Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include "cifspdu.h" | |
38 | #include "cifsglob.h" | |
d0d66c44 | 39 | #include "cifsacl.h" |
1da177e4 LT |
40 | #include "cifsproto.h" |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | ||
44 | #ifdef CONFIG_CIFS_POSIX | |
45 | static struct { | |
46 | int index; | |
47 | char *name; | |
48 | } protocols[] = { | |
3979877e SF |
49 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 51 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 52 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 53 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 54 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
55 | {BAD_PROT, "\2"} |
56 | }; | |
57 | #else | |
58 | static struct { | |
59 | int index; | |
60 | char *name; | |
61 | } protocols[] = { | |
3979877e SF |
62 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
63 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 64 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 65 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 66 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
67 | {BAD_PROT, "\2"} |
68 | }; | |
69 | #endif | |
70 | ||
3979877e SF |
71 | /* define the number of elements in the cifs dialect array */ |
72 | #ifdef CONFIG_CIFS_POSIX | |
73 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 74 | #define CIFS_NUM_PROT 4 |
3979877e SF |
75 | #else |
76 | #define CIFS_NUM_PROT 2 | |
77 | #endif /* CIFS_WEAK_PW_HASH */ | |
78 | #else /* not posix */ | |
79 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 80 | #define CIFS_NUM_PROT 3 |
3979877e SF |
81 | #else |
82 | #define CIFS_NUM_PROT 1 | |
83 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
84 | #endif /* CIFS_POSIX */ | |
85 | ||
1da177e4 LT |
86 | /* Mark as invalid, all open files on tree connections since they |
87 | were closed when session to server was lost */ | |
96daf2b0 | 88 | static void mark_open_files_invalid(struct cifs_tcon *pTcon) |
1da177e4 LT |
89 | { |
90 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
91 | struct list_head *tmp; |
92 | struct list_head *tmp1; | |
1da177e4 LT |
93 | |
94 | /* list all files open on tree connection and mark them invalid */ | |
4477288a | 95 | spin_lock(&cifs_file_list_lock); |
1da177e4 | 96 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
790fe579 | 97 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 98 | open_file->invalidHandle = true; |
3bc303c2 | 99 | open_file->oplock_break_cancelled = true; |
1da177e4 | 100 | } |
4477288a | 101 | spin_unlock(&cifs_file_list_lock); |
09d1db5c SF |
102 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
103 | to this tcon */ | |
1da177e4 LT |
104 | } |
105 | ||
9162ab20 JL |
106 | /* reconnect the socket, tcon, and smb session if needed */ |
107 | static int | |
96daf2b0 | 108 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 109 | { |
c4a5534a | 110 | int rc; |
96daf2b0 | 111 | struct cifs_ses *ses; |
9162ab20 JL |
112 | struct TCP_Server_Info *server; |
113 | struct nls_table *nls_codepage; | |
114 | ||
115 | /* | |
116 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
117 | * tcp and smb session status done differently for those three - in the | |
118 | * calling routine | |
119 | */ | |
120 | if (!tcon) | |
121 | return 0; | |
122 | ||
123 | ses = tcon->ses; | |
124 | server = ses->server; | |
125 | ||
126 | /* | |
127 | * only tree disconnect, open, and write, (and ulogoff which does not | |
128 | * have tcon) are allowed as we start force umount | |
129 | */ | |
130 | if (tcon->tidStatus == CifsExiting) { | |
131 | if (smb_command != SMB_COM_WRITE_ANDX && | |
132 | smb_command != SMB_COM_OPEN_ANDX && | |
133 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
134 | cFYI(1, "can not send cmd %d while umounting", |
135 | smb_command); | |
9162ab20 JL |
136 | return -ENODEV; |
137 | } | |
138 | } | |
139 | ||
9162ab20 JL |
140 | /* |
141 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
142 | * greater than cifs socket timeout which is 7 seconds | |
143 | */ | |
144 | while (server->tcpStatus == CifsNeedReconnect) { | |
145 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 146 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 147 | |
fd88ce93 | 148 | /* are we still trying to reconnect? */ |
9162ab20 JL |
149 | if (server->tcpStatus != CifsNeedReconnect) |
150 | break; | |
151 | ||
152 | /* | |
153 | * on "soft" mounts we wait once. Hard mounts keep | |
154 | * retrying until process is killed or server comes | |
155 | * back on-line | |
156 | */ | |
d402539b | 157 | if (!tcon->retry) { |
b6b38f70 | 158 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
159 | return -EHOSTDOWN; |
160 | } | |
161 | } | |
162 | ||
163 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
164 | return 0; | |
165 | ||
166 | nls_codepage = load_nls_default(); | |
167 | ||
168 | /* | |
169 | * need to prevent multiple threads trying to simultaneously | |
170 | * reconnect the same SMB session | |
171 | */ | |
d7b619cf | 172 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
173 | rc = cifs_negotiate_protocol(0, ses); |
174 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
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); |
b6b38f70 | 186 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
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 | 229 | static int |
96daf2b0 | 230 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 231 | void **request_buf) |
1da177e4 | 232 | { |
f569599a | 233 | int rc; |
1da177e4 | 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 | |
f569599a | 251 | return 0; |
5815449d SF |
252 | } |
253 | ||
12b3b8ff | 254 | int |
50c2f753 | 255 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 256 | struct cifs_ses *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 | |
96daf2b0 | 282 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 283 | void **request_buf, void **response_buf) |
1da177e4 | 284 | { |
1da177e4 LT |
285 | *request_buf = cifs_buf_get(); |
286 | if (*request_buf == NULL) { | |
287 | /* BB should we add a retry in here if not a writepage? */ | |
288 | return -ENOMEM; | |
289 | } | |
290 | /* Although the original thought was we needed the response buf for */ | |
291 | /* potential retries of smb operations it turns out we can determine */ | |
292 | /* from the mid flags when the request buffer can be resent without */ | |
293 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 294 | if (response_buf) |
50c2f753 | 295 | *response_buf = *request_buf; |
1da177e4 LT |
296 | |
297 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 298 | wct); |
1da177e4 | 299 | |
790fe579 SF |
300 | if (tcon != NULL) |
301 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 302 | |
f569599a JL |
303 | return 0; |
304 | } | |
305 | ||
306 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
307 | static int | |
96daf2b0 | 308 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
309 | void **request_buf, void **response_buf) |
310 | { | |
311 | int rc; | |
312 | ||
313 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
314 | if (rc) | |
315 | return rc; | |
316 | ||
317 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
318 | } | |
319 | ||
320 | static int | |
96daf2b0 | 321 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
322 | void **request_buf, void **response_buf) |
323 | { | |
324 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
325 | return -EHOSTDOWN; | |
326 | ||
327 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
328 | } |
329 | ||
50c2f753 | 330 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 331 | { |
12df83c9 JL |
332 | unsigned int total_size; |
333 | ||
334 | /* check for plausible wct */ | |
335 | if (pSMB->hdr.WordCount < 10) | |
336 | goto vt2_err; | |
1da177e4 | 337 | |
1da177e4 | 338 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
339 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
340 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
341 | goto vt2_err; | |
342 | ||
12df83c9 JL |
343 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
344 | if (total_size >= 512) | |
345 | goto vt2_err; | |
346 | ||
fd5707e1 JL |
347 | /* check that bcc is at least as big as parms + data, and that it is |
348 | * less than negotiated smb buffer | |
349 | */ | |
12df83c9 JL |
350 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
351 | if (total_size > get_bcc(&pSMB->hdr) || | |
352 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
353 | goto vt2_err; | |
354 | ||
355 | return 0; | |
356 | vt2_err: | |
50c2f753 | 357 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 358 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 359 | return -EINVAL; |
1da177e4 | 360 | } |
690c522f | 361 | |
be8e3b00 SF |
362 | static inline void inc_rfc1001_len(void *pSMB, int count) |
363 | { | |
364 | struct smb_hdr *hdr = (struct smb_hdr *)pSMB; | |
365 | ||
366 | be32_add_cpu(&hdr->smb_buf_length, count); | |
367 | } | |
368 | ||
1da177e4 | 369 | int |
96daf2b0 | 370 | CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
371 | { |
372 | NEGOTIATE_REQ *pSMB; | |
373 | NEGOTIATE_RSP *pSMBr; | |
374 | int rc = 0; | |
375 | int bytes_returned; | |
3979877e | 376 | int i; |
50c2f753 | 377 | struct TCP_Server_Info *server; |
1da177e4 | 378 | u16 count; |
750d1151 | 379 | unsigned int secFlags; |
1da177e4 | 380 | |
790fe579 | 381 | if (ses->server) |
1da177e4 LT |
382 | server = ses->server; |
383 | else { | |
384 | rc = -EIO; | |
385 | return rc; | |
386 | } | |
387 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
388 | (void **) &pSMB, (void **) &pSMBr); | |
389 | if (rc) | |
390 | return rc; | |
750d1151 SF |
391 | |
392 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 393 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 394 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 395 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 396 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 397 | |
b6b38f70 | 398 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 399 | |
1982c344 | 400 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 401 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 402 | |
100c1ddc | 403 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 404 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 405 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 406 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 407 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 408 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
409 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
410 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 411 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
412 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
413 | } | |
50c2f753 | 414 | |
3979877e | 415 | count = 0; |
50c2f753 | 416 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
417 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
418 | count += strlen(protocols[i].name) + 1; | |
419 | /* null at end of source and target buffers anyway */ | |
420 | } | |
be8e3b00 | 421 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
422 | pSMB->ByteCount = cpu_to_le16(count); |
423 | ||
424 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
425 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 426 | if (rc != 0) |
254e55ed SF |
427 | goto neg_err_exit; |
428 | ||
9bf67e51 JL |
429 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
430 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 431 | /* Check wct = 1 error case */ |
9bf67e51 | 432 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 433 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 434 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
435 | could not negotiate a common dialect */ |
436 | rc = -EOPNOTSUPP; | |
437 | goto neg_err_exit; | |
50c2f753 | 438 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 439 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
440 | && ((server->dialect == LANMAN_PROT) |
441 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 442 | __s16 tmp; |
50c2f753 | 443 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 444 | |
790fe579 | 445 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 446 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
447 | server->secType = LANMAN; |
448 | else { | |
b6b38f70 JP |
449 | cERROR(1, "mount failed weak security disabled" |
450 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
451 | rc = -EOPNOTSUPP; |
452 | goto neg_err_exit; | |
50c2f753 | 453 | } |
96daf2b0 | 454 | server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode); |
254e55ed SF |
455 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); |
456 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 457 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 458 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
459 | /* even though we do not use raw we might as well set this |
460 | accurately, in case we ever find a need for it */ | |
790fe579 | 461 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 462 | server->max_rw = 0xFF00; |
254e55ed SF |
463 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
464 | } else { | |
eca6acf9 | 465 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
466 | server->capabilities = CAP_MPX_MODE; |
467 | } | |
b815f1e5 | 468 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 469 | if (tmp == -1) { |
25ee4a98 SF |
470 | /* OS/2 often does not set timezone therefore |
471 | * we must use server time to calc time zone. | |
b815f1e5 SF |
472 | * Could deviate slightly from the right zone. |
473 | * Smallest defined timezone difference is 15 minutes | |
474 | * (i.e. Nepal). Rounding up/down is done to match | |
475 | * this requirement. | |
25ee4a98 | 476 | */ |
b815f1e5 | 477 | int val, seconds, remain, result; |
25ee4a98 SF |
478 | struct timespec ts, utc; |
479 | utc = CURRENT_TIME; | |
c4a2c08d JL |
480 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
481 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 482 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 483 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 484 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 485 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 486 | seconds = abs(val); |
947a5067 | 487 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 488 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 489 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 490 | result += MIN_TZ_ADJ; |
790fe579 | 491 | if (val < 0) |
ad7a2926 | 492 | result = -result; |
b815f1e5 | 493 | server->timeAdj = result; |
25ee4a98 | 494 | } else { |
b815f1e5 SF |
495 | server->timeAdj = (int)tmp; |
496 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 497 | } |
b6b38f70 | 498 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 499 | |
3979877e | 500 | |
254e55ed | 501 | /* BB get server time for time conversions and add |
50c2f753 | 502 | code to use it and timezone since this is not UTC */ |
3979877e | 503 | |
50c2f753 | 504 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 505 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 506 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 507 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 508 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
509 | rc = -EIO; /* need cryptkey unless plain text */ |
510 | goto neg_err_exit; | |
511 | } | |
3979877e | 512 | |
f19159dc | 513 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
514 | /* we will not end up setting signing flags - as no signing |
515 | was in LANMAN and server did not return the flags on */ | |
516 | goto signing_check; | |
7c7b25bc | 517 | #else /* weak security disabled */ |
790fe579 | 518 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
519 | cERROR(1, "mount failed, cifs module not built " |
520 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 521 | rc = -EOPNOTSUPP; |
7c7b25bc | 522 | #endif /* WEAK_PW_HASH */ |
254e55ed | 523 | goto neg_err_exit; |
790fe579 | 524 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
525 | /* unknown wct */ |
526 | rc = -EOPNOTSUPP; | |
527 | goto neg_err_exit; | |
528 | } | |
529 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
530 | server->sec_mode = pSMBr->SecurityMode; |
531 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 532 | cFYI(1, "share mode security"); |
bdc4bf6e | 533 | |
96daf2b0 | 534 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 535 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 536 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 537 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
538 | cERROR(1, "Server requests plain text password" |
539 | " but client support disabled"); | |
9312f675 | 540 | |
790fe579 | 541 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 542 | server->secType = NTLMv2; |
790fe579 | 543 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 544 | server->secType = NTLM; |
790fe579 | 545 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 546 | server->secType = NTLMv2; |
a013689d SF |
547 | else if (secFlags & CIFSSEC_MAY_KRB5) |
548 | server->secType = Kerberos; | |
ac683924 | 549 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 550 | server->secType = RawNTLMSSP; |
a013689d SF |
551 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
552 | server->secType = LANMAN; | |
a013689d SF |
553 | else { |
554 | rc = -EOPNOTSUPP; | |
b6b38f70 | 555 | cERROR(1, "Invalid security type"); |
a013689d SF |
556 | goto neg_err_exit; |
557 | } | |
558 | /* else ... any others ...? */ | |
254e55ed SF |
559 | |
560 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
561 | little endian */ | |
562 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
563 | /* probably no need to store and check maxvcs */ | |
564 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 565 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 566 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 567 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 568 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
569 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
570 | server->timeAdj *= 60; | |
254e55ed | 571 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 572 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 573 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
574 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
575 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
576 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 577 | /* decode security blob */ |
820a803f | 578 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 579 | if (count < 16) { |
254e55ed | 580 | rc = -EIO; |
e187e44e JL |
581 | goto neg_err_exit; |
582 | } | |
3f9bcca7 | 583 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 584 | if (server->srv_count > 1) { |
3f9bcca7 | 585 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
586 | if (memcmp(server->server_GUID, |
587 | pSMBr->u.extended_response. | |
588 | GUID, 16) != 0) { | |
b6b38f70 | 589 | cFYI(1, "server UID changed"); |
254e55ed | 590 | memcpy(server->server_GUID, |
e187e44e JL |
591 | pSMBr->u.extended_response.GUID, |
592 | 16); | |
593 | } | |
e7ddee90 | 594 | } else { |
3f9bcca7 | 595 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
596 | memcpy(server->server_GUID, |
597 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 598 | } |
e187e44e JL |
599 | |
600 | if (count == 16) { | |
601 | server->secType = RawNTLMSSP; | |
254e55ed SF |
602 | } else { |
603 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
604 | SecurityBlob, count - 16, |
605 | server); | |
ef571cad | 606 | if (rc == 1) |
e545937a | 607 | rc = 0; |
ef571cad | 608 | else |
254e55ed | 609 | rc = -EINVAL; |
2b149f11 SP |
610 | if (server->secType == Kerberos) { |
611 | if (!server->sec_kerberos && | |
612 | !server->sec_mskerberos) | |
613 | rc = -EOPNOTSUPP; | |
614 | } else if (server->secType == RawNTLMSSP) { | |
615 | if (!server->sec_ntlmssp) | |
616 | rc = -EOPNOTSUPP; | |
617 | } else | |
618 | rc = -EOPNOTSUPP; | |
1da177e4 | 619 | } |
96daf2b0 | 620 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
621 | rc = -EIO; /* no crypt key only if plain text pwd */ |
622 | goto neg_err_exit; | |
254e55ed SF |
623 | } else |
624 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
625 | ||
6344a423 | 626 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 627 | signing_check: |
6344a423 | 628 | #endif |
762e5ab7 SF |
629 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
630 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
631 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 632 | cFYI(1, "Signing disabled"); |
96daf2b0 | 633 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 634 | cERROR(1, "Server requires " |
7111d214 | 635 | "packet signing to be enabled in " |
b6b38f70 | 636 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
637 | rc = -EOPNOTSUPP; |
638 | } | |
96daf2b0 | 639 | server->sec_mode &= |
254e55ed | 640 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
641 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
642 | /* signing required */ | |
b6b38f70 | 643 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 644 | if ((server->sec_mode & |
762e5ab7 | 645 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 646 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 647 | rc = -EOPNOTSUPP; |
762e5ab7 | 648 | } else |
96daf2b0 | 649 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
650 | } else { |
651 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
652 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
653 | server->sec_mode &= | |
254e55ed | 654 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 655 | } |
50c2f753 SF |
656 | |
657 | neg_err_exit: | |
4a6d87f1 | 658 | cifs_buf_release(pSMB); |
254e55ed | 659 | |
b6b38f70 | 660 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
661 | return rc; |
662 | } | |
663 | ||
664 | int | |
96daf2b0 | 665 | CIFSSMBTDis(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
666 | { |
667 | struct smb_hdr *smb_buffer; | |
1da177e4 | 668 | int rc = 0; |
1da177e4 | 669 | |
b6b38f70 | 670 | cFYI(1, "In tree disconnect"); |
1da177e4 | 671 | |
f1987b44 JL |
672 | /* BB: do we need to check this? These should never be NULL. */ |
673 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
674 | return -EIO; | |
1da177e4 | 675 | |
f1987b44 JL |
676 | /* |
677 | * No need to return error on this operation if tid invalidated and | |
678 | * closed on server already e.g. due to tcp session crashing. Also, | |
679 | * the tcon is no longer on the list, so no need to take lock before | |
680 | * checking this. | |
681 | */ | |
268875b9 | 682 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 683 | return 0; |
1da177e4 | 684 | |
50c2f753 | 685 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 686 | (void **)&smb_buffer); |
f1987b44 | 687 | if (rc) |
1da177e4 | 688 | return rc; |
133672ef SF |
689 | |
690 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 691 | if (rc) |
b6b38f70 | 692 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 693 | |
50c2f753 | 694 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 695 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
696 | if (rc == -EAGAIN) |
697 | rc = 0; | |
698 | ||
699 | return rc; | |
700 | } | |
701 | ||
766fdbb5 JL |
702 | /* |
703 | * This is a no-op for now. We're not really interested in the reply, but | |
704 | * rather in the fact that the server sent one and that server->lstrp | |
705 | * gets updated. | |
706 | * | |
707 | * FIXME: maybe we should consider checking that the reply matches request? | |
708 | */ | |
709 | static void | |
710 | cifs_echo_callback(struct mid_q_entry *mid) | |
711 | { | |
712 | struct TCP_Server_Info *server = mid->callback_data; | |
713 | ||
714 | DeleteMidQEntry(mid); | |
715 | atomic_dec(&server->inFlight); | |
716 | wake_up(&server->request_q); | |
717 | } | |
718 | ||
719 | int | |
720 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
721 | { | |
722 | ECHO_REQ *smb; | |
723 | int rc = 0; | |
fcc31cb6 | 724 | struct kvec iov; |
766fdbb5 JL |
725 | |
726 | cFYI(1, "In echo request"); | |
727 | ||
728 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
729 | if (rc) | |
730 | return rc; | |
731 | ||
732 | /* set up echo request */ | |
5443d130 | 733 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
734 | smb->hdr.WordCount = 1; |
735 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 736 | put_bcc(1, &smb->hdr); |
766fdbb5 | 737 | smb->Data[0] = 'a'; |
be8e3b00 | 738 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
739 | iov.iov_base = smb; |
740 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 741 | |
59ffd841 | 742 | rc = cifs_call_async(server, &iov, 1, cifs_echo_callback, server, true); |
766fdbb5 JL |
743 | if (rc) |
744 | cFYI(1, "Echo request failed: %d", rc); | |
745 | ||
746 | cifs_small_buf_release(smb); | |
747 | ||
748 | return rc; | |
749 | } | |
750 | ||
1da177e4 | 751 | int |
96daf2b0 | 752 | CIFSSMBLogoff(const int xid, struct cifs_ses *ses) |
1da177e4 | 753 | { |
1da177e4 LT |
754 | LOGOFF_ANDX_REQ *pSMB; |
755 | int rc = 0; | |
1da177e4 | 756 | |
b6b38f70 | 757 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 758 | |
14fbf50d JL |
759 | /* |
760 | * BB: do we need to check validity of ses and server? They should | |
761 | * always be valid since we have an active reference. If not, that | |
762 | * should probably be a BUG() | |
763 | */ | |
764 | if (!ses || !ses->server) | |
3b795210 SF |
765 | return -EIO; |
766 | ||
d7b619cf | 767 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
768 | if (ses->need_reconnect) |
769 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
770 | already closed due to reconnect */ | |
1da177e4 LT |
771 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
772 | if (rc) { | |
d7b619cf | 773 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
774 | return rc; |
775 | } | |
776 | ||
3b795210 | 777 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 778 | |
96daf2b0 | 779 | if (ses->server->sec_mode & |
1da177e4 LT |
780 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
781 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
782 | |
783 | pSMB->hdr.Uid = ses->Suid; | |
784 | ||
785 | pSMB->AndXCommand = 0xFF; | |
133672ef | 786 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 787 | session_already_dead: |
d7b619cf | 788 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
789 | |
790 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 791 | since server closed smb session, no sense reporting |
1da177e4 LT |
792 | error */ |
793 | if (rc == -EAGAIN) | |
794 | rc = 0; | |
795 | return rc; | |
796 | } | |
797 | ||
2d785a50 | 798 | int |
96daf2b0 | 799 | CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
2d785a50 SF |
800 | __u16 type, const struct nls_table *nls_codepage, int remap) |
801 | { | |
802 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
803 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
804 | struct unlink_psx_rq *pRqD; | |
805 | int name_len; | |
806 | int rc = 0; | |
807 | int bytes_returned = 0; | |
808 | __u16 params, param_offset, offset, byte_count; | |
809 | ||
b6b38f70 | 810 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
811 | PsxDelete: |
812 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
813 | (void **) &pSMBr); | |
814 | if (rc) | |
815 | return rc; | |
816 | ||
817 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
818 | name_len = | |
819 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
820 | PATH_MAX, nls_codepage, remap); | |
821 | name_len++; /* trailing null */ | |
822 | name_len *= 2; | |
823 | } else { /* BB add path length overrun check */ | |
824 | name_len = strnlen(fileName, PATH_MAX); | |
825 | name_len++; /* trailing null */ | |
826 | strncpy(pSMB->FileName, fileName, name_len); | |
827 | } | |
828 | ||
829 | params = 6 + name_len; | |
830 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
831 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
832 | pSMB->MaxSetupCount = 0; | |
833 | pSMB->Reserved = 0; | |
834 | pSMB->Flags = 0; | |
835 | pSMB->Timeout = 0; | |
836 | pSMB->Reserved2 = 0; | |
837 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
838 | InformationLevel) - 4; | |
839 | offset = param_offset + params; | |
840 | ||
841 | /* Setup pointer to Request Data (inode type) */ | |
842 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
843 | pRqD->type = cpu_to_le16(type); | |
844 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
845 | pSMB->DataOffset = cpu_to_le16(offset); | |
846 | pSMB->SetupCount = 1; | |
847 | pSMB->Reserved3 = 0; | |
848 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
849 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
850 | ||
851 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
852 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
853 | pSMB->ParameterCount = cpu_to_le16(params); | |
854 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
855 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
856 | pSMB->Reserved4 = 0; | |
be8e3b00 | 857 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
858 | pSMB->ByteCount = cpu_to_le16(byte_count); |
859 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
860 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 861 | if (rc) |
b6b38f70 | 862 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
863 | cifs_buf_release(pSMB); |
864 | ||
865 | cifs_stats_inc(&tcon->num_deletes); | |
866 | ||
867 | if (rc == -EAGAIN) | |
868 | goto PsxDelete; | |
869 | ||
870 | return rc; | |
871 | } | |
872 | ||
1da177e4 | 873 | int |
96daf2b0 | 874 | CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
737b758c | 875 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
876 | { |
877 | DELETE_FILE_REQ *pSMB = NULL; | |
878 | DELETE_FILE_RSP *pSMBr = NULL; | |
879 | int rc = 0; | |
880 | int bytes_returned; | |
881 | int name_len; | |
882 | ||
883 | DelFileRetry: | |
884 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
885 | (void **) &pSMBr); | |
886 | if (rc) | |
887 | return rc; | |
888 | ||
889 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
890 | name_len = | |
50c2f753 | 891 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 892 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
893 | name_len++; /* trailing null */ |
894 | name_len *= 2; | |
09d1db5c | 895 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
896 | name_len = strnlen(fileName, PATH_MAX); |
897 | name_len++; /* trailing null */ | |
898 | strncpy(pSMB->fileName, fileName, name_len); | |
899 | } | |
900 | pSMB->SearchAttributes = | |
901 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
902 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 903 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
904 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
905 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
906 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 907 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 908 | if (rc) |
b6b38f70 | 909 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
910 | |
911 | cifs_buf_release(pSMB); | |
912 | if (rc == -EAGAIN) | |
913 | goto DelFileRetry; | |
914 | ||
915 | return rc; | |
916 | } | |
917 | ||
918 | int | |
96daf2b0 | 919 | CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName, |
737b758c | 920 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
921 | { |
922 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
923 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
924 | int rc = 0; | |
925 | int bytes_returned; | |
926 | int name_len; | |
927 | ||
b6b38f70 | 928 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
929 | RmDirRetry: |
930 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
931 | (void **) &pSMBr); | |
932 | if (rc) | |
933 | return rc; | |
934 | ||
935 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
936 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
937 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
938 | name_len++; /* trailing null */ |
939 | name_len *= 2; | |
09d1db5c | 940 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
941 | name_len = strnlen(dirName, PATH_MAX); |
942 | name_len++; /* trailing null */ | |
943 | strncpy(pSMB->DirName, dirName, name_len); | |
944 | } | |
945 | ||
946 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 947 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
948 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
949 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
950 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 951 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 952 | if (rc) |
b6b38f70 | 953 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
954 | |
955 | cifs_buf_release(pSMB); | |
956 | if (rc == -EAGAIN) | |
957 | goto RmDirRetry; | |
958 | return rc; | |
959 | } | |
960 | ||
961 | int | |
96daf2b0 | 962 | CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon, |
737b758c | 963 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
964 | { |
965 | int rc = 0; | |
966 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
967 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
968 | int bytes_returned; | |
969 | int name_len; | |
970 | ||
b6b38f70 | 971 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
972 | MkDirRetry: |
973 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
974 | (void **) &pSMBr); | |
975 | if (rc) | |
976 | return rc; | |
977 | ||
978 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 979 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 980 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
981 | name_len++; /* trailing null */ |
982 | name_len *= 2; | |
09d1db5c | 983 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
984 | name_len = strnlen(name, PATH_MAX); |
985 | name_len++; /* trailing null */ | |
986 | strncpy(pSMB->DirName, name, name_len); | |
987 | } | |
988 | ||
989 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 990 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
991 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
992 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
993 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 994 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 995 | if (rc) |
b6b38f70 | 996 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 997 | |
1da177e4 LT |
998 | cifs_buf_release(pSMB); |
999 | if (rc == -EAGAIN) | |
1000 | goto MkDirRetry; | |
1001 | return rc; | |
1002 | } | |
1003 | ||
2dd29d31 | 1004 | int |
96daf2b0 | 1005 | CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags, |
ad7a2926 | 1006 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1007 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1008 | const struct nls_table *nls_codepage, int remap) |
1009 | { | |
1010 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1011 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1012 | int name_len; | |
1013 | int rc = 0; | |
1014 | int bytes_returned = 0; | |
2dd29d31 | 1015 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1016 | OPEN_PSX_REQ *pdata; |
1017 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1018 | |
b6b38f70 | 1019 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1020 | PsxCreat: |
1021 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1022 | (void **) &pSMBr); | |
1023 | if (rc) | |
1024 | return rc; | |
1025 | ||
1026 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1027 | name_len = | |
1028 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1029 | PATH_MAX, nls_codepage, remap); | |
1030 | name_len++; /* trailing null */ | |
1031 | name_len *= 2; | |
1032 | } else { /* BB improve the check for buffer overruns BB */ | |
1033 | name_len = strnlen(name, PATH_MAX); | |
1034 | name_len++; /* trailing null */ | |
1035 | strncpy(pSMB->FileName, name, name_len); | |
1036 | } | |
1037 | ||
1038 | params = 6 + name_len; | |
1039 | count = sizeof(OPEN_PSX_REQ); | |
1040 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1041 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1042 | pSMB->MaxSetupCount = 0; | |
1043 | pSMB->Reserved = 0; | |
1044 | pSMB->Flags = 0; | |
1045 | pSMB->Timeout = 0; | |
1046 | pSMB->Reserved2 = 0; | |
1047 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1048 | InformationLevel) - 4; |
2dd29d31 | 1049 | offset = param_offset + params; |
2dd29d31 | 1050 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1051 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1052 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1053 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1054 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1055 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1056 | pSMB->DataOffset = cpu_to_le16(offset); | |
1057 | pSMB->SetupCount = 1; | |
1058 | pSMB->Reserved3 = 0; | |
1059 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1060 | byte_count = 3 /* pad */ + params + count; | |
1061 | ||
1062 | pSMB->DataCount = cpu_to_le16(count); | |
1063 | pSMB->ParameterCount = cpu_to_le16(params); | |
1064 | pSMB->TotalDataCount = pSMB->DataCount; | |
1065 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1066 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1067 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1068 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1069 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1070 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1071 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1072 | if (rc) { | |
b6b38f70 | 1073 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1074 | goto psx_create_err; |
1075 | } | |
1076 | ||
b6b38f70 | 1077 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1078 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1079 | ||
820a803f | 1080 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1081 | rc = -EIO; /* bad smb */ |
1082 | goto psx_create_err; | |
1083 | } | |
1084 | ||
1085 | /* copy return information to pRetData */ | |
50c2f753 | 1086 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1087 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1088 | |
2dd29d31 | 1089 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1090 | if (netfid) |
2dd29d31 SF |
1091 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1092 | /* Let caller know file was created so we can set the mode. */ | |
1093 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1094 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1095 | *pOplock |= CIFS_CREATE_ACTION; |
1096 | /* check to make sure response data is there */ | |
8f2376ad CG |
1097 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1098 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1099 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1100 | } else { |
820a803f | 1101 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1102 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1103 | cERROR(1, "Open response data too small"); |
8f2376ad | 1104 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1105 | goto psx_create_err; |
1106 | } | |
50c2f753 | 1107 | memcpy((char *) pRetData, |
cbac3cba | 1108 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1109 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1110 | } |
2dd29d31 SF |
1111 | |
1112 | psx_create_err: | |
1113 | cifs_buf_release(pSMB); | |
1114 | ||
65bc98b0 SF |
1115 | if (posix_flags & SMB_O_DIRECTORY) |
1116 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1117 | else | |
1118 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1119 | |
1120 | if (rc == -EAGAIN) | |
1121 | goto PsxCreat; | |
1122 | ||
50c2f753 | 1123 | return rc; |
2dd29d31 SF |
1124 | } |
1125 | ||
a9d02ad4 SF |
1126 | static __u16 convert_disposition(int disposition) |
1127 | { | |
1128 | __u16 ofun = 0; | |
1129 | ||
1130 | switch (disposition) { | |
1131 | case FILE_SUPERSEDE: | |
1132 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1133 | break; | |
1134 | case FILE_OPEN: | |
1135 | ofun = SMBOPEN_OAPPEND; | |
1136 | break; | |
1137 | case FILE_CREATE: | |
1138 | ofun = SMBOPEN_OCREATE; | |
1139 | break; | |
1140 | case FILE_OPEN_IF: | |
1141 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1142 | break; | |
1143 | case FILE_OVERWRITE: | |
1144 | ofun = SMBOPEN_OTRUNC; | |
1145 | break; | |
1146 | case FILE_OVERWRITE_IF: | |
1147 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1148 | break; | |
1149 | default: | |
b6b38f70 | 1150 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1151 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1152 | } | |
1153 | return ofun; | |
1154 | } | |
1155 | ||
35fc37d5 JL |
1156 | static int |
1157 | access_flags_to_smbopen_mode(const int access_flags) | |
1158 | { | |
1159 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1160 | ||
1161 | if (masked_flags == GENERIC_READ) | |
1162 | return SMBOPEN_READ; | |
1163 | else if (masked_flags == GENERIC_WRITE) | |
1164 | return SMBOPEN_WRITE; | |
1165 | ||
1166 | /* just go for read/write */ | |
1167 | return SMBOPEN_READWRITE; | |
1168 | } | |
1169 | ||
a9d02ad4 | 1170 | int |
96daf2b0 | 1171 | SMBLegacyOpen(const int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1172 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1173 | const int access_flags, const int create_options, __u16 *netfid, |
1174 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1175 | const struct nls_table *nls_codepage, int remap) |
1176 | { | |
1177 | int rc = -EACCES; | |
1178 | OPENX_REQ *pSMB = NULL; | |
1179 | OPENX_RSP *pSMBr = NULL; | |
1180 | int bytes_returned; | |
1181 | int name_len; | |
1182 | __u16 count; | |
1183 | ||
1184 | OldOpenRetry: | |
1185 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1186 | (void **) &pSMBr); | |
1187 | if (rc) | |
1188 | return rc; | |
1189 | ||
1190 | pSMB->AndXCommand = 0xFF; /* none */ | |
1191 | ||
1192 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1193 | count = 1; /* account for one byte pad to word boundary */ | |
1194 | name_len = | |
1195 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1196 | fileName, PATH_MAX, nls_codepage, remap); | |
1197 | name_len++; /* trailing null */ | |
1198 | name_len *= 2; | |
1199 | } else { /* BB improve check for buffer overruns BB */ | |
1200 | count = 0; /* no pad */ | |
1201 | name_len = strnlen(fileName, PATH_MAX); | |
1202 | name_len++; /* trailing null */ | |
1203 | strncpy(pSMB->fileName, fileName, name_len); | |
1204 | } | |
1205 | if (*pOplock & REQ_OPLOCK) | |
1206 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1207 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1208 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1209 | |
a9d02ad4 | 1210 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1211 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1212 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1213 | /* set file as system file if special file such | |
1214 | as fifo and server expecting SFU style and | |
1215 | no Unix extensions */ | |
1216 | ||
790fe579 SF |
1217 | if (create_options & CREATE_OPTION_SPECIAL) |
1218 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1219 | else /* BB FIXME BB */ |
1220 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1221 | |
67750fb9 JL |
1222 | if (create_options & CREATE_OPTION_READONLY) |
1223 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1224 | |
1225 | /* BB FIXME BB */ | |
50c2f753 SF |
1226 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1227 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1228 | /* BB FIXME END BB */ |
3e87d803 SF |
1229 | |
1230 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1231 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1232 | count += name_len; |
be8e3b00 | 1233 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1234 | |
1235 | pSMB->ByteCount = cpu_to_le16(count); | |
1236 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1237 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1238 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1239 | cifs_stats_inc(&tcon->num_opens); |
1240 | if (rc) { | |
b6b38f70 | 1241 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1242 | } else { |
1243 | /* BB verify if wct == 15 */ | |
1244 | ||
582d21e5 | 1245 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1246 | |
1247 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1248 | /* Let caller know file was created so we can set the mode. */ | |
1249 | /* Do we care about the CreateAction in any other cases? */ | |
1250 | /* BB FIXME BB */ | |
790fe579 | 1251 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1252 | *pOplock |= CIFS_CREATE_ACTION; */ |
1253 | /* BB FIXME END */ | |
1254 | ||
790fe579 | 1255 | if (pfile_info) { |
a9d02ad4 SF |
1256 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1257 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1258 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1259 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1260 | pfile_info->Attributes = |
50c2f753 | 1261 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1262 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1263 | pfile_info->AllocationSize = |
1264 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1265 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1266 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1267 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1268 | } |
1269 | } | |
1270 | ||
1271 | cifs_buf_release(pSMB); | |
1272 | if (rc == -EAGAIN) | |
1273 | goto OldOpenRetry; | |
1274 | return rc; | |
1275 | } | |
1276 | ||
1da177e4 | 1277 | int |
96daf2b0 | 1278 | CIFSSMBOpen(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 1279 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1280 | const int access_flags, const int create_options, __u16 *netfid, |
1281 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1282 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1283 | { |
1284 | int rc = -EACCES; | |
1285 | OPEN_REQ *pSMB = NULL; | |
1286 | OPEN_RSP *pSMBr = NULL; | |
1287 | int bytes_returned; | |
1288 | int name_len; | |
1289 | __u16 count; | |
1290 | ||
1291 | openRetry: | |
1292 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1293 | (void **) &pSMBr); | |
1294 | if (rc) | |
1295 | return rc; | |
1296 | ||
1297 | pSMB->AndXCommand = 0xFF; /* none */ | |
1298 | ||
1299 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1300 | count = 1; /* account for one byte pad to word boundary */ | |
1301 | name_len = | |
b1a45695 | 1302 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1303 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1304 | name_len++; /* trailing null */ |
1305 | name_len *= 2; | |
1306 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1307 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1308 | count = 0; /* no pad */ |
1309 | name_len = strnlen(fileName, PATH_MAX); | |
1310 | name_len++; /* trailing null */ | |
1311 | pSMB->NameLength = cpu_to_le16(name_len); | |
1312 | strncpy(pSMB->fileName, fileName, name_len); | |
1313 | } | |
1314 | if (*pOplock & REQ_OPLOCK) | |
1315 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1316 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1317 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1318 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1319 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1320 | /* set file as system file if special file such |
1321 | as fifo and server expecting SFU style and | |
1322 | no Unix extensions */ | |
790fe579 | 1323 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1324 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1325 | else | |
1326 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1327 | |
1da177e4 LT |
1328 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1329 | /* but it helps speed up case sensitive checks for other | |
1330 | servers such as Samba */ | |
1331 | if (tcon->ses->capabilities & CAP_UNIX) | |
1332 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1333 | ||
67750fb9 JL |
1334 | if (create_options & CREATE_OPTION_READONLY) |
1335 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1336 | ||
1da177e4 LT |
1337 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1338 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1339 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1340 | /* BB Expirement with various impersonation levels and verify */ |
1341 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1342 | pSMB->SecurityFlags = |
1343 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1344 | ||
1345 | count += name_len; | |
be8e3b00 | 1346 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1347 | |
1348 | pSMB->ByteCount = cpu_to_le16(count); | |
1349 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1350 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1351 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1352 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1353 | if (rc) { |
b6b38f70 | 1354 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1355 | } else { |
09d1db5c | 1356 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1357 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1358 | /* Let caller know file was created so we can set the mode. */ | |
1359 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1360 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1361 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1362 | if (pfile_info) { |
61e74801 SF |
1363 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1364 | 36 /* CreationTime to Attributes */); | |
1365 | /* the file_info buf is endian converted by caller */ | |
1366 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1367 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1368 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1369 | pfile_info->DeletePending = 0; | |
1da177e4 | 1370 | } |
1da177e4 | 1371 | } |
a5a2b489 | 1372 | |
1da177e4 LT |
1373 | cifs_buf_release(pSMB); |
1374 | if (rc == -EAGAIN) | |
1375 | goto openRetry; | |
1376 | return rc; | |
1377 | } | |
1378 | ||
1da177e4 | 1379 | int |
d4ffff1f | 1380 | CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, |
50c2f753 | 1381 | char **buf, int *pbuf_type) |
1da177e4 LT |
1382 | { |
1383 | int rc = -EACCES; | |
1384 | READ_REQ *pSMB = NULL; | |
1385 | READ_RSP *pSMBr = NULL; | |
1386 | char *pReadData = NULL; | |
bfa0d75a | 1387 | int wct; |
ec637e3f SF |
1388 | int resp_buf_type = 0; |
1389 | struct kvec iov[1]; | |
d4ffff1f PS |
1390 | __u32 pid = io_parms->pid; |
1391 | __u16 netfid = io_parms->netfid; | |
1392 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1393 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1394 | unsigned int count = io_parms->length; |
1da177e4 | 1395 | |
b6b38f70 | 1396 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1397 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1398 | wct = 12; |
4c3130ef | 1399 | else { |
bfa0d75a | 1400 | wct = 10; /* old style read */ |
d4ffff1f | 1401 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1402 | /* can not handle this big offset for old */ |
1403 | return -EIO; | |
1404 | } | |
1405 | } | |
1da177e4 LT |
1406 | |
1407 | *nbytes = 0; | |
ec637e3f | 1408 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1409 | if (rc) |
1410 | return rc; | |
1411 | ||
d4ffff1f PS |
1412 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1413 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1414 | ||
1da177e4 LT |
1415 | /* tcon and ses pointer are checked in smb_init */ |
1416 | if (tcon->ses->server == NULL) | |
1417 | return -ECONNABORTED; | |
1418 | ||
ec637e3f | 1419 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1420 | pSMB->Fid = netfid; |
d4ffff1f | 1421 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1422 | if (wct == 12) |
d4ffff1f | 1423 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1424 | |
1da177e4 LT |
1425 | pSMB->Remaining = 0; |
1426 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1427 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1428 | if (wct == 12) |
bfa0d75a SF |
1429 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1430 | else { | |
1431 | /* old style read */ | |
50c2f753 | 1432 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1433 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1434 | pSMBW->ByteCount = 0; |
bfa0d75a | 1435 | } |
ec637e3f SF |
1436 | |
1437 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1438 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1439 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1440 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1441 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1442 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1443 | if (rc) { |
b6b38f70 | 1444 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1445 | } else { |
1446 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1447 | data_length = data_length << 16; | |
1448 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1449 | *nbytes = data_length; | |
1450 | ||
1451 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1452 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1453 | || (data_length > count)) { |
b6b38f70 JP |
1454 | cFYI(1, "bad length %d for count %d", |
1455 | data_length, count); | |
1da177e4 LT |
1456 | rc = -EIO; |
1457 | *nbytes = 0; | |
1458 | } else { | |
ec637e3f | 1459 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1460 | le16_to_cpu(pSMBr->DataOffset); |
1461 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1462 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1463 | rc = -EFAULT; |
26f57364 | 1464 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1465 | if (*buf) |
50c2f753 | 1466 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1467 | } |
1468 | } | |
1da177e4 | 1469 | |
4b8f930f | 1470 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1471 | if (*buf) { |
1472 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1473 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1474 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1475 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1476 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1477 | /* return buffer to caller to free */ |
1478 | *buf = iov[0].iov_base; | |
790fe579 | 1479 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1480 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1481 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1482 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1483 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1484 | |
1485 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1486 | since file handle passed in no longer valid */ |
1487 | return rc; | |
1488 | } | |
1489 | ||
ec637e3f | 1490 | |
1da177e4 | 1491 | int |
fa2989f4 PS |
1492 | CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, |
1493 | unsigned int *nbytes, const char *buf, | |
50c2f753 | 1494 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1495 | { |
1496 | int rc = -EACCES; | |
1497 | WRITE_REQ *pSMB = NULL; | |
1498 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1499 | int bytes_returned, wct; |
1da177e4 LT |
1500 | __u32 bytes_sent; |
1501 | __u16 byte_count; | |
fa2989f4 PS |
1502 | __u32 pid = io_parms->pid; |
1503 | __u16 netfid = io_parms->netfid; | |
1504 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1505 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1506 | unsigned int count = io_parms->length; |
1da177e4 | 1507 | |
a24e2d7d SF |
1508 | *nbytes = 0; |
1509 | ||
b6b38f70 | 1510 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1511 | if (tcon->ses == NULL) |
1c955187 SF |
1512 | return -ECONNABORTED; |
1513 | ||
790fe579 | 1514 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1515 | wct = 14; |
4c3130ef | 1516 | else { |
1c955187 | 1517 | wct = 12; |
4c3130ef SF |
1518 | if ((offset >> 32) > 0) { |
1519 | /* can not handle big offset for old srv */ | |
1520 | return -EIO; | |
1521 | } | |
1522 | } | |
1c955187 SF |
1523 | |
1524 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1525 | (void **) &pSMBr); |
1526 | if (rc) | |
1527 | return rc; | |
fa2989f4 PS |
1528 | |
1529 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1530 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1531 | ||
1da177e4 LT |
1532 | /* tcon and ses pointer are checked in smb_init */ |
1533 | if (tcon->ses->server == NULL) | |
1534 | return -ECONNABORTED; | |
1535 | ||
1536 | pSMB->AndXCommand = 0xFF; /* none */ | |
1537 | pSMB->Fid = netfid; | |
1538 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1539 | if (wct == 14) |
1c955187 | 1540 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1541 | |
1da177e4 LT |
1542 | pSMB->Reserved = 0xFFFFFFFF; |
1543 | pSMB->WriteMode = 0; | |
1544 | pSMB->Remaining = 0; | |
1545 | ||
50c2f753 | 1546 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1547 | can send more if LARGE_WRITE_X capability returned by the server and if |
1548 | our buffer is big enough or if we convert to iovecs on socket writes | |
1549 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1550 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1551 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1552 | } else { | |
1553 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1554 | & ~0xFF; | |
1555 | } | |
1556 | ||
1557 | if (bytes_sent > count) | |
1558 | bytes_sent = count; | |
1559 | pSMB->DataOffset = | |
50c2f753 | 1560 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1561 | if (buf) |
61e74801 | 1562 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1563 | else if (ubuf) { |
1564 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1565 | cifs_buf_release(pSMB); |
1566 | return -EFAULT; | |
1567 | } | |
e30dcf3a | 1568 | } else if (count != 0) { |
1da177e4 LT |
1569 | /* No buffer */ |
1570 | cifs_buf_release(pSMB); | |
1571 | return -EINVAL; | |
e30dcf3a | 1572 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1573 | if (wct == 14) |
e30dcf3a | 1574 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1575 | else /* wct == 12 */ |
e30dcf3a | 1576 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1577 | |
1da177e4 LT |
1578 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1579 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1580 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1581 | |
790fe579 | 1582 | if (wct == 14) |
1c955187 | 1583 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1584 | else { /* old style write has byte count 4 bytes earlier |
1585 | so 4 bytes pad */ | |
1586 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1587 | (struct smb_com_writex_req *)pSMB; |
1588 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1589 | } | |
1da177e4 LT |
1590 | |
1591 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1592 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1593 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1594 | if (rc) { |
f19159dc | 1595 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1596 | } else { |
1597 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1598 | *nbytes = (*nbytes) << 16; | |
1599 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1600 | |
1601 | /* | |
1602 | * Mask off high 16 bits when bytes written as returned by the | |
1603 | * server is greater than bytes requested by the client. Some | |
1604 | * OS/2 servers are known to set incorrect CountHigh values. | |
1605 | */ | |
1606 | if (*nbytes > count) | |
1607 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1608 | } |
1609 | ||
1610 | cifs_buf_release(pSMB); | |
1611 | ||
50c2f753 | 1612 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1613 | since file handle passed in no longer valid */ |
1614 | ||
1615 | return rc; | |
1616 | } | |
1617 | ||
c28c89fc JL |
1618 | void |
1619 | cifs_writedata_release(struct kref *refcount) | |
1620 | { | |
1621 | struct cifs_writedata *wdata = container_of(refcount, | |
1622 | struct cifs_writedata, refcount); | |
1623 | ||
1624 | if (wdata->cfile) | |
1625 | cifsFileInfo_put(wdata->cfile); | |
1626 | ||
1627 | kfree(wdata); | |
1628 | } | |
1629 | ||
1630 | /* | |
1631 | * Write failed with a retryable error. Resend the write request. It's also | |
1632 | * possible that the page was redirtied so re-clean the page. | |
1633 | */ | |
1634 | static void | |
1635 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1636 | { | |
1637 | int i, rc; | |
1638 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1639 | ||
1640 | for (i = 0; i < wdata->nr_pages; i++) { | |
1641 | lock_page(wdata->pages[i]); | |
1642 | clear_page_dirty_for_io(wdata->pages[i]); | |
1643 | } | |
1644 | ||
1645 | do { | |
1646 | rc = cifs_async_writev(wdata); | |
1647 | } while (rc == -EAGAIN); | |
1648 | ||
1649 | for (i = 0; i < wdata->nr_pages; i++) { | |
1650 | if (rc != 0) | |
1651 | SetPageError(wdata->pages[i]); | |
1652 | unlock_page(wdata->pages[i]); | |
1653 | } | |
1654 | ||
1655 | mapping_set_error(inode->i_mapping, rc); | |
1656 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1657 | } | |
1658 | ||
1659 | static void | |
1660 | cifs_writev_complete(struct work_struct *work) | |
1661 | { | |
1662 | struct cifs_writedata *wdata = container_of(work, | |
1663 | struct cifs_writedata, work); | |
1664 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1665 | int i = 0; | |
1666 | ||
1667 | if (wdata->result == 0) { | |
1668 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); | |
1669 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), | |
1670 | wdata->bytes); | |
1671 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1672 | return cifs_writev_requeue(wdata); | |
1673 | ||
1674 | for (i = 0; i < wdata->nr_pages; i++) { | |
1675 | struct page *page = wdata->pages[i]; | |
1676 | if (wdata->result == -EAGAIN) | |
1677 | __set_page_dirty_nobuffers(page); | |
1678 | else if (wdata->result < 0) | |
1679 | SetPageError(page); | |
1680 | end_page_writeback(page); | |
1681 | page_cache_release(page); | |
1682 | } | |
1683 | if (wdata->result != -EAGAIN) | |
1684 | mapping_set_error(inode->i_mapping, wdata->result); | |
1685 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1686 | } | |
1687 | ||
1688 | struct cifs_writedata * | |
1689 | cifs_writedata_alloc(unsigned int nr_pages) | |
1690 | { | |
1691 | struct cifs_writedata *wdata; | |
1692 | ||
1693 | /* this would overflow */ | |
1694 | if (nr_pages == 0) { | |
1695 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
1696 | return NULL; | |
1697 | } | |
1698 | ||
1699 | /* writedata + number of page pointers */ | |
1700 | wdata = kzalloc(sizeof(*wdata) + | |
1701 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1702 | if (wdata != NULL) { | |
1703 | INIT_WORK(&wdata->work, cifs_writev_complete); | |
1704 | kref_init(&wdata->refcount); | |
1705 | } | |
1706 | return wdata; | |
1707 | } | |
1708 | ||
1709 | /* | |
1710 | * Check the midState and signature on received buffer (if any), and queue the | |
1711 | * workqueue completion task. | |
1712 | */ | |
1713 | static void | |
1714 | cifs_writev_callback(struct mid_q_entry *mid) | |
1715 | { | |
1716 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1717 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1718 | unsigned int written; |
1719 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1720 | ||
1721 | switch (mid->midState) { | |
1722 | case MID_RESPONSE_RECEIVED: | |
1723 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1724 | if (wdata->result != 0) | |
1725 | break; | |
1726 | ||
1727 | written = le16_to_cpu(smb->CountHigh); | |
1728 | written <<= 16; | |
1729 | written += le16_to_cpu(smb->Count); | |
1730 | /* | |
1731 | * Mask off high 16 bits when bytes written as returned | |
1732 | * by the server is greater than bytes requested by the | |
1733 | * client. OS/2 servers are known to set incorrect | |
1734 | * CountHigh values. | |
1735 | */ | |
1736 | if (written > wdata->bytes) | |
1737 | written &= 0xFFFF; | |
1738 | ||
1739 | if (written < wdata->bytes) | |
1740 | wdata->result = -ENOSPC; | |
1741 | else | |
1742 | wdata->bytes = written; | |
1743 | break; | |
1744 | case MID_REQUEST_SUBMITTED: | |
1745 | case MID_RETRY_NEEDED: | |
1746 | wdata->result = -EAGAIN; | |
1747 | break; | |
1748 | default: | |
1749 | wdata->result = -EIO; | |
1750 | break; | |
1751 | } | |
1752 | ||
1753 | queue_work(system_nrt_wq, &wdata->work); | |
1754 | DeleteMidQEntry(mid); | |
1755 | atomic_dec(&tcon->ses->server->inFlight); | |
1756 | wake_up(&tcon->ses->server->request_q); | |
1757 | } | |
1758 | ||
1759 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
1760 | int | |
1761 | cifs_async_writev(struct cifs_writedata *wdata) | |
1762 | { | |
1763 | int i, rc = -EACCES; | |
1764 | WRITE_REQ *smb = NULL; | |
1765 | int wct; | |
96daf2b0 | 1766 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1767 | struct inode *inode = wdata->cfile->dentry->d_inode; |
1768 | struct kvec *iov = NULL; | |
1769 | ||
1770 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
1771 | wct = 14; | |
1772 | } else { | |
1773 | wct = 12; | |
1774 | if (wdata->offset >> 32 > 0) { | |
1775 | /* can not handle big offset for old srv */ | |
1776 | return -EIO; | |
1777 | } | |
1778 | } | |
1779 | ||
1780 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
1781 | if (rc) | |
1782 | goto async_writev_out; | |
1783 | ||
1784 | /* 1 iov per page + 1 for header */ | |
1785 | iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS); | |
1786 | if (iov == NULL) { | |
1787 | rc = -ENOMEM; | |
1788 | goto async_writev_out; | |
1789 | } | |
1790 | ||
fa2989f4 PS |
1791 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->cfile->pid); |
1792 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->cfile->pid >> 16)); | |
1793 | ||
c28c89fc JL |
1794 | smb->AndXCommand = 0xFF; /* none */ |
1795 | smb->Fid = wdata->cfile->netfid; | |
1796 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); | |
1797 | if (wct == 14) | |
1798 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
1799 | smb->Reserved = 0xFFFFFFFF; | |
1800 | smb->WriteMode = 0; | |
1801 | smb->Remaining = 0; | |
1802 | ||
1803 | smb->DataOffset = | |
1804 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1805 | ||
1806 | /* 4 for RFC1001 length + 1 for BCC */ | |
1807 | iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; | |
1808 | iov[0].iov_base = smb; | |
1809 | ||
1810 | /* marshal up the pages into iov array */ | |
1811 | wdata->bytes = 0; | |
1812 | for (i = 0; i < wdata->nr_pages; i++) { | |
1813 | iov[i + 1].iov_len = min(inode->i_size - | |
1814 | page_offset(wdata->pages[i]), | |
1815 | (loff_t)PAGE_CACHE_SIZE); | |
1816 | iov[i + 1].iov_base = kmap(wdata->pages[i]); | |
1817 | wdata->bytes += iov[i + 1].iov_len; | |
1818 | } | |
1819 | ||
1820 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
1821 | ||
1822 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
1823 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
1824 | ||
1825 | if (wct == 14) { | |
1826 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
1827 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
1828 | } else { | |
1829 | /* wct == 12 */ | |
1830 | struct smb_com_writex_req *smbw = | |
1831 | (struct smb_com_writex_req *)smb; | |
1832 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
1833 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
1834 | iov[0].iov_len += 4; /* pad bigger by four bytes */ | |
1835 | } | |
1836 | ||
1837 | kref_get(&wdata->refcount); | |
1838 | rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1, | |
1839 | cifs_writev_callback, wdata, false); | |
1840 | ||
1841 | if (rc == 0) | |
1842 | cifs_stats_inc(&tcon->num_writes); | |
1843 | else | |
1844 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1845 | ||
1846 | /* send is done, unmap pages */ | |
1847 | for (i = 0; i < wdata->nr_pages; i++) | |
1848 | kunmap(wdata->pages[i]); | |
1849 | ||
1850 | async_writev_out: | |
1851 | cifs_small_buf_release(smb); | |
1852 | kfree(iov); | |
1853 | return rc; | |
1854 | } | |
1855 | ||
d6e04ae6 | 1856 | int |
fa2989f4 PS |
1857 | CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, |
1858 | unsigned int *nbytes, struct kvec *iov, int n_vec, | |
1859 | const int long_op) | |
1da177e4 LT |
1860 | { |
1861 | int rc = -EACCES; | |
1862 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1863 | int wct; |
d6e04ae6 | 1864 | int smb_hdr_len; |
ec637e3f | 1865 | int resp_buf_type = 0; |
fa2989f4 PS |
1866 | __u32 pid = io_parms->pid; |
1867 | __u16 netfid = io_parms->netfid; | |
1868 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1869 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1870 | unsigned int count = io_parms->length; |
1da177e4 | 1871 | |
fbec9ab9 JL |
1872 | *nbytes = 0; |
1873 | ||
b6b38f70 | 1874 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 1875 | |
4c3130ef | 1876 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1877 | wct = 14; |
4c3130ef | 1878 | } else { |
8cc64c6e | 1879 | wct = 12; |
4c3130ef SF |
1880 | if ((offset >> 32) > 0) { |
1881 | /* can not handle big offset for old srv */ | |
1882 | return -EIO; | |
1883 | } | |
1884 | } | |
8cc64c6e | 1885 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1886 | if (rc) |
1887 | return rc; | |
fa2989f4 PS |
1888 | |
1889 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1890 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1891 | ||
1da177e4 LT |
1892 | /* tcon and ses pointer are checked in smb_init */ |
1893 | if (tcon->ses->server == NULL) | |
1894 | return -ECONNABORTED; | |
1895 | ||
d6e04ae6 | 1896 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1897 | pSMB->Fid = netfid; |
1898 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1899 | if (wct == 14) |
8cc64c6e | 1900 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1901 | pSMB->Reserved = 0xFFFFFFFF; |
1902 | pSMB->WriteMode = 0; | |
1903 | pSMB->Remaining = 0; | |
d6e04ae6 | 1904 | |
1da177e4 | 1905 | pSMB->DataOffset = |
50c2f753 | 1906 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1907 | |
3e84469d SF |
1908 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1909 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1910 | /* header + 1 byte pad */ |
1911 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1912 | if (wct == 14) |
be8e3b00 | 1913 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1914 | else /* wct == 12 */ |
be8e3b00 | 1915 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1916 | if (wct == 14) |
8cc64c6e SF |
1917 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1918 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1919 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1920 | (struct smb_com_writex_req *)pSMB; |
1921 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1922 | } | |
3e84469d | 1923 | iov[0].iov_base = pSMB; |
790fe579 | 1924 | if (wct == 14) |
ec637e3f SF |
1925 | iov[0].iov_len = smb_hdr_len + 4; |
1926 | else /* wct == 12 pad bigger by four bytes */ | |
1927 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1928 | |
1da177e4 | 1929 | |
ec637e3f | 1930 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1931 | long_op); |
a4544347 | 1932 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1933 | if (rc) { |
b6b38f70 | 1934 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 1935 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1936 | /* presumably this can not happen, but best to be safe */ |
1937 | rc = -EIO; | |
d6e04ae6 | 1938 | } else { |
ad7a2926 | 1939 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1940 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1941 | *nbytes = (*nbytes) << 16; | |
1942 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1943 | |
1944 | /* | |
1945 | * Mask off high 16 bits when bytes written as returned by the | |
1946 | * server is greater than bytes requested by the client. OS/2 | |
1947 | * servers are known to set incorrect CountHigh values. | |
1948 | */ | |
1949 | if (*nbytes > count) | |
1950 | *nbytes &= 0xFFFF; | |
50c2f753 | 1951 | } |
1da177e4 | 1952 | |
4b8f930f | 1953 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1954 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1955 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1956 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1957 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1958 | |
50c2f753 | 1959 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1960 | since file handle passed in no longer valid */ |
1961 | ||
1962 | return rc; | |
1963 | } | |
d6e04ae6 SF |
1964 | |
1965 | ||
1da177e4 | 1966 | int |
96daf2b0 | 1967 | CIFSSMBLock(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
1968 | const __u16 smb_file_id, const __u64 len, |
1969 | const __u64 offset, const __u32 numUnlock, | |
12fed00d PS |
1970 | const __u32 numLock, const __u8 lockType, |
1971 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1972 | { |
1973 | int rc = 0; | |
1974 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1975 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1976 | int bytes_returned; |
1977 | int timeout = 0; | |
1978 | __u16 count; | |
1979 | ||
b6b38f70 | 1980 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
1981 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1982 | ||
1da177e4 LT |
1983 | if (rc) |
1984 | return rc; | |
1985 | ||
790fe579 | 1986 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1987 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1988 | pSMB->Timeout = 0; |
4b18f2a9 | 1989 | } else if (waitFlag) { |
133672ef | 1990 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1991 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1992 | } else { | |
1993 | pSMB->Timeout = 0; | |
1994 | } | |
1995 | ||
1996 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1997 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1998 | pSMB->LockType = lockType; | |
12fed00d | 1999 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2000 | pSMB->AndXCommand = 0xFF; /* none */ |
2001 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2002 | ||
790fe579 | 2003 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
2004 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
2005 | /* BB where to store pid high? */ | |
2006 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2007 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2008 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2009 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2010 | count = sizeof(LOCKING_ANDX_RANGE); | |
2011 | } else { | |
2012 | /* oplock break */ | |
2013 | count = 0; | |
2014 | } | |
be8e3b00 | 2015 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2016 | pSMB->ByteCount = cpu_to_le16(count); |
2017 | ||
7ee1af76 JA |
2018 | if (waitFlag) { |
2019 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2020 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2021 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2022 | } else { |
133672ef SF |
2023 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
2024 | timeout); | |
2025 | /* SMB buffer freed by function above */ | |
7ee1af76 | 2026 | } |
a4544347 | 2027 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 2028 | if (rc) |
b6b38f70 | 2029 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2030 | |
50c2f753 | 2031 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2032 | since file handle passed in no longer valid */ |
2033 | return rc; | |
2034 | } | |
2035 | ||
08547b03 | 2036 | int |
96daf2b0 | 2037 | CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon, |
08547b03 | 2038 | const __u16 smb_file_id, const int get_flag, const __u64 len, |
50c2f753 | 2039 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 2040 | const bool waitFlag) |
08547b03 SF |
2041 | { |
2042 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2043 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2044 | struct cifs_posix_lock *parm_data; |
2045 | int rc = 0; | |
3a5ff61c | 2046 | int timeout = 0; |
08547b03 | 2047 | int bytes_returned = 0; |
133672ef | 2048 | int resp_buf_type = 0; |
08547b03 | 2049 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2050 | struct kvec iov[1]; |
08547b03 | 2051 | |
b6b38f70 | 2052 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2053 | |
790fe579 | 2054 | if (pLockData == NULL) |
ed5f0370 | 2055 | return -EINVAL; |
fc94cdb9 | 2056 | |
08547b03 SF |
2057 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2058 | ||
2059 | if (rc) | |
2060 | return rc; | |
2061 | ||
2062 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2063 | ||
50c2f753 | 2064 | params = 6; |
08547b03 SF |
2065 | pSMB->MaxSetupCount = 0; |
2066 | pSMB->Reserved = 0; | |
2067 | pSMB->Flags = 0; | |
08547b03 SF |
2068 | pSMB->Reserved2 = 0; |
2069 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2070 | offset = param_offset + params; | |
2071 | ||
08547b03 SF |
2072 | count = sizeof(struct cifs_posix_lock); |
2073 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2074 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2075 | pSMB->SetupCount = 1; |
2076 | pSMB->Reserved3 = 0; | |
790fe579 | 2077 | if (get_flag) |
08547b03 SF |
2078 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2079 | else | |
2080 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2081 | byte_count = 3 /* pad */ + params + count; | |
2082 | pSMB->DataCount = cpu_to_le16(count); | |
2083 | pSMB->ParameterCount = cpu_to_le16(params); | |
2084 | pSMB->TotalDataCount = pSMB->DataCount; | |
2085 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2086 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2087 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2088 | (((char *) &pSMB->hdr.Protocol) + offset); |
2089 | ||
2090 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2091 | if (waitFlag) { |
133672ef | 2092 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2093 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2094 | pSMB->Timeout = cpu_to_le32(-1); |
2095 | } else | |
2096 | pSMB->Timeout = 0; | |
2097 | ||
08547b03 | 2098 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 2099 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 2100 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2101 | |
2102 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2103 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2104 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2105 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2106 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2107 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2108 | if (waitFlag) { |
2109 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2110 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2111 | } else { | |
133672ef | 2112 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2113 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2114 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2115 | &resp_buf_type, timeout); | |
2116 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2117 | not try to free it twice below on exit */ | |
2118 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2119 | } |
2120 | ||
08547b03 | 2121 | if (rc) { |
b6b38f70 | 2122 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
2123 | } else if (get_flag) { |
2124 | /* lock structure can be returned on get */ | |
2125 | __u16 data_offset; | |
2126 | __u16 data_count; | |
2127 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2128 | ||
820a803f | 2129 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2130 | rc = -EIO; /* bad smb */ |
2131 | goto plk_err_exit; | |
2132 | } | |
fc94cdb9 SF |
2133 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2134 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2135 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2136 | rc = -EIO; |
2137 | goto plk_err_exit; | |
2138 | } | |
2139 | parm_data = (struct cifs_posix_lock *) | |
2140 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2141 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2142 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2143 | else { |
2144 | if (parm_data->lock_type == | |
2145 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2146 | pLockData->fl_type = F_RDLCK; | |
2147 | else if (parm_data->lock_type == | |
2148 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2149 | pLockData->fl_type = F_WRLCK; | |
2150 | ||
5443d130 SF |
2151 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2152 | pLockData->fl_end = pLockData->fl_start + | |
2153 | le64_to_cpu(parm_data->length) - 1; | |
2154 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2155 | } |
08547b03 | 2156 | } |
50c2f753 | 2157 | |
fc94cdb9 | 2158 | plk_err_exit: |
08547b03 SF |
2159 | if (pSMB) |
2160 | cifs_small_buf_release(pSMB); | |
2161 | ||
133672ef SF |
2162 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2163 | cifs_small_buf_release(iov[0].iov_base); | |
2164 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2165 | cifs_buf_release(iov[0].iov_base); | |
2166 | ||
08547b03 SF |
2167 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2168 | since file handle passed in no longer valid */ | |
2169 | ||
2170 | return rc; | |
2171 | } | |
2172 | ||
2173 | ||
1da177e4 | 2174 | int |
96daf2b0 | 2175 | CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2176 | { |
2177 | int rc = 0; | |
2178 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2179 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2180 | |
2181 | /* do not retry on dead session on close */ | |
2182 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2183 | if (rc == -EAGAIN) |
1da177e4 LT |
2184 | return 0; |
2185 | if (rc) | |
2186 | return rc; | |
2187 | ||
1da177e4 | 2188 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2189 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2190 | pSMB->ByteCount = 0; |
133672ef | 2191 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 2192 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 2193 | if (rc) { |
790fe579 | 2194 | if (rc != -EINTR) { |
1da177e4 | 2195 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2196 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2197 | } |
2198 | } | |
2199 | ||
1da177e4 | 2200 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2201 | if (rc == -EAGAIN) |
1da177e4 LT |
2202 | rc = 0; |
2203 | ||
2204 | return rc; | |
2205 | } | |
2206 | ||
b298f223 | 2207 | int |
96daf2b0 | 2208 | CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2209 | { |
2210 | int rc = 0; | |
2211 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2212 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2213 | |
2214 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2215 | if (rc) | |
2216 | return rc; | |
2217 | ||
2218 | pSMB->FileID = (__u16) smb_file_id; | |
2219 | pSMB->ByteCount = 0; | |
2220 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
2221 | cifs_stats_inc(&tcon->num_flushes); | |
2222 | if (rc) | |
b6b38f70 | 2223 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2224 | |
2225 | return rc; | |
2226 | } | |
2227 | ||
1da177e4 | 2228 | int |
96daf2b0 | 2229 | CIFSSMBRename(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2230 | const char *fromName, const char *toName, |
737b758c | 2231 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2232 | { |
2233 | int rc = 0; | |
2234 | RENAME_REQ *pSMB = NULL; | |
2235 | RENAME_RSP *pSMBr = NULL; | |
2236 | int bytes_returned; | |
2237 | int name_len, name_len2; | |
2238 | __u16 count; | |
2239 | ||
b6b38f70 | 2240 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2241 | renameRetry: |
2242 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2243 | (void **) &pSMBr); | |
2244 | if (rc) | |
2245 | return rc; | |
2246 | ||
2247 | pSMB->BufferFormat = 0x04; | |
2248 | pSMB->SearchAttributes = | |
2249 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2250 | ATTR_DIRECTORY); | |
2251 | ||
2252 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2253 | name_len = | |
50c2f753 | 2254 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2255 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2256 | name_len++; /* trailing null */ |
2257 | name_len *= 2; | |
2258 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2259 | /* protocol requires ASCII signature byte on Unicode string */ | |
2260 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2261 | name_len2 = | |
582d21e5 | 2262 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2263 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2264 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2265 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2266 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2267 | name_len = strnlen(fromName, PATH_MAX); |
2268 | name_len++; /* trailing null */ | |
2269 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2270 | name_len2 = strnlen(toName, PATH_MAX); | |
2271 | name_len2++; /* trailing null */ | |
2272 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2273 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2274 | name_len2++; /* trailing null */ | |
2275 | name_len2++; /* signature byte */ | |
2276 | } | |
2277 | ||
2278 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2279 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2280 | pSMB->ByteCount = cpu_to_le16(count); |
2281 | ||
2282 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2283 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2284 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2285 | if (rc) |
b6b38f70 | 2286 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2287 | |
1da177e4 LT |
2288 | cifs_buf_release(pSMB); |
2289 | ||
2290 | if (rc == -EAGAIN) | |
2291 | goto renameRetry; | |
2292 | ||
2293 | return rc; | |
2294 | } | |
2295 | ||
96daf2b0 | 2296 | int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon, |
391e5755 | 2297 | int netfid, const char *target_name, |
50c2f753 | 2298 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2299 | { |
2300 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2301 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2302 | struct set_file_rename *rename_info; |
1da177e4 LT |
2303 | char *data_offset; |
2304 | char dummy_string[30]; | |
2305 | int rc = 0; | |
2306 | int bytes_returned = 0; | |
2307 | int len_of_str; | |
2308 | __u16 params, param_offset, offset, count, byte_count; | |
2309 | ||
b6b38f70 | 2310 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2311 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2312 | (void **) &pSMBr); | |
2313 | if (rc) | |
2314 | return rc; | |
2315 | ||
2316 | params = 6; | |
2317 | pSMB->MaxSetupCount = 0; | |
2318 | pSMB->Reserved = 0; | |
2319 | pSMB->Flags = 0; | |
2320 | pSMB->Timeout = 0; | |
2321 | pSMB->Reserved2 = 0; | |
2322 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2323 | offset = param_offset + params; | |
2324 | ||
2325 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2326 | rename_info = (struct set_file_rename *) data_offset; | |
2327 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2328 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2329 | pSMB->SetupCount = 1; |
2330 | pSMB->Reserved3 = 0; | |
2331 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2332 | byte_count = 3 /* pad */ + params; | |
2333 | pSMB->ParameterCount = cpu_to_le16(params); | |
2334 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2335 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2336 | pSMB->DataOffset = cpu_to_le16(offset); | |
2337 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2338 | rename_info->overwrite = cpu_to_le32(1); | |
2339 | rename_info->root_fid = 0; | |
2340 | /* unicode only call */ | |
790fe579 | 2341 | if (target_name == NULL) { |
50c2f753 SF |
2342 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2343 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2344 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2345 | } else { |
b1a45695 | 2346 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2347 | target_name, PATH_MAX, nls_codepage, |
2348 | remap); | |
1da177e4 LT |
2349 | } |
2350 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2351 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2352 | byte_count += count; |
2353 | pSMB->DataCount = cpu_to_le16(count); | |
2354 | pSMB->TotalDataCount = pSMB->DataCount; | |
2355 | pSMB->Fid = netfid; | |
2356 | pSMB->InformationLevel = | |
2357 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2358 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2359 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2360 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2361 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2362 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2363 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2364 | if (rc) |
b6b38f70 | 2365 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2366 | |
1da177e4 LT |
2367 | cifs_buf_release(pSMB); |
2368 | ||
2369 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2370 | since file handle passed in no longer valid */ | |
2371 | ||
2372 | return rc; | |
2373 | } | |
2374 | ||
2375 | int | |
96daf2b0 | 2376 | CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName, |
50c2f753 SF |
2377 | const __u16 target_tid, const char *toName, const int flags, |
2378 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2379 | { |
2380 | int rc = 0; | |
2381 | COPY_REQ *pSMB = NULL; | |
2382 | COPY_RSP *pSMBr = NULL; | |
2383 | int bytes_returned; | |
2384 | int name_len, name_len2; | |
2385 | __u16 count; | |
2386 | ||
b6b38f70 | 2387 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2388 | copyRetry: |
2389 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2390 | (void **) &pSMBr); | |
2391 | if (rc) | |
2392 | return rc; | |
2393 | ||
2394 | pSMB->BufferFormat = 0x04; | |
2395 | pSMB->Tid2 = target_tid; | |
2396 | ||
2397 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2398 | ||
2399 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2400 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2401 | fromName, PATH_MAX, nls_codepage, |
2402 | remap); | |
1da177e4 LT |
2403 | name_len++; /* trailing null */ |
2404 | name_len *= 2; | |
2405 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2406 | /* protocol requires ASCII signature byte on Unicode string */ | |
2407 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2408 | name_len2 = |
2409 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2410 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2411 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2412 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2413 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2414 | name_len = strnlen(fromName, PATH_MAX); |
2415 | name_len++; /* trailing null */ | |
2416 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2417 | name_len2 = strnlen(toName, PATH_MAX); | |
2418 | name_len2++; /* trailing null */ | |
2419 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2420 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2421 | name_len2++; /* trailing null */ | |
2422 | name_len2++; /* signature byte */ | |
2423 | } | |
2424 | ||
2425 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2426 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2427 | pSMB->ByteCount = cpu_to_le16(count); |
2428 | ||
2429 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2430 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2431 | if (rc) { | |
b6b38f70 JP |
2432 | cFYI(1, "Send error in copy = %d with %d files copied", |
2433 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2434 | } |
0d817bc0 | 2435 | cifs_buf_release(pSMB); |
1da177e4 LT |
2436 | |
2437 | if (rc == -EAGAIN) | |
2438 | goto copyRetry; | |
2439 | ||
2440 | return rc; | |
2441 | } | |
2442 | ||
2443 | int | |
96daf2b0 | 2444 | CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2445 | const char *fromName, const char *toName, |
2446 | const struct nls_table *nls_codepage) | |
2447 | { | |
2448 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2449 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2450 | char *data_offset; | |
2451 | int name_len; | |
2452 | int name_len_target; | |
2453 | int rc = 0; | |
2454 | int bytes_returned = 0; | |
2455 | __u16 params, param_offset, offset, byte_count; | |
2456 | ||
b6b38f70 | 2457 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2458 | createSymLinkRetry: |
2459 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2460 | (void **) &pSMBr); | |
2461 | if (rc) | |
2462 | return rc; | |
2463 | ||
2464 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2465 | name_len = | |
e89dc920 | 2466 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2467 | /* find define for this maxpathcomponent */ |
2468 | , nls_codepage); | |
2469 | name_len++; /* trailing null */ | |
2470 | name_len *= 2; | |
2471 | ||
50c2f753 | 2472 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2473 | name_len = strnlen(fromName, PATH_MAX); |
2474 | name_len++; /* trailing null */ | |
2475 | strncpy(pSMB->FileName, fromName, name_len); | |
2476 | } | |
2477 | params = 6 + name_len; | |
2478 | pSMB->MaxSetupCount = 0; | |
2479 | pSMB->Reserved = 0; | |
2480 | pSMB->Flags = 0; | |
2481 | pSMB->Timeout = 0; | |
2482 | pSMB->Reserved2 = 0; | |
2483 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2484 | InformationLevel) - 4; |
1da177e4 LT |
2485 | offset = param_offset + params; |
2486 | ||
2487 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2488 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2489 | name_len_target = | |
e89dc920 | 2490 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2491 | /* find define for this maxpathcomponent */ |
2492 | , nls_codepage); | |
2493 | name_len_target++; /* trailing null */ | |
2494 | name_len_target *= 2; | |
50c2f753 | 2495 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2496 | name_len_target = strnlen(toName, PATH_MAX); |
2497 | name_len_target++; /* trailing null */ | |
2498 | strncpy(data_offset, toName, name_len_target); | |
2499 | } | |
2500 | ||
2501 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2502 | /* BB find exact max on data count below from sess */ | |
2503 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2504 | pSMB->SetupCount = 1; | |
2505 | pSMB->Reserved3 = 0; | |
2506 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2507 | byte_count = 3 /* pad */ + params + name_len_target; | |
2508 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2509 | pSMB->ParameterCount = cpu_to_le16(params); | |
2510 | pSMB->TotalDataCount = pSMB->DataCount; | |
2511 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2512 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2513 | pSMB->DataOffset = cpu_to_le16(offset); | |
2514 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2515 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2516 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2517 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2518 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2519 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2520 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2521 | if (rc) |
b6b38f70 | 2522 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2523 | |
0d817bc0 | 2524 | cifs_buf_release(pSMB); |
1da177e4 LT |
2525 | |
2526 | if (rc == -EAGAIN) | |
2527 | goto createSymLinkRetry; | |
2528 | ||
2529 | return rc; | |
2530 | } | |
2531 | ||
2532 | int | |
96daf2b0 | 2533 | CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2534 | const char *fromName, const char *toName, |
737b758c | 2535 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2536 | { |
2537 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2538 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2539 | char *data_offset; | |
2540 | int name_len; | |
2541 | int name_len_target; | |
2542 | int rc = 0; | |
2543 | int bytes_returned = 0; | |
2544 | __u16 params, param_offset, offset, byte_count; | |
2545 | ||
b6b38f70 | 2546 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2547 | createHardLinkRetry: |
2548 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2549 | (void **) &pSMBr); | |
2550 | if (rc) | |
2551 | return rc; | |
2552 | ||
2553 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2554 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2555 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2556 | name_len++; /* trailing null */ |
2557 | name_len *= 2; | |
2558 | ||
50c2f753 | 2559 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2560 | name_len = strnlen(toName, PATH_MAX); |
2561 | name_len++; /* trailing null */ | |
2562 | strncpy(pSMB->FileName, toName, name_len); | |
2563 | } | |
2564 | params = 6 + name_len; | |
2565 | pSMB->MaxSetupCount = 0; | |
2566 | pSMB->Reserved = 0; | |
2567 | pSMB->Flags = 0; | |
2568 | pSMB->Timeout = 0; | |
2569 | pSMB->Reserved2 = 0; | |
2570 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2571 | InformationLevel) - 4; |
1da177e4 LT |
2572 | offset = param_offset + params; |
2573 | ||
2574 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2575 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2576 | name_len_target = | |
b1a45695 | 2577 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2578 | nls_codepage, remap); |
1da177e4 LT |
2579 | name_len_target++; /* trailing null */ |
2580 | name_len_target *= 2; | |
50c2f753 | 2581 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2582 | name_len_target = strnlen(fromName, PATH_MAX); |
2583 | name_len_target++; /* trailing null */ | |
2584 | strncpy(data_offset, fromName, name_len_target); | |
2585 | } | |
2586 | ||
2587 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2588 | /* BB find exact max on data count below from sess*/ | |
2589 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2590 | pSMB->SetupCount = 1; | |
2591 | pSMB->Reserved3 = 0; | |
2592 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2593 | byte_count = 3 /* pad */ + params + name_len_target; | |
2594 | pSMB->ParameterCount = cpu_to_le16(params); | |
2595 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2596 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2597 | pSMB->TotalDataCount = pSMB->DataCount; | |
2598 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2599 | pSMB->DataOffset = cpu_to_le16(offset); | |
2600 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2601 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2602 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2603 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2604 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2605 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2606 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2607 | if (rc) |
b6b38f70 | 2608 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2609 | |
2610 | cifs_buf_release(pSMB); | |
2611 | if (rc == -EAGAIN) | |
2612 | goto createHardLinkRetry; | |
2613 | ||
2614 | return rc; | |
2615 | } | |
2616 | ||
2617 | int | |
96daf2b0 | 2618 | CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2619 | const char *fromName, const char *toName, |
737b758c | 2620 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2621 | { |
2622 | int rc = 0; | |
2623 | NT_RENAME_REQ *pSMB = NULL; | |
2624 | RENAME_RSP *pSMBr = NULL; | |
2625 | int bytes_returned; | |
2626 | int name_len, name_len2; | |
2627 | __u16 count; | |
2628 | ||
b6b38f70 | 2629 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2630 | winCreateHardLinkRetry: |
2631 | ||
2632 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2633 | (void **) &pSMBr); | |
2634 | if (rc) | |
2635 | return rc; | |
2636 | ||
2637 | pSMB->SearchAttributes = | |
2638 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2639 | ATTR_DIRECTORY); | |
2640 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2641 | pSMB->ClusterCount = 0; | |
2642 | ||
2643 | pSMB->BufferFormat = 0x04; | |
2644 | ||
2645 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2646 | name_len = | |
b1a45695 | 2647 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2648 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2649 | name_len++; /* trailing null */ |
2650 | name_len *= 2; | |
fcc7c09d JL |
2651 | |
2652 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2653 | pSMB->OldFileName[name_len] = 0x04; | |
2654 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2655 | name_len2 = |
50c2f753 | 2656 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2657 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2658 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2659 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2660 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2661 | name_len = strnlen(fromName, PATH_MAX); |
2662 | name_len++; /* trailing null */ | |
2663 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2664 | name_len2 = strnlen(toName, PATH_MAX); | |
2665 | name_len2++; /* trailing null */ | |
2666 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2667 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2668 | name_len2++; /* trailing null */ | |
2669 | name_len2++; /* signature byte */ | |
2670 | } | |
2671 | ||
2672 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2673 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2674 | pSMB->ByteCount = cpu_to_le16(count); |
2675 | ||
2676 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2677 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2678 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2679 | if (rc) |
b6b38f70 | 2680 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2681 | |
1da177e4 LT |
2682 | cifs_buf_release(pSMB); |
2683 | if (rc == -EAGAIN) | |
2684 | goto winCreateHardLinkRetry; | |
2685 | ||
2686 | return rc; | |
2687 | } | |
2688 | ||
2689 | int | |
96daf2b0 | 2690 | CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *tcon, |
460b9696 | 2691 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2692 | const struct nls_table *nls_codepage) |
2693 | { | |
2694 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2695 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2696 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2697 | int rc = 0; | |
2698 | int bytes_returned; | |
2699 | int name_len; | |
2700 | __u16 params, byte_count; | |
460b9696 | 2701 | char *data_start; |
1da177e4 | 2702 | |
b6b38f70 | 2703 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2704 | |
2705 | querySymLinkRetry: | |
2706 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2707 | (void **) &pSMBr); | |
2708 | if (rc) | |
2709 | return rc; | |
2710 | ||
2711 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2712 | name_len = | |
50c2f753 SF |
2713 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2714 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2715 | name_len++; /* trailing null */ |
2716 | name_len *= 2; | |
50c2f753 | 2717 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2718 | name_len = strnlen(searchName, PATH_MAX); |
2719 | name_len++; /* trailing null */ | |
2720 | strncpy(pSMB->FileName, searchName, name_len); | |
2721 | } | |
2722 | ||
2723 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2724 | pSMB->TotalDataCount = 0; | |
2725 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2726 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2727 | pSMB->MaxSetupCount = 0; |
2728 | pSMB->Reserved = 0; | |
2729 | pSMB->Flags = 0; | |
2730 | pSMB->Timeout = 0; | |
2731 | pSMB->Reserved2 = 0; | |
2732 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2733 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2734 | pSMB->DataCount = 0; |
2735 | pSMB->DataOffset = 0; | |
2736 | pSMB->SetupCount = 1; | |
2737 | pSMB->Reserved3 = 0; | |
2738 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2739 | byte_count = params + 1 /* pad */ ; | |
2740 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2741 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2742 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2743 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2744 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2745 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2746 | ||
2747 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2748 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2749 | if (rc) { | |
b6b38f70 | 2750 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
2751 | } else { |
2752 | /* decode response */ | |
2753 | ||
2754 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2755 | /* BB also check enough total bytes returned */ |
820a803f | 2756 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2757 | rc = -EIO; |
1da177e4 | 2758 | else { |
0e0d2cf3 | 2759 | bool is_unicode; |
460b9696 JL |
2760 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2761 | ||
2762 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2763 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2764 | |
0e0d2cf3 SF |
2765 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2766 | is_unicode = true; | |
2767 | else | |
2768 | is_unicode = false; | |
2769 | ||
737b758c | 2770 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2771 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2772 | is_unicode, nls_codepage); |
8b6427a2 | 2773 | if (!*symlinkinfo) |
460b9696 | 2774 | rc = -ENOMEM; |
1da177e4 LT |
2775 | } |
2776 | } | |
2777 | cifs_buf_release(pSMB); | |
2778 | if (rc == -EAGAIN) | |
2779 | goto querySymLinkRetry; | |
2780 | return rc; | |
2781 | } | |
2782 | ||
c52a9554 SF |
2783 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
2784 | /* | |
2785 | * Recent Windows versions now create symlinks more frequently | |
2786 | * and they use the "reparse point" mechanism below. We can of course | |
2787 | * do symlinks nicely to Samba and other servers which support the | |
2788 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2789 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2790 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2791 | * In the interim this code has been moved to its own config option so | |
2792 | * it is not compiled in by default until callers fixed up and more tested. | |
2793 | */ | |
1da177e4 | 2794 | int |
96daf2b0 | 2795 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2796 | const unsigned char *searchName, |
50c2f753 | 2797 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2798 | const struct nls_table *nls_codepage) |
2799 | { | |
2800 | int rc = 0; | |
2801 | int bytes_returned; | |
50c2f753 SF |
2802 | struct smb_com_transaction_ioctl_req *pSMB; |
2803 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 2804 | |
b6b38f70 | 2805 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
2806 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2807 | (void **) &pSMBr); | |
2808 | if (rc) | |
2809 | return rc; | |
2810 | ||
2811 | pSMB->TotalParameterCount = 0 ; | |
2812 | pSMB->TotalDataCount = 0; | |
2813 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2814 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2815 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2816 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2817 | pSMB->MaxSetupCount = 4; |
2818 | pSMB->Reserved = 0; | |
2819 | pSMB->ParameterOffset = 0; | |
2820 | pSMB->DataCount = 0; | |
2821 | pSMB->DataOffset = 0; | |
2822 | pSMB->SetupCount = 4; | |
2823 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2824 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2825 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2826 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2827 | pSMB->IsRootFlag = 0; | |
2828 | pSMB->Fid = fid; /* file handle always le */ | |
2829 | pSMB->ByteCount = 0; | |
2830 | ||
2831 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2832 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2833 | if (rc) { | |
b6b38f70 | 2834 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
2835 | } else { /* decode response */ |
2836 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2837 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
2838 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
2839 | /* BB also check enough total bytes returned */ | |
1da177e4 | 2840 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
2841 | goto qreparse_out; |
2842 | } | |
2843 | if (data_count && (data_count < 2048)) { | |
2844 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 2845 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 2846 | |
afe48c31 | 2847 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2848 | (struct reparse_data *) |
2849 | ((char *)&pSMBr->hdr.Protocol | |
2850 | + data_offset); | |
afe48c31 SF |
2851 | if ((char *)reparse_buf >= end_of_smb) { |
2852 | rc = -EIO; | |
2853 | goto qreparse_out; | |
2854 | } | |
2855 | if ((reparse_buf->LinkNamesBuf + | |
2856 | reparse_buf->TargetNameOffset + | |
2857 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 2858 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
2859 | rc = -EIO; |
2860 | goto qreparse_out; | |
2861 | } | |
50c2f753 | 2862 | |
afe48c31 SF |
2863 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2864 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2865 | (reparse_buf->LinkNamesBuf + |
2866 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2867 | buflen, |
2868 | reparse_buf->TargetNameLen, | |
2869 | nls_codepage, 0); | |
2870 | } else { /* ASCII names */ | |
2871 | strncpy(symlinkinfo, | |
2872 | reparse_buf->LinkNamesBuf + | |
2873 | reparse_buf->TargetNameOffset, | |
2874 | min_t(const int, buflen, | |
2875 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2876 | } |
afe48c31 SF |
2877 | } else { |
2878 | rc = -EIO; | |
b6b38f70 JP |
2879 | cFYI(1, "Invalid return data count on " |
2880 | "get reparse info ioctl"); | |
1da177e4 | 2881 | } |
afe48c31 SF |
2882 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2883 | does not go off the end of the buffer */ | |
b6b38f70 | 2884 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 2885 | } |
989c7e51 | 2886 | |
1da177e4 | 2887 | qreparse_out: |
4a6d87f1 | 2888 | cifs_buf_release(pSMB); |
1da177e4 LT |
2889 | |
2890 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2891 | since file handle passed in no longer valid */ | |
2892 | ||
2893 | return rc; | |
2894 | } | |
c52a9554 | 2895 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
2896 | |
2897 | #ifdef CONFIG_CIFS_POSIX | |
2898 | ||
2899 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2900 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2901 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2902 | { |
2903 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2904 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2905 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2906 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 2907 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
2908 | |
2909 | return; | |
2910 | } | |
2911 | ||
2912 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2913 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2914 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2915 | { |
2916 | int size = 0; | |
2917 | int i; | |
2918 | __u16 count; | |
50c2f753 SF |
2919 | struct cifs_posix_ace *pACE; |
2920 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2921 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2922 | |
2923 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2924 | return -EOPNOTSUPP; | |
2925 | ||
790fe579 | 2926 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2927 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2928 | pACE = &cifs_acl->ace_array[0]; | |
2929 | size = sizeof(struct cifs_posix_acl); | |
2930 | size += sizeof(struct cifs_posix_ace) * count; | |
2931 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2932 | if (size_of_data_area < size) { |
b6b38f70 JP |
2933 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
2934 | size_of_data_area, size); | |
1da177e4 LT |
2935 | return -EINVAL; |
2936 | } | |
790fe579 | 2937 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2938 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2939 | size = sizeof(struct cifs_posix_acl); | |
2940 | size += sizeof(struct cifs_posix_ace) * count; | |
2941 | /* skip past access ACEs to get to default ACEs */ | |
2942 | pACE = &cifs_acl->ace_array[count]; | |
2943 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2944 | size += sizeof(struct cifs_posix_ace) * count; | |
2945 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2946 | if (size_of_data_area < size) |
1da177e4 LT |
2947 | return -EINVAL; |
2948 | } else { | |
2949 | /* illegal type */ | |
2950 | return -EINVAL; | |
2951 | } | |
2952 | ||
2953 | size = posix_acl_xattr_size(count); | |
790fe579 | 2954 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2955 | /* used to query ACL EA size */ |
790fe579 | 2956 | } else if (size > buflen) { |
1da177e4 LT |
2957 | return -ERANGE; |
2958 | } else /* buffer big enough */ { | |
ff7feac9 | 2959 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2960 | for (i = 0; i < count ; i++) { |
2961 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2962 | pACE++; | |
1da177e4 LT |
2963 | } |
2964 | } | |
2965 | return size; | |
2966 | } | |
2967 | ||
50c2f753 SF |
2968 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2969 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2970 | { |
2971 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2972 | ||
ff7feac9 SF |
2973 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2974 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2975 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2976 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2977 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2978 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2979 | } else |
ff7feac9 | 2980 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 2981 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
2982 | return rc; |
2983 | } | |
2984 | ||
2985 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2986 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2987 | const int buflen, const int acl_type) | |
1da177e4 LT |
2988 | { |
2989 | __u16 rc = 0; | |
50c2f753 SF |
2990 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2991 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2992 | int count; |
2993 | int i; | |
2994 | ||
790fe579 | 2995 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2996 | return 0; |
2997 | ||
2998 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 2999 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 3000 | "version of %d", |
b6b38f70 | 3001 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 3002 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3003 | cFYI(1, "unknown POSIX ACL version %d", |
3004 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3005 | return 0; |
3006 | } | |
3007 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3008 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3009 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3010 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3011 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3012 | else { |
b6b38f70 | 3013 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3014 | return 0; |
3015 | } | |
50c2f753 | 3016 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3017 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3018 | &local_acl->a_entries[i]); | |
790fe579 | 3019 | if (rc != 0) { |
1da177e4 LT |
3020 | /* ACE not converted */ |
3021 | break; | |
3022 | } | |
3023 | } | |
790fe579 | 3024 | if (rc == 0) { |
1da177e4 LT |
3025 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3026 | rc += sizeof(struct cifs_posix_acl); | |
3027 | /* BB add check to make sure ACL does not overflow SMB */ | |
3028 | } | |
3029 | return rc; | |
3030 | } | |
3031 | ||
3032 | int | |
96daf2b0 | 3033 | CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3034 | const unsigned char *searchName, |
3035 | char *acl_inf, const int buflen, const int acl_type, | |
3036 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3037 | { |
3038 | /* SMB_QUERY_POSIX_ACL */ | |
3039 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3040 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3041 | int rc = 0; | |
3042 | int bytes_returned; | |
3043 | int name_len; | |
3044 | __u16 params, byte_count; | |
50c2f753 | 3045 | |
b6b38f70 | 3046 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3047 | |
3048 | queryAclRetry: | |
3049 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3050 | (void **) &pSMBr); | |
3051 | if (rc) | |
3052 | return rc; | |
50c2f753 | 3053 | |
1da177e4 LT |
3054 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3055 | name_len = | |
50c2f753 | 3056 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3057 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3058 | name_len++; /* trailing null */ |
3059 | name_len *= 2; | |
3060 | pSMB->FileName[name_len] = 0; | |
3061 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3062 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3063 | name_len = strnlen(searchName, PATH_MAX); |
3064 | name_len++; /* trailing null */ | |
3065 | strncpy(pSMB->FileName, searchName, name_len); | |
3066 | } | |
3067 | ||
3068 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3069 | pSMB->TotalDataCount = 0; | |
3070 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3071 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3072 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3073 | pSMB->MaxSetupCount = 0; | |
3074 | pSMB->Reserved = 0; | |
3075 | pSMB->Flags = 0; | |
3076 | pSMB->Timeout = 0; | |
3077 | pSMB->Reserved2 = 0; | |
3078 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3079 | offsetof(struct smb_com_transaction2_qpi_req, |
3080 | InformationLevel) - 4); | |
1da177e4 LT |
3081 | pSMB->DataCount = 0; |
3082 | pSMB->DataOffset = 0; | |
3083 | pSMB->SetupCount = 1; | |
3084 | pSMB->Reserved3 = 0; | |
3085 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3086 | byte_count = params + 1 /* pad */ ; | |
3087 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3088 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3089 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3090 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3091 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3092 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3093 | ||
3094 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3095 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 3096 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 3097 | if (rc) { |
b6b38f70 | 3098 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3099 | } else { |
3100 | /* decode response */ | |
50c2f753 | 3101 | |
1da177e4 | 3102 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3103 | /* BB also check enough total bytes returned */ |
820a803f | 3104 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3105 | rc = -EIO; /* bad smb */ |
3106 | else { | |
3107 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3108 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3109 | rc = cifs_copy_posix_acl(acl_inf, | |
3110 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3111 | buflen, acl_type, count); |
1da177e4 LT |
3112 | } |
3113 | } | |
3114 | cifs_buf_release(pSMB); | |
3115 | if (rc == -EAGAIN) | |
3116 | goto queryAclRetry; | |
3117 | return rc; | |
3118 | } | |
3119 | ||
3120 | int | |
96daf2b0 | 3121 | CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3122 | const unsigned char *fileName, |
3123 | const char *local_acl, const int buflen, | |
3124 | const int acl_type, | |
3125 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3126 | { |
3127 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3128 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3129 | char *parm_data; | |
3130 | int name_len; | |
3131 | int rc = 0; | |
3132 | int bytes_returned = 0; | |
3133 | __u16 params, byte_count, data_count, param_offset, offset; | |
3134 | ||
b6b38f70 | 3135 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3136 | setAclRetry: |
3137 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3138 | (void **) &pSMBr); |
1da177e4 LT |
3139 | if (rc) |
3140 | return rc; | |
3141 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3142 | name_len = | |
50c2f753 | 3143 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 3144 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3145 | name_len++; /* trailing null */ |
3146 | name_len *= 2; | |
50c2f753 | 3147 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3148 | name_len = strnlen(fileName, PATH_MAX); |
3149 | name_len++; /* trailing null */ | |
3150 | strncpy(pSMB->FileName, fileName, name_len); | |
3151 | } | |
3152 | params = 6 + name_len; | |
3153 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3154 | /* BB find max SMB size from sess */ |
3155 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3156 | pSMB->MaxSetupCount = 0; |
3157 | pSMB->Reserved = 0; | |
3158 | pSMB->Flags = 0; | |
3159 | pSMB->Timeout = 0; | |
3160 | pSMB->Reserved2 = 0; | |
3161 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3162 | InformationLevel) - 4; |
1da177e4 LT |
3163 | offset = param_offset + params; |
3164 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3165 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3166 | ||
3167 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3168 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3169 | |
790fe579 | 3170 | if (data_count == 0) { |
1da177e4 LT |
3171 | rc = -EOPNOTSUPP; |
3172 | goto setACLerrorExit; | |
3173 | } | |
3174 | pSMB->DataOffset = cpu_to_le16(offset); | |
3175 | pSMB->SetupCount = 1; | |
3176 | pSMB->Reserved3 = 0; | |
3177 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3178 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3179 | byte_count = 3 /* pad */ + params + data_count; | |
3180 | pSMB->DataCount = cpu_to_le16(data_count); | |
3181 | pSMB->TotalDataCount = pSMB->DataCount; | |
3182 | pSMB->ParameterCount = cpu_to_le16(params); | |
3183 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3184 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3185 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3186 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3187 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3188 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3189 | if (rc) |
b6b38f70 | 3190 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3191 | |
3192 | setACLerrorExit: | |
3193 | cifs_buf_release(pSMB); | |
3194 | if (rc == -EAGAIN) | |
3195 | goto setAclRetry; | |
3196 | return rc; | |
3197 | } | |
3198 | ||
f654bac2 SF |
3199 | /* BB fix tabs in this function FIXME BB */ |
3200 | int | |
96daf2b0 | 3201 | CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3202 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3203 | { |
50c2f753 SF |
3204 | int rc = 0; |
3205 | struct smb_t2_qfi_req *pSMB = NULL; | |
3206 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3207 | int bytes_returned; | |
3208 | __u16 params, byte_count; | |
f654bac2 | 3209 | |
b6b38f70 | 3210 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3211 | if (tcon == NULL) |
3212 | return -ENODEV; | |
f654bac2 SF |
3213 | |
3214 | GetExtAttrRetry: | |
790fe579 SF |
3215 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3216 | (void **) &pSMBr); | |
3217 | if (rc) | |
3218 | return rc; | |
f654bac2 | 3219 | |
ad7a2926 | 3220 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3221 | pSMB->t2.TotalDataCount = 0; |
3222 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3223 | /* BB find exact max data count below from sess structure BB */ | |
3224 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3225 | pSMB->t2.MaxSetupCount = 0; | |
3226 | pSMB->t2.Reserved = 0; | |
3227 | pSMB->t2.Flags = 0; | |
3228 | pSMB->t2.Timeout = 0; | |
3229 | pSMB->t2.Reserved2 = 0; | |
3230 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3231 | Fid) - 4); | |
3232 | pSMB->t2.DataCount = 0; | |
3233 | pSMB->t2.DataOffset = 0; | |
3234 | pSMB->t2.SetupCount = 1; | |
3235 | pSMB->t2.Reserved3 = 0; | |
3236 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3237 | byte_count = params + 1 /* pad */ ; | |
3238 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3239 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3240 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3241 | pSMB->Pad = 0; | |
f654bac2 | 3242 | pSMB->Fid = netfid; |
be8e3b00 | 3243 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3244 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3245 | ||
3246 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3247 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3248 | if (rc) { | |
b6b38f70 | 3249 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3250 | } else { |
3251 | /* decode response */ | |
3252 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3253 | /* BB also check enough total bytes returned */ |
820a803f | 3254 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3255 | /* If rc should we check for EOPNOSUPP and |
3256 | disable the srvino flag? or in caller? */ | |
3257 | rc = -EIO; /* bad smb */ | |
3258 | else { | |
3259 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3260 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3261 | struct file_chattr_info *pfinfo; | |
3262 | /* BB Do we need a cast or hash here ? */ | |
3263 | if (count != 16) { | |
b6b38f70 | 3264 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3265 | rc = -EIO; |
3266 | goto GetExtAttrOut; | |
3267 | } | |
3268 | pfinfo = (struct file_chattr_info *) | |
3269 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3270 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3271 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3272 | } |
3273 | } | |
f654bac2 | 3274 | GetExtAttrOut: |
790fe579 SF |
3275 | cifs_buf_release(pSMB); |
3276 | if (rc == -EAGAIN) | |
3277 | goto GetExtAttrRetry; | |
3278 | return rc; | |
f654bac2 SF |
3279 | } |
3280 | ||
f654bac2 | 3281 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3282 | |
79df1bae JL |
3283 | #ifdef CONFIG_CIFS_ACL |
3284 | /* | |
3285 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3286 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3287 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3288 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3289 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3290 | * by caller | |
3291 | */ | |
3292 | static int | |
3293 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3294 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3295 | void **ret_buf) |
3296 | { | |
3297 | int rc; | |
3298 | __u32 temp_offset; | |
3299 | struct smb_com_ntransact_req *pSMB; | |
3300 | ||
3301 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3302 | (void **)&pSMB); | |
3303 | if (rc) | |
3304 | return rc; | |
3305 | *ret_buf = (void *)pSMB; | |
3306 | pSMB->Reserved = 0; | |
3307 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3308 | pSMB->TotalDataCount = 0; | |
3309 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
3310 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3311 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3312 | pSMB->DataCount = pSMB->TotalDataCount; | |
3313 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3314 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3315 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3316 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3317 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3318 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3319 | return 0; | |
3320 | } | |
3321 | ||
3322 | static int | |
3323 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3324 | __u32 *pparmlen, __u32 *pdatalen) | |
3325 | { | |
3326 | char *end_of_smb; | |
3327 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3328 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3329 | u16 bcc; |
79df1bae JL |
3330 | |
3331 | *pdatalen = 0; | |
3332 | *pparmlen = 0; | |
3333 | ||
3334 | if (buf == NULL) | |
3335 | return -EINVAL; | |
3336 | ||
3337 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3338 | ||
820a803f JL |
3339 | bcc = get_bcc(&pSMBr->hdr); |
3340 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3341 | (char *)&pSMBr->ByteCount; |
3342 | ||
3343 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3344 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3345 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3346 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3347 | ||
3348 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3349 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3350 | ||
3351 | /* should we also check that parm and data areas do not overlap? */ | |
3352 | if (*ppparm > end_of_smb) { | |
3353 | cFYI(1, "parms start after end of smb"); | |
3354 | return -EINVAL; | |
3355 | } else if (parm_count + *ppparm > end_of_smb) { | |
3356 | cFYI(1, "parm end after end of smb"); | |
3357 | return -EINVAL; | |
3358 | } else if (*ppdata > end_of_smb) { | |
3359 | cFYI(1, "data starts after end of smb"); | |
3360 | return -EINVAL; | |
3361 | } else if (data_count + *ppdata > end_of_smb) { | |
3362 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3363 | *ppdata, data_count, (data_count + *ppdata), | |
3364 | end_of_smb, pSMBr); | |
3365 | return -EINVAL; | |
820a803f | 3366 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3367 | cFYI(1, "parm count and data count larger than SMB"); |
3368 | return -EINVAL; | |
3369 | } | |
3370 | *pdatalen = data_count; | |
3371 | *pparmlen = parm_count; | |
3372 | return 0; | |
3373 | } | |
3374 | ||
0a4b92c0 SF |
3375 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3376 | int | |
96daf2b0 | 3377 | CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3378 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3379 | { |
3380 | int rc = 0; | |
3381 | int buf_type = 0; | |
ad7a2926 | 3382 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3383 | struct kvec iov[1]; |
3384 | ||
b6b38f70 | 3385 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3386 | |
630f3f0c SF |
3387 | *pbuflen = 0; |
3388 | *acl_inf = NULL; | |
3389 | ||
b9c7a2bb | 3390 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3391 | 8 /* parm len */, tcon, (void **) &pSMB); |
3392 | if (rc) | |
3393 | return rc; | |
3394 | ||
3395 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3396 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3397 | pSMB->MaxSetupCount = 0; | |
3398 | pSMB->Fid = fid; /* file handle always le */ | |
3399 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3400 | CIFS_ACL_DACL); | |
3401 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3402 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3403 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3404 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3405 | |
a761ac57 | 3406 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3407 | 0); |
0a4b92c0 SF |
3408 | cifs_stats_inc(&tcon->num_acl_get); |
3409 | if (rc) { | |
b6b38f70 | 3410 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3411 | } else { /* decode response */ |
ad7a2926 | 3412 | __le32 *parm; |
630f3f0c SF |
3413 | __u32 parm_len; |
3414 | __u32 acl_len; | |
50c2f753 | 3415 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3416 | char *pdata; |
0a4b92c0 SF |
3417 | |
3418 | /* validate_nttransact */ | |
50c2f753 | 3419 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3420 | &pdata, &parm_len, pbuflen); |
790fe579 | 3421 | if (rc) |
0a4b92c0 SF |
3422 | goto qsec_out; |
3423 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3424 | ||
b6b38f70 | 3425 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3426 | |
3427 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3428 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3429 | *pbuflen = 0; |
0a4b92c0 SF |
3430 | goto qsec_out; |
3431 | } | |
3432 | ||
3433 | /* BB check that data area is minimum length and as big as acl_len */ | |
3434 | ||
af6f4612 | 3435 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3436 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3437 | cERROR(1, "acl length %d does not match %d", |
3438 | acl_len, *pbuflen); | |
630f3f0c SF |
3439 | if (*pbuflen > acl_len) |
3440 | *pbuflen = acl_len; | |
3441 | } | |
0a4b92c0 | 3442 | |
630f3f0c SF |
3443 | /* check if buffer is big enough for the acl |
3444 | header followed by the smallest SID */ | |
3445 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3446 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3447 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3448 | rc = -EINVAL; |
3449 | *pbuflen = 0; | |
3450 | } else { | |
3451 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3452 | if (*acl_inf == NULL) { | |
3453 | *pbuflen = 0; | |
3454 | rc = -ENOMEM; | |
3455 | } | |
3456 | memcpy(*acl_inf, pdata, *pbuflen); | |
3457 | } | |
0a4b92c0 SF |
3458 | } |
3459 | qsec_out: | |
790fe579 | 3460 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3461 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3462 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3463 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3464 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3465 | return rc; |
3466 | } | |
97837582 SF |
3467 | |
3468 | int | |
96daf2b0 | 3469 | CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
97837582 SF |
3470 | struct cifs_ntsd *pntsd, __u32 acllen) |
3471 | { | |
3472 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3473 | int rc = 0; | |
3474 | int bytes_returned = 0; | |
3475 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3476 | NTRANSACT_RSP *pSMBr = NULL; | |
3477 | ||
3478 | setCifsAclRetry: | |
3479 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3480 | (void **) &pSMBr); | |
3481 | if (rc) | |
3482 | return (rc); | |
3483 | ||
3484 | pSMB->MaxSetupCount = 0; | |
3485 | pSMB->Reserved = 0; | |
3486 | ||
3487 | param_count = 8; | |
3488 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3489 | data_count = acllen; | |
3490 | data_offset = param_offset + param_count; | |
3491 | byte_count = 3 /* pad */ + param_count; | |
3492 | ||
3493 | pSMB->DataCount = cpu_to_le32(data_count); | |
3494 | pSMB->TotalDataCount = pSMB->DataCount; | |
3495 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3496 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3497 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3498 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3499 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3500 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3501 | pSMB->SetupCount = 0; | |
3502 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3503 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3504 | ||
3505 | pSMB->Fid = fid; /* file handle always le */ | |
3506 | pSMB->Reserved2 = 0; | |
3507 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3508 | ||
3509 | if (pntsd && acllen) { | |
3510 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3511 | (char *) pntsd, | |
3512 | acllen); | |
be8e3b00 | 3513 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3514 | } else |
be8e3b00 | 3515 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3516 | |
3517 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3518 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3519 | ||
b6b38f70 | 3520 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3521 | if (rc) |
b6b38f70 | 3522 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3523 | cifs_buf_release(pSMB); |
3524 | ||
3525 | if (rc == -EAGAIN) | |
3526 | goto setCifsAclRetry; | |
3527 | ||
3528 | return (rc); | |
3529 | } | |
3530 | ||
79df1bae | 3531 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3532 | |
6b8edfe0 SF |
3533 | /* Legacy Query Path Information call for lookup to old servers such |
3534 | as Win9x/WinME */ | |
96daf2b0 | 3535 | int SMBQueryInformation(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3536 | const unsigned char *searchName, |
3537 | FILE_ALL_INFO *pFinfo, | |
3538 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3539 | { |
ad7a2926 SF |
3540 | QUERY_INFORMATION_REQ *pSMB; |
3541 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3542 | int rc = 0; |
3543 | int bytes_returned; | |
3544 | int name_len; | |
3545 | ||
b6b38f70 | 3546 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3547 | QInfRetry: |
3548 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3549 | (void **) &pSMBr); |
6b8edfe0 SF |
3550 | if (rc) |
3551 | return rc; | |
3552 | ||
3553 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3554 | name_len = | |
50c2f753 SF |
3555 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3556 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3557 | name_len++; /* trailing null */ |
3558 | name_len *= 2; | |
50c2f753 | 3559 | } else { |
6b8edfe0 SF |
3560 | name_len = strnlen(searchName, PATH_MAX); |
3561 | name_len++; /* trailing null */ | |
3562 | strncpy(pSMB->FileName, searchName, name_len); | |
3563 | } | |
3564 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3565 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3566 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3567 | pSMB->ByteCount = cpu_to_le16(name_len); |
3568 | ||
3569 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3570 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3571 | if (rc) { |
b6b38f70 | 3572 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3573 | } else if (pFinfo) { |
1bd5bbcb SF |
3574 | struct timespec ts; |
3575 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3576 | |
3577 | /* decode response */ | |
1bd5bbcb | 3578 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3579 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3580 | ts.tv_nsec = 0; |
3581 | ts.tv_sec = time; | |
3582 | /* decode time fields */ | |
733f99ac | 3583 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3584 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3585 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3586 | pFinfo->AllocationSize = |
3587 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3588 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3589 | pFinfo->Attributes = | |
3590 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3591 | } else |
3592 | rc = -EIO; /* bad buffer passed in */ | |
3593 | ||
3594 | cifs_buf_release(pSMB); | |
3595 | ||
3596 | if (rc == -EAGAIN) | |
3597 | goto QInfRetry; | |
3598 | ||
3599 | return rc; | |
3600 | } | |
3601 | ||
bcd5357f | 3602 | int |
96daf2b0 | 3603 | CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3604 | u16 netfid, FILE_ALL_INFO *pFindData) |
3605 | { | |
3606 | struct smb_t2_qfi_req *pSMB = NULL; | |
3607 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3608 | int rc = 0; | |
3609 | int bytes_returned; | |
3610 | __u16 params, byte_count; | |
3611 | ||
3612 | QFileInfoRetry: | |
3613 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3614 | (void **) &pSMBr); | |
3615 | if (rc) | |
3616 | return rc; | |
3617 | ||
3618 | params = 2 /* level */ + 2 /* fid */; | |
3619 | pSMB->t2.TotalDataCount = 0; | |
3620 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3621 | /* BB find exact max data count below from sess structure BB */ | |
3622 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3623 | pSMB->t2.MaxSetupCount = 0; | |
3624 | pSMB->t2.Reserved = 0; | |
3625 | pSMB->t2.Flags = 0; | |
3626 | pSMB->t2.Timeout = 0; | |
3627 | pSMB->t2.Reserved2 = 0; | |
3628 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3629 | Fid) - 4); | |
3630 | pSMB->t2.DataCount = 0; | |
3631 | pSMB->t2.DataOffset = 0; | |
3632 | pSMB->t2.SetupCount = 1; | |
3633 | pSMB->t2.Reserved3 = 0; | |
3634 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3635 | byte_count = params + 1 /* pad */ ; | |
3636 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3637 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3638 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3639 | pSMB->Pad = 0; | |
3640 | pSMB->Fid = netfid; | |
be8e3b00 | 3641 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3642 | |
bcd5357f JL |
3643 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3644 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3645 | if (rc) { | |
f19159dc | 3646 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3647 | } else { /* decode response */ |
3648 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3649 | |
bcd5357f JL |
3650 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3651 | rc = -EIO; | |
820a803f | 3652 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3653 | rc = -EIO; /* bad smb */ |
3654 | else if (pFindData) { | |
3655 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3656 | memcpy((char *) pFindData, | |
3657 | (char *) &pSMBr->hdr.Protocol + | |
3658 | data_offset, sizeof(FILE_ALL_INFO)); | |
3659 | } else | |
3660 | rc = -ENOMEM; | |
3661 | } | |
3662 | cifs_buf_release(pSMB); | |
3663 | if (rc == -EAGAIN) | |
3664 | goto QFileInfoRetry; | |
6b8edfe0 | 3665 | |
bcd5357f JL |
3666 | return rc; |
3667 | } | |
6b8edfe0 | 3668 | |
1da177e4 | 3669 | int |
96daf2b0 | 3670 | CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3671 | const unsigned char *searchName, |
ad7a2926 | 3672 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3673 | int legacy /* old style infolevel */, |
737b758c | 3674 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3675 | { |
3676 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3677 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3678 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3679 | int rc = 0; | |
3680 | int bytes_returned; | |
3681 | int name_len; | |
3682 | __u16 params, byte_count; | |
3683 | ||
b6b38f70 | 3684 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3685 | QPathInfoRetry: |
3686 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3687 | (void **) &pSMBr); | |
3688 | if (rc) | |
3689 | return rc; | |
3690 | ||
3691 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3692 | name_len = | |
50c2f753 | 3693 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3694 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3695 | name_len++; /* trailing null */ |
3696 | name_len *= 2; | |
50c2f753 | 3697 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3698 | name_len = strnlen(searchName, PATH_MAX); |
3699 | name_len++; /* trailing null */ | |
3700 | strncpy(pSMB->FileName, searchName, name_len); | |
3701 | } | |
3702 | ||
50c2f753 | 3703 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3704 | pSMB->TotalDataCount = 0; |
3705 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3706 | /* BB find exact max SMB PDU from sess structure BB */ |
3707 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3708 | pSMB->MaxSetupCount = 0; |
3709 | pSMB->Reserved = 0; | |
3710 | pSMB->Flags = 0; | |
3711 | pSMB->Timeout = 0; | |
3712 | pSMB->Reserved2 = 0; | |
3713 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3714 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3715 | pSMB->DataCount = 0; |
3716 | pSMB->DataOffset = 0; | |
3717 | pSMB->SetupCount = 1; | |
3718 | pSMB->Reserved3 = 0; | |
3719 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3720 | byte_count = params + 1 /* pad */ ; | |
3721 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3722 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3723 | if (legacy) |
acf1a1b1 SF |
3724 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3725 | else | |
3726 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3727 | pSMB->Reserved4 = 0; |
be8e3b00 | 3728 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3729 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3730 | ||
3731 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3732 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3733 | if (rc) { | |
b6b38f70 | 3734 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3735 | } else { /* decode response */ |
3736 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3737 | ||
acf1a1b1 SF |
3738 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3739 | rc = -EIO; | |
820a803f | 3740 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3741 | rc = -EIO; /* bad smb */ |
820a803f | 3742 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3743 | rc = -EIO; /* 24 or 26 expected but we do not read |
3744 | last field */ | |
3745 | else if (pFindData) { | |
acf1a1b1 | 3746 | int size; |
1da177e4 | 3747 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3748 | |
3749 | /* On legacy responses we do not read the last field, | |
3750 | EAsize, fortunately since it varies by subdialect and | |
3751 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3752 | bytes depending but we don't care here */ | |
3753 | if (legacy) | |
acf1a1b1 SF |
3754 | size = sizeof(FILE_INFO_STANDARD); |
3755 | else | |
3756 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3757 | memcpy((char *) pFindData, |
3758 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3759 | data_offset, size); |
1da177e4 LT |
3760 | } else |
3761 | rc = -ENOMEM; | |
3762 | } | |
3763 | cifs_buf_release(pSMB); | |
3764 | if (rc == -EAGAIN) | |
3765 | goto QPathInfoRetry; | |
3766 | ||
3767 | return rc; | |
3768 | } | |
3769 | ||
c8634fd3 | 3770 | int |
96daf2b0 | 3771 | CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
3772 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
3773 | { | |
3774 | struct smb_t2_qfi_req *pSMB = NULL; | |
3775 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3776 | int rc = 0; | |
3777 | int bytes_returned; | |
3778 | __u16 params, byte_count; | |
3779 | ||
3780 | UnixQFileInfoRetry: | |
3781 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3782 | (void **) &pSMBr); | |
3783 | if (rc) | |
3784 | return rc; | |
3785 | ||
3786 | params = 2 /* level */ + 2 /* fid */; | |
3787 | pSMB->t2.TotalDataCount = 0; | |
3788 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3789 | /* BB find exact max data count below from sess structure BB */ | |
3790 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3791 | pSMB->t2.MaxSetupCount = 0; | |
3792 | pSMB->t2.Reserved = 0; | |
3793 | pSMB->t2.Flags = 0; | |
3794 | pSMB->t2.Timeout = 0; | |
3795 | pSMB->t2.Reserved2 = 0; | |
3796 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3797 | Fid) - 4); | |
3798 | pSMB->t2.DataCount = 0; | |
3799 | pSMB->t2.DataOffset = 0; | |
3800 | pSMB->t2.SetupCount = 1; | |
3801 | pSMB->t2.Reserved3 = 0; | |
3802 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3803 | byte_count = params + 1 /* pad */ ; | |
3804 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3805 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3806 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3807 | pSMB->Pad = 0; | |
3808 | pSMB->Fid = netfid; | |
be8e3b00 | 3809 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
3810 | |
3811 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3812 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3813 | if (rc) { | |
f19159dc | 3814 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3815 | } else { /* decode response */ |
3816 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3817 | ||
820a803f | 3818 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 3819 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3820 | "Unix Extensions can be disabled on mount " |
f19159dc | 3821 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3822 | rc = -EIO; /* bad smb */ |
3823 | } else { | |
3824 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3825 | memcpy((char *) pFindData, | |
3826 | (char *) &pSMBr->hdr.Protocol + | |
3827 | data_offset, | |
3828 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3829 | } | |
3830 | } | |
3831 | ||
3832 | cifs_buf_release(pSMB); | |
3833 | if (rc == -EAGAIN) | |
3834 | goto UnixQFileInfoRetry; | |
3835 | ||
3836 | return rc; | |
3837 | } | |
3838 | ||
1da177e4 | 3839 | int |
96daf2b0 | 3840 | CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3841 | const unsigned char *searchName, |
582d21e5 | 3842 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3843 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3844 | { |
3845 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3846 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3847 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3848 | int rc = 0; | |
3849 | int bytes_returned = 0; | |
3850 | int name_len; | |
3851 | __u16 params, byte_count; | |
3852 | ||
b6b38f70 | 3853 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3854 | UnixQPathInfoRetry: |
3855 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3856 | (void **) &pSMBr); | |
3857 | if (rc) | |
3858 | return rc; | |
3859 | ||
3860 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3861 | name_len = | |
b1a45695 | 3862 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3863 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3864 | name_len++; /* trailing null */ |
3865 | name_len *= 2; | |
50c2f753 | 3866 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3867 | name_len = strnlen(searchName, PATH_MAX); |
3868 | name_len++; /* trailing null */ | |
3869 | strncpy(pSMB->FileName, searchName, name_len); | |
3870 | } | |
3871 | ||
50c2f753 | 3872 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3873 | pSMB->TotalDataCount = 0; |
3874 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3875 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3876 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3877 | pSMB->MaxSetupCount = 0; |
3878 | pSMB->Reserved = 0; | |
3879 | pSMB->Flags = 0; | |
3880 | pSMB->Timeout = 0; | |
3881 | pSMB->Reserved2 = 0; | |
3882 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3883 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3884 | pSMB->DataCount = 0; |
3885 | pSMB->DataOffset = 0; | |
3886 | pSMB->SetupCount = 1; | |
3887 | pSMB->Reserved3 = 0; | |
3888 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3889 | byte_count = params + 1 /* pad */ ; | |
3890 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3891 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3892 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3893 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3894 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3895 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3896 | ||
3897 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3898 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3899 | if (rc) { | |
b6b38f70 | 3900 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3901 | } else { /* decode response */ |
3902 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3903 | ||
820a803f | 3904 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 3905 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3906 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3907 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3908 | rc = -EIO; /* bad smb */ |
3909 | } else { | |
3910 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3911 | memcpy((char *) pFindData, | |
3912 | (char *) &pSMBr->hdr.Protocol + | |
3913 | data_offset, | |
630f3f0c | 3914 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3915 | } |
3916 | } | |
3917 | cifs_buf_release(pSMB); | |
3918 | if (rc == -EAGAIN) | |
3919 | goto UnixQPathInfoRetry; | |
3920 | ||
3921 | return rc; | |
3922 | } | |
3923 | ||
1da177e4 LT |
3924 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3925 | int | |
96daf2b0 | 3926 | CIFSFindFirst(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 3927 | const char *searchName, |
1da177e4 | 3928 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3929 | __u16 *pnetfid, |
3930 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3931 | { |
3932 | /* level 257 SMB_ */ | |
3933 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3934 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3935 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3936 | int rc = 0; |
3937 | int bytes_returned = 0; | |
3938 | int name_len; | |
3939 | __u16 params, byte_count; | |
3940 | ||
b6b38f70 | 3941 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3942 | |
3943 | findFirstRetry: | |
3944 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3945 | (void **) &pSMBr); | |
3946 | if (rc) | |
3947 | return rc; | |
3948 | ||
3949 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3950 | name_len = | |
50c2f753 | 3951 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3952 | PATH_MAX, nls_codepage, remap); |
3953 | /* We can not add the asterik earlier in case | |
3954 | it got remapped to 0xF03A as if it were part of the | |
3955 | directory name instead of a wildcard */ | |
1da177e4 | 3956 | name_len *= 2; |
ac67055e | 3957 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3958 | pSMB->FileName[name_len+1] = 0; |
3959 | pSMB->FileName[name_len+2] = '*'; | |
3960 | pSMB->FileName[name_len+3] = 0; | |
3961 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3962 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3963 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3964 | name_len += 2; |
1da177e4 LT |
3965 | } else { /* BB add check for overrun of SMB buf BB */ |
3966 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3967 | /* BB fix here and in unicode clause above ie |
790fe579 | 3968 | if (name_len > buffersize-header) |
1da177e4 LT |
3969 | free buffer exit; BB */ |
3970 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3971 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3972 | pSMB->FileName[name_len+1] = '*'; |
3973 | pSMB->FileName[name_len+2] = 0; | |
3974 | name_len += 3; | |
1da177e4 LT |
3975 | } |
3976 | ||
3977 | params = 12 + name_len /* includes null */ ; | |
3978 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3979 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3980 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3981 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3982 | pSMB->MaxSetupCount = 0; | |
3983 | pSMB->Reserved = 0; | |
3984 | pSMB->Flags = 0; | |
3985 | pSMB->Timeout = 0; | |
3986 | pSMB->Reserved2 = 0; | |
3987 | byte_count = params + 1 /* pad */ ; | |
3988 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3989 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3990 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3991 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3992 | - 4); | |
1da177e4 LT |
3993 | pSMB->DataCount = 0; |
3994 | pSMB->DataOffset = 0; | |
3995 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3996 | pSMB->Reserved3 = 0; | |
3997 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3998 | pSMB->SearchAttributes = | |
3999 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4000 | ATTR_DIRECTORY); | |
50c2f753 SF |
4001 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
4002 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
4003 | CIFS_SEARCH_RETURN_RESUME); |
4004 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
4005 | ||
4006 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4007 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4008 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4009 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4010 | ||
4011 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4012 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4013 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 4014 | |
88274815 SF |
4015 | if (rc) {/* BB add logic to retry regular search if Unix search |
4016 | rejected unexpectedly by server */ | |
1da177e4 | 4017 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4018 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4019 | |
88274815 | 4020 | cifs_buf_release(pSMB); |
1da177e4 LT |
4021 | |
4022 | /* BB eventually could optimize out free and realloc of buf */ | |
4023 | /* for this case */ | |
4024 | if (rc == -EAGAIN) | |
4025 | goto findFirstRetry; | |
4026 | } else { /* decode response */ | |
4027 | /* BB remember to free buffer if error BB */ | |
4028 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4029 | if (rc == 0) { |
b77d753c SF |
4030 | unsigned int lnoff; |
4031 | ||
1da177e4 | 4032 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4033 | psrch_inf->unicode = true; |
1da177e4 | 4034 | else |
4b18f2a9 | 4035 | psrch_inf->unicode = false; |
1da177e4 LT |
4036 | |
4037 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4038 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4039 | psrch_inf->srch_entries_start = |
4040 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4041 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4042 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4043 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4044 | ||
790fe579 | 4045 | if (parms->EndofSearch) |
4b18f2a9 | 4046 | psrch_inf->endOfSearch = true; |
1da177e4 | 4047 | else |
4b18f2a9 | 4048 | psrch_inf->endOfSearch = false; |
1da177e4 | 4049 | |
50c2f753 SF |
4050 | psrch_inf->entries_in_buffer = |
4051 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4052 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4053 | psrch_inf->entries_in_buffer; |
b77d753c SF |
4054 | lnoff = le16_to_cpu(parms->LastNameOffset); |
4055 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
4056 | lnoff) { | |
b6b38f70 | 4057 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4058 | psrch_inf->last_entry = NULL; |
4059 | return rc; | |
4060 | } | |
4061 | ||
0752f152 | 4062 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4063 | lnoff; |
4064 | ||
1da177e4 LT |
4065 | *pnetfid = parms->SearchHandle; |
4066 | } else { | |
4067 | cifs_buf_release(pSMB); | |
4068 | } | |
4069 | } | |
4070 | ||
4071 | return rc; | |
4072 | } | |
4073 | ||
96daf2b0 | 4074 | int CIFSFindNext(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4075 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
4076 | { |
4077 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4078 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4079 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4080 | char *response_data; |
4081 | int rc = 0; | |
9438fabb JL |
4082 | int bytes_returned; |
4083 | unsigned int name_len; | |
1da177e4 LT |
4084 | __u16 params, byte_count; |
4085 | ||
b6b38f70 | 4086 | cFYI(1, "In FindNext"); |
1da177e4 | 4087 | |
4b18f2a9 | 4088 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4089 | return -ENOENT; |
4090 | ||
4091 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4092 | (void **) &pSMBr); | |
4093 | if (rc) | |
4094 | return rc; | |
4095 | ||
50c2f753 | 4096 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4097 | byte_count = 0; |
4098 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4099 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
4100 | pSMB->MaxDataCount = | |
50c2f753 SF |
4101 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
4102 | 0xFFFFFF00); | |
1da177e4 LT |
4103 | pSMB->MaxSetupCount = 0; |
4104 | pSMB->Reserved = 0; | |
4105 | pSMB->Flags = 0; | |
4106 | pSMB->Timeout = 0; | |
4107 | pSMB->Reserved2 = 0; | |
4108 | pSMB->ParameterOffset = cpu_to_le16( | |
4109 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4110 | pSMB->DataCount = 0; | |
4111 | pSMB->DataOffset = 0; | |
4112 | pSMB->SetupCount = 1; | |
4113 | pSMB->Reserved3 = 0; | |
4114 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4115 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4116 | pSMB->SearchCount = | |
630f3f0c | 4117 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4118 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4119 | pSMB->ResumeKey = psrch_inf->resume_key; | |
4120 | pSMB->SearchFlags = | |
4121 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
4122 | ||
4123 | name_len = psrch_inf->resume_name_len; | |
4124 | params += name_len; | |
790fe579 | 4125 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4126 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4127 | byte_count += name_len; | |
ef6724e3 SF |
4128 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4129 | pSMB->ResumeFileName[name_len] = 0; | |
4130 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4131 | } else { |
4132 | rc = -EINVAL; | |
4133 | goto FNext2_err_exit; | |
4134 | } | |
4135 | byte_count = params + 1 /* pad */ ; | |
4136 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4137 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4138 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4139 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4140 | |
1da177e4 LT |
4141 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4142 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4143 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
4144 | if (rc) { |
4145 | if (rc == -EBADF) { | |
4b18f2a9 | 4146 | psrch_inf->endOfSearch = true; |
6353450a | 4147 | cifs_buf_release(pSMB); |
50c2f753 | 4148 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4149 | } else |
b6b38f70 | 4150 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4151 | } else { /* decode response */ |
4152 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4153 | |
790fe579 | 4154 | if (rc == 0) { |
b77d753c SF |
4155 | unsigned int lnoff; |
4156 | ||
1da177e4 LT |
4157 | /* BB fixme add lock for file (srch_info) struct here */ |
4158 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4159 | psrch_inf->unicode = true; |
1da177e4 | 4160 | else |
4b18f2a9 | 4161 | psrch_inf->unicode = false; |
1da177e4 LT |
4162 | response_data = (char *) &pSMBr->hdr.Protocol + |
4163 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4164 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4165 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4166 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4167 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4168 | cifs_small_buf_release( |
4169 | psrch_inf->ntwrk_buf_start); | |
4170 | else | |
4171 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4172 | psrch_inf->srch_entries_start = response_data; |
4173 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4174 | psrch_inf->smallBuf = 0; |
790fe579 | 4175 | if (parms->EndofSearch) |
4b18f2a9 | 4176 | psrch_inf->endOfSearch = true; |
1da177e4 | 4177 | else |
4b18f2a9 | 4178 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4179 | psrch_inf->entries_in_buffer = |
4180 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4181 | psrch_inf->index_of_last_entry += |
4182 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
4183 | lnoff = le16_to_cpu(parms->LastNameOffset); |
4184 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
4185 | lnoff) { | |
b6b38f70 | 4186 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4187 | psrch_inf->last_entry = NULL; |
4188 | return rc; | |
4189 | } else | |
4190 | psrch_inf->last_entry = | |
4191 | psrch_inf->srch_entries_start + lnoff; | |
4192 | ||
b6b38f70 JP |
4193 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4194 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4195 | |
4196 | /* BB fixme add unlock here */ | |
4197 | } | |
4198 | ||
4199 | } | |
4200 | ||
4201 | /* BB On error, should we leave previous search buf (and count and | |
4202 | last entry fields) intact or free the previous one? */ | |
4203 | ||
4204 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4205 | since file handle passed in no longer valid */ | |
4206 | FNext2_err_exit: | |
4207 | if (rc != 0) | |
4208 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4209 | return rc; |
4210 | } | |
4211 | ||
4212 | int | |
96daf2b0 | 4213 | CIFSFindClose(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4214 | const __u16 searchHandle) |
1da177e4 LT |
4215 | { |
4216 | int rc = 0; | |
4217 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4218 | |
b6b38f70 | 4219 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4220 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4221 | ||
4222 | /* no sense returning error if session restarted | |
4223 | as file handle has been closed */ | |
790fe579 | 4224 | if (rc == -EAGAIN) |
1da177e4 LT |
4225 | return 0; |
4226 | if (rc) | |
4227 | return rc; | |
4228 | ||
1da177e4 LT |
4229 | pSMB->FileID = searchHandle; |
4230 | pSMB->ByteCount = 0; | |
133672ef | 4231 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4232 | if (rc) |
b6b38f70 | 4233 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4234 | |
a4544347 | 4235 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
4236 | |
4237 | /* Since session is dead, search handle closed on server already */ | |
4238 | if (rc == -EAGAIN) | |
4239 | rc = 0; | |
4240 | ||
4241 | return rc; | |
4242 | } | |
4243 | ||
1da177e4 | 4244 | int |
96daf2b0 | 4245 | CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4246 | const unsigned char *searchName, |
ad7a2926 | 4247 | __u64 *inode_number, |
50c2f753 | 4248 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4249 | { |
4250 | int rc = 0; | |
4251 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4252 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4253 | int name_len, bytes_returned; | |
4254 | __u16 params, byte_count; | |
4255 | ||
b6b38f70 | 4256 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 4257 | if (tcon == NULL) |
50c2f753 | 4258 | return -ENODEV; |
1da177e4 LT |
4259 | |
4260 | GetInodeNumberRetry: | |
4261 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4262 | (void **) &pSMBr); |
1da177e4 LT |
4263 | if (rc) |
4264 | return rc; | |
4265 | ||
1da177e4 LT |
4266 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4267 | name_len = | |
b1a45695 | 4268 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 4269 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4270 | name_len++; /* trailing null */ |
4271 | name_len *= 2; | |
50c2f753 | 4272 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4273 | name_len = strnlen(searchName, PATH_MAX); |
4274 | name_len++; /* trailing null */ | |
4275 | strncpy(pSMB->FileName, searchName, name_len); | |
4276 | } | |
4277 | ||
4278 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4279 | pSMB->TotalDataCount = 0; | |
4280 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4281 | /* BB find exact max data count below from sess structure BB */ | |
4282 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4283 | pSMB->MaxSetupCount = 0; | |
4284 | pSMB->Reserved = 0; | |
4285 | pSMB->Flags = 0; | |
4286 | pSMB->Timeout = 0; | |
4287 | pSMB->Reserved2 = 0; | |
4288 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4289 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4290 | pSMB->DataCount = 0; |
4291 | pSMB->DataOffset = 0; | |
4292 | pSMB->SetupCount = 1; | |
4293 | pSMB->Reserved3 = 0; | |
4294 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4295 | byte_count = params + 1 /* pad */ ; | |
4296 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4297 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4298 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4299 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4300 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4301 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4302 | ||
4303 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4304 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4305 | if (rc) { | |
b6b38f70 | 4306 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4307 | } else { |
4308 | /* decode response */ | |
4309 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4310 | /* BB also check enough total bytes returned */ |
820a803f | 4311 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4312 | /* If rc should we check for EOPNOSUPP and |
4313 | disable the srvino flag? or in caller? */ | |
4314 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4315 | else { |
1da177e4 LT |
4316 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4317 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4318 | struct file_internal_info *pfinfo; |
1da177e4 | 4319 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4320 | if (count < 8) { |
b6b38f70 | 4321 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4322 | rc = -EIO; |
4323 | goto GetInodeNumOut; | |
4324 | } | |
4325 | pfinfo = (struct file_internal_info *) | |
4326 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4327 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4328 | } |
4329 | } | |
4330 | GetInodeNumOut: | |
4331 | cifs_buf_release(pSMB); | |
4332 | if (rc == -EAGAIN) | |
4333 | goto GetInodeNumberRetry; | |
4334 | return rc; | |
4335 | } | |
1da177e4 | 4336 | |
fec4585f IM |
4337 | /* parses DFS refferal V3 structure |
4338 | * caller is responsible for freeing target_nodes | |
4339 | * returns: | |
4340 | * on success - 0 | |
4341 | * on failure - errno | |
4342 | */ | |
4343 | static int | |
a1fe78f1 | 4344 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4345 | unsigned int *num_of_nodes, |
4346 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4347 | const struct nls_table *nls_codepage, int remap, |
4348 | const char *searchName) | |
fec4585f IM |
4349 | { |
4350 | int i, rc = 0; | |
4351 | char *data_end; | |
4352 | bool is_unicode; | |
4353 | struct dfs_referral_level_3 *ref; | |
4354 | ||
5ca33c6a HH |
4355 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4356 | is_unicode = true; | |
4357 | else | |
4358 | is_unicode = false; | |
fec4585f IM |
4359 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4360 | ||
4361 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4362 | cERROR(1, "num_referrals: must be at least > 0," |
4363 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4364 | rc = -EINVAL; |
a1fe78f1 | 4365 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4366 | } |
4367 | ||
4368 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4369 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4370 | cERROR(1, "Referrals of V%d version are not supported," |
4371 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4372 | rc = -EINVAL; |
a1fe78f1 | 4373 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4374 | } |
4375 | ||
4376 | /* get the upper boundary of the resp buffer */ | |
4377 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4378 | le16_to_cpu(pSMBr->t2.DataCount); | |
4379 | ||
f19159dc | 4380 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4381 | *num_of_nodes, |
b6b38f70 | 4382 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4383 | |
4384 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4385 | *num_of_nodes, GFP_KERNEL); | |
4386 | if (*target_nodes == NULL) { | |
b6b38f70 | 4387 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4388 | rc = -ENOMEM; |
a1fe78f1 | 4389 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4390 | } |
4391 | ||
3ad2f3fb | 4392 | /* collect necessary data from referrals */ |
fec4585f IM |
4393 | for (i = 0; i < *num_of_nodes; i++) { |
4394 | char *temp; | |
4395 | int max_len; | |
4396 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4397 | ||
0e0d2cf3 | 4398 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4399 | if (is_unicode) { |
331c3135 JL |
4400 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4401 | GFP_KERNEL); | |
2920ee2b SF |
4402 | if (tmp == NULL) { |
4403 | rc = -ENOMEM; | |
4404 | goto parse_DFS_referrals_exit; | |
4405 | } | |
2c55608f IM |
4406 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4407 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4408 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4409 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4410 | nls_codepage); |
4411 | kfree(tmp); | |
4412 | } else | |
4413 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4414 | ||
fec4585f IM |
4415 | node->server_type = le16_to_cpu(ref->ServerType); |
4416 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4417 | ||
4418 | /* copy DfsPath */ | |
4419 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4420 | max_len = data_end - temp; | |
d185cda7 SF |
4421 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4422 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4423 | if (!node->path_name) { |
4424 | rc = -ENOMEM; | |
a1fe78f1 | 4425 | goto parse_DFS_referrals_exit; |
066ce689 | 4426 | } |
fec4585f IM |
4427 | |
4428 | /* copy link target UNC */ | |
4429 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4430 | max_len = data_end - temp; | |
d185cda7 SF |
4431 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4432 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4433 | if (!node->node_name) |
4434 | rc = -ENOMEM; | |
fec4585f IM |
4435 | } |
4436 | ||
a1fe78f1 | 4437 | parse_DFS_referrals_exit: |
fec4585f IM |
4438 | if (rc) { |
4439 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4440 | *target_nodes = NULL; | |
4441 | *num_of_nodes = 0; | |
4442 | } | |
4443 | return rc; | |
4444 | } | |
4445 | ||
1da177e4 | 4446 | int |
96daf2b0 | 4447 | CIFSGetDFSRefer(const int xid, struct cifs_ses *ses, |
1da177e4 | 4448 | const unsigned char *searchName, |
c2cf07d5 SF |
4449 | struct dfs_info3_param **target_nodes, |
4450 | unsigned int *num_of_nodes, | |
737b758c | 4451 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4452 | { |
4453 | /* TRANS2_GET_DFS_REFERRAL */ | |
4454 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4455 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4456 | int rc = 0; |
4457 | int bytes_returned; | |
4458 | int name_len; | |
1da177e4 | 4459 | __u16 params, byte_count; |
c2cf07d5 SF |
4460 | *num_of_nodes = 0; |
4461 | *target_nodes = NULL; | |
1da177e4 | 4462 | |
b6b38f70 | 4463 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4464 | if (ses == NULL) |
4465 | return -ENODEV; | |
4466 | getDFSRetry: | |
4467 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4468 | (void **) &pSMBr); | |
4469 | if (rc) | |
4470 | return rc; | |
50c2f753 SF |
4471 | |
4472 | /* server pointer checked in called function, | |
1982c344 SF |
4473 | but should never be null here anyway */ |
4474 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4475 | pSMB->hdr.Tid = ses->ipc_tid; |
4476 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4477 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4478 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4479 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4480 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4481 | |
4482 | if (ses->capabilities & CAP_UNICODE) { | |
4483 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4484 | name_len = | |
b1a45695 | 4485 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4486 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4487 | name_len++; /* trailing null */ |
4488 | name_len *= 2; | |
50c2f753 | 4489 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4490 | name_len = strnlen(searchName, PATH_MAX); |
4491 | name_len++; /* trailing null */ | |
4492 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4493 | } | |
4494 | ||
790fe579 | 4495 | if (ses->server) { |
96daf2b0 | 4496 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4497 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4498 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4499 | } | |
4500 | ||
50c2f753 | 4501 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4502 | |
1da177e4 LT |
4503 | params = 2 /* level */ + name_len /*includes null */ ; |
4504 | pSMB->TotalDataCount = 0; | |
4505 | pSMB->DataCount = 0; | |
4506 | pSMB->DataOffset = 0; | |
4507 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4508 | /* BB find exact max SMB PDU from sess structure BB */ |
4509 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4510 | pSMB->MaxSetupCount = 0; |
4511 | pSMB->Reserved = 0; | |
4512 | pSMB->Flags = 0; | |
4513 | pSMB->Timeout = 0; | |
4514 | pSMB->Reserved2 = 0; | |
4515 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4516 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4517 | pSMB->SetupCount = 1; |
4518 | pSMB->Reserved3 = 0; | |
4519 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4520 | byte_count = params + 3 /* pad */ ; | |
4521 | pSMB->ParameterCount = cpu_to_le16(params); | |
4522 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4523 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4524 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4525 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4526 | ||
4527 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4528 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4529 | if (rc) { | |
b6b38f70 | 4530 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4531 | goto GetDFSRefExit; |
4532 | } | |
4533 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4534 | |
c2cf07d5 | 4535 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4536 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4537 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4538 | goto GetDFSRefExit; |
4539 | } | |
c2cf07d5 | 4540 | |
b6b38f70 | 4541 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4542 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4543 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4544 | |
fec4585f | 4545 | /* parse returned result into more usable form */ |
a1fe78f1 | 4546 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4547 | target_nodes, nls_codepage, remap, |
4548 | searchName); | |
c2cf07d5 | 4549 | |
1da177e4 | 4550 | GetDFSRefExit: |
0d817bc0 | 4551 | cifs_buf_release(pSMB); |
1da177e4 LT |
4552 | |
4553 | if (rc == -EAGAIN) | |
4554 | goto getDFSRetry; | |
4555 | ||
4556 | return rc; | |
4557 | } | |
4558 | ||
20962438 SF |
4559 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4560 | int | |
96daf2b0 | 4561 | SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
20962438 SF |
4562 | { |
4563 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4564 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4565 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4566 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4567 | int rc = 0; | |
4568 | int bytes_returned = 0; | |
4569 | __u16 params, byte_count; | |
4570 | ||
b6b38f70 | 4571 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4572 | oldQFSInfoRetry: |
4573 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4574 | (void **) &pSMBr); | |
4575 | if (rc) | |
4576 | return rc; | |
20962438 SF |
4577 | |
4578 | params = 2; /* level */ | |
4579 | pSMB->TotalDataCount = 0; | |
4580 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4581 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4582 | pSMB->MaxSetupCount = 0; | |
4583 | pSMB->Reserved = 0; | |
4584 | pSMB->Flags = 0; | |
4585 | pSMB->Timeout = 0; | |
4586 | pSMB->Reserved2 = 0; | |
4587 | byte_count = params + 1 /* pad */ ; | |
4588 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4589 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4590 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4591 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4592 | pSMB->DataCount = 0; | |
4593 | pSMB->DataOffset = 0; | |
4594 | pSMB->SetupCount = 1; | |
4595 | pSMB->Reserved3 = 0; | |
4596 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4597 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4598 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4599 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4600 | ||
4601 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4602 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4603 | if (rc) { | |
b6b38f70 | 4604 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4605 | } else { /* decode response */ |
4606 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4607 | ||
820a803f | 4608 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4609 | rc = -EIO; /* bad smb */ |
4610 | else { | |
4611 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4612 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4613 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4614 | |
50c2f753 | 4615 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4616 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4617 | FSData->f_bsize = | |
4618 | le16_to_cpu(response_data->BytesPerSector) * | |
4619 | le32_to_cpu(response_data-> | |
4620 | SectorsPerAllocationUnit); | |
4621 | FSData->f_blocks = | |
50c2f753 | 4622 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4623 | FSData->f_bfree = FSData->f_bavail = |
4624 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4625 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4626 | (unsigned long long)FSData->f_blocks, | |
4627 | (unsigned long long)FSData->f_bfree, | |
4628 | FSData->f_bsize); | |
20962438 SF |
4629 | } |
4630 | } | |
4631 | cifs_buf_release(pSMB); | |
4632 | ||
4633 | if (rc == -EAGAIN) | |
4634 | goto oldQFSInfoRetry; | |
4635 | ||
4636 | return rc; | |
4637 | } | |
4638 | ||
1da177e4 | 4639 | int |
96daf2b0 | 4640 | CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4641 | { |
4642 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4643 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4644 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4645 | FILE_SYSTEM_INFO *response_data; | |
4646 | int rc = 0; | |
4647 | int bytes_returned = 0; | |
4648 | __u16 params, byte_count; | |
4649 | ||
b6b38f70 | 4650 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4651 | QFSInfoRetry: |
4652 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4653 | (void **) &pSMBr); | |
4654 | if (rc) | |
4655 | return rc; | |
4656 | ||
4657 | params = 2; /* level */ | |
4658 | pSMB->TotalDataCount = 0; | |
4659 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4660 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4661 | pSMB->MaxSetupCount = 0; |
4662 | pSMB->Reserved = 0; | |
4663 | pSMB->Flags = 0; | |
4664 | pSMB->Timeout = 0; | |
4665 | pSMB->Reserved2 = 0; | |
4666 | byte_count = params + 1 /* pad */ ; | |
4667 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4668 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4669 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4670 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4671 | pSMB->DataCount = 0; |
4672 | pSMB->DataOffset = 0; | |
4673 | pSMB->SetupCount = 1; | |
4674 | pSMB->Reserved3 = 0; | |
4675 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4676 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4677 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4678 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4679 | ||
4680 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4681 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4682 | if (rc) { | |
b6b38f70 | 4683 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4684 | } else { /* decode response */ |
50c2f753 | 4685 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4686 | |
820a803f | 4687 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4688 | rc = -EIO; /* bad smb */ |
4689 | else { | |
4690 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4691 | |
4692 | response_data = | |
4693 | (FILE_SYSTEM_INFO | |
4694 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4695 | data_offset); | |
4696 | FSData->f_bsize = | |
4697 | le32_to_cpu(response_data->BytesPerSector) * | |
4698 | le32_to_cpu(response_data-> | |
4699 | SectorsPerAllocationUnit); | |
4700 | FSData->f_blocks = | |
4701 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4702 | FSData->f_bfree = FSData->f_bavail = | |
4703 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4704 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4705 | (unsigned long long)FSData->f_blocks, | |
4706 | (unsigned long long)FSData->f_bfree, | |
4707 | FSData->f_bsize); | |
1da177e4 LT |
4708 | } |
4709 | } | |
4710 | cifs_buf_release(pSMB); | |
4711 | ||
4712 | if (rc == -EAGAIN) | |
4713 | goto QFSInfoRetry; | |
4714 | ||
4715 | return rc; | |
4716 | } | |
4717 | ||
4718 | int | |
96daf2b0 | 4719 | CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4720 | { |
4721 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4722 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4723 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4724 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4725 | int rc = 0; | |
4726 | int bytes_returned = 0; | |
4727 | __u16 params, byte_count; | |
4728 | ||
b6b38f70 | 4729 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4730 | QFSAttributeRetry: |
4731 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4732 | (void **) &pSMBr); | |
4733 | if (rc) | |
4734 | return rc; | |
4735 | ||
4736 | params = 2; /* level */ | |
4737 | pSMB->TotalDataCount = 0; | |
4738 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4739 | /* BB find exact max SMB PDU from sess structure BB */ |
4740 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4741 | pSMB->MaxSetupCount = 0; |
4742 | pSMB->Reserved = 0; | |
4743 | pSMB->Flags = 0; | |
4744 | pSMB->Timeout = 0; | |
4745 | pSMB->Reserved2 = 0; | |
4746 | byte_count = params + 1 /* pad */ ; | |
4747 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4748 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4749 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4750 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4751 | pSMB->DataCount = 0; |
4752 | pSMB->DataOffset = 0; | |
4753 | pSMB->SetupCount = 1; | |
4754 | pSMB->Reserved3 = 0; | |
4755 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4756 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4757 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4758 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4759 | ||
4760 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4761 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4762 | if (rc) { | |
b6b38f70 | 4763 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4764 | } else { /* decode response */ |
4765 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4766 | ||
820a803f | 4767 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4768 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4769 | rc = -EIO; /* bad smb */ |
4770 | } else { | |
4771 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4772 | response_data = | |
4773 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4774 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4775 | data_offset); | |
4776 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4777 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4778 | } |
4779 | } | |
4780 | cifs_buf_release(pSMB); | |
4781 | ||
4782 | if (rc == -EAGAIN) | |
4783 | goto QFSAttributeRetry; | |
4784 | ||
4785 | return rc; | |
4786 | } | |
4787 | ||
4788 | int | |
96daf2b0 | 4789 | CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4790 | { |
4791 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4792 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4793 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4794 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4795 | int rc = 0; | |
4796 | int bytes_returned = 0; | |
4797 | __u16 params, byte_count; | |
4798 | ||
b6b38f70 | 4799 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4800 | QFSDeviceRetry: |
4801 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4802 | (void **) &pSMBr); | |
4803 | if (rc) | |
4804 | return rc; | |
4805 | ||
4806 | params = 2; /* level */ | |
4807 | pSMB->TotalDataCount = 0; | |
4808 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4809 | /* BB find exact max SMB PDU from sess structure BB */ |
4810 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4811 | pSMB->MaxSetupCount = 0; |
4812 | pSMB->Reserved = 0; | |
4813 | pSMB->Flags = 0; | |
4814 | pSMB->Timeout = 0; | |
4815 | pSMB->Reserved2 = 0; | |
4816 | byte_count = params + 1 /* pad */ ; | |
4817 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4818 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4819 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4820 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4821 | |
4822 | pSMB->DataCount = 0; | |
4823 | pSMB->DataOffset = 0; | |
4824 | pSMB->SetupCount = 1; | |
4825 | pSMB->Reserved3 = 0; | |
4826 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4827 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4828 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4829 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4830 | ||
4831 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4832 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4833 | if (rc) { | |
b6b38f70 | 4834 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4835 | } else { /* decode response */ |
4836 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4837 | ||
820a803f JL |
4838 | if (rc || get_bcc(&pSMBr->hdr) < |
4839 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4840 | rc = -EIO; /* bad smb */ |
4841 | else { | |
4842 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4843 | response_data = | |
737b758c SF |
4844 | (FILE_SYSTEM_DEVICE_INFO *) |
4845 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4846 | data_offset); |
4847 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4848 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4849 | } |
4850 | } | |
4851 | cifs_buf_release(pSMB); | |
4852 | ||
4853 | if (rc == -EAGAIN) | |
4854 | goto QFSDeviceRetry; | |
4855 | ||
4856 | return rc; | |
4857 | } | |
4858 | ||
4859 | int | |
96daf2b0 | 4860 | CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4861 | { |
4862 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4863 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4864 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4865 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4866 | int rc = 0; | |
4867 | int bytes_returned = 0; | |
4868 | __u16 params, byte_count; | |
4869 | ||
b6b38f70 | 4870 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 4871 | QFSUnixRetry: |
f569599a JL |
4872 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4873 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4874 | if (rc) |
4875 | return rc; | |
4876 | ||
4877 | params = 2; /* level */ | |
4878 | pSMB->TotalDataCount = 0; | |
4879 | pSMB->DataCount = 0; | |
4880 | pSMB->DataOffset = 0; | |
4881 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4882 | /* BB find exact max SMB PDU from sess structure BB */ |
4883 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4884 | pSMB->MaxSetupCount = 0; |
4885 | pSMB->Reserved = 0; | |
4886 | pSMB->Flags = 0; | |
4887 | pSMB->Timeout = 0; | |
4888 | pSMB->Reserved2 = 0; | |
4889 | byte_count = params + 1 /* pad */ ; | |
4890 | pSMB->ParameterCount = cpu_to_le16(params); | |
4891 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4892 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4893 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4894 | pSMB->SetupCount = 1; |
4895 | pSMB->Reserved3 = 0; | |
4896 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4897 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4898 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4899 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4900 | ||
4901 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4902 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4903 | if (rc) { | |
b6b38f70 | 4904 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4905 | } else { /* decode response */ |
4906 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4907 | ||
820a803f | 4908 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4909 | rc = -EIO; /* bad smb */ |
4910 | } else { | |
4911 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4912 | response_data = | |
4913 | (FILE_SYSTEM_UNIX_INFO | |
4914 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4915 | data_offset); | |
4916 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4917 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4918 | } |
4919 | } | |
4920 | cifs_buf_release(pSMB); | |
4921 | ||
4922 | if (rc == -EAGAIN) | |
4923 | goto QFSUnixRetry; | |
4924 | ||
4925 | ||
4926 | return rc; | |
4927 | } | |
4928 | ||
ac67055e | 4929 | int |
96daf2b0 | 4930 | CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
4931 | { |
4932 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4933 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4934 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4935 | int rc = 0; | |
4936 | int bytes_returned = 0; | |
4937 | __u16 params, param_offset, offset, byte_count; | |
4938 | ||
b6b38f70 | 4939 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4940 | SETFSUnixRetry: |
f26282c9 | 4941 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4942 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4943 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4944 | if (rc) |
4945 | return rc; | |
4946 | ||
4947 | params = 4; /* 2 bytes zero followed by info level. */ | |
4948 | pSMB->MaxSetupCount = 0; | |
4949 | pSMB->Reserved = 0; | |
4950 | pSMB->Flags = 0; | |
4951 | pSMB->Timeout = 0; | |
4952 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4953 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4954 | - 4; | |
ac67055e JA |
4955 | offset = param_offset + params; |
4956 | ||
4957 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4958 | /* BB find exact max SMB PDU from sess structure BB */ |
4959 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4960 | pSMB->SetupCount = 1; |
4961 | pSMB->Reserved3 = 0; | |
4962 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4963 | byte_count = 1 /* pad */ + params + 12; | |
4964 | ||
4965 | pSMB->DataCount = cpu_to_le16(12); | |
4966 | pSMB->ParameterCount = cpu_to_le16(params); | |
4967 | pSMB->TotalDataCount = pSMB->DataCount; | |
4968 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4969 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4970 | pSMB->DataOffset = cpu_to_le16(offset); | |
4971 | ||
4972 | /* Params. */ | |
4973 | pSMB->FileNum = 0; | |
4974 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4975 | ||
4976 | /* Data. */ | |
4977 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4978 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4979 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4980 | ||
be8e3b00 | 4981 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4982 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4983 | ||
4984 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4985 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4986 | if (rc) { | |
b6b38f70 | 4987 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4988 | } else { /* decode response */ |
4989 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4990 | if (rc) |
ac67055e | 4991 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4992 | } |
4993 | cifs_buf_release(pSMB); | |
4994 | ||
4995 | if (rc == -EAGAIN) | |
4996 | goto SETFSUnixRetry; | |
4997 | ||
4998 | return rc; | |
4999 | } | |
5000 | ||
5001 | ||
1da177e4 LT |
5002 | |
5003 | int | |
96daf2b0 | 5004 | CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon, |
737b758c | 5005 | struct kstatfs *FSData) |
1da177e4 LT |
5006 | { |
5007 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5008 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5009 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5010 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5011 | int rc = 0; | |
5012 | int bytes_returned = 0; | |
5013 | __u16 params, byte_count; | |
5014 | ||
b6b38f70 | 5015 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5016 | QFSPosixRetry: |
5017 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5018 | (void **) &pSMBr); | |
5019 | if (rc) | |
5020 | return rc; | |
5021 | ||
5022 | params = 2; /* level */ | |
5023 | pSMB->TotalDataCount = 0; | |
5024 | pSMB->DataCount = 0; | |
5025 | pSMB->DataOffset = 0; | |
5026 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5027 | /* BB find exact max SMB PDU from sess structure BB */ |
5028 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5029 | pSMB->MaxSetupCount = 0; |
5030 | pSMB->Reserved = 0; | |
5031 | pSMB->Flags = 0; | |
5032 | pSMB->Timeout = 0; | |
5033 | pSMB->Reserved2 = 0; | |
5034 | byte_count = params + 1 /* pad */ ; | |
5035 | pSMB->ParameterCount = cpu_to_le16(params); | |
5036 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5037 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5038 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5039 | pSMB->SetupCount = 1; |
5040 | pSMB->Reserved3 = 0; | |
5041 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5042 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5043 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5044 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5045 | ||
5046 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5047 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5048 | if (rc) { | |
b6b38f70 | 5049 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5050 | } else { /* decode response */ |
5051 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5052 | ||
820a803f | 5053 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5054 | rc = -EIO; /* bad smb */ |
5055 | } else { | |
5056 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5057 | response_data = | |
5058 | (FILE_SYSTEM_POSIX_INFO | |
5059 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5060 | data_offset); | |
5061 | FSData->f_bsize = | |
5062 | le32_to_cpu(response_data->BlockSize); | |
5063 | FSData->f_blocks = | |
5064 | le64_to_cpu(response_data->TotalBlocks); | |
5065 | FSData->f_bfree = | |
5066 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5067 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5068 | FSData->f_bavail = FSData->f_bfree; |
5069 | } else { | |
5070 | FSData->f_bavail = | |
50c2f753 | 5071 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5072 | } |
790fe579 | 5073 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5074 | FSData->f_files = |
50c2f753 | 5075 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5076 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5077 | FSData->f_ffree = |
50c2f753 | 5078 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5079 | } |
5080 | } | |
5081 | cifs_buf_release(pSMB); | |
5082 | ||
5083 | if (rc == -EAGAIN) | |
5084 | goto QFSPosixRetry; | |
5085 | ||
5086 | return rc; | |
5087 | } | |
5088 | ||
5089 | ||
50c2f753 SF |
5090 | /* We can not use write of zero bytes trick to |
5091 | set file size due to need for large file support. Also note that | |
5092 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5093 | routine which is only needed to work around a sharing violation bug |
5094 | in Samba which this routine can run into */ | |
5095 | ||
5096 | int | |
96daf2b0 | 5097 | CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName, |
4b18f2a9 | 5098 | __u64 size, bool SetAllocation, |
737b758c | 5099 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5100 | { |
5101 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5102 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5103 | struct file_end_of_file_info *parm_data; | |
5104 | int name_len; | |
5105 | int rc = 0; | |
5106 | int bytes_returned = 0; | |
5107 | __u16 params, byte_count, data_count, param_offset, offset; | |
5108 | ||
b6b38f70 | 5109 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5110 | SetEOFRetry: |
5111 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5112 | (void **) &pSMBr); | |
5113 | if (rc) | |
5114 | return rc; | |
5115 | ||
5116 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5117 | name_len = | |
b1a45695 | 5118 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5119 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5120 | name_len++; /* trailing null */ |
5121 | name_len *= 2; | |
3e87d803 | 5122 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5123 | name_len = strnlen(fileName, PATH_MAX); |
5124 | name_len++; /* trailing null */ | |
5125 | strncpy(pSMB->FileName, fileName, name_len); | |
5126 | } | |
5127 | params = 6 + name_len; | |
26f57364 | 5128 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5129 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5130 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5131 | pSMB->MaxSetupCount = 0; |
5132 | pSMB->Reserved = 0; | |
5133 | pSMB->Flags = 0; | |
5134 | pSMB->Timeout = 0; | |
5135 | pSMB->Reserved2 = 0; | |
5136 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5137 | InformationLevel) - 4; |
1da177e4 | 5138 | offset = param_offset + params; |
790fe579 | 5139 | if (SetAllocation) { |
50c2f753 SF |
5140 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5141 | pSMB->InformationLevel = | |
5142 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5143 | else | |
5144 | pSMB->InformationLevel = | |
5145 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5146 | } else /* Set File Size */ { | |
1da177e4 LT |
5147 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5148 | pSMB->InformationLevel = | |
50c2f753 | 5149 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5150 | else |
5151 | pSMB->InformationLevel = | |
50c2f753 | 5152 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5153 | } |
5154 | ||
5155 | parm_data = | |
5156 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5157 | offset); | |
5158 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5159 | pSMB->DataOffset = cpu_to_le16(offset); | |
5160 | pSMB->SetupCount = 1; | |
5161 | pSMB->Reserved3 = 0; | |
5162 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5163 | byte_count = 3 /* pad */ + params + data_count; | |
5164 | pSMB->DataCount = cpu_to_le16(data_count); | |
5165 | pSMB->TotalDataCount = pSMB->DataCount; | |
5166 | pSMB->ParameterCount = cpu_to_le16(params); | |
5167 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5168 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5169 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5170 | parm_data->FileSize = cpu_to_le64(size); |
5171 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5172 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5173 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5174 | if (rc) |
b6b38f70 | 5175 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5176 | |
5177 | cifs_buf_release(pSMB); | |
5178 | ||
5179 | if (rc == -EAGAIN) | |
5180 | goto SetEOFRetry; | |
5181 | ||
5182 | return rc; | |
5183 | } | |
5184 | ||
5185 | int | |
96daf2b0 | 5186 | CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size, |
4b18f2a9 | 5187 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5188 | { |
5189 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5190 | struct file_end_of_file_info *parm_data; |
5191 | int rc = 0; | |
1da177e4 LT |
5192 | __u16 params, param_offset, offset, byte_count, count; |
5193 | ||
b6b38f70 JP |
5194 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5195 | (long long)size); | |
cd63499c SF |
5196 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5197 | ||
1da177e4 LT |
5198 | if (rc) |
5199 | return rc; | |
5200 | ||
5201 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5202 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5203 | |
1da177e4 LT |
5204 | params = 6; |
5205 | pSMB->MaxSetupCount = 0; | |
5206 | pSMB->Reserved = 0; | |
5207 | pSMB->Flags = 0; | |
5208 | pSMB->Timeout = 0; | |
5209 | pSMB->Reserved2 = 0; | |
5210 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5211 | offset = param_offset + params; | |
5212 | ||
1da177e4 LT |
5213 | count = sizeof(struct file_end_of_file_info); |
5214 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5215 | /* BB find exact max SMB PDU from sess structure BB */ |
5216 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5217 | pSMB->SetupCount = 1; |
5218 | pSMB->Reserved3 = 0; | |
5219 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5220 | byte_count = 3 /* pad */ + params + count; | |
5221 | pSMB->DataCount = cpu_to_le16(count); | |
5222 | pSMB->ParameterCount = cpu_to_le16(params); | |
5223 | pSMB->TotalDataCount = pSMB->DataCount; | |
5224 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5225 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5226 | parm_data = | |
50c2f753 SF |
5227 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5228 | + offset); | |
1da177e4 LT |
5229 | pSMB->DataOffset = cpu_to_le16(offset); |
5230 | parm_data->FileSize = cpu_to_le64(size); | |
5231 | pSMB->Fid = fid; | |
790fe579 | 5232 | if (SetAllocation) { |
1da177e4 LT |
5233 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5234 | pSMB->InformationLevel = | |
5235 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5236 | else | |
5237 | pSMB->InformationLevel = | |
5238 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5239 | } else /* Set File Size */ { |
1da177e4 LT |
5240 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5241 | pSMB->InformationLevel = | |
50c2f753 | 5242 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5243 | else |
5244 | pSMB->InformationLevel = | |
50c2f753 | 5245 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5246 | } |
5247 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5248 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5249 | pSMB->ByteCount = cpu_to_le16(byte_count); |
133672ef | 5250 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 5251 | if (rc) { |
b6b38f70 | 5252 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5253 | } |
5254 | ||
50c2f753 | 5255 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5256 | since file handle passed in no longer valid */ |
5257 | ||
5258 | return rc; | |
5259 | } | |
5260 | ||
50c2f753 | 5261 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5262 | an open handle, rather than by pathname - this is awkward due to |
5263 | potential access conflicts on the open, but it is unavoidable for these | |
5264 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5265 | time and resort to the original setpathinfo level which takes the ancient | |
5266 | DOS time format with 2 second granularity */ | |
5267 | int | |
96daf2b0 | 5268 | CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5269 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5270 | { |
5271 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5272 | char *data_offset; |
5273 | int rc = 0; | |
1da177e4 LT |
5274 | __u16 params, param_offset, offset, byte_count, count; |
5275 | ||
b6b38f70 | 5276 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5277 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5278 | ||
1da177e4 LT |
5279 | if (rc) |
5280 | return rc; | |
5281 | ||
2dd2dfa0 JL |
5282 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5283 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5284 | |
1da177e4 LT |
5285 | params = 6; |
5286 | pSMB->MaxSetupCount = 0; | |
5287 | pSMB->Reserved = 0; | |
5288 | pSMB->Flags = 0; | |
5289 | pSMB->Timeout = 0; | |
5290 | pSMB->Reserved2 = 0; | |
5291 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5292 | offset = param_offset + params; | |
5293 | ||
50c2f753 | 5294 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 5295 | |
26f57364 | 5296 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5297 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5298 | /* BB find max SMB PDU from sess */ |
5299 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5300 | pSMB->SetupCount = 1; |
5301 | pSMB->Reserved3 = 0; | |
5302 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5303 | byte_count = 3 /* pad */ + params + count; | |
5304 | pSMB->DataCount = cpu_to_le16(count); | |
5305 | pSMB->ParameterCount = cpu_to_le16(params); | |
5306 | pSMB->TotalDataCount = pSMB->DataCount; | |
5307 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5308 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5309 | pSMB->DataOffset = cpu_to_le16(offset); | |
5310 | pSMB->Fid = fid; | |
5311 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5312 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5313 | else | |
5314 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5315 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5316 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5317 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5318 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 5319 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 5320 | if (rc) |
b6b38f70 | 5321 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5322 | |
50c2f753 | 5323 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5324 | since file handle passed in no longer valid */ |
5325 | ||
5326 | return rc; | |
5327 | } | |
5328 | ||
6d22f098 | 5329 | int |
96daf2b0 | 5330 | CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5331 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5332 | { | |
5333 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5334 | char *data_offset; | |
5335 | int rc = 0; | |
5336 | __u16 params, param_offset, offset, byte_count, count; | |
5337 | ||
b6b38f70 | 5338 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5339 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5340 | ||
5341 | if (rc) | |
5342 | return rc; | |
5343 | ||
5344 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5345 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5346 | ||
5347 | params = 6; | |
5348 | pSMB->MaxSetupCount = 0; | |
5349 | pSMB->Reserved = 0; | |
5350 | pSMB->Flags = 0; | |
5351 | pSMB->Timeout = 0; | |
5352 | pSMB->Reserved2 = 0; | |
5353 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5354 | offset = param_offset + params; | |
5355 | ||
5356 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5357 | ||
5358 | count = 1; | |
5359 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5360 | /* BB find max SMB PDU from sess */ | |
5361 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5362 | pSMB->SetupCount = 1; | |
5363 | pSMB->Reserved3 = 0; | |
5364 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5365 | byte_count = 3 /* pad */ + params + count; | |
5366 | pSMB->DataCount = cpu_to_le16(count); | |
5367 | pSMB->ParameterCount = cpu_to_le16(params); | |
5368 | pSMB->TotalDataCount = pSMB->DataCount; | |
5369 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5370 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5371 | pSMB->DataOffset = cpu_to_le16(offset); | |
5372 | pSMB->Fid = fid; | |
5373 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5374 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5375 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5376 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5377 | *data_offset = delete_file ? 1 : 0; | |
5378 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5379 | if (rc) | |
b6b38f70 | 5380 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5381 | |
5382 | return rc; | |
5383 | } | |
1da177e4 LT |
5384 | |
5385 | int | |
96daf2b0 | 5386 | CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5387 | const char *fileName, const FILE_BASIC_INFO *data, |
5388 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5389 | { |
5390 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5391 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5392 | int name_len; | |
5393 | int rc = 0; | |
5394 | int bytes_returned = 0; | |
5395 | char *data_offset; | |
5396 | __u16 params, param_offset, offset, byte_count, count; | |
5397 | ||
b6b38f70 | 5398 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5399 | |
5400 | SetTimesRetry: | |
5401 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5402 | (void **) &pSMBr); | |
5403 | if (rc) | |
5404 | return rc; | |
5405 | ||
5406 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5407 | name_len = | |
b1a45695 | 5408 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5409 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5410 | name_len++; /* trailing null */ |
5411 | name_len *= 2; | |
50c2f753 | 5412 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5413 | name_len = strnlen(fileName, PATH_MAX); |
5414 | name_len++; /* trailing null */ | |
5415 | strncpy(pSMB->FileName, fileName, name_len); | |
5416 | } | |
5417 | ||
5418 | params = 6 + name_len; | |
26f57364 | 5419 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5420 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5421 | /* BB find max SMB PDU from sess structure BB */ |
5422 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5423 | pSMB->MaxSetupCount = 0; |
5424 | pSMB->Reserved = 0; | |
5425 | pSMB->Flags = 0; | |
5426 | pSMB->Timeout = 0; | |
5427 | pSMB->Reserved2 = 0; | |
5428 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5429 | InformationLevel) - 4; |
1da177e4 LT |
5430 | offset = param_offset + params; |
5431 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5432 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5433 | pSMB->DataOffset = cpu_to_le16(offset); | |
5434 | pSMB->SetupCount = 1; | |
5435 | pSMB->Reserved3 = 0; | |
5436 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5437 | byte_count = 3 /* pad */ + params + count; | |
5438 | ||
5439 | pSMB->DataCount = cpu_to_le16(count); | |
5440 | pSMB->ParameterCount = cpu_to_le16(params); | |
5441 | pSMB->TotalDataCount = pSMB->DataCount; | |
5442 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5443 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5444 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5445 | else | |
5446 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5447 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5448 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5449 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5450 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5451 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5452 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5453 | if (rc) |
b6b38f70 | 5454 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5455 | |
5456 | cifs_buf_release(pSMB); | |
5457 | ||
5458 | if (rc == -EAGAIN) | |
5459 | goto SetTimesRetry; | |
5460 | ||
5461 | return rc; | |
5462 | } | |
5463 | ||
5464 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5465 | /* Can be used to set attributes */ | |
5466 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5467 | handling it anyway and NT4 was what we thought it would be needed for | |
5468 | Do not delete it until we prove whether needed for Win9x though */ | |
5469 | int | |
96daf2b0 | 5470 | CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5471 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5472 | { | |
5473 | SETATTR_REQ *pSMB = NULL; | |
5474 | SETATTR_RSP *pSMBr = NULL; | |
5475 | int rc = 0; | |
5476 | int bytes_returned; | |
5477 | int name_len; | |
5478 | ||
b6b38f70 | 5479 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5480 | |
5481 | SetAttrLgcyRetry: | |
5482 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5483 | (void **) &pSMBr); | |
5484 | if (rc) | |
5485 | return rc; | |
5486 | ||
5487 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5488 | name_len = | |
50c2f753 | 5489 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5490 | PATH_MAX, nls_codepage); |
5491 | name_len++; /* trailing null */ | |
5492 | name_len *= 2; | |
50c2f753 | 5493 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5494 | name_len = strnlen(fileName, PATH_MAX); |
5495 | name_len++; /* trailing null */ | |
5496 | strncpy(pSMB->fileName, fileName, name_len); | |
5497 | } | |
5498 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5499 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5500 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5501 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5502 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5503 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5504 | if (rc) |
b6b38f70 | 5505 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5506 | |
5507 | cifs_buf_release(pSMB); | |
5508 | ||
5509 | if (rc == -EAGAIN) | |
5510 | goto SetAttrLgcyRetry; | |
5511 | ||
5512 | return rc; | |
5513 | } | |
5514 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5515 | ||
654cf14a JL |
5516 | static void |
5517 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5518 | const struct cifs_unix_set_info_args *args) | |
5519 | { | |
5520 | u64 mode = args->mode; | |
5521 | ||
5522 | /* | |
5523 | * Samba server ignores set of file size to zero due to bugs in some | |
5524 | * older clients, but we should be precise - we use SetFileSize to | |
5525 | * set file size and do not want to truncate file size to zero | |
25985edc | 5526 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5527 | * zero instead of -1 here |
5528 | */ | |
5529 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5530 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5531 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5532 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5533 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5534 | data_offset->Uid = cpu_to_le64(args->uid); | |
5535 | data_offset->Gid = cpu_to_le64(args->gid); | |
5536 | /* better to leave device as zero when it is */ | |
5537 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5538 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5539 | data_offset->Permissions = cpu_to_le64(mode); | |
5540 | ||
5541 | if (S_ISREG(mode)) | |
5542 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5543 | else if (S_ISDIR(mode)) | |
5544 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5545 | else if (S_ISLNK(mode)) | |
5546 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5547 | else if (S_ISCHR(mode)) | |
5548 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5549 | else if (S_ISBLK(mode)) | |
5550 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5551 | else if (S_ISFIFO(mode)) | |
5552 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5553 | else if (S_ISSOCK(mode)) | |
5554 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5555 | } | |
5556 | ||
3bbeeb3c | 5557 | int |
96daf2b0 | 5558 | CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5559 | const struct cifs_unix_set_info_args *args, |
5560 | u16 fid, u32 pid_of_opener) | |
5561 | { | |
5562 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5563 | FILE_UNIX_BASIC_INFO *data_offset; | |
5564 | int rc = 0; | |
5565 | u16 params, param_offset, offset, byte_count, count; | |
5566 | ||
b6b38f70 | 5567 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5568 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5569 | ||
5570 | if (rc) | |
5571 | return rc; | |
5572 | ||
5573 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5574 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5575 | ||
5576 | params = 6; | |
5577 | pSMB->MaxSetupCount = 0; | |
5578 | pSMB->Reserved = 0; | |
5579 | pSMB->Flags = 0; | |
5580 | pSMB->Timeout = 0; | |
5581 | pSMB->Reserved2 = 0; | |
5582 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5583 | offset = param_offset + params; | |
5584 | ||
5585 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5586 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5587 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5588 | ||
5589 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5590 | /* BB find max SMB PDU from sess */ | |
5591 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5592 | pSMB->SetupCount = 1; | |
5593 | pSMB->Reserved3 = 0; | |
5594 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5595 | byte_count = 3 /* pad */ + params + count; | |
5596 | pSMB->DataCount = cpu_to_le16(count); | |
5597 | pSMB->ParameterCount = cpu_to_le16(params); | |
5598 | pSMB->TotalDataCount = pSMB->DataCount; | |
5599 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5600 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5601 | pSMB->DataOffset = cpu_to_le16(offset); | |
5602 | pSMB->Fid = fid; | |
5603 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5604 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5605 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5606 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5607 | ||
5608 | cifs_fill_unix_set_info(data_offset, args); | |
5609 | ||
5610 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5611 | if (rc) | |
b6b38f70 | 5612 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5613 | |
5614 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5615 | since file handle passed in no longer valid */ | |
5616 | ||
5617 | return rc; | |
5618 | } | |
5619 | ||
1da177e4 | 5620 | int |
96daf2b0 | 5621 | CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName, |
01ea95e3 JL |
5622 | const struct cifs_unix_set_info_args *args, |
5623 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5624 | { |
5625 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5626 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5627 | int name_len; | |
5628 | int rc = 0; | |
5629 | int bytes_returned = 0; | |
5630 | FILE_UNIX_BASIC_INFO *data_offset; | |
5631 | __u16 params, param_offset, offset, count, byte_count; | |
5632 | ||
b6b38f70 | 5633 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5634 | setPermsRetry: |
5635 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5636 | (void **) &pSMBr); | |
5637 | if (rc) | |
5638 | return rc; | |
5639 | ||
5640 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5641 | name_len = | |
50c2f753 | 5642 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5643 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5644 | name_len++; /* trailing null */ |
5645 | name_len *= 2; | |
3e87d803 | 5646 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5647 | name_len = strnlen(fileName, PATH_MAX); |
5648 | name_len++; /* trailing null */ | |
5649 | strncpy(pSMB->FileName, fileName, name_len); | |
5650 | } | |
5651 | ||
5652 | params = 6 + name_len; | |
26f57364 | 5653 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5654 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5655 | /* BB find max SMB PDU from sess structure BB */ |
5656 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5657 | pSMB->MaxSetupCount = 0; |
5658 | pSMB->Reserved = 0; | |
5659 | pSMB->Flags = 0; | |
5660 | pSMB->Timeout = 0; | |
5661 | pSMB->Reserved2 = 0; | |
5662 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5663 | InformationLevel) - 4; |
1da177e4 LT |
5664 | offset = param_offset + params; |
5665 | data_offset = | |
5666 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5667 | offset); | |
5668 | memset(data_offset, 0, count); | |
5669 | pSMB->DataOffset = cpu_to_le16(offset); | |
5670 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5671 | pSMB->SetupCount = 1; | |
5672 | pSMB->Reserved3 = 0; | |
5673 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5674 | byte_count = 3 /* pad */ + params + count; | |
5675 | pSMB->ParameterCount = cpu_to_le16(params); | |
5676 | pSMB->DataCount = cpu_to_le16(count); | |
5677 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5678 | pSMB->TotalDataCount = pSMB->DataCount; | |
5679 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5680 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5681 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5682 | |
654cf14a | 5683 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5684 | |
5685 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5686 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5687 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5688 | if (rc) |
b6b38f70 | 5689 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5690 | |
0d817bc0 | 5691 | cifs_buf_release(pSMB); |
1da177e4 LT |
5692 | if (rc == -EAGAIN) |
5693 | goto setPermsRetry; | |
5694 | return rc; | |
5695 | } | |
5696 | ||
1da177e4 | 5697 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5698 | /* |
5699 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5700 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5701 | * it looks for that attribute name and stuffs that value into the EAData | |
5702 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5703 | * buffer. In both cases, the return value is either the length of the | |
5704 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5705 | * the data isn't copied to it, but the length is returned. | |
5706 | */ | |
1da177e4 | 5707 | ssize_t |
96daf2b0 | 5708 | CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon, |
31c0519f JL |
5709 | const unsigned char *searchName, const unsigned char *ea_name, |
5710 | char *EAData, size_t buf_size, | |
5711 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5712 | { |
5713 | /* BB assumes one setup word */ | |
5714 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5715 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5716 | int rc = 0; | |
5717 | int bytes_returned; | |
6e462b9f | 5718 | int list_len; |
f0d3868b | 5719 | struct fealist *ea_response_data; |
50c2f753 SF |
5720 | struct fea *temp_fea; |
5721 | char *temp_ptr; | |
0cd126b5 | 5722 | char *end_of_smb; |
f0d3868b | 5723 | __u16 params, byte_count, data_offset; |
5980fc96 | 5724 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 5725 | |
b6b38f70 | 5726 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5727 | QAllEAsRetry: |
5728 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5729 | (void **) &pSMBr); | |
5730 | if (rc) | |
5731 | return rc; | |
5732 | ||
5733 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5734 | list_len = |
50c2f753 | 5735 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5736 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5737 | list_len++; /* trailing null */ |
5738 | list_len *= 2; | |
1da177e4 | 5739 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5740 | list_len = strnlen(searchName, PATH_MAX); |
5741 | list_len++; /* trailing null */ | |
5742 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5743 | } |
5744 | ||
6e462b9f | 5745 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5746 | pSMB->TotalDataCount = 0; |
5747 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5748 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5749 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5750 | pSMB->MaxSetupCount = 0; |
5751 | pSMB->Reserved = 0; | |
5752 | pSMB->Flags = 0; | |
5753 | pSMB->Timeout = 0; | |
5754 | pSMB->Reserved2 = 0; | |
5755 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5756 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5757 | pSMB->DataCount = 0; |
5758 | pSMB->DataOffset = 0; | |
5759 | pSMB->SetupCount = 1; | |
5760 | pSMB->Reserved3 = 0; | |
5761 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5762 | byte_count = params + 1 /* pad */ ; | |
5763 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5764 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5765 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5766 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5767 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5768 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5769 | ||
5770 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5771 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5772 | if (rc) { | |
b6b38f70 | 5773 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5774 | goto QAllEAsOut; |
5775 | } | |
1da177e4 | 5776 | |
f0d3868b JL |
5777 | |
5778 | /* BB also check enough total bytes returned */ | |
5779 | /* BB we need to improve the validity checking | |
5780 | of these trans2 responses */ | |
5781 | ||
5782 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5783 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5784 | rc = -EIO; /* bad smb */ |
5785 | goto QAllEAsOut; | |
5786 | } | |
5787 | ||
5788 | /* check that length of list is not more than bcc */ | |
5789 | /* check that each entry does not go beyond length | |
5790 | of list */ | |
5791 | /* check that each element of each entry does not | |
5792 | go beyond end of list */ | |
5793 | /* validate_trans2_offsets() */ | |
5794 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5795 | ||
5796 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5797 | ea_response_data = (struct fealist *) | |
5798 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5799 | ||
6e462b9f | 5800 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5801 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5802 | if (list_len <= 8) { |
b6b38f70 | 5803 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5804 | goto QAllEAsOut; |
5805 | } | |
5806 | ||
0cd126b5 | 5807 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5808 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5809 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 5810 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5811 | rc = -EIO; |
5812 | goto QAllEAsOut; | |
5813 | } | |
5814 | ||
f0d3868b | 5815 | /* account for ea list len */ |
6e462b9f | 5816 | list_len -= 4; |
f0d3868b JL |
5817 | temp_fea = ea_response_data->list; |
5818 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5819 | while (list_len > 0) { |
122ca007 | 5820 | unsigned int name_len; |
f0d3868b | 5821 | __u16 value_len; |
0cd126b5 | 5822 | |
6e462b9f | 5823 | list_len -= 4; |
f0d3868b | 5824 | temp_ptr += 4; |
0cd126b5 JL |
5825 | /* make sure we can read name_len and value_len */ |
5826 | if (list_len < 0) { | |
b6b38f70 | 5827 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5828 | rc = -EIO; |
5829 | goto QAllEAsOut; | |
5830 | } | |
5831 | ||
5832 | name_len = temp_fea->name_len; | |
5833 | value_len = le16_to_cpu(temp_fea->value_len); | |
5834 | list_len -= name_len + 1 + value_len; | |
5835 | if (list_len < 0) { | |
b6b38f70 | 5836 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5837 | rc = -EIO; |
5838 | goto QAllEAsOut; | |
5839 | } | |
5840 | ||
31c0519f | 5841 | if (ea_name) { |
91d065c4 JL |
5842 | if (ea_name_len == name_len && |
5843 | strncmp(ea_name, temp_ptr, name_len) == 0) { | |
31c0519f JL |
5844 | temp_ptr += name_len + 1; |
5845 | rc = value_len; | |
5846 | if (buf_size == 0) | |
5847 | goto QAllEAsOut; | |
5848 | if ((size_t)value_len > buf_size) { | |
5849 | rc = -ERANGE; | |
5850 | goto QAllEAsOut; | |
5851 | } | |
5852 | memcpy(EAData, temp_ptr, value_len); | |
5853 | goto QAllEAsOut; | |
5854 | } | |
f0d3868b | 5855 | } else { |
31c0519f JL |
5856 | /* account for prefix user. and trailing null */ |
5857 | rc += (5 + 1 + name_len); | |
5858 | if (rc < (int) buf_size) { | |
5859 | memcpy(EAData, "user.", 5); | |
5860 | EAData += 5; | |
5861 | memcpy(EAData, temp_ptr, name_len); | |
5862 | EAData += name_len; | |
5863 | /* null terminate name */ | |
5864 | *EAData = 0; | |
5865 | ++EAData; | |
5866 | } else if (buf_size == 0) { | |
5867 | /* skip copy - calc size only */ | |
5868 | } else { | |
5869 | /* stop before overrun buffer */ | |
5870 | rc = -ERANGE; | |
5871 | break; | |
5872 | } | |
1da177e4 | 5873 | } |
0cd126b5 | 5874 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5875 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5876 | } |
f0d3868b | 5877 | |
31c0519f JL |
5878 | /* didn't find the named attribute */ |
5879 | if (ea_name) | |
5880 | rc = -ENODATA; | |
5881 | ||
f0d3868b | 5882 | QAllEAsOut: |
0d817bc0 | 5883 | cifs_buf_release(pSMB); |
1da177e4 LT |
5884 | if (rc == -EAGAIN) |
5885 | goto QAllEAsRetry; | |
5886 | ||
5887 | return (ssize_t)rc; | |
5888 | } | |
5889 | ||
1da177e4 | 5890 | int |
96daf2b0 | 5891 | CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName, |
50c2f753 SF |
5892 | const char *ea_name, const void *ea_value, |
5893 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5894 | int remap) | |
1da177e4 LT |
5895 | { |
5896 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5897 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5898 | struct fealist *parm_data; | |
5899 | int name_len; | |
5900 | int rc = 0; | |
5901 | int bytes_returned = 0; | |
5902 | __u16 params, param_offset, byte_count, offset, count; | |
5903 | ||
b6b38f70 | 5904 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5905 | SetEARetry: |
5906 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5907 | (void **) &pSMBr); | |
5908 | if (rc) | |
5909 | return rc; | |
5910 | ||
5911 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5912 | name_len = | |
50c2f753 | 5913 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5914 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5915 | name_len++; /* trailing null */ |
5916 | name_len *= 2; | |
50c2f753 | 5917 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5918 | name_len = strnlen(fileName, PATH_MAX); |
5919 | name_len++; /* trailing null */ | |
5920 | strncpy(pSMB->FileName, fileName, name_len); | |
5921 | } | |
5922 | ||
5923 | params = 6 + name_len; | |
5924 | ||
5925 | /* done calculating parms using name_len of file name, | |
5926 | now use name_len to calculate length of ea name | |
5927 | we are going to create in the inode xattrs */ | |
790fe579 | 5928 | if (ea_name == NULL) |
1da177e4 LT |
5929 | name_len = 0; |
5930 | else | |
50c2f753 | 5931 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5932 | |
dae5dbdb | 5933 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5934 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5935 | /* BB find max SMB PDU from sess */ |
5936 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5937 | pSMB->MaxSetupCount = 0; |
5938 | pSMB->Reserved = 0; | |
5939 | pSMB->Flags = 0; | |
5940 | pSMB->Timeout = 0; | |
5941 | pSMB->Reserved2 = 0; | |
5942 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5943 | InformationLevel) - 4; |
1da177e4 LT |
5944 | offset = param_offset + params; |
5945 | pSMB->InformationLevel = | |
5946 | cpu_to_le16(SMB_SET_FILE_EA); | |
5947 | ||
5948 | parm_data = | |
5949 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5950 | offset); | |
5951 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5952 | pSMB->DataOffset = cpu_to_le16(offset); | |
5953 | pSMB->SetupCount = 1; | |
5954 | pSMB->Reserved3 = 0; | |
5955 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5956 | byte_count = 3 /* pad */ + params + count; | |
5957 | pSMB->DataCount = cpu_to_le16(count); | |
5958 | parm_data->list_len = cpu_to_le32(count); | |
5959 | parm_data->list[0].EA_flags = 0; | |
5960 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5961 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5962 | /* EA names are always ASCII */ |
790fe579 | 5963 | if (ea_name) |
50c2f753 | 5964 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5965 | parm_data->list[0].name[name_len] = 0; |
5966 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5967 | /* caller ensures that ea_value_len is less than 64K but | |
5968 | we need to ensure that it fits within the smb */ | |
5969 | ||
50c2f753 SF |
5970 | /*BB add length check to see if it would fit in |
5971 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5972 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5973 | if (ea_value_len) | |
50c2f753 SF |
5974 | memcpy(parm_data->list[0].name+name_len+1, |
5975 | ea_value, ea_value_len); | |
1da177e4 LT |
5976 | |
5977 | pSMB->TotalDataCount = pSMB->DataCount; | |
5978 | pSMB->ParameterCount = cpu_to_le16(params); | |
5979 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5980 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5981 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5982 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5983 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5984 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5985 | if (rc) |
b6b38f70 | 5986 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5987 | |
5988 | cifs_buf_release(pSMB); | |
5989 | ||
5990 | if (rc == -EAGAIN) | |
5991 | goto SetEARetry; | |
5992 | ||
5993 | return rc; | |
5994 | } | |
1da177e4 | 5995 | #endif |
0eff0e26 SF |
5996 | |
5997 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
5998 | /* | |
5999 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6000 | * to allow network clients (such as Windows) to display updated | |
6001 | * lists of files in directory listings automatically when | |
6002 | * files are added by one user when another user has the | |
6003 | * same directory open on their desktop. The Linux cifs kernel | |
6004 | * client hooked into the kernel side of this interface for | |
6005 | * the same reason, but ironically when the VFS moved from | |
6006 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6007 | * network file system clients (the most obvious use case | |
6008 | * for notify interfaces is when multiple users can update | |
6009 | * the contents of the same directory - exactly what network | |
6010 | * file systems can do) although the server (Samba) could | |
6011 | * still use it. For the short term we leave the worker | |
6012 | * function ifdeffed out (below) until inotify is fixed | |
6013 | * in the VFS to make it easier to plug in network file | |
6014 | * system clients. If inotify turns out to be permanently | |
6015 | * incompatible for network fs clients, we could instead simply | |
6016 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6017 | */ | |
96daf2b0 | 6018 | int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6019 | const int notify_subdirs, const __u16 netfid, |
6020 | __u32 filter, struct file *pfile, int multishot, | |
6021 | const struct nls_table *nls_codepage) | |
6022 | { | |
6023 | int rc = 0; | |
6024 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6025 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6026 | struct dir_notify_req *dnotify_req; | |
6027 | int bytes_returned; | |
6028 | ||
6029 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6030 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6031 | (void **) &pSMBr); | |
6032 | if (rc) | |
6033 | return rc; | |
6034 | ||
6035 | pSMB->TotalParameterCount = 0 ; | |
6036 | pSMB->TotalDataCount = 0; | |
6037 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
6038 | /* BB find exact data count max from sess structure BB */ | |
6039 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
6040 | /* BB VERIFY verify which is correct for above BB */ | |
6041 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
6042 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
6043 | ||
6044 | pSMB->MaxSetupCount = 4; | |
6045 | pSMB->Reserved = 0; | |
6046 | pSMB->ParameterOffset = 0; | |
6047 | pSMB->DataCount = 0; | |
6048 | pSMB->DataOffset = 0; | |
6049 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6050 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6051 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6052 | if (notify_subdirs) | |
6053 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6054 | pSMB->Reserved2 = 0; | |
6055 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6056 | pSMB->Fid = netfid; /* file handle always le */ | |
6057 | pSMB->ByteCount = 0; | |
6058 | ||
6059 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6060 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6061 | CIFS_ASYNC_OP); | |
6062 | if (rc) { | |
6063 | cFYI(1, "Error in Notify = %d", rc); | |
6064 | } else { | |
6065 | /* Add file to outstanding requests */ | |
6066 | /* BB change to kmem cache alloc */ | |
6067 | dnotify_req = kmalloc( | |
6068 | sizeof(struct dir_notify_req), | |
6069 | GFP_KERNEL); | |
6070 | if (dnotify_req) { | |
6071 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6072 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6073 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6074 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6075 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6076 | dnotify_req->netfid = netfid; | |
6077 | dnotify_req->pfile = pfile; | |
6078 | dnotify_req->filter = filter; | |
6079 | dnotify_req->multishot = multishot; | |
6080 | spin_lock(&GlobalMid_Lock); | |
6081 | list_add_tail(&dnotify_req->lhead, | |
6082 | &GlobalDnotifyReqList); | |
6083 | spin_unlock(&GlobalMid_Lock); | |
6084 | } else | |
6085 | rc = -ENOMEM; | |
6086 | } | |
6087 | cifs_buf_release(pSMB); | |
6088 | return rc; | |
6089 | } | |
6090 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |