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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
ad7a2926 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
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> | |
33 | #include <linux/posix_acl_xattr.h> | |
34 | #include <asm/uaccess.h> | |
35 | #include "cifspdu.h" | |
36 | #include "cifsglob.h" | |
d0d66c44 | 37 | #include "cifsacl.h" |
1da177e4 LT |
38 | #include "cifsproto.h" |
39 | #include "cifs_unicode.h" | |
40 | #include "cifs_debug.h" | |
41 | ||
42 | #ifdef CONFIG_CIFS_POSIX | |
43 | static struct { | |
44 | int index; | |
45 | char *name; | |
46 | } protocols[] = { | |
3979877e SF |
47 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
48 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 49 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 50 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 51 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 52 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
53 | {BAD_PROT, "\2"} |
54 | }; | |
55 | #else | |
56 | static struct { | |
57 | int index; | |
58 | char *name; | |
59 | } protocols[] = { | |
3979877e SF |
60 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
61 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 62 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 63 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 64 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
65 | {BAD_PROT, "\2"} |
66 | }; | |
67 | #endif | |
68 | ||
3979877e SF |
69 | /* define the number of elements in the cifs dialect array */ |
70 | #ifdef CONFIG_CIFS_POSIX | |
71 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 72 | #define CIFS_NUM_PROT 4 |
3979877e SF |
73 | #else |
74 | #define CIFS_NUM_PROT 2 | |
75 | #endif /* CIFS_WEAK_PW_HASH */ | |
76 | #else /* not posix */ | |
77 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 78 | #define CIFS_NUM_PROT 3 |
3979877e SF |
79 | #else |
80 | #define CIFS_NUM_PROT 1 | |
81 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
82 | #endif /* CIFS_POSIX */ | |
83 | ||
fec4585f IM |
84 | /* Allocates buffer into dst and copies smb string from src to it. |
85 | * caller is responsible for freeing dst if function returned 0. | |
86 | * returns: | |
87 | * on success - 0 | |
88 | * on failure - errno | |
89 | */ | |
90 | static int | |
91 | cifs_strncpy_to_host(char **dst, const char *src, const int maxlen, | |
92 | const bool is_unicode, const struct nls_table *nls_codepage) | |
93 | { | |
94 | int plen; | |
95 | ||
96 | if (is_unicode) { | |
97 | plen = UniStrnlen((wchar_t *)src, maxlen); | |
98 | *dst = kmalloc(plen + 2, GFP_KERNEL); | |
99 | if (!*dst) | |
100 | goto cifs_strncpy_to_host_ErrExit; | |
101 | cifs_strfromUCS_le(*dst, (__le16 *)src, plen, nls_codepage); | |
102 | } else { | |
103 | plen = strnlen(src, maxlen); | |
104 | *dst = kmalloc(plen + 2, GFP_KERNEL); | |
105 | if (!*dst) | |
106 | goto cifs_strncpy_to_host_ErrExit; | |
107 | strncpy(*dst, src, plen); | |
108 | } | |
109 | (*dst)[plen] = 0; | |
a1fe78f1 | 110 | (*dst)[plen+1] = 0; /* harmless for ASCII case, needed for Unicode */ |
fec4585f IM |
111 | return 0; |
112 | ||
113 | cifs_strncpy_to_host_ErrExit: | |
114 | cERROR(1, ("Failed to allocate buffer for string\n")); | |
115 | return -ENOMEM; | |
116 | } | |
117 | ||
1da177e4 LT |
118 | |
119 | /* Mark as invalid, all open files on tree connections since they | |
120 | were closed when session to server was lost */ | |
790fe579 | 121 | static void mark_open_files_invalid(struct cifsTconInfo *pTcon) |
1da177e4 LT |
122 | { |
123 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
124 | struct list_head *tmp; |
125 | struct list_head *tmp1; | |
1da177e4 LT |
126 | |
127 | /* list all files open on tree connection and mark them invalid */ | |
128 | write_lock(&GlobalSMBSeslock); | |
129 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { | |
790fe579 | 130 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 131 | open_file->invalidHandle = true; |
1da177e4 LT |
132 | } |
133 | write_unlock(&GlobalSMBSeslock); | |
09d1db5c SF |
134 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
135 | to this tcon */ | |
1da177e4 LT |
136 | } |
137 | ||
ad7a2926 SF |
138 | /* Allocate and return pointer to an SMB request buffer, and set basic |
139 | SMB information in the SMB header. If the return code is zero, this | |
140 | function must have filled in request_buf pointer */ | |
1da177e4 LT |
141 | static int |
142 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
ad7a2926 | 143 | void **request_buf) |
1da177e4 LT |
144 | { |
145 | int rc = 0; | |
146 | ||
147 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
148 | check for tcp and smb session status done differently | |
149 | for those three - in the calling routine */ | |
790fe579 SF |
150 | if (tcon) { |
151 | if (tcon->tidStatus == CifsExiting) { | |
6ab16d24 SF |
152 | /* only tree disconnect, open, and write, |
153 | (and ulogoff which does not have tcon) | |
154 | are allowed as we start force umount */ | |
790fe579 | 155 | if ((smb_command != SMB_COM_WRITE_ANDX) && |
50c2f753 | 156 | (smb_command != SMB_COM_OPEN_ANDX) && |
6ab16d24 | 157 | (smb_command != SMB_COM_TREE_DISCONNECT)) { |
790fe579 | 158 | cFYI(1, ("can not send cmd %d while umounting", |
6ab16d24 SF |
159 | smb_command)); |
160 | return -ENODEV; | |
161 | } | |
162 | } | |
790fe579 | 163 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && |
50c2f753 | 164 | (tcon->ses->server)) { |
1da177e4 | 165 | struct nls_table *nls_codepage; |
50c2f753 | 166 | /* Give Demultiplex thread up to 10 seconds to |
09d1db5c SF |
167 | reconnect, should be greater than cifs socket |
168 | timeout which is 7 seconds */ | |
c18c842b | 169 | while (tcon->ses->server->tcpStatus == |
63135e08 | 170 | CifsNeedReconnect) { |
1da177e4 | 171 | wait_event_interruptible_timeout(tcon->ses->server->response_q, |
c18c842b | 172 | (tcon->ses->server->tcpStatus == |
63135e08 SF |
173 | CifsGood), 10 * HZ); |
174 | if (tcon->ses->server->tcpStatus == | |
175 | CifsNeedReconnect) { | |
1da177e4 | 176 | /* on "soft" mounts we wait once */ |
4b18f2a9 | 177 | if (!tcon->retry || |
1da177e4 | 178 | (tcon->ses->status == CifsExiting)) { |
50c2f753 SF |
179 | cFYI(1, ("gave up waiting on " |
180 | "reconnect in smb_init")); | |
1da177e4 | 181 | return -EHOSTDOWN; |
09d1db5c SF |
182 | } /* else "hard" mount - keep retrying |
183 | until process is killed or server | |
184 | comes back on-line */ | |
1da177e4 LT |
185 | } else /* TCP session is reestablished now */ |
186 | break; | |
1da177e4 | 187 | } |
50c2f753 | 188 | |
1da177e4 LT |
189 | nls_codepage = load_nls_default(); |
190 | /* need to prevent multiple threads trying to | |
191 | simultaneously reconnect the same SMB session */ | |
192 | down(&tcon->ses->sesSem); | |
3b795210 | 193 | if (tcon->ses->need_reconnect) |
50c2f753 | 194 | rc = cifs_setup_session(0, tcon->ses, |
09d1db5c | 195 | nls_codepage); |
3b795210 | 196 | if (!rc && (tcon->need_reconnect)) { |
1da177e4 | 197 | mark_open_files_invalid(tcon); |
50c2f753 | 198 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
8af18971 | 199 | tcon, nls_codepage); |
1da177e4 | 200 | up(&tcon->ses->sesSem); |
3e84469d SF |
201 | /* BB FIXME add code to check if wsize needs |
202 | update due to negotiated smb buffer size | |
203 | shrinking */ | |
35028d71 | 204 | if (rc == 0) { |
1da177e4 | 205 | atomic_inc(&tconInfoReconnectCount); |
35028d71 SF |
206 | /* tell server Unix caps we support */ |
207 | if (tcon->ses->capabilities & CAP_UNIX) | |
208 | reset_cifs_unix_caps( | |
209 | 0 /* no xid */, | |
210 | tcon, | |
211 | NULL /* we do not know sb */, | |
212 | NULL /* no vol info */); | |
213 | } | |
1da177e4 LT |
214 | |
215 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
50c2f753 SF |
216 | /* Removed call to reopen open files here. |
217 | It is safer (and faster) to reopen files | |
09d1db5c | 218 | one at a time as needed in read and write */ |
1da177e4 | 219 | |
50c2f753 | 220 | /* Check if handle based operation so we |
09d1db5c SF |
221 | know whether we can continue or not without |
222 | returning to caller to reset file handle */ | |
50c2f753 | 223 | switch (smb_command) { |
1da177e4 LT |
224 | case SMB_COM_READ_ANDX: |
225 | case SMB_COM_WRITE_ANDX: | |
226 | case SMB_COM_CLOSE: | |
227 | case SMB_COM_FIND_CLOSE2: | |
228 | case SMB_COM_LOCKING_ANDX: { | |
229 | unload_nls(nls_codepage); | |
230 | return -EAGAIN; | |
231 | } | |
232 | } | |
233 | } else { | |
234 | up(&tcon->ses->sesSem); | |
235 | } | |
236 | unload_nls(nls_codepage); | |
237 | ||
238 | } else { | |
239 | return -EIO; | |
240 | } | |
241 | } | |
790fe579 | 242 | if (rc) |
1da177e4 LT |
243 | return rc; |
244 | ||
245 | *request_buf = cifs_small_buf_get(); | |
246 | if (*request_buf == NULL) { | |
247 | /* BB should we add a retry in here if not a writepage? */ | |
248 | return -ENOMEM; | |
249 | } | |
250 | ||
63135e08 | 251 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 252 | tcon, wct); |
1da177e4 | 253 | |
790fe579 SF |
254 | if (tcon != NULL) |
255 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 256 | |
1da177e4 | 257 | return rc; |
5815449d SF |
258 | } |
259 | ||
12b3b8ff | 260 | int |
50c2f753 | 261 | small_smb_init_no_tc(const int smb_command, const int wct, |
5815449d | 262 | struct cifsSesInfo *ses, void **request_buf) |
12b3b8ff SF |
263 | { |
264 | int rc; | |
50c2f753 | 265 | struct smb_hdr *buffer; |
12b3b8ff | 266 | |
5815449d | 267 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 268 | if (rc) |
12b3b8ff SF |
269 | return rc; |
270 | ||
04fdabe1 | 271 | buffer = (struct smb_hdr *)*request_buf; |
12b3b8ff SF |
272 | buffer->Mid = GetNextMid(ses->server); |
273 | if (ses->capabilities & CAP_UNICODE) | |
274 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 275 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
276 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
277 | ||
278 | /* uid, tid can stay at zero as set in header assemble */ | |
279 | ||
50c2f753 | 280 | /* BB add support for turning on the signing when |
12b3b8ff SF |
281 | this function is used after 1st of session setup requests */ |
282 | ||
283 | return rc; | |
284 | } | |
1da177e4 LT |
285 | |
286 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
287 | static int | |
288 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
289 | void **request_buf /* returned */ , | |
290 | void **response_buf /* returned */ ) | |
291 | { | |
292 | int rc = 0; | |
293 | ||
294 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
295 | check for tcp and smb session status done differently | |
296 | for those three - in the calling routine */ | |
790fe579 | 297 | if (tcon) { |
3b795210 | 298 | if (tcon->need_reconnect) { |
6ab16d24 SF |
299 | /* only tree disconnect, open, and write, |
300 | (and ulogoff which does not have tcon) | |
301 | are allowed as we start force umount */ | |
790fe579 | 302 | if ((smb_command != SMB_COM_WRITE_ANDX) && |
6ab16d24 SF |
303 | (smb_command != SMB_COM_OPEN_ANDX) && |
304 | (smb_command != SMB_COM_TREE_DISCONNECT)) { | |
790fe579 | 305 | cFYI(1, ("can not send cmd %d while umounting", |
6ab16d24 SF |
306 | smb_command)); |
307 | return -ENODEV; | |
308 | } | |
309 | } | |
310 | ||
790fe579 | 311 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && |
50c2f753 | 312 | (tcon->ses->server)) { |
1da177e4 | 313 | struct nls_table *nls_codepage; |
09d1db5c SF |
314 | /* Give Demultiplex thread up to 10 seconds to |
315 | reconnect, should be greater than cifs socket | |
316 | timeout which is 7 seconds */ | |
63135e08 SF |
317 | while (tcon->ses->server->tcpStatus == |
318 | CifsNeedReconnect) { | |
1da177e4 | 319 | wait_event_interruptible_timeout(tcon->ses->server->response_q, |
63135e08 SF |
320 | (tcon->ses->server->tcpStatus == |
321 | CifsGood), 10 * HZ); | |
790fe579 | 322 | if (tcon->ses->server->tcpStatus == |
09d1db5c | 323 | CifsNeedReconnect) { |
1da177e4 | 324 | /* on "soft" mounts we wait once */ |
4b18f2a9 | 325 | if (!tcon->retry || |
1da177e4 | 326 | (tcon->ses->status == CifsExiting)) { |
50c2f753 SF |
327 | cFYI(1, ("gave up waiting on " |
328 | "reconnect in smb_init")); | |
1da177e4 | 329 | return -EHOSTDOWN; |
09d1db5c SF |
330 | } /* else "hard" mount - keep retrying |
331 | until process is killed or server | |
332 | comes on-line */ | |
1da177e4 LT |
333 | } else /* TCP session is reestablished now */ |
334 | break; | |
1da177e4 | 335 | } |
1da177e4 LT |
336 | nls_codepage = load_nls_default(); |
337 | /* need to prevent multiple threads trying to | |
338 | simultaneously reconnect the same SMB session */ | |
339 | down(&tcon->ses->sesSem); | |
3b795210 | 340 | if (tcon->ses->need_reconnect) |
50c2f753 | 341 | rc = cifs_setup_session(0, tcon->ses, |
09d1db5c | 342 | nls_codepage); |
3b795210 | 343 | if (!rc && (tcon->need_reconnect)) { |
1da177e4 | 344 | mark_open_files_invalid(tcon); |
09d1db5c SF |
345 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, |
346 | tcon, nls_codepage); | |
1da177e4 | 347 | up(&tcon->ses->sesSem); |
3e84469d SF |
348 | /* BB FIXME add code to check if wsize needs |
349 | update due to negotiated smb buffer size | |
350 | shrinking */ | |
35028d71 | 351 | if (rc == 0) { |
1da177e4 | 352 | atomic_inc(&tconInfoReconnectCount); |
35028d71 SF |
353 | /* tell server Unix caps we support */ |
354 | if (tcon->ses->capabilities & CAP_UNIX) | |
355 | reset_cifs_unix_caps( | |
356 | 0 /* no xid */, | |
357 | tcon, | |
358 | NULL /* do not know sb */, | |
359 | NULL /* no vol info */); | |
360 | } | |
1da177e4 LT |
361 | |
362 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
50c2f753 SF |
363 | /* Removed call to reopen open files here. |
364 | It is safer (and faster) to reopen files | |
09d1db5c | 365 | one at a time as needed in read and write */ |
1da177e4 | 366 | |
50c2f753 | 367 | /* Check if handle based operation so we |
09d1db5c SF |
368 | know whether we can continue or not without |
369 | returning to caller to reset file handle */ | |
50c2f753 | 370 | switch (smb_command) { |
1da177e4 LT |
371 | case SMB_COM_READ_ANDX: |
372 | case SMB_COM_WRITE_ANDX: | |
373 | case SMB_COM_CLOSE: | |
374 | case SMB_COM_FIND_CLOSE2: | |
375 | case SMB_COM_LOCKING_ANDX: { | |
376 | unload_nls(nls_codepage); | |
377 | return -EAGAIN; | |
378 | } | |
379 | } | |
380 | } else { | |
381 | up(&tcon->ses->sesSem); | |
382 | } | |
383 | unload_nls(nls_codepage); | |
384 | ||
385 | } else { | |
386 | return -EIO; | |
387 | } | |
388 | } | |
790fe579 | 389 | if (rc) |
1da177e4 LT |
390 | return rc; |
391 | ||
392 | *request_buf = cifs_buf_get(); | |
393 | if (*request_buf == NULL) { | |
394 | /* BB should we add a retry in here if not a writepage? */ | |
395 | return -ENOMEM; | |
396 | } | |
397 | /* Although the original thought was we needed the response buf for */ | |
398 | /* potential retries of smb operations it turns out we can determine */ | |
399 | /* from the mid flags when the request buffer can be resent without */ | |
400 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 401 | if (response_buf) |
50c2f753 | 402 | *response_buf = *request_buf; |
1da177e4 LT |
403 | |
404 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 405 | wct); |
1da177e4 | 406 | |
790fe579 SF |
407 | if (tcon != NULL) |
408 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 409 | |
1da177e4 LT |
410 | return rc; |
411 | } | |
412 | ||
50c2f753 | 413 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 LT |
414 | { |
415 | int rc = -EINVAL; | |
416 | int total_size; | |
50c2f753 | 417 | char *pBCC; |
1da177e4 LT |
418 | |
419 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
420 | /* check for parm and data offset going beyond end of smb */ | |
790fe579 SF |
421 | if (pSMB->hdr.WordCount >= 10) { |
422 | if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
1da177e4 LT |
423 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { |
424 | /* check that bcc is at least as big as parms + data */ | |
425 | /* check that bcc is less than negotiated smb buffer */ | |
426 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
790fe579 | 427 | if (total_size < 512) { |
c18c842b | 428 | total_size += |
63135e08 | 429 | le16_to_cpu(pSMB->t2_rsp.DataCount); |
1da177e4 | 430 | /* BCC le converted in SendReceive */ |
50c2f753 | 431 | pBCC = (pSMB->hdr.WordCount * 2) + |
09d1db5c | 432 | sizeof(struct smb_hdr) + |
1da177e4 | 433 | (char *)pSMB; |
790fe579 | 434 | if ((total_size <= (*(u16 *)pBCC)) && |
50c2f753 | 435 | (total_size < |
1da177e4 LT |
436 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { |
437 | return 0; | |
438 | } | |
1da177e4 LT |
439 | } |
440 | } | |
441 | } | |
50c2f753 | 442 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 LT |
443 | sizeof(struct smb_t2_rsp) + 16); |
444 | return rc; | |
445 | } | |
446 | int | |
447 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
448 | { | |
449 | NEGOTIATE_REQ *pSMB; | |
450 | NEGOTIATE_RSP *pSMBr; | |
451 | int rc = 0; | |
452 | int bytes_returned; | |
3979877e | 453 | int i; |
50c2f753 | 454 | struct TCP_Server_Info *server; |
1da177e4 | 455 | u16 count; |
750d1151 | 456 | unsigned int secFlags; |
733f99ac | 457 | u16 dialect; |
1da177e4 | 458 | |
790fe579 | 459 | if (ses->server) |
1da177e4 LT |
460 | server = ses->server; |
461 | else { | |
462 | rc = -EIO; | |
463 | return rc; | |
464 | } | |
465 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
466 | (void **) &pSMB, (void **) &pSMBr); | |
467 | if (rc) | |
468 | return rc; | |
750d1151 SF |
469 | |
470 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 471 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 472 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 SF |
473 | else /* if override flags set only sign/seal OR them with global auth */ |
474 | secFlags = extended_security | ses->overrideSecFlg; | |
475 | ||
762e5ab7 | 476 | cFYI(1, ("secFlags 0x%x", secFlags)); |
f40c5628 | 477 | |
1982c344 | 478 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 479 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 480 | |
100c1ddc | 481 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 482 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d SF |
483 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
484 | cFYI(1, ("Kerberos only mechanism, enable extended security")); | |
485 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
486 | } | |
50c2f753 | 487 | |
3979877e | 488 | count = 0; |
50c2f753 | 489 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
490 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
491 | count += strlen(protocols[i].name) + 1; | |
492 | /* null at end of source and target buffers anyway */ | |
493 | } | |
1da177e4 LT |
494 | pSMB->hdr.smb_buf_length += count; |
495 | pSMB->ByteCount = cpu_to_le16(count); | |
496 | ||
497 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
498 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 499 | if (rc != 0) |
254e55ed SF |
500 | goto neg_err_exit; |
501 | ||
733f99ac | 502 | dialect = le16_to_cpu(pSMBr->DialectIndex); |
790fe579 | 503 | cFYI(1, ("Dialect: %d", dialect)); |
254e55ed | 504 | /* Check wct = 1 error case */ |
790fe579 | 505 | if ((pSMBr->hdr.WordCount < 13) || (dialect == BAD_PROT)) { |
254e55ed | 506 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 507 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
508 | could not negotiate a common dialect */ |
509 | rc = -EOPNOTSUPP; | |
510 | goto neg_err_exit; | |
50c2f753 | 511 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 512 | } else if ((pSMBr->hdr.WordCount == 13) |
733f99ac AV |
513 | && ((dialect == LANMAN_PROT) |
514 | || (dialect == LANMAN2_PROT))) { | |
b815f1e5 | 515 | __s16 tmp; |
50c2f753 | 516 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 517 | |
790fe579 | 518 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 519 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
520 | server->secType = LANMAN; |
521 | else { | |
522 | cERROR(1, ("mount failed weak security disabled" | |
523 | " in /proc/fs/cifs/SecurityFlags")); | |
3979877e SF |
524 | rc = -EOPNOTSUPP; |
525 | goto neg_err_exit; | |
50c2f753 | 526 | } |
254e55ed SF |
527 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); |
528 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
529 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
3979877e | 530 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
254e55ed SF |
531 | GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey); |
532 | /* even though we do not use raw we might as well set this | |
533 | accurately, in case we ever find a need for it */ | |
790fe579 | 534 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
254e55ed SF |
535 | server->maxRw = 0xFF00; |
536 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
537 | } else { | |
538 | server->maxRw = 0;/* we do not need to use raw anyway */ | |
539 | server->capabilities = CAP_MPX_MODE; | |
540 | } | |
b815f1e5 | 541 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 542 | if (tmp == -1) { |
25ee4a98 SF |
543 | /* OS/2 often does not set timezone therefore |
544 | * we must use server time to calc time zone. | |
b815f1e5 SF |
545 | * Could deviate slightly from the right zone. |
546 | * Smallest defined timezone difference is 15 minutes | |
547 | * (i.e. Nepal). Rounding up/down is done to match | |
548 | * this requirement. | |
25ee4a98 | 549 | */ |
b815f1e5 | 550 | int val, seconds, remain, result; |
25ee4a98 SF |
551 | struct timespec ts, utc; |
552 | utc = CURRENT_TIME; | |
553 | ts = cnvrtDosUnixTm(le16_to_cpu(rsp->SrvTime.Date), | |
554 | le16_to_cpu(rsp->SrvTime.Time)); | |
50c2f753 SF |
555 | cFYI(1, ("SrvTime %d sec since 1970 (utc: %d) diff: %d", |
556 | (int)ts.tv_sec, (int)utc.tv_sec, | |
25ee4a98 | 557 | (int)(utc.tv_sec - ts.tv_sec))); |
b815f1e5 | 558 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 559 | seconds = abs(val); |
947a5067 | 560 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 561 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 562 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 563 | result += MIN_TZ_ADJ; |
790fe579 | 564 | if (val < 0) |
ad7a2926 | 565 | result = -result; |
b815f1e5 | 566 | server->timeAdj = result; |
25ee4a98 | 567 | } else { |
b815f1e5 SF |
568 | server->timeAdj = (int)tmp; |
569 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 570 | } |
790fe579 | 571 | cFYI(1, ("server->timeAdj: %d seconds", server->timeAdj)); |
25ee4a98 | 572 | |
3979877e | 573 | |
254e55ed | 574 | /* BB get server time for time conversions and add |
50c2f753 | 575 | code to use it and timezone since this is not UTC */ |
3979877e | 576 | |
50c2f753 | 577 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 578 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
254e55ed SF |
579 | memcpy(server->cryptKey, rsp->EncryptionKey, |
580 | CIFS_CRYPTO_KEY_SIZE); | |
581 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
582 | rc = -EIO; /* need cryptkey unless plain text */ | |
583 | goto neg_err_exit; | |
584 | } | |
3979877e | 585 | |
790fe579 | 586 | cFYI(1, ("LANMAN negotiated")); |
254e55ed SF |
587 | /* we will not end up setting signing flags - as no signing |
588 | was in LANMAN and server did not return the flags on */ | |
589 | goto signing_check; | |
7c7b25bc | 590 | #else /* weak security disabled */ |
790fe579 | 591 | } else if (pSMBr->hdr.WordCount == 13) { |
50c2f753 | 592 | cERROR(1, ("mount failed, cifs module not built " |
254e55ed | 593 | "with CIFS_WEAK_PW_HASH support")); |
7c7b25bc SF |
594 | rc = -EOPNOTSUPP; |
595 | #endif /* WEAK_PW_HASH */ | |
254e55ed | 596 | goto neg_err_exit; |
790fe579 | 597 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
598 | /* unknown wct */ |
599 | rc = -EOPNOTSUPP; | |
600 | goto neg_err_exit; | |
601 | } | |
602 | /* else wct == 17 NTLM */ | |
603 | server->secMode = pSMBr->SecurityMode; | |
790fe579 SF |
604 | if ((server->secMode & SECMODE_USER) == 0) |
605 | cFYI(1, ("share mode security")); | |
bdc4bf6e | 606 | |
790fe579 | 607 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 608 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 609 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 610 | #endif /* CIFS_WEAK_PW_HASH */ |
50c2f753 | 611 | cERROR(1, ("Server requests plain text password" |
254e55ed | 612 | " but client support disabled")); |
9312f675 | 613 | |
790fe579 | 614 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 615 | server->secType = NTLMv2; |
790fe579 | 616 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 617 | server->secType = NTLM; |
790fe579 | 618 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 619 | server->secType = NTLMv2; |
a013689d SF |
620 | else if (secFlags & CIFSSEC_MAY_KRB5) |
621 | server->secType = Kerberos; | |
622 | else if (secFlags & CIFSSEC_MAY_LANMAN) | |
623 | server->secType = LANMAN; | |
624 | /* #ifdef CONFIG_CIFS_EXPERIMENTAL | |
625 | else if (secFlags & CIFSSEC_MAY_PLNTXT) | |
626 | server->secType = ?? | |
627 | #endif */ | |
628 | else { | |
629 | rc = -EOPNOTSUPP; | |
630 | cERROR(1, ("Invalid security type")); | |
631 | goto neg_err_exit; | |
632 | } | |
633 | /* else ... any others ...? */ | |
254e55ed SF |
634 | |
635 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
636 | little endian */ | |
637 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
638 | /* probably no need to store and check maxvcs */ | |
639 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
1da177e4 | 640 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); |
254e55ed | 641 | server->maxRw = le32_to_cpu(pSMBr->MaxRawSize); |
90c81e0b | 642 | cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf)); |
254e55ed SF |
643 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); |
644 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
b815f1e5 SF |
645 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
646 | server->timeAdj *= 60; | |
254e55ed SF |
647 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
648 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
649 | CIFS_CRYPTO_KEY_SIZE); | |
650 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
651 | && (pSMBr->EncryptionKeyLength == 0)) { | |
652 | /* decode security blob */ | |
653 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
654 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
655 | goto neg_err_exit; | |
656 | } | |
1da177e4 | 657 | |
254e55ed SF |
658 | /* BB might be helpful to save off the domain of server here */ |
659 | ||
50c2f753 | 660 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && |
254e55ed SF |
661 | (server->capabilities & CAP_EXTENDED_SECURITY)) { |
662 | count = pSMBr->ByteCount; | |
e187e44e | 663 | if (count < 16) { |
254e55ed | 664 | rc = -EIO; |
e187e44e JL |
665 | goto neg_err_exit; |
666 | } | |
e7ddee90 JL |
667 | read_lock(&cifs_tcp_ses_lock); |
668 | if (server->srv_count > 1) { | |
669 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
670 | if (memcmp(server->server_GUID, |
671 | pSMBr->u.extended_response. | |
672 | GUID, 16) != 0) { | |
673 | cFYI(1, ("server UID changed")); | |
254e55ed | 674 | memcpy(server->server_GUID, |
e187e44e JL |
675 | pSMBr->u.extended_response.GUID, |
676 | 16); | |
677 | } | |
e7ddee90 JL |
678 | } else { |
679 | read_unlock(&cifs_tcp_ses_lock); | |
e187e44e JL |
680 | memcpy(server->server_GUID, |
681 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 682 | } |
e187e44e JL |
683 | |
684 | if (count == 16) { | |
685 | server->secType = RawNTLMSSP; | |
254e55ed SF |
686 | } else { |
687 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
688 | SecurityBlob, | |
689 | count - 16, | |
690 | &server->secType); | |
ef571cad | 691 | if (rc == 1) |
e545937a | 692 | rc = 0; |
ef571cad | 693 | else |
254e55ed | 694 | rc = -EINVAL; |
1da177e4 | 695 | } |
254e55ed SF |
696 | } else |
697 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
698 | ||
6344a423 | 699 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 700 | signing_check: |
6344a423 | 701 | #endif |
762e5ab7 SF |
702 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
703 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
704 | so if this is zero it means that signing is disabled */ | |
705 | cFYI(1, ("Signing disabled")); | |
abb63d6c | 706 | if (server->secMode & SECMODE_SIGN_REQUIRED) { |
762e5ab7 | 707 | cERROR(1, ("Server requires " |
7111d214 JL |
708 | "packet signing to be enabled in " |
709 | "/proc/fs/cifs/SecurityFlags.")); | |
abb63d6c SF |
710 | rc = -EOPNOTSUPP; |
711 | } | |
50c2f753 | 712 | server->secMode &= |
254e55ed | 713 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
714 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
715 | /* signing required */ | |
38c10a1d | 716 | cFYI(1, ("Must sign - secFlags 0x%x", secFlags)); |
762e5ab7 SF |
717 | if ((server->secMode & |
718 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
719 | cERROR(1, | |
720 | ("signing required but server lacks support")); | |
38c10a1d | 721 | rc = -EOPNOTSUPP; |
762e5ab7 SF |
722 | } else |
723 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
724 | } else { | |
725 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
790fe579 | 726 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) |
50c2f753 | 727 | server->secMode &= |
254e55ed | 728 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 729 | } |
50c2f753 SF |
730 | |
731 | neg_err_exit: | |
4a6d87f1 | 732 | cifs_buf_release(pSMB); |
254e55ed | 733 | |
790fe579 | 734 | cFYI(1, ("negprot rc %d", rc)); |
1da177e4 LT |
735 | return rc; |
736 | } | |
737 | ||
738 | int | |
739 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
740 | { | |
741 | struct smb_hdr *smb_buffer; | |
1da177e4 | 742 | int rc = 0; |
1da177e4 LT |
743 | |
744 | cFYI(1, ("In tree disconnect")); | |
745 | /* | |
746 | * If last user of the connection and | |
747 | * connection alive - disconnect it | |
748 | * If this is the last connection on the server session disconnect it | |
50c2f753 | 749 | * (and inside session disconnect we should check if tcp socket needs |
1da177e4 LT |
750 | * to be freed and kernel thread woken up). |
751 | */ | |
752 | if (tcon) | |
753 | down(&tcon->tconSem); | |
754 | else | |
755 | return -EIO; | |
756 | ||
757 | atomic_dec(&tcon->useCount); | |
758 | if (atomic_read(&tcon->useCount) > 0) { | |
759 | up(&tcon->tconSem); | |
760 | return -EBUSY; | |
761 | } | |
762 | ||
50c2f753 | 763 | /* No need to return error on this operation if tid invalidated and |
1da177e4 | 764 | closed on server already e.g. due to tcp session crashing */ |
3b795210 | 765 | if (tcon->need_reconnect) { |
1da177e4 | 766 | up(&tcon->tconSem); |
50c2f753 | 767 | return 0; |
1da177e4 LT |
768 | } |
769 | ||
790fe579 | 770 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) { |
1da177e4 LT |
771 | up(&tcon->tconSem); |
772 | return -EIO; | |
773 | } | |
50c2f753 | 774 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 775 | (void **)&smb_buffer); |
1da177e4 LT |
776 | if (rc) { |
777 | up(&tcon->tconSem); | |
778 | return rc; | |
cd63499c | 779 | } |
133672ef SF |
780 | |
781 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
1da177e4 | 782 | if (rc) |
966ca923 | 783 | cFYI(1, ("Tree disconnect failed %d", rc)); |
1da177e4 | 784 | |
1da177e4 LT |
785 | up(&tcon->tconSem); |
786 | ||
50c2f753 | 787 | /* No need to return error on this operation if tid invalidated and |
1da177e4 LT |
788 | closed on server already e.g. due to tcp session crashing */ |
789 | if (rc == -EAGAIN) | |
790 | rc = 0; | |
791 | ||
792 | return rc; | |
793 | } | |
794 | ||
795 | int | |
796 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
797 | { | |
1da177e4 LT |
798 | LOGOFF_ANDX_REQ *pSMB; |
799 | int rc = 0; | |
1da177e4 LT |
800 | |
801 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
3b795210 | 802 | |
14fbf50d JL |
803 | /* |
804 | * BB: do we need to check validity of ses and server? They should | |
805 | * always be valid since we have an active reference. If not, that | |
806 | * should probably be a BUG() | |
807 | */ | |
808 | if (!ses || !ses->server) | |
3b795210 SF |
809 | return -EIO; |
810 | ||
14fbf50d | 811 | down(&ses->sesSem); |
3b795210 SF |
812 | if (ses->need_reconnect) |
813 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
814 | already closed due to reconnect */ | |
1da177e4 LT |
815 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
816 | if (rc) { | |
817 | up(&ses->sesSem); | |
818 | return rc; | |
819 | } | |
820 | ||
3b795210 | 821 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 822 | |
3b795210 | 823 | if (ses->server->secMode & |
1da177e4 LT |
824 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
825 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
826 | |
827 | pSMB->hdr.Uid = ses->Suid; | |
828 | ||
829 | pSMB->AndXCommand = 0xFF; | |
133672ef | 830 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); |
3b795210 | 831 | session_already_dead: |
a59c6586 | 832 | up(&ses->sesSem); |
1da177e4 LT |
833 | |
834 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 835 | since server closed smb session, no sense reporting |
1da177e4 LT |
836 | error */ |
837 | if (rc == -EAGAIN) | |
838 | rc = 0; | |
839 | return rc; | |
840 | } | |
841 | ||
2d785a50 SF |
842 | int |
843 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
844 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
845 | { | |
846 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
847 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
848 | struct unlink_psx_rq *pRqD; | |
849 | int name_len; | |
850 | int rc = 0; | |
851 | int bytes_returned = 0; | |
852 | __u16 params, param_offset, offset, byte_count; | |
853 | ||
854 | cFYI(1, ("In POSIX delete")); | |
855 | PsxDelete: | |
856 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
857 | (void **) &pSMBr); | |
858 | if (rc) | |
859 | return rc; | |
860 | ||
861 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
862 | name_len = | |
863 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
864 | PATH_MAX, nls_codepage, remap); | |
865 | name_len++; /* trailing null */ | |
866 | name_len *= 2; | |
867 | } else { /* BB add path length overrun check */ | |
868 | name_len = strnlen(fileName, PATH_MAX); | |
869 | name_len++; /* trailing null */ | |
870 | strncpy(pSMB->FileName, fileName, name_len); | |
871 | } | |
872 | ||
873 | params = 6 + name_len; | |
874 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
875 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
876 | pSMB->MaxSetupCount = 0; | |
877 | pSMB->Reserved = 0; | |
878 | pSMB->Flags = 0; | |
879 | pSMB->Timeout = 0; | |
880 | pSMB->Reserved2 = 0; | |
881 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
882 | InformationLevel) - 4; | |
883 | offset = param_offset + params; | |
884 | ||
885 | /* Setup pointer to Request Data (inode type) */ | |
886 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
887 | pRqD->type = cpu_to_le16(type); | |
888 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
889 | pSMB->DataOffset = cpu_to_le16(offset); | |
890 | pSMB->SetupCount = 1; | |
891 | pSMB->Reserved3 = 0; | |
892 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
893 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
894 | ||
895 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
896 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
897 | pSMB->ParameterCount = cpu_to_le16(params); | |
898 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
899 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
900 | pSMB->Reserved4 = 0; | |
901 | pSMB->hdr.smb_buf_length += byte_count; | |
902 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
903 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
904 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 905 | if (rc) |
2d785a50 | 906 | cFYI(1, ("Posix delete returned %d", rc)); |
2d785a50 SF |
907 | cifs_buf_release(pSMB); |
908 | ||
909 | cifs_stats_inc(&tcon->num_deletes); | |
910 | ||
911 | if (rc == -EAGAIN) | |
912 | goto PsxDelete; | |
913 | ||
914 | return rc; | |
915 | } | |
916 | ||
1da177e4 | 917 | int |
737b758c SF |
918 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, |
919 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
920 | { |
921 | DELETE_FILE_REQ *pSMB = NULL; | |
922 | DELETE_FILE_RSP *pSMBr = NULL; | |
923 | int rc = 0; | |
924 | int bytes_returned; | |
925 | int name_len; | |
926 | ||
927 | DelFileRetry: | |
928 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
929 | (void **) &pSMBr); | |
930 | if (rc) | |
931 | return rc; | |
932 | ||
933 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
934 | name_len = | |
50c2f753 | 935 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, |
737b758c | 936 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
937 | name_len++; /* trailing null */ |
938 | name_len *= 2; | |
09d1db5c | 939 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
940 | name_len = strnlen(fileName, PATH_MAX); |
941 | name_len++; /* trailing null */ | |
942 | strncpy(pSMB->fileName, fileName, name_len); | |
943 | } | |
944 | pSMB->SearchAttributes = | |
945 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
946 | pSMB->BufferFormat = 0x04; | |
947 | pSMB->hdr.smb_buf_length += name_len + 1; | |
948 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
949 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
950 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 951 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 952 | if (rc) |
1da177e4 | 953 | cFYI(1, ("Error in RMFile = %d", rc)); |
1da177e4 LT |
954 | |
955 | cifs_buf_release(pSMB); | |
956 | if (rc == -EAGAIN) | |
957 | goto DelFileRetry; | |
958 | ||
959 | return rc; | |
960 | } | |
961 | ||
962 | int | |
50c2f753 | 963 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, |
737b758c | 964 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
965 | { |
966 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
967 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
968 | int rc = 0; | |
969 | int bytes_returned; | |
970 | int name_len; | |
971 | ||
972 | cFYI(1, ("In CIFSSMBRmDir")); | |
973 | RmDirRetry: | |
974 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
975 | (void **) &pSMBr); | |
976 | if (rc) | |
977 | return rc; | |
978 | ||
979 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
737b758c SF |
980 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, |
981 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
982 | name_len++; /* trailing null */ |
983 | name_len *= 2; | |
09d1db5c | 984 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
985 | name_len = strnlen(dirName, PATH_MAX); |
986 | name_len++; /* trailing null */ | |
987 | strncpy(pSMB->DirName, dirName, name_len); | |
988 | } | |
989 | ||
990 | pSMB->BufferFormat = 0x04; | |
991 | pSMB->hdr.smb_buf_length += name_len + 1; | |
992 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
993 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
994 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 995 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 996 | if (rc) |
1da177e4 | 997 | cFYI(1, ("Error in RMDir = %d", rc)); |
1da177e4 LT |
998 | |
999 | cifs_buf_release(pSMB); | |
1000 | if (rc == -EAGAIN) | |
1001 | goto RmDirRetry; | |
1002 | return rc; | |
1003 | } | |
1004 | ||
1005 | int | |
1006 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 1007 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1008 | { |
1009 | int rc = 0; | |
1010 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
1011 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
1012 | int bytes_returned; | |
1013 | int name_len; | |
1014 | ||
1015 | cFYI(1, ("In CIFSSMBMkDir")); | |
1016 | MkDirRetry: | |
1017 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
1018 | (void **) &pSMBr); | |
1019 | if (rc) | |
1020 | return rc; | |
1021 | ||
1022 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 1023 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, |
737b758c | 1024 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1025 | name_len++; /* trailing null */ |
1026 | name_len *= 2; | |
09d1db5c | 1027 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1028 | name_len = strnlen(name, PATH_MAX); |
1029 | name_len++; /* trailing null */ | |
1030 | strncpy(pSMB->DirName, name, name_len); | |
1031 | } | |
1032 | ||
1033 | pSMB->BufferFormat = 0x04; | |
1034 | pSMB->hdr.smb_buf_length += name_len + 1; | |
1035 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
1036 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1037 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1038 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 1039 | if (rc) |
1da177e4 | 1040 | cFYI(1, ("Error in Mkdir = %d", rc)); |
a5a2b489 | 1041 | |
1da177e4 LT |
1042 | cifs_buf_release(pSMB); |
1043 | if (rc == -EAGAIN) | |
1044 | goto MkDirRetry; | |
1045 | return rc; | |
1046 | } | |
1047 | ||
2dd29d31 SF |
1048 | int |
1049 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
ad7a2926 | 1050 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1051 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1052 | const struct nls_table *nls_codepage, int remap) |
1053 | { | |
1054 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1055 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1056 | int name_len; | |
1057 | int rc = 0; | |
1058 | int bytes_returned = 0; | |
2dd29d31 | 1059 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1060 | OPEN_PSX_REQ *pdata; |
1061 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 SF |
1062 | |
1063 | cFYI(1, ("In POSIX Create")); | |
1064 | PsxCreat: | |
1065 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1066 | (void **) &pSMBr); | |
1067 | if (rc) | |
1068 | return rc; | |
1069 | ||
1070 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1071 | name_len = | |
1072 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1073 | PATH_MAX, nls_codepage, remap); | |
1074 | name_len++; /* trailing null */ | |
1075 | name_len *= 2; | |
1076 | } else { /* BB improve the check for buffer overruns BB */ | |
1077 | name_len = strnlen(name, PATH_MAX); | |
1078 | name_len++; /* trailing null */ | |
1079 | strncpy(pSMB->FileName, name, name_len); | |
1080 | } | |
1081 | ||
1082 | params = 6 + name_len; | |
1083 | count = sizeof(OPEN_PSX_REQ); | |
1084 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1085 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1086 | pSMB->MaxSetupCount = 0; | |
1087 | pSMB->Reserved = 0; | |
1088 | pSMB->Flags = 0; | |
1089 | pSMB->Timeout = 0; | |
1090 | pSMB->Reserved2 = 0; | |
1091 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1092 | InformationLevel) - 4; |
2dd29d31 | 1093 | offset = param_offset + params; |
2dd29d31 | 1094 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1095 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1096 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1097 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1098 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1099 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1100 | pSMB->DataOffset = cpu_to_le16(offset); | |
1101 | pSMB->SetupCount = 1; | |
1102 | pSMB->Reserved3 = 0; | |
1103 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1104 | byte_count = 3 /* pad */ + params + count; | |
1105 | ||
1106 | pSMB->DataCount = cpu_to_le16(count); | |
1107 | pSMB->ParameterCount = cpu_to_le16(params); | |
1108 | pSMB->TotalDataCount = pSMB->DataCount; | |
1109 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1110 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1111 | pSMB->Reserved4 = 0; | |
50c2f753 | 1112 | pSMB->hdr.smb_buf_length += byte_count; |
2dd29d31 SF |
1113 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1114 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1115 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1116 | if (rc) { | |
1117 | cFYI(1, ("Posix create returned %d", rc)); | |
1118 | goto psx_create_err; | |
1119 | } | |
1120 | ||
790fe579 | 1121 | cFYI(1, ("copying inode info")); |
2dd29d31 SF |
1122 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1123 | ||
1124 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1125 | rc = -EIO; /* bad smb */ | |
1126 | goto psx_create_err; | |
1127 | } | |
1128 | ||
1129 | /* copy return information to pRetData */ | |
50c2f753 | 1130 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1131 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1132 | |
2dd29d31 | 1133 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1134 | if (netfid) |
2dd29d31 SF |
1135 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1136 | /* Let caller know file was created so we can set the mode. */ | |
1137 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1138 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1139 | *pOplock |= CIFS_CREATE_ACTION; |
1140 | /* check to make sure response data is there */ | |
8f2376ad CG |
1141 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1142 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
90c81e0b | 1143 | cFYI(DBG2, ("unknown type")); |
cbac3cba | 1144 | } else { |
790fe579 | 1145 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1146 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
50c2f753 | 1147 | cERROR(1, ("Open response data too small")); |
8f2376ad | 1148 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1149 | goto psx_create_err; |
1150 | } | |
50c2f753 | 1151 | memcpy((char *) pRetData, |
cbac3cba | 1152 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1153 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1154 | } |
2dd29d31 SF |
1155 | |
1156 | psx_create_err: | |
1157 | cifs_buf_release(pSMB); | |
1158 | ||
1159 | cifs_stats_inc(&tcon->num_mkdirs); | |
1160 | ||
1161 | if (rc == -EAGAIN) | |
1162 | goto PsxCreat; | |
1163 | ||
50c2f753 | 1164 | return rc; |
2dd29d31 SF |
1165 | } |
1166 | ||
a9d02ad4 SF |
1167 | static __u16 convert_disposition(int disposition) |
1168 | { | |
1169 | __u16 ofun = 0; | |
1170 | ||
1171 | switch (disposition) { | |
1172 | case FILE_SUPERSEDE: | |
1173 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1174 | break; | |
1175 | case FILE_OPEN: | |
1176 | ofun = SMBOPEN_OAPPEND; | |
1177 | break; | |
1178 | case FILE_CREATE: | |
1179 | ofun = SMBOPEN_OCREATE; | |
1180 | break; | |
1181 | case FILE_OPEN_IF: | |
1182 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1183 | break; | |
1184 | case FILE_OVERWRITE: | |
1185 | ofun = SMBOPEN_OTRUNC; | |
1186 | break; | |
1187 | case FILE_OVERWRITE_IF: | |
1188 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1189 | break; | |
1190 | default: | |
790fe579 | 1191 | cFYI(1, ("unknown disposition %d", disposition)); |
a9d02ad4 SF |
1192 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1193 | } | |
1194 | return ofun; | |
1195 | } | |
1196 | ||
35fc37d5 JL |
1197 | static int |
1198 | access_flags_to_smbopen_mode(const int access_flags) | |
1199 | { | |
1200 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1201 | ||
1202 | if (masked_flags == GENERIC_READ) | |
1203 | return SMBOPEN_READ; | |
1204 | else if (masked_flags == GENERIC_WRITE) | |
1205 | return SMBOPEN_WRITE; | |
1206 | ||
1207 | /* just go for read/write */ | |
1208 | return SMBOPEN_READWRITE; | |
1209 | } | |
1210 | ||
a9d02ad4 SF |
1211 | int |
1212 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1213 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1214 | const int access_flags, const int create_options, __u16 *netfid, |
1215 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1216 | const struct nls_table *nls_codepage, int remap) |
1217 | { | |
1218 | int rc = -EACCES; | |
1219 | OPENX_REQ *pSMB = NULL; | |
1220 | OPENX_RSP *pSMBr = NULL; | |
1221 | int bytes_returned; | |
1222 | int name_len; | |
1223 | __u16 count; | |
1224 | ||
1225 | OldOpenRetry: | |
1226 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1227 | (void **) &pSMBr); | |
1228 | if (rc) | |
1229 | return rc; | |
1230 | ||
1231 | pSMB->AndXCommand = 0xFF; /* none */ | |
1232 | ||
1233 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1234 | count = 1; /* account for one byte pad to word boundary */ | |
1235 | name_len = | |
1236 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1237 | fileName, PATH_MAX, nls_codepage, remap); | |
1238 | name_len++; /* trailing null */ | |
1239 | name_len *= 2; | |
1240 | } else { /* BB improve check for buffer overruns BB */ | |
1241 | count = 0; /* no pad */ | |
1242 | name_len = strnlen(fileName, PATH_MAX); | |
1243 | name_len++; /* trailing null */ | |
1244 | strncpy(pSMB->fileName, fileName, name_len); | |
1245 | } | |
1246 | if (*pOplock & REQ_OPLOCK) | |
1247 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1248 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1249 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1250 | |
a9d02ad4 | 1251 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1252 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1253 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1254 | /* set file as system file if special file such | |
1255 | as fifo and server expecting SFU style and | |
1256 | no Unix extensions */ | |
1257 | ||
790fe579 SF |
1258 | if (create_options & CREATE_OPTION_SPECIAL) |
1259 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1260 | else /* BB FIXME BB */ |
1261 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1262 | |
67750fb9 JL |
1263 | if (create_options & CREATE_OPTION_READONLY) |
1264 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1265 | |
1266 | /* BB FIXME BB */ | |
50c2f753 SF |
1267 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1268 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1269 | /* BB FIXME END BB */ |
3e87d803 SF |
1270 | |
1271 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1272 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 SF |
1273 | count += name_len; |
1274 | pSMB->hdr.smb_buf_length += count; | |
1275 | ||
1276 | pSMB->ByteCount = cpu_to_le16(count); | |
1277 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1278 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1279 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a9d02ad4 SF |
1280 | cifs_stats_inc(&tcon->num_opens); |
1281 | if (rc) { | |
1282 | cFYI(1, ("Error in Open = %d", rc)); | |
1283 | } else { | |
1284 | /* BB verify if wct == 15 */ | |
1285 | ||
582d21e5 | 1286 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1287 | |
1288 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1289 | /* Let caller know file was created so we can set the mode. */ | |
1290 | /* Do we care about the CreateAction in any other cases? */ | |
1291 | /* BB FIXME BB */ | |
790fe579 | 1292 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1293 | *pOplock |= CIFS_CREATE_ACTION; */ |
1294 | /* BB FIXME END */ | |
1295 | ||
790fe579 | 1296 | if (pfile_info) { |
a9d02ad4 SF |
1297 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1298 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1299 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1300 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1301 | pfile_info->Attributes = |
50c2f753 | 1302 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1303 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1304 | pfile_info->AllocationSize = |
1305 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1306 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1307 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1308 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1309 | } |
1310 | } | |
1311 | ||
1312 | cifs_buf_release(pSMB); | |
1313 | if (rc == -EAGAIN) | |
1314 | goto OldOpenRetry; | |
1315 | return rc; | |
1316 | } | |
1317 | ||
1da177e4 LT |
1318 | int |
1319 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1320 | const char *fileName, const int openDisposition, | |
ad7a2926 SF |
1321 | const int access_flags, const int create_options, __u16 *netfid, |
1322 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1323 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1324 | { |
1325 | int rc = -EACCES; | |
1326 | OPEN_REQ *pSMB = NULL; | |
1327 | OPEN_RSP *pSMBr = NULL; | |
1328 | int bytes_returned; | |
1329 | int name_len; | |
1330 | __u16 count; | |
1331 | ||
1332 | openRetry: | |
1333 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1334 | (void **) &pSMBr); | |
1335 | if (rc) | |
1336 | return rc; | |
1337 | ||
1338 | pSMB->AndXCommand = 0xFF; /* none */ | |
1339 | ||
1340 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1341 | count = 1; /* account for one byte pad to word boundary */ | |
1342 | name_len = | |
b1a45695 | 1343 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), |
737b758c | 1344 | fileName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1345 | name_len++; /* trailing null */ |
1346 | name_len *= 2; | |
1347 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1348 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1349 | count = 0; /* no pad */ |
1350 | name_len = strnlen(fileName, PATH_MAX); | |
1351 | name_len++; /* trailing null */ | |
1352 | pSMB->NameLength = cpu_to_le16(name_len); | |
1353 | strncpy(pSMB->fileName, fileName, name_len); | |
1354 | } | |
1355 | if (*pOplock & REQ_OPLOCK) | |
1356 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1357 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1358 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1359 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1360 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1361 | /* set file as system file if special file such |
1362 | as fifo and server expecting SFU style and | |
1363 | no Unix extensions */ | |
790fe579 | 1364 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1365 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1366 | else | |
1367 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1368 | |
1da177e4 LT |
1369 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1370 | /* but it helps speed up case sensitive checks for other | |
1371 | servers such as Samba */ | |
1372 | if (tcon->ses->capabilities & CAP_UNIX) | |
1373 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1374 | ||
67750fb9 JL |
1375 | if (create_options & CREATE_OPTION_READONLY) |
1376 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1377 | ||
1da177e4 LT |
1378 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1379 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1380 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1381 | /* BB Expirement with various impersonation levels and verify */ |
1382 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1383 | pSMB->SecurityFlags = |
1384 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1385 | ||
1386 | count += name_len; | |
1387 | pSMB->hdr.smb_buf_length += count; | |
1388 | ||
1389 | pSMB->ByteCount = cpu_to_le16(count); | |
1390 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1391 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef | 1392 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); |
a4544347 | 1393 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 LT |
1394 | if (rc) { |
1395 | cFYI(1, ("Error in Open = %d", rc)); | |
1396 | } else { | |
09d1db5c | 1397 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1398 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1399 | /* Let caller know file was created so we can set the mode. */ | |
1400 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1401 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1402 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1403 | if (pfile_info) { |
50c2f753 | 1404 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1da177e4 LT |
1405 | 36 /* CreationTime to Attributes */); |
1406 | /* the file_info buf is endian converted by caller */ | |
1407 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1408 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1409 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
9a8165fc | 1410 | pfile_info->DeletePending = 0; |
1da177e4 | 1411 | } |
1da177e4 | 1412 | } |
a5a2b489 | 1413 | |
1da177e4 LT |
1414 | cifs_buf_release(pSMB); |
1415 | if (rc == -EAGAIN) | |
1416 | goto openRetry; | |
1417 | return rc; | |
1418 | } | |
1419 | ||
1da177e4 | 1420 | int |
50c2f753 SF |
1421 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, |
1422 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1423 | char **buf, int *pbuf_type) | |
1da177e4 LT |
1424 | { |
1425 | int rc = -EACCES; | |
1426 | READ_REQ *pSMB = NULL; | |
1427 | READ_RSP *pSMBr = NULL; | |
1428 | char *pReadData = NULL; | |
bfa0d75a | 1429 | int wct; |
ec637e3f SF |
1430 | int resp_buf_type = 0; |
1431 | struct kvec iov[1]; | |
1da177e4 | 1432 | |
790fe579 SF |
1433 | cFYI(1, ("Reading %d bytes on fid %d", count, netfid)); |
1434 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
bfa0d75a SF |
1435 | wct = 12; |
1436 | else | |
1437 | wct = 10; /* old style read */ | |
1da177e4 LT |
1438 | |
1439 | *nbytes = 0; | |
ec637e3f | 1440 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1441 | if (rc) |
1442 | return rc; | |
1443 | ||
1444 | /* tcon and ses pointer are checked in smb_init */ | |
1445 | if (tcon->ses->server == NULL) | |
1446 | return -ECONNABORTED; | |
1447 | ||
ec637e3f | 1448 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1449 | pSMB->Fid = netfid; |
1450 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
790fe579 | 1451 | if (wct == 12) |
bfa0d75a | 1452 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); |
790fe579 | 1453 | else if ((lseek >> 32) > 0) /* can not handle this big offset for old */ |
ec637e3f | 1454 | return -EIO; |
bfa0d75a | 1455 | |
1da177e4 LT |
1456 | pSMB->Remaining = 0; |
1457 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1458 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1459 | if (wct == 12) |
bfa0d75a SF |
1460 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1461 | else { | |
1462 | /* old style read */ | |
50c2f753 | 1463 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1464 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1465 | pSMBW->ByteCount = 0; |
bfa0d75a | 1466 | } |
ec637e3f SF |
1467 | |
1468 | iov[0].iov_base = (char *)pSMB; | |
1469 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
a761ac57 | 1470 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
133672ef | 1471 | &resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR); |
a4544347 | 1472 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1473 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 LT |
1474 | if (rc) { |
1475 | cERROR(1, ("Send error in read = %d", rc)); | |
1476 | } else { | |
1477 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1478 | data_length = data_length << 16; | |
1479 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1480 | *nbytes = data_length; | |
1481 | ||
1482 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1483 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1484 | || (data_length > count)) { |
50c2f753 SF |
1485 | cFYI(1, ("bad length %d for count %d", |
1486 | data_length, count)); | |
1da177e4 LT |
1487 | rc = -EIO; |
1488 | *nbytes = 0; | |
1489 | } else { | |
ec637e3f | 1490 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1491 | le16_to_cpu(pSMBr->DataOffset); |
1492 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
50c2f753 SF |
1493 | cERROR(1,("Faulting on read rc = %d",rc)); |
1494 | rc = -EFAULT; | |
26f57364 | 1495 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1496 | if (*buf) |
50c2f753 | 1497 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1498 | } |
1499 | } | |
1da177e4 | 1500 | |
4b8f930f | 1501 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1502 | if (*buf) { |
1503 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1504 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1505 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1506 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1507 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1508 | /* return buffer to caller to free */ |
1509 | *buf = iov[0].iov_base; | |
790fe579 | 1510 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1511 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1512 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1513 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1514 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1515 | |
1516 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1517 | since file handle passed in no longer valid */ |
1518 | return rc; | |
1519 | } | |
1520 | ||
ec637e3f | 1521 | |
1da177e4 LT |
1522 | int |
1523 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1524 | const int netfid, const unsigned int count, | |
1525 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
50c2f753 | 1526 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1527 | { |
1528 | int rc = -EACCES; | |
1529 | WRITE_REQ *pSMB = NULL; | |
1530 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1531 | int bytes_returned, wct; |
1da177e4 LT |
1532 | __u32 bytes_sent; |
1533 | __u16 byte_count; | |
1534 | ||
61de800d | 1535 | /* cFYI(1, ("write at %lld %d bytes", offset, count));*/ |
790fe579 | 1536 | if (tcon->ses == NULL) |
1c955187 SF |
1537 | return -ECONNABORTED; |
1538 | ||
790fe579 | 1539 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 SF |
1540 | wct = 14; |
1541 | else | |
1542 | wct = 12; | |
1543 | ||
1544 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1545 | (void **) &pSMBr); |
1546 | if (rc) | |
1547 | return rc; | |
1548 | /* tcon and ses pointer are checked in smb_init */ | |
1549 | if (tcon->ses->server == NULL) | |
1550 | return -ECONNABORTED; | |
1551 | ||
1552 | pSMB->AndXCommand = 0xFF; /* none */ | |
1553 | pSMB->Fid = netfid; | |
1554 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1555 | if (wct == 14) |
1c955187 | 1556 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
790fe579 | 1557 | else if ((offset >> 32) > 0) /* can not handle big offset for old srv */ |
1c955187 | 1558 | return -EIO; |
50c2f753 | 1559 | |
1da177e4 LT |
1560 | pSMB->Reserved = 0xFFFFFFFF; |
1561 | pSMB->WriteMode = 0; | |
1562 | pSMB->Remaining = 0; | |
1563 | ||
50c2f753 | 1564 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1565 | can send more if LARGE_WRITE_X capability returned by the server and if |
1566 | our buffer is big enough or if we convert to iovecs on socket writes | |
1567 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1568 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1569 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1570 | } else { | |
1571 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1572 | & ~0xFF; | |
1573 | } | |
1574 | ||
1575 | if (bytes_sent > count) | |
1576 | bytes_sent = count; | |
1577 | pSMB->DataOffset = | |
50c2f753 | 1578 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1579 | if (buf) |
50c2f753 | 1580 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1581 | else if (ubuf) { |
1582 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1583 | cifs_buf_release(pSMB); |
1584 | return -EFAULT; | |
1585 | } | |
e30dcf3a | 1586 | } else if (count != 0) { |
1da177e4 LT |
1587 | /* No buffer */ |
1588 | cifs_buf_release(pSMB); | |
1589 | return -EINVAL; | |
e30dcf3a | 1590 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1591 | if (wct == 14) |
e30dcf3a | 1592 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1593 | else /* wct == 12 */ |
e30dcf3a | 1594 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1595 | |
1da177e4 LT |
1596 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1597 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
e30dcf3a | 1598 | pSMB->hdr.smb_buf_length += byte_count; |
1c955187 | 1599 | |
790fe579 | 1600 | if (wct == 14) |
1c955187 | 1601 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1602 | else { /* old style write has byte count 4 bytes earlier |
1603 | so 4 bytes pad */ | |
1604 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1605 | (struct smb_com_writex_req *)pSMB; |
1606 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1607 | } | |
1da177e4 LT |
1608 | |
1609 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1610 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1611 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 LT |
1612 | if (rc) { |
1613 | cFYI(1, ("Send error in write = %d", rc)); | |
1614 | *nbytes = 0; | |
1615 | } else { | |
1616 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1617 | *nbytes = (*nbytes) << 16; | |
1618 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1619 | } | |
1620 | ||
1621 | cifs_buf_release(pSMB); | |
1622 | ||
50c2f753 | 1623 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1624 | since file handle passed in no longer valid */ |
1625 | ||
1626 | return rc; | |
1627 | } | |
1628 | ||
d6e04ae6 SF |
1629 | int |
1630 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1da177e4 | 1631 | const int netfid, const unsigned int count, |
3e84469d SF |
1632 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, |
1633 | int n_vec, const int long_op) | |
1da177e4 LT |
1634 | { |
1635 | int rc = -EACCES; | |
1636 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 1637 | int wct; |
d6e04ae6 | 1638 | int smb_hdr_len; |
ec637e3f | 1639 | int resp_buf_type = 0; |
1da177e4 | 1640 | |
790fe579 | 1641 | cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count)); |
ff7feac9 | 1642 | |
790fe579 | 1643 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
8cc64c6e SF |
1644 | wct = 14; |
1645 | else | |
1646 | wct = 12; | |
1647 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); | |
1da177e4 LT |
1648 | if (rc) |
1649 | return rc; | |
1da177e4 LT |
1650 | /* tcon and ses pointer are checked in smb_init */ |
1651 | if (tcon->ses->server == NULL) | |
1652 | return -ECONNABORTED; | |
1653 | ||
d6e04ae6 | 1654 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1655 | pSMB->Fid = netfid; |
1656 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1657 | if (wct == 14) |
8cc64c6e | 1658 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
790fe579 | 1659 | else if ((offset >> 32) > 0) /* can not handle big offset for old srv */ |
8cc64c6e | 1660 | return -EIO; |
1da177e4 LT |
1661 | pSMB->Reserved = 0xFFFFFFFF; |
1662 | pSMB->WriteMode = 0; | |
1663 | pSMB->Remaining = 0; | |
d6e04ae6 | 1664 | |
1da177e4 | 1665 | pSMB->DataOffset = |
50c2f753 | 1666 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1667 | |
3e84469d SF |
1668 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1669 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
d6e04ae6 | 1670 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ |
790fe579 | 1671 | if (wct == 14) |
8cc64c6e SF |
1672 | pSMB->hdr.smb_buf_length += count+1; |
1673 | else /* wct == 12 */ | |
790fe579 SF |
1674 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ |
1675 | if (wct == 14) | |
8cc64c6e SF |
1676 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1677 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1678 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1679 | (struct smb_com_writex_req *)pSMB; |
1680 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1681 | } | |
3e84469d | 1682 | iov[0].iov_base = pSMB; |
790fe579 | 1683 | if (wct == 14) |
ec637e3f SF |
1684 | iov[0].iov_len = smb_hdr_len + 4; |
1685 | else /* wct == 12 pad bigger by four bytes */ | |
1686 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1687 | |
1da177e4 | 1688 | |
ec637e3f | 1689 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 1690 | long_op); |
a4544347 | 1691 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1692 | if (rc) { |
8cc64c6e | 1693 | cFYI(1, ("Send error Write2 = %d", rc)); |
1da177e4 | 1694 | *nbytes = 0; |
790fe579 | 1695 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1696 | /* presumably this can not happen, but best to be safe */ |
1697 | rc = -EIO; | |
1698 | *nbytes = 0; | |
d6e04ae6 | 1699 | } else { |
ad7a2926 | 1700 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
1701 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1702 | *nbytes = (*nbytes) << 16; | |
1703 | *nbytes += le16_to_cpu(pSMBr->Count); | |
50c2f753 | 1704 | } |
1da177e4 | 1705 | |
4b8f930f | 1706 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 1707 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1708 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1709 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1710 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 1711 | |
50c2f753 | 1712 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1713 | since file handle passed in no longer valid */ |
1714 | ||
1715 | return rc; | |
1716 | } | |
d6e04ae6 SF |
1717 | |
1718 | ||
1da177e4 LT |
1719 | int |
1720 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1721 | const __u16 smb_file_id, const __u64 len, | |
1722 | const __u64 offset, const __u32 numUnlock, | |
4b18f2a9 | 1723 | const __u32 numLock, const __u8 lockType, const bool waitFlag) |
1da177e4 LT |
1724 | { |
1725 | int rc = 0; | |
1726 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1727 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
1728 | int bytes_returned; |
1729 | int timeout = 0; | |
1730 | __u16 count; | |
1731 | ||
4b18f2a9 | 1732 | cFYI(1, ("CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock)); |
46810cbf SF |
1733 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1734 | ||
1da177e4 LT |
1735 | if (rc) |
1736 | return rc; | |
1737 | ||
790fe579 | 1738 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 1739 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 1740 | pSMB->Timeout = 0; |
4b18f2a9 | 1741 | } else if (waitFlag) { |
133672ef | 1742 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1743 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1744 | } else { | |
1745 | pSMB->Timeout = 0; | |
1746 | } | |
1747 | ||
1748 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1749 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1750 | pSMB->LockType = lockType; | |
1751 | pSMB->AndXCommand = 0xFF; /* none */ | |
1752 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1753 | ||
790fe579 | 1754 | if ((numLock != 0) || (numUnlock != 0)) { |
1da177e4 LT |
1755 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); |
1756 | /* BB where to store pid high? */ | |
1757 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1758 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1759 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1760 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1761 | count = sizeof(LOCKING_ANDX_RANGE); | |
1762 | } else { | |
1763 | /* oplock break */ | |
1764 | count = 0; | |
1765 | } | |
1766 | pSMB->hdr.smb_buf_length += count; | |
1767 | pSMB->ByteCount = cpu_to_le16(count); | |
1768 | ||
7ee1af76 JA |
1769 | if (waitFlag) { |
1770 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 1771 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 1772 | cifs_small_buf_release(pSMB); |
7ee1af76 | 1773 | } else { |
133672ef SF |
1774 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, |
1775 | timeout); | |
1776 | /* SMB buffer freed by function above */ | |
7ee1af76 | 1777 | } |
a4544347 | 1778 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 1779 | if (rc) |
1da177e4 | 1780 | cFYI(1, ("Send error in Lock = %d", rc)); |
1da177e4 | 1781 | |
50c2f753 | 1782 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1783 | since file handle passed in no longer valid */ |
1784 | return rc; | |
1785 | } | |
1786 | ||
08547b03 SF |
1787 | int |
1788 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1789 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
50c2f753 | 1790 | struct file_lock *pLockData, const __u16 lock_type, |
4b18f2a9 | 1791 | const bool waitFlag) |
08547b03 SF |
1792 | { |
1793 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1794 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1795 | struct cifs_posix_lock *parm_data; |
1796 | int rc = 0; | |
3a5ff61c | 1797 | int timeout = 0; |
08547b03 | 1798 | int bytes_returned = 0; |
133672ef | 1799 | int resp_buf_type = 0; |
08547b03 | 1800 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1801 | struct kvec iov[1]; |
08547b03 SF |
1802 | |
1803 | cFYI(1, ("Posix Lock")); | |
fc94cdb9 | 1804 | |
790fe579 | 1805 | if (pLockData == NULL) |
ed5f0370 | 1806 | return -EINVAL; |
fc94cdb9 | 1807 | |
08547b03 SF |
1808 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1809 | ||
1810 | if (rc) | |
1811 | return rc; | |
1812 | ||
1813 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1814 | ||
50c2f753 | 1815 | params = 6; |
08547b03 SF |
1816 | pSMB->MaxSetupCount = 0; |
1817 | pSMB->Reserved = 0; | |
1818 | pSMB->Flags = 0; | |
08547b03 SF |
1819 | pSMB->Reserved2 = 0; |
1820 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1821 | offset = param_offset + params; | |
1822 | ||
08547b03 SF |
1823 | count = sizeof(struct cifs_posix_lock); |
1824 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 1825 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
1826 | pSMB->SetupCount = 1; |
1827 | pSMB->Reserved3 = 0; | |
790fe579 | 1828 | if (get_flag) |
08547b03 SF |
1829 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
1830 | else | |
1831 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1832 | byte_count = 3 /* pad */ + params + count; | |
1833 | pSMB->DataCount = cpu_to_le16(count); | |
1834 | pSMB->ParameterCount = cpu_to_le16(params); | |
1835 | pSMB->TotalDataCount = pSMB->DataCount; | |
1836 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1837 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 1838 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
1839 | (((char *) &pSMB->hdr.Protocol) + offset); |
1840 | ||
1841 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 1842 | if (waitFlag) { |
133672ef | 1843 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 1844 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
1845 | pSMB->Timeout = cpu_to_le32(-1); |
1846 | } else | |
1847 | pSMB->Timeout = 0; | |
1848 | ||
08547b03 | 1849 | parm_data->pid = cpu_to_le32(current->tgid); |
fc94cdb9 | 1850 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 1851 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
1852 | |
1853 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 1854 | pSMB->Fid = smb_file_id; |
08547b03 SF |
1855 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
1856 | pSMB->Reserved4 = 0; | |
1857 | pSMB->hdr.smb_buf_length += byte_count; | |
1858 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
7ee1af76 JA |
1859 | if (waitFlag) { |
1860 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1861 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1862 | } else { | |
133672ef SF |
1863 | iov[0].iov_base = (char *)pSMB; |
1864 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1865 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1866 | &resp_buf_type, timeout); | |
1867 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1868 | not try to free it twice below on exit */ | |
1869 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
1870 | } |
1871 | ||
08547b03 SF |
1872 | if (rc) { |
1873 | cFYI(1, ("Send error in Posix Lock = %d", rc)); | |
fc94cdb9 SF |
1874 | } else if (get_flag) { |
1875 | /* lock structure can be returned on get */ | |
1876 | __u16 data_offset; | |
1877 | __u16 data_count; | |
1878 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1879 | ||
1880 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1881 | rc = -EIO; /* bad smb */ | |
1882 | goto plk_err_exit; | |
1883 | } | |
790fe579 | 1884 | if (pLockData == NULL) { |
fc94cdb9 SF |
1885 | rc = -EINVAL; |
1886 | goto plk_err_exit; | |
1887 | } | |
1888 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1889 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 1890 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
1891 | rc = -EIO; |
1892 | goto plk_err_exit; | |
1893 | } | |
1894 | parm_data = (struct cifs_posix_lock *) | |
1895 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
790fe579 | 1896 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 1897 | pLockData->fl_type = F_UNLCK; |
08547b03 | 1898 | } |
50c2f753 | 1899 | |
fc94cdb9 | 1900 | plk_err_exit: |
08547b03 SF |
1901 | if (pSMB) |
1902 | cifs_small_buf_release(pSMB); | |
1903 | ||
133672ef SF |
1904 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
1905 | cifs_small_buf_release(iov[0].iov_base); | |
1906 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1907 | cifs_buf_release(iov[0].iov_base); | |
1908 | ||
08547b03 SF |
1909 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1910 | since file handle passed in no longer valid */ | |
1911 | ||
1912 | return rc; | |
1913 | } | |
1914 | ||
1915 | ||
1da177e4 LT |
1916 | int |
1917 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1918 | { | |
1919 | int rc = 0; | |
1920 | CLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
1921 | cFYI(1, ("In CIFSSMBClose")); |
1922 | ||
1923 | /* do not retry on dead session on close */ | |
1924 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 1925 | if (rc == -EAGAIN) |
1da177e4 LT |
1926 | return 0; |
1927 | if (rc) | |
1928 | return rc; | |
1929 | ||
1da177e4 | 1930 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 1931 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 1932 | pSMB->ByteCount = 0; |
133672ef | 1933 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
a4544347 | 1934 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 1935 | if (rc) { |
790fe579 | 1936 | if (rc != -EINTR) { |
1da177e4 LT |
1937 | /* EINTR is expected when user ctl-c to kill app */ |
1938 | cERROR(1, ("Send error in Close = %d", rc)); | |
1939 | } | |
1940 | } | |
1941 | ||
1da177e4 | 1942 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 1943 | if (rc == -EAGAIN) |
1da177e4 LT |
1944 | rc = 0; |
1945 | ||
1946 | return rc; | |
1947 | } | |
1948 | ||
1949 | int | |
1950 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1951 | const char *fromName, const char *toName, | |
737b758c | 1952 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1953 | { |
1954 | int rc = 0; | |
1955 | RENAME_REQ *pSMB = NULL; | |
1956 | RENAME_RSP *pSMBr = NULL; | |
1957 | int bytes_returned; | |
1958 | int name_len, name_len2; | |
1959 | __u16 count; | |
1960 | ||
1961 | cFYI(1, ("In CIFSSMBRename")); | |
1962 | renameRetry: | |
1963 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1964 | (void **) &pSMBr); | |
1965 | if (rc) | |
1966 | return rc; | |
1967 | ||
1968 | pSMB->BufferFormat = 0x04; | |
1969 | pSMB->SearchAttributes = | |
1970 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1971 | ATTR_DIRECTORY); | |
1972 | ||
1973 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1974 | name_len = | |
50c2f753 | 1975 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 1976 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1977 | name_len++; /* trailing null */ |
1978 | name_len *= 2; | |
1979 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1980 | /* protocol requires ASCII signature byte on Unicode string */ | |
1981 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1982 | name_len2 = | |
582d21e5 | 1983 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 1984 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
1985 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
1986 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 1987 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
1988 | name_len = strnlen(fromName, PATH_MAX); |
1989 | name_len++; /* trailing null */ | |
1990 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1991 | name_len2 = strnlen(toName, PATH_MAX); | |
1992 | name_len2++; /* trailing null */ | |
1993 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1994 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1995 | name_len2++; /* trailing null */ | |
1996 | name_len2++; /* signature byte */ | |
1997 | } | |
1998 | ||
1999 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2000 | pSMB->hdr.smb_buf_length += count; | |
2001 | pSMB->ByteCount = cpu_to_le16(count); | |
2002 | ||
2003 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2004 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2005 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2006 | if (rc) |
1da177e4 | 2007 | cFYI(1, ("Send error in rename = %d", rc)); |
1da177e4 | 2008 | |
1da177e4 LT |
2009 | cifs_buf_release(pSMB); |
2010 | ||
2011 | if (rc == -EAGAIN) | |
2012 | goto renameRetry; | |
2013 | ||
2014 | return rc; | |
2015 | } | |
2016 | ||
50c2f753 | 2017 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, |
391e5755 | 2018 | int netfid, const char *target_name, |
50c2f753 | 2019 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2020 | { |
2021 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2022 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2023 | struct set_file_rename *rename_info; |
1da177e4 LT |
2024 | char *data_offset; |
2025 | char dummy_string[30]; | |
2026 | int rc = 0; | |
2027 | int bytes_returned = 0; | |
2028 | int len_of_str; | |
2029 | __u16 params, param_offset, offset, count, byte_count; | |
2030 | ||
2031 | cFYI(1, ("Rename to File by handle")); | |
2032 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
2033 | (void **) &pSMBr); | |
2034 | if (rc) | |
2035 | return rc; | |
2036 | ||
2037 | params = 6; | |
2038 | pSMB->MaxSetupCount = 0; | |
2039 | pSMB->Reserved = 0; | |
2040 | pSMB->Flags = 0; | |
2041 | pSMB->Timeout = 0; | |
2042 | pSMB->Reserved2 = 0; | |
2043 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2044 | offset = param_offset + params; | |
2045 | ||
2046 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2047 | rename_info = (struct set_file_rename *) data_offset; | |
2048 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2049 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2050 | pSMB->SetupCount = 1; |
2051 | pSMB->Reserved3 = 0; | |
2052 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2053 | byte_count = 3 /* pad */ + params; | |
2054 | pSMB->ParameterCount = cpu_to_le16(params); | |
2055 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2056 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2057 | pSMB->DataOffset = cpu_to_le16(offset); | |
2058 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2059 | rename_info->overwrite = cpu_to_le32(1); | |
2060 | rename_info->root_fid = 0; | |
2061 | /* unicode only call */ | |
790fe579 | 2062 | if (target_name == NULL) { |
50c2f753 SF |
2063 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
2064 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
737b758c | 2065 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2066 | } else { |
b1a45695 | 2067 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, |
50c2f753 SF |
2068 | target_name, PATH_MAX, nls_codepage, |
2069 | remap); | |
1da177e4 LT |
2070 | } |
2071 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2072 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2073 | byte_count += count; |
2074 | pSMB->DataCount = cpu_to_le16(count); | |
2075 | pSMB->TotalDataCount = pSMB->DataCount; | |
2076 | pSMB->Fid = netfid; | |
2077 | pSMB->InformationLevel = | |
2078 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2079 | pSMB->Reserved4 = 0; | |
2080 | pSMB->hdr.smb_buf_length += byte_count; | |
2081 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2082 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2083 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2084 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2085 | if (rc) |
790fe579 | 2086 | cFYI(1, ("Send error in Rename (by file handle) = %d", rc)); |
a5a2b489 | 2087 | |
1da177e4 LT |
2088 | cifs_buf_release(pSMB); |
2089 | ||
2090 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2091 | since file handle passed in no longer valid */ | |
2092 | ||
2093 | return rc; | |
2094 | } | |
2095 | ||
2096 | int | |
50c2f753 SF |
2097 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, |
2098 | const __u16 target_tid, const char *toName, const int flags, | |
2099 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2100 | { |
2101 | int rc = 0; | |
2102 | COPY_REQ *pSMB = NULL; | |
2103 | COPY_RSP *pSMBr = NULL; | |
2104 | int bytes_returned; | |
2105 | int name_len, name_len2; | |
2106 | __u16 count; | |
2107 | ||
2108 | cFYI(1, ("In CIFSSMBCopy")); | |
2109 | copyRetry: | |
2110 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2111 | (void **) &pSMBr); | |
2112 | if (rc) | |
2113 | return rc; | |
2114 | ||
2115 | pSMB->BufferFormat = 0x04; | |
2116 | pSMB->Tid2 = target_tid; | |
2117 | ||
2118 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2119 | ||
2120 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
50c2f753 | 2121 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, |
737b758c SF |
2122 | fromName, PATH_MAX, nls_codepage, |
2123 | remap); | |
1da177e4 LT |
2124 | name_len++; /* trailing null */ |
2125 | name_len *= 2; | |
2126 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2127 | /* protocol requires ASCII signature byte on Unicode string */ | |
2128 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 SF |
2129 | name_len2 = |
2130 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
737b758c | 2131 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2132 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2133 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2134 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2135 | name_len = strnlen(fromName, PATH_MAX); |
2136 | name_len++; /* trailing null */ | |
2137 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2138 | name_len2 = strnlen(toName, PATH_MAX); | |
2139 | name_len2++; /* trailing null */ | |
2140 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2141 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2142 | name_len2++; /* trailing null */ | |
2143 | name_len2++; /* signature byte */ | |
2144 | } | |
2145 | ||
2146 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2147 | pSMB->hdr.smb_buf_length += count; | |
2148 | pSMB->ByteCount = cpu_to_le16(count); | |
2149 | ||
2150 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2151 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2152 | if (rc) { | |
2153 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
2154 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
2155 | } | |
0d817bc0 | 2156 | cifs_buf_release(pSMB); |
1da177e4 LT |
2157 | |
2158 | if (rc == -EAGAIN) | |
2159 | goto copyRetry; | |
2160 | ||
2161 | return rc; | |
2162 | } | |
2163 | ||
2164 | int | |
2165 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2166 | const char *fromName, const char *toName, | |
2167 | const struct nls_table *nls_codepage) | |
2168 | { | |
2169 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2170 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2171 | char *data_offset; | |
2172 | int name_len; | |
2173 | int name_len_target; | |
2174 | int rc = 0; | |
2175 | int bytes_returned = 0; | |
2176 | __u16 params, param_offset, offset, byte_count; | |
2177 | ||
2178 | cFYI(1, ("In Symlink Unix style")); | |
2179 | createSymLinkRetry: | |
2180 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2181 | (void **) &pSMBr); | |
2182 | if (rc) | |
2183 | return rc; | |
2184 | ||
2185 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2186 | name_len = | |
e89dc920 | 2187 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX |
1da177e4 LT |
2188 | /* find define for this maxpathcomponent */ |
2189 | , nls_codepage); | |
2190 | name_len++; /* trailing null */ | |
2191 | name_len *= 2; | |
2192 | ||
50c2f753 | 2193 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2194 | name_len = strnlen(fromName, PATH_MAX); |
2195 | name_len++; /* trailing null */ | |
2196 | strncpy(pSMB->FileName, fromName, name_len); | |
2197 | } | |
2198 | params = 6 + name_len; | |
2199 | pSMB->MaxSetupCount = 0; | |
2200 | pSMB->Reserved = 0; | |
2201 | pSMB->Flags = 0; | |
2202 | pSMB->Timeout = 0; | |
2203 | pSMB->Reserved2 = 0; | |
2204 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2205 | InformationLevel) - 4; |
1da177e4 LT |
2206 | offset = param_offset + params; |
2207 | ||
2208 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2209 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2210 | name_len_target = | |
e89dc920 | 2211 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX |
1da177e4 LT |
2212 | /* find define for this maxpathcomponent */ |
2213 | , nls_codepage); | |
2214 | name_len_target++; /* trailing null */ | |
2215 | name_len_target *= 2; | |
50c2f753 | 2216 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2217 | name_len_target = strnlen(toName, PATH_MAX); |
2218 | name_len_target++; /* trailing null */ | |
2219 | strncpy(data_offset, toName, name_len_target); | |
2220 | } | |
2221 | ||
2222 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2223 | /* BB find exact max on data count below from sess */ | |
2224 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2225 | pSMB->SetupCount = 1; | |
2226 | pSMB->Reserved3 = 0; | |
2227 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2228 | byte_count = 3 /* pad */ + params + name_len_target; | |
2229 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2230 | pSMB->ParameterCount = cpu_to_le16(params); | |
2231 | pSMB->TotalDataCount = pSMB->DataCount; | |
2232 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2233 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2234 | pSMB->DataOffset = cpu_to_le16(offset); | |
2235 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2236 | pSMB->Reserved4 = 0; | |
2237 | pSMB->hdr.smb_buf_length += byte_count; | |
2238 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2239 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2240 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2241 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2242 | if (rc) |
2d785a50 | 2243 | cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc)); |
1da177e4 | 2244 | |
0d817bc0 | 2245 | cifs_buf_release(pSMB); |
1da177e4 LT |
2246 | |
2247 | if (rc == -EAGAIN) | |
2248 | goto createSymLinkRetry; | |
2249 | ||
2250 | return rc; | |
2251 | } | |
2252 | ||
2253 | int | |
2254 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2255 | const char *fromName, const char *toName, | |
737b758c | 2256 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2257 | { |
2258 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2259 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2260 | char *data_offset; | |
2261 | int name_len; | |
2262 | int name_len_target; | |
2263 | int rc = 0; | |
2264 | int bytes_returned = 0; | |
2265 | __u16 params, param_offset, offset, byte_count; | |
2266 | ||
2267 | cFYI(1, ("In Create Hard link Unix style")); | |
2268 | createHardLinkRetry: | |
2269 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2270 | (void **) &pSMBr); | |
2271 | if (rc) | |
2272 | return rc; | |
2273 | ||
2274 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
b1a45695 | 2275 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, |
737b758c | 2276 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2277 | name_len++; /* trailing null */ |
2278 | name_len *= 2; | |
2279 | ||
50c2f753 | 2280 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2281 | name_len = strnlen(toName, PATH_MAX); |
2282 | name_len++; /* trailing null */ | |
2283 | strncpy(pSMB->FileName, toName, name_len); | |
2284 | } | |
2285 | params = 6 + name_len; | |
2286 | pSMB->MaxSetupCount = 0; | |
2287 | pSMB->Reserved = 0; | |
2288 | pSMB->Flags = 0; | |
2289 | pSMB->Timeout = 0; | |
2290 | pSMB->Reserved2 = 0; | |
2291 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2292 | InformationLevel) - 4; |
1da177e4 LT |
2293 | offset = param_offset + params; |
2294 | ||
2295 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2296 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2297 | name_len_target = | |
b1a45695 | 2298 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, |
737b758c | 2299 | nls_codepage, remap); |
1da177e4 LT |
2300 | name_len_target++; /* trailing null */ |
2301 | name_len_target *= 2; | |
50c2f753 | 2302 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2303 | name_len_target = strnlen(fromName, PATH_MAX); |
2304 | name_len_target++; /* trailing null */ | |
2305 | strncpy(data_offset, fromName, name_len_target); | |
2306 | } | |
2307 | ||
2308 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2309 | /* BB find exact max on data count below from sess*/ | |
2310 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2311 | pSMB->SetupCount = 1; | |
2312 | pSMB->Reserved3 = 0; | |
2313 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2314 | byte_count = 3 /* pad */ + params + name_len_target; | |
2315 | pSMB->ParameterCount = cpu_to_le16(params); | |
2316 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2317 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2318 | pSMB->TotalDataCount = pSMB->DataCount; | |
2319 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2320 | pSMB->DataOffset = cpu_to_le16(offset); | |
2321 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2322 | pSMB->Reserved4 = 0; | |
2323 | pSMB->hdr.smb_buf_length += byte_count; | |
2324 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2325 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2326 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2327 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2328 | if (rc) |
1da177e4 | 2329 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); |
1da177e4 LT |
2330 | |
2331 | cifs_buf_release(pSMB); | |
2332 | if (rc == -EAGAIN) | |
2333 | goto createHardLinkRetry; | |
2334 | ||
2335 | return rc; | |
2336 | } | |
2337 | ||
2338 | int | |
2339 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2340 | const char *fromName, const char *toName, | |
737b758c | 2341 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2342 | { |
2343 | int rc = 0; | |
2344 | NT_RENAME_REQ *pSMB = NULL; | |
2345 | RENAME_RSP *pSMBr = NULL; | |
2346 | int bytes_returned; | |
2347 | int name_len, name_len2; | |
2348 | __u16 count; | |
2349 | ||
2350 | cFYI(1, ("In CIFSCreateHardLink")); | |
2351 | winCreateHardLinkRetry: | |
2352 | ||
2353 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2354 | (void **) &pSMBr); | |
2355 | if (rc) | |
2356 | return rc; | |
2357 | ||
2358 | pSMB->SearchAttributes = | |
2359 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2360 | ATTR_DIRECTORY); | |
2361 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2362 | pSMB->ClusterCount = 0; | |
2363 | ||
2364 | pSMB->BufferFormat = 0x04; | |
2365 | ||
2366 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2367 | name_len = | |
b1a45695 | 2368 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, |
737b758c | 2369 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2370 | name_len++; /* trailing null */ |
2371 | name_len *= 2; | |
2372 | pSMB->OldFileName[name_len] = 0; /* pad */ | |
50c2f753 | 2373 | pSMB->OldFileName[name_len + 1] = 0x04; |
1da177e4 | 2374 | name_len2 = |
50c2f753 | 2375 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], |
737b758c | 2376 | toName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2377 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2378 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2379 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2380 | name_len = strnlen(fromName, PATH_MAX); |
2381 | name_len++; /* trailing null */ | |
2382 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2383 | name_len2 = strnlen(toName, PATH_MAX); | |
2384 | name_len2++; /* trailing null */ | |
2385 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2386 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2387 | name_len2++; /* trailing null */ | |
2388 | name_len2++; /* signature byte */ | |
2389 | } | |
2390 | ||
2391 | count = 1 /* string type byte */ + name_len + name_len2; | |
2392 | pSMB->hdr.smb_buf_length += count; | |
2393 | pSMB->ByteCount = cpu_to_le16(count); | |
2394 | ||
2395 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2396 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2397 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 2398 | if (rc) |
1da177e4 | 2399 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); |
ad7a2926 | 2400 | |
1da177e4 LT |
2401 | cifs_buf_release(pSMB); |
2402 | if (rc == -EAGAIN) | |
2403 | goto winCreateHardLinkRetry; | |
2404 | ||
2405 | return rc; | |
2406 | } | |
2407 | ||
2408 | int | |
2409 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
2410 | const unsigned char *searchName, | |
2411 | char *symlinkinfo, const int buflen, | |
2412 | const struct nls_table *nls_codepage) | |
2413 | { | |
2414 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2415 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2416 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2417 | int rc = 0; | |
2418 | int bytes_returned; | |
2419 | int name_len; | |
2420 | __u16 params, byte_count; | |
2421 | ||
2422 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
2423 | ||
2424 | querySymLinkRetry: | |
2425 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2426 | (void **) &pSMBr); | |
2427 | if (rc) | |
2428 | return rc; | |
2429 | ||
2430 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2431 | name_len = | |
50c2f753 SF |
2432 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, |
2433 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2434 | name_len++; /* trailing null */ |
2435 | name_len *= 2; | |
50c2f753 | 2436 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2437 | name_len = strnlen(searchName, PATH_MAX); |
2438 | name_len++; /* trailing null */ | |
2439 | strncpy(pSMB->FileName, searchName, name_len); | |
2440 | } | |
2441 | ||
2442 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2443 | pSMB->TotalDataCount = 0; | |
2444 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2445 | /* BB find exact max data count below from sess structure BB */ | |
2446 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2447 | pSMB->MaxSetupCount = 0; | |
2448 | pSMB->Reserved = 0; | |
2449 | pSMB->Flags = 0; | |
2450 | pSMB->Timeout = 0; | |
2451 | pSMB->Reserved2 = 0; | |
2452 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2453 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2454 | pSMB->DataCount = 0; |
2455 | pSMB->DataOffset = 0; | |
2456 | pSMB->SetupCount = 1; | |
2457 | pSMB->Reserved3 = 0; | |
2458 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2459 | byte_count = params + 1 /* pad */ ; | |
2460 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2461 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2462 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2463 | pSMB->Reserved4 = 0; | |
2464 | pSMB->hdr.smb_buf_length += byte_count; | |
2465 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2466 | ||
2467 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2468 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2469 | if (rc) { | |
2470 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
2471 | } else { | |
2472 | /* decode response */ | |
2473 | ||
2474 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2475 | if (rc || (pSMBr->ByteCount < 2)) | |
2476 | /* BB also check enough total bytes returned */ | |
2477 | rc = -EIO; /* bad smb */ | |
2478 | else { | |
2479 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2480 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2481 | ||
2482 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2483 | name_len = UniStrnlen((wchar_t *) ((char *) | |
50c2f753 SF |
2484 | &pSMBr->hdr.Protocol + data_offset), |
2485 | min_t(const int, buflen, count) / 2); | |
737b758c | 2486 | /* BB FIXME investigate remapping reserved chars here */ |
1da177e4 | 2487 | cifs_strfromUCS_le(symlinkinfo, |
50c2f753 SF |
2488 | (__le16 *) ((char *)&pSMBr->hdr.Protocol |
2489 | + data_offset), | |
1da177e4 LT |
2490 | name_len, nls_codepage); |
2491 | } else { | |
2492 | strncpy(symlinkinfo, | |
50c2f753 | 2493 | (char *) &pSMBr->hdr.Protocol + |
1da177e4 LT |
2494 | data_offset, |
2495 | min_t(const int, buflen, count)); | |
2496 | } | |
2497 | symlinkinfo[buflen] = 0; | |
2498 | /* just in case so calling code does not go off the end of buffer */ | |
2499 | } | |
2500 | } | |
2501 | cifs_buf_release(pSMB); | |
2502 | if (rc == -EAGAIN) | |
2503 | goto querySymLinkRetry; | |
2504 | return rc; | |
2505 | } | |
2506 | ||
c9489779 | 2507 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
2508 | /* Initialize NT TRANSACT SMB into small smb request buffer. |
2509 | This assumes that all NT TRANSACTS that we init here have | |
2510 | total parm and data under about 400 bytes (to fit in small cifs | |
2511 | buffer size), which is the case so far, it easily fits. NB: | |
2512 | Setup words themselves and ByteCount | |
2513 | MaxSetupCount (size of returned setup area) and | |
2514 | MaxParameterCount (returned parms size) must be set by caller */ | |
50c2f753 | 2515 | static int |
b9c7a2bb | 2516 | smb_init_nttransact(const __u16 sub_command, const int setup_count, |
0a4b92c0 | 2517 | const int parm_len, struct cifsTconInfo *tcon, |
50c2f753 | 2518 | void **ret_buf) |
0a4b92c0 SF |
2519 | { |
2520 | int rc; | |
2521 | __u32 temp_offset; | |
50c2f753 | 2522 | struct smb_com_ntransact_req *pSMB; |
0a4b92c0 SF |
2523 | |
2524 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2525 | (void **)&pSMB); | |
2526 | if (rc) | |
2527 | return rc; | |
2528 | *ret_buf = (void *)pSMB; | |
2529 | pSMB->Reserved = 0; | |
2530 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2531 | pSMB->TotalDataCount = 0; | |
2532 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2533 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2534 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2535 | pSMB->DataCount = pSMB->TotalDataCount; | |
2536 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2537 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2538 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2539 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2540 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2541 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2542 | return 0; | |
2543 | } | |
2544 | ||
2545 | static int | |
50c2f753 | 2546 | validate_ntransact(char *buf, char **ppparm, char **ppdata, |
b9c7a2bb | 2547 | __u32 *pparmlen, __u32 *pdatalen) |
0a4b92c0 | 2548 | { |
50c2f753 | 2549 | char *end_of_smb; |
0a4b92c0 | 2550 | __u32 data_count, data_offset, parm_count, parm_offset; |
50c2f753 | 2551 | struct smb_com_ntransact_rsp *pSMBr; |
0a4b92c0 | 2552 | |
630f3f0c SF |
2553 | *pdatalen = 0; |
2554 | *pparmlen = 0; | |
2555 | ||
790fe579 | 2556 | if (buf == NULL) |
0a4b92c0 SF |
2557 | return -EINVAL; |
2558 | ||
2559 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2560 | ||
2561 | /* ByteCount was converted from little endian in SendReceive */ | |
50c2f753 | 2562 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + |
0a4b92c0 SF |
2563 | (char *)&pSMBr->ByteCount; |
2564 | ||
0a4b92c0 SF |
2565 | data_offset = le32_to_cpu(pSMBr->DataOffset); |
2566 | data_count = le32_to_cpu(pSMBr->DataCount); | |
50c2f753 | 2567 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
0a4b92c0 SF |
2568 | parm_count = le32_to_cpu(pSMBr->ParameterCount); |
2569 | ||
2570 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2571 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2572 | ||
2573 | /* should we also check that parm and data areas do not overlap? */ | |
790fe579 SF |
2574 | if (*ppparm > end_of_smb) { |
2575 | cFYI(1, ("parms start after end of smb")); | |
0a4b92c0 | 2576 | return -EINVAL; |
790fe579 SF |
2577 | } else if (parm_count + *ppparm > end_of_smb) { |
2578 | cFYI(1, ("parm end after end of smb")); | |
0a4b92c0 | 2579 | return -EINVAL; |
790fe579 SF |
2580 | } else if (*ppdata > end_of_smb) { |
2581 | cFYI(1, ("data starts after end of smb")); | |
0a4b92c0 | 2582 | return -EINVAL; |
790fe579 | 2583 | } else if (data_count + *ppdata > end_of_smb) { |
26f57364 | 2584 | cFYI(1, ("data %p + count %d (%p) ends after end of smb %p start %p", |
50c2f753 SF |
2585 | *ppdata, data_count, (data_count + *ppdata), |
2586 | end_of_smb, pSMBr)); | |
0a4b92c0 | 2587 | return -EINVAL; |
790fe579 SF |
2588 | } else if (parm_count + data_count > pSMBr->ByteCount) { |
2589 | cFYI(1, ("parm count and data count larger than SMB")); | |
0a4b92c0 SF |
2590 | return -EINVAL; |
2591 | } | |
630f3f0c SF |
2592 | *pdatalen = data_count; |
2593 | *pparmlen = parm_count; | |
0a4b92c0 SF |
2594 | return 0; |
2595 | } | |
c9489779 | 2596 | #endif /* CIFS_EXPERIMENTAL */ |
0a4b92c0 | 2597 | |
1da177e4 LT |
2598 | int |
2599 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2600 | const unsigned char *searchName, | |
50c2f753 | 2601 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
2602 | const struct nls_table *nls_codepage) |
2603 | { | |
2604 | int rc = 0; | |
2605 | int bytes_returned; | |
2606 | int name_len; | |
50c2f753 SF |
2607 | struct smb_com_transaction_ioctl_req *pSMB; |
2608 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 LT |
2609 | |
2610 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
2611 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2612 | (void **) &pSMBr); | |
2613 | if (rc) | |
2614 | return rc; | |
2615 | ||
2616 | pSMB->TotalParameterCount = 0 ; | |
2617 | pSMB->TotalDataCount = 0; | |
2618 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2619 | /* BB find exact data count max from sess structure BB */ | |
0a4b92c0 SF |
2620 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - |
2621 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
1da177e4 LT |
2622 | pSMB->MaxSetupCount = 4; |
2623 | pSMB->Reserved = 0; | |
2624 | pSMB->ParameterOffset = 0; | |
2625 | pSMB->DataCount = 0; | |
2626 | pSMB->DataOffset = 0; | |
2627 | pSMB->SetupCount = 4; | |
2628 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2629 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2630 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2631 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2632 | pSMB->IsRootFlag = 0; | |
2633 | pSMB->Fid = fid; /* file handle always le */ | |
2634 | pSMB->ByteCount = 0; | |
2635 | ||
2636 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2637 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2638 | if (rc) { | |
2639 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
2640 | } else { /* decode response */ | |
2641 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2642 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
2643 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) | |
2644 | /* BB also check enough total bytes returned */ | |
2645 | rc = -EIO; /* bad smb */ | |
2646 | else { | |
790fe579 | 2647 | if (data_count && (data_count < 2048)) { |
50c2f753 | 2648 | char *end_of_smb = 2 /* sizeof byte count */ + |
0a4b92c0 SF |
2649 | pSMBr->ByteCount + |
2650 | (char *)&pSMBr->ByteCount; | |
1da177e4 | 2651 | |
50c2f753 SF |
2652 | struct reparse_data *reparse_buf = |
2653 | (struct reparse_data *) | |
2654 | ((char *)&pSMBr->hdr.Protocol | |
2655 | + data_offset); | |
790fe579 | 2656 | if ((char *)reparse_buf >= end_of_smb) { |
1da177e4 LT |
2657 | rc = -EIO; |
2658 | goto qreparse_out; | |
2659 | } | |
790fe579 | 2660 | if ((reparse_buf->LinkNamesBuf + |
1da177e4 LT |
2661 | reparse_buf->TargetNameOffset + |
2662 | reparse_buf->TargetNameLen) > | |
2663 | end_of_smb) { | |
26f57364 | 2664 | cFYI(1, ("reparse buf beyond SMB")); |
1da177e4 LT |
2665 | rc = -EIO; |
2666 | goto qreparse_out; | |
2667 | } | |
50c2f753 | 2668 | |
1da177e4 LT |
2669 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
2670 | name_len = UniStrnlen((wchar_t *) | |
50c2f753 SF |
2671 | (reparse_buf->LinkNamesBuf + |
2672 | reparse_buf->TargetNameOffset), | |
2673 | min(buflen/2, | |
2674 | reparse_buf->TargetNameLen / 2)); | |
1da177e4 | 2675 | cifs_strfromUCS_le(symlinkinfo, |
50c2f753 | 2676 | (__le16 *) (reparse_buf->LinkNamesBuf + |
1da177e4 LT |
2677 | reparse_buf->TargetNameOffset), |
2678 | name_len, nls_codepage); | |
2679 | } else { /* ASCII names */ | |
50c2f753 SF |
2680 | strncpy(symlinkinfo, |
2681 | reparse_buf->LinkNamesBuf + | |
2682 | reparse_buf->TargetNameOffset, | |
2683 | min_t(const int, buflen, | |
2684 | reparse_buf->TargetNameLen)); | |
1da177e4 LT |
2685 | } |
2686 | } else { | |
2687 | rc = -EIO; | |
63135e08 SF |
2688 | cFYI(1, ("Invalid return data count on " |
2689 | "get reparse info ioctl")); | |
1da177e4 LT |
2690 | } |
2691 | symlinkinfo[buflen] = 0; /* just in case so the caller | |
2692 | does not go off the end of the buffer */ | |
50c2f753 | 2693 | cFYI(1, ("readlink result - %s", symlinkinfo)); |
1da177e4 LT |
2694 | } |
2695 | } | |
2696 | qreparse_out: | |
4a6d87f1 | 2697 | cifs_buf_release(pSMB); |
1da177e4 LT |
2698 | |
2699 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2700 | since file handle passed in no longer valid */ | |
2701 | ||
2702 | return rc; | |
2703 | } | |
2704 | ||
2705 | #ifdef CONFIG_CIFS_POSIX | |
2706 | ||
2707 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
2708 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
2709 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
2710 | { |
2711 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
2712 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
2713 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2714 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
1da177e4 LT |
2715 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ |
2716 | ||
2717 | return; | |
2718 | } | |
2719 | ||
2720 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
2721 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
2722 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
2723 | { |
2724 | int size = 0; | |
2725 | int i; | |
2726 | __u16 count; | |
50c2f753 SF |
2727 | struct cifs_posix_ace *pACE; |
2728 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2729 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
2730 | |
2731 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2732 | return -EOPNOTSUPP; | |
2733 | ||
790fe579 | 2734 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
2735 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2736 | pACE = &cifs_acl->ace_array[0]; | |
2737 | size = sizeof(struct cifs_posix_acl); | |
2738 | size += sizeof(struct cifs_posix_ace) * count; | |
2739 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2740 | if (size_of_data_area < size) { |
50c2f753 SF |
2741 | cFYI(1, ("bad CIFS POSIX ACL size %d vs. %d", |
2742 | size_of_data_area, size)); | |
1da177e4 LT |
2743 | return -EINVAL; |
2744 | } | |
790fe579 | 2745 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
2746 | count = le16_to_cpu(cifs_acl->access_entry_count); |
2747 | size = sizeof(struct cifs_posix_acl); | |
2748 | size += sizeof(struct cifs_posix_ace) * count; | |
2749 | /* skip past access ACEs to get to default ACEs */ | |
2750 | pACE = &cifs_acl->ace_array[count]; | |
2751 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2752 | size += sizeof(struct cifs_posix_ace) * count; | |
2753 | /* check if we would go beyond end of SMB */ | |
790fe579 | 2754 | if (size_of_data_area < size) |
1da177e4 LT |
2755 | return -EINVAL; |
2756 | } else { | |
2757 | /* illegal type */ | |
2758 | return -EINVAL; | |
2759 | } | |
2760 | ||
2761 | size = posix_acl_xattr_size(count); | |
790fe579 | 2762 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 2763 | /* used to query ACL EA size */ |
790fe579 | 2764 | } else if (size > buflen) { |
1da177e4 LT |
2765 | return -ERANGE; |
2766 | } else /* buffer big enough */ { | |
ff7feac9 | 2767 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
2768 | for (i = 0; i < count ; i++) { |
2769 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2770 | pACE++; | |
1da177e4 LT |
2771 | } |
2772 | } | |
2773 | return size; | |
2774 | } | |
2775 | ||
50c2f753 SF |
2776 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
2777 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
2778 | { |
2779 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2780 | ||
ff7feac9 SF |
2781 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
2782 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 2783 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 2784 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
2785 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
2786 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 2787 | } else |
ff7feac9 | 2788 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
50c2f753 | 2789 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ |
1da177e4 LT |
2790 | return rc; |
2791 | } | |
2792 | ||
2793 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
2794 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
2795 | const int buflen, const int acl_type) | |
1da177e4 LT |
2796 | { |
2797 | __u16 rc = 0; | |
50c2f753 SF |
2798 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
2799 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
2800 | int count; |
2801 | int i; | |
2802 | ||
790fe579 | 2803 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
2804 | return 0; |
2805 | ||
2806 | count = posix_acl_xattr_count((size_t)buflen); | |
c18c842b | 2807 | cFYI(1, ("setting acl with %d entries from buf of length %d and " |
63135e08 | 2808 | "version of %d", |
ff7feac9 | 2809 | count, buflen, le32_to_cpu(local_acl->a_version))); |
790fe579 | 2810 | if (le32_to_cpu(local_acl->a_version) != 2) { |
50c2f753 | 2811 | cFYI(1, ("unknown POSIX ACL version %d", |
ff7feac9 | 2812 | le32_to_cpu(local_acl->a_version))); |
1da177e4 LT |
2813 | return 0; |
2814 | } | |
2815 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 2816 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 2817 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 2818 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 2819 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 2820 | else { |
50c2f753 | 2821 | cFYI(1, ("unknown ACL type %d", acl_type)); |
1da177e4 LT |
2822 | return 0; |
2823 | } | |
50c2f753 | 2824 | for (i = 0; i < count; i++) { |
1da177e4 LT |
2825 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
2826 | &local_acl->a_entries[i]); | |
790fe579 | 2827 | if (rc != 0) { |
1da177e4 LT |
2828 | /* ACE not converted */ |
2829 | break; | |
2830 | } | |
2831 | } | |
790fe579 | 2832 | if (rc == 0) { |
1da177e4 LT |
2833 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
2834 | rc += sizeof(struct cifs_posix_acl); | |
2835 | /* BB add check to make sure ACL does not overflow SMB */ | |
2836 | } | |
2837 | return rc; | |
2838 | } | |
2839 | ||
2840 | int | |
2841 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2842 | const unsigned char *searchName, |
2843 | char *acl_inf, const int buflen, const int acl_type, | |
2844 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2845 | { |
2846 | /* SMB_QUERY_POSIX_ACL */ | |
2847 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2848 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2849 | int rc = 0; | |
2850 | int bytes_returned; | |
2851 | int name_len; | |
2852 | __u16 params, byte_count; | |
50c2f753 | 2853 | |
1da177e4 LT |
2854 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); |
2855 | ||
2856 | queryAclRetry: | |
2857 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2858 | (void **) &pSMBr); | |
2859 | if (rc) | |
2860 | return rc; | |
50c2f753 | 2861 | |
1da177e4 LT |
2862 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2863 | name_len = | |
50c2f753 | 2864 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 2865 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2866 | name_len++; /* trailing null */ |
2867 | name_len *= 2; | |
2868 | pSMB->FileName[name_len] = 0; | |
2869 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 2870 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2871 | name_len = strnlen(searchName, PATH_MAX); |
2872 | name_len++; /* trailing null */ | |
2873 | strncpy(pSMB->FileName, searchName, name_len); | |
2874 | } | |
2875 | ||
2876 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2877 | pSMB->TotalDataCount = 0; | |
2878 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 2879 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
2880 | pSMB->MaxDataCount = cpu_to_le16(4000); |
2881 | pSMB->MaxSetupCount = 0; | |
2882 | pSMB->Reserved = 0; | |
2883 | pSMB->Flags = 0; | |
2884 | pSMB->Timeout = 0; | |
2885 | pSMB->Reserved2 = 0; | |
2886 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
2887 | offsetof(struct smb_com_transaction2_qpi_req, |
2888 | InformationLevel) - 4); | |
1da177e4 LT |
2889 | pSMB->DataCount = 0; |
2890 | pSMB->DataOffset = 0; | |
2891 | pSMB->SetupCount = 1; | |
2892 | pSMB->Reserved3 = 0; | |
2893 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2894 | byte_count = params + 1 /* pad */ ; | |
2895 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2896 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2897 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2898 | pSMB->Reserved4 = 0; | |
2899 | pSMB->hdr.smb_buf_length += byte_count; | |
2900 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2901 | ||
2902 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2903 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 2904 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 LT |
2905 | if (rc) { |
2906 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
2907 | } else { | |
2908 | /* decode response */ | |
50c2f753 | 2909 | |
1da177e4 LT |
2910 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
2911 | if (rc || (pSMBr->ByteCount < 2)) | |
2912 | /* BB also check enough total bytes returned */ | |
2913 | rc = -EIO; /* bad smb */ | |
2914 | else { | |
2915 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2916 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2917 | rc = cifs_copy_posix_acl(acl_inf, | |
2918 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 2919 | buflen, acl_type, count); |
1da177e4 LT |
2920 | } |
2921 | } | |
2922 | cifs_buf_release(pSMB); | |
2923 | if (rc == -EAGAIN) | |
2924 | goto queryAclRetry; | |
2925 | return rc; | |
2926 | } | |
2927 | ||
2928 | int | |
2929 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
2930 | const unsigned char *fileName, |
2931 | const char *local_acl, const int buflen, | |
2932 | const int acl_type, | |
2933 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2934 | { |
2935 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2936 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2937 | char *parm_data; | |
2938 | int name_len; | |
2939 | int rc = 0; | |
2940 | int bytes_returned = 0; | |
2941 | __u16 params, byte_count, data_count, param_offset, offset; | |
2942 | ||
2943 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2944 | setAclRetry: | |
2945 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 2946 | (void **) &pSMBr); |
1da177e4 LT |
2947 | if (rc) |
2948 | return rc; | |
2949 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2950 | name_len = | |
50c2f753 | 2951 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 2952 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
2953 | name_len++; /* trailing null */ |
2954 | name_len *= 2; | |
50c2f753 | 2955 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2956 | name_len = strnlen(fileName, PATH_MAX); |
2957 | name_len++; /* trailing null */ | |
2958 | strncpy(pSMB->FileName, fileName, name_len); | |
2959 | } | |
2960 | params = 6 + name_len; | |
2961 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
2962 | /* BB find max SMB size from sess */ |
2963 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
2964 | pSMB->MaxSetupCount = 0; |
2965 | pSMB->Reserved = 0; | |
2966 | pSMB->Flags = 0; | |
2967 | pSMB->Timeout = 0; | |
2968 | pSMB->Reserved2 = 0; | |
2969 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2970 | InformationLevel) - 4; |
1da177e4 LT |
2971 | offset = param_offset + params; |
2972 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2973 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2974 | ||
2975 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 2976 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 2977 | |
790fe579 | 2978 | if (data_count == 0) { |
1da177e4 LT |
2979 | rc = -EOPNOTSUPP; |
2980 | goto setACLerrorExit; | |
2981 | } | |
2982 | pSMB->DataOffset = cpu_to_le16(offset); | |
2983 | pSMB->SetupCount = 1; | |
2984 | pSMB->Reserved3 = 0; | |
2985 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2986 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2987 | byte_count = 3 /* pad */ + params + data_count; | |
2988 | pSMB->DataCount = cpu_to_le16(data_count); | |
2989 | pSMB->TotalDataCount = pSMB->DataCount; | |
2990 | pSMB->ParameterCount = cpu_to_le16(params); | |
2991 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2992 | pSMB->Reserved4 = 0; | |
2993 | pSMB->hdr.smb_buf_length += byte_count; | |
2994 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2995 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2996 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 2997 | if (rc) |
1da177e4 | 2998 | cFYI(1, ("Set POSIX ACL returned %d", rc)); |
1da177e4 LT |
2999 | |
3000 | setACLerrorExit: | |
3001 | cifs_buf_release(pSMB); | |
3002 | if (rc == -EAGAIN) | |
3003 | goto setAclRetry; | |
3004 | return rc; | |
3005 | } | |
3006 | ||
f654bac2 SF |
3007 | /* BB fix tabs in this function FIXME BB */ |
3008 | int | |
3009 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
ad7a2926 | 3010 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3011 | { |
50c2f753 SF |
3012 | int rc = 0; |
3013 | struct smb_t2_qfi_req *pSMB = NULL; | |
3014 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3015 | int bytes_returned; | |
3016 | __u16 params, byte_count; | |
f654bac2 | 3017 | |
790fe579 SF |
3018 | cFYI(1, ("In GetExtAttr")); |
3019 | if (tcon == NULL) | |
3020 | return -ENODEV; | |
f654bac2 SF |
3021 | |
3022 | GetExtAttrRetry: | |
790fe579 SF |
3023 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3024 | (void **) &pSMBr); | |
3025 | if (rc) | |
3026 | return rc; | |
f654bac2 | 3027 | |
ad7a2926 | 3028 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3029 | pSMB->t2.TotalDataCount = 0; |
3030 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3031 | /* BB find exact max data count below from sess structure BB */ | |
3032 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3033 | pSMB->t2.MaxSetupCount = 0; | |
3034 | pSMB->t2.Reserved = 0; | |
3035 | pSMB->t2.Flags = 0; | |
3036 | pSMB->t2.Timeout = 0; | |
3037 | pSMB->t2.Reserved2 = 0; | |
3038 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3039 | Fid) - 4); | |
3040 | pSMB->t2.DataCount = 0; | |
3041 | pSMB->t2.DataOffset = 0; | |
3042 | pSMB->t2.SetupCount = 1; | |
3043 | pSMB->t2.Reserved3 = 0; | |
3044 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3045 | byte_count = params + 1 /* pad */ ; | |
3046 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3047 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3048 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3049 | pSMB->Pad = 0; | |
f654bac2 | 3050 | pSMB->Fid = netfid; |
790fe579 SF |
3051 | pSMB->hdr.smb_buf_length += byte_count; |
3052 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
3053 | ||
3054 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3055 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3056 | if (rc) { | |
3057 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
3058 | } else { | |
3059 | /* decode response */ | |
3060 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3061 | if (rc || (pSMBr->ByteCount < 2)) | |
3062 | /* BB also check enough total bytes returned */ | |
3063 | /* If rc should we check for EOPNOSUPP and | |
3064 | disable the srvino flag? or in caller? */ | |
3065 | rc = -EIO; /* bad smb */ | |
3066 | else { | |
3067 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3068 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3069 | struct file_chattr_info *pfinfo; | |
3070 | /* BB Do we need a cast or hash here ? */ | |
3071 | if (count != 16) { | |
3072 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
3073 | rc = -EIO; | |
3074 | goto GetExtAttrOut; | |
3075 | } | |
3076 | pfinfo = (struct file_chattr_info *) | |
3077 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3078 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3079 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3080 | } |
3081 | } | |
f654bac2 | 3082 | GetExtAttrOut: |
790fe579 SF |
3083 | cifs_buf_release(pSMB); |
3084 | if (rc == -EAGAIN) | |
3085 | goto GetExtAttrRetry; | |
3086 | return rc; | |
f654bac2 SF |
3087 | } |
3088 | ||
f654bac2 | 3089 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3090 | |
297647c2 | 3091 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
0a4b92c0 SF |
3092 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3093 | int | |
3094 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
630f3f0c | 3095 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3096 | { |
3097 | int rc = 0; | |
3098 | int buf_type = 0; | |
ad7a2926 | 3099 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3100 | struct kvec iov[1]; |
3101 | ||
3102 | cFYI(1, ("GetCifsACL")); | |
3103 | ||
630f3f0c SF |
3104 | *pbuflen = 0; |
3105 | *acl_inf = NULL; | |
3106 | ||
b9c7a2bb | 3107 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3108 | 8 /* parm len */, tcon, (void **) &pSMB); |
3109 | if (rc) | |
3110 | return rc; | |
3111 | ||
3112 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3113 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3114 | pSMB->MaxSetupCount = 0; | |
3115 | pSMB->Fid = fid; /* file handle always le */ | |
3116 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3117 | CIFS_ACL_DACL); | |
3118 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3119 | pSMB->hdr.smb_buf_length += 11; | |
3120 | iov[0].iov_base = (char *)pSMB; | |
3121 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3122 | ||
a761ac57 | 3123 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
133672ef | 3124 | CIFS_STD_OP); |
0a4b92c0 SF |
3125 | cifs_stats_inc(&tcon->num_acl_get); |
3126 | if (rc) { | |
3127 | cFYI(1, ("Send error in QuerySecDesc = %d", rc)); | |
3128 | } else { /* decode response */ | |
ad7a2926 | 3129 | __le32 *parm; |
630f3f0c SF |
3130 | __u32 parm_len; |
3131 | __u32 acl_len; | |
50c2f753 | 3132 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3133 | char *pdata; |
0a4b92c0 SF |
3134 | |
3135 | /* validate_nttransact */ | |
50c2f753 | 3136 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3137 | &pdata, &parm_len, pbuflen); |
790fe579 | 3138 | if (rc) |
0a4b92c0 SF |
3139 | goto qsec_out; |
3140 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3141 | ||
630f3f0c | 3142 | cFYI(1, ("smb %p parm %p data %p", pSMBr, parm, *acl_inf)); |
0a4b92c0 SF |
3143 | |
3144 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3145 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3146 | *pbuflen = 0; |
0a4b92c0 SF |
3147 | goto qsec_out; |
3148 | } | |
3149 | ||
3150 | /* BB check that data area is minimum length and as big as acl_len */ | |
3151 | ||
af6f4612 | 3152 | acl_len = le32_to_cpu(*parm); |
630f3f0c SF |
3153 | if (acl_len != *pbuflen) { |
3154 | cERROR(1, ("acl length %d does not match %d", | |
3155 | acl_len, *pbuflen)); | |
3156 | if (*pbuflen > acl_len) | |
3157 | *pbuflen = acl_len; | |
3158 | } | |
0a4b92c0 | 3159 | |
630f3f0c SF |
3160 | /* check if buffer is big enough for the acl |
3161 | header followed by the smallest SID */ | |
3162 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3163 | (*pbuflen >= 64 * 1024)) { | |
3164 | cERROR(1, ("bad acl length %d", *pbuflen)); | |
3165 | rc = -EINVAL; | |
3166 | *pbuflen = 0; | |
3167 | } else { | |
3168 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3169 | if (*acl_inf == NULL) { | |
3170 | *pbuflen = 0; | |
3171 | rc = -ENOMEM; | |
3172 | } | |
3173 | memcpy(*acl_inf, pdata, *pbuflen); | |
3174 | } | |
0a4b92c0 SF |
3175 | } |
3176 | qsec_out: | |
790fe579 | 3177 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3178 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3179 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3180 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3181 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3182 | return rc; |
3183 | } | |
97837582 SF |
3184 | |
3185 | int | |
3186 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3187 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3188 | { | |
3189 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3190 | int rc = 0; | |
3191 | int bytes_returned = 0; | |
3192 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3193 | NTRANSACT_RSP *pSMBr = NULL; | |
3194 | ||
3195 | setCifsAclRetry: | |
3196 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3197 | (void **) &pSMBr); | |
3198 | if (rc) | |
3199 | return (rc); | |
3200 | ||
3201 | pSMB->MaxSetupCount = 0; | |
3202 | pSMB->Reserved = 0; | |
3203 | ||
3204 | param_count = 8; | |
3205 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3206 | data_count = acllen; | |
3207 | data_offset = param_offset + param_count; | |
3208 | byte_count = 3 /* pad */ + param_count; | |
3209 | ||
3210 | pSMB->DataCount = cpu_to_le32(data_count); | |
3211 | pSMB->TotalDataCount = pSMB->DataCount; | |
3212 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3213 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3214 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3215 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3216 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3217 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3218 | pSMB->SetupCount = 0; | |
3219 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3220 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3221 | ||
3222 | pSMB->Fid = fid; /* file handle always le */ | |
3223 | pSMB->Reserved2 = 0; | |
3224 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3225 | ||
3226 | if (pntsd && acllen) { | |
3227 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3228 | (char *) pntsd, | |
3229 | acllen); | |
3230 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3231 | ||
3232 | } else | |
3233 | pSMB->hdr.smb_buf_length += byte_count; | |
3234 | ||
3235 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3236 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3237 | ||
3238 | cFYI(1, ("SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc)); | |
3239 | if (rc) | |
3240 | cFYI(1, ("Set CIFS ACL returned %d", rc)); | |
3241 | cifs_buf_release(pSMB); | |
3242 | ||
3243 | if (rc == -EAGAIN) | |
3244 | goto setCifsAclRetry; | |
3245 | ||
3246 | return (rc); | |
3247 | } | |
3248 | ||
297647c2 | 3249 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
0a4b92c0 | 3250 | |
6b8edfe0 SF |
3251 | /* Legacy Query Path Information call for lookup to old servers such |
3252 | as Win9x/WinME */ | |
3253 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 SF |
3254 | const unsigned char *searchName, |
3255 | FILE_ALL_INFO *pFinfo, | |
3256 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3257 | { |
ad7a2926 SF |
3258 | QUERY_INFORMATION_REQ *pSMB; |
3259 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3260 | int rc = 0; |
3261 | int bytes_returned; | |
3262 | int name_len; | |
3263 | ||
50c2f753 | 3264 | cFYI(1, ("In SMBQPath path %s", searchName)); |
6b8edfe0 SF |
3265 | QInfRetry: |
3266 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3267 | (void **) &pSMBr); |
6b8edfe0 SF |
3268 | if (rc) |
3269 | return rc; | |
3270 | ||
3271 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3272 | name_len = | |
50c2f753 SF |
3273 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
3274 | PATH_MAX, nls_codepage, remap); | |
6b8edfe0 SF |
3275 | name_len++; /* trailing null */ |
3276 | name_len *= 2; | |
50c2f753 | 3277 | } else { |
6b8edfe0 SF |
3278 | name_len = strnlen(searchName, PATH_MAX); |
3279 | name_len++; /* trailing null */ | |
3280 | strncpy(pSMB->FileName, searchName, name_len); | |
3281 | } | |
3282 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3283 | name_len++; /* account for buffer type byte */ |
6b8edfe0 SF |
3284 | pSMB->hdr.smb_buf_length += (__u16) name_len; |
3285 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3286 | ||
3287 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3288 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 SF |
3289 | if (rc) { |
3290 | cFYI(1, ("Send error in QueryInfo = %d", rc)); | |
ad7a2926 | 3291 | } else if (pFinfo) { |
1bd5bbcb SF |
3292 | struct timespec ts; |
3293 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3294 | |
3295 | /* decode response */ | |
1bd5bbcb | 3296 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3297 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3298 | ts.tv_nsec = 0; |
3299 | ts.tv_sec = time; | |
3300 | /* decode time fields */ | |
733f99ac | 3301 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
3302 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
3303 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
3304 | pFinfo->AllocationSize = |
3305 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3306 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3307 | pFinfo->Attributes = | |
3308 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
3309 | } else |
3310 | rc = -EIO; /* bad buffer passed in */ | |
3311 | ||
3312 | cifs_buf_release(pSMB); | |
3313 | ||
3314 | if (rc == -EAGAIN) | |
3315 | goto QInfRetry; | |
3316 | ||
3317 | return rc; | |
3318 | } | |
3319 | ||
3320 | ||
3321 | ||
3322 | ||
1da177e4 LT |
3323 | int |
3324 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3325 | const unsigned char *searchName, | |
ad7a2926 | 3326 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 3327 | int legacy /* old style infolevel */, |
737b758c | 3328 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3329 | { |
3330 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3331 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3332 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3333 | int rc = 0; | |
3334 | int bytes_returned; | |
3335 | int name_len; | |
3336 | __u16 params, byte_count; | |
3337 | ||
3338 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
3339 | QPathInfoRetry: | |
3340 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3341 | (void **) &pSMBr); | |
3342 | if (rc) | |
3343 | return rc; | |
3344 | ||
3345 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3346 | name_len = | |
50c2f753 | 3347 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3348 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3349 | name_len++; /* trailing null */ |
3350 | name_len *= 2; | |
50c2f753 | 3351 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3352 | name_len = strnlen(searchName, PATH_MAX); |
3353 | name_len++; /* trailing null */ | |
3354 | strncpy(pSMB->FileName, searchName, name_len); | |
3355 | } | |
3356 | ||
50c2f753 | 3357 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3358 | pSMB->TotalDataCount = 0; |
3359 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3360 | /* BB find exact max SMB PDU from sess structure BB */ |
3361 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3362 | pSMB->MaxSetupCount = 0; |
3363 | pSMB->Reserved = 0; | |
3364 | pSMB->Flags = 0; | |
3365 | pSMB->Timeout = 0; | |
3366 | pSMB->Reserved2 = 0; | |
3367 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3368 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3369 | pSMB->DataCount = 0; |
3370 | pSMB->DataOffset = 0; | |
3371 | pSMB->SetupCount = 1; | |
3372 | pSMB->Reserved3 = 0; | |
3373 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3374 | byte_count = params + 1 /* pad */ ; | |
3375 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3376 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3377 | if (legacy) |
acf1a1b1 SF |
3378 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3379 | else | |
3380 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 LT |
3381 | pSMB->Reserved4 = 0; |
3382 | pSMB->hdr.smb_buf_length += byte_count; | |
3383 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3384 | ||
3385 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3386 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3387 | if (rc) { | |
3388 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3389 | } else { /* decode response */ | |
3390 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3391 | ||
acf1a1b1 SF |
3392 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3393 | rc = -EIO; | |
50c2f753 | 3394 | else if (!legacy && (pSMBr->ByteCount < 40)) |
1da177e4 | 3395 | rc = -EIO; /* bad smb */ |
790fe579 | 3396 | else if (legacy && (pSMBr->ByteCount < 24)) |
50c2f753 SF |
3397 | rc = -EIO; /* 24 or 26 expected but we do not read |
3398 | last field */ | |
3399 | else if (pFindData) { | |
acf1a1b1 | 3400 | int size; |
1da177e4 | 3401 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
3402 | |
3403 | /* On legacy responses we do not read the last field, | |
3404 | EAsize, fortunately since it varies by subdialect and | |
3405 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3406 | bytes depending but we don't care here */ | |
3407 | if (legacy) | |
acf1a1b1 SF |
3408 | size = sizeof(FILE_INFO_STANDARD); |
3409 | else | |
3410 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
3411 | memcpy((char *) pFindData, |
3412 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 3413 | data_offset, size); |
1da177e4 LT |
3414 | } else |
3415 | rc = -ENOMEM; | |
3416 | } | |
3417 | cifs_buf_release(pSMB); | |
3418 | if (rc == -EAGAIN) | |
3419 | goto QPathInfoRetry; | |
3420 | ||
3421 | return rc; | |
3422 | } | |
3423 | ||
3424 | int | |
3425 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3426 | const unsigned char *searchName, | |
582d21e5 | 3427 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3428 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3429 | { |
3430 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3431 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3432 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3433 | int rc = 0; | |
3434 | int bytes_returned = 0; | |
3435 | int name_len; | |
3436 | __u16 params, byte_count; | |
3437 | ||
3438 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
3439 | UnixQPathInfoRetry: | |
3440 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3441 | (void **) &pSMBr); | |
3442 | if (rc) | |
3443 | return rc; | |
3444 | ||
3445 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3446 | name_len = | |
b1a45695 | 3447 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 3448 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3449 | name_len++; /* trailing null */ |
3450 | name_len *= 2; | |
50c2f753 | 3451 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3452 | name_len = strnlen(searchName, PATH_MAX); |
3453 | name_len++; /* trailing null */ | |
3454 | strncpy(pSMB->FileName, searchName, name_len); | |
3455 | } | |
3456 | ||
50c2f753 | 3457 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3458 | pSMB->TotalDataCount = 0; |
3459 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3460 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3461 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3462 | pSMB->MaxSetupCount = 0; |
3463 | pSMB->Reserved = 0; | |
3464 | pSMB->Flags = 0; | |
3465 | pSMB->Timeout = 0; | |
3466 | pSMB->Reserved2 = 0; | |
3467 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3468 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3469 | pSMB->DataCount = 0; |
3470 | pSMB->DataOffset = 0; | |
3471 | pSMB->SetupCount = 1; | |
3472 | pSMB->Reserved3 = 0; | |
3473 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3474 | byte_count = params + 1 /* pad */ ; | |
3475 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3476 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3477 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3478 | pSMB->Reserved4 = 0; | |
3479 | pSMB->hdr.smb_buf_length += byte_count; | |
3480 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3481 | ||
3482 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3483 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3484 | if (rc) { | |
3485 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3486 | } else { /* decode response */ | |
3487 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3488 | ||
3489 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
1e71f25d SF |
3490 | cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n" |
3491 | "Unix Extensions can be disabled on mount " | |
3492 | "by specifying the nosfu mount option.")); | |
1da177e4 LT |
3493 | rc = -EIO; /* bad smb */ |
3494 | } else { | |
3495 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3496 | memcpy((char *) pFindData, | |
3497 | (char *) &pSMBr->hdr.Protocol + | |
3498 | data_offset, | |
630f3f0c | 3499 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3500 | } |
3501 | } | |
3502 | cifs_buf_release(pSMB); | |
3503 | if (rc == -EAGAIN) | |
3504 | goto UnixQPathInfoRetry; | |
3505 | ||
3506 | return rc; | |
3507 | } | |
3508 | ||
1da177e4 LT |
3509 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3510 | int | |
3511 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3512 | const char *searchName, |
1da177e4 | 3513 | const struct nls_table *nls_codepage, |
50c2f753 SF |
3514 | __u16 *pnetfid, |
3515 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
3516 | { |
3517 | /* level 257 SMB_ */ | |
3518 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3519 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3520 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3521 | int rc = 0; |
3522 | int bytes_returned = 0; | |
3523 | int name_len; | |
3524 | __u16 params, byte_count; | |
3525 | ||
50c2f753 | 3526 | cFYI(1, ("In FindFirst for %s", searchName)); |
1da177e4 LT |
3527 | |
3528 | findFirstRetry: | |
3529 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3530 | (void **) &pSMBr); | |
3531 | if (rc) | |
3532 | return rc; | |
3533 | ||
3534 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3535 | name_len = | |
50c2f753 | 3536 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c SF |
3537 | PATH_MAX, nls_codepage, remap); |
3538 | /* We can not add the asterik earlier in case | |
3539 | it got remapped to 0xF03A as if it were part of the | |
3540 | directory name instead of a wildcard */ | |
1da177e4 | 3541 | name_len *= 2; |
ac67055e | 3542 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
3543 | pSMB->FileName[name_len+1] = 0; |
3544 | pSMB->FileName[name_len+2] = '*'; | |
3545 | pSMB->FileName[name_len+3] = 0; | |
3546 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
3547 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
3548 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 3549 | name_len += 2; |
1da177e4 LT |
3550 | } else { /* BB add check for overrun of SMB buf BB */ |
3551 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 3552 | /* BB fix here and in unicode clause above ie |
790fe579 | 3553 | if (name_len > buffersize-header) |
1da177e4 LT |
3554 | free buffer exit; BB */ |
3555 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 3556 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
3557 | pSMB->FileName[name_len+1] = '*'; |
3558 | pSMB->FileName[name_len+2] = 0; | |
3559 | name_len += 3; | |
1da177e4 LT |
3560 | } |
3561 | ||
3562 | params = 12 + name_len /* includes null */ ; | |
3563 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3564 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3565 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3566 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3567 | pSMB->MaxSetupCount = 0; | |
3568 | pSMB->Reserved = 0; | |
3569 | pSMB->Flags = 0; | |
3570 | pSMB->Timeout = 0; | |
3571 | pSMB->Reserved2 = 0; | |
3572 | byte_count = params + 1 /* pad */ ; | |
3573 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3574 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3575 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
3576 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
3577 | - 4); | |
1da177e4 LT |
3578 | pSMB->DataCount = 0; |
3579 | pSMB->DataOffset = 0; | |
3580 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3581 | pSMB->Reserved3 = 0; | |
3582 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3583 | pSMB->SearchAttributes = | |
3584 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3585 | ATTR_DIRECTORY); | |
50c2f753 SF |
3586 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
3587 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
3588 | CIFS_SEARCH_RETURN_RESUME); |
3589 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3590 | ||
3591 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3592 | pSMB->SearchStorageType = 0; | |
3593 | pSMB->hdr.smb_buf_length += byte_count; | |
3594 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3595 | ||
3596 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3597 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3598 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 3599 | |
88274815 SF |
3600 | if (rc) {/* BB add logic to retry regular search if Unix search |
3601 | rejected unexpectedly by server */ | |
1da177e4 LT |
3602 | /* BB Add code to handle unsupported level rc */ |
3603 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
1982c344 | 3604 | |
88274815 | 3605 | cifs_buf_release(pSMB); |
1da177e4 LT |
3606 | |
3607 | /* BB eventually could optimize out free and realloc of buf */ | |
3608 | /* for this case */ | |
3609 | if (rc == -EAGAIN) | |
3610 | goto findFirstRetry; | |
3611 | } else { /* decode response */ | |
3612 | /* BB remember to free buffer if error BB */ | |
3613 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3614 | if (rc == 0) { |
b77d753c SF |
3615 | unsigned int lnoff; |
3616 | ||
1da177e4 | 3617 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 3618 | psrch_inf->unicode = true; |
1da177e4 | 3619 | else |
4b18f2a9 | 3620 | psrch_inf->unicode = false; |
1da177e4 LT |
3621 | |
3622 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 3623 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
3624 | psrch_inf->srch_entries_start = |
3625 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 3626 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
3627 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
3628 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3629 | ||
790fe579 | 3630 | if (parms->EndofSearch) |
4b18f2a9 | 3631 | psrch_inf->endOfSearch = true; |
1da177e4 | 3632 | else |
4b18f2a9 | 3633 | psrch_inf->endOfSearch = false; |
1da177e4 | 3634 | |
50c2f753 SF |
3635 | psrch_inf->entries_in_buffer = |
3636 | le16_to_cpu(parms->SearchCount); | |
60808233 | 3637 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 3638 | psrch_inf->entries_in_buffer; |
b77d753c SF |
3639 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3640 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3641 | lnoff) { | |
3642 | cERROR(1, ("ignoring corrupt resume name")); | |
3643 | psrch_inf->last_entry = NULL; | |
3644 | return rc; | |
3645 | } | |
3646 | ||
0752f152 | 3647 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
3648 | lnoff; |
3649 | ||
1da177e4 LT |
3650 | *pnetfid = parms->SearchHandle; |
3651 | } else { | |
3652 | cifs_buf_release(pSMB); | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | return rc; | |
3657 | } | |
3658 | ||
3659 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3660 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
3661 | { |
3662 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3663 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 3664 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
3665 | char *response_data; |
3666 | int rc = 0; | |
3667 | int bytes_returned, name_len; | |
3668 | __u16 params, byte_count; | |
3669 | ||
3670 | cFYI(1, ("In FindNext")); | |
3671 | ||
4b18f2a9 | 3672 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
3673 | return -ENOENT; |
3674 | ||
3675 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3676 | (void **) &pSMBr); | |
3677 | if (rc) | |
3678 | return rc; | |
3679 | ||
50c2f753 | 3680 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
3681 | byte_count = 0; |
3682 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3683 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3684 | pSMB->MaxDataCount = | |
50c2f753 SF |
3685 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & |
3686 | 0xFFFFFF00); | |
1da177e4 LT |
3687 | pSMB->MaxSetupCount = 0; |
3688 | pSMB->Reserved = 0; | |
3689 | pSMB->Flags = 0; | |
3690 | pSMB->Timeout = 0; | |
3691 | pSMB->Reserved2 = 0; | |
3692 | pSMB->ParameterOffset = cpu_to_le16( | |
3693 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3694 | pSMB->DataCount = 0; | |
3695 | pSMB->DataOffset = 0; | |
3696 | pSMB->SetupCount = 1; | |
3697 | pSMB->Reserved3 = 0; | |
3698 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3699 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3700 | pSMB->SearchCount = | |
630f3f0c | 3701 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
3702 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
3703 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3704 | pSMB->SearchFlags = | |
3705 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3706 | ||
3707 | name_len = psrch_inf->resume_name_len; | |
3708 | params += name_len; | |
790fe579 | 3709 | if (name_len < PATH_MAX) { |
1da177e4 LT |
3710 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
3711 | byte_count += name_len; | |
ef6724e3 SF |
3712 | /* 14 byte parm len above enough for 2 byte null terminator */ |
3713 | pSMB->ResumeFileName[name_len] = 0; | |
3714 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
3715 | } else { |
3716 | rc = -EINVAL; | |
3717 | goto FNext2_err_exit; | |
3718 | } | |
3719 | byte_count = params + 1 /* pad */ ; | |
3720 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3721 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3722 | pSMB->hdr.smb_buf_length += byte_count; | |
3723 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 3724 | |
1da177e4 LT |
3725 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3726 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3727 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
3728 | if (rc) { |
3729 | if (rc == -EBADF) { | |
4b18f2a9 | 3730 | psrch_inf->endOfSearch = true; |
6353450a | 3731 | cifs_buf_release(pSMB); |
50c2f753 | 3732 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 LT |
3733 | } else |
3734 | cFYI(1, ("FindNext returned = %d", rc)); | |
3735 | } else { /* decode response */ | |
3736 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 3737 | |
790fe579 | 3738 | if (rc == 0) { |
b77d753c SF |
3739 | unsigned int lnoff; |
3740 | ||
1da177e4 LT |
3741 | /* BB fixme add lock for file (srch_info) struct here */ |
3742 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 3743 | psrch_inf->unicode = true; |
1da177e4 | 3744 | else |
4b18f2a9 | 3745 | psrch_inf->unicode = false; |
1da177e4 LT |
3746 | response_data = (char *) &pSMBr->hdr.Protocol + |
3747 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3748 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3749 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3750 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 3751 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
3752 | cifs_small_buf_release( |
3753 | psrch_inf->ntwrk_buf_start); | |
3754 | else | |
3755 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
3756 | psrch_inf->srch_entries_start = response_data; |
3757 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 3758 | psrch_inf->smallBuf = 0; |
790fe579 | 3759 | if (parms->EndofSearch) |
4b18f2a9 | 3760 | psrch_inf->endOfSearch = true; |
1da177e4 | 3761 | else |
4b18f2a9 | 3762 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
3763 | psrch_inf->entries_in_buffer = |
3764 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
3765 | psrch_inf->index_of_last_entry += |
3766 | psrch_inf->entries_in_buffer; | |
b77d753c SF |
3767 | lnoff = le16_to_cpu(parms->LastNameOffset); |
3768 | if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < | |
3769 | lnoff) { | |
3770 | cERROR(1, ("ignoring corrupt resume name")); | |
3771 | psrch_inf->last_entry = NULL; | |
3772 | return rc; | |
3773 | } else | |
3774 | psrch_inf->last_entry = | |
3775 | psrch_inf->srch_entries_start + lnoff; | |
3776 | ||
50c2f753 SF |
3777 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d", |
3778 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry)); */ | |
1da177e4 LT |
3779 | |
3780 | /* BB fixme add unlock here */ | |
3781 | } | |
3782 | ||
3783 | } | |
3784 | ||
3785 | /* BB On error, should we leave previous search buf (and count and | |
3786 | last entry fields) intact or free the previous one? */ | |
3787 | ||
3788 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3789 | since file handle passed in no longer valid */ | |
3790 | FNext2_err_exit: | |
3791 | if (rc != 0) | |
3792 | cifs_buf_release(pSMB); | |
1da177e4 LT |
3793 | return rc; |
3794 | } | |
3795 | ||
3796 | int | |
50c2f753 SF |
3797 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, |
3798 | const __u16 searchHandle) | |
1da177e4 LT |
3799 | { |
3800 | int rc = 0; | |
3801 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 LT |
3802 | |
3803 | cFYI(1, ("In CIFSSMBFindClose")); | |
3804 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
3805 | ||
3806 | /* no sense returning error if session restarted | |
3807 | as file handle has been closed */ | |
790fe579 | 3808 | if (rc == -EAGAIN) |
1da177e4 LT |
3809 | return 0; |
3810 | if (rc) | |
3811 | return rc; | |
3812 | ||
1da177e4 LT |
3813 | pSMB->FileID = searchHandle; |
3814 | pSMB->ByteCount = 0; | |
133672ef | 3815 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 3816 | if (rc) |
1da177e4 | 3817 | cERROR(1, ("Send error in FindClose = %d", rc)); |
ad7a2926 | 3818 | |
a4544347 | 3819 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
3820 | |
3821 | /* Since session is dead, search handle closed on server already */ | |
3822 | if (rc == -EAGAIN) | |
3823 | rc = 0; | |
3824 | ||
3825 | return rc; | |
3826 | } | |
3827 | ||
1da177e4 LT |
3828 | int |
3829 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
50c2f753 | 3830 | const unsigned char *searchName, |
ad7a2926 | 3831 | __u64 *inode_number, |
50c2f753 | 3832 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3833 | { |
3834 | int rc = 0; | |
3835 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3836 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3837 | int name_len, bytes_returned; | |
3838 | __u16 params, byte_count; | |
3839 | ||
50c2f753 | 3840 | cFYI(1, ("In GetSrvInodeNum for %s", searchName)); |
790fe579 | 3841 | if (tcon == NULL) |
50c2f753 | 3842 | return -ENODEV; |
1da177e4 LT |
3843 | |
3844 | GetInodeNumberRetry: | |
3845 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3846 | (void **) &pSMBr); |
1da177e4 LT |
3847 | if (rc) |
3848 | return rc; | |
3849 | ||
1da177e4 LT |
3850 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3851 | name_len = | |
b1a45695 | 3852 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
50c2f753 | 3853 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3854 | name_len++; /* trailing null */ |
3855 | name_len *= 2; | |
50c2f753 | 3856 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3857 | name_len = strnlen(searchName, PATH_MAX); |
3858 | name_len++; /* trailing null */ | |
3859 | strncpy(pSMB->FileName, searchName, name_len); | |
3860 | } | |
3861 | ||
3862 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3863 | pSMB->TotalDataCount = 0; | |
3864 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3865 | /* BB find exact max data count below from sess structure BB */ | |
3866 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3867 | pSMB->MaxSetupCount = 0; | |
3868 | pSMB->Reserved = 0; | |
3869 | pSMB->Flags = 0; | |
3870 | pSMB->Timeout = 0; | |
3871 | pSMB->Reserved2 = 0; | |
3872 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3873 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3874 | pSMB->DataCount = 0; |
3875 | pSMB->DataOffset = 0; | |
3876 | pSMB->SetupCount = 1; | |
3877 | pSMB->Reserved3 = 0; | |
3878 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3879 | byte_count = params + 1 /* pad */ ; | |
3880 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3881 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3882 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3883 | pSMB->Reserved4 = 0; | |
3884 | pSMB->hdr.smb_buf_length += byte_count; | |
3885 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3886 | ||
3887 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3888 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3889 | if (rc) { | |
3890 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
3891 | } else { | |
3892 | /* decode response */ | |
3893 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3894 | if (rc || (pSMBr->ByteCount < 2)) | |
3895 | /* BB also check enough total bytes returned */ | |
3896 | /* If rc should we check for EOPNOSUPP and | |
3897 | disable the srvino flag? or in caller? */ | |
3898 | rc = -EIO; /* bad smb */ | |
50c2f753 | 3899 | else { |
1da177e4 LT |
3900 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
3901 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 3902 | struct file_internal_info *pfinfo; |
1da177e4 | 3903 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 3904 | if (count < 8) { |
1da177e4 LT |
3905 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); |
3906 | rc = -EIO; | |
3907 | goto GetInodeNumOut; | |
3908 | } | |
3909 | pfinfo = (struct file_internal_info *) | |
3910 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3911 | *inode_number = pfinfo->UniqueId; | |
3912 | } | |
3913 | } | |
3914 | GetInodeNumOut: | |
3915 | cifs_buf_release(pSMB); | |
3916 | if (rc == -EAGAIN) | |
3917 | goto GetInodeNumberRetry; | |
3918 | return rc; | |
3919 | } | |
1da177e4 | 3920 | |
fec4585f IM |
3921 | /* parses DFS refferal V3 structure |
3922 | * caller is responsible for freeing target_nodes | |
3923 | * returns: | |
3924 | * on success - 0 | |
3925 | * on failure - errno | |
3926 | */ | |
3927 | static int | |
a1fe78f1 | 3928 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
3929 | unsigned int *num_of_nodes, |
3930 | struct dfs_info3_param **target_nodes, | |
3931 | const struct nls_table *nls_codepage) | |
3932 | { | |
3933 | int i, rc = 0; | |
3934 | char *data_end; | |
3935 | bool is_unicode; | |
3936 | struct dfs_referral_level_3 *ref; | |
3937 | ||
5ca33c6a HH |
3938 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3939 | is_unicode = true; | |
3940 | else | |
3941 | is_unicode = false; | |
fec4585f IM |
3942 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
3943 | ||
3944 | if (*num_of_nodes < 1) { | |
3945 | cERROR(1, ("num_referrals: must be at least > 0," | |
3946 | "but we get num_referrals = %d\n", *num_of_nodes)); | |
3947 | rc = -EINVAL; | |
a1fe78f1 | 3948 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3949 | } |
3950 | ||
3951 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 3952 | if (ref->VersionNumber != cpu_to_le16(3)) { |
fec4585f | 3953 | cERROR(1, ("Referrals of V%d version are not supported," |
1d92cfd5 | 3954 | "should be V3", le16_to_cpu(ref->VersionNumber))); |
fec4585f | 3955 | rc = -EINVAL; |
a1fe78f1 | 3956 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3957 | } |
3958 | ||
3959 | /* get the upper boundary of the resp buffer */ | |
3960 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
3961 | le16_to_cpu(pSMBr->t2.DataCount); | |
3962 | ||
3963 | cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n", | |
3964 | *num_of_nodes, | |
3965 | le16_to_cpu(pSMBr->DFSFlags))); | |
3966 | ||
3967 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
3968 | *num_of_nodes, GFP_KERNEL); | |
3969 | if (*target_nodes == NULL) { | |
3970 | cERROR(1, ("Failed to allocate buffer for target_nodes\n")); | |
3971 | rc = -ENOMEM; | |
a1fe78f1 | 3972 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3973 | } |
3974 | ||
3975 | /* collect neccessary data from referrals */ | |
3976 | for (i = 0; i < *num_of_nodes; i++) { | |
3977 | char *temp; | |
3978 | int max_len; | |
3979 | struct dfs_info3_param *node = (*target_nodes)+i; | |
3980 | ||
3981 | node->flags = le16_to_cpu(pSMBr->DFSFlags); | |
3982 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
3983 | node->server_type = le16_to_cpu(ref->ServerType); | |
3984 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
3985 | ||
3986 | /* copy DfsPath */ | |
3987 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
3988 | max_len = data_end - temp; | |
3989 | rc = cifs_strncpy_to_host(&(node->path_name), temp, | |
3990 | max_len, is_unicode, nls_codepage); | |
3991 | if (rc) | |
a1fe78f1 | 3992 | goto parse_DFS_referrals_exit; |
fec4585f IM |
3993 | |
3994 | /* copy link target UNC */ | |
3995 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
3996 | max_len = data_end - temp; | |
3997 | rc = cifs_strncpy_to_host(&(node->node_name), temp, | |
3998 | max_len, is_unicode, nls_codepage); | |
3999 | if (rc) | |
a1fe78f1 | 4000 | goto parse_DFS_referrals_exit; |
fec4585f | 4001 | |
1d92cfd5 | 4002 | ref += le16_to_cpu(ref->Size); |
fec4585f IM |
4003 | } |
4004 | ||
a1fe78f1 | 4005 | parse_DFS_referrals_exit: |
fec4585f IM |
4006 | if (rc) { |
4007 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4008 | *target_nodes = NULL; | |
4009 | *num_of_nodes = 0; | |
4010 | } | |
4011 | return rc; | |
4012 | } | |
4013 | ||
1da177e4 LT |
4014 | int |
4015 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
4016 | const unsigned char *searchName, | |
c2cf07d5 SF |
4017 | struct dfs_info3_param **target_nodes, |
4018 | unsigned int *num_of_nodes, | |
737b758c | 4019 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4020 | { |
4021 | /* TRANS2_GET_DFS_REFERRAL */ | |
4022 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4023 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4024 | int rc = 0; |
4025 | int bytes_returned; | |
4026 | int name_len; | |
1da177e4 | 4027 | __u16 params, byte_count; |
c2cf07d5 SF |
4028 | *num_of_nodes = 0; |
4029 | *target_nodes = NULL; | |
1da177e4 LT |
4030 | |
4031 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
4032 | if (ses == NULL) | |
4033 | return -ENODEV; | |
4034 | getDFSRetry: | |
4035 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4036 | (void **) &pSMBr); | |
4037 | if (rc) | |
4038 | return rc; | |
50c2f753 SF |
4039 | |
4040 | /* server pointer checked in called function, | |
1982c344 SF |
4041 | but should never be null here anyway */ |
4042 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4043 | pSMB->hdr.Tid = ses->ipc_tid; |
4044 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4045 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4046 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4047 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4048 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4049 | |
4050 | if (ses->capabilities & CAP_UNICODE) { | |
4051 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4052 | name_len = | |
b1a45695 | 4053 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, |
737b758c | 4054 | searchName, PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4055 | name_len++; /* trailing null */ |
4056 | name_len *= 2; | |
50c2f753 | 4057 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4058 | name_len = strnlen(searchName, PATH_MAX); |
4059 | name_len++; /* trailing null */ | |
4060 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4061 | } | |
4062 | ||
790fe579 SF |
4063 | if (ses->server) { |
4064 | if (ses->server->secMode & | |
1a4e15a0 SF |
4065 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4066 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4067 | } | |
4068 | ||
50c2f753 | 4069 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4070 | |
1da177e4 LT |
4071 | params = 2 /* level */ + name_len /*includes null */ ; |
4072 | pSMB->TotalDataCount = 0; | |
4073 | pSMB->DataCount = 0; | |
4074 | pSMB->DataOffset = 0; | |
4075 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4076 | /* BB find exact max SMB PDU from sess structure BB */ |
4077 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4078 | pSMB->MaxSetupCount = 0; |
4079 | pSMB->Reserved = 0; | |
4080 | pSMB->Flags = 0; | |
4081 | pSMB->Timeout = 0; | |
4082 | pSMB->Reserved2 = 0; | |
4083 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4084 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4085 | pSMB->SetupCount = 1; |
4086 | pSMB->Reserved3 = 0; | |
4087 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4088 | byte_count = params + 3 /* pad */ ; | |
4089 | pSMB->ParameterCount = cpu_to_le16(params); | |
4090 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4091 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
4092 | pSMB->hdr.smb_buf_length += byte_count; | |
4093 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4094 | ||
4095 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4096 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4097 | if (rc) { | |
4098 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
c2cf07d5 SF |
4099 | goto GetDFSRefExit; |
4100 | } | |
4101 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4102 | |
c2cf07d5 | 4103 | /* BB Also check if enough total bytes returned? */ |
fec4585f | 4104 | if (rc || (pSMBr->ByteCount < 17)) { |
c2cf07d5 | 4105 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4106 | goto GetDFSRefExit; |
4107 | } | |
c2cf07d5 | 4108 | |
fec4585f IM |
4109 | cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d", |
4110 | pSMBr->ByteCount, | |
4111 | le16_to_cpu(pSMBr->t2.DataOffset))); | |
1da177e4 | 4112 | |
fec4585f | 4113 | /* parse returned result into more usable form */ |
a1fe78f1 | 4114 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
fec4585f | 4115 | target_nodes, nls_codepage); |
c2cf07d5 | 4116 | |
1da177e4 | 4117 | GetDFSRefExit: |
0d817bc0 | 4118 | cifs_buf_release(pSMB); |
1da177e4 LT |
4119 | |
4120 | if (rc == -EAGAIN) | |
4121 | goto getDFSRetry; | |
4122 | ||
4123 | return rc; | |
4124 | } | |
4125 | ||
20962438 SF |
4126 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4127 | int | |
4128 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4129 | { | |
4130 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4131 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4132 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4133 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4134 | int rc = 0; | |
4135 | int bytes_returned = 0; | |
4136 | __u16 params, byte_count; | |
4137 | ||
4138 | cFYI(1, ("OldQFSInfo")); | |
4139 | oldQFSInfoRetry: | |
4140 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4141 | (void **) &pSMBr); | |
4142 | if (rc) | |
4143 | return rc; | |
20962438 SF |
4144 | |
4145 | params = 2; /* level */ | |
4146 | pSMB->TotalDataCount = 0; | |
4147 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4148 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4149 | pSMB->MaxSetupCount = 0; | |
4150 | pSMB->Reserved = 0; | |
4151 | pSMB->Flags = 0; | |
4152 | pSMB->Timeout = 0; | |
4153 | pSMB->Reserved2 = 0; | |
4154 | byte_count = params + 1 /* pad */ ; | |
4155 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4156 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4157 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4158 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4159 | pSMB->DataCount = 0; | |
4160 | pSMB->DataOffset = 0; | |
4161 | pSMB->SetupCount = 1; | |
4162 | pSMB->Reserved3 = 0; | |
4163 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4164 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4165 | pSMB->hdr.smb_buf_length += byte_count; | |
4166 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4167 | ||
4168 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4169 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4170 | if (rc) { | |
4171 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
4172 | } else { /* decode response */ | |
4173 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4174 | ||
4175 | if (rc || (pSMBr->ByteCount < 18)) | |
4176 | rc = -EIO; /* bad smb */ | |
4177 | else { | |
4178 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 4179 | cFYI(1, ("qfsinf resp BCC: %d Offset %d", |
20962438 SF |
4180 | pSMBr->ByteCount, data_offset)); |
4181 | ||
50c2f753 | 4182 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4183 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4184 | FSData->f_bsize = | |
4185 | le16_to_cpu(response_data->BytesPerSector) * | |
4186 | le32_to_cpu(response_data-> | |
4187 | SectorsPerAllocationUnit); | |
4188 | FSData->f_blocks = | |
50c2f753 | 4189 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4190 | FSData->f_bfree = FSData->f_bavail = |
4191 | le32_to_cpu(response_data->FreeAllocationUnits); | |
4192 | cFYI(1, | |
4193 | ("Blocks: %lld Free: %lld Block size %ld", | |
4194 | (unsigned long long)FSData->f_blocks, | |
4195 | (unsigned long long)FSData->f_bfree, | |
4196 | FSData->f_bsize)); | |
4197 | } | |
4198 | } | |
4199 | cifs_buf_release(pSMB); | |
4200 | ||
4201 | if (rc == -EAGAIN) | |
4202 | goto oldQFSInfoRetry; | |
4203 | ||
4204 | return rc; | |
4205 | } | |
4206 | ||
1da177e4 | 4207 | int |
737b758c | 4208 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) |
1da177e4 LT |
4209 | { |
4210 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4211 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4212 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4213 | FILE_SYSTEM_INFO *response_data; | |
4214 | int rc = 0; | |
4215 | int bytes_returned = 0; | |
4216 | __u16 params, byte_count; | |
4217 | ||
4218 | cFYI(1, ("In QFSInfo")); | |
4219 | QFSInfoRetry: | |
4220 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4221 | (void **) &pSMBr); | |
4222 | if (rc) | |
4223 | return rc; | |
4224 | ||
4225 | params = 2; /* level */ | |
4226 | pSMB->TotalDataCount = 0; | |
4227 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4228 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4229 | pSMB->MaxSetupCount = 0; |
4230 | pSMB->Reserved = 0; | |
4231 | pSMB->Flags = 0; | |
4232 | pSMB->Timeout = 0; | |
4233 | pSMB->Reserved2 = 0; | |
4234 | byte_count = params + 1 /* pad */ ; | |
4235 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4236 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4237 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4238 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4239 | pSMB->DataCount = 0; |
4240 | pSMB->DataOffset = 0; | |
4241 | pSMB->SetupCount = 1; | |
4242 | pSMB->Reserved3 = 0; | |
4243 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4244 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4245 | pSMB->hdr.smb_buf_length += byte_count; | |
4246 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4247 | ||
4248 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4249 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4250 | if (rc) { | |
20962438 | 4251 | cFYI(1, ("Send error in QFSInfo = %d", rc)); |
1da177e4 | 4252 | } else { /* decode response */ |
50c2f753 | 4253 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4254 | |
20962438 | 4255 | if (rc || (pSMBr->ByteCount < 24)) |
1da177e4 LT |
4256 | rc = -EIO; /* bad smb */ |
4257 | else { | |
4258 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4259 | |
4260 | response_data = | |
4261 | (FILE_SYSTEM_INFO | |
4262 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4263 | data_offset); | |
4264 | FSData->f_bsize = | |
4265 | le32_to_cpu(response_data->BytesPerSector) * | |
4266 | le32_to_cpu(response_data-> | |
4267 | SectorsPerAllocationUnit); | |
4268 | FSData->f_blocks = | |
4269 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4270 | FSData->f_bfree = FSData->f_bavail = | |
4271 | le64_to_cpu(response_data->FreeAllocationUnits); | |
4272 | cFYI(1, | |
4273 | ("Blocks: %lld Free: %lld Block size %ld", | |
4274 | (unsigned long long)FSData->f_blocks, | |
4275 | (unsigned long long)FSData->f_bfree, | |
4276 | FSData->f_bsize)); | |
4277 | } | |
4278 | } | |
4279 | cifs_buf_release(pSMB); | |
4280 | ||
4281 | if (rc == -EAGAIN) | |
4282 | goto QFSInfoRetry; | |
4283 | ||
4284 | return rc; | |
4285 | } | |
4286 | ||
4287 | int | |
737b758c | 4288 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4289 | { |
4290 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4291 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4292 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4293 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4294 | int rc = 0; | |
4295 | int bytes_returned = 0; | |
4296 | __u16 params, byte_count; | |
4297 | ||
4298 | cFYI(1, ("In QFSAttributeInfo")); | |
4299 | QFSAttributeRetry: | |
4300 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4301 | (void **) &pSMBr); | |
4302 | if (rc) | |
4303 | return rc; | |
4304 | ||
4305 | params = 2; /* level */ | |
4306 | pSMB->TotalDataCount = 0; | |
4307 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4308 | /* BB find exact max SMB PDU from sess structure BB */ |
4309 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4310 | pSMB->MaxSetupCount = 0; |
4311 | pSMB->Reserved = 0; | |
4312 | pSMB->Flags = 0; | |
4313 | pSMB->Timeout = 0; | |
4314 | pSMB->Reserved2 = 0; | |
4315 | byte_count = params + 1 /* pad */ ; | |
4316 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4317 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4318 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4319 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4320 | pSMB->DataCount = 0; |
4321 | pSMB->DataOffset = 0; | |
4322 | pSMB->SetupCount = 1; | |
4323 | pSMB->Reserved3 = 0; | |
4324 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4325 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4326 | pSMB->hdr.smb_buf_length += byte_count; | |
4327 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4328 | ||
4329 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4330 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4331 | if (rc) { | |
4332 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
4333 | } else { /* decode response */ | |
4334 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4335 | ||
50c2f753 SF |
4336 | if (rc || (pSMBr->ByteCount < 13)) { |
4337 | /* BB also check if enough bytes returned */ | |
1da177e4 LT |
4338 | rc = -EIO; /* bad smb */ |
4339 | } else { | |
4340 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4341 | response_data = | |
4342 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4343 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4344 | data_offset); | |
4345 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4346 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4347 | } |
4348 | } | |
4349 | cifs_buf_release(pSMB); | |
4350 | ||
4351 | if (rc == -EAGAIN) | |
4352 | goto QFSAttributeRetry; | |
4353 | ||
4354 | return rc; | |
4355 | } | |
4356 | ||
4357 | int | |
737b758c | 4358 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4359 | { |
4360 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4361 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4362 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4363 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4364 | int rc = 0; | |
4365 | int bytes_returned = 0; | |
4366 | __u16 params, byte_count; | |
4367 | ||
4368 | cFYI(1, ("In QFSDeviceInfo")); | |
4369 | QFSDeviceRetry: | |
4370 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4371 | (void **) &pSMBr); | |
4372 | if (rc) | |
4373 | return rc; | |
4374 | ||
4375 | params = 2; /* level */ | |
4376 | pSMB->TotalDataCount = 0; | |
4377 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4378 | /* BB find exact max SMB PDU from sess structure BB */ |
4379 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4380 | pSMB->MaxSetupCount = 0; |
4381 | pSMB->Reserved = 0; | |
4382 | pSMB->Flags = 0; | |
4383 | pSMB->Timeout = 0; | |
4384 | pSMB->Reserved2 = 0; | |
4385 | byte_count = params + 1 /* pad */ ; | |
4386 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4387 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4388 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4389 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4390 | |
4391 | pSMB->DataCount = 0; | |
4392 | pSMB->DataOffset = 0; | |
4393 | pSMB->SetupCount = 1; | |
4394 | pSMB->Reserved3 = 0; | |
4395 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4396 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4397 | pSMB->hdr.smb_buf_length += byte_count; | |
4398 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4399 | ||
4400 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4401 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4402 | if (rc) { | |
4403 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
4404 | } else { /* decode response */ | |
4405 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4406 | ||
630f3f0c | 4407 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) |
1da177e4 LT |
4408 | rc = -EIO; /* bad smb */ |
4409 | else { | |
4410 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4411 | response_data = | |
737b758c SF |
4412 | (FILE_SYSTEM_DEVICE_INFO *) |
4413 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4414 | data_offset); |
4415 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4416 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4417 | } |
4418 | } | |
4419 | cifs_buf_release(pSMB); | |
4420 | ||
4421 | if (rc == -EAGAIN) | |
4422 | goto QFSDeviceRetry; | |
4423 | ||
4424 | return rc; | |
4425 | } | |
4426 | ||
4427 | int | |
737b758c | 4428 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) |
1da177e4 LT |
4429 | { |
4430 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4431 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4432 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4433 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4434 | int rc = 0; | |
4435 | int bytes_returned = 0; | |
4436 | __u16 params, byte_count; | |
4437 | ||
4438 | cFYI(1, ("In QFSUnixInfo")); | |
4439 | QFSUnixRetry: | |
4440 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4441 | (void **) &pSMBr); | |
4442 | if (rc) | |
4443 | return rc; | |
4444 | ||
4445 | params = 2; /* level */ | |
4446 | pSMB->TotalDataCount = 0; | |
4447 | pSMB->DataCount = 0; | |
4448 | pSMB->DataOffset = 0; | |
4449 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4450 | /* BB find exact max SMB PDU from sess structure BB */ |
4451 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4452 | pSMB->MaxSetupCount = 0; |
4453 | pSMB->Reserved = 0; | |
4454 | pSMB->Flags = 0; | |
4455 | pSMB->Timeout = 0; | |
4456 | pSMB->Reserved2 = 0; | |
4457 | byte_count = params + 1 /* pad */ ; | |
4458 | pSMB->ParameterCount = cpu_to_le16(params); | |
4459 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4460 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4461 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4462 | pSMB->SetupCount = 1; |
4463 | pSMB->Reserved3 = 0; | |
4464 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4465 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4466 | pSMB->hdr.smb_buf_length += byte_count; | |
4467 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4468 | ||
4469 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4470 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4471 | if (rc) { | |
4472 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4473 | } else { /* decode response */ | |
4474 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4475 | ||
4476 | if (rc || (pSMBr->ByteCount < 13)) { | |
4477 | rc = -EIO; /* bad smb */ | |
4478 | } else { | |
4479 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4480 | response_data = | |
4481 | (FILE_SYSTEM_UNIX_INFO | |
4482 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4483 | data_offset); | |
4484 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4485 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4486 | } |
4487 | } | |
4488 | cifs_buf_release(pSMB); | |
4489 | ||
4490 | if (rc == -EAGAIN) | |
4491 | goto QFSUnixRetry; | |
4492 | ||
4493 | ||
4494 | return rc; | |
4495 | } | |
4496 | ||
ac67055e | 4497 | int |
45abc6ee | 4498 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) |
ac67055e JA |
4499 | { |
4500 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4501 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4502 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4503 | int rc = 0; | |
4504 | int bytes_returned = 0; | |
4505 | __u16 params, param_offset, offset, byte_count; | |
4506 | ||
4507 | cFYI(1, ("In SETFSUnixInfo")); | |
4508 | SETFSUnixRetry: | |
f26282c9 | 4509 | /* BB switch to small buf init to save memory */ |
ac67055e JA |
4510 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
4511 | (void **) &pSMBr); | |
4512 | if (rc) | |
4513 | return rc; | |
4514 | ||
4515 | params = 4; /* 2 bytes zero followed by info level. */ | |
4516 | pSMB->MaxSetupCount = 0; | |
4517 | pSMB->Reserved = 0; | |
4518 | pSMB->Flags = 0; | |
4519 | pSMB->Timeout = 0; | |
4520 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4521 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4522 | - 4; | |
ac67055e JA |
4523 | offset = param_offset + params; |
4524 | ||
4525 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4526 | /* BB find exact max SMB PDU from sess structure BB */ |
4527 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4528 | pSMB->SetupCount = 1; |
4529 | pSMB->Reserved3 = 0; | |
4530 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4531 | byte_count = 1 /* pad */ + params + 12; | |
4532 | ||
4533 | pSMB->DataCount = cpu_to_le16(12); | |
4534 | pSMB->ParameterCount = cpu_to_le16(params); | |
4535 | pSMB->TotalDataCount = pSMB->DataCount; | |
4536 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4537 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4538 | pSMB->DataOffset = cpu_to_le16(offset); | |
4539 | ||
4540 | /* Params. */ | |
4541 | pSMB->FileNum = 0; | |
4542 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4543 | ||
4544 | /* Data. */ | |
4545 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4546 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4547 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4548 | ||
4549 | pSMB->hdr.smb_buf_length += byte_count; | |
4550 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4551 | ||
4552 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4553 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4554 | if (rc) { | |
4555 | cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); | |
4556 | } else { /* decode response */ | |
4557 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4558 | if (rc) |
ac67055e | 4559 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4560 | } |
4561 | cifs_buf_release(pSMB); | |
4562 | ||
4563 | if (rc == -EAGAIN) | |
4564 | goto SETFSUnixRetry; | |
4565 | ||
4566 | return rc; | |
4567 | } | |
4568 | ||
4569 | ||
1da177e4 LT |
4570 | |
4571 | int | |
4572 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
737b758c | 4573 | struct kstatfs *FSData) |
1da177e4 LT |
4574 | { |
4575 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4576 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4577 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4578 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4579 | int rc = 0; | |
4580 | int bytes_returned = 0; | |
4581 | __u16 params, byte_count; | |
4582 | ||
4583 | cFYI(1, ("In QFSPosixInfo")); | |
4584 | QFSPosixRetry: | |
4585 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4586 | (void **) &pSMBr); | |
4587 | if (rc) | |
4588 | return rc; | |
4589 | ||
4590 | params = 2; /* level */ | |
4591 | pSMB->TotalDataCount = 0; | |
4592 | pSMB->DataCount = 0; | |
4593 | pSMB->DataOffset = 0; | |
4594 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4595 | /* BB find exact max SMB PDU from sess structure BB */ |
4596 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4597 | pSMB->MaxSetupCount = 0; |
4598 | pSMB->Reserved = 0; | |
4599 | pSMB->Flags = 0; | |
4600 | pSMB->Timeout = 0; | |
4601 | pSMB->Reserved2 = 0; | |
4602 | byte_count = params + 1 /* pad */ ; | |
4603 | pSMB->ParameterCount = cpu_to_le16(params); | |
4604 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4605 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4606 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4607 | pSMB->SetupCount = 1; |
4608 | pSMB->Reserved3 = 0; | |
4609 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4610 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4611 | pSMB->hdr.smb_buf_length += byte_count; | |
4612 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4613 | ||
4614 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4615 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4616 | if (rc) { | |
4617 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4618 | } else { /* decode response */ | |
4619 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4620 | ||
4621 | if (rc || (pSMBr->ByteCount < 13)) { | |
4622 | rc = -EIO; /* bad smb */ | |
4623 | } else { | |
4624 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4625 | response_data = | |
4626 | (FILE_SYSTEM_POSIX_INFO | |
4627 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4628 | data_offset); | |
4629 | FSData->f_bsize = | |
4630 | le32_to_cpu(response_data->BlockSize); | |
4631 | FSData->f_blocks = | |
4632 | le64_to_cpu(response_data->TotalBlocks); | |
4633 | FSData->f_bfree = | |
4634 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 4635 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
4636 | FSData->f_bavail = FSData->f_bfree; |
4637 | } else { | |
4638 | FSData->f_bavail = | |
50c2f753 | 4639 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 4640 | } |
790fe579 | 4641 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4642 | FSData->f_files = |
50c2f753 | 4643 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 4644 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 4645 | FSData->f_ffree = |
50c2f753 | 4646 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
4647 | } |
4648 | } | |
4649 | cifs_buf_release(pSMB); | |
4650 | ||
4651 | if (rc == -EAGAIN) | |
4652 | goto QFSPosixRetry; | |
4653 | ||
4654 | return rc; | |
4655 | } | |
4656 | ||
4657 | ||
50c2f753 SF |
4658 | /* We can not use write of zero bytes trick to |
4659 | set file size due to need for large file support. Also note that | |
4660 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
4661 | routine which is only needed to work around a sharing violation bug |
4662 | in Samba which this routine can run into */ | |
4663 | ||
4664 | int | |
4665 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4b18f2a9 | 4666 | __u64 size, bool SetAllocation, |
737b758c | 4667 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4668 | { |
4669 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4670 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4671 | struct file_end_of_file_info *parm_data; | |
4672 | int name_len; | |
4673 | int rc = 0; | |
4674 | int bytes_returned = 0; | |
4675 | __u16 params, byte_count, data_count, param_offset, offset; | |
4676 | ||
4677 | cFYI(1, ("In SetEOF")); | |
4678 | SetEOFRetry: | |
4679 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4680 | (void **) &pSMBr); | |
4681 | if (rc) | |
4682 | return rc; | |
4683 | ||
4684 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4685 | name_len = | |
b1a45695 | 4686 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4687 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4688 | name_len++; /* trailing null */ |
4689 | name_len *= 2; | |
3e87d803 | 4690 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4691 | name_len = strnlen(fileName, PATH_MAX); |
4692 | name_len++; /* trailing null */ | |
4693 | strncpy(pSMB->FileName, fileName, name_len); | |
4694 | } | |
4695 | params = 6 + name_len; | |
26f57364 | 4696 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 4697 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 4698 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
4699 | pSMB->MaxSetupCount = 0; |
4700 | pSMB->Reserved = 0; | |
4701 | pSMB->Flags = 0; | |
4702 | pSMB->Timeout = 0; | |
4703 | pSMB->Reserved2 = 0; | |
4704 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 4705 | InformationLevel) - 4; |
1da177e4 | 4706 | offset = param_offset + params; |
790fe579 | 4707 | if (SetAllocation) { |
50c2f753 SF |
4708 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4709 | pSMB->InformationLevel = | |
4710 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4711 | else | |
4712 | pSMB->InformationLevel = | |
4713 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4714 | } else /* Set File Size */ { | |
1da177e4 LT |
4715 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4716 | pSMB->InformationLevel = | |
50c2f753 | 4717 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4718 | else |
4719 | pSMB->InformationLevel = | |
50c2f753 | 4720 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4721 | } |
4722 | ||
4723 | parm_data = | |
4724 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4725 | offset); | |
4726 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4727 | pSMB->DataOffset = cpu_to_le16(offset); | |
4728 | pSMB->SetupCount = 1; | |
4729 | pSMB->Reserved3 = 0; | |
4730 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4731 | byte_count = 3 /* pad */ + params + data_count; | |
4732 | pSMB->DataCount = cpu_to_le16(data_count); | |
4733 | pSMB->TotalDataCount = pSMB->DataCount; | |
4734 | pSMB->ParameterCount = cpu_to_le16(params); | |
4735 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4736 | pSMB->Reserved4 = 0; | |
4737 | pSMB->hdr.smb_buf_length += byte_count; | |
4738 | parm_data->FileSize = cpu_to_le64(size); | |
4739 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4740 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4741 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 4742 | if (rc) |
1da177e4 | 4743 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); |
1da177e4 LT |
4744 | |
4745 | cifs_buf_release(pSMB); | |
4746 | ||
4747 | if (rc == -EAGAIN) | |
4748 | goto SetEOFRetry; | |
4749 | ||
4750 | return rc; | |
4751 | } | |
4752 | ||
4753 | int | |
50c2f753 | 4754 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, |
4b18f2a9 | 4755 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
4756 | { |
4757 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4758 | char *data_offset; |
4759 | struct file_end_of_file_info *parm_data; | |
4760 | int rc = 0; | |
1da177e4 LT |
4761 | __u16 params, param_offset, offset, byte_count, count; |
4762 | ||
4763 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
4764 | (long long)size)); | |
cd63499c SF |
4765 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4766 | ||
1da177e4 LT |
4767 | if (rc) |
4768 | return rc; | |
4769 | ||
4770 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4771 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4772 | |
1da177e4 LT |
4773 | params = 6; |
4774 | pSMB->MaxSetupCount = 0; | |
4775 | pSMB->Reserved = 0; | |
4776 | pSMB->Flags = 0; | |
4777 | pSMB->Timeout = 0; | |
4778 | pSMB->Reserved2 = 0; | |
4779 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4780 | offset = param_offset + params; | |
4781 | ||
50c2f753 | 4782 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 LT |
4783 | |
4784 | count = sizeof(struct file_end_of_file_info); | |
4785 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4786 | /* BB find exact max SMB PDU from sess structure BB */ |
4787 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4788 | pSMB->SetupCount = 1; |
4789 | pSMB->Reserved3 = 0; | |
4790 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4791 | byte_count = 3 /* pad */ + params + count; | |
4792 | pSMB->DataCount = cpu_to_le16(count); | |
4793 | pSMB->ParameterCount = cpu_to_le16(params); | |
4794 | pSMB->TotalDataCount = pSMB->DataCount; | |
4795 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4796 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4797 | parm_data = | |
50c2f753 SF |
4798 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
4799 | + offset); | |
1da177e4 LT |
4800 | pSMB->DataOffset = cpu_to_le16(offset); |
4801 | parm_data->FileSize = cpu_to_le64(size); | |
4802 | pSMB->Fid = fid; | |
790fe579 | 4803 | if (SetAllocation) { |
1da177e4 LT |
4804 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4805 | pSMB->InformationLevel = | |
4806 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4807 | else | |
4808 | pSMB->InformationLevel = | |
4809 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 4810 | } else /* Set File Size */ { |
1da177e4 LT |
4811 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
4812 | pSMB->InformationLevel = | |
50c2f753 | 4813 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
4814 | else |
4815 | pSMB->InformationLevel = | |
50c2f753 | 4816 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
4817 | } |
4818 | pSMB->Reserved4 = 0; | |
4819 | pSMB->hdr.smb_buf_length += byte_count; | |
4820 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
133672ef | 4821 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
1da177e4 LT |
4822 | if (rc) { |
4823 | cFYI(1, | |
4824 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
4825 | rc)); | |
4826 | } | |
4827 | ||
50c2f753 | 4828 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4829 | since file handle passed in no longer valid */ |
4830 | ||
4831 | return rc; | |
4832 | } | |
4833 | ||
50c2f753 | 4834 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
4835 | an open handle, rather than by pathname - this is awkward due to |
4836 | potential access conflicts on the open, but it is unavoidable for these | |
4837 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4838 | time and resort to the original setpathinfo level which takes the ancient | |
4839 | DOS time format with 2 second granularity */ | |
4840 | int | |
2dd2dfa0 JL |
4841 | CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon, |
4842 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) | |
1da177e4 LT |
4843 | { |
4844 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
4845 | char *data_offset; |
4846 | int rc = 0; | |
1da177e4 LT |
4847 | __u16 params, param_offset, offset, byte_count, count; |
4848 | ||
4849 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
cd63499c SF |
4850 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
4851 | ||
1da177e4 LT |
4852 | if (rc) |
4853 | return rc; | |
4854 | ||
2dd2dfa0 JL |
4855 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
4856 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 4857 | |
1da177e4 LT |
4858 | params = 6; |
4859 | pSMB->MaxSetupCount = 0; | |
4860 | pSMB->Reserved = 0; | |
4861 | pSMB->Flags = 0; | |
4862 | pSMB->Timeout = 0; | |
4863 | pSMB->Reserved2 = 0; | |
4864 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4865 | offset = param_offset + params; | |
4866 | ||
50c2f753 | 4867 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
1da177e4 | 4868 | |
26f57364 | 4869 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4870 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4871 | /* BB find max SMB PDU from sess */ |
4872 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4873 | pSMB->SetupCount = 1; |
4874 | pSMB->Reserved3 = 0; | |
4875 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4876 | byte_count = 3 /* pad */ + params + count; | |
4877 | pSMB->DataCount = cpu_to_le16(count); | |
4878 | pSMB->ParameterCount = cpu_to_le16(params); | |
4879 | pSMB->TotalDataCount = pSMB->DataCount; | |
4880 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4881 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4882 | pSMB->DataOffset = cpu_to_le16(offset); | |
4883 | pSMB->Fid = fid; | |
4884 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4885 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4886 | else | |
4887 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4888 | pSMB->Reserved4 = 0; | |
4889 | pSMB->hdr.smb_buf_length += byte_count; | |
4890 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
50c2f753 | 4891 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
133672ef | 4892 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); |
ad7a2926 | 4893 | if (rc) |
50c2f753 | 4894 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); |
1da177e4 | 4895 | |
50c2f753 | 4896 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
4897 | since file handle passed in no longer valid */ |
4898 | ||
4899 | return rc; | |
4900 | } | |
4901 | ||
6d22f098 JL |
4902 | int |
4903 | CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon, | |
4904 | bool delete_file, __u16 fid, __u32 pid_of_opener) | |
4905 | { | |
4906 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4907 | char *data_offset; | |
4908 | int rc = 0; | |
4909 | __u16 params, param_offset, offset, byte_count, count; | |
4910 | ||
4911 | cFYI(1, ("Set File Disposition (via SetFileInfo)")); | |
4912 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
4913 | ||
4914 | if (rc) | |
4915 | return rc; | |
4916 | ||
4917 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4918 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
4919 | ||
4920 | params = 6; | |
4921 | pSMB->MaxSetupCount = 0; | |
4922 | pSMB->Reserved = 0; | |
4923 | pSMB->Flags = 0; | |
4924 | pSMB->Timeout = 0; | |
4925 | pSMB->Reserved2 = 0; | |
4926 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4927 | offset = param_offset + params; | |
4928 | ||
4929 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4930 | ||
4931 | count = 1; | |
4932 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4933 | /* BB find max SMB PDU from sess */ | |
4934 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4935 | pSMB->SetupCount = 1; | |
4936 | pSMB->Reserved3 = 0; | |
4937 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4938 | byte_count = 3 /* pad */ + params + count; | |
4939 | pSMB->DataCount = cpu_to_le16(count); | |
4940 | pSMB->ParameterCount = cpu_to_le16(params); | |
4941 | pSMB->TotalDataCount = pSMB->DataCount; | |
4942 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4943 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4944 | pSMB->DataOffset = cpu_to_le16(offset); | |
4945 | pSMB->Fid = fid; | |
4946 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
4947 | pSMB->Reserved4 = 0; | |
4948 | pSMB->hdr.smb_buf_length += byte_count; | |
4949 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4950 | *data_offset = delete_file ? 1 : 0; | |
4951 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
4952 | if (rc) | |
4953 | cFYI(1, ("Send error in SetFileDisposition = %d", rc)); | |
4954 | ||
4955 | return rc; | |
4956 | } | |
1da177e4 LT |
4957 | |
4958 | int | |
6fc000e5 JL |
4959 | CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon, |
4960 | const char *fileName, const FILE_BASIC_INFO *data, | |
4961 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
4962 | { |
4963 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4964 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4965 | int name_len; | |
4966 | int rc = 0; | |
4967 | int bytes_returned = 0; | |
4968 | char *data_offset; | |
4969 | __u16 params, param_offset, offset, byte_count, count; | |
4970 | ||
4971 | cFYI(1, ("In SetTimes")); | |
4972 | ||
4973 | SetTimesRetry: | |
4974 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4975 | (void **) &pSMBr); | |
4976 | if (rc) | |
4977 | return rc; | |
4978 | ||
4979 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4980 | name_len = | |
b1a45695 | 4981 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 4982 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
4983 | name_len++; /* trailing null */ |
4984 | name_len *= 2; | |
50c2f753 | 4985 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4986 | name_len = strnlen(fileName, PATH_MAX); |
4987 | name_len++; /* trailing null */ | |
4988 | strncpy(pSMB->FileName, fileName, name_len); | |
4989 | } | |
4990 | ||
4991 | params = 6 + name_len; | |
26f57364 | 4992 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 4993 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
4994 | /* BB find max SMB PDU from sess structure BB */ |
4995 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4996 | pSMB->MaxSetupCount = 0; |
4997 | pSMB->Reserved = 0; | |
4998 | pSMB->Flags = 0; | |
4999 | pSMB->Timeout = 0; | |
5000 | pSMB->Reserved2 = 0; | |
5001 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5002 | InformationLevel) - 4; |
1da177e4 LT |
5003 | offset = param_offset + params; |
5004 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5005 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5006 | pSMB->DataOffset = cpu_to_le16(offset); | |
5007 | pSMB->SetupCount = 1; | |
5008 | pSMB->Reserved3 = 0; | |
5009 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5010 | byte_count = 3 /* pad */ + params + count; | |
5011 | ||
5012 | pSMB->DataCount = cpu_to_le16(count); | |
5013 | pSMB->ParameterCount = cpu_to_le16(params); | |
5014 | pSMB->TotalDataCount = pSMB->DataCount; | |
5015 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5016 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5017 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5018 | else | |
5019 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5020 | pSMB->Reserved4 = 0; | |
5021 | pSMB->hdr.smb_buf_length += byte_count; | |
26f57364 | 5022 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5023 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5024 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5025 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5026 | if (rc) |
1da177e4 | 5027 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); |
1da177e4 LT |
5028 | |
5029 | cifs_buf_release(pSMB); | |
5030 | ||
5031 | if (rc == -EAGAIN) | |
5032 | goto SetTimesRetry; | |
5033 | ||
5034 | return rc; | |
5035 | } | |
5036 | ||
5037 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5038 | /* Can be used to set attributes */ | |
5039 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5040 | handling it anyway and NT4 was what we thought it would be needed for | |
5041 | Do not delete it until we prove whether needed for Win9x though */ | |
5042 | int | |
5043 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
5044 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
5045 | { | |
5046 | SETATTR_REQ *pSMB = NULL; | |
5047 | SETATTR_RSP *pSMBr = NULL; | |
5048 | int rc = 0; | |
5049 | int bytes_returned; | |
5050 | int name_len; | |
5051 | ||
5052 | cFYI(1, ("In SetAttrLegacy")); | |
5053 | ||
5054 | SetAttrLgcyRetry: | |
5055 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5056 | (void **) &pSMBr); | |
5057 | if (rc) | |
5058 | return rc; | |
5059 | ||
5060 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5061 | name_len = | |
50c2f753 | 5062 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, |
1da177e4 LT |
5063 | PATH_MAX, nls_codepage); |
5064 | name_len++; /* trailing null */ | |
5065 | name_len *= 2; | |
50c2f753 | 5066 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5067 | name_len = strnlen(fileName, PATH_MAX); |
5068 | name_len++; /* trailing null */ | |
5069 | strncpy(pSMB->fileName, fileName, name_len); | |
5070 | } | |
5071 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5072 | pSMB->BufferFormat = 0x04; | |
5073 | pSMB->hdr.smb_buf_length += name_len + 1; | |
5074 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
5075 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5076 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5077 | if (rc) |
1da177e4 | 5078 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); |
1da177e4 LT |
5079 | |
5080 | cifs_buf_release(pSMB); | |
5081 | ||
5082 | if (rc == -EAGAIN) | |
5083 | goto SetAttrLgcyRetry; | |
5084 | ||
5085 | return rc; | |
5086 | } | |
5087 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5088 | ||
5089 | int | |
4e1e7fb9 | 5090 | CIFSSMBUnixSetInfo(const int xid, struct cifsTconInfo *tcon, char *fileName, |
063ea279 | 5091 | const struct cifs_unix_set_info_args *args, |
4e1e7fb9 | 5092 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5093 | { |
5094 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5095 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5096 | int name_len; | |
5097 | int rc = 0; | |
5098 | int bytes_returned = 0; | |
5099 | FILE_UNIX_BASIC_INFO *data_offset; | |
5100 | __u16 params, param_offset, offset, count, byte_count; | |
4e1e7fb9 | 5101 | __u64 mode = args->mode; |
1da177e4 LT |
5102 | |
5103 | cFYI(1, ("In SetUID/GID/Mode")); | |
5104 | setPermsRetry: | |
5105 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5106 | (void **) &pSMBr); | |
5107 | if (rc) | |
5108 | return rc; | |
5109 | ||
5110 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5111 | name_len = | |
50c2f753 | 5112 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5113 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5114 | name_len++; /* trailing null */ |
5115 | name_len *= 2; | |
3e87d803 | 5116 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5117 | name_len = strnlen(fileName, PATH_MAX); |
5118 | name_len++; /* trailing null */ | |
5119 | strncpy(pSMB->FileName, fileName, name_len); | |
5120 | } | |
5121 | ||
5122 | params = 6 + name_len; | |
26f57364 | 5123 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5124 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5125 | /* BB find max SMB PDU from sess structure BB */ |
5126 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5127 | pSMB->MaxSetupCount = 0; |
5128 | pSMB->Reserved = 0; | |
5129 | pSMB->Flags = 0; | |
5130 | pSMB->Timeout = 0; | |
5131 | pSMB->Reserved2 = 0; | |
5132 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5133 | InformationLevel) - 4; |
1da177e4 LT |
5134 | offset = param_offset + params; |
5135 | data_offset = | |
5136 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5137 | offset); | |
5138 | memset(data_offset, 0, count); | |
5139 | pSMB->DataOffset = cpu_to_le16(offset); | |
5140 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5141 | pSMB->SetupCount = 1; | |
5142 | pSMB->Reserved3 = 0; | |
5143 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5144 | byte_count = 3 /* pad */ + params + count; | |
5145 | pSMB->ParameterCount = cpu_to_le16(params); | |
5146 | pSMB->DataCount = cpu_to_le16(count); | |
5147 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5148 | pSMB->TotalDataCount = pSMB->DataCount; | |
5149 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5150 | pSMB->Reserved4 = 0; | |
5151 | pSMB->hdr.smb_buf_length += byte_count; | |
c7af1857 SF |
5152 | /* Samba server ignores set of file size to zero due to bugs in some |
5153 | older clients, but we should be precise - we use SetFileSize to | |
5154 | set file size and do not want to truncate file size to zero | |
5155 | accidently as happened on one Samba server beta by putting | |
50c2f753 | 5156 | zero instead of -1 here */ |
4e1e7fb9 JL |
5157 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); |
5158 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5159 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5160 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5161 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5162 | data_offset->Uid = cpu_to_le64(args->uid); | |
5163 | data_offset->Gid = cpu_to_le64(args->gid); | |
1da177e4 | 5164 | /* better to leave device as zero when it is */ |
4e1e7fb9 JL |
5165 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); |
5166 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
1da177e4 | 5167 | data_offset->Permissions = cpu_to_le64(mode); |
50c2f753 | 5168 | |
790fe579 | 5169 | if (S_ISREG(mode)) |
1da177e4 | 5170 | data_offset->Type = cpu_to_le32(UNIX_FILE); |
790fe579 | 5171 | else if (S_ISDIR(mode)) |
1da177e4 | 5172 | data_offset->Type = cpu_to_le32(UNIX_DIR); |
790fe579 | 5173 | else if (S_ISLNK(mode)) |
1da177e4 | 5174 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); |
790fe579 | 5175 | else if (S_ISCHR(mode)) |
1da177e4 | 5176 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); |
790fe579 | 5177 | else if (S_ISBLK(mode)) |
1da177e4 | 5178 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); |
790fe579 | 5179 | else if (S_ISFIFO(mode)) |
1da177e4 | 5180 | data_offset->Type = cpu_to_le32(UNIX_FIFO); |
790fe579 | 5181 | else if (S_ISSOCK(mode)) |
1da177e4 LT |
5182 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); |
5183 | ||
5184 | ||
5185 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5186 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5187 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5188 | if (rc) |
1da177e4 | 5189 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); |
1da177e4 | 5190 | |
0d817bc0 | 5191 | cifs_buf_release(pSMB); |
1da177e4 LT |
5192 | if (rc == -EAGAIN) |
5193 | goto setPermsRetry; | |
5194 | return rc; | |
5195 | } | |
5196 | ||
50c2f753 | 5197 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, |
167a251a | 5198 | const int notify_subdirs, const __u16 netfid, |
50c2f753 | 5199 | __u32 filter, struct file *pfile, int multishot, |
167a251a | 5200 | const struct nls_table *nls_codepage) |
1da177e4 LT |
5201 | { |
5202 | int rc = 0; | |
50c2f753 SF |
5203 | struct smb_com_transaction_change_notify_req *pSMB = NULL; |
5204 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
abb15b8a | 5205 | struct dir_notify_req *dnotify_req; |
1da177e4 LT |
5206 | int bytes_returned; |
5207 | ||
50c2f753 | 5208 | cFYI(1, ("In CIFSSMBNotify for file handle %d", (int)netfid)); |
1da177e4 | 5209 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
50c2f753 | 5210 | (void **) &pSMBr); |
1da177e4 LT |
5211 | if (rc) |
5212 | return rc; | |
5213 | ||
5214 | pSMB->TotalParameterCount = 0 ; | |
5215 | pSMB->TotalDataCount = 0; | |
5216 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5217 | /* BB find exact data count max from sess structure BB */ | |
5218 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
0a4b92c0 SF |
5219 | /* BB VERIFY verify which is correct for above BB */ |
5220 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5221 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5222 | ||
1da177e4 LT |
5223 | pSMB->MaxSetupCount = 4; |
5224 | pSMB->Reserved = 0; | |
5225 | pSMB->ParameterOffset = 0; | |
5226 | pSMB->DataCount = 0; | |
5227 | pSMB->DataOffset = 0; | |
5228 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5229 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5230 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 5231 | if (notify_subdirs) |
1da177e4 LT |
5232 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ |
5233 | pSMB->Reserved2 = 0; | |
5234 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5235 | pSMB->Fid = netfid; /* file handle always le */ | |
5236 | pSMB->ByteCount = 0; | |
5237 | ||
5238 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
133672ef SF |
5239 | (struct smb_hdr *)pSMBr, &bytes_returned, |
5240 | CIFS_ASYNC_OP); | |
1da177e4 LT |
5241 | if (rc) { |
5242 | cFYI(1, ("Error in Notify = %d", rc)); | |
ff5dbd9e SF |
5243 | } else { |
5244 | /* Add file to outstanding requests */ | |
50c2f753 | 5245 | /* BB change to kmem cache alloc */ |
5cbded58 | 5246 | dnotify_req = kmalloc( |
47c786e7 SF |
5247 | sizeof(struct dir_notify_req), |
5248 | GFP_KERNEL); | |
790fe579 | 5249 | if (dnotify_req) { |
47c786e7 SF |
5250 | dnotify_req->Pid = pSMB->hdr.Pid; |
5251 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5252 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5253 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5254 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5255 | dnotify_req->netfid = netfid; | |
5256 | dnotify_req->pfile = pfile; | |
5257 | dnotify_req->filter = filter; | |
5258 | dnotify_req->multishot = multishot; | |
5259 | spin_lock(&GlobalMid_Lock); | |
50c2f753 | 5260 | list_add_tail(&dnotify_req->lhead, |
47c786e7 SF |
5261 | &GlobalDnotifyReqList); |
5262 | spin_unlock(&GlobalMid_Lock); | |
50c2f753 | 5263 | } else |
47c786e7 | 5264 | rc = -ENOMEM; |
1da177e4 LT |
5265 | } |
5266 | cifs_buf_release(pSMB); | |
50c2f753 | 5267 | return rc; |
1da177e4 LT |
5268 | } |
5269 | #ifdef CONFIG_CIFS_XATTR | |
5270 | ssize_t | |
5271 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
5272 | const unsigned char *searchName, | |
50c2f753 | 5273 | char *EAData, size_t buf_size, |
737b758c | 5274 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5275 | { |
5276 | /* BB assumes one setup word */ | |
5277 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5278 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5279 | int rc = 0; | |
5280 | int bytes_returned; | |
5281 | int name_len; | |
50c2f753 SF |
5282 | struct fea *temp_fea; |
5283 | char *temp_ptr; | |
1da177e4 LT |
5284 | __u16 params, byte_count; |
5285 | ||
5286 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
5287 | QAllEAsRetry: | |
5288 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5289 | (void **) &pSMBr); | |
5290 | if (rc) | |
5291 | return rc; | |
5292 | ||
5293 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5294 | name_len = | |
50c2f753 | 5295 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5296 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5297 | name_len++; /* trailing null */ |
5298 | name_len *= 2; | |
5299 | } else { /* BB improve the check for buffer overruns BB */ | |
5300 | name_len = strnlen(searchName, PATH_MAX); | |
5301 | name_len++; /* trailing null */ | |
5302 | strncpy(pSMB->FileName, searchName, name_len); | |
5303 | } | |
5304 | ||
50c2f753 | 5305 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
5306 | pSMB->TotalDataCount = 0; |
5307 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5308 | /* BB find exact max SMB PDU from sess structure BB */ |
5309 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
5310 | pSMB->MaxSetupCount = 0; |
5311 | pSMB->Reserved = 0; | |
5312 | pSMB->Flags = 0; | |
5313 | pSMB->Timeout = 0; | |
5314 | pSMB->Reserved2 = 0; | |
5315 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5316 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5317 | pSMB->DataCount = 0; |
5318 | pSMB->DataOffset = 0; | |
5319 | pSMB->SetupCount = 1; | |
5320 | pSMB->Reserved3 = 0; | |
5321 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5322 | byte_count = params + 1 /* pad */ ; | |
5323 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5324 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5325 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5326 | pSMB->Reserved4 = 0; | |
5327 | pSMB->hdr.smb_buf_length += byte_count; | |
5328 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5329 | ||
5330 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5331 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5332 | if (rc) { | |
5333 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
5334 | } else { /* decode response */ | |
5335 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5336 | ||
5337 | /* BB also check enough total bytes returned */ | |
5338 | /* BB we need to improve the validity checking | |
5339 | of these trans2 responses */ | |
50c2f753 | 5340 | if (rc || (pSMBr->ByteCount < 4)) |
1da177e4 LT |
5341 | rc = -EIO; /* bad smb */ |
5342 | /* else if (pFindData){ | |
5343 | memcpy((char *) pFindData, | |
5344 | (char *) &pSMBr->hdr.Protocol + | |
5345 | data_offset, kl); | |
5346 | }*/ else { | |
5347 | /* check that length of list is not more than bcc */ | |
5348 | /* check that each entry does not go beyond length | |
5349 | of list */ | |
5350 | /* check that each element of each entry does not | |
5351 | go beyond end of list */ | |
5352 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 5353 | struct fealist *ea_response_data; |
1da177e4 LT |
5354 | rc = 0; |
5355 | /* validate_trans2_offsets() */ | |
790fe579 | 5356 | /* BB check if start of smb + data_offset > &bcc+ bcc */ |
1da177e4 LT |
5357 | ea_response_data = (struct fealist *) |
5358 | (((char *) &pSMBr->hdr.Protocol) + | |
5359 | data_offset); | |
5360 | name_len = le32_to_cpu(ea_response_data->list_len); | |
50c2f753 | 5361 | cFYI(1, ("ea length %d", name_len)); |
790fe579 | 5362 | if (name_len <= 8) { |
1da177e4 | 5363 | /* returned EA size zeroed at top of function */ |
50c2f753 | 5364 | cFYI(1, ("empty EA list returned from server")); |
1da177e4 LT |
5365 | } else { |
5366 | /* account for ea list len */ | |
5367 | name_len -= 4; | |
5368 | temp_fea = ea_response_data->list; | |
5369 | temp_ptr = (char *)temp_fea; | |
50c2f753 | 5370 | while (name_len > 0) { |
1da177e4 LT |
5371 | __u16 value_len; |
5372 | name_len -= 4; | |
5373 | temp_ptr += 4; | |
5374 | rc += temp_fea->name_len; | |
5375 | /* account for prefix user. and trailing null */ | |
790fe579 SF |
5376 | rc = rc + 5 + 1; |
5377 | if (rc < (int)buf_size) { | |
50c2f753 SF |
5378 | memcpy(EAData, "user.", 5); |
5379 | EAData += 5; | |
5380 | memcpy(EAData, temp_ptr, | |
5381 | temp_fea->name_len); | |
5382 | EAData += temp_fea->name_len; | |
1da177e4 LT |
5383 | /* null terminate name */ |
5384 | *EAData = 0; | |
5385 | EAData = EAData + 1; | |
790fe579 | 5386 | } else if (buf_size == 0) { |
1da177e4 LT |
5387 | /* skip copy - calc size only */ |
5388 | } else { | |
5389 | /* stop before overrun buffer */ | |
5390 | rc = -ERANGE; | |
5391 | break; | |
5392 | } | |
5393 | name_len -= temp_fea->name_len; | |
5394 | temp_ptr += temp_fea->name_len; | |
5395 | /* account for trailing null */ | |
5396 | name_len--; | |
5397 | temp_ptr++; | |
50c2f753 SF |
5398 | value_len = |
5399 | le16_to_cpu(temp_fea->value_len); | |
1da177e4 LT |
5400 | name_len -= value_len; |
5401 | temp_ptr += value_len; | |
50c2f753 SF |
5402 | /* BB check that temp_ptr is still |
5403 | within the SMB BB*/ | |
5404 | ||
5405 | /* no trailing null to account for | |
5406 | in value len */ | |
1da177e4 LT |
5407 | /* go on to next EA */ |
5408 | temp_fea = (struct fea *)temp_ptr; | |
5409 | } | |
5410 | } | |
5411 | } | |
5412 | } | |
0d817bc0 | 5413 | cifs_buf_release(pSMB); |
1da177e4 LT |
5414 | if (rc == -EAGAIN) |
5415 | goto QAllEAsRetry; | |
5416 | ||
5417 | return (ssize_t)rc; | |
5418 | } | |
5419 | ||
50c2f753 SF |
5420 | ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon, |
5421 | const unsigned char *searchName, const unsigned char *ea_name, | |
5422 | unsigned char *ea_value, size_t buf_size, | |
737b758c | 5423 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5424 | { |
5425 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5426 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5427 | int rc = 0; | |
5428 | int bytes_returned; | |
5429 | int name_len; | |
50c2f753 SF |
5430 | struct fea *temp_fea; |
5431 | char *temp_ptr; | |
1da177e4 LT |
5432 | __u16 params, byte_count; |
5433 | ||
5434 | cFYI(1, ("In Query EA path %s", searchName)); | |
5435 | QEARetry: | |
5436 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5437 | (void **) &pSMBr); | |
5438 | if (rc) | |
5439 | return rc; | |
5440 | ||
5441 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5442 | name_len = | |
50c2f753 | 5443 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, |
737b758c | 5444 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5445 | name_len++; /* trailing null */ |
5446 | name_len *= 2; | |
5447 | } else { /* BB improve the check for buffer overruns BB */ | |
5448 | name_len = strnlen(searchName, PATH_MAX); | |
5449 | name_len++; /* trailing null */ | |
5450 | strncpy(pSMB->FileName, searchName, name_len); | |
5451 | } | |
5452 | ||
50c2f753 | 5453 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
5454 | pSMB->TotalDataCount = 0; |
5455 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5456 | /* BB find exact max SMB PDU from sess structure BB */ |
5457 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
5458 | pSMB->MaxSetupCount = 0; |
5459 | pSMB->Reserved = 0; | |
5460 | pSMB->Flags = 0; | |
5461 | pSMB->Timeout = 0; | |
5462 | pSMB->Reserved2 = 0; | |
5463 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5464 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5465 | pSMB->DataCount = 0; |
5466 | pSMB->DataOffset = 0; | |
5467 | pSMB->SetupCount = 1; | |
5468 | pSMB->Reserved3 = 0; | |
5469 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5470 | byte_count = params + 1 /* pad */ ; | |
5471 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5472 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5473 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5474 | pSMB->Reserved4 = 0; | |
5475 | pSMB->hdr.smb_buf_length += byte_count; | |
5476 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5477 | ||
5478 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5479 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5480 | if (rc) { | |
5481 | cFYI(1, ("Send error in Query EA = %d", rc)); | |
5482 | } else { /* decode response */ | |
5483 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5484 | ||
5485 | /* BB also check enough total bytes returned */ | |
5486 | /* BB we need to improve the validity checking | |
5487 | of these trans2 responses */ | |
50c2f753 | 5488 | if (rc || (pSMBr->ByteCount < 4)) |
1da177e4 LT |
5489 | rc = -EIO; /* bad smb */ |
5490 | /* else if (pFindData){ | |
5491 | memcpy((char *) pFindData, | |
5492 | (char *) &pSMBr->hdr.Protocol + | |
5493 | data_offset, kl); | |
5494 | }*/ else { | |
5495 | /* check that length of list is not more than bcc */ | |
5496 | /* check that each entry does not go beyond length | |
5497 | of list */ | |
5498 | /* check that each element of each entry does not | |
5499 | go beyond end of list */ | |
5500 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
50c2f753 | 5501 | struct fealist *ea_response_data; |
1da177e4 LT |
5502 | rc = -ENODATA; |
5503 | /* validate_trans2_offsets() */ | |
790fe579 | 5504 | /* BB check if start of smb + data_offset > &bcc+ bcc*/ |
1da177e4 LT |
5505 | ea_response_data = (struct fealist *) |
5506 | (((char *) &pSMBr->hdr.Protocol) + | |
5507 | data_offset); | |
5508 | name_len = le32_to_cpu(ea_response_data->list_len); | |
50c2f753 | 5509 | cFYI(1, ("ea length %d", name_len)); |
790fe579 | 5510 | if (name_len <= 8) { |
1da177e4 | 5511 | /* returned EA size zeroed at top of function */ |
50c2f753 | 5512 | cFYI(1, ("empty EA list returned from server")); |
1da177e4 LT |
5513 | } else { |
5514 | /* account for ea list len */ | |
5515 | name_len -= 4; | |
5516 | temp_fea = ea_response_data->list; | |
5517 | temp_ptr = (char *)temp_fea; | |
5518 | /* loop through checking if we have a matching | |
5519 | name and then return the associated value */ | |
50c2f753 | 5520 | while (name_len > 0) { |
1da177e4 LT |
5521 | __u16 value_len; |
5522 | name_len -= 4; | |
5523 | temp_ptr += 4; | |
50c2f753 SF |
5524 | value_len = |
5525 | le16_to_cpu(temp_fea->value_len); | |
5526 | /* BB validate that value_len falls within SMB, | |
5527 | even though maximum for name_len is 255 */ | |
790fe579 | 5528 | if (memcmp(temp_fea->name, ea_name, |
1da177e4 LT |
5529 | temp_fea->name_len) == 0) { |
5530 | /* found a match */ | |
5531 | rc = value_len; | |
5532 | /* account for prefix user. and trailing null */ | |
790fe579 | 5533 | if (rc <= (int)buf_size) { |
1da177e4 LT |
5534 | memcpy(ea_value, |
5535 | temp_fea->name+temp_fea->name_len+1, | |
5536 | rc); | |
50c2f753 SF |
5537 | /* ea values, unlike ea |
5538 | names, are not null | |
5539 | terminated */ | |
790fe579 | 5540 | } else if (buf_size == 0) { |
1da177e4 LT |
5541 | /* skip copy - calc size only */ |
5542 | } else { | |
50c2f753 | 5543 | /* stop before overrun buffer */ |
1da177e4 LT |
5544 | rc = -ERANGE; |
5545 | } | |
5546 | break; | |
5547 | } | |
5548 | name_len -= temp_fea->name_len; | |
5549 | temp_ptr += temp_fea->name_len; | |
5550 | /* account for trailing null */ | |
5551 | name_len--; | |
5552 | temp_ptr++; | |
5553 | name_len -= value_len; | |
5554 | temp_ptr += value_len; | |
50c2f753 SF |
5555 | /* No trailing null to account for in |
5556 | value_len. Go on to next EA */ | |
1da177e4 LT |
5557 | temp_fea = (struct fea *)temp_ptr; |
5558 | } | |
50c2f753 | 5559 | } |
1da177e4 LT |
5560 | } |
5561 | } | |
0d817bc0 | 5562 | cifs_buf_release(pSMB); |
1da177e4 LT |
5563 | if (rc == -EAGAIN) |
5564 | goto QEARetry; | |
5565 | ||
5566 | return (ssize_t)rc; | |
5567 | } | |
5568 | ||
5569 | int | |
5570 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
50c2f753 SF |
5571 | const char *ea_name, const void *ea_value, |
5572 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5573 | int remap) | |
1da177e4 LT |
5574 | { |
5575 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5576 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5577 | struct fealist *parm_data; | |
5578 | int name_len; | |
5579 | int rc = 0; | |
5580 | int bytes_returned = 0; | |
5581 | __u16 params, param_offset, byte_count, offset, count; | |
5582 | ||
5583 | cFYI(1, ("In SetEA")); | |
5584 | SetEARetry: | |
5585 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5586 | (void **) &pSMBr); | |
5587 | if (rc) | |
5588 | return rc; | |
5589 | ||
5590 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5591 | name_len = | |
50c2f753 | 5592 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, |
737b758c | 5593 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5594 | name_len++; /* trailing null */ |
5595 | name_len *= 2; | |
50c2f753 | 5596 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5597 | name_len = strnlen(fileName, PATH_MAX); |
5598 | name_len++; /* trailing null */ | |
5599 | strncpy(pSMB->FileName, fileName, name_len); | |
5600 | } | |
5601 | ||
5602 | params = 6 + name_len; | |
5603 | ||
5604 | /* done calculating parms using name_len of file name, | |
5605 | now use name_len to calculate length of ea name | |
5606 | we are going to create in the inode xattrs */ | |
790fe579 | 5607 | if (ea_name == NULL) |
1da177e4 LT |
5608 | name_len = 0; |
5609 | else | |
50c2f753 | 5610 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5611 | |
dae5dbdb | 5612 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 5613 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5614 | /* BB find max SMB PDU from sess */ |
5615 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5616 | pSMB->MaxSetupCount = 0; |
5617 | pSMB->Reserved = 0; | |
5618 | pSMB->Flags = 0; | |
5619 | pSMB->Timeout = 0; | |
5620 | pSMB->Reserved2 = 0; | |
5621 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5622 | InformationLevel) - 4; |
1da177e4 LT |
5623 | offset = param_offset + params; |
5624 | pSMB->InformationLevel = | |
5625 | cpu_to_le16(SMB_SET_FILE_EA); | |
5626 | ||
5627 | parm_data = | |
5628 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5629 | offset); | |
5630 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5631 | pSMB->DataOffset = cpu_to_le16(offset); | |
5632 | pSMB->SetupCount = 1; | |
5633 | pSMB->Reserved3 = 0; | |
5634 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5635 | byte_count = 3 /* pad */ + params + count; | |
5636 | pSMB->DataCount = cpu_to_le16(count); | |
5637 | parm_data->list_len = cpu_to_le32(count); | |
5638 | parm_data->list[0].EA_flags = 0; | |
5639 | /* we checked above that name len is less than 255 */ | |
53b3531b | 5640 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 5641 | /* EA names are always ASCII */ |
790fe579 | 5642 | if (ea_name) |
50c2f753 | 5643 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
5644 | parm_data->list[0].name[name_len] = 0; |
5645 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5646 | /* caller ensures that ea_value_len is less than 64K but | |
5647 | we need to ensure that it fits within the smb */ | |
5648 | ||
50c2f753 SF |
5649 | /*BB add length check to see if it would fit in |
5650 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5651 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5652 | if (ea_value_len) | |
50c2f753 SF |
5653 | memcpy(parm_data->list[0].name+name_len+1, |
5654 | ea_value, ea_value_len); | |
1da177e4 LT |
5655 | |
5656 | pSMB->TotalDataCount = pSMB->DataCount; | |
5657 | pSMB->ParameterCount = cpu_to_le16(params); | |
5658 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5659 | pSMB->Reserved4 = 0; | |
5660 | pSMB->hdr.smb_buf_length += byte_count; | |
5661 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5662 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5663 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5664 | if (rc) |
1da177e4 | 5665 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); |
1da177e4 LT |
5666 | |
5667 | cifs_buf_release(pSMB); | |
5668 | ||
5669 | if (rc == -EAGAIN) | |
5670 | goto SetEARetry; | |
5671 | ||
5672 | return rc; | |
5673 | } | |
5674 | ||
5675 | #endif |