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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 | |
be8e3b00 SF |
361 | static inline void inc_rfc1001_len(void *pSMB, int count) |
362 | { | |
363 | struct smb_hdr *hdr = (struct smb_hdr *)pSMB; | |
364 | ||
365 | be32_add_cpu(&hdr->smb_buf_length, count); | |
366 | } | |
367 | ||
1da177e4 LT |
368 | int |
369 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
370 | { | |
371 | NEGOTIATE_REQ *pSMB; | |
372 | NEGOTIATE_RSP *pSMBr; | |
373 | int rc = 0; | |
374 | int bytes_returned; | |
3979877e | 375 | int i; |
50c2f753 | 376 | struct TCP_Server_Info *server; |
1da177e4 | 377 | u16 count; |
750d1151 | 378 | unsigned int secFlags; |
1da177e4 | 379 | |
790fe579 | 380 | if (ses->server) |
1da177e4 LT |
381 | server = ses->server; |
382 | else { | |
383 | rc = -EIO; | |
384 | return rc; | |
385 | } | |
386 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
387 | (void **) &pSMB, (void **) &pSMBr); | |
388 | if (rc) | |
389 | return rc; | |
750d1151 SF |
390 | |
391 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 392 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 393 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 394 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 395 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 396 | |
b6b38f70 | 397 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 398 | |
1982c344 | 399 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 400 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 401 | |
100c1ddc | 402 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 403 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 404 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 405 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 406 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 407 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
408 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
409 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 410 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
411 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
412 | } | |
50c2f753 | 413 | |
3979877e | 414 | count = 0; |
50c2f753 | 415 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
416 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
417 | count += strlen(protocols[i].name) + 1; | |
418 | /* null at end of source and target buffers anyway */ | |
419 | } | |
be8e3b00 | 420 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
421 | pSMB->ByteCount = cpu_to_le16(count); |
422 | ||
423 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
424 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 425 | if (rc != 0) |
254e55ed SF |
426 | goto neg_err_exit; |
427 | ||
9bf67e51 JL |
428 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
429 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 430 | /* Check wct = 1 error case */ |
9bf67e51 | 431 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 432 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 433 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
434 | could not negotiate a common dialect */ |
435 | rc = -EOPNOTSUPP; | |
436 | goto neg_err_exit; | |
50c2f753 | 437 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 438 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
439 | && ((server->dialect == LANMAN_PROT) |
440 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 441 | __s16 tmp; |
50c2f753 | 442 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 443 | |
790fe579 | 444 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 445 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
446 | server->secType = LANMAN; |
447 | else { | |
b6b38f70 JP |
448 | cERROR(1, "mount failed weak security disabled" |
449 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
450 | rc = -EOPNOTSUPP; |
451 | goto neg_err_exit; | |
50c2f753 | 452 | } |
254e55ed SF |
453 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
454 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
455 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 456 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 457 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
458 | /* even though we do not use raw we might as well set this |
459 | accurately, in case we ever find a need for it */ | |
790fe579 | 460 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 461 | server->max_rw = 0xFF00; |
254e55ed SF |
462 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
463 | } else { | |
eca6acf9 | 464 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
465 | server->capabilities = CAP_MPX_MODE; |
466 | } | |
b815f1e5 | 467 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 468 | if (tmp == -1) { |
25ee4a98 SF |
469 | /* OS/2 often does not set timezone therefore |
470 | * we must use server time to calc time zone. | |
b815f1e5 SF |
471 | * Could deviate slightly from the right zone. |
472 | * Smallest defined timezone difference is 15 minutes | |
473 | * (i.e. Nepal). Rounding up/down is done to match | |
474 | * this requirement. | |
25ee4a98 | 475 | */ |
b815f1e5 | 476 | int val, seconds, remain, result; |
25ee4a98 SF |
477 | struct timespec ts, utc; |
478 | utc = CURRENT_TIME; | |
c4a2c08d JL |
479 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
480 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 481 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 482 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 483 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 484 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 485 | seconds = abs(val); |
947a5067 | 486 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 487 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 488 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 489 | result += MIN_TZ_ADJ; |
790fe579 | 490 | if (val < 0) |
ad7a2926 | 491 | result = -result; |
b815f1e5 | 492 | server->timeAdj = result; |
25ee4a98 | 493 | } else { |
b815f1e5 SF |
494 | server->timeAdj = (int)tmp; |
495 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 496 | } |
b6b38f70 | 497 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 498 | |
3979877e | 499 | |
254e55ed | 500 | /* BB get server time for time conversions and add |
50c2f753 | 501 | code to use it and timezone since this is not UTC */ |
3979877e | 502 | |
50c2f753 | 503 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 504 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 505 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed SF |
506 | CIFS_CRYPTO_KEY_SIZE); |
507 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
508 | rc = -EIO; /* need cryptkey unless plain text */ | |
509 | goto neg_err_exit; | |
510 | } | |
3979877e | 511 | |
f19159dc | 512 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
513 | /* we will not end up setting signing flags - as no signing |
514 | was in LANMAN and server did not return the flags on */ | |
515 | goto signing_check; | |
7c7b25bc | 516 | #else /* weak security disabled */ |
790fe579 | 517 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
518 | cERROR(1, "mount failed, cifs module not built " |
519 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 520 | rc = -EOPNOTSUPP; |
7c7b25bc | 521 | #endif /* WEAK_PW_HASH */ |
254e55ed | 522 | goto neg_err_exit; |
790fe579 | 523 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
524 | /* unknown wct */ |
525 | rc = -EOPNOTSUPP; | |
526 | goto neg_err_exit; | |
527 | } | |
528 | /* else wct == 17 NTLM */ | |
529 | server->secMode = pSMBr->SecurityMode; | |
790fe579 | 530 | if ((server->secMode & SECMODE_USER) == 0) |
b6b38f70 | 531 | cFYI(1, "share mode security"); |
bdc4bf6e | 532 | |
790fe579 | 533 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 534 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 535 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 536 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
537 | cERROR(1, "Server requests plain text password" |
538 | " but client support disabled"); | |
9312f675 | 539 | |
790fe579 | 540 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 541 | server->secType = NTLMv2; |
790fe579 | 542 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 543 | server->secType = NTLM; |
790fe579 | 544 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 545 | server->secType = NTLMv2; |
a013689d SF |
546 | else if (secFlags & CIFSSEC_MAY_KRB5) |
547 | server->secType = Kerberos; | |
ac683924 | 548 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 549 | server->secType = RawNTLMSSP; |
a013689d SF |
550 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
551 | server->secType = LANMAN; | |
a013689d SF |
552 | else { |
553 | rc = -EOPNOTSUPP; | |
b6b38f70 | 554 | cERROR(1, "Invalid security type"); |
a013689d SF |
555 | goto neg_err_exit; |
556 | } | |
557 | /* else ... any others ...? */ | |
254e55ed SF |
558 | |
559 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
560 | little endian */ | |
561 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
562 | /* probably no need to store and check maxvcs */ | |
563 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 564 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 565 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 566 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 567 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
568 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
569 | server->timeAdj *= 60; | |
254e55ed | 570 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 571 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed SF |
572 | CIFS_CRYPTO_KEY_SIZE); |
573 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
574 | && (pSMBr->EncryptionKeyLength == 0)) { | |
575 | /* decode security blob */ | |
576 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
577 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
578 | goto neg_err_exit; | |
579 | } | |
1da177e4 | 580 | |
254e55ed SF |
581 | /* BB might be helpful to save off the domain of server here */ |
582 | ||
50c2f753 | 583 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed | 584 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
820a803f | 585 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 586 | if (count < 16) { |
254e55ed | 587 | rc = -EIO; |
e187e44e JL |
588 | goto neg_err_exit; |
589 | } | |
3f9bcca7 | 590 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 591 | if (server->srv_count > 1) { |
3f9bcca7 | 592 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
593 | if (memcmp(server->server_GUID, |
594 | pSMBr->u.extended_response. | |
595 | GUID, 16) != 0) { | |
b6b38f70 | 596 | cFYI(1, "server UID changed"); |
254e55ed | 597 | memcpy(server->server_GUID, |
e187e44e JL |
598 | pSMBr->u.extended_response.GUID, |
599 | 16); | |
600 | } | |
e7ddee90 | 601 | } else { |
3f9bcca7 | 602 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
603 | memcpy(server->server_GUID, |
604 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 605 | } |
e187e44e JL |
606 | |
607 | if (count == 16) { | |
608 | server->secType = RawNTLMSSP; | |
254e55ed SF |
609 | } else { |
610 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
611 | SecurityBlob, count - 16, |
612 | server); | |
ef571cad | 613 | if (rc == 1) |
e545937a | 614 | rc = 0; |
ef571cad | 615 | else |
254e55ed | 616 | rc = -EINVAL; |
2b149f11 SP |
617 | if (server->secType == Kerberos) { |
618 | if (!server->sec_kerberos && | |
619 | !server->sec_mskerberos) | |
620 | rc = -EOPNOTSUPP; | |
621 | } else if (server->secType == RawNTLMSSP) { | |
622 | if (!server->sec_ntlmssp) | |
623 | rc = -EOPNOTSUPP; | |
624 | } else | |
625 | rc = -EOPNOTSUPP; | |
1da177e4 | 626 | } |
254e55ed SF |
627 | } else |
628 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
629 | ||
6344a423 | 630 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 631 | signing_check: |
6344a423 | 632 | #endif |
762e5ab7 SF |
633 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
634 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
635 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 636 | cFYI(1, "Signing disabled"); |
abb63d6c | 637 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 638 | cERROR(1, "Server requires " |
7111d214 | 639 | "packet signing to be enabled in " |
b6b38f70 | 640 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
641 | rc = -EOPNOTSUPP; |
642 | } | |
50c2f753 | 643 | server->secMode &= |
254e55ed | 644 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
645 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
646 | /* signing required */ | |
b6b38f70 | 647 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
762e5ab7 SF |
648 | if ((server->secMode & |
649 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
b6b38f70 | 650 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 651 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
652 | } else |
653 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
654 | } else { | |
655 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 656 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 657 | server->secMode &= |
254e55ed | 658 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 659 | } |
50c2f753 SF |
660 | |
661 | neg_err_exit: | |
4a6d87f1 | 662 | cifs_buf_release(pSMB); |
254e55ed | 663 | |
b6b38f70 | 664 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
665 | return rc; |
666 | } | |
667 | ||
668 | int | |
669 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
670 | { | |
671 | struct smb_hdr *smb_buffer; | |
1da177e4 | 672 | int rc = 0; |
1da177e4 | 673 | |
b6b38f70 | 674 | cFYI(1, "In tree disconnect"); |
1da177e4 | 675 | |
f1987b44 JL |
676 | /* BB: do we need to check this? These should never be NULL. */ |
677 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
678 | return -EIO; | |
1da177e4 | 679 | |
f1987b44 JL |
680 | /* |
681 | * No need to return error on this operation if tid invalidated and | |
682 | * closed on server already e.g. due to tcp session crashing. Also, | |
683 | * the tcon is no longer on the list, so no need to take lock before | |
684 | * checking this. | |
685 | */ | |
268875b9 | 686 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 687 | return 0; |
1da177e4 | 688 | |
50c2f753 | 689 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 690 | (void **)&smb_buffer); |
f1987b44 | 691 | if (rc) |
1da177e4 | 692 | return rc; |
133672ef SF |
693 | |
694 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 695 | if (rc) |
b6b38f70 | 696 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 697 | |
50c2f753 | 698 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 699 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
700 | if (rc == -EAGAIN) |
701 | rc = 0; | |
702 | ||
703 | return rc; | |
704 | } | |
705 | ||
766fdbb5 JL |
706 | /* |
707 | * This is a no-op for now. We're not really interested in the reply, but | |
708 | * rather in the fact that the server sent one and that server->lstrp | |
709 | * gets updated. | |
710 | * | |
711 | * FIXME: maybe we should consider checking that the reply matches request? | |
712 | */ | |
713 | static void | |
714 | cifs_echo_callback(struct mid_q_entry *mid) | |
715 | { | |
716 | struct TCP_Server_Info *server = mid->callback_data; | |
717 | ||
718 | DeleteMidQEntry(mid); | |
719 | atomic_dec(&server->inFlight); | |
720 | wake_up(&server->request_q); | |
721 | } | |
722 | ||
723 | int | |
724 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
725 | { | |
726 | ECHO_REQ *smb; | |
727 | int rc = 0; | |
728 | ||
729 | cFYI(1, "In echo request"); | |
730 | ||
731 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
732 | if (rc) | |
733 | return rc; | |
734 | ||
735 | /* set up echo request */ | |
5443d130 | 736 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
737 | smb->hdr.WordCount = 1; |
738 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 739 | put_bcc(1, &smb->hdr); |
766fdbb5 | 740 | smb->Data[0] = 'a'; |
be8e3b00 | 741 | inc_rfc1001_len(smb, 3); |
766fdbb5 JL |
742 | |
743 | rc = cifs_call_async(server, (struct smb_hdr *)smb, | |
744 | cifs_echo_callback, server); | |
745 | if (rc) | |
746 | cFYI(1, "Echo request failed: %d", rc); | |
747 | ||
748 | cifs_small_buf_release(smb); | |
749 | ||
750 | return rc; | |
751 | } | |
752 | ||
1da177e4 LT |
753 | int |
754 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
755 | { | |
1da177e4 LT |
756 | LOGOFF_ANDX_REQ *pSMB; |
757 | int rc = 0; | |
1da177e4 | 758 | |
b6b38f70 | 759 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 760 | |
14fbf50d JL |
761 | /* |
762 | * BB: do we need to check validity of ses and server? They should | |
763 | * always be valid since we have an active reference. If not, that | |
764 | * should probably be a BUG() | |
765 | */ | |
766 | if (!ses || !ses->server) | |
3b795210 SF |
767 | return -EIO; |
768 | ||
d7b619cf | 769 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
770 | if (ses->need_reconnect) |
771 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
772 | already closed due to reconnect */ | |
1da177e4 LT |
773 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
774 | if (rc) { | |
d7b619cf | 775 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
776 | return rc; |
777 | } | |
778 | ||
3b795210 | 779 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 780 | |
3b795210 | 781 | if (ses->server->secMode & |
1da177e4 LT |
782 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
783 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
784 | |
785 | pSMB->hdr.Uid = ses->Suid; | |
786 | ||
787 | pSMB->AndXCommand = 0xFF; | |
133672ef | 788 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 789 | session_already_dead: |
d7b619cf | 790 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
791 | |
792 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 793 | since server closed smb session, no sense reporting |
1da177e4 LT |
794 | error */ |
795 | if (rc == -EAGAIN) | |
796 | rc = 0; | |
797 | return rc; | |
798 | } | |
799 | ||
2d785a50 SF |
800 | int |
801 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
802 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
803 | { | |
804 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
805 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
806 | struct unlink_psx_rq *pRqD; | |
807 | int name_len; | |
808 | int rc = 0; | |
809 | int bytes_returned = 0; | |
810 | __u16 params, param_offset, offset, byte_count; | |
811 | ||
b6b38f70 | 812 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
813 | PsxDelete: |
814 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
815 | (void **) &pSMBr); | |
816 | if (rc) | |
817 | return rc; | |
818 | ||
819 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
820 | name_len = | |
821 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
822 | PATH_MAX, nls_codepage, remap); | |
823 | name_len++; /* trailing null */ | |
824 | name_len *= 2; | |
825 | } else { /* BB add path length overrun check */ | |
826 | name_len = strnlen(fileName, PATH_MAX); | |
827 | name_len++; /* trailing null */ | |
828 | strncpy(pSMB->FileName, fileName, name_len); | |
829 | } | |
830 | ||
831 | params = 6 + name_len; | |
832 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
833 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
834 | pSMB->MaxSetupCount = 0; | |
835 | pSMB->Reserved = 0; | |
836 | pSMB->Flags = 0; | |
837 | pSMB->Timeout = 0; | |
838 | pSMB->Reserved2 = 0; | |
839 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
840 | InformationLevel) - 4; | |
841 | offset = param_offset + params; | |
842 | ||
843 | /* Setup pointer to Request Data (inode type) */ | |
844 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
845 | pRqD->type = cpu_to_le16(type); | |
846 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
847 | pSMB->DataOffset = cpu_to_le16(offset); | |
848 | pSMB->SetupCount = 1; | |
849 | pSMB->Reserved3 = 0; | |
850 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
851 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
852 | ||
853 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
854 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
855 | pSMB->ParameterCount = cpu_to_le16(params); | |
856 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
857 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
858 | pSMB->Reserved4 = 0; | |
be8e3b00 | 859 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
860 | pSMB->ByteCount = cpu_to_le16(byte_count); |
861 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
862 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 863 | if (rc) |
b6b38f70 | 864 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
865 | cifs_buf_release(pSMB); |
866 | ||
867 | cifs_stats_inc(&tcon->num_deletes); | |
868 | ||
869 | if (rc == -EAGAIN) | |
870 | goto PsxDelete; | |
871 | ||
872 | return rc; | |
873 | } | |
874 | ||
1da177e4 | 875 | int |
737b758c SF |
876 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
877 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
878 | { |
879 | DELETE_FILE_REQ *pSMB = NULL; | |
880 | DELETE_FILE_RSP *pSMBr = NULL; | |
881 | int rc = 0; | |
882 | int bytes_returned; | |
883 | int name_len; | |
884 | ||
885 | DelFileRetry: | |
886 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
887 | (void **) &pSMBr); | |
888 | if (rc) | |
889 | return rc; | |
890 | ||
891 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
892 | name_len = | |
50c2f753 | 893 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 894 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
895 | name_len++; /* trailing null */ |
896 | name_len *= 2; | |
09d1db5c | 897 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
898 | name_len = strnlen(fileName, PATH_MAX); |
899 | name_len++; /* trailing null */ | |
900 | strncpy(pSMB->fileName, fileName, name_len); | |
901 | } | |
902 | pSMB->SearchAttributes = | |
903 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
904 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 905 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
906 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
907 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
908 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 909 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 910 | if (rc) |
b6b38f70 | 911 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
912 | |
913 | cifs_buf_release(pSMB); | |
914 | if (rc == -EAGAIN) | |
915 | goto DelFileRetry; | |
916 | ||
917 | return rc; | |
918 | } | |
919 | ||
920 | int | |
50c2f753 | 921 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 922 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
923 | { |
924 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
925 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
926 | int rc = 0; | |
927 | int bytes_returned; | |
928 | int name_len; | |
929 | ||
b6b38f70 | 930 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
931 | RmDirRetry: |
932 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
933 | (void **) &pSMBr); | |
934 | if (rc) | |
935 | return rc; | |
936 | ||
937 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
938 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
939 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
940 | name_len++; /* trailing null */ |
941 | name_len *= 2; | |
09d1db5c | 942 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
943 | name_len = strnlen(dirName, PATH_MAX); |
944 | name_len++; /* trailing null */ | |
945 | strncpy(pSMB->DirName, dirName, name_len); | |
946 | } | |
947 | ||
948 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 949 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
950 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
951 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
952 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 953 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 954 | if (rc) |
b6b38f70 | 955 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
956 | |
957 | cifs_buf_release(pSMB); | |
958 | if (rc == -EAGAIN) | |
959 | goto RmDirRetry; | |
960 | return rc; | |
961 | } | |
962 | ||
963 | int | |
964 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 965 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
966 | { |
967 | int rc = 0; | |
968 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
969 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
970 | int bytes_returned; | |
971 | int name_len; | |
972 | ||
b6b38f70 | 973 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
974 | MkDirRetry: |
975 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
976 | (void **) &pSMBr); | |
977 | if (rc) | |
978 | return rc; | |
979 | ||
980 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 981 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 982 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
983 | name_len++; /* trailing null */ |
984 | name_len *= 2; | |
09d1db5c | 985 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
986 | name_len = strnlen(name, PATH_MAX); |
987 | name_len++; /* trailing null */ | |
988 | strncpy(pSMB->DirName, name, name_len); | |
989 | } | |
990 | ||
991 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 992 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
993 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
994 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
995 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 996 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 997 | if (rc) |
b6b38f70 | 998 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 999 | |
1da177e4 LT |
1000 | cifs_buf_release(pSMB); |
1001 | if (rc == -EAGAIN) | |
1002 | goto MkDirRetry; | |
1003 | return rc; | |
1004 | } | |
1005 | ||
2dd29d31 SF |
1006 | int |
1007 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 1008 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1009 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1010 | const struct nls_table *nls_codepage, int remap) |
1011 | { | |
1012 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1013 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1014 | int name_len; | |
1015 | int rc = 0; | |
1016 | int bytes_returned = 0; | |
2dd29d31 | 1017 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1018 | OPEN_PSX_REQ *pdata; |
1019 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1020 | |
b6b38f70 | 1021 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1022 | PsxCreat: |
1023 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1024 | (void **) &pSMBr); | |
1025 | if (rc) | |
1026 | return rc; | |
1027 | ||
1028 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1029 | name_len = | |
1030 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1031 | PATH_MAX, nls_codepage, remap); | |
1032 | name_len++; /* trailing null */ | |
1033 | name_len *= 2; | |
1034 | } else { /* BB improve the check for buffer overruns BB */ | |
1035 | name_len = strnlen(name, PATH_MAX); | |
1036 | name_len++; /* trailing null */ | |
1037 | strncpy(pSMB->FileName, name, name_len); | |
1038 | } | |
1039 | ||
1040 | params = 6 + name_len; | |
1041 | count = sizeof(OPEN_PSX_REQ); | |
1042 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1043 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1044 | pSMB->MaxSetupCount = 0; | |
1045 | pSMB->Reserved = 0; | |
1046 | pSMB->Flags = 0; | |
1047 | pSMB->Timeout = 0; | |
1048 | pSMB->Reserved2 = 0; | |
1049 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1050 | InformationLevel) - 4; |
2dd29d31 | 1051 | offset = param_offset + params; |
2dd29d31 | 1052 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1053 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1054 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1055 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1056 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1057 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1058 | pSMB->DataOffset = cpu_to_le16(offset); | |
1059 | pSMB->SetupCount = 1; | |
1060 | pSMB->Reserved3 = 0; | |
1061 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1062 | byte_count = 3 /* pad */ + params + count; | |
1063 | ||
1064 | pSMB->DataCount = cpu_to_le16(count); | |
1065 | pSMB->ParameterCount = cpu_to_le16(params); | |
1066 | pSMB->TotalDataCount = pSMB->DataCount; | |
1067 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1068 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1069 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1070 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1071 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1072 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1073 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1074 | if (rc) { | |
b6b38f70 | 1075 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1076 | goto psx_create_err; |
1077 | } | |
1078 | ||
b6b38f70 | 1079 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1080 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1081 | ||
820a803f | 1082 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1083 | rc = -EIO; /* bad smb */ |
1084 | goto psx_create_err; | |
1085 | } | |
1086 | ||
1087 | /* copy return information to pRetData */ | |
50c2f753 | 1088 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1089 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1090 | |
2dd29d31 | 1091 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1092 | if (netfid) |
2dd29d31 SF |
1093 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1094 | /* Let caller know file was created so we can set the mode. */ | |
1095 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1096 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1097 | *pOplock |= CIFS_CREATE_ACTION; |
1098 | /* check to make sure response data is there */ | |
8f2376ad CG |
1099 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1100 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1101 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1102 | } else { |
820a803f | 1103 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1104 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1105 | cERROR(1, "Open response data too small"); |
8f2376ad | 1106 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1107 | goto psx_create_err; |
1108 | } | |
50c2f753 | 1109 | memcpy((char *) pRetData, |
cbac3cba | 1110 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1111 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1112 | } |
2dd29d31 SF |
1113 | |
1114 | psx_create_err: | |
1115 | cifs_buf_release(pSMB); | |
1116 | ||
65bc98b0 SF |
1117 | if (posix_flags & SMB_O_DIRECTORY) |
1118 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1119 | else | |
1120 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1121 | |
1122 | if (rc == -EAGAIN) | |
1123 | goto PsxCreat; | |
1124 | ||
50c2f753 | 1125 | return rc; |
2dd29d31 SF |
1126 | } |
1127 | ||
a9d02ad4 SF |
1128 | static __u16 convert_disposition(int disposition) |
1129 | { | |
1130 | __u16 ofun = 0; | |
1131 | ||
1132 | switch (disposition) { | |
1133 | case FILE_SUPERSEDE: | |
1134 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1135 | break; | |
1136 | case FILE_OPEN: | |
1137 | ofun = SMBOPEN_OAPPEND; | |
1138 | break; | |
1139 | case FILE_CREATE: | |
1140 | ofun = SMBOPEN_OCREATE; | |
1141 | break; | |
1142 | case FILE_OPEN_IF: | |
1143 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1144 | break; | |
1145 | case FILE_OVERWRITE: | |
1146 | ofun = SMBOPEN_OTRUNC; | |
1147 | break; | |
1148 | case FILE_OVERWRITE_IF: | |
1149 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1150 | break; | |
1151 | default: | |
b6b38f70 | 1152 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1153 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1154 | } | |
1155 | return ofun; | |
1156 | } | |
1157 | ||
35fc37d5 JL |
1158 | static int |
1159 | access_flags_to_smbopen_mode(const int access_flags) | |
1160 | { | |
1161 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1162 | ||
1163 | if (masked_flags == GENERIC_READ) | |
1164 | return SMBOPEN_READ; | |
1165 | else if (masked_flags == GENERIC_WRITE) | |
1166 | return SMBOPEN_WRITE; | |
1167 | ||
1168 | /* just go for read/write */ | |
1169 | return SMBOPEN_READWRITE; | |
1170 | } | |
1171 | ||
a9d02ad4 SF |
1172 | int |
1173 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1174 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1175 | const int access_flags, const int create_options, __u16 *netfid, |
1176 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1177 | const struct nls_table *nls_codepage, int remap) |
1178 | { | |
1179 | int rc = -EACCES; | |
1180 | OPENX_REQ *pSMB = NULL; | |
1181 | OPENX_RSP *pSMBr = NULL; | |
1182 | int bytes_returned; | |
1183 | int name_len; | |
1184 | __u16 count; | |
1185 | ||
1186 | OldOpenRetry: | |
1187 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1188 | (void **) &pSMBr); | |
1189 | if (rc) | |
1190 | return rc; | |
1191 | ||
1192 | pSMB->AndXCommand = 0xFF; /* none */ | |
1193 | ||
1194 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1195 | count = 1; /* account for one byte pad to word boundary */ | |
1196 | name_len = | |
1197 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1198 | fileName, PATH_MAX, nls_codepage, remap); | |
1199 | name_len++; /* trailing null */ | |
1200 | name_len *= 2; | |
1201 | } else { /* BB improve check for buffer overruns BB */ | |
1202 | count = 0; /* no pad */ | |
1203 | name_len = strnlen(fileName, PATH_MAX); | |
1204 | name_len++; /* trailing null */ | |
1205 | strncpy(pSMB->fileName, fileName, name_len); | |
1206 | } | |
1207 | if (*pOplock & REQ_OPLOCK) | |
1208 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1209 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1210 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1211 | |
a9d02ad4 | 1212 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1213 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1214 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1215 | /* set file as system file if special file such | |
1216 | as fifo and server expecting SFU style and | |
1217 | no Unix extensions */ | |
1218 | ||
790fe579 SF |
1219 | if (create_options & CREATE_OPTION_SPECIAL) |
1220 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1221 | else /* BB FIXME BB */ |
1222 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1223 | |
67750fb9 JL |
1224 | if (create_options & CREATE_OPTION_READONLY) |
1225 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1226 | |
1227 | /* BB FIXME BB */ | |
50c2f753 SF |
1228 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1229 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1230 | /* BB FIXME END BB */ |
3e87d803 SF |
1231 | |
1232 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1233 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1234 | count += name_len; |
be8e3b00 | 1235 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1236 | |
1237 | pSMB->ByteCount = cpu_to_le16(count); | |
1238 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1239 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1240 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1241 | cifs_stats_inc(&tcon->num_opens); |
1242 | if (rc) { | |
b6b38f70 | 1243 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1244 | } else { |
1245 | /* BB verify if wct == 15 */ | |
1246 | ||
582d21e5 | 1247 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1248 | |
1249 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1250 | /* Let caller know file was created so we can set the mode. */ | |
1251 | /* Do we care about the CreateAction in any other cases? */ | |
1252 | /* BB FIXME BB */ | |
790fe579 | 1253 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1254 | *pOplock |= CIFS_CREATE_ACTION; */ |
1255 | /* BB FIXME END */ | |
1256 | ||
790fe579 | 1257 | if (pfile_info) { |
a9d02ad4 SF |
1258 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1259 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1260 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1261 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1262 | pfile_info->Attributes = |
50c2f753 | 1263 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1264 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1265 | pfile_info->AllocationSize = |
1266 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1267 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1268 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1269 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1270 | } |
1271 | } | |
1272 | ||
1273 | cifs_buf_release(pSMB); | |
1274 | if (rc == -EAGAIN) | |
1275 | goto OldOpenRetry; | |
1276 | return rc; | |
1277 | } | |
1278 | ||
1da177e4 LT |
1279 | int |
1280 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1281 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1282 | const int access_flags, const int create_options, __u16 *netfid, |
1283 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1284 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1285 | { |
1286 | int rc = -EACCES; | |
1287 | OPEN_REQ *pSMB = NULL; | |
1288 | OPEN_RSP *pSMBr = NULL; | |
1289 | int bytes_returned; | |
1290 | int name_len; | |
1291 | __u16 count; | |
1292 | ||
1293 | openRetry: | |
1294 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1295 | (void **) &pSMBr); | |
1296 | if (rc) | |
1297 | return rc; | |
1298 | ||
1299 | pSMB->AndXCommand = 0xFF; /* none */ | |
1300 | ||
1301 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1302 | count = 1; /* account for one byte pad to word boundary */ | |
1303 | name_len = | |
b1a45695 | 1304 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1305 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1306 | name_len++; /* trailing null */ |
1307 | name_len *= 2; | |
1308 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1309 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1310 | count = 0; /* no pad */ |
1311 | name_len = strnlen(fileName, PATH_MAX); | |
1312 | name_len++; /* trailing null */ | |
1313 | pSMB->NameLength = cpu_to_le16(name_len); | |
1314 | strncpy(pSMB->fileName, fileName, name_len); | |
1315 | } | |
1316 | if (*pOplock & REQ_OPLOCK) | |
1317 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1318 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1319 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1320 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1321 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1322 | /* set file as system file if special file such |
1323 | as fifo and server expecting SFU style and | |
1324 | no Unix extensions */ | |
790fe579 | 1325 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1326 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1327 | else | |
1328 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1329 | |
1da177e4 LT |
1330 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1331 | /* but it helps speed up case sensitive checks for other | |
1332 | servers such as Samba */ | |
1333 | if (tcon->ses->capabilities & CAP_UNIX) | |
1334 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1335 | ||
67750fb9 JL |
1336 | if (create_options & CREATE_OPTION_READONLY) |
1337 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1338 | ||
1da177e4 LT |
1339 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1340 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1341 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1342 | /* BB Expirement with various impersonation levels and verify */ |
1343 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1344 | pSMB->SecurityFlags = |
1345 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1346 | ||
1347 | count += name_len; | |
be8e3b00 | 1348 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1349 | |
1350 | pSMB->ByteCount = cpu_to_le16(count); | |
1351 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1352 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1353 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1354 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1355 | if (rc) { |
b6b38f70 | 1356 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1357 | } else { |
09d1db5c | 1358 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1359 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1360 | /* Let caller know file was created so we can set the mode. */ | |
1361 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1362 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1363 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1364 | if (pfile_info) { |
61e74801 SF |
1365 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1366 | 36 /* CreationTime to Attributes */); | |
1367 | /* the file_info buf is endian converted by caller */ | |
1368 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1369 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1370 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1371 | pfile_info->DeletePending = 0; | |
1da177e4 | 1372 | } |
1da177e4 | 1373 | } |
a5a2b489 | 1374 | |
1da177e4 LT |
1375 | cifs_buf_release(pSMB); |
1376 | if (rc == -EAGAIN) | |
1377 | goto openRetry; | |
1378 | return rc; | |
1379 | } | |
1380 | ||
1da177e4 | 1381 | int |
50c2f753 SF |
1382 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1383 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1384 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1385 | { |
1386 | int rc = -EACCES; | |
1387 | READ_REQ *pSMB = NULL; | |
1388 | READ_RSP *pSMBr = NULL; | |
1389 | char *pReadData = NULL; | |
bfa0d75a | 1390 | int wct; |
ec637e3f SF |
1391 | int resp_buf_type = 0; |
1392 | struct kvec iov[1]; | |
1da177e4 | 1393 | |
b6b38f70 | 1394 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1395 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1396 | wct = 12; |
4c3130ef | 1397 | else { |
bfa0d75a | 1398 | wct = 10; /* old style read */ |
4c3130ef SF |
1399 | if ((lseek >> 32) > 0) { |
1400 | /* can not handle this big offset for old */ | |
1401 | return -EIO; | |
1402 | } | |
1403 | } | |
1da177e4 LT |
1404 | |
1405 | *nbytes = 0; | |
ec637e3f | 1406 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1407 | if (rc) |
1408 | return rc; | |
1409 | ||
1410 | /* tcon and ses pointer are checked in smb_init */ | |
1411 | if (tcon->ses->server == NULL) | |
1412 | return -ECONNABORTED; | |
1413 | ||
ec637e3f | 1414 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1415 | pSMB->Fid = netfid; |
1416 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1417 | if (wct == 12) |
bfa0d75a | 1418 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1419 | |
1da177e4 LT |
1420 | pSMB->Remaining = 0; |
1421 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1422 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1423 | if (wct == 12) |
bfa0d75a SF |
1424 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1425 | else { | |
1426 | /* old style read */ | |
50c2f753 | 1427 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1428 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1429 | pSMBW->ByteCount = 0; |
bfa0d75a | 1430 | } |
ec637e3f SF |
1431 | |
1432 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1433 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1434 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1435 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1436 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1437 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1438 | if (rc) { |
b6b38f70 | 1439 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1440 | } else { |
1441 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1442 | data_length = data_length << 16; | |
1443 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1444 | *nbytes = data_length; | |
1445 | ||
1446 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1447 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1448 | || (data_length > count)) { |
b6b38f70 JP |
1449 | cFYI(1, "bad length %d for count %d", |
1450 | data_length, count); | |
1da177e4 LT |
1451 | rc = -EIO; |
1452 | *nbytes = 0; | |
1453 | } else { | |
ec637e3f | 1454 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1455 | le16_to_cpu(pSMBr->DataOffset); |
1456 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1457 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1458 | rc = -EFAULT; |
26f57364 | 1459 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1460 | if (*buf) |
50c2f753 | 1461 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1462 | } |
1463 | } | |
1da177e4 | 1464 | |
4b8f930f | 1465 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1466 | if (*buf) { |
1467 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1468 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1469 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1470 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1471 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1472 | /* return buffer to caller to free */ |
1473 | *buf = iov[0].iov_base; | |
790fe579 | 1474 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1475 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1476 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1477 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1478 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1479 | |
1480 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1481 | since file handle passed in no longer valid */ |
1482 | return rc; | |
1483 | } | |
1484 | ||
ec637e3f | 1485 | |
1da177e4 LT |
1486 | int |
1487 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1488 | const int netfid, const unsigned int count, | |
1489 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1490 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1491 | { |
1492 | int rc = -EACCES; | |
1493 | WRITE_REQ *pSMB = NULL; | |
1494 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1495 | int bytes_returned, wct; |
1da177e4 LT |
1496 | __u32 bytes_sent; |
1497 | __u16 byte_count; | |
1498 | ||
a24e2d7d SF |
1499 | *nbytes = 0; |
1500 | ||
b6b38f70 | 1501 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1502 | if (tcon->ses == NULL) |
1c955187 SF |
1503 | return -ECONNABORTED; |
1504 | ||
790fe579 | 1505 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1506 | wct = 14; |
4c3130ef | 1507 | else { |
1c955187 | 1508 | wct = 12; |
4c3130ef SF |
1509 | if ((offset >> 32) > 0) { |
1510 | /* can not handle big offset for old srv */ | |
1511 | return -EIO; | |
1512 | } | |
1513 | } | |
1c955187 SF |
1514 | |
1515 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1516 | (void **) &pSMBr); |
1517 | if (rc) | |
1518 | return rc; | |
1519 | /* tcon and ses pointer are checked in smb_init */ | |
1520 | if (tcon->ses->server == NULL) | |
1521 | return -ECONNABORTED; | |
1522 | ||
1523 | pSMB->AndXCommand = 0xFF; /* none */ | |
1524 | pSMB->Fid = netfid; | |
1525 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1526 | if (wct == 14) |
1c955187 | 1527 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1528 | |
1da177e4 LT |
1529 | pSMB->Reserved = 0xFFFFFFFF; |
1530 | pSMB->WriteMode = 0; | |
1531 | pSMB->Remaining = 0; | |
1532 | ||
50c2f753 | 1533 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1534 | can send more if LARGE_WRITE_X capability returned by the server and if |
1535 | our buffer is big enough or if we convert to iovecs on socket writes | |
1536 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1537 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1538 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1539 | } else { | |
1540 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1541 | & ~0xFF; | |
1542 | } | |
1543 | ||
1544 | if (bytes_sent > count) | |
1545 | bytes_sent = count; | |
1546 | pSMB->DataOffset = | |
50c2f753 | 1547 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1548 | if (buf) |
61e74801 | 1549 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1550 | else if (ubuf) { |
1551 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1552 | cifs_buf_release(pSMB); |
1553 | return -EFAULT; | |
1554 | } | |
e30dcf3a | 1555 | } else if (count != 0) { |
1da177e4 LT |
1556 | /* No buffer */ |
1557 | cifs_buf_release(pSMB); | |
1558 | return -EINVAL; | |
e30dcf3a | 1559 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1560 | if (wct == 14) |
e30dcf3a | 1561 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1562 | else /* wct == 12 */ |
e30dcf3a | 1563 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1564 | |
1da177e4 LT |
1565 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1566 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1567 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1568 | |
790fe579 | 1569 | if (wct == 14) |
1c955187 | 1570 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1571 | else { /* old style write has byte count 4 bytes earlier |
1572 | so 4 bytes pad */ | |
1573 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1574 | (struct smb_com_writex_req *)pSMB; |
1575 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1576 | } | |
1da177e4 LT |
1577 | |
1578 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1579 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1580 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1581 | if (rc) { |
f19159dc | 1582 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1583 | } else { |
1584 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1585 | *nbytes = (*nbytes) << 16; | |
1586 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1587 | |
1588 | /* | |
1589 | * Mask off high 16 bits when bytes written as returned by the | |
1590 | * server is greater than bytes requested by the client. Some | |
1591 | * OS/2 servers are known to set incorrect CountHigh values. | |
1592 | */ | |
1593 | if (*nbytes > count) | |
1594 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1595 | } |
1596 | ||
1597 | cifs_buf_release(pSMB); | |
1598 | ||
50c2f753 | 1599 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1600 | since file handle passed in no longer valid */ |
1601 | ||
1602 | return rc; | |
1603 | } | |
1604 | ||
d6e04ae6 SF |
1605 | int |
1606 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1607 | const int netfid, const unsigned int count, |
3e84469d SF |
1608 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1609 | int n_vec, const int long_op) | |
1da177e4 LT |
1610 | { |
1611 | int rc = -EACCES; | |
1612 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1613 | int wct; |
d6e04ae6 | 1614 | int smb_hdr_len; |
ec637e3f | 1615 | int resp_buf_type = 0; |
1da177e4 | 1616 | |
fbec9ab9 JL |
1617 | *nbytes = 0; |
1618 | ||
b6b38f70 | 1619 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 1620 | |
4c3130ef | 1621 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1622 | wct = 14; |
4c3130ef | 1623 | } else { |
8cc64c6e | 1624 | wct = 12; |
4c3130ef SF |
1625 | if ((offset >> 32) > 0) { |
1626 | /* can not handle big offset for old srv */ | |
1627 | return -EIO; | |
1628 | } | |
1629 | } | |
8cc64c6e | 1630 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1631 | if (rc) |
1632 | return rc; | |
1da177e4 LT |
1633 | /* tcon and ses pointer are checked in smb_init */ |
1634 | if (tcon->ses->server == NULL) | |
1635 | return -ECONNABORTED; | |
1636 | ||
d6e04ae6 | 1637 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1638 | pSMB->Fid = netfid; |
1639 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1640 | if (wct == 14) |
8cc64c6e | 1641 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1642 | pSMB->Reserved = 0xFFFFFFFF; |
1643 | pSMB->WriteMode = 0; | |
1644 | pSMB->Remaining = 0; | |
d6e04ae6 | 1645 | |
1da177e4 | 1646 | pSMB->DataOffset = |
50c2f753 | 1647 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1648 | |
3e84469d SF |
1649 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1650 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1651 | /* header + 1 byte pad */ |
1652 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1653 | if (wct == 14) |
be8e3b00 | 1654 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1655 | else /* wct == 12 */ |
be8e3b00 | 1656 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1657 | if (wct == 14) |
8cc64c6e SF |
1658 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1659 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1660 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1661 | (struct smb_com_writex_req *)pSMB; |
1662 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1663 | } | |
3e84469d | 1664 | iov[0].iov_base = pSMB; |
790fe579 | 1665 | if (wct == 14) |
ec637e3f SF |
1666 | iov[0].iov_len = smb_hdr_len + 4; |
1667 | else /* wct == 12 pad bigger by four bytes */ | |
1668 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1669 | |
1da177e4 | 1670 | |
ec637e3f | 1671 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1672 | long_op); |
a4544347 | 1673 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1674 | if (rc) { |
b6b38f70 | 1675 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 1676 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1677 | /* presumably this can not happen, but best to be safe */ |
1678 | rc = -EIO; | |
d6e04ae6 | 1679 | } else { |
ad7a2926 | 1680 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1681 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1682 | *nbytes = (*nbytes) << 16; | |
1683 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1684 | |
1685 | /* | |
1686 | * Mask off high 16 bits when bytes written as returned by the | |
1687 | * server is greater than bytes requested by the client. OS/2 | |
1688 | * servers are known to set incorrect CountHigh values. | |
1689 | */ | |
1690 | if (*nbytes > count) | |
1691 | *nbytes &= 0xFFFF; | |
50c2f753 | 1692 | } |
1da177e4 | 1693 | |
4b8f930f | 1694 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1695 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1696 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1697 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1698 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1699 | |
50c2f753 | 1700 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1701 | since file handle passed in no longer valid */ |
1702 | ||
1703 | return rc; | |
1704 | } | |
d6e04ae6 SF |
1705 | |
1706 | ||
1da177e4 LT |
1707 | int |
1708 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1709 | const __u16 smb_file_id, const __u64 len, | |
1710 | const __u64 offset, const __u32 numUnlock, | |
12fed00d PS |
1711 | const __u32 numLock, const __u8 lockType, |
1712 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1713 | { |
1714 | int rc = 0; | |
1715 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1716 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1717 | int bytes_returned; |
1718 | int timeout = 0; | |
1719 | __u16 count; | |
1720 | ||
b6b38f70 | 1721 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
1722 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1723 | ||
1da177e4 LT |
1724 | if (rc) |
1725 | return rc; | |
1726 | ||
790fe579 | 1727 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1728 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1729 | pSMB->Timeout = 0; |
4b18f2a9 | 1730 | } else if (waitFlag) { |
133672ef | 1731 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1732 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1733 | } else { | |
1734 | pSMB->Timeout = 0; | |
1735 | } | |
1736 | ||
1737 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1738 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1739 | pSMB->LockType = lockType; | |
12fed00d | 1740 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1741 | pSMB->AndXCommand = 0xFF; /* none */ |
1742 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1743 | ||
790fe579 | 1744 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1745 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1746 | /* BB where to store pid high? */ | |
1747 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1748 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1749 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1750 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1751 | count = sizeof(LOCKING_ANDX_RANGE); | |
1752 | } else { | |
1753 | /* oplock break */ | |
1754 | count = 0; | |
1755 | } | |
be8e3b00 | 1756 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1757 | pSMB->ByteCount = cpu_to_le16(count); |
1758 | ||
7ee1af76 JA |
1759 | if (waitFlag) { |
1760 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1761 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1762 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1763 | } else { |
133672ef SF |
1764 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1765 | timeout); | |
1766 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1767 | } |
a4544347 | 1768 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1769 | if (rc) |
b6b38f70 | 1770 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 1771 | |
50c2f753 | 1772 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1773 | since file handle passed in no longer valid */ |
1774 | return rc; | |
1775 | } | |
1776 | ||
08547b03 SF |
1777 | int |
1778 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1779 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1780 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1781 | const bool waitFlag) |
08547b03 SF |
1782 | { |
1783 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1784 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1785 | struct cifs_posix_lock *parm_data; |
1786 | int rc = 0; | |
3a5ff61c | 1787 | int timeout = 0; |
08547b03 | 1788 | int bytes_returned = 0; |
133672ef | 1789 | int resp_buf_type = 0; |
08547b03 | 1790 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1791 | struct kvec iov[1]; |
08547b03 | 1792 | |
b6b38f70 | 1793 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 1794 | |
790fe579 | 1795 | if (pLockData == NULL) |
ed5f0370 | 1796 | return -EINVAL; |
fc94cdb9 | 1797 | |
08547b03 SF |
1798 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1799 | ||
1800 | if (rc) | |
1801 | return rc; | |
1802 | ||
1803 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1804 | ||
50c2f753 | 1805 | params = 6; |
08547b03 SF |
1806 | pSMB->MaxSetupCount = 0; |
1807 | pSMB->Reserved = 0; | |
1808 | pSMB->Flags = 0; | |
08547b03 SF |
1809 | pSMB->Reserved2 = 0; |
1810 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1811 | offset = param_offset + params; | |
1812 | ||
08547b03 SF |
1813 | count = sizeof(struct cifs_posix_lock); |
1814 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1815 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1816 | pSMB->SetupCount = 1; |
1817 | pSMB->Reserved3 = 0; | |
790fe579 | 1818 | if (get_flag) |
08547b03 SF |
1819 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1820 | else | |
1821 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1822 | byte_count = 3 /* pad */ + params + count; | |
1823 | pSMB->DataCount = cpu_to_le16(count); | |
1824 | pSMB->ParameterCount = cpu_to_le16(params); | |
1825 | pSMB->TotalDataCount = pSMB->DataCount; | |
1826 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1827 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1828 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1829 | (((char *) &pSMB->hdr.Protocol) + offset); |
1830 | ||
1831 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1832 | if (waitFlag) { |
133672ef | 1833 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1834 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1835 | pSMB->Timeout = cpu_to_le32(-1); |
1836 | } else | |
1837 | pSMB->Timeout = 0; | |
1838 | ||
08547b03 | 1839 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1840 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1841 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1842 | |
1843 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1844 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1845 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1846 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1847 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 1848 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
1849 | if (waitFlag) { |
1850 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1851 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1852 | } else { | |
133672ef | 1853 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 1854 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
1855 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
1856 | &resp_buf_type, timeout); | |
1857 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1858 | not try to free it twice below on exit */ | |
1859 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1860 | } |
1861 | ||
08547b03 | 1862 | if (rc) { |
b6b38f70 | 1863 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
1864 | } else if (get_flag) { |
1865 | /* lock structure can be returned on get */ | |
1866 | __u16 data_offset; | |
1867 | __u16 data_count; | |
1868 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1869 | ||
820a803f | 1870 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
1871 | rc = -EIO; /* bad smb */ |
1872 | goto plk_err_exit; | |
1873 | } | |
fc94cdb9 SF |
1874 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1875 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1876 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1877 | rc = -EIO; |
1878 | goto plk_err_exit; | |
1879 | } | |
1880 | parm_data = (struct cifs_posix_lock *) | |
1881 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 1882 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1883 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
1884 | else { |
1885 | if (parm_data->lock_type == | |
1886 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
1887 | pLockData->fl_type = F_RDLCK; | |
1888 | else if (parm_data->lock_type == | |
1889 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
1890 | pLockData->fl_type = F_WRLCK; | |
1891 | ||
5443d130 SF |
1892 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
1893 | pLockData->fl_end = pLockData->fl_start + | |
1894 | le64_to_cpu(parm_data->length) - 1; | |
1895 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 1896 | } |
08547b03 | 1897 | } |
50c2f753 | 1898 | |
fc94cdb9 | 1899 | plk_err_exit: |
08547b03 SF |
1900 | if (pSMB) |
1901 | cifs_small_buf_release(pSMB); | |
1902 | ||
133672ef SF |
1903 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1904 | cifs_small_buf_release(iov[0].iov_base); | |
1905 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1906 | cifs_buf_release(iov[0].iov_base); | |
1907 | ||
08547b03 SF |
1908 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1909 | since file handle passed in no longer valid */ | |
1910 | ||
1911 | return rc; | |
1912 | } | |
1913 | ||
1914 | ||
1da177e4 LT |
1915 | int |
1916 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1917 | { | |
1918 | int rc = 0; | |
1919 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 1920 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
1921 | |
1922 | /* do not retry on dead session on close */ | |
1923 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1924 | if (rc == -EAGAIN) |
1da177e4 LT |
1925 | return 0; |
1926 | if (rc) | |
1927 | return rc; | |
1928 | ||
1da177e4 | 1929 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1930 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1931 | pSMB->ByteCount = 0; |
133672ef | 1932 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1933 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1934 | if (rc) { |
790fe579 | 1935 | if (rc != -EINTR) { |
1da177e4 | 1936 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 1937 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
1938 | } |
1939 | } | |
1940 | ||
1da177e4 | 1941 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1942 | if (rc == -EAGAIN) |
1da177e4 LT |
1943 | rc = 0; |
1944 | ||
1945 | return rc; | |
1946 | } | |
1947 | ||
b298f223 SF |
1948 | int |
1949 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1950 | { | |
1951 | int rc = 0; | |
1952 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 1953 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
1954 | |
1955 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
1956 | if (rc) | |
1957 | return rc; | |
1958 | ||
1959 | pSMB->FileID = (__u16) smb_file_id; | |
1960 | pSMB->ByteCount = 0; | |
1961 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1962 | cifs_stats_inc(&tcon->num_flushes); | |
1963 | if (rc) | |
b6b38f70 | 1964 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
1965 | |
1966 | return rc; | |
1967 | } | |
1968 | ||
1da177e4 LT |
1969 | int |
1970 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1971 | const char *fromName, const char *toName, | |
737b758c | 1972 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1973 | { |
1974 | int rc = 0; | |
1975 | RENAME_REQ *pSMB = NULL; | |
1976 | RENAME_RSP *pSMBr = NULL; | |
1977 | int bytes_returned; | |
1978 | int name_len, name_len2; | |
1979 | __u16 count; | |
1980 | ||
b6b38f70 | 1981 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
1982 | renameRetry: |
1983 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1984 | (void **) &pSMBr); | |
1985 | if (rc) | |
1986 | return rc; | |
1987 | ||
1988 | pSMB->BufferFormat = 0x04; | |
1989 | pSMB->SearchAttributes = | |
1990 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1991 | ATTR_DIRECTORY); | |
1992 | ||
1993 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1994 | name_len = | |
50c2f753 | 1995 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1996 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1997 | name_len++; /* trailing null */ |
1998 | name_len *= 2; | |
1999 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2000 | /* protocol requires ASCII signature byte on Unicode string */ | |
2001 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2002 | name_len2 = | |
582d21e5 | 2003 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2004 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2005 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2006 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2007 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2008 | name_len = strnlen(fromName, PATH_MAX); |
2009 | name_len++; /* trailing null */ | |
2010 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2011 | name_len2 = strnlen(toName, PATH_MAX); | |
2012 | name_len2++; /* trailing null */ | |
2013 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2014 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2015 | name_len2++; /* trailing null */ | |
2016 | name_len2++; /* signature byte */ | |
2017 | } | |
2018 | ||
2019 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2020 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2021 | pSMB->ByteCount = cpu_to_le16(count); |
2022 | ||
2023 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2024 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2025 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2026 | if (rc) |
b6b38f70 | 2027 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2028 | |
1da177e4 LT |
2029 | cifs_buf_release(pSMB); |
2030 | ||
2031 | if (rc == -EAGAIN) | |
2032 | goto renameRetry; | |
2033 | ||
2034 | return rc; | |
2035 | } | |
2036 | ||
50c2f753 | 2037 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 2038 | int netfid, const char *target_name, |
50c2f753 | 2039 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2040 | { |
2041 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2042 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2043 | struct set_file_rename *rename_info; |
1da177e4 LT |
2044 | char *data_offset; |
2045 | char dummy_string[30]; | |
2046 | int rc = 0; | |
2047 | int bytes_returned = 0; | |
2048 | int len_of_str; | |
2049 | __u16 params, param_offset, offset, count, byte_count; | |
2050 | ||
b6b38f70 | 2051 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2052 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2053 | (void **) &pSMBr); | |
2054 | if (rc) | |
2055 | return rc; | |
2056 | ||
2057 | params = 6; | |
2058 | pSMB->MaxSetupCount = 0; | |
2059 | pSMB->Reserved = 0; | |
2060 | pSMB->Flags = 0; | |
2061 | pSMB->Timeout = 0; | |
2062 | pSMB->Reserved2 = 0; | |
2063 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2064 | offset = param_offset + params; | |
2065 | ||
2066 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2067 | rename_info = (struct set_file_rename *) data_offset; | |
2068 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2069 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2070 | pSMB->SetupCount = 1; |
2071 | pSMB->Reserved3 = 0; | |
2072 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2073 | byte_count = 3 /* pad */ + params; | |
2074 | pSMB->ParameterCount = cpu_to_le16(params); | |
2075 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2076 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2077 | pSMB->DataOffset = cpu_to_le16(offset); | |
2078 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2079 | rename_info->overwrite = cpu_to_le32(1); | |
2080 | rename_info->root_fid = 0; | |
2081 | /* unicode only call */ | |
790fe579 | 2082 | if (target_name == NULL) { |
50c2f753 SF |
2083 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2084 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2085 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2086 | } else { |
b1a45695 | 2087 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2088 | target_name, PATH_MAX, nls_codepage, |
2089 | remap); | |
1da177e4 LT |
2090 | } |
2091 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2092 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2093 | byte_count += count; |
2094 | pSMB->DataCount = cpu_to_le16(count); | |
2095 | pSMB->TotalDataCount = pSMB->DataCount; | |
2096 | pSMB->Fid = netfid; | |
2097 | pSMB->InformationLevel = | |
2098 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2099 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2100 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2101 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2102 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2103 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2104 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2105 | if (rc) |
b6b38f70 | 2106 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2107 | |
1da177e4 LT |
2108 | cifs_buf_release(pSMB); |
2109 | ||
2110 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2111 | since file handle passed in no longer valid */ | |
2112 | ||
2113 | return rc; | |
2114 | } | |
2115 | ||
2116 | int | |
50c2f753 SF |
2117 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2118 | const __u16 target_tid, const char *toName, const int flags, | |
2119 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2120 | { |
2121 | int rc = 0; | |
2122 | COPY_REQ *pSMB = NULL; | |
2123 | COPY_RSP *pSMBr = NULL; | |
2124 | int bytes_returned; | |
2125 | int name_len, name_len2; | |
2126 | __u16 count; | |
2127 | ||
b6b38f70 | 2128 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2129 | copyRetry: |
2130 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2131 | (void **) &pSMBr); | |
2132 | if (rc) | |
2133 | return rc; | |
2134 | ||
2135 | pSMB->BufferFormat = 0x04; | |
2136 | pSMB->Tid2 = target_tid; | |
2137 | ||
2138 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2139 | ||
2140 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2141 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2142 | fromName, PATH_MAX, nls_codepage, |
2143 | remap); | |
1da177e4 LT |
2144 | name_len++; /* trailing null */ |
2145 | name_len *= 2; | |
2146 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2147 | /* protocol requires ASCII signature byte on Unicode string */ | |
2148 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2149 | name_len2 = |
2150 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2151 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2152 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2153 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2154 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2155 | name_len = strnlen(fromName, PATH_MAX); |
2156 | name_len++; /* trailing null */ | |
2157 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2158 | name_len2 = strnlen(toName, PATH_MAX); | |
2159 | name_len2++; /* trailing null */ | |
2160 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2161 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2162 | name_len2++; /* trailing null */ | |
2163 | name_len2++; /* signature byte */ | |
2164 | } | |
2165 | ||
2166 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2167 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2168 | pSMB->ByteCount = cpu_to_le16(count); |
2169 | ||
2170 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2171 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2172 | if (rc) { | |
b6b38f70 JP |
2173 | cFYI(1, "Send error in copy = %d with %d files copied", |
2174 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2175 | } |
0d817bc0 | 2176 | cifs_buf_release(pSMB); |
1da177e4 LT |
2177 | |
2178 | if (rc == -EAGAIN) | |
2179 | goto copyRetry; | |
2180 | ||
2181 | return rc; | |
2182 | } | |
2183 | ||
2184 | int | |
2185 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2186 | const char *fromName, const char *toName, | |
2187 | const struct nls_table *nls_codepage) | |
2188 | { | |
2189 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2190 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2191 | char *data_offset; | |
2192 | int name_len; | |
2193 | int name_len_target; | |
2194 | int rc = 0; | |
2195 | int bytes_returned = 0; | |
2196 | __u16 params, param_offset, offset, byte_count; | |
2197 | ||
b6b38f70 | 2198 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2199 | createSymLinkRetry: |
2200 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2201 | (void **) &pSMBr); | |
2202 | if (rc) | |
2203 | return rc; | |
2204 | ||
2205 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2206 | name_len = | |
e89dc920 | 2207 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2208 | /* find define for this maxpathcomponent */ |
2209 | , nls_codepage); | |
2210 | name_len++; /* trailing null */ | |
2211 | name_len *= 2; | |
2212 | ||
50c2f753 | 2213 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2214 | name_len = strnlen(fromName, PATH_MAX); |
2215 | name_len++; /* trailing null */ | |
2216 | strncpy(pSMB->FileName, fromName, name_len); | |
2217 | } | |
2218 | params = 6 + name_len; | |
2219 | pSMB->MaxSetupCount = 0; | |
2220 | pSMB->Reserved = 0; | |
2221 | pSMB->Flags = 0; | |
2222 | pSMB->Timeout = 0; | |
2223 | pSMB->Reserved2 = 0; | |
2224 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2225 | InformationLevel) - 4; |
1da177e4 LT |
2226 | offset = param_offset + params; |
2227 | ||
2228 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2229 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2230 | name_len_target = | |
e89dc920 | 2231 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2232 | /* find define for this maxpathcomponent */ |
2233 | , nls_codepage); | |
2234 | name_len_target++; /* trailing null */ | |
2235 | name_len_target *= 2; | |
50c2f753 | 2236 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2237 | name_len_target = strnlen(toName, PATH_MAX); |
2238 | name_len_target++; /* trailing null */ | |
2239 | strncpy(data_offset, toName, name_len_target); | |
2240 | } | |
2241 | ||
2242 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2243 | /* BB find exact max on data count below from sess */ | |
2244 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2245 | pSMB->SetupCount = 1; | |
2246 | pSMB->Reserved3 = 0; | |
2247 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2248 | byte_count = 3 /* pad */ + params + name_len_target; | |
2249 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2250 | pSMB->ParameterCount = cpu_to_le16(params); | |
2251 | pSMB->TotalDataCount = pSMB->DataCount; | |
2252 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2253 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2254 | pSMB->DataOffset = cpu_to_le16(offset); | |
2255 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2256 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2257 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2258 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2259 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2260 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2261 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2262 | if (rc) |
b6b38f70 | 2263 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2264 | |
0d817bc0 | 2265 | cifs_buf_release(pSMB); |
1da177e4 LT |
2266 | |
2267 | if (rc == -EAGAIN) | |
2268 | goto createSymLinkRetry; | |
2269 | ||
2270 | return rc; | |
2271 | } | |
2272 | ||
2273 | int | |
2274 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2275 | const char *fromName, const char *toName, | |
737b758c | 2276 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2277 | { |
2278 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2279 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2280 | char *data_offset; | |
2281 | int name_len; | |
2282 | int name_len_target; | |
2283 | int rc = 0; | |
2284 | int bytes_returned = 0; | |
2285 | __u16 params, param_offset, offset, byte_count; | |
2286 | ||
b6b38f70 | 2287 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2288 | createHardLinkRetry: |
2289 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2290 | (void **) &pSMBr); | |
2291 | if (rc) | |
2292 | return rc; | |
2293 | ||
2294 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2295 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2296 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2297 | name_len++; /* trailing null */ |
2298 | name_len *= 2; | |
2299 | ||
50c2f753 | 2300 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2301 | name_len = strnlen(toName, PATH_MAX); |
2302 | name_len++; /* trailing null */ | |
2303 | strncpy(pSMB->FileName, toName, name_len); | |
2304 | } | |
2305 | params = 6 + name_len; | |
2306 | pSMB->MaxSetupCount = 0; | |
2307 | pSMB->Reserved = 0; | |
2308 | pSMB->Flags = 0; | |
2309 | pSMB->Timeout = 0; | |
2310 | pSMB->Reserved2 = 0; | |
2311 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2312 | InformationLevel) - 4; |
1da177e4 LT |
2313 | offset = param_offset + params; |
2314 | ||
2315 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2316 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2317 | name_len_target = | |
b1a45695 | 2318 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2319 | nls_codepage, remap); |
1da177e4 LT |
2320 | name_len_target++; /* trailing null */ |
2321 | name_len_target *= 2; | |
50c2f753 | 2322 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2323 | name_len_target = strnlen(fromName, PATH_MAX); |
2324 | name_len_target++; /* trailing null */ | |
2325 | strncpy(data_offset, fromName, name_len_target); | |
2326 | } | |
2327 | ||
2328 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2329 | /* BB find exact max on data count below from sess*/ | |
2330 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2331 | pSMB->SetupCount = 1; | |
2332 | pSMB->Reserved3 = 0; | |
2333 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2334 | byte_count = 3 /* pad */ + params + name_len_target; | |
2335 | pSMB->ParameterCount = cpu_to_le16(params); | |
2336 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2337 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2338 | pSMB->TotalDataCount = pSMB->DataCount; | |
2339 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2340 | pSMB->DataOffset = cpu_to_le16(offset); | |
2341 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2342 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2343 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2344 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2345 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2346 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2347 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2348 | if (rc) |
b6b38f70 | 2349 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2350 | |
2351 | cifs_buf_release(pSMB); | |
2352 | if (rc == -EAGAIN) | |
2353 | goto createHardLinkRetry; | |
2354 | ||
2355 | return rc; | |
2356 | } | |
2357 | ||
2358 | int | |
2359 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2360 | const char *fromName, const char *toName, | |
737b758c | 2361 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2362 | { |
2363 | int rc = 0; | |
2364 | NT_RENAME_REQ *pSMB = NULL; | |
2365 | RENAME_RSP *pSMBr = NULL; | |
2366 | int bytes_returned; | |
2367 | int name_len, name_len2; | |
2368 | __u16 count; | |
2369 | ||
b6b38f70 | 2370 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2371 | winCreateHardLinkRetry: |
2372 | ||
2373 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2374 | (void **) &pSMBr); | |
2375 | if (rc) | |
2376 | return rc; | |
2377 | ||
2378 | pSMB->SearchAttributes = | |
2379 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2380 | ATTR_DIRECTORY); | |
2381 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2382 | pSMB->ClusterCount = 0; | |
2383 | ||
2384 | pSMB->BufferFormat = 0x04; | |
2385 | ||
2386 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2387 | name_len = | |
b1a45695 | 2388 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2389 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2390 | name_len++; /* trailing null */ |
2391 | name_len *= 2; | |
fcc7c09d JL |
2392 | |
2393 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2394 | pSMB->OldFileName[name_len] = 0x04; | |
2395 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2396 | name_len2 = |
50c2f753 | 2397 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2398 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2399 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2400 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2401 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2402 | name_len = strnlen(fromName, PATH_MAX); |
2403 | name_len++; /* trailing null */ | |
2404 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2405 | name_len2 = strnlen(toName, PATH_MAX); | |
2406 | name_len2++; /* trailing null */ | |
2407 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2408 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2409 | name_len2++; /* trailing null */ | |
2410 | name_len2++; /* signature byte */ | |
2411 | } | |
2412 | ||
2413 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2414 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2415 | pSMB->ByteCount = cpu_to_le16(count); |
2416 | ||
2417 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2418 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2419 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2420 | if (rc) |
b6b38f70 | 2421 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2422 | |
1da177e4 LT |
2423 | cifs_buf_release(pSMB); |
2424 | if (rc == -EAGAIN) | |
2425 | goto winCreateHardLinkRetry; | |
2426 | ||
2427 | return rc; | |
2428 | } | |
2429 | ||
2430 | int | |
2431 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2432 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2433 | const struct nls_table *nls_codepage) |
2434 | { | |
2435 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2436 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2437 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2438 | int rc = 0; | |
2439 | int bytes_returned; | |
2440 | int name_len; | |
2441 | __u16 params, byte_count; | |
460b9696 | 2442 | char *data_start; |
1da177e4 | 2443 | |
b6b38f70 | 2444 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2445 | |
2446 | querySymLinkRetry: | |
2447 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2448 | (void **) &pSMBr); | |
2449 | if (rc) | |
2450 | return rc; | |
2451 | ||
2452 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2453 | name_len = | |
50c2f753 SF |
2454 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2455 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2456 | name_len++; /* trailing null */ |
2457 | name_len *= 2; | |
50c2f753 | 2458 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2459 | name_len = strnlen(searchName, PATH_MAX); |
2460 | name_len++; /* trailing null */ | |
2461 | strncpy(pSMB->FileName, searchName, name_len); | |
2462 | } | |
2463 | ||
2464 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2465 | pSMB->TotalDataCount = 0; | |
2466 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2467 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2468 | pSMB->MaxSetupCount = 0; |
2469 | pSMB->Reserved = 0; | |
2470 | pSMB->Flags = 0; | |
2471 | pSMB->Timeout = 0; | |
2472 | pSMB->Reserved2 = 0; | |
2473 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2474 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2475 | pSMB->DataCount = 0; |
2476 | pSMB->DataOffset = 0; | |
2477 | pSMB->SetupCount = 1; | |
2478 | pSMB->Reserved3 = 0; | |
2479 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2480 | byte_count = params + 1 /* pad */ ; | |
2481 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2482 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2483 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2484 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2485 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2486 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2487 | ||
2488 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2489 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2490 | if (rc) { | |
b6b38f70 | 2491 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
2492 | } else { |
2493 | /* decode response */ | |
2494 | ||
2495 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2496 | /* BB also check enough total bytes returned */ |
820a803f | 2497 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2498 | rc = -EIO; |
1da177e4 | 2499 | else { |
0e0d2cf3 | 2500 | bool is_unicode; |
460b9696 JL |
2501 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2502 | ||
2503 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2504 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2505 | |
0e0d2cf3 SF |
2506 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2507 | is_unicode = true; | |
2508 | else | |
2509 | is_unicode = false; | |
2510 | ||
737b758c | 2511 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2512 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2513 | is_unicode, nls_codepage); |
8b6427a2 | 2514 | if (!*symlinkinfo) |
460b9696 | 2515 | rc = -ENOMEM; |
1da177e4 LT |
2516 | } |
2517 | } | |
2518 | cifs_buf_release(pSMB); | |
2519 | if (rc == -EAGAIN) | |
2520 | goto querySymLinkRetry; | |
2521 | return rc; | |
2522 | } | |
2523 | ||
c52a9554 SF |
2524 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
2525 | /* | |
2526 | * Recent Windows versions now create symlinks more frequently | |
2527 | * and they use the "reparse point" mechanism below. We can of course | |
2528 | * do symlinks nicely to Samba and other servers which support the | |
2529 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2530 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2531 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2532 | * In the interim this code has been moved to its own config option so | |
2533 | * it is not compiled in by default until callers fixed up and more tested. | |
2534 | */ | |
1da177e4 LT |
2535 | int |
2536 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2537 | const unsigned char *searchName, | |
50c2f753 | 2538 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2539 | const struct nls_table *nls_codepage) |
2540 | { | |
2541 | int rc = 0; | |
2542 | int bytes_returned; | |
50c2f753 SF |
2543 | struct smb_com_transaction_ioctl_req *pSMB; |
2544 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 2545 | |
b6b38f70 | 2546 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
2547 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2548 | (void **) &pSMBr); | |
2549 | if (rc) | |
2550 | return rc; | |
2551 | ||
2552 | pSMB->TotalParameterCount = 0 ; | |
2553 | pSMB->TotalDataCount = 0; | |
2554 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2555 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2556 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2557 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2558 | pSMB->MaxSetupCount = 4; |
2559 | pSMB->Reserved = 0; | |
2560 | pSMB->ParameterOffset = 0; | |
2561 | pSMB->DataCount = 0; | |
2562 | pSMB->DataOffset = 0; | |
2563 | pSMB->SetupCount = 4; | |
2564 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2565 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2566 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2567 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2568 | pSMB->IsRootFlag = 0; | |
2569 | pSMB->Fid = fid; /* file handle always le */ | |
2570 | pSMB->ByteCount = 0; | |
2571 | ||
2572 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2573 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2574 | if (rc) { | |
b6b38f70 | 2575 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
2576 | } else { /* decode response */ |
2577 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2578 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
2579 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
2580 | /* BB also check enough total bytes returned */ | |
1da177e4 | 2581 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
2582 | goto qreparse_out; |
2583 | } | |
2584 | if (data_count && (data_count < 2048)) { | |
2585 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 2586 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 2587 | |
afe48c31 | 2588 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2589 | (struct reparse_data *) |
2590 | ((char *)&pSMBr->hdr.Protocol | |
2591 | + data_offset); | |
afe48c31 SF |
2592 | if ((char *)reparse_buf >= end_of_smb) { |
2593 | rc = -EIO; | |
2594 | goto qreparse_out; | |
2595 | } | |
2596 | if ((reparse_buf->LinkNamesBuf + | |
2597 | reparse_buf->TargetNameOffset + | |
2598 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 2599 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
2600 | rc = -EIO; |
2601 | goto qreparse_out; | |
2602 | } | |
50c2f753 | 2603 | |
afe48c31 SF |
2604 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2605 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2606 | (reparse_buf->LinkNamesBuf + |
2607 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2608 | buflen, |
2609 | reparse_buf->TargetNameLen, | |
2610 | nls_codepage, 0); | |
2611 | } else { /* ASCII names */ | |
2612 | strncpy(symlinkinfo, | |
2613 | reparse_buf->LinkNamesBuf + | |
2614 | reparse_buf->TargetNameOffset, | |
2615 | min_t(const int, buflen, | |
2616 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2617 | } |
afe48c31 SF |
2618 | } else { |
2619 | rc = -EIO; | |
b6b38f70 JP |
2620 | cFYI(1, "Invalid return data count on " |
2621 | "get reparse info ioctl"); | |
1da177e4 | 2622 | } |
afe48c31 SF |
2623 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2624 | does not go off the end of the buffer */ | |
b6b38f70 | 2625 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 2626 | } |
989c7e51 | 2627 | |
1da177e4 | 2628 | qreparse_out: |
4a6d87f1 | 2629 | cifs_buf_release(pSMB); |
1da177e4 LT |
2630 | |
2631 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2632 | since file handle passed in no longer valid */ | |
2633 | ||
2634 | return rc; | |
2635 | } | |
c52a9554 | 2636 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
2637 | |
2638 | #ifdef CONFIG_CIFS_POSIX | |
2639 | ||
2640 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2641 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2642 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2643 | { |
2644 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2645 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2646 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2647 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 2648 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
2649 | |
2650 | return; | |
2651 | } | |
2652 | ||
2653 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2654 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2655 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2656 | { |
2657 | int size = 0; | |
2658 | int i; | |
2659 | __u16 count; | |
50c2f753 SF |
2660 | struct cifs_posix_ace *pACE; |
2661 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2662 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2663 | |
2664 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2665 | return -EOPNOTSUPP; | |
2666 | ||
790fe579 | 2667 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2668 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2669 | pACE = &cifs_acl->ace_array[0]; | |
2670 | size = sizeof(struct cifs_posix_acl); | |
2671 | size += sizeof(struct cifs_posix_ace) * count; | |
2672 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2673 | if (size_of_data_area < size) { |
b6b38f70 JP |
2674 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
2675 | size_of_data_area, size); | |
1da177e4 LT |
2676 | return -EINVAL; |
2677 | } | |
790fe579 | 2678 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2679 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2680 | size = sizeof(struct cifs_posix_acl); | |
2681 | size += sizeof(struct cifs_posix_ace) * count; | |
2682 | /* skip past access ACEs to get to default ACEs */ | |
2683 | pACE = &cifs_acl->ace_array[count]; | |
2684 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2685 | size += sizeof(struct cifs_posix_ace) * count; | |
2686 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2687 | if (size_of_data_area < size) |
1da177e4 LT |
2688 | return -EINVAL; |
2689 | } else { | |
2690 | /* illegal type */ | |
2691 | return -EINVAL; | |
2692 | } | |
2693 | ||
2694 | size = posix_acl_xattr_size(count); | |
790fe579 | 2695 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2696 | /* used to query ACL EA size */ |
790fe579 | 2697 | } else if (size > buflen) { |
1da177e4 LT |
2698 | return -ERANGE; |
2699 | } else /* buffer big enough */ { | |
ff7feac9 | 2700 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2701 | for (i = 0; i < count ; i++) { |
2702 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2703 | pACE++; | |
1da177e4 LT |
2704 | } |
2705 | } | |
2706 | return size; | |
2707 | } | |
2708 | ||
50c2f753 SF |
2709 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2710 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2711 | { |
2712 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2713 | ||
ff7feac9 SF |
2714 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2715 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2716 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2717 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2718 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2719 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2720 | } else |
ff7feac9 | 2721 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 2722 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
2723 | return rc; |
2724 | } | |
2725 | ||
2726 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2727 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2728 | const int buflen, const int acl_type) | |
1da177e4 LT |
2729 | { |
2730 | __u16 rc = 0; | |
50c2f753 SF |
2731 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2732 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2733 | int count; |
2734 | int i; | |
2735 | ||
790fe579 | 2736 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2737 | return 0; |
2738 | ||
2739 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 2740 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 2741 | "version of %d", |
b6b38f70 | 2742 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 2743 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
2744 | cFYI(1, "unknown POSIX ACL version %d", |
2745 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
2746 | return 0; |
2747 | } | |
2748 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2749 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2750 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2751 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2752 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2753 | else { |
b6b38f70 | 2754 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
2755 | return 0; |
2756 | } | |
50c2f753 | 2757 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2758 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2759 | &local_acl->a_entries[i]); | |
790fe579 | 2760 | if (rc != 0) { |
1da177e4 LT |
2761 | /* ACE not converted */ |
2762 | break; | |
2763 | } | |
2764 | } | |
790fe579 | 2765 | if (rc == 0) { |
1da177e4 LT |
2766 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2767 | rc += sizeof(struct cifs_posix_acl); | |
2768 | /* BB add check to make sure ACL does not overflow SMB */ | |
2769 | } | |
2770 | return rc; | |
2771 | } | |
2772 | ||
2773 | int | |
2774 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2775 | const unsigned char *searchName, |
2776 | char *acl_inf, const int buflen, const int acl_type, | |
2777 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2778 | { |
2779 | /* SMB_QUERY_POSIX_ACL */ | |
2780 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2781 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2782 | int rc = 0; | |
2783 | int bytes_returned; | |
2784 | int name_len; | |
2785 | __u16 params, byte_count; | |
50c2f753 | 2786 | |
b6b38f70 | 2787 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
2788 | |
2789 | queryAclRetry: | |
2790 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2791 | (void **) &pSMBr); | |
2792 | if (rc) | |
2793 | return rc; | |
50c2f753 | 2794 | |
1da177e4 LT |
2795 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2796 | name_len = | |
50c2f753 | 2797 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2798 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2799 | name_len++; /* trailing null */ |
2800 | name_len *= 2; | |
2801 | pSMB->FileName[name_len] = 0; | |
2802 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2803 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2804 | name_len = strnlen(searchName, PATH_MAX); |
2805 | name_len++; /* trailing null */ | |
2806 | strncpy(pSMB->FileName, searchName, name_len); | |
2807 | } | |
2808 | ||
2809 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2810 | pSMB->TotalDataCount = 0; | |
2811 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2812 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2813 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2814 | pSMB->MaxSetupCount = 0; | |
2815 | pSMB->Reserved = 0; | |
2816 | pSMB->Flags = 0; | |
2817 | pSMB->Timeout = 0; | |
2818 | pSMB->Reserved2 = 0; | |
2819 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2820 | offsetof(struct smb_com_transaction2_qpi_req, |
2821 | InformationLevel) - 4); | |
1da177e4 LT |
2822 | pSMB->DataCount = 0; |
2823 | pSMB->DataOffset = 0; | |
2824 | pSMB->SetupCount = 1; | |
2825 | pSMB->Reserved3 = 0; | |
2826 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2827 | byte_count = params + 1 /* pad */ ; | |
2828 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2829 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2830 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2831 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2832 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2833 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2834 | ||
2835 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2836 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2837 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 2838 | if (rc) { |
b6b38f70 | 2839 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
2840 | } else { |
2841 | /* decode response */ | |
50c2f753 | 2842 | |
1da177e4 | 2843 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 2844 | /* BB also check enough total bytes returned */ |
820a803f | 2845 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
2846 | rc = -EIO; /* bad smb */ |
2847 | else { | |
2848 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2849 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2850 | rc = cifs_copy_posix_acl(acl_inf, | |
2851 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2852 | buflen, acl_type, count); |
1da177e4 LT |
2853 | } |
2854 | } | |
2855 | cifs_buf_release(pSMB); | |
2856 | if (rc == -EAGAIN) | |
2857 | goto queryAclRetry; | |
2858 | return rc; | |
2859 | } | |
2860 | ||
2861 | int | |
2862 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2863 | const unsigned char *fileName, |
2864 | const char *local_acl, const int buflen, | |
2865 | const int acl_type, | |
2866 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2867 | { |
2868 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2869 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2870 | char *parm_data; | |
2871 | int name_len; | |
2872 | int rc = 0; | |
2873 | int bytes_returned = 0; | |
2874 | __u16 params, byte_count, data_count, param_offset, offset; | |
2875 | ||
b6b38f70 | 2876 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
2877 | setAclRetry: |
2878 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2879 | (void **) &pSMBr); |
1da177e4 LT |
2880 | if (rc) |
2881 | return rc; | |
2882 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2883 | name_len = | |
50c2f753 | 2884 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2885 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2886 | name_len++; /* trailing null */ |
2887 | name_len *= 2; | |
50c2f753 | 2888 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2889 | name_len = strnlen(fileName, PATH_MAX); |
2890 | name_len++; /* trailing null */ | |
2891 | strncpy(pSMB->FileName, fileName, name_len); | |
2892 | } | |
2893 | params = 6 + name_len; | |
2894 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2895 | /* BB find max SMB size from sess */ |
2896 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2897 | pSMB->MaxSetupCount = 0; |
2898 | pSMB->Reserved = 0; | |
2899 | pSMB->Flags = 0; | |
2900 | pSMB->Timeout = 0; | |
2901 | pSMB->Reserved2 = 0; | |
2902 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2903 | InformationLevel) - 4; |
1da177e4 LT |
2904 | offset = param_offset + params; |
2905 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2906 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2907 | ||
2908 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2909 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2910 | |
790fe579 | 2911 | if (data_count == 0) { |
1da177e4 LT |
2912 | rc = -EOPNOTSUPP; |
2913 | goto setACLerrorExit; | |
2914 | } | |
2915 | pSMB->DataOffset = cpu_to_le16(offset); | |
2916 | pSMB->SetupCount = 1; | |
2917 | pSMB->Reserved3 = 0; | |
2918 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2919 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2920 | byte_count = 3 /* pad */ + params + data_count; | |
2921 | pSMB->DataCount = cpu_to_le16(data_count); | |
2922 | pSMB->TotalDataCount = pSMB->DataCount; | |
2923 | pSMB->ParameterCount = cpu_to_le16(params); | |
2924 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2925 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2926 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2927 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2928 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2929 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2930 | if (rc) |
b6b38f70 | 2931 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
2932 | |
2933 | setACLerrorExit: | |
2934 | cifs_buf_release(pSMB); | |
2935 | if (rc == -EAGAIN) | |
2936 | goto setAclRetry; | |
2937 | return rc; | |
2938 | } | |
2939 | ||
f654bac2 SF |
2940 | /* BB fix tabs in this function FIXME BB */ |
2941 | int | |
2942 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 2943 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 2944 | { |
50c2f753 SF |
2945 | int rc = 0; |
2946 | struct smb_t2_qfi_req *pSMB = NULL; | |
2947 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2948 | int bytes_returned; | |
2949 | __u16 params, byte_count; | |
f654bac2 | 2950 | |
b6b38f70 | 2951 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
2952 | if (tcon == NULL) |
2953 | return -ENODEV; | |
f654bac2 SF |
2954 | |
2955 | GetExtAttrRetry: | |
790fe579 SF |
2956 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2957 | (void **) &pSMBr); | |
2958 | if (rc) | |
2959 | return rc; | |
f654bac2 | 2960 | |
ad7a2926 | 2961 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
2962 | pSMB->t2.TotalDataCount = 0; |
2963 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2964 | /* BB find exact max data count below from sess structure BB */ | |
2965 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2966 | pSMB->t2.MaxSetupCount = 0; | |
2967 | pSMB->t2.Reserved = 0; | |
2968 | pSMB->t2.Flags = 0; | |
2969 | pSMB->t2.Timeout = 0; | |
2970 | pSMB->t2.Reserved2 = 0; | |
2971 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
2972 | Fid) - 4); | |
2973 | pSMB->t2.DataCount = 0; | |
2974 | pSMB->t2.DataOffset = 0; | |
2975 | pSMB->t2.SetupCount = 1; | |
2976 | pSMB->t2.Reserved3 = 0; | |
2977 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
2978 | byte_count = params + 1 /* pad */ ; | |
2979 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
2980 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
2981 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
2982 | pSMB->Pad = 0; | |
f654bac2 | 2983 | pSMB->Fid = netfid; |
be8e3b00 | 2984 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
2985 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
2986 | ||
2987 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2988 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2989 | if (rc) { | |
b6b38f70 | 2990 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
2991 | } else { |
2992 | /* decode response */ | |
2993 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 2994 | /* BB also check enough total bytes returned */ |
820a803f | 2995 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
2996 | /* If rc should we check for EOPNOSUPP and |
2997 | disable the srvino flag? or in caller? */ | |
2998 | rc = -EIO; /* bad smb */ | |
2999 | else { | |
3000 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3001 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3002 | struct file_chattr_info *pfinfo; | |
3003 | /* BB Do we need a cast or hash here ? */ | |
3004 | if (count != 16) { | |
b6b38f70 | 3005 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3006 | rc = -EIO; |
3007 | goto GetExtAttrOut; | |
3008 | } | |
3009 | pfinfo = (struct file_chattr_info *) | |
3010 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3011 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3012 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3013 | } |
3014 | } | |
f654bac2 | 3015 | GetExtAttrOut: |
790fe579 SF |
3016 | cifs_buf_release(pSMB); |
3017 | if (rc == -EAGAIN) | |
3018 | goto GetExtAttrRetry; | |
3019 | return rc; | |
f654bac2 SF |
3020 | } |
3021 | ||
f654bac2 | 3022 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3023 | |
79df1bae JL |
3024 | #ifdef CONFIG_CIFS_ACL |
3025 | /* | |
3026 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3027 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3028 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3029 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3030 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3031 | * by caller | |
3032 | */ | |
3033 | static int | |
3034 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
3035 | const int parm_len, struct cifsTconInfo *tcon, | |
3036 | void **ret_buf) | |
3037 | { | |
3038 | int rc; | |
3039 | __u32 temp_offset; | |
3040 | struct smb_com_ntransact_req *pSMB; | |
3041 | ||
3042 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3043 | (void **)&pSMB); | |
3044 | if (rc) | |
3045 | return rc; | |
3046 | *ret_buf = (void *)pSMB; | |
3047 | pSMB->Reserved = 0; | |
3048 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3049 | pSMB->TotalDataCount = 0; | |
3050 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
3051 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3052 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3053 | pSMB->DataCount = pSMB->TotalDataCount; | |
3054 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3055 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3056 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3057 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3058 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3059 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3060 | return 0; | |
3061 | } | |
3062 | ||
3063 | static int | |
3064 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3065 | __u32 *pparmlen, __u32 *pdatalen) | |
3066 | { | |
3067 | char *end_of_smb; | |
3068 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3069 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3070 | u16 bcc; |
79df1bae JL |
3071 | |
3072 | *pdatalen = 0; | |
3073 | *pparmlen = 0; | |
3074 | ||
3075 | if (buf == NULL) | |
3076 | return -EINVAL; | |
3077 | ||
3078 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3079 | ||
820a803f JL |
3080 | bcc = get_bcc(&pSMBr->hdr); |
3081 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3082 | (char *)&pSMBr->ByteCount; |
3083 | ||
3084 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3085 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3086 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3087 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3088 | ||
3089 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3090 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3091 | ||
3092 | /* should we also check that parm and data areas do not overlap? */ | |
3093 | if (*ppparm > end_of_smb) { | |
3094 | cFYI(1, "parms start after end of smb"); | |
3095 | return -EINVAL; | |
3096 | } else if (parm_count + *ppparm > end_of_smb) { | |
3097 | cFYI(1, "parm end after end of smb"); | |
3098 | return -EINVAL; | |
3099 | } else if (*ppdata > end_of_smb) { | |
3100 | cFYI(1, "data starts after end of smb"); | |
3101 | return -EINVAL; | |
3102 | } else if (data_count + *ppdata > end_of_smb) { | |
3103 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3104 | *ppdata, data_count, (data_count + *ppdata), | |
3105 | end_of_smb, pSMBr); | |
3106 | return -EINVAL; | |
820a803f | 3107 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3108 | cFYI(1, "parm count and data count larger than SMB"); |
3109 | return -EINVAL; | |
3110 | } | |
3111 | *pdatalen = data_count; | |
3112 | *pparmlen = parm_count; | |
3113 | return 0; | |
3114 | } | |
3115 | ||
0a4b92c0 SF |
3116 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3117 | int | |
3118 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3119 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3120 | { |
3121 | int rc = 0; | |
3122 | int buf_type = 0; | |
ad7a2926 | 3123 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3124 | struct kvec iov[1]; |
3125 | ||
b6b38f70 | 3126 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3127 | |
630f3f0c SF |
3128 | *pbuflen = 0; |
3129 | *acl_inf = NULL; | |
3130 | ||
b9c7a2bb | 3131 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3132 | 8 /* parm len */, tcon, (void **) &pSMB); |
3133 | if (rc) | |
3134 | return rc; | |
3135 | ||
3136 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3137 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3138 | pSMB->MaxSetupCount = 0; | |
3139 | pSMB->Fid = fid; /* file handle always le */ | |
3140 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3141 | CIFS_ACL_DACL); | |
3142 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3143 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3144 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3145 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3146 | |
a761ac57 | 3147 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3148 | 0); |
0a4b92c0 SF |
3149 | cifs_stats_inc(&tcon->num_acl_get); |
3150 | if (rc) { | |
b6b38f70 | 3151 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3152 | } else { /* decode response */ |
ad7a2926 | 3153 | __le32 *parm; |
630f3f0c SF |
3154 | __u32 parm_len; |
3155 | __u32 acl_len; | |
50c2f753 | 3156 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3157 | char *pdata; |
0a4b92c0 SF |
3158 | |
3159 | /* validate_nttransact */ | |
50c2f753 | 3160 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3161 | &pdata, &parm_len, pbuflen); |
790fe579 | 3162 | if (rc) |
0a4b92c0 SF |
3163 | goto qsec_out; |
3164 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3165 | ||
b6b38f70 | 3166 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3167 | |
3168 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3169 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3170 | *pbuflen = 0; |
0a4b92c0 SF |
3171 | goto qsec_out; |
3172 | } | |
3173 | ||
3174 | /* BB check that data area is minimum length and as big as acl_len */ | |
3175 | ||
af6f4612 | 3176 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3177 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3178 | cERROR(1, "acl length %d does not match %d", |
3179 | acl_len, *pbuflen); | |
630f3f0c SF |
3180 | if (*pbuflen > acl_len) |
3181 | *pbuflen = acl_len; | |
3182 | } | |
0a4b92c0 | 3183 | |
630f3f0c SF |
3184 | /* check if buffer is big enough for the acl |
3185 | header followed by the smallest SID */ | |
3186 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3187 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3188 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3189 | rc = -EINVAL; |
3190 | *pbuflen = 0; | |
3191 | } else { | |
3192 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3193 | if (*acl_inf == NULL) { | |
3194 | *pbuflen = 0; | |
3195 | rc = -ENOMEM; | |
3196 | } | |
3197 | memcpy(*acl_inf, pdata, *pbuflen); | |
3198 | } | |
0a4b92c0 SF |
3199 | } |
3200 | qsec_out: | |
790fe579 | 3201 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3202 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3203 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3204 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3205 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3206 | return rc; |
3207 | } | |
97837582 SF |
3208 | |
3209 | int | |
3210 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3211 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3212 | { | |
3213 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3214 | int rc = 0; | |
3215 | int bytes_returned = 0; | |
3216 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3217 | NTRANSACT_RSP *pSMBr = NULL; | |
3218 | ||
3219 | setCifsAclRetry: | |
3220 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3221 | (void **) &pSMBr); | |
3222 | if (rc) | |
3223 | return (rc); | |
3224 | ||
3225 | pSMB->MaxSetupCount = 0; | |
3226 | pSMB->Reserved = 0; | |
3227 | ||
3228 | param_count = 8; | |
3229 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3230 | data_count = acllen; | |
3231 | data_offset = param_offset + param_count; | |
3232 | byte_count = 3 /* pad */ + param_count; | |
3233 | ||
3234 | pSMB->DataCount = cpu_to_le32(data_count); | |
3235 | pSMB->TotalDataCount = pSMB->DataCount; | |
3236 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3237 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3238 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3239 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3240 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3241 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3242 | pSMB->SetupCount = 0; | |
3243 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3244 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3245 | ||
3246 | pSMB->Fid = fid; /* file handle always le */ | |
3247 | pSMB->Reserved2 = 0; | |
3248 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3249 | ||
3250 | if (pntsd && acllen) { | |
3251 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3252 | (char *) pntsd, | |
3253 | acllen); | |
be8e3b00 | 3254 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3255 | } else |
be8e3b00 | 3256 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3257 | |
3258 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3259 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3260 | ||
b6b38f70 | 3261 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3262 | if (rc) |
b6b38f70 | 3263 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3264 | cifs_buf_release(pSMB); |
3265 | ||
3266 | if (rc == -EAGAIN) | |
3267 | goto setCifsAclRetry; | |
3268 | ||
3269 | return (rc); | |
3270 | } | |
3271 | ||
79df1bae | 3272 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3273 | |
6b8edfe0 SF |
3274 | /* Legacy Query Path Information call for lookup to old servers such |
3275 | as Win9x/WinME */ | |
3276 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3277 | const unsigned char *searchName, |
3278 | FILE_ALL_INFO *pFinfo, | |
3279 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3280 | { |
ad7a2926 SF |
3281 | QUERY_INFORMATION_REQ *pSMB; |
3282 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3283 | int rc = 0; |
3284 | int bytes_returned; | |
3285 | int name_len; | |
3286 | ||
b6b38f70 | 3287 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3288 | QInfRetry: |
3289 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3290 | (void **) &pSMBr); |
6b8edfe0 SF |
3291 | if (rc) |
3292 | return rc; | |
3293 | ||
3294 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3295 | name_len = | |
50c2f753 SF |
3296 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3297 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3298 | name_len++; /* trailing null */ |
3299 | name_len *= 2; | |
50c2f753 | 3300 | } else { |
6b8edfe0 SF |
3301 | name_len = strnlen(searchName, PATH_MAX); |
3302 | name_len++; /* trailing null */ | |
3303 | strncpy(pSMB->FileName, searchName, name_len); | |
3304 | } | |
3305 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3306 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3307 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3308 | pSMB->ByteCount = cpu_to_le16(name_len); |
3309 | ||
3310 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3311 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3312 | if (rc) { |
b6b38f70 | 3313 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3314 | } else if (pFinfo) { |
1bd5bbcb SF |
3315 | struct timespec ts; |
3316 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3317 | |
3318 | /* decode response */ | |
1bd5bbcb | 3319 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3320 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3321 | ts.tv_nsec = 0; |
3322 | ts.tv_sec = time; | |
3323 | /* decode time fields */ | |
733f99ac | 3324 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3325 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3326 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3327 | pFinfo->AllocationSize = |
3328 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3329 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3330 | pFinfo->Attributes = | |
3331 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3332 | } else |
3333 | rc = -EIO; /* bad buffer passed in */ | |
3334 | ||
3335 | cifs_buf_release(pSMB); | |
3336 | ||
3337 | if (rc == -EAGAIN) | |
3338 | goto QInfRetry; | |
3339 | ||
3340 | return rc; | |
3341 | } | |
3342 | ||
bcd5357f JL |
3343 | int |
3344 | CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3345 | u16 netfid, FILE_ALL_INFO *pFindData) | |
3346 | { | |
3347 | struct smb_t2_qfi_req *pSMB = NULL; | |
3348 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3349 | int rc = 0; | |
3350 | int bytes_returned; | |
3351 | __u16 params, byte_count; | |
3352 | ||
3353 | QFileInfoRetry: | |
3354 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3355 | (void **) &pSMBr); | |
3356 | if (rc) | |
3357 | return rc; | |
3358 | ||
3359 | params = 2 /* level */ + 2 /* fid */; | |
3360 | pSMB->t2.TotalDataCount = 0; | |
3361 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3362 | /* BB find exact max data count below from sess structure BB */ | |
3363 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3364 | pSMB->t2.MaxSetupCount = 0; | |
3365 | pSMB->t2.Reserved = 0; | |
3366 | pSMB->t2.Flags = 0; | |
3367 | pSMB->t2.Timeout = 0; | |
3368 | pSMB->t2.Reserved2 = 0; | |
3369 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3370 | Fid) - 4); | |
3371 | pSMB->t2.DataCount = 0; | |
3372 | pSMB->t2.DataOffset = 0; | |
3373 | pSMB->t2.SetupCount = 1; | |
3374 | pSMB->t2.Reserved3 = 0; | |
3375 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3376 | byte_count = params + 1 /* pad */ ; | |
3377 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3378 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3379 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3380 | pSMB->Pad = 0; | |
3381 | pSMB->Fid = netfid; | |
be8e3b00 | 3382 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3383 | |
bcd5357f JL |
3384 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3385 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3386 | if (rc) { | |
f19159dc | 3387 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3388 | } else { /* decode response */ |
3389 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3390 | |
bcd5357f JL |
3391 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3392 | rc = -EIO; | |
820a803f | 3393 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3394 | rc = -EIO; /* bad smb */ |
3395 | else if (pFindData) { | |
3396 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3397 | memcpy((char *) pFindData, | |
3398 | (char *) &pSMBr->hdr.Protocol + | |
3399 | data_offset, sizeof(FILE_ALL_INFO)); | |
3400 | } else | |
3401 | rc = -ENOMEM; | |
3402 | } | |
3403 | cifs_buf_release(pSMB); | |
3404 | if (rc == -EAGAIN) | |
3405 | goto QFileInfoRetry; | |
6b8edfe0 | 3406 | |
bcd5357f JL |
3407 | return rc; |
3408 | } | |
6b8edfe0 | 3409 | |
1da177e4 LT |
3410 | int |
3411 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3412 | const unsigned char *searchName, | |
ad7a2926 | 3413 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3414 | int legacy /* old style infolevel */, |
737b758c | 3415 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3416 | { |
3417 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3418 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3419 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3420 | int rc = 0; | |
3421 | int bytes_returned; | |
3422 | int name_len; | |
3423 | __u16 params, byte_count; | |
3424 | ||
b6b38f70 | 3425 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3426 | QPathInfoRetry: |
3427 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3428 | (void **) &pSMBr); | |
3429 | if (rc) | |
3430 | return rc; | |
3431 | ||
3432 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3433 | name_len = | |
50c2f753 | 3434 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3435 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3436 | name_len++; /* trailing null */ |
3437 | name_len *= 2; | |
50c2f753 | 3438 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3439 | name_len = strnlen(searchName, PATH_MAX); |
3440 | name_len++; /* trailing null */ | |
3441 | strncpy(pSMB->FileName, searchName, name_len); | |
3442 | } | |
3443 | ||
50c2f753 | 3444 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3445 | pSMB->TotalDataCount = 0; |
3446 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3447 | /* BB find exact max SMB PDU from sess structure BB */ |
3448 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3449 | pSMB->MaxSetupCount = 0; |
3450 | pSMB->Reserved = 0; | |
3451 | pSMB->Flags = 0; | |
3452 | pSMB->Timeout = 0; | |
3453 | pSMB->Reserved2 = 0; | |
3454 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3455 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3456 | pSMB->DataCount = 0; |
3457 | pSMB->DataOffset = 0; | |
3458 | pSMB->SetupCount = 1; | |
3459 | pSMB->Reserved3 = 0; | |
3460 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3461 | byte_count = params + 1 /* pad */ ; | |
3462 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3463 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3464 | if (legacy) |
acf1a1b1 SF |
3465 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3466 | else | |
3467 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3468 | pSMB->Reserved4 = 0; |
be8e3b00 | 3469 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3470 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3471 | ||
3472 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3473 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3474 | if (rc) { | |
b6b38f70 | 3475 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3476 | } else { /* decode response */ |
3477 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3478 | ||
acf1a1b1 SF |
3479 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3480 | rc = -EIO; | |
820a803f | 3481 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3482 | rc = -EIO; /* bad smb */ |
820a803f | 3483 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3484 | rc = -EIO; /* 24 or 26 expected but we do not read |
3485 | last field */ | |
3486 | else if (pFindData) { | |
acf1a1b1 | 3487 | int size; |
1da177e4 | 3488 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3489 | |
3490 | /* On legacy responses we do not read the last field, | |
3491 | EAsize, fortunately since it varies by subdialect and | |
3492 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3493 | bytes depending but we don't care here */ | |
3494 | if (legacy) | |
acf1a1b1 SF |
3495 | size = sizeof(FILE_INFO_STANDARD); |
3496 | else | |
3497 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3498 | memcpy((char *) pFindData, |
3499 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3500 | data_offset, size); |
1da177e4 LT |
3501 | } else |
3502 | rc = -ENOMEM; | |
3503 | } | |
3504 | cifs_buf_release(pSMB); | |
3505 | if (rc == -EAGAIN) | |
3506 | goto QPathInfoRetry; | |
3507 | ||
3508 | return rc; | |
3509 | } | |
3510 | ||
c8634fd3 JL |
3511 | int |
3512 | CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3513 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) | |
3514 | { | |
3515 | struct smb_t2_qfi_req *pSMB = NULL; | |
3516 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3517 | int rc = 0; | |
3518 | int bytes_returned; | |
3519 | __u16 params, byte_count; | |
3520 | ||
3521 | UnixQFileInfoRetry: | |
3522 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3523 | (void **) &pSMBr); | |
3524 | if (rc) | |
3525 | return rc; | |
3526 | ||
3527 | params = 2 /* level */ + 2 /* fid */; | |
3528 | pSMB->t2.TotalDataCount = 0; | |
3529 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3530 | /* BB find exact max data count below from sess structure BB */ | |
3531 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3532 | pSMB->t2.MaxSetupCount = 0; | |
3533 | pSMB->t2.Reserved = 0; | |
3534 | pSMB->t2.Flags = 0; | |
3535 | pSMB->t2.Timeout = 0; | |
3536 | pSMB->t2.Reserved2 = 0; | |
3537 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3538 | Fid) - 4); | |
3539 | pSMB->t2.DataCount = 0; | |
3540 | pSMB->t2.DataOffset = 0; | |
3541 | pSMB->t2.SetupCount = 1; | |
3542 | pSMB->t2.Reserved3 = 0; | |
3543 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3544 | byte_count = params + 1 /* pad */ ; | |
3545 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3546 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3547 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3548 | pSMB->Pad = 0; | |
3549 | pSMB->Fid = netfid; | |
be8e3b00 | 3550 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
3551 | |
3552 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3553 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3554 | if (rc) { | |
f19159dc | 3555 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3556 | } else { /* decode response */ |
3557 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3558 | ||
820a803f | 3559 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 3560 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3561 | "Unix Extensions can be disabled on mount " |
f19159dc | 3562 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3563 | rc = -EIO; /* bad smb */ |
3564 | } else { | |
3565 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3566 | memcpy((char *) pFindData, | |
3567 | (char *) &pSMBr->hdr.Protocol + | |
3568 | data_offset, | |
3569 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3570 | } | |
3571 | } | |
3572 | ||
3573 | cifs_buf_release(pSMB); | |
3574 | if (rc == -EAGAIN) | |
3575 | goto UnixQFileInfoRetry; | |
3576 | ||
3577 | return rc; | |
3578 | } | |
3579 | ||
1da177e4 LT |
3580 | int |
3581 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3582 | const unsigned char *searchName, | |
582d21e5 | 3583 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3584 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3585 | { |
3586 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3587 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3588 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3589 | int rc = 0; | |
3590 | int bytes_returned = 0; | |
3591 | int name_len; | |
3592 | __u16 params, byte_count; | |
3593 | ||
b6b38f70 | 3594 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3595 | UnixQPathInfoRetry: |
3596 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3597 | (void **) &pSMBr); | |
3598 | if (rc) | |
3599 | return rc; | |
3600 | ||
3601 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3602 | name_len = | |
b1a45695 | 3603 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3604 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3605 | name_len++; /* trailing null */ |
3606 | name_len *= 2; | |
50c2f753 | 3607 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3608 | name_len = strnlen(searchName, PATH_MAX); |
3609 | name_len++; /* trailing null */ | |
3610 | strncpy(pSMB->FileName, searchName, name_len); | |
3611 | } | |
3612 | ||
50c2f753 | 3613 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3614 | pSMB->TotalDataCount = 0; |
3615 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3616 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3617 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3618 | pSMB->MaxSetupCount = 0; |
3619 | pSMB->Reserved = 0; | |
3620 | pSMB->Flags = 0; | |
3621 | pSMB->Timeout = 0; | |
3622 | pSMB->Reserved2 = 0; | |
3623 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3624 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3625 | pSMB->DataCount = 0; |
3626 | pSMB->DataOffset = 0; | |
3627 | pSMB->SetupCount = 1; | |
3628 | pSMB->Reserved3 = 0; | |
3629 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3630 | byte_count = params + 1 /* pad */ ; | |
3631 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3632 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3633 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3634 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3635 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3636 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3637 | ||
3638 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3639 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3640 | if (rc) { | |
b6b38f70 | 3641 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3642 | } else { /* decode response */ |
3643 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3644 | ||
820a803f | 3645 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 3646 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3647 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3648 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3649 | rc = -EIO; /* bad smb */ |
3650 | } else { | |
3651 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3652 | memcpy((char *) pFindData, | |
3653 | (char *) &pSMBr->hdr.Protocol + | |
3654 | data_offset, | |
630f3f0c | 3655 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3656 | } |
3657 | } | |
3658 | cifs_buf_release(pSMB); | |
3659 | if (rc == -EAGAIN) | |
3660 | goto UnixQPathInfoRetry; | |
3661 | ||
3662 | return rc; | |
3663 | } | |
3664 | ||
1da177e4 LT |
3665 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3666 | int | |
3667 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3668 | const char *searchName, |
1da177e4 | 3669 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3670 | __u16 *pnetfid, |
3671 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3672 | { |
3673 | /* level 257 SMB_ */ | |
3674 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3675 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3676 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3677 | int rc = 0; |
3678 | int bytes_returned = 0; | |
3679 | int name_len; | |
3680 | __u16 params, byte_count; | |
3681 | ||
b6b38f70 | 3682 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3683 | |
3684 | findFirstRetry: | |
3685 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3686 | (void **) &pSMBr); | |
3687 | if (rc) | |
3688 | return rc; | |
3689 | ||
3690 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3691 | name_len = | |
50c2f753 | 3692 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3693 | PATH_MAX, nls_codepage, remap); |
3694 | /* We can not add the asterik earlier in case | |
3695 | it got remapped to 0xF03A as if it were part of the | |
3696 | directory name instead of a wildcard */ | |
1da177e4 | 3697 | name_len *= 2; |
ac67055e | 3698 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3699 | pSMB->FileName[name_len+1] = 0; |
3700 | pSMB->FileName[name_len+2] = '*'; | |
3701 | pSMB->FileName[name_len+3] = 0; | |
3702 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3703 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3704 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3705 | name_len += 2; |
1da177e4 LT |
3706 | } else { /* BB add check for overrun of SMB buf BB */ |
3707 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3708 | /* BB fix here and in unicode clause above ie |
790fe579 | 3709 | if (name_len > buffersize-header) |
1da177e4 LT |
3710 | free buffer exit; BB */ |
3711 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3712 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3713 | pSMB->FileName[name_len+1] = '*'; |
3714 | pSMB->FileName[name_len+2] = 0; | |
3715 | name_len += 3; | |
1da177e4 LT |
3716 | } |
3717 | ||
3718 | params = 12 + name_len /* includes null */ ; | |
3719 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3720 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3721 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3722 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3723 | pSMB->MaxSetupCount = 0; | |
3724 | pSMB->Reserved = 0; | |
3725 | pSMB->Flags = 0; | |
3726 | pSMB->Timeout = 0; | |
3727 | pSMB->Reserved2 = 0; | |
3728 | byte_count = params + 1 /* pad */ ; | |
3729 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3730 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3731 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3732 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3733 | - 4); | |
1da177e4 LT |
3734 | pSMB->DataCount = 0; |
3735 | pSMB->DataOffset = 0; | |
3736 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3737 | pSMB->Reserved3 = 0; | |
3738 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3739 | pSMB->SearchAttributes = | |
3740 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3741 | ATTR_DIRECTORY); | |
50c2f753 SF |
3742 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3743 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3744 | CIFS_SEARCH_RETURN_RESUME); |
3745 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3746 | ||
3747 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3748 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 3749 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3750 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3751 | ||
3752 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3753 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3754 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3755 | |
88274815 SF |
3756 | if (rc) {/* BB add logic to retry regular search if Unix search |
3757 | rejected unexpectedly by server */ | |
1da177e4 | 3758 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 3759 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 3760 | |
88274815 | 3761 | cifs_buf_release(pSMB); |
1da177e4 LT |
3762 | |
3763 | /* BB eventually could optimize out free and realloc of buf */ | |
3764 | /* for this case */ | |
3765 | if (rc == -EAGAIN) | |
3766 | goto findFirstRetry; | |
3767 | } else { /* decode response */ | |
3768 | /* BB remember to free buffer if error BB */ | |
3769 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3770 | if (rc == 0) { |
b77d753c SF |
3771 | unsigned int lnoff; |
3772 | ||
1da177e4 | 3773 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3774 | psrch_inf->unicode = true; |
1da177e4 | 3775 | else |
4b18f2a9 | 3776 | psrch_inf->unicode = false; |
1da177e4 LT |
3777 | |
3778 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3779 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3780 | psrch_inf->srch_entries_start = |
3781 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3782 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3783 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3784 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3785 | ||
790fe579 | 3786 | if (parms->EndofSearch) |
4b18f2a9 | 3787 | psrch_inf->endOfSearch = true; |
1da177e4 | 3788 | else |
4b18f2a9 | 3789 | psrch_inf->endOfSearch = false; |
1da177e4 | 3790 | |
50c2f753 SF |
3791 | psrch_inf->entries_in_buffer = |
3792 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3793 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3794 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3795 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3796 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3797 | lnoff) { | |
b6b38f70 | 3798 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3799 | psrch_inf->last_entry = NULL; |
3800 | return rc; | |
3801 | } | |
3802 | ||
0752f152 | 3803 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3804 | lnoff; |
3805 | ||
1da177e4 LT |
3806 | *pnetfid = parms->SearchHandle; |
3807 | } else { | |
3808 | cifs_buf_release(pSMB); | |
3809 | } | |
3810 | } | |
3811 | ||
3812 | return rc; | |
3813 | } | |
3814 | ||
3815 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3816 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3817 | { |
3818 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3819 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3820 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3821 | char *response_data; |
3822 | int rc = 0; | |
3823 | int bytes_returned, name_len; | |
3824 | __u16 params, byte_count; | |
3825 | ||
b6b38f70 | 3826 | cFYI(1, "In FindNext"); |
1da177e4 | 3827 | |
4b18f2a9 | 3828 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3829 | return -ENOENT; |
3830 | ||
3831 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3832 | (void **) &pSMBr); | |
3833 | if (rc) | |
3834 | return rc; | |
3835 | ||
50c2f753 | 3836 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3837 | byte_count = 0; |
3838 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3839 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3840 | pSMB->MaxDataCount = | |
50c2f753 SF |
3841 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3842 | 0xFFFFFF00); | |
1da177e4 LT |
3843 | pSMB->MaxSetupCount = 0; |
3844 | pSMB->Reserved = 0; | |
3845 | pSMB->Flags = 0; | |
3846 | pSMB->Timeout = 0; | |
3847 | pSMB->Reserved2 = 0; | |
3848 | pSMB->ParameterOffset = cpu_to_le16( | |
3849 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3850 | pSMB->DataCount = 0; | |
3851 | pSMB->DataOffset = 0; | |
3852 | pSMB->SetupCount = 1; | |
3853 | pSMB->Reserved3 = 0; | |
3854 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3855 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3856 | pSMB->SearchCount = | |
630f3f0c | 3857 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3858 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3859 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3860 | pSMB->SearchFlags = | |
3861 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3862 | ||
3863 | name_len = psrch_inf->resume_name_len; | |
3864 | params += name_len; | |
790fe579 | 3865 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3866 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3867 | byte_count += name_len; | |
ef6724e3 SF |
3868 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3869 | pSMB->ResumeFileName[name_len] = 0; | |
3870 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3871 | } else { |
3872 | rc = -EINVAL; | |
3873 | goto FNext2_err_exit; | |
3874 | } | |
3875 | byte_count = params + 1 /* pad */ ; | |
3876 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3877 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 3878 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 3879 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 3880 | |
1da177e4 LT |
3881 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3882 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3883 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3884 | if (rc) { |
3885 | if (rc == -EBADF) { | |
4b18f2a9 | 3886 | psrch_inf->endOfSearch = true; |
6353450a | 3887 | cifs_buf_release(pSMB); |
50c2f753 | 3888 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 3889 | } else |
b6b38f70 | 3890 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
3891 | } else { /* decode response */ |
3892 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3893 | |
790fe579 | 3894 | if (rc == 0) { |
b77d753c SF |
3895 | unsigned int lnoff; |
3896 | ||
1da177e4 LT |
3897 | /* BB fixme add lock for file (srch_info) struct here */ |
3898 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3899 | psrch_inf->unicode = true; |
1da177e4 | 3900 | else |
4b18f2a9 | 3901 | psrch_inf->unicode = false; |
1da177e4 LT |
3902 | response_data = (char *) &pSMBr->hdr.Protocol + |
3903 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3904 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3905 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3906 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3907 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3908 | cifs_small_buf_release( |
3909 | psrch_inf->ntwrk_buf_start); | |
3910 | else | |
3911 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3912 | psrch_inf->srch_entries_start = response_data; |
3913 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3914 | psrch_inf->smallBuf = 0; |
790fe579 | 3915 | if (parms->EndofSearch) |
4b18f2a9 | 3916 | psrch_inf->endOfSearch = true; |
1da177e4 | 3917 | else |
4b18f2a9 | 3918 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3919 | psrch_inf->entries_in_buffer = |
3920 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3921 | psrch_inf->index_of_last_entry += |
3922 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3923 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3924 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3925 | lnoff) { | |
b6b38f70 | 3926 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3927 | psrch_inf->last_entry = NULL; |
3928 | return rc; | |
3929 | } else | |
3930 | psrch_inf->last_entry = | |
3931 | psrch_inf->srch_entries_start + lnoff; | |
3932 | ||
b6b38f70 JP |
3933 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
3934 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
3935 | |
3936 | /* BB fixme add unlock here */ | |
3937 | } | |
3938 | ||
3939 | } | |
3940 | ||
3941 | /* BB On error, should we leave previous search buf (and count and | |
3942 | last entry fields) intact or free the previous one? */ | |
3943 | ||
3944 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3945 | since file handle passed in no longer valid */ | |
3946 | FNext2_err_exit: | |
3947 | if (rc != 0) | |
3948 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3949 | return rc; |
3950 | } | |
3951 | ||
3952 | int | |
50c2f753 SF |
3953 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3954 | const __u16 searchHandle) | |
1da177e4 LT |
3955 | { |
3956 | int rc = 0; | |
3957 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 3958 | |
b6b38f70 | 3959 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
3960 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
3961 | ||
3962 | /* no sense returning error if session restarted | |
3963 | as file handle has been closed */ | |
790fe579 | 3964 | if (rc == -EAGAIN) |
1da177e4 LT |
3965 | return 0; |
3966 | if (rc) | |
3967 | return rc; | |
3968 | ||
1da177e4 LT |
3969 | pSMB->FileID = searchHandle; |
3970 | pSMB->ByteCount = 0; | |
133672ef | 3971 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3972 | if (rc) |
b6b38f70 | 3973 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 3974 | |
a4544347 | 3975 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3976 | |
3977 | /* Since session is dead, search handle closed on server already */ | |
3978 | if (rc == -EAGAIN) | |
3979 | rc = 0; | |
3980 | ||
3981 | return rc; | |
3982 | } | |
3983 | ||
1da177e4 LT |
3984 | int |
3985 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3986 | const unsigned char *searchName, |
ad7a2926 | 3987 | __u64 *inode_number, |
50c2f753 | 3988 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3989 | { |
3990 | int rc = 0; | |
3991 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3992 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3993 | int name_len, bytes_returned; | |
3994 | __u16 params, byte_count; | |
3995 | ||
b6b38f70 | 3996 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 3997 | if (tcon == NULL) |
50c2f753 | 3998 | return -ENODEV; |
1da177e4 LT |
3999 | |
4000 | GetInodeNumberRetry: | |
4001 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4002 | (void **) &pSMBr); |
1da177e4 LT |
4003 | if (rc) |
4004 | return rc; | |
4005 | ||
1da177e4 LT |
4006 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4007 | name_len = | |
b1a45695 | 4008 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 4009 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4010 | name_len++; /* trailing null */ |
4011 | name_len *= 2; | |
50c2f753 | 4012 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4013 | name_len = strnlen(searchName, PATH_MAX); |
4014 | name_len++; /* trailing null */ | |
4015 | strncpy(pSMB->FileName, searchName, name_len); | |
4016 | } | |
4017 | ||
4018 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4019 | pSMB->TotalDataCount = 0; | |
4020 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4021 | /* BB find exact max data count below from sess structure BB */ | |
4022 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4023 | pSMB->MaxSetupCount = 0; | |
4024 | pSMB->Reserved = 0; | |
4025 | pSMB->Flags = 0; | |
4026 | pSMB->Timeout = 0; | |
4027 | pSMB->Reserved2 = 0; | |
4028 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4029 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4030 | pSMB->DataCount = 0; |
4031 | pSMB->DataOffset = 0; | |
4032 | pSMB->SetupCount = 1; | |
4033 | pSMB->Reserved3 = 0; | |
4034 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4035 | byte_count = params + 1 /* pad */ ; | |
4036 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4037 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4038 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4039 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4040 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4041 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4042 | ||
4043 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4044 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4045 | if (rc) { | |
b6b38f70 | 4046 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4047 | } else { |
4048 | /* decode response */ | |
4049 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4050 | /* BB also check enough total bytes returned */ |
820a803f | 4051 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4052 | /* If rc should we check for EOPNOSUPP and |
4053 | disable the srvino flag? or in caller? */ | |
4054 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4055 | else { |
1da177e4 LT |
4056 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4057 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4058 | struct file_internal_info *pfinfo; |
1da177e4 | 4059 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4060 | if (count < 8) { |
b6b38f70 | 4061 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4062 | rc = -EIO; |
4063 | goto GetInodeNumOut; | |
4064 | } | |
4065 | pfinfo = (struct file_internal_info *) | |
4066 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4067 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4068 | } |
4069 | } | |
4070 | GetInodeNumOut: | |
4071 | cifs_buf_release(pSMB); | |
4072 | if (rc == -EAGAIN) | |
4073 | goto GetInodeNumberRetry; | |
4074 | return rc; | |
4075 | } | |
1da177e4 | 4076 | |
fec4585f IM |
4077 | /* parses DFS refferal V3 structure |
4078 | * caller is responsible for freeing target_nodes | |
4079 | * returns: | |
4080 | * on success - 0 | |
4081 | * on failure - errno | |
4082 | */ | |
4083 | static int | |
a1fe78f1 | 4084 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4085 | unsigned int *num_of_nodes, |
4086 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4087 | const struct nls_table *nls_codepage, int remap, |
4088 | const char *searchName) | |
fec4585f IM |
4089 | { |
4090 | int i, rc = 0; | |
4091 | char *data_end; | |
4092 | bool is_unicode; | |
4093 | struct dfs_referral_level_3 *ref; | |
4094 | ||
5ca33c6a HH |
4095 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4096 | is_unicode = true; | |
4097 | else | |
4098 | is_unicode = false; | |
fec4585f IM |
4099 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4100 | ||
4101 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4102 | cERROR(1, "num_referrals: must be at least > 0," |
4103 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4104 | rc = -EINVAL; |
a1fe78f1 | 4105 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4106 | } |
4107 | ||
4108 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4109 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4110 | cERROR(1, "Referrals of V%d version are not supported," |
4111 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4112 | rc = -EINVAL; |
a1fe78f1 | 4113 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4114 | } |
4115 | ||
4116 | /* get the upper boundary of the resp buffer */ | |
4117 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4118 | le16_to_cpu(pSMBr->t2.DataCount); | |
4119 | ||
f19159dc | 4120 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4121 | *num_of_nodes, |
b6b38f70 | 4122 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4123 | |
4124 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4125 | *num_of_nodes, GFP_KERNEL); | |
4126 | if (*target_nodes == NULL) { | |
b6b38f70 | 4127 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4128 | rc = -ENOMEM; |
a1fe78f1 | 4129 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4130 | } |
4131 | ||
3ad2f3fb | 4132 | /* collect necessary data from referrals */ |
fec4585f IM |
4133 | for (i = 0; i < *num_of_nodes; i++) { |
4134 | char *temp; | |
4135 | int max_len; | |
4136 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4137 | ||
0e0d2cf3 | 4138 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4139 | if (is_unicode) { |
331c3135 JL |
4140 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4141 | GFP_KERNEL); | |
2920ee2b SF |
4142 | if (tmp == NULL) { |
4143 | rc = -ENOMEM; | |
4144 | goto parse_DFS_referrals_exit; | |
4145 | } | |
2c55608f IM |
4146 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4147 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4148 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4149 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4150 | nls_codepage); |
4151 | kfree(tmp); | |
4152 | } else | |
4153 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4154 | ||
fec4585f IM |
4155 | node->server_type = le16_to_cpu(ref->ServerType); |
4156 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4157 | ||
4158 | /* copy DfsPath */ | |
4159 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4160 | max_len = data_end - temp; | |
d185cda7 SF |
4161 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4162 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4163 | if (!node->path_name) { |
4164 | rc = -ENOMEM; | |
a1fe78f1 | 4165 | goto parse_DFS_referrals_exit; |
066ce689 | 4166 | } |
fec4585f IM |
4167 | |
4168 | /* copy link target UNC */ | |
4169 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4170 | max_len = data_end - temp; | |
d185cda7 SF |
4171 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4172 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4173 | if (!node->node_name) |
4174 | rc = -ENOMEM; | |
fec4585f IM |
4175 | } |
4176 | ||
a1fe78f1 | 4177 | parse_DFS_referrals_exit: |
fec4585f IM |
4178 | if (rc) { |
4179 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4180 | *target_nodes = NULL; | |
4181 | *num_of_nodes = 0; | |
4182 | } | |
4183 | return rc; | |
4184 | } | |
4185 | ||
1da177e4 LT |
4186 | int |
4187 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
4188 | const unsigned char *searchName, | |
c2cf07d5 SF |
4189 | struct dfs_info3_param **target_nodes, |
4190 | unsigned int *num_of_nodes, | |
737b758c | 4191 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4192 | { |
4193 | /* TRANS2_GET_DFS_REFERRAL */ | |
4194 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4195 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4196 | int rc = 0; |
4197 | int bytes_returned; | |
4198 | int name_len; | |
1da177e4 | 4199 | __u16 params, byte_count; |
c2cf07d5 SF |
4200 | *num_of_nodes = 0; |
4201 | *target_nodes = NULL; | |
1da177e4 | 4202 | |
b6b38f70 | 4203 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4204 | if (ses == NULL) |
4205 | return -ENODEV; | |
4206 | getDFSRetry: | |
4207 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4208 | (void **) &pSMBr); | |
4209 | if (rc) | |
4210 | return rc; | |
50c2f753 SF |
4211 | |
4212 | /* server pointer checked in called function, | |
1982c344 SF |
4213 | but should never be null here anyway */ |
4214 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4215 | pSMB->hdr.Tid = ses->ipc_tid; |
4216 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4217 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4218 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4219 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4220 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4221 | |
4222 | if (ses->capabilities & CAP_UNICODE) { | |
4223 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4224 | name_len = | |
b1a45695 | 4225 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4226 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4227 | name_len++; /* trailing null */ |
4228 | name_len *= 2; | |
50c2f753 | 4229 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4230 | name_len = strnlen(searchName, PATH_MAX); |
4231 | name_len++; /* trailing null */ | |
4232 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4233 | } | |
4234 | ||
790fe579 SF |
4235 | if (ses->server) { |
4236 | if (ses->server->secMode & | |
1a4e15a0 SF |
4237 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4238 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4239 | } | |
4240 | ||
50c2f753 | 4241 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4242 | |
1da177e4 LT |
4243 | params = 2 /* level */ + name_len /*includes null */ ; |
4244 | pSMB->TotalDataCount = 0; | |
4245 | pSMB->DataCount = 0; | |
4246 | pSMB->DataOffset = 0; | |
4247 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4248 | /* BB find exact max SMB PDU from sess structure BB */ |
4249 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4250 | pSMB->MaxSetupCount = 0; |
4251 | pSMB->Reserved = 0; | |
4252 | pSMB->Flags = 0; | |
4253 | pSMB->Timeout = 0; | |
4254 | pSMB->Reserved2 = 0; | |
4255 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4256 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4257 | pSMB->SetupCount = 1; |
4258 | pSMB->Reserved3 = 0; | |
4259 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4260 | byte_count = params + 3 /* pad */ ; | |
4261 | pSMB->ParameterCount = cpu_to_le16(params); | |
4262 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4263 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4264 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4265 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4266 | ||
4267 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4268 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4269 | if (rc) { | |
b6b38f70 | 4270 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4271 | goto GetDFSRefExit; |
4272 | } | |
4273 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4274 | |
c2cf07d5 | 4275 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4276 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4277 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4278 | goto GetDFSRefExit; |
4279 | } | |
c2cf07d5 | 4280 | |
b6b38f70 | 4281 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4282 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4283 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4284 | |
fec4585f | 4285 | /* parse returned result into more usable form */ |
a1fe78f1 | 4286 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4287 | target_nodes, nls_codepage, remap, |
4288 | searchName); | |
c2cf07d5 | 4289 | |
1da177e4 | 4290 | GetDFSRefExit: |
0d817bc0 | 4291 | cifs_buf_release(pSMB); |
1da177e4 LT |
4292 | |
4293 | if (rc == -EAGAIN) | |
4294 | goto getDFSRetry; | |
4295 | ||
4296 | return rc; | |
4297 | } | |
4298 | ||
20962438 SF |
4299 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4300 | int | |
4301 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4302 | { | |
4303 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4304 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4305 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4306 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4307 | int rc = 0; | |
4308 | int bytes_returned = 0; | |
4309 | __u16 params, byte_count; | |
4310 | ||
b6b38f70 | 4311 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4312 | oldQFSInfoRetry: |
4313 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4314 | (void **) &pSMBr); | |
4315 | if (rc) | |
4316 | return rc; | |
20962438 SF |
4317 | |
4318 | params = 2; /* level */ | |
4319 | pSMB->TotalDataCount = 0; | |
4320 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4321 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4322 | pSMB->MaxSetupCount = 0; | |
4323 | pSMB->Reserved = 0; | |
4324 | pSMB->Flags = 0; | |
4325 | pSMB->Timeout = 0; | |
4326 | pSMB->Reserved2 = 0; | |
4327 | byte_count = params + 1 /* pad */ ; | |
4328 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4329 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4330 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4331 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4332 | pSMB->DataCount = 0; | |
4333 | pSMB->DataOffset = 0; | |
4334 | pSMB->SetupCount = 1; | |
4335 | pSMB->Reserved3 = 0; | |
4336 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4337 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4338 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4339 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4340 | ||
4341 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4342 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4343 | if (rc) { | |
b6b38f70 | 4344 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4345 | } else { /* decode response */ |
4346 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4347 | ||
820a803f | 4348 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4349 | rc = -EIO; /* bad smb */ |
4350 | else { | |
4351 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4352 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4353 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4354 | |
50c2f753 | 4355 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4356 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4357 | FSData->f_bsize = | |
4358 | le16_to_cpu(response_data->BytesPerSector) * | |
4359 | le32_to_cpu(response_data-> | |
4360 | SectorsPerAllocationUnit); | |
4361 | FSData->f_blocks = | |
50c2f753 | 4362 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4363 | FSData->f_bfree = FSData->f_bavail = |
4364 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4365 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4366 | (unsigned long long)FSData->f_blocks, | |
4367 | (unsigned long long)FSData->f_bfree, | |
4368 | FSData->f_bsize); | |
20962438 SF |
4369 | } |
4370 | } | |
4371 | cifs_buf_release(pSMB); | |
4372 | ||
4373 | if (rc == -EAGAIN) | |
4374 | goto oldQFSInfoRetry; | |
4375 | ||
4376 | return rc; | |
4377 | } | |
4378 | ||
1da177e4 | 4379 | int |
737b758c | 4380 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4381 | { |
4382 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4383 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4384 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4385 | FILE_SYSTEM_INFO *response_data; | |
4386 | int rc = 0; | |
4387 | int bytes_returned = 0; | |
4388 | __u16 params, byte_count; | |
4389 | ||
b6b38f70 | 4390 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4391 | QFSInfoRetry: |
4392 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4393 | (void **) &pSMBr); | |
4394 | if (rc) | |
4395 | return rc; | |
4396 | ||
4397 | params = 2; /* level */ | |
4398 | pSMB->TotalDataCount = 0; | |
4399 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4400 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4401 | pSMB->MaxSetupCount = 0; |
4402 | pSMB->Reserved = 0; | |
4403 | pSMB->Flags = 0; | |
4404 | pSMB->Timeout = 0; | |
4405 | pSMB->Reserved2 = 0; | |
4406 | byte_count = params + 1 /* pad */ ; | |
4407 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4408 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4409 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4410 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4411 | pSMB->DataCount = 0; |
4412 | pSMB->DataOffset = 0; | |
4413 | pSMB->SetupCount = 1; | |
4414 | pSMB->Reserved3 = 0; | |
4415 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4416 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4417 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4418 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4419 | ||
4420 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4421 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4422 | if (rc) { | |
b6b38f70 | 4423 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4424 | } else { /* decode response */ |
50c2f753 | 4425 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4426 | |
820a803f | 4427 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4428 | rc = -EIO; /* bad smb */ |
4429 | else { | |
4430 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4431 | |
4432 | response_data = | |
4433 | (FILE_SYSTEM_INFO | |
4434 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4435 | data_offset); | |
4436 | FSData->f_bsize = | |
4437 | le32_to_cpu(response_data->BytesPerSector) * | |
4438 | le32_to_cpu(response_data-> | |
4439 | SectorsPerAllocationUnit); | |
4440 | FSData->f_blocks = | |
4441 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4442 | FSData->f_bfree = FSData->f_bavail = | |
4443 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4444 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4445 | (unsigned long long)FSData->f_blocks, | |
4446 | (unsigned long long)FSData->f_bfree, | |
4447 | FSData->f_bsize); | |
1da177e4 LT |
4448 | } |
4449 | } | |
4450 | cifs_buf_release(pSMB); | |
4451 | ||
4452 | if (rc == -EAGAIN) | |
4453 | goto QFSInfoRetry; | |
4454 | ||
4455 | return rc; | |
4456 | } | |
4457 | ||
4458 | int | |
737b758c | 4459 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4460 | { |
4461 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4462 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4463 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4464 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4465 | int rc = 0; | |
4466 | int bytes_returned = 0; | |
4467 | __u16 params, byte_count; | |
4468 | ||
b6b38f70 | 4469 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4470 | QFSAttributeRetry: |
4471 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4472 | (void **) &pSMBr); | |
4473 | if (rc) | |
4474 | return rc; | |
4475 | ||
4476 | params = 2; /* level */ | |
4477 | pSMB->TotalDataCount = 0; | |
4478 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4479 | /* BB find exact max SMB PDU from sess structure BB */ |
4480 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4481 | pSMB->MaxSetupCount = 0; |
4482 | pSMB->Reserved = 0; | |
4483 | pSMB->Flags = 0; | |
4484 | pSMB->Timeout = 0; | |
4485 | pSMB->Reserved2 = 0; | |
4486 | byte_count = params + 1 /* pad */ ; | |
4487 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4488 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4489 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4490 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4491 | pSMB->DataCount = 0; |
4492 | pSMB->DataOffset = 0; | |
4493 | pSMB->SetupCount = 1; | |
4494 | pSMB->Reserved3 = 0; | |
4495 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4496 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4497 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4498 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4499 | ||
4500 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4501 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4502 | if (rc) { | |
b6b38f70 | 4503 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4504 | } else { /* decode response */ |
4505 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4506 | ||
820a803f | 4507 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4508 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4509 | rc = -EIO; /* bad smb */ |
4510 | } else { | |
4511 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4512 | response_data = | |
4513 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4514 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4515 | data_offset); | |
4516 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4517 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4518 | } |
4519 | } | |
4520 | cifs_buf_release(pSMB); | |
4521 | ||
4522 | if (rc == -EAGAIN) | |
4523 | goto QFSAttributeRetry; | |
4524 | ||
4525 | return rc; | |
4526 | } | |
4527 | ||
4528 | int | |
737b758c | 4529 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4530 | { |
4531 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4532 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4533 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4534 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4535 | int rc = 0; | |
4536 | int bytes_returned = 0; | |
4537 | __u16 params, byte_count; | |
4538 | ||
b6b38f70 | 4539 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4540 | QFSDeviceRetry: |
4541 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4542 | (void **) &pSMBr); | |
4543 | if (rc) | |
4544 | return rc; | |
4545 | ||
4546 | params = 2; /* level */ | |
4547 | pSMB->TotalDataCount = 0; | |
4548 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4549 | /* BB find exact max SMB PDU from sess structure BB */ |
4550 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4551 | pSMB->MaxSetupCount = 0; |
4552 | pSMB->Reserved = 0; | |
4553 | pSMB->Flags = 0; | |
4554 | pSMB->Timeout = 0; | |
4555 | pSMB->Reserved2 = 0; | |
4556 | byte_count = params + 1 /* pad */ ; | |
4557 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4558 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4559 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4560 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4561 | |
4562 | pSMB->DataCount = 0; | |
4563 | pSMB->DataOffset = 0; | |
4564 | pSMB->SetupCount = 1; | |
4565 | pSMB->Reserved3 = 0; | |
4566 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4567 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4568 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4569 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4570 | ||
4571 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4572 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4573 | if (rc) { | |
b6b38f70 | 4574 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4575 | } else { /* decode response */ |
4576 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4577 | ||
820a803f JL |
4578 | if (rc || get_bcc(&pSMBr->hdr) < |
4579 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4580 | rc = -EIO; /* bad smb */ |
4581 | else { | |
4582 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4583 | response_data = | |
737b758c SF |
4584 | (FILE_SYSTEM_DEVICE_INFO *) |
4585 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4586 | data_offset); |
4587 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4588 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4589 | } |
4590 | } | |
4591 | cifs_buf_release(pSMB); | |
4592 | ||
4593 | if (rc == -EAGAIN) | |
4594 | goto QFSDeviceRetry; | |
4595 | ||
4596 | return rc; | |
4597 | } | |
4598 | ||
4599 | int | |
737b758c | 4600 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4601 | { |
4602 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4603 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4604 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4605 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4606 | int rc = 0; | |
4607 | int bytes_returned = 0; | |
4608 | __u16 params, byte_count; | |
4609 | ||
b6b38f70 | 4610 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 4611 | QFSUnixRetry: |
f569599a JL |
4612 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4613 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4614 | if (rc) |
4615 | return rc; | |
4616 | ||
4617 | params = 2; /* level */ | |
4618 | pSMB->TotalDataCount = 0; | |
4619 | pSMB->DataCount = 0; | |
4620 | pSMB->DataOffset = 0; | |
4621 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4622 | /* BB find exact max SMB PDU from sess structure BB */ |
4623 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4624 | pSMB->MaxSetupCount = 0; |
4625 | pSMB->Reserved = 0; | |
4626 | pSMB->Flags = 0; | |
4627 | pSMB->Timeout = 0; | |
4628 | pSMB->Reserved2 = 0; | |
4629 | byte_count = params + 1 /* pad */ ; | |
4630 | pSMB->ParameterCount = cpu_to_le16(params); | |
4631 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4632 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4633 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4634 | pSMB->SetupCount = 1; |
4635 | pSMB->Reserved3 = 0; | |
4636 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4637 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4638 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4639 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4640 | ||
4641 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4642 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4643 | if (rc) { | |
b6b38f70 | 4644 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4645 | } else { /* decode response */ |
4646 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4647 | ||
820a803f | 4648 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4649 | rc = -EIO; /* bad smb */ |
4650 | } else { | |
4651 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4652 | response_data = | |
4653 | (FILE_SYSTEM_UNIX_INFO | |
4654 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4655 | data_offset); | |
4656 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4657 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4658 | } |
4659 | } | |
4660 | cifs_buf_release(pSMB); | |
4661 | ||
4662 | if (rc == -EAGAIN) | |
4663 | goto QFSUnixRetry; | |
4664 | ||
4665 | ||
4666 | return rc; | |
4667 | } | |
4668 | ||
ac67055e | 4669 | int |
45abc6ee | 4670 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4671 | { |
4672 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4673 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4674 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4675 | int rc = 0; | |
4676 | int bytes_returned = 0; | |
4677 | __u16 params, param_offset, offset, byte_count; | |
4678 | ||
b6b38f70 | 4679 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4680 | SETFSUnixRetry: |
f26282c9 | 4681 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4682 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4683 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4684 | if (rc) |
4685 | return rc; | |
4686 | ||
4687 | params = 4; /* 2 bytes zero followed by info level. */ | |
4688 | pSMB->MaxSetupCount = 0; | |
4689 | pSMB->Reserved = 0; | |
4690 | pSMB->Flags = 0; | |
4691 | pSMB->Timeout = 0; | |
4692 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4693 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4694 | - 4; | |
ac67055e JA |
4695 | offset = param_offset + params; |
4696 | ||
4697 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4698 | /* BB find exact max SMB PDU from sess structure BB */ |
4699 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4700 | pSMB->SetupCount = 1; |
4701 | pSMB->Reserved3 = 0; | |
4702 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4703 | byte_count = 1 /* pad */ + params + 12; | |
4704 | ||
4705 | pSMB->DataCount = cpu_to_le16(12); | |
4706 | pSMB->ParameterCount = cpu_to_le16(params); | |
4707 | pSMB->TotalDataCount = pSMB->DataCount; | |
4708 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4709 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4710 | pSMB->DataOffset = cpu_to_le16(offset); | |
4711 | ||
4712 | /* Params. */ | |
4713 | pSMB->FileNum = 0; | |
4714 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4715 | ||
4716 | /* Data. */ | |
4717 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4718 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4719 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4720 | ||
be8e3b00 | 4721 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4722 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4723 | ||
4724 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4725 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4726 | if (rc) { | |
b6b38f70 | 4727 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4728 | } else { /* decode response */ |
4729 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4730 | if (rc) |
ac67055e | 4731 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4732 | } |
4733 | cifs_buf_release(pSMB); | |
4734 | ||
4735 | if (rc == -EAGAIN) | |
4736 | goto SETFSUnixRetry; | |
4737 | ||
4738 | return rc; | |
4739 | } | |
4740 | ||
4741 | ||
1da177e4 LT |
4742 | |
4743 | int | |
4744 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4745 | struct kstatfs *FSData) |
1da177e4 LT |
4746 | { |
4747 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4748 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4749 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4750 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4751 | int rc = 0; | |
4752 | int bytes_returned = 0; | |
4753 | __u16 params, byte_count; | |
4754 | ||
b6b38f70 | 4755 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
4756 | QFSPosixRetry: |
4757 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4758 | (void **) &pSMBr); | |
4759 | if (rc) | |
4760 | return rc; | |
4761 | ||
4762 | params = 2; /* level */ | |
4763 | pSMB->TotalDataCount = 0; | |
4764 | pSMB->DataCount = 0; | |
4765 | pSMB->DataOffset = 0; | |
4766 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4767 | /* BB find exact max SMB PDU from sess structure BB */ |
4768 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4769 | pSMB->MaxSetupCount = 0; |
4770 | pSMB->Reserved = 0; | |
4771 | pSMB->Flags = 0; | |
4772 | pSMB->Timeout = 0; | |
4773 | pSMB->Reserved2 = 0; | |
4774 | byte_count = params + 1 /* pad */ ; | |
4775 | pSMB->ParameterCount = cpu_to_le16(params); | |
4776 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4777 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4778 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4779 | pSMB->SetupCount = 1; |
4780 | pSMB->Reserved3 = 0; | |
4781 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4782 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 4783 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4784 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4785 | ||
4786 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4787 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4788 | if (rc) { | |
b6b38f70 | 4789 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4790 | } else { /* decode response */ |
4791 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4792 | ||
820a803f | 4793 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4794 | rc = -EIO; /* bad smb */ |
4795 | } else { | |
4796 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4797 | response_data = | |
4798 | (FILE_SYSTEM_POSIX_INFO | |
4799 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4800 | data_offset); | |
4801 | FSData->f_bsize = | |
4802 | le32_to_cpu(response_data->BlockSize); | |
4803 | FSData->f_blocks = | |
4804 | le64_to_cpu(response_data->TotalBlocks); | |
4805 | FSData->f_bfree = | |
4806 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4807 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4808 | FSData->f_bavail = FSData->f_bfree; |
4809 | } else { | |
4810 | FSData->f_bavail = | |
50c2f753 | 4811 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4812 | } |
790fe579 | 4813 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4814 | FSData->f_files = |
50c2f753 | 4815 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4816 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4817 | FSData->f_ffree = |
50c2f753 | 4818 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4819 | } |
4820 | } | |
4821 | cifs_buf_release(pSMB); | |
4822 | ||
4823 | if (rc == -EAGAIN) | |
4824 | goto QFSPosixRetry; | |
4825 | ||
4826 | return rc; | |
4827 | } | |
4828 | ||
4829 | ||
50c2f753 SF |
4830 | /* We can not use write of zero bytes trick to |
4831 | set file size due to need for large file support. Also note that | |
4832 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4833 | routine which is only needed to work around a sharing violation bug |
4834 | in Samba which this routine can run into */ | |
4835 | ||
4836 | int | |
4837 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4838 | __u64 size, bool SetAllocation, |
737b758c | 4839 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4840 | { |
4841 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4842 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4843 | struct file_end_of_file_info *parm_data; | |
4844 | int name_len; | |
4845 | int rc = 0; | |
4846 | int bytes_returned = 0; | |
4847 | __u16 params, byte_count, data_count, param_offset, offset; | |
4848 | ||
b6b38f70 | 4849 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
4850 | SetEOFRetry: |
4851 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4852 | (void **) &pSMBr); | |
4853 | if (rc) | |
4854 | return rc; | |
4855 | ||
4856 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4857 | name_len = | |
b1a45695 | 4858 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4859 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4860 | name_len++; /* trailing null */ |
4861 | name_len *= 2; | |
3e87d803 | 4862 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4863 | name_len = strnlen(fileName, PATH_MAX); |
4864 | name_len++; /* trailing null */ | |
4865 | strncpy(pSMB->FileName, fileName, name_len); | |
4866 | } | |
4867 | params = 6 + name_len; | |
26f57364 | 4868 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4869 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4870 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4871 | pSMB->MaxSetupCount = 0; |
4872 | pSMB->Reserved = 0; | |
4873 | pSMB->Flags = 0; | |
4874 | pSMB->Timeout = 0; | |
4875 | pSMB->Reserved2 = 0; | |
4876 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4877 | InformationLevel) - 4; |
1da177e4 | 4878 | offset = param_offset + params; |
790fe579 | 4879 | if (SetAllocation) { |
50c2f753 SF |
4880 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4881 | pSMB->InformationLevel = | |
4882 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4883 | else | |
4884 | pSMB->InformationLevel = | |
4885 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4886 | } else /* Set File Size */ { | |
1da177e4 LT |
4887 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4888 | pSMB->InformationLevel = | |
50c2f753 | 4889 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4890 | else |
4891 | pSMB->InformationLevel = | |
50c2f753 | 4892 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4893 | } |
4894 | ||
4895 | parm_data = | |
4896 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4897 | offset); | |
4898 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4899 | pSMB->DataOffset = cpu_to_le16(offset); | |
4900 | pSMB->SetupCount = 1; | |
4901 | pSMB->Reserved3 = 0; | |
4902 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4903 | byte_count = 3 /* pad */ + params + data_count; | |
4904 | pSMB->DataCount = cpu_to_le16(data_count); | |
4905 | pSMB->TotalDataCount = pSMB->DataCount; | |
4906 | pSMB->ParameterCount = cpu_to_le16(params); | |
4907 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4908 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4909 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4910 | parm_data->FileSize = cpu_to_le64(size); |
4911 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4912 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4913 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4914 | if (rc) |
b6b38f70 | 4915 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
4916 | |
4917 | cifs_buf_release(pSMB); | |
4918 | ||
4919 | if (rc == -EAGAIN) | |
4920 | goto SetEOFRetry; | |
4921 | ||
4922 | return rc; | |
4923 | } | |
4924 | ||
4925 | int | |
50c2f753 | 4926 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4927 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4928 | { |
4929 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4930 | struct file_end_of_file_info *parm_data; |
4931 | int rc = 0; | |
1da177e4 LT |
4932 | __u16 params, param_offset, offset, byte_count, count; |
4933 | ||
b6b38f70 JP |
4934 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
4935 | (long long)size); | |
cd63499c SF |
4936 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4937 | ||
1da177e4 LT |
4938 | if (rc) |
4939 | return rc; | |
4940 | ||
4941 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4942 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4943 | |
1da177e4 LT |
4944 | params = 6; |
4945 | pSMB->MaxSetupCount = 0; | |
4946 | pSMB->Reserved = 0; | |
4947 | pSMB->Flags = 0; | |
4948 | pSMB->Timeout = 0; | |
4949 | pSMB->Reserved2 = 0; | |
4950 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4951 | offset = param_offset + params; | |
4952 | ||
1da177e4 LT |
4953 | count = sizeof(struct file_end_of_file_info); |
4954 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4955 | /* BB find exact max SMB PDU from sess structure BB */ |
4956 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4957 | pSMB->SetupCount = 1; |
4958 | pSMB->Reserved3 = 0; | |
4959 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4960 | byte_count = 3 /* pad */ + params + count; | |
4961 | pSMB->DataCount = cpu_to_le16(count); | |
4962 | pSMB->ParameterCount = cpu_to_le16(params); | |
4963 | pSMB->TotalDataCount = pSMB->DataCount; | |
4964 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4965 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4966 | parm_data = | |
50c2f753 SF |
4967 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4968 | + offset); | |
1da177e4 LT |
4969 | pSMB->DataOffset = cpu_to_le16(offset); |
4970 | parm_data->FileSize = cpu_to_le64(size); | |
4971 | pSMB->Fid = fid; | |
790fe579 | 4972 | if (SetAllocation) { |
1da177e4 LT |
4973 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4974 | pSMB->InformationLevel = | |
4975 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4976 | else | |
4977 | pSMB->InformationLevel = | |
4978 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4979 | } else /* Set File Size */ { |
1da177e4 LT |
4980 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4981 | pSMB->InformationLevel = | |
50c2f753 | 4982 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4983 | else |
4984 | pSMB->InformationLevel = | |
50c2f753 | 4985 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4986 | } |
4987 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4988 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4989 | pSMB->ByteCount = cpu_to_le16(byte_count); |
133672ef | 4990 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 4991 | if (rc) { |
b6b38f70 | 4992 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
4993 | } |
4994 | ||
50c2f753 | 4995 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4996 | since file handle passed in no longer valid */ |
4997 | ||
4998 | return rc; | |
4999 | } | |
5000 | ||
50c2f753 | 5001 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5002 | an open handle, rather than by pathname - this is awkward due to |
5003 | potential access conflicts on the open, but it is unavoidable for these | |
5004 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5005 | time and resort to the original setpathinfo level which takes the ancient | |
5006 | DOS time format with 2 second granularity */ | |
5007 | int | |
2dd2dfa0 JL |
5008 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
5009 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
5010 | { |
5011 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5012 | char *data_offset; |
5013 | int rc = 0; | |
1da177e4 LT |
5014 | __u16 params, param_offset, offset, byte_count, count; |
5015 | ||
b6b38f70 | 5016 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5017 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5018 | ||
1da177e4 LT |
5019 | if (rc) |
5020 | return rc; | |
5021 | ||
2dd2dfa0 JL |
5022 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5023 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5024 | |
1da177e4 LT |
5025 | params = 6; |
5026 | pSMB->MaxSetupCount = 0; | |
5027 | pSMB->Reserved = 0; | |
5028 | pSMB->Flags = 0; | |
5029 | pSMB->Timeout = 0; | |
5030 | pSMB->Reserved2 = 0; | |
5031 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5032 | offset = param_offset + params; | |
5033 | ||
50c2f753 | 5034 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 5035 | |
26f57364 | 5036 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5037 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5038 | /* BB find max SMB PDU from sess */ |
5039 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5040 | pSMB->SetupCount = 1; |
5041 | pSMB->Reserved3 = 0; | |
5042 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5043 | byte_count = 3 /* pad */ + params + count; | |
5044 | pSMB->DataCount = cpu_to_le16(count); | |
5045 | pSMB->ParameterCount = cpu_to_le16(params); | |
5046 | pSMB->TotalDataCount = pSMB->DataCount; | |
5047 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5048 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5049 | pSMB->DataOffset = cpu_to_le16(offset); | |
5050 | pSMB->Fid = fid; | |
5051 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5052 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5053 | else | |
5054 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5055 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5056 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5057 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5058 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 5059 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 5060 | if (rc) |
b6b38f70 | 5061 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5062 | |
50c2f753 | 5063 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5064 | since file handle passed in no longer valid */ |
5065 | ||
5066 | return rc; | |
5067 | } | |
5068 | ||
6d22f098 JL |
5069 | int |
5070 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
5071 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
5072 | { | |
5073 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5074 | char *data_offset; | |
5075 | int rc = 0; | |
5076 | __u16 params, param_offset, offset, byte_count, count; | |
5077 | ||
b6b38f70 | 5078 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5079 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5080 | ||
5081 | if (rc) | |
5082 | return rc; | |
5083 | ||
5084 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5085 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5086 | ||
5087 | params = 6; | |
5088 | pSMB->MaxSetupCount = 0; | |
5089 | pSMB->Reserved = 0; | |
5090 | pSMB->Flags = 0; | |
5091 | pSMB->Timeout = 0; | |
5092 | pSMB->Reserved2 = 0; | |
5093 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5094 | offset = param_offset + params; | |
5095 | ||
5096 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5097 | ||
5098 | count = 1; | |
5099 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5100 | /* BB find max SMB PDU from sess */ | |
5101 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5102 | pSMB->SetupCount = 1; | |
5103 | pSMB->Reserved3 = 0; | |
5104 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5105 | byte_count = 3 /* pad */ + params + count; | |
5106 | pSMB->DataCount = cpu_to_le16(count); | |
5107 | pSMB->ParameterCount = cpu_to_le16(params); | |
5108 | pSMB->TotalDataCount = pSMB->DataCount; | |
5109 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5110 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5111 | pSMB->DataOffset = cpu_to_le16(offset); | |
5112 | pSMB->Fid = fid; | |
5113 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5114 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5115 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5116 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5117 | *data_offset = delete_file ? 1 : 0; | |
5118 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5119 | if (rc) | |
b6b38f70 | 5120 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5121 | |
5122 | return rc; | |
5123 | } | |
1da177e4 LT |
5124 | |
5125 | int | |
6fc000e5 JL |
5126 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
5127 | const char *fileName, const FILE_BASIC_INFO *data, | |
5128 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5129 | { |
5130 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5131 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5132 | int name_len; | |
5133 | int rc = 0; | |
5134 | int bytes_returned = 0; | |
5135 | char *data_offset; | |
5136 | __u16 params, param_offset, offset, byte_count, count; | |
5137 | ||
b6b38f70 | 5138 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5139 | |
5140 | SetTimesRetry: | |
5141 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5142 | (void **) &pSMBr); | |
5143 | if (rc) | |
5144 | return rc; | |
5145 | ||
5146 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5147 | name_len = | |
b1a45695 | 5148 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5149 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5150 | name_len++; /* trailing null */ |
5151 | name_len *= 2; | |
50c2f753 | 5152 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5153 | name_len = strnlen(fileName, PATH_MAX); |
5154 | name_len++; /* trailing null */ | |
5155 | strncpy(pSMB->FileName, fileName, name_len); | |
5156 | } | |
5157 | ||
5158 | params = 6 + name_len; | |
26f57364 | 5159 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5160 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5161 | /* BB find max SMB PDU from sess structure BB */ |
5162 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5163 | pSMB->MaxSetupCount = 0; |
5164 | pSMB->Reserved = 0; | |
5165 | pSMB->Flags = 0; | |
5166 | pSMB->Timeout = 0; | |
5167 | pSMB->Reserved2 = 0; | |
5168 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5169 | InformationLevel) - 4; |
1da177e4 LT |
5170 | offset = param_offset + params; |
5171 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5172 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5173 | pSMB->DataOffset = cpu_to_le16(offset); | |
5174 | pSMB->SetupCount = 1; | |
5175 | pSMB->Reserved3 = 0; | |
5176 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5177 | byte_count = 3 /* pad */ + params + count; | |
5178 | ||
5179 | pSMB->DataCount = cpu_to_le16(count); | |
5180 | pSMB->ParameterCount = cpu_to_le16(params); | |
5181 | pSMB->TotalDataCount = pSMB->DataCount; | |
5182 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5183 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5184 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5185 | else | |
5186 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5187 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5188 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5189 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5190 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5191 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5192 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5193 | if (rc) |
b6b38f70 | 5194 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5195 | |
5196 | cifs_buf_release(pSMB); | |
5197 | ||
5198 | if (rc == -EAGAIN) | |
5199 | goto SetTimesRetry; | |
5200 | ||
5201 | return rc; | |
5202 | } | |
5203 | ||
5204 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5205 | /* Can be used to set attributes */ | |
5206 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5207 | handling it anyway and NT4 was what we thought it would be needed for | |
5208 | Do not delete it until we prove whether needed for Win9x though */ | |
5209 | int | |
5210 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5211 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5212 | { | |
5213 | SETATTR_REQ *pSMB = NULL; | |
5214 | SETATTR_RSP *pSMBr = NULL; | |
5215 | int rc = 0; | |
5216 | int bytes_returned; | |
5217 | int name_len; | |
5218 | ||
b6b38f70 | 5219 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5220 | |
5221 | SetAttrLgcyRetry: | |
5222 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5223 | (void **) &pSMBr); | |
5224 | if (rc) | |
5225 | return rc; | |
5226 | ||
5227 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5228 | name_len = | |
50c2f753 | 5229 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5230 | PATH_MAX, nls_codepage); |
5231 | name_len++; /* trailing null */ | |
5232 | name_len *= 2; | |
50c2f753 | 5233 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5234 | name_len = strnlen(fileName, PATH_MAX); |
5235 | name_len++; /* trailing null */ | |
5236 | strncpy(pSMB->fileName, fileName, name_len); | |
5237 | } | |
5238 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5239 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5240 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5241 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5242 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5243 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5244 | if (rc) |
b6b38f70 | 5245 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5246 | |
5247 | cifs_buf_release(pSMB); | |
5248 | ||
5249 | if (rc == -EAGAIN) | |
5250 | goto SetAttrLgcyRetry; | |
5251 | ||
5252 | return rc; | |
5253 | } | |
5254 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5255 | ||
654cf14a JL |
5256 | static void |
5257 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5258 | const struct cifs_unix_set_info_args *args) | |
5259 | { | |
5260 | u64 mode = args->mode; | |
5261 | ||
5262 | /* | |
5263 | * Samba server ignores set of file size to zero due to bugs in some | |
5264 | * older clients, but we should be precise - we use SetFileSize to | |
5265 | * set file size and do not want to truncate file size to zero | |
25985edc | 5266 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5267 | * zero instead of -1 here |
5268 | */ | |
5269 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5270 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5271 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5272 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5273 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5274 | data_offset->Uid = cpu_to_le64(args->uid); | |
5275 | data_offset->Gid = cpu_to_le64(args->gid); | |
5276 | /* better to leave device as zero when it is */ | |
5277 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5278 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5279 | data_offset->Permissions = cpu_to_le64(mode); | |
5280 | ||
5281 | if (S_ISREG(mode)) | |
5282 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5283 | else if (S_ISDIR(mode)) | |
5284 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5285 | else if (S_ISLNK(mode)) | |
5286 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5287 | else if (S_ISCHR(mode)) | |
5288 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5289 | else if (S_ISBLK(mode)) | |
5290 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5291 | else if (S_ISFIFO(mode)) | |
5292 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5293 | else if (S_ISSOCK(mode)) | |
5294 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5295 | } | |
5296 | ||
3bbeeb3c JL |
5297 | int |
5298 | CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon, | |
5299 | const struct cifs_unix_set_info_args *args, | |
5300 | u16 fid, u32 pid_of_opener) | |
5301 | { | |
5302 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5303 | FILE_UNIX_BASIC_INFO *data_offset; | |
5304 | int rc = 0; | |
5305 | u16 params, param_offset, offset, byte_count, count; | |
5306 | ||
b6b38f70 | 5307 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5308 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5309 | ||
5310 | if (rc) | |
5311 | return rc; | |
5312 | ||
5313 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5314 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5315 | ||
5316 | params = 6; | |
5317 | pSMB->MaxSetupCount = 0; | |
5318 | pSMB->Reserved = 0; | |
5319 | pSMB->Flags = 0; | |
5320 | pSMB->Timeout = 0; | |
5321 | pSMB->Reserved2 = 0; | |
5322 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5323 | offset = param_offset + params; | |
5324 | ||
5325 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5326 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5327 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5328 | ||
5329 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5330 | /* BB find max SMB PDU from sess */ | |
5331 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5332 | pSMB->SetupCount = 1; | |
5333 | pSMB->Reserved3 = 0; | |
5334 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5335 | byte_count = 3 /* pad */ + params + count; | |
5336 | pSMB->DataCount = cpu_to_le16(count); | |
5337 | pSMB->ParameterCount = cpu_to_le16(params); | |
5338 | pSMB->TotalDataCount = pSMB->DataCount; | |
5339 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5340 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5341 | pSMB->DataOffset = cpu_to_le16(offset); | |
5342 | pSMB->Fid = fid; | |
5343 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5344 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5345 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5346 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5347 | ||
5348 | cifs_fill_unix_set_info(data_offset, args); | |
5349 | ||
5350 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5351 | if (rc) | |
b6b38f70 | 5352 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5353 | |
5354 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5355 | since file handle passed in no longer valid */ | |
5356 | ||
5357 | return rc; | |
5358 | } | |
5359 | ||
1da177e4 | 5360 | int |
01ea95e3 JL |
5361 | CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
5362 | const struct cifs_unix_set_info_args *args, | |
5363 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5364 | { |
5365 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5366 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5367 | int name_len; | |
5368 | int rc = 0; | |
5369 | int bytes_returned = 0; | |
5370 | FILE_UNIX_BASIC_INFO *data_offset; | |
5371 | __u16 params, param_offset, offset, count, byte_count; | |
5372 | ||
b6b38f70 | 5373 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5374 | setPermsRetry: |
5375 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5376 | (void **) &pSMBr); | |
5377 | if (rc) | |
5378 | return rc; | |
5379 | ||
5380 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5381 | name_len = | |
50c2f753 | 5382 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5383 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5384 | name_len++; /* trailing null */ |
5385 | name_len *= 2; | |
3e87d803 | 5386 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5387 | name_len = strnlen(fileName, PATH_MAX); |
5388 | name_len++; /* trailing null */ | |
5389 | strncpy(pSMB->FileName, fileName, name_len); | |
5390 | } | |
5391 | ||
5392 | params = 6 + name_len; | |
26f57364 | 5393 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5394 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5395 | /* BB find max SMB PDU from sess structure BB */ |
5396 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5397 | pSMB->MaxSetupCount = 0; |
5398 | pSMB->Reserved = 0; | |
5399 | pSMB->Flags = 0; | |
5400 | pSMB->Timeout = 0; | |
5401 | pSMB->Reserved2 = 0; | |
5402 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5403 | InformationLevel) - 4; |
1da177e4 LT |
5404 | offset = param_offset + params; |
5405 | data_offset = | |
5406 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5407 | offset); | |
5408 | memset(data_offset, 0, count); | |
5409 | pSMB->DataOffset = cpu_to_le16(offset); | |
5410 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5411 | pSMB->SetupCount = 1; | |
5412 | pSMB->Reserved3 = 0; | |
5413 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5414 | byte_count = 3 /* pad */ + params + count; | |
5415 | pSMB->ParameterCount = cpu_to_le16(params); | |
5416 | pSMB->DataCount = cpu_to_le16(count); | |
5417 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5418 | pSMB->TotalDataCount = pSMB->DataCount; | |
5419 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5420 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5421 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5422 | |
654cf14a | 5423 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5424 | |
5425 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5426 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5427 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5428 | if (rc) |
b6b38f70 | 5429 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5430 | |
0d817bc0 | 5431 | cifs_buf_release(pSMB); |
1da177e4 LT |
5432 | if (rc == -EAGAIN) |
5433 | goto setPermsRetry; | |
5434 | return rc; | |
5435 | } | |
5436 | ||
1da177e4 | 5437 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5438 | /* |
5439 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5440 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5441 | * it looks for that attribute name and stuffs that value into the EAData | |
5442 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5443 | * buffer. In both cases, the return value is either the length of the | |
5444 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5445 | * the data isn't copied to it, but the length is returned. | |
5446 | */ | |
1da177e4 LT |
5447 | ssize_t |
5448 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
31c0519f JL |
5449 | const unsigned char *searchName, const unsigned char *ea_name, |
5450 | char *EAData, size_t buf_size, | |
5451 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5452 | { |
5453 | /* BB assumes one setup word */ | |
5454 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5455 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5456 | int rc = 0; | |
5457 | int bytes_returned; | |
6e462b9f | 5458 | int list_len; |
f0d3868b | 5459 | struct fealist *ea_response_data; |
50c2f753 SF |
5460 | struct fea *temp_fea; |
5461 | char *temp_ptr; | |
0cd126b5 | 5462 | char *end_of_smb; |
f0d3868b | 5463 | __u16 params, byte_count, data_offset; |
1da177e4 | 5464 | |
b6b38f70 | 5465 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5466 | QAllEAsRetry: |
5467 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5468 | (void **) &pSMBr); | |
5469 | if (rc) | |
5470 | return rc; | |
5471 | ||
5472 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5473 | list_len = |
50c2f753 | 5474 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5475 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5476 | list_len++; /* trailing null */ |
5477 | list_len *= 2; | |
1da177e4 | 5478 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5479 | list_len = strnlen(searchName, PATH_MAX); |
5480 | list_len++; /* trailing null */ | |
5481 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5482 | } |
5483 | ||
6e462b9f | 5484 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5485 | pSMB->TotalDataCount = 0; |
5486 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5487 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5488 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5489 | pSMB->MaxSetupCount = 0; |
5490 | pSMB->Reserved = 0; | |
5491 | pSMB->Flags = 0; | |
5492 | pSMB->Timeout = 0; | |
5493 | pSMB->Reserved2 = 0; | |
5494 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5495 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5496 | pSMB->DataCount = 0; |
5497 | pSMB->DataOffset = 0; | |
5498 | pSMB->SetupCount = 1; | |
5499 | pSMB->Reserved3 = 0; | |
5500 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5501 | byte_count = params + 1 /* pad */ ; | |
5502 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5503 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5504 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5505 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5506 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5507 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5508 | ||
5509 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5510 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5511 | if (rc) { | |
b6b38f70 | 5512 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5513 | goto QAllEAsOut; |
5514 | } | |
1da177e4 | 5515 | |
f0d3868b JL |
5516 | |
5517 | /* BB also check enough total bytes returned */ | |
5518 | /* BB we need to improve the validity checking | |
5519 | of these trans2 responses */ | |
5520 | ||
5521 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5522 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5523 | rc = -EIO; /* bad smb */ |
5524 | goto QAllEAsOut; | |
5525 | } | |
5526 | ||
5527 | /* check that length of list is not more than bcc */ | |
5528 | /* check that each entry does not go beyond length | |
5529 | of list */ | |
5530 | /* check that each element of each entry does not | |
5531 | go beyond end of list */ | |
5532 | /* validate_trans2_offsets() */ | |
5533 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5534 | ||
5535 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5536 | ea_response_data = (struct fealist *) | |
5537 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5538 | ||
6e462b9f | 5539 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5540 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5541 | if (list_len <= 8) { |
b6b38f70 | 5542 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5543 | goto QAllEAsOut; |
5544 | } | |
5545 | ||
0cd126b5 | 5546 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5547 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5548 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 5549 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5550 | rc = -EIO; |
5551 | goto QAllEAsOut; | |
5552 | } | |
5553 | ||
f0d3868b | 5554 | /* account for ea list len */ |
6e462b9f | 5555 | list_len -= 4; |
f0d3868b JL |
5556 | temp_fea = ea_response_data->list; |
5557 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5558 | while (list_len > 0) { |
122ca007 | 5559 | unsigned int name_len; |
f0d3868b | 5560 | __u16 value_len; |
0cd126b5 | 5561 | |
6e462b9f | 5562 | list_len -= 4; |
f0d3868b | 5563 | temp_ptr += 4; |
0cd126b5 JL |
5564 | /* make sure we can read name_len and 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 | ||
5571 | name_len = temp_fea->name_len; | |
5572 | value_len = le16_to_cpu(temp_fea->value_len); | |
5573 | list_len -= name_len + 1 + value_len; | |
5574 | if (list_len < 0) { | |
b6b38f70 | 5575 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5576 | rc = -EIO; |
5577 | goto QAllEAsOut; | |
5578 | } | |
5579 | ||
31c0519f JL |
5580 | if (ea_name) { |
5581 | if (strncmp(ea_name, temp_ptr, name_len) == 0) { | |
5582 | temp_ptr += name_len + 1; | |
5583 | rc = value_len; | |
5584 | if (buf_size == 0) | |
5585 | goto QAllEAsOut; | |
5586 | if ((size_t)value_len > buf_size) { | |
5587 | rc = -ERANGE; | |
5588 | goto QAllEAsOut; | |
5589 | } | |
5590 | memcpy(EAData, temp_ptr, value_len); | |
5591 | goto QAllEAsOut; | |
5592 | } | |
f0d3868b | 5593 | } else { |
31c0519f JL |
5594 | /* account for prefix user. and trailing null */ |
5595 | rc += (5 + 1 + name_len); | |
5596 | if (rc < (int) buf_size) { | |
5597 | memcpy(EAData, "user.", 5); | |
5598 | EAData += 5; | |
5599 | memcpy(EAData, temp_ptr, name_len); | |
5600 | EAData += name_len; | |
5601 | /* null terminate name */ | |
5602 | *EAData = 0; | |
5603 | ++EAData; | |
5604 | } else if (buf_size == 0) { | |
5605 | /* skip copy - calc size only */ | |
5606 | } else { | |
5607 | /* stop before overrun buffer */ | |
5608 | rc = -ERANGE; | |
5609 | break; | |
5610 | } | |
1da177e4 | 5611 | } |
0cd126b5 | 5612 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5613 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5614 | } |
f0d3868b | 5615 | |
31c0519f JL |
5616 | /* didn't find the named attribute */ |
5617 | if (ea_name) | |
5618 | rc = -ENODATA; | |
5619 | ||
f0d3868b | 5620 | QAllEAsOut: |
0d817bc0 | 5621 | cifs_buf_release(pSMB); |
1da177e4 LT |
5622 | if (rc == -EAGAIN) |
5623 | goto QAllEAsRetry; | |
5624 | ||
5625 | return (ssize_t)rc; | |
5626 | } | |
5627 | ||
1da177e4 LT |
5628 | int |
5629 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5630 | const char *ea_name, const void *ea_value, |
5631 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5632 | int remap) | |
1da177e4 LT |
5633 | { |
5634 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5635 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5636 | struct fealist *parm_data; | |
5637 | int name_len; | |
5638 | int rc = 0; | |
5639 | int bytes_returned = 0; | |
5640 | __u16 params, param_offset, byte_count, offset, count; | |
5641 | ||
b6b38f70 | 5642 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5643 | SetEARetry: |
5644 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5645 | (void **) &pSMBr); | |
5646 | if (rc) | |
5647 | return rc; | |
5648 | ||
5649 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5650 | name_len = | |
50c2f753 | 5651 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5652 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5653 | name_len++; /* trailing null */ |
5654 | name_len *= 2; | |
50c2f753 | 5655 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5656 | name_len = strnlen(fileName, PATH_MAX); |
5657 | name_len++; /* trailing null */ | |
5658 | strncpy(pSMB->FileName, fileName, name_len); | |
5659 | } | |
5660 | ||
5661 | params = 6 + name_len; | |
5662 | ||
5663 | /* done calculating parms using name_len of file name, | |
5664 | now use name_len to calculate length of ea name | |
5665 | we are going to create in the inode xattrs */ | |
790fe579 | 5666 | if (ea_name == NULL) |
1da177e4 LT |
5667 | name_len = 0; |
5668 | else | |
50c2f753 | 5669 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5670 | |
dae5dbdb | 5671 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5672 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5673 | /* BB find max SMB PDU from sess */ |
5674 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5675 | pSMB->MaxSetupCount = 0; |
5676 | pSMB->Reserved = 0; | |
5677 | pSMB->Flags = 0; | |
5678 | pSMB->Timeout = 0; | |
5679 | pSMB->Reserved2 = 0; | |
5680 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5681 | InformationLevel) - 4; |
1da177e4 LT |
5682 | offset = param_offset + params; |
5683 | pSMB->InformationLevel = | |
5684 | cpu_to_le16(SMB_SET_FILE_EA); | |
5685 | ||
5686 | parm_data = | |
5687 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5688 | offset); | |
5689 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5690 | pSMB->DataOffset = cpu_to_le16(offset); | |
5691 | pSMB->SetupCount = 1; | |
5692 | pSMB->Reserved3 = 0; | |
5693 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5694 | byte_count = 3 /* pad */ + params + count; | |
5695 | pSMB->DataCount = cpu_to_le16(count); | |
5696 | parm_data->list_len = cpu_to_le32(count); | |
5697 | parm_data->list[0].EA_flags = 0; | |
5698 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5699 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5700 | /* EA names are always ASCII */ |
790fe579 | 5701 | if (ea_name) |
50c2f753 | 5702 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5703 | parm_data->list[0].name[name_len] = 0; |
5704 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5705 | /* caller ensures that ea_value_len is less than 64K but | |
5706 | we need to ensure that it fits within the smb */ | |
5707 | ||
50c2f753 SF |
5708 | /*BB add length check to see if it would fit in |
5709 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5710 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5711 | if (ea_value_len) | |
50c2f753 SF |
5712 | memcpy(parm_data->list[0].name+name_len+1, |
5713 | ea_value, ea_value_len); | |
1da177e4 LT |
5714 | |
5715 | pSMB->TotalDataCount = pSMB->DataCount; | |
5716 | pSMB->ParameterCount = cpu_to_le16(params); | |
5717 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5718 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5719 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5720 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5721 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5722 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5723 | if (rc) |
b6b38f70 | 5724 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5725 | |
5726 | cifs_buf_release(pSMB); | |
5727 | ||
5728 | if (rc == -EAGAIN) | |
5729 | goto SetEARetry; | |
5730 | ||
5731 | return rc; | |
5732 | } | |
1da177e4 | 5733 | #endif |
0eff0e26 SF |
5734 | |
5735 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
5736 | /* | |
5737 | * Years ago the kernel added a "dnotify" function for Samba server, | |
5738 | * to allow network clients (such as Windows) to display updated | |
5739 | * lists of files in directory listings automatically when | |
5740 | * files are added by one user when another user has the | |
5741 | * same directory open on their desktop. The Linux cifs kernel | |
5742 | * client hooked into the kernel side of this interface for | |
5743 | * the same reason, but ironically when the VFS moved from | |
5744 | * "dnotify" to "inotify" it became harder to plug in Linux | |
5745 | * network file system clients (the most obvious use case | |
5746 | * for notify interfaces is when multiple users can update | |
5747 | * the contents of the same directory - exactly what network | |
5748 | * file systems can do) although the server (Samba) could | |
5749 | * still use it. For the short term we leave the worker | |
5750 | * function ifdeffed out (below) until inotify is fixed | |
5751 | * in the VFS to make it easier to plug in network file | |
5752 | * system clients. If inotify turns out to be permanently | |
5753 | * incompatible for network fs clients, we could instead simply | |
5754 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
5755 | */ | |
5756 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, | |
5757 | const int notify_subdirs, const __u16 netfid, | |
5758 | __u32 filter, struct file *pfile, int multishot, | |
5759 | const struct nls_table *nls_codepage) | |
5760 | { | |
5761 | int rc = 0; | |
5762 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
5763 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
5764 | struct dir_notify_req *dnotify_req; | |
5765 | int bytes_returned; | |
5766 | ||
5767 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
5768 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
5769 | (void **) &pSMBr); | |
5770 | if (rc) | |
5771 | return rc; | |
5772 | ||
5773 | pSMB->TotalParameterCount = 0 ; | |
5774 | pSMB->TotalDataCount = 0; | |
5775 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5776 | /* BB find exact data count max from sess structure BB */ | |
5777 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
5778 | /* BB VERIFY verify which is correct for above BB */ | |
5779 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5780 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5781 | ||
5782 | pSMB->MaxSetupCount = 4; | |
5783 | pSMB->Reserved = 0; | |
5784 | pSMB->ParameterOffset = 0; | |
5785 | pSMB->DataCount = 0; | |
5786 | pSMB->DataOffset = 0; | |
5787 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5788 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5789 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5790 | if (notify_subdirs) | |
5791 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
5792 | pSMB->Reserved2 = 0; | |
5793 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5794 | pSMB->Fid = netfid; /* file handle always le */ | |
5795 | pSMB->ByteCount = 0; | |
5796 | ||
5797 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5798 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
5799 | CIFS_ASYNC_OP); | |
5800 | if (rc) { | |
5801 | cFYI(1, "Error in Notify = %d", rc); | |
5802 | } else { | |
5803 | /* Add file to outstanding requests */ | |
5804 | /* BB change to kmem cache alloc */ | |
5805 | dnotify_req = kmalloc( | |
5806 | sizeof(struct dir_notify_req), | |
5807 | GFP_KERNEL); | |
5808 | if (dnotify_req) { | |
5809 | dnotify_req->Pid = pSMB->hdr.Pid; | |
5810 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5811 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5812 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5813 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5814 | dnotify_req->netfid = netfid; | |
5815 | dnotify_req->pfile = pfile; | |
5816 | dnotify_req->filter = filter; | |
5817 | dnotify_req->multishot = multishot; | |
5818 | spin_lock(&GlobalMid_Lock); | |
5819 | list_add_tail(&dnotify_req->lhead, | |
5820 | &GlobalDnotifyReqList); | |
5821 | spin_unlock(&GlobalMid_Lock); | |
5822 | } else | |
5823 | rc = -ENOMEM; | |
5824 | } | |
5825 | cifs_buf_release(pSMB); | |
5826 | return rc; | |
5827 | } | |
5828 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |