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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 LT |
34 | #include <linux/posix_acl_xattr.h> |
35 | #include <asm/uaccess.h> | |
36 | #include "cifspdu.h" | |
37 | #include "cifsglob.h" | |
d0d66c44 | 38 | #include "cifsacl.h" |
1da177e4 LT |
39 | #include "cifsproto.h" |
40 | #include "cifs_unicode.h" | |
41 | #include "cifs_debug.h" | |
42 | ||
43 | #ifdef CONFIG_CIFS_POSIX | |
44 | static struct { | |
45 | int index; | |
46 | char *name; | |
47 | } protocols[] = { | |
3979877e SF |
48 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
49 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 50 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 51 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 52 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 53 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
54 | {BAD_PROT, "\2"} |
55 | }; | |
56 | #else | |
57 | static struct { | |
58 | int index; | |
59 | char *name; | |
60 | } protocols[] = { | |
3979877e SF |
61 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
62 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 63 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 64 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 65 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
66 | {BAD_PROT, "\2"} |
67 | }; | |
68 | #endif | |
69 | ||
3979877e SF |
70 | /* define the number of elements in the cifs dialect array */ |
71 | #ifdef CONFIG_CIFS_POSIX | |
72 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 73 | #define CIFS_NUM_PROT 4 |
3979877e SF |
74 | #else |
75 | #define CIFS_NUM_PROT 2 | |
76 | #endif /* CIFS_WEAK_PW_HASH */ | |
77 | #else /* not posix */ | |
78 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 79 | #define CIFS_NUM_PROT 3 |
3979877e SF |
80 | #else |
81 | #define CIFS_NUM_PROT 1 | |
82 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
83 | #endif /* CIFS_POSIX */ | |
84 | ||
1da177e4 LT |
85 | /* Mark as invalid, all open files on tree connections since they |
86 | were closed when session to server was lost */ | |
790fe579 | 87 | static void mark_open_files_invalid(struct cifsTconInfo *pTcon) |
1da177e4 LT |
88 | { |
89 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
90 | struct list_head *tmp; |
91 | struct list_head *tmp1; | |
1da177e4 LT |
92 | |
93 | /* list all files open on tree connection and mark them invalid */ | |
4477288a | 94 | spin_lock(&cifs_file_list_lock); |
1da177e4 | 95 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
790fe579 | 96 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 97 | open_file->invalidHandle = true; |
3bc303c2 | 98 | open_file->oplock_break_cancelled = true; |
1da177e4 | 99 | } |
4477288a | 100 | spin_unlock(&cifs_file_list_lock); |
09d1db5c SF |
101 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
102 | to this tcon */ | |
1da177e4 LT |
103 | } |
104 | ||
9162ab20 JL |
105 | /* reconnect the socket, tcon, and smb session if needed */ |
106 | static int | |
107 | cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command) | |
108 | { | |
109 | int rc = 0; | |
110 | struct cifsSesInfo *ses; | |
111 | struct TCP_Server_Info *server; | |
112 | struct nls_table *nls_codepage; | |
113 | ||
114 | /* | |
115 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
116 | * tcp and smb session status done differently for those three - in the | |
117 | * calling routine | |
118 | */ | |
119 | if (!tcon) | |
120 | return 0; | |
121 | ||
122 | ses = tcon->ses; | |
123 | server = ses->server; | |
124 | ||
125 | /* | |
126 | * only tree disconnect, open, and write, (and ulogoff which does not | |
127 | * have tcon) are allowed as we start force umount | |
128 | */ | |
129 | if (tcon->tidStatus == CifsExiting) { | |
130 | if (smb_command != SMB_COM_WRITE_ANDX && | |
131 | smb_command != SMB_COM_OPEN_ANDX && | |
132 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
133 | cFYI(1, "can not send cmd %d while umounting", |
134 | smb_command); | |
9162ab20 JL |
135 | return -ENODEV; |
136 | } | |
137 | } | |
138 | ||
9162ab20 JL |
139 | /* |
140 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
141 | * greater than cifs socket timeout which is 7 seconds | |
142 | */ | |
143 | while (server->tcpStatus == CifsNeedReconnect) { | |
144 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 145 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 146 | |
fd88ce93 | 147 | /* are we still trying to reconnect? */ |
9162ab20 JL |
148 | if (server->tcpStatus != CifsNeedReconnect) |
149 | break; | |
150 | ||
151 | /* | |
152 | * on "soft" mounts we wait once. Hard mounts keep | |
153 | * retrying until process is killed or server comes | |
154 | * back on-line | |
155 | */ | |
d402539b | 156 | if (!tcon->retry) { |
b6b38f70 | 157 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
158 | return -EHOSTDOWN; |
159 | } | |
160 | } | |
161 | ||
162 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
163 | return 0; | |
164 | ||
165 | nls_codepage = load_nls_default(); | |
166 | ||
167 | /* | |
168 | * need to prevent multiple threads trying to simultaneously | |
169 | * reconnect the same SMB session | |
170 | */ | |
d7b619cf | 171 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
172 | rc = cifs_negotiate_protocol(0, ses); |
173 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
174 | rc = cifs_setup_session(0, ses, nls_codepage); |
175 | ||
176 | /* do we need to reconnect tcon? */ | |
177 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 178 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
179 | goto out; |
180 | } | |
181 | ||
182 | mark_open_files_invalid(tcon); | |
183 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 184 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 185 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
186 | |
187 | if (rc) | |
188 | goto out; | |
189 | ||
190 | /* | |
191 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
192 | * size shrinking | |
193 | */ | |
194 | atomic_inc(&tconInfoReconnectCount); | |
195 | ||
196 | /* tell server Unix caps we support */ | |
197 | if (ses->capabilities & CAP_UNIX) | |
198 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
199 | ||
200 | /* | |
201 | * Removed call to reopen open files here. It is safer (and faster) to | |
202 | * reopen files one at a time as needed in read and write. | |
203 | * | |
204 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
205 | */ | |
206 | ||
207 | out: | |
208 | /* | |
209 | * Check if handle based operation so we know whether we can continue | |
210 | * or not without returning to caller to reset file handle | |
211 | */ | |
212 | switch (smb_command) { | |
213 | case SMB_COM_READ_ANDX: | |
214 | case SMB_COM_WRITE_ANDX: | |
215 | case SMB_COM_CLOSE: | |
216 | case SMB_COM_FIND_CLOSE2: | |
217 | case SMB_COM_LOCKING_ANDX: | |
218 | rc = -EAGAIN; | |
219 | } | |
220 | ||
221 | unload_nls(nls_codepage); | |
222 | return rc; | |
223 | } | |
224 | ||
ad7a2926 SF |
225 | /* Allocate and return pointer to an SMB request buffer, and set basic |
226 | SMB information in the SMB header. If the return code is zero, this | |
227 | function must have filled in request_buf pointer */ | |
1da177e4 LT |
228 | static int |
229 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
ad7a2926 | 230 | void **request_buf) |
1da177e4 | 231 | { |
f569599a | 232 | int rc; |
1da177e4 | 233 | |
9162ab20 | 234 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 235 | if (rc) |
1da177e4 LT |
236 | return rc; |
237 | ||
238 | *request_buf = cifs_small_buf_get(); | |
239 | if (*request_buf == NULL) { | |
240 | /* BB should we add a retry in here if not a writepage? */ | |
241 | return -ENOMEM; | |
242 | } | |
243 | ||
63135e08 | 244 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 245 | tcon, wct); |
1da177e4 | 246 | |
790fe579 SF |
247 | if (tcon != NULL) |
248 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 249 | |
f569599a | 250 | return 0; |
5815449d SF |
251 | } |
252 | ||
12b3b8ff | 253 | int |
50c2f753 | 254 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 255 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
256 | { |
257 | int rc; | |
50c2f753 | 258 | struct smb_hdr *buffer; |
12b3b8ff | 259 | |
5815449d | 260 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 261 | if (rc) |
12b3b8ff SF |
262 | return rc; |
263 | ||
04fdabe1 | 264 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
265 | buffer->Mid = GetNextMid(ses->server); |
266 | if (ses->capabilities & CAP_UNICODE) | |
267 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 268 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
269 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
270 | ||
271 | /* uid, tid can stay at zero as set in header assemble */ | |
272 | ||
50c2f753 | 273 | /* BB add support for turning on the signing when |
12b3b8ff SF |
274 | this function is used after 1st of session setup requests */ |
275 | ||
276 | return rc; | |
277 | } | |
1da177e4 LT |
278 | |
279 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
280 | static int | |
f569599a JL |
281 | __smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, |
282 | void **request_buf, void **response_buf) | |
1da177e4 | 283 | { |
1da177e4 LT |
284 | *request_buf = cifs_buf_get(); |
285 | if (*request_buf == NULL) { | |
286 | /* BB should we add a retry in here if not a writepage? */ | |
287 | return -ENOMEM; | |
288 | } | |
289 | /* Although the original thought was we needed the response buf for */ | |
290 | /* potential retries of smb operations it turns out we can determine */ | |
291 | /* from the mid flags when the request buffer can be resent without */ | |
292 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 293 | if (response_buf) |
50c2f753 | 294 | *response_buf = *request_buf; |
1da177e4 LT |
295 | |
296 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 297 | wct); |
1da177e4 | 298 | |
790fe579 SF |
299 | if (tcon != NULL) |
300 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 301 | |
f569599a JL |
302 | return 0; |
303 | } | |
304 | ||
305 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
306 | static int | |
307 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
308 | void **request_buf, void **response_buf) | |
309 | { | |
310 | int rc; | |
311 | ||
312 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
313 | if (rc) | |
314 | return rc; | |
315 | ||
316 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
317 | } | |
318 | ||
319 | static int | |
320 | smb_init_no_reconnect(int smb_command, int wct, struct cifsTconInfo *tcon, | |
321 | void **request_buf, void **response_buf) | |
322 | { | |
323 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
324 | return -EHOSTDOWN; | |
325 | ||
326 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
327 | } |
328 | ||
50c2f753 | 329 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 330 | { |
12df83c9 JL |
331 | unsigned int total_size; |
332 | ||
333 | /* check for plausible wct */ | |
334 | if (pSMB->hdr.WordCount < 10) | |
335 | goto vt2_err; | |
1da177e4 | 336 | |
1da177e4 | 337 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
338 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
339 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
340 | goto vt2_err; | |
341 | ||
12df83c9 JL |
342 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
343 | if (total_size >= 512) | |
344 | goto vt2_err; | |
345 | ||
fd5707e1 JL |
346 | /* check that bcc is at least as big as parms + data, and that it is |
347 | * less than negotiated smb buffer | |
348 | */ | |
12df83c9 JL |
349 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
350 | if (total_size > get_bcc(&pSMB->hdr) || | |
351 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
352 | goto vt2_err; | |
353 | ||
354 | return 0; | |
355 | vt2_err: | |
50c2f753 | 356 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 357 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 358 | return -EINVAL; |
1da177e4 | 359 | } |
690c522f | 360 | |
1da177e4 LT |
361 | int |
362 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
363 | { | |
364 | NEGOTIATE_REQ *pSMB; | |
365 | NEGOTIATE_RSP *pSMBr; | |
366 | int rc = 0; | |
367 | int bytes_returned; | |
3979877e | 368 | int i; |
50c2f753 | 369 | struct TCP_Server_Info *server; |
1da177e4 | 370 | u16 count; |
750d1151 | 371 | unsigned int secFlags; |
1da177e4 | 372 | |
790fe579 | 373 | if (ses->server) |
1da177e4 LT |
374 | server = ses->server; |
375 | else { | |
376 | rc = -EIO; | |
377 | return rc; | |
378 | } | |
379 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
380 | (void **) &pSMB, (void **) &pSMBr); | |
381 | if (rc) | |
382 | return rc; | |
750d1151 SF |
383 | |
384 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 385 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 386 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 387 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 388 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 389 | |
b6b38f70 | 390 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 391 | |
1982c344 | 392 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 393 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 394 | |
100c1ddc | 395 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 396 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 397 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 398 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 399 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 400 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
401 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
402 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 403 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
404 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
405 | } | |
50c2f753 | 406 | |
3979877e | 407 | count = 0; |
50c2f753 | 408 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
409 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
410 | count += strlen(protocols[i].name) + 1; | |
411 | /* null at end of source and target buffers anyway */ | |
412 | } | |
1da177e4 LT |
413 | pSMB->hdr.smb_buf_length += count; |
414 | pSMB->ByteCount = cpu_to_le16(count); | |
415 | ||
416 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
417 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 418 | if (rc != 0) |
254e55ed SF |
419 | goto neg_err_exit; |
420 | ||
9bf67e51 JL |
421 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
422 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 423 | /* Check wct = 1 error case */ |
9bf67e51 | 424 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 425 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 426 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
427 | could not negotiate a common dialect */ |
428 | rc = -EOPNOTSUPP; | |
429 | goto neg_err_exit; | |
50c2f753 | 430 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 431 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
432 | && ((server->dialect == LANMAN_PROT) |
433 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 434 | __s16 tmp; |
50c2f753 | 435 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 436 | |
790fe579 | 437 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 438 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
439 | server->secType = LANMAN; |
440 | else { | |
b6b38f70 JP |
441 | cERROR(1, "mount failed weak security disabled" |
442 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
443 | rc = -EOPNOTSUPP; |
444 | goto neg_err_exit; | |
50c2f753 | 445 | } |
254e55ed SF |
446 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
447 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
448 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 449 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 450 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
451 | /* even though we do not use raw we might as well set this |
452 | accurately, in case we ever find a need for it */ | |
790fe579 | 453 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 454 | server->max_rw = 0xFF00; |
254e55ed SF |
455 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
456 | } else { | |
eca6acf9 | 457 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
458 | server->capabilities = CAP_MPX_MODE; |
459 | } | |
b815f1e5 | 460 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 461 | if (tmp == -1) { |
25ee4a98 SF |
462 | /* OS/2 often does not set timezone therefore |
463 | * we must use server time to calc time zone. | |
b815f1e5 SF |
464 | * Could deviate slightly from the right zone. |
465 | * Smallest defined timezone difference is 15 minutes | |
466 | * (i.e. Nepal). Rounding up/down is done to match | |
467 | * this requirement. | |
25ee4a98 | 468 | */ |
b815f1e5 | 469 | int val, seconds, remain, result; |
25ee4a98 SF |
470 | struct timespec ts, utc; |
471 | utc = CURRENT_TIME; | |
c4a2c08d JL |
472 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
473 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 474 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 475 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 476 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 477 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 478 | seconds = abs(val); |
947a5067 | 479 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 480 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 481 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 482 | result += MIN_TZ_ADJ; |
790fe579 | 483 | if (val < 0) |
ad7a2926 | 484 | result = -result; |
b815f1e5 | 485 | server->timeAdj = result; |
25ee4a98 | 486 | } else { |
b815f1e5 SF |
487 | server->timeAdj = (int)tmp; |
488 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 489 | } |
b6b38f70 | 490 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 491 | |
3979877e | 492 | |
254e55ed | 493 | /* BB get server time for time conversions and add |
50c2f753 | 494 | code to use it and timezone since this is not UTC */ |
3979877e | 495 | |
50c2f753 | 496 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 497 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 498 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed SF |
499 | CIFS_CRYPTO_KEY_SIZE); |
500 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
501 | rc = -EIO; /* need cryptkey unless plain text */ | |
502 | goto neg_err_exit; | |
503 | } | |
3979877e | 504 | |
f19159dc | 505 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
506 | /* we will not end up setting signing flags - as no signing |
507 | was in LANMAN and server did not return the flags on */ | |
508 | goto signing_check; | |
7c7b25bc | 509 | #else /* weak security disabled */ |
790fe579 | 510 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
511 | cERROR(1, "mount failed, cifs module not built " |
512 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 513 | rc = -EOPNOTSUPP; |
7c7b25bc | 514 | #endif /* WEAK_PW_HASH */ |
254e55ed | 515 | goto neg_err_exit; |
790fe579 | 516 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
517 | /* unknown wct */ |
518 | rc = -EOPNOTSUPP; | |
519 | goto neg_err_exit; | |
520 | } | |
521 | /* else wct == 17 NTLM */ | |
522 | server->secMode = pSMBr->SecurityMode; | |
790fe579 | 523 | if ((server->secMode & SECMODE_USER) == 0) |
b6b38f70 | 524 | cFYI(1, "share mode security"); |
bdc4bf6e | 525 | |
790fe579 | 526 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 527 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 528 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 529 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
530 | cERROR(1, "Server requests plain text password" |
531 | " but client support disabled"); | |
9312f675 | 532 | |
790fe579 | 533 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 534 | server->secType = NTLMv2; |
790fe579 | 535 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 536 | server->secType = NTLM; |
790fe579 | 537 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 538 | server->secType = NTLMv2; |
a013689d SF |
539 | else if (secFlags & CIFSSEC_MAY_KRB5) |
540 | server->secType = Kerberos; | |
ac683924 | 541 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 542 | server->secType = RawNTLMSSP; |
a013689d SF |
543 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
544 | server->secType = LANMAN; | |
a013689d SF |
545 | else { |
546 | rc = -EOPNOTSUPP; | |
b6b38f70 | 547 | cERROR(1, "Invalid security type"); |
a013689d SF |
548 | goto neg_err_exit; |
549 | } | |
550 | /* else ... any others ...? */ | |
254e55ed SF |
551 | |
552 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
553 | little endian */ | |
554 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
555 | /* probably no need to store and check maxvcs */ | |
556 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 557 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 558 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 559 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 560 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
561 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
562 | server->timeAdj *= 60; | |
254e55ed | 563 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 564 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed SF |
565 | CIFS_CRYPTO_KEY_SIZE); |
566 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
567 | && (pSMBr->EncryptionKeyLength == 0)) { | |
568 | /* decode security blob */ | |
569 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
570 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
571 | goto neg_err_exit; | |
572 | } | |
1da177e4 | 573 | |
254e55ed SF |
574 | /* BB might be helpful to save off the domain of server here */ |
575 | ||
50c2f753 | 576 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed SF |
577 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
578 | count = pSMBr->ByteCount; | |
e187e44e | 579 | if (count < 16) { |
254e55ed | 580 | rc = -EIO; |
e187e44e JL |
581 | goto neg_err_exit; |
582 | } | |
3f9bcca7 | 583 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 584 | if (server->srv_count > 1) { |
3f9bcca7 | 585 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
586 | if (memcmp(server->server_GUID, |
587 | pSMBr->u.extended_response. | |
588 | GUID, 16) != 0) { | |
b6b38f70 | 589 | cFYI(1, "server UID changed"); |
254e55ed | 590 | memcpy(server->server_GUID, |
e187e44e JL |
591 | pSMBr->u.extended_response.GUID, |
592 | 16); | |
593 | } | |
e7ddee90 | 594 | } else { |
3f9bcca7 | 595 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
596 | memcpy(server->server_GUID, |
597 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 598 | } |
e187e44e JL |
599 | |
600 | if (count == 16) { | |
601 | server->secType = RawNTLMSSP; | |
254e55ed SF |
602 | } else { |
603 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
604 | SecurityBlob, count - 16, |
605 | server); | |
ef571cad | 606 | if (rc == 1) |
e545937a | 607 | rc = 0; |
ef571cad | 608 | else |
254e55ed | 609 | rc = -EINVAL; |
2b149f11 SP |
610 | if (server->secType == Kerberos) { |
611 | if (!server->sec_kerberos && | |
612 | !server->sec_mskerberos) | |
613 | rc = -EOPNOTSUPP; | |
614 | } else if (server->secType == RawNTLMSSP) { | |
615 | if (!server->sec_ntlmssp) | |
616 | rc = -EOPNOTSUPP; | |
617 | } else | |
618 | rc = -EOPNOTSUPP; | |
1da177e4 | 619 | } |
254e55ed SF |
620 | } else |
621 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
622 | ||
6344a423 | 623 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 624 | signing_check: |
6344a423 | 625 | #endif |
762e5ab7 SF |
626 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
627 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
628 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 629 | cFYI(1, "Signing disabled"); |
abb63d6c | 630 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 631 | cERROR(1, "Server requires " |
7111d214 | 632 | "packet signing to be enabled in " |
b6b38f70 | 633 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
634 | rc = -EOPNOTSUPP; |
635 | } | |
50c2f753 | 636 | server->secMode &= |
254e55ed | 637 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
638 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
639 | /* signing required */ | |
b6b38f70 | 640 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
762e5ab7 SF |
641 | if ((server->secMode & |
642 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
b6b38f70 | 643 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 644 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
645 | } else |
646 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
647 | } else { | |
648 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 649 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 650 | server->secMode &= |
254e55ed | 651 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 652 | } |
50c2f753 SF |
653 | |
654 | neg_err_exit: | |
4a6d87f1 | 655 | cifs_buf_release(pSMB); |
254e55ed | 656 | |
b6b38f70 | 657 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
658 | return rc; |
659 | } | |
660 | ||
661 | int | |
662 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
663 | { | |
664 | struct smb_hdr *smb_buffer; | |
1da177e4 | 665 | int rc = 0; |
1da177e4 | 666 | |
b6b38f70 | 667 | cFYI(1, "In tree disconnect"); |
1da177e4 | 668 | |
f1987b44 JL |
669 | /* BB: do we need to check this? These should never be NULL. */ |
670 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
671 | return -EIO; | |
1da177e4 | 672 | |
f1987b44 JL |
673 | /* |
674 | * No need to return error on this operation if tid invalidated and | |
675 | * closed on server already e.g. due to tcp session crashing. Also, | |
676 | * the tcon is no longer on the list, so no need to take lock before | |
677 | * checking this. | |
678 | */ | |
268875b9 | 679 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 680 | return 0; |
1da177e4 | 681 | |
50c2f753 | 682 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 683 | (void **)&smb_buffer); |
f1987b44 | 684 | if (rc) |
1da177e4 | 685 | return rc; |
133672ef SF |
686 | |
687 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 688 | if (rc) |
b6b38f70 | 689 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 690 | |
50c2f753 | 691 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 692 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
693 | if (rc == -EAGAIN) |
694 | rc = 0; | |
695 | ||
696 | return rc; | |
697 | } | |
698 | ||
766fdbb5 JL |
699 | /* |
700 | * This is a no-op for now. We're not really interested in the reply, but | |
701 | * rather in the fact that the server sent one and that server->lstrp | |
702 | * gets updated. | |
703 | * | |
704 | * FIXME: maybe we should consider checking that the reply matches request? | |
705 | */ | |
706 | static void | |
707 | cifs_echo_callback(struct mid_q_entry *mid) | |
708 | { | |
709 | struct TCP_Server_Info *server = mid->callback_data; | |
710 | ||
711 | DeleteMidQEntry(mid); | |
712 | atomic_dec(&server->inFlight); | |
713 | wake_up(&server->request_q); | |
714 | } | |
715 | ||
716 | int | |
717 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
718 | { | |
719 | ECHO_REQ *smb; | |
720 | int rc = 0; | |
721 | ||
722 | cFYI(1, "In echo request"); | |
723 | ||
724 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
725 | if (rc) | |
726 | return rc; | |
727 | ||
728 | /* set up echo request */ | |
5443d130 | 729 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
730 | smb->hdr.WordCount = 1; |
731 | put_unaligned_le16(1, &smb->EchoCount); | |
732 | put_bcc_le(1, &smb->hdr); | |
766fdbb5 JL |
733 | smb->Data[0] = 'a'; |
734 | smb->hdr.smb_buf_length += 3; | |
735 | ||
736 | rc = cifs_call_async(server, (struct smb_hdr *)smb, | |
737 | cifs_echo_callback, server); | |
738 | if (rc) | |
739 | cFYI(1, "Echo request failed: %d", rc); | |
740 | ||
741 | cifs_small_buf_release(smb); | |
742 | ||
743 | return rc; | |
744 | } | |
745 | ||
1da177e4 LT |
746 | int |
747 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
748 | { | |
1da177e4 LT |
749 | LOGOFF_ANDX_REQ *pSMB; |
750 | int rc = 0; | |
1da177e4 | 751 | |
b6b38f70 | 752 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 753 | |
14fbf50d JL |
754 | /* |
755 | * BB: do we need to check validity of ses and server? They should | |
756 | * always be valid since we have an active reference. If not, that | |
757 | * should probably be a BUG() | |
758 | */ | |
759 | if (!ses || !ses->server) | |
3b795210 SF |
760 | return -EIO; |
761 | ||
d7b619cf | 762 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
763 | if (ses->need_reconnect) |
764 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
765 | already closed due to reconnect */ | |
1da177e4 LT |
766 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
767 | if (rc) { | |
d7b619cf | 768 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
