Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
2dd29d31 | 4 | * Copyright (C) International Business Machines Corp., 2002,2007 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
33 | #include <linux/posix_acl_xattr.h> | |
34 | #include <asm/uaccess.h> | |
35 | #include "cifspdu.h" | |
36 | #include "cifsglob.h" | |
d0d66c44 | 37 | #include "cifsacl.h" |
1da177e4 LT |
38 | #include "cifsproto.h" |
39 | #include "cifs_unicode.h" | |
40 | #include "cifs_debug.h" | |
41 | ||
42 | #ifdef CONFIG_CIFS_POSIX | |
43 | static struct { | |
44 | int index; | |
45 | char *name; | |
46 | } protocols[] = { | |
3979877e SF |
47 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
48 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 49 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 50 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 51 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 52 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
53 | {BAD_PROT, "\2"} |
54 | }; | |
55 | #else | |
56 | static struct { | |
57 | int index; | |
58 | char *name; | |
59 | } protocols[] = { | |
3979877e SF |
60 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
61 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 62 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 63 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 64 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
65 | {BAD_PROT, "\2"} |
66 | }; | |
67 | #endif | |
68 | ||
3979877e SF |
69 | /* define the number of elements in the cifs dialect array */ |
70 | #ifdef CONFIG_CIFS_POSIX | |
71 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 72 | #define CIFS_NUM_PROT 4 |
3979877e SF |
73 | #else |
74 | #define CIFS_NUM_PROT 2 | |
75 | #endif /* CIFS_WEAK_PW_HASH */ | |
76 | #else /* not posix */ | |
77 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 78 | #define CIFS_NUM_PROT 3 |
3979877e SF |
79 | #else |
80 | #define CIFS_NUM_PROT 1 | |
81 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
82 | #endif /* CIFS_POSIX */ | |
83 | ||
1da177e4 LT |
84 | |
85 | /* Mark as invalid, all open files on tree connections since they | |
86 | were closed when session to server was lost */ | |
790fe579 | 87 | static void mark_open_files_invalid(struct cifsTconInfo *pTcon) |
1da177e4 LT |
88 | { |
89 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
90 | struct list_head *tmp; |
91 | struct list_head *tmp1; | |
1da177e4 LT |
92 | |
93 | /* list all files open on tree connection and mark them invalid */ | |
94 | write_lock(&GlobalSMBSeslock); | |
95 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { | |
790fe579 | 96 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
26f57364 | 97 | if (open_file) |
1da177e4 | 98 | open_file->invalidHandle = TRUE; |
1da177e4 LT |
99 | } |
100 | write_unlock(&GlobalSMBSeslock); | |
09d1db5c SF |
101 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
102 | to this tcon */ | |
1da177e4 LT |
103 | } |
104 | ||
105 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
106 | static int | |
107 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
108 | void **request_buf /* returned */) | |
109 | { | |
110 | int rc = 0; | |
111 | ||
112 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
113 | check for tcp and smb session status done differently | |
114 | for those three - in the calling routine */ | |
790fe579 SF |
115 | if (tcon) { |
116 | if (tcon->tidStatus == CifsExiting) { | |
6ab16d24 SF |
117 | /* only tree disconnect, open, and write, |
118 | (and ulogoff which does not have tcon) | |
119 | are allowed as we start force umount */ | |
790fe579 | 120 | if ((smb_command != SMB_COM_WRITE_ANDX) && |
50c2f753 | 121 | (smb_command != SMB_COM_OPEN_ANDX) && |
6ab16d24 | 122 | (smb_command != SMB_COM_TREE_DISCONNECT)) { |
790fe579 | 123 | cFYI(1, ("can not send cmd %d while umounting", |
6ab16d24 SF |
124 | smb_command)); |
125 | return -ENODEV; | |
126 | } | |
127 | } | |
790fe579 | 128 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && |
50c2f753 | 129 | (tcon->ses->server)) { |
1da177e4 | 130 | struct nls_table *nls_codepage; |
50c2f753 | 131 | /* Give Demultiplex thread up to 10 seconds to |
09d1db5c SF |
132 | reconnect, should be greater than cifs socket |
133 | timeout which is 7 seconds */ | |
c18c842b | 134 | while (tcon->ses->server->tcpStatus == |
63135e08 | 135 | CifsNeedReconnect) { |
1da177e4 | 136 | wait_event_interruptible_timeout(tcon->ses->server->response_q, |
c18c842b | 137 | (tcon->ses->server->tcpStatus == |
63135e08 SF |
138 | CifsGood), 10 * HZ); |
139 | if (tcon->ses->server->tcpStatus == | |
140 | CifsNeedReconnect) { | |
1da177e4 | 141 | /* on "soft" mounts we wait once */ |
790fe579 | 142 | if ((tcon->retry == FALSE) || |
1da177e4 | 143 | (tcon->ses->status == CifsExiting)) { |
50c2f753 SF |
144 | cFYI(1, ("gave up waiting on " |
145 | "reconnect in smb_init")); | |
1da177e4 | 146 | return -EHOSTDOWN; |
09d1db5c SF |
147 | } /* else "hard" mount - keep retrying |
148 | until process is killed or server | |
149 | comes back on-line */ | |
1da177e4 LT |
150 | } else /* TCP session is reestablished now */ |
151 | break; | |
1da177e4 | 152 | } |
50c2f753 | 153 | |
1da177e4 LT |
154 | nls_codepage = load_nls_default(); |
155 | /* need to prevent multiple threads trying to | |
156 | simultaneously reconnect the same SMB session */ | |
157 | down(&tcon->ses->sesSem); | |
790fe579 | 158 | if (tcon->ses->status == CifsNeedReconnect) |
50c2f753 | 159 | rc = cifs_setup_session(0, tcon->ses, |
09d1db5c | 160 | nls_codepage); |
790fe579 | 161 | if (!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
1da177e4 | 162 | mark_open_files_invalid(tcon); |
50c2f753 | 163 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
8af18971 | 164 | tcon, nls_codepage); |
1da177e4 | 165 | up(&tcon->ses->sesSem); |
8af18971 SF |
166 | /* tell server which Unix caps we support */ |
167 | if (tcon->ses->capabilities & CAP_UNIX) | |
168 | reset_cifs_unix_caps(0 /* no xid */, | |
50c2f753 | 169 | tcon, |
8af18971 | 170 | NULL /* we do not know sb */, |
50c2f753 | 171 | NULL /* no vol info */); |
3e84469d SF |
172 | /* BB FIXME add code to check if wsize needs |
173 | update due to negotiated smb buffer size | |
174 | shrinking */ | |
790fe579 | 175 | if (rc == 0) |
1da177e4 LT |
176 | atomic_inc(&tconInfoReconnectCount); |
177 | ||
178 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
50c2f753 SF |
179 | /* Removed call to reopen open files here. |
180 | It is safer (and faster) to reopen files | |
09d1db5c | 181 | one at a time as needed in read and write */ |
1da177e4 | 182 | |
50c2f753 | 183 | /* Check if handle based operation so we |
09d1db5c SF |
184 | know whether we can continue or not without |
185 | returning to caller to reset file handle */ | |
50c2f753 | 186 | switch (smb_command) { |
1da177e4 LT |
187 | case SMB_COM_READ_ANDX: |
188 | case SMB_COM_WRITE_ANDX: | |
189 | case SMB_COM_CLOSE: | |
190 | case SMB_COM_FIND_CLOSE2: | |
191 | case SMB_COM_LOCKING_ANDX: { | |
192 | unload_nls(nls_codepage); | |
193 | return -EAGAIN; | |
194 | } | |
195 | } | |
196 | } else { | |
197 | up(&tcon->ses->sesSem); | |
198 | } | |
199 | unload_nls(nls_codepage); | |
200 | ||
201 | } else { | |
202 | return -EIO; | |
203 | } | |
204 | } | |
790fe579 | 205 | if (rc) |
1da177e4 LT |
206 | return rc; |
207 | ||
208 | *request_buf = cifs_small_buf_get(); | |
209 | if (*request_buf == NULL) { | |
210 | /* BB should we add a retry in here if not a writepage? */ | |
211 | return -ENOMEM; | |
212 | } | |
213 | ||
63135e08 | 214 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 215 | tcon, wct); |
1da177e4 | 216 | |
790fe579 SF |
217 | if (tcon != NULL) |
218 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 219 | |
1da177e4 | 220 | return rc; |
5815449d SF |
221 | } |
222 | ||
12b3b8ff | 223 | int |
50c2f753 | 224 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 225 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
226 | { |
227 | int rc; | |
50c2f753 | 228 | struct smb_hdr *buffer; |
12b3b8ff | 229 | |
5815449d | 230 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 231 | if (rc) |
12b3b8ff SF |
232 | return rc; |
233 | ||
04fdabe1 | 234 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
235 | buffer->Mid = GetNextMid(ses->server); |
236 | if (ses->capabilities & CAP_UNICODE) | |
237 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 238 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
239 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
240 | ||
241 | /* uid, tid can stay at zero as set in header assemble */ | |
242 | ||
50c2f753 | 243 | /* BB add support for turning on the signing when |
12b3b8ff SF |
244 | this function is used after 1st of session setup requests */ |
245 | ||
246 | return rc; | |
247 | } | |
1da177e4 LT |
248 | |
249 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
250 | static int | |
251 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
252 | void **request_buf /* returned */ , | |
253 | void **response_buf /* returned */ ) | |
254 | { | |
255 | int rc = 0; | |
256 | ||
257 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
258 | check for tcp and smb session status done differently | |
259 | for those three - in the calling routine */ | |
790fe579 SF |
260 | if (tcon) { |
261 | if (tcon->tidStatus == CifsExiting) { | |
6ab16d24 SF |
262 | /* only tree disconnect, open, and write, |
263 | (and ulogoff which does not have tcon) | |
264 | are allowed as we start force umount */ | |
790fe579 | 265 | if ((smb_command != SMB_COM_WRITE_ANDX) && |
6ab16d24 SF |
266 | (smb_command != SMB_COM_OPEN_ANDX) && |
267 | (smb_command != SMB_COM_TREE_DISCONNECT)) { | |
790fe579 | 268 | cFYI(1, ("can not send cmd %d while umounting", |
6ab16d24 SF |
269 | smb_command)); |
270 | return -ENODEV; | |
271 | } | |
272 | } | |
273 | ||
790fe579 | 274 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && |
50c2f753 | 275 | (tcon->ses->server)) { |
1da177e4 | 276 | struct nls_table *nls_codepage; |
09d1db5c SF |
277 | /* Give Demultiplex thread up to 10 seconds to |
278 | reconnect, should be greater than cifs socket | |
279 | timeout which is 7 seconds */ | |
63135e08 SF |
280 | while (tcon->ses->server->tcpStatus == |
281 | CifsNeedReconnect) { | |
1da177e4 | 282 | wait_event_interruptible_timeout(tcon->ses->server->response_q, |
63135e08 SF |
283 | (tcon->ses->server->tcpStatus == |
284 | CifsGood), 10 * HZ); | |
790fe579 | 285 | if (tcon->ses->server->tcpStatus == |
09d1db5c | 286 | CifsNeedReconnect) { |
1da177e4 | 287 | /* on "soft" mounts we wait once */ |
790fe579 | 288 | if ((tcon->retry == FALSE) || |
1da177e4 | 289 | (tcon->ses->status == CifsExiting)) { |
50c2f753 SF |
290 | cFYI(1, ("gave up waiting on " |
291 | "reconnect in smb_init")); | |
1da177e4 | 292 | return -EHOSTDOWN; |
09d1db5c SF |
293 | } /* else "hard" mount - keep retrying |
294 | until process is killed or server | |
295 | comes on-line */ | |
1da177e4 LT |
296 | } else /* TCP session is reestablished now */ |
297 | break; | |
1da177e4 | 298 | } |
1da177e4 LT |
299 | nls_codepage = load_nls_default(); |
300 | /* need to prevent multiple threads trying to | |
301 | simultaneously reconnect the same SMB session */ | |
302 | down(&tcon->ses->sesSem); | |
790fe579 | 303 | if (tcon->ses->status == CifsNeedReconnect) |
50c2f753 | 304 | rc = cifs_setup_session(0, tcon->ses, |
09d1db5c | 305 | nls_codepage); |
790fe579 | 306 | if (!rc && (tcon->tidStatus == CifsNeedReconnect)) { |
1da177e4 | 307 | mark_open_files_invalid(tcon); |
09d1db5c SF |
308 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
309 | tcon, nls_codepage); | |
1da177e4 | 310 | up(&tcon->ses->sesSem); |
8af18971 SF |
311 | /* tell server which Unix caps we support */ |
312 | if (tcon->ses->capabilities & CAP_UNIX) | |
313 | reset_cifs_unix_caps(0 /* no xid */, | |
50c2f753 | 314 | tcon, |
8af18971 SF |
315 | NULL /* do not know sb */, |
316 | NULL /* no vol info */); | |
3e84469d SF |
317 | /* BB FIXME add code to check if wsize needs |
318 | update due to negotiated smb buffer size | |
319 | shrinking */ | |
790fe579 | 320 | if (rc == 0) |
1da177e4 LT |
321 | atomic_inc(&tconInfoReconnectCount); |
322 | ||
323 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
50c2f753 SF |
324 | /* Removed call to reopen open files here. |
325 | It is safer (and faster) to reopen files | |
09d1db5c | 326 | one at a time as needed in read and write */ |
1da177e4 | 327 | |
50c2f753 | 328 | /* Check if handle based operation so we |
09d1db5c SF |
329 | know whether we can continue or not without |
330 | returning to caller to reset file handle */ | |
50c2f753 | 331 | switch (smb_command) { |
1da177e4 LT |
332 | case SMB_COM_READ_ANDX: |
333 | case SMB_COM_WRITE_ANDX: | |
334 | case SMB_COM_CLOSE: | |
335 | case SMB_COM_FIND_CLOSE2: | |
336 | case SMB_COM_LOCKING_ANDX: { | |
337 | unload_nls(nls_codepage); | |
338 | return -EAGAIN; | |
339 | } | |
340 | } | |
341 | } else { | |
342 | up(&tcon->ses->sesSem); | |
343 | } | |
344 | unload_nls(nls_codepage); | |
345 | ||
346 | } else { | |
347 | return -EIO; | |
348 | } | |
349 | } | |
790fe579 | 350 | if (rc) |
1da177e4 LT |
351 | return rc; |
352 | ||
353 | *request_buf = cifs_buf_get(); | |
354 | if (*request_buf == NULL) { | |
355 | /* BB should we add a retry in here if not a writepage? */ | |
356 | return -ENOMEM; | |
357 | } | |
358 | /* Although the original thought was we needed the response buf for */ | |
359 | /* potential retries of smb operations it turns out we can determine */ | |
360 | /* from the mid flags when the request buffer can be resent without */ | |
361 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 362 | if (response_buf) |
50c2f753 | 363 | *response_buf = *request_buf; |
1da177e4 LT |
364 | |
365 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
366 | wct /*wct */ ); | |
367 | ||
790fe579 SF |
368 | if (tcon != NULL) |
369 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 370 | |
1da177e4 LT |
371 | return rc; |
372 | } | |
373 | ||
50c2f753 | 374 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 LT |
375 | { |
376 | int rc = -EINVAL; | |
377 | int total_size; | |
50c2f753 | 378 | char *pBCC; |
1da177e4 LT |
379 | |
380 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
381 | /* check for parm and data offset going beyond end of smb */ | |
790fe579 SF |
382 | if (pSMB->hdr.WordCount >= 10) { |
383 | if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
1da177e4 LT |
384 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { |
385 | /* check that bcc is at least as big as parms + data */ | |
386 | /* check that bcc is less than negotiated smb buffer */ | |
387 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
790fe579 | 388 | if (total_size < 512) { |
c18c842b | 389 | total_size += |
63135e08 | 390 | le16_to_cpu(pSMB->t2_rsp.DataCount); |
1da177e4 | 391 | /* BCC le converted in SendReceive */ |
50c2f753 | 392 | pBCC = (pSMB->hdr.WordCount * 2) + |
09d1db5c | 393 | sizeof(struct smb_hdr) + |
1da177e4 | 394 | (char *)pSMB; |
790fe579 | 395 | if ((total_size <= (*(u16 *)pBCC)) && |
50c2f753 | 396 | (total_size < |
1da177e4 LT |
397 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { |
398 | return 0; | |
399 | } | |
1da177e4 LT |
400 | } |
401 | } | |
402 | } | |
50c2f753 | 403 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 LT |
404 | sizeof(struct smb_t2_rsp) + 16); |
405 | return rc; | |
406 | } | |
407 | int | |
408 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
409 | { | |
410 | NEGOTIATE_REQ *pSMB; | |
411 | NEGOTIATE_RSP *pSMBr; | |
412 | int rc = 0; | |
413 | int bytes_returned; | |
3979877e | 414 | int i; |
50c2f753 | 415 | struct TCP_Server_Info *server; |
1da177e4 | 416 | u16 count; |
750d1151 | 417 | unsigned int secFlags; |
733f99ac | 418 | u16 dialect; |
1da177e4 | 419 | |
790fe579 | 420 | if (ses->server) |
1da177e4 LT |
421 | server = ses->server; |
422 | else { | |
423 | rc = -EIO; | |
424 | return rc; | |
425 | } | |
426 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
427 | (void **) &pSMB, (void **) &pSMBr); | |
428 | if (rc) | |
429 | return rc; | |
750d1151 SF |
430 | |
431 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 432 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 433 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 SF |
434 | else /* if override flags set only sign/seal OR them with global auth */ |
435 | secFlags = extended_security | ses->overrideSecFlg; | |
436 | ||
762e5ab7 | 437 | cFYI(1, ("secFlags 0x%x", secFlags)); |
f40c5628 | 438 | |
1982c344 | 439 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 440 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 441 | |
100c1ddc | 442 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 443 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d SF |
444 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
445 | cFYI(1, ("Kerberos only mechanism, enable extended security")); | |
446 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
447 | } | |
50c2f753 | 448 | |
3979877e | 449 | count = 0; |
50c2f753 | 450 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
451 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
452 | count += strlen(protocols[i].name) + 1; | |
453 | /* null at end of source and target buffers anyway */ | |
454 | } | |
1da177e4 LT |
455 | pSMB->hdr.smb_buf_length += count; |
456 | pSMB->ByteCount = cpu_to_le16(count); | |
457 | ||
458 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
459 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 460 | if (rc != 0) |
254e55ed SF |
461 | goto neg_err_exit; |
462 | ||
733f99ac | 463 | dialect = le16_to_cpu(pSMBr->DialectIndex); |
790fe579 | 464 | cFYI(1, ("Dialect: %d", dialect)); |
254e55ed | 465 | /* Check wct = 1 error case */ |
790fe579 | 466 | if ((pSMBr->hdr.WordCount < 13) || (dialect == BAD_PROT)) { |
254e55ed | 467 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 468 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
469 | could not negotiate a common dialect */ |
470 | rc = -EOPNOTSUPP; | |
471 | goto neg_err_exit; | |
50c2f753 | 472 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 473 | } else if ((pSMBr->hdr.WordCount == 13) |
733f99ac AV |
474 | && ((dialect == LANMAN_PROT) |
475 | || (dialect == LANMAN2_PROT))) { | |
b815f1e5 | 476 | __s16 tmp; |
50c2f753 | 477 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 478 | |
790fe579 | 479 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 480 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
481 | server->secType = LANMAN; |
482 | else { | |
483 | cERROR(1, ("mount failed weak security disabled" | |
484 | " in /proc/fs/cifs/SecurityFlags")); | |
3979877e SF |
485 | rc = -EOPNOTSUPP; |
486 | goto neg_err_exit; | |
50c2f753 | 487 | } |
254e55ed SF |
488 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
489 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
490 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 491 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
254e55ed SF |
492 | GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey); |
493 | /* even though we do not use raw we might as well set this | |
494 | accurately, in case we ever find a need for it */ | |
790fe579 | 495 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
254e55ed SF |
496 | server->maxRw = 0xFF00; |
497 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
498 | } else { | |
499 | server->maxRw = 0;/* we do not need to use raw anyway */ | |
500 | server->capabilities = CAP_MPX_MODE; | |
501 | } | |
b815f1e5 | 502 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 503 | if (tmp == -1) { |
25ee4a98 SF |
504 | /* OS/2 often does not set timezone therefore |
505 | * we must use server time to calc time zone. | |
b815f1e5 SF |
506 | * Could deviate slightly from the right zone. |
507 | * Smallest defined timezone difference is 15 minutes | |
508 | * (i.e. Nepal). Rounding up/down is done to match | |
509 | * this requirement. | |
25ee4a98 | 510 | */ |
b815f1e5 | 511 | int val, seconds, remain, result; |
25ee4a98 SF |
512 | struct timespec ts, utc; |
513 | utc = CURRENT_TIME; | |
514 | ts = cnvrtDosUnixTm(le16_to_cpu(rsp->SrvTime.Date), | |
515 | le16_to_cpu(rsp->SrvTime.Time)); | |
50c2f753 SF |
516 | cFYI(1, ("SrvTime %d sec since 1970 (utc: %d) diff: %d", |
517 | (int)ts.tv_sec, (int)utc.tv_sec, | |
25ee4a98 | 518 | (int)(utc.tv_sec - ts.tv_sec))); |
b815f1e5 | 519 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 520 | seconds = abs(val); |
947a5067 | 521 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 522 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 523 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 524 | result += MIN_TZ_ADJ; |
790fe579 | 525 | if (val < 0) |
b815f1e5 SF |
526 | result = - result; |
527 | server->timeAdj = result; | |
25ee4a98 | 528 | } else { |
b815f1e5 SF |
529 | server->timeAdj = (int)tmp; |
530 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 531 | } |
790fe579 | 532 | cFYI(1, ("server->timeAdj: %d seconds", server->timeAdj)); |
25ee4a98 | 533 | |
3979877e | 534 | |
254e55ed | 535 | /* BB get server time for time conversions and add |
50c2f753 | 536 | code to use it and timezone since this is not UTC */ |
3979877e | 537 | |
50c2f753 | 538 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 539 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
254e55ed SF |
540 | memcpy(server->cryptKey, rsp->EncryptionKey, |
541 | CIFS_CRYPTO_KEY_SIZE); | |
542 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
543 | rc = -EIO; /* need cryptkey unless plain text */ | |
544 | goto neg_err_exit; | |
545 | } | |
3979877e | 546 | |
790fe579 | 547 | cFYI(1, ("LANMAN negotiated")); |
254e55ed SF |
548 | /* we will not end up setting signing flags - as no signing |
549 | was in LANMAN and server did not return the flags on */ | |
550 | goto signing_check; | |
7c7b25bc | 551 | #else /* weak security disabled */ |
790fe579 | 552 | } else if (pSMBr->hdr.WordCount == 13) { |
50c2f753 | 553 | cERROR(1, ("mount failed, cifs module not built " |
254e55ed | 554 | "with CIFS_WEAK_PW_HASH support")); |
7c7b25bc SF |
555 | rc = -EOPNOTSUPP; |
556 | #endif /* WEAK_PW_HASH */ | |
254e55ed | 557 | goto neg_err_exit; |
790fe579 | 558 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
559 | /* unknown wct */ |
560 | rc = -EOPNOTSUPP; | |
561 | goto neg_err_exit; | |
562 | } | |
563 | /* else wct == 17 NTLM */ | |
564 | server->secMode = pSMBr->SecurityMode; | |
790fe579 SF |
565 | if ((server->secMode & SECMODE_USER) == 0) |
566 | cFYI(1, ("share mode security")); | |
bdc4bf6e | 567 | |
790fe579 | 568 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 569 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 570 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 571 | #endif /* CIFS_WEAK_PW_HASH */ |
50c2f753 | 572 | cERROR(1, ("Server requests plain text password" |
254e55ed | 573 | " but client support disabled")); |
9312f675 | 574 | |
790fe579 | 575 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 576 | server->secType = NTLMv2; |
790fe579 | 577 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 578 | server->secType = NTLM; |
790fe579 | 579 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 580 | server->secType = NTLMv2; |
a013689d SF |
581 | else if (secFlags & CIFSSEC_MAY_KRB5) |
582 | server->secType = Kerberos; | |
583 | else if (secFlags & CIFSSEC_MAY_LANMAN) | |
584 | server->secType = LANMAN; | |
585 | /* #ifdef CONFIG_CIFS_EXPERIMENTAL | |
586 | else if (secFlags & CIFSSEC_MAY_PLNTXT) | |
587 | server->secType = ?? | |
588 | #endif */ | |
589 | else { | |
590 | rc = -EOPNOTSUPP; | |
591 | cERROR(1, ("Invalid security type")); | |
592 | goto neg_err_exit; | |
593 | } | |
594 | /* else ... any others ...? */ | |
254e55ed SF |
595 | |
596 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
597 | little endian */ | |
598 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
599 | /* probably no need to store and check maxvcs */ | |
600 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 601 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
254e55ed SF |
602 | server->maxRw = le32_to_cpu(pSMBr->MaxRawSize); |
603 | cFYI(0, ("Max buf = %d", ses->server->maxBuf)); | |
604 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); | |
605 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
b815f1e5 SF |
606 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
607 | server->timeAdj *= 60; | |
254e55ed SF |
608 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
609 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
610 | CIFS_CRYPTO_KEY_SIZE); | |
611 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
612 | && (pSMBr->EncryptionKeyLength == 0)) { | |
613 | /* decode security blob */ | |
614 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
615 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
616 | goto neg_err_exit; | |
617 | } | |
1da177e4 | 618 | |
254e55ed SF |
619 | /* BB might be helpful to save off the domain of server here */ |
620 | ||
50c2f753 | 621 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed SF |
622 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
623 | count = pSMBr->ByteCount; | |
624 | if (count < 16) | |
625 | rc = -EIO; | |
626 | else if (count == 16) { | |
627 | server->secType = RawNTLMSSP; | |
628 | if (server->socketUseCount.counter > 1) { | |
629 | if (memcmp(server->server_GUID, | |
630 | pSMBr->u.extended_response. | |
631 | GUID, 16) != 0) { | |
632 | cFYI(1, ("server UID changed")); | |
1da177e4 | 633 | memcpy(server->server_GUID, |
254e55ed SF |
634 | pSMBr->u.extended_response.GUID, |
635 | 16); | |
1da177e4 | 636 | } |
254e55ed SF |
637 | } else |
638 | memcpy(server->server_GUID, | |
639 | pSMBr->u.extended_response.GUID, 16); | |
640 | } else { | |
641 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
642 | SecurityBlob, | |
643 | count - 16, | |
644 | &server->secType); | |
790fe579 | 645 | if (rc == 1) { |
254e55ed SF |
646 | /* BB Need to fill struct for sessetup here */ |
647 | rc = -EOPNOTSUPP; | |
648 | } else { | |
649 | rc = -EINVAL; | |
1da177e4 | 650 | } |
1da177e4 | 651 | } |
254e55ed SF |
652 | } else |
653 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
654 | ||
6344a423 | 655 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 656 | signing_check: |
6344a423 | 657 | #endif |
762e5ab7 SF |
658 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
659 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
660 | so if this is zero it means that signing is disabled */ | |
661 | cFYI(1, ("Signing disabled")); | |
790fe579 | 662 | if (server->secMode & SECMODE_SIGN_REQUIRED) |
762e5ab7 SF |
663 | cERROR(1, ("Server requires " |
664 | "/proc/fs/cifs/PacketSigningEnabled " | |
665 | "to be on")); | |
50c2f753 | 666 | server->secMode &= |
254e55ed | 667 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
668 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
669 | /* signing required */ | |
38c10a1d | 670 | cFYI(1, ("Must sign - secFlags 0x%x", secFlags)); |
762e5ab7 SF |
671 | if ((server->secMode & |
672 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
673 | cERROR(1, | |
674 | ("signing required but server lacks support")); | |
38c10a1d | 675 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
676 | } else |
677 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
678 | } else { | |
679 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 680 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 681 | server->secMode &= |
254e55ed | 682 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 683 | } |
50c2f753 SF |
684 | |
685 | neg_err_exit: | |
4a6d87f1 | 686 | cifs_buf_release(pSMB); |
254e55ed | 687 | |
790fe579 | 688 | cFYI(1, ("negprot rc %d", rc)); |
1da177e4 LT |
689 | return rc; |
690 | } | |
691 | ||
692 | int | |
693 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
694 | { | |
695 | struct smb_hdr *smb_buffer; | |
696 | struct smb_hdr *smb_buffer_response; /* BB removeme BB */ | |
697 | int rc = 0; | |
698 | int length; | |
699 | ||
700 | cFYI(1, ("In tree disconnect")); | |
701 | /* | |
702 | * If last user of the connection and | |
703 | * connection alive - disconnect it | |
704 | * If this is the last connection on the server session disconnect it | |
50c2f753 | 705 | * (and inside session disconnect we should check if tcp socket needs |
1da177e4 LT |
706 | * to be freed and kernel thread woken up). |
707 | */ | |
708 | if (tcon) | |
709 | down(&tcon->tconSem); | |
710 | else | |
711 | return -EIO; | |
712 | ||
713 | atomic_dec(&tcon->useCount); | |
714 | if (atomic_read(&tcon->useCount) > 0) { | |
715 | up(&tcon->tconSem); | |
716 | return -EBUSY; | |
717 | } | |
718 | ||
50c2f753 | 719 | /* No need to return error on this operation if tid invalidated and |
1da177e4 | 720 | closed on server already e.g. due to tcp session crashing */ |
790fe579 | 721 | if (tcon->tidStatus == CifsNeedReconnect) { |
1da177e4 | 722 | up(&tcon->tconSem); |
50c2f753 | 723 | return 0; |
1da177e4 LT |
724 | } |
725 | ||
790fe579 | 726 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) { |
1da177e4 LT |
727 | up(&tcon->tconSem); |
728 | return -EIO; | |
729 | } | |
50c2f753 | 730 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 731 | (void **)&smb_buffer); |
1da177e4 LT |
732 | if (rc) { |
733 | up(&tcon->tconSem); | |
734 | return rc; | |
735 | } else { | |
736 | smb_buffer_response = smb_buffer; /* BB removeme BB */ | |
cd63499c | 737 | } |
1da177e4 LT |
738 | rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response, |
739 | &length, 0); | |
740 | if (rc) | |
966ca923 | 741 | cFYI(1, ("Tree disconnect failed %d", rc)); |
1da177e4 LT |
742 | |
743 | if (smb_buffer) | |
744 | cifs_small_buf_release(smb_buffer); | |
745 | up(&tcon->tconSem); | |
746 | ||
50c2f753 | 747 | /* No need to return error on this operation if tid invalidated and |
1da177e4 LT |
748 | closed on server already e.g. due to tcp session crashing */ |
749 | if (rc == -EAGAIN) | |
750 | rc = 0; | |
751 | ||
752 | return rc; | |
753 | } | |
754 | ||
755 | int | |
756 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
757 | { | |
758 | struct smb_hdr *smb_buffer_response; | |
759 | LOGOFF_ANDX_REQ *pSMB; | |
760 | int rc = 0; | |
761 | int length; | |
762 | ||
763 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
764 | if (ses) | |
765 | down(&ses->sesSem); | |
766 | else | |
767 | return -EIO; | |
768 | ||
769 | atomic_dec(&ses->inUse); | |
770 | if (atomic_read(&ses->inUse) > 0) { | |
771 | up(&ses->sesSem); | |
772 | return -EBUSY; | |
773 | } | |
774 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); | |
775 | if (rc) { | |
776 | up(&ses->sesSem); | |
777 | return rc; | |
778 | } | |
779 | ||
780 | smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */ | |
50c2f753 | 781 | |
790fe579 | 782 | if (ses->server) { |
1982c344 SF |
783 | pSMB->hdr.Mid = GetNextMid(ses->server); |
784 | ||
790fe579 | 785 | if (ses->server->secMode & |
1da177e4 LT |
786 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
787 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
788 | } | |
789 | ||
790 | pSMB->hdr.Uid = ses->Suid; | |
791 | ||
792 | pSMB->AndXCommand = 0xFF; | |
793 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
794 | smb_buffer_response, &length, 0); | |
795 | if (ses->server) { | |
796 | atomic_dec(&ses->server->socketUseCount); | |
797 | if (atomic_read(&ses->server->socketUseCount) == 0) { | |
798 | spin_lock(&GlobalMid_Lock); | |
799 | ses->server->tcpStatus = CifsExiting; | |
800 | spin_unlock(&GlobalMid_Lock); | |
801 | rc = -ESHUTDOWN; | |
802 | } | |
803 | } | |
a59c6586 | 804 | up(&ses->sesSem); |
4a6d87f1 | 805 | cifs_small_buf_release(pSMB); |
1da177e4 LT |
806 | |
807 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 808 | since server closed smb session, no sense reporting |
1da177e4 LT |
809 | error */ |
810 | if (rc == -EAGAIN) | |
811 | rc = 0; | |
812 | return rc; | |
813 | } | |
814 | ||
2d785a50 SF |
815 | int |
816 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
817 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
818 | { | |
819 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
820 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
821 | struct unlink_psx_rq *pRqD; | |
822 | int name_len; | |
823 | int rc = 0; | |
824 | int bytes_returned = 0; | |
825 | __u16 params, param_offset, offset, byte_count; | |
826 | ||
827 | cFYI(1, ("In POSIX delete")); | |
828 | PsxDelete: | |
829 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
830 | (void **) &pSMBr); | |
831 | if (rc) | |
832 | return rc; | |
833 | ||
834 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
835 | name_len = | |
836 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
837 | PATH_MAX, nls_codepage, remap); | |
838 | name_len++; /* trailing null */ | |
839 | name_len *= 2; | |
840 | } else { /* BB add path length overrun check */ | |
841 | name_len = strnlen(fileName, PATH_MAX); | |
842 | name_len++; /* trailing null */ | |
843 | strncpy(pSMB->FileName, fileName, name_len); | |
844 | } | |
845 | ||
846 | params = 6 + name_len; | |
847 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
848 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
849 | pSMB->MaxSetupCount = 0; | |
850 | pSMB->Reserved = 0; | |
851 | pSMB->Flags = 0; | |
852 | pSMB->Timeout = 0; | |
853 | pSMB->Reserved2 = 0; | |
854 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
855 | InformationLevel) - 4; | |
856 | offset = param_offset + params; | |
857 | ||
858 | /* Setup pointer to Request Data (inode type) */ | |
859 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
860 | pRqD->type = cpu_to_le16(type); | |
861 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
862 | pSMB->DataOffset = cpu_to_le16(offset); | |
863 | pSMB->SetupCount = 1; | |
864 | pSMB->Reserved3 = 0; | |
865 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
866 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
867 | ||
868 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
869 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
870 | pSMB->ParameterCount = cpu_to_le16(params); | |
871 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
872 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
873 | pSMB->Reserved4 = 0; | |
874 | pSMB->hdr.smb_buf_length += byte_count; | |
875 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
876 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
877 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
878 | if (rc) { | |
879 | cFYI(1, ("Posix delete returned %d", rc)); | |
880 | } | |
881 | cifs_buf_release(pSMB); | |
882 | ||
883 | cifs_stats_inc(&tcon->num_deletes); | |
884 | ||
885 | if (rc == -EAGAIN) | |
886 | goto PsxDelete; | |
887 | ||
888 | return rc; | |
889 | } | |
890 | ||
1da177e4 | 891 | int |
737b758c SF |
892 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
893 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
894 | { |
895 | DELETE_FILE_REQ *pSMB = NULL; | |
896 | DELETE_FILE_RSP *pSMBr = NULL; | |
897 | int rc = 0; | |
898 | int bytes_returned; | |
899 | int name_len; | |
900 | ||
901 | DelFileRetry: | |
902 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
903 | (void **) &pSMBr); | |
904 | if (rc) | |
905 | return rc; | |
906 | ||
907 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
908 | name_len = | |
50c2f753 | 909 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 910 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
911 | name_len++; /* trailing null */ |
912 | name_len *= 2; | |
09d1db5c | 913 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
914 | name_len = strnlen(fileName, PATH_MAX); |
915 | name_len++; /* trailing null */ | |
916 | strncpy(pSMB->fileName, fileName, name_len); | |
917 | } | |
918 | pSMB->SearchAttributes = | |
919 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
920 | pSMB->BufferFormat = 0x04; | |
921 | pSMB->hdr.smb_buf_length += name_len + 1; | |
922 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
923 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
924 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 925 | cifs_stats_inc(&tcon->num_deletes); |
1da177e4 LT |
926 | if (rc) { |
927 | cFYI(1, ("Error in RMFile = %d", rc)); | |
50c2f753 | 928 | } |
1da177e4 LT |
929 | |
930 | cifs_buf_release(pSMB); | |
931 | if (rc == -EAGAIN) | |
932 | goto DelFileRetry; | |
933 | ||
934 | return rc; | |
935 | } | |
936 | ||
937 | int | |
50c2f753 | 938 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 939 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
940 | { |
941 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
942 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
943 | int rc = 0; | |
944 | int bytes_returned; | |
945 | int name_len; | |
946 | ||
947 | cFYI(1, ("In CIFSSMBRmDir")); | |
948 | RmDirRetry: | |
949 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
950 | (void **) &pSMBr); | |
951 | if (rc) | |
952 | return rc; | |
953 | ||
954 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
955 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
956 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
957 | name_len++; /* trailing null */ |
958 | name_len *= 2; | |
09d1db5c | 959 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
960 | name_len = strnlen(dirName, PATH_MAX); |
961 | name_len++; /* trailing null */ | |
962 | strncpy(pSMB->DirName, dirName, name_len); | |
963 | } | |
964 | ||
965 | pSMB->BufferFormat = 0x04; | |
966 | pSMB->hdr.smb_buf_length += name_len + 1; | |
967 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
968 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
969 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 970 | cifs_stats_inc(&tcon->num_rmdirs); |
1da177e4 LT |
971 | if (rc) { |
972 | cFYI(1, ("Error in RMDir = %d", rc)); | |
973 | } | |
1da177e4 LT |
974 | |
975 | cifs_buf_release(pSMB); | |
976 | if (rc == -EAGAIN) | |
977 | goto RmDirRetry; | |
978 | return rc; | |
979 | } | |
980 | ||
981 | int | |
982 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 983 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
984 | { |
985 | int rc = 0; | |
986 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
987 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
988 | int bytes_returned; | |
989 | int name_len; | |
990 | ||
991 | cFYI(1, ("In CIFSSMBMkDir")); | |
992 | MkDirRetry: | |
993 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
994 | (void **) &pSMBr); | |
995 | if (rc) | |
996 | return rc; | |
997 | ||
998 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 999 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 1000 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1001 | name_len++; /* trailing null */ |
1002 | name_len *= 2; | |
09d1db5c | 1003 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1004 | name_len = strnlen(name, PATH_MAX); |
1005 | name_len++; /* trailing null */ | |
1006 | strncpy(pSMB->DirName, name, name_len); | |
1007 | } | |
1008 | ||
1009 | pSMB->BufferFormat = 0x04; | |
1010 | pSMB->hdr.smb_buf_length += name_len + 1; | |
1011 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
1012 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1013 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1014 | cifs_stats_inc(&tcon->num_mkdirs); |
1da177e4 LT |
1015 | if (rc) { |
1016 | cFYI(1, ("Error in Mkdir = %d", rc)); | |
1017 | } | |
a5a2b489 | 1018 | |
1da177e4 LT |
1019 | cifs_buf_release(pSMB); |
1020 | if (rc == -EAGAIN) | |
1021 | goto MkDirRetry; | |
1022 | return rc; | |
1023 | } | |
1024 | ||
2dd29d31 SF |
1025 | int |
1026 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
1027 | __u64 mode, __u16 * netfid, FILE_UNIX_BASIC_INFO *pRetData, | |
50c2f753 | 1028 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1029 | const struct nls_table *nls_codepage, int remap) |
1030 | { | |
1031 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1032 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1033 | int name_len; | |
1034 | int rc = 0; | |
1035 | int bytes_returned = 0; | |
2dd29d31 SF |
1036 | __u16 params, param_offset, offset, byte_count, count; |
1037 | OPEN_PSX_REQ * pdata; | |
1038 | OPEN_PSX_RSP * psx_rsp; | |
1039 | ||
1040 | cFYI(1, ("In POSIX Create")); | |
1041 | PsxCreat: | |
1042 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1043 | (void **) &pSMBr); | |
1044 | if (rc) | |
1045 | return rc; | |
1046 | ||
1047 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1048 | name_len = | |
1049 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1050 | PATH_MAX, nls_codepage, remap); | |
1051 | name_len++; /* trailing null */ | |
1052 | name_len *= 2; | |
1053 | } else { /* BB improve the check for buffer overruns BB */ | |
1054 | name_len = strnlen(name, PATH_MAX); | |
1055 | name_len++; /* trailing null */ | |
1056 | strncpy(pSMB->FileName, name, name_len); | |
1057 | } | |
1058 | ||
1059 | params = 6 + name_len; | |
1060 | count = sizeof(OPEN_PSX_REQ); | |
1061 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1062 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1063 | pSMB->MaxSetupCount = 0; | |
1064 | pSMB->Reserved = 0; | |
1065 | pSMB->Flags = 0; | |
1066 | pSMB->Timeout = 0; | |
1067 | pSMB->Reserved2 = 0; | |
1068 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1069 | InformationLevel) - 4; |
2dd29d31 | 1070 | offset = param_offset + params; |
2dd29d31 SF |
1071 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
1072 | pdata->Level = SMB_QUERY_FILE_UNIX_BASIC; | |
1073 | pdata->Permissions = cpu_to_le64(mode); | |
50c2f753 | 1074 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1075 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1076 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1077 | pSMB->DataOffset = cpu_to_le16(offset); | |
1078 | pSMB->SetupCount = 1; | |
1079 | pSMB->Reserved3 = 0; | |
1080 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1081 | byte_count = 3 /* pad */ + params + count; | |
1082 | ||
1083 | pSMB->DataCount = cpu_to_le16(count); | |
1084 | pSMB->ParameterCount = cpu_to_le16(params); | |
1085 | pSMB->TotalDataCount = pSMB->DataCount; | |
1086 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1087 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1088 | pSMB->Reserved4 = 0; | |
50c2f753 | 1089 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1090 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1091 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1092 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1093 | if (rc) { | |
1094 | cFYI(1, ("Posix create returned %d", rc)); | |
1095 | goto psx_create_err; | |
1096 | } | |
1097 | ||
790fe579 | 1098 | cFYI(1, ("copying inode info")); |
2dd29d31 SF |
1099 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1100 | ||
1101 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1102 | rc = -EIO; /* bad smb */ | |
1103 | goto psx_create_err; | |
1104 | } | |
1105 | ||
1106 | /* copy return information to pRetData */ | |
50c2f753 | 1107 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1108 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1109 | |
2dd29d31 | 1110 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1111 | if (netfid) |
2dd29d31 SF |
1112 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1113 | /* Let caller know file was created so we can set the mode. */ | |
1114 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1115 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1116 | *pOplock |= CIFS_CREATE_ACTION; |
1117 | /* check to make sure response data is there */ | |
790fe579 | 1118 | if (psx_rsp->ReturnedLevel != SMB_QUERY_FILE_UNIX_BASIC) { |
cbac3cba SF |
1119 | pRetData->Type = -1; /* unknown */ |
1120 | #ifdef CONFIG_CIFS_DEBUG2 | |
790fe579 | 1121 | cFYI(1, ("unknown type")); |
cbac3cba SF |
1122 | #endif |
1123 | } else { | |
790fe579 | 1124 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1125 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
50c2f753 | 1126 | cERROR(1, ("Open response data too small")); |
2dd29d31 SF |
1127 | pRetData->Type = -1; |
1128 | goto psx_create_err; | |
1129 | } | |
50c2f753 | 1130 | memcpy((char *) pRetData, |
cbac3cba | 1131 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1132 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1133 | } |
2dd29d31 SF |
1134 | |
1135 | psx_create_err: | |
1136 | cifs_buf_release(pSMB); | |
1137 | ||
1138 | cifs_stats_inc(&tcon->num_mkdirs); | |
1139 | ||
1140 | if (rc == -EAGAIN) | |
1141 | goto PsxCreat; | |
1142 | ||
50c2f753 | 1143 | return rc; |
2dd29d31 SF |
1144 | } |
1145 | ||
a9d02ad4 SF |
1146 | static __u16 convert_disposition(int disposition) |
1147 | { | |
1148 | __u16 ofun = 0; | |
1149 | ||
1150 | switch (disposition) { | |
1151 | case FILE_SUPERSEDE: | |
1152 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1153 | break; | |
1154 | case FILE_OPEN: | |
1155 | ofun = SMBOPEN_OAPPEND; | |
1156 | break; | |
1157 | case FILE_CREATE: | |
1158 | ofun = SMBOPEN_OCREATE; | |
1159 | break; | |
1160 | case FILE_OPEN_IF: | |
1161 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1162 | break; | |
1163 | case FILE_OVERWRITE: | |
1164 | ofun = SMBOPEN_OTRUNC; | |
1165 | break; | |
1166 | case FILE_OVERWRITE_IF: | |
1167 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1168 | break; | |
1169 | default: | |
790fe579 | 1170 | cFYI(1, ("unknown disposition %d", disposition)); |
a9d02ad4 SF |
1171 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1172 | } | |
1173 | return ofun; | |
1174 | } | |
1175 | ||
1176 | int | |
1177 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1178 | const char *fileName, const int openDisposition, | |
1179 | const int access_flags, const int create_options, __u16 * netfid, | |
50c2f753 | 1180 | int *pOplock, FILE_ALL_INFO * pfile_info, |
a9d02ad4 SF |
1181 | const struct nls_table *nls_codepage, int remap) |
1182 | { | |
1183 | int rc = -EACCES; | |
1184 | OPENX_REQ *pSMB = NULL; | |
1185 | OPENX_RSP *pSMBr = NULL; | |
1186 | int bytes_returned; | |
1187 | int name_len; | |
1188 | __u16 count; | |
1189 | ||
1190 | OldOpenRetry: | |
1191 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1192 | (void **) &pSMBr); | |
1193 | if (rc) | |
1194 | return rc; | |
1195 | ||
1196 | pSMB->AndXCommand = 0xFF; /* none */ | |
1197 | ||
1198 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1199 | count = 1; /* account for one byte pad to word boundary */ | |
1200 | name_len = | |
1201 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1202 | fileName, PATH_MAX, nls_codepage, remap); | |
1203 | name_len++; /* trailing null */ | |
1204 | name_len *= 2; | |
1205 | } else { /* BB improve check for buffer overruns BB */ | |
1206 | count = 0; /* no pad */ | |
1207 | name_len = strnlen(fileName, PATH_MAX); | |
1208 | name_len++; /* trailing null */ | |
1209 | strncpy(pSMB->fileName, fileName, name_len); | |
1210 | } | |
1211 | if (*pOplock & REQ_OPLOCK) | |
1212 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1213 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1214 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1215 | |
a9d02ad4 SF |
1216 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
1217 | /* BB fixme add conversion for access_flags to bits 0 - 2 of mode */ | |
1218 | /* 0 = read | |
1219 | 1 = write | |
1220 | 2 = rw | |
1221 | 3 = execute | |
50c2f753 | 1222 | */ |
a9d02ad4 SF |
1223 | pSMB->Mode = cpu_to_le16(2); |
1224 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ | |
1225 | /* set file as system file if special file such | |
1226 | as fifo and server expecting SFU style and | |
1227 | no Unix extensions */ | |
1228 | ||
790fe579 SF |
1229 | if (create_options & CREATE_OPTION_SPECIAL) |
1230 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
1231 | else | |
3e87d803 | 1232 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); /* BB FIXME */ |
a9d02ad4 SF |
1233 | |
1234 | /* if ((omode & S_IWUGO) == 0) | |
1235 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/ | |
1236 | /* Above line causes problems due to vfs splitting create into two | |
1237 | pieces - need to set mode after file created not while it is | |
1238 | being created */ | |
1239 | ||
1240 | /* BB FIXME BB */ | |
50c2f753 SF |
1241 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1242 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1243 | /* BB FIXME END BB */ |
3e87d803 SF |
1244 | |
1245 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1246 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1247 | count += name_len; |
1248 | pSMB->hdr.smb_buf_length += count; | |
1249 | ||
1250 | pSMB->ByteCount = cpu_to_le16(count); | |
1251 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1252 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 1253 | (struct smb_hdr *) pSMBr, &bytes_returned, 1); |
a9d02ad4 SF |
1254 | cifs_stats_inc(&tcon->num_opens); |
1255 | if (rc) { | |
1256 | cFYI(1, ("Error in Open = %d", rc)); | |
1257 | } else { | |
1258 | /* BB verify if wct == 15 */ | |
1259 | ||
1260 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field BB */ | |
1261 | ||
1262 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1263 | /* Let caller know file was created so we can set the mode. */ | |
1264 | /* Do we care about the CreateAction in any other cases? */ | |
1265 | /* BB FIXME BB */ | |
790fe579 | 1266 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1267 | *pOplock |= CIFS_CREATE_ACTION; */ |
1268 | /* BB FIXME END */ | |
1269 | ||
790fe579 | 1270 | if (pfile_info) { |
a9d02ad4 SF |
1271 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1272 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1273 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1274 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1275 | pfile_info->Attributes = |
50c2f753 | 1276 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1277 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1278 | pfile_info->AllocationSize = |
1279 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1280 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 SF |
1281 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
1282 | } | |
1283 | } | |
1284 | ||
1285 | cifs_buf_release(pSMB); | |
1286 | if (rc == -EAGAIN) | |
1287 | goto OldOpenRetry; | |
1288 | return rc; | |
1289 | } | |
1290 | ||
1da177e4 LT |
1291 | int |
1292 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1293 | const char *fileName, const int openDisposition, | |
1294 | const int access_flags, const int create_options, __u16 * netfid, | |
50c2f753 | 1295 | int *pOplock, FILE_ALL_INFO * pfile_info, |
737b758c | 1296 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1297 | { |
1298 | int rc = -EACCES; | |
1299 | OPEN_REQ *pSMB = NULL; | |
1300 | OPEN_RSP *pSMBr = NULL; | |
1301 | int bytes_returned; | |
1302 | int name_len; | |
1303 | __u16 count; | |
1304 | ||
1305 | openRetry: | |
1306 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1307 | (void **) &pSMBr); | |
1308 | if (rc) | |
1309 | return rc; | |
1310 | ||
1311 | pSMB->AndXCommand = 0xFF; /* none */ | |
1312 | ||
1313 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1314 | count = 1; /* account for one byte pad to word boundary */ | |
1315 | name_len = | |
b1a45695 | 1316 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1317 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1318 | name_len++; /* trailing null */ |
1319 | name_len *= 2; | |
1320 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1321 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1322 | count = 0; /* no pad */ |
1323 | name_len = strnlen(fileName, PATH_MAX); | |
1324 | name_len++; /* trailing null */ | |
1325 | pSMB->NameLength = cpu_to_le16(name_len); | |
1326 | strncpy(pSMB->fileName, fileName, name_len); | |
1327 | } | |
1328 | if (*pOplock & REQ_OPLOCK) | |
1329 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1330 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1331 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1332 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1333 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1334 | /* set file as system file if special file such |
1335 | as fifo and server expecting SFU style and | |
1336 | no Unix extensions */ | |
790fe579 | 1337 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1338 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1339 | else | |
1340 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
1da177e4 LT |
1341 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1342 | /* but it helps speed up case sensitive checks for other | |
1343 | servers such as Samba */ | |
1344 | if (tcon->ses->capabilities & CAP_UNIX) | |
1345 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1346 | ||
1347 | /* if ((omode & S_IWUGO) == 0) | |
1348 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/ | |
1349 | /* Above line causes problems due to vfs splitting create into two | |
1350 | pieces - need to set mode after file created not while it is | |
1351 | being created */ | |
1352 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1353 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1354 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1355 | /* BB Expirement with various impersonation levels and verify */ |
1356 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1357 | pSMB->SecurityFlags = |
1358 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1359 | ||
1360 | count += name_len; | |
1361 | pSMB->hdr.smb_buf_length += count; | |
1362 | ||
1363 | pSMB->ByteCount = cpu_to_le16(count); | |
1364 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1365 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1366 | (struct smb_hdr *) pSMBr, &bytes_returned, 1); | |
a4544347 | 1367 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 LT |
1368 | if (rc) { |
1369 | cFYI(1, ("Error in Open = %d", rc)); | |
1370 | } else { | |
09d1db5c | 1371 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1372 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1373 | /* Let caller know file was created so we can set the mode. */ | |
1374 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1375 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1376 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1377 | if (pfile_info) { |
50c2f753 | 1378 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1da177e4 LT |
1379 | 36 /* CreationTime to Attributes */); |
1380 | /* the file_info buf is endian converted by caller */ | |
1381 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1382 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1383 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1384 | } | |
1da177e4 | 1385 | } |
a5a2b489 | 1386 | |
1da177e4 LT |
1387 | cifs_buf_release(pSMB); |
1388 | if (rc == -EAGAIN) | |
1389 | goto openRetry; | |
1390 | return rc; | |
1391 | } | |
1392 | ||
1da177e4 | 1393 | int |
50c2f753 SF |
1394 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1395 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1396 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1397 | { |
1398 | int rc = -EACCES; | |
1399 | READ_REQ *pSMB = NULL; | |
1400 | READ_RSP *pSMBr = NULL; | |
1401 | char *pReadData = NULL; | |
bfa0d75a | 1402 | int wct; |
ec637e3f SF |
1403 | int resp_buf_type = 0; |
1404 | struct kvec iov[1]; | |
1da177e4 | 1405 | |
790fe579 SF |
1406 | cFYI(1, ("Reading %d bytes on fid %d", count, netfid)); |
1407 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
bfa0d75a SF |
1408 | wct = 12; |
1409 | else | |
1410 | wct = 10; /* old style read */ | |
1da177e4 LT |
1411 | |
1412 | *nbytes = 0; | |
ec637e3f | 1413 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1414 | if (rc) |
1415 | return rc; | |
1416 | ||
1417 | /* tcon and ses pointer are checked in smb_init */ | |
1418 | if (tcon->ses->server == NULL) | |
1419 | return -ECONNABORTED; | |
1420 | ||
ec637e3f | 1421 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1422 | pSMB->Fid = netfid; |
1423 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1424 | if (wct == 12) |
bfa0d75a | 1425 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
790fe579 | 1426 | else if ((lseek >> 32) > 0) /* can not handle this big offset for old */ |
ec637e3f | 1427 | return -EIO; |
bfa0d75a | 1428 | |
1da177e4 LT |
1429 | pSMB->Remaining = 0; |
1430 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1431 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1432 | if (wct == 12) |
bfa0d75a SF |
1433 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1434 | else { | |
1435 | /* old style read */ | |
50c2f753 | 1436 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1437 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1438 | pSMBW->ByteCount = 0; |
bfa0d75a | 1439 | } |
ec637e3f SF |
1440 | |
1441 | iov[0].iov_base = (char *)pSMB; | |
1442 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
50c2f753 | 1443 | rc = SendReceive2(xid, tcon->ses, iov, |
ec637e3f | 1444 | 1 /* num iovecs */, |
50c2f753 | 1445 | &resp_buf_type, 0); |
a4544347 | 1446 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1447 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 LT |
1448 | if (rc) { |
1449 | cERROR(1, ("Send error in read = %d", rc)); | |
1450 | } else { | |
1451 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1452 | data_length = data_length << 16; | |
1453 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1454 | *nbytes = data_length; | |
1455 | ||
1456 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1457 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1458 | || (data_length > count)) { |
50c2f753 SF |
1459 | cFYI(1, ("bad length %d for count %d", |
1460 | data_length, count)); | |
1da177e4 LT |
1461 | rc = -EIO; |
1462 | *nbytes = 0; | |
1463 | } else { | |
ec637e3f | 1464 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1465 | le16_to_cpu(pSMBr->DataOffset); |
1466 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
50c2f753 SF |
1467 | cERROR(1,("Faulting on read rc = %d",rc)); |
1468 | rc = -EFAULT; | |
26f57364 | 1469 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1470 | if (*buf) |
50c2f753 | 1471 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1472 | } |
1473 | } | |
1da177e4 | 1474 | |
4b8f930f | 1475 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1476 | if (*buf) { |
1477 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1478 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1479 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1480 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1481 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1482 | /* return buffer to caller to free */ |
1483 | *buf = iov[0].iov_base; | |
790fe579 | 1484 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1485 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1486 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1487 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1488 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1489 | |
1490 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1491 | since file handle passed in no longer valid */ |
1492 | return rc; | |
1493 | } | |
1494 | ||
ec637e3f | 1495 | |
1da177e4 LT |
1496 | int |
1497 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1498 | const int netfid, const unsigned int count, | |
1499 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1500 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1501 | { |
1502 | int rc = -EACCES; | |
1503 | WRITE_REQ *pSMB = NULL; | |
1504 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1505 | int bytes_returned, wct; |
1da177e4 LT |
1506 | __u32 bytes_sent; |
1507 | __u16 byte_count; | |
1508 | ||
1509 | /* cFYI(1,("write at %lld %d bytes",offset,count));*/ | |
790fe579 | 1510 | if (tcon->ses == NULL) |
1c955187 SF |
1511 | return -ECONNABORTED; |
1512 | ||
790fe579 | 1513 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 SF |
1514 | wct = 14; |
1515 | else | |
1516 | wct = 12; | |
1517 | ||
1518 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1519 | (void **) &pSMBr); |
1520 | if (rc) | |
1521 | return rc; | |
1522 | /* tcon and ses pointer are checked in smb_init */ | |
1523 | if (tcon->ses->server == NULL) | |
1524 | return -ECONNABORTED; | |
1525 | ||
1526 | pSMB->AndXCommand = 0xFF; /* none */ | |
1527 | pSMB->Fid = netfid; | |
1528 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1529 | if (wct == 14) |
1c955187 | 1530 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
790fe579 | 1531 | else if ((offset >> 32) > 0) /* can not handle big offset for old srv */ |
1c955187 | 1532 | return -EIO; |
50c2f753 | 1533 | |
1da177e4 LT |
1534 | pSMB->Reserved = 0xFFFFFFFF; |
1535 | pSMB->WriteMode = 0; | |
1536 | pSMB->Remaining = 0; | |
1537 | ||
50c2f753 | 1538 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1539 | can send more if LARGE_WRITE_X capability returned by the server and if |
1540 | our buffer is big enough or if we convert to iovecs on socket writes | |
1541 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1542 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1543 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1544 | } else { | |
1545 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1546 | & ~0xFF; | |
1547 | } | |
1548 | ||
1549 | if (bytes_sent > count) | |
1550 | bytes_sent = count; | |
1551 | pSMB->DataOffset = | |
50c2f753 | 1552 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1553 | if (buf) |
50c2f753 | 1554 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1555 | else if (ubuf) { |
1556 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1557 | cifs_buf_release(pSMB); |
1558 | return -EFAULT; | |
1559 | } | |
e30dcf3a | 1560 | } else if (count != 0) { |
1da177e4 LT |
1561 | /* No buffer */ |
1562 | cifs_buf_release(pSMB); | |
1563 | return -EINVAL; | |
e30dcf3a | 1564 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1565 | if (wct == 14) |
e30dcf3a SF |
1566 | byte_count = bytes_sent + 1; /* pad */ |
1567 | else /* wct == 12 */ { | |
1568 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ | |
1da177e4 | 1569 | } |
1da177e4 LT |
1570 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1571 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1572 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1573 | |
790fe579 | 1574 | if (wct == 14) |
1c955187 | 1575 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1576 | else { /* old style write has byte count 4 bytes earlier |
1577 | so 4 bytes pad */ | |
1578 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1579 | (struct smb_com_writex_req *)pSMB; |
1580 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1581 | } | |
1da177e4 LT |
1582 | |
1583 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1584 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1585 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 LT |
1586 | if (rc) { |
1587 | cFYI(1, ("Send error in write = %d", rc)); | |
1588 | *nbytes = 0; | |
1589 | } else { | |
1590 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1591 | *nbytes = (*nbytes) << 16; | |
1592 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1593 | } | |
1594 | ||
1595 | cifs_buf_release(pSMB); | |
1596 | ||
50c2f753 | 1597 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1598 | since file handle passed in no longer valid */ |
1599 | ||
1600 | return rc; | |
1601 | } | |
1602 | ||
d6e04ae6 SF |
1603 | int |
1604 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1605 | const int netfid, const unsigned int count, |
3e84469d SF |
1606 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1607 | int n_vec, const int long_op) | |
1da177e4 LT |
1608 | { |
1609 | int rc = -EACCES; | |
1610 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1611 | int wct; |
d6e04ae6 | 1612 | int smb_hdr_len; |
ec637e3f | 1613 | int resp_buf_type = 0; |
1da177e4 | 1614 | |
790fe579 | 1615 | cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count)); |
ff7feac9 | 1616 | |
790fe579 | 1617 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
8cc64c6e SF |
1618 | wct = 14; |
1619 | else | |
1620 | wct = 12; | |
1621 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); | |
1da177e4 LT |
1622 | if (rc) |
1623 | return rc; | |
1da177e4 LT |
1624 | /* tcon and ses pointer are checked in smb_init */ |
1625 | if (tcon->ses->server == NULL) | |
1626 | return -ECONNABORTED; | |
1627 | ||
d6e04ae6 | 1628 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1629 | pSMB->Fid = netfid; |
1630 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1631 | if (wct == 14) |
8cc64c6e | 1632 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
790fe579 | 1633 | else if ((offset >> 32) > 0) /* can not handle big offset for old srv */ |
8cc64c6e | 1634 | return -EIO; |
1da177e4 LT |
1635 | pSMB->Reserved = 0xFFFFFFFF; |
1636 | pSMB->WriteMode = 0; | |
1637 | pSMB->Remaining = 0; | |
d6e04ae6 | 1638 | |
1da177e4 | 1639 | pSMB->DataOffset = |
50c2f753 | 1640 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1641 | |
3e84469d SF |
1642 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1643 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1644 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1645 | if (wct == 14) |
8cc64c6e SF |
1646 | pSMB->hdr.smb_buf_length += count+1; |
1647 | else /* wct == 12 */ | |
790fe579 SF |
1648 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1649 | if (wct == 14) | |
8cc64c6e SF |
1650 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1651 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1652 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1653 | (struct smb_com_writex_req *)pSMB; |
1654 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1655 | } | |
3e84469d | 1656 | iov[0].iov_base = pSMB; |
790fe579 | 1657 | if (wct == 14) |
ec637e3f SF |
1658 | iov[0].iov_len = smb_hdr_len + 4; |
1659 | else /* wct == 12 pad bigger by four bytes */ | |
1660 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1661 | |
1da177e4 | 1662 | |
ec637e3f | 1663 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
3e84469d | 1664 | long_op); |
a4544347 | 1665 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1666 | if (rc) { |
8cc64c6e | 1667 | cFYI(1, ("Send error Write2 = %d", rc)); |
1da177e4 | 1668 | *nbytes = 0; |
790fe579 | 1669 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1670 | /* presumably this can not happen, but best to be safe */ |
1671 | rc = -EIO; | |
1672 | *nbytes = 0; | |
d6e04ae6 | 1673 | } else { |
ec637e3f | 1674 | WRITE_RSP * pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1675 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1676 | *nbytes = (*nbytes) << 16; | |
1677 | *nbytes += le16_to_cpu(pSMBr->Count); | |
50c2f753 | 1678 | } |
1da177e4 | 1679 | |
4b8f930f | 1680 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1681 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1682 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1683 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1684 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1685 | |
50c2f753 | 1686 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1687 | since file handle passed in no longer valid */ |
1688 | ||
1689 | return rc; | |
1690 | } | |
d6e04ae6 SF |
1691 | |
1692 | ||
1da177e4 LT |
1693 | int |
1694 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1695 | const __u16 smb_file_id, const __u64 len, | |
1696 | const __u64 offset, const __u32 numUnlock, | |
1697 | const __u32 numLock, const __u8 lockType, const int waitFlag) | |
1698 | { | |
1699 | int rc = 0; | |
1700 | LOCK_REQ *pSMB = NULL; | |
1701 | LOCK_RSP *pSMBr = NULL; | |
1702 | int bytes_returned; | |
1703 | int timeout = 0; | |
1704 | __u16 count; | |
1705 | ||
50c2f753 | 1706 | cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d", waitFlag, numLock)); |
46810cbf SF |
1707 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1708 | ||
1da177e4 LT |
1709 | if (rc) |
1710 | return rc; | |
1711 | ||
46810cbf SF |
1712 | pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */ |
1713 | ||
790fe579 | 1714 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
1da177e4 LT |
1715 | timeout = -1; /* no response expected */ |
1716 | pSMB->Timeout = 0; | |
1717 | } else if (waitFlag == TRUE) { | |
1718 | timeout = 3; /* blocking operation, no timeout */ | |
1719 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ | |
1720 | } else { | |
1721 | pSMB->Timeout = 0; | |
1722 | } | |
1723 | ||
1724 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1725 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1726 | pSMB->LockType = lockType; | |
1727 | pSMB->AndXCommand = 0xFF; /* none */ | |
1728 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1729 | ||
790fe579 | 1730 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1731 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1732 | /* BB where to store pid high? */ | |
1733 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1734 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1735 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1736 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1737 | count = sizeof(LOCKING_ANDX_RANGE); | |
1738 | } else { | |
1739 | /* oplock break */ | |
1740 | count = 0; | |
1741 | } | |
1742 | pSMB->hdr.smb_buf_length += count; | |
1743 | pSMB->ByteCount = cpu_to_le16(count); | |
1744 | ||
7ee1af76 JA |
1745 | if (waitFlag) { |
1746 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1747 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1748 | } else { | |
1749 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1da177e4 | 1750 | (struct smb_hdr *) pSMBr, &bytes_returned, timeout); |
7ee1af76 | 1751 | } |
a4544347 | 1752 | cifs_stats_inc(&tcon->num_locks); |
1da177e4 LT |
1753 | if (rc) { |
1754 | cFYI(1, ("Send error in Lock = %d", rc)); | |
1755 | } | |
46810cbf | 1756 | cifs_small_buf_release(pSMB); |
1da177e4 | 1757 | |
50c2f753 | 1758 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1759 | since file handle passed in no longer valid */ |
1760 | return rc; | |
1761 | } | |
1762 | ||
08547b03 SF |
1763 | int |
1764 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1765 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1766 | struct file_lock *pLockData, const __u16 lock_type, |
fc94cdb9 | 1767 | const int waitFlag) |
08547b03 SF |
1768 | { |
1769 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1770 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1771 | struct cifs_posix_lock *parm_data; |
1772 | int rc = 0; | |
3a5ff61c | 1773 | int timeout = 0; |
08547b03 SF |
1774 | int bytes_returned = 0; |
1775 | __u16 params, param_offset, offset, byte_count, count; | |
1776 | ||
1777 | cFYI(1, ("Posix Lock")); | |
fc94cdb9 | 1778 | |
790fe579 | 1779 | if (pLockData == NULL) |
fc94cdb9 SF |
1780 | return EINVAL; |
1781 | ||
08547b03 SF |
1782 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1783 | ||
1784 | if (rc) | |
1785 | return rc; | |
1786 | ||
1787 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1788 | ||
50c2f753 | 1789 | params = 6; |
08547b03 SF |
1790 | pSMB->MaxSetupCount = 0; |
1791 | pSMB->Reserved = 0; | |
1792 | pSMB->Flags = 0; | |
08547b03 SF |
1793 | pSMB->Reserved2 = 0; |
1794 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1795 | offset = param_offset + params; | |
1796 | ||
08547b03 SF |
1797 | count = sizeof(struct cifs_posix_lock); |
1798 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1799 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
1800 | pSMB->SetupCount = 1; | |
1801 | pSMB->Reserved3 = 0; | |
790fe579 | 1802 | if (get_flag) |
08547b03 SF |
1803 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1804 | else | |
1805 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1806 | byte_count = 3 /* pad */ + params + count; | |
1807 | pSMB->DataCount = cpu_to_le16(count); | |
1808 | pSMB->ParameterCount = cpu_to_le16(params); | |
1809 | pSMB->TotalDataCount = pSMB->DataCount; | |
1810 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1811 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1812 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1813 | (((char *) &pSMB->hdr.Protocol) + offset); |
1814 | ||
1815 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1816 | if (waitFlag) { |
3a5ff61c | 1817 | timeout = 3; /* blocking operation, no timeout */ |
cec6815a | 1818 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1819 | pSMB->Timeout = cpu_to_le32(-1); |
1820 | } else | |
1821 | pSMB->Timeout = 0; | |
1822 | ||
08547b03 | 1823 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1824 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1825 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1826 | |
1827 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1828 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1829 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1830 | pSMB->Reserved4 = 0; | |
1831 | pSMB->hdr.smb_buf_length += byte_count; | |
1832 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1833 | if (waitFlag) { |
1834 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1835 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1836 | } else { | |
1837 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3a5ff61c | 1838 | (struct smb_hdr *) pSMBr, &bytes_returned, timeout); |
7ee1af76 JA |
1839 | } |
1840 | ||
08547b03 SF |
1841 | if (rc) { |
1842 | cFYI(1, ("Send error in Posix Lock = %d", rc)); | |
fc94cdb9 SF |
1843 | } else if (get_flag) { |
1844 | /* lock structure can be returned on get */ | |
1845 | __u16 data_offset; | |
1846 | __u16 data_count; | |
1847 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1848 | ||
1849 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1850 | rc = -EIO; /* bad smb */ | |
1851 | goto plk_err_exit; | |
1852 | } | |
790fe579 | 1853 | if (pLockData == NULL) { |
fc94cdb9 SF |
1854 | rc = -EINVAL; |
1855 | goto plk_err_exit; | |
1856 | } | |
1857 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1858 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1859 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1860 | rc = -EIO; |
1861 | goto plk_err_exit; | |
1862 | } | |
1863 | parm_data = (struct cifs_posix_lock *) | |
1864 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
790fe579 | 1865 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1866 | pLockData->fl_type = F_UNLCK; |
08547b03 | 1867 | } |
50c2f753 | 1868 | |
fc94cdb9 | 1869 | plk_err_exit: |
08547b03 SF |
1870 | if (pSMB) |
1871 | cifs_small_buf_release(pSMB); | |
1872 | ||
1873 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1874 | since file handle passed in no longer valid */ | |
1875 | ||
1876 | return rc; | |
1877 | } | |
1878 | ||
1879 | ||
1da177e4 LT |
1880 | int |
1881 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1882 | { | |
1883 | int rc = 0; | |
1884 | CLOSE_REQ *pSMB = NULL; | |
1885 | CLOSE_RSP *pSMBr = NULL; | |
1886 | int bytes_returned; | |
1887 | cFYI(1, ("In CIFSSMBClose")); | |
1888 | ||
1889 | /* do not retry on dead session on close */ | |
1890 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1891 | if (rc == -EAGAIN) |
1da177e4 LT |
1892 | return 0; |
1893 | if (rc) | |
1894 | return rc; | |
1895 | ||
1896 | pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ | |
1897 | ||
1898 | pSMB->FileID = (__u16) smb_file_id; | |
b815f1e5 | 1899 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 LT |
1900 | pSMB->ByteCount = 0; |
1901 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1902 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1903 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1904 | if (rc) { |
790fe579 | 1905 | if (rc != -EINTR) { |
1da177e4 LT |
1906 | /* EINTR is expected when user ctl-c to kill app */ |
1907 | cERROR(1, ("Send error in Close = %d", rc)); | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | cifs_small_buf_release(pSMB); | |
1912 | ||
1913 | /* Since session is dead, file will be closed on server already */ | |
790fe579 | 1914 | if (rc == -EAGAIN) |
1da177e4 LT |
1915 | rc = 0; |
1916 | ||
1917 | return rc; | |
1918 | } | |
1919 | ||
1920 | int | |
1921 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1922 | const char *fromName, const char *toName, | |
737b758c | 1923 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1924 | { |
1925 | int rc = 0; | |
1926 | RENAME_REQ *pSMB = NULL; | |
1927 | RENAME_RSP *pSMBr = NULL; | |
1928 | int bytes_returned; | |
1929 | int name_len, name_len2; | |
1930 | __u16 count; | |
1931 | ||
1932 | cFYI(1, ("In CIFSSMBRename")); | |
1933 | renameRetry: | |
1934 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1935 | (void **) &pSMBr); | |
1936 | if (rc) | |
1937 | return rc; | |
1938 | ||
1939 | pSMB->BufferFormat = 0x04; | |
1940 | pSMB->SearchAttributes = | |
1941 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1942 | ATTR_DIRECTORY); | |
1943 | ||
1944 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1945 | name_len = | |
50c2f753 | 1946 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1947 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1948 | name_len++; /* trailing null */ |
1949 | name_len *= 2; | |
1950 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1951 | /* protocol requires ASCII signature byte on Unicode string */ | |
1952 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1953 | name_len2 = | |
b1a45695 | 1954 | cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2], |
737b758c | 1955 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1956 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1957 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 1958 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
1959 | name_len = strnlen(fromName, PATH_MAX); |
1960 | name_len++; /* trailing null */ | |
1961 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1962 | name_len2 = strnlen(toName, PATH_MAX); | |
1963 | name_len2++; /* trailing null */ | |
1964 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1965 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1966 | name_len2++; /* trailing null */ | |
1967 | name_len2++; /* signature byte */ | |
1968 | } | |
1969 | ||
1970 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1971 | pSMB->hdr.smb_buf_length += count; | |
1972 | pSMB->ByteCount = cpu_to_le16(count); | |
1973 | ||
1974 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1975 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1976 | cifs_stats_inc(&tcon->num_renames); |
1da177e4 LT |
1977 | if (rc) { |
1978 | cFYI(1, ("Send error in rename = %d", rc)); | |
50c2f753 | 1979 | } |
1da177e4 | 1980 | |
1da177e4 LT |
1981 | cifs_buf_release(pSMB); |
1982 | ||
1983 | if (rc == -EAGAIN) | |
1984 | goto renameRetry; | |
1985 | ||
1986 | return rc; | |
1987 | } | |
1988 | ||
50c2f753 SF |
1989 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
1990 | int netfid, char *target_name, | |
1991 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
1992 | { |
1993 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1994 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 1995 | struct set_file_rename *rename_info; |
1da177e4 LT |
1996 | char *data_offset; |
1997 | char dummy_string[30]; | |
1998 | int rc = 0; | |
1999 | int bytes_returned = 0; | |
2000 | int len_of_str; | |
2001 | __u16 params, param_offset, offset, count, byte_count; | |
2002 | ||
2003 | cFYI(1, ("Rename to File by handle")); | |
2004 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
2005 | (void **) &pSMBr); | |
2006 | if (rc) | |
2007 | return rc; | |
2008 | ||
2009 | params = 6; | |
2010 | pSMB->MaxSetupCount = 0; | |
2011 | pSMB->Reserved = 0; | |
2012 | pSMB->Flags = 0; | |
2013 | pSMB->Timeout = 0; | |
2014 | pSMB->Reserved2 = 0; | |
2015 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2016 | offset = param_offset + params; | |
2017 | ||
2018 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2019 | rename_info = (struct set_file_rename *) data_offset; | |
2020 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2021 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
2022 | pSMB->SetupCount = 1; | |
2023 | pSMB->Reserved3 = 0; | |
2024 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2025 | byte_count = 3 /* pad */ + params; | |
2026 | pSMB->ParameterCount = cpu_to_le16(params); | |
2027 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2028 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2029 | pSMB->DataOffset = cpu_to_le16(offset); | |
2030 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2031 | rename_info->overwrite = cpu_to_le32(1); | |
2032 | rename_info->root_fid = 0; | |
2033 | /* unicode only call */ | |
790fe579 | 2034 | if (target_name == NULL) { |
50c2f753 SF |
2035 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2036 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2037 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2038 | } else { |
b1a45695 | 2039 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2040 | target_name, PATH_MAX, nls_codepage, |
2041 | remap); | |
1da177e4 LT |
2042 | } |
2043 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
2044 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2; | |
2045 | byte_count += count; | |
2046 | pSMB->DataCount = cpu_to_le16(count); | |
2047 | pSMB->TotalDataCount = pSMB->DataCount; | |
2048 | pSMB->Fid = netfid; | |
2049 | pSMB->InformationLevel = | |
2050 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2051 | pSMB->Reserved4 = 0; | |
2052 | pSMB->hdr.smb_buf_length += byte_count; | |
2053 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2054 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2055 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2056 | cifs_stats_inc(&pTcon->num_t2renames); |
1da177e4 | 2057 | if (rc) { |
790fe579 | 2058 | cFYI(1, ("Send error in Rename (by file handle) = %d", rc)); |
1da177e4 | 2059 | } |
a5a2b489 | 2060 | |
1da177e4 LT |
2061 | cifs_buf_release(pSMB); |
2062 | ||
2063 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2064 | since file handle passed in no longer valid */ | |
2065 | ||
2066 | return rc; | |
2067 | } | |
2068 | ||
2069 | int | |
50c2f753 SF |
2070 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2071 | const __u16 target_tid, const char *toName, const int flags, | |
2072 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2073 | { |
2074 | int rc = 0; | |
2075 | COPY_REQ *pSMB = NULL; | |
2076 | COPY_RSP *pSMBr = NULL; | |
2077 | int bytes_returned; | |
2078 | int name_len, name_len2; | |
2079 | __u16 count; | |
2080 | ||
2081 | cFYI(1, ("In CIFSSMBCopy")); | |
2082 | copyRetry: | |
2083 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2084 | (void **) &pSMBr); | |
2085 | if (rc) | |
2086 | return rc; | |
2087 | ||
2088 | pSMB->BufferFormat = 0x04; | |
2089 | pSMB->Tid2 = target_tid; | |
2090 | ||
2091 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2092 | ||
2093 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2094 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2095 | fromName, PATH_MAX, nls_codepage, |
2096 | remap); | |
1da177e4 LT |
2097 | name_len++; /* trailing null */ |
2098 | name_len *= 2; | |
2099 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2100 | /* protocol requires ASCII signature byte on Unicode string */ | |
2101 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2102 | name_len2 = |
2103 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2104 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2105 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2106 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2107 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2108 | name_len = strnlen(fromName, PATH_MAX); |
2109 | name_len++; /* trailing null */ | |
2110 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2111 | name_len2 = strnlen(toName, PATH_MAX); | |
2112 | name_len2++; /* trailing null */ | |
2113 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2114 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2115 | name_len2++; /* trailing null */ | |
2116 | name_len2++; /* signature byte */ | |
2117 | } | |
2118 | ||
2119 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2120 | pSMB->hdr.smb_buf_length += count; | |
2121 | pSMB->ByteCount = cpu_to_le16(count); | |
2122 | ||
2123 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2124 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2125 | if (rc) { | |
2126 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
2127 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
2128 | } | |
2129 | if (pSMB) | |
2130 | cifs_buf_release(pSMB); | |
2131 | ||
2132 | if (rc == -EAGAIN) | |
2133 | goto copyRetry; | |
2134 | ||
2135 | return rc; | |
2136 | } | |
2137 | ||
2138 | int | |
2139 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2140 | const char *fromName, const char *toName, | |
2141 | const struct nls_table *nls_codepage) | |
2142 | { | |
2143 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2144 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2145 | char *data_offset; | |
2146 | int name_len; | |
2147 | int name_len_target; | |
2148 | int rc = 0; | |
2149 | int bytes_returned = 0; | |
2150 | __u16 params, param_offset, offset, byte_count; | |
2151 | ||
2152 | cFYI(1, ("In Symlink Unix style")); | |
2153 | createSymLinkRetry: | |
2154 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2155 | (void **) &pSMBr); | |
2156 | if (rc) | |
2157 | return rc; | |
2158 | ||
2159 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2160 | name_len = | |
e89dc920 | 2161 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2162 | /* find define for this maxpathcomponent */ |
2163 | , nls_codepage); | |
2164 | name_len++; /* trailing null */ | |
2165 | name_len *= 2; | |
2166 | ||
50c2f753 | 2167 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2168 | name_len = strnlen(fromName, PATH_MAX); |
2169 | name_len++; /* trailing null */ | |
2170 | strncpy(pSMB->FileName, fromName, name_len); | |
2171 | } | |
2172 | params = 6 + name_len; | |
2173 | pSMB->MaxSetupCount = 0; | |
2174 | pSMB->Reserved = 0; | |
2175 | pSMB->Flags = 0; | |
2176 | pSMB->Timeout = 0; | |
2177 | pSMB->Reserved2 = 0; | |
2178 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2179 | InformationLevel) - 4; |
1da177e4 LT |
2180 | offset = param_offset + params; |
2181 | ||
2182 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2183 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2184 | name_len_target = | |
e89dc920 | 2185 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2186 | /* find define for this maxpathcomponent */ |
2187 | , nls_codepage); | |
2188 | name_len_target++; /* trailing null */ | |
2189 | name_len_target *= 2; | |
50c2f753 | 2190 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2191 | name_len_target = strnlen(toName, PATH_MAX); |
2192 | name_len_target++; /* trailing null */ | |
2193 | strncpy(data_offset, toName, name_len_target); | |
2194 | } | |
2195 | ||
2196 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2197 | /* BB find exact max on data count below from sess */ | |
2198 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2199 | pSMB->SetupCount = 1; | |
2200 | pSMB->Reserved3 = 0; | |
2201 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2202 | byte_count = 3 /* pad */ + params + name_len_target; | |
2203 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2204 | pSMB->ParameterCount = cpu_to_le16(params); | |
2205 | pSMB->TotalDataCount = pSMB->DataCount; | |
2206 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2207 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2208 | pSMB->DataOffset = cpu_to_le16(offset); | |
2209 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2210 | pSMB->Reserved4 = 0; | |
2211 | pSMB->hdr.smb_buf_length += byte_count; | |
2212 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2213 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2214 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2215 | cifs_stats_inc(&tcon->num_symlinks); |
1da177e4 | 2216 | if (rc) { |
2d785a50 | 2217 | cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc)); |
1da177e4 LT |
2218 | } |
2219 | ||
2220 | if (pSMB) | |
2221 | cifs_buf_release(pSMB); | |
2222 | ||
2223 | if (rc == -EAGAIN) | |
2224 | goto createSymLinkRetry; | |
2225 | ||
2226 | return rc; | |
2227 | } | |
2228 | ||
2229 | int | |
2230 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2231 | const char *fromName, const char *toName, | |
737b758c | 2232 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2233 | { |
2234 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2235 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2236 | char *data_offset; | |
2237 | int name_len; | |
2238 | int name_len_target; | |
2239 | int rc = 0; | |
2240 | int bytes_returned = 0; | |
2241 | __u16 params, param_offset, offset, byte_count; | |
2242 | ||
2243 | cFYI(1, ("In Create Hard link Unix style")); | |
2244 | createHardLinkRetry: | |
2245 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2246 | (void **) &pSMBr); | |
2247 | if (rc) | |
2248 | return rc; | |
2249 | ||
2250 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2251 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2252 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2253 | name_len++; /* trailing null */ |
2254 | name_len *= 2; | |
2255 | ||
50c2f753 | 2256 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2257 | name_len = strnlen(toName, PATH_MAX); |
2258 | name_len++; /* trailing null */ | |
2259 | strncpy(pSMB->FileName, toName, name_len); | |
2260 | } | |
2261 | params = 6 + name_len; | |
2262 | pSMB->MaxSetupCount = 0; | |
2263 | pSMB->Reserved = 0; | |
2264 | pSMB->Flags = 0; | |
2265 | pSMB->Timeout = 0; | |
2266 | pSMB->Reserved2 = 0; | |
2267 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2268 | InformationLevel) - 4; |
1da177e4 LT |
2269 | offset = param_offset + params; |
2270 | ||
2271 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2272 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2273 | name_len_target = | |
b1a45695 | 2274 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2275 | nls_codepage, remap); |
1da177e4 LT |
2276 | name_len_target++; /* trailing null */ |
2277 | name_len_target *= 2; | |
50c2f753 | 2278 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2279 | name_len_target = strnlen(fromName, PATH_MAX); |
2280 | name_len_target++; /* trailing null */ | |
2281 | strncpy(data_offset, fromName, name_len_target); | |
2282 | } | |
2283 | ||
2284 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2285 | /* BB find exact max on data count below from sess*/ | |
2286 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2287 | pSMB->SetupCount = 1; | |
2288 | pSMB->Reserved3 = 0; | |
2289 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2290 | byte_count = 3 /* pad */ + params + name_len_target; | |
2291 | pSMB->ParameterCount = cpu_to_le16(params); | |
2292 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2293 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2294 | pSMB->TotalDataCount = pSMB->DataCount; | |
2295 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2296 | pSMB->DataOffset = cpu_to_le16(offset); | |
2297 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2298 | pSMB->Reserved4 = 0; | |
2299 | pSMB->hdr.smb_buf_length += byte_count; | |
2300 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2301 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2302 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2303 | cifs_stats_inc(&tcon->num_hardlinks); |
1da177e4 LT |
2304 | if (rc) { |
2305 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); | |
2306 | } | |
2307 | ||
2308 | cifs_buf_release(pSMB); | |
2309 | if (rc == -EAGAIN) | |
2310 | goto createHardLinkRetry; | |
2311 | ||
2312 | return rc; | |
2313 | } | |
2314 | ||
2315 | int | |
2316 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2317 | const char *fromName, const char *toName, | |
737b758c | 2318 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2319 | { |
2320 | int rc = 0; | |
2321 | NT_RENAME_REQ *pSMB = NULL; | |
2322 | RENAME_RSP *pSMBr = NULL; | |
2323 | int bytes_returned; | |
2324 | int name_len, name_len2; | |
2325 | __u16 count; | |
2326 | ||
2327 | cFYI(1, ("In CIFSCreateHardLink")); | |
2328 | winCreateHardLinkRetry: | |
2329 | ||
2330 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2331 | (void **) &pSMBr); | |
2332 | if (rc) | |
2333 | return rc; | |
2334 | ||
2335 | pSMB->SearchAttributes = | |
2336 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2337 | ATTR_DIRECTORY); | |
2338 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2339 | pSMB->ClusterCount = 0; | |
2340 | ||
2341 | pSMB->BufferFormat = 0x04; | |
2342 | ||
2343 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2344 | name_len = | |
b1a45695 | 2345 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2346 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2347 | name_len++; /* trailing null */ |
2348 | name_len *= 2; | |
2349 | pSMB->OldFileName[name_len] = 0; /* pad */ | |
50c2f753 | 2350 | pSMB->OldFileName[name_len + 1] = 0x04; |
1da177e4 | 2351 | name_len2 = |
50c2f753 | 2352 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2353 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2354 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2355 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2356 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2357 | name_len = strnlen(fromName, PATH_MAX); |
2358 | name_len++; /* trailing null */ | |
2359 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2360 | name_len2 = strnlen(toName, PATH_MAX); | |
2361 | name_len2++; /* trailing null */ | |
2362 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2363 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2364 | name_len2++; /* trailing null */ | |
2365 | name_len2++; /* signature byte */ | |
2366 | } | |
2367 | ||
2368 | count = 1 /* string type byte */ + name_len + name_len2; | |
2369 | pSMB->hdr.smb_buf_length += count; | |
2370 | pSMB->ByteCount = cpu_to_le16(count); | |
2371 | ||
2372 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2373 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2374 | cifs_stats_inc(&tcon->num_hardlinks); |
1da177e4 LT |
2375 | if (rc) { |
2376 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); | |
2377 | } | |
2378 | cifs_buf_release(pSMB); | |
2379 | if (rc == -EAGAIN) | |
2380 | goto winCreateHardLinkRetry; | |
2381 | ||
2382 | return rc; | |
2383 | } | |
2384 | ||
2385 | int | |
2386 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
2387 | const unsigned char *searchName, | |
2388 | char *symlinkinfo, const int buflen, | |
2389 | const struct nls_table *nls_codepage) | |
2390 | { | |
2391 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2392 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2393 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2394 | int rc = 0; | |
2395 | int bytes_returned; | |
2396 | int name_len; | |
2397 | __u16 params, byte_count; | |
2398 | ||
2399 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
2400 | ||
2401 | querySymLinkRetry: | |
2402 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2403 | (void **) &pSMBr); | |
2404 | if (rc) | |
2405 | return rc; | |
2406 | ||
2407 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2408 | name_len = | |
50c2f753 SF |
2409 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2410 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2411 | name_len++; /* trailing null */ |
2412 | name_len *= 2; | |
50c2f753 | 2413 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2414 | name_len = strnlen(searchName, PATH_MAX); |
2415 | name_len++; /* trailing null */ | |
2416 | strncpy(pSMB->FileName, searchName, name_len); | |
2417 | } | |
2418 | ||
2419 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2420 | pSMB->TotalDataCount = 0; | |
2421 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2422 | /* BB find exact max data count below from sess structure BB */ | |
2423 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2424 | pSMB->MaxSetupCount = 0; | |
2425 | pSMB->Reserved = 0; | |
2426 | pSMB->Flags = 0; | |
2427 | pSMB->Timeout = 0; | |
2428 | pSMB->Reserved2 = 0; | |
2429 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2430 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2431 | pSMB->DataCount = 0; |
2432 | pSMB->DataOffset = 0; | |
2433 | pSMB->SetupCount = 1; | |
2434 | pSMB->Reserved3 = 0; | |
2435 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2436 | byte_count = params + 1 /* pad */ ; | |
2437 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2438 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2439 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2440 | pSMB->Reserved4 = 0; | |
2441 | pSMB->hdr.smb_buf_length += byte_count; | |
2442 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2443 | ||
2444 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2445 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2446 | if (rc) { | |
2447 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
2448 | } else { | |
2449 | /* decode response */ | |
2450 | ||
2451 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2452 | if (rc || (pSMBr->ByteCount < 2)) | |
2453 | /* BB also check enough total bytes returned */ | |
2454 | rc = -EIO; /* bad smb */ | |
2455 | else { | |
2456 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2457 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2458 | ||
2459 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2460 | name_len = UniStrnlen((wchar_t *) ((char *) | |
50c2f753 SF |
2461 | &pSMBr->hdr.Protocol + data_offset), |
2462 | min_t(const int, buflen, count) / 2); | |
737b758c | 2463 | /* BB FIXME investigate remapping reserved chars here */ |
1da177e4 | 2464 | cifs_strfromUCS_le(symlinkinfo, |
50c2f753 SF |
2465 | (__le16 *) ((char *)&pSMBr->hdr.Protocol |
2466 | + data_offset), | |
1da177e4 LT |
2467 | name_len, nls_codepage); |
2468 | } else { | |
2469 | strncpy(symlinkinfo, | |
50c2f753 | 2470 | (char *) &pSMBr->hdr.Protocol + |
1da177e4 LT |
2471 | data_offset, |
2472 | min_t(const int, buflen, count)); | |
2473 | } | |
2474 | symlinkinfo[buflen] = 0; | |
2475 | /* just in case so calling code does not go off the end of buffer */ | |
2476 | } | |
2477 | } | |
2478 | cifs_buf_release(pSMB); | |
2479 | if (rc == -EAGAIN) | |
2480 | goto querySymLinkRetry; | |
2481 | return rc; | |
2482 | } | |
2483 | ||
0a4b92c0 SF |
2484 | /* Initialize NT TRANSACT SMB into small smb request buffer. |
2485 | This assumes that all NT TRANSACTS that we init here have | |
2486 | total parm and data under about 400 bytes (to fit in small cifs | |
2487 | buffer size), which is the case so far, it easily fits. NB: | |
2488 | Setup words themselves and ByteCount | |
2489 | MaxSetupCount (size of returned setup area) and | |
2490 | MaxParameterCount (returned parms size) must be set by caller */ | |
50c2f753 | 2491 | static int |
0a4b92c0 SF |
2492 | smb_init_ntransact(const __u16 sub_command, const int setup_count, |
2493 | const int parm_len, struct cifsTconInfo *tcon, | |
50c2f753 | 2494 | void **ret_buf) |
0a4b92c0 SF |
2495 | { |
2496 | int rc; | |
2497 | __u32 temp_offset; | |
50c2f753 | 2498 | struct smb_com_ntransact_req *pSMB; |
0a4b92c0 SF |
2499 | |
2500 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2501 | (void **)&pSMB); | |
2502 | if (rc) | |
2503 | return rc; | |
2504 | *ret_buf = (void *)pSMB; | |
2505 | pSMB->Reserved = 0; | |
2506 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2507 | pSMB->TotalDataCount = 0; | |
2508 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2509 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2510 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2511 | pSMB->DataCount = pSMB->TotalDataCount; | |
2512 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2513 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2514 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2515 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2516 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2517 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2518 | return 0; | |
2519 | } | |
2520 | ||
2521 | static int | |
50c2f753 SF |
2522 | validate_ntransact(char *buf, char **ppparm, char **ppdata, |
2523 | int *pdatalen, int *pparmlen) | |
0a4b92c0 | 2524 | { |
50c2f753 | 2525 | char *end_of_smb; |
0a4b92c0 | 2526 | __u32 data_count, data_offset, parm_count, parm_offset; |
50c2f753 | 2527 | struct smb_com_ntransact_rsp *pSMBr; |
0a4b92c0 | 2528 | |
790fe579 | 2529 | if (buf == NULL) |
0a4b92c0 SF |
2530 | return -EINVAL; |
2531 | ||
2532 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2533 | ||
2534 | /* ByteCount was converted from little endian in SendReceive */ | |
50c2f753 | 2535 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + |
0a4b92c0 SF |
2536 | (char *)&pSMBr->ByteCount; |
2537 | ||
0a4b92c0 SF |
2538 | data_offset = le32_to_cpu(pSMBr->DataOffset); |
2539 | data_count = le32_to_cpu(pSMBr->DataCount); | |
50c2f753 | 2540 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
0a4b92c0 SF |
2541 | parm_count = le32_to_cpu(pSMBr->ParameterCount); |
2542 | ||
2543 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2544 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2545 | ||
2546 | /* should we also check that parm and data areas do not overlap? */ | |
790fe579 SF |
2547 | if (*ppparm > end_of_smb) { |
2548 | cFYI(1, ("parms start after end of smb")); | |
0a4b92c0 | 2549 | return -EINVAL; |
790fe579 SF |
2550 | } else if (parm_count + *ppparm > end_of_smb) { |
2551 | cFYI(1, ("parm end after end of smb")); | |
0a4b92c0 | 2552 | return -EINVAL; |
790fe579 SF |
2553 | } else if (*ppdata > end_of_smb) { |
2554 | cFYI(1, ("data starts after end of smb")); | |
0a4b92c0 | 2555 | return -EINVAL; |
790fe579 | 2556 | } else if (data_count + *ppdata > end_of_smb) { |
26f57364 | 2557 | cFYI(1, ("data %p + count %d (%p) ends after end of smb %p start %p", |
50c2f753 SF |
2558 | *ppdata, data_count, (data_count + *ppdata), |
2559 | end_of_smb, pSMBr)); | |
0a4b92c0 | 2560 | return -EINVAL; |
790fe579 SF |
2561 | } else if (parm_count + data_count > pSMBr->ByteCount) { |
2562 | cFYI(1, ("parm count and data count larger than SMB")); | |
0a4b92c0 SF |
2563 | return -EINVAL; |
2564 | } | |
2565 | return 0; | |
2566 | } | |
2567 | ||
1da177e4 LT |
2568 | int |
2569 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2570 | const unsigned char *searchName, | |
50c2f753 | 2571 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2572 | const struct nls_table *nls_codepage) |
2573 | { | |
2574 | int rc = 0; | |
2575 | int bytes_returned; | |
2576 | int name_len; | |
50c2f753 SF |
2577 | struct smb_com_transaction_ioctl_req *pSMB; |
2578 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 LT |
2579 | |
2580 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
2581 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2582 | (void **) &pSMBr); | |
2583 | if (rc) | |
2584 | return rc; | |
2585 | ||
2586 | pSMB->TotalParameterCount = 0 ; | |
2587 | pSMB->TotalDataCount = 0; | |
2588 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2589 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2590 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2591 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2592 | pSMB->MaxSetupCount = 4; |
2593 | pSMB->Reserved = 0; | |
2594 | pSMB->ParameterOffset = 0; | |
2595 | pSMB->DataCount = 0; | |
2596 | pSMB->DataOffset = 0; | |
2597 | pSMB->SetupCount = 4; | |
2598 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2599 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2600 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2601 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2602 | pSMB->IsRootFlag = 0; | |
2603 | pSMB->Fid = fid; /* file handle always le */ | |
2604 | pSMB->ByteCount = 0; | |
2605 | ||
2606 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2607 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2608 | if (rc) { | |
2609 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
2610 | } else { /* decode response */ | |
2611 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2612 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
2613 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) | |
2614 | /* BB also check enough total bytes returned */ | |
2615 | rc = -EIO; /* bad smb */ | |
2616 | else { | |
790fe579 | 2617 | if (data_count && (data_count < 2048)) { |
50c2f753 | 2618 | char *end_of_smb = 2 /* sizeof byte count */ + |
0a4b92c0 SF |
2619 | pSMBr->ByteCount + |
2620 | (char *)&pSMBr->ByteCount; | |
1da177e4 | 2621 | |
50c2f753 SF |
2622 | struct reparse_data *reparse_buf = |
2623 | (struct reparse_data *) | |
2624 | ((char *)&pSMBr->hdr.Protocol | |
2625 | + data_offset); | |
790fe579 | 2626 | if ((char *)reparse_buf >= end_of_smb) { |
1da177e4 LT |
2627 | rc = -EIO; |
2628 | goto qreparse_out; | |
2629 | } | |
790fe579 | 2630 | if ((reparse_buf->LinkNamesBuf + |
1da177e4 LT |
2631 | reparse_buf->TargetNameOffset + |
2632 | reparse_buf->TargetNameLen) > | |
2633 | end_of_smb) { | |
26f57364 | 2634 | cFYI(1, ("reparse buf beyond SMB")); |
1da177e4 LT |
2635 | rc = -EIO; |
2636 | goto qreparse_out; | |
2637 | } | |
50c2f753 | 2638 | |
1da177e4 LT |
2639 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2640 | name_len = UniStrnlen((wchar_t *) | |
50c2f753 SF |
2641 | (reparse_buf->LinkNamesBuf + |
2642 | reparse_buf->TargetNameOffset), | |
2643 | min(buflen/2, | |
2644 | reparse_buf->TargetNameLen / 2)); | |
1da177e4 | 2645 | cifs_strfromUCS_le(symlinkinfo, |
50c2f753 | 2646 | (__le16 *) (reparse_buf->LinkNamesBuf + |
1da177e4 LT |
2647 | reparse_buf->TargetNameOffset), |
2648 | name_len, nls_codepage); | |
2649 | } else { /* ASCII names */ | |
50c2f753 SF |
2650 | strncpy(symlinkinfo, |
2651 | reparse_buf->LinkNamesBuf + | |
2652 | reparse_buf->TargetNameOffset, | |
2653 | min_t(const int, buflen, | |
2654 | reparse_buf->TargetNameLen)); | |
1da177e4 LT |
2655 | } |
2656 | } else { | |
2657 | rc = -EIO; | |
63135e08 SF |
2658 | cFYI(1, ("Invalid return data count on " |
2659 | "get reparse info ioctl")); | |
1da177e4 LT |
2660 | } |
2661 | symlinkinfo[buflen] = 0; /* just in case so the caller | |
2662 | does not go off the end of the buffer */ | |
50c2f753 | 2663 | cFYI(1, ("readlink result - %s", symlinkinfo)); |
1da177e4 LT |
2664 | } |
2665 | } | |
2666 | qreparse_out: | |
4a6d87f1 | 2667 | cifs_buf_release(pSMB); |
1da177e4 LT |
2668 | |
2669 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2670 | since file handle passed in no longer valid */ | |
2671 | ||
2672 | return rc; | |
2673 | } | |
2674 | ||
2675 | #ifdef CONFIG_CIFS_POSIX | |
2676 | ||
2677 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2678 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2679 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2680 | { |
2681 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2682 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2683 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2684 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
1da177e4 LT |
2685 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ |
2686 | ||
2687 | return; | |
2688 | } | |
2689 | ||
2690 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2691 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2692 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2693 | { |
2694 | int size = 0; | |
2695 | int i; | |
2696 | __u16 count; | |
50c2f753 SF |
2697 | struct cifs_posix_ace *pACE; |
2698 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2699 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2700 | |
2701 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2702 | return -EOPNOTSUPP; | |
2703 | ||
790fe579 | 2704 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2705 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2706 | pACE = &cifs_acl->ace_array[0]; | |
2707 | size = sizeof(struct cifs_posix_acl); | |
2708 | size += sizeof(struct cifs_posix_ace) * count; | |
2709 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2710 | if (size_of_data_area < size) { |
50c2f753 SF |
2711 | cFYI(1, ("bad CIFS POSIX ACL size %d vs. %d", |
2712 | size_of_data_area, size)); | |
1da177e4 LT |
2713 | return -EINVAL; |
2714 | } | |
790fe579 | 2715 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2716 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2717 | size = sizeof(struct cifs_posix_acl); | |
2718 | size += sizeof(struct cifs_posix_ace) * count; | |
2719 | /* skip past access ACEs to get to default ACEs */ | |
2720 | pACE = &cifs_acl->ace_array[count]; | |
2721 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2722 | size += sizeof(struct cifs_posix_ace) * count; | |
2723 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2724 | if (size_of_data_area < size) |
1da177e4 LT |
2725 | return -EINVAL; |
2726 | } else { | |
2727 | /* illegal type */ | |
2728 | return -EINVAL; | |
2729 | } | |
2730 | ||
2731 | size = posix_acl_xattr_size(count); | |
790fe579 | 2732 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2733 | /* used to query ACL EA size */ |
790fe579 | 2734 | } else if (size > buflen) { |
1da177e4 LT |
2735 | return -ERANGE; |
2736 | } else /* buffer big enough */ { | |
ff7feac9 | 2737 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2738 | for (i = 0; i < count ; i++) { |
2739 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2740 | pACE++; | |
1da177e4 LT |
2741 | } |
2742 | } | |
2743 | return size; | |
2744 | } | |
2745 | ||
50c2f753 SF |
2746 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2747 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2748 | { |
2749 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2750 | ||
ff7feac9 SF |
2751 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2752 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2753 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2754 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2755 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2756 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2757 | } else |
ff7feac9 | 2758 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
50c2f753 | 2759 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ |
1da177e4 LT |
2760 | return rc; |
2761 | } | |
2762 | ||
2763 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2764 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2765 | const int buflen, const int acl_type) | |
1da177e4 LT |
2766 | { |
2767 | __u16 rc = 0; | |
50c2f753 SF |
2768 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2769 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2770 | int count; |
2771 | int i; | |
2772 | ||
790fe579 | 2773 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2774 | return 0; |
2775 | ||
2776 | count = posix_acl_xattr_count((size_t)buflen); | |
c18c842b | 2777 | cFYI(1, ("setting acl with %d entries from buf of length %d and " |
63135e08 | 2778 | "version of %d", |
ff7feac9 | 2779 | count, buflen, le32_to_cpu(local_acl->a_version))); |
790fe579 | 2780 | if (le32_to_cpu(local_acl->a_version) != 2) { |
50c2f753 | 2781 | cFYI(1, ("unknown POSIX ACL version %d", |
ff7feac9 | 2782 | le32_to_cpu(local_acl->a_version))); |
1da177e4 LT |
2783 | return 0; |
2784 | } | |
2785 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2786 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2787 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2788 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2789 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2790 | else { |
50c2f753 | 2791 | cFYI(1, ("unknown ACL type %d", acl_type)); |
1da177e4 LT |
2792 | return 0; |
2793 | } | |
50c2f753 | 2794 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2795 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2796 | &local_acl->a_entries[i]); | |
790fe579 | 2797 | if (rc != 0) { |
1da177e4 LT |
2798 | /* ACE not converted */ |
2799 | break; | |
2800 | } | |
2801 | } | |
790fe579 | 2802 | if (rc == 0) { |
1da177e4 LT |
2803 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2804 | rc += sizeof(struct cifs_posix_acl); | |
2805 | /* BB add check to make sure ACL does not overflow SMB */ | |
2806 | } | |
2807 | return rc; | |
2808 | } | |
2809 | ||
2810 | int | |
2811 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2812 | const unsigned char *searchName, |
2813 | char *acl_inf, const int buflen, const int acl_type, | |
2814 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2815 | { |
2816 | /* SMB_QUERY_POSIX_ACL */ | |
2817 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2818 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2819 | int rc = 0; | |
2820 | int bytes_returned; | |
2821 | int name_len; | |
2822 | __u16 params, byte_count; | |
50c2f753 | 2823 | |
1da177e4 LT |
2824 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); |
2825 | ||
2826 | queryAclRetry: | |
2827 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2828 | (void **) &pSMBr); | |
2829 | if (rc) | |
2830 | return rc; | |
50c2f753 | 2831 | |
1da177e4 LT |
2832 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2833 | name_len = | |
50c2f753 | 2834 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2835 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2836 | name_len++; /* trailing null */ |
2837 | name_len *= 2; | |
2838 | pSMB->FileName[name_len] = 0; | |
2839 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2840 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2841 | name_len = strnlen(searchName, PATH_MAX); |
2842 | name_len++; /* trailing null */ | |
2843 | strncpy(pSMB->FileName, searchName, name_len); | |
2844 | } | |
2845 | ||
2846 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2847 | pSMB->TotalDataCount = 0; | |
2848 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2849 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2850 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2851 | pSMB->MaxSetupCount = 0; | |
2852 | pSMB->Reserved = 0; | |
2853 | pSMB->Flags = 0; | |
2854 | pSMB->Timeout = 0; | |
2855 | pSMB->Reserved2 = 0; | |
2856 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2857 | offsetof(struct smb_com_transaction2_qpi_req, |
2858 | InformationLevel) - 4); | |
1da177e4 LT |
2859 | pSMB->DataCount = 0; |
2860 | pSMB->DataOffset = 0; | |
2861 | pSMB->SetupCount = 1; | |
2862 | pSMB->Reserved3 = 0; | |
2863 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2864 | byte_count = params + 1 /* pad */ ; | |
2865 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2866 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2867 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2868 | pSMB->Reserved4 = 0; | |
2869 | pSMB->hdr.smb_buf_length += byte_count; | |
2870 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2871 | ||
2872 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2873 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2874 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 LT |
2875 | if (rc) { |
2876 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
2877 | } else { | |
2878 | /* decode response */ | |
50c2f753 | 2879 | |
1da177e4 LT |
2880 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2881 | if (rc || (pSMBr->ByteCount < 2)) | |
2882 | /* BB also check enough total bytes returned */ | |
2883 | rc = -EIO; /* bad smb */ | |
2884 | else { | |
2885 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2886 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2887 | rc = cifs_copy_posix_acl(acl_inf, | |
2888 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2889 | buflen, acl_type, count); |
1da177e4 LT |
2890 | } |
2891 | } | |
2892 | cifs_buf_release(pSMB); | |
2893 | if (rc == -EAGAIN) | |
2894 | goto queryAclRetry; | |
2895 | return rc; | |
2896 | } | |
2897 | ||
2898 | int | |
2899 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2900 | const unsigned char *fileName, |
2901 | const char *local_acl, const int buflen, | |
2902 | const int acl_type, | |
2903 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2904 | { |
2905 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2906 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2907 | char *parm_data; | |
2908 | int name_len; | |
2909 | int rc = 0; | |
2910 | int bytes_returned = 0; | |
2911 | __u16 params, byte_count, data_count, param_offset, offset; | |
2912 | ||
2913 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2914 | setAclRetry: | |
2915 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2916 | (void **) &pSMBr); |
1da177e4 LT |
2917 | if (rc) |
2918 | return rc; | |
2919 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2920 | name_len = | |
50c2f753 | 2921 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2922 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2923 | name_len++; /* trailing null */ |
2924 | name_len *= 2; | |
50c2f753 | 2925 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2926 | name_len = strnlen(fileName, PATH_MAX); |
2927 | name_len++; /* trailing null */ | |
2928 | strncpy(pSMB->FileName, fileName, name_len); | |
2929 | } | |
2930 | params = 6 + name_len; | |
2931 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2932 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
2933 | pSMB->MaxSetupCount = 0; | |
2934 | pSMB->Reserved = 0; | |
2935 | pSMB->Flags = 0; | |
2936 | pSMB->Timeout = 0; | |
2937 | pSMB->Reserved2 = 0; | |
2938 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2939 | InformationLevel) - 4; |
1da177e4 LT |
2940 | offset = param_offset + params; |
2941 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2942 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2943 | ||
2944 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2945 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2946 | |
790fe579 | 2947 | if (data_count == 0) { |
1da177e4 LT |
2948 | rc = -EOPNOTSUPP; |
2949 | goto setACLerrorExit; | |
2950 | } | |
2951 | pSMB->DataOffset = cpu_to_le16(offset); | |
2952 | pSMB->SetupCount = 1; | |
2953 | pSMB->Reserved3 = 0; | |
2954 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2955 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2956 | byte_count = 3 /* pad */ + params + data_count; | |
2957 | pSMB->DataCount = cpu_to_le16(data_count); | |
2958 | pSMB->TotalDataCount = pSMB->DataCount; | |
2959 | pSMB->ParameterCount = cpu_to_le16(params); | |
2960 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2961 | pSMB->Reserved4 = 0; | |
2962 | pSMB->hdr.smb_buf_length += byte_count; | |
2963 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2964 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2965 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
1da177e4 LT |
2966 | if (rc) { |
2967 | cFYI(1, ("Set POSIX ACL returned %d", rc)); | |
2968 | } | |
2969 | ||
2970 | setACLerrorExit: | |
2971 | cifs_buf_release(pSMB); | |
2972 | if (rc == -EAGAIN) | |
2973 | goto setAclRetry; | |
2974 | return rc; | |
2975 | } | |
2976 | ||
f654bac2 SF |
2977 | /* BB fix tabs in this function FIXME BB */ |
2978 | int | |
2979 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 2980 | const int netfid, __u64 * pExtAttrBits, __u64 *pMask) |
f654bac2 | 2981 | { |
50c2f753 SF |
2982 | int rc = 0; |
2983 | struct smb_t2_qfi_req *pSMB = NULL; | |
2984 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2985 | int bytes_returned; | |
2986 | __u16 params, byte_count; | |
f654bac2 | 2987 | |
790fe579 SF |
2988 | cFYI(1, ("In GetExtAttr")); |
2989 | if (tcon == NULL) | |
2990 | return -ENODEV; | |
f654bac2 SF |
2991 | |
2992 | GetExtAttrRetry: | |
790fe579 SF |
2993 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2994 | (void **) &pSMBr); | |
2995 | if (rc) | |
2996 | return rc; | |
f654bac2 | 2997 | |
790fe579 SF |
2998 | params = 2 /* level */ +2 /* fid */; |
2999 | pSMB->t2.TotalDataCount = 0; | |
3000 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3001 | /* BB find exact max data count below from sess structure BB */ | |
3002 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3003 | pSMB->t2.MaxSetupCount = 0; | |
3004 | pSMB->t2.Reserved = 0; | |
3005 | pSMB->t2.Flags = 0; | |
3006 | pSMB->t2.Timeout = 0; | |
3007 | pSMB->t2.Reserved2 = 0; | |
3008 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3009 | Fid) - 4); | |
3010 | pSMB->t2.DataCount = 0; | |
3011 | pSMB->t2.DataOffset = 0; | |
3012 | pSMB->t2.SetupCount = 1; | |
3013 | pSMB->t2.Reserved3 = 0; | |
3014 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3015 | byte_count = params + 1 /* pad */ ; | |
3016 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3017 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3018 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3019 | pSMB->Pad = 0; | |
f654bac2 | 3020 | pSMB->Fid = netfid; |
790fe579 SF |
3021 | pSMB->hdr.smb_buf_length += byte_count; |
3022 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
3023 | ||
3024 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3025 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3026 | if (rc) { | |
3027 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
3028 | } else { | |
3029 | /* decode response */ | |
3030 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3031 | if (rc || (pSMBr->ByteCount < 2)) | |
3032 | /* BB also check enough total bytes returned */ | |
3033 | /* If rc should we check for EOPNOSUPP and | |
3034 | disable the srvino flag? or in caller? */ | |
3035 | rc = -EIO; /* bad smb */ | |
3036 | else { | |
3037 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3038 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3039 | struct file_chattr_info *pfinfo; | |
3040 | /* BB Do we need a cast or hash here ? */ | |
3041 | if (count != 16) { | |
3042 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
3043 | rc = -EIO; | |
3044 | goto GetExtAttrOut; | |
3045 | } | |
3046 | pfinfo = (struct file_chattr_info *) | |
3047 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3048 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3049 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3050 | } |
3051 | } | |
f654bac2 | 3052 | GetExtAttrOut: |
790fe579 SF |
3053 | cifs_buf_release(pSMB); |
3054 | if (rc == -EAGAIN) | |
3055 | goto GetExtAttrRetry; | |
3056 | return rc; | |
f654bac2 SF |
3057 | } |
3058 | ||
f654bac2 | 3059 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3060 | |
297647c2 | 3061 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
3062 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3063 | int | |
3064 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
50c2f753 | 3065 | /* BB fix up return info */ char *acl_inf, const int buflen, |
442aa310 | 3066 | const int acl_type) |
0a4b92c0 SF |
3067 | { |
3068 | int rc = 0; | |
3069 | int buf_type = 0; | |
3070 | QUERY_SEC_DESC_REQ * pSMB; | |
3071 | struct kvec iov[1]; | |
3072 | ||
3073 | cFYI(1, ("GetCifsACL")); | |
3074 | ||
50c2f753 | 3075 | rc = smb_init_ntransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3076 | 8 /* parm len */, tcon, (void **) &pSMB); |
3077 | if (rc) | |
3078 | return rc; | |
3079 | ||
3080 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3081 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3082 | pSMB->MaxSetupCount = 0; | |
3083 | pSMB->Fid = fid; /* file handle always le */ | |
3084 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3085 | CIFS_ACL_DACL); | |
3086 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3087 | pSMB->hdr.smb_buf_length += 11; | |
3088 | iov[0].iov_base = (char *)pSMB; | |
3089 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3090 | ||
3091 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, 0); | |
3092 | cifs_stats_inc(&tcon->num_acl_get); | |
3093 | if (rc) { | |
3094 | cFYI(1, ("Send error in QuerySecDesc = %d", rc)); | |
3095 | } else { /* decode response */ | |
442aa310 | 3096 | struct cifs_ntsd *psec_desc; |
0a4b92c0 SF |
3097 | __le32 * parm; |
3098 | int parm_len; | |
3099 | int data_len; | |
3100 | int acl_len; | |
50c2f753 | 3101 | struct smb_com_ntransact_rsp *pSMBr; |
0a4b92c0 SF |
3102 | |
3103 | /* validate_nttransact */ | |
50c2f753 | 3104 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
0a4b92c0 SF |
3105 | (char **)&psec_desc, |
3106 | &parm_len, &data_len); | |
790fe579 | 3107 | if (rc) |
0a4b92c0 SF |
3108 | goto qsec_out; |
3109 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3110 | ||
a013689d | 3111 | cFYI(1, ("smb %p parm %p data %p", pSMBr, parm, psec_desc)); |
0a4b92c0 SF |
3112 | |
3113 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3114 | rc = -EIO; /* bad smb */ | |
3115 | goto qsec_out; | |
3116 | } | |
3117 | ||
3118 | /* BB check that data area is minimum length and as big as acl_len */ | |
3119 | ||
3120 | acl_len = le32_to_cpu(*(__le32 *)parm); | |
790fe579 | 3121 | /* BB check if (acl_len > bufsize) */ |
0a4b92c0 SF |
3122 | |
3123 | parse_sec_desc(psec_desc, acl_len); | |
3124 | } | |
3125 | qsec_out: | |
790fe579 | 3126 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3127 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3128 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3129 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3130 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3131 | return rc; |
3132 | } | |
297647c2 | 3133 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
0a4b92c0 | 3134 | |
6b8edfe0 SF |
3135 | /* Legacy Query Path Information call for lookup to old servers such |
3136 | as Win9x/WinME */ | |
3137 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3138 | const unsigned char *searchName, |
3139 | FILE_ALL_INFO *pFinfo, | |
3140 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 SF |
3141 | { |
3142 | QUERY_INFORMATION_REQ * pSMB; | |
3143 | QUERY_INFORMATION_RSP * pSMBr; | |
3144 | int rc = 0; | |
3145 | int bytes_returned; | |
3146 | int name_len; | |
3147 | ||
50c2f753 | 3148 | cFYI(1, ("In SMBQPath path %s", searchName)); |
6b8edfe0 SF |
3149 | QInfRetry: |
3150 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3151 | (void **) &pSMBr); |
6b8edfe0 SF |
3152 | if (rc) |
3153 | return rc; | |
3154 | ||
3155 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3156 | name_len = | |
50c2f753 SF |
3157 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3158 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3159 | name_len++; /* trailing null */ |
3160 | name_len *= 2; | |
50c2f753 | 3161 | } else { |
6b8edfe0 SF |
3162 | name_len = strnlen(searchName, PATH_MAX); |
3163 | name_len++; /* trailing null */ | |
3164 | strncpy(pSMB->FileName, searchName, name_len); | |
3165 | } | |
3166 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3167 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3168 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3169 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3170 | ||
3171 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3172 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 SF |
3173 | if (rc) { |
3174 | cFYI(1, ("Send error in QueryInfo = %d", rc)); | |
3175 | } else if (pFinfo) { /* decode response */ | |
1bd5bbcb SF |
3176 | struct timespec ts; |
3177 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
3178 | /* BB FIXME - add time zone adjustment BB */ | |
6b8edfe0 | 3179 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3180 | ts.tv_nsec = 0; |
3181 | ts.tv_sec = time; | |
3182 | /* decode time fields */ | |
733f99ac | 3183 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3184 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3185 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3186 | pFinfo->AllocationSize = |
3187 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3188 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3189 | pFinfo->Attributes = | |
3190 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3191 | } else |
3192 | rc = -EIO; /* bad buffer passed in */ | |
3193 | ||
3194 | cifs_buf_release(pSMB); | |
3195 | ||
3196 | if (rc == -EAGAIN) | |
3197 | goto QInfRetry; | |
3198 | ||
3199 | return rc; | |
3200 | } | |
3201 | ||
3202 | ||
3203 | ||
3204 | ||
1da177e4 LT |
3205 | int |
3206 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3207 | const unsigned char *searchName, | |
3208 | FILE_ALL_INFO * pFindData, | |
acf1a1b1 | 3209 | int legacy /* old style infolevel */, |
737b758c | 3210 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3211 | { |
3212 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3213 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3214 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3215 | int rc = 0; | |
3216 | int bytes_returned; | |
3217 | int name_len; | |
3218 | __u16 params, byte_count; | |
3219 | ||
3220 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
3221 | QPathInfoRetry: | |
3222 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3223 | (void **) &pSMBr); | |
3224 | if (rc) | |
3225 | return rc; | |
3226 | ||
3227 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3228 | name_len = | |
50c2f753 | 3229 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3230 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3231 | name_len++; /* trailing null */ |
3232 | name_len *= 2; | |
50c2f753 | 3233 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3234 | name_len = strnlen(searchName, PATH_MAX); |
3235 | name_len++; /* trailing null */ | |
3236 | strncpy(pSMB->FileName, searchName, name_len); | |
3237 | } | |
3238 | ||
50c2f753 | 3239 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3240 | pSMB->TotalDataCount = 0; |
3241 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3242 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
3243 | pSMB->MaxSetupCount = 0; | |
3244 | pSMB->Reserved = 0; | |
3245 | pSMB->Flags = 0; | |
3246 | pSMB->Timeout = 0; | |
3247 | pSMB->Reserved2 = 0; | |
3248 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3249 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3250 | pSMB->DataCount = 0; |
3251 | pSMB->DataOffset = 0; | |
3252 | pSMB->SetupCount = 1; | |
3253 | pSMB->Reserved3 = 0; | |
3254 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3255 | byte_count = params + 1 /* pad */ ; | |
3256 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3257 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3258 | if (legacy) |
acf1a1b1 SF |
3259 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3260 | else | |
3261 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3262 | pSMB->Reserved4 = 0; |
3263 | pSMB->hdr.smb_buf_length += byte_count; | |
3264 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3265 | ||
3266 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3267 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3268 | if (rc) { | |
3269 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3270 | } else { /* decode response */ | |
3271 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3272 | ||
acf1a1b1 SF |
3273 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3274 | rc = -EIO; | |
50c2f753 | 3275 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3276 | rc = -EIO; /* bad smb */ |
790fe579 | 3277 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3278 | rc = -EIO; /* 24 or 26 expected but we do not read |
3279 | last field */ | |
3280 | else if (pFindData) { | |
acf1a1b1 | 3281 | int size; |
1da177e4 | 3282 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
790fe579 SF |
3283 | if (legacy) /* we do not read the last field, EAsize, |
3284 | fortunately since it varies by subdialect | |
3285 | and on Set vs. Get, is two bytes or 4 | |
3286 | bytes depending but we don't care here */ | |
acf1a1b1 SF |
3287 | size = sizeof(FILE_INFO_STANDARD); |
3288 | else | |
3289 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3290 | memcpy((char *) pFindData, |
3291 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3292 | data_offset, size); |
1da177e4 LT |
3293 | } else |
3294 | rc = -ENOMEM; | |
3295 | } | |
3296 | cifs_buf_release(pSMB); | |
3297 | if (rc == -EAGAIN) | |
3298 | goto QPathInfoRetry; | |
3299 | ||
3300 | return rc; | |
3301 | } | |
3302 | ||
3303 | int | |
3304 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3305 | const unsigned char *searchName, | |
3306 | FILE_UNIX_BASIC_INFO * pFindData, | |
737b758c | 3307 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3308 | { |
3309 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3310 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3311 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3312 | int rc = 0; | |
3313 | int bytes_returned = 0; | |
3314 | int name_len; | |
3315 | __u16 params, byte_count; | |
3316 | ||
3317 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
3318 | UnixQPathInfoRetry: | |
3319 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3320 | (void **) &pSMBr); | |
3321 | if (rc) | |
3322 | return rc; | |
3323 | ||
3324 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3325 | name_len = | |
b1a45695 | 3326 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3327 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3328 | name_len++; /* trailing null */ |
3329 | name_len *= 2; | |
50c2f753 | 3330 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3331 | name_len = strnlen(searchName, PATH_MAX); |
3332 | name_len++; /* trailing null */ | |
3333 | strncpy(pSMB->FileName, searchName, name_len); | |
3334 | } | |
3335 | ||
50c2f753 | 3336 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3337 | pSMB->TotalDataCount = 0; |
3338 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3339 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3340 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3341 | pSMB->MaxSetupCount = 0; |
3342 | pSMB->Reserved = 0; | |
3343 | pSMB->Flags = 0; | |
3344 | pSMB->Timeout = 0; | |
3345 | pSMB->Reserved2 = 0; | |
3346 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3347 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3348 | pSMB->DataCount = 0; |
3349 | pSMB->DataOffset = 0; | |
3350 | pSMB->SetupCount = 1; | |
3351 | pSMB->Reserved3 = 0; | |
3352 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3353 | byte_count = params + 1 /* pad */ ; | |
3354 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3355 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3356 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3357 | pSMB->Reserved4 = 0; | |
3358 | pSMB->hdr.smb_buf_length += byte_count; | |
3359 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3360 | ||
3361 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3362 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3363 | if (rc) { | |
3364 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3365 | } else { /* decode response */ | |
3366 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3367 | ||
3368 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
1e71f25d SF |
3369 | cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n" |
3370 | "Unix Extensions can be disabled on mount " | |
3371 | "by specifying the nosfu mount option.")); | |
1da177e4 LT |
3372 | rc = -EIO; /* bad smb */ |
3373 | } else { | |
3374 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3375 | memcpy((char *) pFindData, | |
3376 | (char *) &pSMBr->hdr.Protocol + | |
3377 | data_offset, | |
3378 | sizeof (FILE_UNIX_BASIC_INFO)); | |
3379 | } | |
3380 | } | |
3381 | cifs_buf_release(pSMB); | |
3382 | if (rc == -EAGAIN) | |
3383 | goto UnixQPathInfoRetry; | |
3384 | ||
3385 | return rc; | |
3386 | } | |
3387 | ||
3388 | #if 0 /* function unused at present */ | |
3389 | int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon, | |
3390 | const char *searchName, FILE_ALL_INFO * findData, | |
3391 | const struct nls_table *nls_codepage) | |
3392 | { | |
3393 | /* level 257 SMB_ */ | |
3394 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3395 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
3396 | int rc = 0; | |
3397 | int bytes_returned; | |
3398 | int name_len; | |
3399 | __u16 params, byte_count; | |
3400 | ||
3401 | cFYI(1, ("In FindUnique")); | |
3402 | findUniqueRetry: | |
3403 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3404 | (void **) &pSMBr); | |
3405 | if (rc) | |
3406 | return rc; | |
3407 | ||
3408 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3409 | name_len = | |
50c2f753 SF |
3410 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3411 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3412 | name_len++; /* trailing null */ |
3413 | name_len *= 2; | |
50c2f753 | 3414 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3415 | name_len = strnlen(searchName, PATH_MAX); |
3416 | name_len++; /* trailing null */ | |
3417 | strncpy(pSMB->FileName, searchName, name_len); | |
3418 | } | |
3419 | ||
3420 | params = 12 + name_len /* includes null */ ; | |
3421 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3422 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3423 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
3424 | pSMB->MaxSetupCount = 0; | |
3425 | pSMB->Reserved = 0; | |
3426 | pSMB->Flags = 0; | |
3427 | pSMB->Timeout = 0; | |
3428 | pSMB->Reserved2 = 0; | |
3429 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 | 3430 | offsetof(struct smb_com_transaction2_ffirst_req, InformationLevel)-4); |
1da177e4 LT |
3431 | pSMB->DataCount = 0; |
3432 | pSMB->DataOffset = 0; | |
3433 | pSMB->SetupCount = 1; /* one byte, no need to le convert */ | |
3434 | pSMB->Reserved3 = 0; | |
3435 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3436 | byte_count = params + 1 /* pad */ ; | |
3437 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3438 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3439 | pSMB->SearchAttributes = | |
3440 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3441 | ATTR_DIRECTORY); | |
3442 | pSMB->SearchCount = cpu_to_le16(16); /* BB increase */ | |
3443 | pSMB->SearchFlags = cpu_to_le16(1); | |
3444 | pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO); | |
3445 | pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */ | |
3446 | pSMB->hdr.smb_buf_length += byte_count; | |
3447 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3448 | ||
3449 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3450 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3451 | ||
3452 | if (rc) { | |
3453 | cFYI(1, ("Send error in FindFileDirInfo = %d", rc)); | |
3454 | } else { /* decode response */ | |
a4544347 | 3455 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 LT |
3456 | /* BB fill in */ |
3457 | } | |
3458 | ||
3459 | cifs_buf_release(pSMB); | |
3460 | if (rc == -EAGAIN) | |
3461 | goto findUniqueRetry; | |
3462 | ||
3463 | return rc; | |
3464 | } | |
3465 | #endif /* end unused (temporarily) function */ | |
3466 | ||
3467 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ | |
3468 | int | |
3469 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3470 | const char *searchName, |
1da177e4 | 3471 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3472 | __u16 *pnetfid, |
3473 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3474 | { |
3475 | /* level 257 SMB_ */ | |
3476 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3477 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
3478 | T2_FFIRST_RSP_PARMS * parms; | |
3479 | int rc = 0; | |
3480 | int bytes_returned = 0; | |
3481 | int name_len; | |
3482 | __u16 params, byte_count; | |
3483 | ||
50c2f753 | 3484 | cFYI(1, ("In FindFirst for %s", searchName)); |
1da177e4 LT |
3485 | |
3486 | findFirstRetry: | |
3487 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3488 | (void **) &pSMBr); | |
3489 | if (rc) | |
3490 | return rc; | |
3491 | ||
3492 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3493 | name_len = | |
50c2f753 | 3494 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3495 | PATH_MAX, nls_codepage, remap); |
3496 | /* We can not add the asterik earlier in case | |
3497 | it got remapped to 0xF03A as if it were part of the | |
3498 | directory name instead of a wildcard */ | |
1da177e4 | 3499 | name_len *= 2; |
ac67055e | 3500 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3501 | pSMB->FileName[name_len+1] = 0; |
3502 | pSMB->FileName[name_len+2] = '*'; | |
3503 | pSMB->FileName[name_len+3] = 0; | |
3504 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3505 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3506 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3507 | name_len += 2; |
1da177e4 LT |
3508 | } else { /* BB add check for overrun of SMB buf BB */ |
3509 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3510 | /* BB fix here and in unicode clause above ie |
790fe579 | 3511 | if (name_len > buffersize-header) |
1da177e4 LT |
3512 | free buffer exit; BB */ |
3513 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3514 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3515 | pSMB->FileName[name_len+1] = '*'; |
3516 | pSMB->FileName[name_len+2] = 0; | |
3517 | name_len += 3; | |
1da177e4 LT |
3518 | } |
3519 | ||
3520 | params = 12 + name_len /* includes null */ ; | |
3521 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3522 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3523 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3524 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3525 | pSMB->MaxSetupCount = 0; | |
3526 | pSMB->Reserved = 0; | |
3527 | pSMB->Flags = 0; | |
3528 | pSMB->Timeout = 0; | |
3529 | pSMB->Reserved2 = 0; | |
3530 | byte_count = params + 1 /* pad */ ; | |
3531 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3532 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3533 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3534 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3535 | - 4); | |
1da177e4 LT |
3536 | pSMB->DataCount = 0; |
3537 | pSMB->DataOffset = 0; | |
3538 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3539 | pSMB->Reserved3 = 0; | |
3540 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3541 | pSMB->SearchAttributes = | |
3542 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3543 | ATTR_DIRECTORY); | |
50c2f753 SF |
3544 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3545 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3546 | CIFS_SEARCH_RETURN_RESUME); |
3547 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3548 | ||
3549 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3550 | pSMB->SearchStorageType = 0; | |
3551 | pSMB->hdr.smb_buf_length += byte_count; | |
3552 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3553 | ||
3554 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3555 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3556 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3557 | |
88274815 SF |
3558 | if (rc) {/* BB add logic to retry regular search if Unix search |
3559 | rejected unexpectedly by server */ | |
1da177e4 LT |
3560 | /* BB Add code to handle unsupported level rc */ |
3561 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
1982c344 | 3562 | |
88274815 | 3563 | cifs_buf_release(pSMB); |
1da177e4 LT |
3564 | |
3565 | /* BB eventually could optimize out free and realloc of buf */ | |
3566 | /* for this case */ | |
3567 | if (rc == -EAGAIN) | |
3568 | goto findFirstRetry; | |
3569 | } else { /* decode response */ | |
3570 | /* BB remember to free buffer if error BB */ | |
3571 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3572 | if (rc == 0) { |
1da177e4 LT |
3573 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3574 | psrch_inf->unicode = TRUE; | |
3575 | else | |
3576 | psrch_inf->unicode = FALSE; | |
3577 | ||
3578 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3579 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3580 | psrch_inf->srch_entries_start = |
3581 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3582 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3583 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3584 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3585 | ||
790fe579 | 3586 | if (parms->EndofSearch) |
1da177e4 LT |
3587 | psrch_inf->endOfSearch = TRUE; |
3588 | else | |
3589 | psrch_inf->endOfSearch = FALSE; | |
3590 | ||
50c2f753 SF |
3591 | psrch_inf->entries_in_buffer = |
3592 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3593 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3594 | psrch_inf->entries_in_buffer; |
1da177e4 LT |
3595 | *pnetfid = parms->SearchHandle; |
3596 | } else { | |
3597 | cifs_buf_release(pSMB); | |
3598 | } | |
3599 | } | |
3600 | ||
3601 | return rc; | |
3602 | } | |
3603 | ||
3604 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3605 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3606 | { |
3607 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3608 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
3609 | T2_FNEXT_RSP_PARMS * parms; | |
3610 | char *response_data; | |
3611 | int rc = 0; | |
3612 | int bytes_returned, name_len; | |
3613 | __u16 params, byte_count; | |
3614 | ||
3615 | cFYI(1, ("In FindNext")); | |
3616 | ||
790fe579 | 3617 | if (psrch_inf->endOfSearch == TRUE) |
1da177e4 LT |
3618 | return -ENOENT; |
3619 | ||
3620 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3621 | (void **) &pSMBr); | |
3622 | if (rc) | |
3623 | return rc; | |
3624 | ||
50c2f753 | 3625 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3626 | byte_count = 0; |
3627 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3628 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3629 | pSMB->MaxDataCount = | |
50c2f753 SF |
3630 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3631 | 0xFFFFFF00); | |
1da177e4 LT |
3632 | pSMB->MaxSetupCount = 0; |
3633 | pSMB->Reserved = 0; | |
3634 | pSMB->Flags = 0; | |
3635 | pSMB->Timeout = 0; | |
3636 | pSMB->Reserved2 = 0; | |
3637 | pSMB->ParameterOffset = cpu_to_le16( | |
3638 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3639 | pSMB->DataCount = 0; | |
3640 | pSMB->DataOffset = 0; | |
3641 | pSMB->SetupCount = 1; | |
3642 | pSMB->Reserved3 = 0; | |
3643 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3644 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3645 | pSMB->SearchCount = | |
3646 | cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO)); | |
1da177e4 LT |
3647 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3648 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3649 | pSMB->SearchFlags = | |
3650 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3651 | ||
3652 | name_len = psrch_inf->resume_name_len; | |
3653 | params += name_len; | |
790fe579 | 3654 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3655 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3656 | byte_count += name_len; | |
ef6724e3 SF |
3657 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3658 | pSMB->ResumeFileName[name_len] = 0; | |
3659 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3660 | } else { |
3661 | rc = -EINVAL; | |
3662 | goto FNext2_err_exit; | |
3663 | } | |
3664 | byte_count = params + 1 /* pad */ ; | |
3665 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3666 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3667 | pSMB->hdr.smb_buf_length += byte_count; | |
3668 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3669 | |
1da177e4 LT |
3670 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3671 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3672 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3673 | if (rc) { |
3674 | if (rc == -EBADF) { | |
3675 | psrch_inf->endOfSearch = TRUE; | |
50c2f753 | 3676 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 LT |
3677 | } else |
3678 | cFYI(1, ("FindNext returned = %d", rc)); | |
3679 | } else { /* decode response */ | |
3680 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3681 | |
790fe579 | 3682 | if (rc == 0) { |
1da177e4 LT |
3683 | /* BB fixme add lock for file (srch_info) struct here */ |
3684 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
3685 | psrch_inf->unicode = TRUE; | |
3686 | else | |
3687 | psrch_inf->unicode = FALSE; | |
3688 | response_data = (char *) &pSMBr->hdr.Protocol + | |
3689 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3690 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3691 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3692 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3693 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3694 | cifs_small_buf_release( |
3695 | psrch_inf->ntwrk_buf_start); | |
3696 | else | |
3697 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3698 | psrch_inf->srch_entries_start = response_data; |
3699 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3700 | psrch_inf->smallBuf = 0; |
790fe579 | 3701 | if (parms->EndofSearch) |
1da177e4 LT |
3702 | psrch_inf->endOfSearch = TRUE; |
3703 | else | |
3704 | psrch_inf->endOfSearch = FALSE; | |
50c2f753 SF |
3705 | psrch_inf->entries_in_buffer = |
3706 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3707 | psrch_inf->index_of_last_entry += |
3708 | psrch_inf->entries_in_buffer; | |
50c2f753 SF |
3709 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d", |
3710 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry)); */ | |
1da177e4 LT |
3711 | |
3712 | /* BB fixme add unlock here */ | |
3713 | } | |
3714 | ||
3715 | } | |
3716 | ||
3717 | /* BB On error, should we leave previous search buf (and count and | |
3718 | last entry fields) intact or free the previous one? */ | |
3719 | ||
3720 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3721 | since file handle passed in no longer valid */ | |
3722 | FNext2_err_exit: | |
3723 | if (rc != 0) | |
3724 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3725 | return rc; |
3726 | } | |
3727 | ||
3728 | int | |
50c2f753 SF |
3729 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3730 | const __u16 searchHandle) | |
1da177e4 LT |
3731 | { |
3732 | int rc = 0; | |
3733 | FINDCLOSE_REQ *pSMB = NULL; | |
3734 | CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */ | |
3735 | int bytes_returned; | |
3736 | ||
3737 | cFYI(1, ("In CIFSSMBFindClose")); | |
3738 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
3739 | ||
3740 | /* no sense returning error if session restarted | |
3741 | as file handle has been closed */ | |
790fe579 | 3742 | if (rc == -EAGAIN) |
1da177e4 LT |
3743 | return 0; |
3744 | if (rc) | |
3745 | return rc; | |
3746 | ||
3747 | pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */ | |
3748 | pSMB->FileID = searchHandle; | |
3749 | pSMB->ByteCount = 0; | |
3750 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3751 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3752 | if (rc) { | |
3753 | cERROR(1, ("Send error in FindClose = %d", rc)); | |
3754 | } | |
a4544347 | 3755 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3756 | cifs_small_buf_release(pSMB); |
3757 | ||
3758 | /* Since session is dead, search handle closed on server already */ | |
3759 | if (rc == -EAGAIN) | |
3760 | rc = 0; | |
3761 | ||
3762 | return rc; | |
3763 | } | |
3764 | ||
1da177e4 LT |
3765 | int |
3766 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3767 | const unsigned char *searchName, |
3768 | __u64 * inode_number, | |
3769 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3770 | { |
3771 | int rc = 0; | |
3772 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3773 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3774 | int name_len, bytes_returned; | |
3775 | __u16 params, byte_count; | |
3776 | ||
50c2f753 | 3777 | cFYI(1, ("In GetSrvInodeNum for %s", searchName)); |
790fe579 | 3778 | if (tcon == NULL) |
50c2f753 | 3779 | return -ENODEV; |
1da177e4 LT |
3780 | |
3781 | GetInodeNumberRetry: | |
3782 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3783 | (void **) &pSMBr); |
1da177e4 LT |
3784 | if (rc) |
3785 | return rc; | |
3786 | ||
1da177e4 LT |
3787 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3788 | name_len = | |
b1a45695 | 3789 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 3790 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3791 | name_len++; /* trailing null */ |
3792 | name_len *= 2; | |
50c2f753 | 3793 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3794 | name_len = strnlen(searchName, PATH_MAX); |
3795 | name_len++; /* trailing null */ | |
3796 | strncpy(pSMB->FileName, searchName, name_len); | |
3797 | } | |
3798 | ||
3799 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3800 | pSMB->TotalDataCount = 0; | |
3801 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3802 | /* BB find exact max data count below from sess structure BB */ | |
3803 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3804 | pSMB->MaxSetupCount = 0; | |
3805 | pSMB->Reserved = 0; | |
3806 | pSMB->Flags = 0; | |
3807 | pSMB->Timeout = 0; | |
3808 | pSMB->Reserved2 = 0; | |
3809 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3810 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3811 | pSMB->DataCount = 0; |
3812 | pSMB->DataOffset = 0; | |
3813 | pSMB->SetupCount = 1; | |
3814 | pSMB->Reserved3 = 0; | |
3815 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3816 | byte_count = params + 1 /* pad */ ; | |
3817 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3818 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3819 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3820 | pSMB->Reserved4 = 0; | |
3821 | pSMB->hdr.smb_buf_length += byte_count; | |
3822 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3823 | ||
3824 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3825 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3826 | if (rc) { | |
3827 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
3828 | } else { | |
3829 | /* decode response */ | |
3830 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3831 | if (rc || (pSMBr->ByteCount < 2)) | |
3832 | /* BB also check enough total bytes returned */ | |
3833 | /* If rc should we check for EOPNOSUPP and | |
3834 | disable the srvino flag? or in caller? */ | |
3835 | rc = -EIO; /* bad smb */ | |
50c2f753 | 3836 | else { |
1da177e4 LT |
3837 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
3838 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 3839 | struct file_internal_info *pfinfo; |
1da177e4 | 3840 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 3841 | if (count < 8) { |
1da177e4 LT |
3842 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); |
3843 | rc = -EIO; | |
3844 | goto GetInodeNumOut; | |
3845 | } | |
3846 | pfinfo = (struct file_internal_info *) | |
3847 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3848 | *inode_number = pfinfo->UniqueId; | |
3849 | } | |
3850 | } | |
3851 | GetInodeNumOut: | |
3852 | cifs_buf_release(pSMB); | |
3853 | if (rc == -EAGAIN) | |
3854 | goto GetInodeNumberRetry; | |
3855 | return rc; | |
3856 | } | |
1da177e4 LT |
3857 | |
3858 | int | |
3859 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
3860 | const unsigned char *searchName, | |
3861 | unsigned char **targetUNCs, | |
3862 | unsigned int *number_of_UNC_in_array, | |
737b758c | 3863 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3864 | { |
3865 | /* TRANS2_GET_DFS_REFERRAL */ | |
3866 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
3867 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
50c2f753 | 3868 | struct dfs_referral_level_3 *referrals = NULL; |
1da177e4 LT |
3869 | int rc = 0; |
3870 | int bytes_returned; | |
3871 | int name_len; | |
3872 | unsigned int i; | |
50c2f753 | 3873 | char *temp; |
1da177e4 LT |
3874 | __u16 params, byte_count; |
3875 | *number_of_UNC_in_array = 0; | |
3876 | *targetUNCs = NULL; | |
3877 | ||
3878 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
3879 | if (ses == NULL) | |
3880 | return -ENODEV; | |
3881 | getDFSRetry: | |
3882 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
3883 | (void **) &pSMBr); | |
3884 | if (rc) | |
3885 | return rc; | |
50c2f753 SF |
3886 | |
3887 | /* server pointer checked in called function, | |
1982c344 SF |
3888 | but should never be null here anyway */ |
3889 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3890 | pSMB->hdr.Tid = ses->ipc_tid; |
3891 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 3892 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 3893 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 3894 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 3895 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
3896 | |
3897 | if (ses->capabilities & CAP_UNICODE) { | |
3898 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
3899 | name_len = | |
b1a45695 | 3900 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 3901 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3902 | name_len++; /* trailing null */ |
3903 | name_len *= 2; | |
50c2f753 | 3904 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3905 | name_len = strnlen(searchName, PATH_MAX); |
3906 | name_len++; /* trailing null */ | |
3907 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
3908 | } | |
3909 | ||
790fe579 SF |
3910 | if (ses->server) { |
3911 | if (ses->server->secMode & | |
1a4e15a0 SF |
3912 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
3913 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
3914 | } | |
3915 | ||
50c2f753 | 3916 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 3917 | |
1da177e4 LT |
3918 | params = 2 /* level */ + name_len /*includes null */ ; |
3919 | pSMB->TotalDataCount = 0; | |
3920 | pSMB->DataCount = 0; | |
3921 | pSMB->DataOffset = 0; | |
3922 | pSMB->MaxParameterCount = 0; | |
3923 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
3924 | pSMB->MaxSetupCount = 0; | |
3925 | pSMB->Reserved = 0; | |
3926 | pSMB->Flags = 0; | |
3927 | pSMB->Timeout = 0; | |
3928 | pSMB->Reserved2 = 0; | |
3929 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3930 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
3931 | pSMB->SetupCount = 1; |
3932 | pSMB->Reserved3 = 0; | |
3933 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
3934 | byte_count = params + 3 /* pad */ ; | |
3935 | pSMB->ParameterCount = cpu_to_le16(params); | |
3936 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3937 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
3938 | pSMB->hdr.smb_buf_length += byte_count; | |
3939 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3940 | ||
3941 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
3942 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3943 | if (rc) { | |
3944 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
3945 | } else { /* decode response */ | |
3946 | /* BB Add logic to parse referrals here */ | |
3947 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3948 | ||
50c2f753 SF |
3949 | /* BB Also check if enough total bytes returned? */ |
3950 | if (rc || (pSMBr->ByteCount < 17)) | |
1da177e4 LT |
3951 | rc = -EIO; /* bad smb */ |
3952 | else { | |
50c2f753 | 3953 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3954 | __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); |
3955 | ||
3956 | cFYI(1, | |
50c2f753 | 3957 | ("Decoding GetDFSRefer response BCC: %d Offset %d", |
1da177e4 | 3958 | pSMBr->ByteCount, data_offset)); |
50c2f753 SF |
3959 | referrals = |
3960 | (struct dfs_referral_level_3 *) | |
1da177e4 LT |
3961 | (8 /* sizeof start of data block */ + |
3962 | data_offset + | |
50c2f753 | 3963 | (char *) &pSMBr->hdr.Protocol); |
c18c842b | 3964 | cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n" |
63135e08 SF |
3965 | "for referral one refer size: 0x%x srv " |
3966 | "type: 0x%x refer flags: 0x%x ttl: 0x%x", | |
50c2f753 SF |
3967 | le16_to_cpu(pSMBr->NumberOfReferrals), |
3968 | le16_to_cpu(pSMBr->DFSFlags), | |
3969 | le16_to_cpu(referrals->ReferralSize), | |
3970 | le16_to_cpu(referrals->ServerType), | |
3971 | le16_to_cpu(referrals->ReferralFlags), | |
3972 | le16_to_cpu(referrals->TimeToLive))); | |
1da177e4 LT |
3973 | /* BB This field is actually two bytes in from start of |
3974 | data block so we could do safety check that DataBlock | |
3975 | begins at address of pSMBr->NumberOfReferrals */ | |
50c2f753 SF |
3976 | *number_of_UNC_in_array = |
3977 | le16_to_cpu(pSMBr->NumberOfReferrals); | |
1da177e4 LT |
3978 | |
3979 | /* BB Fix below so can return more than one referral */ | |
790fe579 | 3980 | if (*number_of_UNC_in_array > 1) |
1da177e4 LT |
3981 | *number_of_UNC_in_array = 1; |
3982 | ||
3983 | /* get the length of the strings describing refs */ | |
3984 | name_len = 0; | |
50c2f753 | 3985 | for (i = 0; i < *number_of_UNC_in_array; i++) { |
1da177e4 | 3986 | /* make sure that DfsPathOffset not past end */ |
50c2f753 SF |
3987 | __u16 offset = |
3988 | le16_to_cpu(referrals->DfsPathOffset); | |
1da177e4 | 3989 | if (offset > data_count) { |
50c2f753 | 3990 | /* if invalid referral, stop here and do |
1da177e4 LT |
3991 | not try to copy any more */ |
3992 | *number_of_UNC_in_array = i; | |
3993 | break; | |
50c2f753 | 3994 | } |
1da177e4 LT |
3995 | temp = ((char *)referrals) + offset; |
3996 | ||
3997 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 SF |
3998 | name_len += UniStrnlen((wchar_t *)temp, |
3999 | data_count); | |
1da177e4 | 4000 | } else { |
50c2f753 | 4001 | name_len += strnlen(temp, data_count); |
1da177e4 LT |
4002 | } |
4003 | referrals++; | |
50c2f753 SF |
4004 | /* BB add check that referral pointer does |
4005 | not fall off end PDU */ | |
1da177e4 LT |
4006 | } |
4007 | /* BB add check for name_len bigger than bcc */ | |
50c2f753 SF |
4008 | *targetUNCs = |
4009 | kmalloc(name_len+1+(*number_of_UNC_in_array), | |
4010 | GFP_KERNEL); | |
790fe579 | 4011 | if (*targetUNCs == NULL) { |
1da177e4 LT |
4012 | rc = -ENOMEM; |
4013 | goto GetDFSRefExit; | |
4014 | } | |
4015 | /* copy the ref strings */ | |
50c2f753 SF |
4016 | referrals = (struct dfs_referral_level_3 *) |
4017 | (8 /* sizeof data hdr */ + data_offset + | |
1da177e4 LT |
4018 | (char *) &pSMBr->hdr.Protocol); |
4019 | ||
50c2f753 SF |
4020 | for (i = 0; i < *number_of_UNC_in_array; i++) { |
4021 | temp = ((char *)referrals) + | |
4022 | le16_to_cpu(referrals->DfsPathOffset); | |
1da177e4 LT |
4023 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
4024 | cifs_strfromUCS_le(*targetUNCs, | |
50c2f753 SF |
4025 | (__le16 *) temp, |
4026 | name_len, | |
4027 | nls_codepage); | |
1da177e4 | 4028 | } else { |
50c2f753 | 4029 | strncpy(*targetUNCs, temp, name_len); |
1da177e4 LT |
4030 | } |
4031 | /* BB update target_uncs pointers */ | |
4032 | referrals++; | |
4033 | } | |
4034 | temp = *targetUNCs; | |
4035 | temp[name_len] = 0; | |
4036 | } | |
4037 | ||
4038 | } | |
4039 | GetDFSRefExit: | |
4040 | if (pSMB) | |
4041 | cifs_buf_release(pSMB); | |
4042 | ||
4043 | if (rc == -EAGAIN) | |
4044 | goto getDFSRetry; | |
4045 | ||
4046 | return rc; | |
4047 | } | |
4048 | ||
20962438 SF |
4049 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4050 | int | |
4051 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4052 | { | |
4053 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4054 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4055 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4056 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4057 | int rc = 0; | |
4058 | int bytes_returned = 0; | |
4059 | __u16 params, byte_count; | |
4060 | ||
4061 | cFYI(1, ("OldQFSInfo")); | |
4062 | oldQFSInfoRetry: | |
4063 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4064 | (void **) &pSMBr); | |
4065 | if (rc) | |
4066 | return rc; | |
20962438 SF |
4067 | |
4068 | params = 2; /* level */ | |
4069 | pSMB->TotalDataCount = 0; | |
4070 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4071 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4072 | pSMB->MaxSetupCount = 0; | |
4073 | pSMB->Reserved = 0; | |
4074 | pSMB->Flags = 0; | |
4075 | pSMB->Timeout = 0; | |
4076 | pSMB->Reserved2 = 0; | |
4077 | byte_count = params + 1 /* pad */ ; | |
4078 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4079 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4080 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4081 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4082 | pSMB->DataCount = 0; | |
4083 | pSMB->DataOffset = 0; | |
4084 | pSMB->SetupCount = 1; | |
4085 | pSMB->Reserved3 = 0; | |
4086 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4087 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4088 | pSMB->hdr.smb_buf_length += byte_count; | |
4089 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4090 | ||
4091 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4092 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4093 | if (rc) { | |
4094 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
4095 | } else { /* decode response */ | |
4096 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4097 | ||
4098 | if (rc || (pSMBr->ByteCount < 18)) | |
4099 | rc = -EIO; /* bad smb */ | |
4100 | else { | |
4101 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 4102 | cFYI(1, ("qfsinf resp BCC: %d Offset %d", |
20962438 SF |
4103 | pSMBr->ByteCount, data_offset)); |
4104 | ||
50c2f753 | 4105 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4106 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4107 | FSData->f_bsize = | |
4108 | le16_to_cpu(response_data->BytesPerSector) * | |
4109 | le32_to_cpu(response_data-> | |
4110 | SectorsPerAllocationUnit); | |
4111 | FSData->f_blocks = | |
50c2f753 | 4112 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4113 | FSData->f_bfree = FSData->f_bavail = |
4114 | le32_to_cpu(response_data->FreeAllocationUnits); | |
4115 | cFYI(1, | |
4116 | ("Blocks: %lld Free: %lld Block size %ld", | |
4117 | (unsigned long long)FSData->f_blocks, | |
4118 | (unsigned long long)FSData->f_bfree, | |
4119 | FSData->f_bsize)); | |
4120 | } | |
4121 | } | |
4122 | cifs_buf_release(pSMB); | |
4123 | ||
4124 | if (rc == -EAGAIN) | |
4125 | goto oldQFSInfoRetry; | |
4126 | ||
4127 | return rc; | |
4128 | } | |
4129 | ||
1da177e4 | 4130 | int |
737b758c | 4131 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4132 | { |
4133 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4134 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4135 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4136 | FILE_SYSTEM_INFO *response_data; | |
4137 | int rc = 0; | |
4138 | int bytes_returned = 0; | |
4139 | __u16 params, byte_count; | |
4140 | ||
4141 | cFYI(1, ("In QFSInfo")); | |
4142 | QFSInfoRetry: | |
4143 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4144 | (void **) &pSMBr); | |
4145 | if (rc) | |
4146 | return rc; | |
4147 | ||
4148 | params = 2; /* level */ | |
4149 | pSMB->TotalDataCount = 0; | |
4150 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4151 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4152 | pSMB->MaxSetupCount = 0; |
4153 | pSMB->Reserved = 0; | |
4154 | pSMB->Flags = 0; | |
4155 | pSMB->Timeout = 0; | |
4156 | pSMB->Reserved2 = 0; | |
4157 | byte_count = params + 1 /* pad */ ; | |
4158 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4159 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4160 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4161 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4162 | pSMB->DataCount = 0; |
4163 | pSMB->DataOffset = 0; | |
4164 | pSMB->SetupCount = 1; | |
4165 | pSMB->Reserved3 = 0; | |
4166 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4167 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4168 | pSMB->hdr.smb_buf_length += byte_count; | |
4169 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4170 | ||
4171 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4172 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4173 | if (rc) { | |
20962438 | 4174 | cFYI(1, ("Send error in QFSInfo = %d", rc)); |
1da177e4 | 4175 | } else { /* decode response */ |
50c2f753 | 4176 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4177 | |
20962438 | 4178 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4179 | rc = -EIO; /* bad smb */ |
4180 | else { | |
4181 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4182 | |
4183 | response_data = | |
4184 | (FILE_SYSTEM_INFO | |
4185 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4186 | data_offset); | |
4187 | FSData->f_bsize = | |
4188 | le32_to_cpu(response_data->BytesPerSector) * | |
4189 | le32_to_cpu(response_data-> | |
4190 | SectorsPerAllocationUnit); | |
4191 | FSData->f_blocks = | |
4192 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4193 | FSData->f_bfree = FSData->f_bavail = | |
4194 | le64_to_cpu(response_data->FreeAllocationUnits); | |
4195 | cFYI(1, | |
4196 | ("Blocks: %lld Free: %lld Block size %ld", | |
4197 | (unsigned long long)FSData->f_blocks, | |
4198 | (unsigned long long)FSData->f_bfree, | |
4199 | FSData->f_bsize)); | |
4200 | } | |
4201 | } | |
4202 | cifs_buf_release(pSMB); | |
4203 | ||
4204 | if (rc == -EAGAIN) | |
4205 | goto QFSInfoRetry; | |
4206 | ||
4207 | return rc; | |
4208 | } | |
4209 | ||
4210 | int | |
737b758c | 4211 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4212 | { |
4213 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4214 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4215 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4216 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4217 | int rc = 0; | |
4218 | int bytes_returned = 0; | |
4219 | __u16 params, byte_count; | |
4220 | ||
4221 | cFYI(1, ("In QFSAttributeInfo")); | |
4222 | QFSAttributeRetry: | |
4223 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4224 | (void **) &pSMBr); | |
4225 | if (rc) | |
4226 | return rc; | |
4227 | ||
4228 | params = 2; /* level */ | |
4229 | pSMB->TotalDataCount = 0; | |
4230 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4231 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4232 | pSMB->MaxSetupCount = 0; | |
4233 | pSMB->Reserved = 0; | |
4234 | pSMB->Flags = 0; | |
4235 | pSMB->Timeout = 0; | |
4236 | pSMB->Reserved2 = 0; | |
4237 | byte_count = params + 1 /* pad */ ; | |
4238 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4239 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4240 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4241 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4242 | pSMB->DataCount = 0; |
4243 | pSMB->DataOffset = 0; | |
4244 | pSMB->SetupCount = 1; | |
4245 | pSMB->Reserved3 = 0; | |
4246 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4247 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4248 | pSMB->hdr.smb_buf_length += byte_count; | |
4249 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4250 | ||
4251 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4252 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4253 | if (rc) { | |
4254 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
4255 | } else { /* decode response */ | |
4256 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4257 | ||
50c2f753 SF |
4258 | if (rc || (pSMBr->ByteCount < 13)) { |
4259 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4260 | rc = -EIO; /* bad smb */ |
4261 | } else { | |
4262 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4263 | response_data = | |
4264 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4265 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4266 | data_offset); | |
4267 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4268 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4269 | } |
4270 | } | |
4271 | cifs_buf_release(pSMB); | |
4272 | ||
4273 | if (rc == -EAGAIN) | |
4274 | goto QFSAttributeRetry; | |
4275 | ||
4276 | return rc; | |
4277 | } | |
4278 | ||
4279 | int | |
737b758c | 4280 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4281 | { |
4282 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4283 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4284 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4285 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4286 | int rc = 0; | |
4287 | int bytes_returned = 0; | |
4288 | __u16 params, byte_count; | |
4289 | ||
4290 | cFYI(1, ("In QFSDeviceInfo")); | |
4291 | QFSDeviceRetry: | |
4292 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4293 | (void **) &pSMBr); | |
4294 | if (rc) | |
4295 | return rc; | |
4296 | ||
4297 | params = 2; /* level */ | |
4298 | pSMB->TotalDataCount = 0; | |
4299 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4300 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4301 | pSMB->MaxSetupCount = 0; | |
4302 | pSMB->Reserved = 0; | |
4303 | pSMB->Flags = 0; | |
4304 | pSMB->Timeout = 0; | |
4305 | pSMB->Reserved2 = 0; | |
4306 | byte_count = params + 1 /* pad */ ; | |
4307 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4308 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4309 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4310 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4311 | |
4312 | pSMB->DataCount = 0; | |
4313 | pSMB->DataOffset = 0; | |
4314 | pSMB->SetupCount = 1; | |
4315 | pSMB->Reserved3 = 0; | |
4316 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4317 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4318 | pSMB->hdr.smb_buf_length += byte_count; | |
4319 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4320 | ||
4321 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4322 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4323 | if (rc) { | |
4324 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
4325 | } else { /* decode response */ | |
4326 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4327 | ||
4328 | if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO))) | |
4329 | rc = -EIO; /* bad smb */ | |
4330 | else { | |
4331 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4332 | response_data = | |
737b758c SF |
4333 | (FILE_SYSTEM_DEVICE_INFO *) |
4334 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4335 | data_offset); |
4336 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4337 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4338 | } |
4339 | } | |
4340 | cifs_buf_release(pSMB); | |
4341 | ||
4342 | if (rc == -EAGAIN) | |
4343 | goto QFSDeviceRetry; | |
4344 | ||
4345 | return rc; | |
4346 | } | |
4347 | ||
4348 | int | |
737b758c | 4349 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4350 | { |
4351 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4352 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4353 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4354 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4355 | int rc = 0; | |
4356 | int bytes_returned = 0; | |
4357 | __u16 params, byte_count; | |
4358 | ||
4359 | cFYI(1, ("In QFSUnixInfo")); | |
4360 | QFSUnixRetry: | |
4361 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4362 | (void **) &pSMBr); | |
4363 | if (rc) | |
4364 | return rc; | |
4365 | ||
4366 | params = 2; /* level */ | |
4367 | pSMB->TotalDataCount = 0; | |
4368 | pSMB->DataCount = 0; | |
4369 | pSMB->DataOffset = 0; | |
4370 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4371 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
4372 | pSMB->MaxSetupCount = 0; | |
4373 | pSMB->Reserved = 0; | |
4374 | pSMB->Flags = 0; | |
4375 | pSMB->Timeout = 0; | |
4376 | pSMB->Reserved2 = 0; | |
4377 | byte_count = params + 1 /* pad */ ; | |
4378 | pSMB->ParameterCount = cpu_to_le16(params); | |
4379 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4380 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4381 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4382 | pSMB->SetupCount = 1; |
4383 | pSMB->Reserved3 = 0; | |
4384 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4385 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4386 | pSMB->hdr.smb_buf_length += byte_count; | |
4387 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4388 | ||
4389 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4390 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4391 | if (rc) { | |
4392 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4393 | } else { /* decode response */ | |
4394 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4395 | ||
4396 | if (rc || (pSMBr->ByteCount < 13)) { | |
4397 | rc = -EIO; /* bad smb */ | |
4398 | } else { | |
4399 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4400 | response_data = | |
4401 | (FILE_SYSTEM_UNIX_INFO | |
4402 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4403 | data_offset); | |
4404 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4405 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4406 | } |
4407 | } | |
4408 | cifs_buf_release(pSMB); | |
4409 | ||
4410 | if (rc == -EAGAIN) | |
4411 | goto QFSUnixRetry; | |
4412 | ||
4413 | ||
4414 | return rc; | |
4415 | } | |
4416 | ||
ac67055e | 4417 | int |
45abc6ee | 4418 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4419 | { |
4420 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4421 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4422 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4423 | int rc = 0; | |
4424 | int bytes_returned = 0; | |
4425 | __u16 params, param_offset, offset, byte_count; | |
4426 | ||
4427 | cFYI(1, ("In SETFSUnixInfo")); | |
4428 | SETFSUnixRetry: | |
f26282c9 | 4429 | /* BB switch to small buf init to save memory */ |
ac67055e JA |
4430 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
4431 | (void **) &pSMBr); | |
4432 | if (rc) | |
4433 | return rc; | |
4434 | ||
4435 | params = 4; /* 2 bytes zero followed by info level. */ | |
4436 | pSMB->MaxSetupCount = 0; | |
4437 | pSMB->Reserved = 0; | |
4438 | pSMB->Flags = 0; | |
4439 | pSMB->Timeout = 0; | |
4440 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4441 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4442 | - 4; | |
ac67055e JA |
4443 | offset = param_offset + params; |
4444 | ||
4445 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
4446 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
4447 | pSMB->SetupCount = 1; | |
4448 | pSMB->Reserved3 = 0; | |
4449 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4450 | byte_count = 1 /* pad */ + params + 12; | |
4451 | ||
4452 | pSMB->DataCount = cpu_to_le16(12); | |
4453 | pSMB->ParameterCount = cpu_to_le16(params); | |
4454 | pSMB->TotalDataCount = pSMB->DataCount; | |
4455 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4456 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4457 | pSMB->DataOffset = cpu_to_le16(offset); | |
4458 | ||
4459 | /* Params. */ | |
4460 | pSMB->FileNum = 0; | |
4461 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4462 | ||
4463 | /* Data. */ | |
4464 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4465 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4466 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4467 | ||
4468 | pSMB->hdr.smb_buf_length += byte_count; | |
4469 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4470 | ||
4471 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4472 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4473 | if (rc) { | |
4474 | cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); | |
4475 | } else { /* decode response */ | |
4476 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4477 | if (rc) { | |
4478 | rc = -EIO; /* bad smb */ | |
4479 | } | |
4480 | } | |
4481 | cifs_buf_release(pSMB); | |
4482 | ||
4483 | if (rc == -EAGAIN) | |
4484 | goto SETFSUnixRetry; | |
4485 | ||
4486 | return rc; | |
4487 | } | |
4488 | ||
4489 | ||
1da177e4 LT |
4490 | |
4491 | int | |
4492 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4493 | struct kstatfs *FSData) |
1da177e4 LT |
4494 | { |
4495 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4496 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4497 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4498 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4499 | int rc = 0; | |
4500 | int bytes_returned = 0; | |
4501 | __u16 params, byte_count; | |
4502 | ||
4503 | cFYI(1, ("In QFSPosixInfo")); | |
4504 | QFSPosixRetry: | |
4505 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4506 | (void **) &pSMBr); | |
4507 | if (rc) | |
4508 | return rc; | |
4509 | ||
4510 | params = 2; /* level */ | |
4511 | pSMB->TotalDataCount = 0; | |
4512 | pSMB->DataCount = 0; | |
4513 | pSMB->DataOffset = 0; | |
4514 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4515 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
4516 | pSMB->MaxSetupCount = 0; | |
4517 | pSMB->Reserved = 0; | |
4518 | pSMB->Flags = 0; | |
4519 | pSMB->Timeout = 0; | |
4520 | pSMB->Reserved2 = 0; | |
4521 | byte_count = params + 1 /* pad */ ; | |
4522 | pSMB->ParameterCount = cpu_to_le16(params); | |
4523 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4524 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4525 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4526 | pSMB->SetupCount = 1; |
4527 | pSMB->Reserved3 = 0; | |
4528 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4529 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4530 | pSMB->hdr.smb_buf_length += byte_count; | |
4531 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4532 | ||
4533 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4534 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4535 | if (rc) { | |
4536 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4537 | } else { /* decode response */ | |
4538 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4539 | ||
4540 | if (rc || (pSMBr->ByteCount < 13)) { | |
4541 | rc = -EIO; /* bad smb */ | |
4542 | } else { | |
4543 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4544 | response_data = | |
4545 | (FILE_SYSTEM_POSIX_INFO | |
4546 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4547 | data_offset); | |
4548 | FSData->f_bsize = | |
4549 | le32_to_cpu(response_data->BlockSize); | |
4550 | FSData->f_blocks = | |
4551 | le64_to_cpu(response_data->TotalBlocks); | |
4552 | FSData->f_bfree = | |
4553 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4554 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4555 | FSData->f_bavail = FSData->f_bfree; |
4556 | } else { | |
4557 | FSData->f_bavail = | |
50c2f753 | 4558 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4559 | } |
790fe579 | 4560 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4561 | FSData->f_files = |
50c2f753 | 4562 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4563 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4564 | FSData->f_ffree = |
50c2f753 | 4565 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4566 | } |
4567 | } | |
4568 | cifs_buf_release(pSMB); | |
4569 | ||
4570 | if (rc == -EAGAIN) | |
4571 | goto QFSPosixRetry; | |
4572 | ||
4573 | return rc; | |
4574 | } | |
4575 | ||
4576 | ||
50c2f753 SF |
4577 | /* We can not use write of zero bytes trick to |
4578 | set file size due to need for large file support. Also note that | |
4579 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4580 | routine which is only needed to work around a sharing violation bug |
4581 | in Samba which this routine can run into */ | |
4582 | ||
4583 | int | |
4584 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 | 4585 | __u64 size, int SetAllocation, |
737b758c | 4586 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4587 | { |
4588 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4589 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4590 | struct file_end_of_file_info *parm_data; | |
4591 | int name_len; | |
4592 | int rc = 0; | |
4593 | int bytes_returned = 0; | |
4594 | __u16 params, byte_count, data_count, param_offset, offset; | |
4595 | ||
4596 | cFYI(1, ("In SetEOF")); | |
4597 | SetEOFRetry: | |
4598 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4599 | (void **) &pSMBr); | |
4600 | if (rc) | |
4601 | return rc; | |
4602 | ||
4603 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4604 | name_len = | |
b1a45695 | 4605 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4606 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4607 | name_len++; /* trailing null */ |
4608 | name_len *= 2; | |
3e87d803 | 4609 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4610 | name_len = strnlen(fileName, PATH_MAX); |
4611 | name_len++; /* trailing null */ | |
4612 | strncpy(pSMB->FileName, fileName, name_len); | |
4613 | } | |
4614 | params = 6 + name_len; | |
26f57364 | 4615 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4616 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4617 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4618 | pSMB->MaxSetupCount = 0; |
4619 | pSMB->Reserved = 0; | |
4620 | pSMB->Flags = 0; | |
4621 | pSMB->Timeout = 0; | |
4622 | pSMB->Reserved2 = 0; | |
4623 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4624 | InformationLevel) - 4; |
1da177e4 | 4625 | offset = param_offset + params; |
790fe579 | 4626 | if (SetAllocation) { |
50c2f753 SF |
4627 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4628 | pSMB->InformationLevel = | |
4629 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4630 | else | |
4631 | pSMB->InformationLevel = | |
4632 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4633 | } else /* Set File Size */ { | |
1da177e4 LT |
4634 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4635 | pSMB->InformationLevel = | |
50c2f753 | 4636 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4637 | else |
4638 | pSMB->InformationLevel = | |
50c2f753 | 4639 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4640 | } |
4641 | ||
4642 | parm_data = | |
4643 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4644 | offset); | |
4645 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4646 | pSMB->DataOffset = cpu_to_le16(offset); | |
4647 | pSMB->SetupCount = 1; | |
4648 | pSMB->Reserved3 = 0; | |
4649 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4650 | byte_count = 3 /* pad */ + params + data_count; | |
4651 | pSMB->DataCount = cpu_to_le16(data_count); | |
4652 | pSMB->TotalDataCount = pSMB->DataCount; | |
4653 | pSMB->ParameterCount = cpu_to_le16(params); | |
4654 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4655 | pSMB->Reserved4 = 0; | |
4656 | pSMB->hdr.smb_buf_length += byte_count; | |
4657 | parm_data->FileSize = cpu_to_le64(size); | |
4658 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4659 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4660 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4661 | if (rc) { | |
4662 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); | |
4663 | } | |
4664 | ||
4665 | cifs_buf_release(pSMB); | |
4666 | ||
4667 | if (rc == -EAGAIN) | |
4668 | goto SetEOFRetry; | |
4669 | ||
4670 | return rc; | |
4671 | } | |
4672 | ||
4673 | int | |
50c2f753 SF |
4674 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4675 | __u16 fid, __u32 pid_of_opener, int SetAllocation) | |
1da177e4 LT |
4676 | { |
4677 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4678 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
4679 | char *data_offset; | |
4680 | struct file_end_of_file_info *parm_data; | |
4681 | int rc = 0; | |
4682 | int bytes_returned = 0; | |
4683 | __u16 params, param_offset, offset, byte_count, count; | |
4684 | ||
4685 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
4686 | (long long)size)); | |
cd63499c SF |
4687 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4688 | ||
1da177e4 LT |
4689 | if (rc) |
4690 | return rc; | |
4691 | ||
cd63499c SF |
4692 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
4693 | ||
1da177e4 LT |
4694 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
4695 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4696 | |
1da177e4 LT |
4697 | params = 6; |
4698 | pSMB->MaxSetupCount = 0; | |
4699 | pSMB->Reserved = 0; | |
4700 | pSMB->Flags = 0; | |
4701 | pSMB->Timeout = 0; | |
4702 | pSMB->Reserved2 = 0; | |
4703 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4704 | offset = param_offset + params; | |
4705 | ||
50c2f753 | 4706 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 LT |
4707 | |
4708 | count = sizeof(struct file_end_of_file_info); | |
4709 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4710 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
4711 | pSMB->SetupCount = 1; | |
4712 | pSMB->Reserved3 = 0; | |
4713 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4714 | byte_count = 3 /* pad */ + params + count; | |
4715 | pSMB->DataCount = cpu_to_le16(count); | |
4716 | pSMB->ParameterCount = cpu_to_le16(params); | |
4717 | pSMB->TotalDataCount = pSMB->DataCount; | |
4718 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4719 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4720 | parm_data = | |
50c2f753 SF |
4721 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4722 | + offset); | |
1da177e4 LT |
4723 | pSMB->DataOffset = cpu_to_le16(offset); |
4724 | parm_data->FileSize = cpu_to_le64(size); | |
4725 | pSMB->Fid = fid; | |
790fe579 | 4726 | if (SetAllocation) { |
1da177e4 LT |
4727 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4728 | pSMB->InformationLevel = | |
4729 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4730 | else | |
4731 | pSMB->InformationLevel = | |
4732 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4733 | } else /* Set File Size */ { |
1da177e4 LT |
4734 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4735 | pSMB->InformationLevel = | |
50c2f753 | 4736 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4737 | else |
4738 | pSMB->InformationLevel = | |
50c2f753 | 4739 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4740 | } |
4741 | pSMB->Reserved4 = 0; | |
4742 | pSMB->hdr.smb_buf_length += byte_count; | |
4743 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4744 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4745 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4746 | if (rc) { | |
4747 | cFYI(1, | |
4748 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
4749 | rc)); | |
4750 | } | |
4751 | ||
4752 | if (pSMB) | |
cd63499c | 4753 | cifs_small_buf_release(pSMB); |
1da177e4 | 4754 | |
50c2f753 | 4755 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4756 | since file handle passed in no longer valid */ |
4757 | ||
4758 | return rc; | |
4759 | } | |
4760 | ||
50c2f753 | 4761 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4762 | an open handle, rather than by pathname - this is awkward due to |
4763 | potential access conflicts on the open, but it is unavoidable for these | |
4764 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4765 | time and resort to the original setpathinfo level which takes the ancient | |
4766 | DOS time format with 2 second granularity */ | |
4767 | int | |
50c2f753 SF |
4768 | CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, |
4769 | const FILE_BASIC_INFO *data, __u16 fid) | |
1da177e4 LT |
4770 | { |
4771 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4772 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
4773 | char *data_offset; | |
4774 | int rc = 0; | |
4775 | int bytes_returned = 0; | |
4776 | __u16 params, param_offset, offset, byte_count, count; | |
4777 | ||
4778 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
cd63499c SF |
4779 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4780 | ||
1da177e4 LT |
4781 | if (rc) |
4782 | return rc; | |
4783 | ||
cd63499c SF |
4784 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
4785 | ||
1da177e4 LT |
4786 | /* At this point there is no need to override the current pid |
4787 | with the pid of the opener, but that could change if we someday | |
4788 | use an existing handle (rather than opening one on the fly) */ | |
4789 | /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4790 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/ | |
50c2f753 | 4791 | |
1da177e4 LT |
4792 | params = 6; |
4793 | pSMB->MaxSetupCount = 0; | |
4794 | pSMB->Reserved = 0; | |
4795 | pSMB->Flags = 0; | |
4796 | pSMB->Timeout = 0; | |
4797 | pSMB->Reserved2 = 0; | |
4798 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4799 | offset = param_offset + params; | |
4800 | ||
50c2f753 | 4801 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 4802 | |
26f57364 | 4803 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 LT |
4804 | pSMB->MaxParameterCount = cpu_to_le16(2); |
4805 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
4806 | pSMB->SetupCount = 1; | |
4807 | pSMB->Reserved3 = 0; | |
4808 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4809 | byte_count = 3 /* pad */ + params + count; | |
4810 | pSMB->DataCount = cpu_to_le16(count); | |
4811 | pSMB->ParameterCount = cpu_to_le16(params); | |
4812 | pSMB->TotalDataCount = pSMB->DataCount; | |
4813 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4814 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4815 | pSMB->DataOffset = cpu_to_le16(offset); | |
4816 | pSMB->Fid = fid; | |
4817 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4818 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4819 | else | |
4820 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4821 | pSMB->Reserved4 = 0; | |
4822 | pSMB->hdr.smb_buf_length += byte_count; | |
4823 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 4824 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
4825 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4826 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4827 | if (rc) { | |
50c2f753 | 4828 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); |
1da177e4 LT |
4829 | } |
4830 | ||
cd63499c | 4831 | cifs_small_buf_release(pSMB); |
1da177e4 | 4832 | |
50c2f753 | 4833 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4834 | since file handle passed in no longer valid */ |
4835 | ||
4836 | return rc; | |
4837 | } | |
4838 | ||
4839 | ||
4840 | int | |
4841 | CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 | 4842 | const FILE_BASIC_INFO *data, |
737b758c | 4843 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4844 | { |
4845 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4846 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4847 | int name_len; | |
4848 | int rc = 0; | |
4849 | int bytes_returned = 0; | |
4850 | char *data_offset; | |
4851 | __u16 params, param_offset, offset, byte_count, count; | |
4852 | ||
4853 | cFYI(1, ("In SetTimes")); | |
4854 | ||
4855 | SetTimesRetry: | |
4856 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4857 | (void **) &pSMBr); | |
4858 | if (rc) | |
4859 | return rc; | |
4860 | ||
4861 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4862 | name_len = | |
b1a45695 | 4863 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4864 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4865 | name_len++; /* trailing null */ |
4866 | name_len *= 2; | |
50c2f753 | 4867 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4868 | name_len = strnlen(fileName, PATH_MAX); |
4869 | name_len++; /* trailing null */ | |
4870 | strncpy(pSMB->FileName, fileName, name_len); | |
4871 | } | |
4872 | ||
4873 | params = 6 + name_len; | |
26f57364 | 4874 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 LT |
4875 | pSMB->MaxParameterCount = cpu_to_le16(2); |
4876 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4877 | pSMB->MaxSetupCount = 0; | |
4878 | pSMB->Reserved = 0; | |
4879 | pSMB->Flags = 0; | |
4880 | pSMB->Timeout = 0; | |
4881 | pSMB->Reserved2 = 0; | |
4882 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4883 | InformationLevel) - 4; |
1da177e4 LT |
4884 | offset = param_offset + params; |
4885 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4886 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4887 | pSMB->DataOffset = cpu_to_le16(offset); | |
4888 | pSMB->SetupCount = 1; | |
4889 | pSMB->Reserved3 = 0; | |
4890 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4891 | byte_count = 3 /* pad */ + params + count; | |
4892 | ||
4893 | pSMB->DataCount = cpu_to_le16(count); | |
4894 | pSMB->ParameterCount = cpu_to_le16(params); | |
4895 | pSMB->TotalDataCount = pSMB->DataCount; | |
4896 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4897 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4898 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4899 | else | |
4900 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4901 | pSMB->Reserved4 = 0; | |
4902 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 4903 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
4904 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4905 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4906 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4907 | if (rc) { | |
4908 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); | |
4909 | } | |
4910 | ||
4911 | cifs_buf_release(pSMB); | |
4912 | ||
4913 | if (rc == -EAGAIN) | |
4914 | goto SetTimesRetry; | |
4915 | ||
4916 | return rc; | |
4917 | } | |
4918 | ||
4919 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
4920 | /* Can be used to set attributes */ | |
4921 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
4922 | handling it anyway and NT4 was what we thought it would be needed for | |
4923 | Do not delete it until we prove whether needed for Win9x though */ | |
4924 | int | |
4925 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
4926 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
4927 | { | |
4928 | SETATTR_REQ *pSMB = NULL; | |
4929 | SETATTR_RSP *pSMBr = NULL; | |
4930 | int rc = 0; | |
4931 | int bytes_returned; | |
4932 | int name_len; | |
4933 | ||
4934 | cFYI(1, ("In SetAttrLegacy")); | |
4935 | ||
4936 | SetAttrLgcyRetry: | |
4937 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
4938 | (void **) &pSMBr); | |
4939 | if (rc) | |
4940 | return rc; | |
4941 | ||
4942 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4943 | name_len = | |
50c2f753 | 4944 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
4945 | PATH_MAX, nls_codepage); |
4946 | name_len++; /* trailing null */ | |
4947 | name_len *= 2; | |
50c2f753 | 4948 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4949 | name_len = strnlen(fileName, PATH_MAX); |
4950 | name_len++; /* trailing null */ | |
4951 | strncpy(pSMB->fileName, fileName, name_len); | |
4952 | } | |
4953 | pSMB->attr = cpu_to_le16(dos_attrs); | |
4954 | pSMB->BufferFormat = 0x04; | |
4955 | pSMB->hdr.smb_buf_length += name_len + 1; | |
4956 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
4957 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4958 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4959 | if (rc) { | |
4960 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); | |
4961 | } | |
4962 | ||
4963 | cifs_buf_release(pSMB); | |
4964 | ||
4965 | if (rc == -EAGAIN) | |
4966 | goto SetAttrLgcyRetry; | |
4967 | ||
4968 | return rc; | |
4969 | } | |
4970 | #endif /* temporarily unneeded SetAttr legacy function */ | |
4971 | ||
4972 | int | |
4973 | CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
4974 | char *fileName, __u64 mode, __u64 uid, __u64 gid, |
4975 | dev_t device, const struct nls_table *nls_codepage, | |
737b758c | 4976 | int remap) |
1da177e4 LT |
4977 | { |
4978 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4979 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4980 | int name_len; | |
4981 | int rc = 0; | |
4982 | int bytes_returned = 0; | |
4983 | FILE_UNIX_BASIC_INFO *data_offset; | |
4984 | __u16 params, param_offset, offset, count, byte_count; | |
4985 | ||
4986 | cFYI(1, ("In SetUID/GID/Mode")); | |
4987 | setPermsRetry: | |
4988 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4989 | (void **) &pSMBr); | |
4990 | if (rc) | |
4991 | return rc; | |
4992 | ||
4993 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4994 | name_len = | |
50c2f753 | 4995 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4996 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4997 | name_len++; /* trailing null */ |
4998 | name_len *= 2; | |
3e87d803 | 4999 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5000 | name_len = strnlen(fileName, PATH_MAX); |
5001 | name_len++; /* trailing null */ | |
5002 | strncpy(pSMB->FileName, fileName, name_len); | |
5003 | } | |
5004 | ||
5005 | params = 6 + name_len; | |
26f57364 | 5006 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 LT |
5007 | pSMB->MaxParameterCount = cpu_to_le16(2); |
5008 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
5009 | pSMB->MaxSetupCount = 0; | |
5010 | pSMB->Reserved = 0; | |
5011 | pSMB->Flags = 0; | |
5012 | pSMB->Timeout = 0; | |
5013 | pSMB->Reserved2 = 0; | |
5014 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5015 | InformationLevel) - 4; |
1da177e4 LT |
5016 | offset = param_offset + params; |
5017 | data_offset = | |
5018 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5019 | offset); | |
5020 | memset(data_offset, 0, count); | |
5021 | pSMB->DataOffset = cpu_to_le16(offset); | |
5022 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5023 | pSMB->SetupCount = 1; | |
5024 | pSMB->Reserved3 = 0; | |
5025 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5026 | byte_count = 3 /* pad */ + params + count; | |
5027 | pSMB->ParameterCount = cpu_to_le16(params); | |
5028 | pSMB->DataCount = cpu_to_le16(count); | |
5029 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5030 | pSMB->TotalDataCount = pSMB->DataCount; | |
5031 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5032 | pSMB->Reserved4 = 0; | |
5033 | pSMB->hdr.smb_buf_length += byte_count; | |
c7af1857 SF |
5034 | /* Samba server ignores set of file size to zero due to bugs in some |
5035 | older clients, but we should be precise - we use SetFileSize to | |
5036 | set file size and do not want to truncate file size to zero | |
5037 | accidently as happened on one Samba server beta by putting | |
50c2f753 | 5038 | zero instead of -1 here */ |
c7af1857 SF |
5039 | data_offset->EndOfFile = NO_CHANGE_64; |
5040 | data_offset->NumOfBytes = NO_CHANGE_64; | |
5041 | data_offset->LastStatusChange = NO_CHANGE_64; | |
5042 | data_offset->LastAccessTime = NO_CHANGE_64; | |
5043 | data_offset->LastModificationTime = NO_CHANGE_64; | |
1da177e4 LT |
5044 | data_offset->Uid = cpu_to_le64(uid); |
5045 | data_offset->Gid = cpu_to_le64(gid); | |
5046 | /* better to leave device as zero when it is */ | |
5047 | data_offset->DevMajor = cpu_to_le64(MAJOR(device)); | |
5048 | data_offset->DevMinor = cpu_to_le64(MINOR(device)); | |
5049 | data_offset->Permissions = cpu_to_le64(mode); | |
50c2f753 | 5050 | |
790fe579 | 5051 | if (S_ISREG(mode)) |
1da177e4 | 5052 | data_offset->Type = cpu_to_le32(UNIX_FILE); |
790fe579 | 5053 | else if (S_ISDIR(mode)) |
1da177e4 | 5054 | data_offset->Type = cpu_to_le32(UNIX_DIR); |
790fe579 | 5055 | else if (S_ISLNK(mode)) |
1da177e4 | 5056 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); |
790fe579 | 5057 | else if (S_ISCHR(mode)) |
1da177e4 | 5058 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); |
790fe579 | 5059 | else if (S_ISBLK(mode)) |
1da177e4 | 5060 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); |
790fe579 | 5061 | else if (S_ISFIFO(mode)) |
1da177e4 | 5062 | data_offset->Type = cpu_to_le32(UNIX_FIFO); |
790fe579 | 5063 | else if (S_ISSOCK(mode)) |
1da177e4 LT |
5064 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); |
5065 | ||
5066 | ||
5067 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5068 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5069 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5070 | if (rc) { | |
5071 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); | |
5072 | } | |
5073 | ||
5074 | if (pSMB) | |
5075 | cifs_buf_release(pSMB); | |
5076 | if (rc == -EAGAIN) | |
5077 | goto setPermsRetry; | |
5078 | return rc; | |
5079 | } | |
5080 | ||
50c2f753 | 5081 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
167a251a | 5082 | const int notify_subdirs, const __u16 netfid, |
50c2f753 | 5083 | __u32 filter, struct file *pfile, int multishot, |
167a251a | 5084 | const struct nls_table *nls_codepage) |
1da177e4 LT |
5085 | { |
5086 | int rc = 0; | |
50c2f753 SF |
5087 | struct smb_com_transaction_change_notify_req *pSMB = NULL; |
5088 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
abb15b8a | 5089 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
5090 | int bytes_returned; |
5091 | ||
50c2f753 | 5092 | cFYI(1, ("In CIFSSMBNotify for file handle %d", (int)netfid)); |
1da177e4 | 5093 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
50c2f753 | 5094 | (void **) &pSMBr); |
1da177e4 LT |
5095 | if (rc) |
5096 | return rc; | |
5097 | ||
5098 | pSMB->TotalParameterCount = 0 ; | |
5099 | pSMB->TotalDataCount = 0; | |
5100 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5101 | /* BB find exact data count max from sess structure BB */ | |
5102 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
5103 | /* BB VERIFY verify which is correct for above BB */ |
5104 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5105 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5106 | ||
1da177e4 LT |
5107 | pSMB->MaxSetupCount = 4; |
5108 | pSMB->Reserved = 0; | |
5109 | pSMB->ParameterOffset = 0; | |
5110 | pSMB->DataCount = 0; | |
5111 | pSMB->DataOffset = 0; | |
5112 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5113 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5114 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 5115 | if (notify_subdirs) |
1da177e4 LT |
5116 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
5117 | pSMB->Reserved2 = 0; | |
5118 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5119 | pSMB->Fid = netfid; /* file handle always le */ | |
5120 | pSMB->ByteCount = 0; | |
5121 | ||
5122 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5123 | (struct smb_hdr *) pSMBr, &bytes_returned, -1); | |
5124 | if (rc) { | |
5125 | cFYI(1, ("Error in Notify = %d", rc)); | |
ff5dbd9e SF |
5126 | } else { |
5127 | /* Add file to outstanding requests */ | |
50c2f753 | 5128 | /* BB change to kmem cache alloc */ |
5cbded58 | 5129 | dnotify_req = kmalloc( |
47c786e7 SF |
5130 | sizeof(struct dir_notify_req), |
5131 | GFP_KERNEL); | |
790fe579 | 5132 | if (dnotify_req) { |
47c786e7 SF |
5133 | dnotify_req->Pid = pSMB->hdr.Pid; |
5134 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5135 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5136 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5137 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5138 | dnotify_req->netfid = netfid; | |
5139 | dnotify_req->pfile = pfile; | |
5140 | dnotify_req->filter = filter; | |
5141 | dnotify_req->multishot = multishot; | |
5142 | spin_lock(&GlobalMid_Lock); | |
50c2f753 | 5143 | list_add_tail(&dnotify_req->lhead, |
47c786e7 SF |
5144 | &GlobalDnotifyReqList); |
5145 | spin_unlock(&GlobalMid_Lock); | |
50c2f753 | 5146 | } else |
47c786e7 | 5147 | rc = -ENOMEM; |
1da177e4 LT |
5148 | } |
5149 | cifs_buf_release(pSMB); | |
50c2f753 | 5150 | return rc; |
1da177e4 LT |
5151 | } |
5152 | #ifdef CONFIG_CIFS_XATTR | |
5153 | ssize_t | |
5154 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
5155 | const unsigned char *searchName, | |
50c2f753 | 5156 | char *EAData, size_t buf_size, |
737b758c | 5157 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5158 | { |
5159 | /* BB assumes one setup word */ | |
5160 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5161 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5162 | int rc = 0; | |
5163 | int bytes_returned; | |
5164 | int name_len; | |
50c2f753 SF |
5165 | struct fea *temp_fea; |
5166 | char *temp_ptr; | |
1da177e4 LT |
5167 | __u16 params, byte_count; |
5168 | ||
5169 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
5170 | QAllEAsRetry: | |
5171 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5172 | (void **) &pSMBr); | |
5173 | if (rc) | |
5174 | return rc; | |
5175 | ||
5176 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5177 | name_len = | |
50c2f753 | 5178 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5179 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5180 | name_len++; /* trailing null */ |
5181 | name_len *= 2; | |
5182 | } else { /* BB improve the check for buffer overruns BB */ | |
5183 | name_len = strnlen(searchName, PATH_MAX); | |
5184 | name_len++; /* trailing null */ | |
5185 | strncpy(pSMB->FileName, searchName, name_len); | |
5186 | } | |
5187 | ||
50c2f753 | 5188 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
5189 | pSMB->TotalDataCount = 0; |
5190 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5191 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
5192 | pSMB->MaxSetupCount = 0; | |
5193 | pSMB->Reserved = 0; | |
5194 | pSMB->Flags = 0; | |
5195 | pSMB->Timeout = 0; | |
5196 | pSMB->Reserved2 = 0; | |
5197 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5198 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5199 | pSMB->DataCount = 0; |
5200 | pSMB->DataOffset = 0; | |
5201 | pSMB->SetupCount = 1; | |
5202 | pSMB->Reserved3 = 0; | |
5203 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5204 | byte_count = params + 1 /* pad */ ; | |
5205 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5206 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5207 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5208 | pSMB->Reserved4 = 0; | |
5209 | pSMB->hdr.smb_buf_length += byte_count; | |
5210 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5211 | ||
5212 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5213 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5214 | if (rc) { | |
5215 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
5216 | } else { /* decode response */ | |
5217 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5218 | ||
5219 | /* BB also check enough total bytes returned */ | |
5220 | /* BB we need to improve the validity checking | |
5221 | of these trans2 responses */ | |
50c2f753 | 5222 | if (rc || (pSMBr->ByteCount < 4)) |
1da177e4 LT |
5223 | rc = -EIO; /* bad smb */ |
5224 | /* else if (pFindData){ | |
5225 | memcpy((char *) pFindData, | |
5226 | (char *) &pSMBr->hdr.Protocol + | |
5227 | data_offset, kl); | |
5228 | }*/ else { | |
5229 | /* check that length of list is not more than bcc */ | |
5230 | /* check that each entry does not go beyond length | |
5231 | of list */ | |
5232 | /* check that each element of each entry does not | |
5233 | go beyond end of list */ | |
5234 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 5235 | struct fealist *ea_response_data; |
1da177e4 LT |
5236 | rc = 0; |
5237 | /* validate_trans2_offsets() */ | |
790fe579 | 5238 | /* BB check if start of smb + data_offset > &bcc+ bcc */ |
1da177e4 LT |
5239 | ea_response_data = (struct fealist *) |
5240 | (((char *) &pSMBr->hdr.Protocol) + | |
5241 | data_offset); | |
5242 | name_len = le32_to_cpu(ea_response_data->list_len); | |
50c2f753 | 5243 | cFYI(1, ("ea length %d", name_len)); |
790fe579 | 5244 | if (name_len <= 8) { |
1da177e4 | 5245 | /* returned EA size zeroed at top of function */ |
50c2f753 | 5246 | cFYI(1, ("empty EA list returned from server")); |
1da177e4 LT |
5247 | } else { |
5248 | /* account for ea list len */ | |
5249 | name_len -= 4; | |
5250 | temp_fea = ea_response_data->list; | |
5251 | temp_ptr = (char *)temp_fea; | |
50c2f753 | 5252 | while (name_len > 0) { |
1da177e4 LT |
5253 | __u16 value_len; |
5254 | name_len -= 4; | |
5255 | temp_ptr += 4; | |
5256 | rc += temp_fea->name_len; | |
5257 | /* account for prefix user. and trailing null */ | |
790fe579 SF |
5258 | rc = rc + 5 + 1; |
5259 | if (rc < (int)buf_size) { | |
50c2f753 SF |
5260 | memcpy(EAData, "user.", 5); |
5261 | EAData += 5; | |
5262 | memcpy(EAData, temp_ptr, | |
5263 | temp_fea->name_len); | |
5264 | EAData += temp_fea->name_len; | |
1da177e4 LT |
5265 | /* null terminate name */ |
5266 | *EAData = 0; | |
5267 | EAData = EAData + 1; | |
790fe579 | 5268 | } else if (buf_size == 0) { |
1da177e4 LT |
5269 | /* skip copy - calc size only */ |
5270 | } else { | |
5271 | /* stop before overrun buffer */ | |
5272 | rc = -ERANGE; | |
5273 | break; | |
5274 | } | |
5275 | name_len -= temp_fea->name_len; | |
5276 | temp_ptr += temp_fea->name_len; | |
5277 | /* account for trailing null */ | |
5278 | name_len--; | |
5279 | temp_ptr++; | |
50c2f753 SF |
5280 | value_len = |
5281 | le16_to_cpu(temp_fea->value_len); | |
1da177e4 LT |
5282 | name_len -= value_len; |
5283 | temp_ptr += value_len; | |
50c2f753 SF |
5284 | /* BB check that temp_ptr is still |
5285 | within the SMB BB*/ | |
5286 | ||
5287 | /* no trailing null to account for | |
5288 | in value len */ | |
1da177e4 LT |
5289 | /* go on to next EA */ |
5290 | temp_fea = (struct fea *)temp_ptr; | |
5291 | } | |
5292 | } | |
5293 | } | |
5294 | } | |
5295 | if (pSMB) | |
5296 | cifs_buf_release(pSMB); | |
5297 | if (rc == -EAGAIN) | |
5298 | goto QAllEAsRetry; | |
5299 | ||
5300 | return (ssize_t)rc; | |
5301 | } | |
5302 | ||
50c2f753 SF |
5303 | ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon, |
5304 | const unsigned char *searchName, const unsigned char *ea_name, | |
5305 | unsigned char *ea_value, size_t buf_size, | |
737b758c | 5306 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5307 | { |
5308 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5309 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5310 | int rc = 0; | |
5311 | int bytes_returned; | |
5312 | int name_len; | |
50c2f753 SF |
5313 | struct fea *temp_fea; |
5314 | char *temp_ptr; | |
1da177e4 LT |
5315 | __u16 params, byte_count; |
5316 | ||
5317 | cFYI(1, ("In Query EA path %s", searchName)); | |
5318 | QEARetry: | |
5319 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5320 | (void **) &pSMBr); | |
5321 | if (rc) | |
5322 | return rc; | |
5323 | ||
5324 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5325 | name_len = | |
50c2f753 | 5326 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5327 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5328 | name_len++; /* trailing null */ |
5329 | name_len *= 2; | |
5330 | } else { /* BB improve the check for buffer overruns BB */ | |
5331 | name_len = strnlen(searchName, PATH_MAX); | |
5332 | name_len++; /* trailing null */ | |
5333 | strncpy(pSMB->FileName, searchName, name_len); | |
5334 | } | |
5335 | ||
50c2f753 | 5336 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
5337 | pSMB->TotalDataCount = 0; |
5338 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5339 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
5340 | pSMB->MaxSetupCount = 0; | |
5341 | pSMB->Reserved = 0; | |
5342 | pSMB->Flags = 0; | |
5343 | pSMB->Timeout = 0; | |
5344 | pSMB->Reserved2 = 0; | |
5345 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5346 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5347 | pSMB->DataCount = 0; |
5348 | pSMB->DataOffset = 0; | |
5349 | pSMB->SetupCount = 1; | |
5350 | pSMB->Reserved3 = 0; | |
5351 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5352 | byte_count = params + 1 /* pad */ ; | |
5353 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5354 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5355 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5356 | pSMB->Reserved4 = 0; | |
5357 | pSMB->hdr.smb_buf_length += byte_count; | |
5358 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5359 | ||
5360 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5361 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5362 | if (rc) { | |
5363 | cFYI(1, ("Send error in Query EA = %d", rc)); | |
5364 | } else { /* decode response */ | |
5365 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5366 | ||
5367 | /* BB also check enough total bytes returned */ | |
5368 | /* BB we need to improve the validity checking | |
5369 | of these trans2 responses */ | |
50c2f753 | 5370 | if (rc || (pSMBr->ByteCount < 4)) |
1da177e4 LT |
5371 | rc = -EIO; /* bad smb */ |
5372 | /* else if (pFindData){ | |
5373 | memcpy((char *) pFindData, | |
5374 | (char *) &pSMBr->hdr.Protocol + | |
5375 | data_offset, kl); | |
5376 | }*/ else { | |
5377 | /* check that length of list is not more than bcc */ | |
5378 | /* check that each entry does not go beyond length | |
5379 | of list */ | |
5380 | /* check that each element of each entry does not | |
5381 | go beyond end of list */ | |
5382 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 5383 | struct fealist *ea_response_data; |
1da177e4 LT |
5384 | rc = -ENODATA; |
5385 | /* validate_trans2_offsets() */ | |
790fe579 | 5386 | /* BB check if start of smb + data_offset > &bcc+ bcc*/ |
1da177e4 LT |
5387 | ea_response_data = (struct fealist *) |
5388 | (((char *) &pSMBr->hdr.Protocol) + | |
5389 | data_offset); | |
5390 | name_len = le32_to_cpu(ea_response_data->list_len); | |
50c2f753 | 5391 | cFYI(1, ("ea length %d", name_len)); |
790fe579 | 5392 | if (name_len <= 8) { |
1da177e4 | 5393 | /* returned EA size zeroed at top of function */ |
50c2f753 | 5394 | cFYI(1, ("empty EA list returned from server")); |
1da177e4 LT |
5395 | } else { |
5396 | /* account for ea list len */ | |
5397 | name_len -= 4; | |
5398 | temp_fea = ea_response_data->list; | |
5399 | temp_ptr = (char *)temp_fea; | |
5400 | /* loop through checking if we have a matching | |
5401 | name and then return the associated value */ | |
50c2f753 | 5402 | while (name_len > 0) { |
1da177e4 LT |
5403 | __u16 value_len; |
5404 | name_len -= 4; | |
5405 | temp_ptr += 4; | |
50c2f753 SF |
5406 | value_len = |
5407 | le16_to_cpu(temp_fea->value_len); | |
5408 | /* BB validate that value_len falls within SMB, | |
5409 | even though maximum for name_len is 255 */ | |
790fe579 | 5410 | if (memcmp(temp_fea->name, ea_name, |
1da177e4 LT |
5411 | temp_fea->name_len) == 0) { |
5412 | /* found a match */ | |
5413 | rc = value_len; | |
5414 | /* account for prefix user. and trailing null */ | |
790fe579 | 5415 | if (rc <= (int)buf_size) { |
1da177e4 LT |
5416 | memcpy(ea_value, |
5417 | temp_fea->name+temp_fea->name_len+1, | |
5418 | rc); | |
50c2f753 SF |
5419 | /* ea values, unlike ea |
5420 | names, are not null | |
5421 | terminated */ | |
790fe579 | 5422 | } else if (buf_size == 0) { |
1da177e4 LT |
5423 | /* skip copy - calc size only */ |
5424 | } else { | |
50c2f753 | 5425 | /* stop before overrun buffer */ |
1da177e4 LT |
5426 | rc = -ERANGE; |
5427 | } | |
5428 | break; | |
5429 | } | |
5430 | name_len -= temp_fea->name_len; | |
5431 | temp_ptr += temp_fea->name_len; | |
5432 | /* account for trailing null */ | |
5433 | name_len--; | |
5434 | temp_ptr++; | |
5435 | name_len -= value_len; | |
5436 | temp_ptr += value_len; | |
50c2f753 SF |
5437 | /* No trailing null to account for in |
5438 | value_len. Go on to next EA */ | |
1da177e4 LT |
5439 | temp_fea = (struct fea *)temp_ptr; |
5440 | } | |
50c2f753 | 5441 | } |
1da177e4 LT |
5442 | } |
5443 | } | |
5444 | if (pSMB) | |
5445 | cifs_buf_release(pSMB); | |
5446 | if (rc == -EAGAIN) | |
5447 | goto QEARetry; | |
5448 | ||
5449 | return (ssize_t)rc; | |
5450 | } | |
5451 | ||
5452 | int | |
5453 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5454 | const char *ea_name, const void *ea_value, |
5455 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5456 | int remap) | |
1da177e4 LT |
5457 | { |
5458 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5459 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5460 | struct fealist *parm_data; | |
5461 | int name_len; | |
5462 | int rc = 0; | |
5463 | int bytes_returned = 0; | |
5464 | __u16 params, param_offset, byte_count, offset, count; | |
5465 | ||
5466 | cFYI(1, ("In SetEA")); | |
5467 | SetEARetry: | |
5468 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5469 | (void **) &pSMBr); | |
5470 | if (rc) | |
5471 | return rc; | |
5472 | ||
5473 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5474 | name_len = | |
50c2f753 | 5475 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5476 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5477 | name_len++; /* trailing null */ |
5478 | name_len *= 2; | |
50c2f753 | 5479 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5480 | name_len = strnlen(fileName, PATH_MAX); |
5481 | name_len++; /* trailing null */ | |
5482 | strncpy(pSMB->FileName, fileName, name_len); | |
5483 | } | |
5484 | ||
5485 | params = 6 + name_len; | |
5486 | ||
5487 | /* done calculating parms using name_len of file name, | |
5488 | now use name_len to calculate length of ea name | |
5489 | we are going to create in the inode xattrs */ | |
790fe579 | 5490 | if (ea_name == NULL) |
1da177e4 LT |
5491 | name_len = 0; |
5492 | else | |
50c2f753 | 5493 | name_len = strnlen(ea_name, 255); |
1da177e4 LT |
5494 | |
5495 | count = sizeof(*parm_data) + ea_value_len + name_len + 1; | |
5496 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5497 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
5498 | pSMB->MaxSetupCount = 0; | |
5499 | pSMB->Reserved = 0; | |
5500 | pSMB->Flags = 0; | |
5501 | pSMB->Timeout = 0; | |
5502 | pSMB->Reserved2 = 0; | |
5503 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5504 | InformationLevel) - 4; |
1da177e4 LT |
5505 | offset = param_offset + params; |
5506 | pSMB->InformationLevel = | |
5507 | cpu_to_le16(SMB_SET_FILE_EA); | |
5508 | ||
5509 | parm_data = | |
5510 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5511 | offset); | |
5512 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5513 | pSMB->DataOffset = cpu_to_le16(offset); | |
5514 | pSMB->SetupCount = 1; | |
5515 | pSMB->Reserved3 = 0; | |
5516 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5517 | byte_count = 3 /* pad */ + params + count; | |
5518 | pSMB->DataCount = cpu_to_le16(count); | |
5519 | parm_data->list_len = cpu_to_le32(count); | |
5520 | parm_data->list[0].EA_flags = 0; | |
5521 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5522 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5523 | /* EA names are always ASCII */ |
790fe579 | 5524 | if (ea_name) |
50c2f753 | 5525 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5526 | parm_data->list[0].name[name_len] = 0; |
5527 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5528 | /* caller ensures that ea_value_len is less than 64K but | |
5529 | we need to ensure that it fits within the smb */ | |
5530 | ||
50c2f753 SF |
5531 | /*BB add length check to see if it would fit in |
5532 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5533 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5534 | if (ea_value_len) | |
50c2f753 SF |
5535 | memcpy(parm_data->list[0].name+name_len+1, |
5536 | ea_value, ea_value_len); | |
1da177e4 LT |
5537 | |
5538 | pSMB->TotalDataCount = pSMB->DataCount; | |
5539 | pSMB->ParameterCount = cpu_to_le16(params); | |
5540 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5541 | pSMB->Reserved4 = 0; | |
5542 | pSMB->hdr.smb_buf_length += byte_count; | |
5543 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5544 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5545 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5546 | if (rc) { | |
5547 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); | |
5548 | } | |
5549 | ||
5550 | cifs_buf_release(pSMB); | |
5551 | ||
5552 | if (rc == -EAGAIN) | |
5553 | goto SetEARetry; | |
5554 | ||
5555 | return rc; | |
5556 | } | |
5557 | ||
5558 | #endif |