]>
Commit | Line | Data |
---|---|---|
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> | |
33 | #include <linux/posix_acl_xattr.h> | |
34 | #include <asm/uaccess.h> | |
35 | #include "cifspdu.h" | |
36 | #include "cifsglob.h" | |
d0d66c44 | 37 | #include "cifsacl.h" |
1da177e4 LT |
38 | #include "cifsproto.h" |
39 | #include "cifs_unicode.h" | |
40 | #include "cifs_debug.h" | |
41 | ||
42 | #ifdef CONFIG_CIFS_POSIX | |
43 | static struct { | |
44 | int index; | |
45 | char *name; | |
46 | } protocols[] = { | |
3979877e SF |
47 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
48 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 49 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 50 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 51 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 52 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
53 | {BAD_PROT, "\2"} |
54 | }; | |
55 | #else | |
56 | static struct { | |
57 | int index; | |
58 | char *name; | |
59 | } protocols[] = { | |
3979877e SF |
60 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
61 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 62 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 63 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 64 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
65 | {BAD_PROT, "\2"} |
66 | }; | |
67 | #endif | |
68 | ||
3979877e SF |
69 | /* define the number of elements in the cifs dialect array */ |
70 | #ifdef CONFIG_CIFS_POSIX | |
71 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 72 | #define CIFS_NUM_PROT 4 |
3979877e SF |
73 | #else |
74 | #define CIFS_NUM_PROT 2 | |
75 | #endif /* CIFS_WEAK_PW_HASH */ | |
76 | #else /* not posix */ | |
77 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 78 | #define CIFS_NUM_PROT 3 |
3979877e SF |
79 | #else |
80 | #define CIFS_NUM_PROT 1 | |
81 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
82 | #endif /* CIFS_POSIX */ | |
83 | ||
1da177e4 LT |
84 | /* Mark as invalid, all open files on tree connections since they |
85 | were closed when session to server was lost */ | |
790fe579 | 86 | static void mark_open_files_invalid(struct cifsTconInfo *pTcon) |
1da177e4 LT |
87 | { |
88 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
89 | struct list_head *tmp; |
90 | struct list_head *tmp1; | |
1da177e4 LT |
91 | |
92 | /* list all files open on tree connection and mark them invalid */ | |
93 | write_lock(&GlobalSMBSeslock); | |
94 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { | |
790fe579 | 95 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 96 | open_file->invalidHandle = true; |
3bc303c2 | 97 | open_file->oplock_break_cancelled = true; |
1da177e4 LT |
98 | } |
99 | write_unlock(&GlobalSMBSeslock); | |
09d1db5c SF |
100 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
101 | to this tcon */ | |
1da177e4 LT |
102 | } |
103 | ||
9162ab20 JL |
104 | /* reconnect the socket, tcon, and smb session if needed */ |
105 | static int | |
106 | cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command) | |
107 | { | |
108 | int rc = 0; | |
109 | struct cifsSesInfo *ses; | |
110 | struct TCP_Server_Info *server; | |
111 | struct nls_table *nls_codepage; | |
112 | ||
113 | /* | |
114 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
115 | * tcp and smb session status done differently for those three - in the | |
116 | * calling routine | |
117 | */ | |
118 | if (!tcon) | |
119 | return 0; | |
120 | ||
121 | ses = tcon->ses; | |
122 | server = ses->server; | |
123 | ||
124 | /* | |
125 | * only tree disconnect, open, and write, (and ulogoff which does not | |
126 | * have tcon) are allowed as we start force umount | |
127 | */ | |
128 | if (tcon->tidStatus == CifsExiting) { | |
129 | if (smb_command != SMB_COM_WRITE_ANDX && | |
130 | smb_command != SMB_COM_OPEN_ANDX && | |
131 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
132 | cFYI(1, ("can not send cmd %d while umounting", | |
133 | smb_command)); | |
134 | return -ENODEV; | |
135 | } | |
136 | } | |
137 | ||
138 | if (ses->status == CifsExiting) | |
139 | return -EIO; | |
140 | ||
141 | /* | |
142 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
143 | * greater than cifs socket timeout which is 7 seconds | |
144 | */ | |
145 | while (server->tcpStatus == CifsNeedReconnect) { | |
146 | wait_event_interruptible_timeout(server->response_q, | |
147 | (server->tcpStatus == CifsGood), 10 * HZ); | |
148 | ||
149 | /* is TCP session is reestablished now ?*/ | |
150 | if (server->tcpStatus != CifsNeedReconnect) | |
151 | break; | |
152 | ||
153 | /* | |
154 | * on "soft" mounts we wait once. Hard mounts keep | |
155 | * retrying until process is killed or server comes | |
156 | * back on-line | |
157 | */ | |
158 | if (!tcon->retry || ses->status == CifsExiting) { | |
159 | cFYI(1, ("gave up waiting on reconnect in smb_init")); | |
160 | return -EHOSTDOWN; | |
161 | } | |
162 | } | |
163 | ||
164 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
165 | return 0; | |
166 | ||
167 | nls_codepage = load_nls_default(); | |
168 | ||
169 | /* | |
170 | * need to prevent multiple threads trying to simultaneously | |
171 | * reconnect the same SMB session | |
172 | */ | |
d7b619cf | 173 | mutex_lock(&ses->session_mutex); |
9162ab20 JL |
174 | if (ses->need_reconnect) |
175 | rc = cifs_setup_session(0, ses, nls_codepage); | |
176 | ||
177 | /* do we need to reconnect tcon? */ | |
178 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 179 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
180 | goto out; |
181 | } | |
182 | ||
183 | mark_open_files_invalid(tcon); | |
184 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 185 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
186 | cFYI(1, ("reconnect tcon rc = %d", rc)); |
187 | ||
188 | if (rc) | |
189 | goto out; | |
190 | ||
191 | /* | |
192 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
193 | * size shrinking | |
194 | */ | |
195 | atomic_inc(&tconInfoReconnectCount); | |
196 | ||
197 | /* tell server Unix caps we support */ | |
198 | if (ses->capabilities & CAP_UNIX) | |
199 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
200 | ||
201 | /* | |
202 | * Removed call to reopen open files here. It is safer (and faster) to | |
203 | * reopen files one at a time as needed in read and write. | |
204 | * | |
205 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
206 | */ | |
207 | ||
208 | out: | |
209 | /* | |
210 | * Check if handle based operation so we know whether we can continue | |
211 | * or not without returning to caller to reset file handle | |
212 | */ | |
213 | switch (smb_command) { | |
214 | case SMB_COM_READ_ANDX: | |
215 | case SMB_COM_WRITE_ANDX: | |
216 | case SMB_COM_CLOSE: | |
217 | case SMB_COM_FIND_CLOSE2: | |
218 | case SMB_COM_LOCKING_ANDX: | |
219 | rc = -EAGAIN; | |
220 | } | |
221 | ||
222 | unload_nls(nls_codepage); | |
223 | return rc; | |
224 | } | |
225 | ||
ad7a2926 SF |
226 | /* Allocate and return pointer to an SMB request buffer, and set basic |
227 | SMB information in the SMB header. If the return code is zero, this | |
228 | function must have filled in request_buf pointer */ | |
1da177e4 LT |
229 | static int |
230 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
ad7a2926 | 231 | void **request_buf) |
1da177e4 LT |
232 | { |
233 | int rc = 0; | |
234 | ||
9162ab20 | 235 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 236 | if (rc) |
1da177e4 LT |
237 | return rc; |
238 | ||
239 | *request_buf = cifs_small_buf_get(); | |
240 | if (*request_buf == NULL) { | |
241 | /* BB should we add a retry in here if not a writepage? */ | |
242 | return -ENOMEM; | |
243 | } | |
244 | ||
63135e08 | 245 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 246 | tcon, wct); |
1da177e4 | 247 | |
790fe579 SF |
248 | if (tcon != NULL) |
249 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 250 | |
1da177e4 | 251 | return rc; |
5815449d SF |
252 | } |
253 | ||
12b3b8ff | 254 | int |
50c2f753 | 255 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 256 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
257 | { |
258 | int rc; | |
50c2f753 | 259 | struct smb_hdr *buffer; |
12b3b8ff | 260 | |
5815449d | 261 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 262 | if (rc) |
12b3b8ff SF |
263 | return rc; |
264 | ||
04fdabe1 | 265 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
266 | buffer->Mid = GetNextMid(ses->server); |
267 | if (ses->capabilities & CAP_UNICODE) | |
268 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 269 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
270 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
271 | ||
272 | /* uid, tid can stay at zero as set in header assemble */ | |
273 | ||
50c2f753 | 274 | /* BB add support for turning on the signing when |
12b3b8ff SF |
275 | this function is used after 1st of session setup requests */ |
276 | ||
277 | return rc; | |
278 | } | |
1da177e4 LT |
279 | |
280 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
281 | static int | |
282 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
283 | void **request_buf /* returned */ , | |
284 | void **response_buf /* returned */ ) | |
285 | { | |
286 | int rc = 0; | |
287 | ||
9162ab20 | 288 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 289 | if (rc) |
1da177e4 LT |
290 | return rc; |
291 | ||
292 | *request_buf = cifs_buf_get(); | |
293 | if (*request_buf == NULL) { | |
294 | /* BB should we add a retry in here if not a writepage? */ | |
295 | return -ENOMEM; | |
296 | } | |
297 | /* Although the original thought was we needed the response buf for */ | |
298 | /* potential retries of smb operations it turns out we can determine */ | |
299 | /* from the mid flags when the request buffer can be resent without */ | |
300 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 301 | if (response_buf) |
50c2f753 | 302 | *response_buf = *request_buf; |
1da177e4 LT |
303 | |
304 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 305 | wct); |
1da177e4 | 306 | |
790fe579 SF |
307 | if (tcon != NULL) |
308 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 309 | |
1da177e4 LT |
310 | return rc; |
311 | } | |
312 | ||
50c2f753 | 313 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 LT |
314 | { |
315 | int rc = -EINVAL; | |
316 | int total_size; | |
50c2f753 | 317 | char *pBCC; |
1da177e4 LT |
318 | |
319 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
320 | /* check for parm and data offset going beyond end of smb */ | |
790fe579 SF |
321 | if (pSMB->hdr.WordCount >= 10) { |
322 | if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
1da177e4 LT |
323 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { |
324 | /* check that bcc is at least as big as parms + data */ | |
325 | /* check that bcc is less than negotiated smb buffer */ | |
326 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
790fe579 | 327 | if (total_size < 512) { |
c18c842b | 328 | total_size += |
63135e08 | 329 | le16_to_cpu(pSMB->t2_rsp.DataCount); |
1da177e4 | 330 | /* BCC le converted in SendReceive */ |
50c2f753 | 331 | pBCC = (pSMB->hdr.WordCount * 2) + |
09d1db5c | 332 | sizeof(struct smb_hdr) + |
1da177e4 | 333 | (char *)pSMB; |
790fe579 | 334 | if ((total_size <= (*(u16 *)pBCC)) && |
50c2f753 | 335 | (total_size < |
1da177e4 LT |
336 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { |
337 | return 0; | |
338 | } | |
1da177e4 LT |
339 | } |
340 | } | |
341 | } | |
50c2f753 | 342 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 LT |
343 | sizeof(struct smb_t2_rsp) + 16); |
344 | return rc; | |
345 | } | |
346 | int | |
347 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
348 | { | |
349 | NEGOTIATE_REQ *pSMB; | |
350 | NEGOTIATE_RSP *pSMBr; | |
351 | int rc = 0; | |
352 | int bytes_returned; | |
3979877e | 353 | int i; |
50c2f753 | 354 | struct TCP_Server_Info *server; |
1da177e4 | 355 | u16 count; |
750d1151 | 356 | unsigned int secFlags; |
733f99ac | 357 | u16 dialect; |
1da177e4 | 358 | |
790fe579 | 359 | if (ses->server) |
1da177e4 LT |
360 | server = ses->server; |
361 | else { | |
362 | rc = -EIO; | |
363 | return rc; | |
364 | } | |
365 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
366 | (void **) &pSMB, (void **) &pSMBr); | |
367 | if (rc) | |
368 | return rc; | |
750d1151 SF |
369 | |
370 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 371 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 372 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 SF |
373 | else /* if override flags set only sign/seal OR them with global auth */ |
374 | secFlags = extended_security | ses->overrideSecFlg; | |
375 | ||
762e5ab7 | 376 | cFYI(1, ("secFlags 0x%x", secFlags)); |
f40c5628 | 377 | |
1982c344 | 378 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 379 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 380 | |
100c1ddc | 381 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 382 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d SF |
383 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
384 | cFYI(1, ("Kerberos only mechanism, enable extended security")); | |
385 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
386 | } | |
ac683924 SF |
387 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
388 | else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) | |
389 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
390 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
391 | cFYI(1, ("NTLMSSP only mechanism, enable extended security")); | |
392 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
393 | } | |
394 | #endif | |
50c2f753 | 395 | |
3979877e | 396 | count = 0; |
50c2f753 | 397 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
398 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
399 | count += strlen(protocols[i].name) + 1; | |
400 | /* null at end of source and target buffers anyway */ | |
401 | } | |
1da177e4 LT |
402 | pSMB->hdr.smb_buf_length += count; |
403 | pSMB->ByteCount = cpu_to_le16(count); | |
404 | ||
405 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
406 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 407 | if (rc != 0) |
254e55ed SF |
408 | goto neg_err_exit; |
409 | ||
733f99ac | 410 | dialect = le16_to_cpu(pSMBr->DialectIndex); |
790fe579 | 411 | cFYI(1, ("Dialect: %d", dialect)); |
254e55ed | 412 | /* Check wct = 1 error case */ |
790fe579 | 413 | if ((pSMBr->hdr.WordCount < 13) || (dialect == BAD_PROT)) { |
254e55ed | 414 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 415 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
416 | could not negotiate a common dialect */ |
417 | rc = -EOPNOTSUPP; | |
418 | goto neg_err_exit; | |
50c2f753 | 419 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 420 | } else if ((pSMBr->hdr.WordCount == 13) |
733f99ac AV |
421 | && ((dialect == LANMAN_PROT) |
422 | || (dialect == LANMAN2_PROT))) { | |
b815f1e5 | 423 | __s16 tmp; |
50c2f753 | 424 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 425 | |
790fe579 | 426 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 427 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
428 | server->secType = LANMAN; |
429 | else { | |
430 | cERROR(1, ("mount failed weak security disabled" | |
431 | " in /proc/fs/cifs/SecurityFlags")); | |
3979877e SF |
432 | rc = -EOPNOTSUPP; |
433 | goto neg_err_exit; | |
50c2f753 | 434 | } |
254e55ed SF |
435 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
436 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
437 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 438 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 439 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
440 | GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey); |
441 | /* even though we do not use raw we might as well set this | |
442 | accurately, in case we ever find a need for it */ | |
790fe579 | 443 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 444 | server->max_rw = 0xFF00; |
254e55ed SF |
445 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
446 | } else { | |
eca6acf9 | 447 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
448 | server->capabilities = CAP_MPX_MODE; |
449 | } | |
b815f1e5 | 450 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 451 | if (tmp == -1) { |
25ee4a98 SF |
452 | /* OS/2 often does not set timezone therefore |
453 | * we must use server time to calc time zone. | |
b815f1e5 SF |
454 | * Could deviate slightly from the right zone. |
455 | * Smallest defined timezone difference is 15 minutes | |
456 | * (i.e. Nepal). Rounding up/down is done to match | |
457 | * this requirement. | |
25ee4a98 | 458 | */ |
b815f1e5 | 459 | int val, seconds, remain, result; |
25ee4a98 SF |
460 | struct timespec ts, utc; |
461 | utc = CURRENT_TIME; | |
c4a2c08d JL |
462 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
463 | rsp->SrvTime.Time, 0); | |
50c2f753 SF |
464 | cFYI(1, ("SrvTime %d sec since 1970 (utc: %d) diff: %d", |
465 | (int)ts.tv_sec, (int)utc.tv_sec, | |
25ee4a98 | 466 | (int)(utc.tv_sec - ts.tv_sec))); |
b815f1e5 | 467 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 468 | seconds = abs(val); |
947a5067 | 469 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 470 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 471 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 472 | result += MIN_TZ_ADJ; |
790fe579 | 473 | if (val < 0) |
ad7a2926 | 474 | result = -result; |
b815f1e5 | 475 | server->timeAdj = result; |
25ee4a98 | 476 | } else { |
b815f1e5 SF |
477 | server->timeAdj = (int)tmp; |
478 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 479 | } |
790fe579 | 480 | cFYI(1, ("server->timeAdj: %d seconds", server->timeAdj)); |
25ee4a98 | 481 | |
3979877e | 482 | |
254e55ed | 483 | /* BB get server time for time conversions and add |
50c2f753 | 484 | code to use it and timezone since this is not UTC */ |
3979877e | 485 | |
50c2f753 | 486 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 487 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
254e55ed SF |
488 | memcpy(server->cryptKey, rsp->EncryptionKey, |
489 | CIFS_CRYPTO_KEY_SIZE); | |
490 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
491 | rc = -EIO; /* need cryptkey unless plain text */ | |
492 | goto neg_err_exit; | |
493 | } | |
3979877e | 494 | |
790fe579 | 495 | cFYI(1, ("LANMAN negotiated")); |
254e55ed SF |
496 | /* we will not end up setting signing flags - as no signing |
497 | was in LANMAN and server did not return the flags on */ | |
498 | goto signing_check; | |
7c7b25bc | 499 | #else /* weak security disabled */ |
790fe579 | 500 | } else if (pSMBr->hdr.WordCount == 13) { |
50c2f753 | 501 | cERROR(1, ("mount failed, cifs module not built " |
254e55ed | 502 | "with CIFS_WEAK_PW_HASH support")); |
7c7b25bc SF |
503 | rc = -EOPNOTSUPP; |
504 | #endif /* WEAK_PW_HASH */ | |
254e55ed | 505 | goto neg_err_exit; |
790fe579 | 506 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
507 | /* unknown wct */ |
508 | rc = -EOPNOTSUPP; | |
509 | goto neg_err_exit; | |
510 | } | |
511 | /* else wct == 17 NTLM */ | |
512 | server->secMode = pSMBr->SecurityMode; | |
790fe579 SF |
513 | if ((server->secMode & SECMODE_USER) == 0) |
514 | cFYI(1, ("share mode security")); | |
bdc4bf6e | 515 | |
790fe579 | 516 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 517 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 518 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 519 | #endif /* CIFS_WEAK_PW_HASH */ |
50c2f753 | 520 | cERROR(1, ("Server requests plain text password" |
254e55ed | 521 | " but client support disabled")); |
9312f675 | 522 | |
790fe579 | 523 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 524 | server->secType = NTLMv2; |
790fe579 | 525 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 526 | server->secType = NTLM; |
790fe579 | 527 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 528 | server->secType = NTLMv2; |
a013689d SF |
529 | else if (secFlags & CIFSSEC_MAY_KRB5) |
530 | server->secType = Kerberos; | |
ac683924 | 531 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 532 | server->secType = RawNTLMSSP; |
a013689d SF |
533 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
534 | server->secType = LANMAN; | |
535 | /* #ifdef CONFIG_CIFS_EXPERIMENTAL | |
536 | else if (secFlags & CIFSSEC_MAY_PLNTXT) | |
537 | server->secType = ?? | |
538 | #endif */ | |
539 | else { | |
540 | rc = -EOPNOTSUPP; | |
541 | cERROR(1, ("Invalid security type")); | |
542 | goto neg_err_exit; | |
543 | } | |
544 | /* else ... any others ...? */ | |
254e55ed SF |
545 | |
546 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
547 | little endian */ | |
548 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
549 | /* probably no need to store and check maxvcs */ | |
550 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 551 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 552 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
90c81e0b | 553 | cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf)); |
254e55ed SF |
554 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); |
555 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
b815f1e5 SF |
556 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
557 | server->timeAdj *= 60; | |
254e55ed SF |
558 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
559 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
560 | CIFS_CRYPTO_KEY_SIZE); | |
561 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
562 | && (pSMBr->EncryptionKeyLength == 0)) { | |
563 | /* decode security blob */ | |
564 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
565 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
566 | goto neg_err_exit; | |
567 | } | |
1da177e4 | 568 | |
254e55ed SF |
569 | /* BB might be helpful to save off the domain of server here */ |
570 | ||
50c2f753 | 571 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed SF |
572 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
573 | count = pSMBr->ByteCount; | |
e187e44e | 574 | if (count < 16) { |
254e55ed | 575 | rc = -EIO; |
e187e44e JL |
576 | goto neg_err_exit; |
577 | } | |
e7ddee90 JL |
578 | read_lock(&cifs_tcp_ses_lock); |
579 | if (server->srv_count > 1) { | |
580 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
581 | if (memcmp(server->server_GUID, |
582 | pSMBr->u.extended_response. | |
583 | GUID, 16) != 0) { | |
584 | cFYI(1, ("server UID changed")); | |
254e55ed | 585 | memcpy(server->server_GUID, |
e187e44e JL |
586 | pSMBr->u.extended_response.GUID, |
587 | 16); | |
588 | } | |
e7ddee90 JL |
589 | } else { |
590 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
591 | memcpy(server->server_GUID, |
592 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 593 | } |
e187e44e JL |
594 | |
595 | if (count == 16) { | |
596 | server->secType = RawNTLMSSP; | |
254e55ed SF |
597 | } else { |
598 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
599 | SecurityBlob, | |
600 | count - 16, | |
601 | &server->secType); | |
ef571cad | 602 | if (rc == 1) |
e545937a | 603 | rc = 0; |
ef571cad | 604 | else |
254e55ed | 605 | rc = -EINVAL; |
1da177e4 | 606 | } |
254e55ed SF |
607 | } else |
608 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
609 | ||
6344a423 | 610 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 611 | signing_check: |
6344a423 | 612 | #endif |
762e5ab7 SF |
613 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
614 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
615 | so if this is zero it means that signing is disabled */ | |
616 | cFYI(1, ("Signing disabled")); | |
abb63d6c | 617 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
762e5ab7 | 618 | cERROR(1, ("Server requires " |
7111d214 JL |
619 | "packet signing to be enabled in " |
620 | "/proc/fs/cifs/SecurityFlags.")); | |
abb63d6c SF |
621 | rc = -EOPNOTSUPP; |
622 | } | |
50c2f753 | 623 | server->secMode &= |
254e55ed | 624 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
625 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
626 | /* signing required */ | |
38c10a1d | 627 | cFYI(1, ("Must sign - secFlags 0x%x", secFlags)); |
762e5ab7 SF |
628 | if ((server->secMode & |
629 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
630 | cERROR(1, | |
631 | ("signing required but server lacks support")); | |
38c10a1d | 632 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
633 | } else |
634 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
635 | } else { | |
636 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 637 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 638 | server->secMode &= |
254e55ed | 639 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 640 | } |
50c2f753 SF |
641 | |
642 | neg_err_exit: | |
4a6d87f1 | 643 | cifs_buf_release(pSMB); |
254e55ed | 644 | |
790fe579 | 645 | cFYI(1, ("negprot rc %d", rc)); |
1da177e4 LT |
646 | return rc; |
647 | } | |
648 | ||
649 | int | |
650 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
651 | { | |
652 | struct smb_hdr *smb_buffer; | |
1da177e4 | 653 | int rc = 0; |
1da177e4 LT |
654 | |
655 | cFYI(1, ("In tree disconnect")); | |
1da177e4 | 656 | |
f1987b44 JL |
657 | /* BB: do we need to check this? These should never be NULL. */ |
658 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
659 | return -EIO; | |
1da177e4 | 660 | |
f1987b44 JL |
661 | /* |
662 | * No need to return error on this operation if tid invalidated and | |
663 | * closed on server already e.g. due to tcp session crashing. Also, | |
664 | * the tcon is no longer on the list, so no need to take lock before | |
665 | * checking this. | |
666 | */ | |
268875b9 | 667 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 668 | return 0; |
1da177e4 | 669 | |
50c2f753 | 670 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 671 | (void **)&smb_buffer); |
f1987b44 | 672 | if (rc) |
1da177e4 | 673 | return rc; |
133672ef SF |
674 | |
675 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 676 | if (rc) |
966ca923 | 677 | cFYI(1, ("Tree disconnect failed %d", rc)); |
1da177e4 | 678 | |
50c2f753 | 679 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 680 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
681 | if (rc == -EAGAIN) |
682 | rc = 0; | |
683 | ||
684 | return rc; | |
685 | } | |
686 | ||
687 | int | |
688 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
689 | { | |
1da177e4 LT |
690 | LOGOFF_ANDX_REQ *pSMB; |
691 | int rc = 0; | |
1da177e4 LT |
692 | |
693 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
3b795210 | 694 | |
14fbf50d JL |
695 | /* |
696 | * BB: do we need to check validity of ses and server? They should | |
697 | * always be valid since we have an active reference. If not, that | |
698 | * should probably be a BUG() | |
699 | */ | |
700 | if (!ses || !ses->server) | |
3b795210 SF |
701 | return -EIO; |
702 | ||
d7b619cf | 703 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
704 | if (ses->need_reconnect) |
705 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
706 | already closed due to reconnect */ | |
1da177e4 LT |
707 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
708 | if (rc) { | |
d7b619cf | 709 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
710 | return rc; |
711 | } | |
712 | ||
3b795210 | 713 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 714 | |
3b795210 | 715 | if (ses->server->secMode & |
1da177e4 LT |
716 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
717 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
718 | |
719 | pSMB->hdr.Uid = ses->Suid; | |
720 | ||
721 | pSMB->AndXCommand = 0xFF; | |
133672ef | 722 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 723 | session_already_dead: |
d7b619cf | 724 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
725 | |
726 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 727 | since server closed smb session, no sense reporting |
1da177e4 LT |
728 | error */ |
729 | if (rc == -EAGAIN) | |
730 | rc = 0; | |
731 | return rc; | |
732 | } | |
733 | ||
2d785a50 SF |
734 | int |
735 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
736 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
737 | { | |
738 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
739 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
740 | struct unlink_psx_rq *pRqD; | |
741 | int name_len; | |
742 | int rc = 0; | |
743 | int bytes_returned = 0; | |
744 | __u16 params, param_offset, offset, byte_count; | |
745 | ||
746 | cFYI(1, ("In POSIX delete")); | |
747 | PsxDelete: | |
748 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
749 | (void **) &pSMBr); | |
750 | if (rc) | |
751 | return rc; | |
752 | ||
753 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
754 | name_len = | |
755 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
756 | PATH_MAX, nls_codepage, remap); | |
757 | name_len++; /* trailing null */ | |
758 | name_len *= 2; | |
759 | } else { /* BB add path length overrun check */ | |
760 | name_len = strnlen(fileName, PATH_MAX); | |
761 | name_len++; /* trailing null */ | |
762 | strncpy(pSMB->FileName, fileName, name_len); | |
763 | } | |
764 | ||
765 | params = 6 + name_len; | |
766 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
767 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
768 | pSMB->MaxSetupCount = 0; | |
769 | pSMB->Reserved = 0; | |
770 | pSMB->Flags = 0; | |
771 | pSMB->Timeout = 0; | |
772 | pSMB->Reserved2 = 0; | |
773 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
774 | InformationLevel) - 4; | |
775 | offset = param_offset + params; | |
776 | ||
777 | /* Setup pointer to Request Data (inode type) */ | |
778 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
779 | pRqD->type = cpu_to_le16(type); | |
780 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
781 | pSMB->DataOffset = cpu_to_le16(offset); | |
782 | pSMB->SetupCount = 1; | |
783 | pSMB->Reserved3 = 0; | |
784 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
785 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
786 | ||
787 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
788 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
789 | pSMB->ParameterCount = cpu_to_le16(params); | |
790 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
791 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
792 | pSMB->Reserved4 = 0; | |
793 | pSMB->hdr.smb_buf_length += byte_count; | |
794 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
795 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
796 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 797 | if (rc) |
2d785a50 | 798 | cFYI(1, ("Posix delete returned %d", rc)); |
2d785a50 SF |
799 | cifs_buf_release(pSMB); |
800 | ||
801 | cifs_stats_inc(&tcon->num_deletes); | |
802 | ||
803 | if (rc == -EAGAIN) | |
804 | goto PsxDelete; | |
805 | ||
806 | return rc; | |
807 | } | |
808 | ||
1da177e4 | 809 | int |
737b758c SF |
810 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
811 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
812 | { |
813 | DELETE_FILE_REQ *pSMB = NULL; | |
814 | DELETE_FILE_RSP *pSMBr = NULL; | |
815 | int rc = 0; | |
816 | int bytes_returned; | |
817 | int name_len; | |
818 | ||
819 | DelFileRetry: | |
820 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
821 | (void **) &pSMBr); | |
822 | if (rc) | |
823 | return rc; | |
824 | ||
825 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
826 | name_len = | |
50c2f753 | 827 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 828 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
829 | name_len++; /* trailing null */ |
830 | name_len *= 2; | |
09d1db5c | 831 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
832 | name_len = strnlen(fileName, PATH_MAX); |
833 | name_len++; /* trailing null */ | |
834 | strncpy(pSMB->fileName, fileName, name_len); | |
835 | } | |
836 | pSMB->SearchAttributes = | |
837 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
838 | pSMB->BufferFormat = 0x04; | |
839 | pSMB->hdr.smb_buf_length += name_len + 1; | |
840 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
841 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
842 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 843 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 844 | if (rc) |
1da177e4 | 845 | cFYI(1, ("Error in RMFile = %d", rc)); |
1da177e4 LT |
846 | |
847 | cifs_buf_release(pSMB); | |
848 | if (rc == -EAGAIN) | |
849 | goto DelFileRetry; | |
850 | ||
851 | return rc; | |
852 | } | |
853 | ||
854 | int | |
50c2f753 | 855 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 856 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
857 | { |
858 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
859 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
860 | int rc = 0; | |
861 | int bytes_returned; | |
862 | int name_len; | |
863 | ||
864 | cFYI(1, ("In CIFSSMBRmDir")); | |
865 | RmDirRetry: | |
866 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
867 | (void **) &pSMBr); | |
868 | if (rc) | |
869 | return rc; | |
870 | ||
871 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
872 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
873 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
874 | name_len++; /* trailing null */ |
875 | name_len *= 2; | |
09d1db5c | 876 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
877 | name_len = strnlen(dirName, PATH_MAX); |
878 | name_len++; /* trailing null */ | |
879 | strncpy(pSMB->DirName, dirName, name_len); | |
880 | } | |
881 | ||
882 | pSMB->BufferFormat = 0x04; | |
883 | pSMB->hdr.smb_buf_length += name_len + 1; | |
884 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
885 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
886 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 887 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 888 | if (rc) |
1da177e4 | 889 | cFYI(1, ("Error in RMDir = %d", rc)); |
1da177e4 LT |
890 | |
891 | cifs_buf_release(pSMB); | |
892 | if (rc == -EAGAIN) | |
893 | goto RmDirRetry; | |
894 | return rc; | |
895 | } | |
896 | ||
897 | int | |
898 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 899 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
900 | { |
901 | int rc = 0; | |
902 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
903 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
904 | int bytes_returned; | |
905 | int name_len; | |
906 | ||
907 | cFYI(1, ("In CIFSSMBMkDir")); | |
908 | MkDirRetry: | |
909 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
910 | (void **) &pSMBr); | |
911 | if (rc) | |
912 | return rc; | |
913 | ||
914 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 915 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 916 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
917 | name_len++; /* trailing null */ |
918 | name_len *= 2; | |
09d1db5c | 919 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
920 | name_len = strnlen(name, PATH_MAX); |
921 | name_len++; /* trailing null */ | |
922 | strncpy(pSMB->DirName, name, name_len); | |
923 | } | |
924 | ||
925 | pSMB->BufferFormat = 0x04; | |
926 | pSMB->hdr.smb_buf_length += name_len + 1; | |
927 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
928 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
929 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 930 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 931 | if (rc) |
1da177e4 | 932 | cFYI(1, ("Error in Mkdir = %d", rc)); |
a5a2b489 | 933 | |
1da177e4 LT |
934 | cifs_buf_release(pSMB); |
935 | if (rc == -EAGAIN) | |
936 | goto MkDirRetry; | |
937 | return rc; | |
938 | } | |
939 | ||
2dd29d31 SF |
940 | int |
941 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 942 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 943 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
944 | const struct nls_table *nls_codepage, int remap) |
945 | { | |
946 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
947 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
948 | int name_len; | |
949 | int rc = 0; | |
950 | int bytes_returned = 0; | |
2dd29d31 | 951 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
952 | OPEN_PSX_REQ *pdata; |
953 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 SF |
954 | |
955 | cFYI(1, ("In POSIX Create")); | |
956 | PsxCreat: | |
957 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
958 | (void **) &pSMBr); | |
959 | if (rc) | |
960 | return rc; | |
961 | ||
962 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
963 | name_len = | |
964 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
965 | PATH_MAX, nls_codepage, remap); | |
966 | name_len++; /* trailing null */ | |
967 | name_len *= 2; | |
968 | } else { /* BB improve the check for buffer overruns BB */ | |
969 | name_len = strnlen(name, PATH_MAX); | |
970 | name_len++; /* trailing null */ | |
971 | strncpy(pSMB->FileName, name, name_len); | |
972 | } | |
973 | ||
974 | params = 6 + name_len; | |
975 | count = sizeof(OPEN_PSX_REQ); | |
976 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
977 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
978 | pSMB->MaxSetupCount = 0; | |
979 | pSMB->Reserved = 0; | |
980 | pSMB->Flags = 0; | |
981 | pSMB->Timeout = 0; | |
982 | pSMB->Reserved2 = 0; | |
983 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 984 | InformationLevel) - 4; |
2dd29d31 | 985 | offset = param_offset + params; |
2dd29d31 | 986 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 987 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 988 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 989 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
990 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
991 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
992 | pSMB->DataOffset = cpu_to_le16(offset); | |
993 | pSMB->SetupCount = 1; | |
994 | pSMB->Reserved3 = 0; | |
995 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
996 | byte_count = 3 /* pad */ + params + count; | |
997 | ||
998 | pSMB->DataCount = cpu_to_le16(count); | |
999 | pSMB->ParameterCount = cpu_to_le16(params); | |
1000 | pSMB->TotalDataCount = pSMB->DataCount; | |
1001 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1002 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1003 | pSMB->Reserved4 = 0; | |
50c2f753 | 1004 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1005 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1006 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1007 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1008 | if (rc) { | |
1009 | cFYI(1, ("Posix create returned %d", rc)); | |
1010 | goto psx_create_err; | |
1011 | } | |
1012 | ||
790fe579 | 1013 | cFYI(1, ("copying inode info")); |
2dd29d31 SF |
1014 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1015 | ||
1016 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1017 | rc = -EIO; /* bad smb */ | |
1018 | goto psx_create_err; | |
1019 | } | |
1020 | ||
1021 | /* copy return information to pRetData */ | |
50c2f753 | 1022 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1023 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1024 | |
2dd29d31 | 1025 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1026 | if (netfid) |
2dd29d31 SF |
1027 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1028 | /* Let caller know file was created so we can set the mode. */ | |
1029 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1030 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1031 | *pOplock |= CIFS_CREATE_ACTION; |
1032 | /* check to make sure response data is there */ | |
8f2376ad CG |
1033 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1034 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
90c81e0b | 1035 | cFYI(DBG2, ("unknown type")); |
cbac3cba | 1036 | } else { |
790fe579 | 1037 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1038 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
50c2f753 | 1039 | cERROR(1, ("Open response data too small")); |
8f2376ad | 1040 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1041 | goto psx_create_err; |
1042 | } | |
50c2f753 | 1043 | memcpy((char *) pRetData, |
cbac3cba | 1044 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1045 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1046 | } |
2dd29d31 SF |
1047 | |
1048 | psx_create_err: | |
1049 | cifs_buf_release(pSMB); | |
1050 | ||
65bc98b0 SF |
1051 | if (posix_flags & SMB_O_DIRECTORY) |
1052 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1053 | else | |
1054 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1055 | |
1056 | if (rc == -EAGAIN) | |
1057 | goto PsxCreat; | |
1058 | ||
50c2f753 | 1059 | return rc; |
2dd29d31 SF |
1060 | } |
1061 | ||
a9d02ad4 SF |
1062 | static __u16 convert_disposition(int disposition) |
1063 | { | |
1064 | __u16 ofun = 0; | |
1065 | ||
1066 | switch (disposition) { | |
1067 | case FILE_SUPERSEDE: | |
1068 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1069 | break; | |
1070 | case FILE_OPEN: | |
1071 | ofun = SMBOPEN_OAPPEND; | |
1072 | break; | |
1073 | case FILE_CREATE: | |
1074 | ofun = SMBOPEN_OCREATE; | |
1075 | break; | |
1076 | case FILE_OPEN_IF: | |
1077 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1078 | break; | |
1079 | case FILE_OVERWRITE: | |
1080 | ofun = SMBOPEN_OTRUNC; | |
1081 | break; | |
1082 | case FILE_OVERWRITE_IF: | |
1083 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1084 | break; | |
1085 | default: | |
790fe579 | 1086 | cFYI(1, ("unknown disposition %d", disposition)); |
a9d02ad4 SF |
1087 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1088 | } | |
1089 | return ofun; | |
1090 | } | |
1091 | ||
35fc37d5 JL |
1092 | static int |
1093 | access_flags_to_smbopen_mode(const int access_flags) | |
1094 | { | |
1095 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1096 | ||
1097 | if (masked_flags == GENERIC_READ) | |
1098 | return SMBOPEN_READ; | |
1099 | else if (masked_flags == GENERIC_WRITE) | |
1100 | return SMBOPEN_WRITE; | |
1101 | ||
1102 | /* just go for read/write */ | |
1103 | return SMBOPEN_READWRITE; | |
1104 | } | |
1105 | ||
a9d02ad4 SF |
1106 | int |
1107 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1108 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1109 | const int access_flags, const int create_options, __u16 *netfid, |
1110 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1111 | const struct nls_table *nls_codepage, int remap) |
1112 | { | |
1113 | int rc = -EACCES; | |
1114 | OPENX_REQ *pSMB = NULL; | |
1115 | OPENX_RSP *pSMBr = NULL; | |
1116 | int bytes_returned; | |
1117 | int name_len; | |
1118 | __u16 count; | |
1119 | ||
1120 | OldOpenRetry: | |
1121 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1122 | (void **) &pSMBr); | |
1123 | if (rc) | |
1124 | return rc; | |
1125 | ||
1126 | pSMB->AndXCommand = 0xFF; /* none */ | |
1127 | ||
1128 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1129 | count = 1; /* account for one byte pad to word boundary */ | |
1130 | name_len = | |
1131 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1132 | fileName, PATH_MAX, nls_codepage, remap); | |
1133 | name_len++; /* trailing null */ | |
1134 | name_len *= 2; | |
1135 | } else { /* BB improve check for buffer overruns BB */ | |
1136 | count = 0; /* no pad */ | |
1137 | name_len = strnlen(fileName, PATH_MAX); | |
1138 | name_len++; /* trailing null */ | |
1139 | strncpy(pSMB->fileName, fileName, name_len); | |
1140 | } | |
1141 | if (*pOplock & REQ_OPLOCK) | |
1142 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1143 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1144 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1145 | |
a9d02ad4 | 1146 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1147 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1148 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1149 | /* set file as system file if special file such | |
1150 | as fifo and server expecting SFU style and | |
1151 | no Unix extensions */ | |
1152 | ||
790fe579 SF |
1153 | if (create_options & CREATE_OPTION_SPECIAL) |
1154 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1155 | else /* BB FIXME BB */ |
1156 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1157 | |
67750fb9 JL |
1158 | if (create_options & CREATE_OPTION_READONLY) |
1159 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1160 | |
1161 | /* BB FIXME BB */ | |
50c2f753 SF |
1162 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1163 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1164 | /* BB FIXME END BB */ |
3e87d803 SF |
1165 | |
1166 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1167 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1168 | count += name_len; |
1169 | pSMB->hdr.smb_buf_length += count; | |
1170 | ||
1171 | pSMB->ByteCount = cpu_to_le16(count); | |
1172 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1173 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1174 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a9d02ad4 SF |
1175 | cifs_stats_inc(&tcon->num_opens); |
1176 | if (rc) { | |
1177 | cFYI(1, ("Error in Open = %d", rc)); | |
1178 | } else { | |
1179 | /* BB verify if wct == 15 */ | |
1180 | ||
582d21e5 | 1181 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1182 | |
1183 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1184 | /* Let caller know file was created so we can set the mode. */ | |
1185 | /* Do we care about the CreateAction in any other cases? */ | |
1186 | /* BB FIXME BB */ | |
790fe579 | 1187 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1188 | *pOplock |= CIFS_CREATE_ACTION; */ |
1189 | /* BB FIXME END */ | |
1190 | ||
790fe579 | 1191 | if (pfile_info) { |
a9d02ad4 SF |
1192 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1193 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1194 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1195 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1196 | pfile_info->Attributes = |
50c2f753 | 1197 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1198 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1199 | pfile_info->AllocationSize = |
1200 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1201 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1202 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1203 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1204 | } |
1205 | } | |
1206 | ||
1207 | cifs_buf_release(pSMB); | |
1208 | if (rc == -EAGAIN) | |
1209 | goto OldOpenRetry; | |
1210 | return rc; | |
1211 | } | |
1212 | ||
1da177e4 LT |
1213 | int |
1214 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1215 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1216 | const int access_flags, const int create_options, __u16 *netfid, |
1217 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1218 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1219 | { |
1220 | int rc = -EACCES; | |
1221 | OPEN_REQ *pSMB = NULL; | |
1222 | OPEN_RSP *pSMBr = NULL; | |
1223 | int bytes_returned; | |
1224 | int name_len; | |
1225 | __u16 count; | |
1226 | ||
1227 | openRetry: | |
1228 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1229 | (void **) &pSMBr); | |
1230 | if (rc) | |
1231 | return rc; | |
1232 | ||
1233 | pSMB->AndXCommand = 0xFF; /* none */ | |
1234 | ||
1235 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1236 | count = 1; /* account for one byte pad to word boundary */ | |
1237 | name_len = | |
b1a45695 | 1238 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1239 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1240 | name_len++; /* trailing null */ |
1241 | name_len *= 2; | |
1242 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1243 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1244 | count = 0; /* no pad */ |
1245 | name_len = strnlen(fileName, PATH_MAX); | |
1246 | name_len++; /* trailing null */ | |
1247 | pSMB->NameLength = cpu_to_le16(name_len); | |
1248 | strncpy(pSMB->fileName, fileName, name_len); | |
1249 | } | |
1250 | if (*pOplock & REQ_OPLOCK) | |
1251 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1252 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1253 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1254 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1255 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1256 | /* set file as system file if special file such |
1257 | as fifo and server expecting SFU style and | |
1258 | no Unix extensions */ | |
790fe579 | 1259 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1260 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1261 | else | |
1262 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1263 | |
1da177e4 LT |
1264 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1265 | /* but it helps speed up case sensitive checks for other | |
1266 | servers such as Samba */ | |
1267 | if (tcon->ses->capabilities & CAP_UNIX) | |
1268 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1269 | ||
67750fb9 JL |
1270 | if (create_options & CREATE_OPTION_READONLY) |
1271 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1272 | ||
1da177e4 LT |
1273 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1274 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1275 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1276 | /* BB Expirement with various impersonation levels and verify */ |
1277 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1278 | pSMB->SecurityFlags = |
1279 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1280 | ||
1281 | count += name_len; | |
1282 | pSMB->hdr.smb_buf_length += count; | |
1283 | ||
1284 | pSMB->ByteCount = cpu_to_le16(count); | |
1285 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1286 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1287 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a4544347 | 1288 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 LT |
1289 | if (rc) { |
1290 | cFYI(1, ("Error in Open = %d", rc)); | |
1291 | } else { | |
09d1db5c | 1292 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1293 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1294 | /* Let caller know file was created so we can set the mode. */ | |
1295 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1296 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1297 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1298 | if (pfile_info) { |
61e74801 SF |
1299 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1300 | 36 /* CreationTime to Attributes */); | |
1301 | /* the file_info buf is endian converted by caller */ | |
1302 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1303 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1304 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1305 | pfile_info->DeletePending = 0; | |
1da177e4 | 1306 | } |
1da177e4 | 1307 | } |
a5a2b489 | 1308 | |
1da177e4 LT |
1309 | cifs_buf_release(pSMB); |
1310 | if (rc == -EAGAIN) | |
1311 | goto openRetry; | |
1312 | return rc; | |
1313 | } | |
1314 | ||
1da177e4 | 1315 | int |
50c2f753 SF |
1316 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1317 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1318 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1319 | { |
1320 | int rc = -EACCES; | |
1321 | READ_REQ *pSMB = NULL; | |
1322 | READ_RSP *pSMBr = NULL; | |
1323 | char *pReadData = NULL; | |
bfa0d75a | 1324 | int wct; |
ec637e3f SF |
1325 | int resp_buf_type = 0; |
1326 | struct kvec iov[1]; | |
1da177e4 | 1327 | |
790fe579 SF |
1328 | cFYI(1, ("Reading %d bytes on fid %d", count, netfid)); |
1329 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
bfa0d75a | 1330 | wct = 12; |
4c3130ef | 1331 | else { |
bfa0d75a | 1332 | wct = 10; /* old style read */ |
4c3130ef SF |
1333 | if ((lseek >> 32) > 0) { |
1334 | /* can not handle this big offset for old */ | |
1335 | return -EIO; | |
1336 | } | |
1337 | } | |
1da177e4 LT |
1338 | |
1339 | *nbytes = 0; | |
ec637e3f | 1340 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1341 | if (rc) |
1342 | return rc; | |
1343 | ||
1344 | /* tcon and ses pointer are checked in smb_init */ | |
1345 | if (tcon->ses->server == NULL) | |
1346 | return -ECONNABORTED; | |
1347 | ||
ec637e3f | 1348 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1349 | pSMB->Fid = netfid; |
1350 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1351 | if (wct == 12) |
bfa0d75a | 1352 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1353 | |
1da177e4 LT |
1354 | pSMB->Remaining = 0; |
1355 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1356 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1357 | if (wct == 12) |
bfa0d75a SF |
1358 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1359 | else { | |
1360 | /* old style read */ | |
50c2f753 | 1361 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1362 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1363 | pSMBW->ByteCount = 0; |
bfa0d75a | 1364 | } |
ec637e3f SF |
1365 | |
1366 | iov[0].iov_base = (char *)pSMB; | |
1367 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
a761ac57 | 1368 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
133672ef | 1369 | &resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR); |
a4544347 | 1370 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1371 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 LT |
1372 | if (rc) { |
1373 | cERROR(1, ("Send error in read = %d", rc)); | |
1374 | } else { | |
1375 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1376 | data_length = data_length << 16; | |
1377 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1378 | *nbytes = data_length; | |
1379 | ||
1380 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1381 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1382 | || (data_length > count)) { |
50c2f753 SF |
1383 | cFYI(1, ("bad length %d for count %d", |
1384 | data_length, count)); | |
1da177e4 LT |
1385 | rc = -EIO; |
1386 | *nbytes = 0; | |
1387 | } else { | |
ec637e3f | 1388 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1389 | le16_to_cpu(pSMBr->DataOffset); |
1390 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
50c2f753 SF |
1391 | cERROR(1,("Faulting on read rc = %d",rc)); |
1392 | rc = -EFAULT; | |
26f57364 | 1393 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1394 | if (*buf) |
50c2f753 | 1395 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1396 | } |
1397 | } | |
1da177e4 | 1398 | |
4b8f930f | 1399 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1400 | if (*buf) { |
1401 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1402 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1403 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1404 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1405 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1406 | /* return buffer to caller to free */ |
1407 | *buf = iov[0].iov_base; | |
790fe579 | 1408 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1409 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1410 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1411 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1412 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1413 | |
1414 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1415 | since file handle passed in no longer valid */ |
1416 | return rc; | |
1417 | } | |
1418 | ||
ec637e3f | 1419 | |
1da177e4 LT |
1420 | int |
1421 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1422 | const int netfid, const unsigned int count, | |
1423 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1424 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1425 | { |
1426 | int rc = -EACCES; | |
1427 | WRITE_REQ *pSMB = NULL; | |
1428 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1429 | int bytes_returned, wct; |
1da177e4 LT |
1430 | __u32 bytes_sent; |
1431 | __u16 byte_count; | |
1432 | ||
61de800d | 1433 | /* cFYI(1, ("write at %lld %d bytes", offset, count));*/ |
790fe579 | 1434 | if (tcon->ses == NULL) |
1c955187 SF |
1435 | return -ECONNABORTED; |
1436 | ||
790fe579 | 1437 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1438 | wct = 14; |
4c3130ef | 1439 | else { |
1c955187 | 1440 | wct = 12; |
4c3130ef SF |
1441 | if ((offset >> 32) > 0) { |
1442 | /* can not handle big offset for old srv */ | |
1443 | return -EIO; | |
1444 | } | |
1445 | } | |
1c955187 SF |
1446 | |
1447 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1448 | (void **) &pSMBr); |
1449 | if (rc) | |
1450 | return rc; | |
1451 | /* tcon and ses pointer are checked in smb_init */ | |
1452 | if (tcon->ses->server == NULL) | |
1453 | return -ECONNABORTED; | |
1454 | ||
1455 | pSMB->AndXCommand = 0xFF; /* none */ | |
1456 | pSMB->Fid = netfid; | |
1457 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1458 | if (wct == 14) |
1c955187 | 1459 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1460 | |
1da177e4 LT |
1461 | pSMB->Reserved = 0xFFFFFFFF; |
1462 | pSMB->WriteMode = 0; | |
1463 | pSMB->Remaining = 0; | |
1464 | ||
50c2f753 | 1465 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1466 | can send more if LARGE_WRITE_X capability returned by the server and if |
1467 | our buffer is big enough or if we convert to iovecs on socket writes | |
1468 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1469 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1470 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1471 | } else { | |
1472 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1473 | & ~0xFF; | |
1474 | } | |
1475 | ||
1476 | if (bytes_sent > count) | |
1477 | bytes_sent = count; | |
1478 | pSMB->DataOffset = | |
50c2f753 | 1479 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1480 | if (buf) |
61e74801 | 1481 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1482 | else if (ubuf) { |
1483 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1484 | cifs_buf_release(pSMB); |
1485 | return -EFAULT; | |
1486 | } | |
e30dcf3a | 1487 | } else if (count != 0) { |
1da177e4 LT |
1488 | /* No buffer */ |
1489 | cifs_buf_release(pSMB); | |
1490 | return -EINVAL; | |
e30dcf3a | 1491 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1492 | if (wct == 14) |
e30dcf3a | 1493 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1494 | else /* wct == 12 */ |
e30dcf3a | 1495 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1496 | |
1da177e4 LT |
1497 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1498 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1499 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1500 | |
790fe579 | 1501 | if (wct == 14) |
1c955187 | 1502 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1503 | else { /* old style write has byte count 4 bytes earlier |
1504 | so 4 bytes pad */ | |
1505 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1506 | (struct smb_com_writex_req *)pSMB; |
1507 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1508 | } | |
1da177e4 LT |
1509 | |
1510 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1511 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1512 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 LT |
1513 | if (rc) { |
1514 | cFYI(1, ("Send error in write = %d", rc)); | |
1515 | *nbytes = 0; | |
1516 | } else { | |
1517 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1518 | *nbytes = (*nbytes) << 16; | |
1519 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1520 | } | |
1521 | ||
1522 | cifs_buf_release(pSMB); | |
1523 | ||
50c2f753 | 1524 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1525 | since file handle passed in no longer valid */ |
1526 | ||
1527 | return rc; | |
1528 | } | |
1529 | ||
d6e04ae6 SF |
1530 | int |
1531 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1532 | const int netfid, const unsigned int count, |
3e84469d SF |
1533 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1534 | int n_vec, const int long_op) | |
1da177e4 LT |
1535 | { |
1536 | int rc = -EACCES; | |
1537 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1538 | int wct; |
d6e04ae6 | 1539 | int smb_hdr_len; |
ec637e3f | 1540 | int resp_buf_type = 0; |
1da177e4 | 1541 | |
fbec9ab9 JL |
1542 | *nbytes = 0; |
1543 | ||
790fe579 | 1544 | cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count)); |
ff7feac9 | 1545 | |
4c3130ef | 1546 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1547 | wct = 14; |
4c3130ef | 1548 | } else { |
8cc64c6e | 1549 | wct = 12; |
4c3130ef SF |
1550 | if ((offset >> 32) > 0) { |
1551 | /* can not handle big offset for old srv */ | |
1552 | return -EIO; | |
1553 | } | |
1554 | } | |
8cc64c6e | 1555 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1556 | if (rc) |
1557 | return rc; | |
1da177e4 LT |
1558 | /* tcon and ses pointer are checked in smb_init */ |
1559 | if (tcon->ses->server == NULL) | |
1560 | return -ECONNABORTED; | |
1561 | ||
d6e04ae6 | 1562 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1563 | pSMB->Fid = netfid; |
1564 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1565 | if (wct == 14) |
8cc64c6e | 1566 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1567 | pSMB->Reserved = 0xFFFFFFFF; |
1568 | pSMB->WriteMode = 0; | |
1569 | pSMB->Remaining = 0; | |
d6e04ae6 | 1570 | |
1da177e4 | 1571 | pSMB->DataOffset = |
50c2f753 | 1572 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1573 | |
3e84469d SF |
1574 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1575 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1576 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1577 | if (wct == 14) |
8cc64c6e SF |
1578 | pSMB->hdr.smb_buf_length += count+1; |
1579 | else /* wct == 12 */ | |
790fe579 SF |
1580 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1581 | if (wct == 14) | |
8cc64c6e SF |
1582 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1583 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1584 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1585 | (struct smb_com_writex_req *)pSMB; |
1586 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1587 | } | |
3e84469d | 1588 | iov[0].iov_base = pSMB; |
790fe579 | 1589 | if (wct == 14) |
ec637e3f SF |
1590 | iov[0].iov_len = smb_hdr_len + 4; |
1591 | else /* wct == 12 pad bigger by four bytes */ | |
1592 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1593 | |
1da177e4 | 1594 | |
ec637e3f | 1595 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1596 | long_op); |
a4544347 | 1597 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1598 | if (rc) { |
8cc64c6e | 1599 | cFYI(1, ("Send error Write2 = %d", rc)); |
790fe579 | 1600 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1601 | /* presumably this can not happen, but best to be safe */ |
1602 | rc = -EIO; | |
d6e04ae6 | 1603 | } else { |
ad7a2926 | 1604 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1605 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1606 | *nbytes = (*nbytes) << 16; | |
1607 | *nbytes += le16_to_cpu(pSMBr->Count); | |
50c2f753 | 1608 | } |
1da177e4 | 1609 | |
4b8f930f | 1610 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1611 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1612 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1613 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1614 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1615 | |
50c2f753 | 1616 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1617 | since file handle passed in no longer valid */ |
1618 | ||
1619 | return rc; | |
1620 | } | |
d6e04ae6 SF |
1621 | |
1622 | ||
1da177e4 LT |
1623 | int |
1624 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1625 | const __u16 smb_file_id, const __u64 len, | |
1626 | const __u64 offset, const __u32 numUnlock, | |
4b18f2a9 | 1627 | const __u32 numLock, const __u8 lockType, const bool waitFlag) |
1da177e4 LT |
1628 | { |
1629 | int rc = 0; | |
1630 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1631 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1632 | int bytes_returned; |
1633 | int timeout = 0; | |
1634 | __u16 count; | |
1635 | ||
4b18f2a9 | 1636 | cFYI(1, ("CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock)); |
46810cbf SF |
1637 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1638 | ||
1da177e4 LT |
1639 | if (rc) |
1640 | return rc; | |
1641 | ||
790fe579 | 1642 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1643 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1644 | pSMB->Timeout = 0; |
4b18f2a9 | 1645 | } else if (waitFlag) { |
133672ef | 1646 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1647 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1648 | } else { | |
1649 | pSMB->Timeout = 0; | |
1650 | } | |
1651 | ||
1652 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1653 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1654 | pSMB->LockType = lockType; | |
1655 | pSMB->AndXCommand = 0xFF; /* none */ | |
1656 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1657 | ||
790fe579 | 1658 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1659 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1660 | /* BB where to store pid high? */ | |
1661 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1662 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1663 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1664 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1665 | count = sizeof(LOCKING_ANDX_RANGE); | |
1666 | } else { | |
1667 | /* oplock break */ | |
1668 | count = 0; | |
1669 | } | |
1670 | pSMB->hdr.smb_buf_length += count; | |
1671 | pSMB->ByteCount = cpu_to_le16(count); | |
1672 | ||
7ee1af76 JA |
1673 | if (waitFlag) { |
1674 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1675 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1676 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1677 | } else { |
133672ef SF |
1678 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1679 | timeout); | |
1680 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1681 | } |
a4544347 | 1682 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1683 | if (rc) |
1da177e4 | 1684 | cFYI(1, ("Send error in Lock = %d", rc)); |
1da177e4 | 1685 | |
50c2f753 | 1686 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1687 | since file handle passed in no longer valid */ |
1688 | return rc; | |
1689 | } | |
1690 | ||
08547b03 SF |
1691 | int |
1692 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1693 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1694 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1695 | const bool waitFlag) |
08547b03 SF |
1696 | { |
1697 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1698 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1699 | struct cifs_posix_lock *parm_data; |
1700 | int rc = 0; | |
3a5ff61c | 1701 | int timeout = 0; |
08547b03 | 1702 | int bytes_returned = 0; |
133672ef | 1703 | int resp_buf_type = 0; |
08547b03 | 1704 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1705 | struct kvec iov[1]; |
08547b03 SF |
1706 | |
1707 | cFYI(1, ("Posix Lock")); | |
fc94cdb9 | 1708 | |
790fe579 | 1709 | if (pLockData == NULL) |
ed5f0370 | 1710 | return -EINVAL; |
fc94cdb9 | 1711 | |
08547b03 SF |
1712 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1713 | ||
1714 | if (rc) | |
1715 | return rc; | |
1716 | ||
1717 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1718 | ||
50c2f753 | 1719 | params = 6; |
08547b03 SF |
1720 | pSMB->MaxSetupCount = 0; |
1721 | pSMB->Reserved = 0; | |
1722 | pSMB->Flags = 0; | |
08547b03 SF |
1723 | pSMB->Reserved2 = 0; |
1724 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1725 | offset = param_offset + params; | |
1726 | ||
08547b03 SF |
1727 | count = sizeof(struct cifs_posix_lock); |
1728 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1729 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1730 | pSMB->SetupCount = 1; |
1731 | pSMB->Reserved3 = 0; | |
790fe579 | 1732 | if (get_flag) |
08547b03 SF |
1733 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1734 | else | |
1735 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1736 | byte_count = 3 /* pad */ + params + count; | |
1737 | pSMB->DataCount = cpu_to_le16(count); | |
1738 | pSMB->ParameterCount = cpu_to_le16(params); | |
1739 | pSMB->TotalDataCount = pSMB->DataCount; | |
1740 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1741 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1742 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1743 | (((char *) &pSMB->hdr.Protocol) + offset); |
1744 | ||
1745 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1746 | if (waitFlag) { |
133672ef | 1747 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1748 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1749 | pSMB->Timeout = cpu_to_le32(-1); |
1750 | } else | |
1751 | pSMB->Timeout = 0; | |
1752 | ||
08547b03 | 1753 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1754 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1755 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1756 | |
1757 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1758 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1759 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1760 | pSMB->Reserved4 = 0; | |
1761 | pSMB->hdr.smb_buf_length += byte_count; | |
1762 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1763 | if (waitFlag) { |
1764 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1765 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1766 | } else { | |
133672ef SF |
1767 | iov[0].iov_base = (char *)pSMB; |
1768 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1769 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1770 | &resp_buf_type, timeout); | |
1771 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1772 | not try to free it twice below on exit */ | |
1773 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1774 | } |
1775 | ||
08547b03 SF |
1776 | if (rc) { |
1777 | cFYI(1, ("Send error in Posix Lock = %d", rc)); | |
fc94cdb9 SF |
1778 | } else if (get_flag) { |
1779 | /* lock structure can be returned on get */ | |
1780 | __u16 data_offset; | |
1781 | __u16 data_count; | |
1782 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1783 | ||
1784 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1785 | rc = -EIO; /* bad smb */ | |
1786 | goto plk_err_exit; | |
1787 | } | |
fc94cdb9 SF |
1788 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1789 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1790 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1791 | rc = -EIO; |
1792 | goto plk_err_exit; | |
1793 | } | |
1794 | parm_data = (struct cifs_posix_lock *) | |
1795 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
790fe579 | 1796 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1797 | pLockData->fl_type = F_UNLCK; |
08547b03 | 1798 | } |
50c2f753 | 1799 | |
fc94cdb9 | 1800 | plk_err_exit: |
08547b03 SF |
1801 | if (pSMB) |
1802 | cifs_small_buf_release(pSMB); | |
1803 | ||
133672ef SF |
1804 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1805 | cifs_small_buf_release(iov[0].iov_base); | |
1806 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1807 | cifs_buf_release(iov[0].iov_base); | |
1808 | ||
08547b03 SF |
1809 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1810 | since file handle passed in no longer valid */ | |
1811 | ||
1812 | return rc; | |
1813 | } | |
1814 | ||
1815 | ||
1da177e4 LT |
1816 | int |
1817 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1818 | { | |
1819 | int rc = 0; | |
1820 | CLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
1821 | cFYI(1, ("In CIFSSMBClose")); |
1822 | ||
1823 | /* do not retry on dead session on close */ | |
1824 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1825 | if (rc == -EAGAIN) |
1da177e4 LT |
1826 | return 0; |
1827 | if (rc) | |
1828 | return rc; | |
1829 | ||
1da177e4 | 1830 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1831 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1832 | pSMB->ByteCount = 0; |
133672ef | 1833 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1834 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1835 | if (rc) { |
790fe579 | 1836 | if (rc != -EINTR) { |
1da177e4 LT |
1837 | /* EINTR is expected when user ctl-c to kill app */ |
1838 | cERROR(1, ("Send error in Close = %d", rc)); | |
1839 | } | |
1840 | } | |
1841 | ||
1da177e4 | 1842 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1843 | if (rc == -EAGAIN) |
1da177e4 LT |
1844 | rc = 0; |
1845 | ||
1846 | return rc; | |
1847 | } | |
1848 | ||
b298f223 SF |
1849 | int |
1850 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1851 | { | |
1852 | int rc = 0; | |
1853 | FLUSH_REQ *pSMB = NULL; | |
1854 | cFYI(1, ("In CIFSSMBFlush")); | |
1855 | ||
1856 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
1857 | if (rc) | |
1858 | return rc; | |
1859 | ||
1860 | pSMB->FileID = (__u16) smb_file_id; | |
1861 | pSMB->ByteCount = 0; | |
1862 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1863 | cifs_stats_inc(&tcon->num_flushes); | |
1864 | if (rc) | |
1865 | cERROR(1, ("Send error in Flush = %d", rc)); | |
1866 | ||
1867 | return rc; | |
1868 | } | |
1869 | ||
1da177e4 LT |
1870 | int |
1871 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1872 | const char *fromName, const char *toName, | |
737b758c | 1873 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1874 | { |
1875 | int rc = 0; | |
1876 | RENAME_REQ *pSMB = NULL; | |
1877 | RENAME_RSP *pSMBr = NULL; | |
1878 | int bytes_returned; | |
1879 | int name_len, name_len2; | |
1880 | __u16 count; | |
1881 | ||
1882 | cFYI(1, ("In CIFSSMBRename")); | |
1883 | renameRetry: | |
1884 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1885 | (void **) &pSMBr); | |
1886 | if (rc) | |
1887 | return rc; | |
1888 | ||
1889 | pSMB->BufferFormat = 0x04; | |
1890 | pSMB->SearchAttributes = | |
1891 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1892 | ATTR_DIRECTORY); | |
1893 | ||
1894 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1895 | name_len = | |
50c2f753 | 1896 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1897 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1898 | name_len++; /* trailing null */ |
1899 | name_len *= 2; | |
1900 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1901 | /* protocol requires ASCII signature byte on Unicode string */ | |
1902 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1903 | name_len2 = | |
582d21e5 | 1904 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1905 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1906 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1907 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 1908 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
1909 | name_len = strnlen(fromName, PATH_MAX); |
1910 | name_len++; /* trailing null */ | |
1911 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1912 | name_len2 = strnlen(toName, PATH_MAX); | |
1913 | name_len2++; /* trailing null */ | |
1914 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1915 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1916 | name_len2++; /* trailing null */ | |
1917 | name_len2++; /* signature byte */ | |
1918 | } | |
1919 | ||
1920 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1921 | pSMB->hdr.smb_buf_length += count; | |
1922 | pSMB->ByteCount = cpu_to_le16(count); | |
1923 | ||
1924 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1925 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1926 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 1927 | if (rc) |
1da177e4 | 1928 | cFYI(1, ("Send error in rename = %d", rc)); |
1da177e4 | 1929 | |
1da177e4 LT |
1930 | cifs_buf_release(pSMB); |
1931 | ||
1932 | if (rc == -EAGAIN) | |
1933 | goto renameRetry; | |
1934 | ||
1935 | return rc; | |
1936 | } | |
1937 | ||
50c2f753 | 1938 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 1939 | int netfid, const char *target_name, |
50c2f753 | 1940 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1941 | { |
1942 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1943 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 1944 | struct set_file_rename *rename_info; |
1da177e4 LT |
1945 | char *data_offset; |
1946 | char dummy_string[30]; | |
1947 | int rc = 0; | |
1948 | int bytes_returned = 0; | |
1949 | int len_of_str; | |
1950 | __u16 params, param_offset, offset, count, byte_count; | |
1951 | ||
1952 | cFYI(1, ("Rename to File by handle")); | |
1953 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
1954 | (void **) &pSMBr); | |
1955 | if (rc) | |
1956 | return rc; | |
1957 | ||
1958 | params = 6; | |
1959 | pSMB->MaxSetupCount = 0; | |
1960 | pSMB->Reserved = 0; | |
1961 | pSMB->Flags = 0; | |
1962 | pSMB->Timeout = 0; | |
1963 | pSMB->Reserved2 = 0; | |
1964 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1965 | offset = param_offset + params; | |
1966 | ||
1967 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
1968 | rename_info = (struct set_file_rename *) data_offset; | |
1969 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1970 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
1971 | pSMB->SetupCount = 1; |
1972 | pSMB->Reserved3 = 0; | |
1973 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1974 | byte_count = 3 /* pad */ + params; | |
1975 | pSMB->ParameterCount = cpu_to_le16(params); | |
1976 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1977 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1978 | pSMB->DataOffset = cpu_to_le16(offset); | |
1979 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
1980 | rename_info->overwrite = cpu_to_le32(1); | |
1981 | rename_info->root_fid = 0; | |
1982 | /* unicode only call */ | |
790fe579 | 1983 | if (target_name == NULL) { |
50c2f753 SF |
1984 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
1985 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 1986 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 1987 | } else { |
b1a45695 | 1988 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
1989 | target_name, PATH_MAX, nls_codepage, |
1990 | remap); | |
1da177e4 LT |
1991 | } |
1992 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 1993 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
1994 | byte_count += count; |
1995 | pSMB->DataCount = cpu_to_le16(count); | |
1996 | pSMB->TotalDataCount = pSMB->DataCount; | |
1997 | pSMB->Fid = netfid; | |
1998 | pSMB->InformationLevel = | |
1999 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2000 | pSMB->Reserved4 = 0; | |
2001 | pSMB->hdr.smb_buf_length += byte_count; | |
2002 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2003 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2004 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2005 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2006 | if (rc) |
790fe579 | 2007 | cFYI(1, ("Send error in Rename (by file handle) = %d", rc)); |
a5a2b489 | 2008 | |
1da177e4 LT |
2009 | cifs_buf_release(pSMB); |
2010 | ||
2011 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2012 | since file handle passed in no longer valid */ | |
2013 | ||
2014 | return rc; | |
2015 | } | |
2016 | ||
2017 | int | |
50c2f753 SF |
2018 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2019 | const __u16 target_tid, const char *toName, const int flags, | |
2020 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2021 | { |
2022 | int rc = 0; | |
2023 | COPY_REQ *pSMB = NULL; | |
2024 | COPY_RSP *pSMBr = NULL; | |
2025 | int bytes_returned; | |
2026 | int name_len, name_len2; | |
2027 | __u16 count; | |
2028 | ||
2029 | cFYI(1, ("In CIFSSMBCopy")); | |
2030 | copyRetry: | |
2031 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2032 | (void **) &pSMBr); | |
2033 | if (rc) | |
2034 | return rc; | |
2035 | ||
2036 | pSMB->BufferFormat = 0x04; | |
2037 | pSMB->Tid2 = target_tid; | |
2038 | ||
2039 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2040 | ||
2041 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2042 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2043 | fromName, PATH_MAX, nls_codepage, |
2044 | remap); | |
1da177e4 LT |
2045 | name_len++; /* trailing null */ |
2046 | name_len *= 2; | |
2047 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2048 | /* protocol requires ASCII signature byte on Unicode string */ | |
2049 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2050 | name_len2 = |
2051 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2052 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2053 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2054 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2055 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2056 | name_len = strnlen(fromName, PATH_MAX); |
2057 | name_len++; /* trailing null */ | |
2058 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2059 | name_len2 = strnlen(toName, PATH_MAX); | |
2060 | name_len2++; /* trailing null */ | |
2061 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2062 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2063 | name_len2++; /* trailing null */ | |
2064 | name_len2++; /* signature byte */ | |
2065 | } | |
2066 | ||
2067 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2068 | pSMB->hdr.smb_buf_length += count; | |
2069 | pSMB->ByteCount = cpu_to_le16(count); | |
2070 | ||
2071 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2072 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2073 | if (rc) { | |
2074 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
2075 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
2076 | } | |
0d817bc0 | 2077 | cifs_buf_release(pSMB); |
1da177e4 LT |
2078 | |
2079 | if (rc == -EAGAIN) | |
2080 | goto copyRetry; | |
2081 | ||
2082 | return rc; | |
2083 | } | |
2084 | ||
2085 | int | |
2086 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2087 | const char *fromName, const char *toName, | |
2088 | const struct nls_table *nls_codepage) | |
2089 | { | |
2090 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2091 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2092 | char *data_offset; | |
2093 | int name_len; | |
2094 | int name_len_target; | |
2095 | int rc = 0; | |
2096 | int bytes_returned = 0; | |
2097 | __u16 params, param_offset, offset, byte_count; | |
2098 | ||
2099 | cFYI(1, ("In Symlink Unix style")); | |
2100 | createSymLinkRetry: | |
2101 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2102 | (void **) &pSMBr); | |
2103 | if (rc) | |
2104 | return rc; | |
2105 | ||
2106 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2107 | name_len = | |
e89dc920 | 2108 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2109 | /* find define for this maxpathcomponent */ |
2110 | , nls_codepage); | |
2111 | name_len++; /* trailing null */ | |
2112 | name_len *= 2; | |
2113 | ||
50c2f753 | 2114 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2115 | name_len = strnlen(fromName, PATH_MAX); |
2116 | name_len++; /* trailing null */ | |
2117 | strncpy(pSMB->FileName, fromName, name_len); | |
2118 | } | |
2119 | params = 6 + name_len; | |
2120 | pSMB->MaxSetupCount = 0; | |
2121 | pSMB->Reserved = 0; | |
2122 | pSMB->Flags = 0; | |
2123 | pSMB->Timeout = 0; | |
2124 | pSMB->Reserved2 = 0; | |
2125 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2126 | InformationLevel) - 4; |
1da177e4 LT |
2127 | offset = param_offset + params; |
2128 | ||
2129 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2130 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2131 | name_len_target = | |
e89dc920 | 2132 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2133 | /* find define for this maxpathcomponent */ |
2134 | , nls_codepage); | |
2135 | name_len_target++; /* trailing null */ | |
2136 | name_len_target *= 2; | |
50c2f753 | 2137 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2138 | name_len_target = strnlen(toName, PATH_MAX); |
2139 | name_len_target++; /* trailing null */ | |
2140 | strncpy(data_offset, toName, name_len_target); | |
2141 | } | |
2142 | ||
2143 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2144 | /* BB find exact max on data count below from sess */ | |
2145 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2146 | pSMB->SetupCount = 1; | |
2147 | pSMB->Reserved3 = 0; | |
2148 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2149 | byte_count = 3 /* pad */ + params + name_len_target; | |
2150 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2151 | pSMB->ParameterCount = cpu_to_le16(params); | |
2152 | pSMB->TotalDataCount = pSMB->DataCount; | |
2153 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2154 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2155 | pSMB->DataOffset = cpu_to_le16(offset); | |
2156 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2157 | pSMB->Reserved4 = 0; | |
2158 | pSMB->hdr.smb_buf_length += byte_count; | |
2159 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2160 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2161 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2162 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2163 | if (rc) |
2d785a50 | 2164 | cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc)); |
1da177e4 | 2165 | |
0d817bc0 | 2166 | cifs_buf_release(pSMB); |
1da177e4 LT |
2167 | |
2168 | if (rc == -EAGAIN) | |
2169 | goto createSymLinkRetry; | |
2170 | ||
2171 | return rc; | |
2172 | } | |
2173 | ||
2174 | int | |
2175 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2176 | const char *fromName, const char *toName, | |
737b758c | 2177 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2178 | { |
2179 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2180 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2181 | char *data_offset; | |
2182 | int name_len; | |
2183 | int name_len_target; | |
2184 | int rc = 0; | |
2185 | int bytes_returned = 0; | |
2186 | __u16 params, param_offset, offset, byte_count; | |
2187 | ||
2188 | cFYI(1, ("In Create Hard link Unix style")); | |
2189 | createHardLinkRetry: | |
2190 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2191 | (void **) &pSMBr); | |
2192 | if (rc) | |
2193 | return rc; | |
2194 | ||
2195 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2196 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2197 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2198 | name_len++; /* trailing null */ |
2199 | name_len *= 2; | |
2200 | ||
50c2f753 | 2201 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2202 | name_len = strnlen(toName, PATH_MAX); |
2203 | name_len++; /* trailing null */ | |
2204 | strncpy(pSMB->FileName, toName, name_len); | |
2205 | } | |
2206 | params = 6 + name_len; | |
2207 | pSMB->MaxSetupCount = 0; | |
2208 | pSMB->Reserved = 0; | |
2209 | pSMB->Flags = 0; | |
2210 | pSMB->Timeout = 0; | |
2211 | pSMB->Reserved2 = 0; | |
2212 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2213 | InformationLevel) - 4; |
1da177e4 LT |
2214 | offset = param_offset + params; |
2215 | ||
2216 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2217 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2218 | name_len_target = | |
b1a45695 | 2219 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2220 | nls_codepage, remap); |
1da177e4 LT |
2221 | name_len_target++; /* trailing null */ |
2222 | name_len_target *= 2; | |
50c2f753 | 2223 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2224 | name_len_target = strnlen(fromName, PATH_MAX); |
2225 | name_len_target++; /* trailing null */ | |
2226 | strncpy(data_offset, fromName, name_len_target); | |
2227 | } | |
2228 | ||
2229 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2230 | /* BB find exact max on data count below from sess*/ | |
2231 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2232 | pSMB->SetupCount = 1; | |
2233 | pSMB->Reserved3 = 0; | |
2234 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2235 | byte_count = 3 /* pad */ + params + name_len_target; | |
2236 | pSMB->ParameterCount = cpu_to_le16(params); | |
2237 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2238 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2239 | pSMB->TotalDataCount = pSMB->DataCount; | |
2240 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2241 | pSMB->DataOffset = cpu_to_le16(offset); | |
2242 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2243 | pSMB->Reserved4 = 0; | |
2244 | pSMB->hdr.smb_buf_length += byte_count; | |
2245 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2246 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2247 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2248 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2249 | if (rc) |
1da177e4 | 2250 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); |
1da177e4 LT |
2251 | |
2252 | cifs_buf_release(pSMB); | |
2253 | if (rc == -EAGAIN) | |
2254 | goto createHardLinkRetry; | |
2255 | ||
2256 | return rc; | |
2257 | } | |
2258 | ||
2259 | int | |
2260 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2261 | const char *fromName, const char *toName, | |
737b758c | 2262 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2263 | { |
2264 | int rc = 0; | |
2265 | NT_RENAME_REQ *pSMB = NULL; | |
2266 | RENAME_RSP *pSMBr = NULL; | |
2267 | int bytes_returned; | |
2268 | int name_len, name_len2; | |
2269 | __u16 count; | |
2270 | ||
2271 | cFYI(1, ("In CIFSCreateHardLink")); | |
2272 | winCreateHardLinkRetry: | |
2273 | ||
2274 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2275 | (void **) &pSMBr); | |
2276 | if (rc) | |
2277 | return rc; | |
2278 | ||
2279 | pSMB->SearchAttributes = | |
2280 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2281 | ATTR_DIRECTORY); | |
2282 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2283 | pSMB->ClusterCount = 0; | |
2284 | ||
2285 | pSMB->BufferFormat = 0x04; | |
2286 | ||
2287 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2288 | name_len = | |
b1a45695 | 2289 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2290 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2291 | name_len++; /* trailing null */ |
2292 | name_len *= 2; | |
fcc7c09d JL |
2293 | |
2294 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2295 | pSMB->OldFileName[name_len] = 0x04; | |
2296 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2297 | name_len2 = |
50c2f753 | 2298 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2299 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2300 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2301 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2302 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2303 | name_len = strnlen(fromName, PATH_MAX); |
2304 | name_len++; /* trailing null */ | |
2305 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2306 | name_len2 = strnlen(toName, PATH_MAX); | |
2307 | name_len2++; /* trailing null */ | |
2308 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2309 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2310 | name_len2++; /* trailing null */ | |
2311 | name_len2++; /* signature byte */ | |
2312 | } | |
2313 | ||
2314 | count = 1 /* string type byte */ + name_len + name_len2; | |
2315 | pSMB->hdr.smb_buf_length += count; | |
2316 | pSMB->ByteCount = cpu_to_le16(count); | |
2317 | ||
2318 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2319 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2320 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2321 | if (rc) |
1da177e4 | 2322 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); |
ad7a2926 | 2323 | |
1da177e4 LT |
2324 | cifs_buf_release(pSMB); |
2325 | if (rc == -EAGAIN) | |
2326 | goto winCreateHardLinkRetry; | |
2327 | ||
2328 | return rc; | |
2329 | } | |
2330 | ||
2331 | int | |
2332 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2333 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2334 | const struct nls_table *nls_codepage) |
2335 | { | |
2336 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2337 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2338 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2339 | int rc = 0; | |
2340 | int bytes_returned; | |
2341 | int name_len; | |
2342 | __u16 params, byte_count; | |
460b9696 | 2343 | char *data_start; |
1da177e4 LT |
2344 | |
2345 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
2346 | ||
2347 | querySymLinkRetry: | |
2348 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2349 | (void **) &pSMBr); | |
2350 | if (rc) | |
2351 | return rc; | |
2352 | ||
2353 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2354 | name_len = | |
50c2f753 SF |
2355 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2356 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2357 | name_len++; /* trailing null */ |
2358 | name_len *= 2; | |
50c2f753 | 2359 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2360 | name_len = strnlen(searchName, PATH_MAX); |
2361 | name_len++; /* trailing null */ | |
2362 | strncpy(pSMB->FileName, searchName, name_len); | |
2363 | } | |
2364 | ||
2365 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2366 | pSMB->TotalDataCount = 0; | |
2367 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2368 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2369 | pSMB->MaxSetupCount = 0; |
2370 | pSMB->Reserved = 0; | |
2371 | pSMB->Flags = 0; | |
2372 | pSMB->Timeout = 0; | |
2373 | pSMB->Reserved2 = 0; | |
2374 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2375 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2376 | pSMB->DataCount = 0; |
2377 | pSMB->DataOffset = 0; | |
2378 | pSMB->SetupCount = 1; | |
2379 | pSMB->Reserved3 = 0; | |
2380 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2381 | byte_count = params + 1 /* pad */ ; | |
2382 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2383 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2384 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2385 | pSMB->Reserved4 = 0; | |
2386 | pSMB->hdr.smb_buf_length += byte_count; | |
2387 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2388 | ||
2389 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2390 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2391 | if (rc) { | |
2392 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
2393 | } else { | |
2394 | /* decode response */ | |
2395 | ||
2396 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2397 | /* BB also check enough total bytes returned */ |
460b9696 JL |
2398 | if (rc || (pSMBr->ByteCount < 2)) |
2399 | rc = -EIO; | |
1da177e4 | 2400 | else { |
0e0d2cf3 | 2401 | bool is_unicode; |
460b9696 JL |
2402 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2403 | ||
2404 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2405 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2406 | |
0e0d2cf3 SF |
2407 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2408 | is_unicode = true; | |
2409 | else | |
2410 | is_unicode = false; | |
2411 | ||
737b758c | 2412 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2413 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2414 | is_unicode, nls_codepage); |
8b6427a2 | 2415 | if (!*symlinkinfo) |
460b9696 | 2416 | rc = -ENOMEM; |
1da177e4 LT |
2417 | } |
2418 | } | |
2419 | cifs_buf_release(pSMB); | |
2420 | if (rc == -EAGAIN) | |
2421 | goto querySymLinkRetry; | |
2422 | return rc; | |
2423 | } | |
2424 | ||
c9489779 | 2425 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
2426 | /* Initialize NT TRANSACT SMB into small smb request buffer. |
2427 | This assumes that all NT TRANSACTS that we init here have | |
2428 | total parm and data under about 400 bytes (to fit in small cifs | |
2429 | buffer size), which is the case so far, it easily fits. NB: | |
2430 | Setup words themselves and ByteCount | |
2431 | MaxSetupCount (size of returned setup area) and | |
2432 | MaxParameterCount (returned parms size) must be set by caller */ | |
50c2f753 | 2433 | static int |
b9c7a2bb | 2434 | smb_init_nttransact(const __u16 sub_command, const int setup_count, |
0a4b92c0 | 2435 | const int parm_len, struct cifsTconInfo *tcon, |
50c2f753 | 2436 | void **ret_buf) |
0a4b92c0 SF |
2437 | { |
2438 | int rc; | |
2439 | __u32 temp_offset; | |
50c2f753 | 2440 | struct smb_com_ntransact_req *pSMB; |
0a4b92c0 SF |
2441 | |
2442 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2443 | (void **)&pSMB); | |
2444 | if (rc) | |
2445 | return rc; | |
2446 | *ret_buf = (void *)pSMB; | |
2447 | pSMB->Reserved = 0; | |
2448 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2449 | pSMB->TotalDataCount = 0; | |
2450 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2451 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2452 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2453 | pSMB->DataCount = pSMB->TotalDataCount; | |
2454 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2455 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2456 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2457 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2458 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2459 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2460 | return 0; | |
2461 | } | |
2462 | ||
2463 | static int | |
50c2f753 | 2464 | validate_ntransact(char *buf, char **ppparm, char **ppdata, |
b9c7a2bb | 2465 | __u32 *pparmlen, __u32 *pdatalen) |
0a4b92c0 | 2466 | { |
50c2f753 | 2467 | char *end_of_smb; |
0a4b92c0 | 2468 | __u32 data_count, data_offset, parm_count, parm_offset; |
50c2f753 | 2469 | struct smb_com_ntransact_rsp *pSMBr; |
0a4b92c0 | 2470 | |
630f3f0c SF |
2471 | *pdatalen = 0; |
2472 | *pparmlen = 0; | |
2473 | ||
790fe579 | 2474 | if (buf == NULL) |
0a4b92c0 SF |
2475 | return -EINVAL; |
2476 | ||
2477 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2478 | ||
2479 | /* ByteCount was converted from little endian in SendReceive */ | |
50c2f753 | 2480 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + |
0a4b92c0 SF |
2481 | (char *)&pSMBr->ByteCount; |
2482 | ||
0a4b92c0 SF |
2483 | data_offset = le32_to_cpu(pSMBr->DataOffset); |
2484 | data_count = le32_to_cpu(pSMBr->DataCount); | |
50c2f753 | 2485 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
0a4b92c0 SF |
2486 | parm_count = le32_to_cpu(pSMBr->ParameterCount); |
2487 | ||
2488 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2489 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2490 | ||
2491 | /* should we also check that parm and data areas do not overlap? */ | |
790fe579 SF |
2492 | if (*ppparm > end_of_smb) { |
2493 | cFYI(1, ("parms start after end of smb")); | |
0a4b92c0 | 2494 | return -EINVAL; |
790fe579 SF |
2495 | } else if (parm_count + *ppparm > end_of_smb) { |
2496 | cFYI(1, ("parm end after end of smb")); | |
0a4b92c0 | 2497 | return -EINVAL; |
790fe579 SF |
2498 | } else if (*ppdata > end_of_smb) { |
2499 | cFYI(1, ("data starts after end of smb")); | |
0a4b92c0 | 2500 | return -EINVAL; |
790fe579 | 2501 | } else if (data_count + *ppdata > end_of_smb) { |
26f57364 | 2502 | cFYI(1, ("data %p + count %d (%p) ends after end of smb %p start %p", |
50c2f753 SF |
2503 | *ppdata, data_count, (data_count + *ppdata), |
2504 | end_of_smb, pSMBr)); | |
0a4b92c0 | 2505 | return -EINVAL; |
790fe579 SF |
2506 | } else if (parm_count + data_count > pSMBr->ByteCount) { |
2507 | cFYI(1, ("parm count and data count larger than SMB")); | |
0a4b92c0 SF |
2508 | return -EINVAL; |
2509 | } | |
630f3f0c SF |
2510 | *pdatalen = data_count; |
2511 | *pparmlen = parm_count; | |
0a4b92c0 SF |
2512 | return 0; |
2513 | } | |
2514 | ||
1da177e4 LT |
2515 | int |
2516 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2517 | const unsigned char *searchName, | |
50c2f753 | 2518 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2519 | const struct nls_table *nls_codepage) |
2520 | { | |
2521 | int rc = 0; | |
2522 | int bytes_returned; | |
50c2f753 SF |
2523 | struct smb_com_transaction_ioctl_req *pSMB; |
2524 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 LT |
2525 | |
2526 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
2527 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2528 | (void **) &pSMBr); | |
2529 | if (rc) | |
2530 | return rc; | |
2531 | ||
2532 | pSMB->TotalParameterCount = 0 ; | |
2533 | pSMB->TotalDataCount = 0; | |
2534 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2535 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2536 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2537 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2538 | pSMB->MaxSetupCount = 4; |
2539 | pSMB->Reserved = 0; | |
2540 | pSMB->ParameterOffset = 0; | |
2541 | pSMB->DataCount = 0; | |
2542 | pSMB->DataOffset = 0; | |
2543 | pSMB->SetupCount = 4; | |
2544 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2545 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2546 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2547 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2548 | pSMB->IsRootFlag = 0; | |
2549 | pSMB->Fid = fid; /* file handle always le */ | |
2550 | pSMB->ByteCount = 0; | |
2551 | ||
2552 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2553 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2554 | if (rc) { | |
2555 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
2556 | } else { /* decode response */ | |
2557 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2558 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
afe48c31 | 2559 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) { |
1da177e4 LT |
2560 | /* BB also check enough total bytes returned */ |
2561 | rc = -EIO; /* bad smb */ | |
afe48c31 SF |
2562 | goto qreparse_out; |
2563 | } | |
2564 | if (data_count && (data_count < 2048)) { | |
2565 | char *end_of_smb = 2 /* sizeof byte count */ + | |
2566 | pSMBr->ByteCount + (char *)&pSMBr->ByteCount; | |
1da177e4 | 2567 | |
afe48c31 | 2568 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2569 | (struct reparse_data *) |
2570 | ((char *)&pSMBr->hdr.Protocol | |
2571 | + data_offset); | |
afe48c31 SF |
2572 | if ((char *)reparse_buf >= end_of_smb) { |
2573 | rc = -EIO; | |
2574 | goto qreparse_out; | |
2575 | } | |
2576 | if ((reparse_buf->LinkNamesBuf + | |
2577 | reparse_buf->TargetNameOffset + | |
2578 | reparse_buf->TargetNameLen) > end_of_smb) { | |
2579 | cFYI(1, ("reparse buf beyond SMB")); | |
2580 | rc = -EIO; | |
2581 | goto qreparse_out; | |
2582 | } | |
50c2f753 | 2583 | |
afe48c31 SF |
2584 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2585 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2586 | (reparse_buf->LinkNamesBuf + |
2587 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2588 | buflen, |
2589 | reparse_buf->TargetNameLen, | |
2590 | nls_codepage, 0); | |
2591 | } else { /* ASCII names */ | |
2592 | strncpy(symlinkinfo, | |
2593 | reparse_buf->LinkNamesBuf + | |
2594 | reparse_buf->TargetNameOffset, | |
2595 | min_t(const int, buflen, | |
2596 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2597 | } |
afe48c31 SF |
2598 | } else { |
2599 | rc = -EIO; | |
2600 | cFYI(1, ("Invalid return data count on " | |
2601 | "get reparse info ioctl")); | |
1da177e4 | 2602 | } |
afe48c31 SF |
2603 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2604 | does not go off the end of the buffer */ | |
2605 | cFYI(1, ("readlink result - %s", symlinkinfo)); | |
1da177e4 | 2606 | } |
989c7e51 | 2607 | |
1da177e4 | 2608 | qreparse_out: |
4a6d87f1 | 2609 | cifs_buf_release(pSMB); |
1da177e4 LT |
2610 | |
2611 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2612 | since file handle passed in no longer valid */ | |
2613 | ||
2614 | return rc; | |
2615 | } | |
afe48c31 | 2616 | #endif /* CIFS_EXPERIMENTAL */ |
1da177e4 LT |
2617 | |
2618 | #ifdef CONFIG_CIFS_POSIX | |
2619 | ||
2620 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2621 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2622 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2623 | { |
2624 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2625 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2626 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2627 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
1da177e4 LT |
2628 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ |
2629 | ||
2630 | return; | |
2631 | } | |
2632 | ||
2633 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2634 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2635 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2636 | { |
2637 | int size = 0; | |
2638 | int i; | |
2639 | __u16 count; | |
50c2f753 SF |
2640 | struct cifs_posix_ace *pACE; |
2641 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2642 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2643 | |
2644 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2645 | return -EOPNOTSUPP; | |
2646 | ||
790fe579 | 2647 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2648 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2649 | pACE = &cifs_acl->ace_array[0]; | |
2650 | size = sizeof(struct cifs_posix_acl); | |
2651 | size += sizeof(struct cifs_posix_ace) * count; | |
2652 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2653 | if (size_of_data_area < size) { |
50c2f753 SF |
2654 | cFYI(1, ("bad CIFS POSIX ACL size %d vs. %d", |
2655 | size_of_data_area, size)); | |
1da177e4 LT |
2656 | return -EINVAL; |
2657 | } | |
790fe579 | 2658 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2659 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2660 | size = sizeof(struct cifs_posix_acl); | |
2661 | size += sizeof(struct cifs_posix_ace) * count; | |
2662 | /* skip past access ACEs to get to default ACEs */ | |
2663 | pACE = &cifs_acl->ace_array[count]; | |
2664 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2665 | size += sizeof(struct cifs_posix_ace) * count; | |
2666 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2667 | if (size_of_data_area < size) |
1da177e4 LT |
2668 | return -EINVAL; |
2669 | } else { | |
2670 | /* illegal type */ | |
2671 | return -EINVAL; | |
2672 | } | |
2673 | ||
2674 | size = posix_acl_xattr_size(count); | |
790fe579 | 2675 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2676 | /* used to query ACL EA size */ |
790fe579 | 2677 | } else if (size > buflen) { |
1da177e4 LT |
2678 | return -ERANGE; |
2679 | } else /* buffer big enough */ { | |
ff7feac9 | 2680 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2681 | for (i = 0; i < count ; i++) { |
2682 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2683 | pACE++; | |
1da177e4 LT |
2684 | } |
2685 | } | |
2686 | return size; | |
2687 | } | |
2688 | ||
50c2f753 SF |
2689 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2690 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2691 | { |
2692 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2693 | ||
ff7feac9 SF |
2694 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2695 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2696 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2697 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2698 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2699 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2700 | } else |
ff7feac9 | 2701 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
50c2f753 | 2702 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ |
1da177e4 LT |
2703 | return rc; |
2704 | } | |
2705 | ||
2706 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2707 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2708 | const int buflen, const int acl_type) | |
1da177e4 LT |
2709 | { |
2710 | __u16 rc = 0; | |
50c2f753 SF |
2711 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2712 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2713 | int count; |
2714 | int i; | |
2715 | ||
790fe579 | 2716 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2717 | return 0; |
2718 | ||
2719 | count = posix_acl_xattr_count((size_t)buflen); | |
c18c842b | 2720 | cFYI(1, ("setting acl with %d entries from buf of length %d and " |
63135e08 | 2721 | "version of %d", |
ff7feac9 | 2722 | count, buflen, le32_to_cpu(local_acl->a_version))); |
790fe579 | 2723 | if (le32_to_cpu(local_acl->a_version) != 2) { |
50c2f753 | 2724 | cFYI(1, ("unknown POSIX ACL version %d", |
ff7feac9 | 2725 | le32_to_cpu(local_acl->a_version))); |
1da177e4 LT |
2726 | return 0; |
2727 | } | |
2728 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2729 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2730 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2731 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2732 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2733 | else { |
50c2f753 | 2734 | cFYI(1, ("unknown ACL type %d", acl_type)); |
1da177e4 LT |
2735 | return 0; |
2736 | } | |
50c2f753 | 2737 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2738 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2739 | &local_acl->a_entries[i]); | |
790fe579 | 2740 | if (rc != 0) { |
1da177e4 LT |
2741 | /* ACE not converted */ |
2742 | break; | |
2743 | } | |
2744 | } | |
790fe579 | 2745 | if (rc == 0) { |
1da177e4 LT |
2746 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2747 | rc += sizeof(struct cifs_posix_acl); | |
2748 | /* BB add check to make sure ACL does not overflow SMB */ | |
2749 | } | |
2750 | return rc; | |
2751 | } | |
2752 | ||
2753 | int | |
2754 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2755 | const unsigned char *searchName, |
2756 | char *acl_inf, const int buflen, const int acl_type, | |
2757 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2758 | { |
2759 | /* SMB_QUERY_POSIX_ACL */ | |
2760 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2761 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2762 | int rc = 0; | |
2763 | int bytes_returned; | |
2764 | int name_len; | |
2765 | __u16 params, byte_count; | |
50c2f753 | 2766 | |
1da177e4 LT |
2767 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); |
2768 | ||
2769 | queryAclRetry: | |
2770 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2771 | (void **) &pSMBr); | |
2772 | if (rc) | |
2773 | return rc; | |
50c2f753 | 2774 | |
1da177e4 LT |
2775 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2776 | name_len = | |
50c2f753 | 2777 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2778 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2779 | name_len++; /* trailing null */ |
2780 | name_len *= 2; | |
2781 | pSMB->FileName[name_len] = 0; | |
2782 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2783 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2784 | name_len = strnlen(searchName, PATH_MAX); |
2785 | name_len++; /* trailing null */ | |
2786 | strncpy(pSMB->FileName, searchName, name_len); | |
2787 | } | |
2788 | ||
2789 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2790 | pSMB->TotalDataCount = 0; | |
2791 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2792 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2793 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2794 | pSMB->MaxSetupCount = 0; | |
2795 | pSMB->Reserved = 0; | |
2796 | pSMB->Flags = 0; | |
2797 | pSMB->Timeout = 0; | |
2798 | pSMB->Reserved2 = 0; | |
2799 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2800 | offsetof(struct smb_com_transaction2_qpi_req, |
2801 | InformationLevel) - 4); | |
1da177e4 LT |
2802 | pSMB->DataCount = 0; |
2803 | pSMB->DataOffset = 0; | |
2804 | pSMB->SetupCount = 1; | |
2805 | pSMB->Reserved3 = 0; | |
2806 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2807 | byte_count = params + 1 /* pad */ ; | |
2808 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2809 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2810 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2811 | pSMB->Reserved4 = 0; | |
2812 | pSMB->hdr.smb_buf_length += byte_count; | |
2813 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2814 | ||
2815 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2816 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2817 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 LT |
2818 | if (rc) { |
2819 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
2820 | } else { | |
2821 | /* decode response */ | |
50c2f753 | 2822 | |
1da177e4 LT |
2823 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2824 | if (rc || (pSMBr->ByteCount < 2)) | |
2825 | /* BB also check enough total bytes returned */ | |
2826 | rc = -EIO; /* bad smb */ | |
2827 | else { | |
2828 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2829 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2830 | rc = cifs_copy_posix_acl(acl_inf, | |
2831 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2832 | buflen, acl_type, count); |
1da177e4 LT |
2833 | } |
2834 | } | |
2835 | cifs_buf_release(pSMB); | |
2836 | if (rc == -EAGAIN) | |
2837 | goto queryAclRetry; | |
2838 | return rc; | |
2839 | } | |
2840 | ||
2841 | int | |
2842 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2843 | const unsigned char *fileName, |
2844 | const char *local_acl, const int buflen, | |
2845 | const int acl_type, | |
2846 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2847 | { |
2848 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2849 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2850 | char *parm_data; | |
2851 | int name_len; | |
2852 | int rc = 0; | |
2853 | int bytes_returned = 0; | |
2854 | __u16 params, byte_count, data_count, param_offset, offset; | |
2855 | ||
2856 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2857 | setAclRetry: | |
2858 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2859 | (void **) &pSMBr); |
1da177e4 LT |
2860 | if (rc) |
2861 | return rc; | |
2862 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2863 | name_len = | |
50c2f753 | 2864 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2865 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2866 | name_len++; /* trailing null */ |
2867 | name_len *= 2; | |
50c2f753 | 2868 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2869 | name_len = strnlen(fileName, PATH_MAX); |
2870 | name_len++; /* trailing null */ | |
2871 | strncpy(pSMB->FileName, fileName, name_len); | |
2872 | } | |
2873 | params = 6 + name_len; | |
2874 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2875 | /* BB find max SMB size from sess */ |
2876 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2877 | pSMB->MaxSetupCount = 0; |
2878 | pSMB->Reserved = 0; | |
2879 | pSMB->Flags = 0; | |
2880 | pSMB->Timeout = 0; | |
2881 | pSMB->Reserved2 = 0; | |
2882 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2883 | InformationLevel) - 4; |
1da177e4 LT |
2884 | offset = param_offset + params; |
2885 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2886 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2887 | ||
2888 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2889 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2890 | |
790fe579 | 2891 | if (data_count == 0) { |
1da177e4 LT |
2892 | rc = -EOPNOTSUPP; |
2893 | goto setACLerrorExit; | |
2894 | } | |
2895 | pSMB->DataOffset = cpu_to_le16(offset); | |
2896 | pSMB->SetupCount = 1; | |
2897 | pSMB->Reserved3 = 0; | |
2898 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2899 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2900 | byte_count = 3 /* pad */ + params + data_count; | |
2901 | pSMB->DataCount = cpu_to_le16(data_count); | |
2902 | pSMB->TotalDataCount = pSMB->DataCount; | |
2903 | pSMB->ParameterCount = cpu_to_le16(params); | |
2904 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2905 | pSMB->Reserved4 = 0; | |
2906 | pSMB->hdr.smb_buf_length += byte_count; | |
2907 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2908 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2909 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2910 | if (rc) |
1da177e4 | 2911 | cFYI(1, ("Set POSIX ACL returned %d", rc)); |
1da177e4 LT |
2912 | |
2913 | setACLerrorExit: | |
2914 | cifs_buf_release(pSMB); | |
2915 | if (rc == -EAGAIN) | |
2916 | goto setAclRetry; | |
2917 | return rc; | |
2918 | } | |
2919 | ||
f654bac2 SF |
2920 | /* BB fix tabs in this function FIXME BB */ |
2921 | int | |
2922 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 2923 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 2924 | { |
50c2f753 SF |
2925 | int rc = 0; |
2926 | struct smb_t2_qfi_req *pSMB = NULL; | |
2927 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2928 | int bytes_returned; | |
2929 | __u16 params, byte_count; | |
f654bac2 | 2930 | |
790fe579 SF |
2931 | cFYI(1, ("In GetExtAttr")); |
2932 | if (tcon == NULL) | |
2933 | return -ENODEV; | |
f654bac2 SF |
2934 | |
2935 | GetExtAttrRetry: | |
790fe579 SF |
2936 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
2937 | (void **) &pSMBr); | |
2938 | if (rc) | |
2939 | return rc; | |
f654bac2 | 2940 | |
ad7a2926 | 2941 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
2942 | pSMB->t2.TotalDataCount = 0; |
2943 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2944 | /* BB find exact max data count below from sess structure BB */ | |
2945 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2946 | pSMB->t2.MaxSetupCount = 0; | |
2947 | pSMB->t2.Reserved = 0; | |
2948 | pSMB->t2.Flags = 0; | |
2949 | pSMB->t2.Timeout = 0; | |
2950 | pSMB->t2.Reserved2 = 0; | |
2951 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
2952 | Fid) - 4); | |
2953 | pSMB->t2.DataCount = 0; | |
2954 | pSMB->t2.DataOffset = 0; | |
2955 | pSMB->t2.SetupCount = 1; | |
2956 | pSMB->t2.Reserved3 = 0; | |
2957 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
2958 | byte_count = params + 1 /* pad */ ; | |
2959 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
2960 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
2961 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
2962 | pSMB->Pad = 0; | |
f654bac2 | 2963 | pSMB->Fid = netfid; |
790fe579 SF |
2964 | pSMB->hdr.smb_buf_length += byte_count; |
2965 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
2966 | ||
2967 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2968 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2969 | if (rc) { | |
2970 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
2971 | } else { | |
2972 | /* decode response */ | |
2973 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2974 | if (rc || (pSMBr->ByteCount < 2)) | |
2975 | /* BB also check enough total bytes returned */ | |
2976 | /* If rc should we check for EOPNOSUPP and | |
2977 | disable the srvino flag? or in caller? */ | |
2978 | rc = -EIO; /* bad smb */ | |
2979 | else { | |
2980 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2981 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2982 | struct file_chattr_info *pfinfo; | |
2983 | /* BB Do we need a cast or hash here ? */ | |
2984 | if (count != 16) { | |
2985 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
2986 | rc = -EIO; | |
2987 | goto GetExtAttrOut; | |
2988 | } | |
2989 | pfinfo = (struct file_chattr_info *) | |
2990 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
2991 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 2992 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
2993 | } |
2994 | } | |
f654bac2 | 2995 | GetExtAttrOut: |
790fe579 SF |
2996 | cifs_buf_release(pSMB); |
2997 | if (rc == -EAGAIN) | |
2998 | goto GetExtAttrRetry; | |
2999 | return rc; | |
f654bac2 SF |
3000 | } |
3001 | ||
f654bac2 | 3002 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3003 | |
297647c2 | 3004 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
3005 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3006 | int | |
3007 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3008 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3009 | { |
3010 | int rc = 0; | |
3011 | int buf_type = 0; | |
ad7a2926 | 3012 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3013 | struct kvec iov[1]; |
3014 | ||
3015 | cFYI(1, ("GetCifsACL")); | |
3016 | ||
630f3f0c SF |
3017 | *pbuflen = 0; |
3018 | *acl_inf = NULL; | |
3019 | ||
b9c7a2bb | 3020 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3021 | 8 /* parm len */, tcon, (void **) &pSMB); |
3022 | if (rc) | |
3023 | return rc; | |
3024 | ||
3025 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3026 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3027 | pSMB->MaxSetupCount = 0; | |
3028 | pSMB->Fid = fid; /* file handle always le */ | |
3029 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3030 | CIFS_ACL_DACL); | |
3031 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3032 | pSMB->hdr.smb_buf_length += 11; | |
3033 | iov[0].iov_base = (char *)pSMB; | |
3034 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3035 | ||
a761ac57 | 3036 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
133672ef | 3037 | CIFS_STD_OP); |
0a4b92c0 SF |
3038 | cifs_stats_inc(&tcon->num_acl_get); |
3039 | if (rc) { | |
3040 | cFYI(1, ("Send error in QuerySecDesc = %d", rc)); | |
3041 | } else { /* decode response */ | |
ad7a2926 | 3042 | __le32 *parm; |
630f3f0c SF |
3043 | __u32 parm_len; |
3044 | __u32 acl_len; | |
50c2f753 | 3045 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3046 | char *pdata; |
0a4b92c0 SF |
3047 | |
3048 | /* validate_nttransact */ | |
50c2f753 | 3049 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3050 | &pdata, &parm_len, pbuflen); |
790fe579 | 3051 | if (rc) |
0a4b92c0 SF |
3052 | goto qsec_out; |
3053 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3054 | ||
630f3f0c | 3055 | cFYI(1, ("smb %p parm %p data %p", pSMBr, parm, *acl_inf)); |
0a4b92c0 SF |
3056 | |
3057 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3058 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3059 | *pbuflen = 0; |
0a4b92c0 SF |
3060 | goto qsec_out; |
3061 | } | |
3062 | ||
3063 | /* BB check that data area is minimum length and as big as acl_len */ | |
3064 | ||
af6f4612 | 3065 | acl_len = le32_to_cpu(*parm); |
630f3f0c SF |
3066 | if (acl_len != *pbuflen) { |
3067 | cERROR(1, ("acl length %d does not match %d", | |
3068 | acl_len, *pbuflen)); | |
3069 | if (*pbuflen > acl_len) | |
3070 | *pbuflen = acl_len; | |
3071 | } | |
0a4b92c0 | 3072 | |
630f3f0c SF |
3073 | /* check if buffer is big enough for the acl |
3074 | header followed by the smallest SID */ | |
3075 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3076 | (*pbuflen >= 64 * 1024)) { | |
3077 | cERROR(1, ("bad acl length %d", *pbuflen)); | |
3078 | rc = -EINVAL; | |
3079 | *pbuflen = 0; | |
3080 | } else { | |
3081 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3082 | if (*acl_inf == NULL) { | |
3083 | *pbuflen = 0; | |
3084 | rc = -ENOMEM; | |
3085 | } | |
3086 | memcpy(*acl_inf, pdata, *pbuflen); | |
3087 | } | |
0a4b92c0 SF |
3088 | } |
3089 | qsec_out: | |
790fe579 | 3090 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3091 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3092 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3093 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3094 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3095 | return rc; |
3096 | } | |
97837582 SF |
3097 | |
3098 | int | |
3099 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3100 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3101 | { | |
3102 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3103 | int rc = 0; | |
3104 | int bytes_returned = 0; | |
3105 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3106 | NTRANSACT_RSP *pSMBr = NULL; | |
3107 | ||
3108 | setCifsAclRetry: | |
3109 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3110 | (void **) &pSMBr); | |
3111 | if (rc) | |
3112 | return (rc); | |
3113 | ||
3114 | pSMB->MaxSetupCount = 0; | |
3115 | pSMB->Reserved = 0; | |
3116 | ||
3117 | param_count = 8; | |
3118 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3119 | data_count = acllen; | |
3120 | data_offset = param_offset + param_count; | |
3121 | byte_count = 3 /* pad */ + param_count; | |
3122 | ||
3123 | pSMB->DataCount = cpu_to_le32(data_count); | |
3124 | pSMB->TotalDataCount = pSMB->DataCount; | |
3125 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3126 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3127 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3128 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3129 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3130 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3131 | pSMB->SetupCount = 0; | |
3132 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3133 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3134 | ||
3135 | pSMB->Fid = fid; /* file handle always le */ | |
3136 | pSMB->Reserved2 = 0; | |
3137 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3138 | ||
3139 | if (pntsd && acllen) { | |
3140 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3141 | (char *) pntsd, | |
3142 | acllen); | |
3143 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3144 | ||
3145 | } else | |
3146 | pSMB->hdr.smb_buf_length += byte_count; | |
3147 | ||
3148 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3149 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3150 | ||
3151 | cFYI(1, ("SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc)); | |
3152 | if (rc) | |
3153 | cFYI(1, ("Set CIFS ACL returned %d", rc)); | |
3154 | cifs_buf_release(pSMB); | |
3155 | ||
3156 | if (rc == -EAGAIN) | |
3157 | goto setCifsAclRetry; | |
3158 | ||
3159 | return (rc); | |
3160 | } | |
3161 | ||
297647c2 | 3162 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
0a4b92c0 | 3163 | |
6b8edfe0 SF |
3164 | /* Legacy Query Path Information call for lookup to old servers such |
3165 | as Win9x/WinME */ | |
3166 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3167 | const unsigned char *searchName, |
3168 | FILE_ALL_INFO *pFinfo, | |
3169 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3170 | { |
ad7a2926 SF |
3171 | QUERY_INFORMATION_REQ *pSMB; |
3172 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3173 | int rc = 0; |
3174 | int bytes_returned; | |
3175 | int name_len; | |
3176 | ||
50c2f753 | 3177 | cFYI(1, ("In SMBQPath path %s", searchName)); |
6b8edfe0 SF |
3178 | QInfRetry: |
3179 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3180 | (void **) &pSMBr); |
6b8edfe0 SF |
3181 | if (rc) |
3182 | return rc; | |
3183 | ||
3184 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3185 | name_len = | |
50c2f753 SF |
3186 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3187 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3188 | name_len++; /* trailing null */ |
3189 | name_len *= 2; | |
50c2f753 | 3190 | } else { |
6b8edfe0 SF |
3191 | name_len = strnlen(searchName, PATH_MAX); |
3192 | name_len++; /* trailing null */ | |
3193 | strncpy(pSMB->FileName, searchName, name_len); | |
3194 | } | |
3195 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3196 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3197 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3198 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3199 | ||
3200 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3201 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 SF |
3202 | if (rc) { |
3203 | cFYI(1, ("Send error in QueryInfo = %d", rc)); | |
ad7a2926 | 3204 | } else if (pFinfo) { |
1bd5bbcb SF |
3205 | struct timespec ts; |
3206 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3207 | |
3208 | /* decode response */ | |
1bd5bbcb | 3209 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3210 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3211 | ts.tv_nsec = 0; |
3212 | ts.tv_sec = time; | |
3213 | /* decode time fields */ | |
733f99ac | 3214 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3215 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3216 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3217 | pFinfo->AllocationSize = |
3218 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3219 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3220 | pFinfo->Attributes = | |
3221 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3222 | } else |
3223 | rc = -EIO; /* bad buffer passed in */ | |
3224 | ||
3225 | cifs_buf_release(pSMB); | |
3226 | ||
3227 | if (rc == -EAGAIN) | |
3228 | goto QInfRetry; | |
3229 | ||
3230 | return rc; | |
3231 | } | |
3232 | ||
3233 | ||
3234 | ||
3235 | ||
1da177e4 LT |
3236 | int |
3237 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3238 | const unsigned char *searchName, | |
ad7a2926 | 3239 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3240 | int legacy /* old style infolevel */, |
737b758c | 3241 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3242 | { |
3243 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3244 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3245 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3246 | int rc = 0; | |
3247 | int bytes_returned; | |
3248 | int name_len; | |
3249 | __u16 params, byte_count; | |
3250 | ||
3251 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
3252 | QPathInfoRetry: | |
3253 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3254 | (void **) &pSMBr); | |
3255 | if (rc) | |
3256 | return rc; | |
3257 | ||
3258 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3259 | name_len = | |
50c2f753 | 3260 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3261 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3262 | name_len++; /* trailing null */ |
3263 | name_len *= 2; | |
50c2f753 | 3264 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3265 | name_len = strnlen(searchName, PATH_MAX); |
3266 | name_len++; /* trailing null */ | |
3267 | strncpy(pSMB->FileName, searchName, name_len); | |
3268 | } | |
3269 | ||
50c2f753 | 3270 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3271 | pSMB->TotalDataCount = 0; |
3272 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3273 | /* BB find exact max SMB PDU from sess structure BB */ |
3274 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3275 | pSMB->MaxSetupCount = 0; |
3276 | pSMB->Reserved = 0; | |
3277 | pSMB->Flags = 0; | |
3278 | pSMB->Timeout = 0; | |
3279 | pSMB->Reserved2 = 0; | |
3280 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3281 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3282 | pSMB->DataCount = 0; |
3283 | pSMB->DataOffset = 0; | |
3284 | pSMB->SetupCount = 1; | |
3285 | pSMB->Reserved3 = 0; | |
3286 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3287 | byte_count = params + 1 /* pad */ ; | |
3288 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3289 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3290 | if (legacy) |
acf1a1b1 SF |
3291 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3292 | else | |
3293 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3294 | pSMB->Reserved4 = 0; |
3295 | pSMB->hdr.smb_buf_length += byte_count; | |
3296 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3297 | ||
3298 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3299 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3300 | if (rc) { | |
3301 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3302 | } else { /* decode response */ | |
3303 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3304 | ||
acf1a1b1 SF |
3305 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3306 | rc = -EIO; | |
50c2f753 | 3307 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3308 | rc = -EIO; /* bad smb */ |
790fe579 | 3309 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3310 | rc = -EIO; /* 24 or 26 expected but we do not read |
3311 | last field */ | |
3312 | else if (pFindData) { | |
acf1a1b1 | 3313 | int size; |
1da177e4 | 3314 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3315 | |
3316 | /* On legacy responses we do not read the last field, | |
3317 | EAsize, fortunately since it varies by subdialect and | |
3318 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3319 | bytes depending but we don't care here */ | |
3320 | if (legacy) | |
acf1a1b1 SF |
3321 | size = sizeof(FILE_INFO_STANDARD); |
3322 | else | |
3323 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3324 | memcpy((char *) pFindData, |
3325 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3326 | data_offset, size); |
1da177e4 LT |
3327 | } else |
3328 | rc = -ENOMEM; | |
3329 | } | |
3330 | cifs_buf_release(pSMB); | |
3331 | if (rc == -EAGAIN) | |
3332 | goto QPathInfoRetry; | |
3333 | ||
3334 | return rc; | |
3335 | } | |
3336 | ||
3337 | int | |
3338 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3339 | const unsigned char *searchName, | |
582d21e5 | 3340 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3341 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3342 | { |
3343 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3344 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3345 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3346 | int rc = 0; | |
3347 | int bytes_returned = 0; | |
3348 | int name_len; | |
3349 | __u16 params, byte_count; | |
3350 | ||
3351 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
3352 | UnixQPathInfoRetry: | |
3353 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3354 | (void **) &pSMBr); | |
3355 | if (rc) | |
3356 | return rc; | |
3357 | ||
3358 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3359 | name_len = | |
b1a45695 | 3360 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3361 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3362 | name_len++; /* trailing null */ |
3363 | name_len *= 2; | |
50c2f753 | 3364 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3365 | name_len = strnlen(searchName, PATH_MAX); |
3366 | name_len++; /* trailing null */ | |
3367 | strncpy(pSMB->FileName, searchName, name_len); | |
3368 | } | |
3369 | ||
50c2f753 | 3370 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3371 | pSMB->TotalDataCount = 0; |
3372 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3373 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3374 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3375 | pSMB->MaxSetupCount = 0; |
3376 | pSMB->Reserved = 0; | |
3377 | pSMB->Flags = 0; | |
3378 | pSMB->Timeout = 0; | |
3379 | pSMB->Reserved2 = 0; | |
3380 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3381 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3382 | pSMB->DataCount = 0; |
3383 | pSMB->DataOffset = 0; | |
3384 | pSMB->SetupCount = 1; | |
3385 | pSMB->Reserved3 = 0; | |
3386 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3387 | byte_count = params + 1 /* pad */ ; | |
3388 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3389 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3390 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3391 | pSMB->Reserved4 = 0; | |
3392 | pSMB->hdr.smb_buf_length += byte_count; | |
3393 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3394 | ||
3395 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3396 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3397 | if (rc) { | |
3398 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3399 | } else { /* decode response */ | |
3400 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3401 | ||
3402 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
1e71f25d SF |
3403 | cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n" |
3404 | "Unix Extensions can be disabled on mount " | |
3405 | "by specifying the nosfu mount option.")); | |
1da177e4 LT |
3406 | rc = -EIO; /* bad smb */ |
3407 | } else { | |
3408 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3409 | memcpy((char *) pFindData, | |
3410 | (char *) &pSMBr->hdr.Protocol + | |
3411 | data_offset, | |
630f3f0c | 3412 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3413 | } |
3414 | } | |
3415 | cifs_buf_release(pSMB); | |
3416 | if (rc == -EAGAIN) | |
3417 | goto UnixQPathInfoRetry; | |
3418 | ||
3419 | return rc; | |
3420 | } | |
3421 | ||
1da177e4 LT |
3422 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3423 | int | |
3424 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3425 | const char *searchName, |
1da177e4 | 3426 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3427 | __u16 *pnetfid, |
3428 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3429 | { |
3430 | /* level 257 SMB_ */ | |
3431 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3432 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3433 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3434 | int rc = 0; |
3435 | int bytes_returned = 0; | |
3436 | int name_len; | |
3437 | __u16 params, byte_count; | |
3438 | ||
50c2f753 | 3439 | cFYI(1, ("In FindFirst for %s", searchName)); |
1da177e4 LT |
3440 | |
3441 | findFirstRetry: | |
3442 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3443 | (void **) &pSMBr); | |
3444 | if (rc) | |
3445 | return rc; | |
3446 | ||
3447 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3448 | name_len = | |
50c2f753 | 3449 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3450 | PATH_MAX, nls_codepage, remap); |
3451 | /* We can not add the asterik earlier in case | |
3452 | it got remapped to 0xF03A as if it were part of the | |
3453 | directory name instead of a wildcard */ | |
1da177e4 | 3454 | name_len *= 2; |
ac67055e | 3455 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3456 | pSMB->FileName[name_len+1] = 0; |
3457 | pSMB->FileName[name_len+2] = '*'; | |
3458 | pSMB->FileName[name_len+3] = 0; | |
3459 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3460 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3461 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3462 | name_len += 2; |
1da177e4 LT |
3463 | } else { /* BB add check for overrun of SMB buf BB */ |
3464 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3465 | /* BB fix here and in unicode clause above ie |
790fe579 | 3466 | if (name_len > buffersize-header) |
1da177e4 LT |
3467 | free buffer exit; BB */ |
3468 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3469 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3470 | pSMB->FileName[name_len+1] = '*'; |
3471 | pSMB->FileName[name_len+2] = 0; | |
3472 | name_len += 3; | |
1da177e4 LT |
3473 | } |
3474 | ||
3475 | params = 12 + name_len /* includes null */ ; | |
3476 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3477 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3478 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3479 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3480 | pSMB->MaxSetupCount = 0; | |
3481 | pSMB->Reserved = 0; | |
3482 | pSMB->Flags = 0; | |
3483 | pSMB->Timeout = 0; | |
3484 | pSMB->Reserved2 = 0; | |
3485 | byte_count = params + 1 /* pad */ ; | |
3486 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3487 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3488 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3489 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3490 | - 4); | |
1da177e4 LT |
3491 | pSMB->DataCount = 0; |
3492 | pSMB->DataOffset = 0; | |
3493 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3494 | pSMB->Reserved3 = 0; | |
3495 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3496 | pSMB->SearchAttributes = | |
3497 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3498 | ATTR_DIRECTORY); | |
50c2f753 SF |
3499 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3500 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3501 | CIFS_SEARCH_RETURN_RESUME); |
3502 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3503 | ||
3504 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3505 | pSMB->SearchStorageType = 0; | |
3506 | pSMB->hdr.smb_buf_length += byte_count; | |
3507 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3508 | ||
3509 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3510 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3511 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3512 | |
88274815 SF |
3513 | if (rc) {/* BB add logic to retry regular search if Unix search |
3514 | rejected unexpectedly by server */ | |
1da177e4 LT |
3515 | /* BB Add code to handle unsupported level rc */ |
3516 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
1982c344 | 3517 | |
88274815 | 3518 | cifs_buf_release(pSMB); |
1da177e4 LT |
3519 | |
3520 | /* BB eventually could optimize out free and realloc of buf */ | |
3521 | /* for this case */ | |
3522 | if (rc == -EAGAIN) | |
3523 | goto findFirstRetry; | |
3524 | } else { /* decode response */ | |
3525 | /* BB remember to free buffer if error BB */ | |
3526 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3527 | if (rc == 0) { |
b77d753c SF |
3528 | unsigned int lnoff; |
3529 | ||
1da177e4 | 3530 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3531 | psrch_inf->unicode = true; |
1da177e4 | 3532 | else |
4b18f2a9 | 3533 | psrch_inf->unicode = false; |
1da177e4 LT |
3534 | |
3535 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3536 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3537 | psrch_inf->srch_entries_start = |
3538 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3539 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3540 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3541 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3542 | ||
790fe579 | 3543 | if (parms->EndofSearch) |
4b18f2a9 | 3544 | psrch_inf->endOfSearch = true; |
1da177e4 | 3545 | else |
4b18f2a9 | 3546 | psrch_inf->endOfSearch = false; |
1da177e4 | 3547 | |
50c2f753 SF |
3548 | psrch_inf->entries_in_buffer = |
3549 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3550 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3551 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3552 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3553 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3554 | lnoff) { | |
3555 | cERROR(1, ("ignoring corrupt resume name")); | |
3556 | psrch_inf->last_entry = NULL; | |
3557 | return rc; | |
3558 | } | |
3559 | ||
0752f152 | 3560 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3561 | lnoff; |
3562 | ||
1da177e4 LT |
3563 | *pnetfid = parms->SearchHandle; |
3564 | } else { | |
3565 | cifs_buf_release(pSMB); | |
3566 | } | |
3567 | } | |
3568 | ||
3569 | return rc; | |
3570 | } | |
3571 | ||
3572 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3573 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3574 | { |
3575 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3576 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3577 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3578 | char *response_data; |
3579 | int rc = 0; | |
3580 | int bytes_returned, name_len; | |
3581 | __u16 params, byte_count; | |
3582 | ||
3583 | cFYI(1, ("In FindNext")); | |
3584 | ||
4b18f2a9 | 3585 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3586 | return -ENOENT; |
3587 | ||
3588 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3589 | (void **) &pSMBr); | |
3590 | if (rc) | |
3591 | return rc; | |
3592 | ||
50c2f753 | 3593 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3594 | byte_count = 0; |
3595 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3596 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3597 | pSMB->MaxDataCount = | |
50c2f753 SF |
3598 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3599 | 0xFFFFFF00); | |
1da177e4 LT |
3600 | pSMB->MaxSetupCount = 0; |
3601 | pSMB->Reserved = 0; | |
3602 | pSMB->Flags = 0; | |
3603 | pSMB->Timeout = 0; | |
3604 | pSMB->Reserved2 = 0; | |
3605 | pSMB->ParameterOffset = cpu_to_le16( | |
3606 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3607 | pSMB->DataCount = 0; | |
3608 | pSMB->DataOffset = 0; | |
3609 | pSMB->SetupCount = 1; | |
3610 | pSMB->Reserved3 = 0; | |
3611 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3612 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3613 | pSMB->SearchCount = | |
630f3f0c | 3614 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3615 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3616 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3617 | pSMB->SearchFlags = | |
3618 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3619 | ||
3620 | name_len = psrch_inf->resume_name_len; | |
3621 | params += name_len; | |
790fe579 | 3622 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3623 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3624 | byte_count += name_len; | |
ef6724e3 SF |
3625 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3626 | pSMB->ResumeFileName[name_len] = 0; | |
3627 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3628 | } else { |
3629 | rc = -EINVAL; | |
3630 | goto FNext2_err_exit; | |
3631 | } | |
3632 | byte_count = params + 1 /* pad */ ; | |
3633 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3634 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3635 | pSMB->hdr.smb_buf_length += byte_count; | |
3636 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3637 | |
1da177e4 LT |
3638 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3639 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3640 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3641 | if (rc) { |
3642 | if (rc == -EBADF) { | |
4b18f2a9 | 3643 | psrch_inf->endOfSearch = true; |
6353450a | 3644 | cifs_buf_release(pSMB); |
50c2f753 | 3645 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 LT |
3646 | } else |
3647 | cFYI(1, ("FindNext returned = %d", rc)); | |
3648 | } else { /* decode response */ | |
3649 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3650 | |
790fe579 | 3651 | if (rc == 0) { |
b77d753c SF |
3652 | unsigned int lnoff; |
3653 | ||
1da177e4 LT |
3654 | /* BB fixme add lock for file (srch_info) struct here */ |
3655 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3656 | psrch_inf->unicode = true; |
1da177e4 | 3657 | else |
4b18f2a9 | 3658 | psrch_inf->unicode = false; |
1da177e4 LT |
3659 | response_data = (char *) &pSMBr->hdr.Protocol + |
3660 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3661 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3662 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3663 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3664 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3665 | cifs_small_buf_release( |
3666 | psrch_inf->ntwrk_buf_start); | |
3667 | else | |
3668 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3669 | psrch_inf->srch_entries_start = response_data; |
3670 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3671 | psrch_inf->smallBuf = 0; |
790fe579 | 3672 | if (parms->EndofSearch) |
4b18f2a9 | 3673 | psrch_inf->endOfSearch = true; |
1da177e4 | 3674 | else |
4b18f2a9 | 3675 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3676 | psrch_inf->entries_in_buffer = |
3677 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3678 | psrch_inf->index_of_last_entry += |
3679 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3680 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3681 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3682 | lnoff) { | |
3683 | cERROR(1, ("ignoring corrupt resume name")); | |
3684 | psrch_inf->last_entry = NULL; | |
3685 | return rc; | |
3686 | } else | |
3687 | psrch_inf->last_entry = | |
3688 | psrch_inf->srch_entries_start + lnoff; | |
3689 | ||
50c2f753 SF |
3690 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d", |
3691 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry)); */ | |
1da177e4 LT |
3692 | |
3693 | /* BB fixme add unlock here */ | |
3694 | } | |
3695 | ||
3696 | } | |
3697 | ||
3698 | /* BB On error, should we leave previous search buf (and count and | |
3699 | last entry fields) intact or free the previous one? */ | |
3700 | ||
3701 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3702 | since file handle passed in no longer valid */ | |
3703 | FNext2_err_exit: | |
3704 | if (rc != 0) | |
3705 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3706 | return rc; |
3707 | } | |
3708 | ||
3709 | int | |
50c2f753 SF |
3710 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3711 | const __u16 searchHandle) | |
1da177e4 LT |
3712 | { |
3713 | int rc = 0; | |
3714 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
3715 | |
3716 | cFYI(1, ("In CIFSSMBFindClose")); | |
3717 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
3718 | ||
3719 | /* no sense returning error if session restarted | |
3720 | as file handle has been closed */ | |
790fe579 | 3721 | if (rc == -EAGAIN) |
1da177e4 LT |
3722 | return 0; |
3723 | if (rc) | |
3724 | return rc; | |
3725 | ||
1da177e4 LT |
3726 | pSMB->FileID = searchHandle; |
3727 | pSMB->ByteCount = 0; | |
133672ef | 3728 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3729 | if (rc) |
1da177e4 | 3730 | cERROR(1, ("Send error in FindClose = %d", rc)); |
ad7a2926 | 3731 | |
a4544347 | 3732 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3733 | |
3734 | /* Since session is dead, search handle closed on server already */ | |
3735 | if (rc == -EAGAIN) | |
3736 | rc = 0; | |
3737 | ||
3738 | return rc; | |
3739 | } | |
3740 | ||
1da177e4 LT |
3741 | int |
3742 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3743 | const unsigned char *searchName, |
ad7a2926 | 3744 | __u64 *inode_number, |
50c2f753 | 3745 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3746 | { |
3747 | int rc = 0; | |
3748 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3749 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3750 | int name_len, bytes_returned; | |
3751 | __u16 params, byte_count; | |
3752 | ||
50c2f753 | 3753 | cFYI(1, ("In GetSrvInodeNum for %s", searchName)); |
790fe579 | 3754 | if (tcon == NULL) |
50c2f753 | 3755 | return -ENODEV; |
1da177e4 LT |
3756 | |
3757 | GetInodeNumberRetry: | |
3758 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3759 | (void **) &pSMBr); |
1da177e4 LT |
3760 | if (rc) |
3761 | return rc; | |
3762 | ||
1da177e4 LT |
3763 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3764 | name_len = | |
b1a45695 | 3765 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 3766 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3767 | name_len++; /* trailing null */ |
3768 | name_len *= 2; | |
50c2f753 | 3769 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3770 | name_len = strnlen(searchName, PATH_MAX); |
3771 | name_len++; /* trailing null */ | |
3772 | strncpy(pSMB->FileName, searchName, name_len); | |
3773 | } | |
3774 | ||
3775 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3776 | pSMB->TotalDataCount = 0; | |
3777 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3778 | /* BB find exact max data count below from sess structure BB */ | |
3779 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3780 | pSMB->MaxSetupCount = 0; | |
3781 | pSMB->Reserved = 0; | |
3782 | pSMB->Flags = 0; | |
3783 | pSMB->Timeout = 0; | |
3784 | pSMB->Reserved2 = 0; | |
3785 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3786 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3787 | pSMB->DataCount = 0; |
3788 | pSMB->DataOffset = 0; | |
3789 | pSMB->SetupCount = 1; | |
3790 | pSMB->Reserved3 = 0; | |
3791 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3792 | byte_count = params + 1 /* pad */ ; | |
3793 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3794 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3795 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3796 | pSMB->Reserved4 = 0; | |
3797 | pSMB->hdr.smb_buf_length += byte_count; | |
3798 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3799 | ||
3800 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3801 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3802 | if (rc) { | |
3803 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
3804 | } else { | |
3805 | /* decode response */ | |
3806 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3807 | if (rc || (pSMBr->ByteCount < 2)) | |
3808 | /* BB also check enough total bytes returned */ | |
3809 | /* If rc should we check for EOPNOSUPP and | |
3810 | disable the srvino flag? or in caller? */ | |
3811 | rc = -EIO; /* bad smb */ | |
50c2f753 | 3812 | else { |
1da177e4 LT |
3813 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
3814 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 3815 | struct file_internal_info *pfinfo; |
1da177e4 | 3816 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 3817 | if (count < 8) { |
1da177e4 LT |
3818 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); |
3819 | rc = -EIO; | |
3820 | goto GetInodeNumOut; | |
3821 | } | |
3822 | pfinfo = (struct file_internal_info *) | |
3823 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 3824 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
3825 | } |
3826 | } | |
3827 | GetInodeNumOut: | |
3828 | cifs_buf_release(pSMB); | |
3829 | if (rc == -EAGAIN) | |
3830 | goto GetInodeNumberRetry; | |
3831 | return rc; | |
3832 | } | |
1da177e4 | 3833 | |
fec4585f IM |
3834 | /* parses DFS refferal V3 structure |
3835 | * caller is responsible for freeing target_nodes | |
3836 | * returns: | |
3837 | * on success - 0 | |
3838 | * on failure - errno | |
3839 | */ | |
3840 | static int | |
a1fe78f1 | 3841 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
3842 | unsigned int *num_of_nodes, |
3843 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
3844 | const struct nls_table *nls_codepage, int remap, |
3845 | const char *searchName) | |
fec4585f IM |
3846 | { |
3847 | int i, rc = 0; | |
3848 | char *data_end; | |
3849 | bool is_unicode; | |
3850 | struct dfs_referral_level_3 *ref; | |
3851 | ||
5ca33c6a HH |
3852 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3853 | is_unicode = true; | |
3854 | else | |
3855 | is_unicode = false; | |
fec4585f IM |
3856 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
3857 | ||
3858 | if (*num_of_nodes < 1) { | |
3859 | cERROR(1, ("num_referrals: must be at least > 0," | |
3860 | "but we get num_referrals = %d\n", *num_of_nodes)); | |
3861 | rc = -EINVAL; | |
a1fe78f1 | 3862 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3863 | } |
3864 | ||
3865 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 3866 | if (ref->VersionNumber != cpu_to_le16(3)) { |
fec4585f | 3867 | cERROR(1, ("Referrals of V%d version are not supported," |
1d92cfd5 | 3868 | "should be V3", le16_to_cpu(ref->VersionNumber))); |
fec4585f | 3869 | rc = -EINVAL; |
a1fe78f1 | 3870 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3871 | } |
3872 | ||
3873 | /* get the upper boundary of the resp buffer */ | |
3874 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
3875 | le16_to_cpu(pSMBr->t2.DataCount); | |
3876 | ||
3877 | cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n", | |
3878 | *num_of_nodes, | |
0e0d2cf3 | 3879 | le32_to_cpu(pSMBr->DFSFlags))); |
fec4585f IM |
3880 | |
3881 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
3882 | *num_of_nodes, GFP_KERNEL); | |
3883 | if (*target_nodes == NULL) { | |
3884 | cERROR(1, ("Failed to allocate buffer for target_nodes\n")); | |
3885 | rc = -ENOMEM; | |
a1fe78f1 | 3886 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3887 | } |
3888 | ||
3889 | /* collect neccessary data from referrals */ | |
3890 | for (i = 0; i < *num_of_nodes; i++) { | |
3891 | char *temp; | |
3892 | int max_len; | |
3893 | struct dfs_info3_param *node = (*target_nodes)+i; | |
3894 | ||
0e0d2cf3 | 3895 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 3896 | if (is_unicode) { |
331c3135 JL |
3897 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
3898 | GFP_KERNEL); | |
2920ee2b SF |
3899 | if (tmp == NULL) { |
3900 | rc = -ENOMEM; | |
3901 | goto parse_DFS_referrals_exit; | |
3902 | } | |
2c55608f IM |
3903 | cifsConvertToUCS((__le16 *) tmp, searchName, |
3904 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
3905 | node->path_consumed = cifs_ucs2_bytes(tmp, |
3906 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
3907 | nls_codepage); |
3908 | kfree(tmp); | |
3909 | } else | |
3910 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
3911 | ||
fec4585f IM |
3912 | node->server_type = le16_to_cpu(ref->ServerType); |
3913 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
3914 | ||
3915 | /* copy DfsPath */ | |
3916 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
3917 | max_len = data_end - temp; | |
d185cda7 SF |
3918 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
3919 | is_unicode, nls_codepage); | |
d8e2f53a JL |
3920 | if (!node->path_name) { |
3921 | rc = -ENOMEM; | |
a1fe78f1 | 3922 | goto parse_DFS_referrals_exit; |
066ce689 | 3923 | } |
fec4585f IM |
3924 | |
3925 | /* copy link target UNC */ | |
3926 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
3927 | max_len = data_end - temp; | |
d185cda7 SF |
3928 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
3929 | is_unicode, nls_codepage); | |
d8e2f53a JL |
3930 | if (!node->node_name) |
3931 | rc = -ENOMEM; | |
fec4585f IM |
3932 | } |
3933 | ||
a1fe78f1 | 3934 | parse_DFS_referrals_exit: |
fec4585f IM |
3935 | if (rc) { |
3936 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
3937 | *target_nodes = NULL; | |
3938 | *num_of_nodes = 0; | |
3939 | } | |
3940 | return rc; | |
3941 | } | |
3942 | ||
1da177e4 LT |
3943 | int |
3944 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
3945 | const unsigned char *searchName, | |
c2cf07d5 SF |
3946 | struct dfs_info3_param **target_nodes, |
3947 | unsigned int *num_of_nodes, | |
737b758c | 3948 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3949 | { |
3950 | /* TRANS2_GET_DFS_REFERRAL */ | |
3951 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
3952 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
3953 | int rc = 0; |
3954 | int bytes_returned; | |
3955 | int name_len; | |
1da177e4 | 3956 | __u16 params, byte_count; |
c2cf07d5 SF |
3957 | *num_of_nodes = 0; |
3958 | *target_nodes = NULL; | |
1da177e4 LT |
3959 | |
3960 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
3961 | if (ses == NULL) | |
3962 | return -ENODEV; | |
3963 | getDFSRetry: | |
3964 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
3965 | (void **) &pSMBr); | |
3966 | if (rc) | |
3967 | return rc; | |
50c2f753 SF |
3968 | |
3969 | /* server pointer checked in called function, | |
1982c344 SF |
3970 | but should never be null here anyway */ |
3971 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3972 | pSMB->hdr.Tid = ses->ipc_tid; |
3973 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 3974 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 3975 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 3976 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 3977 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
3978 | |
3979 | if (ses->capabilities & CAP_UNICODE) { | |
3980 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
3981 | name_len = | |
b1a45695 | 3982 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 3983 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3984 | name_len++; /* trailing null */ |
3985 | name_len *= 2; | |
50c2f753 | 3986 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3987 | name_len = strnlen(searchName, PATH_MAX); |
3988 | name_len++; /* trailing null */ | |
3989 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
3990 | } | |
3991 | ||
790fe579 SF |
3992 | if (ses->server) { |
3993 | if (ses->server->secMode & | |
1a4e15a0 SF |
3994 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
3995 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
3996 | } | |
3997 | ||
50c2f753 | 3998 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 3999 | |
1da177e4 LT |
4000 | params = 2 /* level */ + name_len /*includes null */ ; |
4001 | pSMB->TotalDataCount = 0; | |
4002 | pSMB->DataCount = 0; | |
4003 | pSMB->DataOffset = 0; | |
4004 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4005 | /* BB find exact max SMB PDU from sess structure BB */ |
4006 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4007 | pSMB->MaxSetupCount = 0; |
4008 | pSMB->Reserved = 0; | |
4009 | pSMB->Flags = 0; | |
4010 | pSMB->Timeout = 0; | |
4011 | pSMB->Reserved2 = 0; | |
4012 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4013 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4014 | pSMB->SetupCount = 1; |
4015 | pSMB->Reserved3 = 0; | |
4016 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4017 | byte_count = params + 3 /* pad */ ; | |
4018 | pSMB->ParameterCount = cpu_to_le16(params); | |
4019 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4020 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
4021 | pSMB->hdr.smb_buf_length += byte_count; | |
4022 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4023 | ||
4024 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4025 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4026 | if (rc) { | |
4027 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
c2cf07d5 SF |
4028 | goto GetDFSRefExit; |
4029 | } | |
4030 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4031 | |
c2cf07d5 | 4032 | /* BB Also check if enough total bytes returned? */ |
fec4585f | 4033 | if (rc || (pSMBr->ByteCount < 17)) { |
c2cf07d5 | 4034 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4035 | goto GetDFSRefExit; |
4036 | } | |
c2cf07d5 | 4037 | |
fec4585f IM |
4038 | cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d", |
4039 | pSMBr->ByteCount, | |
4040 | le16_to_cpu(pSMBr->t2.DataOffset))); | |
1da177e4 | 4041 | |
fec4585f | 4042 | /* parse returned result into more usable form */ |
a1fe78f1 | 4043 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4044 | target_nodes, nls_codepage, remap, |
4045 | searchName); | |
c2cf07d5 | 4046 | |
1da177e4 | 4047 | GetDFSRefExit: |
0d817bc0 | 4048 | cifs_buf_release(pSMB); |
1da177e4 LT |
4049 | |
4050 | if (rc == -EAGAIN) | |
4051 | goto getDFSRetry; | |
4052 | ||
4053 | return rc; | |
4054 | } | |
4055 | ||
20962438 SF |
4056 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4057 | int | |
4058 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4059 | { | |
4060 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4061 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4062 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4063 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4064 | int rc = 0; | |
4065 | int bytes_returned = 0; | |
4066 | __u16 params, byte_count; | |
4067 | ||
4068 | cFYI(1, ("OldQFSInfo")); | |
4069 | oldQFSInfoRetry: | |
4070 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4071 | (void **) &pSMBr); | |
4072 | if (rc) | |
4073 | return rc; | |
20962438 SF |
4074 | |
4075 | params = 2; /* level */ | |
4076 | pSMB->TotalDataCount = 0; | |
4077 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4078 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4079 | pSMB->MaxSetupCount = 0; | |
4080 | pSMB->Reserved = 0; | |
4081 | pSMB->Flags = 0; | |
4082 | pSMB->Timeout = 0; | |
4083 | pSMB->Reserved2 = 0; | |
4084 | byte_count = params + 1 /* pad */ ; | |
4085 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4086 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4087 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4088 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4089 | pSMB->DataCount = 0; | |
4090 | pSMB->DataOffset = 0; | |
4091 | pSMB->SetupCount = 1; | |
4092 | pSMB->Reserved3 = 0; | |
4093 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4094 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4095 | pSMB->hdr.smb_buf_length += byte_count; | |
4096 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4097 | ||
4098 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4099 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4100 | if (rc) { | |
4101 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
4102 | } else { /* decode response */ | |
4103 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4104 | ||
4105 | if (rc || (pSMBr->ByteCount < 18)) | |
4106 | rc = -EIO; /* bad smb */ | |
4107 | else { | |
4108 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 4109 | cFYI(1, ("qfsinf resp BCC: %d Offset %d", |
20962438 SF |
4110 | pSMBr->ByteCount, data_offset)); |
4111 | ||
50c2f753 | 4112 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4113 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4114 | FSData->f_bsize = | |
4115 | le16_to_cpu(response_data->BytesPerSector) * | |
4116 | le32_to_cpu(response_data-> | |
4117 | SectorsPerAllocationUnit); | |
4118 | FSData->f_blocks = | |
50c2f753 | 4119 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4120 | FSData->f_bfree = FSData->f_bavail = |
4121 | le32_to_cpu(response_data->FreeAllocationUnits); | |
4122 | cFYI(1, | |
4123 | ("Blocks: %lld Free: %lld Block size %ld", | |
4124 | (unsigned long long)FSData->f_blocks, | |
4125 | (unsigned long long)FSData->f_bfree, | |
4126 | FSData->f_bsize)); | |
4127 | } | |
4128 | } | |
4129 | cifs_buf_release(pSMB); | |
4130 | ||
4131 | if (rc == -EAGAIN) | |
4132 | goto oldQFSInfoRetry; | |
4133 | ||
4134 | return rc; | |
4135 | } | |
4136 | ||
1da177e4 | 4137 | int |
737b758c | 4138 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4139 | { |
4140 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4141 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4142 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4143 | FILE_SYSTEM_INFO *response_data; | |
4144 | int rc = 0; | |
4145 | int bytes_returned = 0; | |
4146 | __u16 params, byte_count; | |
4147 | ||
4148 | cFYI(1, ("In QFSInfo")); | |
4149 | QFSInfoRetry: | |
4150 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4151 | (void **) &pSMBr); | |
4152 | if (rc) | |
4153 | return rc; | |
4154 | ||
4155 | params = 2; /* level */ | |
4156 | pSMB->TotalDataCount = 0; | |
4157 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4158 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4159 | pSMB->MaxSetupCount = 0; |
4160 | pSMB->Reserved = 0; | |
4161 | pSMB->Flags = 0; | |
4162 | pSMB->Timeout = 0; | |
4163 | pSMB->Reserved2 = 0; | |
4164 | byte_count = params + 1 /* pad */ ; | |
4165 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4166 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4167 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4168 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4169 | pSMB->DataCount = 0; |
4170 | pSMB->DataOffset = 0; | |
4171 | pSMB->SetupCount = 1; | |
4172 | pSMB->Reserved3 = 0; | |
4173 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4174 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4175 | pSMB->hdr.smb_buf_length += byte_count; | |
4176 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4177 | ||
4178 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4179 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4180 | if (rc) { | |
20962438 | 4181 | cFYI(1, ("Send error in QFSInfo = %d", rc)); |
1da177e4 | 4182 | } else { /* decode response */ |
50c2f753 | 4183 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4184 | |
20962438 | 4185 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4186 | rc = -EIO; /* bad smb */ |
4187 | else { | |
4188 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4189 | |
4190 | response_data = | |
4191 | (FILE_SYSTEM_INFO | |
4192 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4193 | data_offset); | |
4194 | FSData->f_bsize = | |
4195 | le32_to_cpu(response_data->BytesPerSector) * | |
4196 | le32_to_cpu(response_data-> | |
4197 | SectorsPerAllocationUnit); | |
4198 | FSData->f_blocks = | |
4199 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4200 | FSData->f_bfree = FSData->f_bavail = | |
4201 | le64_to_cpu(response_data->FreeAllocationUnits); | |
4202 | cFYI(1, | |
4203 | ("Blocks: %lld Free: %lld Block size %ld", | |
4204 | (unsigned long long)FSData->f_blocks, | |
4205 | (unsigned long long)FSData->f_bfree, | |
4206 | FSData->f_bsize)); | |
4207 | } | |
4208 | } | |
4209 | cifs_buf_release(pSMB); | |
4210 | ||
4211 | if (rc == -EAGAIN) | |
4212 | goto QFSInfoRetry; | |
4213 | ||
4214 | return rc; | |
4215 | } | |
4216 | ||
4217 | int | |
737b758c | 4218 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4219 | { |
4220 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4221 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4222 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4223 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4224 | int rc = 0; | |
4225 | int bytes_returned = 0; | |
4226 | __u16 params, byte_count; | |
4227 | ||
4228 | cFYI(1, ("In QFSAttributeInfo")); | |
4229 | QFSAttributeRetry: | |
4230 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4231 | (void **) &pSMBr); | |
4232 | if (rc) | |
4233 | return rc; | |
4234 | ||
4235 | params = 2; /* level */ | |
4236 | pSMB->TotalDataCount = 0; | |
4237 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4238 | /* BB find exact max SMB PDU from sess structure BB */ |
4239 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4240 | pSMB->MaxSetupCount = 0; |
4241 | pSMB->Reserved = 0; | |
4242 | pSMB->Flags = 0; | |
4243 | pSMB->Timeout = 0; | |
4244 | pSMB->Reserved2 = 0; | |
4245 | byte_count = params + 1 /* pad */ ; | |
4246 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4247 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4248 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4249 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4250 | pSMB->DataCount = 0; |
4251 | pSMB->DataOffset = 0; | |
4252 | pSMB->SetupCount = 1; | |
4253 | pSMB->Reserved3 = 0; | |
4254 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4255 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4256 | pSMB->hdr.smb_buf_length += byte_count; | |
4257 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4258 | ||
4259 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4260 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4261 | if (rc) { | |
4262 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
4263 | } else { /* decode response */ | |
4264 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4265 | ||
50c2f753 SF |
4266 | if (rc || (pSMBr->ByteCount < 13)) { |
4267 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4268 | rc = -EIO; /* bad smb */ |
4269 | } else { | |
4270 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4271 | response_data = | |
4272 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4273 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4274 | data_offset); | |
4275 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4276 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4277 | } |
4278 | } | |
4279 | cifs_buf_release(pSMB); | |
4280 | ||
4281 | if (rc == -EAGAIN) | |
4282 | goto QFSAttributeRetry; | |
4283 | ||
4284 | return rc; | |
4285 | } | |
4286 | ||
4287 | int | |
737b758c | 4288 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4289 | { |
4290 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4291 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4292 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4293 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4294 | int rc = 0; | |
4295 | int bytes_returned = 0; | |
4296 | __u16 params, byte_count; | |
4297 | ||
4298 | cFYI(1, ("In QFSDeviceInfo")); | |
4299 | QFSDeviceRetry: | |
4300 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4301 | (void **) &pSMBr); | |
4302 | if (rc) | |
4303 | return rc; | |
4304 | ||
4305 | params = 2; /* level */ | |
4306 | pSMB->TotalDataCount = 0; | |
4307 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4308 | /* BB find exact max SMB PDU from sess structure BB */ |
4309 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4310 | pSMB->MaxSetupCount = 0; |
4311 | pSMB->Reserved = 0; | |
4312 | pSMB->Flags = 0; | |
4313 | pSMB->Timeout = 0; | |
4314 | pSMB->Reserved2 = 0; | |
4315 | byte_count = params + 1 /* pad */ ; | |
4316 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4317 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4318 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4319 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4320 | |
4321 | pSMB->DataCount = 0; | |
4322 | pSMB->DataOffset = 0; | |
4323 | pSMB->SetupCount = 1; | |
4324 | pSMB->Reserved3 = 0; | |
4325 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4326 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4327 | pSMB->hdr.smb_buf_length += byte_count; | |
4328 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4329 | ||
4330 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4331 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4332 | if (rc) { | |
4333 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
4334 | } else { /* decode response */ | |
4335 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4336 | ||
630f3f0c | 4337 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) |
1da177e4 LT |
4338 | rc = -EIO; /* bad smb */ |
4339 | else { | |
4340 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4341 | response_data = | |
737b758c SF |
4342 | (FILE_SYSTEM_DEVICE_INFO *) |
4343 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4344 | data_offset); |
4345 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4346 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4347 | } |
4348 | } | |
4349 | cifs_buf_release(pSMB); | |
4350 | ||
4351 | if (rc == -EAGAIN) | |
4352 | goto QFSDeviceRetry; | |
4353 | ||
4354 | return rc; | |
4355 | } | |
4356 | ||
4357 | int | |
737b758c | 4358 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4359 | { |
4360 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4361 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4362 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4363 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4364 | int rc = 0; | |
4365 | int bytes_returned = 0; | |
4366 | __u16 params, byte_count; | |
4367 | ||
4368 | cFYI(1, ("In QFSUnixInfo")); | |
4369 | QFSUnixRetry: | |
4370 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4371 | (void **) &pSMBr); | |
4372 | if (rc) | |
4373 | return rc; | |
4374 | ||
4375 | params = 2; /* level */ | |
4376 | pSMB->TotalDataCount = 0; | |
4377 | pSMB->DataCount = 0; | |
4378 | pSMB->DataOffset = 0; | |
4379 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4380 | /* BB find exact max SMB PDU from sess structure BB */ |
4381 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4382 | pSMB->MaxSetupCount = 0; |
4383 | pSMB->Reserved = 0; | |
4384 | pSMB->Flags = 0; | |
4385 | pSMB->Timeout = 0; | |
4386 | pSMB->Reserved2 = 0; | |
4387 | byte_count = params + 1 /* pad */ ; | |
4388 | pSMB->ParameterCount = cpu_to_le16(params); | |
4389 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4390 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4391 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4392 | pSMB->SetupCount = 1; |
4393 | pSMB->Reserved3 = 0; | |
4394 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4395 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4396 | pSMB->hdr.smb_buf_length += byte_count; | |
4397 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4398 | ||
4399 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4400 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4401 | if (rc) { | |
4402 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4403 | } else { /* decode response */ | |
4404 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4405 | ||
4406 | if (rc || (pSMBr->ByteCount < 13)) { | |
4407 | rc = -EIO; /* bad smb */ | |
4408 | } else { | |
4409 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4410 | response_data = | |
4411 | (FILE_SYSTEM_UNIX_INFO | |
4412 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4413 | data_offset); | |
4414 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4415 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4416 | } |
4417 | } | |
4418 | cifs_buf_release(pSMB); | |
4419 | ||
4420 | if (rc == -EAGAIN) | |
4421 | goto QFSUnixRetry; | |
4422 | ||
4423 | ||
4424 | return rc; | |
4425 | } | |
4426 | ||
ac67055e | 4427 | int |
45abc6ee | 4428 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4429 | { |
4430 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4431 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4432 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4433 | int rc = 0; | |
4434 | int bytes_returned = 0; | |
4435 | __u16 params, param_offset, offset, byte_count; | |
4436 | ||
4437 | cFYI(1, ("In SETFSUnixInfo")); | |
4438 | SETFSUnixRetry: | |
f26282c9 | 4439 | /* BB switch to small buf init to save memory */ |
ac67055e JA |
4440 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
4441 | (void **) &pSMBr); | |
4442 | if (rc) | |
4443 | return rc; | |
4444 | ||
4445 | params = 4; /* 2 bytes zero followed by info level. */ | |
4446 | pSMB->MaxSetupCount = 0; | |
4447 | pSMB->Reserved = 0; | |
4448 | pSMB->Flags = 0; | |
4449 | pSMB->Timeout = 0; | |
4450 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4451 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4452 | - 4; | |
ac67055e JA |
4453 | offset = param_offset + params; |
4454 | ||
4455 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4456 | /* BB find exact max SMB PDU from sess structure BB */ |
4457 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4458 | pSMB->SetupCount = 1; |
4459 | pSMB->Reserved3 = 0; | |
4460 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4461 | byte_count = 1 /* pad */ + params + 12; | |
4462 | ||
4463 | pSMB->DataCount = cpu_to_le16(12); | |
4464 | pSMB->ParameterCount = cpu_to_le16(params); | |
4465 | pSMB->TotalDataCount = pSMB->DataCount; | |
4466 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4467 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4468 | pSMB->DataOffset = cpu_to_le16(offset); | |
4469 | ||
4470 | /* Params. */ | |
4471 | pSMB->FileNum = 0; | |
4472 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4473 | ||
4474 | /* Data. */ | |
4475 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4476 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4477 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4478 | ||
4479 | pSMB->hdr.smb_buf_length += byte_count; | |
4480 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4481 | ||
4482 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4483 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4484 | if (rc) { | |
4485 | cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); | |
4486 | } else { /* decode response */ | |
4487 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4488 | if (rc) |
ac67055e | 4489 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4490 | } |
4491 | cifs_buf_release(pSMB); | |
4492 | ||
4493 | if (rc == -EAGAIN) | |
4494 | goto SETFSUnixRetry; | |
4495 | ||
4496 | return rc; | |
4497 | } | |
4498 | ||
4499 | ||
1da177e4 LT |
4500 | |
4501 | int | |
4502 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4503 | struct kstatfs *FSData) |
1da177e4 LT |
4504 | { |
4505 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4506 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4507 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4508 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4509 | int rc = 0; | |
4510 | int bytes_returned = 0; | |
4511 | __u16 params, byte_count; | |
4512 | ||
4513 | cFYI(1, ("In QFSPosixInfo")); | |
4514 | QFSPosixRetry: | |
4515 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4516 | (void **) &pSMBr); | |
4517 | if (rc) | |
4518 | return rc; | |
4519 | ||
4520 | params = 2; /* level */ | |
4521 | pSMB->TotalDataCount = 0; | |
4522 | pSMB->DataCount = 0; | |
4523 | pSMB->DataOffset = 0; | |
4524 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4525 | /* BB find exact max SMB PDU from sess structure BB */ |
4526 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4527 | pSMB->MaxSetupCount = 0; |
4528 | pSMB->Reserved = 0; | |
4529 | pSMB->Flags = 0; | |
4530 | pSMB->Timeout = 0; | |
4531 | pSMB->Reserved2 = 0; | |
4532 | byte_count = params + 1 /* pad */ ; | |
4533 | pSMB->ParameterCount = cpu_to_le16(params); | |
4534 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4535 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4536 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4537 | pSMB->SetupCount = 1; |
4538 | pSMB->Reserved3 = 0; | |
4539 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4540 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4541 | pSMB->hdr.smb_buf_length += byte_count; | |
4542 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4543 | ||
4544 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4545 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4546 | if (rc) { | |
4547 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4548 | } else { /* decode response */ | |
4549 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4550 | ||
4551 | if (rc || (pSMBr->ByteCount < 13)) { | |
4552 | rc = -EIO; /* bad smb */ | |
4553 | } else { | |
4554 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4555 | response_data = | |
4556 | (FILE_SYSTEM_POSIX_INFO | |
4557 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4558 | data_offset); | |
4559 | FSData->f_bsize = | |
4560 | le32_to_cpu(response_data->BlockSize); | |
4561 | FSData->f_blocks = | |
4562 | le64_to_cpu(response_data->TotalBlocks); | |
4563 | FSData->f_bfree = | |
4564 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4565 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4566 | FSData->f_bavail = FSData->f_bfree; |
4567 | } else { | |
4568 | FSData->f_bavail = | |
50c2f753 | 4569 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4570 | } |
790fe579 | 4571 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4572 | FSData->f_files = |
50c2f753 | 4573 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4574 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4575 | FSData->f_ffree = |
50c2f753 | 4576 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4577 | } |
4578 | } | |
4579 | cifs_buf_release(pSMB); | |
4580 | ||
4581 | if (rc == -EAGAIN) | |
4582 | goto QFSPosixRetry; | |
4583 | ||
4584 | return rc; | |
4585 | } | |
4586 | ||
4587 | ||
50c2f753 SF |
4588 | /* We can not use write of zero bytes trick to |
4589 | set file size due to need for large file support. Also note that | |
4590 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4591 | routine which is only needed to work around a sharing violation bug |
4592 | in Samba which this routine can run into */ | |
4593 | ||
4594 | int | |
4595 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4596 | __u64 size, bool SetAllocation, |
737b758c | 4597 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4598 | { |
4599 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4600 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4601 | struct file_end_of_file_info *parm_data; | |
4602 | int name_len; | |
4603 | int rc = 0; | |
4604 | int bytes_returned = 0; | |
4605 | __u16 params, byte_count, data_count, param_offset, offset; | |
4606 | ||
4607 | cFYI(1, ("In SetEOF")); | |
4608 | SetEOFRetry: | |
4609 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4610 | (void **) &pSMBr); | |
4611 | if (rc) | |
4612 | return rc; | |
4613 | ||
4614 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4615 | name_len = | |
b1a45695 | 4616 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4617 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4618 | name_len++; /* trailing null */ |
4619 | name_len *= 2; | |
3e87d803 | 4620 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4621 | name_len = strnlen(fileName, PATH_MAX); |
4622 | name_len++; /* trailing null */ | |
4623 | strncpy(pSMB->FileName, fileName, name_len); | |
4624 | } | |
4625 | params = 6 + name_len; | |
26f57364 | 4626 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4627 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4628 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4629 | pSMB->MaxSetupCount = 0; |
4630 | pSMB->Reserved = 0; | |
4631 | pSMB->Flags = 0; | |
4632 | pSMB->Timeout = 0; | |
4633 | pSMB->Reserved2 = 0; | |
4634 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4635 | InformationLevel) - 4; |
1da177e4 | 4636 | offset = param_offset + params; |
790fe579 | 4637 | if (SetAllocation) { |
50c2f753 SF |
4638 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4639 | pSMB->InformationLevel = | |
4640 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4641 | else | |
4642 | pSMB->InformationLevel = | |
4643 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4644 | } else /* Set File Size */ { | |
1da177e4 LT |
4645 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4646 | pSMB->InformationLevel = | |
50c2f753 | 4647 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4648 | else |
4649 | pSMB->InformationLevel = | |
50c2f753 | 4650 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4651 | } |
4652 | ||
4653 | parm_data = | |
4654 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4655 | offset); | |
4656 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4657 | pSMB->DataOffset = cpu_to_le16(offset); | |
4658 | pSMB->SetupCount = 1; | |
4659 | pSMB->Reserved3 = 0; | |
4660 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4661 | byte_count = 3 /* pad */ + params + data_count; | |
4662 | pSMB->DataCount = cpu_to_le16(data_count); | |
4663 | pSMB->TotalDataCount = pSMB->DataCount; | |
4664 | pSMB->ParameterCount = cpu_to_le16(params); | |
4665 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4666 | pSMB->Reserved4 = 0; | |
4667 | pSMB->hdr.smb_buf_length += byte_count; | |
4668 | parm_data->FileSize = cpu_to_le64(size); | |
4669 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4670 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4671 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4672 | if (rc) |
1da177e4 | 4673 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); |
1da177e4 LT |
4674 | |
4675 | cifs_buf_release(pSMB); | |
4676 | ||
4677 | if (rc == -EAGAIN) | |
4678 | goto SetEOFRetry; | |
4679 | ||
4680 | return rc; | |
4681 | } | |
4682 | ||
4683 | int | |
50c2f753 | 4684 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4685 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4686 | { |
4687 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4688 | char *data_offset; |
4689 | struct file_end_of_file_info *parm_data; | |
4690 | int rc = 0; | |
1da177e4 LT |
4691 | __u16 params, param_offset, offset, byte_count, count; |
4692 | ||
4693 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
4694 | (long long)size)); | |
cd63499c SF |
4695 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4696 | ||
1da177e4 LT |
4697 | if (rc) |
4698 | return rc; | |
4699 | ||
4700 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4701 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4702 | |
1da177e4 LT |
4703 | params = 6; |
4704 | pSMB->MaxSetupCount = 0; | |
4705 | pSMB->Reserved = 0; | |
4706 | pSMB->Flags = 0; | |
4707 | pSMB->Timeout = 0; | |
4708 | pSMB->Reserved2 = 0; | |
4709 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4710 | offset = param_offset + params; | |
4711 | ||
50c2f753 | 4712 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 LT |
4713 | |
4714 | count = sizeof(struct file_end_of_file_info); | |
4715 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4716 | /* BB find exact max SMB PDU from sess structure BB */ |
4717 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4718 | pSMB->SetupCount = 1; |
4719 | pSMB->Reserved3 = 0; | |
4720 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4721 | byte_count = 3 /* pad */ + params + count; | |
4722 | pSMB->DataCount = cpu_to_le16(count); | |
4723 | pSMB->ParameterCount = cpu_to_le16(params); | |
4724 | pSMB->TotalDataCount = pSMB->DataCount; | |
4725 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4726 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4727 | parm_data = | |
50c2f753 SF |
4728 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4729 | + offset); | |
1da177e4 LT |
4730 | pSMB->DataOffset = cpu_to_le16(offset); |
4731 | parm_data->FileSize = cpu_to_le64(size); | |
4732 | pSMB->Fid = fid; | |
790fe579 | 4733 | if (SetAllocation) { |
1da177e4 LT |
4734 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4735 | pSMB->InformationLevel = | |
4736 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4737 | else | |
4738 | pSMB->InformationLevel = | |
4739 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4740 | } else /* Set File Size */ { |
1da177e4 LT |
4741 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4742 | pSMB->InformationLevel = | |
50c2f753 | 4743 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4744 | else |
4745 | pSMB->InformationLevel = | |
50c2f753 | 4746 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4747 | } |
4748 | pSMB->Reserved4 = 0; | |
4749 | pSMB->hdr.smb_buf_length += byte_count; | |
4750 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
133672ef | 4751 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 LT |
4752 | if (rc) { |
4753 | cFYI(1, | |
4754 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
4755 | rc)); | |
4756 | } | |
4757 | ||
50c2f753 | 4758 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4759 | since file handle passed in no longer valid */ |
4760 | ||
4761 | return rc; | |
4762 | } | |
4763 | ||
50c2f753 | 4764 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4765 | an open handle, rather than by pathname - this is awkward due to |
4766 | potential access conflicts on the open, but it is unavoidable for these | |
4767 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4768 | time and resort to the original setpathinfo level which takes the ancient | |
4769 | DOS time format with 2 second granularity */ | |
4770 | int | |
2dd2dfa0 JL |
4771 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
4772 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
4773 | { |
4774 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4775 | char *data_offset; |
4776 | int rc = 0; | |
1da177e4 LT |
4777 | __u16 params, param_offset, offset, byte_count, count; |
4778 | ||
4779 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
cd63499c SF |
4780 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4781 | ||
1da177e4 LT |
4782 | if (rc) |
4783 | return rc; | |
4784 | ||
2dd2dfa0 JL |
4785 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
4786 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4787 | |
1da177e4 LT |
4788 | params = 6; |
4789 | pSMB->MaxSetupCount = 0; | |
4790 | pSMB->Reserved = 0; | |
4791 | pSMB->Flags = 0; | |
4792 | pSMB->Timeout = 0; | |
4793 | pSMB->Reserved2 = 0; | |
4794 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4795 | offset = param_offset + params; | |
4796 | ||
50c2f753 | 4797 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 4798 | |
26f57364 | 4799 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4800 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4801 | /* BB find max SMB PDU from sess */ |
4802 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4803 | pSMB->SetupCount = 1; |
4804 | pSMB->Reserved3 = 0; | |
4805 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4806 | byte_count = 3 /* pad */ + params + count; | |
4807 | pSMB->DataCount = cpu_to_le16(count); | |
4808 | pSMB->ParameterCount = cpu_to_le16(params); | |
4809 | pSMB->TotalDataCount = pSMB->DataCount; | |
4810 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4811 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4812 | pSMB->DataOffset = cpu_to_le16(offset); | |
4813 | pSMB->Fid = fid; | |
4814 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4815 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4816 | else | |
4817 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4818 | pSMB->Reserved4 = 0; | |
4819 | pSMB->hdr.smb_buf_length += byte_count; | |
4820 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 4821 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 4822 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4823 | if (rc) |
50c2f753 | 4824 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); |
1da177e4 | 4825 | |
50c2f753 | 4826 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4827 | since file handle passed in no longer valid */ |
4828 | ||
4829 | return rc; | |
4830 | } | |
4831 | ||
6d22f098 JL |
4832 | int |
4833 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
4834 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
4835 | { | |
4836 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4837 | char *data_offset; | |
4838 | int rc = 0; | |
4839 | __u16 params, param_offset, offset, byte_count, count; | |
4840 | ||
4841 | cFYI(1, ("Set File Disposition (via SetFileInfo)")); | |
4842 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
4843 | ||
4844 | if (rc) | |
4845 | return rc; | |
4846 | ||
4847 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4848 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
4849 | ||
4850 | params = 6; | |
4851 | pSMB->MaxSetupCount = 0; | |
4852 | pSMB->Reserved = 0; | |
4853 | pSMB->Flags = 0; | |
4854 | pSMB->Timeout = 0; | |
4855 | pSMB->Reserved2 = 0; | |
4856 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4857 | offset = param_offset + params; | |
4858 | ||
4859 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4860 | ||
4861 | count = 1; | |
4862 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4863 | /* BB find max SMB PDU from sess */ | |
4864 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4865 | pSMB->SetupCount = 1; | |
4866 | pSMB->Reserved3 = 0; | |
4867 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4868 | byte_count = 3 /* pad */ + params + count; | |
4869 | pSMB->DataCount = cpu_to_le16(count); | |
4870 | pSMB->ParameterCount = cpu_to_le16(params); | |
4871 | pSMB->TotalDataCount = pSMB->DataCount; | |
4872 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4873 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4874 | pSMB->DataOffset = cpu_to_le16(offset); | |
4875 | pSMB->Fid = fid; | |
4876 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
4877 | pSMB->Reserved4 = 0; | |
4878 | pSMB->hdr.smb_buf_length += byte_count; | |
4879 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4880 | *data_offset = delete_file ? 1 : 0; | |
4881 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
4882 | if (rc) | |
4883 | cFYI(1, ("Send error in SetFileDisposition = %d", rc)); | |
4884 | ||
4885 | return rc; | |
4886 | } | |
1da177e4 LT |
4887 | |
4888 | int | |
6fc000e5 JL |
4889 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
4890 | const char *fileName, const FILE_BASIC_INFO *data, | |
4891 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
4892 | { |
4893 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4894 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4895 | int name_len; | |
4896 | int rc = 0; | |
4897 | int bytes_returned = 0; | |
4898 | char *data_offset; | |
4899 | __u16 params, param_offset, offset, byte_count, count; | |
4900 | ||
4901 | cFYI(1, ("In SetTimes")); | |
4902 | ||
4903 | SetTimesRetry: | |
4904 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4905 | (void **) &pSMBr); | |
4906 | if (rc) | |
4907 | return rc; | |
4908 | ||
4909 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4910 | name_len = | |
b1a45695 | 4911 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4912 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4913 | name_len++; /* trailing null */ |
4914 | name_len *= 2; | |
50c2f753 | 4915 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4916 | name_len = strnlen(fileName, PATH_MAX); |
4917 | name_len++; /* trailing null */ | |
4918 | strncpy(pSMB->FileName, fileName, name_len); | |
4919 | } | |
4920 | ||
4921 | params = 6 + name_len; | |
26f57364 | 4922 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4923 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4924 | /* BB find max SMB PDU from sess structure BB */ |
4925 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4926 | pSMB->MaxSetupCount = 0; |
4927 | pSMB->Reserved = 0; | |
4928 | pSMB->Flags = 0; | |
4929 | pSMB->Timeout = 0; | |
4930 | pSMB->Reserved2 = 0; | |
4931 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4932 | InformationLevel) - 4; |
1da177e4 LT |
4933 | offset = param_offset + params; |
4934 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4935 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4936 | pSMB->DataOffset = cpu_to_le16(offset); | |
4937 | pSMB->SetupCount = 1; | |
4938 | pSMB->Reserved3 = 0; | |
4939 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4940 | byte_count = 3 /* pad */ + params + count; | |
4941 | ||
4942 | pSMB->DataCount = cpu_to_le16(count); | |
4943 | pSMB->ParameterCount = cpu_to_le16(params); | |
4944 | pSMB->TotalDataCount = pSMB->DataCount; | |
4945 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4946 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4947 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4948 | else | |
4949 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4950 | pSMB->Reserved4 = 0; | |
4951 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 4952 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
4953 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4954 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4955 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4956 | if (rc) |
1da177e4 | 4957 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); |
1da177e4 LT |
4958 | |
4959 | cifs_buf_release(pSMB); | |
4960 | ||
4961 | if (rc == -EAGAIN) | |
4962 | goto SetTimesRetry; | |
4963 | ||
4964 | return rc; | |
4965 | } | |
4966 | ||
4967 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
4968 | /* Can be used to set attributes */ | |
4969 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
4970 | handling it anyway and NT4 was what we thought it would be needed for | |
4971 | Do not delete it until we prove whether needed for Win9x though */ | |
4972 | int | |
4973 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
4974 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
4975 | { | |
4976 | SETATTR_REQ *pSMB = NULL; | |
4977 | SETATTR_RSP *pSMBr = NULL; | |
4978 | int rc = 0; | |
4979 | int bytes_returned; | |
4980 | int name_len; | |
4981 | ||
4982 | cFYI(1, ("In SetAttrLegacy")); | |
4983 | ||
4984 | SetAttrLgcyRetry: | |
4985 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
4986 | (void **) &pSMBr); | |
4987 | if (rc) | |
4988 | return rc; | |
4989 | ||
4990 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4991 | name_len = | |
50c2f753 | 4992 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
4993 | PATH_MAX, nls_codepage); |
4994 | name_len++; /* trailing null */ | |
4995 | name_len *= 2; | |
50c2f753 | 4996 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4997 | name_len = strnlen(fileName, PATH_MAX); |
4998 | name_len++; /* trailing null */ | |
4999 | strncpy(pSMB->fileName, fileName, name_len); | |
5000 | } | |
5001 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5002 | pSMB->BufferFormat = 0x04; | |
5003 | pSMB->hdr.smb_buf_length += name_len + 1; | |
5004 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
5005 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5006 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5007 | if (rc) |
1da177e4 | 5008 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); |
1da177e4 LT |
5009 | |
5010 | cifs_buf_release(pSMB); | |
5011 | ||
5012 | if (rc == -EAGAIN) | |
5013 | goto SetAttrLgcyRetry; | |
5014 | ||
5015 | return rc; | |
5016 | } | |
5017 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5018 | ||
654cf14a JL |
5019 | static void |
5020 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5021 | const struct cifs_unix_set_info_args *args) | |
5022 | { | |
5023 | u64 mode = args->mode; | |
5024 | ||
5025 | /* | |
5026 | * Samba server ignores set of file size to zero due to bugs in some | |
5027 | * older clients, but we should be precise - we use SetFileSize to | |
5028 | * set file size and do not want to truncate file size to zero | |
5029 | * accidently as happened on one Samba server beta by putting | |
5030 | * zero instead of -1 here | |
5031 | */ | |
5032 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5033 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5034 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5035 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5036 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5037 | data_offset->Uid = cpu_to_le64(args->uid); | |
5038 | data_offset->Gid = cpu_to_le64(args->gid); | |
5039 | /* better to leave device as zero when it is */ | |
5040 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5041 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5042 | data_offset->Permissions = cpu_to_le64(mode); | |
5043 | ||
5044 | if (S_ISREG(mode)) | |
5045 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5046 | else if (S_ISDIR(mode)) | |
5047 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5048 | else if (S_ISLNK(mode)) | |
5049 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5050 | else if (S_ISCHR(mode)) | |
5051 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5052 | else if (S_ISBLK(mode)) | |
5053 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5054 | else if (S_ISFIFO(mode)) | |
5055 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5056 | else if (S_ISSOCK(mode)) | |
5057 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5058 | } | |
5059 | ||
3bbeeb3c JL |
5060 | int |
5061 | CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon, | |
5062 | const struct cifs_unix_set_info_args *args, | |
5063 | u16 fid, u32 pid_of_opener) | |
5064 | { | |
5065 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5066 | FILE_UNIX_BASIC_INFO *data_offset; | |
5067 | int rc = 0; | |
5068 | u16 params, param_offset, offset, byte_count, count; | |
5069 | ||
5070 | cFYI(1, ("Set Unix Info (via SetFileInfo)")); | |
5071 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
5072 | ||
5073 | if (rc) | |
5074 | return rc; | |
5075 | ||
5076 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5077 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5078 | ||
5079 | params = 6; | |
5080 | pSMB->MaxSetupCount = 0; | |
5081 | pSMB->Reserved = 0; | |
5082 | pSMB->Flags = 0; | |
5083 | pSMB->Timeout = 0; | |
5084 | pSMB->Reserved2 = 0; | |
5085 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5086 | offset = param_offset + params; | |
5087 | ||
5088 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5089 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5090 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5091 | ||
5092 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5093 | /* BB find max SMB PDU from sess */ | |
5094 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5095 | pSMB->SetupCount = 1; | |
5096 | pSMB->Reserved3 = 0; | |
5097 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5098 | byte_count = 3 /* pad */ + params + count; | |
5099 | pSMB->DataCount = cpu_to_le16(count); | |
5100 | pSMB->ParameterCount = cpu_to_le16(params); | |
5101 | pSMB->TotalDataCount = pSMB->DataCount; | |
5102 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5103 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5104 | pSMB->DataOffset = cpu_to_le16(offset); | |
5105 | pSMB->Fid = fid; | |
5106 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5107 | pSMB->Reserved4 = 0; | |
5108 | pSMB->hdr.smb_buf_length += byte_count; | |
5109 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5110 | ||
5111 | cifs_fill_unix_set_info(data_offset, args); | |
5112 | ||
5113 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5114 | if (rc) | |
5115 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); | |
5116 | ||
5117 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5118 | since file handle passed in no longer valid */ | |
5119 | ||
5120 | return rc; | |
5121 | } | |
5122 | ||
1da177e4 | 5123 | int |
01ea95e3 JL |
5124 | CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
5125 | const struct cifs_unix_set_info_args *args, | |
5126 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5127 | { |
5128 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5129 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5130 | int name_len; | |
5131 | int rc = 0; | |
5132 | int bytes_returned = 0; | |
5133 | FILE_UNIX_BASIC_INFO *data_offset; | |
5134 | __u16 params, param_offset, offset, count, byte_count; | |
5135 | ||
5136 | cFYI(1, ("In SetUID/GID/Mode")); | |
5137 | setPermsRetry: | |
5138 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5139 | (void **) &pSMBr); | |
5140 | if (rc) | |
5141 | return rc; | |
5142 | ||
5143 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5144 | name_len = | |
50c2f753 | 5145 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5146 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5147 | name_len++; /* trailing null */ |
5148 | name_len *= 2; | |
3e87d803 | 5149 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5150 | name_len = strnlen(fileName, PATH_MAX); |
5151 | name_len++; /* trailing null */ | |
5152 | strncpy(pSMB->FileName, fileName, name_len); | |
5153 | } | |
5154 | ||
5155 | params = 6 + name_len; | |
26f57364 | 5156 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5157 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5158 | /* BB find max SMB PDU from sess structure BB */ |
5159 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5160 | pSMB->MaxSetupCount = 0; |
5161 | pSMB->Reserved = 0; | |
5162 | pSMB->Flags = 0; | |
5163 | pSMB->Timeout = 0; | |
5164 | pSMB->Reserved2 = 0; | |
5165 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5166 | InformationLevel) - 4; |
1da177e4 LT |
5167 | offset = param_offset + params; |
5168 | data_offset = | |
5169 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5170 | offset); | |
5171 | memset(data_offset, 0, count); | |
5172 | pSMB->DataOffset = cpu_to_le16(offset); | |
5173 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5174 | pSMB->SetupCount = 1; | |
5175 | pSMB->Reserved3 = 0; | |
5176 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5177 | byte_count = 3 /* pad */ + params + count; | |
5178 | pSMB->ParameterCount = cpu_to_le16(params); | |
5179 | pSMB->DataCount = cpu_to_le16(count); | |
5180 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5181 | pSMB->TotalDataCount = pSMB->DataCount; | |
5182 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5183 | pSMB->Reserved4 = 0; | |
5184 | pSMB->hdr.smb_buf_length += byte_count; | |
1da177e4 | 5185 | |
654cf14a | 5186 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5187 | |
5188 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5189 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5190 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5191 | if (rc) |
1da177e4 | 5192 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); |
1da177e4 | 5193 | |
0d817bc0 | 5194 | cifs_buf_release(pSMB); |
1da177e4 LT |
5195 | if (rc == -EAGAIN) |
5196 | goto setPermsRetry; | |
5197 | return rc; | |
5198 | } | |
5199 | ||
50c2f753 | 5200 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
167a251a | 5201 | const int notify_subdirs, const __u16 netfid, |
50c2f753 | 5202 | __u32 filter, struct file *pfile, int multishot, |
167a251a | 5203 | const struct nls_table *nls_codepage) |
1da177e4 LT |
5204 | { |
5205 | int rc = 0; | |
50c2f753 SF |
5206 | struct smb_com_transaction_change_notify_req *pSMB = NULL; |
5207 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
abb15b8a | 5208 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
5209 | int bytes_returned; |
5210 | ||
50c2f753 | 5211 | cFYI(1, ("In CIFSSMBNotify for file handle %d", (int)netfid)); |
1da177e4 | 5212 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
50c2f753 | 5213 | (void **) &pSMBr); |
1da177e4 LT |
5214 | if (rc) |
5215 | return rc; | |
5216 | ||
5217 | pSMB->TotalParameterCount = 0 ; | |
5218 | pSMB->TotalDataCount = 0; | |
5219 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5220 | /* BB find exact data count max from sess structure BB */ | |
5221 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
5222 | /* BB VERIFY verify which is correct for above BB */ |
5223 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5224 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5225 | ||
1da177e4 LT |
5226 | pSMB->MaxSetupCount = 4; |
5227 | pSMB->Reserved = 0; | |
5228 | pSMB->ParameterOffset = 0; | |
5229 | pSMB->DataCount = 0; | |
5230 | pSMB->DataOffset = 0; | |
5231 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5232 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5233 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 5234 | if (notify_subdirs) |
1da177e4 LT |
5235 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
5236 | pSMB->Reserved2 = 0; | |
5237 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5238 | pSMB->Fid = netfid; /* file handle always le */ | |
5239 | pSMB->ByteCount = 0; | |
5240 | ||
5241 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef SF |
5242 | (struct smb_hdr *)pSMBr, &bytes_returned, |
5243 | CIFS_ASYNC_OP); | |
1da177e4 LT |
5244 | if (rc) { |
5245 | cFYI(1, ("Error in Notify = %d", rc)); | |
ff5dbd9e SF |
5246 | } else { |
5247 | /* Add file to outstanding requests */ | |
50c2f753 | 5248 | /* BB change to kmem cache alloc */ |
5cbded58 | 5249 | dnotify_req = kmalloc( |
47c786e7 SF |
5250 | sizeof(struct dir_notify_req), |
5251 | GFP_KERNEL); | |
790fe579 | 5252 | if (dnotify_req) { |
47c786e7 SF |
5253 | dnotify_req->Pid = pSMB->hdr.Pid; |
5254 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5255 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5256 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5257 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5258 | dnotify_req->netfid = netfid; | |
5259 | dnotify_req->pfile = pfile; | |
5260 | dnotify_req->filter = filter; | |
5261 | dnotify_req->multishot = multishot; | |
5262 | spin_lock(&GlobalMid_Lock); | |
50c2f753 | 5263 | list_add_tail(&dnotify_req->lhead, |
47c786e7 SF |
5264 | &GlobalDnotifyReqList); |
5265 | spin_unlock(&GlobalMid_Lock); | |
50c2f753 | 5266 | } else |
47c786e7 | 5267 | rc = -ENOMEM; |
1da177e4 LT |
5268 | } |
5269 | cifs_buf_release(pSMB); | |
50c2f753 | 5270 | return rc; |
1da177e4 | 5271 | } |
31c0519f | 5272 | |
1da177e4 | 5273 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5274 | /* |
5275 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5276 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5277 | * it looks for that attribute name and stuffs that value into the EAData | |
5278 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5279 | * buffer. In both cases, the return value is either the length of the | |
5280 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5281 | * the data isn't copied to it, but the length is returned. | |
5282 | */ | |
1da177e4 LT |
5283 | ssize_t |
5284 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
31c0519f JL |
5285 | const unsigned char *searchName, const unsigned char *ea_name, |
5286 | char *EAData, size_t buf_size, | |
5287 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5288 | { |
5289 | /* BB assumes one setup word */ | |
5290 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5291 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5292 | int rc = 0; | |
5293 | int bytes_returned; | |
6e462b9f | 5294 | int list_len; |
f0d3868b | 5295 | struct fealist *ea_response_data; |
50c2f753 SF |
5296 | struct fea *temp_fea; |
5297 | char *temp_ptr; | |
0cd126b5 | 5298 | char *end_of_smb; |
f0d3868b | 5299 | __u16 params, byte_count, data_offset; |
1da177e4 LT |
5300 | |
5301 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
5302 | QAllEAsRetry: | |
5303 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5304 | (void **) &pSMBr); | |
5305 | if (rc) | |
5306 | return rc; | |
5307 | ||
5308 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5309 | list_len = |
50c2f753 | 5310 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5311 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5312 | list_len++; /* trailing null */ |
5313 | list_len *= 2; | |
1da177e4 | 5314 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5315 | list_len = strnlen(searchName, PATH_MAX); |
5316 | list_len++; /* trailing null */ | |
5317 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5318 | } |
5319 | ||
6e462b9f | 5320 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5321 | pSMB->TotalDataCount = 0; |
5322 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5323 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5324 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5325 | pSMB->MaxSetupCount = 0; |
5326 | pSMB->Reserved = 0; | |
5327 | pSMB->Flags = 0; | |
5328 | pSMB->Timeout = 0; | |
5329 | pSMB->Reserved2 = 0; | |
5330 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5331 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5332 | pSMB->DataCount = 0; |
5333 | pSMB->DataOffset = 0; | |
5334 | pSMB->SetupCount = 1; | |
5335 | pSMB->Reserved3 = 0; | |
5336 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5337 | byte_count = params + 1 /* pad */ ; | |
5338 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5339 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5340 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5341 | pSMB->Reserved4 = 0; | |
5342 | pSMB->hdr.smb_buf_length += byte_count; | |
5343 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5344 | ||
5345 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5346 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5347 | if (rc) { | |
5348 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
f0d3868b JL |
5349 | goto QAllEAsOut; |
5350 | } | |
1da177e4 | 5351 | |
f0d3868b JL |
5352 | |
5353 | /* BB also check enough total bytes returned */ | |
5354 | /* BB we need to improve the validity checking | |
5355 | of these trans2 responses */ | |
5356 | ||
5357 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5358 | if (rc || (pSMBr->ByteCount < 4)) { | |
5359 | rc = -EIO; /* bad smb */ | |
5360 | goto QAllEAsOut; | |
5361 | } | |
5362 | ||
5363 | /* check that length of list is not more than bcc */ | |
5364 | /* check that each entry does not go beyond length | |
5365 | of list */ | |
5366 | /* check that each element of each entry does not | |
5367 | go beyond end of list */ | |
5368 | /* validate_trans2_offsets() */ | |
5369 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5370 | ||
5371 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5372 | ea_response_data = (struct fealist *) | |
5373 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5374 | ||
6e462b9f JL |
5375 | list_len = le32_to_cpu(ea_response_data->list_len); |
5376 | cFYI(1, ("ea length %d", list_len)); | |
5377 | if (list_len <= 8) { | |
f0d3868b JL |
5378 | cFYI(1, ("empty EA list returned from server")); |
5379 | goto QAllEAsOut; | |
5380 | } | |
5381 | ||
0cd126b5 JL |
5382 | /* make sure list_len doesn't go past end of SMB */ |
5383 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + BCC(&pSMBr->hdr); | |
5384 | if ((char *)ea_response_data + list_len > end_of_smb) { | |
5385 | cFYI(1, ("EA list appears to go beyond SMB")); | |
5386 | rc = -EIO; | |
5387 | goto QAllEAsOut; | |
5388 | } | |
5389 | ||
f0d3868b | 5390 | /* account for ea list len */ |
6e462b9f | 5391 | list_len -= 4; |
f0d3868b JL |
5392 | temp_fea = ea_response_data->list; |
5393 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5394 | while (list_len > 0) { |
122ca007 | 5395 | unsigned int name_len; |
f0d3868b | 5396 | __u16 value_len; |
0cd126b5 | 5397 | |
6e462b9f | 5398 | list_len -= 4; |
f0d3868b | 5399 | temp_ptr += 4; |
0cd126b5 JL |
5400 | /* make sure we can read name_len and value_len */ |
5401 | if (list_len < 0) { | |
5402 | cFYI(1, ("EA entry goes beyond length of list")); | |
5403 | rc = -EIO; | |
5404 | goto QAllEAsOut; | |
5405 | } | |
5406 | ||
5407 | name_len = temp_fea->name_len; | |
5408 | value_len = le16_to_cpu(temp_fea->value_len); | |
5409 | list_len -= name_len + 1 + value_len; | |
5410 | if (list_len < 0) { | |
5411 | cFYI(1, ("EA entry goes beyond length of list")); | |
5412 | rc = -EIO; | |
5413 | goto QAllEAsOut; | |
5414 | } | |
5415 | ||
31c0519f JL |
5416 | if (ea_name) { |
5417 | if (strncmp(ea_name, temp_ptr, name_len) == 0) { | |
5418 | temp_ptr += name_len + 1; | |
5419 | rc = value_len; | |
5420 | if (buf_size == 0) | |
5421 | goto QAllEAsOut; | |
5422 | if ((size_t)value_len > buf_size) { | |
5423 | rc = -ERANGE; | |
5424 | goto QAllEAsOut; | |
5425 | } | |
5426 | memcpy(EAData, temp_ptr, value_len); | |
5427 | goto QAllEAsOut; | |
5428 | } | |
f0d3868b | 5429 | } else { |
31c0519f JL |
5430 | /* account for prefix user. and trailing null */ |
5431 | rc += (5 + 1 + name_len); | |
5432 | if (rc < (int) buf_size) { | |
5433 | memcpy(EAData, "user.", 5); | |
5434 | EAData += 5; | |
5435 | memcpy(EAData, temp_ptr, name_len); | |
5436 | EAData += name_len; | |
5437 | /* null terminate name */ | |
5438 | *EAData = 0; | |
5439 | ++EAData; | |
5440 | } else if (buf_size == 0) { | |
5441 | /* skip copy - calc size only */ | |
5442 | } else { | |
5443 | /* stop before overrun buffer */ | |
5444 | rc = -ERANGE; | |
5445 | break; | |
5446 | } | |
1da177e4 | 5447 | } |
0cd126b5 | 5448 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5449 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5450 | } |
f0d3868b | 5451 | |
31c0519f JL |
5452 | /* didn't find the named attribute */ |
5453 | if (ea_name) | |
5454 | rc = -ENODATA; | |
5455 | ||
f0d3868b | 5456 | QAllEAsOut: |
0d817bc0 | 5457 | cifs_buf_release(pSMB); |
1da177e4 LT |
5458 | if (rc == -EAGAIN) |
5459 | goto QAllEAsRetry; | |
5460 | ||
5461 | return (ssize_t)rc; | |
5462 | } | |
5463 | ||
1da177e4 LT |
5464 | int |
5465 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5466 | const char *ea_name, const void *ea_value, |
5467 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5468 | int remap) | |
1da177e4 LT |
5469 | { |
5470 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5471 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5472 | struct fealist *parm_data; | |
5473 | int name_len; | |
5474 | int rc = 0; | |
5475 | int bytes_returned = 0; | |
5476 | __u16 params, param_offset, byte_count, offset, count; | |
5477 | ||
5478 | cFYI(1, ("In SetEA")); | |
5479 | SetEARetry: | |
5480 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5481 | (void **) &pSMBr); | |
5482 | if (rc) | |
5483 | return rc; | |
5484 | ||
5485 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5486 | name_len = | |
50c2f753 | 5487 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5488 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5489 | name_len++; /* trailing null */ |
5490 | name_len *= 2; | |
50c2f753 | 5491 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5492 | name_len = strnlen(fileName, PATH_MAX); |
5493 | name_len++; /* trailing null */ | |
5494 | strncpy(pSMB->FileName, fileName, name_len); | |
5495 | } | |
5496 | ||
5497 | params = 6 + name_len; | |
5498 | ||
5499 | /* done calculating parms using name_len of file name, | |
5500 | now use name_len to calculate length of ea name | |
5501 | we are going to create in the inode xattrs */ | |
790fe579 | 5502 | if (ea_name == NULL) |
1da177e4 LT |
5503 | name_len = 0; |
5504 | else | |
50c2f753 | 5505 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5506 | |
dae5dbdb | 5507 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5508 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5509 | /* BB find max SMB PDU from sess */ |
5510 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5511 | pSMB->MaxSetupCount = 0; |
5512 | pSMB->Reserved = 0; | |
5513 | pSMB->Flags = 0; | |
5514 | pSMB->Timeout = 0; | |
5515 | pSMB->Reserved2 = 0; | |
5516 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5517 | InformationLevel) - 4; |
1da177e4 LT |
5518 | offset = param_offset + params; |
5519 | pSMB->InformationLevel = | |
5520 | cpu_to_le16(SMB_SET_FILE_EA); | |
5521 | ||
5522 | parm_data = | |
5523 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5524 | offset); | |
5525 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5526 | pSMB->DataOffset = cpu_to_le16(offset); | |
5527 | pSMB->SetupCount = 1; | |
5528 | pSMB->Reserved3 = 0; | |
5529 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5530 | byte_count = 3 /* pad */ + params + count; | |
5531 | pSMB->DataCount = cpu_to_le16(count); | |
5532 | parm_data->list_len = cpu_to_le32(count); | |
5533 | parm_data->list[0].EA_flags = 0; | |
5534 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5535 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5536 | /* EA names are always ASCII */ |
790fe579 | 5537 | if (ea_name) |
50c2f753 | 5538 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5539 | parm_data->list[0].name[name_len] = 0; |
5540 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5541 | /* caller ensures that ea_value_len is less than 64K but | |
5542 | we need to ensure that it fits within the smb */ | |
5543 | ||
50c2f753 SF |
5544 | /*BB add length check to see if it would fit in |
5545 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5546 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5547 | if (ea_value_len) | |
50c2f753 SF |
5548 | memcpy(parm_data->list[0].name+name_len+1, |
5549 | ea_value, ea_value_len); | |
1da177e4 LT |
5550 | |
5551 | pSMB->TotalDataCount = pSMB->DataCount; | |
5552 | pSMB->ParameterCount = cpu_to_le16(params); | |
5553 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5554 | pSMB->Reserved4 = 0; | |
5555 | pSMB->hdr.smb_buf_length += byte_count; | |
5556 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5557 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5558 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5559 | if (rc) |
1da177e4 | 5560 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); |
1da177e4 LT |
5561 | |
5562 | cifs_buf_release(pSMB); | |
5563 | ||
5564 | if (rc == -EAGAIN) | |
5565 | goto SetEARetry; | |
5566 | ||
5567 | return rc; | |
5568 | } | |
5569 | ||
5570 | #endif |