769 | return rc; |
770 | } | |
771 | ||
3b795210 | 772 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 773 | |
3b795210 | 774 | if (ses->server->secMode & |
1da177e4 LT |
775 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
776 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
777 | |
778 | pSMB->hdr.Uid = ses->Suid; | |
779 | ||
780 | pSMB->AndXCommand = 0xFF; | |
133672ef | 781 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 782 | session_already_dead: |
d7b619cf | 783 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
784 | |
785 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 786 | since server closed smb session, no sense reporting |
1da177e4 LT |
787 | error */ |
788 | if (rc == -EAGAIN) | |
789 | rc = 0; | |
790 | return rc; | |
791 | } | |
792 | ||
2d785a50 SF |
793 | int |
794 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
795 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
796 | { | |
797 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
798 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
799 | struct unlink_psx_rq *pRqD; | |
800 | int name_len; | |
801 | int rc = 0; | |
802 | int bytes_returned = 0; | |
803 | __u16 params, param_offset, offset, byte_count; | |
804 | ||
b6b38f70 | 805 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
806 | PsxDelete: |
807 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
808 | (void **) &pSMBr); | |
809 | if (rc) | |
810 | return rc; | |
811 | ||
812 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
813 | name_len = | |
814 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
815 | PATH_MAX, nls_codepage, remap); | |
816 | name_len++; /* trailing null */ | |
817 | name_len *= 2; | |
818 | } else { /* BB add path length overrun check */ | |
819 | name_len = strnlen(fileName, PATH_MAX); | |
820 | name_len++; /* trailing null */ | |
821 | strncpy(pSMB->FileName, fileName, name_len); | |
822 | } | |
823 | ||
824 | params = 6 + name_len; | |
825 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
826 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
827 | pSMB->MaxSetupCount = 0; | |
828 | pSMB->Reserved = 0; | |
829 | pSMB->Flags = 0; | |
830 | pSMB->Timeout = 0; | |
831 | pSMB->Reserved2 = 0; | |
832 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
833 | InformationLevel) - 4; | |
834 | offset = param_offset + params; | |
835 | ||
836 | /* Setup pointer to Request Data (inode type) */ | |
837 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
838 | pRqD->type = cpu_to_le16(type); | |
839 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
840 | pSMB->DataOffset = cpu_to_le16(offset); | |
841 | pSMB->SetupCount = 1; | |
842 | pSMB->Reserved3 = 0; | |
843 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
844 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
845 | ||
846 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
847 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
848 | pSMB->ParameterCount = cpu_to_le16(params); | |
849 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
850 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
851 | pSMB->Reserved4 = 0; | |
852 | pSMB->hdr.smb_buf_length += byte_count; | |
853 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
854 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
855 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 856 | if (rc) |
b6b38f70 | 857 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
858 | cifs_buf_release(pSMB); |
859 | ||
860 | cifs_stats_inc(&tcon->num_deletes); | |
861 | ||
862 | if (rc == -EAGAIN) | |
863 | goto PsxDelete; | |
864 | ||
865 | return rc; | |
866 | } | |
867 | ||
1da177e4 | 868 | int |
737b758c SF |
869 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
870 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
871 | { |
872 | DELETE_FILE_REQ *pSMB = NULL; | |
873 | DELETE_FILE_RSP *pSMBr = NULL; | |
874 | int rc = 0; | |
875 | int bytes_returned; | |
876 | int name_len; | |
877 | ||
878 | DelFileRetry: | |
879 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
880 | (void **) &pSMBr); | |
881 | if (rc) | |
882 | return rc; | |
883 | ||
884 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
885 | name_len = | |
50c2f753 | 886 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 887 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
888 | name_len++; /* trailing null */ |
889 | name_len *= 2; | |
09d1db5c | 890 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
891 | name_len = strnlen(fileName, PATH_MAX); |
892 | name_len++; /* trailing null */ | |
893 | strncpy(pSMB->fileName, fileName, name_len); | |
894 | } | |
895 | pSMB->SearchAttributes = | |
896 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
897 | pSMB->BufferFormat = 0x04; | |
898 | pSMB->hdr.smb_buf_length += name_len + 1; | |
899 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
900 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
901 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 902 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 903 | if (rc) |
b6b38f70 | 904 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
905 | |
906 | cifs_buf_release(pSMB); | |
907 | if (rc == -EAGAIN) | |
908 | goto DelFileRetry; | |
909 | ||
910 | return rc; | |
911 | } | |
912 | ||
913 | int | |
50c2f753 | 914 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 915 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
916 | { |
917 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
918 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
919 | int rc = 0; | |
920 | int bytes_returned; | |
921 | int name_len; | |
922 | ||
b6b38f70 | 923 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
924 | RmDirRetry: |
925 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
926 | (void **) &pSMBr); | |
927 | if (rc) | |
928 | return rc; | |
929 | ||
930 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
931 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
932 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
933 | name_len++; /* trailing null */ |
934 | name_len *= 2; | |
09d1db5c | 935 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
936 | name_len = strnlen(dirName, PATH_MAX); |
937 | name_len++; /* trailing null */ | |
938 | strncpy(pSMB->DirName, dirName, name_len); | |
939 | } | |
940 | ||
941 | pSMB->BufferFormat = 0x04; | |
942 | pSMB->hdr.smb_buf_length += name_len + 1; | |
943 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
944 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
945 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 946 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 947 | if (rc) |
b6b38f70 | 948 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
949 | |
950 | cifs_buf_release(pSMB); | |
951 | if (rc == -EAGAIN) | |
952 | goto RmDirRetry; | |
953 | return rc; | |
954 | } | |
955 | ||
956 | int | |
957 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 958 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
959 | { |
960 | int rc = 0; | |
961 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
962 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
963 | int bytes_returned; | |
964 | int name_len; | |
965 | ||
b6b38f70 | 966 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
967 | MkDirRetry: |
968 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
969 | (void **) &pSMBr); | |
970 | if (rc) | |
971 | return rc; | |
972 | ||
973 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 974 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 975 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
976 | name_len++; /* trailing null */ |
977 | name_len *= 2; | |
09d1db5c | 978 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
979 | name_len = strnlen(name, PATH_MAX); |
980 | name_len++; /* trailing null */ | |
981 | strncpy(pSMB->DirName, name, name_len); | |
982 | } | |
983 | ||
984 | pSMB->BufferFormat = 0x04; | |
985 | pSMB->hdr.smb_buf_length += name_len + 1; | |
986 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
987 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
988 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 989 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 990 | if (rc) |
b6b38f70 | 991 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 992 | |
1da177e4 LT |
993 | cifs_buf_release(pSMB); |
994 | if (rc == -EAGAIN) | |
995 | goto MkDirRetry; | |
996 | return rc; | |
997 | } | |
998 | ||
2dd29d31 SF |
999 | int |
1000 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 1001 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1002 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1003 | const struct nls_table *nls_codepage, int remap) |
1004 | { | |
1005 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1006 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1007 | int name_len; | |
1008 | int rc = 0; | |
1009 | int bytes_returned = 0; | |
2dd29d31 | 1010 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1011 | OPEN_PSX_REQ *pdata; |
1012 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1013 | |
b6b38f70 | 1014 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1015 | PsxCreat: |
1016 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1017 | (void **) &pSMBr); | |
1018 | if (rc) | |
1019 | return rc; | |
1020 | ||
1021 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1022 | name_len = | |
1023 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1024 | PATH_MAX, nls_codepage, remap); | |
1025 | name_len++; /* trailing null */ | |
1026 | name_len *= 2; | |
1027 | } else { /* BB improve the check for buffer overruns BB */ | |
1028 | name_len = strnlen(name, PATH_MAX); | |
1029 | name_len++; /* trailing null */ | |
1030 | strncpy(pSMB->FileName, name, name_len); | |
1031 | } | |
1032 | ||
1033 | params = 6 + name_len; | |
1034 | count = sizeof(OPEN_PSX_REQ); | |
1035 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1036 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1037 | pSMB->MaxSetupCount = 0; | |
1038 | pSMB->Reserved = 0; | |
1039 | pSMB->Flags = 0; | |
1040 | pSMB->Timeout = 0; | |
1041 | pSMB->Reserved2 = 0; | |
1042 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1043 | InformationLevel) - 4; |
2dd29d31 | 1044 | offset = param_offset + params; |
2dd29d31 | 1045 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1046 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1047 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1048 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1049 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1050 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1051 | pSMB->DataOffset = cpu_to_le16(offset); | |
1052 | pSMB->SetupCount = 1; | |
1053 | pSMB->Reserved3 = 0; | |
1054 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1055 | byte_count = 3 /* pad */ + params + count; | |
1056 | ||
1057 | pSMB->DataCount = cpu_to_le16(count); | |
1058 | pSMB->ParameterCount = cpu_to_le16(params); | |
1059 | pSMB->TotalDataCount = pSMB->DataCount; | |
1060 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1061 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1062 | pSMB->Reserved4 = 0; | |
50c2f753 | 1063 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1064 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1065 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1066 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1067 | if (rc) { | |
b6b38f70 | 1068 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1069 | goto psx_create_err; |
1070 | } | |
1071 | ||
b6b38f70 | 1072 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1073 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1074 | ||
1075 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1076 | rc = -EIO; /* bad smb */ | |
1077 | goto psx_create_err; | |
1078 | } | |
1079 | ||
1080 | /* copy return information to pRetData */ | |
50c2f753 | 1081 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1082 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1083 | |
2dd29d31 | 1084 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1085 | if (netfid) |
2dd29d31 SF |
1086 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1087 | /* Let caller know file was created so we can set the mode. */ | |
1088 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1089 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1090 | *pOplock |= CIFS_CREATE_ACTION; |
1091 | /* check to make sure response data is there */ | |
8f2376ad CG |
1092 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1093 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1094 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1095 | } else { |
790fe579 | 1096 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1097 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1098 | cERROR(1, "Open response data too small"); |
8f2376ad | 1099 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1100 | goto psx_create_err; |
1101 | } | |
50c2f753 | 1102 | memcpy((char *) pRetData, |
cbac3cba | 1103 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1104 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1105 | } |
2dd29d31 SF |
1106 | |
1107 | psx_create_err: | |
1108 | cifs_buf_release(pSMB); | |
1109 | ||
65bc98b0 SF |
1110 | if (posix_flags & SMB_O_DIRECTORY) |
1111 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1112 | else | |
1113 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1114 | |
1115 | if (rc == -EAGAIN) | |
1116 | goto PsxCreat; | |
1117 | ||
50c2f753 | 1118 | return rc; |
2dd29d31 SF |
1119 | } |
1120 | ||
a9d02ad4 SF |
1121 | static __u16 convert_disposition(int disposition) |
1122 | { | |
1123 | __u16 ofun = 0; | |
1124 | ||
1125 | switch (disposition) { | |
1126 | case FILE_SUPERSEDE: | |
1127 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1128 | break; | |
1129 | case FILE_OPEN: | |
1130 | ofun = SMBOPEN_OAPPEND; | |
1131 | break; | |
1132 | case FILE_CREATE: | |
1133 | ofun = SMBOPEN_OCREATE; | |
1134 | break; | |
1135 | case FILE_OPEN_IF: | |
1136 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1137 | break; | |
1138 | case FILE_OVERWRITE: | |
1139 | ofun = SMBOPEN_OTRUNC; | |
1140 | break; | |
1141 | case FILE_OVERWRITE_IF: | |
1142 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1143 | break; | |
1144 | default: | |
b6b38f70 | 1145 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1146 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1147 | } | |
1148 | return ofun; | |
1149 | } | |
1150 | ||
35fc37d5 JL |
1151 | static int |
1152 | access_flags_to_smbopen_mode(const int access_flags) | |
1153 | { | |
1154 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1155 | ||
1156 | if (masked_flags == GENERIC_READ) | |
1157 | return SMBOPEN_READ; | |
1158 | else if (masked_flags == GENERIC_WRITE) | |
1159 | return SMBOPEN_WRITE; | |
1160 | ||
1161 | /* just go for read/write */ | |
1162 | return SMBOPEN_READWRITE; | |
1163 | } | |
1164 | ||
a9d02ad4 SF |
1165 | int |
1166 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1167 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1168 | const int access_flags, const int create_options, __u16 *netfid, |
1169 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1170 | const struct nls_table *nls_codepage, int remap) |
1171 | { | |
1172 | int rc = -EACCES; | |
1173 | OPENX_REQ *pSMB = NULL; | |
1174 | OPENX_RSP *pSMBr = NULL; | |
1175 | int bytes_returned; | |
1176 | int name_len; | |
1177 | __u16 count; | |
1178 | ||
1179 | OldOpenRetry: | |
1180 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1181 | (void **) &pSMBr); | |
1182 | if (rc) | |
1183 | return rc; | |
1184 | ||
1185 | pSMB->AndXCommand = 0xFF; /* none */ | |
1186 | ||
1187 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1188 | count = 1; /* account for one byte pad to word boundary */ | |
1189 | name_len = | |
1190 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1191 | fileName, PATH_MAX, nls_codepage, remap); | |
1192 | name_len++; /* trailing null */ | |
1193 | name_len *= 2; | |
1194 | } else { /* BB improve check for buffer overruns BB */ | |
1195 | count = 0; /* no pad */ | |
1196 | name_len = strnlen(fileName, PATH_MAX); | |
1197 | name_len++; /* trailing null */ | |
1198 | strncpy(pSMB->fileName, fileName, name_len); | |
1199 | } | |
1200 | if (*pOplock & REQ_OPLOCK) | |
1201 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1202 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1203 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1204 | |
a9d02ad4 | 1205 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1206 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1207 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1208 | /* set file as system file if special file such | |
1209 | as fifo and server expecting SFU style and | |
1210 | no Unix extensions */ | |
1211 | ||
790fe579 SF |
1212 | if (create_options & CREATE_OPTION_SPECIAL) |
1213 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1214 | else /* BB FIXME BB */ |
1215 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1216 | |
67750fb9 JL |
1217 | if (create_options & CREATE_OPTION_READONLY) |
1218 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1219 | |
1220 | /* BB FIXME BB */ | |
50c2f753 SF |
1221 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1222 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1223 | /* BB FIXME END BB */ |
3e87d803 SF |
1224 | |
1225 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1226 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1227 | count += name_len; |
1228 | pSMB->hdr.smb_buf_length += count; | |
1229 | ||
1230 | pSMB->ByteCount = cpu_to_le16(count); | |
1231 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1232 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1233 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1234 | cifs_stats_inc(&tcon->num_opens); |
1235 | if (rc) { | |
b6b38f70 | 1236 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1237 | } else { |
1238 | /* BB verify if wct == 15 */ | |
1239 | ||
582d21e5 | 1240 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1241 | |
1242 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1243 | /* Let caller know file was created so we can set the mode. */ | |
1244 | /* Do we care about the CreateAction in any other cases? */ | |
1245 | /* BB FIXME BB */ | |
790fe579 | 1246 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1247 | *pOplock |= CIFS_CREATE_ACTION; */ |
1248 | /* BB FIXME END */ | |
1249 | ||
790fe579 | 1250 | if (pfile_info) { |
a9d02ad4 SF |
1251 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1252 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1253 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1254 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1255 | pfile_info->Attributes = |
50c2f753 | 1256 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1257 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1258 | pfile_info->AllocationSize = |
1259 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1260 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1261 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1262 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1263 | } |
1264 | } | |
1265 | ||
1266 | cifs_buf_release(pSMB); | |
1267 | if (rc == -EAGAIN) | |
1268 | goto OldOpenRetry; | |
1269 | return rc; | |
1270 | } | |
1271 | ||
1da177e4 LT |
1272 | int |
1273 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1274 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1275 | const int access_flags, const int create_options, __u16 *netfid, |
1276 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1277 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1278 | { |
1279 | int rc = -EACCES; | |
1280 | OPEN_REQ *pSMB = NULL; | |
1281 | OPEN_RSP *pSMBr = NULL; | |
1282 | int bytes_returned; | |
1283 | int name_len; | |
1284 | __u16 count; | |
1285 | ||
1286 | openRetry: | |
1287 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1288 | (void **) &pSMBr); | |
1289 | if (rc) | |
1290 | return rc; | |
1291 | ||
1292 | pSMB->AndXCommand = 0xFF; /* none */ | |
1293 | ||
1294 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1295 | count = 1; /* account for one byte pad to word boundary */ | |
1296 | name_len = | |
b1a45695 | 1297 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1298 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1299 | name_len++; /* trailing null */ |
1300 | name_len *= 2; | |
1301 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1302 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1303 | count = 0; /* no pad */ |
1304 | name_len = strnlen(fileName, PATH_MAX); | |
1305 | name_len++; /* trailing null */ | |
1306 | pSMB->NameLength = cpu_to_le16(name_len); | |
1307 | strncpy(pSMB->fileName, fileName, name_len); | |
1308 | } | |
1309 | if (*pOplock & REQ_OPLOCK) | |
1310 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1311 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1312 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1313 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1314 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1315 | /* set file as system file if special file such |
1316 | as fifo and server expecting SFU style and | |
1317 | no Unix extensions */ | |
790fe579 | 1318 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1319 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1320 | else | |
1321 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1322 | |
1da177e4 LT |
1323 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1324 | /* but it helps speed up case sensitive checks for other | |
1325 | servers such as Samba */ | |
1326 | if (tcon->ses->capabilities & CAP_UNIX) | |
1327 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1328 | ||
67750fb9 JL |
1329 | if (create_options & CREATE_OPTION_READONLY) |
1330 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1331 | ||
1da177e4 LT |
1332 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1333 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1334 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1335 | /* BB Expirement with various impersonation levels and verify */ |
1336 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1337 | pSMB->SecurityFlags = |
1338 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1339 | ||
1340 | count += name_len; | |
1341 | pSMB->hdr.smb_buf_length += count; | |
1342 | ||
1343 | pSMB->ByteCount = cpu_to_le16(count); | |
1344 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1345 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1346 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1347 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1348 | if (rc) { |
b6b38f70 | 1349 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1350 | } else { |
09d1db5c | 1351 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1352 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1353 | /* Let caller know file was created so we can set the mode. */ | |
1354 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1355 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1356 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1357 | if (pfile_info) { |
61e74801 SF |
1358 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1359 | 36 /* CreationTime to Attributes */); | |
1360 | /* the file_info buf is endian converted by caller */ | |
1361 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1362 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1363 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1364 | pfile_info->DeletePending = 0; | |
1da177e4 | 1365 | } |
1da177e4 | 1366 | } |
a5a2b489 | 1367 | |
1da177e4 LT |
1368 | cifs_buf_release(pSMB); |
1369 | if (rc == -EAGAIN) | |
1370 | goto openRetry; | |
1371 | return rc; | |
1372 | } | |
1373 | ||
1da177e4 | 1374 | int |
50c2f753 SF |
1375 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1376 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1377 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1378 | { |
1379 | int rc = -EACCES; | |
1380 | READ_REQ *pSMB = NULL; | |
1381 | READ_RSP *pSMBr = NULL; | |
1382 | char *pReadData = NULL; | |
bfa0d75a | 1383 | int wct; |
ec637e3f SF |
1384 | int resp_buf_type = 0; |
1385 | struct kvec iov[1]; | |
1da177e4 | 1386 | |
b6b38f70 | 1387 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1388 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1389 | wct = 12; |
4c3130ef | 1390 | else { |
bfa0d75a | 1391 | wct = 10; /* old style read */ |
4c3130ef SF |
1392 | if ((lseek >> 32) > 0) { |
1393 | /* can not handle this big offset for old */ | |
1394 | return -EIO; | |
1395 | } | |
1396 | } | |
1da177e4 LT |
1397 | |
1398 | *nbytes = 0; | |
ec637e3f | 1399 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1400 | if (rc) |
1401 | return rc; | |
1402 | ||
1403 | /* tcon and ses pointer are checked in smb_init */ | |
1404 | if (tcon->ses->server == NULL) | |
1405 | return -ECONNABORTED; | |
1406 | ||
ec637e3f | 1407 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1408 | pSMB->Fid = netfid; |
1409 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1410 | if (wct == 12) |
bfa0d75a | 1411 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1412 | |
1da177e4 LT |
1413 | pSMB->Remaining = 0; |
1414 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1415 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1416 | if (wct == 12) |
bfa0d75a SF |
1417 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1418 | else { | |
1419 | /* old style read */ | |
50c2f753 | 1420 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1421 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1422 | pSMBW->ByteCount = 0; |
bfa0d75a | 1423 | } |
ec637e3f SF |
1424 | |
1425 | iov[0].iov_base = (char *)pSMB; | |
1426 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
a761ac57 | 1427 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1428 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1429 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1430 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1431 | if (rc) { |
b6b38f70 | 1432 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1433 | } else { |
1434 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1435 | data_length = data_length << 16; | |
1436 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1437 | *nbytes = data_length; | |
1438 | ||
1439 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1440 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1441 | || (data_length > count)) { |
b6b38f70 JP |
1442 | cFYI(1, "bad length %d for count %d", |
1443 | data_length, count); | |
1da177e4 LT |
1444 | rc = -EIO; |
1445 | *nbytes = 0; | |
1446 | } else { | |
ec637e3f | 1447 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1448 | le16_to_cpu(pSMBr->DataOffset); |
1449 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1450 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1451 | rc = -EFAULT; |
26f57364 | 1452 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1453 | if (*buf) |
50c2f753 | 1454 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1455 | } |
1456 | } | |
1da177e4 | 1457 | |
4b8f930f | 1458 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1459 | if (*buf) { |
1460 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1461 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1462 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1463 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1464 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1465 | /* return buffer to caller to free */ |
1466 | *buf = iov[0].iov_base; | |
790fe579 | 1467 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1468 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1469 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1470 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1471 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1472 | |
1473 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1474 | since file handle passed in no longer valid */ |
1475 | return rc; | |
1476 | } | |
1477 | ||
ec637e3f | 1478 | |
1da177e4 LT |
1479 | int |
1480 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1481 | const int netfid, const unsigned int count, | |
1482 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1483 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1484 | { |
1485 | int rc = -EACCES; | |
1486 | WRITE_REQ *pSMB = NULL; | |
1487 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1488 | int bytes_returned, wct; |
1da177e4 LT |
1489 | __u32 bytes_sent; |
1490 | __u16 byte_count; | |
1491 | ||
a24e2d7d SF |
1492 | *nbytes = 0; |
1493 | ||
b6b38f70 | 1494 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1495 | if (tcon->ses == NULL) |
1c955187 SF |
1496 | return -ECONNABORTED; |
1497 | ||
790fe579 | 1498 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1499 | wct = 14; |
4c3130ef | 1500 | else { |
1c955187 | 1501 | wct = 12; |
4c3130ef SF |
1502 | if ((offset >> 32) > 0) { |
1503 | /* can not handle big offset for old srv */ | |
1504 | return -EIO; | |
1505 | } | |
1506 | } | |
1c955187 SF |
1507 | |
1508 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1509 | (void **) &pSMBr); |
1510 | if (rc) | |
1511 | return rc; | |
1512 | /* tcon and ses pointer are checked in smb_init */ | |
1513 | if (tcon->ses->server == NULL) | |
1514 | return -ECONNABORTED; | |
1515 | ||
1516 | pSMB->AndXCommand = 0xFF; /* none */ | |
1517 | pSMB->Fid = netfid; | |
1518 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1519 | if (wct == 14) |
1c955187 | 1520 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1521 | |
1da177e4 LT |
1522 | pSMB->Reserved = 0xFFFFFFFF; |
1523 | pSMB->WriteMode = 0; | |
1524 | pSMB->Remaining = 0; | |
1525 | ||
50c2f753 | 1526 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1527 | can send more if LARGE_WRITE_X capability returned by the server and if |
1528 | our buffer is big enough or if we convert to iovecs on socket writes | |
1529 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1530 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1531 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1532 | } else { | |
1533 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1534 | & ~0xFF; | |
1535 | } | |
1536 | ||
1537 | if (bytes_sent > count) | |
1538 | bytes_sent = count; | |
1539 | pSMB->DataOffset = | |
50c2f753 | 1540 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1541 | if (buf) |
61e74801 | 1542 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1543 | else if (ubuf) { |
1544 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1545 | cifs_buf_release(pSMB); |
1546 | return -EFAULT; | |
1547 | } | |
e30dcf3a | 1548 | } else if (count != 0) { |
1da177e4 LT |
1549 | /* No buffer */ |
1550 | cifs_buf_release(pSMB); | |
1551 | return -EINVAL; | |
e30dcf3a | 1552 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1553 | if (wct == 14) |
e30dcf3a | 1554 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1555 | else /* wct == 12 */ |
e30dcf3a | 1556 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1557 | |
1da177e4 LT |
1558 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1559 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1560 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1561 | |
790fe579 | 1562 | if (wct == 14) |
1c955187 | 1563 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1564 | else { /* old style write has byte count 4 bytes earlier |
1565 | so 4 bytes pad */ | |
1566 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1567 | (struct smb_com_writex_req *)pSMB; |
1568 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1569 | } | |
1da177e4 LT |
1570 | |
1571 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1572 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1573 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1574 | if (rc) { |
f19159dc | 1575 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1576 | } else { |
1577 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1578 | *nbytes = (*nbytes) << 16; | |
1579 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1580 | |
1581 | /* | |
1582 | * Mask off high 16 bits when bytes written as returned by the | |
1583 | * server is greater than bytes requested by the client. Some | |
1584 | * OS/2 servers are known to set incorrect CountHigh values. | |
1585 | */ | |
1586 | if (*nbytes > count) | |
1587 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1588 | } |
1589 | ||
1590 | cifs_buf_release(pSMB); | |
1591 | ||
50c2f753 | 1592 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1593 | since file handle passed in no longer valid */ |
1594 | ||
1595 | return rc; | |
1596 | } | |
1597 | ||
d6e04ae6 SF |
1598 | int |
1599 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1600 | const int netfid, const unsigned int count, |
3e84469d SF |
1601 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1602 | int n_vec, const int long_op) | |
1da177e4 LT |
1603 | { |
1604 | int rc = -EACCES; | |
1605 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1606 | int wct; |
d6e04ae6 | 1607 | int smb_hdr_len; |
ec637e3f | 1608 | int resp_buf_type = 0; |
1da177e4 | 1609 | |
fbec9ab9 JL |
1610 | *nbytes = 0; |
1611 | ||
b6b38f70 | 1612 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 1613 | |
4c3130ef | 1614 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1615 | wct = 14; |
4c3130ef | 1616 | } else { |
8cc64c6e | 1617 | wct = 12; |
4c3130ef SF |
1618 | if ((offset >> 32) > 0) { |
1619 | /* can not handle big offset for old srv */ | |
1620 | return -EIO; | |
1621 | } | |
1622 | } | |
8cc64c6e | 1623 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1624 | if (rc) |
1625 | return rc; | |
1da177e4 LT |
1626 | /* tcon and ses pointer are checked in smb_init */ |
1627 | if (tcon->ses->server == NULL) | |
1628 | return -ECONNABORTED; | |
1629 | ||
d6e04ae6 | 1630 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1631 | pSMB->Fid = netfid; |
1632 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1633 | if (wct == 14) |
8cc64c6e | 1634 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1635 | pSMB->Reserved = 0xFFFFFFFF; |
1636 | pSMB->WriteMode = 0; | |
1637 | pSMB->Remaining = 0; | |
d6e04ae6 | 1638 | |
1da177e4 | 1639 | pSMB->DataOffset = |
50c2f753 | 1640 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1641 | |
3e84469d SF |
1642 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1643 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1644 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1645 | if (wct == 14) |
8cc64c6e SF |
1646 | pSMB->hdr.smb_buf_length += count+1; |
1647 | else /* wct == 12 */ | |
790fe579 SF |
1648 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1649 | if (wct == 14) | |
8cc64c6e SF |
1650 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1651 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1652 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1653 | (struct smb_com_writex_req *)pSMB; |
1654 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1655 | } | |
3e84469d | 1656 | iov[0].iov_base = pSMB; |
790fe579 | 1657 | if (wct == 14) |
ec637e3f SF |
1658 | iov[0].iov_len = smb_hdr_len + 4; |
1659 | else /* wct == 12 pad bigger by four bytes */ | |
1660 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1661 | |
1da177e4 | 1662 | |
ec637e3f | 1663 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1664 | long_op); |
a4544347 | 1665 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1666 | if (rc) { |
b6b38f70 | 1667 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 1668 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1669 | /* presumably this can not happen, but best to be safe */ |
1670 | rc = -EIO; | |
d6e04ae6 | 1671 | } else { |
ad7a2926 | 1672 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1673 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1674 | *nbytes = (*nbytes) << 16; | |
1675 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1676 | |
1677 | /* | |
1678 | * Mask off high 16 bits when bytes written as returned by the | |
1679 | * server is greater than bytes requested by the client. OS/2 | |
1680 | * servers are known to set incorrect CountHigh values. | |
1681 | */ | |
1682 | if (*nbytes > count) | |
1683 | *nbytes &= 0xFFFF; | |
50c2f753 | 1684 | } |
1da177e4 | 1685 | |
4b8f930f | 1686 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1687 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1688 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1689 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1690 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1691 | |
50c2f753 | 1692 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1693 | since file handle passed in no longer valid */ |
1694 | ||
1695 | return rc; | |
1696 | } | |
d6e04ae6 SF |
1697 | |
1698 | ||
1da177e4 LT |
1699 | int |
1700 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1701 | const __u16 smb_file_id, const __u64 len, | |
1702 | const __u64 offset, const __u32 numUnlock, | |
12fed00d PS |
1703 | const __u32 numLock, const __u8 lockType, |
1704 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1705 | { |
1706 | int rc = 0; | |
1707 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1708 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1709 | int bytes_returned; |
1710 | int timeout = 0; | |
1711 | __u16 count; | |
1712 | ||
b6b38f70 | 1713 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
1714 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1715 | ||
1da177e4 LT |
1716 | if (rc) |
1717 | return rc; | |
1718 | ||
790fe579 | 1719 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1720 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1721 | pSMB->Timeout = 0; |
4b18f2a9 | 1722 | } else if (waitFlag) { |
133672ef | 1723 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1724 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1725 | } else { | |
1726 | pSMB->Timeout = 0; | |
1727 | } | |
1728 | ||
1729 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1730 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1731 | pSMB->LockType = lockType; | |
12fed00d | 1732 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1733 | pSMB->AndXCommand = 0xFF; /* none */ |
1734 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1735 | ||
790fe579 | 1736 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1737 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1738 | /* BB where to store pid high? */ | |
1739 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1740 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1741 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1742 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1743 | count = sizeof(LOCKING_ANDX_RANGE); | |
1744 | } else { | |
1745 | /* oplock break */ | |
1746 | count = 0; | |
1747 | } | |
1748 | pSMB->hdr.smb_buf_length += count; | |
1749 | pSMB->ByteCount = cpu_to_le16(count); | |
1750 | ||
7ee1af76 JA |
1751 | if (waitFlag) { |
1752 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1753 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1754 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1755 | } else { |
133672ef SF |
1756 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1757 | timeout); | |
1758 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1759 | } |
a4544347 | 1760 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1761 | if (rc) |
b6b38f70 | 1762 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 1763 | |
50c2f753 | 1764 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1765 | since file handle passed in no longer valid */ |
1766 | return rc; | |
1767 | } | |
1768 | ||
08547b03 SF |
1769 | int |
1770 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1771 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1772 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1773 | const bool waitFlag) |
08547b03 SF |
1774 | { |
1775 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1776 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1777 | struct cifs_posix_lock *parm_data; |
1778 | int rc = 0; | |
3a5ff61c | 1779 | int timeout = 0; |
08547b03 | 1780 | int bytes_returned = 0; |
133672ef | 1781 | int resp_buf_type = 0; |
08547b03 | 1782 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1783 | struct kvec iov[1]; |
08547b03 | 1784 | |
b6b38f70 | 1785 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 1786 | |
790fe579 | 1787 | if (pLockData == NULL) |
ed5f0370 | 1788 | return -EINVAL; |
fc94cdb9 | 1789 | |
08547b03 SF |
1790 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1791 | ||
1792 | if (rc) | |
1793 | return rc; | |
1794 | ||
1795 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1796 | ||
50c2f753 | 1797 | params = 6; |
08547b03 SF |
1798 | pSMB->MaxSetupCount = 0; |
1799 | pSMB->Reserved = 0; | |
1800 | pSMB->Flags = 0; | |
08547b03 SF |
1801 | pSMB->Reserved2 = 0; |
1802 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1803 | offset = param_offset + params; | |
1804 | ||
08547b03 SF |
1805 | count = sizeof(struct cifs_posix_lock); |
1806 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1807 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1808 | pSMB->SetupCount = 1; |
1809 | pSMB->Reserved3 = 0; | |
790fe579 | 1810 | if (get_flag) |
08547b03 SF |
1811 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1812 | else | |
1813 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1814 | byte_count = 3 /* pad */ + params + count; | |
1815 | pSMB->DataCount = cpu_to_le16(count); | |
1816 | pSMB->ParameterCount = cpu_to_le16(params); | |
1817 | pSMB->TotalDataCount = pSMB->DataCount; | |
1818 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1819 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1820 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1821 | (((char *) &pSMB->hdr.Protocol) + offset); |
1822 | ||
1823 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1824 | if (waitFlag) { |
133672ef | 1825 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1826 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1827 | pSMB->Timeout = cpu_to_le32(-1); |
1828 | } else | |
1829 | pSMB->Timeout = 0; | |
1830 | ||
08547b03 | 1831 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1832 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1833 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1834 | |
1835 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1836 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1837 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1838 | pSMB->Reserved4 = 0; | |
1839 | pSMB->hdr.smb_buf_length += byte_count; | |
1840 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1841 | if (waitFlag) { |
1842 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1843 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1844 | } else { | |
133672ef SF |
1845 | iov[0].iov_base = (char *)pSMB; |
1846 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1847 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1848 | &resp_buf_type, timeout); | |
1849 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1850 | not try to free it twice below on exit */ | |
1851 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1852 | } |
1853 | ||
08547b03 | 1854 | if (rc) { |
b6b38f70 | 1855 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
1856 | } else if (get_flag) { |
1857 | /* lock structure can be returned on get */ | |
1858 | __u16 data_offset; | |
1859 | __u16 data_count; | |
1860 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1861 | ||
1862 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1863 | rc = -EIO; /* bad smb */ | |
1864 | goto plk_err_exit; | |
1865 | } | |
fc94cdb9 SF |
1866 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1867 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1868 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1869 | rc = -EIO; |
1870 | goto plk_err_exit; | |
1871 | } | |
1872 | parm_data = (struct cifs_posix_lock *) | |
1873 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 1874 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1875 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
1876 | else { |
1877 | if (parm_data->lock_type == | |
1878 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
1879 | pLockData->fl_type = F_RDLCK; | |
1880 | else if (parm_data->lock_type == | |
1881 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
1882 | pLockData->fl_type = F_WRLCK; | |
1883 | ||
5443d130 SF |
1884 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
1885 | pLockData->fl_end = pLockData->fl_start + | |
1886 | le64_to_cpu(parm_data->length) - 1; | |
1887 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 1888 | } |
08547b03 | 1889 | } |
50c2f753 | 1890 | |
fc94cdb9 | 1891 | plk_err_exit: |
08547b03 SF |
1892 | if (pSMB) |
1893 | cifs_small_buf_release(pSMB); | |
1894 | ||
133672ef SF |
1895 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1896 | cifs_small_buf_release(iov[0].iov_base); | |
1897 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1898 | cifs_buf_release(iov[0].iov_base); | |
1899 | ||
08547b03 SF |
1900 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1901 | since file handle passed in no longer valid */ | |
1902 | ||
1903 | return rc; | |
1904 | } | |
1905 | ||
1906 | ||
1da177e4 LT |
1907 | int |
1908 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1909 | { | |
1910 | int rc = 0; | |
1911 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 1912 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
1913 | |
1914 | /* do not retry on dead session on close */ | |
1915 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1916 | if (rc == -EAGAIN) |
1da177e4 LT |
1917 | return 0; |
1918 | if (rc) | |
1919 | return rc; | |
1920 | ||
1da177e4 | 1921 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1922 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1923 | pSMB->ByteCount = 0; |
133672ef | 1924 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1925 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1926 | if (rc) { |
790fe579 | 1927 | if (rc != -EINTR) { |
1da177e4 | 1928 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 1929 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
1930 | } |
1931 | } | |
1932 | ||
1da177e4 | 1933 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1934 | if (rc == -EAGAIN) |
1da177e4 LT |
1935 | rc = 0; |
1936 | ||
1937 | return rc; | |
1938 | } | |
1939 | ||
b298f223 SF |
1940 | int |
1941 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1942 | { | |
1943 | int rc = 0; | |
1944 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 1945 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
1946 | |
1947 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
1948 | if (rc) | |
1949 | return rc; | |
1950 | ||
1951 | pSMB->FileID = (__u16) smb_file_id; | |
1952 | pSMB->ByteCount = 0; | |
1953 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1954 | cifs_stats_inc(&tcon->num_flushes); | |
1955 | if (rc) | |
b6b38f70 | 1956 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
1957 | |
1958 | return rc; | |
1959 | } | |
1960 | ||
1da177e4 LT |
1961 | int |
1962 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1963 | const char *fromName, const char *toName, | |
737b758c | 1964 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1965 | { |
1966 | int rc = 0; | |
1967 | RENAME_REQ *pSMB = NULL; | |
1968 | RENAME_RSP *pSMBr = NULL; | |
1969 | int bytes_returned; | |
1970 | int name_len, name_len2; | |
1971 | __u16 count; | |
1972 | ||
b6b38f70 | 1973 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
1974 | renameRetry: |
1975 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1976 | (void **) &pSMBr); | |
1977 | if (rc) | |
1978 | return rc; | |
1979 | ||
1980 | pSMB->BufferFormat = 0x04; | |
1981 | pSMB->SearchAttributes = | |
1982 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1983 | ATTR_DIRECTORY); | |
1984 | ||
1985 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1986 | name_len = | |
50c2f753 | 1987 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1988 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1989 | name_len++; /* trailing null */ |
1990 | name_len *= 2; | |
1991 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1992 | /* protocol requires ASCII signature byte on Unicode string */ | |
1993 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1994 | name_len2 = | |
582d21e5 | 1995 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1996 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1997 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1998 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 1999 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2000 | name_len = strnlen(fromName, PATH_MAX); |
2001 | name_len++; /* trailing null */ | |
2002 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2003 | name_len2 = strnlen(toName, PATH_MAX); | |
2004 | name_len2++; /* trailing null */ | |
2005 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2006 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2007 | name_len2++; /* trailing null */ | |
2008 | name_len2++; /* signature byte */ | |
2009 | } | |
2010 | ||
2011 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2012 | pSMB->hdr.smb_buf_length += count; | |
2013 | pSMB->ByteCount = cpu_to_le16(count); | |
2014 | ||
2015 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2016 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2017 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2018 | if (rc) |
b6b38f70 | 2019 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2020 | |
1da177e4 LT |
2021 | cifs_buf_release(pSMB); |
2022 | ||
2023 | if (rc == -EAGAIN) | |
2024 | goto renameRetry; | |
2025 | ||
2026 | return rc; | |
2027 | } | |
2028 | ||
50c2f753 | 2029 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 2030 | int netfid, const char *target_name, |
50c2f753 | 2031 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2032 | { |
2033 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2034 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2035 | struct set_file_rename *rename_info; |
1da177e4 LT |
2036 | char *data_offset; |
2037 | char dummy_string[30]; | |
2038 | int rc = 0; | |
2039 | int bytes_returned = 0; | |
2040 | int len_of_str; | |
2041 | __u16 params, param_offset, offset, count, byte_count; | |
2042 | ||
b6b38f70 | 2043 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2044 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2045 | (void **) &pSMBr); | |
2046 | if (rc) | |
2047 | return rc; | |
2048 | ||
2049 | params = 6; | |
2050 | pSMB->MaxSetupCount = 0; | |
2051 | pSMB->Reserved = 0; | |
2052 | pSMB->Flags = 0; | |
2053 | pSMB->Timeout = 0; | |
2054 | pSMB->Reserved2 = 0; | |
2055 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2056 | offset = param_offset + params; | |
2057 | ||
2058 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2059 | rename_info = (struct set_file_rename *) data_offset; | |
2060 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2061 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2062 | pSMB->SetupCount = 1; |
2063 | pSMB->Reserved3 = 0; | |
2064 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2065 | byte_count = 3 /* pad */ + params; | |
2066 | pSMB->ParameterCount = cpu_to_le16(params); | |
2067 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2068 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2069 | pSMB->DataOffset = cpu_to_le16(offset); | |
2070 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2071 | rename_info->overwrite = cpu_to_le32(1); | |
2072 | rename_info->root_fid = 0; | |
2073 | /* unicode only call */ | |
790fe579 | 2074 | if (target_name == NULL) { |
50c2f753 SF |
2075 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2076 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2077 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2078 | } else { |
b1a45695 | 2079 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2080 | target_name, PATH_MAX, nls_codepage, |
2081 | remap); | |
1da177e4 LT |
2082 | } |
2083 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2084 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2085 | byte_count += count; |
2086 | pSMB->DataCount = cpu_to_le16(count); | |
2087 | pSMB->TotalDataCount = pSMB->DataCount; | |
2088 | pSMB->Fid = netfid; | |
2089 | pSMB->InformationLevel = | |
2090 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2091 | pSMB->Reserved4 = 0; | |
2092 | pSMB->hdr.smb_buf_length += byte_count; | |
2093 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2094 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2095 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2096 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2097 | if (rc) |
b6b38f70 | 2098 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2099 | |
1da177e4 LT |
2100 | cifs_buf_release(pSMB); |
2101 | ||
2102 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2103 | since file handle passed in no longer valid */ | |
2104 | ||
2105 | return rc; | |
2106 | } | |
2107 | ||
2108 | int | |
50c2f753 SF |
2109 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2110 | const __u16 target_tid, const char *toName, const int flags, | |
2111 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2112 | { |
2113 | int rc = 0; | |
2114 | COPY_REQ *pSMB = NULL; | |
2115 | COPY_RSP *pSMBr = NULL; | |
2116 | int bytes_returned; | |
2117 | int name_len, name_len2; | |
2118 | __u16 count; | |
2119 | ||
b6b38f70 | 2120 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2121 | copyRetry: |
2122 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2123 | (void **) &pSMBr); | |
2124 | if (rc) | |
2125 | return rc; | |
2126 | ||
2127 | pSMB->BufferFormat = 0x04; | |
2128 | pSMB->Tid2 = target_tid; | |
2129 | ||
2130 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2131 | ||
2132 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2133 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2134 | fromName, PATH_MAX, nls_codepage, |
2135 | remap); | |
1da177e4 LT |
2136 | name_len++; /* trailing null */ |
2137 | name_len *= 2; | |
2138 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2139 | /* protocol requires ASCII signature byte on Unicode string */ | |
2140 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2141 | name_len2 = |
2142 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2143 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2144 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2145 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2146 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2147 | name_len = strnlen(fromName, PATH_MAX); |
2148 | name_len++; /* trailing null */ | |
2149 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2150 | name_len2 = strnlen(toName, PATH_MAX); | |
2151 | name_len2++; /* trailing null */ | |
2152 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2153 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2154 | name_len2++; /* trailing null */ | |
2155 | name_len2++; /* signature byte */ | |
2156 | } | |
2157 | ||
2158 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2159 | pSMB->hdr.smb_buf_length += count; | |
2160 | pSMB->ByteCount = cpu_to_le16(count); | |
2161 | ||
2162 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2163 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2164 | if (rc) { | |
b6b38f70 JP |
2165 | cFYI(1, "Send error in copy = %d with %d files copied", |
2166 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2167 | } |
0d817bc0 | 2168 | cifs_buf_release(pSMB); |
1da177e4 LT |
2169 | |
2170 | if (rc == -EAGAIN) | |
2171 | goto copyRetry; | |
2172 | ||
2173 | return rc; | |
2174 | } | |
2175 | ||
2176 | int | |
2177 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2178 | const char *fromName, const char *toName, | |
2179 | const struct nls_table *nls_codepage) | |
2180 | { | |
2181 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2182 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2183 | char *data_offset; | |
2184 | int name_len; | |
2185 | int name_len_target; | |
2186 | int rc = 0; | |
2187 | int bytes_returned = 0; | |
2188 | __u16 params, param_offset, offset, byte_count; | |
2189 | ||
b6b38f70 | 2190 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2191 | createSymLinkRetry: |
2192 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2193 | (void **) &pSMBr); | |
2194 | if (rc) | |
2195 | return rc; | |
2196 | ||
2197 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2198 | name_len = | |
e89dc920 | 2199 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2200 | /* find define for this maxpathcomponent */ |
2201 | , nls_codepage); | |
2202 | name_len++; /* trailing null */ | |
2203 | name_len *= 2; | |
2204 | ||
50c2f753 | 2205 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2206 | name_len = strnlen(fromName, PATH_MAX); |
2207 | name_len++; /* trailing null */ | |
2208 | strncpy(pSMB->FileName, fromName, name_len); | |
2209 | } | |
2210 | params = 6 + name_len; | |
2211 | pSMB->MaxSetupCount = 0; | |
2212 | pSMB->Reserved = 0; | |
2213 | pSMB->Flags = 0; | |
2214 | pSMB->Timeout = 0; | |
2215 | pSMB->Reserved2 = 0; | |
2216 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2217 | InformationLevel) - 4; |
1da177e4 LT |
2218 | offset = param_offset + params; |
2219 | ||
2220 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2221 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2222 | name_len_target = | |
e89dc920 | 2223 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2224 | /* find define for this maxpathcomponent */ |
2225 | , nls_codepage); | |
2226 | name_len_target++; /* trailing null */ | |
2227 | name_len_target *= 2; | |
50c2f753 | 2228 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2229 | name_len_target = strnlen(toName, PATH_MAX); |
2230 | name_len_target++; /* trailing null */ | |
2231 | strncpy(data_offset, toName, name_len_target); | |
2232 | } | |
2233 | ||
2234 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2235 | /* BB find exact max on data count below from sess */ | |
2236 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2237 | pSMB->SetupCount = 1; | |
2238 | pSMB->Reserved3 = 0; | |
2239 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2240 | byte_count = 3 /* pad */ + params + name_len_target; | |
2241 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2242 | pSMB->ParameterCount = cpu_to_le16(params); | |
2243 | pSMB->TotalDataCount = pSMB->DataCount; | |
2244 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2245 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2246 | pSMB->DataOffset = cpu_to_le16(offset); | |
2247 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2248 | pSMB->Reserved4 = 0; | |
2249 | pSMB->hdr.smb_buf_length += byte_count; | |
2250 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2251 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2252 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2253 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2254 | if (rc) |
b6b38f70 | 2255 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2256 | |
0d817bc0 | 2257 | cifs_buf_release(pSMB); |
1da177e4 LT |
2258 | |
2259 | if (rc == -EAGAIN) | |
2260 | goto createSymLinkRetry; | |
2261 | ||
2262 | return rc; | |
2263 | } | |
2264 | ||
2265 | int | |
2266 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2267 | const char *fromName, const char *toName, | |
737b758c | 2268 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2269 | { |
2270 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2271 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2272 | char *data_offset; | |
2273 | int name_len; | |
2274 | int name_len_target; | |
2275 | int rc = 0; | |
2276 | int bytes_returned = 0; | |
2277 | __u16 params, param_offset, offset, byte_count; | |
2278 | ||
b6b38f70 | 2279 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2280 | createHardLinkRetry: |
2281 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2282 | (void **) &pSMBr); | |
2283 | if (rc) | |
2284 | return rc; | |
2285 | ||
2286 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2287 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2288 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2289 | name_len++; /* trailing null */ |
2290 | name_len *= 2; | |
2291 | ||
50c2f753 | 2292 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2293 | name_len = strnlen(toName, PATH_MAX); |
2294 | name_len++; /* trailing null */ | |
2295 | strncpy(pSMB->FileName, toName, name_len); | |
2296 | } | |
2297 | params = 6 + name_len; | |
2298 | pSMB->MaxSetupCount = 0; | |
2299 | pSMB->Reserved = 0; | |
2300 | pSMB->Flags = 0; | |
2301 | pSMB->Timeout = 0; | |
2302 | pSMB->Reserved2 = 0; | |
2303 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2304 | InformationLevel) - 4; |
1da177e4 LT |
2305 | offset = param_offset + params; |
2306 | ||
2307 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2308 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2309 | name_len_target = | |
b1a45695 | 2310 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2311 | nls_codepage, remap); |
1da177e4 LT |
2312 | name_len_target++; /* trailing null */ |
2313 | name_len_target *= 2; | |
50c2f753 | 2314 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2315 | name_len_target = strnlen(fromName, PATH_MAX); |
2316 | name_len_target++; /* trailing null */ | |
2317 | strncpy(data_offset, fromName, name_len_target); | |
2318 | } | |
2319 | ||
2320 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2321 | /* BB find exact max on data count below from sess*/ | |
2322 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2323 | pSMB->SetupCount = 1; | |
2324 | pSMB->Reserved3 = 0; | |
2325 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2326 | byte_count = 3 /* pad */ + params + name_len_target; | |
2327 | pSMB->ParameterCount = cpu_to_le16(params); | |
2328 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2329 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2330 | pSMB->TotalDataCount = pSMB->DataCount; | |
2331 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2332 | pSMB->DataOffset = cpu_to_le16(offset); | |
2333 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2334 | pSMB->Reserved4 = 0; | |
2335 | pSMB->hdr.smb_buf_length += byte_count; | |
2336 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2337 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2338 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2339 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2340 | if (rc) |
b6b38f70 | 2341 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2342 | |
2343 | cifs_buf_release(pSMB); | |
2344 | if (rc == -EAGAIN) | |
2345 | goto createHardLinkRetry; | |
2346 | ||
2347 | return rc; | |
2348 | } | |
2349 | ||
2350 | int | |
2351 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2352 | const char *fromName, const char *toName, | |
737b758c | 2353 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2354 | { |
2355 | int rc = 0; | |
2356 | NT_RENAME_REQ *pSMB = NULL; | |
2357 | RENAME_RSP *pSMBr = NULL; | |
2358 | int bytes_returned; | |
2359 | int name_len, name_len2; | |
2360 | __u16 count; | |
2361 | ||
b6b38f70 | 2362 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2363 | winCreateHardLinkRetry: |
2364 | ||
2365 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2366 | (void **) &pSMBr); | |
2367 | if (rc) | |
2368 | return rc; | |
2369 | ||
2370 | pSMB->SearchAttributes = | |
2371 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2372 | ATTR_DIRECTORY); | |
2373 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2374 | pSMB->ClusterCount = 0; | |
2375 | ||
2376 | pSMB->BufferFormat = 0x04; | |
2377 | ||
2378 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2379 | name_len = | |
b1a45695 | 2380 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2381 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2382 | name_len++; /* trailing null */ |
2383 | name_len *= 2; | |
fcc7c09d JL |
2384 | |
2385 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2386 | pSMB->OldFileName[name_len] = 0x04; | |
2387 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2388 | name_len2 = |
50c2f753 | 2389 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2390 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2391 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2392 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2393 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2394 | name_len = strnlen(fromName, PATH_MAX); |
2395 | name_len++; /* trailing null */ | |
2396 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2397 | name_len2 = strnlen(toName, PATH_MAX); | |
2398 | name_len2++; /* trailing null */ | |
2399 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2400 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2401 | name_len2++; /* trailing null */ | |
2402 | name_len2++; /* signature byte */ | |
2403 | } | |
2404 | ||
2405 | count = 1 /* string type byte */ + name_len + name_len2; | |
2406 | pSMB->hdr.smb_buf_length += count; | |
2407 | pSMB->ByteCount = cpu_to_le16(count); | |
2408 | ||
2409 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2410 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2411 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2412 | if (rc) |
b6b38f70 | 2413 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2414 | |
1da177e4 LT |
2415 | cifs_buf_release(pSMB); |
2416 | if (rc == -EAGAIN) | |
2417 | goto winCreateHardLinkRetry; | |
2418 | ||
2419 | return rc; | |
2420 | } | |
2421 | ||
2422 | int | |
2423 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2424 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2425 | const struct nls_table *nls_codepage) |
2426 | { | |
2427 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2428 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2429 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2430 | int rc = 0; | |
2431 | int bytes_returned; | |
2432 | int name_len; | |
2433 | __u16 params, byte_count; | |
460b9696 | 2434 | char *data_start; |
1da177e4 | 2435 | |
b6b38f70 | 2436 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2437 | |
2438 | querySymLinkRetry: | |
2439 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2440 | (void **) &pSMBr); | |
2441 | if (rc) | |
2442 | return rc; | |
2443 | ||
2444 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2445 | name_len = | |
50c2f753 SF |
2446 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2447 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2448 | name_len++; /* trailing null */ |
2449 | name_len *= 2; | |
50c2f753 | 2450 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2451 | name_len = strnlen(searchName, PATH_MAX); |
2452 | name_len++; /* trailing null */ | |
2453 | strncpy(pSMB->FileName, searchName, name_len); | |
2454 | } | |
2455 | ||
2456 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2457 | pSMB->TotalDataCount = 0; | |
2458 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2459 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2460 | pSMB->MaxSetupCount = 0; |
2461 | pSMB->Reserved = 0; | |
2462 | pSMB->Flags = 0; | |
2463 | pSMB->Timeout = 0; | |
2464 | pSMB->Reserved2 = 0; | |
2465 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2466 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2467 | pSMB->DataCount = 0; |
2468 | pSMB->DataOffset = 0; | |
2469 | pSMB->SetupCount = 1; | |
2470 | pSMB->Reserved3 = 0; | |
2471 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2472 | byte_count = params + 1 /* pad */ ; | |
2473 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2474 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2475 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2476 | pSMB->Reserved4 = 0; | |
2477 | pSMB->hdr.smb_buf_length += byte_count; | |
2478 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2479 | ||
2480 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2481 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2482 | if (rc) { | |
b6b38f70 | 2483 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
2484 | } else { |
2485 | /* decode response */ | |
2486 | ||
2487 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2488 | /* BB also check enough total bytes returned */ |
460b9696 JL |
2489 | if (rc || (pSMBr->ByteCount < 2)) |
2490 | rc = -EIO; | |
1da177e4 | 2491 | else { |
0e0d2cf3 | 2492 | bool is_unicode; |
460b9696 JL |
2493 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2494 | ||
2495 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2496 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2497 | |
0e0d2cf3 SF |
2498 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2499 | is_unicode = true; | |
2500 | else | |
2501 | is_unicode = false; | |
2502 | ||
737b758c | 2503 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2504 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2505 | is_unicode, nls_codepage); |
8b6427a2 | 2506 | if (!*symlinkinfo) |
460b9696 | 2507 | rc = -ENOMEM; |
1da177e4 LT |
2508 | } |
2509 | } | |
2510 | cifs_buf_release(pSMB); | |
2511 | if (rc == -EAGAIN) | |
2512 | goto querySymLinkRetry; | |
2513 | return rc; | |
2514 | } | |
2515 | ||
c52a9554 SF |
2516 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
2517 | /* | |
2518 | * Recent Windows versions now create symlinks more frequently | |
2519 | * and they use the "reparse point" mechanism below. We can of course | |
2520 | * do symlinks nicely to Samba and other servers which support the | |
2521 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2522 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2523 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2524 | * In the interim this code has been moved to its own config option so | |
2525 | * it is not compiled in by default until callers fixed up and more tested. | |
2526 | */ | |
1da177e4 LT |
2527 | int |
2528 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2529 | const unsigned char *searchName, | |
50c2f753 | 2530 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2531 | const struct nls_table *nls_codepage) |
2532 | { | |
2533 | int rc = 0; | |
2534 | int bytes_returned; | |
50c2f753 SF |
2535 | struct smb_com_transaction_ioctl_req *pSMB; |
2536 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 2537 | |
b6b38f70 | 2538 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
2539 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2540 | (void **) &pSMBr); | |
2541 | if (rc) | |
2542 | return rc; | |
2543 | ||
2544 | pSMB->TotalParameterCount = 0 ; | |
2545 | pSMB->TotalDataCount = 0; | |
2546 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2547 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2548 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2549 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2550 | pSMB->MaxSetupCount = 4; |
2551 | pSMB->Reserved = 0; | |
2552 | pSMB->ParameterOffset = 0; | |
2553 | pSMB->DataCount = 0; | |
2554 | pSMB->DataOffset = 0; | |
2555 | pSMB->SetupCount = 4; | |
2556 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2557 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2558 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2559 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2560 | pSMB->IsRootFlag = 0; | |
2561 | pSMB->Fid = fid; /* file handle always le */ | |
2562 | pSMB->ByteCount = 0; | |
2563 | ||
2564 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2565 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2566 | if (rc) { | |
b6b38f70 | 2567 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
2568 | } else { /* decode response */ |
2569 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2570 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
afe48c31 | 2571 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) { |
1da177e4 LT |
2572 | /* BB also check enough total bytes returned */ |
2573 | rc = -EIO; /* bad smb */ | |
afe48c31 SF |
2574 | goto qreparse_out; |
2575 | } | |
2576 | if (data_count && (data_count < 2048)) { | |
2577 | char *end_of_smb = 2 /* sizeof byte count */ + | |
2578 | pSMBr->ByteCount + (char *)&pSMBr->ByteCount; | |
1da177e4 | 2579 | |
afe48c31 | 2580 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2581 | (struct reparse_data *) |
2582 | ((char *)&pSMBr->hdr.Protocol | |
2583 | + data_offset); | |
afe48c31 SF |
2584 | if ((char *)reparse_buf >= end_of_smb) { |
2585 | rc = -EIO; | |
2586 | goto qreparse_out; | |
2587 | } | |
2588 | if ((reparse_buf->LinkNamesBuf + | |
2589 | reparse_buf->TargetNameOffset + | |
2590 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 2591 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
2592 | rc = -EIO; |
2593 | goto qreparse_out; | |
2594 | } | |
50c2f753 | 2595 | |
afe48c31 SF |
2596 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2597 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2598 | (reparse_buf->LinkNamesBuf + |
2599 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2600 | buflen, |
2601 | reparse_buf->TargetNameLen, | |
2602 | nls_codepage, 0); | |
2603 | } else { /* ASCII names */ | |
2604 | strncpy(symlinkinfo, | |
2605 | reparse_buf->LinkNamesBuf + | |
2606 | reparse_buf->TargetNameOffset, | |
2607 | min_t(const int, buflen, | |
2608 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2609 | } |
afe48c31 SF |
2610 | } else { |
2611 | rc = -EIO; | |
b6b38f70 JP |
2612 | cFYI(1, "Invalid return data count on " |
2613 | "get reparse info ioctl"); | |
1da177e4 | 2614 | } |
afe48c31 SF |
2615 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2616 | does not go off the end of the buffer */ | |
b6b38f70 | 2617 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 2618 | } |
989c7e51 | 2619 | |
1da177e4 | 2620 | qreparse_out: |
4a6d87f1 | 2621 | cifs_buf_release(pSMB); |
1da177e4 LT |
2622 | |
2623 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2624 | since file handle passed in no longer valid */ | |
2625 | ||
2626 | return rc; | |
2627 | } | |
c52a9554 | 2628 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
2629 | |
2630 | #ifdef CONFIG_CIFS_POSIX | |
2631 | ||
2632 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2633 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2634 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2635 | { |
2636 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2637 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2638 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2639 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 2640 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
2641 | |
2642 | return; | |
2643 | } | |
2644 | ||
2645 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2646 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2647 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2648 | { |
2649 | int size = 0; | |
2650 | int i; | |
2651 | __u16 count; | |
50c2f753 SF |
2652 | struct cifs_posix_ace *pACE; |
2653 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2654 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2655 | |
2656 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2657 | return -EOPNOTSUPP; | |
2658 | ||
790fe579 | 2659 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2660 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2661 | pACE = &cifs_acl->ace_array[0]; | |
2662 | size = sizeof(struct cifs_posix_acl); | |
2663 | size += sizeof(struct cifs_posix_ace) * count; | |
2664 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2665 | if (size_of_data_area < size) { |
b6b38f70 JP |
2666 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
2667 | size_of_data_area, size); | |
1da177e4 LT |
2668 | return -EINVAL; |
2669 | } | |
790fe579 | 2670 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2671 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2672 | size = sizeof(struct cifs_posix_acl); | |
2673 | size += sizeof(struct cifs_posix_ace) * count; | |
2674 | /* skip past access ACEs to get to default ACEs */ | |
2675 | pACE = &cifs_acl->ace_array[count]; | |
2676 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2677 | size += sizeof(struct cifs_posix_ace) * count; | |
2678 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2679 | if (size_of_data_area < size) |
1da177e4 LT |
2680 | return -EINVAL; |
2681 | } else { | |
2682 | /* illegal type */ | |
2683 | return -EINVAL; | |
2684 | } | |
2685 | ||
2686 | size = posix_acl_xattr_size(count); | |
790fe579 | 2687 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2688 | /* used to query ACL EA size */ |
790fe579 | 2689 | } else if (size > buflen) { |
1da177e4 LT |
2690 | return -ERANGE; |
2691 | } else /* buffer big enough */ { | |
ff7feac9 | 2692 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2693 | for (i = 0; i < count ; i++) { |
2694 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2695 | pACE++; | |
1da177e4 LT |
2696 | } |
2697 | } | |
2698 | return size; | |
2699 | } | |
2700 | ||
50c2f753 SF |
2701 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2702 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2703 | { |
2704 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2705 | ||
ff7feac9 SF |
2706 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2707 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2708 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2709 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2710 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2711 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2712 | } else |
ff7feac9 | 2713 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 2714 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
2715 | return rc; |
2716 | } | |
2717 | ||
2718 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2719 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2720 | const int buflen, const int acl_type) | |
1da177e4 LT |
2721 | { |
2722 | __u16 rc = 0; | |
50c2f753 SF |
2723 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2724 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2725 | int count; |
2726 | int i; | |
2727 | ||
790fe579 | 2728 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2729 | return 0; |
2730 | ||
2731 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 2732 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 2733 | "version of %d", |
b6b38f70 | 2734 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 2735 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
2736 | cFYI(1, "unknown POSIX ACL version %d", |
2737 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
2738 | return 0; |
2739 | } | |
2740 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2741 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2742 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2743 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2744 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2745 | else { |
b6b38f70 | 2746 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
2747 | return 0; |
2748 | } | |
50c2f753 | 2749 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2750 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2751 | &local_acl->a_entries[i]); | |
790fe579 | 2752 | if (rc != 0) { |
1da177e4 LT |
2753 | /* ACE not converted */ |
2754 | break; | |
2755 | } | |
2756 | } | |
790fe579 | 2757 | if (rc == 0) { |
1da177e4 LT |
2758 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2759 | rc += sizeof(struct cifs_posix_acl); | |
2760 | /* BB add check to make sure ACL does not overflow SMB */ | |
2761 | } | |
2762 | return rc; | |
2763 | } | |
2764 | ||
2765 | int | |
2766 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2767 | const unsigned char *searchName, |
2768 | char *acl_inf, const int buflen, const int acl_type, | |
2769 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2770 | { |
2771 | /* SMB_QUERY_POSIX_ACL */ | |
2772 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2773 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2774 | int rc = 0; | |
2775 | int bytes_returned; | |
2776 | int name_len; | |
2777 | __u16 params, byte_count; | |
50c2f753 | 2778 | |
b6b38f70 | 2779 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
2780 | |
2781 | queryAclRetry: | |
2782 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2783 | (void **) &pSMBr); | |
2784 | if (rc) | |
2785 | return rc; | |
50c2f753 | 2786 | |
1da177e4 LT |
2787 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2788 | name_len = | |
50c2f753 | 2789 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2790 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2791 | name_len++; /* trailing null */ |
2792 | name_len *= 2; | |
2793 | pSMB->FileName[name_len] = 0; | |
2794 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2795 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2796 | name_len = strnlen(searchName, PATH_MAX); |
2797 | name_len++; /* trailing null */ | |
2798 | strncpy(pSMB->FileName, searchName, name_len); | |
2799 | } | |
2800 | ||
2801 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2802 | pSMB->TotalDataCount = 0; | |
2803 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2804 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2805 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2806 | pSMB->MaxSetupCount = 0; | |
2807 | pSMB->Reserved = 0; | |
2808 | pSMB->Flags = 0; | |
2809 | pSMB->Timeout = 0; | |
2810 | pSMB->Reserved2 = 0; | |
2811 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2812 | offsetof(struct smb_com_transaction2_qpi_req, |
2813 | InformationLevel) - 4); | |
1da177e4 LT |
2814 | pSMB->DataCount = 0; |
2815 | pSMB->DataOffset = 0; | |
2816 | pSMB->SetupCount = 1; | |
2817 | pSMB->Reserved3 = 0; | |
2818 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2819 | byte_count = params + 1 /* pad */ ; | |
2820 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2821 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2822 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2823 | pSMB->Reserved4 = 0; | |
2824 | pSMB->hdr.smb_buf_length += byte_count; | |
2825 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2826 | ||
2827 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2828 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2829 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 2830 | if (rc) { |
b6b38f70 | 2831 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
2832 | } else { |
2833 | /* decode response */ | |
50c2f753 | 2834 | |
1da177e4 LT |
2835 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2836 | if (rc || (pSMBr->ByteCount < 2)) | |
2837 | /* BB also check enough total bytes returned */ | |
2838 | rc = -EIO; /* bad smb */ | |
2839 | else { | |
2840 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2841 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2842 | rc = cifs_copy_posix_acl(acl_inf, | |
2843 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2844 | buflen, acl_type, count); |
1da177e4 LT |
2845 | } |
2846 | } | |
2847 | cifs_buf_release(pSMB); | |
2848 | if (rc == -EAGAIN) | |
2849 | goto queryAclRetry; | |
2850 | return rc; | |
2851 | } | |
2852 | ||
2853 | int | |
2854 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2855 | const unsigned char *fileName, |
2856 | const char *local_acl, const int buflen, | |
2857 | const int acl_type, | |
2858 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2859 | { |
2860 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2861 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2862 | char *parm_data; | |
2863 | int name_len; | |
2864 | int rc = 0; | |
2865 | int bytes_returned = 0; | |
2866 | __u16 params, byte_count, data_count, param_offset, offset; | |
2867 | ||
b6b38f70 | 2868 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
2869 | setAclRetry: |
2870 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2871 | (void **) &pSMBr); |
1da177e4 LT |
2872 | if (rc) |
2873 | return rc; | |
2874 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2875 | name_len = | |
50c2f753 | 2876 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2877 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2878 | name_len++; /* trailing null */ |
2879 | name_len *= 2; | |
50c2f753 | 2880 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2881 | name_len = strnlen(fileName, PATH_MAX); |
2882 | name_len++; /* trailing null */ | |
2883 | strncpy(pSMB->FileName, fileName, name_len); | |
2884 | } | |
2885 | params = 6 + name_len; | |
2886 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2887 | /* BB find max SMB size from sess */ |
2888 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2889 | pSMB->MaxSetupCount = 0; |
2890 | pSMB->Reserved = 0; | |
2891 | pSMB->Flags = 0; | |
2892 | pSMB->Timeout = 0; | |
2893 | pSMB->Reserved2 = 0; | |
2894 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2895 | InformationLevel) - 4; |
1da177e4 LT |
2896 | offset = param_offset + params; |
2897 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2898 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2899 | ||
2900 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2901 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2902 | |
790fe579 | 2903 | if (data_count == 0) { |
1da177e4 LT |
2904 | rc = -EOPNOTSUPP; |
2905 | goto setACLerrorExit; | |
2906 | } | |
2907 | pSMB->DataOffset = cpu_to_le16(offset); | |
2908 | pSMB->SetupCount = 1; | |
2909 | pSMB->Reserved3 = 0; | |
2910 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2911 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2912 | byte_count = 3 /* pad */ + params + data_count; | |
2913 | pSMB->DataCount = cpu_to_le16(data_count); | |
2914 | pSMB->TotalDataCount = pSMB->DataCount; | |
2915 | pSMB->ParameterCount = cpu_to_le16(params); | |
2916 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2917 | pSMB->Reserved4 = 0; | |
2918 | pSMB->hdr.smb_buf_length += byte_count; | |
2919 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2920 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2921 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2922 | if (rc) |
b6b38f70 | 2923 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
2924 | |
2925 | setACLerrorExit: | |
2926 | cifs_buf_release(pSMB); | |
2927 | if (rc == -EAGAIN) | |
2928 | goto setAclRetry; | |
2929 | return rc; | |
2930 | } | |
2931 | ||
f654bac2 SF |
2932 | /* BB fix tabs in this function FIXME BB */ |
2933 | int | |
2934 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 2935 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 2936 | { |
50c2f753 SF |
2937 | int rc = 0; |
2938 | struct smb_t2_qfi_req *pSMB = NULL; | |
2939 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2940 | int bytes_returned; | |
2941 | __u16 params, byte_count; | |
f654bac2 | 2942 | |
b6b38f70 | 2943 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
2944 | if (tcon == NULL) |
2945 | return -ENODEV; | |
f654bac2 SF |
2946 | |
2947 | GetExtAttrRetry: | |
790fe579 SF |
2948 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2949 | (void **) &pSMBr); | |
2950 | if (rc) | |
2951 | return rc; | |
f654bac2 | 2952 | |
ad7a2926 | 2953 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
2954 | pSMB->t2.TotalDataCount = 0; |
2955 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2956 | /* BB find exact max data count below from sess structure BB */ | |
2957 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2958 | pSMB->t2.MaxSetupCount = 0; | |
2959 | pSMB->t2.Reserved = 0; | |
2960 | pSMB->t2.Flags = 0; | |
2961 | pSMB->t2.Timeout = 0; | |
2962 | pSMB->t2.Reserved2 = 0; | |
2963 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
2964 | Fid) - 4); | |
2965 | pSMB->t2.DataCount = 0; | |
2966 | pSMB->t2.DataOffset = 0; | |
2967 | pSMB->t2.SetupCount = 1; | |
2968 | pSMB->t2.Reserved3 = 0; | |
2969 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
2970 | byte_count = params + 1 /* pad */ ; | |
2971 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
2972 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
2973 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
2974 | pSMB->Pad = 0; | |
f654bac2 | 2975 | pSMB->Fid = netfid; |
790fe579 SF |
2976 | pSMB->hdr.smb_buf_length += byte_count; |
2977 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
2978 | ||
2979 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2980 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2981 | if (rc) { | |
b6b38f70 | 2982 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
2983 | } else { |
2984 | /* decode response */ | |
2985 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2986 | if (rc || (pSMBr->ByteCount < 2)) | |
2987 | /* BB also check enough total bytes returned */ | |
2988 | /* If rc should we check for EOPNOSUPP and | |
2989 | disable the srvino flag? or in caller? */ | |
2990 | rc = -EIO; /* bad smb */ | |
2991 | else { | |
2992 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2993 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2994 | struct file_chattr_info *pfinfo; | |
2995 | /* BB Do we need a cast or hash here ? */ | |
2996 | if (count != 16) { | |
b6b38f70 | 2997 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
2998 | rc = -EIO; |
2999 | goto GetExtAttrOut; | |
3000 | } | |
3001 | pfinfo = (struct file_chattr_info *) | |
3002 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3003 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3004 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3005 | } |
3006 | } | |
f654bac2 | 3007 | GetExtAttrOut: |
790fe579 SF |
3008 | cifs_buf_release(pSMB); |
3009 | if (rc == -EAGAIN) | |
3010 | goto GetExtAttrRetry; | |
3011 | return rc; | |
f654bac2 SF |
3012 | } |
3013 | ||
f654bac2 | 3014 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3015 | |
79df1bae JL |
3016 | #ifdef CONFIG_CIFS_ACL |
3017 | /* | |
3018 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3019 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3020 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3021 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3022 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3023 | * by caller | |
3024 | */ | |
3025 | static int | |
3026 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
3027 | const int parm_len, struct cifsTconInfo *tcon, | |
3028 | void **ret_buf) | |
3029 | { | |
3030 | int rc; | |
3031 | __u32 temp_offset; | |
3032 | struct smb_com_ntransact_req *pSMB; | |
3033 | ||
3034 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3035 | (void **)&pSMB); | |
3036 | if (rc) | |
3037 | return rc; | |
3038 | *ret_buf = (void *)pSMB; | |
3039 | pSMB->Reserved = 0; | |
3040 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3041 | pSMB->TotalDataCount = 0; | |
3042 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
3043 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3044 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3045 | pSMB->DataCount = pSMB->TotalDataCount; | |
3046 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3047 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3048 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3049 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3050 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3051 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3052 | return 0; | |
3053 | } | |
3054 | ||
3055 | static int | |
3056 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3057 | __u32 *pparmlen, __u32 *pdatalen) | |
3058 | { | |
3059 | char *end_of_smb; | |
3060 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3061 | struct smb_com_ntransact_rsp *pSMBr; | |
3062 | ||
3063 | *pdatalen = 0; | |
3064 | *pparmlen = 0; | |
3065 | ||
3066 | if (buf == NULL) | |
3067 | return -EINVAL; | |
3068 | ||
3069 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3070 | ||
3071 | /* ByteCount was converted from little endian in SendReceive */ | |
3072 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + | |
3073 | (char *)&pSMBr->ByteCount; | |
3074 | ||
3075 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3076 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3077 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3078 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3079 | ||
3080 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3081 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3082 | ||
3083 | /* should we also check that parm and data areas do not overlap? */ | |
3084 | if (*ppparm > end_of_smb) { | |
3085 | cFYI(1, "parms start after end of smb"); | |
3086 | return -EINVAL; | |
3087 | } else if (parm_count + *ppparm > end_of_smb) { | |
3088 | cFYI(1, "parm end after end of smb"); | |
3089 | return -EINVAL; | |
3090 | } else if (*ppdata > end_of_smb) { | |
3091 | cFYI(1, "data starts after end of smb"); | |
3092 | return -EINVAL; | |
3093 | } else if (data_count + *ppdata > end_of_smb) { | |
3094 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3095 | *ppdata, data_count, (data_count + *ppdata), | |
3096 | end_of_smb, pSMBr); | |
3097 | return -EINVAL; | |
3098 | } else if (parm_count + data_count > pSMBr->ByteCount) { | |
3099 | cFYI(1, "parm count and data count larger than SMB"); | |
3100 | return -EINVAL; | |
3101 | } | |
3102 | *pdatalen = data_count; | |
3103 | *pparmlen = parm_count; | |
3104 | return 0; | |
3105 | } | |
3106 | ||
0a4b92c0 SF |
3107 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3108 | int | |
3109 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3110 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3111 | { |
3112 | int rc = 0; | |
3113 | int buf_type = 0; | |
ad7a2926 | 3114 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3115 | struct kvec iov[1]; |
3116 | ||
b6b38f70 | 3117 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3118 | |
630f3f0c SF |
3119 | *pbuflen = 0; |
3120 | *acl_inf = NULL; | |
3121 | ||
b9c7a2bb | 3122 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3123 | 8 /* parm len */, tcon, (void **) &pSMB); |
3124 | if (rc) | |
3125 | return rc; | |
3126 | ||
3127 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3128 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3129 | pSMB->MaxSetupCount = 0; | |
3130 | pSMB->Fid = fid; /* file handle always le */ | |
3131 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3132 | CIFS_ACL_DACL); | |
3133 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3134 | pSMB->hdr.smb_buf_length += 11; | |
3135 | iov[0].iov_base = (char *)pSMB; | |
3136 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3137 | ||
a761ac57 | 3138 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3139 | 0); |
0a4b92c0 SF |
3140 | cifs_stats_inc(&tcon->num_acl_get); |
3141 | if (rc) { | |
b6b38f70 | 3142 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3143 | } else { /* decode response */ |
ad7a2926 | 3144 | __le32 *parm; |
630f3f0c SF |
3145 | __u32 parm_len; |
3146 | __u32 acl_len; | |
50c2f753 | 3147 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3148 | char *pdata; |
0a4b92c0 SF |
3149 | |
3150 | /* validate_nttransact */ | |
50c2f753 | 3151 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3152 | &pdata, &parm_len, pbuflen); |
790fe579 | 3153 | if (rc) |
0a4b92c0 SF |
3154 | goto qsec_out; |
3155 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3156 | ||
b6b38f70 | 3157 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3158 | |
3159 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3160 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3161 | *pbuflen = 0; |
0a4b92c0 SF |
3162 | goto qsec_out; |
3163 | } | |
3164 | ||
3165 | /* BB check that data area is minimum length and as big as acl_len */ | |
3166 | ||
af6f4612 | 3167 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3168 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3169 | cERROR(1, "acl length %d does not match %d", |
3170 | acl_len, *pbuflen); | |
630f3f0c SF |
3171 | if (*pbuflen > acl_len) |
3172 | *pbuflen = acl_len; | |
3173 | } | |
0a4b92c0 | 3174 | |
630f3f0c SF |
3175 | /* check if buffer is big enough for the acl |
3176 | header followed by the smallest SID */ | |
3177 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3178 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3179 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3180 | rc = -EINVAL; |
3181 | *pbuflen = 0; | |
3182 | } else { | |
3183 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3184 | if (*acl_inf == NULL) { | |
3185 | *pbuflen = 0; | |
3186 | rc = -ENOMEM; | |
3187 | } | |
3188 | memcpy(*acl_inf, pdata, *pbuflen); | |
3189 | } | |
0a4b92c0 SF |
3190 | } |
3191 | qsec_out: | |
790fe579 | 3192 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3193 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3194 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3195 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3196 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3197 | return rc; |
3198 | } | |
97837582 SF |
3199 | |
3200 | int | |
3201 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3202 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3203 | { | |
3204 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3205 | int rc = 0; | |
3206 | int bytes_returned = 0; | |
3207 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3208 | NTRANSACT_RSP *pSMBr = NULL; | |
3209 | ||
3210 | setCifsAclRetry: | |
3211 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3212 | (void **) &pSMBr); | |
3213 | if (rc) | |
3214 | return (rc); | |
3215 | ||
3216 | pSMB->MaxSetupCount = 0; | |
3217 | pSMB->Reserved = 0; | |
3218 | ||
3219 | param_count = 8; | |
3220 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3221 | data_count = acllen; | |
3222 | data_offset = param_offset + param_count; | |
3223 | byte_count = 3 /* pad */ + param_count; | |
3224 | ||
3225 | pSMB->DataCount = cpu_to_le32(data_count); | |
3226 | pSMB->TotalDataCount = pSMB->DataCount; | |
3227 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3228 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3229 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3230 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3231 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3232 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3233 | pSMB->SetupCount = 0; | |
3234 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3235 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3236 | ||
3237 | pSMB->Fid = fid; /* file handle always le */ | |
3238 | pSMB->Reserved2 = 0; | |
3239 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3240 | ||
3241 | if (pntsd && acllen) { | |
3242 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3243 | (char *) pntsd, | |
3244 | acllen); | |
3245 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3246 | ||
3247 | } else | |
3248 | pSMB->hdr.smb_buf_length += byte_count; | |
3249 | ||
3250 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3251 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3252 | ||
b6b38f70 | 3253 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3254 | if (rc) |
b6b38f70 | 3255 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3256 | cifs_buf_release(pSMB); |
3257 | ||
3258 | if (rc == -EAGAIN) | |
3259 | goto setCifsAclRetry; | |
3260 | ||
3261 | return (rc); | |
3262 | } | |
3263 | ||
79df1bae | 3264 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3265 | |
6b8edfe0 SF |
3266 | /* Legacy Query Path Information call for lookup to old servers such |
3267 | as Win9x/WinME */ | |
3268 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3269 | const unsigned char *searchName, |
3270 | FILE_ALL_INFO *pFinfo, | |
3271 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3272 | { |
ad7a2926 SF |
3273 | QUERY_INFORMATION_REQ *pSMB; |
3274 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3275 | int rc = 0; |
3276 | int bytes_returned; | |
3277 | int name_len; | |
3278 | ||
b6b38f70 | 3279 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3280 | QInfRetry: |
3281 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3282 | (void **) &pSMBr); |
6b8edfe0 SF |
3283 | if (rc) |
3284 | return rc; | |
3285 | ||
3286 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3287 | name_len = | |
50c2f753 SF |
3288 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3289 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3290 | name_len++; /* trailing null */ |
3291 | name_len *= 2; | |
50c2f753 | 3292 | } else { |
6b8edfe0 SF |
3293 | name_len = strnlen(searchName, PATH_MAX); |
3294 | name_len++; /* trailing null */ | |
3295 | strncpy(pSMB->FileName, searchName, name_len); | |
3296 | } | |
3297 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3298 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3299 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3300 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3301 | ||
3302 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3303 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3304 | if (rc) { |
b6b38f70 | 3305 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3306 | } else if (pFinfo) { |
1bd5bbcb SF |
3307 | struct timespec ts; |
3308 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3309 | |
3310 | /* decode response */ | |
1bd5bbcb | 3311 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3312 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3313 | ts.tv_nsec = 0; |
3314 | ts.tv_sec = time; | |
3315 | /* decode time fields */ | |
733f99ac | 3316 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3317 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3318 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3319 | pFinfo->AllocationSize = |
3320 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3321 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3322 | pFinfo->Attributes = | |
3323 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3324 | } else |
3325 | rc = -EIO; /* bad buffer passed in */ | |
3326 | ||
3327 | cifs_buf_release(pSMB); | |
3328 | ||
3329 | if (rc == -EAGAIN) | |
3330 | goto QInfRetry; | |
3331 | ||
3332 | return rc; | |
3333 | } | |
3334 | ||
bcd5357f JL |
3335 | int |
3336 | CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3337 | u16 netfid, FILE_ALL_INFO *pFindData) | |
3338 | { | |
3339 | struct smb_t2_qfi_req *pSMB = NULL; | |
3340 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3341 | int rc = 0; | |
3342 | int bytes_returned; | |
3343 | __u16 params, byte_count; | |
3344 | ||
3345 | QFileInfoRetry: | |
3346 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3347 | (void **) &pSMBr); | |
3348 | if (rc) | |
3349 | return rc; | |
3350 | ||
3351 | params = 2 /* level */ + 2 /* fid */; | |
3352 | pSMB->t2.TotalDataCount = 0; | |
3353 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3354 | /* BB find exact max data count below from sess structure BB */ | |
3355 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3356 | pSMB->t2.MaxSetupCount = 0; | |
3357 | pSMB->t2.Reserved = 0; | |
3358 | pSMB->t2.Flags = 0; | |
3359 | pSMB->t2.Timeout = 0; | |
3360 | pSMB->t2.Reserved2 = 0; | |
3361 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3362 | Fid) - 4); | |
3363 | pSMB->t2.DataCount = 0; | |
3364 | pSMB->t2.DataOffset = 0; | |
3365 | pSMB->t2.SetupCount = 1; | |
3366 | pSMB->t2.Reserved3 = 0; | |
3367 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3368 | byte_count = params + 1 /* pad */ ; | |
3369 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3370 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3371 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3372 | pSMB->Pad = 0; | |
3373 | pSMB->Fid = netfid; | |
3374 | pSMB->hdr.smb_buf_length += byte_count; | |
6b8edfe0 | 3375 | |
bcd5357f JL |
3376 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3377 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3378 | if (rc) { | |
f19159dc | 3379 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3380 | } else { /* decode response */ |
3381 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3382 | |
bcd5357f JL |
3383 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3384 | rc = -EIO; | |
3385 | else if (pSMBr->ByteCount < 40) | |
3386 | rc = -EIO; /* bad smb */ | |
3387 | else if (pFindData) { | |
3388 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3389 | memcpy((char *) pFindData, | |
3390 | (char *) &pSMBr->hdr.Protocol + | |
3391 | data_offset, sizeof(FILE_ALL_INFO)); | |
3392 | } else | |
3393 | rc = -ENOMEM; | |
3394 | } | |
3395 | cifs_buf_release(pSMB); | |
3396 | if (rc == -EAGAIN) | |
3397 | goto QFileInfoRetry; | |
6b8edfe0 | 3398 | |
bcd5357f JL |
3399 | return rc; |
3400 | } | |
6b8edfe0 | 3401 | |
1da177e4 LT |
3402 | int |
3403 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3404 | const unsigned char *searchName, | |
ad7a2926 | 3405 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3406 | int legacy /* old style infolevel */, |
737b758c | 3407 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3408 | { |
3409 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3410 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3411 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3412 | int rc = 0; | |
3413 | int bytes_returned; | |
3414 | int name_len; | |
3415 | __u16 params, byte_count; | |
3416 | ||
b6b38f70 | 3417 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3418 | QPathInfoRetry: |
3419 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3420 | (void **) &pSMBr); | |
3421 | if (rc) | |
3422 | return rc; | |
3423 | ||
3424 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3425 | name_len = | |
50c2f753 | 3426 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3427 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3428 | name_len++; /* trailing null */ |
3429 | name_len *= 2; | |
50c2f753 | 3430 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3431 | name_len = strnlen(searchName, PATH_MAX); |
3432 | name_len++; /* trailing null */ | |
3433 | strncpy(pSMB->FileName, searchName, name_len); | |
3434 | } | |
3435 | ||
50c2f753 | 3436 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3437 | pSMB->TotalDataCount = 0; |
3438 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3439 | /* BB find exact max SMB PDU from sess structure BB */ |
3440 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3441 | pSMB->MaxSetupCount = 0; |
3442 | pSMB->Reserved = 0; | |
3443 | pSMB->Flags = 0; | |
3444 | pSMB->Timeout = 0; | |
3445 | pSMB->Reserved2 = 0; | |
3446 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3447 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3448 | pSMB->DataCount = 0; |
3449 | pSMB->DataOffset = 0; | |
3450 | pSMB->SetupCount = 1; | |
3451 | pSMB->Reserved3 = 0; | |
3452 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3453 | byte_count = params + 1 /* pad */ ; | |
3454 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3455 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3456 | if (legacy) |
acf1a1b1 SF |
3457 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3458 | else | |
3459 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3460 | pSMB->Reserved4 = 0; |
3461 | pSMB->hdr.smb_buf_length += byte_count; | |
3462 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3463 | ||
3464 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3465 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3466 | if (rc) { | |
b6b38f70 | 3467 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3468 | } else { /* decode response */ |
3469 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3470 | ||
acf1a1b1 SF |
3471 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3472 | rc = -EIO; | |
50c2f753 | 3473 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3474 | rc = -EIO; /* bad smb */ |
790fe579 | 3475 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3476 | rc = -EIO; /* 24 or 26 expected but we do not read |
3477 | last field */ | |
3478 | else if (pFindData) { | |
acf1a1b1 | 3479 | int size; |
1da177e4 | 3480 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3481 | |
3482 | /* On legacy responses we do not read the last field, | |
3483 | EAsize, fortunately since it varies by subdialect and | |
3484 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3485 | bytes depending but we don't care here */ | |
3486 | if (legacy) | |
acf1a1b1 SF |
3487 | size = sizeof(FILE_INFO_STANDARD); |
3488 | else | |
3489 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3490 | memcpy((char *) pFindData, |
3491 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3492 | data_offset, size); |
1da177e4 LT |
3493 | } else |
3494 | rc = -ENOMEM; | |
3495 | } | |
3496 | cifs_buf_release(pSMB); | |
3497 | if (rc == -EAGAIN) | |
3498 | goto QPathInfoRetry; | |
3499 | ||
3500 | return rc; | |
3501 | } | |
3502 | ||
c8634fd3 JL |
3503 | int |
3504 | CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3505 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) | |
3506 | { | |
3507 | struct smb_t2_qfi_req *pSMB = NULL; | |
3508 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3509 | int rc = 0; | |
3510 | int bytes_returned; | |
3511 | __u16 params, byte_count; | |
3512 | ||
3513 | UnixQFileInfoRetry: | |
3514 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3515 | (void **) &pSMBr); | |
3516 | if (rc) | |
3517 | return rc; | |
3518 | ||
3519 | params = 2 /* level */ + 2 /* fid */; | |
3520 | pSMB->t2.TotalDataCount = 0; | |
3521 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3522 | /* BB find exact max data count below from sess structure BB */ | |
3523 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3524 | pSMB->t2.MaxSetupCount = 0; | |
3525 | pSMB->t2.Reserved = 0; | |
3526 | pSMB->t2.Flags = 0; | |
3527 | pSMB->t2.Timeout = 0; | |
3528 | pSMB->t2.Reserved2 = 0; | |
3529 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3530 | Fid) - 4); | |
3531 | pSMB->t2.DataCount = 0; | |
3532 | pSMB->t2.DataOffset = 0; | |
3533 | pSMB->t2.SetupCount = 1; | |
3534 | pSMB->t2.Reserved3 = 0; | |
3535 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3536 | byte_count = params + 1 /* pad */ ; | |
3537 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3538 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3539 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3540 | pSMB->Pad = 0; | |
3541 | pSMB->Fid = netfid; | |
3542 | pSMB->hdr.smb_buf_length += byte_count; | |
3543 | ||
3544 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3545 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3546 | if (rc) { | |
f19159dc | 3547 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3548 | } else { /* decode response */ |
3549 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3550 | ||
3551 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
f19159dc | 3552 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3553 | "Unix Extensions can be disabled on mount " |
f19159dc | 3554 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3555 | rc = -EIO; /* bad smb */ |
3556 | } else { | |
3557 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3558 | memcpy((char *) pFindData, | |
3559 | (char *) &pSMBr->hdr.Protocol + | |
3560 | data_offset, | |
3561 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3562 | } | |
3563 | } | |
3564 | ||
3565 | cifs_buf_release(pSMB); | |
3566 | if (rc == -EAGAIN) | |
3567 | goto UnixQFileInfoRetry; | |
3568 | ||
3569 | return rc; | |
3570 | } | |
3571 | ||
1da177e4 LT |
3572 | int |
3573 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3574 | const unsigned char *searchName, | |
582d21e5 | 3575 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3576 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3577 | { |
3578 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3579 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3580 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3581 | int rc = 0; | |
3582 | int bytes_returned = 0; | |
3583 | int name_len; | |
3584 | __u16 params, byte_count; | |
3585 | ||
b6b38f70 | 3586 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3587 | UnixQPathInfoRetry: |
3588 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3589 | (void **) &pSMBr); | |
3590 | if (rc) | |
3591 | return rc; | |
3592 | ||
3593 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3594 | name_len = | |
b1a45695 | 3595 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3596 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3597 | name_len++; /* trailing null */ |
3598 | name_len *= 2; | |
50c2f753 | 3599 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3600 | name_len = strnlen(searchName, PATH_MAX); |
3601 | name_len++; /* trailing null */ | |
3602 | strncpy(pSMB->FileName, searchName, name_len); | |
3603 | } | |
3604 | ||
50c2f753 | 3605 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3606 | pSMB->TotalDataCount = 0; |
3607 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3608 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3609 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3610 | pSMB->MaxSetupCount = 0; |
3611 | pSMB->Reserved = 0; | |
3612 | pSMB->Flags = 0; | |
3613 | pSMB->Timeout = 0; | |
3614 | pSMB->Reserved2 = 0; | |
3615 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3616 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3617 | pSMB->DataCount = 0; |
3618 | pSMB->DataOffset = 0; | |
3619 | pSMB->SetupCount = 1; | |
3620 | pSMB->Reserved3 = 0; | |
3621 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3622 | byte_count = params + 1 /* pad */ ; | |
3623 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3624 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3625 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3626 | pSMB->Reserved4 = 0; | |
3627 | pSMB->hdr.smb_buf_length += byte_count; | |
3628 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3629 | ||
3630 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3631 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3632 | if (rc) { | |
b6b38f70 | 3633 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3634 | } else { /* decode response */ |
3635 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3636 | ||
3637 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
b6b38f70 | 3638 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3639 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3640 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3641 | rc = -EIO; /* bad smb */ |
3642 | } else { | |
3643 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3644 | memcpy((char *) pFindData, | |
3645 | (char *) &pSMBr->hdr.Protocol + | |
3646 | data_offset, | |
630f3f0c | 3647 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3648 | } |
3649 | } | |
3650 | cifs_buf_release(pSMB); | |
3651 | if (rc == -EAGAIN) | |
3652 | goto UnixQPathInfoRetry; | |
3653 | ||
3654 | return rc; | |
3655 | } | |
3656 | ||
1da177e4 LT |
3657 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3658 | int | |
3659 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3660 | const char *searchName, |
1da177e4 | 3661 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3662 | __u16 *pnetfid, |
3663 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3664 | { |
3665 | /* level 257 SMB_ */ | |
3666 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3667 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3668 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3669 | int rc = 0; |
3670 | int bytes_returned = 0; | |
3671 | int name_len; | |
3672 | __u16 params, byte_count; | |
3673 | ||
b6b38f70 | 3674 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3675 | |
3676 | findFirstRetry: | |
3677 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3678 | (void **) &pSMBr); | |
3679 | if (rc) | |
3680 | return rc; | |
3681 | ||
3682 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3683 | name_len = | |
50c2f753 | 3684 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3685 | PATH_MAX, nls_codepage, remap); |
3686 | /* We can not add the asterik earlier in case | |
3687 | it got remapped to 0xF03A as if it were part of the | |
3688 | directory name instead of a wildcard */ | |
1da177e4 | 3689 | name_len *= 2; |
ac67055e | 3690 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3691 | pSMB->FileName[name_len+1] = 0; |
3692 | pSMB->FileName[name_len+2] = '*'; | |
3693 | pSMB->FileName[name_len+3] = 0; | |
3694 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3695 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3696 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3697 | name_len += 2; |
1da177e4 LT |
3698 | } else { /* BB add check for overrun of SMB buf BB */ |
3699 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3700 | /* BB fix here and in unicode clause above ie |
790fe579 | 3701 | if (name_len > buffersize-header) |
1da177e4 LT |
3702 | free buffer exit; BB */ |
3703 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3704 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3705 | pSMB->FileName[name_len+1] = '*'; |
3706 | pSMB->FileName[name_len+2] = 0; | |
3707 | name_len += 3; | |
1da177e4 LT |
3708 | } |
3709 | ||
3710 | params = 12 + name_len /* includes null */ ; | |
3711 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3712 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3713 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3714 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3715 | pSMB->MaxSetupCount = 0; | |
3716 | pSMB->Reserved = 0; | |
3717 | pSMB->Flags = 0; | |
3718 | pSMB->Timeout = 0; | |
3719 | pSMB->Reserved2 = 0; | |
3720 | byte_count = params + 1 /* pad */ ; | |
3721 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3722 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3723 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3724 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3725 | - 4); | |
1da177e4 LT |
3726 | pSMB->DataCount = 0; |
3727 | pSMB->DataOffset = 0; | |
3728 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3729 | pSMB->Reserved3 = 0; | |
3730 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3731 | pSMB->SearchAttributes = | |
3732 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3733 | ATTR_DIRECTORY); | |
50c2f753 SF |
3734 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3735 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3736 | CIFS_SEARCH_RETURN_RESUME); |
3737 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3738 | ||
3739 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3740 | pSMB->SearchStorageType = 0; | |
3741 | pSMB->hdr.smb_buf_length += byte_count; | |
3742 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3743 | ||
3744 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3745 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3746 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3747 | |
88274815 SF |
3748 | if (rc) {/* BB add logic to retry regular search if Unix search |
3749 | rejected unexpectedly by server */ | |
1da177e4 | 3750 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 3751 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 3752 | |
88274815 | 3753 | cifs_buf_release(pSMB); |
1da177e4 LT |
3754 | |
3755 | /* BB eventually could optimize out free and realloc of buf */ | |
3756 | /* for this case */ | |
3757 | if (rc == -EAGAIN) | |
3758 | goto findFirstRetry; | |
3759 | } else { /* decode response */ | |
3760 | /* BB remember to free buffer if error BB */ | |
3761 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3762 | if (rc == 0) { |
b77d753c SF |
3763 | unsigned int lnoff; |
3764 | ||
1da177e4 | 3765 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3766 | psrch_inf->unicode = true; |
1da177e4 | 3767 | else |
4b18f2a9 | 3768 | psrch_inf->unicode = false; |
1da177e4 LT |
3769 | |
3770 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3771 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3772 | psrch_inf->srch_entries_start = |
3773 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3774 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3775 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3776 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3777 | ||
790fe579 | 3778 | if (parms->EndofSearch) |
4b18f2a9 | 3779 | psrch_inf->endOfSearch = true; |
1da177e4 | 3780 | else |
4b18f2a9 | 3781 | psrch_inf->endOfSearch = false; |
1da177e4 | 3782 | |
50c2f753 SF |
3783 | psrch_inf->entries_in_buffer = |
3784 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3785 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3786 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3787 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3788 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3789 | lnoff) { | |
b6b38f70 | 3790 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3791 | psrch_inf->last_entry = NULL; |
3792 | return rc; | |
3793 | } | |
3794 | ||
0752f152 | 3795 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3796 | lnoff; |
3797 | ||
1da177e4 LT |
3798 | *pnetfid = parms->SearchHandle; |
3799 | } else { | |
3800 | cifs_buf_release(pSMB); | |
3801 | } | |
3802 | } | |
3803 | ||
3804 | return rc; | |
3805 | } | |
3806 | ||
3807 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3808 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3809 | { |
3810 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3811 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3812 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3813 | char *response_data; |
3814 | int rc = 0; | |
3815 | int bytes_returned, name_len; | |
3816 | __u16 params, byte_count; | |
3817 | ||
b6b38f70 | 3818 | cFYI(1, "In FindNext"); |
1da177e4 | 3819 | |
4b18f2a9 | 3820 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3821 | return -ENOENT; |
3822 | ||
3823 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3824 | (void **) &pSMBr); | |
3825 | if (rc) | |
3826 | return rc; | |
3827 | ||
50c2f753 | 3828 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3829 | byte_count = 0; |
3830 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3831 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3832 | pSMB->MaxDataCount = | |
50c2f753 SF |
3833 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3834 | 0xFFFFFF00); | |
1da177e4 LT |
3835 | pSMB->MaxSetupCount = 0; |
3836 | pSMB->Reserved = 0; | |
3837 | pSMB->Flags = 0; | |
3838 | pSMB->Timeout = 0; | |
3839 | pSMB->Reserved2 = 0; | |
3840 | pSMB->ParameterOffset = cpu_to_le16( | |
3841 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3842 | pSMB->DataCount = 0; | |
3843 | pSMB->DataOffset = 0; | |
3844 | pSMB->SetupCount = 1; | |
3845 | pSMB->Reserved3 = 0; | |
3846 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3847 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3848 | pSMB->SearchCount = | |
630f3f0c | 3849 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3850 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3851 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3852 | pSMB->SearchFlags = | |
3853 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3854 | ||
3855 | name_len = psrch_inf->resume_name_len; | |
3856 | params += name_len; | |
790fe579 | 3857 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3858 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3859 | byte_count += name_len; | |
ef6724e3 SF |
3860 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3861 | pSMB->ResumeFileName[name_len] = 0; | |
3862 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3863 | } else { |
3864 | rc = -EINVAL; | |
3865 | goto FNext2_err_exit; | |
3866 | } | |
3867 | byte_count = params + 1 /* pad */ ; | |
3868 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3869 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3870 | pSMB->hdr.smb_buf_length += byte_count; | |
3871 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3872 | |
1da177e4 LT |
3873 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3874 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3875 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3876 | if (rc) { |
3877 | if (rc == -EBADF) { | |
4b18f2a9 | 3878 | psrch_inf->endOfSearch = true; |
6353450a | 3879 | cifs_buf_release(pSMB); |
50c2f753 | 3880 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 3881 | } else |
b6b38f70 | 3882 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
3883 | } else { /* decode response */ |
3884 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3885 | |
790fe579 | 3886 | if (rc == 0) { |
b77d753c SF |
3887 | unsigned int lnoff; |
3888 | ||
1da177e4 LT |
3889 | /* BB fixme add lock for file (srch_info) struct here */ |
3890 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3891 | psrch_inf->unicode = true; |
1da177e4 | 3892 | else |
4b18f2a9 | 3893 | psrch_inf->unicode = false; |
1da177e4 LT |
3894 | response_data = (char *) &pSMBr->hdr.Protocol + |
3895 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3896 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3897 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3898 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3899 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3900 | cifs_small_buf_release( |
3901 | psrch_inf->ntwrk_buf_start); | |
3902 | else | |
3903 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3904 | psrch_inf->srch_entries_start = response_data; |
3905 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3906 | psrch_inf->smallBuf = 0; |
790fe579 | 3907 | if (parms->EndofSearch) |
4b18f2a9 | 3908 | psrch_inf->endOfSearch = true; |
1da177e4 | 3909 | else |
4b18f2a9 | 3910 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3911 | psrch_inf->entries_in_buffer = |
3912 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3913 | psrch_inf->index_of_last_entry += |
3914 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3915 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3916 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3917 | lnoff) { | |
b6b38f70 | 3918 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3919 | psrch_inf->last_entry = NULL; |
3920 | return rc; | |
3921 | } else | |
3922 | psrch_inf->last_entry = | |
3923 | psrch_inf->srch_entries_start + lnoff; | |
3924 | ||
b6b38f70 JP |
3925 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
3926 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
3927 | |
3928 | /* BB fixme add unlock here */ | |
3929 | } | |
3930 | ||
3931 | } | |
3932 | ||
3933 | /* BB On error, should we leave previous search buf (and count and | |
3934 | last entry fields) intact or free the previous one? */ | |
3935 | ||
3936 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3937 | since file handle passed in no longer valid */ | |
3938 | FNext2_err_exit: | |
3939 | if (rc != 0) | |
3940 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3941 | return rc; |
3942 | } | |
3943 | ||
3944 | int | |
50c2f753 SF |
3945 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3946 | const __u16 searchHandle) | |
1da177e4 LT |
3947 | { |
3948 | int rc = 0; | |
3949 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 3950 | |
b6b38f70 | 3951 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
3952 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
3953 | ||
3954 | /* no sense returning error if session restarted | |
3955 | as file handle has been closed */ | |
790fe579 | 3956 | if (rc == -EAGAIN) |
1da177e4 LT |
3957 | return 0; |
3958 | if (rc) | |
3959 | return rc; | |
3960 | ||
1da177e4 LT |
3961 | pSMB->FileID = searchHandle; |
3962 | pSMB->ByteCount = 0; | |
133672ef | 3963 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3964 | if (rc) |
b6b38f70 | 3965 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 3966 | |
a4544347 | 3967 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3968 | |
3969 | /* Since session is dead, search handle closed on server already */ | |
3970 | if (rc == -EAGAIN) | |
3971 | rc = 0; | |
3972 | ||
3973 | return rc; | |
3974 | } | |
3975 | ||
1da177e4 LT |
3976 | int |
3977 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3978 | const unsigned char *searchName, |
ad7a2926 | 3979 | __u64 *inode_number, |
50c2f753 | 3980 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3981 | { |
3982 | int rc = 0; | |
3983 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3984 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3985 | int name_len, bytes_returned; | |
3986 | __u16 params, byte_count; | |
3987 | ||
b6b38f70 | 3988 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 3989 | if (tcon == NULL) |
50c2f753 | 3990 | return -ENODEV; |
1da177e4 LT |
3991 | |
3992 | GetInodeNumberRetry: | |
3993 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3994 | (void **) &pSMBr); |
1da177e4 LT |
3995 | if (rc) |
3996 | return rc; | |
3997 | ||
1da177e4 LT |
3998 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3999 | name_len = | |
b1a45695 | 4000 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 4001 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4002 | name_len++; /* trailing null */ |
4003 | name_len *= 2; | |
50c2f753 | 4004 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4005 | name_len = strnlen(searchName, PATH_MAX); |
4006 | name_len++; /* trailing null */ | |
4007 | strncpy(pSMB->FileName, searchName, name_len); | |
4008 | } | |
4009 | ||
4010 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4011 | pSMB->TotalDataCount = 0; | |
4012 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4013 | /* BB find exact max data count below from sess structure BB */ | |
4014 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4015 | pSMB->MaxSetupCount = 0; | |
4016 | pSMB->Reserved = 0; | |
4017 | pSMB->Flags = 0; | |
4018 | pSMB->Timeout = 0; | |
4019 | pSMB->Reserved2 = 0; | |
4020 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4021 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4022 | pSMB->DataCount = 0; |
4023 | pSMB->DataOffset = 0; | |
4024 | pSMB->SetupCount = 1; | |
4025 | pSMB->Reserved3 = 0; | |
4026 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4027 | byte_count = params + 1 /* pad */ ; | |
4028 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4029 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4030 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4031 | pSMB->Reserved4 = 0; | |
4032 | pSMB->hdr.smb_buf_length += byte_count; | |
4033 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4034 | ||
4035 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4036 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4037 | if (rc) { | |
b6b38f70 | 4038 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4039 | } else { |
4040 | /* decode response */ | |
4041 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4042 | if (rc || (pSMBr->ByteCount < 2)) | |
4043 | /* BB also check enough total bytes returned */ | |
4044 | /* If rc should we check for EOPNOSUPP and | |
4045 | disable the srvino flag? or in caller? */ | |
4046 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4047 | else { |
1da177e4 LT |
4048 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4049 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4050 | struct file_internal_info *pfinfo; |
1da177e4 | 4051 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4052 | if (count < 8) { |
b6b38f70 | 4053 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4054 | rc = -EIO; |
4055 | goto GetInodeNumOut; | |
4056 | } | |
4057 | pfinfo = (struct file_internal_info *) | |
4058 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4059 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4060 | } |
4061 | } | |
4062 | GetInodeNumOut: | |
4063 | cifs_buf_release(pSMB); | |
4064 | if (rc == -EAGAIN) | |
4065 | goto GetInodeNumberRetry; | |
4066 | return rc; | |
4067 | } | |
1da177e4 | 4068 | |
fec4585f IM |
4069 | /* parses DFS refferal V3 structure |
4070 | * caller is responsible for freeing target_nodes | |
4071 | * returns: | |
4072 | * on success - 0 | |
4073 | * on failure - errno | |
4074 | */ | |
4075 | static int | |
a1fe78f1 | 4076 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4077 | unsigned int *num_of_nodes, |
4078 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4079 | const struct nls_table *nls_codepage, int remap, |
4080 | const char *searchName) | |
fec4585f IM |
4081 | { |
4082 | int i, rc = 0; | |
4083 | char *data_end; | |
4084 | bool is_unicode; | |
4085 | struct dfs_referral_level_3 *ref; | |
4086 | ||
5ca33c6a HH |
4087 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4088 | is_unicode = true; | |
4089 | else | |
4090 | is_unicode = false; | |
fec4585f IM |
4091 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4092 | ||
4093 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4094 | cERROR(1, "num_referrals: must be at least > 0," |
4095 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4096 | rc = -EINVAL; |
a1fe78f1 | 4097 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4098 | } |
4099 | ||
4100 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4101 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4102 | cERROR(1, "Referrals of V%d version are not supported," |
4103 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4104 | rc = -EINVAL; |
a1fe78f1 | 4105 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4106 | } |
4107 | ||
4108 | /* get the upper boundary of the resp buffer */ | |
4109 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4110 | le16_to_cpu(pSMBr->t2.DataCount); | |
4111 | ||
f19159dc | 4112 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4113 | *num_of_nodes, |
b6b38f70 | 4114 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4115 | |
4116 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4117 | *num_of_nodes, GFP_KERNEL); | |
4118 | if (*target_nodes == NULL) { | |
b6b38f70 | 4119 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4120 | rc = -ENOMEM; |
a1fe78f1 | 4121 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4122 | } |
4123 | ||
3ad2f3fb | 4124 | /* collect necessary data from referrals */ |
fec4585f IM |
4125 | for (i = 0; i < *num_of_nodes; i++) { |
4126 | char *temp; | |
4127 | int max_len; | |
4128 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4129 | ||
0e0d2cf3 | 4130 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4131 | if (is_unicode) { |
331c3135 JL |
4132 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4133 | GFP_KERNEL); | |
2920ee2b SF |
4134 | if (tmp == NULL) { |
4135 | rc = -ENOMEM; | |
4136 | goto parse_DFS_referrals_exit; | |
4137 | } | |
2c55608f IM |
4138 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4139 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4140 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4141 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4142 | nls_codepage); |
4143 | kfree(tmp); | |
4144 | } else | |
4145 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4146 | ||
fec4585f IM |
4147 | node->server_type = le16_to_cpu(ref->ServerType); |
4148 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4149 | ||
4150 | /* copy DfsPath */ | |
4151 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4152 | max_len = data_end - temp; | |
d185cda7 SF |
4153 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4154 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4155 | if (!node->path_name) { |
4156 | rc = -ENOMEM; | |
a1fe78f1 | 4157 | goto parse_DFS_referrals_exit; |
066ce689 | 4158 | } |
fec4585f IM |
4159 | |
4160 | /* copy link target UNC */ | |
4161 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4162 | max_len = data_end - temp; | |
d185cda7 SF |
4163 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4164 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4165 | if (!node->node_name) |
4166 | rc = -ENOMEM; | |
fec4585f IM |
4167 | } |
4168 | ||
a1fe78f1 | 4169 | parse_DFS_referrals_exit: |
fec4585f IM |
4170 | if (rc) { |
4171 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4172 | *target_nodes = NULL; | |
4173 | *num_of_nodes = 0; | |
4174 | } | |
4175 | return rc; | |
4176 | } | |
4177 | ||
1da177e4 LT |
4178 | int |
4179 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
4180 | const unsigned char *searchName, | |
c2cf07d5 SF |
4181 | struct dfs_info3_param **target_nodes, |
4182 | unsigned int *num_of_nodes, | |
737b758c | 4183 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4184 | { |
4185 | /* TRANS2_GET_DFS_REFERRAL */ | |
4186 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4187 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4188 | int rc = 0; |
4189 | int bytes_returned; | |
4190 | int name_len; | |
1da177e4 | 4191 | __u16 params, byte_count; |
c2cf07d5 SF |
4192 | *num_of_nodes = 0; |
4193 | *target_nodes = NULL; | |
1da177e4 | 4194 | |
b6b38f70 | 4195 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4196 | if (ses == NULL) |
4197 | return -ENODEV; | |
4198 | getDFSRetry: | |
4199 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4200 | (void **) &pSMBr); | |
4201 | if (rc) | |
4202 | return rc; | |
50c2f753 SF |
4203 | |
4204 | /* server pointer checked in called function, | |
1982c344 SF |
4205 | but should never be null here anyway */ |
4206 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4207 | pSMB->hdr.Tid = ses->ipc_tid; |
4208 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4209 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4210 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4211 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4212 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4213 | |
4214 | if (ses->capabilities & CAP_UNICODE) { | |
4215 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4216 | name_len = | |
b1a45695 | 4217 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4218 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4219 | name_len++; /* trailing null */ |
4220 | name_len *= 2; | |
50c2f753 | 4221 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4222 | name_len = strnlen(searchName, PATH_MAX); |
4223 | name_len++; /* trailing null */ | |
4224 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4225 | } | |
4226 | ||
790fe579 SF |
4227 | if (ses->server) { |
4228 | if (ses->server->secMode & | |
1a4e15a0 SF |
4229 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4230 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4231 | } | |
4232 | ||
50c2f753 | 4233 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4234 | |
1da177e4 LT |
4235 | params = 2 /* level */ + name_len /*includes null */ ; |
4236 | pSMB->TotalDataCount = 0; | |
4237 | pSMB->DataCount = 0; | |
4238 | pSMB->DataOffset = 0; | |
4239 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4240 | /* BB find exact max SMB PDU from sess structure BB */ |
4241 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4242 | pSMB->MaxSetupCount = 0; |
4243 | pSMB->Reserved = 0; | |
4244 | pSMB->Flags = 0; | |
4245 | pSMB->Timeout = 0; | |
4246 | pSMB->Reserved2 = 0; | |
4247 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4248 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4249 | pSMB->SetupCount = 1; |
4250 | pSMB->Reserved3 = 0; | |
4251 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4252 | byte_count = params + 3 /* pad */ ; | |
4253 | pSMB->ParameterCount = cpu_to_le16(params); | |
4254 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4255 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
4256 | pSMB->hdr.smb_buf_length += byte_count; | |
4257 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4258 | ||
4259 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4260 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4261 | if (rc) { | |
b6b38f70 | 4262 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4263 | goto GetDFSRefExit; |
4264 | } | |
4265 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4266 | |
c2cf07d5 | 4267 | /* BB Also check if enough total bytes returned? */ |
fec4585f | 4268 | if (rc || (pSMBr->ByteCount < 17)) { |
c2cf07d5 | 4269 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4270 | goto GetDFSRefExit; |
4271 | } | |
c2cf07d5 | 4272 | |
b6b38f70 | 4273 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
fec4585f | 4274 | pSMBr->ByteCount, |
b6b38f70 | 4275 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4276 | |
fec4585f | 4277 | /* parse returned result into more usable form */ |
a1fe78f1 | 4278 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4279 | target_nodes, nls_codepage, remap, |
4280 | searchName); | |
c2cf07d5 | 4281 | |
1da177e4 | 4282 | GetDFSRefExit: |
0d817bc0 | 4283 | cifs_buf_release(pSMB); |
1da177e4 LT |
4284 | |
4285 | if (rc == -EAGAIN) | |
4286 | goto getDFSRetry; | |
4287 | ||
4288 | return rc; | |
4289 | } | |
4290 | ||
20962438 SF |
4291 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4292 | int | |
4293 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4294 | { | |
4295 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4296 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4297 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4298 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4299 | int rc = 0; | |
4300 | int bytes_returned = 0; | |
4301 | __u16 params, byte_count; | |
4302 | ||
b6b38f70 | 4303 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4304 | oldQFSInfoRetry: |
4305 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4306 | (void **) &pSMBr); | |
4307 | if (rc) | |
4308 | return rc; | |
20962438 SF |
4309 | |
4310 | params = 2; /* level */ | |
4311 | pSMB->TotalDataCount = 0; | |
4312 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4313 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4314 | pSMB->MaxSetupCount = 0; | |
4315 | pSMB->Reserved = 0; | |
4316 | pSMB->Flags = 0; | |
4317 | pSMB->Timeout = 0; | |
4318 | pSMB->Reserved2 = 0; | |
4319 | byte_count = params + 1 /* pad */ ; | |
4320 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4321 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4322 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4323 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4324 | pSMB->DataCount = 0; | |
4325 | pSMB->DataOffset = 0; | |
4326 | pSMB->SetupCount = 1; | |
4327 | pSMB->Reserved3 = 0; | |
4328 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4329 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4330 | pSMB->hdr.smb_buf_length += byte_count; | |
4331 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4332 | ||
4333 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4334 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4335 | if (rc) { | |
b6b38f70 | 4336 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4337 | } else { /* decode response */ |
4338 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4339 | ||
4340 | if (rc || (pSMBr->ByteCount < 18)) | |
4341 | rc = -EIO; /* bad smb */ | |
4342 | else { | |
4343 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 JP |
4344 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
4345 | pSMBr->ByteCount, data_offset); | |
20962438 | 4346 | |
50c2f753 | 4347 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4348 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4349 | FSData->f_bsize = | |
4350 | le16_to_cpu(response_data->BytesPerSector) * | |
4351 | le32_to_cpu(response_data-> | |
4352 | SectorsPerAllocationUnit); | |
4353 | FSData->f_blocks = | |
50c2f753 | 4354 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4355 | FSData->f_bfree = FSData->f_bavail = |
4356 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4357 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4358 | (unsigned long long)FSData->f_blocks, | |
4359 | (unsigned long long)FSData->f_bfree, | |
4360 | FSData->f_bsize); | |
20962438 SF |
4361 | } |
4362 | } | |
4363 | cifs_buf_release(pSMB); | |
4364 | ||
4365 | if (rc == -EAGAIN) | |
4366 | goto oldQFSInfoRetry; | |
4367 | ||
4368 | return rc; | |
4369 | } | |
4370 | ||
1da177e4 | 4371 | int |
737b758c | 4372 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4373 | { |
4374 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4375 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4376 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4377 | FILE_SYSTEM_INFO *response_data; | |
4378 | int rc = 0; | |
4379 | int bytes_returned = 0; | |
4380 | __u16 params, byte_count; | |
4381 | ||
b6b38f70 | 4382 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4383 | QFSInfoRetry: |
4384 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4385 | (void **) &pSMBr); | |
4386 | if (rc) | |
4387 | return rc; | |
4388 | ||
4389 | params = 2; /* level */ | |
4390 | pSMB->TotalDataCount = 0; | |
4391 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4392 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4393 | pSMB->MaxSetupCount = 0; |
4394 | pSMB->Reserved = 0; | |
4395 | pSMB->Flags = 0; | |
4396 | pSMB->Timeout = 0; | |
4397 | pSMB->Reserved2 = 0; | |
4398 | byte_count = params + 1 /* pad */ ; | |
4399 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4400 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4401 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4402 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4403 | pSMB->DataCount = 0; |
4404 | pSMB->DataOffset = 0; | |
4405 | pSMB->SetupCount = 1; | |
4406 | pSMB->Reserved3 = 0; | |
4407 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4408 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4409 | pSMB->hdr.smb_buf_length += byte_count; | |
4410 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4411 | ||
4412 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4413 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4414 | if (rc) { | |
b6b38f70 | 4415 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4416 | } else { /* decode response */ |
50c2f753 | 4417 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4418 | |
20962438 | 4419 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4420 | rc = -EIO; /* bad smb */ |
4421 | else { | |
4422 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4423 | |
4424 | response_data = | |
4425 | (FILE_SYSTEM_INFO | |
4426 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4427 | data_offset); | |
4428 | FSData->f_bsize = | |
4429 | le32_to_cpu(response_data->BytesPerSector) * | |
4430 | le32_to_cpu(response_data-> | |
4431 | SectorsPerAllocationUnit); | |
4432 | FSData->f_blocks = | |
4433 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4434 | FSData->f_bfree = FSData->f_bavail = | |
4435 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4436 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4437 | (unsigned long long)FSData->f_blocks, | |
4438 | (unsigned long long)FSData->f_bfree, | |
4439 | FSData->f_bsize); | |
1da177e4 LT |
4440 | } |
4441 | } | |
4442 | cifs_buf_release(pSMB); | |
4443 | ||
4444 | if (rc == -EAGAIN) | |
4445 | goto QFSInfoRetry; | |
4446 | ||
4447 | return rc; | |
4448 | } | |
4449 | ||
4450 | int | |
737b758c | 4451 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4452 | { |
4453 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4454 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4455 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4456 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4457 | int rc = 0; | |
4458 | int bytes_returned = 0; | |
4459 | __u16 params, byte_count; | |
4460 | ||
b6b38f70 | 4461 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4462 | QFSAttributeRetry: |
4463 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4464 | (void **) &pSMBr); | |
4465 | if (rc) | |
4466 | return rc; | |
4467 | ||
4468 | params = 2; /* level */ | |
4469 | pSMB->TotalDataCount = 0; | |
4470 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4471 | /* BB find exact max SMB PDU from sess structure BB */ |
4472 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4473 | pSMB->MaxSetupCount = 0; |
4474 | pSMB->Reserved = 0; | |
4475 | pSMB->Flags = 0; | |
4476 | pSMB->Timeout = 0; | |
4477 | pSMB->Reserved2 = 0; | |
4478 | byte_count = params + 1 /* pad */ ; | |
4479 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4480 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4481 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4482 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4483 | pSMB->DataCount = 0; |
4484 | pSMB->DataOffset = 0; | |
4485 | pSMB->SetupCount = 1; | |
4486 | pSMB->Reserved3 = 0; | |
4487 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4488 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4489 | pSMB->hdr.smb_buf_length += byte_count; | |
4490 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4491 | ||
4492 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4493 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4494 | if (rc) { | |
b6b38f70 | 4495 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4496 | } else { /* decode response */ |
4497 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4498 | ||
50c2f753 SF |
4499 | if (rc || (pSMBr->ByteCount < 13)) { |
4500 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4501 | rc = -EIO; /* bad smb */ |
4502 | } else { | |
4503 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4504 | response_data = | |
4505 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4506 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4507 | data_offset); | |
4508 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4509 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4510 | } |
4511 | } | |
4512 | cifs_buf_release(pSMB); | |
4513 | ||
4514 | if (rc == -EAGAIN) | |
4515 | goto QFSAttributeRetry; | |
4516 | ||
4517 | return rc; | |
4518 | } | |
4519 | ||
4520 | int | |
737b758c | 4521 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4522 | { |
4523 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4524 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4525 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4526 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4527 | int rc = 0; | |
4528 | int bytes_returned = 0; | |
4529 | __u16 params, byte_count; | |
4530 | ||
b6b38f70 | 4531 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4532 | QFSDeviceRetry: |
4533 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4534 | (void **) &pSMBr); | |
4535 | if (rc) | |
4536 | return rc; | |
4537 | ||
4538 | params = 2; /* level */ | |
4539 | pSMB->TotalDataCount = 0; | |
4540 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4541 | /* BB find exact max SMB PDU from sess structure BB */ |
4542 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4543 | pSMB->MaxSetupCount = 0; |
4544 | pSMB->Reserved = 0; | |
4545 | pSMB->Flags = 0; | |
4546 | pSMB->Timeout = 0; | |
4547 | pSMB->Reserved2 = 0; | |
4548 | byte_count = params + 1 /* pad */ ; | |
4549 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4550 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4551 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4552 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4553 | |
4554 | pSMB->DataCount = 0; | |
4555 | pSMB->DataOffset = 0; | |
4556 | pSMB->SetupCount = 1; | |
4557 | pSMB->Reserved3 = 0; | |
4558 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4559 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4560 | pSMB->hdr.smb_buf_length += byte_count; | |
4561 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4562 | ||
4563 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4564 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4565 | if (rc) { | |
b6b38f70 | 4566 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4567 | } else { /* decode response */ |
4568 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4569 | ||
630f3f0c | 4570 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) |
1da177e4 LT |
4571 | rc = -EIO; /* bad smb */ |
4572 | else { | |
4573 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4574 | response_data = | |
737b758c SF |
4575 | (FILE_SYSTEM_DEVICE_INFO *) |
4576 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4577 | data_offset); |
4578 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4579 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4580 | } |
4581 | } | |
4582 | cifs_buf_release(pSMB); | |
4583 | ||
4584 | if (rc == -EAGAIN) | |
4585 | goto QFSDeviceRetry; | |
4586 | ||
4587 | return rc; | |
4588 | } | |
4589 | ||
4590 | int | |
737b758c | 4591 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4592 | { |
4593 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4594 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4595 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4596 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4597 | int rc = 0; | |
4598 | int bytes_returned = 0; | |
4599 | __u16 params, byte_count; | |
4600 | ||
b6b38f70 | 4601 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 4602 | QFSUnixRetry: |
f569599a JL |
4603 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4604 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4605 | if (rc) |
4606 | return rc; | |
4607 | ||
4608 | params = 2; /* level */ | |
4609 | pSMB->TotalDataCount = 0; | |
4610 | pSMB->DataCount = 0; | |
4611 | pSMB->DataOffset = 0; | |
4612 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4613 | /* BB find exact max SMB PDU from sess structure BB */ |
4614 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4615 | pSMB->MaxSetupCount = 0; |
4616 | pSMB->Reserved = 0; | |
4617 | pSMB->Flags = 0; | |
4618 | pSMB->Timeout = 0; | |
4619 | pSMB->Reserved2 = 0; | |
4620 | byte_count = params + 1 /* pad */ ; | |
4621 | pSMB->ParameterCount = cpu_to_le16(params); | |
4622 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4623 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4624 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4625 | pSMB->SetupCount = 1; |
4626 | pSMB->Reserved3 = 0; | |
4627 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4628 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4629 | pSMB->hdr.smb_buf_length += byte_count; | |
4630 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4631 | ||
4632 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4633 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4634 | if (rc) { | |
b6b38f70 | 4635 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4636 | } else { /* decode response */ |
4637 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4638 | ||
4639 | if (rc || (pSMBr->ByteCount < 13)) { | |
4640 | rc = -EIO; /* bad smb */ | |
4641 | } else { | |
4642 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4643 | response_data = | |
4644 | (FILE_SYSTEM_UNIX_INFO | |
4645 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4646 | data_offset); | |
4647 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4648 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4649 | } |
4650 | } | |
4651 | cifs_buf_release(pSMB); | |
4652 | ||
4653 | if (rc == -EAGAIN) | |
4654 | goto QFSUnixRetry; | |
4655 | ||
4656 | ||
4657 | return rc; | |
4658 | } | |
4659 | ||
ac67055e | 4660 | int |
45abc6ee | 4661 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4662 | { |
4663 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4664 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4665 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4666 | int rc = 0; | |
4667 | int bytes_returned = 0; | |
4668 | __u16 params, param_offset, offset, byte_count; | |
4669 | ||
b6b38f70 | 4670 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4671 | SETFSUnixRetry: |
f26282c9 | 4672 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4673 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4674 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4675 | if (rc) |
4676 | return rc; | |
4677 | ||
4678 | params = 4; /* 2 bytes zero followed by info level. */ | |
4679 | pSMB->MaxSetupCount = 0; | |
4680 | pSMB->Reserved = 0; | |
4681 | pSMB->Flags = 0; | |
4682 | pSMB->Timeout = 0; | |
4683 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4684 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4685 | - 4; | |
ac67055e JA |
4686 | offset = param_offset + params; |
4687 | ||
4688 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4689 | /* BB find exact max SMB PDU from sess structure BB */ |
4690 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4691 | pSMB->SetupCount = 1; |
4692 | pSMB->Reserved3 = 0; | |
4693 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4694 | byte_count = 1 /* pad */ + params + 12; | |
4695 | ||
4696 | pSMB->DataCount = cpu_to_le16(12); | |
4697 | pSMB->ParameterCount = cpu_to_le16(params); | |
4698 | pSMB->TotalDataCount = pSMB->DataCount; | |
4699 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4700 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4701 | pSMB->DataOffset = cpu_to_le16(offset); | |
4702 | ||
4703 | /* Params. */ | |
4704 | pSMB->FileNum = 0; | |
4705 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4706 | ||
4707 | /* Data. */ | |
4708 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4709 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4710 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4711 | ||
4712 | pSMB->hdr.smb_buf_length += byte_count; | |
4713 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4714 | ||
4715 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4716 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4717 | if (rc) { | |
b6b38f70 | 4718 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4719 | } else { /* decode response */ |
4720 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4721 | if (rc) |
ac67055e | 4722 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4723 | } |
4724 | cifs_buf_release(pSMB); | |
4725 | ||
4726 | if (rc == -EAGAIN) | |
4727 | goto SETFSUnixRetry; | |
4728 | ||
4729 | return rc; | |
4730 | } | |
4731 | ||
4732 | ||
1da177e4 LT |
4733 | |
4734 | int | |
4735 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4736 | struct kstatfs *FSData) |
1da177e4 LT |
4737 | { |
4738 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4739 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4740 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4741 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4742 | int rc = 0; | |
4743 | int bytes_returned = 0; | |
4744 | __u16 params, byte_count; | |
4745 | ||
b6b38f70 | 4746 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
4747 | QFSPosixRetry: |
4748 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4749 | (void **) &pSMBr); | |
4750 | if (rc) | |
4751 | return rc; | |
4752 | ||
4753 | params = 2; /* level */ | |
4754 | pSMB->TotalDataCount = 0; | |
4755 | pSMB->DataCount = 0; | |
4756 | pSMB->DataOffset = 0; | |
4757 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4758 | /* BB find exact max SMB PDU from sess structure BB */ |
4759 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4760 | pSMB->MaxSetupCount = 0; |
4761 | pSMB->Reserved = 0; | |
4762 | pSMB->Flags = 0; | |
4763 | pSMB->Timeout = 0; | |
4764 | pSMB->Reserved2 = 0; | |
4765 | byte_count = params + 1 /* pad */ ; | |
4766 | pSMB->ParameterCount = cpu_to_le16(params); | |
4767 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4768 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4769 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4770 | pSMB->SetupCount = 1; |
4771 | pSMB->Reserved3 = 0; | |
4772 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4773 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4774 | pSMB->hdr.smb_buf_length += byte_count; | |
4775 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4776 | ||
4777 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4778 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4779 | if (rc) { | |
b6b38f70 | 4780 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4781 | } else { /* decode response */ |
4782 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4783 | ||
4784 | if (rc || (pSMBr->ByteCount < 13)) { | |
4785 | rc = -EIO; /* bad smb */ | |
4786 | } else { | |
4787 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4788 | response_data = | |
4789 | (FILE_SYSTEM_POSIX_INFO | |
4790 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4791 | data_offset); | |
4792 | FSData->f_bsize = | |
4793 | le32_to_cpu(response_data->BlockSize); | |
4794 | FSData->f_blocks = | |
4795 | le64_to_cpu(response_data->TotalBlocks); | |
4796 | FSData->f_bfree = | |
4797 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4798 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4799 | FSData->f_bavail = FSData->f_bfree; |
4800 | } else { | |
4801 | FSData->f_bavail = | |
50c2f753 | 4802 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4803 | } |
790fe579 | 4804 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4805 | FSData->f_files = |
50c2f753 | 4806 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4807 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4808 | FSData->f_ffree = |
50c2f753 | 4809 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4810 | } |
4811 | } | |
4812 | cifs_buf_release(pSMB); | |
4813 | ||
4814 | if (rc == -EAGAIN) | |
4815 | goto QFSPosixRetry; | |
4816 | ||
4817 | return rc; | |
4818 | } | |
4819 | ||
4820 | ||
50c2f753 SF |
4821 | /* We can not use write of zero bytes trick to |
4822 | set file size due to need for large file support. Also note that | |
4823 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4824 | routine which is only needed to work around a sharing violation bug |
4825 | in Samba which this routine can run into */ | |
4826 | ||
4827 | int | |
4828 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4829 | __u64 size, bool SetAllocation, |
737b758c | 4830 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4831 | { |
4832 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4833 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4834 | struct file_end_of_file_info *parm_data; | |
4835 | int name_len; | |
4836 | int rc = 0; | |
4837 | int bytes_returned = 0; | |
4838 | __u16 params, byte_count, data_count, param_offset, offset; | |
4839 | ||
b6b38f70 | 4840 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
4841 | SetEOFRetry: |
4842 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4843 | (void **) &pSMBr); | |
4844 | if (rc) | |
4845 | return rc; | |
4846 | ||
4847 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4848 | name_len = | |
b1a45695 | 4849 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4850 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4851 | name_len++; /* trailing null */ |
4852 | name_len *= 2; | |
3e87d803 | 4853 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4854 | name_len = strnlen(fileName, PATH_MAX); |
4855 | name_len++; /* trailing null */ | |
4856 | strncpy(pSMB->FileName, fileName, name_len); | |
4857 | } | |
4858 | params = 6 + name_len; | |
26f57364 | 4859 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4860 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4861 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4862 | pSMB->MaxSetupCount = 0; |
4863 | pSMB->Reserved = 0; | |
4864 | pSMB->Flags = 0; | |
4865 | pSMB->Timeout = 0; | |
4866 | pSMB->Reserved2 = 0; | |
4867 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4868 | InformationLevel) - 4; |
1da177e4 | 4869 | offset = param_offset + params; |
790fe579 | 4870 | if (SetAllocation) { |
50c2f753 SF |
4871 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4872 | pSMB->InformationLevel = | |
4873 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4874 | else | |
4875 | pSMB->InformationLevel = | |
4876 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4877 | } else /* Set File Size */ { | |
1da177e4 LT |
4878 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4879 | pSMB->InformationLevel = | |
50c2f753 | 4880 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4881 | else |
4882 | pSMB->InformationLevel = | |
50c2f753 | 4883 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4884 | } |
4885 | ||
4886 | parm_data = | |
4887 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4888 | offset); | |
4889 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4890 | pSMB->DataOffset = cpu_to_le16(offset); | |
4891 | pSMB->SetupCount = 1; | |
4892 | pSMB->Reserved3 = 0; | |
4893 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4894 | byte_count = 3 /* pad */ + params + data_count; | |
4895 | pSMB->DataCount = cpu_to_le16(data_count); | |
4896 | pSMB->TotalDataCount = pSMB->DataCount; | |
4897 | pSMB->ParameterCount = cpu_to_le16(params); | |
4898 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4899 | pSMB->Reserved4 = 0; | |
4900 | pSMB->hdr.smb_buf_length += byte_count; | |
4901 | parm_data->FileSize = cpu_to_le64(size); | |
4902 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4903 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4904 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4905 | if (rc) |
b6b38f70 | 4906 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
4907 | |
4908 | cifs_buf_release(pSMB); | |
4909 | ||
4910 | if (rc == -EAGAIN) | |
4911 | goto SetEOFRetry; | |
4912 | ||
4913 | return rc; | |
4914 | } | |
4915 | ||
4916 | int | |
50c2f753 | 4917 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4918 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4919 | { |
4920 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4921 | struct file_end_of_file_info *parm_data; |
4922 | int rc = 0; | |
1da177e4 LT |
4923 | __u16 params, param_offset, offset, byte_count, count; |
4924 | ||
b6b38f70 JP |
4925 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
4926 | (long long)size); | |
cd63499c SF |
4927 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4928 | ||
1da177e4 LT |
4929 | if (rc) |
4930 | return rc; | |
4931 | ||
4932 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4933 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4934 | |
1da177e4 LT |
4935 | params = 6; |
4936 | pSMB->MaxSetupCount = 0; | |
4937 | pSMB->Reserved = 0; | |
4938 | pSMB->Flags = 0; | |
4939 | pSMB->Timeout = 0; | |
4940 | pSMB->Reserved2 = 0; | |
4941 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4942 | offset = param_offset + params; | |
4943 | ||
1da177e4 LT |
4944 | count = sizeof(struct file_end_of_file_info); |
4945 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4946 | /* BB find exact max SMB PDU from sess structure BB */ |
4947 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4948 | pSMB->SetupCount = 1; |
4949 | pSMB->Reserved3 = 0; | |
4950 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4951 | byte_count = 3 /* pad */ + params + count; | |
4952 | pSMB->DataCount = cpu_to_le16(count); | |
4953 | pSMB->ParameterCount = cpu_to_le16(params); | |
4954 | pSMB->TotalDataCount = pSMB->DataCount; | |
4955 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4956 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4957 | parm_data = | |
50c2f753 SF |
4958 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4959 | + offset); | |
1da177e4 LT |
4960 | pSMB->DataOffset = cpu_to_le16(offset); |
4961 | parm_data->FileSize = cpu_to_le64(size); | |
4962 | pSMB->Fid = fid; | |
790fe579 | 4963 | if (SetAllocation) { |
1da177e4 LT |
4964 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4965 | pSMB->InformationLevel = | |
4966 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4967 | else | |
4968 | pSMB->InformationLevel = | |
4969 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4970 | } else /* Set File Size */ { |
1da177e4 LT |
4971 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4972 | pSMB->InformationLevel = | |
50c2f753 | 4973 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4974 | else |
4975 | pSMB->InformationLevel = | |
50c2f753 | 4976 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4977 | } |
4978 | pSMB->Reserved4 = 0; | |
4979 | pSMB->hdr.smb_buf_length += byte_count; | |
4980 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
133672ef | 4981 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 4982 | if (rc) { |
b6b38f70 | 4983 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
4984 | } |
4985 | ||
50c2f753 | 4986 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4987 | since file handle passed in no longer valid */ |
4988 | ||
4989 | return rc; | |
4990 | } | |
4991 | ||
50c2f753 | 4992 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4993 | an open handle, rather than by pathname - this is awkward due to |
4994 | potential access conflicts on the open, but it is unavoidable for these | |
4995 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4996 | time and resort to the original setpathinfo level which takes the ancient | |
4997 | DOS time format with 2 second granularity */ | |
4998 | int | |
2dd2dfa0 JL |
4999 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
5000 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
5001 | { |
5002 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5003 | char *data_offset; |
5004 | int rc = 0; | |
1da177e4 LT |
5005 | __u16 params, param_offset, offset, byte_count, count; |
5006 | ||
b6b38f70 | 5007 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5008 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5009 | ||
1da177e4 LT |
5010 | if (rc) |
5011 | return rc; | |
5012 | ||
2dd2dfa0 JL |
5013 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5014 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5015 | |
1da177e4 LT |
5016 | params = 6; |
5017 | pSMB->MaxSetupCount = 0; | |
5018 | pSMB->Reserved = 0; | |
5019 | pSMB->Flags = 0; | |
5020 | pSMB->Timeout = 0; | |
5021 | pSMB->Reserved2 = 0; | |
5022 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5023 | offset = param_offset + params; | |
5024 | ||
50c2f753 | 5025 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 5026 | |
26f57364 | 5027 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5028 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5029 | /* BB find max SMB PDU from sess */ |
5030 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5031 | pSMB->SetupCount = 1; |
5032 | pSMB->Reserved3 = 0; | |
5033 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5034 | byte_count = 3 /* pad */ + params + count; | |
5035 | pSMB->DataCount = cpu_to_le16(count); | |
5036 | pSMB->ParameterCount = cpu_to_le16(params); | |
5037 | pSMB->TotalDataCount = pSMB->DataCount; | |
5038 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5039 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5040 | pSMB->DataOffset = cpu_to_le16(offset); | |
5041 | pSMB->Fid = fid; | |
5042 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5043 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5044 | else | |
5045 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5046 | pSMB->Reserved4 = 0; | |
5047 | pSMB->hdr.smb_buf_length += byte_count; | |
5048 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 5049 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 5050 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 5051 | if (rc) |
b6b38f70 | 5052 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5053 | |
50c2f753 | 5054 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5055 | since file handle passed in no longer valid */ |
5056 | ||
5057 | return rc; | |
5058 | } | |
5059 | ||
6d22f098 JL |
5060 | int |
5061 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
5062 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
5063 | { | |
5064 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5065 | char *data_offset; | |
5066 | int rc = 0; | |
5067 | __u16 params, param_offset, offset, byte_count, count; | |
5068 | ||
b6b38f70 | 5069 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5070 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5071 | ||
5072 | if (rc) | |
5073 | return rc; | |
5074 | ||
5075 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5076 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5077 | ||
5078 | params = 6; | |
5079 | pSMB->MaxSetupCount = 0; | |
5080 | pSMB->Reserved = 0; | |
5081 | pSMB->Flags = 0; | |
5082 | pSMB->Timeout = 0; | |
5083 | pSMB->Reserved2 = 0; | |
5084 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5085 | offset = param_offset + params; | |
5086 | ||
5087 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5088 | ||
5089 | count = 1; | |
5090 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5091 | /* BB find max SMB PDU from sess */ | |
5092 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5093 | pSMB->SetupCount = 1; | |
5094 | pSMB->Reserved3 = 0; | |
5095 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5096 | byte_count = 3 /* pad */ + params + count; | |
5097 | pSMB->DataCount = cpu_to_le16(count); | |
5098 | pSMB->ParameterCount = cpu_to_le16(params); | |
5099 | pSMB->TotalDataCount = pSMB->DataCount; | |
5100 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5101 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5102 | pSMB->DataOffset = cpu_to_le16(offset); | |
5103 | pSMB->Fid = fid; | |
5104 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5105 | pSMB->Reserved4 = 0; | |
5106 | pSMB->hdr.smb_buf_length += byte_count; | |
5107 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5108 | *data_offset = delete_file ? 1 : 0; | |
5109 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5110 | if (rc) | |
b6b38f70 | 5111 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5112 | |
5113 | return rc; | |
5114 | } | |
1da177e4 LT |
5115 | |
5116 | int | |
6fc000e5 JL |
5117 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
5118 | const char *fileName, const FILE_BASIC_INFO *data, | |
5119 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5120 | { |
5121 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5122 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5123 | int name_len; | |
5124 | int rc = 0; | |
5125 | int bytes_returned = 0; | |
5126 | char *data_offset; | |
5127 | __u16 params, param_offset, offset, byte_count, count; | |
5128 | ||
b6b38f70 | 5129 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5130 | |
5131 | SetTimesRetry: | |
5132 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5133 | (void **) &pSMBr); | |
5134 | if (rc) | |
5135 | return rc; | |
5136 | ||
5137 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5138 | name_len = | |
b1a45695 | 5139 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5140 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5141 | name_len++; /* trailing null */ |
5142 | name_len *= 2; | |
50c2f753 | 5143 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5144 | name_len = strnlen(fileName, PATH_MAX); |
5145 | name_len++; /* trailing null */ | |
5146 | strncpy(pSMB->FileName, fileName, name_len); | |
5147 | } | |
5148 | ||
5149 | params = 6 + name_len; | |
26f57364 | 5150 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5151 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5152 | /* BB find max SMB PDU from sess structure BB */ |
5153 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5154 | pSMB->MaxSetupCount = 0; |
5155 | pSMB->Reserved = 0; | |
5156 | pSMB->Flags = 0; | |
5157 | pSMB->Timeout = 0; | |
5158 | pSMB->Reserved2 = 0; | |
5159 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5160 | InformationLevel) - 4; |
1da177e4 LT |
5161 | offset = param_offset + params; |
5162 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5163 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5164 | pSMB->DataOffset = cpu_to_le16(offset); | |
5165 | pSMB->SetupCount = 1; | |
5166 | pSMB->Reserved3 = 0; | |
5167 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5168 | byte_count = 3 /* pad */ + params + count; | |
5169 | ||
5170 | pSMB->DataCount = cpu_to_le16(count); | |
5171 | pSMB->ParameterCount = cpu_to_le16(params); | |
5172 | pSMB->TotalDataCount = pSMB->DataCount; | |
5173 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5174 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5175 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5176 | else | |
5177 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5178 | pSMB->Reserved4 = 0; | |
5179 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 5180 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5181 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5182 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5183 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5184 | if (rc) |
b6b38f70 | 5185 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5186 | |
5187 | cifs_buf_release(pSMB); | |
5188 | ||
5189 | if (rc == -EAGAIN) | |
5190 | goto SetTimesRetry; | |
5191 | ||
5192 | return rc; | |
5193 | } | |
5194 | ||
5195 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5196 | /* Can be used to set attributes */ | |
5197 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5198 | handling it anyway and NT4 was what we thought it would be needed for | |
5199 | Do not delete it until we prove whether needed for Win9x though */ | |
5200 | int | |
5201 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5202 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5203 | { | |
5204 | SETATTR_REQ *pSMB = NULL; | |
5205 | SETATTR_RSP *pSMBr = NULL; | |
5206 | int rc = 0; | |
5207 | int bytes_returned; | |
5208 | int name_len; | |
5209 | ||
b6b38f70 | 5210 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5211 | |
5212 | SetAttrLgcyRetry: | |
5213 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5214 | (void **) &pSMBr); | |
5215 | if (rc) | |
5216 | return rc; | |
5217 | ||
5218 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5219 | name_len = | |
50c2f753 | 5220 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5221 | PATH_MAX, nls_codepage); |
5222 | name_len++; /* trailing null */ | |
5223 | name_len *= 2; | |
50c2f753 | 5224 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5225 | name_len = strnlen(fileName, PATH_MAX); |
5226 | name_len++; /* trailing null */ | |
5227 | strncpy(pSMB->fileName, fileName, name_len); | |
5228 | } | |
5229 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5230 | pSMB->BufferFormat = 0x04; | |
5231 | pSMB->hdr.smb_buf_length += name_len + 1; | |
5232 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
5233 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5234 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5235 | if (rc) |
b6b38f70 | 5236 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5237 | |
5238 | cifs_buf_release(pSMB); | |
5239 | ||
5240 | if (rc == -EAGAIN) | |
5241 | goto SetAttrLgcyRetry; | |
5242 | ||
5243 | return rc; | |
5244 | } | |
5245 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5246 | ||
654cf14a JL |
5247 | static void |
5248 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5249 | const struct cifs_unix_set_info_args *args) | |
5250 | { | |
5251 | u64 mode = args->mode; | |
5252 | ||
5253 | /* | |
5254 | * Samba server ignores set of file size to zero due to bugs in some | |
5255 | * older clients, but we should be precise - we use SetFileSize to | |
5256 | * set file size and do not want to truncate file size to zero | |
25985edc | 5257 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5258 | * zero instead of -1 here |
5259 | */ | |
5260 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5261 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5262 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5263 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5264 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5265 | data_offset->Uid = cpu_to_le64(args->uid); | |
5266 | data_offset->Gid = cpu_to_le64(args->gid); | |
5267 | /* better to leave device as zero when it is */ | |
5268 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5269 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5270 | data_offset->Permissions = cpu_to_le64(mode); | |
5271 | ||
5272 | if (S_ISREG(mode)) | |
5273 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5274 | else if (S_ISDIR(mode)) | |
5275 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5276 | else if (S_ISLNK(mode)) | |
5277 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5278 | else if (S_ISCHR(mode)) | |
5279 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5280 | else if (S_ISBLK(mode)) | |
5281 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5282 | else if (S_ISFIFO(mode)) | |
5283 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5284 | else if (S_ISSOCK(mode)) | |
5285 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5286 | } | |
5287 | ||
3bbeeb3c JL |
5288 | int |
5289 | CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon, | |
5290 | const struct cifs_unix_set_info_args *args, | |
5291 | u16 fid, u32 pid_of_opener) | |
5292 | { | |
5293 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5294 | FILE_UNIX_BASIC_INFO *data_offset; | |
5295 | int rc = 0; | |
5296 | u16 params, param_offset, offset, byte_count, count; | |
5297 | ||
b6b38f70 | 5298 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5299 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5300 | ||
5301 | if (rc) | |
5302 | return rc; | |
5303 | ||
5304 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5305 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5306 | ||
5307 | params = 6; | |
5308 | pSMB->MaxSetupCount = 0; | |
5309 | pSMB->Reserved = 0; | |
5310 | pSMB->Flags = 0; | |
5311 | pSMB->Timeout = 0; | |
5312 | pSMB->Reserved2 = 0; | |
5313 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5314 | offset = param_offset + params; | |
5315 | ||
5316 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5317 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5318 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5319 | ||
5320 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5321 | /* BB find max SMB PDU from sess */ | |
5322 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5323 | pSMB->SetupCount = 1; | |
5324 | pSMB->Reserved3 = 0; | |
5325 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5326 | byte_count = 3 /* pad */ + params + count; | |
5327 | pSMB->DataCount = cpu_to_le16(count); | |
5328 | pSMB->ParameterCount = cpu_to_le16(params); | |
5329 | pSMB->TotalDataCount = pSMB->DataCount; | |
5330 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5331 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5332 | pSMB->DataOffset = cpu_to_le16(offset); | |
5333 | pSMB->Fid = fid; | |
5334 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5335 | pSMB->Reserved4 = 0; | |
5336 | pSMB->hdr.smb_buf_length += byte_count; | |
5337 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5338 | ||
5339 | cifs_fill_unix_set_info(data_offset, args); | |
5340 | ||
5341 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5342 | if (rc) | |
b6b38f70 | 5343 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5344 | |
5345 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5346 | since file handle passed in no longer valid */ | |
5347 | ||
5348 | return rc; | |
5349 | } | |
5350 | ||
1da177e4 | 5351 | int |
01ea95e3 JL |
5352 | CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
5353 | const struct cifs_unix_set_info_args *args, | |
5354 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5355 | { |
5356 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5357 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5358 | int name_len; | |
5359 | int rc = 0; | |
5360 | int bytes_returned = 0; | |
5361 | FILE_UNIX_BASIC_INFO *data_offset; | |
5362 | __u16 params, param_offset, offset, count, byte_count; | |
5363 | ||
b6b38f70 | 5364 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5365 | setPermsRetry: |
5366 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5367 | (void **) &pSMBr); | |
5368 | if (rc) | |
5369 | return rc; | |
5370 | ||
5371 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5372 | name_len = | |
50c2f753 | 5373 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5374 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5375 | name_len++; /* trailing null */ |
5376 | name_len *= 2; | |
3e87d803 | 5377 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5378 | name_len = strnlen(fileName, PATH_MAX); |
5379 | name_len++; /* trailing null */ | |
5380 | strncpy(pSMB->FileName, fileName, name_len); | |
5381 | } | |
5382 | ||
5383 | params = 6 + name_len; | |
26f57364 | 5384 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5385 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5386 | /* BB find max SMB PDU from sess structure BB */ |
5387 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5388 | pSMB->MaxSetupCount = 0; |
5389 | pSMB->Reserved = 0; | |
5390 | pSMB->Flags = 0; | |
5391 | pSMB->Timeout = 0; | |
5392 | pSMB->Reserved2 = 0; | |
5393 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5394 | InformationLevel) - 4; |
1da177e4 LT |
5395 | offset = param_offset + params; |
5396 | data_offset = | |
5397 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5398 | offset); | |
5399 | memset(data_offset, 0, count); | |
5400 | pSMB->DataOffset = cpu_to_le16(offset); | |
5401 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5402 | pSMB->SetupCount = 1; | |
5403 | pSMB->Reserved3 = 0; | |
5404 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5405 | byte_count = 3 /* pad */ + params + count; | |
5406 | pSMB->ParameterCount = cpu_to_le16(params); | |
5407 | pSMB->DataCount = cpu_to_le16(count); | |
5408 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5409 | pSMB->TotalDataCount = pSMB->DataCount; | |
5410 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5411 | pSMB->Reserved4 = 0; | |
5412 | pSMB->hdr.smb_buf_length += byte_count; | |
1da177e4 | 5413 | |
654cf14a | 5414 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5415 | |
5416 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5417 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5418 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5419 | if (rc) |
b6b38f70 | 5420 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5421 | |
0d817bc0 | 5422 | cifs_buf_release(pSMB); |
1da177e4 LT |
5423 | if (rc == -EAGAIN) |
5424 | goto setPermsRetry; | |
5425 | return rc; | |
5426 | } | |
5427 | ||
1da177e4 | 5428 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5429 | /* |
5430 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5431 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5432 | * it looks for that attribute name and stuffs that value into the EAData | |
5433 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5434 | * buffer. In both cases, the return value is either the length of the | |
5435 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5436 | * the data isn't copied to it, but the length is returned. | |
5437 | */ | |
1da177e4 LT |
5438 | ssize_t |
5439 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
31c0519f JL |
5440 | const unsigned char *searchName, const unsigned char *ea_name, |
5441 | char *EAData, size_t buf_size, | |
5442 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5443 | { |
5444 | /* BB assumes one setup word */ | |
5445 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5446 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5447 | int rc = 0; | |
5448 | int bytes_returned; | |
6e462b9f | 5449 | int list_len; |
f0d3868b | 5450 | struct fealist *ea_response_data; |
50c2f753 SF |
5451 | struct fea *temp_fea; |
5452 | char *temp_ptr; | |
0cd126b5 | 5453 | char *end_of_smb; |
f0d3868b | 5454 | __u16 params, byte_count, data_offset; |
1da177e4 | 5455 | |
b6b38f70 | 5456 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5457 | QAllEAsRetry: |
5458 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5459 | (void **) &pSMBr); | |
5460 | if (rc) | |
5461 | return rc; | |
5462 | ||
5463 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5464 | list_len = |
50c2f753 | 5465 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5466 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5467 | list_len++; /* trailing null */ |
5468 | list_len *= 2; | |
1da177e4 | 5469 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5470 | list_len = strnlen(searchName, PATH_MAX); |
5471 | list_len++; /* trailing null */ | |
5472 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5473 | } |
5474 | ||
6e462b9f | 5475 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5476 | pSMB->TotalDataCount = 0; |
5477 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5478 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5479 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5480 | pSMB->MaxSetupCount = 0; |
5481 | pSMB->Reserved = 0; | |
5482 | pSMB->Flags = 0; | |
5483 | pSMB->Timeout = 0; | |
5484 | pSMB->Reserved2 = 0; | |
5485 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5486 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5487 | pSMB->DataCount = 0; |
5488 | pSMB->DataOffset = 0; | |
5489 | pSMB->SetupCount = 1; | |
5490 | pSMB->Reserved3 = 0; | |
5491 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5492 | byte_count = params + 1 /* pad */ ; | |
5493 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5494 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5495 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5496 | pSMB->Reserved4 = 0; | |
5497 | pSMB->hdr.smb_buf_length += byte_count; | |
5498 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5499 | ||
5500 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5501 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5502 | if (rc) { | |
b6b38f70 | 5503 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5504 | goto QAllEAsOut; |
5505 | } | |
1da177e4 | 5506 | |
f0d3868b JL |
5507 | |
5508 | /* BB also check enough total bytes returned */ | |
5509 | /* BB we need to improve the validity checking | |
5510 | of these trans2 responses */ | |
5511 | ||
5512 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5513 | if (rc || (pSMBr->ByteCount < 4)) { | |
5514 | rc = -EIO; /* bad smb */ | |
5515 | goto QAllEAsOut; | |
5516 | } | |
5517 | ||
5518 | /* check that length of list is not more than bcc */ | |
5519 | /* check that each entry does not go beyond length | |
5520 | of list */ | |
5521 | /* check that each element of each entry does not | |
5522 | go beyond end of list */ | |
5523 | /* validate_trans2_offsets() */ | |
5524 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5525 | ||
5526 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5527 | ea_response_data = (struct fealist *) | |
5528 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5529 | ||
6e462b9f | 5530 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5531 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5532 | if (list_len <= 8) { |
b6b38f70 | 5533 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5534 | goto QAllEAsOut; |
5535 | } | |
5536 | ||
0cd126b5 | 5537 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5538 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5539 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 5540 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5541 | rc = -EIO; |
5542 | goto QAllEAsOut; | |
5543 | } | |
5544 | ||
f0d3868b | 5545 | /* account for ea list len */ |
6e462b9f | 5546 | list_len -= 4; |
f0d3868b JL |
5547 | temp_fea = ea_response_data->list; |
5548 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5549 | while (list_len > 0) { |
122ca007 | 5550 | unsigned int name_len; |
f0d3868b | 5551 | __u16 value_len; |
0cd126b5 | 5552 | |
6e462b9f | 5553 | list_len -= 4; |
f0d3868b | 5554 | temp_ptr += 4; |
0cd126b5 JL |
5555 | /* make sure we can read name_len and value_len */ |
5556 | if (list_len < 0) { | |
b6b38f70 | 5557 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5558 | rc = -EIO; |
5559 | goto QAllEAsOut; | |
5560 | } | |
5561 | ||
5562 | name_len = temp_fea->name_len; | |
5563 | value_len = le16_to_cpu(temp_fea->value_len); | |
5564 | list_len -= name_len + 1 + value_len; | |
5565 | if (list_len < 0) { | |
b6b38f70 | 5566 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5567 | rc = -EIO; |
5568 | goto QAllEAsOut; | |
5569 | } | |
5570 | ||
31c0519f JL |
5571 | if (ea_name) { |
5572 | if (strncmp(ea_name, temp_ptr, name_len) == 0) { | |
5573 | temp_ptr += name_len + 1; | |
5574 | rc = value_len; | |
5575 | if (buf_size == 0) | |
5576 | goto QAllEAsOut; | |
5577 | if ((size_t)value_len > buf_size) { | |
5578 | rc = -ERANGE; | |
5579 | goto QAllEAsOut; | |
5580 | } | |
5581 | memcpy(EAData, temp_ptr, value_len); | |
5582 | goto QAllEAsOut; | |
5583 | } | |
f0d3868b | 5584 | } else { |
31c0519f JL |
5585 | /* account for prefix user. and trailing null */ |
5586 | rc += (5 + 1 + name_len); | |
5587 | if (rc < (int) buf_size) { | |
5588 | memcpy(EAData, "user.", 5); | |
5589 | EAData += 5; | |
5590 | memcpy(EAData, temp_ptr, name_len); | |
5591 | EAData += name_len; | |
5592 | /* null terminate name */ | |
5593 | *EAData = 0; | |
5594 | ++EAData; | |
5595 | } else if (buf_size == 0) { | |
5596 | /* skip copy - calc size only */ | |
5597 | } else { | |
5598 | /* stop before overrun buffer */ | |
5599 | rc = -ERANGE; | |
5600 | break; | |
5601 | } | |
1da177e4 | 5602 | } |
0cd126b5 | 5603 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5604 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5605 | } |
f0d3868b | 5606 | |
31c0519f JL |
5607 | /* didn't find the named attribute */ |
5608 | if (ea_name) | |
5609 | rc = -ENODATA; | |
5610 | ||
f0d3868b | 5611 | QAllEAsOut: |
0d817bc0 | 5612 | cifs_buf_release(pSMB); |
1da177e4 LT |
5613 | if (rc == -EAGAIN) |
5614 | goto QAllEAsRetry; | |
5615 | ||
5616 | return (ssize_t)rc; | |
5617 | } | |
5618 | ||
1da177e4 LT |
5619 | int |
5620 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5621 | const char *ea_name, const void *ea_value, |
5622 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5623 | int remap) | |
1da177e4 LT |
5624 | { |
5625 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5626 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5627 | struct fealist *parm_data; | |
5628 | int name_len; | |
5629 | int rc = 0; | |
5630 | int bytes_returned = 0; | |
5631 | __u16 params, param_offset, byte_count, offset, count; | |
5632 | ||
b6b38f70 | 5633 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5634 | SetEARetry: |
5635 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5636 | (void **) &pSMBr); | |
5637 | if (rc) | |
5638 | return rc; | |
5639 | ||
5640 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5641 | name_len = | |
50c2f753 | 5642 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5643 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5644 | name_len++; /* trailing null */ |
5645 | name_len *= 2; | |
50c2f753 | 5646 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5647 | name_len = strnlen(fileName, PATH_MAX); |
5648 | name_len++; /* trailing null */ | |
5649 | strncpy(pSMB->FileName, fileName, name_len); | |
5650 | } | |
5651 | ||
5652 | params = 6 + name_len; | |
5653 | ||
5654 | /* done calculating parms using name_len of file name, | |
5655 | now use name_len to calculate length of ea name | |
5656 | we are going to create in the inode xattrs */ | |
790fe579 | 5657 | if (ea_name == NULL) |
1da177e4 LT |
5658 | name_len = 0; |
5659 | else | |
50c2f753 | 5660 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5661 | |
dae5dbdb | 5662 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5663 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5664 | /* BB find max SMB PDU from sess */ |
5665 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5666 | pSMB->MaxSetupCount = 0; |
5667 | pSMB->Reserved = 0; | |
5668 | pSMB->Flags = 0; | |
5669 | pSMB->Timeout = 0; | |
5670 | pSMB->Reserved2 = 0; | |
5671 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5672 | InformationLevel) - 4; |
1da177e4 LT |
5673 | offset = param_offset + params; |
5674 | pSMB->InformationLevel = | |
5675 | cpu_to_le16(SMB_SET_FILE_EA); | |
5676 | ||
5677 | parm_data = | |
5678 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5679 | offset); | |
5680 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5681 | pSMB->DataOffset = cpu_to_le16(offset); | |
5682 | pSMB->SetupCount = 1; | |
5683 | pSMB->Reserved3 = 0; | |
5684 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5685 | byte_count = 3 /* pad */ + params + count; | |
5686 | pSMB->DataCount = cpu_to_le16(count); | |
5687 | parm_data->list_len = cpu_to_le32(count); | |
5688 | parm_data->list[0].EA_flags = 0; | |
5689 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5690 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5691 | /* EA names are always ASCII */ |
790fe579 | 5692 | if (ea_name) |
50c2f753 | 5693 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5694 | parm_data->list[0].name[name_len] = 0; |
5695 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5696 | /* caller ensures that ea_value_len is less than 64K but | |
5697 | we need to ensure that it fits within the smb */ | |
5698 | ||
50c2f753 SF |
5699 | /*BB add length check to see if it would fit in |
5700 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5701 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5702 | if (ea_value_len) | |
50c2f753 SF |
5703 | memcpy(parm_data->list[0].name+name_len+1, |
5704 | ea_value, ea_value_len); | |
1da177e4 LT |
5705 | |
5706 | pSMB->TotalDataCount = pSMB->DataCount; | |
5707 | pSMB->ParameterCount = cpu_to_le16(params); | |
5708 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5709 | pSMB->Reserved4 = 0; | |
5710 | pSMB->hdr.smb_buf_length += byte_count; | |
5711 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5712 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5713 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5714 | if (rc) |
b6b38f70 | 5715 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5716 | |
5717 | cifs_buf_release(pSMB); | |
5718 | ||
5719 | if (rc == -EAGAIN) | |
5720 | goto SetEARetry; | |
5721 | ||
5722 | return rc; | |
5723 | } | |
1da177e4 | 5724 | #endif |
0eff0e26 SF |
5725 | |
5726 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
5727 | /* | |
5728 | * Years ago the kernel added a "dnotify" function for Samba server, | |
5729 | * to allow network clients (such as Windows) to display updated | |
5730 | * lists of files in directory listings automatically when | |
5731 | * files are added by one user when another user has the | |
5732 | * same directory open on their desktop. The Linux cifs kernel | |
5733 | * client hooked into the kernel side of this interface for | |
5734 | * the same reason, but ironically when the VFS moved from | |
5735 | * "dnotify" to "inotify" it became harder to plug in Linux | |
5736 | * network file system clients (the most obvious use case | |
5737 | * for notify interfaces is when multiple users can update | |
5738 | * the contents of the same directory - exactly what network | |
5739 | * file systems can do) although the server (Samba) could | |
5740 | * still use it. For the short term we leave the worker | |
5741 | * function ifdeffed out (below) until inotify is fixed | |
5742 | * in the VFS to make it easier to plug in network file | |
5743 | * system clients. If inotify turns out to be permanently | |
5744 | * incompatible for network fs clients, we could instead simply | |
5745 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
5746 | */ | |
5747 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, | |
5748 | const int notify_subdirs, const __u16 netfid, | |
5749 | __u32 filter, struct file *pfile, int multishot, | |
5750 | const struct nls_table *nls_codepage) | |
5751 | { | |
5752 | int rc = 0; | |
5753 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
5754 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
5755 | struct dir_notify_req *dnotify_req; | |
5756 | int bytes_returned; | |
5757 | ||
5758 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
5759 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
5760 | (void **) &pSMBr); | |
5761 | if (rc) | |
5762 | return rc; | |
5763 | ||
5764 | pSMB->TotalParameterCount = 0 ; | |
5765 | pSMB->TotalDataCount = 0; | |
5766 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5767 | /* BB find exact data count max from sess structure BB */ | |
5768 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
5769 | /* BB VERIFY verify which is correct for above BB */ | |
5770 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5771 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5772 | ||
5773 | pSMB->MaxSetupCount = 4; | |
5774 | pSMB->Reserved = 0; | |
5775 | pSMB->ParameterOffset = 0; | |
5776 | pSMB->DataCount = 0; | |
5777 | pSMB->DataOffset = 0; | |
5778 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5779 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5780 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5781 | if (notify_subdirs) | |
5782 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
5783 | pSMB->Reserved2 = 0; | |
5784 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5785 | pSMB->Fid = netfid; /* file handle always le */ | |
5786 | pSMB->ByteCount = 0; | |
5787 | ||
5788 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5789 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
5790 | CIFS_ASYNC_OP); | |
5791 | if (rc) { | |
5792 | cFYI(1, "Error in Notify = %d", rc); | |
5793 | } else { | |
5794 | /* Add file to outstanding requests */ | |
5795 | /* BB change to kmem cache alloc */ | |
5796 | dnotify_req = kmalloc( | |
5797 | sizeof(struct dir_notify_req), | |
5798 | GFP_KERNEL); | |
5799 | if (dnotify_req) { | |
5800 | dnotify_req->Pid = pSMB->hdr.Pid; | |
5801 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5802 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5803 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5804 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5805 | dnotify_req->netfid = netfid; | |
5806 | dnotify_req->pfile = pfile; | |
5807 | dnotify_req->filter = filter; | |
5808 | dnotify_req->multishot = multishot; | |
5809 | spin_lock(&GlobalMid_Lock); | |
5810 | list_add_tail(&dnotify_req->lhead, | |
5811 | &GlobalDnotifyReqList); | |
5812 | spin_unlock(&GlobalMid_Lock); | |
5813 | } else | |
5814 | rc = -ENOMEM; | |
5815 | } | |
5816 | cifs_buf_release(pSMB); | |
5817 | return rc; | |
5818 | } | |
5819 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |