Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
d185cda7 | 4 | * Copyright (C) International Business Machines Corp., 2002,2009 |
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) { | |
133 | cFYI(1, ("can not send cmd %d while umounting", | |
134 | smb_command)); | |
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) { | |
160 | cFYI(1, ("gave up waiting on reconnect in smb_init")); | |
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); |
9162ab20 JL |
175 | if (ses->need_reconnect) |
176 | rc = cifs_setup_session(0, ses, nls_codepage); | |
177 | ||
178 | /* do we need to reconnect tcon? */ | |
179 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 180 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
181 | goto out; |
182 | } | |
183 | ||
184 | mark_open_files_invalid(tcon); | |
185 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 186 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
187 | cFYI(1, ("reconnect tcon rc = %d", rc)); |
188 | ||
189 | if (rc) | |
190 | goto out; | |
191 | ||
192 | /* | |
193 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
194 | * size shrinking | |
195 | */ | |
196 | atomic_inc(&tconInfoReconnectCount); | |
197 | ||
198 | /* tell server Unix caps we support */ | |
199 | if (ses->capabilities & CAP_UNIX) | |
200 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
201 | ||
202 | /* | |
203 | * Removed call to reopen open files here. It is safer (and faster) to | |
204 | * reopen files one at a time as needed in read and write. | |
205 | * | |
206 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
207 | */ | |
208 | ||
209 | out: | |
210 | /* | |
211 | * Check if handle based operation so we know whether we can continue | |
212 | * or not without returning to caller to reset file handle | |
213 | */ | |
214 | switch (smb_command) { | |
215 | case SMB_COM_READ_ANDX: | |
216 | case SMB_COM_WRITE_ANDX: | |
217 | case SMB_COM_CLOSE: | |
218 | case SMB_COM_FIND_CLOSE2: | |
219 | case SMB_COM_LOCKING_ANDX: | |
220 | rc = -EAGAIN; | |
221 | } | |
222 | ||
223 | unload_nls(nls_codepage); | |
224 | return rc; | |
225 | } | |
226 | ||
ad7a2926 SF |
227 | /* Allocate and return pointer to an SMB request buffer, and set basic |
228 | SMB information in the SMB header. If the return code is zero, this | |
229 | function must have filled in request_buf pointer */ | |
1da177e4 LT |
230 | static int |
231 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
ad7a2926 | 232 | void **request_buf) |
1da177e4 LT |
233 | { |
234 | int rc = 0; | |
235 | ||
9162ab20 | 236 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 237 | if (rc) |
1da177e4 LT |
238 | return rc; |
239 | ||
240 | *request_buf = cifs_small_buf_get(); | |
241 | if (*request_buf == NULL) { | |
242 | /* BB should we add a retry in here if not a writepage? */ | |
243 | return -ENOMEM; | |
244 | } | |
245 | ||
63135e08 | 246 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 247 | tcon, wct); |
1da177e4 | 248 | |
790fe579 SF |
249 | if (tcon != NULL) |
250 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 251 | |
1da177e4 | 252 | return rc; |
5815449d SF |
253 | } |
254 | ||
12b3b8ff | 255 | int |
50c2f753 | 256 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 257 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
258 | { |
259 | int rc; | |
50c2f753 | 260 | struct smb_hdr *buffer; |
12b3b8ff | 261 | |
5815449d | 262 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 263 | if (rc) |
12b3b8ff SF |
264 | return rc; |
265 | ||
04fdabe1 | 266 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
267 | buffer->Mid = GetNextMid(ses->server); |
268 | if (ses->capabilities & CAP_UNICODE) | |
269 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 270 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
271 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
272 | ||
273 | /* uid, tid can stay at zero as set in header assemble */ | |
274 | ||
50c2f753 | 275 | /* BB add support for turning on the signing when |
12b3b8ff SF |
276 | this function is used after 1st of session setup requests */ |
277 | ||
278 | return rc; | |
279 | } | |
1da177e4 LT |
280 | |
281 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
282 | static int | |
283 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
284 | void **request_buf /* returned */ , | |
285 | void **response_buf /* returned */ ) | |
286 | { | |
287 | int rc = 0; | |
288 | ||
9162ab20 | 289 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 290 | if (rc) |
1da177e4 LT |
291 | return rc; |
292 | ||
293 | *request_buf = cifs_buf_get(); | |
294 | if (*request_buf == NULL) { | |
295 | /* BB should we add a retry in here if not a writepage? */ | |
296 | return -ENOMEM; | |
297 | } | |
298 | /* Although the original thought was we needed the response buf for */ | |
299 | /* potential retries of smb operations it turns out we can determine */ | |
300 | /* from the mid flags when the request buffer can be resent without */ | |
301 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 302 | if (response_buf) |
50c2f753 | 303 | *response_buf = *request_buf; |
1da177e4 LT |
304 | |
305 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 306 | wct); |
1da177e4 | 307 | |
790fe579 SF |
308 | if (tcon != NULL) |
309 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 310 | |
1da177e4 LT |
311 | return rc; |
312 | } | |
313 | ||
50c2f753 | 314 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 LT |
315 | { |
316 | int rc = -EINVAL; | |
317 | int total_size; | |
50c2f753 | 318 | char *pBCC; |
1da177e4 LT |
319 | |
320 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
321 | /* check for parm and data offset going beyond end of smb */ | |
790fe579 SF |
322 | if (pSMB->hdr.WordCount >= 10) { |
323 | if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
1da177e4 LT |
324 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { |
325 | /* check that bcc is at least as big as parms + data */ | |
326 | /* check that bcc is less than negotiated smb buffer */ | |
327 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
790fe579 | 328 | if (total_size < 512) { |
c18c842b | 329 | total_size += |
63135e08 | 330 | le16_to_cpu(pSMB->t2_rsp.DataCount); |
1da177e4 | 331 | /* BCC le converted in SendReceive */ |
50c2f753 | 332 | pBCC = (pSMB->hdr.WordCount * 2) + |
09d1db5c | 333 | sizeof(struct smb_hdr) + |
1da177e4 | 334 | (char *)pSMB; |
790fe579 | 335 | if ((total_size <= (*(u16 *)pBCC)) && |
50c2f753 | 336 | (total_size < |
1da177e4 LT |
337 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { |
338 | return 0; | |
339 | } | |
1da177e4 LT |
340 | } |
341 | } | |
342 | } | |
50c2f753 | 343 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 LT |
344 | sizeof(struct smb_t2_rsp) + 16); |
345 | return rc; | |
346 | } | |
347 | int | |
348 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
349 | { | |
350 | NEGOTIATE_REQ *pSMB; | |
351 | NEGOTIATE_RSP *pSMBr; | |
352 | int rc = 0; | |
353 | int bytes_returned; | |
3979877e | 354 | int i; |
50c2f753 | 355 | struct TCP_Server_Info *server; |
1da177e4 | 356 | u16 count; |
750d1151 | 357 | unsigned int secFlags; |
733f99ac | 358 | u16 dialect; |
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 SF |
374 | else /* if override flags set only sign/seal OR them with global auth */ |
375 | secFlags = extended_security | ses->overrideSecFlg; | |
376 | ||
762e5ab7 | 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 SF |
384 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
385 | cFYI(1, ("Kerberos only mechanism, enable extended security")); | |
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) { | |
392 | cFYI(1, ("NTLMSSP only mechanism, enable extended security")); | |
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 | ||
733f99ac | 411 | dialect = le16_to_cpu(pSMBr->DialectIndex); |
790fe579 | 412 | cFYI(1, ("Dialect: %d", dialect)); |
254e55ed | 413 | /* Check wct = 1 error case */ |
790fe579 | 414 | if ((pSMBr->hdr.WordCount < 13) || (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) |
733f99ac AV |
422 | && ((dialect == LANMAN_PROT) |
423 | || (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 { | |
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); | |
50c2f753 SF |
465 | cFYI(1, ("SrvTime %d sec since 1970 (utc: %d) diff: %d", |
466 | (int)ts.tv_sec, (int)utc.tv_sec, | |
25ee4a98 | 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 | } |
790fe579 | 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 | |
790fe579 | 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) { |
50c2f753 | 502 | cERROR(1, ("mount failed, cifs module not built " |
254e55ed | 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 SF |
514 | if ((server->secMode & SECMODE_USER) == 0) |
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 */ |
50c2f753 | 521 | cERROR(1, ("Server requests plain text password" |
254e55ed | 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; | |
542 | cERROR(1, ("Invalid security type")); | |
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); |
90c81e0b | 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) { | |
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. | |
600 | SecurityBlob, | |
601 | count - 16, | |
602 | &server->secType); | |
ef571cad | 603 | if (rc == 1) |
e545937a | 604 | rc = 0; |
ef571cad | 605 | else |
254e55ed | 606 | rc = -EINVAL; |
1da177e4 | 607 | } |
254e55ed SF |
608 | } else |
609 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
610 | ||
6344a423 | 611 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 612 | signing_check: |
6344a423 | 613 | #endif |
762e5ab7 SF |
614 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
615 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
616 | so if this is zero it means that signing is disabled */ | |
617 | cFYI(1, ("Signing disabled")); | |
abb63d6c | 618 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
762e5ab7 | 619 | cERROR(1, ("Server requires " |
7111d214 JL |
620 | "packet signing to be enabled in " |
621 | "/proc/fs/cifs/SecurityFlags.")); | |
abb63d6c SF |
622 | rc = -EOPNOTSUPP; |
623 | } | |
50c2f753 | 624 | server->secMode &= |
254e55ed | 625 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
626 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
627 | /* signing required */ | |
38c10a1d | 628 | cFYI(1, ("Must sign - secFlags 0x%x", secFlags)); |
762e5ab7 SF |
629 | if ((server->secMode & |
630 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
631 | cERROR(1, | |
632 | ("signing required but server lacks support")); | |
38c10a1d | 633 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
634 | } else |
635 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
636 | } else { | |
637 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 638 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 639 | server->secMode &= |
254e55ed | 640 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 641 | } |
50c2f753 SF |
642 | |
643 | neg_err_exit: | |
4a6d87f1 | 644 | cifs_buf_release(pSMB); |
254e55ed | 645 | |
790fe579 | 646 | cFYI(1, ("negprot rc %d", rc)); |
1da177e4 LT |
647 | return rc; |
648 | } | |
649 | ||
650 | int | |
651 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
652 | { | |
653 | struct smb_hdr *smb_buffer; | |
1da177e4 | 654 | int rc = 0; |
1da177e4 LT |
655 | |
656 | cFYI(1, ("In tree disconnect")); | |
1da177e4 | 657 | |
f1987b44 JL |
658 | /* BB: do we need to check this? These should never be NULL. */ |
659 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
660 | return -EIO; | |
1da177e4 | 661 | |
f1987b44 JL |
662 | /* |
663 | * No need to return error on this operation if tid invalidated and | |
664 | * closed on server already e.g. due to tcp session crashing. Also, | |
665 | * the tcon is no longer on the list, so no need to take lock before | |
666 | * checking this. | |
667 | */ | |
268875b9 | 668 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 669 | return 0; |
1da177e4 | 670 | |
50c2f753 | 671 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 672 | (void **)&smb_buffer); |
f1987b44 | 673 | if (rc) |
1da177e4 | 674 | return rc; |
133672ef SF |
675 | |
676 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 677 | if (rc) |
966ca923 | 678 | cFYI(1, ("Tree disconnect failed %d", rc)); |
1da177e4 | 679 | |
50c2f753 | 680 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 681 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
682 | if (rc == -EAGAIN) |
683 | rc = 0; | |
684 | ||
685 | return rc; | |
686 | } | |
687 | ||
688 | int | |
689 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
690 | { | |
1da177e4 LT |
691 | LOGOFF_ANDX_REQ *pSMB; |
692 | int rc = 0; | |
1da177e4 LT |
693 | |
694 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
3b795210 | 695 | |
14fbf50d JL |
696 | /* |
697 | * BB: do we need to check validity of ses and server? They should | |
698 | * always be valid since we have an active reference. If not, that | |
699 | * should probably be a BUG() | |
700 | */ | |
701 | if (!ses || !ses->server) | |
3b795210 SF |
702 | return -EIO; |
703 | ||
d7b619cf | 704 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
705 | if (ses->need_reconnect) |
706 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
707 | already closed due to reconnect */ | |
1da177e4 LT |
708 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
709 | if (rc) { | |
d7b619cf | 710 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
711 | return rc; |
712 | } | |
713 | ||
3b795210 | 714 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 715 | |
3b795210 | 716 | if (ses->server->secMode & |
1da177e4 LT |
717 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
718 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
719 | |
720 | pSMB->hdr.Uid = ses->Suid; | |
721 | ||
722 | pSMB->AndXCommand = 0xFF; | |
133672ef | 723 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 724 | session_already_dead: |
d7b619cf | 725 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
726 | |
727 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 728 | since server closed smb session, no sense reporting |
1da177e4 LT |
729 | error */ |
730 | if (rc == -EAGAIN) | |
731 | rc = 0; | |
732 | return rc; | |
733 | } | |
734 | ||
2d785a50 SF |
735 | int |
736 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
737 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
738 | { | |
739 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
740 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
741 | struct unlink_psx_rq *pRqD; | |
742 | int name_len; | |
743 | int rc = 0; | |
744 | int bytes_returned = 0; | |
745 | __u16 params, param_offset, offset, byte_count; | |
746 | ||
747 | cFYI(1, ("In POSIX delete")); | |
748 | PsxDelete: | |
749 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
750 | (void **) &pSMBr); | |
751 | if (rc) | |
752 | return rc; | |
753 | ||
754 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
755 | name_len = | |
756 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
757 | PATH_MAX, nls_codepage, remap); | |
758 | name_len++; /* trailing null */ | |
759 | name_len *= 2; | |
760 | } else { /* BB add path length overrun check */ | |
761 | name_len = strnlen(fileName, PATH_MAX); | |
762 | name_len++; /* trailing null */ | |
763 | strncpy(pSMB->FileName, fileName, name_len); | |
764 | } | |
765 | ||
766 | params = 6 + name_len; | |
767 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
768 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
769 | pSMB->MaxSetupCount = 0; | |
770 | pSMB->Reserved = 0; | |
771 | pSMB->Flags = 0; | |
772 | pSMB->Timeout = 0; | |
773 | pSMB->Reserved2 = 0; | |
774 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
775 | InformationLevel) - 4; | |
776 | offset = param_offset + params; | |
777 | ||
778 | /* Setup pointer to Request Data (inode type) */ | |
779 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
780 | pRqD->type = cpu_to_le16(type); | |
781 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
782 | pSMB->DataOffset = cpu_to_le16(offset); | |
783 | pSMB->SetupCount = 1; | |
784 | pSMB->Reserved3 = 0; | |
785 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
786 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
787 | ||
788 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
789 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
790 | pSMB->ParameterCount = cpu_to_le16(params); | |
791 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
792 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
793 | pSMB->Reserved4 = 0; | |
794 | pSMB->hdr.smb_buf_length += byte_count; | |
795 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
796 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
797 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 798 | if (rc) |
2d785a50 | 799 | cFYI(1, ("Posix delete returned %d", rc)); |
2d785a50 SF |
800 | cifs_buf_release(pSMB); |
801 | ||
802 | cifs_stats_inc(&tcon->num_deletes); | |
803 | ||
804 | if (rc == -EAGAIN) | |
805 | goto PsxDelete; | |
806 | ||
807 | return rc; | |
808 | } | |
809 | ||
1da177e4 | 810 | int |
737b758c SF |
811 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
812 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
813 | { |
814 | DELETE_FILE_REQ *pSMB = NULL; | |
815 | DELETE_FILE_RSP *pSMBr = NULL; | |
816 | int rc = 0; | |
817 | int bytes_returned; | |
818 | int name_len; | |
819 | ||
820 | DelFileRetry: | |
821 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
822 | (void **) &pSMBr); | |
823 | if (rc) | |
824 | return rc; | |
825 | ||
826 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
827 | name_len = | |
50c2f753 | 828 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 829 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
830 | name_len++; /* trailing null */ |
831 | name_len *= 2; | |
09d1db5c | 832 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
833 | name_len = strnlen(fileName, PATH_MAX); |
834 | name_len++; /* trailing null */ | |
835 | strncpy(pSMB->fileName, fileName, name_len); | |
836 | } | |
837 | pSMB->SearchAttributes = | |
838 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
839 | pSMB->BufferFormat = 0x04; | |
840 | pSMB->hdr.smb_buf_length += name_len + 1; | |
841 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
842 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
843 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 844 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 845 | if (rc) |
1da177e4 | 846 | cFYI(1, ("Error in RMFile = %d", rc)); |
1da177e4 LT |
847 | |
848 | cifs_buf_release(pSMB); | |
849 | if (rc == -EAGAIN) | |
850 | goto DelFileRetry; | |
851 | ||
852 | return rc; | |
853 | } | |
854 | ||
855 | int | |
50c2f753 | 856 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 857 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
858 | { |
859 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
860 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
861 | int rc = 0; | |
862 | int bytes_returned; | |
863 | int name_len; | |
864 | ||
865 | cFYI(1, ("In CIFSSMBRmDir")); | |
866 | RmDirRetry: | |
867 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
868 | (void **) &pSMBr); | |
869 | if (rc) | |
870 | return rc; | |
871 | ||
872 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
873 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
874 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
875 | name_len++; /* trailing null */ |
876 | name_len *= 2; | |
09d1db5c | 877 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
878 | name_len = strnlen(dirName, PATH_MAX); |
879 | name_len++; /* trailing null */ | |
880 | strncpy(pSMB->DirName, dirName, name_len); | |
881 | } | |
882 | ||
883 | pSMB->BufferFormat = 0x04; | |
884 | pSMB->hdr.smb_buf_length += name_len + 1; | |
885 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
886 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
887 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 888 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 889 | if (rc) |
1da177e4 | 890 | cFYI(1, ("Error in RMDir = %d", rc)); |
1da177e4 LT |
891 | |
892 | cifs_buf_release(pSMB); | |
893 | if (rc == -EAGAIN) | |
894 | goto RmDirRetry; | |
895 | return rc; | |
896 | } | |
897 | ||
898 | int | |
899 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 900 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
901 | { |
902 | int rc = 0; | |
903 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
904 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
905 | int bytes_returned; | |
906 | int name_len; | |
907 | ||
908 | cFYI(1, ("In CIFSSMBMkDir")); | |
909 | MkDirRetry: | |
910 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
911 | (void **) &pSMBr); | |
912 | if (rc) | |
913 | return rc; | |
914 | ||
915 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 916 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 917 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
918 | name_len++; /* trailing null */ |
919 | name_len *= 2; | |
09d1db5c | 920 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
921 | name_len = strnlen(name, PATH_MAX); |
922 | name_len++; /* trailing null */ | |
923 | strncpy(pSMB->DirName, name, name_len); | |
924 | } | |
925 | ||
926 | pSMB->BufferFormat = 0x04; | |
927 | pSMB->hdr.smb_buf_length += name_len + 1; | |
928 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
929 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
930 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 931 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 932 | if (rc) |
1da177e4 | 933 | cFYI(1, ("Error in Mkdir = %d", rc)); |
a5a2b489 | 934 | |
1da177e4 LT |
935 | cifs_buf_release(pSMB); |
936 | if (rc == -EAGAIN) | |
937 | goto MkDirRetry; | |
938 | return rc; | |
939 | } | |
940 | ||
2dd29d31 SF |
941 | int |
942 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 943 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 944 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
945 | const struct nls_table *nls_codepage, int remap) |
946 | { | |
947 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
948 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
949 | int name_len; | |
950 | int rc = 0; | |
951 | int bytes_returned = 0; | |
2dd29d31 | 952 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
953 | OPEN_PSX_REQ *pdata; |
954 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 SF |
955 | |
956 | cFYI(1, ("In POSIX Create")); | |
957 | PsxCreat: | |
958 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
959 | (void **) &pSMBr); | |
960 | if (rc) | |
961 | return rc; | |
962 | ||
963 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
964 | name_len = | |
965 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
966 | PATH_MAX, nls_codepage, remap); | |
967 | name_len++; /* trailing null */ | |
968 | name_len *= 2; | |
969 | } else { /* BB improve the check for buffer overruns BB */ | |
970 | name_len = strnlen(name, PATH_MAX); | |
971 | name_len++; /* trailing null */ | |
972 | strncpy(pSMB->FileName, name, name_len); | |
973 | } | |
974 | ||
975 | params = 6 + name_len; | |
976 | count = sizeof(OPEN_PSX_REQ); | |
977 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
978 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
979 | pSMB->MaxSetupCount = 0; | |
980 | pSMB->Reserved = 0; | |
981 | pSMB->Flags = 0; | |
982 | pSMB->Timeout = 0; | |
983 | pSMB->Reserved2 = 0; | |
984 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 985 | InformationLevel) - 4; |
2dd29d31 | 986 | offset = param_offset + params; |
2dd29d31 | 987 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 988 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 989 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 990 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
991 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
992 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
993 | pSMB->DataOffset = cpu_to_le16(offset); | |
994 | pSMB->SetupCount = 1; | |
995 | pSMB->Reserved3 = 0; | |
996 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
997 | byte_count = 3 /* pad */ + params + count; | |
998 | ||
999 | pSMB->DataCount = cpu_to_le16(count); | |
1000 | pSMB->ParameterCount = cpu_to_le16(params); | |
1001 | pSMB->TotalDataCount = pSMB->DataCount; | |
1002 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1003 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1004 | pSMB->Reserved4 = 0; | |
50c2f753 | 1005 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1006 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1007 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1008 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1009 | if (rc) { | |
1010 | cFYI(1, ("Posix create returned %d", rc)); | |
1011 | goto psx_create_err; | |
1012 | } | |
1013 | ||
790fe579 | 1014 | cFYI(1, ("copying inode info")); |
2dd29d31 SF |
1015 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1016 | ||
1017 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1018 | rc = -EIO; /* bad smb */ | |
1019 | goto psx_create_err; | |
1020 | } | |
1021 | ||
1022 | /* copy return information to pRetData */ | |
50c2f753 | 1023 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1024 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1025 | |
2dd29d31 | 1026 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1027 | if (netfid) |
2dd29d31 SF |
1028 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1029 | /* Let caller know file was created so we can set the mode. */ | |
1030 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1031 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1032 | *pOplock |= CIFS_CREATE_ACTION; |
1033 | /* check to make sure response data is there */ | |
8f2376ad CG |
1034 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1035 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
90c81e0b | 1036 | cFYI(DBG2, ("unknown type")); |
cbac3cba | 1037 | } else { |
790fe579 | 1038 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1039 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
50c2f753 | 1040 | cERROR(1, ("Open response data too small")); |
8f2376ad | 1041 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1042 | goto psx_create_err; |
1043 | } | |
50c2f753 | 1044 | memcpy((char *) pRetData, |
cbac3cba | 1045 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1046 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1047 | } |
2dd29d31 SF |
1048 | |
1049 | psx_create_err: | |
1050 | cifs_buf_release(pSMB); | |
1051 | ||
65bc98b0 SF |
1052 | if (posix_flags & SMB_O_DIRECTORY) |
1053 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1054 | else | |
1055 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1056 | |
1057 | if (rc == -EAGAIN) | |
1058 | goto PsxCreat; | |
1059 | ||
50c2f753 | 1060 | return rc; |
2dd29d31 SF |
1061 | } |
1062 | ||
a9d02ad4 SF |
1063 | static __u16 convert_disposition(int disposition) |
1064 | { | |
1065 | __u16 ofun = 0; | |
1066 | ||
1067 | switch (disposition) { | |
1068 | case FILE_SUPERSEDE: | |
1069 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1070 | break; | |
1071 | case FILE_OPEN: | |
1072 | ofun = SMBOPEN_OAPPEND; | |
1073 | break; | |
1074 | case FILE_CREATE: | |
1075 | ofun = SMBOPEN_OCREATE; | |
1076 | break; | |
1077 | case FILE_OPEN_IF: | |
1078 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1079 | break; | |
1080 | case FILE_OVERWRITE: | |
1081 | ofun = SMBOPEN_OTRUNC; | |
1082 | break; | |
1083 | case FILE_OVERWRITE_IF: | |
1084 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1085 | break; | |
1086 | default: | |
790fe579 | 1087 | cFYI(1, ("unknown disposition %d", disposition)); |
a9d02ad4 SF |
1088 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1089 | } | |
1090 | return ofun; | |
1091 | } | |
1092 | ||
35fc37d5 JL |
1093 | static int |
1094 | access_flags_to_smbopen_mode(const int access_flags) | |
1095 | { | |
1096 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1097 | ||
1098 | if (masked_flags == GENERIC_READ) | |
1099 | return SMBOPEN_READ; | |
1100 | else if (masked_flags == GENERIC_WRITE) | |
1101 | return SMBOPEN_WRITE; | |
1102 | ||
1103 | /* just go for read/write */ | |
1104 | return SMBOPEN_READWRITE; | |
1105 | } | |
1106 | ||
a9d02ad4 SF |
1107 | int |
1108 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1109 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1110 | const int access_flags, const int create_options, __u16 *netfid, |
1111 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1112 | const struct nls_table *nls_codepage, int remap) |
1113 | { | |
1114 | int rc = -EACCES; | |
1115 | OPENX_REQ *pSMB = NULL; | |
1116 | OPENX_RSP *pSMBr = NULL; | |
1117 | int bytes_returned; | |
1118 | int name_len; | |
1119 | __u16 count; | |
1120 | ||
1121 | OldOpenRetry: | |
1122 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1123 | (void **) &pSMBr); | |
1124 | if (rc) | |
1125 | return rc; | |
1126 | ||
1127 | pSMB->AndXCommand = 0xFF; /* none */ | |
1128 | ||
1129 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1130 | count = 1; /* account for one byte pad to word boundary */ | |
1131 | name_len = | |
1132 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1133 | fileName, PATH_MAX, nls_codepage, remap); | |
1134 | name_len++; /* trailing null */ | |
1135 | name_len *= 2; | |
1136 | } else { /* BB improve check for buffer overruns BB */ | |
1137 | count = 0; /* no pad */ | |
1138 | name_len = strnlen(fileName, PATH_MAX); | |
1139 | name_len++; /* trailing null */ | |
1140 | strncpy(pSMB->fileName, fileName, name_len); | |
1141 | } | |
1142 | if (*pOplock & REQ_OPLOCK) | |
1143 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1144 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1145 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1146 | |
a9d02ad4 | 1147 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1148 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1149 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1150 | /* set file as system file if special file such | |
1151 | as fifo and server expecting SFU style and | |
1152 | no Unix extensions */ | |
1153 | ||
790fe579 SF |
1154 | if (create_options & CREATE_OPTION_SPECIAL) |
1155 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1156 | else /* BB FIXME BB */ |
1157 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1158 | |
67750fb9 JL |
1159 | if (create_options & CREATE_OPTION_READONLY) |
1160 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1161 | |
1162 | /* BB FIXME BB */ | |
50c2f753 SF |
1163 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1164 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1165 | /* BB FIXME END BB */ |
3e87d803 SF |
1166 | |
1167 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1168 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1169 | count += name_len; |
1170 | pSMB->hdr.smb_buf_length += count; | |
1171 | ||
1172 | pSMB->ByteCount = cpu_to_le16(count); | |
1173 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1174 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1175 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a9d02ad4 SF |
1176 | cifs_stats_inc(&tcon->num_opens); |
1177 | if (rc) { | |
1178 | cFYI(1, ("Error in Open = %d", rc)); | |
1179 | } else { | |
1180 | /* BB verify if wct == 15 */ | |
1181 | ||
582d21e5 | 1182 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1183 | |
1184 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1185 | /* Let caller know file was created so we can set the mode. */ | |
1186 | /* Do we care about the CreateAction in any other cases? */ | |
1187 | /* BB FIXME BB */ | |
790fe579 | 1188 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1189 | *pOplock |= CIFS_CREATE_ACTION; */ |
1190 | /* BB FIXME END */ | |
1191 | ||
790fe579 | 1192 | if (pfile_info) { |
a9d02ad4 SF |
1193 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1194 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1195 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1196 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1197 | pfile_info->Attributes = |
50c2f753 | 1198 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1199 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1200 | pfile_info->AllocationSize = |
1201 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1202 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1203 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1204 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1205 | } |
1206 | } | |
1207 | ||
1208 | cifs_buf_release(pSMB); | |
1209 | if (rc == -EAGAIN) | |
1210 | goto OldOpenRetry; | |
1211 | return rc; | |
1212 | } | |
1213 | ||
1da177e4 LT |
1214 | int |
1215 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1216 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1217 | const int access_flags, const int create_options, __u16 *netfid, |
1218 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1219 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1220 | { |
1221 | int rc = -EACCES; | |
1222 | OPEN_REQ *pSMB = NULL; | |
1223 | OPEN_RSP *pSMBr = NULL; | |
1224 | int bytes_returned; | |
1225 | int name_len; | |
1226 | __u16 count; | |
1227 | ||
1228 | openRetry: | |
1229 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1230 | (void **) &pSMBr); | |
1231 | if (rc) | |
1232 | return rc; | |
1233 | ||
1234 | pSMB->AndXCommand = 0xFF; /* none */ | |
1235 | ||
1236 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1237 | count = 1; /* account for one byte pad to word boundary */ | |
1238 | name_len = | |
b1a45695 | 1239 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1240 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1241 | name_len++; /* trailing null */ |
1242 | name_len *= 2; | |
1243 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1244 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1245 | count = 0; /* no pad */ |
1246 | name_len = strnlen(fileName, PATH_MAX); | |
1247 | name_len++; /* trailing null */ | |
1248 | pSMB->NameLength = cpu_to_le16(name_len); | |
1249 | strncpy(pSMB->fileName, fileName, name_len); | |
1250 | } | |
1251 | if (*pOplock & REQ_OPLOCK) | |
1252 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1253 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1254 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1255 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1256 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1257 | /* set file as system file if special file such |
1258 | as fifo and server expecting SFU style and | |
1259 | no Unix extensions */ | |
790fe579 | 1260 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1261 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1262 | else | |
1263 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1264 | |
1da177e4 LT |
1265 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1266 | /* but it helps speed up case sensitive checks for other | |
1267 | servers such as Samba */ | |
1268 | if (tcon->ses->capabilities & CAP_UNIX) | |
1269 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1270 | ||
67750fb9 JL |
1271 | if (create_options & CREATE_OPTION_READONLY) |
1272 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1273 | ||
1da177e4 LT |
1274 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1275 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1276 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1277 | /* BB Expirement with various impersonation levels and verify */ |
1278 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1279 | pSMB->SecurityFlags = |
1280 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1281 | ||
1282 | count += name_len; | |
1283 | pSMB->hdr.smb_buf_length += count; | |
1284 | ||
1285 | pSMB->ByteCount = cpu_to_le16(count); | |
1286 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1287 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1288 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a4544347 | 1289 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 LT |
1290 | if (rc) { |
1291 | cFYI(1, ("Error in Open = %d", rc)); | |
1292 | } else { | |
09d1db5c | 1293 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1294 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1295 | /* Let caller know file was created so we can set the mode. */ | |
1296 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1297 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1298 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1299 | if (pfile_info) { |
61e74801 SF |
1300 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1301 | 36 /* CreationTime to Attributes */); | |
1302 | /* the file_info buf is endian converted by caller */ | |
1303 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1304 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1305 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1306 | pfile_info->DeletePending = 0; | |
1da177e4 | 1307 | } |
1da177e4 | 1308 | } |
a5a2b489 | 1309 | |
1da177e4 LT |
1310 | cifs_buf_release(pSMB); |
1311 | if (rc == -EAGAIN) | |
1312 | goto openRetry; | |
1313 | return rc; | |
1314 | } | |
1315 | ||
1da177e4 | 1316 | int |
50c2f753 SF |
1317 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1318 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1319 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1320 | { |
1321 | int rc = -EACCES; | |
1322 | READ_REQ *pSMB = NULL; | |
1323 | READ_RSP *pSMBr = NULL; | |
1324 | char *pReadData = NULL; | |
bfa0d75a | 1325 | int wct; |
ec637e3f SF |
1326 | int resp_buf_type = 0; |
1327 | struct kvec iov[1]; | |
1da177e4 | 1328 | |
790fe579 SF |
1329 | cFYI(1, ("Reading %d bytes on fid %d", count, netfid)); |
1330 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
bfa0d75a | 1331 | wct = 12; |
4c3130ef | 1332 | else { |
bfa0d75a | 1333 | wct = 10; /* old style read */ |
4c3130ef SF |
1334 | if ((lseek >> 32) > 0) { |
1335 | /* can not handle this big offset for old */ | |
1336 | return -EIO; | |
1337 | } | |
1338 | } | |
1da177e4 LT |
1339 | |
1340 | *nbytes = 0; | |
ec637e3f | 1341 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1342 | if (rc) |
1343 | return rc; | |
1344 | ||
1345 | /* tcon and ses pointer are checked in smb_init */ | |
1346 | if (tcon->ses->server == NULL) | |
1347 | return -ECONNABORTED; | |
1348 | ||
ec637e3f | 1349 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1350 | pSMB->Fid = netfid; |
1351 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1352 | if (wct == 12) |
bfa0d75a | 1353 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1354 | |
1da177e4 LT |
1355 | pSMB->Remaining = 0; |
1356 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1357 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1358 | if (wct == 12) |
bfa0d75a SF |
1359 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1360 | else { | |
1361 | /* old style read */ | |
50c2f753 | 1362 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1363 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1364 | pSMBW->ByteCount = 0; |
bfa0d75a | 1365 | } |
ec637e3f SF |
1366 | |
1367 | iov[0].iov_base = (char *)pSMB; | |
1368 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
a761ac57 | 1369 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
133672ef | 1370 | &resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR); |
a4544347 | 1371 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1372 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 LT |
1373 | if (rc) { |
1374 | cERROR(1, ("Send error in read = %d", rc)); | |
1375 | } else { | |
1376 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1377 | data_length = data_length << 16; | |
1378 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1379 | *nbytes = data_length; | |
1380 | ||
1381 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1382 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1383 | || (data_length > count)) { |
50c2f753 SF |
1384 | cFYI(1, ("bad length %d for count %d", |
1385 | data_length, count)); | |
1da177e4 LT |
1386 | rc = -EIO; |
1387 | *nbytes = 0; | |
1388 | } else { | |
ec637e3f | 1389 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1390 | le16_to_cpu(pSMBr->DataOffset); |
1391 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
50c2f753 SF |
1392 | cERROR(1,("Faulting on read rc = %d",rc)); |
1393 | rc = -EFAULT; | |
26f57364 | 1394 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1395 | if (*buf) |
50c2f753 | 1396 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1397 | } |
1398 | } | |
1da177e4 | 1399 | |
4b8f930f | 1400 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1401 | if (*buf) { |
1402 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1403 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1404 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1405 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1406 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1407 | /* return buffer to caller to free */ |
1408 | *buf = iov[0].iov_base; | |
790fe579 | 1409 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1410 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1411 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1412 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1413 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1414 | |
1415 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1416 | since file handle passed in no longer valid */ |
1417 | return rc; | |
1418 | } | |
1419 | ||
ec637e3f | 1420 | |
1da177e4 LT |
1421 | int |
1422 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1423 | const int netfid, const unsigned int count, | |
1424 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1425 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1426 | { |
1427 | int rc = -EACCES; | |
1428 | WRITE_REQ *pSMB = NULL; | |
1429 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1430 | int bytes_returned, wct; |
1da177e4 LT |
1431 | __u32 bytes_sent; |
1432 | __u16 byte_count; | |
1433 | ||
61de800d | 1434 | /* cFYI(1, ("write at %lld %d bytes", offset, count));*/ |
790fe579 | 1435 | if (tcon->ses == NULL) |
1c955187 SF |
1436 | return -ECONNABORTED; |
1437 | ||
790fe579 | 1438 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1439 | wct = 14; |
4c3130ef | 1440 | else { |
1c955187 | 1441 | wct = 12; |
4c3130ef SF |
1442 | if ((offset >> 32) > 0) { |
1443 | /* can not handle big offset for old srv */ | |
1444 | return -EIO; | |
1445 | } | |
1446 | } | |
1c955187 SF |
1447 | |
1448 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1449 | (void **) &pSMBr); |
1450 | if (rc) | |
1451 | return rc; | |
1452 | /* tcon and ses pointer are checked in smb_init */ | |
1453 | if (tcon->ses->server == NULL) | |
1454 | return -ECONNABORTED; | |
1455 | ||
1456 | pSMB->AndXCommand = 0xFF; /* none */ | |
1457 | pSMB->Fid = netfid; | |
1458 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1459 | if (wct == 14) |
1c955187 | 1460 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1461 | |
1da177e4 LT |
1462 | pSMB->Reserved = 0xFFFFFFFF; |
1463 | pSMB->WriteMode = 0; | |
1464 | pSMB->Remaining = 0; | |
1465 | ||
50c2f753 | 1466 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1467 | can send more if LARGE_WRITE_X capability returned by the server and if |
1468 | our buffer is big enough or if we convert to iovecs on socket writes | |
1469 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1470 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1471 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1472 | } else { | |
1473 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1474 | & ~0xFF; | |
1475 | } | |
1476 | ||
1477 | if (bytes_sent > count) | |
1478 | bytes_sent = count; | |
1479 | pSMB->DataOffset = | |
50c2f753 | 1480 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1481 | if (buf) |
61e74801 | 1482 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1483 | else if (ubuf) { |
1484 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1485 | cifs_buf_release(pSMB); |
1486 | return -EFAULT; | |
1487 | } | |
e30dcf3a | 1488 | } else if (count != 0) { |
1da177e4 LT |
1489 | /* No buffer */ |
1490 | cifs_buf_release(pSMB); | |
1491 | return -EINVAL; | |
e30dcf3a | 1492 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1493 | if (wct == 14) |
e30dcf3a | 1494 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1495 | else /* wct == 12 */ |
e30dcf3a | 1496 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1497 | |
1da177e4 LT |
1498 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1499 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1500 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1501 | |
790fe579 | 1502 | if (wct == 14) |
1c955187 | 1503 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1504 | else { /* old style write has byte count 4 bytes earlier |
1505 | so 4 bytes pad */ | |
1506 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1507 | (struct smb_com_writex_req *)pSMB; |
1508 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1509 | } | |
1da177e4 LT |
1510 | |
1511 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1512 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1513 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 LT |
1514 | if (rc) { |
1515 | cFYI(1, ("Send error in write = %d", rc)); | |
1516 | *nbytes = 0; | |
1517 | } else { | |
1518 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1519 | *nbytes = (*nbytes) << 16; | |
1520 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1521 | } | |
1522 | ||
1523 | cifs_buf_release(pSMB); | |
1524 | ||
50c2f753 | 1525 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1526 | since file handle passed in no longer valid */ |
1527 | ||
1528 | return rc; | |
1529 | } | |
1530 | ||
d6e04ae6 SF |
1531 | int |
1532 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1533 | const int netfid, const unsigned int count, |
3e84469d SF |
1534 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1535 | int n_vec, const int long_op) | |
1da177e4 LT |
1536 | { |
1537 | int rc = -EACCES; | |
1538 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1539 | int wct; |
d6e04ae6 | 1540 | int smb_hdr_len; |
ec637e3f | 1541 | int resp_buf_type = 0; |
1da177e4 | 1542 | |
fbec9ab9 JL |
1543 | *nbytes = 0; |
1544 | ||
790fe579 | 1545 | cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count)); |
ff7feac9 | 1546 | |
4c3130ef | 1547 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1548 | wct = 14; |
4c3130ef | 1549 | } else { |
8cc64c6e | 1550 | wct = 12; |
4c3130ef SF |
1551 | if ((offset >> 32) > 0) { |
1552 | /* can not handle big offset for old srv */ | |
1553 | return -EIO; | |
1554 | } | |
1555 | } | |
8cc64c6e | 1556 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1557 | if (rc) |
1558 | return rc; | |
1da177e4 LT |
1559 | /* tcon and ses pointer are checked in smb_init */ |
1560 | if (tcon->ses->server == NULL) | |
1561 | return -ECONNABORTED; | |
1562 | ||
d6e04ae6 | 1563 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1564 | pSMB->Fid = netfid; |
1565 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1566 | if (wct == 14) |
8cc64c6e | 1567 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1568 | pSMB->Reserved = 0xFFFFFFFF; |
1569 | pSMB->WriteMode = 0; | |
1570 | pSMB->Remaining = 0; | |
d6e04ae6 | 1571 | |
1da177e4 | 1572 | pSMB->DataOffset = |
50c2f753 | 1573 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1574 | |
3e84469d SF |
1575 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1576 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1577 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1578 | if (wct == 14) |
8cc64c6e SF |
1579 | pSMB->hdr.smb_buf_length += count+1; |
1580 | else /* wct == 12 */ | |
790fe579 SF |
1581 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1582 | if (wct == 14) | |
8cc64c6e SF |
1583 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1584 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1585 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1586 | (struct smb_com_writex_req *)pSMB; |
1587 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1588 | } | |
3e84469d | 1589 | iov[0].iov_base = pSMB; |
790fe579 | 1590 | if (wct == 14) |
ec637e3f SF |
1591 | iov[0].iov_len = smb_hdr_len + 4; |
1592 | else /* wct == 12 pad bigger by four bytes */ | |
1593 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1594 | |
1da177e4 | 1595 | |
ec637e3f | 1596 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1597 | long_op); |
a4544347 | 1598 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1599 | if (rc) { |
8cc64c6e | 1600 | cFYI(1, ("Send error Write2 = %d", rc)); |
790fe579 | 1601 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1602 | /* presumably this can not happen, but best to be safe */ |
1603 | rc = -EIO; | |
d6e04ae6 | 1604 | } else { |
ad7a2926 | 1605 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1606 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1607 | *nbytes = (*nbytes) << 16; | |
1608 | *nbytes += le16_to_cpu(pSMBr->Count); | |
50c2f753 | 1609 | } |
1da177e4 | 1610 | |
4b8f930f | 1611 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1612 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1613 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1614 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1615 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1616 | |
50c2f753 | 1617 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1618 | since file handle passed in no longer valid */ |
1619 | ||
1620 | return rc; | |
1621 | } | |
d6e04ae6 SF |
1622 | |
1623 | ||
1da177e4 LT |
1624 | int |
1625 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1626 | const __u16 smb_file_id, const __u64 len, | |
1627 | const __u64 offset, const __u32 numUnlock, | |
4b18f2a9 | 1628 | const __u32 numLock, const __u8 lockType, const bool waitFlag) |
1da177e4 LT |
1629 | { |
1630 | int rc = 0; | |
1631 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1632 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1633 | int bytes_returned; |
1634 | int timeout = 0; | |
1635 | __u16 count; | |
1636 | ||
4b18f2a9 | 1637 | cFYI(1, ("CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock)); |
46810cbf SF |
1638 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1639 | ||
1da177e4 LT |
1640 | if (rc) |
1641 | return rc; | |
1642 | ||
790fe579 | 1643 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1644 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1645 | pSMB->Timeout = 0; |
4b18f2a9 | 1646 | } else if (waitFlag) { |
133672ef | 1647 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1648 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1649 | } else { | |
1650 | pSMB->Timeout = 0; | |
1651 | } | |
1652 | ||
1653 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1654 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1655 | pSMB->LockType = lockType; | |
1656 | pSMB->AndXCommand = 0xFF; /* none */ | |
1657 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1658 | ||
790fe579 | 1659 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1660 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1661 | /* BB where to store pid high? */ | |
1662 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1663 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1664 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1665 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1666 | count = sizeof(LOCKING_ANDX_RANGE); | |
1667 | } else { | |
1668 | /* oplock break */ | |
1669 | count = 0; | |
1670 | } | |
1671 | pSMB->hdr.smb_buf_length += count; | |
1672 | pSMB->ByteCount = cpu_to_le16(count); | |
1673 | ||
7ee1af76 JA |
1674 | if (waitFlag) { |
1675 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1676 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1677 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1678 | } else { |
133672ef SF |
1679 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1680 | timeout); | |
1681 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1682 | } |
a4544347 | 1683 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1684 | if (rc) |
1da177e4 | 1685 | cFYI(1, ("Send error in Lock = %d", rc)); |
1da177e4 | 1686 | |
50c2f753 | 1687 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1688 | since file handle passed in no longer valid */ |
1689 | return rc; | |
1690 | } | |
1691 | ||
08547b03 SF |
1692 | int |
1693 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1694 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1695 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1696 | const bool waitFlag) |
08547b03 SF |
1697 | { |
1698 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1699 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1700 | struct cifs_posix_lock *parm_data; |
1701 | int rc = 0; | |
3a5ff61c | 1702 | int timeout = 0; |
08547b03 | 1703 | int bytes_returned = 0; |
133672ef | 1704 | int resp_buf_type = 0; |
08547b03 | 1705 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1706 | struct kvec iov[1]; |
08547b03 SF |
1707 | |
1708 | cFYI(1, ("Posix Lock")); | |
fc94cdb9 | 1709 | |
790fe579 | 1710 | if (pLockData == NULL) |
ed5f0370 | 1711 | return -EINVAL; |
fc94cdb9 | 1712 | |
08547b03 SF |
1713 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1714 | ||
1715 | if (rc) | |
1716 | return rc; | |
1717 | ||
1718 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1719 | ||
50c2f753 | 1720 | params = 6; |
08547b03 SF |
1721 | pSMB->MaxSetupCount = 0; |
1722 | pSMB->Reserved = 0; | |
1723 | pSMB->Flags = 0; | |
08547b03 SF |
1724 | pSMB->Reserved2 = 0; |
1725 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1726 | offset = param_offset + params; | |
1727 | ||
08547b03 SF |
1728 | count = sizeof(struct cifs_posix_lock); |
1729 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1730 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1731 | pSMB->SetupCount = 1; |
1732 | pSMB->Reserved3 = 0; | |
790fe579 | 1733 | if (get_flag) |
08547b03 SF |
1734 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1735 | else | |
1736 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1737 | byte_count = 3 /* pad */ + params + count; | |
1738 | pSMB->DataCount = cpu_to_le16(count); | |
1739 | pSMB->ParameterCount = cpu_to_le16(params); | |
1740 | pSMB->TotalDataCount = pSMB->DataCount; | |
1741 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1742 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1743 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1744 | (((char *) &pSMB->hdr.Protocol) + offset); |
1745 | ||
1746 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1747 | if (waitFlag) { |
133672ef | 1748 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1749 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1750 | pSMB->Timeout = cpu_to_le32(-1); |
1751 | } else | |
1752 | pSMB->Timeout = 0; | |
1753 | ||
08547b03 | 1754 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1755 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1756 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1757 | |
1758 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1759 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1760 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1761 | pSMB->Reserved4 = 0; | |
1762 | pSMB->hdr.smb_buf_length += byte_count; | |
1763 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1764 | if (waitFlag) { |
1765 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1766 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1767 | } else { | |
133672ef SF |
1768 | iov[0].iov_base = (char *)pSMB; |
1769 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1770 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1771 | &resp_buf_type, timeout); | |
1772 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1773 | not try to free it twice below on exit */ | |
1774 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1775 | } |
1776 | ||
08547b03 SF |
1777 | if (rc) { |
1778 | cFYI(1, ("Send error in Posix Lock = %d", rc)); | |
fc94cdb9 SF |
1779 | } else if (get_flag) { |
1780 | /* lock structure can be returned on get */ | |
1781 | __u16 data_offset; | |
1782 | __u16 data_count; | |
1783 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1784 | ||
1785 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1786 | rc = -EIO; /* bad smb */ | |
1787 | goto plk_err_exit; | |
1788 | } | |
fc94cdb9 SF |
1789 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1790 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1791 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1792 | rc = -EIO; |
1793 | goto plk_err_exit; | |
1794 | } | |
1795 | parm_data = (struct cifs_posix_lock *) | |
1796 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
790fe579 | 1797 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1798 | pLockData->fl_type = F_UNLCK; |
08547b03 | 1799 | } |
50c2f753 | 1800 | |
fc94cdb9 | 1801 | plk_err_exit: |
08547b03 SF |
1802 | if (pSMB) |
1803 | cifs_small_buf_release(pSMB); | |
1804 | ||
133672ef SF |
1805 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1806 | cifs_small_buf_release(iov[0].iov_base); | |
1807 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1808 | cifs_buf_release(iov[0].iov_base); | |
1809 | ||
08547b03 SF |
1810 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1811 | since file handle passed in no longer valid */ | |
1812 | ||
1813 | return rc; | |
1814 | } | |
1815 | ||
1816 | ||
1da177e4 LT |
1817 | int |
1818 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1819 | { | |
1820 | int rc = 0; | |
1821 | CLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
1822 | cFYI(1, ("In CIFSSMBClose")); |
1823 | ||
1824 | /* do not retry on dead session on close */ | |
1825 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1826 | if (rc == -EAGAIN) |
1da177e4 LT |
1827 | return 0; |
1828 | if (rc) | |
1829 | return rc; | |
1830 | ||
1da177e4 | 1831 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1832 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1833 | pSMB->ByteCount = 0; |
133672ef | 1834 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1835 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1836 | if (rc) { |
790fe579 | 1837 | if (rc != -EINTR) { |
1da177e4 LT |
1838 | /* EINTR is expected when user ctl-c to kill app */ |
1839 | cERROR(1, ("Send error in Close = %d", rc)); | |
1840 | } | |
1841 | } | |
1842 | ||
1da177e4 | 1843 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1844 | if (rc == -EAGAIN) |
1da177e4 LT |
1845 | rc = 0; |
1846 | ||
1847 | return rc; | |
1848 | } | |
1849 | ||
b298f223 SF |
1850 | int |
1851 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1852 | { | |
1853 | int rc = 0; | |
1854 | FLUSH_REQ *pSMB = NULL; | |
1855 | cFYI(1, ("In CIFSSMBFlush")); | |
1856 | ||
1857 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
1858 | if (rc) | |
1859 | return rc; | |
1860 | ||
1861 | pSMB->FileID = (__u16) smb_file_id; | |
1862 | pSMB->ByteCount = 0; | |
1863 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1864 | cifs_stats_inc(&tcon->num_flushes); | |
1865 | if (rc) | |
1866 | cERROR(1, ("Send error in Flush = %d", rc)); | |
1867 | ||
1868 | return rc; | |
1869 | } | |
1870 | ||
1da177e4 LT |
1871 | int |
1872 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1873 | const char *fromName, const char *toName, | |
737b758c | 1874 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1875 | { |
1876 | int rc = 0; | |
1877 | RENAME_REQ *pSMB = NULL; | |
1878 | RENAME_RSP *pSMBr = NULL; | |
1879 | int bytes_returned; | |
1880 | int name_len, name_len2; | |
1881 | __u16 count; | |
1882 | ||
1883 | cFYI(1, ("In CIFSSMBRename")); | |
1884 | renameRetry: | |
1885 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1886 | (void **) &pSMBr); | |
1887 | if (rc) | |
1888 | return rc; | |
1889 | ||
1890 | pSMB->BufferFormat = 0x04; | |
1891 | pSMB->SearchAttributes = | |
1892 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1893 | ATTR_DIRECTORY); | |
1894 | ||
1895 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1896 | name_len = | |
50c2f753 | 1897 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1898 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1899 | name_len++; /* trailing null */ |
1900 | name_len *= 2; | |
1901 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1902 | /* protocol requires ASCII signature byte on Unicode string */ | |
1903 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1904 | name_len2 = | |
582d21e5 | 1905 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1906 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1907 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1908 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 1909 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
1910 | name_len = strnlen(fromName, PATH_MAX); |
1911 | name_len++; /* trailing null */ | |
1912 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1913 | name_len2 = strnlen(toName, PATH_MAX); | |
1914 | name_len2++; /* trailing null */ | |
1915 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1916 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1917 | name_len2++; /* trailing null */ | |
1918 | name_len2++; /* signature byte */ | |
1919 | } | |
1920 | ||
1921 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1922 | pSMB->hdr.smb_buf_length += count; | |
1923 | pSMB->ByteCount = cpu_to_le16(count); | |
1924 | ||
1925 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1926 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1927 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 1928 | if (rc) |
1da177e4 | 1929 | cFYI(1, ("Send error in rename = %d", rc)); |
1da177e4 | 1930 | |
1da177e4 LT |
1931 | cifs_buf_release(pSMB); |
1932 | ||
1933 | if (rc == -EAGAIN) | |
1934 | goto renameRetry; | |
1935 | ||
1936 | return rc; | |
1937 | } | |
1938 | ||
50c2f753 | 1939 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 1940 | int netfid, const char *target_name, |
50c2f753 | 1941 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1942 | { |
1943 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1944 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 1945 | struct set_file_rename *rename_info; |
1da177e4 LT |
1946 | char *data_offset; |
1947 | char dummy_string[30]; | |
1948 | int rc = 0; | |
1949 | int bytes_returned = 0; | |
1950 | int len_of_str; | |
1951 | __u16 params, param_offset, offset, count, byte_count; | |
1952 | ||
1953 | cFYI(1, ("Rename to File by handle")); | |
1954 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
1955 | (void **) &pSMBr); | |
1956 | if (rc) | |
1957 | return rc; | |
1958 | ||
1959 | params = 6; | |
1960 | pSMB->MaxSetupCount = 0; | |
1961 | pSMB->Reserved = 0; | |
1962 | pSMB->Flags = 0; | |
1963 | pSMB->Timeout = 0; | |
1964 | pSMB->Reserved2 = 0; | |
1965 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1966 | offset = param_offset + params; | |
1967 | ||
1968 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1969 | rename_info = (struct set_file_rename *) data_offset; | |
1970 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1971 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
1972 | pSMB->SetupCount = 1; |
1973 | pSMB->Reserved3 = 0; | |
1974 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1975 | byte_count = 3 /* pad */ + params; | |
1976 | pSMB->ParameterCount = cpu_to_le16(params); | |
1977 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1978 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1979 | pSMB->DataOffset = cpu_to_le16(offset); | |
1980 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
1981 | rename_info->overwrite = cpu_to_le32(1); | |
1982 | rename_info->root_fid = 0; | |
1983 | /* unicode only call */ | |
790fe579 | 1984 | if (target_name == NULL) { |
50c2f753 SF |
1985 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
1986 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 1987 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 1988 | } else { |
b1a45695 | 1989 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
1990 | target_name, PATH_MAX, nls_codepage, |
1991 | remap); | |
1da177e4 LT |
1992 | } |
1993 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 1994 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
1995 | byte_count += count; |
1996 | pSMB->DataCount = cpu_to_le16(count); | |
1997 | pSMB->TotalDataCount = pSMB->DataCount; | |
1998 | pSMB->Fid = netfid; | |
1999 | pSMB->InformationLevel = | |
2000 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2001 | pSMB->Reserved4 = 0; | |
2002 | pSMB->hdr.smb_buf_length += byte_count; | |
2003 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2004 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2005 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2006 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2007 | if (rc) |
790fe579 | 2008 | cFYI(1, ("Send error in Rename (by file handle) = %d", rc)); |
a5a2b489 | 2009 | |
1da177e4 LT |
2010 | cifs_buf_release(pSMB); |
2011 | ||
2012 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2013 | since file handle passed in no longer valid */ | |
2014 | ||
2015 | return rc; | |
2016 | } | |
2017 | ||
2018 | int | |
50c2f753 SF |
2019 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2020 | const __u16 target_tid, const char *toName, const int flags, | |
2021 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2022 | { |
2023 | int rc = 0; | |
2024 | COPY_REQ *pSMB = NULL; | |
2025 | COPY_RSP *pSMBr = NULL; | |
2026 | int bytes_returned; | |
2027 | int name_len, name_len2; | |
2028 | __u16 count; | |
2029 | ||
2030 | cFYI(1, ("In CIFSSMBCopy")); | |
2031 | copyRetry: | |
2032 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2033 | (void **) &pSMBr); | |
2034 | if (rc) | |
2035 | return rc; | |
2036 | ||
2037 | pSMB->BufferFormat = 0x04; | |
2038 | pSMB->Tid2 = target_tid; | |
2039 | ||
2040 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2041 | ||
2042 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2043 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2044 | fromName, PATH_MAX, nls_codepage, |
2045 | remap); | |
1da177e4 LT |
2046 | name_len++; /* trailing null */ |
2047 | name_len *= 2; | |
2048 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2049 | /* protocol requires ASCII signature byte on Unicode string */ | |
2050 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2051 | name_len2 = |
2052 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2053 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2054 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2055 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2056 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2057 | name_len = strnlen(fromName, PATH_MAX); |
2058 | name_len++; /* trailing null */ | |
2059 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2060 | name_len2 = strnlen(toName, PATH_MAX); | |
2061 | name_len2++; /* trailing null */ | |
2062 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2063 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2064 | name_len2++; /* trailing null */ | |
2065 | name_len2++; /* signature byte */ | |
2066 | } | |
2067 | ||
2068 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2069 | pSMB->hdr.smb_buf_length += count; | |
2070 | pSMB->ByteCount = cpu_to_le16(count); | |
2071 | ||
2072 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2073 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2074 | if (rc) { | |
2075 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
2076 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
2077 | } | |
0d817bc0 | 2078 | cifs_buf_release(pSMB); |
1da177e4 LT |
2079 | |
2080 | if (rc == -EAGAIN) | |
2081 | goto copyRetry; | |
2082 | ||
2083 | return rc; | |
2084 | } | |
2085 | ||
2086 | int | |
2087 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2088 | const char *fromName, const char *toName, | |
2089 | const struct nls_table *nls_codepage) | |
2090 | { | |
2091 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2092 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2093 | char *data_offset; | |
2094 | int name_len; | |
2095 | int name_len_target; | |
2096 | int rc = 0; | |
2097 | int bytes_returned = 0; | |
2098 | __u16 params, param_offset, offset, byte_count; | |
2099 | ||
2100 | cFYI(1, ("In Symlink Unix style")); | |
2101 | createSymLinkRetry: | |
2102 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2103 | (void **) &pSMBr); | |
2104 | if (rc) | |
2105 | return rc; | |
2106 | ||
2107 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2108 | name_len = | |
e89dc920 | 2109 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2110 | /* find define for this maxpathcomponent */ |
2111 | , nls_codepage); | |
2112 | name_len++; /* trailing null */ | |
2113 | name_len *= 2; | |
2114 | ||
50c2f753 | 2115 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2116 | name_len = strnlen(fromName, PATH_MAX); |
2117 | name_len++; /* trailing null */ | |
2118 | strncpy(pSMB->FileName, fromName, name_len); | |
2119 | } | |
2120 | params = 6 + name_len; | |
2121 | pSMB->MaxSetupCount = 0; | |
2122 | pSMB->Reserved = 0; | |
2123 | pSMB->Flags = 0; | |
2124 | pSMB->Timeout = 0; | |
2125 | pSMB->Reserved2 = 0; | |
2126 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2127 | InformationLevel) - 4; |
1da177e4 LT |
2128 | offset = param_offset + params; |
2129 | ||
2130 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2131 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2132 | name_len_target = | |
e89dc920 | 2133 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2134 | /* find define for this maxpathcomponent */ |
2135 | , nls_codepage); | |
2136 | name_len_target++; /* trailing null */ | |
2137 | name_len_target *= 2; | |
50c2f753 | 2138 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2139 | name_len_target = strnlen(toName, PATH_MAX); |
2140 | name_len_target++; /* trailing null */ | |
2141 | strncpy(data_offset, toName, name_len_target); | |
2142 | } | |
2143 | ||
2144 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2145 | /* BB find exact max on data count below from sess */ | |
2146 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2147 | pSMB->SetupCount = 1; | |
2148 | pSMB->Reserved3 = 0; | |
2149 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2150 | byte_count = 3 /* pad */ + params + name_len_target; | |
2151 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2152 | pSMB->ParameterCount = cpu_to_le16(params); | |
2153 | pSMB->TotalDataCount = pSMB->DataCount; | |
2154 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2155 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2156 | pSMB->DataOffset = cpu_to_le16(offset); | |
2157 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2158 | pSMB->Reserved4 = 0; | |
2159 | pSMB->hdr.smb_buf_length += byte_count; | |
2160 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2161 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2162 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2163 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2164 | if (rc) |
2d785a50 | 2165 | cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc)); |
1da177e4 | 2166 | |
0d817bc0 | 2167 | cifs_buf_release(pSMB); |
1da177e4 LT |
2168 | |
2169 | if (rc == -EAGAIN) | |
2170 | goto createSymLinkRetry; | |
2171 | ||
2172 | return rc; | |
2173 | } | |
2174 | ||
2175 | int | |
2176 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2177 | const char *fromName, const char *toName, | |
737b758c | 2178 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2179 | { |
2180 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2181 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2182 | char *data_offset; | |
2183 | int name_len; | |
2184 | int name_len_target; | |
2185 | int rc = 0; | |
2186 | int bytes_returned = 0; | |
2187 | __u16 params, param_offset, offset, byte_count; | |
2188 | ||
2189 | cFYI(1, ("In Create Hard link Unix style")); | |
2190 | createHardLinkRetry: | |
2191 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2192 | (void **) &pSMBr); | |
2193 | if (rc) | |
2194 | return rc; | |
2195 | ||
2196 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2197 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2198 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2199 | name_len++; /* trailing null */ |
2200 | name_len *= 2; | |
2201 | ||
50c2f753 | 2202 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2203 | name_len = strnlen(toName, PATH_MAX); |
2204 | name_len++; /* trailing null */ | |
2205 | strncpy(pSMB->FileName, toName, name_len); | |
2206 | } | |
2207 | params = 6 + name_len; | |
2208 | pSMB->MaxSetupCount = 0; | |
2209 | pSMB->Reserved = 0; | |
2210 | pSMB->Flags = 0; | |
2211 | pSMB->Timeout = 0; | |
2212 | pSMB->Reserved2 = 0; | |
2213 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2214 | InformationLevel) - 4; |
1da177e4 LT |
2215 | offset = param_offset + params; |
2216 | ||
2217 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2218 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2219 | name_len_target = | |
b1a45695 | 2220 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2221 | nls_codepage, remap); |
1da177e4 LT |
2222 | name_len_target++; /* trailing null */ |
2223 | name_len_target *= 2; | |
50c2f753 | 2224 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2225 | name_len_target = strnlen(fromName, PATH_MAX); |
2226 | name_len_target++; /* trailing null */ | |
2227 | strncpy(data_offset, fromName, name_len_target); | |
2228 | } | |
2229 | ||
2230 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2231 | /* BB find exact max on data count below from sess*/ | |
2232 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2233 | pSMB->SetupCount = 1; | |
2234 | pSMB->Reserved3 = 0; | |
2235 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2236 | byte_count = 3 /* pad */ + params + name_len_target; | |
2237 | pSMB->ParameterCount = cpu_to_le16(params); | |
2238 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2239 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2240 | pSMB->TotalDataCount = pSMB->DataCount; | |
2241 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2242 | pSMB->DataOffset = cpu_to_le16(offset); | |
2243 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2244 | pSMB->Reserved4 = 0; | |
2245 | pSMB->hdr.smb_buf_length += byte_count; | |
2246 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2247 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2248 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2249 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2250 | if (rc) |
1da177e4 | 2251 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); |
1da177e4 LT |
2252 | |
2253 | cifs_buf_release(pSMB); | |
2254 | if (rc == -EAGAIN) | |
2255 | goto createHardLinkRetry; | |
2256 | ||
2257 | return rc; | |
2258 | } | |
2259 | ||
2260 | int | |
2261 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2262 | const char *fromName, const char *toName, | |
737b758c | 2263 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2264 | { |
2265 | int rc = 0; | |
2266 | NT_RENAME_REQ *pSMB = NULL; | |
2267 | RENAME_RSP *pSMBr = NULL; | |
2268 | int bytes_returned; | |
2269 | int name_len, name_len2; | |
2270 | __u16 count; | |
2271 | ||
2272 | cFYI(1, ("In CIFSCreateHardLink")); | |
2273 | winCreateHardLinkRetry: | |
2274 | ||
2275 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2276 | (void **) &pSMBr); | |
2277 | if (rc) | |
2278 | return rc; | |
2279 | ||
2280 | pSMB->SearchAttributes = | |
2281 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2282 | ATTR_DIRECTORY); | |
2283 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2284 | pSMB->ClusterCount = 0; | |
2285 | ||
2286 | pSMB->BufferFormat = 0x04; | |
2287 | ||
2288 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2289 | name_len = | |
b1a45695 | 2290 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2291 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2292 | name_len++; /* trailing null */ |
2293 | name_len *= 2; | |
fcc7c09d JL |
2294 | |
2295 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2296 | pSMB->OldFileName[name_len] = 0x04; | |
2297 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2298 | name_len2 = |
50c2f753 | 2299 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2300 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2301 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2302 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2303 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2304 | name_len = strnlen(fromName, PATH_MAX); |
2305 | name_len++; /* trailing null */ | |
2306 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2307 | name_len2 = strnlen(toName, PATH_MAX); | |
2308 | name_len2++; /* trailing null */ | |
2309 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2310 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2311 | name_len2++; /* trailing null */ | |
2312 | name_len2++; /* signature byte */ | |
2313 | } | |
2314 | ||
2315 | count = 1 /* string type byte */ + name_len + name_len2; | |
2316 | pSMB->hdr.smb_buf_length += count; | |
2317 | pSMB->ByteCount = cpu_to_le16(count); | |
2318 | ||
2319 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2320 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2321 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2322 | if (rc) |
1da177e4 | 2323 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); |
ad7a2926 | 2324 | |
1da177e4 LT |
2325 | cifs_buf_release(pSMB); |
2326 | if (rc == -EAGAIN) | |
2327 | goto winCreateHardLinkRetry; | |
2328 | ||
2329 | return rc; | |
2330 | } | |
2331 | ||
2332 | int | |
2333 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2334 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2335 | const struct nls_table *nls_codepage) |
2336 | { | |
2337 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2338 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2339 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2340 | int rc = 0; | |
2341 | int bytes_returned; | |
2342 | int name_len; | |
2343 | __u16 params, byte_count; | |
460b9696 | 2344 | char *data_start; |
1da177e4 LT |
2345 | |
2346 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
2347 | ||
2348 | querySymLinkRetry: | |
2349 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2350 | (void **) &pSMBr); | |
2351 | if (rc) | |
2352 | return rc; | |
2353 | ||
2354 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2355 | name_len = | |
50c2f753 SF |
2356 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2357 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2358 | name_len++; /* trailing null */ |
2359 | name_len *= 2; | |
50c2f753 | 2360 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2361 | name_len = strnlen(searchName, PATH_MAX); |
2362 | name_len++; /* trailing null */ | |
2363 | strncpy(pSMB->FileName, searchName, name_len); | |
2364 | } | |
2365 | ||
2366 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2367 | pSMB->TotalDataCount = 0; | |
2368 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2369 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2370 | pSMB->MaxSetupCount = 0; |
2371 | pSMB->Reserved = 0; | |
2372 | pSMB->Flags = 0; | |
2373 | pSMB->Timeout = 0; | |
2374 | pSMB->Reserved2 = 0; | |
2375 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2376 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2377 | pSMB->DataCount = 0; |
2378 | pSMB->DataOffset = 0; | |
2379 | pSMB->SetupCount = 1; | |
2380 | pSMB->Reserved3 = 0; | |
2381 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2382 | byte_count = params + 1 /* pad */ ; | |
2383 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2384 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2385 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2386 | pSMB->Reserved4 = 0; | |
2387 | pSMB->hdr.smb_buf_length += byte_count; | |
2388 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2389 | ||
2390 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2391 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2392 | if (rc) { | |
2393 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
2394 | } else { | |
2395 | /* decode response */ | |
2396 | ||
2397 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2398 | /* BB also check enough total bytes returned */ |
460b9696 JL |
2399 | if (rc || (pSMBr->ByteCount < 2)) |
2400 | rc = -EIO; | |
1da177e4 | 2401 | else { |
0e0d2cf3 | 2402 | bool is_unicode; |
460b9696 JL |
2403 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2404 | ||
2405 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2406 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2407 | |
0e0d2cf3 SF |
2408 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2409 | is_unicode = true; | |
2410 | else | |
2411 | is_unicode = false; | |
2412 | ||
737b758c | 2413 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2414 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2415 | is_unicode, nls_codepage); |
8b6427a2 | 2416 | if (!*symlinkinfo) |
460b9696 | 2417 | rc = -ENOMEM; |
1da177e4 LT |
2418 | } |
2419 | } | |
2420 | cifs_buf_release(pSMB); | |
2421 | if (rc == -EAGAIN) | |
2422 | goto querySymLinkRetry; | |
2423 | return rc; | |
2424 | } | |
2425 | ||
c9489779 | 2426 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
2427 | /* Initialize NT TRANSACT SMB into small smb request buffer. |
2428 | This assumes that all NT TRANSACTS that we init here have | |
2429 | total parm and data under about 400 bytes (to fit in small cifs | |
2430 | buffer size), which is the case so far, it easily fits. NB: | |
2431 | Setup words themselves and ByteCount | |
2432 | MaxSetupCount (size of returned setup area) and | |
2433 | MaxParameterCount (returned parms size) must be set by caller */ | |
50c2f753 | 2434 | static int |
b9c7a2bb | 2435 | smb_init_nttransact(const __u16 sub_command, const int setup_count, |
0a4b92c0 | 2436 | const int parm_len, struct cifsTconInfo *tcon, |
50c2f753 | 2437 | void **ret_buf) |
0a4b92c0 SF |
2438 | { |
2439 | int rc; | |
2440 | __u32 temp_offset; | |
50c2f753 | 2441 | struct smb_com_ntransact_req *pSMB; |
0a4b92c0 SF |
2442 | |
2443 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2444 | (void **)&pSMB); | |
2445 | if (rc) | |
2446 | return rc; | |
2447 | *ret_buf = (void *)pSMB; | |
2448 | pSMB->Reserved = 0; | |
2449 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2450 | pSMB->TotalDataCount = 0; | |
2451 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2452 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2453 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2454 | pSMB->DataCount = pSMB->TotalDataCount; | |
2455 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2456 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2457 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2458 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2459 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2460 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2461 | return 0; | |
2462 | } | |
2463 | ||
2464 | static int | |
50c2f753 | 2465 | validate_ntransact(char *buf, char **ppparm, char **ppdata, |
b9c7a2bb | 2466 | __u32 *pparmlen, __u32 *pdatalen) |
0a4b92c0 | 2467 | { |
50c2f753 | 2468 | char *end_of_smb; |
0a4b92c0 | 2469 | __u32 data_count, data_offset, parm_count, parm_offset; |
50c2f753 | 2470 | struct smb_com_ntransact_rsp *pSMBr; |
0a4b92c0 | 2471 | |
630f3f0c SF |
2472 | *pdatalen = 0; |
2473 | *pparmlen = 0; | |
2474 | ||
790fe579 | 2475 | if (buf == NULL) |
0a4b92c0 SF |
2476 | return -EINVAL; |
2477 | ||
2478 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2479 | ||
2480 | /* ByteCount was converted from little endian in SendReceive */ | |
50c2f753 | 2481 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + |
0a4b92c0 SF |
2482 | (char *)&pSMBr->ByteCount; |
2483 | ||
0a4b92c0 SF |
2484 | data_offset = le32_to_cpu(pSMBr->DataOffset); |
2485 | data_count = le32_to_cpu(pSMBr->DataCount); | |
50c2f753 | 2486 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
0a4b92c0 SF |
2487 | parm_count = le32_to_cpu(pSMBr->ParameterCount); |
2488 | ||
2489 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2490 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2491 | ||
2492 | /* should we also check that parm and data areas do not overlap? */ | |
790fe579 SF |
2493 | if (*ppparm > end_of_smb) { |
2494 | cFYI(1, ("parms start after end of smb")); | |
0a4b92c0 | 2495 | return -EINVAL; |
790fe579 SF |
2496 | } else if (parm_count + *ppparm > end_of_smb) { |
2497 | cFYI(1, ("parm end after end of smb")); | |
0a4b92c0 | 2498 | return -EINVAL; |
790fe579 SF |
2499 | } else if (*ppdata > end_of_smb) { |
2500 | cFYI(1, ("data starts after end of smb")); | |
0a4b92c0 | 2501 | return -EINVAL; |
790fe579 | 2502 | } else if (data_count + *ppdata > end_of_smb) { |
26f57364 | 2503 | cFYI(1, ("data %p + count %d (%p) ends after end of smb %p start %p", |
50c2f753 SF |
2504 | *ppdata, data_count, (data_count + *ppdata), |
2505 | end_of_smb, pSMBr)); | |
0a4b92c0 | 2506 | return -EINVAL; |
790fe579 SF |
2507 | } else if (parm_count + data_count > pSMBr->ByteCount) { |
2508 | cFYI(1, ("parm count and data count larger than SMB")); | |
0a4b92c0 SF |
2509 | return -EINVAL; |
2510 | } | |
630f3f0c SF |
2511 | *pdatalen = data_count; |
2512 | *pparmlen = parm_count; | |
0a4b92c0 SF |
2513 | return 0; |
2514 | } | |
2515 | ||
1da177e4 LT |
2516 | int |
2517 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2518 | const unsigned char *searchName, | |
50c2f753 | 2519 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2520 | const struct nls_table *nls_codepage) |
2521 | { | |
2522 | int rc = 0; | |
2523 | int bytes_returned; | |
50c2f753 SF |
2524 | struct smb_com_transaction_ioctl_req *pSMB; |
2525 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 LT |
2526 | |
2527 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
2528 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2529 | (void **) &pSMBr); | |
2530 | if (rc) | |
2531 | return rc; | |
2532 | ||
2533 | pSMB->TotalParameterCount = 0 ; | |
2534 | pSMB->TotalDataCount = 0; | |
2535 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2536 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2537 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2538 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2539 | pSMB->MaxSetupCount = 4; |
2540 | pSMB->Reserved = 0; | |
2541 | pSMB->ParameterOffset = 0; | |
2542 | pSMB->DataCount = 0; | |
2543 | pSMB->DataOffset = 0; | |
2544 | pSMB->SetupCount = 4; | |
2545 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2546 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2547 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2548 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2549 | pSMB->IsRootFlag = 0; | |
2550 | pSMB->Fid = fid; /* file handle always le */ | |
2551 | pSMB->ByteCount = 0; | |
2552 | ||
2553 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2554 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2555 | if (rc) { | |
2556 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
2557 | } else { /* decode response */ | |
2558 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2559 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
afe48c31 | 2560 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) { |
1da177e4 LT |
2561 | /* BB also check enough total bytes returned */ |
2562 | rc = -EIO; /* bad smb */ | |
afe48c31 SF |
2563 | goto qreparse_out; |
2564 | } | |
2565 | if (data_count && (data_count < 2048)) { | |
2566 | char *end_of_smb = 2 /* sizeof byte count */ + | |
2567 | pSMBr->ByteCount + (char *)&pSMBr->ByteCount; | |
1da177e4 | 2568 | |
afe48c31 | 2569 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2570 | (struct reparse_data *) |
2571 | ((char *)&pSMBr->hdr.Protocol | |
2572 | + data_offset); | |
afe48c31 SF |
2573 | if ((char *)reparse_buf >= end_of_smb) { |
2574 | rc = -EIO; | |
2575 | goto qreparse_out; | |
2576 | } | |
2577 | if ((reparse_buf->LinkNamesBuf + | |
2578 | reparse_buf->TargetNameOffset + | |
2579 | reparse_buf->TargetNameLen) > end_of_smb) { | |
2580 | cFYI(1, ("reparse buf beyond SMB")); | |
2581 | rc = -EIO; | |
2582 | goto qreparse_out; | |
2583 | } | |
50c2f753 | 2584 | |
afe48c31 SF |
2585 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2586 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2587 | (reparse_buf->LinkNamesBuf + |
2588 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2589 | buflen, |
2590 | reparse_buf->TargetNameLen, | |
2591 | nls_codepage, 0); | |
2592 | } else { /* ASCII names */ | |
2593 | strncpy(symlinkinfo, | |
2594 | reparse_buf->LinkNamesBuf + | |
2595 | reparse_buf->TargetNameOffset, | |
2596 | min_t(const int, buflen, | |
2597 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2598 | } |
afe48c31 SF |
2599 | } else { |
2600 | rc = -EIO; | |
2601 | cFYI(1, ("Invalid return data count on " | |
2602 | "get reparse info ioctl")); | |
1da177e4 | 2603 | } |
afe48c31 SF |
2604 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2605 | does not go off the end of the buffer */ | |
2606 | cFYI(1, ("readlink result - %s", symlinkinfo)); | |
1da177e4 | 2607 | } |
989c7e51 | 2608 | |
1da177e4 | 2609 | qreparse_out: |
4a6d87f1 | 2610 | cifs_buf_release(pSMB); |
1da177e4 LT |
2611 | |
2612 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2613 | since file handle passed in no longer valid */ | |
2614 | ||
2615 | return rc; | |
2616 | } | |
afe48c31 | 2617 | #endif /* CIFS_EXPERIMENTAL */ |
1da177e4 LT |
2618 | |
2619 | #ifdef CONFIG_CIFS_POSIX | |
2620 | ||
2621 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2622 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2623 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2624 | { |
2625 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2626 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2627 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2628 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
1da177e4 LT |
2629 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ |
2630 | ||
2631 | return; | |
2632 | } | |
2633 | ||
2634 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2635 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2636 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2637 | { |
2638 | int size = 0; | |
2639 | int i; | |
2640 | __u16 count; | |
50c2f753 SF |
2641 | struct cifs_posix_ace *pACE; |
2642 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2643 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2644 | |
2645 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2646 | return -EOPNOTSUPP; | |
2647 | ||
790fe579 | 2648 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2649 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2650 | pACE = &cifs_acl->ace_array[0]; | |
2651 | size = sizeof(struct cifs_posix_acl); | |
2652 | size += sizeof(struct cifs_posix_ace) * count; | |
2653 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2654 | if (size_of_data_area < size) { |
50c2f753 SF |
2655 | cFYI(1, ("bad CIFS POSIX ACL size %d vs. %d", |
2656 | size_of_data_area, size)); | |
1da177e4 LT |
2657 | return -EINVAL; |
2658 | } | |
790fe579 | 2659 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2660 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2661 | size = sizeof(struct cifs_posix_acl); | |
2662 | size += sizeof(struct cifs_posix_ace) * count; | |
2663 | /* skip past access ACEs to get to default ACEs */ | |
2664 | pACE = &cifs_acl->ace_array[count]; | |
2665 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2666 | size += sizeof(struct cifs_posix_ace) * count; | |
2667 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2668 | if (size_of_data_area < size) |
1da177e4 LT |
2669 | return -EINVAL; |
2670 | } else { | |
2671 | /* illegal type */ | |
2672 | return -EINVAL; | |
2673 | } | |
2674 | ||
2675 | size = posix_acl_xattr_size(count); | |
790fe579 | 2676 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2677 | /* used to query ACL EA size */ |
790fe579 | 2678 | } else if (size > buflen) { |
1da177e4 LT |
2679 | return -ERANGE; |
2680 | } else /* buffer big enough */ { | |
ff7feac9 | 2681 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2682 | for (i = 0; i < count ; i++) { |
2683 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2684 | pACE++; | |
1da177e4 LT |
2685 | } |
2686 | } | |
2687 | return size; | |
2688 | } | |
2689 | ||
50c2f753 SF |
2690 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2691 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2692 | { |
2693 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2694 | ||
ff7feac9 SF |
2695 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2696 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2697 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2698 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2699 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2700 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2701 | } else |
ff7feac9 | 2702 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
50c2f753 | 2703 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ |
1da177e4 LT |
2704 | return rc; |
2705 | } | |
2706 | ||
2707 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2708 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2709 | const int buflen, const int acl_type) | |
1da177e4 LT |
2710 | { |
2711 | __u16 rc = 0; | |
50c2f753 SF |
2712 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2713 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2714 | int count; |
2715 | int i; | |
2716 | ||
790fe579 | 2717 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2718 | return 0; |
2719 | ||
2720 | count = posix_acl_xattr_count((size_t)buflen); | |
c18c842b | 2721 | cFYI(1, ("setting acl with %d entries from buf of length %d and " |
63135e08 | 2722 | "version of %d", |
ff7feac9 | 2723 | count, buflen, le32_to_cpu(local_acl->a_version))); |
790fe579 | 2724 | if (le32_to_cpu(local_acl->a_version) != 2) { |
50c2f753 | 2725 | cFYI(1, ("unknown POSIX ACL version %d", |
ff7feac9 | 2726 | le32_to_cpu(local_acl->a_version))); |
1da177e4 LT |
2727 | return 0; |
2728 | } | |
2729 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2730 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2731 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2732 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2733 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2734 | else { |
50c2f753 | 2735 | cFYI(1, ("unknown ACL type %d", acl_type)); |
1da177e4 LT |
2736 | return 0; |
2737 | } | |
50c2f753 | 2738 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2739 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2740 | &local_acl->a_entries[i]); | |
790fe579 | 2741 | if (rc != 0) { |
1da177e4 LT |
2742 | /* ACE not converted */ |
2743 | break; | |
2744 | } | |
2745 | } | |
790fe579 | 2746 | if (rc == 0) { |
1da177e4 LT |
2747 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2748 | rc += sizeof(struct cifs_posix_acl); | |
2749 | /* BB add check to make sure ACL does not overflow SMB */ | |
2750 | } | |
2751 | return rc; | |
2752 | } | |
2753 | ||
2754 | int | |
2755 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2756 | const unsigned char *searchName, |
2757 | char *acl_inf, const int buflen, const int acl_type, | |
2758 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2759 | { |
2760 | /* SMB_QUERY_POSIX_ACL */ | |
2761 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2762 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2763 | int rc = 0; | |
2764 | int bytes_returned; | |
2765 | int name_len; | |
2766 | __u16 params, byte_count; | |
50c2f753 | 2767 | |
1da177e4 LT |
2768 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); |
2769 | ||
2770 | queryAclRetry: | |
2771 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2772 | (void **) &pSMBr); | |
2773 | if (rc) | |
2774 | return rc; | |
50c2f753 | 2775 | |
1da177e4 LT |
2776 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2777 | name_len = | |
50c2f753 | 2778 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2779 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2780 | name_len++; /* trailing null */ |
2781 | name_len *= 2; | |
2782 | pSMB->FileName[name_len] = 0; | |
2783 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2784 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2785 | name_len = strnlen(searchName, PATH_MAX); |
2786 | name_len++; /* trailing null */ | |
2787 | strncpy(pSMB->FileName, searchName, name_len); | |
2788 | } | |
2789 | ||
2790 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2791 | pSMB->TotalDataCount = 0; | |
2792 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2793 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2794 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2795 | pSMB->MaxSetupCount = 0; | |
2796 | pSMB->Reserved = 0; | |
2797 | pSMB->Flags = 0; | |
2798 | pSMB->Timeout = 0; | |
2799 | pSMB->Reserved2 = 0; | |
2800 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2801 | offsetof(struct smb_com_transaction2_qpi_req, |
2802 | InformationLevel) - 4); | |
1da177e4 LT |
2803 | pSMB->DataCount = 0; |
2804 | pSMB->DataOffset = 0; | |
2805 | pSMB->SetupCount = 1; | |
2806 | pSMB->Reserved3 = 0; | |
2807 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2808 | byte_count = params + 1 /* pad */ ; | |
2809 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2810 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2811 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2812 | pSMB->Reserved4 = 0; | |
2813 | pSMB->hdr.smb_buf_length += byte_count; | |
2814 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2815 | ||
2816 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2817 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2818 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 LT |
2819 | if (rc) { |
2820 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
2821 | } else { | |
2822 | /* decode response */ | |
50c2f753 | 2823 | |
1da177e4 LT |
2824 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2825 | if (rc || (pSMBr->ByteCount < 2)) | |
2826 | /* BB also check enough total bytes returned */ | |
2827 | rc = -EIO; /* bad smb */ | |
2828 | else { | |
2829 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2830 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2831 | rc = cifs_copy_posix_acl(acl_inf, | |
2832 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2833 | buflen, acl_type, count); |
1da177e4 LT |
2834 | } |
2835 | } | |
2836 | cifs_buf_release(pSMB); | |
2837 | if (rc == -EAGAIN) | |
2838 | goto queryAclRetry; | |
2839 | return rc; | |
2840 | } | |
2841 | ||
2842 | int | |
2843 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2844 | const unsigned char *fileName, |
2845 | const char *local_acl, const int buflen, | |
2846 | const int acl_type, | |
2847 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2848 | { |
2849 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2850 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2851 | char *parm_data; | |
2852 | int name_len; | |
2853 | int rc = 0; | |
2854 | int bytes_returned = 0; | |
2855 | __u16 params, byte_count, data_count, param_offset, offset; | |
2856 | ||
2857 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2858 | setAclRetry: | |
2859 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2860 | (void **) &pSMBr); |
1da177e4 LT |
2861 | if (rc) |
2862 | return rc; | |
2863 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2864 | name_len = | |
50c2f753 | 2865 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2866 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2867 | name_len++; /* trailing null */ |
2868 | name_len *= 2; | |
50c2f753 | 2869 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2870 | name_len = strnlen(fileName, PATH_MAX); |
2871 | name_len++; /* trailing null */ | |
2872 | strncpy(pSMB->FileName, fileName, name_len); | |
2873 | } | |
2874 | params = 6 + name_len; | |
2875 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2876 | /* BB find max SMB size from sess */ |
2877 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2878 | pSMB->MaxSetupCount = 0; |
2879 | pSMB->Reserved = 0; | |
2880 | pSMB->Flags = 0; | |
2881 | pSMB->Timeout = 0; | |
2882 | pSMB->Reserved2 = 0; | |
2883 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2884 | InformationLevel) - 4; |
1da177e4 LT |
2885 | offset = param_offset + params; |
2886 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2887 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2888 | ||
2889 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2890 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2891 | |
790fe579 | 2892 | if (data_count == 0) { |
1da177e4 LT |
2893 | rc = -EOPNOTSUPP; |
2894 | goto setACLerrorExit; | |
2895 | } | |
2896 | pSMB->DataOffset = cpu_to_le16(offset); | |
2897 | pSMB->SetupCount = 1; | |
2898 | pSMB->Reserved3 = 0; | |
2899 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2900 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2901 | byte_count = 3 /* pad */ + params + data_count; | |
2902 | pSMB->DataCount = cpu_to_le16(data_count); | |
2903 | pSMB->TotalDataCount = pSMB->DataCount; | |
2904 | pSMB->ParameterCount = cpu_to_le16(params); | |
2905 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2906 | pSMB->Reserved4 = 0; | |
2907 | pSMB->hdr.smb_buf_length += byte_count; | |
2908 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2909 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2910 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2911 | if (rc) |
1da177e4 | 2912 | cFYI(1, ("Set POSIX ACL returned %d", rc)); |
1da177e4 LT |
2913 | |
2914 | setACLerrorExit: | |
2915 | cifs_buf_release(pSMB); | |
2916 | if (rc == -EAGAIN) | |
2917 | goto setAclRetry; | |
2918 | return rc; | |
2919 | } | |
2920 | ||
f654bac2 SF |
2921 | /* BB fix tabs in this function FIXME BB */ |
2922 | int | |
2923 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 2924 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 2925 | { |
50c2f753 SF |
2926 | int rc = 0; |
2927 | struct smb_t2_qfi_req *pSMB = NULL; | |
2928 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2929 | int bytes_returned; | |
2930 | __u16 params, byte_count; | |
f654bac2 | 2931 | |
790fe579 SF |
2932 | cFYI(1, ("In GetExtAttr")); |
2933 | if (tcon == NULL) | |
2934 | return -ENODEV; | |
f654bac2 SF |
2935 | |
2936 | GetExtAttrRetry: | |
790fe579 SF |
2937 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2938 | (void **) &pSMBr); | |
2939 | if (rc) | |
2940 | return rc; | |
f654bac2 | 2941 | |
ad7a2926 | 2942 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
2943 | pSMB->t2.TotalDataCount = 0; |
2944 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2945 | /* BB find exact max data count below from sess structure BB */ | |
2946 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2947 | pSMB->t2.MaxSetupCount = 0; | |
2948 | pSMB->t2.Reserved = 0; | |
2949 | pSMB->t2.Flags = 0; | |
2950 | pSMB->t2.Timeout = 0; | |
2951 | pSMB->t2.Reserved2 = 0; | |
2952 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
2953 | Fid) - 4); | |
2954 | pSMB->t2.DataCount = 0; | |
2955 | pSMB->t2.DataOffset = 0; | |
2956 | pSMB->t2.SetupCount = 1; | |
2957 | pSMB->t2.Reserved3 = 0; | |
2958 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
2959 | byte_count = params + 1 /* pad */ ; | |
2960 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
2961 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
2962 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
2963 | pSMB->Pad = 0; | |
f654bac2 | 2964 | pSMB->Fid = netfid; |
790fe579 SF |
2965 | pSMB->hdr.smb_buf_length += byte_count; |
2966 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
2967 | ||
2968 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2969 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2970 | if (rc) { | |
2971 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
2972 | } else { | |
2973 | /* decode response */ | |
2974 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2975 | if (rc || (pSMBr->ByteCount < 2)) | |
2976 | /* BB also check enough total bytes returned */ | |
2977 | /* If rc should we check for EOPNOSUPP and | |
2978 | disable the srvino flag? or in caller? */ | |
2979 | rc = -EIO; /* bad smb */ | |
2980 | else { | |
2981 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2982 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2983 | struct file_chattr_info *pfinfo; | |
2984 | /* BB Do we need a cast or hash here ? */ | |
2985 | if (count != 16) { | |
2986 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
2987 | rc = -EIO; | |
2988 | goto GetExtAttrOut; | |
2989 | } | |
2990 | pfinfo = (struct file_chattr_info *) | |
2991 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
2992 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 2993 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
2994 | } |
2995 | } | |
f654bac2 | 2996 | GetExtAttrOut: |
790fe579 SF |
2997 | cifs_buf_release(pSMB); |
2998 | if (rc == -EAGAIN) | |
2999 | goto GetExtAttrRetry; | |
3000 | return rc; | |
f654bac2 SF |
3001 | } |
3002 | ||
f654bac2 | 3003 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3004 | |
297647c2 | 3005 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
3006 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3007 | int | |
3008 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3009 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3010 | { |
3011 | int rc = 0; | |
3012 | int buf_type = 0; | |
ad7a2926 | 3013 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3014 | struct kvec iov[1]; |
3015 | ||
3016 | cFYI(1, ("GetCifsACL")); | |
3017 | ||
630f3f0c SF |
3018 | *pbuflen = 0; |
3019 | *acl_inf = NULL; | |
3020 | ||
b9c7a2bb | 3021 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3022 | 8 /* parm len */, tcon, (void **) &pSMB); |
3023 | if (rc) | |
3024 | return rc; | |
3025 | ||
3026 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3027 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3028 | pSMB->MaxSetupCount = 0; | |
3029 | pSMB->Fid = fid; /* file handle always le */ | |
3030 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3031 | CIFS_ACL_DACL); | |
3032 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3033 | pSMB->hdr.smb_buf_length += 11; | |
3034 | iov[0].iov_base = (char *)pSMB; | |
3035 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3036 | ||
a761ac57 | 3037 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
133672ef | 3038 | CIFS_STD_OP); |
0a4b92c0 SF |
3039 | cifs_stats_inc(&tcon->num_acl_get); |
3040 | if (rc) { | |
3041 | cFYI(1, ("Send error in QuerySecDesc = %d", rc)); | |
3042 | } else { /* decode response */ | |
ad7a2926 | 3043 | __le32 *parm; |
630f3f0c SF |
3044 | __u32 parm_len; |
3045 | __u32 acl_len; | |
50c2f753 | 3046 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3047 | char *pdata; |
0a4b92c0 SF |
3048 | |
3049 | /* validate_nttransact */ | |
50c2f753 | 3050 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3051 | &pdata, &parm_len, pbuflen); |
790fe579 | 3052 | if (rc) |
0a4b92c0 SF |
3053 | goto qsec_out; |
3054 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3055 | ||
630f3f0c | 3056 | cFYI(1, ("smb %p parm %p data %p", pSMBr, parm, *acl_inf)); |
0a4b92c0 SF |
3057 | |
3058 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3059 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3060 | *pbuflen = 0; |
0a4b92c0 SF |
3061 | goto qsec_out; |
3062 | } | |
3063 | ||
3064 | /* BB check that data area is minimum length and as big as acl_len */ | |
3065 | ||
af6f4612 | 3066 | acl_len = le32_to_cpu(*parm); |
630f3f0c SF |
3067 | if (acl_len != *pbuflen) { |
3068 | cERROR(1, ("acl length %d does not match %d", | |
3069 | acl_len, *pbuflen)); | |
3070 | if (*pbuflen > acl_len) | |
3071 | *pbuflen = acl_len; | |
3072 | } | |
0a4b92c0 | 3073 | |
630f3f0c SF |
3074 | /* check if buffer is big enough for the acl |
3075 | header followed by the smallest SID */ | |
3076 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3077 | (*pbuflen >= 64 * 1024)) { | |
3078 | cERROR(1, ("bad acl length %d", *pbuflen)); | |
3079 | rc = -EINVAL; | |
3080 | *pbuflen = 0; | |
3081 | } else { | |
3082 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3083 | if (*acl_inf == NULL) { | |
3084 | *pbuflen = 0; | |
3085 | rc = -ENOMEM; | |
3086 | } | |
3087 | memcpy(*acl_inf, pdata, *pbuflen); | |
3088 | } | |
0a4b92c0 SF |
3089 | } |
3090 | qsec_out: | |
790fe579 | 3091 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3092 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3093 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3094 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3095 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3096 | return rc; |
3097 | } | |
97837582 SF |
3098 | |
3099 | int | |
3100 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3101 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3102 | { | |
3103 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3104 | int rc = 0; | |
3105 | int bytes_returned = 0; | |
3106 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3107 | NTRANSACT_RSP *pSMBr = NULL; | |
3108 | ||
3109 | setCifsAclRetry: | |
3110 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3111 | (void **) &pSMBr); | |
3112 | if (rc) | |
3113 | return (rc); | |
3114 | ||
3115 | pSMB->MaxSetupCount = 0; | |
3116 | pSMB->Reserved = 0; | |
3117 | ||
3118 | param_count = 8; | |
3119 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3120 | data_count = acllen; | |
3121 | data_offset = param_offset + param_count; | |
3122 | byte_count = 3 /* pad */ + param_count; | |
3123 | ||
3124 | pSMB->DataCount = cpu_to_le32(data_count); | |
3125 | pSMB->TotalDataCount = pSMB->DataCount; | |
3126 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3127 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3128 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3129 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3130 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3131 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3132 | pSMB->SetupCount = 0; | |
3133 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3134 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3135 | ||
3136 | pSMB->Fid = fid; /* file handle always le */ | |
3137 | pSMB->Reserved2 = 0; | |
3138 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3139 | ||
3140 | if (pntsd && acllen) { | |
3141 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3142 | (char *) pntsd, | |
3143 | acllen); | |
3144 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3145 | ||
3146 | } else | |
3147 | pSMB->hdr.smb_buf_length += byte_count; | |
3148 | ||
3149 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3150 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3151 | ||
3152 | cFYI(1, ("SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc)); | |
3153 | if (rc) | |
3154 | cFYI(1, ("Set CIFS ACL returned %d", rc)); | |
3155 | cifs_buf_release(pSMB); | |
3156 | ||
3157 | if (rc == -EAGAIN) | |
3158 | goto setCifsAclRetry; | |
3159 | ||
3160 | return (rc); | |
3161 | } | |
3162 | ||
297647c2 | 3163 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
0a4b92c0 | 3164 | |
6b8edfe0 SF |
3165 | /* Legacy Query Path Information call for lookup to old servers such |
3166 | as Win9x/WinME */ | |
3167 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3168 | const unsigned char *searchName, |
3169 | FILE_ALL_INFO *pFinfo, | |
3170 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3171 | { |
ad7a2926 SF |
3172 | QUERY_INFORMATION_REQ *pSMB; |
3173 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3174 | int rc = 0; |
3175 | int bytes_returned; | |
3176 | int name_len; | |
3177 | ||
50c2f753 | 3178 | cFYI(1, ("In SMBQPath path %s", searchName)); |
6b8edfe0 SF |
3179 | QInfRetry: |
3180 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3181 | (void **) &pSMBr); |
6b8edfe0 SF |
3182 | if (rc) |
3183 | return rc; | |
3184 | ||
3185 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3186 | name_len = | |
50c2f753 SF |
3187 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3188 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3189 | name_len++; /* trailing null */ |
3190 | name_len *= 2; | |
50c2f753 | 3191 | } else { |
6b8edfe0 SF |
3192 | name_len = strnlen(searchName, PATH_MAX); |
3193 | name_len++; /* trailing null */ | |
3194 | strncpy(pSMB->FileName, searchName, name_len); | |
3195 | } | |
3196 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3197 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3198 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3199 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3200 | ||
3201 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3202 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 SF |
3203 | if (rc) { |
3204 | cFYI(1, ("Send error in QueryInfo = %d", rc)); | |
ad7a2926 | 3205 | } else if (pFinfo) { |
1bd5bbcb SF |
3206 | struct timespec ts; |
3207 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3208 | |
3209 | /* decode response */ | |
1bd5bbcb | 3210 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3211 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3212 | ts.tv_nsec = 0; |
3213 | ts.tv_sec = time; | |
3214 | /* decode time fields */ | |
733f99ac | 3215 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3216 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3217 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3218 | pFinfo->AllocationSize = |
3219 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3220 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3221 | pFinfo->Attributes = | |
3222 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3223 | } else |
3224 | rc = -EIO; /* bad buffer passed in */ | |
3225 | ||
3226 | cifs_buf_release(pSMB); | |
3227 | ||
3228 | if (rc == -EAGAIN) | |
3229 | goto QInfRetry; | |
3230 | ||
3231 | return rc; | |
3232 | } | |
3233 | ||
bcd5357f JL |
3234 | int |
3235 | CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3236 | u16 netfid, FILE_ALL_INFO *pFindData) | |
3237 | { | |
3238 | struct smb_t2_qfi_req *pSMB = NULL; | |
3239 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3240 | int rc = 0; | |
3241 | int bytes_returned; | |
3242 | __u16 params, byte_count; | |
3243 | ||
3244 | QFileInfoRetry: | |
3245 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3246 | (void **) &pSMBr); | |
3247 | if (rc) | |
3248 | return rc; | |
3249 | ||
3250 | params = 2 /* level */ + 2 /* fid */; | |
3251 | pSMB->t2.TotalDataCount = 0; | |
3252 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3253 | /* BB find exact max data count below from sess structure BB */ | |
3254 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3255 | pSMB->t2.MaxSetupCount = 0; | |
3256 | pSMB->t2.Reserved = 0; | |
3257 | pSMB->t2.Flags = 0; | |
3258 | pSMB->t2.Timeout = 0; | |
3259 | pSMB->t2.Reserved2 = 0; | |
3260 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3261 | Fid) - 4); | |
3262 | pSMB->t2.DataCount = 0; | |
3263 | pSMB->t2.DataOffset = 0; | |
3264 | pSMB->t2.SetupCount = 1; | |
3265 | pSMB->t2.Reserved3 = 0; | |
3266 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3267 | byte_count = params + 1 /* pad */ ; | |
3268 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3269 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3270 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3271 | pSMB->Pad = 0; | |
3272 | pSMB->Fid = netfid; | |
3273 | pSMB->hdr.smb_buf_length += byte_count; | |
6b8edfe0 | 3274 | |
bcd5357f JL |
3275 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3276 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3277 | if (rc) { | |
3278 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3279 | } else { /* decode response */ | |
3280 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3281 | |
bcd5357f JL |
3282 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3283 | rc = -EIO; | |
3284 | else if (pSMBr->ByteCount < 40) | |
3285 | rc = -EIO; /* bad smb */ | |
3286 | else if (pFindData) { | |
3287 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3288 | memcpy((char *) pFindData, | |
3289 | (char *) &pSMBr->hdr.Protocol + | |
3290 | data_offset, sizeof(FILE_ALL_INFO)); | |
3291 | } else | |
3292 | rc = -ENOMEM; | |
3293 | } | |
3294 | cifs_buf_release(pSMB); | |
3295 | if (rc == -EAGAIN) | |
3296 | goto QFileInfoRetry; | |
6b8edfe0 | 3297 | |
bcd5357f JL |
3298 | return rc; |
3299 | } | |
6b8edfe0 | 3300 | |
1da177e4 LT |
3301 | int |
3302 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3303 | const unsigned char *searchName, | |
ad7a2926 | 3304 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3305 | int legacy /* old style infolevel */, |
737b758c | 3306 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3307 | { |
3308 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3309 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3310 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3311 | int rc = 0; | |
3312 | int bytes_returned; | |
3313 | int name_len; | |
3314 | __u16 params, byte_count; | |
3315 | ||
3316 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
3317 | QPathInfoRetry: | |
3318 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3319 | (void **) &pSMBr); | |
3320 | if (rc) | |
3321 | return rc; | |
3322 | ||
3323 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3324 | name_len = | |
50c2f753 | 3325 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3326 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3327 | name_len++; /* trailing null */ |
3328 | name_len *= 2; | |
50c2f753 | 3329 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3330 | name_len = strnlen(searchName, PATH_MAX); |
3331 | name_len++; /* trailing null */ | |
3332 | strncpy(pSMB->FileName, searchName, name_len); | |
3333 | } | |
3334 | ||
50c2f753 | 3335 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3336 | pSMB->TotalDataCount = 0; |
3337 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3338 | /* BB find exact max SMB PDU from sess structure BB */ |
3339 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3340 | pSMB->MaxSetupCount = 0; |
3341 | pSMB->Reserved = 0; | |
3342 | pSMB->Flags = 0; | |
3343 | pSMB->Timeout = 0; | |
3344 | pSMB->Reserved2 = 0; | |
3345 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3346 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3347 | pSMB->DataCount = 0; |
3348 | pSMB->DataOffset = 0; | |
3349 | pSMB->SetupCount = 1; | |
3350 | pSMB->Reserved3 = 0; | |
3351 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3352 | byte_count = params + 1 /* pad */ ; | |
3353 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3354 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3355 | if (legacy) |
acf1a1b1 SF |
3356 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3357 | else | |
3358 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3359 | pSMB->Reserved4 = 0; |
3360 | pSMB->hdr.smb_buf_length += byte_count; | |
3361 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3362 | ||
3363 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3364 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3365 | if (rc) { | |
3366 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3367 | } else { /* decode response */ | |
3368 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3369 | ||
acf1a1b1 SF |
3370 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3371 | rc = -EIO; | |
50c2f753 | 3372 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3373 | rc = -EIO; /* bad smb */ |
790fe579 | 3374 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3375 | rc = -EIO; /* 24 or 26 expected but we do not read |
3376 | last field */ | |
3377 | else if (pFindData) { | |
acf1a1b1 | 3378 | int size; |
1da177e4 | 3379 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3380 | |
3381 | /* On legacy responses we do not read the last field, | |
3382 | EAsize, fortunately since it varies by subdialect and | |
3383 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3384 | bytes depending but we don't care here */ | |
3385 | if (legacy) | |
acf1a1b1 SF |
3386 | size = sizeof(FILE_INFO_STANDARD); |
3387 | else | |
3388 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3389 | memcpy((char *) pFindData, |
3390 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3391 | data_offset, size); |
1da177e4 LT |
3392 | } else |
3393 | rc = -ENOMEM; | |
3394 | } | |
3395 | cifs_buf_release(pSMB); | |
3396 | if (rc == -EAGAIN) | |
3397 | goto QPathInfoRetry; | |
3398 | ||
3399 | return rc; | |
3400 | } | |
3401 | ||
c8634fd3 JL |
3402 | int |
3403 | CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3404 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) | |
3405 | { | |
3406 | struct smb_t2_qfi_req *pSMB = NULL; | |
3407 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3408 | int rc = 0; | |
3409 | int bytes_returned; | |
3410 | __u16 params, byte_count; | |
3411 | ||
3412 | UnixQFileInfoRetry: | |
3413 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3414 | (void **) &pSMBr); | |
3415 | if (rc) | |
3416 | return rc; | |
3417 | ||
3418 | params = 2 /* level */ + 2 /* fid */; | |
3419 | pSMB->t2.TotalDataCount = 0; | |
3420 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3421 | /* BB find exact max data count below from sess structure BB */ | |
3422 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3423 | pSMB->t2.MaxSetupCount = 0; | |
3424 | pSMB->t2.Reserved = 0; | |
3425 | pSMB->t2.Flags = 0; | |
3426 | pSMB->t2.Timeout = 0; | |
3427 | pSMB->t2.Reserved2 = 0; | |
3428 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3429 | Fid) - 4); | |
3430 | pSMB->t2.DataCount = 0; | |
3431 | pSMB->t2.DataOffset = 0; | |
3432 | pSMB->t2.SetupCount = 1; | |
3433 | pSMB->t2.Reserved3 = 0; | |
3434 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3435 | byte_count = params + 1 /* pad */ ; | |
3436 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3437 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3438 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3439 | pSMB->Pad = 0; | |
3440 | pSMB->Fid = netfid; | |
3441 | pSMB->hdr.smb_buf_length += byte_count; | |
3442 | ||
3443 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3444 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3445 | if (rc) { | |
3446 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3447 | } else { /* decode response */ | |
3448 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3449 | ||
3450 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
3451 | cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n" | |
3452 | "Unix Extensions can be disabled on mount " | |
3453 | "by specifying the nosfu mount option.")); | |
3454 | rc = -EIO; /* bad smb */ | |
3455 | } else { | |
3456 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3457 | memcpy((char *) pFindData, | |
3458 | (char *) &pSMBr->hdr.Protocol + | |
3459 | data_offset, | |
3460 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3461 | } | |
3462 | } | |
3463 | ||
3464 | cifs_buf_release(pSMB); | |
3465 | if (rc == -EAGAIN) | |
3466 | goto UnixQFileInfoRetry; | |
3467 | ||
3468 | return rc; | |
3469 | } | |
3470 | ||
1da177e4 LT |
3471 | int |
3472 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3473 | const unsigned char *searchName, | |
582d21e5 | 3474 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3475 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3476 | { |
3477 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3478 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3479 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3480 | int rc = 0; | |
3481 | int bytes_returned = 0; | |
3482 | int name_len; | |
3483 | __u16 params, byte_count; | |
3484 | ||
3485 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
3486 | UnixQPathInfoRetry: | |
3487 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3488 | (void **) &pSMBr); | |
3489 | if (rc) | |
3490 | return rc; | |
3491 | ||
3492 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3493 | name_len = | |
b1a45695 | 3494 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3495 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3496 | name_len++; /* trailing null */ |
3497 | name_len *= 2; | |
50c2f753 | 3498 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3499 | name_len = strnlen(searchName, PATH_MAX); |
3500 | name_len++; /* trailing null */ | |
3501 | strncpy(pSMB->FileName, searchName, name_len); | |
3502 | } | |
3503 | ||
50c2f753 | 3504 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3505 | pSMB->TotalDataCount = 0; |
3506 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3507 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3508 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3509 | pSMB->MaxSetupCount = 0; |
3510 | pSMB->Reserved = 0; | |
3511 | pSMB->Flags = 0; | |
3512 | pSMB->Timeout = 0; | |
3513 | pSMB->Reserved2 = 0; | |
3514 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3515 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3516 | pSMB->DataCount = 0; |
3517 | pSMB->DataOffset = 0; | |
3518 | pSMB->SetupCount = 1; | |
3519 | pSMB->Reserved3 = 0; | |
3520 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3521 | byte_count = params + 1 /* pad */ ; | |
3522 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3523 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3524 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3525 | pSMB->Reserved4 = 0; | |
3526 | pSMB->hdr.smb_buf_length += byte_count; | |
3527 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3528 | ||
3529 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3530 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3531 | if (rc) { | |
3532 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3533 | } else { /* decode response */ | |
3534 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3535 | ||
3536 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
1e71f25d SF |
3537 | cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n" |
3538 | "Unix Extensions can be disabled on mount " | |
3539 | "by specifying the nosfu mount option.")); | |
1da177e4 LT |
3540 | rc = -EIO; /* bad smb */ |
3541 | } else { | |
3542 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3543 | memcpy((char *) pFindData, | |
3544 | (char *) &pSMBr->hdr.Protocol + | |
3545 | data_offset, | |
630f3f0c | 3546 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3547 | } |
3548 | } | |
3549 | cifs_buf_release(pSMB); | |
3550 | if (rc == -EAGAIN) | |
3551 | goto UnixQPathInfoRetry; | |
3552 | ||
3553 | return rc; | |
3554 | } | |
3555 | ||
1da177e4 LT |
3556 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3557 | int | |
3558 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3559 | const char *searchName, |
1da177e4 | 3560 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3561 | __u16 *pnetfid, |
3562 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3563 | { |
3564 | /* level 257 SMB_ */ | |
3565 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3566 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3567 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3568 | int rc = 0; |
3569 | int bytes_returned = 0; | |
3570 | int name_len; | |
3571 | __u16 params, byte_count; | |
3572 | ||
50c2f753 | 3573 | cFYI(1, ("In FindFirst for %s", searchName)); |
1da177e4 LT |
3574 | |
3575 | findFirstRetry: | |
3576 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3577 | (void **) &pSMBr); | |
3578 | if (rc) | |
3579 | return rc; | |
3580 | ||
3581 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3582 | name_len = | |
50c2f753 | 3583 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3584 | PATH_MAX, nls_codepage, remap); |
3585 | /* We can not add the asterik earlier in case | |
3586 | it got remapped to 0xF03A as if it were part of the | |
3587 | directory name instead of a wildcard */ | |
1da177e4 | 3588 | name_len *= 2; |
ac67055e | 3589 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3590 | pSMB->FileName[name_len+1] = 0; |
3591 | pSMB->FileName[name_len+2] = '*'; | |
3592 | pSMB->FileName[name_len+3] = 0; | |
3593 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3594 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3595 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3596 | name_len += 2; |
1da177e4 LT |
3597 | } else { /* BB add check for overrun of SMB buf BB */ |
3598 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3599 | /* BB fix here and in unicode clause above ie |
790fe579 | 3600 | if (name_len > buffersize-header) |
1da177e4 LT |
3601 | free buffer exit; BB */ |
3602 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3603 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3604 | pSMB->FileName[name_len+1] = '*'; |
3605 | pSMB->FileName[name_len+2] = 0; | |
3606 | name_len += 3; | |
1da177e4 LT |
3607 | } |
3608 | ||
3609 | params = 12 + name_len /* includes null */ ; | |
3610 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3611 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3612 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3613 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3614 | pSMB->MaxSetupCount = 0; | |
3615 | pSMB->Reserved = 0; | |
3616 | pSMB->Flags = 0; | |
3617 | pSMB->Timeout = 0; | |
3618 | pSMB->Reserved2 = 0; | |
3619 | byte_count = params + 1 /* pad */ ; | |
3620 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3621 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3622 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3623 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3624 | - 4); | |
1da177e4 LT |
3625 | pSMB->DataCount = 0; |
3626 | pSMB->DataOffset = 0; | |
3627 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3628 | pSMB->Reserved3 = 0; | |
3629 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3630 | pSMB->SearchAttributes = | |
3631 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3632 | ATTR_DIRECTORY); | |
50c2f753 SF |
3633 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3634 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3635 | CIFS_SEARCH_RETURN_RESUME); |
3636 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3637 | ||
3638 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3639 | pSMB->SearchStorageType = 0; | |
3640 | pSMB->hdr.smb_buf_length += byte_count; | |
3641 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3642 | ||
3643 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3644 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3645 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3646 | |
88274815 SF |
3647 | if (rc) {/* BB add logic to retry regular search if Unix search |
3648 | rejected unexpectedly by server */ | |
1da177e4 LT |
3649 | /* BB Add code to handle unsupported level rc */ |
3650 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
1982c344 | 3651 | |
88274815 | 3652 | cifs_buf_release(pSMB); |
1da177e4 LT |
3653 | |
3654 | /* BB eventually could optimize out free and realloc of buf */ | |
3655 | /* for this case */ | |
3656 | if (rc == -EAGAIN) | |
3657 | goto findFirstRetry; | |
3658 | } else { /* decode response */ | |
3659 | /* BB remember to free buffer if error BB */ | |
3660 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3661 | if (rc == 0) { |
b77d753c SF |
3662 | unsigned int lnoff; |
3663 | ||
1da177e4 | 3664 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3665 | psrch_inf->unicode = true; |
1da177e4 | 3666 | else |
4b18f2a9 | 3667 | psrch_inf->unicode = false; |
1da177e4 LT |
3668 | |
3669 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3670 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3671 | psrch_inf->srch_entries_start = |
3672 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3673 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3674 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3675 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3676 | ||
790fe579 | 3677 | if (parms->EndofSearch) |
4b18f2a9 | 3678 | psrch_inf->endOfSearch = true; |
1da177e4 | 3679 | else |
4b18f2a9 | 3680 | psrch_inf->endOfSearch = false; |
1da177e4 | 3681 | |
50c2f753 SF |
3682 | psrch_inf->entries_in_buffer = |
3683 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3684 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3685 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3686 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3687 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3688 | lnoff) { | |
3689 | cERROR(1, ("ignoring corrupt resume name")); | |
3690 | psrch_inf->last_entry = NULL; | |
3691 | return rc; | |
3692 | } | |
3693 | ||
0752f152 | 3694 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3695 | lnoff; |
3696 | ||
1da177e4 LT |
3697 | *pnetfid = parms->SearchHandle; |
3698 | } else { | |
3699 | cifs_buf_release(pSMB); | |
3700 | } | |
3701 | } | |
3702 | ||
3703 | return rc; | |
3704 | } | |
3705 | ||
3706 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3707 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3708 | { |
3709 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3710 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3711 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3712 | char *response_data; |
3713 | int rc = 0; | |
3714 | int bytes_returned, name_len; | |
3715 | __u16 params, byte_count; | |
3716 | ||
3717 | cFYI(1, ("In FindNext")); | |
3718 | ||
4b18f2a9 | 3719 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3720 | return -ENOENT; |
3721 | ||
3722 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3723 | (void **) &pSMBr); | |
3724 | if (rc) | |
3725 | return rc; | |
3726 | ||
50c2f753 | 3727 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3728 | byte_count = 0; |
3729 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3730 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3731 | pSMB->MaxDataCount = | |
50c2f753 SF |
3732 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3733 | 0xFFFFFF00); | |
1da177e4 LT |
3734 | pSMB->MaxSetupCount = 0; |
3735 | pSMB->Reserved = 0; | |
3736 | pSMB->Flags = 0; | |
3737 | pSMB->Timeout = 0; | |
3738 | pSMB->Reserved2 = 0; | |
3739 | pSMB->ParameterOffset = cpu_to_le16( | |
3740 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3741 | pSMB->DataCount = 0; | |
3742 | pSMB->DataOffset = 0; | |
3743 | pSMB->SetupCount = 1; | |
3744 | pSMB->Reserved3 = 0; | |
3745 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3746 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3747 | pSMB->SearchCount = | |
630f3f0c | 3748 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3749 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3750 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3751 | pSMB->SearchFlags = | |
3752 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3753 | ||
3754 | name_len = psrch_inf->resume_name_len; | |
3755 | params += name_len; | |
790fe579 | 3756 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3757 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3758 | byte_count += name_len; | |
ef6724e3 SF |
3759 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3760 | pSMB->ResumeFileName[name_len] = 0; | |
3761 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3762 | } else { |
3763 | rc = -EINVAL; | |
3764 | goto FNext2_err_exit; | |
3765 | } | |
3766 | byte_count = params + 1 /* pad */ ; | |
3767 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3768 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3769 | pSMB->hdr.smb_buf_length += byte_count; | |
3770 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3771 | |
1da177e4 LT |
3772 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3773 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3774 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3775 | if (rc) { |
3776 | if (rc == -EBADF) { | |
4b18f2a9 | 3777 | psrch_inf->endOfSearch = true; |
6353450a | 3778 | cifs_buf_release(pSMB); |
50c2f753 | 3779 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 LT |
3780 | } else |
3781 | cFYI(1, ("FindNext returned = %d", rc)); | |
3782 | } else { /* decode response */ | |
3783 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3784 | |
790fe579 | 3785 | if (rc == 0) { |
b77d753c SF |
3786 | unsigned int lnoff; |
3787 | ||
1da177e4 LT |
3788 | /* BB fixme add lock for file (srch_info) struct here */ |
3789 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3790 | psrch_inf->unicode = true; |
1da177e4 | 3791 | else |
4b18f2a9 | 3792 | psrch_inf->unicode = false; |
1da177e4 LT |
3793 | response_data = (char *) &pSMBr->hdr.Protocol + |
3794 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3795 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3796 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3797 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3798 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3799 | cifs_small_buf_release( |
3800 | psrch_inf->ntwrk_buf_start); | |
3801 | else | |
3802 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3803 | psrch_inf->srch_entries_start = response_data; |
3804 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3805 | psrch_inf->smallBuf = 0; |
790fe579 | 3806 | if (parms->EndofSearch) |
4b18f2a9 | 3807 | psrch_inf->endOfSearch = true; |
1da177e4 | 3808 | else |
4b18f2a9 | 3809 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3810 | psrch_inf->entries_in_buffer = |
3811 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3812 | psrch_inf->index_of_last_entry += |
3813 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3814 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3815 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3816 | lnoff) { | |
3817 | cERROR(1, ("ignoring corrupt resume name")); | |
3818 | psrch_inf->last_entry = NULL; | |
3819 | return rc; | |
3820 | } else | |
3821 | psrch_inf->last_entry = | |
3822 | psrch_inf->srch_entries_start + lnoff; | |
3823 | ||
50c2f753 SF |
3824 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d", |
3825 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry)); */ | |
1da177e4 LT |
3826 | |
3827 | /* BB fixme add unlock here */ | |
3828 | } | |
3829 | ||
3830 | } | |
3831 | ||
3832 | /* BB On error, should we leave previous search buf (and count and | |
3833 | last entry fields) intact or free the previous one? */ | |
3834 | ||
3835 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3836 | since file handle passed in no longer valid */ | |
3837 | FNext2_err_exit: | |
3838 | if (rc != 0) | |
3839 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3840 | return rc; |
3841 | } | |
3842 | ||
3843 | int | |
50c2f753 SF |
3844 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3845 | const __u16 searchHandle) | |
1da177e4 LT |
3846 | { |
3847 | int rc = 0; | |
3848 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
3849 | |
3850 | cFYI(1, ("In CIFSSMBFindClose")); | |
3851 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
3852 | ||
3853 | /* no sense returning error if session restarted | |
3854 | as file handle has been closed */ | |
790fe579 | 3855 | if (rc == -EAGAIN) |
1da177e4 LT |
3856 | return 0; |
3857 | if (rc) | |
3858 | return rc; | |
3859 | ||
1da177e4 LT |
3860 | pSMB->FileID = searchHandle; |
3861 | pSMB->ByteCount = 0; | |
133672ef | 3862 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3863 | if (rc) |
1da177e4 | 3864 | cERROR(1, ("Send error in FindClose = %d", rc)); |
ad7a2926 | 3865 | |
a4544347 | 3866 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3867 | |
3868 | /* Since session is dead, search handle closed on server already */ | |
3869 | if (rc == -EAGAIN) | |
3870 | rc = 0; | |
3871 | ||
3872 | return rc; | |
3873 | } | |
3874 | ||
1da177e4 LT |
3875 | int |
3876 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3877 | const unsigned char *searchName, |
ad7a2926 | 3878 | __u64 *inode_number, |
50c2f753 | 3879 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3880 | { |
3881 | int rc = 0; | |
3882 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3883 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3884 | int name_len, bytes_returned; | |
3885 | __u16 params, byte_count; | |
3886 | ||
50c2f753 | 3887 | cFYI(1, ("In GetSrvInodeNum for %s", searchName)); |
790fe579 | 3888 | if (tcon == NULL) |
50c2f753 | 3889 | return -ENODEV; |
1da177e4 LT |
3890 | |
3891 | GetInodeNumberRetry: | |
3892 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3893 | (void **) &pSMBr); |
1da177e4 LT |
3894 | if (rc) |
3895 | return rc; | |
3896 | ||
1da177e4 LT |
3897 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3898 | name_len = | |
b1a45695 | 3899 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 3900 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3901 | name_len++; /* trailing null */ |
3902 | name_len *= 2; | |
50c2f753 | 3903 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3904 | name_len = strnlen(searchName, PATH_MAX); |
3905 | name_len++; /* trailing null */ | |
3906 | strncpy(pSMB->FileName, searchName, name_len); | |
3907 | } | |
3908 | ||
3909 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3910 | pSMB->TotalDataCount = 0; | |
3911 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3912 | /* BB find exact max data count below from sess structure BB */ | |
3913 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3914 | pSMB->MaxSetupCount = 0; | |
3915 | pSMB->Reserved = 0; | |
3916 | pSMB->Flags = 0; | |
3917 | pSMB->Timeout = 0; | |
3918 | pSMB->Reserved2 = 0; | |
3919 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3920 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3921 | pSMB->DataCount = 0; |
3922 | pSMB->DataOffset = 0; | |
3923 | pSMB->SetupCount = 1; | |
3924 | pSMB->Reserved3 = 0; | |
3925 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3926 | byte_count = params + 1 /* pad */ ; | |
3927 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3928 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3929 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3930 | pSMB->Reserved4 = 0; | |
3931 | pSMB->hdr.smb_buf_length += byte_count; | |
3932 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3933 | ||
3934 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3935 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3936 | if (rc) { | |
3937 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
3938 | } else { | |
3939 | /* decode response */ | |
3940 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3941 | if (rc || (pSMBr->ByteCount < 2)) | |
3942 | /* BB also check enough total bytes returned */ | |
3943 | /* If rc should we check for EOPNOSUPP and | |
3944 | disable the srvino flag? or in caller? */ | |
3945 | rc = -EIO; /* bad smb */ | |
50c2f753 | 3946 | else { |
1da177e4 LT |
3947 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
3948 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 3949 | struct file_internal_info *pfinfo; |
1da177e4 | 3950 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 3951 | if (count < 8) { |
1da177e4 LT |
3952 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); |
3953 | rc = -EIO; | |
3954 | goto GetInodeNumOut; | |
3955 | } | |
3956 | pfinfo = (struct file_internal_info *) | |
3957 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 3958 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
3959 | } |
3960 | } | |
3961 | GetInodeNumOut: | |
3962 | cifs_buf_release(pSMB); | |
3963 | if (rc == -EAGAIN) | |
3964 | goto GetInodeNumberRetry; | |
3965 | return rc; | |
3966 | } | |
1da177e4 | 3967 | |
fec4585f IM |
3968 | /* parses DFS refferal V3 structure |
3969 | * caller is responsible for freeing target_nodes | |
3970 | * returns: | |
3971 | * on success - 0 | |
3972 | * on failure - errno | |
3973 | */ | |
3974 | static int | |
a1fe78f1 | 3975 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
3976 | unsigned int *num_of_nodes, |
3977 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
3978 | const struct nls_table *nls_codepage, int remap, |
3979 | const char *searchName) | |
fec4585f IM |
3980 | { |
3981 | int i, rc = 0; | |
3982 | char *data_end; | |
3983 | bool is_unicode; | |
3984 | struct dfs_referral_level_3 *ref; | |
3985 | ||
5ca33c6a HH |
3986 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3987 | is_unicode = true; | |
3988 | else | |
3989 | is_unicode = false; | |
fec4585f IM |
3990 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
3991 | ||
3992 | if (*num_of_nodes < 1) { | |
3993 | cERROR(1, ("num_referrals: must be at least > 0," | |
3994 | "but we get num_referrals = %d\n", *num_of_nodes)); | |
3995 | rc = -EINVAL; | |
a1fe78f1 | 3996 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3997 | } |
3998 | ||
3999 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4000 | if (ref->VersionNumber != cpu_to_le16(3)) { |
fec4585f | 4001 | cERROR(1, ("Referrals of V%d version are not supported," |
1d92cfd5 | 4002 | "should be V3", le16_to_cpu(ref->VersionNumber))); |
fec4585f | 4003 | rc = -EINVAL; |
a1fe78f1 | 4004 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4005 | } |
4006 | ||
4007 | /* get the upper boundary of the resp buffer */ | |
4008 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4009 | le16_to_cpu(pSMBr->t2.DataCount); | |
4010 | ||
4011 | cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n", | |
4012 | *num_of_nodes, | |
0e0d2cf3 | 4013 | le32_to_cpu(pSMBr->DFSFlags))); |
fec4585f IM |
4014 | |
4015 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4016 | *num_of_nodes, GFP_KERNEL); | |
4017 | if (*target_nodes == NULL) { | |
4018 | cERROR(1, ("Failed to allocate buffer for target_nodes\n")); | |
4019 | rc = -ENOMEM; | |
a1fe78f1 | 4020 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4021 | } |
4022 | ||
3ad2f3fb | 4023 | /* collect necessary data from referrals */ |
fec4585f IM |
4024 | for (i = 0; i < *num_of_nodes; i++) { |
4025 | char *temp; | |
4026 | int max_len; | |
4027 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4028 | ||
0e0d2cf3 | 4029 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4030 | if (is_unicode) { |
331c3135 JL |
4031 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4032 | GFP_KERNEL); | |
2920ee2b SF |
4033 | if (tmp == NULL) { |
4034 | rc = -ENOMEM; | |
4035 | goto parse_DFS_referrals_exit; | |
4036 | } | |
2c55608f IM |
4037 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4038 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4039 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4040 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4041 | nls_codepage); |
4042 | kfree(tmp); | |
4043 | } else | |
4044 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4045 | ||
fec4585f IM |
4046 | node->server_type = le16_to_cpu(ref->ServerType); |
4047 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4048 | ||
4049 | /* copy DfsPath */ | |
4050 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4051 | max_len = data_end - temp; | |
d185cda7 SF |
4052 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4053 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4054 | if (!node->path_name) { |
4055 | rc = -ENOMEM; | |
a1fe78f1 | 4056 | goto parse_DFS_referrals_exit; |
066ce689 | 4057 | } |
fec4585f IM |
4058 | |
4059 | /* copy link target UNC */ | |
4060 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4061 | max_len = data_end - temp; | |
d185cda7 SF |
4062 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4063 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4064 | if (!node->node_name) |
4065 | rc = -ENOMEM; | |
fec4585f IM |
4066 | } |
4067 | ||
a1fe78f1 | 4068 | parse_DFS_referrals_exit: |
fec4585f IM |
4069 | if (rc) { |
4070 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4071 | *target_nodes = NULL; | |
4072 | *num_of_nodes = 0; | |
4073 | } | |
4074 | return rc; | |
4075 | } | |
4076 | ||
1da177e4 LT |
4077 | int |
4078 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
4079 | const unsigned char *searchName, | |
c2cf07d5 SF |
4080 | struct dfs_info3_param **target_nodes, |
4081 | unsigned int *num_of_nodes, | |
737b758c | 4082 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4083 | { |
4084 | /* TRANS2_GET_DFS_REFERRAL */ | |
4085 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4086 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4087 | int rc = 0; |
4088 | int bytes_returned; | |
4089 | int name_len; | |
1da177e4 | 4090 | __u16 params, byte_count; |
c2cf07d5 SF |
4091 | *num_of_nodes = 0; |
4092 | *target_nodes = NULL; | |
1da177e4 LT |
4093 | |
4094 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
4095 | if (ses == NULL) | |
4096 | return -ENODEV; | |
4097 | getDFSRetry: | |
4098 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4099 | (void **) &pSMBr); | |
4100 | if (rc) | |
4101 | return rc; | |
50c2f753 SF |
4102 | |
4103 | /* server pointer checked in called function, | |
1982c344 SF |
4104 | but should never be null here anyway */ |
4105 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4106 | pSMB->hdr.Tid = ses->ipc_tid; |
4107 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4108 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4109 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4110 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4111 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4112 | |
4113 | if (ses->capabilities & CAP_UNICODE) { | |
4114 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4115 | name_len = | |
b1a45695 | 4116 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4117 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4118 | name_len++; /* trailing null */ |
4119 | name_len *= 2; | |
50c2f753 | 4120 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4121 | name_len = strnlen(searchName, PATH_MAX); |
4122 | name_len++; /* trailing null */ | |
4123 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4124 | } | |
4125 | ||
790fe579 SF |
4126 | if (ses->server) { |
4127 | if (ses->server->secMode & | |
1a4e15a0 SF |
4128 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4129 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4130 | } | |
4131 | ||
50c2f753 | 4132 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4133 | |
1da177e4 LT |
4134 | params = 2 /* level */ + name_len /*includes null */ ; |
4135 | pSMB->TotalDataCount = 0; | |
4136 | pSMB->DataCount = 0; | |
4137 | pSMB->DataOffset = 0; | |
4138 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4139 | /* BB find exact max SMB PDU from sess structure BB */ |
4140 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4141 | pSMB->MaxSetupCount = 0; |
4142 | pSMB->Reserved = 0; | |
4143 | pSMB->Flags = 0; | |
4144 | pSMB->Timeout = 0; | |
4145 | pSMB->Reserved2 = 0; | |
4146 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4147 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4148 | pSMB->SetupCount = 1; |
4149 | pSMB->Reserved3 = 0; | |
4150 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4151 | byte_count = params + 3 /* pad */ ; | |
4152 | pSMB->ParameterCount = cpu_to_le16(params); | |
4153 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4154 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
4155 | pSMB->hdr.smb_buf_length += byte_count; | |
4156 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4157 | ||
4158 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4159 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4160 | if (rc) { | |
4161 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
c2cf07d5 SF |
4162 | goto GetDFSRefExit; |
4163 | } | |
4164 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4165 | |
c2cf07d5 | 4166 | /* BB Also check if enough total bytes returned? */ |
fec4585f | 4167 | if (rc || (pSMBr->ByteCount < 17)) { |
c2cf07d5 | 4168 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4169 | goto GetDFSRefExit; |
4170 | } | |
c2cf07d5 | 4171 | |
fec4585f IM |
4172 | cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d", |
4173 | pSMBr->ByteCount, | |
4174 | le16_to_cpu(pSMBr->t2.DataOffset))); | |
1da177e4 | 4175 | |
fec4585f | 4176 | /* parse returned result into more usable form */ |
a1fe78f1 | 4177 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4178 | target_nodes, nls_codepage, remap, |
4179 | searchName); | |
c2cf07d5 | 4180 | |
1da177e4 | 4181 | GetDFSRefExit: |
0d817bc0 | 4182 | cifs_buf_release(pSMB); |
1da177e4 LT |
4183 | |
4184 | if (rc == -EAGAIN) | |
4185 | goto getDFSRetry; | |
4186 | ||
4187 | return rc; | |
4188 | } | |
4189 | ||
20962438 SF |
4190 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4191 | int | |
4192 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4193 | { | |
4194 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4195 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4196 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4197 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4198 | int rc = 0; | |
4199 | int bytes_returned = 0; | |
4200 | __u16 params, byte_count; | |
4201 | ||
4202 | cFYI(1, ("OldQFSInfo")); | |
4203 | oldQFSInfoRetry: | |
4204 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4205 | (void **) &pSMBr); | |
4206 | if (rc) | |
4207 | return rc; | |
20962438 SF |
4208 | |
4209 | params = 2; /* level */ | |
4210 | pSMB->TotalDataCount = 0; | |
4211 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4212 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4213 | pSMB->MaxSetupCount = 0; | |
4214 | pSMB->Reserved = 0; | |
4215 | pSMB->Flags = 0; | |
4216 | pSMB->Timeout = 0; | |
4217 | pSMB->Reserved2 = 0; | |
4218 | byte_count = params + 1 /* pad */ ; | |
4219 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4220 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4221 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4222 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4223 | pSMB->DataCount = 0; | |
4224 | pSMB->DataOffset = 0; | |
4225 | pSMB->SetupCount = 1; | |
4226 | pSMB->Reserved3 = 0; | |
4227 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4228 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4229 | pSMB->hdr.smb_buf_length += byte_count; | |
4230 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4231 | ||
4232 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4233 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4234 | if (rc) { | |
4235 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
4236 | } else { /* decode response */ | |
4237 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4238 | ||
4239 | if (rc || (pSMBr->ByteCount < 18)) | |
4240 | rc = -EIO; /* bad smb */ | |
4241 | else { | |
4242 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 4243 | cFYI(1, ("qfsinf resp BCC: %d Offset %d", |
20962438 SF |
4244 | pSMBr->ByteCount, data_offset)); |
4245 | ||
50c2f753 | 4246 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4247 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4248 | FSData->f_bsize = | |
4249 | le16_to_cpu(response_data->BytesPerSector) * | |
4250 | le32_to_cpu(response_data-> | |
4251 | SectorsPerAllocationUnit); | |
4252 | FSData->f_blocks = | |
50c2f753 | 4253 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4254 | FSData->f_bfree = FSData->f_bavail = |
4255 | le32_to_cpu(response_data->FreeAllocationUnits); | |
4256 | cFYI(1, | |
4257 | ("Blocks: %lld Free: %lld Block size %ld", | |
4258 | (unsigned long long)FSData->f_blocks, | |
4259 | (unsigned long long)FSData->f_bfree, | |
4260 | FSData->f_bsize)); | |
4261 | } | |
4262 | } | |
4263 | cifs_buf_release(pSMB); | |
4264 | ||
4265 | if (rc == -EAGAIN) | |
4266 | goto oldQFSInfoRetry; | |
4267 | ||
4268 | return rc; | |
4269 | } | |
4270 | ||
1da177e4 | 4271 | int |
737b758c | 4272 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4273 | { |
4274 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4275 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4276 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4277 | FILE_SYSTEM_INFO *response_data; | |
4278 | int rc = 0; | |
4279 | int bytes_returned = 0; | |
4280 | __u16 params, byte_count; | |
4281 | ||
4282 | cFYI(1, ("In QFSInfo")); | |
4283 | QFSInfoRetry: | |
4284 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4285 | (void **) &pSMBr); | |
4286 | if (rc) | |
4287 | return rc; | |
4288 | ||
4289 | params = 2; /* level */ | |
4290 | pSMB->TotalDataCount = 0; | |
4291 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4292 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4293 | pSMB->MaxSetupCount = 0; |
4294 | pSMB->Reserved = 0; | |
4295 | pSMB->Flags = 0; | |
4296 | pSMB->Timeout = 0; | |
4297 | pSMB->Reserved2 = 0; | |
4298 | byte_count = params + 1 /* pad */ ; | |
4299 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4300 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4301 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4302 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4303 | pSMB->DataCount = 0; |
4304 | pSMB->DataOffset = 0; | |
4305 | pSMB->SetupCount = 1; | |
4306 | pSMB->Reserved3 = 0; | |
4307 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4308 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4309 | pSMB->hdr.smb_buf_length += byte_count; | |
4310 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4311 | ||
4312 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4313 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4314 | if (rc) { | |
20962438 | 4315 | cFYI(1, ("Send error in QFSInfo = %d", rc)); |
1da177e4 | 4316 | } else { /* decode response */ |
50c2f753 | 4317 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4318 | |
20962438 | 4319 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4320 | rc = -EIO; /* bad smb */ |
4321 | else { | |
4322 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4323 | |
4324 | response_data = | |
4325 | (FILE_SYSTEM_INFO | |
4326 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4327 | data_offset); | |
4328 | FSData->f_bsize = | |
4329 | le32_to_cpu(response_data->BytesPerSector) * | |
4330 | le32_to_cpu(response_data-> | |
4331 | SectorsPerAllocationUnit); | |
4332 | FSData->f_blocks = | |
4333 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4334 | FSData->f_bfree = FSData->f_bavail = | |
4335 | le64_to_cpu(response_data->FreeAllocationUnits); | |
4336 | cFYI(1, | |
4337 | ("Blocks: %lld Free: %lld Block size %ld", | |
4338 | (unsigned long long)FSData->f_blocks, | |
4339 | (unsigned long long)FSData->f_bfree, | |
4340 | FSData->f_bsize)); | |
4341 | } | |
4342 | } | |
4343 | cifs_buf_release(pSMB); | |
4344 | ||
4345 | if (rc == -EAGAIN) | |
4346 | goto QFSInfoRetry; | |
4347 | ||
4348 | return rc; | |
4349 | } | |
4350 | ||
4351 | int | |
737b758c | 4352 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4353 | { |
4354 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4355 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4356 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4357 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4358 | int rc = 0; | |
4359 | int bytes_returned = 0; | |
4360 | __u16 params, byte_count; | |
4361 | ||
4362 | cFYI(1, ("In QFSAttributeInfo")); | |
4363 | QFSAttributeRetry: | |
4364 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4365 | (void **) &pSMBr); | |
4366 | if (rc) | |
4367 | return rc; | |
4368 | ||
4369 | params = 2; /* level */ | |
4370 | pSMB->TotalDataCount = 0; | |
4371 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4372 | /* BB find exact max SMB PDU from sess structure BB */ |
4373 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4374 | pSMB->MaxSetupCount = 0; |
4375 | pSMB->Reserved = 0; | |
4376 | pSMB->Flags = 0; | |
4377 | pSMB->Timeout = 0; | |
4378 | pSMB->Reserved2 = 0; | |
4379 | byte_count = params + 1 /* pad */ ; | |
4380 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4381 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4382 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4383 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4384 | pSMB->DataCount = 0; |
4385 | pSMB->DataOffset = 0; | |
4386 | pSMB->SetupCount = 1; | |
4387 | pSMB->Reserved3 = 0; | |
4388 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4389 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4390 | pSMB->hdr.smb_buf_length += byte_count; | |
4391 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4392 | ||
4393 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4394 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4395 | if (rc) { | |
4396 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
4397 | } else { /* decode response */ | |
4398 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4399 | ||
50c2f753 SF |
4400 | if (rc || (pSMBr->ByteCount < 13)) { |
4401 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4402 | rc = -EIO; /* bad smb */ |
4403 | } else { | |
4404 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4405 | response_data = | |
4406 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4407 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4408 | data_offset); | |
4409 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4410 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4411 | } |
4412 | } | |
4413 | cifs_buf_release(pSMB); | |
4414 | ||
4415 | if (rc == -EAGAIN) | |
4416 | goto QFSAttributeRetry; | |
4417 | ||
4418 | return rc; | |
4419 | } | |
4420 | ||
4421 | int | |
737b758c | 4422 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4423 | { |
4424 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4425 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4426 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4427 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4428 | int rc = 0; | |
4429 | int bytes_returned = 0; | |
4430 | __u16 params, byte_count; | |
4431 | ||
4432 | cFYI(1, ("In QFSDeviceInfo")); | |
4433 | QFSDeviceRetry: | |
4434 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4435 | (void **) &pSMBr); | |
4436 | if (rc) | |
4437 | return rc; | |
4438 | ||
4439 | params = 2; /* level */ | |
4440 | pSMB->TotalDataCount = 0; | |
4441 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4442 | /* BB find exact max SMB PDU from sess structure BB */ |
4443 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4444 | pSMB->MaxSetupCount = 0; |
4445 | pSMB->Reserved = 0; | |
4446 | pSMB->Flags = 0; | |
4447 | pSMB->Timeout = 0; | |
4448 | pSMB->Reserved2 = 0; | |
4449 | byte_count = params + 1 /* pad */ ; | |
4450 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4451 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4452 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4453 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4454 | |
4455 | pSMB->DataCount = 0; | |
4456 | pSMB->DataOffset = 0; | |
4457 | pSMB->SetupCount = 1; | |
4458 | pSMB->Reserved3 = 0; | |
4459 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4460 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4461 | pSMB->hdr.smb_buf_length += byte_count; | |
4462 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4463 | ||
4464 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4465 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4466 | if (rc) { | |
4467 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
4468 | } else { /* decode response */ | |
4469 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4470 | ||
630f3f0c | 4471 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) |
1da177e4 LT |
4472 | rc = -EIO; /* bad smb */ |
4473 | else { | |
4474 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4475 | response_data = | |
737b758c SF |
4476 | (FILE_SYSTEM_DEVICE_INFO *) |
4477 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4478 | data_offset); |
4479 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4480 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4481 | } |
4482 | } | |
4483 | cifs_buf_release(pSMB); | |
4484 | ||
4485 | if (rc == -EAGAIN) | |
4486 | goto QFSDeviceRetry; | |
4487 | ||
4488 | return rc; | |
4489 | } | |
4490 | ||
4491 | int | |
737b758c | 4492 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4493 | { |
4494 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4495 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4496 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4497 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4498 | int rc = 0; | |
4499 | int bytes_returned = 0; | |
4500 | __u16 params, byte_count; | |
4501 | ||
4502 | cFYI(1, ("In QFSUnixInfo")); | |
4503 | QFSUnixRetry: | |
4504 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4505 | (void **) &pSMBr); | |
4506 | if (rc) | |
4507 | return rc; | |
4508 | ||
4509 | params = 2; /* level */ | |
4510 | pSMB->TotalDataCount = 0; | |
4511 | pSMB->DataCount = 0; | |
4512 | pSMB->DataOffset = 0; | |
4513 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4514 | /* BB find exact max SMB PDU from sess structure BB */ |
4515 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4516 | pSMB->MaxSetupCount = 0; |
4517 | pSMB->Reserved = 0; | |
4518 | pSMB->Flags = 0; | |
4519 | pSMB->Timeout = 0; | |
4520 | pSMB->Reserved2 = 0; | |
4521 | byte_count = params + 1 /* pad */ ; | |
4522 | pSMB->ParameterCount = cpu_to_le16(params); | |
4523 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4524 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4525 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4526 | pSMB->SetupCount = 1; |
4527 | pSMB->Reserved3 = 0; | |
4528 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4529 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4530 | pSMB->hdr.smb_buf_length += byte_count; | |
4531 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4532 | ||
4533 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4534 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4535 | if (rc) { | |
4536 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4537 | } else { /* decode response */ | |
4538 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4539 | ||
4540 | if (rc || (pSMBr->ByteCount < 13)) { | |
4541 | rc = -EIO; /* bad smb */ | |
4542 | } else { | |
4543 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4544 | response_data = | |
4545 | (FILE_SYSTEM_UNIX_INFO | |
4546 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4547 | data_offset); | |
4548 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4549 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4550 | } |
4551 | } | |
4552 | cifs_buf_release(pSMB); | |
4553 | ||
4554 | if (rc == -EAGAIN) | |
4555 | goto QFSUnixRetry; | |
4556 | ||
4557 | ||
4558 | return rc; | |
4559 | } | |
4560 | ||
ac67055e | 4561 | int |
45abc6ee | 4562 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4563 | { |
4564 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4565 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4566 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4567 | int rc = 0; | |
4568 | int bytes_returned = 0; | |
4569 | __u16 params, param_offset, offset, byte_count; | |
4570 | ||
4571 | cFYI(1, ("In SETFSUnixInfo")); | |
4572 | SETFSUnixRetry: | |
f26282c9 | 4573 | /* BB switch to small buf init to save memory */ |
ac67055e JA |
4574 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
4575 | (void **) &pSMBr); | |
4576 | if (rc) | |
4577 | return rc; | |
4578 | ||
4579 | params = 4; /* 2 bytes zero followed by info level. */ | |
4580 | pSMB->MaxSetupCount = 0; | |
4581 | pSMB->Reserved = 0; | |
4582 | pSMB->Flags = 0; | |
4583 | pSMB->Timeout = 0; | |
4584 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4585 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4586 | - 4; | |
ac67055e JA |
4587 | offset = param_offset + params; |
4588 | ||
4589 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4590 | /* BB find exact max SMB PDU from sess structure BB */ |
4591 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4592 | pSMB->SetupCount = 1; |
4593 | pSMB->Reserved3 = 0; | |
4594 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4595 | byte_count = 1 /* pad */ + params + 12; | |
4596 | ||
4597 | pSMB->DataCount = cpu_to_le16(12); | |
4598 | pSMB->ParameterCount = cpu_to_le16(params); | |
4599 | pSMB->TotalDataCount = pSMB->DataCount; | |
4600 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4601 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4602 | pSMB->DataOffset = cpu_to_le16(offset); | |
4603 | ||
4604 | /* Params. */ | |
4605 | pSMB->FileNum = 0; | |
4606 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4607 | ||
4608 | /* Data. */ | |
4609 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4610 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4611 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4612 | ||
4613 | pSMB->hdr.smb_buf_length += byte_count; | |
4614 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4615 | ||
4616 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4617 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4618 | if (rc) { | |
4619 | cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); | |
4620 | } else { /* decode response */ | |
4621 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4622 | if (rc) |
ac67055e | 4623 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4624 | } |
4625 | cifs_buf_release(pSMB); | |
4626 | ||
4627 | if (rc == -EAGAIN) | |
4628 | goto SETFSUnixRetry; | |
4629 | ||
4630 | return rc; | |
4631 | } | |
4632 | ||
4633 | ||
1da177e4 LT |
4634 | |
4635 | int | |
4636 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4637 | struct kstatfs *FSData) |
1da177e4 LT |
4638 | { |
4639 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4640 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4641 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4642 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4643 | int rc = 0; | |
4644 | int bytes_returned = 0; | |
4645 | __u16 params, byte_count; | |
4646 | ||
4647 | cFYI(1, ("In QFSPosixInfo")); | |
4648 | QFSPosixRetry: | |
4649 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4650 | (void **) &pSMBr); | |
4651 | if (rc) | |
4652 | return rc; | |
4653 | ||
4654 | params = 2; /* level */ | |
4655 | pSMB->TotalDataCount = 0; | |
4656 | pSMB->DataCount = 0; | |
4657 | pSMB->DataOffset = 0; | |
4658 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4659 | /* BB find exact max SMB PDU from sess structure BB */ |
4660 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4661 | pSMB->MaxSetupCount = 0; |
4662 | pSMB->Reserved = 0; | |
4663 | pSMB->Flags = 0; | |
4664 | pSMB->Timeout = 0; | |
4665 | pSMB->Reserved2 = 0; | |
4666 | byte_count = params + 1 /* pad */ ; | |
4667 | pSMB->ParameterCount = cpu_to_le16(params); | |
4668 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4669 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4670 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4671 | pSMB->SetupCount = 1; |
4672 | pSMB->Reserved3 = 0; | |
4673 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4674 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4675 | pSMB->hdr.smb_buf_length += byte_count; | |
4676 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4677 | ||
4678 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4679 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4680 | if (rc) { | |
4681 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4682 | } else { /* decode response */ | |
4683 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4684 | ||
4685 | if (rc || (pSMBr->ByteCount < 13)) { | |
4686 | rc = -EIO; /* bad smb */ | |
4687 | } else { | |
4688 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4689 | response_data = | |
4690 | (FILE_SYSTEM_POSIX_INFO | |
4691 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4692 | data_offset); | |
4693 | FSData->f_bsize = | |
4694 | le32_to_cpu(response_data->BlockSize); | |
4695 | FSData->f_blocks = | |
4696 | le64_to_cpu(response_data->TotalBlocks); | |
4697 | FSData->f_bfree = | |
4698 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4699 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4700 | FSData->f_bavail = FSData->f_bfree; |
4701 | } else { | |
4702 | FSData->f_bavail = | |
50c2f753 | 4703 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4704 | } |
790fe579 | 4705 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4706 | FSData->f_files = |
50c2f753 | 4707 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4708 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4709 | FSData->f_ffree = |
50c2f753 | 4710 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4711 | } |
4712 | } | |
4713 | cifs_buf_release(pSMB); | |
4714 | ||
4715 | if (rc == -EAGAIN) | |
4716 | goto QFSPosixRetry; | |
4717 | ||
4718 | return rc; | |
4719 | } | |
4720 | ||
4721 | ||
50c2f753 SF |
4722 | /* We can not use write of zero bytes trick to |
4723 | set file size due to need for large file support. Also note that | |
4724 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4725 | routine which is only needed to work around a sharing violation bug |
4726 | in Samba which this routine can run into */ | |
4727 | ||
4728 | int | |
4729 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4730 | __u64 size, bool SetAllocation, |
737b758c | 4731 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4732 | { |
4733 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4734 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4735 | struct file_end_of_file_info *parm_data; | |
4736 | int name_len; | |
4737 | int rc = 0; | |
4738 | int bytes_returned = 0; | |
4739 | __u16 params, byte_count, data_count, param_offset, offset; | |
4740 | ||
4741 | cFYI(1, ("In SetEOF")); | |
4742 | SetEOFRetry: | |
4743 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4744 | (void **) &pSMBr); | |
4745 | if (rc) | |
4746 | return rc; | |
4747 | ||
4748 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4749 | name_len = | |
b1a45695 | 4750 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4751 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4752 | name_len++; /* trailing null */ |
4753 | name_len *= 2; | |
3e87d803 | 4754 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4755 | name_len = strnlen(fileName, PATH_MAX); |
4756 | name_len++; /* trailing null */ | |
4757 | strncpy(pSMB->FileName, fileName, name_len); | |
4758 | } | |
4759 | params = 6 + name_len; | |
26f57364 | 4760 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4761 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4762 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4763 | pSMB->MaxSetupCount = 0; |
4764 | pSMB->Reserved = 0; | |
4765 | pSMB->Flags = 0; | |
4766 | pSMB->Timeout = 0; | |
4767 | pSMB->Reserved2 = 0; | |
4768 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4769 | InformationLevel) - 4; |
1da177e4 | 4770 | offset = param_offset + params; |
790fe579 | 4771 | if (SetAllocation) { |
50c2f753 SF |
4772 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4773 | pSMB->InformationLevel = | |
4774 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4775 | else | |
4776 | pSMB->InformationLevel = | |
4777 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4778 | } else /* Set File Size */ { | |
1da177e4 LT |
4779 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4780 | pSMB->InformationLevel = | |
50c2f753 | 4781 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4782 | else |
4783 | pSMB->InformationLevel = | |
50c2f753 | 4784 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4785 | } |
4786 | ||
4787 | parm_data = | |
4788 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4789 | offset); | |
4790 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4791 | pSMB->DataOffset = cpu_to_le16(offset); | |
4792 | pSMB->SetupCount = 1; | |
4793 | pSMB->Reserved3 = 0; | |
4794 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4795 | byte_count = 3 /* pad */ + params + data_count; | |
4796 | pSMB->DataCount = cpu_to_le16(data_count); | |
4797 | pSMB->TotalDataCount = pSMB->DataCount; | |
4798 | pSMB->ParameterCount = cpu_to_le16(params); | |
4799 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4800 | pSMB->Reserved4 = 0; | |
4801 | pSMB->hdr.smb_buf_length += byte_count; | |
4802 | parm_data->FileSize = cpu_to_le64(size); | |
4803 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4804 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4805 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4806 | if (rc) |
1da177e4 | 4807 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); |
1da177e4 LT |
4808 | |
4809 | cifs_buf_release(pSMB); | |
4810 | ||
4811 | if (rc == -EAGAIN) | |
4812 | goto SetEOFRetry; | |
4813 | ||
4814 | return rc; | |
4815 | } | |
4816 | ||
4817 | int | |
50c2f753 | 4818 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4819 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4820 | { |
4821 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4822 | char *data_offset; |
4823 | struct file_end_of_file_info *parm_data; | |
4824 | int rc = 0; | |
1da177e4 LT |
4825 | __u16 params, param_offset, offset, byte_count, count; |
4826 | ||
4827 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
4828 | (long long)size)); | |
cd63499c SF |
4829 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4830 | ||
1da177e4 LT |
4831 | if (rc) |
4832 | return rc; | |
4833 | ||
4834 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4835 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4836 | |
1da177e4 LT |
4837 | params = 6; |
4838 | pSMB->MaxSetupCount = 0; | |
4839 | pSMB->Reserved = 0; | |
4840 | pSMB->Flags = 0; | |
4841 | pSMB->Timeout = 0; | |
4842 | pSMB->Reserved2 = 0; | |
4843 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4844 | offset = param_offset + params; | |
4845 | ||
50c2f753 | 4846 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 LT |
4847 | |
4848 | count = sizeof(struct file_end_of_file_info); | |
4849 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4850 | /* BB find exact max SMB PDU from sess structure BB */ |
4851 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4852 | pSMB->SetupCount = 1; |
4853 | pSMB->Reserved3 = 0; | |
4854 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4855 | byte_count = 3 /* pad */ + params + count; | |
4856 | pSMB->DataCount = cpu_to_le16(count); | |
4857 | pSMB->ParameterCount = cpu_to_le16(params); | |
4858 | pSMB->TotalDataCount = pSMB->DataCount; | |
4859 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4860 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4861 | parm_data = | |
50c2f753 SF |
4862 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4863 | + offset); | |
1da177e4 LT |
4864 | pSMB->DataOffset = cpu_to_le16(offset); |
4865 | parm_data->FileSize = cpu_to_le64(size); | |
4866 | pSMB->Fid = fid; | |
790fe579 | 4867 | if (SetAllocation) { |
1da177e4 LT |
4868 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4869 | pSMB->InformationLevel = | |
4870 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4871 | else | |
4872 | pSMB->InformationLevel = | |
4873 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4874 | } else /* Set File Size */ { |
1da177e4 LT |
4875 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4876 | pSMB->InformationLevel = | |
50c2f753 | 4877 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4878 | else |
4879 | pSMB->InformationLevel = | |
50c2f753 | 4880 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4881 | } |
4882 | pSMB->Reserved4 = 0; | |
4883 | pSMB->hdr.smb_buf_length += byte_count; | |
4884 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
133672ef | 4885 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 LT |
4886 | if (rc) { |
4887 | cFYI(1, | |
4888 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
4889 | rc)); | |
4890 | } | |
4891 | ||
50c2f753 | 4892 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4893 | since file handle passed in no longer valid */ |
4894 | ||
4895 | return rc; | |
4896 | } | |
4897 | ||
50c2f753 | 4898 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4899 | an open handle, rather than by pathname - this is awkward due to |
4900 | potential access conflicts on the open, but it is unavoidable for these | |
4901 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4902 | time and resort to the original setpathinfo level which takes the ancient | |
4903 | DOS time format with 2 second granularity */ | |
4904 | int | |
2dd2dfa0 JL |
4905 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
4906 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
4907 | { |
4908 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4909 | char *data_offset; |
4910 | int rc = 0; | |
1da177e4 LT |
4911 | __u16 params, param_offset, offset, byte_count, count; |
4912 | ||
4913 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
cd63499c SF |
4914 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4915 | ||
1da177e4 LT |
4916 | if (rc) |
4917 | return rc; | |
4918 | ||
2dd2dfa0 JL |
4919 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
4920 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4921 | |
1da177e4 LT |
4922 | params = 6; |
4923 | pSMB->MaxSetupCount = 0; | |
4924 | pSMB->Reserved = 0; | |
4925 | pSMB->Flags = 0; | |
4926 | pSMB->Timeout = 0; | |
4927 | pSMB->Reserved2 = 0; | |
4928 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4929 | offset = param_offset + params; | |
4930 | ||
50c2f753 | 4931 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 4932 | |
26f57364 | 4933 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4934 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4935 | /* BB find max SMB PDU from sess */ |
4936 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4937 | pSMB->SetupCount = 1; |
4938 | pSMB->Reserved3 = 0; | |
4939 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4940 | byte_count = 3 /* pad */ + params + count; | |
4941 | pSMB->DataCount = cpu_to_le16(count); | |
4942 | pSMB->ParameterCount = cpu_to_le16(params); | |
4943 | pSMB->TotalDataCount = pSMB->DataCount; | |
4944 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4945 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4946 | pSMB->DataOffset = cpu_to_le16(offset); | |
4947 | pSMB->Fid = fid; | |
4948 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4949 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4950 | else | |
4951 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4952 | pSMB->Reserved4 = 0; | |
4953 | pSMB->hdr.smb_buf_length += byte_count; | |
4954 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 4955 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 4956 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4957 | if (rc) |
50c2f753 | 4958 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); |
1da177e4 | 4959 | |
50c2f753 | 4960 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4961 | since file handle passed in no longer valid */ |
4962 | ||
4963 | return rc; | |
4964 | } | |
4965 | ||
6d22f098 JL |
4966 | int |
4967 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
4968 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
4969 | { | |
4970 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4971 | char *data_offset; | |
4972 | int rc = 0; | |
4973 | __u16 params, param_offset, offset, byte_count, count; | |
4974 | ||
4975 | cFYI(1, ("Set File Disposition (via SetFileInfo)")); | |
4976 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
4977 | ||
4978 | if (rc) | |
4979 | return rc; | |
4980 | ||
4981 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4982 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
4983 | ||
4984 | params = 6; | |
4985 | pSMB->MaxSetupCount = 0; | |
4986 | pSMB->Reserved = 0; | |
4987 | pSMB->Flags = 0; | |
4988 | pSMB->Timeout = 0; | |
4989 | pSMB->Reserved2 = 0; | |
4990 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4991 | offset = param_offset + params; | |
4992 | ||
4993 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4994 | ||
4995 | count = 1; | |
4996 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4997 | /* BB find max SMB PDU from sess */ | |
4998 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4999 | pSMB->SetupCount = 1; | |
5000 | pSMB->Reserved3 = 0; | |
5001 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5002 | byte_count = 3 /* pad */ + params + count; | |
5003 | pSMB->DataCount = cpu_to_le16(count); | |
5004 | pSMB->ParameterCount = cpu_to_le16(params); | |
5005 | pSMB->TotalDataCount = pSMB->DataCount; | |
5006 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5007 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5008 | pSMB->DataOffset = cpu_to_le16(offset); | |
5009 | pSMB->Fid = fid; | |
5010 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5011 | pSMB->Reserved4 = 0; | |
5012 | pSMB->hdr.smb_buf_length += byte_count; | |
5013 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5014 | *data_offset = delete_file ? 1 : 0; | |
5015 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5016 | if (rc) | |
5017 | cFYI(1, ("Send error in SetFileDisposition = %d", rc)); | |
5018 | ||
5019 | return rc; | |
5020 | } | |
1da177e4 LT |
5021 | |
5022 | int | |
6fc000e5 JL |
5023 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
5024 | const char *fileName, const FILE_BASIC_INFO *data, | |
5025 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5026 | { |
5027 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5028 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5029 | int name_len; | |
5030 | int rc = 0; | |
5031 | int bytes_returned = 0; | |
5032 | char *data_offset; | |
5033 | __u16 params, param_offset, offset, byte_count, count; | |
5034 | ||
5035 | cFYI(1, ("In SetTimes")); | |
5036 | ||
5037 | SetTimesRetry: | |
5038 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5039 | (void **) &pSMBr); | |
5040 | if (rc) | |
5041 | return rc; | |
5042 | ||
5043 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5044 | name_len = | |
b1a45695 | 5045 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5046 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5047 | name_len++; /* trailing null */ |
5048 | name_len *= 2; | |
50c2f753 | 5049 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5050 | name_len = strnlen(fileName, PATH_MAX); |
5051 | name_len++; /* trailing null */ | |
5052 | strncpy(pSMB->FileName, fileName, name_len); | |
5053 | } | |
5054 | ||
5055 | params = 6 + name_len; | |
26f57364 | 5056 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5057 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5058 | /* BB find max SMB PDU from sess structure BB */ |
5059 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5060 | pSMB->MaxSetupCount = 0; |
5061 | pSMB->Reserved = 0; | |
5062 | pSMB->Flags = 0; | |
5063 | pSMB->Timeout = 0; | |
5064 | pSMB->Reserved2 = 0; | |
5065 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5066 | InformationLevel) - 4; |
1da177e4 LT |
5067 | offset = param_offset + params; |
5068 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5069 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5070 | pSMB->DataOffset = cpu_to_le16(offset); | |
5071 | pSMB->SetupCount = 1; | |
5072 | pSMB->Reserved3 = 0; | |
5073 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5074 | byte_count = 3 /* pad */ + params + count; | |
5075 | ||
5076 | pSMB->DataCount = cpu_to_le16(count); | |
5077 | pSMB->ParameterCount = cpu_to_le16(params); | |
5078 | pSMB->TotalDataCount = pSMB->DataCount; | |
5079 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5080 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5081 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5082 | else | |
5083 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5084 | pSMB->Reserved4 = 0; | |
5085 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 5086 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5087 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5088 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5089 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5090 | if (rc) |
1da177e4 | 5091 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); |
1da177e4 LT |
5092 | |
5093 | cifs_buf_release(pSMB); | |
5094 | ||
5095 | if (rc == -EAGAIN) | |
5096 | goto SetTimesRetry; | |
5097 | ||
5098 | return rc; | |
5099 | } | |
5100 | ||
5101 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5102 | /* Can be used to set attributes */ | |
5103 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5104 | handling it anyway and NT4 was what we thought it would be needed for | |
5105 | Do not delete it until we prove whether needed for Win9x though */ | |
5106 | int | |
5107 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5108 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5109 | { | |
5110 | SETATTR_REQ *pSMB = NULL; | |
5111 | SETATTR_RSP *pSMBr = NULL; | |
5112 | int rc = 0; | |
5113 | int bytes_returned; | |
5114 | int name_len; | |
5115 | ||
5116 | cFYI(1, ("In SetAttrLegacy")); | |
5117 | ||
5118 | SetAttrLgcyRetry: | |
5119 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5120 | (void **) &pSMBr); | |
5121 | if (rc) | |
5122 | return rc; | |
5123 | ||
5124 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5125 | name_len = | |
50c2f753 | 5126 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5127 | PATH_MAX, nls_codepage); |
5128 | name_len++; /* trailing null */ | |
5129 | name_len *= 2; | |
50c2f753 | 5130 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5131 | name_len = strnlen(fileName, PATH_MAX); |
5132 | name_len++; /* trailing null */ | |
5133 | strncpy(pSMB->fileName, fileName, name_len); | |
5134 | } | |
5135 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5136 | pSMB->BufferFormat = 0x04; | |
5137 | pSMB->hdr.smb_buf_length += name_len + 1; | |
5138 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
5139 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5140 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5141 | if (rc) |
1da177e4 | 5142 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); |
1da177e4 LT |
5143 | |
5144 | cifs_buf_release(pSMB); | |
5145 | ||
5146 | if (rc == -EAGAIN) | |
5147 | goto SetAttrLgcyRetry; | |
5148 | ||
5149 | return rc; | |
5150 | } | |
5151 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5152 | ||
654cf14a JL |
5153 | static void |
5154 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5155 | const struct cifs_unix_set_info_args *args) | |
5156 | { | |
5157 | u64 mode = args->mode; | |
5158 | ||
5159 | /* | |
5160 | * Samba server ignores set of file size to zero due to bugs in some | |
5161 | * older clients, but we should be precise - we use SetFileSize to | |
5162 | * set file size and do not want to truncate file size to zero | |
5163 | * accidently as happened on one Samba server beta by putting | |
5164 | * zero instead of -1 here | |
5165 | */ | |
5166 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5167 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5168 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5169 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5170 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5171 | data_offset->Uid = cpu_to_le64(args->uid); | |
5172 | data_offset->Gid = cpu_to_le64(args->gid); | |
5173 | /* better to leave device as zero when it is */ | |
5174 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5175 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5176 | data_offset->Permissions = cpu_to_le64(mode); | |
5177 | ||
5178 | if (S_ISREG(mode)) | |
5179 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5180 | else if (S_ISDIR(mode)) | |
5181 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5182 | else if (S_ISLNK(mode)) | |
5183 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5184 | else if (S_ISCHR(mode)) | |
5185 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5186 | else if (S_ISBLK(mode)) | |
5187 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5188 | else if (S_ISFIFO(mode)) | |
5189 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5190 | else if (S_ISSOCK(mode)) | |
5191 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5192 | } | |
5193 | ||
3bbeeb3c JL |
5194 | int |
5195 | CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon, | |
5196 | const struct cifs_unix_set_info_args *args, | |
5197 | u16 fid, u32 pid_of_opener) | |
5198 | { | |
5199 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5200 | FILE_UNIX_BASIC_INFO *data_offset; | |
5201 | int rc = 0; | |
5202 | u16 params, param_offset, offset, byte_count, count; | |
5203 | ||
5204 | cFYI(1, ("Set Unix Info (via SetFileInfo)")); | |
5205 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
5206 | ||
5207 | if (rc) | |
5208 | return rc; | |
5209 | ||
5210 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5211 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5212 | ||
5213 | params = 6; | |
5214 | pSMB->MaxSetupCount = 0; | |
5215 | pSMB->Reserved = 0; | |
5216 | pSMB->Flags = 0; | |
5217 | pSMB->Timeout = 0; | |
5218 | pSMB->Reserved2 = 0; | |
5219 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5220 | offset = param_offset + params; | |
5221 | ||
5222 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5223 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5224 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5225 | ||
5226 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5227 | /* BB find max SMB PDU from sess */ | |
5228 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5229 | pSMB->SetupCount = 1; | |
5230 | pSMB->Reserved3 = 0; | |
5231 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5232 | byte_count = 3 /* pad */ + params + count; | |
5233 | pSMB->DataCount = cpu_to_le16(count); | |
5234 | pSMB->ParameterCount = cpu_to_le16(params); | |
5235 | pSMB->TotalDataCount = pSMB->DataCount; | |
5236 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5237 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5238 | pSMB->DataOffset = cpu_to_le16(offset); | |
5239 | pSMB->Fid = fid; | |
5240 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5241 | pSMB->Reserved4 = 0; | |
5242 | pSMB->hdr.smb_buf_length += byte_count; | |
5243 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5244 | ||
5245 | cifs_fill_unix_set_info(data_offset, args); | |
5246 | ||
5247 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5248 | if (rc) | |
5249 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); | |
5250 | ||
5251 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5252 | since file handle passed in no longer valid */ | |
5253 | ||
5254 | return rc; | |
5255 | } | |
5256 | ||
1da177e4 | 5257 | int |
01ea95e3 JL |
5258 | CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
5259 | const struct cifs_unix_set_info_args *args, | |
5260 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5261 | { |
5262 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5263 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5264 | int name_len; | |
5265 | int rc = 0; | |
5266 | int bytes_returned = 0; | |
5267 | FILE_UNIX_BASIC_INFO *data_offset; | |
5268 | __u16 params, param_offset, offset, count, byte_count; | |
5269 | ||
5270 | cFYI(1, ("In SetUID/GID/Mode")); | |
5271 | setPermsRetry: | |
5272 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5273 | (void **) &pSMBr); | |
5274 | if (rc) | |
5275 | return rc; | |
5276 | ||
5277 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5278 | name_len = | |
50c2f753 | 5279 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5280 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5281 | name_len++; /* trailing null */ |
5282 | name_len *= 2; | |
3e87d803 | 5283 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5284 | name_len = strnlen(fileName, PATH_MAX); |
5285 | name_len++; /* trailing null */ | |
5286 | strncpy(pSMB->FileName, fileName, name_len); | |
5287 | } | |
5288 | ||
5289 | params = 6 + name_len; | |
26f57364 | 5290 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5291 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5292 | /* BB find max SMB PDU from sess structure BB */ |
5293 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5294 | pSMB->MaxSetupCount = 0; |
5295 | pSMB->Reserved = 0; | |
5296 | pSMB->Flags = 0; | |
5297 | pSMB->Timeout = 0; | |
5298 | pSMB->Reserved2 = 0; | |
5299 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5300 | InformationLevel) - 4; |
1da177e4 LT |
5301 | offset = param_offset + params; |
5302 | data_offset = | |
5303 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5304 | offset); | |
5305 | memset(data_offset, 0, count); | |
5306 | pSMB->DataOffset = cpu_to_le16(offset); | |
5307 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5308 | pSMB->SetupCount = 1; | |
5309 | pSMB->Reserved3 = 0; | |
5310 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5311 | byte_count = 3 /* pad */ + params + count; | |
5312 | pSMB->ParameterCount = cpu_to_le16(params); | |
5313 | pSMB->DataCount = cpu_to_le16(count); | |
5314 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5315 | pSMB->TotalDataCount = pSMB->DataCount; | |
5316 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5317 | pSMB->Reserved4 = 0; | |
5318 | pSMB->hdr.smb_buf_length += byte_count; | |
1da177e4 | 5319 | |
654cf14a | 5320 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5321 | |
5322 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5323 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5324 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5325 | if (rc) |
1da177e4 | 5326 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); |
1da177e4 | 5327 | |
0d817bc0 | 5328 | cifs_buf_release(pSMB); |
1da177e4 LT |
5329 | if (rc == -EAGAIN) |
5330 | goto setPermsRetry; | |
5331 | return rc; | |
5332 | } | |
5333 | ||
50c2f753 | 5334 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
167a251a | 5335 | const int notify_subdirs, const __u16 netfid, |
50c2f753 | 5336 | __u32 filter, struct file *pfile, int multishot, |
167a251a | 5337 | const struct nls_table *nls_codepage) |
1da177e4 LT |
5338 | { |
5339 | int rc = 0; | |
50c2f753 SF |
5340 | struct smb_com_transaction_change_notify_req *pSMB = NULL; |
5341 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
abb15b8a | 5342 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
5343 | int bytes_returned; |
5344 | ||
50c2f753 | 5345 | cFYI(1, ("In CIFSSMBNotify for file handle %d", (int)netfid)); |
1da177e4 | 5346 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
50c2f753 | 5347 | (void **) &pSMBr); |
1da177e4 LT |
5348 | if (rc) |
5349 | return rc; | |
5350 | ||
5351 | pSMB->TotalParameterCount = 0 ; | |
5352 | pSMB->TotalDataCount = 0; | |
5353 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5354 | /* BB find exact data count max from sess structure BB */ | |
5355 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
5356 | /* BB VERIFY verify which is correct for above BB */ |
5357 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5358 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5359 | ||
1da177e4 LT |
5360 | pSMB->MaxSetupCount = 4; |
5361 | pSMB->Reserved = 0; | |
5362 | pSMB->ParameterOffset = 0; | |
5363 | pSMB->DataCount = 0; | |
5364 | pSMB->DataOffset = 0; | |
5365 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5366 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5367 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 5368 | if (notify_subdirs) |
1da177e4 LT |
5369 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
5370 | pSMB->Reserved2 = 0; | |
5371 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5372 | pSMB->Fid = netfid; /* file handle always le */ | |
5373 | pSMB->ByteCount = 0; | |
5374 | ||
5375 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef SF |
5376 | (struct smb_hdr *)pSMBr, &bytes_returned, |
5377 | CIFS_ASYNC_OP); | |
1da177e4 LT |
5378 | if (rc) { |
5379 | cFYI(1, ("Error in Notify = %d", rc)); | |
ff5dbd9e SF |
5380 | } else { |
5381 | /* Add file to outstanding requests */ | |
50c2f753 | 5382 | /* BB change to kmem cache alloc */ |
5cbded58 | 5383 | dnotify_req = kmalloc( |
47c786e7 SF |
5384 | sizeof(struct dir_notify_req), |
5385 | GFP_KERNEL); | |
790fe579 | 5386 | if (dnotify_req) { |
47c786e7 SF |
5387 | dnotify_req->Pid = pSMB->hdr.Pid; |
5388 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5389 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5390 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5391 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5392 | dnotify_req->netfid = netfid; | |
5393 | dnotify_req->pfile = pfile; | |
5394 | dnotify_req->filter = filter; | |
5395 | dnotify_req->multishot = multishot; | |
5396 | spin_lock(&GlobalMid_Lock); | |
50c2f753 | 5397 | list_add_tail(&dnotify_req->lhead, |
47c786e7 SF |
5398 | &GlobalDnotifyReqList); |
5399 | spin_unlock(&GlobalMid_Lock); | |
50c2f753 | 5400 | } else |
47c786e7 | 5401 | rc = -ENOMEM; |
1da177e4 LT |
5402 | } |
5403 | cifs_buf_release(pSMB); | |
50c2f753 | 5404 | return rc; |
1da177e4 | 5405 | } |
31c0519f | 5406 | |
1da177e4 | 5407 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5408 | /* |
5409 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5410 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5411 | * it looks for that attribute name and stuffs that value into the EAData | |
5412 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5413 | * buffer. In both cases, the return value is either the length of the | |
5414 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5415 | * the data isn't copied to it, but the length is returned. | |
5416 | */ | |
1da177e4 LT |
5417 | ssize_t |
5418 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
31c0519f JL |
5419 | const unsigned char *searchName, const unsigned char *ea_name, |
5420 | char *EAData, size_t buf_size, | |
5421 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5422 | { |
5423 | /* BB assumes one setup word */ | |
5424 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5425 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5426 | int rc = 0; | |
5427 | int bytes_returned; | |
6e462b9f | 5428 | int list_len; |
f0d3868b | 5429 | struct fealist *ea_response_data; |
50c2f753 SF |
5430 | struct fea *temp_fea; |
5431 | char *temp_ptr; | |
0cd126b5 | 5432 | char *end_of_smb; |
f0d3868b | 5433 | __u16 params, byte_count, data_offset; |
1da177e4 LT |
5434 | |
5435 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
5436 | QAllEAsRetry: | |
5437 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5438 | (void **) &pSMBr); | |
5439 | if (rc) | |
5440 | return rc; | |
5441 | ||
5442 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5443 | list_len = |
50c2f753 | 5444 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5445 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5446 | list_len++; /* trailing null */ |
5447 | list_len *= 2; | |
1da177e4 | 5448 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5449 | list_len = strnlen(searchName, PATH_MAX); |
5450 | list_len++; /* trailing null */ | |
5451 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5452 | } |
5453 | ||
6e462b9f | 5454 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5455 | pSMB->TotalDataCount = 0; |
5456 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5457 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5458 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5459 | pSMB->MaxSetupCount = 0; |
5460 | pSMB->Reserved = 0; | |
5461 | pSMB->Flags = 0; | |
5462 | pSMB->Timeout = 0; | |
5463 | pSMB->Reserved2 = 0; | |
5464 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5465 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5466 | pSMB->DataCount = 0; |
5467 | pSMB->DataOffset = 0; | |
5468 | pSMB->SetupCount = 1; | |
5469 | pSMB->Reserved3 = 0; | |
5470 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5471 | byte_count = params + 1 /* pad */ ; | |
5472 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5473 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5474 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5475 | pSMB->Reserved4 = 0; | |
5476 | pSMB->hdr.smb_buf_length += byte_count; | |
5477 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5478 | ||
5479 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5480 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5481 | if (rc) { | |
5482 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
f0d3868b JL |
5483 | goto QAllEAsOut; |
5484 | } | |
1da177e4 | 5485 | |
f0d3868b JL |
5486 | |
5487 | /* BB also check enough total bytes returned */ | |
5488 | /* BB we need to improve the validity checking | |
5489 | of these trans2 responses */ | |
5490 | ||
5491 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5492 | if (rc || (pSMBr->ByteCount < 4)) { | |
5493 | rc = -EIO; /* bad smb */ | |
5494 | goto QAllEAsOut; | |
5495 | } | |
5496 | ||
5497 | /* check that length of list is not more than bcc */ | |
5498 | /* check that each entry does not go beyond length | |
5499 | of list */ | |
5500 | /* check that each element of each entry does not | |
5501 | go beyond end of list */ | |
5502 | /* validate_trans2_offsets() */ | |
5503 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5504 | ||
5505 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5506 | ea_response_data = (struct fealist *) | |
5507 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5508 | ||
6e462b9f JL |
5509 | list_len = le32_to_cpu(ea_response_data->list_len); |
5510 | cFYI(1, ("ea length %d", list_len)); | |
5511 | if (list_len <= 8) { | |
f0d3868b JL |
5512 | cFYI(1, ("empty EA list returned from server")); |
5513 | goto QAllEAsOut; | |
5514 | } | |
5515 | ||
0cd126b5 JL |
5516 | /* make sure list_len doesn't go past end of SMB */ |
5517 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + BCC(&pSMBr->hdr); | |
5518 | if ((char *)ea_response_data + list_len > end_of_smb) { | |
5519 | cFYI(1, ("EA list appears to go beyond SMB")); | |
5520 | rc = -EIO; | |
5521 | goto QAllEAsOut; | |
5522 | } | |
5523 | ||
f0d3868b | 5524 | /* account for ea list len */ |
6e462b9f | 5525 | list_len -= 4; |
f0d3868b JL |
5526 | temp_fea = ea_response_data->list; |
5527 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5528 | while (list_len > 0) { |
122ca007 | 5529 | unsigned int name_len; |
f0d3868b | 5530 | __u16 value_len; |
0cd126b5 | 5531 | |
6e462b9f | 5532 | list_len -= 4; |
f0d3868b | 5533 | temp_ptr += 4; |
0cd126b5 JL |
5534 | /* make sure we can read name_len and value_len */ |
5535 | if (list_len < 0) { | |
5536 | cFYI(1, ("EA entry goes beyond length of list")); | |
5537 | rc = -EIO; | |
5538 | goto QAllEAsOut; | |
5539 | } | |
5540 | ||
5541 | name_len = temp_fea->name_len; | |
5542 | value_len = le16_to_cpu(temp_fea->value_len); | |
5543 | list_len -= name_len + 1 + value_len; | |
5544 | if (list_len < 0) { | |
5545 | cFYI(1, ("EA entry goes beyond length of list")); | |
5546 | rc = -EIO; | |
5547 | goto QAllEAsOut; | |
5548 | } | |
5549 | ||
31c0519f JL |
5550 | if (ea_name) { |
5551 | if (strncmp(ea_name, temp_ptr, name_len) == 0) { | |
5552 | temp_ptr += name_len + 1; | |
5553 | rc = value_len; | |
5554 | if (buf_size == 0) | |
5555 | goto QAllEAsOut; | |
5556 | if ((size_t)value_len > buf_size) { | |
5557 | rc = -ERANGE; | |
5558 | goto QAllEAsOut; | |
5559 | } | |
5560 | memcpy(EAData, temp_ptr, value_len); | |
5561 | goto QAllEAsOut; | |
5562 | } | |
f0d3868b | 5563 | } else { |
31c0519f JL |
5564 | /* account for prefix user. and trailing null */ |
5565 | rc += (5 + 1 + name_len); | |
5566 | if (rc < (int) buf_size) { | |
5567 | memcpy(EAData, "user.", 5); | |
5568 | EAData += 5; | |
5569 | memcpy(EAData, temp_ptr, name_len); | |
5570 | EAData += name_len; | |
5571 | /* null terminate name */ | |
5572 | *EAData = 0; | |
5573 | ++EAData; | |
5574 | } else if (buf_size == 0) { | |
5575 | /* skip copy - calc size only */ | |
5576 | } else { | |
5577 | /* stop before overrun buffer */ | |
5578 | rc = -ERANGE; | |
5579 | break; | |
5580 | } | |
1da177e4 | 5581 | } |
0cd126b5 | 5582 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5583 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5584 | } |
f0d3868b | 5585 | |
31c0519f JL |
5586 | /* didn't find the named attribute */ |
5587 | if (ea_name) | |
5588 | rc = -ENODATA; | |
5589 | ||
f0d3868b | 5590 | QAllEAsOut: |
0d817bc0 | 5591 | cifs_buf_release(pSMB); |
1da177e4 LT |
5592 | if (rc == -EAGAIN) |
5593 | goto QAllEAsRetry; | |
5594 | ||
5595 | return (ssize_t)rc; | |
5596 | } | |
5597 | ||
1da177e4 LT |
5598 | int |
5599 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5600 | const char *ea_name, const void *ea_value, |
5601 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5602 | int remap) | |
1da177e4 LT |
5603 | { |
5604 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5605 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5606 | struct fealist *parm_data; | |
5607 | int name_len; | |
5608 | int rc = 0; | |
5609 | int bytes_returned = 0; | |
5610 | __u16 params, param_offset, byte_count, offset, count; | |
5611 | ||
5612 | cFYI(1, ("In SetEA")); | |
5613 | SetEARetry: | |
5614 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5615 | (void **) &pSMBr); | |
5616 | if (rc) | |
5617 | return rc; | |
5618 | ||
5619 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5620 | name_len = | |
50c2f753 | 5621 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5622 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5623 | name_len++; /* trailing null */ |
5624 | name_len *= 2; | |
50c2f753 | 5625 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5626 | name_len = strnlen(fileName, PATH_MAX); |
5627 | name_len++; /* trailing null */ | |
5628 | strncpy(pSMB->FileName, fileName, name_len); | |
5629 | } | |
5630 | ||
5631 | params = 6 + name_len; | |
5632 | ||
5633 | /* done calculating parms using name_len of file name, | |
5634 | now use name_len to calculate length of ea name | |
5635 | we are going to create in the inode xattrs */ | |
790fe579 | 5636 | if (ea_name == NULL) |
1da177e4 LT |
5637 | name_len = 0; |
5638 | else | |
50c2f753 | 5639 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5640 | |
dae5dbdb | 5641 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5642 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5643 | /* BB find max SMB PDU from sess */ |
5644 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5645 | pSMB->MaxSetupCount = 0; |
5646 | pSMB->Reserved = 0; | |
5647 | pSMB->Flags = 0; | |
5648 | pSMB->Timeout = 0; | |
5649 | pSMB->Reserved2 = 0; | |
5650 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5651 | InformationLevel) - 4; |
1da177e4 LT |
5652 | offset = param_offset + params; |
5653 | pSMB->InformationLevel = | |
5654 | cpu_to_le16(SMB_SET_FILE_EA); | |
5655 | ||
5656 | parm_data = | |
5657 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5658 | offset); | |
5659 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5660 | pSMB->DataOffset = cpu_to_le16(offset); | |
5661 | pSMB->SetupCount = 1; | |
5662 | pSMB->Reserved3 = 0; | |
5663 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5664 | byte_count = 3 /* pad */ + params + count; | |
5665 | pSMB->DataCount = cpu_to_le16(count); | |
5666 | parm_data->list_len = cpu_to_le32(count); | |
5667 | parm_data->list[0].EA_flags = 0; | |
5668 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5669 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5670 | /* EA names are always ASCII */ |
790fe579 | 5671 | if (ea_name) |
50c2f753 | 5672 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5673 | parm_data->list[0].name[name_len] = 0; |
5674 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5675 | /* caller ensures that ea_value_len is less than 64K but | |
5676 | we need to ensure that it fits within the smb */ | |
5677 | ||
50c2f753 SF |
5678 | /*BB add length check to see if it would fit in |
5679 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5680 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5681 | if (ea_value_len) | |
50c2f753 SF |
5682 | memcpy(parm_data->list[0].name+name_len+1, |
5683 | ea_value, ea_value_len); | |
1da177e4 LT |
5684 | |
5685 | pSMB->TotalDataCount = pSMB->DataCount; | |
5686 | pSMB->ParameterCount = cpu_to_le16(params); | |
5687 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5688 | pSMB->Reserved4 = 0; | |
5689 | pSMB->hdr.smb_buf_length += byte_count; | |
5690 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5691 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5692 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5693 | if (rc) |
1da177e4 | 5694 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); |
1da177e4 LT |
5695 | |
5696 | cifs_buf_release(pSMB); | |
5697 | ||
5698 | if (rc == -EAGAIN) | |
5699 | goto SetEARetry; | |
5700 | ||
5701 | return rc; | |
5702 | } | |
5703 | ||
5704 | #endif |