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> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
3cf003c0 JL |
89 | #ifdef CONFIG_HIGHMEM |
90 | /* | |
91 | * On arches that have high memory, kmap address space is limited. By | |
92 | * serializing the kmap operations on those arches, we ensure that we don't | |
93 | * end up with a bunch of threads in writeback with partially mapped page | |
94 | * arrays, stuck waiting for kmap to come back. That situation prevents | |
95 | * progress and can deadlock. | |
96 | */ | |
97 | static DEFINE_MUTEX(cifs_kmap_mutex); | |
98 | ||
99 | static inline void | |
100 | cifs_kmap_lock(void) | |
101 | { | |
102 | mutex_lock(&cifs_kmap_mutex); | |
103 | } | |
104 | ||
105 | static inline void | |
106 | cifs_kmap_unlock(void) | |
107 | { | |
108 | mutex_unlock(&cifs_kmap_mutex); | |
109 | } | |
110 | #else /* !CONFIG_HIGHMEM */ | |
111 | #define cifs_kmap_lock() do { ; } while(0) | |
112 | #define cifs_kmap_unlock() do { ; } while(0) | |
113 | #endif /* CONFIG_HIGHMEM */ | |
e28bc5b1 | 114 | |
aa24d1e9 PS |
115 | /* |
116 | * Mark as invalid, all open files on tree connections since they | |
117 | * were closed when session to server was lost. | |
118 | */ | |
119 | void | |
120 | cifs_mark_open_files_invalid(struct cifs_tcon *tcon) | |
1da177e4 LT |
121 | { |
122 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
123 | struct list_head *tmp; |
124 | struct list_head *tmp1; | |
1da177e4 | 125 | |
aa24d1e9 | 126 | /* list all files open on tree connection and mark them invalid */ |
4477288a | 127 | spin_lock(&cifs_file_list_lock); |
aa24d1e9 | 128 | list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
790fe579 | 129 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 130 | open_file->invalidHandle = true; |
3bc303c2 | 131 | open_file->oplock_break_cancelled = true; |
1da177e4 | 132 | } |
4477288a | 133 | spin_unlock(&cifs_file_list_lock); |
aa24d1e9 PS |
134 | /* |
135 | * BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
136 | * to this tcon. | |
137 | */ | |
1da177e4 LT |
138 | } |
139 | ||
9162ab20 JL |
140 | /* reconnect the socket, tcon, and smb session if needed */ |
141 | static int | |
96daf2b0 | 142 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 143 | { |
c4a5534a | 144 | int rc; |
96daf2b0 | 145 | struct cifs_ses *ses; |
9162ab20 JL |
146 | struct TCP_Server_Info *server; |
147 | struct nls_table *nls_codepage; | |
148 | ||
149 | /* | |
150 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
151 | * tcp and smb session status done differently for those three - in the | |
152 | * calling routine | |
153 | */ | |
154 | if (!tcon) | |
155 | return 0; | |
156 | ||
157 | ses = tcon->ses; | |
158 | server = ses->server; | |
159 | ||
160 | /* | |
161 | * only tree disconnect, open, and write, (and ulogoff which does not | |
162 | * have tcon) are allowed as we start force umount | |
163 | */ | |
164 | if (tcon->tidStatus == CifsExiting) { | |
165 | if (smb_command != SMB_COM_WRITE_ANDX && | |
166 | smb_command != SMB_COM_OPEN_ANDX && | |
167 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
168 | cFYI(1, "can not send cmd %d while umounting", |
169 | smb_command); | |
9162ab20 JL |
170 | return -ENODEV; |
171 | } | |
172 | } | |
173 | ||
9162ab20 JL |
174 | /* |
175 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
176 | * greater than cifs socket timeout which is 7 seconds | |
177 | */ | |
178 | while (server->tcpStatus == CifsNeedReconnect) { | |
179 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 180 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 181 | |
fd88ce93 | 182 | /* are we still trying to reconnect? */ |
9162ab20 JL |
183 | if (server->tcpStatus != CifsNeedReconnect) |
184 | break; | |
185 | ||
186 | /* | |
187 | * on "soft" mounts we wait once. Hard mounts keep | |
188 | * retrying until process is killed or server comes | |
189 | * back on-line | |
190 | */ | |
d402539b | 191 | if (!tcon->retry) { |
b6b38f70 | 192 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
193 | return -EHOSTDOWN; |
194 | } | |
195 | } | |
196 | ||
197 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
198 | return 0; | |
199 | ||
200 | nls_codepage = load_nls_default(); | |
201 | ||
202 | /* | |
203 | * need to prevent multiple threads trying to simultaneously | |
204 | * reconnect the same SMB session | |
205 | */ | |
d7b619cf | 206 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
207 | rc = cifs_negotiate_protocol(0, ses); |
208 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
209 | rc = cifs_setup_session(0, ses, nls_codepage); |
210 | ||
211 | /* do we need to reconnect tcon? */ | |
212 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 213 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
214 | goto out; |
215 | } | |
216 | ||
aa24d1e9 | 217 | cifs_mark_open_files_invalid(tcon); |
9162ab20 | 218 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
d7b619cf | 219 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 220 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
221 | |
222 | if (rc) | |
223 | goto out; | |
224 | ||
225 | /* | |
226 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
227 | * size shrinking | |
228 | */ | |
229 | atomic_inc(&tconInfoReconnectCount); | |
230 | ||
231 | /* tell server Unix caps we support */ | |
232 | if (ses->capabilities & CAP_UNIX) | |
233 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
234 | ||
235 | /* | |
236 | * Removed call to reopen open files here. It is safer (and faster) to | |
237 | * reopen files one at a time as needed in read and write. | |
238 | * | |
239 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
240 | */ | |
241 | ||
242 | out: | |
243 | /* | |
244 | * Check if handle based operation so we know whether we can continue | |
245 | * or not without returning to caller to reset file handle | |
246 | */ | |
247 | switch (smb_command) { | |
248 | case SMB_COM_READ_ANDX: | |
249 | case SMB_COM_WRITE_ANDX: | |
250 | case SMB_COM_CLOSE: | |
251 | case SMB_COM_FIND_CLOSE2: | |
252 | case SMB_COM_LOCKING_ANDX: | |
253 | rc = -EAGAIN; | |
254 | } | |
255 | ||
256 | unload_nls(nls_codepage); | |
257 | return rc; | |
258 | } | |
259 | ||
ad7a2926 SF |
260 | /* Allocate and return pointer to an SMB request buffer, and set basic |
261 | SMB information in the SMB header. If the return code is zero, this | |
262 | function must have filled in request_buf pointer */ | |
1da177e4 | 263 | static int |
96daf2b0 | 264 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 265 | void **request_buf) |
1da177e4 | 266 | { |
f569599a | 267 | int rc; |
1da177e4 | 268 | |
9162ab20 | 269 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 270 | if (rc) |
1da177e4 LT |
271 | return rc; |
272 | ||
273 | *request_buf = cifs_small_buf_get(); | |
274 | if (*request_buf == NULL) { | |
275 | /* BB should we add a retry in here if not a writepage? */ | |
276 | return -ENOMEM; | |
277 | } | |
278 | ||
63135e08 | 279 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 280 | tcon, wct); |
1da177e4 | 281 | |
790fe579 SF |
282 | if (tcon != NULL) |
283 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 284 | |
f569599a | 285 | return 0; |
5815449d SF |
286 | } |
287 | ||
12b3b8ff | 288 | int |
50c2f753 | 289 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 290 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
291 | { |
292 | int rc; | |
50c2f753 | 293 | struct smb_hdr *buffer; |
12b3b8ff | 294 | |
5815449d | 295 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 296 | if (rc) |
12b3b8ff SF |
297 | return rc; |
298 | ||
04fdabe1 | 299 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 300 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
301 | if (ses->capabilities & CAP_UNICODE) |
302 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 303 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
304 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
305 | ||
306 | /* uid, tid can stay at zero as set in header assemble */ | |
307 | ||
50c2f753 | 308 | /* BB add support for turning on the signing when |
12b3b8ff SF |
309 | this function is used after 1st of session setup requests */ |
310 | ||
311 | return rc; | |
312 | } | |
1da177e4 LT |
313 | |
314 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
315 | static int | |
96daf2b0 | 316 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 317 | void **request_buf, void **response_buf) |
1da177e4 | 318 | { |
1da177e4 LT |
319 | *request_buf = cifs_buf_get(); |
320 | if (*request_buf == NULL) { | |
321 | /* BB should we add a retry in here if not a writepage? */ | |
322 | return -ENOMEM; | |
323 | } | |
324 | /* Although the original thought was we needed the response buf for */ | |
325 | /* potential retries of smb operations it turns out we can determine */ | |
326 | /* from the mid flags when the request buffer can be resent without */ | |
327 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 328 | if (response_buf) |
50c2f753 | 329 | *response_buf = *request_buf; |
1da177e4 LT |
330 | |
331 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 332 | wct); |
1da177e4 | 333 | |
790fe579 SF |
334 | if (tcon != NULL) |
335 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 336 | |
f569599a JL |
337 | return 0; |
338 | } | |
339 | ||
340 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
341 | static int | |
96daf2b0 | 342 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
343 | void **request_buf, void **response_buf) |
344 | { | |
345 | int rc; | |
346 | ||
347 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
348 | if (rc) | |
349 | return rc; | |
350 | ||
351 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
352 | } | |
353 | ||
354 | static int | |
96daf2b0 | 355 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
356 | void **request_buf, void **response_buf) |
357 | { | |
358 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
359 | return -EHOSTDOWN; | |
360 | ||
361 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
362 | } |
363 | ||
50c2f753 | 364 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 365 | { |
12df83c9 JL |
366 | unsigned int total_size; |
367 | ||
368 | /* check for plausible wct */ | |
369 | if (pSMB->hdr.WordCount < 10) | |
370 | goto vt2_err; | |
1da177e4 | 371 | |
1da177e4 | 372 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
373 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
374 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
375 | goto vt2_err; | |
376 | ||
12df83c9 JL |
377 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
378 | if (total_size >= 512) | |
379 | goto vt2_err; | |
380 | ||
fd5707e1 JL |
381 | /* check that bcc is at least as big as parms + data, and that it is |
382 | * less than negotiated smb buffer | |
383 | */ | |
12df83c9 JL |
384 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
385 | if (total_size > get_bcc(&pSMB->hdr) || | |
386 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
387 | goto vt2_err; | |
388 | ||
389 | return 0; | |
390 | vt2_err: | |
50c2f753 | 391 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 392 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 393 | return -EINVAL; |
1da177e4 | 394 | } |
690c522f | 395 | |
1da177e4 | 396 | int |
286170aa | 397 | CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
398 | { |
399 | NEGOTIATE_REQ *pSMB; | |
400 | NEGOTIATE_RSP *pSMBr; | |
401 | int rc = 0; | |
402 | int bytes_returned; | |
3979877e | 403 | int i; |
50c2f753 | 404 | struct TCP_Server_Info *server; |
1da177e4 | 405 | u16 count; |
750d1151 | 406 | unsigned int secFlags; |
1da177e4 | 407 | |
790fe579 | 408 | if (ses->server) |
1da177e4 LT |
409 | server = ses->server; |
410 | else { | |
411 | rc = -EIO; | |
412 | return rc; | |
413 | } | |
414 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
415 | (void **) &pSMB, (void **) &pSMBr); | |
416 | if (rc) | |
417 | return rc; | |
750d1151 SF |
418 | |
419 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 420 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 421 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 422 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 423 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 424 | |
b6b38f70 | 425 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 426 | |
88257360 | 427 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 428 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 429 | |
100c1ddc | 430 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 431 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 432 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 433 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 434 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 435 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
436 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
437 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 438 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
439 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
440 | } | |
50c2f753 | 441 | |
3979877e | 442 | count = 0; |
50c2f753 | 443 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
444 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
445 | count += strlen(protocols[i].name) + 1; | |
446 | /* null at end of source and target buffers anyway */ | |
447 | } | |
be8e3b00 | 448 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
449 | pSMB->ByteCount = cpu_to_le16(count); |
450 | ||
451 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
452 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 453 | if (rc != 0) |
254e55ed SF |
454 | goto neg_err_exit; |
455 | ||
9bf67e51 JL |
456 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
457 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 458 | /* Check wct = 1 error case */ |
9bf67e51 | 459 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 460 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 461 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
462 | could not negotiate a common dialect */ |
463 | rc = -EOPNOTSUPP; | |
464 | goto neg_err_exit; | |
50c2f753 | 465 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 466 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
467 | && ((server->dialect == LANMAN_PROT) |
468 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 469 | __s16 tmp; |
50c2f753 | 470 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 471 | |
790fe579 | 472 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 473 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
474 | server->secType = LANMAN; |
475 | else { | |
b6b38f70 JP |
476 | cERROR(1, "mount failed weak security disabled" |
477 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
478 | rc = -EOPNOTSUPP; |
479 | goto neg_err_exit; | |
50c2f753 | 480 | } |
286170aa | 481 | server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
10b9b98e PS |
482 | server->maxReq = min_t(unsigned int, |
483 | le16_to_cpu(rsp->MaxMpxCount), | |
484 | cifs_max_pending); | |
45275789 | 485 | set_credits(server, server->maxReq); |
c974befa | 486 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
eca6acf9 | 487 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
488 | /* even though we do not use raw we might as well set this |
489 | accurately, in case we ever find a need for it */ | |
790fe579 | 490 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 491 | server->max_rw = 0xFF00; |
254e55ed SF |
492 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
493 | } else { | |
eca6acf9 | 494 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
495 | server->capabilities = CAP_MPX_MODE; |
496 | } | |
b815f1e5 | 497 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 498 | if (tmp == -1) { |
25ee4a98 SF |
499 | /* OS/2 often does not set timezone therefore |
500 | * we must use server time to calc time zone. | |
b815f1e5 SF |
501 | * Could deviate slightly from the right zone. |
502 | * Smallest defined timezone difference is 15 minutes | |
503 | * (i.e. Nepal). Rounding up/down is done to match | |
504 | * this requirement. | |
25ee4a98 | 505 | */ |
b815f1e5 | 506 | int val, seconds, remain, result; |
25ee4a98 SF |
507 | struct timespec ts, utc; |
508 | utc = CURRENT_TIME; | |
c4a2c08d JL |
509 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
510 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 511 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 512 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 513 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 514 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 515 | seconds = abs(val); |
947a5067 | 516 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 517 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 518 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 519 | result += MIN_TZ_ADJ; |
790fe579 | 520 | if (val < 0) |
ad7a2926 | 521 | result = -result; |
b815f1e5 | 522 | server->timeAdj = result; |
25ee4a98 | 523 | } else { |
b815f1e5 SF |
524 | server->timeAdj = (int)tmp; |
525 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 526 | } |
b6b38f70 | 527 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 528 | |
3979877e | 529 | |
254e55ed | 530 | /* BB get server time for time conversions and add |
50c2f753 | 531 | code to use it and timezone since this is not UTC */ |
3979877e | 532 | |
50c2f753 | 533 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 534 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 535 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 536 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 537 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
538 | rc = -EIO; /* need cryptkey unless plain text */ |
539 | goto neg_err_exit; | |
540 | } | |
3979877e | 541 | |
f19159dc | 542 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
543 | /* we will not end up setting signing flags - as no signing |
544 | was in LANMAN and server did not return the flags on */ | |
545 | goto signing_check; | |
7c7b25bc | 546 | #else /* weak security disabled */ |
790fe579 | 547 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
548 | cERROR(1, "mount failed, cifs module not built " |
549 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 550 | rc = -EOPNOTSUPP; |
7c7b25bc | 551 | #endif /* WEAK_PW_HASH */ |
254e55ed | 552 | goto neg_err_exit; |
790fe579 | 553 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
554 | /* unknown wct */ |
555 | rc = -EOPNOTSUPP; | |
556 | goto neg_err_exit; | |
557 | } | |
558 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
559 | server->sec_mode = pSMBr->SecurityMode; |
560 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 561 | cFYI(1, "share mode security"); |
bdc4bf6e | 562 | |
96daf2b0 | 563 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 564 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 565 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 566 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
567 | cERROR(1, "Server requests plain text password" |
568 | " but client support disabled"); | |
9312f675 | 569 | |
790fe579 | 570 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 571 | server->secType = NTLMv2; |
790fe579 | 572 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 573 | server->secType = NTLM; |
790fe579 | 574 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 575 | server->secType = NTLMv2; |
a013689d SF |
576 | else if (secFlags & CIFSSEC_MAY_KRB5) |
577 | server->secType = Kerberos; | |
ac683924 | 578 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 579 | server->secType = RawNTLMSSP; |
a013689d SF |
580 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
581 | server->secType = LANMAN; | |
a013689d SF |
582 | else { |
583 | rc = -EOPNOTSUPP; | |
b6b38f70 | 584 | cERROR(1, "Invalid security type"); |
a013689d SF |
585 | goto neg_err_exit; |
586 | } | |
587 | /* else ... any others ...? */ | |
254e55ed SF |
588 | |
589 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
590 | little endian */ | |
10b9b98e PS |
591 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
592 | cifs_max_pending); | |
45275789 | 593 | set_credits(server, server->maxReq); |
254e55ed | 594 | /* probably no need to store and check maxvcs */ |
c974befa | 595 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 596 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 597 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 598 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
599 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
600 | server->timeAdj *= 60; | |
254e55ed | 601 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 602 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 603 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
604 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
605 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
606 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 607 | /* decode security blob */ |
820a803f | 608 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 609 | if (count < 16) { |
254e55ed | 610 | rc = -EIO; |
e187e44e JL |
611 | goto neg_err_exit; |
612 | } | |
3f9bcca7 | 613 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 614 | if (server->srv_count > 1) { |
3f9bcca7 | 615 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
616 | if (memcmp(server->server_GUID, |
617 | pSMBr->u.extended_response. | |
618 | GUID, 16) != 0) { | |
b6b38f70 | 619 | cFYI(1, "server UID changed"); |
254e55ed | 620 | memcpy(server->server_GUID, |
e187e44e JL |
621 | pSMBr->u.extended_response.GUID, |
622 | 16); | |
623 | } | |
e7ddee90 | 624 | } else { |
3f9bcca7 | 625 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
626 | memcpy(server->server_GUID, |
627 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 628 | } |
e187e44e JL |
629 | |
630 | if (count == 16) { | |
631 | server->secType = RawNTLMSSP; | |
254e55ed SF |
632 | } else { |
633 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
634 | SecurityBlob, count - 16, |
635 | server); | |
ef571cad | 636 | if (rc == 1) |
e545937a | 637 | rc = 0; |
ef571cad | 638 | else |
254e55ed | 639 | rc = -EINVAL; |
2b149f11 SP |
640 | if (server->secType == Kerberos) { |
641 | if (!server->sec_kerberos && | |
642 | !server->sec_mskerberos) | |
643 | rc = -EOPNOTSUPP; | |
644 | } else if (server->secType == RawNTLMSSP) { | |
645 | if (!server->sec_ntlmssp) | |
646 | rc = -EOPNOTSUPP; | |
647 | } else | |
648 | rc = -EOPNOTSUPP; | |
1da177e4 | 649 | } |
96daf2b0 | 650 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
651 | rc = -EIO; /* no crypt key only if plain text pwd */ |
652 | goto neg_err_exit; | |
254e55ed SF |
653 | } else |
654 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
655 | ||
6344a423 | 656 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 657 | signing_check: |
6344a423 | 658 | #endif |
762e5ab7 SF |
659 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
660 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
661 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 662 | cFYI(1, "Signing disabled"); |
96daf2b0 | 663 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 664 | cERROR(1, "Server requires " |
7111d214 | 665 | "packet signing to be enabled in " |
b6b38f70 | 666 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
667 | rc = -EOPNOTSUPP; |
668 | } | |
96daf2b0 | 669 | server->sec_mode &= |
254e55ed | 670 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
671 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
672 | /* signing required */ | |
b6b38f70 | 673 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 674 | if ((server->sec_mode & |
762e5ab7 | 675 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 676 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 677 | rc = -EOPNOTSUPP; |
762e5ab7 | 678 | } else |
96daf2b0 | 679 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
680 | } else { |
681 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
682 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
683 | server->sec_mode &= | |
254e55ed | 684 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 685 | } |
50c2f753 SF |
686 | |
687 | neg_err_exit: | |
4a6d87f1 | 688 | cifs_buf_release(pSMB); |
254e55ed | 689 | |
b6b38f70 | 690 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
691 | return rc; |
692 | } | |
693 | ||
694 | int | |
2e6e02ab | 695 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
696 | { |
697 | struct smb_hdr *smb_buffer; | |
1da177e4 | 698 | int rc = 0; |
1da177e4 | 699 | |
b6b38f70 | 700 | cFYI(1, "In tree disconnect"); |
1da177e4 | 701 | |
f1987b44 JL |
702 | /* BB: do we need to check this? These should never be NULL. */ |
703 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
704 | return -EIO; | |
1da177e4 | 705 | |
f1987b44 JL |
706 | /* |
707 | * No need to return error on this operation if tid invalidated and | |
708 | * closed on server already e.g. due to tcp session crashing. Also, | |
709 | * the tcon is no longer on the list, so no need to take lock before | |
710 | * checking this. | |
711 | */ | |
268875b9 | 712 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 713 | return 0; |
1da177e4 | 714 | |
50c2f753 | 715 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 716 | (void **)&smb_buffer); |
f1987b44 | 717 | if (rc) |
1da177e4 | 718 | return rc; |
133672ef | 719 | |
792af7b0 | 720 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 721 | if (rc) |
b6b38f70 | 722 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 723 | |
50c2f753 | 724 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 725 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
726 | if (rc == -EAGAIN) |
727 | rc = 0; | |
728 | ||
729 | return rc; | |
730 | } | |
731 | ||
766fdbb5 JL |
732 | /* |
733 | * This is a no-op for now. We're not really interested in the reply, but | |
734 | * rather in the fact that the server sent one and that server->lstrp | |
735 | * gets updated. | |
736 | * | |
737 | * FIXME: maybe we should consider checking that the reply matches request? | |
738 | */ | |
739 | static void | |
740 | cifs_echo_callback(struct mid_q_entry *mid) | |
741 | { | |
742 | struct TCP_Server_Info *server = mid->callback_data; | |
743 | ||
744 | DeleteMidQEntry(mid); | |
a891f0f8 | 745 | add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb5 JL |
746 | } |
747 | ||
748 | int | |
749 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
750 | { | |
751 | ECHO_REQ *smb; | |
752 | int rc = 0; | |
fcc31cb6 | 753 | struct kvec iov; |
766fdbb5 JL |
754 | |
755 | cFYI(1, "In echo request"); | |
756 | ||
757 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
758 | if (rc) | |
759 | return rc; | |
760 | ||
761 | /* set up echo request */ | |
5443d130 | 762 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
763 | smb->hdr.WordCount = 1; |
764 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 765 | put_bcc(1, &smb->hdr); |
766fdbb5 | 766 | smb->Data[0] = 'a'; |
be8e3b00 | 767 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
768 | iov.iov_base = smb; |
769 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 770 | |
44d22d84 | 771 | rc = cifs_call_async(server, &iov, 1, NULL, cifs_echo_callback, |
a891f0f8 | 772 | server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb5 JL |
773 | if (rc) |
774 | cFYI(1, "Echo request failed: %d", rc); | |
775 | ||
776 | cifs_small_buf_release(smb); | |
777 | ||
778 | return rc; | |
779 | } | |
780 | ||
1da177e4 | 781 | int |
58c45c58 | 782 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 783 | { |
1da177e4 LT |
784 | LOGOFF_ANDX_REQ *pSMB; |
785 | int rc = 0; | |
1da177e4 | 786 | |
b6b38f70 | 787 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 788 | |
14fbf50d JL |
789 | /* |
790 | * BB: do we need to check validity of ses and server? They should | |
791 | * always be valid since we have an active reference. If not, that | |
792 | * should probably be a BUG() | |
793 | */ | |
794 | if (!ses || !ses->server) | |
3b795210 SF |
795 | return -EIO; |
796 | ||
d7b619cf | 797 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
798 | if (ses->need_reconnect) |
799 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
800 | already closed due to reconnect */ | |
1da177e4 LT |
801 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
802 | if (rc) { | |
d7b619cf | 803 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
804 | return rc; |
805 | } | |
806 | ||
88257360 | 807 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 808 | |
96daf2b0 | 809 | if (ses->server->sec_mode & |
1da177e4 LT |
810 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
811 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
812 | |
813 | pSMB->hdr.Uid = ses->Suid; | |
814 | ||
815 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 816 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 817 | session_already_dead: |
d7b619cf | 818 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
819 | |
820 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 821 | since server closed smb session, no sense reporting |
1da177e4 LT |
822 | error */ |
823 | if (rc == -EAGAIN) | |
824 | rc = 0; | |
825 | return rc; | |
826 | } | |
827 | ||
2d785a50 | 828 | int |
6d5786a3 PS |
829 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
830 | const char *fileName, __u16 type, | |
831 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
832 | { |
833 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
834 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
835 | struct unlink_psx_rq *pRqD; | |
836 | int name_len; | |
837 | int rc = 0; | |
838 | int bytes_returned = 0; | |
839 | __u16 params, param_offset, offset, byte_count; | |
840 | ||
b6b38f70 | 841 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
842 | PsxDelete: |
843 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
844 | (void **) &pSMBr); | |
845 | if (rc) | |
846 | return rc; | |
847 | ||
848 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
849 | name_len = | |
acbbb76a SF |
850 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
851 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
852 | name_len++; /* trailing null */ |
853 | name_len *= 2; | |
854 | } else { /* BB add path length overrun check */ | |
855 | name_len = strnlen(fileName, PATH_MAX); | |
856 | name_len++; /* trailing null */ | |
857 | strncpy(pSMB->FileName, fileName, name_len); | |
858 | } | |
859 | ||
860 | params = 6 + name_len; | |
861 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
862 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
863 | pSMB->MaxSetupCount = 0; | |
864 | pSMB->Reserved = 0; | |
865 | pSMB->Flags = 0; | |
866 | pSMB->Timeout = 0; | |
867 | pSMB->Reserved2 = 0; | |
868 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
869 | InformationLevel) - 4; | |
870 | offset = param_offset + params; | |
871 | ||
872 | /* Setup pointer to Request Data (inode type) */ | |
873 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
874 | pRqD->type = cpu_to_le16(type); | |
875 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
876 | pSMB->DataOffset = cpu_to_le16(offset); | |
877 | pSMB->SetupCount = 1; | |
878 | pSMB->Reserved3 = 0; | |
879 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
880 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
881 | ||
882 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
883 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
884 | pSMB->ParameterCount = cpu_to_le16(params); | |
885 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
886 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
887 | pSMB->Reserved4 = 0; | |
be8e3b00 | 888 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
889 | pSMB->ByteCount = cpu_to_le16(byte_count); |
890 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
891 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 892 | if (rc) |
b6b38f70 | 893 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
894 | cifs_buf_release(pSMB); |
895 | ||
44c58186 | 896 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
897 | |
898 | if (rc == -EAGAIN) | |
899 | goto PsxDelete; | |
900 | ||
901 | return rc; | |
902 | } | |
903 | ||
1da177e4 | 904 | int |
6d5786a3 PS |
905 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
906 | const char *fileName, const struct nls_table *nls_codepage, | |
907 | int remap) | |
1da177e4 LT |
908 | { |
909 | DELETE_FILE_REQ *pSMB = NULL; | |
910 | DELETE_FILE_RSP *pSMBr = NULL; | |
911 | int rc = 0; | |
912 | int bytes_returned; | |
913 | int name_len; | |
914 | ||
915 | DelFileRetry: | |
916 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
917 | (void **) &pSMBr); | |
918 | if (rc) | |
919 | return rc; | |
920 | ||
921 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
922 | name_len = | |
acbbb76a SF |
923 | cifsConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
924 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
925 | name_len++; /* trailing null */ |
926 | name_len *= 2; | |
09d1db5c | 927 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
928 | name_len = strnlen(fileName, PATH_MAX); |
929 | name_len++; /* trailing null */ | |
930 | strncpy(pSMB->fileName, fileName, name_len); | |
931 | } | |
932 | pSMB->SearchAttributes = | |
933 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
934 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 935 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
936 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
937 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
938 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 939 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 940 | if (rc) |
b6b38f70 | 941 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
942 | |
943 | cifs_buf_release(pSMB); | |
944 | if (rc == -EAGAIN) | |
945 | goto DelFileRetry; | |
946 | ||
947 | return rc; | |
948 | } | |
949 | ||
950 | int | |
f958ca5d PS |
951 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
952 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
953 | { |
954 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
955 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
956 | int rc = 0; | |
957 | int bytes_returned; | |
958 | int name_len; | |
f958ca5d | 959 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 960 | |
b6b38f70 | 961 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
962 | RmDirRetry: |
963 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
964 | (void **) &pSMBr); | |
965 | if (rc) | |
966 | return rc; | |
967 | ||
968 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
969 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
970 | PATH_MAX, cifs_sb->local_nls, | |
971 | remap); | |
1da177e4 LT |
972 | name_len++; /* trailing null */ |
973 | name_len *= 2; | |
09d1db5c | 974 | } else { /* BB improve check for buffer overruns BB */ |
f958ca5d | 975 | name_len = strnlen(name, PATH_MAX); |
1da177e4 | 976 | name_len++; /* trailing null */ |
f958ca5d | 977 | strncpy(pSMB->DirName, name, name_len); |
1da177e4 LT |
978 | } |
979 | ||
980 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 981 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
982 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
983 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
984 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 985 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 986 | if (rc) |
b6b38f70 | 987 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
988 | |
989 | cifs_buf_release(pSMB); | |
990 | if (rc == -EAGAIN) | |
991 | goto RmDirRetry; | |
992 | return rc; | |
993 | } | |
994 | ||
995 | int | |
f436720e PS |
996 | CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
997 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
998 | { |
999 | int rc = 0; | |
1000 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
1001 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
1002 | int bytes_returned; | |
1003 | int name_len; | |
f436720e | 1004 | int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; |
1da177e4 | 1005 | |
b6b38f70 | 1006 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
1007 | MkDirRetry: |
1008 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1009 | (void **) &pSMBr); | |
1010 | if (rc) | |
1011 | return rc; | |
1012 | ||
1013 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 1014 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
1015 | PATH_MAX, cifs_sb->local_nls, |
1016 | remap); | |
1da177e4 LT |
1017 | name_len++; /* trailing null */ |
1018 | name_len *= 2; | |
09d1db5c | 1019 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1020 | name_len = strnlen(name, PATH_MAX); |
1021 | name_len++; /* trailing null */ | |
1022 | strncpy(pSMB->DirName, name, name_len); | |
1023 | } | |
1024 | ||
1025 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1026 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1027 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1028 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1029 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 1030 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 1031 | if (rc) |
b6b38f70 | 1032 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 1033 | |
1da177e4 LT |
1034 | cifs_buf_release(pSMB); |
1035 | if (rc == -EAGAIN) | |
1036 | goto MkDirRetry; | |
1037 | return rc; | |
1038 | } | |
1039 | ||
2dd29d31 | 1040 | int |
6d5786a3 PS |
1041 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
1042 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
1043 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
1044 | const char *name, const struct nls_table *nls_codepage, | |
1045 | int remap) | |
2dd29d31 SF |
1046 | { |
1047 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1048 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1049 | int name_len; | |
1050 | int rc = 0; | |
1051 | int bytes_returned = 0; | |
2dd29d31 | 1052 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1053 | OPEN_PSX_REQ *pdata; |
1054 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1055 | |
b6b38f70 | 1056 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1057 | PsxCreat: |
1058 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1059 | (void **) &pSMBr); | |
1060 | if (rc) | |
1061 | return rc; | |
1062 | ||
1063 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1064 | name_len = | |
acbbb76a SF |
1065 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1066 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1067 | name_len++; /* trailing null */ |
1068 | name_len *= 2; | |
1069 | } else { /* BB improve the check for buffer overruns BB */ | |
1070 | name_len = strnlen(name, PATH_MAX); | |
1071 | name_len++; /* trailing null */ | |
1072 | strncpy(pSMB->FileName, name, name_len); | |
1073 | } | |
1074 | ||
1075 | params = 6 + name_len; | |
1076 | count = sizeof(OPEN_PSX_REQ); | |
1077 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1078 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1079 | pSMB->MaxSetupCount = 0; | |
1080 | pSMB->Reserved = 0; | |
1081 | pSMB->Flags = 0; | |
1082 | pSMB->Timeout = 0; | |
1083 | pSMB->Reserved2 = 0; | |
1084 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1085 | InformationLevel) - 4; |
2dd29d31 | 1086 | offset = param_offset + params; |
2dd29d31 | 1087 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1088 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1089 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1090 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1091 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1092 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1093 | pSMB->DataOffset = cpu_to_le16(offset); | |
1094 | pSMB->SetupCount = 1; | |
1095 | pSMB->Reserved3 = 0; | |
1096 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1097 | byte_count = 3 /* pad */ + params + count; | |
1098 | ||
1099 | pSMB->DataCount = cpu_to_le16(count); | |
1100 | pSMB->ParameterCount = cpu_to_le16(params); | |
1101 | pSMB->TotalDataCount = pSMB->DataCount; | |
1102 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1103 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1104 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1105 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1106 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1107 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1108 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1109 | if (rc) { | |
b6b38f70 | 1110 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1111 | goto psx_create_err; |
1112 | } | |
1113 | ||
b6b38f70 | 1114 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1115 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1116 | ||
820a803f | 1117 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1118 | rc = -EIO; /* bad smb */ |
1119 | goto psx_create_err; | |
1120 | } | |
1121 | ||
1122 | /* copy return information to pRetData */ | |
50c2f753 | 1123 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1124 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1125 | |
2dd29d31 | 1126 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1127 | if (netfid) |
2dd29d31 SF |
1128 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1129 | /* Let caller know file was created so we can set the mode. */ | |
1130 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1131 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1132 | *pOplock |= CIFS_CREATE_ACTION; |
1133 | /* check to make sure response data is there */ | |
8f2376ad CG |
1134 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1135 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1136 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1137 | } else { |
820a803f | 1138 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1139 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1140 | cERROR(1, "Open response data too small"); |
8f2376ad | 1141 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1142 | goto psx_create_err; |
1143 | } | |
50c2f753 | 1144 | memcpy((char *) pRetData, |
cbac3cba | 1145 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1146 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1147 | } |
2dd29d31 SF |
1148 | |
1149 | psx_create_err: | |
1150 | cifs_buf_release(pSMB); | |
1151 | ||
65bc98b0 | 1152 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 1153 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 1154 | else |
44c58186 | 1155 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
1156 | |
1157 | if (rc == -EAGAIN) | |
1158 | goto PsxCreat; | |
1159 | ||
50c2f753 | 1160 | return rc; |
2dd29d31 SF |
1161 | } |
1162 | ||
a9d02ad4 SF |
1163 | static __u16 convert_disposition(int disposition) |
1164 | { | |
1165 | __u16 ofun = 0; | |
1166 | ||
1167 | switch (disposition) { | |
1168 | case FILE_SUPERSEDE: | |
1169 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1170 | break; | |
1171 | case FILE_OPEN: | |
1172 | ofun = SMBOPEN_OAPPEND; | |
1173 | break; | |
1174 | case FILE_CREATE: | |
1175 | ofun = SMBOPEN_OCREATE; | |
1176 | break; | |
1177 | case FILE_OPEN_IF: | |
1178 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1179 | break; | |
1180 | case FILE_OVERWRITE: | |
1181 | ofun = SMBOPEN_OTRUNC; | |
1182 | break; | |
1183 | case FILE_OVERWRITE_IF: | |
1184 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1185 | break; | |
1186 | default: | |
b6b38f70 | 1187 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1188 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1189 | } | |
1190 | return ofun; | |
1191 | } | |
1192 | ||
35fc37d5 JL |
1193 | static int |
1194 | access_flags_to_smbopen_mode(const int access_flags) | |
1195 | { | |
1196 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1197 | ||
1198 | if (masked_flags == GENERIC_READ) | |
1199 | return SMBOPEN_READ; | |
1200 | else if (masked_flags == GENERIC_WRITE) | |
1201 | return SMBOPEN_WRITE; | |
1202 | ||
1203 | /* just go for read/write */ | |
1204 | return SMBOPEN_READWRITE; | |
1205 | } | |
1206 | ||
a9d02ad4 | 1207 | int |
6d5786a3 | 1208 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1209 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1210 | const int access_flags, const int create_options, __u16 *netfid, |
1211 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1212 | const struct nls_table *nls_codepage, int remap) |
1213 | { | |
1214 | int rc = -EACCES; | |
1215 | OPENX_REQ *pSMB = NULL; | |
1216 | OPENX_RSP *pSMBr = NULL; | |
1217 | int bytes_returned; | |
1218 | int name_len; | |
1219 | __u16 count; | |
1220 | ||
1221 | OldOpenRetry: | |
1222 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1223 | (void **) &pSMBr); | |
1224 | if (rc) | |
1225 | return rc; | |
1226 | ||
1227 | pSMB->AndXCommand = 0xFF; /* none */ | |
1228 | ||
1229 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1230 | count = 1; /* account for one byte pad to word boundary */ | |
1231 | name_len = | |
acbbb76a SF |
1232 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1233 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1234 | name_len++; /* trailing null */ |
1235 | name_len *= 2; | |
1236 | } else { /* BB improve check for buffer overruns BB */ | |
1237 | count = 0; /* no pad */ | |
1238 | name_len = strnlen(fileName, PATH_MAX); | |
1239 | name_len++; /* trailing null */ | |
1240 | strncpy(pSMB->fileName, fileName, name_len); | |
1241 | } | |
1242 | if (*pOplock & REQ_OPLOCK) | |
1243 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1244 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1245 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1246 | |
a9d02ad4 | 1247 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1248 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1249 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1250 | /* set file as system file if special file such | |
1251 | as fifo and server expecting SFU style and | |
1252 | no Unix extensions */ | |
1253 | ||
790fe579 SF |
1254 | if (create_options & CREATE_OPTION_SPECIAL) |
1255 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1256 | else /* BB FIXME BB */ |
1257 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1258 | |
67750fb9 JL |
1259 | if (create_options & CREATE_OPTION_READONLY) |
1260 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1261 | |
1262 | /* BB FIXME BB */ | |
50c2f753 SF |
1263 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1264 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1265 | /* BB FIXME END BB */ |
3e87d803 SF |
1266 | |
1267 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1268 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1269 | count += name_len; |
be8e3b00 | 1270 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1271 | |
1272 | pSMB->ByteCount = cpu_to_le16(count); | |
1273 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1274 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1275 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1276 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1277 | if (rc) { |
b6b38f70 | 1278 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1279 | } else { |
1280 | /* BB verify if wct == 15 */ | |
1281 | ||
582d21e5 | 1282 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1283 | |
1284 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1285 | /* Let caller know file was created so we can set the mode. */ | |
1286 | /* Do we care about the CreateAction in any other cases? */ | |
1287 | /* BB FIXME BB */ | |
790fe579 | 1288 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1289 | *pOplock |= CIFS_CREATE_ACTION; */ |
1290 | /* BB FIXME END */ | |
1291 | ||
790fe579 | 1292 | if (pfile_info) { |
a9d02ad4 SF |
1293 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1294 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1295 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1296 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1297 | pfile_info->Attributes = |
50c2f753 | 1298 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1299 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1300 | pfile_info->AllocationSize = |
1301 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1302 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1303 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1304 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1305 | } |
1306 | } | |
1307 | ||
1308 | cifs_buf_release(pSMB); | |
1309 | if (rc == -EAGAIN) | |
1310 | goto OldOpenRetry; | |
1311 | return rc; | |
1312 | } | |
1313 | ||
1da177e4 | 1314 | int |
6d5786a3 | 1315 | CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 1316 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1317 | const int access_flags, const int create_options, __u16 *netfid, |
1318 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1319 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1320 | { |
1321 | int rc = -EACCES; | |
1322 | OPEN_REQ *pSMB = NULL; | |
1323 | OPEN_RSP *pSMBr = NULL; | |
1324 | int bytes_returned; | |
1325 | int name_len; | |
1326 | __u16 count; | |
1327 | ||
1328 | openRetry: | |
1329 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1330 | (void **) &pSMBr); | |
1331 | if (rc) | |
1332 | return rc; | |
1333 | ||
1334 | pSMB->AndXCommand = 0xFF; /* none */ | |
1335 | ||
1336 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1337 | count = 1; /* account for one byte pad to word boundary */ | |
1338 | name_len = | |
acbbb76a SF |
1339 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1340 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1341 | name_len++; /* trailing null */ |
1342 | name_len *= 2; | |
1343 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1344 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1345 | count = 0; /* no pad */ |
1346 | name_len = strnlen(fileName, PATH_MAX); | |
1347 | name_len++; /* trailing null */ | |
1348 | pSMB->NameLength = cpu_to_le16(name_len); | |
1349 | strncpy(pSMB->fileName, fileName, name_len); | |
1350 | } | |
1351 | if (*pOplock & REQ_OPLOCK) | |
1352 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1353 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1354 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1355 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1356 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1357 | /* set file as system file if special file such |
1358 | as fifo and server expecting SFU style and | |
1359 | no Unix extensions */ | |
790fe579 | 1360 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1361 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1362 | else | |
1363 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1364 | |
1da177e4 LT |
1365 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1366 | /* but it helps speed up case sensitive checks for other | |
1367 | servers such as Samba */ | |
1368 | if (tcon->ses->capabilities & CAP_UNIX) | |
1369 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1370 | ||
67750fb9 JL |
1371 | if (create_options & CREATE_OPTION_READONLY) |
1372 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1373 | ||
1da177e4 LT |
1374 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1375 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1376 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1377 | /* BB Expirement with various impersonation levels and verify */ |
1378 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1379 | pSMB->SecurityFlags = |
1380 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1381 | ||
1382 | count += name_len; | |
be8e3b00 | 1383 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1384 | |
1385 | pSMB->ByteCount = cpu_to_le16(count); | |
1386 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1387 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1388 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1389 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1390 | if (rc) { |
b6b38f70 | 1391 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1392 | } else { |
09d1db5c | 1393 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1394 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1395 | /* Let caller know file was created so we can set the mode. */ | |
1396 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1397 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1398 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1399 | if (pfile_info) { |
61e74801 SF |
1400 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1401 | 36 /* CreationTime to Attributes */); | |
1402 | /* the file_info buf is endian converted by caller */ | |
1403 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1404 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1405 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1406 | pfile_info->DeletePending = 0; | |
1da177e4 | 1407 | } |
1da177e4 | 1408 | } |
a5a2b489 | 1409 | |
1da177e4 LT |
1410 | cifs_buf_release(pSMB); |
1411 | if (rc == -EAGAIN) | |
1412 | goto openRetry; | |
1413 | return rc; | |
1414 | } | |
1415 | ||
e28bc5b1 JL |
1416 | /* |
1417 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1418 | * current bigbuf. | |
1419 | */ | |
1420 | static int | |
1421 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1422 | { | |
5ffef7bf | 1423 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1424 | int remaining = rfclen + 4 - server->total_read; |
1425 | struct cifs_readdata *rdata = mid->callback_data; | |
1426 | ||
1427 | while (remaining > 0) { | |
1428 | int length; | |
1429 | ||
1430 | length = cifs_read_from_socket(server, server->bigbuf, | |
1431 | min_t(unsigned int, remaining, | |
1887f601 | 1432 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1433 | if (length < 0) |
1434 | return length; | |
1435 | server->total_read += length; | |
1436 | remaining -= length; | |
1437 | } | |
1438 | ||
1439 | dequeue_mid(mid, rdata->result); | |
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | static int | |
1444 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1445 | { | |
1446 | int length, len; | |
8d5ce4d2 | 1447 | unsigned int data_offset, data_len; |
e28bc5b1 | 1448 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1449 | char *buf = server->smallbuf; |
1450 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1451 | |
7c9421e1 | 1452 | cFYI(1, "%s: mid=%llu offset=%llu bytes=%u", __func__, |
e28bc5b1 JL |
1453 | mid->mid, rdata->offset, rdata->bytes); |
1454 | ||
1455 | /* | |
1456 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1457 | * can if there's not enough data. At this point, we've read down to | |
1458 | * the Mid. | |
1459 | */ | |
eb378711 | 1460 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1461 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1462 | |
1887f601 | 1463 | rdata->iov[0].iov_base = buf + HEADER_SIZE(server) - 1; |
e28bc5b1 JL |
1464 | rdata->iov[0].iov_len = len; |
1465 | ||
1466 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1467 | if (length < 0) | |
1468 | return length; | |
1469 | server->total_read += length; | |
1470 | ||
1471 | /* Was the SMB read successful? */ | |
eb378711 | 1472 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 JL |
1473 | if (rdata->result != 0) { |
1474 | cFYI(1, "%s: server returned error %d", __func__, | |
1475 | rdata->result); | |
1476 | return cifs_readv_discard(server, mid); | |
1477 | } | |
1478 | ||
1479 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1480 | if (server->total_read < server->vals->read_rsp_size) { |
e28bc5b1 | 1481 | cFYI(1, "%s: server returned short header. got=%u expected=%zu", |
eb378711 PS |
1482 | __func__, server->total_read, |
1483 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1484 | rdata->result = -EIO; |
1485 | return cifs_readv_discard(server, mid); | |
1486 | } | |
1487 | ||
eb378711 | 1488 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1489 | if (data_offset < server->total_read) { |
1490 | /* | |
1491 | * win2k8 sometimes sends an offset of 0 when the read | |
1492 | * is beyond the EOF. Treat it as if the data starts just after | |
1493 | * the header. | |
1494 | */ | |
1495 | cFYI(1, "%s: data offset (%u) inside read response header", | |
1496 | __func__, data_offset); | |
1497 | data_offset = server->total_read; | |
1498 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1499 | /* data_offset is beyond the end of smallbuf */ | |
1500 | cFYI(1, "%s: data offset (%u) beyond end of smallbuf", | |
1501 | __func__, data_offset); | |
1502 | rdata->result = -EIO; | |
1503 | return cifs_readv_discard(server, mid); | |
1504 | } | |
1505 | ||
1506 | cFYI(1, "%s: total_read=%u data_offset=%u", __func__, | |
1507 | server->total_read, data_offset); | |
1508 | ||
1509 | len = data_offset - server->total_read; | |
1510 | if (len > 0) { | |
1511 | /* read any junk before data into the rest of smallbuf */ | |
5ffef7bf | 1512 | rdata->iov[0].iov_base = buf + server->total_read; |
e28bc5b1 JL |
1513 | rdata->iov[0].iov_len = len; |
1514 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1515 | if (length < 0) | |
1516 | return length; | |
1517 | server->total_read += length; | |
1518 | } | |
1519 | ||
1520 | /* set up first iov for signature check */ | |
5ffef7bf | 1521 | rdata->iov[0].iov_base = buf; |
e28bc5b1 JL |
1522 | rdata->iov[0].iov_len = server->total_read; |
1523 | cFYI(1, "0: iov_base=%p iov_len=%zu", | |
1524 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
1525 | ||
1526 | /* how much data is in the response? */ | |
eb378711 | 1527 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1528 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1529 | /* data_len is corrupt -- discard frame */ |
1530 | rdata->result = -EIO; | |
1531 | return cifs_readv_discard(server, mid); | |
1532 | } | |
1533 | ||
1534 | /* marshal up the page array */ | |
3cf003c0 | 1535 | cifs_kmap_lock(); |
8d5ce4d2 | 1536 | len = rdata->marshal_iov(rdata, data_len); |
3cf003c0 | 1537 | cifs_kmap_unlock(); |
8d5ce4d2 | 1538 | data_len -= len; |
e28bc5b1 JL |
1539 | |
1540 | /* issue the read if we have any iovecs left to fill */ | |
1541 | if (rdata->nr_iov > 1) { | |
1542 | length = cifs_readv_from_socket(server, &rdata->iov[1], | |
1543 | rdata->nr_iov - 1, len); | |
1544 | if (length < 0) | |
1545 | return length; | |
1546 | server->total_read += length; | |
1547 | } else { | |
1548 | length = 0; | |
1549 | } | |
1550 | ||
1551 | rdata->bytes = length; | |
1552 | ||
5ffef7bf | 1553 | cFYI(1, "total_read=%u buflen=%u remaining=%u", server->total_read, |
8d5ce4d2 | 1554 | buflen, data_len); |
e28bc5b1 JL |
1555 | |
1556 | /* discard anything left over */ | |
5ffef7bf | 1557 | if (server->total_read < buflen) |
e28bc5b1 JL |
1558 | return cifs_readv_discard(server, mid); |
1559 | ||
1560 | dequeue_mid(mid, false); | |
1561 | return length; | |
1562 | } | |
1563 | ||
e28bc5b1 JL |
1564 | static void |
1565 | cifs_readv_callback(struct mid_q_entry *mid) | |
1566 | { | |
1567 | struct cifs_readdata *rdata = mid->callback_data; | |
1568 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1569 | struct TCP_Server_Info *server = tcon->ses->server; | |
1570 | ||
7c9421e1 PS |
1571 | cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__, |
1572 | mid->mid, mid->mid_state, rdata->result, rdata->bytes); | |
e28bc5b1 | 1573 | |
7c9421e1 | 1574 | switch (mid->mid_state) { |
e28bc5b1 JL |
1575 | case MID_RESPONSE_RECEIVED: |
1576 | /* result already set, check signature */ | |
1577 | if (server->sec_mode & | |
1578 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { | |
1579 | if (cifs_verify_signature(rdata->iov, rdata->nr_iov, | |
1580 | server, mid->sequence_number + 1)) | |
1581 | cERROR(1, "Unexpected SMB signature"); | |
1582 | } | |
1583 | /* FIXME: should this be counted toward the initiating task? */ | |
1584 | task_io_account_read(rdata->bytes); | |
1585 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1586 | break; | |
1587 | case MID_REQUEST_SUBMITTED: | |
1588 | case MID_RETRY_NEEDED: | |
1589 | rdata->result = -EAGAIN; | |
1590 | break; | |
1591 | default: | |
1592 | rdata->result = -EIO; | |
1593 | } | |
1594 | ||
da472fc8 | 1595 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1596 | DeleteMidQEntry(mid); |
a891f0f8 | 1597 | add_credits(server, 1, 0); |
e28bc5b1 JL |
1598 | } |
1599 | ||
1600 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1601 | int | |
1602 | cifs_async_readv(struct cifs_readdata *rdata) | |
1603 | { | |
1604 | int rc; | |
1605 | READ_REQ *smb = NULL; | |
1606 | int wct; | |
1607 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1608 | ||
1609 | cFYI(1, "%s: offset=%llu bytes=%u", __func__, | |
1610 | rdata->offset, rdata->bytes); | |
1611 | ||
1612 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1613 | wct = 12; | |
1614 | else { | |
1615 | wct = 10; /* old style read */ | |
1616 | if ((rdata->offset >> 32) > 0) { | |
1617 | /* can not handle this big offset for old */ | |
1618 | return -EIO; | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1623 | if (rc) | |
1624 | return rc; | |
1625 | ||
1626 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1627 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1628 | ||
1629 | smb->AndXCommand = 0xFF; /* none */ | |
1630 | smb->Fid = rdata->cfile->netfid; | |
1631 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); | |
1632 | if (wct == 12) | |
1633 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1634 | smb->Remaining = 0; | |
1635 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1636 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1637 | if (wct == 12) | |
1638 | smb->ByteCount = 0; | |
1639 | else { | |
1640 | /* old style read */ | |
1641 | struct smb_com_readx_req *smbr = | |
1642 | (struct smb_com_readx_req *)smb; | |
1643 | smbr->ByteCount = 0; | |
1644 | } | |
1645 | ||
1646 | /* 4 for RFC1001 length + 1 for BCC */ | |
1647 | rdata->iov[0].iov_base = smb; | |
1648 | rdata->iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
1649 | ||
6993f74a | 1650 | kref_get(&rdata->refcount); |
e28bc5b1 JL |
1651 | rc = cifs_call_async(tcon->ses->server, rdata->iov, 1, |
1652 | cifs_readv_receive, cifs_readv_callback, | |
a891f0f8 | 1653 | rdata, 0); |
e28bc5b1 JL |
1654 | |
1655 | if (rc == 0) | |
44c58186 | 1656 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1657 | else |
1658 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1659 | |
1660 | cifs_small_buf_release(smb); | |
1661 | return rc; | |
1662 | } | |
1663 | ||
1da177e4 | 1664 | int |
6d5786a3 PS |
1665 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1666 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1667 | { |
1668 | int rc = -EACCES; | |
1669 | READ_REQ *pSMB = NULL; | |
1670 | READ_RSP *pSMBr = NULL; | |
1671 | char *pReadData = NULL; | |
bfa0d75a | 1672 | int wct; |
ec637e3f SF |
1673 | int resp_buf_type = 0; |
1674 | struct kvec iov[1]; | |
d4ffff1f PS |
1675 | __u32 pid = io_parms->pid; |
1676 | __u16 netfid = io_parms->netfid; | |
1677 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1678 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1679 | unsigned int count = io_parms->length; |
1da177e4 | 1680 | |
b6b38f70 | 1681 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1682 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1683 | wct = 12; |
4c3130ef | 1684 | else { |
bfa0d75a | 1685 | wct = 10; /* old style read */ |
d4ffff1f | 1686 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1687 | /* can not handle this big offset for old */ |
1688 | return -EIO; | |
1689 | } | |
1690 | } | |
1da177e4 LT |
1691 | |
1692 | *nbytes = 0; | |
ec637e3f | 1693 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1694 | if (rc) |
1695 | return rc; | |
1696 | ||
d4ffff1f PS |
1697 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1698 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1699 | ||
1da177e4 LT |
1700 | /* tcon and ses pointer are checked in smb_init */ |
1701 | if (tcon->ses->server == NULL) | |
1702 | return -ECONNABORTED; | |
1703 | ||
ec637e3f | 1704 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1705 | pSMB->Fid = netfid; |
d4ffff1f | 1706 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1707 | if (wct == 12) |
d4ffff1f | 1708 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1709 | |
1da177e4 LT |
1710 | pSMB->Remaining = 0; |
1711 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1712 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1713 | if (wct == 12) |
bfa0d75a SF |
1714 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1715 | else { | |
1716 | /* old style read */ | |
50c2f753 | 1717 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1718 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1719 | pSMBW->ByteCount = 0; |
bfa0d75a | 1720 | } |
ec637e3f SF |
1721 | |
1722 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1723 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1724 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1725 | &resp_buf_type, CIFS_LOG_ERROR); |
44c58186 | 1726 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3f | 1727 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1728 | if (rc) { |
b6b38f70 | 1729 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1730 | } else { |
1731 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1732 | data_length = data_length << 16; | |
1733 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1734 | *nbytes = data_length; | |
1735 | ||
1736 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1737 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1738 | || (data_length > count)) { |
b6b38f70 JP |
1739 | cFYI(1, "bad length %d for count %d", |
1740 | data_length, count); | |
1da177e4 LT |
1741 | rc = -EIO; |
1742 | *nbytes = 0; | |
1743 | } else { | |
ec637e3f | 1744 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1745 | le16_to_cpu(pSMBr->DataOffset); |
1746 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1747 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1748 | rc = -EFAULT; |
26f57364 | 1749 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1750 | if (*buf) |
50c2f753 | 1751 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1752 | } |
1753 | } | |
1da177e4 | 1754 | |
4b8f930f | 1755 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1756 | if (*buf) { |
1757 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1758 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1759 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1760 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1761 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1762 | /* return buffer to caller to free */ |
1763 | *buf = iov[0].iov_base; | |
790fe579 | 1764 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1765 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1766 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1767 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1768 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1769 | |
1770 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1771 | since file handle passed in no longer valid */ |
1772 | return rc; | |
1773 | } | |
1774 | ||
ec637e3f | 1775 | |
1da177e4 | 1776 | int |
6d5786a3 | 1777 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 | 1778 | unsigned int *nbytes, const char *buf, |
50c2f753 | 1779 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1780 | { |
1781 | int rc = -EACCES; | |
1782 | WRITE_REQ *pSMB = NULL; | |
1783 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1784 | int bytes_returned, wct; |
1da177e4 LT |
1785 | __u32 bytes_sent; |
1786 | __u16 byte_count; | |
fa2989f4 PS |
1787 | __u32 pid = io_parms->pid; |
1788 | __u16 netfid = io_parms->netfid; | |
1789 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1790 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1791 | unsigned int count = io_parms->length; |
1da177e4 | 1792 | |
a24e2d7d SF |
1793 | *nbytes = 0; |
1794 | ||
b6b38f70 | 1795 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1796 | if (tcon->ses == NULL) |
1c955187 SF |
1797 | return -ECONNABORTED; |
1798 | ||
790fe579 | 1799 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1800 | wct = 14; |
4c3130ef | 1801 | else { |
1c955187 | 1802 | wct = 12; |
4c3130ef SF |
1803 | if ((offset >> 32) > 0) { |
1804 | /* can not handle big offset for old srv */ | |
1805 | return -EIO; | |
1806 | } | |
1807 | } | |
1c955187 SF |
1808 | |
1809 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1810 | (void **) &pSMBr); |
1811 | if (rc) | |
1812 | return rc; | |
fa2989f4 PS |
1813 | |
1814 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1815 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1816 | ||
1da177e4 LT |
1817 | /* tcon and ses pointer are checked in smb_init */ |
1818 | if (tcon->ses->server == NULL) | |
1819 | return -ECONNABORTED; | |
1820 | ||
1821 | pSMB->AndXCommand = 0xFF; /* none */ | |
1822 | pSMB->Fid = netfid; | |
1823 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1824 | if (wct == 14) |
1c955187 | 1825 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1826 | |
1da177e4 LT |
1827 | pSMB->Reserved = 0xFFFFFFFF; |
1828 | pSMB->WriteMode = 0; | |
1829 | pSMB->Remaining = 0; | |
1830 | ||
50c2f753 | 1831 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1832 | can send more if LARGE_WRITE_X capability returned by the server and if |
1833 | our buffer is big enough or if we convert to iovecs on socket writes | |
1834 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1835 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1836 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1837 | } else { | |
1838 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1839 | & ~0xFF; | |
1840 | } | |
1841 | ||
1842 | if (bytes_sent > count) | |
1843 | bytes_sent = count; | |
1844 | pSMB->DataOffset = | |
50c2f753 | 1845 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1846 | if (buf) |
61e74801 | 1847 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1848 | else if (ubuf) { |
1849 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1850 | cifs_buf_release(pSMB); |
1851 | return -EFAULT; | |
1852 | } | |
e30dcf3a | 1853 | } else if (count != 0) { |
1da177e4 LT |
1854 | /* No buffer */ |
1855 | cifs_buf_release(pSMB); | |
1856 | return -EINVAL; | |
e30dcf3a | 1857 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1858 | if (wct == 14) |
e30dcf3a | 1859 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1860 | else /* wct == 12 */ |
e30dcf3a | 1861 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1862 | |
1da177e4 LT |
1863 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1864 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1865 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1866 | |
790fe579 | 1867 | if (wct == 14) |
1c955187 | 1868 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1869 | else { /* old style write has byte count 4 bytes earlier |
1870 | so 4 bytes pad */ | |
1871 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1872 | (struct smb_com_writex_req *)pSMB; |
1873 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1874 | } | |
1da177e4 LT |
1875 | |
1876 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1877 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
44c58186 | 1878 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1879 | if (rc) { |
f19159dc | 1880 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1881 | } else { |
1882 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1883 | *nbytes = (*nbytes) << 16; | |
1884 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1885 | |
1886 | /* | |
1887 | * Mask off high 16 bits when bytes written as returned by the | |
1888 | * server is greater than bytes requested by the client. Some | |
1889 | * OS/2 servers are known to set incorrect CountHigh values. | |
1890 | */ | |
1891 | if (*nbytes > count) | |
1892 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1893 | } |
1894 | ||
1895 | cifs_buf_release(pSMB); | |
1896 | ||
50c2f753 | 1897 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1898 | since file handle passed in no longer valid */ |
1899 | ||
1900 | return rc; | |
1901 | } | |
1902 | ||
c28c89fc JL |
1903 | void |
1904 | cifs_writedata_release(struct kref *refcount) | |
1905 | { | |
1906 | struct cifs_writedata *wdata = container_of(refcount, | |
1907 | struct cifs_writedata, refcount); | |
1908 | ||
1909 | if (wdata->cfile) | |
1910 | cifsFileInfo_put(wdata->cfile); | |
1911 | ||
1912 | kfree(wdata); | |
1913 | } | |
1914 | ||
1915 | /* | |
1916 | * Write failed with a retryable error. Resend the write request. It's also | |
1917 | * possible that the page was redirtied so re-clean the page. | |
1918 | */ | |
1919 | static void | |
1920 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1921 | { | |
1922 | int i, rc; | |
1923 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1924 | ||
1925 | for (i = 0; i < wdata->nr_pages; i++) { | |
1926 | lock_page(wdata->pages[i]); | |
1927 | clear_page_dirty_for_io(wdata->pages[i]); | |
1928 | } | |
1929 | ||
1930 | do { | |
1931 | rc = cifs_async_writev(wdata); | |
1932 | } while (rc == -EAGAIN); | |
1933 | ||
1934 | for (i = 0; i < wdata->nr_pages; i++) { | |
1935 | if (rc != 0) | |
1936 | SetPageError(wdata->pages[i]); | |
1937 | unlock_page(wdata->pages[i]); | |
1938 | } | |
1939 | ||
1940 | mapping_set_error(inode->i_mapping, rc); | |
1941 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1942 | } | |
1943 | ||
c2e87640 | 1944 | void |
c28c89fc JL |
1945 | cifs_writev_complete(struct work_struct *work) |
1946 | { | |
1947 | struct cifs_writedata *wdata = container_of(work, | |
1948 | struct cifs_writedata, work); | |
1949 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1950 | int i = 0; | |
1951 | ||
1952 | if (wdata->result == 0) { | |
597b027f | 1953 | spin_lock(&inode->i_lock); |
c28c89fc | 1954 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1955 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1956 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1957 | wdata->bytes); | |
1958 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1959 | return cifs_writev_requeue(wdata); | |
1960 | ||
1961 | for (i = 0; i < wdata->nr_pages; i++) { | |
1962 | struct page *page = wdata->pages[i]; | |
1963 | if (wdata->result == -EAGAIN) | |
1964 | __set_page_dirty_nobuffers(page); | |
1965 | else if (wdata->result < 0) | |
1966 | SetPageError(page); | |
1967 | end_page_writeback(page); | |
1968 | page_cache_release(page); | |
1969 | } | |
1970 | if (wdata->result != -EAGAIN) | |
1971 | mapping_set_error(inode->i_mapping, wdata->result); | |
1972 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1973 | } | |
1974 | ||
1975 | struct cifs_writedata * | |
c2e87640 | 1976 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1977 | { |
1978 | struct cifs_writedata *wdata; | |
1979 | ||
1980 | /* this would overflow */ | |
1981 | if (nr_pages == 0) { | |
1982 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
1983 | return NULL; | |
1984 | } | |
1985 | ||
1986 | /* writedata + number of page pointers */ | |
1987 | wdata = kzalloc(sizeof(*wdata) + | |
1988 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1989 | if (wdata != NULL) { | |
c28c89fc | 1990 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1991 | INIT_LIST_HEAD(&wdata->list); |
1992 | init_completion(&wdata->done); | |
1993 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1994 | } |
1995 | return wdata; | |
1996 | } | |
1997 | ||
1998 | /* | |
7c9421e1 | 1999 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2000 | * workqueue completion task. |
2001 | */ | |
2002 | static void | |
2003 | cifs_writev_callback(struct mid_q_entry *mid) | |
2004 | { | |
2005 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2006 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2007 | unsigned int written; |
2008 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2009 | ||
7c9421e1 | 2010 | switch (mid->mid_state) { |
c28c89fc JL |
2011 | case MID_RESPONSE_RECEIVED: |
2012 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2013 | if (wdata->result != 0) | |
2014 | break; | |
2015 | ||
2016 | written = le16_to_cpu(smb->CountHigh); | |
2017 | written <<= 16; | |
2018 | written += le16_to_cpu(smb->Count); | |
2019 | /* | |
2020 | * Mask off high 16 bits when bytes written as returned | |
2021 | * by the server is greater than bytes requested by the | |
2022 | * client. OS/2 servers are known to set incorrect | |
2023 | * CountHigh values. | |
2024 | */ | |
2025 | if (written > wdata->bytes) | |
2026 | written &= 0xFFFF; | |
2027 | ||
2028 | if (written < wdata->bytes) | |
2029 | wdata->result = -ENOSPC; | |
2030 | else | |
2031 | wdata->bytes = written; | |
2032 | break; | |
2033 | case MID_REQUEST_SUBMITTED: | |
2034 | case MID_RETRY_NEEDED: | |
2035 | wdata->result = -EAGAIN; | |
2036 | break; | |
2037 | default: | |
2038 | wdata->result = -EIO; | |
2039 | break; | |
2040 | } | |
2041 | ||
da472fc8 | 2042 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2043 | DeleteMidQEntry(mid); |
a891f0f8 | 2044 | add_credits(tcon->ses->server, 1, 0); |
c28c89fc JL |
2045 | } |
2046 | ||
2047 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2048 | int | |
2049 | cifs_async_writev(struct cifs_writedata *wdata) | |
2050 | { | |
2051 | int i, rc = -EACCES; | |
2052 | WRITE_REQ *smb = NULL; | |
2053 | int wct; | |
96daf2b0 | 2054 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2055 | struct kvec *iov = NULL; |
2056 | ||
2057 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2058 | wct = 14; | |
2059 | } else { | |
2060 | wct = 12; | |
2061 | if (wdata->offset >> 32 > 0) { | |
2062 | /* can not handle big offset for old srv */ | |
2063 | return -EIO; | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2068 | if (rc) | |
2069 | goto async_writev_out; | |
2070 | ||
2071 | /* 1 iov per page + 1 for header */ | |
2072 | iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS); | |
2073 | if (iov == NULL) { | |
2074 | rc = -ENOMEM; | |
2075 | goto async_writev_out; | |
2076 | } | |
2077 | ||
fe5f5d2e JL |
2078 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2079 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2080 | |
c28c89fc JL |
2081 | smb->AndXCommand = 0xFF; /* none */ |
2082 | smb->Fid = wdata->cfile->netfid; | |
2083 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); | |
2084 | if (wct == 14) | |
2085 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2086 | smb->Reserved = 0xFFFFFFFF; | |
2087 | smb->WriteMode = 0; | |
2088 | smb->Remaining = 0; | |
2089 | ||
2090 | smb->DataOffset = | |
2091 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2092 | ||
2093 | /* 4 for RFC1001 length + 1 for BCC */ | |
2094 | iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; | |
2095 | iov[0].iov_base = smb; | |
2096 | ||
e9492871 JL |
2097 | /* |
2098 | * This function should marshal up the page array into the kvec | |
2099 | * array, reserving [0] for the header. It should kmap the pages | |
2100 | * and set the iov_len properly for each one. It may also set | |
2101 | * wdata->bytes too. | |
2102 | */ | |
3cf003c0 | 2103 | cifs_kmap_lock(); |
e9492871 | 2104 | wdata->marshal_iov(iov, wdata); |
3cf003c0 | 2105 | cifs_kmap_unlock(); |
c28c89fc JL |
2106 | |
2107 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
2108 | ||
2109 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2110 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2111 | ||
2112 | if (wct == 14) { | |
2113 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2114 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2115 | } else { | |
2116 | /* wct == 12 */ | |
2117 | struct smb_com_writex_req *smbw = | |
2118 | (struct smb_com_writex_req *)smb; | |
2119 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2120 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
2121 | iov[0].iov_len += 4; /* pad bigger by four bytes */ | |
2122 | } | |
2123 | ||
2124 | kref_get(&wdata->refcount); | |
2125 | rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1, | |
a891f0f8 | 2126 | NULL, cifs_writev_callback, wdata, 0); |
c28c89fc JL |
2127 | |
2128 | if (rc == 0) | |
44c58186 | 2129 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc JL |
2130 | else |
2131 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2132 | ||
2133 | /* send is done, unmap pages */ | |
2134 | for (i = 0; i < wdata->nr_pages; i++) | |
2135 | kunmap(wdata->pages[i]); | |
2136 | ||
2137 | async_writev_out: | |
2138 | cifs_small_buf_release(smb); | |
2139 | kfree(iov); | |
2140 | return rc; | |
2141 | } | |
2142 | ||
d6e04ae6 | 2143 | int |
6d5786a3 | 2144 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f4 PS |
2145 | unsigned int *nbytes, struct kvec *iov, int n_vec, |
2146 | const int long_op) | |
1da177e4 LT |
2147 | { |
2148 | int rc = -EACCES; | |
2149 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2150 | int wct; |
d6e04ae6 | 2151 | int smb_hdr_len; |
ec637e3f | 2152 | int resp_buf_type = 0; |
fa2989f4 PS |
2153 | __u32 pid = io_parms->pid; |
2154 | __u16 netfid = io_parms->netfid; | |
2155 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2156 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2157 | unsigned int count = io_parms->length; |
1da177e4 | 2158 | |
fbec9ab9 JL |
2159 | *nbytes = 0; |
2160 | ||
b6b38f70 | 2161 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 2162 | |
4c3130ef | 2163 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2164 | wct = 14; |
4c3130ef | 2165 | } else { |
8cc64c6e | 2166 | wct = 12; |
4c3130ef SF |
2167 | if ((offset >> 32) > 0) { |
2168 | /* can not handle big offset for old srv */ | |
2169 | return -EIO; | |
2170 | } | |
2171 | } | |
8cc64c6e | 2172 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2173 | if (rc) |
2174 | return rc; | |
fa2989f4 PS |
2175 | |
2176 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2177 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2178 | ||
1da177e4 LT |
2179 | /* tcon and ses pointer are checked in smb_init */ |
2180 | if (tcon->ses->server == NULL) | |
2181 | return -ECONNABORTED; | |
2182 | ||
d6e04ae6 | 2183 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2184 | pSMB->Fid = netfid; |
2185 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2186 | if (wct == 14) |
8cc64c6e | 2187 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2188 | pSMB->Reserved = 0xFFFFFFFF; |
2189 | pSMB->WriteMode = 0; | |
2190 | pSMB->Remaining = 0; | |
d6e04ae6 | 2191 | |
1da177e4 | 2192 | pSMB->DataOffset = |
50c2f753 | 2193 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2194 | |
3e84469d SF |
2195 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2196 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2197 | /* header + 1 byte pad */ |
2198 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2199 | if (wct == 14) |
be8e3b00 | 2200 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2201 | else /* wct == 12 */ |
be8e3b00 | 2202 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2203 | if (wct == 14) |
8cc64c6e SF |
2204 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2205 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2206 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2207 | (struct smb_com_writex_req *)pSMB; |
2208 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2209 | } | |
3e84469d | 2210 | iov[0].iov_base = pSMB; |
790fe579 | 2211 | if (wct == 14) |
ec637e3f SF |
2212 | iov[0].iov_len = smb_hdr_len + 4; |
2213 | else /* wct == 12 pad bigger by four bytes */ | |
2214 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2215 | |
1da177e4 | 2216 | |
ec637e3f | 2217 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 2218 | long_op); |
44c58186 | 2219 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 2220 | if (rc) { |
b6b38f70 | 2221 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 2222 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2223 | /* presumably this can not happen, but best to be safe */ |
2224 | rc = -EIO; | |
d6e04ae6 | 2225 | } else { |
ad7a2926 | 2226 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2227 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2228 | *nbytes = (*nbytes) << 16; | |
2229 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2230 | |
2231 | /* | |
2232 | * Mask off high 16 bits when bytes written as returned by the | |
2233 | * server is greater than bytes requested by the client. OS/2 | |
2234 | * servers are known to set incorrect CountHigh values. | |
2235 | */ | |
2236 | if (*nbytes > count) | |
2237 | *nbytes &= 0xFFFF; | |
50c2f753 | 2238 | } |
1da177e4 | 2239 | |
4b8f930f | 2240 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2241 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2242 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2243 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2244 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2245 | |
50c2f753 | 2246 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2247 | since file handle passed in no longer valid */ |
2248 | ||
2249 | return rc; | |
2250 | } | |
d6e04ae6 | 2251 | |
6d5786a3 PS |
2252 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
2253 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
2254 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
2255 | { | |
2256 | int rc = 0; | |
2257 | LOCK_REQ *pSMB = NULL; | |
2258 | struct kvec iov[2]; | |
2259 | int resp_buf_type; | |
2260 | __u16 count; | |
2261 | ||
2262 | cFYI(1, "cifs_lockv num lock %d num unlock %d", num_lock, num_unlock); | |
2263 | ||
2264 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2265 | if (rc) | |
2266 | return rc; | |
2267 | ||
2268 | pSMB->Timeout = 0; | |
2269 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2270 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2271 | pSMB->LockType = lock_type; | |
2272 | pSMB->AndXCommand = 0xFF; /* none */ | |
2273 | pSMB->Fid = netfid; /* netfid stays le */ | |
2274 | ||
2275 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2276 | inc_rfc1001_len(pSMB, count); | |
2277 | pSMB->ByteCount = cpu_to_le16(count); | |
2278 | ||
2279 | iov[0].iov_base = (char *)pSMB; | |
2280 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2281 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2282 | iov[1].iov_base = (char *)buf; | |
2283 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2284 | ||
44c58186 | 2285 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b7 PS |
2286 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); |
2287 | if (rc) | |
2288 | cFYI(1, "Send error in cifs_lockv = %d", rc); | |
2289 | ||
2290 | return rc; | |
2291 | } | |
d6e04ae6 | 2292 | |
1da177e4 | 2293 | int |
6d5786a3 | 2294 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 2295 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2296 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2297 | const __u32 numLock, const __u8 lockType, |
2298 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2299 | { |
2300 | int rc = 0; | |
2301 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2302 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 2303 | int bytes_returned; |
a891f0f8 | 2304 | int flags = 0; |
1da177e4 LT |
2305 | __u16 count; |
2306 | ||
b6b38f70 | 2307 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
2308 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2309 | ||
1da177e4 LT |
2310 | if (rc) |
2311 | return rc; | |
2312 | ||
790fe579 | 2313 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 PS |
2314 | /* no response expected */ |
2315 | flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; | |
1da177e4 | 2316 | pSMB->Timeout = 0; |
4b18f2a9 | 2317 | } else if (waitFlag) { |
a891f0f8 | 2318 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2319 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2320 | } else { | |
2321 | pSMB->Timeout = 0; | |
2322 | } | |
2323 | ||
2324 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2325 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2326 | pSMB->LockType = lockType; | |
12fed00d | 2327 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2328 | pSMB->AndXCommand = 0xFF; /* none */ |
2329 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2330 | ||
790fe579 | 2331 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2332 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2333 | /* BB where to store pid high? */ |
2334 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2335 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2336 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2337 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2338 | count = sizeof(LOCKING_ANDX_RANGE); | |
2339 | } else { | |
2340 | /* oplock break */ | |
2341 | count = 0; | |
2342 | } | |
be8e3b00 | 2343 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2344 | pSMB->ByteCount = cpu_to_le16(count); |
2345 | ||
7ee1af76 JA |
2346 | if (waitFlag) { |
2347 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2348 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2349 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2350 | } else { |
a891f0f8 | 2351 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672ef | 2352 | /* SMB buffer freed by function above */ |
7ee1af76 | 2353 | } |
44c58186 | 2354 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 2355 | if (rc) |
b6b38f70 | 2356 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2357 | |
50c2f753 | 2358 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2359 | since file handle passed in no longer valid */ |
2360 | return rc; | |
2361 | } | |
2362 | ||
08547b03 | 2363 | int |
6d5786a3 | 2364 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
2365 | const __u16 smb_file_id, const __u32 netpid, |
2366 | const loff_t start_offset, const __u64 len, | |
2367 | struct file_lock *pLockData, const __u16 lock_type, | |
2368 | const bool waitFlag) | |
08547b03 SF |
2369 | { |
2370 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2371 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2372 | struct cifs_posix_lock *parm_data; |
2373 | int rc = 0; | |
3a5ff61c | 2374 | int timeout = 0; |
08547b03 | 2375 | int bytes_returned = 0; |
133672ef | 2376 | int resp_buf_type = 0; |
08547b03 | 2377 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2378 | struct kvec iov[1]; |
08547b03 | 2379 | |
b6b38f70 | 2380 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2381 | |
08547b03 SF |
2382 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2383 | ||
2384 | if (rc) | |
2385 | return rc; | |
2386 | ||
2387 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2388 | ||
50c2f753 | 2389 | params = 6; |
08547b03 SF |
2390 | pSMB->MaxSetupCount = 0; |
2391 | pSMB->Reserved = 0; | |
2392 | pSMB->Flags = 0; | |
08547b03 SF |
2393 | pSMB->Reserved2 = 0; |
2394 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2395 | offset = param_offset + params; | |
2396 | ||
08547b03 SF |
2397 | count = sizeof(struct cifs_posix_lock); |
2398 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2399 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2400 | pSMB->SetupCount = 1; |
2401 | pSMB->Reserved3 = 0; | |
c5fd363d | 2402 | if (pLockData) |
08547b03 SF |
2403 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2404 | else | |
2405 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2406 | byte_count = 3 /* pad */ + params + count; | |
2407 | pSMB->DataCount = cpu_to_le16(count); | |
2408 | pSMB->ParameterCount = cpu_to_le16(params); | |
2409 | pSMB->TotalDataCount = pSMB->DataCount; | |
2410 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2411 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2412 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2413 | (((char *) &pSMB->hdr.Protocol) + offset); |
2414 | ||
2415 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2416 | if (waitFlag) { |
133672ef | 2417 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2418 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2419 | pSMB->Timeout = cpu_to_le32(-1); |
2420 | } else | |
2421 | pSMB->Timeout = 0; | |
2422 | ||
4f6bcec9 | 2423 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2424 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2425 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2426 | |
2427 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2428 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2429 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2430 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2431 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2432 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2433 | if (waitFlag) { |
2434 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2435 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2436 | } else { | |
133672ef | 2437 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2438 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2439 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2440 | &resp_buf_type, timeout); | |
2441 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2442 | not try to free it twice below on exit */ | |
2443 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2444 | } |
2445 | ||
08547b03 | 2446 | if (rc) { |
b6b38f70 | 2447 | cFYI(1, "Send error in Posix Lock = %d", rc); |
c5fd363d | 2448 | } else if (pLockData) { |
fc94cdb9 SF |
2449 | /* lock structure can be returned on get */ |
2450 | __u16 data_offset; | |
2451 | __u16 data_count; | |
2452 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2453 | ||
820a803f | 2454 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2455 | rc = -EIO; /* bad smb */ |
2456 | goto plk_err_exit; | |
2457 | } | |
fc94cdb9 SF |
2458 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2459 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2460 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2461 | rc = -EIO; |
2462 | goto plk_err_exit; | |
2463 | } | |
2464 | parm_data = (struct cifs_posix_lock *) | |
2465 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2466 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2467 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2468 | else { |
2469 | if (parm_data->lock_type == | |
2470 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2471 | pLockData->fl_type = F_RDLCK; | |
2472 | else if (parm_data->lock_type == | |
2473 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2474 | pLockData->fl_type = F_WRLCK; | |
2475 | ||
5443d130 SF |
2476 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2477 | pLockData->fl_end = pLockData->fl_start + | |
2478 | le64_to_cpu(parm_data->length) - 1; | |
2479 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2480 | } |
08547b03 | 2481 | } |
50c2f753 | 2482 | |
fc94cdb9 | 2483 | plk_err_exit: |
08547b03 SF |
2484 | if (pSMB) |
2485 | cifs_small_buf_release(pSMB); | |
2486 | ||
133672ef SF |
2487 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2488 | cifs_small_buf_release(iov[0].iov_base); | |
2489 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2490 | cifs_buf_release(iov[0].iov_base); | |
2491 | ||
08547b03 SF |
2492 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2493 | since file handle passed in no longer valid */ | |
2494 | ||
2495 | return rc; | |
2496 | } | |
2497 | ||
2498 | ||
1da177e4 | 2499 | int |
6d5786a3 | 2500 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2501 | { |
2502 | int rc = 0; | |
2503 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2504 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2505 | |
2506 | /* do not retry on dead session on close */ | |
2507 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2508 | if (rc == -EAGAIN) |
1da177e4 LT |
2509 | return 0; |
2510 | if (rc) | |
2511 | return rc; | |
2512 | ||
1da177e4 | 2513 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2514 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2515 | pSMB->ByteCount = 0; |
792af7b0 | 2516 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2517 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2518 | if (rc) { |
790fe579 | 2519 | if (rc != -EINTR) { |
1da177e4 | 2520 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2521 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2522 | } |
2523 | } | |
2524 | ||
1da177e4 | 2525 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2526 | if (rc == -EAGAIN) |
1da177e4 LT |
2527 | rc = 0; |
2528 | ||
2529 | return rc; | |
2530 | } | |
2531 | ||
b298f223 | 2532 | int |
6d5786a3 | 2533 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2534 | { |
2535 | int rc = 0; | |
2536 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2537 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2538 | |
2539 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2540 | if (rc) | |
2541 | return rc; | |
2542 | ||
2543 | pSMB->FileID = (__u16) smb_file_id; | |
2544 | pSMB->ByteCount = 0; | |
792af7b0 | 2545 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c58186 | 2546 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2547 | if (rc) |
b6b38f70 | 2548 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2549 | |
2550 | return rc; | |
2551 | } | |
2552 | ||
1da177e4 | 2553 | int |
6d5786a3 | 2554 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2555 | const char *fromName, const char *toName, |
737b758c | 2556 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2557 | { |
2558 | int rc = 0; | |
2559 | RENAME_REQ *pSMB = NULL; | |
2560 | RENAME_RSP *pSMBr = NULL; | |
2561 | int bytes_returned; | |
2562 | int name_len, name_len2; | |
2563 | __u16 count; | |
2564 | ||
b6b38f70 | 2565 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2566 | renameRetry: |
2567 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2568 | (void **) &pSMBr); | |
2569 | if (rc) | |
2570 | return rc; | |
2571 | ||
2572 | pSMB->BufferFormat = 0x04; | |
2573 | pSMB->SearchAttributes = | |
2574 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2575 | ATTR_DIRECTORY); | |
2576 | ||
2577 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2578 | name_len = | |
acbbb76a SF |
2579 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
2580 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2581 | name_len++; /* trailing null */ |
2582 | name_len *= 2; | |
2583 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2584 | /* protocol requires ASCII signature byte on Unicode string */ | |
2585 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2586 | name_len2 = | |
acbbb76a SF |
2587 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2588 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2589 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2590 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2591 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2592 | name_len = strnlen(fromName, PATH_MAX); |
2593 | name_len++; /* trailing null */ | |
2594 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2595 | name_len2 = strnlen(toName, PATH_MAX); | |
2596 | name_len2++; /* trailing null */ | |
2597 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2598 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2599 | name_len2++; /* trailing null */ | |
2600 | name_len2++; /* signature byte */ | |
2601 | } | |
2602 | ||
2603 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2604 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2605 | pSMB->ByteCount = cpu_to_le16(count); |
2606 | ||
2607 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2608 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2609 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2610 | if (rc) |
b6b38f70 | 2611 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2612 | |
1da177e4 LT |
2613 | cifs_buf_release(pSMB); |
2614 | ||
2615 | if (rc == -EAGAIN) | |
2616 | goto renameRetry; | |
2617 | ||
2618 | return rc; | |
2619 | } | |
2620 | ||
6d5786a3 | 2621 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2622 | int netfid, const char *target_name, |
50c2f753 | 2623 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2624 | { |
2625 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2626 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2627 | struct set_file_rename *rename_info; |
1da177e4 LT |
2628 | char *data_offset; |
2629 | char dummy_string[30]; | |
2630 | int rc = 0; | |
2631 | int bytes_returned = 0; | |
2632 | int len_of_str; | |
2633 | __u16 params, param_offset, offset, count, byte_count; | |
2634 | ||
b6b38f70 | 2635 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2636 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2637 | (void **) &pSMBr); | |
2638 | if (rc) | |
2639 | return rc; | |
2640 | ||
2641 | params = 6; | |
2642 | pSMB->MaxSetupCount = 0; | |
2643 | pSMB->Reserved = 0; | |
2644 | pSMB->Flags = 0; | |
2645 | pSMB->Timeout = 0; | |
2646 | pSMB->Reserved2 = 0; | |
2647 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2648 | offset = param_offset + params; | |
2649 | ||
2650 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2651 | rename_info = (struct set_file_rename *) data_offset; | |
2652 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2653 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2654 | pSMB->SetupCount = 1; |
2655 | pSMB->Reserved3 = 0; | |
2656 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2657 | byte_count = 3 /* pad */ + params; | |
2658 | pSMB->ParameterCount = cpu_to_le16(params); | |
2659 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2660 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2661 | pSMB->DataOffset = cpu_to_le16(offset); | |
2662 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2663 | rename_info->overwrite = cpu_to_le32(1); | |
2664 | rename_info->root_fid = 0; | |
2665 | /* unicode only call */ | |
790fe579 | 2666 | if (target_name == NULL) { |
50c2f753 | 2667 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2668 | len_of_str = |
2669 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2670 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2671 | } else { |
acbbb76a SF |
2672 | len_of_str = |
2673 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2674 | target_name, PATH_MAX, nls_codepage, |
2675 | remap); | |
1da177e4 LT |
2676 | } |
2677 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2678 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2679 | byte_count += count; |
2680 | pSMB->DataCount = cpu_to_le16(count); | |
2681 | pSMB->TotalDataCount = pSMB->DataCount; | |
2682 | pSMB->Fid = netfid; | |
2683 | pSMB->InformationLevel = | |
2684 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2685 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2686 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2687 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2688 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2689 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2690 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2691 | if (rc) |
b6b38f70 | 2692 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2693 | |
1da177e4 LT |
2694 | cifs_buf_release(pSMB); |
2695 | ||
2696 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2697 | since file handle passed in no longer valid */ | |
2698 | ||
2699 | return rc; | |
2700 | } | |
2701 | ||
2702 | int | |
6d5786a3 PS |
2703 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2704 | const char *fromName, const __u16 target_tid, const char *toName, | |
2705 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2706 | { |
2707 | int rc = 0; | |
2708 | COPY_REQ *pSMB = NULL; | |
2709 | COPY_RSP *pSMBr = NULL; | |
2710 | int bytes_returned; | |
2711 | int name_len, name_len2; | |
2712 | __u16 count; | |
2713 | ||
b6b38f70 | 2714 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2715 | copyRetry: |
2716 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2717 | (void **) &pSMBr); | |
2718 | if (rc) | |
2719 | return rc; | |
2720 | ||
2721 | pSMB->BufferFormat = 0x04; | |
2722 | pSMB->Tid2 = target_tid; | |
2723 | ||
2724 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2725 | ||
2726 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2727 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2728 | fromName, PATH_MAX, nls_codepage, | |
2729 | remap); | |
1da177e4 LT |
2730 | name_len++; /* trailing null */ |
2731 | name_len *= 2; | |
2732 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2733 | /* protocol requires ASCII signature byte on Unicode string */ | |
2734 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2735 | name_len2 = |
acbbb76a SF |
2736 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2737 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2738 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2739 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2740 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2741 | name_len = strnlen(fromName, PATH_MAX); |
2742 | name_len++; /* trailing null */ | |
2743 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2744 | name_len2 = strnlen(toName, PATH_MAX); | |
2745 | name_len2++; /* trailing null */ | |
2746 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2747 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2748 | name_len2++; /* trailing null */ | |
2749 | name_len2++; /* signature byte */ | |
2750 | } | |
2751 | ||
2752 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2753 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2754 | pSMB->ByteCount = cpu_to_le16(count); |
2755 | ||
2756 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2757 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2758 | if (rc) { | |
b6b38f70 JP |
2759 | cFYI(1, "Send error in copy = %d with %d files copied", |
2760 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2761 | } |
0d817bc0 | 2762 | cifs_buf_release(pSMB); |
1da177e4 LT |
2763 | |
2764 | if (rc == -EAGAIN) | |
2765 | goto copyRetry; | |
2766 | ||
2767 | return rc; | |
2768 | } | |
2769 | ||
2770 | int | |
6d5786a3 | 2771 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2772 | const char *fromName, const char *toName, |
2773 | const struct nls_table *nls_codepage) | |
2774 | { | |
2775 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2776 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2777 | char *data_offset; | |
2778 | int name_len; | |
2779 | int name_len_target; | |
2780 | int rc = 0; | |
2781 | int bytes_returned = 0; | |
2782 | __u16 params, param_offset, offset, byte_count; | |
2783 | ||
b6b38f70 | 2784 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2785 | createSymLinkRetry: |
2786 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2787 | (void **) &pSMBr); | |
2788 | if (rc) | |
2789 | return rc; | |
2790 | ||
2791 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2792 | name_len = | |
acbbb76a SF |
2793 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2794 | /* find define for this maxpathcomponent */ | |
2795 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2796 | name_len++; /* trailing null */ |
2797 | name_len *= 2; | |
2798 | ||
50c2f753 | 2799 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2800 | name_len = strnlen(fromName, PATH_MAX); |
2801 | name_len++; /* trailing null */ | |
2802 | strncpy(pSMB->FileName, fromName, name_len); | |
2803 | } | |
2804 | params = 6 + name_len; | |
2805 | pSMB->MaxSetupCount = 0; | |
2806 | pSMB->Reserved = 0; | |
2807 | pSMB->Flags = 0; | |
2808 | pSMB->Timeout = 0; | |
2809 | pSMB->Reserved2 = 0; | |
2810 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2811 | InformationLevel) - 4; |
1da177e4 LT |
2812 | offset = param_offset + params; |
2813 | ||
2814 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2815 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2816 | name_len_target = | |
acbbb76a SF |
2817 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2818 | /* find define for this maxpathcomponent */ | |
2819 | , nls_codepage); | |
1da177e4 LT |
2820 | name_len_target++; /* trailing null */ |
2821 | name_len_target *= 2; | |
50c2f753 | 2822 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2823 | name_len_target = strnlen(toName, PATH_MAX); |
2824 | name_len_target++; /* trailing null */ | |
2825 | strncpy(data_offset, toName, name_len_target); | |
2826 | } | |
2827 | ||
2828 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2829 | /* BB find exact max on data count below from sess */ | |
2830 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2831 | pSMB->SetupCount = 1; | |
2832 | pSMB->Reserved3 = 0; | |
2833 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2834 | byte_count = 3 /* pad */ + params + name_len_target; | |
2835 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2836 | pSMB->ParameterCount = cpu_to_le16(params); | |
2837 | pSMB->TotalDataCount = pSMB->DataCount; | |
2838 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2839 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2840 | pSMB->DataOffset = cpu_to_le16(offset); | |
2841 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2842 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2843 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2844 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2845 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2846 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2847 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2848 | if (rc) |
b6b38f70 | 2849 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2850 | |
0d817bc0 | 2851 | cifs_buf_release(pSMB); |
1da177e4 LT |
2852 | |
2853 | if (rc == -EAGAIN) | |
2854 | goto createSymLinkRetry; | |
2855 | ||
2856 | return rc; | |
2857 | } | |
2858 | ||
2859 | int | |
6d5786a3 | 2860 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2861 | const char *fromName, const char *toName, |
737b758c | 2862 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2863 | { |
2864 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2865 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2866 | char *data_offset; | |
2867 | int name_len; | |
2868 | int name_len_target; | |
2869 | int rc = 0; | |
2870 | int bytes_returned = 0; | |
2871 | __u16 params, param_offset, offset, byte_count; | |
2872 | ||
b6b38f70 | 2873 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2874 | createHardLinkRetry: |
2875 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2876 | (void **) &pSMBr); | |
2877 | if (rc) | |
2878 | return rc; | |
2879 | ||
2880 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2881 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2882 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2883 | name_len++; /* trailing null */ |
2884 | name_len *= 2; | |
2885 | ||
50c2f753 | 2886 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2887 | name_len = strnlen(toName, PATH_MAX); |
2888 | name_len++; /* trailing null */ | |
2889 | strncpy(pSMB->FileName, toName, name_len); | |
2890 | } | |
2891 | params = 6 + name_len; | |
2892 | pSMB->MaxSetupCount = 0; | |
2893 | pSMB->Reserved = 0; | |
2894 | pSMB->Flags = 0; | |
2895 | pSMB->Timeout = 0; | |
2896 | pSMB->Reserved2 = 0; | |
2897 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2898 | InformationLevel) - 4; |
1da177e4 LT |
2899 | offset = param_offset + params; |
2900 | ||
2901 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2902 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2903 | name_len_target = | |
acbbb76a SF |
2904 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2905 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2906 | name_len_target++; /* trailing null */ |
2907 | name_len_target *= 2; | |
50c2f753 | 2908 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2909 | name_len_target = strnlen(fromName, PATH_MAX); |
2910 | name_len_target++; /* trailing null */ | |
2911 | strncpy(data_offset, fromName, name_len_target); | |
2912 | } | |
2913 | ||
2914 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2915 | /* BB find exact max on data count below from sess*/ | |
2916 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2917 | pSMB->SetupCount = 1; | |
2918 | pSMB->Reserved3 = 0; | |
2919 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2920 | byte_count = 3 /* pad */ + params + name_len_target; | |
2921 | pSMB->ParameterCount = cpu_to_le16(params); | |
2922 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2923 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2924 | pSMB->TotalDataCount = pSMB->DataCount; | |
2925 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2926 | pSMB->DataOffset = cpu_to_le16(offset); | |
2927 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2928 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2929 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2930 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2931 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2932 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2933 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2934 | if (rc) |
b6b38f70 | 2935 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2936 | |
2937 | cifs_buf_release(pSMB); | |
2938 | if (rc == -EAGAIN) | |
2939 | goto createHardLinkRetry; | |
2940 | ||
2941 | return rc; | |
2942 | } | |
2943 | ||
2944 | int | |
6d5786a3 | 2945 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2946 | const char *fromName, const char *toName, |
737b758c | 2947 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2948 | { |
2949 | int rc = 0; | |
2950 | NT_RENAME_REQ *pSMB = NULL; | |
2951 | RENAME_RSP *pSMBr = NULL; | |
2952 | int bytes_returned; | |
2953 | int name_len, name_len2; | |
2954 | __u16 count; | |
2955 | ||
b6b38f70 | 2956 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2957 | winCreateHardLinkRetry: |
2958 | ||
2959 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2960 | (void **) &pSMBr); | |
2961 | if (rc) | |
2962 | return rc; | |
2963 | ||
2964 | pSMB->SearchAttributes = | |
2965 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2966 | ATTR_DIRECTORY); | |
2967 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2968 | pSMB->ClusterCount = 0; | |
2969 | ||
2970 | pSMB->BufferFormat = 0x04; | |
2971 | ||
2972 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2973 | name_len = | |
acbbb76a SF |
2974 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
2975 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2976 | name_len++; /* trailing null */ |
2977 | name_len *= 2; | |
fcc7c09d JL |
2978 | |
2979 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2980 | pSMB->OldFileName[name_len] = 0x04; | |
2981 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2982 | name_len2 = |
acbbb76a SF |
2983 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2984 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2985 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2986 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2987 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2988 | name_len = strnlen(fromName, PATH_MAX); |
2989 | name_len++; /* trailing null */ | |
2990 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2991 | name_len2 = strnlen(toName, PATH_MAX); | |
2992 | name_len2++; /* trailing null */ | |
2993 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2994 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2995 | name_len2++; /* trailing null */ | |
2996 | name_len2++; /* signature byte */ | |
2997 | } | |
2998 | ||
2999 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3000 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3001 | pSMB->ByteCount = cpu_to_le16(count); |
3002 | ||
3003 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3004 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3005 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 3006 | if (rc) |
b6b38f70 | 3007 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 3008 | |
1da177e4 LT |
3009 | cifs_buf_release(pSMB); |
3010 | if (rc == -EAGAIN) | |
3011 | goto winCreateHardLinkRetry; | |
3012 | ||
3013 | return rc; | |
3014 | } | |
3015 | ||
3016 | int | |
6d5786a3 | 3017 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 3018 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
3019 | const struct nls_table *nls_codepage) |
3020 | { | |
3021 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3022 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3023 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3024 | int rc = 0; | |
3025 | int bytes_returned; | |
3026 | int name_len; | |
3027 | __u16 params, byte_count; | |
460b9696 | 3028 | char *data_start; |
1da177e4 | 3029 | |
b6b38f70 | 3030 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
3031 | |
3032 | querySymLinkRetry: | |
3033 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3034 | (void **) &pSMBr); | |
3035 | if (rc) | |
3036 | return rc; | |
3037 | ||
3038 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3039 | name_len = | |
acbbb76a SF |
3040 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3041 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3042 | name_len++; /* trailing null */ |
3043 | name_len *= 2; | |
50c2f753 | 3044 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3045 | name_len = strnlen(searchName, PATH_MAX); |
3046 | name_len++; /* trailing null */ | |
3047 | strncpy(pSMB->FileName, searchName, name_len); | |
3048 | } | |
3049 | ||
3050 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3051 | pSMB->TotalDataCount = 0; | |
3052 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3053 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3054 | pSMB->MaxSetupCount = 0; |
3055 | pSMB->Reserved = 0; | |
3056 | pSMB->Flags = 0; | |
3057 | pSMB->Timeout = 0; | |
3058 | pSMB->Reserved2 = 0; | |
3059 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3060 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3061 | pSMB->DataCount = 0; |
3062 | pSMB->DataOffset = 0; | |
3063 | pSMB->SetupCount = 1; | |
3064 | pSMB->Reserved3 = 0; | |
3065 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3066 | byte_count = params + 1 /* pad */ ; | |
3067 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3068 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3069 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3070 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3071 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3072 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3073 | ||
3074 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3075 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3076 | if (rc) { | |
b6b38f70 | 3077 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
3078 | } else { |
3079 | /* decode response */ | |
3080 | ||
3081 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3082 | /* BB also check enough total bytes returned */ |
820a803f | 3083 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3084 | rc = -EIO; |
1da177e4 | 3085 | else { |
0e0d2cf3 | 3086 | bool is_unicode; |
460b9696 JL |
3087 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3088 | ||
3089 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3090 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3091 | |
0e0d2cf3 SF |
3092 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3093 | is_unicode = true; | |
3094 | else | |
3095 | is_unicode = false; | |
3096 | ||
737b758c | 3097 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3098 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3099 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3100 | if (!*symlinkinfo) |
460b9696 | 3101 | rc = -ENOMEM; |
1da177e4 LT |
3102 | } |
3103 | } | |
3104 | cifs_buf_release(pSMB); | |
3105 | if (rc == -EAGAIN) | |
3106 | goto querySymLinkRetry; | |
3107 | return rc; | |
3108 | } | |
3109 | ||
c52a9554 SF |
3110 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3111 | /* | |
3112 | * Recent Windows versions now create symlinks more frequently | |
3113 | * and they use the "reparse point" mechanism below. We can of course | |
3114 | * do symlinks nicely to Samba and other servers which support the | |
3115 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3116 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3117 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3118 | * In the interim this code has been moved to its own config option so | |
3119 | * it is not compiled in by default until callers fixed up and more tested. | |
3120 | */ | |
1da177e4 | 3121 | int |
6d5786a3 | 3122 | CIFSSMBQueryReparseLinkInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3123 | const unsigned char *searchName, |
50c2f753 | 3124 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3125 | const struct nls_table *nls_codepage) |
3126 | { | |
3127 | int rc = 0; | |
3128 | int bytes_returned; | |
50c2f753 SF |
3129 | struct smb_com_transaction_ioctl_req *pSMB; |
3130 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3131 | |
b6b38f70 | 3132 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
3133 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3134 | (void **) &pSMBr); | |
3135 | if (rc) | |
3136 | return rc; | |
3137 | ||
3138 | pSMB->TotalParameterCount = 0 ; | |
3139 | pSMB->TotalDataCount = 0; | |
3140 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3141 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3142 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3143 | pSMB->MaxSetupCount = 4; |
3144 | pSMB->Reserved = 0; | |
3145 | pSMB->ParameterOffset = 0; | |
3146 | pSMB->DataCount = 0; | |
3147 | pSMB->DataOffset = 0; | |
3148 | pSMB->SetupCount = 4; | |
3149 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3150 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3151 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3152 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3153 | pSMB->IsRootFlag = 0; | |
3154 | pSMB->Fid = fid; /* file handle always le */ | |
3155 | pSMB->ByteCount = 0; | |
3156 | ||
3157 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3158 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3159 | if (rc) { | |
b6b38f70 | 3160 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
3161 | } else { /* decode response */ |
3162 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3163 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3164 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3165 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3166 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3167 | goto qreparse_out; |
3168 | } | |
3169 | if (data_count && (data_count < 2048)) { | |
3170 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3171 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3172 | |
afe48c31 | 3173 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3174 | (struct reparse_data *) |
3175 | ((char *)&pSMBr->hdr.Protocol | |
3176 | + data_offset); | |
afe48c31 SF |
3177 | if ((char *)reparse_buf >= end_of_smb) { |
3178 | rc = -EIO; | |
3179 | goto qreparse_out; | |
3180 | } | |
3181 | if ((reparse_buf->LinkNamesBuf + | |
3182 | reparse_buf->TargetNameOffset + | |
3183 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 3184 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
3185 | rc = -EIO; |
3186 | goto qreparse_out; | |
3187 | } | |
50c2f753 | 3188 | |
afe48c31 SF |
3189 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3190 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3191 | (reparse_buf->LinkNamesBuf + |
3192 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3193 | buflen, |
3194 | reparse_buf->TargetNameLen, | |
3195 | nls_codepage, 0); | |
3196 | } else { /* ASCII names */ | |
3197 | strncpy(symlinkinfo, | |
3198 | reparse_buf->LinkNamesBuf + | |
3199 | reparse_buf->TargetNameOffset, | |
3200 | min_t(const int, buflen, | |
3201 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3202 | } |
afe48c31 SF |
3203 | } else { |
3204 | rc = -EIO; | |
b6b38f70 JP |
3205 | cFYI(1, "Invalid return data count on " |
3206 | "get reparse info ioctl"); | |
1da177e4 | 3207 | } |
afe48c31 SF |
3208 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3209 | does not go off the end of the buffer */ | |
b6b38f70 | 3210 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 3211 | } |
989c7e51 | 3212 | |
1da177e4 | 3213 | qreparse_out: |
4a6d87f1 | 3214 | cifs_buf_release(pSMB); |
1da177e4 LT |
3215 | |
3216 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3217 | since file handle passed in no longer valid */ | |
3218 | ||
3219 | return rc; | |
3220 | } | |
c52a9554 | 3221 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3222 | |
3223 | #ifdef CONFIG_CIFS_POSIX | |
3224 | ||
3225 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3226 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3227 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3228 | { |
3229 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3230 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3231 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3232 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 3233 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
3234 | |
3235 | return; | |
3236 | } | |
3237 | ||
3238 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3239 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3240 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3241 | { |
3242 | int size = 0; | |
3243 | int i; | |
3244 | __u16 count; | |
50c2f753 SF |
3245 | struct cifs_posix_ace *pACE; |
3246 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3247 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3248 | |
3249 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3250 | return -EOPNOTSUPP; | |
3251 | ||
790fe579 | 3252 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3253 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3254 | pACE = &cifs_acl->ace_array[0]; | |
3255 | size = sizeof(struct cifs_posix_acl); | |
3256 | size += sizeof(struct cifs_posix_ace) * count; | |
3257 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3258 | if (size_of_data_area < size) { |
b6b38f70 JP |
3259 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
3260 | size_of_data_area, size); | |
1da177e4 LT |
3261 | return -EINVAL; |
3262 | } | |
790fe579 | 3263 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3264 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3265 | size = sizeof(struct cifs_posix_acl); | |
3266 | size += sizeof(struct cifs_posix_ace) * count; | |
3267 | /* skip past access ACEs to get to default ACEs */ | |
3268 | pACE = &cifs_acl->ace_array[count]; | |
3269 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3270 | size += sizeof(struct cifs_posix_ace) * count; | |
3271 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3272 | if (size_of_data_area < size) |
1da177e4 LT |
3273 | return -EINVAL; |
3274 | } else { | |
3275 | /* illegal type */ | |
3276 | return -EINVAL; | |
3277 | } | |
3278 | ||
3279 | size = posix_acl_xattr_size(count); | |
790fe579 | 3280 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3281 | /* used to query ACL EA size */ |
790fe579 | 3282 | } else if (size > buflen) { |
1da177e4 LT |
3283 | return -ERANGE; |
3284 | } else /* buffer big enough */ { | |
ff7feac9 | 3285 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3286 | for (i = 0; i < count ; i++) { |
3287 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3288 | pACE++; | |
1da177e4 LT |
3289 | } |
3290 | } | |
3291 | return size; | |
3292 | } | |
3293 | ||
50c2f753 SF |
3294 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3295 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3296 | { |
3297 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3298 | ||
ff7feac9 SF |
3299 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3300 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3301 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3302 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3303 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3304 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3305 | } else |
ff7feac9 | 3306 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 3307 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
3308 | return rc; |
3309 | } | |
3310 | ||
3311 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3312 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3313 | const int buflen, const int acl_type) | |
1da177e4 LT |
3314 | { |
3315 | __u16 rc = 0; | |
50c2f753 SF |
3316 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3317 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3318 | int count; |
3319 | int i; | |
3320 | ||
790fe579 | 3321 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3322 | return 0; |
3323 | ||
3324 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 3325 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 3326 | "version of %d", |
b6b38f70 | 3327 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 3328 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3329 | cFYI(1, "unknown POSIX ACL version %d", |
3330 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3331 | return 0; |
3332 | } | |
3333 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3334 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3335 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3336 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3337 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3338 | else { |
b6b38f70 | 3339 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3340 | return 0; |
3341 | } | |
50c2f753 | 3342 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3343 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3344 | &local_acl->a_entries[i]); | |
790fe579 | 3345 | if (rc != 0) { |
1da177e4 LT |
3346 | /* ACE not converted */ |
3347 | break; | |
3348 | } | |
3349 | } | |
790fe579 | 3350 | if (rc == 0) { |
1da177e4 LT |
3351 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3352 | rc += sizeof(struct cifs_posix_acl); | |
3353 | /* BB add check to make sure ACL does not overflow SMB */ | |
3354 | } | |
3355 | return rc; | |
3356 | } | |
3357 | ||
3358 | int | |
6d5786a3 | 3359 | CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3360 | const unsigned char *searchName, |
3361 | char *acl_inf, const int buflen, const int acl_type, | |
3362 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3363 | { |
3364 | /* SMB_QUERY_POSIX_ACL */ | |
3365 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3366 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3367 | int rc = 0; | |
3368 | int bytes_returned; | |
3369 | int name_len; | |
3370 | __u16 params, byte_count; | |
50c2f753 | 3371 | |
b6b38f70 | 3372 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3373 | |
3374 | queryAclRetry: | |
3375 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3376 | (void **) &pSMBr); | |
3377 | if (rc) | |
3378 | return rc; | |
50c2f753 | 3379 | |
1da177e4 LT |
3380 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3381 | name_len = | |
acbbb76a SF |
3382 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3383 | searchName, PATH_MAX, nls_codepage, | |
3384 | remap); | |
1da177e4 LT |
3385 | name_len++; /* trailing null */ |
3386 | name_len *= 2; | |
3387 | pSMB->FileName[name_len] = 0; | |
3388 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3389 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3390 | name_len = strnlen(searchName, PATH_MAX); |
3391 | name_len++; /* trailing null */ | |
3392 | strncpy(pSMB->FileName, searchName, name_len); | |
3393 | } | |
3394 | ||
3395 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3396 | pSMB->TotalDataCount = 0; | |
3397 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3398 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3399 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3400 | pSMB->MaxSetupCount = 0; | |
3401 | pSMB->Reserved = 0; | |
3402 | pSMB->Flags = 0; | |
3403 | pSMB->Timeout = 0; | |
3404 | pSMB->Reserved2 = 0; | |
3405 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3406 | offsetof(struct smb_com_transaction2_qpi_req, |
3407 | InformationLevel) - 4); | |
1da177e4 LT |
3408 | pSMB->DataCount = 0; |
3409 | pSMB->DataOffset = 0; | |
3410 | pSMB->SetupCount = 1; | |
3411 | pSMB->Reserved3 = 0; | |
3412 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3413 | byte_count = params + 1 /* pad */ ; | |
3414 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3415 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3416 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3417 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3418 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3419 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3420 | ||
3421 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3422 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 3423 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4 | 3424 | if (rc) { |
b6b38f70 | 3425 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3426 | } else { |
3427 | /* decode response */ | |
50c2f753 | 3428 | |
1da177e4 | 3429 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3430 | /* BB also check enough total bytes returned */ |
820a803f | 3431 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3432 | rc = -EIO; /* bad smb */ |
3433 | else { | |
3434 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3435 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3436 | rc = cifs_copy_posix_acl(acl_inf, | |
3437 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3438 | buflen, acl_type, count); |
1da177e4 LT |
3439 | } |
3440 | } | |
3441 | cifs_buf_release(pSMB); | |
3442 | if (rc == -EAGAIN) | |
3443 | goto queryAclRetry; | |
3444 | return rc; | |
3445 | } | |
3446 | ||
3447 | int | |
6d5786a3 | 3448 | CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3449 | const unsigned char *fileName, |
3450 | const char *local_acl, const int buflen, | |
3451 | const int acl_type, | |
3452 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3453 | { |
3454 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3455 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3456 | char *parm_data; | |
3457 | int name_len; | |
3458 | int rc = 0; | |
3459 | int bytes_returned = 0; | |
3460 | __u16 params, byte_count, data_count, param_offset, offset; | |
3461 | ||
b6b38f70 | 3462 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3463 | setAclRetry: |
3464 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3465 | (void **) &pSMBr); |
1da177e4 LT |
3466 | if (rc) |
3467 | return rc; | |
3468 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3469 | name_len = | |
acbbb76a SF |
3470 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3471 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3472 | name_len++; /* trailing null */ |
3473 | name_len *= 2; | |
50c2f753 | 3474 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3475 | name_len = strnlen(fileName, PATH_MAX); |
3476 | name_len++; /* trailing null */ | |
3477 | strncpy(pSMB->FileName, fileName, name_len); | |
3478 | } | |
3479 | params = 6 + name_len; | |
3480 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3481 | /* BB find max SMB size from sess */ |
3482 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3483 | pSMB->MaxSetupCount = 0; |
3484 | pSMB->Reserved = 0; | |
3485 | pSMB->Flags = 0; | |
3486 | pSMB->Timeout = 0; | |
3487 | pSMB->Reserved2 = 0; | |
3488 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3489 | InformationLevel) - 4; |
1da177e4 LT |
3490 | offset = param_offset + params; |
3491 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3492 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3493 | ||
3494 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3495 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3496 | |
790fe579 | 3497 | if (data_count == 0) { |
1da177e4 LT |
3498 | rc = -EOPNOTSUPP; |
3499 | goto setACLerrorExit; | |
3500 | } | |
3501 | pSMB->DataOffset = cpu_to_le16(offset); | |
3502 | pSMB->SetupCount = 1; | |
3503 | pSMB->Reserved3 = 0; | |
3504 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3505 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3506 | byte_count = 3 /* pad */ + params + data_count; | |
3507 | pSMB->DataCount = cpu_to_le16(data_count); | |
3508 | pSMB->TotalDataCount = pSMB->DataCount; | |
3509 | pSMB->ParameterCount = cpu_to_le16(params); | |
3510 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3511 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3512 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3513 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3514 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3515 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3516 | if (rc) |
b6b38f70 | 3517 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3518 | |
3519 | setACLerrorExit: | |
3520 | cifs_buf_release(pSMB); | |
3521 | if (rc == -EAGAIN) | |
3522 | goto setAclRetry; | |
3523 | return rc; | |
3524 | } | |
3525 | ||
f654bac2 SF |
3526 | /* BB fix tabs in this function FIXME BB */ |
3527 | int | |
6d5786a3 | 3528 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3529 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3530 | { |
50c2f753 SF |
3531 | int rc = 0; |
3532 | struct smb_t2_qfi_req *pSMB = NULL; | |
3533 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3534 | int bytes_returned; | |
3535 | __u16 params, byte_count; | |
f654bac2 | 3536 | |
b6b38f70 | 3537 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3538 | if (tcon == NULL) |
3539 | return -ENODEV; | |
f654bac2 SF |
3540 | |
3541 | GetExtAttrRetry: | |
790fe579 SF |
3542 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3543 | (void **) &pSMBr); | |
3544 | if (rc) | |
3545 | return rc; | |
f654bac2 | 3546 | |
ad7a2926 | 3547 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3548 | pSMB->t2.TotalDataCount = 0; |
3549 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3550 | /* BB find exact max data count below from sess structure BB */ | |
3551 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3552 | pSMB->t2.MaxSetupCount = 0; | |
3553 | pSMB->t2.Reserved = 0; | |
3554 | pSMB->t2.Flags = 0; | |
3555 | pSMB->t2.Timeout = 0; | |
3556 | pSMB->t2.Reserved2 = 0; | |
3557 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3558 | Fid) - 4); | |
3559 | pSMB->t2.DataCount = 0; | |
3560 | pSMB->t2.DataOffset = 0; | |
3561 | pSMB->t2.SetupCount = 1; | |
3562 | pSMB->t2.Reserved3 = 0; | |
3563 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3564 | byte_count = params + 1 /* pad */ ; | |
3565 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3566 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3567 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3568 | pSMB->Pad = 0; | |
f654bac2 | 3569 | pSMB->Fid = netfid; |
be8e3b00 | 3570 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3571 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3572 | ||
3573 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3574 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3575 | if (rc) { | |
b6b38f70 | 3576 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3577 | } else { |
3578 | /* decode response */ | |
3579 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3580 | /* BB also check enough total bytes returned */ |
820a803f | 3581 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3582 | /* If rc should we check for EOPNOSUPP and |
3583 | disable the srvino flag? or in caller? */ | |
3584 | rc = -EIO; /* bad smb */ | |
3585 | else { | |
3586 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3587 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3588 | struct file_chattr_info *pfinfo; | |
3589 | /* BB Do we need a cast or hash here ? */ | |
3590 | if (count != 16) { | |
b6b38f70 | 3591 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3592 | rc = -EIO; |
3593 | goto GetExtAttrOut; | |
3594 | } | |
3595 | pfinfo = (struct file_chattr_info *) | |
3596 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3597 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3598 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3599 | } |
3600 | } | |
f654bac2 | 3601 | GetExtAttrOut: |
790fe579 SF |
3602 | cifs_buf_release(pSMB); |
3603 | if (rc == -EAGAIN) | |
3604 | goto GetExtAttrRetry; | |
3605 | return rc; | |
f654bac2 SF |
3606 | } |
3607 | ||
f654bac2 | 3608 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3609 | |
79df1bae JL |
3610 | #ifdef CONFIG_CIFS_ACL |
3611 | /* | |
3612 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3613 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3614 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3615 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3616 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3617 | * by caller | |
3618 | */ | |
3619 | static int | |
3620 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3621 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3622 | void **ret_buf) |
3623 | { | |
3624 | int rc; | |
3625 | __u32 temp_offset; | |
3626 | struct smb_com_ntransact_req *pSMB; | |
3627 | ||
3628 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3629 | (void **)&pSMB); | |
3630 | if (rc) | |
3631 | return rc; | |
3632 | *ret_buf = (void *)pSMB; | |
3633 | pSMB->Reserved = 0; | |
3634 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3635 | pSMB->TotalDataCount = 0; | |
c974befa | 3636 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3637 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3638 | pSMB->DataCount = pSMB->TotalDataCount; | |
3639 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3640 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3641 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3642 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3643 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3644 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3645 | return 0; | |
3646 | } | |
3647 | ||
3648 | static int | |
3649 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3650 | __u32 *pparmlen, __u32 *pdatalen) | |
3651 | { | |
3652 | char *end_of_smb; | |
3653 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3654 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3655 | u16 bcc; |
79df1bae JL |
3656 | |
3657 | *pdatalen = 0; | |
3658 | *pparmlen = 0; | |
3659 | ||
3660 | if (buf == NULL) | |
3661 | return -EINVAL; | |
3662 | ||
3663 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3664 | ||
820a803f JL |
3665 | bcc = get_bcc(&pSMBr->hdr); |
3666 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3667 | (char *)&pSMBr->ByteCount; |
3668 | ||
3669 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3670 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3671 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3672 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3673 | ||
3674 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3675 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3676 | ||
3677 | /* should we also check that parm and data areas do not overlap? */ | |
3678 | if (*ppparm > end_of_smb) { | |
3679 | cFYI(1, "parms start after end of smb"); | |
3680 | return -EINVAL; | |
3681 | } else if (parm_count + *ppparm > end_of_smb) { | |
3682 | cFYI(1, "parm end after end of smb"); | |
3683 | return -EINVAL; | |
3684 | } else if (*ppdata > end_of_smb) { | |
3685 | cFYI(1, "data starts after end of smb"); | |
3686 | return -EINVAL; | |
3687 | } else if (data_count + *ppdata > end_of_smb) { | |
3688 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3689 | *ppdata, data_count, (data_count + *ppdata), | |
3690 | end_of_smb, pSMBr); | |
3691 | return -EINVAL; | |
820a803f | 3692 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3693 | cFYI(1, "parm count and data count larger than SMB"); |
3694 | return -EINVAL; | |
3695 | } | |
3696 | *pdatalen = data_count; | |
3697 | *pparmlen = parm_count; | |
3698 | return 0; | |
3699 | } | |
3700 | ||
0a4b92c0 SF |
3701 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3702 | int | |
6d5786a3 | 3703 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3704 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3705 | { |
3706 | int rc = 0; | |
3707 | int buf_type = 0; | |
ad7a2926 | 3708 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3709 | struct kvec iov[1]; |
3710 | ||
b6b38f70 | 3711 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3712 | |
630f3f0c SF |
3713 | *pbuflen = 0; |
3714 | *acl_inf = NULL; | |
3715 | ||
b9c7a2bb | 3716 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3717 | 8 /* parm len */, tcon, (void **) &pSMB); |
3718 | if (rc) | |
3719 | return rc; | |
3720 | ||
3721 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3722 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3723 | pSMB->MaxSetupCount = 0; | |
3724 | pSMB->Fid = fid; /* file handle always le */ | |
3725 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3726 | CIFS_ACL_DACL); | |
3727 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3728 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3729 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3730 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3731 | |
a761ac57 | 3732 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3733 | 0); |
44c58186 | 3734 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3735 | if (rc) { |
b6b38f70 | 3736 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3737 | } else { /* decode response */ |
ad7a2926 | 3738 | __le32 *parm; |
630f3f0c SF |
3739 | __u32 parm_len; |
3740 | __u32 acl_len; | |
50c2f753 | 3741 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3742 | char *pdata; |
0a4b92c0 SF |
3743 | |
3744 | /* validate_nttransact */ | |
50c2f753 | 3745 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3746 | &pdata, &parm_len, pbuflen); |
790fe579 | 3747 | if (rc) |
0a4b92c0 SF |
3748 | goto qsec_out; |
3749 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3750 | ||
b6b38f70 | 3751 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3752 | |
3753 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3754 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3755 | *pbuflen = 0; |
0a4b92c0 SF |
3756 | goto qsec_out; |
3757 | } | |
3758 | ||
3759 | /* BB check that data area is minimum length and as big as acl_len */ | |
3760 | ||
af6f4612 | 3761 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3762 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3763 | cERROR(1, "acl length %d does not match %d", |
3764 | acl_len, *pbuflen); | |
630f3f0c SF |
3765 | if (*pbuflen > acl_len) |
3766 | *pbuflen = acl_len; | |
3767 | } | |
0a4b92c0 | 3768 | |
630f3f0c SF |
3769 | /* check if buffer is big enough for the acl |
3770 | header followed by the smallest SID */ | |
3771 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3772 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3773 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3774 | rc = -EINVAL; |
3775 | *pbuflen = 0; | |
3776 | } else { | |
3777 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3778 | if (*acl_inf == NULL) { | |
3779 | *pbuflen = 0; | |
3780 | rc = -ENOMEM; | |
3781 | } | |
3782 | memcpy(*acl_inf, pdata, *pbuflen); | |
3783 | } | |
0a4b92c0 SF |
3784 | } |
3785 | qsec_out: | |
790fe579 | 3786 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3787 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3788 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3789 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3790 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3791 | return rc; |
3792 | } | |
97837582 SF |
3793 | |
3794 | int | |
6d5786a3 | 3795 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3796 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3797 | { |
3798 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3799 | int rc = 0; | |
3800 | int bytes_returned = 0; | |
3801 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3802 | void *pSMBr; |
97837582 SF |
3803 | |
3804 | setCifsAclRetry: | |
b2a3ad9c | 3805 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3806 | if (rc) |
b2a3ad9c | 3807 | return rc; |
97837582 SF |
3808 | |
3809 | pSMB->MaxSetupCount = 0; | |
3810 | pSMB->Reserved = 0; | |
3811 | ||
3812 | param_count = 8; | |
3813 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3814 | data_count = acllen; | |
3815 | data_offset = param_offset + param_count; | |
3816 | byte_count = 3 /* pad */ + param_count; | |
3817 | ||
3818 | pSMB->DataCount = cpu_to_le32(data_count); | |
3819 | pSMB->TotalDataCount = pSMB->DataCount; | |
3820 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3821 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3822 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3823 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3824 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3825 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3826 | pSMB->SetupCount = 0; | |
3827 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3828 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3829 | ||
3830 | pSMB->Fid = fid; /* file handle always le */ | |
3831 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3832 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3833 | |
3834 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3835 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3836 | data_offset, pntsd, acllen); | |
be8e3b00 | 3837 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3838 | } else |
be8e3b00 | 3839 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3840 | |
3841 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3842 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3843 | ||
b6b38f70 | 3844 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3845 | if (rc) |
b6b38f70 | 3846 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3847 | cifs_buf_release(pSMB); |
3848 | ||
3849 | if (rc == -EAGAIN) | |
3850 | goto setCifsAclRetry; | |
3851 | ||
3852 | return (rc); | |
3853 | } | |
3854 | ||
79df1bae | 3855 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3856 | |
6b8edfe0 SF |
3857 | /* Legacy Query Path Information call for lookup to old servers such |
3858 | as Win9x/WinME */ | |
68889f26 PS |
3859 | int |
3860 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3861 | const char *search_name, FILE_ALL_INFO *data, | |
3862 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3863 | { |
ad7a2926 SF |
3864 | QUERY_INFORMATION_REQ *pSMB; |
3865 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3866 | int rc = 0; |
3867 | int bytes_returned; | |
3868 | int name_len; | |
3869 | ||
68889f26 | 3870 | cFYI(1, "In SMBQPath path %s", search_name); |
6b8edfe0 SF |
3871 | QInfRetry: |
3872 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3873 | (void **) &pSMBr); |
6b8edfe0 SF |
3874 | if (rc) |
3875 | return rc; | |
3876 | ||
3877 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3878 | name_len = | |
acbbb76a | 3879 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3880 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3881 | remap); |
6b8edfe0 SF |
3882 | name_len++; /* trailing null */ |
3883 | name_len *= 2; | |
50c2f753 | 3884 | } else { |
68889f26 | 3885 | name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0 | 3886 | name_len++; /* trailing null */ |
68889f26 | 3887 | strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0 SF |
3888 | } |
3889 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3890 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3891 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3892 | pSMB->ByteCount = cpu_to_le16(name_len); |
3893 | ||
3894 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3895 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3896 | if (rc) { |
b6b38f70 | 3897 | cFYI(1, "Send error in QueryInfo = %d", rc); |
68889f26 | 3898 | } else if (data) { |
1bd5bbcb SF |
3899 | struct timespec ts; |
3900 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3901 | |
3902 | /* decode response */ | |
1bd5bbcb | 3903 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3904 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3905 | ts.tv_nsec = 0; |
3906 | ts.tv_sec = time; | |
3907 | /* decode time fields */ | |
68889f26 PS |
3908 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3909 | data->LastWriteTime = data->ChangeTime; | |
3910 | data->LastAccessTime = 0; | |
3911 | data->AllocationSize = | |
70ca734a | 3912 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3913 | data->EndOfFile = data->AllocationSize; |
3914 | data->Attributes = | |
70ca734a | 3915 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3916 | } else |
3917 | rc = -EIO; /* bad buffer passed in */ | |
3918 | ||
3919 | cifs_buf_release(pSMB); | |
3920 | ||
3921 | if (rc == -EAGAIN) | |
3922 | goto QInfRetry; | |
3923 | ||
3924 | return rc; | |
3925 | } | |
3926 | ||
bcd5357f | 3927 | int |
6d5786a3 | 3928 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3929 | u16 netfid, FILE_ALL_INFO *pFindData) |
3930 | { | |
3931 | struct smb_t2_qfi_req *pSMB = NULL; | |
3932 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3933 | int rc = 0; | |
3934 | int bytes_returned; | |
3935 | __u16 params, byte_count; | |
3936 | ||
3937 | QFileInfoRetry: | |
3938 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3939 | (void **) &pSMBr); | |
3940 | if (rc) | |
3941 | return rc; | |
3942 | ||
3943 | params = 2 /* level */ + 2 /* fid */; | |
3944 | pSMB->t2.TotalDataCount = 0; | |
3945 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3946 | /* BB find exact max data count below from sess structure BB */ | |
3947 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3948 | pSMB->t2.MaxSetupCount = 0; | |
3949 | pSMB->t2.Reserved = 0; | |
3950 | pSMB->t2.Flags = 0; | |
3951 | pSMB->t2.Timeout = 0; | |
3952 | pSMB->t2.Reserved2 = 0; | |
3953 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3954 | Fid) - 4); | |
3955 | pSMB->t2.DataCount = 0; | |
3956 | pSMB->t2.DataOffset = 0; | |
3957 | pSMB->t2.SetupCount = 1; | |
3958 | pSMB->t2.Reserved3 = 0; | |
3959 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3960 | byte_count = params + 1 /* pad */ ; | |
3961 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3962 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3963 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3964 | pSMB->Pad = 0; | |
3965 | pSMB->Fid = netfid; | |
be8e3b00 | 3966 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3967 | |
bcd5357f JL |
3968 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3969 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3970 | if (rc) { | |
f19159dc | 3971 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3972 | } else { /* decode response */ |
3973 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3974 | |
bcd5357f JL |
3975 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3976 | rc = -EIO; | |
820a803f | 3977 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3978 | rc = -EIO; /* bad smb */ |
3979 | else if (pFindData) { | |
3980 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3981 | memcpy((char *) pFindData, | |
3982 | (char *) &pSMBr->hdr.Protocol + | |
3983 | data_offset, sizeof(FILE_ALL_INFO)); | |
3984 | } else | |
3985 | rc = -ENOMEM; | |
3986 | } | |
3987 | cifs_buf_release(pSMB); | |
3988 | if (rc == -EAGAIN) | |
3989 | goto QFileInfoRetry; | |
6b8edfe0 | 3990 | |
bcd5357f JL |
3991 | return rc; |
3992 | } | |
6b8edfe0 | 3993 | |
1da177e4 | 3994 | int |
6d5786a3 | 3995 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 3996 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 3997 | int legacy /* old style infolevel */, |
737b758c | 3998 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 3999 | { |
68889f26 | 4000 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
4001 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
4002 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4003 | int rc = 0; | |
4004 | int bytes_returned; | |
4005 | int name_len; | |
4006 | __u16 params, byte_count; | |
4007 | ||
68889f26 | 4008 | /* cFYI(1, "In QPathInfo path %s", search_name); */ |
1da177e4 LT |
4009 | QPathInfoRetry: |
4010 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4011 | (void **) &pSMBr); | |
4012 | if (rc) | |
4013 | return rc; | |
4014 | ||
4015 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4016 | name_len = | |
68889f26 | 4017 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 4018 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4019 | name_len++; /* trailing null */ |
4020 | name_len *= 2; | |
50c2f753 | 4021 | } else { /* BB improve the check for buffer overruns BB */ |
68889f26 | 4022 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4023 | name_len++; /* trailing null */ |
68889f26 | 4024 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4025 | } |
4026 | ||
50c2f753 | 4027 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4028 | pSMB->TotalDataCount = 0; |
4029 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4030 | /* BB find exact max SMB PDU from sess structure BB */ |
4031 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4032 | pSMB->MaxSetupCount = 0; |
4033 | pSMB->Reserved = 0; | |
4034 | pSMB->Flags = 0; | |
4035 | pSMB->Timeout = 0; | |
4036 | pSMB->Reserved2 = 0; | |
4037 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4038 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4039 | pSMB->DataCount = 0; |
4040 | pSMB->DataOffset = 0; | |
4041 | pSMB->SetupCount = 1; | |
4042 | pSMB->Reserved3 = 0; | |
4043 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4044 | byte_count = params + 1 /* pad */ ; | |
4045 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4046 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4047 | if (legacy) |
acf1a1b1 SF |
4048 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4049 | else | |
4050 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4051 | pSMB->Reserved4 = 0; |
be8e3b00 | 4052 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4053 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4054 | ||
4055 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4056 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4057 | if (rc) { | |
b6b38f70 | 4058 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4059 | } else { /* decode response */ |
4060 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4061 | ||
acf1a1b1 SF |
4062 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4063 | rc = -EIO; | |
820a803f | 4064 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4065 | rc = -EIO; /* bad smb */ |
820a803f | 4066 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4067 | rc = -EIO; /* 24 or 26 expected but we do not read |
4068 | last field */ | |
68889f26 | 4069 | else if (data) { |
acf1a1b1 | 4070 | int size; |
1da177e4 | 4071 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 4072 | |
68889f26 PS |
4073 | /* |
4074 | * On legacy responses we do not read the last field, | |
4075 | * EAsize, fortunately since it varies by subdialect and | |
4076 | * also note it differs on Set vs Get, ie two bytes or 4 | |
4077 | * bytes depending but we don't care here. | |
4078 | */ | |
ad7a2926 | 4079 | if (legacy) |
acf1a1b1 SF |
4080 | size = sizeof(FILE_INFO_STANDARD); |
4081 | else | |
4082 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 4083 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 4084 | data_offset, size); |
1da177e4 LT |
4085 | } else |
4086 | rc = -ENOMEM; | |
4087 | } | |
4088 | cifs_buf_release(pSMB); | |
4089 | if (rc == -EAGAIN) | |
4090 | goto QPathInfoRetry; | |
4091 | ||
4092 | return rc; | |
4093 | } | |
4094 | ||
c8634fd3 | 4095 | int |
6d5786a3 | 4096 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4097 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4098 | { | |
4099 | struct smb_t2_qfi_req *pSMB = NULL; | |
4100 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4101 | int rc = 0; | |
4102 | int bytes_returned; | |
4103 | __u16 params, byte_count; | |
4104 | ||
4105 | UnixQFileInfoRetry: | |
4106 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4107 | (void **) &pSMBr); | |
4108 | if (rc) | |
4109 | return rc; | |
4110 | ||
4111 | params = 2 /* level */ + 2 /* fid */; | |
4112 | pSMB->t2.TotalDataCount = 0; | |
4113 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4114 | /* BB find exact max data count below from sess structure BB */ | |
4115 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4116 | pSMB->t2.MaxSetupCount = 0; | |
4117 | pSMB->t2.Reserved = 0; | |
4118 | pSMB->t2.Flags = 0; | |
4119 | pSMB->t2.Timeout = 0; | |
4120 | pSMB->t2.Reserved2 = 0; | |
4121 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4122 | Fid) - 4); | |
4123 | pSMB->t2.DataCount = 0; | |
4124 | pSMB->t2.DataOffset = 0; | |
4125 | pSMB->t2.SetupCount = 1; | |
4126 | pSMB->t2.Reserved3 = 0; | |
4127 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4128 | byte_count = params + 1 /* pad */ ; | |
4129 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4130 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4131 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4132 | pSMB->Pad = 0; | |
4133 | pSMB->Fid = netfid; | |
be8e3b00 | 4134 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4135 | |
4136 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4137 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4138 | if (rc) { | |
f19159dc | 4139 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
4140 | } else { /* decode response */ |
4141 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4142 | ||
820a803f | 4143 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
ac3aa2f8 | 4144 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response. " |
c8634fd3 | 4145 | "Unix Extensions can be disabled on mount " |
f19159dc | 4146 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
4147 | rc = -EIO; /* bad smb */ |
4148 | } else { | |
4149 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4150 | memcpy((char *) pFindData, | |
4151 | (char *) &pSMBr->hdr.Protocol + | |
4152 | data_offset, | |
4153 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4154 | } | |
4155 | } | |
4156 | ||
4157 | cifs_buf_release(pSMB); | |
4158 | if (rc == -EAGAIN) | |
4159 | goto UnixQFileInfoRetry; | |
4160 | ||
4161 | return rc; | |
4162 | } | |
4163 | ||
1da177e4 | 4164 | int |
6d5786a3 | 4165 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 4166 | const unsigned char *searchName, |
582d21e5 | 4167 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4168 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4169 | { |
4170 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4171 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4172 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4173 | int rc = 0; | |
4174 | int bytes_returned = 0; | |
4175 | int name_len; | |
4176 | __u16 params, byte_count; | |
4177 | ||
b6b38f70 | 4178 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
4179 | UnixQPathInfoRetry: |
4180 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4181 | (void **) &pSMBr); | |
4182 | if (rc) | |
4183 | return rc; | |
4184 | ||
4185 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4186 | name_len = | |
acbbb76a SF |
4187 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4188 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4189 | name_len++; /* trailing null */ |
4190 | name_len *= 2; | |
50c2f753 | 4191 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4192 | name_len = strnlen(searchName, PATH_MAX); |
4193 | name_len++; /* trailing null */ | |
4194 | strncpy(pSMB->FileName, searchName, name_len); | |
4195 | } | |
4196 | ||
50c2f753 | 4197 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4198 | pSMB->TotalDataCount = 0; |
4199 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4200 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4201 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4202 | pSMB->MaxSetupCount = 0; |
4203 | pSMB->Reserved = 0; | |
4204 | pSMB->Flags = 0; | |
4205 | pSMB->Timeout = 0; | |
4206 | pSMB->Reserved2 = 0; | |
4207 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4208 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4209 | pSMB->DataCount = 0; |
4210 | pSMB->DataOffset = 0; | |
4211 | pSMB->SetupCount = 1; | |
4212 | pSMB->Reserved3 = 0; | |
4213 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4214 | byte_count = params + 1 /* pad */ ; | |
4215 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4216 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4217 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4218 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4219 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4220 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4221 | ||
4222 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4223 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4224 | if (rc) { | |
b6b38f70 | 4225 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4226 | } else { /* decode response */ |
4227 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4228 | ||
820a803f | 4229 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
ac3aa2f8 | 4230 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response. " |
1e71f25d | 4231 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 4232 | "by specifying the nosfu mount option."); |
1da177e4 LT |
4233 | rc = -EIO; /* bad smb */ |
4234 | } else { | |
4235 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4236 | memcpy((char *) pFindData, | |
4237 | (char *) &pSMBr->hdr.Protocol + | |
4238 | data_offset, | |
630f3f0c | 4239 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4240 | } |
4241 | } | |
4242 | cifs_buf_release(pSMB); | |
4243 | if (rc == -EAGAIN) | |
4244 | goto UnixQPathInfoRetry; | |
4245 | ||
4246 | return rc; | |
4247 | } | |
4248 | ||
1da177e4 LT |
4249 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4250 | int | |
6d5786a3 | 4251 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4252 | const char *searchName, |
1da177e4 | 4253 | const struct nls_table *nls_codepage, |
2608bee7 | 4254 | __u16 *pnetfid, __u16 search_flags, |
50c2f753 | 4255 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) |
1da177e4 LT |
4256 | { |
4257 | /* level 257 SMB_ */ | |
4258 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4259 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4260 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4261 | int rc = 0; |
4262 | int bytes_returned = 0; | |
4263 | int name_len; | |
4264 | __u16 params, byte_count; | |
4265 | ||
b6b38f70 | 4266 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
4267 | |
4268 | findFirstRetry: | |
4269 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4270 | (void **) &pSMBr); | |
4271 | if (rc) | |
4272 | return rc; | |
4273 | ||
4274 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4275 | name_len = | |
acbbb76a SF |
4276 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4277 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4278 | /* We can not add the asterik earlier in case |
4279 | it got remapped to 0xF03A as if it were part of the | |
4280 | directory name instead of a wildcard */ | |
1da177e4 | 4281 | name_len *= 2; |
ac67055e | 4282 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
4283 | pSMB->FileName[name_len+1] = 0; |
4284 | pSMB->FileName[name_len+2] = '*'; | |
4285 | pSMB->FileName[name_len+3] = 0; | |
4286 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
4287 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
4288 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 4289 | name_len += 2; |
1da177e4 LT |
4290 | } else { /* BB add check for overrun of SMB buf BB */ |
4291 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4292 | /* BB fix here and in unicode clause above ie |
790fe579 | 4293 | if (name_len > buffersize-header) |
1da177e4 LT |
4294 | free buffer exit; BB */ |
4295 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 4296 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
4297 | pSMB->FileName[name_len+1] = '*'; |
4298 | pSMB->FileName[name_len+2] = 0; | |
4299 | name_len += 3; | |
1da177e4 LT |
4300 | } |
4301 | ||
4302 | params = 12 + name_len /* includes null */ ; | |
4303 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4304 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4305 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4306 | pSMB->MaxSetupCount = 0; |
4307 | pSMB->Reserved = 0; | |
4308 | pSMB->Flags = 0; | |
4309 | pSMB->Timeout = 0; | |
4310 | pSMB->Reserved2 = 0; | |
4311 | byte_count = params + 1 /* pad */ ; | |
4312 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4313 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4314 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4315 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4316 | - 4); | |
1da177e4 LT |
4317 | pSMB->DataCount = 0; |
4318 | pSMB->DataOffset = 0; | |
4319 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4320 | pSMB->Reserved3 = 0; | |
4321 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4322 | pSMB->SearchAttributes = | |
4323 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4324 | ATTR_DIRECTORY); | |
50c2f753 | 4325 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4326 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4327 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4328 | ||
4329 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4330 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4331 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4332 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4333 | ||
4334 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4335 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4336 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4337 | |
88274815 SF |
4338 | if (rc) {/* BB add logic to retry regular search if Unix search |
4339 | rejected unexpectedly by server */ | |
1da177e4 | 4340 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4341 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4342 | |
88274815 | 4343 | cifs_buf_release(pSMB); |
1da177e4 LT |
4344 | |
4345 | /* BB eventually could optimize out free and realloc of buf */ | |
4346 | /* for this case */ | |
4347 | if (rc == -EAGAIN) | |
4348 | goto findFirstRetry; | |
4349 | } else { /* decode response */ | |
4350 | /* BB remember to free buffer if error BB */ | |
4351 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4352 | if (rc == 0) { |
b77d753c SF |
4353 | unsigned int lnoff; |
4354 | ||
1da177e4 | 4355 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4356 | psrch_inf->unicode = true; |
1da177e4 | 4357 | else |
4b18f2a9 | 4358 | psrch_inf->unicode = false; |
1da177e4 LT |
4359 | |
4360 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4361 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4362 | psrch_inf->srch_entries_start = |
4363 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4364 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4365 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4366 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4367 | ||
790fe579 | 4368 | if (parms->EndofSearch) |
4b18f2a9 | 4369 | psrch_inf->endOfSearch = true; |
1da177e4 | 4370 | else |
4b18f2a9 | 4371 | psrch_inf->endOfSearch = false; |
1da177e4 | 4372 | |
50c2f753 SF |
4373 | psrch_inf->entries_in_buffer = |
4374 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4375 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4376 | psrch_inf->entries_in_buffer; |
b77d753c | 4377 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4378 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4379 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4380 | psrch_inf->last_entry = NULL; |
4381 | return rc; | |
4382 | } | |
4383 | ||
0752f152 | 4384 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4385 | lnoff; |
4386 | ||
1da177e4 LT |
4387 | *pnetfid = parms->SearchHandle; |
4388 | } else { | |
4389 | cifs_buf_release(pSMB); | |
4390 | } | |
4391 | } | |
4392 | ||
4393 | return rc; | |
4394 | } | |
4395 | ||
6d5786a3 PS |
4396 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4397 | __u16 searchHandle, __u16 search_flags, | |
4398 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4399 | { |
4400 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4401 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4402 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4403 | char *response_data; |
4404 | int rc = 0; | |
9438fabb JL |
4405 | int bytes_returned; |
4406 | unsigned int name_len; | |
1da177e4 LT |
4407 | __u16 params, byte_count; |
4408 | ||
b6b38f70 | 4409 | cFYI(1, "In FindNext"); |
1da177e4 | 4410 | |
4b18f2a9 | 4411 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4412 | return -ENOENT; |
4413 | ||
4414 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4415 | (void **) &pSMBr); | |
4416 | if (rc) | |
4417 | return rc; | |
4418 | ||
50c2f753 | 4419 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4420 | byte_count = 0; |
4421 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4422 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4423 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4424 | pSMB->MaxSetupCount = 0; |
4425 | pSMB->Reserved = 0; | |
4426 | pSMB->Flags = 0; | |
4427 | pSMB->Timeout = 0; | |
4428 | pSMB->Reserved2 = 0; | |
4429 | pSMB->ParameterOffset = cpu_to_le16( | |
4430 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4431 | pSMB->DataCount = 0; | |
4432 | pSMB->DataOffset = 0; | |
4433 | pSMB->SetupCount = 1; | |
4434 | pSMB->Reserved3 = 0; | |
4435 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4436 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4437 | pSMB->SearchCount = | |
630f3f0c | 4438 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4439 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4440 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4441 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4442 | |
4443 | name_len = psrch_inf->resume_name_len; | |
4444 | params += name_len; | |
790fe579 | 4445 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4446 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4447 | byte_count += name_len; | |
ef6724e3 SF |
4448 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4449 | pSMB->ResumeFileName[name_len] = 0; | |
4450 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4451 | } else { |
4452 | rc = -EINVAL; | |
4453 | goto FNext2_err_exit; | |
4454 | } | |
4455 | byte_count = params + 1 /* pad */ ; | |
4456 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4457 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4458 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4459 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4460 | |
1da177e4 LT |
4461 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4462 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4463 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4464 | if (rc) { |
4465 | if (rc == -EBADF) { | |
4b18f2a9 | 4466 | psrch_inf->endOfSearch = true; |
6353450a | 4467 | cifs_buf_release(pSMB); |
50c2f753 | 4468 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4469 | } else |
b6b38f70 | 4470 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4471 | } else { /* decode response */ |
4472 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4473 | |
790fe579 | 4474 | if (rc == 0) { |
b77d753c SF |
4475 | unsigned int lnoff; |
4476 | ||
1da177e4 LT |
4477 | /* BB fixme add lock for file (srch_info) struct here */ |
4478 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4479 | psrch_inf->unicode = true; |
1da177e4 | 4480 | else |
4b18f2a9 | 4481 | psrch_inf->unicode = false; |
1da177e4 LT |
4482 | response_data = (char *) &pSMBr->hdr.Protocol + |
4483 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4484 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4485 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4486 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4487 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4488 | cifs_small_buf_release( |
4489 | psrch_inf->ntwrk_buf_start); | |
4490 | else | |
4491 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4492 | psrch_inf->srch_entries_start = response_data; |
4493 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4494 | psrch_inf->smallBuf = 0; |
790fe579 | 4495 | if (parms->EndofSearch) |
4b18f2a9 | 4496 | psrch_inf->endOfSearch = true; |
1da177e4 | 4497 | else |
4b18f2a9 | 4498 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4499 | psrch_inf->entries_in_buffer = |
4500 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4501 | psrch_inf->index_of_last_entry += |
4502 | psrch_inf->entries_in_buffer; | |
b77d753c | 4503 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4504 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4505 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4506 | psrch_inf->last_entry = NULL; |
4507 | return rc; | |
4508 | } else | |
4509 | psrch_inf->last_entry = | |
4510 | psrch_inf->srch_entries_start + lnoff; | |
4511 | ||
b6b38f70 JP |
4512 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4513 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4514 | |
4515 | /* BB fixme add unlock here */ | |
4516 | } | |
4517 | ||
4518 | } | |
4519 | ||
4520 | /* BB On error, should we leave previous search buf (and count and | |
4521 | last entry fields) intact or free the previous one? */ | |
4522 | ||
4523 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4524 | since file handle passed in no longer valid */ | |
4525 | FNext2_err_exit: | |
4526 | if (rc != 0) | |
4527 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4528 | return rc; |
4529 | } | |
4530 | ||
4531 | int | |
6d5786a3 | 4532 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4533 | const __u16 searchHandle) |
1da177e4 LT |
4534 | { |
4535 | int rc = 0; | |
4536 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4537 | |
b6b38f70 | 4538 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4539 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4540 | ||
4541 | /* no sense returning error if session restarted | |
4542 | as file handle has been closed */ | |
790fe579 | 4543 | if (rc == -EAGAIN) |
1da177e4 LT |
4544 | return 0; |
4545 | if (rc) | |
4546 | return rc; | |
4547 | ||
1da177e4 LT |
4548 | pSMB->FileID = searchHandle; |
4549 | pSMB->ByteCount = 0; | |
792af7b0 | 4550 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4551 | if (rc) |
b6b38f70 | 4552 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4553 | |
44c58186 | 4554 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4555 | |
4556 | /* Since session is dead, search handle closed on server already */ | |
4557 | if (rc == -EAGAIN) | |
4558 | rc = 0; | |
4559 | ||
4560 | return rc; | |
4561 | } | |
4562 | ||
1da177e4 | 4563 | int |
6d5786a3 | 4564 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4565 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4566 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4567 | { |
4568 | int rc = 0; | |
4569 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4570 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4571 | int name_len, bytes_returned; | |
4572 | __u16 params, byte_count; | |
4573 | ||
1208ef1f | 4574 | cFYI(1, "In GetSrvInodeNum for %s", search_name); |
790fe579 | 4575 | if (tcon == NULL) |
50c2f753 | 4576 | return -ENODEV; |
1da177e4 LT |
4577 | |
4578 | GetInodeNumberRetry: | |
4579 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4580 | (void **) &pSMBr); |
1da177e4 LT |
4581 | if (rc) |
4582 | return rc; | |
4583 | ||
1da177e4 LT |
4584 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4585 | name_len = | |
acbbb76a | 4586 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4587 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4588 | remap); |
1da177e4 LT |
4589 | name_len++; /* trailing null */ |
4590 | name_len *= 2; | |
50c2f753 | 4591 | } else { /* BB improve the check for buffer overruns BB */ |
1208ef1f | 4592 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4593 | name_len++; /* trailing null */ |
1208ef1f | 4594 | strncpy(pSMB->FileName, search_name, name_len); |
1da177e4 LT |
4595 | } |
4596 | ||
4597 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4598 | pSMB->TotalDataCount = 0; | |
4599 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4600 | /* BB find exact max data count below from sess structure BB */ | |
4601 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4602 | pSMB->MaxSetupCount = 0; | |
4603 | pSMB->Reserved = 0; | |
4604 | pSMB->Flags = 0; | |
4605 | pSMB->Timeout = 0; | |
4606 | pSMB->Reserved2 = 0; | |
4607 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4608 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4609 | pSMB->DataCount = 0; |
4610 | pSMB->DataOffset = 0; | |
4611 | pSMB->SetupCount = 1; | |
4612 | pSMB->Reserved3 = 0; | |
4613 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4614 | byte_count = params + 1 /* pad */ ; | |
4615 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4616 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4617 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4618 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4619 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4620 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4621 | ||
4622 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4623 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4624 | if (rc) { | |
b6b38f70 | 4625 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4626 | } else { |
4627 | /* decode response */ | |
4628 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4629 | /* BB also check enough total bytes returned */ |
820a803f | 4630 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4631 | /* If rc should we check for EOPNOSUPP and |
4632 | disable the srvino flag? or in caller? */ | |
4633 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4634 | else { |
1da177e4 LT |
4635 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4636 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4637 | struct file_internal_info *pfinfo; |
1da177e4 | 4638 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4639 | if (count < 8) { |
b6b38f70 | 4640 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4641 | rc = -EIO; |
4642 | goto GetInodeNumOut; | |
4643 | } | |
4644 | pfinfo = (struct file_internal_info *) | |
4645 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4646 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4647 | } |
4648 | } | |
4649 | GetInodeNumOut: | |
4650 | cifs_buf_release(pSMB); | |
4651 | if (rc == -EAGAIN) | |
4652 | goto GetInodeNumberRetry; | |
4653 | return rc; | |
4654 | } | |
1da177e4 | 4655 | |
fec4585f IM |
4656 | /* parses DFS refferal V3 structure |
4657 | * caller is responsible for freeing target_nodes | |
4658 | * returns: | |
4659 | * on success - 0 | |
4660 | * on failure - errno | |
4661 | */ | |
4662 | static int | |
a1fe78f1 | 4663 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4664 | unsigned int *num_of_nodes, |
4665 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4666 | const struct nls_table *nls_codepage, int remap, |
4667 | const char *searchName) | |
fec4585f IM |
4668 | { |
4669 | int i, rc = 0; | |
4670 | char *data_end; | |
4671 | bool is_unicode; | |
4672 | struct dfs_referral_level_3 *ref; | |
4673 | ||
5ca33c6a HH |
4674 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4675 | is_unicode = true; | |
4676 | else | |
4677 | is_unicode = false; | |
fec4585f IM |
4678 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4679 | ||
4680 | if (*num_of_nodes < 1) { | |
b6b38f70 | 4681 | cERROR(1, "num_referrals: must be at least > 0," |
ac3aa2f8 | 4682 | "but we get num_referrals = %d", *num_of_nodes); |
fec4585f | 4683 | rc = -EINVAL; |
a1fe78f1 | 4684 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4685 | } |
4686 | ||
4687 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4688 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4689 | cERROR(1, "Referrals of V%d version are not supported," |
4690 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4691 | rc = -EINVAL; |
a1fe78f1 | 4692 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4693 | } |
4694 | ||
4695 | /* get the upper boundary of the resp buffer */ | |
4696 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4697 | le16_to_cpu(pSMBr->t2.DataCount); | |
4698 | ||
ac3aa2f8 | 4699 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...", |
fec4585f | 4700 | *num_of_nodes, |
b6b38f70 | 4701 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4702 | |
4703 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4704 | *num_of_nodes, GFP_KERNEL); | |
4705 | if (*target_nodes == NULL) { | |
ac3aa2f8 | 4706 | cERROR(1, "Failed to allocate buffer for target_nodes"); |
fec4585f | 4707 | rc = -ENOMEM; |
a1fe78f1 | 4708 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4709 | } |
4710 | ||
3ad2f3fb | 4711 | /* collect necessary data from referrals */ |
fec4585f IM |
4712 | for (i = 0; i < *num_of_nodes; i++) { |
4713 | char *temp; | |
4714 | int max_len; | |
4715 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4716 | ||
0e0d2cf3 | 4717 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4718 | if (is_unicode) { |
331c3135 JL |
4719 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4720 | GFP_KERNEL); | |
2920ee2b SF |
4721 | if (tmp == NULL) { |
4722 | rc = -ENOMEM; | |
4723 | goto parse_DFS_referrals_exit; | |
4724 | } | |
acbbb76a SF |
4725 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4726 | PATH_MAX, nls_codepage, remap); | |
4727 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4728 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4729 | nls_codepage); |
4730 | kfree(tmp); | |
4731 | } else | |
4732 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4733 | ||
fec4585f IM |
4734 | node->server_type = le16_to_cpu(ref->ServerType); |
4735 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4736 | ||
4737 | /* copy DfsPath */ | |
4738 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4739 | max_len = data_end - temp; | |
acbbb76a SF |
4740 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4741 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4742 | if (!node->path_name) { |
4743 | rc = -ENOMEM; | |
a1fe78f1 | 4744 | goto parse_DFS_referrals_exit; |
066ce689 | 4745 | } |
fec4585f IM |
4746 | |
4747 | /* copy link target UNC */ | |
4748 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4749 | max_len = data_end - temp; | |
acbbb76a SF |
4750 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4751 | is_unicode, nls_codepage); | |
d8f2799b | 4752 | if (!node->node_name) { |
d8e2f53a | 4753 | rc = -ENOMEM; |
d8f2799b SM |
4754 | goto parse_DFS_referrals_exit; |
4755 | } | |
4756 | ||
4757 | ref++; | |
fec4585f IM |
4758 | } |
4759 | ||
a1fe78f1 | 4760 | parse_DFS_referrals_exit: |
fec4585f IM |
4761 | if (rc) { |
4762 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4763 | *target_nodes = NULL; | |
4764 | *num_of_nodes = 0; | |
4765 | } | |
4766 | return rc; | |
4767 | } | |
4768 | ||
1da177e4 | 4769 | int |
6d5786a3 | 4770 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4771 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4772 | unsigned int *num_of_nodes, |
737b758c | 4773 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4774 | { |
4775 | /* TRANS2_GET_DFS_REFERRAL */ | |
4776 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4777 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4778 | int rc = 0; |
4779 | int bytes_returned; | |
4780 | int name_len; | |
1da177e4 | 4781 | __u16 params, byte_count; |
c2cf07d5 SF |
4782 | *num_of_nodes = 0; |
4783 | *target_nodes = NULL; | |
1da177e4 | 4784 | |
b669f33c | 4785 | cFYI(1, "In GetDFSRefer the path %s", search_name); |
1da177e4 LT |
4786 | if (ses == NULL) |
4787 | return -ENODEV; | |
4788 | getDFSRetry: | |
4789 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4790 | (void **) &pSMBr); | |
4791 | if (rc) | |
4792 | return rc; | |
50c2f753 SF |
4793 | |
4794 | /* server pointer checked in called function, | |
1982c344 | 4795 | but should never be null here anyway */ |
88257360 | 4796 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4797 | pSMB->hdr.Tid = ses->ipc_tid; |
4798 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4799 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4800 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4801 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4802 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4803 | |
4804 | if (ses->capabilities & CAP_UNICODE) { | |
4805 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4806 | name_len = | |
acbbb76a | 4807 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4808 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4809 | remap); |
1da177e4 LT |
4810 | name_len++; /* trailing null */ |
4811 | name_len *= 2; | |
50c2f753 | 4812 | } else { /* BB improve the check for buffer overruns BB */ |
b669f33c | 4813 | name_len = strnlen(search_name, PATH_MAX); |
1da177e4 | 4814 | name_len++; /* trailing null */ |
b669f33c | 4815 | strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4 LT |
4816 | } |
4817 | ||
790fe579 | 4818 | if (ses->server) { |
96daf2b0 | 4819 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4820 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4821 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4822 | } | |
4823 | ||
50c2f753 | 4824 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4825 | |
1da177e4 LT |
4826 | params = 2 /* level */ + name_len /*includes null */ ; |
4827 | pSMB->TotalDataCount = 0; | |
4828 | pSMB->DataCount = 0; | |
4829 | pSMB->DataOffset = 0; | |
4830 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4831 | /* BB find exact max SMB PDU from sess structure BB */ |
4832 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4833 | pSMB->MaxSetupCount = 0; |
4834 | pSMB->Reserved = 0; | |
4835 | pSMB->Flags = 0; | |
4836 | pSMB->Timeout = 0; | |
4837 | pSMB->Reserved2 = 0; | |
4838 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4839 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4840 | pSMB->SetupCount = 1; |
4841 | pSMB->Reserved3 = 0; | |
4842 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4843 | byte_count = params + 3 /* pad */ ; | |
4844 | pSMB->ParameterCount = cpu_to_le16(params); | |
4845 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4846 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4847 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4848 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4849 | ||
4850 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4851 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4852 | if (rc) { | |
b6b38f70 | 4853 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4854 | goto GetDFSRefExit; |
4855 | } | |
4856 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4857 | |
c2cf07d5 | 4858 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4859 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4860 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4861 | goto GetDFSRefExit; |
4862 | } | |
c2cf07d5 | 4863 | |
b6b38f70 | 4864 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4865 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4866 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4867 | |
fec4585f | 4868 | /* parse returned result into more usable form */ |
a1fe78f1 | 4869 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f | 4870 | target_nodes, nls_codepage, remap, |
b669f33c | 4871 | search_name); |
c2cf07d5 | 4872 | |
1da177e4 | 4873 | GetDFSRefExit: |
0d817bc0 | 4874 | cifs_buf_release(pSMB); |
1da177e4 LT |
4875 | |
4876 | if (rc == -EAGAIN) | |
4877 | goto getDFSRetry; | |
4878 | ||
4879 | return rc; | |
4880 | } | |
4881 | ||
20962438 SF |
4882 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4883 | int | |
6d5786a3 PS |
4884 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4885 | struct kstatfs *FSData) | |
20962438 SF |
4886 | { |
4887 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4888 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4889 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4890 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4891 | int rc = 0; | |
4892 | int bytes_returned = 0; | |
4893 | __u16 params, byte_count; | |
4894 | ||
b6b38f70 | 4895 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4896 | oldQFSInfoRetry: |
4897 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4898 | (void **) &pSMBr); | |
4899 | if (rc) | |
4900 | return rc; | |
20962438 SF |
4901 | |
4902 | params = 2; /* level */ | |
4903 | pSMB->TotalDataCount = 0; | |
4904 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4905 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4906 | pSMB->MaxSetupCount = 0; | |
4907 | pSMB->Reserved = 0; | |
4908 | pSMB->Flags = 0; | |
4909 | pSMB->Timeout = 0; | |
4910 | pSMB->Reserved2 = 0; | |
4911 | byte_count = params + 1 /* pad */ ; | |
4912 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4913 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4914 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4915 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4916 | pSMB->DataCount = 0; | |
4917 | pSMB->DataOffset = 0; | |
4918 | pSMB->SetupCount = 1; | |
4919 | pSMB->Reserved3 = 0; | |
4920 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4921 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4922 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4923 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4924 | ||
4925 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4926 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4927 | if (rc) { | |
b6b38f70 | 4928 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4929 | } else { /* decode response */ |
4930 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4931 | ||
820a803f | 4932 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4933 | rc = -EIO; /* bad smb */ |
4934 | else { | |
4935 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4936 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4937 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4938 | |
50c2f753 | 4939 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4940 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4941 | FSData->f_bsize = | |
4942 | le16_to_cpu(response_data->BytesPerSector) * | |
4943 | le32_to_cpu(response_data-> | |
4944 | SectorsPerAllocationUnit); | |
4945 | FSData->f_blocks = | |
50c2f753 | 4946 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4947 | FSData->f_bfree = FSData->f_bavail = |
4948 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4949 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4950 | (unsigned long long)FSData->f_blocks, | |
4951 | (unsigned long long)FSData->f_bfree, | |
4952 | FSData->f_bsize); | |
20962438 SF |
4953 | } |
4954 | } | |
4955 | cifs_buf_release(pSMB); | |
4956 | ||
4957 | if (rc == -EAGAIN) | |
4958 | goto oldQFSInfoRetry; | |
4959 | ||
4960 | return rc; | |
4961 | } | |
4962 | ||
1da177e4 | 4963 | int |
6d5786a3 PS |
4964 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4965 | struct kstatfs *FSData) | |
1da177e4 LT |
4966 | { |
4967 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4968 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4969 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4970 | FILE_SYSTEM_INFO *response_data; | |
4971 | int rc = 0; | |
4972 | int bytes_returned = 0; | |
4973 | __u16 params, byte_count; | |
4974 | ||
b6b38f70 | 4975 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4976 | QFSInfoRetry: |
4977 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4978 | (void **) &pSMBr); | |
4979 | if (rc) | |
4980 | return rc; | |
4981 | ||
4982 | params = 2; /* level */ | |
4983 | pSMB->TotalDataCount = 0; | |
4984 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4985 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4986 | pSMB->MaxSetupCount = 0; |
4987 | pSMB->Reserved = 0; | |
4988 | pSMB->Flags = 0; | |
4989 | pSMB->Timeout = 0; | |
4990 | pSMB->Reserved2 = 0; | |
4991 | byte_count = params + 1 /* pad */ ; | |
4992 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4993 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4994 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4995 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4996 | pSMB->DataCount = 0; |
4997 | pSMB->DataOffset = 0; | |
4998 | pSMB->SetupCount = 1; | |
4999 | pSMB->Reserved3 = 0; | |
5000 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5001 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5002 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5003 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5004 | ||
5005 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5006 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5007 | if (rc) { | |
b6b38f70 | 5008 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 5009 | } else { /* decode response */ |
50c2f753 | 5010 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5011 | |
820a803f | 5012 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5013 | rc = -EIO; /* bad smb */ |
5014 | else { | |
5015 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5016 | |
5017 | response_data = | |
5018 | (FILE_SYSTEM_INFO | |
5019 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5020 | data_offset); | |
5021 | FSData->f_bsize = | |
5022 | le32_to_cpu(response_data->BytesPerSector) * | |
5023 | le32_to_cpu(response_data-> | |
5024 | SectorsPerAllocationUnit); | |
5025 | FSData->f_blocks = | |
5026 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5027 | FSData->f_bfree = FSData->f_bavail = | |
5028 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
5029 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
5030 | (unsigned long long)FSData->f_blocks, | |
5031 | (unsigned long long)FSData->f_bfree, | |
5032 | FSData->f_bsize); | |
1da177e4 LT |
5033 | } |
5034 | } | |
5035 | cifs_buf_release(pSMB); | |
5036 | ||
5037 | if (rc == -EAGAIN) | |
5038 | goto QFSInfoRetry; | |
5039 | ||
5040 | return rc; | |
5041 | } | |
5042 | ||
5043 | int | |
6d5786a3 | 5044 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5045 | { |
5046 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5047 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5048 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5049 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5050 | int rc = 0; | |
5051 | int bytes_returned = 0; | |
5052 | __u16 params, byte_count; | |
5053 | ||
b6b38f70 | 5054 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
5055 | QFSAttributeRetry: |
5056 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5057 | (void **) &pSMBr); | |
5058 | if (rc) | |
5059 | return rc; | |
5060 | ||
5061 | params = 2; /* level */ | |
5062 | pSMB->TotalDataCount = 0; | |
5063 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5064 | /* BB find exact max SMB PDU from sess structure BB */ |
5065 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5066 | pSMB->MaxSetupCount = 0; |
5067 | pSMB->Reserved = 0; | |
5068 | pSMB->Flags = 0; | |
5069 | pSMB->Timeout = 0; | |
5070 | pSMB->Reserved2 = 0; | |
5071 | byte_count = params + 1 /* pad */ ; | |
5072 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5073 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5074 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5075 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5076 | pSMB->DataCount = 0; |
5077 | pSMB->DataOffset = 0; | |
5078 | pSMB->SetupCount = 1; | |
5079 | pSMB->Reserved3 = 0; | |
5080 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5081 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5082 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5083 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5084 | ||
5085 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5086 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5087 | if (rc) { | |
b6b38f70 | 5088 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
5089 | } else { /* decode response */ |
5090 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5091 | ||
820a803f | 5092 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5093 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5094 | rc = -EIO; /* bad smb */ |
5095 | } else { | |
5096 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5097 | response_data = | |
5098 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5099 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5100 | data_offset); | |
5101 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5102 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5103 | } |
5104 | } | |
5105 | cifs_buf_release(pSMB); | |
5106 | ||
5107 | if (rc == -EAGAIN) | |
5108 | goto QFSAttributeRetry; | |
5109 | ||
5110 | return rc; | |
5111 | } | |
5112 | ||
5113 | int | |
6d5786a3 | 5114 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5115 | { |
5116 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5117 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5118 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5119 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5120 | int rc = 0; | |
5121 | int bytes_returned = 0; | |
5122 | __u16 params, byte_count; | |
5123 | ||
b6b38f70 | 5124 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
5125 | QFSDeviceRetry: |
5126 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5127 | (void **) &pSMBr); | |
5128 | if (rc) | |
5129 | return rc; | |
5130 | ||
5131 | params = 2; /* level */ | |
5132 | pSMB->TotalDataCount = 0; | |
5133 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5134 | /* BB find exact max SMB PDU from sess structure BB */ |
5135 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5136 | pSMB->MaxSetupCount = 0; |
5137 | pSMB->Reserved = 0; | |
5138 | pSMB->Flags = 0; | |
5139 | pSMB->Timeout = 0; | |
5140 | pSMB->Reserved2 = 0; | |
5141 | byte_count = params + 1 /* pad */ ; | |
5142 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5143 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5144 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5145 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5146 | |
5147 | pSMB->DataCount = 0; | |
5148 | pSMB->DataOffset = 0; | |
5149 | pSMB->SetupCount = 1; | |
5150 | pSMB->Reserved3 = 0; | |
5151 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5152 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5153 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5154 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5155 | ||
5156 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5157 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5158 | if (rc) { | |
b6b38f70 | 5159 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
5160 | } else { /* decode response */ |
5161 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5162 | ||
820a803f JL |
5163 | if (rc || get_bcc(&pSMBr->hdr) < |
5164 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5165 | rc = -EIO; /* bad smb */ |
5166 | else { | |
5167 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5168 | response_data = | |
737b758c SF |
5169 | (FILE_SYSTEM_DEVICE_INFO *) |
5170 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5171 | data_offset); |
5172 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5173 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5174 | } |
5175 | } | |
5176 | cifs_buf_release(pSMB); | |
5177 | ||
5178 | if (rc == -EAGAIN) | |
5179 | goto QFSDeviceRetry; | |
5180 | ||
5181 | return rc; | |
5182 | } | |
5183 | ||
5184 | int | |
6d5786a3 | 5185 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5186 | { |
5187 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5188 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5189 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5190 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5191 | int rc = 0; | |
5192 | int bytes_returned = 0; | |
5193 | __u16 params, byte_count; | |
5194 | ||
b6b38f70 | 5195 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 5196 | QFSUnixRetry: |
f569599a JL |
5197 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5198 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5199 | if (rc) |
5200 | return rc; | |
5201 | ||
5202 | params = 2; /* level */ | |
5203 | pSMB->TotalDataCount = 0; | |
5204 | pSMB->DataCount = 0; | |
5205 | pSMB->DataOffset = 0; | |
5206 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5207 | /* BB find exact max SMB PDU from sess structure BB */ |
5208 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5209 | pSMB->MaxSetupCount = 0; |
5210 | pSMB->Reserved = 0; | |
5211 | pSMB->Flags = 0; | |
5212 | pSMB->Timeout = 0; | |
5213 | pSMB->Reserved2 = 0; | |
5214 | byte_count = params + 1 /* pad */ ; | |
5215 | pSMB->ParameterCount = cpu_to_le16(params); | |
5216 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5217 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5218 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5219 | pSMB->SetupCount = 1; |
5220 | pSMB->Reserved3 = 0; | |
5221 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5222 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5223 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5224 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5225 | ||
5226 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5227 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5228 | if (rc) { | |
b6b38f70 | 5229 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5230 | } else { /* decode response */ |
5231 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5232 | ||
820a803f | 5233 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5234 | rc = -EIO; /* bad smb */ |
5235 | } else { | |
5236 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5237 | response_data = | |
5238 | (FILE_SYSTEM_UNIX_INFO | |
5239 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5240 | data_offset); | |
5241 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5242 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5243 | } |
5244 | } | |
5245 | cifs_buf_release(pSMB); | |
5246 | ||
5247 | if (rc == -EAGAIN) | |
5248 | goto QFSUnixRetry; | |
5249 | ||
5250 | ||
5251 | return rc; | |
5252 | } | |
5253 | ||
ac67055e | 5254 | int |
6d5786a3 | 5255 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5256 | { |
5257 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5258 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5259 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5260 | int rc = 0; | |
5261 | int bytes_returned = 0; | |
5262 | __u16 params, param_offset, offset, byte_count; | |
5263 | ||
b6b38f70 | 5264 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 5265 | SETFSUnixRetry: |
f26282c9 | 5266 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5267 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5268 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5269 | if (rc) |
5270 | return rc; | |
5271 | ||
5272 | params = 4; /* 2 bytes zero followed by info level. */ | |
5273 | pSMB->MaxSetupCount = 0; | |
5274 | pSMB->Reserved = 0; | |
5275 | pSMB->Flags = 0; | |
5276 | pSMB->Timeout = 0; | |
5277 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5278 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5279 | - 4; | |
ac67055e JA |
5280 | offset = param_offset + params; |
5281 | ||
5282 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5283 | /* BB find exact max SMB PDU from sess structure BB */ |
5284 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5285 | pSMB->SetupCount = 1; |
5286 | pSMB->Reserved3 = 0; | |
5287 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5288 | byte_count = 1 /* pad */ + params + 12; | |
5289 | ||
5290 | pSMB->DataCount = cpu_to_le16(12); | |
5291 | pSMB->ParameterCount = cpu_to_le16(params); | |
5292 | pSMB->TotalDataCount = pSMB->DataCount; | |
5293 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5294 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5295 | pSMB->DataOffset = cpu_to_le16(offset); | |
5296 | ||
5297 | /* Params. */ | |
5298 | pSMB->FileNum = 0; | |
5299 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5300 | ||
5301 | /* Data. */ | |
5302 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5303 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5304 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5305 | ||
be8e3b00 | 5306 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5307 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5308 | ||
5309 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5310 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5311 | if (rc) { | |
b6b38f70 | 5312 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
5313 | } else { /* decode response */ |
5314 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5315 | if (rc) |
ac67055e | 5316 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5317 | } |
5318 | cifs_buf_release(pSMB); | |
5319 | ||
5320 | if (rc == -EAGAIN) | |
5321 | goto SETFSUnixRetry; | |
5322 | ||
5323 | return rc; | |
5324 | } | |
5325 | ||
5326 | ||
1da177e4 LT |
5327 | |
5328 | int | |
6d5786a3 | 5329 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 5330 | struct kstatfs *FSData) |
1da177e4 LT |
5331 | { |
5332 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5333 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5334 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5335 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5336 | int rc = 0; | |
5337 | int bytes_returned = 0; | |
5338 | __u16 params, byte_count; | |
5339 | ||
b6b38f70 | 5340 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5341 | QFSPosixRetry: |
5342 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5343 | (void **) &pSMBr); | |
5344 | if (rc) | |
5345 | return rc; | |
5346 | ||
5347 | params = 2; /* level */ | |
5348 | pSMB->TotalDataCount = 0; | |
5349 | pSMB->DataCount = 0; | |
5350 | pSMB->DataOffset = 0; | |
5351 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5352 | /* BB find exact max SMB PDU from sess structure BB */ |
5353 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5354 | pSMB->MaxSetupCount = 0; |
5355 | pSMB->Reserved = 0; | |
5356 | pSMB->Flags = 0; | |
5357 | pSMB->Timeout = 0; | |
5358 | pSMB->Reserved2 = 0; | |
5359 | byte_count = params + 1 /* pad */ ; | |
5360 | pSMB->ParameterCount = cpu_to_le16(params); | |
5361 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5362 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5363 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5364 | pSMB->SetupCount = 1; |
5365 | pSMB->Reserved3 = 0; | |
5366 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5367 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5368 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5369 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5370 | ||
5371 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5372 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5373 | if (rc) { | |
b6b38f70 | 5374 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5375 | } else { /* decode response */ |
5376 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5377 | ||
820a803f | 5378 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5379 | rc = -EIO; /* bad smb */ |
5380 | } else { | |
5381 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5382 | response_data = | |
5383 | (FILE_SYSTEM_POSIX_INFO | |
5384 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5385 | data_offset); | |
5386 | FSData->f_bsize = | |
5387 | le32_to_cpu(response_data->BlockSize); | |
5388 | FSData->f_blocks = | |
5389 | le64_to_cpu(response_data->TotalBlocks); | |
5390 | FSData->f_bfree = | |
5391 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5392 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5393 | FSData->f_bavail = FSData->f_bfree; |
5394 | } else { | |
5395 | FSData->f_bavail = | |
50c2f753 | 5396 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5397 | } |
790fe579 | 5398 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5399 | FSData->f_files = |
50c2f753 | 5400 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5401 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5402 | FSData->f_ffree = |
50c2f753 | 5403 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5404 | } |
5405 | } | |
5406 | cifs_buf_release(pSMB); | |
5407 | ||
5408 | if (rc == -EAGAIN) | |
5409 | goto QFSPosixRetry; | |
5410 | ||
5411 | return rc; | |
5412 | } | |
5413 | ||
5414 | ||
50c2f753 SF |
5415 | /* We can not use write of zero bytes trick to |
5416 | set file size due to need for large file support. Also note that | |
5417 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5418 | routine which is only needed to work around a sharing violation bug |
5419 | in Samba which this routine can run into */ | |
5420 | ||
5421 | int | |
6d5786a3 PS |
5422 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
5423 | const char *fileName, __u64 size, bool SetAllocation, | |
737b758c | 5424 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5425 | { |
5426 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5427 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5428 | struct file_end_of_file_info *parm_data; | |
5429 | int name_len; | |
5430 | int rc = 0; | |
5431 | int bytes_returned = 0; | |
5432 | __u16 params, byte_count, data_count, param_offset, offset; | |
5433 | ||
b6b38f70 | 5434 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5435 | SetEOFRetry: |
5436 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5437 | (void **) &pSMBr); | |
5438 | if (rc) | |
5439 | return rc; | |
5440 | ||
5441 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5442 | name_len = | |
acbbb76a SF |
5443 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5444 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5445 | name_len++; /* trailing null */ |
5446 | name_len *= 2; | |
3e87d803 | 5447 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5448 | name_len = strnlen(fileName, PATH_MAX); |
5449 | name_len++; /* trailing null */ | |
5450 | strncpy(pSMB->FileName, fileName, name_len); | |
5451 | } | |
5452 | params = 6 + name_len; | |
26f57364 | 5453 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5454 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5455 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5456 | pSMB->MaxSetupCount = 0; |
5457 | pSMB->Reserved = 0; | |
5458 | pSMB->Flags = 0; | |
5459 | pSMB->Timeout = 0; | |
5460 | pSMB->Reserved2 = 0; | |
5461 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5462 | InformationLevel) - 4; |
1da177e4 | 5463 | offset = param_offset + params; |
790fe579 | 5464 | if (SetAllocation) { |
50c2f753 SF |
5465 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5466 | pSMB->InformationLevel = | |
5467 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5468 | else | |
5469 | pSMB->InformationLevel = | |
5470 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5471 | } else /* Set File Size */ { | |
1da177e4 LT |
5472 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5473 | pSMB->InformationLevel = | |
50c2f753 | 5474 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5475 | else |
5476 | pSMB->InformationLevel = | |
50c2f753 | 5477 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5478 | } |
5479 | ||
5480 | parm_data = | |
5481 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5482 | offset); | |
5483 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5484 | pSMB->DataOffset = cpu_to_le16(offset); | |
5485 | pSMB->SetupCount = 1; | |
5486 | pSMB->Reserved3 = 0; | |
5487 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5488 | byte_count = 3 /* pad */ + params + data_count; | |
5489 | pSMB->DataCount = cpu_to_le16(data_count); | |
5490 | pSMB->TotalDataCount = pSMB->DataCount; | |
5491 | pSMB->ParameterCount = cpu_to_le16(params); | |
5492 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5493 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5494 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5495 | parm_data->FileSize = cpu_to_le64(size); |
5496 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5497 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5498 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5499 | if (rc) |
b6b38f70 | 5500 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5501 | |
5502 | cifs_buf_release(pSMB); | |
5503 | ||
5504 | if (rc == -EAGAIN) | |
5505 | goto SetEOFRetry; | |
5506 | ||
5507 | return rc; | |
5508 | } | |
5509 | ||
5510 | int | |
6d5786a3 | 5511 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, __u64 size, |
4b18f2a9 | 5512 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5513 | { |
5514 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5515 | struct file_end_of_file_info *parm_data; |
5516 | int rc = 0; | |
1da177e4 LT |
5517 | __u16 params, param_offset, offset, byte_count, count; |
5518 | ||
b6b38f70 JP |
5519 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5520 | (long long)size); | |
cd63499c SF |
5521 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5522 | ||
1da177e4 LT |
5523 | if (rc) |
5524 | return rc; | |
5525 | ||
5526 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5527 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5528 | |
1da177e4 LT |
5529 | params = 6; |
5530 | pSMB->MaxSetupCount = 0; | |
5531 | pSMB->Reserved = 0; | |
5532 | pSMB->Flags = 0; | |
5533 | pSMB->Timeout = 0; | |
5534 | pSMB->Reserved2 = 0; | |
5535 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5536 | offset = param_offset + params; | |
5537 | ||
1da177e4 LT |
5538 | count = sizeof(struct file_end_of_file_info); |
5539 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5540 | /* BB find exact max SMB PDU from sess structure BB */ |
5541 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5542 | pSMB->SetupCount = 1; |
5543 | pSMB->Reserved3 = 0; | |
5544 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5545 | byte_count = 3 /* pad */ + params + count; | |
5546 | pSMB->DataCount = cpu_to_le16(count); | |
5547 | pSMB->ParameterCount = cpu_to_le16(params); | |
5548 | pSMB->TotalDataCount = pSMB->DataCount; | |
5549 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5550 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5551 | parm_data = | |
50c2f753 SF |
5552 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5553 | + offset); | |
1da177e4 LT |
5554 | pSMB->DataOffset = cpu_to_le16(offset); |
5555 | parm_data->FileSize = cpu_to_le64(size); | |
5556 | pSMB->Fid = fid; | |
790fe579 | 5557 | if (SetAllocation) { |
1da177e4 LT |
5558 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5559 | pSMB->InformationLevel = | |
5560 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5561 | else | |
5562 | pSMB->InformationLevel = | |
5563 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5564 | } else /* Set File Size */ { |
1da177e4 LT |
5565 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5566 | pSMB->InformationLevel = | |
50c2f753 | 5567 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5568 | else |
5569 | pSMB->InformationLevel = | |
50c2f753 | 5570 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5571 | } |
5572 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5573 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5574 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5575 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5576 | if (rc) { |
b6b38f70 | 5577 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5578 | } |
5579 | ||
50c2f753 | 5580 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5581 | since file handle passed in no longer valid */ |
5582 | ||
5583 | return rc; | |
5584 | } | |
5585 | ||
50c2f753 | 5586 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5587 | an open handle, rather than by pathname - this is awkward due to |
5588 | potential access conflicts on the open, but it is unavoidable for these | |
5589 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5590 | time and resort to the original setpathinfo level which takes the ancient | |
5591 | DOS time format with 2 second granularity */ | |
5592 | int | |
6d5786a3 | 5593 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5594 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5595 | { |
5596 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5597 | char *data_offset; |
5598 | int rc = 0; | |
1da177e4 LT |
5599 | __u16 params, param_offset, offset, byte_count, count; |
5600 | ||
b6b38f70 | 5601 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5602 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5603 | ||
1da177e4 LT |
5604 | if (rc) |
5605 | return rc; | |
5606 | ||
2dd2dfa0 JL |
5607 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5608 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5609 | |
1da177e4 LT |
5610 | params = 6; |
5611 | pSMB->MaxSetupCount = 0; | |
5612 | pSMB->Reserved = 0; | |
5613 | pSMB->Flags = 0; | |
5614 | pSMB->Timeout = 0; | |
5615 | pSMB->Reserved2 = 0; | |
5616 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5617 | offset = param_offset + params; | |
5618 | ||
b2a3ad9c JL |
5619 | data_offset = (char *)pSMB + |
5620 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5621 | |
26f57364 | 5622 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5623 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5624 | /* BB find max SMB PDU from sess */ |
5625 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5626 | pSMB->SetupCount = 1; |
5627 | pSMB->Reserved3 = 0; | |
5628 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5629 | byte_count = 3 /* pad */ + params + count; | |
5630 | pSMB->DataCount = cpu_to_le16(count); | |
5631 | pSMB->ParameterCount = cpu_to_le16(params); | |
5632 | pSMB->TotalDataCount = pSMB->DataCount; | |
5633 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5634 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5635 | pSMB->DataOffset = cpu_to_le16(offset); | |
5636 | pSMB->Fid = fid; | |
5637 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5638 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5639 | else | |
5640 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5641 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5642 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5643 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5644 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5645 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5646 | if (rc) |
b6b38f70 | 5647 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5648 | |
50c2f753 | 5649 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5650 | since file handle passed in no longer valid */ |
5651 | ||
5652 | return rc; | |
5653 | } | |
5654 | ||
6d22f098 | 5655 | int |
6d5786a3 | 5656 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5657 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5658 | { | |
5659 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5660 | char *data_offset; | |
5661 | int rc = 0; | |
5662 | __u16 params, param_offset, offset, byte_count, count; | |
5663 | ||
b6b38f70 | 5664 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5665 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5666 | ||
5667 | if (rc) | |
5668 | return rc; | |
5669 | ||
5670 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5671 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5672 | ||
5673 | params = 6; | |
5674 | pSMB->MaxSetupCount = 0; | |
5675 | pSMB->Reserved = 0; | |
5676 | pSMB->Flags = 0; | |
5677 | pSMB->Timeout = 0; | |
5678 | pSMB->Reserved2 = 0; | |
5679 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5680 | offset = param_offset + params; | |
5681 | ||
5682 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5683 | ||
5684 | count = 1; | |
5685 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5686 | /* BB find max SMB PDU from sess */ | |
5687 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5688 | pSMB->SetupCount = 1; | |
5689 | pSMB->Reserved3 = 0; | |
5690 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5691 | byte_count = 3 /* pad */ + params + count; | |
5692 | pSMB->DataCount = cpu_to_le16(count); | |
5693 | pSMB->ParameterCount = cpu_to_le16(params); | |
5694 | pSMB->TotalDataCount = pSMB->DataCount; | |
5695 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5696 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5697 | pSMB->DataOffset = cpu_to_le16(offset); | |
5698 | pSMB->Fid = fid; | |
5699 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5700 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5701 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5702 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5703 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5704 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5705 | if (rc) |
b6b38f70 | 5706 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5707 | |
5708 | return rc; | |
5709 | } | |
1da177e4 LT |
5710 | |
5711 | int | |
6d5786a3 | 5712 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5713 | const char *fileName, const FILE_BASIC_INFO *data, |
5714 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5715 | { |
5716 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5717 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5718 | int name_len; | |
5719 | int rc = 0; | |
5720 | int bytes_returned = 0; | |
5721 | char *data_offset; | |
5722 | __u16 params, param_offset, offset, byte_count, count; | |
5723 | ||
b6b38f70 | 5724 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5725 | |
5726 | SetTimesRetry: | |
5727 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5728 | (void **) &pSMBr); | |
5729 | if (rc) | |
5730 | return rc; | |
5731 | ||
5732 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5733 | name_len = | |
acbbb76a SF |
5734 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5735 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5736 | name_len++; /* trailing null */ |
5737 | name_len *= 2; | |
50c2f753 | 5738 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5739 | name_len = strnlen(fileName, PATH_MAX); |
5740 | name_len++; /* trailing null */ | |
5741 | strncpy(pSMB->FileName, fileName, name_len); | |
5742 | } | |
5743 | ||
5744 | params = 6 + name_len; | |
26f57364 | 5745 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5746 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5747 | /* BB find max SMB PDU from sess structure BB */ |
5748 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5749 | pSMB->MaxSetupCount = 0; |
5750 | pSMB->Reserved = 0; | |
5751 | pSMB->Flags = 0; | |
5752 | pSMB->Timeout = 0; | |
5753 | pSMB->Reserved2 = 0; | |
5754 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5755 | InformationLevel) - 4; |
1da177e4 LT |
5756 | offset = param_offset + params; |
5757 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5758 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5759 | pSMB->DataOffset = cpu_to_le16(offset); | |
5760 | pSMB->SetupCount = 1; | |
5761 | pSMB->Reserved3 = 0; | |
5762 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5763 | byte_count = 3 /* pad */ + params + count; | |
5764 | ||
5765 | pSMB->DataCount = cpu_to_le16(count); | |
5766 | pSMB->ParameterCount = cpu_to_le16(params); | |
5767 | pSMB->TotalDataCount = pSMB->DataCount; | |
5768 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5769 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5770 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5771 | else | |
5772 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5773 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5774 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5775 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5776 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5777 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5778 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5779 | if (rc) |
b6b38f70 | 5780 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5781 | |
5782 | cifs_buf_release(pSMB); | |
5783 | ||
5784 | if (rc == -EAGAIN) | |
5785 | goto SetTimesRetry; | |
5786 | ||
5787 | return rc; | |
5788 | } | |
5789 | ||
5790 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5791 | /* Can be used to set attributes */ | |
5792 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5793 | handling it anyway and NT4 was what we thought it would be needed for | |
5794 | Do not delete it until we prove whether needed for Win9x though */ | |
5795 | int | |
6d5786a3 | 5796 | CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5797 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5798 | { | |
5799 | SETATTR_REQ *pSMB = NULL; | |
5800 | SETATTR_RSP *pSMBr = NULL; | |
5801 | int rc = 0; | |
5802 | int bytes_returned; | |
5803 | int name_len; | |
5804 | ||
b6b38f70 | 5805 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5806 | |
5807 | SetAttrLgcyRetry: | |
5808 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5809 | (void **) &pSMBr); | |
5810 | if (rc) | |
5811 | return rc; | |
5812 | ||
5813 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5814 | name_len = | |
acbbb76a SF |
5815 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5816 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5817 | name_len++; /* trailing null */ |
5818 | name_len *= 2; | |
50c2f753 | 5819 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5820 | name_len = strnlen(fileName, PATH_MAX); |
5821 | name_len++; /* trailing null */ | |
5822 | strncpy(pSMB->fileName, fileName, name_len); | |
5823 | } | |
5824 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5825 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5826 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5827 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5828 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5829 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5830 | if (rc) |
b6b38f70 | 5831 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5832 | |
5833 | cifs_buf_release(pSMB); | |
5834 | ||
5835 | if (rc == -EAGAIN) | |
5836 | goto SetAttrLgcyRetry; | |
5837 | ||
5838 | return rc; | |
5839 | } | |
5840 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5841 | ||
654cf14a JL |
5842 | static void |
5843 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5844 | const struct cifs_unix_set_info_args *args) | |
5845 | { | |
5846 | u64 mode = args->mode; | |
5847 | ||
5848 | /* | |
5849 | * Samba server ignores set of file size to zero due to bugs in some | |
5850 | * older clients, but we should be precise - we use SetFileSize to | |
5851 | * set file size and do not want to truncate file size to zero | |
25985edc | 5852 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5853 | * zero instead of -1 here |
5854 | */ | |
5855 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5856 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5857 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5858 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5859 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5860 | data_offset->Uid = cpu_to_le64(args->uid); | |
5861 | data_offset->Gid = cpu_to_le64(args->gid); | |
5862 | /* better to leave device as zero when it is */ | |
5863 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5864 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5865 | data_offset->Permissions = cpu_to_le64(mode); | |
5866 | ||
5867 | if (S_ISREG(mode)) | |
5868 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5869 | else if (S_ISDIR(mode)) | |
5870 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5871 | else if (S_ISLNK(mode)) | |
5872 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5873 | else if (S_ISCHR(mode)) | |
5874 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5875 | else if (S_ISBLK(mode)) | |
5876 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5877 | else if (S_ISFIFO(mode)) | |
5878 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5879 | else if (S_ISSOCK(mode)) | |
5880 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5881 | } | |
5882 | ||
3bbeeb3c | 5883 | int |
6d5786a3 | 5884 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5885 | const struct cifs_unix_set_info_args *args, |
5886 | u16 fid, u32 pid_of_opener) | |
5887 | { | |
5888 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5889 | char *data_offset; |
3bbeeb3c JL |
5890 | int rc = 0; |
5891 | u16 params, param_offset, offset, byte_count, count; | |
5892 | ||
b6b38f70 | 5893 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5894 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5895 | ||
5896 | if (rc) | |
5897 | return rc; | |
5898 | ||
5899 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5900 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5901 | ||
5902 | params = 6; | |
5903 | pSMB->MaxSetupCount = 0; | |
5904 | pSMB->Reserved = 0; | |
5905 | pSMB->Flags = 0; | |
5906 | pSMB->Timeout = 0; | |
5907 | pSMB->Reserved2 = 0; | |
5908 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5909 | offset = param_offset + params; | |
5910 | ||
b2a3ad9c JL |
5911 | data_offset = (char *)pSMB + |
5912 | offsetof(struct smb_hdr, Protocol) + offset; | |
5913 | ||
3bbeeb3c JL |
5914 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5915 | ||
5916 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5917 | /* BB find max SMB PDU from sess */ | |
5918 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5919 | pSMB->SetupCount = 1; | |
5920 | pSMB->Reserved3 = 0; | |
5921 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5922 | byte_count = 3 /* pad */ + params + count; | |
5923 | pSMB->DataCount = cpu_to_le16(count); | |
5924 | pSMB->ParameterCount = cpu_to_le16(params); | |
5925 | pSMB->TotalDataCount = pSMB->DataCount; | |
5926 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5927 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5928 | pSMB->DataOffset = cpu_to_le16(offset); | |
5929 | pSMB->Fid = fid; | |
5930 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5931 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5932 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5933 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5934 | ||
b2a3ad9c | 5935 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5936 | |
792af7b0 | 5937 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5938 | if (rc) |
b6b38f70 | 5939 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5940 | |
5941 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5942 | since file handle passed in no longer valid */ | |
5943 | ||
5944 | return rc; | |
5945 | } | |
5946 | ||
1da177e4 | 5947 | int |
6d5786a3 | 5948 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5949 | const char *file_name, |
01ea95e3 JL |
5950 | const struct cifs_unix_set_info_args *args, |
5951 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5952 | { |
5953 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5954 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5955 | int name_len; | |
5956 | int rc = 0; | |
5957 | int bytes_returned = 0; | |
5958 | FILE_UNIX_BASIC_INFO *data_offset; | |
5959 | __u16 params, param_offset, offset, count, byte_count; | |
5960 | ||
b6b38f70 | 5961 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5962 | setPermsRetry: |
5963 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5964 | (void **) &pSMBr); | |
5965 | if (rc) | |
5966 | return rc; | |
5967 | ||
5968 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5969 | name_len = | |
ff691e96 | 5970 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5971 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5972 | name_len++; /* trailing null */ |
5973 | name_len *= 2; | |
3e87d803 | 5974 | } else { /* BB improve the check for buffer overruns BB */ |
ff691e96 | 5975 | name_len = strnlen(file_name, PATH_MAX); |
1da177e4 | 5976 | name_len++; /* trailing null */ |
ff691e96 | 5977 | strncpy(pSMB->FileName, file_name, name_len); |
1da177e4 LT |
5978 | } |
5979 | ||
5980 | params = 6 + name_len; | |
26f57364 | 5981 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5982 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5983 | /* BB find max SMB PDU from sess structure BB */ |
5984 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5985 | pSMB->MaxSetupCount = 0; |
5986 | pSMB->Reserved = 0; | |
5987 | pSMB->Flags = 0; | |
5988 | pSMB->Timeout = 0; | |
5989 | pSMB->Reserved2 = 0; | |
5990 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5991 | InformationLevel) - 4; |
1da177e4 LT |
5992 | offset = param_offset + params; |
5993 | data_offset = | |
5994 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5995 | offset); | |
5996 | memset(data_offset, 0, count); | |
5997 | pSMB->DataOffset = cpu_to_le16(offset); | |
5998 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5999 | pSMB->SetupCount = 1; | |
6000 | pSMB->Reserved3 = 0; | |
6001 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6002 | byte_count = 3 /* pad */ + params + count; | |
6003 | pSMB->ParameterCount = cpu_to_le16(params); | |
6004 | pSMB->DataCount = cpu_to_le16(count); | |
6005 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6006 | pSMB->TotalDataCount = pSMB->DataCount; | |
6007 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6008 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6009 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6010 | |
654cf14a | 6011 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6012 | |
6013 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6014 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6015 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6016 | if (rc) |
b6b38f70 | 6017 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 6018 | |
0d817bc0 | 6019 | cifs_buf_release(pSMB); |
1da177e4 LT |
6020 | if (rc == -EAGAIN) |
6021 | goto setPermsRetry; | |
6022 | return rc; | |
6023 | } | |
6024 | ||
1da177e4 | 6025 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6026 | /* |
6027 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6028 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6029 | * it looks for that attribute name and stuffs that value into the EAData | |
6030 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6031 | * buffer. In both cases, the return value is either the length of the | |
6032 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6033 | * the data isn't copied to it, but the length is returned. | |
6034 | */ | |
1da177e4 | 6035 | ssize_t |
6d5786a3 | 6036 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6037 | const unsigned char *searchName, const unsigned char *ea_name, |
6038 | char *EAData, size_t buf_size, | |
6039 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6040 | { |
6041 | /* BB assumes one setup word */ | |
6042 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6043 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6044 | int rc = 0; | |
6045 | int bytes_returned; | |
6e462b9f | 6046 | int list_len; |
f0d3868b | 6047 | struct fealist *ea_response_data; |
50c2f753 SF |
6048 | struct fea *temp_fea; |
6049 | char *temp_ptr; | |
0cd126b5 | 6050 | char *end_of_smb; |
f0d3868b | 6051 | __u16 params, byte_count, data_offset; |
5980fc96 | 6052 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6053 | |
b6b38f70 | 6054 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
6055 | QAllEAsRetry: |
6056 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6057 | (void **) &pSMBr); | |
6058 | if (rc) | |
6059 | return rc; | |
6060 | ||
6061 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6062 | list_len = |
acbbb76a SF |
6063 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6064 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6065 | list_len++; /* trailing null */ |
6066 | list_len *= 2; | |
1da177e4 | 6067 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6068 | list_len = strnlen(searchName, PATH_MAX); |
6069 | list_len++; /* trailing null */ | |
6070 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6071 | } |
6072 | ||
6e462b9f | 6073 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6074 | pSMB->TotalDataCount = 0; |
6075 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6076 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6077 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6078 | pSMB->MaxSetupCount = 0; |
6079 | pSMB->Reserved = 0; | |
6080 | pSMB->Flags = 0; | |
6081 | pSMB->Timeout = 0; | |
6082 | pSMB->Reserved2 = 0; | |
6083 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6084 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6085 | pSMB->DataCount = 0; |
6086 | pSMB->DataOffset = 0; | |
6087 | pSMB->SetupCount = 1; | |
6088 | pSMB->Reserved3 = 0; | |
6089 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6090 | byte_count = params + 1 /* pad */ ; | |
6091 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6092 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6093 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6094 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6095 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6096 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6097 | ||
6098 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6099 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6100 | if (rc) { | |
b6b38f70 | 6101 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
6102 | goto QAllEAsOut; |
6103 | } | |
1da177e4 | 6104 | |
f0d3868b JL |
6105 | |
6106 | /* BB also check enough total bytes returned */ | |
6107 | /* BB we need to improve the validity checking | |
6108 | of these trans2 responses */ | |
6109 | ||
6110 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6111 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6112 | rc = -EIO; /* bad smb */ |
6113 | goto QAllEAsOut; | |
6114 | } | |
6115 | ||
6116 | /* check that length of list is not more than bcc */ | |
6117 | /* check that each entry does not go beyond length | |
6118 | of list */ | |
6119 | /* check that each element of each entry does not | |
6120 | go beyond end of list */ | |
6121 | /* validate_trans2_offsets() */ | |
6122 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6123 | ||
6124 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6125 | ea_response_data = (struct fealist *) | |
6126 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6127 | ||
6e462b9f | 6128 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 6129 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 6130 | if (list_len <= 8) { |
b6b38f70 | 6131 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
6132 | goto QAllEAsOut; |
6133 | } | |
6134 | ||
0cd126b5 | 6135 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6136 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6137 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 6138 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
6139 | rc = -EIO; |
6140 | goto QAllEAsOut; | |
6141 | } | |
6142 | ||
f0d3868b | 6143 | /* account for ea list len */ |
6e462b9f | 6144 | list_len -= 4; |
f0d3868b JL |
6145 | temp_fea = ea_response_data->list; |
6146 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6147 | while (list_len > 0) { |
122ca007 | 6148 | unsigned int name_len; |
f0d3868b | 6149 | __u16 value_len; |
0cd126b5 | 6150 | |
6e462b9f | 6151 | list_len -= 4; |
f0d3868b | 6152 | temp_ptr += 4; |
0cd126b5 JL |
6153 | /* make sure we can read name_len and value_len */ |
6154 | if (list_len < 0) { | |
b6b38f70 | 6155 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6156 | rc = -EIO; |
6157 | goto QAllEAsOut; | |
6158 | } | |
6159 | ||
6160 | name_len = temp_fea->name_len; | |
6161 | value_len = le16_to_cpu(temp_fea->value_len); | |
6162 | list_len -= name_len + 1 + value_len; | |
6163 | if (list_len < 0) { | |
b6b38f70 | 6164 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6165 | rc = -EIO; |
6166 | goto QAllEAsOut; | |
6167 | } | |
6168 | ||
31c0519f | 6169 | if (ea_name) { |
91d065c4 | 6170 | if (ea_name_len == name_len && |
ac423446 | 6171 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6172 | temp_ptr += name_len + 1; |
6173 | rc = value_len; | |
6174 | if (buf_size == 0) | |
6175 | goto QAllEAsOut; | |
6176 | if ((size_t)value_len > buf_size) { | |
6177 | rc = -ERANGE; | |
6178 | goto QAllEAsOut; | |
6179 | } | |
6180 | memcpy(EAData, temp_ptr, value_len); | |
6181 | goto QAllEAsOut; | |
6182 | } | |
f0d3868b | 6183 | } else { |
31c0519f JL |
6184 | /* account for prefix user. and trailing null */ |
6185 | rc += (5 + 1 + name_len); | |
6186 | if (rc < (int) buf_size) { | |
6187 | memcpy(EAData, "user.", 5); | |
6188 | EAData += 5; | |
6189 | memcpy(EAData, temp_ptr, name_len); | |
6190 | EAData += name_len; | |
6191 | /* null terminate name */ | |
6192 | *EAData = 0; | |
6193 | ++EAData; | |
6194 | } else if (buf_size == 0) { | |
6195 | /* skip copy - calc size only */ | |
6196 | } else { | |
6197 | /* stop before overrun buffer */ | |
6198 | rc = -ERANGE; | |
6199 | break; | |
6200 | } | |
1da177e4 | 6201 | } |
0cd126b5 | 6202 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6203 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6204 | } |
f0d3868b | 6205 | |
31c0519f JL |
6206 | /* didn't find the named attribute */ |
6207 | if (ea_name) | |
6208 | rc = -ENODATA; | |
6209 | ||
f0d3868b | 6210 | QAllEAsOut: |
0d817bc0 | 6211 | cifs_buf_release(pSMB); |
1da177e4 LT |
6212 | if (rc == -EAGAIN) |
6213 | goto QAllEAsRetry; | |
6214 | ||
6215 | return (ssize_t)rc; | |
6216 | } | |
6217 | ||
1da177e4 | 6218 | int |
6d5786a3 PS |
6219 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
6220 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 SF |
6221 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
6222 | int remap) | |
1da177e4 LT |
6223 | { |
6224 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6225 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6226 | struct fealist *parm_data; | |
6227 | int name_len; | |
6228 | int rc = 0; | |
6229 | int bytes_returned = 0; | |
6230 | __u16 params, param_offset, byte_count, offset, count; | |
6231 | ||
b6b38f70 | 6232 | cFYI(1, "In SetEA"); |
1da177e4 LT |
6233 | SetEARetry: |
6234 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6235 | (void **) &pSMBr); | |
6236 | if (rc) | |
6237 | return rc; | |
6238 | ||
6239 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6240 | name_len = | |
acbbb76a SF |
6241 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6242 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6243 | name_len++; /* trailing null */ |
6244 | name_len *= 2; | |
50c2f753 | 6245 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6246 | name_len = strnlen(fileName, PATH_MAX); |
6247 | name_len++; /* trailing null */ | |
6248 | strncpy(pSMB->FileName, fileName, name_len); | |
6249 | } | |
6250 | ||
6251 | params = 6 + name_len; | |
6252 | ||
6253 | /* done calculating parms using name_len of file name, | |
6254 | now use name_len to calculate length of ea name | |
6255 | we are going to create in the inode xattrs */ | |
790fe579 | 6256 | if (ea_name == NULL) |
1da177e4 LT |
6257 | name_len = 0; |
6258 | else | |
50c2f753 | 6259 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6260 | |
dae5dbdb | 6261 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6262 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6263 | /* BB find max SMB PDU from sess */ |
6264 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6265 | pSMB->MaxSetupCount = 0; |
6266 | pSMB->Reserved = 0; | |
6267 | pSMB->Flags = 0; | |
6268 | pSMB->Timeout = 0; | |
6269 | pSMB->Reserved2 = 0; | |
6270 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6271 | InformationLevel) - 4; |
1da177e4 LT |
6272 | offset = param_offset + params; |
6273 | pSMB->InformationLevel = | |
6274 | cpu_to_le16(SMB_SET_FILE_EA); | |
6275 | ||
6276 | parm_data = | |
6277 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6278 | offset); | |
6279 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6280 | pSMB->DataOffset = cpu_to_le16(offset); | |
6281 | pSMB->SetupCount = 1; | |
6282 | pSMB->Reserved3 = 0; | |
6283 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6284 | byte_count = 3 /* pad */ + params + count; | |
6285 | pSMB->DataCount = cpu_to_le16(count); | |
6286 | parm_data->list_len = cpu_to_le32(count); | |
6287 | parm_data->list[0].EA_flags = 0; | |
6288 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6289 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6290 | /* EA names are always ASCII */ |
790fe579 | 6291 | if (ea_name) |
50c2f753 | 6292 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6293 | parm_data->list[0].name[name_len] = 0; |
6294 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6295 | /* caller ensures that ea_value_len is less than 64K but | |
6296 | we need to ensure that it fits within the smb */ | |
6297 | ||
50c2f753 SF |
6298 | /*BB add length check to see if it would fit in |
6299 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6300 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6301 | if (ea_value_len) | |
50c2f753 SF |
6302 | memcpy(parm_data->list[0].name+name_len+1, |
6303 | ea_value, ea_value_len); | |
1da177e4 LT |
6304 | |
6305 | pSMB->TotalDataCount = pSMB->DataCount; | |
6306 | pSMB->ParameterCount = cpu_to_le16(params); | |
6307 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6308 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6309 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6310 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6311 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6312 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6313 | if (rc) |
b6b38f70 | 6314 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
6315 | |
6316 | cifs_buf_release(pSMB); | |
6317 | ||
6318 | if (rc == -EAGAIN) | |
6319 | goto SetEARetry; | |
6320 | ||
6321 | return rc; | |
6322 | } | |
1da177e4 | 6323 | #endif |
0eff0e26 SF |
6324 | |
6325 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6326 | /* | |
6327 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6328 | * to allow network clients (such as Windows) to display updated | |
6329 | * lists of files in directory listings automatically when | |
6330 | * files are added by one user when another user has the | |
6331 | * same directory open on their desktop. The Linux cifs kernel | |
6332 | * client hooked into the kernel side of this interface for | |
6333 | * the same reason, but ironically when the VFS moved from | |
6334 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6335 | * network file system clients (the most obvious use case | |
6336 | * for notify interfaces is when multiple users can update | |
6337 | * the contents of the same directory - exactly what network | |
6338 | * file systems can do) although the server (Samba) could | |
6339 | * still use it. For the short term we leave the worker | |
6340 | * function ifdeffed out (below) until inotify is fixed | |
6341 | * in the VFS to make it easier to plug in network file | |
6342 | * system clients. If inotify turns out to be permanently | |
6343 | * incompatible for network fs clients, we could instead simply | |
6344 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6345 | */ | |
6d5786a3 | 6346 | int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6347 | const int notify_subdirs, const __u16 netfid, |
6348 | __u32 filter, struct file *pfile, int multishot, | |
6349 | const struct nls_table *nls_codepage) | |
6350 | { | |
6351 | int rc = 0; | |
6352 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6353 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6354 | struct dir_notify_req *dnotify_req; | |
6355 | int bytes_returned; | |
6356 | ||
6357 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6358 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6359 | (void **) &pSMBr); | |
6360 | if (rc) | |
6361 | return rc; | |
6362 | ||
6363 | pSMB->TotalParameterCount = 0 ; | |
6364 | pSMB->TotalDataCount = 0; | |
6365 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6366 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6367 | pSMB->MaxSetupCount = 4; |
6368 | pSMB->Reserved = 0; | |
6369 | pSMB->ParameterOffset = 0; | |
6370 | pSMB->DataCount = 0; | |
6371 | pSMB->DataOffset = 0; | |
6372 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6373 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6374 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6375 | if (notify_subdirs) | |
6376 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6377 | pSMB->Reserved2 = 0; | |
6378 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6379 | pSMB->Fid = netfid; /* file handle always le */ | |
6380 | pSMB->ByteCount = 0; | |
6381 | ||
6382 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6383 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6384 | CIFS_ASYNC_OP); | |
6385 | if (rc) { | |
6386 | cFYI(1, "Error in Notify = %d", rc); | |
6387 | } else { | |
6388 | /* Add file to outstanding requests */ | |
6389 | /* BB change to kmem cache alloc */ | |
6390 | dnotify_req = kmalloc( | |
6391 | sizeof(struct dir_notify_req), | |
6392 | GFP_KERNEL); | |
6393 | if (dnotify_req) { | |
6394 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6395 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6396 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6397 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6398 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6399 | dnotify_req->netfid = netfid; | |
6400 | dnotify_req->pfile = pfile; | |
6401 | dnotify_req->filter = filter; | |
6402 | dnotify_req->multishot = multishot; | |
6403 | spin_lock(&GlobalMid_Lock); | |
6404 | list_add_tail(&dnotify_req->lhead, | |
6405 | &GlobalDnotifyReqList); | |
6406 | spin_unlock(&GlobalMid_Lock); | |
6407 | } else | |
6408 | rc = -ENOMEM; | |
6409 | } | |
6410 | cifs_buf_release(pSMB); | |
6411 | return rc; | |
6412 | } | |
6413 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |