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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
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 | ||
e28bc5b1 | 89 | /* Forward declarations */ |
e28bc5b1 | 90 | |
1da177e4 LT |
91 | /* Mark as invalid, all open files on tree connections since they |
92 | were closed when session to server was lost */ | |
96daf2b0 | 93 | static void mark_open_files_invalid(struct cifs_tcon *pTcon) |
1da177e4 LT |
94 | { |
95 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
96 | struct list_head *tmp; |
97 | struct list_head *tmp1; | |
1da177e4 LT |
98 | |
99 | /* list all files open on tree connection and mark them invalid */ | |
4477288a | 100 | spin_lock(&cifs_file_list_lock); |
1da177e4 | 101 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
790fe579 | 102 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 103 | open_file->invalidHandle = true; |
3bc303c2 | 104 | open_file->oplock_break_cancelled = true; |
1da177e4 | 105 | } |
4477288a | 106 | spin_unlock(&cifs_file_list_lock); |
09d1db5c SF |
107 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
108 | to this tcon */ | |
1da177e4 LT |
109 | } |
110 | ||
9162ab20 JL |
111 | /* reconnect the socket, tcon, and smb session if needed */ |
112 | static int | |
96daf2b0 | 113 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 114 | { |
c4a5534a | 115 | int rc; |
96daf2b0 | 116 | struct cifs_ses *ses; |
9162ab20 JL |
117 | struct TCP_Server_Info *server; |
118 | struct nls_table *nls_codepage; | |
119 | ||
120 | /* | |
121 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
122 | * tcp and smb session status done differently for those three - in the | |
123 | * calling routine | |
124 | */ | |
125 | if (!tcon) | |
126 | return 0; | |
127 | ||
128 | ses = tcon->ses; | |
129 | server = ses->server; | |
130 | ||
131 | /* | |
132 | * only tree disconnect, open, and write, (and ulogoff which does not | |
133 | * have tcon) are allowed as we start force umount | |
134 | */ | |
135 | if (tcon->tidStatus == CifsExiting) { | |
136 | if (smb_command != SMB_COM_WRITE_ANDX && | |
137 | smb_command != SMB_COM_OPEN_ANDX && | |
138 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
139 | cFYI(1, "can not send cmd %d while umounting", |
140 | smb_command); | |
9162ab20 JL |
141 | return -ENODEV; |
142 | } | |
143 | } | |
144 | ||
9162ab20 JL |
145 | /* |
146 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
147 | * greater than cifs socket timeout which is 7 seconds | |
148 | */ | |
149 | while (server->tcpStatus == CifsNeedReconnect) { | |
150 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 151 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 152 | |
fd88ce93 | 153 | /* are we still trying to reconnect? */ |
9162ab20 JL |
154 | if (server->tcpStatus != CifsNeedReconnect) |
155 | break; | |
156 | ||
157 | /* | |
158 | * on "soft" mounts we wait once. Hard mounts keep | |
159 | * retrying until process is killed or server comes | |
160 | * back on-line | |
161 | */ | |
d402539b | 162 | if (!tcon->retry) { |
b6b38f70 | 163 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
164 | return -EHOSTDOWN; |
165 | } | |
166 | } | |
167 | ||
168 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
169 | return 0; | |
170 | ||
171 | nls_codepage = load_nls_default(); | |
172 | ||
173 | /* | |
174 | * need to prevent multiple threads trying to simultaneously | |
175 | * reconnect the same SMB session | |
176 | */ | |
d7b619cf | 177 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
178 | rc = cifs_negotiate_protocol(0, ses); |
179 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
180 | rc = cifs_setup_session(0, ses, nls_codepage); |
181 | ||
182 | /* do we need to reconnect tcon? */ | |
183 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 184 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
185 | goto out; |
186 | } | |
187 | ||
188 | mark_open_files_invalid(tcon); | |
189 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 190 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 191 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
192 | |
193 | if (rc) | |
194 | goto out; | |
195 | ||
196 | /* | |
197 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
198 | * size shrinking | |
199 | */ | |
200 | atomic_inc(&tconInfoReconnectCount); | |
201 | ||
202 | /* tell server Unix caps we support */ | |
203 | if (ses->capabilities & CAP_UNIX) | |
204 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
205 | ||
206 | /* | |
207 | * Removed call to reopen open files here. It is safer (and faster) to | |
208 | * reopen files one at a time as needed in read and write. | |
209 | * | |
210 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
211 | */ | |
212 | ||
213 | out: | |
214 | /* | |
215 | * Check if handle based operation so we know whether we can continue | |
216 | * or not without returning to caller to reset file handle | |
217 | */ | |
218 | switch (smb_command) { | |
219 | case SMB_COM_READ_ANDX: | |
220 | case SMB_COM_WRITE_ANDX: | |
221 | case SMB_COM_CLOSE: | |
222 | case SMB_COM_FIND_CLOSE2: | |
223 | case SMB_COM_LOCKING_ANDX: | |
224 | rc = -EAGAIN; | |
225 | } | |
226 | ||
227 | unload_nls(nls_codepage); | |
228 | return rc; | |
229 | } | |
230 | ||
ad7a2926 SF |
231 | /* Allocate and return pointer to an SMB request buffer, and set basic |
232 | SMB information in the SMB header. If the return code is zero, this | |
233 | function must have filled in request_buf pointer */ | |
1da177e4 | 234 | static int |
96daf2b0 | 235 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 236 | void **request_buf) |
1da177e4 | 237 | { |
f569599a | 238 | int rc; |
1da177e4 | 239 | |
9162ab20 | 240 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 241 | if (rc) |
1da177e4 LT |
242 | return rc; |
243 | ||
244 | *request_buf = cifs_small_buf_get(); | |
245 | if (*request_buf == NULL) { | |
246 | /* BB should we add a retry in here if not a writepage? */ | |
247 | return -ENOMEM; | |
248 | } | |
249 | ||
63135e08 | 250 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 251 | tcon, wct); |
1da177e4 | 252 | |
790fe579 SF |
253 | if (tcon != NULL) |
254 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 255 | |
f569599a | 256 | return 0; |
5815449d SF |
257 | } |
258 | ||
12b3b8ff | 259 | int |
50c2f753 | 260 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 261 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
262 | { |
263 | int rc; | |
50c2f753 | 264 | struct smb_hdr *buffer; |
12b3b8ff | 265 | |
5815449d | 266 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 267 | if (rc) |
12b3b8ff SF |
268 | return rc; |
269 | ||
04fdabe1 | 270 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 271 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
272 | if (ses->capabilities & CAP_UNICODE) |
273 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 274 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
275 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
276 | ||
277 | /* uid, tid can stay at zero as set in header assemble */ | |
278 | ||
50c2f753 | 279 | /* BB add support for turning on the signing when |
12b3b8ff SF |
280 | this function is used after 1st of session setup requests */ |
281 | ||
282 | return rc; | |
283 | } | |
1da177e4 LT |
284 | |
285 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
286 | static int | |
96daf2b0 | 287 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 288 | void **request_buf, void **response_buf) |
1da177e4 | 289 | { |
1da177e4 LT |
290 | *request_buf = cifs_buf_get(); |
291 | if (*request_buf == NULL) { | |
292 | /* BB should we add a retry in here if not a writepage? */ | |
293 | return -ENOMEM; | |
294 | } | |
295 | /* Although the original thought was we needed the response buf for */ | |
296 | /* potential retries of smb operations it turns out we can determine */ | |
297 | /* from the mid flags when the request buffer can be resent without */ | |
298 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 299 | if (response_buf) |
50c2f753 | 300 | *response_buf = *request_buf; |
1da177e4 LT |
301 | |
302 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 303 | wct); |
1da177e4 | 304 | |
790fe579 SF |
305 | if (tcon != NULL) |
306 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 307 | |
f569599a JL |
308 | return 0; |
309 | } | |
310 | ||
311 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
312 | static int | |
96daf2b0 | 313 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
314 | void **request_buf, void **response_buf) |
315 | { | |
316 | int rc; | |
317 | ||
318 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
319 | if (rc) | |
320 | return rc; | |
321 | ||
322 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
323 | } | |
324 | ||
325 | static int | |
96daf2b0 | 326 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
327 | void **request_buf, void **response_buf) |
328 | { | |
329 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
330 | return -EHOSTDOWN; | |
331 | ||
332 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
333 | } |
334 | ||
50c2f753 | 335 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 336 | { |
12df83c9 JL |
337 | unsigned int total_size; |
338 | ||
339 | /* check for plausible wct */ | |
340 | if (pSMB->hdr.WordCount < 10) | |
341 | goto vt2_err; | |
1da177e4 | 342 | |
1da177e4 | 343 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
344 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
345 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
346 | goto vt2_err; | |
347 | ||
12df83c9 JL |
348 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
349 | if (total_size >= 512) | |
350 | goto vt2_err; | |
351 | ||
fd5707e1 JL |
352 | /* check that bcc is at least as big as parms + data, and that it is |
353 | * less than negotiated smb buffer | |
354 | */ | |
12df83c9 JL |
355 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
356 | if (total_size > get_bcc(&pSMB->hdr) || | |
357 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
358 | goto vt2_err; | |
359 | ||
360 | return 0; | |
361 | vt2_err: | |
50c2f753 | 362 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 363 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 364 | return -EINVAL; |
1da177e4 | 365 | } |
690c522f | 366 | |
be8e3b00 SF |
367 | static inline void inc_rfc1001_len(void *pSMB, int count) |
368 | { | |
369 | struct smb_hdr *hdr = (struct smb_hdr *)pSMB; | |
370 | ||
371 | be32_add_cpu(&hdr->smb_buf_length, count); | |
372 | } | |
373 | ||
1da177e4 | 374 | int |
96daf2b0 | 375 | CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
376 | { |
377 | NEGOTIATE_REQ *pSMB; | |
378 | NEGOTIATE_RSP *pSMBr; | |
379 | int rc = 0; | |
380 | int bytes_returned; | |
3979877e | 381 | int i; |
50c2f753 | 382 | struct TCP_Server_Info *server; |
1da177e4 | 383 | u16 count; |
750d1151 | 384 | unsigned int secFlags; |
1da177e4 | 385 | |
790fe579 | 386 | if (ses->server) |
1da177e4 LT |
387 | server = ses->server; |
388 | else { | |
389 | rc = -EIO; | |
390 | return rc; | |
391 | } | |
392 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
393 | (void **) &pSMB, (void **) &pSMBr); | |
394 | if (rc) | |
395 | return rc; | |
750d1151 SF |
396 | |
397 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 398 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 399 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 400 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 401 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 402 | |
b6b38f70 | 403 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 404 | |
88257360 | 405 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 406 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 407 | |
100c1ddc | 408 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 409 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 410 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 411 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 412 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 413 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
414 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
415 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 416 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
417 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
418 | } | |
50c2f753 | 419 | |
3979877e | 420 | count = 0; |
50c2f753 | 421 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
422 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
423 | count += strlen(protocols[i].name) + 1; | |
424 | /* null at end of source and target buffers anyway */ | |
425 | } | |
be8e3b00 | 426 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
427 | pSMB->ByteCount = cpu_to_le16(count); |
428 | ||
429 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
430 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 431 | if (rc != 0) |
254e55ed SF |
432 | goto neg_err_exit; |
433 | ||
9bf67e51 JL |
434 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
435 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 436 | /* Check wct = 1 error case */ |
9bf67e51 | 437 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 438 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 439 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
440 | could not negotiate a common dialect */ |
441 | rc = -EOPNOTSUPP; | |
442 | goto neg_err_exit; | |
50c2f753 | 443 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 444 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
445 | && ((server->dialect == LANMAN_PROT) |
446 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 447 | __s16 tmp; |
50c2f753 | 448 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 449 | |
790fe579 | 450 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 451 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
452 | server->secType = LANMAN; |
453 | else { | |
b6b38f70 JP |
454 | cERROR(1, "mount failed weak security disabled" |
455 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
456 | rc = -EOPNOTSUPP; |
457 | goto neg_err_exit; | |
50c2f753 | 458 | } |
96daf2b0 | 459 | server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode); |
10b9b98e PS |
460 | server->maxReq = min_t(unsigned int, |
461 | le16_to_cpu(rsp->MaxMpxCount), | |
462 | cifs_max_pending); | |
45275789 | 463 | set_credits(server, server->maxReq); |
c974befa | 464 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
eca6acf9 | 465 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
466 | /* even though we do not use raw we might as well set this |
467 | accurately, in case we ever find a need for it */ | |
790fe579 | 468 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 469 | server->max_rw = 0xFF00; |
254e55ed SF |
470 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
471 | } else { | |
eca6acf9 | 472 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
473 | server->capabilities = CAP_MPX_MODE; |
474 | } | |
b815f1e5 | 475 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 476 | if (tmp == -1) { |
25ee4a98 SF |
477 | /* OS/2 often does not set timezone therefore |
478 | * we must use server time to calc time zone. | |
b815f1e5 SF |
479 | * Could deviate slightly from the right zone. |
480 | * Smallest defined timezone difference is 15 minutes | |
481 | * (i.e. Nepal). Rounding up/down is done to match | |
482 | * this requirement. | |
25ee4a98 | 483 | */ |
b815f1e5 | 484 | int val, seconds, remain, result; |
25ee4a98 SF |
485 | struct timespec ts, utc; |
486 | utc = CURRENT_TIME; | |
c4a2c08d JL |
487 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
488 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 489 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 490 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 491 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 492 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 493 | seconds = abs(val); |
947a5067 | 494 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 495 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 496 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 497 | result += MIN_TZ_ADJ; |
790fe579 | 498 | if (val < 0) |
ad7a2926 | 499 | result = -result; |
b815f1e5 | 500 | server->timeAdj = result; |
25ee4a98 | 501 | } else { |
b815f1e5 SF |
502 | server->timeAdj = (int)tmp; |
503 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 504 | } |
b6b38f70 | 505 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 506 | |
3979877e | 507 | |
254e55ed | 508 | /* BB get server time for time conversions and add |
50c2f753 | 509 | code to use it and timezone since this is not UTC */ |
3979877e | 510 | |
50c2f753 | 511 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 512 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 513 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 514 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 515 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
516 | rc = -EIO; /* need cryptkey unless plain text */ |
517 | goto neg_err_exit; | |
518 | } | |
3979877e | 519 | |
f19159dc | 520 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
521 | /* we will not end up setting signing flags - as no signing |
522 | was in LANMAN and server did not return the flags on */ | |
523 | goto signing_check; | |
7c7b25bc | 524 | #else /* weak security disabled */ |
790fe579 | 525 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
526 | cERROR(1, "mount failed, cifs module not built " |
527 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 528 | rc = -EOPNOTSUPP; |
7c7b25bc | 529 | #endif /* WEAK_PW_HASH */ |
254e55ed | 530 | goto neg_err_exit; |
790fe579 | 531 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
532 | /* unknown wct */ |
533 | rc = -EOPNOTSUPP; | |
534 | goto neg_err_exit; | |
535 | } | |
536 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
537 | server->sec_mode = pSMBr->SecurityMode; |
538 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 539 | cFYI(1, "share mode security"); |
bdc4bf6e | 540 | |
96daf2b0 | 541 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 542 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 543 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 544 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
545 | cERROR(1, "Server requests plain text password" |
546 | " but client support disabled"); | |
9312f675 | 547 | |
790fe579 | 548 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 549 | server->secType = NTLMv2; |
790fe579 | 550 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 551 | server->secType = NTLM; |
790fe579 | 552 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 553 | server->secType = NTLMv2; |
a013689d SF |
554 | else if (secFlags & CIFSSEC_MAY_KRB5) |
555 | server->secType = Kerberos; | |
ac683924 | 556 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 557 | server->secType = RawNTLMSSP; |
a013689d SF |
558 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
559 | server->secType = LANMAN; | |
a013689d SF |
560 | else { |
561 | rc = -EOPNOTSUPP; | |
b6b38f70 | 562 | cERROR(1, "Invalid security type"); |
a013689d SF |
563 | goto neg_err_exit; |
564 | } | |
565 | /* else ... any others ...? */ | |
254e55ed SF |
566 | |
567 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
568 | little endian */ | |
10b9b98e PS |
569 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
570 | cifs_max_pending); | |
45275789 | 571 | set_credits(server, server->maxReq); |
254e55ed | 572 | /* probably no need to store and check maxvcs */ |
c974befa | 573 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 574 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 575 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 576 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
577 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
578 | server->timeAdj *= 60; | |
254e55ed | 579 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 580 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 581 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
582 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
583 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
584 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 585 | /* decode security blob */ |
820a803f | 586 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 587 | if (count < 16) { |
254e55ed | 588 | rc = -EIO; |
e187e44e JL |
589 | goto neg_err_exit; |
590 | } | |
3f9bcca7 | 591 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 592 | if (server->srv_count > 1) { |
3f9bcca7 | 593 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
594 | if (memcmp(server->server_GUID, |
595 | pSMBr->u.extended_response. | |
596 | GUID, 16) != 0) { | |
b6b38f70 | 597 | cFYI(1, "server UID changed"); |
254e55ed | 598 | memcpy(server->server_GUID, |
e187e44e JL |
599 | pSMBr->u.extended_response.GUID, |
600 | 16); | |
601 | } | |
e7ddee90 | 602 | } else { |
3f9bcca7 | 603 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
604 | memcpy(server->server_GUID, |
605 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 606 | } |
e187e44e JL |
607 | |
608 | if (count == 16) { | |
609 | server->secType = RawNTLMSSP; | |
254e55ed SF |
610 | } else { |
611 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
612 | SecurityBlob, count - 16, |
613 | server); | |
ef571cad | 614 | if (rc == 1) |
e545937a | 615 | rc = 0; |
ef571cad | 616 | else |
254e55ed | 617 | rc = -EINVAL; |
2b149f11 SP |
618 | if (server->secType == Kerberos) { |
619 | if (!server->sec_kerberos && | |
620 | !server->sec_mskerberos) | |
621 | rc = -EOPNOTSUPP; | |
622 | } else if (server->secType == RawNTLMSSP) { | |
623 | if (!server->sec_ntlmssp) | |
624 | rc = -EOPNOTSUPP; | |
625 | } else | |
626 | rc = -EOPNOTSUPP; | |
1da177e4 | 627 | } |
96daf2b0 | 628 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
629 | rc = -EIO; /* no crypt key only if plain text pwd */ |
630 | goto neg_err_exit; | |
254e55ed SF |
631 | } else |
632 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
633 | ||
6344a423 | 634 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 635 | signing_check: |
6344a423 | 636 | #endif |
762e5ab7 SF |
637 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
638 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
639 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 640 | cFYI(1, "Signing disabled"); |
96daf2b0 | 641 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 642 | cERROR(1, "Server requires " |
7111d214 | 643 | "packet signing to be enabled in " |
b6b38f70 | 644 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
645 | rc = -EOPNOTSUPP; |
646 | } | |
96daf2b0 | 647 | server->sec_mode &= |
254e55ed | 648 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
649 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
650 | /* signing required */ | |
b6b38f70 | 651 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 652 | if ((server->sec_mode & |
762e5ab7 | 653 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 654 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 655 | rc = -EOPNOTSUPP; |
762e5ab7 | 656 | } else |
96daf2b0 | 657 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
658 | } else { |
659 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
660 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
661 | server->sec_mode &= | |
254e55ed | 662 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 663 | } |
50c2f753 SF |
664 | |
665 | neg_err_exit: | |
4a6d87f1 | 666 | cifs_buf_release(pSMB); |
254e55ed | 667 | |
b6b38f70 | 668 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
669 | return rc; |
670 | } | |
671 | ||
672 | int | |
96daf2b0 | 673 | CIFSSMBTDis(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
674 | { |
675 | struct smb_hdr *smb_buffer; | |
1da177e4 | 676 | int rc = 0; |
1da177e4 | 677 | |
b6b38f70 | 678 | cFYI(1, "In tree disconnect"); |
1da177e4 | 679 | |
f1987b44 JL |
680 | /* BB: do we need to check this? These should never be NULL. */ |
681 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
682 | return -EIO; | |
1da177e4 | 683 | |
f1987b44 JL |
684 | /* |
685 | * No need to return error on this operation if tid invalidated and | |
686 | * closed on server already e.g. due to tcp session crashing. Also, | |
687 | * the tcon is no longer on the list, so no need to take lock before | |
688 | * checking this. | |
689 | */ | |
268875b9 | 690 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 691 | return 0; |
1da177e4 | 692 | |
50c2f753 | 693 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 694 | (void **)&smb_buffer); |
f1987b44 | 695 | if (rc) |
1da177e4 | 696 | return rc; |
133672ef | 697 | |
792af7b0 | 698 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 699 | if (rc) |
b6b38f70 | 700 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 701 | |
50c2f753 | 702 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 703 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
704 | if (rc == -EAGAIN) |
705 | rc = 0; | |
706 | ||
707 | return rc; | |
708 | } | |
709 | ||
766fdbb5 JL |
710 | /* |
711 | * This is a no-op for now. We're not really interested in the reply, but | |
712 | * rather in the fact that the server sent one and that server->lstrp | |
713 | * gets updated. | |
714 | * | |
715 | * FIXME: maybe we should consider checking that the reply matches request? | |
716 | */ | |
717 | static void | |
718 | cifs_echo_callback(struct mid_q_entry *mid) | |
719 | { | |
720 | struct TCP_Server_Info *server = mid->callback_data; | |
721 | ||
722 | DeleteMidQEntry(mid); | |
45275789 | 723 | add_credits(server, 1); |
766fdbb5 JL |
724 | } |
725 | ||
726 | int | |
727 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
728 | { | |
729 | ECHO_REQ *smb; | |
730 | int rc = 0; | |
fcc31cb6 | 731 | struct kvec iov; |
766fdbb5 JL |
732 | |
733 | cFYI(1, "In echo request"); | |
734 | ||
735 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
736 | if (rc) | |
737 | return rc; | |
738 | ||
739 | /* set up echo request */ | |
5443d130 | 740 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
741 | smb->hdr.WordCount = 1; |
742 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 743 | put_bcc(1, &smb->hdr); |
766fdbb5 | 744 | smb->Data[0] = 'a'; |
be8e3b00 | 745 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
746 | iov.iov_base = smb; |
747 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 748 | |
44d22d84 JL |
749 | rc = cifs_call_async(server, &iov, 1, NULL, cifs_echo_callback, |
750 | server, true); | |
766fdbb5 JL |
751 | if (rc) |
752 | cFYI(1, "Echo request failed: %d", rc); | |
753 | ||
754 | cifs_small_buf_release(smb); | |
755 | ||
756 | return rc; | |
757 | } | |
758 | ||
1da177e4 | 759 | int |
96daf2b0 | 760 | CIFSSMBLogoff(const int xid, struct cifs_ses *ses) |
1da177e4 | 761 | { |
1da177e4 LT |
762 | LOGOFF_ANDX_REQ *pSMB; |
763 | int rc = 0; | |
1da177e4 | 764 | |
b6b38f70 | 765 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 766 | |
14fbf50d JL |
767 | /* |
768 | * BB: do we need to check validity of ses and server? They should | |
769 | * always be valid since we have an active reference. If not, that | |
770 | * should probably be a BUG() | |
771 | */ | |
772 | if (!ses || !ses->server) | |
3b795210 SF |
773 | return -EIO; |
774 | ||
d7b619cf | 775 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
776 | if (ses->need_reconnect) |
777 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
778 | already closed due to reconnect */ | |
1da177e4 LT |
779 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
780 | if (rc) { | |
d7b619cf | 781 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
782 | return rc; |
783 | } | |
784 | ||
88257360 | 785 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 786 | |
96daf2b0 | 787 | if (ses->server->sec_mode & |
1da177e4 LT |
788 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
789 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
790 | |
791 | pSMB->hdr.Uid = ses->Suid; | |
792 | ||
793 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 794 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 795 | session_already_dead: |
d7b619cf | 796 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
797 | |
798 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 799 | since server closed smb session, no sense reporting |
1da177e4 LT |
800 | error */ |
801 | if (rc == -EAGAIN) | |
802 | rc = 0; | |
803 | return rc; | |
804 | } | |
805 | ||
2d785a50 | 806 | int |
96daf2b0 | 807 | CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
2d785a50 SF |
808 | __u16 type, const struct nls_table *nls_codepage, int remap) |
809 | { | |
810 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
811 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
812 | struct unlink_psx_rq *pRqD; | |
813 | int name_len; | |
814 | int rc = 0; | |
815 | int bytes_returned = 0; | |
816 | __u16 params, param_offset, offset, byte_count; | |
817 | ||
b6b38f70 | 818 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
819 | PsxDelete: |
820 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
821 | (void **) &pSMBr); | |
822 | if (rc) | |
823 | return rc; | |
824 | ||
825 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
826 | name_len = | |
acbbb76a SF |
827 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
828 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
829 | name_len++; /* trailing null */ |
830 | name_len *= 2; | |
831 | } else { /* BB add path length overrun check */ | |
832 | name_len = strnlen(fileName, PATH_MAX); | |
833 | name_len++; /* trailing null */ | |
834 | strncpy(pSMB->FileName, fileName, name_len); | |
835 | } | |
836 | ||
837 | params = 6 + name_len; | |
838 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
839 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
840 | pSMB->MaxSetupCount = 0; | |
841 | pSMB->Reserved = 0; | |
842 | pSMB->Flags = 0; | |
843 | pSMB->Timeout = 0; | |
844 | pSMB->Reserved2 = 0; | |
845 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
846 | InformationLevel) - 4; | |
847 | offset = param_offset + params; | |
848 | ||
849 | /* Setup pointer to Request Data (inode type) */ | |
850 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
851 | pRqD->type = cpu_to_le16(type); | |
852 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
853 | pSMB->DataOffset = cpu_to_le16(offset); | |
854 | pSMB->SetupCount = 1; | |
855 | pSMB->Reserved3 = 0; | |
856 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
857 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
858 | ||
859 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
860 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
861 | pSMB->ParameterCount = cpu_to_le16(params); | |
862 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
863 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
864 | pSMB->Reserved4 = 0; | |
be8e3b00 | 865 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
866 | pSMB->ByteCount = cpu_to_le16(byte_count); |
867 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
868 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 869 | if (rc) |
b6b38f70 | 870 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
871 | cifs_buf_release(pSMB); |
872 | ||
873 | cifs_stats_inc(&tcon->num_deletes); | |
874 | ||
875 | if (rc == -EAGAIN) | |
876 | goto PsxDelete; | |
877 | ||
878 | return rc; | |
879 | } | |
880 | ||
1da177e4 | 881 | int |
96daf2b0 | 882 | CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
737b758c | 883 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
884 | { |
885 | DELETE_FILE_REQ *pSMB = NULL; | |
886 | DELETE_FILE_RSP *pSMBr = NULL; | |
887 | int rc = 0; | |
888 | int bytes_returned; | |
889 | int name_len; | |
890 | ||
891 | DelFileRetry: | |
892 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
893 | (void **) &pSMBr); | |
894 | if (rc) | |
895 | return rc; | |
896 | ||
897 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
898 | name_len = | |
acbbb76a SF |
899 | cifsConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
900 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
901 | name_len++; /* trailing null */ |
902 | name_len *= 2; | |
09d1db5c | 903 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
904 | name_len = strnlen(fileName, PATH_MAX); |
905 | name_len++; /* trailing null */ | |
906 | strncpy(pSMB->fileName, fileName, name_len); | |
907 | } | |
908 | pSMB->SearchAttributes = | |
909 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
910 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 911 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
912 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
913 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
914 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 915 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 916 | if (rc) |
b6b38f70 | 917 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
918 | |
919 | cifs_buf_release(pSMB); | |
920 | if (rc == -EAGAIN) | |
921 | goto DelFileRetry; | |
922 | ||
923 | return rc; | |
924 | } | |
925 | ||
926 | int | |
96daf2b0 | 927 | CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName, |
737b758c | 928 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
929 | { |
930 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
931 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
932 | int rc = 0; | |
933 | int bytes_returned; | |
934 | int name_len; | |
935 | ||
b6b38f70 | 936 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
937 | RmDirRetry: |
938 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
939 | (void **) &pSMBr); | |
940 | if (rc) | |
941 | return rc; | |
942 | ||
943 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
944 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, dirName, |
945 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
946 | name_len++; /* trailing null */ |
947 | name_len *= 2; | |
09d1db5c | 948 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
949 | name_len = strnlen(dirName, PATH_MAX); |
950 | name_len++; /* trailing null */ | |
951 | strncpy(pSMB->DirName, dirName, name_len); | |
952 | } | |
953 | ||
954 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 955 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
956 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
957 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
958 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 959 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 960 | if (rc) |
b6b38f70 | 961 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
962 | |
963 | cifs_buf_release(pSMB); | |
964 | if (rc == -EAGAIN) | |
965 | goto RmDirRetry; | |
966 | return rc; | |
967 | } | |
968 | ||
969 | int | |
96daf2b0 | 970 | CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon, |
737b758c | 971 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
972 | { |
973 | int rc = 0; | |
974 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
975 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
976 | int bytes_returned; | |
977 | int name_len; | |
978 | ||
b6b38f70 | 979 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
980 | MkDirRetry: |
981 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
982 | (void **) &pSMBr); | |
983 | if (rc) | |
984 | return rc; | |
985 | ||
986 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
987 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
988 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
989 | name_len++; /* trailing null */ |
990 | name_len *= 2; | |
09d1db5c | 991 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
992 | name_len = strnlen(name, PATH_MAX); |
993 | name_len++; /* trailing null */ | |
994 | strncpy(pSMB->DirName, name, name_len); | |
995 | } | |
996 | ||
997 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 998 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
999 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1000 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1001 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1002 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 1003 | if (rc) |
b6b38f70 | 1004 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 1005 | |
1da177e4 LT |
1006 | cifs_buf_release(pSMB); |
1007 | if (rc == -EAGAIN) | |
1008 | goto MkDirRetry; | |
1009 | return rc; | |
1010 | } | |
1011 | ||
2dd29d31 | 1012 | int |
96daf2b0 | 1013 | CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags, |
ad7a2926 | 1014 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1015 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1016 | const struct nls_table *nls_codepage, int remap) |
1017 | { | |
1018 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1019 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1020 | int name_len; | |
1021 | int rc = 0; | |
1022 | int bytes_returned = 0; | |
2dd29d31 | 1023 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1024 | OPEN_PSX_REQ *pdata; |
1025 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1026 | |
b6b38f70 | 1027 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1028 | PsxCreat: |
1029 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1030 | (void **) &pSMBr); | |
1031 | if (rc) | |
1032 | return rc; | |
1033 | ||
1034 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1035 | name_len = | |
acbbb76a SF |
1036 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1037 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1038 | name_len++; /* trailing null */ |
1039 | name_len *= 2; | |
1040 | } else { /* BB improve the check for buffer overruns BB */ | |
1041 | name_len = strnlen(name, PATH_MAX); | |
1042 | name_len++; /* trailing null */ | |
1043 | strncpy(pSMB->FileName, name, name_len); | |
1044 | } | |
1045 | ||
1046 | params = 6 + name_len; | |
1047 | count = sizeof(OPEN_PSX_REQ); | |
1048 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1049 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1050 | pSMB->MaxSetupCount = 0; | |
1051 | pSMB->Reserved = 0; | |
1052 | pSMB->Flags = 0; | |
1053 | pSMB->Timeout = 0; | |
1054 | pSMB->Reserved2 = 0; | |
1055 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1056 | InformationLevel) - 4; |
2dd29d31 | 1057 | offset = param_offset + params; |
2dd29d31 | 1058 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1059 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1060 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1061 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1062 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1063 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1064 | pSMB->DataOffset = cpu_to_le16(offset); | |
1065 | pSMB->SetupCount = 1; | |
1066 | pSMB->Reserved3 = 0; | |
1067 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1068 | byte_count = 3 /* pad */ + params + count; | |
1069 | ||
1070 | pSMB->DataCount = cpu_to_le16(count); | |
1071 | pSMB->ParameterCount = cpu_to_le16(params); | |
1072 | pSMB->TotalDataCount = pSMB->DataCount; | |
1073 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1074 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1075 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1076 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1077 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1078 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1079 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1080 | if (rc) { | |
b6b38f70 | 1081 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1082 | goto psx_create_err; |
1083 | } | |
1084 | ||
b6b38f70 | 1085 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1086 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1087 | ||
820a803f | 1088 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1089 | rc = -EIO; /* bad smb */ |
1090 | goto psx_create_err; | |
1091 | } | |
1092 | ||
1093 | /* copy return information to pRetData */ | |
50c2f753 | 1094 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1095 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1096 | |
2dd29d31 | 1097 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1098 | if (netfid) |
2dd29d31 SF |
1099 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1100 | /* Let caller know file was created so we can set the mode. */ | |
1101 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1102 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1103 | *pOplock |= CIFS_CREATE_ACTION; |
1104 | /* check to make sure response data is there */ | |
8f2376ad CG |
1105 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1106 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1107 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1108 | } else { |
820a803f | 1109 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1110 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1111 | cERROR(1, "Open response data too small"); |
8f2376ad | 1112 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1113 | goto psx_create_err; |
1114 | } | |
50c2f753 | 1115 | memcpy((char *) pRetData, |
cbac3cba | 1116 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1117 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1118 | } |
2dd29d31 SF |
1119 | |
1120 | psx_create_err: | |
1121 | cifs_buf_release(pSMB); | |
1122 | ||
65bc98b0 SF |
1123 | if (posix_flags & SMB_O_DIRECTORY) |
1124 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1125 | else | |
1126 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1127 | |
1128 | if (rc == -EAGAIN) | |
1129 | goto PsxCreat; | |
1130 | ||
50c2f753 | 1131 | return rc; |
2dd29d31 SF |
1132 | } |
1133 | ||
a9d02ad4 SF |
1134 | static __u16 convert_disposition(int disposition) |
1135 | { | |
1136 | __u16 ofun = 0; | |
1137 | ||
1138 | switch (disposition) { | |
1139 | case FILE_SUPERSEDE: | |
1140 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1141 | break; | |
1142 | case FILE_OPEN: | |
1143 | ofun = SMBOPEN_OAPPEND; | |
1144 | break; | |
1145 | case FILE_CREATE: | |
1146 | ofun = SMBOPEN_OCREATE; | |
1147 | break; | |
1148 | case FILE_OPEN_IF: | |
1149 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1150 | break; | |
1151 | case FILE_OVERWRITE: | |
1152 | ofun = SMBOPEN_OTRUNC; | |
1153 | break; | |
1154 | case FILE_OVERWRITE_IF: | |
1155 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1156 | break; | |
1157 | default: | |
b6b38f70 | 1158 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1159 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1160 | } | |
1161 | return ofun; | |
1162 | } | |
1163 | ||
35fc37d5 JL |
1164 | static int |
1165 | access_flags_to_smbopen_mode(const int access_flags) | |
1166 | { | |
1167 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1168 | ||
1169 | if (masked_flags == GENERIC_READ) | |
1170 | return SMBOPEN_READ; | |
1171 | else if (masked_flags == GENERIC_WRITE) | |
1172 | return SMBOPEN_WRITE; | |
1173 | ||
1174 | /* just go for read/write */ | |
1175 | return SMBOPEN_READWRITE; | |
1176 | } | |
1177 | ||
a9d02ad4 | 1178 | int |
96daf2b0 | 1179 | SMBLegacyOpen(const int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1180 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1181 | const int access_flags, const int create_options, __u16 *netfid, |
1182 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1183 | const struct nls_table *nls_codepage, int remap) |
1184 | { | |
1185 | int rc = -EACCES; | |
1186 | OPENX_REQ *pSMB = NULL; | |
1187 | OPENX_RSP *pSMBr = NULL; | |
1188 | int bytes_returned; | |
1189 | int name_len; | |
1190 | __u16 count; | |
1191 | ||
1192 | OldOpenRetry: | |
1193 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1194 | (void **) &pSMBr); | |
1195 | if (rc) | |
1196 | return rc; | |
1197 | ||
1198 | pSMB->AndXCommand = 0xFF; /* none */ | |
1199 | ||
1200 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1201 | count = 1; /* account for one byte pad to word boundary */ | |
1202 | name_len = | |
acbbb76a SF |
1203 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1204 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1205 | name_len++; /* trailing null */ |
1206 | name_len *= 2; | |
1207 | } else { /* BB improve check for buffer overruns BB */ | |
1208 | count = 0; /* no pad */ | |
1209 | name_len = strnlen(fileName, PATH_MAX); | |
1210 | name_len++; /* trailing null */ | |
1211 | strncpy(pSMB->fileName, fileName, name_len); | |
1212 | } | |
1213 | if (*pOplock & REQ_OPLOCK) | |
1214 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1215 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1216 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1217 | |
a9d02ad4 | 1218 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1219 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1220 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1221 | /* set file as system file if special file such | |
1222 | as fifo and server expecting SFU style and | |
1223 | no Unix extensions */ | |
1224 | ||
790fe579 SF |
1225 | if (create_options & CREATE_OPTION_SPECIAL) |
1226 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1227 | else /* BB FIXME BB */ |
1228 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1229 | |
67750fb9 JL |
1230 | if (create_options & CREATE_OPTION_READONLY) |
1231 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1232 | |
1233 | /* BB FIXME BB */ | |
50c2f753 SF |
1234 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1235 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1236 | /* BB FIXME END BB */ |
3e87d803 SF |
1237 | |
1238 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1239 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1240 | count += name_len; |
be8e3b00 | 1241 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1242 | |
1243 | pSMB->ByteCount = cpu_to_le16(count); | |
1244 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1245 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1246 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1247 | cifs_stats_inc(&tcon->num_opens); |
1248 | if (rc) { | |
b6b38f70 | 1249 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1250 | } else { |
1251 | /* BB verify if wct == 15 */ | |
1252 | ||
582d21e5 | 1253 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1254 | |
1255 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1256 | /* Let caller know file was created so we can set the mode. */ | |
1257 | /* Do we care about the CreateAction in any other cases? */ | |
1258 | /* BB FIXME BB */ | |
790fe579 | 1259 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1260 | *pOplock |= CIFS_CREATE_ACTION; */ |
1261 | /* BB FIXME END */ | |
1262 | ||
790fe579 | 1263 | if (pfile_info) { |
a9d02ad4 SF |
1264 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1265 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1266 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1267 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1268 | pfile_info->Attributes = |
50c2f753 | 1269 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1270 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1271 | pfile_info->AllocationSize = |
1272 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1273 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1274 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1275 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1276 | } |
1277 | } | |
1278 | ||
1279 | cifs_buf_release(pSMB); | |
1280 | if (rc == -EAGAIN) | |
1281 | goto OldOpenRetry; | |
1282 | return rc; | |
1283 | } | |
1284 | ||
1da177e4 | 1285 | int |
96daf2b0 | 1286 | CIFSSMBOpen(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 1287 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1288 | const int access_flags, const int create_options, __u16 *netfid, |
1289 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1290 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1291 | { |
1292 | int rc = -EACCES; | |
1293 | OPEN_REQ *pSMB = NULL; | |
1294 | OPEN_RSP *pSMBr = NULL; | |
1295 | int bytes_returned; | |
1296 | int name_len; | |
1297 | __u16 count; | |
1298 | ||
1299 | openRetry: | |
1300 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1301 | (void **) &pSMBr); | |
1302 | if (rc) | |
1303 | return rc; | |
1304 | ||
1305 | pSMB->AndXCommand = 0xFF; /* none */ | |
1306 | ||
1307 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1308 | count = 1; /* account for one byte pad to word boundary */ | |
1309 | name_len = | |
acbbb76a SF |
1310 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1311 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1312 | name_len++; /* trailing null */ |
1313 | name_len *= 2; | |
1314 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1315 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1316 | count = 0; /* no pad */ |
1317 | name_len = strnlen(fileName, PATH_MAX); | |
1318 | name_len++; /* trailing null */ | |
1319 | pSMB->NameLength = cpu_to_le16(name_len); | |
1320 | strncpy(pSMB->fileName, fileName, name_len); | |
1321 | } | |
1322 | if (*pOplock & REQ_OPLOCK) | |
1323 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1324 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1325 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1326 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1327 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1328 | /* set file as system file if special file such |
1329 | as fifo and server expecting SFU style and | |
1330 | no Unix extensions */ | |
790fe579 | 1331 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1332 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1333 | else | |
1334 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1335 | |
1da177e4 LT |
1336 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1337 | /* but it helps speed up case sensitive checks for other | |
1338 | servers such as Samba */ | |
1339 | if (tcon->ses->capabilities & CAP_UNIX) | |
1340 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1341 | ||
67750fb9 JL |
1342 | if (create_options & CREATE_OPTION_READONLY) |
1343 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1344 | ||
1da177e4 LT |
1345 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1346 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1347 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1348 | /* BB Expirement with various impersonation levels and verify */ |
1349 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1350 | pSMB->SecurityFlags = |
1351 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1352 | ||
1353 | count += name_len; | |
be8e3b00 | 1354 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1355 | |
1356 | pSMB->ByteCount = cpu_to_le16(count); | |
1357 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1358 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1359 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1360 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1361 | if (rc) { |
b6b38f70 | 1362 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1363 | } else { |
09d1db5c | 1364 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1365 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1366 | /* Let caller know file was created so we can set the mode. */ | |
1367 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1368 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1369 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1370 | if (pfile_info) { |
61e74801 SF |
1371 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1372 | 36 /* CreationTime to Attributes */); | |
1373 | /* the file_info buf is endian converted by caller */ | |
1374 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1375 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1376 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1377 | pfile_info->DeletePending = 0; | |
1da177e4 | 1378 | } |
1da177e4 | 1379 | } |
a5a2b489 | 1380 | |
1da177e4 LT |
1381 | cifs_buf_release(pSMB); |
1382 | if (rc == -EAGAIN) | |
1383 | goto openRetry; | |
1384 | return rc; | |
1385 | } | |
1386 | ||
e28bc5b1 JL |
1387 | /* |
1388 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1389 | * current bigbuf. | |
1390 | */ | |
1391 | static int | |
1392 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1393 | { | |
5ffef7bf | 1394 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1395 | int remaining = rfclen + 4 - server->total_read; |
1396 | struct cifs_readdata *rdata = mid->callback_data; | |
1397 | ||
1398 | while (remaining > 0) { | |
1399 | int length; | |
1400 | ||
1401 | length = cifs_read_from_socket(server, server->bigbuf, | |
1402 | min_t(unsigned int, remaining, | |
1887f601 | 1403 | CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1 JL |
1404 | if (length < 0) |
1405 | return length; | |
1406 | server->total_read += length; | |
1407 | remaining -= length; | |
1408 | } | |
1409 | ||
1410 | dequeue_mid(mid, rdata->result); | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | static int | |
1415 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1416 | { | |
1417 | int length, len; | |
8d5ce4d2 | 1418 | unsigned int data_offset, data_len; |
e28bc5b1 | 1419 | struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf PS |
1420 | char *buf = server->smallbuf; |
1421 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 | 1422 | |
7c9421e1 | 1423 | cFYI(1, "%s: mid=%llu offset=%llu bytes=%u", __func__, |
e28bc5b1 JL |
1424 | mid->mid, rdata->offset, rdata->bytes); |
1425 | ||
1426 | /* | |
1427 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1428 | * can if there's not enough data. At this point, we've read down to | |
1429 | * the Mid. | |
1430 | */ | |
eb378711 | 1431 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f601 | 1432 | HEADER_SIZE(server) + 1; |
e28bc5b1 | 1433 | |
1887f601 | 1434 | rdata->iov[0].iov_base = buf + HEADER_SIZE(server) - 1; |
e28bc5b1 JL |
1435 | rdata->iov[0].iov_len = len; |
1436 | ||
1437 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1438 | if (length < 0) | |
1439 | return length; | |
1440 | server->total_read += length; | |
1441 | ||
1442 | /* Was the SMB read successful? */ | |
eb378711 | 1443 | rdata->result = server->ops->map_error(buf, false); |
e28bc5b1 JL |
1444 | if (rdata->result != 0) { |
1445 | cFYI(1, "%s: server returned error %d", __func__, | |
1446 | rdata->result); | |
1447 | return cifs_readv_discard(server, mid); | |
1448 | } | |
1449 | ||
1450 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
eb378711 | 1451 | if (server->total_read < server->vals->read_rsp_size) { |
e28bc5b1 | 1452 | cFYI(1, "%s: server returned short header. got=%u expected=%zu", |
eb378711 PS |
1453 | __func__, server->total_read, |
1454 | server->vals->read_rsp_size); | |
e28bc5b1 JL |
1455 | rdata->result = -EIO; |
1456 | return cifs_readv_discard(server, mid); | |
1457 | } | |
1458 | ||
eb378711 | 1459 | data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1 JL |
1460 | if (data_offset < server->total_read) { |
1461 | /* | |
1462 | * win2k8 sometimes sends an offset of 0 when the read | |
1463 | * is beyond the EOF. Treat it as if the data starts just after | |
1464 | * the header. | |
1465 | */ | |
1466 | cFYI(1, "%s: data offset (%u) inside read response header", | |
1467 | __func__, data_offset); | |
1468 | data_offset = server->total_read; | |
1469 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1470 | /* data_offset is beyond the end of smallbuf */ | |
1471 | cFYI(1, "%s: data offset (%u) beyond end of smallbuf", | |
1472 | __func__, data_offset); | |
1473 | rdata->result = -EIO; | |
1474 | return cifs_readv_discard(server, mid); | |
1475 | } | |
1476 | ||
1477 | cFYI(1, "%s: total_read=%u data_offset=%u", __func__, | |
1478 | server->total_read, data_offset); | |
1479 | ||
1480 | len = data_offset - server->total_read; | |
1481 | if (len > 0) { | |
1482 | /* read any junk before data into the rest of smallbuf */ | |
5ffef7bf | 1483 | rdata->iov[0].iov_base = buf + server->total_read; |
e28bc5b1 JL |
1484 | rdata->iov[0].iov_len = len; |
1485 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1486 | if (length < 0) | |
1487 | return length; | |
1488 | server->total_read += length; | |
1489 | } | |
1490 | ||
1491 | /* set up first iov for signature check */ | |
5ffef7bf | 1492 | rdata->iov[0].iov_base = buf; |
e28bc5b1 JL |
1493 | rdata->iov[0].iov_len = server->total_read; |
1494 | cFYI(1, "0: iov_base=%p iov_len=%zu", | |
1495 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
1496 | ||
1497 | /* how much data is in the response? */ | |
eb378711 | 1498 | data_len = server->ops->read_data_length(buf); |
5ffef7bf | 1499 | if (data_offset + data_len > buflen) { |
e28bc5b1 JL |
1500 | /* data_len is corrupt -- discard frame */ |
1501 | rdata->result = -EIO; | |
1502 | return cifs_readv_discard(server, mid); | |
1503 | } | |
1504 | ||
1505 | /* marshal up the page array */ | |
8d5ce4d2 JL |
1506 | len = rdata->marshal_iov(rdata, data_len); |
1507 | data_len -= len; | |
e28bc5b1 JL |
1508 | |
1509 | /* issue the read if we have any iovecs left to fill */ | |
1510 | if (rdata->nr_iov > 1) { | |
1511 | length = cifs_readv_from_socket(server, &rdata->iov[1], | |
1512 | rdata->nr_iov - 1, len); | |
1513 | if (length < 0) | |
1514 | return length; | |
1515 | server->total_read += length; | |
1516 | } else { | |
1517 | length = 0; | |
1518 | } | |
1519 | ||
1520 | rdata->bytes = length; | |
1521 | ||
5ffef7bf | 1522 | cFYI(1, "total_read=%u buflen=%u remaining=%u", server->total_read, |
8d5ce4d2 | 1523 | buflen, data_len); |
e28bc5b1 JL |
1524 | |
1525 | /* discard anything left over */ | |
5ffef7bf | 1526 | if (server->total_read < buflen) |
e28bc5b1 JL |
1527 | return cifs_readv_discard(server, mid); |
1528 | ||
1529 | dequeue_mid(mid, false); | |
1530 | return length; | |
1531 | } | |
1532 | ||
e28bc5b1 JL |
1533 | static void |
1534 | cifs_readv_callback(struct mid_q_entry *mid) | |
1535 | { | |
1536 | struct cifs_readdata *rdata = mid->callback_data; | |
1537 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1538 | struct TCP_Server_Info *server = tcon->ses->server; | |
1539 | ||
7c9421e1 PS |
1540 | cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__, |
1541 | mid->mid, mid->mid_state, rdata->result, rdata->bytes); | |
e28bc5b1 | 1542 | |
7c9421e1 | 1543 | switch (mid->mid_state) { |
e28bc5b1 JL |
1544 | case MID_RESPONSE_RECEIVED: |
1545 | /* result already set, check signature */ | |
1546 | if (server->sec_mode & | |
1547 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { | |
1548 | if (cifs_verify_signature(rdata->iov, rdata->nr_iov, | |
1549 | server, mid->sequence_number + 1)) | |
1550 | cERROR(1, "Unexpected SMB signature"); | |
1551 | } | |
1552 | /* FIXME: should this be counted toward the initiating task? */ | |
1553 | task_io_account_read(rdata->bytes); | |
1554 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1555 | break; | |
1556 | case MID_REQUEST_SUBMITTED: | |
1557 | case MID_RETRY_NEEDED: | |
1558 | rdata->result = -EAGAIN; | |
1559 | break; | |
1560 | default: | |
1561 | rdata->result = -EIO; | |
1562 | } | |
1563 | ||
da472fc8 | 1564 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1565 | DeleteMidQEntry(mid); |
45275789 | 1566 | add_credits(server, 1); |
e28bc5b1 JL |
1567 | } |
1568 | ||
1569 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1570 | int | |
1571 | cifs_async_readv(struct cifs_readdata *rdata) | |
1572 | { | |
1573 | int rc; | |
1574 | READ_REQ *smb = NULL; | |
1575 | int wct; | |
1576 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1577 | ||
1578 | cFYI(1, "%s: offset=%llu bytes=%u", __func__, | |
1579 | rdata->offset, rdata->bytes); | |
1580 | ||
1581 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1582 | wct = 12; | |
1583 | else { | |
1584 | wct = 10; /* old style read */ | |
1585 | if ((rdata->offset >> 32) > 0) { | |
1586 | /* can not handle this big offset for old */ | |
1587 | return -EIO; | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1592 | if (rc) | |
1593 | return rc; | |
1594 | ||
1595 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1596 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1597 | ||
1598 | smb->AndXCommand = 0xFF; /* none */ | |
1599 | smb->Fid = rdata->cfile->netfid; | |
1600 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); | |
1601 | if (wct == 12) | |
1602 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1603 | smb->Remaining = 0; | |
1604 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1605 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1606 | if (wct == 12) | |
1607 | smb->ByteCount = 0; | |
1608 | else { | |
1609 | /* old style read */ | |
1610 | struct smb_com_readx_req *smbr = | |
1611 | (struct smb_com_readx_req *)smb; | |
1612 | smbr->ByteCount = 0; | |
1613 | } | |
1614 | ||
1615 | /* 4 for RFC1001 length + 1 for BCC */ | |
1616 | rdata->iov[0].iov_base = smb; | |
1617 | rdata->iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
1618 | ||
6993f74a | 1619 | kref_get(&rdata->refcount); |
e28bc5b1 JL |
1620 | rc = cifs_call_async(tcon->ses->server, rdata->iov, 1, |
1621 | cifs_readv_receive, cifs_readv_callback, | |
1622 | rdata, false); | |
1623 | ||
1624 | if (rc == 0) | |
1625 | cifs_stats_inc(&tcon->num_reads); | |
6993f74a JL |
1626 | else |
1627 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1628 | |
1629 | cifs_small_buf_release(smb); | |
1630 | return rc; | |
1631 | } | |
1632 | ||
1da177e4 | 1633 | int |
d4ffff1f | 1634 | CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, |
50c2f753 | 1635 | char **buf, int *pbuf_type) |
1da177e4 LT |
1636 | { |
1637 | int rc = -EACCES; | |
1638 | READ_REQ *pSMB = NULL; | |
1639 | READ_RSP *pSMBr = NULL; | |
1640 | char *pReadData = NULL; | |
bfa0d75a | 1641 | int wct; |
ec637e3f SF |
1642 | int resp_buf_type = 0; |
1643 | struct kvec iov[1]; | |
d4ffff1f PS |
1644 | __u32 pid = io_parms->pid; |
1645 | __u16 netfid = io_parms->netfid; | |
1646 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1647 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1648 | unsigned int count = io_parms->length; |
1da177e4 | 1649 | |
b6b38f70 | 1650 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1651 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1652 | wct = 12; |
4c3130ef | 1653 | else { |
bfa0d75a | 1654 | wct = 10; /* old style read */ |
d4ffff1f | 1655 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1656 | /* can not handle this big offset for old */ |
1657 | return -EIO; | |
1658 | } | |
1659 | } | |
1da177e4 LT |
1660 | |
1661 | *nbytes = 0; | |
ec637e3f | 1662 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1663 | if (rc) |
1664 | return rc; | |
1665 | ||
d4ffff1f PS |
1666 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1667 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1668 | ||
1da177e4 LT |
1669 | /* tcon and ses pointer are checked in smb_init */ |
1670 | if (tcon->ses->server == NULL) | |
1671 | return -ECONNABORTED; | |
1672 | ||
ec637e3f | 1673 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1674 | pSMB->Fid = netfid; |
d4ffff1f | 1675 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1676 | if (wct == 12) |
d4ffff1f | 1677 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1678 | |
1da177e4 LT |
1679 | pSMB->Remaining = 0; |
1680 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1681 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1682 | if (wct == 12) |
bfa0d75a SF |
1683 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1684 | else { | |
1685 | /* old style read */ | |
50c2f753 | 1686 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1687 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1688 | pSMBW->ByteCount = 0; |
bfa0d75a | 1689 | } |
ec637e3f SF |
1690 | |
1691 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1692 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1693 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1694 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1695 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1696 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1697 | if (rc) { |
b6b38f70 | 1698 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1699 | } else { |
1700 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1701 | data_length = data_length << 16; | |
1702 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1703 | *nbytes = data_length; | |
1704 | ||
1705 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1706 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1707 | || (data_length > count)) { |
b6b38f70 JP |
1708 | cFYI(1, "bad length %d for count %d", |
1709 | data_length, count); | |
1da177e4 LT |
1710 | rc = -EIO; |
1711 | *nbytes = 0; | |
1712 | } else { | |
ec637e3f | 1713 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1714 | le16_to_cpu(pSMBr->DataOffset); |
1715 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1716 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1717 | rc = -EFAULT; |
26f57364 | 1718 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1719 | if (*buf) |
50c2f753 | 1720 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1721 | } |
1722 | } | |
1da177e4 | 1723 | |
4b8f930f | 1724 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1725 | if (*buf) { |
1726 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1727 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1728 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1729 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1730 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1731 | /* return buffer to caller to free */ |
1732 | *buf = iov[0].iov_base; | |
790fe579 | 1733 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1734 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1735 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1736 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1737 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1738 | |
1739 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1740 | since file handle passed in no longer valid */ |
1741 | return rc; | |
1742 | } | |
1743 | ||
ec637e3f | 1744 | |
1da177e4 | 1745 | int |
fa2989f4 PS |
1746 | CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, |
1747 | unsigned int *nbytes, const char *buf, | |
50c2f753 | 1748 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1749 | { |
1750 | int rc = -EACCES; | |
1751 | WRITE_REQ *pSMB = NULL; | |
1752 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1753 | int bytes_returned, wct; |
1da177e4 LT |
1754 | __u32 bytes_sent; |
1755 | __u16 byte_count; | |
fa2989f4 PS |
1756 | __u32 pid = io_parms->pid; |
1757 | __u16 netfid = io_parms->netfid; | |
1758 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1759 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1760 | unsigned int count = io_parms->length; |
1da177e4 | 1761 | |
a24e2d7d SF |
1762 | *nbytes = 0; |
1763 | ||
b6b38f70 | 1764 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1765 | if (tcon->ses == NULL) |
1c955187 SF |
1766 | return -ECONNABORTED; |
1767 | ||
790fe579 | 1768 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1769 | wct = 14; |
4c3130ef | 1770 | else { |
1c955187 | 1771 | wct = 12; |
4c3130ef SF |
1772 | if ((offset >> 32) > 0) { |
1773 | /* can not handle big offset for old srv */ | |
1774 | return -EIO; | |
1775 | } | |
1776 | } | |
1c955187 SF |
1777 | |
1778 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1779 | (void **) &pSMBr); |
1780 | if (rc) | |
1781 | return rc; | |
fa2989f4 PS |
1782 | |
1783 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1784 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1785 | ||
1da177e4 LT |
1786 | /* tcon and ses pointer are checked in smb_init */ |
1787 | if (tcon->ses->server == NULL) | |
1788 | return -ECONNABORTED; | |
1789 | ||
1790 | pSMB->AndXCommand = 0xFF; /* none */ | |
1791 | pSMB->Fid = netfid; | |
1792 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1793 | if (wct == 14) |
1c955187 | 1794 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1795 | |
1da177e4 LT |
1796 | pSMB->Reserved = 0xFFFFFFFF; |
1797 | pSMB->WriteMode = 0; | |
1798 | pSMB->Remaining = 0; | |
1799 | ||
50c2f753 | 1800 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1801 | can send more if LARGE_WRITE_X capability returned by the server and if |
1802 | our buffer is big enough or if we convert to iovecs on socket writes | |
1803 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1804 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1805 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1806 | } else { | |
1807 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1808 | & ~0xFF; | |
1809 | } | |
1810 | ||
1811 | if (bytes_sent > count) | |
1812 | bytes_sent = count; | |
1813 | pSMB->DataOffset = | |
50c2f753 | 1814 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1815 | if (buf) |
61e74801 | 1816 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1817 | else if (ubuf) { |
1818 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1819 | cifs_buf_release(pSMB); |
1820 | return -EFAULT; | |
1821 | } | |
e30dcf3a | 1822 | } else if (count != 0) { |
1da177e4 LT |
1823 | /* No buffer */ |
1824 | cifs_buf_release(pSMB); | |
1825 | return -EINVAL; | |
e30dcf3a | 1826 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1827 | if (wct == 14) |
e30dcf3a | 1828 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1829 | else /* wct == 12 */ |
e30dcf3a | 1830 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1831 | |
1da177e4 LT |
1832 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1833 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1834 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1835 | |
790fe579 | 1836 | if (wct == 14) |
1c955187 | 1837 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1838 | else { /* old style write has byte count 4 bytes earlier |
1839 | so 4 bytes pad */ | |
1840 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1841 | (struct smb_com_writex_req *)pSMB; |
1842 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1843 | } | |
1da177e4 LT |
1844 | |
1845 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1846 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1847 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1848 | if (rc) { |
f19159dc | 1849 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1850 | } else { |
1851 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1852 | *nbytes = (*nbytes) << 16; | |
1853 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1854 | |
1855 | /* | |
1856 | * Mask off high 16 bits when bytes written as returned by the | |
1857 | * server is greater than bytes requested by the client. Some | |
1858 | * OS/2 servers are known to set incorrect CountHigh values. | |
1859 | */ | |
1860 | if (*nbytes > count) | |
1861 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1862 | } |
1863 | ||
1864 | cifs_buf_release(pSMB); | |
1865 | ||
50c2f753 | 1866 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1867 | since file handle passed in no longer valid */ |
1868 | ||
1869 | return rc; | |
1870 | } | |
1871 | ||
c28c89fc JL |
1872 | void |
1873 | cifs_writedata_release(struct kref *refcount) | |
1874 | { | |
1875 | struct cifs_writedata *wdata = container_of(refcount, | |
1876 | struct cifs_writedata, refcount); | |
1877 | ||
1878 | if (wdata->cfile) | |
1879 | cifsFileInfo_put(wdata->cfile); | |
1880 | ||
1881 | kfree(wdata); | |
1882 | } | |
1883 | ||
1884 | /* | |
1885 | * Write failed with a retryable error. Resend the write request. It's also | |
1886 | * possible that the page was redirtied so re-clean the page. | |
1887 | */ | |
1888 | static void | |
1889 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
1890 | { | |
1891 | int i, rc; | |
1892 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1893 | ||
1894 | for (i = 0; i < wdata->nr_pages; i++) { | |
1895 | lock_page(wdata->pages[i]); | |
1896 | clear_page_dirty_for_io(wdata->pages[i]); | |
1897 | } | |
1898 | ||
1899 | do { | |
1900 | rc = cifs_async_writev(wdata); | |
1901 | } while (rc == -EAGAIN); | |
1902 | ||
1903 | for (i = 0; i < wdata->nr_pages; i++) { | |
1904 | if (rc != 0) | |
1905 | SetPageError(wdata->pages[i]); | |
1906 | unlock_page(wdata->pages[i]); | |
1907 | } | |
1908 | ||
1909 | mapping_set_error(inode->i_mapping, rc); | |
1910 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1911 | } | |
1912 | ||
c2e87640 | 1913 | void |
c28c89fc JL |
1914 | cifs_writev_complete(struct work_struct *work) |
1915 | { | |
1916 | struct cifs_writedata *wdata = container_of(work, | |
1917 | struct cifs_writedata, work); | |
1918 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
1919 | int i = 0; | |
1920 | ||
1921 | if (wdata->result == 0) { | |
597b027f | 1922 | spin_lock(&inode->i_lock); |
c28c89fc | 1923 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 1924 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
1925 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
1926 | wdata->bytes); | |
1927 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
1928 | return cifs_writev_requeue(wdata); | |
1929 | ||
1930 | for (i = 0; i < wdata->nr_pages; i++) { | |
1931 | struct page *page = wdata->pages[i]; | |
1932 | if (wdata->result == -EAGAIN) | |
1933 | __set_page_dirty_nobuffers(page); | |
1934 | else if (wdata->result < 0) | |
1935 | SetPageError(page); | |
1936 | end_page_writeback(page); | |
1937 | page_cache_release(page); | |
1938 | } | |
1939 | if (wdata->result != -EAGAIN) | |
1940 | mapping_set_error(inode->i_mapping, wdata->result); | |
1941 | kref_put(&wdata->refcount, cifs_writedata_release); | |
1942 | } | |
1943 | ||
1944 | struct cifs_writedata * | |
c2e87640 | 1945 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
1946 | { |
1947 | struct cifs_writedata *wdata; | |
1948 | ||
1949 | /* this would overflow */ | |
1950 | if (nr_pages == 0) { | |
1951 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
1952 | return NULL; | |
1953 | } | |
1954 | ||
1955 | /* writedata + number of page pointers */ | |
1956 | wdata = kzalloc(sizeof(*wdata) + | |
1957 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
1958 | if (wdata != NULL) { | |
c28c89fc | 1959 | kref_init(&wdata->refcount); |
da82f7e7 JL |
1960 | INIT_LIST_HEAD(&wdata->list); |
1961 | init_completion(&wdata->done); | |
1962 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
1963 | } |
1964 | return wdata; | |
1965 | } | |
1966 | ||
1967 | /* | |
7c9421e1 | 1968 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1969 | * workqueue completion task. |
1970 | */ | |
1971 | static void | |
1972 | cifs_writev_callback(struct mid_q_entry *mid) | |
1973 | { | |
1974 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1975 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1976 | unsigned int written; |
1977 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
1978 | ||
7c9421e1 | 1979 | switch (mid->mid_state) { |
c28c89fc JL |
1980 | case MID_RESPONSE_RECEIVED: |
1981 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1982 | if (wdata->result != 0) | |
1983 | break; | |
1984 | ||
1985 | written = le16_to_cpu(smb->CountHigh); | |
1986 | written <<= 16; | |
1987 | written += le16_to_cpu(smb->Count); | |
1988 | /* | |
1989 | * Mask off high 16 bits when bytes written as returned | |
1990 | * by the server is greater than bytes requested by the | |
1991 | * client. OS/2 servers are known to set incorrect | |
1992 | * CountHigh values. | |
1993 | */ | |
1994 | if (written > wdata->bytes) | |
1995 | written &= 0xFFFF; | |
1996 | ||
1997 | if (written < wdata->bytes) | |
1998 | wdata->result = -ENOSPC; | |
1999 | else | |
2000 | wdata->bytes = written; | |
2001 | break; | |
2002 | case MID_REQUEST_SUBMITTED: | |
2003 | case MID_RETRY_NEEDED: | |
2004 | wdata->result = -EAGAIN; | |
2005 | break; | |
2006 | default: | |
2007 | wdata->result = -EIO; | |
2008 | break; | |
2009 | } | |
2010 | ||
da472fc8 | 2011 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2012 | DeleteMidQEntry(mid); |
45275789 | 2013 | add_credits(tcon->ses->server, 1); |
c28c89fc JL |
2014 | } |
2015 | ||
2016 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2017 | int | |
2018 | cifs_async_writev(struct cifs_writedata *wdata) | |
2019 | { | |
2020 | int i, rc = -EACCES; | |
2021 | WRITE_REQ *smb = NULL; | |
2022 | int wct; | |
96daf2b0 | 2023 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2024 | struct kvec *iov = NULL; |
2025 | ||
2026 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2027 | wct = 14; | |
2028 | } else { | |
2029 | wct = 12; | |
2030 | if (wdata->offset >> 32 > 0) { | |
2031 | /* can not handle big offset for old srv */ | |
2032 | return -EIO; | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2037 | if (rc) | |
2038 | goto async_writev_out; | |
2039 | ||
2040 | /* 1 iov per page + 1 for header */ | |
2041 | iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS); | |
2042 | if (iov == NULL) { | |
2043 | rc = -ENOMEM; | |
2044 | goto async_writev_out; | |
2045 | } | |
2046 | ||
fe5f5d2e JL |
2047 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2048 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2049 | |
c28c89fc JL |
2050 | smb->AndXCommand = 0xFF; /* none */ |
2051 | smb->Fid = wdata->cfile->netfid; | |
2052 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); | |
2053 | if (wct == 14) | |
2054 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2055 | smb->Reserved = 0xFFFFFFFF; | |
2056 | smb->WriteMode = 0; | |
2057 | smb->Remaining = 0; | |
2058 | ||
2059 | smb->DataOffset = | |
2060 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2061 | ||
2062 | /* 4 for RFC1001 length + 1 for BCC */ | |
2063 | iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; | |
2064 | iov[0].iov_base = smb; | |
2065 | ||
e9492871 JL |
2066 | /* |
2067 | * This function should marshal up the page array into the kvec | |
2068 | * array, reserving [0] for the header. It should kmap the pages | |
2069 | * and set the iov_len properly for each one. It may also set | |
2070 | * wdata->bytes too. | |
2071 | */ | |
2072 | wdata->marshal_iov(iov, wdata); | |
c28c89fc JL |
2073 | |
2074 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
2075 | ||
2076 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2077 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2078 | ||
2079 | if (wct == 14) { | |
2080 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2081 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2082 | } else { | |
2083 | /* wct == 12 */ | |
2084 | struct smb_com_writex_req *smbw = | |
2085 | (struct smb_com_writex_req *)smb; | |
2086 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2087 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
2088 | iov[0].iov_len += 4; /* pad bigger by four bytes */ | |
2089 | } | |
2090 | ||
2091 | kref_get(&wdata->refcount); | |
2092 | rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1, | |
44d22d84 | 2093 | NULL, cifs_writev_callback, wdata, false); |
c28c89fc JL |
2094 | |
2095 | if (rc == 0) | |
2096 | cifs_stats_inc(&tcon->num_writes); | |
2097 | else | |
2098 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2099 | ||
2100 | /* send is done, unmap pages */ | |
2101 | for (i = 0; i < wdata->nr_pages; i++) | |
2102 | kunmap(wdata->pages[i]); | |
2103 | ||
2104 | async_writev_out: | |
2105 | cifs_small_buf_release(smb); | |
2106 | kfree(iov); | |
2107 | return rc; | |
2108 | } | |
2109 | ||
d6e04ae6 | 2110 | int |
fa2989f4 PS |
2111 | CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, |
2112 | unsigned int *nbytes, struct kvec *iov, int n_vec, | |
2113 | const int long_op) | |
1da177e4 LT |
2114 | { |
2115 | int rc = -EACCES; | |
2116 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2117 | int wct; |
d6e04ae6 | 2118 | int smb_hdr_len; |
ec637e3f | 2119 | int resp_buf_type = 0; |
fa2989f4 PS |
2120 | __u32 pid = io_parms->pid; |
2121 | __u16 netfid = io_parms->netfid; | |
2122 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2123 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2124 | unsigned int count = io_parms->length; |
1da177e4 | 2125 | |
fbec9ab9 JL |
2126 | *nbytes = 0; |
2127 | ||
b6b38f70 | 2128 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 2129 | |
4c3130ef | 2130 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2131 | wct = 14; |
4c3130ef | 2132 | } else { |
8cc64c6e | 2133 | wct = 12; |
4c3130ef SF |
2134 | if ((offset >> 32) > 0) { |
2135 | /* can not handle big offset for old srv */ | |
2136 | return -EIO; | |
2137 | } | |
2138 | } | |
8cc64c6e | 2139 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2140 | if (rc) |
2141 | return rc; | |
fa2989f4 PS |
2142 | |
2143 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2144 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2145 | ||
1da177e4 LT |
2146 | /* tcon and ses pointer are checked in smb_init */ |
2147 | if (tcon->ses->server == NULL) | |
2148 | return -ECONNABORTED; | |
2149 | ||
d6e04ae6 | 2150 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2151 | pSMB->Fid = netfid; |
2152 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2153 | if (wct == 14) |
8cc64c6e | 2154 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2155 | pSMB->Reserved = 0xFFFFFFFF; |
2156 | pSMB->WriteMode = 0; | |
2157 | pSMB->Remaining = 0; | |
d6e04ae6 | 2158 | |
1da177e4 | 2159 | pSMB->DataOffset = |
50c2f753 | 2160 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2161 | |
3e84469d SF |
2162 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2163 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2164 | /* header + 1 byte pad */ |
2165 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2166 | if (wct == 14) |
be8e3b00 | 2167 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2168 | else /* wct == 12 */ |
be8e3b00 | 2169 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2170 | if (wct == 14) |
8cc64c6e SF |
2171 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2172 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2173 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2174 | (struct smb_com_writex_req *)pSMB; |
2175 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2176 | } | |
3e84469d | 2177 | iov[0].iov_base = pSMB; |
790fe579 | 2178 | if (wct == 14) |
ec637e3f SF |
2179 | iov[0].iov_len = smb_hdr_len + 4; |
2180 | else /* wct == 12 pad bigger by four bytes */ | |
2181 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2182 | |
1da177e4 | 2183 | |
ec637e3f | 2184 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 2185 | long_op); |
a4544347 | 2186 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 2187 | if (rc) { |
b6b38f70 | 2188 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 2189 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2190 | /* presumably this can not happen, but best to be safe */ |
2191 | rc = -EIO; | |
d6e04ae6 | 2192 | } else { |
ad7a2926 | 2193 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2194 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2195 | *nbytes = (*nbytes) << 16; | |
2196 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2197 | |
2198 | /* | |
2199 | * Mask off high 16 bits when bytes written as returned by the | |
2200 | * server is greater than bytes requested by the client. OS/2 | |
2201 | * servers are known to set incorrect CountHigh values. | |
2202 | */ | |
2203 | if (*nbytes > count) | |
2204 | *nbytes &= 0xFFFF; | |
50c2f753 | 2205 | } |
1da177e4 | 2206 | |
4b8f930f | 2207 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2208 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2209 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2210 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2211 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2212 | |
50c2f753 | 2213 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2214 | since file handle passed in no longer valid */ |
2215 | ||
2216 | return rc; | |
2217 | } | |
d6e04ae6 | 2218 | |
9ee305b7 PS |
2219 | int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid, |
2220 | const __u8 lock_type, const __u32 num_unlock, | |
2221 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) | |
2222 | { | |
2223 | int rc = 0; | |
2224 | LOCK_REQ *pSMB = NULL; | |
2225 | struct kvec iov[2]; | |
2226 | int resp_buf_type; | |
2227 | __u16 count; | |
2228 | ||
2229 | cFYI(1, "cifs_lockv num lock %d num unlock %d", num_lock, num_unlock); | |
2230 | ||
2231 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2232 | if (rc) | |
2233 | return rc; | |
2234 | ||
2235 | pSMB->Timeout = 0; | |
2236 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2237 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2238 | pSMB->LockType = lock_type; | |
2239 | pSMB->AndXCommand = 0xFF; /* none */ | |
2240 | pSMB->Fid = netfid; /* netfid stays le */ | |
2241 | ||
2242 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2243 | inc_rfc1001_len(pSMB, count); | |
2244 | pSMB->ByteCount = cpu_to_le16(count); | |
2245 | ||
2246 | iov[0].iov_base = (char *)pSMB; | |
2247 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2248 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2249 | iov[1].iov_base = (char *)buf; | |
2250 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2251 | ||
2252 | cifs_stats_inc(&tcon->num_locks); | |
2253 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); | |
2254 | if (rc) | |
2255 | cFYI(1, "Send error in cifs_lockv = %d", rc); | |
2256 | ||
2257 | return rc; | |
2258 | } | |
d6e04ae6 | 2259 | |
1da177e4 | 2260 | int |
96daf2b0 | 2261 | CIFSSMBLock(const int xid, struct cifs_tcon *tcon, |
03776f45 | 2262 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2263 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2264 | const __u32 numLock, const __u8 lockType, |
2265 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2266 | { |
2267 | int rc = 0; | |
2268 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2269 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
2270 | int bytes_returned; |
2271 | int timeout = 0; | |
2272 | __u16 count; | |
2273 | ||
b6b38f70 | 2274 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
2275 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2276 | ||
1da177e4 LT |
2277 | if (rc) |
2278 | return rc; | |
2279 | ||
790fe579 | 2280 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 2281 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 2282 | pSMB->Timeout = 0; |
4b18f2a9 | 2283 | } else if (waitFlag) { |
133672ef | 2284 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2285 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2286 | } else { | |
2287 | pSMB->Timeout = 0; | |
2288 | } | |
2289 | ||
2290 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2291 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2292 | pSMB->LockType = lockType; | |
12fed00d | 2293 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2294 | pSMB->AndXCommand = 0xFF; /* none */ |
2295 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2296 | ||
790fe579 | 2297 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2298 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2299 | /* BB where to store pid high? */ |
2300 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2301 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2302 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2303 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2304 | count = sizeof(LOCKING_ANDX_RANGE); | |
2305 | } else { | |
2306 | /* oplock break */ | |
2307 | count = 0; | |
2308 | } | |
be8e3b00 | 2309 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2310 | pSMB->ByteCount = cpu_to_le16(count); |
2311 | ||
7ee1af76 JA |
2312 | if (waitFlag) { |
2313 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2314 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2315 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2316 | } else { |
792af7b0 | 2317 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, timeout); |
133672ef | 2318 | /* SMB buffer freed by function above */ |
7ee1af76 | 2319 | } |
a4544347 | 2320 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 2321 | if (rc) |
b6b38f70 | 2322 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2323 | |
50c2f753 | 2324 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2325 | since file handle passed in no longer valid */ |
2326 | return rc; | |
2327 | } | |
2328 | ||
08547b03 | 2329 | int |
96daf2b0 | 2330 | CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon, |
4f6bcec9 PS |
2331 | const __u16 smb_file_id, const __u32 netpid, const int get_flag, |
2332 | const __u64 len, struct file_lock *pLockData, | |
2333 | const __u16 lock_type, const bool waitFlag) | |
08547b03 SF |
2334 | { |
2335 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2336 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2337 | struct cifs_posix_lock *parm_data; |
2338 | int rc = 0; | |
3a5ff61c | 2339 | int timeout = 0; |
08547b03 | 2340 | int bytes_returned = 0; |
133672ef | 2341 | int resp_buf_type = 0; |
08547b03 | 2342 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2343 | struct kvec iov[1]; |
08547b03 | 2344 | |
b6b38f70 | 2345 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2346 | |
790fe579 | 2347 | if (pLockData == NULL) |
ed5f0370 | 2348 | return -EINVAL; |
fc94cdb9 | 2349 | |
08547b03 SF |
2350 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2351 | ||
2352 | if (rc) | |
2353 | return rc; | |
2354 | ||
2355 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2356 | ||
50c2f753 | 2357 | params = 6; |
08547b03 SF |
2358 | pSMB->MaxSetupCount = 0; |
2359 | pSMB->Reserved = 0; | |
2360 | pSMB->Flags = 0; | |
08547b03 SF |
2361 | pSMB->Reserved2 = 0; |
2362 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2363 | offset = param_offset + params; | |
2364 | ||
08547b03 SF |
2365 | count = sizeof(struct cifs_posix_lock); |
2366 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2367 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2368 | pSMB->SetupCount = 1; |
2369 | pSMB->Reserved3 = 0; | |
790fe579 | 2370 | if (get_flag) |
08547b03 SF |
2371 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2372 | else | |
2373 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2374 | byte_count = 3 /* pad */ + params + count; | |
2375 | pSMB->DataCount = cpu_to_le16(count); | |
2376 | pSMB->ParameterCount = cpu_to_le16(params); | |
2377 | pSMB->TotalDataCount = pSMB->DataCount; | |
2378 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2379 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2380 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2381 | (((char *) &pSMB->hdr.Protocol) + offset); |
2382 | ||
2383 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2384 | if (waitFlag) { |
133672ef | 2385 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2386 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2387 | pSMB->Timeout = cpu_to_le32(-1); |
2388 | } else | |
2389 | pSMB->Timeout = 0; | |
2390 | ||
4f6bcec9 | 2391 | parm_data->pid = cpu_to_le32(netpid); |
fc94cdb9 | 2392 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 2393 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2394 | |
2395 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2396 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2397 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2398 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2399 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2400 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2401 | if (waitFlag) { |
2402 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2403 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2404 | } else { | |
133672ef | 2405 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2406 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2407 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2408 | &resp_buf_type, timeout); | |
2409 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2410 | not try to free it twice below on exit */ | |
2411 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2412 | } |
2413 | ||
08547b03 | 2414 | if (rc) { |
b6b38f70 | 2415 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
2416 | } else if (get_flag) { |
2417 | /* lock structure can be returned on get */ | |
2418 | __u16 data_offset; | |
2419 | __u16 data_count; | |
2420 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2421 | ||
820a803f | 2422 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2423 | rc = -EIO; /* bad smb */ |
2424 | goto plk_err_exit; | |
2425 | } | |
fc94cdb9 SF |
2426 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2427 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2428 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2429 | rc = -EIO; |
2430 | goto plk_err_exit; | |
2431 | } | |
2432 | parm_data = (struct cifs_posix_lock *) | |
2433 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2434 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2435 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2436 | else { |
2437 | if (parm_data->lock_type == | |
2438 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2439 | pLockData->fl_type = F_RDLCK; | |
2440 | else if (parm_data->lock_type == | |
2441 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2442 | pLockData->fl_type = F_WRLCK; | |
2443 | ||
5443d130 SF |
2444 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2445 | pLockData->fl_end = pLockData->fl_start + | |
2446 | le64_to_cpu(parm_data->length) - 1; | |
2447 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2448 | } |
08547b03 | 2449 | } |
50c2f753 | 2450 | |
fc94cdb9 | 2451 | plk_err_exit: |
08547b03 SF |
2452 | if (pSMB) |
2453 | cifs_small_buf_release(pSMB); | |
2454 | ||
133672ef SF |
2455 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2456 | cifs_small_buf_release(iov[0].iov_base); | |
2457 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2458 | cifs_buf_release(iov[0].iov_base); | |
2459 | ||
08547b03 SF |
2460 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2461 | since file handle passed in no longer valid */ | |
2462 | ||
2463 | return rc; | |
2464 | } | |
2465 | ||
2466 | ||
1da177e4 | 2467 | int |
96daf2b0 | 2468 | CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2469 | { |
2470 | int rc = 0; | |
2471 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2472 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2473 | |
2474 | /* do not retry on dead session on close */ | |
2475 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2476 | if (rc == -EAGAIN) |
1da177e4 LT |
2477 | return 0; |
2478 | if (rc) | |
2479 | return rc; | |
2480 | ||
1da177e4 | 2481 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2482 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2483 | pSMB->ByteCount = 0; |
792af7b0 | 2484 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
a4544347 | 2485 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 2486 | if (rc) { |
790fe579 | 2487 | if (rc != -EINTR) { |
1da177e4 | 2488 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2489 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2490 | } |
2491 | } | |
2492 | ||
1da177e4 | 2493 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2494 | if (rc == -EAGAIN) |
1da177e4 LT |
2495 | rc = 0; |
2496 | ||
2497 | return rc; | |
2498 | } | |
2499 | ||
b298f223 | 2500 | int |
96daf2b0 | 2501 | CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2502 | { |
2503 | int rc = 0; | |
2504 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2505 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2506 | |
2507 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2508 | if (rc) | |
2509 | return rc; | |
2510 | ||
2511 | pSMB->FileID = (__u16) smb_file_id; | |
2512 | pSMB->ByteCount = 0; | |
792af7b0 | 2513 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
b298f223 SF |
2514 | cifs_stats_inc(&tcon->num_flushes); |
2515 | if (rc) | |
b6b38f70 | 2516 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2517 | |
2518 | return rc; | |
2519 | } | |
2520 | ||
1da177e4 | 2521 | int |
96daf2b0 | 2522 | CIFSSMBRename(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2523 | const char *fromName, const char *toName, |
737b758c | 2524 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2525 | { |
2526 | int rc = 0; | |
2527 | RENAME_REQ *pSMB = NULL; | |
2528 | RENAME_RSP *pSMBr = NULL; | |
2529 | int bytes_returned; | |
2530 | int name_len, name_len2; | |
2531 | __u16 count; | |
2532 | ||
b6b38f70 | 2533 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2534 | renameRetry: |
2535 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2536 | (void **) &pSMBr); | |
2537 | if (rc) | |
2538 | return rc; | |
2539 | ||
2540 | pSMB->BufferFormat = 0x04; | |
2541 | pSMB->SearchAttributes = | |
2542 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2543 | ATTR_DIRECTORY); | |
2544 | ||
2545 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2546 | name_len = | |
acbbb76a SF |
2547 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
2548 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2549 | name_len++; /* trailing null */ |
2550 | name_len *= 2; | |
2551 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2552 | /* protocol requires ASCII signature byte on Unicode string */ | |
2553 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2554 | name_len2 = | |
acbbb76a SF |
2555 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2556 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2557 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2558 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2559 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2560 | name_len = strnlen(fromName, PATH_MAX); |
2561 | name_len++; /* trailing null */ | |
2562 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2563 | name_len2 = strnlen(toName, PATH_MAX); | |
2564 | name_len2++; /* trailing null */ | |
2565 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2566 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2567 | name_len2++; /* trailing null */ | |
2568 | name_len2++; /* signature byte */ | |
2569 | } | |
2570 | ||
2571 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2572 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2573 | pSMB->ByteCount = cpu_to_le16(count); |
2574 | ||
2575 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2576 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2577 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2578 | if (rc) |
b6b38f70 | 2579 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2580 | |
1da177e4 LT |
2581 | cifs_buf_release(pSMB); |
2582 | ||
2583 | if (rc == -EAGAIN) | |
2584 | goto renameRetry; | |
2585 | ||
2586 | return rc; | |
2587 | } | |
2588 | ||
96daf2b0 | 2589 | int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon, |
391e5755 | 2590 | int netfid, const char *target_name, |
50c2f753 | 2591 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2592 | { |
2593 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2594 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2595 | struct set_file_rename *rename_info; |
1da177e4 LT |
2596 | char *data_offset; |
2597 | char dummy_string[30]; | |
2598 | int rc = 0; | |
2599 | int bytes_returned = 0; | |
2600 | int len_of_str; | |
2601 | __u16 params, param_offset, offset, count, byte_count; | |
2602 | ||
b6b38f70 | 2603 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2604 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2605 | (void **) &pSMBr); | |
2606 | if (rc) | |
2607 | return rc; | |
2608 | ||
2609 | params = 6; | |
2610 | pSMB->MaxSetupCount = 0; | |
2611 | pSMB->Reserved = 0; | |
2612 | pSMB->Flags = 0; | |
2613 | pSMB->Timeout = 0; | |
2614 | pSMB->Reserved2 = 0; | |
2615 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2616 | offset = param_offset + params; | |
2617 | ||
2618 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2619 | rename_info = (struct set_file_rename *) data_offset; | |
2620 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2621 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2622 | pSMB->SetupCount = 1; |
2623 | pSMB->Reserved3 = 0; | |
2624 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2625 | byte_count = 3 /* pad */ + params; | |
2626 | pSMB->ParameterCount = cpu_to_le16(params); | |
2627 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2628 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2629 | pSMB->DataOffset = cpu_to_le16(offset); | |
2630 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2631 | rename_info->overwrite = cpu_to_le32(1); | |
2632 | rename_info->root_fid = 0; | |
2633 | /* unicode only call */ | |
790fe579 | 2634 | if (target_name == NULL) { |
50c2f753 | 2635 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2636 | len_of_str = |
2637 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2638 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2639 | } else { |
acbbb76a SF |
2640 | len_of_str = |
2641 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2642 | target_name, PATH_MAX, nls_codepage, |
2643 | remap); | |
1da177e4 LT |
2644 | } |
2645 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2646 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2647 | byte_count += count; |
2648 | pSMB->DataCount = cpu_to_le16(count); | |
2649 | pSMB->TotalDataCount = pSMB->DataCount; | |
2650 | pSMB->Fid = netfid; | |
2651 | pSMB->InformationLevel = | |
2652 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2653 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2654 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2655 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2656 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2657 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2658 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2659 | if (rc) |
b6b38f70 | 2660 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2661 | |
1da177e4 LT |
2662 | cifs_buf_release(pSMB); |
2663 | ||
2664 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2665 | since file handle passed in no longer valid */ | |
2666 | ||
2667 | return rc; | |
2668 | } | |
2669 | ||
2670 | int | |
96daf2b0 | 2671 | CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName, |
50c2f753 SF |
2672 | const __u16 target_tid, const char *toName, const int flags, |
2673 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2674 | { |
2675 | int rc = 0; | |
2676 | COPY_REQ *pSMB = NULL; | |
2677 | COPY_RSP *pSMBr = NULL; | |
2678 | int bytes_returned; | |
2679 | int name_len, name_len2; | |
2680 | __u16 count; | |
2681 | ||
b6b38f70 | 2682 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2683 | copyRetry: |
2684 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2685 | (void **) &pSMBr); | |
2686 | if (rc) | |
2687 | return rc; | |
2688 | ||
2689 | pSMB->BufferFormat = 0x04; | |
2690 | pSMB->Tid2 = target_tid; | |
2691 | ||
2692 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2693 | ||
2694 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2695 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2696 | fromName, PATH_MAX, nls_codepage, | |
2697 | remap); | |
1da177e4 LT |
2698 | name_len++; /* trailing null */ |
2699 | name_len *= 2; | |
2700 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2701 | /* protocol requires ASCII signature byte on Unicode string */ | |
2702 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2703 | name_len2 = |
acbbb76a SF |
2704 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2705 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2706 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2707 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2708 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2709 | name_len = strnlen(fromName, PATH_MAX); |
2710 | name_len++; /* trailing null */ | |
2711 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2712 | name_len2 = strnlen(toName, PATH_MAX); | |
2713 | name_len2++; /* trailing null */ | |
2714 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2715 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2716 | name_len2++; /* trailing null */ | |
2717 | name_len2++; /* signature byte */ | |
2718 | } | |
2719 | ||
2720 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2721 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2722 | pSMB->ByteCount = cpu_to_le16(count); |
2723 | ||
2724 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2725 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2726 | if (rc) { | |
b6b38f70 JP |
2727 | cFYI(1, "Send error in copy = %d with %d files copied", |
2728 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2729 | } |
0d817bc0 | 2730 | cifs_buf_release(pSMB); |
1da177e4 LT |
2731 | |
2732 | if (rc == -EAGAIN) | |
2733 | goto copyRetry; | |
2734 | ||
2735 | return rc; | |
2736 | } | |
2737 | ||
2738 | int | |
96daf2b0 | 2739 | CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2740 | const char *fromName, const char *toName, |
2741 | const struct nls_table *nls_codepage) | |
2742 | { | |
2743 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2744 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2745 | char *data_offset; | |
2746 | int name_len; | |
2747 | int name_len_target; | |
2748 | int rc = 0; | |
2749 | int bytes_returned = 0; | |
2750 | __u16 params, param_offset, offset, byte_count; | |
2751 | ||
b6b38f70 | 2752 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2753 | createSymLinkRetry: |
2754 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2755 | (void **) &pSMBr); | |
2756 | if (rc) | |
2757 | return rc; | |
2758 | ||
2759 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2760 | name_len = | |
acbbb76a SF |
2761 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2762 | /* find define for this maxpathcomponent */ | |
2763 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2764 | name_len++; /* trailing null */ |
2765 | name_len *= 2; | |
2766 | ||
50c2f753 | 2767 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2768 | name_len = strnlen(fromName, PATH_MAX); |
2769 | name_len++; /* trailing null */ | |
2770 | strncpy(pSMB->FileName, fromName, name_len); | |
2771 | } | |
2772 | params = 6 + name_len; | |
2773 | pSMB->MaxSetupCount = 0; | |
2774 | pSMB->Reserved = 0; | |
2775 | pSMB->Flags = 0; | |
2776 | pSMB->Timeout = 0; | |
2777 | pSMB->Reserved2 = 0; | |
2778 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2779 | InformationLevel) - 4; |
1da177e4 LT |
2780 | offset = param_offset + params; |
2781 | ||
2782 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2783 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2784 | name_len_target = | |
acbbb76a SF |
2785 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2786 | /* find define for this maxpathcomponent */ | |
2787 | , nls_codepage); | |
1da177e4 LT |
2788 | name_len_target++; /* trailing null */ |
2789 | name_len_target *= 2; | |
50c2f753 | 2790 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2791 | name_len_target = strnlen(toName, PATH_MAX); |
2792 | name_len_target++; /* trailing null */ | |
2793 | strncpy(data_offset, toName, name_len_target); | |
2794 | } | |
2795 | ||
2796 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2797 | /* BB find exact max on data count below from sess */ | |
2798 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2799 | pSMB->SetupCount = 1; | |
2800 | pSMB->Reserved3 = 0; | |
2801 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2802 | byte_count = 3 /* pad */ + params + name_len_target; | |
2803 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2804 | pSMB->ParameterCount = cpu_to_le16(params); | |
2805 | pSMB->TotalDataCount = pSMB->DataCount; | |
2806 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2807 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2808 | pSMB->DataOffset = cpu_to_le16(offset); | |
2809 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2810 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2811 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2812 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2813 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2814 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2815 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2816 | if (rc) |
b6b38f70 | 2817 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2818 | |
0d817bc0 | 2819 | cifs_buf_release(pSMB); |
1da177e4 LT |
2820 | |
2821 | if (rc == -EAGAIN) | |
2822 | goto createSymLinkRetry; | |
2823 | ||
2824 | return rc; | |
2825 | } | |
2826 | ||
2827 | int | |
96daf2b0 | 2828 | CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2829 | const char *fromName, const char *toName, |
737b758c | 2830 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2831 | { |
2832 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2833 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2834 | char *data_offset; | |
2835 | int name_len; | |
2836 | int name_len_target; | |
2837 | int rc = 0; | |
2838 | int bytes_returned = 0; | |
2839 | __u16 params, param_offset, offset, byte_count; | |
2840 | ||
b6b38f70 | 2841 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2842 | createHardLinkRetry: |
2843 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2844 | (void **) &pSMBr); | |
2845 | if (rc) | |
2846 | return rc; | |
2847 | ||
2848 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2849 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2850 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2851 | name_len++; /* trailing null */ |
2852 | name_len *= 2; | |
2853 | ||
50c2f753 | 2854 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2855 | name_len = strnlen(toName, PATH_MAX); |
2856 | name_len++; /* trailing null */ | |
2857 | strncpy(pSMB->FileName, toName, name_len); | |
2858 | } | |
2859 | params = 6 + name_len; | |
2860 | pSMB->MaxSetupCount = 0; | |
2861 | pSMB->Reserved = 0; | |
2862 | pSMB->Flags = 0; | |
2863 | pSMB->Timeout = 0; | |
2864 | pSMB->Reserved2 = 0; | |
2865 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2866 | InformationLevel) - 4; |
1da177e4 LT |
2867 | offset = param_offset + params; |
2868 | ||
2869 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2870 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2871 | name_len_target = | |
acbbb76a SF |
2872 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2873 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2874 | name_len_target++; /* trailing null */ |
2875 | name_len_target *= 2; | |
50c2f753 | 2876 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2877 | name_len_target = strnlen(fromName, PATH_MAX); |
2878 | name_len_target++; /* trailing null */ | |
2879 | strncpy(data_offset, fromName, name_len_target); | |
2880 | } | |
2881 | ||
2882 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2883 | /* BB find exact max on data count below from sess*/ | |
2884 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2885 | pSMB->SetupCount = 1; | |
2886 | pSMB->Reserved3 = 0; | |
2887 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2888 | byte_count = 3 /* pad */ + params + name_len_target; | |
2889 | pSMB->ParameterCount = cpu_to_le16(params); | |
2890 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2891 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2892 | pSMB->TotalDataCount = pSMB->DataCount; | |
2893 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2894 | pSMB->DataOffset = cpu_to_le16(offset); | |
2895 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2896 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2897 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2898 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2899 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2900 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2901 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2902 | if (rc) |
b6b38f70 | 2903 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
2904 | |
2905 | cifs_buf_release(pSMB); | |
2906 | if (rc == -EAGAIN) | |
2907 | goto createHardLinkRetry; | |
2908 | ||
2909 | return rc; | |
2910 | } | |
2911 | ||
2912 | int | |
96daf2b0 | 2913 | CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2914 | const char *fromName, const char *toName, |
737b758c | 2915 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2916 | { |
2917 | int rc = 0; | |
2918 | NT_RENAME_REQ *pSMB = NULL; | |
2919 | RENAME_RSP *pSMBr = NULL; | |
2920 | int bytes_returned; | |
2921 | int name_len, name_len2; | |
2922 | __u16 count; | |
2923 | ||
b6b38f70 | 2924 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
2925 | winCreateHardLinkRetry: |
2926 | ||
2927 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2928 | (void **) &pSMBr); | |
2929 | if (rc) | |
2930 | return rc; | |
2931 | ||
2932 | pSMB->SearchAttributes = | |
2933 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2934 | ATTR_DIRECTORY); | |
2935 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2936 | pSMB->ClusterCount = 0; | |
2937 | ||
2938 | pSMB->BufferFormat = 0x04; | |
2939 | ||
2940 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2941 | name_len = | |
acbbb76a SF |
2942 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
2943 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2944 | name_len++; /* trailing null */ |
2945 | name_len *= 2; | |
fcc7c09d JL |
2946 | |
2947 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2948 | pSMB->OldFileName[name_len] = 0x04; | |
2949 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2950 | name_len2 = |
acbbb76a SF |
2951 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2952 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2953 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2954 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2955 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2956 | name_len = strnlen(fromName, PATH_MAX); |
2957 | name_len++; /* trailing null */ | |
2958 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2959 | name_len2 = strnlen(toName, PATH_MAX); | |
2960 | name_len2++; /* trailing null */ | |
2961 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2962 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2963 | name_len2++; /* trailing null */ | |
2964 | name_len2++; /* signature byte */ | |
2965 | } | |
2966 | ||
2967 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2968 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2969 | pSMB->ByteCount = cpu_to_le16(count); |
2970 | ||
2971 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2972 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2973 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2974 | if (rc) |
b6b38f70 | 2975 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 2976 | |
1da177e4 LT |
2977 | cifs_buf_release(pSMB); |
2978 | if (rc == -EAGAIN) | |
2979 | goto winCreateHardLinkRetry; | |
2980 | ||
2981 | return rc; | |
2982 | } | |
2983 | ||
2984 | int | |
96daf2b0 | 2985 | CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *tcon, |
460b9696 | 2986 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
2987 | const struct nls_table *nls_codepage) |
2988 | { | |
2989 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2990 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2991 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2992 | int rc = 0; | |
2993 | int bytes_returned; | |
2994 | int name_len; | |
2995 | __u16 params, byte_count; | |
460b9696 | 2996 | char *data_start; |
1da177e4 | 2997 | |
b6b38f70 | 2998 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
2999 | |
3000 | querySymLinkRetry: | |
3001 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3002 | (void **) &pSMBr); | |
3003 | if (rc) | |
3004 | return rc; | |
3005 | ||
3006 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3007 | name_len = | |
acbbb76a SF |
3008 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3009 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3010 | name_len++; /* trailing null */ |
3011 | name_len *= 2; | |
50c2f753 | 3012 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3013 | name_len = strnlen(searchName, PATH_MAX); |
3014 | name_len++; /* trailing null */ | |
3015 | strncpy(pSMB->FileName, searchName, name_len); | |
3016 | } | |
3017 | ||
3018 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3019 | pSMB->TotalDataCount = 0; | |
3020 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3021 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3022 | pSMB->MaxSetupCount = 0; |
3023 | pSMB->Reserved = 0; | |
3024 | pSMB->Flags = 0; | |
3025 | pSMB->Timeout = 0; | |
3026 | pSMB->Reserved2 = 0; | |
3027 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3028 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3029 | pSMB->DataCount = 0; |
3030 | pSMB->DataOffset = 0; | |
3031 | pSMB->SetupCount = 1; | |
3032 | pSMB->Reserved3 = 0; | |
3033 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3034 | byte_count = params + 1 /* pad */ ; | |
3035 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3036 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3037 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3038 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3039 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3040 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3041 | ||
3042 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3043 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3044 | if (rc) { | |
b6b38f70 | 3045 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
3046 | } else { |
3047 | /* decode response */ | |
3048 | ||
3049 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3050 | /* BB also check enough total bytes returned */ |
820a803f | 3051 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3052 | rc = -EIO; |
1da177e4 | 3053 | else { |
0e0d2cf3 | 3054 | bool is_unicode; |
460b9696 JL |
3055 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3056 | ||
3057 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3058 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3059 | |
0e0d2cf3 SF |
3060 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3061 | is_unicode = true; | |
3062 | else | |
3063 | is_unicode = false; | |
3064 | ||
737b758c | 3065 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3066 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3067 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3068 | if (!*symlinkinfo) |
460b9696 | 3069 | rc = -ENOMEM; |
1da177e4 LT |
3070 | } |
3071 | } | |
3072 | cifs_buf_release(pSMB); | |
3073 | if (rc == -EAGAIN) | |
3074 | goto querySymLinkRetry; | |
3075 | return rc; | |
3076 | } | |
3077 | ||
c52a9554 SF |
3078 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3079 | /* | |
3080 | * Recent Windows versions now create symlinks more frequently | |
3081 | * and they use the "reparse point" mechanism below. We can of course | |
3082 | * do symlinks nicely to Samba and other servers which support the | |
3083 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3084 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3085 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3086 | * In the interim this code has been moved to its own config option so | |
3087 | * it is not compiled in by default until callers fixed up and more tested. | |
3088 | */ | |
1da177e4 | 3089 | int |
96daf2b0 | 3090 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3091 | const unsigned char *searchName, |
50c2f753 | 3092 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3093 | const struct nls_table *nls_codepage) |
3094 | { | |
3095 | int rc = 0; | |
3096 | int bytes_returned; | |
50c2f753 SF |
3097 | struct smb_com_transaction_ioctl_req *pSMB; |
3098 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3099 | |
b6b38f70 | 3100 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
3101 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3102 | (void **) &pSMBr); | |
3103 | if (rc) | |
3104 | return rc; | |
3105 | ||
3106 | pSMB->TotalParameterCount = 0 ; | |
3107 | pSMB->TotalDataCount = 0; | |
3108 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3109 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3110 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3111 | pSMB->MaxSetupCount = 4; |
3112 | pSMB->Reserved = 0; | |
3113 | pSMB->ParameterOffset = 0; | |
3114 | pSMB->DataCount = 0; | |
3115 | pSMB->DataOffset = 0; | |
3116 | pSMB->SetupCount = 4; | |
3117 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3118 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3119 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3120 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3121 | pSMB->IsRootFlag = 0; | |
3122 | pSMB->Fid = fid; /* file handle always le */ | |
3123 | pSMB->ByteCount = 0; | |
3124 | ||
3125 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3126 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3127 | if (rc) { | |
b6b38f70 | 3128 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
3129 | } else { /* decode response */ |
3130 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3131 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3132 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3133 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3134 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3135 | goto qreparse_out; |
3136 | } | |
3137 | if (data_count && (data_count < 2048)) { | |
3138 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3139 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3140 | |
afe48c31 | 3141 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3142 | (struct reparse_data *) |
3143 | ((char *)&pSMBr->hdr.Protocol | |
3144 | + data_offset); | |
afe48c31 SF |
3145 | if ((char *)reparse_buf >= end_of_smb) { |
3146 | rc = -EIO; | |
3147 | goto qreparse_out; | |
3148 | } | |
3149 | if ((reparse_buf->LinkNamesBuf + | |
3150 | reparse_buf->TargetNameOffset + | |
3151 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 3152 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
3153 | rc = -EIO; |
3154 | goto qreparse_out; | |
3155 | } | |
50c2f753 | 3156 | |
afe48c31 SF |
3157 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3158 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3159 | (reparse_buf->LinkNamesBuf + |
3160 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3161 | buflen, |
3162 | reparse_buf->TargetNameLen, | |
3163 | nls_codepage, 0); | |
3164 | } else { /* ASCII names */ | |
3165 | strncpy(symlinkinfo, | |
3166 | reparse_buf->LinkNamesBuf + | |
3167 | reparse_buf->TargetNameOffset, | |
3168 | min_t(const int, buflen, | |
3169 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3170 | } |
afe48c31 SF |
3171 | } else { |
3172 | rc = -EIO; | |
b6b38f70 JP |
3173 | cFYI(1, "Invalid return data count on " |
3174 | "get reparse info ioctl"); | |
1da177e4 | 3175 | } |
afe48c31 SF |
3176 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3177 | does not go off the end of the buffer */ | |
b6b38f70 | 3178 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 3179 | } |
989c7e51 | 3180 | |
1da177e4 | 3181 | qreparse_out: |
4a6d87f1 | 3182 | cifs_buf_release(pSMB); |
1da177e4 LT |
3183 | |
3184 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3185 | since file handle passed in no longer valid */ | |
3186 | ||
3187 | return rc; | |
3188 | } | |
c52a9554 | 3189 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3190 | |
3191 | #ifdef CONFIG_CIFS_POSIX | |
3192 | ||
3193 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3194 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3195 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3196 | { |
3197 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3198 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3199 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3200 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 3201 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
3202 | |
3203 | return; | |
3204 | } | |
3205 | ||
3206 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3207 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3208 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3209 | { |
3210 | int size = 0; | |
3211 | int i; | |
3212 | __u16 count; | |
50c2f753 SF |
3213 | struct cifs_posix_ace *pACE; |
3214 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3215 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3216 | |
3217 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3218 | return -EOPNOTSUPP; | |
3219 | ||
790fe579 | 3220 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3221 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3222 | pACE = &cifs_acl->ace_array[0]; | |
3223 | size = sizeof(struct cifs_posix_acl); | |
3224 | size += sizeof(struct cifs_posix_ace) * count; | |
3225 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3226 | if (size_of_data_area < size) { |
b6b38f70 JP |
3227 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
3228 | size_of_data_area, size); | |
1da177e4 LT |
3229 | return -EINVAL; |
3230 | } | |
790fe579 | 3231 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3232 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3233 | size = sizeof(struct cifs_posix_acl); | |
3234 | size += sizeof(struct cifs_posix_ace) * count; | |
3235 | /* skip past access ACEs to get to default ACEs */ | |
3236 | pACE = &cifs_acl->ace_array[count]; | |
3237 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3238 | size += sizeof(struct cifs_posix_ace) * count; | |
3239 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3240 | if (size_of_data_area < size) |
1da177e4 LT |
3241 | return -EINVAL; |
3242 | } else { | |
3243 | /* illegal type */ | |
3244 | return -EINVAL; | |
3245 | } | |
3246 | ||
3247 | size = posix_acl_xattr_size(count); | |
790fe579 | 3248 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3249 | /* used to query ACL EA size */ |
790fe579 | 3250 | } else if (size > buflen) { |
1da177e4 LT |
3251 | return -ERANGE; |
3252 | } else /* buffer big enough */ { | |
ff7feac9 | 3253 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3254 | for (i = 0; i < count ; i++) { |
3255 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3256 | pACE++; | |
1da177e4 LT |
3257 | } |
3258 | } | |
3259 | return size; | |
3260 | } | |
3261 | ||
50c2f753 SF |
3262 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3263 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3264 | { |
3265 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3266 | ||
ff7feac9 SF |
3267 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3268 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3269 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3270 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3271 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3272 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3273 | } else |
ff7feac9 | 3274 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 3275 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
3276 | return rc; |
3277 | } | |
3278 | ||
3279 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3280 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3281 | const int buflen, const int acl_type) | |
1da177e4 LT |
3282 | { |
3283 | __u16 rc = 0; | |
50c2f753 SF |
3284 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3285 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3286 | int count; |
3287 | int i; | |
3288 | ||
790fe579 | 3289 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3290 | return 0; |
3291 | ||
3292 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 3293 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 3294 | "version of %d", |
b6b38f70 | 3295 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 3296 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3297 | cFYI(1, "unknown POSIX ACL version %d", |
3298 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3299 | return 0; |
3300 | } | |
3301 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3302 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3303 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3304 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3305 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3306 | else { |
b6b38f70 | 3307 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3308 | return 0; |
3309 | } | |
50c2f753 | 3310 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3311 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3312 | &local_acl->a_entries[i]); | |
790fe579 | 3313 | if (rc != 0) { |
1da177e4 LT |
3314 | /* ACE not converted */ |
3315 | break; | |
3316 | } | |
3317 | } | |
790fe579 | 3318 | if (rc == 0) { |
1da177e4 LT |
3319 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3320 | rc += sizeof(struct cifs_posix_acl); | |
3321 | /* BB add check to make sure ACL does not overflow SMB */ | |
3322 | } | |
3323 | return rc; | |
3324 | } | |
3325 | ||
3326 | int | |
96daf2b0 | 3327 | CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3328 | const unsigned char *searchName, |
3329 | char *acl_inf, const int buflen, const int acl_type, | |
3330 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3331 | { |
3332 | /* SMB_QUERY_POSIX_ACL */ | |
3333 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3334 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3335 | int rc = 0; | |
3336 | int bytes_returned; | |
3337 | int name_len; | |
3338 | __u16 params, byte_count; | |
50c2f753 | 3339 | |
b6b38f70 | 3340 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3341 | |
3342 | queryAclRetry: | |
3343 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3344 | (void **) &pSMBr); | |
3345 | if (rc) | |
3346 | return rc; | |
50c2f753 | 3347 | |
1da177e4 LT |
3348 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3349 | name_len = | |
acbbb76a SF |
3350 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3351 | searchName, PATH_MAX, nls_codepage, | |
3352 | remap); | |
1da177e4 LT |
3353 | name_len++; /* trailing null */ |
3354 | name_len *= 2; | |
3355 | pSMB->FileName[name_len] = 0; | |
3356 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3357 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3358 | name_len = strnlen(searchName, PATH_MAX); |
3359 | name_len++; /* trailing null */ | |
3360 | strncpy(pSMB->FileName, searchName, name_len); | |
3361 | } | |
3362 | ||
3363 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3364 | pSMB->TotalDataCount = 0; | |
3365 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3366 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3367 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3368 | pSMB->MaxSetupCount = 0; | |
3369 | pSMB->Reserved = 0; | |
3370 | pSMB->Flags = 0; | |
3371 | pSMB->Timeout = 0; | |
3372 | pSMB->Reserved2 = 0; | |
3373 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3374 | offsetof(struct smb_com_transaction2_qpi_req, |
3375 | InformationLevel) - 4); | |
1da177e4 LT |
3376 | pSMB->DataCount = 0; |
3377 | pSMB->DataOffset = 0; | |
3378 | pSMB->SetupCount = 1; | |
3379 | pSMB->Reserved3 = 0; | |
3380 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3381 | byte_count = params + 1 /* pad */ ; | |
3382 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3383 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3384 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3385 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3386 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3387 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3388 | ||
3389 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3390 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 3391 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 3392 | if (rc) { |
b6b38f70 | 3393 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3394 | } else { |
3395 | /* decode response */ | |
50c2f753 | 3396 | |
1da177e4 | 3397 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3398 | /* BB also check enough total bytes returned */ |
820a803f | 3399 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3400 | rc = -EIO; /* bad smb */ |
3401 | else { | |
3402 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3403 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3404 | rc = cifs_copy_posix_acl(acl_inf, | |
3405 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3406 | buflen, acl_type, count); |
1da177e4 LT |
3407 | } |
3408 | } | |
3409 | cifs_buf_release(pSMB); | |
3410 | if (rc == -EAGAIN) | |
3411 | goto queryAclRetry; | |
3412 | return rc; | |
3413 | } | |
3414 | ||
3415 | int | |
96daf2b0 | 3416 | CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3417 | const unsigned char *fileName, |
3418 | const char *local_acl, const int buflen, | |
3419 | const int acl_type, | |
3420 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3421 | { |
3422 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3423 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3424 | char *parm_data; | |
3425 | int name_len; | |
3426 | int rc = 0; | |
3427 | int bytes_returned = 0; | |
3428 | __u16 params, byte_count, data_count, param_offset, offset; | |
3429 | ||
b6b38f70 | 3430 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3431 | setAclRetry: |
3432 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3433 | (void **) &pSMBr); |
1da177e4 LT |
3434 | if (rc) |
3435 | return rc; | |
3436 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3437 | name_len = | |
acbbb76a SF |
3438 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3439 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3440 | name_len++; /* trailing null */ |
3441 | name_len *= 2; | |
50c2f753 | 3442 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3443 | name_len = strnlen(fileName, PATH_MAX); |
3444 | name_len++; /* trailing null */ | |
3445 | strncpy(pSMB->FileName, fileName, name_len); | |
3446 | } | |
3447 | params = 6 + name_len; | |
3448 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3449 | /* BB find max SMB size from sess */ |
3450 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3451 | pSMB->MaxSetupCount = 0; |
3452 | pSMB->Reserved = 0; | |
3453 | pSMB->Flags = 0; | |
3454 | pSMB->Timeout = 0; | |
3455 | pSMB->Reserved2 = 0; | |
3456 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3457 | InformationLevel) - 4; |
1da177e4 LT |
3458 | offset = param_offset + params; |
3459 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3460 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3461 | ||
3462 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3463 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3464 | |
790fe579 | 3465 | if (data_count == 0) { |
1da177e4 LT |
3466 | rc = -EOPNOTSUPP; |
3467 | goto setACLerrorExit; | |
3468 | } | |
3469 | pSMB->DataOffset = cpu_to_le16(offset); | |
3470 | pSMB->SetupCount = 1; | |
3471 | pSMB->Reserved3 = 0; | |
3472 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3473 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3474 | byte_count = 3 /* pad */ + params + data_count; | |
3475 | pSMB->DataCount = cpu_to_le16(data_count); | |
3476 | pSMB->TotalDataCount = pSMB->DataCount; | |
3477 | pSMB->ParameterCount = cpu_to_le16(params); | |
3478 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3479 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3480 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3481 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3482 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3483 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3484 | if (rc) |
b6b38f70 | 3485 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3486 | |
3487 | setACLerrorExit: | |
3488 | cifs_buf_release(pSMB); | |
3489 | if (rc == -EAGAIN) | |
3490 | goto setAclRetry; | |
3491 | return rc; | |
3492 | } | |
3493 | ||
f654bac2 SF |
3494 | /* BB fix tabs in this function FIXME BB */ |
3495 | int | |
96daf2b0 | 3496 | CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3497 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3498 | { |
50c2f753 SF |
3499 | int rc = 0; |
3500 | struct smb_t2_qfi_req *pSMB = NULL; | |
3501 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3502 | int bytes_returned; | |
3503 | __u16 params, byte_count; | |
f654bac2 | 3504 | |
b6b38f70 | 3505 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3506 | if (tcon == NULL) |
3507 | return -ENODEV; | |
f654bac2 SF |
3508 | |
3509 | GetExtAttrRetry: | |
790fe579 SF |
3510 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3511 | (void **) &pSMBr); | |
3512 | if (rc) | |
3513 | return rc; | |
f654bac2 | 3514 | |
ad7a2926 | 3515 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3516 | pSMB->t2.TotalDataCount = 0; |
3517 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3518 | /* BB find exact max data count below from sess structure BB */ | |
3519 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3520 | pSMB->t2.MaxSetupCount = 0; | |
3521 | pSMB->t2.Reserved = 0; | |
3522 | pSMB->t2.Flags = 0; | |
3523 | pSMB->t2.Timeout = 0; | |
3524 | pSMB->t2.Reserved2 = 0; | |
3525 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3526 | Fid) - 4); | |
3527 | pSMB->t2.DataCount = 0; | |
3528 | pSMB->t2.DataOffset = 0; | |
3529 | pSMB->t2.SetupCount = 1; | |
3530 | pSMB->t2.Reserved3 = 0; | |
3531 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3532 | byte_count = params + 1 /* pad */ ; | |
3533 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3534 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3535 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3536 | pSMB->Pad = 0; | |
f654bac2 | 3537 | pSMB->Fid = netfid; |
be8e3b00 | 3538 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3539 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3540 | ||
3541 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3542 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3543 | if (rc) { | |
b6b38f70 | 3544 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3545 | } else { |
3546 | /* decode response */ | |
3547 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3548 | /* BB also check enough total bytes returned */ |
820a803f | 3549 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3550 | /* If rc should we check for EOPNOSUPP and |
3551 | disable the srvino flag? or in caller? */ | |
3552 | rc = -EIO; /* bad smb */ | |
3553 | else { | |
3554 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3555 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3556 | struct file_chattr_info *pfinfo; | |
3557 | /* BB Do we need a cast or hash here ? */ | |
3558 | if (count != 16) { | |
b6b38f70 | 3559 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3560 | rc = -EIO; |
3561 | goto GetExtAttrOut; | |
3562 | } | |
3563 | pfinfo = (struct file_chattr_info *) | |
3564 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3565 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3566 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3567 | } |
3568 | } | |
f654bac2 | 3569 | GetExtAttrOut: |
790fe579 SF |
3570 | cifs_buf_release(pSMB); |
3571 | if (rc == -EAGAIN) | |
3572 | goto GetExtAttrRetry; | |
3573 | return rc; | |
f654bac2 SF |
3574 | } |
3575 | ||
f654bac2 | 3576 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3577 | |
79df1bae JL |
3578 | #ifdef CONFIG_CIFS_ACL |
3579 | /* | |
3580 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3581 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3582 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3583 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3584 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3585 | * by caller | |
3586 | */ | |
3587 | static int | |
3588 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3589 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3590 | void **ret_buf) |
3591 | { | |
3592 | int rc; | |
3593 | __u32 temp_offset; | |
3594 | struct smb_com_ntransact_req *pSMB; | |
3595 | ||
3596 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3597 | (void **)&pSMB); | |
3598 | if (rc) | |
3599 | return rc; | |
3600 | *ret_buf = (void *)pSMB; | |
3601 | pSMB->Reserved = 0; | |
3602 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3603 | pSMB->TotalDataCount = 0; | |
c974befa | 3604 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3605 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3606 | pSMB->DataCount = pSMB->TotalDataCount; | |
3607 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3608 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3609 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3610 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3611 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3612 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3613 | return 0; | |
3614 | } | |
3615 | ||
3616 | static int | |
3617 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3618 | __u32 *pparmlen, __u32 *pdatalen) | |
3619 | { | |
3620 | char *end_of_smb; | |
3621 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3622 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3623 | u16 bcc; |
79df1bae JL |
3624 | |
3625 | *pdatalen = 0; | |
3626 | *pparmlen = 0; | |
3627 | ||
3628 | if (buf == NULL) | |
3629 | return -EINVAL; | |
3630 | ||
3631 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3632 | ||
820a803f JL |
3633 | bcc = get_bcc(&pSMBr->hdr); |
3634 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3635 | (char *)&pSMBr->ByteCount; |
3636 | ||
3637 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3638 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3639 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3640 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3641 | ||
3642 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3643 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3644 | ||
3645 | /* should we also check that parm and data areas do not overlap? */ | |
3646 | if (*ppparm > end_of_smb) { | |
3647 | cFYI(1, "parms start after end of smb"); | |
3648 | return -EINVAL; | |
3649 | } else if (parm_count + *ppparm > end_of_smb) { | |
3650 | cFYI(1, "parm end after end of smb"); | |
3651 | return -EINVAL; | |
3652 | } else if (*ppdata > end_of_smb) { | |
3653 | cFYI(1, "data starts after end of smb"); | |
3654 | return -EINVAL; | |
3655 | } else if (data_count + *ppdata > end_of_smb) { | |
3656 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3657 | *ppdata, data_count, (data_count + *ppdata), | |
3658 | end_of_smb, pSMBr); | |
3659 | return -EINVAL; | |
820a803f | 3660 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3661 | cFYI(1, "parm count and data count larger than SMB"); |
3662 | return -EINVAL; | |
3663 | } | |
3664 | *pdatalen = data_count; | |
3665 | *pparmlen = parm_count; | |
3666 | return 0; | |
3667 | } | |
3668 | ||
0a4b92c0 SF |
3669 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3670 | int | |
96daf2b0 | 3671 | CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3672 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3673 | { |
3674 | int rc = 0; | |
3675 | int buf_type = 0; | |
ad7a2926 | 3676 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3677 | struct kvec iov[1]; |
3678 | ||
b6b38f70 | 3679 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3680 | |
630f3f0c SF |
3681 | *pbuflen = 0; |
3682 | *acl_inf = NULL; | |
3683 | ||
b9c7a2bb | 3684 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3685 | 8 /* parm len */, tcon, (void **) &pSMB); |
3686 | if (rc) | |
3687 | return rc; | |
3688 | ||
3689 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3690 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3691 | pSMB->MaxSetupCount = 0; | |
3692 | pSMB->Fid = fid; /* file handle always le */ | |
3693 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3694 | CIFS_ACL_DACL); | |
3695 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3696 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3697 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3698 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3699 | |
a761ac57 | 3700 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3701 | 0); |
0a4b92c0 SF |
3702 | cifs_stats_inc(&tcon->num_acl_get); |
3703 | if (rc) { | |
b6b38f70 | 3704 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3705 | } else { /* decode response */ |
ad7a2926 | 3706 | __le32 *parm; |
630f3f0c SF |
3707 | __u32 parm_len; |
3708 | __u32 acl_len; | |
50c2f753 | 3709 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3710 | char *pdata; |
0a4b92c0 SF |
3711 | |
3712 | /* validate_nttransact */ | |
50c2f753 | 3713 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3714 | &pdata, &parm_len, pbuflen); |
790fe579 | 3715 | if (rc) |
0a4b92c0 SF |
3716 | goto qsec_out; |
3717 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3718 | ||
b6b38f70 | 3719 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3720 | |
3721 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3722 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3723 | *pbuflen = 0; |
0a4b92c0 SF |
3724 | goto qsec_out; |
3725 | } | |
3726 | ||
3727 | /* BB check that data area is minimum length and as big as acl_len */ | |
3728 | ||
af6f4612 | 3729 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3730 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3731 | cERROR(1, "acl length %d does not match %d", |
3732 | acl_len, *pbuflen); | |
630f3f0c SF |
3733 | if (*pbuflen > acl_len) |
3734 | *pbuflen = acl_len; | |
3735 | } | |
0a4b92c0 | 3736 | |
630f3f0c SF |
3737 | /* check if buffer is big enough for the acl |
3738 | header followed by the smallest SID */ | |
3739 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3740 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3741 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3742 | rc = -EINVAL; |
3743 | *pbuflen = 0; | |
3744 | } else { | |
3745 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3746 | if (*acl_inf == NULL) { | |
3747 | *pbuflen = 0; | |
3748 | rc = -ENOMEM; | |
3749 | } | |
3750 | memcpy(*acl_inf, pdata, *pbuflen); | |
3751 | } | |
0a4b92c0 SF |
3752 | } |
3753 | qsec_out: | |
790fe579 | 3754 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3755 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3756 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3757 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3758 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3759 | return rc; |
3760 | } | |
97837582 SF |
3761 | |
3762 | int | |
96daf2b0 | 3763 | CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3764 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3765 | { |
3766 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3767 | int rc = 0; | |
3768 | int bytes_returned = 0; | |
3769 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3770 | void *pSMBr; |
97837582 SF |
3771 | |
3772 | setCifsAclRetry: | |
b2a3ad9c | 3773 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3774 | if (rc) |
b2a3ad9c | 3775 | return rc; |
97837582 SF |
3776 | |
3777 | pSMB->MaxSetupCount = 0; | |
3778 | pSMB->Reserved = 0; | |
3779 | ||
3780 | param_count = 8; | |
3781 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3782 | data_count = acllen; | |
3783 | data_offset = param_offset + param_count; | |
3784 | byte_count = 3 /* pad */ + param_count; | |
3785 | ||
3786 | pSMB->DataCount = cpu_to_le32(data_count); | |
3787 | pSMB->TotalDataCount = pSMB->DataCount; | |
3788 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3789 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3790 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3791 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3792 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3793 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3794 | pSMB->SetupCount = 0; | |
3795 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3796 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3797 | ||
3798 | pSMB->Fid = fid; /* file handle always le */ | |
3799 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3800 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3801 | |
3802 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3803 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3804 | data_offset, pntsd, acllen); | |
be8e3b00 | 3805 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3806 | } else |
be8e3b00 | 3807 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3808 | |
3809 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3810 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3811 | ||
b6b38f70 | 3812 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3813 | if (rc) |
b6b38f70 | 3814 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3815 | cifs_buf_release(pSMB); |
3816 | ||
3817 | if (rc == -EAGAIN) | |
3818 | goto setCifsAclRetry; | |
3819 | ||
3820 | return (rc); | |
3821 | } | |
3822 | ||
79df1bae | 3823 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3824 | |
6b8edfe0 SF |
3825 | /* Legacy Query Path Information call for lookup to old servers such |
3826 | as Win9x/WinME */ | |
96daf2b0 | 3827 | int SMBQueryInformation(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3828 | const unsigned char *searchName, |
3829 | FILE_ALL_INFO *pFinfo, | |
3830 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3831 | { |
ad7a2926 SF |
3832 | QUERY_INFORMATION_REQ *pSMB; |
3833 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3834 | int rc = 0; |
3835 | int bytes_returned; | |
3836 | int name_len; | |
3837 | ||
b6b38f70 | 3838 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3839 | QInfRetry: |
3840 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3841 | (void **) &pSMBr); |
6b8edfe0 SF |
3842 | if (rc) |
3843 | return rc; | |
3844 | ||
3845 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3846 | name_len = | |
acbbb76a SF |
3847 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3848 | searchName, PATH_MAX, nls_codepage, | |
3849 | remap); | |
6b8edfe0 SF |
3850 | name_len++; /* trailing null */ |
3851 | name_len *= 2; | |
50c2f753 | 3852 | } else { |
6b8edfe0 SF |
3853 | name_len = strnlen(searchName, PATH_MAX); |
3854 | name_len++; /* trailing null */ | |
3855 | strncpy(pSMB->FileName, searchName, name_len); | |
3856 | } | |
3857 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3858 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3859 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3860 | pSMB->ByteCount = cpu_to_le16(name_len); |
3861 | ||
3862 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3863 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3864 | if (rc) { |
b6b38f70 | 3865 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3866 | } else if (pFinfo) { |
1bd5bbcb SF |
3867 | struct timespec ts; |
3868 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3869 | |
3870 | /* decode response */ | |
1bd5bbcb | 3871 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3872 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3873 | ts.tv_nsec = 0; |
3874 | ts.tv_sec = time; | |
3875 | /* decode time fields */ | |
733f99ac | 3876 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3877 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3878 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3879 | pFinfo->AllocationSize = |
3880 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3881 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3882 | pFinfo->Attributes = | |
3883 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3884 | } else |
3885 | rc = -EIO; /* bad buffer passed in */ | |
3886 | ||
3887 | cifs_buf_release(pSMB); | |
3888 | ||
3889 | if (rc == -EAGAIN) | |
3890 | goto QInfRetry; | |
3891 | ||
3892 | return rc; | |
3893 | } | |
3894 | ||
bcd5357f | 3895 | int |
96daf2b0 | 3896 | CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3897 | u16 netfid, FILE_ALL_INFO *pFindData) |
3898 | { | |
3899 | struct smb_t2_qfi_req *pSMB = NULL; | |
3900 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3901 | int rc = 0; | |
3902 | int bytes_returned; | |
3903 | __u16 params, byte_count; | |
3904 | ||
3905 | QFileInfoRetry: | |
3906 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3907 | (void **) &pSMBr); | |
3908 | if (rc) | |
3909 | return rc; | |
3910 | ||
3911 | params = 2 /* level */ + 2 /* fid */; | |
3912 | pSMB->t2.TotalDataCount = 0; | |
3913 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3914 | /* BB find exact max data count below from sess structure BB */ | |
3915 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3916 | pSMB->t2.MaxSetupCount = 0; | |
3917 | pSMB->t2.Reserved = 0; | |
3918 | pSMB->t2.Flags = 0; | |
3919 | pSMB->t2.Timeout = 0; | |
3920 | pSMB->t2.Reserved2 = 0; | |
3921 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3922 | Fid) - 4); | |
3923 | pSMB->t2.DataCount = 0; | |
3924 | pSMB->t2.DataOffset = 0; | |
3925 | pSMB->t2.SetupCount = 1; | |
3926 | pSMB->t2.Reserved3 = 0; | |
3927 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3928 | byte_count = params + 1 /* pad */ ; | |
3929 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3930 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3931 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3932 | pSMB->Pad = 0; | |
3933 | pSMB->Fid = netfid; | |
be8e3b00 | 3934 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 3935 | |
bcd5357f JL |
3936 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3937 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3938 | if (rc) { | |
f19159dc | 3939 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
3940 | } else { /* decode response */ |
3941 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3942 | |
bcd5357f JL |
3943 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3944 | rc = -EIO; | |
820a803f | 3945 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3946 | rc = -EIO; /* bad smb */ |
3947 | else if (pFindData) { | |
3948 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3949 | memcpy((char *) pFindData, | |
3950 | (char *) &pSMBr->hdr.Protocol + | |
3951 | data_offset, sizeof(FILE_ALL_INFO)); | |
3952 | } else | |
3953 | rc = -ENOMEM; | |
3954 | } | |
3955 | cifs_buf_release(pSMB); | |
3956 | if (rc == -EAGAIN) | |
3957 | goto QFileInfoRetry; | |
6b8edfe0 | 3958 | |
bcd5357f JL |
3959 | return rc; |
3960 | } | |
6b8edfe0 | 3961 | |
1da177e4 | 3962 | int |
96daf2b0 | 3963 | CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3964 | const unsigned char *searchName, |
ad7a2926 | 3965 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3966 | int legacy /* old style infolevel */, |
737b758c | 3967 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3968 | { |
3969 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3970 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3971 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3972 | int rc = 0; | |
3973 | int bytes_returned; | |
3974 | int name_len; | |
3975 | __u16 params, byte_count; | |
3976 | ||
b6b38f70 | 3977 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
3978 | QPathInfoRetry: |
3979 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3980 | (void **) &pSMBr); | |
3981 | if (rc) | |
3982 | return rc; | |
3983 | ||
3984 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3985 | name_len = | |
acbbb76a SF |
3986 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
3987 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3988 | name_len++; /* trailing null */ |
3989 | name_len *= 2; | |
50c2f753 | 3990 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3991 | name_len = strnlen(searchName, PATH_MAX); |
3992 | name_len++; /* trailing null */ | |
3993 | strncpy(pSMB->FileName, searchName, name_len); | |
3994 | } | |
3995 | ||
50c2f753 | 3996 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3997 | pSMB->TotalDataCount = 0; |
3998 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3999 | /* BB find exact max SMB PDU from sess structure BB */ |
4000 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4001 | pSMB->MaxSetupCount = 0; |
4002 | pSMB->Reserved = 0; | |
4003 | pSMB->Flags = 0; | |
4004 | pSMB->Timeout = 0; | |
4005 | pSMB->Reserved2 = 0; | |
4006 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4007 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4008 | pSMB->DataCount = 0; |
4009 | pSMB->DataOffset = 0; | |
4010 | pSMB->SetupCount = 1; | |
4011 | pSMB->Reserved3 = 0; | |
4012 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4013 | byte_count = params + 1 /* pad */ ; | |
4014 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4015 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4016 | if (legacy) |
acf1a1b1 SF |
4017 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4018 | else | |
4019 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4020 | pSMB->Reserved4 = 0; |
be8e3b00 | 4021 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4022 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4023 | ||
4024 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4025 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4026 | if (rc) { | |
b6b38f70 | 4027 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4028 | } else { /* decode response */ |
4029 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4030 | ||
acf1a1b1 SF |
4031 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4032 | rc = -EIO; | |
820a803f | 4033 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4034 | rc = -EIO; /* bad smb */ |
820a803f | 4035 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4036 | rc = -EIO; /* 24 or 26 expected but we do not read |
4037 | last field */ | |
4038 | else if (pFindData) { | |
acf1a1b1 | 4039 | int size; |
1da177e4 | 4040 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
4041 | |
4042 | /* On legacy responses we do not read the last field, | |
4043 | EAsize, fortunately since it varies by subdialect and | |
4044 | also note it differs on Set vs. Get, ie two bytes or 4 | |
4045 | bytes depending but we don't care here */ | |
4046 | if (legacy) | |
acf1a1b1 SF |
4047 | size = sizeof(FILE_INFO_STANDARD); |
4048 | else | |
4049 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
4050 | memcpy((char *) pFindData, |
4051 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 4052 | data_offset, size); |
1da177e4 LT |
4053 | } else |
4054 | rc = -ENOMEM; | |
4055 | } | |
4056 | cifs_buf_release(pSMB); | |
4057 | if (rc == -EAGAIN) | |
4058 | goto QPathInfoRetry; | |
4059 | ||
4060 | return rc; | |
4061 | } | |
4062 | ||
c8634fd3 | 4063 | int |
96daf2b0 | 4064 | CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4065 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4066 | { | |
4067 | struct smb_t2_qfi_req *pSMB = NULL; | |
4068 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4069 | int rc = 0; | |
4070 | int bytes_returned; | |
4071 | __u16 params, byte_count; | |
4072 | ||
4073 | UnixQFileInfoRetry: | |
4074 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4075 | (void **) &pSMBr); | |
4076 | if (rc) | |
4077 | return rc; | |
4078 | ||
4079 | params = 2 /* level */ + 2 /* fid */; | |
4080 | pSMB->t2.TotalDataCount = 0; | |
4081 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4082 | /* BB find exact max data count below from sess structure BB */ | |
4083 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4084 | pSMB->t2.MaxSetupCount = 0; | |
4085 | pSMB->t2.Reserved = 0; | |
4086 | pSMB->t2.Flags = 0; | |
4087 | pSMB->t2.Timeout = 0; | |
4088 | pSMB->t2.Reserved2 = 0; | |
4089 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4090 | Fid) - 4); | |
4091 | pSMB->t2.DataCount = 0; | |
4092 | pSMB->t2.DataOffset = 0; | |
4093 | pSMB->t2.SetupCount = 1; | |
4094 | pSMB->t2.Reserved3 = 0; | |
4095 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4096 | byte_count = params + 1 /* pad */ ; | |
4097 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4098 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4099 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4100 | pSMB->Pad = 0; | |
4101 | pSMB->Fid = netfid; | |
be8e3b00 | 4102 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4103 | |
4104 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4105 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4106 | if (rc) { | |
f19159dc | 4107 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
4108 | } else { /* decode response */ |
4109 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4110 | ||
820a803f | 4111 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 4112 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 4113 | "Unix Extensions can be disabled on mount " |
f19159dc | 4114 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
4115 | rc = -EIO; /* bad smb */ |
4116 | } else { | |
4117 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4118 | memcpy((char *) pFindData, | |
4119 | (char *) &pSMBr->hdr.Protocol + | |
4120 | data_offset, | |
4121 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4122 | } | |
4123 | } | |
4124 | ||
4125 | cifs_buf_release(pSMB); | |
4126 | if (rc == -EAGAIN) | |
4127 | goto UnixQFileInfoRetry; | |
4128 | ||
4129 | return rc; | |
4130 | } | |
4131 | ||
1da177e4 | 4132 | int |
96daf2b0 | 4133 | CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 4134 | const unsigned char *searchName, |
582d21e5 | 4135 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4136 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4137 | { |
4138 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4139 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4140 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4141 | int rc = 0; | |
4142 | int bytes_returned = 0; | |
4143 | int name_len; | |
4144 | __u16 params, byte_count; | |
4145 | ||
b6b38f70 | 4146 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
4147 | UnixQPathInfoRetry: |
4148 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4149 | (void **) &pSMBr); | |
4150 | if (rc) | |
4151 | return rc; | |
4152 | ||
4153 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4154 | name_len = | |
acbbb76a SF |
4155 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4156 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4157 | name_len++; /* trailing null */ |
4158 | name_len *= 2; | |
50c2f753 | 4159 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4160 | name_len = strnlen(searchName, PATH_MAX); |
4161 | name_len++; /* trailing null */ | |
4162 | strncpy(pSMB->FileName, searchName, name_len); | |
4163 | } | |
4164 | ||
50c2f753 | 4165 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4166 | pSMB->TotalDataCount = 0; |
4167 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4168 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4169 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4170 | pSMB->MaxSetupCount = 0; |
4171 | pSMB->Reserved = 0; | |
4172 | pSMB->Flags = 0; | |
4173 | pSMB->Timeout = 0; | |
4174 | pSMB->Reserved2 = 0; | |
4175 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4176 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4177 | pSMB->DataCount = 0; |
4178 | pSMB->DataOffset = 0; | |
4179 | pSMB->SetupCount = 1; | |
4180 | pSMB->Reserved3 = 0; | |
4181 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4182 | byte_count = params + 1 /* pad */ ; | |
4183 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4184 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4185 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4186 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4187 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4188 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4189 | ||
4190 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4191 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4192 | if (rc) { | |
b6b38f70 | 4193 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4194 | } else { /* decode response */ |
4195 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4196 | ||
820a803f | 4197 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 4198 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 4199 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 4200 | "by specifying the nosfu mount option."); |
1da177e4 LT |
4201 | rc = -EIO; /* bad smb */ |
4202 | } else { | |
4203 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4204 | memcpy((char *) pFindData, | |
4205 | (char *) &pSMBr->hdr.Protocol + | |
4206 | data_offset, | |
630f3f0c | 4207 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4208 | } |
4209 | } | |
4210 | cifs_buf_release(pSMB); | |
4211 | if (rc == -EAGAIN) | |
4212 | goto UnixQPathInfoRetry; | |
4213 | ||
4214 | return rc; | |
4215 | } | |
4216 | ||
1da177e4 LT |
4217 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4218 | int | |
96daf2b0 | 4219 | CIFSFindFirst(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4220 | const char *searchName, |
1da177e4 | 4221 | const struct nls_table *nls_codepage, |
2608bee7 | 4222 | __u16 *pnetfid, __u16 search_flags, |
50c2f753 | 4223 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) |
1da177e4 LT |
4224 | { |
4225 | /* level 257 SMB_ */ | |
4226 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4227 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4228 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4229 | int rc = 0; |
4230 | int bytes_returned = 0; | |
4231 | int name_len; | |
4232 | __u16 params, byte_count; | |
4233 | ||
b6b38f70 | 4234 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
4235 | |
4236 | findFirstRetry: | |
4237 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4238 | (void **) &pSMBr); | |
4239 | if (rc) | |
4240 | return rc; | |
4241 | ||
4242 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4243 | name_len = | |
acbbb76a SF |
4244 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4245 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4246 | /* We can not add the asterik earlier in case |
4247 | it got remapped to 0xF03A as if it were part of the | |
4248 | directory name instead of a wildcard */ | |
1da177e4 | 4249 | name_len *= 2; |
ac67055e | 4250 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
4251 | pSMB->FileName[name_len+1] = 0; |
4252 | pSMB->FileName[name_len+2] = '*'; | |
4253 | pSMB->FileName[name_len+3] = 0; | |
4254 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
4255 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
4256 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 4257 | name_len += 2; |
1da177e4 LT |
4258 | } else { /* BB add check for overrun of SMB buf BB */ |
4259 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4260 | /* BB fix here and in unicode clause above ie |
790fe579 | 4261 | if (name_len > buffersize-header) |
1da177e4 LT |
4262 | free buffer exit; BB */ |
4263 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 4264 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
4265 | pSMB->FileName[name_len+1] = '*'; |
4266 | pSMB->FileName[name_len+2] = 0; | |
4267 | name_len += 3; | |
1da177e4 LT |
4268 | } |
4269 | ||
4270 | params = 12 + name_len /* includes null */ ; | |
4271 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4272 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4273 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4274 | pSMB->MaxSetupCount = 0; |
4275 | pSMB->Reserved = 0; | |
4276 | pSMB->Flags = 0; | |
4277 | pSMB->Timeout = 0; | |
4278 | pSMB->Reserved2 = 0; | |
4279 | byte_count = params + 1 /* pad */ ; | |
4280 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4281 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4282 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4283 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4284 | - 4); | |
1da177e4 LT |
4285 | pSMB->DataCount = 0; |
4286 | pSMB->DataOffset = 0; | |
4287 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4288 | pSMB->Reserved3 = 0; | |
4289 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4290 | pSMB->SearchAttributes = | |
4291 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4292 | ATTR_DIRECTORY); | |
50c2f753 | 4293 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4294 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4295 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4296 | ||
4297 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4298 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4299 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4300 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4301 | ||
4302 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4303 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4304 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 4305 | |
88274815 SF |
4306 | if (rc) {/* BB add logic to retry regular search if Unix search |
4307 | rejected unexpectedly by server */ | |
1da177e4 | 4308 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4309 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4310 | |
88274815 | 4311 | cifs_buf_release(pSMB); |
1da177e4 LT |
4312 | |
4313 | /* BB eventually could optimize out free and realloc of buf */ | |
4314 | /* for this case */ | |
4315 | if (rc == -EAGAIN) | |
4316 | goto findFirstRetry; | |
4317 | } else { /* decode response */ | |
4318 | /* BB remember to free buffer if error BB */ | |
4319 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4320 | if (rc == 0) { |
b77d753c SF |
4321 | unsigned int lnoff; |
4322 | ||
1da177e4 | 4323 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4324 | psrch_inf->unicode = true; |
1da177e4 | 4325 | else |
4b18f2a9 | 4326 | psrch_inf->unicode = false; |
1da177e4 LT |
4327 | |
4328 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4329 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4330 | psrch_inf->srch_entries_start = |
4331 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4332 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4333 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4334 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4335 | ||
790fe579 | 4336 | if (parms->EndofSearch) |
4b18f2a9 | 4337 | psrch_inf->endOfSearch = true; |
1da177e4 | 4338 | else |
4b18f2a9 | 4339 | psrch_inf->endOfSearch = false; |
1da177e4 | 4340 | |
50c2f753 SF |
4341 | psrch_inf->entries_in_buffer = |
4342 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4343 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4344 | psrch_inf->entries_in_buffer; |
b77d753c | 4345 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4346 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4347 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4348 | psrch_inf->last_entry = NULL; |
4349 | return rc; | |
4350 | } | |
4351 | ||
0752f152 | 4352 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4353 | lnoff; |
4354 | ||
1da177e4 LT |
4355 | *pnetfid = parms->SearchHandle; |
4356 | } else { | |
4357 | cifs_buf_release(pSMB); | |
4358 | } | |
4359 | } | |
4360 | ||
4361 | return rc; | |
4362 | } | |
4363 | ||
2608bee7 SP |
4364 | int CIFSFindNext(const int xid, struct cifs_tcon *tcon, __u16 searchHandle, |
4365 | __u16 search_flags, struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4366 | { |
4367 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4368 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4369 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4370 | char *response_data; |
4371 | int rc = 0; | |
9438fabb JL |
4372 | int bytes_returned; |
4373 | unsigned int name_len; | |
1da177e4 LT |
4374 | __u16 params, byte_count; |
4375 | ||
b6b38f70 | 4376 | cFYI(1, "In FindNext"); |
1da177e4 | 4377 | |
4b18f2a9 | 4378 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4379 | return -ENOENT; |
4380 | ||
4381 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4382 | (void **) &pSMBr); | |
4383 | if (rc) | |
4384 | return rc; | |
4385 | ||
50c2f753 | 4386 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4387 | byte_count = 0; |
4388 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4389 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4390 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4391 | pSMB->MaxSetupCount = 0; |
4392 | pSMB->Reserved = 0; | |
4393 | pSMB->Flags = 0; | |
4394 | pSMB->Timeout = 0; | |
4395 | pSMB->Reserved2 = 0; | |
4396 | pSMB->ParameterOffset = cpu_to_le16( | |
4397 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4398 | pSMB->DataCount = 0; | |
4399 | pSMB->DataOffset = 0; | |
4400 | pSMB->SetupCount = 1; | |
4401 | pSMB->Reserved3 = 0; | |
4402 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4403 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4404 | pSMB->SearchCount = | |
630f3f0c | 4405 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4406 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4407 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4408 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4409 | |
4410 | name_len = psrch_inf->resume_name_len; | |
4411 | params += name_len; | |
790fe579 | 4412 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4413 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4414 | byte_count += name_len; | |
ef6724e3 SF |
4415 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4416 | pSMB->ResumeFileName[name_len] = 0; | |
4417 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4418 | } else { |
4419 | rc = -EINVAL; | |
4420 | goto FNext2_err_exit; | |
4421 | } | |
4422 | byte_count = params + 1 /* pad */ ; | |
4423 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4424 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4425 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4426 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4427 | |
1da177e4 LT |
4428 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4429 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4430 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
4431 | if (rc) { |
4432 | if (rc == -EBADF) { | |
4b18f2a9 | 4433 | psrch_inf->endOfSearch = true; |
6353450a | 4434 | cifs_buf_release(pSMB); |
50c2f753 | 4435 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4436 | } else |
b6b38f70 | 4437 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4438 | } else { /* decode response */ |
4439 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4440 | |
790fe579 | 4441 | if (rc == 0) { |
b77d753c SF |
4442 | unsigned int lnoff; |
4443 | ||
1da177e4 LT |
4444 | /* BB fixme add lock for file (srch_info) struct here */ |
4445 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4446 | psrch_inf->unicode = true; |
1da177e4 | 4447 | else |
4b18f2a9 | 4448 | psrch_inf->unicode = false; |
1da177e4 LT |
4449 | response_data = (char *) &pSMBr->hdr.Protocol + |
4450 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4451 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4452 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4453 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4454 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4455 | cifs_small_buf_release( |
4456 | psrch_inf->ntwrk_buf_start); | |
4457 | else | |
4458 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4459 | psrch_inf->srch_entries_start = response_data; |
4460 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4461 | psrch_inf->smallBuf = 0; |
790fe579 | 4462 | if (parms->EndofSearch) |
4b18f2a9 | 4463 | psrch_inf->endOfSearch = true; |
1da177e4 | 4464 | else |
4b18f2a9 | 4465 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4466 | psrch_inf->entries_in_buffer = |
4467 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4468 | psrch_inf->index_of_last_entry += |
4469 | psrch_inf->entries_in_buffer; | |
b77d753c | 4470 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4471 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4472 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4473 | psrch_inf->last_entry = NULL; |
4474 | return rc; | |
4475 | } else | |
4476 | psrch_inf->last_entry = | |
4477 | psrch_inf->srch_entries_start + lnoff; | |
4478 | ||
b6b38f70 JP |
4479 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4480 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4481 | |
4482 | /* BB fixme add unlock here */ | |
4483 | } | |
4484 | ||
4485 | } | |
4486 | ||
4487 | /* BB On error, should we leave previous search buf (and count and | |
4488 | last entry fields) intact or free the previous one? */ | |
4489 | ||
4490 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4491 | since file handle passed in no longer valid */ | |
4492 | FNext2_err_exit: | |
4493 | if (rc != 0) | |
4494 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4495 | return rc; |
4496 | } | |
4497 | ||
4498 | int | |
96daf2b0 | 4499 | CIFSFindClose(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4500 | const __u16 searchHandle) |
1da177e4 LT |
4501 | { |
4502 | int rc = 0; | |
4503 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4504 | |
b6b38f70 | 4505 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4506 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4507 | ||
4508 | /* no sense returning error if session restarted | |
4509 | as file handle has been closed */ | |
790fe579 | 4510 | if (rc == -EAGAIN) |
1da177e4 LT |
4511 | return 0; |
4512 | if (rc) | |
4513 | return rc; | |
4514 | ||
1da177e4 LT |
4515 | pSMB->FileID = searchHandle; |
4516 | pSMB->ByteCount = 0; | |
792af7b0 | 4517 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4518 | if (rc) |
b6b38f70 | 4519 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4520 | |
a4544347 | 4521 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
4522 | |
4523 | /* Since session is dead, search handle closed on server already */ | |
4524 | if (rc == -EAGAIN) | |
4525 | rc = 0; | |
4526 | ||
4527 | return rc; | |
4528 | } | |
4529 | ||
1da177e4 | 4530 | int |
96daf2b0 | 4531 | CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4532 | const unsigned char *searchName, |
ad7a2926 | 4533 | __u64 *inode_number, |
50c2f753 | 4534 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4535 | { |
4536 | int rc = 0; | |
4537 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4538 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4539 | int name_len, bytes_returned; | |
4540 | __u16 params, byte_count; | |
4541 | ||
b6b38f70 | 4542 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 4543 | if (tcon == NULL) |
50c2f753 | 4544 | return -ENODEV; |
1da177e4 LT |
4545 | |
4546 | GetInodeNumberRetry: | |
4547 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4548 | (void **) &pSMBr); |
1da177e4 LT |
4549 | if (rc) |
4550 | return rc; | |
4551 | ||
1da177e4 LT |
4552 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4553 | name_len = | |
acbbb76a SF |
4554 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
4555 | searchName, PATH_MAX, nls_codepage, | |
4556 | remap); | |
1da177e4 LT |
4557 | name_len++; /* trailing null */ |
4558 | name_len *= 2; | |
50c2f753 | 4559 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4560 | name_len = strnlen(searchName, PATH_MAX); |
4561 | name_len++; /* trailing null */ | |
4562 | strncpy(pSMB->FileName, searchName, name_len); | |
4563 | } | |
4564 | ||
4565 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4566 | pSMB->TotalDataCount = 0; | |
4567 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4568 | /* BB find exact max data count below from sess structure BB */ | |
4569 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4570 | pSMB->MaxSetupCount = 0; | |
4571 | pSMB->Reserved = 0; | |
4572 | pSMB->Flags = 0; | |
4573 | pSMB->Timeout = 0; | |
4574 | pSMB->Reserved2 = 0; | |
4575 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4576 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4577 | pSMB->DataCount = 0; |
4578 | pSMB->DataOffset = 0; | |
4579 | pSMB->SetupCount = 1; | |
4580 | pSMB->Reserved3 = 0; | |
4581 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4582 | byte_count = params + 1 /* pad */ ; | |
4583 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4584 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4585 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4586 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4587 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4588 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4589 | ||
4590 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4591 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4592 | if (rc) { | |
b6b38f70 | 4593 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4594 | } else { |
4595 | /* decode response */ | |
4596 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4597 | /* BB also check enough total bytes returned */ |
820a803f | 4598 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4599 | /* If rc should we check for EOPNOSUPP and |
4600 | disable the srvino flag? or in caller? */ | |
4601 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4602 | else { |
1da177e4 LT |
4603 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4604 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4605 | struct file_internal_info *pfinfo; |
1da177e4 | 4606 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4607 | if (count < 8) { |
b6b38f70 | 4608 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4609 | rc = -EIO; |
4610 | goto GetInodeNumOut; | |
4611 | } | |
4612 | pfinfo = (struct file_internal_info *) | |
4613 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4614 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4615 | } |
4616 | } | |
4617 | GetInodeNumOut: | |
4618 | cifs_buf_release(pSMB); | |
4619 | if (rc == -EAGAIN) | |
4620 | goto GetInodeNumberRetry; | |
4621 | return rc; | |
4622 | } | |
1da177e4 | 4623 | |
fec4585f IM |
4624 | /* parses DFS refferal V3 structure |
4625 | * caller is responsible for freeing target_nodes | |
4626 | * returns: | |
4627 | * on success - 0 | |
4628 | * on failure - errno | |
4629 | */ | |
4630 | static int | |
a1fe78f1 | 4631 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4632 | unsigned int *num_of_nodes, |
4633 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4634 | const struct nls_table *nls_codepage, int remap, |
4635 | const char *searchName) | |
fec4585f IM |
4636 | { |
4637 | int i, rc = 0; | |
4638 | char *data_end; | |
4639 | bool is_unicode; | |
4640 | struct dfs_referral_level_3 *ref; | |
4641 | ||
5ca33c6a HH |
4642 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4643 | is_unicode = true; | |
4644 | else | |
4645 | is_unicode = false; | |
fec4585f IM |
4646 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4647 | ||
4648 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4649 | cERROR(1, "num_referrals: must be at least > 0," |
4650 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4651 | rc = -EINVAL; |
a1fe78f1 | 4652 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4653 | } |
4654 | ||
4655 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4656 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4657 | cERROR(1, "Referrals of V%d version are not supported," |
4658 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4659 | rc = -EINVAL; |
a1fe78f1 | 4660 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4661 | } |
4662 | ||
4663 | /* get the upper boundary of the resp buffer */ | |
4664 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4665 | le16_to_cpu(pSMBr->t2.DataCount); | |
4666 | ||
f19159dc | 4667 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4668 | *num_of_nodes, |
b6b38f70 | 4669 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4670 | |
4671 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4672 | *num_of_nodes, GFP_KERNEL); | |
4673 | if (*target_nodes == NULL) { | |
b6b38f70 | 4674 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4675 | rc = -ENOMEM; |
a1fe78f1 | 4676 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4677 | } |
4678 | ||
3ad2f3fb | 4679 | /* collect necessary data from referrals */ |
fec4585f IM |
4680 | for (i = 0; i < *num_of_nodes; i++) { |
4681 | char *temp; | |
4682 | int max_len; | |
4683 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4684 | ||
0e0d2cf3 | 4685 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4686 | if (is_unicode) { |
331c3135 JL |
4687 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4688 | GFP_KERNEL); | |
2920ee2b SF |
4689 | if (tmp == NULL) { |
4690 | rc = -ENOMEM; | |
4691 | goto parse_DFS_referrals_exit; | |
4692 | } | |
acbbb76a SF |
4693 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4694 | PATH_MAX, nls_codepage, remap); | |
4695 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4696 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4697 | nls_codepage); |
4698 | kfree(tmp); | |
4699 | } else | |
4700 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4701 | ||
fec4585f IM |
4702 | node->server_type = le16_to_cpu(ref->ServerType); |
4703 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4704 | ||
4705 | /* copy DfsPath */ | |
4706 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4707 | max_len = data_end - temp; | |
acbbb76a SF |
4708 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4709 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4710 | if (!node->path_name) { |
4711 | rc = -ENOMEM; | |
a1fe78f1 | 4712 | goto parse_DFS_referrals_exit; |
066ce689 | 4713 | } |
fec4585f IM |
4714 | |
4715 | /* copy link target UNC */ | |
4716 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4717 | max_len = data_end - temp; | |
acbbb76a SF |
4718 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4719 | is_unicode, nls_codepage); | |
d8f2799b | 4720 | if (!node->node_name) { |
d8e2f53a | 4721 | rc = -ENOMEM; |
d8f2799b SM |
4722 | goto parse_DFS_referrals_exit; |
4723 | } | |
4724 | ||
4725 | ref++; | |
fec4585f IM |
4726 | } |
4727 | ||
a1fe78f1 | 4728 | parse_DFS_referrals_exit: |
fec4585f IM |
4729 | if (rc) { |
4730 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4731 | *target_nodes = NULL; | |
4732 | *num_of_nodes = 0; | |
4733 | } | |
4734 | return rc; | |
4735 | } | |
4736 | ||
1da177e4 | 4737 | int |
96daf2b0 | 4738 | CIFSGetDFSRefer(const int xid, struct cifs_ses *ses, |
1da177e4 | 4739 | const unsigned char *searchName, |
c2cf07d5 SF |
4740 | struct dfs_info3_param **target_nodes, |
4741 | unsigned int *num_of_nodes, | |
737b758c | 4742 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4743 | { |
4744 | /* TRANS2_GET_DFS_REFERRAL */ | |
4745 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4746 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4747 | int rc = 0; |
4748 | int bytes_returned; | |
4749 | int name_len; | |
1da177e4 | 4750 | __u16 params, byte_count; |
c2cf07d5 SF |
4751 | *num_of_nodes = 0; |
4752 | *target_nodes = NULL; | |
1da177e4 | 4753 | |
b6b38f70 | 4754 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4755 | if (ses == NULL) |
4756 | return -ENODEV; | |
4757 | getDFSRetry: | |
4758 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4759 | (void **) &pSMBr); | |
4760 | if (rc) | |
4761 | return rc; | |
50c2f753 SF |
4762 | |
4763 | /* server pointer checked in called function, | |
1982c344 | 4764 | but should never be null here anyway */ |
88257360 | 4765 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4 LT |
4766 | pSMB->hdr.Tid = ses->ipc_tid; |
4767 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4768 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4769 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4770 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4771 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4772 | |
4773 | if (ses->capabilities & CAP_UNICODE) { | |
4774 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4775 | name_len = | |
acbbb76a SF |
4776 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
4777 | searchName, PATH_MAX, nls_codepage, | |
4778 | remap); | |
1da177e4 LT |
4779 | name_len++; /* trailing null */ |
4780 | name_len *= 2; | |
50c2f753 | 4781 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4782 | name_len = strnlen(searchName, PATH_MAX); |
4783 | name_len++; /* trailing null */ | |
4784 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4785 | } | |
4786 | ||
790fe579 | 4787 | if (ses->server) { |
96daf2b0 | 4788 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4789 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4790 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4791 | } | |
4792 | ||
50c2f753 | 4793 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4794 | |
1da177e4 LT |
4795 | params = 2 /* level */ + name_len /*includes null */ ; |
4796 | pSMB->TotalDataCount = 0; | |
4797 | pSMB->DataCount = 0; | |
4798 | pSMB->DataOffset = 0; | |
4799 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4800 | /* BB find exact max SMB PDU from sess structure BB */ |
4801 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4802 | pSMB->MaxSetupCount = 0; |
4803 | pSMB->Reserved = 0; | |
4804 | pSMB->Flags = 0; | |
4805 | pSMB->Timeout = 0; | |
4806 | pSMB->Reserved2 = 0; | |
4807 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4808 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4809 | pSMB->SetupCount = 1; |
4810 | pSMB->Reserved3 = 0; | |
4811 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4812 | byte_count = params + 3 /* pad */ ; | |
4813 | pSMB->ParameterCount = cpu_to_le16(params); | |
4814 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4815 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4816 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4817 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4818 | ||
4819 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4820 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4821 | if (rc) { | |
b6b38f70 | 4822 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4823 | goto GetDFSRefExit; |
4824 | } | |
4825 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4826 | |
c2cf07d5 | 4827 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4828 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4829 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4830 | goto GetDFSRefExit; |
4831 | } | |
c2cf07d5 | 4832 | |
b6b38f70 | 4833 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4834 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4835 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4836 | |
fec4585f | 4837 | /* parse returned result into more usable form */ |
a1fe78f1 | 4838 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4839 | target_nodes, nls_codepage, remap, |
4840 | searchName); | |
c2cf07d5 | 4841 | |
1da177e4 | 4842 | GetDFSRefExit: |
0d817bc0 | 4843 | cifs_buf_release(pSMB); |
1da177e4 LT |
4844 | |
4845 | if (rc == -EAGAIN) | |
4846 | goto getDFSRetry; | |
4847 | ||
4848 | return rc; | |
4849 | } | |
4850 | ||
20962438 SF |
4851 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4852 | int | |
96daf2b0 | 4853 | SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
20962438 SF |
4854 | { |
4855 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4856 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4857 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4858 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4859 | int rc = 0; | |
4860 | int bytes_returned = 0; | |
4861 | __u16 params, byte_count; | |
4862 | ||
b6b38f70 | 4863 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4864 | oldQFSInfoRetry: |
4865 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4866 | (void **) &pSMBr); | |
4867 | if (rc) | |
4868 | return rc; | |
20962438 SF |
4869 | |
4870 | params = 2; /* level */ | |
4871 | pSMB->TotalDataCount = 0; | |
4872 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4873 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4874 | pSMB->MaxSetupCount = 0; | |
4875 | pSMB->Reserved = 0; | |
4876 | pSMB->Flags = 0; | |
4877 | pSMB->Timeout = 0; | |
4878 | pSMB->Reserved2 = 0; | |
4879 | byte_count = params + 1 /* pad */ ; | |
4880 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4881 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4882 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4883 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4884 | pSMB->DataCount = 0; | |
4885 | pSMB->DataOffset = 0; | |
4886 | pSMB->SetupCount = 1; | |
4887 | pSMB->Reserved3 = 0; | |
4888 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4889 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4890 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4891 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4892 | ||
4893 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4894 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4895 | if (rc) { | |
b6b38f70 | 4896 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
4897 | } else { /* decode response */ |
4898 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4899 | ||
820a803f | 4900 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4901 | rc = -EIO; /* bad smb */ |
4902 | else { | |
4903 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 4904 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 4905 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4906 | |
50c2f753 | 4907 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4908 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4909 | FSData->f_bsize = | |
4910 | le16_to_cpu(response_data->BytesPerSector) * | |
4911 | le32_to_cpu(response_data-> | |
4912 | SectorsPerAllocationUnit); | |
4913 | FSData->f_blocks = | |
50c2f753 | 4914 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4915 | FSData->f_bfree = FSData->f_bavail = |
4916 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4917 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4918 | (unsigned long long)FSData->f_blocks, | |
4919 | (unsigned long long)FSData->f_bfree, | |
4920 | FSData->f_bsize); | |
20962438 SF |
4921 | } |
4922 | } | |
4923 | cifs_buf_release(pSMB); | |
4924 | ||
4925 | if (rc == -EAGAIN) | |
4926 | goto oldQFSInfoRetry; | |
4927 | ||
4928 | return rc; | |
4929 | } | |
4930 | ||
1da177e4 | 4931 | int |
96daf2b0 | 4932 | CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4933 | { |
4934 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4935 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4936 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4937 | FILE_SYSTEM_INFO *response_data; | |
4938 | int rc = 0; | |
4939 | int bytes_returned = 0; | |
4940 | __u16 params, byte_count; | |
4941 | ||
b6b38f70 | 4942 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
4943 | QFSInfoRetry: |
4944 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4945 | (void **) &pSMBr); | |
4946 | if (rc) | |
4947 | return rc; | |
4948 | ||
4949 | params = 2; /* level */ | |
4950 | pSMB->TotalDataCount = 0; | |
4951 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4952 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4953 | pSMB->MaxSetupCount = 0; |
4954 | pSMB->Reserved = 0; | |
4955 | pSMB->Flags = 0; | |
4956 | pSMB->Timeout = 0; | |
4957 | pSMB->Reserved2 = 0; | |
4958 | byte_count = params + 1 /* pad */ ; | |
4959 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4960 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4961 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4962 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4963 | pSMB->DataCount = 0; |
4964 | pSMB->DataOffset = 0; | |
4965 | pSMB->SetupCount = 1; | |
4966 | pSMB->Reserved3 = 0; | |
4967 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4968 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4969 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4970 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4971 | ||
4972 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4973 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4974 | if (rc) { | |
b6b38f70 | 4975 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 4976 | } else { /* decode response */ |
50c2f753 | 4977 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4978 | |
820a803f | 4979 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4980 | rc = -EIO; /* bad smb */ |
4981 | else { | |
4982 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4983 | |
4984 | response_data = | |
4985 | (FILE_SYSTEM_INFO | |
4986 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4987 | data_offset); | |
4988 | FSData->f_bsize = | |
4989 | le32_to_cpu(response_data->BytesPerSector) * | |
4990 | le32_to_cpu(response_data-> | |
4991 | SectorsPerAllocationUnit); | |
4992 | FSData->f_blocks = | |
4993 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4994 | FSData->f_bfree = FSData->f_bavail = | |
4995 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
4996 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
4997 | (unsigned long long)FSData->f_blocks, | |
4998 | (unsigned long long)FSData->f_bfree, | |
4999 | FSData->f_bsize); | |
1da177e4 LT |
5000 | } |
5001 | } | |
5002 | cifs_buf_release(pSMB); | |
5003 | ||
5004 | if (rc == -EAGAIN) | |
5005 | goto QFSInfoRetry; | |
5006 | ||
5007 | return rc; | |
5008 | } | |
5009 | ||
5010 | int | |
96daf2b0 | 5011 | CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5012 | { |
5013 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5014 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5015 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5016 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5017 | int rc = 0; | |
5018 | int bytes_returned = 0; | |
5019 | __u16 params, byte_count; | |
5020 | ||
b6b38f70 | 5021 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
5022 | QFSAttributeRetry: |
5023 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5024 | (void **) &pSMBr); | |
5025 | if (rc) | |
5026 | return rc; | |
5027 | ||
5028 | params = 2; /* level */ | |
5029 | pSMB->TotalDataCount = 0; | |
5030 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5031 | /* BB find exact max SMB PDU from sess structure BB */ |
5032 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5033 | pSMB->MaxSetupCount = 0; |
5034 | pSMB->Reserved = 0; | |
5035 | pSMB->Flags = 0; | |
5036 | pSMB->Timeout = 0; | |
5037 | pSMB->Reserved2 = 0; | |
5038 | byte_count = params + 1 /* pad */ ; | |
5039 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5040 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5041 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5042 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5043 | pSMB->DataCount = 0; |
5044 | pSMB->DataOffset = 0; | |
5045 | pSMB->SetupCount = 1; | |
5046 | pSMB->Reserved3 = 0; | |
5047 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5048 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5049 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5050 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5051 | ||
5052 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5053 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5054 | if (rc) { | |
b6b38f70 | 5055 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
5056 | } else { /* decode response */ |
5057 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5058 | ||
820a803f | 5059 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5060 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5061 | rc = -EIO; /* bad smb */ |
5062 | } else { | |
5063 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5064 | response_data = | |
5065 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5066 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5067 | data_offset); | |
5068 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5069 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5070 | } |
5071 | } | |
5072 | cifs_buf_release(pSMB); | |
5073 | ||
5074 | if (rc == -EAGAIN) | |
5075 | goto QFSAttributeRetry; | |
5076 | ||
5077 | return rc; | |
5078 | } | |
5079 | ||
5080 | int | |
96daf2b0 | 5081 | CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5082 | { |
5083 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5084 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5085 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5086 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5087 | int rc = 0; | |
5088 | int bytes_returned = 0; | |
5089 | __u16 params, byte_count; | |
5090 | ||
b6b38f70 | 5091 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
5092 | QFSDeviceRetry: |
5093 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5094 | (void **) &pSMBr); | |
5095 | if (rc) | |
5096 | return rc; | |
5097 | ||
5098 | params = 2; /* level */ | |
5099 | pSMB->TotalDataCount = 0; | |
5100 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5101 | /* BB find exact max SMB PDU from sess structure BB */ |
5102 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5103 | pSMB->MaxSetupCount = 0; |
5104 | pSMB->Reserved = 0; | |
5105 | pSMB->Flags = 0; | |
5106 | pSMB->Timeout = 0; | |
5107 | pSMB->Reserved2 = 0; | |
5108 | byte_count = params + 1 /* pad */ ; | |
5109 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5110 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5111 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5112 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5113 | |
5114 | pSMB->DataCount = 0; | |
5115 | pSMB->DataOffset = 0; | |
5116 | pSMB->SetupCount = 1; | |
5117 | pSMB->Reserved3 = 0; | |
5118 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5119 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5120 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5121 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5122 | ||
5123 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5124 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5125 | if (rc) { | |
b6b38f70 | 5126 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
5127 | } else { /* decode response */ |
5128 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5129 | ||
820a803f JL |
5130 | if (rc || get_bcc(&pSMBr->hdr) < |
5131 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5132 | rc = -EIO; /* bad smb */ |
5133 | else { | |
5134 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5135 | response_data = | |
737b758c SF |
5136 | (FILE_SYSTEM_DEVICE_INFO *) |
5137 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5138 | data_offset); |
5139 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5140 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5141 | } |
5142 | } | |
5143 | cifs_buf_release(pSMB); | |
5144 | ||
5145 | if (rc == -EAGAIN) | |
5146 | goto QFSDeviceRetry; | |
5147 | ||
5148 | return rc; | |
5149 | } | |
5150 | ||
5151 | int | |
96daf2b0 | 5152 | CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5153 | { |
5154 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5155 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5156 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5157 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5158 | int rc = 0; | |
5159 | int bytes_returned = 0; | |
5160 | __u16 params, byte_count; | |
5161 | ||
b6b38f70 | 5162 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 5163 | QFSUnixRetry: |
f569599a JL |
5164 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5165 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5166 | if (rc) |
5167 | return rc; | |
5168 | ||
5169 | params = 2; /* level */ | |
5170 | pSMB->TotalDataCount = 0; | |
5171 | pSMB->DataCount = 0; | |
5172 | pSMB->DataOffset = 0; | |
5173 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5174 | /* BB find exact max SMB PDU from sess structure BB */ |
5175 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5176 | pSMB->MaxSetupCount = 0; |
5177 | pSMB->Reserved = 0; | |
5178 | pSMB->Flags = 0; | |
5179 | pSMB->Timeout = 0; | |
5180 | pSMB->Reserved2 = 0; | |
5181 | byte_count = params + 1 /* pad */ ; | |
5182 | pSMB->ParameterCount = cpu_to_le16(params); | |
5183 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5184 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5185 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5186 | pSMB->SetupCount = 1; |
5187 | pSMB->Reserved3 = 0; | |
5188 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5189 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5190 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5191 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5192 | ||
5193 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5194 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5195 | if (rc) { | |
b6b38f70 | 5196 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5197 | } else { /* decode response */ |
5198 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5199 | ||
820a803f | 5200 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5201 | rc = -EIO; /* bad smb */ |
5202 | } else { | |
5203 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5204 | response_data = | |
5205 | (FILE_SYSTEM_UNIX_INFO | |
5206 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5207 | data_offset); | |
5208 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5209 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5210 | } |
5211 | } | |
5212 | cifs_buf_release(pSMB); | |
5213 | ||
5214 | if (rc == -EAGAIN) | |
5215 | goto QFSUnixRetry; | |
5216 | ||
5217 | ||
5218 | return rc; | |
5219 | } | |
5220 | ||
ac67055e | 5221 | int |
96daf2b0 | 5222 | CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5223 | { |
5224 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5225 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5226 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5227 | int rc = 0; | |
5228 | int bytes_returned = 0; | |
5229 | __u16 params, param_offset, offset, byte_count; | |
5230 | ||
b6b38f70 | 5231 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 5232 | SETFSUnixRetry: |
f26282c9 | 5233 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5234 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5235 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5236 | if (rc) |
5237 | return rc; | |
5238 | ||
5239 | params = 4; /* 2 bytes zero followed by info level. */ | |
5240 | pSMB->MaxSetupCount = 0; | |
5241 | pSMB->Reserved = 0; | |
5242 | pSMB->Flags = 0; | |
5243 | pSMB->Timeout = 0; | |
5244 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5245 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5246 | - 4; | |
ac67055e JA |
5247 | offset = param_offset + params; |
5248 | ||
5249 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5250 | /* BB find exact max SMB PDU from sess structure BB */ |
5251 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5252 | pSMB->SetupCount = 1; |
5253 | pSMB->Reserved3 = 0; | |
5254 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5255 | byte_count = 1 /* pad */ + params + 12; | |
5256 | ||
5257 | pSMB->DataCount = cpu_to_le16(12); | |
5258 | pSMB->ParameterCount = cpu_to_le16(params); | |
5259 | pSMB->TotalDataCount = pSMB->DataCount; | |
5260 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5261 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5262 | pSMB->DataOffset = cpu_to_le16(offset); | |
5263 | ||
5264 | /* Params. */ | |
5265 | pSMB->FileNum = 0; | |
5266 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5267 | ||
5268 | /* Data. */ | |
5269 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5270 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5271 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5272 | ||
be8e3b00 | 5273 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5274 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5275 | ||
5276 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5277 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5278 | if (rc) { | |
b6b38f70 | 5279 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
5280 | } else { /* decode response */ |
5281 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5282 | if (rc) |
ac67055e | 5283 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5284 | } |
5285 | cifs_buf_release(pSMB); | |
5286 | ||
5287 | if (rc == -EAGAIN) | |
5288 | goto SETFSUnixRetry; | |
5289 | ||
5290 | return rc; | |
5291 | } | |
5292 | ||
5293 | ||
1da177e4 LT |
5294 | |
5295 | int | |
96daf2b0 | 5296 | CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon, |
737b758c | 5297 | struct kstatfs *FSData) |
1da177e4 LT |
5298 | { |
5299 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5300 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5301 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5302 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5303 | int rc = 0; | |
5304 | int bytes_returned = 0; | |
5305 | __u16 params, byte_count; | |
5306 | ||
b6b38f70 | 5307 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5308 | QFSPosixRetry: |
5309 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5310 | (void **) &pSMBr); | |
5311 | if (rc) | |
5312 | return rc; | |
5313 | ||
5314 | params = 2; /* level */ | |
5315 | pSMB->TotalDataCount = 0; | |
5316 | pSMB->DataCount = 0; | |
5317 | pSMB->DataOffset = 0; | |
5318 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5319 | /* BB find exact max SMB PDU from sess structure BB */ |
5320 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5321 | pSMB->MaxSetupCount = 0; |
5322 | pSMB->Reserved = 0; | |
5323 | pSMB->Flags = 0; | |
5324 | pSMB->Timeout = 0; | |
5325 | pSMB->Reserved2 = 0; | |
5326 | byte_count = params + 1 /* pad */ ; | |
5327 | pSMB->ParameterCount = cpu_to_le16(params); | |
5328 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5329 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5330 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5331 | pSMB->SetupCount = 1; |
5332 | pSMB->Reserved3 = 0; | |
5333 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5334 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5335 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5336 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5337 | ||
5338 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5339 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5340 | if (rc) { | |
b6b38f70 | 5341 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5342 | } else { /* decode response */ |
5343 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5344 | ||
820a803f | 5345 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5346 | rc = -EIO; /* bad smb */ |
5347 | } else { | |
5348 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5349 | response_data = | |
5350 | (FILE_SYSTEM_POSIX_INFO | |
5351 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5352 | data_offset); | |
5353 | FSData->f_bsize = | |
5354 | le32_to_cpu(response_data->BlockSize); | |
5355 | FSData->f_blocks = | |
5356 | le64_to_cpu(response_data->TotalBlocks); | |
5357 | FSData->f_bfree = | |
5358 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5359 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5360 | FSData->f_bavail = FSData->f_bfree; |
5361 | } else { | |
5362 | FSData->f_bavail = | |
50c2f753 | 5363 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5364 | } |
790fe579 | 5365 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5366 | FSData->f_files = |
50c2f753 | 5367 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5368 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5369 | FSData->f_ffree = |
50c2f753 | 5370 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5371 | } |
5372 | } | |
5373 | cifs_buf_release(pSMB); | |
5374 | ||
5375 | if (rc == -EAGAIN) | |
5376 | goto QFSPosixRetry; | |
5377 | ||
5378 | return rc; | |
5379 | } | |
5380 | ||
5381 | ||
50c2f753 SF |
5382 | /* We can not use write of zero bytes trick to |
5383 | set file size due to need for large file support. Also note that | |
5384 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5385 | routine which is only needed to work around a sharing violation bug |
5386 | in Samba which this routine can run into */ | |
5387 | ||
5388 | int | |
96daf2b0 | 5389 | CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName, |
4b18f2a9 | 5390 | __u64 size, bool SetAllocation, |
737b758c | 5391 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5392 | { |
5393 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5394 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5395 | struct file_end_of_file_info *parm_data; | |
5396 | int name_len; | |
5397 | int rc = 0; | |
5398 | int bytes_returned = 0; | |
5399 | __u16 params, byte_count, data_count, param_offset, offset; | |
5400 | ||
b6b38f70 | 5401 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5402 | SetEOFRetry: |
5403 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5404 | (void **) &pSMBr); | |
5405 | if (rc) | |
5406 | return rc; | |
5407 | ||
5408 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5409 | name_len = | |
acbbb76a SF |
5410 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5411 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5412 | name_len++; /* trailing null */ |
5413 | name_len *= 2; | |
3e87d803 | 5414 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5415 | name_len = strnlen(fileName, PATH_MAX); |
5416 | name_len++; /* trailing null */ | |
5417 | strncpy(pSMB->FileName, fileName, name_len); | |
5418 | } | |
5419 | params = 6 + name_len; | |
26f57364 | 5420 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5421 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5422 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5423 | pSMB->MaxSetupCount = 0; |
5424 | pSMB->Reserved = 0; | |
5425 | pSMB->Flags = 0; | |
5426 | pSMB->Timeout = 0; | |
5427 | pSMB->Reserved2 = 0; | |
5428 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5429 | InformationLevel) - 4; |
1da177e4 | 5430 | offset = param_offset + params; |
790fe579 | 5431 | if (SetAllocation) { |
50c2f753 SF |
5432 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5433 | pSMB->InformationLevel = | |
5434 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5435 | else | |
5436 | pSMB->InformationLevel = | |
5437 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5438 | } else /* Set File Size */ { | |
1da177e4 LT |
5439 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5440 | pSMB->InformationLevel = | |
50c2f753 | 5441 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5442 | else |
5443 | pSMB->InformationLevel = | |
50c2f753 | 5444 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5445 | } |
5446 | ||
5447 | parm_data = | |
5448 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5449 | offset); | |
5450 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5451 | pSMB->DataOffset = cpu_to_le16(offset); | |
5452 | pSMB->SetupCount = 1; | |
5453 | pSMB->Reserved3 = 0; | |
5454 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5455 | byte_count = 3 /* pad */ + params + data_count; | |
5456 | pSMB->DataCount = cpu_to_le16(data_count); | |
5457 | pSMB->TotalDataCount = pSMB->DataCount; | |
5458 | pSMB->ParameterCount = cpu_to_le16(params); | |
5459 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5460 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5461 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5462 | parm_data->FileSize = cpu_to_le64(size); |
5463 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5464 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5465 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5466 | if (rc) |
b6b38f70 | 5467 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5468 | |
5469 | cifs_buf_release(pSMB); | |
5470 | ||
5471 | if (rc == -EAGAIN) | |
5472 | goto SetEOFRetry; | |
5473 | ||
5474 | return rc; | |
5475 | } | |
5476 | ||
5477 | int | |
96daf2b0 | 5478 | CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size, |
4b18f2a9 | 5479 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5480 | { |
5481 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5482 | struct file_end_of_file_info *parm_data; |
5483 | int rc = 0; | |
1da177e4 LT |
5484 | __u16 params, param_offset, offset, byte_count, count; |
5485 | ||
b6b38f70 JP |
5486 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5487 | (long long)size); | |
cd63499c SF |
5488 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5489 | ||
1da177e4 LT |
5490 | if (rc) |
5491 | return rc; | |
5492 | ||
5493 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5494 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5495 | |
1da177e4 LT |
5496 | params = 6; |
5497 | pSMB->MaxSetupCount = 0; | |
5498 | pSMB->Reserved = 0; | |
5499 | pSMB->Flags = 0; | |
5500 | pSMB->Timeout = 0; | |
5501 | pSMB->Reserved2 = 0; | |
5502 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5503 | offset = param_offset + params; | |
5504 | ||
1da177e4 LT |
5505 | count = sizeof(struct file_end_of_file_info); |
5506 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5507 | /* BB find exact max SMB PDU from sess structure BB */ |
5508 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5509 | pSMB->SetupCount = 1; |
5510 | pSMB->Reserved3 = 0; | |
5511 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5512 | byte_count = 3 /* pad */ + params + count; | |
5513 | pSMB->DataCount = cpu_to_le16(count); | |
5514 | pSMB->ParameterCount = cpu_to_le16(params); | |
5515 | pSMB->TotalDataCount = pSMB->DataCount; | |
5516 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5517 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5518 | parm_data = | |
50c2f753 SF |
5519 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5520 | + offset); | |
1da177e4 LT |
5521 | pSMB->DataOffset = cpu_to_le16(offset); |
5522 | parm_data->FileSize = cpu_to_le64(size); | |
5523 | pSMB->Fid = fid; | |
790fe579 | 5524 | if (SetAllocation) { |
1da177e4 LT |
5525 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5526 | pSMB->InformationLevel = | |
5527 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5528 | else | |
5529 | pSMB->InformationLevel = | |
5530 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5531 | } else /* Set File Size */ { |
1da177e4 LT |
5532 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5533 | pSMB->InformationLevel = | |
50c2f753 | 5534 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5535 | else |
5536 | pSMB->InformationLevel = | |
50c2f753 | 5537 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5538 | } |
5539 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5540 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5541 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5542 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5543 | if (rc) { |
b6b38f70 | 5544 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5545 | } |
5546 | ||
50c2f753 | 5547 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5548 | since file handle passed in no longer valid */ |
5549 | ||
5550 | return rc; | |
5551 | } | |
5552 | ||
50c2f753 | 5553 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5554 | an open handle, rather than by pathname - this is awkward due to |
5555 | potential access conflicts on the open, but it is unavoidable for these | |
5556 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5557 | time and resort to the original setpathinfo level which takes the ancient | |
5558 | DOS time format with 2 second granularity */ | |
5559 | int | |
96daf2b0 | 5560 | CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5561 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5562 | { |
5563 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5564 | char *data_offset; |
5565 | int rc = 0; | |
1da177e4 LT |
5566 | __u16 params, param_offset, offset, byte_count, count; |
5567 | ||
b6b38f70 | 5568 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5569 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5570 | ||
1da177e4 LT |
5571 | if (rc) |
5572 | return rc; | |
5573 | ||
2dd2dfa0 JL |
5574 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5575 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5576 | |
1da177e4 LT |
5577 | params = 6; |
5578 | pSMB->MaxSetupCount = 0; | |
5579 | pSMB->Reserved = 0; | |
5580 | pSMB->Flags = 0; | |
5581 | pSMB->Timeout = 0; | |
5582 | pSMB->Reserved2 = 0; | |
5583 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5584 | offset = param_offset + params; | |
5585 | ||
b2a3ad9c JL |
5586 | data_offset = (char *)pSMB + |
5587 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5588 | |
26f57364 | 5589 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5590 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5591 | /* BB find max SMB PDU from sess */ |
5592 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5593 | pSMB->SetupCount = 1; |
5594 | pSMB->Reserved3 = 0; | |
5595 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5596 | byte_count = 3 /* pad */ + params + count; | |
5597 | pSMB->DataCount = cpu_to_le16(count); | |
5598 | pSMB->ParameterCount = cpu_to_le16(params); | |
5599 | pSMB->TotalDataCount = pSMB->DataCount; | |
5600 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5601 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5602 | pSMB->DataOffset = cpu_to_le16(offset); | |
5603 | pSMB->Fid = fid; | |
5604 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5605 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5606 | else | |
5607 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5608 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5609 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5610 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5611 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5612 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5613 | if (rc) |
b6b38f70 | 5614 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5615 | |
50c2f753 | 5616 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5617 | since file handle passed in no longer valid */ |
5618 | ||
5619 | return rc; | |
5620 | } | |
5621 | ||
6d22f098 | 5622 | int |
96daf2b0 | 5623 | CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5624 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5625 | { | |
5626 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5627 | char *data_offset; | |
5628 | int rc = 0; | |
5629 | __u16 params, param_offset, offset, byte_count, count; | |
5630 | ||
b6b38f70 | 5631 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5632 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5633 | ||
5634 | if (rc) | |
5635 | return rc; | |
5636 | ||
5637 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5638 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5639 | ||
5640 | params = 6; | |
5641 | pSMB->MaxSetupCount = 0; | |
5642 | pSMB->Reserved = 0; | |
5643 | pSMB->Flags = 0; | |
5644 | pSMB->Timeout = 0; | |
5645 | pSMB->Reserved2 = 0; | |
5646 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5647 | offset = param_offset + params; | |
5648 | ||
5649 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5650 | ||
5651 | count = 1; | |
5652 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5653 | /* BB find max SMB PDU from sess */ | |
5654 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5655 | pSMB->SetupCount = 1; | |
5656 | pSMB->Reserved3 = 0; | |
5657 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5658 | byte_count = 3 /* pad */ + params + count; | |
5659 | pSMB->DataCount = cpu_to_le16(count); | |
5660 | pSMB->ParameterCount = cpu_to_le16(params); | |
5661 | pSMB->TotalDataCount = pSMB->DataCount; | |
5662 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5663 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5664 | pSMB->DataOffset = cpu_to_le16(offset); | |
5665 | pSMB->Fid = fid; | |
5666 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5667 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5668 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5669 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5670 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5671 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5672 | if (rc) |
b6b38f70 | 5673 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5674 | |
5675 | return rc; | |
5676 | } | |
1da177e4 LT |
5677 | |
5678 | int | |
96daf2b0 | 5679 | CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5680 | const char *fileName, const FILE_BASIC_INFO *data, |
5681 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5682 | { |
5683 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5684 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5685 | int name_len; | |
5686 | int rc = 0; | |
5687 | int bytes_returned = 0; | |
5688 | char *data_offset; | |
5689 | __u16 params, param_offset, offset, byte_count, count; | |
5690 | ||
b6b38f70 | 5691 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5692 | |
5693 | SetTimesRetry: | |
5694 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5695 | (void **) &pSMBr); | |
5696 | if (rc) | |
5697 | return rc; | |
5698 | ||
5699 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5700 | name_len = | |
acbbb76a SF |
5701 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5702 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5703 | name_len++; /* trailing null */ |
5704 | name_len *= 2; | |
50c2f753 | 5705 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5706 | name_len = strnlen(fileName, PATH_MAX); |
5707 | name_len++; /* trailing null */ | |
5708 | strncpy(pSMB->FileName, fileName, name_len); | |
5709 | } | |
5710 | ||
5711 | params = 6 + name_len; | |
26f57364 | 5712 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5713 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5714 | /* BB find max SMB PDU from sess structure BB */ |
5715 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5716 | pSMB->MaxSetupCount = 0; |
5717 | pSMB->Reserved = 0; | |
5718 | pSMB->Flags = 0; | |
5719 | pSMB->Timeout = 0; | |
5720 | pSMB->Reserved2 = 0; | |
5721 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5722 | InformationLevel) - 4; |
1da177e4 LT |
5723 | offset = param_offset + params; |
5724 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5725 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5726 | pSMB->DataOffset = cpu_to_le16(offset); | |
5727 | pSMB->SetupCount = 1; | |
5728 | pSMB->Reserved3 = 0; | |
5729 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5730 | byte_count = 3 /* pad */ + params + count; | |
5731 | ||
5732 | pSMB->DataCount = cpu_to_le16(count); | |
5733 | pSMB->ParameterCount = cpu_to_le16(params); | |
5734 | pSMB->TotalDataCount = pSMB->DataCount; | |
5735 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5736 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5737 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5738 | else | |
5739 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5740 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5741 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5742 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5743 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5744 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5745 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5746 | if (rc) |
b6b38f70 | 5747 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5748 | |
5749 | cifs_buf_release(pSMB); | |
5750 | ||
5751 | if (rc == -EAGAIN) | |
5752 | goto SetTimesRetry; | |
5753 | ||
5754 | return rc; | |
5755 | } | |
5756 | ||
5757 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5758 | /* Can be used to set attributes */ | |
5759 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5760 | handling it anyway and NT4 was what we thought it would be needed for | |
5761 | Do not delete it until we prove whether needed for Win9x though */ | |
5762 | int | |
96daf2b0 | 5763 | CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5764 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5765 | { | |
5766 | SETATTR_REQ *pSMB = NULL; | |
5767 | SETATTR_RSP *pSMBr = NULL; | |
5768 | int rc = 0; | |
5769 | int bytes_returned; | |
5770 | int name_len; | |
5771 | ||
b6b38f70 | 5772 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5773 | |
5774 | SetAttrLgcyRetry: | |
5775 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5776 | (void **) &pSMBr); | |
5777 | if (rc) | |
5778 | return rc; | |
5779 | ||
5780 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5781 | name_len = | |
acbbb76a SF |
5782 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5783 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5784 | name_len++; /* trailing null */ |
5785 | name_len *= 2; | |
50c2f753 | 5786 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5787 | name_len = strnlen(fileName, PATH_MAX); |
5788 | name_len++; /* trailing null */ | |
5789 | strncpy(pSMB->fileName, fileName, name_len); | |
5790 | } | |
5791 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5792 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5793 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5794 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5795 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5796 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5797 | if (rc) |
b6b38f70 | 5798 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5799 | |
5800 | cifs_buf_release(pSMB); | |
5801 | ||
5802 | if (rc == -EAGAIN) | |
5803 | goto SetAttrLgcyRetry; | |
5804 | ||
5805 | return rc; | |
5806 | } | |
5807 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5808 | ||
654cf14a JL |
5809 | static void |
5810 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5811 | const struct cifs_unix_set_info_args *args) | |
5812 | { | |
5813 | u64 mode = args->mode; | |
5814 | ||
5815 | /* | |
5816 | * Samba server ignores set of file size to zero due to bugs in some | |
5817 | * older clients, but we should be precise - we use SetFileSize to | |
5818 | * set file size and do not want to truncate file size to zero | |
25985edc | 5819 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5820 | * zero instead of -1 here |
5821 | */ | |
5822 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5823 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5824 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5825 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5826 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5827 | data_offset->Uid = cpu_to_le64(args->uid); | |
5828 | data_offset->Gid = cpu_to_le64(args->gid); | |
5829 | /* better to leave device as zero when it is */ | |
5830 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5831 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5832 | data_offset->Permissions = cpu_to_le64(mode); | |
5833 | ||
5834 | if (S_ISREG(mode)) | |
5835 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5836 | else if (S_ISDIR(mode)) | |
5837 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5838 | else if (S_ISLNK(mode)) | |
5839 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5840 | else if (S_ISCHR(mode)) | |
5841 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5842 | else if (S_ISBLK(mode)) | |
5843 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5844 | else if (S_ISFIFO(mode)) | |
5845 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5846 | else if (S_ISSOCK(mode)) | |
5847 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5848 | } | |
5849 | ||
3bbeeb3c | 5850 | int |
96daf2b0 | 5851 | CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5852 | const struct cifs_unix_set_info_args *args, |
5853 | u16 fid, u32 pid_of_opener) | |
5854 | { | |
5855 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5856 | char *data_offset; |
3bbeeb3c JL |
5857 | int rc = 0; |
5858 | u16 params, param_offset, offset, byte_count, count; | |
5859 | ||
b6b38f70 | 5860 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5861 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5862 | ||
5863 | if (rc) | |
5864 | return rc; | |
5865 | ||
5866 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5867 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5868 | ||
5869 | params = 6; | |
5870 | pSMB->MaxSetupCount = 0; | |
5871 | pSMB->Reserved = 0; | |
5872 | pSMB->Flags = 0; | |
5873 | pSMB->Timeout = 0; | |
5874 | pSMB->Reserved2 = 0; | |
5875 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5876 | offset = param_offset + params; | |
5877 | ||
b2a3ad9c JL |
5878 | data_offset = (char *)pSMB + |
5879 | offsetof(struct smb_hdr, Protocol) + offset; | |
5880 | ||
3bbeeb3c JL |
5881 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5882 | ||
5883 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5884 | /* BB find max SMB PDU from sess */ | |
5885 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5886 | pSMB->SetupCount = 1; | |
5887 | pSMB->Reserved3 = 0; | |
5888 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5889 | byte_count = 3 /* pad */ + params + count; | |
5890 | pSMB->DataCount = cpu_to_le16(count); | |
5891 | pSMB->ParameterCount = cpu_to_le16(params); | |
5892 | pSMB->TotalDataCount = pSMB->DataCount; | |
5893 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5894 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5895 | pSMB->DataOffset = cpu_to_le16(offset); | |
5896 | pSMB->Fid = fid; | |
5897 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5898 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5899 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5900 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5901 | ||
b2a3ad9c | 5902 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5903 | |
792af7b0 | 5904 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 5905 | if (rc) |
b6b38f70 | 5906 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
5907 | |
5908 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5909 | since file handle passed in no longer valid */ | |
5910 | ||
5911 | return rc; | |
5912 | } | |
5913 | ||
1da177e4 | 5914 | int |
96daf2b0 | 5915 | CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName, |
01ea95e3 JL |
5916 | const struct cifs_unix_set_info_args *args, |
5917 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5918 | { |
5919 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5920 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5921 | int name_len; | |
5922 | int rc = 0; | |
5923 | int bytes_returned = 0; | |
5924 | FILE_UNIX_BASIC_INFO *data_offset; | |
5925 | __u16 params, param_offset, offset, count, byte_count; | |
5926 | ||
b6b38f70 | 5927 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
5928 | setPermsRetry: |
5929 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5930 | (void **) &pSMBr); | |
5931 | if (rc) | |
5932 | return rc; | |
5933 | ||
5934 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5935 | name_len = | |
acbbb76a SF |
5936 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5937 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5938 | name_len++; /* trailing null */ |
5939 | name_len *= 2; | |
3e87d803 | 5940 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5941 | name_len = strnlen(fileName, PATH_MAX); |
5942 | name_len++; /* trailing null */ | |
5943 | strncpy(pSMB->FileName, fileName, name_len); | |
5944 | } | |
5945 | ||
5946 | params = 6 + name_len; | |
26f57364 | 5947 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5948 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5949 | /* BB find max SMB PDU from sess structure BB */ |
5950 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5951 | pSMB->MaxSetupCount = 0; |
5952 | pSMB->Reserved = 0; | |
5953 | pSMB->Flags = 0; | |
5954 | pSMB->Timeout = 0; | |
5955 | pSMB->Reserved2 = 0; | |
5956 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5957 | InformationLevel) - 4; |
1da177e4 LT |
5958 | offset = param_offset + params; |
5959 | data_offset = | |
5960 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5961 | offset); | |
5962 | memset(data_offset, 0, count); | |
5963 | pSMB->DataOffset = cpu_to_le16(offset); | |
5964 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5965 | pSMB->SetupCount = 1; | |
5966 | pSMB->Reserved3 = 0; | |
5967 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5968 | byte_count = 3 /* pad */ + params + count; | |
5969 | pSMB->ParameterCount = cpu_to_le16(params); | |
5970 | pSMB->DataCount = cpu_to_le16(count); | |
5971 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5972 | pSMB->TotalDataCount = pSMB->DataCount; | |
5973 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5974 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5975 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5976 | |
654cf14a | 5977 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5978 | |
5979 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5980 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5981 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5982 | if (rc) |
b6b38f70 | 5983 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 5984 | |
0d817bc0 | 5985 | cifs_buf_release(pSMB); |
1da177e4 LT |
5986 | if (rc == -EAGAIN) |
5987 | goto setPermsRetry; | |
5988 | return rc; | |
5989 | } | |
5990 | ||
1da177e4 | 5991 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5992 | /* |
5993 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5994 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5995 | * it looks for that attribute name and stuffs that value into the EAData | |
5996 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5997 | * buffer. In both cases, the return value is either the length of the | |
5998 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5999 | * the data isn't copied to it, but the length is returned. | |
6000 | */ | |
1da177e4 | 6001 | ssize_t |
96daf2b0 | 6002 | CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6003 | const unsigned char *searchName, const unsigned char *ea_name, |
6004 | char *EAData, size_t buf_size, | |
6005 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6006 | { |
6007 | /* BB assumes one setup word */ | |
6008 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6009 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6010 | int rc = 0; | |
6011 | int bytes_returned; | |
6e462b9f | 6012 | int list_len; |
f0d3868b | 6013 | struct fealist *ea_response_data; |
50c2f753 SF |
6014 | struct fea *temp_fea; |
6015 | char *temp_ptr; | |
0cd126b5 | 6016 | char *end_of_smb; |
f0d3868b | 6017 | __u16 params, byte_count, data_offset; |
5980fc96 | 6018 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6019 | |
b6b38f70 | 6020 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
6021 | QAllEAsRetry: |
6022 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6023 | (void **) &pSMBr); | |
6024 | if (rc) | |
6025 | return rc; | |
6026 | ||
6027 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6028 | list_len = |
acbbb76a SF |
6029 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6030 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6031 | list_len++; /* trailing null */ |
6032 | list_len *= 2; | |
1da177e4 | 6033 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6034 | list_len = strnlen(searchName, PATH_MAX); |
6035 | list_len++; /* trailing null */ | |
6036 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6037 | } |
6038 | ||
6e462b9f | 6039 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6040 | pSMB->TotalDataCount = 0; |
6041 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6042 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6043 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6044 | pSMB->MaxSetupCount = 0; |
6045 | pSMB->Reserved = 0; | |
6046 | pSMB->Flags = 0; | |
6047 | pSMB->Timeout = 0; | |
6048 | pSMB->Reserved2 = 0; | |
6049 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6050 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6051 | pSMB->DataCount = 0; |
6052 | pSMB->DataOffset = 0; | |
6053 | pSMB->SetupCount = 1; | |
6054 | pSMB->Reserved3 = 0; | |
6055 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6056 | byte_count = params + 1 /* pad */ ; | |
6057 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6058 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6059 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6060 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6061 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6062 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6063 | ||
6064 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6065 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6066 | if (rc) { | |
b6b38f70 | 6067 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
6068 | goto QAllEAsOut; |
6069 | } | |
1da177e4 | 6070 | |
f0d3868b JL |
6071 | |
6072 | /* BB also check enough total bytes returned */ | |
6073 | /* BB we need to improve the validity checking | |
6074 | of these trans2 responses */ | |
6075 | ||
6076 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6077 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6078 | rc = -EIO; /* bad smb */ |
6079 | goto QAllEAsOut; | |
6080 | } | |
6081 | ||
6082 | /* check that length of list is not more than bcc */ | |
6083 | /* check that each entry does not go beyond length | |
6084 | of list */ | |
6085 | /* check that each element of each entry does not | |
6086 | go beyond end of list */ | |
6087 | /* validate_trans2_offsets() */ | |
6088 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6089 | ||
6090 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6091 | ea_response_data = (struct fealist *) | |
6092 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6093 | ||
6e462b9f | 6094 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 6095 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 6096 | if (list_len <= 8) { |
b6b38f70 | 6097 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
6098 | goto QAllEAsOut; |
6099 | } | |
6100 | ||
0cd126b5 | 6101 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6102 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6103 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 6104 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
6105 | rc = -EIO; |
6106 | goto QAllEAsOut; | |
6107 | } | |
6108 | ||
f0d3868b | 6109 | /* account for ea list len */ |
6e462b9f | 6110 | list_len -= 4; |
f0d3868b JL |
6111 | temp_fea = ea_response_data->list; |
6112 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6113 | while (list_len > 0) { |
122ca007 | 6114 | unsigned int name_len; |
f0d3868b | 6115 | __u16 value_len; |
0cd126b5 | 6116 | |
6e462b9f | 6117 | list_len -= 4; |
f0d3868b | 6118 | temp_ptr += 4; |
0cd126b5 JL |
6119 | /* make sure we can read name_len and value_len */ |
6120 | if (list_len < 0) { | |
b6b38f70 | 6121 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6122 | rc = -EIO; |
6123 | goto QAllEAsOut; | |
6124 | } | |
6125 | ||
6126 | name_len = temp_fea->name_len; | |
6127 | value_len = le16_to_cpu(temp_fea->value_len); | |
6128 | list_len -= name_len + 1 + value_len; | |
6129 | if (list_len < 0) { | |
b6b38f70 | 6130 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6131 | rc = -EIO; |
6132 | goto QAllEAsOut; | |
6133 | } | |
6134 | ||
31c0519f | 6135 | if (ea_name) { |
91d065c4 | 6136 | if (ea_name_len == name_len && |
ac423446 | 6137 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6138 | temp_ptr += name_len + 1; |
6139 | rc = value_len; | |
6140 | if (buf_size == 0) | |
6141 | goto QAllEAsOut; | |
6142 | if ((size_t)value_len > buf_size) { | |
6143 | rc = -ERANGE; | |
6144 | goto QAllEAsOut; | |
6145 | } | |
6146 | memcpy(EAData, temp_ptr, value_len); | |
6147 | goto QAllEAsOut; | |
6148 | } | |
f0d3868b | 6149 | } else { |
31c0519f JL |
6150 | /* account for prefix user. and trailing null */ |
6151 | rc += (5 + 1 + name_len); | |
6152 | if (rc < (int) buf_size) { | |
6153 | memcpy(EAData, "user.", 5); | |
6154 | EAData += 5; | |
6155 | memcpy(EAData, temp_ptr, name_len); | |
6156 | EAData += name_len; | |
6157 | /* null terminate name */ | |
6158 | *EAData = 0; | |
6159 | ++EAData; | |
6160 | } else if (buf_size == 0) { | |
6161 | /* skip copy - calc size only */ | |
6162 | } else { | |
6163 | /* stop before overrun buffer */ | |
6164 | rc = -ERANGE; | |
6165 | break; | |
6166 | } | |
1da177e4 | 6167 | } |
0cd126b5 | 6168 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6169 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6170 | } |
f0d3868b | 6171 | |
31c0519f JL |
6172 | /* didn't find the named attribute */ |
6173 | if (ea_name) | |
6174 | rc = -ENODATA; | |
6175 | ||
f0d3868b | 6176 | QAllEAsOut: |
0d817bc0 | 6177 | cifs_buf_release(pSMB); |
1da177e4 LT |
6178 | if (rc == -EAGAIN) |
6179 | goto QAllEAsRetry; | |
6180 | ||
6181 | return (ssize_t)rc; | |
6182 | } | |
6183 | ||
1da177e4 | 6184 | int |
96daf2b0 | 6185 | CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName, |
50c2f753 SF |
6186 | const char *ea_name, const void *ea_value, |
6187 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
6188 | int remap) | |
1da177e4 LT |
6189 | { |
6190 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6191 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6192 | struct fealist *parm_data; | |
6193 | int name_len; | |
6194 | int rc = 0; | |
6195 | int bytes_returned = 0; | |
6196 | __u16 params, param_offset, byte_count, offset, count; | |
6197 | ||
b6b38f70 | 6198 | cFYI(1, "In SetEA"); |
1da177e4 LT |
6199 | SetEARetry: |
6200 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6201 | (void **) &pSMBr); | |
6202 | if (rc) | |
6203 | return rc; | |
6204 | ||
6205 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6206 | name_len = | |
acbbb76a SF |
6207 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6208 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6209 | name_len++; /* trailing null */ |
6210 | name_len *= 2; | |
50c2f753 | 6211 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6212 | name_len = strnlen(fileName, PATH_MAX); |
6213 | name_len++; /* trailing null */ | |
6214 | strncpy(pSMB->FileName, fileName, name_len); | |
6215 | } | |
6216 | ||
6217 | params = 6 + name_len; | |
6218 | ||
6219 | /* done calculating parms using name_len of file name, | |
6220 | now use name_len to calculate length of ea name | |
6221 | we are going to create in the inode xattrs */ | |
790fe579 | 6222 | if (ea_name == NULL) |
1da177e4 LT |
6223 | name_len = 0; |
6224 | else | |
50c2f753 | 6225 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6226 | |
dae5dbdb | 6227 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6228 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6229 | /* BB find max SMB PDU from sess */ |
6230 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6231 | pSMB->MaxSetupCount = 0; |
6232 | pSMB->Reserved = 0; | |
6233 | pSMB->Flags = 0; | |
6234 | pSMB->Timeout = 0; | |
6235 | pSMB->Reserved2 = 0; | |
6236 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6237 | InformationLevel) - 4; |
1da177e4 LT |
6238 | offset = param_offset + params; |
6239 | pSMB->InformationLevel = | |
6240 | cpu_to_le16(SMB_SET_FILE_EA); | |
6241 | ||
6242 | parm_data = | |
6243 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6244 | offset); | |
6245 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6246 | pSMB->DataOffset = cpu_to_le16(offset); | |
6247 | pSMB->SetupCount = 1; | |
6248 | pSMB->Reserved3 = 0; | |
6249 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6250 | byte_count = 3 /* pad */ + params + count; | |
6251 | pSMB->DataCount = cpu_to_le16(count); | |
6252 | parm_data->list_len = cpu_to_le32(count); | |
6253 | parm_data->list[0].EA_flags = 0; | |
6254 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6255 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6256 | /* EA names are always ASCII */ |
790fe579 | 6257 | if (ea_name) |
50c2f753 | 6258 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6259 | parm_data->list[0].name[name_len] = 0; |
6260 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6261 | /* caller ensures that ea_value_len is less than 64K but | |
6262 | we need to ensure that it fits within the smb */ | |
6263 | ||
50c2f753 SF |
6264 | /*BB add length check to see if it would fit in |
6265 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6266 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6267 | if (ea_value_len) | |
50c2f753 SF |
6268 | memcpy(parm_data->list[0].name+name_len+1, |
6269 | ea_value, ea_value_len); | |
1da177e4 LT |
6270 | |
6271 | pSMB->TotalDataCount = pSMB->DataCount; | |
6272 | pSMB->ParameterCount = cpu_to_le16(params); | |
6273 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6274 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6275 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6276 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6277 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6278 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6279 | if (rc) |
b6b38f70 | 6280 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
6281 | |
6282 | cifs_buf_release(pSMB); | |
6283 | ||
6284 | if (rc == -EAGAIN) | |
6285 | goto SetEARetry; | |
6286 | ||
6287 | return rc; | |
6288 | } | |
1da177e4 | 6289 | #endif |
0eff0e26 SF |
6290 | |
6291 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6292 | /* | |
6293 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6294 | * to allow network clients (such as Windows) to display updated | |
6295 | * lists of files in directory listings automatically when | |
6296 | * files are added by one user when another user has the | |
6297 | * same directory open on their desktop. The Linux cifs kernel | |
6298 | * client hooked into the kernel side of this interface for | |
6299 | * the same reason, but ironically when the VFS moved from | |
6300 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6301 | * network file system clients (the most obvious use case | |
6302 | * for notify interfaces is when multiple users can update | |
6303 | * the contents of the same directory - exactly what network | |
6304 | * file systems can do) although the server (Samba) could | |
6305 | * still use it. For the short term we leave the worker | |
6306 | * function ifdeffed out (below) until inotify is fixed | |
6307 | * in the VFS to make it easier to plug in network file | |
6308 | * system clients. If inotify turns out to be permanently | |
6309 | * incompatible for network fs clients, we could instead simply | |
6310 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6311 | */ | |
96daf2b0 | 6312 | int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6313 | const int notify_subdirs, const __u16 netfid, |
6314 | __u32 filter, struct file *pfile, int multishot, | |
6315 | const struct nls_table *nls_codepage) | |
6316 | { | |
6317 | int rc = 0; | |
6318 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6319 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6320 | struct dir_notify_req *dnotify_req; | |
6321 | int bytes_returned; | |
6322 | ||
6323 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6324 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6325 | (void **) &pSMBr); | |
6326 | if (rc) | |
6327 | return rc; | |
6328 | ||
6329 | pSMB->TotalParameterCount = 0 ; | |
6330 | pSMB->TotalDataCount = 0; | |
6331 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6332 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6333 | pSMB->MaxSetupCount = 4; |
6334 | pSMB->Reserved = 0; | |
6335 | pSMB->ParameterOffset = 0; | |
6336 | pSMB->DataCount = 0; | |
6337 | pSMB->DataOffset = 0; | |
6338 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6339 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6340 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6341 | if (notify_subdirs) | |
6342 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6343 | pSMB->Reserved2 = 0; | |
6344 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6345 | pSMB->Fid = netfid; /* file handle always le */ | |
6346 | pSMB->ByteCount = 0; | |
6347 | ||
6348 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6349 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6350 | CIFS_ASYNC_OP); | |
6351 | if (rc) { | |
6352 | cFYI(1, "Error in Notify = %d", rc); | |
6353 | } else { | |
6354 | /* Add file to outstanding requests */ | |
6355 | /* BB change to kmem cache alloc */ | |
6356 | dnotify_req = kmalloc( | |
6357 | sizeof(struct dir_notify_req), | |
6358 | GFP_KERNEL); | |
6359 | if (dnotify_req) { | |
6360 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6361 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6362 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6363 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6364 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6365 | dnotify_req->netfid = netfid; | |
6366 | dnotify_req->pfile = pfile; | |
6367 | dnotify_req->filter = filter; | |
6368 | dnotify_req->multishot = multishot; | |
6369 | spin_lock(&GlobalMid_Lock); | |
6370 | list_add_tail(&dnotify_req->lhead, | |
6371 | &GlobalDnotifyReqList); | |
6372 | spin_unlock(&GlobalMid_Lock); | |
6373 | } else | |
6374 | rc = -ENOMEM; | |
6375 | } | |
6376 | cifs_buf_release(pSMB); | |
6377 | return rc; | |
6378 | } | |
6379 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |