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Commit | Line | Data |
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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 */ | |
96daf2b0 | 88 | static void mark_open_files_invalid(struct cifs_tcon *pTcon) |
1da177e4 LT |
89 | { |
90 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
91 | struct list_head *tmp; |
92 | struct list_head *tmp1; | |
1da177e4 LT |
93 | |
94 | /* list all files open on tree connection and mark them invalid */ | |
4477288a | 95 | spin_lock(&cifs_file_list_lock); |
1da177e4 | 96 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
790fe579 | 97 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 98 | open_file->invalidHandle = true; |
3bc303c2 | 99 | open_file->oplock_break_cancelled = true; |
1da177e4 | 100 | } |
4477288a | 101 | spin_unlock(&cifs_file_list_lock); |
09d1db5c SF |
102 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
103 | to this tcon */ | |
1da177e4 LT |
104 | } |
105 | ||
9162ab20 JL |
106 | /* reconnect the socket, tcon, and smb session if needed */ |
107 | static int | |
96daf2b0 | 108 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 109 | { |
c4a5534a | 110 | int rc; |
96daf2b0 | 111 | struct cifs_ses *ses; |
9162ab20 JL |
112 | struct TCP_Server_Info *server; |
113 | struct nls_table *nls_codepage; | |
114 | ||
115 | /* | |
116 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
117 | * tcp and smb session status done differently for those three - in the | |
118 | * calling routine | |
119 | */ | |
120 | if (!tcon) | |
121 | return 0; | |
122 | ||
123 | ses = tcon->ses; | |
124 | server = ses->server; | |
125 | ||
126 | /* | |
127 | * only tree disconnect, open, and write, (and ulogoff which does not | |
128 | * have tcon) are allowed as we start force umount | |
129 | */ | |
130 | if (tcon->tidStatus == CifsExiting) { | |
131 | if (smb_command != SMB_COM_WRITE_ANDX && | |
132 | smb_command != SMB_COM_OPEN_ANDX && | |
133 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
134 | cFYI(1, "can not send cmd %d while umounting", |
135 | smb_command); | |
9162ab20 JL |
136 | return -ENODEV; |
137 | } | |
138 | } | |
139 | ||
9162ab20 JL |
140 | /* |
141 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
142 | * greater than cifs socket timeout which is 7 seconds | |
143 | */ | |
144 | while (server->tcpStatus == CifsNeedReconnect) { | |
145 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 146 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 147 | |
fd88ce93 | 148 | /* are we still trying to reconnect? */ |
9162ab20 JL |
149 | if (server->tcpStatus != CifsNeedReconnect) |
150 | break; | |
151 | ||
152 | /* | |
153 | * on "soft" mounts we wait once. Hard mounts keep | |
154 | * retrying until process is killed or server comes | |
155 | * back on-line | |
156 | */ | |
d402539b | 157 | if (!tcon->retry) { |
b6b38f70 | 158 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
159 | return -EHOSTDOWN; |
160 | } | |
161 | } | |
162 | ||
163 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
164 | return 0; | |
165 | ||
166 | nls_codepage = load_nls_default(); | |
167 | ||
168 | /* | |
169 | * need to prevent multiple threads trying to simultaneously | |
170 | * reconnect the same SMB session | |
171 | */ | |
d7b619cf | 172 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
173 | rc = cifs_negotiate_protocol(0, ses); |
174 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
175 | rc = cifs_setup_session(0, ses, nls_codepage); |
176 | ||
177 | /* do we need to reconnect tcon? */ | |
178 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 179 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
180 | goto out; |
181 | } | |
182 | ||
183 | mark_open_files_invalid(tcon); | |
184 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 185 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 186 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
187 | |
188 | if (rc) | |
189 | goto out; | |
190 | ||
191 | /* | |
192 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
193 | * size shrinking | |
194 | */ | |
195 | atomic_inc(&tconInfoReconnectCount); | |
196 | ||
197 | /* tell server Unix caps we support */ | |
198 | if (ses->capabilities & CAP_UNIX) | |
199 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
200 | ||
201 | /* | |
202 | * Removed call to reopen open files here. It is safer (and faster) to | |
203 | * reopen files one at a time as needed in read and write. | |
204 | * | |
205 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
206 | */ | |
207 | ||
208 | out: | |
209 | /* | |
210 | * Check if handle based operation so we know whether we can continue | |
211 | * or not without returning to caller to reset file handle | |
212 | */ | |
213 | switch (smb_command) { | |
214 | case SMB_COM_READ_ANDX: | |
215 | case SMB_COM_WRITE_ANDX: | |
216 | case SMB_COM_CLOSE: | |
217 | case SMB_COM_FIND_CLOSE2: | |
218 | case SMB_COM_LOCKING_ANDX: | |
219 | rc = -EAGAIN; | |
220 | } | |
221 | ||
222 | unload_nls(nls_codepage); | |
223 | return rc; | |
224 | } | |
225 | ||
ad7a2926 SF |
226 | /* Allocate and return pointer to an SMB request buffer, and set basic |
227 | SMB information in the SMB header. If the return code is zero, this | |
228 | function must have filled in request_buf pointer */ | |
1da177e4 | 229 | static int |
96daf2b0 | 230 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 231 | void **request_buf) |
1da177e4 | 232 | { |
f569599a | 233 | int rc; |
1da177e4 | 234 | |
9162ab20 | 235 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 236 | if (rc) |
1da177e4 LT |
237 | return rc; |
238 | ||
239 | *request_buf = cifs_small_buf_get(); | |
240 | if (*request_buf == NULL) { | |
241 | /* BB should we add a retry in here if not a writepage? */ | |
242 | return -ENOMEM; | |
243 | } | |
244 | ||
63135e08 | 245 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 246 | tcon, wct); |
1da177e4 | 247 | |
790fe579 SF |
248 | if (tcon != NULL) |
249 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 250 | |
f569599a | 251 | return 0; |
5815449d SF |
252 | } |
253 | ||
12b3b8ff | 254 | int |
50c2f753 | 255 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 256 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
257 | { |
258 | int rc; | |
50c2f753 | 259 | struct smb_hdr *buffer; |
12b3b8ff | 260 | |
5815449d | 261 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 262 | if (rc) |
12b3b8ff SF |
263 | return rc; |
264 | ||
04fdabe1 | 265 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
266 | buffer->Mid = GetNextMid(ses->server); |
267 | if (ses->capabilities & CAP_UNICODE) | |
268 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 269 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
270 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
271 | ||
272 | /* uid, tid can stay at zero as set in header assemble */ | |
273 | ||
50c2f753 | 274 | /* BB add support for turning on the signing when |
12b3b8ff SF |
275 | this function is used after 1st of session setup requests */ |
276 | ||
277 | return rc; | |
278 | } | |
1da177e4 LT |
279 | |
280 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
281 | static int | |
96daf2b0 | 282 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 283 | void **request_buf, void **response_buf) |
1da177e4 | 284 | { |
1da177e4 LT |
285 | *request_buf = cifs_buf_get(); |
286 | if (*request_buf == NULL) { | |
287 | /* BB should we add a retry in here if not a writepage? */ | |
288 | return -ENOMEM; | |
289 | } | |
290 | /* Although the original thought was we needed the response buf for */ | |
291 | /* potential retries of smb operations it turns out we can determine */ | |
292 | /* from the mid flags when the request buffer can be resent without */ | |
293 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 294 | if (response_buf) |
50c2f753 | 295 | *response_buf = *request_buf; |
1da177e4 LT |
296 | |
297 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 298 | wct); |
1da177e4 | 299 | |
790fe579 SF |
300 | if (tcon != NULL) |
301 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 302 | |
f569599a JL |
303 | return 0; |
304 | } | |
305 | ||
306 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
307 | static int | |
96daf2b0 | 308 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
309 | void **request_buf, void **response_buf) |
310 | { | |
311 | int rc; | |
312 | ||
313 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
314 | if (rc) | |
315 | return rc; | |
316 | ||
317 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
318 | } | |
319 | ||
320 | static int | |
96daf2b0 | 321 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
322 | void **request_buf, void **response_buf) |
323 | { | |
324 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
325 | return -EHOSTDOWN; | |
326 | ||
327 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
328 | } |
329 | ||
50c2f753 | 330 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 331 | { |
12df83c9 JL |
332 | unsigned int total_size; |
333 | ||
334 | /* check for plausible wct */ | |
335 | if (pSMB->hdr.WordCount < 10) | |
336 | goto vt2_err; | |
1da177e4 | 337 | |
1da177e4 | 338 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
339 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
340 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
341 | goto vt2_err; | |
342 | ||
12df83c9 JL |
343 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
344 | if (total_size >= 512) | |
345 | goto vt2_err; | |
346 | ||
fd5707e1 JL |
347 | /* check that bcc is at least as big as parms + data, and that it is |
348 | * less than negotiated smb buffer | |
349 | */ | |
12df83c9 JL |
350 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
351 | if (total_size > get_bcc(&pSMB->hdr) || | |
352 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
353 | goto vt2_err; | |
354 | ||
355 | return 0; | |
356 | vt2_err: | |
50c2f753 | 357 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 358 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 359 | return -EINVAL; |
1da177e4 | 360 | } |
690c522f | 361 | |
be8e3b00 SF |
362 | static inline void inc_rfc1001_len(void *pSMB, int count) |
363 | { | |
364 | struct smb_hdr *hdr = (struct smb_hdr *)pSMB; | |
365 | ||
366 | be32_add_cpu(&hdr->smb_buf_length, count); | |
367 | } | |
368 | ||
1da177e4 | 369 | int |
96daf2b0 | 370 | CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
371 | { |
372 | NEGOTIATE_REQ *pSMB; | |
373 | NEGOTIATE_RSP *pSMBr; | |
374 | int rc = 0; | |
375 | int bytes_returned; | |
3979877e | 376 | int i; |
50c2f753 | 377 | struct TCP_Server_Info *server; |
1da177e4 | 378 | u16 count; |
750d1151 | 379 | unsigned int secFlags; |
1da177e4 | 380 | |
790fe579 | 381 | if (ses->server) |
1da177e4 LT |
382 | server = ses->server; |
383 | else { | |
384 | rc = -EIO; | |
385 | return rc; | |
386 | } | |
387 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
388 | (void **) &pSMB, (void **) &pSMBr); | |
389 | if (rc) | |
390 | return rc; | |
750d1151 SF |
391 | |
392 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 393 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 394 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 395 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 396 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 397 | |
b6b38f70 | 398 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 399 | |
1982c344 | 400 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 401 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 402 | |
100c1ddc | 403 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 404 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 405 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 406 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 407 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 408 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
409 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
410 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 411 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
412 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
413 | } | |
50c2f753 | 414 | |
3979877e | 415 | count = 0; |
50c2f753 | 416 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
417 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
418 | count += strlen(protocols[i].name) + 1; | |
419 | /* null at end of source and target buffers anyway */ | |
420 | } | |
be8e3b00 | 421 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
422 | pSMB->ByteCount = cpu_to_le16(count); |
423 | ||
424 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
425 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 426 | if (rc != 0) |
254e55ed SF |
427 | goto neg_err_exit; |
428 | ||
9bf67e51 JL |
429 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
430 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 431 | /* Check wct = 1 error case */ |
9bf67e51 | 432 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 433 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 434 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
435 | could not negotiate a common dialect */ |
436 | rc = -EOPNOTSUPP; | |
437 | goto neg_err_exit; | |
50c2f753 | 438 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 439 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
440 | && ((server->dialect == LANMAN_PROT) |
441 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 442 | __s16 tmp; |
50c2f753 | 443 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 444 | |
790fe579 | 445 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 446 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
447 | server->secType = LANMAN; |
448 | else { | |
b6b38f70 JP |
449 | cERROR(1, "mount failed weak security disabled" |
450 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
451 | rc = -EOPNOTSUPP; |
452 | goto neg_err_exit; | |
50c2f753 | 453 | } |
96daf2b0 | 454 | server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode); |
254e55ed | 455 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); |
c974befa | 456 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
eca6acf9 | 457 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
458 | /* even though we do not use raw we might as well set this |
459 | accurately, in case we ever find a need for it */ | |
790fe579 | 460 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 461 | server->max_rw = 0xFF00; |
254e55ed SF |
462 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
463 | } else { | |
eca6acf9 | 464 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
465 | server->capabilities = CAP_MPX_MODE; |
466 | } | |
b815f1e5 | 467 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 468 | if (tmp == -1) { |
25ee4a98 SF |
469 | /* OS/2 often does not set timezone therefore |
470 | * we must use server time to calc time zone. | |
b815f1e5 SF |
471 | * Could deviate slightly from the right zone. |
472 | * Smallest defined timezone difference is 15 minutes | |
473 | * (i.e. Nepal). Rounding up/down is done to match | |
474 | * this requirement. | |
25ee4a98 | 475 | */ |
b815f1e5 | 476 | int val, seconds, remain, result; |
25ee4a98 SF |
477 | struct timespec ts, utc; |
478 | utc = CURRENT_TIME; | |
c4a2c08d JL |
479 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
480 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 481 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 482 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 483 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 484 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 485 | seconds = abs(val); |
947a5067 | 486 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 487 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 488 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 489 | result += MIN_TZ_ADJ; |
790fe579 | 490 | if (val < 0) |
ad7a2926 | 491 | result = -result; |
b815f1e5 | 492 | server->timeAdj = result; |
25ee4a98 | 493 | } else { |
b815f1e5 SF |
494 | server->timeAdj = (int)tmp; |
495 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 496 | } |
b6b38f70 | 497 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 498 | |
3979877e | 499 | |
254e55ed | 500 | /* BB get server time for time conversions and add |
50c2f753 | 501 | code to use it and timezone since this is not UTC */ |
3979877e | 502 | |
50c2f753 | 503 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 504 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 505 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 506 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 507 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
508 | rc = -EIO; /* need cryptkey unless plain text */ |
509 | goto neg_err_exit; | |
510 | } | |
3979877e | 511 | |
f19159dc | 512 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
513 | /* we will not end up setting signing flags - as no signing |
514 | was in LANMAN and server did not return the flags on */ | |
515 | goto signing_check; | |
7c7b25bc | 516 | #else /* weak security disabled */ |
790fe579 | 517 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
518 | cERROR(1, "mount failed, cifs module not built " |
519 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 520 | rc = -EOPNOTSUPP; |
7c7b25bc | 521 | #endif /* WEAK_PW_HASH */ |
254e55ed | 522 | goto neg_err_exit; |
790fe579 | 523 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
524 | /* unknown wct */ |
525 | rc = -EOPNOTSUPP; | |
526 | goto neg_err_exit; | |
527 | } | |
528 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
529 | server->sec_mode = pSMBr->SecurityMode; |
530 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 531 | cFYI(1, "share mode security"); |
bdc4bf6e | 532 | |
96daf2b0 | 533 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 534 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 535 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 536 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
537 | cERROR(1, "Server requests plain text password" |
538 | " but client support disabled"); | |
9312f675 | 539 | |
790fe579 | 540 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 541 | server->secType = NTLMv2; |
790fe579 | 542 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 543 | server->secType = NTLM; |
790fe579 | 544 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 545 | server->secType = NTLMv2; |
a013689d SF |
546 | else if (secFlags & CIFSSEC_MAY_KRB5) |
547 | server->secType = Kerberos; | |
ac683924 | 548 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 549 | server->secType = RawNTLMSSP; |
a013689d SF |
550 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
551 | server->secType = LANMAN; | |
a013689d SF |
552 | else { |
553 | rc = -EOPNOTSUPP; | |
b6b38f70 | 554 | cERROR(1, "Invalid security type"); |
a013689d SF |
555 | goto neg_err_exit; |
556 | } | |
557 | /* else ... any others ...? */ | |
254e55ed SF |
558 | |
559 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
560 | little endian */ | |
561 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
562 | /* probably no need to store and check maxvcs */ | |
c974befa | 563 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 564 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 565 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 566 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
567 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
568 | server->timeAdj *= 60; | |
254e55ed | 569 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 570 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 571 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
572 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
573 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
574 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 575 | /* decode security blob */ |
820a803f | 576 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 577 | if (count < 16) { |
254e55ed | 578 | rc = -EIO; |
e187e44e JL |
579 | goto neg_err_exit; |
580 | } | |
3f9bcca7 | 581 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 582 | if (server->srv_count > 1) { |
3f9bcca7 | 583 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
584 | if (memcmp(server->server_GUID, |
585 | pSMBr->u.extended_response. | |
586 | GUID, 16) != 0) { | |
b6b38f70 | 587 | cFYI(1, "server UID changed"); |
254e55ed | 588 | memcpy(server->server_GUID, |
e187e44e JL |
589 | pSMBr->u.extended_response.GUID, |
590 | 16); | |
591 | } | |
e7ddee90 | 592 | } else { |
3f9bcca7 | 593 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
594 | memcpy(server->server_GUID, |
595 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 596 | } |
e187e44e JL |
597 | |
598 | if (count == 16) { | |
599 | server->secType = RawNTLMSSP; | |
254e55ed SF |
600 | } else { |
601 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
602 | SecurityBlob, count - 16, |
603 | server); | |
ef571cad | 604 | if (rc == 1) |
e545937a | 605 | rc = 0; |
ef571cad | 606 | else |
254e55ed | 607 | rc = -EINVAL; |
2b149f11 SP |
608 | if (server->secType == Kerberos) { |
609 | if (!server->sec_kerberos && | |
610 | !server->sec_mskerberos) | |
611 | rc = -EOPNOTSUPP; | |
612 | } else if (server->secType == RawNTLMSSP) { | |
613 | if (!server->sec_ntlmssp) | |
614 | rc = -EOPNOTSUPP; | |
615 | } else | |
616 | rc = -EOPNOTSUPP; | |
1da177e4 | 617 | } |
96daf2b0 | 618 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
619 | rc = -EIO; /* no crypt key only if plain text pwd */ |
620 | goto neg_err_exit; | |
254e55ed SF |
621 | } else |
622 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
623 | ||
6344a423 | 624 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 625 | signing_check: |
6344a423 | 626 | #endif |
762e5ab7 SF |
627 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
628 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
629 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 630 | cFYI(1, "Signing disabled"); |
96daf2b0 | 631 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 632 | cERROR(1, "Server requires " |
7111d214 | 633 | "packet signing to be enabled in " |
b6b38f70 | 634 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
635 | rc = -EOPNOTSUPP; |
636 | } | |
96daf2b0 | 637 | server->sec_mode &= |
254e55ed | 638 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
639 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
640 | /* signing required */ | |
b6b38f70 | 641 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 642 | if ((server->sec_mode & |
762e5ab7 | 643 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 644 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 645 | rc = -EOPNOTSUPP; |
762e5ab7 | 646 | } else |
96daf2b0 | 647 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
648 | } else { |
649 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
650 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
651 | server->sec_mode &= | |
254e55ed | 652 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 653 | } |
50c2f753 SF |
654 | |
655 | neg_err_exit: | |
4a6d87f1 | 656 | cifs_buf_release(pSMB); |
254e55ed | 657 | |
b6b38f70 | 658 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
659 | return rc; |
660 | } | |
661 | ||
662 | int | |
96daf2b0 | 663 | CIFSSMBTDis(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
664 | { |
665 | struct smb_hdr *smb_buffer; | |
1da177e4 | 666 | int rc = 0; |
1da177e4 | 667 | |
b6b38f70 | 668 | cFYI(1, "In tree disconnect"); |
1da177e4 | 669 | |
f1987b44 JL |
670 | /* BB: do we need to check this? These should never be NULL. */ |
671 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
672 | return -EIO; | |
1da177e4 | 673 | |
f1987b44 JL |
674 | /* |
675 | * No need to return error on this operation if tid invalidated and | |
676 | * closed on server already e.g. due to tcp session crashing. Also, | |
677 | * the tcon is no longer on the list, so no need to take lock before | |
678 | * checking this. | |
679 | */ | |
268875b9 | 680 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 681 | return 0; |
1da177e4 | 682 | |
50c2f753 | 683 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 684 | (void **)&smb_buffer); |
f1987b44 | 685 | if (rc) |
1da177e4 | 686 | return rc; |
133672ef SF |
687 | |
688 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 689 | if (rc) |
b6b38f70 | 690 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 691 | |
50c2f753 | 692 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 693 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
694 | if (rc == -EAGAIN) |
695 | rc = 0; | |
696 | ||
697 | return rc; | |
698 | } | |
699 | ||
766fdbb5 JL |
700 | /* |
701 | * This is a no-op for now. We're not really interested in the reply, but | |
702 | * rather in the fact that the server sent one and that server->lstrp | |
703 | * gets updated. | |
704 | * | |
705 | * FIXME: maybe we should consider checking that the reply matches request? | |
706 | */ | |
707 | static void | |
708 | cifs_echo_callback(struct mid_q_entry *mid) | |
709 | { | |
710 | struct TCP_Server_Info *server = mid->callback_data; | |
711 | ||
712 | DeleteMidQEntry(mid); | |
713 | atomic_dec(&server->inFlight); | |
714 | wake_up(&server->request_q); | |
715 | } | |
716 | ||
717 | int | |
718 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
719 | { | |
720 | ECHO_REQ *smb; | |
721 | int rc = 0; | |
fcc31cb6 | 722 | struct kvec iov; |
766fdbb5 JL |
723 | |
724 | cFYI(1, "In echo request"); | |
725 | ||
726 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
727 | if (rc) | |
728 | return rc; | |
729 | ||
730 | /* set up echo request */ | |
5443d130 | 731 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
732 | smb->hdr.WordCount = 1; |
733 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 734 | put_bcc(1, &smb->hdr); |
766fdbb5 | 735 | smb->Data[0] = 'a'; |
be8e3b00 | 736 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
737 | iov.iov_base = smb; |
738 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 739 | |
59ffd841 | 740 | rc = cifs_call_async(server, &iov, 1, cifs_echo_callback, server, true); |
766fdbb5 JL |
741 | if (rc) |
742 | cFYI(1, "Echo request failed: %d", rc); | |
743 | ||
744 | cifs_small_buf_release(smb); | |
745 | ||
746 | return rc; | |
747 | } | |
748 | ||
1da177e4 | 749 | int |
96daf2b0 | 750 | CIFSSMBLogoff(const int xid, struct cifs_ses *ses) |
1da177e4 | 751 | { |
1da177e4 LT |
752 | LOGOFF_ANDX_REQ *pSMB; |
753 | int rc = 0; | |
1da177e4 | 754 | |
b6b38f70 | 755 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 756 | |
14fbf50d JL |
757 | /* |
758 | * BB: do we need to check validity of ses and server? They should | |
759 | * always be valid since we have an active reference. If not, that | |
760 | * should probably be a BUG() | |
761 | */ | |
762 | if (!ses || !ses->server) | |
3b795210 SF |
763 | return -EIO; |
764 | ||
d7b619cf | 765 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
766 | if (ses->need_reconnect) |
767 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
768 | already closed due to reconnect */ | |
1da177e4 LT |
769 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
770 | if (rc) { | |
d7b619cf | 771 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
772 | return rc; |
773 | } | |
774 | ||
3b795210 | 775 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 776 | |
96daf2b0 | 777 | if (ses->server->sec_mode & |
1da177e4 LT |
778 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
779 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
780 | |
781 | pSMB->hdr.Uid = ses->Suid; | |
782 | ||
783 | pSMB->AndXCommand = 0xFF; | |
133672ef | 784 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 785 | session_already_dead: |
d7b619cf | 786 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
787 | |
788 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 789 | since server closed smb session, no sense reporting |
1da177e4 LT |
790 | error */ |
791 | if (rc == -EAGAIN) | |
792 | rc = 0; | |
793 | return rc; | |
794 | } | |
795 | ||
2d785a50 | 796 | int |
96daf2b0 | 797 | CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
2d785a50 SF |
798 | __u16 type, const struct nls_table *nls_codepage, int remap) |
799 | { | |
800 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
801 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
802 | struct unlink_psx_rq *pRqD; | |
803 | int name_len; | |
804 | int rc = 0; | |
805 | int bytes_returned = 0; | |
806 | __u16 params, param_offset, offset, byte_count; | |
807 | ||
b6b38f70 | 808 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
809 | PsxDelete: |
810 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
811 | (void **) &pSMBr); | |
812 | if (rc) | |
813 | return rc; | |
814 | ||
815 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
816 | name_len = | |
817 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
818 | PATH_MAX, nls_codepage, remap); | |
819 | name_len++; /* trailing null */ | |
820 | name_len *= 2; | |
821 | } else { /* BB add path length overrun check */ | |
822 | name_len = strnlen(fileName, PATH_MAX); | |
823 | name_len++; /* trailing null */ | |
824 | strncpy(pSMB->FileName, fileName, name_len); | |
825 | } | |
826 | ||
827 | params = 6 + name_len; | |
828 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
829 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
830 | pSMB->MaxSetupCount = 0; | |
831 | pSMB->Reserved = 0; | |
832 | pSMB->Flags = 0; | |
833 | pSMB->Timeout = 0; | |
834 | pSMB->Reserved2 = 0; | |
835 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
836 | InformationLevel) - 4; | |
837 | offset = param_offset + params; | |
838 | ||
839 | /* Setup pointer to Request Data (inode type) */ | |
840 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
841 | pRqD->type = cpu_to_le16(type); | |
842 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
843 | pSMB->DataOffset = cpu_to_le16(offset); | |
844 | pSMB->SetupCount = 1; | |
845 | pSMB->Reserved3 = 0; | |
846 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
847 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
848 | ||
849 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
850 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
851 | pSMB->ParameterCount = cpu_to_le16(params); | |
852 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
853 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
854 | pSMB->Reserved4 = 0; | |
be8e3b00 | 855 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
856 | pSMB->ByteCount = cpu_to_le16(byte_count); |
857 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
858 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 859 | if (rc) |
b6b38f70 | 860 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
861 | cifs_buf_release(pSMB); |
862 | ||
863 | cifs_stats_inc(&tcon->num_deletes); | |
864 | ||
865 | if (rc == -EAGAIN) | |
866 | goto PsxDelete; | |
867 | ||
868 | return rc; | |
869 | } | |
870 | ||
1da177e4 | 871 | int |
96daf2b0 | 872 | CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
737b758c | 873 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
874 | { |
875 | DELETE_FILE_REQ *pSMB = NULL; | |
876 | DELETE_FILE_RSP *pSMBr = NULL; | |
877 | int rc = 0; | |
878 | int bytes_returned; | |
879 | int name_len; | |
880 | ||
881 | DelFileRetry: | |
882 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
883 | (void **) &pSMBr); | |
884 | if (rc) | |
885 | return rc; | |
886 | ||
887 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
888 | name_len = | |
50c2f753 | 889 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 890 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
891 | name_len++; /* trailing null */ |
892 | name_len *= 2; | |
09d1db5c | 893 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
894 | name_len = strnlen(fileName, PATH_MAX); |
895 | name_len++; /* trailing null */ | |
896 | strncpy(pSMB->fileName, fileName, name_len); | |
897 | } | |
898 | pSMB->SearchAttributes = | |
899 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
900 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 901 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
902 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
903 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
904 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 905 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 906 | if (rc) |
b6b38f70 | 907 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
908 | |
909 | cifs_buf_release(pSMB); | |
910 | if (rc == -EAGAIN) | |
911 | goto DelFileRetry; | |
912 | ||
913 | return rc; | |
914 | } | |
915 | ||
916 | int | |
96daf2b0 | 917 | CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName, |
737b758c | 918 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
919 | { |
920 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
921 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
922 | int rc = 0; | |
923 | int bytes_returned; | |
924 | int name_len; | |
925 | ||
b6b38f70 | 926 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
927 | RmDirRetry: |
928 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
929 | (void **) &pSMBr); | |
930 | if (rc) | |
931 | return rc; | |
932 | ||
933 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
934 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
935 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
936 | name_len++; /* trailing null */ |
937 | name_len *= 2; | |
09d1db5c | 938 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
939 | name_len = strnlen(dirName, PATH_MAX); |
940 | name_len++; /* trailing null */ | |
941 | strncpy(pSMB->DirName, dirName, name_len); | |
942 | } | |
943 | ||
944 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 945 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
946 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
947 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
948 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 949 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 950 | if (rc) |
b6b38f70 | 951 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
952 | |
953 | cifs_buf_release(pSMB); | |
954 | if (rc == -EAGAIN) | |
955 | goto RmDirRetry; | |
956 | return rc; | |
957 | } | |
958 | ||
959 | int | |
96daf2b0 | 960 | CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon, |
737b758c | 961 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
962 | { |
963 | int rc = 0; | |
964 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
965 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
966 | int bytes_returned; | |
967 | int name_len; | |
968 | ||
b6b38f70 | 969 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
970 | MkDirRetry: |
971 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
972 | (void **) &pSMBr); | |
973 | if (rc) | |
974 | return rc; | |
975 | ||
976 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 977 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 978 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
979 | name_len++; /* trailing null */ |
980 | name_len *= 2; | |
09d1db5c | 981 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
982 | name_len = strnlen(name, PATH_MAX); |
983 | name_len++; /* trailing null */ | |
984 | strncpy(pSMB->DirName, name, name_len); | |
985 | } | |
986 | ||
987 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 988 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
989 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
990 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
991 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 992 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 993 | if (rc) |
b6b38f70 | 994 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 995 | |
1da177e4 LT |
996 | cifs_buf_release(pSMB); |
997 | if (rc == -EAGAIN) | |
998 | goto MkDirRetry; | |
999 | return rc; | |
1000 | } | |
1001 | ||
2dd29d31 | 1002 | int |
96daf2b0 | 1003 | CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags, |
ad7a2926 | 1004 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1005 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1006 | const struct nls_table *nls_codepage, int remap) |
1007 | { | |
1008 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1009 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1010 | int name_len; | |
1011 | int rc = 0; | |
1012 | int bytes_returned = 0; | |
2dd29d31 | 1013 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1014 | OPEN_PSX_REQ *pdata; |
1015 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1016 | |
b6b38f70 | 1017 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1018 | PsxCreat: |
1019 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1020 | (void **) &pSMBr); | |
1021 | if (rc) | |
1022 | return rc; | |
1023 | ||
1024 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1025 | name_len = | |
1026 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1027 | PATH_MAX, nls_codepage, remap); | |
1028 | name_len++; /* trailing null */ | |
1029 | name_len *= 2; | |
1030 | } else { /* BB improve the check for buffer overruns BB */ | |
1031 | name_len = strnlen(name, PATH_MAX); | |
1032 | name_len++; /* trailing null */ | |
1033 | strncpy(pSMB->FileName, name, name_len); | |
1034 | } | |
1035 | ||
1036 | params = 6 + name_len; | |
1037 | count = sizeof(OPEN_PSX_REQ); | |
1038 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1039 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1040 | pSMB->MaxSetupCount = 0; | |
1041 | pSMB->Reserved = 0; | |
1042 | pSMB->Flags = 0; | |
1043 | pSMB->Timeout = 0; | |
1044 | pSMB->Reserved2 = 0; | |
1045 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1046 | InformationLevel) - 4; |
2dd29d31 | 1047 | offset = param_offset + params; |
2dd29d31 | 1048 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1049 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1050 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1051 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1052 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1053 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1054 | pSMB->DataOffset = cpu_to_le16(offset); | |
1055 | pSMB->SetupCount = 1; | |
1056 | pSMB->Reserved3 = 0; | |
1057 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1058 | byte_count = 3 /* pad */ + params + count; | |
1059 | ||
1060 | pSMB->DataCount = cpu_to_le16(count); | |
1061 | pSMB->ParameterCount = cpu_to_le16(params); | |
1062 | pSMB->TotalDataCount = pSMB->DataCount; | |
1063 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1064 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1065 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1066 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1067 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1068 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1069 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1070 | if (rc) { | |
b6b38f70 | 1071 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1072 | goto psx_create_err; |
1073 | } | |
1074 | ||
b6b38f70 | 1075 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1076 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1077 | ||
820a803f | 1078 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1079 | rc = -EIO; /* bad smb */ |
1080 | goto psx_create_err; | |
1081 | } | |
1082 | ||
1083 | /* copy return information to pRetData */ | |
50c2f753 | 1084 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1085 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1086 | |
2dd29d31 | 1087 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1088 | if (netfid) |
2dd29d31 SF |
1089 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1090 | /* Let caller know file was created so we can set the mode. */ | |
1091 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1092 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1093 | *pOplock |= CIFS_CREATE_ACTION; |
1094 | /* check to make sure response data is there */ | |
8f2376ad CG |
1095 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1096 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1097 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1098 | } else { |
820a803f | 1099 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1100 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1101 | cERROR(1, "Open response data too small"); |
8f2376ad | 1102 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1103 | goto psx_create_err; |
1104 | } | |
50c2f753 | 1105 | memcpy((char *) pRetData, |
cbac3cba | 1106 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1107 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1108 | } |
2dd29d31 SF |
1109 | |
1110 | psx_create_err: | |
1111 | cifs_buf_release(pSMB); | |
1112 | ||
65bc98b0 SF |
1113 | if (posix_flags & SMB_O_DIRECTORY) |
1114 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1115 | else | |
1116 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1117 | |
1118 | if (rc == -EAGAIN) | |
1119 | goto PsxCreat; | |
1120 | ||
50c2f753 | 1121 | return rc; |
2dd29d31 SF |
1122 | } |
1123 | ||
a9d02ad4 SF |
1124 | static __u16 convert_disposition(int disposition) |
1125 | { | |
1126 | __u16 ofun = 0; | |
1127 | ||
1128 | switch (disposition) { | |
1129 | case FILE_SUPERSEDE: | |
1130 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1131 | break; | |
1132 | case FILE_OPEN: | |
1133 | ofun = SMBOPEN_OAPPEND; | |
1134 | break; | |
1135 | case FILE_CREATE: | |
1136 | ofun = SMBOPEN_OCREATE; | |
1137 | break; | |
1138 | case FILE_OPEN_IF: | |
1139 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1140 | break; | |
1141 | case FILE_OVERWRITE: | |
1142 | ofun = SMBOPEN_OTRUNC; | |
1143 | break; | |
1144 | case FILE_OVERWRITE_IF: | |
1145 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | default: | |
b6b38f70 | 1148 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1149 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1150 | } | |
1151 | return ofun; | |
1152 | } | |
1153 | ||
35fc37d5 JL |
1154 | static int |
1155 | access_flags_to_smbopen_mode(const int access_flags) | |
1156 | { | |
1157 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1158 | ||
1159 | if (masked_flags == GENERIC_READ) | |
1160 | return SMBOPEN_READ; | |
1161 | else if (masked_flags == GENERIC_WRITE) | |
1162 | return SMBOPEN_WRITE; | |
1163 | ||
1164 | /* just go for read/write */ | |
1165 | return SMBOPEN_READWRITE; | |
1166 | } | |
1167 | ||
a9d02ad4 | 1168 | int |
96daf2b0 | 1169 | SMBLegacyOpen(const int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1170 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1171 | const int access_flags, const int create_options, __u16 *netfid, |
1172 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1173 | const struct nls_table *nls_codepage, int remap) |
1174 | { | |
1175 | int rc = -EACCES; | |
1176 | OPENX_REQ *pSMB = NULL; | |
1177 | OPENX_RSP *pSMBr = NULL; | |
1178 | int bytes_returned; | |
1179 | int name_len; | |
1180 | __u16 count; | |
1181 | ||
1182 | OldOpenRetry: | |
1183 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1184 | (void **) &pSMBr); | |
1185 | if (rc) | |
1186 | return rc; | |
1187 | ||
1188 | pSMB->AndXCommand = 0xFF; /* none */ | |
1189 | ||
1190 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1191 | count = 1; /* account for one byte pad to word boundary */ | |
1192 | name_len = | |
1193 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1194 | fileName, PATH_MAX, nls_codepage, remap); | |
1195 | name_len++; /* trailing null */ | |
1196 | name_len *= 2; | |
1197 | } else { /* BB improve check for buffer overruns BB */ | |
1198 | count = 0; /* no pad */ | |
1199 | name_len = strnlen(fileName, PATH_MAX); | |
1200 | name_len++; /* trailing null */ | |
1201 | strncpy(pSMB->fileName, fileName, name_len); | |
1202 | } | |
1203 | if (*pOplock & REQ_OPLOCK) | |
1204 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1205 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1206 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1207 | |
a9d02ad4 | 1208 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1209 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1210 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1211 | /* set file as system file if special file such | |
1212 | as fifo and server expecting SFU style and | |
1213 | no Unix extensions */ | |
1214 | ||
790fe579 SF |
1215 | if (create_options & CREATE_OPTION_SPECIAL) |
1216 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1217 | else /* BB FIXME BB */ |
1218 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1219 | |
67750fb9 JL |
1220 | if (create_options & CREATE_OPTION_READONLY) |
1221 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1222 | |
1223 | /* BB FIXME BB */ | |
50c2f753 SF |
1224 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1225 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1226 | /* BB FIXME END BB */ |
3e87d803 SF |
1227 | |
1228 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1229 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1230 | count += name_len; |
be8e3b00 | 1231 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1232 | |
1233 | pSMB->ByteCount = cpu_to_le16(count); | |
1234 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1235 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1236 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1237 | cifs_stats_inc(&tcon->num_opens); |
1238 | if (rc) { | |
b6b38f70 | 1239 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1240 | } else { |
1241 | /* BB verify if wct == 15 */ | |
1242 | ||
582d21e5 | 1243 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1244 | |
1245 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1246 | /* Let caller know file was created so we can set the mode. */ | |
1247 | /* Do we care about the CreateAction in any other cases? */ | |
1248 | /* BB FIXME BB */ | |
790fe579 | 1249 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1250 | *pOplock |= CIFS_CREATE_ACTION; */ |
1251 | /* BB FIXME END */ | |
1252 | ||
790fe579 | 1253 | if (pfile_info) { |
a9d02ad4 SF |
1254 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1255 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1256 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1257 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1258 | pfile_info->Attributes = |
50c2f753 | 1259 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1260 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1261 | pfile_info->AllocationSize = |
1262 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1263 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1264 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1265 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1266 | } |
1267 | } | |
1268 | ||
1269 | cifs_buf_release(pSMB); | |
1270 | if (rc == -EAGAIN) | |
1271 | goto OldOpenRetry; | |
1272 | return rc; | |
1273 | } | |
1274 | ||
1da177e4 | 1275 | int |
96daf2b0 | 1276 | CIFSSMBOpen(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 1277 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1278 | const int access_flags, const int create_options, __u16 *netfid, |
1279 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1280 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1281 | { |
1282 | int rc = -EACCES; | |
1283 | OPEN_REQ *pSMB = NULL; | |
1284 | OPEN_RSP *pSMBr = NULL; | |
1285 | int bytes_returned; | |
1286 | int name_len; | |
1287 | __u16 count; | |
1288 | ||
1289 | openRetry: | |
1290 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1291 | (void **) &pSMBr); | |
1292 | if (rc) | |
1293 | return rc; | |
1294 | ||
1295 | pSMB->AndXCommand = 0xFF; /* none */ | |
1296 | ||
1297 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1298 | count = 1; /* account for one byte pad to word boundary */ | |
1299 | name_len = | |
b1a45695 | 1300 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1301 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1302 | name_len++; /* trailing null */ |
1303 | name_len *= 2; | |
1304 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1305 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1306 | count = 0; /* no pad */ |
1307 | name_len = strnlen(fileName, PATH_MAX); | |
1308 | name_len++; /* trailing null */ | |
1309 | pSMB->NameLength = cpu_to_le16(name_len); | |
1310 | strncpy(pSMB->fileName, fileName, name_len); | |
1311 | } | |
1312 | if (*pOplock & REQ_OPLOCK) | |
1313 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1314 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1315 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1316 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1317 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1318 | /* set file as system file if special file such |
1319 | as fifo and server expecting SFU style and | |
1320 | no Unix extensions */ | |
790fe579 | 1321 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1322 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1323 | else | |
1324 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1325 | |
1da177e4 LT |
1326 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1327 | /* but it helps speed up case sensitive checks for other | |
1328 | servers such as Samba */ | |
1329 | if (tcon->ses->capabilities & CAP_UNIX) | |
1330 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1331 | ||
67750fb9 JL |
1332 | if (create_options & CREATE_OPTION_READONLY) |
1333 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1334 | ||
1da177e4 LT |
1335 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1336 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1337 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1338 | /* BB Expirement with various impersonation levels and verify */ |
1339 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1340 | pSMB->SecurityFlags = |
1341 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1342 | ||
1343 | count += name_len; | |
be8e3b00 | 1344 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1345 | |
1346 | pSMB->ByteCount = cpu_to_le16(count); | |
1347 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1348 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1349 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1350 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1351 | if (rc) { |
b6b38f70 | 1352 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1353 | } else { |
09d1db5c | 1354 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1355 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1356 | /* Let caller know file was created so we can set the mode. */ | |
1357 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1358 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1359 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1360 | if (pfile_info) { |
61e74801 SF |
1361 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1362 | 36 /* CreationTime to Attributes */); | |
1363 | /* the file_info buf is endian converted by caller */ | |
1364 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1365 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1366 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1367 | pfile_info->DeletePending = 0; | |
1da177e4 | 1368 | } |
1da177e4 | 1369 | } |
a5a2b489 | 1370 | |
1da177e4 LT |
1371 | cifs_buf_release(pSMB); |
1372 | if (rc == -EAGAIN) | |
1373 | goto openRetry; | |
1374 | return rc; | |
1375 | } | |
1376 | ||
1da177e4 | 1377 | int |
d4ffff1f | 1378 | CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, |
50c2f753 | 1379 | char **buf, int *pbuf_type) |
1da177e4 LT |
1380 | { |
1381 | int rc = -EACCES; | |
1382 | READ_REQ *pSMB = NULL; | |
1383 | READ_RSP *pSMBr = NULL; | |
1384 | char *pReadData = NULL; | |
bfa0d75a | 1385 | int wct; |
ec637e3f SF |
1386 | int resp_buf_type = 0; |
1387 | struct kvec iov[1]; | |
d4ffff1f PS |
1388 | __u32 pid = io_parms->pid; |
1389 | __u16 netfid = io_parms->netfid; | |
1390 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1391 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1392 | unsigned int count = io_parms->length; |
1da177e4 | 1393 | |
b6b38f70 | 1394 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1395 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1396 | wct = 12; |
4c3130ef | 1397 | else { |
bfa0d75a | 1398 | wct = 10; /* old style read */ |
d4ffff1f | 1399 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1400 | /* can not handle this big offset for old */ |
1401 | return -EIO; | |
1402 | } | |
1403 | } | |
1da177e4 LT |
1404 | |
1405 | *nbytes = 0; | |
ec637e3f | 1406 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1407 | if (rc) |
1408 | return rc; | |
1409 | ||
d4ffff1f PS |
1410 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1411 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1412 | ||
1da177e4 LT |
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 | 1418 | pSMB->Fid = netfid; |
d4ffff1f | 1419 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1420 | if (wct == 12) |
d4ffff1f | 1421 | pSMB->OffsetHigh = cpu_to_le32(offset >> 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; | |
96daf2b0 | 1503 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 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; | |
96daf2b0 | 1715 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
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; | |
96daf2b0 | 1764 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
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; | |
96daf2b0 | 1867 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 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 | 1964 | int |
96daf2b0 | 1965 | CIFSSMBLock(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
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 | 2034 | int |
96daf2b0 | 2035 | CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon, |
08547b03 | 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 | 2172 | int |
96daf2b0 | 2173 | CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
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 | 2205 | int |
96daf2b0 | 2206 | CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
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 | 2226 | int |
96daf2b0 | 2227 | CIFSSMBRename(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 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 | ||
96daf2b0 | 2294 | int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *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 | |
96daf2b0 | 2374 | CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName, |
50c2f753 SF |
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 | |
96daf2b0 | 2442 | CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
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 | |
96daf2b0 | 2531 | CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 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 | |
96daf2b0 | 2616 | CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 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 | |
96daf2b0 | 2688 | CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *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 | 2792 | int |
96daf2b0 | 2793 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 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 */ | |
c974befa | 2813 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
2814 | pSMB->MaxSetupCount = 4; |
2815 | pSMB->Reserved = 0; | |
2816 | pSMB->ParameterOffset = 0; | |
2817 | pSMB->DataCount = 0; | |
2818 | pSMB->DataOffset = 0; | |
2819 | pSMB->SetupCount = 4; | |
2820 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2821 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2822 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2823 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2824 | pSMB->IsRootFlag = 0; | |
2825 | pSMB->Fid = fid; /* file handle always le */ | |
2826 | pSMB->ByteCount = 0; | |
2827 | ||
2828 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2829 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2830 | if (rc) { | |
b6b38f70 | 2831 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
2832 | } else { /* decode response */ |
2833 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2834 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
2835 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
2836 | /* BB also check enough total bytes returned */ | |
1da177e4 | 2837 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
2838 | goto qreparse_out; |
2839 | } | |
2840 | if (data_count && (data_count < 2048)) { | |
2841 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 2842 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 2843 | |
afe48c31 | 2844 | struct reparse_data *reparse_buf = |
50c2f753 SF |
2845 | (struct reparse_data *) |
2846 | ((char *)&pSMBr->hdr.Protocol | |
2847 | + data_offset); | |
afe48c31 SF |
2848 | if ((char *)reparse_buf >= end_of_smb) { |
2849 | rc = -EIO; | |
2850 | goto qreparse_out; | |
2851 | } | |
2852 | if ((reparse_buf->LinkNamesBuf + | |
2853 | reparse_buf->TargetNameOffset + | |
2854 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 2855 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
2856 | rc = -EIO; |
2857 | goto qreparse_out; | |
2858 | } | |
50c2f753 | 2859 | |
afe48c31 SF |
2860 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2861 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
2862 | (reparse_buf->LinkNamesBuf + |
2863 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
2864 | buflen, |
2865 | reparse_buf->TargetNameLen, | |
2866 | nls_codepage, 0); | |
2867 | } else { /* ASCII names */ | |
2868 | strncpy(symlinkinfo, | |
2869 | reparse_buf->LinkNamesBuf + | |
2870 | reparse_buf->TargetNameOffset, | |
2871 | min_t(const int, buflen, | |
2872 | reparse_buf->TargetNameLen)); | |
1da177e4 | 2873 | } |
afe48c31 SF |
2874 | } else { |
2875 | rc = -EIO; | |
b6b38f70 JP |
2876 | cFYI(1, "Invalid return data count on " |
2877 | "get reparse info ioctl"); | |
1da177e4 | 2878 | } |
afe48c31 SF |
2879 | symlinkinfo[buflen] = 0; /* just in case so the caller |
2880 | does not go off the end of the buffer */ | |
b6b38f70 | 2881 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 2882 | } |
989c7e51 | 2883 | |
1da177e4 | 2884 | qreparse_out: |
4a6d87f1 | 2885 | cifs_buf_release(pSMB); |
1da177e4 LT |
2886 | |
2887 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2888 | since file handle passed in no longer valid */ | |
2889 | ||
2890 | return rc; | |
2891 | } | |
c52a9554 | 2892 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
2893 | |
2894 | #ifdef CONFIG_CIFS_POSIX | |
2895 | ||
2896 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2897 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2898 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2899 | { |
2900 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2901 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2902 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2903 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 2904 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
2905 | |
2906 | return; | |
2907 | } | |
2908 | ||
2909 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2910 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2911 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2912 | { |
2913 | int size = 0; | |
2914 | int i; | |
2915 | __u16 count; | |
50c2f753 SF |
2916 | struct cifs_posix_ace *pACE; |
2917 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2918 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2919 | |
2920 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2921 | return -EOPNOTSUPP; | |
2922 | ||
790fe579 | 2923 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2924 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2925 | pACE = &cifs_acl->ace_array[0]; | |
2926 | size = sizeof(struct cifs_posix_acl); | |
2927 | size += sizeof(struct cifs_posix_ace) * count; | |
2928 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2929 | if (size_of_data_area < size) { |
b6b38f70 JP |
2930 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
2931 | size_of_data_area, size); | |
1da177e4 LT |
2932 | return -EINVAL; |
2933 | } | |
790fe579 | 2934 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2935 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2936 | size = sizeof(struct cifs_posix_acl); | |
2937 | size += sizeof(struct cifs_posix_ace) * count; | |
2938 | /* skip past access ACEs to get to default ACEs */ | |
2939 | pACE = &cifs_acl->ace_array[count]; | |
2940 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2941 | size += sizeof(struct cifs_posix_ace) * count; | |
2942 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2943 | if (size_of_data_area < size) |
1da177e4 LT |
2944 | return -EINVAL; |
2945 | } else { | |
2946 | /* illegal type */ | |
2947 | return -EINVAL; | |
2948 | } | |
2949 | ||
2950 | size = posix_acl_xattr_size(count); | |
790fe579 | 2951 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2952 | /* used to query ACL EA size */ |
790fe579 | 2953 | } else if (size > buflen) { |
1da177e4 LT |
2954 | return -ERANGE; |
2955 | } else /* buffer big enough */ { | |
ff7feac9 | 2956 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2957 | for (i = 0; i < count ; i++) { |
2958 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2959 | pACE++; | |
1da177e4 LT |
2960 | } |
2961 | } | |
2962 | return size; | |
2963 | } | |
2964 | ||
50c2f753 SF |
2965 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2966 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2967 | { |
2968 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2969 | ||
ff7feac9 SF |
2970 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2971 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2972 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2973 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2974 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2975 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2976 | } else |
ff7feac9 | 2977 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 2978 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
2979 | return rc; |
2980 | } | |
2981 | ||
2982 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2983 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2984 | const int buflen, const int acl_type) | |
1da177e4 LT |
2985 | { |
2986 | __u16 rc = 0; | |
50c2f753 SF |
2987 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2988 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2989 | int count; |
2990 | int i; | |
2991 | ||
790fe579 | 2992 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2993 | return 0; |
2994 | ||
2995 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 2996 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 2997 | "version of %d", |
b6b38f70 | 2998 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 2999 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3000 | cFYI(1, "unknown POSIX ACL version %d", |
3001 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3002 | return 0; |
3003 | } | |
3004 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3005 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3006 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3007 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3008 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3009 | else { |
b6b38f70 | 3010 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3011 | return 0; |
3012 | } | |
50c2f753 | 3013 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3014 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3015 | &local_acl->a_entries[i]); | |
790fe579 | 3016 | if (rc != 0) { |
1da177e4 LT |
3017 | /* ACE not converted */ |
3018 | break; | |
3019 | } | |
3020 | } | |
790fe579 | 3021 | if (rc == 0) { |
1da177e4 LT |
3022 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3023 | rc += sizeof(struct cifs_posix_acl); | |
3024 | /* BB add check to make sure ACL does not overflow SMB */ | |
3025 | } | |
3026 | return rc; | |
3027 | } | |
3028 | ||
3029 | int | |
96daf2b0 | 3030 | CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3031 | const unsigned char *searchName, |
3032 | char *acl_inf, const int buflen, const int acl_type, | |
3033 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3034 | { |
3035 | /* SMB_QUERY_POSIX_ACL */ | |
3036 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3037 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3038 | int rc = 0; | |
3039 | int bytes_returned; | |
3040 | int name_len; | |
3041 | __u16 params, byte_count; | |
50c2f753 | 3042 | |
b6b38f70 | 3043 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3044 | |
3045 | queryAclRetry: | |
3046 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3047 | (void **) &pSMBr); | |
3048 | if (rc) | |
3049 | return rc; | |
50c2f753 | 3050 | |
1da177e4 LT |
3051 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3052 | name_len = | |
50c2f753 | 3053 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3054 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3055 | name_len++; /* trailing null */ |
3056 | name_len *= 2; | |
3057 | pSMB->FileName[name_len] = 0; | |
3058 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3059 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3060 | name_len = strnlen(searchName, PATH_MAX); |
3061 | name_len++; /* trailing null */ | |
3062 | strncpy(pSMB->FileName, searchName, name_len); | |
3063 | } | |
3064 | ||
3065 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3066 | pSMB->TotalDataCount = 0; | |
3067 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3068 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3069 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3070 | pSMB->MaxSetupCount = 0; | |
3071 | pSMB->Reserved = 0; | |
3072 | pSMB->Flags = 0; | |
3073 | pSMB->Timeout = 0; | |
3074 | pSMB->Reserved2 = 0; | |
3075 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3076 | offsetof(struct smb_com_transaction2_qpi_req, |
3077 | InformationLevel) - 4); | |
1da177e4 LT |
3078 | pSMB->DataCount = 0; |
3079 | pSMB->DataOffset = 0; | |
3080 | pSMB->SetupCount = 1; | |
3081 | pSMB->Reserved3 = 0; | |
3082 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3083 | byte_count = params + 1 /* pad */ ; | |
3084 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3085 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3086 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3087 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3088 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3089 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3090 | ||
3091 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3092 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 3093 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 3094 | if (rc) { |
b6b38f70 | 3095 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3096 | } else { |
3097 | /* decode response */ | |
50c2f753 | 3098 | |
1da177e4 | 3099 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3100 | /* BB also check enough total bytes returned */ |
820a803f | 3101 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3102 | rc = -EIO; /* bad smb */ |
3103 | else { | |
3104 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3105 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3106 | rc = cifs_copy_posix_acl(acl_inf, | |
3107 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3108 | buflen, acl_type, count); |
1da177e4 LT |
3109 | } |
3110 | } | |
3111 | cifs_buf_release(pSMB); | |
3112 | if (rc == -EAGAIN) | |
3113 | goto queryAclRetry; | |
3114 | return rc; | |
3115 | } | |
3116 | ||
3117 | int | |
96daf2b0 | 3118 | CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3119 | const unsigned char *fileName, |
3120 | const char *local_acl, const int buflen, | |
3121 | const int acl_type, | |
3122 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3123 | { |
3124 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3125 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3126 | char *parm_data; | |
3127 | int name_len; | |
3128 | int rc = 0; | |
3129 | int bytes_returned = 0; | |
3130 | __u16 params, byte_count, data_count, param_offset, offset; | |
3131 | ||
b6b38f70 | 3132 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3133 | setAclRetry: |
3134 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3135 | (void **) &pSMBr); |
1da177e4 LT |
3136 | if (rc) |
3137 | return rc; | |
3138 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3139 | name_len = | |
50c2f753 | 3140 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 3141 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3142 | name_len++; /* trailing null */ |
3143 | name_len *= 2; | |
50c2f753 | 3144 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3145 | name_len = strnlen(fileName, PATH_MAX); |
3146 | name_len++; /* trailing null */ | |
3147 | strncpy(pSMB->FileName, fileName, name_len); | |
3148 | } | |
3149 | params = 6 + name_len; | |
3150 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3151 | /* BB find max SMB size from sess */ |
3152 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3153 | pSMB->MaxSetupCount = 0; |
3154 | pSMB->Reserved = 0; | |
3155 | pSMB->Flags = 0; | |
3156 | pSMB->Timeout = 0; | |
3157 | pSMB->Reserved2 = 0; | |
3158 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3159 | InformationLevel) - 4; |
1da177e4 LT |
3160 | offset = param_offset + params; |
3161 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3162 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3163 | ||
3164 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3165 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3166 | |
790fe579 | 3167 | if (data_count == 0) { |
1da177e4 LT |
3168 | rc = -EOPNOTSUPP; |
3169 | goto setACLerrorExit; | |
3170 | } | |
3171 | pSMB->DataOffset = cpu_to_le16(offset); | |
3172 | pSMB->SetupCount = 1; | |
3173 | pSMB->Reserved3 = 0; | |
3174 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3175 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3176 | byte_count = 3 /* pad */ + params + data_count; | |
3177 | pSMB->DataCount = cpu_to_le16(data_count); | |
3178 | pSMB->TotalDataCount = pSMB->DataCount; | |
3179 | pSMB->ParameterCount = cpu_to_le16(params); | |
3180 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3181 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3182 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3183 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3184 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3185 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3186 | if (rc) |
b6b38f70 | 3187 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3188 | |
3189 | setACLerrorExit: | |
3190 | cifs_buf_release(pSMB); | |
3191 | if (rc == -EAGAIN) | |
3192 | goto setAclRetry; | |
3193 | return rc; | |
3194 | } | |
3195 | ||
f654bac2 SF |
3196 | /* BB fix tabs in this function FIXME BB */ |
3197 | int | |
96daf2b0 | 3198 | CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3199 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3200 | { |
50c2f753 SF |
3201 | int rc = 0; |
3202 | struct smb_t2_qfi_req *pSMB = NULL; | |
3203 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3204 | int bytes_returned; | |
3205 | __u16 params, byte_count; | |
f654bac2 | 3206 | |
b6b38f70 | 3207 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3208 | if (tcon == NULL) |
3209 | return -ENODEV; | |
f654bac2 SF |
3210 | |
3211 | GetExtAttrRetry: | |
790fe579 SF |
3212 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3213 | (void **) &pSMBr); | |
3214 | if (rc) | |
3215 | return rc; | |
f654bac2 | 3216 | |
ad7a2926 | 3217 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3218 | pSMB->t2.TotalDataCount = 0; |
3219 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3220 | /* BB find exact max data count below from sess structure BB */ | |
3221 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3222 | pSMB->t2.MaxSetupCount = 0; | |
3223 | pSMB->t2.Reserved = 0; | |
3224 | pSMB->t2.Flags = 0; | |
3225 | pSMB->t2.Timeout = 0; | |
3226 | pSMB->t2.Reserved2 = 0; | |
3227 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3228 | Fid) - 4); | |
3229 | pSMB->t2.DataCount = 0; | |
3230 | pSMB->t2.DataOffset = 0; | |
3231 | pSMB->t2.SetupCount = 1; | |
3232 | pSMB->t2.Reserved3 = 0; | |
3233 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3234 | byte_count = params + 1 /* pad */ ; | |
3235 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3236 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3237 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3238 | pSMB->Pad = 0; | |
f654bac2 | 3239 | pSMB->Fid = netfid; |
be8e3b00 | 3240 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3241 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3242 | ||
3243 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3244 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3245 | if (rc) { | |
b6b38f70 | 3246 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3247 | } else { |
3248 | /* decode response */ | |
3249 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3250 | /* BB also check enough total bytes returned */ |
820a803f | 3251 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3252 | /* If rc should we check for EOPNOSUPP and |
3253 | disable the srvino flag? or in caller? */ | |
3254 | rc = -EIO; /* bad smb */ | |
3255 | else { | |
3256 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3257 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3258 | struct file_chattr_info *pfinfo; | |
3259 | /* BB Do we need a cast or hash here ? */ | |
3260 | if (count != 16) { | |
b6b38f70 | 3261 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3262 | rc = -EIO; |
3263 | goto GetExtAttrOut; | |
3264 | } | |
3265 | pfinfo = (struct file_chattr_info *) | |
3266 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3267 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3268 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3269 | } |
3270 | } | |
f654bac2 | 3271 | GetExtAttrOut: |
790fe579 SF |
3272 | cifs_buf_release(pSMB); |
3273 | if (rc == -EAGAIN) | |
3274 | goto GetExtAttrRetry; | |
3275 | return rc; | |
f654bac2 SF |
3276 | } |
3277 | ||
f654bac2 | 3278 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3279 | |
79df1bae JL |
3280 | #ifdef CONFIG_CIFS_ACL |
3281 | /* | |
3282 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3283 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3284 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3285 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3286 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3287 | * by caller | |
3288 | */ | |
3289 | static int | |
3290 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3291 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3292 | void **ret_buf) |
3293 | { | |
3294 | int rc; | |
3295 | __u32 temp_offset; | |
3296 | struct smb_com_ntransact_req *pSMB; | |
3297 | ||
3298 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3299 | (void **)&pSMB); | |
3300 | if (rc) | |
3301 | return rc; | |
3302 | *ret_buf = (void *)pSMB; | |
3303 | pSMB->Reserved = 0; | |
3304 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3305 | pSMB->TotalDataCount = 0; | |
c974befa | 3306 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3307 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3308 | pSMB->DataCount = pSMB->TotalDataCount; | |
3309 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3310 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3311 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3312 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3313 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3314 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3315 | return 0; | |
3316 | } | |
3317 | ||
3318 | static int | |
3319 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3320 | __u32 *pparmlen, __u32 *pdatalen) | |
3321 | { | |
3322 | char *end_of_smb; | |
3323 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3324 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3325 | u16 bcc; |
79df1bae JL |
3326 | |
3327 | *pdatalen = 0; | |
3328 | *pparmlen = 0; | |
3329 | ||
3330 | if (buf == NULL) | |
3331 | return -EINVAL; | |
3332 | ||
3333 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3334 | ||
820a803f JL |
3335 | bcc = get_bcc(&pSMBr->hdr); |
3336 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3337 | (char *)&pSMBr->ByteCount; |
3338 | ||
3339 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3340 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3341 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3342 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3343 | ||
3344 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3345 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3346 | ||
3347 | /* should we also check that parm and data areas do not overlap? */ | |
3348 | if (*ppparm > end_of_smb) { | |
3349 | cFYI(1, "parms start after end of smb"); | |
3350 | return -EINVAL; | |
3351 | } else if (parm_count + *ppparm > end_of_smb) { | |
3352 | cFYI(1, "parm end after end of smb"); | |
3353 | return -EINVAL; | |
3354 | } else if (*ppdata > end_of_smb) { | |
3355 | cFYI(1, "data starts after end of smb"); | |
3356 | return -EINVAL; | |
3357 | } else if (data_count + *ppdata > end_of_smb) { | |
3358 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3359 | *ppdata, data_count, (data_count + *ppdata), | |
3360 | end_of_smb, pSMBr); | |
3361 | return -EINVAL; | |
820a803f | 3362 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3363 | cFYI(1, "parm count and data count larger than SMB"); |
3364 | return -EINVAL; | |
3365 | } | |
3366 | *pdatalen = data_count; | |
3367 | *pparmlen = parm_count; | |
3368 | return 0; | |
3369 | } | |
3370 | ||
0a4b92c0 SF |
3371 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3372 | int | |
96daf2b0 | 3373 | CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3374 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3375 | { |
3376 | int rc = 0; | |
3377 | int buf_type = 0; | |
ad7a2926 | 3378 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3379 | struct kvec iov[1]; |
3380 | ||
b6b38f70 | 3381 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3382 | |
630f3f0c SF |
3383 | *pbuflen = 0; |
3384 | *acl_inf = NULL; | |
3385 | ||
b9c7a2bb | 3386 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3387 | 8 /* parm len */, tcon, (void **) &pSMB); |
3388 | if (rc) | |
3389 | return rc; | |
3390 | ||
3391 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3392 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3393 | pSMB->MaxSetupCount = 0; | |
3394 | pSMB->Fid = fid; /* file handle always le */ | |
3395 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3396 | CIFS_ACL_DACL); | |
3397 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3398 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3399 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3400 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3401 | |
a761ac57 | 3402 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3403 | 0); |
0a4b92c0 SF |
3404 | cifs_stats_inc(&tcon->num_acl_get); |
3405 | if (rc) { | |
b6b38f70 | 3406 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3407 | } else { /* decode response */ |
ad7a2926 | 3408 | __le32 *parm; |
630f3f0c SF |
3409 | __u32 parm_len; |
3410 | __u32 acl_len; | |
50c2f753 | 3411 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3412 | char *pdata; |
0a4b92c0 SF |
3413 | |
3414 | /* validate_nttransact */ | |
50c2f753 | 3415 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3416 | &pdata, &parm_len, pbuflen); |
790fe579 | 3417 | if (rc) |
0a4b92c0 SF |
3418 | goto qsec_out; |
3419 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3420 | ||
b6b38f70 | 3421 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3422 | |
3423 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3424 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3425 | *pbuflen = 0; |
0a4b92c0 SF |
3426 | goto qsec_out; |
3427 | } | |
3428 | ||
3429 | /* BB check that data area is minimum length and as big as acl_len */ | |
3430 | ||
af6f4612 | 3431 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3432 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3433 | cERROR(1, "acl length %d does not match %d", |
3434 | acl_len, *pbuflen); | |
630f3f0c SF |
3435 | if (*pbuflen > acl_len) |
3436 | *pbuflen = acl_len; | |
3437 | } | |
0a4b92c0 | 3438 | |
630f3f0c SF |
3439 | /* check if buffer is big enough for the acl |
3440 | header followed by the smallest SID */ | |
3441 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3442 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3443 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3444 | rc = -EINVAL; |
3445 | *pbuflen = 0; | |
3446 | } else { | |
3447 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3448 | if (*acl_inf == NULL) { | |
3449 | *pbuflen = 0; | |
3450 | rc = -ENOMEM; | |
3451 | } | |
3452 | memcpy(*acl_inf, pdata, *pbuflen); | |
3453 | } | |
0a4b92c0 SF |
3454 | } |
3455 | qsec_out: | |
790fe579 | 3456 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3457 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3458 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3459 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3460 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3461 | return rc; |
3462 | } | |
97837582 SF |
3463 | |
3464 | int | |
96daf2b0 | 3465 | CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
97837582 SF |
3466 | struct cifs_ntsd *pntsd, __u32 acllen) |
3467 | { | |
3468 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3469 | int rc = 0; | |
3470 | int bytes_returned = 0; | |
3471 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3472 | NTRANSACT_RSP *pSMBr = NULL; | |
3473 | ||
3474 | setCifsAclRetry: | |
3475 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3476 | (void **) &pSMBr); | |
3477 | if (rc) | |
3478 | return (rc); | |
3479 | ||
3480 | pSMB->MaxSetupCount = 0; | |
3481 | pSMB->Reserved = 0; | |
3482 | ||
3483 | param_count = 8; | |
3484 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3485 | data_count = acllen; | |
3486 | data_offset = param_offset + param_count; | |
3487 | byte_count = 3 /* pad */ + param_count; | |
3488 | ||
3489 | pSMB->DataCount = cpu_to_le32(data_count); | |
3490 | pSMB->TotalDataCount = pSMB->DataCount; | |
3491 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3492 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3493 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3494 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3495 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3496 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3497 | pSMB->SetupCount = 0; | |
3498 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3499 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3500 | ||
3501 | pSMB->Fid = fid; /* file handle always le */ | |
3502 | pSMB->Reserved2 = 0; | |
3503 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3504 | ||
3505 | if (pntsd && acllen) { | |
3506 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3507 | (char *) pntsd, | |
3508 | acllen); | |
be8e3b00 | 3509 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3510 | } else |
be8e3b00 | 3511 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3512 | |
3513 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3514 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3515 | ||
b6b38f70 | 3516 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3517 | if (rc) |
b6b38f70 | 3518 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3519 | cifs_buf_release(pSMB); |
3520 | ||
3521 | if (rc == -EAGAIN) | |
3522 | goto setCifsAclRetry; | |
3523 | ||
3524 | return (rc); | |
3525 | } | |
3526 | ||
79df1bae | 3527 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3528 | |
6b8edfe0 SF |
3529 | /* Legacy Query Path Information call for lookup to old servers such |
3530 | as Win9x/WinME */ | |
96daf2b0 | 3531 | int SMBQueryInformation(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3532 | const unsigned char *searchName, |
3533 | FILE_ALL_INFO *pFinfo, | |
3534 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3535 | { |
ad7a2926 SF |
3536 | QUERY_INFORMATION_REQ *pSMB; |
3537 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3538 | int rc = 0; |
3539 | int bytes_returned; | |
3540 | int name_len; | |
3541 | ||
b6b38f70 | 3542 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3543 | QInfRetry: |
3544 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3545 | (void **) &pSMBr); |
6b8edfe0 SF |
3546 | if (rc) |
3547 | return rc; | |
3548 | ||
3549 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3550 | name_len = | |
50c2f753 SF |
3551 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3552 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3553 | name_len++; /* trailing null */ |
3554 | name_len *= 2; | |
50c2f753 | 3555 | } else { |
6b8edfe0 SF |
3556 | name_len = strnlen(searchName, PATH_MAX); |
3557 | name_len++; /* trailing null */ | |
3558 | strncpy(pSMB->FileName, searchName, name_len); | |
3559 | } | |
3560 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3561 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3562 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3563 | pSMB->ByteCount = cpu_to_le16(name_len); |
3564 | ||
3565 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3566 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3567 | if (rc) { |
b6b38f70 | 3568 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3569 | } else if (pFinfo) { |
1bd5bbcb SF |
3570 | struct timespec ts; |
3571 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3572 | |
3573 | /* decode response */ | |
1bd5bbcb | 3574 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3575 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3576 | ts.tv_nsec = 0; |
3577 | ts.tv_sec = time; | |
3578 | /* decode time fields */ | |
733f99ac | 3579 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3580 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3581 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3582 | pFinfo->AllocationSize = |
3583 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3584 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3585 | pFinfo->Attributes = | |
3586 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3587 | } else |
3588 | rc = -EIO; /* bad buffer passed in */ | |
3589 | ||
3590 | cifs_buf_release(pSMB); | |
3591 | ||
3592 | if (rc == -EAGAIN) | |
3593 | goto QInfRetry; | |
3594 | ||
3595 | return rc; | |
3596 | } | |
3597 | ||
bcd5357f | 3598 | int |
96daf2b0 | 3599 | CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3600 | u16 netfid, FILE_ALL_INFO *pFindData) |
3601 | { | |
3602 | struct smb_t2_qfi_req *pSMB = NULL; | |
3603 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3604 | int rc = 0; | |
3605 | int bytes_returned; | |
3606 | __u16 params, byte_count; | |
3607 | ||
3608 | QFileInfoRetry: | |
3609 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3610 | (void **) &pSMBr); | |
3611 | if (rc) | |
3612 | return rc; | |
3613 | ||
3614 | params = 2 /* level */ + 2 /* fid */; | |
3615 | pSMB->t2.TotalDataCount = 0; | |
3616 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3617 | /* BB find exact max data count below from sess structure BB */ | |
3618 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3619 | pSMB->t2.MaxSetupCount = 0; | |
3620 | pSMB->t2.Reserved = 0; | |
3621 | pSMB->t2.Flags = 0; | |
3622 | pSMB->t2.Timeout = 0; | |
3623 | pSMB->t2.Reserved2 = 0; | |
3624 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3625 | Fid) - 4); | |
3626 | pSMB->t2.DataCount = 0; | |
3627 | pSMB->t2.DataOffset = 0; | |
3628 | pSMB->t2.SetupCount = 1; | |
3629 | pSMB->t2.Reserved3 = 0; | |
3630 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3631 | byte_count = params + 1 /* pad */ ; | |
3632 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3633 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3634 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3635 | pSMB->Pad = 0; | |
3636 | pSMB->Fid = netfid; | |
be8e3b00 | 3637 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3638 | |
bcd5357f JL |
3639 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3640 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3641 | if (rc) { | |
f19159dc | 3642 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3643 | } else { /* decode response */ |
3644 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3645 | |
bcd5357f JL |
3646 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3647 | rc = -EIO; | |
820a803f | 3648 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3649 | rc = -EIO; /* bad smb */ |
3650 | else if (pFindData) { | |
3651 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3652 | memcpy((char *) pFindData, | |
3653 | (char *) &pSMBr->hdr.Protocol + | |
3654 | data_offset, sizeof(FILE_ALL_INFO)); | |
3655 | } else | |
3656 | rc = -ENOMEM; | |
3657 | } | |
3658 | cifs_buf_release(pSMB); | |
3659 | if (rc == -EAGAIN) | |
3660 | goto QFileInfoRetry; | |
6b8edfe0 | 3661 | |
bcd5357f JL |
3662 | return rc; |
3663 | } | |
6b8edfe0 | 3664 | |
1da177e4 | 3665 | int |
96daf2b0 | 3666 | CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3667 | const unsigned char *searchName, |
ad7a2926 | 3668 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3669 | int legacy /* old style infolevel */, |
737b758c | 3670 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3671 | { |
3672 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3673 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3674 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3675 | int rc = 0; | |
3676 | int bytes_returned; | |
3677 | int name_len; | |
3678 | __u16 params, byte_count; | |
3679 | ||
b6b38f70 | 3680 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3681 | QPathInfoRetry: |
3682 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3683 | (void **) &pSMBr); | |
3684 | if (rc) | |
3685 | return rc; | |
3686 | ||
3687 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3688 | name_len = | |
50c2f753 | 3689 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3690 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3691 | name_len++; /* trailing null */ |
3692 | name_len *= 2; | |
50c2f753 | 3693 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3694 | name_len = strnlen(searchName, PATH_MAX); |
3695 | name_len++; /* trailing null */ | |
3696 | strncpy(pSMB->FileName, searchName, name_len); | |
3697 | } | |
3698 | ||
50c2f753 | 3699 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3700 | pSMB->TotalDataCount = 0; |
3701 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3702 | /* BB find exact max SMB PDU from sess structure BB */ |
3703 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3704 | pSMB->MaxSetupCount = 0; |
3705 | pSMB->Reserved = 0; | |
3706 | pSMB->Flags = 0; | |
3707 | pSMB->Timeout = 0; | |
3708 | pSMB->Reserved2 = 0; | |
3709 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3710 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3711 | pSMB->DataCount = 0; |
3712 | pSMB->DataOffset = 0; | |
3713 | pSMB->SetupCount = 1; | |
3714 | pSMB->Reserved3 = 0; | |
3715 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3716 | byte_count = params + 1 /* pad */ ; | |
3717 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3718 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3719 | if (legacy) |
acf1a1b1 SF |
3720 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3721 | else | |
3722 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3723 | pSMB->Reserved4 = 0; |
be8e3b00 | 3724 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3725 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3726 | ||
3727 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3728 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3729 | if (rc) { | |
b6b38f70 | 3730 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3731 | } else { /* decode response */ |
3732 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3733 | ||
acf1a1b1 SF |
3734 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3735 | rc = -EIO; | |
820a803f | 3736 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3737 | rc = -EIO; /* bad smb */ |
820a803f | 3738 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3739 | rc = -EIO; /* 24 or 26 expected but we do not read |
3740 | last field */ | |
3741 | else if (pFindData) { | |
acf1a1b1 | 3742 | int size; |
1da177e4 | 3743 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3744 | |
3745 | /* On legacy responses we do not read the last field, | |
3746 | EAsize, fortunately since it varies by subdialect and | |
3747 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3748 | bytes depending but we don't care here */ | |
3749 | if (legacy) | |
acf1a1b1 SF |
3750 | size = sizeof(FILE_INFO_STANDARD); |
3751 | else | |
3752 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3753 | memcpy((char *) pFindData, |
3754 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3755 | data_offset, size); |
1da177e4 LT |
3756 | } else |
3757 | rc = -ENOMEM; | |
3758 | } | |
3759 | cifs_buf_release(pSMB); | |
3760 | if (rc == -EAGAIN) | |
3761 | goto QPathInfoRetry; | |
3762 | ||
3763 | return rc; | |
3764 | } | |
3765 | ||
c8634fd3 | 3766 | int |
96daf2b0 | 3767 | CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
3768 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
3769 | { | |
3770 | struct smb_t2_qfi_req *pSMB = NULL; | |
3771 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3772 | int rc = 0; | |
3773 | int bytes_returned; | |
3774 | __u16 params, byte_count; | |
3775 | ||
3776 | UnixQFileInfoRetry: | |
3777 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3778 | (void **) &pSMBr); | |
3779 | if (rc) | |
3780 | return rc; | |
3781 | ||
3782 | params = 2 /* level */ + 2 /* fid */; | |
3783 | pSMB->t2.TotalDataCount = 0; | |
3784 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3785 | /* BB find exact max data count below from sess structure BB */ | |
3786 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3787 | pSMB->t2.MaxSetupCount = 0; | |
3788 | pSMB->t2.Reserved = 0; | |
3789 | pSMB->t2.Flags = 0; | |
3790 | pSMB->t2.Timeout = 0; | |
3791 | pSMB->t2.Reserved2 = 0; | |
3792 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3793 | Fid) - 4); | |
3794 | pSMB->t2.DataCount = 0; | |
3795 | pSMB->t2.DataOffset = 0; | |
3796 | pSMB->t2.SetupCount = 1; | |
3797 | pSMB->t2.Reserved3 = 0; | |
3798 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3799 | byte_count = params + 1 /* pad */ ; | |
3800 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3801 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3802 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3803 | pSMB->Pad = 0; | |
3804 | pSMB->Fid = netfid; | |
be8e3b00 | 3805 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
3806 | |
3807 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3808 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3809 | if (rc) { | |
f19159dc | 3810 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
3811 | } else { /* decode response */ |
3812 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3813 | ||
820a803f | 3814 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 3815 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 3816 | "Unix Extensions can be disabled on mount " |
f19159dc | 3817 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
3818 | rc = -EIO; /* bad smb */ |
3819 | } else { | |
3820 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3821 | memcpy((char *) pFindData, | |
3822 | (char *) &pSMBr->hdr.Protocol + | |
3823 | data_offset, | |
3824 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3825 | } | |
3826 | } | |
3827 | ||
3828 | cifs_buf_release(pSMB); | |
3829 | if (rc == -EAGAIN) | |
3830 | goto UnixQFileInfoRetry; | |
3831 | ||
3832 | return rc; | |
3833 | } | |
3834 | ||
1da177e4 | 3835 | int |
96daf2b0 | 3836 | CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3837 | const unsigned char *searchName, |
582d21e5 | 3838 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3839 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3840 | { |
3841 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3842 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3843 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3844 | int rc = 0; | |
3845 | int bytes_returned = 0; | |
3846 | int name_len; | |
3847 | __u16 params, byte_count; | |
3848 | ||
b6b38f70 | 3849 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
3850 | UnixQPathInfoRetry: |
3851 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3852 | (void **) &pSMBr); | |
3853 | if (rc) | |
3854 | return rc; | |
3855 | ||
3856 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3857 | name_len = | |
b1a45695 | 3858 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3859 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3860 | name_len++; /* trailing null */ |
3861 | name_len *= 2; | |
50c2f753 | 3862 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3863 | name_len = strnlen(searchName, PATH_MAX); |
3864 | name_len++; /* trailing null */ | |
3865 | strncpy(pSMB->FileName, searchName, name_len); | |
3866 | } | |
3867 | ||
50c2f753 | 3868 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3869 | pSMB->TotalDataCount = 0; |
3870 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3871 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3872 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3873 | pSMB->MaxSetupCount = 0; |
3874 | pSMB->Reserved = 0; | |
3875 | pSMB->Flags = 0; | |
3876 | pSMB->Timeout = 0; | |
3877 | pSMB->Reserved2 = 0; | |
3878 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3879 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3880 | pSMB->DataCount = 0; |
3881 | pSMB->DataOffset = 0; | |
3882 | pSMB->SetupCount = 1; | |
3883 | pSMB->Reserved3 = 0; | |
3884 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3885 | byte_count = params + 1 /* pad */ ; | |
3886 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3887 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3888 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3889 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3890 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3891 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3892 | ||
3893 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3894 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3895 | if (rc) { | |
b6b38f70 | 3896 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
3897 | } else { /* decode response */ |
3898 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3899 | ||
820a803f | 3900 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 3901 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 3902 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 3903 | "by specifying the nosfu mount option."); |
1da177e4 LT |
3904 | rc = -EIO; /* bad smb */ |
3905 | } else { | |
3906 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3907 | memcpy((char *) pFindData, | |
3908 | (char *) &pSMBr->hdr.Protocol + | |
3909 | data_offset, | |
630f3f0c | 3910 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3911 | } |
3912 | } | |
3913 | cifs_buf_release(pSMB); | |
3914 | if (rc == -EAGAIN) | |
3915 | goto UnixQPathInfoRetry; | |
3916 | ||
3917 | return rc; | |
3918 | } | |
3919 | ||
1da177e4 LT |
3920 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3921 | int | |
96daf2b0 | 3922 | CIFSFindFirst(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 3923 | const char *searchName, |
1da177e4 | 3924 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3925 | __u16 *pnetfid, |
3926 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3927 | { |
3928 | /* level 257 SMB_ */ | |
3929 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3930 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3931 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3932 | int rc = 0; |
3933 | int bytes_returned = 0; | |
3934 | int name_len; | |
3935 | __u16 params, byte_count; | |
3936 | ||
b6b38f70 | 3937 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
3938 | |
3939 | findFirstRetry: | |
3940 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3941 | (void **) &pSMBr); | |
3942 | if (rc) | |
3943 | return rc; | |
3944 | ||
3945 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3946 | name_len = | |
50c2f753 | 3947 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3948 | PATH_MAX, nls_codepage, remap); |
3949 | /* We can not add the asterik earlier in case | |
3950 | it got remapped to 0xF03A as if it were part of the | |
3951 | directory name instead of a wildcard */ | |
1da177e4 | 3952 | name_len *= 2; |
ac67055e | 3953 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3954 | pSMB->FileName[name_len+1] = 0; |
3955 | pSMB->FileName[name_len+2] = '*'; | |
3956 | pSMB->FileName[name_len+3] = 0; | |
3957 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3958 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3959 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3960 | name_len += 2; |
1da177e4 LT |
3961 | } else { /* BB add check for overrun of SMB buf BB */ |
3962 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3963 | /* BB fix here and in unicode clause above ie |
790fe579 | 3964 | if (name_len > buffersize-header) |
1da177e4 LT |
3965 | free buffer exit; BB */ |
3966 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3967 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3968 | pSMB->FileName[name_len+1] = '*'; |
3969 | pSMB->FileName[name_len+2] = 0; | |
3970 | name_len += 3; | |
1da177e4 LT |
3971 | } |
3972 | ||
3973 | params = 12 + name_len /* includes null */ ; | |
3974 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3975 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 3976 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3977 | pSMB->MaxSetupCount = 0; |
3978 | pSMB->Reserved = 0; | |
3979 | pSMB->Flags = 0; | |
3980 | pSMB->Timeout = 0; | |
3981 | pSMB->Reserved2 = 0; | |
3982 | byte_count = params + 1 /* pad */ ; | |
3983 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3984 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3985 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3986 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3987 | - 4); | |
1da177e4 LT |
3988 | pSMB->DataCount = 0; |
3989 | pSMB->DataOffset = 0; | |
3990 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3991 | pSMB->Reserved3 = 0; | |
3992 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3993 | pSMB->SearchAttributes = | |
3994 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3995 | ATTR_DIRECTORY); | |
50c2f753 SF |
3996 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3997 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3998 | CIFS_SEARCH_RETURN_RESUME); |
3999 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
4000 | ||
4001 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4002 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4003 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4004 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4005 | ||
4006 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4007 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4008 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 4009 | |
88274815 SF |
4010 | if (rc) {/* BB add logic to retry regular search if Unix search |
4011 | rejected unexpectedly by server */ | |
1da177e4 | 4012 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4013 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4014 | |
88274815 | 4015 | cifs_buf_release(pSMB); |
1da177e4 LT |
4016 | |
4017 | /* BB eventually could optimize out free and realloc of buf */ | |
4018 | /* for this case */ | |
4019 | if (rc == -EAGAIN) | |
4020 | goto findFirstRetry; | |
4021 | } else { /* decode response */ | |
4022 | /* BB remember to free buffer if error BB */ | |
4023 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4024 | if (rc == 0) { |
b77d753c SF |
4025 | unsigned int lnoff; |
4026 | ||
1da177e4 | 4027 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4028 | psrch_inf->unicode = true; |
1da177e4 | 4029 | else |
4b18f2a9 | 4030 | psrch_inf->unicode = false; |
1da177e4 LT |
4031 | |
4032 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4033 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4034 | psrch_inf->srch_entries_start = |
4035 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4036 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4037 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4038 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4039 | ||
790fe579 | 4040 | if (parms->EndofSearch) |
4b18f2a9 | 4041 | psrch_inf->endOfSearch = true; |
1da177e4 | 4042 | else |
4b18f2a9 | 4043 | psrch_inf->endOfSearch = false; |
1da177e4 | 4044 | |
50c2f753 SF |
4045 | psrch_inf->entries_in_buffer = |
4046 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4047 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4048 | psrch_inf->entries_in_buffer; |
b77d753c | 4049 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4050 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4051 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4052 | psrch_inf->last_entry = NULL; |
4053 | return rc; | |
4054 | } | |
4055 | ||
0752f152 | 4056 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4057 | lnoff; |
4058 | ||
1da177e4 LT |
4059 | *pnetfid = parms->SearchHandle; |
4060 | } else { | |
4061 | cifs_buf_release(pSMB); | |
4062 | } | |
4063 | } | |
4064 | ||
4065 | return rc; | |
4066 | } | |
4067 | ||
96daf2b0 | 4068 | int CIFSFindNext(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4069 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
4070 | { |
4071 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4072 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4073 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4074 | char *response_data; |
4075 | int rc = 0; | |
9438fabb JL |
4076 | int bytes_returned; |
4077 | unsigned int name_len; | |
1da177e4 LT |
4078 | __u16 params, byte_count; |
4079 | ||
b6b38f70 | 4080 | cFYI(1, "In FindNext"); |
1da177e4 | 4081 | |
4b18f2a9 | 4082 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4083 | return -ENOENT; |
4084 | ||
4085 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4086 | (void **) &pSMBr); | |
4087 | if (rc) | |
4088 | return rc; | |
4089 | ||
50c2f753 | 4090 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4091 | byte_count = 0; |
4092 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4093 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4094 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4095 | pSMB->MaxSetupCount = 0; |
4096 | pSMB->Reserved = 0; | |
4097 | pSMB->Flags = 0; | |
4098 | pSMB->Timeout = 0; | |
4099 | pSMB->Reserved2 = 0; | |
4100 | pSMB->ParameterOffset = cpu_to_le16( | |
4101 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4102 | pSMB->DataCount = 0; | |
4103 | pSMB->DataOffset = 0; | |
4104 | pSMB->SetupCount = 1; | |
4105 | pSMB->Reserved3 = 0; | |
4106 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4107 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4108 | pSMB->SearchCount = | |
630f3f0c | 4109 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4110 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4111 | pSMB->ResumeKey = psrch_inf->resume_key; | |
4112 | pSMB->SearchFlags = | |
4113 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
4114 | ||
4115 | name_len = psrch_inf->resume_name_len; | |
4116 | params += name_len; | |
790fe579 | 4117 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4118 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4119 | byte_count += name_len; | |
ef6724e3 SF |
4120 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4121 | pSMB->ResumeFileName[name_len] = 0; | |
4122 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4123 | } else { |
4124 | rc = -EINVAL; | |
4125 | goto FNext2_err_exit; | |
4126 | } | |
4127 | byte_count = params + 1 /* pad */ ; | |
4128 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4129 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4130 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4131 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4132 | |
1da177e4 LT |
4133 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4134 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4135 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
4136 | if (rc) { |
4137 | if (rc == -EBADF) { | |
4b18f2a9 | 4138 | psrch_inf->endOfSearch = true; |
6353450a | 4139 | cifs_buf_release(pSMB); |
50c2f753 | 4140 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4141 | } else |
b6b38f70 | 4142 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4143 | } else { /* decode response */ |
4144 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4145 | |
790fe579 | 4146 | if (rc == 0) { |
b77d753c SF |
4147 | unsigned int lnoff; |
4148 | ||
1da177e4 LT |
4149 | /* BB fixme add lock for file (srch_info) struct here */ |
4150 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4151 | psrch_inf->unicode = true; |
1da177e4 | 4152 | else |
4b18f2a9 | 4153 | psrch_inf->unicode = false; |
1da177e4 LT |
4154 | response_data = (char *) &pSMBr->hdr.Protocol + |
4155 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4156 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4157 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4158 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4159 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4160 | cifs_small_buf_release( |
4161 | psrch_inf->ntwrk_buf_start); | |
4162 | else | |
4163 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4164 | psrch_inf->srch_entries_start = response_data; |
4165 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4166 | psrch_inf->smallBuf = 0; |
790fe579 | 4167 | if (parms->EndofSearch) |
4b18f2a9 | 4168 | psrch_inf->endOfSearch = true; |
1da177e4 | 4169 | else |
4b18f2a9 | 4170 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4171 | psrch_inf->entries_in_buffer = |
4172 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4173 | psrch_inf->index_of_last_entry += |
4174 | psrch_inf->entries_in_buffer; | |
b77d753c | 4175 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4176 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4177 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4178 | psrch_inf->last_entry = NULL; |
4179 | return rc; | |
4180 | } else | |
4181 | psrch_inf->last_entry = | |
4182 | psrch_inf->srch_entries_start + lnoff; | |
4183 | ||
b6b38f70 JP |
4184 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4185 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4186 | |
4187 | /* BB fixme add unlock here */ | |
4188 | } | |
4189 | ||
4190 | } | |
4191 | ||
4192 | /* BB On error, should we leave previous search buf (and count and | |
4193 | last entry fields) intact or free the previous one? */ | |
4194 | ||
4195 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4196 | since file handle passed in no longer valid */ | |
4197 | FNext2_err_exit: | |
4198 | if (rc != 0) | |
4199 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4200 | return rc; |
4201 | } | |
4202 | ||
4203 | int | |
96daf2b0 | 4204 | CIFSFindClose(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4205 | const __u16 searchHandle) |
1da177e4 LT |
4206 | { |
4207 | int rc = 0; | |
4208 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4209 | |
b6b38f70 | 4210 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4211 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4212 | ||
4213 | /* no sense returning error if session restarted | |
4214 | as file handle has been closed */ | |
790fe579 | 4215 | if (rc == -EAGAIN) |
1da177e4 LT |
4216 | return 0; |
4217 | if (rc) | |
4218 | return rc; | |
4219 | ||
1da177e4 LT |
4220 | pSMB->FileID = searchHandle; |
4221 | pSMB->ByteCount = 0; | |
133672ef | 4222 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4223 | if (rc) |
b6b38f70 | 4224 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4225 | |
a4544347 | 4226 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
4227 | |
4228 | /* Since session is dead, search handle closed on server already */ | |
4229 | if (rc == -EAGAIN) | |
4230 | rc = 0; | |
4231 | ||
4232 | return rc; | |
4233 | } | |
4234 | ||
1da177e4 | 4235 | int |
96daf2b0 | 4236 | CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4237 | const unsigned char *searchName, |
ad7a2926 | 4238 | __u64 *inode_number, |
50c2f753 | 4239 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4240 | { |
4241 | int rc = 0; | |
4242 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4243 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4244 | int name_len, bytes_returned; | |
4245 | __u16 params, byte_count; | |
4246 | ||
b6b38f70 | 4247 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 4248 | if (tcon == NULL) |
50c2f753 | 4249 | return -ENODEV; |
1da177e4 LT |
4250 | |
4251 | GetInodeNumberRetry: | |
4252 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4253 | (void **) &pSMBr); |
1da177e4 LT |
4254 | if (rc) |
4255 | return rc; | |
4256 | ||
1da177e4 LT |
4257 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4258 | name_len = | |
b1a45695 | 4259 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 4260 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4261 | name_len++; /* trailing null */ |
4262 | name_len *= 2; | |
50c2f753 | 4263 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4264 | name_len = strnlen(searchName, PATH_MAX); |
4265 | name_len++; /* trailing null */ | |
4266 | strncpy(pSMB->FileName, searchName, name_len); | |
4267 | } | |
4268 | ||
4269 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4270 | pSMB->TotalDataCount = 0; | |
4271 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4272 | /* BB find exact max data count below from sess structure BB */ | |
4273 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4274 | pSMB->MaxSetupCount = 0; | |
4275 | pSMB->Reserved = 0; | |
4276 | pSMB->Flags = 0; | |
4277 | pSMB->Timeout = 0; | |
4278 | pSMB->Reserved2 = 0; | |
4279 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4280 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4281 | pSMB->DataCount = 0; |
4282 | pSMB->DataOffset = 0; | |
4283 | pSMB->SetupCount = 1; | |
4284 | pSMB->Reserved3 = 0; | |
4285 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4286 | byte_count = params + 1 /* pad */ ; | |
4287 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4288 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4289 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4290 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4291 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4292 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4293 | ||
4294 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4295 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4296 | if (rc) { | |
b6b38f70 | 4297 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4298 | } else { |
4299 | /* decode response */ | |
4300 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4301 | /* BB also check enough total bytes returned */ |
820a803f | 4302 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4303 | /* If rc should we check for EOPNOSUPP and |
4304 | disable the srvino flag? or in caller? */ | |
4305 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4306 | else { |
1da177e4 LT |
4307 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4308 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4309 | struct file_internal_info *pfinfo; |
1da177e4 | 4310 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4311 | if (count < 8) { |
b6b38f70 | 4312 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4313 | rc = -EIO; |
4314 | goto GetInodeNumOut; | |
4315 | } | |
4316 | pfinfo = (struct file_internal_info *) | |
4317 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4318 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4319 | } |
4320 | } | |
4321 | GetInodeNumOut: | |
4322 | cifs_buf_release(pSMB); | |
4323 | if (rc == -EAGAIN) | |
4324 | goto GetInodeNumberRetry; | |
4325 | return rc; | |
4326 | } | |
1da177e4 | 4327 | |
fec4585f IM |
4328 | /* parses DFS refferal V3 structure |
4329 | * caller is responsible for freeing target_nodes | |
4330 | * returns: | |
4331 | * on success - 0 | |
4332 | * on failure - errno | |
4333 | */ | |
4334 | static int | |
a1fe78f1 | 4335 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4336 | unsigned int *num_of_nodes, |
4337 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4338 | const struct nls_table *nls_codepage, int remap, |
4339 | const char *searchName) | |
fec4585f IM |
4340 | { |
4341 | int i, rc = 0; | |
4342 | char *data_end; | |
4343 | bool is_unicode; | |
4344 | struct dfs_referral_level_3 *ref; | |
4345 | ||
5ca33c6a HH |
4346 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4347 | is_unicode = true; | |
4348 | else | |
4349 | is_unicode = false; | |
fec4585f IM |
4350 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4351 | ||
4352 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4353 | cERROR(1, "num_referrals: must be at least > 0," |
4354 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4355 | rc = -EINVAL; |
a1fe78f1 | 4356 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4357 | } |
4358 | ||
4359 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4360 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4361 | cERROR(1, "Referrals of V%d version are not supported," |
4362 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4363 | rc = -EINVAL; |
a1fe78f1 | 4364 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4365 | } |
4366 | ||
4367 | /* get the upper boundary of the resp buffer */ | |
4368 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4369 | le16_to_cpu(pSMBr->t2.DataCount); | |
4370 | ||
f19159dc | 4371 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4372 | *num_of_nodes, |
b6b38f70 | 4373 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4374 | |
4375 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4376 | *num_of_nodes, GFP_KERNEL); | |
4377 | if (*target_nodes == NULL) { | |
b6b38f70 | 4378 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4379 | rc = -ENOMEM; |
a1fe78f1 | 4380 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4381 | } |
4382 | ||
3ad2f3fb | 4383 | /* collect necessary data from referrals */ |
fec4585f IM |
4384 | for (i = 0; i < *num_of_nodes; i++) { |
4385 | char *temp; | |
4386 | int max_len; | |
4387 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4388 | ||
0e0d2cf3 | 4389 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4390 | if (is_unicode) { |
331c3135 JL |
4391 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4392 | GFP_KERNEL); | |
2920ee2b SF |
4393 | if (tmp == NULL) { |
4394 | rc = -ENOMEM; | |
4395 | goto parse_DFS_referrals_exit; | |
4396 | } | |
2c55608f IM |
4397 | cifsConvertToUCS((__le16 *) tmp, searchName, |
4398 | PATH_MAX, nls_codepage, remap); | |
69f801fc JL |
4399 | node->path_consumed = cifs_ucs2_bytes(tmp, |
4400 | le16_to_cpu(pSMBr->PathConsumed), | |
2c55608f IM |
4401 | nls_codepage); |
4402 | kfree(tmp); | |
4403 | } else | |
4404 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4405 | ||
fec4585f IM |
4406 | node->server_type = le16_to_cpu(ref->ServerType); |
4407 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4408 | ||
4409 | /* copy DfsPath */ | |
4410 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4411 | max_len = data_end - temp; | |
d185cda7 SF |
4412 | node->path_name = cifs_strndup_from_ucs(temp, max_len, |
4413 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4414 | if (!node->path_name) { |
4415 | rc = -ENOMEM; | |
a1fe78f1 | 4416 | goto parse_DFS_referrals_exit; |
066ce689 | 4417 | } |
fec4585f IM |
4418 | |
4419 | /* copy link target UNC */ | |
4420 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4421 | max_len = data_end - temp; | |
d185cda7 SF |
4422 | node->node_name = cifs_strndup_from_ucs(temp, max_len, |
4423 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4424 | if (!node->node_name) |
4425 | rc = -ENOMEM; | |
fec4585f IM |
4426 | } |
4427 | ||
a1fe78f1 | 4428 | parse_DFS_referrals_exit: |
fec4585f IM |
4429 | if (rc) { |
4430 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4431 | *target_nodes = NULL; | |
4432 | *num_of_nodes = 0; | |
4433 | } | |
4434 | return rc; | |
4435 | } | |
4436 | ||
1da177e4 | 4437 | int |
96daf2b0 | 4438 | CIFSGetDFSRefer(const int xid, struct cifs_ses *ses, |
1da177e4 | 4439 | const unsigned char *searchName, |
c2cf07d5 SF |
4440 | struct dfs_info3_param **target_nodes, |
4441 | unsigned int *num_of_nodes, | |
737b758c | 4442 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4443 | { |
4444 | /* TRANS2_GET_DFS_REFERRAL */ | |
4445 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4446 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4447 | int rc = 0; |
4448 | int bytes_returned; | |
4449 | int name_len; | |
1da177e4 | 4450 | __u16 params, byte_count; |
c2cf07d5 SF |
4451 | *num_of_nodes = 0; |
4452 | *target_nodes = NULL; | |
1da177e4 | 4453 | |
b6b38f70 | 4454 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4455 | if (ses == NULL) |
4456 | return -ENODEV; | |
4457 | getDFSRetry: | |
4458 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4459 | (void **) &pSMBr); | |
4460 | if (rc) | |
4461 | return rc; | |
50c2f753 SF |
4462 | |
4463 | /* server pointer checked in called function, | |
1982c344 SF |
4464 | but should never be null here anyway */ |
4465 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4466 | pSMB->hdr.Tid = ses->ipc_tid; |
4467 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4468 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4469 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4470 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4471 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4472 | |
4473 | if (ses->capabilities & CAP_UNICODE) { | |
4474 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4475 | name_len = | |
b1a45695 | 4476 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4477 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4478 | name_len++; /* trailing null */ |
4479 | name_len *= 2; | |
50c2f753 | 4480 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4481 | name_len = strnlen(searchName, PATH_MAX); |
4482 | name_len++; /* trailing null */ | |
4483 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4484 | } | |
4485 | ||
790fe579 | 4486 | if (ses->server) { |
96daf2b0 | 4487 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4488 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4489 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4490 | } | |
4491 | ||
50c2f753 | 4492 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4493 | |
1da177e4 LT |
4494 | params = 2 /* level */ + name_len /*includes null */ ; |
4495 | pSMB->TotalDataCount = 0; | |
4496 | pSMB->DataCount = 0; | |
4497 | pSMB->DataOffset = 0; | |
4498 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4499 | /* BB find exact max SMB PDU from sess structure BB */ |
4500 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4501 | pSMB->MaxSetupCount = 0; |
4502 | pSMB->Reserved = 0; | |
4503 | pSMB->Flags = 0; | |
4504 | pSMB->Timeout = 0; | |
4505 | pSMB->Reserved2 = 0; | |
4506 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4507 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4508 | pSMB->SetupCount = 1; |
4509 | pSMB->Reserved3 = 0; | |
4510 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4511 | byte_count = params + 3 /* pad */ ; | |
4512 | pSMB->ParameterCount = cpu_to_le16(params); | |
4513 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4514 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4515 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4516 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4517 | ||
4518 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4519 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4520 | if (rc) { | |
b6b38f70 | 4521 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4522 | goto GetDFSRefExit; |
4523 | } | |
4524 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4525 | |
c2cf07d5 | 4526 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4527 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4528 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4529 | goto GetDFSRefExit; |
4530 | } | |
c2cf07d5 | 4531 | |
b6b38f70 | 4532 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4533 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4534 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4535 | |
fec4585f | 4536 | /* parse returned result into more usable form */ |
a1fe78f1 | 4537 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4538 | target_nodes, nls_codepage, remap, |
4539 | searchName); | |
c2cf07d5 | 4540 | |
1da177e4 | 4541 | GetDFSRefExit: |
0d817bc0 | 4542 | cifs_buf_release(pSMB); |
1da177e4 LT |
4543 | |
4544 | if (rc == -EAGAIN) | |
4545 | goto getDFSRetry; | |
4546 | ||
4547 | return rc; | |
4548 | } | |
4549 | ||
20962438 SF |
4550 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4551 | int | |
96daf2b0 | 4552 | SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
20962438 SF |
4553 | { |
4554 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4555 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4556 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4557 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4558 | int rc = 0; | |
4559 | int bytes_returned = 0; | |
4560 | __u16 params, byte_count; | |
4561 | ||
b6b38f70 | 4562 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4563 | oldQFSInfoRetry: |
4564 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4565 | (void **) &pSMBr); | |
4566 | if (rc) | |
4567 | return rc; | |
20962438 SF |
4568 | |
4569 | params = 2; /* level */ | |
4570 | pSMB->TotalDataCount = 0; | |
4571 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4572 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4573 | pSMB->MaxSetupCount = 0; | |
4574 | pSMB->Reserved = 0; | |
4575 | pSMB->Flags = 0; | |
4576 | pSMB->Timeout = 0; | |
4577 | pSMB->Reserved2 = 0; | |
4578 | byte_count = params + 1 /* pad */ ; | |
4579 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4580 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4581 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4582 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4583 | pSMB->DataCount = 0; | |
4584 | pSMB->DataOffset = 0; | |
4585 | pSMB->SetupCount = 1; | |
4586 | pSMB->Reserved3 = 0; | |
4587 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4588 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4589 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4590 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4591 | ||
4592 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4593 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4594 | if (rc) { | |
b6b38f70 | 4595 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4596 | } else { /* decode response */ |
4597 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4598 | ||
820a803f | 4599 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4600 | rc = -EIO; /* bad smb */ |
4601 | else { | |
4602 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4603 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4604 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4605 | |
50c2f753 | 4606 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4607 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4608 | FSData->f_bsize = | |
4609 | le16_to_cpu(response_data->BytesPerSector) * | |
4610 | le32_to_cpu(response_data-> | |
4611 | SectorsPerAllocationUnit); | |
4612 | FSData->f_blocks = | |
50c2f753 | 4613 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4614 | FSData->f_bfree = FSData->f_bavail = |
4615 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4616 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4617 | (unsigned long long)FSData->f_blocks, | |
4618 | (unsigned long long)FSData->f_bfree, | |
4619 | FSData->f_bsize); | |
20962438 SF |
4620 | } |
4621 | } | |
4622 | cifs_buf_release(pSMB); | |
4623 | ||
4624 | if (rc == -EAGAIN) | |
4625 | goto oldQFSInfoRetry; | |
4626 | ||
4627 | return rc; | |
4628 | } | |
4629 | ||
1da177e4 | 4630 | int |
96daf2b0 | 4631 | CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4632 | { |
4633 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4634 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4635 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4636 | FILE_SYSTEM_INFO *response_data; | |
4637 | int rc = 0; | |
4638 | int bytes_returned = 0; | |
4639 | __u16 params, byte_count; | |
4640 | ||
b6b38f70 | 4641 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4642 | QFSInfoRetry: |
4643 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4644 | (void **) &pSMBr); | |
4645 | if (rc) | |
4646 | return rc; | |
4647 | ||
4648 | params = 2; /* level */ | |
4649 | pSMB->TotalDataCount = 0; | |
4650 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4651 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4652 | pSMB->MaxSetupCount = 0; |
4653 | pSMB->Reserved = 0; | |
4654 | pSMB->Flags = 0; | |
4655 | pSMB->Timeout = 0; | |
4656 | pSMB->Reserved2 = 0; | |
4657 | byte_count = params + 1 /* pad */ ; | |
4658 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4659 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4660 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4661 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4662 | pSMB->DataCount = 0; |
4663 | pSMB->DataOffset = 0; | |
4664 | pSMB->SetupCount = 1; | |
4665 | pSMB->Reserved3 = 0; | |
4666 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4667 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4668 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4669 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4670 | ||
4671 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4672 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4673 | if (rc) { | |
b6b38f70 | 4674 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4675 | } else { /* decode response */ |
50c2f753 | 4676 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4677 | |
820a803f | 4678 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4679 | rc = -EIO; /* bad smb */ |
4680 | else { | |
4681 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4682 | |
4683 | response_data = | |
4684 | (FILE_SYSTEM_INFO | |
4685 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4686 | data_offset); | |
4687 | FSData->f_bsize = | |
4688 | le32_to_cpu(response_data->BytesPerSector) * | |
4689 | le32_to_cpu(response_data-> | |
4690 | SectorsPerAllocationUnit); | |
4691 | FSData->f_blocks = | |
4692 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4693 | FSData->f_bfree = FSData->f_bavail = | |
4694 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4695 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4696 | (unsigned long long)FSData->f_blocks, | |
4697 | (unsigned long long)FSData->f_bfree, | |
4698 | FSData->f_bsize); | |
1da177e4 LT |
4699 | } |
4700 | } | |
4701 | cifs_buf_release(pSMB); | |
4702 | ||
4703 | if (rc == -EAGAIN) | |
4704 | goto QFSInfoRetry; | |
4705 | ||
4706 | return rc; | |
4707 | } | |
4708 | ||
4709 | int | |
96daf2b0 | 4710 | CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4711 | { |
4712 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4713 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4714 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4715 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4716 | int rc = 0; | |
4717 | int bytes_returned = 0; | |
4718 | __u16 params, byte_count; | |
4719 | ||
b6b38f70 | 4720 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
4721 | QFSAttributeRetry: |
4722 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4723 | (void **) &pSMBr); | |
4724 | if (rc) | |
4725 | return rc; | |
4726 | ||
4727 | params = 2; /* level */ | |
4728 | pSMB->TotalDataCount = 0; | |
4729 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4730 | /* BB find exact max SMB PDU from sess structure BB */ |
4731 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4732 | pSMB->MaxSetupCount = 0; |
4733 | pSMB->Reserved = 0; | |
4734 | pSMB->Flags = 0; | |
4735 | pSMB->Timeout = 0; | |
4736 | pSMB->Reserved2 = 0; | |
4737 | byte_count = params + 1 /* pad */ ; | |
4738 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4739 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4740 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4741 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4742 | pSMB->DataCount = 0; |
4743 | pSMB->DataOffset = 0; | |
4744 | pSMB->SetupCount = 1; | |
4745 | pSMB->Reserved3 = 0; | |
4746 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4747 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4748 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4749 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4750 | ||
4751 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4752 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4753 | if (rc) { | |
b6b38f70 | 4754 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
4755 | } else { /* decode response */ |
4756 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4757 | ||
820a803f | 4758 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4759 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4760 | rc = -EIO; /* bad smb */ |
4761 | } else { | |
4762 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4763 | response_data = | |
4764 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4765 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4766 | data_offset); | |
4767 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4768 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4769 | } |
4770 | } | |
4771 | cifs_buf_release(pSMB); | |
4772 | ||
4773 | if (rc == -EAGAIN) | |
4774 | goto QFSAttributeRetry; | |
4775 | ||
4776 | return rc; | |
4777 | } | |
4778 | ||
4779 | int | |
96daf2b0 | 4780 | CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4781 | { |
4782 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4783 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4784 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4785 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4786 | int rc = 0; | |
4787 | int bytes_returned = 0; | |
4788 | __u16 params, byte_count; | |
4789 | ||
b6b38f70 | 4790 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
4791 | QFSDeviceRetry: |
4792 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4793 | (void **) &pSMBr); | |
4794 | if (rc) | |
4795 | return rc; | |
4796 | ||
4797 | params = 2; /* level */ | |
4798 | pSMB->TotalDataCount = 0; | |
4799 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4800 | /* BB find exact max SMB PDU from sess structure BB */ |
4801 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4802 | pSMB->MaxSetupCount = 0; |
4803 | pSMB->Reserved = 0; | |
4804 | pSMB->Flags = 0; | |
4805 | pSMB->Timeout = 0; | |
4806 | pSMB->Reserved2 = 0; | |
4807 | byte_count = params + 1 /* pad */ ; | |
4808 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4809 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4810 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4811 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4812 | |
4813 | pSMB->DataCount = 0; | |
4814 | pSMB->DataOffset = 0; | |
4815 | pSMB->SetupCount = 1; | |
4816 | pSMB->Reserved3 = 0; | |
4817 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4818 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4819 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4820 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4821 | ||
4822 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4823 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4824 | if (rc) { | |
b6b38f70 | 4825 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
4826 | } else { /* decode response */ |
4827 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4828 | ||
820a803f JL |
4829 | if (rc || get_bcc(&pSMBr->hdr) < |
4830 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4831 | rc = -EIO; /* bad smb */ |
4832 | else { | |
4833 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4834 | response_data = | |
737b758c SF |
4835 | (FILE_SYSTEM_DEVICE_INFO *) |
4836 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4837 | data_offset); |
4838 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4839 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4840 | } |
4841 | } | |
4842 | cifs_buf_release(pSMB); | |
4843 | ||
4844 | if (rc == -EAGAIN) | |
4845 | goto QFSDeviceRetry; | |
4846 | ||
4847 | return rc; | |
4848 | } | |
4849 | ||
4850 | int | |
96daf2b0 | 4851 | CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4852 | { |
4853 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4854 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4855 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4856 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4857 | int rc = 0; | |
4858 | int bytes_returned = 0; | |
4859 | __u16 params, byte_count; | |
4860 | ||
b6b38f70 | 4861 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 4862 | QFSUnixRetry: |
f569599a JL |
4863 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4864 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4865 | if (rc) |
4866 | return rc; | |
4867 | ||
4868 | params = 2; /* level */ | |
4869 | pSMB->TotalDataCount = 0; | |
4870 | pSMB->DataCount = 0; | |
4871 | pSMB->DataOffset = 0; | |
4872 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4873 | /* BB find exact max SMB PDU from sess structure BB */ |
4874 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4875 | pSMB->MaxSetupCount = 0; |
4876 | pSMB->Reserved = 0; | |
4877 | pSMB->Flags = 0; | |
4878 | pSMB->Timeout = 0; | |
4879 | pSMB->Reserved2 = 0; | |
4880 | byte_count = params + 1 /* pad */ ; | |
4881 | pSMB->ParameterCount = cpu_to_le16(params); | |
4882 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4883 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4884 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4885 | pSMB->SetupCount = 1; |
4886 | pSMB->Reserved3 = 0; | |
4887 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4888 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4889 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4890 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4891 | ||
4892 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4893 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4894 | if (rc) { | |
b6b38f70 | 4895 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
4896 | } else { /* decode response */ |
4897 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4898 | ||
820a803f | 4899 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4900 | rc = -EIO; /* bad smb */ |
4901 | } else { | |
4902 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4903 | response_data = | |
4904 | (FILE_SYSTEM_UNIX_INFO | |
4905 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4906 | data_offset); | |
4907 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4908 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4909 | } |
4910 | } | |
4911 | cifs_buf_release(pSMB); | |
4912 | ||
4913 | if (rc == -EAGAIN) | |
4914 | goto QFSUnixRetry; | |
4915 | ||
4916 | ||
4917 | return rc; | |
4918 | } | |
4919 | ||
ac67055e | 4920 | int |
96daf2b0 | 4921 | CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
4922 | { |
4923 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4924 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4925 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4926 | int rc = 0; | |
4927 | int bytes_returned = 0; | |
4928 | __u16 params, param_offset, offset, byte_count; | |
4929 | ||
b6b38f70 | 4930 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 4931 | SETFSUnixRetry: |
f26282c9 | 4932 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4933 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4934 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4935 | if (rc) |
4936 | return rc; | |
4937 | ||
4938 | params = 4; /* 2 bytes zero followed by info level. */ | |
4939 | pSMB->MaxSetupCount = 0; | |
4940 | pSMB->Reserved = 0; | |
4941 | pSMB->Flags = 0; | |
4942 | pSMB->Timeout = 0; | |
4943 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4944 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4945 | - 4; | |
ac67055e JA |
4946 | offset = param_offset + params; |
4947 | ||
4948 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4949 | /* BB find exact max SMB PDU from sess structure BB */ |
4950 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4951 | pSMB->SetupCount = 1; |
4952 | pSMB->Reserved3 = 0; | |
4953 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4954 | byte_count = 1 /* pad */ + params + 12; | |
4955 | ||
4956 | pSMB->DataCount = cpu_to_le16(12); | |
4957 | pSMB->ParameterCount = cpu_to_le16(params); | |
4958 | pSMB->TotalDataCount = pSMB->DataCount; | |
4959 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4960 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4961 | pSMB->DataOffset = cpu_to_le16(offset); | |
4962 | ||
4963 | /* Params. */ | |
4964 | pSMB->FileNum = 0; | |
4965 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4966 | ||
4967 | /* Data. */ | |
4968 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4969 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4970 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4971 | ||
be8e3b00 | 4972 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4973 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4974 | ||
4975 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4976 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4977 | if (rc) { | |
b6b38f70 | 4978 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
4979 | } else { /* decode response */ |
4980 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4981 | if (rc) |
ac67055e | 4982 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4983 | } |
4984 | cifs_buf_release(pSMB); | |
4985 | ||
4986 | if (rc == -EAGAIN) | |
4987 | goto SETFSUnixRetry; | |
4988 | ||
4989 | return rc; | |
4990 | } | |
4991 | ||
4992 | ||
1da177e4 LT |
4993 | |
4994 | int | |
96daf2b0 | 4995 | CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon, |
737b758c | 4996 | struct kstatfs *FSData) |
1da177e4 LT |
4997 | { |
4998 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4999 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5000 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5001 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5002 | int rc = 0; | |
5003 | int bytes_returned = 0; | |
5004 | __u16 params, byte_count; | |
5005 | ||
b6b38f70 | 5006 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5007 | QFSPosixRetry: |
5008 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5009 | (void **) &pSMBr); | |
5010 | if (rc) | |
5011 | return rc; | |
5012 | ||
5013 | params = 2; /* level */ | |
5014 | pSMB->TotalDataCount = 0; | |
5015 | pSMB->DataCount = 0; | |
5016 | pSMB->DataOffset = 0; | |
5017 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5018 | /* BB find exact max SMB PDU from sess structure BB */ |
5019 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5020 | pSMB->MaxSetupCount = 0; |
5021 | pSMB->Reserved = 0; | |
5022 | pSMB->Flags = 0; | |
5023 | pSMB->Timeout = 0; | |
5024 | pSMB->Reserved2 = 0; | |
5025 | byte_count = params + 1 /* pad */ ; | |
5026 | pSMB->ParameterCount = cpu_to_le16(params); | |
5027 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5028 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5029 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5030 | pSMB->SetupCount = 1; |
5031 | pSMB->Reserved3 = 0; | |
5032 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5033 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5034 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5035 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5036 | ||
5037 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5038 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5039 | if (rc) { | |
b6b38f70 | 5040 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5041 | } else { /* decode response */ |
5042 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5043 | ||
820a803f | 5044 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5045 | rc = -EIO; /* bad smb */ |
5046 | } else { | |
5047 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5048 | response_data = | |
5049 | (FILE_SYSTEM_POSIX_INFO | |
5050 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5051 | data_offset); | |
5052 | FSData->f_bsize = | |
5053 | le32_to_cpu(response_data->BlockSize); | |
5054 | FSData->f_blocks = | |
5055 | le64_to_cpu(response_data->TotalBlocks); | |
5056 | FSData->f_bfree = | |
5057 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5058 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5059 | FSData->f_bavail = FSData->f_bfree; |
5060 | } else { | |
5061 | FSData->f_bavail = | |
50c2f753 | 5062 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5063 | } |
790fe579 | 5064 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5065 | FSData->f_files = |
50c2f753 | 5066 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5067 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5068 | FSData->f_ffree = |
50c2f753 | 5069 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5070 | } |
5071 | } | |
5072 | cifs_buf_release(pSMB); | |
5073 | ||
5074 | if (rc == -EAGAIN) | |
5075 | goto QFSPosixRetry; | |
5076 | ||
5077 | return rc; | |
5078 | } | |
5079 | ||
5080 | ||
50c2f753 SF |
5081 | /* We can not use write of zero bytes trick to |
5082 | set file size due to need for large file support. Also note that | |
5083 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5084 | routine which is only needed to work around a sharing violation bug |
5085 | in Samba which this routine can run into */ | |
5086 | ||
5087 | int | |
96daf2b0 | 5088 | CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName, |
4b18f2a9 | 5089 | __u64 size, bool SetAllocation, |
737b758c | 5090 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5091 | { |
5092 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5093 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5094 | struct file_end_of_file_info *parm_data; | |
5095 | int name_len; | |
5096 | int rc = 0; | |
5097 | int bytes_returned = 0; | |
5098 | __u16 params, byte_count, data_count, param_offset, offset; | |
5099 | ||
b6b38f70 | 5100 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5101 | SetEOFRetry: |
5102 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5103 | (void **) &pSMBr); | |
5104 | if (rc) | |
5105 | return rc; | |
5106 | ||
5107 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5108 | name_len = | |
b1a45695 | 5109 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5110 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5111 | name_len++; /* trailing null */ |
5112 | name_len *= 2; | |
3e87d803 | 5113 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5114 | name_len = strnlen(fileName, PATH_MAX); |
5115 | name_len++; /* trailing null */ | |
5116 | strncpy(pSMB->FileName, fileName, name_len); | |
5117 | } | |
5118 | params = 6 + name_len; | |
26f57364 | 5119 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5120 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5121 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5122 | pSMB->MaxSetupCount = 0; |
5123 | pSMB->Reserved = 0; | |
5124 | pSMB->Flags = 0; | |
5125 | pSMB->Timeout = 0; | |
5126 | pSMB->Reserved2 = 0; | |
5127 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5128 | InformationLevel) - 4; |
1da177e4 | 5129 | offset = param_offset + params; |
790fe579 | 5130 | if (SetAllocation) { |
50c2f753 SF |
5131 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5132 | pSMB->InformationLevel = | |
5133 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5134 | else | |
5135 | pSMB->InformationLevel = | |
5136 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5137 | } else /* Set File Size */ { | |
1da177e4 LT |
5138 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5139 | pSMB->InformationLevel = | |
50c2f753 | 5140 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5141 | else |
5142 | pSMB->InformationLevel = | |
50c2f753 | 5143 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5144 | } |
5145 | ||
5146 | parm_data = | |
5147 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5148 | offset); | |
5149 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5150 | pSMB->DataOffset = cpu_to_le16(offset); | |
5151 | pSMB->SetupCount = 1; | |
5152 | pSMB->Reserved3 = 0; | |
5153 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5154 | byte_count = 3 /* pad */ + params + data_count; | |
5155 | pSMB->DataCount = cpu_to_le16(data_count); | |
5156 | pSMB->TotalDataCount = pSMB->DataCount; | |
5157 | pSMB->ParameterCount = cpu_to_le16(params); | |
5158 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5159 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5160 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5161 | parm_data->FileSize = cpu_to_le64(size); |
5162 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5163 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5164 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5165 | if (rc) |
b6b38f70 | 5166 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5167 | |
5168 | cifs_buf_release(pSMB); | |
5169 | ||
5170 | if (rc == -EAGAIN) | |
5171 | goto SetEOFRetry; | |
5172 | ||
5173 | return rc; | |
5174 | } | |
5175 | ||
5176 | int | |
96daf2b0 | 5177 | CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size, |
4b18f2a9 | 5178 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5179 | { |
5180 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5181 | struct file_end_of_file_info *parm_data; |
5182 | int rc = 0; | |
1da177e4 LT |
5183 | __u16 params, param_offset, offset, byte_count, count; |
5184 | ||
b6b38f70 JP |
5185 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5186 | (long long)size); | |
cd63499c SF |
5187 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5188 | ||
1da177e4 LT |
5189 | if (rc) |
5190 | return rc; | |
5191 | ||
5192 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5193 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5194 | |
1da177e4 LT |
5195 | params = 6; |
5196 | pSMB->MaxSetupCount = 0; | |
5197 | pSMB->Reserved = 0; | |
5198 | pSMB->Flags = 0; | |
5199 | pSMB->Timeout = 0; | |
5200 | pSMB->Reserved2 = 0; | |
5201 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5202 | offset = param_offset + params; | |
5203 | ||
1da177e4 LT |
5204 | count = sizeof(struct file_end_of_file_info); |
5205 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5206 | /* BB find exact max SMB PDU from sess structure BB */ |
5207 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5208 | pSMB->SetupCount = 1; |
5209 | pSMB->Reserved3 = 0; | |
5210 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5211 | byte_count = 3 /* pad */ + params + count; | |
5212 | pSMB->DataCount = cpu_to_le16(count); | |
5213 | pSMB->ParameterCount = cpu_to_le16(params); | |
5214 | pSMB->TotalDataCount = pSMB->DataCount; | |
5215 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5216 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5217 | parm_data = | |
50c2f753 SF |
5218 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5219 | + offset); | |
1da177e4 LT |
5220 | pSMB->DataOffset = cpu_to_le16(offset); |
5221 | parm_data->FileSize = cpu_to_le64(size); | |
5222 | pSMB->Fid = fid; | |
790fe579 | 5223 | if (SetAllocation) { |
1da177e4 LT |
5224 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5225 | pSMB->InformationLevel = | |
5226 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5227 | else | |
5228 | pSMB->InformationLevel = | |
5229 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5230 | } else /* Set File Size */ { |
1da177e4 LT |
5231 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5232 | pSMB->InformationLevel = | |
50c2f753 | 5233 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5234 | else |
5235 | pSMB->InformationLevel = | |
50c2f753 | 5236 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5237 | } |
5238 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5239 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5240 | pSMB->ByteCount = cpu_to_le16(byte_count); |
133672ef | 5241 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 | 5242 | if (rc) { |
b6b38f70 | 5243 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5244 | } |
5245 | ||
50c2f753 | 5246 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5247 | since file handle passed in no longer valid */ |
5248 | ||
5249 | return rc; | |
5250 | } | |
5251 | ||
50c2f753 | 5252 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5253 | an open handle, rather than by pathname - this is awkward due to |
5254 | potential access conflicts on the open, but it is unavoidable for these | |
5255 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5256 | time and resort to the original setpathinfo level which takes the ancient | |
5257 | DOS time format with 2 second granularity */ | |
5258 | int | |
96daf2b0 | 5259 | CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5260 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5261 | { |
5262 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5263 | char *data_offset; |
5264 | int rc = 0; | |
1da177e4 LT |
5265 | __u16 params, param_offset, offset, byte_count, count; |
5266 | ||
b6b38f70 | 5267 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5268 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5269 | ||
1da177e4 LT |
5270 | if (rc) |
5271 | return rc; | |
5272 | ||
2dd2dfa0 JL |
5273 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5274 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5275 | |
1da177e4 LT |
5276 | params = 6; |
5277 | pSMB->MaxSetupCount = 0; | |
5278 | pSMB->Reserved = 0; | |
5279 | pSMB->Flags = 0; | |
5280 | pSMB->Timeout = 0; | |
5281 | pSMB->Reserved2 = 0; | |
5282 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5283 | offset = param_offset + params; | |
5284 | ||
50c2f753 | 5285 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 5286 | |
26f57364 | 5287 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5288 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5289 | /* BB find max SMB PDU from sess */ |
5290 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5291 | pSMB->SetupCount = 1; |
5292 | pSMB->Reserved3 = 0; | |
5293 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5294 | byte_count = 3 /* pad */ + params + count; | |
5295 | pSMB->DataCount = cpu_to_le16(count); | |
5296 | pSMB->ParameterCount = cpu_to_le16(params); | |
5297 | pSMB->TotalDataCount = pSMB->DataCount; | |
5298 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5299 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5300 | pSMB->DataOffset = cpu_to_le16(offset); | |
5301 | pSMB->Fid = fid; | |
5302 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5303 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5304 | else | |
5305 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5306 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5307 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5308 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5309 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 5310 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 5311 | if (rc) |
b6b38f70 | 5312 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5313 | |
50c2f753 | 5314 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5315 | since file handle passed in no longer valid */ |
5316 | ||
5317 | return rc; | |
5318 | } | |
5319 | ||
6d22f098 | 5320 | int |
96daf2b0 | 5321 | CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5322 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5323 | { | |
5324 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5325 | char *data_offset; | |
5326 | int rc = 0; | |
5327 | __u16 params, param_offset, offset, byte_count, count; | |
5328 | ||
b6b38f70 | 5329 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5330 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5331 | ||
5332 | if (rc) | |
5333 | return rc; | |
5334 | ||
5335 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5336 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5337 | ||
5338 | params = 6; | |
5339 | pSMB->MaxSetupCount = 0; | |
5340 | pSMB->Reserved = 0; | |
5341 | pSMB->Flags = 0; | |
5342 | pSMB->Timeout = 0; | |
5343 | pSMB->Reserved2 = 0; | |
5344 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5345 | offset = param_offset + params; | |
5346 | ||
5347 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5348 | ||
5349 | count = 1; | |
5350 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5351 | /* BB find max SMB PDU from sess */ | |
5352 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5353 | pSMB->SetupCount = 1; | |
5354 | pSMB->Reserved3 = 0; | |
5355 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5356 | byte_count = 3 /* pad */ + params + count; | |
5357 | pSMB->DataCount = cpu_to_le16(count); | |
5358 | pSMB->ParameterCount = cpu_to_le16(params); | |
5359 | pSMB->TotalDataCount = pSMB->DataCount; | |
5360 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5361 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5362 | pSMB->DataOffset = cpu_to_le16(offset); | |
5363 | pSMB->Fid = fid; | |
5364 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5365 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5366 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5367 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5368 | *data_offset = delete_file ? 1 : 0; | |
5369 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5370 | if (rc) | |
b6b38f70 | 5371 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5372 | |
5373 | return rc; | |
5374 | } | |
1da177e4 LT |
5375 | |
5376 | int | |
96daf2b0 | 5377 | CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5378 | const char *fileName, const FILE_BASIC_INFO *data, |
5379 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5380 | { |
5381 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5382 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5383 | int name_len; | |
5384 | int rc = 0; | |
5385 | int bytes_returned = 0; | |
5386 | char *data_offset; | |
5387 | __u16 params, param_offset, offset, byte_count, count; | |
5388 | ||
b6b38f70 | 5389 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5390 | |
5391 | SetTimesRetry: | |
5392 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5393 | (void **) &pSMBr); | |
5394 | if (rc) | |
5395 | return rc; | |
5396 | ||
5397 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5398 | name_len = | |
b1a45695 | 5399 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5400 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5401 | name_len++; /* trailing null */ |
5402 | name_len *= 2; | |
50c2f753 | 5403 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5404 | name_len = strnlen(fileName, PATH_MAX); |
5405 | name_len++; /* trailing null */ | |
5406 | strncpy(pSMB->FileName, fileName, name_len); | |
5407 | } | |
5408 | ||
5409 | params = 6 + name_len; | |
26f57364 | 5410 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5411 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5412 | /* BB find max SMB PDU from sess structure BB */ |
5413 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5414 | pSMB->MaxSetupCount = 0; |
5415 | pSMB->Reserved = 0; | |
5416 | pSMB->Flags = 0; | |
5417 | pSMB->Timeout = 0; | |
5418 | pSMB->Reserved2 = 0; | |
5419 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5420 | InformationLevel) - 4; |
1da177e4 LT |
5421 | offset = param_offset + params; |
5422 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5423 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5424 | pSMB->DataOffset = cpu_to_le16(offset); | |
5425 | pSMB->SetupCount = 1; | |
5426 | pSMB->Reserved3 = 0; | |
5427 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5428 | byte_count = 3 /* pad */ + params + count; | |
5429 | ||
5430 | pSMB->DataCount = cpu_to_le16(count); | |
5431 | pSMB->ParameterCount = cpu_to_le16(params); | |
5432 | pSMB->TotalDataCount = pSMB->DataCount; | |
5433 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5434 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5435 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5436 | else | |
5437 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5438 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5439 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5440 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5441 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5442 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5443 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5444 | if (rc) |
b6b38f70 | 5445 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5446 | |
5447 | cifs_buf_release(pSMB); | |
5448 | ||
5449 | if (rc == -EAGAIN) | |
5450 | goto SetTimesRetry; | |
5451 | ||
5452 | return rc; | |
5453 | } | |
5454 | ||
5455 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5456 | /* Can be used to set attributes */ | |
5457 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5458 | handling it anyway and NT4 was what we thought it would be needed for | |
5459 | Do not delete it until we prove whether needed for Win9x though */ | |
5460 | int | |
96daf2b0 | 5461 | CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5462 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5463 | { | |
5464 | SETATTR_REQ *pSMB = NULL; | |
5465 | SETATTR_RSP *pSMBr = NULL; | |
5466 | int rc = 0; | |
5467 | int bytes_returned; | |
5468 | int name_len; | |
5469 | ||
b6b38f70 | 5470 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5471 | |
5472 | SetAttrLgcyRetry: | |
5473 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5474 | (void **) &pSMBr); | |
5475 | if (rc) | |
5476 | return rc; | |
5477 | ||
5478 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5479 | name_len = | |
50c2f753 | 5480 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5481 | PATH_MAX, nls_codepage); |
5482 | name_len++; /* trailing null */ | |
5483 | name_len *= 2; | |
50c2f753 | 5484 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5485 | name_len = strnlen(fileName, PATH_MAX); |
5486 | name_len++; /* trailing null */ | |
5487 | strncpy(pSMB->fileName, fileName, name_len); | |
5488 | } | |
5489 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5490 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5491 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5492 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5493 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5494 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5495 | if (rc) |
b6b38f70 | 5496 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5497 | |
5498 | cifs_buf_release(pSMB); | |
5499 | ||
5500 | if (rc == -EAGAIN) | |
5501 | goto SetAttrLgcyRetry; | |
5502 | ||
5503 | return rc; | |
5504 | } | |
5505 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5506 | ||
654cf14a JL |
5507 | static void |
5508 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5509 | const struct cifs_unix_set_info_args *args) | |
5510 | { | |
5511 | u64 mode = args->mode; | |
5512 | ||
5513 | /* | |
5514 | * Samba server ignores set of file size to zero due to bugs in some | |
5515 | * older clients, but we should be precise - we use SetFileSize to | |
5516 | * set file size and do not want to truncate file size to zero | |
25985edc | 5517 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5518 | * zero instead of -1 here |
5519 | */ | |
5520 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5521 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5522 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5523 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5524 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5525 | data_offset->Uid = cpu_to_le64(args->uid); | |
5526 | data_offset->Gid = cpu_to_le64(args->gid); | |
5527 | /* better to leave device as zero when it is */ | |
5528 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5529 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5530 | data_offset->Permissions = cpu_to_le64(mode); | |
5531 | ||
5532 | if (S_ISREG(mode)) | |
5533 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5534 | else if (S_ISDIR(mode)) | |
5535 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5536 | else if (S_ISLNK(mode)) | |
5537 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5538 | else if (S_ISCHR(mode)) | |
5539 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5540 | else if (S_ISBLK(mode)) | |
5541 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5542 | else if (S_ISFIFO(mode)) | |
5543 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5544 | else if (S_ISSOCK(mode)) | |
5545 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5546 | } | |
5547 | ||
3bbeeb3c | 5548 | int |
96daf2b0 | 5549 | CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5550 | const struct cifs_unix_set_info_args *args, |
5551 | u16 fid, u32 pid_of_opener) | |
5552 | { | |
5553 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5554 | FILE_UNIX_BASIC_INFO *data_offset; | |
5555 | int rc = 0; | |
5556 | u16 params, param_offset, offset, byte_count, count; | |
5557 | ||
b6b38f70 | 5558 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5559 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5560 | ||
5561 | if (rc) | |
5562 | return rc; | |
5563 | ||
5564 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5565 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5566 | ||
5567 | params = 6; | |
5568 | pSMB->MaxSetupCount = 0; | |
5569 | pSMB->Reserved = 0; | |
5570 | pSMB->Flags = 0; | |
5571 | pSMB->Timeout = 0; | |
5572 | pSMB->Reserved2 = 0; | |
5573 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5574 | offset = param_offset + params; | |
5575 | ||
5576 | data_offset = (FILE_UNIX_BASIC_INFO *) | |
5577 | ((char *)(&pSMB->hdr.Protocol) + offset); | |
5578 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
5579 | ||
5580 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5581 | /* BB find max SMB PDU from sess */ | |
5582 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5583 | pSMB->SetupCount = 1; | |
5584 | pSMB->Reserved3 = 0; | |
5585 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5586 | byte_count = 3 /* pad */ + params + count; | |
5587 | pSMB->DataCount = cpu_to_le16(count); | |
5588 | pSMB->ParameterCount = cpu_to_le16(params); | |
5589 | pSMB->TotalDataCount = pSMB->DataCount; | |
5590 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5591 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5592 | pSMB->DataOffset = cpu_to_le16(offset); | |
5593 | pSMB->Fid = fid; | |
5594 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5595 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5596 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5597 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5598 | ||
5599 | cifs_fill_unix_set_info(data_offset, args); | |
5600 | ||
5601 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
5602 | if (rc) | |
b6b38f70 | 5603 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5604 | |
5605 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5606 | since file handle passed in no longer valid */ | |
5607 | ||
5608 | return rc; | |
5609 | } | |
5610 | ||
1da177e4 | 5611 | int |
96daf2b0 | 5612 | CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName, |
01ea95e3 JL |
5613 | const struct cifs_unix_set_info_args *args, |
5614 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5615 | { |
5616 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5617 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5618 | int name_len; | |
5619 | int rc = 0; | |
5620 | int bytes_returned = 0; | |
5621 | FILE_UNIX_BASIC_INFO *data_offset; | |
5622 | __u16 params, param_offset, offset, count, byte_count; | |
5623 | ||
b6b38f70 | 5624 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5625 | setPermsRetry: |
5626 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5627 | (void **) &pSMBr); | |
5628 | if (rc) | |
5629 | return rc; | |
5630 | ||
5631 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5632 | name_len = | |
50c2f753 | 5633 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5634 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5635 | name_len++; /* trailing null */ |
5636 | name_len *= 2; | |
3e87d803 | 5637 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5638 | name_len = strnlen(fileName, PATH_MAX); |
5639 | name_len++; /* trailing null */ | |
5640 | strncpy(pSMB->FileName, fileName, name_len); | |
5641 | } | |
5642 | ||
5643 | params = 6 + name_len; | |
26f57364 | 5644 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5645 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5646 | /* BB find max SMB PDU from sess structure BB */ |
5647 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5648 | pSMB->MaxSetupCount = 0; |
5649 | pSMB->Reserved = 0; | |
5650 | pSMB->Flags = 0; | |
5651 | pSMB->Timeout = 0; | |
5652 | pSMB->Reserved2 = 0; | |
5653 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5654 | InformationLevel) - 4; |
1da177e4 LT |
5655 | offset = param_offset + params; |
5656 | data_offset = | |
5657 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5658 | offset); | |
5659 | memset(data_offset, 0, count); | |
5660 | pSMB->DataOffset = cpu_to_le16(offset); | |
5661 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5662 | pSMB->SetupCount = 1; | |
5663 | pSMB->Reserved3 = 0; | |
5664 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5665 | byte_count = 3 /* pad */ + params + count; | |
5666 | pSMB->ParameterCount = cpu_to_le16(params); | |
5667 | pSMB->DataCount = cpu_to_le16(count); | |
5668 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5669 | pSMB->TotalDataCount = pSMB->DataCount; | |
5670 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5671 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5672 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5673 | |
654cf14a | 5674 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5675 | |
5676 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5677 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5678 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5679 | if (rc) |
b6b38f70 | 5680 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5681 | |
0d817bc0 | 5682 | cifs_buf_release(pSMB); |
1da177e4 LT |
5683 | if (rc == -EAGAIN) |
5684 | goto setPermsRetry; | |
5685 | return rc; | |
5686 | } | |
5687 | ||
1da177e4 | 5688 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5689 | /* |
5690 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5691 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5692 | * it looks for that attribute name and stuffs that value into the EAData | |
5693 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5694 | * buffer. In both cases, the return value is either the length of the | |
5695 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5696 | * the data isn't copied to it, but the length is returned. | |
5697 | */ | |
1da177e4 | 5698 | ssize_t |
96daf2b0 | 5699 | CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon, |
31c0519f JL |
5700 | const unsigned char *searchName, const unsigned char *ea_name, |
5701 | char *EAData, size_t buf_size, | |
5702 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5703 | { |
5704 | /* BB assumes one setup word */ | |
5705 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5706 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5707 | int rc = 0; | |
5708 | int bytes_returned; | |
6e462b9f | 5709 | int list_len; |
f0d3868b | 5710 | struct fealist *ea_response_data; |
50c2f753 SF |
5711 | struct fea *temp_fea; |
5712 | char *temp_ptr; | |
0cd126b5 | 5713 | char *end_of_smb; |
f0d3868b | 5714 | __u16 params, byte_count, data_offset; |
5980fc96 | 5715 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 5716 | |
b6b38f70 | 5717 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
5718 | QAllEAsRetry: |
5719 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5720 | (void **) &pSMBr); | |
5721 | if (rc) | |
5722 | return rc; | |
5723 | ||
5724 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5725 | list_len = |
50c2f753 | 5726 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5727 | PATH_MAX, nls_codepage, remap); |
6e462b9f JL |
5728 | list_len++; /* trailing null */ |
5729 | list_len *= 2; | |
1da177e4 | 5730 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
5731 | list_len = strnlen(searchName, PATH_MAX); |
5732 | list_len++; /* trailing null */ | |
5733 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
5734 | } |
5735 | ||
6e462b9f | 5736 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5737 | pSMB->TotalDataCount = 0; |
5738 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5739 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5740 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5741 | pSMB->MaxSetupCount = 0; |
5742 | pSMB->Reserved = 0; | |
5743 | pSMB->Flags = 0; | |
5744 | pSMB->Timeout = 0; | |
5745 | pSMB->Reserved2 = 0; | |
5746 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5747 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5748 | pSMB->DataCount = 0; |
5749 | pSMB->DataOffset = 0; | |
5750 | pSMB->SetupCount = 1; | |
5751 | pSMB->Reserved3 = 0; | |
5752 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5753 | byte_count = params + 1 /* pad */ ; | |
5754 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5755 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5756 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5757 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5758 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5759 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5760 | ||
5761 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5762 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5763 | if (rc) { | |
b6b38f70 | 5764 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
5765 | goto QAllEAsOut; |
5766 | } | |
1da177e4 | 5767 | |
f0d3868b JL |
5768 | |
5769 | /* BB also check enough total bytes returned */ | |
5770 | /* BB we need to improve the validity checking | |
5771 | of these trans2 responses */ | |
5772 | ||
5773 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5774 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5775 | rc = -EIO; /* bad smb */ |
5776 | goto QAllEAsOut; | |
5777 | } | |
5778 | ||
5779 | /* check that length of list is not more than bcc */ | |
5780 | /* check that each entry does not go beyond length | |
5781 | of list */ | |
5782 | /* check that each element of each entry does not | |
5783 | go beyond end of list */ | |
5784 | /* validate_trans2_offsets() */ | |
5785 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5786 | ||
5787 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5788 | ea_response_data = (struct fealist *) | |
5789 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5790 | ||
6e462b9f | 5791 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 5792 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 5793 | if (list_len <= 8) { |
b6b38f70 | 5794 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
5795 | goto QAllEAsOut; |
5796 | } | |
5797 | ||
0cd126b5 | 5798 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5799 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5800 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 5801 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
5802 | rc = -EIO; |
5803 | goto QAllEAsOut; | |
5804 | } | |
5805 | ||
f0d3868b | 5806 | /* account for ea list len */ |
6e462b9f | 5807 | list_len -= 4; |
f0d3868b JL |
5808 | temp_fea = ea_response_data->list; |
5809 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 5810 | while (list_len > 0) { |
122ca007 | 5811 | unsigned int name_len; |
f0d3868b | 5812 | __u16 value_len; |
0cd126b5 | 5813 | |
6e462b9f | 5814 | list_len -= 4; |
f0d3868b | 5815 | temp_ptr += 4; |
0cd126b5 JL |
5816 | /* make sure we can read name_len and value_len */ |
5817 | if (list_len < 0) { | |
b6b38f70 | 5818 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5819 | rc = -EIO; |
5820 | goto QAllEAsOut; | |
5821 | } | |
5822 | ||
5823 | name_len = temp_fea->name_len; | |
5824 | value_len = le16_to_cpu(temp_fea->value_len); | |
5825 | list_len -= name_len + 1 + value_len; | |
5826 | if (list_len < 0) { | |
b6b38f70 | 5827 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
5828 | rc = -EIO; |
5829 | goto QAllEAsOut; | |
5830 | } | |
5831 | ||
31c0519f | 5832 | if (ea_name) { |
91d065c4 | 5833 | if (ea_name_len == name_len && |
ac423446 | 5834 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
5835 | temp_ptr += name_len + 1; |
5836 | rc = value_len; | |
5837 | if (buf_size == 0) | |
5838 | goto QAllEAsOut; | |
5839 | if ((size_t)value_len > buf_size) { | |
5840 | rc = -ERANGE; | |
5841 | goto QAllEAsOut; | |
5842 | } | |
5843 | memcpy(EAData, temp_ptr, value_len); | |
5844 | goto QAllEAsOut; | |
5845 | } | |
f0d3868b | 5846 | } else { |
31c0519f JL |
5847 | /* account for prefix user. and trailing null */ |
5848 | rc += (5 + 1 + name_len); | |
5849 | if (rc < (int) buf_size) { | |
5850 | memcpy(EAData, "user.", 5); | |
5851 | EAData += 5; | |
5852 | memcpy(EAData, temp_ptr, name_len); | |
5853 | EAData += name_len; | |
5854 | /* null terminate name */ | |
5855 | *EAData = 0; | |
5856 | ++EAData; | |
5857 | } else if (buf_size == 0) { | |
5858 | /* skip copy - calc size only */ | |
5859 | } else { | |
5860 | /* stop before overrun buffer */ | |
5861 | rc = -ERANGE; | |
5862 | break; | |
5863 | } | |
1da177e4 | 5864 | } |
0cd126b5 | 5865 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5866 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5867 | } |
f0d3868b | 5868 | |
31c0519f JL |
5869 | /* didn't find the named attribute */ |
5870 | if (ea_name) | |
5871 | rc = -ENODATA; | |
5872 | ||
f0d3868b | 5873 | QAllEAsOut: |
0d817bc0 | 5874 | cifs_buf_release(pSMB); |
1da177e4 LT |
5875 | if (rc == -EAGAIN) |
5876 | goto QAllEAsRetry; | |
5877 | ||
5878 | return (ssize_t)rc; | |
5879 | } | |
5880 | ||
1da177e4 | 5881 | int |
96daf2b0 | 5882 | CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName, |
50c2f753 SF |
5883 | const char *ea_name, const void *ea_value, |
5884 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5885 | int remap) | |
1da177e4 LT |
5886 | { |
5887 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5888 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5889 | struct fealist *parm_data; | |
5890 | int name_len; | |
5891 | int rc = 0; | |
5892 | int bytes_returned = 0; | |
5893 | __u16 params, param_offset, byte_count, offset, count; | |
5894 | ||
b6b38f70 | 5895 | cFYI(1, "In SetEA"); |
1da177e4 LT |
5896 | SetEARetry: |
5897 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5898 | (void **) &pSMBr); | |
5899 | if (rc) | |
5900 | return rc; | |
5901 | ||
5902 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5903 | name_len = | |
50c2f753 | 5904 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5905 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5906 | name_len++; /* trailing null */ |
5907 | name_len *= 2; | |
50c2f753 | 5908 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5909 | name_len = strnlen(fileName, PATH_MAX); |
5910 | name_len++; /* trailing null */ | |
5911 | strncpy(pSMB->FileName, fileName, name_len); | |
5912 | } | |
5913 | ||
5914 | params = 6 + name_len; | |
5915 | ||
5916 | /* done calculating parms using name_len of file name, | |
5917 | now use name_len to calculate length of ea name | |
5918 | we are going to create in the inode xattrs */ | |
790fe579 | 5919 | if (ea_name == NULL) |
1da177e4 LT |
5920 | name_len = 0; |
5921 | else | |
50c2f753 | 5922 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5923 | |
dae5dbdb | 5924 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5925 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5926 | /* BB find max SMB PDU from sess */ |
5927 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5928 | pSMB->MaxSetupCount = 0; |
5929 | pSMB->Reserved = 0; | |
5930 | pSMB->Flags = 0; | |
5931 | pSMB->Timeout = 0; | |
5932 | pSMB->Reserved2 = 0; | |
5933 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5934 | InformationLevel) - 4; |
1da177e4 LT |
5935 | offset = param_offset + params; |
5936 | pSMB->InformationLevel = | |
5937 | cpu_to_le16(SMB_SET_FILE_EA); | |
5938 | ||
5939 | parm_data = | |
5940 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5941 | offset); | |
5942 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5943 | pSMB->DataOffset = cpu_to_le16(offset); | |
5944 | pSMB->SetupCount = 1; | |
5945 | pSMB->Reserved3 = 0; | |
5946 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5947 | byte_count = 3 /* pad */ + params + count; | |
5948 | pSMB->DataCount = cpu_to_le16(count); | |
5949 | parm_data->list_len = cpu_to_le32(count); | |
5950 | parm_data->list[0].EA_flags = 0; | |
5951 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5952 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5953 | /* EA names are always ASCII */ |
790fe579 | 5954 | if (ea_name) |
50c2f753 | 5955 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5956 | parm_data->list[0].name[name_len] = 0; |
5957 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5958 | /* caller ensures that ea_value_len is less than 64K but | |
5959 | we need to ensure that it fits within the smb */ | |
5960 | ||
50c2f753 SF |
5961 | /*BB add length check to see if it would fit in |
5962 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5963 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5964 | if (ea_value_len) | |
50c2f753 SF |
5965 | memcpy(parm_data->list[0].name+name_len+1, |
5966 | ea_value, ea_value_len); | |
1da177e4 LT |
5967 | |
5968 | pSMB->TotalDataCount = pSMB->DataCount; | |
5969 | pSMB->ParameterCount = cpu_to_le16(params); | |
5970 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5971 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5972 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5973 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5974 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5975 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5976 | if (rc) |
b6b38f70 | 5977 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
5978 | |
5979 | cifs_buf_release(pSMB); | |
5980 | ||
5981 | if (rc == -EAGAIN) | |
5982 | goto SetEARetry; | |
5983 | ||
5984 | return rc; | |
5985 | } | |
1da177e4 | 5986 | #endif |
0eff0e26 SF |
5987 | |
5988 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
5989 | /* | |
5990 | * Years ago the kernel added a "dnotify" function for Samba server, | |
5991 | * to allow network clients (such as Windows) to display updated | |
5992 | * lists of files in directory listings automatically when | |
5993 | * files are added by one user when another user has the | |
5994 | * same directory open on their desktop. The Linux cifs kernel | |
5995 | * client hooked into the kernel side of this interface for | |
5996 | * the same reason, but ironically when the VFS moved from | |
5997 | * "dnotify" to "inotify" it became harder to plug in Linux | |
5998 | * network file system clients (the most obvious use case | |
5999 | * for notify interfaces is when multiple users can update | |
6000 | * the contents of the same directory - exactly what network | |
6001 | * file systems can do) although the server (Samba) could | |
6002 | * still use it. For the short term we leave the worker | |
6003 | * function ifdeffed out (below) until inotify is fixed | |
6004 | * in the VFS to make it easier to plug in network file | |
6005 | * system clients. If inotify turns out to be permanently | |
6006 | * incompatible for network fs clients, we could instead simply | |
6007 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6008 | */ | |
96daf2b0 | 6009 | int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6010 | const int notify_subdirs, const __u16 netfid, |
6011 | __u32 filter, struct file *pfile, int multishot, | |
6012 | const struct nls_table *nls_codepage) | |
6013 | { | |
6014 | int rc = 0; | |
6015 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6016 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6017 | struct dir_notify_req *dnotify_req; | |
6018 | int bytes_returned; | |
6019 | ||
6020 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6021 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6022 | (void **) &pSMBr); | |
6023 | if (rc) | |
6024 | return rc; | |
6025 | ||
6026 | pSMB->TotalParameterCount = 0 ; | |
6027 | pSMB->TotalDataCount = 0; | |
6028 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6029 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6030 | pSMB->MaxSetupCount = 4; |
6031 | pSMB->Reserved = 0; | |
6032 | pSMB->ParameterOffset = 0; | |
6033 | pSMB->DataCount = 0; | |
6034 | pSMB->DataOffset = 0; | |
6035 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6036 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6037 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6038 | if (notify_subdirs) | |
6039 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6040 | pSMB->Reserved2 = 0; | |
6041 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6042 | pSMB->Fid = netfid; /* file handle always le */ | |
6043 | pSMB->ByteCount = 0; | |
6044 | ||
6045 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6046 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6047 | CIFS_ASYNC_OP); | |
6048 | if (rc) { | |
6049 | cFYI(1, "Error in Notify = %d", rc); | |
6050 | } else { | |
6051 | /* Add file to outstanding requests */ | |
6052 | /* BB change to kmem cache alloc */ | |
6053 | dnotify_req = kmalloc( | |
6054 | sizeof(struct dir_notify_req), | |
6055 | GFP_KERNEL); | |
6056 | if (dnotify_req) { | |
6057 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6058 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6059 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6060 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6061 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6062 | dnotify_req->netfid = netfid; | |
6063 | dnotify_req->pfile = pfile; | |
6064 | dnotify_req->filter = filter; | |
6065 | dnotify_req->multishot = multishot; | |
6066 | spin_lock(&GlobalMid_Lock); | |
6067 | list_add_tail(&dnotify_req->lhead, | |
6068 | &GlobalDnotifyReqList); | |
6069 | spin_unlock(&GlobalMid_Lock); | |
6070 | } else | |
6071 | rc = -ENOMEM; | |
6072 | } | |
6073 | cifs_buf_release(pSMB); | |
6074 | return rc; | |
6075 | } | |
6076 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |