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 | |
1da177e4 LT |
115 | /* Mark as invalid, all open files on tree connections since they |
116 | were closed when session to server was lost */ | |
96daf2b0 | 117 | static void mark_open_files_invalid(struct cifs_tcon *pTcon) |
1da177e4 LT |
118 | { |
119 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
120 | struct list_head *tmp; |
121 | struct list_head *tmp1; | |
1da177e4 LT |
122 | |
123 | /* list all files open on tree connection and mark them invalid */ | |
4477288a | 124 | spin_lock(&cifs_file_list_lock); |
1da177e4 | 125 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
790fe579 | 126 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 127 | open_file->invalidHandle = true; |
3bc303c2 | 128 | open_file->oplock_break_cancelled = true; |
1da177e4 | 129 | } |
4477288a | 130 | spin_unlock(&cifs_file_list_lock); |
09d1db5c SF |
131 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
132 | to this tcon */ | |
1da177e4 LT |
133 | } |
134 | ||
9162ab20 JL |
135 | /* reconnect the socket, tcon, and smb session if needed */ |
136 | static int | |
96daf2b0 | 137 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 138 | { |
c4a5534a | 139 | int rc; |
96daf2b0 | 140 | struct cifs_ses *ses; |
9162ab20 JL |
141 | struct TCP_Server_Info *server; |
142 | struct nls_table *nls_codepage; | |
143 | ||
144 | /* | |
145 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
146 | * tcp and smb session status done differently for those three - in the | |
147 | * calling routine | |
148 | */ | |
149 | if (!tcon) | |
150 | return 0; | |
151 | ||
152 | ses = tcon->ses; | |
153 | server = ses->server; | |
154 | ||
155 | /* | |
156 | * only tree disconnect, open, and write, (and ulogoff which does not | |
157 | * have tcon) are allowed as we start force umount | |
158 | */ | |
159 | if (tcon->tidStatus == CifsExiting) { | |
160 | if (smb_command != SMB_COM_WRITE_ANDX && | |
161 | smb_command != SMB_COM_OPEN_ANDX && | |
162 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
163 | cFYI(1, "can not send cmd %d while umounting", |
164 | smb_command); | |
9162ab20 JL |
165 | return -ENODEV; |
166 | } | |
167 | } | |
168 | ||
9162ab20 JL |
169 | /* |
170 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
171 | * greater than cifs socket timeout which is 7 seconds | |
172 | */ | |
173 | while (server->tcpStatus == CifsNeedReconnect) { | |
174 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 175 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 176 | |
fd88ce93 | 177 | /* are we still trying to reconnect? */ |
9162ab20 JL |
178 | if (server->tcpStatus != CifsNeedReconnect) |
179 | break; | |
180 | ||
181 | /* | |
182 | * on "soft" mounts we wait once. Hard mounts keep | |
183 | * retrying until process is killed or server comes | |
184 | * back on-line | |
185 | */ | |
d402539b | 186 | if (!tcon->retry) { |
b6b38f70 | 187 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
188 | return -EHOSTDOWN; |
189 | } | |
190 | } | |
191 | ||
192 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
193 | return 0; | |
194 | ||
195 | nls_codepage = load_nls_default(); | |
196 | ||
197 | /* | |
198 | * need to prevent multiple threads trying to simultaneously | |
199 | * reconnect the same SMB session | |
200 | */ | |
d7b619cf | 201 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
202 | rc = cifs_negotiate_protocol(0, ses); |
203 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
204 | rc = cifs_setup_session(0, ses, nls_codepage); |
205 | ||
206 | /* do we need to reconnect tcon? */ | |
207 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 208 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
209 | goto out; |
210 | } | |
211 | ||
212 | mark_open_files_invalid(tcon); | |
213 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 214 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 215 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
216 | |
217 | if (rc) | |
218 | goto out; | |
219 | ||
220 | /* | |
221 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
222 | * size shrinking | |
223 | */ | |
224 | atomic_inc(&tconInfoReconnectCount); | |
225 | ||
226 | /* tell server Unix caps we support */ | |
227 | if (ses->capabilities & CAP_UNIX) | |
228 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
229 | ||
230 | /* | |
231 | * Removed call to reopen open files here. It is safer (and faster) to | |
232 | * reopen files one at a time as needed in read and write. | |
233 | * | |
234 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
235 | */ | |
236 | ||
237 | out: | |
238 | /* | |
239 | * Check if handle based operation so we know whether we can continue | |
240 | * or not without returning to caller to reset file handle | |
241 | */ | |
242 | switch (smb_command) { | |
243 | case SMB_COM_READ_ANDX: | |
244 | case SMB_COM_WRITE_ANDX: | |
245 | case SMB_COM_CLOSE: | |
246 | case SMB_COM_FIND_CLOSE2: | |
247 | case SMB_COM_LOCKING_ANDX: | |
248 | rc = -EAGAIN; | |
249 | } | |
250 | ||
251 | unload_nls(nls_codepage); | |
252 | return rc; | |
253 | } | |
254 | ||
ad7a2926 SF |
255 | /* Allocate and return pointer to an SMB request buffer, and set basic |
256 | SMB information in the SMB header. If the return code is zero, this | |
257 | function must have filled in request_buf pointer */ | |
1da177e4 | 258 | static int |
96daf2b0 | 259 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 260 | void **request_buf) |
1da177e4 | 261 | { |
f569599a | 262 | int rc; |
1da177e4 | 263 | |
9162ab20 | 264 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 265 | if (rc) |
1da177e4 LT |
266 | return rc; |
267 | ||
268 | *request_buf = cifs_small_buf_get(); | |
269 | if (*request_buf == NULL) { | |
270 | /* BB should we add a retry in here if not a writepage? */ | |
271 | return -ENOMEM; | |
272 | } | |
273 | ||
63135e08 | 274 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 275 | tcon, wct); |
1da177e4 | 276 | |
790fe579 SF |
277 | if (tcon != NULL) |
278 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 279 | |
f569599a | 280 | return 0; |
5815449d SF |
281 | } |
282 | ||
12b3b8ff | 283 | int |
50c2f753 | 284 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 285 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
286 | { |
287 | int rc; | |
50c2f753 | 288 | struct smb_hdr *buffer; |
12b3b8ff | 289 | |
5815449d | 290 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 291 | if (rc) |
12b3b8ff SF |
292 | return rc; |
293 | ||
04fdabe1 | 294 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 295 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
296 | if (ses->capabilities & CAP_UNICODE) |
297 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 298 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
299 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
300 | ||
301 | /* uid, tid can stay at zero as set in header assemble */ | |
302 | ||
50c2f753 | 303 | /* BB add support for turning on the signing when |
12b3b8ff SF |
304 | this function is used after 1st of session setup requests */ |
305 | ||
306 | return rc; | |
307 | } | |
1da177e4 LT |
308 | |
309 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
310 | static int | |
96daf2b0 | 311 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 312 | void **request_buf, void **response_buf) |
1da177e4 | 313 | { |
1da177e4 LT |
314 | *request_buf = cifs_buf_get(); |
315 | if (*request_buf == NULL) { | |
316 | /* BB should we add a retry in here if not a writepage? */ | |
317 | return -ENOMEM; | |
318 | } | |
319 | /* Although the original thought was we needed the response buf for */ | |
320 | /* potential retries of smb operations it turns out we can determine */ | |
321 | /* from the mid flags when the request buffer can be resent without */ | |
322 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 323 | if (response_buf) |
50c2f753 | 324 | *response_buf = *request_buf; |
1da177e4 LT |
325 | |
326 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 327 | wct); |
1da177e4 | 328 | |
790fe579 SF |
329 | if (tcon != NULL) |
330 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 331 | |
f569599a JL |
332 | return 0; |
333 | } | |
334 | ||
335 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
336 | static int | |
96daf2b0 | 337 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
338 | void **request_buf, void **response_buf) |
339 | { | |
340 | int rc; | |
341 | ||
342 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
343 | if (rc) | |
344 | return rc; | |
345 | ||
346 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
347 | } | |
348 | ||
349 | static int | |
96daf2b0 | 350 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
351 | void **request_buf, void **response_buf) |
352 | { | |
353 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
354 | return -EHOSTDOWN; | |
355 | ||
356 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
357 | } |
358 | ||
50c2f753 | 359 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 360 | { |
12df83c9 JL |
361 | unsigned int total_size; |
362 | ||
363 | /* check for plausible wct */ | |
364 | if (pSMB->hdr.WordCount < 10) | |
365 | goto vt2_err; | |
1da177e4 | 366 | |
1da177e4 | 367 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
368 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
369 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
370 | goto vt2_err; | |
371 | ||
12df83c9 JL |
372 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
373 | if (total_size >= 512) | |
374 | goto vt2_err; | |
375 | ||
fd5707e1 JL |
376 | /* check that bcc is at least as big as parms + data, and that it is |
377 | * less than negotiated smb buffer | |
378 | */ | |
12df83c9 JL |
379 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
380 | if (total_size > get_bcc(&pSMB->hdr) || | |
381 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
382 | goto vt2_err; | |
383 | ||
384 | return 0; | |
385 | vt2_err: | |
50c2f753 | 386 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 387 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 388 | return -EINVAL; |
1da177e4 | 389 | } |
690c522f | 390 | |
be8e3b00 SF |
391 | static inline void inc_rfc1001_len(void *pSMB, int count) |
392 | { | |
393 | struct smb_hdr *hdr = (struct smb_hdr *)pSMB; | |
394 | ||
395 | be32_add_cpu(&hdr->smb_buf_length, count); | |
396 | } | |
397 | ||
1da177e4 | 398 | int |
96daf2b0 | 399 | CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
400 | { |
401 | NEGOTIATE_REQ *pSMB; | |
402 | NEGOTIATE_RSP *pSMBr; | |
403 | int rc = 0; | |
404 | int bytes_returned; | |
3979877e | 405 | int i; |
50c2f753 | 406 | struct TCP_Server_Info *server; |
1da177e4 | 407 | u16 count; |
750d1151 | 408 | unsigned int secFlags; |
1da177e4 | 409 | |
790fe579 | 410 | if (ses->server) |
1da177e4 LT |
411 | server = ses->server; |
412 | else { | |
413 | rc = -EIO; | |
414 | return rc; | |
415 | } | |
416 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
417 | (void **) &pSMB, (void **) &pSMBr); | |
418 | if (rc) | |
419 | return rc; | |
750d1151 SF |
420 | |
421 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 422 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 423 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 424 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 425 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 426 | |
b6b38f70 | 427 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 428 | |
88257360 | 429 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 430 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 431 | |
100c1ddc | 432 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 433 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 434 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 435 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 436 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 437 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
438 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
439 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 440 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
441 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
442 | } | |
50c2f753 | 443 | |
3979877e | 444 | count = 0; |
50c2f753 | 445 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
446 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
447 | count += strlen(protocols[i].name) + 1; | |
448 | /* null at end of source and target buffers anyway */ | |
449 | } | |
be8e3b00 | 450 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
451 | pSMB->ByteCount = cpu_to_le16(count); |
452 | ||
453 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
454 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 455 | if (rc != 0) |
254e55ed SF |
456 | goto neg_err_exit; |
457 | ||
9bf67e51 JL |
458 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
459 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 460 | /* Check wct = 1 error case */ |
9bf67e51 | 461 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 462 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 463 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
464 | could not negotiate a common dialect */ |
465 | rc = -EOPNOTSUPP; | |
466 | goto neg_err_exit; | |
50c2f753 | 467 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 468 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
469 | && ((server->dialect == LANMAN_PROT) |
470 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 471 | __s16 tmp; |
50c2f753 | 472 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 473 | |
790fe579 | 474 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 475 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
476 | server->secType = LANMAN; |
477 | else { | |
b6b38f70 JP |
478 | cERROR(1, "mount failed weak security disabled" |
479 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
480 | rc = -EOPNOTSUPP; |
481 | goto neg_err_exit; | |
50c2f753 | 482 | } |
96daf2b0 | 483 | server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode); |
10b9b98e PS |
484 | server->maxReq = min_t(unsigned int, |
485 | le16_to_cpu(rsp->MaxMpxCount), | |
486 | cifs_max_pending); | |
45275789 | 487 | set_credits(server, server->maxReq); |
c974befa | 488 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
eca6acf9 | 489 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
490 | /* even though we do not use raw we might as well set this |
491 | accurately, in case we ever find a need for it */ | |
790fe579 | 492 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 493 | server->max_rw = 0xFF00; |
254e55ed SF |
494 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
495 | } else { | |
eca6acf9 | 496 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
497 | server->capabilities = CAP_MPX_MODE; |
498 | } | |
b815f1e5 | 499 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 500 | if (tmp == -1) { |
25ee4a98 SF |
501 | /* OS/2 often does not set timezone therefore |
502 | * we must use server time to calc time zone. | |
b815f1e5 SF |
503 | * Could deviate slightly from the right zone. |
504 | * Smallest defined timezone difference is 15 minutes | |
505 | * (i.e. Nepal). Rounding up/down is done to match | |
506 | * this requirement. | |
25ee4a98 | 507 | */ |
b815f1e5 | 508 | int val, seconds, remain, result; |
25ee4a98 SF |
509 | struct timespec ts, utc; |
510 | utc = CURRENT_TIME; | |
c4a2c08d JL |
511 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
512 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 513 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 514 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 515 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 516 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 517 | seconds = abs(val); |
947a5067 | 518 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 519 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 520 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 521 | result += MIN_TZ_ADJ; |
790fe579 | 522 | if (val < 0) |
ad7a2926 | 523 | result = -result; |
b815f1e5 | 524 | server->timeAdj = result; |
25ee4a98 | 525 | } else { |
b815f1e5 SF |
526 | server->timeAdj = (int)tmp; |
527 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 528 | } |
b6b38f70 | 529 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 530 | |
3979877e | 531 | |
254e55ed | 532 | /* BB get server time for time conversions and add |
50c2f753 | 533 | code to use it and timezone since this is not UTC */ |
3979877e | 534 | |
50c2f753 | 535 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 536 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 537 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 538 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 539 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
540 | rc = -EIO; /* need cryptkey unless plain text */ |
541 | goto neg_err_exit; | |
542 | } | |
3979877e | 543 | |
f19159dc | 544 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
545 | /* we will not end up setting signing flags - as no signing |
546 | was in LANMAN and server did not return the flags on */ | |
547 | goto signing_check; | |
7c7b25bc | 548 | #else /* weak security disabled */ |
790fe579 | 549 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
550 | cERROR(1, "mount failed, cifs module not built " |
551 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 552 | rc = -EOPNOTSUPP; |
7c7b25bc | 553 | #endif /* WEAK_PW_HASH */ |
254e55ed | 554 | goto neg_err_exit; |
790fe579 | 555 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
556 | /* unknown wct */ |
557 | rc = -EOPNOTSUPP; | |
558 | goto neg_err_exit; | |
559 | } | |
560 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
561 | server->sec_mode = pSMBr->SecurityMode; |
562 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 563 | cFYI(1, "share mode security"); |
bdc4bf6e | 564 | |
96daf2b0 | 565 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 566 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 567 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 568 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
569 | cERROR(1, "Server requests plain text password" |
570 | " but client support disabled"); | |
9312f675 | 571 | |
790fe579 | 572 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 573 | server->secType = NTLMv2; |
790fe579 | 574 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 575 | server->secType = NTLM; |
790fe579 | 576 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 577 | server->secType = NTLMv2; |
a013689d SF |
578 | else if (secFlags & CIFSSEC_MAY_KRB5) |
579 | server->secType = Kerberos; | |
ac683924 | 580 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 581 | server->secType = RawNTLMSSP; |
a013689d SF |
582 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
583 | server->secType = LANMAN; | |
a013689d SF |
584 | else { |
585 | rc = -EOPNOTSUPP; | |
b6b38f70 | 586 | cERROR(1, "Invalid security type"); |
a013689d SF |
587 | goto neg_err_exit; |
588 | } | |
589 | /* else ... any others ...? */ | |
254e55ed SF |
590 | |
591 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
592 | little endian */ | |
10b9b98e PS |
593 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
594 | cifs_max_pending); | |
45275789 | 595 | set_credits(server, server->maxReq); |
254e55ed | 596 | /* probably no need to store and check maxvcs */ |
c974befa | 597 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 598 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 599 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 600 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
601 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
602 | server->timeAdj *= 60; | |
254e55ed | 603 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 604 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 605 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
606 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
607 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
608 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 609 | /* decode security blob */ |
820a803f | 610 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 611 | if (count < 16) { |
254e55ed | 612 | rc = -EIO; |
e187e44e JL |
613 | goto neg_err_exit; |
614 | } | |
3f9bcca7 | 615 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 616 | if (server->srv_count > 1) { |
3f9bcca7 | 617 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
618 | if (memcmp(server->server_GUID, |
619 | pSMBr->u.extended_response. | |
620 | GUID, 16) != 0) { | |
b6b38f70 | 621 | cFYI(1, "server UID changed"); |
254e55ed | 622 | memcpy(server->server_GUID, |
e187e44e JL |
623 | pSMBr->u.extended_response.GUID, |
624 | 16); | |
625 | } | |
e7ddee90 | 626 | } else { |
3f9bcca7 | 627 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
628 | memcpy(server->server_GUID, |
629 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 630 | } |
e187e44e JL |
631 | |
632 | if (count == 16) { | |
633 | server->secType = RawNTLMSSP; | |
254e55ed SF |
634 | } else { |
635 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
636 | SecurityBlob, count - 16, |
637 | server); | |
ef571cad | 638 | if (rc == 1) |
e545937a | 639 | rc = 0; |
ef571cad | 640 | else |
254e55ed | 641 | rc = -EINVAL; |
2b149f11 SP |
642 | if (server->secType == Kerberos) { |
643 | if (!server->sec_kerberos && | |
644 | !server->sec_mskerberos) | |
645 | rc = -EOPNOTSUPP; | |
646 | } else if (server->secType == RawNTLMSSP) { | |
647 | if (!server->sec_ntlmssp) | |
648 | rc = -EOPNOTSUPP; | |
649 | } else | |
650 | rc = -EOPNOTSUPP; | |
1da177e4 | 651 | } |
96daf2b0 | 652 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
653 | rc = -EIO; /* no crypt key only if plain text pwd */ |
654 | goto neg_err_exit; | |
254e55ed SF |
655 | } else |
656 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
657 | ||
6344a423 | 658 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 659 | signing_check: |
6344a423 | 660 | #endif |
762e5ab7 SF |
661 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
662 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
663 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 664 | cFYI(1, "Signing disabled"); |
96daf2b0 | 665 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 666 | cERROR(1, "Server requires " |
7111d214 | 667 | "packet signing to be enabled in " |
b6b38f70 | 668 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
669 | rc = -EOPNOTSUPP; |
670 | } | |
96daf2b0 | 671 | server->sec_mode &= |
254e55ed | 672 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
673 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
674 | /* signing required */ | |
b6b38f70 | 675 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 676 | if ((server->sec_mode & |
762e5ab7 | 677 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 678 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 679 | rc = -EOPNOTSUPP; |
762e5ab7 | 680 | } else |
96daf2b0 | 681 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
682 | } else { |
683 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
684 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
685 | server->sec_mode &= | |
254e55ed | 686 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 687 | } |
50c2f753 SF |
688 | |
689 | neg_err_exit: | |
4a6d87f1 | 690 | cifs_buf_release(pSMB); |
254e55ed | 691 | |
b6b38f70 | 692 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
693 | return rc; |
694 | } | |
695 | ||
696 | int | |
96daf2b0 | 697 | CIFSSMBTDis(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
698 | { |
699 | struct smb_hdr *smb_buffer; | |
1da177e4 | 700 | int rc = 0; |
1da177e4 | 701 | |
b6b38f70 | 702 | cFYI(1, "In tree disconnect"); |
1da177e4 | 703 | |
f1987b44 JL |
704 | /* BB: do we need to check this? These should never be NULL. */ |
705 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
706 | return -EIO; | |
1da177e4 | 707 | |
f1987b44 JL |
708 | /* |
709 | * No need to return error on this operation if tid invalidated and | |
710 | * closed on server already e.g. due to tcp session crashing. Also, | |
711 | * the tcon is no longer on the list, so no need to take lock before | |
712 | * checking this. | |
713 | */ | |
268875b9 | 714 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 715 | return 0; |
1da177e4 | 716 | |
50c2f753 | 717 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 718 | (void **)&smb_buffer); |
f1987b44 | 719 | if (rc) |
1da177e4 | 720 | return rc; |
133672ef | 721 | |
792af7b0 | 722 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 723 | if (rc) |
b6b38f70 | 724 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 725 | |
50c2f753 | 726 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 727 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
728 | if (rc == -EAGAIN) |
729 | rc = 0; | |
730 | ||
731 | return rc; | |
732 | } | |
733 | ||
766fdbb5 JL |
734 | /* |
735 | * This is a no-op for now. We're not really interested in the reply, but | |
736 | * rather in the fact that the server sent one and that server->lstrp | |
737 | * gets updated. | |
738 | * | |
739 | * FIXME: maybe we should consider checking that the reply matches request? | |
740 | */ | |
741 | static void | |
742 | cifs_echo_callback(struct mid_q_entry *mid) | |
743 | { | |
744 | struct TCP_Server_Info *server = mid->callback_data; | |
745 | ||
746 | DeleteMidQEntry(mid); | |
45275789 | 747 | add_credits(server, 1); |
766fdbb5 JL |
748 | } |
749 | ||
750 | int | |
751 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
752 | { | |
753 | ECHO_REQ *smb; | |
754 | int rc = 0; | |
fcc31cb6 | 755 | struct kvec iov; |
766fdbb5 JL |
756 | |
757 | cFYI(1, "In echo request"); | |
758 | ||
759 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
760 | if (rc) | |
761 | return rc; | |
762 | ||
763 | /* set up echo request */ | |
5443d130 | 764 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
765 | smb->hdr.WordCount = 1; |
766 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 767 | put_bcc(1, &smb->hdr); |
766fdbb5 | 768 | smb->Data[0] = 'a'; |
be8e3b00 | 769 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
770 | iov.iov_base = smb; |
771 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 772 | |
44d22d84 JL |
773 | rc = cifs_call_async(server, &iov, 1, NULL, cifs_echo_callback, |
774 | server, true); | |
766fdbb5 JL |
775 | if (rc) |
776 | cFYI(1, "Echo request failed: %d", rc); | |
777 | ||
778 | cifs_small_buf_release(smb); | |
779 | ||
780 | return rc; | |
781 | } | |
782 | ||
1da177e4 | 783 | int |
96daf2b0 | 784 | CIFSSMBLogoff(const int xid, struct cifs_ses *ses) |
1da177e4 | 785 | { |
1da177e4 LT |
786 | LOGOFF_ANDX_REQ *pSMB; |
787 | int rc = 0; | |
1da177e4 | 788 | |
b6b38f70 | 789 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 790 | |
14fbf50d JL |
791 | /* |
792 | * BB: do we need to check validity of ses and server? They should | |
793 | * always be valid since we have an active reference. If not, that | |
794 | * should probably be a BUG() | |
795 | */ | |
796 | if (!ses || !ses->server) | |
3b795210 SF |
797 | return -EIO; |
798 | ||
d7b619cf | 799 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
800 | if (ses->need_reconnect) |
801 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
802 | already closed due to reconnect */ | |
1da177e4 LT |
803 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
804 | if (rc) { | |
d7b619cf | 805 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
806 | return rc; |
807 | } | |
808 | ||
88257360 | 809 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 810 | |
96daf2b0 | 811 | if (ses->server->sec_mode & |
1da177e4 LT |
812 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
813 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
814 | |
815 | pSMB->hdr.Uid = ses->Suid; | |
816 | ||
817 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 818 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 819 | session_already_dead: |
d7b619cf | 820 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
821 | |
822 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 823 | since server closed smb session, no sense reporting |
1da177e4 LT |
824 | error */ |
825 | if (rc == -EAGAIN) | |
826 | rc = 0; | |
827 | return rc; | |
828 | } | |
829 | ||
2d785a50 | 830 | int |
96daf2b0 | 831 | CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
2d785a50 SF |
832 | __u16 type, const struct nls_table *nls_codepage, int remap) |
833 | { | |
834 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
835 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
836 | struct unlink_psx_rq *pRqD; | |
837 | int name_len; | |
838 | int rc = 0; | |
839 | int bytes_returned = 0; | |
840 | __u16 params, param_offset, offset, byte_count; | |
841 | ||
b6b38f70 | 842 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
843 | PsxDelete: |
844 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
845 | (void **) &pSMBr); | |
846 | if (rc) | |
847 | return rc; | |
848 | ||
849 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
850 | name_len = | |
acbbb76a SF |
851 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
852 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
853 | name_len++; /* trailing null */ |
854 | name_len *= 2; | |
855 | } else { /* BB add path length overrun check */ | |
856 | name_len = strnlen(fileName, PATH_MAX); | |
857 | name_len++; /* trailing null */ | |
858 | strncpy(pSMB->FileName, fileName, name_len); | |
859 | } | |
860 | ||
861 | params = 6 + name_len; | |
862 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
863 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
864 | pSMB->MaxSetupCount = 0; | |
865 | pSMB->Reserved = 0; | |
866 | pSMB->Flags = 0; | |
867 | pSMB->Timeout = 0; | |
868 | pSMB->Reserved2 = 0; | |
869 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
870 | InformationLevel) - 4; | |
871 | offset = param_offset + params; | |
872 | ||
873 | /* Setup pointer to Request Data (inode type) */ | |
874 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
875 | pRqD->type = cpu_to_le16(type); | |
876 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
877 | pSMB->DataOffset = cpu_to_le16(offset); | |
878 | pSMB->SetupCount = 1; | |
879 | pSMB->Reserved3 = 0; | |
880 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
881 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
882 | ||
883 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
884 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
885 | pSMB->ParameterCount = cpu_to_le16(params); | |
886 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
887 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
888 | pSMB->Reserved4 = 0; | |
be8e3b00 | 889 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
890 | pSMB->ByteCount = cpu_to_le16(byte_count); |
891 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
892 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 893 | if (rc) |
b6b38f70 | 894 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
895 | cifs_buf_release(pSMB); |
896 | ||
897 | cifs_stats_inc(&tcon->num_deletes); | |
898 | ||
899 | if (rc == -EAGAIN) | |
900 | goto PsxDelete; | |
901 | ||
902 | return rc; | |
903 | } | |
904 | ||
1da177e4 | 905 | int |
96daf2b0 | 906 | CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
737b758c | 907 | const struct nls_table *nls_codepage, 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); | |
a4544347 | 939 | cifs_stats_inc(&tcon->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 | |
96daf2b0 | 951 | CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName, |
737b758c | 952 | const struct nls_table *nls_codepage, int remap) |
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; | |
959 | ||
b6b38f70 | 960 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
961 | RmDirRetry: |
962 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
963 | (void **) &pSMBr); | |
964 | if (rc) | |
965 | return rc; | |
966 | ||
967 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
968 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, dirName, |
969 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
970 | name_len++; /* trailing null */ |
971 | name_len *= 2; | |
09d1db5c | 972 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
973 | name_len = strnlen(dirName, PATH_MAX); |
974 | name_len++; /* trailing null */ | |
975 | strncpy(pSMB->DirName, dirName, name_len); | |
976 | } | |
977 | ||
978 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 979 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
980 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
981 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
982 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 983 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 984 | if (rc) |
b6b38f70 | 985 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
986 | |
987 | cifs_buf_release(pSMB); | |
988 | if (rc == -EAGAIN) | |
989 | goto RmDirRetry; | |
990 | return rc; | |
991 | } | |
992 | ||
993 | int | |
96daf2b0 | 994 | CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon, |
737b758c | 995 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
996 | { |
997 | int rc = 0; | |
998 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
999 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
1000 | int bytes_returned; | |
1001 | int name_len; | |
1002 | ||
b6b38f70 | 1003 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
1004 | MkDirRetry: |
1005 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1006 | (void **) &pSMBr); | |
1007 | if (rc) | |
1008 | return rc; | |
1009 | ||
1010 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
1011 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
1012 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1013 | name_len++; /* trailing null */ |
1014 | name_len *= 2; | |
09d1db5c | 1015 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1016 | name_len = strnlen(name, PATH_MAX); |
1017 | name_len++; /* trailing null */ | |
1018 | strncpy(pSMB->DirName, name, name_len); | |
1019 | } | |
1020 | ||
1021 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 1022 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1023 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1024 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1025 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1026 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 1027 | if (rc) |
b6b38f70 | 1028 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 1029 | |
1da177e4 LT |
1030 | cifs_buf_release(pSMB); |
1031 | if (rc == -EAGAIN) | |
1032 | goto MkDirRetry; | |
1033 | return rc; | |
1034 | } | |
1035 | ||
2dd29d31 | 1036 | int |
96daf2b0 | 1037 | CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags, |
ad7a2926 | 1038 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1039 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1040 | const struct nls_table *nls_codepage, int remap) |
1041 | { | |
1042 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1043 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1044 | int name_len; | |
1045 | int rc = 0; | |
1046 | int bytes_returned = 0; | |
2dd29d31 | 1047 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1048 | OPEN_PSX_REQ *pdata; |
1049 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1050 | |
b6b38f70 | 1051 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1052 | PsxCreat: |
1053 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1054 | (void **) &pSMBr); | |
1055 | if (rc) | |
1056 | return rc; | |
1057 | ||
1058 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1059 | name_len = | |
acbbb76a SF |
1060 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1061 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1062 | name_len++; /* trailing null */ |
1063 | name_len *= 2; | |
1064 | } else { /* BB improve the check for buffer overruns BB */ | |
1065 | name_len = strnlen(name, PATH_MAX); | |
1066 | name_len++; /* trailing null */ | |
1067 | strncpy(pSMB->FileName, name, name_len); | |
1068 | } | |
1069 | ||
1070 | params = 6 + name_len; | |
1071 | count = sizeof(OPEN_PSX_REQ); | |
1072 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1073 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1074 | pSMB->MaxSetupCount = 0; | |
1075 | pSMB->Reserved = 0; | |
1076 | pSMB->Flags = 0; | |
1077 | pSMB->Timeout = 0; | |
1078 | pSMB->Reserved2 = 0; | |
1079 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1080 | InformationLevel) - 4; |
2dd29d31 | 1081 | offset = param_offset + params; |
2dd29d31 | 1082 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1083 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1084 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1085 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1086 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1087 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1088 | pSMB->DataOffset = cpu_to_le16(offset); | |
1089 | pSMB->SetupCount = 1; | |
1090 | pSMB->Reserved3 = 0; | |
1091 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1092 | byte_count = 3 /* pad */ + params + count; | |
1093 | ||
1094 | pSMB->DataCount = cpu_to_le16(count); | |
1095 | pSMB->ParameterCount = cpu_to_le16(params); | |
1096 | pSMB->TotalDataCount = pSMB->DataCount; | |
1097 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1098 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1099 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1100 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1101 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1102 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1103 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1104 | if (rc) { | |
b6b38f70 | 1105 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1106 | goto psx_create_err; |
1107 | } | |
1108 | ||
b6b38f70 | 1109 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1110 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1111 | ||
820a803f | 1112 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1113 | rc = -EIO; /* bad smb */ |
1114 | goto psx_create_err; | |
1115 | } | |
1116 | ||
1117 | /* copy return information to pRetData */ | |
50c2f753 | 1118 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1119 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1120 | |
2dd29d31 | 1121 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1122 | if (netfid) |
2dd29d31 SF |
1123 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1124 | /* Let caller know file was created so we can set the mode. */ | |
1125 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1126 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1127 | *pOplock |= CIFS_CREATE_ACTION; |
1128 | /* check to make sure response data is there */ | |
8f2376ad CG |
1129 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1130 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1131 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1132 | } else { |
820a803f | 1133 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1134 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1135 | cERROR(1, "Open response data too small"); |
8f2376ad | 1136 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1137 | goto psx_create_err; |
1138 | } | |
50c2f753 | 1139 | memcpy((char *) pRetData, |
cbac3cba | 1140 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1141 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1142 | } |
2dd29d31 SF |
1143 | |
1144 | psx_create_err: | |
1145 | cifs_buf_release(pSMB); | |
1146 | ||
65bc98b0 SF |
1147 | if (posix_flags & SMB_O_DIRECTORY) |
1148 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1149 | else | |
1150 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1151 | |
1152 | if (rc == -EAGAIN) | |
1153 | goto PsxCreat; | |
1154 | ||
50c2f753 | 1155 | return rc; |
2dd29d31 SF |
1156 | } |
1157 | ||
a9d02ad4 SF |
1158 | static __u16 convert_disposition(int disposition) |
1159 | { | |
1160 | __u16 ofun = 0; | |
1161 | ||
1162 | switch (disposition) { | |
1163 | case FILE_SUPERSEDE: | |
1164 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1165 | break; | |
1166 | case FILE_OPEN: | |
1167 | ofun = SMBOPEN_OAPPEND; | |
1168 | break; | |
1169 | case FILE_CREATE: | |
1170 | ofun = SMBOPEN_OCREATE; | |
1171 | break; | |
1172 | case FILE_OPEN_IF: | |
1173 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1174 | break; | |
1175 | case FILE_OVERWRITE: | |
1176 | ofun = SMBOPEN_OTRUNC; | |
1177 | break; | |
1178 | case FILE_OVERWRITE_IF: | |
1179 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1180 | break; | |
1181 | default: | |
b6b38f70 | 1182 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1183 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1184 | } | |
1185 | return ofun; | |
1186 | } | |
1187 | ||
35fc37d5 JL |
1188 | static int |
1189 | access_flags_to_smbopen_mode(const int access_flags) | |
1190 | { | |
1191 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1192 | ||
1193 | if (masked_flags == GENERIC_READ) | |
1194 | return SMBOPEN_READ; | |
1195 | else if (masked_flags == GENERIC_WRITE) | |
1196 | return SMBOPEN_WRITE; | |
1197 | ||
1198 | /* just go for read/write */ | |
1199 | return SMBOPEN_READWRITE; | |
1200 | } | |
1201 | ||
a9d02ad4 | 1202 | int |
96daf2b0 | 1203 | SMBLegacyOpen(const int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1204 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1205 | const int access_flags, const int create_options, __u16 *netfid, |
1206 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1207 | const struct nls_table *nls_codepage, int remap) |
1208 | { | |
1209 | int rc = -EACCES; | |
1210 | OPENX_REQ *pSMB = NULL; | |
1211 | OPENX_RSP *pSMBr = NULL; | |
1212 | int bytes_returned; | |
1213 | int name_len; | |
1214 | __u16 count; | |
1215 | ||
1216 | OldOpenRetry: | |
1217 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1218 | (void **) &pSMBr); | |
1219 | if (rc) | |
1220 | return rc; | |
1221 | ||
1222 | pSMB->AndXCommand = 0xFF; /* none */ | |
1223 | ||
1224 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1225 | count = 1; /* account for one byte pad to word boundary */ | |
1226 | name_len = | |
acbbb76a SF |
1227 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1228 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1229 | name_len++; /* trailing null */ |
1230 | name_len *= 2; | |
1231 | } else { /* BB improve check for buffer overruns BB */ | |
1232 | count = 0; /* no pad */ | |
1233 | name_len = strnlen(fileName, PATH_MAX); | |
1234 | name_len++; /* trailing null */ | |
1235 | strncpy(pSMB->fileName, fileName, name_len); | |
1236 | } | |
1237 | if (*pOplock & REQ_OPLOCK) | |
1238 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1239 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1240 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1241 | |
a9d02ad4 | 1242 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1243 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1244 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1245 | /* set file as system file if special file such | |
1246 | as fifo and server expecting SFU style and | |
1247 | no Unix extensions */ | |
1248 | ||
790fe579 SF |
1249 | if (create_options & CREATE_OPTION_SPECIAL) |
1250 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1251 | else /* BB FIXME BB */ |
1252 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1253 | |
67750fb9 JL |
1254 | if (create_options & CREATE_OPTION_READONLY) |
1255 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1256 | |
1257 | /* BB FIXME BB */ | |
50c2f753 SF |
1258 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1259 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1260 | /* BB FIXME END BB */ |
3e87d803 SF |
1261 | |
1262 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1263 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1264 | count += name_len; |
be8e3b00 | 1265 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1266 | |
1267 | pSMB->ByteCount = cpu_to_le16(count); | |
1268 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1269 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1270 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1271 | cifs_stats_inc(&tcon->num_opens); |
1272 | if (rc) { | |
b6b38f70 | 1273 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1274 | } else { |
1275 | /* BB verify if wct == 15 */ | |
1276 | ||
582d21e5 | 1277 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1278 | |
1279 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1280 | /* Let caller know file was created so we can set the mode. */ | |
1281 | /* Do we care about the CreateAction in any other cases? */ | |
1282 | /* BB FIXME BB */ | |
790fe579 | 1283 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1284 | *pOplock |= CIFS_CREATE_ACTION; */ |
1285 | /* BB FIXME END */ | |
1286 | ||
790fe579 | 1287 | if (pfile_info) { |
a9d02ad4 SF |
1288 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1289 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1290 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1291 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1292 | pfile_info->Attributes = |
50c2f753 | 1293 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1294 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1295 | pfile_info->AllocationSize = |
1296 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1297 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1298 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1299 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1300 | } |
1301 | } | |
1302 | ||
1303 | cifs_buf_release(pSMB); | |
1304 | if (rc == -EAGAIN) | |
1305 | goto OldOpenRetry; | |
1306 | return rc; | |
1307 | } | |
1308 | ||
1da177e4 | 1309 | int |
96daf2b0 | 1310 | CIFSSMBOpen(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 1311 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1312 | const int access_flags, const int create_options, __u16 *netfid, |
1313 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1314 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1315 | { |
1316 | int rc = -EACCES; | |
1317 | OPEN_REQ *pSMB = NULL; | |
1318 | OPEN_RSP *pSMBr = NULL; | |
1319 | int bytes_returned; | |
1320 | int name_len; | |
1321 | __u16 count; | |
1322 | ||
1323 | openRetry: | |
1324 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1325 | (void **) &pSMBr); | |
1326 | if (rc) | |
1327 | return rc; | |
1328 | ||
1329 | pSMB->AndXCommand = 0xFF; /* none */ | |
1330 | ||
1331 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1332 | count = 1; /* account for one byte pad to word boundary */ | |
1333 | name_len = | |
acbbb76a SF |
1334 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1335 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1336 | name_len++; /* trailing null */ |
1337 | name_len *= 2; | |
1338 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1339 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1340 | count = 0; /* no pad */ |
1341 | name_len = strnlen(fileName, PATH_MAX); | |
1342 | name_len++; /* trailing null */ | |
1343 | pSMB->NameLength = cpu_to_le16(name_len); | |
1344 | strncpy(pSMB->fileName, fileName, name_len); | |
1345 | } | |
1346 | if (*pOplock & REQ_OPLOCK) | |
1347 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1348 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1349 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1350 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1351 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1352 | /* set file as system file if special file such |
1353 | as fifo and server expecting SFU style and | |
1354 | no Unix extensions */ | |
790fe579 | 1355 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1356 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1357 | else | |
1358 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1359 | |
1da177e4 LT |
1360 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1361 | /* but it helps speed up case sensitive checks for other | |
1362 | servers such as Samba */ | |
1363 | if (tcon->ses->capabilities & CAP_UNIX) | |
1364 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1365 | ||
67750fb9 JL |
1366 | if (create_options & CREATE_OPTION_READONLY) |
1367 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1368 | ||
1da177e4 LT |
1369 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1370 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1371 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1372 | /* BB Expirement with various impersonation levels and verify */ |
1373 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1374 | pSMB->SecurityFlags = |
1375 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1376 | ||
1377 | count += name_len; | |
be8e3b00 | 1378 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1379 | |
1380 | pSMB->ByteCount = cpu_to_le16(count); | |
1381 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1382 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1383 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1384 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1385 | if (rc) { |
b6b38f70 | 1386 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1387 | } else { |
09d1db5c | 1388 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1389 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1390 | /* Let caller know file was created so we can set the mode. */ | |
1391 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1392 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1393 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1394 | if (pfile_info) { |
61e74801 SF |
1395 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1396 | 36 /* CreationTime to Attributes */); | |
1397 | /* the file_info buf is endian converted by caller */ | |
1398 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1399 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1400 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1401 | pfile_info->DeletePending = 0; | |
1da177e4 | 1402 | } |
1da177e4 | 1403 | } |
a5a2b489 | 1404 | |
1da177e4 LT |
1405 | cifs_buf_release(pSMB); |
1406 | if (rc == -EAGAIN) | |
1407 | goto openRetry; | |
1408 | return rc; | |
1409 | } | |
1410 | ||
e28bc5b1 JL |
1411 | /* |
1412 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1413 | * current bigbuf. | |
1414 | */ | |
1415 | static int | |
1416 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1417 | { | |
5ffef7bf | 1418 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1419 | int remaining = rfclen + 4 - server->total_read; |
1420 | struct cifs_readdata *rdata = mid->callback_data; | |
1421 | ||
1422 | while (remaining > 0) { | |
1423 | int length; | |
1424 | ||
1425 | length = cifs_read_from_socket(server, server->bigbuf, | |
1426 | min_t(unsigned int, remaining, | |
1887f601 | 1427 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1428 | if (length < 0) |
1429 | return length; | |
1430 | server->total_read += length; | |
1431 | remaining -= length; | |
1432 | } | |
1433 | ||
1434 | dequeue_mid(mid, rdata->result); | |
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | static int | |
1439 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1440 | { | |
1441 | int length, len; | |
8d5ce4d2 | 1442 | unsigned int data_offset, data_len; |
e28bc5b1 | 1443 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1444 | char *buf = server->smallbuf; |
1445 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1446 | |
7c9421e1 | 1447 | cFYI(1, "%s: mid=%llu offset=%llu bytes=%u", __func__, |
e28bc5b1 JL |
1448 | mid->mid, rdata->offset, rdata->bytes); |
1449 | ||
1450 | /* | |
1451 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1452 | * can if there's not enough data. At this point, we've read down to | |
1453 | * the Mid. | |
1454 | */ | |
eb378711 | 1455 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1456 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1457 | |
1887f601 | 1458 | rdata->iov[0].iov_base = buf + HEADER_SIZE(server) - 1; |
e28bc5b1 JL |
1459 | rdata->iov[0].iov_len = len; |
1460 | ||
1461 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1462 | if (length < 0) | |
1463 | return length; | |
1464 | server->total_read += length; | |
1465 | ||
1466 | /* Was the SMB read successful? */ | |
eb378711 | 1467 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 JL |
1468 | if (rdata->result != 0) { |
1469 | cFYI(1, "%s: server returned error %d", __func__, | |
1470 | rdata->result); | |
1471 | return cifs_readv_discard(server, mid); | |
1472 | } | |
1473 | ||
1474 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1475 | if (server->total_read < server->vals->read_rsp_size) { |
e28bc5b1 | 1476 | cFYI(1, "%s: server returned short header. got=%u expected=%zu", |
eb378711 PS |
1477 | __func__, server->total_read, |
1478 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1479 | rdata->result = -EIO; |
1480 | return cifs_readv_discard(server, mid); | |
1481 | } | |
1482 | ||
eb378711 | 1483 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1484 | if (data_offset < server->total_read) { |
1485 | /* | |
1486 | * win2k8 sometimes sends an offset of 0 when the read | |
1487 | * is beyond the EOF. Treat it as if the data starts just after | |
1488 | * the header. | |
1489 | */ | |
1490 | cFYI(1, "%s: data offset (%u) inside read response header", | |
1491 | __func__, data_offset); | |
1492 | data_offset = server->total_read; | |
1493 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1494 | /* data_offset is beyond the end of smallbuf */ | |
1495 | cFYI(1, "%s: data offset (%u) beyond end of smallbuf", | |
1496 | __func__, data_offset); | |
1497 | rdata->result = -EIO; | |
1498 | return cifs_readv_discard(server, mid); | |
1499 | } | |
1500 | ||
1501 | cFYI(1, "%s: total_read=%u data_offset=%u", __func__, | |
1502 | server->total_read, data_offset); | |
1503 | ||
1504 | len = data_offset - server->total_read; | |
1505 | if (len > 0) { | |
1506 | /* read any junk before data into the rest of smallbuf */ | |
5ffef7bf | 1507 | rdata->iov[0].iov_base = buf + server->total_read; |
e28bc5b1 JL |
1508 | rdata->iov[0].iov_len = len; |
1509 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1510 | if (length < 0) | |
1511 | return length; | |
1512 | server->total_read += length; | |
1513 | } | |
1514 | ||
1515 | /* set up first iov for signature check */ | |
5ffef7bf | 1516 | rdata->iov[0].iov_base = buf; |
e28bc5b1 JL |
1517 | rdata->iov[0].iov_len = server->total_read; |
1518 | cFYI(1, "0: iov_base=%p iov_len=%zu", | |
1519 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
1520 | ||
1521 | /* how much data is in the response? */ | |
eb378711 | 1522 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1523 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1524 | /* data_len is corrupt -- discard frame */ |
1525 | rdata->result = -EIO; | |
1526 | return cifs_readv_discard(server, mid); | |
1527 | } | |
1528 | ||
1529 | /* marshal up the page array */ | |
3cf003c0 | 1530 | cifs_kmap_lock(); |
8d5ce4d2 | 1531 | len = rdata->marshal_iov(rdata, data_len); |
3cf003c0 | 1532 | cifs_kmap_unlock(); |
8d5ce4d2 | 1533 | data_len -= len; |
e28bc5b1 JL |
1534 | |
1535 | /* issue the read if we have any iovecs left to fill */ | |
1536 | if (rdata->nr_iov > 1) { | |
1537 | length = cifs_readv_from_socket(server, &rdata->iov[1], | |
1538 | rdata->nr_iov - 1, len); | |
1539 | if (length < 0) | |
1540 | return length; | |
1541 | server->total_read += length; | |
1542 | } else { | |
1543 | length = 0; | |
1544 | } | |
1545 | ||
1546 | rdata->bytes = length; | |
1547 | ||
5ffef7bf | 1548 | cFYI(1, "total_read=%u buflen=%u remaining=%u", server->total_read, |
8d5ce4d2 | 1549 | buflen, data_len); |
e28bc5b1 JL |
1550 | |
1551 | /* discard anything left over */ | |
5ffef7bf | 1552 | if (server->total_read < buflen) |
e28bc5b1 JL |
1553 | return cifs_readv_discard(server, mid); |
1554 | ||
1555 | dequeue_mid(mid, false); | |
1556 | return length; | |
1557 | } | |
1558 | ||
e28bc5b1 JL |
1559 | static void |
1560 | cifs_readv_callback(struct mid_q_entry *mid) | |
1561 | { | |
1562 | struct cifs_readdata *rdata = mid->callback_data; | |
1563 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1564 | struct TCP_Server_Info *server = tcon->ses->server; | |
1565 | ||
7c9421e1 PS |
1566 | cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__, |
1567 | mid->mid, mid->mid_state, rdata->result, rdata->bytes); | |
e28bc5b1 | 1568 | |
7c9421e1 | 1569 | switch (mid->mid_state) { |
e28bc5b1 JL |
1570 | case MID_RESPONSE_RECEIVED: |
1571 | /* result already set, check signature */ | |
1572 | if (server->sec_mode & | |
1573 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { | |
1574 | if (cifs_verify_signature(rdata->iov, rdata->nr_iov, | |
1575 | server, mid->sequence_number + 1)) | |
1576 | cERROR(1, "Unexpected SMB signature"); | |
1577 | } | |
1578 | /* FIXME: should this be counted toward the initiating task? */ | |
1579 | task_io_account_read(rdata->bytes); | |
1580 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1581 | break; | |
1582 | case MID_REQUEST_SUBMITTED: | |
1583 | case MID_RETRY_NEEDED: | |
1584 | rdata->result = -EAGAIN; | |
1585 | break; | |
1586 | default: | |
1587 | rdata->result = -EIO; | |
1588 | } | |
1589 | ||
da472fc8 | 1590 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1591 | DeleteMidQEntry(mid); |
45275789 | 1592 | add_credits(server, 1); |
e28bc5b1 JL |
1593 | } |
1594 | ||
1595 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1596 | int | |
1597 | cifs_async_readv(struct cifs_readdata *rdata) | |
1598 | { | |
1599 | int rc; | |
1600 | READ_REQ *smb = NULL; | |
1601 | int wct; | |
1602 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1603 | ||
1604 | cFYI(1, "%s: offset=%llu bytes=%u", __func__, | |
1605 | rdata->offset, rdata->bytes); | |
1606 | ||
1607 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1608 | wct = 12; | |
1609 | else { | |
1610 | wct = 10; /* old style read */ | |
1611 | if ((rdata->offset >> 32) > 0) { | |
1612 | /* can not handle this big offset for old */ | |
1613 | return -EIO; | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1618 | if (rc) | |
1619 | return rc; | |
1620 | ||
1621 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1622 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1623 | ||
1624 | smb->AndXCommand = 0xFF; /* none */ | |
1625 | smb->Fid = rdata->cfile->netfid; | |
1626 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); | |
1627 | if (wct == 12) | |
1628 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1629 | smb->Remaining = 0; | |
1630 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1631 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1632 | if (wct == 12) | |
1633 | smb->ByteCount = 0; | |
1634 | else { | |
1635 | /* old style read */ | |
1636 | struct smb_com_readx_req *smbr = | |
1637 | (struct smb_com_readx_req *)smb; | |
1638 | smbr->ByteCount = 0; | |
1639 | } | |
1640 | ||
1641 | /* 4 for RFC1001 length + 1 for BCC */ | |
1642 | rdata->iov[0].iov_base = smb; | |
1643 | rdata->iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
1644 | ||
6993f74a | 1645 | kref_get(&rdata->refcount); |
e28bc5b1 JL |
1646 | rc = cifs_call_async(tcon->ses->server, rdata->iov, 1, |
1647 | cifs_readv_receive, cifs_readv_callback, | |
1648 | rdata, false); | |
1649 | ||
1650 | if (rc == 0) | |
1651 | cifs_stats_inc(&tcon->num_reads); | |
6993f74a JL |
1652 | else |
1653 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1654 | |
1655 | cifs_small_buf_release(smb); | |
1656 | return rc; | |
1657 | } | |
1658 | ||
1da177e4 | 1659 | int |
d4ffff1f | 1660 | CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, |
50c2f753 | 1661 | char **buf, int *pbuf_type) |
1da177e4 LT |
1662 | { |
1663 | int rc = -EACCES; | |
1664 | READ_REQ *pSMB = NULL; | |
1665 | READ_RSP *pSMBr = NULL; | |
1666 | char *pReadData = NULL; | |
bfa0d75a | 1667 | int wct; |
ec637e3f SF |
1668 | int resp_buf_type = 0; |
1669 | struct kvec iov[1]; | |
d4ffff1f PS |
1670 | __u32 pid = io_parms->pid; |
1671 | __u16 netfid = io_parms->netfid; | |
1672 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1673 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1674 | unsigned int count = io_parms->length; |
1da177e4 | 1675 | |
b6b38f70 | 1676 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1677 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1678 | wct = 12; |
4c3130ef | 1679 | else { |
bfa0d75a | 1680 | wct = 10; /* old style read */ |
d4ffff1f | 1681 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1682 | /* can not handle this big offset for old */ |
1683 | return -EIO; | |
1684 | } | |
1685 | } | |
1da177e4 LT |
1686 | |
1687 | *nbytes = 0; | |
ec637e3f | 1688 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1689 | if (rc) |
1690 | return rc; | |
1691 | ||
d4ffff1f PS |
1692 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1693 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1694 | ||
1da177e4 LT |
1695 | /* tcon and ses pointer are checked in smb_init */ |
1696 | if (tcon->ses->server == NULL) | |
1697 | return -ECONNABORTED; | |
1698 | ||
ec637e3f | 1699 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1700 | pSMB->Fid = netfid; |
d4ffff1f | 1701 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1702 | if (wct == 12) |
d4ffff1f | 1703 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1704 | |
1da177e4 LT |
1705 | pSMB->Remaining = 0; |
1706 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1707 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1708 | if (wct == 12) |
bfa0d75a SF |
1709 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1710 | else { | |
1711 | /* old style read */ | |
50c2f753 | 1712 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1713 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1714 | pSMBW->ByteCount = 0; |
bfa0d75a | 1715 | } |
ec637e3f SF |
1716 | |
1717 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1718 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1719 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1720 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1721 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1722 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1723 | if (rc) { |
b6b38f70 | 1724 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1725 | } else { |
1726 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1727 | data_length = data_length << 16; | |
1728 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1729 | *nbytes = data_length; | |
1730 | ||
1731 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1732 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1733 | || (data_length > count)) { |
b6b38f70 JP |
1734 | cFYI(1, "bad length %d for count %d", |
1735 | data_length, count); | |
1da177e4 LT |
1736 | rc = -EIO; |
1737 | *nbytes = 0; | |
1738 | } else { | |
ec637e3f | 1739 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1740 | le16_to_cpu(pSMBr->DataOffset); |
1741 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1742 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1743 | rc = -EFAULT; |
26f57364 | 1744 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1745 | if (*buf) |
50c2f753 | 1746 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1747 | } |
1748 | } | |
1da177e4 | 1749 | |
4b8f930f | 1750 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1751 | if (*buf) { |
1752 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1753 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1754 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1755 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1756 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1757 | /* return buffer to caller to free */ |
1758 | *buf = iov[0].iov_base; | |
790fe579 | 1759 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1760 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1761 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1762 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1763 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1764 | |
1765 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1766 | since file handle passed in no longer valid */ |
1767 | return rc; | |
1768 | } | |
1769 | ||
ec637e3f | 1770 | |
1da177e4 | 1771 | int |
fa2989f4 PS |
1772 | CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, |
1773 | unsigned int *nbytes, const char *buf, | |
50c2f753 | 1774 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1775 | { |
1776 | int rc = -EACCES; | |
1777 | WRITE_REQ *pSMB = NULL; | |
1778 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1779 | int bytes_returned, wct; |
1da177e4 LT |
1780 | __u32 bytes_sent; |
1781 | __u16 byte_count; | |
fa2989f4 PS |
1782 | __u32 pid = io_parms->pid; |
1783 | __u16 netfid = io_parms->netfid; | |
1784 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1785 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1786 | unsigned int count = io_parms->length; |
1da177e4 | 1787 | |
a24e2d7d SF |
1788 | *nbytes = 0; |
1789 | ||
b6b38f70 | 1790 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1791 | if (tcon->ses == NULL) |
1c955187 SF |
1792 | return -ECONNABORTED; |
1793 | ||
790fe579 | 1794 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1795 | wct = 14; |
4c3130ef | 1796 | else { |
1c955187 | 1797 | wct = 12; |
4c3130ef SF |
1798 | if ((offset >> 32) > 0) { |
1799 | /* can not handle big offset for old srv */ | |
1800 | return -EIO; | |
1801 | } | |
1802 | } | |
1c955187 SF |
1803 | |
1804 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1805 | (void **) &pSMBr); |
1806 | if (rc) | |
1807 | return rc; | |
fa2989f4 PS |
1808 | |
1809 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1810 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1811 | ||
1da177e4 LT |
1812 | /* tcon and ses pointer are checked in smb_init */ |
1813 | if (tcon->ses->server == NULL) | |
1814 | return -ECONNABORTED; | |
1815 | ||
1816 | pSMB->AndXCommand = 0xFF; /* none */ | |
1817 | pSMB->Fid = netfid; | |
1818 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1819 | if (wct == 14) |
1c955187 | 1820 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1821 | |
1da177e4 LT |
1822 | pSMB->Reserved = 0xFFFFFFFF; |
1823 | pSMB->WriteMode = 0; | |
1824 | pSMB->Remaining = 0; | |
1825 | ||
50c2f753 | 1826 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1827 | can send more if LARGE_WRITE_X capability returned by the server and if |
1828 | our buffer is big enough or if we convert to iovecs on socket writes | |
1829 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1830 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1831 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1832 | } else { | |
1833 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1834 | & ~0xFF; | |
1835 | } | |
1836 | ||
1837 | if (bytes_sent > count) | |
1838 | bytes_sent = count; | |
1839 | pSMB->DataOffset = | |
50c2f753 | 1840 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1841 | if (buf) |
61e74801 | 1842 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1843 | else if (ubuf) { |
1844 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1845 | cifs_buf_release(pSMB); |
1846 | return -EFAULT; | |
1847 | } | |
e30dcf3a | 1848 | } else if (count != 0) { |
1da177e4 LT |
1849 | /* No buffer */ |
1850 | cifs_buf_release(pSMB); | |
1851 | return -EINVAL; | |
e30dcf3a | 1852 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1853 | if (wct == 14) |
e30dcf3a | 1854 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1855 | else /* wct == 12 */ |
e30dcf3a | 1856 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1857 | |
1da177e4 LT |
1858 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1859 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1860 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1861 | |
790fe579 | 1862 | if (wct == 14) |
1c955187 | 1863 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1864 | else { /* old style write has byte count 4 bytes earlier |
1865 | so 4 bytes pad */ | |
1866 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1867 | (struct smb_com_writex_req *)pSMB; |
1868 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1869 | } | |
1da177e4 LT |
1870 | |
1871 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1872 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1873 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1874 | if (rc) { |
f19159dc | 1875 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1876 | } else { |
1877 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1878 | *nbytes = (*nbytes) << 16; | |
1879 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1880 | |
1881 | /* | |
1882 | * Mask off high 16 bits when bytes written as returned by the | |
1883 | * server is greater than bytes requested by the client. Some | |
1884 | * OS/2 servers are known to set incorrect CountHigh values. | |
1885 | */ | |
1886 | if (*nbytes > count) | |
1887 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1888 | } |
1889 | ||
1890 | cifs_buf_release(pSMB); | |
1891 | ||
50c2f753 | 1892 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1893 | since file handle passed in no longer valid */ |
1894 | ||
1895 | return rc; | |
1896 | } | |
1897 | ||
c28c89fc JL |
1898 | void |
1899 | cifs_writedata_release(struct kref *refcount) | |
1900 | { | |
1901 | struct cifs_writedata *wdata = container_of(refcount, | |
1902 | struct cifs_writedata, refcount); | |
1903 | ||
1904 | if (wdata->cfile) | |
1905 | cifsFileInfo_put(wdata->cfile); | |
1906 | ||
1907 | kfree(wdata); | |
1908 | } | |
1909 | ||
1910 | /* | |
1911 | * Write failed with a retryable error. Resend the write request. It's also | |
1912 | * possible that the page was redirtied so re-clean the page. | |
1913 | */ | |
1914 | static void | |
1915 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1916 | { | |
1917 | int i, rc; | |
1918 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1919 | ||
1920 | for (i = 0; i < wdata->nr_pages; i++) { | |
1921 | lock_page(wdata->pages[i]); | |
1922 | clear_page_dirty_for_io(wdata->pages[i]); | |
1923 | } | |
1924 | ||
1925 | do { | |
1926 | rc = cifs_async_writev(wdata); | |
1927 | } while (rc == -EAGAIN); | |
1928 | ||
1929 | for (i = 0; i < wdata->nr_pages; i++) { | |
1930 | if (rc != 0) | |
1931 | SetPageError(wdata->pages[i]); | |
1932 | unlock_page(wdata->pages[i]); | |
1933 | } | |
1934 | ||
1935 | mapping_set_error(inode->i_mapping, rc); | |
1936 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1937 | } | |
1938 | ||
c2e87640 | 1939 | void |
c28c89fc JL |
1940 | cifs_writev_complete(struct work_struct *work) |
1941 | { | |
1942 | struct cifs_writedata *wdata = container_of(work, | |
1943 | struct cifs_writedata, work); | |
1944 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1945 | int i = 0; | |
1946 | ||
1947 | if (wdata->result == 0) { | |
597b027f | 1948 | spin_lock(&inode->i_lock); |
c28c89fc | 1949 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1950 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1951 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1952 | wdata->bytes); | |
1953 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1954 | return cifs_writev_requeue(wdata); | |
1955 | ||
1956 | for (i = 0; i < wdata->nr_pages; i++) { | |
1957 | struct page *page = wdata->pages[i]; | |
1958 | if (wdata->result == -EAGAIN) | |
1959 | __set_page_dirty_nobuffers(page); | |
1960 | else if (wdata->result < 0) | |
1961 | SetPageError(page); | |
1962 | end_page_writeback(page); | |
1963 | page_cache_release(page); | |
1964 | } | |
1965 | if (wdata->result != -EAGAIN) | |
1966 | mapping_set_error(inode->i_mapping, wdata->result); | |
1967 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1968 | } | |
1969 | ||
1970 | struct cifs_writedata * | |
c2e87640 | 1971 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1972 | { |
1973 | struct cifs_writedata *wdata; | |
1974 | ||
1975 | /* this would overflow */ | |
1976 | if (nr_pages == 0) { | |
1977 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
1978 | return NULL; | |
1979 | } | |
1980 | ||
1981 | /* writedata + number of page pointers */ | |
1982 | wdata = kzalloc(sizeof(*wdata) + | |
1983 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1984 | if (wdata != NULL) { | |
c28c89fc | 1985 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1986 | INIT_LIST_HEAD(&wdata->list); |
1987 | init_completion(&wdata->done); | |
1988 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1989 | } |
1990 | return wdata; | |
1991 | } | |
1992 | ||
1993 | /* | |
7c9421e1 | 1994 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1995 | * workqueue completion task. |
1996 | */ | |
1997 | static void | |
1998 | cifs_writev_callback(struct mid_q_entry *mid) | |
1999 | { | |
2000 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2001 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2002 | unsigned int written; |
2003 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2004 | ||
7c9421e1 | 2005 | switch (mid->mid_state) { |
c28c89fc JL |
2006 | case MID_RESPONSE_RECEIVED: |
2007 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2008 | if (wdata->result != 0) | |
2009 | break; | |
2010 | ||
2011 | written = le16_to_cpu(smb->CountHigh); | |
2012 | written <<= 16; | |
2013 | written += le16_to_cpu(smb->Count); | |
2014 | /* | |
2015 | * Mask off high 16 bits when bytes written as returned | |
2016 | * by the server is greater than bytes requested by the | |
2017 | * client. OS/2 servers are known to set incorrect | |
2018 | * CountHigh values. | |
2019 | */ | |
2020 | if (written > wdata->bytes) | |
2021 | written &= 0xFFFF; | |
2022 | ||
2023 | if (written < wdata->bytes) | |
2024 | wdata->result = -ENOSPC; | |
2025 | else | |
2026 | wdata->bytes = written; | |
2027 | break; | |
2028 | case MID_REQUEST_SUBMITTED: | |
2029 | case MID_RETRY_NEEDED: | |
2030 | wdata->result = -EAGAIN; | |
2031 | break; | |
2032 | default: | |
2033 | wdata->result = -EIO; | |
2034 | break; | |
2035 | } | |
2036 | ||
da472fc8 | 2037 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2038 | DeleteMidQEntry(mid); |
45275789 | 2039 | add_credits(tcon->ses->server, 1); |
c28c89fc JL |
2040 | } |
2041 | ||
2042 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2043 | int | |
2044 | cifs_async_writev(struct cifs_writedata *wdata) | |
2045 | { | |
2046 | int i, rc = -EACCES; | |
2047 | WRITE_REQ *smb = NULL; | |
2048 | int wct; | |
96daf2b0 | 2049 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2050 | struct kvec *iov = NULL; |
2051 | ||
2052 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2053 | wct = 14; | |
2054 | } else { | |
2055 | wct = 12; | |
2056 | if (wdata->offset >> 32 > 0) { | |
2057 | /* can not handle big offset for old srv */ | |
2058 | return -EIO; | |
2059 | } | |
2060 | } | |
2061 | ||
2062 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2063 | if (rc) | |
2064 | goto async_writev_out; | |
2065 | ||
2066 | /* 1 iov per page + 1 for header */ | |
2067 | iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS); | |
2068 | if (iov == NULL) { | |
2069 | rc = -ENOMEM; | |
2070 | goto async_writev_out; | |
2071 | } | |
2072 | ||
fe5f5d2e JL |
2073 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2074 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2075 | |
c28c89fc JL |
2076 | smb->AndXCommand = 0xFF; /* none */ |
2077 | smb->Fid = wdata->cfile->netfid; | |
2078 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); | |
2079 | if (wct == 14) | |
2080 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2081 | smb->Reserved = 0xFFFFFFFF; | |
2082 | smb->WriteMode = 0; | |
2083 | smb->Remaining = 0; | |
2084 | ||
2085 | smb->DataOffset = | |
2086 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2087 | ||
2088 | /* 4 for RFC1001 length + 1 for BCC */ | |
2089 | iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; | |
2090 | iov[0].iov_base = smb; | |
2091 | ||
e9492871 JL |
2092 | /* |
2093 | * This function should marshal up the page array into the kvec | |
2094 | * array, reserving [0] for the header. It should kmap the pages | |
2095 | * and set the iov_len properly for each one. It may also set | |
2096 | * wdata->bytes too. | |
2097 | */ | |
3cf003c0 | 2098 | cifs_kmap_lock(); |
e9492871 | 2099 | wdata->marshal_iov(iov, wdata); |
3cf003c0 | 2100 | cifs_kmap_unlock(); |
c28c89fc JL |
2101 | |
2102 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
2103 | ||
2104 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2105 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2106 | ||
2107 | if (wct == 14) { | |
2108 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2109 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2110 | } else { | |
2111 | /* wct == 12 */ | |
2112 | struct smb_com_writex_req *smbw = | |
2113 | (struct smb_com_writex_req *)smb; | |
2114 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2115 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
2116 | iov[0].iov_len += 4; /* pad bigger by four bytes */ | |
2117 | } | |
2118 | ||
2119 | kref_get(&wdata->refcount); | |
2120 | rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1, | |
44d22d84 | 2121 | NULL, cifs_writev_callback, wdata, false); |
c28c89fc JL |
2122 | |
2123 | if (rc == 0) | |
2124 | cifs_stats_inc(&tcon->num_writes); | |
2125 | else | |
2126 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2127 | ||
2128 | /* send is done, unmap pages */ | |
2129 | for (i = 0; i < wdata->nr_pages; i++) | |
2130 | kunmap(wdata->pages[i]); | |
2131 | ||
2132 | async_writev_out: | |
2133 | cifs_small_buf_release(smb); | |
2134 | kfree(iov); | |
2135 | return rc; | |
2136 | } | |
2137 | ||
d6e04ae6 | 2138 | int |
fa2989f4 PS |
2139 | CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, |
2140 | unsigned int *nbytes, struct kvec *iov, int n_vec, | |
2141 | const int long_op) | |
1da177e4 LT |
2142 | { |
2143 | int rc = -EACCES; | |
2144 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2145 | int wct; |
d6e04ae6 | 2146 | int smb_hdr_len; |
ec637e3f | 2147 | int resp_buf_type = 0; |
fa2989f4 PS |
2148 | __u32 pid = io_parms->pid; |
2149 | __u16 netfid = io_parms->netfid; | |
2150 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2151 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2152 | unsigned int count = io_parms->length; |
1da177e4 | 2153 | |
fbec9ab9 JL |
2154 | *nbytes = 0; |
2155 | ||
b6b38f70 | 2156 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 2157 | |
4c3130ef | 2158 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2159 | wct = 14; |
4c3130ef | 2160 | } else { |
8cc64c6e | 2161 | wct = 12; |
4c3130ef SF |
2162 | if ((offset >> 32) > 0) { |
2163 | /* can not handle big offset for old srv */ | |
2164 | return -EIO; | |
2165 | } | |
2166 | } | |
8cc64c6e | 2167 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2168 | if (rc) |
2169 | return rc; | |
fa2989f4 PS |
2170 | |
2171 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2172 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2173 | ||
1da177e4 LT |
2174 | /* tcon and ses pointer are checked in smb_init */ |
2175 | if (tcon->ses->server == NULL) | |
2176 | return -ECONNABORTED; | |
2177 | ||
d6e04ae6 | 2178 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2179 | pSMB->Fid = netfid; |
2180 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2181 | if (wct == 14) |
8cc64c6e | 2182 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2183 | pSMB->Reserved = 0xFFFFFFFF; |
2184 | pSMB->WriteMode = 0; | |
2185 | pSMB->Remaining = 0; | |
d6e04ae6 | 2186 | |
1da177e4 | 2187 | pSMB->DataOffset = |
50c2f753 | 2188 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2189 | |
3e84469d SF |
2190 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2191 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2192 | /* header + 1 byte pad */ |
2193 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2194 | if (wct == 14) |
be8e3b00 | 2195 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2196 | else /* wct == 12 */ |
be8e3b00 | 2197 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2198 | if (wct == 14) |
8cc64c6e SF |
2199 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2200 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2201 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2202 | (struct smb_com_writex_req *)pSMB; |
2203 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2204 | } | |
3e84469d | 2205 | iov[0].iov_base = pSMB; |
790fe579 | 2206 | if (wct == 14) |
ec637e3f SF |
2207 | iov[0].iov_len = smb_hdr_len + 4; |
2208 | else /* wct == 12 pad bigger by four bytes */ | |
2209 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2210 | |
1da177e4 | 2211 | |
ec637e3f | 2212 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 2213 | long_op); |
a4544347 | 2214 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 2215 | if (rc) { |
b6b38f70 | 2216 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 2217 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2218 | /* presumably this can not happen, but best to be safe */ |
2219 | rc = -EIO; | |
d6e04ae6 | 2220 | } else { |
ad7a2926 | 2221 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2222 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2223 | *nbytes = (*nbytes) << 16; | |
2224 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2225 | |
2226 | /* | |
2227 | * Mask off high 16 bits when bytes written as returned by the | |
2228 | * server is greater than bytes requested by the client. OS/2 | |
2229 | * servers are known to set incorrect CountHigh values. | |
2230 | */ | |
2231 | if (*nbytes > count) | |
2232 | *nbytes &= 0xFFFF; | |
50c2f753 | 2233 | } |
1da177e4 | 2234 | |
4b8f930f | 2235 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2236 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2237 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2238 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2239 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2240 | |
50c2f753 | 2241 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2242 | since file handle passed in no longer valid */ |
2243 | ||
2244 | return rc; | |
2245 | } | |
d6e04ae6 | 2246 | |
9ee305b7 PS |
2247 | int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid, |
2248 | const __u8 lock_type, const __u32 num_unlock, | |
2249 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) | |
2250 | { | |
2251 | int rc = 0; | |
2252 | LOCK_REQ *pSMB = NULL; | |
2253 | struct kvec iov[2]; | |
2254 | int resp_buf_type; | |
2255 | __u16 count; | |
2256 | ||
2257 | cFYI(1, "cifs_lockv num lock %d num unlock %d", num_lock, num_unlock); | |
2258 | ||
2259 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2260 | if (rc) | |
2261 | return rc; | |
2262 | ||
2263 | pSMB->Timeout = 0; | |
2264 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2265 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2266 | pSMB->LockType = lock_type; | |
2267 | pSMB->AndXCommand = 0xFF; /* none */ | |
2268 | pSMB->Fid = netfid; /* netfid stays le */ | |
2269 | ||
2270 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2271 | inc_rfc1001_len(pSMB, count); | |
2272 | pSMB->ByteCount = cpu_to_le16(count); | |
2273 | ||
2274 | iov[0].iov_base = (char *)pSMB; | |
2275 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2276 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2277 | iov[1].iov_base = (char *)buf; | |
2278 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2279 | ||
2280 | cifs_stats_inc(&tcon->num_locks); | |
2281 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); | |
2282 | if (rc) | |
2283 | cFYI(1, "Send error in cifs_lockv = %d", rc); | |
2284 | ||
2285 | return rc; | |
2286 | } | |
d6e04ae6 | 2287 | |
1da177e4 | 2288 | int |
96daf2b0 | 2289 | CIFSSMBLock(const int xid, struct cifs_tcon *tcon, |
03776f45 | 2290 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2291 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2292 | const __u32 numLock, const __u8 lockType, |
2293 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2294 | { |
2295 | int rc = 0; | |
2296 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2297 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
2298 | int bytes_returned; |
2299 | int timeout = 0; | |
2300 | __u16 count; | |
2301 | ||
b6b38f70 | 2302 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
2303 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2304 | ||
1da177e4 LT |
2305 | if (rc) |
2306 | return rc; | |
2307 | ||
790fe579 | 2308 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 2309 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 2310 | pSMB->Timeout = 0; |
4b18f2a9 | 2311 | } else if (waitFlag) { |
133672ef | 2312 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2313 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2314 | } else { | |
2315 | pSMB->Timeout = 0; | |
2316 | } | |
2317 | ||
2318 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2319 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2320 | pSMB->LockType = lockType; | |
12fed00d | 2321 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2322 | pSMB->AndXCommand = 0xFF; /* none */ |
2323 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2324 | ||
790fe579 | 2325 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2326 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2327 | /* BB where to store pid high? */ |
2328 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2329 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2330 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2331 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2332 | count = sizeof(LOCKING_ANDX_RANGE); | |
2333 | } else { | |
2334 | /* oplock break */ | |
2335 | count = 0; | |
2336 | } | |
be8e3b00 | 2337 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2338 | pSMB->ByteCount = cpu_to_le16(count); |
2339 | ||
7ee1af76 JA |
2340 | if (waitFlag) { |
2341 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2342 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2343 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2344 | } else { |
792af7b0 | 2345 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, timeout); |
133672ef | 2346 | /* SMB buffer freed by function above */ |
7ee1af76 | 2347 | } |
a4544347 | 2348 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 2349 | if (rc) |
b6b38f70 | 2350 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2351 | |
50c2f753 | 2352 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2353 | since file handle passed in no longer valid */ |
2354 | return rc; | |
2355 | } | |
2356 | ||
08547b03 | 2357 | int |
96daf2b0 | 2358 | CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon, |
4f6bcec9 PS |
2359 | const __u16 smb_file_id, const __u32 netpid, const int get_flag, |
2360 | const __u64 len, struct file_lock *pLockData, | |
2361 | const __u16 lock_type, const bool waitFlag) | |
08547b03 SF |
2362 | { |
2363 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2364 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2365 | struct cifs_posix_lock *parm_data; |
2366 | int rc = 0; | |
3a5ff61c | 2367 | int timeout = 0; |
08547b03 | 2368 | int bytes_returned = 0; |
133672ef | 2369 | int resp_buf_type = 0; |
08547b03 | 2370 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2371 | struct kvec iov[1]; |
08547b03 | 2372 | |
b6b38f70 | 2373 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2374 | |
790fe579 | 2375 | if (pLockData == NULL) |
ed5f0370 | 2376 | return -EINVAL; |
fc94cdb9 | 2377 | |
08547b03 SF |
2378 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2379 | ||
2380 | if (rc) | |
2381 | return rc; | |
2382 | ||
2383 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2384 | ||
50c2f753 | 2385 | params = 6; |
08547b03 SF |
2386 | pSMB->MaxSetupCount = 0; |
2387 | pSMB->Reserved = 0; | |
2388 | pSMB->Flags = 0; | |
08547b03 SF |
2389 | pSMB->Reserved2 = 0; |
2390 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2391 | offset = param_offset + params; | |
2392 | ||
08547b03 SF |
2393 | count = sizeof(struct cifs_posix_lock); |
2394 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2395 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2396 | pSMB->SetupCount = 1; |
2397 | pSMB->Reserved3 = 0; | |
790fe579 | 2398 | if (get_flag) |
08547b03 SF |
2399 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2400 | else | |
2401 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2402 | byte_count = 3 /* pad */ + params + count; | |
2403 | pSMB->DataCount = cpu_to_le16(count); | |
2404 | pSMB->ParameterCount = cpu_to_le16(params); | |
2405 | pSMB->TotalDataCount = pSMB->DataCount; | |
2406 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2407 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2408 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2409 | (((char *) &pSMB->hdr.Protocol) + offset); |
2410 | ||
2411 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2412 | if (waitFlag) { |
133672ef | 2413 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2414 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2415 | pSMB->Timeout = cpu_to_le32(-1); |
2416 | } else | |
2417 | pSMB->Timeout = 0; | |
2418 | ||
4f6bcec9 | 2419 | parm_data->pid = cpu_to_le32(netpid); |
fc94cdb9 | 2420 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 2421 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2422 | |
2423 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2424 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2425 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2426 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2427 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2428 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2429 | if (waitFlag) { |
2430 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2431 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2432 | } else { | |
133672ef | 2433 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2434 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2435 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2436 | &resp_buf_type, timeout); | |
2437 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2438 | not try to free it twice below on exit */ | |
2439 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2440 | } |
2441 | ||
08547b03 | 2442 | if (rc) { |
b6b38f70 | 2443 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
2444 | } else if (get_flag) { |
2445 | /* lock structure can be returned on get */ | |
2446 | __u16 data_offset; | |
2447 | __u16 data_count; | |
2448 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2449 | ||
820a803f | 2450 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2451 | rc = -EIO; /* bad smb */ |
2452 | goto plk_err_exit; | |
2453 | } | |
fc94cdb9 SF |
2454 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2455 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2456 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2457 | rc = -EIO; |
2458 | goto plk_err_exit; | |
2459 | } | |
2460 | parm_data = (struct cifs_posix_lock *) | |
2461 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2462 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2463 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2464 | else { |
2465 | if (parm_data->lock_type == | |
2466 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2467 | pLockData->fl_type = F_RDLCK; | |
2468 | else if (parm_data->lock_type == | |
2469 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2470 | pLockData->fl_type = F_WRLCK; | |
2471 | ||
5443d130 SF |
2472 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2473 | pLockData->fl_end = pLockData->fl_start + | |
2474 | le64_to_cpu(parm_data->length) - 1; | |
2475 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2476 | } |
08547b03 | 2477 | } |
50c2f753 | 2478 | |
fc94cdb9 | 2479 | plk_err_exit: |
08547b03 SF |
2480 | if (pSMB) |
2481 | cifs_small_buf_release(pSMB); | |
2482 | ||
133672ef SF |
2483 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2484 | cifs_small_buf_release(iov[0].iov_base); | |
2485 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2486 | cifs_buf_release(iov[0].iov_base); | |
2487 | ||
08547b03 SF |
2488 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2489 | since file handle passed in no longer valid */ | |
2490 | ||
2491 | return rc; | |
2492 | } | |
2493 | ||
2494 | ||
1da177e4 | 2495 | int |
96daf2b0 | 2496 | CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2497 | { |
2498 | int rc = 0; | |
2499 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2500 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2501 | |
2502 | /* do not retry on dead session on close */ | |
2503 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2504 | if (rc == -EAGAIN) |
1da177e4 LT |
2505 | return 0; |
2506 | if (rc) | |
2507 | return rc; | |
2508 | ||
1da177e4 | 2509 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2510 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2511 | pSMB->ByteCount = 0; |
792af7b0 | 2512 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
a4544347 | 2513 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 2514 | if (rc) { |
790fe579 | 2515 | if (rc != -EINTR) { |
1da177e4 | 2516 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2517 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2518 | } |
2519 | } | |
2520 | ||
1da177e4 | 2521 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2522 | if (rc == -EAGAIN) |
1da177e4 LT |
2523 | rc = 0; |
2524 | ||
2525 | return rc; | |
2526 | } | |
2527 | ||
b298f223 | 2528 | int |
96daf2b0 | 2529 | CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2530 | { |
2531 | int rc = 0; | |
2532 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2533 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2534 | |
2535 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2536 | if (rc) | |
2537 | return rc; | |
2538 | ||
2539 | pSMB->FileID = (__u16) smb_file_id; | |
2540 | pSMB->ByteCount = 0; | |
792af7b0 | 2541 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
b298f223 SF |
2542 | cifs_stats_inc(&tcon->num_flushes); |
2543 | if (rc) | |
b6b38f70 | 2544 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2545 | |
2546 | return rc; | |
2547 | } | |
2548 | ||
1da177e4 | 2549 | int |
96daf2b0 | 2550 | CIFSSMBRename(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2551 | const char *fromName, const char *toName, |
737b758c | 2552 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2553 | { |
2554 | int rc = 0; | |
2555 | RENAME_REQ *pSMB = NULL; | |
2556 | RENAME_RSP *pSMBr = NULL; | |
2557 | int bytes_returned; | |
2558 | int name_len, name_len2; | |
2559 | __u16 count; | |
2560 | ||
b6b38f70 | 2561 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2562 | renameRetry: |
2563 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2564 | (void **) &pSMBr); | |
2565 | if (rc) | |
2566 | return rc; | |
2567 | ||
2568 | pSMB->BufferFormat = 0x04; | |
2569 | pSMB->SearchAttributes = | |
2570 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2571 | ATTR_DIRECTORY); | |
2572 | ||
2573 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2574 | name_len = | |
acbbb76a SF |
2575 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
2576 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2577 | name_len++; /* trailing null */ |
2578 | name_len *= 2; | |
2579 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2580 | /* protocol requires ASCII signature byte on Unicode string */ | |
2581 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2582 | name_len2 = | |
acbbb76a SF |
2583 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2584 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2585 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2586 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2587 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2588 | name_len = strnlen(fromName, PATH_MAX); |
2589 | name_len++; /* trailing null */ | |
2590 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2591 | name_len2 = strnlen(toName, PATH_MAX); | |
2592 | name_len2++; /* trailing null */ | |
2593 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2594 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2595 | name_len2++; /* trailing null */ | |
2596 | name_len2++; /* signature byte */ | |
2597 | } | |
2598 | ||
2599 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2600 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2601 | pSMB->ByteCount = cpu_to_le16(count); |
2602 | ||
2603 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2604 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2605 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2606 | if (rc) |
b6b38f70 | 2607 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2608 | |
1da177e4 LT |
2609 | cifs_buf_release(pSMB); |
2610 | ||
2611 | if (rc == -EAGAIN) | |
2612 | goto renameRetry; | |
2613 | ||
2614 | return rc; | |
2615 | } | |
2616 | ||
96daf2b0 | 2617 | int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon, |
391e5755 | 2618 | int netfid, const char *target_name, |
50c2f753 | 2619 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2620 | { |
2621 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2622 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2623 | struct set_file_rename *rename_info; |
1da177e4 LT |
2624 | char *data_offset; |
2625 | char dummy_string[30]; | |
2626 | int rc = 0; | |
2627 | int bytes_returned = 0; | |
2628 | int len_of_str; | |
2629 | __u16 params, param_offset, offset, count, byte_count; | |
2630 | ||
b6b38f70 | 2631 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2632 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2633 | (void **) &pSMBr); | |
2634 | if (rc) | |
2635 | return rc; | |
2636 | ||
2637 | params = 6; | |
2638 | pSMB->MaxSetupCount = 0; | |
2639 | pSMB->Reserved = 0; | |
2640 | pSMB->Flags = 0; | |
2641 | pSMB->Timeout = 0; | |
2642 | pSMB->Reserved2 = 0; | |
2643 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2644 | offset = param_offset + params; | |
2645 | ||
2646 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2647 | rename_info = (struct set_file_rename *) data_offset; | |
2648 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2649 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2650 | pSMB->SetupCount = 1; |
2651 | pSMB->Reserved3 = 0; | |
2652 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2653 | byte_count = 3 /* pad */ + params; | |
2654 | pSMB->ParameterCount = cpu_to_le16(params); | |
2655 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2656 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2657 | pSMB->DataOffset = cpu_to_le16(offset); | |
2658 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2659 | rename_info->overwrite = cpu_to_le32(1); | |
2660 | rename_info->root_fid = 0; | |
2661 | /* unicode only call */ | |
790fe579 | 2662 | if (target_name == NULL) { |
50c2f753 | 2663 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2664 | len_of_str = |
2665 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2666 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2667 | } else { |
acbbb76a SF |
2668 | len_of_str = |
2669 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2670 | target_name, PATH_MAX, nls_codepage, |
2671 | remap); | |
1da177e4 LT |
2672 | } |
2673 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2674 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2675 | byte_count += count; |
2676 | pSMB->DataCount = cpu_to_le16(count); | |
2677 | pSMB->TotalDataCount = pSMB->DataCount; | |
2678 | pSMB->Fid = netfid; | |
2679 | pSMB->InformationLevel = | |
2680 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2681 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2682 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2683 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2684 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2685 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2686 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2687 | if (rc) |
b6b38f70 | 2688 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2689 | |
1da177e4 LT |
2690 | cifs_buf_release(pSMB); |
2691 | ||
2692 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2693 | since file handle passed in no longer valid */ | |
2694 | ||
2695 | return rc; | |
2696 | } | |
2697 | ||
2698 | int | |
96daf2b0 | 2699 | CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName, |
50c2f753 SF |
2700 | const __u16 target_tid, const char *toName, const int flags, |
2701 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2702 | { |
2703 | int rc = 0; | |
2704 | COPY_REQ *pSMB = NULL; | |
2705 | COPY_RSP *pSMBr = NULL; | |
2706 | int bytes_returned; | |
2707 | int name_len, name_len2; | |
2708 | __u16 count; | |
2709 | ||
b6b38f70 | 2710 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2711 | copyRetry: |
2712 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2713 | (void **) &pSMBr); | |
2714 | if (rc) | |
2715 | return rc; | |
2716 | ||
2717 | pSMB->BufferFormat = 0x04; | |
2718 | pSMB->Tid2 = target_tid; | |
2719 | ||
2720 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2721 | ||
2722 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2723 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2724 | fromName, PATH_MAX, nls_codepage, | |
2725 | remap); | |
1da177e4 LT |
2726 | name_len++; /* trailing null */ |
2727 | name_len *= 2; | |
2728 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2729 | /* protocol requires ASCII signature byte on Unicode string */ | |
2730 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2731 | name_len2 = |
acbbb76a SF |
2732 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2733 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2734 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2735 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2736 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2737 | name_len = strnlen(fromName, PATH_MAX); |
2738 | name_len++; /* trailing null */ | |
2739 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2740 | name_len2 = strnlen(toName, PATH_MAX); | |
2741 | name_len2++; /* trailing null */ | |
2742 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2743 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2744 | name_len2++; /* trailing null */ | |
2745 | name_len2++; /* signature byte */ | |
2746 | } | |
2747 | ||
2748 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2749 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2750 | pSMB->ByteCount = cpu_to_le16(count); |
2751 | ||
2752 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2753 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2754 | if (rc) { | |
b6b38f70 JP |
2755 | cFYI(1, "Send error in copy = %d with %d files copied", |
2756 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2757 | } |
0d817bc0 | 2758 | cifs_buf_release(pSMB); |
1da177e4 LT |
2759 | |
2760 | if (rc == -EAGAIN) | |
2761 | goto copyRetry; | |
2762 | ||
2763 | return rc; | |
2764 | } | |
2765 | ||
2766 | int | |
96daf2b0 | 2767 | CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2768 | const char *fromName, const char *toName, |
2769 | const struct nls_table *nls_codepage) | |
2770 | { | |
2771 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2772 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2773 | char *data_offset; | |
2774 | int name_len; | |
2775 | int name_len_target; | |
2776 | int rc = 0; | |
2777 | int bytes_returned = 0; | |
2778 | __u16 params, param_offset, offset, byte_count; | |
2779 | ||
b6b38f70 | 2780 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2781 | createSymLinkRetry: |
2782 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2783 | (void **) &pSMBr); | |
2784 | if (rc) | |
2785 | return rc; | |
2786 | ||
2787 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2788 | name_len = | |
acbbb76a SF |
2789 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2790 | /* find define for this maxpathcomponent */ | |
2791 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2792 | name_len++; /* trailing null */ |
2793 | name_len *= 2; | |
2794 | ||
50c2f753 | 2795 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2796 | name_len = strnlen(fromName, PATH_MAX); |
2797 | name_len++; /* trailing null */ | |
2798 | strncpy(pSMB->FileName, fromName, name_len); | |
2799 | } | |
2800 | params = 6 + name_len; | |
2801 | pSMB->MaxSetupCount = 0; | |
2802 | pSMB->Reserved = 0; | |
2803 | pSMB->Flags = 0; | |
2804 | pSMB->Timeout = 0; | |
2805 | pSMB->Reserved2 = 0; | |
2806 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2807 | InformationLevel) - 4; |
1da177e4 LT |
2808 | offset = param_offset + params; |
2809 | ||
2810 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2811 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2812 | name_len_target = | |
acbbb76a SF |
2813 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2814 | /* find define for this maxpathcomponent */ | |
2815 | , nls_codepage); | |
1da177e4 LT |
2816 | name_len_target++; /* trailing null */ |
2817 | name_len_target *= 2; | |
50c2f753 | 2818 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2819 | name_len_target = strnlen(toName, PATH_MAX); |
2820 | name_len_target++; /* trailing null */ | |
2821 | strncpy(data_offset, toName, name_len_target); | |
2822 | } | |
2823 | ||
2824 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2825 | /* BB find exact max on data count below from sess */ | |
2826 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2827 | pSMB->SetupCount = 1; | |
2828 | pSMB->Reserved3 = 0; | |
2829 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2830 | byte_count = 3 /* pad */ + params + name_len_target; | |
2831 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2832 | pSMB->ParameterCount = cpu_to_le16(params); | |
2833 | pSMB->TotalDataCount = pSMB->DataCount; | |
2834 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2835 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2836 | pSMB->DataOffset = cpu_to_le16(offset); | |
2837 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2838 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2839 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2840 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2841 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2842 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2843 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2844 | if (rc) |
b6b38f70 | 2845 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2846 | |
0d817bc0 | 2847 | cifs_buf_release(pSMB); |
1da177e4 LT |
2848 | |
2849 | if (rc == -EAGAIN) | |
2850 | goto createSymLinkRetry; | |
2851 | ||
2852 | return rc; | |
2853 | } | |
2854 | ||
2855 | int | |
96daf2b0 | 2856 | CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2857 | const char *fromName, const char *toName, |
737b758c | 2858 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2859 | { |
2860 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2861 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2862 | char *data_offset; | |
2863 | int name_len; | |
2864 | int name_len_target; | |
2865 | int rc = 0; | |
2866 | int bytes_returned = 0; | |
2867 | __u16 params, param_offset, offset, byte_count; | |
2868 | ||
b6b38f70 | 2869 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2870 | createHardLinkRetry: |
2871 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2872 | (void **) &pSMBr); | |
2873 | if (rc) | |
2874 | return rc; | |
2875 | ||
2876 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2877 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2878 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2879 | name_len++; /* trailing null */ |
2880 | name_len *= 2; | |
2881 | ||
50c2f753 | 2882 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2883 | name_len = strnlen(toName, PATH_MAX); |
2884 | name_len++; /* trailing null */ | |
2885 | strncpy(pSMB->FileName, toName, name_len); | |
2886 | } | |
2887 | params = 6 + name_len; | |
2888 | pSMB->MaxSetupCount = 0; | |
2889 | pSMB->Reserved = 0; | |
2890 | pSMB->Flags = 0; | |
2891 | pSMB->Timeout = 0; | |
2892 | pSMB->Reserved2 = 0; | |
2893 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2894 | InformationLevel) - 4; |
1da177e4 LT |
2895 | offset = param_offset + params; |
2896 | ||
2897 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2898 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2899 | name_len_target = | |
acbbb76a SF |
2900 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2901 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2902 | name_len_target++; /* trailing null */ |
2903 | name_len_target *= 2; | |
50c2f753 | 2904 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2905 | name_len_target = strnlen(fromName, PATH_MAX); |
2906 | name_len_target++; /* trailing null */ | |
2907 | strncpy(data_offset, fromName, name_len_target); | |
2908 | } | |
2909 | ||
2910 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2911 | /* BB find exact max on data count below from sess*/ | |
2912 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2913 | pSMB->SetupCount = 1; | |
2914 | pSMB->Reserved3 = 0; | |
2915 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2916 | byte_count = 3 /* pad */ + params + name_len_target; | |
2917 | pSMB->ParameterCount = cpu_to_le16(params); | |
2918 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2919 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2920 | pSMB->TotalDataCount = pSMB->DataCount; | |
2921 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2922 | pSMB->DataOffset = cpu_to_le16(offset); | |
2923 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2924 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2925 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2926 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2927 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2928 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2929 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2930 | if (rc) |
b6b38f70 | 2931 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2932 | |
2933 | cifs_buf_release(pSMB); | |
2934 | if (rc == -EAGAIN) | |
2935 | goto createHardLinkRetry; | |
2936 | ||
2937 | return rc; | |
2938 | } | |
2939 | ||
2940 | int | |
96daf2b0 | 2941 | CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2942 | const char *fromName, const char *toName, |
737b758c | 2943 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2944 | { |
2945 | int rc = 0; | |
2946 | NT_RENAME_REQ *pSMB = NULL; | |
2947 | RENAME_RSP *pSMBr = NULL; | |
2948 | int bytes_returned; | |
2949 | int name_len, name_len2; | |
2950 | __u16 count; | |
2951 | ||
b6b38f70 | 2952 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2953 | winCreateHardLinkRetry: |
2954 | ||
2955 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2956 | (void **) &pSMBr); | |
2957 | if (rc) | |
2958 | return rc; | |
2959 | ||
2960 | pSMB->SearchAttributes = | |
2961 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2962 | ATTR_DIRECTORY); | |
2963 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2964 | pSMB->ClusterCount = 0; | |
2965 | ||
2966 | pSMB->BufferFormat = 0x04; | |
2967 | ||
2968 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2969 | name_len = | |
acbbb76a SF |
2970 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
2971 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2972 | name_len++; /* trailing null */ |
2973 | name_len *= 2; | |
fcc7c09d JL |
2974 | |
2975 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2976 | pSMB->OldFileName[name_len] = 0x04; | |
2977 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2978 | name_len2 = |
acbbb76a SF |
2979 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2980 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2981 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2982 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2983 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2984 | name_len = strnlen(fromName, PATH_MAX); |
2985 | name_len++; /* trailing null */ | |
2986 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2987 | name_len2 = strnlen(toName, PATH_MAX); | |
2988 | name_len2++; /* trailing null */ | |
2989 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2990 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2991 | name_len2++; /* trailing null */ | |
2992 | name_len2++; /* signature byte */ | |
2993 | } | |
2994 | ||
2995 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2996 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2997 | pSMB->ByteCount = cpu_to_le16(count); |
2998 | ||
2999 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3000 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3001 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 3002 | if (rc) |
b6b38f70 | 3003 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 3004 | |
1da177e4 LT |
3005 | cifs_buf_release(pSMB); |
3006 | if (rc == -EAGAIN) | |
3007 | goto winCreateHardLinkRetry; | |
3008 | ||
3009 | return rc; | |
3010 | } | |
3011 | ||
3012 | int | |
96daf2b0 | 3013 | CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *tcon, |
460b9696 | 3014 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
3015 | const struct nls_table *nls_codepage) |
3016 | { | |
3017 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3018 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3019 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3020 | int rc = 0; | |
3021 | int bytes_returned; | |
3022 | int name_len; | |
3023 | __u16 params, byte_count; | |
460b9696 | 3024 | char *data_start; |
1da177e4 | 3025 | |
b6b38f70 | 3026 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
3027 | |
3028 | querySymLinkRetry: | |
3029 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3030 | (void **) &pSMBr); | |
3031 | if (rc) | |
3032 | return rc; | |
3033 | ||
3034 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3035 | name_len = | |
acbbb76a SF |
3036 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3037 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3038 | name_len++; /* trailing null */ |
3039 | name_len *= 2; | |
50c2f753 | 3040 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3041 | name_len = strnlen(searchName, PATH_MAX); |
3042 | name_len++; /* trailing null */ | |
3043 | strncpy(pSMB->FileName, searchName, name_len); | |
3044 | } | |
3045 | ||
3046 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3047 | pSMB->TotalDataCount = 0; | |
3048 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3049 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3050 | pSMB->MaxSetupCount = 0; |
3051 | pSMB->Reserved = 0; | |
3052 | pSMB->Flags = 0; | |
3053 | pSMB->Timeout = 0; | |
3054 | pSMB->Reserved2 = 0; | |
3055 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3056 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3057 | pSMB->DataCount = 0; |
3058 | pSMB->DataOffset = 0; | |
3059 | pSMB->SetupCount = 1; | |
3060 | pSMB->Reserved3 = 0; | |
3061 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3062 | byte_count = params + 1 /* pad */ ; | |
3063 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3064 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3065 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3066 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3067 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3068 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3069 | ||
3070 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3071 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3072 | if (rc) { | |
b6b38f70 | 3073 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
3074 | } else { |
3075 | /* decode response */ | |
3076 | ||
3077 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3078 | /* BB also check enough total bytes returned */ |
820a803f | 3079 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3080 | rc = -EIO; |
1da177e4 | 3081 | else { |
0e0d2cf3 | 3082 | bool is_unicode; |
460b9696 JL |
3083 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3084 | ||
3085 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3086 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3087 | |
0e0d2cf3 SF |
3088 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3089 | is_unicode = true; | |
3090 | else | |
3091 | is_unicode = false; | |
3092 | ||
737b758c | 3093 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3094 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3095 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3096 | if (!*symlinkinfo) |
460b9696 | 3097 | rc = -ENOMEM; |
1da177e4 LT |
3098 | } |
3099 | } | |
3100 | cifs_buf_release(pSMB); | |
3101 | if (rc == -EAGAIN) | |
3102 | goto querySymLinkRetry; | |
3103 | return rc; | |
3104 | } | |
3105 | ||
c52a9554 SF |
3106 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3107 | /* | |
3108 | * Recent Windows versions now create symlinks more frequently | |
3109 | * and they use the "reparse point" mechanism below. We can of course | |
3110 | * do symlinks nicely to Samba and other servers which support the | |
3111 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3112 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3113 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3114 | * In the interim this code has been moved to its own config option so | |
3115 | * it is not compiled in by default until callers fixed up and more tested. | |
3116 | */ | |
1da177e4 | 3117 | int |
96daf2b0 | 3118 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3119 | const unsigned char *searchName, |
50c2f753 | 3120 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3121 | const struct nls_table *nls_codepage) |
3122 | { | |
3123 | int rc = 0; | |
3124 | int bytes_returned; | |
50c2f753 SF |
3125 | struct smb_com_transaction_ioctl_req *pSMB; |
3126 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3127 | |
b6b38f70 | 3128 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
3129 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3130 | (void **) &pSMBr); | |
3131 | if (rc) | |
3132 | return rc; | |
3133 | ||
3134 | pSMB->TotalParameterCount = 0 ; | |
3135 | pSMB->TotalDataCount = 0; | |
3136 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3137 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3138 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3139 | pSMB->MaxSetupCount = 4; |
3140 | pSMB->Reserved = 0; | |
3141 | pSMB->ParameterOffset = 0; | |
3142 | pSMB->DataCount = 0; | |
3143 | pSMB->DataOffset = 0; | |
3144 | pSMB->SetupCount = 4; | |
3145 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3146 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3147 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3148 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3149 | pSMB->IsRootFlag = 0; | |
3150 | pSMB->Fid = fid; /* file handle always le */ | |
3151 | pSMB->ByteCount = 0; | |
3152 | ||
3153 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3154 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3155 | if (rc) { | |
b6b38f70 | 3156 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
3157 | } else { /* decode response */ |
3158 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3159 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3160 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3161 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3162 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3163 | goto qreparse_out; |
3164 | } | |
3165 | if (data_count && (data_count < 2048)) { | |
3166 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3167 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3168 | |
afe48c31 | 3169 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3170 | (struct reparse_data *) |
3171 | ((char *)&pSMBr->hdr.Protocol | |
3172 | + data_offset); | |
afe48c31 SF |
3173 | if ((char *)reparse_buf >= end_of_smb) { |
3174 | rc = -EIO; | |
3175 | goto qreparse_out; | |
3176 | } | |
3177 | if ((reparse_buf->LinkNamesBuf + | |
3178 | reparse_buf->TargetNameOffset + | |
3179 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 3180 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
3181 | rc = -EIO; |
3182 | goto qreparse_out; | |
3183 | } | |
50c2f753 | 3184 | |
afe48c31 SF |
3185 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3186 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3187 | (reparse_buf->LinkNamesBuf + |
3188 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3189 | buflen, |
3190 | reparse_buf->TargetNameLen, | |
3191 | nls_codepage, 0); | |
3192 | } else { /* ASCII names */ | |
3193 | strncpy(symlinkinfo, | |
3194 | reparse_buf->LinkNamesBuf + | |
3195 | reparse_buf->TargetNameOffset, | |
3196 | min_t(const int, buflen, | |
3197 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3198 | } |
afe48c31 SF |
3199 | } else { |
3200 | rc = -EIO; | |
b6b38f70 JP |
3201 | cFYI(1, "Invalid return data count on " |
3202 | "get reparse info ioctl"); | |
1da177e4 | 3203 | } |
afe48c31 SF |
3204 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3205 | does not go off the end of the buffer */ | |
b6b38f70 | 3206 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 3207 | } |
989c7e51 | 3208 | |
1da177e4 | 3209 | qreparse_out: |
4a6d87f1 | 3210 | cifs_buf_release(pSMB); |
1da177e4 LT |
3211 | |
3212 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3213 | since file handle passed in no longer valid */ | |
3214 | ||
3215 | return rc; | |
3216 | } | |
c52a9554 | 3217 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3218 | |
3219 | #ifdef CONFIG_CIFS_POSIX | |
3220 | ||
3221 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3222 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3223 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3224 | { |
3225 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3226 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3227 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3228 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 3229 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
3230 | |
3231 | return; | |
3232 | } | |
3233 | ||
3234 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3235 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3236 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3237 | { |
3238 | int size = 0; | |
3239 | int i; | |
3240 | __u16 count; | |
50c2f753 SF |
3241 | struct cifs_posix_ace *pACE; |
3242 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3243 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3244 | |
3245 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3246 | return -EOPNOTSUPP; | |
3247 | ||
790fe579 | 3248 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3249 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3250 | pACE = &cifs_acl->ace_array[0]; | |
3251 | size = sizeof(struct cifs_posix_acl); | |
3252 | size += sizeof(struct cifs_posix_ace) * count; | |
3253 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3254 | if (size_of_data_area < size) { |
b6b38f70 JP |
3255 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
3256 | size_of_data_area, size); | |
1da177e4 LT |
3257 | return -EINVAL; |
3258 | } | |
790fe579 | 3259 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3260 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3261 | size = sizeof(struct cifs_posix_acl); | |
3262 | size += sizeof(struct cifs_posix_ace) * count; | |
3263 | /* skip past access ACEs to get to default ACEs */ | |
3264 | pACE = &cifs_acl->ace_array[count]; | |
3265 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3266 | size += sizeof(struct cifs_posix_ace) * count; | |
3267 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3268 | if (size_of_data_area < size) |
1da177e4 LT |
3269 | return -EINVAL; |
3270 | } else { | |
3271 | /* illegal type */ | |
3272 | return -EINVAL; | |
3273 | } | |
3274 | ||
3275 | size = posix_acl_xattr_size(count); | |
790fe579 | 3276 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3277 | /* used to query ACL EA size */ |
790fe579 | 3278 | } else if (size > buflen) { |
1da177e4 LT |
3279 | return -ERANGE; |
3280 | } else /* buffer big enough */ { | |
ff7feac9 | 3281 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3282 | for (i = 0; i < count ; i++) { |
3283 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3284 | pACE++; | |
1da177e4 LT |
3285 | } |
3286 | } | |
3287 | return size; | |
3288 | } | |
3289 | ||
50c2f753 SF |
3290 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3291 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3292 | { |
3293 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3294 | ||
ff7feac9 SF |
3295 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3296 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3297 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3298 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3299 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3300 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3301 | } else |
ff7feac9 | 3302 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 3303 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
3304 | return rc; |
3305 | } | |
3306 | ||
3307 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3308 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3309 | const int buflen, const int acl_type) | |
1da177e4 LT |
3310 | { |
3311 | __u16 rc = 0; | |
50c2f753 SF |
3312 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3313 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3314 | int count; |
3315 | int i; | |
3316 | ||
790fe579 | 3317 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3318 | return 0; |
3319 | ||
3320 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 3321 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 3322 | "version of %d", |
b6b38f70 | 3323 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 3324 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3325 | cFYI(1, "unknown POSIX ACL version %d", |
3326 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3327 | return 0; |
3328 | } | |
3329 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3330 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3331 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3332 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3333 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3334 | else { |
b6b38f70 | 3335 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3336 | return 0; |
3337 | } | |
50c2f753 | 3338 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3339 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3340 | &local_acl->a_entries[i]); | |
790fe579 | 3341 | if (rc != 0) { |
1da177e4 LT |
3342 | /* ACE not converted */ |
3343 | break; | |
3344 | } | |
3345 | } | |
790fe579 | 3346 | if (rc == 0) { |
1da177e4 LT |
3347 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3348 | rc += sizeof(struct cifs_posix_acl); | |
3349 | /* BB add check to make sure ACL does not overflow SMB */ | |
3350 | } | |
3351 | return rc; | |
3352 | } | |
3353 | ||
3354 | int | |
96daf2b0 | 3355 | CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3356 | const unsigned char *searchName, |
3357 | char *acl_inf, const int buflen, const int acl_type, | |
3358 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3359 | { |
3360 | /* SMB_QUERY_POSIX_ACL */ | |
3361 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3362 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3363 | int rc = 0; | |
3364 | int bytes_returned; | |
3365 | int name_len; | |
3366 | __u16 params, byte_count; | |
50c2f753 | 3367 | |
b6b38f70 | 3368 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3369 | |
3370 | queryAclRetry: | |
3371 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3372 | (void **) &pSMBr); | |
3373 | if (rc) | |
3374 | return rc; | |
50c2f753 | 3375 | |
1da177e4 LT |
3376 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3377 | name_len = | |
acbbb76a SF |
3378 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3379 | searchName, PATH_MAX, nls_codepage, | |
3380 | remap); | |
1da177e4 LT |
3381 | name_len++; /* trailing null */ |
3382 | name_len *= 2; | |
3383 | pSMB->FileName[name_len] = 0; | |
3384 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3385 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3386 | name_len = strnlen(searchName, PATH_MAX); |
3387 | name_len++; /* trailing null */ | |
3388 | strncpy(pSMB->FileName, searchName, name_len); | |
3389 | } | |
3390 | ||
3391 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3392 | pSMB->TotalDataCount = 0; | |
3393 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3394 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3395 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3396 | pSMB->MaxSetupCount = 0; | |
3397 | pSMB->Reserved = 0; | |
3398 | pSMB->Flags = 0; | |
3399 | pSMB->Timeout = 0; | |
3400 | pSMB->Reserved2 = 0; | |
3401 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3402 | offsetof(struct smb_com_transaction2_qpi_req, |
3403 | InformationLevel) - 4); | |
1da177e4 LT |
3404 | pSMB->DataCount = 0; |
3405 | pSMB->DataOffset = 0; | |
3406 | pSMB->SetupCount = 1; | |
3407 | pSMB->Reserved3 = 0; | |
3408 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3409 | byte_count = params + 1 /* pad */ ; | |
3410 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3411 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3412 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3413 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3414 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3415 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3416 | ||
3417 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3418 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 3419 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 3420 | if (rc) { |
b6b38f70 | 3421 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3422 | } else { |
3423 | /* decode response */ | |
50c2f753 | 3424 | |
1da177e4 | 3425 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3426 | /* BB also check enough total bytes returned */ |
820a803f | 3427 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3428 | rc = -EIO; /* bad smb */ |
3429 | else { | |
3430 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3431 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3432 | rc = cifs_copy_posix_acl(acl_inf, | |
3433 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3434 | buflen, acl_type, count); |
1da177e4 LT |
3435 | } |
3436 | } | |
3437 | cifs_buf_release(pSMB); | |
3438 | if (rc == -EAGAIN) | |
3439 | goto queryAclRetry; | |
3440 | return rc; | |
3441 | } | |
3442 | ||
3443 | int | |
96daf2b0 | 3444 | CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3445 | const unsigned char *fileName, |
3446 | const char *local_acl, const int buflen, | |
3447 | const int acl_type, | |
3448 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3449 | { |
3450 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3451 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3452 | char *parm_data; | |
3453 | int name_len; | |
3454 | int rc = 0; | |
3455 | int bytes_returned = 0; | |
3456 | __u16 params, byte_count, data_count, param_offset, offset; | |
3457 | ||
b6b38f70 | 3458 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3459 | setAclRetry: |
3460 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3461 | (void **) &pSMBr); |
1da177e4 LT |
3462 | if (rc) |
3463 | return rc; | |
3464 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3465 | name_len = | |
acbbb76a SF |
3466 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3467 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3468 | name_len++; /* trailing null */ |
3469 | name_len *= 2; | |
50c2f753 | 3470 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3471 | name_len = strnlen(fileName, PATH_MAX); |
3472 | name_len++; /* trailing null */ | |
3473 | strncpy(pSMB->FileName, fileName, name_len); | |
3474 | } | |
3475 | params = 6 + name_len; | |
3476 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3477 | /* BB find max SMB size from sess */ |
3478 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3479 | pSMB->MaxSetupCount = 0; |
3480 | pSMB->Reserved = 0; | |
3481 | pSMB->Flags = 0; | |
3482 | pSMB->Timeout = 0; | |
3483 | pSMB->Reserved2 = 0; | |
3484 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3485 | InformationLevel) - 4; |
1da177e4 LT |
3486 | offset = param_offset + params; |
3487 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3488 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3489 | ||
3490 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3491 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3492 | |
790fe579 | 3493 | if (data_count == 0) { |
1da177e4 LT |
3494 | rc = -EOPNOTSUPP; |
3495 | goto setACLerrorExit; | |
3496 | } | |
3497 | pSMB->DataOffset = cpu_to_le16(offset); | |
3498 | pSMB->SetupCount = 1; | |
3499 | pSMB->Reserved3 = 0; | |
3500 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3501 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3502 | byte_count = 3 /* pad */ + params + data_count; | |
3503 | pSMB->DataCount = cpu_to_le16(data_count); | |
3504 | pSMB->TotalDataCount = pSMB->DataCount; | |
3505 | pSMB->ParameterCount = cpu_to_le16(params); | |
3506 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3507 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3508 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3509 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3510 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3511 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3512 | if (rc) |
b6b38f70 | 3513 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3514 | |
3515 | setACLerrorExit: | |
3516 | cifs_buf_release(pSMB); | |
3517 | if (rc == -EAGAIN) | |
3518 | goto setAclRetry; | |
3519 | return rc; | |
3520 | } | |
3521 | ||
f654bac2 SF |
3522 | /* BB fix tabs in this function FIXME BB */ |
3523 | int | |
96daf2b0 | 3524 | CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3525 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3526 | { |
50c2f753 SF |
3527 | int rc = 0; |
3528 | struct smb_t2_qfi_req *pSMB = NULL; | |
3529 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3530 | int bytes_returned; | |
3531 | __u16 params, byte_count; | |
f654bac2 | 3532 | |
b6b38f70 | 3533 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3534 | if (tcon == NULL) |
3535 | return -ENODEV; | |
f654bac2 SF |
3536 | |
3537 | GetExtAttrRetry: | |
790fe579 SF |
3538 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3539 | (void **) &pSMBr); | |
3540 | if (rc) | |
3541 | return rc; | |
f654bac2 | 3542 | |
ad7a2926 | 3543 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3544 | pSMB->t2.TotalDataCount = 0; |
3545 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3546 | /* BB find exact max data count below from sess structure BB */ | |
3547 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3548 | pSMB->t2.MaxSetupCount = 0; | |
3549 | pSMB->t2.Reserved = 0; | |
3550 | pSMB->t2.Flags = 0; | |
3551 | pSMB->t2.Timeout = 0; | |
3552 | pSMB->t2.Reserved2 = 0; | |
3553 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3554 | Fid) - 4); | |
3555 | pSMB->t2.DataCount = 0; | |
3556 | pSMB->t2.DataOffset = 0; | |
3557 | pSMB->t2.SetupCount = 1; | |
3558 | pSMB->t2.Reserved3 = 0; | |
3559 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3560 | byte_count = params + 1 /* pad */ ; | |
3561 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3562 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3563 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3564 | pSMB->Pad = 0; | |
f654bac2 | 3565 | pSMB->Fid = netfid; |
be8e3b00 | 3566 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3567 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3568 | ||
3569 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3570 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3571 | if (rc) { | |
b6b38f70 | 3572 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3573 | } else { |
3574 | /* decode response */ | |
3575 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3576 | /* BB also check enough total bytes returned */ |
820a803f | 3577 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3578 | /* If rc should we check for EOPNOSUPP and |
3579 | disable the srvino flag? or in caller? */ | |
3580 | rc = -EIO; /* bad smb */ | |
3581 | else { | |
3582 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3583 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3584 | struct file_chattr_info *pfinfo; | |
3585 | /* BB Do we need a cast or hash here ? */ | |
3586 | if (count != 16) { | |
b6b38f70 | 3587 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3588 | rc = -EIO; |
3589 | goto GetExtAttrOut; | |
3590 | } | |
3591 | pfinfo = (struct file_chattr_info *) | |
3592 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3593 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3594 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3595 | } |
3596 | } | |
f654bac2 | 3597 | GetExtAttrOut: |
790fe579 SF |
3598 | cifs_buf_release(pSMB); |
3599 | if (rc == -EAGAIN) | |
3600 | goto GetExtAttrRetry; | |
3601 | return rc; | |
f654bac2 SF |
3602 | } |
3603 | ||
f654bac2 | 3604 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3605 | |
79df1bae JL |
3606 | #ifdef CONFIG_CIFS_ACL |
3607 | /* | |
3608 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3609 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3610 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3611 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3612 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3613 | * by caller | |
3614 | */ | |
3615 | static int | |
3616 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3617 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3618 | void **ret_buf) |
3619 | { | |
3620 | int rc; | |
3621 | __u32 temp_offset; | |
3622 | struct smb_com_ntransact_req *pSMB; | |
3623 | ||
3624 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3625 | (void **)&pSMB); | |
3626 | if (rc) | |
3627 | return rc; | |
3628 | *ret_buf = (void *)pSMB; | |
3629 | pSMB->Reserved = 0; | |
3630 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3631 | pSMB->TotalDataCount = 0; | |
c974befa | 3632 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3633 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3634 | pSMB->DataCount = pSMB->TotalDataCount; | |
3635 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3636 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3637 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3638 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3639 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3640 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3641 | return 0; | |
3642 | } | |
3643 | ||
3644 | static int | |
3645 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3646 | __u32 *pparmlen, __u32 *pdatalen) | |
3647 | { | |
3648 | char *end_of_smb; | |
3649 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3650 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3651 | u16 bcc; |
79df1bae JL |
3652 | |
3653 | *pdatalen = 0; | |
3654 | *pparmlen = 0; | |
3655 | ||
3656 | if (buf == NULL) | |
3657 | return -EINVAL; | |
3658 | ||
3659 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3660 | ||
820a803f JL |
3661 | bcc = get_bcc(&pSMBr->hdr); |
3662 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3663 | (char *)&pSMBr->ByteCount; |
3664 | ||
3665 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3666 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3667 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3668 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3669 | ||
3670 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3671 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3672 | ||
3673 | /* should we also check that parm and data areas do not overlap? */ | |
3674 | if (*ppparm > end_of_smb) { | |
3675 | cFYI(1, "parms start after end of smb"); | |
3676 | return -EINVAL; | |
3677 | } else if (parm_count + *ppparm > end_of_smb) { | |
3678 | cFYI(1, "parm end after end of smb"); | |
3679 | return -EINVAL; | |
3680 | } else if (*ppdata > end_of_smb) { | |
3681 | cFYI(1, "data starts after end of smb"); | |
3682 | return -EINVAL; | |
3683 | } else if (data_count + *ppdata > end_of_smb) { | |
3684 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3685 | *ppdata, data_count, (data_count + *ppdata), | |
3686 | end_of_smb, pSMBr); | |
3687 | return -EINVAL; | |
820a803f | 3688 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3689 | cFYI(1, "parm count and data count larger than SMB"); |
3690 | return -EINVAL; | |
3691 | } | |
3692 | *pdatalen = data_count; | |
3693 | *pparmlen = parm_count; | |
3694 | return 0; | |
3695 | } | |
3696 | ||
0a4b92c0 SF |
3697 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3698 | int | |
96daf2b0 | 3699 | CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3700 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3701 | { |
3702 | int rc = 0; | |
3703 | int buf_type = 0; | |
ad7a2926 | 3704 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3705 | struct kvec iov[1]; |
3706 | ||
b6b38f70 | 3707 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3708 | |
630f3f0c SF |
3709 | *pbuflen = 0; |
3710 | *acl_inf = NULL; | |
3711 | ||
b9c7a2bb | 3712 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3713 | 8 /* parm len */, tcon, (void **) &pSMB); |
3714 | if (rc) | |
3715 | return rc; | |
3716 | ||
3717 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3718 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3719 | pSMB->MaxSetupCount = 0; | |
3720 | pSMB->Fid = fid; /* file handle always le */ | |
3721 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3722 | CIFS_ACL_DACL); | |
3723 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3724 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3725 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3726 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3727 | |
a761ac57 | 3728 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3729 | 0); |
0a4b92c0 SF |
3730 | cifs_stats_inc(&tcon->num_acl_get); |
3731 | if (rc) { | |
b6b38f70 | 3732 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3733 | } else { /* decode response */ |
ad7a2926 | 3734 | __le32 *parm; |
630f3f0c SF |
3735 | __u32 parm_len; |
3736 | __u32 acl_len; | |
50c2f753 | 3737 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3738 | char *pdata; |
0a4b92c0 SF |
3739 | |
3740 | /* validate_nttransact */ | |
50c2f753 | 3741 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3742 | &pdata, &parm_len, pbuflen); |
790fe579 | 3743 | if (rc) |
0a4b92c0 SF |
3744 | goto qsec_out; |
3745 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3746 | ||
b6b38f70 | 3747 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3748 | |
3749 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3750 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3751 | *pbuflen = 0; |
0a4b92c0 SF |
3752 | goto qsec_out; |
3753 | } | |
3754 | ||
3755 | /* BB check that data area is minimum length and as big as acl_len */ | |
3756 | ||
af6f4612 | 3757 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3758 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3759 | cERROR(1, "acl length %d does not match %d", |
3760 | acl_len, *pbuflen); | |
630f3f0c SF |
3761 | if (*pbuflen > acl_len) |
3762 | *pbuflen = acl_len; | |
3763 | } | |
0a4b92c0 | 3764 | |
630f3f0c SF |
3765 | /* check if buffer is big enough for the acl |
3766 | header followed by the smallest SID */ | |
3767 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3768 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3769 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3770 | rc = -EINVAL; |
3771 | *pbuflen = 0; | |
3772 | } else { | |
3773 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3774 | if (*acl_inf == NULL) { | |
3775 | *pbuflen = 0; | |
3776 | rc = -ENOMEM; | |
3777 | } | |
3778 | memcpy(*acl_inf, pdata, *pbuflen); | |
3779 | } | |
0a4b92c0 SF |
3780 | } |
3781 | qsec_out: | |
790fe579 | 3782 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3783 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3784 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3785 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3786 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3787 | return rc; |
3788 | } | |
97837582 SF |
3789 | |
3790 | int | |
96daf2b0 | 3791 | CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3792 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3793 | { |
3794 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3795 | int rc = 0; | |
3796 | int bytes_returned = 0; | |
3797 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3798 | void *pSMBr; |
97837582 SF |
3799 | |
3800 | setCifsAclRetry: | |
b2a3ad9c | 3801 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3802 | if (rc) |
b2a3ad9c | 3803 | return rc; |
97837582 SF |
3804 | |
3805 | pSMB->MaxSetupCount = 0; | |
3806 | pSMB->Reserved = 0; | |
3807 | ||
3808 | param_count = 8; | |
3809 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3810 | data_count = acllen; | |
3811 | data_offset = param_offset + param_count; | |
3812 | byte_count = 3 /* pad */ + param_count; | |
3813 | ||
3814 | pSMB->DataCount = cpu_to_le32(data_count); | |
3815 | pSMB->TotalDataCount = pSMB->DataCount; | |
3816 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3817 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3818 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3819 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3820 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3821 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3822 | pSMB->SetupCount = 0; | |
3823 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3824 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3825 | ||
3826 | pSMB->Fid = fid; /* file handle always le */ | |
3827 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3828 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3829 | |
3830 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3831 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3832 | data_offset, pntsd, acllen); | |
be8e3b00 | 3833 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3834 | } else |
be8e3b00 | 3835 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3836 | |
3837 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3838 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3839 | ||
b6b38f70 | 3840 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3841 | if (rc) |
b6b38f70 | 3842 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3843 | cifs_buf_release(pSMB); |
3844 | ||
3845 | if (rc == -EAGAIN) | |
3846 | goto setCifsAclRetry; | |
3847 | ||
3848 | return (rc); | |
3849 | } | |
3850 | ||
79df1bae | 3851 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3852 | |
6b8edfe0 SF |
3853 | /* Legacy Query Path Information call for lookup to old servers such |
3854 | as Win9x/WinME */ | |
96daf2b0 | 3855 | int SMBQueryInformation(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3856 | const unsigned char *searchName, |
3857 | FILE_ALL_INFO *pFinfo, | |
3858 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3859 | { |
ad7a2926 SF |
3860 | QUERY_INFORMATION_REQ *pSMB; |
3861 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3862 | int rc = 0; |
3863 | int bytes_returned; | |
3864 | int name_len; | |
3865 | ||
b6b38f70 | 3866 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3867 | QInfRetry: |
3868 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3869 | (void **) &pSMBr); |
6b8edfe0 SF |
3870 | if (rc) |
3871 | return rc; | |
3872 | ||
3873 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3874 | name_len = | |
acbbb76a SF |
3875 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3876 | searchName, PATH_MAX, nls_codepage, | |
3877 | remap); | |
6b8edfe0 SF |
3878 | name_len++; /* trailing null */ |
3879 | name_len *= 2; | |
50c2f753 | 3880 | } else { |
6b8edfe0 SF |
3881 | name_len = strnlen(searchName, PATH_MAX); |
3882 | name_len++; /* trailing null */ | |
3883 | strncpy(pSMB->FileName, searchName, name_len); | |
3884 | } | |
3885 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3886 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3887 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3888 | pSMB->ByteCount = cpu_to_le16(name_len); |
3889 | ||
3890 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3891 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3892 | if (rc) { |
b6b38f70 | 3893 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3894 | } else if (pFinfo) { |
1bd5bbcb SF |
3895 | struct timespec ts; |
3896 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3897 | |
3898 | /* decode response */ | |
1bd5bbcb | 3899 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3900 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3901 | ts.tv_nsec = 0; |
3902 | ts.tv_sec = time; | |
3903 | /* decode time fields */ | |
733f99ac | 3904 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3905 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3906 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3907 | pFinfo->AllocationSize = |
3908 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3909 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3910 | pFinfo->Attributes = | |
3911 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3912 | } else |
3913 | rc = -EIO; /* bad buffer passed in */ | |
3914 | ||
3915 | cifs_buf_release(pSMB); | |
3916 | ||
3917 | if (rc == -EAGAIN) | |
3918 | goto QInfRetry; | |
3919 | ||
3920 | return rc; | |
3921 | } | |
3922 | ||
bcd5357f | 3923 | int |
96daf2b0 | 3924 | CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3925 | u16 netfid, FILE_ALL_INFO *pFindData) |
3926 | { | |
3927 | struct smb_t2_qfi_req *pSMB = NULL; | |
3928 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3929 | int rc = 0; | |
3930 | int bytes_returned; | |
3931 | __u16 params, byte_count; | |
3932 | ||
3933 | QFileInfoRetry: | |
3934 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3935 | (void **) &pSMBr); | |
3936 | if (rc) | |
3937 | return rc; | |
3938 | ||
3939 | params = 2 /* level */ + 2 /* fid */; | |
3940 | pSMB->t2.TotalDataCount = 0; | |
3941 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3942 | /* BB find exact max data count below from sess structure BB */ | |
3943 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3944 | pSMB->t2.MaxSetupCount = 0; | |
3945 | pSMB->t2.Reserved = 0; | |
3946 | pSMB->t2.Flags = 0; | |
3947 | pSMB->t2.Timeout = 0; | |
3948 | pSMB->t2.Reserved2 = 0; | |
3949 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3950 | Fid) - 4); | |
3951 | pSMB->t2.DataCount = 0; | |
3952 | pSMB->t2.DataOffset = 0; | |
3953 | pSMB->t2.SetupCount = 1; | |
3954 | pSMB->t2.Reserved3 = 0; | |
3955 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3956 | byte_count = params + 1 /* pad */ ; | |
3957 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3958 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3959 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3960 | pSMB->Pad = 0; | |
3961 | pSMB->Fid = netfid; | |
be8e3b00 | 3962 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3963 | |
bcd5357f JL |
3964 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3965 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3966 | if (rc) { | |
f19159dc | 3967 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3968 | } else { /* decode response */ |
3969 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3970 | |
bcd5357f JL |
3971 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3972 | rc = -EIO; | |
820a803f | 3973 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3974 | rc = -EIO; /* bad smb */ |
3975 | else if (pFindData) { | |
3976 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3977 | memcpy((char *) pFindData, | |
3978 | (char *) &pSMBr->hdr.Protocol + | |
3979 | data_offset, sizeof(FILE_ALL_INFO)); | |
3980 | } else | |
3981 | rc = -ENOMEM; | |
3982 | } | |
3983 | cifs_buf_release(pSMB); | |
3984 | if (rc == -EAGAIN) | |
3985 | goto QFileInfoRetry; | |
6b8edfe0 | 3986 | |
bcd5357f JL |
3987 | return rc; |
3988 | } | |
6b8edfe0 | 3989 | |
1da177e4 | 3990 | int |
96daf2b0 | 3991 | CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3992 | const unsigned char *searchName, |
ad7a2926 | 3993 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3994 | int legacy /* old style infolevel */, |
737b758c | 3995 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3996 | { |
3997 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3998 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3999 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4000 | int rc = 0; | |
4001 | int bytes_returned; | |
4002 | int name_len; | |
4003 | __u16 params, byte_count; | |
4004 | ||
b6b38f70 | 4005 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
4006 | QPathInfoRetry: |
4007 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4008 | (void **) &pSMBr); | |
4009 | if (rc) | |
4010 | return rc; | |
4011 | ||
4012 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4013 | name_len = | |
acbbb76a SF |
4014 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4015 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4016 | name_len++; /* trailing null */ |
4017 | name_len *= 2; | |
50c2f753 | 4018 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4019 | name_len = strnlen(searchName, PATH_MAX); |
4020 | name_len++; /* trailing null */ | |
4021 | strncpy(pSMB->FileName, searchName, name_len); | |
4022 | } | |
4023 | ||
50c2f753 | 4024 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4025 | pSMB->TotalDataCount = 0; |
4026 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4027 | /* BB find exact max SMB PDU from sess structure BB */ |
4028 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4029 | pSMB->MaxSetupCount = 0; |
4030 | pSMB->Reserved = 0; | |
4031 | pSMB->Flags = 0; | |
4032 | pSMB->Timeout = 0; | |
4033 | pSMB->Reserved2 = 0; | |
4034 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4035 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4036 | pSMB->DataCount = 0; |
4037 | pSMB->DataOffset = 0; | |
4038 | pSMB->SetupCount = 1; | |
4039 | pSMB->Reserved3 = 0; | |
4040 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4041 | byte_count = params + 1 /* pad */ ; | |
4042 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4043 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4044 | if (legacy) |
acf1a1b1 SF |
4045 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4046 | else | |
4047 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4048 | pSMB->Reserved4 = 0; |
be8e3b00 | 4049 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4050 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4051 | ||
4052 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4053 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4054 | if (rc) { | |
b6b38f70 | 4055 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4056 | } else { /* decode response */ |
4057 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4058 | ||
acf1a1b1 SF |
4059 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4060 | rc = -EIO; | |
820a803f | 4061 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4062 | rc = -EIO; /* bad smb */ |
820a803f | 4063 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4064 | rc = -EIO; /* 24 or 26 expected but we do not read |
4065 | last field */ | |
4066 | else if (pFindData) { | |
acf1a1b1 | 4067 | int size; |
1da177e4 | 4068 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
4069 | |
4070 | /* On legacy responses we do not read the last field, | |
4071 | EAsize, fortunately since it varies by subdialect and | |
4072 | also note it differs on Set vs. Get, ie two bytes or 4 | |
4073 | bytes depending but we don't care here */ | |
4074 | if (legacy) | |
acf1a1b1 SF |
4075 | size = sizeof(FILE_INFO_STANDARD); |
4076 | else | |
4077 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
4078 | memcpy((char *) pFindData, |
4079 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 4080 | data_offset, size); |
1da177e4 LT |
4081 | } else |
4082 | rc = -ENOMEM; | |
4083 | } | |
4084 | cifs_buf_release(pSMB); | |
4085 | if (rc == -EAGAIN) | |
4086 | goto QPathInfoRetry; | |
4087 | ||
4088 | return rc; | |
4089 | } | |
4090 | ||
c8634fd3 | 4091 | int |
96daf2b0 | 4092 | CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4093 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4094 | { | |
4095 | struct smb_t2_qfi_req *pSMB = NULL; | |
4096 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4097 | int rc = 0; | |
4098 | int bytes_returned; | |
4099 | __u16 params, byte_count; | |
4100 | ||
4101 | UnixQFileInfoRetry: | |
4102 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4103 | (void **) &pSMBr); | |
4104 | if (rc) | |
4105 | return rc; | |
4106 | ||
4107 | params = 2 /* level */ + 2 /* fid */; | |
4108 | pSMB->t2.TotalDataCount = 0; | |
4109 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4110 | /* BB find exact max data count below from sess structure BB */ | |
4111 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4112 | pSMB->t2.MaxSetupCount = 0; | |
4113 | pSMB->t2.Reserved = 0; | |
4114 | pSMB->t2.Flags = 0; | |
4115 | pSMB->t2.Timeout = 0; | |
4116 | pSMB->t2.Reserved2 = 0; | |
4117 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4118 | Fid) - 4); | |
4119 | pSMB->t2.DataCount = 0; | |
4120 | pSMB->t2.DataOffset = 0; | |
4121 | pSMB->t2.SetupCount = 1; | |
4122 | pSMB->t2.Reserved3 = 0; | |
4123 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4124 | byte_count = params + 1 /* pad */ ; | |
4125 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4126 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4127 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4128 | pSMB->Pad = 0; | |
4129 | pSMB->Fid = netfid; | |
be8e3b00 | 4130 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4131 | |
4132 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4133 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4134 | if (rc) { | |
f19159dc | 4135 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
4136 | } else { /* decode response */ |
4137 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4138 | ||
820a803f | 4139 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 4140 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 4141 | "Unix Extensions can be disabled on mount " |
f19159dc | 4142 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
4143 | rc = -EIO; /* bad smb */ |
4144 | } else { | |
4145 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4146 | memcpy((char *) pFindData, | |
4147 | (char *) &pSMBr->hdr.Protocol + | |
4148 | data_offset, | |
4149 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4150 | } | |
4151 | } | |
4152 | ||
4153 | cifs_buf_release(pSMB); | |
4154 | if (rc == -EAGAIN) | |
4155 | goto UnixQFileInfoRetry; | |
4156 | ||
4157 | return rc; | |
4158 | } | |
4159 | ||
1da177e4 | 4160 | int |
96daf2b0 | 4161 | CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 4162 | const unsigned char *searchName, |
582d21e5 | 4163 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4164 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4165 | { |
4166 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4167 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4168 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4169 | int rc = 0; | |
4170 | int bytes_returned = 0; | |
4171 | int name_len; | |
4172 | __u16 params, byte_count; | |
4173 | ||
b6b38f70 | 4174 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
4175 | UnixQPathInfoRetry: |
4176 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4177 | (void **) &pSMBr); | |
4178 | if (rc) | |
4179 | return rc; | |
4180 | ||
4181 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4182 | name_len = | |
acbbb76a SF |
4183 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4184 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4185 | name_len++; /* trailing null */ |
4186 | name_len *= 2; | |
50c2f753 | 4187 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4188 | name_len = strnlen(searchName, PATH_MAX); |
4189 | name_len++; /* trailing null */ | |
4190 | strncpy(pSMB->FileName, searchName, name_len); | |
4191 | } | |
4192 | ||
50c2f753 | 4193 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4194 | pSMB->TotalDataCount = 0; |
4195 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4196 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4197 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4198 | pSMB->MaxSetupCount = 0; |
4199 | pSMB->Reserved = 0; | |
4200 | pSMB->Flags = 0; | |
4201 | pSMB->Timeout = 0; | |
4202 | pSMB->Reserved2 = 0; | |
4203 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4204 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4205 | pSMB->DataCount = 0; |
4206 | pSMB->DataOffset = 0; | |
4207 | pSMB->SetupCount = 1; | |
4208 | pSMB->Reserved3 = 0; | |
4209 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4210 | byte_count = params + 1 /* pad */ ; | |
4211 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4212 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4213 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4214 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4215 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4216 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4217 | ||
4218 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4219 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4220 | if (rc) { | |
b6b38f70 | 4221 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4222 | } else { /* decode response */ |
4223 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4224 | ||
820a803f | 4225 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 4226 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 4227 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 4228 | "by specifying the nosfu mount option."); |
1da177e4 LT |
4229 | rc = -EIO; /* bad smb */ |
4230 | } else { | |
4231 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4232 | memcpy((char *) pFindData, | |
4233 | (char *) &pSMBr->hdr.Protocol + | |
4234 | data_offset, | |
630f3f0c | 4235 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4236 | } |
4237 | } | |
4238 | cifs_buf_release(pSMB); | |
4239 | if (rc == -EAGAIN) | |
4240 | goto UnixQPathInfoRetry; | |
4241 | ||
4242 | return rc; | |
4243 | } | |
4244 | ||
1da177e4 LT |
4245 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4246 | int | |
96daf2b0 | 4247 | CIFSFindFirst(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4248 | const char *searchName, |
1da177e4 | 4249 | const struct nls_table *nls_codepage, |
2608bee7 | 4250 | __u16 *pnetfid, __u16 search_flags, |
50c2f753 | 4251 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) |
1da177e4 LT |
4252 | { |
4253 | /* level 257 SMB_ */ | |
4254 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4255 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4256 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4257 | int rc = 0; |
4258 | int bytes_returned = 0; | |
4259 | int name_len; | |
4260 | __u16 params, byte_count; | |
4261 | ||
b6b38f70 | 4262 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
4263 | |
4264 | findFirstRetry: | |
4265 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4266 | (void **) &pSMBr); | |
4267 | if (rc) | |
4268 | return rc; | |
4269 | ||
4270 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4271 | name_len = | |
acbbb76a SF |
4272 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4273 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4274 | /* We can not add the asterik earlier in case |
4275 | it got remapped to 0xF03A as if it were part of the | |
4276 | directory name instead of a wildcard */ | |
1da177e4 | 4277 | name_len *= 2; |
ac67055e | 4278 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
4279 | pSMB->FileName[name_len+1] = 0; |
4280 | pSMB->FileName[name_len+2] = '*'; | |
4281 | pSMB->FileName[name_len+3] = 0; | |
4282 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
4283 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
4284 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 4285 | name_len += 2; |
1da177e4 LT |
4286 | } else { /* BB add check for overrun of SMB buf BB */ |
4287 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4288 | /* BB fix here and in unicode clause above ie |
790fe579 | 4289 | if (name_len > buffersize-header) |
1da177e4 LT |
4290 | free buffer exit; BB */ |
4291 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 4292 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
4293 | pSMB->FileName[name_len+1] = '*'; |
4294 | pSMB->FileName[name_len+2] = 0; | |
4295 | name_len += 3; | |
1da177e4 LT |
4296 | } |
4297 | ||
4298 | params = 12 + name_len /* includes null */ ; | |
4299 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4300 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4301 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4302 | pSMB->MaxSetupCount = 0; |
4303 | pSMB->Reserved = 0; | |
4304 | pSMB->Flags = 0; | |
4305 | pSMB->Timeout = 0; | |
4306 | pSMB->Reserved2 = 0; | |
4307 | byte_count = params + 1 /* pad */ ; | |
4308 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4309 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4310 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4311 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4312 | - 4); | |
1da177e4 LT |
4313 | pSMB->DataCount = 0; |
4314 | pSMB->DataOffset = 0; | |
4315 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4316 | pSMB->Reserved3 = 0; | |
4317 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4318 | pSMB->SearchAttributes = | |
4319 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4320 | ATTR_DIRECTORY); | |
50c2f753 | 4321 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4322 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4323 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4324 | ||
4325 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4326 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4327 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4328 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4329 | ||
4330 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4331 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4332 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 4333 | |
88274815 SF |
4334 | if (rc) {/* BB add logic to retry regular search if Unix search |
4335 | rejected unexpectedly by server */ | |
1da177e4 | 4336 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4337 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4338 | |
88274815 | 4339 | cifs_buf_release(pSMB); |
1da177e4 LT |
4340 | |
4341 | /* BB eventually could optimize out free and realloc of buf */ | |
4342 | /* for this case */ | |
4343 | if (rc == -EAGAIN) | |
4344 | goto findFirstRetry; | |
4345 | } else { /* decode response */ | |
4346 | /* BB remember to free buffer if error BB */ | |
4347 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4348 | if (rc == 0) { |
b77d753c SF |
4349 | unsigned int lnoff; |
4350 | ||
1da177e4 | 4351 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4352 | psrch_inf->unicode = true; |
1da177e4 | 4353 | else |
4b18f2a9 | 4354 | psrch_inf->unicode = false; |
1da177e4 LT |
4355 | |
4356 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4357 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4358 | psrch_inf->srch_entries_start = |
4359 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4360 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4361 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4362 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4363 | ||
790fe579 | 4364 | if (parms->EndofSearch) |
4b18f2a9 | 4365 | psrch_inf->endOfSearch = true; |
1da177e4 | 4366 | else |
4b18f2a9 | 4367 | psrch_inf->endOfSearch = false; |
1da177e4 | 4368 | |
50c2f753 SF |
4369 | psrch_inf->entries_in_buffer = |
4370 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4371 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4372 | psrch_inf->entries_in_buffer; |
b77d753c | 4373 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4374 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4375 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4376 | psrch_inf->last_entry = NULL; |
4377 | return rc; | |
4378 | } | |
4379 | ||
0752f152 | 4380 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4381 | lnoff; |
4382 | ||
1da177e4 LT |
4383 | *pnetfid = parms->SearchHandle; |
4384 | } else { | |
4385 | cifs_buf_release(pSMB); | |
4386 | } | |
4387 | } | |
4388 | ||
4389 | return rc; | |
4390 | } | |
4391 | ||
2608bee7 SP |
4392 | int CIFSFindNext(const int xid, struct cifs_tcon *tcon, __u16 searchHandle, |
4393 | __u16 search_flags, struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4394 | { |
4395 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4396 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4397 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4398 | char *response_data; |
4399 | int rc = 0; | |
9438fabb JL |
4400 | int bytes_returned; |
4401 | unsigned int name_len; | |
1da177e4 LT |
4402 | __u16 params, byte_count; |
4403 | ||
b6b38f70 | 4404 | cFYI(1, "In FindNext"); |
1da177e4 | 4405 | |
4b18f2a9 | 4406 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4407 | return -ENOENT; |
4408 | ||
4409 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4410 | (void **) &pSMBr); | |
4411 | if (rc) | |
4412 | return rc; | |
4413 | ||
50c2f753 | 4414 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4415 | byte_count = 0; |
4416 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4417 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4418 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4419 | pSMB->MaxSetupCount = 0; |
4420 | pSMB->Reserved = 0; | |
4421 | pSMB->Flags = 0; | |
4422 | pSMB->Timeout = 0; | |
4423 | pSMB->Reserved2 = 0; | |
4424 | pSMB->ParameterOffset = cpu_to_le16( | |
4425 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4426 | pSMB->DataCount = 0; | |
4427 | pSMB->DataOffset = 0; | |
4428 | pSMB->SetupCount = 1; | |
4429 | pSMB->Reserved3 = 0; | |
4430 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4431 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4432 | pSMB->SearchCount = | |
630f3f0c | 4433 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4434 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4435 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4436 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4437 | |
4438 | name_len = psrch_inf->resume_name_len; | |
4439 | params += name_len; | |
790fe579 | 4440 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4441 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4442 | byte_count += name_len; | |
ef6724e3 SF |
4443 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4444 | pSMB->ResumeFileName[name_len] = 0; | |
4445 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4446 | } else { |
4447 | rc = -EINVAL; | |
4448 | goto FNext2_err_exit; | |
4449 | } | |
4450 | byte_count = params + 1 /* pad */ ; | |
4451 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4452 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4453 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4454 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4455 | |
1da177e4 LT |
4456 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4457 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4458 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
4459 | if (rc) { |
4460 | if (rc == -EBADF) { | |
4b18f2a9 | 4461 | psrch_inf->endOfSearch = true; |
6353450a | 4462 | cifs_buf_release(pSMB); |
50c2f753 | 4463 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4464 | } else |
b6b38f70 | 4465 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4466 | } else { /* decode response */ |
4467 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4468 | |
790fe579 | 4469 | if (rc == 0) { |
b77d753c SF |
4470 | unsigned int lnoff; |
4471 | ||
1da177e4 LT |
4472 | /* BB fixme add lock for file (srch_info) struct here */ |
4473 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4474 | psrch_inf->unicode = true; |
1da177e4 | 4475 | else |
4b18f2a9 | 4476 | psrch_inf->unicode = false; |
1da177e4 LT |
4477 | response_data = (char *) &pSMBr->hdr.Protocol + |
4478 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4479 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4480 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4481 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4482 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4483 | cifs_small_buf_release( |
4484 | psrch_inf->ntwrk_buf_start); | |
4485 | else | |
4486 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4487 | psrch_inf->srch_entries_start = response_data; |
4488 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4489 | psrch_inf->smallBuf = 0; |
790fe579 | 4490 | if (parms->EndofSearch) |
4b18f2a9 | 4491 | psrch_inf->endOfSearch = true; |
1da177e4 | 4492 | else |
4b18f2a9 | 4493 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4494 | psrch_inf->entries_in_buffer = |
4495 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4496 | psrch_inf->index_of_last_entry += |
4497 | psrch_inf->entries_in_buffer; | |
b77d753c | 4498 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4499 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4500 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4501 | psrch_inf->last_entry = NULL; |
4502 | return rc; | |
4503 | } else | |
4504 | psrch_inf->last_entry = | |
4505 | psrch_inf->srch_entries_start + lnoff; | |
4506 | ||
b6b38f70 JP |
4507 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4508 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4509 | |
4510 | /* BB fixme add unlock here */ | |
4511 | } | |
4512 | ||
4513 | } | |
4514 | ||
4515 | /* BB On error, should we leave previous search buf (and count and | |
4516 | last entry fields) intact or free the previous one? */ | |
4517 | ||
4518 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4519 | since file handle passed in no longer valid */ | |
4520 | FNext2_err_exit: | |
4521 | if (rc != 0) | |
4522 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4523 | return rc; |
4524 | } | |
4525 | ||
4526 | int | |
96daf2b0 | 4527 | CIFSFindClose(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4528 | const __u16 searchHandle) |
1da177e4 LT |
4529 | { |
4530 | int rc = 0; | |
4531 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4532 | |
b6b38f70 | 4533 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4534 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4535 | ||
4536 | /* no sense returning error if session restarted | |
4537 | as file handle has been closed */ | |
790fe579 | 4538 | if (rc == -EAGAIN) |
1da177e4 LT |
4539 | return 0; |
4540 | if (rc) | |
4541 | return rc; | |
4542 | ||
1da177e4 LT |
4543 | pSMB->FileID = searchHandle; |
4544 | pSMB->ByteCount = 0; | |
792af7b0 | 4545 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4546 | if (rc) |
b6b38f70 | 4547 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4548 | |
a4544347 | 4549 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
4550 | |
4551 | /* Since session is dead, search handle closed on server already */ | |
4552 | if (rc == -EAGAIN) | |
4553 | rc = 0; | |
4554 | ||
4555 | return rc; | |
4556 | } | |
4557 | ||
1da177e4 | 4558 | int |
96daf2b0 | 4559 | CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4560 | const unsigned char *searchName, |
ad7a2926 | 4561 | __u64 *inode_number, |
50c2f753 | 4562 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4563 | { |
4564 | int rc = 0; | |
4565 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4566 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4567 | int name_len, bytes_returned; | |
4568 | __u16 params, byte_count; | |
4569 | ||
b6b38f70 | 4570 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 4571 | if (tcon == NULL) |
50c2f753 | 4572 | return -ENODEV; |
1da177e4 LT |
4573 | |
4574 | GetInodeNumberRetry: | |
4575 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4576 | (void **) &pSMBr); |
1da177e4 LT |
4577 | if (rc) |
4578 | return rc; | |
4579 | ||
1da177e4 LT |
4580 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4581 | name_len = | |
acbbb76a SF |
4582 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
4583 | searchName, PATH_MAX, nls_codepage, | |
4584 | remap); | |
1da177e4 LT |
4585 | name_len++; /* trailing null */ |
4586 | name_len *= 2; | |
50c2f753 | 4587 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4588 | name_len = strnlen(searchName, PATH_MAX); |
4589 | name_len++; /* trailing null */ | |
4590 | strncpy(pSMB->FileName, searchName, name_len); | |
4591 | } | |
4592 | ||
4593 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4594 | pSMB->TotalDataCount = 0; | |
4595 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4596 | /* BB find exact max data count below from sess structure BB */ | |
4597 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4598 | pSMB->MaxSetupCount = 0; | |
4599 | pSMB->Reserved = 0; | |
4600 | pSMB->Flags = 0; | |
4601 | pSMB->Timeout = 0; | |
4602 | pSMB->Reserved2 = 0; | |
4603 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4604 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4605 | pSMB->DataCount = 0; |
4606 | pSMB->DataOffset = 0; | |
4607 | pSMB->SetupCount = 1; | |
4608 | pSMB->Reserved3 = 0; | |
4609 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4610 | byte_count = params + 1 /* pad */ ; | |
4611 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4612 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4613 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4614 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4615 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4616 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4617 | ||
4618 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4619 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4620 | if (rc) { | |
b6b38f70 | 4621 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4622 | } else { |
4623 | /* decode response */ | |
4624 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4625 | /* BB also check enough total bytes returned */ |
820a803f | 4626 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4627 | /* If rc should we check for EOPNOSUPP and |
4628 | disable the srvino flag? or in caller? */ | |
4629 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4630 | else { |
1da177e4 LT |
4631 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4632 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4633 | struct file_internal_info *pfinfo; |
1da177e4 | 4634 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4635 | if (count < 8) { |
b6b38f70 | 4636 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4637 | rc = -EIO; |
4638 | goto GetInodeNumOut; | |
4639 | } | |
4640 | pfinfo = (struct file_internal_info *) | |
4641 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4642 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4643 | } |
4644 | } | |
4645 | GetInodeNumOut: | |
4646 | cifs_buf_release(pSMB); | |
4647 | if (rc == -EAGAIN) | |
4648 | goto GetInodeNumberRetry; | |
4649 | return rc; | |
4650 | } | |
1da177e4 | 4651 | |
fec4585f IM |
4652 | /* parses DFS refferal V3 structure |
4653 | * caller is responsible for freeing target_nodes | |
4654 | * returns: | |
4655 | * on success - 0 | |
4656 | * on failure - errno | |
4657 | */ | |
4658 | static int | |
a1fe78f1 | 4659 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4660 | unsigned int *num_of_nodes, |
4661 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4662 | const struct nls_table *nls_codepage, int remap, |
4663 | const char *searchName) | |
fec4585f IM |
4664 | { |
4665 | int i, rc = 0; | |
4666 | char *data_end; | |
4667 | bool is_unicode; | |
4668 | struct dfs_referral_level_3 *ref; | |
4669 | ||
5ca33c6a HH |
4670 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4671 | is_unicode = true; | |
4672 | else | |
4673 | is_unicode = false; | |
fec4585f IM |
4674 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4675 | ||
4676 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4677 | cERROR(1, "num_referrals: must be at least > 0," |
4678 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4679 | rc = -EINVAL; |
a1fe78f1 | 4680 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4681 | } |
4682 | ||
4683 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4684 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4685 | cERROR(1, "Referrals of V%d version are not supported," |
4686 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4687 | rc = -EINVAL; |
a1fe78f1 | 4688 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4689 | } |
4690 | ||
4691 | /* get the upper boundary of the resp buffer */ | |
4692 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4693 | le16_to_cpu(pSMBr->t2.DataCount); | |
4694 | ||
f19159dc | 4695 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4696 | *num_of_nodes, |
b6b38f70 | 4697 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4698 | |
4699 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4700 | *num_of_nodes, GFP_KERNEL); | |
4701 | if (*target_nodes == NULL) { | |
b6b38f70 | 4702 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4703 | rc = -ENOMEM; |
a1fe78f1 | 4704 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4705 | } |
4706 | ||
3ad2f3fb | 4707 | /* collect necessary data from referrals */ |
fec4585f IM |
4708 | for (i = 0; i < *num_of_nodes; i++) { |
4709 | char *temp; | |
4710 | int max_len; | |
4711 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4712 | ||
0e0d2cf3 | 4713 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4714 | if (is_unicode) { |
331c3135 JL |
4715 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4716 | GFP_KERNEL); | |
2920ee2b SF |
4717 | if (tmp == NULL) { |
4718 | rc = -ENOMEM; | |
4719 | goto parse_DFS_referrals_exit; | |
4720 | } | |
acbbb76a SF |
4721 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4722 | PATH_MAX, nls_codepage, remap); | |
4723 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4724 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4725 | nls_codepage); |
4726 | kfree(tmp); | |
4727 | } else | |
4728 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4729 | ||
fec4585f IM |
4730 | node->server_type = le16_to_cpu(ref->ServerType); |
4731 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4732 | ||
4733 | /* copy DfsPath */ | |
4734 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4735 | max_len = data_end - temp; | |
acbbb76a SF |
4736 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4737 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4738 | if (!node->path_name) { |
4739 | rc = -ENOMEM; | |
a1fe78f1 | 4740 | goto parse_DFS_referrals_exit; |
066ce689 | 4741 | } |
fec4585f IM |
4742 | |
4743 | /* copy link target UNC */ | |
4744 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4745 | max_len = data_end - temp; | |
acbbb76a SF |
4746 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4747 | is_unicode, nls_codepage); | |
d8f2799b | 4748 | if (!node->node_name) { |
d8e2f53a | 4749 | rc = -ENOMEM; |
d8f2799b SM |
4750 | goto parse_DFS_referrals_exit; |
4751 | } | |
4752 | ||
4753 | ref++; | |
fec4585f IM |
4754 | } |
4755 | ||
a1fe78f1 | 4756 | parse_DFS_referrals_exit: |
fec4585f IM |
4757 | if (rc) { |
4758 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4759 | *target_nodes = NULL; | |
4760 | *num_of_nodes = 0; | |
4761 | } | |
4762 | return rc; | |
4763 | } | |
4764 | ||
1da177e4 | 4765 | int |
96daf2b0 | 4766 | CIFSGetDFSRefer(const int xid, struct cifs_ses *ses, |
1da177e4 | 4767 | const unsigned char *searchName, |
c2cf07d5 SF |
4768 | struct dfs_info3_param **target_nodes, |
4769 | unsigned int *num_of_nodes, | |
737b758c | 4770 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4771 | { |
4772 | /* TRANS2_GET_DFS_REFERRAL */ | |
4773 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4774 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4775 | int rc = 0; |
4776 | int bytes_returned; | |
4777 | int name_len; | |
1da177e4 | 4778 | __u16 params, byte_count; |
c2cf07d5 SF |
4779 | *num_of_nodes = 0; |
4780 | *target_nodes = NULL; | |
1da177e4 | 4781 | |
b6b38f70 | 4782 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4783 | if (ses == NULL) |
4784 | return -ENODEV; | |
4785 | getDFSRetry: | |
4786 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4787 | (void **) &pSMBr); | |
4788 | if (rc) | |
4789 | return rc; | |
50c2f753 SF |
4790 | |
4791 | /* server pointer checked in called function, | |
1982c344 | 4792 | but should never be null here anyway */ |
88257360 | 4793 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4794 | pSMB->hdr.Tid = ses->ipc_tid; |
4795 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4796 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4797 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4798 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4799 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4800 | |
4801 | if (ses->capabilities & CAP_UNICODE) { | |
4802 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4803 | name_len = | |
acbbb76a SF |
4804 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
4805 | searchName, PATH_MAX, nls_codepage, | |
4806 | remap); | |
1da177e4 LT |
4807 | name_len++; /* trailing null */ |
4808 | name_len *= 2; | |
50c2f753 | 4809 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4810 | name_len = strnlen(searchName, PATH_MAX); |
4811 | name_len++; /* trailing null */ | |
4812 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4813 | } | |
4814 | ||
790fe579 | 4815 | if (ses->server) { |
96daf2b0 | 4816 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4817 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4818 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4819 | } | |
4820 | ||
50c2f753 | 4821 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4822 | |
1da177e4 LT |
4823 | params = 2 /* level */ + name_len /*includes null */ ; |
4824 | pSMB->TotalDataCount = 0; | |
4825 | pSMB->DataCount = 0; | |
4826 | pSMB->DataOffset = 0; | |
4827 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4828 | /* BB find exact max SMB PDU from sess structure BB */ |
4829 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4830 | pSMB->MaxSetupCount = 0; |
4831 | pSMB->Reserved = 0; | |
4832 | pSMB->Flags = 0; | |
4833 | pSMB->Timeout = 0; | |
4834 | pSMB->Reserved2 = 0; | |
4835 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4836 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4837 | pSMB->SetupCount = 1; |
4838 | pSMB->Reserved3 = 0; | |
4839 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4840 | byte_count = params + 3 /* pad */ ; | |
4841 | pSMB->ParameterCount = cpu_to_le16(params); | |
4842 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4843 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4844 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4845 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4846 | ||
4847 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4848 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4849 | if (rc) { | |
b6b38f70 | 4850 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4851 | goto GetDFSRefExit; |
4852 | } | |
4853 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4854 | |
c2cf07d5 | 4855 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4856 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4857 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4858 | goto GetDFSRefExit; |
4859 | } | |
c2cf07d5 | 4860 | |
b6b38f70 | 4861 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4862 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4863 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4864 | |
fec4585f | 4865 | /* parse returned result into more usable form */ |
a1fe78f1 | 4866 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4867 | target_nodes, nls_codepage, remap, |
4868 | searchName); | |
c2cf07d5 | 4869 | |
1da177e4 | 4870 | GetDFSRefExit: |
0d817bc0 | 4871 | cifs_buf_release(pSMB); |
1da177e4 LT |
4872 | |
4873 | if (rc == -EAGAIN) | |
4874 | goto getDFSRetry; | |
4875 | ||
4876 | return rc; | |
4877 | } | |
4878 | ||
20962438 SF |
4879 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4880 | int | |
96daf2b0 | 4881 | SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
20962438 SF |
4882 | { |
4883 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4884 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4885 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4886 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4887 | int rc = 0; | |
4888 | int bytes_returned = 0; | |
4889 | __u16 params, byte_count; | |
4890 | ||
b6b38f70 | 4891 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4892 | oldQFSInfoRetry: |
4893 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4894 | (void **) &pSMBr); | |
4895 | if (rc) | |
4896 | return rc; | |
20962438 SF |
4897 | |
4898 | params = 2; /* level */ | |
4899 | pSMB->TotalDataCount = 0; | |
4900 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4901 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4902 | pSMB->MaxSetupCount = 0; | |
4903 | pSMB->Reserved = 0; | |
4904 | pSMB->Flags = 0; | |
4905 | pSMB->Timeout = 0; | |
4906 | pSMB->Reserved2 = 0; | |
4907 | byte_count = params + 1 /* pad */ ; | |
4908 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4909 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4910 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4911 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4912 | pSMB->DataCount = 0; | |
4913 | pSMB->DataOffset = 0; | |
4914 | pSMB->SetupCount = 1; | |
4915 | pSMB->Reserved3 = 0; | |
4916 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4917 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4918 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4919 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4920 | ||
4921 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4922 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4923 | if (rc) { | |
b6b38f70 | 4924 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4925 | } else { /* decode response */ |
4926 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4927 | ||
820a803f | 4928 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4929 | rc = -EIO; /* bad smb */ |
4930 | else { | |
4931 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4932 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4933 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4934 | |
50c2f753 | 4935 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4936 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4937 | FSData->f_bsize = | |
4938 | le16_to_cpu(response_data->BytesPerSector) * | |
4939 | le32_to_cpu(response_data-> | |
4940 | SectorsPerAllocationUnit); | |
4941 | FSData->f_blocks = | |
50c2f753 | 4942 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4943 | FSData->f_bfree = FSData->f_bavail = |
4944 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4945 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4946 | (unsigned long long)FSData->f_blocks, | |
4947 | (unsigned long long)FSData->f_bfree, | |
4948 | FSData->f_bsize); | |
20962438 SF |
4949 | } |
4950 | } | |
4951 | cifs_buf_release(pSMB); | |
4952 | ||
4953 | if (rc == -EAGAIN) | |
4954 | goto oldQFSInfoRetry; | |
4955 | ||
4956 | return rc; | |
4957 | } | |
4958 | ||
1da177e4 | 4959 | int |
96daf2b0 | 4960 | CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4961 | { |
4962 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4963 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4964 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4965 | FILE_SYSTEM_INFO *response_data; | |
4966 | int rc = 0; | |
4967 | int bytes_returned = 0; | |
4968 | __u16 params, byte_count; | |
4969 | ||
b6b38f70 | 4970 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4971 | QFSInfoRetry: |
4972 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4973 | (void **) &pSMBr); | |
4974 | if (rc) | |
4975 | return rc; | |
4976 | ||
4977 | params = 2; /* level */ | |
4978 | pSMB->TotalDataCount = 0; | |
4979 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4980 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4981 | pSMB->MaxSetupCount = 0; |
4982 | pSMB->Reserved = 0; | |
4983 | pSMB->Flags = 0; | |
4984 | pSMB->Timeout = 0; | |
4985 | pSMB->Reserved2 = 0; | |
4986 | byte_count = params + 1 /* pad */ ; | |
4987 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4988 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4989 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4990 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4991 | pSMB->DataCount = 0; |
4992 | pSMB->DataOffset = 0; | |
4993 | pSMB->SetupCount = 1; | |
4994 | pSMB->Reserved3 = 0; | |
4995 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4996 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4997 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4998 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4999 | ||
5000 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5001 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5002 | if (rc) { | |
b6b38f70 | 5003 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 5004 | } else { /* decode response */ |
50c2f753 | 5005 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5006 | |
820a803f | 5007 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5008 | rc = -EIO; /* bad smb */ |
5009 | else { | |
5010 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5011 | |
5012 | response_data = | |
5013 | (FILE_SYSTEM_INFO | |
5014 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5015 | data_offset); | |
5016 | FSData->f_bsize = | |
5017 | le32_to_cpu(response_data->BytesPerSector) * | |
5018 | le32_to_cpu(response_data-> | |
5019 | SectorsPerAllocationUnit); | |
5020 | FSData->f_blocks = | |
5021 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5022 | FSData->f_bfree = FSData->f_bavail = | |
5023 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
5024 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
5025 | (unsigned long long)FSData->f_blocks, | |
5026 | (unsigned long long)FSData->f_bfree, | |
5027 | FSData->f_bsize); | |
1da177e4 LT |
5028 | } |
5029 | } | |
5030 | cifs_buf_release(pSMB); | |
5031 | ||
5032 | if (rc == -EAGAIN) | |
5033 | goto QFSInfoRetry; | |
5034 | ||
5035 | return rc; | |
5036 | } | |
5037 | ||
5038 | int | |
96daf2b0 | 5039 | CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5040 | { |
5041 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5042 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5043 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5044 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5045 | int rc = 0; | |
5046 | int bytes_returned = 0; | |
5047 | __u16 params, byte_count; | |
5048 | ||
b6b38f70 | 5049 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
5050 | QFSAttributeRetry: |
5051 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5052 | (void **) &pSMBr); | |
5053 | if (rc) | |
5054 | return rc; | |
5055 | ||
5056 | params = 2; /* level */ | |
5057 | pSMB->TotalDataCount = 0; | |
5058 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5059 | /* BB find exact max SMB PDU from sess structure BB */ |
5060 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5061 | pSMB->MaxSetupCount = 0; |
5062 | pSMB->Reserved = 0; | |
5063 | pSMB->Flags = 0; | |
5064 | pSMB->Timeout = 0; | |
5065 | pSMB->Reserved2 = 0; | |
5066 | byte_count = params + 1 /* pad */ ; | |
5067 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5068 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5069 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5070 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5071 | pSMB->DataCount = 0; |
5072 | pSMB->DataOffset = 0; | |
5073 | pSMB->SetupCount = 1; | |
5074 | pSMB->Reserved3 = 0; | |
5075 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5076 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5077 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5078 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5079 | ||
5080 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5081 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5082 | if (rc) { | |
b6b38f70 | 5083 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
5084 | } else { /* decode response */ |
5085 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5086 | ||
820a803f | 5087 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5088 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5089 | rc = -EIO; /* bad smb */ |
5090 | } else { | |
5091 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5092 | response_data = | |
5093 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5094 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5095 | data_offset); | |
5096 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5097 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5098 | } |
5099 | } | |
5100 | cifs_buf_release(pSMB); | |
5101 | ||
5102 | if (rc == -EAGAIN) | |
5103 | goto QFSAttributeRetry; | |
5104 | ||
5105 | return rc; | |
5106 | } | |
5107 | ||
5108 | int | |
96daf2b0 | 5109 | CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5110 | { |
5111 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5112 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5113 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5114 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5115 | int rc = 0; | |
5116 | int bytes_returned = 0; | |
5117 | __u16 params, byte_count; | |
5118 | ||
b6b38f70 | 5119 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
5120 | QFSDeviceRetry: |
5121 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5122 | (void **) &pSMBr); | |
5123 | if (rc) | |
5124 | return rc; | |
5125 | ||
5126 | params = 2; /* level */ | |
5127 | pSMB->TotalDataCount = 0; | |
5128 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5129 | /* BB find exact max SMB PDU from sess structure BB */ |
5130 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5131 | pSMB->MaxSetupCount = 0; |
5132 | pSMB->Reserved = 0; | |
5133 | pSMB->Flags = 0; | |
5134 | pSMB->Timeout = 0; | |
5135 | pSMB->Reserved2 = 0; | |
5136 | byte_count = params + 1 /* pad */ ; | |
5137 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5138 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5139 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5140 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5141 | |
5142 | pSMB->DataCount = 0; | |
5143 | pSMB->DataOffset = 0; | |
5144 | pSMB->SetupCount = 1; | |
5145 | pSMB->Reserved3 = 0; | |
5146 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5147 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5148 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5149 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5150 | ||
5151 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5152 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5153 | if (rc) { | |
b6b38f70 | 5154 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
5155 | } else { /* decode response */ |
5156 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5157 | ||
820a803f JL |
5158 | if (rc || get_bcc(&pSMBr->hdr) < |
5159 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5160 | rc = -EIO; /* bad smb */ |
5161 | else { | |
5162 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5163 | response_data = | |
737b758c SF |
5164 | (FILE_SYSTEM_DEVICE_INFO *) |
5165 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5166 | data_offset); |
5167 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5168 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5169 | } |
5170 | } | |
5171 | cifs_buf_release(pSMB); | |
5172 | ||
5173 | if (rc == -EAGAIN) | |
5174 | goto QFSDeviceRetry; | |
5175 | ||
5176 | return rc; | |
5177 | } | |
5178 | ||
5179 | int | |
96daf2b0 | 5180 | CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5181 | { |
5182 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5183 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5184 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5185 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5186 | int rc = 0; | |
5187 | int bytes_returned = 0; | |
5188 | __u16 params, byte_count; | |
5189 | ||
b6b38f70 | 5190 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 5191 | QFSUnixRetry: |
f569599a JL |
5192 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5193 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5194 | if (rc) |
5195 | return rc; | |
5196 | ||
5197 | params = 2; /* level */ | |
5198 | pSMB->TotalDataCount = 0; | |
5199 | pSMB->DataCount = 0; | |
5200 | pSMB->DataOffset = 0; | |
5201 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5202 | /* BB find exact max SMB PDU from sess structure BB */ |
5203 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5204 | pSMB->MaxSetupCount = 0; |
5205 | pSMB->Reserved = 0; | |
5206 | pSMB->Flags = 0; | |
5207 | pSMB->Timeout = 0; | |
5208 | pSMB->Reserved2 = 0; | |
5209 | byte_count = params + 1 /* pad */ ; | |
5210 | pSMB->ParameterCount = cpu_to_le16(params); | |
5211 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5212 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5213 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5214 | pSMB->SetupCount = 1; |
5215 | pSMB->Reserved3 = 0; | |
5216 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5217 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5218 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5219 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5220 | ||
5221 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5222 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5223 | if (rc) { | |
b6b38f70 | 5224 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5225 | } else { /* decode response */ |
5226 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5227 | ||
820a803f | 5228 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5229 | rc = -EIO; /* bad smb */ |
5230 | } else { | |
5231 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5232 | response_data = | |
5233 | (FILE_SYSTEM_UNIX_INFO | |
5234 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5235 | data_offset); | |
5236 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5237 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5238 | } |
5239 | } | |
5240 | cifs_buf_release(pSMB); | |
5241 | ||
5242 | if (rc == -EAGAIN) | |
5243 | goto QFSUnixRetry; | |
5244 | ||
5245 | ||
5246 | return rc; | |
5247 | } | |
5248 | ||
ac67055e | 5249 | int |
96daf2b0 | 5250 | CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5251 | { |
5252 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5253 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5254 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5255 | int rc = 0; | |
5256 | int bytes_returned = 0; | |
5257 | __u16 params, param_offset, offset, byte_count; | |
5258 | ||
b6b38f70 | 5259 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 5260 | SETFSUnixRetry: |
f26282c9 | 5261 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5262 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5263 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5264 | if (rc) |
5265 | return rc; | |
5266 | ||
5267 | params = 4; /* 2 bytes zero followed by info level. */ | |
5268 | pSMB->MaxSetupCount = 0; | |
5269 | pSMB->Reserved = 0; | |
5270 | pSMB->Flags = 0; | |
5271 | pSMB->Timeout = 0; | |
5272 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5273 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5274 | - 4; | |
ac67055e JA |
5275 | offset = param_offset + params; |
5276 | ||
5277 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5278 | /* BB find exact max SMB PDU from sess structure BB */ |
5279 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5280 | pSMB->SetupCount = 1; |
5281 | pSMB->Reserved3 = 0; | |
5282 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5283 | byte_count = 1 /* pad */ + params + 12; | |
5284 | ||
5285 | pSMB->DataCount = cpu_to_le16(12); | |
5286 | pSMB->ParameterCount = cpu_to_le16(params); | |
5287 | pSMB->TotalDataCount = pSMB->DataCount; | |
5288 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5289 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5290 | pSMB->DataOffset = cpu_to_le16(offset); | |
5291 | ||
5292 | /* Params. */ | |
5293 | pSMB->FileNum = 0; | |
5294 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5295 | ||
5296 | /* Data. */ | |
5297 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5298 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5299 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5300 | ||
be8e3b00 | 5301 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5302 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5303 | ||
5304 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5305 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5306 | if (rc) { | |
b6b38f70 | 5307 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
5308 | } else { /* decode response */ |
5309 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5310 | if (rc) |
ac67055e | 5311 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5312 | } |
5313 | cifs_buf_release(pSMB); | |
5314 | ||
5315 | if (rc == -EAGAIN) | |
5316 | goto SETFSUnixRetry; | |
5317 | ||
5318 | return rc; | |
5319 | } | |
5320 | ||
5321 | ||
1da177e4 LT |
5322 | |
5323 | int | |
96daf2b0 | 5324 | CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon, |
737b758c | 5325 | struct kstatfs *FSData) |
1da177e4 LT |
5326 | { |
5327 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5328 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5329 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5330 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5331 | int rc = 0; | |
5332 | int bytes_returned = 0; | |
5333 | __u16 params, byte_count; | |
5334 | ||
b6b38f70 | 5335 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5336 | QFSPosixRetry: |
5337 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5338 | (void **) &pSMBr); | |
5339 | if (rc) | |
5340 | return rc; | |
5341 | ||
5342 | params = 2; /* level */ | |
5343 | pSMB->TotalDataCount = 0; | |
5344 | pSMB->DataCount = 0; | |
5345 | pSMB->DataOffset = 0; | |
5346 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5347 | /* BB find exact max SMB PDU from sess structure BB */ |
5348 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5349 | pSMB->MaxSetupCount = 0; |
5350 | pSMB->Reserved = 0; | |
5351 | pSMB->Flags = 0; | |
5352 | pSMB->Timeout = 0; | |
5353 | pSMB->Reserved2 = 0; | |
5354 | byte_count = params + 1 /* pad */ ; | |
5355 | pSMB->ParameterCount = cpu_to_le16(params); | |
5356 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5357 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5358 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5359 | pSMB->SetupCount = 1; |
5360 | pSMB->Reserved3 = 0; | |
5361 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5362 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5363 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5364 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5365 | ||
5366 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5367 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5368 | if (rc) { | |
b6b38f70 | 5369 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5370 | } else { /* decode response */ |
5371 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5372 | ||
820a803f | 5373 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5374 | rc = -EIO; /* bad smb */ |
5375 | } else { | |
5376 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5377 | response_data = | |
5378 | (FILE_SYSTEM_POSIX_INFO | |
5379 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5380 | data_offset); | |
5381 | FSData->f_bsize = | |
5382 | le32_to_cpu(response_data->BlockSize); | |
5383 | FSData->f_blocks = | |
5384 | le64_to_cpu(response_data->TotalBlocks); | |
5385 | FSData->f_bfree = | |
5386 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5387 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5388 | FSData->f_bavail = FSData->f_bfree; |
5389 | } else { | |
5390 | FSData->f_bavail = | |
50c2f753 | 5391 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5392 | } |
790fe579 | 5393 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5394 | FSData->f_files = |
50c2f753 | 5395 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5396 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5397 | FSData->f_ffree = |
50c2f753 | 5398 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5399 | } |
5400 | } | |
5401 | cifs_buf_release(pSMB); | |
5402 | ||
5403 | if (rc == -EAGAIN) | |
5404 | goto QFSPosixRetry; | |
5405 | ||
5406 | return rc; | |
5407 | } | |
5408 | ||
5409 | ||
50c2f753 SF |
5410 | /* We can not use write of zero bytes trick to |
5411 | set file size due to need for large file support. Also note that | |
5412 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5413 | routine which is only needed to work around a sharing violation bug |
5414 | in Samba which this routine can run into */ | |
5415 | ||
5416 | int | |
96daf2b0 | 5417 | CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName, |
4b18f2a9 | 5418 | __u64 size, bool SetAllocation, |
737b758c | 5419 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5420 | { |
5421 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5422 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5423 | struct file_end_of_file_info *parm_data; | |
5424 | int name_len; | |
5425 | int rc = 0; | |
5426 | int bytes_returned = 0; | |
5427 | __u16 params, byte_count, data_count, param_offset, offset; | |
5428 | ||
b6b38f70 | 5429 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5430 | SetEOFRetry: |
5431 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5432 | (void **) &pSMBr); | |
5433 | if (rc) | |
5434 | return rc; | |
5435 | ||
5436 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5437 | name_len = | |
acbbb76a SF |
5438 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5439 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5440 | name_len++; /* trailing null */ |
5441 | name_len *= 2; | |
3e87d803 | 5442 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5443 | name_len = strnlen(fileName, PATH_MAX); |
5444 | name_len++; /* trailing null */ | |
5445 | strncpy(pSMB->FileName, fileName, name_len); | |
5446 | } | |
5447 | params = 6 + name_len; | |
26f57364 | 5448 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5449 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5450 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5451 | pSMB->MaxSetupCount = 0; |
5452 | pSMB->Reserved = 0; | |
5453 | pSMB->Flags = 0; | |
5454 | pSMB->Timeout = 0; | |
5455 | pSMB->Reserved2 = 0; | |
5456 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5457 | InformationLevel) - 4; |
1da177e4 | 5458 | offset = param_offset + params; |
790fe579 | 5459 | if (SetAllocation) { |
50c2f753 SF |
5460 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5461 | pSMB->InformationLevel = | |
5462 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5463 | else | |
5464 | pSMB->InformationLevel = | |
5465 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5466 | } else /* Set File Size */ { | |
1da177e4 LT |
5467 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5468 | pSMB->InformationLevel = | |
50c2f753 | 5469 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5470 | else |
5471 | pSMB->InformationLevel = | |
50c2f753 | 5472 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5473 | } |
5474 | ||
5475 | parm_data = | |
5476 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5477 | offset); | |
5478 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5479 | pSMB->DataOffset = cpu_to_le16(offset); | |
5480 | pSMB->SetupCount = 1; | |
5481 | pSMB->Reserved3 = 0; | |
5482 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5483 | byte_count = 3 /* pad */ + params + data_count; | |
5484 | pSMB->DataCount = cpu_to_le16(data_count); | |
5485 | pSMB->TotalDataCount = pSMB->DataCount; | |
5486 | pSMB->ParameterCount = cpu_to_le16(params); | |
5487 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5488 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5489 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5490 | parm_data->FileSize = cpu_to_le64(size); |
5491 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5492 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5493 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5494 | if (rc) |
b6b38f70 | 5495 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5496 | |
5497 | cifs_buf_release(pSMB); | |
5498 | ||
5499 | if (rc == -EAGAIN) | |
5500 | goto SetEOFRetry; | |
5501 | ||
5502 | return rc; | |
5503 | } | |
5504 | ||
5505 | int | |
96daf2b0 | 5506 | CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size, |
4b18f2a9 | 5507 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5508 | { |
5509 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5510 | struct file_end_of_file_info *parm_data; |
5511 | int rc = 0; | |
1da177e4 LT |
5512 | __u16 params, param_offset, offset, byte_count, count; |
5513 | ||
b6b38f70 JP |
5514 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5515 | (long long)size); | |
cd63499c SF |
5516 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5517 | ||
1da177e4 LT |
5518 | if (rc) |
5519 | return rc; | |
5520 | ||
5521 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5522 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5523 | |
1da177e4 LT |
5524 | params = 6; |
5525 | pSMB->MaxSetupCount = 0; | |
5526 | pSMB->Reserved = 0; | |
5527 | pSMB->Flags = 0; | |
5528 | pSMB->Timeout = 0; | |
5529 | pSMB->Reserved2 = 0; | |
5530 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5531 | offset = param_offset + params; | |
5532 | ||
1da177e4 LT |
5533 | count = sizeof(struct file_end_of_file_info); |
5534 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5535 | /* BB find exact max SMB PDU from sess structure BB */ |
5536 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5537 | pSMB->SetupCount = 1; |
5538 | pSMB->Reserved3 = 0; | |
5539 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5540 | byte_count = 3 /* pad */ + params + count; | |
5541 | pSMB->DataCount = cpu_to_le16(count); | |
5542 | pSMB->ParameterCount = cpu_to_le16(params); | |
5543 | pSMB->TotalDataCount = pSMB->DataCount; | |
5544 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5545 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5546 | parm_data = | |
50c2f753 SF |
5547 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5548 | + offset); | |
1da177e4 LT |
5549 | pSMB->DataOffset = cpu_to_le16(offset); |
5550 | parm_data->FileSize = cpu_to_le64(size); | |
5551 | pSMB->Fid = fid; | |
790fe579 | 5552 | if (SetAllocation) { |
1da177e4 LT |
5553 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5554 | pSMB->InformationLevel = | |
5555 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5556 | else | |
5557 | pSMB->InformationLevel = | |
5558 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5559 | } else /* Set File Size */ { |
1da177e4 LT |
5560 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5561 | pSMB->InformationLevel = | |
50c2f753 | 5562 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5563 | else |
5564 | pSMB->InformationLevel = | |
50c2f753 | 5565 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5566 | } |
5567 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5568 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5569 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5570 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5571 | if (rc) { |
b6b38f70 | 5572 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5573 | } |
5574 | ||
50c2f753 | 5575 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5576 | since file handle passed in no longer valid */ |
5577 | ||
5578 | return rc; | |
5579 | } | |
5580 | ||
50c2f753 | 5581 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5582 | an open handle, rather than by pathname - this is awkward due to |
5583 | potential access conflicts on the open, but it is unavoidable for these | |
5584 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5585 | time and resort to the original setpathinfo level which takes the ancient | |
5586 | DOS time format with 2 second granularity */ | |
5587 | int | |
96daf2b0 | 5588 | CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5589 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5590 | { |
5591 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5592 | char *data_offset; |
5593 | int rc = 0; | |
1da177e4 LT |
5594 | __u16 params, param_offset, offset, byte_count, count; |
5595 | ||
b6b38f70 | 5596 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5597 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5598 | ||
1da177e4 LT |
5599 | if (rc) |
5600 | return rc; | |
5601 | ||
2dd2dfa0 JL |
5602 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5603 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5604 | |
1da177e4 LT |
5605 | params = 6; |
5606 | pSMB->MaxSetupCount = 0; | |
5607 | pSMB->Reserved = 0; | |
5608 | pSMB->Flags = 0; | |
5609 | pSMB->Timeout = 0; | |
5610 | pSMB->Reserved2 = 0; | |
5611 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5612 | offset = param_offset + params; | |
5613 | ||
b2a3ad9c JL |
5614 | data_offset = (char *)pSMB + |
5615 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5616 | |
26f57364 | 5617 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5618 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5619 | /* BB find max SMB PDU from sess */ |
5620 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5621 | pSMB->SetupCount = 1; |
5622 | pSMB->Reserved3 = 0; | |
5623 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5624 | byte_count = 3 /* pad */ + params + count; | |
5625 | pSMB->DataCount = cpu_to_le16(count); | |
5626 | pSMB->ParameterCount = cpu_to_le16(params); | |
5627 | pSMB->TotalDataCount = pSMB->DataCount; | |
5628 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5629 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5630 | pSMB->DataOffset = cpu_to_le16(offset); | |
5631 | pSMB->Fid = fid; | |
5632 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5633 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5634 | else | |
5635 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5636 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5637 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5638 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5639 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5640 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5641 | if (rc) |
b6b38f70 | 5642 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5643 | |
50c2f753 | 5644 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5645 | since file handle passed in no longer valid */ |
5646 | ||
5647 | return rc; | |
5648 | } | |
5649 | ||
6d22f098 | 5650 | int |
96daf2b0 | 5651 | CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5652 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5653 | { | |
5654 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5655 | char *data_offset; | |
5656 | int rc = 0; | |
5657 | __u16 params, param_offset, offset, byte_count, count; | |
5658 | ||
b6b38f70 | 5659 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5660 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5661 | ||
5662 | if (rc) | |
5663 | return rc; | |
5664 | ||
5665 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5666 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5667 | ||
5668 | params = 6; | |
5669 | pSMB->MaxSetupCount = 0; | |
5670 | pSMB->Reserved = 0; | |
5671 | pSMB->Flags = 0; | |
5672 | pSMB->Timeout = 0; | |
5673 | pSMB->Reserved2 = 0; | |
5674 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5675 | offset = param_offset + params; | |
5676 | ||
5677 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5678 | ||
5679 | count = 1; | |
5680 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5681 | /* BB find max SMB PDU from sess */ | |
5682 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5683 | pSMB->SetupCount = 1; | |
5684 | pSMB->Reserved3 = 0; | |
5685 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5686 | byte_count = 3 /* pad */ + params + count; | |
5687 | pSMB->DataCount = cpu_to_le16(count); | |
5688 | pSMB->ParameterCount = cpu_to_le16(params); | |
5689 | pSMB->TotalDataCount = pSMB->DataCount; | |
5690 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5691 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5692 | pSMB->DataOffset = cpu_to_le16(offset); | |
5693 | pSMB->Fid = fid; | |
5694 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5695 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5696 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5697 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5698 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5699 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5700 | if (rc) |
b6b38f70 | 5701 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5702 | |
5703 | return rc; | |
5704 | } | |
1da177e4 LT |
5705 | |
5706 | int | |
96daf2b0 | 5707 | CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5708 | const char *fileName, const FILE_BASIC_INFO *data, |
5709 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5710 | { |
5711 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5712 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5713 | int name_len; | |
5714 | int rc = 0; | |
5715 | int bytes_returned = 0; | |
5716 | char *data_offset; | |
5717 | __u16 params, param_offset, offset, byte_count, count; | |
5718 | ||
b6b38f70 | 5719 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5720 | |
5721 | SetTimesRetry: | |
5722 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5723 | (void **) &pSMBr); | |
5724 | if (rc) | |
5725 | return rc; | |
5726 | ||
5727 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5728 | name_len = | |
acbbb76a SF |
5729 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5730 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5731 | name_len++; /* trailing null */ |
5732 | name_len *= 2; | |
50c2f753 | 5733 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5734 | name_len = strnlen(fileName, PATH_MAX); |
5735 | name_len++; /* trailing null */ | |
5736 | strncpy(pSMB->FileName, fileName, name_len); | |
5737 | } | |
5738 | ||
5739 | params = 6 + name_len; | |
26f57364 | 5740 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5741 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5742 | /* BB find max SMB PDU from sess structure BB */ |
5743 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5744 | pSMB->MaxSetupCount = 0; |
5745 | pSMB->Reserved = 0; | |
5746 | pSMB->Flags = 0; | |
5747 | pSMB->Timeout = 0; | |
5748 | pSMB->Reserved2 = 0; | |
5749 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5750 | InformationLevel) - 4; |
1da177e4 LT |
5751 | offset = param_offset + params; |
5752 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5753 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5754 | pSMB->DataOffset = cpu_to_le16(offset); | |
5755 | pSMB->SetupCount = 1; | |
5756 | pSMB->Reserved3 = 0; | |
5757 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5758 | byte_count = 3 /* pad */ + params + count; | |
5759 | ||
5760 | pSMB->DataCount = cpu_to_le16(count); | |
5761 | pSMB->ParameterCount = cpu_to_le16(params); | |
5762 | pSMB->TotalDataCount = pSMB->DataCount; | |
5763 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5764 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5765 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5766 | else | |
5767 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5768 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5769 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5770 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5771 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5772 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5773 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5774 | if (rc) |
b6b38f70 | 5775 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5776 | |
5777 | cifs_buf_release(pSMB); | |
5778 | ||
5779 | if (rc == -EAGAIN) | |
5780 | goto SetTimesRetry; | |
5781 | ||
5782 | return rc; | |
5783 | } | |
5784 | ||
5785 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5786 | /* Can be used to set attributes */ | |
5787 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5788 | handling it anyway and NT4 was what we thought it would be needed for | |
5789 | Do not delete it until we prove whether needed for Win9x though */ | |
5790 | int | |
96daf2b0 | 5791 | CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5792 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5793 | { | |
5794 | SETATTR_REQ *pSMB = NULL; | |
5795 | SETATTR_RSP *pSMBr = NULL; | |
5796 | int rc = 0; | |
5797 | int bytes_returned; | |
5798 | int name_len; | |
5799 | ||
b6b38f70 | 5800 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5801 | |
5802 | SetAttrLgcyRetry: | |
5803 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5804 | (void **) &pSMBr); | |
5805 | if (rc) | |
5806 | return rc; | |
5807 | ||
5808 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5809 | name_len = | |
acbbb76a SF |
5810 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5811 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5812 | name_len++; /* trailing null */ |
5813 | name_len *= 2; | |
50c2f753 | 5814 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5815 | name_len = strnlen(fileName, PATH_MAX); |
5816 | name_len++; /* trailing null */ | |
5817 | strncpy(pSMB->fileName, fileName, name_len); | |
5818 | } | |
5819 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5820 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5821 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5822 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5823 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5824 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5825 | if (rc) |
b6b38f70 | 5826 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5827 | |
5828 | cifs_buf_release(pSMB); | |
5829 | ||
5830 | if (rc == -EAGAIN) | |
5831 | goto SetAttrLgcyRetry; | |
5832 | ||
5833 | return rc; | |
5834 | } | |
5835 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5836 | ||
654cf14a JL |
5837 | static void |
5838 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5839 | const struct cifs_unix_set_info_args *args) | |
5840 | { | |
5841 | u64 mode = args->mode; | |
5842 | ||
5843 | /* | |
5844 | * Samba server ignores set of file size to zero due to bugs in some | |
5845 | * older clients, but we should be precise - we use SetFileSize to | |
5846 | * set file size and do not want to truncate file size to zero | |
25985edc | 5847 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5848 | * zero instead of -1 here |
5849 | */ | |
5850 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5851 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5852 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5853 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5854 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5855 | data_offset->Uid = cpu_to_le64(args->uid); | |
5856 | data_offset->Gid = cpu_to_le64(args->gid); | |
5857 | /* better to leave device as zero when it is */ | |
5858 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5859 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5860 | data_offset->Permissions = cpu_to_le64(mode); | |
5861 | ||
5862 | if (S_ISREG(mode)) | |
5863 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5864 | else if (S_ISDIR(mode)) | |
5865 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5866 | else if (S_ISLNK(mode)) | |
5867 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5868 | else if (S_ISCHR(mode)) | |
5869 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5870 | else if (S_ISBLK(mode)) | |
5871 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5872 | else if (S_ISFIFO(mode)) | |
5873 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5874 | else if (S_ISSOCK(mode)) | |
5875 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5876 | } | |
5877 | ||
3bbeeb3c | 5878 | int |
96daf2b0 | 5879 | CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5880 | const struct cifs_unix_set_info_args *args, |
5881 | u16 fid, u32 pid_of_opener) | |
5882 | { | |
5883 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5884 | char *data_offset; |
3bbeeb3c JL |
5885 | int rc = 0; |
5886 | u16 params, param_offset, offset, byte_count, count; | |
5887 | ||
b6b38f70 | 5888 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5889 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5890 | ||
5891 | if (rc) | |
5892 | return rc; | |
5893 | ||
5894 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5895 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5896 | ||
5897 | params = 6; | |
5898 | pSMB->MaxSetupCount = 0; | |
5899 | pSMB->Reserved = 0; | |
5900 | pSMB->Flags = 0; | |
5901 | pSMB->Timeout = 0; | |
5902 | pSMB->Reserved2 = 0; | |
5903 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5904 | offset = param_offset + params; | |
5905 | ||
b2a3ad9c JL |
5906 | data_offset = (char *)pSMB + |
5907 | offsetof(struct smb_hdr, Protocol) + offset; | |
5908 | ||
3bbeeb3c JL |
5909 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5910 | ||
5911 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5912 | /* BB find max SMB PDU from sess */ | |
5913 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5914 | pSMB->SetupCount = 1; | |
5915 | pSMB->Reserved3 = 0; | |
5916 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5917 | byte_count = 3 /* pad */ + params + count; | |
5918 | pSMB->DataCount = cpu_to_le16(count); | |
5919 | pSMB->ParameterCount = cpu_to_le16(params); | |
5920 | pSMB->TotalDataCount = pSMB->DataCount; | |
5921 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5922 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5923 | pSMB->DataOffset = cpu_to_le16(offset); | |
5924 | pSMB->Fid = fid; | |
5925 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5926 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5927 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5928 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5929 | ||
b2a3ad9c | 5930 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5931 | |
792af7b0 | 5932 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5933 | if (rc) |
b6b38f70 | 5934 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5935 | |
5936 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5937 | since file handle passed in no longer valid */ | |
5938 | ||
5939 | return rc; | |
5940 | } | |
5941 | ||
1da177e4 | 5942 | int |
96daf2b0 | 5943 | CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName, |
01ea95e3 JL |
5944 | const struct cifs_unix_set_info_args *args, |
5945 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5946 | { |
5947 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5948 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5949 | int name_len; | |
5950 | int rc = 0; | |
5951 | int bytes_returned = 0; | |
5952 | FILE_UNIX_BASIC_INFO *data_offset; | |
5953 | __u16 params, param_offset, offset, count, byte_count; | |
5954 | ||
b6b38f70 | 5955 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5956 | setPermsRetry: |
5957 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5958 | (void **) &pSMBr); | |
5959 | if (rc) | |
5960 | return rc; | |
5961 | ||
5962 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5963 | name_len = | |
acbbb76a SF |
5964 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5965 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5966 | name_len++; /* trailing null */ |
5967 | name_len *= 2; | |
3e87d803 | 5968 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5969 | name_len = strnlen(fileName, PATH_MAX); |
5970 | name_len++; /* trailing null */ | |
5971 | strncpy(pSMB->FileName, fileName, name_len); | |
5972 | } | |
5973 | ||
5974 | params = 6 + name_len; | |
26f57364 | 5975 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5976 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5977 | /* BB find max SMB PDU from sess structure BB */ |
5978 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5979 | pSMB->MaxSetupCount = 0; |
5980 | pSMB->Reserved = 0; | |
5981 | pSMB->Flags = 0; | |
5982 | pSMB->Timeout = 0; | |
5983 | pSMB->Reserved2 = 0; | |
5984 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5985 | InformationLevel) - 4; |
1da177e4 LT |
5986 | offset = param_offset + params; |
5987 | data_offset = | |
5988 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5989 | offset); | |
5990 | memset(data_offset, 0, count); | |
5991 | pSMB->DataOffset = cpu_to_le16(offset); | |
5992 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5993 | pSMB->SetupCount = 1; | |
5994 | pSMB->Reserved3 = 0; | |
5995 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5996 | byte_count = 3 /* pad */ + params + count; | |
5997 | pSMB->ParameterCount = cpu_to_le16(params); | |
5998 | pSMB->DataCount = cpu_to_le16(count); | |
5999 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6000 | pSMB->TotalDataCount = pSMB->DataCount; | |
6001 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6002 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6003 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6004 | |
654cf14a | 6005 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6006 | |
6007 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6008 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6009 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6010 | if (rc) |
b6b38f70 | 6011 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 6012 | |
0d817bc0 | 6013 | cifs_buf_release(pSMB); |
1da177e4 LT |
6014 | if (rc == -EAGAIN) |
6015 | goto setPermsRetry; | |
6016 | return rc; | |
6017 | } | |
6018 | ||
1da177e4 | 6019 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6020 | /* |
6021 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6022 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6023 | * it looks for that attribute name and stuffs that value into the EAData | |
6024 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6025 | * buffer. In both cases, the return value is either the length of the | |
6026 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6027 | * the data isn't copied to it, but the length is returned. | |
6028 | */ | |
1da177e4 | 6029 | ssize_t |
96daf2b0 | 6030 | CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6031 | const unsigned char *searchName, const unsigned char *ea_name, |
6032 | char *EAData, size_t buf_size, | |
6033 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6034 | { |
6035 | /* BB assumes one setup word */ | |
6036 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6037 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6038 | int rc = 0; | |
6039 | int bytes_returned; | |
6e462b9f | 6040 | int list_len; |
f0d3868b | 6041 | struct fealist *ea_response_data; |
50c2f753 SF |
6042 | struct fea *temp_fea; |
6043 | char *temp_ptr; | |
0cd126b5 | 6044 | char *end_of_smb; |
f0d3868b | 6045 | __u16 params, byte_count, data_offset; |
5980fc96 | 6046 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6047 | |
b6b38f70 | 6048 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
6049 | QAllEAsRetry: |
6050 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6051 | (void **) &pSMBr); | |
6052 | if (rc) | |
6053 | return rc; | |
6054 | ||
6055 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6056 | list_len = |
acbbb76a SF |
6057 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6058 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6059 | list_len++; /* trailing null */ |
6060 | list_len *= 2; | |
1da177e4 | 6061 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6062 | list_len = strnlen(searchName, PATH_MAX); |
6063 | list_len++; /* trailing null */ | |
6064 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6065 | } |
6066 | ||
6e462b9f | 6067 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6068 | pSMB->TotalDataCount = 0; |
6069 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6070 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6071 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6072 | pSMB->MaxSetupCount = 0; |
6073 | pSMB->Reserved = 0; | |
6074 | pSMB->Flags = 0; | |
6075 | pSMB->Timeout = 0; | |
6076 | pSMB->Reserved2 = 0; | |
6077 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6078 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6079 | pSMB->DataCount = 0; |
6080 | pSMB->DataOffset = 0; | |
6081 | pSMB->SetupCount = 1; | |
6082 | pSMB->Reserved3 = 0; | |
6083 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6084 | byte_count = params + 1 /* pad */ ; | |
6085 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6086 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6087 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6088 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6089 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6090 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6091 | ||
6092 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6093 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6094 | if (rc) { | |
b6b38f70 | 6095 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
6096 | goto QAllEAsOut; |
6097 | } | |
1da177e4 | 6098 | |
f0d3868b JL |
6099 | |
6100 | /* BB also check enough total bytes returned */ | |
6101 | /* BB we need to improve the validity checking | |
6102 | of these trans2 responses */ | |
6103 | ||
6104 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6105 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6106 | rc = -EIO; /* bad smb */ |
6107 | goto QAllEAsOut; | |
6108 | } | |
6109 | ||
6110 | /* check that length of list is not more than bcc */ | |
6111 | /* check that each entry does not go beyond length | |
6112 | of list */ | |
6113 | /* check that each element of each entry does not | |
6114 | go beyond end of list */ | |
6115 | /* validate_trans2_offsets() */ | |
6116 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6117 | ||
6118 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6119 | ea_response_data = (struct fealist *) | |
6120 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6121 | ||
6e462b9f | 6122 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 6123 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 6124 | if (list_len <= 8) { |
b6b38f70 | 6125 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
6126 | goto QAllEAsOut; |
6127 | } | |
6128 | ||
0cd126b5 | 6129 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6130 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6131 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 6132 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
6133 | rc = -EIO; |
6134 | goto QAllEAsOut; | |
6135 | } | |
6136 | ||
f0d3868b | 6137 | /* account for ea list len */ |
6e462b9f | 6138 | list_len -= 4; |
f0d3868b JL |
6139 | temp_fea = ea_response_data->list; |
6140 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6141 | while (list_len > 0) { |
122ca007 | 6142 | unsigned int name_len; |
f0d3868b | 6143 | __u16 value_len; |
0cd126b5 | 6144 | |
6e462b9f | 6145 | list_len -= 4; |
f0d3868b | 6146 | temp_ptr += 4; |
0cd126b5 JL |
6147 | /* make sure we can read name_len and value_len */ |
6148 | if (list_len < 0) { | |
b6b38f70 | 6149 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6150 | rc = -EIO; |
6151 | goto QAllEAsOut; | |
6152 | } | |
6153 | ||
6154 | name_len = temp_fea->name_len; | |
6155 | value_len = le16_to_cpu(temp_fea->value_len); | |
6156 | list_len -= name_len + 1 + value_len; | |
6157 | if (list_len < 0) { | |
b6b38f70 | 6158 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6159 | rc = -EIO; |
6160 | goto QAllEAsOut; | |
6161 | } | |
6162 | ||
31c0519f | 6163 | if (ea_name) { |
91d065c4 | 6164 | if (ea_name_len == name_len && |
ac423446 | 6165 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6166 | temp_ptr += name_len + 1; |
6167 | rc = value_len; | |
6168 | if (buf_size == 0) | |
6169 | goto QAllEAsOut; | |
6170 | if ((size_t)value_len > buf_size) { | |
6171 | rc = -ERANGE; | |
6172 | goto QAllEAsOut; | |
6173 | } | |
6174 | memcpy(EAData, temp_ptr, value_len); | |
6175 | goto QAllEAsOut; | |
6176 | } | |
f0d3868b | 6177 | } else { |
31c0519f JL |
6178 | /* account for prefix user. and trailing null */ |
6179 | rc += (5 + 1 + name_len); | |
6180 | if (rc < (int) buf_size) { | |
6181 | memcpy(EAData, "user.", 5); | |
6182 | EAData += 5; | |
6183 | memcpy(EAData, temp_ptr, name_len); | |
6184 | EAData += name_len; | |
6185 | /* null terminate name */ | |
6186 | *EAData = 0; | |
6187 | ++EAData; | |
6188 | } else if (buf_size == 0) { | |
6189 | /* skip copy - calc size only */ | |
6190 | } else { | |
6191 | /* stop before overrun buffer */ | |
6192 | rc = -ERANGE; | |
6193 | break; | |
6194 | } | |
1da177e4 | 6195 | } |
0cd126b5 | 6196 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6197 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6198 | } |
f0d3868b | 6199 | |
31c0519f JL |
6200 | /* didn't find the named attribute */ |
6201 | if (ea_name) | |
6202 | rc = -ENODATA; | |
6203 | ||
f0d3868b | 6204 | QAllEAsOut: |
0d817bc0 | 6205 | cifs_buf_release(pSMB); |
1da177e4 LT |
6206 | if (rc == -EAGAIN) |
6207 | goto QAllEAsRetry; | |
6208 | ||
6209 | return (ssize_t)rc; | |
6210 | } | |
6211 | ||
1da177e4 | 6212 | int |
96daf2b0 | 6213 | CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName, |
50c2f753 SF |
6214 | const char *ea_name, const void *ea_value, |
6215 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
6216 | int remap) | |
1da177e4 LT |
6217 | { |
6218 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6219 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6220 | struct fealist *parm_data; | |
6221 | int name_len; | |
6222 | int rc = 0; | |
6223 | int bytes_returned = 0; | |
6224 | __u16 params, param_offset, byte_count, offset, count; | |
6225 | ||
b6b38f70 | 6226 | cFYI(1, "In SetEA"); |
1da177e4 LT |
6227 | SetEARetry: |
6228 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6229 | (void **) &pSMBr); | |
6230 | if (rc) | |
6231 | return rc; | |
6232 | ||
6233 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6234 | name_len = | |
acbbb76a SF |
6235 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6236 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6237 | name_len++; /* trailing null */ |
6238 | name_len *= 2; | |
50c2f753 | 6239 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6240 | name_len = strnlen(fileName, PATH_MAX); |
6241 | name_len++; /* trailing null */ | |
6242 | strncpy(pSMB->FileName, fileName, name_len); | |
6243 | } | |
6244 | ||
6245 | params = 6 + name_len; | |
6246 | ||
6247 | /* done calculating parms using name_len of file name, | |
6248 | now use name_len to calculate length of ea name | |
6249 | we are going to create in the inode xattrs */ | |
790fe579 | 6250 | if (ea_name == NULL) |
1da177e4 LT |
6251 | name_len = 0; |
6252 | else | |
50c2f753 | 6253 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6254 | |
dae5dbdb | 6255 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6256 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6257 | /* BB find max SMB PDU from sess */ |
6258 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6259 | pSMB->MaxSetupCount = 0; |
6260 | pSMB->Reserved = 0; | |
6261 | pSMB->Flags = 0; | |
6262 | pSMB->Timeout = 0; | |
6263 | pSMB->Reserved2 = 0; | |
6264 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6265 | InformationLevel) - 4; |
1da177e4 LT |
6266 | offset = param_offset + params; |
6267 | pSMB->InformationLevel = | |
6268 | cpu_to_le16(SMB_SET_FILE_EA); | |
6269 | ||
6270 | parm_data = | |
6271 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6272 | offset); | |
6273 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6274 | pSMB->DataOffset = cpu_to_le16(offset); | |
6275 | pSMB->SetupCount = 1; | |
6276 | pSMB->Reserved3 = 0; | |
6277 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6278 | byte_count = 3 /* pad */ + params + count; | |
6279 | pSMB->DataCount = cpu_to_le16(count); | |
6280 | parm_data->list_len = cpu_to_le32(count); | |
6281 | parm_data->list[0].EA_flags = 0; | |
6282 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6283 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6284 | /* EA names are always ASCII */ |
790fe579 | 6285 | if (ea_name) |
50c2f753 | 6286 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6287 | parm_data->list[0].name[name_len] = 0; |
6288 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6289 | /* caller ensures that ea_value_len is less than 64K but | |
6290 | we need to ensure that it fits within the smb */ | |
6291 | ||
50c2f753 SF |
6292 | /*BB add length check to see if it would fit in |
6293 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6294 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6295 | if (ea_value_len) | |
50c2f753 SF |
6296 | memcpy(parm_data->list[0].name+name_len+1, |
6297 | ea_value, ea_value_len); | |
1da177e4 LT |
6298 | |
6299 | pSMB->TotalDataCount = pSMB->DataCount; | |
6300 | pSMB->ParameterCount = cpu_to_le16(params); | |
6301 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6302 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6303 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6304 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6305 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6306 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6307 | if (rc) |
b6b38f70 | 6308 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
6309 | |
6310 | cifs_buf_release(pSMB); | |
6311 | ||
6312 | if (rc == -EAGAIN) | |
6313 | goto SetEARetry; | |
6314 | ||
6315 | return rc; | |
6316 | } | |
1da177e4 | 6317 | #endif |
0eff0e26 SF |
6318 | |
6319 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6320 | /* | |
6321 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6322 | * to allow network clients (such as Windows) to display updated | |
6323 | * lists of files in directory listings automatically when | |
6324 | * files are added by one user when another user has the | |
6325 | * same directory open on their desktop. The Linux cifs kernel | |
6326 | * client hooked into the kernel side of this interface for | |
6327 | * the same reason, but ironically when the VFS moved from | |
6328 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6329 | * network file system clients (the most obvious use case | |
6330 | * for notify interfaces is when multiple users can update | |
6331 | * the contents of the same directory - exactly what network | |
6332 | * file systems can do) although the server (Samba) could | |
6333 | * still use it. For the short term we leave the worker | |
6334 | * function ifdeffed out (below) until inotify is fixed | |
6335 | * in the VFS to make it easier to plug in network file | |
6336 | * system clients. If inotify turns out to be permanently | |
6337 | * incompatible for network fs clients, we could instead simply | |
6338 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6339 | */ | |
96daf2b0 | 6340 | int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6341 | const int notify_subdirs, const __u16 netfid, |
6342 | __u32 filter, struct file *pfile, int multishot, | |
6343 | const struct nls_table *nls_codepage) | |
6344 | { | |
6345 | int rc = 0; | |
6346 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6347 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6348 | struct dir_notify_req *dnotify_req; | |
6349 | int bytes_returned; | |
6350 | ||
6351 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6352 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6353 | (void **) &pSMBr); | |
6354 | if (rc) | |
6355 | return rc; | |
6356 | ||
6357 | pSMB->TotalParameterCount = 0 ; | |
6358 | pSMB->TotalDataCount = 0; | |
6359 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6360 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6361 | pSMB->MaxSetupCount = 4; |
6362 | pSMB->Reserved = 0; | |
6363 | pSMB->ParameterOffset = 0; | |
6364 | pSMB->DataCount = 0; | |
6365 | pSMB->DataOffset = 0; | |
6366 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6367 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6368 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6369 | if (notify_subdirs) | |
6370 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6371 | pSMB->Reserved2 = 0; | |
6372 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6373 | pSMB->Fid = netfid; /* file handle always le */ | |
6374 | pSMB->ByteCount = 0; | |
6375 | ||
6376 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6377 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6378 | CIFS_ASYNC_OP); | |
6379 | if (rc) { | |
6380 | cFYI(1, "Error in Notify = %d", rc); | |
6381 | } else { | |
6382 | /* Add file to outstanding requests */ | |
6383 | /* BB change to kmem cache alloc */ | |
6384 | dnotify_req = kmalloc( | |
6385 | sizeof(struct dir_notify_req), | |
6386 | GFP_KERNEL); | |
6387 | if (dnotify_req) { | |
6388 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6389 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6390 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6391 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6392 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6393 | dnotify_req->netfid = netfid; | |
6394 | dnotify_req->pfile = pfile; | |
6395 | dnotify_req->filter = filter; | |
6396 | dnotify_req->multishot = multishot; | |
6397 | spin_lock(&GlobalMid_Lock); | |
6398 | list_add_tail(&dnotify_req->lhead, | |
6399 | &GlobalDnotifyReqList); | |
6400 | spin_unlock(&GlobalMid_Lock); | |
6401 | } else | |
6402 | rc = -ENOMEM; | |
6403 | } | |
6404 | cifs_buf_release(pSMB); | |
6405 | return rc; | |
6406 | } | |
6407 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |