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 | 455 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); |
c974befa | 456 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
eca6acf9 | 457 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
458 | /* even though we do not use raw we might as well set this |
459 | accurately, in case we ever find a need for it */ | |
790fe579 | 460 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 461 | server->max_rw = 0xFF00; |
254e55ed SF |
462 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
463 | } else { | |
eca6acf9 | 464 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
465 | server->capabilities = CAP_MPX_MODE; |
466 | } | |
b815f1e5 | 467 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 468 | if (tmp == -1) { |
25ee4a98 SF |
469 | /* OS/2 often does not set timezone therefore |
470 | * we must use server time to calc time zone. | |
b815f1e5 SF |
471 | * Could deviate slightly from the right zone. |
472 | * Smallest defined timezone difference is 15 minutes | |
473 | * (i.e. Nepal). Rounding up/down is done to match | |
474 | * this requirement. | |
25ee4a98 | 475 | */ |
b815f1e5 | 476 | int val, seconds, remain, result; |
25ee4a98 SF |
477 | struct timespec ts, utc; |
478 | utc = CURRENT_TIME; | |
c4a2c08d JL |
479 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
480 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 481 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 482 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 483 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 484 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 485 | seconds = abs(val); |
947a5067 | 486 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 487 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 488 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 489 | result += MIN_TZ_ADJ; |
790fe579 | 490 | if (val < 0) |
ad7a2926 | 491 | result = -result; |
b815f1e5 | 492 | server->timeAdj = result; |
25ee4a98 | 493 | } else { |
b815f1e5 SF |
494 | server->timeAdj = (int)tmp; |
495 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 496 | } |
b6b38f70 | 497 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 498 | |
3979877e | 499 | |
254e55ed | 500 | /* BB get server time for time conversions and add |
50c2f753 | 501 | code to use it and timezone since this is not UTC */ |
3979877e | 502 | |
50c2f753 | 503 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 504 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 505 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 506 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 507 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
508 | rc = -EIO; /* need cryptkey unless plain text */ |
509 | goto neg_err_exit; | |
510 | } | |
3979877e | 511 | |
f19159dc | 512 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
513 | /* we will not end up setting signing flags - as no signing |
514 | was in LANMAN and server did not return the flags on */ | |
515 | goto signing_check; | |
7c7b25bc | 516 | #else /* weak security disabled */ |
790fe579 | 517 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
518 | cERROR(1, "mount failed, cifs module not built " |
519 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 520 | rc = -EOPNOTSUPP; |
7c7b25bc | 521 | #endif /* WEAK_PW_HASH */ |
254e55ed | 522 | goto neg_err_exit; |
790fe579 | 523 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
524 | /* unknown wct */ |
525 | rc = -EOPNOTSUPP; | |
526 | goto neg_err_exit; | |
527 | } | |
528 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
529 | server->sec_mode = pSMBr->SecurityMode; |
530 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 531 | cFYI(1, "share mode security"); |
bdc4bf6e | 532 | |
96daf2b0 | 533 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 534 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 535 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 536 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
537 | cERROR(1, "Server requests plain text password" |
538 | " but client support disabled"); | |
9312f675 | 539 | |
790fe579 | 540 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 541 | server->secType = NTLMv2; |
790fe579 | 542 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 543 | server->secType = NTLM; |
790fe579 | 544 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 545 | server->secType = NTLMv2; |
a013689d SF |
546 | else if (secFlags & CIFSSEC_MAY_KRB5) |
547 | server->secType = Kerberos; | |
ac683924 | 548 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 549 | server->secType = RawNTLMSSP; |
a013689d SF |
550 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
551 | server->secType = LANMAN; | |
a013689d SF |
552 | else { |
553 | rc = -EOPNOTSUPP; | |
b6b38f70 | 554 | cERROR(1, "Invalid security type"); |
a013689d SF |
555 | goto neg_err_exit; |
556 | } | |
557 | /* else ... any others ...? */ | |
254e55ed SF |
558 | |
559 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
560 | little endian */ | |
561 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
562 | /* probably no need to store and check maxvcs */ | |
c974befa | 563 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 564 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 565 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 566 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
567 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
568 | server->timeAdj *= 60; | |
254e55ed | 569 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 570 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 571 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
572 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
573 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
574 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 575 | /* decode security blob */ |
820a803f | 576 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 577 | if (count < 16) { |
254e55ed | 578 | rc = -EIO; |
e187e44e JL |
579 | goto neg_err_exit; |
580 | } | |
3f9bcca7 | 581 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 582 | if (server->srv_count > 1) { |
3f9bcca7 | 583 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
584 | if (memcmp(server->server_GUID, |
585 | pSMBr->u.extended_response. | |
586 | GUID, 16) != 0) { | |
b6b38f70 | 587 | cFYI(1, "server UID changed"); |
254e55ed | 588 | memcpy(server->server_GUID, |
e187e44e JL |
589 | pSMBr->u.extended_response.GUID, |
590 | 16); | |
591 | } | |
e7ddee90 | 592 | } else { |
3f9bcca7 | 593 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
594 | memcpy(server->server_GUID, |
595 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 596 | } |
e187e44e JL |
597 | |
598 | if (count == 16) { | |
599 | server->secType = RawNTLMSSP; | |
254e55ed SF |
600 | } else { |
601 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
602 | SecurityBlob, count - 16, |
603 | server); | |
ef571cad | 604 | if (rc == 1) |
e545937a | 605 | rc = 0; |
ef571cad | 606 | else |
254e55ed | 607 | rc = -EINVAL; |
2b149f11 SP |
608 | if (server->secType == Kerberos) { |
609 | if (!server->sec_kerberos && | |
610 | !server->sec_mskerberos) | |
611 | rc = -EOPNOTSUPP; | |
612 | } else if (server->secType == RawNTLMSSP) { | |
613 | if (!server->sec_ntlmssp) | |
614 | rc = -EOPNOTSUPP; | |
615 | } else | |
616 | rc = -EOPNOTSUPP; | |
1da177e4 | 617 | } |
96daf2b0 | 618 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
619 | rc = -EIO; /* no crypt key only if plain text pwd */ |
620 | goto neg_err_exit; | |
254e55ed SF |
621 | } else |
622 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
623 | ||
6344a423 | 624 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 625 | signing_check: |
6344a423 | 626 | #endif |
762e5ab7 SF |
627 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
628 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
629 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 630 | cFYI(1, "Signing disabled"); |
96daf2b0 | 631 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 632 | cERROR(1, "Server requires " |
7111d214 | 633 | "packet signing to be enabled in " |
b6b38f70 | 634 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
635 | rc = -EOPNOTSUPP; |
636 | } | |
96daf2b0 | 637 | server->sec_mode &= |
254e55ed | 638 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
639 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
640 | /* signing required */ | |
b6b38f70 | 641 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 642 | if ((server->sec_mode & |
762e5ab7 | 643 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 644 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 645 | rc = -EOPNOTSUPP; |
762e5ab7 | 646 | } else |
96daf2b0 | 647 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
648 | } else { |
649 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
650 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
651 | server->sec_mode &= | |
254e55ed | 652 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 653 | } |
50c2f753 SF |
654 | |
655 | neg_err_exit: | |
4a6d87f1 | 656 | cifs_buf_release(pSMB); |
254e55ed | 657 | |
b6b38f70 | 658 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
659 | return rc; |
660 | } | |
661 | ||
662 | int | |
96daf2b0 | 663 | CIFSSMBTDis(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
664 | { |
665 | struct smb_hdr *smb_buffer; | |
1da177e4 | 666 | int rc = 0; |
1da177e4 | 667 | |
b6b38f70 | 668 | cFYI(1, "In tree disconnect"); |
1da177e4 | 669 | |
f1987b44 JL |
670 | /* BB: do we need to check this? These should never be NULL. */ |
671 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
672 | return -EIO; | |
1da177e4 | 673 | |
f1987b44 JL |
674 | /* |
675 | * No need to return error on this operation if tid invalidated and | |
676 | * closed on server already e.g. due to tcp session crashing. Also, | |
677 | * the tcon is no longer on the list, so no need to take lock before | |
678 | * checking this. | |
679 | */ | |
268875b9 | 680 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 681 | return 0; |
1da177e4 | 682 | |
50c2f753 | 683 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 684 | (void **)&smb_buffer); |
f1987b44 | 685 | if (rc) |
1da177e4 | 686 | return rc; |
133672ef SF |
687 | |
688 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 689 | if (rc) |
b6b38f70 | 690 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 691 | |
50c2f753 | 692 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 693 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
694 | if (rc == -EAGAIN) |
695 | rc = 0; | |
696 | ||
697 | return rc; | |
698 | } | |
699 | ||
766fdbb5 JL |
700 | /* |
701 | * This is a no-op for now. We're not really interested in the reply, but | |
702 | * rather in the fact that the server sent one and that server->lstrp | |
703 | * gets updated. | |
704 | * | |
705 | * FIXME: maybe we should consider checking that the reply matches request? | |
706 | */ | |
707 | static void | |
708 | cifs_echo_callback(struct mid_q_entry *mid) | |
709 | { | |
710 | struct TCP_Server_Info *server = mid->callback_data; | |
711 | ||
712 | DeleteMidQEntry(mid); | |
713 | atomic_dec(&server->inFlight); | |
714 | wake_up(&server->request_q); | |
715 | } | |
716 | ||
717 | int | |
718 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
719 | { | |
720 | ECHO_REQ *smb; | |
721 | int rc = 0; | |
fcc31cb6 | 722 | struct kvec iov; |
766fdbb5 JL |
723 | |
724 | cFYI(1, "In echo request"); | |
725 | ||
726 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
727 | if (rc) | |
728 | return rc; | |
729 | ||
730 | /* set up echo request */ | |
5443d130 | 731 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
732 | smb->hdr.WordCount = 1; |
733 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 734 | put_bcc(1, &smb->hdr); |
766fdbb5 | 735 | smb->Data[0] = 'a'; |
be8e3b00 | 736 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
737 | iov.iov_base = smb; |
738 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 739 | |
44d22d84 JL |
740 | rc = cifs_call_async(server, &iov, 1, NULL, cifs_echo_callback, |
741 | server, true); | |
766fdbb5 JL |
742 | if (rc) |
743 | cFYI(1, "Echo request failed: %d", rc); | |
744 | ||
745 | cifs_small_buf_release(smb); | |
746 | ||
747 | return rc; | |
748 | } | |
749 | ||
1da177e4 | 750 | int |
96daf2b0 | 751 | CIFSSMBLogoff(const int xid, struct cifs_ses *ses) |
1da177e4 | 752 | { |
1da177e4 LT |
753 | LOGOFF_ANDX_REQ *pSMB; |
754 | int rc = 0; | |
1da177e4 | 755 | |
b6b38f70 | 756 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 757 | |
14fbf50d JL |
758 | /* |
759 | * BB: do we need to check validity of ses and server? They should | |
760 | * always be valid since we have an active reference. If not, that | |
761 | * should probably be a BUG() | |
762 | */ | |
763 | if (!ses || !ses->server) | |
3b795210 SF |
764 | return -EIO; |
765 | ||
d7b619cf | 766 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
767 | if (ses->need_reconnect) |
768 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
769 | already closed due to reconnect */ | |
1da177e4 LT |
770 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
771 | if (rc) { | |
d7b619cf | 772 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
773 | return rc; |
774 | } | |
775 | ||
3b795210 | 776 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 777 | |
96daf2b0 | 778 | if (ses->server->sec_mode & |
1da177e4 LT |
779 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
780 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
781 | |
782 | pSMB->hdr.Uid = ses->Suid; | |
783 | ||
784 | pSMB->AndXCommand = 0xFF; | |
133672ef | 785 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 786 | session_already_dead: |
d7b619cf | 787 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
788 | |
789 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 790 | since server closed smb session, no sense reporting |
1da177e4 LT |
791 | error */ |
792 | if (rc == -EAGAIN) | |
793 | rc = 0; | |
794 | return rc; | |
795 | } | |
796 | ||
2d785a50 | 797 | int |
96daf2b0 | 798 | CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
2d785a50 SF |
799 | __u16 type, const struct nls_table *nls_codepage, int remap) |
800 | { | |
801 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
802 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
803 | struct unlink_psx_rq *pRqD; | |
804 | int name_len; | |
805 | int rc = 0; | |
806 | int bytes_returned = 0; | |
807 | __u16 params, param_offset, offset, byte_count; | |
808 | ||
b6b38f70 | 809 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
810 | PsxDelete: |
811 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
812 | (void **) &pSMBr); | |
813 | if (rc) | |
814 | return rc; | |
815 | ||
816 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
817 | name_len = | |
818 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
819 | PATH_MAX, nls_codepage, remap); | |
820 | name_len++; /* trailing null */ | |
821 | name_len *= 2; | |
822 | } else { /* BB add path length overrun check */ | |
823 | name_len = strnlen(fileName, PATH_MAX); | |
824 | name_len++; /* trailing null */ | |
825 | strncpy(pSMB->FileName, fileName, name_len); | |
826 | } | |
827 | ||
828 | params = 6 + name_len; | |
829 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
830 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
831 | pSMB->MaxSetupCount = 0; | |
832 | pSMB->Reserved = 0; | |
833 | pSMB->Flags = 0; | |
834 | pSMB->Timeout = 0; | |
835 | pSMB->Reserved2 = 0; | |
836 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
837 | InformationLevel) - 4; | |
838 | offset = param_offset + params; | |
839 | ||
840 | /* Setup pointer to Request Data (inode type) */ | |
841 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
842 | pRqD->type = cpu_to_le16(type); | |
843 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
844 | pSMB->DataOffset = cpu_to_le16(offset); | |
845 | pSMB->SetupCount = 1; | |
846 | pSMB->Reserved3 = 0; | |
847 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
848 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
849 | ||
850 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
851 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
852 | pSMB->ParameterCount = cpu_to_le16(params); | |
853 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
854 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
855 | pSMB->Reserved4 = 0; | |
be8e3b00 | 856 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
857 | pSMB->ByteCount = cpu_to_le16(byte_count); |
858 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
859 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 860 | if (rc) |
b6b38f70 | 861 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
862 | cifs_buf_release(pSMB); |
863 | ||
864 | cifs_stats_inc(&tcon->num_deletes); | |
865 | ||
866 | if (rc == -EAGAIN) | |
867 | goto PsxDelete; | |
868 | ||
869 | return rc; | |
870 | } | |
871 | ||
1da177e4 | 872 | int |
96daf2b0 | 873 | CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
737b758c | 874 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
875 | { |
876 | DELETE_FILE_REQ *pSMB = NULL; | |
877 | DELETE_FILE_RSP *pSMBr = NULL; | |
878 | int rc = 0; | |
879 | int bytes_returned; | |
880 | int name_len; | |
881 | ||
882 | DelFileRetry: | |
883 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
884 | (void **) &pSMBr); | |
885 | if (rc) | |
886 | return rc; | |
887 | ||
888 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
889 | name_len = | |
50c2f753 | 890 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 891 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
892 | name_len++; /* trailing null */ |
893 | name_len *= 2; | |
09d1db5c | 894 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
895 | name_len = strnlen(fileName, PATH_MAX); |
896 | name_len++; /* trailing null */ | |
897 | strncpy(pSMB->fileName, fileName, name_len); | |
898 | } | |
899 | pSMB->SearchAttributes = | |
900 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
901 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 902 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
903 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
904 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
905 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 906 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 907 | if (rc) |
b6b38f70 | 908 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
909 | |
910 | cifs_buf_release(pSMB); | |
911 | if (rc == -EAGAIN) | |
912 | goto DelFileRetry; | |
913 | ||
914 | return rc; | |
915 | } | |
916 | ||
917 | int | |
96daf2b0 | 918 | CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName, |
737b758c | 919 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
920 | { |
921 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
922 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
923 | int rc = 0; | |
924 | int bytes_returned; | |
925 | int name_len; | |
926 | ||
b6b38f70 | 927 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
928 | RmDirRetry: |
929 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
930 | (void **) &pSMBr); | |
931 | if (rc) | |
932 | return rc; | |
933 | ||
934 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
935 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
936 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
937 | name_len++; /* trailing null */ |
938 | name_len *= 2; | |
09d1db5c | 939 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
940 | name_len = strnlen(dirName, PATH_MAX); |
941 | name_len++; /* trailing null */ | |
942 | strncpy(pSMB->DirName, dirName, name_len); | |
943 | } | |
944 | ||
945 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 946 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
947 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
948 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
949 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 950 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 951 | if (rc) |
b6b38f70 | 952 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
953 | |
954 | cifs_buf_release(pSMB); | |
955 | if (rc == -EAGAIN) | |
956 | goto RmDirRetry; | |
957 | return rc; | |
958 | } | |
959 | ||
960 | int | |
96daf2b0 | 961 | CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon, |
737b758c | 962 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
963 | { |
964 | int rc = 0; | |
965 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
966 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
967 | int bytes_returned; | |
968 | int name_len; | |
969 | ||
b6b38f70 | 970 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
971 | MkDirRetry: |
972 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
973 | (void **) &pSMBr); | |
974 | if (rc) | |
975 | return rc; | |
976 | ||
977 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 978 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 979 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
980 | name_len++; /* trailing null */ |
981 | name_len *= 2; | |
09d1db5c | 982 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
983 | name_len = strnlen(name, PATH_MAX); |
984 | name_len++; /* trailing null */ | |
985 | strncpy(pSMB->DirName, name, name_len); | |
986 | } | |
987 | ||
988 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 989 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
990 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
991 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
992 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 993 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 994 | if (rc) |
b6b38f70 | 995 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 996 | |
1da177e4 LT |
997 | cifs_buf_release(pSMB); |
998 | if (rc == -EAGAIN) | |
999 | goto MkDirRetry; | |
1000 | return rc; | |
1001 | } | |
1002 | ||
2dd29d31 | 1003 | int |
96daf2b0 | 1004 | CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags, |
ad7a2926 | 1005 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1006 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1007 | const struct nls_table *nls_codepage, int remap) |
1008 | { | |
1009 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1010 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1011 | int name_len; | |
1012 | int rc = 0; | |
1013 | int bytes_returned = 0; | |
2dd29d31 | 1014 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1015 | OPEN_PSX_REQ *pdata; |
1016 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1017 | |
b6b38f70 | 1018 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1019 | PsxCreat: |
1020 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1021 | (void **) &pSMBr); | |
1022 | if (rc) | |
1023 | return rc; | |
1024 | ||
1025 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1026 | name_len = | |
1027 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1028 | PATH_MAX, nls_codepage, remap); | |
1029 | name_len++; /* trailing null */ | |
1030 | name_len *= 2; | |
1031 | } else { /* BB improve the check for buffer overruns BB */ | |
1032 | name_len = strnlen(name, PATH_MAX); | |
1033 | name_len++; /* trailing null */ | |
1034 | strncpy(pSMB->FileName, name, name_len); | |
1035 | } | |
1036 | ||
1037 | params = 6 + name_len; | |
1038 | count = sizeof(OPEN_PSX_REQ); | |
1039 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1040 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1041 | pSMB->MaxSetupCount = 0; | |
1042 | pSMB->Reserved = 0; | |
1043 | pSMB->Flags = 0; | |
1044 | pSMB->Timeout = 0; | |
1045 | pSMB->Reserved2 = 0; | |
1046 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1047 | InformationLevel) - 4; |
2dd29d31 | 1048 | offset = param_offset + params; |
2dd29d31 | 1049 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1050 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1051 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1052 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1053 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1054 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1055 | pSMB->DataOffset = cpu_to_le16(offset); | |
1056 | pSMB->SetupCount = 1; | |
1057 | pSMB->Reserved3 = 0; | |
1058 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1059 | byte_count = 3 /* pad */ + params + count; | |
1060 | ||
1061 | pSMB->DataCount = cpu_to_le16(count); | |
1062 | pSMB->ParameterCount = cpu_to_le16(params); | |
1063 | pSMB->TotalDataCount = pSMB->DataCount; | |
1064 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1065 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1066 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1067 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1068 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1069 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1070 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1071 | if (rc) { | |
b6b38f70 | 1072 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1073 | goto psx_create_err; |
1074 | } | |
1075 | ||
b6b38f70 | 1076 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1077 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1078 | ||
820a803f | 1079 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1080 | rc = -EIO; /* bad smb */ |
1081 | goto psx_create_err; | |
1082 | } | |
1083 | ||
1084 | /* copy return information to pRetData */ | |
50c2f753 | 1085 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1086 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1087 | |
2dd29d31 | 1088 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1089 | if (netfid) |
2dd29d31 SF |
1090 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1091 | /* Let caller know file was created so we can set the mode. */ | |
1092 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1093 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1094 | *pOplock |= CIFS_CREATE_ACTION; |
1095 | /* check to make sure response data is there */ | |
8f2376ad CG |
1096 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1097 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1098 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1099 | } else { |
820a803f | 1100 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1101 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1102 | cERROR(1, "Open response data too small"); |
8f2376ad | 1103 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1104 | goto psx_create_err; |
1105 | } | |
50c2f753 | 1106 | memcpy((char *) pRetData, |
cbac3cba | 1107 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1108 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1109 | } |
2dd29d31 SF |
1110 | |
1111 | psx_create_err: | |
1112 | cifs_buf_release(pSMB); | |
1113 | ||
65bc98b0 SF |
1114 | if (posix_flags & SMB_O_DIRECTORY) |
1115 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1116 | else | |
1117 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1118 | |
1119 | if (rc == -EAGAIN) | |
1120 | goto PsxCreat; | |
1121 | ||
50c2f753 | 1122 | return rc; |
2dd29d31 SF |
1123 | } |
1124 | ||
a9d02ad4 SF |
1125 | static __u16 convert_disposition(int disposition) |
1126 | { | |
1127 | __u16 ofun = 0; | |
1128 | ||
1129 | switch (disposition) { | |
1130 | case FILE_SUPERSEDE: | |
1131 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1132 | break; | |
1133 | case FILE_OPEN: | |
1134 | ofun = SMBOPEN_OAPPEND; | |
1135 | break; | |
1136 | case FILE_CREATE: | |
1137 | ofun = SMBOPEN_OCREATE; | |
1138 | break; | |
1139 | case FILE_OPEN_IF: | |
1140 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1141 | break; | |
1142 | case FILE_OVERWRITE: | |
1143 | ofun = SMBOPEN_OTRUNC; | |
1144 | break; | |
1145 | case FILE_OVERWRITE_IF: | |
1146 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1147 | break; | |
1148 | default: | |
b6b38f70 | 1149 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1150 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1151 | } | |
1152 | return ofun; | |
1153 | } | |
1154 | ||
35fc37d5 JL |
1155 | static int |
1156 | access_flags_to_smbopen_mode(const int access_flags) | |
1157 | { | |
1158 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1159 | ||
1160 | if (masked_flags == GENERIC_READ) | |
1161 | return SMBOPEN_READ; | |
1162 | else if (masked_flags == GENERIC_WRITE) | |
1163 | return SMBOPEN_WRITE; | |
1164 | ||
1165 | /* just go for read/write */ | |
1166 | return SMBOPEN_READWRITE; | |
1167 | } | |
1168 | ||
a9d02ad4 | 1169 | int |
96daf2b0 | 1170 | SMBLegacyOpen(const int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1171 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1172 | const int access_flags, const int create_options, __u16 *netfid, |
1173 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1174 | const struct nls_table *nls_codepage, int remap) |
1175 | { | |
1176 | int rc = -EACCES; | |
1177 | OPENX_REQ *pSMB = NULL; | |
1178 | OPENX_RSP *pSMBr = NULL; | |
1179 | int bytes_returned; | |
1180 | int name_len; | |
1181 | __u16 count; | |
1182 | ||
1183 | OldOpenRetry: | |
1184 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1185 | (void **) &pSMBr); | |
1186 | if (rc) | |
1187 | return rc; | |
1188 | ||
1189 | pSMB->AndXCommand = 0xFF; /* none */ | |
1190 | ||
1191 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1192 | count = 1; /* account for one byte pad to word boundary */ | |
1193 | name_len = | |
1194 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1195 | fileName, PATH_MAX, nls_codepage, remap); | |
1196 | name_len++; /* trailing null */ | |
1197 | name_len *= 2; | |
1198 | } else { /* BB improve check for buffer overruns BB */ | |
1199 | count = 0; /* no pad */ | |
1200 | name_len = strnlen(fileName, PATH_MAX); | |
1201 | name_len++; /* trailing null */ | |
1202 | strncpy(pSMB->fileName, fileName, name_len); | |
1203 | } | |
1204 | if (*pOplock & REQ_OPLOCK) | |
1205 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1206 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1207 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1208 | |
a9d02ad4 | 1209 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1210 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1211 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1212 | /* set file as system file if special file such | |
1213 | as fifo and server expecting SFU style and | |
1214 | no Unix extensions */ | |
1215 | ||
790fe579 SF |
1216 | if (create_options & CREATE_OPTION_SPECIAL) |
1217 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1218 | else /* BB FIXME BB */ |
1219 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1220 | |
67750fb9 JL |
1221 | if (create_options & CREATE_OPTION_READONLY) |
1222 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1223 | |
1224 | /* BB FIXME BB */ | |
50c2f753 SF |
1225 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1226 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1227 | /* BB FIXME END BB */ |
3e87d803 SF |
1228 | |
1229 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1230 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1231 | count += name_len; |
be8e3b00 | 1232 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1233 | |
1234 | pSMB->ByteCount = cpu_to_le16(count); | |
1235 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1236 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1237 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1238 | cifs_stats_inc(&tcon->num_opens); |
1239 | if (rc) { | |
b6b38f70 | 1240 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1241 | } else { |
1242 | /* BB verify if wct == 15 */ | |
1243 | ||
582d21e5 | 1244 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1245 | |
1246 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1247 | /* Let caller know file was created so we can set the mode. */ | |
1248 | /* Do we care about the CreateAction in any other cases? */ | |
1249 | /* BB FIXME BB */ | |
790fe579 | 1250 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1251 | *pOplock |= CIFS_CREATE_ACTION; */ |
1252 | /* BB FIXME END */ | |
1253 | ||
790fe579 | 1254 | if (pfile_info) { |
a9d02ad4 SF |
1255 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1256 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1257 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1258 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1259 | pfile_info->Attributes = |
50c2f753 | 1260 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1261 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1262 | pfile_info->AllocationSize = |
1263 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1264 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1265 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1266 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1267 | } |
1268 | } | |
1269 | ||
1270 | cifs_buf_release(pSMB); | |
1271 | if (rc == -EAGAIN) | |
1272 | goto OldOpenRetry; | |
1273 | return rc; | |
1274 | } | |
1275 | ||
1da177e4 | 1276 | int |
96daf2b0 | 1277 | CIFSSMBOpen(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 1278 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1279 | const int access_flags, const int create_options, __u16 *netfid, |
1280 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1281 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1282 | { |
1283 | int rc = -EACCES; | |
1284 | OPEN_REQ *pSMB = NULL; | |
1285 | OPEN_RSP *pSMBr = NULL; | |
1286 | int bytes_returned; | |
1287 | int name_len; | |
1288 | __u16 count; | |
1289 | ||
1290 | openRetry: | |
1291 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1292 | (void **) &pSMBr); | |
1293 | if (rc) | |
1294 | return rc; | |
1295 | ||
1296 | pSMB->AndXCommand = 0xFF; /* none */ | |
1297 | ||
1298 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1299 | count = 1; /* account for one byte pad to word boundary */ | |
1300 | name_len = | |
b1a45695 | 1301 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1302 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1303 | name_len++; /* trailing null */ |
1304 | name_len *= 2; | |
1305 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1306 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1307 | count = 0; /* no pad */ |
1308 | name_len = strnlen(fileName, PATH_MAX); | |
1309 | name_len++; /* trailing null */ | |
1310 | pSMB->NameLength = cpu_to_le16(name_len); | |
1311 | strncpy(pSMB->fileName, fileName, name_len); | |
1312 | } | |
1313 | if (*pOplock & REQ_OPLOCK) | |
1314 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1315 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1316 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1317 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1318 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1319 | /* set file as system file if special file such |
1320 | as fifo and server expecting SFU style and | |
1321 | no Unix extensions */ | |
790fe579 | 1322 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1323 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1324 | else | |
1325 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1326 | |
1da177e4 LT |
1327 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1328 | /* but it helps speed up case sensitive checks for other | |
1329 | servers such as Samba */ | |
1330 | if (tcon->ses->capabilities & CAP_UNIX) | |
1331 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1332 | ||
67750fb9 JL |
1333 | if (create_options & CREATE_OPTION_READONLY) |
1334 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1335 | ||
1da177e4 LT |
1336 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1337 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1338 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1339 | /* BB Expirement with various impersonation levels and verify */ |
1340 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1341 | pSMB->SecurityFlags = |
1342 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1343 | ||
1344 | count += name_len; | |
be8e3b00 | 1345 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1346 | |
1347 | pSMB->ByteCount = cpu_to_le16(count); | |
1348 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1349 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1350 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1351 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1352 | if (rc) { |
b6b38f70 | 1353 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1354 | } else { |
09d1db5c | 1355 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1356 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1357 | /* Let caller know file was created so we can set the mode. */ | |
1358 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1359 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1360 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1361 | if (pfile_info) { |
61e74801 SF |
1362 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1363 | 36 /* CreationTime to Attributes */); | |
1364 | /* the file_info buf is endian converted by caller */ | |
1365 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1366 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1367 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1368 | pfile_info->DeletePending = 0; | |
1da177e4 | 1369 | } |
1da177e4 | 1370 | } |
a5a2b489 | 1371 | |
1da177e4 LT |
1372 | cifs_buf_release(pSMB); |
1373 | if (rc == -EAGAIN) | |
1374 | goto openRetry; | |
1375 | return rc; | |
1376 | } | |
1377 | ||
1da177e4 | 1378 | int |
d4ffff1f | 1379 | CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, |
50c2f753 | 1380 | char **buf, int *pbuf_type) |
1da177e4 LT |
1381 | { |
1382 | int rc = -EACCES; | |
1383 | READ_REQ *pSMB = NULL; | |
1384 | READ_RSP *pSMBr = NULL; | |
1385 | char *pReadData = NULL; | |
bfa0d75a | 1386 | int wct; |
ec637e3f SF |
1387 | int resp_buf_type = 0; |
1388 | struct kvec iov[1]; | |
d4ffff1f PS |
1389 | __u32 pid = io_parms->pid; |
1390 | __u16 netfid = io_parms->netfid; | |
1391 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1392 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1393 | unsigned int count = io_parms->length; |
1da177e4 | 1394 | |
b6b38f70 | 1395 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1396 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1397 | wct = 12; |
4c3130ef | 1398 | else { |
bfa0d75a | 1399 | wct = 10; /* old style read */ |
d4ffff1f | 1400 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1401 | /* can not handle this big offset for old */ |
1402 | return -EIO; | |
1403 | } | |
1404 | } | |
1da177e4 LT |
1405 | |
1406 | *nbytes = 0; | |
ec637e3f | 1407 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1408 | if (rc) |
1409 | return rc; | |
1410 | ||
d4ffff1f PS |
1411 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1412 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1413 | ||
1da177e4 LT |
1414 | /* tcon and ses pointer are checked in smb_init */ |
1415 | if (tcon->ses->server == NULL) | |
1416 | return -ECONNABORTED; | |
1417 | ||
ec637e3f | 1418 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1419 | pSMB->Fid = netfid; |
d4ffff1f | 1420 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1421 | if (wct == 12) |
d4ffff1f | 1422 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1423 | |
1da177e4 LT |
1424 | pSMB->Remaining = 0; |
1425 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1426 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1427 | if (wct == 12) |
bfa0d75a SF |
1428 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1429 | else { | |
1430 | /* old style read */ | |
50c2f753 | 1431 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1432 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1433 | pSMBW->ByteCount = 0; |
bfa0d75a | 1434 | } |
ec637e3f SF |
1435 | |
1436 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1437 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1438 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1439 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1440 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1441 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1442 | if (rc) { |
b6b38f70 | 1443 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1444 | } else { |
1445 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1446 | data_length = data_length << 16; | |
1447 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1448 | *nbytes = data_length; | |
1449 | ||
1450 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1451 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1452 | || (data_length > count)) { |
b6b38f70 JP |
1453 | cFYI(1, "bad length %d for count %d", |
1454 | data_length, count); | |
1da177e4 LT |
1455 | rc = -EIO; |
1456 | *nbytes = 0; | |
1457 | } else { | |
ec637e3f | 1458 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1459 | le16_to_cpu(pSMBr->DataOffset); |
1460 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1461 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1462 | rc = -EFAULT; |
26f57364 | 1463 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1464 | if (*buf) |
50c2f753 | 1465 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1466 | } |
1467 | } | |
1da177e4 | 1468 | |
4b8f930f | 1469 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1470 | if (*buf) { |
1471 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1472 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1473 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1474 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1475 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1476 | /* return buffer to caller to free */ |
1477 | *buf = iov[0].iov_base; | |
790fe579 | 1478 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1479 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1480 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1481 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1482 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1483 | |
1484 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1485 | since file handle passed in no longer valid */ |
1486 | return rc; | |
1487 | } | |
1488 | ||
ec637e3f | 1489 | |
1da177e4 | 1490 | int |
fa2989f4 PS |
1491 | CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, |
1492 | unsigned int *nbytes, const char *buf, | |
50c2f753 | 1493 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1494 | { |
1495 | int rc = -EACCES; | |
1496 | WRITE_REQ *pSMB = NULL; | |
1497 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1498 | int bytes_returned, wct; |
1da177e4 LT |
1499 | __u32 bytes_sent; |
1500 | __u16 byte_count; | |
fa2989f4 PS |
1501 | __u32 pid = io_parms->pid; |
1502 | __u16 netfid = io_parms->netfid; | |
1503 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1504 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1505 | unsigned int count = io_parms->length; |
1da177e4 | 1506 | |
a24e2d7d SF |
1507 | *nbytes = 0; |
1508 | ||
b6b38f70 | 1509 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1510 | if (tcon->ses == NULL) |
1c955187 SF |
1511 | return -ECONNABORTED; |
1512 | ||
790fe579 | 1513 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1514 | wct = 14; |
4c3130ef | 1515 | else { |
1c955187 | 1516 | wct = 12; |
4c3130ef SF |
1517 | if ((offset >> 32) > 0) { |
1518 | /* can not handle big offset for old srv */ | |
1519 | return -EIO; | |
1520 | } | |
1521 | } | |
1c955187 SF |
1522 | |
1523 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1524 | (void **) &pSMBr); |
1525 | if (rc) | |
1526 | return rc; | |
fa2989f4 PS |
1527 | |
1528 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1529 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1530 | ||
1da177e4 LT |
1531 | /* tcon and ses pointer are checked in smb_init */ |
1532 | if (tcon->ses->server == NULL) | |
1533 | return -ECONNABORTED; | |
1534 | ||
1535 | pSMB->AndXCommand = 0xFF; /* none */ | |
1536 | pSMB->Fid = netfid; | |
1537 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1538 | if (wct == 14) |
1c955187 | 1539 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1540 | |
1da177e4 LT |
1541 | pSMB->Reserved = 0xFFFFFFFF; |
1542 | pSMB->WriteMode = 0; | |
1543 | pSMB->Remaining = 0; | |
1544 | ||
50c2f753 | 1545 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1546 | can send more if LARGE_WRITE_X capability returned by the server and if |
1547 | our buffer is big enough or if we convert to iovecs on socket writes | |
1548 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1549 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1550 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1551 | } else { | |
1552 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1553 | & ~0xFF; | |
1554 | } | |
1555 | ||
1556 | if (bytes_sent > count) | |
1557 | bytes_sent = count; | |
1558 | pSMB->DataOffset = | |
50c2f753 | 1559 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1560 | if (buf) |
61e74801 | 1561 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1562 | else if (ubuf) { |
1563 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1564 | cifs_buf_release(pSMB); |
1565 | return -EFAULT; | |
1566 | } | |
e30dcf3a | 1567 | } else if (count != 0) { |
1da177e4 LT |
1568 | /* No buffer */ |
1569 | cifs_buf_release(pSMB); | |
1570 | return -EINVAL; | |
e30dcf3a | 1571 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1572 | if (wct == 14) |
e30dcf3a | 1573 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1574 | else /* wct == 12 */ |
e30dcf3a | 1575 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1576 | |
1da177e4 LT |
1577 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1578 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1579 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1580 | |
790fe579 | 1581 | if (wct == 14) |
1c955187 | 1582 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1583 | else { /* old style write has byte count 4 bytes earlier |
1584 | so 4 bytes pad */ | |
1585 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1586 | (struct smb_com_writex_req *)pSMB; |
1587 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1588 | } | |
1da177e4 LT |
1589 | |
1590 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1591 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1592 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1593 | if (rc) { |
f19159dc | 1594 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1595 | } else { |
1596 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1597 | *nbytes = (*nbytes) << 16; | |
1598 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1599 | |
1600 | /* | |
1601 | * Mask off high 16 bits when bytes written as returned by the | |
1602 | * server is greater than bytes requested by the client. Some | |
1603 | * OS/2 servers are known to set incorrect CountHigh values. | |
1604 | */ | |
1605 | if (*nbytes > count) | |
1606 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1607 | } |
1608 | ||
1609 | cifs_buf_release(pSMB); | |
1610 | ||
50c2f753 | 1611 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1612 | since file handle passed in no longer valid */ |
1613 | ||
1614 | return rc; | |
1615 | } | |
1616 | ||
c28c89fc JL |
1617 | void |
1618 | cifs_writedata_release(struct kref *refcount) | |
1619 | { | |
1620 | struct cifs_writedata *wdata = container_of(refcount, | |
1621 | struct cifs_writedata, refcount); | |
1622 | ||
1623 | if (wdata->cfile) | |
1624 | cifsFileInfo_put(wdata->cfile); | |
1625 | ||
1626 | kfree(wdata); | |
1627 | } | |
1628 | ||
1629 | /* | |
1630 | * Write failed with a retryable error. Resend the write request. It's also | |
1631 | * possible that the page was redirtied so re-clean the page. | |
1632 | */ | |
1633 | static void | |
1634 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1635 | { | |
1636 | int i, rc; | |
1637 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1638 | ||
1639 | for (i = 0; i < wdata->nr_pages; i++) { | |
1640 | lock_page(wdata->pages[i]); | |
1641 | clear_page_dirty_for_io(wdata->pages[i]); | |
1642 | } | |
1643 | ||
1644 | do { | |
1645 | rc = cifs_async_writev(wdata); | |
1646 | } while (rc == -EAGAIN); | |
1647 | ||
1648 | for (i = 0; i < wdata->nr_pages; i++) { | |
1649 | if (rc != 0) | |
1650 | SetPageError(wdata->pages[i]); | |
1651 | unlock_page(wdata->pages[i]); | |
1652 | } | |
1653 | ||
1654 | mapping_set_error(inode->i_mapping, rc); | |
1655 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1656 | } | |
1657 | ||
1658 | static void | |
1659 | cifs_writev_complete(struct work_struct *work) | |
1660 | { | |
1661 | struct cifs_writedata *wdata = container_of(work, | |
1662 | struct cifs_writedata, work); | |
1663 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1664 | int i = 0; | |
1665 | ||
1666 | if (wdata->result == 0) { | |
1667 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); | |
1668 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), | |
1669 | wdata->bytes); | |
1670 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1671 | return cifs_writev_requeue(wdata); | |
1672 | ||
1673 | for (i = 0; i < wdata->nr_pages; i++) { | |
1674 | struct page *page = wdata->pages[i]; | |
1675 | if (wdata->result == -EAGAIN) | |
1676 | __set_page_dirty_nobuffers(page); | |
1677 | else if (wdata->result < 0) | |
1678 | SetPageError(page); | |
1679 | end_page_writeback(page); | |
1680 | page_cache_release(page); | |
1681 | } | |
1682 | if (wdata->result != -EAGAIN) | |
1683 | mapping_set_error(inode->i_mapping, wdata->result); | |
1684 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1685 | } | |
1686 | ||
1687 | struct cifs_writedata * | |
1688 | cifs_writedata_alloc(unsigned int nr_pages) | |
1689 | { | |
1690 | struct cifs_writedata *wdata; | |
1691 | ||
1692 | /* this would overflow */ | |
1693 | if (nr_pages == 0) { | |
1694 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
1695 | return NULL; | |
1696 | } | |
1697 | ||
1698 | /* writedata + number of page pointers */ | |
1699 | wdata = kzalloc(sizeof(*wdata) + | |
1700 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1701 | if (wdata != NULL) { | |
1702 | INIT_WORK(&wdata->work, cifs_writev_complete); | |
1703 | kref_init(&wdata->refcount); | |
1704 | } | |
1705 | return wdata; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * Check the midState and signature on received buffer (if any), and queue the | |
1710 | * workqueue completion task. | |
1711 | */ | |
1712 | static void | |
1713 | cifs_writev_callback(struct mid_q_entry *mid) | |
1714 | { | |
1715 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1716 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1717 | unsigned int written; |
1718 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1719 | ||
1720 | switch (mid->midState) { | |
1721 | case MID_RESPONSE_RECEIVED: | |
1722 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1723 | if (wdata->result != 0) | |
1724 | break; | |
1725 | ||
1726 | written = le16_to_cpu(smb->CountHigh); | |
1727 | written <<= 16; | |
1728 | written += le16_to_cpu(smb->Count); | |
1729 | /* | |
1730 | * Mask off high 16 bits when bytes written as returned | |
1731 | * by the server is greater than bytes requested by the | |
1732 | * client. OS/2 servers are known to set incorrect | |
1733 | * CountHigh values. | |
1734 | */ | |
1735 | if (written > wdata->bytes) | |
1736 | written &= 0xFFFF; | |
1737 | ||
1738 | if (written < wdata->bytes) | |
1739 | wdata->result = -ENOSPC; | |
1740 | else | |
1741 | wdata->bytes = written; | |
1742 | break; | |
1743 | case MID_REQUEST_SUBMITTED: | |
1744 | case MID_RETRY_NEEDED: | |
1745 | wdata->result = -EAGAIN; | |
1746 | break; | |
1747 | default: | |
1748 | wdata->result = -EIO; | |
1749 | break; | |
1750 | } | |
1751 | ||
1752 | queue_work(system_nrt_wq, &wdata->work); | |
1753 | DeleteMidQEntry(mid); | |
1754 | atomic_dec(&tcon->ses->server->inFlight); | |
1755 | wake_up(&tcon->ses->server->request_q); | |
1756 | } | |
1757 | ||
1758 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
1759 | int | |
1760 | cifs_async_writev(struct cifs_writedata *wdata) | |
1761 | { | |
1762 | int i, rc = -EACCES; | |
1763 | WRITE_REQ *smb = NULL; | |
1764 | int wct; | |
96daf2b0 | 1765 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1766 | struct inode *inode = wdata->cfile->dentry->d_inode; |
1767 | struct kvec *iov = NULL; | |
1768 | ||
1769 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
1770 | wct = 14; | |
1771 | } else { | |
1772 | wct = 12; | |
1773 | if (wdata->offset >> 32 > 0) { | |
1774 | /* can not handle big offset for old srv */ | |
1775 | return -EIO; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
1780 | if (rc) | |
1781 | goto async_writev_out; | |
1782 | ||
1783 | /* 1 iov per page + 1 for header */ | |
1784 | iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS); | |
1785 | if (iov == NULL) { | |
1786 | rc = -ENOMEM; | |
1787 | goto async_writev_out; | |
1788 | } | |
1789 | ||
fa2989f4 PS |
1790 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->cfile->pid); |
1791 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->cfile->pid >> 16)); | |
1792 | ||
c28c89fc JL |
1793 | smb->AndXCommand = 0xFF; /* none */ |
1794 | smb->Fid = wdata->cfile->netfid; | |
1795 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); | |
1796 | if (wct == 14) | |
1797 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
1798 | smb->Reserved = 0xFFFFFFFF; | |
1799 | smb->WriteMode = 0; | |
1800 | smb->Remaining = 0; | |
1801 | ||
1802 | smb->DataOffset = | |
1803 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1804 | ||
1805 | /* 4 for RFC1001 length + 1 for BCC */ | |
1806 | iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; | |
1807 | iov[0].iov_base = smb; | |
1808 | ||
1809 | /* marshal up the pages into iov array */ | |
1810 | wdata->bytes = 0; | |
1811 | for (i = 0; i < wdata->nr_pages; i++) { | |
1812 | iov[i + 1].iov_len = min(inode->i_size - | |
1813 | page_offset(wdata->pages[i]), | |
1814 | (loff_t)PAGE_CACHE_SIZE); | |
1815 | iov[i + 1].iov_base = kmap(wdata->pages[i]); | |
1816 | wdata->bytes += iov[i + 1].iov_len; | |
1817 | } | |
1818 | ||
1819 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
1820 | ||
1821 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
1822 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
1823 | ||
1824 | if (wct == 14) { | |
1825 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
1826 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
1827 | } else { | |
1828 | /* wct == 12 */ | |
1829 | struct smb_com_writex_req *smbw = | |
1830 | (struct smb_com_writex_req *)smb; | |
1831 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
1832 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
1833 | iov[0].iov_len += 4; /* pad bigger by four bytes */ | |
1834 | } | |
1835 | ||
1836 | kref_get(&wdata->refcount); | |
1837 | rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1, | |
44d22d84 | 1838 | NULL, cifs_writev_callback, wdata, false); |
c28c89fc JL |
1839 | |
1840 | if (rc == 0) | |
1841 | cifs_stats_inc(&tcon->num_writes); | |
1842 | else | |
1843 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1844 | ||
1845 | /* send is done, unmap pages */ | |
1846 | for (i = 0; i < wdata->nr_pages; i++) | |
1847 | kunmap(wdata->pages[i]); | |
1848 | ||
1849 | async_writev_out: | |
1850 | cifs_small_buf_release(smb); | |
1851 | kfree(iov); | |
1852 | return rc; | |
1853 | } | |
1854 | ||
d6e04ae6 | 1855 | int |
fa2989f4 PS |
1856 | CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, |
1857 | unsigned int *nbytes, struct kvec *iov, int n_vec, | |
1858 | const int long_op) | |
1da177e4 LT |
1859 | { |
1860 | int rc = -EACCES; | |
1861 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1862 | int wct; |
d6e04ae6 | 1863 | int smb_hdr_len; |
ec637e3f | 1864 | int resp_buf_type = 0; |
fa2989f4 PS |
1865 | __u32 pid = io_parms->pid; |
1866 | __u16 netfid = io_parms->netfid; | |
1867 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1868 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1869 | unsigned int count = io_parms->length; |
1da177e4 | 1870 | |
fbec9ab9 JL |
1871 | *nbytes = 0; |
1872 | ||
b6b38f70 | 1873 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 1874 | |
4c3130ef | 1875 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1876 | wct = 14; |
4c3130ef | 1877 | } else { |
8cc64c6e | 1878 | wct = 12; |
4c3130ef SF |
1879 | if ((offset >> 32) > 0) { |
1880 | /* can not handle big offset for old srv */ | |
1881 | return -EIO; | |
1882 | } | |
1883 | } | |
8cc64c6e | 1884 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1885 | if (rc) |
1886 | return rc; | |
fa2989f4 PS |
1887 | |
1888 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1889 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1890 | ||
1da177e4 LT |
1891 | /* tcon and ses pointer are checked in smb_init */ |
1892 | if (tcon->ses->server == NULL) | |
1893 | return -ECONNABORTED; | |
1894 | ||
d6e04ae6 | 1895 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1896 | pSMB->Fid = netfid; |
1897 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1898 | if (wct == 14) |
8cc64c6e | 1899 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1900 | pSMB->Reserved = 0xFFFFFFFF; |
1901 | pSMB->WriteMode = 0; | |
1902 | pSMB->Remaining = 0; | |
d6e04ae6 | 1903 | |
1da177e4 | 1904 | pSMB->DataOffset = |
50c2f753 | 1905 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1906 | |
3e84469d SF |
1907 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1908 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1909 | /* header + 1 byte pad */ |
1910 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1911 | if (wct == 14) |
be8e3b00 | 1912 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1913 | else /* wct == 12 */ |
be8e3b00 | 1914 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1915 | if (wct == 14) |
8cc64c6e SF |
1916 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1917 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1918 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1919 | (struct smb_com_writex_req *)pSMB; |
1920 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1921 | } | |
3e84469d | 1922 | iov[0].iov_base = pSMB; |
790fe579 | 1923 | if (wct == 14) |
ec637e3f SF |
1924 | iov[0].iov_len = smb_hdr_len + 4; |
1925 | else /* wct == 12 pad bigger by four bytes */ | |
1926 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1927 | |
1da177e4 | 1928 | |
ec637e3f | 1929 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1930 | long_op); |
a4544347 | 1931 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1932 | if (rc) { |
b6b38f70 | 1933 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 1934 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1935 | /* presumably this can not happen, but best to be safe */ |
1936 | rc = -EIO; | |
d6e04ae6 | 1937 | } else { |
ad7a2926 | 1938 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1939 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1940 | *nbytes = (*nbytes) << 16; | |
1941 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1942 | |
1943 | /* | |
1944 | * Mask off high 16 bits when bytes written as returned by the | |
1945 | * server is greater than bytes requested by the client. OS/2 | |
1946 | * servers are known to set incorrect CountHigh values. | |
1947 | */ | |
1948 | if (*nbytes > count) | |
1949 | *nbytes &= 0xFFFF; | |
50c2f753 | 1950 | } |
1da177e4 | 1951 | |
4b8f930f | 1952 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1953 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1954 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1955 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1956 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1957 | |
50c2f753 | 1958 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1959 | since file handle passed in no longer valid */ |
1960 | ||
1961 | return rc; | |
1962 | } | |
d6e04ae6 SF |
1963 | |
1964 | ||
1da177e4 | 1965 | int |
96daf2b0 | 1966 | CIFSSMBLock(const int xid, struct cifs_tcon *tcon, |
03776f45 | 1967 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 1968 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
1969 | const __u32 numLock, const __u8 lockType, |
1970 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1971 | { |
1972 | int rc = 0; | |
1973 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1974 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1975 | int bytes_returned; |
1976 | int timeout = 0; | |
1977 | __u16 count; | |
1978 | ||
b6b38f70 | 1979 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
1980 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1981 | ||
1da177e4 LT |
1982 | if (rc) |
1983 | return rc; | |
1984 | ||
790fe579 | 1985 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1986 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1987 | pSMB->Timeout = 0; |
4b18f2a9 | 1988 | } else if (waitFlag) { |
133672ef | 1989 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1990 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1991 | } else { | |
1992 | pSMB->Timeout = 0; | |
1993 | } | |
1994 | ||
1995 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1996 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1997 | pSMB->LockType = lockType; | |
12fed00d | 1998 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1999 | pSMB->AndXCommand = 0xFF; /* none */ |
2000 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2001 | ||
790fe579 | 2002 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2003 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2004 | /* BB where to store pid high? */ |
2005 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2006 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2007 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2008 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2009 | count = sizeof(LOCKING_ANDX_RANGE); | |
2010 | } else { | |
2011 | /* oplock break */ | |
2012 | count = 0; | |
2013 | } | |
be8e3b00 | 2014 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2015 | pSMB->ByteCount = cpu_to_le16(count); |
2016 | ||
7ee1af76 JA |
2017 | if (waitFlag) { |
2018 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2019 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2020 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2021 | } else { |
133672ef SF |
2022 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
2023 | timeout); | |
2024 | /* SMB buffer freed by function above */ | |
7ee1af76 | 2025 | } |
a4544347 | 2026 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 2027 | if (rc) |
b6b38f70 | 2028 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2029 | |
50c2f753 | 2030 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2031 | since file handle passed in no longer valid */ |
2032 | return rc; | |
2033 | } | |
2034 | ||
08547b03 | 2035 | int |
96daf2b0 | 2036 | CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon, |
08547b03 | 2037 | const __u16 smb_file_id, const int get_flag, const __u64 len, |
50c2f753 | 2038 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 2039 | const bool waitFlag) |
08547b03 SF |
2040 | { |
2041 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2042 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2043 | struct cifs_posix_lock *parm_data; |
2044 | int rc = 0; | |
3a5ff61c | 2045 | int timeout = 0; |
08547b03 | 2046 | int bytes_returned = 0; |
133672ef | 2047 | int resp_buf_type = 0; |
08547b03 | 2048 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2049 | struct kvec iov[1]; |
08547b03 | 2050 | |
b6b38f70 | 2051 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2052 | |
790fe579 | 2053 | if (pLockData == NULL) |
ed5f0370 | 2054 | return -EINVAL; |
fc94cdb9 | 2055 | |
08547b03 SF |
2056 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2057 | ||
2058 | if (rc) | |
2059 | return rc; | |
2060 | ||
2061 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2062 | ||
50c2f753 | 2063 | params = 6; |
08547b03 SF |
2064 | pSMB->MaxSetupCount = 0; |
2065 | pSMB->Reserved = 0; | |
2066 | pSMB->Flags = 0; | |
08547b03 SF |
2067 | pSMB->Reserved2 = 0; |
2068 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2069 | offset = param_offset + params; | |
2070 | ||
08547b03 SF |
2071 | count = sizeof(struct cifs_posix_lock); |
2072 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2073 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2074 | pSMB->SetupCount = 1; |
2075 | pSMB->Reserved3 = 0; | |
790fe579 | 2076 | if (get_flag) |
08547b03 SF |
2077 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2078 | else | |
2079 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2080 | byte_count = 3 /* pad */ + params + count; | |
2081 | pSMB->DataCount = cpu_to_le16(count); | |
2082 | pSMB->ParameterCount = cpu_to_le16(params); | |
2083 | pSMB->TotalDataCount = pSMB->DataCount; | |
2084 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2085 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2086 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2087 | (((char *) &pSMB->hdr.Protocol) + offset); |
2088 | ||
2089 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2090 | if (waitFlag) { |
133672ef | 2091 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2092 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2093 | pSMB->Timeout = cpu_to_le32(-1); |
2094 | } else | |
2095 | pSMB->Timeout = 0; | |
2096 | ||
08547b03 | 2097 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 2098 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 2099 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2100 | |
2101 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2102 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2103 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2104 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2105 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2106 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2107 | if (waitFlag) { |
2108 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2109 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2110 | } else { | |
133672ef | 2111 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2112 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2113 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2114 | &resp_buf_type, timeout); | |
2115 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2116 | not try to free it twice below on exit */ | |
2117 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2118 | } |
2119 | ||
08547b03 | 2120 | if (rc) { |
b6b38f70 | 2121 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
2122 | } else if (get_flag) { |
2123 | /* lock structure can be returned on get */ | |
2124 | __u16 data_offset; | |
2125 | __u16 data_count; | |
2126 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2127 | ||
820a803f | 2128 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2129 | rc = -EIO; /* bad smb */ |
2130 | goto plk_err_exit; | |
2131 | } | |
fc94cdb9 SF |
2132 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2133 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2134 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2135 | rc = -EIO; |
2136 | goto plk_err_exit; | |
2137 | } | |
2138 | parm_data = (struct cifs_posix_lock *) | |
2139 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2140 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2141 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2142 | else { |
2143 | if (parm_data->lock_type == | |
2144 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2145 | pLockData->fl_type = F_RDLCK; | |
2146 | else if (parm_data->lock_type == | |
2147 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2148 | pLockData->fl_type = F_WRLCK; | |
2149 | ||
5443d130 SF |
2150 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2151 | pLockData->fl_end = pLockData->fl_start + | |
2152 | le64_to_cpu(parm_data->length) - 1; | |
2153 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2154 | } |
08547b03 | 2155 | } |
50c2f753 | 2156 | |
fc94cdb9 | 2157 | plk_err_exit: |
08547b03 SF |
2158 | if (pSMB) |
2159 | cifs_small_buf_release(pSMB); | |
2160 | ||
133672ef SF |
2161 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2162 | cifs_small_buf_release(iov[0].iov_base); | |
2163 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2164 | cifs_buf_release(iov[0].iov_base); | |
2165 | ||
08547b03 SF |
2166 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2167 | since file handle passed in no longer valid */ | |
2168 | ||
2169 | return rc; | |
2170 | } | |
2171 | ||
2172 | ||
1da177e4 | 2173 | int |
96daf2b0 | 2174 | CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2175 | { |
2176 | int rc = 0; | |
2177 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2178 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2179 | |
2180 | /* do not retry on dead session on close */ | |
2181 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2182 | if (rc == -EAGAIN) |
1da177e4 LT |
2183 | return 0; |
2184 | if (rc) | |
2185 | return rc; | |
2186 | ||
1da177e4 | 2187 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2188 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2189 | pSMB->ByteCount = 0; |
133672ef | 2190 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 2191 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 2192 | if (rc) { |
790fe579 | 2193 | if (rc != -EINTR) { |
1da177e4 | 2194 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2195 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2196 | } |
2197 | } | |
2198 | ||
1da177e4 | 2199 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2200 | if (rc == -EAGAIN) |
1da177e4 LT |
2201 | rc = 0; |
2202 | ||
2203 | return rc; | |
2204 | } | |
2205 | ||
b298f223 | 2206 | int |
96daf2b0 | 2207 | CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2208 | { |
2209 | int rc = 0; | |
2210 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2211 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2212 | |
2213 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2214 | if (rc) | |
2215 | return rc; | |
2216 | ||
2217 | pSMB->FileID = (__u16) smb_file_id; | |
2218 | pSMB->ByteCount = 0; | |
2219 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
2220 | cifs_stats_inc(&tcon->num_flushes); | |
2221 | if (rc) | |
b6b38f70 | 2222 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2223 | |
2224 | return rc; | |
2225 | } | |
2226 | ||
1da177e4 | 2227 | int |
96daf2b0 | 2228 | CIFSSMBRename(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2229 | const char *fromName, const char *toName, |
737b758c | 2230 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2231 | { |
2232 | int rc = 0; | |
2233 | RENAME_REQ *pSMB = NULL; | |
2234 | RENAME_RSP *pSMBr = NULL; | |
2235 | int bytes_returned; | |
2236 | int name_len, name_len2; | |
2237 | __u16 count; | |
2238 | ||
b6b38f70 | 2239 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2240 | renameRetry: |
2241 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2242 | (void **) &pSMBr); | |
2243 | if (rc) | |
2244 | return rc; | |
2245 | ||
2246 | pSMB->BufferFormat = 0x04; | |
2247 | pSMB->SearchAttributes = | |
2248 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2249 | ATTR_DIRECTORY); | |
2250 | ||
2251 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2252 | name_len = | |
50c2f753 | 2253 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2254 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2255 | name_len++; /* trailing null */ |
2256 | name_len *= 2; | |
2257 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2258 | /* protocol requires ASCII signature byte on Unicode string */ | |
2259 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2260 | name_len2 = | |
582d21e5 | 2261 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2262 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2263 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2264 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2265 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2266 | name_len = strnlen(fromName, PATH_MAX); |
2267 | name_len++; /* trailing null */ | |
2268 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2269 | name_len2 = strnlen(toName, PATH_MAX); | |
2270 | name_len2++; /* trailing null */ | |
2271 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2272 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2273 | name_len2++; /* trailing null */ | |
2274 | name_len2++; /* signature byte */ | |
2275 | } | |
2276 | ||
2277 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2278 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2279 | pSMB->ByteCount = cpu_to_le16(count); |
2280 | ||
2281 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2282 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2283 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2284 | if (rc) |
b6b38f70 | 2285 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2286 | |
1da177e4 LT |
2287 | cifs_buf_release(pSMB); |
2288 | ||
2289 | if (rc == -EAGAIN) | |
2290 | goto renameRetry; | |
2291 | ||
2292 | return rc; | |
2293 | } | |
2294 | ||
96daf2b0 | 2295 | int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon, |
391e5755 | 2296 | int netfid, const char *target_name, |
50c2f753 | 2297 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2298 | { |
2299 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2300 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2301 | struct set_file_rename *rename_info; |
1da177e4 LT |
2302 | char *data_offset; |
2303 | char dummy_string[30]; | |
2304 | int rc = 0; | |
2305 | int bytes_returned = 0; | |
2306 | int len_of_str; | |
2307 | __u16 params, param_offset, offset, count, byte_count; | |
2308 | ||
b6b38f70 | 2309 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2310 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2311 | (void **) &pSMBr); | |
2312 | if (rc) | |
2313 | return rc; | |
2314 | ||
2315 | params = 6; | |
2316 | pSMB->MaxSetupCount = 0; | |
2317 | pSMB->Reserved = 0; | |
2318 | pSMB->Flags = 0; | |
2319 | pSMB->Timeout = 0; | |
2320 | pSMB->Reserved2 = 0; | |
2321 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2322 | offset = param_offset + params; | |
2323 | ||
2324 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2325 | rename_info = (struct set_file_rename *) data_offset; | |
2326 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2327 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2328 | pSMB->SetupCount = 1; |
2329 | pSMB->Reserved3 = 0; | |
2330 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2331 | byte_count = 3 /* pad */ + params; | |
2332 | pSMB->ParameterCount = cpu_to_le16(params); | |
2333 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2334 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2335 | pSMB->DataOffset = cpu_to_le16(offset); | |
2336 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2337 | rename_info->overwrite = cpu_to_le32(1); | |
2338 | rename_info->root_fid = 0; | |
2339 | /* unicode only call */ | |
790fe579 | 2340 | if (target_name == NULL) { |
50c2f753 SF |
2341 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2342 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2343 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2344 | } else { |
b1a45695 | 2345 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2346 | target_name, PATH_MAX, nls_codepage, |
2347 | remap); | |
1da177e4 LT |
2348 | } |
2349 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2350 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2351 | byte_count += count; |
2352 | pSMB->DataCount = cpu_to_le16(count); | |
2353 | pSMB->TotalDataCount = pSMB->DataCount; | |
2354 | pSMB->Fid = netfid; | |
2355 | pSMB->InformationLevel = | |
2356 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2357 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2358 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2359 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2360 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2361 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2362 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2363 | if (rc) |
b6b38f70 | 2364 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2365 | |
1da177e4 LT |
2366 | cifs_buf_release(pSMB); |
2367 | ||
2368 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2369 | since file handle passed in no longer valid */ | |
2370 | ||
2371 | return rc; | |
2372 | } | |
2373 | ||
2374 | int | |
96daf2b0 | 2375 | CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName, |
50c2f753 SF |
2376 | const __u16 target_tid, const char *toName, const int flags, |
2377 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2378 | { |
2379 | int rc = 0; | |
2380 | COPY_REQ *pSMB = NULL; | |
2381 | COPY_RSP *pSMBr = NULL; | |
2382 | int bytes_returned; | |
2383 | int name_len, name_len2; | |
2384 | __u16 count; | |
2385 | ||
b6b38f70 | 2386 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2387 | copyRetry: |
2388 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2389 | (void **) &pSMBr); | |
2390 | if (rc) | |
2391 | return rc; | |
2392 | ||
2393 | pSMB->BufferFormat = 0x04; | |
2394 | pSMB->Tid2 = target_tid; | |
2395 | ||
2396 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2397 | ||
2398 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2399 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2400 | fromName, PATH_MAX, nls_codepage, |
2401 | remap); | |
1da177e4 LT |
2402 | name_len++; /* trailing null */ |
2403 | name_len *= 2; | |
2404 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2405 | /* protocol requires ASCII signature byte on Unicode string */ | |
2406 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2407 | name_len2 = |
2408 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2409 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2410 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2411 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2412 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2413 | name_len = strnlen(fromName, PATH_MAX); |
2414 | name_len++; /* trailing null */ | |
2415 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2416 | name_len2 = strnlen(toName, PATH_MAX); | |
2417 | name_len2++; /* trailing null */ | |
2418 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2419 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2420 | name_len2++; /* trailing null */ | |
2421 | name_len2++; /* signature byte */ | |
2422 | } | |
2423 | ||
2424 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2425 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2426 | pSMB->ByteCount = cpu_to_le16(count); |
2427 | ||
2428 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2429 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2430 | if (rc) { | |
b6b38f70 JP |
2431 | cFYI(1, "Send error in copy = %d with %d files copied", |
2432 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2433 | } |
0d817bc0 | 2434 | cifs_buf_release(pSMB); |
1da177e4 LT |
2435 | |
2436 | if (rc == -EAGAIN) | |
2437 | goto copyRetry; | |
2438 | ||
2439 | return rc; | |
2440 | } | |
2441 | ||
2442 | int | |
96daf2b0 | 2443 | CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2444 | const char *fromName, const char *toName, |
2445 | const struct nls_table *nls_codepage) | |
2446 | { | |
2447 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2448 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2449 | char *data_offset; | |
2450 | int name_len; | |
2451 | int name_len_target; | |
2452 | int rc = 0; | |
2453 | int bytes_returned = 0; | |
2454 | __u16 params, param_offset, offset, byte_count; | |
2455 | ||
b6b38f70 | 2456 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2457 | createSymLinkRetry: |
2458 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2459 | (void **) &pSMBr); | |
2460 | if (rc) | |
2461 | return rc; | |
2462 | ||
2463 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2464 | name_len = | |
e89dc920 | 2465 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2466 | /* find define for this maxpathcomponent */ |
2467 | , nls_codepage); | |
2468 | name_len++; /* trailing null */ | |
2469 | name_len *= 2; | |
2470 | ||
50c2f753 | 2471 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2472 | name_len = strnlen(fromName, PATH_MAX); |
2473 | name_len++; /* trailing null */ | |
2474 | strncpy(pSMB->FileName, fromName, name_len); | |
2475 | } | |
2476 | params = 6 + name_len; | |
2477 | pSMB->MaxSetupCount = 0; | |
2478 | pSMB->Reserved = 0; | |
2479 | pSMB->Flags = 0; | |
2480 | pSMB->Timeout = 0; | |
2481 | pSMB->Reserved2 = 0; | |
2482 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2483 | InformationLevel) - 4; |
1da177e4 LT |
2484 | offset = param_offset + params; |
2485 | ||
2486 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2487 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2488 | name_len_target = | |
e89dc920 | 2489 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2490 | /* find define for this maxpathcomponent */ |
2491 | , nls_codepage); | |
2492 | name_len_target++; /* trailing null */ | |
2493 | name_len_target *= 2; | |
50c2f753 | 2494 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2495 | name_len_target = strnlen(toName, PATH_MAX); |
2496 | name_len_target++; /* trailing null */ | |
2497 | strncpy(data_offset, toName, name_len_target); | |
2498 | } | |
2499 | ||
2500 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2501 | /* BB find exact max on data count below from sess */ | |
2502 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2503 | pSMB->SetupCount = 1; | |
2504 | pSMB->Reserved3 = 0; | |
2505 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2506 | byte_count = 3 /* pad */ + params + name_len_target; | |
2507 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2508 | pSMB->ParameterCount = cpu_to_le16(params); | |
2509 | pSMB->TotalDataCount = pSMB->DataCount; | |
2510 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2511 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2512 | pSMB->DataOffset = cpu_to_le16(offset); | |
2513 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2514 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2515 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2516 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2517 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2518 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2519 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2520 | if (rc) |
b6b38f70 | 2521 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2522 | |
0d817bc0 | 2523 | cifs_buf_release(pSMB); |
1da177e4 LT |
2524 | |
2525 | if (rc == -EAGAIN) | |
2526 | goto createSymLinkRetry; | |
2527 | ||
2528 | return rc; | |
2529 | } | |
2530 | ||
2531 | int | |
96daf2b0 | 2532 | CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2533 | const char *fromName, const char *toName, |
737b758c | 2534 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2535 | { |
2536 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2537 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2538 | char *data_offset; | |
2539 | int name_len; | |
2540 | int name_len_target; | |
2541 | int rc = 0; | |
2542 | int bytes_returned = 0; | |
2543 | __u16 params, param_offset, offset, byte_count; | |
2544 | ||
b6b38f70 | 2545 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2546 | createHardLinkRetry: |
2547 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2548 | (void **) &pSMBr); | |
2549 | if (rc) | |
2550 | return rc; | |
2551 | ||
2552 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2553 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2554 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2555 | name_len++; /* trailing null */ |
2556 | name_len *= 2; | |
2557 | ||
50c2f753 | 2558 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2559 | name_len = strnlen(toName, PATH_MAX); |
2560 | name_len++; /* trailing null */ | |
2561 | strncpy(pSMB->FileName, toName, name_len); | |
2562 | } | |
2563 | params = 6 + name_len; | |
2564 | pSMB->MaxSetupCount = 0; | |
2565 | pSMB->Reserved = 0; | |
2566 | pSMB->Flags = 0; | |
2567 | pSMB->Timeout = 0; | |
2568 | pSMB->Reserved2 = 0; | |
2569 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2570 | InformationLevel) - 4; |
1da177e4 LT |
2571 | offset = param_offset + params; |
2572 | ||
2573 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2574 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2575 | name_len_target = | |
b1a45695 | 2576 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2577 | nls_codepage, remap); |
1da177e4 LT |
2578 | name_len_target++; /* trailing null */ |
2579 | name_len_target *= 2; | |
50c2f753 | 2580 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2581 | name_len_target = strnlen(fromName, PATH_MAX); |
2582 | name_len_target++; /* trailing null */ | |
2583 | strncpy(data_offset, fromName, name_len_target); | |
2584 | } | |
2585 | ||
2586 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2587 | /* BB find exact max on data count below from sess*/ | |
2588 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2589 | pSMB->SetupCount = 1; | |
2590 | pSMB->Reserved3 = 0; | |
2591 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2592 | byte_count = 3 /* pad */ + params + name_len_target; | |
2593 | pSMB->ParameterCount = cpu_to_le16(params); | |
2594 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2595 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2596 | pSMB->TotalDataCount = pSMB->DataCount; | |
2597 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2598 | pSMB->DataOffset = cpu_to_le16(offset); | |
2599 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2600 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2601 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2602 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2603 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2604 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2605 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2606 | if (rc) |
b6b38f70 | 2607 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2608 | |
2609 | cifs_buf_release(pSMB); | |
2610 | if (rc == -EAGAIN) | |
2611 | goto createHardLinkRetry; | |
2612 | ||
2613 | return rc; | |
2614 | } | |
2615 | ||
2616 | int | |
96daf2b0 | 2617 | CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2618 | const char *fromName, const char *toName, |
737b758c | 2619 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2620 | { |
2621 | int rc = 0; | |
2622 | NT_RENAME_REQ *pSMB = NULL; | |
2623 | RENAME_RSP *pSMBr = NULL; | |
2624 | int bytes_returned; | |
2625 | int name_len, name_len2; | |
2626 | __u16 count; | |
2627 | ||
b6b38f70 | 2628 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2629 | winCreateHardLinkRetry: |
2630 | ||
2631 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2632 | (void **) &pSMBr); | |
2633 | if (rc) | |
2634 | return rc; | |
2635 | ||
2636 | pSMB->SearchAttributes = | |
2637 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2638 | ATTR_DIRECTORY); | |
2639 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2640 | pSMB->ClusterCount = 0; | |
2641 | ||
2642 | pSMB->BufferFormat = 0x04; | |
2643 | ||
2644 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2645 | name_len = | |
b1a45695 | 2646 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2647 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2648 | name_len++; /* trailing null */ |
2649 | name_len *= 2; | |
fcc7c09d JL |
2650 | |
2651 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2652 | pSMB->OldFileName[name_len] = 0x04; | |
2653 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2654 | name_len2 = |
50c2f753 | 2655 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2656 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2657 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2658 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2659 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2660 | name_len = strnlen(fromName, PATH_MAX); |
2661 | name_len++; /* trailing null */ | |
2662 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2663 | name_len2 = strnlen(toName, PATH_MAX); | |
2664 | name_len2++; /* trailing null */ | |
2665 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2666 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2667 | name_len2++; /* trailing null */ | |
2668 | name_len2++; /* signature byte */ | |
2669 | } | |
2670 | ||
2671 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2672 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2673 | pSMB->ByteCount = cpu_to_le16(count); |
2674 | ||
2675 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2676 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2677 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2678 | if (rc) |
b6b38f70 | 2679 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2680 | |
1da177e4 LT |
2681 | cifs_buf_release(pSMB); |
2682 | if (rc == -EAGAIN) | |
2683 | goto winCreateHardLinkRetry; | |
2684 | ||
2685 | return rc; | |
2686 | } | |
2687 | ||
2688 | int | |
96daf2b0 | 2689 | CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *tcon, |
460b9696 | 2690 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2691 | const struct nls_table *nls_codepage) |
2692 | { | |
2693 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2694 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2695 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2696 | int rc = 0; | |
2697 | int bytes_returned; | |
2698 | int name_len; | |
2699 | __u16 params, byte_count; | |
460b9696 | 2700 | char *data_start; |
1da177e4 | 2701 | |
b6b38f70 | 2702 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2703 | |
2704 | querySymLinkRetry: | |
2705 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2706 | (void **) &pSMBr); | |
2707 | if (rc) | |
2708 | return rc; | |
2709 | ||
2710 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2711 | name_len = | |
50c2f753 SF |
2712 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2713 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2714 | name_len++; /* trailing null */ |
2715 | name_len *= 2; | |
50c2f753 | 2716 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2717 | name_len = strnlen(searchName, PATH_MAX); |
2718 | name_len++; /* trailing null */ | |
2719 | strncpy(pSMB->FileName, searchName, name_len); | |
2720 | } | |
2721 | ||
2722 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2723 | pSMB->TotalDataCount = 0; | |
2724 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2725 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2726 | pSMB->MaxSetupCount = 0; |
2727 | pSMB->Reserved = 0; | |
2728 | pSMB->Flags = 0; | |
2729 | pSMB->Timeout = 0; | |
2730 | pSMB->Reserved2 = 0; | |
2731 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2732 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2733 | pSMB->DataCount = 0; |
2734 | pSMB->DataOffset = 0; | |
2735 | pSMB->SetupCount = 1; | |
2736 | pSMB->Reserved3 = 0; | |
2737 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2738 | byte_count = params + 1 /* pad */ ; | |
2739 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2740 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2741 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2742 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2743 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2744 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2745 | ||
2746 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2747 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2748 | if (rc) { | |
b6b38f70 | 2749 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
2750 | } else { |
2751 | /* decode response */ | |
2752 | ||
2753 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2754 | /* BB also check enough total bytes returned */ |
820a803f | 2755 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2756 | rc = -EIO; |
1da177e4 | 2757 | else { |
0e0d2cf3 | 2758 | bool is_unicode; |
460b9696 JL |
2759 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2760 | ||
2761 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2762 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2763 | |
0e0d2cf3 SF |
2764 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2765 | is_unicode = true; | |
2766 | else | |
2767 | is_unicode = false; | |
2768 | ||
737b758c | 2769 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2770 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2771 | is_unicode, nls_codepage); |
8b6427a2 | 2772 | if (!*symlinkinfo) |
460b9696 | 2773 | rc = -ENOMEM; |
1da177e4 LT |
2774 | } |
2775 | } | |
2776 | cifs_buf_release(pSMB); | |
2777 | if (rc == -EAGAIN) | |
2778 | goto querySymLinkRetry; | |
2779 | return rc; | |
2780 | } | |
2781 | ||
c52a9554 SF |
2782 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
2783 | /* | |
2784 | * Recent Windows versions now create symlinks more frequently | |
2785 | * and they use the "reparse point" mechanism below. We can of course | |
2786 | * do symlinks nicely to Samba and other servers which support the | |
2787 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2788 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2789 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2790 | * In the interim this code has been moved to its own config option so | |
2791 | * it is not compiled in by default until callers fixed up and more tested. | |
2792 | */ | |
1da177e4 | 2793 | int |
96daf2b0 | 2794 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2795 | const unsigned char *searchName, |
50c2f753 | 2796 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2797 | const struct nls_table *nls_codepage) |
2798 | { | |
2799 | int rc = 0; | |
2800 | int bytes_returned; | |
50c2f753 SF |
2801 | struct smb_com_transaction_ioctl_req *pSMB; |
2802 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 2803 | |
b6b38f70 | 2804 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
2805 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2806 | (void **) &pSMBr); | |
2807 | if (rc) | |
2808 | return rc; | |
2809 | ||
2810 | pSMB->TotalParameterCount = 0 ; | |
2811 | pSMB->TotalDataCount = 0; | |
2812 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2813 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 2814 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
2815 | pSMB->MaxSetupCount = 4; |
2816 | pSMB->Reserved = 0; | |
2817 | pSMB->ParameterOffset = 0; | |
2818 | pSMB->DataCount = 0; | |
2819 | pSMB->DataOffset = 0; | |
2820 | pSMB->SetupCount = 4; | |
2821 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2822 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2823 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2824 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2825 | pSMB->IsRootFlag = 0; | |
2826 | pSMB->Fid = fid; /* file handle always le */ | |
2827 | pSMB->ByteCount = 0; | |
2828 | ||
2829 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2830 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2831 | if (rc) { | |
b6b38f70 | 2832 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
2833 | } else { /* decode response */ |
2834 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2835 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
2836 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
2837 | /* BB also check enough total bytes returned */ | |
1da177e4 | 2838 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
2839 | goto qreparse_out; |
2840 | } | |
2841 | if (data_count && (data_count < 2048)) { | |
2842 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 2843 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 2844 | |
afe48c31 | 2845 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2846 | (struct reparse_data *) |
2847 | ((char *)&pSMBr->hdr.Protocol | |
2848 | + data_offset); | |
afe48c31 SF |
2849 | if ((char *)reparse_buf >= end_of_smb) { |
2850 | rc = -EIO; | |
2851 | goto qreparse_out; | |
2852 | } | |
2853 | if ((reparse_buf->LinkNamesBuf + | |
2854 | reparse_buf->TargetNameOffset + | |
2855 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 2856 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
2857 | rc = -EIO; |
2858 | goto qreparse_out; | |
2859 | } | |
50c2f753 | 2860 | |
afe48c31 SF |
2861 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2862 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2863 | (reparse_buf->LinkNamesBuf + |
2864 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2865 | buflen, |
2866 | reparse_buf->TargetNameLen, | |
2867 | nls_codepage, 0); | |
2868 | } else { /* ASCII names */ | |
2869 | strncpy(symlinkinfo, | |
2870 | reparse_buf->LinkNamesBuf + | |
2871 | reparse_buf->TargetNameOffset, | |
2872 | min_t(const int, buflen, | |
2873 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2874 | } |
afe48c31 SF |
2875 | } else { |
2876 | rc = -EIO; | |
b6b38f70 JP |
2877 | cFYI(1, "Invalid return data count on " |
2878 | "get reparse info ioctl"); | |
1da177e4 | 2879 | } |
afe48c31 SF |
2880 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2881 | does not go off the end of the buffer */ | |
b6b38f70 | 2882 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 2883 | } |
989c7e51 | 2884 | |
1da177e4 | 2885 | qreparse_out: |
4a6d87f1 | 2886 | cifs_buf_release(pSMB); |
1da177e4 LT |
2887 | |
2888 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2889 | since file handle passed in no longer valid */ | |
2890 | ||
2891 | return rc; | |
2892 | } | |
c52a9554 | 2893 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
2894 | |
2895 | #ifdef CONFIG_CIFS_POSIX | |
2896 | ||
2897 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2898 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2899 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2900 | { |
2901 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2902 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2903 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2904 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 2905 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
2906 | |
2907 | return; | |
2908 | } | |
2909 | ||
2910 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2911 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2912 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2913 | { |
2914 | int size = 0; | |
2915 | int i; | |
2916 | __u16 count; | |
50c2f753 SF |
2917 | struct cifs_posix_ace *pACE; |
2918 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2919 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2920 | |
2921 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2922 | return -EOPNOTSUPP; | |
2923 | ||
790fe579 | 2924 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2925 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2926 | pACE = &cifs_acl->ace_array[0]; | |
2927 | size = sizeof(struct cifs_posix_acl); | |
2928 | size += sizeof(struct cifs_posix_ace) * count; | |
2929 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2930 | if (size_of_data_area < size) { |
b6b38f70 JP |
2931 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
2932 | size_of_data_area, size); | |
1da177e4 LT |
2933 | return -EINVAL; |
2934 | } | |
790fe579 | 2935 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2936 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2937 | size = sizeof(struct cifs_posix_acl); | |
2938 | size += sizeof(struct cifs_posix_ace) * count; | |
2939 | /* skip past access ACEs to get to default ACEs */ | |
2940 | pACE = &cifs_acl->ace_array[count]; | |
2941 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2942 | size += sizeof(struct cifs_posix_ace) * count; | |
2943 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2944 | if (size_of_data_area < size) |
1da177e4 LT |
2945 | return -EINVAL; |
2946 | } else { | |
2947 | /* illegal type */ | |
2948 | return -EINVAL; | |
2949 | } | |
2950 | ||
2951 | size = posix_acl_xattr_size(count); | |
790fe579 | 2952 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2953 | /* used to query ACL EA size */ |
790fe579 | 2954 | } else if (size > buflen) { |
1da177e4 LT |
2955 | return -ERANGE; |
2956 | } else /* buffer big enough */ { | |
ff7feac9 | 2957 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2958 | for (i = 0; i < count ; i++) { |
2959 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2960 | pACE++; | |
1da177e4 LT |
2961 | } |
2962 | } | |
2963 | return size; | |
2964 | } | |
2965 | ||
50c2f753 SF |
2966 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2967 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2968 | { |
2969 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2970 | ||
ff7feac9 SF |
2971 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2972 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2973 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2974 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2975 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2976 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2977 | } else |
ff7feac9 | 2978 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 2979 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
2980 | return rc; |
2981 | } | |
2982 | ||
2983 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2984 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2985 | const int buflen, const int acl_type) | |
1da177e4 LT |
2986 | { |
2987 | __u16 rc = 0; | |
50c2f753 SF |
2988 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2989 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2990 | int count; |
2991 | int i; | |
2992 | ||
790fe579 | 2993 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2994 | return 0; |
2995 | ||
2996 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 2997 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 2998 | "version of %d", |
b6b38f70 | 2999 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 3000 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3001 | cFYI(1, "unknown POSIX ACL version %d", |
3002 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3003 | return 0; |
3004 | } | |
3005 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3006 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3007 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3008 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3009 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3010 | else { |
b6b38f70 | 3011 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3012 | return 0; |
3013 | } | |
50c2f753 | 3014 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3015 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3016 | &local_acl->a_entries[i]); | |
790fe579 | 3017 | if (rc != 0) { |
1da177e4 LT |
3018 | /* ACE not converted */ |
3019 | break; | |
3020 | } | |
3021 | } | |
790fe579 | 3022 | if (rc == 0) { |
1da177e4 LT |
3023 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3024 | rc += sizeof(struct cifs_posix_acl); | |
3025 | /* BB add check to make sure ACL does not overflow SMB */ | |
3026 | } | |
3027 | return rc; | |
3028 | } | |
3029 | ||
3030 | int | |
96daf2b0 | 3031 | CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3032 | const unsigned char *searchName, |
3033 | char *acl_inf, const int buflen, const int acl_type, | |
3034 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3035 | { |
3036 | /* SMB_QUERY_POSIX_ACL */ | |
3037 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3038 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3039 | int rc = 0; | |
3040 | int bytes_returned; | |
3041 | int name_len; | |
3042 | __u16 params, byte_count; | |
50c2f753 | 3043 | |
b6b38f70 | 3044 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3045 | |
3046 | queryAclRetry: | |
3047 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3048 | (void **) &pSMBr); | |
3049 | if (rc) | |
3050 | return rc; | |
50c2f753 | 3051 | |
1da177e4 LT |
3052 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3053 | name_len = | |
50c2f753 | 3054 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3055 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3056 | name_len++; /* trailing null */ |
3057 | name_len *= 2; | |
3058 | pSMB->FileName[name_len] = 0; | |
3059 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3060 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3061 | name_len = strnlen(searchName, PATH_MAX); |
3062 | name_len++; /* trailing null */ | |
3063 | strncpy(pSMB->FileName, searchName, name_len); | |
3064 | } | |
3065 | ||
3066 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3067 | pSMB->TotalDataCount = 0; | |
3068 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3069 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3070 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3071 | pSMB->MaxSetupCount = 0; | |
3072 | pSMB->Reserved = 0; | |
3073 | pSMB->Flags = 0; | |
3074 | pSMB->Timeout = 0; | |
3075 | pSMB->Reserved2 = 0; | |
3076 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3077 | offsetof(struct smb_com_transaction2_qpi_req, |
3078 | InformationLevel) - 4); | |
1da177e4 LT |
3079 | pSMB->DataCount = 0; |
3080 | pSMB->DataOffset = 0; | |
3081 | pSMB->SetupCount = 1; | |
3082 | pSMB->Reserved3 = 0; | |
3083 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3084 | byte_count = params + 1 /* pad */ ; | |
3085 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3086 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3087 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3088 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3089 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3090 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3091 | ||
3092 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3093 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 3094 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 3095 | if (rc) { |
b6b38f70 | 3096 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3097 | } else { |
3098 | /* decode response */ | |
50c2f753 | 3099 | |
1da177e4 | 3100 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3101 | /* BB also check enough total bytes returned */ |
820a803f | 3102 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3103 | rc = -EIO; /* bad smb */ |
3104 | else { | |
3105 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3106 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3107 | rc = cifs_copy_posix_acl(acl_inf, | |
3108 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3109 | buflen, acl_type, count); |
1da177e4 LT |
3110 | } |
3111 | } | |
3112 | cifs_buf_release(pSMB); | |
3113 | if (rc == -EAGAIN) | |
3114 | goto queryAclRetry; | |
3115 | return rc; | |
3116 | } | |
3117 | ||
3118 | int | |
96daf2b0 | 3119 | CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3120 | const unsigned char *fileName, |
3121 | const char *local_acl, const int buflen, | |
3122 | const int acl_type, | |
3123 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3124 | { |
3125 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3126 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3127 | char *parm_data; | |
3128 | int name_len; | |
3129 | int rc = 0; | |
3130 | int bytes_returned = 0; | |
3131 | __u16 params, byte_count, data_count, param_offset, offset; | |
3132 | ||
b6b38f70 | 3133 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3134 | setAclRetry: |
3135 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3136 | (void **) &pSMBr); |
1da177e4 LT |
3137 | if (rc) |
3138 | return rc; | |
3139 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3140 | name_len = | |
50c2f753 | 3141 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 3142 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3143 | name_len++; /* trailing null */ |
3144 | name_len *= 2; | |
50c2f753 | 3145 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3146 | name_len = strnlen(fileName, PATH_MAX); |
3147 | name_len++; /* trailing null */ | |
3148 | strncpy(pSMB->FileName, fileName, name_len); | |
3149 | } | |
3150 | params = 6 + name_len; | |
3151 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3152 | /* BB find max SMB size from sess */ |
3153 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3154 | pSMB->MaxSetupCount = 0; |
3155 | pSMB->Reserved = 0; | |
3156 | pSMB->Flags = 0; | |
3157 | pSMB->Timeout = 0; | |
3158 | pSMB->Reserved2 = 0; | |
3159 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3160 | InformationLevel) - 4; |
1da177e4 LT |
3161 | offset = param_offset + params; |
3162 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3163 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3164 | ||
3165 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3166 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3167 | |
790fe579 | 3168 | if (data_count == 0) { |
1da177e4 LT |
3169 | rc = -EOPNOTSUPP; |
3170 | goto setACLerrorExit; | |
3171 | } | |
3172 | pSMB->DataOffset = cpu_to_le16(offset); | |
3173 | pSMB->SetupCount = 1; | |
3174 | pSMB->Reserved3 = 0; | |
3175 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3176 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3177 | byte_count = 3 /* pad */ + params + data_count; | |
3178 | pSMB->DataCount = cpu_to_le16(data_count); | |
3179 | pSMB->TotalDataCount = pSMB->DataCount; | |
3180 | pSMB->ParameterCount = cpu_to_le16(params); | |
3181 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3182 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3183 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3184 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3185 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3186 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3187 | if (rc) |
b6b38f70 | 3188 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3189 | |
3190 | setACLerrorExit: | |
3191 | cifs_buf_release(pSMB); | |
3192 | if (rc == -EAGAIN) | |
3193 | goto setAclRetry; | |
3194 | return rc; | |
3195 | } | |
3196 | ||
f654bac2 SF |
3197 | /* BB fix tabs in this function FIXME BB */ |
3198 | int | |
96daf2b0 | 3199 | CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3200 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3201 | { |
50c2f753 SF |
3202 | int rc = 0; |
3203 | struct smb_t2_qfi_req *pSMB = NULL; | |
3204 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3205 | int bytes_returned; | |
3206 | __u16 params, byte_count; | |
f654bac2 | 3207 | |
b6b38f70 | 3208 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3209 | if (tcon == NULL) |
3210 | return -ENODEV; | |
f654bac2 SF |
3211 | |
3212 | GetExtAttrRetry: | |
790fe579 SF |
3213 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3214 | (void **) &pSMBr); | |
3215 | if (rc) | |
3216 | return rc; | |
f654bac2 | 3217 | |
ad7a2926 | 3218 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3219 | pSMB->t2.TotalDataCount = 0; |
3220 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3221 | /* BB find exact max data count below from sess structure BB */ | |
3222 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3223 | pSMB->t2.MaxSetupCount = 0; | |
3224 | pSMB->t2.Reserved = 0; | |
3225 | pSMB->t2.Flags = 0; | |
3226 | pSMB->t2.Timeout = 0; | |
3227 | pSMB->t2.Reserved2 = 0; | |
3228 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3229 | Fid) - 4); | |
3230 | pSMB->t2.DataCount = 0; | |
3231 | pSMB->t2.DataOffset = 0; | |
3232 | pSMB->t2.SetupCount = 1; | |
3233 | pSMB->t2.Reserved3 = 0; | |
3234 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3235 | byte_count = params + 1 /* pad */ ; | |
3236 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3237 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3238 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3239 | pSMB->Pad = 0; | |
f654bac2 | 3240 | pSMB->Fid = netfid; |
be8e3b00 | 3241 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3242 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3243 | ||
3244 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3245 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3246 | if (rc) { | |
b6b38f70 | 3247 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3248 | } else { |
3249 | /* decode response */ | |
3250 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3251 | /* BB also check enough total bytes returned */ |
820a803f | 3252 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3253 | /* If rc should we check for EOPNOSUPP and |
3254 | disable the srvino flag? or in caller? */ | |
3255 | rc = -EIO; /* bad smb */ | |
3256 | else { | |
3257 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3258 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3259 | struct file_chattr_info *pfinfo; | |
3260 | /* BB Do we need a cast or hash here ? */ | |
3261 | if (count != 16) { | |
b6b38f70 | 3262 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3263 | rc = -EIO; |
3264 | goto GetExtAttrOut; | |
3265 | } | |
3266 | pfinfo = (struct file_chattr_info *) | |
3267 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3268 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3269 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3270 | } |
3271 | } | |
f654bac2 | 3272 | GetExtAttrOut: |
790fe579 SF |
3273 | cifs_buf_release(pSMB); |
3274 | if (rc == -EAGAIN) | |
3275 | goto GetExtAttrRetry; | |
3276 | return rc; | |
f654bac2 SF |
3277 | } |
3278 | ||
f654bac2 | 3279 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3280 | |
79df1bae JL |
3281 | #ifdef CONFIG_CIFS_ACL |
3282 | /* | |
3283 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3284 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3285 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3286 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3287 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3288 | * by caller | |
3289 | */ | |
3290 | static int | |
3291 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3292 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3293 | void **ret_buf) |
3294 | { | |
3295 | int rc; | |
3296 | __u32 temp_offset; | |
3297 | struct smb_com_ntransact_req *pSMB; | |
3298 | ||
3299 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3300 | (void **)&pSMB); | |
3301 | if (rc) | |
3302 | return rc; | |
3303 | *ret_buf = (void *)pSMB; | |
3304 | pSMB->Reserved = 0; | |
3305 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3306 | pSMB->TotalDataCount = 0; | |
c974befa | 3307 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3308 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3309 | pSMB->DataCount = pSMB->TotalDataCount; | |
3310 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3311 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3312 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3313 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3314 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3315 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3316 | return 0; | |
3317 | } | |
3318 | ||
3319 | static int | |
3320 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3321 | __u32 *pparmlen, __u32 *pdatalen) | |
3322 | { | |
3323 | char *end_of_smb; | |
3324 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3325 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3326 | u16 bcc; |
79df1bae JL |
3327 | |
3328 | *pdatalen = 0; | |
3329 | *pparmlen = 0; | |
3330 | ||
3331 | if (buf == NULL) | |
3332 | return -EINVAL; | |
3333 | ||
3334 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3335 | ||
820a803f JL |
3336 | bcc = get_bcc(&pSMBr->hdr); |
3337 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3338 | (char *)&pSMBr->ByteCount; |
3339 | ||
3340 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3341 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3342 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3343 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3344 | ||
3345 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3346 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3347 | ||
3348 | /* should we also check that parm and data areas do not overlap? */ | |
3349 | if (*ppparm > end_of_smb) { | |
3350 | cFYI(1, "parms start after end of smb"); | |
3351 | return -EINVAL; | |
3352 | } else if (parm_count + *ppparm > end_of_smb) { | |
3353 | cFYI(1, "parm end after end of smb"); | |
3354 | return -EINVAL; | |
3355 | } else if (*ppdata > end_of_smb) { | |
3356 | cFYI(1, "data starts after end of smb"); | |
3357 | return -EINVAL; | |
3358 | } else if (data_count + *ppdata > end_of_smb) { | |
3359 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3360 | *ppdata, data_count, (data_count + *ppdata), | |
3361 | end_of_smb, pSMBr); | |
3362 | return -EINVAL; | |
820a803f | 3363 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3364 | cFYI(1, "parm count and data count larger than SMB"); |
3365 | return -EINVAL; | |
3366 | } | |
3367 | *pdatalen = data_count; | |
3368 | *pparmlen = parm_count; | |
3369 | return 0; | |
3370 | } | |
3371 | ||
0a4b92c0 SF |
3372 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3373 | int | |
96daf2b0 | 3374 | CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3375 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3376 | { |
3377 | int rc = 0; | |
3378 | int buf_type = 0; | |
ad7a2926 | 3379 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3380 | struct kvec iov[1]; |
3381 | ||
b6b38f70 | 3382 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3383 | |
630f3f0c SF |
3384 | *pbuflen = 0; |
3385 | *acl_inf = NULL; | |
3386 | ||
b9c7a2bb | 3387 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3388 | 8 /* parm len */, tcon, (void **) &pSMB); |
3389 | if (rc) | |
3390 | return rc; | |
3391 | ||
3392 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3393 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3394 | pSMB->MaxSetupCount = 0; | |
3395 | pSMB->Fid = fid; /* file handle always le */ | |
3396 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3397 | CIFS_ACL_DACL); | |
3398 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3399 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3400 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3401 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3402 | |
a761ac57 | 3403 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3404 | 0); |
0a4b92c0 SF |
3405 | cifs_stats_inc(&tcon->num_acl_get); |
3406 | if (rc) { | |
b6b38f70 | 3407 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3408 | } else { /* decode response */ |
ad7a2926 | 3409 | __le32 *parm; |
630f3f0c SF |
3410 | __u32 parm_len; |
3411 | __u32 acl_len; | |
50c2f753 | 3412 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3413 | char *pdata; |
0a4b92c0 SF |
3414 | |
3415 | /* validate_nttransact */ | |
50c2f753 | 3416 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3417 | &pdata, &parm_len, pbuflen); |
790fe579 | 3418 | if (rc) |
0a4b92c0 SF |
3419 | goto qsec_out; |
3420 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3421 | ||
b6b38f70 | 3422 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3423 | |
3424 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3425 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3426 | *pbuflen = 0; |
0a4b92c0 SF |
3427 | goto qsec_out; |
3428 | } | |
3429 | ||
3430 | /* BB check that data area is minimum length and as big as acl_len */ | |
3431 | ||
af6f4612 | 3432 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3433 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3434 | cERROR(1, "acl length %d does not match %d", |
3435 | acl_len, *pbuflen); | |
630f3f0c SF |
3436 | if (*pbuflen > acl_len) |
3437 | *pbuflen = acl_len; | |
3438 | } | |
0a4b92c0 | 3439 | |
630f3f0c SF |
3440 | /* check if buffer is big enough for the acl |
3441 | header followed by the smallest SID */ | |
3442 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3443 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3444 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3445 | rc = -EINVAL; |
3446 | *pbuflen = 0; | |
3447 | } else { | |
3448 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3449 | if (*acl_inf == NULL) { | |
3450 | *pbuflen = 0; | |
3451 | rc = -ENOMEM; | |
3452 | } | |
3453 | memcpy(*acl_inf, pdata, *pbuflen); | |
3454 | } | |
0a4b92c0 SF |
3455 | } |
3456 | qsec_out: | |
790fe579 | 3457 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3458 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3459 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3460 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3461 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3462 | return rc; |
3463 | } | |
97837582 SF |
3464 | |
3465 | int | |
96daf2b0 | 3466 | CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3467 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3468 | { |
3469 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3470 | int rc = 0; | |
3471 | int bytes_returned = 0; | |
3472 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3473 | NTRANSACT_RSP *pSMBr = NULL; | |
3474 | ||
3475 | setCifsAclRetry: | |
3476 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3477 | (void **) &pSMBr); | |
3478 | if (rc) | |
3479 | return (rc); | |
3480 | ||
3481 | pSMB->MaxSetupCount = 0; | |
3482 | pSMB->Reserved = 0; | |
3483 | ||
3484 | param_count = 8; | |
3485 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3486 | data_count = acllen; | |
3487 | data_offset = param_offset + param_count; | |
3488 | byte_count = 3 /* pad */ + param_count; | |
3489 | ||
3490 | pSMB->DataCount = cpu_to_le32(data_count); | |
3491 | pSMB->TotalDataCount = pSMB->DataCount; | |
3492 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3493 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3494 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3495 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3496 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3497 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3498 | pSMB->SetupCount = 0; | |
3499 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3500 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3501 | ||
3502 | pSMB->Fid = fid; /* file handle always le */ | |
3503 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3504 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3505 | |
3506 | if (pntsd && acllen) { | |
3507 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3508 | (char *) pntsd, | |
3509 | acllen); | |
be8e3b00 | 3510 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3511 | } else |
be8e3b00 | 3512 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3513 | |
3514 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3515 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3516 | ||
b6b38f70 | 3517 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3518 | if (rc) |
b6b38f70 | 3519 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3520 | cifs_buf_release(pSMB); |
3521 | ||
3522 | if (rc == -EAGAIN) | |
3523 | goto setCifsAclRetry; | |
3524 | ||
3525 | return (rc); | |
3526 | } | |
3527 | ||
79df1bae | 3528 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3529 | |
6b8edfe0 SF |
3530 | /* Legacy Query Path Information call for lookup to old servers such |
3531 | as Win9x/WinME */ | |
96daf2b0 | 3532 | int SMBQueryInformation(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3533 | const unsigned char *searchName, |
3534 | FILE_ALL_INFO *pFinfo, | |
3535 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3536 | { |
ad7a2926 SF |
3537 | QUERY_INFORMATION_REQ *pSMB; |
3538 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3539 | int rc = 0; |
3540 | int bytes_returned; | |
3541 | int name_len; | |
3542 | ||
b6b38f70 | 3543 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3544 | QInfRetry: |
3545 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3546 | (void **) &pSMBr); |
6b8edfe0 SF |
3547 | if (rc) |
3548 | return rc; | |
3549 | ||
3550 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3551 | name_len = | |
50c2f753 SF |
3552 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3553 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3554 | name_len++; /* trailing null */ |
3555 | name_len *= 2; | |
50c2f753 | 3556 | } else { |
6b8edfe0 SF |
3557 | name_len = strnlen(searchName, PATH_MAX); |
3558 | name_len++; /* trailing null */ | |
3559 | strncpy(pSMB->FileName, searchName, name_len); | |
3560 | } | |
3561 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3562 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3563 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3564 | pSMB->ByteCount = cpu_to_le16(name_len); |
3565 | ||
3566 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3567 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3568 | if (rc) { |
b6b38f70 | 3569 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3570 | } else if (pFinfo) { |
1bd5bbcb SF |
3571 | struct timespec ts; |
3572 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3573 | |
3574 | /* decode response */ | |
1bd5bbcb | 3575 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3576 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3577 | ts.tv_nsec = 0; |
3578 | ts.tv_sec = time; | |
3579 | /* decode time fields */ | |
733f99ac | 3580 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3581 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3582 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3583 | pFinfo->AllocationSize = |
3584 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3585 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3586 | pFinfo->Attributes = | |
3587 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3588 | } else |
3589 | rc = -EIO; /* bad buffer passed in */ | |
3590 | ||
3591 | cifs_buf_release(pSMB); | |
3592 | ||
3593 | if (rc == -EAGAIN) | |
3594 | goto QInfRetry; | |
3595 | ||
3596 | return rc; | |
3597 | } | |
3598 | ||
bcd5357f | 3599 | int |
96daf2b0 | 3600 | CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3601 | u16 netfid, FILE_ALL_INFO *pFindData) |
3602 | { | |
3603 | struct smb_t2_qfi_req *pSMB = NULL; | |
3604 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3605 | int rc = 0; | |
3606 | int bytes_returned; | |
3607 | __u16 params, byte_count; | |
3608 | ||
3609 | QFileInfoRetry: | |
3610 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3611 | (void **) &pSMBr); | |
3612 | if (rc) | |
3613 | return rc; | |
3614 | ||
3615 | params = 2 /* level */ + 2 /* fid */; | |
3616 | pSMB->t2.TotalDataCount = 0; | |
3617 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3618 | /* BB find exact max data count below from sess structure BB */ | |
3619 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3620 | pSMB->t2.MaxSetupCount = 0; | |
3621 | pSMB->t2.Reserved = 0; | |
3622 | pSMB->t2.Flags = 0; | |
3623 | pSMB->t2.Timeout = 0; | |
3624 | pSMB->t2.Reserved2 = 0; | |
3625 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3626 | Fid) - 4); | |
3627 | pSMB->t2.DataCount = 0; | |
3628 | pSMB->t2.DataOffset = 0; | |
3629 | pSMB->t2.SetupCount = 1; | |
3630 | pSMB->t2.Reserved3 = 0; | |
3631 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3632 | byte_count = params + 1 /* pad */ ; | |
3633 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3634 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3635 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3636 | pSMB->Pad = 0; | |
3637 | pSMB->Fid = netfid; | |
be8e3b00 | 3638 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3639 | |
bcd5357f JL |
3640 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3641 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3642 | if (rc) { | |
f19159dc | 3643 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3644 | } else { /* decode response */ |
3645 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3646 | |
bcd5357f JL |
3647 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3648 | rc = -EIO; | |
820a803f | 3649 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3650 | rc = -EIO; /* bad smb */ |
3651 | else if (pFindData) { | |
3652 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3653 | memcpy((char *) pFindData, | |
3654 | (char *) &pSMBr->hdr.Protocol + | |
3655 | data_offset, sizeof(FILE_ALL_INFO)); | |
3656 | } else | |
3657 | rc = -ENOMEM; | |
3658 | } | |
3659 | cifs_buf_release(pSMB); | |
3660 | if (rc == -EAGAIN) | |
3661 | goto QFileInfoRetry; | |
6b8edfe0 | 3662 | |
bcd5357f JL |
3663 | return rc; |
3664 | } | |
6b8edfe0 | 3665 | |
1da177e4 | 3666 | int |
96daf2b0 | 3667 | CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3668 | const unsigned char *searchName, |
ad7a2926 | 3669 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3670 | int legacy /* old style infolevel */, |
737b758c | 3671 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3672 | { |
3673 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3674 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3675 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3676 | int rc = 0; | |
3677 | int bytes_returned; | |
3678 | int name_len; | |
3679 | __u16 params, byte_count; | |
3680 | ||
b6b38f70 | 3681 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3682 | QPathInfoRetry: |
3683 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3684 | (void **) &pSMBr); | |
3685 | if (rc) | |
3686 | return rc; | |
3687 | ||
3688 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3689 | name_len = | |
50c2f753 | 3690 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3691 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3692 | name_len++; /* trailing null */ |
3693 | name_len *= 2; | |
50c2f753 | 3694 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3695 | name_len = strnlen(searchName, PATH_MAX); |
3696 | name_len++; /* trailing null */ | |
3697 | strncpy(pSMB->FileName, searchName, name_len); | |
3698 | } | |
3699 | ||
50c2f753 | 3700 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3701 | pSMB->TotalDataCount = 0; |
3702 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3703 | /* BB find exact max SMB PDU from sess structure BB */ |
3704 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3705 | pSMB->MaxSetupCount = 0; |
3706 | pSMB->Reserved = 0; | |
3707 | pSMB->Flags = 0; | |
3708 | pSMB->Timeout = 0; | |
3709 | pSMB->Reserved2 = 0; | |
3710 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3711 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3712 | pSMB->DataCount = 0; |
3713 | pSMB->DataOffset = 0; | |
3714 | pSMB->SetupCount = 1; | |
3715 | pSMB->Reserved3 = 0; | |
3716 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3717 | byte_count = params + 1 /* pad */ ; | |
3718 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3719 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3720 | if (legacy) |
acf1a1b1 SF |
3721 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3722 | else | |
3723 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3724 | pSMB->Reserved4 = 0; |
be8e3b00 | 3725 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3726 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3727 | ||
3728 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3729 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3730 | if (rc) { | |
b6b38f70 | 3731 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3732 | } else { /* decode response */ |
3733 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3734 | ||
acf1a1b1 SF |
3735 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3736 | rc = -EIO; | |
820a803f | 3737 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3738 | rc = -EIO; /* bad smb */ |
820a803f | 3739 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3740 | rc = -EIO; /* 24 or 26 expected but we do not read |
3741 | last field */ | |
3742 | else if (pFindData) { | |
acf1a1b1 | 3743 | int size; |
1da177e4 | 3744 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3745 | |
3746 | /* On legacy responses we do not read the last field, | |
3747 | EAsize, fortunately since it varies by subdialect and | |
3748 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3749 | bytes depending but we don't care here */ | |
3750 | if (legacy) | |
acf1a1b1 SF |
3751 | size = sizeof(FILE_INFO_STANDARD); |
3752 | else | |
3753 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3754 | memcpy((char *) pFindData, |
3755 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3756 | data_offset, size); |
1da177e4 LT |
3757 | } else |
3758 | rc = -ENOMEM; | |
3759 | } | |
3760 | cifs_buf_release(pSMB); | |
3761 | if (rc == -EAGAIN) | |
3762 | goto QPathInfoRetry; | |
3763 | ||
3764 | return rc; | |
3765 | } | |
3766 | ||
c8634fd3 | 3767 | int |
96daf2b0 | 3768 | CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
3769 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
3770 | { | |
3771 | struct smb_t2_qfi_req *pSMB = NULL; | |
3772 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3773 | int rc = 0; | |
3774 | int bytes_returned; | |
3775 | __u16 params, byte_count; | |
3776 | ||
3777 | UnixQFileInfoRetry: | |
3778 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3779 | (void **) &pSMBr); | |
3780 | if (rc) | |
3781 | return rc; | |
3782 | ||
3783 | params = 2 /* level */ + 2 /* fid */; | |
3784 | pSMB->t2.TotalDataCount = 0; | |
3785 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3786 | /* BB find exact max data count below from sess structure BB */ | |
3787 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3788 | pSMB->t2.MaxSetupCount = 0; | |
3789 | pSMB->t2.Reserved = 0; | |
3790 | pSMB->t2.Flags = 0; | |
3791 | pSMB->t2.Timeout = 0; | |
3792 | pSMB->t2.Reserved2 = 0; | |
3793 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3794 | Fid) - 4); | |
3795 | pSMB->t2.DataCount = 0; | |
3796 | pSMB->t2.DataOffset = 0; | |
3797 | pSMB->t2.SetupCount = 1; | |
3798 | pSMB->t2.Reserved3 = 0; | |
3799 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3800 | byte_count = params + 1 /* pad */ ; | |
3801 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3802 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3803 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3804 | pSMB->Pad = 0; | |
3805 | pSMB->Fid = netfid; | |
be8e3b00 | 3806 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
3807 | |
3808 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3809 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3810 | if (rc) { | |
f19159dc | 3811 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3812 | } else { /* decode response */ |
3813 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3814 | ||
820a803f | 3815 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 3816 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3817 | "Unix Extensions can be disabled on mount " |
f19159dc | 3818 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3819 | rc = -EIO; /* bad smb */ |
3820 | } else { | |
3821 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3822 | memcpy((char *) pFindData, | |
3823 | (char *) &pSMBr->hdr.Protocol + | |
3824 | data_offset, | |
3825 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3826 | } | |
3827 | } | |
3828 | ||
3829 | cifs_buf_release(pSMB); | |
3830 | if (rc == -EAGAIN) | |
3831 | goto UnixQFileInfoRetry; | |
3832 | ||
3833 | return rc; | |
3834 | } | |
3835 | ||
1da177e4 | 3836 | int |
96daf2b0 | 3837 | CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3838 | const unsigned char *searchName, |
582d21e5 | 3839 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3840 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3841 | { |
3842 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3843 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3844 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3845 | int rc = 0; | |
3846 | int bytes_returned = 0; | |
3847 | int name_len; | |
3848 | __u16 params, byte_count; | |
3849 | ||
b6b38f70 | 3850 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3851 | UnixQPathInfoRetry: |
3852 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3853 | (void **) &pSMBr); | |
3854 | if (rc) | |
3855 | return rc; | |
3856 | ||
3857 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3858 | name_len = | |
b1a45695 | 3859 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3860 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3861 | name_len++; /* trailing null */ |
3862 | name_len *= 2; | |
50c2f753 | 3863 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3864 | name_len = strnlen(searchName, PATH_MAX); |
3865 | name_len++; /* trailing null */ | |
3866 | strncpy(pSMB->FileName, searchName, name_len); | |
3867 | } | |
3868 | ||
50c2f753 | 3869 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3870 | pSMB->TotalDataCount = 0; |
3871 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3872 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3873 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3874 | pSMB->MaxSetupCount = 0; |
3875 | pSMB->Reserved = 0; | |
3876 | pSMB->Flags = 0; | |
3877 | pSMB->Timeout = 0; | |
3878 | pSMB->Reserved2 = 0; | |
3879 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3880 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3881 | pSMB->DataCount = 0; |
3882 | pSMB->DataOffset = 0; | |
3883 | pSMB->SetupCount = 1; | |
3884 | pSMB->Reserved3 = 0; | |
3885 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3886 | byte_count = params + 1 /* pad */ ; | |
3887 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3888 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3889 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3890 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3891 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3892 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3893 | ||
3894 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3895 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3896 | if (rc) { | |
b6b38f70 | 3897 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3898 | } else { /* decode response */ |
3899 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3900 | ||
820a803f | 3901 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 3902 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3903 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3904 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3905 | rc = -EIO; /* bad smb */ |
3906 | } else { | |
3907 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3908 | memcpy((char *) pFindData, | |
3909 | (char *) &pSMBr->hdr.Protocol + | |
3910 | data_offset, | |
630f3f0c | 3911 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3912 | } |
3913 | } | |
3914 | cifs_buf_release(pSMB); | |
3915 | if (rc == -EAGAIN) | |
3916 | goto UnixQPathInfoRetry; | |
3917 | ||
3918 | return rc; | |
3919 | } | |
3920 | ||
1da177e4 LT |
3921 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3922 | int | |
96daf2b0 | 3923 | CIFSFindFirst(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 3924 | const char *searchName, |
1da177e4 | 3925 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3926 | __u16 *pnetfid, |
3927 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3928 | { |
3929 | /* level 257 SMB_ */ | |
3930 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3931 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3932 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3933 | int rc = 0; |
3934 | int bytes_returned = 0; | |
3935 | int name_len; | |
3936 | __u16 params, byte_count; | |
3937 | ||
b6b38f70 | 3938 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3939 | |
3940 | findFirstRetry: | |
3941 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3942 | (void **) &pSMBr); | |
3943 | if (rc) | |
3944 | return rc; | |
3945 | ||
3946 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3947 | name_len = | |
50c2f753 | 3948 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3949 | PATH_MAX, nls_codepage, remap); |
3950 | /* We can not add the asterik earlier in case | |
3951 | it got remapped to 0xF03A as if it were part of the | |
3952 | directory name instead of a wildcard */ | |
1da177e4 | 3953 | name_len *= 2; |
ac67055e | 3954 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3955 | pSMB->FileName[name_len+1] = 0; |
3956 | pSMB->FileName[name_len+2] = '*'; | |
3957 | pSMB->FileName[name_len+3] = 0; | |
3958 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3959 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3960 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3961 | name_len += 2; |
1da177e4 LT |
3962 | } else { /* BB add check for overrun of SMB buf BB */ |
3963 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3964 | /* BB fix here and in unicode clause above ie |
790fe579 | 3965 | if (name_len > buffersize-header) |
1da177e4 LT |
3966 | free buffer exit; BB */ |
3967 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3968 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3969 | pSMB->FileName[name_len+1] = '*'; |
3970 | pSMB->FileName[name_len+2] = 0; | |
3971 | name_len += 3; | |
1da177e4 LT |
3972 | } |
3973 | ||
3974 | params = 12 + name_len /* includes null */ ; | |
3975 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3976 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 3977 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3978 | pSMB->MaxSetupCount = 0; |
3979 | pSMB->Reserved = 0; | |
3980 | pSMB->Flags = 0; | |
3981 | pSMB->Timeout = 0; | |
3982 | pSMB->Reserved2 = 0; | |
3983 | byte_count = params + 1 /* pad */ ; | |
3984 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3985 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3986 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3987 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3988 | - 4); | |
1da177e4 LT |
3989 | pSMB->DataCount = 0; |
3990 | pSMB->DataOffset = 0; | |
3991 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3992 | pSMB->Reserved3 = 0; | |
3993 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3994 | pSMB->SearchAttributes = | |
3995 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3996 | ATTR_DIRECTORY); | |
50c2f753 SF |
3997 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3998 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3999 | CIFS_SEARCH_RETURN_RESUME); |
4000 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
4001 | ||
4002 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4003 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4004 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4005 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4006 | ||
4007 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4008 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4009 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 4010 | |
88274815 SF |
4011 | if (rc) {/* BB add logic to retry regular search if Unix search |
4012 | rejected unexpectedly by server */ | |
1da177e4 | 4013 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4014 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4015 | |
88274815 | 4016 | cifs_buf_release(pSMB); |
1da177e4 LT |
4017 | |
4018 | /* BB eventually could optimize out free and realloc of buf */ | |
4019 | /* for this case */ | |
4020 | if (rc == -EAGAIN) | |
4021 | goto findFirstRetry; | |
4022 | } else { /* decode response */ | |
4023 | /* BB remember to free buffer if error BB */ | |
4024 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4025 | if (rc == 0) { |
b77d753c SF |
4026 | unsigned int lnoff; |
4027 | ||
1da177e4 | 4028 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4029 | psrch_inf->unicode = true; |
1da177e4 | 4030 | else |
4b18f2a9 | 4031 | psrch_inf->unicode = false; |
1da177e4 LT |
4032 | |
4033 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4034 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4035 | psrch_inf->srch_entries_start = |
4036 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4037 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4038 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4039 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4040 | ||
790fe579 | 4041 | if (parms->EndofSearch) |
4b18f2a9 | 4042 | psrch_inf->endOfSearch = true; |
1da177e4 | 4043 | else |
4b18f2a9 | 4044 | psrch_inf->endOfSearch = false; |
1da177e4 | 4045 | |
50c2f753 SF |
4046 | psrch_inf->entries_in_buffer = |
4047 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4048 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4049 | psrch_inf->entries_in_buffer; |
b77d753c | 4050 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4051 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4052 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4053 | psrch_inf->last_entry = NULL; |
4054 | return rc; | |
4055 | } | |
4056 | ||
0752f152 | 4057 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4058 | lnoff; |
4059 | ||
1da177e4 LT |
4060 | *pnetfid = parms->SearchHandle; |
4061 | } else { | |
4062 | cifs_buf_release(pSMB); | |
4063 | } | |
4064 | } | |
4065 | ||
4066 | return rc; | |
4067 | } | |
4068 | ||
96daf2b0 | 4069 | int CIFSFindNext(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4070 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
4071 | { |
4072 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4073 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4074 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4075 | char *response_data; |
4076 | int rc = 0; | |
9438fabb JL |
4077 | int bytes_returned; |
4078 | unsigned int name_len; | |
1da177e4 LT |
4079 | __u16 params, byte_count; |
4080 | ||
b6b38f70 | 4081 | cFYI(1, "In FindNext"); |
1da177e4 | 4082 | |
4b18f2a9 | 4083 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4084 | return -ENOENT; |
4085 | ||
4086 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4087 | (void **) &pSMBr); | |
4088 | if (rc) | |
4089 | return rc; | |
4090 | ||
50c2f753 | 4091 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4092 | byte_count = 0; |
4093 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4094 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4095 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4096 | pSMB->MaxSetupCount = 0; |
4097 | pSMB->Reserved = 0; | |
4098 | pSMB->Flags = 0; | |
4099 | pSMB->Timeout = 0; | |
4100 | pSMB->Reserved2 = 0; | |
4101 | pSMB->ParameterOffset = cpu_to_le16( | |
4102 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4103 | pSMB->DataCount = 0; | |
4104 | pSMB->DataOffset = 0; | |
4105 | pSMB->SetupCount = 1; | |
4106 | pSMB->Reserved3 = 0; | |
4107 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4108 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4109 | pSMB->SearchCount = | |
630f3f0c | 4110 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4111 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4112 | pSMB->ResumeKey = psrch_inf->resume_key; | |
4113 | pSMB->SearchFlags = | |
4114 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
4115 | ||
4116 | name_len = psrch_inf->resume_name_len; | |
4117 | params += name_len; | |
790fe579 | 4118 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4119 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4120 | byte_count += name_len; | |
ef6724e3 SF |
4121 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4122 | pSMB->ResumeFileName[name_len] = 0; | |
4123 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4124 | } else { |
4125 | rc = -EINVAL; | |
4126 | goto FNext2_err_exit; | |
4127 | } | |
4128 | byte_count = params + 1 /* pad */ ; | |
4129 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4130 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4131 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4132 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4133 | |
1da177e4 LT |
4134 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4135 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4136 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
4137 | if (rc) { |
4138 | if (rc == -EBADF) { | |
4b18f2a9 | 4139 | psrch_inf->endOfSearch = true; |
6353450a | 4140 | cifs_buf_release(pSMB); |
50c2f753 | 4141 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4142 | } else |
b6b38f70 | 4143 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4144 | } else { /* decode response */ |
4145 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4146 | |
790fe579 | 4147 | if (rc == 0) { |
b77d753c SF |
4148 | unsigned int lnoff; |
4149 | ||
1da177e4 LT |
4150 | /* BB fixme add lock for file (srch_info) struct here */ |
4151 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4152 | psrch_inf->unicode = true; |
1da177e4 | 4153 | else |
4b18f2a9 | 4154 | psrch_inf->unicode = false; |
1da177e4 LT |
4155 | response_data = (char *) &pSMBr->hdr.Protocol + |
4156 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4157 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4158 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4159 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4160 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4161 | cifs_small_buf_release( |
4162 | psrch_inf->ntwrk_buf_start); | |
4163 | else | |
4164 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4165 | psrch_inf->srch_entries_start = response_data; |
4166 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4167 | psrch_inf->smallBuf = 0; |
790fe579 | 4168 | if (parms->EndofSearch) |
4b18f2a9 | 4169 | psrch_inf->endOfSearch = true; |
1da177e4 | 4170 | else |
4b18f2a9 | 4171 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4172 | psrch_inf->entries_in_buffer = |
4173 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4174 | psrch_inf->index_of_last_entry += |
4175 | psrch_inf->entries_in_buffer; | |
b77d753c | 4176 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4177 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4178 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4179 | psrch_inf->last_entry = NULL; |
4180 | return rc; | |
4181 | } else | |
4182 | psrch_inf->last_entry = | |
4183 | psrch_inf->srch_entries_start + lnoff; | |
4184 | ||
b6b38f70 JP |
4185 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4186 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4187 | |
4188 | /* BB fixme add unlock here */ | |
4189 | } | |
4190 | ||
4191 | } | |
4192 | ||
4193 | /* BB On error, should we leave previous search buf (and count and | |
4194 | last entry fields) intact or free the previous one? */ | |
4195 | ||
4196 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4197 | since file handle passed in no longer valid */ | |
4198 | FNext2_err_exit: | |
4199 | if (rc != 0) | |
4200 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4201 | return rc; |
4202 | } | |
4203 | ||
4204 | int | |
96daf2b0 | 4205 | CIFSFindClose(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4206 | const __u16 searchHandle) |
1da177e4 LT |
4207 | { |
4208 | int rc = 0; | |
4209 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4210 | |
b6b38f70 | 4211 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4212 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4213 | ||
4214 | /* no sense returning error if session restarted | |
4215 | as file handle has been closed */ | |
790fe579 | 4216 | if (rc == -EAGAIN) |
1da177e4 LT |
4217 | return 0; |
4218 | if (rc) | |
4219 | return rc; | |
4220 | ||
1da177e4 LT |
4221 | pSMB->FileID = searchHandle; |
4222 | pSMB->ByteCount = 0; | |
133672ef | 4223 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4224 | if (rc) |
b6b38f70 | 4225 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4226 | |
a4544347 | 4227 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
4228 | |
4229 | /* Since session is dead, search handle closed on server already */ | |
4230 | if (rc == -EAGAIN) | |
4231 | rc = 0; | |
4232 | ||
4233 | return rc; | |
4234 | } | |
4235 | ||
1da177e4 | 4236 | int |
96daf2b0 | 4237 | CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4238 | const unsigned char *searchName, |
ad7a2926 | 4239 | __u64 *inode_number, |
50c2f753 | 4240 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4241 | { |
4242 | int rc = 0; | |
4243 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4244 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4245 | int name_len, bytes_returned; | |
4246 | __u16 params, byte_count; | |
4247 | ||
b6b38f70 | 4248 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 4249 | if (tcon == NULL) |
50c2f753 | 4250 | return -ENODEV; |
1da177e4 LT |
4251 | |
4252 | GetInodeNumberRetry: | |
4253 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4254 | (void **) &pSMBr); |
1da177e4 LT |
4255 | if (rc) |
4256 | return rc; | |
4257 | ||
1da177e4 LT |
4258 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4259 | name_len = | |
b1a45695 | 4260 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 4261 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4262 | name_len++; /* trailing null */ |
4263 | name_len *= 2; | |
50c2f753 | 4264 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4265 | name_len = strnlen(searchName, PATH_MAX); |
4266 | name_len++; /* trailing null */ | |
4267 | strncpy(pSMB->FileName, searchName, name_len); | |
4268 | } | |
4269 | ||
4270 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4271 | pSMB->TotalDataCount = 0; | |
4272 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4273 | /* BB find exact max data count below from sess structure BB */ | |
4274 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4275 | pSMB->MaxSetupCount = 0; | |
4276 | pSMB->Reserved = 0; | |
4277 | pSMB->Flags = 0; | |
4278 | pSMB->Timeout = 0; | |
4279 | pSMB->Reserved2 = 0; | |
4280 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4281 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4282 | pSMB->DataCount = 0; |
4283 | pSMB->DataOffset = 0; | |
4284 | pSMB->SetupCount = 1; | |
4285 | pSMB->Reserved3 = 0; | |
4286 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4287 | byte_count = params + 1 /* pad */ ; | |
4288 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4289 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4290 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4291 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4292 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4293 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4294 | ||
4295 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4296 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4297 | if (rc) { | |
b6b38f70 | 4298 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4299 | } else { |
4300 | /* decode response */ | |
4301 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4302 | /* BB also check enough total bytes returned */ |
820a803f | 4303 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4304 | /* If rc should we check for EOPNOSUPP and |
4305 | disable the srvino flag? or in caller? */ | |
4306 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4307 | else { |
1da177e4 LT |
4308 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4309 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4310 | struct file_internal_info *pfinfo; |
1da177e4 | 4311 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4312 | if (count < 8) { |
b6b38f70 | 4313 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4314 | rc = -EIO; |
4315 | goto GetInodeNumOut; | |
4316 | } | |
4317 | pfinfo = (struct file_internal_info *) | |
4318 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4319 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4320 | } |
4321 | } | |
4322 | GetInodeNumOut: | |
4323 | cifs_buf_release(pSMB); | |
4324 | if (rc == -EAGAIN) | |
4325 | goto GetInodeNumberRetry; | |
4326 | return rc; | |
4327 | } | |
1da177e4 | 4328 | |
fec4585f IM |
4329 | /* parses DFS refferal V3 structure |
4330 | * caller is responsible for freeing target_nodes | |
4331 | * returns: | |
4332 | * on success - 0 | |
4333 | * on failure - errno | |
4334 | */ | |
4335 | static int | |
a1fe78f1 | 4336 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4337 | unsigned int *num_of_nodes, |
4338 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4339 | const struct nls_table *nls_codepage, int remap, |
4340 | const char *searchName) | |
fec4585f IM |
4341 | { |
4342 | int i, rc = 0; | |
4343 | char *data_end; | |
4344 | bool is_unicode; | |
4345 | struct dfs_referral_level_3 *ref; | |
4346 | ||
5ca33c6a HH |
4347 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4348 | is_unicode = true; | |
4349 | else | |
4350 | is_unicode = false; | |
fec4585f IM |
4351 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4352 | ||
4353 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4354 | cERROR(1, "num_referrals: must be at least > 0," |
4355 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4356 | rc = -EINVAL; |
a1fe78f1 | 4357 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4358 | } |
4359 | ||
4360 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4361 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4362 | cERROR(1, "Referrals of V%d version are not supported," |
4363 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4364 | rc = -EINVAL; |
a1fe78f1 | 4365 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4366 | } |
4367 | ||
4368 | /* get the upper boundary of the resp buffer */ | |
4369 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4370 | le16_to_cpu(pSMBr->t2.DataCount); | |
4371 | ||
f19159dc | 4372 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4373 | *num_of_nodes, |
b6b38f70 | 4374 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4375 | |
4376 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4377 | *num_of_nodes, GFP_KERNEL); | |
4378 | if (*target_nodes == NULL) { | |
b6b38f70 | 4379 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4380 | rc = -ENOMEM; |
a1fe78f1 | 4381 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4382 | } |
4383 | ||
3ad2f3fb | 4384 | /* collect necessary data from referrals */ |
fec4585f IM |
4385 | for (i = 0; i < *num_of_nodes; i++) { |
4386 | char *temp; | |
4387 | int max_len; | |
4388 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4389 | ||
0e0d2cf3 | 4390 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4391 | if (is_unicode) { |
331c3135 JL |
4392 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4393 | GFP_KERNEL); | |
2920ee2b SF |
4394 | if (tmp == NULL) { |
4395 | rc = -ENOMEM; | |
4396 | goto parse_DFS_referrals_exit; | |
4397 | } | |
2c55608f IM |
4398 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4399 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4400 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4401 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4402 | nls_codepage); |
4403 | kfree(tmp); | |
4404 | } else | |
4405 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4406 | ||
fec4585f IM |
4407 | node->server_type = le16_to_cpu(ref->ServerType); |
4408 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4409 | ||
4410 | /* copy DfsPath */ | |
4411 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4412 | max_len = data_end - temp; | |
d185cda7 SF |
4413 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4414 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4415 | if (!node->path_name) { |
4416 | rc = -ENOMEM; | |
a1fe78f1 | 4417 | goto parse_DFS_referrals_exit; |
066ce689 | 4418 | } |
fec4585f IM |
4419 | |
4420 | /* copy link target UNC */ | |
4421 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4422 | max_len = data_end - temp; | |
d185cda7 SF |
4423 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4424 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4425 | if (!node->node_name) |
4426 | rc = -ENOMEM; | |
fec4585f IM |
4427 | } |
4428 | ||
a1fe78f1 | 4429 | parse_DFS_referrals_exit: |
fec4585f IM |
4430 | if (rc) { |
4431 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4432 | *target_nodes = NULL; | |
4433 | *num_of_nodes = 0; | |
4434 | } | |
4435 | return rc; | |
4436 | } | |
4437 | ||
1da177e4 | 4438 | int |
96daf2b0 | 4439 | CIFSGetDFSRefer(const int xid, struct cifs_ses *ses, |
1da177e4 | 4440 | const unsigned char *searchName, |
c2cf07d5 SF |
4441 | struct dfs_info3_param **target_nodes, |
4442 | unsigned int *num_of_nodes, | |
737b758c | 4443 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4444 | { |
4445 | /* TRANS2_GET_DFS_REFERRAL */ | |
4446 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4447 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4448 | int rc = 0; |
4449 | int bytes_returned; | |
4450 | int name_len; | |
1da177e4 | 4451 | __u16 params, byte_count; |
c2cf07d5 SF |
4452 | *num_of_nodes = 0; |
4453 | *target_nodes = NULL; | |
1da177e4 | 4454 | |
b6b38f70 | 4455 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4456 | if (ses == NULL) |
4457 | return -ENODEV; | |
4458 | getDFSRetry: | |
4459 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4460 | (void **) &pSMBr); | |
4461 | if (rc) | |
4462 | return rc; | |
50c2f753 SF |
4463 | |
4464 | /* server pointer checked in called function, | |
1982c344 SF |
4465 | but should never be null here anyway */ |
4466 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4467 | pSMB->hdr.Tid = ses->ipc_tid; |
4468 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4469 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4470 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4471 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4472 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4473 | |
4474 | if (ses->capabilities & CAP_UNICODE) { | |
4475 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4476 | name_len = | |
b1a45695 | 4477 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4478 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4479 | name_len++; /* trailing null */ |
4480 | name_len *= 2; | |
50c2f753 | 4481 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4482 | name_len = strnlen(searchName, PATH_MAX); |
4483 | name_len++; /* trailing null */ | |
4484 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4485 | } | |
4486 | ||
790fe579 | 4487 | if (ses->server) { |
96daf2b0 | 4488 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4489 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4490 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4491 | } | |
4492 | ||
50c2f753 | 4493 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4494 | |
1da177e4 LT |
4495 | params = 2 /* level */ + name_len /*includes null */ ; |
4496 | pSMB->TotalDataCount = 0; | |
4497 | pSMB->DataCount = 0; | |
4498 | pSMB->DataOffset = 0; | |
4499 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4500 | /* BB find exact max SMB PDU from sess structure BB */ |
4501 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4502 | pSMB->MaxSetupCount = 0; |
4503 | pSMB->Reserved = 0; | |
4504 | pSMB->Flags = 0; | |
4505 | pSMB->Timeout = 0; | |
4506 | pSMB->Reserved2 = 0; | |
4507 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4508 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4509 | pSMB->SetupCount = 1; |
4510 | pSMB->Reserved3 = 0; | |
4511 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4512 | byte_count = params + 3 /* pad */ ; | |
4513 | pSMB->ParameterCount = cpu_to_le16(params); | |
4514 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4515 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4516 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4517 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4518 | ||
4519 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4520 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4521 | if (rc) { | |
b6b38f70 | 4522 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4523 | goto GetDFSRefExit; |
4524 | } | |
4525 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4526 | |
c2cf07d5 | 4527 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4528 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4529 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4530 | goto GetDFSRefExit; |
4531 | } | |
c2cf07d5 | 4532 | |
b6b38f70 | 4533 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4534 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4535 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4536 | |
fec4585f | 4537 | /* parse returned result into more usable form */ |
a1fe78f1 | 4538 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4539 | target_nodes, nls_codepage, remap, |
4540 | searchName); | |
c2cf07d5 | 4541 | |
1da177e4 | 4542 | GetDFSRefExit: |
0d817bc0 | 4543 | cifs_buf_release(pSMB); |
1da177e4 LT |
4544 | |
4545 | if (rc == -EAGAIN) | |
4546 | goto getDFSRetry; | |
4547 | ||
4548 | return rc; | |
4549 | } | |
4550 | ||
20962438 SF |
4551 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4552 | int | |
96daf2b0 | 4553 | SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
20962438 SF |
4554 | { |
4555 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4556 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4557 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4558 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4559 | int rc = 0; | |
4560 | int bytes_returned = 0; | |
4561 | __u16 params, byte_count; | |
4562 | ||
b6b38f70 | 4563 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4564 | oldQFSInfoRetry: |
4565 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4566 | (void **) &pSMBr); | |
4567 | if (rc) | |
4568 | return rc; | |
20962438 SF |
4569 | |
4570 | params = 2; /* level */ | |
4571 | pSMB->TotalDataCount = 0; | |
4572 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4573 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4574 | pSMB->MaxSetupCount = 0; | |
4575 | pSMB->Reserved = 0; | |
4576 | pSMB->Flags = 0; | |
4577 | pSMB->Timeout = 0; | |
4578 | pSMB->Reserved2 = 0; | |
4579 | byte_count = params + 1 /* pad */ ; | |
4580 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4581 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4582 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4583 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4584 | pSMB->DataCount = 0; | |
4585 | pSMB->DataOffset = 0; | |
4586 | pSMB->SetupCount = 1; | |
4587 | pSMB->Reserved3 = 0; | |
4588 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4589 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4590 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4591 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4592 | ||
4593 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4594 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4595 | if (rc) { | |
b6b38f70 | 4596 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4597 | } else { /* decode response */ |
4598 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4599 | ||
820a803f | 4600 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4601 | rc = -EIO; /* bad smb */ |
4602 | else { | |
4603 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4604 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4605 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4606 | |
50c2f753 | 4607 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4608 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4609 | FSData->f_bsize = | |
4610 | le16_to_cpu(response_data->BytesPerSector) * | |
4611 | le32_to_cpu(response_data-> | |
4612 | SectorsPerAllocationUnit); | |
4613 | FSData->f_blocks = | |
50c2f753 | 4614 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4615 | FSData->f_bfree = FSData->f_bavail = |
4616 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4617 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4618 | (unsigned long long)FSData->f_blocks, | |
4619 | (unsigned long long)FSData->f_bfree, | |
4620 | FSData->f_bsize); | |
20962438 SF |
4621 | } |
4622 | } | |
4623 | cifs_buf_release(pSMB); | |
4624 | ||
4625 | if (rc == -EAGAIN) | |
4626 | goto oldQFSInfoRetry; | |
4627 | ||
4628 | return rc; | |
4629 | } | |
4630 | ||
1da177e4 | 4631 | int |
96daf2b0 | 4632 | CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4633 | { |
4634 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4635 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4636 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4637 | FILE_SYSTEM_INFO *response_data; | |
4638 | int rc = 0; | |
4639 | int bytes_returned = 0; | |
4640 | __u16 params, byte_count; | |
4641 | ||
b6b38f70 | 4642 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4643 | QFSInfoRetry: |
4644 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4645 | (void **) &pSMBr); | |
4646 | if (rc) | |
4647 | return rc; | |
4648 | ||
4649 | params = 2; /* level */ | |
4650 | pSMB->TotalDataCount = 0; | |
4651 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4652 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4653 | pSMB->MaxSetupCount = 0; |
4654 | pSMB->Reserved = 0; | |
4655 | pSMB->Flags = 0; | |
4656 | pSMB->Timeout = 0; | |
4657 | pSMB->Reserved2 = 0; | |
4658 | byte_count = params + 1 /* pad */ ; | |
4659 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4660 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4661 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4662 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4663 | pSMB->DataCount = 0; |
4664 | pSMB->DataOffset = 0; | |
4665 | pSMB->SetupCount = 1; | |
4666 | pSMB->Reserved3 = 0; | |
4667 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4668 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4669 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4670 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4671 | ||
4672 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4673 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4674 | if (rc) { | |
b6b38f70 | 4675 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4676 | } else { /* decode response */ |
50c2f753 | 4677 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4678 | |
820a803f | 4679 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4680 | rc = -EIO; /* bad smb */ |
4681 | else { | |
4682 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4683 | |
4684 | response_data = | |
4685 | (FILE_SYSTEM_INFO | |
4686 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4687 | data_offset); | |
4688 | FSData->f_bsize = | |
4689 | le32_to_cpu(response_data->BytesPerSector) * | |
4690 | le32_to_cpu(response_data-> | |
4691 | SectorsPerAllocationUnit); | |
4692 | FSData->f_blocks = | |
4693 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4694 | FSData->f_bfree = FSData->f_bavail = | |
4695 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4696 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4697 | (unsigned long long)FSData->f_blocks, | |
4698 | (unsigned long long)FSData->f_bfree, | |
4699 | FSData->f_bsize); | |
1da177e4 LT |
4700 | } |
4701 | } | |
4702 | cifs_buf_release(pSMB); | |
4703 | ||
4704 | if (rc == -EAGAIN) | |
4705 | goto QFSInfoRetry; | |
4706 | ||
4707 | return rc; | |
4708 | } | |
4709 | ||
4710 | int | |
96daf2b0 | 4711 | CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4712 | { |
4713 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4714 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4715 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4716 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4717 | int rc = 0; | |
4718 | int bytes_returned = 0; | |
4719 | __u16 params, byte_count; | |
4720 | ||
b6b38f70 | 4721 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4722 | QFSAttributeRetry: |
4723 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4724 | (void **) &pSMBr); | |
4725 | if (rc) | |
4726 | return rc; | |
4727 | ||
4728 | params = 2; /* level */ | |
4729 | pSMB->TotalDataCount = 0; | |
4730 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4731 | /* BB find exact max SMB PDU from sess structure BB */ |
4732 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4733 | pSMB->MaxSetupCount = 0; |
4734 | pSMB->Reserved = 0; | |
4735 | pSMB->Flags = 0; | |
4736 | pSMB->Timeout = 0; | |
4737 | pSMB->Reserved2 = 0; | |
4738 | byte_count = params + 1 /* pad */ ; | |
4739 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4740 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4741 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4742 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4743 | pSMB->DataCount = 0; |
4744 | pSMB->DataOffset = 0; | |
4745 | pSMB->SetupCount = 1; | |
4746 | pSMB->Reserved3 = 0; | |
4747 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4748 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4749 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4750 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4751 | ||
4752 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4753 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4754 | if (rc) { | |
b6b38f70 | 4755 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4756 | } else { /* decode response */ |
4757 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4758 | ||
820a803f | 4759 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4760 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4761 | rc = -EIO; /* bad smb */ |
4762 | } else { | |
4763 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4764 | response_data = | |
4765 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4766 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4767 | data_offset); | |
4768 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4769 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4770 | } |
4771 | } | |
4772 | cifs_buf_release(pSMB); | |
4773 | ||
4774 | if (rc == -EAGAIN) | |
4775 | goto QFSAttributeRetry; | |
4776 | ||
4777 | return rc; | |
4778 | } | |
4779 | ||
4780 | int | |
96daf2b0 | 4781 | CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4782 | { |
4783 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4784 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4785 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4786 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4787 | int rc = 0; | |
4788 | int bytes_returned = 0; | |
4789 | __u16 params, byte_count; | |
4790 | ||
b6b38f70 | 4791 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4792 | QFSDeviceRetry: |
4793 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4794 | (void **) &pSMBr); | |
4795 | if (rc) | |
4796 | return rc; | |
4797 | ||
4798 | params = 2; /* level */ | |
4799 | pSMB->TotalDataCount = 0; | |
4800 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4801 | /* BB find exact max SMB PDU from sess structure BB */ |
4802 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4803 | pSMB->MaxSetupCount = 0; |
4804 | pSMB->Reserved = 0; | |
4805 | pSMB->Flags = 0; | |
4806 | pSMB->Timeout = 0; | |
4807 | pSMB->Reserved2 = 0; | |
4808 | byte_count = params + 1 /* pad */ ; | |
4809 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4810 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4811 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4812 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4813 | |
4814 | pSMB->DataCount = 0; | |
4815 | pSMB->DataOffset = 0; | |
4816 | pSMB->SetupCount = 1; | |
4817 | pSMB->Reserved3 = 0; | |
4818 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4819 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4820 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4821 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4822 | ||
4823 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4824 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4825 | if (rc) { | |
b6b38f70 | 4826 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4827 | } else { /* decode response */ |
4828 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4829 | ||
820a803f JL |
4830 | if (rc || get_bcc(&pSMBr->hdr) < |
4831 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4832 | rc = -EIO; /* bad smb */ |
4833 | else { | |
4834 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4835 | response_data = | |
737b758c SF |
4836 | (FILE_SYSTEM_DEVICE_INFO *) |
4837 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4838 | data_offset); |
4839 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4840 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4841 | } |
4842 | } | |
4843 | cifs_buf_release(pSMB); | |
4844 | ||
4845 | if (rc == -EAGAIN) | |
4846 | goto QFSDeviceRetry; | |
4847 | ||
4848 | return rc; | |
4849 | } | |
4850 | ||
4851 | int | |
96daf2b0 | 4852 | CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4853 | { |
4854 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4855 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4856 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4857 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4858 | int rc = 0; | |
4859 | int bytes_returned = 0; | |
4860 | __u16 params, byte_count; | |
4861 | ||
b6b38f70 | 4862 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 4863 | QFSUnixRetry: |
f569599a JL |
4864 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4865 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4866 | if (rc) |
4867 | return rc; | |
4868 | ||
4869 | params = 2; /* level */ | |
4870 | pSMB->TotalDataCount = 0; | |
4871 | pSMB->DataCount = 0; | |
4872 | pSMB->DataOffset = 0; | |
4873 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4874 | /* BB find exact max SMB PDU from sess structure BB */ |
4875 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4876 | pSMB->MaxSetupCount = 0; |
4877 | pSMB->Reserved = 0; | |
4878 | pSMB->Flags = 0; | |
4879 | pSMB->Timeout = 0; | |
4880 | pSMB->Reserved2 = 0; | |
4881 | byte_count = params + 1 /* pad */ ; | |
4882 | pSMB->ParameterCount = cpu_to_le16(params); | |
4883 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4884 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4885 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4886 | pSMB->SetupCount = 1; |
4887 | pSMB->Reserved3 = 0; | |
4888 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4889 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4890 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4891 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4892 | ||
4893 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4894 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4895 | if (rc) { | |
b6b38f70 | 4896 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4897 | } else { /* decode response */ |
4898 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4899 | ||
820a803f | 4900 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4901 | rc = -EIO; /* bad smb */ |
4902 | } else { | |
4903 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4904 | response_data = | |
4905 | (FILE_SYSTEM_UNIX_INFO | |
4906 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4907 | data_offset); | |
4908 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4909 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4910 | } |
4911 | } | |
4912 | cifs_buf_release(pSMB); | |
4913 | ||
4914 | if (rc == -EAGAIN) | |
4915 | goto QFSUnixRetry; | |
4916 | ||
4917 | ||
4918 | return rc; | |
4919 | } | |
4920 | ||
ac67055e | 4921 | int |
96daf2b0 | 4922 | CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
4923 | { |
4924 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4925 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4926 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4927 | int rc = 0; | |
4928 | int bytes_returned = 0; | |
4929 | __u16 params, param_offset, offset, byte_count; | |
4930 | ||
b6b38f70 | 4931 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4932 | SETFSUnixRetry: |
f26282c9 | 4933 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4934 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4935 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4936 | if (rc) |
4937 | return rc; | |
4938 | ||
4939 | params = 4; /* 2 bytes zero followed by info level. */ | |
4940 | pSMB->MaxSetupCount = 0; | |
4941 | pSMB->Reserved = 0; | |
4942 | pSMB->Flags = 0; | |
4943 | pSMB->Timeout = 0; | |
4944 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4945 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4946 | - 4; | |
ac67055e JA |
4947 | offset = param_offset + params; |
4948 | ||
4949 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4950 | /* BB find exact max SMB PDU from sess structure BB */ |
4951 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4952 | pSMB->SetupCount = 1; |
4953 | pSMB->Reserved3 = 0; | |
4954 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4955 | byte_count = 1 /* pad */ + params + 12; | |
4956 | ||
4957 | pSMB->DataCount = cpu_to_le16(12); | |
4958 | pSMB->ParameterCount = cpu_to_le16(params); | |
4959 | pSMB->TotalDataCount = pSMB->DataCount; | |
4960 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4961 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4962 | pSMB->DataOffset = cpu_to_le16(offset); | |
4963 | ||
4964 | /* Params. */ | |
4965 | pSMB->FileNum = 0; | |
4966 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4967 | ||
4968 | /* Data. */ | |
4969 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4970 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4971 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4972 | ||
be8e3b00 | 4973 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4974 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4975 | ||
4976 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4977 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4978 | if (rc) { | |
b6b38f70 | 4979 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4980 | } else { /* decode response */ |
4981 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4982 | if (rc) |
ac67055e | 4983 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4984 | } |
4985 | cifs_buf_release(pSMB); | |
4986 | ||
4987 | if (rc == -EAGAIN) | |
4988 | goto SETFSUnixRetry; | |
4989 | ||
4990 | return rc; | |
4991 | } | |
4992 | ||
4993 | ||
1da177e4 LT |
4994 | |
4995 | int | |
96daf2b0 | 4996 | CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon, |
737b758c | 4997 | struct kstatfs *FSData) |
1da177e4 LT |
4998 | { |
4999 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5000 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5001 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5002 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5003 | int rc = 0; | |
5004 | int bytes_returned = 0; | |
5005 | __u16 params, byte_count; | |
5006 | ||
b6b38f70 | 5007 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5008 | QFSPosixRetry: |
5009 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5010 | (void **) &pSMBr); | |
5011 | if (rc) | |
5012 | return rc; | |
5013 | ||
5014 | params = 2; /* level */ | |
5015 | pSMB->TotalDataCount = 0; | |
5016 | pSMB->DataCount = 0; | |
5017 | pSMB->DataOffset = 0; | |
5018 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5019 | /* BB find exact max SMB PDU from sess structure BB */ |
5020 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5021 | pSMB->MaxSetupCount = 0; |
5022 | pSMB->Reserved = 0; | |
5023 | pSMB->Flags = 0; | |
5024 | pSMB->Timeout = 0; | |
5025 | pSMB->Reserved2 = 0; | |
5026 | byte_count = params + 1 /* pad */ ; | |
5027 | pSMB->ParameterCount = cpu_to_le16(params); | |
5028 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5029 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5030 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5031 | pSMB->SetupCount = 1; |
5032 | pSMB->Reserved3 = 0; | |
5033 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5034 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5035 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5036 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5037 | ||
5038 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5039 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5040 | if (rc) { | |
b6b38f70 | 5041 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5042 | } else { /* decode response */ |
5043 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5044 | ||
820a803f | 5045 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5046 | rc = -EIO; /* bad smb */ |
5047 | } else { | |
5048 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5049 | response_data = | |
5050 | (FILE_SYSTEM_POSIX_INFO | |
5051 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5052 | data_offset); | |
5053 | FSData->f_bsize = | |
5054 | le32_to_cpu(response_data->BlockSize); | |
5055 | FSData->f_blocks = | |
5056 | le64_to_cpu(response_data->TotalBlocks); | |
5057 | FSData->f_bfree = | |
5058 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5059 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5060 | FSData->f_bavail = FSData->f_bfree; |
5061 | } else { | |
5062 | FSData->f_bavail = | |
50c2f753 | 5063 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5064 | } |
790fe579 | 5065 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5066 | FSData->f_files = |
50c2f753 | 5067 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5068 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5069 | FSData->f_ffree = |
50c2f753 | 5070 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5071 | } |
5072 | } | |
5073 | cifs_buf_release(pSMB); | |
5074 | ||
5075 | if (rc == -EAGAIN) | |
5076 | goto QFSPosixRetry; | |
5077 | ||
5078 | return rc; | |
5079 | } | |
5080 | ||
5081 | ||
50c2f753 SF |
5082 | /* We can not use write of zero bytes trick to |
5083 | set file size due to need for large file support. Also note that | |
5084 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5085 | routine which is only needed to work around a sharing violation bug |
5086 | in Samba which this routine can run into */ | |
5087 | ||
5088 | int | |
96daf2b0 | 5089 | CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName, |
4b18f2a9 | 5090 | __u64 size, bool SetAllocation, |
737b758c | 5091 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5092 | { |
5093 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5094 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5095 | struct file_end_of_file_info *parm_data; | |
5096 | int name_len; | |
5097 | int rc = 0; | |
5098 | int bytes_returned = 0; | |
5099 | __u16 params, byte_count, data_count, param_offset, offset; | |
5100 | ||
b6b38f70 | 5101 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5102 | SetEOFRetry: |
5103 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5104 | (void **) &pSMBr); | |
5105 | if (rc) | |
5106 | return rc; | |
5107 | ||
5108 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5109 | name_len = | |
b1a45695 | 5110 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5111 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5112 | name_len++; /* trailing null */ |
5113 | name_len *= 2; | |
3e87d803 | 5114 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5115 | name_len = strnlen(fileName, PATH_MAX); |
5116 | name_len++; /* trailing null */ | |
5117 | strncpy(pSMB->FileName, fileName, name_len); | |
5118 | } | |
5119 | params = 6 + name_len; | |
26f57364 | 5120 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5121 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5122 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5123 | pSMB->MaxSetupCount = 0; |
5124 | pSMB->Reserved = 0; | |
5125 | pSMB->Flags = 0; | |
5126 | pSMB->Timeout = 0; | |
5127 | pSMB->Reserved2 = 0; | |
5128 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5129 | InformationLevel) - 4; |
1da177e4 | 5130 | offset = param_offset + params; |
790fe579 | 5131 | if (SetAllocation) { |
50c2f753 SF |
5132 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5133 | pSMB->InformationLevel = | |
5134 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5135 | else | |
5136 | pSMB->InformationLevel = | |
5137 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5138 | } else /* Set File Size */ { | |
1da177e4 LT |
5139 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5140 | pSMB->InformationLevel = | |
50c2f753 | 5141 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5142 | else |
5143 | pSMB->InformationLevel = | |
50c2f753 | 5144 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5145 | } |
5146 | ||
5147 | parm_data = | |
5148 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5149 | offset); | |
5150 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5151 | pSMB->DataOffset = cpu_to_le16(offset); | |
5152 | pSMB->SetupCount = 1; | |
5153 | pSMB->Reserved3 = 0; | |
5154 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5155 | byte_count = 3 /* pad */ + params + data_count; | |
5156 | pSMB->DataCount = cpu_to_le16(data_count); | |
5157 | pSMB->TotalDataCount = pSMB->DataCount; | |
5158 | pSMB->ParameterCount = cpu_to_le16(params); | |
5159 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5160 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5161 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5162 | parm_data->FileSize = cpu_to_le64(size); |
5163 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5164 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5165 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5166 | if (rc) |
b6b38f70 | 5167 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5168 | |
5169 | cifs_buf_release(pSMB); | |
5170 | ||
5171 | if (rc == -EAGAIN) | |
5172 | goto SetEOFRetry; | |
5173 | ||
5174 | return rc; | |
5175 | } | |
5176 | ||
5177 | int | |
96daf2b0 | 5178 | CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size, |
4b18f2a9 | 5179 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5180 | { |
5181 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5182 | struct file_end_of_file_info *parm_data; |
5183 | int rc = 0; | |
1da177e4 LT |
5184 | __u16 params, param_offset, offset, byte_count, count; |
5185 | ||
b6b38f70 JP |
5186 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5187 | (long long)size); | |
cd63499c SF |
5188 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5189 | ||
1da177e4 LT |
5190 | if (rc) |
5191 | return rc; | |
5192 | ||
5193 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5194 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5195 | |
1da177e4 LT |
5196 | params = 6; |
5197 | pSMB->MaxSetupCount = 0; | |
5198 | pSMB->Reserved = 0; | |
5199 | pSMB->Flags = 0; | |
5200 | pSMB->Timeout = 0; | |
5201 | pSMB->Reserved2 = 0; | |
5202 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5203 | offset = param_offset + params; | |
5204 | ||
1da177e4 LT |
5205 | count = sizeof(struct file_end_of_file_info); |
5206 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5207 | /* BB find exact max SMB PDU from sess structure BB */ |
5208 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5209 | pSMB->SetupCount = 1; |
5210 | pSMB->Reserved3 = 0; | |
5211 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5212 | byte_count = 3 /* pad */ + params + count; | |
5213 | pSMB->DataCount = cpu_to_le16(count); | |
5214 | pSMB->ParameterCount = cpu_to_le16(params); | |
5215 | pSMB->TotalDataCount = pSMB->DataCount; | |
5216 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5217 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5218 | parm_data = | |
50c2f753 SF |
5219 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5220 | + offset); | |
1da177e4 LT |
5221 | pSMB->DataOffset = cpu_to_le16(offset); |
5222 | parm_data->FileSize = cpu_to_le64(size); | |
5223 | pSMB->Fid = fid; | |
790fe579 | 5224 | if (SetAllocation) { |
1da177e4 LT |
5225 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5226 | pSMB->InformationLevel = | |
5227 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5228 | else | |
5229 | pSMB->InformationLevel = | |
5230 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5231 | } else /* Set File Size */ { |
1da177e4 LT |
5232 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5233 | pSMB->InformationLevel = | |
50c2f753 | 5234 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5235 | else |
5236 | pSMB->InformationLevel = | |
50c2f753 | 5237 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5238 | } |
5239 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5240 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5241 | pSMB->ByteCount = cpu_to_le16(byte_count); |
133672ef | 5242 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 5243 | if (rc) { |
b6b38f70 | 5244 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5245 | } |
5246 | ||
50c2f753 | 5247 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5248 | since file handle passed in no longer valid */ |
5249 | ||
5250 | return rc; | |
5251 | } | |
5252 | ||
50c2f753 | 5253 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5254 | an open handle, rather than by pathname - this is awkward due to |
5255 | potential access conflicts on the open, but it is unavoidable for these | |
5256 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5257 | time and resort to the original setpathinfo level which takes the ancient | |
5258 | DOS time format with 2 second granularity */ | |
5259 | int | |
96daf2b0 | 5260 | CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5261 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5262 | { |
5263 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5264 | char *data_offset; |
5265 | int rc = 0; | |
1da177e4 LT |
5266 | __u16 params, param_offset, offset, byte_count, count; |
5267 | ||
b6b38f70 | 5268 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5269 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5270 | ||
1da177e4 LT |
5271 | if (rc) |
5272 | return rc; | |
5273 | ||
2dd2dfa0 JL |
5274 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5275 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5276 | |
1da177e4 LT |
5277 | params = 6; |
5278 | pSMB->MaxSetupCount = 0; | |
5279 | pSMB->Reserved = 0; | |
5280 | pSMB->Flags = 0; | |
5281 | pSMB->Timeout = 0; | |
5282 | pSMB->Reserved2 = 0; | |
5283 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5284 | offset = param_offset + params; | |
5285 | ||
50c2f753 | 5286 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 5287 | |
26f57364 | 5288 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5289 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5290 | /* BB find max SMB PDU from sess */ |
5291 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5292 | pSMB->SetupCount = 1; |
5293 | pSMB->Reserved3 = 0; | |
5294 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5295 | byte_count = 3 /* pad */ + params + count; | |
5296 | pSMB->DataCount = cpu_to_le16(count); | |
5297 | pSMB->ParameterCount = cpu_to_le16(params); | |
5298 | pSMB->TotalDataCount = pSMB->DataCount; | |
5299 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5300 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5301 | pSMB->DataOffset = cpu_to_le16(offset); | |
5302 | pSMB->Fid = fid; | |
5303 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5304 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5305 | else | |
5306 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5307 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5308 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5309 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5310 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 5311 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 5312 | if (rc) |
b6b38f70 | 5313 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5314 | |
50c2f753 | 5315 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5316 | since file handle passed in no longer valid */ |
5317 | ||
5318 | return rc; | |
5319 | } | |
5320 | ||
6d22f098 | 5321 | int |
96daf2b0 | 5322 | CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5323 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5324 | { | |
5325 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5326 | char *data_offset; | |
5327 | int rc = 0; | |
5328 | __u16 params, param_offset, offset, byte_count, count; | |
5329 | ||
b6b38f70 | 5330 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5331 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5332 | ||
5333 | if (rc) | |
5334 | return rc; | |
5335 | ||
5336 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5337 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5338 | ||
5339 | params = 6; | |
5340 | pSMB->MaxSetupCount = 0; | |
5341 | pSMB->Reserved = 0; | |
5342 | pSMB->Flags = 0; | |
5343 | pSMB->Timeout = 0; | |
5344 | pSMB->Reserved2 = 0; | |
5345 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5346 | offset = param_offset + params; | |
5347 | ||
5348 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5349 | ||
5350 | count = 1; | |
5351 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5352 | /* BB find max SMB PDU from sess */ | |
5353 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5354 | pSMB->SetupCount = 1; | |
5355 | pSMB->Reserved3 = 0; | |
5356 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5357 | byte_count = 3 /* pad */ + params + count; | |
5358 | pSMB->DataCount = cpu_to_le16(count); | |
5359 | pSMB->ParameterCount = cpu_to_le16(params); | |
5360 | pSMB->TotalDataCount = pSMB->DataCount; | |
5361 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5362 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5363 | pSMB->DataOffset = cpu_to_le16(offset); | |
5364 | pSMB->Fid = fid; | |
5365 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5366 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5367 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5368 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5369 | *data_offset = delete_file ? 1 : 0; | |
5370 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5371 | if (rc) | |
b6b38f70 | 5372 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5373 | |
5374 | return rc; | |
5375 | } | |
1da177e4 LT |
5376 | |
5377 | int | |
96daf2b0 | 5378 | CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5379 | const char *fileName, const FILE_BASIC_INFO *data, |
5380 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5381 | { |
5382 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5383 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5384 | int name_len; | |
5385 | int rc = 0; | |
5386 | int bytes_returned = 0; | |
5387 | char *data_offset; | |
5388 | __u16 params, param_offset, offset, byte_count, count; | |
5389 | ||
b6b38f70 | 5390 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5391 | |
5392 | SetTimesRetry: | |
5393 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5394 | (void **) &pSMBr); | |
5395 | if (rc) | |
5396 | return rc; | |
5397 | ||
5398 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5399 | name_len = | |
b1a45695 | 5400 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5401 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5402 | name_len++; /* trailing null */ |
5403 | name_len *= 2; | |
50c2f753 | 5404 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5405 | name_len = strnlen(fileName, PATH_MAX); |
5406 | name_len++; /* trailing null */ | |
5407 | strncpy(pSMB->FileName, fileName, name_len); | |
5408 | } | |
5409 | ||
5410 | params = 6 + name_len; | |
26f57364 | 5411 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5412 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5413 | /* BB find max SMB PDU from sess structure BB */ |
5414 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5415 | pSMB->MaxSetupCount = 0; |
5416 | pSMB->Reserved = 0; | |
5417 | pSMB->Flags = 0; | |
5418 | pSMB->Timeout = 0; | |
5419 | pSMB->Reserved2 = 0; | |
5420 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5421 | InformationLevel) - 4; |
1da177e4 LT |
5422 | offset = param_offset + params; |
5423 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5424 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5425 | pSMB->DataOffset = cpu_to_le16(offset); | |
5426 | pSMB->SetupCount = 1; | |
5427 | pSMB->Reserved3 = 0; | |
5428 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5429 | byte_count = 3 /* pad */ + params + count; | |
5430 | ||
5431 | pSMB->DataCount = cpu_to_le16(count); | |
5432 | pSMB->ParameterCount = cpu_to_le16(params); | |
5433 | pSMB->TotalDataCount = pSMB->DataCount; | |
5434 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5435 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5436 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5437 | else | |
5438 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5439 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5440 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5441 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5442 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5443 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5444 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5445 | if (rc) |
b6b38f70 | 5446 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5447 | |
5448 | cifs_buf_release(pSMB); | |
5449 | ||
5450 | if (rc == -EAGAIN) | |
5451 | goto SetTimesRetry; | |
5452 | ||
5453 | return rc; | |
5454 | } | |
5455 | ||
5456 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5457 | /* Can be used to set attributes */ | |
5458 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5459 | handling it anyway and NT4 was what we thought it would be needed for | |
5460 | Do not delete it until we prove whether needed for Win9x though */ | |
5461 | int | |
96daf2b0 | 5462 | CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5463 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5464 | { | |
5465 | SETATTR_REQ *pSMB = NULL; | |
5466 | SETATTR_RSP *pSMBr = NULL; | |
5467 | int rc = 0; | |
5468 | int bytes_returned; | |
5469 | int name_len; | |
5470 | ||
b6b38f70 | 5471 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5472 | |
5473 | SetAttrLgcyRetry: | |
5474 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5475 | (void **) &pSMBr); | |
5476 | if (rc) | |
5477 | return rc; | |
5478 | ||
5479 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5480 | name_len = | |
50c2f753 | 5481 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5482 | PATH_MAX, nls_codepage); |
5483 | name_len++; /* trailing null */ | |
5484 | name_len *= 2; | |
50c2f753 | 5485 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5486 | name_len = strnlen(fileName, PATH_MAX); |
5487 | name_len++; /* trailing null */ | |
5488 | strncpy(pSMB->fileName, fileName, name_len); | |
5489 | } | |
5490 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5491 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5492 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5493 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5494 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5495 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5496 | if (rc) |
b6b38f70 | 5497 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5498 | |
5499 | cifs_buf_release(pSMB); | |
5500 | ||
5501 | if (rc == -EAGAIN) | |
5502 | goto SetAttrLgcyRetry; | |
5503 | ||
5504 | return rc; | |
5505 | } | |
5506 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5507 | ||
654cf14a JL |
5508 | static void |
5509 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5510 | const struct cifs_unix_set_info_args *args) | |
5511 | { | |
5512 | u64 mode = args->mode; | |
5513 | ||
5514 | /* | |
5515 | * Samba server ignores set of file size to zero due to bugs in some | |
5516 | * older clients, but we should be precise - we use SetFileSize to | |
5517 | * set file size and do not want to truncate file size to zero | |
25985edc | 5518 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5519 | * zero instead of -1 here |
5520 | */ | |
5521 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5522 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5523 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5524 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5525 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5526 | data_offset->Uid = cpu_to_le64(args->uid); | |
5527 | data_offset->Gid = cpu_to_le64(args->gid); | |
5528 | /* better to leave device as zero when it is */ | |
5529 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5530 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5531 | data_offset->Permissions = cpu_to_le64(mode); | |
5532 | ||
5533 | if (S_ISREG(mode)) | |
5534 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5535 | else if (S_ISDIR(mode)) | |
5536 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5537 | else if (S_ISLNK(mode)) | |
5538 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5539 | else if (S_ISCHR(mode)) | |
5540 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5541 | else if (S_ISBLK(mode)) | |
5542 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5543 | else if (S_ISFIFO(mode)) | |
5544 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5545 | else if (S_ISSOCK(mode)) | |
5546 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5547 | } | |
5548 | ||
3bbeeb3c | 5549 | int |
96daf2b0 | 5550 | CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5551 | const struct cifs_unix_set_info_args *args, |
5552 | u16 fid, u32 pid_of_opener) | |
5553 | { | |
5554 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5555 | FILE_UNIX_BASIC_INFO *data_offset; | |
5556 | int rc = 0; | |
5557 | u16 params, param_offset, offset, byte_count, count; | |
5558 | ||
b6b38f70 | 5559 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5560 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5561 | ||
5562 | if (rc) | |
5563 | return rc; | |
5564 | ||
5565 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5566 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5567 | ||
5568 | params = 6; | |
5569 | pSMB->MaxSetupCount = 0; | |
5570 | pSMB->Reserved = 0; | |
5571 | pSMB->Flags = 0; | |
5572 | pSMB->Timeout = 0; | |
5573 | pSMB->Reserved2 = 0; | |
5574 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5575 | offset = param_offset + params; | |
5576 | ||
5577 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5578 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5579 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5580 | ||
5581 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5582 | /* BB find max SMB PDU from sess */ | |
5583 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5584 | pSMB->SetupCount = 1; | |
5585 | pSMB->Reserved3 = 0; | |
5586 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5587 | byte_count = 3 /* pad */ + params + count; | |
5588 | pSMB->DataCount = cpu_to_le16(count); | |
5589 | pSMB->ParameterCount = cpu_to_le16(params); | |
5590 | pSMB->TotalDataCount = pSMB->DataCount; | |
5591 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5592 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5593 | pSMB->DataOffset = cpu_to_le16(offset); | |
5594 | pSMB->Fid = fid; | |
5595 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5596 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5597 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5598 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5599 | ||
5600 | cifs_fill_unix_set_info(data_offset, args); | |
5601 | ||
5602 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5603 | if (rc) | |
b6b38f70 | 5604 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5605 | |
5606 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5607 | since file handle passed in no longer valid */ | |
5608 | ||
5609 | return rc; | |
5610 | } | |
5611 | ||
1da177e4 | 5612 | int |
96daf2b0 | 5613 | CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName, |
01ea95e3 JL |
5614 | const struct cifs_unix_set_info_args *args, |
5615 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5616 | { |
5617 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5618 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5619 | int name_len; | |
5620 | int rc = 0; | |
5621 | int bytes_returned = 0; | |
5622 | FILE_UNIX_BASIC_INFO *data_offset; | |
5623 | __u16 params, param_offset, offset, count, byte_count; | |
5624 | ||
b6b38f70 | 5625 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5626 | setPermsRetry: |
5627 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5628 | (void **) &pSMBr); | |
5629 | if (rc) | |
5630 | return rc; | |
5631 | ||
5632 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5633 | name_len = | |
50c2f753 | 5634 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5635 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5636 | name_len++; /* trailing null */ |
5637 | name_len *= 2; | |
3e87d803 | 5638 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5639 | name_len = strnlen(fileName, PATH_MAX); |
5640 | name_len++; /* trailing null */ | |
5641 | strncpy(pSMB->FileName, fileName, name_len); | |
5642 | } | |
5643 | ||
5644 | params = 6 + name_len; | |
26f57364 | 5645 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5646 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5647 | /* BB find max SMB PDU from sess structure BB */ |
5648 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5649 | pSMB->MaxSetupCount = 0; |
5650 | pSMB->Reserved = 0; | |
5651 | pSMB->Flags = 0; | |
5652 | pSMB->Timeout = 0; | |
5653 | pSMB->Reserved2 = 0; | |
5654 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5655 | InformationLevel) - 4; |
1da177e4 LT |
5656 | offset = param_offset + params; |
5657 | data_offset = | |
5658 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5659 | offset); | |
5660 | memset(data_offset, 0, count); | |
5661 | pSMB->DataOffset = cpu_to_le16(offset); | |
5662 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5663 | pSMB->SetupCount = 1; | |
5664 | pSMB->Reserved3 = 0; | |
5665 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5666 | byte_count = 3 /* pad */ + params + count; | |
5667 | pSMB->ParameterCount = cpu_to_le16(params); | |
5668 | pSMB->DataCount = cpu_to_le16(count); | |
5669 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5670 | pSMB->TotalDataCount = pSMB->DataCount; | |
5671 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5672 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5673 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5674 | |
654cf14a | 5675 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5676 | |
5677 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5678 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5679 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5680 | if (rc) |
b6b38f70 | 5681 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5682 | |
0d817bc0 | 5683 | cifs_buf_release(pSMB); |
1da177e4 LT |
5684 | if (rc == -EAGAIN) |
5685 | goto setPermsRetry; | |
5686 | return rc; | |
5687 | } | |
5688 | ||
1da177e4 | 5689 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5690 | /* |
5691 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5692 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5693 | * it looks for that attribute name and stuffs that value into the EAData | |
5694 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5695 | * buffer. In both cases, the return value is either the length of the | |
5696 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5697 | * the data isn't copied to it, but the length is returned. | |
5698 | */ | |
1da177e4 | 5699 | ssize_t |
96daf2b0 | 5700 | CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon, |
31c0519f JL |
5701 | const unsigned char *searchName, const unsigned char *ea_name, |
5702 | char *EAData, size_t buf_size, | |
5703 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5704 | { |
5705 | /* BB assumes one setup word */ | |
5706 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5707 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5708 | int rc = 0; | |
5709 | int bytes_returned; | |
6e462b9f | 5710 | int list_len; |
f0d3868b | 5711 | struct fealist *ea_response_data; |
50c2f753 SF |
5712 | struct fea *temp_fea; |
5713 | char *temp_ptr; | |
0cd126b5 | 5714 | char *end_of_smb; |
f0d3868b | 5715 | __u16 params, byte_count, data_offset; |
5980fc96 | 5716 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 5717 | |
b6b38f70 | 5718 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5719 | QAllEAsRetry: |
5720 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5721 | (void **) &pSMBr); | |
5722 | if (rc) | |
5723 | return rc; | |
5724 | ||
5725 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5726 | list_len = |
50c2f753 | 5727 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5728 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5729 | list_len++; /* trailing null */ |
5730 | list_len *= 2; | |
1da177e4 | 5731 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5732 | list_len = strnlen(searchName, PATH_MAX); |
5733 | list_len++; /* trailing null */ | |
5734 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5735 | } |
5736 | ||
6e462b9f | 5737 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5738 | pSMB->TotalDataCount = 0; |
5739 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5740 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5741 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5742 | pSMB->MaxSetupCount = 0; |
5743 | pSMB->Reserved = 0; | |
5744 | pSMB->Flags = 0; | |
5745 | pSMB->Timeout = 0; | |
5746 | pSMB->Reserved2 = 0; | |
5747 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5748 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5749 | pSMB->DataCount = 0; |
5750 | pSMB->DataOffset = 0; | |
5751 | pSMB->SetupCount = 1; | |
5752 | pSMB->Reserved3 = 0; | |
5753 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5754 | byte_count = params + 1 /* pad */ ; | |
5755 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5756 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5757 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5758 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5759 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5760 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5761 | ||
5762 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5763 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5764 | if (rc) { | |
b6b38f70 | 5765 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5766 | goto QAllEAsOut; |
5767 | } | |
1da177e4 | 5768 | |
f0d3868b JL |
5769 | |
5770 | /* BB also check enough total bytes returned */ | |
5771 | /* BB we need to improve the validity checking | |
5772 | of these trans2 responses */ | |
5773 | ||
5774 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5775 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5776 | rc = -EIO; /* bad smb */ |
5777 | goto QAllEAsOut; | |
5778 | } | |
5779 | ||
5780 | /* check that length of list is not more than bcc */ | |
5781 | /* check that each entry does not go beyond length | |
5782 | of list */ | |
5783 | /* check that each element of each entry does not | |
5784 | go beyond end of list */ | |
5785 | /* validate_trans2_offsets() */ | |
5786 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5787 | ||
5788 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5789 | ea_response_data = (struct fealist *) | |
5790 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5791 | ||
6e462b9f | 5792 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5793 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5794 | if (list_len <= 8) { |
b6b38f70 | 5795 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5796 | goto QAllEAsOut; |
5797 | } | |
5798 | ||
0cd126b5 | 5799 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5800 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5801 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 5802 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5803 | rc = -EIO; |
5804 | goto QAllEAsOut; | |
5805 | } | |
5806 | ||
f0d3868b | 5807 | /* account for ea list len */ |
6e462b9f | 5808 | list_len -= 4; |
f0d3868b JL |
5809 | temp_fea = ea_response_data->list; |
5810 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5811 | while (list_len > 0) { |
122ca007 | 5812 | unsigned int name_len; |
f0d3868b | 5813 | __u16 value_len; |
0cd126b5 | 5814 | |
6e462b9f | 5815 | list_len -= 4; |
f0d3868b | 5816 | temp_ptr += 4; |
0cd126b5 JL |
5817 | /* make sure we can read name_len and value_len */ |
5818 | if (list_len < 0) { | |
b6b38f70 | 5819 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5820 | rc = -EIO; |
5821 | goto QAllEAsOut; | |
5822 | } | |
5823 | ||
5824 | name_len = temp_fea->name_len; | |
5825 | value_len = le16_to_cpu(temp_fea->value_len); | |
5826 | list_len -= name_len + 1 + value_len; | |
5827 | if (list_len < 0) { | |
b6b38f70 | 5828 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5829 | rc = -EIO; |
5830 | goto QAllEAsOut; | |
5831 | } | |
5832 | ||
31c0519f | 5833 | if (ea_name) { |
91d065c4 | 5834 | if (ea_name_len == name_len && |
ac423446 | 5835 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
5836 | temp_ptr += name_len + 1; |
5837 | rc = value_len; | |
5838 | if (buf_size == 0) | |
5839 | goto QAllEAsOut; | |
5840 | if ((size_t)value_len > buf_size) { | |
5841 | rc = -ERANGE; | |
5842 | goto QAllEAsOut; | |
5843 | } | |
5844 | memcpy(EAData, temp_ptr, value_len); | |
5845 | goto QAllEAsOut; | |
5846 | } | |
f0d3868b | 5847 | } else { |
31c0519f JL |
5848 | /* account for prefix user. and trailing null */ |
5849 | rc += (5 + 1 + name_len); | |
5850 | if (rc < (int) buf_size) { | |
5851 | memcpy(EAData, "user.", 5); | |
5852 | EAData += 5; | |
5853 | memcpy(EAData, temp_ptr, name_len); | |
5854 | EAData += name_len; | |
5855 | /* null terminate name */ | |
5856 | *EAData = 0; | |
5857 | ++EAData; | |
5858 | } else if (buf_size == 0) { | |
5859 | /* skip copy - calc size only */ | |
5860 | } else { | |
5861 | /* stop before overrun buffer */ | |
5862 | rc = -ERANGE; | |
5863 | break; | |
5864 | } | |
1da177e4 | 5865 | } |
0cd126b5 | 5866 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5867 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5868 | } |
f0d3868b | 5869 | |
31c0519f JL |
5870 | /* didn't find the named attribute */ |
5871 | if (ea_name) | |
5872 | rc = -ENODATA; | |
5873 | ||
f0d3868b | 5874 | QAllEAsOut: |
0d817bc0 | 5875 | cifs_buf_release(pSMB); |
1da177e4 LT |
5876 | if (rc == -EAGAIN) |
5877 | goto QAllEAsRetry; | |
5878 | ||
5879 | return (ssize_t)rc; | |
5880 | } | |
5881 | ||
1da177e4 | 5882 | int |
96daf2b0 | 5883 | CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName, |
50c2f753 SF |
5884 | const char *ea_name, const void *ea_value, |
5885 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5886 | int remap) | |
1da177e4 LT |
5887 | { |
5888 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5889 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5890 | struct fealist *parm_data; | |
5891 | int name_len; | |
5892 | int rc = 0; | |
5893 | int bytes_returned = 0; | |
5894 | __u16 params, param_offset, byte_count, offset, count; | |
5895 | ||
b6b38f70 | 5896 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5897 | SetEARetry: |
5898 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5899 | (void **) &pSMBr); | |
5900 | if (rc) | |
5901 | return rc; | |
5902 | ||
5903 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5904 | name_len = | |
50c2f753 | 5905 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5906 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5907 | name_len++; /* trailing null */ |
5908 | name_len *= 2; | |
50c2f753 | 5909 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5910 | name_len = strnlen(fileName, PATH_MAX); |
5911 | name_len++; /* trailing null */ | |
5912 | strncpy(pSMB->FileName, fileName, name_len); | |
5913 | } | |
5914 | ||
5915 | params = 6 + name_len; | |
5916 | ||
5917 | /* done calculating parms using name_len of file name, | |
5918 | now use name_len to calculate length of ea name | |
5919 | we are going to create in the inode xattrs */ | |
790fe579 | 5920 | if (ea_name == NULL) |
1da177e4 LT |
5921 | name_len = 0; |
5922 | else | |
50c2f753 | 5923 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5924 | |
dae5dbdb | 5925 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5926 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5927 | /* BB find max SMB PDU from sess */ |
5928 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5929 | pSMB->MaxSetupCount = 0; |
5930 | pSMB->Reserved = 0; | |
5931 | pSMB->Flags = 0; | |
5932 | pSMB->Timeout = 0; | |
5933 | pSMB->Reserved2 = 0; | |
5934 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5935 | InformationLevel) - 4; |
1da177e4 LT |
5936 | offset = param_offset + params; |
5937 | pSMB->InformationLevel = | |
5938 | cpu_to_le16(SMB_SET_FILE_EA); | |
5939 | ||
5940 | parm_data = | |
5941 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5942 | offset); | |
5943 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5944 | pSMB->DataOffset = cpu_to_le16(offset); | |
5945 | pSMB->SetupCount = 1; | |
5946 | pSMB->Reserved3 = 0; | |
5947 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5948 | byte_count = 3 /* pad */ + params + count; | |
5949 | pSMB->DataCount = cpu_to_le16(count); | |
5950 | parm_data->list_len = cpu_to_le32(count); | |
5951 | parm_data->list[0].EA_flags = 0; | |
5952 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5953 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5954 | /* EA names are always ASCII */ |
790fe579 | 5955 | if (ea_name) |
50c2f753 | 5956 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5957 | parm_data->list[0].name[name_len] = 0; |
5958 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5959 | /* caller ensures that ea_value_len is less than 64K but | |
5960 | we need to ensure that it fits within the smb */ | |
5961 | ||
50c2f753 SF |
5962 | /*BB add length check to see if it would fit in |
5963 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5964 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5965 | if (ea_value_len) | |
50c2f753 SF |
5966 | memcpy(parm_data->list[0].name+name_len+1, |
5967 | ea_value, ea_value_len); | |
1da177e4 LT |
5968 | |
5969 | pSMB->TotalDataCount = pSMB->DataCount; | |
5970 | pSMB->ParameterCount = cpu_to_le16(params); | |
5971 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5972 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5973 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5974 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5975 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5976 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5977 | if (rc) |
b6b38f70 | 5978 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5979 | |
5980 | cifs_buf_release(pSMB); | |
5981 | ||
5982 | if (rc == -EAGAIN) | |
5983 | goto SetEARetry; | |
5984 | ||
5985 | return rc; | |
5986 | } | |
1da177e4 | 5987 | #endif |
0eff0e26 SF |
5988 | |
5989 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
5990 | /* | |
5991 | * Years ago the kernel added a "dnotify" function for Samba server, | |
5992 | * to allow network clients (such as Windows) to display updated | |
5993 | * lists of files in directory listings automatically when | |
5994 | * files are added by one user when another user has the | |
5995 | * same directory open on their desktop. The Linux cifs kernel | |
5996 | * client hooked into the kernel side of this interface for | |
5997 | * the same reason, but ironically when the VFS moved from | |
5998 | * "dnotify" to "inotify" it became harder to plug in Linux | |
5999 | * network file system clients (the most obvious use case | |
6000 | * for notify interfaces is when multiple users can update | |
6001 | * the contents of the same directory - exactly what network | |
6002 | * file systems can do) although the server (Samba) could | |
6003 | * still use it. For the short term we leave the worker | |
6004 | * function ifdeffed out (below) until inotify is fixed | |
6005 | * in the VFS to make it easier to plug in network file | |
6006 | * system clients. If inotify turns out to be permanently | |
6007 | * incompatible for network fs clients, we could instead simply | |
6008 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6009 | */ | |
96daf2b0 | 6010 | int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6011 | const int notify_subdirs, const __u16 netfid, |
6012 | __u32 filter, struct file *pfile, int multishot, | |
6013 | const struct nls_table *nls_codepage) | |
6014 | { | |
6015 | int rc = 0; | |
6016 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6017 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6018 | struct dir_notify_req *dnotify_req; | |
6019 | int bytes_returned; | |
6020 | ||
6021 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6022 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6023 | (void **) &pSMBr); | |
6024 | if (rc) | |
6025 | return rc; | |
6026 | ||
6027 | pSMB->TotalParameterCount = 0 ; | |
6028 | pSMB->TotalDataCount = 0; | |
6029 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6030 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6031 | pSMB->MaxSetupCount = 4; |
6032 | pSMB->Reserved = 0; | |
6033 | pSMB->ParameterOffset = 0; | |
6034 | pSMB->DataCount = 0; | |
6035 | pSMB->DataOffset = 0; | |
6036 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6037 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6038 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6039 | if (notify_subdirs) | |
6040 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6041 | pSMB->Reserved2 = 0; | |
6042 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6043 | pSMB->Fid = netfid; /* file handle always le */ | |
6044 | pSMB->ByteCount = 0; | |
6045 | ||
6046 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6047 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6048 | CIFS_ASYNC_OP); | |
6049 | if (rc) { | |
6050 | cFYI(1, "Error in Notify = %d", rc); | |
6051 | } else { | |
6052 | /* Add file to outstanding requests */ | |
6053 | /* BB change to kmem cache alloc */ | |
6054 | dnotify_req = kmalloc( | |
6055 | sizeof(struct dir_notify_req), | |
6056 | GFP_KERNEL); | |
6057 | if (dnotify_req) { | |
6058 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6059 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6060 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6061 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6062 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6063 | dnotify_req->netfid = netfid; | |
6064 | dnotify_req->pfile = pfile; | |
6065 | dnotify_req->filter = filter; | |
6066 | dnotify_req->multishot = multishot; | |
6067 | spin_lock(&GlobalMid_Lock); | |
6068 | list_add_tail(&dnotify_req->lhead, | |
6069 | &GlobalDnotifyReqList); | |
6070 | spin_unlock(&GlobalMid_Lock); | |
6071 | } else | |
6072 | rc = -ENOMEM; | |
6073 | } | |
6074 | cifs_buf_release(pSMB); | |
6075 | return rc; | |
6076 | } | |
6077 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |