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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 */ | |
94 | write_lock(&GlobalSMBSeslock); | |
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 LT |
99 | } |
100 | write_unlock(&GlobalSMBSeslock); | |
09d1db5c SF |
101 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
102 | to this tcon */ | |
1da177e4 LT |
103 | } |
104 | ||
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 | ||
139 | if (ses->status == CifsExiting) | |
140 | return -EIO; | |
141 | ||
142 | /* | |
143 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
144 | * greater than cifs socket timeout which is 7 seconds | |
145 | */ | |
146 | while (server->tcpStatus == CifsNeedReconnect) { | |
147 | wait_event_interruptible_timeout(server->response_q, | |
148 | (server->tcpStatus == CifsGood), 10 * HZ); | |
149 | ||
150 | /* is TCP session is reestablished now ?*/ | |
151 | if (server->tcpStatus != CifsNeedReconnect) | |
152 | break; | |
153 | ||
154 | /* | |
155 | * on "soft" mounts we wait once. Hard mounts keep | |
156 | * retrying until process is killed or server comes | |
157 | * back on-line | |
158 | */ | |
159 | if (!tcon->retry || ses->status == CifsExiting) { | |
b6b38f70 | 160 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
161 | return -EHOSTDOWN; |
162 | } | |
163 | } | |
164 | ||
165 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
166 | return 0; | |
167 | ||
168 | nls_codepage = load_nls_default(); | |
169 | ||
170 | /* | |
171 | * need to prevent multiple threads trying to simultaneously | |
172 | * reconnect the same SMB session | |
173 | */ | |
d7b619cf | 174 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
175 | rc = cifs_negotiate_protocol(0, ses); |
176 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
177 | rc = cifs_setup_session(0, ses, nls_codepage); |
178 | ||
179 | /* do we need to reconnect tcon? */ | |
180 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 181 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
182 | goto out; |
183 | } | |
184 | ||
185 | mark_open_files_invalid(tcon); | |
186 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 187 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 188 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
189 | |
190 | if (rc) | |
191 | goto out; | |
192 | ||
193 | /* | |
194 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
195 | * size shrinking | |
196 | */ | |
197 | atomic_inc(&tconInfoReconnectCount); | |
198 | ||
199 | /* tell server Unix caps we support */ | |
200 | if (ses->capabilities & CAP_UNIX) | |
201 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
202 | ||
203 | /* | |
204 | * Removed call to reopen open files here. It is safer (and faster) to | |
205 | * reopen files one at a time as needed in read and write. | |
206 | * | |
207 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
208 | */ | |
209 | ||
210 | out: | |
211 | /* | |
212 | * Check if handle based operation so we know whether we can continue | |
213 | * or not without returning to caller to reset file handle | |
214 | */ | |
215 | switch (smb_command) { | |
216 | case SMB_COM_READ_ANDX: | |
217 | case SMB_COM_WRITE_ANDX: | |
218 | case SMB_COM_CLOSE: | |
219 | case SMB_COM_FIND_CLOSE2: | |
220 | case SMB_COM_LOCKING_ANDX: | |
221 | rc = -EAGAIN; | |
222 | } | |
223 | ||
224 | unload_nls(nls_codepage); | |
225 | return rc; | |
226 | } | |
227 | ||
ad7a2926 SF |
228 | /* Allocate and return pointer to an SMB request buffer, and set basic |
229 | SMB information in the SMB header. If the return code is zero, this | |
230 | function must have filled in request_buf pointer */ | |
1da177e4 LT |
231 | static int |
232 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
ad7a2926 | 233 | void **request_buf) |
1da177e4 LT |
234 | { |
235 | int rc = 0; | |
236 | ||
9162ab20 | 237 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 238 | if (rc) |
1da177e4 LT |
239 | return rc; |
240 | ||
241 | *request_buf = cifs_small_buf_get(); | |
242 | if (*request_buf == NULL) { | |
243 | /* BB should we add a retry in here if not a writepage? */ | |
244 | return -ENOMEM; | |
245 | } | |
246 | ||
63135e08 | 247 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 248 | tcon, wct); |
1da177e4 | 249 | |
790fe579 SF |
250 | if (tcon != NULL) |
251 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 252 | |
1da177e4 | 253 | return rc; |
5815449d SF |
254 | } |
255 | ||
12b3b8ff | 256 | int |
50c2f753 | 257 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 258 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
259 | { |
260 | int rc; | |
50c2f753 | 261 | struct smb_hdr *buffer; |
12b3b8ff | 262 | |
5815449d | 263 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 264 | if (rc) |
12b3b8ff SF |
265 | return rc; |
266 | ||
04fdabe1 | 267 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
268 | buffer->Mid = GetNextMid(ses->server); |
269 | if (ses->capabilities & CAP_UNICODE) | |
270 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 271 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
272 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
273 | ||
274 | /* uid, tid can stay at zero as set in header assemble */ | |
275 | ||
50c2f753 | 276 | /* BB add support for turning on the signing when |
12b3b8ff SF |
277 | this function is used after 1st of session setup requests */ |
278 | ||
279 | return rc; | |
280 | } | |
1da177e4 LT |
281 | |
282 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
283 | static int | |
284 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
285 | void **request_buf /* returned */ , | |
286 | void **response_buf /* returned */ ) | |
287 | { | |
288 | int rc = 0; | |
289 | ||
9162ab20 | 290 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 291 | if (rc) |
1da177e4 LT |
292 | return rc; |
293 | ||
294 | *request_buf = cifs_buf_get(); | |
295 | if (*request_buf == NULL) { | |
296 | /* BB should we add a retry in here if not a writepage? */ | |
297 | return -ENOMEM; | |
298 | } | |
299 | /* Although the original thought was we needed the response buf for */ | |
300 | /* potential retries of smb operations it turns out we can determine */ | |
301 | /* from the mid flags when the request buffer can be resent without */ | |
302 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 303 | if (response_buf) |
50c2f753 | 304 | *response_buf = *request_buf; |
1da177e4 LT |
305 | |
306 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 307 | wct); |
1da177e4 | 308 | |
790fe579 SF |
309 | if (tcon != NULL) |
310 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 311 | |
1da177e4 LT |
312 | return rc; |
313 | } | |
314 | ||
50c2f753 | 315 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 LT |
316 | { |
317 | int rc = -EINVAL; | |
318 | int total_size; | |
50c2f753 | 319 | char *pBCC; |
1da177e4 LT |
320 | |
321 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
322 | /* check for parm and data offset going beyond end of smb */ | |
790fe579 SF |
323 | if (pSMB->hdr.WordCount >= 10) { |
324 | if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
1da177e4 LT |
325 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { |
326 | /* check that bcc is at least as big as parms + data */ | |
327 | /* check that bcc is less than negotiated smb buffer */ | |
328 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
790fe579 | 329 | if (total_size < 512) { |
c18c842b | 330 | total_size += |
63135e08 | 331 | le16_to_cpu(pSMB->t2_rsp.DataCount); |
1da177e4 | 332 | /* BCC le converted in SendReceive */ |
50c2f753 | 333 | pBCC = (pSMB->hdr.WordCount * 2) + |
09d1db5c | 334 | sizeof(struct smb_hdr) + |
1da177e4 | 335 | (char *)pSMB; |
790fe579 | 336 | if ((total_size <= (*(u16 *)pBCC)) && |
50c2f753 | 337 | (total_size < |
1da177e4 LT |
338 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { |
339 | return 0; | |
340 | } | |
1da177e4 LT |
341 | } |
342 | } | |
343 | } | |
50c2f753 | 344 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 LT |
345 | sizeof(struct smb_t2_rsp) + 16); |
346 | return rc; | |
347 | } | |
348 | int | |
349 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
350 | { | |
351 | NEGOTIATE_REQ *pSMB; | |
352 | NEGOTIATE_RSP *pSMBr; | |
353 | int rc = 0; | |
354 | int bytes_returned; | |
3979877e | 355 | int i; |
50c2f753 | 356 | struct TCP_Server_Info *server; |
1da177e4 | 357 | u16 count; |
750d1151 | 358 | unsigned int secFlags; |
1da177e4 | 359 | |
790fe579 | 360 | if (ses->server) |
1da177e4 LT |
361 | server = ses->server; |
362 | else { | |
363 | rc = -EIO; | |
364 | return rc; | |
365 | } | |
366 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
367 | (void **) &pSMB, (void **) &pSMBr); | |
368 | if (rc) | |
369 | return rc; | |
750d1151 SF |
370 | |
371 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 372 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 373 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 374 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 375 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 376 | |
b6b38f70 | 377 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 378 | |
1982c344 | 379 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 380 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 381 | |
100c1ddc | 382 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 383 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 384 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 385 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d SF |
386 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
387 | } | |
ac683924 SF |
388 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
389 | else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) | |
390 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
391 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 392 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
393 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
394 | } | |
395 | #endif | |
50c2f753 | 396 | |
3979877e | 397 | count = 0; |
50c2f753 | 398 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
399 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
400 | count += strlen(protocols[i].name) + 1; | |
401 | /* null at end of source and target buffers anyway */ | |
402 | } | |
1da177e4 LT |
403 | pSMB->hdr.smb_buf_length += count; |
404 | pSMB->ByteCount = cpu_to_le16(count); | |
405 | ||
406 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
407 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 408 | if (rc != 0) |
254e55ed SF |
409 | goto neg_err_exit; |
410 | ||
9bf67e51 JL |
411 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
412 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 413 | /* Check wct = 1 error case */ |
9bf67e51 | 414 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 415 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 416 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
417 | could not negotiate a common dialect */ |
418 | rc = -EOPNOTSUPP; | |
419 | goto neg_err_exit; | |
50c2f753 | 420 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 421 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
422 | && ((server->dialect == LANMAN_PROT) |
423 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 424 | __s16 tmp; |
50c2f753 | 425 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 426 | |
790fe579 | 427 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 428 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
429 | server->secType = LANMAN; |
430 | else { | |
b6b38f70 JP |
431 | cERROR(1, "mount failed weak security disabled" |
432 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
433 | rc = -EOPNOTSUPP; |
434 | goto neg_err_exit; | |
50c2f753 | 435 | } |
254e55ed SF |
436 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
437 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
438 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 439 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 440 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
441 | GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey); |
442 | /* even though we do not use raw we might as well set this | |
443 | accurately, in case we ever find a need for it */ | |
790fe579 | 444 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 445 | server->max_rw = 0xFF00; |
254e55ed SF |
446 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
447 | } else { | |
eca6acf9 | 448 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
449 | server->capabilities = CAP_MPX_MODE; |
450 | } | |
b815f1e5 | 451 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 452 | if (tmp == -1) { |
25ee4a98 SF |
453 | /* OS/2 often does not set timezone therefore |
454 | * we must use server time to calc time zone. | |
b815f1e5 SF |
455 | * Could deviate slightly from the right zone. |
456 | * Smallest defined timezone difference is 15 minutes | |
457 | * (i.e. Nepal). Rounding up/down is done to match | |
458 | * this requirement. | |
25ee4a98 | 459 | */ |
b815f1e5 | 460 | int val, seconds, remain, result; |
25ee4a98 SF |
461 | struct timespec ts, utc; |
462 | utc = CURRENT_TIME; | |
c4a2c08d JL |
463 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
464 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 465 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 466 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 467 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 468 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 469 | seconds = abs(val); |
947a5067 | 470 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 471 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 472 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 473 | result += MIN_TZ_ADJ; |
790fe579 | 474 | if (val < 0) |
ad7a2926 | 475 | result = -result; |
b815f1e5 | 476 | server->timeAdj = result; |
25ee4a98 | 477 | } else { |
b815f1e5 SF |
478 | server->timeAdj = (int)tmp; |
479 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 480 | } |
b6b38f70 | 481 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 482 | |
3979877e | 483 | |
254e55ed | 484 | /* BB get server time for time conversions and add |
50c2f753 | 485 | code to use it and timezone since this is not UTC */ |
3979877e | 486 | |
50c2f753 | 487 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 488 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
254e55ed SF |
489 | memcpy(server->cryptKey, rsp->EncryptionKey, |
490 | CIFS_CRYPTO_KEY_SIZE); | |
491 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
492 | rc = -EIO; /* need cryptkey unless plain text */ | |
493 | goto neg_err_exit; | |
494 | } | |
3979877e | 495 | |
f19159dc | 496 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
497 | /* we will not end up setting signing flags - as no signing |
498 | was in LANMAN and server did not return the flags on */ | |
499 | goto signing_check; | |
7c7b25bc | 500 | #else /* weak security disabled */ |
790fe579 | 501 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
502 | cERROR(1, "mount failed, cifs module not built " |
503 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 504 | rc = -EOPNOTSUPP; |
7c7b25bc | 505 | #endif /* WEAK_PW_HASH */ |
254e55ed | 506 | goto neg_err_exit; |
790fe579 | 507 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
508 | /* unknown wct */ |
509 | rc = -EOPNOTSUPP; | |
510 | goto neg_err_exit; | |
511 | } | |
512 | /* else wct == 17 NTLM */ | |
513 | server->secMode = pSMBr->SecurityMode; | |
790fe579 | 514 | if ((server->secMode & SECMODE_USER) == 0) |
b6b38f70 | 515 | cFYI(1, "share mode security"); |
bdc4bf6e | 516 | |
790fe579 | 517 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 518 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 519 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 520 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
521 | cERROR(1, "Server requests plain text password" |
522 | " but client support disabled"); | |
9312f675 | 523 | |
790fe579 | 524 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 525 | server->secType = NTLMv2; |
790fe579 | 526 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 527 | server->secType = NTLM; |
790fe579 | 528 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 529 | server->secType = NTLMv2; |
a013689d SF |
530 | else if (secFlags & CIFSSEC_MAY_KRB5) |
531 | server->secType = Kerberos; | |
ac683924 | 532 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 533 | server->secType = RawNTLMSSP; |
a013689d SF |
534 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
535 | server->secType = LANMAN; | |
536 | /* #ifdef CONFIG_CIFS_EXPERIMENTAL | |
537 | else if (secFlags & CIFSSEC_MAY_PLNTXT) | |
538 | server->secType = ?? | |
539 | #endif */ | |
540 | else { | |
541 | rc = -EOPNOTSUPP; | |
b6b38f70 | 542 | cERROR(1, "Invalid security type"); |
a013689d SF |
543 | goto neg_err_exit; |
544 | } | |
545 | /* else ... any others ...? */ | |
254e55ed SF |
546 | |
547 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
548 | little endian */ | |
549 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
550 | /* probably no need to store and check maxvcs */ | |
551 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 552 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 553 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 554 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed SF |
555 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); |
556 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
b815f1e5 SF |
557 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
558 | server->timeAdj *= 60; | |
254e55ed SF |
559 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
560 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
561 | CIFS_CRYPTO_KEY_SIZE); | |
562 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
563 | && (pSMBr->EncryptionKeyLength == 0)) { | |
564 | /* decode security blob */ | |
565 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
566 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
567 | goto neg_err_exit; | |
568 | } | |
1da177e4 | 569 | |
254e55ed SF |
570 | /* BB might be helpful to save off the domain of server here */ |
571 | ||
50c2f753 | 572 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed SF |
573 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
574 | count = pSMBr->ByteCount; | |
e187e44e | 575 | if (count < 16) { |
254e55ed | 576 | rc = -EIO; |
e187e44e JL |
577 | goto neg_err_exit; |
578 | } | |
e7ddee90 JL |
579 | read_lock(&cifs_tcp_ses_lock); |
580 | if (server->srv_count > 1) { | |
581 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
582 | if (memcmp(server->server_GUID, |
583 | pSMBr->u.extended_response. | |
584 | GUID, 16) != 0) { | |
b6b38f70 | 585 | cFYI(1, "server UID changed"); |
254e55ed | 586 | memcpy(server->server_GUID, |
e187e44e JL |
587 | pSMBr->u.extended_response.GUID, |
588 | 16); | |
589 | } | |
e7ddee90 JL |
590 | } else { |
591 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
592 | memcpy(server->server_GUID, |
593 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 594 | } |
e187e44e JL |
595 | |
596 | if (count == 16) { | |
597 | server->secType = RawNTLMSSP; | |
254e55ed SF |
598 | } else { |
599 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
600 | SecurityBlob, count - 16, |
601 | server); | |
ef571cad | 602 | if (rc == 1) |
e545937a | 603 | rc = 0; |
ef571cad | 604 | else |
254e55ed | 605 | rc = -EINVAL; |
26efa0ba | 606 | |
9fbc5908 SF |
607 | if (server->secType == Kerberos) { |
608 | if (!server->sec_kerberos && | |
609 | !server->sec_mskerberos) | |
610 | rc = -EOPNOTSUPP; | |
611 | } else if (server->secType == RawNTLMSSP) { | |
612 | if (!server->sec_ntlmssp) | |
613 | rc = -EOPNOTSUPP; | |
614 | } else | |
26efa0ba | 615 | rc = -EOPNOTSUPP; |
1da177e4 | 616 | } |
254e55ed SF |
617 | } else |
618 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
619 | ||
6344a423 | 620 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 621 | signing_check: |
6344a423 | 622 | #endif |
762e5ab7 SF |
623 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
624 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
625 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 626 | cFYI(1, "Signing disabled"); |
abb63d6c | 627 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 628 | cERROR(1, "Server requires " |
7111d214 | 629 | "packet signing to be enabled in " |
b6b38f70 | 630 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
631 | rc = -EOPNOTSUPP; |
632 | } | |
50c2f753 | 633 | server->secMode &= |
254e55ed | 634 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
635 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
636 | /* signing required */ | |
b6b38f70 | 637 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
762e5ab7 SF |
638 | if ((server->secMode & |
639 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
b6b38f70 | 640 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 641 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
642 | } else |
643 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
644 | } else { | |
645 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 646 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 647 | server->secMode &= |
254e55ed | 648 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 649 | } |
50c2f753 SF |
650 | |
651 | neg_err_exit: | |
4a6d87f1 | 652 | cifs_buf_release(pSMB); |
254e55ed | 653 | |
b6b38f70 | 654 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
655 | return rc; |
656 | } | |
657 | ||
658 | int | |
659 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
660 | { | |
661 | struct smb_hdr *smb_buffer; | |
1da177e4 | 662 | int rc = 0; |
1da177e4 | 663 | |
b6b38f70 | 664 | cFYI(1, "In tree disconnect"); |
1da177e4 | 665 | |
f1987b44 JL |
666 | /* BB: do we need to check this? These should never be NULL. */ |
667 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
668 | return -EIO; | |
1da177e4 | 669 | |
f1987b44 JL |
670 | /* |
671 | * No need to return error on this operation if tid invalidated and | |
672 | * closed on server already e.g. due to tcp session crashing. Also, | |
673 | * the tcon is no longer on the list, so no need to take lock before | |
674 | * checking this. | |
675 | */ | |
268875b9 | 676 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 677 | return 0; |
1da177e4 | 678 | |
50c2f753 | 679 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 680 | (void **)&smb_buffer); |
f1987b44 | 681 | if (rc) |
1da177e4 | 682 | return rc; |
133672ef SF |
683 | |
684 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 685 | if (rc) |
b6b38f70 | 686 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 687 | |
50c2f753 | 688 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 689 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
690 | if (rc == -EAGAIN) |
691 | rc = 0; | |
692 | ||
693 | return rc; | |
694 | } | |
695 | ||
696 | int | |
697 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
698 | { | |
1da177e4 LT |
699 | LOGOFF_ANDX_REQ *pSMB; |
700 | int rc = 0; | |
1da177e4 | 701 | |
b6b38f70 | 702 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 703 | |
14fbf50d JL |
704 | /* |
705 | * BB: do we need to check validity of ses and server? They should | |
706 | * always be valid since we have an active reference. If not, that | |
707 | * should probably be a BUG() | |
708 | */ | |
709 | if (!ses || !ses->server) | |
3b795210 SF |
710 | return -EIO; |
711 | ||
d7b619cf | 712 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
713 | if (ses->need_reconnect) |
714 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
715 | already closed due to reconnect */ | |
1da177e4 LT |
716 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
717 | if (rc) { | |
d7b619cf | 718 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
719 | return rc; |
720 | } | |
721 | ||
3b795210 | 722 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 723 | |
3b795210 | 724 | if (ses->server->secMode & |
1da177e4 LT |
725 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
726 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
727 | |
728 | pSMB->hdr.Uid = ses->Suid; | |
729 | ||
730 | pSMB->AndXCommand = 0xFF; | |
133672ef | 731 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 732 | session_already_dead: |
d7b619cf | 733 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
734 | |
735 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 736 | since server closed smb session, no sense reporting |
1da177e4 LT |
737 | error */ |
738 | if (rc == -EAGAIN) | |
739 | rc = 0; | |
740 | return rc; | |
741 | } | |
742 | ||
2d785a50 SF |
743 | int |
744 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
745 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
746 | { | |
747 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
748 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
749 | struct unlink_psx_rq *pRqD; | |
750 | int name_len; | |
751 | int rc = 0; | |
752 | int bytes_returned = 0; | |
753 | __u16 params, param_offset, offset, byte_count; | |
754 | ||
b6b38f70 | 755 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
756 | PsxDelete: |
757 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
758 | (void **) &pSMBr); | |
759 | if (rc) | |
760 | return rc; | |
761 | ||
762 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
763 | name_len = | |
764 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
765 | PATH_MAX, nls_codepage, remap); | |
766 | name_len++; /* trailing null */ | |
767 | name_len *= 2; | |
768 | } else { /* BB add path length overrun check */ | |
769 | name_len = strnlen(fileName, PATH_MAX); | |
770 | name_len++; /* trailing null */ | |
771 | strncpy(pSMB->FileName, fileName, name_len); | |
772 | } | |
773 | ||
774 | params = 6 + name_len; | |
775 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
776 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
777 | pSMB->MaxSetupCount = 0; | |
778 | pSMB->Reserved = 0; | |
779 | pSMB->Flags = 0; | |
780 | pSMB->Timeout = 0; | |
781 | pSMB->Reserved2 = 0; | |
782 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
783 | InformationLevel) - 4; | |
784 | offset = param_offset + params; | |
785 | ||
786 | /* Setup pointer to Request Data (inode type) */ | |
787 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
788 | pRqD->type = cpu_to_le16(type); | |
789 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
790 | pSMB->DataOffset = cpu_to_le16(offset); | |
791 | pSMB->SetupCount = 1; | |
792 | pSMB->Reserved3 = 0; | |
793 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
794 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
795 | ||
796 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
797 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
798 | pSMB->ParameterCount = cpu_to_le16(params); | |
799 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
800 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
801 | pSMB->Reserved4 = 0; | |
802 | pSMB->hdr.smb_buf_length += byte_count; | |
803 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
804 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
805 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 806 | if (rc) |
b6b38f70 | 807 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
808 | cifs_buf_release(pSMB); |
809 | ||
810 | cifs_stats_inc(&tcon->num_deletes); | |
811 | ||
812 | if (rc == -EAGAIN) | |
813 | goto PsxDelete; | |
814 | ||
815 | return rc; | |
816 | } | |
817 | ||
1da177e4 | 818 | int |
737b758c SF |
819 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
820 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
821 | { |
822 | DELETE_FILE_REQ *pSMB = NULL; | |
823 | DELETE_FILE_RSP *pSMBr = NULL; | |
824 | int rc = 0; | |
825 | int bytes_returned; | |
826 | int name_len; | |
827 | ||
828 | DelFileRetry: | |
829 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
830 | (void **) &pSMBr); | |
831 | if (rc) | |
832 | return rc; | |
833 | ||
834 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
835 | name_len = | |
50c2f753 | 836 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 837 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
838 | name_len++; /* trailing null */ |
839 | name_len *= 2; | |
09d1db5c | 840 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
841 | name_len = strnlen(fileName, PATH_MAX); |
842 | name_len++; /* trailing null */ | |
843 | strncpy(pSMB->fileName, fileName, name_len); | |
844 | } | |
845 | pSMB->SearchAttributes = | |
846 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
847 | pSMB->BufferFormat = 0x04; | |
848 | pSMB->hdr.smb_buf_length += name_len + 1; | |
849 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
850 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
851 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 852 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 853 | if (rc) |
b6b38f70 | 854 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
855 | |
856 | cifs_buf_release(pSMB); | |
857 | if (rc == -EAGAIN) | |
858 | goto DelFileRetry; | |
859 | ||
860 | return rc; | |
861 | } | |
862 | ||
863 | int | |
50c2f753 | 864 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 865 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
866 | { |
867 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
868 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
869 | int rc = 0; | |
870 | int bytes_returned; | |
871 | int name_len; | |
872 | ||
b6b38f70 | 873 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
874 | RmDirRetry: |
875 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
876 | (void **) &pSMBr); | |
877 | if (rc) | |
878 | return rc; | |
879 | ||
880 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
881 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
882 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
883 | name_len++; /* trailing null */ |
884 | name_len *= 2; | |
09d1db5c | 885 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
886 | name_len = strnlen(dirName, PATH_MAX); |
887 | name_len++; /* trailing null */ | |
888 | strncpy(pSMB->DirName, dirName, name_len); | |
889 | } | |
890 | ||
891 | pSMB->BufferFormat = 0x04; | |
892 | pSMB->hdr.smb_buf_length += name_len + 1; | |
893 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
894 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
895 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 896 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 897 | if (rc) |
b6b38f70 | 898 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
899 | |
900 | cifs_buf_release(pSMB); | |
901 | if (rc == -EAGAIN) | |
902 | goto RmDirRetry; | |
903 | return rc; | |
904 | } | |
905 | ||
906 | int | |
907 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 908 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
909 | { |
910 | int rc = 0; | |
911 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
912 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
913 | int bytes_returned; | |
914 | int name_len; | |
915 | ||
b6b38f70 | 916 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
917 | MkDirRetry: |
918 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
919 | (void **) &pSMBr); | |
920 | if (rc) | |
921 | return rc; | |
922 | ||
923 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 924 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 925 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
926 | name_len++; /* trailing null */ |
927 | name_len *= 2; | |
09d1db5c | 928 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
929 | name_len = strnlen(name, PATH_MAX); |
930 | name_len++; /* trailing null */ | |
931 | strncpy(pSMB->DirName, name, name_len); | |
932 | } | |
933 | ||
934 | pSMB->BufferFormat = 0x04; | |
935 | pSMB->hdr.smb_buf_length += name_len + 1; | |
936 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
937 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
938 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 939 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 940 | if (rc) |
b6b38f70 | 941 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 942 | |
1da177e4 LT |
943 | cifs_buf_release(pSMB); |
944 | if (rc == -EAGAIN) | |
945 | goto MkDirRetry; | |
946 | return rc; | |
947 | } | |
948 | ||
2dd29d31 SF |
949 | int |
950 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 951 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 952 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
953 | const struct nls_table *nls_codepage, int remap) |
954 | { | |
955 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
956 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
957 | int name_len; | |
958 | int rc = 0; | |
959 | int bytes_returned = 0; | |
2dd29d31 | 960 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
961 | OPEN_PSX_REQ *pdata; |
962 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 963 | |
b6b38f70 | 964 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
965 | PsxCreat: |
966 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
967 | (void **) &pSMBr); | |
968 | if (rc) | |
969 | return rc; | |
970 | ||
971 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
972 | name_len = | |
973 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
974 | PATH_MAX, nls_codepage, remap); | |
975 | name_len++; /* trailing null */ | |
976 | name_len *= 2; | |
977 | } else { /* BB improve the check for buffer overruns BB */ | |
978 | name_len = strnlen(name, PATH_MAX); | |
979 | name_len++; /* trailing null */ | |
980 | strncpy(pSMB->FileName, name, name_len); | |
981 | } | |
982 | ||
983 | params = 6 + name_len; | |
984 | count = sizeof(OPEN_PSX_REQ); | |
985 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
986 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
987 | pSMB->MaxSetupCount = 0; | |
988 | pSMB->Reserved = 0; | |
989 | pSMB->Flags = 0; | |
990 | pSMB->Timeout = 0; | |
991 | pSMB->Reserved2 = 0; | |
992 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 993 | InformationLevel) - 4; |
2dd29d31 | 994 | offset = param_offset + params; |
2dd29d31 | 995 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 996 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 997 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 998 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
999 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1000 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1001 | pSMB->DataOffset = cpu_to_le16(offset); | |
1002 | pSMB->SetupCount = 1; | |
1003 | pSMB->Reserved3 = 0; | |
1004 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1005 | byte_count = 3 /* pad */ + params + count; | |
1006 | ||
1007 | pSMB->DataCount = cpu_to_le16(count); | |
1008 | pSMB->ParameterCount = cpu_to_le16(params); | |
1009 | pSMB->TotalDataCount = pSMB->DataCount; | |
1010 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1011 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1012 | pSMB->Reserved4 = 0; | |
50c2f753 | 1013 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1014 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1015 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1016 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1017 | if (rc) { | |
b6b38f70 | 1018 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1019 | goto psx_create_err; |
1020 | } | |
1021 | ||
b6b38f70 | 1022 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1023 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1024 | ||
1025 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1026 | rc = -EIO; /* bad smb */ | |
1027 | goto psx_create_err; | |
1028 | } | |
1029 | ||
1030 | /* copy return information to pRetData */ | |
50c2f753 | 1031 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1032 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1033 | |
2dd29d31 | 1034 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1035 | if (netfid) |
2dd29d31 SF |
1036 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1037 | /* Let caller know file was created so we can set the mode. */ | |
1038 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1039 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1040 | *pOplock |= CIFS_CREATE_ACTION; |
1041 | /* check to make sure response data is there */ | |
8f2376ad CG |
1042 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1043 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1044 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1045 | } else { |
790fe579 | 1046 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1047 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1048 | cERROR(1, "Open response data too small"); |
8f2376ad | 1049 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1050 | goto psx_create_err; |
1051 | } | |
50c2f753 | 1052 | memcpy((char *) pRetData, |
cbac3cba | 1053 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1054 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1055 | } |
2dd29d31 SF |
1056 | |
1057 | psx_create_err: | |
1058 | cifs_buf_release(pSMB); | |
1059 | ||
65bc98b0 SF |
1060 | if (posix_flags & SMB_O_DIRECTORY) |
1061 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1062 | else | |
1063 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1064 | |
1065 | if (rc == -EAGAIN) | |
1066 | goto PsxCreat; | |
1067 | ||
50c2f753 | 1068 | return rc; |
2dd29d31 SF |
1069 | } |
1070 | ||
a9d02ad4 SF |
1071 | static __u16 convert_disposition(int disposition) |
1072 | { | |
1073 | __u16 ofun = 0; | |
1074 | ||
1075 | switch (disposition) { | |
1076 | case FILE_SUPERSEDE: | |
1077 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1078 | break; | |
1079 | case FILE_OPEN: | |
1080 | ofun = SMBOPEN_OAPPEND; | |
1081 | break; | |
1082 | case FILE_CREATE: | |
1083 | ofun = SMBOPEN_OCREATE; | |
1084 | break; | |
1085 | case FILE_OPEN_IF: | |
1086 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1087 | break; | |
1088 | case FILE_OVERWRITE: | |
1089 | ofun = SMBOPEN_OTRUNC; | |
1090 | break; | |
1091 | case FILE_OVERWRITE_IF: | |
1092 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1093 | break; | |
1094 | default: | |
b6b38f70 | 1095 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1096 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1097 | } | |
1098 | return ofun; | |
1099 | } | |
1100 | ||
35fc37d5 JL |
1101 | static int |
1102 | access_flags_to_smbopen_mode(const int access_flags) | |
1103 | { | |
1104 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1105 | ||
1106 | if (masked_flags == GENERIC_READ) | |
1107 | return SMBOPEN_READ; | |
1108 | else if (masked_flags == GENERIC_WRITE) | |
1109 | return SMBOPEN_WRITE; | |
1110 | ||
1111 | /* just go for read/write */ | |
1112 | return SMBOPEN_READWRITE; | |
1113 | } | |
1114 | ||
a9d02ad4 SF |
1115 | int |
1116 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1117 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1118 | const int access_flags, const int create_options, __u16 *netfid, |
1119 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1120 | const struct nls_table *nls_codepage, int remap) |
1121 | { | |
1122 | int rc = -EACCES; | |
1123 | OPENX_REQ *pSMB = NULL; | |
1124 | OPENX_RSP *pSMBr = NULL; | |
1125 | int bytes_returned; | |
1126 | int name_len; | |
1127 | __u16 count; | |
1128 | ||
1129 | OldOpenRetry: | |
1130 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1131 | (void **) &pSMBr); | |
1132 | if (rc) | |
1133 | return rc; | |
1134 | ||
1135 | pSMB->AndXCommand = 0xFF; /* none */ | |
1136 | ||
1137 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1138 | count = 1; /* account for one byte pad to word boundary */ | |
1139 | name_len = | |
1140 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1141 | fileName, PATH_MAX, nls_codepage, remap); | |
1142 | name_len++; /* trailing null */ | |
1143 | name_len *= 2; | |
1144 | } else { /* BB improve check for buffer overruns BB */ | |
1145 | count = 0; /* no pad */ | |
1146 | name_len = strnlen(fileName, PATH_MAX); | |
1147 | name_len++; /* trailing null */ | |
1148 | strncpy(pSMB->fileName, fileName, name_len); | |
1149 | } | |
1150 | if (*pOplock & REQ_OPLOCK) | |
1151 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1152 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1153 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1154 | |
a9d02ad4 | 1155 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1156 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1157 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1158 | /* set file as system file if special file such | |
1159 | as fifo and server expecting SFU style and | |
1160 | no Unix extensions */ | |
1161 | ||
790fe579 SF |
1162 | if (create_options & CREATE_OPTION_SPECIAL) |
1163 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1164 | else /* BB FIXME BB */ |
1165 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1166 | |
67750fb9 JL |
1167 | if (create_options & CREATE_OPTION_READONLY) |
1168 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1169 | |
1170 | /* BB FIXME BB */ | |
50c2f753 SF |
1171 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1172 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1173 | /* BB FIXME END BB */ |
3e87d803 SF |
1174 | |
1175 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1176 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1177 | count += name_len; |
1178 | pSMB->hdr.smb_buf_length += count; | |
1179 | ||
1180 | pSMB->ByteCount = cpu_to_le16(count); | |
1181 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1182 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1183 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a9d02ad4 SF |
1184 | cifs_stats_inc(&tcon->num_opens); |
1185 | if (rc) { | |
b6b38f70 | 1186 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1187 | } else { |
1188 | /* BB verify if wct == 15 */ | |
1189 | ||
582d21e5 | 1190 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1191 | |
1192 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1193 | /* Let caller know file was created so we can set the mode. */ | |
1194 | /* Do we care about the CreateAction in any other cases? */ | |
1195 | /* BB FIXME BB */ | |
790fe579 | 1196 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1197 | *pOplock |= CIFS_CREATE_ACTION; */ |
1198 | /* BB FIXME END */ | |
1199 | ||
790fe579 | 1200 | if (pfile_info) { |
a9d02ad4 SF |
1201 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1202 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1203 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1204 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1205 | pfile_info->Attributes = |
50c2f753 | 1206 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1207 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1208 | pfile_info->AllocationSize = |
1209 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1210 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1211 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1212 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1213 | } |
1214 | } | |
1215 | ||
1216 | cifs_buf_release(pSMB); | |
1217 | if (rc == -EAGAIN) | |
1218 | goto OldOpenRetry; | |
1219 | return rc; | |
1220 | } | |
1221 | ||
1da177e4 LT |
1222 | int |
1223 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1224 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1225 | const int access_flags, const int create_options, __u16 *netfid, |
1226 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1227 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1228 | { |
1229 | int rc = -EACCES; | |
1230 | OPEN_REQ *pSMB = NULL; | |
1231 | OPEN_RSP *pSMBr = NULL; | |
1232 | int bytes_returned; | |
1233 | int name_len; | |
1234 | __u16 count; | |
1235 | ||
1236 | openRetry: | |
1237 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1238 | (void **) &pSMBr); | |
1239 | if (rc) | |
1240 | return rc; | |
1241 | ||
1242 | pSMB->AndXCommand = 0xFF; /* none */ | |
1243 | ||
1244 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1245 | count = 1; /* account for one byte pad to word boundary */ | |
1246 | name_len = | |
b1a45695 | 1247 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1248 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1249 | name_len++; /* trailing null */ |
1250 | name_len *= 2; | |
1251 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1252 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1253 | count = 0; /* no pad */ |
1254 | name_len = strnlen(fileName, PATH_MAX); | |
1255 | name_len++; /* trailing null */ | |
1256 | pSMB->NameLength = cpu_to_le16(name_len); | |
1257 | strncpy(pSMB->fileName, fileName, name_len); | |
1258 | } | |
1259 | if (*pOplock & REQ_OPLOCK) | |
1260 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1261 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1262 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1263 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1264 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1265 | /* set file as system file if special file such |
1266 | as fifo and server expecting SFU style and | |
1267 | no Unix extensions */ | |
790fe579 | 1268 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1269 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1270 | else | |
1271 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1272 | |
1da177e4 LT |
1273 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1274 | /* but it helps speed up case sensitive checks for other | |
1275 | servers such as Samba */ | |
1276 | if (tcon->ses->capabilities & CAP_UNIX) | |
1277 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1278 | ||
67750fb9 JL |
1279 | if (create_options & CREATE_OPTION_READONLY) |
1280 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1281 | ||
1da177e4 LT |
1282 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1283 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1284 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1285 | /* BB Expirement with various impersonation levels and verify */ |
1286 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1287 | pSMB->SecurityFlags = |
1288 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1289 | ||
1290 | count += name_len; | |
1291 | pSMB->hdr.smb_buf_length += count; | |
1292 | ||
1293 | pSMB->ByteCount = cpu_to_le16(count); | |
1294 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1295 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1296 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a4544347 | 1297 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1298 | if (rc) { |
b6b38f70 | 1299 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1300 | } else { |
09d1db5c | 1301 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1302 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1303 | /* Let caller know file was created so we can set the mode. */ | |
1304 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1305 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1306 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1307 | if (pfile_info) { |
61e74801 SF |
1308 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1309 | 36 /* CreationTime to Attributes */); | |
1310 | /* the file_info buf is endian converted by caller */ | |
1311 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1312 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1313 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1314 | pfile_info->DeletePending = 0; | |
1da177e4 | 1315 | } |
1da177e4 | 1316 | } |
a5a2b489 | 1317 | |
1da177e4 LT |
1318 | cifs_buf_release(pSMB); |
1319 | if (rc == -EAGAIN) | |
1320 | goto openRetry; | |
1321 | return rc; | |
1322 | } | |
1323 | ||
1da177e4 | 1324 | int |
50c2f753 SF |
1325 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1326 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1327 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1328 | { |
1329 | int rc = -EACCES; | |
1330 | READ_REQ *pSMB = NULL; | |
1331 | READ_RSP *pSMBr = NULL; | |
1332 | char *pReadData = NULL; | |
bfa0d75a | 1333 | int wct; |
ec637e3f SF |
1334 | int resp_buf_type = 0; |
1335 | struct kvec iov[1]; | |
1da177e4 | 1336 | |
b6b38f70 | 1337 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1338 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1339 | wct = 12; |
4c3130ef | 1340 | else { |
bfa0d75a | 1341 | wct = 10; /* old style read */ |
4c3130ef SF |
1342 | if ((lseek >> 32) > 0) { |
1343 | /* can not handle this big offset for old */ | |
1344 | return -EIO; | |
1345 | } | |
1346 | } | |
1da177e4 LT |
1347 | |
1348 | *nbytes = 0; | |
ec637e3f | 1349 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1350 | if (rc) |
1351 | return rc; | |
1352 | ||
1353 | /* tcon and ses pointer are checked in smb_init */ | |
1354 | if (tcon->ses->server == NULL) | |
1355 | return -ECONNABORTED; | |
1356 | ||
ec637e3f | 1357 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1358 | pSMB->Fid = netfid; |
1359 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1360 | if (wct == 12) |
bfa0d75a | 1361 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1362 | |
1da177e4 LT |
1363 | pSMB->Remaining = 0; |
1364 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1365 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1366 | if (wct == 12) |
bfa0d75a SF |
1367 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1368 | else { | |
1369 | /* old style read */ | |
50c2f753 | 1370 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1371 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1372 | pSMBW->ByteCount = 0; |
bfa0d75a | 1373 | } |
ec637e3f SF |
1374 | |
1375 | iov[0].iov_base = (char *)pSMB; | |
1376 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
a761ac57 | 1377 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
133672ef | 1378 | &resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR); |
a4544347 | 1379 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1380 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1381 | if (rc) { |
b6b38f70 | 1382 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1383 | } else { |
1384 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1385 | data_length = data_length << 16; | |
1386 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1387 | *nbytes = data_length; | |
1388 | ||
1389 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1390 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1391 | || (data_length > count)) { |
b6b38f70 JP |
1392 | cFYI(1, "bad length %d for count %d", |
1393 | data_length, count); | |
1da177e4 LT |
1394 | rc = -EIO; |
1395 | *nbytes = 0; | |
1396 | } else { | |
ec637e3f | 1397 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1398 | le16_to_cpu(pSMBr->DataOffset); |
1399 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1400 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1401 | rc = -EFAULT; |
26f57364 | 1402 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1403 | if (*buf) |
50c2f753 | 1404 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1405 | } |
1406 | } | |
1da177e4 | 1407 | |
4b8f930f | 1408 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1409 | if (*buf) { |
1410 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1411 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1412 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1413 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1414 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1415 | /* return buffer to caller to free */ |
1416 | *buf = iov[0].iov_base; | |
790fe579 | 1417 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1418 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1419 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1420 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1421 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1422 | |
1423 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1424 | since file handle passed in no longer valid */ |
1425 | return rc; | |
1426 | } | |
1427 | ||
ec637e3f | 1428 | |
1da177e4 LT |
1429 | int |
1430 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1431 | const int netfid, const unsigned int count, | |
1432 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1433 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1434 | { |
1435 | int rc = -EACCES; | |
1436 | WRITE_REQ *pSMB = NULL; | |
1437 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1438 | int bytes_returned, wct; |
1da177e4 LT |
1439 | __u32 bytes_sent; |
1440 | __u16 byte_count; | |
1441 | ||
a24e2d7d SF |
1442 | *nbytes = 0; |
1443 | ||
b6b38f70 | 1444 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1445 | if (tcon->ses == NULL) |
1c955187 SF |
1446 | return -ECONNABORTED; |
1447 | ||
790fe579 | 1448 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1449 | wct = 14; |
4c3130ef | 1450 | else { |
1c955187 | 1451 | wct = 12; |
4c3130ef SF |
1452 | if ((offset >> 32) > 0) { |
1453 | /* can not handle big offset for old srv */ | |
1454 | return -EIO; | |
1455 | } | |
1456 | } | |
1c955187 SF |
1457 | |
1458 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1459 | (void **) &pSMBr); |
1460 | if (rc) | |
1461 | return rc; | |
1462 | /* tcon and ses pointer are checked in smb_init */ | |
1463 | if (tcon->ses->server == NULL) | |
1464 | return -ECONNABORTED; | |
1465 | ||
1466 | pSMB->AndXCommand = 0xFF; /* none */ | |
1467 | pSMB->Fid = netfid; | |
1468 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1469 | if (wct == 14) |
1c955187 | 1470 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1471 | |
1da177e4 LT |
1472 | pSMB->Reserved = 0xFFFFFFFF; |
1473 | pSMB->WriteMode = 0; | |
1474 | pSMB->Remaining = 0; | |
1475 | ||
50c2f753 | 1476 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1477 | can send more if LARGE_WRITE_X capability returned by the server and if |
1478 | our buffer is big enough or if we convert to iovecs on socket writes | |
1479 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1480 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1481 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1482 | } else { | |
1483 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1484 | & ~0xFF; | |
1485 | } | |
1486 | ||
1487 | if (bytes_sent > count) | |
1488 | bytes_sent = count; | |
1489 | pSMB->DataOffset = | |
50c2f753 | 1490 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1491 | if (buf) |
61e74801 | 1492 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1493 | else if (ubuf) { |
1494 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1495 | cifs_buf_release(pSMB); |
1496 | return -EFAULT; | |
1497 | } | |
e30dcf3a | 1498 | } else if (count != 0) { |
1da177e4 LT |
1499 | /* No buffer */ |
1500 | cifs_buf_release(pSMB); | |
1501 | return -EINVAL; | |
e30dcf3a | 1502 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1503 | if (wct == 14) |
e30dcf3a | 1504 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1505 | else /* wct == 12 */ |
e30dcf3a | 1506 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1507 | |
1da177e4 LT |
1508 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1509 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1510 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1511 | |
790fe579 | 1512 | if (wct == 14) |
1c955187 | 1513 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1514 | else { /* old style write has byte count 4 bytes earlier |
1515 | so 4 bytes pad */ | |
1516 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1517 | (struct smb_com_writex_req *)pSMB; |
1518 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1519 | } | |
1da177e4 LT |
1520 | |
1521 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1522 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1523 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1524 | if (rc) { |
f19159dc | 1525 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1526 | } else { |
1527 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1528 | *nbytes = (*nbytes) << 16; | |
1529 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1530 | |
1531 | /* | |
1532 | * Mask off high 16 bits when bytes written as returned by the | |
1533 | * server is greater than bytes requested by the client. Some | |
1534 | * OS/2 servers are known to set incorrect CountHigh values. | |
1535 | */ | |
1536 | if (*nbytes > count) | |
1537 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1538 | } |
1539 | ||
1540 | cifs_buf_release(pSMB); | |
1541 | ||
50c2f753 | 1542 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1543 | since file handle passed in no longer valid */ |
1544 | ||
1545 | return rc; | |
1546 | } | |
1547 | ||
d6e04ae6 SF |
1548 | int |
1549 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1550 | const int netfid, const unsigned int count, |
3e84469d SF |
1551 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1552 | int n_vec, const int long_op) | |
1da177e4 LT |
1553 | { |
1554 | int rc = -EACCES; | |
1555 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1556 | int wct; |
d6e04ae6 | 1557 | int smb_hdr_len; |
ec637e3f | 1558 | int resp_buf_type = 0; |
1da177e4 | 1559 | |
fbec9ab9 JL |
1560 | *nbytes = 0; |
1561 | ||
b6b38f70 | 1562 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 1563 | |
4c3130ef | 1564 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1565 | wct = 14; |
4c3130ef | 1566 | } else { |
8cc64c6e | 1567 | wct = 12; |
4c3130ef SF |
1568 | if ((offset >> 32) > 0) { |
1569 | /* can not handle big offset for old srv */ | |
1570 | return -EIO; | |
1571 | } | |
1572 | } | |
8cc64c6e | 1573 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1574 | if (rc) |
1575 | return rc; | |
1da177e4 LT |
1576 | /* tcon and ses pointer are checked in smb_init */ |
1577 | if (tcon->ses->server == NULL) | |
1578 | return -ECONNABORTED; | |
1579 | ||
d6e04ae6 | 1580 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1581 | pSMB->Fid = netfid; |
1582 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1583 | if (wct == 14) |
8cc64c6e | 1584 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1585 | pSMB->Reserved = 0xFFFFFFFF; |
1586 | pSMB->WriteMode = 0; | |
1587 | pSMB->Remaining = 0; | |
d6e04ae6 | 1588 | |
1da177e4 | 1589 | pSMB->DataOffset = |
50c2f753 | 1590 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1591 | |
3e84469d SF |
1592 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1593 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1594 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1595 | if (wct == 14) |
8cc64c6e SF |
1596 | pSMB->hdr.smb_buf_length += count+1; |
1597 | else /* wct == 12 */ | |
790fe579 SF |
1598 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1599 | if (wct == 14) | |
8cc64c6e SF |
1600 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1601 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1602 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1603 | (struct smb_com_writex_req *)pSMB; |
1604 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1605 | } | |
3e84469d | 1606 | iov[0].iov_base = pSMB; |
790fe579 | 1607 | if (wct == 14) |
ec637e3f SF |
1608 | iov[0].iov_len = smb_hdr_len + 4; |
1609 | else /* wct == 12 pad bigger by four bytes */ | |
1610 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1611 | |
1da177e4 | 1612 | |
ec637e3f | 1613 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1614 | long_op); |
a4544347 | 1615 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1616 | if (rc) { |
b6b38f70 | 1617 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 1618 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1619 | /* presumably this can not happen, but best to be safe */ |
1620 | rc = -EIO; | |
d6e04ae6 | 1621 | } else { |
ad7a2926 | 1622 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1623 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1624 | *nbytes = (*nbytes) << 16; | |
1625 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1626 | |
1627 | /* | |
1628 | * Mask off high 16 bits when bytes written as returned by the | |
1629 | * server is greater than bytes requested by the client. OS/2 | |
1630 | * servers are known to set incorrect CountHigh values. | |
1631 | */ | |
1632 | if (*nbytes > count) | |
1633 | *nbytes &= 0xFFFF; | |
50c2f753 | 1634 | } |
1da177e4 | 1635 | |
4b8f930f | 1636 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1637 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1638 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1639 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1640 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1641 | |
50c2f753 | 1642 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1643 | since file handle passed in no longer valid */ |
1644 | ||
1645 | return rc; | |
1646 | } | |
d6e04ae6 SF |
1647 | |
1648 | ||
1da177e4 LT |
1649 | int |
1650 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1651 | const __u16 smb_file_id, const __u64 len, | |
1652 | const __u64 offset, const __u32 numUnlock, | |
4b18f2a9 | 1653 | const __u32 numLock, const __u8 lockType, const bool waitFlag) |
1da177e4 LT |
1654 | { |
1655 | int rc = 0; | |
1656 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1657 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1658 | int bytes_returned; |
1659 | int timeout = 0; | |
1660 | __u16 count; | |
1661 | ||
b6b38f70 | 1662 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
1663 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1664 | ||
1da177e4 LT |
1665 | if (rc) |
1666 | return rc; | |
1667 | ||
790fe579 | 1668 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1669 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1670 | pSMB->Timeout = 0; |
4b18f2a9 | 1671 | } else if (waitFlag) { |
133672ef | 1672 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1673 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1674 | } else { | |
1675 | pSMB->Timeout = 0; | |
1676 | } | |
1677 | ||
1678 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1679 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1680 | pSMB->LockType = lockType; | |
1681 | pSMB->AndXCommand = 0xFF; /* none */ | |
1682 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1683 | ||
790fe579 | 1684 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1685 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1686 | /* BB where to store pid high? */ | |
1687 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1688 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1689 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1690 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1691 | count = sizeof(LOCKING_ANDX_RANGE); | |
1692 | } else { | |
1693 | /* oplock break */ | |
1694 | count = 0; | |
1695 | } | |
1696 | pSMB->hdr.smb_buf_length += count; | |
1697 | pSMB->ByteCount = cpu_to_le16(count); | |
1698 | ||
7ee1af76 JA |
1699 | if (waitFlag) { |
1700 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1701 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1702 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1703 | } else { |
133672ef SF |
1704 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1705 | timeout); | |
1706 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1707 | } |
a4544347 | 1708 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1709 | if (rc) |
b6b38f70 | 1710 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 1711 | |
50c2f753 | 1712 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1713 | since file handle passed in no longer valid */ |
1714 | return rc; | |
1715 | } | |
1716 | ||
08547b03 SF |
1717 | int |
1718 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1719 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1720 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1721 | const bool waitFlag) |
08547b03 SF |
1722 | { |
1723 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1724 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1725 | struct cifs_posix_lock *parm_data; |
1726 | int rc = 0; | |
3a5ff61c | 1727 | int timeout = 0; |
08547b03 | 1728 | int bytes_returned = 0; |
133672ef | 1729 | int resp_buf_type = 0; |
08547b03 | 1730 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1731 | struct kvec iov[1]; |
08547b03 | 1732 | |
b6b38f70 | 1733 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 1734 | |
790fe579 | 1735 | if (pLockData == NULL) |
ed5f0370 | 1736 | return -EINVAL; |
fc94cdb9 | 1737 | |
08547b03 SF |
1738 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1739 | ||
1740 | if (rc) | |
1741 | return rc; | |
1742 | ||
1743 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1744 | ||
50c2f753 | 1745 | params = 6; |
08547b03 SF |
1746 | pSMB->MaxSetupCount = 0; |
1747 | pSMB->Reserved = 0; | |
1748 | pSMB->Flags = 0; | |
08547b03 SF |
1749 | pSMB->Reserved2 = 0; |
1750 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1751 | offset = param_offset + params; | |
1752 | ||
08547b03 SF |
1753 | count = sizeof(struct cifs_posix_lock); |
1754 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1755 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1756 | pSMB->SetupCount = 1; |
1757 | pSMB->Reserved3 = 0; | |
790fe579 | 1758 | if (get_flag) |
08547b03 SF |
1759 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1760 | else | |
1761 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1762 | byte_count = 3 /* pad */ + params + count; | |
1763 | pSMB->DataCount = cpu_to_le16(count); | |
1764 | pSMB->ParameterCount = cpu_to_le16(params); | |
1765 | pSMB->TotalDataCount = pSMB->DataCount; | |
1766 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1767 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1768 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1769 | (((char *) &pSMB->hdr.Protocol) + offset); |
1770 | ||
1771 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1772 | if (waitFlag) { |
133672ef | 1773 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1774 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1775 | pSMB->Timeout = cpu_to_le32(-1); |
1776 | } else | |
1777 | pSMB->Timeout = 0; | |
1778 | ||
08547b03 | 1779 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1780 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1781 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1782 | |
1783 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1784 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1785 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1786 | pSMB->Reserved4 = 0; | |
1787 | pSMB->hdr.smb_buf_length += byte_count; | |
1788 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1789 | if (waitFlag) { |
1790 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1791 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1792 | } else { | |
133672ef SF |
1793 | iov[0].iov_base = (char *)pSMB; |
1794 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1795 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1796 | &resp_buf_type, timeout); | |
1797 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1798 | not try to free it twice below on exit */ | |
1799 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1800 | } |
1801 | ||
08547b03 | 1802 | if (rc) { |
b6b38f70 | 1803 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
1804 | } else if (get_flag) { |
1805 | /* lock structure can be returned on get */ | |
1806 | __u16 data_offset; | |
1807 | __u16 data_count; | |
1808 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1809 | ||
1810 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1811 | rc = -EIO; /* bad smb */ | |
1812 | goto plk_err_exit; | |
1813 | } | |
fc94cdb9 SF |
1814 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1815 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1816 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1817 | rc = -EIO; |
1818 | goto plk_err_exit; | |
1819 | } | |
1820 | parm_data = (struct cifs_posix_lock *) | |
1821 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 1822 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1823 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
1824 | else { |
1825 | if (parm_data->lock_type == | |
1826 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
1827 | pLockData->fl_type = F_RDLCK; | |
1828 | else if (parm_data->lock_type == | |
1829 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
1830 | pLockData->fl_type = F_WRLCK; | |
1831 | ||
1832 | pLockData->fl_start = parm_data->start; | |
1833 | pLockData->fl_end = parm_data->start + | |
1834 | parm_data->length - 1; | |
1835 | pLockData->fl_pid = parm_data->pid; | |
1836 | } | |
08547b03 | 1837 | } |
50c2f753 | 1838 | |
fc94cdb9 | 1839 | plk_err_exit: |
08547b03 SF |
1840 | if (pSMB) |
1841 | cifs_small_buf_release(pSMB); | |
1842 | ||
133672ef SF |
1843 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1844 | cifs_small_buf_release(iov[0].iov_base); | |
1845 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1846 | cifs_buf_release(iov[0].iov_base); | |
1847 | ||
08547b03 SF |
1848 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1849 | since file handle passed in no longer valid */ | |
1850 | ||
1851 | return rc; | |
1852 | } | |
1853 | ||
1854 | ||
1da177e4 LT |
1855 | int |
1856 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1857 | { | |
1858 | int rc = 0; | |
1859 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 1860 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
1861 | |
1862 | /* do not retry on dead session on close */ | |
1863 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1864 | if (rc == -EAGAIN) |
1da177e4 LT |
1865 | return 0; |
1866 | if (rc) | |
1867 | return rc; | |
1868 | ||
1da177e4 | 1869 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1870 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1871 | pSMB->ByteCount = 0; |
133672ef | 1872 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1873 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1874 | if (rc) { |
790fe579 | 1875 | if (rc != -EINTR) { |
1da177e4 | 1876 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 1877 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
1878 | } |
1879 | } | |
1880 | ||
1da177e4 | 1881 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1882 | if (rc == -EAGAIN) |
1da177e4 LT |
1883 | rc = 0; |
1884 | ||
1885 | return rc; | |
1886 | } | |
1887 | ||
b298f223 SF |
1888 | int |
1889 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1890 | { | |
1891 | int rc = 0; | |
1892 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 1893 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
1894 | |
1895 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
1896 | if (rc) | |
1897 | return rc; | |
1898 | ||
1899 | pSMB->FileID = (__u16) smb_file_id; | |
1900 | pSMB->ByteCount = 0; | |
1901 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1902 | cifs_stats_inc(&tcon->num_flushes); | |
1903 | if (rc) | |
b6b38f70 | 1904 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
1905 | |
1906 | return rc; | |
1907 | } | |
1908 | ||
1da177e4 LT |
1909 | int |
1910 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1911 | const char *fromName, const char *toName, | |
737b758c | 1912 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1913 | { |
1914 | int rc = 0; | |
1915 | RENAME_REQ *pSMB = NULL; | |
1916 | RENAME_RSP *pSMBr = NULL; | |
1917 | int bytes_returned; | |
1918 | int name_len, name_len2; | |
1919 | __u16 count; | |
1920 | ||
b6b38f70 | 1921 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
1922 | renameRetry: |
1923 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1924 | (void **) &pSMBr); | |
1925 | if (rc) | |
1926 | return rc; | |
1927 | ||
1928 | pSMB->BufferFormat = 0x04; | |
1929 | pSMB->SearchAttributes = | |
1930 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1931 | ATTR_DIRECTORY); | |
1932 | ||
1933 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1934 | name_len = | |
50c2f753 | 1935 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1936 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1937 | name_len++; /* trailing null */ |
1938 | name_len *= 2; | |
1939 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1940 | /* protocol requires ASCII signature byte on Unicode string */ | |
1941 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1942 | name_len2 = | |
582d21e5 | 1943 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1944 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1945 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1946 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 1947 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
1948 | name_len = strnlen(fromName, PATH_MAX); |
1949 | name_len++; /* trailing null */ | |
1950 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1951 | name_len2 = strnlen(toName, PATH_MAX); | |
1952 | name_len2++; /* trailing null */ | |
1953 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1954 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1955 | name_len2++; /* trailing null */ | |
1956 | name_len2++; /* signature byte */ | |
1957 | } | |
1958 | ||
1959 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1960 | pSMB->hdr.smb_buf_length += count; | |
1961 | pSMB->ByteCount = cpu_to_le16(count); | |
1962 | ||
1963 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1964 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1965 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 1966 | if (rc) |
b6b38f70 | 1967 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 1968 | |
1da177e4 LT |
1969 | cifs_buf_release(pSMB); |
1970 | ||
1971 | if (rc == -EAGAIN) | |
1972 | goto renameRetry; | |
1973 | ||
1974 | return rc; | |
1975 | } | |
1976 | ||
50c2f753 | 1977 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 1978 | int netfid, const char *target_name, |
50c2f753 | 1979 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1980 | { |
1981 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1982 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 1983 | struct set_file_rename *rename_info; |
1da177e4 LT |
1984 | char *data_offset; |
1985 | char dummy_string[30]; | |
1986 | int rc = 0; | |
1987 | int bytes_returned = 0; | |
1988 | int len_of_str; | |
1989 | __u16 params, param_offset, offset, count, byte_count; | |
1990 | ||
b6b38f70 | 1991 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
1992 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
1993 | (void **) &pSMBr); | |
1994 | if (rc) | |
1995 | return rc; | |
1996 | ||
1997 | params = 6; | |
1998 | pSMB->MaxSetupCount = 0; | |
1999 | pSMB->Reserved = 0; | |
2000 | pSMB->Flags = 0; | |
2001 | pSMB->Timeout = 0; | |
2002 | pSMB->Reserved2 = 0; | |
2003 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2004 | offset = param_offset + params; | |
2005 | ||
2006 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2007 | rename_info = (struct set_file_rename *) data_offset; | |
2008 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2009 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2010 | pSMB->SetupCount = 1; |
2011 | pSMB->Reserved3 = 0; | |
2012 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2013 | byte_count = 3 /* pad */ + params; | |
2014 | pSMB->ParameterCount = cpu_to_le16(params); | |
2015 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2016 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2017 | pSMB->DataOffset = cpu_to_le16(offset); | |
2018 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2019 | rename_info->overwrite = cpu_to_le32(1); | |
2020 | rename_info->root_fid = 0; | |
2021 | /* unicode only call */ | |
790fe579 | 2022 | if (target_name == NULL) { |
50c2f753 SF |
2023 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2024 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2025 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2026 | } else { |
b1a45695 | 2027 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2028 | target_name, PATH_MAX, nls_codepage, |
2029 | remap); | |
1da177e4 LT |
2030 | } |
2031 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2032 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2033 | byte_count += count; |
2034 | pSMB->DataCount = cpu_to_le16(count); | |
2035 | pSMB->TotalDataCount = pSMB->DataCount; | |
2036 | pSMB->Fid = netfid; | |
2037 | pSMB->InformationLevel = | |
2038 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2039 | pSMB->Reserved4 = 0; | |
2040 | pSMB->hdr.smb_buf_length += byte_count; | |
2041 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2042 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2043 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2044 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2045 | if (rc) |
b6b38f70 | 2046 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2047 | |
1da177e4 LT |
2048 | cifs_buf_release(pSMB); |
2049 | ||
2050 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2051 | since file handle passed in no longer valid */ | |
2052 | ||
2053 | return rc; | |
2054 | } | |
2055 | ||
2056 | int | |
50c2f753 SF |
2057 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2058 | const __u16 target_tid, const char *toName, const int flags, | |
2059 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2060 | { |
2061 | int rc = 0; | |
2062 | COPY_REQ *pSMB = NULL; | |
2063 | COPY_RSP *pSMBr = NULL; | |
2064 | int bytes_returned; | |
2065 | int name_len, name_len2; | |
2066 | __u16 count; | |
2067 | ||
b6b38f70 | 2068 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2069 | copyRetry: |
2070 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2071 | (void **) &pSMBr); | |
2072 | if (rc) | |
2073 | return rc; | |
2074 | ||
2075 | pSMB->BufferFormat = 0x04; | |
2076 | pSMB->Tid2 = target_tid; | |
2077 | ||
2078 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2079 | ||
2080 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2081 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2082 | fromName, PATH_MAX, nls_codepage, |
2083 | remap); | |
1da177e4 LT |
2084 | name_len++; /* trailing null */ |
2085 | name_len *= 2; | |
2086 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2087 | /* protocol requires ASCII signature byte on Unicode string */ | |
2088 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2089 | name_len2 = |
2090 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2091 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2092 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2093 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2094 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2095 | name_len = strnlen(fromName, PATH_MAX); |
2096 | name_len++; /* trailing null */ | |
2097 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2098 | name_len2 = strnlen(toName, PATH_MAX); | |
2099 | name_len2++; /* trailing null */ | |
2100 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2101 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2102 | name_len2++; /* trailing null */ | |
2103 | name_len2++; /* signature byte */ | |
2104 | } | |
2105 | ||
2106 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2107 | pSMB->hdr.smb_buf_length += count; | |
2108 | pSMB->ByteCount = cpu_to_le16(count); | |
2109 | ||
2110 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2111 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2112 | if (rc) { | |
b6b38f70 JP |
2113 | cFYI(1, "Send error in copy = %d with %d files copied", |
2114 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2115 | } |
0d817bc0 | 2116 | cifs_buf_release(pSMB); |
1da177e4 LT |
2117 | |
2118 | if (rc == -EAGAIN) | |
2119 | goto copyRetry; | |
2120 | ||
2121 | return rc; | |
2122 | } | |
2123 | ||
2124 | int | |
2125 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2126 | const char *fromName, const char *toName, | |
2127 | const struct nls_table *nls_codepage) | |
2128 | { | |
2129 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2130 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2131 | char *data_offset; | |
2132 | int name_len; | |
2133 | int name_len_target; | |
2134 | int rc = 0; | |
2135 | int bytes_returned = 0; | |
2136 | __u16 params, param_offset, offset, byte_count; | |
2137 | ||
b6b38f70 | 2138 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2139 | createSymLinkRetry: |
2140 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2141 | (void **) &pSMBr); | |
2142 | if (rc) | |
2143 | return rc; | |
2144 | ||
2145 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2146 | name_len = | |
e89dc920 | 2147 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2148 | /* find define for this maxpathcomponent */ |
2149 | , nls_codepage); | |
2150 | name_len++; /* trailing null */ | |
2151 | name_len *= 2; | |
2152 | ||
50c2f753 | 2153 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2154 | name_len = strnlen(fromName, PATH_MAX); |
2155 | name_len++; /* trailing null */ | |
2156 | strncpy(pSMB->FileName, fromName, name_len); | |
2157 | } | |
2158 | params = 6 + name_len; | |
2159 | pSMB->MaxSetupCount = 0; | |
2160 | pSMB->Reserved = 0; | |
2161 | pSMB->Flags = 0; | |
2162 | pSMB->Timeout = 0; | |
2163 | pSMB->Reserved2 = 0; | |
2164 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2165 | InformationLevel) - 4; |
1da177e4 LT |
2166 | offset = param_offset + params; |
2167 | ||
2168 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2169 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2170 | name_len_target = | |
e89dc920 | 2171 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2172 | /* find define for this maxpathcomponent */ |
2173 | , nls_codepage); | |
2174 | name_len_target++; /* trailing null */ | |
2175 | name_len_target *= 2; | |
50c2f753 | 2176 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2177 | name_len_target = strnlen(toName, PATH_MAX); |
2178 | name_len_target++; /* trailing null */ | |
2179 | strncpy(data_offset, toName, name_len_target); | |
2180 | } | |
2181 | ||
2182 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2183 | /* BB find exact max on data count below from sess */ | |
2184 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2185 | pSMB->SetupCount = 1; | |
2186 | pSMB->Reserved3 = 0; | |
2187 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2188 | byte_count = 3 /* pad */ + params + name_len_target; | |
2189 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2190 | pSMB->ParameterCount = cpu_to_le16(params); | |
2191 | pSMB->TotalDataCount = pSMB->DataCount; | |
2192 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2193 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2194 | pSMB->DataOffset = cpu_to_le16(offset); | |
2195 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2196 | pSMB->Reserved4 = 0; | |
2197 | pSMB->hdr.smb_buf_length += byte_count; | |
2198 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2199 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2200 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2201 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2202 | if (rc) |
b6b38f70 | 2203 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2204 | |
0d817bc0 | 2205 | cifs_buf_release(pSMB); |
1da177e4 LT |
2206 | |
2207 | if (rc == -EAGAIN) | |
2208 | goto createSymLinkRetry; | |
2209 | ||
2210 | return rc; | |
2211 | } | |
2212 | ||
2213 | int | |
2214 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2215 | const char *fromName, const char *toName, | |
737b758c | 2216 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2217 | { |
2218 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2219 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2220 | char *data_offset; | |
2221 | int name_len; | |
2222 | int name_len_target; | |
2223 | int rc = 0; | |
2224 | int bytes_returned = 0; | |
2225 | __u16 params, param_offset, offset, byte_count; | |
2226 | ||
b6b38f70 | 2227 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2228 | createHardLinkRetry: |
2229 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2230 | (void **) &pSMBr); | |
2231 | if (rc) | |
2232 | return rc; | |
2233 | ||
2234 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2235 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2236 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2237 | name_len++; /* trailing null */ |
2238 | name_len *= 2; | |
2239 | ||
50c2f753 | 2240 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2241 | name_len = strnlen(toName, PATH_MAX); |
2242 | name_len++; /* trailing null */ | |
2243 | strncpy(pSMB->FileName, toName, name_len); | |
2244 | } | |
2245 | params = 6 + name_len; | |
2246 | pSMB->MaxSetupCount = 0; | |
2247 | pSMB->Reserved = 0; | |
2248 | pSMB->Flags = 0; | |
2249 | pSMB->Timeout = 0; | |
2250 | pSMB->Reserved2 = 0; | |
2251 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2252 | InformationLevel) - 4; |
1da177e4 LT |
2253 | offset = param_offset + params; |
2254 | ||
2255 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2256 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2257 | name_len_target = | |
b1a45695 | 2258 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2259 | nls_codepage, remap); |
1da177e4 LT |
2260 | name_len_target++; /* trailing null */ |
2261 | name_len_target *= 2; | |
50c2f753 | 2262 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2263 | name_len_target = strnlen(fromName, PATH_MAX); |
2264 | name_len_target++; /* trailing null */ | |
2265 | strncpy(data_offset, fromName, name_len_target); | |
2266 | } | |
2267 | ||
2268 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2269 | /* BB find exact max on data count below from sess*/ | |
2270 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2271 | pSMB->SetupCount = 1; | |
2272 | pSMB->Reserved3 = 0; | |
2273 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2274 | byte_count = 3 /* pad */ + params + name_len_target; | |
2275 | pSMB->ParameterCount = cpu_to_le16(params); | |
2276 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2277 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2278 | pSMB->TotalDataCount = pSMB->DataCount; | |
2279 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2280 | pSMB->DataOffset = cpu_to_le16(offset); | |
2281 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2282 | pSMB->Reserved4 = 0; | |
2283 | pSMB->hdr.smb_buf_length += byte_count; | |
2284 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2285 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2286 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2287 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2288 | if (rc) |
b6b38f70 | 2289 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2290 | |
2291 | cifs_buf_release(pSMB); | |
2292 | if (rc == -EAGAIN) | |
2293 | goto createHardLinkRetry; | |
2294 | ||
2295 | return rc; | |
2296 | } | |
2297 | ||
2298 | int | |
2299 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2300 | const char *fromName, const char *toName, | |
737b758c | 2301 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2302 | { |
2303 | int rc = 0; | |
2304 | NT_RENAME_REQ *pSMB = NULL; | |
2305 | RENAME_RSP *pSMBr = NULL; | |
2306 | int bytes_returned; | |
2307 | int name_len, name_len2; | |
2308 | __u16 count; | |
2309 | ||
b6b38f70 | 2310 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2311 | winCreateHardLinkRetry: |
2312 | ||
2313 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2314 | (void **) &pSMBr); | |
2315 | if (rc) | |
2316 | return rc; | |
2317 | ||
2318 | pSMB->SearchAttributes = | |
2319 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2320 | ATTR_DIRECTORY); | |
2321 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2322 | pSMB->ClusterCount = 0; | |
2323 | ||
2324 | pSMB->BufferFormat = 0x04; | |
2325 | ||
2326 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2327 | name_len = | |
b1a45695 | 2328 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2329 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2330 | name_len++; /* trailing null */ |
2331 | name_len *= 2; | |
fcc7c09d JL |
2332 | |
2333 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2334 | pSMB->OldFileName[name_len] = 0x04; | |
2335 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2336 | name_len2 = |
50c2f753 | 2337 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2338 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2339 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2340 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2341 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2342 | name_len = strnlen(fromName, PATH_MAX); |
2343 | name_len++; /* trailing null */ | |
2344 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2345 | name_len2 = strnlen(toName, PATH_MAX); | |
2346 | name_len2++; /* trailing null */ | |
2347 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2348 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2349 | name_len2++; /* trailing null */ | |
2350 | name_len2++; /* signature byte */ | |
2351 | } | |
2352 | ||
2353 | count = 1 /* string type byte */ + name_len + name_len2; | |
2354 | pSMB->hdr.smb_buf_length += count; | |
2355 | pSMB->ByteCount = cpu_to_le16(count); | |
2356 | ||
2357 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2358 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2359 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2360 | if (rc) |
b6b38f70 | 2361 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2362 | |
1da177e4 LT |
2363 | cifs_buf_release(pSMB); |
2364 | if (rc == -EAGAIN) | |
2365 | goto winCreateHardLinkRetry; | |
2366 | ||
2367 | return rc; | |
2368 | } | |
2369 | ||
2370 | int | |
2371 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2372 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2373 | const struct nls_table *nls_codepage) |
2374 | { | |
2375 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2376 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2377 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2378 | int rc = 0; | |
2379 | int bytes_returned; | |
2380 | int name_len; | |
2381 | __u16 params, byte_count; | |
460b9696 | 2382 | char *data_start; |
1da177e4 | 2383 | |
b6b38f70 | 2384 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2385 | |
2386 | querySymLinkRetry: | |
2387 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2388 | (void **) &pSMBr); | |
2389 | if (rc) | |
2390 | return rc; | |
2391 | ||
2392 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2393 | name_len = | |
50c2f753 SF |
2394 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2395 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2396 | name_len++; /* trailing null */ |
2397 | name_len *= 2; | |
50c2f753 | 2398 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2399 | name_len = strnlen(searchName, PATH_MAX); |
2400 | name_len++; /* trailing null */ | |
2401 | strncpy(pSMB->FileName, searchName, name_len); | |
2402 | } | |
2403 | ||
2404 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2405 | pSMB->TotalDataCount = 0; | |
2406 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2407 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2408 | pSMB->MaxSetupCount = 0; |
2409 | pSMB->Reserved = 0; | |
2410 | pSMB->Flags = 0; | |
2411 | pSMB->Timeout = 0; | |
2412 | pSMB->Reserved2 = 0; | |
2413 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2414 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2415 | pSMB->DataCount = 0; |
2416 | pSMB->DataOffset = 0; | |
2417 | pSMB->SetupCount = 1; | |
2418 | pSMB->Reserved3 = 0; | |
2419 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2420 | byte_count = params + 1 /* pad */ ; | |
2421 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2422 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2423 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2424 | pSMB->Reserved4 = 0; | |
2425 | pSMB->hdr.smb_buf_length += byte_count; | |
2426 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2427 | ||
2428 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2429 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2430 | if (rc) { | |
b6b38f70 | 2431 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
2432 | } else { |
2433 | /* decode response */ | |
2434 | ||
2435 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2436 | /* BB also check enough total bytes returned */ |
460b9696 JL |
2437 | if (rc || (pSMBr->ByteCount < 2)) |
2438 | rc = -EIO; | |
1da177e4 | 2439 | else { |
0e0d2cf3 | 2440 | bool is_unicode; |
460b9696 JL |
2441 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2442 | ||
2443 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2444 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2445 | |
0e0d2cf3 SF |
2446 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2447 | is_unicode = true; | |
2448 | else | |
2449 | is_unicode = false; | |
2450 | ||
737b758c | 2451 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2452 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2453 | is_unicode, nls_codepage); |
8b6427a2 | 2454 | if (!*symlinkinfo) |
460b9696 | 2455 | rc = -ENOMEM; |
1da177e4 LT |
2456 | } |
2457 | } | |
2458 | cifs_buf_release(pSMB); | |
2459 | if (rc == -EAGAIN) | |
2460 | goto querySymLinkRetry; | |
2461 | return rc; | |
2462 | } | |
2463 | ||
c9489779 | 2464 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
2465 | /* Initialize NT TRANSACT SMB into small smb request buffer. |
2466 | This assumes that all NT TRANSACTS that we init here have | |
2467 | total parm and data under about 400 bytes (to fit in small cifs | |
2468 | buffer size), which is the case so far, it easily fits. NB: | |
2469 | Setup words themselves and ByteCount | |
2470 | MaxSetupCount (size of returned setup area) and | |
2471 | MaxParameterCount (returned parms size) must be set by caller */ | |
50c2f753 | 2472 | static int |
b9c7a2bb | 2473 | smb_init_nttransact(const __u16 sub_command, const int setup_count, |
0a4b92c0 | 2474 | const int parm_len, struct cifsTconInfo *tcon, |
50c2f753 | 2475 | void **ret_buf) |
0a4b92c0 SF |
2476 | { |
2477 | int rc; | |
2478 | __u32 temp_offset; | |
50c2f753 | 2479 | struct smb_com_ntransact_req *pSMB; |
0a4b92c0 SF |
2480 | |
2481 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2482 | (void **)&pSMB); | |
2483 | if (rc) | |
2484 | return rc; | |
2485 | *ret_buf = (void *)pSMB; | |
2486 | pSMB->Reserved = 0; | |
2487 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2488 | pSMB->TotalDataCount = 0; | |
2489 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2490 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2491 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2492 | pSMB->DataCount = pSMB->TotalDataCount; | |
2493 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2494 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2495 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2496 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2497 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2498 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2499 | return 0; | |
2500 | } | |
2501 | ||
2502 | static int | |
50c2f753 | 2503 | validate_ntransact(char *buf, char **ppparm, char **ppdata, |
b9c7a2bb | 2504 | __u32 *pparmlen, __u32 *pdatalen) |
0a4b92c0 | 2505 | { |
50c2f753 | 2506 | char *end_of_smb; |
0a4b92c0 | 2507 | __u32 data_count, data_offset, parm_count, parm_offset; |
50c2f753 | 2508 | struct smb_com_ntransact_rsp *pSMBr; |
0a4b92c0 | 2509 | |
630f3f0c SF |
2510 | *pdatalen = 0; |
2511 | *pparmlen = 0; | |
2512 | ||
790fe579 | 2513 | if (buf == NULL) |
0a4b92c0 SF |
2514 | return -EINVAL; |
2515 | ||
2516 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2517 | ||
2518 | /* ByteCount was converted from little endian in SendReceive */ | |
50c2f753 | 2519 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + |
0a4b92c0 SF |
2520 | (char *)&pSMBr->ByteCount; |
2521 | ||
0a4b92c0 SF |
2522 | data_offset = le32_to_cpu(pSMBr->DataOffset); |
2523 | data_count = le32_to_cpu(pSMBr->DataCount); | |
50c2f753 | 2524 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
0a4b92c0 SF |
2525 | parm_count = le32_to_cpu(pSMBr->ParameterCount); |
2526 | ||
2527 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2528 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2529 | ||
2530 | /* should we also check that parm and data areas do not overlap? */ | |
790fe579 | 2531 | if (*ppparm > end_of_smb) { |
b6b38f70 | 2532 | cFYI(1, "parms start after end of smb"); |
0a4b92c0 | 2533 | return -EINVAL; |
790fe579 | 2534 | } else if (parm_count + *ppparm > end_of_smb) { |
b6b38f70 | 2535 | cFYI(1, "parm end after end of smb"); |
0a4b92c0 | 2536 | return -EINVAL; |
790fe579 | 2537 | } else if (*ppdata > end_of_smb) { |
b6b38f70 | 2538 | cFYI(1, "data starts after end of smb"); |
0a4b92c0 | 2539 | return -EINVAL; |
790fe579 | 2540 | } else if (data_count + *ppdata > end_of_smb) { |
f19159dc | 2541 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", |
50c2f753 | 2542 | *ppdata, data_count, (data_count + *ppdata), |
b6b38f70 | 2543 | end_of_smb, pSMBr); |
0a4b92c0 | 2544 | return -EINVAL; |
790fe579 | 2545 | } else if (parm_count + data_count > pSMBr->ByteCount) { |
b6b38f70 | 2546 | cFYI(1, "parm count and data count larger than SMB"); |
0a4b92c0 SF |
2547 | return -EINVAL; |
2548 | } | |
630f3f0c SF |
2549 | *pdatalen = data_count; |
2550 | *pparmlen = parm_count; | |
0a4b92c0 SF |
2551 | return 0; |
2552 | } | |
2553 | ||
1da177e4 LT |
2554 | int |
2555 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2556 | const unsigned char *searchName, | |
50c2f753 | 2557 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2558 | const struct nls_table *nls_codepage) |
2559 | { | |
2560 | int rc = 0; | |
2561 | int bytes_returned; | |
50c2f753 SF |
2562 | struct smb_com_transaction_ioctl_req *pSMB; |
2563 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 2564 | |
b6b38f70 | 2565 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
2566 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2567 | (void **) &pSMBr); | |
2568 | if (rc) | |
2569 | return rc; | |
2570 | ||
2571 | pSMB->TotalParameterCount = 0 ; | |
2572 | pSMB->TotalDataCount = 0; | |
2573 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2574 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2575 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2576 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2577 | pSMB->MaxSetupCount = 4; |
2578 | pSMB->Reserved = 0; | |
2579 | pSMB->ParameterOffset = 0; | |
2580 | pSMB->DataCount = 0; | |
2581 | pSMB->DataOffset = 0; | |
2582 | pSMB->SetupCount = 4; | |
2583 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2584 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2585 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2586 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2587 | pSMB->IsRootFlag = 0; | |
2588 | pSMB->Fid = fid; /* file handle always le */ | |
2589 | pSMB->ByteCount = 0; | |
2590 | ||
2591 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2592 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2593 | if (rc) { | |
b6b38f70 | 2594 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
2595 | } else { /* decode response */ |
2596 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2597 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
afe48c31 | 2598 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) { |
1da177e4 LT |
2599 | /* BB also check enough total bytes returned */ |
2600 | rc = -EIO; /* bad smb */ | |
afe48c31 SF |
2601 | goto qreparse_out; |
2602 | } | |
2603 | if (data_count && (data_count < 2048)) { | |
2604 | char *end_of_smb = 2 /* sizeof byte count */ + | |
2605 | pSMBr->ByteCount + (char *)&pSMBr->ByteCount; | |
1da177e4 | 2606 | |
afe48c31 | 2607 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2608 | (struct reparse_data *) |
2609 | ((char *)&pSMBr->hdr.Protocol | |
2610 | + data_offset); | |
afe48c31 SF |
2611 | if ((char *)reparse_buf >= end_of_smb) { |
2612 | rc = -EIO; | |
2613 | goto qreparse_out; | |
2614 | } | |
2615 | if ((reparse_buf->LinkNamesBuf + | |
2616 | reparse_buf->TargetNameOffset + | |
2617 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 2618 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
2619 | rc = -EIO; |
2620 | goto qreparse_out; | |
2621 | } | |
50c2f753 | 2622 | |
afe48c31 SF |
2623 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2624 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2625 | (reparse_buf->LinkNamesBuf + |
2626 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2627 | buflen, |
2628 | reparse_buf->TargetNameLen, | |
2629 | nls_codepage, 0); | |
2630 | } else { /* ASCII names */ | |
2631 | strncpy(symlinkinfo, | |
2632 | reparse_buf->LinkNamesBuf + | |
2633 | reparse_buf->TargetNameOffset, | |
2634 | min_t(const int, buflen, | |
2635 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2636 | } |
afe48c31 SF |
2637 | } else { |
2638 | rc = -EIO; | |
b6b38f70 JP |
2639 | cFYI(1, "Invalid return data count on " |
2640 | "get reparse info ioctl"); | |
1da177e4 | 2641 | } |
afe48c31 SF |
2642 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2643 | does not go off the end of the buffer */ | |
b6b38f70 | 2644 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 2645 | } |
989c7e51 | 2646 | |
1da177e4 | 2647 | qreparse_out: |
4a6d87f1 | 2648 | cifs_buf_release(pSMB); |
1da177e4 LT |
2649 | |
2650 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2651 | since file handle passed in no longer valid */ | |
2652 | ||
2653 | return rc; | |
2654 | } | |
afe48c31 | 2655 | #endif /* CIFS_EXPERIMENTAL */ |
1da177e4 LT |
2656 | |
2657 | #ifdef CONFIG_CIFS_POSIX | |
2658 | ||
2659 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2660 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2661 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2662 | { |
2663 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2664 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2665 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2666 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 2667 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
2668 | |
2669 | return; | |
2670 | } | |
2671 | ||
2672 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2673 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2674 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2675 | { |
2676 | int size = 0; | |
2677 | int i; | |
2678 | __u16 count; | |
50c2f753 SF |
2679 | struct cifs_posix_ace *pACE; |
2680 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2681 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2682 | |
2683 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2684 | return -EOPNOTSUPP; | |
2685 | ||
790fe579 | 2686 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2687 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2688 | pACE = &cifs_acl->ace_array[0]; | |
2689 | size = sizeof(struct cifs_posix_acl); | |
2690 | size += sizeof(struct cifs_posix_ace) * count; | |
2691 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2692 | if (size_of_data_area < size) { |
b6b38f70 JP |
2693 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
2694 | size_of_data_area, size); | |
1da177e4 LT |
2695 | return -EINVAL; |
2696 | } | |
790fe579 | 2697 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2698 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2699 | size = sizeof(struct cifs_posix_acl); | |
2700 | size += sizeof(struct cifs_posix_ace) * count; | |
2701 | /* skip past access ACEs to get to default ACEs */ | |
2702 | pACE = &cifs_acl->ace_array[count]; | |
2703 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2704 | size += sizeof(struct cifs_posix_ace) * count; | |
2705 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2706 | if (size_of_data_area < size) |
1da177e4 LT |
2707 | return -EINVAL; |
2708 | } else { | |
2709 | /* illegal type */ | |
2710 | return -EINVAL; | |
2711 | } | |
2712 | ||
2713 | size = posix_acl_xattr_size(count); | |
790fe579 | 2714 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2715 | /* used to query ACL EA size */ |
790fe579 | 2716 | } else if (size > buflen) { |
1da177e4 LT |
2717 | return -ERANGE; |
2718 | } else /* buffer big enough */ { | |
ff7feac9 | 2719 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2720 | for (i = 0; i < count ; i++) { |
2721 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2722 | pACE++; | |
1da177e4 LT |
2723 | } |
2724 | } | |
2725 | return size; | |
2726 | } | |
2727 | ||
50c2f753 SF |
2728 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2729 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2730 | { |
2731 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2732 | ||
ff7feac9 SF |
2733 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2734 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2735 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2736 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2737 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2738 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2739 | } else |
ff7feac9 | 2740 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 2741 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
2742 | return rc; |
2743 | } | |
2744 | ||
2745 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2746 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2747 | const int buflen, const int acl_type) | |
1da177e4 LT |
2748 | { |
2749 | __u16 rc = 0; | |
50c2f753 SF |
2750 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2751 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2752 | int count; |
2753 | int i; | |
2754 | ||
790fe579 | 2755 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2756 | return 0; |
2757 | ||
2758 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 2759 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 2760 | "version of %d", |
b6b38f70 | 2761 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 2762 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
2763 | cFYI(1, "unknown POSIX ACL version %d", |
2764 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
2765 | return 0; |
2766 | } | |
2767 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2768 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2769 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2770 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2771 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2772 | else { |
b6b38f70 | 2773 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
2774 | return 0; |
2775 | } | |
50c2f753 | 2776 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2777 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2778 | &local_acl->a_entries[i]); | |
790fe579 | 2779 | if (rc != 0) { |
1da177e4 LT |
2780 | /* ACE not converted */ |
2781 | break; | |
2782 | } | |
2783 | } | |
790fe579 | 2784 | if (rc == 0) { |
1da177e4 LT |
2785 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2786 | rc += sizeof(struct cifs_posix_acl); | |
2787 | /* BB add check to make sure ACL does not overflow SMB */ | |
2788 | } | |
2789 | return rc; | |
2790 | } | |
2791 | ||
2792 | int | |
2793 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2794 | const unsigned char *searchName, |
2795 | char *acl_inf, const int buflen, const int acl_type, | |
2796 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2797 | { |
2798 | /* SMB_QUERY_POSIX_ACL */ | |
2799 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2800 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2801 | int rc = 0; | |
2802 | int bytes_returned; | |
2803 | int name_len; | |
2804 | __u16 params, byte_count; | |
50c2f753 | 2805 | |
b6b38f70 | 2806 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
2807 | |
2808 | queryAclRetry: | |
2809 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2810 | (void **) &pSMBr); | |
2811 | if (rc) | |
2812 | return rc; | |
50c2f753 | 2813 | |
1da177e4 LT |
2814 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2815 | name_len = | |
50c2f753 | 2816 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2817 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2818 | name_len++; /* trailing null */ |
2819 | name_len *= 2; | |
2820 | pSMB->FileName[name_len] = 0; | |
2821 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2822 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2823 | name_len = strnlen(searchName, PATH_MAX); |
2824 | name_len++; /* trailing null */ | |
2825 | strncpy(pSMB->FileName, searchName, name_len); | |
2826 | } | |
2827 | ||
2828 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2829 | pSMB->TotalDataCount = 0; | |
2830 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2831 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2832 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2833 | pSMB->MaxSetupCount = 0; | |
2834 | pSMB->Reserved = 0; | |
2835 | pSMB->Flags = 0; | |
2836 | pSMB->Timeout = 0; | |
2837 | pSMB->Reserved2 = 0; | |
2838 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2839 | offsetof(struct smb_com_transaction2_qpi_req, |
2840 | InformationLevel) - 4); | |
1da177e4 LT |
2841 | pSMB->DataCount = 0; |
2842 | pSMB->DataOffset = 0; | |
2843 | pSMB->SetupCount = 1; | |
2844 | pSMB->Reserved3 = 0; | |
2845 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2846 | byte_count = params + 1 /* pad */ ; | |
2847 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2848 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2849 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2850 | pSMB->Reserved4 = 0; | |
2851 | pSMB->hdr.smb_buf_length += byte_count; | |
2852 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2853 | ||
2854 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2855 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2856 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 2857 | if (rc) { |
b6b38f70 | 2858 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
2859 | } else { |
2860 | /* decode response */ | |
50c2f753 | 2861 | |
1da177e4 LT |
2862 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2863 | if (rc || (pSMBr->ByteCount < 2)) | |
2864 | /* BB also check enough total bytes returned */ | |
2865 | rc = -EIO; /* bad smb */ | |
2866 | else { | |
2867 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2868 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2869 | rc = cifs_copy_posix_acl(acl_inf, | |
2870 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2871 | buflen, acl_type, count); |
1da177e4 LT |
2872 | } |
2873 | } | |
2874 | cifs_buf_release(pSMB); | |
2875 | if (rc == -EAGAIN) | |
2876 | goto queryAclRetry; | |
2877 | return rc; | |
2878 | } | |
2879 | ||
2880 | int | |
2881 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2882 | const unsigned char *fileName, |
2883 | const char *local_acl, const int buflen, | |
2884 | const int acl_type, | |
2885 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2886 | { |
2887 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2888 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2889 | char *parm_data; | |
2890 | int name_len; | |
2891 | int rc = 0; | |
2892 | int bytes_returned = 0; | |
2893 | __u16 params, byte_count, data_count, param_offset, offset; | |
2894 | ||
b6b38f70 | 2895 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
2896 | setAclRetry: |
2897 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2898 | (void **) &pSMBr); |
1da177e4 LT |
2899 | if (rc) |
2900 | return rc; | |
2901 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2902 | name_len = | |
50c2f753 | 2903 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2904 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2905 | name_len++; /* trailing null */ |
2906 | name_len *= 2; | |
50c2f753 | 2907 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2908 | name_len = strnlen(fileName, PATH_MAX); |
2909 | name_len++; /* trailing null */ | |
2910 | strncpy(pSMB->FileName, fileName, name_len); | |
2911 | } | |
2912 | params = 6 + name_len; | |
2913 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2914 | /* BB find max SMB size from sess */ |
2915 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2916 | pSMB->MaxSetupCount = 0; |
2917 | pSMB->Reserved = 0; | |
2918 | pSMB->Flags = 0; | |
2919 | pSMB->Timeout = 0; | |
2920 | pSMB->Reserved2 = 0; | |
2921 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2922 | InformationLevel) - 4; |
1da177e4 LT |
2923 | offset = param_offset + params; |
2924 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2925 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2926 | ||
2927 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2928 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2929 | |
790fe579 | 2930 | if (data_count == 0) { |
1da177e4 LT |
2931 | rc = -EOPNOTSUPP; |
2932 | goto setACLerrorExit; | |
2933 | } | |
2934 | pSMB->DataOffset = cpu_to_le16(offset); | |
2935 | pSMB->SetupCount = 1; | |
2936 | pSMB->Reserved3 = 0; | |
2937 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2938 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2939 | byte_count = 3 /* pad */ + params + data_count; | |
2940 | pSMB->DataCount = cpu_to_le16(data_count); | |
2941 | pSMB->TotalDataCount = pSMB->DataCount; | |
2942 | pSMB->ParameterCount = cpu_to_le16(params); | |
2943 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2944 | pSMB->Reserved4 = 0; | |
2945 | pSMB->hdr.smb_buf_length += byte_count; | |
2946 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2947 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2948 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2949 | if (rc) |
b6b38f70 | 2950 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
2951 | |
2952 | setACLerrorExit: | |
2953 | cifs_buf_release(pSMB); | |
2954 | if (rc == -EAGAIN) | |
2955 | goto setAclRetry; | |
2956 | return rc; | |
2957 | } | |
2958 | ||
f654bac2 SF |
2959 | /* BB fix tabs in this function FIXME BB */ |
2960 | int | |
2961 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 2962 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 2963 | { |
50c2f753 SF |
2964 | int rc = 0; |
2965 | struct smb_t2_qfi_req *pSMB = NULL; | |
2966 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2967 | int bytes_returned; | |
2968 | __u16 params, byte_count; | |
f654bac2 | 2969 | |
b6b38f70 | 2970 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
2971 | if (tcon == NULL) |
2972 | return -ENODEV; | |
f654bac2 SF |
2973 | |
2974 | GetExtAttrRetry: | |
790fe579 SF |
2975 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2976 | (void **) &pSMBr); | |
2977 | if (rc) | |
2978 | return rc; | |
f654bac2 | 2979 | |
ad7a2926 | 2980 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
2981 | pSMB->t2.TotalDataCount = 0; |
2982 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2983 | /* BB find exact max data count below from sess structure BB */ | |
2984 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2985 | pSMB->t2.MaxSetupCount = 0; | |
2986 | pSMB->t2.Reserved = 0; | |
2987 | pSMB->t2.Flags = 0; | |
2988 | pSMB->t2.Timeout = 0; | |
2989 | pSMB->t2.Reserved2 = 0; | |
2990 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
2991 | Fid) - 4); | |
2992 | pSMB->t2.DataCount = 0; | |
2993 | pSMB->t2.DataOffset = 0; | |
2994 | pSMB->t2.SetupCount = 1; | |
2995 | pSMB->t2.Reserved3 = 0; | |
2996 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
2997 | byte_count = params + 1 /* pad */ ; | |
2998 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
2999 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3000 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3001 | pSMB->Pad = 0; | |
f654bac2 | 3002 | pSMB->Fid = netfid; |
790fe579 SF |
3003 | pSMB->hdr.smb_buf_length += byte_count; |
3004 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
3005 | ||
3006 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3007 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3008 | if (rc) { | |
b6b38f70 | 3009 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3010 | } else { |
3011 | /* decode response */ | |
3012 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3013 | if (rc || (pSMBr->ByteCount < 2)) | |
3014 | /* BB also check enough total bytes returned */ | |
3015 | /* If rc should we check for EOPNOSUPP and | |
3016 | disable the srvino flag? or in caller? */ | |
3017 | rc = -EIO; /* bad smb */ | |
3018 | else { | |
3019 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3020 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3021 | struct file_chattr_info *pfinfo; | |
3022 | /* BB Do we need a cast or hash here ? */ | |
3023 | if (count != 16) { | |
b6b38f70 | 3024 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3025 | rc = -EIO; |
3026 | goto GetExtAttrOut; | |
3027 | } | |
3028 | pfinfo = (struct file_chattr_info *) | |
3029 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3030 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3031 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3032 | } |
3033 | } | |
f654bac2 | 3034 | GetExtAttrOut: |
790fe579 SF |
3035 | cifs_buf_release(pSMB); |
3036 | if (rc == -EAGAIN) | |
3037 | goto GetExtAttrRetry; | |
3038 | return rc; | |
f654bac2 SF |
3039 | } |
3040 | ||
f654bac2 | 3041 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3042 | |
297647c2 | 3043 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
3044 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3045 | int | |
3046 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3047 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3048 | { |
3049 | int rc = 0; | |
3050 | int buf_type = 0; | |
ad7a2926 | 3051 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3052 | struct kvec iov[1]; |
3053 | ||
b6b38f70 | 3054 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3055 | |
630f3f0c SF |
3056 | *pbuflen = 0; |
3057 | *acl_inf = NULL; | |
3058 | ||
b9c7a2bb | 3059 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3060 | 8 /* parm len */, tcon, (void **) &pSMB); |
3061 | if (rc) | |
3062 | return rc; | |
3063 | ||
3064 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3065 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3066 | pSMB->MaxSetupCount = 0; | |
3067 | pSMB->Fid = fid; /* file handle always le */ | |
3068 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3069 | CIFS_ACL_DACL); | |
3070 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3071 | pSMB->hdr.smb_buf_length += 11; | |
3072 | iov[0].iov_base = (char *)pSMB; | |
3073 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3074 | ||
a761ac57 | 3075 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
133672ef | 3076 | CIFS_STD_OP); |
0a4b92c0 SF |
3077 | cifs_stats_inc(&tcon->num_acl_get); |
3078 | if (rc) { | |
b6b38f70 | 3079 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3080 | } else { /* decode response */ |
ad7a2926 | 3081 | __le32 *parm; |
630f3f0c SF |
3082 | __u32 parm_len; |
3083 | __u32 acl_len; | |
50c2f753 | 3084 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3085 | char *pdata; |
0a4b92c0 SF |
3086 | |
3087 | /* validate_nttransact */ | |
50c2f753 | 3088 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3089 | &pdata, &parm_len, pbuflen); |
790fe579 | 3090 | if (rc) |
0a4b92c0 SF |
3091 | goto qsec_out; |
3092 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3093 | ||
b6b38f70 | 3094 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3095 | |
3096 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3097 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3098 | *pbuflen = 0; |
0a4b92c0 SF |
3099 | goto qsec_out; |
3100 | } | |
3101 | ||
3102 | /* BB check that data area is minimum length and as big as acl_len */ | |
3103 | ||
af6f4612 | 3104 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3105 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3106 | cERROR(1, "acl length %d does not match %d", |
3107 | acl_len, *pbuflen); | |
630f3f0c SF |
3108 | if (*pbuflen > acl_len) |
3109 | *pbuflen = acl_len; | |
3110 | } | |
0a4b92c0 | 3111 | |
630f3f0c SF |
3112 | /* check if buffer is big enough for the acl |
3113 | header followed by the smallest SID */ | |
3114 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3115 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3116 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3117 | rc = -EINVAL; |
3118 | *pbuflen = 0; | |
3119 | } else { | |
3120 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3121 | if (*acl_inf == NULL) { | |
3122 | *pbuflen = 0; | |
3123 | rc = -ENOMEM; | |
3124 | } | |
3125 | memcpy(*acl_inf, pdata, *pbuflen); | |
3126 | } | |
0a4b92c0 SF |
3127 | } |
3128 | qsec_out: | |
790fe579 | 3129 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3130 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3131 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3132 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3133 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3134 | return rc; |
3135 | } | |
97837582 SF |
3136 | |
3137 | int | |
3138 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3139 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3140 | { | |
3141 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3142 | int rc = 0; | |
3143 | int bytes_returned = 0; | |
3144 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3145 | NTRANSACT_RSP *pSMBr = NULL; | |
3146 | ||
3147 | setCifsAclRetry: | |
3148 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3149 | (void **) &pSMBr); | |
3150 | if (rc) | |
3151 | return (rc); | |
3152 | ||
3153 | pSMB->MaxSetupCount = 0; | |
3154 | pSMB->Reserved = 0; | |
3155 | ||
3156 | param_count = 8; | |
3157 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3158 | data_count = acllen; | |
3159 | data_offset = param_offset + param_count; | |
3160 | byte_count = 3 /* pad */ + param_count; | |
3161 | ||
3162 | pSMB->DataCount = cpu_to_le32(data_count); | |
3163 | pSMB->TotalDataCount = pSMB->DataCount; | |
3164 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3165 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3166 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3167 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3168 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3169 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3170 | pSMB->SetupCount = 0; | |
3171 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3172 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3173 | ||
3174 | pSMB->Fid = fid; /* file handle always le */ | |
3175 | pSMB->Reserved2 = 0; | |
3176 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3177 | ||
3178 | if (pntsd && acllen) { | |
3179 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3180 | (char *) pntsd, | |
3181 | acllen); | |
3182 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3183 | ||
3184 | } else | |
3185 | pSMB->hdr.smb_buf_length += byte_count; | |
3186 | ||
3187 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3188 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3189 | ||
b6b38f70 | 3190 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3191 | if (rc) |
b6b38f70 | 3192 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3193 | cifs_buf_release(pSMB); |
3194 | ||
3195 | if (rc == -EAGAIN) | |
3196 | goto setCifsAclRetry; | |
3197 | ||
3198 | return (rc); | |
3199 | } | |
3200 | ||
297647c2 | 3201 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
0a4b92c0 | 3202 | |
6b8edfe0 SF |
3203 | /* Legacy Query Path Information call for lookup to old servers such |
3204 | as Win9x/WinME */ | |
3205 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3206 | const unsigned char *searchName, |
3207 | FILE_ALL_INFO *pFinfo, | |
3208 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3209 | { |
ad7a2926 SF |
3210 | QUERY_INFORMATION_REQ *pSMB; |
3211 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3212 | int rc = 0; |
3213 | int bytes_returned; | |
3214 | int name_len; | |
3215 | ||
b6b38f70 | 3216 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3217 | QInfRetry: |
3218 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3219 | (void **) &pSMBr); |
6b8edfe0 SF |
3220 | if (rc) |
3221 | return rc; | |
3222 | ||
3223 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3224 | name_len = | |
50c2f753 SF |
3225 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3226 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3227 | name_len++; /* trailing null */ |
3228 | name_len *= 2; | |
50c2f753 | 3229 | } else { |
6b8edfe0 SF |
3230 | name_len = strnlen(searchName, PATH_MAX); |
3231 | name_len++; /* trailing null */ | |
3232 | strncpy(pSMB->FileName, searchName, name_len); | |
3233 | } | |
3234 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3235 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3236 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3237 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3238 | ||
3239 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3240 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3241 | if (rc) { |
b6b38f70 | 3242 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3243 | } else if (pFinfo) { |
1bd5bbcb SF |
3244 | struct timespec ts; |
3245 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3246 | |
3247 | /* decode response */ | |
1bd5bbcb | 3248 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3249 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3250 | ts.tv_nsec = 0; |
3251 | ts.tv_sec = time; | |
3252 | /* decode time fields */ | |
733f99ac | 3253 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3254 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3255 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3256 | pFinfo->AllocationSize = |
3257 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3258 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3259 | pFinfo->Attributes = | |
3260 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3261 | } else |
3262 | rc = -EIO; /* bad buffer passed in */ | |
3263 | ||
3264 | cifs_buf_release(pSMB); | |
3265 | ||
3266 | if (rc == -EAGAIN) | |
3267 | goto QInfRetry; | |
3268 | ||
3269 | return rc; | |
3270 | } | |
3271 | ||
bcd5357f JL |
3272 | int |
3273 | CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3274 | u16 netfid, FILE_ALL_INFO *pFindData) | |
3275 | { | |
3276 | struct smb_t2_qfi_req *pSMB = NULL; | |
3277 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3278 | int rc = 0; | |
3279 | int bytes_returned; | |
3280 | __u16 params, byte_count; | |
3281 | ||
3282 | QFileInfoRetry: | |
3283 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3284 | (void **) &pSMBr); | |
3285 | if (rc) | |
3286 | return rc; | |
3287 | ||
3288 | params = 2 /* level */ + 2 /* fid */; | |
3289 | pSMB->t2.TotalDataCount = 0; | |
3290 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3291 | /* BB find exact max data count below from sess structure BB */ | |
3292 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3293 | pSMB->t2.MaxSetupCount = 0; | |
3294 | pSMB->t2.Reserved = 0; | |
3295 | pSMB->t2.Flags = 0; | |
3296 | pSMB->t2.Timeout = 0; | |
3297 | pSMB->t2.Reserved2 = 0; | |
3298 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3299 | Fid) - 4); | |
3300 | pSMB->t2.DataCount = 0; | |
3301 | pSMB->t2.DataOffset = 0; | |
3302 | pSMB->t2.SetupCount = 1; | |
3303 | pSMB->t2.Reserved3 = 0; | |
3304 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3305 | byte_count = params + 1 /* pad */ ; | |
3306 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3307 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3308 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3309 | pSMB->Pad = 0; | |
3310 | pSMB->Fid = netfid; | |
3311 | pSMB->hdr.smb_buf_length += byte_count; | |
6b8edfe0 | 3312 | |
bcd5357f JL |
3313 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3314 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3315 | if (rc) { | |
f19159dc | 3316 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3317 | } else { /* decode response */ |
3318 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3319 | |
bcd5357f JL |
3320 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3321 | rc = -EIO; | |
3322 | else if (pSMBr->ByteCount < 40) | |
3323 | rc = -EIO; /* bad smb */ | |
3324 | else if (pFindData) { | |
3325 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3326 | memcpy((char *) pFindData, | |
3327 | (char *) &pSMBr->hdr.Protocol + | |
3328 | data_offset, sizeof(FILE_ALL_INFO)); | |
3329 | } else | |
3330 | rc = -ENOMEM; | |
3331 | } | |
3332 | cifs_buf_release(pSMB); | |
3333 | if (rc == -EAGAIN) | |
3334 | goto QFileInfoRetry; | |
6b8edfe0 | 3335 | |
bcd5357f JL |
3336 | return rc; |
3337 | } | |
6b8edfe0 | 3338 | |
1da177e4 LT |
3339 | int |
3340 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3341 | const unsigned char *searchName, | |
ad7a2926 | 3342 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3343 | int legacy /* old style infolevel */, |
737b758c | 3344 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3345 | { |
3346 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3347 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3348 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3349 | int rc = 0; | |
3350 | int bytes_returned; | |
3351 | int name_len; | |
3352 | __u16 params, byte_count; | |
3353 | ||
b6b38f70 | 3354 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3355 | QPathInfoRetry: |
3356 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3357 | (void **) &pSMBr); | |
3358 | if (rc) | |
3359 | return rc; | |
3360 | ||
3361 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3362 | name_len = | |
50c2f753 | 3363 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3364 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3365 | name_len++; /* trailing null */ |
3366 | name_len *= 2; | |
50c2f753 | 3367 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3368 | name_len = strnlen(searchName, PATH_MAX); |
3369 | name_len++; /* trailing null */ | |
3370 | strncpy(pSMB->FileName, searchName, name_len); | |
3371 | } | |
3372 | ||
50c2f753 | 3373 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3374 | pSMB->TotalDataCount = 0; |
3375 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3376 | /* BB find exact max SMB PDU from sess structure BB */ |
3377 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3378 | pSMB->MaxSetupCount = 0; |
3379 | pSMB->Reserved = 0; | |
3380 | pSMB->Flags = 0; | |
3381 | pSMB->Timeout = 0; | |
3382 | pSMB->Reserved2 = 0; | |
3383 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3384 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3385 | pSMB->DataCount = 0; |
3386 | pSMB->DataOffset = 0; | |
3387 | pSMB->SetupCount = 1; | |
3388 | pSMB->Reserved3 = 0; | |
3389 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3390 | byte_count = params + 1 /* pad */ ; | |
3391 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3392 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3393 | if (legacy) |
acf1a1b1 SF |
3394 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3395 | else | |
3396 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3397 | pSMB->Reserved4 = 0; |
3398 | pSMB->hdr.smb_buf_length += byte_count; | |
3399 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3400 | ||
3401 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3402 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3403 | if (rc) { | |
b6b38f70 | 3404 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3405 | } else { /* decode response */ |
3406 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3407 | ||
acf1a1b1 SF |
3408 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3409 | rc = -EIO; | |
50c2f753 | 3410 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3411 | rc = -EIO; /* bad smb */ |
790fe579 | 3412 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3413 | rc = -EIO; /* 24 or 26 expected but we do not read |
3414 | last field */ | |
3415 | else if (pFindData) { | |
acf1a1b1 | 3416 | int size; |
1da177e4 | 3417 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3418 | |
3419 | /* On legacy responses we do not read the last field, | |
3420 | EAsize, fortunately since it varies by subdialect and | |
3421 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3422 | bytes depending but we don't care here */ | |
3423 | if (legacy) | |
acf1a1b1 SF |
3424 | size = sizeof(FILE_INFO_STANDARD); |
3425 | else | |
3426 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3427 | memcpy((char *) pFindData, |
3428 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3429 | data_offset, size); |
1da177e4 LT |
3430 | } else |
3431 | rc = -ENOMEM; | |
3432 | } | |
3433 | cifs_buf_release(pSMB); | |
3434 | if (rc == -EAGAIN) | |
3435 | goto QPathInfoRetry; | |
3436 | ||
3437 | return rc; | |
3438 | } | |
3439 | ||
c8634fd3 JL |
3440 | int |
3441 | CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3442 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) | |
3443 | { | |
3444 | struct smb_t2_qfi_req *pSMB = NULL; | |
3445 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3446 | int rc = 0; | |
3447 | int bytes_returned; | |
3448 | __u16 params, byte_count; | |
3449 | ||
3450 | UnixQFileInfoRetry: | |
3451 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3452 | (void **) &pSMBr); | |
3453 | if (rc) | |
3454 | return rc; | |
3455 | ||
3456 | params = 2 /* level */ + 2 /* fid */; | |
3457 | pSMB->t2.TotalDataCount = 0; | |
3458 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3459 | /* BB find exact max data count below from sess structure BB */ | |
3460 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3461 | pSMB->t2.MaxSetupCount = 0; | |
3462 | pSMB->t2.Reserved = 0; | |
3463 | pSMB->t2.Flags = 0; | |
3464 | pSMB->t2.Timeout = 0; | |
3465 | pSMB->t2.Reserved2 = 0; | |
3466 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3467 | Fid) - 4); | |
3468 | pSMB->t2.DataCount = 0; | |
3469 | pSMB->t2.DataOffset = 0; | |
3470 | pSMB->t2.SetupCount = 1; | |
3471 | pSMB->t2.Reserved3 = 0; | |
3472 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3473 | byte_count = params + 1 /* pad */ ; | |
3474 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3475 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3476 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3477 | pSMB->Pad = 0; | |
3478 | pSMB->Fid = netfid; | |
3479 | pSMB->hdr.smb_buf_length += byte_count; | |
3480 | ||
3481 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3482 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3483 | if (rc) { | |
f19159dc | 3484 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3485 | } else { /* decode response */ |
3486 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3487 | ||
3488 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
f19159dc | 3489 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3490 | "Unix Extensions can be disabled on mount " |
f19159dc | 3491 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3492 | rc = -EIO; /* bad smb */ |
3493 | } else { | |
3494 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3495 | memcpy((char *) pFindData, | |
3496 | (char *) &pSMBr->hdr.Protocol + | |
3497 | data_offset, | |
3498 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3499 | } | |
3500 | } | |
3501 | ||
3502 | cifs_buf_release(pSMB); | |
3503 | if (rc == -EAGAIN) | |
3504 | goto UnixQFileInfoRetry; | |
3505 | ||
3506 | return rc; | |
3507 | } | |
3508 | ||
1da177e4 LT |
3509 | int |
3510 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3511 | const unsigned char *searchName, | |
582d21e5 | 3512 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3513 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3514 | { |
3515 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3516 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3517 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3518 | int rc = 0; | |
3519 | int bytes_returned = 0; | |
3520 | int name_len; | |
3521 | __u16 params, byte_count; | |
3522 | ||
b6b38f70 | 3523 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3524 | UnixQPathInfoRetry: |
3525 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3526 | (void **) &pSMBr); | |
3527 | if (rc) | |
3528 | return rc; | |
3529 | ||
3530 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3531 | name_len = | |
b1a45695 | 3532 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3533 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3534 | name_len++; /* trailing null */ |
3535 | name_len *= 2; | |
50c2f753 | 3536 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3537 | name_len = strnlen(searchName, PATH_MAX); |
3538 | name_len++; /* trailing null */ | |
3539 | strncpy(pSMB->FileName, searchName, name_len); | |
3540 | } | |
3541 | ||
50c2f753 | 3542 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3543 | pSMB->TotalDataCount = 0; |
3544 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3545 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3546 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3547 | pSMB->MaxSetupCount = 0; |
3548 | pSMB->Reserved = 0; | |
3549 | pSMB->Flags = 0; | |
3550 | pSMB->Timeout = 0; | |
3551 | pSMB->Reserved2 = 0; | |
3552 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3553 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3554 | pSMB->DataCount = 0; |
3555 | pSMB->DataOffset = 0; | |
3556 | pSMB->SetupCount = 1; | |
3557 | pSMB->Reserved3 = 0; | |
3558 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3559 | byte_count = params + 1 /* pad */ ; | |
3560 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3561 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3562 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3563 | pSMB->Reserved4 = 0; | |
3564 | pSMB->hdr.smb_buf_length += byte_count; | |
3565 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3566 | ||
3567 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3568 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3569 | if (rc) { | |
b6b38f70 | 3570 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3571 | } else { /* decode response */ |
3572 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3573 | ||
3574 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
b6b38f70 | 3575 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3576 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3577 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3578 | rc = -EIO; /* bad smb */ |
3579 | } else { | |
3580 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3581 | memcpy((char *) pFindData, | |
3582 | (char *) &pSMBr->hdr.Protocol + | |
3583 | data_offset, | |
630f3f0c | 3584 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3585 | } |
3586 | } | |
3587 | cifs_buf_release(pSMB); | |
3588 | if (rc == -EAGAIN) | |
3589 | goto UnixQPathInfoRetry; | |
3590 | ||
3591 | return rc; | |
3592 | } | |
3593 | ||
1da177e4 LT |
3594 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3595 | int | |
3596 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3597 | const char *searchName, |
1da177e4 | 3598 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3599 | __u16 *pnetfid, |
3600 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3601 | { |
3602 | /* level 257 SMB_ */ | |
3603 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3604 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3605 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3606 | int rc = 0; |
3607 | int bytes_returned = 0; | |
3608 | int name_len; | |
3609 | __u16 params, byte_count; | |
3610 | ||
b6b38f70 | 3611 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3612 | |
3613 | findFirstRetry: | |
3614 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3615 | (void **) &pSMBr); | |
3616 | if (rc) | |
3617 | return rc; | |
3618 | ||
3619 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3620 | name_len = | |
50c2f753 | 3621 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3622 | PATH_MAX, nls_codepage, remap); |
3623 | /* We can not add the asterik earlier in case | |
3624 | it got remapped to 0xF03A as if it were part of the | |
3625 | directory name instead of a wildcard */ | |
1da177e4 | 3626 | name_len *= 2; |
ac67055e | 3627 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3628 | pSMB->FileName[name_len+1] = 0; |
3629 | pSMB->FileName[name_len+2] = '*'; | |
3630 | pSMB->FileName[name_len+3] = 0; | |
3631 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3632 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3633 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3634 | name_len += 2; |
1da177e4 LT |
3635 | } else { /* BB add check for overrun of SMB buf BB */ |
3636 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3637 | /* BB fix here and in unicode clause above ie |
790fe579 | 3638 | if (name_len > buffersize-header) |
1da177e4 LT |
3639 | free buffer exit; BB */ |
3640 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3641 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3642 | pSMB->FileName[name_len+1] = '*'; |
3643 | pSMB->FileName[name_len+2] = 0; | |
3644 | name_len += 3; | |
1da177e4 LT |
3645 | } |
3646 | ||
3647 | params = 12 + name_len /* includes null */ ; | |
3648 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3649 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3650 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3651 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3652 | pSMB->MaxSetupCount = 0; | |
3653 | pSMB->Reserved = 0; | |
3654 | pSMB->Flags = 0; | |
3655 | pSMB->Timeout = 0; | |
3656 | pSMB->Reserved2 = 0; | |
3657 | byte_count = params + 1 /* pad */ ; | |
3658 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3659 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3660 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3661 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3662 | - 4); | |
1da177e4 LT |
3663 | pSMB->DataCount = 0; |
3664 | pSMB->DataOffset = 0; | |
3665 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3666 | pSMB->Reserved3 = 0; | |
3667 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3668 | pSMB->SearchAttributes = | |
3669 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3670 | ATTR_DIRECTORY); | |
50c2f753 SF |
3671 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3672 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3673 | CIFS_SEARCH_RETURN_RESUME); |
3674 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3675 | ||
3676 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3677 | pSMB->SearchStorageType = 0; | |
3678 | pSMB->hdr.smb_buf_length += byte_count; | |
3679 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3680 | ||
3681 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3682 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3683 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3684 | |
88274815 SF |
3685 | if (rc) {/* BB add logic to retry regular search if Unix search |
3686 | rejected unexpectedly by server */ | |
1da177e4 | 3687 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 3688 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 3689 | |
88274815 | 3690 | cifs_buf_release(pSMB); |
1da177e4 LT |
3691 | |
3692 | /* BB eventually could optimize out free and realloc of buf */ | |
3693 | /* for this case */ | |
3694 | if (rc == -EAGAIN) | |
3695 | goto findFirstRetry; | |
3696 | } else { /* decode response */ | |
3697 | /* BB remember to free buffer if error BB */ | |
3698 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3699 | if (rc == 0) { |
b77d753c SF |
3700 | unsigned int lnoff; |
3701 | ||
1da177e4 | 3702 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3703 | psrch_inf->unicode = true; |
1da177e4 | 3704 | else |
4b18f2a9 | 3705 | psrch_inf->unicode = false; |
1da177e4 LT |
3706 | |
3707 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3708 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3709 | psrch_inf->srch_entries_start = |
3710 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3711 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3712 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3713 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3714 | ||
790fe579 | 3715 | if (parms->EndofSearch) |
4b18f2a9 | 3716 | psrch_inf->endOfSearch = true; |
1da177e4 | 3717 | else |
4b18f2a9 | 3718 | psrch_inf->endOfSearch = false; |
1da177e4 | 3719 | |
50c2f753 SF |
3720 | psrch_inf->entries_in_buffer = |
3721 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3722 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3723 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3724 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3725 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3726 | lnoff) { | |
b6b38f70 | 3727 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3728 | psrch_inf->last_entry = NULL; |
3729 | return rc; | |
3730 | } | |
3731 | ||
0752f152 | 3732 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3733 | lnoff; |
3734 | ||
1da177e4 LT |
3735 | *pnetfid = parms->SearchHandle; |
3736 | } else { | |
3737 | cifs_buf_release(pSMB); | |
3738 | } | |
3739 | } | |
3740 | ||
3741 | return rc; | |
3742 | } | |
3743 | ||
3744 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3745 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3746 | { |
3747 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3748 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3749 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3750 | char *response_data; |
3751 | int rc = 0; | |
3752 | int bytes_returned, name_len; | |
3753 | __u16 params, byte_count; | |
3754 | ||
b6b38f70 | 3755 | cFYI(1, "In FindNext"); |
1da177e4 | 3756 | |
4b18f2a9 | 3757 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3758 | return -ENOENT; |
3759 | ||
3760 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3761 | (void **) &pSMBr); | |
3762 | if (rc) | |
3763 | return rc; | |
3764 | ||
50c2f753 | 3765 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3766 | byte_count = 0; |
3767 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3768 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3769 | pSMB->MaxDataCount = | |
50c2f753 SF |
3770 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3771 | 0xFFFFFF00); | |
1da177e4 LT |
3772 | pSMB->MaxSetupCount = 0; |
3773 | pSMB->Reserved = 0; | |
3774 | pSMB->Flags = 0; | |
3775 | pSMB->Timeout = 0; | |
3776 | pSMB->Reserved2 = 0; | |
3777 | pSMB->ParameterOffset = cpu_to_le16( | |
3778 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3779 | pSMB->DataCount = 0; | |
3780 | pSMB->DataOffset = 0; | |
3781 | pSMB->SetupCount = 1; | |
3782 | pSMB->Reserved3 = 0; | |
3783 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3784 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3785 | pSMB->SearchCount = | |
630f3f0c | 3786 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3787 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3788 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3789 | pSMB->SearchFlags = | |
3790 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3791 | ||
3792 | name_len = psrch_inf->resume_name_len; | |
3793 | params += name_len; | |
790fe579 | 3794 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3795 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3796 | byte_count += name_len; | |
ef6724e3 SF |
3797 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3798 | pSMB->ResumeFileName[name_len] = 0; | |
3799 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3800 | } else { |
3801 | rc = -EINVAL; | |
3802 | goto FNext2_err_exit; | |
3803 | } | |
3804 | byte_count = params + 1 /* pad */ ; | |
3805 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3806 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3807 | pSMB->hdr.smb_buf_length += byte_count; | |
3808 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3809 | |
1da177e4 LT |
3810 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3811 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3812 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3813 | if (rc) { |
3814 | if (rc == -EBADF) { | |
4b18f2a9 | 3815 | psrch_inf->endOfSearch = true; |
6353450a | 3816 | cifs_buf_release(pSMB); |
50c2f753 | 3817 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 3818 | } else |
b6b38f70 | 3819 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
3820 | } else { /* decode response */ |
3821 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3822 | |
790fe579 | 3823 | if (rc == 0) { |
b77d753c SF |
3824 | unsigned int lnoff; |
3825 | ||
1da177e4 LT |
3826 | /* BB fixme add lock for file (srch_info) struct here */ |
3827 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3828 | psrch_inf->unicode = true; |
1da177e4 | 3829 | else |
4b18f2a9 | 3830 | psrch_inf->unicode = false; |
1da177e4 LT |
3831 | response_data = (char *) &pSMBr->hdr.Protocol + |
3832 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3833 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3834 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3835 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3836 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3837 | cifs_small_buf_release( |
3838 | psrch_inf->ntwrk_buf_start); | |
3839 | else | |
3840 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3841 | psrch_inf->srch_entries_start = response_data; |
3842 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3843 | psrch_inf->smallBuf = 0; |
790fe579 | 3844 | if (parms->EndofSearch) |
4b18f2a9 | 3845 | psrch_inf->endOfSearch = true; |
1da177e4 | 3846 | else |
4b18f2a9 | 3847 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3848 | psrch_inf->entries_in_buffer = |
3849 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3850 | psrch_inf->index_of_last_entry += |
3851 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3852 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3853 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3854 | lnoff) { | |
b6b38f70 | 3855 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
3856 | psrch_inf->last_entry = NULL; |
3857 | return rc; | |
3858 | } else | |
3859 | psrch_inf->last_entry = | |
3860 | psrch_inf->srch_entries_start + lnoff; | |
3861 | ||
b6b38f70 JP |
3862 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
3863 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
3864 | |
3865 | /* BB fixme add unlock here */ | |
3866 | } | |
3867 | ||
3868 | } | |
3869 | ||
3870 | /* BB On error, should we leave previous search buf (and count and | |
3871 | last entry fields) intact or free the previous one? */ | |
3872 | ||
3873 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3874 | since file handle passed in no longer valid */ | |
3875 | FNext2_err_exit: | |
3876 | if (rc != 0) | |
3877 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3878 | return rc; |
3879 | } | |
3880 | ||
3881 | int | |
50c2f753 SF |
3882 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3883 | const __u16 searchHandle) | |
1da177e4 LT |
3884 | { |
3885 | int rc = 0; | |
3886 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 3887 | |
b6b38f70 | 3888 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
3889 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
3890 | ||
3891 | /* no sense returning error if session restarted | |
3892 | as file handle has been closed */ | |
790fe579 | 3893 | if (rc == -EAGAIN) |
1da177e4 LT |
3894 | return 0; |
3895 | if (rc) | |
3896 | return rc; | |
3897 | ||
1da177e4 LT |
3898 | pSMB->FileID = searchHandle; |
3899 | pSMB->ByteCount = 0; | |
133672ef | 3900 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3901 | if (rc) |
b6b38f70 | 3902 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 3903 | |
a4544347 | 3904 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3905 | |
3906 | /* Since session is dead, search handle closed on server already */ | |
3907 | if (rc == -EAGAIN) | |
3908 | rc = 0; | |
3909 | ||
3910 | return rc; | |
3911 | } | |
3912 | ||
1da177e4 LT |
3913 | int |
3914 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3915 | const unsigned char *searchName, |
ad7a2926 | 3916 | __u64 *inode_number, |
50c2f753 | 3917 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3918 | { |
3919 | int rc = 0; | |
3920 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3921 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3922 | int name_len, bytes_returned; | |
3923 | __u16 params, byte_count; | |
3924 | ||
b6b38f70 | 3925 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 3926 | if (tcon == NULL) |
50c2f753 | 3927 | return -ENODEV; |
1da177e4 LT |
3928 | |
3929 | GetInodeNumberRetry: | |
3930 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3931 | (void **) &pSMBr); |
1da177e4 LT |
3932 | if (rc) |
3933 | return rc; | |
3934 | ||
1da177e4 LT |
3935 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3936 | name_len = | |
b1a45695 | 3937 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 3938 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3939 | name_len++; /* trailing null */ |
3940 | name_len *= 2; | |
50c2f753 | 3941 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3942 | name_len = strnlen(searchName, PATH_MAX); |
3943 | name_len++; /* trailing null */ | |
3944 | strncpy(pSMB->FileName, searchName, name_len); | |
3945 | } | |
3946 | ||
3947 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3948 | pSMB->TotalDataCount = 0; | |
3949 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3950 | /* BB find exact max data count below from sess structure BB */ | |
3951 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3952 | pSMB->MaxSetupCount = 0; | |
3953 | pSMB->Reserved = 0; | |
3954 | pSMB->Flags = 0; | |
3955 | pSMB->Timeout = 0; | |
3956 | pSMB->Reserved2 = 0; | |
3957 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3958 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3959 | pSMB->DataCount = 0; |
3960 | pSMB->DataOffset = 0; | |
3961 | pSMB->SetupCount = 1; | |
3962 | pSMB->Reserved3 = 0; | |
3963 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3964 | byte_count = params + 1 /* pad */ ; | |
3965 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3966 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3967 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3968 | pSMB->Reserved4 = 0; | |
3969 | pSMB->hdr.smb_buf_length += byte_count; | |
3970 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3971 | ||
3972 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3973 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3974 | if (rc) { | |
b6b38f70 | 3975 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
3976 | } else { |
3977 | /* decode response */ | |
3978 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3979 | if (rc || (pSMBr->ByteCount < 2)) | |
3980 | /* BB also check enough total bytes returned */ | |
3981 | /* If rc should we check for EOPNOSUPP and | |
3982 | disable the srvino flag? or in caller? */ | |
3983 | rc = -EIO; /* bad smb */ | |
50c2f753 | 3984 | else { |
1da177e4 LT |
3985 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
3986 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 3987 | struct file_internal_info *pfinfo; |
1da177e4 | 3988 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 3989 | if (count < 8) { |
b6b38f70 | 3990 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
3991 | rc = -EIO; |
3992 | goto GetInodeNumOut; | |
3993 | } | |
3994 | pfinfo = (struct file_internal_info *) | |
3995 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 3996 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
3997 | } |
3998 | } | |
3999 | GetInodeNumOut: | |
4000 | cifs_buf_release(pSMB); | |
4001 | if (rc == -EAGAIN) | |
4002 | goto GetInodeNumberRetry; | |
4003 | return rc; | |
4004 | } | |
1da177e4 | 4005 | |
fec4585f IM |
4006 | /* parses DFS refferal V3 structure |
4007 | * caller is responsible for freeing target_nodes | |
4008 | * returns: | |
4009 | * on success - 0 | |
4010 | * on failure - errno | |
4011 | */ | |
4012 | static int | |
a1fe78f1 | 4013 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4014 | unsigned int *num_of_nodes, |
4015 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4016 | const struct nls_table *nls_codepage, int remap, |
4017 | const char *searchName) | |
fec4585f IM |
4018 | { |
4019 | int i, rc = 0; | |
4020 | char *data_end; | |
4021 | bool is_unicode; | |
4022 | struct dfs_referral_level_3 *ref; | |
4023 | ||
5ca33c6a HH |
4024 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4025 | is_unicode = true; | |
4026 | else | |
4027 | is_unicode = false; | |
fec4585f IM |
4028 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4029 | ||
4030 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4031 | cERROR(1, "num_referrals: must be at least > 0," |
4032 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4033 | rc = -EINVAL; |
a1fe78f1 | 4034 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4035 | } |
4036 | ||
4037 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4038 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4039 | cERROR(1, "Referrals of V%d version are not supported," |
4040 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4041 | rc = -EINVAL; |
a1fe78f1 | 4042 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4043 | } |
4044 | ||
4045 | /* get the upper boundary of the resp buffer */ | |
4046 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4047 | le16_to_cpu(pSMBr->t2.DataCount); | |
4048 | ||
f19159dc | 4049 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4050 | *num_of_nodes, |
b6b38f70 | 4051 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4052 | |
4053 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4054 | *num_of_nodes, GFP_KERNEL); | |
4055 | if (*target_nodes == NULL) { | |
b6b38f70 | 4056 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4057 | rc = -ENOMEM; |
a1fe78f1 | 4058 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4059 | } |
4060 | ||
3ad2f3fb | 4061 | /* collect necessary data from referrals */ |
fec4585f IM |
4062 | for (i = 0; i < *num_of_nodes; i++) { |
4063 | char *temp; | |
4064 | int max_len; | |
4065 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4066 | ||
0e0d2cf3 | 4067 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4068 | if (is_unicode) { |
331c3135 JL |
4069 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4070 | GFP_KERNEL); | |
2920ee2b SF |
4071 | if (tmp == NULL) { |
4072 | rc = -ENOMEM; | |
4073 | goto parse_DFS_referrals_exit; | |
4074 | } | |
2c55608f IM |
4075 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4076 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4077 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4078 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4079 | nls_codepage); |
4080 | kfree(tmp); | |
4081 | } else | |
4082 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4083 | ||
fec4585f IM |
4084 | node->server_type = le16_to_cpu(ref->ServerType); |
4085 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4086 | ||
4087 | /* copy DfsPath */ | |
4088 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4089 | max_len = data_end - temp; | |
d185cda7 SF |
4090 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4091 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4092 | if (!node->path_name) { |
4093 | rc = -ENOMEM; | |
a1fe78f1 | 4094 | goto parse_DFS_referrals_exit; |
066ce689 | 4095 | } |
fec4585f IM |
4096 | |
4097 | /* copy link target UNC */ | |
4098 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4099 | max_len = data_end - temp; | |
d185cda7 SF |
4100 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4101 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4102 | if (!node->node_name) |
4103 | rc = -ENOMEM; | |
fec4585f IM |
4104 | } |
4105 | ||
a1fe78f1 | 4106 | parse_DFS_referrals_exit: |
fec4585f IM |
4107 | if (rc) { |
4108 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4109 | *target_nodes = NULL; | |
4110 | *num_of_nodes = 0; | |
4111 | } | |
4112 | return rc; | |
4113 | } | |
4114 | ||
1da177e4 LT |
4115 | int |
4116 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
4117 | const unsigned char *searchName, | |
c2cf07d5 SF |
4118 | struct dfs_info3_param **target_nodes, |
4119 | unsigned int *num_of_nodes, | |
737b758c | 4120 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4121 | { |
4122 | /* TRANS2_GET_DFS_REFERRAL */ | |
4123 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4124 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4125 | int rc = 0; |
4126 | int bytes_returned; | |
4127 | int name_len; | |
1da177e4 | 4128 | __u16 params, byte_count; |
c2cf07d5 SF |
4129 | *num_of_nodes = 0; |
4130 | *target_nodes = NULL; | |
1da177e4 | 4131 | |
b6b38f70 | 4132 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4133 | if (ses == NULL) |
4134 | return -ENODEV; | |
4135 | getDFSRetry: | |
4136 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4137 | (void **) &pSMBr); | |
4138 | if (rc) | |
4139 | return rc; | |
50c2f753 SF |
4140 | |
4141 | /* server pointer checked in called function, | |
1982c344 SF |
4142 | but should never be null here anyway */ |
4143 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4144 | pSMB->hdr.Tid = ses->ipc_tid; |
4145 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4146 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4147 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4148 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4149 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4150 | |
4151 | if (ses->capabilities & CAP_UNICODE) { | |
4152 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4153 | name_len = | |
b1a45695 | 4154 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4155 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4156 | name_len++; /* trailing null */ |
4157 | name_len *= 2; | |
50c2f753 | 4158 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4159 | name_len = strnlen(searchName, PATH_MAX); |
4160 | name_len++; /* trailing null */ | |
4161 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4162 | } | |
4163 | ||
790fe579 SF |
4164 | if (ses->server) { |
4165 | if (ses->server->secMode & | |
1a4e15a0 SF |
4166 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4167 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4168 | } | |
4169 | ||
50c2f753 | 4170 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4171 | |
1da177e4 LT |
4172 | params = 2 /* level */ + name_len /*includes null */ ; |
4173 | pSMB->TotalDataCount = 0; | |
4174 | pSMB->DataCount = 0; | |
4175 | pSMB->DataOffset = 0; | |
4176 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4177 | /* BB find exact max SMB PDU from sess structure BB */ |
4178 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4179 | pSMB->MaxSetupCount = 0; |
4180 | pSMB->Reserved = 0; | |
4181 | pSMB->Flags = 0; | |
4182 | pSMB->Timeout = 0; | |
4183 | pSMB->Reserved2 = 0; | |
4184 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4185 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4186 | pSMB->SetupCount = 1; |
4187 | pSMB->Reserved3 = 0; | |
4188 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4189 | byte_count = params + 3 /* pad */ ; | |
4190 | pSMB->ParameterCount = cpu_to_le16(params); | |
4191 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4192 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
4193 | pSMB->hdr.smb_buf_length += byte_count; | |
4194 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4195 | ||
4196 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4197 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4198 | if (rc) { | |
b6b38f70 | 4199 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4200 | goto GetDFSRefExit; |
4201 | } | |
4202 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4203 | |
c2cf07d5 | 4204 | /* BB Also check if enough total bytes returned? */ |
fec4585f | 4205 | if (rc || (pSMBr->ByteCount < 17)) { |
c2cf07d5 | 4206 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4207 | goto GetDFSRefExit; |
4208 | } | |
c2cf07d5 | 4209 | |
b6b38f70 | 4210 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
fec4585f | 4211 | pSMBr->ByteCount, |
b6b38f70 | 4212 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4213 | |
fec4585f | 4214 | /* parse returned result into more usable form */ |
a1fe78f1 | 4215 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4216 | target_nodes, nls_codepage, remap, |
4217 | searchName); | |
c2cf07d5 | 4218 | |
1da177e4 | 4219 | GetDFSRefExit: |
0d817bc0 | 4220 | cifs_buf_release(pSMB); |
1da177e4 LT |
4221 | |
4222 | if (rc == -EAGAIN) | |
4223 | goto getDFSRetry; | |
4224 | ||
4225 | return rc; | |
4226 | } | |
4227 | ||
20962438 SF |
4228 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4229 | int | |
4230 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4231 | { | |
4232 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4233 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4234 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4235 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4236 | int rc = 0; | |
4237 | int bytes_returned = 0; | |
4238 | __u16 params, byte_count; | |
4239 | ||
b6b38f70 | 4240 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4241 | oldQFSInfoRetry: |
4242 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4243 | (void **) &pSMBr); | |
4244 | if (rc) | |
4245 | return rc; | |
20962438 SF |
4246 | |
4247 | params = 2; /* level */ | |
4248 | pSMB->TotalDataCount = 0; | |
4249 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4250 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4251 | pSMB->MaxSetupCount = 0; | |
4252 | pSMB->Reserved = 0; | |
4253 | pSMB->Flags = 0; | |
4254 | pSMB->Timeout = 0; | |
4255 | pSMB->Reserved2 = 0; | |
4256 | byte_count = params + 1 /* pad */ ; | |
4257 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4258 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4259 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4260 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4261 | pSMB->DataCount = 0; | |
4262 | pSMB->DataOffset = 0; | |
4263 | pSMB->SetupCount = 1; | |
4264 | pSMB->Reserved3 = 0; | |
4265 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4266 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4267 | pSMB->hdr.smb_buf_length += byte_count; | |
4268 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4269 | ||
4270 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4271 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4272 | if (rc) { | |
b6b38f70 | 4273 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4274 | } else { /* decode response */ |
4275 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4276 | ||
4277 | if (rc || (pSMBr->ByteCount < 18)) | |
4278 | rc = -EIO; /* bad smb */ | |
4279 | else { | |
4280 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 JP |
4281 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
4282 | pSMBr->ByteCount, data_offset); | |
20962438 | 4283 | |
50c2f753 | 4284 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4285 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4286 | FSData->f_bsize = | |
4287 | le16_to_cpu(response_data->BytesPerSector) * | |
4288 | le32_to_cpu(response_data-> | |
4289 | SectorsPerAllocationUnit); | |
4290 | FSData->f_blocks = | |
50c2f753 | 4291 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4292 | FSData->f_bfree = FSData->f_bavail = |
4293 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4294 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4295 | (unsigned long long)FSData->f_blocks, | |
4296 | (unsigned long long)FSData->f_bfree, | |
4297 | FSData->f_bsize); | |
20962438 SF |
4298 | } |
4299 | } | |
4300 | cifs_buf_release(pSMB); | |
4301 | ||
4302 | if (rc == -EAGAIN) | |
4303 | goto oldQFSInfoRetry; | |
4304 | ||
4305 | return rc; | |
4306 | } | |
4307 | ||
1da177e4 | 4308 | int |
737b758c | 4309 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4310 | { |
4311 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4312 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4313 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4314 | FILE_SYSTEM_INFO *response_data; | |
4315 | int rc = 0; | |
4316 | int bytes_returned = 0; | |
4317 | __u16 params, byte_count; | |
4318 | ||
b6b38f70 | 4319 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4320 | QFSInfoRetry: |
4321 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4322 | (void **) &pSMBr); | |
4323 | if (rc) | |
4324 | return rc; | |
4325 | ||
4326 | params = 2; /* level */ | |
4327 | pSMB->TotalDataCount = 0; | |
4328 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4329 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4330 | pSMB->MaxSetupCount = 0; |
4331 | pSMB->Reserved = 0; | |
4332 | pSMB->Flags = 0; | |
4333 | pSMB->Timeout = 0; | |
4334 | pSMB->Reserved2 = 0; | |
4335 | byte_count = params + 1 /* pad */ ; | |
4336 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4337 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4338 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4339 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4340 | pSMB->DataCount = 0; |
4341 | pSMB->DataOffset = 0; | |
4342 | pSMB->SetupCount = 1; | |
4343 | pSMB->Reserved3 = 0; | |
4344 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4345 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4346 | pSMB->hdr.smb_buf_length += byte_count; | |
4347 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4348 | ||
4349 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4350 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4351 | if (rc) { | |
b6b38f70 | 4352 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4353 | } else { /* decode response */ |
50c2f753 | 4354 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4355 | |
20962438 | 4356 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4357 | rc = -EIO; /* bad smb */ |
4358 | else { | |
4359 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4360 | |
4361 | response_data = | |
4362 | (FILE_SYSTEM_INFO | |
4363 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4364 | data_offset); | |
4365 | FSData->f_bsize = | |
4366 | le32_to_cpu(response_data->BytesPerSector) * | |
4367 | le32_to_cpu(response_data-> | |
4368 | SectorsPerAllocationUnit); | |
4369 | FSData->f_blocks = | |
4370 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4371 | FSData->f_bfree = FSData->f_bavail = | |
4372 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4373 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4374 | (unsigned long long)FSData->f_blocks, | |
4375 | (unsigned long long)FSData->f_bfree, | |
4376 | FSData->f_bsize); | |
1da177e4 LT |
4377 | } |
4378 | } | |
4379 | cifs_buf_release(pSMB); | |
4380 | ||
4381 | if (rc == -EAGAIN) | |
4382 | goto QFSInfoRetry; | |
4383 | ||
4384 | return rc; | |
4385 | } | |
4386 | ||
4387 | int | |
737b758c | 4388 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4389 | { |
4390 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4391 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4392 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4393 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4394 | int rc = 0; | |
4395 | int bytes_returned = 0; | |
4396 | __u16 params, byte_count; | |
4397 | ||
b6b38f70 | 4398 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4399 | QFSAttributeRetry: |
4400 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4401 | (void **) &pSMBr); | |
4402 | if (rc) | |
4403 | return rc; | |
4404 | ||
4405 | params = 2; /* level */ | |
4406 | pSMB->TotalDataCount = 0; | |
4407 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4408 | /* BB find exact max SMB PDU from sess structure BB */ |
4409 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4410 | pSMB->MaxSetupCount = 0; |
4411 | pSMB->Reserved = 0; | |
4412 | pSMB->Flags = 0; | |
4413 | pSMB->Timeout = 0; | |
4414 | pSMB->Reserved2 = 0; | |
4415 | byte_count = params + 1 /* pad */ ; | |
4416 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4417 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4418 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4419 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4420 | pSMB->DataCount = 0; |
4421 | pSMB->DataOffset = 0; | |
4422 | pSMB->SetupCount = 1; | |
4423 | pSMB->Reserved3 = 0; | |
4424 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4425 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4426 | pSMB->hdr.smb_buf_length += byte_count; | |
4427 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4428 | ||
4429 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4430 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4431 | if (rc) { | |
b6b38f70 | 4432 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4433 | } else { /* decode response */ |
4434 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4435 | ||
50c2f753 SF |
4436 | if (rc || (pSMBr->ByteCount < 13)) { |
4437 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4438 | rc = -EIO; /* bad smb */ |
4439 | } else { | |
4440 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4441 | response_data = | |
4442 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4443 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4444 | data_offset); | |
4445 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4446 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4447 | } |
4448 | } | |
4449 | cifs_buf_release(pSMB); | |
4450 | ||
4451 | if (rc == -EAGAIN) | |
4452 | goto QFSAttributeRetry; | |
4453 | ||
4454 | return rc; | |
4455 | } | |
4456 | ||
4457 | int | |
737b758c | 4458 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4459 | { |
4460 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4461 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4462 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4463 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4464 | int rc = 0; | |
4465 | int bytes_returned = 0; | |
4466 | __u16 params, byte_count; | |
4467 | ||
b6b38f70 | 4468 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4469 | QFSDeviceRetry: |
4470 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4471 | (void **) &pSMBr); | |
4472 | if (rc) | |
4473 | return rc; | |
4474 | ||
4475 | params = 2; /* level */ | |
4476 | pSMB->TotalDataCount = 0; | |
4477 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4478 | /* BB find exact max SMB PDU from sess structure BB */ |
4479 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4480 | pSMB->MaxSetupCount = 0; |
4481 | pSMB->Reserved = 0; | |
4482 | pSMB->Flags = 0; | |
4483 | pSMB->Timeout = 0; | |
4484 | pSMB->Reserved2 = 0; | |
4485 | byte_count = params + 1 /* pad */ ; | |
4486 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4487 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4488 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4489 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4490 | |
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_DEVICE_INFO); | |
4497 | pSMB->hdr.smb_buf_length += byte_count; | |
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 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4504 | } else { /* decode response */ |
4505 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4506 | ||
630f3f0c | 4507 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) |
1da177e4 LT |
4508 | rc = -EIO; /* bad smb */ |
4509 | else { | |
4510 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4511 | response_data = | |
737b758c SF |
4512 | (FILE_SYSTEM_DEVICE_INFO *) |
4513 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4514 | data_offset); |
4515 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4516 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4517 | } |
4518 | } | |
4519 | cifs_buf_release(pSMB); | |
4520 | ||
4521 | if (rc == -EAGAIN) | |
4522 | goto QFSDeviceRetry; | |
4523 | ||
4524 | return rc; | |
4525 | } | |
4526 | ||
4527 | int | |
737b758c | 4528 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4529 | { |
4530 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4531 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4532 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4533 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4534 | int rc = 0; | |
4535 | int bytes_returned = 0; | |
4536 | __u16 params, byte_count; | |
4537 | ||
b6b38f70 | 4538 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 LT |
4539 | QFSUnixRetry: |
4540 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4541 | (void **) &pSMBr); | |
4542 | if (rc) | |
4543 | return rc; | |
4544 | ||
4545 | params = 2; /* level */ | |
4546 | pSMB->TotalDataCount = 0; | |
4547 | pSMB->DataCount = 0; | |
4548 | pSMB->DataOffset = 0; | |
4549 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4550 | /* BB find exact max SMB PDU from sess structure BB */ |
4551 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4552 | pSMB->MaxSetupCount = 0; |
4553 | pSMB->Reserved = 0; | |
4554 | pSMB->Flags = 0; | |
4555 | pSMB->Timeout = 0; | |
4556 | pSMB->Reserved2 = 0; | |
4557 | byte_count = params + 1 /* pad */ ; | |
4558 | pSMB->ParameterCount = cpu_to_le16(params); | |
4559 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4560 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4561 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4562 | pSMB->SetupCount = 1; |
4563 | pSMB->Reserved3 = 0; | |
4564 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4565 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4566 | pSMB->hdr.smb_buf_length += byte_count; | |
4567 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4568 | ||
4569 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4570 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4571 | if (rc) { | |
b6b38f70 | 4572 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4573 | } else { /* decode response */ |
4574 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4575 | ||
4576 | if (rc || (pSMBr->ByteCount < 13)) { | |
4577 | rc = -EIO; /* bad smb */ | |
4578 | } else { | |
4579 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4580 | response_data = | |
4581 | (FILE_SYSTEM_UNIX_INFO | |
4582 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4583 | data_offset); | |
4584 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4585 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4586 | } |
4587 | } | |
4588 | cifs_buf_release(pSMB); | |
4589 | ||
4590 | if (rc == -EAGAIN) | |
4591 | goto QFSUnixRetry; | |
4592 | ||
4593 | ||
4594 | return rc; | |
4595 | } | |
4596 | ||
ac67055e | 4597 | int |
45abc6ee | 4598 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4599 | { |
4600 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4601 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4602 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4603 | int rc = 0; | |
4604 | int bytes_returned = 0; | |
4605 | __u16 params, param_offset, offset, byte_count; | |
4606 | ||
b6b38f70 | 4607 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4608 | SETFSUnixRetry: |
f26282c9 | 4609 | /* BB switch to small buf init to save memory */ |
ac67055e JA |
4610 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
4611 | (void **) &pSMBr); | |
4612 | if (rc) | |
4613 | return rc; | |
4614 | ||
4615 | params = 4; /* 2 bytes zero followed by info level. */ | |
4616 | pSMB->MaxSetupCount = 0; | |
4617 | pSMB->Reserved = 0; | |
4618 | pSMB->Flags = 0; | |
4619 | pSMB->Timeout = 0; | |
4620 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4621 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4622 | - 4; | |
ac67055e JA |
4623 | offset = param_offset + params; |
4624 | ||
4625 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4626 | /* BB find exact max SMB PDU from sess structure BB */ |
4627 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4628 | pSMB->SetupCount = 1; |
4629 | pSMB->Reserved3 = 0; | |
4630 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4631 | byte_count = 1 /* pad */ + params + 12; | |
4632 | ||
4633 | pSMB->DataCount = cpu_to_le16(12); | |
4634 | pSMB->ParameterCount = cpu_to_le16(params); | |
4635 | pSMB->TotalDataCount = pSMB->DataCount; | |
4636 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4637 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4638 | pSMB->DataOffset = cpu_to_le16(offset); | |
4639 | ||
4640 | /* Params. */ | |
4641 | pSMB->FileNum = 0; | |
4642 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4643 | ||
4644 | /* Data. */ | |
4645 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4646 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4647 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4648 | ||
4649 | pSMB->hdr.smb_buf_length += byte_count; | |
4650 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4651 | ||
4652 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4653 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4654 | if (rc) { | |
b6b38f70 | 4655 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4656 | } else { /* decode response */ |
4657 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4658 | if (rc) |
ac67055e | 4659 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4660 | } |
4661 | cifs_buf_release(pSMB); | |
4662 | ||
4663 | if (rc == -EAGAIN) | |
4664 | goto SETFSUnixRetry; | |
4665 | ||
4666 | return rc; | |
4667 | } | |
4668 | ||
4669 | ||
1da177e4 LT |
4670 | |
4671 | int | |
4672 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4673 | struct kstatfs *FSData) |
1da177e4 LT |
4674 | { |
4675 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4676 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4677 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4678 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4679 | int rc = 0; | |
4680 | int bytes_returned = 0; | |
4681 | __u16 params, byte_count; | |
4682 | ||
b6b38f70 | 4683 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
4684 | QFSPosixRetry: |
4685 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4686 | (void **) &pSMBr); | |
4687 | if (rc) | |
4688 | return rc; | |
4689 | ||
4690 | params = 2; /* level */ | |
4691 | pSMB->TotalDataCount = 0; | |
4692 | pSMB->DataCount = 0; | |
4693 | pSMB->DataOffset = 0; | |
4694 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4695 | /* BB find exact max SMB PDU from sess structure BB */ |
4696 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4697 | pSMB->MaxSetupCount = 0; |
4698 | pSMB->Reserved = 0; | |
4699 | pSMB->Flags = 0; | |
4700 | pSMB->Timeout = 0; | |
4701 | pSMB->Reserved2 = 0; | |
4702 | byte_count = params + 1 /* pad */ ; | |
4703 | pSMB->ParameterCount = cpu_to_le16(params); | |
4704 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4705 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4706 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4707 | pSMB->SetupCount = 1; |
4708 | pSMB->Reserved3 = 0; | |
4709 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4710 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4711 | pSMB->hdr.smb_buf_length += byte_count; | |
4712 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4713 | ||
4714 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4715 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4716 | if (rc) { | |
b6b38f70 | 4717 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4718 | } else { /* decode response */ |
4719 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4720 | ||
4721 | if (rc || (pSMBr->ByteCount < 13)) { | |
4722 | rc = -EIO; /* bad smb */ | |
4723 | } else { | |
4724 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4725 | response_data = | |
4726 | (FILE_SYSTEM_POSIX_INFO | |
4727 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4728 | data_offset); | |
4729 | FSData->f_bsize = | |
4730 | le32_to_cpu(response_data->BlockSize); | |
4731 | FSData->f_blocks = | |
4732 | le64_to_cpu(response_data->TotalBlocks); | |
4733 | FSData->f_bfree = | |
4734 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4735 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4736 | FSData->f_bavail = FSData->f_bfree; |
4737 | } else { | |
4738 | FSData->f_bavail = | |
50c2f753 | 4739 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4740 | } |
790fe579 | 4741 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4742 | FSData->f_files = |
50c2f753 | 4743 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4744 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4745 | FSData->f_ffree = |
50c2f753 | 4746 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4747 | } |
4748 | } | |
4749 | cifs_buf_release(pSMB); | |
4750 | ||
4751 | if (rc == -EAGAIN) | |
4752 | goto QFSPosixRetry; | |
4753 | ||
4754 | return rc; | |
4755 | } | |
4756 | ||
4757 | ||
50c2f753 SF |
4758 | /* We can not use write of zero bytes trick to |
4759 | set file size due to need for large file support. Also note that | |
4760 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4761 | routine which is only needed to work around a sharing violation bug |
4762 | in Samba which this routine can run into */ | |
4763 | ||
4764 | int | |
4765 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4766 | __u64 size, bool SetAllocation, |
737b758c | 4767 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4768 | { |
4769 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4770 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4771 | struct file_end_of_file_info *parm_data; | |
4772 | int name_len; | |
4773 | int rc = 0; | |
4774 | int bytes_returned = 0; | |
4775 | __u16 params, byte_count, data_count, param_offset, offset; | |
4776 | ||
b6b38f70 | 4777 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
4778 | SetEOFRetry: |
4779 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4780 | (void **) &pSMBr); | |
4781 | if (rc) | |
4782 | return rc; | |
4783 | ||
4784 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4785 | name_len = | |
b1a45695 | 4786 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4787 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4788 | name_len++; /* trailing null */ |
4789 | name_len *= 2; | |
3e87d803 | 4790 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4791 | name_len = strnlen(fileName, PATH_MAX); |
4792 | name_len++; /* trailing null */ | |
4793 | strncpy(pSMB->FileName, fileName, name_len); | |
4794 | } | |
4795 | params = 6 + name_len; | |
26f57364 | 4796 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4797 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4798 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4799 | pSMB->MaxSetupCount = 0; |
4800 | pSMB->Reserved = 0; | |
4801 | pSMB->Flags = 0; | |
4802 | pSMB->Timeout = 0; | |
4803 | pSMB->Reserved2 = 0; | |
4804 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4805 | InformationLevel) - 4; |
1da177e4 | 4806 | offset = param_offset + params; |
790fe579 | 4807 | if (SetAllocation) { |
50c2f753 SF |
4808 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4809 | pSMB->InformationLevel = | |
4810 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4811 | else | |
4812 | pSMB->InformationLevel = | |
4813 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4814 | } else /* Set File Size */ { | |
1da177e4 LT |
4815 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4816 | pSMB->InformationLevel = | |
50c2f753 | 4817 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4818 | else |
4819 | pSMB->InformationLevel = | |
50c2f753 | 4820 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4821 | } |
4822 | ||
4823 | parm_data = | |
4824 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4825 | offset); | |
4826 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4827 | pSMB->DataOffset = cpu_to_le16(offset); | |
4828 | pSMB->SetupCount = 1; | |
4829 | pSMB->Reserved3 = 0; | |
4830 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4831 | byte_count = 3 /* pad */ + params + data_count; | |
4832 | pSMB->DataCount = cpu_to_le16(data_count); | |
4833 | pSMB->TotalDataCount = pSMB->DataCount; | |
4834 | pSMB->ParameterCount = cpu_to_le16(params); | |
4835 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4836 | pSMB->Reserved4 = 0; | |
4837 | pSMB->hdr.smb_buf_length += byte_count; | |
4838 | parm_data->FileSize = cpu_to_le64(size); | |
4839 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4840 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4841 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4842 | if (rc) |
b6b38f70 | 4843 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
4844 | |
4845 | cifs_buf_release(pSMB); | |
4846 | ||
4847 | if (rc == -EAGAIN) | |
4848 | goto SetEOFRetry; | |
4849 | ||
4850 | return rc; | |
4851 | } | |
4852 | ||
4853 | int | |
50c2f753 | 4854 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4855 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4856 | { |
4857 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4858 | char *data_offset; |
4859 | struct file_end_of_file_info *parm_data; | |
4860 | int rc = 0; | |
1da177e4 LT |
4861 | __u16 params, param_offset, offset, byte_count, count; |
4862 | ||
b6b38f70 JP |
4863 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
4864 | (long long)size); | |
cd63499c SF |
4865 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4866 | ||
1da177e4 LT |
4867 | if (rc) |
4868 | return rc; | |
4869 | ||
4870 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4871 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4872 | |
1da177e4 LT |
4873 | params = 6; |
4874 | pSMB->MaxSetupCount = 0; | |
4875 | pSMB->Reserved = 0; | |
4876 | pSMB->Flags = 0; | |
4877 | pSMB->Timeout = 0; | |
4878 | pSMB->Reserved2 = 0; | |
4879 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4880 | offset = param_offset + params; | |
4881 | ||
50c2f753 | 4882 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 LT |
4883 | |
4884 | count = sizeof(struct file_end_of_file_info); | |
4885 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4886 | /* BB find exact max SMB PDU from sess structure BB */ |
4887 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4888 | pSMB->SetupCount = 1; |
4889 | pSMB->Reserved3 = 0; | |
4890 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4891 | byte_count = 3 /* pad */ + params + count; | |
4892 | pSMB->DataCount = cpu_to_le16(count); | |
4893 | pSMB->ParameterCount = cpu_to_le16(params); | |
4894 | pSMB->TotalDataCount = pSMB->DataCount; | |
4895 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4896 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4897 | parm_data = | |
50c2f753 SF |
4898 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4899 | + offset); | |
1da177e4 LT |
4900 | pSMB->DataOffset = cpu_to_le16(offset); |
4901 | parm_data->FileSize = cpu_to_le64(size); | |
4902 | pSMB->Fid = fid; | |
790fe579 | 4903 | if (SetAllocation) { |
1da177e4 LT |
4904 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4905 | pSMB->InformationLevel = | |
4906 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4907 | else | |
4908 | pSMB->InformationLevel = | |
4909 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4910 | } else /* Set File Size */ { |
1da177e4 LT |
4911 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4912 | pSMB->InformationLevel = | |
50c2f753 | 4913 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4914 | else |
4915 | pSMB->InformationLevel = | |
50c2f753 | 4916 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4917 | } |
4918 | pSMB->Reserved4 = 0; | |
4919 | pSMB->hdr.smb_buf_length += byte_count; | |
4920 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
133672ef | 4921 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 4922 | if (rc) { |
b6b38f70 | 4923 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
4924 | } |
4925 | ||
50c2f753 | 4926 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4927 | since file handle passed in no longer valid */ |
4928 | ||
4929 | return rc; | |
4930 | } | |
4931 | ||
50c2f753 | 4932 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4933 | an open handle, rather than by pathname - this is awkward due to |
4934 | potential access conflicts on the open, but it is unavoidable for these | |
4935 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4936 | time and resort to the original setpathinfo level which takes the ancient | |
4937 | DOS time format with 2 second granularity */ | |
4938 | int | |
2dd2dfa0 JL |
4939 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
4940 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
4941 | { |
4942 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4943 | char *data_offset; |
4944 | int rc = 0; | |
1da177e4 LT |
4945 | __u16 params, param_offset, offset, byte_count, count; |
4946 | ||
b6b38f70 | 4947 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
4948 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4949 | ||
1da177e4 LT |
4950 | if (rc) |
4951 | return rc; | |
4952 | ||
2dd2dfa0 JL |
4953 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
4954 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4955 | |
1da177e4 LT |
4956 | params = 6; |
4957 | pSMB->MaxSetupCount = 0; | |
4958 | pSMB->Reserved = 0; | |
4959 | pSMB->Flags = 0; | |
4960 | pSMB->Timeout = 0; | |
4961 | pSMB->Reserved2 = 0; | |
4962 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4963 | offset = param_offset + params; | |
4964 | ||
50c2f753 | 4965 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 4966 | |
26f57364 | 4967 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4968 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4969 | /* BB find max SMB PDU from sess */ |
4970 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4971 | pSMB->SetupCount = 1; |
4972 | pSMB->Reserved3 = 0; | |
4973 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4974 | byte_count = 3 /* pad */ + params + count; | |
4975 | pSMB->DataCount = cpu_to_le16(count); | |
4976 | pSMB->ParameterCount = cpu_to_le16(params); | |
4977 | pSMB->TotalDataCount = pSMB->DataCount; | |
4978 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4979 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4980 | pSMB->DataOffset = cpu_to_le16(offset); | |
4981 | pSMB->Fid = fid; | |
4982 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4983 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4984 | else | |
4985 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4986 | pSMB->Reserved4 = 0; | |
4987 | pSMB->hdr.smb_buf_length += byte_count; | |
4988 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 4989 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 4990 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4991 | if (rc) |
b6b38f70 | 4992 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 4993 | |
50c2f753 | 4994 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4995 | since file handle passed in no longer valid */ |
4996 | ||
4997 | return rc; | |
4998 | } | |
4999 | ||
6d22f098 JL |
5000 | int |
5001 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
5002 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
5003 | { | |
5004 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5005 | char *data_offset; | |
5006 | int rc = 0; | |
5007 | __u16 params, param_offset, offset, byte_count, count; | |
5008 | ||
b6b38f70 | 5009 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5010 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5011 | ||
5012 | if (rc) | |
5013 | return rc; | |
5014 | ||
5015 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5016 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5017 | ||
5018 | params = 6; | |
5019 | pSMB->MaxSetupCount = 0; | |
5020 | pSMB->Reserved = 0; | |
5021 | pSMB->Flags = 0; | |
5022 | pSMB->Timeout = 0; | |
5023 | pSMB->Reserved2 = 0; | |
5024 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5025 | offset = param_offset + params; | |
5026 | ||
5027 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5028 | ||
5029 | count = 1; | |
5030 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5031 | /* BB find max SMB PDU from sess */ | |
5032 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5033 | pSMB->SetupCount = 1; | |
5034 | pSMB->Reserved3 = 0; | |
5035 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5036 | byte_count = 3 /* pad */ + params + count; | |
5037 | pSMB->DataCount = cpu_to_le16(count); | |
5038 | pSMB->ParameterCount = cpu_to_le16(params); | |
5039 | pSMB->TotalDataCount = pSMB->DataCount; | |
5040 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5041 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5042 | pSMB->DataOffset = cpu_to_le16(offset); | |
5043 | pSMB->Fid = fid; | |
5044 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5045 | pSMB->Reserved4 = 0; | |
5046 | pSMB->hdr.smb_buf_length += byte_count; | |
5047 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5048 | *data_offset = delete_file ? 1 : 0; | |
5049 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5050 | if (rc) | |
b6b38f70 | 5051 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5052 | |
5053 | return rc; | |
5054 | } | |
1da177e4 LT |
5055 | |
5056 | int | |
6fc000e5 JL |
5057 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
5058 | const char *fileName, const FILE_BASIC_INFO *data, | |
5059 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5060 | { |
5061 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5062 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5063 | int name_len; | |
5064 | int rc = 0; | |
5065 | int bytes_returned = 0; | |
5066 | char *data_offset; | |
5067 | __u16 params, param_offset, offset, byte_count, count; | |
5068 | ||
b6b38f70 | 5069 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5070 | |
5071 | SetTimesRetry: | |
5072 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5073 | (void **) &pSMBr); | |
5074 | if (rc) | |
5075 | return rc; | |
5076 | ||
5077 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5078 | name_len = | |
b1a45695 | 5079 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5080 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5081 | name_len++; /* trailing null */ |
5082 | name_len *= 2; | |
50c2f753 | 5083 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5084 | name_len = strnlen(fileName, PATH_MAX); |
5085 | name_len++; /* trailing null */ | |
5086 | strncpy(pSMB->FileName, fileName, name_len); | |
5087 | } | |
5088 | ||
5089 | params = 6 + name_len; | |
26f57364 | 5090 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5091 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5092 | /* BB find max SMB PDU from sess structure BB */ |
5093 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5094 | pSMB->MaxSetupCount = 0; |
5095 | pSMB->Reserved = 0; | |
5096 | pSMB->Flags = 0; | |
5097 | pSMB->Timeout = 0; | |
5098 | pSMB->Reserved2 = 0; | |
5099 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5100 | InformationLevel) - 4; |
1da177e4 LT |
5101 | offset = param_offset + params; |
5102 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5103 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5104 | pSMB->DataOffset = cpu_to_le16(offset); | |
5105 | pSMB->SetupCount = 1; | |
5106 | pSMB->Reserved3 = 0; | |
5107 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5108 | byte_count = 3 /* pad */ + params + count; | |
5109 | ||
5110 | pSMB->DataCount = cpu_to_le16(count); | |
5111 | pSMB->ParameterCount = cpu_to_le16(params); | |
5112 | pSMB->TotalDataCount = pSMB->DataCount; | |
5113 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5114 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5115 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5116 | else | |
5117 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5118 | pSMB->Reserved4 = 0; | |
5119 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 5120 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5121 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5122 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5123 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5124 | if (rc) |
b6b38f70 | 5125 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5126 | |
5127 | cifs_buf_release(pSMB); | |
5128 | ||
5129 | if (rc == -EAGAIN) | |
5130 | goto SetTimesRetry; | |
5131 | ||
5132 | return rc; | |
5133 | } | |
5134 | ||
5135 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5136 | /* Can be used to set attributes */ | |
5137 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5138 | handling it anyway and NT4 was what we thought it would be needed for | |
5139 | Do not delete it until we prove whether needed for Win9x though */ | |
5140 | int | |
5141 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5142 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5143 | { | |
5144 | SETATTR_REQ *pSMB = NULL; | |
5145 | SETATTR_RSP *pSMBr = NULL; | |
5146 | int rc = 0; | |
5147 | int bytes_returned; | |
5148 | int name_len; | |
5149 | ||
b6b38f70 | 5150 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5151 | |
5152 | SetAttrLgcyRetry: | |
5153 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5154 | (void **) &pSMBr); | |
5155 | if (rc) | |
5156 | return rc; | |
5157 | ||
5158 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5159 | name_len = | |
50c2f753 | 5160 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5161 | PATH_MAX, nls_codepage); |
5162 | name_len++; /* trailing null */ | |
5163 | name_len *= 2; | |
50c2f753 | 5164 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5165 | name_len = strnlen(fileName, PATH_MAX); |
5166 | name_len++; /* trailing null */ | |
5167 | strncpy(pSMB->fileName, fileName, name_len); | |
5168 | } | |
5169 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5170 | pSMB->BufferFormat = 0x04; | |
5171 | pSMB->hdr.smb_buf_length += name_len + 1; | |
5172 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
5173 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5174 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5175 | if (rc) |
b6b38f70 | 5176 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5177 | |
5178 | cifs_buf_release(pSMB); | |
5179 | ||
5180 | if (rc == -EAGAIN) | |
5181 | goto SetAttrLgcyRetry; | |
5182 | ||
5183 | return rc; | |
5184 | } | |
5185 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5186 | ||
654cf14a JL |
5187 | static void |
5188 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5189 | const struct cifs_unix_set_info_args *args) | |
5190 | { | |
5191 | u64 mode = args->mode; | |
5192 | ||
5193 | /* | |
5194 | * Samba server ignores set of file size to zero due to bugs in some | |
5195 | * older clients, but we should be precise - we use SetFileSize to | |
5196 | * set file size and do not want to truncate file size to zero | |
5197 | * accidently as happened on one Samba server beta by putting | |
5198 | * zero instead of -1 here | |
5199 | */ | |
5200 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5201 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5202 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5203 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5204 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5205 | data_offset->Uid = cpu_to_le64(args->uid); | |
5206 | data_offset->Gid = cpu_to_le64(args->gid); | |
5207 | /* better to leave device as zero when it is */ | |
5208 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5209 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5210 | data_offset->Permissions = cpu_to_le64(mode); | |
5211 | ||
5212 | if (S_ISREG(mode)) | |
5213 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5214 | else if (S_ISDIR(mode)) | |
5215 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5216 | else if (S_ISLNK(mode)) | |
5217 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5218 | else if (S_ISCHR(mode)) | |
5219 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5220 | else if (S_ISBLK(mode)) | |
5221 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5222 | else if (S_ISFIFO(mode)) | |
5223 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5224 | else if (S_ISSOCK(mode)) | |
5225 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5226 | } | |
5227 | ||
3bbeeb3c JL |
5228 | int |
5229 | CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon, | |
5230 | const struct cifs_unix_set_info_args *args, | |
5231 | u16 fid, u32 pid_of_opener) | |
5232 | { | |
5233 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5234 | FILE_UNIX_BASIC_INFO *data_offset; | |
5235 | int rc = 0; | |
5236 | u16 params, param_offset, offset, byte_count, count; | |
5237 | ||
b6b38f70 | 5238 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5239 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5240 | ||
5241 | if (rc) | |
5242 | return rc; | |
5243 | ||
5244 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5245 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5246 | ||
5247 | params = 6; | |
5248 | pSMB->MaxSetupCount = 0; | |
5249 | pSMB->Reserved = 0; | |
5250 | pSMB->Flags = 0; | |
5251 | pSMB->Timeout = 0; | |
5252 | pSMB->Reserved2 = 0; | |
5253 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5254 | offset = param_offset + params; | |
5255 | ||
5256 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5257 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5258 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5259 | ||
5260 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5261 | /* BB find max SMB PDU from sess */ | |
5262 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5263 | pSMB->SetupCount = 1; | |
5264 | pSMB->Reserved3 = 0; | |
5265 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5266 | byte_count = 3 /* pad */ + params + count; | |
5267 | pSMB->DataCount = cpu_to_le16(count); | |
5268 | pSMB->ParameterCount = cpu_to_le16(params); | |
5269 | pSMB->TotalDataCount = pSMB->DataCount; | |
5270 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5271 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5272 | pSMB->DataOffset = cpu_to_le16(offset); | |
5273 | pSMB->Fid = fid; | |
5274 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5275 | pSMB->Reserved4 = 0; | |
5276 | pSMB->hdr.smb_buf_length += byte_count; | |
5277 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5278 | ||
5279 | cifs_fill_unix_set_info(data_offset, args); | |
5280 | ||
5281 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5282 | if (rc) | |
b6b38f70 | 5283 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5284 | |
5285 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5286 | since file handle passed in no longer valid */ | |
5287 | ||
5288 | return rc; | |
5289 | } | |
5290 | ||
1da177e4 | 5291 | int |
01ea95e3 JL |
5292 | CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
5293 | const struct cifs_unix_set_info_args *args, | |
5294 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5295 | { |
5296 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5297 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5298 | int name_len; | |
5299 | int rc = 0; | |
5300 | int bytes_returned = 0; | |
5301 | FILE_UNIX_BASIC_INFO *data_offset; | |
5302 | __u16 params, param_offset, offset, count, byte_count; | |
5303 | ||
b6b38f70 | 5304 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5305 | setPermsRetry: |
5306 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5307 | (void **) &pSMBr); | |
5308 | if (rc) | |
5309 | return rc; | |
5310 | ||
5311 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5312 | name_len = | |
50c2f753 | 5313 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5314 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5315 | name_len++; /* trailing null */ |
5316 | name_len *= 2; | |
3e87d803 | 5317 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5318 | name_len = strnlen(fileName, PATH_MAX); |
5319 | name_len++; /* trailing null */ | |
5320 | strncpy(pSMB->FileName, fileName, name_len); | |
5321 | } | |
5322 | ||
5323 | params = 6 + name_len; | |
26f57364 | 5324 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5325 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5326 | /* BB find max SMB PDU from sess structure BB */ |
5327 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5328 | pSMB->MaxSetupCount = 0; |
5329 | pSMB->Reserved = 0; | |
5330 | pSMB->Flags = 0; | |
5331 | pSMB->Timeout = 0; | |
5332 | pSMB->Reserved2 = 0; | |
5333 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5334 | InformationLevel) - 4; |
1da177e4 LT |
5335 | offset = param_offset + params; |
5336 | data_offset = | |
5337 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5338 | offset); | |
5339 | memset(data_offset, 0, count); | |
5340 | pSMB->DataOffset = cpu_to_le16(offset); | |
5341 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5342 | pSMB->SetupCount = 1; | |
5343 | pSMB->Reserved3 = 0; | |
5344 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5345 | byte_count = 3 /* pad */ + params + count; | |
5346 | pSMB->ParameterCount = cpu_to_le16(params); | |
5347 | pSMB->DataCount = cpu_to_le16(count); | |
5348 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5349 | pSMB->TotalDataCount = pSMB->DataCount; | |
5350 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5351 | pSMB->Reserved4 = 0; | |
5352 | pSMB->hdr.smb_buf_length += byte_count; | |
1da177e4 | 5353 | |
654cf14a | 5354 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5355 | |
5356 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5357 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5358 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5359 | if (rc) |
b6b38f70 | 5360 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5361 | |
0d817bc0 | 5362 | cifs_buf_release(pSMB); |
1da177e4 LT |
5363 | if (rc == -EAGAIN) |
5364 | goto setPermsRetry; | |
5365 | return rc; | |
5366 | } | |
5367 | ||
50c2f753 | 5368 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
167a251a | 5369 | const int notify_subdirs, const __u16 netfid, |
50c2f753 | 5370 | __u32 filter, struct file *pfile, int multishot, |
167a251a | 5371 | const struct nls_table *nls_codepage) |
1da177e4 LT |
5372 | { |
5373 | int rc = 0; | |
50c2f753 SF |
5374 | struct smb_com_transaction_change_notify_req *pSMB = NULL; |
5375 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
abb15b8a | 5376 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
5377 | int bytes_returned; |
5378 | ||
b6b38f70 | 5379 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); |
1da177e4 | 5380 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
50c2f753 | 5381 | (void **) &pSMBr); |
1da177e4 LT |
5382 | if (rc) |
5383 | return rc; | |
5384 | ||
5385 | pSMB->TotalParameterCount = 0 ; | |
5386 | pSMB->TotalDataCount = 0; | |
5387 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5388 | /* BB find exact data count max from sess structure BB */ | |
5389 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
5390 | /* BB VERIFY verify which is correct for above BB */ |
5391 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5392 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5393 | ||
1da177e4 LT |
5394 | pSMB->MaxSetupCount = 4; |
5395 | pSMB->Reserved = 0; | |
5396 | pSMB->ParameterOffset = 0; | |
5397 | pSMB->DataCount = 0; | |
5398 | pSMB->DataOffset = 0; | |
5399 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5400 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5401 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 5402 | if (notify_subdirs) |
1da177e4 LT |
5403 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
5404 | pSMB->Reserved2 = 0; | |
5405 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5406 | pSMB->Fid = netfid; /* file handle always le */ | |
5407 | pSMB->ByteCount = 0; | |
5408 | ||
5409 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef SF |
5410 | (struct smb_hdr *)pSMBr, &bytes_returned, |
5411 | CIFS_ASYNC_OP); | |
1da177e4 | 5412 | if (rc) { |
b6b38f70 | 5413 | cFYI(1, "Error in Notify = %d", rc); |
ff5dbd9e SF |
5414 | } else { |
5415 | /* Add file to outstanding requests */ | |
50c2f753 | 5416 | /* BB change to kmem cache alloc */ |
5cbded58 | 5417 | dnotify_req = kmalloc( |
47c786e7 SF |
5418 | sizeof(struct dir_notify_req), |
5419 | GFP_KERNEL); | |
790fe579 | 5420 | if (dnotify_req) { |
47c786e7 SF |
5421 | dnotify_req->Pid = pSMB->hdr.Pid; |
5422 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5423 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5424 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5425 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5426 | dnotify_req->netfid = netfid; | |
5427 | dnotify_req->pfile = pfile; | |
5428 | dnotify_req->filter = filter; | |
5429 | dnotify_req->multishot = multishot; | |
5430 | spin_lock(&GlobalMid_Lock); | |
50c2f753 | 5431 | list_add_tail(&dnotify_req->lhead, |
47c786e7 SF |
5432 | &GlobalDnotifyReqList); |
5433 | spin_unlock(&GlobalMid_Lock); | |
50c2f753 | 5434 | } else |
47c786e7 | 5435 | rc = -ENOMEM; |
1da177e4 LT |
5436 | } |
5437 | cifs_buf_release(pSMB); | |
50c2f753 | 5438 | return rc; |
1da177e4 | 5439 | } |
31c0519f | 5440 | |
1da177e4 | 5441 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5442 | /* |
5443 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5444 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5445 | * it looks for that attribute name and stuffs that value into the EAData | |
5446 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5447 | * buffer. In both cases, the return value is either the length of the | |
5448 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5449 | * the data isn't copied to it, but the length is returned. | |
5450 | */ | |
1da177e4 LT |
5451 | ssize_t |
5452 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
31c0519f JL |
5453 | const unsigned char *searchName, const unsigned char *ea_name, |
5454 | char *EAData, size_t buf_size, | |
5455 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5456 | { |
5457 | /* BB assumes one setup word */ | |
5458 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5459 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5460 | int rc = 0; | |
5461 | int bytes_returned; | |
6e462b9f | 5462 | int list_len; |
f0d3868b | 5463 | struct fealist *ea_response_data; |
50c2f753 SF |
5464 | struct fea *temp_fea; |
5465 | char *temp_ptr; | |
0cd126b5 | 5466 | char *end_of_smb; |
f0d3868b | 5467 | __u16 params, byte_count, data_offset; |
1da177e4 | 5468 | |
b6b38f70 | 5469 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5470 | QAllEAsRetry: |
5471 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5472 | (void **) &pSMBr); | |
5473 | if (rc) | |
5474 | return rc; | |
5475 | ||
5476 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5477 | list_len = |
50c2f753 | 5478 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5479 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5480 | list_len++; /* trailing null */ |
5481 | list_len *= 2; | |
1da177e4 | 5482 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5483 | list_len = strnlen(searchName, PATH_MAX); |
5484 | list_len++; /* trailing null */ | |
5485 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5486 | } |
5487 | ||
6e462b9f | 5488 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5489 | pSMB->TotalDataCount = 0; |
5490 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5491 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5492 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5493 | pSMB->MaxSetupCount = 0; |
5494 | pSMB->Reserved = 0; | |
5495 | pSMB->Flags = 0; | |
5496 | pSMB->Timeout = 0; | |
5497 | pSMB->Reserved2 = 0; | |
5498 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5499 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5500 | pSMB->DataCount = 0; |
5501 | pSMB->DataOffset = 0; | |
5502 | pSMB->SetupCount = 1; | |
5503 | pSMB->Reserved3 = 0; | |
5504 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5505 | byte_count = params + 1 /* pad */ ; | |
5506 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5507 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5508 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5509 | pSMB->Reserved4 = 0; | |
5510 | pSMB->hdr.smb_buf_length += byte_count; | |
5511 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5512 | ||
5513 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5514 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5515 | if (rc) { | |
b6b38f70 | 5516 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5517 | goto QAllEAsOut; |
5518 | } | |
1da177e4 | 5519 | |
f0d3868b JL |
5520 | |
5521 | /* BB also check enough total bytes returned */ | |
5522 | /* BB we need to improve the validity checking | |
5523 | of these trans2 responses */ | |
5524 | ||
5525 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5526 | if (rc || (pSMBr->ByteCount < 4)) { | |
5527 | rc = -EIO; /* bad smb */ | |
5528 | goto QAllEAsOut; | |
5529 | } | |
5530 | ||
5531 | /* check that length of list is not more than bcc */ | |
5532 | /* check that each entry does not go beyond length | |
5533 | of list */ | |
5534 | /* check that each element of each entry does not | |
5535 | go beyond end of list */ | |
5536 | /* validate_trans2_offsets() */ | |
5537 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5538 | ||
5539 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5540 | ea_response_data = (struct fealist *) | |
5541 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5542 | ||
6e462b9f | 5543 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5544 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5545 | if (list_len <= 8) { |
b6b38f70 | 5546 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5547 | goto QAllEAsOut; |
5548 | } | |
5549 | ||
0cd126b5 JL |
5550 | /* make sure list_len doesn't go past end of SMB */ |
5551 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + BCC(&pSMBr->hdr); | |
5552 | if ((char *)ea_response_data + list_len > end_of_smb) { | |
b6b38f70 | 5553 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5554 | rc = -EIO; |
5555 | goto QAllEAsOut; | |
5556 | } | |
5557 | ||
f0d3868b | 5558 | /* account for ea list len */ |
6e462b9f | 5559 | list_len -= 4; |
f0d3868b JL |
5560 | temp_fea = ea_response_data->list; |
5561 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5562 | while (list_len > 0) { |
122ca007 | 5563 | unsigned int name_len; |
f0d3868b | 5564 | __u16 value_len; |
0cd126b5 | 5565 | |
6e462b9f | 5566 | list_len -= 4; |
f0d3868b | 5567 | temp_ptr += 4; |
0cd126b5 JL |
5568 | /* make sure we can read name_len and value_len */ |
5569 | if (list_len < 0) { | |
b6b38f70 | 5570 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5571 | rc = -EIO; |
5572 | goto QAllEAsOut; | |
5573 | } | |
5574 | ||
5575 | name_len = temp_fea->name_len; | |
5576 | value_len = le16_to_cpu(temp_fea->value_len); | |
5577 | list_len -= name_len + 1 + value_len; | |
5578 | if (list_len < 0) { | |
b6b38f70 | 5579 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5580 | rc = -EIO; |
5581 | goto QAllEAsOut; | |
5582 | } | |
5583 | ||
31c0519f JL |
5584 | if (ea_name) { |
5585 | if (strncmp(ea_name, temp_ptr, name_len) == 0) { | |
5586 | temp_ptr += name_len + 1; | |
5587 | rc = value_len; | |
5588 | if (buf_size == 0) | |
5589 | goto QAllEAsOut; | |
5590 | if ((size_t)value_len > buf_size) { | |
5591 | rc = -ERANGE; | |
5592 | goto QAllEAsOut; | |
5593 | } | |
5594 | memcpy(EAData, temp_ptr, value_len); | |
5595 | goto QAllEAsOut; | |
5596 | } | |
f0d3868b | 5597 | } else { |
31c0519f JL |
5598 | /* account for prefix user. and trailing null */ |
5599 | rc += (5 + 1 + name_len); | |
5600 | if (rc < (int) buf_size) { | |
5601 | memcpy(EAData, "user.", 5); | |
5602 | EAData += 5; | |
5603 | memcpy(EAData, temp_ptr, name_len); | |
5604 | EAData += name_len; | |
5605 | /* null terminate name */ | |
5606 | *EAData = 0; | |
5607 | ++EAData; | |
5608 | } else if (buf_size == 0) { | |
5609 | /* skip copy - calc size only */ | |
5610 | } else { | |
5611 | /* stop before overrun buffer */ | |
5612 | rc = -ERANGE; | |
5613 | break; | |
5614 | } | |
1da177e4 | 5615 | } |
0cd126b5 | 5616 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5617 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5618 | } |
f0d3868b | 5619 | |
31c0519f JL |
5620 | /* didn't find the named attribute */ |
5621 | if (ea_name) | |
5622 | rc = -ENODATA; | |
5623 | ||
f0d3868b | 5624 | QAllEAsOut: |
0d817bc0 | 5625 | cifs_buf_release(pSMB); |
1da177e4 LT |
5626 | if (rc == -EAGAIN) |
5627 | goto QAllEAsRetry; | |
5628 | ||
5629 | return (ssize_t)rc; | |
5630 | } | |
5631 | ||
1da177e4 LT |
5632 | int |
5633 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5634 | const char *ea_name, const void *ea_value, |
5635 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5636 | int remap) | |
1da177e4 LT |
5637 | { |
5638 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5639 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5640 | struct fealist *parm_data; | |
5641 | int name_len; | |
5642 | int rc = 0; | |
5643 | int bytes_returned = 0; | |
5644 | __u16 params, param_offset, byte_count, offset, count; | |
5645 | ||
b6b38f70 | 5646 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5647 | SetEARetry: |
5648 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5649 | (void **) &pSMBr); | |
5650 | if (rc) | |
5651 | return rc; | |
5652 | ||
5653 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5654 | name_len = | |
50c2f753 | 5655 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5656 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5657 | name_len++; /* trailing null */ |
5658 | name_len *= 2; | |
50c2f753 | 5659 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5660 | name_len = strnlen(fileName, PATH_MAX); |
5661 | name_len++; /* trailing null */ | |
5662 | strncpy(pSMB->FileName, fileName, name_len); | |
5663 | } | |
5664 | ||
5665 | params = 6 + name_len; | |
5666 | ||
5667 | /* done calculating parms using name_len of file name, | |
5668 | now use name_len to calculate length of ea name | |
5669 | we are going to create in the inode xattrs */ | |
790fe579 | 5670 | if (ea_name == NULL) |
1da177e4 LT |
5671 | name_len = 0; |
5672 | else | |
50c2f753 | 5673 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5674 | |
dae5dbdb | 5675 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5676 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5677 | /* BB find max SMB PDU from sess */ |
5678 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5679 | pSMB->MaxSetupCount = 0; |
5680 | pSMB->Reserved = 0; | |
5681 | pSMB->Flags = 0; | |
5682 | pSMB->Timeout = 0; | |
5683 | pSMB->Reserved2 = 0; | |
5684 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5685 | InformationLevel) - 4; |
1da177e4 LT |
5686 | offset = param_offset + params; |
5687 | pSMB->InformationLevel = | |
5688 | cpu_to_le16(SMB_SET_FILE_EA); | |
5689 | ||
5690 | parm_data = | |
5691 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5692 | offset); | |
5693 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5694 | pSMB->DataOffset = cpu_to_le16(offset); | |
5695 | pSMB->SetupCount = 1; | |
5696 | pSMB->Reserved3 = 0; | |
5697 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5698 | byte_count = 3 /* pad */ + params + count; | |
5699 | pSMB->DataCount = cpu_to_le16(count); | |
5700 | parm_data->list_len = cpu_to_le32(count); | |
5701 | parm_data->list[0].EA_flags = 0; | |
5702 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5703 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5704 | /* EA names are always ASCII */ |
790fe579 | 5705 | if (ea_name) |
50c2f753 | 5706 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5707 | parm_data->list[0].name[name_len] = 0; |
5708 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5709 | /* caller ensures that ea_value_len is less than 64K but | |
5710 | we need to ensure that it fits within the smb */ | |
5711 | ||
50c2f753 SF |
5712 | /*BB add length check to see if it would fit in |
5713 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5714 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5715 | if (ea_value_len) | |
50c2f753 SF |
5716 | memcpy(parm_data->list[0].name+name_len+1, |
5717 | ea_value, ea_value_len); | |
1da177e4 LT |
5718 | |
5719 | pSMB->TotalDataCount = pSMB->DataCount; | |
5720 | pSMB->ParameterCount = cpu_to_le16(params); | |
5721 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5722 | pSMB->Reserved4 = 0; | |
5723 | pSMB->hdr.smb_buf_length += byte_count; | |
5724 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5725 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5726 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5727 | if (rc) |
b6b38f70 | 5728 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5729 | |
5730 | cifs_buf_release(pSMB); | |
5731 | ||
5732 | if (rc == -EAGAIN) | |
5733 | goto SetEARetry; | |
5734 | ||
5735 | return rc; | |
5736 | } | |
5737 | ||
5738 | #endif |