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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 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 */ | |
790fe579 | 88 | static void mark_open_files_invalid(struct cifsTconInfo *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 | |
108 | cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command) | |
109 | { | |
110 | int rc = 0; | |
111 | struct cifsSesInfo *ses; | |
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 LT |
229 | static int |
230 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *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, |
5815449d | 256 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
257 | { |
258 | int rc; | |
50c2f753 | 259 | struct smb_hdr *buffer; |
12b3b8ff | 260 | |
5815449d | 261 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 262 | if (rc) |
12b3b8ff SF |
263 | return rc; |
264 | ||
04fdabe1 | 265 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
266 | buffer->Mid = GetNextMid(ses->server); |
267 | if (ses->capabilities & CAP_UNICODE) | |
268 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 269 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
270 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
271 | ||
272 | /* uid, tid can stay at zero as set in header assemble */ | |
273 | ||
50c2f753 | 274 | /* BB add support for turning on the signing when |
12b3b8ff SF |
275 | this function is used after 1st of session setup requests */ |
276 | ||
277 | return rc; | |
278 | } | |
1da177e4 LT |
279 | |
280 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
281 | static int | |
f569599a JL |
282 | __smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, |
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 | |
308 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
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 | |
321 | smb_init_no_reconnect(int smb_command, int wct, struct cifsTconInfo *tcon, | |
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 LT |
369 | int |
370 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
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 | } |
254e55ed SF |
454 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
455 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
456 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 457 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 458 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
459 | /* even though we do not use raw we might as well set this |
460 | accurately, in case we ever find a need for it */ | |
790fe579 | 461 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 462 | server->max_rw = 0xFF00; |
254e55ed SF |
463 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
464 | } else { | |
eca6acf9 | 465 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
466 | server->capabilities = CAP_MPX_MODE; |
467 | } | |
b815f1e5 | 468 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 469 | if (tmp == -1) { |
25ee4a98 SF |
470 | /* OS/2 often does not set timezone therefore |
471 | * we must use server time to calc time zone. | |
b815f1e5 SF |
472 | * Could deviate slightly from the right zone. |
473 | * Smallest defined timezone difference is 15 minutes | |
474 | * (i.e. Nepal). Rounding up/down is done to match | |
475 | * this requirement. | |
25ee4a98 | 476 | */ |
b815f1e5 | 477 | int val, seconds, remain, result; |
25ee4a98 SF |
478 | struct timespec ts, utc; |
479 | utc = CURRENT_TIME; | |
c4a2c08d JL |
480 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
481 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 482 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 483 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 484 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 485 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 486 | seconds = abs(val); |
947a5067 | 487 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 488 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 489 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 490 | result += MIN_TZ_ADJ; |
790fe579 | 491 | if (val < 0) |
ad7a2926 | 492 | result = -result; |
b815f1e5 | 493 | server->timeAdj = result; |
25ee4a98 | 494 | } else { |
b815f1e5 SF |
495 | server->timeAdj = (int)tmp; |
496 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 497 | } |
b6b38f70 | 498 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 499 | |
3979877e | 500 | |
254e55ed | 501 | /* BB get server time for time conversions and add |
50c2f753 | 502 | code to use it and timezone since this is not UTC */ |
3979877e | 503 | |
50c2f753 | 504 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 505 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 506 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed SF |
507 | CIFS_CRYPTO_KEY_SIZE); |
508 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
509 | rc = -EIO; /* need cryptkey unless plain text */ | |
510 | goto neg_err_exit; | |
511 | } | |
3979877e | 512 | |
f19159dc | 513 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
514 | /* we will not end up setting signing flags - as no signing |
515 | was in LANMAN and server did not return the flags on */ | |
516 | goto signing_check; | |
7c7b25bc | 517 | #else /* weak security disabled */ |
790fe579 | 518 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
519 | cERROR(1, "mount failed, cifs module not built " |
520 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 521 | rc = -EOPNOTSUPP; |
7c7b25bc | 522 | #endif /* WEAK_PW_HASH */ |
254e55ed | 523 | goto neg_err_exit; |
790fe579 | 524 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
525 | /* unknown wct */ |
526 | rc = -EOPNOTSUPP; | |
527 | goto neg_err_exit; | |
528 | } | |
529 | /* else wct == 17 NTLM */ | |
530 | server->secMode = pSMBr->SecurityMode; | |
790fe579 | 531 | if ((server->secMode & SECMODE_USER) == 0) |
b6b38f70 | 532 | cFYI(1, "share mode security"); |
bdc4bf6e | 533 | |
790fe579 | 534 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 535 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 536 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 537 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
538 | cERROR(1, "Server requests plain text password" |
539 | " but client support disabled"); | |
9312f675 | 540 | |
790fe579 | 541 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 542 | server->secType = NTLMv2; |
790fe579 | 543 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 544 | server->secType = NTLM; |
790fe579 | 545 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 546 | server->secType = NTLMv2; |
a013689d SF |
547 | else if (secFlags & CIFSSEC_MAY_KRB5) |
548 | server->secType = Kerberos; | |
ac683924 | 549 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 550 | server->secType = RawNTLMSSP; |
a013689d SF |
551 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
552 | server->secType = LANMAN; | |
a013689d SF |
553 | else { |
554 | rc = -EOPNOTSUPP; | |
b6b38f70 | 555 | cERROR(1, "Invalid security type"); |
a013689d SF |
556 | goto neg_err_exit; |
557 | } | |
558 | /* else ... any others ...? */ | |
254e55ed SF |
559 | |
560 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
561 | little endian */ | |
562 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
563 | /* probably no need to store and check maxvcs */ | |
564 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 565 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
eca6acf9 | 566 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 567 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 568 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
569 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
570 | server->timeAdj *= 60; | |
254e55ed | 571 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 572 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed SF |
573 | CIFS_CRYPTO_KEY_SIZE); |
574 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
575 | && (pSMBr->EncryptionKeyLength == 0)) { | |
576 | /* decode security blob */ | |
577 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
578 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
579 | goto neg_err_exit; | |
580 | } | |
1da177e4 | 581 | |
254e55ed SF |
582 | /* BB might be helpful to save off the domain of server here */ |
583 | ||
50c2f753 | 584 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed | 585 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
820a803f | 586 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 587 | if (count < 16) { |
254e55ed | 588 | rc = -EIO; |
e187e44e JL |
589 | goto neg_err_exit; |
590 | } | |
3f9bcca7 | 591 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 592 | if (server->srv_count > 1) { |
3f9bcca7 | 593 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
594 | if (memcmp(server->server_GUID, |
595 | pSMBr->u.extended_response. | |
596 | GUID, 16) != 0) { | |
b6b38f70 | 597 | cFYI(1, "server UID changed"); |
254e55ed | 598 | memcpy(server->server_GUID, |
e187e44e JL |
599 | pSMBr->u.extended_response.GUID, |
600 | 16); | |
601 | } | |
e7ddee90 | 602 | } else { |
3f9bcca7 | 603 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
604 | memcpy(server->server_GUID, |
605 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 606 | } |
e187e44e JL |
607 | |
608 | if (count == 16) { | |
609 | server->secType = RawNTLMSSP; | |
254e55ed SF |
610 | } else { |
611 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
612 | SecurityBlob, count - 16, |
613 | server); | |
ef571cad | 614 | if (rc == 1) |
e545937a | 615 | rc = 0; |
ef571cad | 616 | else |
254e55ed | 617 | rc = -EINVAL; |
2b149f11 SP |
618 | if (server->secType == Kerberos) { |
619 | if (!server->sec_kerberos && | |
620 | !server->sec_mskerberos) | |
621 | rc = -EOPNOTSUPP; | |
622 | } else if (server->secType == RawNTLMSSP) { | |
623 | if (!server->sec_ntlmssp) | |
624 | rc = -EOPNOTSUPP; | |
625 | } else | |
626 | rc = -EOPNOTSUPP; | |
1da177e4 | 627 | } |
254e55ed SF |
628 | } else |
629 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
630 | ||
6344a423 | 631 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 632 | signing_check: |
6344a423 | 633 | #endif |
762e5ab7 SF |
634 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
635 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
636 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 637 | cFYI(1, "Signing disabled"); |
abb63d6c | 638 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 639 | cERROR(1, "Server requires " |
7111d214 | 640 | "packet signing to be enabled in " |
b6b38f70 | 641 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
642 | rc = -EOPNOTSUPP; |
643 | } | |
50c2f753 | 644 | server->secMode &= |
254e55ed | 645 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
646 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
647 | /* signing required */ | |
b6b38f70 | 648 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
762e5ab7 SF |
649 | if ((server->secMode & |
650 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
b6b38f70 | 651 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 652 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
653 | } else |
654 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
655 | } else { | |
656 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 657 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 658 | server->secMode &= |
254e55ed | 659 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 660 | } |
50c2f753 SF |
661 | |
662 | neg_err_exit: | |
4a6d87f1 | 663 | cifs_buf_release(pSMB); |
254e55ed | 664 | |
b6b38f70 | 665 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
666 | return rc; |
667 | } | |
668 | ||
669 | int | |
670 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
671 | { | |
672 | struct smb_hdr *smb_buffer; | |
1da177e4 | 673 | int rc = 0; |
1da177e4 | 674 | |
b6b38f70 | 675 | cFYI(1, "In tree disconnect"); |
1da177e4 | 676 | |
f1987b44 JL |
677 | /* BB: do we need to check this? These should never be NULL. */ |
678 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
679 | return -EIO; | |
1da177e4 | 680 | |
f1987b44 JL |
681 | /* |
682 | * No need to return error on this operation if tid invalidated and | |
683 | * closed on server already e.g. due to tcp session crashing. Also, | |
684 | * the tcon is no longer on the list, so no need to take lock before | |
685 | * checking this. | |
686 | */ | |
268875b9 | 687 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 688 | return 0; |
1da177e4 | 689 | |
50c2f753 | 690 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 691 | (void **)&smb_buffer); |
f1987b44 | 692 | if (rc) |
1da177e4 | 693 | return rc; |
133672ef SF |
694 | |
695 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 696 | if (rc) |
b6b38f70 | 697 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 698 | |
50c2f753 | 699 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 700 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
701 | if (rc == -EAGAIN) |
702 | rc = 0; | |
703 | ||
704 | return rc; | |
705 | } | |
706 | ||
766fdbb5 JL |
707 | /* |
708 | * This is a no-op for now. We're not really interested in the reply, but | |
709 | * rather in the fact that the server sent one and that server->lstrp | |
710 | * gets updated. | |
711 | * | |
712 | * FIXME: maybe we should consider checking that the reply matches request? | |
713 | */ | |
714 | static void | |
715 | cifs_echo_callback(struct mid_q_entry *mid) | |
716 | { | |
717 | struct TCP_Server_Info *server = mid->callback_data; | |
718 | ||
719 | DeleteMidQEntry(mid); | |
720 | atomic_dec(&server->inFlight); | |
721 | wake_up(&server->request_q); | |
722 | } | |
723 | ||
724 | int | |
725 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
726 | { | |
727 | ECHO_REQ *smb; | |
728 | int rc = 0; | |
fcc31cb6 | 729 | struct kvec iov; |
766fdbb5 JL |
730 | |
731 | cFYI(1, "In echo request"); | |
732 | ||
733 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
734 | if (rc) | |
735 | return rc; | |
736 | ||
737 | /* set up echo request */ | |
5443d130 | 738 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
739 | smb->hdr.WordCount = 1; |
740 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 741 | put_bcc(1, &smb->hdr); |
766fdbb5 | 742 | smb->Data[0] = 'a'; |
be8e3b00 | 743 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
744 | iov.iov_base = smb; |
745 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 746 | |
59ffd841 | 747 | rc = cifs_call_async(server, &iov, 1, cifs_echo_callback, server, true); |
766fdbb5 JL |
748 | if (rc) |
749 | cFYI(1, "Echo request failed: %d", rc); | |
750 | ||
751 | cifs_small_buf_release(smb); | |
752 | ||
753 | return rc; | |
754 | } | |
755 | ||
1da177e4 LT |
756 | int |
757 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
758 | { | |
1da177e4 LT |
759 | LOGOFF_ANDX_REQ *pSMB; |
760 | int rc = 0; | |
1da177e4 | 761 | |
b6b38f70 | 762 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 763 | |
14fbf50d JL |
764 | /* |
765 | * BB: do we need to check validity of ses and server? They should | |
766 | * always be valid since we have an active reference. If not, that | |
767 | * should probably be a BUG() | |
768 | */ | |
769 | if (!ses || !ses->server) | |
3b795210 SF |
770 | return -EIO; |
771 | ||
d7b619cf | 772 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
773 | if (ses->need_reconnect) |
774 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
775 | already closed due to reconnect */ | |
1da177e4 LT |
776 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
777 | if (rc) { | |
d7b619cf | 778 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
779 | return rc; |
780 | } | |
781 | ||
3b795210 | 782 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 783 | |
3b795210 | 784 | if (ses->server->secMode & |
1da177e4 LT |
785 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
786 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
787 | |
788 | pSMB->hdr.Uid = ses->Suid; | |
789 | ||
790 | pSMB->AndXCommand = 0xFF; | |
133672ef | 791 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 792 | session_already_dead: |
d7b619cf | 793 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
794 | |
795 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 796 | since server closed smb session, no sense reporting |
1da177e4 LT |
797 | error */ |
798 | if (rc == -EAGAIN) | |
799 | rc = 0; | |
800 | return rc; | |
801 | } | |
802 | ||
2d785a50 SF |
803 | int |
804 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
805 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
806 | { | |
807 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
808 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
809 | struct unlink_psx_rq *pRqD; | |
810 | int name_len; | |
811 | int rc = 0; | |
812 | int bytes_returned = 0; | |
813 | __u16 params, param_offset, offset, byte_count; | |
814 | ||
b6b38f70 | 815 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
816 | PsxDelete: |
817 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
818 | (void **) &pSMBr); | |
819 | if (rc) | |
820 | return rc; | |
821 | ||
822 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
823 | name_len = | |
824 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
825 | PATH_MAX, nls_codepage, remap); | |
826 | name_len++; /* trailing null */ | |
827 | name_len *= 2; | |
828 | } else { /* BB add path length overrun check */ | |
829 | name_len = strnlen(fileName, PATH_MAX); | |
830 | name_len++; /* trailing null */ | |
831 | strncpy(pSMB->FileName, fileName, name_len); | |
832 | } | |
833 | ||
834 | params = 6 + name_len; | |
835 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
836 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
837 | pSMB->MaxSetupCount = 0; | |
838 | pSMB->Reserved = 0; | |
839 | pSMB->Flags = 0; | |
840 | pSMB->Timeout = 0; | |
841 | pSMB->Reserved2 = 0; | |
842 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
843 | InformationLevel) - 4; | |
844 | offset = param_offset + params; | |
845 | ||
846 | /* Setup pointer to Request Data (inode type) */ | |
847 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
848 | pRqD->type = cpu_to_le16(type); | |
849 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
850 | pSMB->DataOffset = cpu_to_le16(offset); | |
851 | pSMB->SetupCount = 1; | |
852 | pSMB->Reserved3 = 0; | |
853 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
854 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
855 | ||
856 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
857 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
858 | pSMB->ParameterCount = cpu_to_le16(params); | |
859 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
860 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
861 | pSMB->Reserved4 = 0; | |
be8e3b00 | 862 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
863 | pSMB->ByteCount = cpu_to_le16(byte_count); |
864 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
865 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 866 | if (rc) |
b6b38f70 | 867 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
868 | cifs_buf_release(pSMB); |
869 | ||
870 | cifs_stats_inc(&tcon->num_deletes); | |
871 | ||
872 | if (rc == -EAGAIN) | |
873 | goto PsxDelete; | |
874 | ||
875 | return rc; | |
876 | } | |
877 | ||
1da177e4 | 878 | int |
737b758c SF |
879 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
880 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
881 | { |
882 | DELETE_FILE_REQ *pSMB = NULL; | |
883 | DELETE_FILE_RSP *pSMBr = NULL; | |
884 | int rc = 0; | |
885 | int bytes_returned; | |
886 | int name_len; | |
887 | ||
888 | DelFileRetry: | |
889 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
890 | (void **) &pSMBr); | |
891 | if (rc) | |
892 | return rc; | |
893 | ||
894 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
895 | name_len = | |
50c2f753 | 896 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 897 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
898 | name_len++; /* trailing null */ |
899 | name_len *= 2; | |
09d1db5c | 900 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
901 | name_len = strnlen(fileName, PATH_MAX); |
902 | name_len++; /* trailing null */ | |
903 | strncpy(pSMB->fileName, fileName, name_len); | |
904 | } | |
905 | pSMB->SearchAttributes = | |
906 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
907 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 908 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
909 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
910 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
911 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 912 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 913 | if (rc) |
b6b38f70 | 914 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
915 | |
916 | cifs_buf_release(pSMB); | |
917 | if (rc == -EAGAIN) | |
918 | goto DelFileRetry; | |
919 | ||
920 | return rc; | |
921 | } | |
922 | ||
923 | int | |
50c2f753 | 924 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 925 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
926 | { |
927 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
928 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
929 | int rc = 0; | |
930 | int bytes_returned; | |
931 | int name_len; | |
932 | ||
b6b38f70 | 933 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
934 | RmDirRetry: |
935 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
936 | (void **) &pSMBr); | |
937 | if (rc) | |
938 | return rc; | |
939 | ||
940 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
941 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
942 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
943 | name_len++; /* trailing null */ |
944 | name_len *= 2; | |
09d1db5c | 945 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
946 | name_len = strnlen(dirName, PATH_MAX); |
947 | name_len++; /* trailing null */ | |
948 | strncpy(pSMB->DirName, dirName, name_len); | |
949 | } | |
950 | ||
951 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 952 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
953 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
954 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
955 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 956 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 957 | if (rc) |
b6b38f70 | 958 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
959 | |
960 | cifs_buf_release(pSMB); | |
961 | if (rc == -EAGAIN) | |
962 | goto RmDirRetry; | |
963 | return rc; | |
964 | } | |
965 | ||
966 | int | |
967 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 968 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
969 | { |
970 | int rc = 0; | |
971 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
972 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
973 | int bytes_returned; | |
974 | int name_len; | |
975 | ||
b6b38f70 | 976 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
977 | MkDirRetry: |
978 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
979 | (void **) &pSMBr); | |
980 | if (rc) | |
981 | return rc; | |
982 | ||
983 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 984 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 985 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
986 | name_len++; /* trailing null */ |
987 | name_len *= 2; | |
09d1db5c | 988 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
989 | name_len = strnlen(name, PATH_MAX); |
990 | name_len++; /* trailing null */ | |
991 | strncpy(pSMB->DirName, name, name_len); | |
992 | } | |
993 | ||
994 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 995 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
996 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
997 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
998 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 999 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 1000 | if (rc) |
b6b38f70 | 1001 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 1002 | |
1da177e4 LT |
1003 | cifs_buf_release(pSMB); |
1004 | if (rc == -EAGAIN) | |
1005 | goto MkDirRetry; | |
1006 | return rc; | |
1007 | } | |
1008 | ||
2dd29d31 SF |
1009 | int |
1010 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 1011 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1012 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1013 | const struct nls_table *nls_codepage, int remap) |
1014 | { | |
1015 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1016 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1017 | int name_len; | |
1018 | int rc = 0; | |
1019 | int bytes_returned = 0; | |
2dd29d31 | 1020 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1021 | OPEN_PSX_REQ *pdata; |
1022 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1023 | |
b6b38f70 | 1024 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1025 | PsxCreat: |
1026 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1027 | (void **) &pSMBr); | |
1028 | if (rc) | |
1029 | return rc; | |
1030 | ||
1031 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1032 | name_len = | |
1033 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1034 | PATH_MAX, nls_codepage, remap); | |
1035 | name_len++; /* trailing null */ | |
1036 | name_len *= 2; | |
1037 | } else { /* BB improve the check for buffer overruns BB */ | |
1038 | name_len = strnlen(name, PATH_MAX); | |
1039 | name_len++; /* trailing null */ | |
1040 | strncpy(pSMB->FileName, name, name_len); | |
1041 | } | |
1042 | ||
1043 | params = 6 + name_len; | |
1044 | count = sizeof(OPEN_PSX_REQ); | |
1045 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1046 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1047 | pSMB->MaxSetupCount = 0; | |
1048 | pSMB->Reserved = 0; | |
1049 | pSMB->Flags = 0; | |
1050 | pSMB->Timeout = 0; | |
1051 | pSMB->Reserved2 = 0; | |
1052 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1053 | InformationLevel) - 4; |
2dd29d31 | 1054 | offset = param_offset + params; |
2dd29d31 | 1055 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1056 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1057 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1058 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1059 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1060 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1061 | pSMB->DataOffset = cpu_to_le16(offset); | |
1062 | pSMB->SetupCount = 1; | |
1063 | pSMB->Reserved3 = 0; | |
1064 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1065 | byte_count = 3 /* pad */ + params + count; | |
1066 | ||
1067 | pSMB->DataCount = cpu_to_le16(count); | |
1068 | pSMB->ParameterCount = cpu_to_le16(params); | |
1069 | pSMB->TotalDataCount = pSMB->DataCount; | |
1070 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1071 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1072 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1073 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1074 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1075 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1076 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1077 | if (rc) { | |
b6b38f70 | 1078 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1079 | goto psx_create_err; |
1080 | } | |
1081 | ||
b6b38f70 | 1082 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1083 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1084 | ||
820a803f | 1085 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1086 | rc = -EIO; /* bad smb */ |
1087 | goto psx_create_err; | |
1088 | } | |
1089 | ||
1090 | /* copy return information to pRetData */ | |
50c2f753 | 1091 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1092 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1093 | |
2dd29d31 | 1094 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1095 | if (netfid) |
2dd29d31 SF |
1096 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1097 | /* Let caller know file was created so we can set the mode. */ | |
1098 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1099 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1100 | *pOplock |= CIFS_CREATE_ACTION; |
1101 | /* check to make sure response data is there */ | |
8f2376ad CG |
1102 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1103 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1104 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1105 | } else { |
820a803f | 1106 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1107 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1108 | cERROR(1, "Open response data too small"); |
8f2376ad | 1109 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1110 | goto psx_create_err; |
1111 | } | |
50c2f753 | 1112 | memcpy((char *) pRetData, |
cbac3cba | 1113 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1114 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1115 | } |
2dd29d31 SF |
1116 | |
1117 | psx_create_err: | |
1118 | cifs_buf_release(pSMB); | |
1119 | ||
65bc98b0 SF |
1120 | if (posix_flags & SMB_O_DIRECTORY) |
1121 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1122 | else | |
1123 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1124 | |
1125 | if (rc == -EAGAIN) | |
1126 | goto PsxCreat; | |
1127 | ||
50c2f753 | 1128 | return rc; |
2dd29d31 SF |
1129 | } |
1130 | ||
a9d02ad4 SF |
1131 | static __u16 convert_disposition(int disposition) |
1132 | { | |
1133 | __u16 ofun = 0; | |
1134 | ||
1135 | switch (disposition) { | |
1136 | case FILE_SUPERSEDE: | |
1137 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1138 | break; | |
1139 | case FILE_OPEN: | |
1140 | ofun = SMBOPEN_OAPPEND; | |
1141 | break; | |
1142 | case FILE_CREATE: | |
1143 | ofun = SMBOPEN_OCREATE; | |
1144 | break; | |
1145 | case FILE_OPEN_IF: | |
1146 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1147 | break; | |
1148 | case FILE_OVERWRITE: | |
1149 | ofun = SMBOPEN_OTRUNC; | |
1150 | break; | |
1151 | case FILE_OVERWRITE_IF: | |
1152 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1153 | break; | |
1154 | default: | |
b6b38f70 | 1155 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1156 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1157 | } | |
1158 | return ofun; | |
1159 | } | |
1160 | ||
35fc37d5 JL |
1161 | static int |
1162 | access_flags_to_smbopen_mode(const int access_flags) | |
1163 | { | |
1164 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1165 | ||
1166 | if (masked_flags == GENERIC_READ) | |
1167 | return SMBOPEN_READ; | |
1168 | else if (masked_flags == GENERIC_WRITE) | |
1169 | return SMBOPEN_WRITE; | |
1170 | ||
1171 | /* just go for read/write */ | |
1172 | return SMBOPEN_READWRITE; | |
1173 | } | |
1174 | ||
a9d02ad4 SF |
1175 | int |
1176 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1177 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1178 | const int access_flags, const int create_options, __u16 *netfid, |
1179 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1180 | const struct nls_table *nls_codepage, int remap) |
1181 | { | |
1182 | int rc = -EACCES; | |
1183 | OPENX_REQ *pSMB = NULL; | |
1184 | OPENX_RSP *pSMBr = NULL; | |
1185 | int bytes_returned; | |
1186 | int name_len; | |
1187 | __u16 count; | |
1188 | ||
1189 | OldOpenRetry: | |
1190 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1191 | (void **) &pSMBr); | |
1192 | if (rc) | |
1193 | return rc; | |
1194 | ||
1195 | pSMB->AndXCommand = 0xFF; /* none */ | |
1196 | ||
1197 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1198 | count = 1; /* account for one byte pad to word boundary */ | |
1199 | name_len = | |
1200 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1201 | fileName, PATH_MAX, nls_codepage, remap); | |
1202 | name_len++; /* trailing null */ | |
1203 | name_len *= 2; | |
1204 | } else { /* BB improve check for buffer overruns BB */ | |
1205 | count = 0; /* no pad */ | |
1206 | name_len = strnlen(fileName, PATH_MAX); | |
1207 | name_len++; /* trailing null */ | |
1208 | strncpy(pSMB->fileName, fileName, name_len); | |
1209 | } | |
1210 | if (*pOplock & REQ_OPLOCK) | |
1211 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1212 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1213 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1214 | |
a9d02ad4 | 1215 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1216 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1217 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1218 | /* set file as system file if special file such | |
1219 | as fifo and server expecting SFU style and | |
1220 | no Unix extensions */ | |
1221 | ||
790fe579 SF |
1222 | if (create_options & CREATE_OPTION_SPECIAL) |
1223 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1224 | else /* BB FIXME BB */ |
1225 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1226 | |
67750fb9 JL |
1227 | if (create_options & CREATE_OPTION_READONLY) |
1228 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1229 | |
1230 | /* BB FIXME BB */ | |
50c2f753 SF |
1231 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1232 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1233 | /* BB FIXME END BB */ |
3e87d803 SF |
1234 | |
1235 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1236 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1237 | count += name_len; |
be8e3b00 | 1238 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1239 | |
1240 | pSMB->ByteCount = cpu_to_le16(count); | |
1241 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1242 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1243 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1244 | cifs_stats_inc(&tcon->num_opens); |
1245 | if (rc) { | |
b6b38f70 | 1246 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1247 | } else { |
1248 | /* BB verify if wct == 15 */ | |
1249 | ||
582d21e5 | 1250 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1251 | |
1252 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1253 | /* Let caller know file was created so we can set the mode. */ | |
1254 | /* Do we care about the CreateAction in any other cases? */ | |
1255 | /* BB FIXME BB */ | |
790fe579 | 1256 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1257 | *pOplock |= CIFS_CREATE_ACTION; */ |
1258 | /* BB FIXME END */ | |
1259 | ||
790fe579 | 1260 | if (pfile_info) { |
a9d02ad4 SF |
1261 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1262 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1263 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1264 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1265 | pfile_info->Attributes = |
50c2f753 | 1266 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1267 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1268 | pfile_info->AllocationSize = |
1269 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1270 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1271 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1272 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1273 | } |
1274 | } | |
1275 | ||
1276 | cifs_buf_release(pSMB); | |
1277 | if (rc == -EAGAIN) | |
1278 | goto OldOpenRetry; | |
1279 | return rc; | |
1280 | } | |
1281 | ||
1da177e4 LT |
1282 | int |
1283 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1284 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1285 | const int access_flags, const int create_options, __u16 *netfid, |
1286 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1287 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1288 | { |
1289 | int rc = -EACCES; | |
1290 | OPEN_REQ *pSMB = NULL; | |
1291 | OPEN_RSP *pSMBr = NULL; | |
1292 | int bytes_returned; | |
1293 | int name_len; | |
1294 | __u16 count; | |
1295 | ||
1296 | openRetry: | |
1297 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1298 | (void **) &pSMBr); | |
1299 | if (rc) | |
1300 | return rc; | |
1301 | ||
1302 | pSMB->AndXCommand = 0xFF; /* none */ | |
1303 | ||
1304 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1305 | count = 1; /* account for one byte pad to word boundary */ | |
1306 | name_len = | |
b1a45695 | 1307 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1308 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1309 | name_len++; /* trailing null */ |
1310 | name_len *= 2; | |
1311 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1312 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1313 | count = 0; /* no pad */ |
1314 | name_len = strnlen(fileName, PATH_MAX); | |
1315 | name_len++; /* trailing null */ | |
1316 | pSMB->NameLength = cpu_to_le16(name_len); | |
1317 | strncpy(pSMB->fileName, fileName, name_len); | |
1318 | } | |
1319 | if (*pOplock & REQ_OPLOCK) | |
1320 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1321 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1322 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1323 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1324 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1325 | /* set file as system file if special file such |
1326 | as fifo and server expecting SFU style and | |
1327 | no Unix extensions */ | |
790fe579 | 1328 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1329 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1330 | else | |
1331 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1332 | |
1da177e4 LT |
1333 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1334 | /* but it helps speed up case sensitive checks for other | |
1335 | servers such as Samba */ | |
1336 | if (tcon->ses->capabilities & CAP_UNIX) | |
1337 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1338 | ||
67750fb9 JL |
1339 | if (create_options & CREATE_OPTION_READONLY) |
1340 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1341 | ||
1da177e4 LT |
1342 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1343 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1344 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1345 | /* BB Expirement with various impersonation levels and verify */ |
1346 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1347 | pSMB->SecurityFlags = |
1348 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1349 | ||
1350 | count += name_len; | |
be8e3b00 | 1351 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1352 | |
1353 | pSMB->ByteCount = cpu_to_le16(count); | |
1354 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1355 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1356 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1357 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1358 | if (rc) { |
b6b38f70 | 1359 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1360 | } else { |
09d1db5c | 1361 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1362 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1363 | /* Let caller know file was created so we can set the mode. */ | |
1364 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1365 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1366 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1367 | if (pfile_info) { |
61e74801 SF |
1368 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1369 | 36 /* CreationTime to Attributes */); | |
1370 | /* the file_info buf is endian converted by caller */ | |
1371 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1372 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1373 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1374 | pfile_info->DeletePending = 0; | |
1da177e4 | 1375 | } |
1da177e4 | 1376 | } |
a5a2b489 | 1377 | |
1da177e4 LT |
1378 | cifs_buf_release(pSMB); |
1379 | if (rc == -EAGAIN) | |
1380 | goto openRetry; | |
1381 | return rc; | |
1382 | } | |
1383 | ||
1da177e4 | 1384 | int |
50c2f753 SF |
1385 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1386 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1387 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1388 | { |
1389 | int rc = -EACCES; | |
1390 | READ_REQ *pSMB = NULL; | |
1391 | READ_RSP *pSMBr = NULL; | |
1392 | char *pReadData = NULL; | |
bfa0d75a | 1393 | int wct; |
ec637e3f SF |
1394 | int resp_buf_type = 0; |
1395 | struct kvec iov[1]; | |
1da177e4 | 1396 | |
b6b38f70 | 1397 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1398 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1399 | wct = 12; |
4c3130ef | 1400 | else { |
bfa0d75a | 1401 | wct = 10; /* old style read */ |
4c3130ef SF |
1402 | if ((lseek >> 32) > 0) { |
1403 | /* can not handle this big offset for old */ | |
1404 | return -EIO; | |
1405 | } | |
1406 | } | |
1da177e4 LT |
1407 | |
1408 | *nbytes = 0; | |
ec637e3f | 1409 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1410 | if (rc) |
1411 | return rc; | |
1412 | ||
1413 | /* tcon and ses pointer are checked in smb_init */ | |
1414 | if (tcon->ses->server == NULL) | |
1415 | return -ECONNABORTED; | |
1416 | ||
ec637e3f | 1417 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1418 | pSMB->Fid = netfid; |
1419 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1420 | if (wct == 12) |
bfa0d75a | 1421 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
bfa0d75a | 1422 | |
1da177e4 LT |
1423 | pSMB->Remaining = 0; |
1424 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1425 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1426 | if (wct == 12) |
bfa0d75a SF |
1427 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1428 | else { | |
1429 | /* old style read */ | |
50c2f753 | 1430 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1431 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1432 | pSMBW->ByteCount = 0; |
bfa0d75a | 1433 | } |
ec637e3f SF |
1434 | |
1435 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1436 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1437 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1438 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1439 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1440 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1441 | if (rc) { |
b6b38f70 | 1442 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1443 | } else { |
1444 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1445 | data_length = data_length << 16; | |
1446 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1447 | *nbytes = data_length; | |
1448 | ||
1449 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1450 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1451 | || (data_length > count)) { |
b6b38f70 JP |
1452 | cFYI(1, "bad length %d for count %d", |
1453 | data_length, count); | |
1da177e4 LT |
1454 | rc = -EIO; |
1455 | *nbytes = 0; | |
1456 | } else { | |
ec637e3f | 1457 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1458 | le16_to_cpu(pSMBr->DataOffset); |
1459 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1460 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1461 | rc = -EFAULT; |
26f57364 | 1462 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1463 | if (*buf) |
50c2f753 | 1464 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1465 | } |
1466 | } | |
1da177e4 | 1467 | |
4b8f930f | 1468 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1469 | if (*buf) { |
1470 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1471 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1472 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1473 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1474 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1475 | /* return buffer to caller to free */ |
1476 | *buf = iov[0].iov_base; | |
790fe579 | 1477 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1478 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1479 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1480 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1481 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1482 | |
1483 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1484 | since file handle passed in no longer valid */ |
1485 | return rc; | |
1486 | } | |
1487 | ||
ec637e3f | 1488 | |
1da177e4 | 1489 | int |
fa2989f4 PS |
1490 | CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, |
1491 | unsigned int *nbytes, const char *buf, | |
50c2f753 | 1492 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1493 | { |
1494 | int rc = -EACCES; | |
1495 | WRITE_REQ *pSMB = NULL; | |
1496 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1497 | int bytes_returned, wct; |
1da177e4 LT |
1498 | __u32 bytes_sent; |
1499 | __u16 byte_count; | |
fa2989f4 PS |
1500 | __u32 pid = io_parms->pid; |
1501 | __u16 netfid = io_parms->netfid; | |
1502 | __u64 offset = io_parms->offset; | |
1503 | struct cifsTconInfo *tcon = io_parms->tcon; | |
1504 | unsigned int count = io_parms->length; | |
1da177e4 | 1505 | |
a24e2d7d SF |
1506 | *nbytes = 0; |
1507 | ||
b6b38f70 | 1508 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1509 | if (tcon->ses == NULL) |
1c955187 SF |
1510 | return -ECONNABORTED; |
1511 | ||
790fe579 | 1512 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1513 | wct = 14; |
4c3130ef | 1514 | else { |
1c955187 | 1515 | wct = 12; |
4c3130ef SF |
1516 | if ((offset >> 32) > 0) { |
1517 | /* can not handle big offset for old srv */ | |
1518 | return -EIO; | |
1519 | } | |
1520 | } | |
1c955187 SF |
1521 | |
1522 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1523 | (void **) &pSMBr); |
1524 | if (rc) | |
1525 | return rc; | |
fa2989f4 PS |
1526 | |
1527 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1528 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1529 | ||
1da177e4 LT |
1530 | /* tcon and ses pointer are checked in smb_init */ |
1531 | if (tcon->ses->server == NULL) | |
1532 | return -ECONNABORTED; | |
1533 | ||
1534 | pSMB->AndXCommand = 0xFF; /* none */ | |
1535 | pSMB->Fid = netfid; | |
1536 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1537 | if (wct == 14) |
1c955187 | 1538 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1539 | |
1da177e4 LT |
1540 | pSMB->Reserved = 0xFFFFFFFF; |
1541 | pSMB->WriteMode = 0; | |
1542 | pSMB->Remaining = 0; | |
1543 | ||
50c2f753 | 1544 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1545 | can send more if LARGE_WRITE_X capability returned by the server and if |
1546 | our buffer is big enough or if we convert to iovecs on socket writes | |
1547 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1548 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1549 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1550 | } else { | |
1551 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1552 | & ~0xFF; | |
1553 | } | |
1554 | ||
1555 | if (bytes_sent > count) | |
1556 | bytes_sent = count; | |
1557 | pSMB->DataOffset = | |
50c2f753 | 1558 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1559 | if (buf) |
61e74801 | 1560 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1561 | else if (ubuf) { |
1562 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1563 | cifs_buf_release(pSMB); |
1564 | return -EFAULT; | |
1565 | } | |
e30dcf3a | 1566 | } else if (count != 0) { |
1da177e4 LT |
1567 | /* No buffer */ |
1568 | cifs_buf_release(pSMB); | |
1569 | return -EINVAL; | |
e30dcf3a | 1570 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1571 | if (wct == 14) |
e30dcf3a | 1572 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1573 | else /* wct == 12 */ |
e30dcf3a | 1574 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1575 | |
1da177e4 LT |
1576 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1577 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1578 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1579 | |
790fe579 | 1580 | if (wct == 14) |
1c955187 | 1581 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1582 | else { /* old style write has byte count 4 bytes earlier |
1583 | so 4 bytes pad */ | |
1584 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1585 | (struct smb_com_writex_req *)pSMB; |
1586 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1587 | } | |
1da177e4 LT |
1588 | |
1589 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1590 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1591 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1592 | if (rc) { |
f19159dc | 1593 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1594 | } else { |
1595 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1596 | *nbytes = (*nbytes) << 16; | |
1597 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1598 | |
1599 | /* | |
1600 | * Mask off high 16 bits when bytes written as returned by the | |
1601 | * server is greater than bytes requested by the client. Some | |
1602 | * OS/2 servers are known to set incorrect CountHigh values. | |
1603 | */ | |
1604 | if (*nbytes > count) | |
1605 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1606 | } |
1607 | ||
1608 | cifs_buf_release(pSMB); | |
1609 | ||
50c2f753 | 1610 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1611 | since file handle passed in no longer valid */ |
1612 | ||
1613 | return rc; | |
1614 | } | |
1615 | ||
c28c89fc JL |
1616 | void |
1617 | cifs_writedata_release(struct kref *refcount) | |
1618 | { | |
1619 | struct cifs_writedata *wdata = container_of(refcount, | |
1620 | struct cifs_writedata, refcount); | |
1621 | ||
1622 | if (wdata->cfile) | |
1623 | cifsFileInfo_put(wdata->cfile); | |
1624 | ||
1625 | kfree(wdata); | |
1626 | } | |
1627 | ||
1628 | /* | |
1629 | * Write failed with a retryable error. Resend the write request. It's also | |
1630 | * possible that the page was redirtied so re-clean the page. | |
1631 | */ | |
1632 | static void | |
1633 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1634 | { | |
1635 | int i, rc; | |
1636 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1637 | ||
1638 | for (i = 0; i < wdata->nr_pages; i++) { | |
1639 | lock_page(wdata->pages[i]); | |
1640 | clear_page_dirty_for_io(wdata->pages[i]); | |
1641 | } | |
1642 | ||
1643 | do { | |
1644 | rc = cifs_async_writev(wdata); | |
1645 | } while (rc == -EAGAIN); | |
1646 | ||
1647 | for (i = 0; i < wdata->nr_pages; i++) { | |
1648 | if (rc != 0) | |
1649 | SetPageError(wdata->pages[i]); | |
1650 | unlock_page(wdata->pages[i]); | |
1651 | } | |
1652 | ||
1653 | mapping_set_error(inode->i_mapping, rc); | |
1654 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1655 | } | |
1656 | ||
1657 | static void | |
1658 | cifs_writev_complete(struct work_struct *work) | |
1659 | { | |
1660 | struct cifs_writedata *wdata = container_of(work, | |
1661 | struct cifs_writedata, work); | |
1662 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1663 | int i = 0; | |
1664 | ||
1665 | if (wdata->result == 0) { | |
1666 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); | |
1667 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), | |
1668 | wdata->bytes); | |
1669 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1670 | return cifs_writev_requeue(wdata); | |
1671 | ||
1672 | for (i = 0; i < wdata->nr_pages; i++) { | |
1673 | struct page *page = wdata->pages[i]; | |
1674 | if (wdata->result == -EAGAIN) | |
1675 | __set_page_dirty_nobuffers(page); | |
1676 | else if (wdata->result < 0) | |
1677 | SetPageError(page); | |
1678 | end_page_writeback(page); | |
1679 | page_cache_release(page); | |
1680 | } | |
1681 | if (wdata->result != -EAGAIN) | |
1682 | mapping_set_error(inode->i_mapping, wdata->result); | |
1683 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1684 | } | |
1685 | ||
1686 | struct cifs_writedata * | |
1687 | cifs_writedata_alloc(unsigned int nr_pages) | |
1688 | { | |
1689 | struct cifs_writedata *wdata; | |
1690 | ||
1691 | /* this would overflow */ | |
1692 | if (nr_pages == 0) { | |
1693 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
1694 | return NULL; | |
1695 | } | |
1696 | ||
1697 | /* writedata + number of page pointers */ | |
1698 | wdata = kzalloc(sizeof(*wdata) + | |
1699 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1700 | if (wdata != NULL) { | |
1701 | INIT_WORK(&wdata->work, cifs_writev_complete); | |
1702 | kref_init(&wdata->refcount); | |
1703 | } | |
1704 | return wdata; | |
1705 | } | |
1706 | ||
1707 | /* | |
1708 | * Check the midState and signature on received buffer (if any), and queue the | |
1709 | * workqueue completion task. | |
1710 | */ | |
1711 | static void | |
1712 | cifs_writev_callback(struct mid_q_entry *mid) | |
1713 | { | |
1714 | struct cifs_writedata *wdata = mid->callback_data; | |
1715 | struct cifsTconInfo *tcon = tlink_tcon(wdata->cfile->tlink); | |
1716 | unsigned int written; | |
1717 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1718 | ||
1719 | switch (mid->midState) { | |
1720 | case MID_RESPONSE_RECEIVED: | |
1721 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1722 | if (wdata->result != 0) | |
1723 | break; | |
1724 | ||
1725 | written = le16_to_cpu(smb->CountHigh); | |
1726 | written <<= 16; | |
1727 | written += le16_to_cpu(smb->Count); | |
1728 | /* | |
1729 | * Mask off high 16 bits when bytes written as returned | |
1730 | * by the server is greater than bytes requested by the | |
1731 | * client. OS/2 servers are known to set incorrect | |
1732 | * CountHigh values. | |
1733 | */ | |
1734 | if (written > wdata->bytes) | |
1735 | written &= 0xFFFF; | |
1736 | ||
1737 | if (written < wdata->bytes) | |
1738 | wdata->result = -ENOSPC; | |
1739 | else | |
1740 | wdata->bytes = written; | |
1741 | break; | |
1742 | case MID_REQUEST_SUBMITTED: | |
1743 | case MID_RETRY_NEEDED: | |
1744 | wdata->result = -EAGAIN; | |
1745 | break; | |
1746 | default: | |
1747 | wdata->result = -EIO; | |
1748 | break; | |
1749 | } | |
1750 | ||
1751 | queue_work(system_nrt_wq, &wdata->work); | |
1752 | DeleteMidQEntry(mid); | |
1753 | atomic_dec(&tcon->ses->server->inFlight); | |
1754 | wake_up(&tcon->ses->server->request_q); | |
1755 | } | |
1756 | ||
1757 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
1758 | int | |
1759 | cifs_async_writev(struct cifs_writedata *wdata) | |
1760 | { | |
1761 | int i, rc = -EACCES; | |
1762 | WRITE_REQ *smb = NULL; | |
1763 | int wct; | |
1764 | struct cifsTconInfo *tcon = tlink_tcon(wdata->cfile->tlink); | |
1765 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1766 | struct kvec *iov = NULL; | |
1767 | ||
1768 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
1769 | wct = 14; | |
1770 | } else { | |
1771 | wct = 12; | |
1772 | if (wdata->offset >> 32 > 0) { | |
1773 | /* can not handle big offset for old srv */ | |
1774 | return -EIO; | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
1779 | if (rc) | |
1780 | goto async_writev_out; | |
1781 | ||
1782 | /* 1 iov per page + 1 for header */ | |
1783 | iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS); | |
1784 | if (iov == NULL) { | |
1785 | rc = -ENOMEM; | |
1786 | goto async_writev_out; | |
1787 | } | |
1788 | ||
fa2989f4 PS |
1789 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->cfile->pid); |
1790 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->cfile->pid >> 16)); | |
1791 | ||
c28c89fc JL |
1792 | smb->AndXCommand = 0xFF; /* none */ |
1793 | smb->Fid = wdata->cfile->netfid; | |
1794 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); | |
1795 | if (wct == 14) | |
1796 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
1797 | smb->Reserved = 0xFFFFFFFF; | |
1798 | smb->WriteMode = 0; | |
1799 | smb->Remaining = 0; | |
1800 | ||
1801 | smb->DataOffset = | |
1802 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1803 | ||
1804 | /* 4 for RFC1001 length + 1 for BCC */ | |
1805 | iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; | |
1806 | iov[0].iov_base = smb; | |
1807 | ||
1808 | /* marshal up the pages into iov array */ | |
1809 | wdata->bytes = 0; | |
1810 | for (i = 0; i < wdata->nr_pages; i++) { | |
1811 | iov[i + 1].iov_len = min(inode->i_size - | |
1812 | page_offset(wdata->pages[i]), | |
1813 | (loff_t)PAGE_CACHE_SIZE); | |
1814 | iov[i + 1].iov_base = kmap(wdata->pages[i]); | |
1815 | wdata->bytes += iov[i + 1].iov_len; | |
1816 | } | |
1817 | ||
1818 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
1819 | ||
1820 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
1821 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
1822 | ||
1823 | if (wct == 14) { | |
1824 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
1825 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
1826 | } else { | |
1827 | /* wct == 12 */ | |
1828 | struct smb_com_writex_req *smbw = | |
1829 | (struct smb_com_writex_req *)smb; | |
1830 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
1831 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
1832 | iov[0].iov_len += 4; /* pad bigger by four bytes */ | |
1833 | } | |
1834 | ||
1835 | kref_get(&wdata->refcount); | |
1836 | rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1, | |
1837 | cifs_writev_callback, wdata, false); | |
1838 | ||
1839 | if (rc == 0) | |
1840 | cifs_stats_inc(&tcon->num_writes); | |
1841 | else | |
1842 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1843 | ||
1844 | /* send is done, unmap pages */ | |
1845 | for (i = 0; i < wdata->nr_pages; i++) | |
1846 | kunmap(wdata->pages[i]); | |
1847 | ||
1848 | async_writev_out: | |
1849 | cifs_small_buf_release(smb); | |
1850 | kfree(iov); | |
1851 | return rc; | |
1852 | } | |
1853 | ||
d6e04ae6 | 1854 | int |
fa2989f4 PS |
1855 | CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, |
1856 | unsigned int *nbytes, struct kvec *iov, int n_vec, | |
1857 | const int long_op) | |
1da177e4 LT |
1858 | { |
1859 | int rc = -EACCES; | |
1860 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1861 | int wct; |
d6e04ae6 | 1862 | int smb_hdr_len; |
ec637e3f | 1863 | int resp_buf_type = 0; |
fa2989f4 PS |
1864 | __u32 pid = io_parms->pid; |
1865 | __u16 netfid = io_parms->netfid; | |
1866 | __u64 offset = io_parms->offset; | |
1867 | struct cifsTconInfo *tcon = io_parms->tcon; | |
1868 | unsigned int count = io_parms->length; | |
1da177e4 | 1869 | |
fbec9ab9 JL |
1870 | *nbytes = 0; |
1871 | ||
b6b38f70 | 1872 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 1873 | |
4c3130ef | 1874 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1875 | wct = 14; |
4c3130ef | 1876 | } else { |
8cc64c6e | 1877 | wct = 12; |
4c3130ef SF |
1878 | if ((offset >> 32) > 0) { |
1879 | /* can not handle big offset for old srv */ | |
1880 | return -EIO; | |
1881 | } | |
1882 | } | |
8cc64c6e | 1883 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1884 | if (rc) |
1885 | return rc; | |
fa2989f4 PS |
1886 | |
1887 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1888 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1889 | ||
1da177e4 LT |
1890 | /* tcon and ses pointer are checked in smb_init */ |
1891 | if (tcon->ses->server == NULL) | |
1892 | return -ECONNABORTED; | |
1893 | ||
d6e04ae6 | 1894 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1895 | pSMB->Fid = netfid; |
1896 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1897 | if (wct == 14) |
8cc64c6e | 1898 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1899 | pSMB->Reserved = 0xFFFFFFFF; |
1900 | pSMB->WriteMode = 0; | |
1901 | pSMB->Remaining = 0; | |
d6e04ae6 | 1902 | |
1da177e4 | 1903 | pSMB->DataOffset = |
50c2f753 | 1904 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1905 | |
3e84469d SF |
1906 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1907 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1908 | /* header + 1 byte pad */ |
1909 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1910 | if (wct == 14) |
be8e3b00 | 1911 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1912 | else /* wct == 12 */ |
be8e3b00 | 1913 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1914 | if (wct == 14) |
8cc64c6e SF |
1915 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1916 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1917 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1918 | (struct smb_com_writex_req *)pSMB; |
1919 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1920 | } | |
3e84469d | 1921 | iov[0].iov_base = pSMB; |
790fe579 | 1922 | if (wct == 14) |
ec637e3f SF |
1923 | iov[0].iov_len = smb_hdr_len + 4; |
1924 | else /* wct == 12 pad bigger by four bytes */ | |
1925 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1926 | |
1da177e4 | 1927 | |
ec637e3f | 1928 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1929 | long_op); |
a4544347 | 1930 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1931 | if (rc) { |
b6b38f70 | 1932 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 1933 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1934 | /* presumably this can not happen, but best to be safe */ |
1935 | rc = -EIO; | |
d6e04ae6 | 1936 | } else { |
ad7a2926 | 1937 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1938 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1939 | *nbytes = (*nbytes) << 16; | |
1940 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1941 | |
1942 | /* | |
1943 | * Mask off high 16 bits when bytes written as returned by the | |
1944 | * server is greater than bytes requested by the client. OS/2 | |
1945 | * servers are known to set incorrect CountHigh values. | |
1946 | */ | |
1947 | if (*nbytes > count) | |
1948 | *nbytes &= 0xFFFF; | |
50c2f753 | 1949 | } |
1da177e4 | 1950 | |
4b8f930f | 1951 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1952 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1953 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1954 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1955 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1956 | |
50c2f753 | 1957 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1958 | since file handle passed in no longer valid */ |
1959 | ||
1960 | return rc; | |
1961 | } | |
d6e04ae6 SF |
1962 | |
1963 | ||
1da177e4 LT |
1964 | int |
1965 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1966 | const __u16 smb_file_id, const __u64 len, | |
1967 | const __u64 offset, const __u32 numUnlock, | |
12fed00d PS |
1968 | const __u32 numLock, const __u8 lockType, |
1969 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1970 | { |
1971 | int rc = 0; | |
1972 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1973 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1974 | int bytes_returned; |
1975 | int timeout = 0; | |
1976 | __u16 count; | |
1977 | ||
b6b38f70 | 1978 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
1979 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1980 | ||
1da177e4 LT |
1981 | if (rc) |
1982 | return rc; | |
1983 | ||
790fe579 | 1984 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1985 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1986 | pSMB->Timeout = 0; |
4b18f2a9 | 1987 | } else if (waitFlag) { |
133672ef | 1988 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1989 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1990 | } else { | |
1991 | pSMB->Timeout = 0; | |
1992 | } | |
1993 | ||
1994 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1995 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1996 | pSMB->LockType = lockType; | |
12fed00d | 1997 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1998 | pSMB->AndXCommand = 0xFF; /* none */ |
1999 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2000 | ||
790fe579 | 2001 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
2002 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
2003 | /* BB where to store pid high? */ | |
2004 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2005 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2006 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2007 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2008 | count = sizeof(LOCKING_ANDX_RANGE); | |
2009 | } else { | |
2010 | /* oplock break */ | |
2011 | count = 0; | |
2012 | } | |
be8e3b00 | 2013 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2014 | pSMB->ByteCount = cpu_to_le16(count); |
2015 | ||
7ee1af76 JA |
2016 | if (waitFlag) { |
2017 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2018 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2019 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2020 | } else { |
133672ef SF |
2021 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
2022 | timeout); | |
2023 | /* SMB buffer freed by function above */ | |
7ee1af76 | 2024 | } |
a4544347 | 2025 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 2026 | if (rc) |
b6b38f70 | 2027 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2028 | |
50c2f753 | 2029 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2030 | since file handle passed in no longer valid */ |
2031 | return rc; | |
2032 | } | |
2033 | ||
08547b03 SF |
2034 | int |
2035 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
2036 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 2037 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 2038 | const bool waitFlag) |
08547b03 SF |
2039 | { |
2040 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2041 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2042 | struct cifs_posix_lock *parm_data; |
2043 | int rc = 0; | |
3a5ff61c | 2044 | int timeout = 0; |
08547b03 | 2045 | int bytes_returned = 0; |
133672ef | 2046 | int resp_buf_type = 0; |
08547b03 | 2047 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2048 | struct kvec iov[1]; |
08547b03 | 2049 | |
b6b38f70 | 2050 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2051 | |
790fe579 | 2052 | if (pLockData == NULL) |
ed5f0370 | 2053 | return -EINVAL; |
fc94cdb9 | 2054 | |
08547b03 SF |
2055 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2056 | ||
2057 | if (rc) | |
2058 | return rc; | |
2059 | ||
2060 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2061 | ||
50c2f753 | 2062 | params = 6; |
08547b03 SF |
2063 | pSMB->MaxSetupCount = 0; |
2064 | pSMB->Reserved = 0; | |
2065 | pSMB->Flags = 0; | |
08547b03 SF |
2066 | pSMB->Reserved2 = 0; |
2067 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2068 | offset = param_offset + params; | |
2069 | ||
08547b03 SF |
2070 | count = sizeof(struct cifs_posix_lock); |
2071 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2072 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2073 | pSMB->SetupCount = 1; |
2074 | pSMB->Reserved3 = 0; | |
790fe579 | 2075 | if (get_flag) |
08547b03 SF |
2076 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2077 | else | |
2078 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2079 | byte_count = 3 /* pad */ + params + count; | |
2080 | pSMB->DataCount = cpu_to_le16(count); | |
2081 | pSMB->ParameterCount = cpu_to_le16(params); | |
2082 | pSMB->TotalDataCount = pSMB->DataCount; | |
2083 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2084 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2085 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2086 | (((char *) &pSMB->hdr.Protocol) + offset); |
2087 | ||
2088 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2089 | if (waitFlag) { |
133672ef | 2090 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2091 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2092 | pSMB->Timeout = cpu_to_le32(-1); |
2093 | } else | |
2094 | pSMB->Timeout = 0; | |
2095 | ||
08547b03 | 2096 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 2097 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 2098 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2099 | |
2100 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2101 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2102 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2103 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2104 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2105 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2106 | if (waitFlag) { |
2107 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2108 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2109 | } else { | |
133672ef | 2110 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2111 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2112 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2113 | &resp_buf_type, timeout); | |
2114 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2115 | not try to free it twice below on exit */ | |
2116 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2117 | } |
2118 | ||
08547b03 | 2119 | if (rc) { |
b6b38f70 | 2120 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
2121 | } else if (get_flag) { |
2122 | /* lock structure can be returned on get */ | |
2123 | __u16 data_offset; | |
2124 | __u16 data_count; | |
2125 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2126 | ||
820a803f | 2127 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2128 | rc = -EIO; /* bad smb */ |
2129 | goto plk_err_exit; | |
2130 | } | |
fc94cdb9 SF |
2131 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2132 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2133 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2134 | rc = -EIO; |
2135 | goto plk_err_exit; | |
2136 | } | |
2137 | parm_data = (struct cifs_posix_lock *) | |
2138 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2139 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2140 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2141 | else { |
2142 | if (parm_data->lock_type == | |
2143 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2144 | pLockData->fl_type = F_RDLCK; | |
2145 | else if (parm_data->lock_type == | |
2146 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2147 | pLockData->fl_type = F_WRLCK; | |
2148 | ||
5443d130 SF |
2149 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2150 | pLockData->fl_end = pLockData->fl_start + | |
2151 | le64_to_cpu(parm_data->length) - 1; | |
2152 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2153 | } |
08547b03 | 2154 | } |
50c2f753 | 2155 | |
fc94cdb9 | 2156 | plk_err_exit: |
08547b03 SF |
2157 | if (pSMB) |
2158 | cifs_small_buf_release(pSMB); | |
2159 | ||
133672ef SF |
2160 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2161 | cifs_small_buf_release(iov[0].iov_base); | |
2162 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2163 | cifs_buf_release(iov[0].iov_base); | |
2164 | ||
08547b03 SF |
2165 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2166 | since file handle passed in no longer valid */ | |
2167 | ||
2168 | return rc; | |
2169 | } | |
2170 | ||
2171 | ||
1da177e4 LT |
2172 | int |
2173 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
2174 | { | |
2175 | int rc = 0; | |
2176 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2177 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2178 | |
2179 | /* do not retry on dead session on close */ | |
2180 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2181 | if (rc == -EAGAIN) |
1da177e4 LT |
2182 | return 0; |
2183 | if (rc) | |
2184 | return rc; | |
2185 | ||
1da177e4 | 2186 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2187 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2188 | pSMB->ByteCount = 0; |
133672ef | 2189 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 2190 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 2191 | if (rc) { |
790fe579 | 2192 | if (rc != -EINTR) { |
1da177e4 | 2193 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2194 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2195 | } |
2196 | } | |
2197 | ||
1da177e4 | 2198 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2199 | if (rc == -EAGAIN) |
1da177e4 LT |
2200 | rc = 0; |
2201 | ||
2202 | return rc; | |
2203 | } | |
2204 | ||
b298f223 SF |
2205 | int |
2206 | CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
2207 | { | |
2208 | int rc = 0; | |
2209 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2210 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2211 | |
2212 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2213 | if (rc) | |
2214 | return rc; | |
2215 | ||
2216 | pSMB->FileID = (__u16) smb_file_id; | |
2217 | pSMB->ByteCount = 0; | |
2218 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
2219 | cifs_stats_inc(&tcon->num_flushes); | |
2220 | if (rc) | |
b6b38f70 | 2221 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2222 | |
2223 | return rc; | |
2224 | } | |
2225 | ||
1da177e4 LT |
2226 | int |
2227 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
2228 | const char *fromName, const char *toName, | |
737b758c | 2229 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2230 | { |
2231 | int rc = 0; | |
2232 | RENAME_REQ *pSMB = NULL; | |
2233 | RENAME_RSP *pSMBr = NULL; | |
2234 | int bytes_returned; | |
2235 | int name_len, name_len2; | |
2236 | __u16 count; | |
2237 | ||
b6b38f70 | 2238 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2239 | renameRetry: |
2240 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2241 | (void **) &pSMBr); | |
2242 | if (rc) | |
2243 | return rc; | |
2244 | ||
2245 | pSMB->BufferFormat = 0x04; | |
2246 | pSMB->SearchAttributes = | |
2247 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2248 | ATTR_DIRECTORY); | |
2249 | ||
2250 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2251 | name_len = | |
50c2f753 | 2252 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2253 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2254 | name_len++; /* trailing null */ |
2255 | name_len *= 2; | |
2256 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2257 | /* protocol requires ASCII signature byte on Unicode string */ | |
2258 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2259 | name_len2 = | |
582d21e5 | 2260 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2261 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2262 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2263 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2264 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2265 | name_len = strnlen(fromName, PATH_MAX); |
2266 | name_len++; /* trailing null */ | |
2267 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2268 | name_len2 = strnlen(toName, PATH_MAX); | |
2269 | name_len2++; /* trailing null */ | |
2270 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2271 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2272 | name_len2++; /* trailing null */ | |
2273 | name_len2++; /* signature byte */ | |
2274 | } | |
2275 | ||
2276 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2277 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2278 | pSMB->ByteCount = cpu_to_le16(count); |
2279 | ||
2280 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2281 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2282 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2283 | if (rc) |
b6b38f70 | 2284 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2285 | |
1da177e4 LT |
2286 | cifs_buf_release(pSMB); |
2287 | ||
2288 | if (rc == -EAGAIN) | |
2289 | goto renameRetry; | |
2290 | ||
2291 | return rc; | |
2292 | } | |
2293 | ||
50c2f753 | 2294 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 2295 | int netfid, const char *target_name, |
50c2f753 | 2296 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2297 | { |
2298 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2299 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2300 | struct set_file_rename *rename_info; |
1da177e4 LT |
2301 | char *data_offset; |
2302 | char dummy_string[30]; | |
2303 | int rc = 0; | |
2304 | int bytes_returned = 0; | |
2305 | int len_of_str; | |
2306 | __u16 params, param_offset, offset, count, byte_count; | |
2307 | ||
b6b38f70 | 2308 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2309 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2310 | (void **) &pSMBr); | |
2311 | if (rc) | |
2312 | return rc; | |
2313 | ||
2314 | params = 6; | |
2315 | pSMB->MaxSetupCount = 0; | |
2316 | pSMB->Reserved = 0; | |
2317 | pSMB->Flags = 0; | |
2318 | pSMB->Timeout = 0; | |
2319 | pSMB->Reserved2 = 0; | |
2320 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2321 | offset = param_offset + params; | |
2322 | ||
2323 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2324 | rename_info = (struct set_file_rename *) data_offset; | |
2325 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2326 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2327 | pSMB->SetupCount = 1; |
2328 | pSMB->Reserved3 = 0; | |
2329 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2330 | byte_count = 3 /* pad */ + params; | |
2331 | pSMB->ParameterCount = cpu_to_le16(params); | |
2332 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2333 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2334 | pSMB->DataOffset = cpu_to_le16(offset); | |
2335 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2336 | rename_info->overwrite = cpu_to_le32(1); | |
2337 | rename_info->root_fid = 0; | |
2338 | /* unicode only call */ | |
790fe579 | 2339 | if (target_name == NULL) { |
50c2f753 SF |
2340 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2341 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2342 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2343 | } else { |
b1a45695 | 2344 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2345 | target_name, PATH_MAX, nls_codepage, |
2346 | remap); | |
1da177e4 LT |
2347 | } |
2348 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2349 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2350 | byte_count += count; |
2351 | pSMB->DataCount = cpu_to_le16(count); | |
2352 | pSMB->TotalDataCount = pSMB->DataCount; | |
2353 | pSMB->Fid = netfid; | |
2354 | pSMB->InformationLevel = | |
2355 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2356 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2357 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2358 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2359 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2360 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2361 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2362 | if (rc) |
b6b38f70 | 2363 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2364 | |
1da177e4 LT |
2365 | cifs_buf_release(pSMB); |
2366 | ||
2367 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2368 | since file handle passed in no longer valid */ | |
2369 | ||
2370 | return rc; | |
2371 | } | |
2372 | ||
2373 | int | |
50c2f753 SF |
2374 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2375 | const __u16 target_tid, const char *toName, const int flags, | |
2376 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2377 | { |
2378 | int rc = 0; | |
2379 | COPY_REQ *pSMB = NULL; | |
2380 | COPY_RSP *pSMBr = NULL; | |
2381 | int bytes_returned; | |
2382 | int name_len, name_len2; | |
2383 | __u16 count; | |
2384 | ||
b6b38f70 | 2385 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2386 | copyRetry: |
2387 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2388 | (void **) &pSMBr); | |
2389 | if (rc) | |
2390 | return rc; | |
2391 | ||
2392 | pSMB->BufferFormat = 0x04; | |
2393 | pSMB->Tid2 = target_tid; | |
2394 | ||
2395 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2396 | ||
2397 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2398 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2399 | fromName, PATH_MAX, nls_codepage, |
2400 | remap); | |
1da177e4 LT |
2401 | name_len++; /* trailing null */ |
2402 | name_len *= 2; | |
2403 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2404 | /* protocol requires ASCII signature byte on Unicode string */ | |
2405 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2406 | name_len2 = |
2407 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2408 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2409 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2410 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2411 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2412 | name_len = strnlen(fromName, PATH_MAX); |
2413 | name_len++; /* trailing null */ | |
2414 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2415 | name_len2 = strnlen(toName, PATH_MAX); | |
2416 | name_len2++; /* trailing null */ | |
2417 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2418 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2419 | name_len2++; /* trailing null */ | |
2420 | name_len2++; /* signature byte */ | |
2421 | } | |
2422 | ||
2423 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2424 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2425 | pSMB->ByteCount = cpu_to_le16(count); |
2426 | ||
2427 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2428 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2429 | if (rc) { | |
b6b38f70 JP |
2430 | cFYI(1, "Send error in copy = %d with %d files copied", |
2431 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2432 | } |
0d817bc0 | 2433 | cifs_buf_release(pSMB); |
1da177e4 LT |
2434 | |
2435 | if (rc == -EAGAIN) | |
2436 | goto copyRetry; | |
2437 | ||
2438 | return rc; | |
2439 | } | |
2440 | ||
2441 | int | |
2442 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2443 | const char *fromName, const char *toName, | |
2444 | const struct nls_table *nls_codepage) | |
2445 | { | |
2446 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2447 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2448 | char *data_offset; | |
2449 | int name_len; | |
2450 | int name_len_target; | |
2451 | int rc = 0; | |
2452 | int bytes_returned = 0; | |
2453 | __u16 params, param_offset, offset, byte_count; | |
2454 | ||
b6b38f70 | 2455 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2456 | createSymLinkRetry: |
2457 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2458 | (void **) &pSMBr); | |
2459 | if (rc) | |
2460 | return rc; | |
2461 | ||
2462 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2463 | name_len = | |
e89dc920 | 2464 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2465 | /* find define for this maxpathcomponent */ |
2466 | , nls_codepage); | |
2467 | name_len++; /* trailing null */ | |
2468 | name_len *= 2; | |
2469 | ||
50c2f753 | 2470 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2471 | name_len = strnlen(fromName, PATH_MAX); |
2472 | name_len++; /* trailing null */ | |
2473 | strncpy(pSMB->FileName, fromName, name_len); | |
2474 | } | |
2475 | params = 6 + name_len; | |
2476 | pSMB->MaxSetupCount = 0; | |
2477 | pSMB->Reserved = 0; | |
2478 | pSMB->Flags = 0; | |
2479 | pSMB->Timeout = 0; | |
2480 | pSMB->Reserved2 = 0; | |
2481 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2482 | InformationLevel) - 4; |
1da177e4 LT |
2483 | offset = param_offset + params; |
2484 | ||
2485 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2486 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2487 | name_len_target = | |
e89dc920 | 2488 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2489 | /* find define for this maxpathcomponent */ |
2490 | , nls_codepage); | |
2491 | name_len_target++; /* trailing null */ | |
2492 | name_len_target *= 2; | |
50c2f753 | 2493 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2494 | name_len_target = strnlen(toName, PATH_MAX); |
2495 | name_len_target++; /* trailing null */ | |
2496 | strncpy(data_offset, toName, name_len_target); | |
2497 | } | |
2498 | ||
2499 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2500 | /* BB find exact max on data count below from sess */ | |
2501 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2502 | pSMB->SetupCount = 1; | |
2503 | pSMB->Reserved3 = 0; | |
2504 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2505 | byte_count = 3 /* pad */ + params + name_len_target; | |
2506 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2507 | pSMB->ParameterCount = cpu_to_le16(params); | |
2508 | pSMB->TotalDataCount = pSMB->DataCount; | |
2509 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2510 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2511 | pSMB->DataOffset = cpu_to_le16(offset); | |
2512 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2513 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2514 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2515 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2516 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2517 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2518 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2519 | if (rc) |
b6b38f70 | 2520 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2521 | |
0d817bc0 | 2522 | cifs_buf_release(pSMB); |
1da177e4 LT |
2523 | |
2524 | if (rc == -EAGAIN) | |
2525 | goto createSymLinkRetry; | |
2526 | ||
2527 | return rc; | |
2528 | } | |
2529 | ||
2530 | int | |
2531 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2532 | const char *fromName, const char *toName, | |
737b758c | 2533 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2534 | { |
2535 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2536 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2537 | char *data_offset; | |
2538 | int name_len; | |
2539 | int name_len_target; | |
2540 | int rc = 0; | |
2541 | int bytes_returned = 0; | |
2542 | __u16 params, param_offset, offset, byte_count; | |
2543 | ||
b6b38f70 | 2544 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2545 | createHardLinkRetry: |
2546 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2547 | (void **) &pSMBr); | |
2548 | if (rc) | |
2549 | return rc; | |
2550 | ||
2551 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2552 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2553 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2554 | name_len++; /* trailing null */ |
2555 | name_len *= 2; | |
2556 | ||
50c2f753 | 2557 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2558 | name_len = strnlen(toName, PATH_MAX); |
2559 | name_len++; /* trailing null */ | |
2560 | strncpy(pSMB->FileName, toName, name_len); | |
2561 | } | |
2562 | params = 6 + name_len; | |
2563 | pSMB->MaxSetupCount = 0; | |
2564 | pSMB->Reserved = 0; | |
2565 | pSMB->Flags = 0; | |
2566 | pSMB->Timeout = 0; | |
2567 | pSMB->Reserved2 = 0; | |
2568 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2569 | InformationLevel) - 4; |
1da177e4 LT |
2570 | offset = param_offset + params; |
2571 | ||
2572 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2573 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2574 | name_len_target = | |
b1a45695 | 2575 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2576 | nls_codepage, remap); |
1da177e4 LT |
2577 | name_len_target++; /* trailing null */ |
2578 | name_len_target *= 2; | |
50c2f753 | 2579 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2580 | name_len_target = strnlen(fromName, PATH_MAX); |
2581 | name_len_target++; /* trailing null */ | |
2582 | strncpy(data_offset, fromName, name_len_target); | |
2583 | } | |
2584 | ||
2585 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2586 | /* BB find exact max on data count below from sess*/ | |
2587 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2588 | pSMB->SetupCount = 1; | |
2589 | pSMB->Reserved3 = 0; | |
2590 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2591 | byte_count = 3 /* pad */ + params + name_len_target; | |
2592 | pSMB->ParameterCount = cpu_to_le16(params); | |
2593 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2594 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2595 | pSMB->TotalDataCount = pSMB->DataCount; | |
2596 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2597 | pSMB->DataOffset = cpu_to_le16(offset); | |
2598 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2599 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2600 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2601 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2602 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2603 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2604 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2605 | if (rc) |
b6b38f70 | 2606 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2607 | |
2608 | cifs_buf_release(pSMB); | |
2609 | if (rc == -EAGAIN) | |
2610 | goto createHardLinkRetry; | |
2611 | ||
2612 | return rc; | |
2613 | } | |
2614 | ||
2615 | int | |
2616 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2617 | const char *fromName, const char *toName, | |
737b758c | 2618 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2619 | { |
2620 | int rc = 0; | |
2621 | NT_RENAME_REQ *pSMB = NULL; | |
2622 | RENAME_RSP *pSMBr = NULL; | |
2623 | int bytes_returned; | |
2624 | int name_len, name_len2; | |
2625 | __u16 count; | |
2626 | ||
b6b38f70 | 2627 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2628 | winCreateHardLinkRetry: |
2629 | ||
2630 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2631 | (void **) &pSMBr); | |
2632 | if (rc) | |
2633 | return rc; | |
2634 | ||
2635 | pSMB->SearchAttributes = | |
2636 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2637 | ATTR_DIRECTORY); | |
2638 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2639 | pSMB->ClusterCount = 0; | |
2640 | ||
2641 | pSMB->BufferFormat = 0x04; | |
2642 | ||
2643 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2644 | name_len = | |
b1a45695 | 2645 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2646 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2647 | name_len++; /* trailing null */ |
2648 | name_len *= 2; | |
fcc7c09d JL |
2649 | |
2650 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2651 | pSMB->OldFileName[name_len] = 0x04; | |
2652 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2653 | name_len2 = |
50c2f753 | 2654 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2655 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2656 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2657 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2658 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2659 | name_len = strnlen(fromName, PATH_MAX); |
2660 | name_len++; /* trailing null */ | |
2661 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2662 | name_len2 = strnlen(toName, PATH_MAX); | |
2663 | name_len2++; /* trailing null */ | |
2664 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2665 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2666 | name_len2++; /* trailing null */ | |
2667 | name_len2++; /* signature byte */ | |
2668 | } | |
2669 | ||
2670 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2671 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2672 | pSMB->ByteCount = cpu_to_le16(count); |
2673 | ||
2674 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2675 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2676 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2677 | if (rc) |
b6b38f70 | 2678 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2679 | |
1da177e4 LT |
2680 | cifs_buf_release(pSMB); |
2681 | if (rc == -EAGAIN) | |
2682 | goto winCreateHardLinkRetry; | |
2683 | ||
2684 | return rc; | |
2685 | } | |
2686 | ||
2687 | int | |
2688 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
460b9696 | 2689 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2690 | const struct nls_table *nls_codepage) |
2691 | { | |
2692 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2693 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2694 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2695 | int rc = 0; | |
2696 | int bytes_returned; | |
2697 | int name_len; | |
2698 | __u16 params, byte_count; | |
460b9696 | 2699 | char *data_start; |
1da177e4 | 2700 | |
b6b38f70 | 2701 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2702 | |
2703 | querySymLinkRetry: | |
2704 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2705 | (void **) &pSMBr); | |
2706 | if (rc) | |
2707 | return rc; | |
2708 | ||
2709 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2710 | name_len = | |
50c2f753 SF |
2711 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2712 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2713 | name_len++; /* trailing null */ |
2714 | name_len *= 2; | |
50c2f753 | 2715 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2716 | name_len = strnlen(searchName, PATH_MAX); |
2717 | name_len++; /* trailing null */ | |
2718 | strncpy(pSMB->FileName, searchName, name_len); | |
2719 | } | |
2720 | ||
2721 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2722 | pSMB->TotalDataCount = 0; | |
2723 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2724 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2725 | pSMB->MaxSetupCount = 0; |
2726 | pSMB->Reserved = 0; | |
2727 | pSMB->Flags = 0; | |
2728 | pSMB->Timeout = 0; | |
2729 | pSMB->Reserved2 = 0; | |
2730 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2731 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2732 | pSMB->DataCount = 0; |
2733 | pSMB->DataOffset = 0; | |
2734 | pSMB->SetupCount = 1; | |
2735 | pSMB->Reserved3 = 0; | |
2736 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2737 | byte_count = params + 1 /* pad */ ; | |
2738 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2739 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2740 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2741 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2742 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2743 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2744 | ||
2745 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2746 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2747 | if (rc) { | |
b6b38f70 | 2748 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
2749 | } else { |
2750 | /* decode response */ | |
2751 | ||
2752 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2753 | /* BB also check enough total bytes returned */ |
820a803f | 2754 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2755 | rc = -EIO; |
1da177e4 | 2756 | else { |
0e0d2cf3 | 2757 | bool is_unicode; |
460b9696 JL |
2758 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2759 | ||
2760 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2761 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2762 | |
0e0d2cf3 SF |
2763 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2764 | is_unicode = true; | |
2765 | else | |
2766 | is_unicode = false; | |
2767 | ||
737b758c | 2768 | /* BB FIXME investigate remapping reserved chars here */ |
d185cda7 | 2769 | *symlinkinfo = cifs_strndup_from_ucs(data_start, count, |
0e0d2cf3 | 2770 | is_unicode, nls_codepage); |
8b6427a2 | 2771 | if (!*symlinkinfo) |
460b9696 | 2772 | rc = -ENOMEM; |
1da177e4 LT |
2773 | } |
2774 | } | |
2775 | cifs_buf_release(pSMB); | |
2776 | if (rc == -EAGAIN) | |
2777 | goto querySymLinkRetry; | |
2778 | return rc; | |
2779 | } | |
2780 | ||
c52a9554 SF |
2781 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
2782 | /* | |
2783 | * Recent Windows versions now create symlinks more frequently | |
2784 | * and they use the "reparse point" mechanism below. We can of course | |
2785 | * do symlinks nicely to Samba and other servers which support the | |
2786 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2787 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2788 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2789 | * In the interim this code has been moved to its own config option so | |
2790 | * it is not compiled in by default until callers fixed up and more tested. | |
2791 | */ | |
1da177e4 LT |
2792 | int |
2793 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2794 | const unsigned char *searchName, | |
50c2f753 | 2795 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2796 | const struct nls_table *nls_codepage) |
2797 | { | |
2798 | int rc = 0; | |
2799 | int bytes_returned; | |
50c2f753 SF |
2800 | struct smb_com_transaction_ioctl_req *pSMB; |
2801 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 2802 | |
b6b38f70 | 2803 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
2804 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2805 | (void **) &pSMBr); | |
2806 | if (rc) | |
2807 | return rc; | |
2808 | ||
2809 | pSMB->TotalParameterCount = 0 ; | |
2810 | pSMB->TotalDataCount = 0; | |
2811 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2812 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2813 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2814 | MAX_CIFS_HDR_SIZE) & 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 | |
3031 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *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 | |
3119 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *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 | |
3199 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *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, | |
3292 | const int parm_len, struct cifsTconInfo *tcon, | |
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; | |
3307 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
3308 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3309 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3310 | pSMB->DataCount = pSMB->TotalDataCount; | |
3311 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3312 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3313 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3314 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3315 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3316 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3317 | return 0; | |
3318 | } | |
3319 | ||
3320 | static int | |
3321 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3322 | __u32 *pparmlen, __u32 *pdatalen) | |
3323 | { | |
3324 | char *end_of_smb; | |
3325 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3326 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3327 | u16 bcc; |
79df1bae JL |
3328 | |
3329 | *pdatalen = 0; | |
3330 | *pparmlen = 0; | |
3331 | ||
3332 | if (buf == NULL) | |
3333 | return -EINVAL; | |
3334 | ||
3335 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3336 | ||
820a803f JL |
3337 | bcc = get_bcc(&pSMBr->hdr); |
3338 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3339 | (char *)&pSMBr->ByteCount; |
3340 | ||
3341 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3342 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3343 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3344 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3345 | ||
3346 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3347 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3348 | ||
3349 | /* should we also check that parm and data areas do not overlap? */ | |
3350 | if (*ppparm > end_of_smb) { | |
3351 | cFYI(1, "parms start after end of smb"); | |
3352 | return -EINVAL; | |
3353 | } else if (parm_count + *ppparm > end_of_smb) { | |
3354 | cFYI(1, "parm end after end of smb"); | |
3355 | return -EINVAL; | |
3356 | } else if (*ppdata > end_of_smb) { | |
3357 | cFYI(1, "data starts after end of smb"); | |
3358 | return -EINVAL; | |
3359 | } else if (data_count + *ppdata > end_of_smb) { | |
3360 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3361 | *ppdata, data_count, (data_count + *ppdata), | |
3362 | end_of_smb, pSMBr); | |
3363 | return -EINVAL; | |
820a803f | 3364 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3365 | cFYI(1, "parm count and data count larger than SMB"); |
3366 | return -EINVAL; | |
3367 | } | |
3368 | *pdatalen = data_count; | |
3369 | *pparmlen = parm_count; | |
3370 | return 0; | |
3371 | } | |
3372 | ||
0a4b92c0 SF |
3373 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3374 | int | |
3375 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3376 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3377 | { |
3378 | int rc = 0; | |
3379 | int buf_type = 0; | |
ad7a2926 | 3380 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3381 | struct kvec iov[1]; |
3382 | ||
b6b38f70 | 3383 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3384 | |
630f3f0c SF |
3385 | *pbuflen = 0; |
3386 | *acl_inf = NULL; | |
3387 | ||
b9c7a2bb | 3388 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3389 | 8 /* parm len */, tcon, (void **) &pSMB); |
3390 | if (rc) | |
3391 | return rc; | |
3392 | ||
3393 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3394 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3395 | pSMB->MaxSetupCount = 0; | |
3396 | pSMB->Fid = fid; /* file handle always le */ | |
3397 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3398 | CIFS_ACL_DACL); | |
3399 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3400 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3401 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3402 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3403 | |
a761ac57 | 3404 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3405 | 0); |
0a4b92c0 SF |
3406 | cifs_stats_inc(&tcon->num_acl_get); |
3407 | if (rc) { | |
b6b38f70 | 3408 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3409 | } else { /* decode response */ |
ad7a2926 | 3410 | __le32 *parm; |
630f3f0c SF |
3411 | __u32 parm_len; |
3412 | __u32 acl_len; | |
50c2f753 | 3413 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3414 | char *pdata; |
0a4b92c0 SF |
3415 | |
3416 | /* validate_nttransact */ | |
50c2f753 | 3417 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3418 | &pdata, &parm_len, pbuflen); |
790fe579 | 3419 | if (rc) |
0a4b92c0 SF |
3420 | goto qsec_out; |
3421 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3422 | ||
b6b38f70 | 3423 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3424 | |
3425 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3426 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3427 | *pbuflen = 0; |
0a4b92c0 SF |
3428 | goto qsec_out; |
3429 | } | |
3430 | ||
3431 | /* BB check that data area is minimum length and as big as acl_len */ | |
3432 | ||
af6f4612 | 3433 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3434 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3435 | cERROR(1, "acl length %d does not match %d", |
3436 | acl_len, *pbuflen); | |
630f3f0c SF |
3437 | if (*pbuflen > acl_len) |
3438 | *pbuflen = acl_len; | |
3439 | } | |
0a4b92c0 | 3440 | |
630f3f0c SF |
3441 | /* check if buffer is big enough for the acl |
3442 | header followed by the smallest SID */ | |
3443 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3444 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3445 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3446 | rc = -EINVAL; |
3447 | *pbuflen = 0; | |
3448 | } else { | |
3449 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3450 | if (*acl_inf == NULL) { | |
3451 | *pbuflen = 0; | |
3452 | rc = -ENOMEM; | |
3453 | } | |
3454 | memcpy(*acl_inf, pdata, *pbuflen); | |
3455 | } | |
0a4b92c0 SF |
3456 | } |
3457 | qsec_out: | |
790fe579 | 3458 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3459 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3460 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3461 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3462 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3463 | return rc; |
3464 | } | |
97837582 SF |
3465 | |
3466 | int | |
3467 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3468 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3469 | { | |
3470 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3471 | int rc = 0; | |
3472 | int bytes_returned = 0; | |
3473 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3474 | NTRANSACT_RSP *pSMBr = NULL; | |
3475 | ||
3476 | setCifsAclRetry: | |
3477 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3478 | (void **) &pSMBr); | |
3479 | if (rc) | |
3480 | return (rc); | |
3481 | ||
3482 | pSMB->MaxSetupCount = 0; | |
3483 | pSMB->Reserved = 0; | |
3484 | ||
3485 | param_count = 8; | |
3486 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3487 | data_count = acllen; | |
3488 | data_offset = param_offset + param_count; | |
3489 | byte_count = 3 /* pad */ + param_count; | |
3490 | ||
3491 | pSMB->DataCount = cpu_to_le32(data_count); | |
3492 | pSMB->TotalDataCount = pSMB->DataCount; | |
3493 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3494 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3495 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3496 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3497 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3498 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3499 | pSMB->SetupCount = 0; | |
3500 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3501 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3502 | ||
3503 | pSMB->Fid = fid; /* file handle always le */ | |
3504 | pSMB->Reserved2 = 0; | |
3505 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3506 | ||
3507 | if (pntsd && acllen) { | |
3508 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3509 | (char *) pntsd, | |
3510 | acllen); | |
be8e3b00 | 3511 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3512 | } else |
be8e3b00 | 3513 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3514 | |
3515 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3516 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3517 | ||
b6b38f70 | 3518 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3519 | if (rc) |
b6b38f70 | 3520 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3521 | cifs_buf_release(pSMB); |
3522 | ||
3523 | if (rc == -EAGAIN) | |
3524 | goto setCifsAclRetry; | |
3525 | ||
3526 | return (rc); | |
3527 | } | |
3528 | ||
79df1bae | 3529 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3530 | |
6b8edfe0 SF |
3531 | /* Legacy Query Path Information call for lookup to old servers such |
3532 | as Win9x/WinME */ | |
3533 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3534 | const unsigned char *searchName, |
3535 | FILE_ALL_INFO *pFinfo, | |
3536 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3537 | { |
ad7a2926 SF |
3538 | QUERY_INFORMATION_REQ *pSMB; |
3539 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3540 | int rc = 0; |
3541 | int bytes_returned; | |
3542 | int name_len; | |
3543 | ||
b6b38f70 | 3544 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3545 | QInfRetry: |
3546 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3547 | (void **) &pSMBr); |
6b8edfe0 SF |
3548 | if (rc) |
3549 | return rc; | |
3550 | ||
3551 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3552 | name_len = | |
50c2f753 SF |
3553 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3554 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3555 | name_len++; /* trailing null */ |
3556 | name_len *= 2; | |
50c2f753 | 3557 | } else { |
6b8edfe0 SF |
3558 | name_len = strnlen(searchName, PATH_MAX); |
3559 | name_len++; /* trailing null */ | |
3560 | strncpy(pSMB->FileName, searchName, name_len); | |
3561 | } | |
3562 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3563 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3564 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3565 | pSMB->ByteCount = cpu_to_le16(name_len); |
3566 | ||
3567 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3568 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3569 | if (rc) { |
b6b38f70 | 3570 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3571 | } else if (pFinfo) { |
1bd5bbcb SF |
3572 | struct timespec ts; |
3573 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3574 | |
3575 | /* decode response */ | |
1bd5bbcb | 3576 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3577 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3578 | ts.tv_nsec = 0; |
3579 | ts.tv_sec = time; | |
3580 | /* decode time fields */ | |
733f99ac | 3581 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3582 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3583 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3584 | pFinfo->AllocationSize = |
3585 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3586 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3587 | pFinfo->Attributes = | |
3588 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3589 | } else |
3590 | rc = -EIO; /* bad buffer passed in */ | |
3591 | ||
3592 | cifs_buf_release(pSMB); | |
3593 | ||
3594 | if (rc == -EAGAIN) | |
3595 | goto QInfRetry; | |
3596 | ||
3597 | return rc; | |
3598 | } | |
3599 | ||
bcd5357f JL |
3600 | int |
3601 | CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3602 | u16 netfid, FILE_ALL_INFO *pFindData) | |
3603 | { | |
3604 | struct smb_t2_qfi_req *pSMB = NULL; | |
3605 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3606 | int rc = 0; | |
3607 | int bytes_returned; | |
3608 | __u16 params, byte_count; | |
3609 | ||
3610 | QFileInfoRetry: | |
3611 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3612 | (void **) &pSMBr); | |
3613 | if (rc) | |
3614 | return rc; | |
3615 | ||
3616 | params = 2 /* level */ + 2 /* fid */; | |
3617 | pSMB->t2.TotalDataCount = 0; | |
3618 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3619 | /* BB find exact max data count below from sess structure BB */ | |
3620 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3621 | pSMB->t2.MaxSetupCount = 0; | |
3622 | pSMB->t2.Reserved = 0; | |
3623 | pSMB->t2.Flags = 0; | |
3624 | pSMB->t2.Timeout = 0; | |
3625 | pSMB->t2.Reserved2 = 0; | |
3626 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3627 | Fid) - 4); | |
3628 | pSMB->t2.DataCount = 0; | |
3629 | pSMB->t2.DataOffset = 0; | |
3630 | pSMB->t2.SetupCount = 1; | |
3631 | pSMB->t2.Reserved3 = 0; | |
3632 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3633 | byte_count = params + 1 /* pad */ ; | |
3634 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3635 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3636 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3637 | pSMB->Pad = 0; | |
3638 | pSMB->Fid = netfid; | |
be8e3b00 | 3639 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3640 | |
bcd5357f JL |
3641 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3642 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3643 | if (rc) { | |
f19159dc | 3644 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3645 | } else { /* decode response */ |
3646 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3647 | |
bcd5357f JL |
3648 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3649 | rc = -EIO; | |
820a803f | 3650 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3651 | rc = -EIO; /* bad smb */ |
3652 | else if (pFindData) { | |
3653 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3654 | memcpy((char *) pFindData, | |
3655 | (char *) &pSMBr->hdr.Protocol + | |
3656 | data_offset, sizeof(FILE_ALL_INFO)); | |
3657 | } else | |
3658 | rc = -ENOMEM; | |
3659 | } | |
3660 | cifs_buf_release(pSMB); | |
3661 | if (rc == -EAGAIN) | |
3662 | goto QFileInfoRetry; | |
6b8edfe0 | 3663 | |
bcd5357f JL |
3664 | return rc; |
3665 | } | |
6b8edfe0 | 3666 | |
1da177e4 LT |
3667 | int |
3668 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3669 | const unsigned char *searchName, | |
ad7a2926 | 3670 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3671 | int legacy /* old style infolevel */, |
737b758c | 3672 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3673 | { |
3674 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3675 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3676 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3677 | int rc = 0; | |
3678 | int bytes_returned; | |
3679 | int name_len; | |
3680 | __u16 params, byte_count; | |
3681 | ||
b6b38f70 | 3682 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3683 | QPathInfoRetry: |
3684 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3685 | (void **) &pSMBr); | |
3686 | if (rc) | |
3687 | return rc; | |
3688 | ||
3689 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3690 | name_len = | |
50c2f753 | 3691 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3692 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3693 | name_len++; /* trailing null */ |
3694 | name_len *= 2; | |
50c2f753 | 3695 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3696 | name_len = strnlen(searchName, PATH_MAX); |
3697 | name_len++; /* trailing null */ | |
3698 | strncpy(pSMB->FileName, searchName, name_len); | |
3699 | } | |
3700 | ||
50c2f753 | 3701 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3702 | pSMB->TotalDataCount = 0; |
3703 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3704 | /* BB find exact max SMB PDU from sess structure BB */ |
3705 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3706 | pSMB->MaxSetupCount = 0; |
3707 | pSMB->Reserved = 0; | |
3708 | pSMB->Flags = 0; | |
3709 | pSMB->Timeout = 0; | |
3710 | pSMB->Reserved2 = 0; | |
3711 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3712 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3713 | pSMB->DataCount = 0; |
3714 | pSMB->DataOffset = 0; | |
3715 | pSMB->SetupCount = 1; | |
3716 | pSMB->Reserved3 = 0; | |
3717 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3718 | byte_count = params + 1 /* pad */ ; | |
3719 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3720 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3721 | if (legacy) |
acf1a1b1 SF |
3722 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3723 | else | |
3724 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3725 | pSMB->Reserved4 = 0; |
be8e3b00 | 3726 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3727 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3728 | ||
3729 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3730 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3731 | if (rc) { | |
b6b38f70 | 3732 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3733 | } else { /* decode response */ |
3734 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3735 | ||
acf1a1b1 SF |
3736 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3737 | rc = -EIO; | |
820a803f | 3738 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3739 | rc = -EIO; /* bad smb */ |
820a803f | 3740 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3741 | rc = -EIO; /* 24 or 26 expected but we do not read |
3742 | last field */ | |
3743 | else if (pFindData) { | |
acf1a1b1 | 3744 | int size; |
1da177e4 | 3745 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3746 | |
3747 | /* On legacy responses we do not read the last field, | |
3748 | EAsize, fortunately since it varies by subdialect and | |
3749 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3750 | bytes depending but we don't care here */ | |
3751 | if (legacy) | |
acf1a1b1 SF |
3752 | size = sizeof(FILE_INFO_STANDARD); |
3753 | else | |
3754 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3755 | memcpy((char *) pFindData, |
3756 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3757 | data_offset, size); |
1da177e4 LT |
3758 | } else |
3759 | rc = -ENOMEM; | |
3760 | } | |
3761 | cifs_buf_release(pSMB); | |
3762 | if (rc == -EAGAIN) | |
3763 | goto QPathInfoRetry; | |
3764 | ||
3765 | return rc; | |
3766 | } | |
3767 | ||
c8634fd3 JL |
3768 | int |
3769 | CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon, | |
3770 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) | |
3771 | { | |
3772 | struct smb_t2_qfi_req *pSMB = NULL; | |
3773 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3774 | int rc = 0; | |
3775 | int bytes_returned; | |
3776 | __u16 params, byte_count; | |
3777 | ||
3778 | UnixQFileInfoRetry: | |
3779 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3780 | (void **) &pSMBr); | |
3781 | if (rc) | |
3782 | return rc; | |
3783 | ||
3784 | params = 2 /* level */ + 2 /* fid */; | |
3785 | pSMB->t2.TotalDataCount = 0; | |
3786 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3787 | /* BB find exact max data count below from sess structure BB */ | |
3788 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3789 | pSMB->t2.MaxSetupCount = 0; | |
3790 | pSMB->t2.Reserved = 0; | |
3791 | pSMB->t2.Flags = 0; | |
3792 | pSMB->t2.Timeout = 0; | |
3793 | pSMB->t2.Reserved2 = 0; | |
3794 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3795 | Fid) - 4); | |
3796 | pSMB->t2.DataCount = 0; | |
3797 | pSMB->t2.DataOffset = 0; | |
3798 | pSMB->t2.SetupCount = 1; | |
3799 | pSMB->t2.Reserved3 = 0; | |
3800 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3801 | byte_count = params + 1 /* pad */ ; | |
3802 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3803 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3804 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3805 | pSMB->Pad = 0; | |
3806 | pSMB->Fid = netfid; | |
be8e3b00 | 3807 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
3808 | |
3809 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3810 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3811 | if (rc) { | |
f19159dc | 3812 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3813 | } else { /* decode response */ |
3814 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3815 | ||
820a803f | 3816 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 3817 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3818 | "Unix Extensions can be disabled on mount " |
f19159dc | 3819 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3820 | rc = -EIO; /* bad smb */ |
3821 | } else { | |
3822 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3823 | memcpy((char *) pFindData, | |
3824 | (char *) &pSMBr->hdr.Protocol + | |
3825 | data_offset, | |
3826 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3827 | } | |
3828 | } | |
3829 | ||
3830 | cifs_buf_release(pSMB); | |
3831 | if (rc == -EAGAIN) | |
3832 | goto UnixQFileInfoRetry; | |
3833 | ||
3834 | return rc; | |
3835 | } | |
3836 | ||
1da177e4 LT |
3837 | int |
3838 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3839 | const unsigned char *searchName, | |
582d21e5 | 3840 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3841 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3842 | { |
3843 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3844 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3845 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3846 | int rc = 0; | |
3847 | int bytes_returned = 0; | |
3848 | int name_len; | |
3849 | __u16 params, byte_count; | |
3850 | ||
b6b38f70 | 3851 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3852 | UnixQPathInfoRetry: |
3853 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3854 | (void **) &pSMBr); | |
3855 | if (rc) | |
3856 | return rc; | |
3857 | ||
3858 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3859 | name_len = | |
b1a45695 | 3860 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3861 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3862 | name_len++; /* trailing null */ |
3863 | name_len *= 2; | |
50c2f753 | 3864 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3865 | name_len = strnlen(searchName, PATH_MAX); |
3866 | name_len++; /* trailing null */ | |
3867 | strncpy(pSMB->FileName, searchName, name_len); | |
3868 | } | |
3869 | ||
50c2f753 | 3870 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3871 | pSMB->TotalDataCount = 0; |
3872 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3873 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3874 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3875 | pSMB->MaxSetupCount = 0; |
3876 | pSMB->Reserved = 0; | |
3877 | pSMB->Flags = 0; | |
3878 | pSMB->Timeout = 0; | |
3879 | pSMB->Reserved2 = 0; | |
3880 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3881 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3882 | pSMB->DataCount = 0; |
3883 | pSMB->DataOffset = 0; | |
3884 | pSMB->SetupCount = 1; | |
3885 | pSMB->Reserved3 = 0; | |
3886 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3887 | byte_count = params + 1 /* pad */ ; | |
3888 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3889 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3890 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3891 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3892 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3893 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3894 | ||
3895 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3896 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3897 | if (rc) { | |
b6b38f70 | 3898 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3899 | } else { /* decode response */ |
3900 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3901 | ||
820a803f | 3902 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 3903 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3904 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3905 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3906 | rc = -EIO; /* bad smb */ |
3907 | } else { | |
3908 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3909 | memcpy((char *) pFindData, | |
3910 | (char *) &pSMBr->hdr.Protocol + | |
3911 | data_offset, | |
630f3f0c | 3912 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3913 | } |
3914 | } | |
3915 | cifs_buf_release(pSMB); | |
3916 | if (rc == -EAGAIN) | |
3917 | goto UnixQPathInfoRetry; | |
3918 | ||
3919 | return rc; | |
3920 | } | |
3921 | ||
1da177e4 LT |
3922 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3923 | int | |
3924 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3925 | const char *searchName, |
1da177e4 | 3926 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3927 | __u16 *pnetfid, |
3928 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3929 | { |
3930 | /* level 257 SMB_ */ | |
3931 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3932 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3933 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3934 | int rc = 0; |
3935 | int bytes_returned = 0; | |
3936 | int name_len; | |
3937 | __u16 params, byte_count; | |
3938 | ||
b6b38f70 | 3939 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3940 | |
3941 | findFirstRetry: | |
3942 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3943 | (void **) &pSMBr); | |
3944 | if (rc) | |
3945 | return rc; | |
3946 | ||
3947 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3948 | name_len = | |
50c2f753 | 3949 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3950 | PATH_MAX, nls_codepage, remap); |
3951 | /* We can not add the asterik earlier in case | |
3952 | it got remapped to 0xF03A as if it were part of the | |
3953 | directory name instead of a wildcard */ | |
1da177e4 | 3954 | name_len *= 2; |
ac67055e | 3955 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3956 | pSMB->FileName[name_len+1] = 0; |
3957 | pSMB->FileName[name_len+2] = '*'; | |
3958 | pSMB->FileName[name_len+3] = 0; | |
3959 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3960 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3961 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3962 | name_len += 2; |
1da177e4 LT |
3963 | } else { /* BB add check for overrun of SMB buf BB */ |
3964 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3965 | /* BB fix here and in unicode clause above ie |
790fe579 | 3966 | if (name_len > buffersize-header) |
1da177e4 LT |
3967 | free buffer exit; BB */ |
3968 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3969 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3970 | pSMB->FileName[name_len+1] = '*'; |
3971 | pSMB->FileName[name_len+2] = 0; | |
3972 | name_len += 3; | |
1da177e4 LT |
3973 | } |
3974 | ||
3975 | params = 12 + name_len /* includes null */ ; | |
3976 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3977 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3978 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3979 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3980 | pSMB->MaxSetupCount = 0; | |
3981 | pSMB->Reserved = 0; | |
3982 | pSMB->Flags = 0; | |
3983 | pSMB->Timeout = 0; | |
3984 | pSMB->Reserved2 = 0; | |
3985 | byte_count = params + 1 /* pad */ ; | |
3986 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3987 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3988 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3989 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3990 | - 4); | |
1da177e4 LT |
3991 | pSMB->DataCount = 0; |
3992 | pSMB->DataOffset = 0; | |
3993 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3994 | pSMB->Reserved3 = 0; | |
3995 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3996 | pSMB->SearchAttributes = | |
3997 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3998 | ATTR_DIRECTORY); | |
50c2f753 SF |
3999 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
4000 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
4001 | CIFS_SEARCH_RETURN_RESUME); |
4002 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
4003 | ||
4004 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4005 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4006 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4007 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4008 | ||
4009 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4010 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4011 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 4012 | |
88274815 SF |
4013 | if (rc) {/* BB add logic to retry regular search if Unix search |
4014 | rejected unexpectedly by server */ | |
1da177e4 | 4015 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4016 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4017 | |
88274815 | 4018 | cifs_buf_release(pSMB); |
1da177e4 LT |
4019 | |
4020 | /* BB eventually could optimize out free and realloc of buf */ | |
4021 | /* for this case */ | |
4022 | if (rc == -EAGAIN) | |
4023 | goto findFirstRetry; | |
4024 | } else { /* decode response */ | |
4025 | /* BB remember to free buffer if error BB */ | |
4026 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4027 | if (rc == 0) { |
b77d753c SF |
4028 | unsigned int lnoff; |
4029 | ||
1da177e4 | 4030 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4031 | psrch_inf->unicode = true; |
1da177e4 | 4032 | else |
4b18f2a9 | 4033 | psrch_inf->unicode = false; |
1da177e4 LT |
4034 | |
4035 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4036 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4037 | psrch_inf->srch_entries_start = |
4038 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4039 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4040 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4041 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4042 | ||
790fe579 | 4043 | if (parms->EndofSearch) |
4b18f2a9 | 4044 | psrch_inf->endOfSearch = true; |
1da177e4 | 4045 | else |
4b18f2a9 | 4046 | psrch_inf->endOfSearch = false; |
1da177e4 | 4047 | |
50c2f753 SF |
4048 | psrch_inf->entries_in_buffer = |
4049 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4050 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4051 | psrch_inf->entries_in_buffer; |
b77d753c SF |
4052 | lnoff = le16_to_cpu(parms->LastNameOffset); |
4053 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
4054 | lnoff) { | |
b6b38f70 | 4055 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4056 | psrch_inf->last_entry = NULL; |
4057 | return rc; | |
4058 | } | |
4059 | ||
0752f152 | 4060 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4061 | lnoff; |
4062 | ||
1da177e4 LT |
4063 | *pnetfid = parms->SearchHandle; |
4064 | } else { | |
4065 | cifs_buf_release(pSMB); | |
4066 | } | |
4067 | } | |
4068 | ||
4069 | return rc; | |
4070 | } | |
4071 | ||
4072 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 4073 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
4074 | { |
4075 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4076 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4077 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4078 | char *response_data; |
4079 | int rc = 0; | |
4080 | int bytes_returned, name_len; | |
4081 | __u16 params, byte_count; | |
4082 | ||
b6b38f70 | 4083 | cFYI(1, "In FindNext"); |
1da177e4 | 4084 | |
4b18f2a9 | 4085 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4086 | return -ENOENT; |
4087 | ||
4088 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4089 | (void **) &pSMBr); | |
4090 | if (rc) | |
4091 | return rc; | |
4092 | ||
50c2f753 | 4093 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4094 | byte_count = 0; |
4095 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4096 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
4097 | pSMB->MaxDataCount = | |
50c2f753 SF |
4098 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
4099 | 0xFFFFFF00); | |
1da177e4 LT |
4100 | pSMB->MaxSetupCount = 0; |
4101 | pSMB->Reserved = 0; | |
4102 | pSMB->Flags = 0; | |
4103 | pSMB->Timeout = 0; | |
4104 | pSMB->Reserved2 = 0; | |
4105 | pSMB->ParameterOffset = cpu_to_le16( | |
4106 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4107 | pSMB->DataCount = 0; | |
4108 | pSMB->DataOffset = 0; | |
4109 | pSMB->SetupCount = 1; | |
4110 | pSMB->Reserved3 = 0; | |
4111 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4112 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4113 | pSMB->SearchCount = | |
630f3f0c | 4114 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4115 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4116 | pSMB->ResumeKey = psrch_inf->resume_key; | |
4117 | pSMB->SearchFlags = | |
4118 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
4119 | ||
4120 | name_len = psrch_inf->resume_name_len; | |
4121 | params += name_len; | |
790fe579 | 4122 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4123 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4124 | byte_count += name_len; | |
ef6724e3 SF |
4125 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4126 | pSMB->ResumeFileName[name_len] = 0; | |
4127 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4128 | } else { |
4129 | rc = -EINVAL; | |
4130 | goto FNext2_err_exit; | |
4131 | } | |
4132 | byte_count = params + 1 /* pad */ ; | |
4133 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4134 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4135 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4136 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4137 | |
1da177e4 LT |
4138 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4139 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4140 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
4141 | if (rc) { |
4142 | if (rc == -EBADF) { | |
4b18f2a9 | 4143 | psrch_inf->endOfSearch = true; |
6353450a | 4144 | cifs_buf_release(pSMB); |
50c2f753 | 4145 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4146 | } else |
b6b38f70 | 4147 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4148 | } else { /* decode response */ |
4149 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4150 | |
790fe579 | 4151 | if (rc == 0) { |
b77d753c SF |
4152 | unsigned int lnoff; |
4153 | ||
1da177e4 LT |
4154 | /* BB fixme add lock for file (srch_info) struct here */ |
4155 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4156 | psrch_inf->unicode = true; |
1da177e4 | 4157 | else |
4b18f2a9 | 4158 | psrch_inf->unicode = false; |
1da177e4 LT |
4159 | response_data = (char *) &pSMBr->hdr.Protocol + |
4160 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4161 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4162 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4163 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4164 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4165 | cifs_small_buf_release( |
4166 | psrch_inf->ntwrk_buf_start); | |
4167 | else | |
4168 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4169 | psrch_inf->srch_entries_start = response_data; |
4170 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4171 | psrch_inf->smallBuf = 0; |
790fe579 | 4172 | if (parms->EndofSearch) |
4b18f2a9 | 4173 | psrch_inf->endOfSearch = true; |
1da177e4 | 4174 | else |
4b18f2a9 | 4175 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4176 | psrch_inf->entries_in_buffer = |
4177 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4178 | psrch_inf->index_of_last_entry += |
4179 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
4180 | lnoff = le16_to_cpu(parms->LastNameOffset); |
4181 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
4182 | lnoff) { | |
b6b38f70 | 4183 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4184 | psrch_inf->last_entry = NULL; |
4185 | return rc; | |
4186 | } else | |
4187 | psrch_inf->last_entry = | |
4188 | psrch_inf->srch_entries_start + lnoff; | |
4189 | ||
b6b38f70 JP |
4190 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4191 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4192 | |
4193 | /* BB fixme add unlock here */ | |
4194 | } | |
4195 | ||
4196 | } | |
4197 | ||
4198 | /* BB On error, should we leave previous search buf (and count and | |
4199 | last entry fields) intact or free the previous one? */ | |
4200 | ||
4201 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4202 | since file handle passed in no longer valid */ | |
4203 | FNext2_err_exit: | |
4204 | if (rc != 0) | |
4205 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4206 | return rc; |
4207 | } | |
4208 | ||
4209 | int | |
50c2f753 SF |
4210 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
4211 | const __u16 searchHandle) | |
1da177e4 LT |
4212 | { |
4213 | int rc = 0; | |
4214 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4215 | |
b6b38f70 | 4216 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4217 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4218 | ||
4219 | /* no sense returning error if session restarted | |
4220 | as file handle has been closed */ | |
790fe579 | 4221 | if (rc == -EAGAIN) |
1da177e4 LT |
4222 | return 0; |
4223 | if (rc) | |
4224 | return rc; | |
4225 | ||
1da177e4 LT |
4226 | pSMB->FileID = searchHandle; |
4227 | pSMB->ByteCount = 0; | |
133672ef | 4228 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4229 | if (rc) |
b6b38f70 | 4230 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4231 | |
a4544347 | 4232 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
4233 | |
4234 | /* Since session is dead, search handle closed on server already */ | |
4235 | if (rc == -EAGAIN) | |
4236 | rc = 0; | |
4237 | ||
4238 | return rc; | |
4239 | } | |
4240 | ||
1da177e4 LT |
4241 | int |
4242 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 4243 | const unsigned char *searchName, |
ad7a2926 | 4244 | __u64 *inode_number, |
50c2f753 | 4245 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4246 | { |
4247 | int rc = 0; | |
4248 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4249 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4250 | int name_len, bytes_returned; | |
4251 | __u16 params, byte_count; | |
4252 | ||
b6b38f70 | 4253 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 4254 | if (tcon == NULL) |
50c2f753 | 4255 | return -ENODEV; |
1da177e4 LT |
4256 | |
4257 | GetInodeNumberRetry: | |
4258 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4259 | (void **) &pSMBr); |
1da177e4 LT |
4260 | if (rc) |
4261 | return rc; | |
4262 | ||
1da177e4 LT |
4263 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4264 | name_len = | |
b1a45695 | 4265 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 4266 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4267 | name_len++; /* trailing null */ |
4268 | name_len *= 2; | |
50c2f753 | 4269 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4270 | name_len = strnlen(searchName, PATH_MAX); |
4271 | name_len++; /* trailing null */ | |
4272 | strncpy(pSMB->FileName, searchName, name_len); | |
4273 | } | |
4274 | ||
4275 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4276 | pSMB->TotalDataCount = 0; | |
4277 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4278 | /* BB find exact max data count below from sess structure BB */ | |
4279 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4280 | pSMB->MaxSetupCount = 0; | |
4281 | pSMB->Reserved = 0; | |
4282 | pSMB->Flags = 0; | |
4283 | pSMB->Timeout = 0; | |
4284 | pSMB->Reserved2 = 0; | |
4285 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4286 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4287 | pSMB->DataCount = 0; |
4288 | pSMB->DataOffset = 0; | |
4289 | pSMB->SetupCount = 1; | |
4290 | pSMB->Reserved3 = 0; | |
4291 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4292 | byte_count = params + 1 /* pad */ ; | |
4293 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4294 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4295 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4296 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4297 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4298 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4299 | ||
4300 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4301 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4302 | if (rc) { | |
b6b38f70 | 4303 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4304 | } else { |
4305 | /* decode response */ | |
4306 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4307 | /* BB also check enough total bytes returned */ |
820a803f | 4308 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4309 | /* If rc should we check for EOPNOSUPP and |
4310 | disable the srvino flag? or in caller? */ | |
4311 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4312 | else { |
1da177e4 LT |
4313 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4314 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4315 | struct file_internal_info *pfinfo; |
1da177e4 | 4316 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4317 | if (count < 8) { |
b6b38f70 | 4318 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4319 | rc = -EIO; |
4320 | goto GetInodeNumOut; | |
4321 | } | |
4322 | pfinfo = (struct file_internal_info *) | |
4323 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4324 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4325 | } |
4326 | } | |
4327 | GetInodeNumOut: | |
4328 | cifs_buf_release(pSMB); | |
4329 | if (rc == -EAGAIN) | |
4330 | goto GetInodeNumberRetry; | |
4331 | return rc; | |
4332 | } | |
1da177e4 | 4333 | |
fec4585f IM |
4334 | /* parses DFS refferal V3 structure |
4335 | * caller is responsible for freeing target_nodes | |
4336 | * returns: | |
4337 | * on success - 0 | |
4338 | * on failure - errno | |
4339 | */ | |
4340 | static int | |
a1fe78f1 | 4341 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4342 | unsigned int *num_of_nodes, |
4343 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4344 | const struct nls_table *nls_codepage, int remap, |
4345 | const char *searchName) | |
fec4585f IM |
4346 | { |
4347 | int i, rc = 0; | |
4348 | char *data_end; | |
4349 | bool is_unicode; | |
4350 | struct dfs_referral_level_3 *ref; | |
4351 | ||
5ca33c6a HH |
4352 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4353 | is_unicode = true; | |
4354 | else | |
4355 | is_unicode = false; | |
fec4585f IM |
4356 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4357 | ||
4358 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4359 | cERROR(1, "num_referrals: must be at least > 0," |
4360 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4361 | rc = -EINVAL; |
a1fe78f1 | 4362 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4363 | } |
4364 | ||
4365 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4366 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4367 | cERROR(1, "Referrals of V%d version are not supported," |
4368 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4369 | rc = -EINVAL; |
a1fe78f1 | 4370 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4371 | } |
4372 | ||
4373 | /* get the upper boundary of the resp buffer */ | |
4374 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4375 | le16_to_cpu(pSMBr->t2.DataCount); | |
4376 | ||
f19159dc | 4377 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4378 | *num_of_nodes, |
b6b38f70 | 4379 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4380 | |
4381 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4382 | *num_of_nodes, GFP_KERNEL); | |
4383 | if (*target_nodes == NULL) { | |
b6b38f70 | 4384 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4385 | rc = -ENOMEM; |
a1fe78f1 | 4386 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4387 | } |
4388 | ||
3ad2f3fb | 4389 | /* collect necessary data from referrals */ |
fec4585f IM |
4390 | for (i = 0; i < *num_of_nodes; i++) { |
4391 | char *temp; | |
4392 | int max_len; | |
4393 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4394 | ||
0e0d2cf3 | 4395 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4396 | if (is_unicode) { |
331c3135 JL |
4397 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4398 | GFP_KERNEL); | |
2920ee2b SF |
4399 | if (tmp == NULL) { |
4400 | rc = -ENOMEM; | |
4401 | goto parse_DFS_referrals_exit; | |
4402 | } | |
2c55608f IM |
4403 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4404 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4405 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4406 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4407 | nls_codepage); |
4408 | kfree(tmp); | |
4409 | } else | |
4410 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4411 | ||
fec4585f IM |
4412 | node->server_type = le16_to_cpu(ref->ServerType); |
4413 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4414 | ||
4415 | /* copy DfsPath */ | |
4416 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4417 | max_len = data_end - temp; | |
d185cda7 SF |
4418 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4419 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4420 | if (!node->path_name) { |
4421 | rc = -ENOMEM; | |
a1fe78f1 | 4422 | goto parse_DFS_referrals_exit; |
066ce689 | 4423 | } |
fec4585f IM |
4424 | |
4425 | /* copy link target UNC */ | |
4426 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4427 | max_len = data_end - temp; | |
d185cda7 SF |
4428 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4429 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4430 | if (!node->node_name) |
4431 | rc = -ENOMEM; | |
fec4585f IM |
4432 | } |
4433 | ||
a1fe78f1 | 4434 | parse_DFS_referrals_exit: |
fec4585f IM |
4435 | if (rc) { |
4436 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4437 | *target_nodes = NULL; | |
4438 | *num_of_nodes = 0; | |
4439 | } | |
4440 | return rc; | |
4441 | } | |
4442 | ||
1da177e4 LT |
4443 | int |
4444 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
4445 | const unsigned char *searchName, | |
c2cf07d5 SF |
4446 | struct dfs_info3_param **target_nodes, |
4447 | unsigned int *num_of_nodes, | |
737b758c | 4448 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4449 | { |
4450 | /* TRANS2_GET_DFS_REFERRAL */ | |
4451 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4452 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4453 | int rc = 0; |
4454 | int bytes_returned; | |
4455 | int name_len; | |
1da177e4 | 4456 | __u16 params, byte_count; |
c2cf07d5 SF |
4457 | *num_of_nodes = 0; |
4458 | *target_nodes = NULL; | |
1da177e4 | 4459 | |
b6b38f70 | 4460 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4461 | if (ses == NULL) |
4462 | return -ENODEV; | |
4463 | getDFSRetry: | |
4464 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4465 | (void **) &pSMBr); | |
4466 | if (rc) | |
4467 | return rc; | |
50c2f753 SF |
4468 | |
4469 | /* server pointer checked in called function, | |
1982c344 SF |
4470 | but should never be null here anyway */ |
4471 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4472 | pSMB->hdr.Tid = ses->ipc_tid; |
4473 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4474 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4475 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4476 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4477 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4478 | |
4479 | if (ses->capabilities & CAP_UNICODE) { | |
4480 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4481 | name_len = | |
b1a45695 | 4482 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4483 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4484 | name_len++; /* trailing null */ |
4485 | name_len *= 2; | |
50c2f753 | 4486 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4487 | name_len = strnlen(searchName, PATH_MAX); |
4488 | name_len++; /* trailing null */ | |
4489 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4490 | } | |
4491 | ||
790fe579 SF |
4492 | if (ses->server) { |
4493 | if (ses->server->secMode & | |
1a4e15a0 SF |
4494 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4495 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4496 | } | |
4497 | ||
50c2f753 | 4498 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4499 | |
1da177e4 LT |
4500 | params = 2 /* level */ + name_len /*includes null */ ; |
4501 | pSMB->TotalDataCount = 0; | |
4502 | pSMB->DataCount = 0; | |
4503 | pSMB->DataOffset = 0; | |
4504 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4505 | /* BB find exact max SMB PDU from sess structure BB */ |
4506 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4507 | pSMB->MaxSetupCount = 0; |
4508 | pSMB->Reserved = 0; | |
4509 | pSMB->Flags = 0; | |
4510 | pSMB->Timeout = 0; | |
4511 | pSMB->Reserved2 = 0; | |
4512 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4513 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4514 | pSMB->SetupCount = 1; |
4515 | pSMB->Reserved3 = 0; | |
4516 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4517 | byte_count = params + 3 /* pad */ ; | |
4518 | pSMB->ParameterCount = cpu_to_le16(params); | |
4519 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4520 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4521 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4522 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4523 | ||
4524 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4525 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4526 | if (rc) { | |
b6b38f70 | 4527 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4528 | goto GetDFSRefExit; |
4529 | } | |
4530 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4531 | |
c2cf07d5 | 4532 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4533 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4534 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4535 | goto GetDFSRefExit; |
4536 | } | |
c2cf07d5 | 4537 | |
b6b38f70 | 4538 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4539 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4540 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4541 | |
fec4585f | 4542 | /* parse returned result into more usable form */ |
a1fe78f1 | 4543 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4544 | target_nodes, nls_codepage, remap, |
4545 | searchName); | |
c2cf07d5 | 4546 | |
1da177e4 | 4547 | GetDFSRefExit: |
0d817bc0 | 4548 | cifs_buf_release(pSMB); |
1da177e4 LT |
4549 | |
4550 | if (rc == -EAGAIN) | |
4551 | goto getDFSRetry; | |
4552 | ||
4553 | return rc; | |
4554 | } | |
4555 | ||
20962438 SF |
4556 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4557 | int | |
4558 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4559 | { | |
4560 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4561 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4562 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4563 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4564 | int rc = 0; | |
4565 | int bytes_returned = 0; | |
4566 | __u16 params, byte_count; | |
4567 | ||
b6b38f70 | 4568 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4569 | oldQFSInfoRetry: |
4570 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4571 | (void **) &pSMBr); | |
4572 | if (rc) | |
4573 | return rc; | |
20962438 SF |
4574 | |
4575 | params = 2; /* level */ | |
4576 | pSMB->TotalDataCount = 0; | |
4577 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4578 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4579 | pSMB->MaxSetupCount = 0; | |
4580 | pSMB->Reserved = 0; | |
4581 | pSMB->Flags = 0; | |
4582 | pSMB->Timeout = 0; | |
4583 | pSMB->Reserved2 = 0; | |
4584 | byte_count = params + 1 /* pad */ ; | |
4585 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4586 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4587 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4588 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4589 | pSMB->DataCount = 0; | |
4590 | pSMB->DataOffset = 0; | |
4591 | pSMB->SetupCount = 1; | |
4592 | pSMB->Reserved3 = 0; | |
4593 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4594 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4595 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4596 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4597 | ||
4598 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4599 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4600 | if (rc) { | |
b6b38f70 | 4601 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4602 | } else { /* decode response */ |
4603 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4604 | ||
820a803f | 4605 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4606 | rc = -EIO; /* bad smb */ |
4607 | else { | |
4608 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4609 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4610 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4611 | |
50c2f753 | 4612 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4613 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4614 | FSData->f_bsize = | |
4615 | le16_to_cpu(response_data->BytesPerSector) * | |
4616 | le32_to_cpu(response_data-> | |
4617 | SectorsPerAllocationUnit); | |
4618 | FSData->f_blocks = | |
50c2f753 | 4619 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4620 | FSData->f_bfree = FSData->f_bavail = |
4621 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4622 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4623 | (unsigned long long)FSData->f_blocks, | |
4624 | (unsigned long long)FSData->f_bfree, | |
4625 | FSData->f_bsize); | |
20962438 SF |
4626 | } |
4627 | } | |
4628 | cifs_buf_release(pSMB); | |
4629 | ||
4630 | if (rc == -EAGAIN) | |
4631 | goto oldQFSInfoRetry; | |
4632 | ||
4633 | return rc; | |
4634 | } | |
4635 | ||
1da177e4 | 4636 | int |
737b758c | 4637 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4638 | { |
4639 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4640 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4641 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4642 | FILE_SYSTEM_INFO *response_data; | |
4643 | int rc = 0; | |
4644 | int bytes_returned = 0; | |
4645 | __u16 params, byte_count; | |
4646 | ||
b6b38f70 | 4647 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4648 | QFSInfoRetry: |
4649 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4650 | (void **) &pSMBr); | |
4651 | if (rc) | |
4652 | return rc; | |
4653 | ||
4654 | params = 2; /* level */ | |
4655 | pSMB->TotalDataCount = 0; | |
4656 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4657 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4658 | pSMB->MaxSetupCount = 0; |
4659 | pSMB->Reserved = 0; | |
4660 | pSMB->Flags = 0; | |
4661 | pSMB->Timeout = 0; | |
4662 | pSMB->Reserved2 = 0; | |
4663 | byte_count = params + 1 /* pad */ ; | |
4664 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4665 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4666 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4667 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4668 | pSMB->DataCount = 0; |
4669 | pSMB->DataOffset = 0; | |
4670 | pSMB->SetupCount = 1; | |
4671 | pSMB->Reserved3 = 0; | |
4672 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4673 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4674 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4675 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4676 | ||
4677 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4678 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4679 | if (rc) { | |
b6b38f70 | 4680 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4681 | } else { /* decode response */ |
50c2f753 | 4682 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4683 | |
820a803f | 4684 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4685 | rc = -EIO; /* bad smb */ |
4686 | else { | |
4687 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4688 | |
4689 | response_data = | |
4690 | (FILE_SYSTEM_INFO | |
4691 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4692 | data_offset); | |
4693 | FSData->f_bsize = | |
4694 | le32_to_cpu(response_data->BytesPerSector) * | |
4695 | le32_to_cpu(response_data-> | |
4696 | SectorsPerAllocationUnit); | |
4697 | FSData->f_blocks = | |
4698 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4699 | FSData->f_bfree = FSData->f_bavail = | |
4700 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4701 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4702 | (unsigned long long)FSData->f_blocks, | |
4703 | (unsigned long long)FSData->f_bfree, | |
4704 | FSData->f_bsize); | |
1da177e4 LT |
4705 | } |
4706 | } | |
4707 | cifs_buf_release(pSMB); | |
4708 | ||
4709 | if (rc == -EAGAIN) | |
4710 | goto QFSInfoRetry; | |
4711 | ||
4712 | return rc; | |
4713 | } | |
4714 | ||
4715 | int | |
737b758c | 4716 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4717 | { |
4718 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4719 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4720 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4721 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4722 | int rc = 0; | |
4723 | int bytes_returned = 0; | |
4724 | __u16 params, byte_count; | |
4725 | ||
b6b38f70 | 4726 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4727 | QFSAttributeRetry: |
4728 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4729 | (void **) &pSMBr); | |
4730 | if (rc) | |
4731 | return rc; | |
4732 | ||
4733 | params = 2; /* level */ | |
4734 | pSMB->TotalDataCount = 0; | |
4735 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4736 | /* BB find exact max SMB PDU from sess structure BB */ |
4737 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4738 | pSMB->MaxSetupCount = 0; |
4739 | pSMB->Reserved = 0; | |
4740 | pSMB->Flags = 0; | |
4741 | pSMB->Timeout = 0; | |
4742 | pSMB->Reserved2 = 0; | |
4743 | byte_count = params + 1 /* pad */ ; | |
4744 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4745 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4746 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4747 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4748 | pSMB->DataCount = 0; |
4749 | pSMB->DataOffset = 0; | |
4750 | pSMB->SetupCount = 1; | |
4751 | pSMB->Reserved3 = 0; | |
4752 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4753 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4754 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4755 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4756 | ||
4757 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4758 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4759 | if (rc) { | |
b6b38f70 | 4760 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4761 | } else { /* decode response */ |
4762 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4763 | ||
820a803f | 4764 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4765 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4766 | rc = -EIO; /* bad smb */ |
4767 | } else { | |
4768 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4769 | response_data = | |
4770 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4771 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4772 | data_offset); | |
4773 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4774 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4775 | } |
4776 | } | |
4777 | cifs_buf_release(pSMB); | |
4778 | ||
4779 | if (rc == -EAGAIN) | |
4780 | goto QFSAttributeRetry; | |
4781 | ||
4782 | return rc; | |
4783 | } | |
4784 | ||
4785 | int | |
737b758c | 4786 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4787 | { |
4788 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4789 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4790 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4791 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4792 | int rc = 0; | |
4793 | int bytes_returned = 0; | |
4794 | __u16 params, byte_count; | |
4795 | ||
b6b38f70 | 4796 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4797 | QFSDeviceRetry: |
4798 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4799 | (void **) &pSMBr); | |
4800 | if (rc) | |
4801 | return rc; | |
4802 | ||
4803 | params = 2; /* level */ | |
4804 | pSMB->TotalDataCount = 0; | |
4805 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4806 | /* BB find exact max SMB PDU from sess structure BB */ |
4807 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4808 | pSMB->MaxSetupCount = 0; |
4809 | pSMB->Reserved = 0; | |
4810 | pSMB->Flags = 0; | |
4811 | pSMB->Timeout = 0; | |
4812 | pSMB->Reserved2 = 0; | |
4813 | byte_count = params + 1 /* pad */ ; | |
4814 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4815 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4816 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4817 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4818 | |
4819 | pSMB->DataCount = 0; | |
4820 | pSMB->DataOffset = 0; | |
4821 | pSMB->SetupCount = 1; | |
4822 | pSMB->Reserved3 = 0; | |
4823 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4824 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4825 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4826 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4827 | ||
4828 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4829 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4830 | if (rc) { | |
b6b38f70 | 4831 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4832 | } else { /* decode response */ |
4833 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4834 | ||
820a803f JL |
4835 | if (rc || get_bcc(&pSMBr->hdr) < |
4836 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4837 | rc = -EIO; /* bad smb */ |
4838 | else { | |
4839 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4840 | response_data = | |
737b758c SF |
4841 | (FILE_SYSTEM_DEVICE_INFO *) |
4842 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4843 | data_offset); |
4844 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4845 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4846 | } |
4847 | } | |
4848 | cifs_buf_release(pSMB); | |
4849 | ||
4850 | if (rc == -EAGAIN) | |
4851 | goto QFSDeviceRetry; | |
4852 | ||
4853 | return rc; | |
4854 | } | |
4855 | ||
4856 | int | |
737b758c | 4857 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4858 | { |
4859 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4860 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4861 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4862 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4863 | int rc = 0; | |
4864 | int bytes_returned = 0; | |
4865 | __u16 params, byte_count; | |
4866 | ||
b6b38f70 | 4867 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 4868 | QFSUnixRetry: |
f569599a JL |
4869 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4870 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4871 | if (rc) |
4872 | return rc; | |
4873 | ||
4874 | params = 2; /* level */ | |
4875 | pSMB->TotalDataCount = 0; | |
4876 | pSMB->DataCount = 0; | |
4877 | pSMB->DataOffset = 0; | |
4878 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4879 | /* BB find exact max SMB PDU from sess structure BB */ |
4880 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4881 | pSMB->MaxSetupCount = 0; |
4882 | pSMB->Reserved = 0; | |
4883 | pSMB->Flags = 0; | |
4884 | pSMB->Timeout = 0; | |
4885 | pSMB->Reserved2 = 0; | |
4886 | byte_count = params + 1 /* pad */ ; | |
4887 | pSMB->ParameterCount = cpu_to_le16(params); | |
4888 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4889 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4890 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4891 | pSMB->SetupCount = 1; |
4892 | pSMB->Reserved3 = 0; | |
4893 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4894 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4895 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4896 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4897 | ||
4898 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4899 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4900 | if (rc) { | |
b6b38f70 | 4901 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4902 | } else { /* decode response */ |
4903 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4904 | ||
820a803f | 4905 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4906 | rc = -EIO; /* bad smb */ |
4907 | } else { | |
4908 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4909 | response_data = | |
4910 | (FILE_SYSTEM_UNIX_INFO | |
4911 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4912 | data_offset); | |
4913 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4914 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4915 | } |
4916 | } | |
4917 | cifs_buf_release(pSMB); | |
4918 | ||
4919 | if (rc == -EAGAIN) | |
4920 | goto QFSUnixRetry; | |
4921 | ||
4922 | ||
4923 | return rc; | |
4924 | } | |
4925 | ||
ac67055e | 4926 | int |
45abc6ee | 4927 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4928 | { |
4929 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4930 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4931 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4932 | int rc = 0; | |
4933 | int bytes_returned = 0; | |
4934 | __u16 params, param_offset, offset, byte_count; | |
4935 | ||
b6b38f70 | 4936 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4937 | SETFSUnixRetry: |
f26282c9 | 4938 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4939 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4940 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4941 | if (rc) |
4942 | return rc; | |
4943 | ||
4944 | params = 4; /* 2 bytes zero followed by info level. */ | |
4945 | pSMB->MaxSetupCount = 0; | |
4946 | pSMB->Reserved = 0; | |
4947 | pSMB->Flags = 0; | |
4948 | pSMB->Timeout = 0; | |
4949 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4950 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4951 | - 4; | |
ac67055e JA |
4952 | offset = param_offset + params; |
4953 | ||
4954 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4955 | /* BB find exact max SMB PDU from sess structure BB */ |
4956 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4957 | pSMB->SetupCount = 1; |
4958 | pSMB->Reserved3 = 0; | |
4959 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4960 | byte_count = 1 /* pad */ + params + 12; | |
4961 | ||
4962 | pSMB->DataCount = cpu_to_le16(12); | |
4963 | pSMB->ParameterCount = cpu_to_le16(params); | |
4964 | pSMB->TotalDataCount = pSMB->DataCount; | |
4965 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4966 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4967 | pSMB->DataOffset = cpu_to_le16(offset); | |
4968 | ||
4969 | /* Params. */ | |
4970 | pSMB->FileNum = 0; | |
4971 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4972 | ||
4973 | /* Data. */ | |
4974 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4975 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4976 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4977 | ||
be8e3b00 | 4978 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4979 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4980 | ||
4981 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4982 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4983 | if (rc) { | |
b6b38f70 | 4984 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4985 | } else { /* decode response */ |
4986 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4987 | if (rc) |
ac67055e | 4988 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4989 | } |
4990 | cifs_buf_release(pSMB); | |
4991 | ||
4992 | if (rc == -EAGAIN) | |
4993 | goto SETFSUnixRetry; | |
4994 | ||
4995 | return rc; | |
4996 | } | |
4997 | ||
4998 | ||
1da177e4 LT |
4999 | |
5000 | int | |
5001 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 5002 | struct kstatfs *FSData) |
1da177e4 LT |
5003 | { |
5004 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5005 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5006 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5007 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5008 | int rc = 0; | |
5009 | int bytes_returned = 0; | |
5010 | __u16 params, byte_count; | |
5011 | ||
b6b38f70 | 5012 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5013 | QFSPosixRetry: |
5014 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5015 | (void **) &pSMBr); | |
5016 | if (rc) | |
5017 | return rc; | |
5018 | ||
5019 | params = 2; /* level */ | |
5020 | pSMB->TotalDataCount = 0; | |
5021 | pSMB->DataCount = 0; | |
5022 | pSMB->DataOffset = 0; | |
5023 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5024 | /* BB find exact max SMB PDU from sess structure BB */ |
5025 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5026 | pSMB->MaxSetupCount = 0; |
5027 | pSMB->Reserved = 0; | |
5028 | pSMB->Flags = 0; | |
5029 | pSMB->Timeout = 0; | |
5030 | pSMB->Reserved2 = 0; | |
5031 | byte_count = params + 1 /* pad */ ; | |
5032 | pSMB->ParameterCount = cpu_to_le16(params); | |
5033 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5034 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5035 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5036 | pSMB->SetupCount = 1; |
5037 | pSMB->Reserved3 = 0; | |
5038 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5039 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5040 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5041 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5042 | ||
5043 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5044 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5045 | if (rc) { | |
b6b38f70 | 5046 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5047 | } else { /* decode response */ |
5048 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5049 | ||
820a803f | 5050 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5051 | rc = -EIO; /* bad smb */ |
5052 | } else { | |
5053 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5054 | response_data = | |
5055 | (FILE_SYSTEM_POSIX_INFO | |
5056 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5057 | data_offset); | |
5058 | FSData->f_bsize = | |
5059 | le32_to_cpu(response_data->BlockSize); | |
5060 | FSData->f_blocks = | |
5061 | le64_to_cpu(response_data->TotalBlocks); | |
5062 | FSData->f_bfree = | |
5063 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5064 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5065 | FSData->f_bavail = FSData->f_bfree; |
5066 | } else { | |
5067 | FSData->f_bavail = | |
50c2f753 | 5068 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5069 | } |
790fe579 | 5070 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5071 | FSData->f_files = |
50c2f753 | 5072 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5073 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5074 | FSData->f_ffree = |
50c2f753 | 5075 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5076 | } |
5077 | } | |
5078 | cifs_buf_release(pSMB); | |
5079 | ||
5080 | if (rc == -EAGAIN) | |
5081 | goto QFSPosixRetry; | |
5082 | ||
5083 | return rc; | |
5084 | } | |
5085 | ||
5086 | ||
50c2f753 SF |
5087 | /* We can not use write of zero bytes trick to |
5088 | set file size due to need for large file support. Also note that | |
5089 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5090 | routine which is only needed to work around a sharing violation bug |
5091 | in Samba which this routine can run into */ | |
5092 | ||
5093 | int | |
5094 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 5095 | __u64 size, bool SetAllocation, |
737b758c | 5096 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5097 | { |
5098 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5099 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5100 | struct file_end_of_file_info *parm_data; | |
5101 | int name_len; | |
5102 | int rc = 0; | |
5103 | int bytes_returned = 0; | |
5104 | __u16 params, byte_count, data_count, param_offset, offset; | |
5105 | ||
b6b38f70 | 5106 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5107 | SetEOFRetry: |
5108 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5109 | (void **) &pSMBr); | |
5110 | if (rc) | |
5111 | return rc; | |
5112 | ||
5113 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5114 | name_len = | |
b1a45695 | 5115 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5116 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5117 | name_len++; /* trailing null */ |
5118 | name_len *= 2; | |
3e87d803 | 5119 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5120 | name_len = strnlen(fileName, PATH_MAX); |
5121 | name_len++; /* trailing null */ | |
5122 | strncpy(pSMB->FileName, fileName, name_len); | |
5123 | } | |
5124 | params = 6 + name_len; | |
26f57364 | 5125 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5126 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5127 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5128 | pSMB->MaxSetupCount = 0; |
5129 | pSMB->Reserved = 0; | |
5130 | pSMB->Flags = 0; | |
5131 | pSMB->Timeout = 0; | |
5132 | pSMB->Reserved2 = 0; | |
5133 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5134 | InformationLevel) - 4; |
1da177e4 | 5135 | offset = param_offset + params; |
790fe579 | 5136 | if (SetAllocation) { |
50c2f753 SF |
5137 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5138 | pSMB->InformationLevel = | |
5139 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5140 | else | |
5141 | pSMB->InformationLevel = | |
5142 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5143 | } else /* Set File Size */ { | |
1da177e4 LT |
5144 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5145 | pSMB->InformationLevel = | |
50c2f753 | 5146 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5147 | else |
5148 | pSMB->InformationLevel = | |
50c2f753 | 5149 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5150 | } |
5151 | ||
5152 | parm_data = | |
5153 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5154 | offset); | |
5155 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5156 | pSMB->DataOffset = cpu_to_le16(offset); | |
5157 | pSMB->SetupCount = 1; | |
5158 | pSMB->Reserved3 = 0; | |
5159 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5160 | byte_count = 3 /* pad */ + params + data_count; | |
5161 | pSMB->DataCount = cpu_to_le16(data_count); | |
5162 | pSMB->TotalDataCount = pSMB->DataCount; | |
5163 | pSMB->ParameterCount = cpu_to_le16(params); | |
5164 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5165 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5166 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5167 | parm_data->FileSize = cpu_to_le64(size); |
5168 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5169 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5170 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5171 | if (rc) |
b6b38f70 | 5172 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5173 | |
5174 | cifs_buf_release(pSMB); | |
5175 | ||
5176 | if (rc == -EAGAIN) | |
5177 | goto SetEOFRetry; | |
5178 | ||
5179 | return rc; | |
5180 | } | |
5181 | ||
5182 | int | |
50c2f753 | 5183 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 5184 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5185 | { |
5186 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5187 | struct file_end_of_file_info *parm_data; |
5188 | int rc = 0; | |
1da177e4 LT |
5189 | __u16 params, param_offset, offset, byte_count, count; |
5190 | ||
b6b38f70 JP |
5191 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5192 | (long long)size); | |
cd63499c SF |
5193 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5194 | ||
1da177e4 LT |
5195 | if (rc) |
5196 | return rc; | |
5197 | ||
5198 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5199 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5200 | |
1da177e4 LT |
5201 | params = 6; |
5202 | pSMB->MaxSetupCount = 0; | |
5203 | pSMB->Reserved = 0; | |
5204 | pSMB->Flags = 0; | |
5205 | pSMB->Timeout = 0; | |
5206 | pSMB->Reserved2 = 0; | |
5207 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5208 | offset = param_offset + params; | |
5209 | ||
1da177e4 LT |
5210 | count = sizeof(struct file_end_of_file_info); |
5211 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5212 | /* BB find exact max SMB PDU from sess structure BB */ |
5213 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5214 | pSMB->SetupCount = 1; |
5215 | pSMB->Reserved3 = 0; | |
5216 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5217 | byte_count = 3 /* pad */ + params + count; | |
5218 | pSMB->DataCount = cpu_to_le16(count); | |
5219 | pSMB->ParameterCount = cpu_to_le16(params); | |
5220 | pSMB->TotalDataCount = pSMB->DataCount; | |
5221 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5222 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5223 | parm_data = | |
50c2f753 SF |
5224 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5225 | + offset); | |
1da177e4 LT |
5226 | pSMB->DataOffset = cpu_to_le16(offset); |
5227 | parm_data->FileSize = cpu_to_le64(size); | |
5228 | pSMB->Fid = fid; | |
790fe579 | 5229 | if (SetAllocation) { |
1da177e4 LT |
5230 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5231 | pSMB->InformationLevel = | |
5232 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5233 | else | |
5234 | pSMB->InformationLevel = | |
5235 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5236 | } else /* Set File Size */ { |
1da177e4 LT |
5237 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5238 | pSMB->InformationLevel = | |
50c2f753 | 5239 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5240 | else |
5241 | pSMB->InformationLevel = | |
50c2f753 | 5242 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5243 | } |
5244 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5245 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5246 | pSMB->ByteCount = cpu_to_le16(byte_count); |
133672ef | 5247 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 5248 | if (rc) { |
b6b38f70 | 5249 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5250 | } |
5251 | ||
50c2f753 | 5252 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5253 | since file handle passed in no longer valid */ |
5254 | ||
5255 | return rc; | |
5256 | } | |
5257 | ||
50c2f753 | 5258 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5259 | an open handle, rather than by pathname - this is awkward due to |
5260 | potential access conflicts on the open, but it is unavoidable for these | |
5261 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5262 | time and resort to the original setpathinfo level which takes the ancient | |
5263 | DOS time format with 2 second granularity */ | |
5264 | int | |
2dd2dfa0 JL |
5265 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
5266 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
5267 | { |
5268 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5269 | char *data_offset; |
5270 | int rc = 0; | |
1da177e4 LT |
5271 | __u16 params, param_offset, offset, byte_count, count; |
5272 | ||
b6b38f70 | 5273 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5274 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5275 | ||
1da177e4 LT |
5276 | if (rc) |
5277 | return rc; | |
5278 | ||
2dd2dfa0 JL |
5279 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5280 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5281 | |
1da177e4 LT |
5282 | params = 6; |
5283 | pSMB->MaxSetupCount = 0; | |
5284 | pSMB->Reserved = 0; | |
5285 | pSMB->Flags = 0; | |
5286 | pSMB->Timeout = 0; | |
5287 | pSMB->Reserved2 = 0; | |
5288 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5289 | offset = param_offset + params; | |
5290 | ||
50c2f753 | 5291 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 5292 | |
26f57364 | 5293 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5294 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5295 | /* BB find max SMB PDU from sess */ |
5296 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5297 | pSMB->SetupCount = 1; |
5298 | pSMB->Reserved3 = 0; | |
5299 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5300 | byte_count = 3 /* pad */ + params + count; | |
5301 | pSMB->DataCount = cpu_to_le16(count); | |
5302 | pSMB->ParameterCount = cpu_to_le16(params); | |
5303 | pSMB->TotalDataCount = pSMB->DataCount; | |
5304 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5305 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5306 | pSMB->DataOffset = cpu_to_le16(offset); | |
5307 | pSMB->Fid = fid; | |
5308 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5309 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5310 | else | |
5311 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5312 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5313 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5314 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5315 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 5316 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 5317 | if (rc) |
b6b38f70 | 5318 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5319 | |
50c2f753 | 5320 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5321 | since file handle passed in no longer valid */ |
5322 | ||
5323 | return rc; | |
5324 | } | |
5325 | ||
6d22f098 JL |
5326 | int |
5327 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
5328 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
5329 | { | |
5330 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5331 | char *data_offset; | |
5332 | int rc = 0; | |
5333 | __u16 params, param_offset, offset, byte_count, count; | |
5334 | ||
b6b38f70 | 5335 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5336 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5337 | ||
5338 | if (rc) | |
5339 | return rc; | |
5340 | ||
5341 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5342 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5343 | ||
5344 | params = 6; | |
5345 | pSMB->MaxSetupCount = 0; | |
5346 | pSMB->Reserved = 0; | |
5347 | pSMB->Flags = 0; | |
5348 | pSMB->Timeout = 0; | |
5349 | pSMB->Reserved2 = 0; | |
5350 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5351 | offset = param_offset + params; | |
5352 | ||
5353 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5354 | ||
5355 | count = 1; | |
5356 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5357 | /* BB find max SMB PDU from sess */ | |
5358 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5359 | pSMB->SetupCount = 1; | |
5360 | pSMB->Reserved3 = 0; | |
5361 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5362 | byte_count = 3 /* pad */ + params + count; | |
5363 | pSMB->DataCount = cpu_to_le16(count); | |
5364 | pSMB->ParameterCount = cpu_to_le16(params); | |
5365 | pSMB->TotalDataCount = pSMB->DataCount; | |
5366 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5367 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5368 | pSMB->DataOffset = cpu_to_le16(offset); | |
5369 | pSMB->Fid = fid; | |
5370 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5371 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5372 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5373 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5374 | *data_offset = delete_file ? 1 : 0; | |
5375 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5376 | if (rc) | |
b6b38f70 | 5377 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5378 | |
5379 | return rc; | |
5380 | } | |
1da177e4 LT |
5381 | |
5382 | int | |
6fc000e5 JL |
5383 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
5384 | const char *fileName, const FILE_BASIC_INFO *data, | |
5385 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5386 | { |
5387 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5388 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5389 | int name_len; | |
5390 | int rc = 0; | |
5391 | int bytes_returned = 0; | |
5392 | char *data_offset; | |
5393 | __u16 params, param_offset, offset, byte_count, count; | |
5394 | ||
b6b38f70 | 5395 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5396 | |
5397 | SetTimesRetry: | |
5398 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5399 | (void **) &pSMBr); | |
5400 | if (rc) | |
5401 | return rc; | |
5402 | ||
5403 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5404 | name_len = | |
b1a45695 | 5405 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5406 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5407 | name_len++; /* trailing null */ |
5408 | name_len *= 2; | |
50c2f753 | 5409 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5410 | name_len = strnlen(fileName, PATH_MAX); |
5411 | name_len++; /* trailing null */ | |
5412 | strncpy(pSMB->FileName, fileName, name_len); | |
5413 | } | |
5414 | ||
5415 | params = 6 + name_len; | |
26f57364 | 5416 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5417 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5418 | /* BB find max SMB PDU from sess structure BB */ |
5419 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5420 | pSMB->MaxSetupCount = 0; |
5421 | pSMB->Reserved = 0; | |
5422 | pSMB->Flags = 0; | |
5423 | pSMB->Timeout = 0; | |
5424 | pSMB->Reserved2 = 0; | |
5425 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5426 | InformationLevel) - 4; |
1da177e4 LT |
5427 | offset = param_offset + params; |
5428 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5429 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5430 | pSMB->DataOffset = cpu_to_le16(offset); | |
5431 | pSMB->SetupCount = 1; | |
5432 | pSMB->Reserved3 = 0; | |
5433 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5434 | byte_count = 3 /* pad */ + params + count; | |
5435 | ||
5436 | pSMB->DataCount = cpu_to_le16(count); | |
5437 | pSMB->ParameterCount = cpu_to_le16(params); | |
5438 | pSMB->TotalDataCount = pSMB->DataCount; | |
5439 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5440 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5441 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5442 | else | |
5443 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5444 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5445 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5446 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5447 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5448 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5449 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5450 | if (rc) |
b6b38f70 | 5451 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5452 | |
5453 | cifs_buf_release(pSMB); | |
5454 | ||
5455 | if (rc == -EAGAIN) | |
5456 | goto SetTimesRetry; | |
5457 | ||
5458 | return rc; | |
5459 | } | |
5460 | ||
5461 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5462 | /* Can be used to set attributes */ | |
5463 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5464 | handling it anyway and NT4 was what we thought it would be needed for | |
5465 | Do not delete it until we prove whether needed for Win9x though */ | |
5466 | int | |
5467 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5468 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5469 | { | |
5470 | SETATTR_REQ *pSMB = NULL; | |
5471 | SETATTR_RSP *pSMBr = NULL; | |
5472 | int rc = 0; | |
5473 | int bytes_returned; | |
5474 | int name_len; | |
5475 | ||
b6b38f70 | 5476 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5477 | |
5478 | SetAttrLgcyRetry: | |
5479 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5480 | (void **) &pSMBr); | |
5481 | if (rc) | |
5482 | return rc; | |
5483 | ||
5484 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5485 | name_len = | |
50c2f753 | 5486 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5487 | PATH_MAX, nls_codepage); |
5488 | name_len++; /* trailing null */ | |
5489 | name_len *= 2; | |
50c2f753 | 5490 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5491 | name_len = strnlen(fileName, PATH_MAX); |
5492 | name_len++; /* trailing null */ | |
5493 | strncpy(pSMB->fileName, fileName, name_len); | |
5494 | } | |
5495 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5496 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5497 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5498 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5499 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5500 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5501 | if (rc) |
b6b38f70 | 5502 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5503 | |
5504 | cifs_buf_release(pSMB); | |
5505 | ||
5506 | if (rc == -EAGAIN) | |
5507 | goto SetAttrLgcyRetry; | |
5508 | ||
5509 | return rc; | |
5510 | } | |
5511 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5512 | ||
654cf14a JL |
5513 | static void |
5514 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5515 | const struct cifs_unix_set_info_args *args) | |
5516 | { | |
5517 | u64 mode = args->mode; | |
5518 | ||
5519 | /* | |
5520 | * Samba server ignores set of file size to zero due to bugs in some | |
5521 | * older clients, but we should be precise - we use SetFileSize to | |
5522 | * set file size and do not want to truncate file size to zero | |
25985edc | 5523 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5524 | * zero instead of -1 here |
5525 | */ | |
5526 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5527 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5528 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5529 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5530 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5531 | data_offset->Uid = cpu_to_le64(args->uid); | |
5532 | data_offset->Gid = cpu_to_le64(args->gid); | |
5533 | /* better to leave device as zero when it is */ | |
5534 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5535 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5536 | data_offset->Permissions = cpu_to_le64(mode); | |
5537 | ||
5538 | if (S_ISREG(mode)) | |
5539 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5540 | else if (S_ISDIR(mode)) | |
5541 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5542 | else if (S_ISLNK(mode)) | |
5543 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5544 | else if (S_ISCHR(mode)) | |
5545 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5546 | else if (S_ISBLK(mode)) | |
5547 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5548 | else if (S_ISFIFO(mode)) | |
5549 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5550 | else if (S_ISSOCK(mode)) | |
5551 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5552 | } | |
5553 | ||
3bbeeb3c JL |
5554 | int |
5555 | CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon, | |
5556 | const struct cifs_unix_set_info_args *args, | |
5557 | u16 fid, u32 pid_of_opener) | |
5558 | { | |
5559 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5560 | FILE_UNIX_BASIC_INFO *data_offset; | |
5561 | int rc = 0; | |
5562 | u16 params, param_offset, offset, byte_count, count; | |
5563 | ||
b6b38f70 | 5564 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5565 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5566 | ||
5567 | if (rc) | |
5568 | return rc; | |
5569 | ||
5570 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5571 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5572 | ||
5573 | params = 6; | |
5574 | pSMB->MaxSetupCount = 0; | |
5575 | pSMB->Reserved = 0; | |
5576 | pSMB->Flags = 0; | |
5577 | pSMB->Timeout = 0; | |
5578 | pSMB->Reserved2 = 0; | |
5579 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5580 | offset = param_offset + params; | |
5581 | ||
5582 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5583 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5584 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5585 | ||
5586 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5587 | /* BB find max SMB PDU from sess */ | |
5588 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5589 | pSMB->SetupCount = 1; | |
5590 | pSMB->Reserved3 = 0; | |
5591 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5592 | byte_count = 3 /* pad */ + params + count; | |
5593 | pSMB->DataCount = cpu_to_le16(count); | |
5594 | pSMB->ParameterCount = cpu_to_le16(params); | |
5595 | pSMB->TotalDataCount = pSMB->DataCount; | |
5596 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5597 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5598 | pSMB->DataOffset = cpu_to_le16(offset); | |
5599 | pSMB->Fid = fid; | |
5600 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5601 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5602 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5603 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5604 | ||
5605 | cifs_fill_unix_set_info(data_offset, args); | |
5606 | ||
5607 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5608 | if (rc) | |
b6b38f70 | 5609 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5610 | |
5611 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5612 | since file handle passed in no longer valid */ | |
5613 | ||
5614 | return rc; | |
5615 | } | |
5616 | ||
1da177e4 | 5617 | int |
01ea95e3 JL |
5618 | CIFSSMBUnixSetPathInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
5619 | const struct cifs_unix_set_info_args *args, | |
5620 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5621 | { |
5622 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5623 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5624 | int name_len; | |
5625 | int rc = 0; | |
5626 | int bytes_returned = 0; | |
5627 | FILE_UNIX_BASIC_INFO *data_offset; | |
5628 | __u16 params, param_offset, offset, count, byte_count; | |
5629 | ||
b6b38f70 | 5630 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5631 | setPermsRetry: |
5632 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5633 | (void **) &pSMBr); | |
5634 | if (rc) | |
5635 | return rc; | |
5636 | ||
5637 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5638 | name_len = | |
50c2f753 | 5639 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5640 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5641 | name_len++; /* trailing null */ |
5642 | name_len *= 2; | |
3e87d803 | 5643 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5644 | name_len = strnlen(fileName, PATH_MAX); |
5645 | name_len++; /* trailing null */ | |
5646 | strncpy(pSMB->FileName, fileName, name_len); | |
5647 | } | |
5648 | ||
5649 | params = 6 + name_len; | |
26f57364 | 5650 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5651 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5652 | /* BB find max SMB PDU from sess structure BB */ |
5653 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5654 | pSMB->MaxSetupCount = 0; |
5655 | pSMB->Reserved = 0; | |
5656 | pSMB->Flags = 0; | |
5657 | pSMB->Timeout = 0; | |
5658 | pSMB->Reserved2 = 0; | |
5659 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5660 | InformationLevel) - 4; |
1da177e4 LT |
5661 | offset = param_offset + params; |
5662 | data_offset = | |
5663 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5664 | offset); | |
5665 | memset(data_offset, 0, count); | |
5666 | pSMB->DataOffset = cpu_to_le16(offset); | |
5667 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5668 | pSMB->SetupCount = 1; | |
5669 | pSMB->Reserved3 = 0; | |
5670 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5671 | byte_count = 3 /* pad */ + params + count; | |
5672 | pSMB->ParameterCount = cpu_to_le16(params); | |
5673 | pSMB->DataCount = cpu_to_le16(count); | |
5674 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5675 | pSMB->TotalDataCount = pSMB->DataCount; | |
5676 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5677 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5678 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5679 | |
654cf14a | 5680 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5681 | |
5682 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5683 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5684 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5685 | if (rc) |
b6b38f70 | 5686 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5687 | |
0d817bc0 | 5688 | cifs_buf_release(pSMB); |
1da177e4 LT |
5689 | if (rc == -EAGAIN) |
5690 | goto setPermsRetry; | |
5691 | return rc; | |
5692 | } | |
5693 | ||
1da177e4 | 5694 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5695 | /* |
5696 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5697 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5698 | * it looks for that attribute name and stuffs that value into the EAData | |
5699 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5700 | * buffer. In both cases, the return value is either the length of the | |
5701 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5702 | * the data isn't copied to it, but the length is returned. | |
5703 | */ | |
1da177e4 LT |
5704 | ssize_t |
5705 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
31c0519f JL |
5706 | const unsigned char *searchName, const unsigned char *ea_name, |
5707 | char *EAData, size_t buf_size, | |
5708 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5709 | { |
5710 | /* BB assumes one setup word */ | |
5711 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5712 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5713 | int rc = 0; | |
5714 | int bytes_returned; | |
6e462b9f | 5715 | int list_len; |
f0d3868b | 5716 | struct fealist *ea_response_data; |
50c2f753 SF |
5717 | struct fea *temp_fea; |
5718 | char *temp_ptr; | |
0cd126b5 | 5719 | char *end_of_smb; |
f0d3868b | 5720 | __u16 params, byte_count, data_offset; |
1da177e4 | 5721 | |
b6b38f70 | 5722 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5723 | QAllEAsRetry: |
5724 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5725 | (void **) &pSMBr); | |
5726 | if (rc) | |
5727 | return rc; | |
5728 | ||
5729 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5730 | list_len = |
50c2f753 | 5731 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5732 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5733 | list_len++; /* trailing null */ |
5734 | list_len *= 2; | |
1da177e4 | 5735 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5736 | list_len = strnlen(searchName, PATH_MAX); |
5737 | list_len++; /* trailing null */ | |
5738 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5739 | } |
5740 | ||
6e462b9f | 5741 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5742 | pSMB->TotalDataCount = 0; |
5743 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5744 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5745 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5746 | pSMB->MaxSetupCount = 0; |
5747 | pSMB->Reserved = 0; | |
5748 | pSMB->Flags = 0; | |
5749 | pSMB->Timeout = 0; | |
5750 | pSMB->Reserved2 = 0; | |
5751 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5752 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5753 | pSMB->DataCount = 0; |
5754 | pSMB->DataOffset = 0; | |
5755 | pSMB->SetupCount = 1; | |
5756 | pSMB->Reserved3 = 0; | |
5757 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5758 | byte_count = params + 1 /* pad */ ; | |
5759 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5760 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5761 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5762 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5763 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5764 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5765 | ||
5766 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5767 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5768 | if (rc) { | |
b6b38f70 | 5769 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5770 | goto QAllEAsOut; |
5771 | } | |
1da177e4 | 5772 | |
f0d3868b JL |
5773 | |
5774 | /* BB also check enough total bytes returned */ | |
5775 | /* BB we need to improve the validity checking | |
5776 | of these trans2 responses */ | |
5777 | ||
5778 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5779 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5780 | rc = -EIO; /* bad smb */ |
5781 | goto QAllEAsOut; | |
5782 | } | |
5783 | ||
5784 | /* check that length of list is not more than bcc */ | |
5785 | /* check that each entry does not go beyond length | |
5786 | of list */ | |
5787 | /* check that each element of each entry does not | |
5788 | go beyond end of list */ | |
5789 | /* validate_trans2_offsets() */ | |
5790 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5791 | ||
5792 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5793 | ea_response_data = (struct fealist *) | |
5794 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5795 | ||
6e462b9f | 5796 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5797 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5798 | if (list_len <= 8) { |
b6b38f70 | 5799 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5800 | goto QAllEAsOut; |
5801 | } | |
5802 | ||
0cd126b5 | 5803 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5804 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5805 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 5806 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5807 | rc = -EIO; |
5808 | goto QAllEAsOut; | |
5809 | } | |
5810 | ||
f0d3868b | 5811 | /* account for ea list len */ |
6e462b9f | 5812 | list_len -= 4; |
f0d3868b JL |
5813 | temp_fea = ea_response_data->list; |
5814 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5815 | while (list_len > 0) { |
122ca007 | 5816 | unsigned int name_len; |
f0d3868b | 5817 | __u16 value_len; |
0cd126b5 | 5818 | |
6e462b9f | 5819 | list_len -= 4; |
f0d3868b | 5820 | temp_ptr += 4; |
0cd126b5 JL |
5821 | /* make sure we can read name_len and value_len */ |
5822 | if (list_len < 0) { | |
b6b38f70 | 5823 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5824 | rc = -EIO; |
5825 | goto QAllEAsOut; | |
5826 | } | |
5827 | ||
5828 | name_len = temp_fea->name_len; | |
5829 | value_len = le16_to_cpu(temp_fea->value_len); | |
5830 | list_len -= name_len + 1 + value_len; | |
5831 | if (list_len < 0) { | |
b6b38f70 | 5832 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5833 | rc = -EIO; |
5834 | goto QAllEAsOut; | |
5835 | } | |
5836 | ||
31c0519f JL |
5837 | if (ea_name) { |
5838 | if (strncmp(ea_name, temp_ptr, name_len) == 0) { | |
5839 | temp_ptr += name_len + 1; | |
5840 | rc = value_len; | |
5841 | if (buf_size == 0) | |
5842 | goto QAllEAsOut; | |
5843 | if ((size_t)value_len > buf_size) { | |
5844 | rc = -ERANGE; | |
5845 | goto QAllEAsOut; | |
5846 | } | |
5847 | memcpy(EAData, temp_ptr, value_len); | |
5848 | goto QAllEAsOut; | |
5849 | } | |
f0d3868b | 5850 | } else { |
31c0519f JL |
5851 | /* account for prefix user. and trailing null */ |
5852 | rc += (5 + 1 + name_len); | |
5853 | if (rc < (int) buf_size) { | |
5854 | memcpy(EAData, "user.", 5); | |
5855 | EAData += 5; | |
5856 | memcpy(EAData, temp_ptr, name_len); | |
5857 | EAData += name_len; | |
5858 | /* null terminate name */ | |
5859 | *EAData = 0; | |
5860 | ++EAData; | |
5861 | } else if (buf_size == 0) { | |
5862 | /* skip copy - calc size only */ | |
5863 | } else { | |
5864 | /* stop before overrun buffer */ | |
5865 | rc = -ERANGE; | |
5866 | break; | |
5867 | } | |
1da177e4 | 5868 | } |
0cd126b5 | 5869 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5870 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5871 | } |
f0d3868b | 5872 | |
31c0519f JL |
5873 | /* didn't find the named attribute */ |
5874 | if (ea_name) | |
5875 | rc = -ENODATA; | |
5876 | ||
f0d3868b | 5877 | QAllEAsOut: |
0d817bc0 | 5878 | cifs_buf_release(pSMB); |
1da177e4 LT |
5879 | if (rc == -EAGAIN) |
5880 | goto QAllEAsRetry; | |
5881 | ||
5882 | return (ssize_t)rc; | |
5883 | } | |
5884 | ||
1da177e4 LT |
5885 | int |
5886 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5887 | const char *ea_name, const void *ea_value, |
5888 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5889 | int remap) | |
1da177e4 LT |
5890 | { |
5891 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5892 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5893 | struct fealist *parm_data; | |
5894 | int name_len; | |
5895 | int rc = 0; | |
5896 | int bytes_returned = 0; | |
5897 | __u16 params, param_offset, byte_count, offset, count; | |
5898 | ||
b6b38f70 | 5899 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5900 | SetEARetry: |
5901 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5902 | (void **) &pSMBr); | |
5903 | if (rc) | |
5904 | return rc; | |
5905 | ||
5906 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5907 | name_len = | |
50c2f753 | 5908 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5909 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5910 | name_len++; /* trailing null */ |
5911 | name_len *= 2; | |
50c2f753 | 5912 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5913 | name_len = strnlen(fileName, PATH_MAX); |
5914 | name_len++; /* trailing null */ | |
5915 | strncpy(pSMB->FileName, fileName, name_len); | |
5916 | } | |
5917 | ||
5918 | params = 6 + name_len; | |
5919 | ||
5920 | /* done calculating parms using name_len of file name, | |
5921 | now use name_len to calculate length of ea name | |
5922 | we are going to create in the inode xattrs */ | |
790fe579 | 5923 | if (ea_name == NULL) |
1da177e4 LT |
5924 | name_len = 0; |
5925 | else | |
50c2f753 | 5926 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5927 | |
dae5dbdb | 5928 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5929 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5930 | /* BB find max SMB PDU from sess */ |
5931 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5932 | pSMB->MaxSetupCount = 0; |
5933 | pSMB->Reserved = 0; | |
5934 | pSMB->Flags = 0; | |
5935 | pSMB->Timeout = 0; | |
5936 | pSMB->Reserved2 = 0; | |
5937 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5938 | InformationLevel) - 4; |
1da177e4 LT |
5939 | offset = param_offset + params; |
5940 | pSMB->InformationLevel = | |
5941 | cpu_to_le16(SMB_SET_FILE_EA); | |
5942 | ||
5943 | parm_data = | |
5944 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5945 | offset); | |
5946 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5947 | pSMB->DataOffset = cpu_to_le16(offset); | |
5948 | pSMB->SetupCount = 1; | |
5949 | pSMB->Reserved3 = 0; | |
5950 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5951 | byte_count = 3 /* pad */ + params + count; | |
5952 | pSMB->DataCount = cpu_to_le16(count); | |
5953 | parm_data->list_len = cpu_to_le32(count); | |
5954 | parm_data->list[0].EA_flags = 0; | |
5955 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5956 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5957 | /* EA names are always ASCII */ |
790fe579 | 5958 | if (ea_name) |
50c2f753 | 5959 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5960 | parm_data->list[0].name[name_len] = 0; |
5961 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5962 | /* caller ensures that ea_value_len is less than 64K but | |
5963 | we need to ensure that it fits within the smb */ | |
5964 | ||
50c2f753 SF |
5965 | /*BB add length check to see if it would fit in |
5966 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5967 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5968 | if (ea_value_len) | |
50c2f753 SF |
5969 | memcpy(parm_data->list[0].name+name_len+1, |
5970 | ea_value, ea_value_len); | |
1da177e4 LT |
5971 | |
5972 | pSMB->TotalDataCount = pSMB->DataCount; | |
5973 | pSMB->ParameterCount = cpu_to_le16(params); | |
5974 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5975 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5976 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5977 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5978 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5979 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5980 | if (rc) |
b6b38f70 | 5981 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5982 | |
5983 | cifs_buf_release(pSMB); | |
5984 | ||
5985 | if (rc == -EAGAIN) | |
5986 | goto SetEARetry; | |
5987 | ||
5988 | return rc; | |
5989 | } | |
1da177e4 | 5990 | #endif |
0eff0e26 SF |
5991 | |
5992 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
5993 | /* | |
5994 | * Years ago the kernel added a "dnotify" function for Samba server, | |
5995 | * to allow network clients (such as Windows) to display updated | |
5996 | * lists of files in directory listings automatically when | |
5997 | * files are added by one user when another user has the | |
5998 | * same directory open on their desktop. The Linux cifs kernel | |
5999 | * client hooked into the kernel side of this interface for | |
6000 | * the same reason, but ironically when the VFS moved from | |
6001 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6002 | * network file system clients (the most obvious use case | |
6003 | * for notify interfaces is when multiple users can update | |
6004 | * the contents of the same directory - exactly what network | |
6005 | * file systems can do) although the server (Samba) could | |
6006 | * still use it. For the short term we leave the worker | |
6007 | * function ifdeffed out (below) until inotify is fixed | |
6008 | * in the VFS to make it easier to plug in network file | |
6009 | * system clients. If inotify turns out to be permanently | |
6010 | * incompatible for network fs clients, we could instead simply | |
6011 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6012 | */ | |
6013 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, | |
6014 | const int notify_subdirs, const __u16 netfid, | |
6015 | __u32 filter, struct file *pfile, int multishot, | |
6016 | const struct nls_table *nls_codepage) | |
6017 | { | |
6018 | int rc = 0; | |
6019 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6020 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6021 | struct dir_notify_req *dnotify_req; | |
6022 | int bytes_returned; | |
6023 | ||
6024 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6025 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6026 | (void **) &pSMBr); | |
6027 | if (rc) | |
6028 | return rc; | |
6029 | ||
6030 | pSMB->TotalParameterCount = 0 ; | |
6031 | pSMB->TotalDataCount = 0; | |
6032 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
6033 | /* BB find exact data count max from sess structure BB */ | |
6034 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
6035 | /* BB VERIFY verify which is correct for above BB */ | |
6036 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
6037 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
6038 | ||
6039 | pSMB->MaxSetupCount = 4; | |
6040 | pSMB->Reserved = 0; | |
6041 | pSMB->ParameterOffset = 0; | |
6042 | pSMB->DataCount = 0; | |
6043 | pSMB->DataOffset = 0; | |
6044 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6045 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6046 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6047 | if (notify_subdirs) | |
6048 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6049 | pSMB->Reserved2 = 0; | |
6050 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6051 | pSMB->Fid = netfid; /* file handle always le */ | |
6052 | pSMB->ByteCount = 0; | |
6053 | ||
6054 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6055 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6056 | CIFS_ASYNC_OP); | |
6057 | if (rc) { | |
6058 | cFYI(1, "Error in Notify = %d", rc); | |
6059 | } else { | |
6060 | /* Add file to outstanding requests */ | |
6061 | /* BB change to kmem cache alloc */ | |
6062 | dnotify_req = kmalloc( | |
6063 | sizeof(struct dir_notify_req), | |
6064 | GFP_KERNEL); | |
6065 | if (dnotify_req) { | |
6066 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6067 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6068 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6069 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6070 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6071 | dnotify_req->netfid = netfid; | |
6072 | dnotify_req->pfile = pfile; | |
6073 | dnotify_req->filter = filter; | |
6074 | dnotify_req->multishot = multishot; | |
6075 | spin_lock(&GlobalMid_Lock); | |
6076 | list_add_tail(&dnotify_req->lhead, | |
6077 | &GlobalDnotifyReqList); | |
6078 | spin_unlock(&GlobalMid_Lock); | |
6079 | } else | |
6080 | rc = -ENOMEM; | |
6081 | } | |
6082 | cifs_buf_release(pSMB); | |
6083 | return rc; | |
6084 | } | |
6085 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |