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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
aa24d1e9 PS |
89 | /* |
90 | * Mark as invalid, all open files on tree connections since they | |
91 | * were closed when session to server was lost. | |
92 | */ | |
93 | void | |
94 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 | 99 | |
aa24d1e9 | 100 | /* list all files open on tree connection and mark them invalid */ |
4477288a | 101 | spin_lock(&cifs_file_list_lock); |
aa24d1e9 | 102 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 103 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 104 | open_file->invalidHandle = true; |
3bc303c2 | 105 | open_file->oplock_break_cancelled = true; |
1da177e4 | 106 | } |
4477288a | 107 | spin_unlock(&cifs_file_list_lock); |
aa24d1e9 PS |
108 | /* |
109 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
110 | * to this tcon. | |
111 | */ | |
1da177e4 LT |
112 | } |
113 | ||
9162ab20 JL |
114 | /* reconnect the socket, tcon, and smb session if needed */ |
115 | static int | |
96daf2b0 | 116 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 117 | { |
c4a5534a | 118 | int rc; |
96daf2b0 | 119 | struct cifs_ses *ses; |
9162ab20 JL |
120 | struct TCP_Server_Info *server; |
121 | struct nls_table *nls_codepage; | |
122 | ||
123 | /* | |
124 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
125 | * tcp and smb session status done differently for those three - in the | |
126 | * calling routine | |
127 | */ | |
128 | if (!tcon) | |
129 | return 0; | |
130 | ||
131 | ses = tcon->ses; | |
132 | server = ses->server; | |
133 | ||
134 | /* | |
135 | * only tree disconnect, open, and write, (and ulogoff which does not | |
136 | * have tcon) are allowed as we start force umount | |
137 | */ | |
138 | if (tcon->tidStatus == CifsExiting) { | |
139 | if (smb_command != SMB_COM_WRITE_ANDX && | |
140 | smb_command != SMB_COM_OPEN_ANDX && | |
141 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
142 | cFYI(1, "can not send cmd %d while umounting", |
143 | smb_command); | |
9162ab20 JL |
144 | return -ENODEV; |
145 | } | |
146 | } | |
147 | ||
9162ab20 JL |
148 | /* |
149 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
150 | * greater than cifs socket timeout which is 7 seconds | |
151 | */ | |
152 | while (server->tcpStatus == CifsNeedReconnect) { | |
153 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 154 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 155 | |
fd88ce93 | 156 | /* are we still trying to reconnect? */ |
9162ab20 JL |
157 | if (server->tcpStatus != CifsNeedReconnect) |
158 | break; | |
159 | ||
160 | /* | |
161 | * on "soft" mounts we wait once. Hard mounts keep | |
162 | * retrying until process is killed or server comes | |
163 | * back on-line | |
164 | */ | |
d402539b | 165 | if (!tcon->retry) { |
b6b38f70 | 166 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
167 | return -EHOSTDOWN; |
168 | } | |
169 | } | |
170 | ||
171 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
172 | return 0; | |
173 | ||
174 | nls_codepage = load_nls_default(); | |
175 | ||
176 | /* | |
177 | * need to prevent multiple threads trying to simultaneously | |
178 | * reconnect the same SMB session | |
179 | */ | |
d7b619cf | 180 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
181 | rc = cifs_negotiate_protocol(0, ses); |
182 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
183 | rc = cifs_setup_session(0, ses, nls_codepage); |
184 | ||
185 | /* do we need to reconnect tcon? */ | |
186 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
188 | goto out; |
189 | } | |
190 | ||
aa24d1e9 | 191 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 192 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 193 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 194 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
195 | |
196 | if (rc) | |
197 | goto out; | |
198 | ||
199 | /* | |
200 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
201 | * size shrinking | |
202 | */ | |
203 | atomic_inc(&tconInfoReconnectCount); | |
204 | ||
205 | /* tell server Unix caps we support */ | |
206 | if (ses->capabilities & CAP_UNIX) | |
207 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
208 | ||
209 | /* | |
210 | * Removed call to reopen open files here. It is safer (and faster) to | |
211 | * reopen files one at a time as needed in read and write. | |
212 | * | |
213 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
214 | */ | |
215 | ||
216 | out: | |
217 | /* | |
218 | * Check if handle based operation so we know whether we can continue | |
219 | * or not without returning to caller to reset file handle | |
220 | */ | |
221 | switch (smb_command) { | |
222 | case SMB_COM_READ_ANDX: | |
223 | case SMB_COM_WRITE_ANDX: | |
224 | case SMB_COM_CLOSE: | |
225 | case SMB_COM_FIND_CLOSE2: | |
226 | case SMB_COM_LOCKING_ANDX: | |
227 | rc = -EAGAIN; | |
228 | } | |
229 | ||
230 | unload_nls(nls_codepage); | |
231 | return rc; | |
232 | } | |
233 | ||
ad7a2926 SF |
234 | /* Allocate and return pointer to an SMB request buffer, and set basic |
235 | SMB information in the SMB header. If the return code is zero, this | |
236 | function must have filled in request_buf pointer */ | |
1da177e4 | 237 | static int |
96daf2b0 | 238 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 239 | void **request_buf) |
1da177e4 | 240 | { |
f569599a | 241 | int rc; |
1da177e4 | 242 | |
9162ab20 | 243 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 244 | if (rc) |
1da177e4 LT |
245 | return rc; |
246 | ||
247 | *request_buf = cifs_small_buf_get(); | |
248 | if (*request_buf == NULL) { | |
249 | /* BB should we add a retry in here if not a writepage? */ | |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
63135e08 | 253 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 254 | tcon, wct); |
1da177e4 | 255 | |
790fe579 SF |
256 | if (tcon != NULL) |
257 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 258 | |
f569599a | 259 | return 0; |
5815449d SF |
260 | } |
261 | ||
12b3b8ff | 262 | int |
50c2f753 | 263 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 264 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
265 | { |
266 | int rc; | |
50c2f753 | 267 | struct smb_hdr *buffer; |
12b3b8ff | 268 | |
5815449d | 269 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 270 | if (rc) |
12b3b8ff SF |
271 | return rc; |
272 | ||
04fdabe1 | 273 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 274 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
275 | if (ses->capabilities & CAP_UNICODE) |
276 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 277 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
278 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
279 | ||
280 | /* uid, tid can stay at zero as set in header assemble */ | |
281 | ||
50c2f753 | 282 | /* BB add support for turning on the signing when |
12b3b8ff SF |
283 | this function is used after 1st of session setup requests */ |
284 | ||
285 | return rc; | |
286 | } | |
1da177e4 LT |
287 | |
288 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
289 | static int | |
96daf2b0 | 290 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 291 | void **request_buf, void **response_buf) |
1da177e4 | 292 | { |
1da177e4 LT |
293 | *request_buf = cifs_buf_get(); |
294 | if (*request_buf == NULL) { | |
295 | /* BB should we add a retry in here if not a writepage? */ | |
296 | return -ENOMEM; | |
297 | } | |
298 | /* Although the original thought was we needed the response buf for */ | |
299 | /* potential retries of smb operations it turns out we can determine */ | |
300 | /* from the mid flags when the request buffer can be resent without */ | |
301 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 302 | if (response_buf) |
50c2f753 | 303 | *response_buf = *request_buf; |
1da177e4 LT |
304 | |
305 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 306 | wct); |
1da177e4 | 307 | |
790fe579 SF |
308 | if (tcon != NULL) |
309 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 310 | |
f569599a JL |
311 | return 0; |
312 | } | |
313 | ||
314 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
315 | static int | |
96daf2b0 | 316 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
317 | void **request_buf, void **response_buf) |
318 | { | |
319 | int rc; | |
320 | ||
321 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
322 | if (rc) | |
323 | return rc; | |
324 | ||
325 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
326 | } | |
327 | ||
328 | static int | |
96daf2b0 | 329 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
330 | void **request_buf, void **response_buf) |
331 | { | |
332 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
333 | return -EHOSTDOWN; | |
334 | ||
335 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
336 | } |
337 | ||
50c2f753 | 338 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 339 | { |
12df83c9 JL |
340 | unsigned int total_size; |
341 | ||
342 | /* check for plausible wct */ | |
343 | if (pSMB->hdr.WordCount < 10) | |
344 | goto vt2_err; | |
1da177e4 | 345 | |
1da177e4 | 346 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
347 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
348 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
349 | goto vt2_err; | |
350 | ||
12df83c9 JL |
351 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
352 | if (total_size >= 512) | |
353 | goto vt2_err; | |
354 | ||
fd5707e1 JL |
355 | /* check that bcc is at least as big as parms + data, and that it is |
356 | * less than negotiated smb buffer | |
357 | */ | |
12df83c9 JL |
358 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
359 | if (total_size > get_bcc(&pSMB->hdr) || | |
360 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
361 | goto vt2_err; | |
362 | ||
363 | return 0; | |
364 | vt2_err: | |
50c2f753 | 365 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 366 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 367 | return -EINVAL; |
1da177e4 | 368 | } |
690c522f | 369 | |
1da177e4 | 370 | int |
286170aa | 371 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
372 | { |
373 | NEGOTIATE_REQ *pSMB; | |
374 | NEGOTIATE_RSP *pSMBr; | |
375 | int rc = 0; | |
376 | int bytes_returned; | |
3979877e | 377 | int i; |
50c2f753 | 378 | struct TCP_Server_Info *server; |
1da177e4 | 379 | u16 count; |
750d1151 | 380 | unsigned int secFlags; |
1da177e4 | 381 | |
790fe579 | 382 | if (ses->server) |
1da177e4 LT |
383 | server = ses->server; |
384 | else { | |
385 | rc = -EIO; | |
386 | return rc; | |
387 | } | |
388 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
389 | (void **) &pSMB, (void **) &pSMBr); | |
390 | if (rc) | |
391 | return rc; | |
750d1151 SF |
392 | |
393 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 394 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 395 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 396 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 397 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 398 | |
b6b38f70 | 399 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 400 | |
88257360 | 401 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 402 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 403 | |
100c1ddc | 404 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 405 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 406 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 407 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 408 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 409 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
410 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
411 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 412 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
413 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
414 | } | |
50c2f753 | 415 | |
3979877e | 416 | count = 0; |
50c2f753 | 417 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
418 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
419 | count += strlen(protocols[i].name) + 1; | |
420 | /* null at end of source and target buffers anyway */ | |
421 | } | |
be8e3b00 | 422 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
423 | pSMB->ByteCount = cpu_to_le16(count); |
424 | ||
425 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
426 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 427 | if (rc != 0) |
254e55ed SF |
428 | goto neg_err_exit; |
429 | ||
9bf67e51 JL |
430 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
431 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 432 | /* Check wct = 1 error case */ |
9bf67e51 | 433 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 434 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 435 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
436 | could not negotiate a common dialect */ |
437 | rc = -EOPNOTSUPP; | |
438 | goto neg_err_exit; | |
50c2f753 | 439 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 440 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
441 | && ((server->dialect == LANMAN_PROT) |
442 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 443 | __s16 tmp; |
50c2f753 | 444 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 445 | |
790fe579 | 446 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 447 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
448 | server->secType = LANMAN; |
449 | else { | |
b6b38f70 JP |
450 | cERROR(1, "mount failed weak security disabled" |
451 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
452 | rc = -EOPNOTSUPP; |
453 | goto neg_err_exit; | |
50c2f753 | 454 | } |
286170aa | 455 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
10b9b98e PS |
456 | server->maxReq = min_t(unsigned int, |
457 | le16_to_cpu(rsp->MaxMpxCount), | |
458 | cifs_max_pending); | |
45275789 | 459 | set_credits(server, server->maxReq); |
c974befa | 460 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
eca6acf9 | 461 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
462 | /* even though we do not use raw we might as well set this |
463 | accurately, in case we ever find a need for it */ | |
790fe579 | 464 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 465 | server->max_rw = 0xFF00; |
254e55ed SF |
466 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
467 | } else { | |
eca6acf9 | 468 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
469 | server->capabilities = CAP_MPX_MODE; |
470 | } | |
b815f1e5 | 471 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 472 | if (tmp == -1) { |
25ee4a98 SF |
473 | /* OS/2 often does not set timezone therefore |
474 | * we must use server time to calc time zone. | |
b815f1e5 SF |
475 | * Could deviate slightly from the right zone. |
476 | * Smallest defined timezone difference is 15 minutes | |
477 | * (i.e. Nepal). Rounding up/down is done to match | |
478 | * this requirement. | |
25ee4a98 | 479 | */ |
b815f1e5 | 480 | int val, seconds, remain, result; |
25ee4a98 SF |
481 | struct timespec ts, utc; |
482 | utc = CURRENT_TIME; | |
c4a2c08d JL |
483 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
484 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 485 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 486 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 487 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 488 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 489 | seconds = abs(val); |
947a5067 | 490 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 491 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 492 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 493 | result += MIN_TZ_ADJ; |
790fe579 | 494 | if (val < 0) |
ad7a2926 | 495 | result = -result; |
b815f1e5 | 496 | server->timeAdj = result; |
25ee4a98 | 497 | } else { |
b815f1e5 SF |
498 | server->timeAdj = (int)tmp; |
499 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 500 | } |
b6b38f70 | 501 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 502 | |
3979877e | 503 | |
254e55ed | 504 | /* BB get server time for time conversions and add |
50c2f753 | 505 | code to use it and timezone since this is not UTC */ |
3979877e | 506 | |
50c2f753 | 507 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 508 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 509 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 510 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 511 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
512 | rc = -EIO; /* need cryptkey unless plain text */ |
513 | goto neg_err_exit; | |
514 | } | |
3979877e | 515 | |
f19159dc | 516 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
517 | /* we will not end up setting signing flags - as no signing |
518 | was in LANMAN and server did not return the flags on */ | |
519 | goto signing_check; | |
7c7b25bc | 520 | #else /* weak security disabled */ |
790fe579 | 521 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
522 | cERROR(1, "mount failed, cifs module not built " |
523 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 524 | rc = -EOPNOTSUPP; |
7c7b25bc | 525 | #endif /* WEAK_PW_HASH */ |
254e55ed | 526 | goto neg_err_exit; |
790fe579 | 527 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
528 | /* unknown wct */ |
529 | rc = -EOPNOTSUPP; | |
530 | goto neg_err_exit; | |
531 | } | |
532 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
533 | server->sec_mode = pSMBr->SecurityMode; |
534 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 535 | cFYI(1, "share mode security"); |
bdc4bf6e | 536 | |
96daf2b0 | 537 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 538 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 539 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 540 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
541 | cERROR(1, "Server requests plain text password" |
542 | " but client support disabled"); | |
9312f675 | 543 | |
790fe579 | 544 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 545 | server->secType = NTLMv2; |
790fe579 | 546 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 547 | server->secType = NTLM; |
790fe579 | 548 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 549 | server->secType = NTLMv2; |
a013689d SF |
550 | else if (secFlags & CIFSSEC_MAY_KRB5) |
551 | server->secType = Kerberos; | |
ac683924 | 552 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 553 | server->secType = RawNTLMSSP; |
a013689d SF |
554 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
555 | server->secType = LANMAN; | |
a013689d SF |
556 | else { |
557 | rc = -EOPNOTSUPP; | |
b6b38f70 | 558 | cERROR(1, "Invalid security type"); |
a013689d SF |
559 | goto neg_err_exit; |
560 | } | |
561 | /* else ... any others ...? */ | |
254e55ed SF |
562 | |
563 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
564 | little endian */ | |
10b9b98e PS |
565 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
566 | cifs_max_pending); | |
45275789 | 567 | set_credits(server, server->maxReq); |
254e55ed | 568 | /* probably no need to store and check maxvcs */ |
c974befa | 569 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 570 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 571 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 572 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
573 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
574 | server->timeAdj *= 60; | |
254e55ed | 575 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 576 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 577 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
578 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
579 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
580 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 581 | /* decode security blob */ |
820a803f | 582 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 583 | if (count < 16) { |
254e55ed | 584 | rc = -EIO; |
e187e44e JL |
585 | goto neg_err_exit; |
586 | } | |
3f9bcca7 | 587 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 588 | if (server->srv_count > 1) { |
3f9bcca7 | 589 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
590 | if (memcmp(server->server_GUID, |
591 | pSMBr->u.extended_response. | |
592 | GUID, 16) != 0) { | |
b6b38f70 | 593 | cFYI(1, "server UID changed"); |
254e55ed | 594 | memcpy(server->server_GUID, |
e187e44e JL |
595 | pSMBr->u.extended_response.GUID, |
596 | 16); | |
597 | } | |
e7ddee90 | 598 | } else { |
3f9bcca7 | 599 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
600 | memcpy(server->server_GUID, |
601 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 602 | } |
e187e44e JL |
603 | |
604 | if (count == 16) { | |
605 | server->secType = RawNTLMSSP; | |
254e55ed SF |
606 | } else { |
607 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
608 | SecurityBlob, count - 16, |
609 | server); | |
ef571cad | 610 | if (rc == 1) |
e545937a | 611 | rc = 0; |
ef571cad | 612 | else |
254e55ed | 613 | rc = -EINVAL; |
2b149f11 SP |
614 | if (server->secType == Kerberos) { |
615 | if (!server->sec_kerberos && | |
616 | !server->sec_mskerberos) | |
617 | rc = -EOPNOTSUPP; | |
618 | } else if (server->secType == RawNTLMSSP) { | |
619 | if (!server->sec_ntlmssp) | |
620 | rc = -EOPNOTSUPP; | |
621 | } else | |
622 | rc = -EOPNOTSUPP; | |
1da177e4 | 623 | } |
96daf2b0 | 624 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
625 | rc = -EIO; /* no crypt key only if plain text pwd */ |
626 | goto neg_err_exit; | |
254e55ed SF |
627 | } else |
628 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
629 | ||
6344a423 | 630 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 631 | signing_check: |
6344a423 | 632 | #endif |
762e5ab7 SF |
633 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
634 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
635 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 636 | cFYI(1, "Signing disabled"); |
96daf2b0 | 637 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 638 | cERROR(1, "Server requires " |
7111d214 | 639 | "packet signing to be enabled in " |
b6b38f70 | 640 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
641 | rc = -EOPNOTSUPP; |
642 | } | |
96daf2b0 | 643 | server->sec_mode &= |
254e55ed | 644 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
645 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
646 | /* signing required */ | |
b6b38f70 | 647 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 648 | if ((server->sec_mode & |
762e5ab7 | 649 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 650 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 651 | rc = -EOPNOTSUPP; |
762e5ab7 | 652 | } else |
96daf2b0 | 653 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
654 | } else { |
655 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
656 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
657 | server->sec_mode &= | |
254e55ed | 658 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 659 | } |
50c2f753 SF |
660 | |
661 | neg_err_exit: | |
4a6d87f1 | 662 | cifs_buf_release(pSMB); |
254e55ed | 663 | |
b6b38f70 | 664 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
665 | return rc; |
666 | } | |
667 | ||
668 | int | |
2e6e02ab | 669 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
670 | { |
671 | struct smb_hdr *smb_buffer; | |
1da177e4 | 672 | int rc = 0; |
1da177e4 | 673 | |
b6b38f70 | 674 | cFYI(1, "In tree disconnect"); |
1da177e4 | 675 | |
f1987b44 JL |
676 | /* BB: do we need to check this? These should never be NULL. */ |
677 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
678 | return -EIO; | |
1da177e4 | 679 | |
f1987b44 JL |
680 | /* |
681 | * No need to return error on this operation if tid invalidated and | |
682 | * closed on server already e.g. due to tcp session crashing. Also, | |
683 | * the tcon is no longer on the list, so no need to take lock before | |
684 | * checking this. | |
685 | */ | |
268875b9 | 686 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 687 | return 0; |
1da177e4 | 688 | |
50c2f753 | 689 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 690 | (void **)&smb_buffer); |
f1987b44 | 691 | if (rc) |
1da177e4 | 692 | return rc; |
133672ef | 693 | |
792af7b0 | 694 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 695 | if (rc) |
b6b38f70 | 696 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 697 | |
50c2f753 | 698 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 699 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
700 | if (rc == -EAGAIN) |
701 | rc = 0; | |
702 | ||
703 | return rc; | |
704 | } | |
705 | ||
766fdbb5 JL |
706 | /* |
707 | * This is a no-op for now. We're not really interested in the reply, but | |
708 | * rather in the fact that the server sent one and that server->lstrp | |
709 | * gets updated. | |
710 | * | |
711 | * FIXME: maybe we should consider checking that the reply matches request? | |
712 | */ | |
713 | static void | |
714 | cifs_echo_callback(struct mid_q_entry *mid) | |
715 | { | |
716 | struct TCP_Server_Info *server = mid->callback_data; | |
717 | ||
718 | DeleteMidQEntry(mid); | |
a891f0f8 | 719 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
720 | } |
721 | ||
722 | int | |
723 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
724 | { | |
725 | ECHO_REQ *smb; | |
726 | int rc = 0; | |
fcc31cb6 | 727 | struct kvec iov; |
fec344e3 JL |
728 | struct smb_rqst rqst = { .rq_iov = &iov, |
729 | .rq_nvec = 1 }; | |
766fdbb5 JL |
730 | |
731 | cFYI(1, "In echo request"); | |
732 | ||
733 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
734 | if (rc) | |
735 | return rc; | |
736 | ||
737 | /* set up echo request */ | |
5443d130 | 738 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
739 | smb->hdr.WordCount = 1; |
740 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 741 | put_bcc(1, &smb->hdr); |
766fdbb5 | 742 | smb->Data[0] = 'a'; |
be8e3b00 | 743 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
744 | iov.iov_base = smb; |
745 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 746 | |
fec344e3 | 747 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f8 | 748 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 JL |
749 | if (rc) |
750 | cFYI(1, "Echo request failed: %d", rc); | |
751 | ||
752 | cifs_small_buf_release(smb); | |
753 | ||
754 | return rc; | |
755 | } | |
756 | ||
1da177e4 | 757 | int |
58c45c58 | 758 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 759 | { |
1da177e4 LT |
760 | LOGOFF_ANDX_REQ *pSMB; |
761 | int rc = 0; | |
1da177e4 | 762 | |
b6b38f70 | 763 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 764 | |
14fbf50d JL |
765 | /* |
766 | * BB: do we need to check validity of ses and server? They should | |
767 | * always be valid since we have an active reference. If not, that | |
768 | * should probably be a BUG() | |
769 | */ | |
770 | if (!ses || !ses->server) | |
3b795210 SF |
771 | return -EIO; |
772 | ||
d7b619cf | 773 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
774 | if (ses->need_reconnect) |
775 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
776 | already closed due to reconnect */ | |
1da177e4 LT |
777 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
778 | if (rc) { | |
d7b619cf | 779 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
780 | return rc; |
781 | } | |
782 | ||
88257360 | 783 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 784 | |
96daf2b0 | 785 | if (ses->server->sec_mode & |
1da177e4 LT |
786 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
787 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
788 | |
789 | pSMB->hdr.Uid = ses->Suid; | |
790 | ||
791 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 792 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 793 | session_already_dead: |
d7b619cf | 794 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
795 | |
796 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 797 | since server closed smb session, no sense reporting |
1da177e4 LT |
798 | error */ |
799 | if (rc == -EAGAIN) | |
800 | rc = 0; | |
801 | return rc; | |
802 | } | |
803 | ||
2d785a50 | 804 | int |
6d5786a3 PS |
805 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
806 | const char *fileName, __u16 type, | |
807 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
808 | { |
809 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
810 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
811 | struct unlink_psx_rq *pRqD; | |
812 | int name_len; | |
813 | int rc = 0; | |
814 | int bytes_returned = 0; | |
815 | __u16 params, param_offset, offset, byte_count; | |
816 | ||
b6b38f70 | 817 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
818 | PsxDelete: |
819 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
820 | (void **) &pSMBr); | |
821 | if (rc) | |
822 | return rc; | |
823 | ||
824 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
825 | name_len = | |
acbbb76a SF |
826 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
827 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
828 | name_len++; /* trailing null */ |
829 | name_len *= 2; | |
830 | } else { /* BB add path length overrun check */ | |
831 | name_len = strnlen(fileName, PATH_MAX); | |
832 | name_len++; /* trailing null */ | |
833 | strncpy(pSMB->FileName, fileName, name_len); | |
834 | } | |
835 | ||
836 | params = 6 + name_len; | |
837 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
838 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
839 | pSMB->MaxSetupCount = 0; | |
840 | pSMB->Reserved = 0; | |
841 | pSMB->Flags = 0; | |
842 | pSMB->Timeout = 0; | |
843 | pSMB->Reserved2 = 0; | |
844 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
845 | InformationLevel) - 4; | |
846 | offset = param_offset + params; | |
847 | ||
848 | /* Setup pointer to Request Data (inode type) */ | |
849 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
850 | pRqD->type = cpu_to_le16(type); | |
851 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
852 | pSMB->DataOffset = cpu_to_le16(offset); | |
853 | pSMB->SetupCount = 1; | |
854 | pSMB->Reserved3 = 0; | |
855 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
856 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
857 | ||
858 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
859 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
860 | pSMB->ParameterCount = cpu_to_le16(params); | |
861 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
862 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
863 | pSMB->Reserved4 = 0; | |
be8e3b00 | 864 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
865 | pSMB->ByteCount = cpu_to_le16(byte_count); |
866 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
867 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 868 | if (rc) |
b6b38f70 | 869 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
870 | cifs_buf_release(pSMB); |
871 | ||
44c58186 | 872 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
873 | |
874 | if (rc == -EAGAIN) | |
875 | goto PsxDelete; | |
876 | ||
877 | return rc; | |
878 | } | |
879 | ||
1da177e4 | 880 | int |
ed6875e0 PS |
881 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
882 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
883 | { |
884 | DELETE_FILE_REQ *pSMB = NULL; | |
885 | DELETE_FILE_RSP *pSMBr = NULL; | |
886 | int rc = 0; | |
887 | int bytes_returned; | |
888 | int name_len; | |
ed6875e0 | 889 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 LT |
890 | |
891 | DelFileRetry: | |
892 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
893 | (void **) &pSMBr); | |
894 | if (rc) | |
895 | return rc; | |
896 | ||
897 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
898 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
899 | PATH_MAX, cifs_sb->local_nls, | |
900 | remap); | |
1da177e4 LT |
901 | name_len++; /* trailing null */ |
902 | name_len *= 2; | |
09d1db5c | 903 | } else { /* BB improve check for buffer overruns BB */ |
ed6875e0 | 904 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 905 | name_len++; /* trailing null */ |
ed6875e0 | 906 | strncpy(pSMB->fileName, name, name_len); |
1da177e4 LT |
907 | } |
908 | pSMB->SearchAttributes = | |
909 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
910 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 911 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
912 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
913 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
914 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 915 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 916 | if (rc) |
b6b38f70 | 917 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
918 | |
919 | cifs_buf_release(pSMB); | |
920 | if (rc == -EAGAIN) | |
921 | goto DelFileRetry; | |
922 | ||
923 | return rc; | |
924 | } | |
925 | ||
926 | int | |
f958ca5d PS |
927 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
928 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
929 | { |
930 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
931 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
932 | int rc = 0; | |
933 | int bytes_returned; | |
934 | int name_len; | |
f958ca5d | 935 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 936 | |
b6b38f70 | 937 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
938 | RmDirRetry: |
939 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
940 | (void **) &pSMBr); | |
941 | if (rc) | |
942 | return rc; | |
943 | ||
944 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
945 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
946 | PATH_MAX, cifs_sb->local_nls, | |
947 | remap); | |
1da177e4 LT |
948 | name_len++; /* trailing null */ |
949 | name_len *= 2; | |
09d1db5c | 950 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 951 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 952 | name_len++; /* trailing null */ |
f958ca5d | 953 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
954 | } |
955 | ||
956 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 957 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
958 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
959 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
960 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 961 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 962 | if (rc) |
b6b38f70 | 963 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
964 | |
965 | cifs_buf_release(pSMB); | |
966 | if (rc == -EAGAIN) | |
967 | goto RmDirRetry; | |
968 | return rc; | |
969 | } | |
970 | ||
971 | int | |
f436720e PS |
972 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
973 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
974 | { |
975 | int rc = 0; | |
976 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
977 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
978 | int bytes_returned; | |
979 | int name_len; | |
f436720e | 980 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 981 | |
b6b38f70 | 982 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
983 | MkDirRetry: |
984 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
985 | (void **) &pSMBr); | |
986 | if (rc) | |
987 | return rc; | |
988 | ||
989 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 990 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
991 | PATH_MAX, cifs_sb->local_nls, |
992 | remap); | |
1da177e4 LT |
993 | name_len++; /* trailing null */ |
994 | name_len *= 2; | |
09d1db5c | 995 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
996 | name_len = strnlen(name, PATH_MAX); |
997 | name_len++; /* trailing null */ | |
998 | strncpy(pSMB->DirName, name, name_len); | |
999 | } | |
1000 | ||
1001 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1002 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1003 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1004 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1005 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1006 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1007 | if (rc) |
b6b38f70 | 1008 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 1009 | |
1da177e4 LT |
1010 | cifs_buf_release(pSMB); |
1011 | if (rc == -EAGAIN) | |
1012 | goto MkDirRetry; | |
1013 | return rc; | |
1014 | } | |
1015 | ||
2dd29d31 | 1016 | int |
6d5786a3 PS |
1017 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1018 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1019 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1020 | const char *name, const struct nls_table *nls_codepage, | |
1021 | int remap) | |
2dd29d31 SF |
1022 | { |
1023 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1024 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1025 | int name_len; | |
1026 | int rc = 0; | |
1027 | int bytes_returned = 0; | |
2dd29d31 | 1028 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1029 | OPEN_PSX_REQ *pdata; |
1030 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1031 | |
b6b38f70 | 1032 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1033 | PsxCreat: |
1034 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1035 | (void **) &pSMBr); | |
1036 | if (rc) | |
1037 | return rc; | |
1038 | ||
1039 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1040 | name_len = | |
acbbb76a SF |
1041 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1042 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1043 | name_len++; /* trailing null */ |
1044 | name_len *= 2; | |
1045 | } else { /* BB improve the check for buffer overruns BB */ | |
1046 | name_len = strnlen(name, PATH_MAX); | |
1047 | name_len++; /* trailing null */ | |
1048 | strncpy(pSMB->FileName, name, name_len); | |
1049 | } | |
1050 | ||
1051 | params = 6 + name_len; | |
1052 | count = sizeof(OPEN_PSX_REQ); | |
1053 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1054 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1055 | pSMB->MaxSetupCount = 0; | |
1056 | pSMB->Reserved = 0; | |
1057 | pSMB->Flags = 0; | |
1058 | pSMB->Timeout = 0; | |
1059 | pSMB->Reserved2 = 0; | |
1060 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1061 | InformationLevel) - 4; |
2dd29d31 | 1062 | offset = param_offset + params; |
2dd29d31 | 1063 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1064 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1065 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1066 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1067 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1068 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1069 | pSMB->DataOffset = cpu_to_le16(offset); | |
1070 | pSMB->SetupCount = 1; | |
1071 | pSMB->Reserved3 = 0; | |
1072 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1073 | byte_count = 3 /* pad */ + params + count; | |
1074 | ||
1075 | pSMB->DataCount = cpu_to_le16(count); | |
1076 | pSMB->ParameterCount = cpu_to_le16(params); | |
1077 | pSMB->TotalDataCount = pSMB->DataCount; | |
1078 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1079 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1080 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1081 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1082 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1083 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1084 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1085 | if (rc) { | |
b6b38f70 | 1086 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1087 | goto psx_create_err; |
1088 | } | |
1089 | ||
b6b38f70 | 1090 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1091 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1092 | ||
820a803f | 1093 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1094 | rc = -EIO; /* bad smb */ |
1095 | goto psx_create_err; | |
1096 | } | |
1097 | ||
1098 | /* copy return information to pRetData */ | |
50c2f753 | 1099 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1100 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1101 | |
2dd29d31 | 1102 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1103 | if (netfid) |
2dd29d31 SF |
1104 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1105 | /* Let caller know file was created so we can set the mode. */ | |
1106 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1107 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1108 | *pOplock |= CIFS_CREATE_ACTION; |
1109 | /* check to make sure response data is there */ | |
8f2376ad CG |
1110 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1111 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1112 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1113 | } else { |
820a803f | 1114 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1115 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1116 | cERROR(1, "Open response data too small"); |
8f2376ad | 1117 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1118 | goto psx_create_err; |
1119 | } | |
50c2f753 | 1120 | memcpy((char *) pRetData, |
cbac3cba | 1121 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1122 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1123 | } |
2dd29d31 SF |
1124 | |
1125 | psx_create_err: | |
1126 | cifs_buf_release(pSMB); | |
1127 | ||
65bc98b0 | 1128 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1129 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1130 | else |
44c58186 | 1131 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1132 | |
1133 | if (rc == -EAGAIN) | |
1134 | goto PsxCreat; | |
1135 | ||
50c2f753 | 1136 | return rc; |
2dd29d31 SF |
1137 | } |
1138 | ||
a9d02ad4 SF |
1139 | static __u16 convert_disposition(int disposition) |
1140 | { | |
1141 | __u16 ofun = 0; | |
1142 | ||
1143 | switch (disposition) { | |
1144 | case FILE_SUPERSEDE: | |
1145 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | case FILE_OPEN: | |
1148 | ofun = SMBOPEN_OAPPEND; | |
1149 | break; | |
1150 | case FILE_CREATE: | |
1151 | ofun = SMBOPEN_OCREATE; | |
1152 | break; | |
1153 | case FILE_OPEN_IF: | |
1154 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1155 | break; | |
1156 | case FILE_OVERWRITE: | |
1157 | ofun = SMBOPEN_OTRUNC; | |
1158 | break; | |
1159 | case FILE_OVERWRITE_IF: | |
1160 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1161 | break; | |
1162 | default: | |
b6b38f70 | 1163 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1164 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1165 | } | |
1166 | return ofun; | |
1167 | } | |
1168 | ||
35fc37d5 JL |
1169 | static int |
1170 | access_flags_to_smbopen_mode(const int access_flags) | |
1171 | { | |
1172 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1173 | ||
1174 | if (masked_flags == GENERIC_READ) | |
1175 | return SMBOPEN_READ; | |
1176 | else if (masked_flags == GENERIC_WRITE) | |
1177 | return SMBOPEN_WRITE; | |
1178 | ||
1179 | /* just go for read/write */ | |
1180 | return SMBOPEN_READWRITE; | |
1181 | } | |
1182 | ||
a9d02ad4 | 1183 | int |
6d5786a3 | 1184 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1185 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1186 | const int access_flags, const int create_options, __u16 *netfid, |
1187 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1188 | const struct nls_table *nls_codepage, int remap) |
1189 | { | |
1190 | int rc = -EACCES; | |
1191 | OPENX_REQ *pSMB = NULL; | |
1192 | OPENX_RSP *pSMBr = NULL; | |
1193 | int bytes_returned; | |
1194 | int name_len; | |
1195 | __u16 count; | |
1196 | ||
1197 | OldOpenRetry: | |
1198 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1199 | (void **) &pSMBr); | |
1200 | if (rc) | |
1201 | return rc; | |
1202 | ||
1203 | pSMB->AndXCommand = 0xFF; /* none */ | |
1204 | ||
1205 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1206 | count = 1; /* account for one byte pad to word boundary */ | |
1207 | name_len = | |
acbbb76a SF |
1208 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1209 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1210 | name_len++; /* trailing null */ |
1211 | name_len *= 2; | |
1212 | } else { /* BB improve check for buffer overruns BB */ | |
1213 | count = 0; /* no pad */ | |
1214 | name_len = strnlen(fileName, PATH_MAX); | |
1215 | name_len++; /* trailing null */ | |
1216 | strncpy(pSMB->fileName, fileName, name_len); | |
1217 | } | |
1218 | if (*pOplock & REQ_OPLOCK) | |
1219 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1220 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1221 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1222 | |
a9d02ad4 | 1223 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1224 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1225 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1226 | /* set file as system file if special file such | |
1227 | as fifo and server expecting SFU style and | |
1228 | no Unix extensions */ | |
1229 | ||
790fe579 SF |
1230 | if (create_options & CREATE_OPTION_SPECIAL) |
1231 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1232 | else /* BB FIXME BB */ |
1233 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1234 | |
67750fb9 JL |
1235 | if (create_options & CREATE_OPTION_READONLY) |
1236 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1237 | |
1238 | /* BB FIXME BB */ | |
50c2f753 SF |
1239 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1240 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1241 | /* BB FIXME END BB */ |
3e87d803 SF |
1242 | |
1243 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1244 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1245 | count += name_len; |
be8e3b00 | 1246 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1247 | |
1248 | pSMB->ByteCount = cpu_to_le16(count); | |
1249 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1250 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1251 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1252 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1253 | if (rc) { |
b6b38f70 | 1254 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1255 | } else { |
1256 | /* BB verify if wct == 15 */ | |
1257 | ||
582d21e5 | 1258 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1259 | |
1260 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1261 | /* Let caller know file was created so we can set the mode. */ | |
1262 | /* Do we care about the CreateAction in any other cases? */ | |
1263 | /* BB FIXME BB */ | |
790fe579 | 1264 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1265 | *pOplock |= CIFS_CREATE_ACTION; */ |
1266 | /* BB FIXME END */ | |
1267 | ||
790fe579 | 1268 | if (pfile_info) { |
a9d02ad4 SF |
1269 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1270 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1271 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1272 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1273 | pfile_info->Attributes = |
50c2f753 | 1274 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1275 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1276 | pfile_info->AllocationSize = |
1277 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1278 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1279 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1280 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1281 | } |
1282 | } | |
1283 | ||
1284 | cifs_buf_release(pSMB); | |
1285 | if (rc == -EAGAIN) | |
1286 | goto OldOpenRetry; | |
1287 | return rc; | |
1288 | } | |
1289 | ||
1da177e4 | 1290 | int |
6d5786a3 | 1291 | CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 1292 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1293 | const int access_flags, const int create_options, __u16 *netfid, |
1294 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1295 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1296 | { |
1297 | int rc = -EACCES; | |
1298 | OPEN_REQ *pSMB = NULL; | |
1299 | OPEN_RSP *pSMBr = NULL; | |
1300 | int bytes_returned; | |
1301 | int name_len; | |
1302 | __u16 count; | |
1303 | ||
1304 | openRetry: | |
1305 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1306 | (void **) &pSMBr); | |
1307 | if (rc) | |
1308 | return rc; | |
1309 | ||
1310 | pSMB->AndXCommand = 0xFF; /* none */ | |
1311 | ||
1312 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1313 | count = 1; /* account for one byte pad to word boundary */ | |
1314 | name_len = | |
acbbb76a SF |
1315 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1316 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1317 | name_len++; /* trailing null */ |
1318 | name_len *= 2; | |
1319 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1320 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1321 | count = 0; /* no pad */ |
1322 | name_len = strnlen(fileName, PATH_MAX); | |
1323 | name_len++; /* trailing null */ | |
1324 | pSMB->NameLength = cpu_to_le16(name_len); | |
1325 | strncpy(pSMB->fileName, fileName, name_len); | |
1326 | } | |
1327 | if (*pOplock & REQ_OPLOCK) | |
1328 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1329 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1330 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1331 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1332 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1333 | /* set file as system file if special file such |
1334 | as fifo and server expecting SFU style and | |
1335 | no Unix extensions */ | |
790fe579 | 1336 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1337 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1338 | else | |
1339 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1340 | |
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 | ||
67750fb9 JL |
1347 | if (create_options & CREATE_OPTION_READONLY) |
1348 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1349 | ||
1da177e4 LT |
1350 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1351 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1352 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1353 | /* BB Expirement with various impersonation levels and verify */ |
1354 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1355 | pSMB->SecurityFlags = |
1356 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1357 | ||
1358 | count += name_len; | |
be8e3b00 | 1359 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1360 | |
1361 | pSMB->ByteCount = cpu_to_le16(count); | |
1362 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1363 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1364 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1365 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1366 | if (rc) { |
b6b38f70 | 1367 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1368 | } else { |
09d1db5c | 1369 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1370 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1371 | /* Let caller know file was created so we can set the mode. */ | |
1372 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1373 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1374 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1375 | if (pfile_info) { |
61e74801 SF |
1376 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1377 | 36 /* CreationTime to Attributes */); | |
1378 | /* the file_info buf is endian converted by caller */ | |
1379 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1380 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1381 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1382 | pfile_info->DeletePending = 0; | |
1da177e4 | 1383 | } |
1da177e4 | 1384 | } |
a5a2b489 | 1385 | |
1da177e4 LT |
1386 | cifs_buf_release(pSMB); |
1387 | if (rc == -EAGAIN) | |
1388 | goto openRetry; | |
1389 | return rc; | |
1390 | } | |
1391 | ||
e28bc5b1 JL |
1392 | /* |
1393 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1394 | * current bigbuf. | |
1395 | */ | |
1396 | static int | |
1397 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1398 | { | |
5ffef7bf | 1399 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1400 | int remaining = rfclen + 4 - server->total_read; |
1401 | struct cifs_readdata *rdata = mid->callback_data; | |
1402 | ||
1403 | while (remaining > 0) { | |
1404 | int length; | |
1405 | ||
1406 | length = cifs_read_from_socket(server, server->bigbuf, | |
1407 | min_t(unsigned int, remaining, | |
1887f601 | 1408 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1409 | if (length < 0) |
1410 | return length; | |
1411 | server->total_read += length; | |
1412 | remaining -= length; | |
1413 | } | |
1414 | ||
1415 | dequeue_mid(mid, rdata->result); | |
1416 | return 0; | |
1417 | } | |
1418 | ||
09a4707e | 1419 | int |
e28bc5b1 JL |
1420 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
1421 | { | |
1422 | int length, len; | |
8d5ce4d2 | 1423 | unsigned int data_offset, data_len; |
e28bc5b1 | 1424 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1425 | char *buf = server->smallbuf; |
1426 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1427 | |
7c9421e1 | 1428 | cFYI(1, "%s: mid=%llu offset=%llu bytes=%u", __func__, |
e28bc5b1 JL |
1429 | mid->mid, rdata->offset, rdata->bytes); |
1430 | ||
1431 | /* | |
1432 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1433 | * can if there's not enough data. At this point, we've read down to | |
1434 | * the Mid. | |
1435 | */ | |
eb378711 | 1436 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1437 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1438 | |
5819575e JL |
1439 | rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1; |
1440 | rdata->iov.iov_len = len; | |
e28bc5b1 | 1441 | |
5819575e | 1442 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); |
e28bc5b1 JL |
1443 | if (length < 0) |
1444 | return length; | |
1445 | server->total_read += length; | |
1446 | ||
1447 | /* Was the SMB read successful? */ | |
eb378711 | 1448 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 JL |
1449 | if (rdata->result != 0) { |
1450 | cFYI(1, "%s: server returned error %d", __func__, | |
1451 | rdata->result); | |
1452 | return cifs_readv_discard(server, mid); | |
1453 | } | |
1454 | ||
1455 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1456 | if (server->total_read < server->vals->read_rsp_size) { |
e28bc5b1 | 1457 | cFYI(1, "%s: server returned short header. got=%u expected=%zu", |
eb378711 PS |
1458 | __func__, server->total_read, |
1459 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1460 | rdata->result = -EIO; |
1461 | return cifs_readv_discard(server, mid); | |
1462 | } | |
1463 | ||
eb378711 | 1464 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1465 | if (data_offset < server->total_read) { |
1466 | /* | |
1467 | * win2k8 sometimes sends an offset of 0 when the read | |
1468 | * is beyond the EOF. Treat it as if the data starts just after | |
1469 | * the header. | |
1470 | */ | |
1471 | cFYI(1, "%s: data offset (%u) inside read response header", | |
1472 | __func__, data_offset); | |
1473 | data_offset = server->total_read; | |
1474 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1475 | /* data_offset is beyond the end of smallbuf */ | |
1476 | cFYI(1, "%s: data offset (%u) beyond end of smallbuf", | |
1477 | __func__, data_offset); | |
1478 | rdata->result = -EIO; | |
1479 | return cifs_readv_discard(server, mid); | |
1480 | } | |
1481 | ||
1482 | cFYI(1, "%s: total_read=%u data_offset=%u", __func__, | |
1483 | server->total_read, data_offset); | |
1484 | ||
1485 | len = data_offset - server->total_read; | |
1486 | if (len > 0) { | |
1487 | /* read any junk before data into the rest of smallbuf */ | |
5819575e JL |
1488 | rdata->iov.iov_base = buf + server->total_read; |
1489 | rdata->iov.iov_len = len; | |
1490 | length = cifs_readv_from_socket(server, &rdata->iov, 1, len); | |
e28bc5b1 JL |
1491 | if (length < 0) |
1492 | return length; | |
1493 | server->total_read += length; | |
1494 | } | |
1495 | ||
1496 | /* set up first iov for signature check */ | |
5819575e JL |
1497 | rdata->iov.iov_base = buf; |
1498 | rdata->iov.iov_len = server->total_read; | |
e28bc5b1 | 1499 | cFYI(1, "0: iov_base=%p iov_len=%zu", |
5819575e | 1500 | rdata->iov.iov_base, rdata->iov.iov_len); |
e28bc5b1 JL |
1501 | |
1502 | /* how much data is in the response? */ | |
eb378711 | 1503 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1504 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1505 | /* data_len is corrupt -- discard frame */ |
1506 | rdata->result = -EIO; | |
1507 | return cifs_readv_discard(server, mid); | |
1508 | } | |
1509 | ||
8321fec4 JL |
1510 | length = rdata->read_into_pages(server, rdata, data_len); |
1511 | if (length < 0) | |
1512 | return length; | |
e28bc5b1 | 1513 | |
8321fec4 | 1514 | server->total_read += length; |
e28bc5b1 JL |
1515 | rdata->bytes = length; |
1516 | ||
5ffef7bf | 1517 | cFYI(1, "total_read=%u buflen=%u remaining=%u", server->total_read, |
8d5ce4d2 | 1518 | buflen, data_len); |
e28bc5b1 JL |
1519 | |
1520 | /* discard anything left over */ | |
5ffef7bf | 1521 | if (server->total_read < buflen) |
e28bc5b1 JL |
1522 | return cifs_readv_discard(server, mid); |
1523 | ||
1524 | dequeue_mid(mid, false); | |
1525 | return length; | |
1526 | } | |
1527 | ||
e28bc5b1 JL |
1528 | static void |
1529 | cifs_readv_callback(struct mid_q_entry *mid) | |
1530 | { | |
1531 | struct cifs_readdata *rdata = mid->callback_data; | |
1532 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1533 | struct TCP_Server_Info *server = tcon->ses->server; | |
5819575e JL |
1534 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
1535 | .rq_nvec = 1, | |
8321fec4 JL |
1536 | .rq_pages = rdata->pages, |
1537 | .rq_npages = rdata->nr_pages, | |
1538 | .rq_pagesz = rdata->pagesz, | |
1539 | .rq_tailsz = rdata->tailsz }; | |
e28bc5b1 | 1540 | |
7c9421e1 PS |
1541 | cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__, |
1542 | mid->mid, mid->mid_state, rdata->result, rdata->bytes); | |
e28bc5b1 | 1543 | |
7c9421e1 | 1544 | switch (mid->mid_state) { |
e28bc5b1 JL |
1545 | case MID_RESPONSE_RECEIVED: |
1546 | /* result already set, check signature */ | |
1547 | if (server->sec_mode & | |
1548 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { | |
985e4ff0 SF |
1549 | int rc = 0; |
1550 | ||
bf5ea0e2 JL |
1551 | rc = cifs_verify_signature(&rqst, server, |
1552 | mid->sequence_number + 1); | |
985e4ff0 SF |
1553 | if (rc) |
1554 | cERROR(1, "SMB signature verification returned " | |
1555 | "error = %d", rc); | |
e28bc5b1 JL |
1556 | } |
1557 | /* FIXME: should this be counted toward the initiating task? */ | |
1558 | task_io_account_read(rdata->bytes); | |
1559 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1560 | break; | |
1561 | case MID_REQUEST_SUBMITTED: | |
1562 | case MID_RETRY_NEEDED: | |
1563 | rdata->result = -EAGAIN; | |
1564 | break; | |
1565 | default: | |
1566 | rdata->result = -EIO; | |
1567 | } | |
1568 | ||
da472fc8 | 1569 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1570 | DeleteMidQEntry(mid); |
a891f0f8 | 1571 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1572 | } |
1573 | ||
1574 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1575 | int | |
1576 | cifs_async_readv(struct cifs_readdata *rdata) | |
1577 | { | |
1578 | int rc; | |
1579 | READ_REQ *smb = NULL; | |
1580 | int wct; | |
1581 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
5819575e | 1582 | struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3 | 1583 | .rq_nvec = 1 }; |
e28bc5b1 JL |
1584 | |
1585 | cFYI(1, "%s: offset=%llu bytes=%u", __func__, | |
1586 | rdata->offset, rdata->bytes); | |
1587 | ||
1588 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1589 | wct = 12; | |
1590 | else { | |
1591 | wct = 10; /* old style read */ | |
1592 | if ((rdata->offset >> 32) > 0) { | |
1593 | /* can not handle this big offset for old */ | |
1594 | return -EIO; | |
1595 | } | |
1596 | } | |
1597 | ||
1598 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1599 | if (rc) | |
1600 | return rc; | |
1601 | ||
1602 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1603 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1604 | ||
1605 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1606 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1607 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1608 | if (wct == 12) | |
1609 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1610 | smb->Remaining = 0; | |
1611 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1612 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1613 | if (wct == 12) | |
1614 | smb->ByteCount = 0; | |
1615 | else { | |
1616 | /* old style read */ | |
1617 | struct smb_com_readx_req *smbr = | |
1618 | (struct smb_com_readx_req *)smb; | |
1619 | smbr->ByteCount = 0; | |
1620 | } | |
1621 | ||
1622 | /* 4 for RFC1001 length + 1 for BCC */ | |
5819575e JL |
1623 | rdata->iov.iov_base = smb; |
1624 | rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
e28bc5b1 | 1625 | |
6993f74a | 1626 | kref_get(&rdata->refcount); |
fec344e3 JL |
1627 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
1628 | cifs_readv_callback, rdata, 0); | |
e28bc5b1 JL |
1629 | |
1630 | if (rc == 0) | |
44c58186 | 1631 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1632 | else |
1633 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1634 | |
1635 | cifs_small_buf_release(smb); | |
1636 | return rc; | |
1637 | } | |
1638 | ||
1da177e4 | 1639 | int |
6d5786a3 PS |
1640 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1641 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1642 | { |
1643 | int rc = -EACCES; | |
1644 | READ_REQ *pSMB = NULL; | |
1645 | READ_RSP *pSMBr = NULL; | |
1646 | char *pReadData = NULL; | |
bfa0d75a | 1647 | int wct; |
ec637e3f SF |
1648 | int resp_buf_type = 0; |
1649 | struct kvec iov[1]; | |
d4ffff1f PS |
1650 | __u32 pid = io_parms->pid; |
1651 | __u16 netfid = io_parms->netfid; | |
1652 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1653 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1654 | unsigned int count = io_parms->length; |
1da177e4 | 1655 | |
b6b38f70 | 1656 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1657 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1658 | wct = 12; |
4c3130ef | 1659 | else { |
bfa0d75a | 1660 | wct = 10; /* old style read */ |
d4ffff1f | 1661 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1662 | /* can not handle this big offset for old */ |
1663 | return -EIO; | |
1664 | } | |
1665 | } | |
1da177e4 LT |
1666 | |
1667 | *nbytes = 0; | |
ec637e3f | 1668 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1669 | if (rc) |
1670 | return rc; | |
1671 | ||
d4ffff1f PS |
1672 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1673 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1674 | ||
1da177e4 LT |
1675 | /* tcon and ses pointer are checked in smb_init */ |
1676 | if (tcon->ses->server == NULL) | |
1677 | return -ECONNABORTED; | |
1678 | ||
ec637e3f | 1679 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1680 | pSMB->Fid = netfid; |
d4ffff1f | 1681 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1682 | if (wct == 12) |
d4ffff1f | 1683 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1684 | |
1da177e4 LT |
1685 | pSMB->Remaining = 0; |
1686 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1687 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1688 | if (wct == 12) |
bfa0d75a SF |
1689 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1690 | else { | |
1691 | /* old style read */ | |
50c2f753 | 1692 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1693 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1694 | pSMBW->ByteCount = 0; |
bfa0d75a | 1695 | } |
ec637e3f SF |
1696 | |
1697 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1698 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1699 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1700 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1701 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1702 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1703 | if (rc) { |
b6b38f70 | 1704 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1705 | } else { |
1706 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1707 | data_length = data_length << 16; | |
1708 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1709 | *nbytes = data_length; | |
1710 | ||
1711 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1712 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1713 | || (data_length > count)) { |
b6b38f70 JP |
1714 | cFYI(1, "bad length %d for count %d", |
1715 | data_length, count); | |
1da177e4 LT |
1716 | rc = -EIO; |
1717 | *nbytes = 0; | |
1718 | } else { | |
ec637e3f | 1719 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1720 | le16_to_cpu(pSMBr->DataOffset); |
1721 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1722 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1723 | rc = -EFAULT; |
26f57364 | 1724 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1725 | if (*buf) |
50c2f753 | 1726 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1727 | } |
1728 | } | |
1da177e4 | 1729 | |
4b8f930f | 1730 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1731 | if (*buf) { |
1732 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1733 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1734 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1735 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1736 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1737 | /* return buffer to caller to free */ |
1738 | *buf = iov[0].iov_base; | |
790fe579 | 1739 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1740 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1741 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1742 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1743 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1744 | |
1745 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1746 | since file handle passed in no longer valid */ |
1747 | return rc; | |
1748 | } | |
1749 | ||
ec637e3f | 1750 | |
1da177e4 | 1751 | int |
6d5786a3 | 1752 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 | 1753 | unsigned int *nbytes, const char *buf, |
50c2f753 | 1754 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1755 | { |
1756 | int rc = -EACCES; | |
1757 | WRITE_REQ *pSMB = NULL; | |
1758 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1759 | int bytes_returned, wct; |
1da177e4 LT |
1760 | __u32 bytes_sent; |
1761 | __u16 byte_count; | |
fa2989f4 PS |
1762 | __u32 pid = io_parms->pid; |
1763 | __u16 netfid = io_parms->netfid; | |
1764 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1765 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1766 | unsigned int count = io_parms->length; |
1da177e4 | 1767 | |
a24e2d7d SF |
1768 | *nbytes = 0; |
1769 | ||
b6b38f70 | 1770 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1771 | if (tcon->ses == NULL) |
1c955187 SF |
1772 | return -ECONNABORTED; |
1773 | ||
790fe579 | 1774 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1775 | wct = 14; |
4c3130ef | 1776 | else { |
1c955187 | 1777 | wct = 12; |
4c3130ef SF |
1778 | if ((offset >> 32) > 0) { |
1779 | /* can not handle big offset for old srv */ | |
1780 | return -EIO; | |
1781 | } | |
1782 | } | |
1c955187 SF |
1783 | |
1784 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1785 | (void **) &pSMBr); |
1786 | if (rc) | |
1787 | return rc; | |
fa2989f4 PS |
1788 | |
1789 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1790 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1791 | ||
1da177e4 LT |
1792 | /* tcon and ses pointer are checked in smb_init */ |
1793 | if (tcon->ses->server == NULL) | |
1794 | return -ECONNABORTED; | |
1795 | ||
1796 | pSMB->AndXCommand = 0xFF; /* none */ | |
1797 | pSMB->Fid = netfid; | |
1798 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1799 | if (wct == 14) |
1c955187 | 1800 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1801 | |
1da177e4 LT |
1802 | pSMB->Reserved = 0xFFFFFFFF; |
1803 | pSMB->WriteMode = 0; | |
1804 | pSMB->Remaining = 0; | |
1805 | ||
50c2f753 | 1806 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1807 | can send more if LARGE_WRITE_X capability returned by the server and if |
1808 | our buffer is big enough or if we convert to iovecs on socket writes | |
1809 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1810 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1811 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1812 | } else { | |
1813 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1814 | & ~0xFF; | |
1815 | } | |
1816 | ||
1817 | if (bytes_sent > count) | |
1818 | bytes_sent = count; | |
1819 | pSMB->DataOffset = | |
50c2f753 | 1820 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1821 | if (buf) |
61e74801 | 1822 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1823 | else if (ubuf) { |
1824 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1825 | cifs_buf_release(pSMB); |
1826 | return -EFAULT; | |
1827 | } | |
e30dcf3a | 1828 | } else if (count != 0) { |
1da177e4 LT |
1829 | /* No buffer */ |
1830 | cifs_buf_release(pSMB); | |
1831 | return -EINVAL; | |
e30dcf3a | 1832 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1833 | if (wct == 14) |
e30dcf3a | 1834 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1835 | else /* wct == 12 */ |
e30dcf3a | 1836 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1837 | |
1da177e4 LT |
1838 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1839 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1840 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1841 | |
790fe579 | 1842 | if (wct == 14) |
1c955187 | 1843 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1844 | else { /* old style write has byte count 4 bytes earlier |
1845 | so 4 bytes pad */ | |
1846 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1847 | (struct smb_com_writex_req *)pSMB; |
1848 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1849 | } | |
1da177e4 LT |
1850 | |
1851 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1852 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
44c58186 | 1853 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1854 | if (rc) { |
f19159dc | 1855 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1856 | } else { |
1857 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1858 | *nbytes = (*nbytes) << 16; | |
1859 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1860 | |
1861 | /* | |
1862 | * Mask off high 16 bits when bytes written as returned by the | |
1863 | * server is greater than bytes requested by the client. Some | |
1864 | * OS/2 servers are known to set incorrect CountHigh values. | |
1865 | */ | |
1866 | if (*nbytes > count) | |
1867 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1868 | } |
1869 | ||
1870 | cifs_buf_release(pSMB); | |
1871 | ||
50c2f753 | 1872 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1873 | since file handle passed in no longer valid */ |
1874 | ||
1875 | return rc; | |
1876 | } | |
1877 | ||
c28c89fc JL |
1878 | void |
1879 | cifs_writedata_release(struct kref *refcount) | |
1880 | { | |
1881 | struct cifs_writedata *wdata = container_of(refcount, | |
1882 | struct cifs_writedata, refcount); | |
1883 | ||
1884 | if (wdata->cfile) | |
1885 | cifsFileInfo_put(wdata->cfile); | |
1886 | ||
1887 | kfree(wdata); | |
1888 | } | |
1889 | ||
1890 | /* | |
1891 | * Write failed with a retryable error. Resend the write request. It's also | |
1892 | * possible that the page was redirtied so re-clean the page. | |
1893 | */ | |
1894 | static void | |
1895 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1896 | { | |
1897 | int i, rc; | |
1898 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
c9de5c80 | 1899 | struct TCP_Server_Info *server; |
c28c89fc JL |
1900 | |
1901 | for (i = 0; i < wdata->nr_pages; i++) { | |
1902 | lock_page(wdata->pages[i]); | |
1903 | clear_page_dirty_for_io(wdata->pages[i]); | |
1904 | } | |
1905 | ||
1906 | do { | |
c9de5c80 PS |
1907 | server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
1908 | rc = server->ops->async_writev(wdata); | |
c28c89fc JL |
1909 | } while (rc == -EAGAIN); |
1910 | ||
1911 | for (i = 0; i < wdata->nr_pages; i++) { | |
1912 | if (rc != 0) | |
1913 | SetPageError(wdata->pages[i]); | |
1914 | unlock_page(wdata->pages[i]); | |
1915 | } | |
1916 | ||
1917 | mapping_set_error(inode->i_mapping, rc); | |
1918 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1919 | } | |
1920 | ||
c2e87640 | 1921 | void |
c28c89fc JL |
1922 | cifs_writev_complete(struct work_struct *work) |
1923 | { | |
1924 | struct cifs_writedata *wdata = container_of(work, | |
1925 | struct cifs_writedata, work); | |
1926 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1927 | int i = 0; | |
1928 | ||
1929 | if (wdata->result == 0) { | |
597b027f | 1930 | spin_lock(&inode->i_lock); |
c28c89fc | 1931 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1932 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1933 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1934 | wdata->bytes); | |
1935 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1936 | return cifs_writev_requeue(wdata); | |
1937 | ||
1938 | for (i = 0; i < wdata->nr_pages; i++) { | |
1939 | struct page *page = wdata->pages[i]; | |
1940 | if (wdata->result == -EAGAIN) | |
1941 | __set_page_dirty_nobuffers(page); | |
1942 | else if (wdata->result < 0) | |
1943 | SetPageError(page); | |
1944 | end_page_writeback(page); | |
1945 | page_cache_release(page); | |
1946 | } | |
1947 | if (wdata->result != -EAGAIN) | |
1948 | mapping_set_error(inode->i_mapping, wdata->result); | |
1949 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1950 | } | |
1951 | ||
1952 | struct cifs_writedata * | |
c2e87640 | 1953 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1954 | { |
1955 | struct cifs_writedata *wdata; | |
1956 | ||
1957 | /* this would overflow */ | |
1958 | if (nr_pages == 0) { | |
1959 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
1960 | return NULL; | |
1961 | } | |
1962 | ||
1963 | /* writedata + number of page pointers */ | |
1964 | wdata = kzalloc(sizeof(*wdata) + | |
1965 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1966 | if (wdata != NULL) { | |
c28c89fc | 1967 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1968 | INIT_LIST_HEAD(&wdata->list); |
1969 | init_completion(&wdata->done); | |
1970 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1971 | } |
1972 | return wdata; | |
1973 | } | |
1974 | ||
1975 | /* | |
7c9421e1 | 1976 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1977 | * workqueue completion task. |
1978 | */ | |
1979 | static void | |
1980 | cifs_writev_callback(struct mid_q_entry *mid) | |
1981 | { | |
1982 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1983 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1984 | unsigned int written; |
1985 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1986 | ||
7c9421e1 | 1987 | switch (mid->mid_state) { |
c28c89fc JL |
1988 | case MID_RESPONSE_RECEIVED: |
1989 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1990 | if (wdata->result != 0) | |
1991 | break; | |
1992 | ||
1993 | written = le16_to_cpu(smb->CountHigh); | |
1994 | written <<= 16; | |
1995 | written += le16_to_cpu(smb->Count); | |
1996 | /* | |
1997 | * Mask off high 16 bits when bytes written as returned | |
1998 | * by the server is greater than bytes requested by the | |
1999 | * client. OS/2 servers are known to set incorrect | |
2000 | * CountHigh values. | |
2001 | */ | |
2002 | if (written > wdata->bytes) | |
2003 | written &= 0xFFFF; | |
2004 | ||
2005 | if (written < wdata->bytes) | |
2006 | wdata->result = -ENOSPC; | |
2007 | else | |
2008 | wdata->bytes = written; | |
2009 | break; | |
2010 | case MID_REQUEST_SUBMITTED: | |
2011 | case MID_RETRY_NEEDED: | |
2012 | wdata->result = -EAGAIN; | |
2013 | break; | |
2014 | default: | |
2015 | wdata->result = -EIO; | |
2016 | break; | |
2017 | } | |
2018 | ||
da472fc8 | 2019 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2020 | DeleteMidQEntry(mid); |
a891f0f8 | 2021 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2022 | } |
2023 | ||
2024 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2025 | int | |
2026 | cifs_async_writev(struct cifs_writedata *wdata) | |
2027 | { | |
eddb079d | 2028 | int rc = -EACCES; |
c28c89fc JL |
2029 | WRITE_REQ *smb = NULL; |
2030 | int wct; | |
96daf2b0 | 2031 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079d | 2032 | struct kvec iov; |
fec344e3 | 2033 | struct smb_rqst rqst = { }; |
c28c89fc JL |
2034 | |
2035 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2036 | wct = 14; | |
2037 | } else { | |
2038 | wct = 12; | |
2039 | if (wdata->offset >> 32 > 0) { | |
2040 | /* can not handle big offset for old srv */ | |
2041 | return -EIO; | |
2042 | } | |
2043 | } | |
2044 | ||
2045 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2046 | if (rc) | |
2047 | goto async_writev_out; | |
2048 | ||
fe5f5d2e JL |
2049 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2050 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2051 | |
c28c89fc | 2052 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 2053 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
2054 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
2055 | if (wct == 14) | |
2056 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2057 | smb->Reserved = 0xFFFFFFFF; | |
2058 | smb->WriteMode = 0; | |
2059 | smb->Remaining = 0; | |
2060 | ||
2061 | smb->DataOffset = | |
2062 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2063 | ||
2064 | /* 4 for RFC1001 length + 1 for BCC */ | |
eddb079d JL |
2065 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; |
2066 | iov.iov_base = smb; | |
c28c89fc | 2067 | |
eddb079d JL |
2068 | rqst.rq_iov = &iov; |
2069 | rqst.rq_nvec = 1; | |
2070 | rqst.rq_pages = wdata->pages; | |
2071 | rqst.rq_npages = wdata->nr_pages; | |
2072 | rqst.rq_pagesz = wdata->pagesz; | |
2073 | rqst.rq_tailsz = wdata->tailsz; | |
c28c89fc JL |
2074 | |
2075 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
2076 | ||
2077 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2078 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2079 | ||
2080 | if (wct == 14) { | |
2081 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2082 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2083 | } else { | |
2084 | /* wct == 12 */ | |
2085 | struct smb_com_writex_req *smbw = | |
2086 | (struct smb_com_writex_req *)smb; | |
2087 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2088 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
eddb079d | 2089 | iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
2090 | } |
2091 | ||
2092 | kref_get(&wdata->refcount); | |
fec344e3 JL |
2093 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
2094 | cifs_writev_callback, wdata, 0); | |
c28c89fc JL |
2095 | |
2096 | if (rc == 0) | |
44c58186 | 2097 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc JL |
2098 | else |
2099 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2100 | ||
c28c89fc JL |
2101 | async_writev_out: |
2102 | cifs_small_buf_release(smb); | |
c28c89fc JL |
2103 | return rc; |
2104 | } | |
2105 | ||
d6e04ae6 | 2106 | int |
6d5786a3 | 2107 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 2108 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 LT |
2109 | { |
2110 | int rc = -EACCES; | |
2111 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2112 | int wct; |
d6e04ae6 | 2113 | int smb_hdr_len; |
ec637e3f | 2114 | int resp_buf_type = 0; |
fa2989f4 PS |
2115 | __u32 pid = io_parms->pid; |
2116 | __u16 netfid = io_parms->netfid; | |
2117 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2118 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2119 | unsigned int count = io_parms->length; |
1da177e4 | 2120 | |
fbec9ab9 JL |
2121 | *nbytes = 0; |
2122 | ||
b6b38f70 | 2123 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 2124 | |
4c3130ef | 2125 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2126 | wct = 14; |
4c3130ef | 2127 | } else { |
8cc64c6e | 2128 | wct = 12; |
4c3130ef SF |
2129 | if ((offset >> 32) > 0) { |
2130 | /* can not handle big offset for old srv */ | |
2131 | return -EIO; | |
2132 | } | |
2133 | } | |
8cc64c6e | 2134 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2135 | if (rc) |
2136 | return rc; | |
fa2989f4 PS |
2137 | |
2138 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2139 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2140 | ||
1da177e4 LT |
2141 | /* tcon and ses pointer are checked in smb_init */ |
2142 | if (tcon->ses->server == NULL) | |
2143 | return -ECONNABORTED; | |
2144 | ||
d6e04ae6 | 2145 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2146 | pSMB->Fid = netfid; |
2147 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2148 | if (wct == 14) |
8cc64c6e | 2149 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2150 | pSMB->Reserved = 0xFFFFFFFF; |
2151 | pSMB->WriteMode = 0; | |
2152 | pSMB->Remaining = 0; | |
d6e04ae6 | 2153 | |
1da177e4 | 2154 | pSMB->DataOffset = |
50c2f753 | 2155 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2156 | |
3e84469d SF |
2157 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2158 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2159 | /* header + 1 byte pad */ |
2160 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2161 | if (wct == 14) |
be8e3b00 | 2162 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2163 | else /* wct == 12 */ |
be8e3b00 | 2164 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2165 | if (wct == 14) |
8cc64c6e SF |
2166 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2167 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2168 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2169 | (struct smb_com_writex_req *)pSMB; |
2170 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2171 | } | |
3e84469d | 2172 | iov[0].iov_base = pSMB; |
790fe579 | 2173 | if (wct == 14) |
ec637e3f SF |
2174 | iov[0].iov_len = smb_hdr_len + 4; |
2175 | else /* wct == 12 pad bigger by four bytes */ | |
2176 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2177 | |
1da177e4 | 2178 | |
ba9ad725 | 2179 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c58186 | 2180 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2181 | if (rc) { |
b6b38f70 | 2182 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 2183 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2184 | /* presumably this can not happen, but best to be safe */ |
2185 | rc = -EIO; | |
d6e04ae6 | 2186 | } else { |
ad7a2926 | 2187 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2188 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2189 | *nbytes = (*nbytes) << 16; | |
2190 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2191 | |
2192 | /* | |
2193 | * Mask off high 16 bits when bytes written as returned by the | |
2194 | * server is greater than bytes requested by the client. OS/2 | |
2195 | * servers are known to set incorrect CountHigh values. | |
2196 | */ | |
2197 | if (*nbytes > count) | |
2198 | *nbytes &= 0xFFFF; | |
50c2f753 | 2199 | } |
1da177e4 | 2200 | |
4b8f930f | 2201 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2202 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2203 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2204 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2205 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2206 | |
50c2f753 | 2207 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2208 | since file handle passed in no longer valid */ |
2209 | ||
2210 | return rc; | |
2211 | } | |
d6e04ae6 | 2212 | |
6d5786a3 PS |
2213 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2214 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2215 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2216 | { | |
2217 | int rc = 0; | |
2218 | LOCK_REQ *pSMB = NULL; | |
2219 | struct kvec iov[2]; | |
2220 | int resp_buf_type; | |
2221 | __u16 count; | |
2222 | ||
2223 | cFYI(1, "cifs_lockv num lock %d num unlock %d", num_lock, num_unlock); | |
2224 | ||
2225 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2226 | if (rc) | |
2227 | return rc; | |
2228 | ||
2229 | pSMB->Timeout = 0; | |
2230 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2231 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2232 | pSMB->LockType = lock_type; | |
2233 | pSMB->AndXCommand = 0xFF; /* none */ | |
2234 | pSMB->Fid = netfid; /* netfid stays le */ | |
2235 | ||
2236 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2237 | inc_rfc1001_len(pSMB, count); | |
2238 | pSMB->ByteCount = cpu_to_le16(count); | |
2239 | ||
2240 | iov[0].iov_base = (char *)pSMB; | |
2241 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2242 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2243 | iov[1].iov_base = (char *)buf; | |
2244 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2245 | ||
44c58186 | 2246 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2247 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2248 | if (rc) | |
2249 | cFYI(1, "Send error in cifs_lockv = %d", rc); | |
2250 | ||
2251 | return rc; | |
2252 | } | |
d6e04ae6 | 2253 | |
1da177e4 | 2254 | int |
6d5786a3 | 2255 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2256 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2257 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2258 | const __u32 numLock, const __u8 lockType, |
2259 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2260 | { |
2261 | int rc = 0; | |
2262 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2263 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2264 | int bytes_returned; |
a891f0f8 | 2265 | int flags = 0; |
1da177e4 LT |
2266 | __u16 count; |
2267 | ||
b6b38f70 | 2268 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
2269 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2270 | ||
1da177e4 LT |
2271 | if (rc) |
2272 | return rc; | |
2273 | ||
790fe579 | 2274 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2275 | /* no response expected */ |
2276 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2277 | pSMB->Timeout = 0; |
4b18f2a9 | 2278 | } else if (waitFlag) { |
a891f0f8 | 2279 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2280 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2281 | } else { | |
2282 | pSMB->Timeout = 0; | |
2283 | } | |
2284 | ||
2285 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2286 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2287 | pSMB->LockType = lockType; | |
12fed00d | 2288 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2289 | pSMB->AndXCommand = 0xFF; /* none */ |
2290 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2291 | ||
790fe579 | 2292 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2293 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2294 | /* BB where to store pid high? */ |
2295 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2296 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2297 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2298 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2299 | count = sizeof(LOCKING_ANDX_RANGE); | |
2300 | } else { | |
2301 | /* oplock break */ | |
2302 | count = 0; | |
2303 | } | |
be8e3b00 | 2304 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2305 | pSMB->ByteCount = cpu_to_le16(count); |
2306 | ||
7ee1af76 JA |
2307 | if (waitFlag) { |
2308 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2309 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2310 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2311 | } else { |
a891f0f8 | 2312 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2313 | /* SMB buffer freed by function above */ |
7ee1af76 | 2314 | } |
44c58186 | 2315 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2316 | if (rc) |
b6b38f70 | 2317 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2318 | |
50c2f753 | 2319 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2320 | since file handle passed in no longer valid */ |
2321 | return rc; | |
2322 | } | |
2323 | ||
08547b03 | 2324 | int |
6d5786a3 | 2325 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2326 | const __u16 smb_file_id, const __u32 netpid, |
2327 | const loff_t start_offset, const __u64 len, | |
2328 | struct file_lock *pLockData, const __u16 lock_type, | |
2329 | const bool waitFlag) | |
08547b03 SF |
2330 | { |
2331 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2332 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2333 | struct cifs_posix_lock *parm_data; |
2334 | int rc = 0; | |
3a5ff61c | 2335 | int timeout = 0; |
08547b03 | 2336 | int bytes_returned = 0; |
133672ef | 2337 | int resp_buf_type = 0; |
08547b03 | 2338 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2339 | struct kvec iov[1]; |
08547b03 | 2340 | |
b6b38f70 | 2341 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2342 | |
08547b03 SF |
2343 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2344 | ||
2345 | if (rc) | |
2346 | return rc; | |
2347 | ||
2348 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2349 | ||
50c2f753 | 2350 | params = 6; |
08547b03 SF |
2351 | pSMB->MaxSetupCount = 0; |
2352 | pSMB->Reserved = 0; | |
2353 | pSMB->Flags = 0; | |
08547b03 SF |
2354 | pSMB->Reserved2 = 0; |
2355 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2356 | offset = param_offset + params; | |
2357 | ||
08547b03 SF |
2358 | count = sizeof(struct cifs_posix_lock); |
2359 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2360 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2361 | pSMB->SetupCount = 1; |
2362 | pSMB->Reserved3 = 0; | |
c5fd363d | 2363 | if (pLockData) |
08547b03 SF |
2364 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2365 | else | |
2366 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2367 | byte_count = 3 /* pad */ + params + count; | |
2368 | pSMB->DataCount = cpu_to_le16(count); | |
2369 | pSMB->ParameterCount = cpu_to_le16(params); | |
2370 | pSMB->TotalDataCount = pSMB->DataCount; | |
2371 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2372 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2373 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2374 | (((char *) &pSMB->hdr.Protocol) + offset); |
2375 | ||
2376 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2377 | if (waitFlag) { |
133672ef | 2378 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2379 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2380 | pSMB->Timeout = cpu_to_le32(-1); |
2381 | } else | |
2382 | pSMB->Timeout = 0; | |
2383 | ||
4f6bcec9 | 2384 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2385 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2386 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2387 | |
2388 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2389 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2390 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2391 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2392 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2393 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2394 | if (waitFlag) { |
2395 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2396 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2397 | } else { | |
133672ef | 2398 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2399 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2400 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2401 | &resp_buf_type, timeout); | |
2402 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2403 | not try to free it twice below on exit */ | |
2404 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2405 | } |
2406 | ||
08547b03 | 2407 | if (rc) { |
b6b38f70 | 2408 | cFYI(1, "Send error in Posix Lock = %d", rc); |
c5fd363d | 2409 | } else if (pLockData) { |
fc94cdb9 SF |
2410 | /* lock structure can be returned on get */ |
2411 | __u16 data_offset; | |
2412 | __u16 data_count; | |
2413 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2414 | ||
820a803f | 2415 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2416 | rc = -EIO; /* bad smb */ |
2417 | goto plk_err_exit; | |
2418 | } | |
fc94cdb9 SF |
2419 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2420 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2421 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2422 | rc = -EIO; |
2423 | goto plk_err_exit; | |
2424 | } | |
2425 | parm_data = (struct cifs_posix_lock *) | |
2426 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2427 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2428 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2429 | else { |
2430 | if (parm_data->lock_type == | |
2431 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2432 | pLockData->fl_type = F_RDLCK; | |
2433 | else if (parm_data->lock_type == | |
2434 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2435 | pLockData->fl_type = F_WRLCK; | |
2436 | ||
5443d130 SF |
2437 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2438 | pLockData->fl_end = pLockData->fl_start + | |
2439 | le64_to_cpu(parm_data->length) - 1; | |
2440 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2441 | } |
08547b03 | 2442 | } |
50c2f753 | 2443 | |
fc94cdb9 | 2444 | plk_err_exit: |
08547b03 SF |
2445 | if (pSMB) |
2446 | cifs_small_buf_release(pSMB); | |
2447 | ||
133672ef SF |
2448 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2449 | cifs_small_buf_release(iov[0].iov_base); | |
2450 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2451 | cifs_buf_release(iov[0].iov_base); | |
2452 | ||
08547b03 SF |
2453 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2454 | since file handle passed in no longer valid */ | |
2455 | ||
2456 | return rc; | |
2457 | } | |
2458 | ||
2459 | ||
1da177e4 | 2460 | int |
6d5786a3 | 2461 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2462 | { |
2463 | int rc = 0; | |
2464 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2465 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2466 | |
2467 | /* do not retry on dead session on close */ | |
2468 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2469 | if (rc == -EAGAIN) |
1da177e4 LT |
2470 | return 0; |
2471 | if (rc) | |
2472 | return rc; | |
2473 | ||
1da177e4 | 2474 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2475 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2476 | pSMB->ByteCount = 0; |
792af7b0 | 2477 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2478 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2479 | if (rc) { |
790fe579 | 2480 | if (rc != -EINTR) { |
1da177e4 | 2481 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2482 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2483 | } |
2484 | } | |
2485 | ||
1da177e4 | 2486 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2487 | if (rc == -EAGAIN) |
1da177e4 LT |
2488 | rc = 0; |
2489 | ||
2490 | return rc; | |
2491 | } | |
2492 | ||
b298f223 | 2493 | int |
6d5786a3 | 2494 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2495 | { |
2496 | int rc = 0; | |
2497 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2498 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2499 | |
2500 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2501 | if (rc) | |
2502 | return rc; | |
2503 | ||
2504 | pSMB->FileID = (__u16) smb_file_id; | |
2505 | pSMB->ByteCount = 0; | |
792af7b0 | 2506 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2507 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2508 | if (rc) |
b6b38f70 | 2509 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2510 | |
2511 | return rc; | |
2512 | } | |
2513 | ||
1da177e4 | 2514 | int |
6d5786a3 | 2515 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2516 | const char *from_name, const char *to_name, |
2517 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2518 | { |
2519 | int rc = 0; | |
2520 | RENAME_REQ *pSMB = NULL; | |
2521 | RENAME_RSP *pSMBr = NULL; | |
2522 | int bytes_returned; | |
2523 | int name_len, name_len2; | |
2524 | __u16 count; | |
8ceb9843 | 2525 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2526 | |
b6b38f70 | 2527 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2528 | renameRetry: |
2529 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2530 | (void **) &pSMBr); | |
2531 | if (rc) | |
2532 | return rc; | |
2533 | ||
2534 | pSMB->BufferFormat = 0x04; | |
2535 | pSMB->SearchAttributes = | |
2536 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2537 | ATTR_DIRECTORY); | |
2538 | ||
2539 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2540 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2541 | from_name, PATH_MAX, | |
2542 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2543 | name_len++; /* trailing null */ |
2544 | name_len *= 2; | |
2545 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2546 | /* protocol requires ASCII signature byte on Unicode string */ | |
2547 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2548 | name_len2 = | |
acbbb76a | 2549 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2550 | to_name, PATH_MAX, cifs_sb->local_nls, |
2551 | remap); | |
1da177e4 LT |
2552 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2553 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2554 | } else { /* BB improve the check for buffer overruns BB */ |
8ceb9843 | 2555 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2556 | name_len++; /* trailing null */ |
8ceb9843 PS |
2557 | strncpy(pSMB->OldFileName, from_name, name_len); |
2558 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2559 | name_len2++; /* trailing null */ |
2560 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
8ceb9843 | 2561 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2562 | name_len2++; /* trailing null */ |
2563 | name_len2++; /* signature byte */ | |
2564 | } | |
2565 | ||
2566 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2567 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2568 | pSMB->ByteCount = cpu_to_le16(count); |
2569 | ||
2570 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2571 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2572 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2573 | if (rc) |
b6b38f70 | 2574 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2575 | |
1da177e4 LT |
2576 | cifs_buf_release(pSMB); |
2577 | ||
2578 | if (rc == -EAGAIN) | |
2579 | goto renameRetry; | |
2580 | ||
2581 | return rc; | |
2582 | } | |
2583 | ||
6d5786a3 | 2584 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2585 | int netfid, const char *target_name, |
50c2f753 | 2586 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2587 | { |
2588 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2589 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2590 | struct set_file_rename *rename_info; |
1da177e4 LT |
2591 | char *data_offset; |
2592 | char dummy_string[30]; | |
2593 | int rc = 0; | |
2594 | int bytes_returned = 0; | |
2595 | int len_of_str; | |
2596 | __u16 params, param_offset, offset, count, byte_count; | |
2597 | ||
b6b38f70 | 2598 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2599 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2600 | (void **) &pSMBr); | |
2601 | if (rc) | |
2602 | return rc; | |
2603 | ||
2604 | params = 6; | |
2605 | pSMB->MaxSetupCount = 0; | |
2606 | pSMB->Reserved = 0; | |
2607 | pSMB->Flags = 0; | |
2608 | pSMB->Timeout = 0; | |
2609 | pSMB->Reserved2 = 0; | |
2610 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2611 | offset = param_offset + params; | |
2612 | ||
2613 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2614 | rename_info = (struct set_file_rename *) data_offset; | |
2615 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2616 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2617 | pSMB->SetupCount = 1; |
2618 | pSMB->Reserved3 = 0; | |
2619 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2620 | byte_count = 3 /* pad */ + params; | |
2621 | pSMB->ParameterCount = cpu_to_le16(params); | |
2622 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2623 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2624 | pSMB->DataOffset = cpu_to_le16(offset); | |
2625 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2626 | rename_info->overwrite = cpu_to_le32(1); | |
2627 | rename_info->root_fid = 0; | |
2628 | /* unicode only call */ | |
790fe579 | 2629 | if (target_name == NULL) { |
50c2f753 | 2630 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2631 | len_of_str = |
2632 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2633 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2634 | } else { |
acbbb76a SF |
2635 | len_of_str = |
2636 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2637 | target_name, PATH_MAX, nls_codepage, |
2638 | remap); | |
1da177e4 LT |
2639 | } |
2640 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2641 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2642 | byte_count += count; |
2643 | pSMB->DataCount = cpu_to_le16(count); | |
2644 | pSMB->TotalDataCount = pSMB->DataCount; | |
2645 | pSMB->Fid = netfid; | |
2646 | pSMB->InformationLevel = | |
2647 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2648 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2649 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2650 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2651 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2652 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2653 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2654 | if (rc) |
b6b38f70 | 2655 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2656 | |
1da177e4 LT |
2657 | cifs_buf_release(pSMB); |
2658 | ||
2659 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2660 | since file handle passed in no longer valid */ | |
2661 | ||
2662 | return rc; | |
2663 | } | |
2664 | ||
2665 | int | |
6d5786a3 PS |
2666 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2667 | const char *fromName, const __u16 target_tid, const char *toName, | |
2668 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2669 | { |
2670 | int rc = 0; | |
2671 | COPY_REQ *pSMB = NULL; | |
2672 | COPY_RSP *pSMBr = NULL; | |
2673 | int bytes_returned; | |
2674 | int name_len, name_len2; | |
2675 | __u16 count; | |
2676 | ||
b6b38f70 | 2677 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2678 | copyRetry: |
2679 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2680 | (void **) &pSMBr); | |
2681 | if (rc) | |
2682 | return rc; | |
2683 | ||
2684 | pSMB->BufferFormat = 0x04; | |
2685 | pSMB->Tid2 = target_tid; | |
2686 | ||
2687 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2688 | ||
2689 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2690 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2691 | fromName, PATH_MAX, nls_codepage, | |
2692 | remap); | |
1da177e4 LT |
2693 | name_len++; /* trailing null */ |
2694 | name_len *= 2; | |
2695 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2696 | /* protocol requires ASCII signature byte on Unicode string */ | |
2697 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2698 | name_len2 = |
acbbb76a SF |
2699 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2700 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2701 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2702 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2703 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2704 | name_len = strnlen(fromName, PATH_MAX); |
2705 | name_len++; /* trailing null */ | |
2706 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2707 | name_len2 = strnlen(toName, PATH_MAX); | |
2708 | name_len2++; /* trailing null */ | |
2709 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2710 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2711 | name_len2++; /* trailing null */ | |
2712 | name_len2++; /* signature byte */ | |
2713 | } | |
2714 | ||
2715 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2716 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2717 | pSMB->ByteCount = cpu_to_le16(count); |
2718 | ||
2719 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2720 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2721 | if (rc) { | |
b6b38f70 JP |
2722 | cFYI(1, "Send error in copy = %d with %d files copied", |
2723 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2724 | } |
0d817bc0 | 2725 | cifs_buf_release(pSMB); |
1da177e4 LT |
2726 | |
2727 | if (rc == -EAGAIN) | |
2728 | goto copyRetry; | |
2729 | ||
2730 | return rc; | |
2731 | } | |
2732 | ||
2733 | int | |
6d5786a3 | 2734 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2735 | const char *fromName, const char *toName, |
2736 | const struct nls_table *nls_codepage) | |
2737 | { | |
2738 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2739 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2740 | char *data_offset; | |
2741 | int name_len; | |
2742 | int name_len_target; | |
2743 | int rc = 0; | |
2744 | int bytes_returned = 0; | |
2745 | __u16 params, param_offset, offset, byte_count; | |
2746 | ||
b6b38f70 | 2747 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2748 | createSymLinkRetry: |
2749 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2750 | (void **) &pSMBr); | |
2751 | if (rc) | |
2752 | return rc; | |
2753 | ||
2754 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2755 | name_len = | |
acbbb76a SF |
2756 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2757 | /* find define for this maxpathcomponent */ | |
2758 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2759 | name_len++; /* trailing null */ |
2760 | name_len *= 2; | |
2761 | ||
50c2f753 | 2762 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2763 | name_len = strnlen(fromName, PATH_MAX); |
2764 | name_len++; /* trailing null */ | |
2765 | strncpy(pSMB->FileName, fromName, name_len); | |
2766 | } | |
2767 | params = 6 + name_len; | |
2768 | pSMB->MaxSetupCount = 0; | |
2769 | pSMB->Reserved = 0; | |
2770 | pSMB->Flags = 0; | |
2771 | pSMB->Timeout = 0; | |
2772 | pSMB->Reserved2 = 0; | |
2773 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2774 | InformationLevel) - 4; |
1da177e4 LT |
2775 | offset = param_offset + params; |
2776 | ||
2777 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2778 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2779 | name_len_target = | |
acbbb76a SF |
2780 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2781 | /* find define for this maxpathcomponent */ | |
2782 | , nls_codepage); | |
1da177e4 LT |
2783 | name_len_target++; /* trailing null */ |
2784 | name_len_target *= 2; | |
50c2f753 | 2785 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2786 | name_len_target = strnlen(toName, PATH_MAX); |
2787 | name_len_target++; /* trailing null */ | |
2788 | strncpy(data_offset, toName, name_len_target); | |
2789 | } | |
2790 | ||
2791 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2792 | /* BB find exact max on data count below from sess */ | |
2793 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2794 | pSMB->SetupCount = 1; | |
2795 | pSMB->Reserved3 = 0; | |
2796 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2797 | byte_count = 3 /* pad */ + params + name_len_target; | |
2798 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2799 | pSMB->ParameterCount = cpu_to_le16(params); | |
2800 | pSMB->TotalDataCount = pSMB->DataCount; | |
2801 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2802 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2803 | pSMB->DataOffset = cpu_to_le16(offset); | |
2804 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2805 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2806 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2807 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2808 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2809 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2810 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2811 | if (rc) |
b6b38f70 | 2812 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2813 | |
0d817bc0 | 2814 | cifs_buf_release(pSMB); |
1da177e4 LT |
2815 | |
2816 | if (rc == -EAGAIN) | |
2817 | goto createSymLinkRetry; | |
2818 | ||
2819 | return rc; | |
2820 | } | |
2821 | ||
2822 | int | |
6d5786a3 | 2823 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2824 | const char *fromName, const char *toName, |
737b758c | 2825 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2826 | { |
2827 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2828 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2829 | char *data_offset; | |
2830 | int name_len; | |
2831 | int name_len_target; | |
2832 | int rc = 0; | |
2833 | int bytes_returned = 0; | |
2834 | __u16 params, param_offset, offset, byte_count; | |
2835 | ||
b6b38f70 | 2836 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2837 | createHardLinkRetry: |
2838 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2839 | (void **) &pSMBr); | |
2840 | if (rc) | |
2841 | return rc; | |
2842 | ||
2843 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2844 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2845 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2846 | name_len++; /* trailing null */ |
2847 | name_len *= 2; | |
2848 | ||
50c2f753 | 2849 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2850 | name_len = strnlen(toName, PATH_MAX); |
2851 | name_len++; /* trailing null */ | |
2852 | strncpy(pSMB->FileName, toName, name_len); | |
2853 | } | |
2854 | params = 6 + name_len; | |
2855 | pSMB->MaxSetupCount = 0; | |
2856 | pSMB->Reserved = 0; | |
2857 | pSMB->Flags = 0; | |
2858 | pSMB->Timeout = 0; | |
2859 | pSMB->Reserved2 = 0; | |
2860 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2861 | InformationLevel) - 4; |
1da177e4 LT |
2862 | offset = param_offset + params; |
2863 | ||
2864 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2865 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2866 | name_len_target = | |
acbbb76a SF |
2867 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2868 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2869 | name_len_target++; /* trailing null */ |
2870 | name_len_target *= 2; | |
50c2f753 | 2871 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2872 | name_len_target = strnlen(fromName, PATH_MAX); |
2873 | name_len_target++; /* trailing null */ | |
2874 | strncpy(data_offset, fromName, name_len_target); | |
2875 | } | |
2876 | ||
2877 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2878 | /* BB find exact max on data count below from sess*/ | |
2879 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2880 | pSMB->SetupCount = 1; | |
2881 | pSMB->Reserved3 = 0; | |
2882 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2883 | byte_count = 3 /* pad */ + params + name_len_target; | |
2884 | pSMB->ParameterCount = cpu_to_le16(params); | |
2885 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2886 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2887 | pSMB->TotalDataCount = pSMB->DataCount; | |
2888 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2889 | pSMB->DataOffset = cpu_to_le16(offset); | |
2890 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2891 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2892 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2893 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2894 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2895 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2896 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2897 | if (rc) |
b6b38f70 | 2898 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2899 | |
2900 | cifs_buf_release(pSMB); | |
2901 | if (rc == -EAGAIN) | |
2902 | goto createHardLinkRetry; | |
2903 | ||
2904 | return rc; | |
2905 | } | |
2906 | ||
2907 | int | |
6d5786a3 | 2908 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2909 | const char *from_name, const char *to_name, |
2910 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2911 | { |
2912 | int rc = 0; | |
2913 | NT_RENAME_REQ *pSMB = NULL; | |
2914 | RENAME_RSP *pSMBr = NULL; | |
2915 | int bytes_returned; | |
2916 | int name_len, name_len2; | |
2917 | __u16 count; | |
d6e906f1 | 2918 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 2919 | |
b6b38f70 | 2920 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2921 | winCreateHardLinkRetry: |
2922 | ||
2923 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2924 | (void **) &pSMBr); | |
2925 | if (rc) | |
2926 | return rc; | |
2927 | ||
2928 | pSMB->SearchAttributes = | |
2929 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2930 | ATTR_DIRECTORY); | |
2931 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2932 | pSMB->ClusterCount = 0; | |
2933 | ||
2934 | pSMB->BufferFormat = 0x04; | |
2935 | ||
2936 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2937 | name_len = | |
d6e906f1 SF |
2938 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2939 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2940 | name_len++; /* trailing null */ |
2941 | name_len *= 2; | |
fcc7c09d JL |
2942 | |
2943 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2944 | pSMB->OldFileName[name_len] = 0x04; | |
2945 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2946 | name_len2 = |
acbbb76a | 2947 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2948 | to_name, PATH_MAX, cifs_sb->local_nls, |
2949 | remap); | |
1da177e4 LT |
2950 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2951 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2952 | } else { /* BB improve the check for buffer overruns BB */ |
d6e906f1 | 2953 | name_len = strnlen(from_name, PATH_MAX); |
1da177e4 | 2954 | name_len++; /* trailing null */ |
d6e906f1 SF |
2955 | strncpy(pSMB->OldFileName, from_name, name_len); |
2956 | name_len2 = strnlen(to_name, PATH_MAX); | |
1da177e4 LT |
2957 | name_len2++; /* trailing null */ |
2958 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
d6e906f1 | 2959 | strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4 LT |
2960 | name_len2++; /* trailing null */ |
2961 | name_len2++; /* signature byte */ | |
2962 | } | |
2963 | ||
2964 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2965 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2966 | pSMB->ByteCount = cpu_to_le16(count); |
2967 | ||
2968 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2969 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2970 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2971 | if (rc) |
b6b38f70 | 2972 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2973 | |
1da177e4 LT |
2974 | cifs_buf_release(pSMB); |
2975 | if (rc == -EAGAIN) | |
2976 | goto winCreateHardLinkRetry; | |
2977 | ||
2978 | return rc; | |
2979 | } | |
2980 | ||
2981 | int | |
6d5786a3 | 2982 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2983 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2984 | const struct nls_table *nls_codepage) |
2985 | { | |
2986 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2987 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2988 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2989 | int rc = 0; | |
2990 | int bytes_returned; | |
2991 | int name_len; | |
2992 | __u16 params, byte_count; | |
460b9696 | 2993 | char *data_start; |
1da177e4 | 2994 | |
b6b38f70 | 2995 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2996 | |
2997 | querySymLinkRetry: | |
2998 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2999 | (void **) &pSMBr); | |
3000 | if (rc) | |
3001 | return rc; | |
3002 | ||
3003 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3004 | name_len = | |
acbbb76a SF |
3005 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3006 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3007 | name_len++; /* trailing null */ |
3008 | name_len *= 2; | |
50c2f753 | 3009 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3010 | name_len = strnlen(searchName, PATH_MAX); |
3011 | name_len++; /* trailing null */ | |
3012 | strncpy(pSMB->FileName, searchName, name_len); | |
3013 | } | |
3014 | ||
3015 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3016 | pSMB->TotalDataCount = 0; | |
3017 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3018 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3019 | pSMB->MaxSetupCount = 0; |
3020 | pSMB->Reserved = 0; | |
3021 | pSMB->Flags = 0; | |
3022 | pSMB->Timeout = 0; | |
3023 | pSMB->Reserved2 = 0; | |
3024 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3025 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3026 | pSMB->DataCount = 0; |
3027 | pSMB->DataOffset = 0; | |
3028 | pSMB->SetupCount = 1; | |
3029 | pSMB->Reserved3 = 0; | |
3030 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3031 | byte_count = params + 1 /* pad */ ; | |
3032 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3033 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3034 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3035 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3036 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3037 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3038 | ||
3039 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3040 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3041 | if (rc) { | |
b6b38f70 | 3042 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
3043 | } else { |
3044 | /* decode response */ | |
3045 | ||
3046 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3047 | /* BB also check enough total bytes returned */ |
820a803f | 3048 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3049 | rc = -EIO; |
1da177e4 | 3050 | else { |
0e0d2cf3 | 3051 | bool is_unicode; |
460b9696 JL |
3052 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3053 | ||
3054 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3055 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3056 | |
0e0d2cf3 SF |
3057 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3058 | is_unicode = true; | |
3059 | else | |
3060 | is_unicode = false; | |
3061 | ||
737b758c | 3062 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3063 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3064 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3065 | if (!*symlinkinfo) |
460b9696 | 3066 | rc = -ENOMEM; |
1da177e4 LT |
3067 | } |
3068 | } | |
3069 | cifs_buf_release(pSMB); | |
3070 | if (rc == -EAGAIN) | |
3071 | goto querySymLinkRetry; | |
3072 | return rc; | |
3073 | } | |
3074 | ||
c52a9554 SF |
3075 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3076 | /* | |
3077 | * Recent Windows versions now create symlinks more frequently | |
3078 | * and they use the "reparse point" mechanism below. We can of course | |
3079 | * do symlinks nicely to Samba and other servers which support the | |
3080 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3081 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3082 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3083 | * In the interim this code has been moved to its own config option so | |
3084 | * it is not compiled in by default until callers fixed up and more tested. | |
3085 | */ | |
1da177e4 | 3086 | int |
6d5786a3 | 3087 | CIFSSMBQueryReparseLinkInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3088 | const unsigned char *searchName, |
50c2f753 | 3089 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3090 | const struct nls_table *nls_codepage) |
3091 | { | |
3092 | int rc = 0; | |
3093 | int bytes_returned; | |
50c2f753 SF |
3094 | struct smb_com_transaction_ioctl_req *pSMB; |
3095 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3096 | |
b6b38f70 | 3097 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
3098 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3099 | (void **) &pSMBr); | |
3100 | if (rc) | |
3101 | return rc; | |
3102 | ||
3103 | pSMB->TotalParameterCount = 0 ; | |
3104 | pSMB->TotalDataCount = 0; | |
3105 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3106 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3107 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3108 | pSMB->MaxSetupCount = 4; |
3109 | pSMB->Reserved = 0; | |
3110 | pSMB->ParameterOffset = 0; | |
3111 | pSMB->DataCount = 0; | |
3112 | pSMB->DataOffset = 0; | |
3113 | pSMB->SetupCount = 4; | |
3114 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3115 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3116 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3117 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3118 | pSMB->IsRootFlag = 0; | |
3119 | pSMB->Fid = fid; /* file handle always le */ | |
3120 | pSMB->ByteCount = 0; | |
3121 | ||
3122 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3123 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3124 | if (rc) { | |
b6b38f70 | 3125 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
3126 | } else { /* decode response */ |
3127 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3128 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3129 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3130 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3131 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3132 | goto qreparse_out; |
3133 | } | |
3134 | if (data_count && (data_count < 2048)) { | |
3135 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3136 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3137 | |
afe48c31 | 3138 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3139 | (struct reparse_data *) |
3140 | ((char *)&pSMBr->hdr.Protocol | |
3141 | + data_offset); | |
afe48c31 SF |
3142 | if ((char *)reparse_buf >= end_of_smb) { |
3143 | rc = -EIO; | |
3144 | goto qreparse_out; | |
3145 | } | |
3146 | if ((reparse_buf->LinkNamesBuf + | |
3147 | reparse_buf->TargetNameOffset + | |
3148 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 3149 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
3150 | rc = -EIO; |
3151 | goto qreparse_out; | |
3152 | } | |
50c2f753 | 3153 | |
afe48c31 SF |
3154 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3155 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3156 | (reparse_buf->LinkNamesBuf + |
3157 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3158 | buflen, |
3159 | reparse_buf->TargetNameLen, | |
3160 | nls_codepage, 0); | |
3161 | } else { /* ASCII names */ | |
3162 | strncpy(symlinkinfo, | |
3163 | reparse_buf->LinkNamesBuf + | |
3164 | reparse_buf->TargetNameOffset, | |
3165 | min_t(const int, buflen, | |
3166 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3167 | } |
afe48c31 SF |
3168 | } else { |
3169 | rc = -EIO; | |
b6b38f70 JP |
3170 | cFYI(1, "Invalid return data count on " |
3171 | "get reparse info ioctl"); | |
1da177e4 | 3172 | } |
afe48c31 SF |
3173 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3174 | does not go off the end of the buffer */ | |
b6b38f70 | 3175 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 3176 | } |
989c7e51 | 3177 | |
1da177e4 | 3178 | qreparse_out: |
4a6d87f1 | 3179 | cifs_buf_release(pSMB); |
1da177e4 LT |
3180 | |
3181 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3182 | since file handle passed in no longer valid */ | |
3183 | ||
3184 | return rc; | |
3185 | } | |
c52a9554 | 3186 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3187 | |
3188 | #ifdef CONFIG_CIFS_POSIX | |
3189 | ||
3190 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3191 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3192 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3193 | { |
3194 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3195 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3196 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3197 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 3198 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
3199 | |
3200 | return; | |
3201 | } | |
3202 | ||
3203 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3204 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3205 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3206 | { |
3207 | int size = 0; | |
3208 | int i; | |
3209 | __u16 count; | |
50c2f753 SF |
3210 | struct cifs_posix_ace *pACE; |
3211 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3212 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3213 | |
3214 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3215 | return -EOPNOTSUPP; | |
3216 | ||
790fe579 | 3217 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3218 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3219 | pACE = &cifs_acl->ace_array[0]; | |
3220 | size = sizeof(struct cifs_posix_acl); | |
3221 | size += sizeof(struct cifs_posix_ace) * count; | |
3222 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3223 | if (size_of_data_area < size) { |
b6b38f70 JP |
3224 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
3225 | size_of_data_area, size); | |
1da177e4 LT |
3226 | return -EINVAL; |
3227 | } | |
790fe579 | 3228 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3229 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3230 | size = sizeof(struct cifs_posix_acl); | |
3231 | size += sizeof(struct cifs_posix_ace) * count; | |
3232 | /* skip past access ACEs to get to default ACEs */ | |
3233 | pACE = &cifs_acl->ace_array[count]; | |
3234 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3235 | size += sizeof(struct cifs_posix_ace) * count; | |
3236 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3237 | if (size_of_data_area < size) |
1da177e4 LT |
3238 | return -EINVAL; |
3239 | } else { | |
3240 | /* illegal type */ | |
3241 | return -EINVAL; | |
3242 | } | |
3243 | ||
3244 | size = posix_acl_xattr_size(count); | |
790fe579 | 3245 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3246 | /* used to query ACL EA size */ |
790fe579 | 3247 | } else if (size > buflen) { |
1da177e4 LT |
3248 | return -ERANGE; |
3249 | } else /* buffer big enough */ { | |
ff7feac9 | 3250 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3251 | for (i = 0; i < count ; i++) { |
3252 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3253 | pACE++; | |
1da177e4 LT |
3254 | } |
3255 | } | |
3256 | return size; | |
3257 | } | |
3258 | ||
50c2f753 SF |
3259 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3260 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3261 | { |
3262 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3263 | ||
ff7feac9 SF |
3264 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3265 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3266 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3267 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3268 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3269 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3270 | } else |
ff7feac9 | 3271 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 3272 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
3273 | return rc; |
3274 | } | |
3275 | ||
3276 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3277 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3278 | const int buflen, const int acl_type) | |
1da177e4 LT |
3279 | { |
3280 | __u16 rc = 0; | |
50c2f753 SF |
3281 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3282 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3283 | int count; |
3284 | int i; | |
3285 | ||
790fe579 | 3286 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3287 | return 0; |
3288 | ||
3289 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 3290 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 3291 | "version of %d", |
b6b38f70 | 3292 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 3293 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3294 | cFYI(1, "unknown POSIX ACL version %d", |
3295 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3296 | return 0; |
3297 | } | |
3298 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3299 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3300 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3301 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3302 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3303 | else { |
b6b38f70 | 3304 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3305 | return 0; |
3306 | } | |
50c2f753 | 3307 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3308 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3309 | &local_acl->a_entries[i]); | |
790fe579 | 3310 | if (rc != 0) { |
1da177e4 LT |
3311 | /* ACE not converted */ |
3312 | break; | |
3313 | } | |
3314 | } | |
790fe579 | 3315 | if (rc == 0) { |
1da177e4 LT |
3316 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3317 | rc += sizeof(struct cifs_posix_acl); | |
3318 | /* BB add check to make sure ACL does not overflow SMB */ | |
3319 | } | |
3320 | return rc; | |
3321 | } | |
3322 | ||
3323 | int | |
6d5786a3 | 3324 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3325 | const unsigned char *searchName, |
3326 | char *acl_inf, const int buflen, const int acl_type, | |
3327 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3328 | { |
3329 | /* SMB_QUERY_POSIX_ACL */ | |
3330 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3331 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3332 | int rc = 0; | |
3333 | int bytes_returned; | |
3334 | int name_len; | |
3335 | __u16 params, byte_count; | |
50c2f753 | 3336 | |
b6b38f70 | 3337 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3338 | |
3339 | queryAclRetry: | |
3340 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3341 | (void **) &pSMBr); | |
3342 | if (rc) | |
3343 | return rc; | |
50c2f753 | 3344 | |
1da177e4 LT |
3345 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3346 | name_len = | |
acbbb76a SF |
3347 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3348 | searchName, PATH_MAX, nls_codepage, | |
3349 | remap); | |
1da177e4 LT |
3350 | name_len++; /* trailing null */ |
3351 | name_len *= 2; | |
3352 | pSMB->FileName[name_len] = 0; | |
3353 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3354 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3355 | name_len = strnlen(searchName, PATH_MAX); |
3356 | name_len++; /* trailing null */ | |
3357 | strncpy(pSMB->FileName, searchName, name_len); | |
3358 | } | |
3359 | ||
3360 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3361 | pSMB->TotalDataCount = 0; | |
3362 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3363 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3364 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3365 | pSMB->MaxSetupCount = 0; | |
3366 | pSMB->Reserved = 0; | |
3367 | pSMB->Flags = 0; | |
3368 | pSMB->Timeout = 0; | |
3369 | pSMB->Reserved2 = 0; | |
3370 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3371 | offsetof(struct smb_com_transaction2_qpi_req, |
3372 | InformationLevel) - 4); | |
1da177e4 LT |
3373 | pSMB->DataCount = 0; |
3374 | pSMB->DataOffset = 0; | |
3375 | pSMB->SetupCount = 1; | |
3376 | pSMB->Reserved3 = 0; | |
3377 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3378 | byte_count = params + 1 /* pad */ ; | |
3379 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3380 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3381 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3382 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3383 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3384 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3385 | ||
3386 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3387 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3388 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3389 | if (rc) { |
b6b38f70 | 3390 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3391 | } else { |
3392 | /* decode response */ | |
50c2f753 | 3393 | |
1da177e4 | 3394 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3395 | /* BB also check enough total bytes returned */ |
820a803f | 3396 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3397 | rc = -EIO; /* bad smb */ |
3398 | else { | |
3399 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3400 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3401 | rc = cifs_copy_posix_acl(acl_inf, | |
3402 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3403 | buflen, acl_type, count); |
1da177e4 LT |
3404 | } |
3405 | } | |
3406 | cifs_buf_release(pSMB); | |
3407 | if (rc == -EAGAIN) | |
3408 | goto queryAclRetry; | |
3409 | return rc; | |
3410 | } | |
3411 | ||
3412 | int | |
6d5786a3 | 3413 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3414 | const unsigned char *fileName, |
3415 | const char *local_acl, const int buflen, | |
3416 | const int acl_type, | |
3417 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3418 | { |
3419 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3420 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3421 | char *parm_data; | |
3422 | int name_len; | |
3423 | int rc = 0; | |
3424 | int bytes_returned = 0; | |
3425 | __u16 params, byte_count, data_count, param_offset, offset; | |
3426 | ||
b6b38f70 | 3427 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3428 | setAclRetry: |
3429 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3430 | (void **) &pSMBr); |
1da177e4 LT |
3431 | if (rc) |
3432 | return rc; | |
3433 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3434 | name_len = | |
acbbb76a SF |
3435 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3436 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3437 | name_len++; /* trailing null */ |
3438 | name_len *= 2; | |
50c2f753 | 3439 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3440 | name_len = strnlen(fileName, PATH_MAX); |
3441 | name_len++; /* trailing null */ | |
3442 | strncpy(pSMB->FileName, fileName, name_len); | |
3443 | } | |
3444 | params = 6 + name_len; | |
3445 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3446 | /* BB find max SMB size from sess */ |
3447 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3448 | pSMB->MaxSetupCount = 0; |
3449 | pSMB->Reserved = 0; | |
3450 | pSMB->Flags = 0; | |
3451 | pSMB->Timeout = 0; | |
3452 | pSMB->Reserved2 = 0; | |
3453 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3454 | InformationLevel) - 4; |
1da177e4 LT |
3455 | offset = param_offset + params; |
3456 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3457 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3458 | ||
3459 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3460 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3461 | |
790fe579 | 3462 | if (data_count == 0) { |
1da177e4 LT |
3463 | rc = -EOPNOTSUPP; |
3464 | goto setACLerrorExit; | |
3465 | } | |
3466 | pSMB->DataOffset = cpu_to_le16(offset); | |
3467 | pSMB->SetupCount = 1; | |
3468 | pSMB->Reserved3 = 0; | |
3469 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3470 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3471 | byte_count = 3 /* pad */ + params + data_count; | |
3472 | pSMB->DataCount = cpu_to_le16(data_count); | |
3473 | pSMB->TotalDataCount = pSMB->DataCount; | |
3474 | pSMB->ParameterCount = cpu_to_le16(params); | |
3475 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3476 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3477 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3478 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3479 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3480 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3481 | if (rc) |
b6b38f70 | 3482 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3483 | |
3484 | setACLerrorExit: | |
3485 | cifs_buf_release(pSMB); | |
3486 | if (rc == -EAGAIN) | |
3487 | goto setAclRetry; | |
3488 | return rc; | |
3489 | } | |
3490 | ||
f654bac2 SF |
3491 | /* BB fix tabs in this function FIXME BB */ |
3492 | int | |
6d5786a3 | 3493 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3494 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3495 | { |
50c2f753 SF |
3496 | int rc = 0; |
3497 | struct smb_t2_qfi_req *pSMB = NULL; | |
3498 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3499 | int bytes_returned; | |
3500 | __u16 params, byte_count; | |
f654bac2 | 3501 | |
b6b38f70 | 3502 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3503 | if (tcon == NULL) |
3504 | return -ENODEV; | |
f654bac2 SF |
3505 | |
3506 | GetExtAttrRetry: | |
790fe579 SF |
3507 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3508 | (void **) &pSMBr); | |
3509 | if (rc) | |
3510 | return rc; | |
f654bac2 | 3511 | |
ad7a2926 | 3512 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3513 | pSMB->t2.TotalDataCount = 0; |
3514 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3515 | /* BB find exact max data count below from sess structure BB */ | |
3516 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3517 | pSMB->t2.MaxSetupCount = 0; | |
3518 | pSMB->t2.Reserved = 0; | |
3519 | pSMB->t2.Flags = 0; | |
3520 | pSMB->t2.Timeout = 0; | |
3521 | pSMB->t2.Reserved2 = 0; | |
3522 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3523 | Fid) - 4); | |
3524 | pSMB->t2.DataCount = 0; | |
3525 | pSMB->t2.DataOffset = 0; | |
3526 | pSMB->t2.SetupCount = 1; | |
3527 | pSMB->t2.Reserved3 = 0; | |
3528 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3529 | byte_count = params + 1 /* pad */ ; | |
3530 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3531 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3532 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3533 | pSMB->Pad = 0; | |
f654bac2 | 3534 | pSMB->Fid = netfid; |
be8e3b00 | 3535 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3536 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3537 | ||
3538 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3539 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3540 | if (rc) { | |
b6b38f70 | 3541 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3542 | } else { |
3543 | /* decode response */ | |
3544 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3545 | /* BB also check enough total bytes returned */ |
820a803f | 3546 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3547 | /* If rc should we check for EOPNOSUPP and |
3548 | disable the srvino flag? or in caller? */ | |
3549 | rc = -EIO; /* bad smb */ | |
3550 | else { | |
3551 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3552 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3553 | struct file_chattr_info *pfinfo; | |
3554 | /* BB Do we need a cast or hash here ? */ | |
3555 | if (count != 16) { | |
b6b38f70 | 3556 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3557 | rc = -EIO; |
3558 | goto GetExtAttrOut; | |
3559 | } | |
3560 | pfinfo = (struct file_chattr_info *) | |
3561 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3562 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3563 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3564 | } |
3565 | } | |
f654bac2 | 3566 | GetExtAttrOut: |
790fe579 SF |
3567 | cifs_buf_release(pSMB); |
3568 | if (rc == -EAGAIN) | |
3569 | goto GetExtAttrRetry; | |
3570 | return rc; | |
f654bac2 SF |
3571 | } |
3572 | ||
f654bac2 | 3573 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3574 | |
79df1bae JL |
3575 | #ifdef CONFIG_CIFS_ACL |
3576 | /* | |
3577 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3578 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3579 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3580 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3581 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3582 | * by caller | |
3583 | */ | |
3584 | static int | |
3585 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3586 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3587 | void **ret_buf) |
3588 | { | |
3589 | int rc; | |
3590 | __u32 temp_offset; | |
3591 | struct smb_com_ntransact_req *pSMB; | |
3592 | ||
3593 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3594 | (void **)&pSMB); | |
3595 | if (rc) | |
3596 | return rc; | |
3597 | *ret_buf = (void *)pSMB; | |
3598 | pSMB->Reserved = 0; | |
3599 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3600 | pSMB->TotalDataCount = 0; | |
c974befa | 3601 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3602 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3603 | pSMB->DataCount = pSMB->TotalDataCount; | |
3604 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3605 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3606 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3607 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3608 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3609 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3610 | return 0; | |
3611 | } | |
3612 | ||
3613 | static int | |
3614 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3615 | __u32 *pparmlen, __u32 *pdatalen) | |
3616 | { | |
3617 | char *end_of_smb; | |
3618 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3619 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3620 | u16 bcc; |
79df1bae JL |
3621 | |
3622 | *pdatalen = 0; | |
3623 | *pparmlen = 0; | |
3624 | ||
3625 | if (buf == NULL) | |
3626 | return -EINVAL; | |
3627 | ||
3628 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3629 | ||
820a803f JL |
3630 | bcc = get_bcc(&pSMBr->hdr); |
3631 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3632 | (char *)&pSMBr->ByteCount; |
3633 | ||
3634 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3635 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3636 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3637 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3638 | ||
3639 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3640 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3641 | ||
3642 | /* should we also check that parm and data areas do not overlap? */ | |
3643 | if (*ppparm > end_of_smb) { | |
3644 | cFYI(1, "parms start after end of smb"); | |
3645 | return -EINVAL; | |
3646 | } else if (parm_count + *ppparm > end_of_smb) { | |
3647 | cFYI(1, "parm end after end of smb"); | |
3648 | return -EINVAL; | |
3649 | } else if (*ppdata > end_of_smb) { | |
3650 | cFYI(1, "data starts after end of smb"); | |
3651 | return -EINVAL; | |
3652 | } else if (data_count + *ppdata > end_of_smb) { | |
3653 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3654 | *ppdata, data_count, (data_count + *ppdata), | |
3655 | end_of_smb, pSMBr); | |
3656 | return -EINVAL; | |
820a803f | 3657 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3658 | cFYI(1, "parm count and data count larger than SMB"); |
3659 | return -EINVAL; | |
3660 | } | |
3661 | *pdatalen = data_count; | |
3662 | *pparmlen = parm_count; | |
3663 | return 0; | |
3664 | } | |
3665 | ||
0a4b92c0 SF |
3666 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3667 | int | |
6d5786a3 | 3668 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3669 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3670 | { |
3671 | int rc = 0; | |
3672 | int buf_type = 0; | |
ad7a2926 | 3673 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3674 | struct kvec iov[1]; |
3675 | ||
b6b38f70 | 3676 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3677 | |
630f3f0c SF |
3678 | *pbuflen = 0; |
3679 | *acl_inf = NULL; | |
3680 | ||
b9c7a2bb | 3681 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3682 | 8 /* parm len */, tcon, (void **) &pSMB); |
3683 | if (rc) | |
3684 | return rc; | |
3685 | ||
3686 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3687 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3688 | pSMB->MaxSetupCount = 0; | |
3689 | pSMB->Fid = fid; /* file handle always le */ | |
3690 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3691 | CIFS_ACL_DACL); | |
3692 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3693 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3694 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3695 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3696 | |
a761ac57 | 3697 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3698 | 0); |
44c58186 | 3699 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3700 | if (rc) { |
b6b38f70 | 3701 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3702 | } else { /* decode response */ |
ad7a2926 | 3703 | __le32 *parm; |
630f3f0c SF |
3704 | __u32 parm_len; |
3705 | __u32 acl_len; | |
50c2f753 | 3706 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3707 | char *pdata; |
0a4b92c0 SF |
3708 | |
3709 | /* validate_nttransact */ | |
50c2f753 | 3710 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3711 | &pdata, &parm_len, pbuflen); |
790fe579 | 3712 | if (rc) |
0a4b92c0 SF |
3713 | goto qsec_out; |
3714 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3715 | ||
b6b38f70 | 3716 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3717 | |
3718 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3719 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3720 | *pbuflen = 0; |
0a4b92c0 SF |
3721 | goto qsec_out; |
3722 | } | |
3723 | ||
3724 | /* BB check that data area is minimum length and as big as acl_len */ | |
3725 | ||
af6f4612 | 3726 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3727 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3728 | cERROR(1, "acl length %d does not match %d", |
3729 | acl_len, *pbuflen); | |
630f3f0c SF |
3730 | if (*pbuflen > acl_len) |
3731 | *pbuflen = acl_len; | |
3732 | } | |
0a4b92c0 | 3733 | |
630f3f0c SF |
3734 | /* check if buffer is big enough for the acl |
3735 | header followed by the smallest SID */ | |
3736 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3737 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3738 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3739 | rc = -EINVAL; |
3740 | *pbuflen = 0; | |
3741 | } else { | |
3742 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3743 | if (*acl_inf == NULL) { | |
3744 | *pbuflen = 0; | |
3745 | rc = -ENOMEM; | |
3746 | } | |
3747 | memcpy(*acl_inf, pdata, *pbuflen); | |
3748 | } | |
0a4b92c0 SF |
3749 | } |
3750 | qsec_out: | |
790fe579 | 3751 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3752 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3753 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3754 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3755 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3756 | return rc; |
3757 | } | |
97837582 SF |
3758 | |
3759 | int | |
6d5786a3 | 3760 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3761 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3762 | { |
3763 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3764 | int rc = 0; | |
3765 | int bytes_returned = 0; | |
3766 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3767 | void *pSMBr; |
97837582 SF |
3768 | |
3769 | setCifsAclRetry: | |
b2a3ad9c | 3770 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3771 | if (rc) |
b2a3ad9c | 3772 | return rc; |
97837582 SF |
3773 | |
3774 | pSMB->MaxSetupCount = 0; | |
3775 | pSMB->Reserved = 0; | |
3776 | ||
3777 | param_count = 8; | |
3778 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3779 | data_count = acllen; | |
3780 | data_offset = param_offset + param_count; | |
3781 | byte_count = 3 /* pad */ + param_count; | |
3782 | ||
3783 | pSMB->DataCount = cpu_to_le32(data_count); | |
3784 | pSMB->TotalDataCount = pSMB->DataCount; | |
3785 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3786 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3787 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3788 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3789 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3790 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3791 | pSMB->SetupCount = 0; | |
3792 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3793 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3794 | ||
3795 | pSMB->Fid = fid; /* file handle always le */ | |
3796 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3797 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3798 | |
3799 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3800 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3801 | data_offset, pntsd, acllen); | |
be8e3b00 | 3802 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3803 | } else |
be8e3b00 | 3804 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3805 | |
3806 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3807 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3808 | ||
b6b38f70 | 3809 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3810 | if (rc) |
b6b38f70 | 3811 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3812 | cifs_buf_release(pSMB); |
3813 | ||
3814 | if (rc == -EAGAIN) | |
3815 | goto setCifsAclRetry; | |
3816 | ||
3817 | return (rc); | |
3818 | } | |
3819 | ||
79df1bae | 3820 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3821 | |
6b8edfe0 SF |
3822 | /* Legacy Query Path Information call for lookup to old servers such |
3823 | as Win9x/WinME */ | |
68889f26 PS |
3824 | int |
3825 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3826 | const char *search_name, FILE_ALL_INFO *data, | |
3827 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3828 | { |
ad7a2926 SF |
3829 | QUERY_INFORMATION_REQ *pSMB; |
3830 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3831 | int rc = 0; |
3832 | int bytes_returned; | |
3833 | int name_len; | |
3834 | ||
68889f26 | 3835 | cFYI(1, "In SMBQPath path %s", search_name); |
6b8edfe0 SF |
3836 | QInfRetry: |
3837 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3838 | (void **) &pSMBr); |
6b8edfe0 SF |
3839 | if (rc) |
3840 | return rc; | |
3841 | ||
3842 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3843 | name_len = | |
acbbb76a | 3844 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3845 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3846 | remap); |
6b8edfe0 SF |
3847 | name_len++; /* trailing null */ |
3848 | name_len *= 2; | |
50c2f753 | 3849 | } else { |
68889f26 | 3850 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3851 | name_len++; /* trailing null */ |
68889f26 | 3852 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3853 | } |
3854 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3855 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3856 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3857 | pSMB->ByteCount = cpu_to_le16(name_len); |
3858 | ||
3859 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3860 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3861 | if (rc) { |
b6b38f70 | 3862 | cFYI(1, "Send error in QueryInfo = %d", rc); |
68889f26 | 3863 | } else if (data) { |
1bd5bbcb SF |
3864 | struct timespec ts; |
3865 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3866 | |
3867 | /* decode response */ | |
1bd5bbcb | 3868 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3869 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3870 | ts.tv_nsec = 0; |
3871 | ts.tv_sec = time; | |
3872 | /* decode time fields */ | |
68889f26 PS |
3873 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3874 | data->LastWriteTime = data->ChangeTime; | |
3875 | data->LastAccessTime = 0; | |
3876 | data->AllocationSize = | |
70ca734a | 3877 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3878 | data->EndOfFile = data->AllocationSize; |
3879 | data->Attributes = | |
70ca734a | 3880 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3881 | } else |
3882 | rc = -EIO; /* bad buffer passed in */ | |
3883 | ||
3884 | cifs_buf_release(pSMB); | |
3885 | ||
3886 | if (rc == -EAGAIN) | |
3887 | goto QInfRetry; | |
3888 | ||
3889 | return rc; | |
3890 | } | |
3891 | ||
bcd5357f | 3892 | int |
6d5786a3 | 3893 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3894 | u16 netfid, FILE_ALL_INFO *pFindData) |
3895 | { | |
3896 | struct smb_t2_qfi_req *pSMB = NULL; | |
3897 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3898 | int rc = 0; | |
3899 | int bytes_returned; | |
3900 | __u16 params, byte_count; | |
3901 | ||
3902 | QFileInfoRetry: | |
3903 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3904 | (void **) &pSMBr); | |
3905 | if (rc) | |
3906 | return rc; | |
3907 | ||
3908 | params = 2 /* level */ + 2 /* fid */; | |
3909 | pSMB->t2.TotalDataCount = 0; | |
3910 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3911 | /* BB find exact max data count below from sess structure BB */ | |
3912 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3913 | pSMB->t2.MaxSetupCount = 0; | |
3914 | pSMB->t2.Reserved = 0; | |
3915 | pSMB->t2.Flags = 0; | |
3916 | pSMB->t2.Timeout = 0; | |
3917 | pSMB->t2.Reserved2 = 0; | |
3918 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3919 | Fid) - 4); | |
3920 | pSMB->t2.DataCount = 0; | |
3921 | pSMB->t2.DataOffset = 0; | |
3922 | pSMB->t2.SetupCount = 1; | |
3923 | pSMB->t2.Reserved3 = 0; | |
3924 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3925 | byte_count = params + 1 /* pad */ ; | |
3926 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3927 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3928 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3929 | pSMB->Pad = 0; | |
3930 | pSMB->Fid = netfid; | |
be8e3b00 | 3931 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3932 | |
bcd5357f JL |
3933 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3934 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3935 | if (rc) { | |
f19159dc | 3936 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3937 | } else { /* decode response */ |
3938 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3939 | |
bcd5357f JL |
3940 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3941 | rc = -EIO; | |
820a803f | 3942 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3943 | rc = -EIO; /* bad smb */ |
3944 | else if (pFindData) { | |
3945 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3946 | memcpy((char *) pFindData, | |
3947 | (char *) &pSMBr->hdr.Protocol + | |
3948 | data_offset, sizeof(FILE_ALL_INFO)); | |
3949 | } else | |
3950 | rc = -ENOMEM; | |
3951 | } | |
3952 | cifs_buf_release(pSMB); | |
3953 | if (rc == -EAGAIN) | |
3954 | goto QFileInfoRetry; | |
6b8edfe0 | 3955 | |
bcd5357f JL |
3956 | return rc; |
3957 | } | |
6b8edfe0 | 3958 | |
1da177e4 | 3959 | int |
6d5786a3 | 3960 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 3961 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 3962 | int legacy /* old style infolevel */, |
737b758c | 3963 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 3964 | { |
68889f26 | 3965 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
3966 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
3967 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3968 | int rc = 0; | |
3969 | int bytes_returned; | |
3970 | int name_len; | |
3971 | __u16 params, byte_count; | |
3972 | ||
68889f26 | 3973 | /* cFYI(1, "In QPathInfo path %s", search_name); */ |
1da177e4 LT |
3974 | QPathInfoRetry: |
3975 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3976 | (void **) &pSMBr); | |
3977 | if (rc) | |
3978 | return rc; | |
3979 | ||
3980 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3981 | name_len = | |
68889f26 | 3982 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 3983 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3984 | name_len++; /* trailing null */ |
3985 | name_len *= 2; | |
50c2f753 | 3986 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 3987 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 3988 | name_len++; /* trailing null */ |
68889f26 | 3989 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
3990 | } |
3991 | ||
50c2f753 | 3992 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3993 | pSMB->TotalDataCount = 0; |
3994 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3995 | /* BB find exact max SMB PDU from sess structure BB */ |
3996 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3997 | pSMB->MaxSetupCount = 0; |
3998 | pSMB->Reserved = 0; | |
3999 | pSMB->Flags = 0; | |
4000 | pSMB->Timeout = 0; | |
4001 | pSMB->Reserved2 = 0; | |
4002 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4003 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4004 | pSMB->DataCount = 0; |
4005 | pSMB->DataOffset = 0; | |
4006 | pSMB->SetupCount = 1; | |
4007 | pSMB->Reserved3 = 0; | |
4008 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4009 | byte_count = params + 1 /* pad */ ; | |
4010 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4011 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4012 | if (legacy) |
acf1a1b1 SF |
4013 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4014 | else | |
4015 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4016 | pSMB->Reserved4 = 0; |
be8e3b00 | 4017 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4018 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4019 | ||
4020 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4021 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4022 | if (rc) { | |
b6b38f70 | 4023 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4024 | } else { /* decode response */ |
4025 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4026 | ||
acf1a1b1 SF |
4027 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4028 | rc = -EIO; | |
820a803f | 4029 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4030 | rc = -EIO; /* bad smb */ |
820a803f | 4031 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4032 | rc = -EIO; /* 24 or 26 expected but we do not read |
4033 | last field */ | |
68889f26 | 4034 | else if (data) { |
acf1a1b1 | 4035 | int size; |
1da177e4 | 4036 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4037 | |
68889f26 PS |
4038 | /* |
4039 | * On legacy responses we do not read the last field, | |
4040 | * EAsize, fortunately since it varies by subdialect and | |
4041 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4042 | * bytes depending but we don't care here. | |
4043 | */ | |
ad7a2926 | 4044 | if (legacy) |
acf1a1b1 SF |
4045 | size = sizeof(FILE_INFO_STANDARD); |
4046 | else | |
4047 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4048 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4049 | data_offset, size); |
1da177e4 LT |
4050 | } else |
4051 | rc = -ENOMEM; | |
4052 | } | |
4053 | cifs_buf_release(pSMB); | |
4054 | if (rc == -EAGAIN) | |
4055 | goto QPathInfoRetry; | |
4056 | ||
4057 | return rc; | |
4058 | } | |
4059 | ||
c8634fd3 | 4060 | int |
6d5786a3 | 4061 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4062 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4063 | { | |
4064 | struct smb_t2_qfi_req *pSMB = NULL; | |
4065 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4066 | int rc = 0; | |
4067 | int bytes_returned; | |
4068 | __u16 params, byte_count; | |
4069 | ||
4070 | UnixQFileInfoRetry: | |
4071 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4072 | (void **) &pSMBr); | |
4073 | if (rc) | |
4074 | return rc; | |
4075 | ||
4076 | params = 2 /* level */ + 2 /* fid */; | |
4077 | pSMB->t2.TotalDataCount = 0; | |
4078 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4079 | /* BB find exact max data count below from sess structure BB */ | |
4080 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4081 | pSMB->t2.MaxSetupCount = 0; | |
4082 | pSMB->t2.Reserved = 0; | |
4083 | pSMB->t2.Flags = 0; | |
4084 | pSMB->t2.Timeout = 0; | |
4085 | pSMB->t2.Reserved2 = 0; | |
4086 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4087 | Fid) - 4); | |
4088 | pSMB->t2.DataCount = 0; | |
4089 | pSMB->t2.DataOffset = 0; | |
4090 | pSMB->t2.SetupCount = 1; | |
4091 | pSMB->t2.Reserved3 = 0; | |
4092 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4093 | byte_count = params + 1 /* pad */ ; | |
4094 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4095 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4096 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4097 | pSMB->Pad = 0; | |
4098 | pSMB->Fid = netfid; | |
be8e3b00 | 4099 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4100 | |
4101 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4102 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4103 | if (rc) { | |
f19159dc | 4104 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
4105 | } else { /* decode response */ |
4106 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4107 | ||
820a803f | 4108 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
ac3aa2f8 | 4109 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response. " |
c8634fd3 | 4110 | "Unix Extensions can be disabled on mount " |
f19159dc | 4111 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
4112 | rc = -EIO; /* bad smb */ |
4113 | } else { | |
4114 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4115 | memcpy((char *) pFindData, | |
4116 | (char *) &pSMBr->hdr.Protocol + | |
4117 | data_offset, | |
4118 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4119 | } | |
4120 | } | |
4121 | ||
4122 | cifs_buf_release(pSMB); | |
4123 | if (rc == -EAGAIN) | |
4124 | goto UnixQFileInfoRetry; | |
4125 | ||
4126 | return rc; | |
4127 | } | |
4128 | ||
1da177e4 | 4129 | int |
6d5786a3 | 4130 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4131 | const unsigned char *searchName, |
582d21e5 | 4132 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4133 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4134 | { |
4135 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4136 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4137 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4138 | int rc = 0; | |
4139 | int bytes_returned = 0; | |
4140 | int name_len; | |
4141 | __u16 params, byte_count; | |
4142 | ||
b6b38f70 | 4143 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
4144 | UnixQPathInfoRetry: |
4145 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4146 | (void **) &pSMBr); | |
4147 | if (rc) | |
4148 | return rc; | |
4149 | ||
4150 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4151 | name_len = | |
acbbb76a SF |
4152 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4153 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4154 | name_len++; /* trailing null */ |
4155 | name_len *= 2; | |
50c2f753 | 4156 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4157 | name_len = strnlen(searchName, PATH_MAX); |
4158 | name_len++; /* trailing null */ | |
4159 | strncpy(pSMB->FileName, searchName, name_len); | |
4160 | } | |
4161 | ||
50c2f753 | 4162 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4163 | pSMB->TotalDataCount = 0; |
4164 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4165 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4166 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4167 | pSMB->MaxSetupCount = 0; |
4168 | pSMB->Reserved = 0; | |
4169 | pSMB->Flags = 0; | |
4170 | pSMB->Timeout = 0; | |
4171 | pSMB->Reserved2 = 0; | |
4172 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4173 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4174 | pSMB->DataCount = 0; |
4175 | pSMB->DataOffset = 0; | |
4176 | pSMB->SetupCount = 1; | |
4177 | pSMB->Reserved3 = 0; | |
4178 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4179 | byte_count = params + 1 /* pad */ ; | |
4180 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4181 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4182 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4183 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4184 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4185 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4186 | ||
4187 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4188 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4189 | if (rc) { | |
b6b38f70 | 4190 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4191 | } else { /* decode response */ |
4192 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4193 | ||
820a803f | 4194 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
ac3aa2f8 | 4195 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response. " |
1e71f25d | 4196 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 4197 | "by specifying the nosfu mount option."); |
1da177e4 LT |
4198 | rc = -EIO; /* bad smb */ |
4199 | } else { | |
4200 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4201 | memcpy((char *) pFindData, | |
4202 | (char *) &pSMBr->hdr.Protocol + | |
4203 | data_offset, | |
630f3f0c | 4204 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4205 | } |
4206 | } | |
4207 | cifs_buf_release(pSMB); | |
4208 | if (rc == -EAGAIN) | |
4209 | goto UnixQPathInfoRetry; | |
4210 | ||
4211 | return rc; | |
4212 | } | |
4213 | ||
1da177e4 LT |
4214 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4215 | int | |
6d5786a3 | 4216 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 4217 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 4218 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 4219 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
4220 | { |
4221 | /* level 257 SMB_ */ | |
4222 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4223 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4224 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4225 | int rc = 0; |
4226 | int bytes_returned = 0; | |
c052e2b4 | 4227 | int name_len, remap; |
1da177e4 | 4228 | __u16 params, byte_count; |
c052e2b4 | 4229 | struct nls_table *nls_codepage; |
1da177e4 | 4230 | |
b6b38f70 | 4231 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
4232 | |
4233 | findFirstRetry: | |
4234 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4235 | (void **) &pSMBr); | |
4236 | if (rc) | |
4237 | return rc; | |
4238 | ||
c052e2b4 SP |
4239 | nls_codepage = cifs_sb->local_nls; |
4240 | remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; | |
4241 | ||
1da177e4 LT |
4242 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4243 | name_len = | |
acbbb76a SF |
4244 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4245 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4246 | /* We can not add the asterik earlier in case |
4247 | it got remapped to 0xF03A as if it were part of the | |
4248 | directory name instead of a wildcard */ | |
1da177e4 | 4249 | name_len *= 2; |
c052e2b4 SP |
4250 | if (msearch) { |
4251 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4252 | pSMB->FileName[name_len+1] = 0; | |
4253 | pSMB->FileName[name_len+2] = '*'; | |
4254 | pSMB->FileName[name_len+3] = 0; | |
4255 | name_len += 4; /* now the trailing null */ | |
4256 | /* null terminate just in case */ | |
4257 | pSMB->FileName[name_len] = 0; | |
4258 | pSMB->FileName[name_len+1] = 0; | |
4259 | name_len += 2; | |
4260 | } | |
1da177e4 LT |
4261 | } else { /* BB add check for overrun of SMB buf BB */ |
4262 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4263 | /* BB fix here and in unicode clause above ie |
790fe579 | 4264 | if (name_len > buffersize-header) |
1da177e4 LT |
4265 | free buffer exit; BB */ |
4266 | strncpy(pSMB->FileName, searchName, name_len); | |
c052e2b4 SP |
4267 | if (msearch) { |
4268 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
4269 | pSMB->FileName[name_len+1] = '*'; | |
4270 | pSMB->FileName[name_len+2] = 0; | |
4271 | name_len += 3; | |
4272 | } | |
1da177e4 LT |
4273 | } |
4274 | ||
4275 | params = 12 + name_len /* includes null */ ; | |
4276 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4277 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4278 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4279 | pSMB->MaxSetupCount = 0; |
4280 | pSMB->Reserved = 0; | |
4281 | pSMB->Flags = 0; | |
4282 | pSMB->Timeout = 0; | |
4283 | pSMB->Reserved2 = 0; | |
4284 | byte_count = params + 1 /* pad */ ; | |
4285 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4286 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4287 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4288 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4289 | - 4); | |
1da177e4 LT |
4290 | pSMB->DataCount = 0; |
4291 | pSMB->DataOffset = 0; | |
4292 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4293 | pSMB->Reserved3 = 0; | |
4294 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4295 | pSMB->SearchAttributes = | |
4296 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4297 | ATTR_DIRECTORY); | |
50c2f753 | 4298 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4299 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4300 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4301 | ||
4302 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4303 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4304 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4305 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4306 | ||
4307 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4308 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4309 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4310 | |
88274815 SF |
4311 | if (rc) {/* BB add logic to retry regular search if Unix search |
4312 | rejected unexpectedly by server */ | |
1da177e4 | 4313 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4314 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4315 | |
88274815 | 4316 | cifs_buf_release(pSMB); |
1da177e4 LT |
4317 | |
4318 | /* BB eventually could optimize out free and realloc of buf */ | |
4319 | /* for this case */ | |
4320 | if (rc == -EAGAIN) | |
4321 | goto findFirstRetry; | |
4322 | } else { /* decode response */ | |
4323 | /* BB remember to free buffer if error BB */ | |
4324 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4325 | if (rc == 0) { |
b77d753c SF |
4326 | unsigned int lnoff; |
4327 | ||
1da177e4 | 4328 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4329 | psrch_inf->unicode = true; |
1da177e4 | 4330 | else |
4b18f2a9 | 4331 | psrch_inf->unicode = false; |
1da177e4 LT |
4332 | |
4333 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4334 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4335 | psrch_inf->srch_entries_start = |
4336 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4337 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4338 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4339 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4340 | ||
790fe579 | 4341 | if (parms->EndofSearch) |
4b18f2a9 | 4342 | psrch_inf->endOfSearch = true; |
1da177e4 | 4343 | else |
4b18f2a9 | 4344 | psrch_inf->endOfSearch = false; |
1da177e4 | 4345 | |
50c2f753 SF |
4346 | psrch_inf->entries_in_buffer = |
4347 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4348 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4349 | psrch_inf->entries_in_buffer; |
b77d753c | 4350 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4351 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4352 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4353 | psrch_inf->last_entry = NULL; |
4354 | return rc; | |
4355 | } | |
4356 | ||
0752f152 | 4357 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4358 | lnoff; |
4359 | ||
c052e2b4 SP |
4360 | if (pnetfid) |
4361 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4362 | } else { |
4363 | cifs_buf_release(pSMB); | |
4364 | } | |
4365 | } | |
4366 | ||
4367 | return rc; | |
4368 | } | |
4369 | ||
6d5786a3 PS |
4370 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4371 | __u16 searchHandle, __u16 search_flags, | |
4372 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4373 | { |
4374 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4375 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4376 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4377 | char *response_data; |
4378 | int rc = 0; | |
9438fabb JL |
4379 | int bytes_returned; |
4380 | unsigned int name_len; | |
1da177e4 LT |
4381 | __u16 params, byte_count; |
4382 | ||
b6b38f70 | 4383 | cFYI(1, "In FindNext"); |
1da177e4 | 4384 | |
4b18f2a9 | 4385 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4386 | return -ENOENT; |
4387 | ||
4388 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4389 | (void **) &pSMBr); | |
4390 | if (rc) | |
4391 | return rc; | |
4392 | ||
50c2f753 | 4393 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4394 | byte_count = 0; |
4395 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4396 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4397 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4398 | pSMB->MaxSetupCount = 0; |
4399 | pSMB->Reserved = 0; | |
4400 | pSMB->Flags = 0; | |
4401 | pSMB->Timeout = 0; | |
4402 | pSMB->Reserved2 = 0; | |
4403 | pSMB->ParameterOffset = cpu_to_le16( | |
4404 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4405 | pSMB->DataCount = 0; | |
4406 | pSMB->DataOffset = 0; | |
4407 | pSMB->SetupCount = 1; | |
4408 | pSMB->Reserved3 = 0; | |
4409 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4410 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4411 | pSMB->SearchCount = | |
630f3f0c | 4412 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4413 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4414 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4415 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4416 | |
4417 | name_len = psrch_inf->resume_name_len; | |
4418 | params += name_len; | |
790fe579 | 4419 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4420 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4421 | byte_count += name_len; | |
ef6724e3 SF |
4422 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4423 | pSMB->ResumeFileName[name_len] = 0; | |
4424 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4425 | } else { |
4426 | rc = -EINVAL; | |
4427 | goto FNext2_err_exit; | |
4428 | } | |
4429 | byte_count = params + 1 /* pad */ ; | |
4430 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4431 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4432 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4433 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4434 | |
1da177e4 LT |
4435 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4436 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4437 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4438 | if (rc) { |
4439 | if (rc == -EBADF) { | |
4b18f2a9 | 4440 | psrch_inf->endOfSearch = true; |
6353450a | 4441 | cifs_buf_release(pSMB); |
50c2f753 | 4442 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4443 | } else |
b6b38f70 | 4444 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4445 | } else { /* decode response */ |
4446 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4447 | |
790fe579 | 4448 | if (rc == 0) { |
b77d753c SF |
4449 | unsigned int lnoff; |
4450 | ||
1da177e4 LT |
4451 | /* BB fixme add lock for file (srch_info) struct here */ |
4452 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4453 | psrch_inf->unicode = true; |
1da177e4 | 4454 | else |
4b18f2a9 | 4455 | psrch_inf->unicode = false; |
1da177e4 LT |
4456 | response_data = (char *) &pSMBr->hdr.Protocol + |
4457 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4458 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4459 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4460 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4461 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4462 | cifs_small_buf_release( |
4463 | psrch_inf->ntwrk_buf_start); | |
4464 | else | |
4465 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4466 | psrch_inf->srch_entries_start = response_data; |
4467 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4468 | psrch_inf->smallBuf = 0; |
790fe579 | 4469 | if (parms->EndofSearch) |
4b18f2a9 | 4470 | psrch_inf->endOfSearch = true; |
1da177e4 | 4471 | else |
4b18f2a9 | 4472 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4473 | psrch_inf->entries_in_buffer = |
4474 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4475 | psrch_inf->index_of_last_entry += |
4476 | psrch_inf->entries_in_buffer; | |
b77d753c | 4477 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4478 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4479 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4480 | psrch_inf->last_entry = NULL; |
4481 | return rc; | |
4482 | } else | |
4483 | psrch_inf->last_entry = | |
4484 | psrch_inf->srch_entries_start + lnoff; | |
4485 | ||
b6b38f70 JP |
4486 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4487 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4488 | |
4489 | /* BB fixme add unlock here */ | |
4490 | } | |
4491 | ||
4492 | } | |
4493 | ||
4494 | /* BB On error, should we leave previous search buf (and count and | |
4495 | last entry fields) intact or free the previous one? */ | |
4496 | ||
4497 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4498 | since file handle passed in no longer valid */ | |
4499 | FNext2_err_exit: | |
4500 | if (rc != 0) | |
4501 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4502 | return rc; |
4503 | } | |
4504 | ||
4505 | int | |
6d5786a3 | 4506 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4507 | const __u16 searchHandle) |
1da177e4 LT |
4508 | { |
4509 | int rc = 0; | |
4510 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4511 | |
b6b38f70 | 4512 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4513 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4514 | ||
4515 | /* no sense returning error if session restarted | |
4516 | as file handle has been closed */ | |
790fe579 | 4517 | if (rc == -EAGAIN) |
1da177e4 LT |
4518 | return 0; |
4519 | if (rc) | |
4520 | return rc; | |
4521 | ||
1da177e4 LT |
4522 | pSMB->FileID = searchHandle; |
4523 | pSMB->ByteCount = 0; | |
792af7b0 | 4524 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4525 | if (rc) |
b6b38f70 | 4526 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4527 | |
44c58186 | 4528 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4529 | |
4530 | /* Since session is dead, search handle closed on server already */ | |
4531 | if (rc == -EAGAIN) | |
4532 | rc = 0; | |
4533 | ||
4534 | return rc; | |
4535 | } | |
4536 | ||
1da177e4 | 4537 | int |
6d5786a3 | 4538 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4539 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4540 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4541 | { |
4542 | int rc = 0; | |
4543 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4544 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4545 | int name_len, bytes_returned; | |
4546 | __u16 params, byte_count; | |
4547 | ||
1208ef1f | 4548 | cFYI(1, "In GetSrvInodeNum for %s", search_name); |
790fe579 | 4549 | if (tcon == NULL) |
50c2f753 | 4550 | return -ENODEV; |
1da177e4 LT |
4551 | |
4552 | GetInodeNumberRetry: | |
4553 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4554 | (void **) &pSMBr); |
1da177e4 LT |
4555 | if (rc) |
4556 | return rc; | |
4557 | ||
1da177e4 LT |
4558 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4559 | name_len = | |
acbbb76a | 4560 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4561 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4562 | remap); |
1da177e4 LT |
4563 | name_len++; /* trailing null */ |
4564 | name_len *= 2; | |
50c2f753 | 4565 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4566 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4567 | name_len++; /* trailing null */ |
1208ef1f | 4568 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4569 | } |
4570 | ||
4571 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4572 | pSMB->TotalDataCount = 0; | |
4573 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4574 | /* BB find exact max data count below from sess structure BB */ | |
4575 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4576 | pSMB->MaxSetupCount = 0; | |
4577 | pSMB->Reserved = 0; | |
4578 | pSMB->Flags = 0; | |
4579 | pSMB->Timeout = 0; | |
4580 | pSMB->Reserved2 = 0; | |
4581 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4582 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4583 | pSMB->DataCount = 0; |
4584 | pSMB->DataOffset = 0; | |
4585 | pSMB->SetupCount = 1; | |
4586 | pSMB->Reserved3 = 0; | |
4587 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4588 | byte_count = params + 1 /* pad */ ; | |
4589 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4590 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4591 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4592 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4593 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4594 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4595 | ||
4596 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4597 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4598 | if (rc) { | |
b6b38f70 | 4599 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4600 | } else { |
4601 | /* decode response */ | |
4602 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4603 | /* BB also check enough total bytes returned */ |
820a803f | 4604 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4605 | /* If rc should we check for EOPNOSUPP and |
4606 | disable the srvino flag? or in caller? */ | |
4607 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4608 | else { |
1da177e4 LT |
4609 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4610 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4611 | struct file_internal_info *pfinfo; |
1da177e4 | 4612 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4613 | if (count < 8) { |
b6b38f70 | 4614 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4615 | rc = -EIO; |
4616 | goto GetInodeNumOut; | |
4617 | } | |
4618 | pfinfo = (struct file_internal_info *) | |
4619 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4620 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4621 | } |
4622 | } | |
4623 | GetInodeNumOut: | |
4624 | cifs_buf_release(pSMB); | |
4625 | if (rc == -EAGAIN) | |
4626 | goto GetInodeNumberRetry; | |
4627 | return rc; | |
4628 | } | |
1da177e4 | 4629 | |
fec4585f IM |
4630 | /* parses DFS refferal V3 structure |
4631 | * caller is responsible for freeing target_nodes | |
4632 | * returns: | |
4633 | * on success - 0 | |
4634 | * on failure - errno | |
4635 | */ | |
4636 | static int | |
a1fe78f1 | 4637 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4638 | unsigned int *num_of_nodes, |
4639 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4640 | const struct nls_table *nls_codepage, int remap, |
4641 | const char *searchName) | |
fec4585f IM |
4642 | { |
4643 | int i, rc = 0; | |
4644 | char *data_end; | |
4645 | bool is_unicode; | |
4646 | struct dfs_referral_level_3 *ref; | |
4647 | ||
5ca33c6a HH |
4648 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4649 | is_unicode = true; | |
4650 | else | |
4651 | is_unicode = false; | |
fec4585f IM |
4652 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4653 | ||
4654 | if (*num_of_nodes < 1) { | |
b6b38f70 | 4655 | cERROR(1, "num_referrals: must be at least > 0," |
ac3aa2f8 | 4656 | "but we get num_referrals = %d", *num_of_nodes); |
fec4585f | 4657 | rc = -EINVAL; |
a1fe78f1 | 4658 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4659 | } |
4660 | ||
4661 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4662 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4663 | cERROR(1, "Referrals of V%d version are not supported," |
4664 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4665 | rc = -EINVAL; |
a1fe78f1 | 4666 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4667 | } |
4668 | ||
4669 | /* get the upper boundary of the resp buffer */ | |
4670 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4671 | le16_to_cpu(pSMBr->t2.DataCount); | |
4672 | ||
ac3aa2f8 | 4673 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...", |
fec4585f | 4674 | *num_of_nodes, |
b6b38f70 | 4675 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4676 | |
4677 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4678 | *num_of_nodes, GFP_KERNEL); | |
4679 | if (*target_nodes == NULL) { | |
ac3aa2f8 | 4680 | cERROR(1, "Failed to allocate buffer for target_nodes"); |
fec4585f | 4681 | rc = -ENOMEM; |
a1fe78f1 | 4682 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4683 | } |
4684 | ||
3ad2f3fb | 4685 | /* collect necessary data from referrals */ |
fec4585f IM |
4686 | for (i = 0; i < *num_of_nodes; i++) { |
4687 | char *temp; | |
4688 | int max_len; | |
4689 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4690 | ||
0e0d2cf3 | 4691 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4692 | if (is_unicode) { |
331c3135 JL |
4693 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4694 | GFP_KERNEL); | |
2920ee2b SF |
4695 | if (tmp == NULL) { |
4696 | rc = -ENOMEM; | |
4697 | goto parse_DFS_referrals_exit; | |
4698 | } | |
acbbb76a SF |
4699 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4700 | PATH_MAX, nls_codepage, remap); | |
4701 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4702 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4703 | nls_codepage); |
4704 | kfree(tmp); | |
4705 | } else | |
4706 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4707 | ||
fec4585f IM |
4708 | node->server_type = le16_to_cpu(ref->ServerType); |
4709 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4710 | ||
4711 | /* copy DfsPath */ | |
4712 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4713 | max_len = data_end - temp; | |
acbbb76a SF |
4714 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4715 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4716 | if (!node->path_name) { |
4717 | rc = -ENOMEM; | |
a1fe78f1 | 4718 | goto parse_DFS_referrals_exit; |
066ce689 | 4719 | } |
fec4585f IM |
4720 | |
4721 | /* copy link target UNC */ | |
4722 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4723 | max_len = data_end - temp; | |
acbbb76a SF |
4724 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4725 | is_unicode, nls_codepage); | |
d8f2799b | 4726 | if (!node->node_name) { |
d8e2f53a | 4727 | rc = -ENOMEM; |
d8f2799b SM |
4728 | goto parse_DFS_referrals_exit; |
4729 | } | |
4730 | ||
4731 | ref++; | |
fec4585f IM |
4732 | } |
4733 | ||
a1fe78f1 | 4734 | parse_DFS_referrals_exit: |
fec4585f IM |
4735 | if (rc) { |
4736 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4737 | *target_nodes = NULL; | |
4738 | *num_of_nodes = 0; | |
4739 | } | |
4740 | return rc; | |
4741 | } | |
4742 | ||
1da177e4 | 4743 | int |
6d5786a3 | 4744 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4745 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4746 | unsigned int *num_of_nodes, |
737b758c | 4747 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4748 | { |
4749 | /* TRANS2_GET_DFS_REFERRAL */ | |
4750 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4751 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4752 | int rc = 0; |
4753 | int bytes_returned; | |
4754 | int name_len; | |
1da177e4 | 4755 | __u16 params, byte_count; |
c2cf07d5 SF |
4756 | *num_of_nodes = 0; |
4757 | *target_nodes = NULL; | |
1da177e4 | 4758 | |
b669f33c | 4759 | cFYI(1, "In GetDFSRefer the path %s", search_name); |
1da177e4 LT |
4760 | if (ses == NULL) |
4761 | return -ENODEV; | |
4762 | getDFSRetry: | |
4763 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4764 | (void **) &pSMBr); | |
4765 | if (rc) | |
4766 | return rc; | |
50c2f753 SF |
4767 | |
4768 | /* server pointer checked in called function, | |
1982c344 | 4769 | but should never be null here anyway */ |
88257360 | 4770 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4771 | pSMB->hdr.Tid = ses->ipc_tid; |
4772 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4773 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4774 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4775 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4776 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4777 | |
4778 | if (ses->capabilities & CAP_UNICODE) { | |
4779 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4780 | name_len = | |
acbbb76a | 4781 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4782 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4783 | remap); |
1da177e4 LT |
4784 | name_len++; /* trailing null */ |
4785 | name_len *= 2; | |
50c2f753 | 4786 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4787 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4788 | name_len++; /* trailing null */ |
b669f33c | 4789 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4790 | } |
4791 | ||
790fe579 | 4792 | if (ses->server) { |
96daf2b0 | 4793 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4794 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4795 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4796 | } | |
4797 | ||
50c2f753 | 4798 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4799 | |
1da177e4 LT |
4800 | params = 2 /* level */ + name_len /*includes null */ ; |
4801 | pSMB->TotalDataCount = 0; | |
4802 | pSMB->DataCount = 0; | |
4803 | pSMB->DataOffset = 0; | |
4804 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4805 | /* BB find exact max SMB PDU from sess structure BB */ |
4806 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4807 | pSMB->MaxSetupCount = 0; |
4808 | pSMB->Reserved = 0; | |
4809 | pSMB->Flags = 0; | |
4810 | pSMB->Timeout = 0; | |
4811 | pSMB->Reserved2 = 0; | |
4812 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4813 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4814 | pSMB->SetupCount = 1; |
4815 | pSMB->Reserved3 = 0; | |
4816 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4817 | byte_count = params + 3 /* pad */ ; | |
4818 | pSMB->ParameterCount = cpu_to_le16(params); | |
4819 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4820 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4821 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4822 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4823 | ||
4824 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4825 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4826 | if (rc) { | |
b6b38f70 | 4827 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4828 | goto GetDFSRefExit; |
4829 | } | |
4830 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4831 | |
c2cf07d5 | 4832 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4833 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4834 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4835 | goto GetDFSRefExit; |
4836 | } | |
c2cf07d5 | 4837 | |
b6b38f70 | 4838 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4839 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4840 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4841 | |
fec4585f | 4842 | /* parse returned result into more usable form */ |
a1fe78f1 | 4843 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4844 | target_nodes, nls_codepage, remap, |
b669f33c | 4845 | search_name); |
c2cf07d5 | 4846 | |
1da177e4 | 4847 | GetDFSRefExit: |
0d817bc0 | 4848 | cifs_buf_release(pSMB); |
1da177e4 LT |
4849 | |
4850 | if (rc == -EAGAIN) | |
4851 | goto getDFSRetry; | |
4852 | ||
4853 | return rc; | |
4854 | } | |
4855 | ||
20962438 SF |
4856 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4857 | int | |
6d5786a3 PS |
4858 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4859 | struct kstatfs *FSData) | |
20962438 SF |
4860 | { |
4861 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4862 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4863 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4864 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4865 | int rc = 0; | |
4866 | int bytes_returned = 0; | |
4867 | __u16 params, byte_count; | |
4868 | ||
b6b38f70 | 4869 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4870 | oldQFSInfoRetry: |
4871 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4872 | (void **) &pSMBr); | |
4873 | if (rc) | |
4874 | return rc; | |
20962438 SF |
4875 | |
4876 | params = 2; /* level */ | |
4877 | pSMB->TotalDataCount = 0; | |
4878 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4879 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4880 | pSMB->MaxSetupCount = 0; | |
4881 | pSMB->Reserved = 0; | |
4882 | pSMB->Flags = 0; | |
4883 | pSMB->Timeout = 0; | |
4884 | pSMB->Reserved2 = 0; | |
4885 | byte_count = params + 1 /* pad */ ; | |
4886 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4887 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4888 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4889 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4890 | pSMB->DataCount = 0; | |
4891 | pSMB->DataOffset = 0; | |
4892 | pSMB->SetupCount = 1; | |
4893 | pSMB->Reserved3 = 0; | |
4894 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4895 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4896 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4897 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4898 | ||
4899 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4900 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4901 | if (rc) { | |
b6b38f70 | 4902 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4903 | } else { /* decode response */ |
4904 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4905 | ||
820a803f | 4906 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4907 | rc = -EIO; /* bad smb */ |
4908 | else { | |
4909 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4910 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4911 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4912 | |
50c2f753 | 4913 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4914 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4915 | FSData->f_bsize = | |
4916 | le16_to_cpu(response_data->BytesPerSector) * | |
4917 | le32_to_cpu(response_data-> | |
4918 | SectorsPerAllocationUnit); | |
4919 | FSData->f_blocks = | |
50c2f753 | 4920 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4921 | FSData->f_bfree = FSData->f_bavail = |
4922 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4923 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4924 | (unsigned long long)FSData->f_blocks, | |
4925 | (unsigned long long)FSData->f_bfree, | |
4926 | FSData->f_bsize); | |
20962438 SF |
4927 | } |
4928 | } | |
4929 | cifs_buf_release(pSMB); | |
4930 | ||
4931 | if (rc == -EAGAIN) | |
4932 | goto oldQFSInfoRetry; | |
4933 | ||
4934 | return rc; | |
4935 | } | |
4936 | ||
1da177e4 | 4937 | int |
6d5786a3 PS |
4938 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4939 | struct kstatfs *FSData) | |
1da177e4 LT |
4940 | { |
4941 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4942 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4943 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4944 | FILE_SYSTEM_INFO *response_data; | |
4945 | int rc = 0; | |
4946 | int bytes_returned = 0; | |
4947 | __u16 params, byte_count; | |
4948 | ||
b6b38f70 | 4949 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4950 | QFSInfoRetry: |
4951 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4952 | (void **) &pSMBr); | |
4953 | if (rc) | |
4954 | return rc; | |
4955 | ||
4956 | params = 2; /* level */ | |
4957 | pSMB->TotalDataCount = 0; | |
4958 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4959 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4960 | pSMB->MaxSetupCount = 0; |
4961 | pSMB->Reserved = 0; | |
4962 | pSMB->Flags = 0; | |
4963 | pSMB->Timeout = 0; | |
4964 | pSMB->Reserved2 = 0; | |
4965 | byte_count = params + 1 /* pad */ ; | |
4966 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4967 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4968 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4969 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4970 | pSMB->DataCount = 0; |
4971 | pSMB->DataOffset = 0; | |
4972 | pSMB->SetupCount = 1; | |
4973 | pSMB->Reserved3 = 0; | |
4974 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4975 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4976 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4977 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4978 | ||
4979 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4980 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4981 | if (rc) { | |
b6b38f70 | 4982 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4983 | } else { /* decode response */ |
50c2f753 | 4984 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4985 | |
820a803f | 4986 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4987 | rc = -EIO; /* bad smb */ |
4988 | else { | |
4989 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4990 | |
4991 | response_data = | |
4992 | (FILE_SYSTEM_INFO | |
4993 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4994 | data_offset); | |
4995 | FSData->f_bsize = | |
4996 | le32_to_cpu(response_data->BytesPerSector) * | |
4997 | le32_to_cpu(response_data-> | |
4998 | SectorsPerAllocationUnit); | |
4999 | FSData->f_blocks = | |
5000 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5001 | FSData->f_bfree = FSData->f_bavail = | |
5002 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
5003 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
5004 | (unsigned long long)FSData->f_blocks, | |
5005 | (unsigned long long)FSData->f_bfree, | |
5006 | FSData->f_bsize); | |
1da177e4 LT |
5007 | } |
5008 | } | |
5009 | cifs_buf_release(pSMB); | |
5010 | ||
5011 | if (rc == -EAGAIN) | |
5012 | goto QFSInfoRetry; | |
5013 | ||
5014 | return rc; | |
5015 | } | |
5016 | ||
5017 | int | |
6d5786a3 | 5018 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5019 | { |
5020 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5021 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5022 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5023 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5024 | int rc = 0; | |
5025 | int bytes_returned = 0; | |
5026 | __u16 params, byte_count; | |
5027 | ||
b6b38f70 | 5028 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
5029 | QFSAttributeRetry: |
5030 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5031 | (void **) &pSMBr); | |
5032 | if (rc) | |
5033 | return rc; | |
5034 | ||
5035 | params = 2; /* level */ | |
5036 | pSMB->TotalDataCount = 0; | |
5037 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5038 | /* BB find exact max SMB PDU from sess structure BB */ |
5039 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5040 | pSMB->MaxSetupCount = 0; |
5041 | pSMB->Reserved = 0; | |
5042 | pSMB->Flags = 0; | |
5043 | pSMB->Timeout = 0; | |
5044 | pSMB->Reserved2 = 0; | |
5045 | byte_count = params + 1 /* pad */ ; | |
5046 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5047 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5048 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5049 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5050 | pSMB->DataCount = 0; |
5051 | pSMB->DataOffset = 0; | |
5052 | pSMB->SetupCount = 1; | |
5053 | pSMB->Reserved3 = 0; | |
5054 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5055 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5056 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5057 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5058 | ||
5059 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5060 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5061 | if (rc) { | |
b6b38f70 | 5062 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
5063 | } else { /* decode response */ |
5064 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5065 | ||
820a803f | 5066 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5067 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5068 | rc = -EIO; /* bad smb */ |
5069 | } else { | |
5070 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5071 | response_data = | |
5072 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5073 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5074 | data_offset); | |
5075 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5076 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5077 | } |
5078 | } | |
5079 | cifs_buf_release(pSMB); | |
5080 | ||
5081 | if (rc == -EAGAIN) | |
5082 | goto QFSAttributeRetry; | |
5083 | ||
5084 | return rc; | |
5085 | } | |
5086 | ||
5087 | int | |
6d5786a3 | 5088 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5089 | { |
5090 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5091 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5092 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5093 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5094 | int rc = 0; | |
5095 | int bytes_returned = 0; | |
5096 | __u16 params, byte_count; | |
5097 | ||
b6b38f70 | 5098 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
5099 | QFSDeviceRetry: |
5100 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5101 | (void **) &pSMBr); | |
5102 | if (rc) | |
5103 | return rc; | |
5104 | ||
5105 | params = 2; /* level */ | |
5106 | pSMB->TotalDataCount = 0; | |
5107 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5108 | /* BB find exact max SMB PDU from sess structure BB */ |
5109 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5110 | pSMB->MaxSetupCount = 0; |
5111 | pSMB->Reserved = 0; | |
5112 | pSMB->Flags = 0; | |
5113 | pSMB->Timeout = 0; | |
5114 | pSMB->Reserved2 = 0; | |
5115 | byte_count = params + 1 /* pad */ ; | |
5116 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5117 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5118 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5119 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5120 | |
5121 | pSMB->DataCount = 0; | |
5122 | pSMB->DataOffset = 0; | |
5123 | pSMB->SetupCount = 1; | |
5124 | pSMB->Reserved3 = 0; | |
5125 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5126 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5127 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5128 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5129 | ||
5130 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5131 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5132 | if (rc) { | |
b6b38f70 | 5133 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
5134 | } else { /* decode response */ |
5135 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5136 | ||
820a803f JL |
5137 | if (rc || get_bcc(&pSMBr->hdr) < |
5138 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5139 | rc = -EIO; /* bad smb */ |
5140 | else { | |
5141 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5142 | response_data = | |
737b758c SF |
5143 | (FILE_SYSTEM_DEVICE_INFO *) |
5144 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5145 | data_offset); |
5146 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5147 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5148 | } |
5149 | } | |
5150 | cifs_buf_release(pSMB); | |
5151 | ||
5152 | if (rc == -EAGAIN) | |
5153 | goto QFSDeviceRetry; | |
5154 | ||
5155 | return rc; | |
5156 | } | |
5157 | ||
5158 | int | |
6d5786a3 | 5159 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5160 | { |
5161 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5162 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5163 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5164 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5165 | int rc = 0; | |
5166 | int bytes_returned = 0; | |
5167 | __u16 params, byte_count; | |
5168 | ||
b6b38f70 | 5169 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 5170 | QFSUnixRetry: |
f569599a JL |
5171 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5172 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5173 | if (rc) |
5174 | return rc; | |
5175 | ||
5176 | params = 2; /* level */ | |
5177 | pSMB->TotalDataCount = 0; | |
5178 | pSMB->DataCount = 0; | |
5179 | pSMB->DataOffset = 0; | |
5180 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5181 | /* BB find exact max SMB PDU from sess structure BB */ |
5182 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5183 | pSMB->MaxSetupCount = 0; |
5184 | pSMB->Reserved = 0; | |
5185 | pSMB->Flags = 0; | |
5186 | pSMB->Timeout = 0; | |
5187 | pSMB->Reserved2 = 0; | |
5188 | byte_count = params + 1 /* pad */ ; | |
5189 | pSMB->ParameterCount = cpu_to_le16(params); | |
5190 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5191 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5192 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5193 | pSMB->SetupCount = 1; |
5194 | pSMB->Reserved3 = 0; | |
5195 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5196 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5197 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5198 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5199 | ||
5200 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5201 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5202 | if (rc) { | |
b6b38f70 | 5203 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5204 | } else { /* decode response */ |
5205 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5206 | ||
820a803f | 5207 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5208 | rc = -EIO; /* bad smb */ |
5209 | } else { | |
5210 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5211 | response_data = | |
5212 | (FILE_SYSTEM_UNIX_INFO | |
5213 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5214 | data_offset); | |
5215 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5216 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5217 | } |
5218 | } | |
5219 | cifs_buf_release(pSMB); | |
5220 | ||
5221 | if (rc == -EAGAIN) | |
5222 | goto QFSUnixRetry; | |
5223 | ||
5224 | ||
5225 | return rc; | |
5226 | } | |
5227 | ||
ac67055e | 5228 | int |
6d5786a3 | 5229 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5230 | { |
5231 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5232 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5233 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5234 | int rc = 0; | |
5235 | int bytes_returned = 0; | |
5236 | __u16 params, param_offset, offset, byte_count; | |
5237 | ||
b6b38f70 | 5238 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 5239 | SETFSUnixRetry: |
f26282c9 | 5240 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5241 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5242 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5243 | if (rc) |
5244 | return rc; | |
5245 | ||
5246 | params = 4; /* 2 bytes zero followed by info level. */ | |
5247 | pSMB->MaxSetupCount = 0; | |
5248 | pSMB->Reserved = 0; | |
5249 | pSMB->Flags = 0; | |
5250 | pSMB->Timeout = 0; | |
5251 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5252 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5253 | - 4; | |
ac67055e JA |
5254 | offset = param_offset + params; |
5255 | ||
5256 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5257 | /* BB find exact max SMB PDU from sess structure BB */ |
5258 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5259 | pSMB->SetupCount = 1; |
5260 | pSMB->Reserved3 = 0; | |
5261 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5262 | byte_count = 1 /* pad */ + params + 12; | |
5263 | ||
5264 | pSMB->DataCount = cpu_to_le16(12); | |
5265 | pSMB->ParameterCount = cpu_to_le16(params); | |
5266 | pSMB->TotalDataCount = pSMB->DataCount; | |
5267 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5268 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5269 | pSMB->DataOffset = cpu_to_le16(offset); | |
5270 | ||
5271 | /* Params. */ | |
5272 | pSMB->FileNum = 0; | |
5273 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5274 | ||
5275 | /* Data. */ | |
5276 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5277 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5278 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5279 | ||
be8e3b00 | 5280 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5281 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5282 | ||
5283 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5284 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5285 | if (rc) { | |
b6b38f70 | 5286 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
5287 | } else { /* decode response */ |
5288 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5289 | if (rc) |
ac67055e | 5290 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5291 | } |
5292 | cifs_buf_release(pSMB); | |
5293 | ||
5294 | if (rc == -EAGAIN) | |
5295 | goto SETFSUnixRetry; | |
5296 | ||
5297 | return rc; | |
5298 | } | |
5299 | ||
5300 | ||
1da177e4 LT |
5301 | |
5302 | int | |
6d5786a3 | 5303 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5304 | struct kstatfs *FSData) |
1da177e4 LT |
5305 | { |
5306 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5307 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5308 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5309 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5310 | int rc = 0; | |
5311 | int bytes_returned = 0; | |
5312 | __u16 params, byte_count; | |
5313 | ||
b6b38f70 | 5314 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5315 | QFSPosixRetry: |
5316 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5317 | (void **) &pSMBr); | |
5318 | if (rc) | |
5319 | return rc; | |
5320 | ||
5321 | params = 2; /* level */ | |
5322 | pSMB->TotalDataCount = 0; | |
5323 | pSMB->DataCount = 0; | |
5324 | pSMB->DataOffset = 0; | |
5325 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5326 | /* BB find exact max SMB PDU from sess structure BB */ |
5327 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5328 | pSMB->MaxSetupCount = 0; |
5329 | pSMB->Reserved = 0; | |
5330 | pSMB->Flags = 0; | |
5331 | pSMB->Timeout = 0; | |
5332 | pSMB->Reserved2 = 0; | |
5333 | byte_count = params + 1 /* pad */ ; | |
5334 | pSMB->ParameterCount = cpu_to_le16(params); | |
5335 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5336 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5337 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5338 | pSMB->SetupCount = 1; |
5339 | pSMB->Reserved3 = 0; | |
5340 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5341 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5342 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5343 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5344 | ||
5345 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5346 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5347 | if (rc) { | |
b6b38f70 | 5348 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5349 | } else { /* decode response */ |
5350 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5351 | ||
820a803f | 5352 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5353 | rc = -EIO; /* bad smb */ |
5354 | } else { | |
5355 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5356 | response_data = | |
5357 | (FILE_SYSTEM_POSIX_INFO | |
5358 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5359 | data_offset); | |
5360 | FSData->f_bsize = | |
5361 | le32_to_cpu(response_data->BlockSize); | |
5362 | FSData->f_blocks = | |
5363 | le64_to_cpu(response_data->TotalBlocks); | |
5364 | FSData->f_bfree = | |
5365 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5366 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5367 | FSData->f_bavail = FSData->f_bfree; |
5368 | } else { | |
5369 | FSData->f_bavail = | |
50c2f753 | 5370 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5371 | } |
790fe579 | 5372 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5373 | FSData->f_files = |
50c2f753 | 5374 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5375 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5376 | FSData->f_ffree = |
50c2f753 | 5377 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5378 | } |
5379 | } | |
5380 | cifs_buf_release(pSMB); | |
5381 | ||
5382 | if (rc == -EAGAIN) | |
5383 | goto QFSPosixRetry; | |
5384 | ||
5385 | return rc; | |
5386 | } | |
5387 | ||
5388 | ||
d1433418 PS |
5389 | /* |
5390 | * We can not use write of zero bytes trick to set file size due to need for | |
5391 | * large file support. Also note that this SetPathInfo is preferred to | |
5392 | * SetFileInfo based method in next routine which is only needed to work around | |
5393 | * a sharing violation bugin Samba which this routine can run into. | |
5394 | */ | |
1da177e4 | 5395 | int |
6d5786a3 | 5396 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5397 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5398 | bool set_allocation) | |
1da177e4 LT |
5399 | { |
5400 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5401 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5402 | struct file_end_of_file_info *parm_data; | |
5403 | int name_len; | |
5404 | int rc = 0; | |
5405 | int bytes_returned = 0; | |
d1433418 PS |
5406 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
5407 | ||
1da177e4 LT |
5408 | __u16 params, byte_count, data_count, param_offset, offset; |
5409 | ||
b6b38f70 | 5410 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5411 | SetEOFRetry: |
5412 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5413 | (void **) &pSMBr); | |
5414 | if (rc) | |
5415 | return rc; | |
5416 | ||
5417 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5418 | name_len = | |
d1433418 PS |
5419 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5420 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5421 | name_len++; /* trailing null */ |
5422 | name_len *= 2; | |
3e87d803 | 5423 | } else { /* BB improve the check for buffer overruns BB */ |
d1433418 | 5424 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5425 | name_len++; /* trailing null */ |
d1433418 | 5426 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5427 | } |
5428 | params = 6 + name_len; | |
26f57364 | 5429 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5430 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5431 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5432 | pSMB->MaxSetupCount = 0; |
5433 | pSMB->Reserved = 0; | |
5434 | pSMB->Flags = 0; | |
5435 | pSMB->Timeout = 0; | |
5436 | pSMB->Reserved2 = 0; | |
5437 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5438 | InformationLevel) - 4; |
1da177e4 | 5439 | offset = param_offset + params; |
d1433418 | 5440 | if (set_allocation) { |
50c2f753 SF |
5441 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5442 | pSMB->InformationLevel = | |
5443 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5444 | else | |
5445 | pSMB->InformationLevel = | |
5446 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5447 | } else /* Set File Size */ { | |
1da177e4 LT |
5448 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5449 | pSMB->InformationLevel = | |
50c2f753 | 5450 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5451 | else |
5452 | pSMB->InformationLevel = | |
50c2f753 | 5453 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5454 | } |
5455 | ||
5456 | parm_data = | |
5457 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5458 | offset); | |
5459 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5460 | pSMB->DataOffset = cpu_to_le16(offset); | |
5461 | pSMB->SetupCount = 1; | |
5462 | pSMB->Reserved3 = 0; | |
5463 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5464 | byte_count = 3 /* pad */ + params + data_count; | |
5465 | pSMB->DataCount = cpu_to_le16(data_count); | |
5466 | pSMB->TotalDataCount = pSMB->DataCount; | |
5467 | pSMB->ParameterCount = cpu_to_le16(params); | |
5468 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5469 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5470 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5471 | parm_data->FileSize = cpu_to_le64(size); |
5472 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5473 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5474 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5475 | if (rc) |
b6b38f70 | 5476 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5477 | |
5478 | cifs_buf_release(pSMB); | |
5479 | ||
5480 | if (rc == -EAGAIN) | |
5481 | goto SetEOFRetry; | |
5482 | ||
5483 | return rc; | |
5484 | } | |
5485 | ||
5486 | int | |
d1433418 PS |
5487 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5488 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5489 | { |
5490 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5491 | struct file_end_of_file_info *parm_data; |
5492 | int rc = 0; | |
1da177e4 LT |
5493 | __u16 params, param_offset, offset, byte_count, count; |
5494 | ||
b6b38f70 JP |
5495 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5496 | (long long)size); | |
cd63499c SF |
5497 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5498 | ||
1da177e4 LT |
5499 | if (rc) |
5500 | return rc; | |
5501 | ||
d1433418 PS |
5502 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5503 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5504 | |
1da177e4 LT |
5505 | params = 6; |
5506 | pSMB->MaxSetupCount = 0; | |
5507 | pSMB->Reserved = 0; | |
5508 | pSMB->Flags = 0; | |
5509 | pSMB->Timeout = 0; | |
5510 | pSMB->Reserved2 = 0; | |
5511 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5512 | offset = param_offset + params; | |
5513 | ||
1da177e4 LT |
5514 | count = sizeof(struct file_end_of_file_info); |
5515 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5516 | /* BB find exact max SMB PDU from sess structure BB */ |
5517 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5518 | pSMB->SetupCount = 1; |
5519 | pSMB->Reserved3 = 0; | |
5520 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5521 | byte_count = 3 /* pad */ + params + count; | |
5522 | pSMB->DataCount = cpu_to_le16(count); | |
5523 | pSMB->ParameterCount = cpu_to_le16(params); | |
5524 | pSMB->TotalDataCount = pSMB->DataCount; | |
5525 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5526 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5527 | parm_data = | |
50c2f753 SF |
5528 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5529 | + offset); | |
1da177e4 LT |
5530 | pSMB->DataOffset = cpu_to_le16(offset); |
5531 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5532 | pSMB->Fid = cfile->fid.netfid; |
5533 | if (set_allocation) { | |
1da177e4 LT |
5534 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5535 | pSMB->InformationLevel = | |
5536 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5537 | else | |
5538 | pSMB->InformationLevel = | |
5539 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5540 | } else /* Set File Size */ { |
1da177e4 LT |
5541 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5542 | pSMB->InformationLevel = | |
50c2f753 | 5543 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5544 | else |
5545 | pSMB->InformationLevel = | |
50c2f753 | 5546 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5547 | } |
5548 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5549 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5550 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5551 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5552 | if (rc) { |
b6b38f70 | 5553 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5554 | } |
5555 | ||
50c2f753 | 5556 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5557 | since file handle passed in no longer valid */ |
5558 | ||
5559 | return rc; | |
5560 | } | |
5561 | ||
50c2f753 | 5562 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5563 | an open handle, rather than by pathname - this is awkward due to |
5564 | potential access conflicts on the open, but it is unavoidable for these | |
5565 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5566 | time and resort to the original setpathinfo level which takes the ancient | |
5567 | DOS time format with 2 second granularity */ | |
5568 | int | |
6d5786a3 | 5569 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5570 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5571 | { |
5572 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5573 | char *data_offset; |
5574 | int rc = 0; | |
1da177e4 LT |
5575 | __u16 params, param_offset, offset, byte_count, count; |
5576 | ||
b6b38f70 | 5577 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5578 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5579 | ||
1da177e4 LT |
5580 | if (rc) |
5581 | return rc; | |
5582 | ||
2dd2dfa0 JL |
5583 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5584 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5585 | |
1da177e4 LT |
5586 | params = 6; |
5587 | pSMB->MaxSetupCount = 0; | |
5588 | pSMB->Reserved = 0; | |
5589 | pSMB->Flags = 0; | |
5590 | pSMB->Timeout = 0; | |
5591 | pSMB->Reserved2 = 0; | |
5592 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5593 | offset = param_offset + params; | |
5594 | ||
b2a3ad9c JL |
5595 | data_offset = (char *)pSMB + |
5596 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5597 | |
26f57364 | 5598 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5599 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5600 | /* BB find max SMB PDU from sess */ |
5601 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5602 | pSMB->SetupCount = 1; |
5603 | pSMB->Reserved3 = 0; | |
5604 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5605 | byte_count = 3 /* pad */ + params + count; | |
5606 | pSMB->DataCount = cpu_to_le16(count); | |
5607 | pSMB->ParameterCount = cpu_to_le16(params); | |
5608 | pSMB->TotalDataCount = pSMB->DataCount; | |
5609 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5610 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5611 | pSMB->DataOffset = cpu_to_le16(offset); | |
5612 | pSMB->Fid = fid; | |
5613 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5614 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5615 | else | |
5616 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5617 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5618 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5619 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5620 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5621 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5622 | if (rc) |
b6b38f70 | 5623 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5624 | |
50c2f753 | 5625 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5626 | since file handle passed in no longer valid */ |
5627 | ||
5628 | return rc; | |
5629 | } | |
5630 | ||
6d22f098 | 5631 | int |
6d5786a3 | 5632 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5633 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5634 | { | |
5635 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5636 | char *data_offset; | |
5637 | int rc = 0; | |
5638 | __u16 params, param_offset, offset, byte_count, count; | |
5639 | ||
b6b38f70 | 5640 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5641 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5642 | ||
5643 | if (rc) | |
5644 | return rc; | |
5645 | ||
5646 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5647 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5648 | ||
5649 | params = 6; | |
5650 | pSMB->MaxSetupCount = 0; | |
5651 | pSMB->Reserved = 0; | |
5652 | pSMB->Flags = 0; | |
5653 | pSMB->Timeout = 0; | |
5654 | pSMB->Reserved2 = 0; | |
5655 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5656 | offset = param_offset + params; | |
5657 | ||
5658 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5659 | ||
5660 | count = 1; | |
5661 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5662 | /* BB find max SMB PDU from sess */ | |
5663 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5664 | pSMB->SetupCount = 1; | |
5665 | pSMB->Reserved3 = 0; | |
5666 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5667 | byte_count = 3 /* pad */ + params + count; | |
5668 | pSMB->DataCount = cpu_to_le16(count); | |
5669 | pSMB->ParameterCount = cpu_to_le16(params); | |
5670 | pSMB->TotalDataCount = pSMB->DataCount; | |
5671 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5672 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5673 | pSMB->DataOffset = cpu_to_le16(offset); | |
5674 | pSMB->Fid = fid; | |
5675 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5676 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5677 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5678 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5679 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5680 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5681 | if (rc) |
b6b38f70 | 5682 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5683 | |
5684 | return rc; | |
5685 | } | |
1da177e4 LT |
5686 | |
5687 | int | |
6d5786a3 | 5688 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5689 | const char *fileName, const FILE_BASIC_INFO *data, |
5690 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5691 | { |
5692 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5693 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5694 | int name_len; | |
5695 | int rc = 0; | |
5696 | int bytes_returned = 0; | |
5697 | char *data_offset; | |
5698 | __u16 params, param_offset, offset, byte_count, count; | |
5699 | ||
b6b38f70 | 5700 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5701 | |
5702 | SetTimesRetry: | |
5703 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5704 | (void **) &pSMBr); | |
5705 | if (rc) | |
5706 | return rc; | |
5707 | ||
5708 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5709 | name_len = | |
acbbb76a SF |
5710 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5711 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5712 | name_len++; /* trailing null */ |
5713 | name_len *= 2; | |
50c2f753 | 5714 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5715 | name_len = strnlen(fileName, PATH_MAX); |
5716 | name_len++; /* trailing null */ | |
5717 | strncpy(pSMB->FileName, fileName, name_len); | |
5718 | } | |
5719 | ||
5720 | params = 6 + name_len; | |
26f57364 | 5721 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5722 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5723 | /* BB find max SMB PDU from sess structure BB */ |
5724 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5725 | pSMB->MaxSetupCount = 0; |
5726 | pSMB->Reserved = 0; | |
5727 | pSMB->Flags = 0; | |
5728 | pSMB->Timeout = 0; | |
5729 | pSMB->Reserved2 = 0; | |
5730 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5731 | InformationLevel) - 4; |
1da177e4 LT |
5732 | offset = param_offset + params; |
5733 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5734 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5735 | pSMB->DataOffset = cpu_to_le16(offset); | |
5736 | pSMB->SetupCount = 1; | |
5737 | pSMB->Reserved3 = 0; | |
5738 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5739 | byte_count = 3 /* pad */ + params + count; | |
5740 | ||
5741 | pSMB->DataCount = cpu_to_le16(count); | |
5742 | pSMB->ParameterCount = cpu_to_le16(params); | |
5743 | pSMB->TotalDataCount = pSMB->DataCount; | |
5744 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5745 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5746 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5747 | else | |
5748 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5749 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5750 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5751 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5752 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5753 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5754 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5755 | if (rc) |
b6b38f70 | 5756 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5757 | |
5758 | cifs_buf_release(pSMB); | |
5759 | ||
5760 | if (rc == -EAGAIN) | |
5761 | goto SetTimesRetry; | |
5762 | ||
5763 | return rc; | |
5764 | } | |
5765 | ||
5766 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5767 | /* Can be used to set attributes */ | |
5768 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5769 | handling it anyway and NT4 was what we thought it would be needed for | |
5770 | Do not delete it until we prove whether needed for Win9x though */ | |
5771 | int | |
6d5786a3 | 5772 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5773 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5774 | { | |
5775 | SETATTR_REQ *pSMB = NULL; | |
5776 | SETATTR_RSP *pSMBr = NULL; | |
5777 | int rc = 0; | |
5778 | int bytes_returned; | |
5779 | int name_len; | |
5780 | ||
b6b38f70 | 5781 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5782 | |
5783 | SetAttrLgcyRetry: | |
5784 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5785 | (void **) &pSMBr); | |
5786 | if (rc) | |
5787 | return rc; | |
5788 | ||
5789 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5790 | name_len = | |
acbbb76a SF |
5791 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5792 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5793 | name_len++; /* trailing null */ |
5794 | name_len *= 2; | |
50c2f753 | 5795 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5796 | name_len = strnlen(fileName, PATH_MAX); |
5797 | name_len++; /* trailing null */ | |
5798 | strncpy(pSMB->fileName, fileName, name_len); | |
5799 | } | |
5800 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5801 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5802 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5803 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5804 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5805 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5806 | if (rc) |
b6b38f70 | 5807 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5808 | |
5809 | cifs_buf_release(pSMB); | |
5810 | ||
5811 | if (rc == -EAGAIN) | |
5812 | goto SetAttrLgcyRetry; | |
5813 | ||
5814 | return rc; | |
5815 | } | |
5816 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5817 | ||
654cf14a JL |
5818 | static void |
5819 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5820 | const struct cifs_unix_set_info_args *args) | |
5821 | { | |
5822 | u64 mode = args->mode; | |
5823 | ||
5824 | /* | |
5825 | * Samba server ignores set of file size to zero due to bugs in some | |
5826 | * older clients, but we should be precise - we use SetFileSize to | |
5827 | * set file size and do not want to truncate file size to zero | |
25985edc | 5828 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5829 | * zero instead of -1 here |
5830 | */ | |
5831 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5832 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5833 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5834 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5835 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5836 | data_offset->Uid = cpu_to_le64(args->uid); | |
5837 | data_offset->Gid = cpu_to_le64(args->gid); | |
5838 | /* better to leave device as zero when it is */ | |
5839 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5840 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5841 | data_offset->Permissions = cpu_to_le64(mode); | |
5842 | ||
5843 | if (S_ISREG(mode)) | |
5844 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5845 | else if (S_ISDIR(mode)) | |
5846 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5847 | else if (S_ISLNK(mode)) | |
5848 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5849 | else if (S_ISCHR(mode)) | |
5850 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5851 | else if (S_ISBLK(mode)) | |
5852 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5853 | else if (S_ISFIFO(mode)) | |
5854 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5855 | else if (S_ISSOCK(mode)) | |
5856 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5857 | } | |
5858 | ||
3bbeeb3c | 5859 | int |
6d5786a3 | 5860 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5861 | const struct cifs_unix_set_info_args *args, |
5862 | u16 fid, u32 pid_of_opener) | |
5863 | { | |
5864 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5865 | char *data_offset; |
3bbeeb3c JL |
5866 | int rc = 0; |
5867 | u16 params, param_offset, offset, byte_count, count; | |
5868 | ||
b6b38f70 | 5869 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5870 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5871 | ||
5872 | if (rc) | |
5873 | return rc; | |
5874 | ||
5875 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5876 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5877 | ||
5878 | params = 6; | |
5879 | pSMB->MaxSetupCount = 0; | |
5880 | pSMB->Reserved = 0; | |
5881 | pSMB->Flags = 0; | |
5882 | pSMB->Timeout = 0; | |
5883 | pSMB->Reserved2 = 0; | |
5884 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5885 | offset = param_offset + params; | |
5886 | ||
b2a3ad9c JL |
5887 | data_offset = (char *)pSMB + |
5888 | offsetof(struct smb_hdr, Protocol) + offset; | |
5889 | ||
3bbeeb3c JL |
5890 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5891 | ||
5892 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5893 | /* BB find max SMB PDU from sess */ | |
5894 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5895 | pSMB->SetupCount = 1; | |
5896 | pSMB->Reserved3 = 0; | |
5897 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5898 | byte_count = 3 /* pad */ + params + count; | |
5899 | pSMB->DataCount = cpu_to_le16(count); | |
5900 | pSMB->ParameterCount = cpu_to_le16(params); | |
5901 | pSMB->TotalDataCount = pSMB->DataCount; | |
5902 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5903 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5904 | pSMB->DataOffset = cpu_to_le16(offset); | |
5905 | pSMB->Fid = fid; | |
5906 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5907 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5908 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5909 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5910 | ||
b2a3ad9c | 5911 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5912 | |
792af7b0 | 5913 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5914 | if (rc) |
b6b38f70 | 5915 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5916 | |
5917 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5918 | since file handle passed in no longer valid */ | |
5919 | ||
5920 | return rc; | |
5921 | } | |
5922 | ||
1da177e4 | 5923 | int |
6d5786a3 | 5924 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5925 | const char *file_name, |
01ea95e3 JL |
5926 | const struct cifs_unix_set_info_args *args, |
5927 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5928 | { |
5929 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5930 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5931 | int name_len; | |
5932 | int rc = 0; | |
5933 | int bytes_returned = 0; | |
5934 | FILE_UNIX_BASIC_INFO *data_offset; | |
5935 | __u16 params, param_offset, offset, count, byte_count; | |
5936 | ||
b6b38f70 | 5937 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5938 | setPermsRetry: |
5939 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5940 | (void **) &pSMBr); | |
5941 | if (rc) | |
5942 | return rc; | |
5943 | ||
5944 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5945 | name_len = | |
ff691e96 | 5946 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5947 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5948 | name_len++; /* trailing null */ |
5949 | name_len *= 2; | |
3e87d803 | 5950 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 5951 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5952 | name_len++; /* trailing null */ |
ff691e96 | 5953 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5954 | } |
5955 | ||
5956 | params = 6 + name_len; | |
26f57364 | 5957 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5958 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5959 | /* BB find max SMB PDU from sess structure BB */ |
5960 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5961 | pSMB->MaxSetupCount = 0; |
5962 | pSMB->Reserved = 0; | |
5963 | pSMB->Flags = 0; | |
5964 | pSMB->Timeout = 0; | |
5965 | pSMB->Reserved2 = 0; | |
5966 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5967 | InformationLevel) - 4; |
1da177e4 LT |
5968 | offset = param_offset + params; |
5969 | data_offset = | |
5970 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5971 | offset); | |
5972 | memset(data_offset, 0, count); | |
5973 | pSMB->DataOffset = cpu_to_le16(offset); | |
5974 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5975 | pSMB->SetupCount = 1; | |
5976 | pSMB->Reserved3 = 0; | |
5977 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5978 | byte_count = 3 /* pad */ + params + count; | |
5979 | pSMB->ParameterCount = cpu_to_le16(params); | |
5980 | pSMB->DataCount = cpu_to_le16(count); | |
5981 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5982 | pSMB->TotalDataCount = pSMB->DataCount; | |
5983 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5984 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5985 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5986 | |
654cf14a | 5987 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5988 | |
5989 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5990 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5991 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5992 | if (rc) |
b6b38f70 | 5993 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5994 | |
0d817bc0 | 5995 | cifs_buf_release(pSMB); |
1da177e4 LT |
5996 | if (rc == -EAGAIN) |
5997 | goto setPermsRetry; | |
5998 | return rc; | |
5999 | } | |
6000 | ||
1da177e4 | 6001 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6002 | /* |
6003 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6004 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6005 | * it looks for that attribute name and stuffs that value into the EAData | |
6006 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6007 | * buffer. In both cases, the return value is either the length of the | |
6008 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6009 | * the data isn't copied to it, but the length is returned. | |
6010 | */ | |
1da177e4 | 6011 | ssize_t |
6d5786a3 | 6012 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6013 | const unsigned char *searchName, const unsigned char *ea_name, |
6014 | char *EAData, size_t buf_size, | |
6015 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6016 | { |
6017 | /* BB assumes one setup word */ | |
6018 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6019 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6020 | int rc = 0; | |
6021 | int bytes_returned; | |
6e462b9f | 6022 | int list_len; |
f0d3868b | 6023 | struct fealist *ea_response_data; |
50c2f753 SF |
6024 | struct fea *temp_fea; |
6025 | char *temp_ptr; | |
0cd126b5 | 6026 | char *end_of_smb; |
f0d3868b | 6027 | __u16 params, byte_count, data_offset; |
5980fc96 | 6028 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6029 | |
b6b38f70 | 6030 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
6031 | QAllEAsRetry: |
6032 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6033 | (void **) &pSMBr); | |
6034 | if (rc) | |
6035 | return rc; | |
6036 | ||
6037 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6038 | list_len = |
acbbb76a SF |
6039 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6040 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6041 | list_len++; /* trailing null */ |
6042 | list_len *= 2; | |
1da177e4 | 6043 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6044 | list_len = strnlen(searchName, PATH_MAX); |
6045 | list_len++; /* trailing null */ | |
6046 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6047 | } |
6048 | ||
6e462b9f | 6049 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6050 | pSMB->TotalDataCount = 0; |
6051 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6052 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6053 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6054 | pSMB->MaxSetupCount = 0; |
6055 | pSMB->Reserved = 0; | |
6056 | pSMB->Flags = 0; | |
6057 | pSMB->Timeout = 0; | |
6058 | pSMB->Reserved2 = 0; | |
6059 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6060 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6061 | pSMB->DataCount = 0; |
6062 | pSMB->DataOffset = 0; | |
6063 | pSMB->SetupCount = 1; | |
6064 | pSMB->Reserved3 = 0; | |
6065 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6066 | byte_count = params + 1 /* pad */ ; | |
6067 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6068 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6069 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6070 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6071 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6072 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6073 | ||
6074 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6075 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6076 | if (rc) { | |
b6b38f70 | 6077 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
6078 | goto QAllEAsOut; |
6079 | } | |
1da177e4 | 6080 | |
f0d3868b JL |
6081 | |
6082 | /* BB also check enough total bytes returned */ | |
6083 | /* BB we need to improve the validity checking | |
6084 | of these trans2 responses */ | |
6085 | ||
6086 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6087 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6088 | rc = -EIO; /* bad smb */ |
6089 | goto QAllEAsOut; | |
6090 | } | |
6091 | ||
6092 | /* check that length of list is not more than bcc */ | |
6093 | /* check that each entry does not go beyond length | |
6094 | of list */ | |
6095 | /* check that each element of each entry does not | |
6096 | go beyond end of list */ | |
6097 | /* validate_trans2_offsets() */ | |
6098 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6099 | ||
6100 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6101 | ea_response_data = (struct fealist *) | |
6102 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6103 | ||
6e462b9f | 6104 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 6105 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 6106 | if (list_len <= 8) { |
b6b38f70 | 6107 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
6108 | goto QAllEAsOut; |
6109 | } | |
6110 | ||
0cd126b5 | 6111 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6112 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6113 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 6114 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
6115 | rc = -EIO; |
6116 | goto QAllEAsOut; | |
6117 | } | |
6118 | ||
f0d3868b | 6119 | /* account for ea list len */ |
6e462b9f | 6120 | list_len -= 4; |
f0d3868b JL |
6121 | temp_fea = ea_response_data->list; |
6122 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6123 | while (list_len > 0) { |
122ca007 | 6124 | unsigned int name_len; |
f0d3868b | 6125 | __u16 value_len; |
0cd126b5 | 6126 | |
6e462b9f | 6127 | list_len -= 4; |
f0d3868b | 6128 | temp_ptr += 4; |
0cd126b5 JL |
6129 | /* make sure we can read name_len and value_len */ |
6130 | if (list_len < 0) { | |
b6b38f70 | 6131 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6132 | rc = -EIO; |
6133 | goto QAllEAsOut; | |
6134 | } | |
6135 | ||
6136 | name_len = temp_fea->name_len; | |
6137 | value_len = le16_to_cpu(temp_fea->value_len); | |
6138 | list_len -= name_len + 1 + value_len; | |
6139 | if (list_len < 0) { | |
b6b38f70 | 6140 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6141 | rc = -EIO; |
6142 | goto QAllEAsOut; | |
6143 | } | |
6144 | ||
31c0519f | 6145 | if (ea_name) { |
91d065c4 | 6146 | if (ea_name_len == name_len && |
ac423446 | 6147 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6148 | temp_ptr += name_len + 1; |
6149 | rc = value_len; | |
6150 | if (buf_size == 0) | |
6151 | goto QAllEAsOut; | |
6152 | if ((size_t)value_len > buf_size) { | |
6153 | rc = -ERANGE; | |
6154 | goto QAllEAsOut; | |
6155 | } | |
6156 | memcpy(EAData, temp_ptr, value_len); | |
6157 | goto QAllEAsOut; | |
6158 | } | |
f0d3868b | 6159 | } else { |
31c0519f JL |
6160 | /* account for prefix user. and trailing null */ |
6161 | rc += (5 + 1 + name_len); | |
6162 | if (rc < (int) buf_size) { | |
6163 | memcpy(EAData, "user.", 5); | |
6164 | EAData += 5; | |
6165 | memcpy(EAData, temp_ptr, name_len); | |
6166 | EAData += name_len; | |
6167 | /* null terminate name */ | |
6168 | *EAData = 0; | |
6169 | ++EAData; | |
6170 | } else if (buf_size == 0) { | |
6171 | /* skip copy - calc size only */ | |
6172 | } else { | |
6173 | /* stop before overrun buffer */ | |
6174 | rc = -ERANGE; | |
6175 | break; | |
6176 | } | |
1da177e4 | 6177 | } |
0cd126b5 | 6178 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6179 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6180 | } |
f0d3868b | 6181 | |
31c0519f JL |
6182 | /* didn't find the named attribute */ |
6183 | if (ea_name) | |
6184 | rc = -ENODATA; | |
6185 | ||
f0d3868b | 6186 | QAllEAsOut: |
0d817bc0 | 6187 | cifs_buf_release(pSMB); |
1da177e4 LT |
6188 | if (rc == -EAGAIN) |
6189 | goto QAllEAsRetry; | |
6190 | ||
6191 | return (ssize_t)rc; | |
6192 | } | |
6193 | ||
1da177e4 | 6194 | int |
6d5786a3 PS |
6195 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6196 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6197 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6198 | int remap) | |
1da177e4 LT |
6199 | { |
6200 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6201 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6202 | struct fealist *parm_data; | |
6203 | int name_len; | |
6204 | int rc = 0; | |
6205 | int bytes_returned = 0; | |
6206 | __u16 params, param_offset, byte_count, offset, count; | |
6207 | ||
b6b38f70 | 6208 | cFYI(1, "In SetEA"); |
1da177e4 LT |
6209 | SetEARetry: |
6210 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6211 | (void **) &pSMBr); | |
6212 | if (rc) | |
6213 | return rc; | |
6214 | ||
6215 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6216 | name_len = | |
acbbb76a SF |
6217 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6218 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6219 | name_len++; /* trailing null */ |
6220 | name_len *= 2; | |
50c2f753 | 6221 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6222 | name_len = strnlen(fileName, PATH_MAX); |
6223 | name_len++; /* trailing null */ | |
6224 | strncpy(pSMB->FileName, fileName, name_len); | |
6225 | } | |
6226 | ||
6227 | params = 6 + name_len; | |
6228 | ||
6229 | /* done calculating parms using name_len of file name, | |
6230 | now use name_len to calculate length of ea name | |
6231 | we are going to create in the inode xattrs */ | |
790fe579 | 6232 | if (ea_name == NULL) |
1da177e4 LT |
6233 | name_len = 0; |
6234 | else | |
50c2f753 | 6235 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6236 | |
dae5dbdb | 6237 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6238 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6239 | /* BB find max SMB PDU from sess */ |
6240 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6241 | pSMB->MaxSetupCount = 0; |
6242 | pSMB->Reserved = 0; | |
6243 | pSMB->Flags = 0; | |
6244 | pSMB->Timeout = 0; | |
6245 | pSMB->Reserved2 = 0; | |
6246 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6247 | InformationLevel) - 4; |
1da177e4 LT |
6248 | offset = param_offset + params; |
6249 | pSMB->InformationLevel = | |
6250 | cpu_to_le16(SMB_SET_FILE_EA); | |
6251 | ||
6252 | parm_data = | |
6253 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6254 | offset); | |
6255 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6256 | pSMB->DataOffset = cpu_to_le16(offset); | |
6257 | pSMB->SetupCount = 1; | |
6258 | pSMB->Reserved3 = 0; | |
6259 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6260 | byte_count = 3 /* pad */ + params + count; | |
6261 | pSMB->DataCount = cpu_to_le16(count); | |
6262 | parm_data->list_len = cpu_to_le32(count); | |
6263 | parm_data->list[0].EA_flags = 0; | |
6264 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6265 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6266 | /* EA names are always ASCII */ |
790fe579 | 6267 | if (ea_name) |
50c2f753 | 6268 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6269 | parm_data->list[0].name[name_len] = 0; |
6270 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6271 | /* caller ensures that ea_value_len is less than 64K but | |
6272 | we need to ensure that it fits within the smb */ | |
6273 | ||
50c2f753 SF |
6274 | /*BB add length check to see if it would fit in |
6275 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6276 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6277 | if (ea_value_len) | |
50c2f753 SF |
6278 | memcpy(parm_data->list[0].name+name_len+1, |
6279 | ea_value, ea_value_len); | |
1da177e4 LT |
6280 | |
6281 | pSMB->TotalDataCount = pSMB->DataCount; | |
6282 | pSMB->ParameterCount = cpu_to_le16(params); | |
6283 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6284 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6285 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6286 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6287 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6288 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6289 | if (rc) |
b6b38f70 | 6290 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
6291 | |
6292 | cifs_buf_release(pSMB); | |
6293 | ||
6294 | if (rc == -EAGAIN) | |
6295 | goto SetEARetry; | |
6296 | ||
6297 | return rc; | |
6298 | } | |
1da177e4 | 6299 | #endif |
0eff0e26 SF |
6300 | |
6301 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6302 | /* | |
6303 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6304 | * to allow network clients (such as Windows) to display updated | |
6305 | * lists of files in directory listings automatically when | |
6306 | * files are added by one user when another user has the | |
6307 | * same directory open on their desktop. The Linux cifs kernel | |
6308 | * client hooked into the kernel side of this interface for | |
6309 | * the same reason, but ironically when the VFS moved from | |
6310 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6311 | * network file system clients (the most obvious use case | |
6312 | * for notify interfaces is when multiple users can update | |
6313 | * the contents of the same directory - exactly what network | |
6314 | * file systems can do) although the server (Samba) could | |
6315 | * still use it. For the short term we leave the worker | |
6316 | * function ifdeffed out (below) until inotify is fixed | |
6317 | * in the VFS to make it easier to plug in network file | |
6318 | * system clients. If inotify turns out to be permanently | |
6319 | * incompatible for network fs clients, we could instead simply | |
6320 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6321 | */ | |
6d5786a3 | 6322 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6323 | const int notify_subdirs, const __u16 netfid, |
6324 | __u32 filter, struct file *pfile, int multishot, | |
6325 | const struct nls_table *nls_codepage) | |
6326 | { | |
6327 | int rc = 0; | |
6328 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6329 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6330 | struct dir_notify_req *dnotify_req; | |
6331 | int bytes_returned; | |
6332 | ||
6333 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6334 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6335 | (void **) &pSMBr); | |
6336 | if (rc) | |
6337 | return rc; | |
6338 | ||
6339 | pSMB->TotalParameterCount = 0 ; | |
6340 | pSMB->TotalDataCount = 0; | |
6341 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6342 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6343 | pSMB->MaxSetupCount = 4; |
6344 | pSMB->Reserved = 0; | |
6345 | pSMB->ParameterOffset = 0; | |
6346 | pSMB->DataCount = 0; | |
6347 | pSMB->DataOffset = 0; | |
6348 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6349 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6350 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6351 | if (notify_subdirs) | |
6352 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6353 | pSMB->Reserved2 = 0; | |
6354 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6355 | pSMB->Fid = netfid; /* file handle always le */ | |
6356 | pSMB->ByteCount = 0; | |
6357 | ||
6358 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6359 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6360 | CIFS_ASYNC_OP); | |
6361 | if (rc) { | |
6362 | cFYI(1, "Error in Notify = %d", rc); | |
6363 | } else { | |
6364 | /* Add file to outstanding requests */ | |
6365 | /* BB change to kmem cache alloc */ | |
6366 | dnotify_req = kmalloc( | |
6367 | sizeof(struct dir_notify_req), | |
6368 | GFP_KERNEL); | |
6369 | if (dnotify_req) { | |
6370 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6371 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6372 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6373 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6374 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6375 | dnotify_req->netfid = netfid; | |
6376 | dnotify_req->pfile = pfile; | |
6377 | dnotify_req->filter = filter; | |
6378 | dnotify_req->multishot = multishot; | |
6379 | spin_lock(&GlobalMid_Lock); | |
6380 | list_add_tail(&dnotify_req->lhead, | |
6381 | &GlobalDnotifyReqList); | |
6382 | spin_unlock(&GlobalMid_Lock); | |
6383 | } else | |
6384 | rc = -ENOMEM; | |
6385 | } | |
6386 | cifs_buf_release(pSMB); | |
6387 | return rc; | |
6388 | } | |
6389 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |