979 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2980 | size = sizeof(struct cifs_posix_acl); | |
2981 | size += sizeof(struct cifs_posix_ace) * count; | |
2982 | /* skip past access ACEs to get to default ACEs */ | |
2983 | pACE = &cifs_acl->ace_array[count]; | |
2984 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2985 | size += sizeof(struct cifs_posix_ace) * count; | |
2986 | /* check if we would go beyond end of SMB */ | |
2987 | if (size_of_data_area < size) | |
2988 | return -EINVAL; | |
2989 | } else { | |
2990 | /* illegal type */ | |
2991 | return -EINVAL; | |
2992 | } | |
2993 | ||
2994 | /* Allocate number of POSIX ACLs to store in VFS format. */ | |
2995 | kacl = posix_acl_alloc(count, GFP_NOFS); | |
2996 | if (!kacl) | |
2997 | return -ENOMEM; | |
2998 | ||
2999 | FOREACH_ACL_ENTRY(pa, kacl, pe) { | |
3000 | cifs_init_posix_acl(pa, pACE); | |
3001 | pACE++; | |
3002 | } | |
3003 | ||
3004 | *acl = kacl; | |
3005 | return 0; | |
3006 | } | |
3007 | ||
dc1af4c4 CB |
3008 | /** |
3009 | * cifs_init_ace - convert ACL entry from POSIX ACL to cifs format | |
3010 | * @cifs_ace: the cifs ACL entry to store into | |
3011 | * @local_ace: the POSIX ACL entry to convert | |
3012 | */ | |
3013 | static void cifs_init_ace(struct cifs_posix_ace *cifs_ace, | |
3014 | const struct posix_acl_entry *local_ace) | |
3015 | { | |
3016 | cifs_ace->cifs_e_perm = local_ace->e_perm; | |
3017 | cifs_ace->cifs_e_tag = local_ace->e_tag; | |
3018 | ||
3019 | switch (local_ace->e_tag) { | |
3020 | case ACL_USER: | |
3021 | cifs_ace->cifs_uid = | |
3022 | cpu_to_le64(from_kuid(&init_user_ns, local_ace->e_uid)); | |
3023 | break; | |
3024 | case ACL_GROUP: | |
3025 | cifs_ace->cifs_uid = | |
3026 | cpu_to_le64(from_kgid(&init_user_ns, local_ace->e_gid)); | |
3027 | break; | |
3028 | default: | |
3029 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
3030 | } | |
3031 | } | |
3032 | ||
3033 | /** | |
3034 | * posix_acl_to_cifs - convert ACLs from POSIX ACL to cifs format | |
3035 | * @parm_data: ACLs in cifs format to conver to | |
3036 | * @acl: ACLs in POSIX ACL format to convert from | |
3037 | * @acl_type: the type of POSIX ACLs stored in @acl | |
3038 | * | |
3039 | * Return: the number cifs ACL entries after conversion | |
3040 | */ | |
3041 | static __u16 posix_acl_to_cifs(char *parm_data, const struct posix_acl *acl, | |
3042 | const int acl_type) | |
3043 | { | |
3044 | __u16 rc = 0; | |
3045 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; | |
3046 | const struct posix_acl_entry *pa, *pe; | |
3047 | int count; | |
3048 | int i = 0; | |
3049 | ||
3050 | if ((acl == NULL) || (cifs_acl == NULL)) | |
3051 | return 0; | |
3052 | ||
3053 | count = acl->a_count; | |
3054 | cifs_dbg(FYI, "setting acl with %d entries\n", count); | |
3055 | ||
3056 | /* | |
3057 | * Note that the uapi POSIX ACL version is verified by the VFS and is | |
3058 | * independent of the cifs ACL version. Changing the POSIX ACL version | |
3059 | * is a uapi change and if it's changed we will pass down the POSIX ACL | |
3060 | * version in struct posix_acl from the VFS. For now there's really | |
3061 | * only one that all filesystems know how to deal with. | |
3062 | */ | |
3063 | cifs_acl->version = cpu_to_le16(1); | |
3064 | if (acl_type == ACL_TYPE_ACCESS) { | |
3065 | cifs_acl->access_entry_count = cpu_to_le16(count); | |
3066 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); | |
3067 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
3068 | cifs_acl->default_entry_count = cpu_to_le16(count); | |
3069 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); | |
3070 | } else { | |
3071 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); | |
3072 | return 0; | |
3073 | } | |
3074 | FOREACH_ACL_ENTRY(pa, acl, pe) { | |
3075 | cifs_init_ace(&cifs_acl->ace_array[i++], pa); | |
3076 | } | |
3077 | if (rc == 0) { | |
3078 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); | |
3079 | rc += sizeof(struct cifs_posix_acl); | |
3080 | /* BB add check to make sure ACL does not overflow SMB */ | |
3081 | } | |
3082 | return rc; | |
3083 | } | |
3084 | ||
bd9684b0 CB |
3085 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, |
3086 | const unsigned char *searchName, struct posix_acl **acl, | |
3087 | const int acl_type, const struct nls_table *nls_codepage, | |
3088 | int remap) | |
3089 | { | |
3090 | /* SMB_QUERY_POSIX_ACL */ | |
3091 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3092 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3093 | int rc = 0; | |
3094 | int bytes_returned; | |
3095 | int name_len; | |
3096 | __u16 params, byte_count; | |
3097 | ||
3098 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); | |
3099 | ||
3100 | queryAclRetry: | |
3101 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3102 | (void **) &pSMBr); | |
3103 | if (rc) | |
3104 | return rc; | |
3105 | ||
3106 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3107 | name_len = | |
3108 | cifsConvertToUTF16((__le16 *) pSMB->FileName, | |
3109 | searchName, PATH_MAX, nls_codepage, | |
3110 | remap); | |
3111 | name_len++; /* trailing null */ | |
3112 | name_len *= 2; | |
3113 | pSMB->FileName[name_len] = 0; | |
3114 | pSMB->FileName[name_len+1] = 0; | |
3115 | } else { | |
3116 | name_len = copy_path_name(pSMB->FileName, searchName); | |
3117 | } | |
3118 | ||
3119 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3120 | pSMB->TotalDataCount = 0; | |
3121 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3122 | /* BB find exact max data count below from sess structure BB */ | |
3123 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3124 | pSMB->MaxSetupCount = 0; | |
3125 | pSMB->Reserved = 0; | |
3126 | pSMB->Flags = 0; | |
3127 | pSMB->Timeout = 0; | |
3128 | pSMB->Reserved2 = 0; | |
3129 | pSMB->ParameterOffset = cpu_to_le16( | |
3130 | offsetof(struct smb_com_transaction2_qpi_req, | |
3131 | InformationLevel) - 4); | |
3132 | pSMB->DataCount = 0; | |
3133 | pSMB->DataOffset = 0; | |
3134 | pSMB->SetupCount = 1; | |
3135 | pSMB->Reserved3 = 0; | |
3136 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3137 | byte_count = params + 1 /* pad */ ; | |
3138 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3139 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3140 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3141 | pSMB->Reserved4 = 0; | |
3142 | inc_rfc1001_len(pSMB, byte_count); | |
3143 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3144 | ||
3145 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3146 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3147 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); | |
3148 | if (rc) { | |
3149 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); | |
3150 | } else { | |
3151 | /* decode response */ | |
3152 | ||
3153 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3154 | /* BB also check enough total bytes returned */ | |
3155 | if (rc || get_bcc(&pSMBr->hdr) < 2) | |
3156 | rc = -EIO; /* bad smb */ | |
3157 | else { | |
3158 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3159 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3160 | rc = cifs_to_posix_acl(acl, | |
3161 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
3162 | acl_type, count); | |
3163 | } | |
3164 | } | |
3165 | cifs_buf_release(pSMB); | |
3166 | /* | |
3167 | * The else branch after SendReceive() doesn't return EAGAIN so if we | |
3168 | * allocated @acl in cifs_to_posix_acl() we are guaranteed to return | |
3169 | * here and don't leak POSIX ACLs. | |
3170 | */ | |
3171 | if (rc == -EAGAIN) | |
3172 | goto queryAclRetry; | |
3173 | return rc; | |
3174 | } | |
dc1af4c4 CB |
3175 | |
3176 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3177 | const unsigned char *fileName, const struct posix_acl *acl, | |
3178 | const int acl_type, const struct nls_table *nls_codepage, | |
3179 | int remap) | |
3180 | { | |
3181 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3182 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3183 | char *parm_data; | |
3184 | int name_len; | |
3185 | int rc = 0; | |
3186 | int bytes_returned = 0; | |
3187 | __u16 params, byte_count, data_count, param_offset, offset; | |
3188 | ||
3189 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); | |
3190 | setAclRetry: | |
3191 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3192 | (void **) &pSMBr); | |
3193 | if (rc) | |
3194 | return rc; | |
3195 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3196 | name_len = | |
3197 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, | |
3198 | PATH_MAX, nls_codepage, remap); | |
3199 | name_len++; /* trailing null */ | |
3200 | name_len *= 2; | |
3201 | } else { | |
3202 | name_len = copy_path_name(pSMB->FileName, fileName); | |
3203 | } | |
3204 | params = 6 + name_len; | |
3205 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3206 | /* BB find max SMB size from sess */ | |
3207 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3208 | pSMB->MaxSetupCount = 0; | |
3209 | pSMB->Reserved = 0; | |
3210 | pSMB->Flags = 0; | |
3211 | pSMB->Timeout = 0; | |
3212 | pSMB->Reserved2 = 0; | |
3213 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
3214 | InformationLevel) - 4; | |
3215 | offset = param_offset + params; | |
3216 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3217 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3218 | ||
3219 | /* convert to on the wire format for POSIX ACL */ | |
3220 | data_count = posix_acl_to_cifs(parm_data, acl, acl_type); | |
3221 | ||
3222 | if (data_count == 0) { | |
3223 | rc = -EOPNOTSUPP; | |
3224 | goto setACLerrorExit; | |
3225 | } | |
3226 | pSMB->DataOffset = cpu_to_le16(offset); | |
3227 | pSMB->SetupCount = 1; | |
3228 | pSMB->Reserved3 = 0; | |
3229 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3230 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3231 | byte_count = 3 /* pad */ + params + data_count; | |
3232 | pSMB->DataCount = cpu_to_le16(data_count); | |
3233 | pSMB->TotalDataCount = pSMB->DataCount; | |
3234 | pSMB->ParameterCount = cpu_to_le16(params); | |
3235 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3236 | pSMB->Reserved4 = 0; | |
3237 | inc_rfc1001_len(pSMB, byte_count); | |
3238 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3239 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3240 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3241 | if (rc) | |
3242 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); | |
3243 | ||
3244 | setACLerrorExit: | |
3245 | cifs_buf_release(pSMB); | |
3246 | if (rc == -EAGAIN) | |
3247 | goto setAclRetry; | |
3248 | return rc; | |
3249 | } | |
bd9684b0 CB |
3250 | #else |
3251 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3252 | const unsigned char *searchName, struct posix_acl **acl, | |
3253 | const int acl_type, const struct nls_table *nls_codepage, | |
3254 | int remap) | |
3255 | { | |
3256 | return -EOPNOTSUPP; | |
3257 | } | |
dc1af4c4 CB |
3258 | |
3259 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3260 | const unsigned char *fileName, const struct posix_acl *acl, | |
3261 | const int acl_type, const struct nls_table *nls_codepage, | |
3262 | int remap) | |
3263 | { | |
3264 | return -EOPNOTSUPP; | |
3265 | } | |
bd9684b0 CB |
3266 | #endif /* CONFIG_FS_POSIX_ACL */ |
3267 | ||
f654bac2 | 3268 | int |
6d5786a3 | 3269 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3270 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3271 | { |
50c2f753 SF |
3272 | int rc = 0; |
3273 | struct smb_t2_qfi_req *pSMB = NULL; | |
3274 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3275 | int bytes_returned; | |
3276 | __u16 params, byte_count; | |
f654bac2 | 3277 | |
f96637be | 3278 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3279 | if (tcon == NULL) |
3280 | return -ENODEV; | |
f654bac2 SF |
3281 | |
3282 | GetExtAttrRetry: | |
790fe579 | 3283 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
fb157ed2 | 3284 | (void **) &pSMBr); |
790fe579 SF |
3285 | if (rc) |
3286 | return rc; | |
f654bac2 | 3287 | |
ad7a2926 | 3288 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3289 | pSMB->t2.TotalDataCount = 0; |
3290 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3291 | /* BB find exact max data count below from sess structure BB */ | |
3292 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3293 | pSMB->t2.MaxSetupCount = 0; | |
3294 | pSMB->t2.Reserved = 0; | |
3295 | pSMB->t2.Flags = 0; | |
3296 | pSMB->t2.Timeout = 0; | |
3297 | pSMB->t2.Reserved2 = 0; | |
3298 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3299 | Fid) - 4); | |
3300 | pSMB->t2.DataCount = 0; | |
3301 | pSMB->t2.DataOffset = 0; | |
3302 | pSMB->t2.SetupCount = 1; | |
3303 | pSMB->t2.Reserved3 = 0; | |
3304 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3305 | byte_count = params + 1 /* pad */ ; | |
3306 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3307 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3308 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3309 | pSMB->Pad = 0; | |
f654bac2 | 3310 | pSMB->Fid = netfid; |
be8e3b00 | 3311 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3312 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3313 | ||
3314 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3315 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3316 | if (rc) { | |
f96637be | 3317 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3318 | } else { |
3319 | /* decode response */ | |
3320 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3321 | /* BB also check enough total bytes returned */ |
820a803f | 3322 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3323 | /* If rc should we check for EOPNOSUPP and |
3324 | disable the srvino flag? or in caller? */ | |
3325 | rc = -EIO; /* bad smb */ | |
3326 | else { | |
3327 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3328 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3329 | struct file_chattr_info *pfinfo; | |
fb157ed2 | 3330 | |
790fe579 | 3331 | if (count != 16) { |
a0a3036b | 3332 | cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n"); |
790fe579 SF |
3333 | rc = -EIO; |
3334 | goto GetExtAttrOut; | |
3335 | } | |
3336 | pfinfo = (struct file_chattr_info *) | |
3337 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3338 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3339 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3340 | } |
3341 | } | |
f654bac2 | 3342 | GetExtAttrOut: |
790fe579 SF |
3343 | cifs_buf_release(pSMB); |
3344 | if (rc == -EAGAIN) | |
3345 | goto GetExtAttrRetry; | |
3346 | return rc; | |
f654bac2 SF |
3347 | } |
3348 | ||
f654bac2 | 3349 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3350 | |
79df1bae JL |
3351 | /* |
3352 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3353 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3354 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3355 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3356 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3357 | * by caller | |
3358 | */ | |
3359 | static int | |
3360 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3361 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3362 | void **ret_buf) |
3363 | { | |
3364 | int rc; | |
3365 | __u32 temp_offset; | |
3366 | struct smb_com_ntransact_req *pSMB; | |
3367 | ||
3368 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3369 | (void **)&pSMB); | |
3370 | if (rc) | |
3371 | return rc; | |
3372 | *ret_buf = (void *)pSMB; | |
3373 | pSMB->Reserved = 0; | |
3374 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3375 | pSMB->TotalDataCount = 0; | |
c974befa | 3376 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3377 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3378 | pSMB->DataCount = pSMB->TotalDataCount; | |
3379 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3380 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3381 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3382 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3383 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3384 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3385 | return 0; | |
3386 | } | |
3387 | ||
3388 | static int | |
3389 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3390 | __u32 *pparmlen, __u32 *pdatalen) | |
3391 | { | |
3392 | char *end_of_smb; | |
3393 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3394 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3395 | u16 bcc; |
79df1bae JL |
3396 | |
3397 | *pdatalen = 0; | |
3398 | *pparmlen = 0; | |
3399 | ||
3400 | if (buf == NULL) | |
3401 | return -EINVAL; | |
3402 | ||
3403 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3404 | ||
820a803f JL |
3405 | bcc = get_bcc(&pSMBr->hdr); |
3406 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3407 | (char *)&pSMBr->ByteCount; |
3408 | ||
3409 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3410 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3411 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3412 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3413 | ||
3414 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3415 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3416 | ||
3417 | /* should we also check that parm and data areas do not overlap? */ | |
3418 | if (*ppparm > end_of_smb) { | |
f96637be | 3419 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3420 | return -EINVAL; |
3421 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3422 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3423 | return -EINVAL; |
3424 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3425 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3426 | return -EINVAL; |
3427 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3428 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3429 | *ppdata, data_count, (data_count + *ppdata), | |
3430 | end_of_smb, pSMBr); | |
79df1bae | 3431 | return -EINVAL; |
820a803f | 3432 | } else if (parm_count + data_count > bcc) { |
f96637be | 3433 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3434 | return -EINVAL; |
3435 | } | |
3436 | *pdatalen = data_count; | |
3437 | *pparmlen = parm_count; | |
3438 | return 0; | |
3439 | } | |
3440 | ||
0a4b92c0 SF |
3441 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3442 | int | |
6d5786a3 | 3443 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3444 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3445 | { |
3446 | int rc = 0; | |
3447 | int buf_type = 0; | |
ad7a2926 | 3448 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3449 | struct kvec iov[1]; |
da502f7d | 3450 | struct kvec rsp_iov; |
0a4b92c0 | 3451 | |
f96637be | 3452 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3453 | |
630f3f0c SF |
3454 | *pbuflen = 0; |
3455 | *acl_inf = NULL; | |
3456 | ||
b9c7a2bb | 3457 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3458 | 8 /* parm len */, tcon, (void **) &pSMB); |
3459 | if (rc) | |
3460 | return rc; | |
3461 | ||
3462 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3463 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3464 | pSMB->MaxSetupCount = 0; | |
3465 | pSMB->Fid = fid; /* file handle always le */ | |
3466 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3467 | CIFS_ACL_DACL); | |
3468 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3469 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3470 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3471 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3472 | |
a761ac57 | 3473 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3474 | 0, &rsp_iov); |
3475 | cifs_small_buf_release(pSMB); | |
44c58186 | 3476 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3477 | if (rc) { |
f96637be | 3478 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3479 | } else { /* decode response */ |
ad7a2926 | 3480 | __le32 *parm; |
630f3f0c SF |
3481 | __u32 parm_len; |
3482 | __u32 acl_len; | |
50c2f753 | 3483 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3484 | char *pdata; |
0a4b92c0 SF |
3485 | |
3486 | /* validate_nttransact */ | |
da502f7d | 3487 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3488 | &pdata, &parm_len, pbuflen); |
790fe579 | 3489 | if (rc) |
0a4b92c0 | 3490 | goto qsec_out; |
da502f7d | 3491 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3492 | |
f96637be JP |
3493 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3494 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3495 | |
3496 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3497 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3498 | *pbuflen = 0; |
0a4b92c0 SF |
3499 | goto qsec_out; |
3500 | } | |
3501 | ||
3502 | /* BB check that data area is minimum length and as big as acl_len */ | |
3503 | ||
af6f4612 | 3504 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3505 | if (acl_len != *pbuflen) { |
f96637be JP |
3506 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3507 | acl_len, *pbuflen); | |
630f3f0c SF |
3508 | if (*pbuflen > acl_len) |
3509 | *pbuflen = acl_len; | |
3510 | } | |
0a4b92c0 | 3511 | |
630f3f0c SF |
3512 | /* check if buffer is big enough for the acl |
3513 | header followed by the smallest SID */ | |
3514 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3515 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3516 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3517 | rc = -EINVAL; |
3518 | *pbuflen = 0; | |
3519 | } else { | |
f7f7c185 | 3520 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3521 | if (*acl_inf == NULL) { |
3522 | *pbuflen = 0; | |
3523 | rc = -ENOMEM; | |
3524 | } | |
630f3f0c | 3525 | } |
0a4b92c0 SF |
3526 | } |
3527 | qsec_out: | |
da502f7d | 3528 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3529 | return rc; |
3530 | } | |
97837582 SF |
3531 | |
3532 | int | |
6d5786a3 | 3533 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3534 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3535 | { |
3536 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3537 | int rc = 0; | |
3538 | int bytes_returned = 0; | |
3539 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3540 | void *pSMBr; |
97837582 SF |
3541 | |
3542 | setCifsAclRetry: | |
b2a3ad9c | 3543 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3544 | if (rc) |
b2a3ad9c | 3545 | return rc; |
97837582 SF |
3546 | |
3547 | pSMB->MaxSetupCount = 0; | |
3548 | pSMB->Reserved = 0; | |
3549 | ||
3550 | param_count = 8; | |
3551 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3552 | data_count = acllen; | |
3553 | data_offset = param_offset + param_count; | |
3554 | byte_count = 3 /* pad */ + param_count; | |
3555 | ||
3556 | pSMB->DataCount = cpu_to_le32(data_count); | |
3557 | pSMB->TotalDataCount = pSMB->DataCount; | |
3558 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3559 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3560 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3561 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3562 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3563 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3564 | pSMB->SetupCount = 0; | |
3565 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3566 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3567 | ||
3568 | pSMB->Fid = fid; /* file handle always le */ | |
3569 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3570 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3571 | |
3572 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3573 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3574 | data_offset, pntsd, acllen); | |
be8e3b00 | 3575 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3576 | } else |
be8e3b00 | 3577 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3578 | |
3579 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3580 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3581 | ||
f96637be JP |
3582 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3583 | bytes_returned, rc); | |
97837582 | 3584 | if (rc) |
f96637be | 3585 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3586 | cifs_buf_release(pSMB); |
3587 | ||
3588 | if (rc == -EAGAIN) | |
3589 | goto setCifsAclRetry; | |
3590 | ||
3591 | return (rc); | |
3592 | } | |
3593 | ||
0a4b92c0 | 3594 | |
6b8edfe0 SF |
3595 | /* Legacy Query Path Information call for lookup to old servers such |
3596 | as Win9x/WinME */ | |
68889f26 PS |
3597 | int |
3598 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3599 | const char *search_name, FILE_ALL_INFO *data, | |
3600 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3601 | { |
ad7a2926 SF |
3602 | QUERY_INFORMATION_REQ *pSMB; |
3603 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3604 | int rc = 0; |
3605 | int bytes_returned; | |
3606 | int name_len; | |
3607 | ||
f96637be | 3608 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3609 | QInfRetry: |
3610 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3611 | (void **) &pSMBr); |
6b8edfe0 SF |
3612 | if (rc) |
3613 | return rc; | |
3614 | ||
3615 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3616 | name_len = | |
acbbb76a | 3617 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3618 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3619 | remap); |
6b8edfe0 SF |
3620 | name_len++; /* trailing null */ |
3621 | name_len *= 2; | |
50c2f753 | 3622 | } else { |
340625e6 | 3623 | name_len = copy_path_name(pSMB->FileName, search_name); |
6b8edfe0 SF |
3624 | } |
3625 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3626 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3627 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3628 | pSMB->ByteCount = cpu_to_le16(name_len); |
3629 | ||
3630 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3631 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3632 | if (rc) { |
f96637be | 3633 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3634 | } else if (data) { |
95390201 | 3635 | struct timespec64 ts; |
1bd5bbcb | 3636 | __u32 time = le32_to_cpu(pSMBr->last_write_time); |
ad7a2926 SF |
3637 | |
3638 | /* decode response */ | |
1bd5bbcb | 3639 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3640 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3641 | ts.tv_nsec = 0; |
3642 | ts.tv_sec = time; | |
3643 | /* decode time fields */ | |
68889f26 PS |
3644 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3645 | data->LastWriteTime = data->ChangeTime; | |
3646 | data->LastAccessTime = 0; | |
3647 | data->AllocationSize = | |
70ca734a | 3648 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3649 | data->EndOfFile = data->AllocationSize; |
3650 | data->Attributes = | |
70ca734a | 3651 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3652 | } else |
3653 | rc = -EIO; /* bad buffer passed in */ | |
3654 | ||
3655 | cifs_buf_release(pSMB); | |
3656 | ||
3657 | if (rc == -EAGAIN) | |
3658 | goto QInfRetry; | |
3659 | ||
3660 | return rc; | |
3661 | } | |
3662 | ||
bcd5357f | 3663 | int |
6d5786a3 | 3664 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3665 | u16 netfid, FILE_ALL_INFO *pFindData) |
3666 | { | |
3667 | struct smb_t2_qfi_req *pSMB = NULL; | |
3668 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3669 | int rc = 0; | |
3670 | int bytes_returned; | |
3671 | __u16 params, byte_count; | |
3672 | ||
3673 | QFileInfoRetry: | |
3674 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3675 | (void **) &pSMBr); | |
3676 | if (rc) | |
3677 | return rc; | |
3678 | ||
3679 | params = 2 /* level */ + 2 /* fid */; | |
3680 | pSMB->t2.TotalDataCount = 0; | |
3681 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3682 | /* BB find exact max data count below from sess structure BB */ | |
3683 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3684 | pSMB->t2.MaxSetupCount = 0; | |
3685 | pSMB->t2.Reserved = 0; | |
3686 | pSMB->t2.Flags = 0; | |
3687 | pSMB->t2.Timeout = 0; | |
3688 | pSMB->t2.Reserved2 = 0; | |
3689 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3690 | Fid) - 4); | |
3691 | pSMB->t2.DataCount = 0; | |
3692 | pSMB->t2.DataOffset = 0; | |
3693 | pSMB->t2.SetupCount = 1; | |
3694 | pSMB->t2.Reserved3 = 0; | |
3695 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3696 | byte_count = params + 1 /* pad */ ; | |
3697 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3698 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3699 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3700 | pSMB->Pad = 0; | |
3701 | pSMB->Fid = netfid; | |
be8e3b00 | 3702 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3703 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 3704 | |
bcd5357f JL |
3705 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3706 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3707 | if (rc) { | |
a0a3036b | 3708 | cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc); |
bcd5357f JL |
3709 | } else { /* decode response */ |
3710 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3711 | |
bcd5357f JL |
3712 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3713 | rc = -EIO; | |
820a803f | 3714 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3715 | rc = -EIO; /* bad smb */ |
3716 | else if (pFindData) { | |
3717 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3718 | memcpy((char *) pFindData, | |
3719 | (char *) &pSMBr->hdr.Protocol + | |
3720 | data_offset, sizeof(FILE_ALL_INFO)); | |
3721 | } else | |
3722 | rc = -ENOMEM; | |
3723 | } | |
3724 | cifs_buf_release(pSMB); | |
3725 | if (rc == -EAGAIN) | |
3726 | goto QFileInfoRetry; | |
6b8edfe0 | 3727 | |
bcd5357f JL |
3728 | return rc; |
3729 | } | |
6b8edfe0 | 3730 | |
1da177e4 | 3731 | int |
6d5786a3 | 3732 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 3733 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 3734 | int legacy /* old style infolevel */, |
737b758c | 3735 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 3736 | { |
68889f26 | 3737 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
3738 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
3739 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3740 | int rc = 0; | |
3741 | int bytes_returned; | |
3742 | int name_len; | |
3743 | __u16 params, byte_count; | |
3744 | ||
f96637be | 3745 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
3746 | QPathInfoRetry: |
3747 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3748 | (void **) &pSMBr); | |
3749 | if (rc) | |
3750 | return rc; | |
3751 | ||
3752 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3753 | name_len = | |
68889f26 | 3754 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 3755 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3756 | name_len++; /* trailing null */ |
3757 | name_len *= 2; | |
340625e6 RS |
3758 | } else { |
3759 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
3760 | } |
3761 | ||
50c2f753 | 3762 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3763 | pSMB->TotalDataCount = 0; |
3764 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3765 | /* BB find exact max SMB PDU from sess structure BB */ |
3766 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3767 | pSMB->MaxSetupCount = 0; |
3768 | pSMB->Reserved = 0; | |
3769 | pSMB->Flags = 0; | |
3770 | pSMB->Timeout = 0; | |
3771 | pSMB->Reserved2 = 0; | |
3772 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3773 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3774 | pSMB->DataCount = 0; |
3775 | pSMB->DataOffset = 0; | |
3776 | pSMB->SetupCount = 1; | |
3777 | pSMB->Reserved3 = 0; | |
3778 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3779 | byte_count = params + 1 /* pad */ ; | |
3780 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3781 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3782 | if (legacy) |
acf1a1b1 SF |
3783 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3784 | else | |
3785 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3786 | pSMB->Reserved4 = 0; |
be8e3b00 | 3787 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3788 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3789 | ||
3790 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3791 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3792 | if (rc) { | |
f96637be | 3793 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
3794 | } else { /* decode response */ |
3795 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3796 | ||
acf1a1b1 SF |
3797 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3798 | rc = -EIO; | |
820a803f | 3799 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3800 | rc = -EIO; /* bad smb */ |
820a803f | 3801 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3802 | rc = -EIO; /* 24 or 26 expected but we do not read |
3803 | last field */ | |
68889f26 | 3804 | else if (data) { |
acf1a1b1 | 3805 | int size; |
1da177e4 | 3806 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 3807 | |
68889f26 PS |
3808 | /* |
3809 | * On legacy responses we do not read the last field, | |
3810 | * EAsize, fortunately since it varies by subdialect and | |
3811 | * also note it differs on Set vs Get, ie two bytes or 4 | |
3812 | * bytes depending but we don't care here. | |
3813 | */ | |
ad7a2926 | 3814 | if (legacy) |
acf1a1b1 SF |
3815 | size = sizeof(FILE_INFO_STANDARD); |
3816 | else | |
3817 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 3818 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 3819 | data_offset, size); |
1da177e4 LT |
3820 | } else |
3821 | rc = -ENOMEM; | |
3822 | } | |
3823 | cifs_buf_release(pSMB); | |
3824 | if (rc == -EAGAIN) | |
3825 | goto QPathInfoRetry; | |
3826 | ||
3827 | return rc; | |
3828 | } | |
3829 | ||
c8634fd3 | 3830 | int |
6d5786a3 | 3831 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
3832 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
3833 | { | |
3834 | struct smb_t2_qfi_req *pSMB = NULL; | |
3835 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3836 | int rc = 0; | |
3837 | int bytes_returned; | |
3838 | __u16 params, byte_count; | |
3839 | ||
3840 | UnixQFileInfoRetry: | |
3841 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3842 | (void **) &pSMBr); | |
3843 | if (rc) | |
3844 | return rc; | |
3845 | ||
3846 | params = 2 /* level */ + 2 /* fid */; | |
3847 | pSMB->t2.TotalDataCount = 0; | |
3848 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3849 | /* BB find exact max data count below from sess structure BB */ | |
3850 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3851 | pSMB->t2.MaxSetupCount = 0; | |
3852 | pSMB->t2.Reserved = 0; | |
3853 | pSMB->t2.Flags = 0; | |
3854 | pSMB->t2.Timeout = 0; | |
3855 | pSMB->t2.Reserved2 = 0; | |
3856 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3857 | Fid) - 4); | |
3858 | pSMB->t2.DataCount = 0; | |
3859 | pSMB->t2.DataOffset = 0; | |
3860 | pSMB->t2.SetupCount = 1; | |
3861 | pSMB->t2.Reserved3 = 0; | |
3862 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3863 | byte_count = params + 1 /* pad */ ; | |
3864 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3865 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3866 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3867 | pSMB->Pad = 0; | |
3868 | pSMB->Fid = netfid; | |
be8e3b00 | 3869 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3870 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
3871 | |
3872 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3873 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3874 | if (rc) { | |
a0a3036b | 3875 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc); |
c8634fd3 JL |
3876 | } else { /* decode response */ |
3877 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3878 | ||
820a803f | 3879 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3880 | 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 |
3881 | rc = -EIO; /* bad smb */ |
3882 | } else { | |
3883 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3884 | memcpy((char *) pFindData, | |
3885 | (char *) &pSMBr->hdr.Protocol + | |
3886 | data_offset, | |
3887 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3888 | } | |
3889 | } | |
3890 | ||
3891 | cifs_buf_release(pSMB); | |
3892 | if (rc == -EAGAIN) | |
3893 | goto UnixQFileInfoRetry; | |
3894 | ||
3895 | return rc; | |
3896 | } | |
3897 | ||
1da177e4 | 3898 | int |
6d5786a3 | 3899 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3900 | const unsigned char *searchName, |
582d21e5 | 3901 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3902 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3903 | { |
3904 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3905 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3906 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3907 | int rc = 0; | |
3908 | int bytes_returned = 0; | |
3909 | int name_len; | |
3910 | __u16 params, byte_count; | |
3911 | ||
f96637be | 3912 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
3913 | UnixQPathInfoRetry: |
3914 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3915 | (void **) &pSMBr); | |
3916 | if (rc) | |
3917 | return rc; | |
3918 | ||
3919 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3920 | name_len = | |
acbbb76a SF |
3921 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
3922 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3923 | name_len++; /* trailing null */ |
3924 | name_len *= 2; | |
340625e6 RS |
3925 | } else { |
3926 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3927 | } |
3928 | ||
50c2f753 | 3929 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3930 | pSMB->TotalDataCount = 0; |
3931 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3932 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3933 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3934 | pSMB->MaxSetupCount = 0; |
3935 | pSMB->Reserved = 0; | |
3936 | pSMB->Flags = 0; | |
3937 | pSMB->Timeout = 0; | |
3938 | pSMB->Reserved2 = 0; | |
3939 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3940 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3941 | pSMB->DataCount = 0; |
3942 | pSMB->DataOffset = 0; | |
3943 | pSMB->SetupCount = 1; | |
3944 | pSMB->Reserved3 = 0; | |
3945 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3946 | byte_count = params + 1 /* pad */ ; | |
3947 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3948 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3949 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3950 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3951 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3952 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3953 | ||
3954 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3955 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3956 | if (rc) { | |
a0a3036b | 3957 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc); |
1da177e4 LT |
3958 | } else { /* decode response */ |
3959 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3960 | ||
820a803f | 3961 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3962 | 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 |
3963 | rc = -EIO; /* bad smb */ |
3964 | } else { | |
3965 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3966 | memcpy((char *) pFindData, | |
3967 | (char *) &pSMBr->hdr.Protocol + | |
3968 | data_offset, | |
630f3f0c | 3969 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3970 | } |
3971 | } | |
3972 | cifs_buf_release(pSMB); | |
3973 | if (rc == -EAGAIN) | |
3974 | goto UnixQPathInfoRetry; | |
3975 | ||
3976 | return rc; | |
3977 | } | |
3978 | ||
1da177e4 LT |
3979 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3980 | int | |
6d5786a3 | 3981 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 3982 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 3983 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 3984 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
3985 | { |
3986 | /* level 257 SMB_ */ | |
3987 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3988 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3989 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3990 | int rc = 0; |
3991 | int bytes_returned = 0; | |
c052e2b4 | 3992 | int name_len, remap; |
1da177e4 | 3993 | __u16 params, byte_count; |
c052e2b4 | 3994 | struct nls_table *nls_codepage; |
1da177e4 | 3995 | |
f96637be | 3996 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
3997 | |
3998 | findFirstRetry: | |
3999 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4000 | (void **) &pSMBr); | |
4001 | if (rc) | |
4002 | return rc; | |
4003 | ||
c052e2b4 | 4004 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 4005 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 4006 | |
1da177e4 LT |
4007 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4008 | name_len = | |
acbbb76a SF |
4009 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4010 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4011 | /* We can not add the asterik earlier in case |
4012 | it got remapped to 0xF03A as if it were part of the | |
4013 | directory name instead of a wildcard */ | |
1da177e4 | 4014 | name_len *= 2; |
c052e2b4 SP |
4015 | if (msearch) { |
4016 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4017 | pSMB->FileName[name_len+1] = 0; | |
4018 | pSMB->FileName[name_len+2] = '*'; | |
4019 | pSMB->FileName[name_len+3] = 0; | |
4020 | name_len += 4; /* now the trailing null */ | |
4021 | /* null terminate just in case */ | |
4022 | pSMB->FileName[name_len] = 0; | |
4023 | pSMB->FileName[name_len+1] = 0; | |
4024 | name_len += 2; | |
4025 | } | |
340625e6 RS |
4026 | } else { |
4027 | name_len = copy_path_name(pSMB->FileName, searchName); | |
c052e2b4 | 4028 | if (msearch) { |
340625e6 RS |
4029 | if (WARN_ON_ONCE(name_len > PATH_MAX-2)) |
4030 | name_len = PATH_MAX-2; | |
4031 | /* overwrite nul byte */ | |
4032 | pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb); | |
4033 | pSMB->FileName[name_len] = '*'; | |
4034 | pSMB->FileName[name_len+1] = 0; | |
4035 | name_len += 2; | |
c052e2b4 | 4036 | } |
1da177e4 LT |
4037 | } |
4038 | ||
4039 | params = 12 + name_len /* includes null */ ; | |
4040 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4041 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4042 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4043 | pSMB->MaxSetupCount = 0; |
4044 | pSMB->Reserved = 0; | |
4045 | pSMB->Flags = 0; | |
4046 | pSMB->Timeout = 0; | |
4047 | pSMB->Reserved2 = 0; | |
4048 | byte_count = params + 1 /* pad */ ; | |
4049 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4050 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4051 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4052 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4053 | - 4); | |
1da177e4 LT |
4054 | pSMB->DataCount = 0; |
4055 | pSMB->DataOffset = 0; | |
4056 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4057 | pSMB->Reserved3 = 0; | |
4058 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4059 | pSMB->SearchAttributes = | |
4060 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4061 | ATTR_DIRECTORY); | |
50c2f753 | 4062 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4063 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4064 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4065 | ||
4066 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4067 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4068 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4069 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4070 | ||
4071 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4072 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4073 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4074 | |
88274815 SF |
4075 | if (rc) {/* BB add logic to retry regular search if Unix search |
4076 | rejected unexpectedly by server */ | |
1da177e4 | 4077 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4078 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4079 | |
88274815 | 4080 | cifs_buf_release(pSMB); |
1da177e4 LT |
4081 | |
4082 | /* BB eventually could optimize out free and realloc of buf */ | |
4083 | /* for this case */ | |
4084 | if (rc == -EAGAIN) | |
4085 | goto findFirstRetry; | |
4086 | } else { /* decode response */ | |
4087 | /* BB remember to free buffer if error BB */ | |
4088 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4089 | if (rc == 0) { |
b77d753c SF |
4090 | unsigned int lnoff; |
4091 | ||
1da177e4 | 4092 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4093 | psrch_inf->unicode = true; |
1da177e4 | 4094 | else |
4b18f2a9 | 4095 | psrch_inf->unicode = false; |
1da177e4 LT |
4096 | |
4097 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
01d1bd76 | 4098 | psrch_inf->smallBuf = false; |
50c2f753 SF |
4099 | psrch_inf->srch_entries_start = |
4100 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4101 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4102 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4103 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4104 | ||
790fe579 | 4105 | if (parms->EndofSearch) |
4b18f2a9 | 4106 | psrch_inf->endOfSearch = true; |
1da177e4 | 4107 | else |
4b18f2a9 | 4108 | psrch_inf->endOfSearch = false; |
1da177e4 | 4109 | |
50c2f753 SF |
4110 | psrch_inf->entries_in_buffer = |
4111 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4112 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4113 | psrch_inf->entries_in_buffer; |
b77d753c | 4114 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4115 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4116 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4117 | psrch_inf->last_entry = NULL; |
4118 | return rc; | |
4119 | } | |
4120 | ||
0752f152 | 4121 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4122 | lnoff; |
4123 | ||
c052e2b4 SP |
4124 | if (pnetfid) |
4125 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4126 | } else { |
4127 | cifs_buf_release(pSMB); | |
4128 | } | |
4129 | } | |
4130 | ||
4131 | return rc; | |
4132 | } | |
4133 | ||
6d5786a3 PS |
4134 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4135 | __u16 searchHandle, __u16 search_flags, | |
4136 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4137 | { |
4138 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4139 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4140 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4141 | char *response_data; |
4142 | int rc = 0; | |
9438fabb JL |
4143 | int bytes_returned; |
4144 | unsigned int name_len; | |
1da177e4 LT |
4145 | __u16 params, byte_count; |
4146 | ||
f96637be | 4147 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4148 | |
4b18f2a9 | 4149 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4150 | return -ENOENT; |
4151 | ||
4152 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4153 | (void **) &pSMBr); | |
4154 | if (rc) | |
4155 | return rc; | |
4156 | ||
50c2f753 | 4157 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4158 | byte_count = 0; |
4159 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4160 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4161 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4162 | pSMB->MaxSetupCount = 0; |
4163 | pSMB->Reserved = 0; | |
4164 | pSMB->Flags = 0; | |
4165 | pSMB->Timeout = 0; | |
4166 | pSMB->Reserved2 = 0; | |
4167 | pSMB->ParameterOffset = cpu_to_le16( | |
4168 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4169 | pSMB->DataCount = 0; | |
4170 | pSMB->DataOffset = 0; | |
4171 | pSMB->SetupCount = 1; | |
4172 | pSMB->Reserved3 = 0; | |
4173 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4174 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4175 | pSMB->SearchCount = | |
630f3f0c | 4176 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4177 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4178 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4179 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4180 | |
4181 | name_len = psrch_inf->resume_name_len; | |
4182 | params += name_len; | |
790fe579 | 4183 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4184 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4185 | byte_count += name_len; | |
ef6724e3 SF |
4186 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4187 | pSMB->ResumeFileName[name_len] = 0; | |
4188 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4189 | } else { |
4190 | rc = -EINVAL; | |
4191 | goto FNext2_err_exit; | |
4192 | } | |
4193 | byte_count = params + 1 /* pad */ ; | |
4194 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4195 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4196 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4197 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4198 | |
1da177e4 LT |
4199 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4200 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4201 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4202 | if (rc) { |
4203 | if (rc == -EBADF) { | |
4b18f2a9 | 4204 | psrch_inf->endOfSearch = true; |
6353450a | 4205 | cifs_buf_release(pSMB); |
50c2f753 | 4206 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4207 | } else |
f96637be | 4208 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4209 | } else { /* decode response */ |
4210 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4211 | |
790fe579 | 4212 | if (rc == 0) { |
b77d753c SF |
4213 | unsigned int lnoff; |
4214 | ||
1da177e4 LT |
4215 | /* BB fixme add lock for file (srch_info) struct here */ |
4216 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4217 | psrch_inf->unicode = true; |
1da177e4 | 4218 | else |
4b18f2a9 | 4219 | psrch_inf->unicode = false; |
1da177e4 LT |
4220 | response_data = (char *) &pSMBr->hdr.Protocol + |
4221 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4222 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4223 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4224 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4225 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4226 | cifs_small_buf_release( |
4227 | psrch_inf->ntwrk_buf_start); | |
4228 | else | |
4229 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4230 | psrch_inf->srch_entries_start = response_data; |
4231 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
01d1bd76 | 4232 | psrch_inf->smallBuf = false; |
790fe579 | 4233 | if (parms->EndofSearch) |
4b18f2a9 | 4234 | psrch_inf->endOfSearch = true; |
1da177e4 | 4235 | else |
4b18f2a9 | 4236 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4237 | psrch_inf->entries_in_buffer = |
4238 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4239 | psrch_inf->index_of_last_entry += |
4240 | psrch_inf->entries_in_buffer; | |
b77d753c | 4241 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4242 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4243 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4244 | psrch_inf->last_entry = NULL; |
4245 | return rc; | |
4246 | } else | |
4247 | psrch_inf->last_entry = | |
4248 | psrch_inf->srch_entries_start + lnoff; | |
4249 | ||
f96637be JP |
4250 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4251 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4252 | |
4253 | /* BB fixme add unlock here */ | |
4254 | } | |
4255 | ||
4256 | } | |
4257 | ||
4258 | /* BB On error, should we leave previous search buf (and count and | |
4259 | last entry fields) intact or free the previous one? */ | |
4260 | ||
4261 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4262 | since file handle passed in no longer valid */ | |
4263 | FNext2_err_exit: | |
4264 | if (rc != 0) | |
4265 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4266 | return rc; |
4267 | } | |
4268 | ||
4269 | int | |
6d5786a3 | 4270 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4271 | const __u16 searchHandle) |
1da177e4 LT |
4272 | { |
4273 | int rc = 0; | |
4274 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4275 | |
f96637be | 4276 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4277 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4278 | ||
4279 | /* no sense returning error if session restarted | |
4280 | as file handle has been closed */ | |
790fe579 | 4281 | if (rc == -EAGAIN) |
1da177e4 LT |
4282 | return 0; |
4283 | if (rc) | |
4284 | return rc; | |
4285 | ||
1da177e4 LT |
4286 | pSMB->FileID = searchHandle; |
4287 | pSMB->ByteCount = 0; | |
792af7b0 | 4288 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4289 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4290 | if (rc) |
f96637be | 4291 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4292 | |
44c58186 | 4293 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4294 | |
4295 | /* Since session is dead, search handle closed on server already */ | |
4296 | if (rc == -EAGAIN) | |
4297 | rc = 0; | |
4298 | ||
4299 | return rc; | |
4300 | } | |
4301 | ||
1da177e4 | 4302 | int |
6d5786a3 | 4303 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4304 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4305 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4306 | { |
4307 | int rc = 0; | |
4308 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4309 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4310 | int name_len, bytes_returned; | |
4311 | __u16 params, byte_count; | |
4312 | ||
f96637be | 4313 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4314 | if (tcon == NULL) |
50c2f753 | 4315 | return -ENODEV; |
1da177e4 LT |
4316 | |
4317 | GetInodeNumberRetry: | |
4318 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4319 | (void **) &pSMBr); |
1da177e4 LT |
4320 | if (rc) |
4321 | return rc; | |
4322 | ||
1da177e4 LT |
4323 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4324 | name_len = | |
acbbb76a | 4325 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4326 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4327 | remap); |
1da177e4 LT |
4328 | name_len++; /* trailing null */ |
4329 | name_len *= 2; | |
340625e6 RS |
4330 | } else { |
4331 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4332 | } |
4333 | ||
4334 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4335 | pSMB->TotalDataCount = 0; | |
4336 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4337 | /* BB find exact max data count below from sess structure BB */ | |
4338 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4339 | pSMB->MaxSetupCount = 0; | |
4340 | pSMB->Reserved = 0; | |
4341 | pSMB->Flags = 0; | |
4342 | pSMB->Timeout = 0; | |
4343 | pSMB->Reserved2 = 0; | |
4344 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4345 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4346 | pSMB->DataCount = 0; |
4347 | pSMB->DataOffset = 0; | |
4348 | pSMB->SetupCount = 1; | |
4349 | pSMB->Reserved3 = 0; | |
4350 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4351 | byte_count = params + 1 /* pad */ ; | |
4352 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4353 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4354 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4355 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4356 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4357 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4358 | ||
4359 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4360 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4361 | if (rc) { | |
f96637be | 4362 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4363 | } else { |
4364 | /* decode response */ | |
4365 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4366 | /* BB also check enough total bytes returned */ |
820a803f | 4367 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4368 | /* If rc should we check for EOPNOSUPP and |
4369 | disable the srvino flag? or in caller? */ | |
4370 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4371 | else { |
1da177e4 LT |
4372 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4373 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4374 | struct file_internal_info *pfinfo; |
1da177e4 | 4375 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4376 | if (count < 8) { |
a0a3036b | 4377 | cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4378 | rc = -EIO; |
4379 | goto GetInodeNumOut; | |
4380 | } | |
4381 | pfinfo = (struct file_internal_info *) | |
4382 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4383 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4384 | } |
4385 | } | |
4386 | GetInodeNumOut: | |
4387 | cifs_buf_release(pSMB); | |
4388 | if (rc == -EAGAIN) | |
4389 | goto GetInodeNumberRetry; | |
4390 | return rc; | |
4391 | } | |
1da177e4 LT |
4392 | |
4393 | int | |
6d5786a3 | 4394 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4395 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4396 | unsigned int *num_of_nodes, |
737b758c | 4397 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4398 | { |
4399 | /* TRANS2_GET_DFS_REFERRAL */ | |
4400 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4401 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4402 | int rc = 0; |
4403 | int bytes_returned; | |
4404 | int name_len; | |
1da177e4 | 4405 | __u16 params, byte_count; |
c2cf07d5 SF |
4406 | *num_of_nodes = 0; |
4407 | *target_nodes = NULL; | |
1da177e4 | 4408 | |
f96637be | 4409 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4410 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4411 | return -ENODEV; |
b327a717 | 4412 | |
1da177e4 | 4413 | getDFSRetry: |
b327a717 | 4414 | rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
1da177e4 LT |
4415 | (void **) &pSMBr); |
4416 | if (rc) | |
4417 | return rc; | |
50c2f753 SF |
4418 | |
4419 | /* server pointer checked in called function, | |
1982c344 | 4420 | but should never be null here anyway */ |
88257360 | 4421 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4422 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4423 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4424 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4425 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4426 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4427 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4428 | |
4429 | if (ses->capabilities & CAP_UNICODE) { | |
4430 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4431 | name_len = | |
acbbb76a | 4432 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4433 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4434 | remap); |
1da177e4 LT |
4435 | name_len++; /* trailing null */ |
4436 | name_len *= 2; | |
50c2f753 | 4437 | } else { /* BB improve the check for buffer overruns BB */ |
340625e6 | 4438 | name_len = copy_path_name(pSMB->RequestFileName, search_name); |
1da177e4 LT |
4439 | } |
4440 | ||
65c3b205 | 4441 | if (ses->server->sign) |
38d77c50 | 4442 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4443 | |
50c2f753 | 4444 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4445 | |
1da177e4 LT |
4446 | params = 2 /* level */ + name_len /*includes null */ ; |
4447 | pSMB->TotalDataCount = 0; | |
4448 | pSMB->DataCount = 0; | |
4449 | pSMB->DataOffset = 0; | |
4450 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4451 | /* BB find exact max SMB PDU from sess structure BB */ |
4452 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4453 | pSMB->MaxSetupCount = 0; |
4454 | pSMB->Reserved = 0; | |
4455 | pSMB->Flags = 0; | |
4456 | pSMB->Timeout = 0; | |
4457 | pSMB->Reserved2 = 0; | |
4458 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4459 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4460 | pSMB->SetupCount = 1; |
4461 | pSMB->Reserved3 = 0; | |
4462 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4463 | byte_count = params + 3 /* pad */ ; | |
4464 | pSMB->ParameterCount = cpu_to_le16(params); | |
4465 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4466 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4467 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4468 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4469 | ||
4470 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4471 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4472 | if (rc) { | |
f96637be | 4473 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4474 | goto GetDFSRefExit; |
4475 | } | |
4476 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4477 | |
c2cf07d5 | 4478 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4479 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4480 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4481 | goto GetDFSRefExit; |
4482 | } | |
c2cf07d5 | 4483 | |
f96637be JP |
4484 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4485 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4486 | |
fec4585f | 4487 | /* parse returned result into more usable form */ |
4ecce920 AA |
4488 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4489 | le16_to_cpu(pSMBr->t2.DataCount), | |
4490 | num_of_nodes, target_nodes, nls_codepage, | |
4491 | remap, search_name, | |
284316dd | 4492 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4493 | |
1da177e4 | 4494 | GetDFSRefExit: |
0d817bc0 | 4495 | cifs_buf_release(pSMB); |
1da177e4 LT |
4496 | |
4497 | if (rc == -EAGAIN) | |
4498 | goto getDFSRetry; | |
4499 | ||
4500 | return rc; | |
4501 | } | |
4502 | ||
20962438 SF |
4503 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4504 | int | |
6d5786a3 PS |
4505 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4506 | struct kstatfs *FSData) | |
20962438 SF |
4507 | { |
4508 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4509 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4510 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4511 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4512 | int rc = 0; | |
4513 | int bytes_returned = 0; | |
4514 | __u16 params, byte_count; | |
4515 | ||
f96637be | 4516 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4517 | oldQFSInfoRetry: |
4518 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4519 | (void **) &pSMBr); | |
4520 | if (rc) | |
4521 | return rc; | |
20962438 SF |
4522 | |
4523 | params = 2; /* level */ | |
4524 | pSMB->TotalDataCount = 0; | |
4525 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4526 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4527 | pSMB->MaxSetupCount = 0; | |
4528 | pSMB->Reserved = 0; | |
4529 | pSMB->Flags = 0; | |
4530 | pSMB->Timeout = 0; | |
4531 | pSMB->Reserved2 = 0; | |
4532 | byte_count = params + 1 /* pad */ ; | |
4533 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4534 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4535 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4536 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4537 | pSMB->DataCount = 0; | |
4538 | pSMB->DataOffset = 0; | |
4539 | pSMB->SetupCount = 1; | |
4540 | pSMB->Reserved3 = 0; | |
4541 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4542 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4543 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4544 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4545 | ||
4546 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4547 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4548 | if (rc) { | |
f96637be | 4549 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4550 | } else { /* decode response */ |
4551 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4552 | ||
820a803f | 4553 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4554 | rc = -EIO; /* bad smb */ |
4555 | else { | |
4556 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4557 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4558 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4559 | |
50c2f753 | 4560 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4561 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4562 | FSData->f_bsize = | |
4563 | le16_to_cpu(response_data->BytesPerSector) * | |
4564 | le32_to_cpu(response_data-> | |
4565 | SectorsPerAllocationUnit); | |
5a519bea SF |
4566 | /* |
4567 | * much prefer larger but if server doesn't report | |
4568 | * a valid size than 4K is a reasonable minimum | |
4569 | */ | |
4570 | if (FSData->f_bsize < 512) | |
4571 | FSData->f_bsize = 4096; | |
4572 | ||
20962438 | 4573 | FSData->f_blocks = |
50c2f753 | 4574 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4575 | FSData->f_bfree = FSData->f_bavail = |
4576 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4577 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4578 | (unsigned long long)FSData->f_blocks, | |
4579 | (unsigned long long)FSData->f_bfree, | |
4580 | FSData->f_bsize); | |
20962438 SF |
4581 | } |
4582 | } | |
4583 | cifs_buf_release(pSMB); | |
4584 | ||
4585 | if (rc == -EAGAIN) | |
4586 | goto oldQFSInfoRetry; | |
4587 | ||
4588 | return rc; | |
4589 | } | |
4590 | ||
1da177e4 | 4591 | int |
6d5786a3 PS |
4592 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4593 | struct kstatfs *FSData) | |
1da177e4 LT |
4594 | { |
4595 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4596 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4597 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4598 | FILE_SYSTEM_INFO *response_data; | |
4599 | int rc = 0; | |
4600 | int bytes_returned = 0; | |
4601 | __u16 params, byte_count; | |
4602 | ||
f96637be | 4603 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4604 | QFSInfoRetry: |
4605 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4606 | (void **) &pSMBr); | |
4607 | if (rc) | |
4608 | return rc; | |
4609 | ||
4610 | params = 2; /* level */ | |
4611 | pSMB->TotalDataCount = 0; | |
4612 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4613 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4614 | pSMB->MaxSetupCount = 0; |
4615 | pSMB->Reserved = 0; | |
4616 | pSMB->Flags = 0; | |
4617 | pSMB->Timeout = 0; | |
4618 | pSMB->Reserved2 = 0; | |
4619 | byte_count = params + 1 /* pad */ ; | |
4620 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4621 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4622 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4623 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4624 | pSMB->DataCount = 0; |
4625 | pSMB->DataOffset = 0; | |
4626 | pSMB->SetupCount = 1; | |
4627 | pSMB->Reserved3 = 0; | |
4628 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4629 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4630 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4631 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4632 | ||
4633 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4634 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4635 | if (rc) { | |
f96637be | 4636 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 4637 | } else { /* decode response */ |
50c2f753 | 4638 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4639 | |
820a803f | 4640 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4641 | rc = -EIO; /* bad smb */ |
4642 | else { | |
4643 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4644 | |
4645 | response_data = | |
4646 | (FILE_SYSTEM_INFO | |
4647 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4648 | data_offset); | |
4649 | FSData->f_bsize = | |
4650 | le32_to_cpu(response_data->BytesPerSector) * | |
4651 | le32_to_cpu(response_data-> | |
4652 | SectorsPerAllocationUnit); | |
5a519bea SF |
4653 | /* |
4654 | * much prefer larger but if server doesn't report | |
4655 | * a valid size than 4K is a reasonable minimum | |
4656 | */ | |
4657 | if (FSData->f_bsize < 512) | |
4658 | FSData->f_bsize = 4096; | |
4659 | ||
1da177e4 LT |
4660 | FSData->f_blocks = |
4661 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4662 | FSData->f_bfree = FSData->f_bavail = | |
4663 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4664 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4665 | (unsigned long long)FSData->f_blocks, | |
4666 | (unsigned long long)FSData->f_bfree, | |
4667 | FSData->f_bsize); | |
1da177e4 LT |
4668 | } |
4669 | } | |
4670 | cifs_buf_release(pSMB); | |
4671 | ||
4672 | if (rc == -EAGAIN) | |
4673 | goto QFSInfoRetry; | |
4674 | ||
4675 | return rc; | |
4676 | } | |
4677 | ||
4678 | int | |
6d5786a3 | 4679 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4680 | { |
4681 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4682 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4683 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4684 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4685 | int rc = 0; | |
4686 | int bytes_returned = 0; | |
4687 | __u16 params, byte_count; | |
4688 | ||
f96637be | 4689 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
4690 | QFSAttributeRetry: |
4691 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4692 | (void **) &pSMBr); | |
4693 | if (rc) | |
4694 | return rc; | |
4695 | ||
4696 | params = 2; /* level */ | |
4697 | pSMB->TotalDataCount = 0; | |
4698 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4699 | /* BB find exact max SMB PDU from sess structure BB */ |
4700 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4701 | pSMB->MaxSetupCount = 0; |
4702 | pSMB->Reserved = 0; | |
4703 | pSMB->Flags = 0; | |
4704 | pSMB->Timeout = 0; | |
4705 | pSMB->Reserved2 = 0; | |
4706 | byte_count = params + 1 /* pad */ ; | |
4707 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4708 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4709 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4710 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4711 | pSMB->DataCount = 0; |
4712 | pSMB->DataOffset = 0; | |
4713 | pSMB->SetupCount = 1; | |
4714 | pSMB->Reserved3 = 0; | |
4715 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4716 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4717 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4718 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4719 | ||
4720 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4721 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4722 | if (rc) { | |
f96637be | 4723 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
4724 | } else { /* decode response */ |
4725 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4726 | ||
820a803f | 4727 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4728 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4729 | rc = -EIO; /* bad smb */ |
4730 | } else { | |
4731 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4732 | response_data = | |
4733 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4734 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4735 | data_offset); | |
4736 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4737 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4738 | } |
4739 | } | |
4740 | cifs_buf_release(pSMB); | |
4741 | ||
4742 | if (rc == -EAGAIN) | |
4743 | goto QFSAttributeRetry; | |
4744 | ||
4745 | return rc; | |
4746 | } | |
4747 | ||
4748 | int | |
6d5786a3 | 4749 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4750 | { |
4751 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4752 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4753 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4754 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4755 | int rc = 0; | |
4756 | int bytes_returned = 0; | |
4757 | __u16 params, byte_count; | |
4758 | ||
f96637be | 4759 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
4760 | QFSDeviceRetry: |
4761 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4762 | (void **) &pSMBr); | |
4763 | if (rc) | |
4764 | return rc; | |
4765 | ||
4766 | params = 2; /* level */ | |
4767 | pSMB->TotalDataCount = 0; | |
4768 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4769 | /* BB find exact max SMB PDU from sess structure BB */ |
4770 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4771 | pSMB->MaxSetupCount = 0; |
4772 | pSMB->Reserved = 0; | |
4773 | pSMB->Flags = 0; | |
4774 | pSMB->Timeout = 0; | |
4775 | pSMB->Reserved2 = 0; | |
4776 | byte_count = params + 1 /* pad */ ; | |
4777 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4778 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4779 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4780 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4781 | |
4782 | pSMB->DataCount = 0; | |
4783 | pSMB->DataOffset = 0; | |
4784 | pSMB->SetupCount = 1; | |
4785 | pSMB->Reserved3 = 0; | |
4786 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4787 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4788 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4789 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4790 | ||
4791 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4792 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4793 | if (rc) { | |
f96637be | 4794 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
4795 | } else { /* decode response */ |
4796 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4797 | ||
820a803f JL |
4798 | if (rc || get_bcc(&pSMBr->hdr) < |
4799 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4800 | rc = -EIO; /* bad smb */ |
4801 | else { | |
4802 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4803 | response_data = | |
737b758c SF |
4804 | (FILE_SYSTEM_DEVICE_INFO *) |
4805 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4806 | data_offset); |
4807 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4808 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4809 | } |
4810 | } | |
4811 | cifs_buf_release(pSMB); | |
4812 | ||
4813 | if (rc == -EAGAIN) | |
4814 | goto QFSDeviceRetry; | |
4815 | ||
4816 | return rc; | |
4817 | } | |
4818 | ||
4819 | int | |
6d5786a3 | 4820 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4821 | { |
4822 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4823 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4824 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4825 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4826 | int rc = 0; | |
4827 | int bytes_returned = 0; | |
4828 | __u16 params, byte_count; | |
4829 | ||
f96637be | 4830 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 4831 | QFSUnixRetry: |
f569599a JL |
4832 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4833 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4834 | if (rc) |
4835 | return rc; | |
4836 | ||
4837 | params = 2; /* level */ | |
4838 | pSMB->TotalDataCount = 0; | |
4839 | pSMB->DataCount = 0; | |
4840 | pSMB->DataOffset = 0; | |
4841 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4842 | /* BB find exact max SMB PDU from sess structure BB */ |
4843 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4844 | pSMB->MaxSetupCount = 0; |
4845 | pSMB->Reserved = 0; | |
4846 | pSMB->Flags = 0; | |
4847 | pSMB->Timeout = 0; | |
4848 | pSMB->Reserved2 = 0; | |
4849 | byte_count = params + 1 /* pad */ ; | |
4850 | pSMB->ParameterCount = cpu_to_le16(params); | |
4851 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4852 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4853 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4854 | pSMB->SetupCount = 1; |
4855 | pSMB->Reserved3 = 0; | |
4856 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4857 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4858 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4859 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4860 | ||
4861 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4862 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4863 | if (rc) { | |
f96637be | 4864 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
4865 | } else { /* decode response */ |
4866 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4867 | ||
820a803f | 4868 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4869 | rc = -EIO; /* bad smb */ |
4870 | } else { | |
4871 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4872 | response_data = | |
4873 | (FILE_SYSTEM_UNIX_INFO | |
4874 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4875 | data_offset); | |
4876 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4877 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4878 | } |
4879 | } | |
4880 | cifs_buf_release(pSMB); | |
4881 | ||
4882 | if (rc == -EAGAIN) | |
4883 | goto QFSUnixRetry; | |
4884 | ||
4885 | ||
4886 | return rc; | |
4887 | } | |
4888 | ||
ac67055e | 4889 | int |
6d5786a3 | 4890 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
4891 | { |
4892 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4893 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4894 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4895 | int rc = 0; | |
4896 | int bytes_returned = 0; | |
4897 | __u16 params, param_offset, offset, byte_count; | |
4898 | ||
f96637be | 4899 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 4900 | SETFSUnixRetry: |
f26282c9 | 4901 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4902 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4903 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4904 | if (rc) |
4905 | return rc; | |
4906 | ||
4907 | params = 4; /* 2 bytes zero followed by info level. */ | |
4908 | pSMB->MaxSetupCount = 0; | |
4909 | pSMB->Reserved = 0; | |
4910 | pSMB->Flags = 0; | |
4911 | pSMB->Timeout = 0; | |
4912 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4913 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4914 | - 4; | |
ac67055e JA |
4915 | offset = param_offset + params; |
4916 | ||
4917 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4918 | /* BB find exact max SMB PDU from sess structure BB */ |
4919 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4920 | pSMB->SetupCount = 1; |
4921 | pSMB->Reserved3 = 0; | |
4922 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4923 | byte_count = 1 /* pad */ + params + 12; | |
4924 | ||
4925 | pSMB->DataCount = cpu_to_le16(12); | |
4926 | pSMB->ParameterCount = cpu_to_le16(params); | |
4927 | pSMB->TotalDataCount = pSMB->DataCount; | |
4928 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4929 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4930 | pSMB->DataOffset = cpu_to_le16(offset); | |
4931 | ||
4932 | /* Params. */ | |
4933 | pSMB->FileNum = 0; | |
4934 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4935 | ||
4936 | /* Data. */ | |
4937 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4938 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4939 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4940 | ||
be8e3b00 | 4941 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4942 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4943 | ||
4944 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4945 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4946 | if (rc) { | |
f96637be | 4947 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
4948 | } else { /* decode response */ |
4949 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4950 | if (rc) |
ac67055e | 4951 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4952 | } |
4953 | cifs_buf_release(pSMB); | |
4954 | ||
4955 | if (rc == -EAGAIN) | |
4956 | goto SETFSUnixRetry; | |
4957 | ||
4958 | return rc; | |
4959 | } | |
4960 | ||
4961 | ||
1da177e4 LT |
4962 | |
4963 | int | |
6d5786a3 | 4964 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 4965 | struct kstatfs *FSData) |
1da177e4 LT |
4966 | { |
4967 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4968 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4969 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4970 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4971 | int rc = 0; | |
4972 | int bytes_returned = 0; | |
4973 | __u16 params, byte_count; | |
4974 | ||
f96637be | 4975 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
4976 | QFSPosixRetry: |
4977 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4978 | (void **) &pSMBr); | |
4979 | if (rc) | |
4980 | return rc; | |
4981 | ||
4982 | params = 2; /* level */ | |
4983 | pSMB->TotalDataCount = 0; | |
4984 | pSMB->DataCount = 0; | |
4985 | pSMB->DataOffset = 0; | |
4986 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4987 | /* BB find exact max SMB PDU from sess structure BB */ |
4988 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4989 | pSMB->MaxSetupCount = 0; |
4990 | pSMB->Reserved = 0; | |
4991 | pSMB->Flags = 0; | |
4992 | pSMB->Timeout = 0; | |
4993 | pSMB->Reserved2 = 0; | |
4994 | byte_count = params + 1 /* pad */ ; | |
4995 | pSMB->ParameterCount = cpu_to_le16(params); | |
4996 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4997 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4998 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4999 | pSMB->SetupCount = 1; |
5000 | pSMB->Reserved3 = 0; | |
5001 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5002 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5003 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5004 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5005 | ||
5006 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5007 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5008 | if (rc) { | |
f96637be | 5009 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
5010 | } else { /* decode response */ |
5011 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5012 | ||
820a803f | 5013 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5014 | rc = -EIO; /* bad smb */ |
5015 | } else { | |
5016 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5017 | response_data = | |
5018 | (FILE_SYSTEM_POSIX_INFO | |
5019 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5020 | data_offset); | |
5021 | FSData->f_bsize = | |
5022 | le32_to_cpu(response_data->BlockSize); | |
5a519bea SF |
5023 | /* |
5024 | * much prefer larger but if server doesn't report | |
5025 | * a valid size than 4K is a reasonable minimum | |
5026 | */ | |
5027 | if (FSData->f_bsize < 512) | |
5028 | FSData->f_bsize = 4096; | |
5029 | ||
1da177e4 LT |
5030 | FSData->f_blocks = |
5031 | le64_to_cpu(response_data->TotalBlocks); | |
5032 | FSData->f_bfree = | |
5033 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5034 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5035 | FSData->f_bavail = FSData->f_bfree; |
5036 | } else { | |
5037 | FSData->f_bavail = | |
50c2f753 | 5038 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5039 | } |
790fe579 | 5040 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5041 | FSData->f_files = |
50c2f753 | 5042 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5043 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5044 | FSData->f_ffree = |
50c2f753 | 5045 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5046 | } |
5047 | } | |
5048 | cifs_buf_release(pSMB); | |
5049 | ||
5050 | if (rc == -EAGAIN) | |
5051 | goto QFSPosixRetry; | |
5052 | ||
5053 | return rc; | |
5054 | } | |
5055 | ||
5056 | ||
d1433418 PS |
5057 | /* |
5058 | * We can not use write of zero bytes trick to set file size due to need for | |
5059 | * large file support. Also note that this SetPathInfo is preferred to | |
5060 | * SetFileInfo based method in next routine which is only needed to work around | |
5061 | * a sharing violation bugin Samba which this routine can run into. | |
5062 | */ | |
1da177e4 | 5063 | int |
6d5786a3 | 5064 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5065 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5066 | bool set_allocation) | |
1da177e4 LT |
5067 | { |
5068 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5069 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5070 | struct file_end_of_file_info *parm_data; | |
5071 | int name_len; | |
5072 | int rc = 0; | |
5073 | int bytes_returned = 0; | |
2baa2682 | 5074 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5075 | |
1da177e4 LT |
5076 | __u16 params, byte_count, data_count, param_offset, offset; |
5077 | ||
f96637be | 5078 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5079 | SetEOFRetry: |
5080 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5081 | (void **) &pSMBr); | |
5082 | if (rc) | |
5083 | return rc; | |
5084 | ||
5085 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5086 | name_len = | |
d1433418 PS |
5087 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5088 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5089 | name_len++; /* trailing null */ |
5090 | name_len *= 2; | |
340625e6 RS |
5091 | } else { |
5092 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5093 | } |
5094 | params = 6 + name_len; | |
26f57364 | 5095 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5096 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5097 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5098 | pSMB->MaxSetupCount = 0; |
5099 | pSMB->Reserved = 0; | |
5100 | pSMB->Flags = 0; | |
5101 | pSMB->Timeout = 0; | |
5102 | pSMB->Reserved2 = 0; | |
5103 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5104 | InformationLevel) - 4; |
1da177e4 | 5105 | offset = param_offset + params; |
d1433418 | 5106 | if (set_allocation) { |
50c2f753 SF |
5107 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5108 | pSMB->InformationLevel = | |
5109 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5110 | else | |
5111 | pSMB->InformationLevel = | |
5112 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5113 | } else /* Set File Size */ { | |
1da177e4 LT |
5114 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5115 | pSMB->InformationLevel = | |
50c2f753 | 5116 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5117 | else |
5118 | pSMB->InformationLevel = | |
50c2f753 | 5119 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5120 | } |
5121 | ||
5122 | parm_data = | |
5123 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5124 | offset); | |
5125 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5126 | pSMB->DataOffset = cpu_to_le16(offset); | |
5127 | pSMB->SetupCount = 1; | |
5128 | pSMB->Reserved3 = 0; | |
5129 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5130 | byte_count = 3 /* pad */ + params + data_count; | |
5131 | pSMB->DataCount = cpu_to_le16(data_count); | |
5132 | pSMB->TotalDataCount = pSMB->DataCount; | |
5133 | pSMB->ParameterCount = cpu_to_le16(params); | |
5134 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5135 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5136 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5137 | parm_data->FileSize = cpu_to_le64(size); |
5138 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5139 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5140 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5141 | if (rc) |
f96637be | 5142 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5143 | |
5144 | cifs_buf_release(pSMB); | |
5145 | ||
5146 | if (rc == -EAGAIN) | |
5147 | goto SetEOFRetry; | |
5148 | ||
5149 | return rc; | |
5150 | } | |
5151 | ||
5152 | int | |
d1433418 PS |
5153 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5154 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5155 | { |
5156 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5157 | struct file_end_of_file_info *parm_data; |
5158 | int rc = 0; | |
1da177e4 LT |
5159 | __u16 params, param_offset, offset, byte_count, count; |
5160 | ||
f96637be JP |
5161 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5162 | (long long)size); | |
cd63499c SF |
5163 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5164 | ||
1da177e4 LT |
5165 | if (rc) |
5166 | return rc; | |
5167 | ||
d1433418 PS |
5168 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5169 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5170 | |
1da177e4 LT |
5171 | params = 6; |
5172 | pSMB->MaxSetupCount = 0; | |
5173 | pSMB->Reserved = 0; | |
5174 | pSMB->Flags = 0; | |
5175 | pSMB->Timeout = 0; | |
5176 | pSMB->Reserved2 = 0; | |
5177 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5178 | offset = param_offset + params; | |
5179 | ||
1da177e4 LT |
5180 | count = sizeof(struct file_end_of_file_info); |
5181 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5182 | /* BB find exact max SMB PDU from sess structure BB */ |
5183 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5184 | pSMB->SetupCount = 1; |
5185 | pSMB->Reserved3 = 0; | |
5186 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5187 | byte_count = 3 /* pad */ + params + count; | |
5188 | pSMB->DataCount = cpu_to_le16(count); | |
5189 | pSMB->ParameterCount = cpu_to_le16(params); | |
5190 | pSMB->TotalDataCount = pSMB->DataCount; | |
5191 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5192 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
e3973ea3 | 5193 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
1da177e4 | 5194 | parm_data = |
e3973ea3 | 5195 | (struct file_end_of_file_info *)(((char *)pSMB) + offset + 4); |
1da177e4 LT |
5196 | pSMB->DataOffset = cpu_to_le16(offset); |
5197 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5198 | pSMB->Fid = cfile->fid.netfid; |
5199 | if (set_allocation) { | |
1da177e4 LT |
5200 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5201 | pSMB->InformationLevel = | |
5202 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5203 | else | |
5204 | pSMB->InformationLevel = | |
5205 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5206 | } else /* Set File Size */ { |
1da177e4 LT |
5207 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5208 | pSMB->InformationLevel = | |
50c2f753 | 5209 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5210 | else |
5211 | pSMB->InformationLevel = | |
50c2f753 | 5212 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5213 | } |
5214 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5215 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5216 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5217 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5218 | cifs_small_buf_release(pSMB); |
1da177e4 | 5219 | if (rc) { |
f96637be JP |
5220 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5221 | rc); | |
1da177e4 LT |
5222 | } |
5223 | ||
50c2f753 | 5224 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5225 | since file handle passed in no longer valid */ |
5226 | ||
5227 | return rc; | |
5228 | } | |
5229 | ||
50c2f753 | 5230 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5231 | an open handle, rather than by pathname - this is awkward due to |
5232 | potential access conflicts on the open, but it is unavoidable for these | |
5233 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5234 | time and resort to the original setpathinfo level which takes the ancient | |
5235 | DOS time format with 2 second granularity */ | |
5236 | int | |
6d5786a3 | 5237 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5238 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5239 | { |
5240 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5241 | char *data_offset; |
5242 | int rc = 0; | |
1da177e4 LT |
5243 | __u16 params, param_offset, offset, byte_count, count; |
5244 | ||
f96637be | 5245 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5246 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5247 | ||
1da177e4 LT |
5248 | if (rc) |
5249 | return rc; | |
5250 | ||
2dd2dfa0 JL |
5251 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5252 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5253 | |
1da177e4 LT |
5254 | params = 6; |
5255 | pSMB->MaxSetupCount = 0; | |
5256 | pSMB->Reserved = 0; | |
5257 | pSMB->Flags = 0; | |
5258 | pSMB->Timeout = 0; | |
5259 | pSMB->Reserved2 = 0; | |
5260 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5261 | offset = param_offset + params; | |
5262 | ||
b2a3ad9c JL |
5263 | data_offset = (char *)pSMB + |
5264 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5265 | |
26f57364 | 5266 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5267 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5268 | /* BB find max SMB PDU from sess */ |
5269 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5270 | pSMB->SetupCount = 1; |
5271 | pSMB->Reserved3 = 0; | |
5272 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5273 | byte_count = 3 /* pad */ + params + count; | |
5274 | pSMB->DataCount = cpu_to_le16(count); | |
5275 | pSMB->ParameterCount = cpu_to_le16(params); | |
5276 | pSMB->TotalDataCount = pSMB->DataCount; | |
5277 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5278 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5279 | pSMB->DataOffset = cpu_to_le16(offset); | |
5280 | pSMB->Fid = fid; | |
5281 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5282 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5283 | else | |
5284 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5285 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5286 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5287 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5288 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5289 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5290 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5291 | if (rc) |
f96637be JP |
5292 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5293 | rc); | |
1da177e4 | 5294 | |
50c2f753 | 5295 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5296 | since file handle passed in no longer valid */ |
5297 | ||
5298 | return rc; | |
5299 | } | |
5300 | ||
6d22f098 | 5301 | int |
6d5786a3 | 5302 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5303 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5304 | { | |
5305 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5306 | char *data_offset; | |
5307 | int rc = 0; | |
5308 | __u16 params, param_offset, offset, byte_count, count; | |
5309 | ||
f96637be | 5310 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5311 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5312 | ||
5313 | if (rc) | |
5314 | return rc; | |
5315 | ||
5316 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5317 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5318 | ||
5319 | params = 6; | |
5320 | pSMB->MaxSetupCount = 0; | |
5321 | pSMB->Reserved = 0; | |
5322 | pSMB->Flags = 0; | |
5323 | pSMB->Timeout = 0; | |
5324 | pSMB->Reserved2 = 0; | |
5325 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5326 | offset = param_offset + params; | |
5327 | ||
2a780e8b SF |
5328 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5329 | data_offset = (char *)(pSMB) + offset + 4; | |
6d22f098 JL |
5330 | |
5331 | count = 1; | |
5332 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5333 | /* BB find max SMB PDU from sess */ | |
5334 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5335 | pSMB->SetupCount = 1; | |
5336 | pSMB->Reserved3 = 0; | |
5337 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5338 | byte_count = 3 /* pad */ + params + count; | |
5339 | pSMB->DataCount = cpu_to_le16(count); | |
5340 | pSMB->ParameterCount = cpu_to_le16(params); | |
5341 | pSMB->TotalDataCount = pSMB->DataCount; | |
5342 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5343 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5344 | pSMB->DataOffset = cpu_to_le16(offset); | |
5345 | pSMB->Fid = fid; | |
5346 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5347 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5348 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5349 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5350 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5351 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5352 | cifs_small_buf_release(pSMB); |
6d22f098 | 5353 | if (rc) |
f96637be | 5354 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5355 | |
5356 | return rc; | |
5357 | } | |
1da177e4 | 5358 | |
8e408fc9 RS |
5359 | static int |
5360 | CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon, | |
5361 | const char *fileName, const FILE_BASIC_INFO *data, | |
5362 | const struct nls_table *nls_codepage, | |
5363 | struct cifs_sb_info *cifs_sb) | |
5364 | { | |
5365 | int oplock = 0; | |
5366 | struct cifs_open_parms oparms; | |
5367 | struct cifs_fid fid; | |
5368 | int rc; | |
5369 | ||
de036dca VL |
5370 | oparms = (struct cifs_open_parms) { |
5371 | .tcon = tcon, | |
5372 | .cifs_sb = cifs_sb, | |
5373 | .desired_access = GENERIC_WRITE, | |
5374 | .create_options = cifs_create_options(cifs_sb, 0), | |
5375 | .disposition = FILE_OPEN, | |
5376 | .path = fileName, | |
5377 | .fid = &fid, | |
5378 | }; | |
8e408fc9 RS |
5379 | |
5380 | rc = CIFS_open(xid, &oparms, &oplock, NULL); | |
5381 | if (rc) | |
5382 | goto out; | |
5383 | ||
5384 | rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid); | |
5385 | CIFSSMBClose(xid, tcon, fid.netfid); | |
5386 | out: | |
5387 | ||
5388 | return rc; | |
5389 | } | |
5390 | ||
1da177e4 | 5391 | int |
6d5786a3 | 5392 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 | 5393 | const char *fileName, const FILE_BASIC_INFO *data, |
8e408fc9 RS |
5394 | const struct nls_table *nls_codepage, |
5395 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
5396 | { |
5397 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5398 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5399 | int name_len; | |
5400 | int rc = 0; | |
5401 | int bytes_returned = 0; | |
5402 | char *data_offset; | |
5403 | __u16 params, param_offset, offset, byte_count, count; | |
8e408fc9 | 5404 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5405 | |
f96637be | 5406 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5407 | |
5408 | SetTimesRetry: | |
5409 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5410 | (void **) &pSMBr); | |
5411 | if (rc) | |
5412 | return rc; | |
5413 | ||
5414 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5415 | name_len = | |
acbbb76a SF |
5416 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5417 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5418 | name_len++; /* trailing null */ |
5419 | name_len *= 2; | |
340625e6 RS |
5420 | } else { |
5421 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5422 | } |
5423 | ||
5424 | params = 6 + name_len; | |
26f57364 | 5425 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5426 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5427 | /* BB find max SMB PDU from sess structure BB */ |
5428 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5429 | pSMB->MaxSetupCount = 0; |
5430 | pSMB->Reserved = 0; | |
5431 | pSMB->Flags = 0; | |
5432 | pSMB->Timeout = 0; | |
5433 | pSMB->Reserved2 = 0; | |
5434 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5435 | InformationLevel) - 4; |
1da177e4 LT |
5436 | offset = param_offset + params; |
5437 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5438 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5439 | pSMB->DataOffset = cpu_to_le16(offset); | |
5440 | pSMB->SetupCount = 1; | |
5441 | pSMB->Reserved3 = 0; | |
5442 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5443 | byte_count = 3 /* pad */ + params + count; | |
5444 | ||
5445 | pSMB->DataCount = cpu_to_le16(count); | |
5446 | pSMB->ParameterCount = cpu_to_le16(params); | |
5447 | pSMB->TotalDataCount = pSMB->DataCount; | |
5448 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5449 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5450 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5451 | else | |
5452 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5453 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5454 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5455 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5456 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5457 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5458 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5459 | if (rc) |
f96637be | 5460 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5461 | |
5462 | cifs_buf_release(pSMB); | |
5463 | ||
5464 | if (rc == -EAGAIN) | |
5465 | goto SetTimesRetry; | |
5466 | ||
8e408fc9 RS |
5467 | if (rc == -EOPNOTSUPP) |
5468 | return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data, | |
5469 | nls_codepage, cifs_sb); | |
5470 | ||
1da177e4 LT |
5471 | return rc; |
5472 | } | |
5473 | ||
654cf14a JL |
5474 | static void |
5475 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5476 | const struct cifs_unix_set_info_args *args) | |
5477 | { | |
49418b2c | 5478 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5479 | u64 mode = args->mode; |
5480 | ||
49418b2c EB |
5481 | if (uid_valid(args->uid)) |
5482 | uid = from_kuid(&init_user_ns, args->uid); | |
5483 | if (gid_valid(args->gid)) | |
5484 | gid = from_kgid(&init_user_ns, args->gid); | |
5485 | ||
654cf14a JL |
5486 | /* |
5487 | * Samba server ignores set of file size to zero due to bugs in some | |
5488 | * older clients, but we should be precise - we use SetFileSize to | |
5489 | * set file size and do not want to truncate file size to zero | |
25985edc | 5490 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5491 | * zero instead of -1 here |
5492 | */ | |
5493 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5494 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5495 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5496 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5497 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5498 | data_offset->Uid = cpu_to_le64(uid); |
5499 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5500 | /* better to leave device as zero when it is */ |
5501 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5502 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5503 | data_offset->Permissions = cpu_to_le64(mode); | |
5504 | ||
5505 | if (S_ISREG(mode)) | |
5506 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5507 | else if (S_ISDIR(mode)) | |
5508 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5509 | else if (S_ISLNK(mode)) | |
5510 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5511 | else if (S_ISCHR(mode)) | |
5512 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5513 | else if (S_ISBLK(mode)) | |
5514 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5515 | else if (S_ISFIFO(mode)) | |
5516 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5517 | else if (S_ISSOCK(mode)) | |
5518 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5519 | } | |
5520 | ||
3bbeeb3c | 5521 | int |
6d5786a3 | 5522 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5523 | const struct cifs_unix_set_info_args *args, |
5524 | u16 fid, u32 pid_of_opener) | |
5525 | { | |
5526 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5527 | char *data_offset; |
3bbeeb3c JL |
5528 | int rc = 0; |
5529 | u16 params, param_offset, offset, byte_count, count; | |
5530 | ||
f96637be | 5531 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5532 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5533 | ||
5534 | if (rc) | |
5535 | return rc; | |
5536 | ||
5537 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5538 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5539 | ||
5540 | params = 6; | |
5541 | pSMB->MaxSetupCount = 0; | |
5542 | pSMB->Reserved = 0; | |
5543 | pSMB->Flags = 0; | |
5544 | pSMB->Timeout = 0; | |
5545 | pSMB->Reserved2 = 0; | |
5546 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5547 | offset = param_offset + params; | |
5548 | ||
b2a3ad9c JL |
5549 | data_offset = (char *)pSMB + |
5550 | offsetof(struct smb_hdr, Protocol) + offset; | |
5551 | ||
3bbeeb3c JL |
5552 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5553 | ||
5554 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5555 | /* BB find max SMB PDU from sess */ | |
5556 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5557 | pSMB->SetupCount = 1; | |
5558 | pSMB->Reserved3 = 0; | |
5559 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5560 | byte_count = 3 /* pad */ + params + count; | |
5561 | pSMB->DataCount = cpu_to_le16(count); | |
5562 | pSMB->ParameterCount = cpu_to_le16(params); | |
5563 | pSMB->TotalDataCount = pSMB->DataCount; | |
5564 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5565 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5566 | pSMB->DataOffset = cpu_to_le16(offset); | |
5567 | pSMB->Fid = fid; | |
5568 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5569 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5570 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5571 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5572 | ||
b2a3ad9c | 5573 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5574 | |
792af7b0 | 5575 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5576 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 5577 | if (rc) |
f96637be JP |
5578 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5579 | rc); | |
3bbeeb3c JL |
5580 | |
5581 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5582 | since file handle passed in no longer valid */ | |
5583 | ||
5584 | return rc; | |
5585 | } | |
5586 | ||
1da177e4 | 5587 | int |
6d5786a3 | 5588 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5589 | const char *file_name, |
01ea95e3 JL |
5590 | const struct cifs_unix_set_info_args *args, |
5591 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5592 | { |
5593 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5594 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5595 | int name_len; | |
5596 | int rc = 0; | |
5597 | int bytes_returned = 0; | |
5598 | FILE_UNIX_BASIC_INFO *data_offset; | |
5599 | __u16 params, param_offset, offset, count, byte_count; | |
5600 | ||
f96637be | 5601 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5602 | setPermsRetry: |
5603 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5604 | (void **) &pSMBr); | |
5605 | if (rc) | |
5606 | return rc; | |
5607 | ||
5608 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5609 | name_len = | |
ff691e96 | 5610 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5611 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5612 | name_len++; /* trailing null */ |
5613 | name_len *= 2; | |
340625e6 RS |
5614 | } else { |
5615 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5616 | } |
5617 | ||
5618 | params = 6 + name_len; | |
26f57364 | 5619 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5620 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5621 | /* BB find max SMB PDU from sess structure BB */ |
5622 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5623 | pSMB->MaxSetupCount = 0; |
5624 | pSMB->Reserved = 0; | |
5625 | pSMB->Flags = 0; | |
5626 | pSMB->Timeout = 0; | |
5627 | pSMB->Reserved2 = 0; | |
5628 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5629 | InformationLevel) - 4; |
1da177e4 | 5630 | offset = param_offset + params; |
b019e118 SF |
5631 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5632 | data_offset = (FILE_UNIX_BASIC_INFO *)((char *) pSMB + offset + 4); | |
1da177e4 LT |
5633 | memset(data_offset, 0, count); |
5634 | pSMB->DataOffset = cpu_to_le16(offset); | |
5635 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5636 | pSMB->SetupCount = 1; | |
5637 | pSMB->Reserved3 = 0; | |
5638 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5639 | byte_count = 3 /* pad */ + params + count; | |
5640 | pSMB->ParameterCount = cpu_to_le16(params); | |
5641 | pSMB->DataCount = cpu_to_le16(count); | |
5642 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5643 | pSMB->TotalDataCount = pSMB->DataCount; | |
5644 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5645 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5646 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5647 | |
654cf14a | 5648 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5649 | |
5650 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5651 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5652 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5653 | if (rc) |
f96637be | 5654 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 5655 | |
0d817bc0 | 5656 | cifs_buf_release(pSMB); |
1da177e4 LT |
5657 | if (rc == -EAGAIN) |
5658 | goto setPermsRetry; | |
5659 | return rc; | |
5660 | } | |
5661 | ||
1da177e4 | 5662 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5663 | /* |
5664 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5665 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5666 | * it looks for that attribute name and stuffs that value into the EAData | |
5667 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5668 | * buffer. In both cases, the return value is either the length of the | |
5669 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5670 | * the data isn't copied to it, but the length is returned. | |
5671 | */ | |
1da177e4 | 5672 | ssize_t |
6d5786a3 | 5673 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
5674 | const unsigned char *searchName, const unsigned char *ea_name, |
5675 | char *EAData, size_t buf_size, | |
67b4c889 | 5676 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5677 | { |
5678 | /* BB assumes one setup word */ | |
5679 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5680 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
5681 | int remap = cifs_remap(cifs_sb); |
5682 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
5683 | int rc = 0; |
5684 | int bytes_returned; | |
6e462b9f | 5685 | int list_len; |
f0d3868b | 5686 | struct fealist *ea_response_data; |
50c2f753 SF |
5687 | struct fea *temp_fea; |
5688 | char *temp_ptr; | |
0cd126b5 | 5689 | char *end_of_smb; |
f0d3868b | 5690 | __u16 params, byte_count, data_offset; |
5980fc96 | 5691 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 5692 | |
f96637be | 5693 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
5694 | QAllEAsRetry: |
5695 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5696 | (void **) &pSMBr); | |
5697 | if (rc) | |
5698 | return rc; | |
5699 | ||
5700 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5701 | list_len = |
acbbb76a SF |
5702 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
5703 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
5704 | list_len++; /* trailing null */ |
5705 | list_len *= 2; | |
340625e6 RS |
5706 | } else { |
5707 | list_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
5708 | } |
5709 | ||
6e462b9f | 5710 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5711 | pSMB->TotalDataCount = 0; |
5712 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5713 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5714 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5715 | pSMB->MaxSetupCount = 0; |
5716 | pSMB->Reserved = 0; | |
5717 | pSMB->Flags = 0; | |
5718 | pSMB->Timeout = 0; | |
5719 | pSMB->Reserved2 = 0; | |
5720 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5721 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5722 | pSMB->DataCount = 0; |
5723 | pSMB->DataOffset = 0; | |
5724 | pSMB->SetupCount = 1; | |
5725 | pSMB->Reserved3 = 0; | |
5726 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5727 | byte_count = params + 1 /* pad */ ; | |
5728 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5729 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5730 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5731 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5732 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5733 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5734 | ||
5735 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5736 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5737 | if (rc) { | |
f96637be | 5738 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
5739 | goto QAllEAsOut; |
5740 | } | |
1da177e4 | 5741 | |
f0d3868b JL |
5742 | |
5743 | /* BB also check enough total bytes returned */ | |
5744 | /* BB we need to improve the validity checking | |
5745 | of these trans2 responses */ | |
5746 | ||
5747 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5748 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5749 | rc = -EIO; /* bad smb */ |
5750 | goto QAllEAsOut; | |
5751 | } | |
5752 | ||
5753 | /* check that length of list is not more than bcc */ | |
5754 | /* check that each entry does not go beyond length | |
5755 | of list */ | |
5756 | /* check that each element of each entry does not | |
5757 | go beyond end of list */ | |
5758 | /* validate_trans2_offsets() */ | |
5759 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5760 | ||
5761 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5762 | ea_response_data = (struct fealist *) | |
5763 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5764 | ||
6e462b9f | 5765 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 5766 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 5767 | if (list_len <= 8) { |
f96637be | 5768 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
5769 | /* didn't find the named attribute */ |
5770 | if (ea_name) | |
5771 | rc = -ENODATA; | |
f0d3868b JL |
5772 | goto QAllEAsOut; |
5773 | } | |
5774 | ||
0cd126b5 | 5775 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5776 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5777 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 5778 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
5779 | rc = -EIO; |
5780 | goto QAllEAsOut; | |
5781 | } | |
5782 | ||
f0d3868b | 5783 | /* account for ea list len */ |
6e462b9f | 5784 | list_len -= 4; |
398d5843 | 5785 | temp_fea = &ea_response_data->list; |
f0d3868b | 5786 | temp_ptr = (char *)temp_fea; |
6e462b9f | 5787 | while (list_len > 0) { |
122ca007 | 5788 | unsigned int name_len; |
f0d3868b | 5789 | __u16 value_len; |
0cd126b5 | 5790 | |
6e462b9f | 5791 | list_len -= 4; |
f0d3868b | 5792 | temp_ptr += 4; |
0cd126b5 JL |
5793 | /* make sure we can read name_len and value_len */ |
5794 | if (list_len < 0) { | |
f96637be | 5795 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5796 | rc = -EIO; |
5797 | goto QAllEAsOut; | |
5798 | } | |
5799 | ||
5800 | name_len = temp_fea->name_len; | |
5801 | value_len = le16_to_cpu(temp_fea->value_len); | |
5802 | list_len -= name_len + 1 + value_len; | |
5803 | if (list_len < 0) { | |
f96637be | 5804 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5805 | rc = -EIO; |
5806 | goto QAllEAsOut; | |
5807 | } | |
5808 | ||
31c0519f | 5809 | if (ea_name) { |
91d065c4 | 5810 | if (ea_name_len == name_len && |
ac423446 | 5811 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
5812 | temp_ptr += name_len + 1; |
5813 | rc = value_len; | |
5814 | if (buf_size == 0) | |
5815 | goto QAllEAsOut; | |
5816 | if ((size_t)value_len > buf_size) { | |
5817 | rc = -ERANGE; | |
5818 | goto QAllEAsOut; | |
5819 | } | |
5820 | memcpy(EAData, temp_ptr, value_len); | |
5821 | goto QAllEAsOut; | |
5822 | } | |
f0d3868b | 5823 | } else { |
31c0519f JL |
5824 | /* account for prefix user. and trailing null */ |
5825 | rc += (5 + 1 + name_len); | |
5826 | if (rc < (int) buf_size) { | |
5827 | memcpy(EAData, "user.", 5); | |
5828 | EAData += 5; | |
5829 | memcpy(EAData, temp_ptr, name_len); | |
5830 | EAData += name_len; | |
5831 | /* null terminate name */ | |
5832 | *EAData = 0; | |
5833 | ++EAData; | |
5834 | } else if (buf_size == 0) { | |
5835 | /* skip copy - calc size only */ | |
5836 | } else { | |
5837 | /* stop before overrun buffer */ | |
5838 | rc = -ERANGE; | |
5839 | break; | |
5840 | } | |
1da177e4 | 5841 | } |
0cd126b5 | 5842 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5843 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5844 | } |
f0d3868b | 5845 | |
31c0519f JL |
5846 | /* didn't find the named attribute */ |
5847 | if (ea_name) | |
5848 | rc = -ENODATA; | |
5849 | ||
f0d3868b | 5850 | QAllEAsOut: |
0d817bc0 | 5851 | cifs_buf_release(pSMB); |
1da177e4 LT |
5852 | if (rc == -EAGAIN) |
5853 | goto QAllEAsRetry; | |
5854 | ||
5855 | return (ssize_t)rc; | |
5856 | } | |
5857 | ||
1da177e4 | 5858 | int |
6d5786a3 PS |
5859 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
5860 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 5861 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 5862 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5863 | { |
5864 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5865 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5866 | struct fealist *parm_data; | |
5867 | int name_len; | |
5868 | int rc = 0; | |
5869 | int bytes_returned = 0; | |
5870 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 5871 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5872 | |
f96637be | 5873 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
5874 | SetEARetry: |
5875 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5876 | (void **) &pSMBr); | |
5877 | if (rc) | |
5878 | return rc; | |
5879 | ||
5880 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5881 | name_len = | |
acbbb76a SF |
5882 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5883 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5884 | name_len++; /* trailing null */ |
5885 | name_len *= 2; | |
340625e6 RS |
5886 | } else { |
5887 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5888 | } |
5889 | ||
5890 | params = 6 + name_len; | |
5891 | ||
5892 | /* done calculating parms using name_len of file name, | |
5893 | now use name_len to calculate length of ea name | |
5894 | we are going to create in the inode xattrs */ | |
790fe579 | 5895 | if (ea_name == NULL) |
1da177e4 LT |
5896 | name_len = 0; |
5897 | else | |
50c2f753 | 5898 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5899 | |
398d5843 | 5900 | count = sizeof(*parm_data) + 1 + ea_value_len + name_len; |
1da177e4 | 5901 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5902 | /* BB find max SMB PDU from sess */ |
5903 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5904 | pSMB->MaxSetupCount = 0; |
5905 | pSMB->Reserved = 0; | |
5906 | pSMB->Flags = 0; | |
5907 | pSMB->Timeout = 0; | |
5908 | pSMB->Reserved2 = 0; | |
5909 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5910 | InformationLevel) - 4; |
1da177e4 LT |
5911 | offset = param_offset + params; |
5912 | pSMB->InformationLevel = | |
5913 | cpu_to_le16(SMB_SET_FILE_EA); | |
5914 | ||
ade7db99 | 5915 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
5916 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
5917 | pSMB->DataOffset = cpu_to_le16(offset); | |
5918 | pSMB->SetupCount = 1; | |
5919 | pSMB->Reserved3 = 0; | |
5920 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5921 | byte_count = 3 /* pad */ + params + count; | |
5922 | pSMB->DataCount = cpu_to_le16(count); | |
5923 | parm_data->list_len = cpu_to_le32(count); | |
398d5843 | 5924 | parm_data->list.EA_flags = 0; |
1da177e4 | 5925 | /* we checked above that name len is less than 255 */ |
398d5843 | 5926 | parm_data->list.name_len = (__u8)name_len; |
1da177e4 | 5927 | /* EA names are always ASCII */ |
790fe579 | 5928 | if (ea_name) |
398d5843 KC |
5929 | strncpy(parm_data->list.name, ea_name, name_len); |
5930 | parm_data->list.name[name_len] = '\0'; | |
5931 | parm_data->list.value_len = cpu_to_le16(ea_value_len); | |
1da177e4 LT |
5932 | /* caller ensures that ea_value_len is less than 64K but |
5933 | we need to ensure that it fits within the smb */ | |
5934 | ||
50c2f753 SF |
5935 | /*BB add length check to see if it would fit in |
5936 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5937 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5938 | if (ea_value_len) | |
398d5843 | 5939 | memcpy(parm_data->list.name + name_len + 1, |
50c2f753 | 5940 | ea_value, ea_value_len); |
1da177e4 LT |
5941 | |
5942 | pSMB->TotalDataCount = pSMB->DataCount; | |
5943 | pSMB->ParameterCount = cpu_to_le16(params); | |
5944 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5945 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5946 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5947 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5948 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5949 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5950 | if (rc) |
f96637be | 5951 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
5952 | |
5953 | cifs_buf_release(pSMB); | |
5954 | ||
5955 | if (rc == -EAGAIN) | |
5956 | goto SetEARetry; | |
5957 | ||
5958 | return rc; | |
5959 | } | |
1da177e4 | 5960 | #endif |