Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
27 | /* treated slightly differently for reconnection purposes since we never */ |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
29 | |
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 | 34 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 35 | #include <linux/pagemap.h> |
e28bc5b1 JL |
36 | #include <linux/swap.h> |
37 | #include <linux/task_io_accounting_ops.h> | |
1da177e4 LT |
38 | #include <asm/uaccess.h> |
39 | #include "cifspdu.h" | |
40 | #include "cifsglob.h" | |
d0d66c44 | 41 | #include "cifsacl.h" |
1da177e4 LT |
42 | #include "cifsproto.h" |
43 | #include "cifs_unicode.h" | |
44 | #include "cifs_debug.h" | |
e28bc5b1 | 45 | #include "fscache.h" |
1da177e4 LT |
46 | |
47 | #ifdef CONFIG_CIFS_POSIX | |
48 | static struct { | |
49 | int index; | |
50 | char *name; | |
51 | } protocols[] = { | |
3979877e SF |
52 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
53 | {LANMAN_PROT, "\2LM1.2X002"}, | |
9ac00b7d | 54 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 55 | #endif /* weak password hashing for legacy clients */ |
50c2f753 | 56 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 57 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
58 | {BAD_PROT, "\2"} |
59 | }; | |
60 | #else | |
61 | static struct { | |
62 | int index; | |
63 | char *name; | |
64 | } protocols[] = { | |
3979877e SF |
65 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
66 | {LANMAN_PROT, "\2LM1.2X002"}, | |
18f75ca0 | 67 | {LANMAN2_PROT, "\2LANMAN2.1"}, |
3979877e | 68 | #endif /* weak password hashing for legacy clients */ |
790fe579 | 69 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
70 | {BAD_PROT, "\2"} |
71 | }; | |
72 | #endif | |
73 | ||
3979877e SF |
74 | /* define the number of elements in the cifs dialect array */ |
75 | #ifdef CONFIG_CIFS_POSIX | |
76 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 77 | #define CIFS_NUM_PROT 4 |
3979877e SF |
78 | #else |
79 | #define CIFS_NUM_PROT 2 | |
80 | #endif /* CIFS_WEAK_PW_HASH */ | |
81 | #else /* not posix */ | |
82 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
9ac00b7d | 83 | #define CIFS_NUM_PROT 3 |
3979877e SF |
84 | #else |
85 | #define CIFS_NUM_PROT 1 | |
86 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
87 | #endif /* CIFS_POSIX */ | |
88 | ||
e28bc5b1 JL |
89 | /* Forward declarations */ |
90 | static void cifs_readv_complete(struct work_struct *work); | |
91 | ||
1da177e4 LT |
92 | /* Mark as invalid, all open files on tree connections since they |
93 | were closed when session to server was lost */ | |
96daf2b0 | 94 | static void mark_open_files_invalid(struct cifs_tcon *pTcon) |
1da177e4 LT |
95 | { |
96 | struct cifsFileInfo *open_file = NULL; | |
790fe579 SF |
97 | struct list_head *tmp; |
98 | struct list_head *tmp1; | |
1da177e4 LT |
99 | |
100 | /* list all files open on tree connection and mark them invalid */ | |
4477288a | 101 | spin_lock(&cifs_file_list_lock); |
1da177e4 | 102 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { |
790fe579 | 103 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
ad8b15f0 | 104 | open_file->invalidHandle = true; |
3bc303c2 | 105 | open_file->oplock_break_cancelled = true; |
1da177e4 | 106 | } |
4477288a | 107 | spin_unlock(&cifs_file_list_lock); |
09d1db5c SF |
108 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
109 | to this tcon */ | |
1da177e4 LT |
110 | } |
111 | ||
9162ab20 JL |
112 | /* reconnect the socket, tcon, and smb session if needed */ |
113 | static int | |
96daf2b0 | 114 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 115 | { |
c4a5534a | 116 | int rc; |
96daf2b0 | 117 | struct cifs_ses *ses; |
9162ab20 JL |
118 | struct TCP_Server_Info *server; |
119 | struct nls_table *nls_codepage; | |
120 | ||
121 | /* | |
122 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
123 | * tcp and smb session status done differently for those three - in the | |
124 | * calling routine | |
125 | */ | |
126 | if (!tcon) | |
127 | return 0; | |
128 | ||
129 | ses = tcon->ses; | |
130 | server = ses->server; | |
131 | ||
132 | /* | |
133 | * only tree disconnect, open, and write, (and ulogoff which does not | |
134 | * have tcon) are allowed as we start force umount | |
135 | */ | |
136 | if (tcon->tidStatus == CifsExiting) { | |
137 | if (smb_command != SMB_COM_WRITE_ANDX && | |
138 | smb_command != SMB_COM_OPEN_ANDX && | |
139 | smb_command != SMB_COM_TREE_DISCONNECT) { | |
b6b38f70 JP |
140 | cFYI(1, "can not send cmd %d while umounting", |
141 | smb_command); | |
9162ab20 JL |
142 | return -ENODEV; |
143 | } | |
144 | } | |
145 | ||
9162ab20 JL |
146 | /* |
147 | * Give demultiplex thread up to 10 seconds to reconnect, should be | |
148 | * greater than cifs socket timeout which is 7 seconds | |
149 | */ | |
150 | while (server->tcpStatus == CifsNeedReconnect) { | |
151 | wait_event_interruptible_timeout(server->response_q, | |
fd88ce93 | 152 | (server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
9162ab20 | 153 | |
fd88ce93 | 154 | /* are we still trying to reconnect? */ |
9162ab20 JL |
155 | if (server->tcpStatus != CifsNeedReconnect) |
156 | break; | |
157 | ||
158 | /* | |
159 | * on "soft" mounts we wait once. Hard mounts keep | |
160 | * retrying until process is killed or server comes | |
161 | * back on-line | |
162 | */ | |
d402539b | 163 | if (!tcon->retry) { |
b6b38f70 | 164 | cFYI(1, "gave up waiting on reconnect in smb_init"); |
9162ab20 JL |
165 | return -EHOSTDOWN; |
166 | } | |
167 | } | |
168 | ||
169 | if (!ses->need_reconnect && !tcon->need_reconnect) | |
170 | return 0; | |
171 | ||
172 | nls_codepage = load_nls_default(); | |
173 | ||
174 | /* | |
175 | * need to prevent multiple threads trying to simultaneously | |
176 | * reconnect the same SMB session | |
177 | */ | |
d7b619cf | 178 | mutex_lock(&ses->session_mutex); |
198b5682 JL |
179 | rc = cifs_negotiate_protocol(0, ses); |
180 | if (rc == 0 && ses->need_reconnect) | |
9162ab20 JL |
181 | rc = cifs_setup_session(0, ses, nls_codepage); |
182 | ||
183 | /* do we need to reconnect tcon? */ | |
184 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 185 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
186 | goto out; |
187 | } | |
188 | ||
189 | mark_open_files_invalid(tcon); | |
190 | rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); | |
d7b619cf | 191 | mutex_unlock(&ses->session_mutex); |
b6b38f70 | 192 | cFYI(1, "reconnect tcon rc = %d", rc); |
9162ab20 JL |
193 | |
194 | if (rc) | |
195 | goto out; | |
196 | ||
197 | /* | |
198 | * FIXME: check if wsize needs updated due to negotiated smb buffer | |
199 | * size shrinking | |
200 | */ | |
201 | atomic_inc(&tconInfoReconnectCount); | |
202 | ||
203 | /* tell server Unix caps we support */ | |
204 | if (ses->capabilities & CAP_UNIX) | |
205 | reset_cifs_unix_caps(0, tcon, NULL, NULL); | |
206 | ||
207 | /* | |
208 | * Removed call to reopen open files here. It is safer (and faster) to | |
209 | * reopen files one at a time as needed in read and write. | |
210 | * | |
211 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
212 | */ | |
213 | ||
214 | out: | |
215 | /* | |
216 | * Check if handle based operation so we know whether we can continue | |
217 | * or not without returning to caller to reset file handle | |
218 | */ | |
219 | switch (smb_command) { | |
220 | case SMB_COM_READ_ANDX: | |
221 | case SMB_COM_WRITE_ANDX: | |
222 | case SMB_COM_CLOSE: | |
223 | case SMB_COM_FIND_CLOSE2: | |
224 | case SMB_COM_LOCKING_ANDX: | |
225 | rc = -EAGAIN; | |
226 | } | |
227 | ||
228 | unload_nls(nls_codepage); | |
229 | return rc; | |
230 | } | |
231 | ||
ad7a2926 SF |
232 | /* Allocate and return pointer to an SMB request buffer, and set basic |
233 | SMB information in the SMB header. If the return code is zero, this | |
234 | function must have filled in request_buf pointer */ | |
1da177e4 | 235 | static int |
96daf2b0 | 236 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 237 | void **request_buf) |
1da177e4 | 238 | { |
f569599a | 239 | int rc; |
1da177e4 | 240 | |
9162ab20 | 241 | rc = cifs_reconnect_tcon(tcon, smb_command); |
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 | |
f569599a | 257 | return 0; |
5815449d SF |
258 | } |
259 | ||
12b3b8ff | 260 | int |
50c2f753 | 261 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 262 | struct cifs_ses *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 | |
96daf2b0 | 288 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 289 | void **request_buf, void **response_buf) |
1da177e4 | 290 | { |
1da177e4 LT |
291 | *request_buf = cifs_buf_get(); |
292 | if (*request_buf == NULL) { | |
293 | /* BB should we add a retry in here if not a writepage? */ | |
294 | return -ENOMEM; | |
295 | } | |
296 | /* Although the original thought was we needed the response buf for */ | |
297 | /* potential retries of smb operations it turns out we can determine */ | |
298 | /* from the mid flags when the request buffer can be resent without */ | |
299 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 300 | if (response_buf) |
50c2f753 | 301 | *response_buf = *request_buf; |
1da177e4 LT |
302 | |
303 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 304 | wct); |
1da177e4 | 305 | |
790fe579 SF |
306 | if (tcon != NULL) |
307 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 308 | |
f569599a JL |
309 | return 0; |
310 | } | |
311 | ||
312 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
313 | static int | |
96daf2b0 | 314 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
315 | void **request_buf, void **response_buf) |
316 | { | |
317 | int rc; | |
318 | ||
319 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
320 | if (rc) | |
321 | return rc; | |
322 | ||
323 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
324 | } | |
325 | ||
326 | static int | |
96daf2b0 | 327 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
328 | void **request_buf, void **response_buf) |
329 | { | |
330 | if (tcon->ses->need_reconnect || tcon->need_reconnect) | |
331 | return -EHOSTDOWN; | |
332 | ||
333 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
334 | } |
335 | ||
50c2f753 | 336 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 337 | { |
12df83c9 JL |
338 | unsigned int total_size; |
339 | ||
340 | /* check for plausible wct */ | |
341 | if (pSMB->hdr.WordCount < 10) | |
342 | goto vt2_err; | |
1da177e4 | 343 | |
1da177e4 | 344 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
345 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
346 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
347 | goto vt2_err; | |
348 | ||
12df83c9 JL |
349 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
350 | if (total_size >= 512) | |
351 | goto vt2_err; | |
352 | ||
fd5707e1 JL |
353 | /* check that bcc is at least as big as parms + data, and that it is |
354 | * less than negotiated smb buffer | |
355 | */ | |
12df83c9 JL |
356 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
357 | if (total_size > get_bcc(&pSMB->hdr) || | |
358 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
359 | goto vt2_err; | |
360 | ||
361 | return 0; | |
362 | vt2_err: | |
50c2f753 | 363 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 364 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 365 | return -EINVAL; |
1da177e4 | 366 | } |
690c522f | 367 | |
be8e3b00 SF |
368 | static inline void inc_rfc1001_len(void *pSMB, int count) |
369 | { | |
370 | struct smb_hdr *hdr = (struct smb_hdr *)pSMB; | |
371 | ||
372 | be32_add_cpu(&hdr->smb_buf_length, count); | |
373 | } | |
374 | ||
1da177e4 | 375 | int |
96daf2b0 | 376 | CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) |
1da177e4 LT |
377 | { |
378 | NEGOTIATE_REQ *pSMB; | |
379 | NEGOTIATE_RSP *pSMBr; | |
380 | int rc = 0; | |
381 | int bytes_returned; | |
3979877e | 382 | int i; |
50c2f753 | 383 | struct TCP_Server_Info *server; |
1da177e4 | 384 | u16 count; |
750d1151 | 385 | unsigned int secFlags; |
1da177e4 | 386 | |
790fe579 | 387 | if (ses->server) |
1da177e4 LT |
388 | server = ses->server; |
389 | else { | |
390 | rc = -EIO; | |
391 | return rc; | |
392 | } | |
393 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
394 | (void **) &pSMB, (void **) &pSMBr); | |
395 | if (rc) | |
396 | return rc; | |
750d1151 SF |
397 | |
398 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
790fe579 | 399 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
762e5ab7 | 400 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ |
750d1151 | 401 | else /* if override flags set only sign/seal OR them with global auth */ |
04912d6a | 402 | secFlags = global_secflags | ses->overrideSecFlg; |
750d1151 | 403 | |
b6b38f70 | 404 | cFYI(1, "secFlags 0x%x", secFlags); |
f40c5628 | 405 | |
1982c344 | 406 | pSMB->hdr.Mid = GetNextMid(server); |
100c1ddc | 407 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 408 | |
100c1ddc | 409 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) |
254e55ed | 410 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
a013689d | 411 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { |
b6b38f70 | 412 | cFYI(1, "Kerberos only mechanism, enable extended security"); |
a013689d | 413 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
b4d6fcf1 | 414 | } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) |
ac683924 SF |
415 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
416 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) { | |
b6b38f70 | 417 | cFYI(1, "NTLMSSP only mechanism, enable extended security"); |
ac683924 SF |
418 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
419 | } | |
50c2f753 | 420 | |
3979877e | 421 | count = 0; |
50c2f753 | 422 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e SF |
423 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); |
424 | count += strlen(protocols[i].name) + 1; | |
425 | /* null at end of source and target buffers anyway */ | |
426 | } | |
be8e3b00 | 427 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
428 | pSMB->ByteCount = cpu_to_le16(count); |
429 | ||
430 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
431 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 432 | if (rc != 0) |
254e55ed SF |
433 | goto neg_err_exit; |
434 | ||
9bf67e51 JL |
435 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
436 | cFYI(1, "Dialect: %d", server->dialect); | |
254e55ed | 437 | /* Check wct = 1 error case */ |
9bf67e51 | 438 | if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 439 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 440 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
441 | could not negotiate a common dialect */ |
442 | rc = -EOPNOTSUPP; | |
443 | goto neg_err_exit; | |
50c2f753 | 444 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
790fe579 | 445 | } else if ((pSMBr->hdr.WordCount == 13) |
9bf67e51 JL |
446 | && ((server->dialect == LANMAN_PROT) |
447 | || (server->dialect == LANMAN2_PROT))) { | |
b815f1e5 | 448 | __s16 tmp; |
50c2f753 | 449 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
254e55ed | 450 | |
790fe579 | 451 | if ((secFlags & CIFSSEC_MAY_LANMAN) || |
750d1151 | 452 | (secFlags & CIFSSEC_MAY_PLNTXT)) |
254e55ed SF |
453 | server->secType = LANMAN; |
454 | else { | |
b6b38f70 JP |
455 | cERROR(1, "mount failed weak security disabled" |
456 | " in /proc/fs/cifs/SecurityFlags"); | |
3979877e SF |
457 | rc = -EOPNOTSUPP; |
458 | goto neg_err_exit; | |
50c2f753 | 459 | } |
96daf2b0 | 460 | server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode); |
10b9b98e PS |
461 | server->maxReq = min_t(unsigned int, |
462 | le16_to_cpu(rsp->MaxMpxCount), | |
463 | cifs_max_pending); | |
2d86dbc9 | 464 | cifs_set_credits(server, server->maxReq); |
c974befa | 465 | server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
eca6acf9 | 466 | server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); |
254e55ed SF |
467 | /* even though we do not use raw we might as well set this |
468 | accurately, in case we ever find a need for it */ | |
790fe579 | 469 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
eca6acf9 | 470 | server->max_rw = 0xFF00; |
254e55ed SF |
471 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
472 | } else { | |
eca6acf9 | 473 | server->max_rw = 0;/* do not need to use raw anyway */ |
254e55ed SF |
474 | server->capabilities = CAP_MPX_MODE; |
475 | } | |
b815f1e5 | 476 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
1a70d652 | 477 | if (tmp == -1) { |
25ee4a98 SF |
478 | /* OS/2 often does not set timezone therefore |
479 | * we must use server time to calc time zone. | |
b815f1e5 SF |
480 | * Could deviate slightly from the right zone. |
481 | * Smallest defined timezone difference is 15 minutes | |
482 | * (i.e. Nepal). Rounding up/down is done to match | |
483 | * this requirement. | |
25ee4a98 | 484 | */ |
b815f1e5 | 485 | int val, seconds, remain, result; |
25ee4a98 SF |
486 | struct timespec ts, utc; |
487 | utc = CURRENT_TIME; | |
c4a2c08d JL |
488 | ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
489 | rsp->SrvTime.Time, 0); | |
b6b38f70 | 490 | cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d", |
50c2f753 | 491 | (int)ts.tv_sec, (int)utc.tv_sec, |
b6b38f70 | 492 | (int)(utc.tv_sec - ts.tv_sec)); |
b815f1e5 | 493 | val = (int)(utc.tv_sec - ts.tv_sec); |
8594c15a | 494 | seconds = abs(val); |
947a5067 | 495 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
b815f1e5 | 496 | remain = seconds % MIN_TZ_ADJ; |
790fe579 | 497 | if (remain >= (MIN_TZ_ADJ / 2)) |
b815f1e5 | 498 | result += MIN_TZ_ADJ; |
790fe579 | 499 | if (val < 0) |
ad7a2926 | 500 | result = -result; |
b815f1e5 | 501 | server->timeAdj = result; |
25ee4a98 | 502 | } else { |
b815f1e5 SF |
503 | server->timeAdj = (int)tmp; |
504 | server->timeAdj *= 60; /* also in seconds */ | |
25ee4a98 | 505 | } |
b6b38f70 | 506 | cFYI(1, "server->timeAdj: %d seconds", server->timeAdj); |
25ee4a98 | 507 | |
3979877e | 508 | |
254e55ed | 509 | /* BB get server time for time conversions and add |
50c2f753 | 510 | code to use it and timezone since this is not UTC */ |
3979877e | 511 | |
50c2f753 | 512 | if (rsp->EncryptionKeyLength == |
25ee4a98 | 513 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
d3ba50b1 | 514 | memcpy(ses->server->cryptkey, rsp->EncryptionKey, |
254e55ed | 515 | CIFS_CRYPTO_KEY_SIZE); |
96daf2b0 | 516 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
254e55ed SF |
517 | rc = -EIO; /* need cryptkey unless plain text */ |
518 | goto neg_err_exit; | |
519 | } | |
3979877e | 520 | |
f19159dc | 521 | cFYI(1, "LANMAN negotiated"); |
254e55ed SF |
522 | /* we will not end up setting signing flags - as no signing |
523 | was in LANMAN and server did not return the flags on */ | |
524 | goto signing_check; | |
7c7b25bc | 525 | #else /* weak security disabled */ |
790fe579 | 526 | } else if (pSMBr->hdr.WordCount == 13) { |
f19159dc SF |
527 | cERROR(1, "mount failed, cifs module not built " |
528 | "with CIFS_WEAK_PW_HASH support"); | |
8212cf75 | 529 | rc = -EOPNOTSUPP; |
7c7b25bc | 530 | #endif /* WEAK_PW_HASH */ |
254e55ed | 531 | goto neg_err_exit; |
790fe579 | 532 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
533 | /* unknown wct */ |
534 | rc = -EOPNOTSUPP; | |
535 | goto neg_err_exit; | |
536 | } | |
537 | /* else wct == 17 NTLM */ | |
96daf2b0 SF |
538 | server->sec_mode = pSMBr->SecurityMode; |
539 | if ((server->sec_mode & SECMODE_USER) == 0) | |
b6b38f70 | 540 | cFYI(1, "share mode security"); |
bdc4bf6e | 541 | |
96daf2b0 | 542 | if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0) |
bdc4bf6e | 543 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
750d1151 | 544 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) |
bdc4bf6e | 545 | #endif /* CIFS_WEAK_PW_HASH */ |
b6b38f70 JP |
546 | cERROR(1, "Server requests plain text password" |
547 | " but client support disabled"); | |
9312f675 | 548 | |
790fe579 | 549 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) |
254e55ed | 550 | server->secType = NTLMv2; |
790fe579 | 551 | else if (secFlags & CIFSSEC_MAY_NTLM) |
254e55ed | 552 | server->secType = NTLM; |
790fe579 | 553 | else if (secFlags & CIFSSEC_MAY_NTLMV2) |
f40c5628 | 554 | server->secType = NTLMv2; |
a013689d SF |
555 | else if (secFlags & CIFSSEC_MAY_KRB5) |
556 | server->secType = Kerberos; | |
ac683924 | 557 | else if (secFlags & CIFSSEC_MAY_NTLMSSP) |
f46c7234 | 558 | server->secType = RawNTLMSSP; |
a013689d SF |
559 | else if (secFlags & CIFSSEC_MAY_LANMAN) |
560 | server->secType = LANMAN; | |
a013689d SF |
561 | else { |
562 | rc = -EOPNOTSUPP; | |
b6b38f70 | 563 | cERROR(1, "Invalid security type"); |
a013689d SF |
564 | goto neg_err_exit; |
565 | } | |
566 | /* else ... any others ...? */ | |
254e55ed SF |
567 | |
568 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
569 | little endian */ | |
10b9b98e PS |
570 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
571 | cifs_max_pending); | |
2d86dbc9 | 572 | cifs_set_credits(server, server->maxReq); |
254e55ed | 573 | /* probably no need to store and check maxvcs */ |
c974befa | 574 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf9 | 575 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
b6b38f70 | 576 | cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); |
254e55ed | 577 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
578 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
579 | server->timeAdj *= 60; | |
254e55ed | 580 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
d3ba50b1 | 581 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 582 | CIFS_CRYPTO_KEY_SIZE); |
07cc6cf9 SF |
583 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
584 | server->capabilities & CAP_EXTENDED_SECURITY) && | |
585 | (pSMBr->EncryptionKeyLength == 0)) { | |
254e55ed | 586 | /* decode security blob */ |
820a803f | 587 | count = get_bcc(&pSMBr->hdr); |
e187e44e | 588 | if (count < 16) { |
254e55ed | 589 | rc = -EIO; |
e187e44e JL |
590 | goto neg_err_exit; |
591 | } | |
3f9bcca7 | 592 | spin_lock(&cifs_tcp_ses_lock); |
e7ddee90 | 593 | if (server->srv_count > 1) { |
3f9bcca7 | 594 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
595 | if (memcmp(server->server_GUID, |
596 | pSMBr->u.extended_response. | |
597 | GUID, 16) != 0) { | |
b6b38f70 | 598 | cFYI(1, "server UID changed"); |
254e55ed | 599 | memcpy(server->server_GUID, |
e187e44e JL |
600 | pSMBr->u.extended_response.GUID, |
601 | 16); | |
602 | } | |
e7ddee90 | 603 | } else { |
3f9bcca7 | 604 | spin_unlock(&cifs_tcp_ses_lock); |
e187e44e JL |
605 | memcpy(server->server_GUID, |
606 | pSMBr->u.extended_response.GUID, 16); | |
e7ddee90 | 607 | } |
e187e44e JL |
608 | |
609 | if (count == 16) { | |
610 | server->secType = RawNTLMSSP; | |
254e55ed SF |
611 | } else { |
612 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
26efa0ba JL |
613 | SecurityBlob, count - 16, |
614 | server); | |
ef571cad | 615 | if (rc == 1) |
e545937a | 616 | rc = 0; |
ef571cad | 617 | else |
254e55ed | 618 | rc = -EINVAL; |
2b149f11 SP |
619 | if (server->secType == Kerberos) { |
620 | if (!server->sec_kerberos && | |
621 | !server->sec_mskerberos) | |
622 | rc = -EOPNOTSUPP; | |
623 | } else if (server->secType == RawNTLMSSP) { | |
624 | if (!server->sec_ntlmssp) | |
625 | rc = -EOPNOTSUPP; | |
626 | } else | |
627 | rc = -EOPNOTSUPP; | |
1da177e4 | 628 | } |
96daf2b0 | 629 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 SF |
630 | rc = -EIO; /* no crypt key only if plain text pwd */ |
631 | goto neg_err_exit; | |
254e55ed SF |
632 | } else |
633 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
634 | ||
6344a423 | 635 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
254e55ed | 636 | signing_check: |
6344a423 | 637 | #endif |
762e5ab7 SF |
638 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { |
639 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
640 | so if this is zero it means that signing is disabled */ | |
b6b38f70 | 641 | cFYI(1, "Signing disabled"); |
96daf2b0 | 642 | if (server->sec_mode & SECMODE_SIGN_REQUIRED) { |
b6b38f70 | 643 | cERROR(1, "Server requires " |
7111d214 | 644 | "packet signing to be enabled in " |
b6b38f70 | 645 | "/proc/fs/cifs/SecurityFlags."); |
abb63d6c SF |
646 | rc = -EOPNOTSUPP; |
647 | } | |
96daf2b0 | 648 | server->sec_mode &= |
254e55ed | 649 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
762e5ab7 SF |
650 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { |
651 | /* signing required */ | |
b6b38f70 | 652 | cFYI(1, "Must sign - secFlags 0x%x", secFlags); |
96daf2b0 | 653 | if ((server->sec_mode & |
762e5ab7 | 654 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { |
b6b38f70 | 655 | cERROR(1, "signing required but server lacks support"); |
38c10a1d | 656 | rc = -EOPNOTSUPP; |
762e5ab7 | 657 | } else |
96daf2b0 | 658 | server->sec_mode |= SECMODE_SIGN_REQUIRED; |
762e5ab7 SF |
659 | } else { |
660 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
96daf2b0 SF |
661 | if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0) |
662 | server->sec_mode &= | |
254e55ed | 663 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); |
1da177e4 | 664 | } |
50c2f753 SF |
665 | |
666 | neg_err_exit: | |
4a6d87f1 | 667 | cifs_buf_release(pSMB); |
254e55ed | 668 | |
b6b38f70 | 669 | cFYI(1, "negprot rc %d", rc); |
1da177e4 LT |
670 | return rc; |
671 | } | |
672 | ||
673 | int | |
96daf2b0 | 674 | CIFSSMBTDis(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
675 | { |
676 | struct smb_hdr *smb_buffer; | |
1da177e4 | 677 | int rc = 0; |
1da177e4 | 678 | |
b6b38f70 | 679 | cFYI(1, "In tree disconnect"); |
1da177e4 | 680 | |
f1987b44 JL |
681 | /* BB: do we need to check this? These should never be NULL. */ |
682 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
683 | return -EIO; | |
1da177e4 | 684 | |
f1987b44 JL |
685 | /* |
686 | * No need to return error on this operation if tid invalidated and | |
687 | * closed on server already e.g. due to tcp session crashing. Also, | |
688 | * the tcon is no longer on the list, so no need to take lock before | |
689 | * checking this. | |
690 | */ | |
268875b9 | 691 | if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f753 | 692 | return 0; |
1da177e4 | 693 | |
50c2f753 | 694 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 695 | (void **)&smb_buffer); |
f1987b44 | 696 | if (rc) |
1da177e4 | 697 | return rc; |
133672ef | 698 | |
792af7b0 | 699 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4 | 700 | if (rc) |
b6b38f70 | 701 | cFYI(1, "Tree disconnect failed %d", rc); |
1da177e4 | 702 | |
50c2f753 | 703 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 704 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
705 | if (rc == -EAGAIN) |
706 | rc = 0; | |
707 | ||
708 | return rc; | |
709 | } | |
710 | ||
766fdbb5 JL |
711 | /* |
712 | * This is a no-op for now. We're not really interested in the reply, but | |
713 | * rather in the fact that the server sent one and that server->lstrp | |
714 | * gets updated. | |
715 | * | |
716 | * FIXME: maybe we should consider checking that the reply matches request? | |
717 | */ | |
718 | static void | |
719 | cifs_echo_callback(struct mid_q_entry *mid) | |
720 | { | |
721 | struct TCP_Server_Info *server = mid->callback_data; | |
722 | ||
723 | DeleteMidQEntry(mid); | |
2d86dbc9 | 724 | cifs_add_credits(server, 1); |
766fdbb5 JL |
725 | } |
726 | ||
727 | int | |
728 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
729 | { | |
730 | ECHO_REQ *smb; | |
731 | int rc = 0; | |
fcc31cb6 | 732 | struct kvec iov; |
766fdbb5 JL |
733 | |
734 | cFYI(1, "In echo request"); | |
735 | ||
736 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
737 | if (rc) | |
738 | return rc; | |
739 | ||
740 | /* set up echo request */ | |
5443d130 | 741 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
742 | smb->hdr.WordCount = 1; |
743 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 744 | put_bcc(1, &smb->hdr); |
766fdbb5 | 745 | smb->Data[0] = 'a'; |
be8e3b00 | 746 | inc_rfc1001_len(smb, 3); |
fcc31cb6 JL |
747 | iov.iov_base = smb; |
748 | iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
766fdbb5 | 749 | |
44d22d84 JL |
750 | rc = cifs_call_async(server, &iov, 1, NULL, cifs_echo_callback, |
751 | server, true); | |
766fdbb5 JL |
752 | if (rc) |
753 | cFYI(1, "Echo request failed: %d", rc); | |
754 | ||
755 | cifs_small_buf_release(smb); | |
756 | ||
757 | return rc; | |
758 | } | |
759 | ||
1da177e4 | 760 | int |
96daf2b0 | 761 | CIFSSMBLogoff(const int xid, struct cifs_ses *ses) |
1da177e4 | 762 | { |
1da177e4 LT |
763 | LOGOFF_ANDX_REQ *pSMB; |
764 | int rc = 0; | |
1da177e4 | 765 | |
b6b38f70 | 766 | cFYI(1, "In SMBLogoff for session disconnect"); |
3b795210 | 767 | |
14fbf50d JL |
768 | /* |
769 | * BB: do we need to check validity of ses and server? They should | |
770 | * always be valid since we have an active reference. If not, that | |
771 | * should probably be a BUG() | |
772 | */ | |
773 | if (!ses || !ses->server) | |
3b795210 SF |
774 | return -EIO; |
775 | ||
d7b619cf | 776 | mutex_lock(&ses->session_mutex); |
3b795210 SF |
777 | if (ses->need_reconnect) |
778 | goto session_already_dead; /* no need to send SMBlogoff if uid | |
779 | already closed due to reconnect */ | |
1da177e4 LT |
780 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
781 | if (rc) { | |
d7b619cf | 782 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
783 | return rc; |
784 | } | |
785 | ||
3b795210 | 786 | pSMB->hdr.Mid = GetNextMid(ses->server); |
1982c344 | 787 | |
96daf2b0 | 788 | if (ses->server->sec_mode & |
1da177e4 LT |
789 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
790 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
791 | |
792 | pSMB->hdr.Uid = ses->Suid; | |
793 | ||
794 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 795 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b795210 | 796 | session_already_dead: |
d7b619cf | 797 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
798 | |
799 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 800 | since server closed smb session, no sense reporting |
1da177e4 LT |
801 | error */ |
802 | if (rc == -EAGAIN) | |
803 | rc = 0; | |
804 | return rc; | |
805 | } | |
806 | ||
2d785a50 | 807 | int |
96daf2b0 | 808 | CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
2d785a50 SF |
809 | __u16 type, const struct nls_table *nls_codepage, int remap) |
810 | { | |
811 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
812 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
813 | struct unlink_psx_rq *pRqD; | |
814 | int name_len; | |
815 | int rc = 0; | |
816 | int bytes_returned = 0; | |
817 | __u16 params, param_offset, offset, byte_count; | |
818 | ||
b6b38f70 | 819 | cFYI(1, "In POSIX delete"); |
2d785a50 SF |
820 | PsxDelete: |
821 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
822 | (void **) &pSMBr); | |
823 | if (rc) | |
824 | return rc; | |
825 | ||
826 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
827 | name_len = | |
acbbb76a SF |
828 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
829 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
830 | name_len++; /* trailing null */ |
831 | name_len *= 2; | |
832 | } else { /* BB add path length overrun check */ | |
833 | name_len = strnlen(fileName, PATH_MAX); | |
834 | name_len++; /* trailing null */ | |
835 | strncpy(pSMB->FileName, fileName, name_len); | |
836 | } | |
837 | ||
838 | params = 6 + name_len; | |
839 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
840 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
841 | pSMB->MaxSetupCount = 0; | |
842 | pSMB->Reserved = 0; | |
843 | pSMB->Flags = 0; | |
844 | pSMB->Timeout = 0; | |
845 | pSMB->Reserved2 = 0; | |
846 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
847 | InformationLevel) - 4; | |
848 | offset = param_offset + params; | |
849 | ||
850 | /* Setup pointer to Request Data (inode type) */ | |
851 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
852 | pRqD->type = cpu_to_le16(type); | |
853 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
854 | pSMB->DataOffset = cpu_to_le16(offset); | |
855 | pSMB->SetupCount = 1; | |
856 | pSMB->Reserved3 = 0; | |
857 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
858 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
859 | ||
860 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
861 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
862 | pSMB->ParameterCount = cpu_to_le16(params); | |
863 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
864 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
865 | pSMB->Reserved4 = 0; | |
be8e3b00 | 866 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
867 | pSMB->ByteCount = cpu_to_le16(byte_count); |
868 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
869 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 870 | if (rc) |
b6b38f70 | 871 | cFYI(1, "Posix delete returned %d", rc); |
2d785a50 SF |
872 | cifs_buf_release(pSMB); |
873 | ||
874 | cifs_stats_inc(&tcon->num_deletes); | |
875 | ||
876 | if (rc == -EAGAIN) | |
877 | goto PsxDelete; | |
878 | ||
879 | return rc; | |
880 | } | |
881 | ||
1da177e4 | 882 | int |
96daf2b0 | 883 | CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName, |
737b758c | 884 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
885 | { |
886 | DELETE_FILE_REQ *pSMB = NULL; | |
887 | DELETE_FILE_RSP *pSMBr = NULL; | |
888 | int rc = 0; | |
889 | int bytes_returned; | |
890 | int name_len; | |
891 | ||
892 | DelFileRetry: | |
893 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
894 | (void **) &pSMBr); | |
895 | if (rc) | |
896 | return rc; | |
897 | ||
898 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
899 | name_len = | |
acbbb76a SF |
900 | cifsConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
901 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
902 | name_len++; /* trailing null */ |
903 | name_len *= 2; | |
09d1db5c | 904 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
905 | name_len = strnlen(fileName, PATH_MAX); |
906 | name_len++; /* trailing null */ | |
907 | strncpy(pSMB->fileName, fileName, name_len); | |
908 | } | |
909 | pSMB->SearchAttributes = | |
910 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
911 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 912 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
913 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
914 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
915 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 916 | cifs_stats_inc(&tcon->num_deletes); |
ad7a2926 | 917 | if (rc) |
b6b38f70 | 918 | cFYI(1, "Error in RMFile = %d", rc); |
1da177e4 LT |
919 | |
920 | cifs_buf_release(pSMB); | |
921 | if (rc == -EAGAIN) | |
922 | goto DelFileRetry; | |
923 | ||
924 | return rc; | |
925 | } | |
926 | ||
927 | int | |
96daf2b0 | 928 | CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName, |
737b758c | 929 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
930 | { |
931 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
932 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
933 | int rc = 0; | |
934 | int bytes_returned; | |
935 | int name_len; | |
936 | ||
b6b38f70 | 937 | cFYI(1, "In CIFSSMBRmDir"); |
1da177e4 LT |
938 | RmDirRetry: |
939 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
940 | (void **) &pSMBr); | |
941 | if (rc) | |
942 | return rc; | |
943 | ||
944 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
945 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, dirName, |
946 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
947 | name_len++; /* trailing null */ |
948 | name_len *= 2; | |
09d1db5c | 949 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
950 | name_len = strnlen(dirName, PATH_MAX); |
951 | name_len++; /* trailing null */ | |
952 | strncpy(pSMB->DirName, dirName, name_len); | |
953 | } | |
954 | ||
955 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 956 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
957 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
958 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
959 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 960 | cifs_stats_inc(&tcon->num_rmdirs); |
ad7a2926 | 961 | if (rc) |
b6b38f70 | 962 | cFYI(1, "Error in RMDir = %d", rc); |
1da177e4 LT |
963 | |
964 | cifs_buf_release(pSMB); | |
965 | if (rc == -EAGAIN) | |
966 | goto RmDirRetry; | |
967 | return rc; | |
968 | } | |
969 | ||
970 | int | |
96daf2b0 | 971 | CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon, |
737b758c | 972 | const char *name, const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
973 | { |
974 | int rc = 0; | |
975 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
976 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
977 | int bytes_returned; | |
978 | int name_len; | |
979 | ||
b6b38f70 | 980 | cFYI(1, "In CIFSSMBMkDir"); |
1da177e4 LT |
981 | MkDirRetry: |
982 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
983 | (void **) &pSMBr); | |
984 | if (rc) | |
985 | return rc; | |
986 | ||
987 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
988 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
989 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
990 | name_len++; /* trailing null */ |
991 | name_len *= 2; | |
09d1db5c | 992 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
993 | name_len = strnlen(name, PATH_MAX); |
994 | name_len++; /* trailing null */ | |
995 | strncpy(pSMB->DirName, name, name_len); | |
996 | } | |
997 | ||
998 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 999 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
1000 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
1001 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1002 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 1003 | cifs_stats_inc(&tcon->num_mkdirs); |
ad7a2926 | 1004 | if (rc) |
b6b38f70 | 1005 | cFYI(1, "Error in Mkdir = %d", rc); |
a5a2b489 | 1006 | |
1da177e4 LT |
1007 | cifs_buf_release(pSMB); |
1008 | if (rc == -EAGAIN) | |
1009 | goto MkDirRetry; | |
1010 | return rc; | |
1011 | } | |
1012 | ||
2dd29d31 | 1013 | int |
96daf2b0 | 1014 | CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags, |
ad7a2926 | 1015 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, |
50c2f753 | 1016 | __u32 *pOplock, const char *name, |
2dd29d31 SF |
1017 | const struct nls_table *nls_codepage, int remap) |
1018 | { | |
1019 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1020 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1021 | int name_len; | |
1022 | int rc = 0; | |
1023 | int bytes_returned = 0; | |
2dd29d31 | 1024 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
1025 | OPEN_PSX_REQ *pdata; |
1026 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 1027 | |
b6b38f70 | 1028 | cFYI(1, "In POSIX Create"); |
2dd29d31 SF |
1029 | PsxCreat: |
1030 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1031 | (void **) &pSMBr); | |
1032 | if (rc) | |
1033 | return rc; | |
1034 | ||
1035 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1036 | name_len = | |
acbbb76a SF |
1037 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
1038 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
1039 | name_len++; /* trailing null */ |
1040 | name_len *= 2; | |
1041 | } else { /* BB improve the check for buffer overruns BB */ | |
1042 | name_len = strnlen(name, PATH_MAX); | |
1043 | name_len++; /* trailing null */ | |
1044 | strncpy(pSMB->FileName, name, name_len); | |
1045 | } | |
1046 | ||
1047 | params = 6 + name_len; | |
1048 | count = sizeof(OPEN_PSX_REQ); | |
1049 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1050 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1051 | pSMB->MaxSetupCount = 0; | |
1052 | pSMB->Reserved = 0; | |
1053 | pSMB->Flags = 0; | |
1054 | pSMB->Timeout = 0; | |
1055 | pSMB->Reserved2 = 0; | |
1056 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 1057 | InformationLevel) - 4; |
2dd29d31 | 1058 | offset = param_offset + params; |
2dd29d31 | 1059 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376ad | 1060 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 1061 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 1062 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
1063 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
1064 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1065 | pSMB->DataOffset = cpu_to_le16(offset); | |
1066 | pSMB->SetupCount = 1; | |
1067 | pSMB->Reserved3 = 0; | |
1068 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1069 | byte_count = 3 /* pad */ + params + count; | |
1070 | ||
1071 | pSMB->DataCount = cpu_to_le16(count); | |
1072 | pSMB->ParameterCount = cpu_to_le16(params); | |
1073 | pSMB->TotalDataCount = pSMB->DataCount; | |
1074 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1075 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1076 | pSMB->Reserved4 = 0; | |
be8e3b00 | 1077 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
1078 | pSMB->ByteCount = cpu_to_le16(byte_count); |
1079 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1080 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1081 | if (rc) { | |
b6b38f70 | 1082 | cFYI(1, "Posix create returned %d", rc); |
2dd29d31 SF |
1083 | goto psx_create_err; |
1084 | } | |
1085 | ||
b6b38f70 | 1086 | cFYI(1, "copying inode info"); |
2dd29d31 SF |
1087 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1088 | ||
820a803f | 1089 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
1090 | rc = -EIO; /* bad smb */ |
1091 | goto psx_create_err; | |
1092 | } | |
1093 | ||
1094 | /* copy return information to pRetData */ | |
50c2f753 | 1095 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 1096 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 1097 | |
2dd29d31 | 1098 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 1099 | if (netfid) |
2dd29d31 SF |
1100 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
1101 | /* Let caller know file was created so we can set the mode. */ | |
1102 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1103 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
1104 | *pOplock |= CIFS_CREATE_ACTION; |
1105 | /* check to make sure response data is there */ | |
8f2376ad CG |
1106 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
1107 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
b6b38f70 | 1108 | cFYI(DBG2, "unknown type"); |
cbac3cba | 1109 | } else { |
820a803f | 1110 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 1111 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 1112 | cERROR(1, "Open response data too small"); |
8f2376ad | 1113 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
1114 | goto psx_create_err; |
1115 | } | |
50c2f753 | 1116 | memcpy((char *) pRetData, |
cbac3cba | 1117 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 1118 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 1119 | } |
2dd29d31 SF |
1120 | |
1121 | psx_create_err: | |
1122 | cifs_buf_release(pSMB); | |
1123 | ||
65bc98b0 SF |
1124 | if (posix_flags & SMB_O_DIRECTORY) |
1125 | cifs_stats_inc(&tcon->num_posixmkdirs); | |
1126 | else | |
1127 | cifs_stats_inc(&tcon->num_posixopens); | |
2dd29d31 SF |
1128 | |
1129 | if (rc == -EAGAIN) | |
1130 | goto PsxCreat; | |
1131 | ||
50c2f753 | 1132 | return rc; |
2dd29d31 SF |
1133 | } |
1134 | ||
a9d02ad4 SF |
1135 | static __u16 convert_disposition(int disposition) |
1136 | { | |
1137 | __u16 ofun = 0; | |
1138 | ||
1139 | switch (disposition) { | |
1140 | case FILE_SUPERSEDE: | |
1141 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1142 | break; | |
1143 | case FILE_OPEN: | |
1144 | ofun = SMBOPEN_OAPPEND; | |
1145 | break; | |
1146 | case FILE_CREATE: | |
1147 | ofun = SMBOPEN_OCREATE; | |
1148 | break; | |
1149 | case FILE_OPEN_IF: | |
1150 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1151 | break; | |
1152 | case FILE_OVERWRITE: | |
1153 | ofun = SMBOPEN_OTRUNC; | |
1154 | break; | |
1155 | case FILE_OVERWRITE_IF: | |
1156 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1157 | break; | |
1158 | default: | |
b6b38f70 | 1159 | cFYI(1, "unknown disposition %d", disposition); |
a9d02ad4 SF |
1160 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1161 | } | |
1162 | return ofun; | |
1163 | } | |
1164 | ||
35fc37d5 JL |
1165 | static int |
1166 | access_flags_to_smbopen_mode(const int access_flags) | |
1167 | { | |
1168 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1169 | ||
1170 | if (masked_flags == GENERIC_READ) | |
1171 | return SMBOPEN_READ; | |
1172 | else if (masked_flags == GENERIC_WRITE) | |
1173 | return SMBOPEN_WRITE; | |
1174 | ||
1175 | /* just go for read/write */ | |
1176 | return SMBOPEN_READWRITE; | |
1177 | } | |
1178 | ||
a9d02ad4 | 1179 | int |
96daf2b0 | 1180 | SMBLegacyOpen(const int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1181 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1182 | const int access_flags, const int create_options, __u16 *netfid, |
1183 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1184 | const struct nls_table *nls_codepage, int remap) |
1185 | { | |
1186 | int rc = -EACCES; | |
1187 | OPENX_REQ *pSMB = NULL; | |
1188 | OPENX_RSP *pSMBr = NULL; | |
1189 | int bytes_returned; | |
1190 | int name_len; | |
1191 | __u16 count; | |
1192 | ||
1193 | OldOpenRetry: | |
1194 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1195 | (void **) &pSMBr); | |
1196 | if (rc) | |
1197 | return rc; | |
1198 | ||
1199 | pSMB->AndXCommand = 0xFF; /* none */ | |
1200 | ||
1201 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1202 | count = 1; /* account for one byte pad to word boundary */ | |
1203 | name_len = | |
acbbb76a SF |
1204 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1205 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1206 | name_len++; /* trailing null */ |
1207 | name_len *= 2; | |
1208 | } else { /* BB improve check for buffer overruns BB */ | |
1209 | count = 0; /* no pad */ | |
1210 | name_len = strnlen(fileName, PATH_MAX); | |
1211 | name_len++; /* trailing null */ | |
1212 | strncpy(pSMB->fileName, fileName, name_len); | |
1213 | } | |
1214 | if (*pOplock & REQ_OPLOCK) | |
1215 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1216 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1217 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1218 | |
a9d02ad4 | 1219 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1220 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1221 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1222 | /* set file as system file if special file such | |
1223 | as fifo and server expecting SFU style and | |
1224 | no Unix extensions */ | |
1225 | ||
790fe579 SF |
1226 | if (create_options & CREATE_OPTION_SPECIAL) |
1227 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1228 | else /* BB FIXME BB */ |
1229 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1230 | |
67750fb9 JL |
1231 | if (create_options & CREATE_OPTION_READONLY) |
1232 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1233 | |
1234 | /* BB FIXME BB */ | |
50c2f753 SF |
1235 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1236 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1237 | /* BB FIXME END BB */ |
3e87d803 SF |
1238 | |
1239 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1240 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1241 | count += name_len; |
be8e3b00 | 1242 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1243 | |
1244 | pSMB->ByteCount = cpu_to_le16(count); | |
1245 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1246 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1247 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a9d02ad4 SF |
1248 | cifs_stats_inc(&tcon->num_opens); |
1249 | if (rc) { | |
b6b38f70 | 1250 | cFYI(1, "Error in Open = %d", rc); |
a9d02ad4 SF |
1251 | } else { |
1252 | /* BB verify if wct == 15 */ | |
1253 | ||
582d21e5 | 1254 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1255 | |
1256 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1257 | /* Let caller know file was created so we can set the mode. */ | |
1258 | /* Do we care about the CreateAction in any other cases? */ | |
1259 | /* BB FIXME BB */ | |
790fe579 | 1260 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1261 | *pOplock |= CIFS_CREATE_ACTION; */ |
1262 | /* BB FIXME END */ | |
1263 | ||
790fe579 | 1264 | if (pfile_info) { |
a9d02ad4 SF |
1265 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1266 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1267 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1268 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1269 | pfile_info->Attributes = |
50c2f753 | 1270 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1271 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1272 | pfile_info->AllocationSize = |
1273 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1274 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1275 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1276 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1277 | } |
1278 | } | |
1279 | ||
1280 | cifs_buf_release(pSMB); | |
1281 | if (rc == -EAGAIN) | |
1282 | goto OldOpenRetry; | |
1283 | return rc; | |
1284 | } | |
1285 | ||
1da177e4 | 1286 | int |
96daf2b0 | 1287 | CIFSSMBOpen(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 1288 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1289 | const int access_flags, const int create_options, __u16 *netfid, |
1290 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
737b758c | 1291 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
1292 | { |
1293 | int rc = -EACCES; | |
1294 | OPEN_REQ *pSMB = NULL; | |
1295 | OPEN_RSP *pSMBr = NULL; | |
1296 | int bytes_returned; | |
1297 | int name_len; | |
1298 | __u16 count; | |
1299 | ||
1300 | openRetry: | |
1301 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1302 | (void **) &pSMBr); | |
1303 | if (rc) | |
1304 | return rc; | |
1305 | ||
1306 | pSMB->AndXCommand = 0xFF; /* none */ | |
1307 | ||
1308 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1309 | count = 1; /* account for one byte pad to word boundary */ | |
1310 | name_len = | |
acbbb76a SF |
1311 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1312 | fileName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
1313 | name_len++; /* trailing null */ |
1314 | name_len *= 2; | |
1315 | pSMB->NameLength = cpu_to_le16(name_len); | |
09d1db5c | 1316 | } else { /* BB improve check for buffer overruns BB */ |
1da177e4 LT |
1317 | count = 0; /* no pad */ |
1318 | name_len = strnlen(fileName, PATH_MAX); | |
1319 | name_len++; /* trailing null */ | |
1320 | pSMB->NameLength = cpu_to_le16(name_len); | |
1321 | strncpy(pSMB->fileName, fileName, name_len); | |
1322 | } | |
1323 | if (*pOplock & REQ_OPLOCK) | |
1324 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
26f57364 | 1325 | else if (*pOplock & REQ_BATCHOPLOCK) |
1da177e4 | 1326 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
1da177e4 LT |
1327 | pSMB->DesiredAccess = cpu_to_le32(access_flags); |
1328 | pSMB->AllocationSize = 0; | |
eda3c029 SF |
1329 | /* set file as system file if special file such |
1330 | as fifo and server expecting SFU style and | |
1331 | no Unix extensions */ | |
790fe579 | 1332 | if (create_options & CREATE_OPTION_SPECIAL) |
eda3c029 SF |
1333 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
1334 | else | |
1335 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
67750fb9 | 1336 | |
1da177e4 LT |
1337 | /* XP does not handle ATTR_POSIX_SEMANTICS */ |
1338 | /* but it helps speed up case sensitive checks for other | |
1339 | servers such as Samba */ | |
1340 | if (tcon->ses->capabilities & CAP_UNIX) | |
1341 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1342 | ||
67750fb9 JL |
1343 | if (create_options & CREATE_OPTION_READONLY) |
1344 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1345 | ||
1da177e4 LT |
1346 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
1347 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
eda3c029 | 1348 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
09d1db5c SF |
1349 | /* BB Expirement with various impersonation levels and verify */ |
1350 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1da177e4 LT |
1351 | pSMB->SecurityFlags = |
1352 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1353 | ||
1354 | count += name_len; | |
be8e3b00 | 1355 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1356 | |
1357 | pSMB->ByteCount = cpu_to_le16(count); | |
1358 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1359 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
7749981e | 1360 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
a4544347 | 1361 | cifs_stats_inc(&tcon->num_opens); |
1da177e4 | 1362 | if (rc) { |
b6b38f70 | 1363 | cFYI(1, "Error in Open = %d", rc); |
1da177e4 | 1364 | } else { |
09d1db5c | 1365 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ |
1da177e4 LT |
1366 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ |
1367 | /* Let caller know file was created so we can set the mode. */ | |
1368 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 1369 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
50c2f753 | 1370 | *pOplock |= CIFS_CREATE_ACTION; |
790fe579 | 1371 | if (pfile_info) { |
61e74801 SF |
1372 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, |
1373 | 36 /* CreationTime to Attributes */); | |
1374 | /* the file_info buf is endian converted by caller */ | |
1375 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1376 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1377 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1378 | pfile_info->DeletePending = 0; | |
1da177e4 | 1379 | } |
1da177e4 | 1380 | } |
a5a2b489 | 1381 | |
1da177e4 LT |
1382 | cifs_buf_release(pSMB); |
1383 | if (rc == -EAGAIN) | |
1384 | goto openRetry; | |
1385 | return rc; | |
1386 | } | |
1387 | ||
e28bc5b1 JL |
1388 | struct cifs_readdata * |
1389 | cifs_readdata_alloc(unsigned int nr_pages) | |
1390 | { | |
1391 | struct cifs_readdata *rdata; | |
1392 | ||
1393 | /* readdata + 1 kvec for each page */ | |
1394 | rdata = kzalloc(sizeof(*rdata) + | |
1395 | sizeof(struct kvec) * nr_pages, GFP_KERNEL); | |
1396 | if (rdata != NULL) { | |
1397 | INIT_WORK(&rdata->work, cifs_readv_complete); | |
1398 | INIT_LIST_HEAD(&rdata->pages); | |
1399 | } | |
1400 | return rdata; | |
1401 | } | |
1402 | ||
1403 | void | |
1404 | cifs_readdata_free(struct cifs_readdata *rdata) | |
1405 | { | |
1406 | cifsFileInfo_put(rdata->cfile); | |
1407 | kfree(rdata); | |
1408 | } | |
1409 | ||
1410 | /* | |
1411 | * Discard any remaining data in the current SMB. To do this, we borrow the | |
1412 | * current bigbuf. | |
1413 | */ | |
1414 | static int | |
1415 | cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1416 | { | |
5ffef7bf | 1417 | unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1 JL |
1418 | int remaining = rfclen + 4 - server->total_read; |
1419 | struct cifs_readdata *rdata = mid->callback_data; | |
1420 | ||
1421 | while (remaining > 0) { | |
1422 | int length; | |
1423 | ||
1424 | length = cifs_read_from_socket(server, server->bigbuf, | |
1425 | min_t(unsigned int, remaining, | |
5ffef7bf | 1426 | CIFSMaxBufSize + max_header_size())); |
e28bc5b1 JL |
1427 | if (length < 0) |
1428 | return length; | |
1429 | server->total_read += length; | |
1430 | remaining -= length; | |
1431 | } | |
1432 | ||
1433 | dequeue_mid(mid, rdata->result); | |
1434 | return 0; | |
1435 | } | |
1436 | ||
5ffef7bf PS |
1437 | static inline size_t |
1438 | read_rsp_size(void) | |
1439 | { | |
1440 | return sizeof(READ_RSP); | |
1441 | } | |
1442 | ||
1443 | static inline unsigned int | |
1444 | read_data_offset(char *buf) | |
1445 | { | |
1446 | READ_RSP *rsp = (READ_RSP *)buf; | |
1447 | return le16_to_cpu(rsp->DataOffset); | |
1448 | } | |
1449 | ||
1450 | static inline unsigned int | |
1451 | read_data_length(char *buf) | |
1452 | { | |
1453 | READ_RSP *rsp = (READ_RSP *)buf; | |
1454 | return (le16_to_cpu(rsp->DataLengthHigh) << 16) + | |
1455 | le16_to_cpu(rsp->DataLength); | |
1456 | } | |
1457 | ||
e28bc5b1 JL |
1458 | static int |
1459 | cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
1460 | { | |
1461 | int length, len; | |
1462 | unsigned int data_offset, remaining, data_len; | |
1463 | struct cifs_readdata *rdata = mid->callback_data; | |
5ffef7bf PS |
1464 | char *buf = server->smallbuf; |
1465 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
e28bc5b1 JL |
1466 | u64 eof; |
1467 | pgoff_t eof_index; | |
1468 | struct page *page, *tpage; | |
1469 | ||
7c9421e1 | 1470 | cFYI(1, "%s: mid=%llu offset=%llu bytes=%u", __func__, |
e28bc5b1 JL |
1471 | mid->mid, rdata->offset, rdata->bytes); |
1472 | ||
1473 | /* | |
1474 | * read the rest of READ_RSP header (sans Data array), or whatever we | |
1475 | * can if there's not enough data. At this point, we've read down to | |
1476 | * the Mid. | |
1477 | */ | |
5ffef7bf | 1478 | len = min_t(unsigned int, buflen, read_rsp_size()) - header_size() + 1; |
e28bc5b1 | 1479 | |
5ffef7bf | 1480 | rdata->iov[0].iov_base = buf + header_size() - 1; |
e28bc5b1 JL |
1481 | rdata->iov[0].iov_len = len; |
1482 | ||
1483 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1484 | if (length < 0) | |
1485 | return length; | |
1486 | server->total_read += length; | |
1487 | ||
1488 | /* Was the SMB read successful? */ | |
5ffef7bf | 1489 | rdata->result = map_smb_to_linux_error(buf, false); |
e28bc5b1 JL |
1490 | if (rdata->result != 0) { |
1491 | cFYI(1, "%s: server returned error %d", __func__, | |
1492 | rdata->result); | |
1493 | return cifs_readv_discard(server, mid); | |
1494 | } | |
1495 | ||
1496 | /* Is there enough to get to the rest of the READ_RSP header? */ | |
5ffef7bf | 1497 | if (server->total_read < read_rsp_size()) { |
e28bc5b1 | 1498 | cFYI(1, "%s: server returned short header. got=%u expected=%zu", |
5ffef7bf | 1499 | __func__, server->total_read, read_rsp_size()); |
e28bc5b1 JL |
1500 | rdata->result = -EIO; |
1501 | return cifs_readv_discard(server, mid); | |
1502 | } | |
1503 | ||
5ffef7bf | 1504 | data_offset = read_data_offset(buf) + 4; |
e28bc5b1 JL |
1505 | if (data_offset < server->total_read) { |
1506 | /* | |
1507 | * win2k8 sometimes sends an offset of 0 when the read | |
1508 | * is beyond the EOF. Treat it as if the data starts just after | |
1509 | * the header. | |
1510 | */ | |
1511 | cFYI(1, "%s: data offset (%u) inside read response header", | |
1512 | __func__, data_offset); | |
1513 | data_offset = server->total_read; | |
1514 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1515 | /* data_offset is beyond the end of smallbuf */ | |
1516 | cFYI(1, "%s: data offset (%u) beyond end of smallbuf", | |
1517 | __func__, data_offset); | |
1518 | rdata->result = -EIO; | |
1519 | return cifs_readv_discard(server, mid); | |
1520 | } | |
1521 | ||
1522 | cFYI(1, "%s: total_read=%u data_offset=%u", __func__, | |
1523 | server->total_read, data_offset); | |
1524 | ||
1525 | len = data_offset - server->total_read; | |
1526 | if (len > 0) { | |
1527 | /* read any junk before data into the rest of smallbuf */ | |
5ffef7bf | 1528 | rdata->iov[0].iov_base = buf + server->total_read; |
e28bc5b1 JL |
1529 | rdata->iov[0].iov_len = len; |
1530 | length = cifs_readv_from_socket(server, rdata->iov, 1, len); | |
1531 | if (length < 0) | |
1532 | return length; | |
1533 | server->total_read += length; | |
1534 | } | |
1535 | ||
1536 | /* set up first iov for signature check */ | |
5ffef7bf | 1537 | rdata->iov[0].iov_base = buf; |
e28bc5b1 JL |
1538 | rdata->iov[0].iov_len = server->total_read; |
1539 | cFYI(1, "0: iov_base=%p iov_len=%zu", | |
1540 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
1541 | ||
1542 | /* how much data is in the response? */ | |
5ffef7bf PS |
1543 | data_len = read_data_length(buf); |
1544 | if (data_offset + data_len > buflen) { | |
e28bc5b1 JL |
1545 | /* data_len is corrupt -- discard frame */ |
1546 | rdata->result = -EIO; | |
1547 | return cifs_readv_discard(server, mid); | |
1548 | } | |
1549 | ||
1550 | /* marshal up the page array */ | |
1551 | len = 0; | |
1552 | remaining = data_len; | |
1553 | rdata->nr_iov = 1; | |
1554 | ||
1555 | /* determine the eof that the server (probably) has */ | |
1556 | eof = CIFS_I(rdata->mapping->host)->server_eof; | |
1557 | eof_index = eof ? (eof - 1) >> PAGE_CACHE_SHIFT : 0; | |
1558 | cFYI(1, "eof=%llu eof_index=%lu", eof, eof_index); | |
1559 | ||
1560 | list_for_each_entry_safe(page, tpage, &rdata->pages, lru) { | |
1561 | if (remaining >= PAGE_CACHE_SIZE) { | |
1562 | /* enough data to fill the page */ | |
1563 | rdata->iov[rdata->nr_iov].iov_base = kmap(page); | |
1564 | rdata->iov[rdata->nr_iov].iov_len = PAGE_CACHE_SIZE; | |
1565 | cFYI(1, "%u: idx=%lu iov_base=%p iov_len=%zu", | |
1566 | rdata->nr_iov, page->index, | |
1567 | rdata->iov[rdata->nr_iov].iov_base, | |
1568 | rdata->iov[rdata->nr_iov].iov_len); | |
1569 | ++rdata->nr_iov; | |
1570 | len += PAGE_CACHE_SIZE; | |
1571 | remaining -= PAGE_CACHE_SIZE; | |
1572 | } else if (remaining > 0) { | |
1573 | /* enough for partial page, fill and zero the rest */ | |
1574 | rdata->iov[rdata->nr_iov].iov_base = kmap(page); | |
1575 | rdata->iov[rdata->nr_iov].iov_len = remaining; | |
1576 | cFYI(1, "%u: idx=%lu iov_base=%p iov_len=%zu", | |
1577 | rdata->nr_iov, page->index, | |
1578 | rdata->iov[rdata->nr_iov].iov_base, | |
1579 | rdata->iov[rdata->nr_iov].iov_len); | |
1580 | memset(rdata->iov[rdata->nr_iov].iov_base + remaining, | |
1581 | '\0', PAGE_CACHE_SIZE - remaining); | |
1582 | ++rdata->nr_iov; | |
1583 | len += remaining; | |
1584 | remaining = 0; | |
1585 | } else if (page->index > eof_index) { | |
1586 | /* | |
1587 | * The VFS will not try to do readahead past the | |
1588 | * i_size, but it's possible that we have outstanding | |
1589 | * writes with gaps in the middle and the i_size hasn't | |
1590 | * caught up yet. Populate those with zeroed out pages | |
1591 | * to prevent the VFS from repeatedly attempting to | |
1592 | * fill them until the writes are flushed. | |
1593 | */ | |
1594 | zero_user(page, 0, PAGE_CACHE_SIZE); | |
1595 | list_del(&page->lru); | |
1596 | lru_cache_add_file(page); | |
1597 | flush_dcache_page(page); | |
1598 | SetPageUptodate(page); | |
1599 | unlock_page(page); | |
1600 | page_cache_release(page); | |
1601 | } else { | |
1602 | /* no need to hold page hostage */ | |
1603 | list_del(&page->lru); | |
1604 | lru_cache_add_file(page); | |
1605 | unlock_page(page); | |
1606 | page_cache_release(page); | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | /* issue the read if we have any iovecs left to fill */ | |
1611 | if (rdata->nr_iov > 1) { | |
1612 | length = cifs_readv_from_socket(server, &rdata->iov[1], | |
1613 | rdata->nr_iov - 1, len); | |
1614 | if (length < 0) | |
1615 | return length; | |
1616 | server->total_read += length; | |
1617 | } else { | |
1618 | length = 0; | |
1619 | } | |
1620 | ||
1621 | rdata->bytes = length; | |
1622 | ||
5ffef7bf PS |
1623 | cFYI(1, "total_read=%u buflen=%u remaining=%u", server->total_read, |
1624 | buflen, remaining); | |
e28bc5b1 JL |
1625 | |
1626 | /* discard anything left over */ | |
5ffef7bf | 1627 | if (server->total_read < buflen) |
e28bc5b1 JL |
1628 | return cifs_readv_discard(server, mid); |
1629 | ||
1630 | dequeue_mid(mid, false); | |
1631 | return length; | |
1632 | } | |
1633 | ||
1634 | static void | |
1635 | cifs_readv_complete(struct work_struct *work) | |
1636 | { | |
1637 | struct cifs_readdata *rdata = container_of(work, | |
1638 | struct cifs_readdata, work); | |
1639 | struct page *page, *tpage; | |
1640 | ||
1641 | list_for_each_entry_safe(page, tpage, &rdata->pages, lru) { | |
1642 | list_del(&page->lru); | |
1643 | lru_cache_add_file(page); | |
e28bc5b1 JL |
1644 | |
1645 | if (rdata->result == 0) { | |
a2d6b6ca | 1646 | kunmap(page); |
e28bc5b1 JL |
1647 | flush_dcache_page(page); |
1648 | SetPageUptodate(page); | |
1649 | } | |
1650 | ||
1651 | unlock_page(page); | |
1652 | ||
1653 | if (rdata->result == 0) | |
1654 | cifs_readpage_to_fscache(rdata->mapping->host, page); | |
1655 | ||
1656 | page_cache_release(page); | |
1657 | } | |
1658 | cifs_readdata_free(rdata); | |
1659 | } | |
1660 | ||
1661 | static void | |
1662 | cifs_readv_callback(struct mid_q_entry *mid) | |
1663 | { | |
1664 | struct cifs_readdata *rdata = mid->callback_data; | |
1665 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1666 | struct TCP_Server_Info *server = tcon->ses->server; | |
1667 | ||
7c9421e1 PS |
1668 | cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__, |
1669 | mid->mid, mid->mid_state, rdata->result, rdata->bytes); | |
e28bc5b1 | 1670 | |
7c9421e1 | 1671 | switch (mid->mid_state) { |
e28bc5b1 JL |
1672 | case MID_RESPONSE_RECEIVED: |
1673 | /* result already set, check signature */ | |
1674 | if (server->sec_mode & | |
1675 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { | |
1676 | if (cifs_verify_signature(rdata->iov, rdata->nr_iov, | |
1677 | server, mid->sequence_number + 1)) | |
1678 | cERROR(1, "Unexpected SMB signature"); | |
1679 | } | |
1680 | /* FIXME: should this be counted toward the initiating task? */ | |
1681 | task_io_account_read(rdata->bytes); | |
1682 | cifs_stats_bytes_read(tcon, rdata->bytes); | |
1683 | break; | |
1684 | case MID_REQUEST_SUBMITTED: | |
1685 | case MID_RETRY_NEEDED: | |
1686 | rdata->result = -EAGAIN; | |
1687 | break; | |
1688 | default: | |
1689 | rdata->result = -EIO; | |
1690 | } | |
1691 | ||
da472fc8 | 1692 | queue_work(cifsiod_wq, &rdata->work); |
e28bc5b1 | 1693 | DeleteMidQEntry(mid); |
2d86dbc9 | 1694 | cifs_add_credits(server, 1); |
e28bc5b1 JL |
1695 | } |
1696 | ||
1697 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1698 | int | |
1699 | cifs_async_readv(struct cifs_readdata *rdata) | |
1700 | { | |
1701 | int rc; | |
1702 | READ_REQ *smb = NULL; | |
1703 | int wct; | |
1704 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1705 | ||
1706 | cFYI(1, "%s: offset=%llu bytes=%u", __func__, | |
1707 | rdata->offset, rdata->bytes); | |
1708 | ||
1709 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1710 | wct = 12; | |
1711 | else { | |
1712 | wct = 10; /* old style read */ | |
1713 | if ((rdata->offset >> 32) > 0) { | |
1714 | /* can not handle this big offset for old */ | |
1715 | return -EIO; | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1720 | if (rc) | |
1721 | return rc; | |
1722 | ||
1723 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1724 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1725 | ||
1726 | smb->AndXCommand = 0xFF; /* none */ | |
1727 | smb->Fid = rdata->cfile->netfid; | |
1728 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); | |
1729 | if (wct == 12) | |
1730 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1731 | smb->Remaining = 0; | |
1732 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1733 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1734 | if (wct == 12) | |
1735 | smb->ByteCount = 0; | |
1736 | else { | |
1737 | /* old style read */ | |
1738 | struct smb_com_readx_req *smbr = | |
1739 | (struct smb_com_readx_req *)smb; | |
1740 | smbr->ByteCount = 0; | |
1741 | } | |
1742 | ||
1743 | /* 4 for RFC1001 length + 1 for BCC */ | |
1744 | rdata->iov[0].iov_base = smb; | |
1745 | rdata->iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; | |
1746 | ||
1747 | rc = cifs_call_async(tcon->ses->server, rdata->iov, 1, | |
1748 | cifs_readv_receive, cifs_readv_callback, | |
1749 | rdata, false); | |
1750 | ||
1751 | if (rc == 0) | |
1752 | cifs_stats_inc(&tcon->num_reads); | |
1753 | ||
1754 | cifs_small_buf_release(smb); | |
1755 | return rc; | |
1756 | } | |
1757 | ||
1da177e4 | 1758 | int |
d4ffff1f | 1759 | CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, |
50c2f753 | 1760 | char **buf, int *pbuf_type) |
1da177e4 LT |
1761 | { |
1762 | int rc = -EACCES; | |
1763 | READ_REQ *pSMB = NULL; | |
1764 | READ_RSP *pSMBr = NULL; | |
1765 | char *pReadData = NULL; | |
bfa0d75a | 1766 | int wct; |
ec637e3f SF |
1767 | int resp_buf_type = 0; |
1768 | struct kvec iov[1]; | |
d4ffff1f PS |
1769 | __u32 pid = io_parms->pid; |
1770 | __u16 netfid = io_parms->netfid; | |
1771 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1772 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1773 | unsigned int count = io_parms->length; |
1da177e4 | 1774 | |
b6b38f70 | 1775 | cFYI(1, "Reading %d bytes on fid %d", count, netfid); |
790fe579 | 1776 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1777 | wct = 12; |
4c3130ef | 1778 | else { |
bfa0d75a | 1779 | wct = 10; /* old style read */ |
d4ffff1f | 1780 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1781 | /* can not handle this big offset for old */ |
1782 | return -EIO; | |
1783 | } | |
1784 | } | |
1da177e4 LT |
1785 | |
1786 | *nbytes = 0; | |
ec637e3f | 1787 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1788 | if (rc) |
1789 | return rc; | |
1790 | ||
d4ffff1f PS |
1791 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1792 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1793 | ||
1da177e4 LT |
1794 | /* tcon and ses pointer are checked in smb_init */ |
1795 | if (tcon->ses->server == NULL) | |
1796 | return -ECONNABORTED; | |
1797 | ||
ec637e3f | 1798 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1799 | pSMB->Fid = netfid; |
d4ffff1f | 1800 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1801 | if (wct == 12) |
d4ffff1f | 1802 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1803 | |
1da177e4 LT |
1804 | pSMB->Remaining = 0; |
1805 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1806 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1807 | if (wct == 12) |
bfa0d75a SF |
1808 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1809 | else { | |
1810 | /* old style read */ | |
50c2f753 | 1811 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1812 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1813 | pSMBW->ByteCount = 0; |
bfa0d75a | 1814 | } |
ec637e3f SF |
1815 | |
1816 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1817 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac57 | 1818 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981e | 1819 | &resp_buf_type, CIFS_LOG_ERROR); |
a4544347 | 1820 | cifs_stats_inc(&tcon->num_reads); |
ec637e3f | 1821 | pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4 | 1822 | if (rc) { |
b6b38f70 | 1823 | cERROR(1, "Send error in read = %d", rc); |
1da177e4 LT |
1824 | } else { |
1825 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1826 | data_length = data_length << 16; | |
1827 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1828 | *nbytes = data_length; | |
1829 | ||
1830 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1831 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1832 | || (data_length > count)) { |
b6b38f70 JP |
1833 | cFYI(1, "bad length %d for count %d", |
1834 | data_length, count); | |
1da177e4 LT |
1835 | rc = -EIO; |
1836 | *nbytes = 0; | |
1837 | } else { | |
ec637e3f | 1838 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1839 | le16_to_cpu(pSMBr->DataOffset); |
1840 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
b6b38f70 | 1841 | cERROR(1, "Faulting on read rc = %d",rc); |
50c2f753 | 1842 | rc = -EFAULT; |
26f57364 | 1843 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1844 | if (*buf) |
50c2f753 | 1845 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1846 | } |
1847 | } | |
1da177e4 | 1848 | |
4b8f930f | 1849 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 SF |
1850 | if (*buf) { |
1851 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
ec637e3f | 1852 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 1853 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1854 | cifs_buf_release(iov[0].iov_base); |
790fe579 | 1855 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 SF |
1856 | /* return buffer to caller to free */ |
1857 | *buf = iov[0].iov_base; | |
790fe579 | 1858 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1859 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1860 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1861 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1862 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1863 | |
1864 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1865 | since file handle passed in no longer valid */ |
1866 | return rc; | |
1867 | } | |
1868 | ||
ec637e3f | 1869 | |
1da177e4 | 1870 | int |
fa2989f4 PS |
1871 | CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms, |
1872 | unsigned int *nbytes, const char *buf, | |
50c2f753 | 1873 | const char __user *ubuf, const int long_op) |
1da177e4 LT |
1874 | { |
1875 | int rc = -EACCES; | |
1876 | WRITE_REQ *pSMB = NULL; | |
1877 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1878 | int bytes_returned, wct; |
1da177e4 LT |
1879 | __u32 bytes_sent; |
1880 | __u16 byte_count; | |
fa2989f4 PS |
1881 | __u32 pid = io_parms->pid; |
1882 | __u16 netfid = io_parms->netfid; | |
1883 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1884 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1885 | unsigned int count = io_parms->length; |
1da177e4 | 1886 | |
a24e2d7d SF |
1887 | *nbytes = 0; |
1888 | ||
b6b38f70 | 1889 | /* cFYI(1, "write at %lld %d bytes", offset, count);*/ |
790fe579 | 1890 | if (tcon->ses == NULL) |
1c955187 SF |
1891 | return -ECONNABORTED; |
1892 | ||
790fe579 | 1893 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1894 | wct = 14; |
4c3130ef | 1895 | else { |
1c955187 | 1896 | wct = 12; |
4c3130ef SF |
1897 | if ((offset >> 32) > 0) { |
1898 | /* can not handle big offset for old srv */ | |
1899 | return -EIO; | |
1900 | } | |
1901 | } | |
1c955187 SF |
1902 | |
1903 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1904 | (void **) &pSMBr); |
1905 | if (rc) | |
1906 | return rc; | |
fa2989f4 PS |
1907 | |
1908 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1909 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1910 | ||
1da177e4 LT |
1911 | /* tcon and ses pointer are checked in smb_init */ |
1912 | if (tcon->ses->server == NULL) | |
1913 | return -ECONNABORTED; | |
1914 | ||
1915 | pSMB->AndXCommand = 0xFF; /* none */ | |
1916 | pSMB->Fid = netfid; | |
1917 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1918 | if (wct == 14) |
1c955187 | 1919 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1920 | |
1da177e4 LT |
1921 | pSMB->Reserved = 0xFFFFFFFF; |
1922 | pSMB->WriteMode = 0; | |
1923 | pSMB->Remaining = 0; | |
1924 | ||
50c2f753 | 1925 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1926 | can send more if LARGE_WRITE_X capability returned by the server and if |
1927 | our buffer is big enough or if we convert to iovecs on socket writes | |
1928 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1929 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1930 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1931 | } else { | |
1932 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1933 | & ~0xFF; | |
1934 | } | |
1935 | ||
1936 | if (bytes_sent > count) | |
1937 | bytes_sent = count; | |
1938 | pSMB->DataOffset = | |
50c2f753 | 1939 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1940 | if (buf) |
61e74801 | 1941 | memcpy(pSMB->Data, buf, bytes_sent); |
790fe579 SF |
1942 | else if (ubuf) { |
1943 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1da177e4 LT |
1944 | cifs_buf_release(pSMB); |
1945 | return -EFAULT; | |
1946 | } | |
e30dcf3a | 1947 | } else if (count != 0) { |
1da177e4 LT |
1948 | /* No buffer */ |
1949 | cifs_buf_release(pSMB); | |
1950 | return -EINVAL; | |
e30dcf3a | 1951 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1952 | if (wct == 14) |
e30dcf3a | 1953 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1954 | else /* wct == 12 */ |
e30dcf3a | 1955 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1956 | |
1da177e4 LT |
1957 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1958 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1959 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1960 | |
790fe579 | 1961 | if (wct == 14) |
1c955187 | 1962 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1963 | else { /* old style write has byte count 4 bytes earlier |
1964 | so 4 bytes pad */ | |
1965 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1966 | (struct smb_com_writex_req *)pSMB; |
1967 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1968 | } | |
1da177e4 LT |
1969 | |
1970 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1971 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
a4544347 | 1972 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 1973 | if (rc) { |
f19159dc | 1974 | cFYI(1, "Send error in write = %d", rc); |
1da177e4 LT |
1975 | } else { |
1976 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1977 | *nbytes = (*nbytes) << 16; | |
1978 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1979 | |
1980 | /* | |
1981 | * Mask off high 16 bits when bytes written as returned by the | |
1982 | * server is greater than bytes requested by the client. Some | |
1983 | * OS/2 servers are known to set incorrect CountHigh values. | |
1984 | */ | |
1985 | if (*nbytes > count) | |
1986 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1987 | } |
1988 | ||
1989 | cifs_buf_release(pSMB); | |
1990 | ||
50c2f753 | 1991 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1992 | since file handle passed in no longer valid */ |
1993 | ||
1994 | return rc; | |
1995 | } | |
1996 | ||
c28c89fc JL |
1997 | void |
1998 | cifs_writedata_release(struct kref *refcount) | |
1999 | { | |
2000 | struct cifs_writedata *wdata = container_of(refcount, | |
2001 | struct cifs_writedata, refcount); | |
2002 | ||
2003 | if (wdata->cfile) | |
2004 | cifsFileInfo_put(wdata->cfile); | |
2005 | ||
2006 | kfree(wdata); | |
2007 | } | |
2008 | ||
2009 | /* | |
2010 | * Write failed with a retryable error. Resend the write request. It's also | |
2011 | * possible that the page was redirtied so re-clean the page. | |
2012 | */ | |
2013 | static void | |
2014 | cifs_writev_requeue(struct cifs_writedata *wdata) | |
2015 | { | |
2016 | int i, rc; | |
2017 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
2018 | ||
2019 | for (i = 0; i < wdata->nr_pages; i++) { | |
2020 | lock_page(wdata->pages[i]); | |
2021 | clear_page_dirty_for_io(wdata->pages[i]); | |
2022 | } | |
2023 | ||
2024 | do { | |
2025 | rc = cifs_async_writev(wdata); | |
2026 | } while (rc == -EAGAIN); | |
2027 | ||
2028 | for (i = 0; i < wdata->nr_pages; i++) { | |
2029 | if (rc != 0) | |
2030 | SetPageError(wdata->pages[i]); | |
2031 | unlock_page(wdata->pages[i]); | |
2032 | } | |
2033 | ||
2034 | mapping_set_error(inode->i_mapping, rc); | |
2035 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2036 | } | |
2037 | ||
c2e87640 | 2038 | void |
c28c89fc JL |
2039 | cifs_writev_complete(struct work_struct *work) |
2040 | { | |
2041 | struct cifs_writedata *wdata = container_of(work, | |
2042 | struct cifs_writedata, work); | |
2043 | struct inode *inode = wdata->cfile->dentry->d_inode; | |
2044 | int i = 0; | |
2045 | ||
2046 | if (wdata->result == 0) { | |
597b027f | 2047 | spin_lock(&inode->i_lock); |
c28c89fc | 2048 | cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f | 2049 | spin_unlock(&inode->i_lock); |
c28c89fc JL |
2050 | cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
2051 | wdata->bytes); | |
2052 | } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) | |
2053 | return cifs_writev_requeue(wdata); | |
2054 | ||
2055 | for (i = 0; i < wdata->nr_pages; i++) { | |
2056 | struct page *page = wdata->pages[i]; | |
2057 | if (wdata->result == -EAGAIN) | |
2058 | __set_page_dirty_nobuffers(page); | |
2059 | else if (wdata->result < 0) | |
2060 | SetPageError(page); | |
2061 | end_page_writeback(page); | |
2062 | page_cache_release(page); | |
2063 | } | |
2064 | if (wdata->result != -EAGAIN) | |
2065 | mapping_set_error(inode->i_mapping, wdata->result); | |
2066 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2067 | } | |
2068 | ||
2069 | struct cifs_writedata * | |
c2e87640 | 2070 | cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc JL |
2071 | { |
2072 | struct cifs_writedata *wdata; | |
2073 | ||
2074 | /* this would overflow */ | |
2075 | if (nr_pages == 0) { | |
2076 | cERROR(1, "%s: called with nr_pages == 0!", __func__); | |
2077 | return NULL; | |
2078 | } | |
2079 | ||
2080 | /* writedata + number of page pointers */ | |
2081 | wdata = kzalloc(sizeof(*wdata) + | |
2082 | sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); | |
2083 | if (wdata != NULL) { | |
c28c89fc | 2084 | kref_init(&wdata->refcount); |
da82f7e7 JL |
2085 | INIT_LIST_HEAD(&wdata->list); |
2086 | init_completion(&wdata->done); | |
2087 | INIT_WORK(&wdata->work, complete); | |
c28c89fc JL |
2088 | } |
2089 | return wdata; | |
2090 | } | |
2091 | ||
2092 | /* | |
7c9421e1 | 2093 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
2094 | * workqueue completion task. |
2095 | */ | |
2096 | static void | |
2097 | cifs_writev_callback(struct mid_q_entry *mid) | |
2098 | { | |
2099 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 2100 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2101 | unsigned int written; |
2102 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
2103 | ||
7c9421e1 | 2104 | switch (mid->mid_state) { |
c28c89fc JL |
2105 | case MID_RESPONSE_RECEIVED: |
2106 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
2107 | if (wdata->result != 0) | |
2108 | break; | |
2109 | ||
2110 | written = le16_to_cpu(smb->CountHigh); | |
2111 | written <<= 16; | |
2112 | written += le16_to_cpu(smb->Count); | |
2113 | /* | |
2114 | * Mask off high 16 bits when bytes written as returned | |
2115 | * by the server is greater than bytes requested by the | |
2116 | * client. OS/2 servers are known to set incorrect | |
2117 | * CountHigh values. | |
2118 | */ | |
2119 | if (written > wdata->bytes) | |
2120 | written &= 0xFFFF; | |
2121 | ||
2122 | if (written < wdata->bytes) | |
2123 | wdata->result = -ENOSPC; | |
2124 | else | |
2125 | wdata->bytes = written; | |
2126 | break; | |
2127 | case MID_REQUEST_SUBMITTED: | |
2128 | case MID_RETRY_NEEDED: | |
2129 | wdata->result = -EAGAIN; | |
2130 | break; | |
2131 | default: | |
2132 | wdata->result = -EIO; | |
2133 | break; | |
2134 | } | |
2135 | ||
da472fc8 | 2136 | queue_work(cifsiod_wq, &wdata->work); |
c28c89fc | 2137 | DeleteMidQEntry(mid); |
2d86dbc9 | 2138 | cifs_add_credits(tcon->ses->server, 1); |
c28c89fc JL |
2139 | } |
2140 | ||
2141 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
2142 | int | |
2143 | cifs_async_writev(struct cifs_writedata *wdata) | |
2144 | { | |
2145 | int i, rc = -EACCES; | |
2146 | WRITE_REQ *smb = NULL; | |
2147 | int wct; | |
96daf2b0 | 2148 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
2149 | struct kvec *iov = NULL; |
2150 | ||
2151 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
2152 | wct = 14; | |
2153 | } else { | |
2154 | wct = 12; | |
2155 | if (wdata->offset >> 32 > 0) { | |
2156 | /* can not handle big offset for old srv */ | |
2157 | return -EIO; | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
2162 | if (rc) | |
2163 | goto async_writev_out; | |
2164 | ||
2165 | /* 1 iov per page + 1 for header */ | |
2166 | iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS); | |
2167 | if (iov == NULL) { | |
2168 | rc = -ENOMEM; | |
2169 | goto async_writev_out; | |
2170 | } | |
2171 | ||
fe5f5d2e JL |
2172 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
2173 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 2174 | |
c28c89fc JL |
2175 | smb->AndXCommand = 0xFF; /* none */ |
2176 | smb->Fid = wdata->cfile->netfid; | |
2177 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); | |
2178 | if (wct == 14) | |
2179 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
2180 | smb->Reserved = 0xFFFFFFFF; | |
2181 | smb->WriteMode = 0; | |
2182 | smb->Remaining = 0; | |
2183 | ||
2184 | smb->DataOffset = | |
2185 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
2186 | ||
2187 | /* 4 for RFC1001 length + 1 for BCC */ | |
2188 | iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; | |
2189 | iov[0].iov_base = smb; | |
2190 | ||
e9492871 JL |
2191 | /* |
2192 | * This function should marshal up the page array into the kvec | |
2193 | * array, reserving [0] for the header. It should kmap the pages | |
2194 | * and set the iov_len properly for each one. It may also set | |
2195 | * wdata->bytes too. | |
2196 | */ | |
2197 | wdata->marshal_iov(iov, wdata); | |
c28c89fc JL |
2198 | |
2199 | cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes); | |
2200 | ||
2201 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
2202 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
2203 | ||
2204 | if (wct == 14) { | |
2205 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
2206 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
2207 | } else { | |
2208 | /* wct == 12 */ | |
2209 | struct smb_com_writex_req *smbw = | |
2210 | (struct smb_com_writex_req *)smb; | |
2211 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
2212 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
2213 | iov[0].iov_len += 4; /* pad bigger by four bytes */ | |
2214 | } | |
2215 | ||
2216 | kref_get(&wdata->refcount); | |
2217 | rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1, | |
44d22d84 | 2218 | NULL, cifs_writev_callback, wdata, false); |
c28c89fc JL |
2219 | |
2220 | if (rc == 0) | |
2221 | cifs_stats_inc(&tcon->num_writes); | |
2222 | else | |
2223 | kref_put(&wdata->refcount, cifs_writedata_release); | |
2224 | ||
2225 | /* send is done, unmap pages */ | |
2226 | for (i = 0; i < wdata->nr_pages; i++) | |
2227 | kunmap(wdata->pages[i]); | |
2228 | ||
2229 | async_writev_out: | |
2230 | cifs_small_buf_release(smb); | |
2231 | kfree(iov); | |
2232 | return rc; | |
2233 | } | |
2234 | ||
d6e04ae6 | 2235 | int |
fa2989f4 PS |
2236 | CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, |
2237 | unsigned int *nbytes, struct kvec *iov, int n_vec, | |
2238 | const int long_op) | |
1da177e4 LT |
2239 | { |
2240 | int rc = -EACCES; | |
2241 | WRITE_REQ *pSMB = NULL; | |
ec637e3f | 2242 | int wct; |
d6e04ae6 | 2243 | int smb_hdr_len; |
ec637e3f | 2244 | int resp_buf_type = 0; |
fa2989f4 PS |
2245 | __u32 pid = io_parms->pid; |
2246 | __u16 netfid = io_parms->netfid; | |
2247 | __u64 offset = io_parms->offset; | |
96daf2b0 | 2248 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 2249 | unsigned int count = io_parms->length; |
1da177e4 | 2250 | |
fbec9ab9 JL |
2251 | *nbytes = 0; |
2252 | ||
b6b38f70 | 2253 | cFYI(1, "write2 at %lld %d bytes", (long long)offset, count); |
ff7feac9 | 2254 | |
4c3130ef | 2255 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 2256 | wct = 14; |
4c3130ef | 2257 | } else { |
8cc64c6e | 2258 | wct = 12; |
4c3130ef SF |
2259 | if ((offset >> 32) > 0) { |
2260 | /* can not handle big offset for old srv */ | |
2261 | return -EIO; | |
2262 | } | |
2263 | } | |
8cc64c6e | 2264 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
2265 | if (rc) |
2266 | return rc; | |
fa2989f4 PS |
2267 | |
2268 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
2269 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
2270 | ||
1da177e4 LT |
2271 | /* tcon and ses pointer are checked in smb_init */ |
2272 | if (tcon->ses->server == NULL) | |
2273 | return -ECONNABORTED; | |
2274 | ||
d6e04ae6 | 2275 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
2276 | pSMB->Fid = netfid; |
2277 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 2278 | if (wct == 14) |
8cc64c6e | 2279 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
2280 | pSMB->Reserved = 0xFFFFFFFF; |
2281 | pSMB->WriteMode = 0; | |
2282 | pSMB->Remaining = 0; | |
d6e04ae6 | 2283 | |
1da177e4 | 2284 | pSMB->DataOffset = |
50c2f753 | 2285 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 2286 | |
3e84469d SF |
2287 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
2288 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
2289 | /* header + 1 byte pad */ |
2290 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 2291 | if (wct == 14) |
be8e3b00 | 2292 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 2293 | else /* wct == 12 */ |
be8e3b00 | 2294 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 2295 | if (wct == 14) |
8cc64c6e SF |
2296 | pSMB->ByteCount = cpu_to_le16(count + 1); |
2297 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 2298 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
2299 | (struct smb_com_writex_req *)pSMB; |
2300 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
2301 | } | |
3e84469d | 2302 | iov[0].iov_base = pSMB; |
790fe579 | 2303 | if (wct == 14) |
ec637e3f SF |
2304 | iov[0].iov_len = smb_hdr_len + 4; |
2305 | else /* wct == 12 pad bigger by four bytes */ | |
2306 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 2307 | |
1da177e4 | 2308 | |
ec637e3f | 2309 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, |
133672ef | 2310 | long_op); |
a4544347 | 2311 | cifs_stats_inc(&tcon->num_writes); |
1da177e4 | 2312 | if (rc) { |
b6b38f70 | 2313 | cFYI(1, "Send error Write2 = %d", rc); |
790fe579 | 2314 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
2315 | /* presumably this can not happen, but best to be safe */ |
2316 | rc = -EIO; | |
d6e04ae6 | 2317 | } else { |
ad7a2926 | 2318 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae6 SF |
2319 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
2320 | *nbytes = (*nbytes) << 16; | |
2321 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
2322 | |
2323 | /* | |
2324 | * Mask off high 16 bits when bytes written as returned by the | |
2325 | * server is greater than bytes requested by the client. OS/2 | |
2326 | * servers are known to set incorrect CountHigh values. | |
2327 | */ | |
2328 | if (*nbytes > count) | |
2329 | *nbytes &= 0xFFFF; | |
50c2f753 | 2330 | } |
1da177e4 | 2331 | |
4b8f930f | 2332 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579 | 2333 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 2334 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 2335 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 2336 | cifs_buf_release(iov[0].iov_base); |
1da177e4 | 2337 | |
50c2f753 | 2338 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2339 | since file handle passed in no longer valid */ |
2340 | ||
2341 | return rc; | |
2342 | } | |
d6e04ae6 | 2343 | |
9ee305b7 PS |
2344 | int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid, |
2345 | const __u8 lock_type, const __u32 num_unlock, | |
2346 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) | |
2347 | { | |
2348 | int rc = 0; | |
2349 | LOCK_REQ *pSMB = NULL; | |
2350 | struct kvec iov[2]; | |
2351 | int resp_buf_type; | |
2352 | __u16 count; | |
2353 | ||
2354 | cFYI(1, "cifs_lockv num lock %d num unlock %d", num_lock, num_unlock); | |
2355 | ||
2356 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
2357 | if (rc) | |
2358 | return rc; | |
2359 | ||
2360 | pSMB->Timeout = 0; | |
2361 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
2362 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
2363 | pSMB->LockType = lock_type; | |
2364 | pSMB->AndXCommand = 0xFF; /* none */ | |
2365 | pSMB->Fid = netfid; /* netfid stays le */ | |
2366 | ||
2367 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2368 | inc_rfc1001_len(pSMB, count); | |
2369 | pSMB->ByteCount = cpu_to_le16(count); | |
2370 | ||
2371 | iov[0].iov_base = (char *)pSMB; | |
2372 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
2373 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2374 | iov[1].iov_base = (char *)buf; | |
2375 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
2376 | ||
2377 | cifs_stats_inc(&tcon->num_locks); | |
2378 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); | |
2379 | if (rc) | |
2380 | cFYI(1, "Send error in cifs_lockv = %d", rc); | |
2381 | ||
2382 | return rc; | |
2383 | } | |
d6e04ae6 | 2384 | |
1da177e4 | 2385 | int |
96daf2b0 | 2386 | CIFSSMBLock(const int xid, struct cifs_tcon *tcon, |
03776f45 | 2387 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 2388 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
2389 | const __u32 numLock, const __u8 lockType, |
2390 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
2391 | { |
2392 | int rc = 0; | |
2393 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 2394 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 LT |
2395 | int bytes_returned; |
2396 | int timeout = 0; | |
2397 | __u16 count; | |
2398 | ||
b6b38f70 | 2399 | cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock); |
46810cbf SF |
2400 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
2401 | ||
1da177e4 LT |
2402 | if (rc) |
2403 | return rc; | |
2404 | ||
790fe579 | 2405 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
133672ef | 2406 | timeout = CIFS_ASYNC_OP; /* no response expected */ |
1da177e4 | 2407 | pSMB->Timeout = 0; |
4b18f2a9 | 2408 | } else if (waitFlag) { |
133672ef | 2409 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
2410 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
2411 | } else { | |
2412 | pSMB->Timeout = 0; | |
2413 | } | |
2414 | ||
2415 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
2416 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
2417 | pSMB->LockType = lockType; | |
12fed00d | 2418 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
2419 | pSMB->AndXCommand = 0xFF; /* none */ |
2420 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
2421 | ||
790fe579 | 2422 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 2423 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
2424 | /* BB where to store pid high? */ |
2425 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
2426 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
2427 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
2428 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
2429 | count = sizeof(LOCKING_ANDX_RANGE); | |
2430 | } else { | |
2431 | /* oplock break */ | |
2432 | count = 0; | |
2433 | } | |
be8e3b00 | 2434 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2435 | pSMB->ByteCount = cpu_to_le16(count); |
2436 | ||
7ee1af76 JA |
2437 | if (waitFlag) { |
2438 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
aaa9bbe0 | 2439 | (struct smb_hdr *) pSMB, &bytes_returned); |
133672ef | 2440 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2441 | } else { |
792af7b0 | 2442 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, timeout); |
133672ef | 2443 | /* SMB buffer freed by function above */ |
7ee1af76 | 2444 | } |
a4544347 | 2445 | cifs_stats_inc(&tcon->num_locks); |
ad7a2926 | 2446 | if (rc) |
b6b38f70 | 2447 | cFYI(1, "Send error in Lock = %d", rc); |
1da177e4 | 2448 | |
50c2f753 | 2449 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
2450 | since file handle passed in no longer valid */ |
2451 | return rc; | |
2452 | } | |
2453 | ||
08547b03 | 2454 | int |
96daf2b0 | 2455 | CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon, |
4f6bcec9 PS |
2456 | const __u16 smb_file_id, const __u32 netpid, const int get_flag, |
2457 | const __u64 len, struct file_lock *pLockData, | |
2458 | const __u16 lock_type, const bool waitFlag) | |
08547b03 SF |
2459 | { |
2460 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2461 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
2462 | struct cifs_posix_lock *parm_data; |
2463 | int rc = 0; | |
3a5ff61c | 2464 | int timeout = 0; |
08547b03 | 2465 | int bytes_returned = 0; |
133672ef | 2466 | int resp_buf_type = 0; |
08547b03 | 2467 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 2468 | struct kvec iov[1]; |
08547b03 | 2469 | |
b6b38f70 | 2470 | cFYI(1, "Posix Lock"); |
fc94cdb9 | 2471 | |
790fe579 | 2472 | if (pLockData == NULL) |
ed5f0370 | 2473 | return -EINVAL; |
fc94cdb9 | 2474 | |
08547b03 SF |
2475 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
2476 | ||
2477 | if (rc) | |
2478 | return rc; | |
2479 | ||
2480 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
2481 | ||
50c2f753 | 2482 | params = 6; |
08547b03 SF |
2483 | pSMB->MaxSetupCount = 0; |
2484 | pSMB->Reserved = 0; | |
2485 | pSMB->Flags = 0; | |
08547b03 SF |
2486 | pSMB->Reserved2 = 0; |
2487 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2488 | offset = param_offset + params; | |
2489 | ||
08547b03 SF |
2490 | count = sizeof(struct cifs_posix_lock); |
2491 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2492 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2493 | pSMB->SetupCount = 1; |
2494 | pSMB->Reserved3 = 0; | |
790fe579 | 2495 | if (get_flag) |
08547b03 SF |
2496 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2497 | else | |
2498 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2499 | byte_count = 3 /* pad */ + params + count; | |
2500 | pSMB->DataCount = cpu_to_le16(count); | |
2501 | pSMB->ParameterCount = cpu_to_le16(params); | |
2502 | pSMB->TotalDataCount = pSMB->DataCount; | |
2503 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2504 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
50c2f753 | 2505 | parm_data = (struct cifs_posix_lock *) |
08547b03 SF |
2506 | (((char *) &pSMB->hdr.Protocol) + offset); |
2507 | ||
2508 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2509 | if (waitFlag) { |
133672ef | 2510 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2511 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2512 | pSMB->Timeout = cpu_to_le32(-1); |
2513 | } else | |
2514 | pSMB->Timeout = 0; | |
2515 | ||
4f6bcec9 | 2516 | parm_data->pid = cpu_to_le32(netpid); |
fc94cdb9 | 2517 | parm_data->start = cpu_to_le64(pLockData->fl_start); |
cec6815a | 2518 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2519 | |
2520 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2521 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2522 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2523 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2524 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2525 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2526 | if (waitFlag) { |
2527 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2528 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2529 | } else { | |
133672ef | 2530 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2531 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef SF |
2532 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
2533 | &resp_buf_type, timeout); | |
2534 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
2535 | not try to free it twice below on exit */ | |
2536 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
7ee1af76 JA |
2537 | } |
2538 | ||
08547b03 | 2539 | if (rc) { |
b6b38f70 | 2540 | cFYI(1, "Send error in Posix Lock = %d", rc); |
fc94cdb9 SF |
2541 | } else if (get_flag) { |
2542 | /* lock structure can be returned on get */ | |
2543 | __u16 data_offset; | |
2544 | __u16 data_count; | |
2545 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2546 | ||
820a803f | 2547 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2548 | rc = -EIO; /* bad smb */ |
2549 | goto plk_err_exit; | |
2550 | } | |
fc94cdb9 SF |
2551 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2552 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2553 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2554 | rc = -EIO; |
2555 | goto plk_err_exit; | |
2556 | } | |
2557 | parm_data = (struct cifs_posix_lock *) | |
2558 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
f05337c6 | 2559 | if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2560 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2561 | else { |
2562 | if (parm_data->lock_type == | |
2563 | __constant_cpu_to_le16(CIFS_RDLCK)) | |
2564 | pLockData->fl_type = F_RDLCK; | |
2565 | else if (parm_data->lock_type == | |
2566 | __constant_cpu_to_le16(CIFS_WRLCK)) | |
2567 | pLockData->fl_type = F_WRLCK; | |
2568 | ||
5443d130 SF |
2569 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2570 | pLockData->fl_end = pLockData->fl_start + | |
2571 | le64_to_cpu(parm_data->length) - 1; | |
2572 | pLockData->fl_pid = le32_to_cpu(parm_data->pid); | |
f05337c6 | 2573 | } |
08547b03 | 2574 | } |
50c2f753 | 2575 | |
fc94cdb9 | 2576 | plk_err_exit: |
08547b03 SF |
2577 | if (pSMB) |
2578 | cifs_small_buf_release(pSMB); | |
2579 | ||
133672ef SF |
2580 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
2581 | cifs_small_buf_release(iov[0].iov_base); | |
2582 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
2583 | cifs_buf_release(iov[0].iov_base); | |
2584 | ||
08547b03 SF |
2585 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2586 | since file handle passed in no longer valid */ | |
2587 | ||
2588 | return rc; | |
2589 | } | |
2590 | ||
2591 | ||
1da177e4 | 2592 | int |
96daf2b0 | 2593 | CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2594 | { |
2595 | int rc = 0; | |
2596 | CLOSE_REQ *pSMB = NULL; | |
b6b38f70 | 2597 | cFYI(1, "In CIFSSMBClose"); |
1da177e4 LT |
2598 | |
2599 | /* do not retry on dead session on close */ | |
2600 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2601 | if (rc == -EAGAIN) |
1da177e4 LT |
2602 | return 0; |
2603 | if (rc) | |
2604 | return rc; | |
2605 | ||
1da177e4 | 2606 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2607 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2608 | pSMB->ByteCount = 0; |
792af7b0 | 2609 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
a4544347 | 2610 | cifs_stats_inc(&tcon->num_closes); |
1da177e4 | 2611 | if (rc) { |
790fe579 | 2612 | if (rc != -EINTR) { |
1da177e4 | 2613 | /* EINTR is expected when user ctl-c to kill app */ |
b6b38f70 | 2614 | cERROR(1, "Send error in Close = %d", rc); |
1da177e4 LT |
2615 | } |
2616 | } | |
2617 | ||
1da177e4 | 2618 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2619 | if (rc == -EAGAIN) |
1da177e4 LT |
2620 | rc = 0; |
2621 | ||
2622 | return rc; | |
2623 | } | |
2624 | ||
b298f223 | 2625 | int |
96daf2b0 | 2626 | CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2627 | { |
2628 | int rc = 0; | |
2629 | FLUSH_REQ *pSMB = NULL; | |
b6b38f70 | 2630 | cFYI(1, "In CIFSSMBFlush"); |
b298f223 SF |
2631 | |
2632 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2633 | if (rc) | |
2634 | return rc; | |
2635 | ||
2636 | pSMB->FileID = (__u16) smb_file_id; | |
2637 | pSMB->ByteCount = 0; | |
792af7b0 | 2638 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
b298f223 SF |
2639 | cifs_stats_inc(&tcon->num_flushes); |
2640 | if (rc) | |
b6b38f70 | 2641 | cERROR(1, "Send error in Flush = %d", rc); |
b298f223 SF |
2642 | |
2643 | return rc; | |
2644 | } | |
2645 | ||
1da177e4 | 2646 | int |
96daf2b0 | 2647 | CIFSSMBRename(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2648 | const char *fromName, const char *toName, |
737b758c | 2649 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2650 | { |
2651 | int rc = 0; | |
2652 | RENAME_REQ *pSMB = NULL; | |
2653 | RENAME_RSP *pSMBr = NULL; | |
2654 | int bytes_returned; | |
2655 | int name_len, name_len2; | |
2656 | __u16 count; | |
2657 | ||
b6b38f70 | 2658 | cFYI(1, "In CIFSSMBRename"); |
1da177e4 LT |
2659 | renameRetry: |
2660 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2661 | (void **) &pSMBr); | |
2662 | if (rc) | |
2663 | return rc; | |
2664 | ||
2665 | pSMB->BufferFormat = 0x04; | |
2666 | pSMB->SearchAttributes = | |
2667 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2668 | ATTR_DIRECTORY); | |
2669 | ||
2670 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2671 | name_len = | |
acbbb76a SF |
2672 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
2673 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2674 | name_len++; /* trailing null */ |
2675 | name_len *= 2; | |
2676 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2677 | /* protocol requires ASCII signature byte on Unicode string */ | |
2678 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2679 | name_len2 = | |
acbbb76a SF |
2680 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2681 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2682 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2683 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2684 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2685 | name_len = strnlen(fromName, PATH_MAX); |
2686 | name_len++; /* trailing null */ | |
2687 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2688 | name_len2 = strnlen(toName, PATH_MAX); | |
2689 | name_len2++; /* trailing null */ | |
2690 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2691 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2692 | name_len2++; /* trailing null */ | |
2693 | name_len2++; /* signature byte */ | |
2694 | } | |
2695 | ||
2696 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2697 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2698 | pSMB->ByteCount = cpu_to_le16(count); |
2699 | ||
2700 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2701 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2702 | cifs_stats_inc(&tcon->num_renames); |
ad7a2926 | 2703 | if (rc) |
b6b38f70 | 2704 | cFYI(1, "Send error in rename = %d", rc); |
1da177e4 | 2705 | |
1da177e4 LT |
2706 | cifs_buf_release(pSMB); |
2707 | ||
2708 | if (rc == -EAGAIN) | |
2709 | goto renameRetry; | |
2710 | ||
2711 | return rc; | |
2712 | } | |
2713 | ||
96daf2b0 | 2714 | int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon, |
391e5755 | 2715 | int netfid, const char *target_name, |
50c2f753 | 2716 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2717 | { |
2718 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2719 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2720 | struct set_file_rename *rename_info; |
1da177e4 LT |
2721 | char *data_offset; |
2722 | char dummy_string[30]; | |
2723 | int rc = 0; | |
2724 | int bytes_returned = 0; | |
2725 | int len_of_str; | |
2726 | __u16 params, param_offset, offset, count, byte_count; | |
2727 | ||
b6b38f70 | 2728 | cFYI(1, "Rename to File by handle"); |
1da177e4 LT |
2729 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2730 | (void **) &pSMBr); | |
2731 | if (rc) | |
2732 | return rc; | |
2733 | ||
2734 | params = 6; | |
2735 | pSMB->MaxSetupCount = 0; | |
2736 | pSMB->Reserved = 0; | |
2737 | pSMB->Flags = 0; | |
2738 | pSMB->Timeout = 0; | |
2739 | pSMB->Reserved2 = 0; | |
2740 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2741 | offset = param_offset + params; | |
2742 | ||
2743 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2744 | rename_info = (struct set_file_rename *) data_offset; | |
2745 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2746 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2747 | pSMB->SetupCount = 1; |
2748 | pSMB->Reserved3 = 0; | |
2749 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2750 | byte_count = 3 /* pad */ + params; | |
2751 | pSMB->ParameterCount = cpu_to_le16(params); | |
2752 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2753 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2754 | pSMB->DataOffset = cpu_to_le16(offset); | |
2755 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2756 | rename_info->overwrite = cpu_to_le32(1); | |
2757 | rename_info->root_fid = 0; | |
2758 | /* unicode only call */ | |
790fe579 | 2759 | if (target_name == NULL) { |
50c2f753 | 2760 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2761 | len_of_str = |
2762 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2763 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2764 | } else { |
acbbb76a SF |
2765 | len_of_str = |
2766 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2767 | target_name, PATH_MAX, nls_codepage, |
2768 | remap); | |
1da177e4 LT |
2769 | } |
2770 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
391e5755 | 2771 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4 LT |
2772 | byte_count += count; |
2773 | pSMB->DataCount = cpu_to_le16(count); | |
2774 | pSMB->TotalDataCount = pSMB->DataCount; | |
2775 | pSMB->Fid = netfid; | |
2776 | pSMB->InformationLevel = | |
2777 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2778 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2779 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2780 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2781 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2782 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
a4544347 | 2783 | cifs_stats_inc(&pTcon->num_t2renames); |
ad7a2926 | 2784 | if (rc) |
b6b38f70 | 2785 | cFYI(1, "Send error in Rename (by file handle) = %d", rc); |
a5a2b489 | 2786 | |
1da177e4 LT |
2787 | cifs_buf_release(pSMB); |
2788 | ||
2789 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2790 | since file handle passed in no longer valid */ | |
2791 | ||
2792 | return rc; | |
2793 | } | |
2794 | ||
2795 | int | |
96daf2b0 | 2796 | CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName, |
50c2f753 SF |
2797 | const __u16 target_tid, const char *toName, const int flags, |
2798 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2799 | { |
2800 | int rc = 0; | |
2801 | COPY_REQ *pSMB = NULL; | |
2802 | COPY_RSP *pSMBr = NULL; | |
2803 | int bytes_returned; | |
2804 | int name_len, name_len2; | |
2805 | __u16 count; | |
2806 | ||
b6b38f70 | 2807 | cFYI(1, "In CIFSSMBCopy"); |
1da177e4 LT |
2808 | copyRetry: |
2809 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2810 | (void **) &pSMBr); | |
2811 | if (rc) | |
2812 | return rc; | |
2813 | ||
2814 | pSMB->BufferFormat = 0x04; | |
2815 | pSMB->Tid2 = target_tid; | |
2816 | ||
2817 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2818 | ||
2819 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2820 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2821 | fromName, PATH_MAX, nls_codepage, | |
2822 | remap); | |
1da177e4 LT |
2823 | name_len++; /* trailing null */ |
2824 | name_len *= 2; | |
2825 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2826 | /* protocol requires ASCII signature byte on Unicode string */ | |
2827 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2828 | name_len2 = |
acbbb76a SF |
2829 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2830 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2831 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2832 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 2833 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2834 | name_len = strnlen(fromName, PATH_MAX); |
2835 | name_len++; /* trailing null */ | |
2836 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2837 | name_len2 = strnlen(toName, PATH_MAX); | |
2838 | name_len2++; /* trailing null */ | |
2839 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2840 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2841 | name_len2++; /* trailing null */ | |
2842 | name_len2++; /* signature byte */ | |
2843 | } | |
2844 | ||
2845 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2846 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2847 | pSMB->ByteCount = cpu_to_le16(count); |
2848 | ||
2849 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2850 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2851 | if (rc) { | |
b6b38f70 JP |
2852 | cFYI(1, "Send error in copy = %d with %d files copied", |
2853 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2854 | } |
0d817bc0 | 2855 | cifs_buf_release(pSMB); |
1da177e4 LT |
2856 | |
2857 | if (rc == -EAGAIN) | |
2858 | goto copyRetry; | |
2859 | ||
2860 | return rc; | |
2861 | } | |
2862 | ||
2863 | int | |
96daf2b0 | 2864 | CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 LT |
2865 | const char *fromName, const char *toName, |
2866 | const struct nls_table *nls_codepage) | |
2867 | { | |
2868 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2869 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2870 | char *data_offset; | |
2871 | int name_len; | |
2872 | int name_len_target; | |
2873 | int rc = 0; | |
2874 | int bytes_returned = 0; | |
2875 | __u16 params, param_offset, offset, byte_count; | |
2876 | ||
b6b38f70 | 2877 | cFYI(1, "In Symlink Unix style"); |
1da177e4 LT |
2878 | createSymLinkRetry: |
2879 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2880 | (void **) &pSMBr); | |
2881 | if (rc) | |
2882 | return rc; | |
2883 | ||
2884 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2885 | name_len = | |
acbbb76a SF |
2886 | cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, |
2887 | /* find define for this maxpathcomponent */ | |
2888 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
2889 | name_len++; /* trailing null */ |
2890 | name_len *= 2; | |
2891 | ||
50c2f753 | 2892 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2893 | name_len = strnlen(fromName, PATH_MAX); |
2894 | name_len++; /* trailing null */ | |
2895 | strncpy(pSMB->FileName, fromName, name_len); | |
2896 | } | |
2897 | params = 6 + name_len; | |
2898 | pSMB->MaxSetupCount = 0; | |
2899 | pSMB->Reserved = 0; | |
2900 | pSMB->Flags = 0; | |
2901 | pSMB->Timeout = 0; | |
2902 | pSMB->Reserved2 = 0; | |
2903 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2904 | InformationLevel) - 4; |
1da177e4 LT |
2905 | offset = param_offset + params; |
2906 | ||
2907 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2908 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2909 | name_len_target = | |
acbbb76a SF |
2910 | cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX |
2911 | /* find define for this maxpathcomponent */ | |
2912 | , nls_codepage); | |
1da177e4 LT |
2913 | name_len_target++; /* trailing null */ |
2914 | name_len_target *= 2; | |
50c2f753 | 2915 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2916 | name_len_target = strnlen(toName, PATH_MAX); |
2917 | name_len_target++; /* trailing null */ | |
2918 | strncpy(data_offset, toName, name_len_target); | |
2919 | } | |
2920 | ||
2921 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2922 | /* BB find exact max on data count below from sess */ | |
2923 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2924 | pSMB->SetupCount = 1; | |
2925 | pSMB->Reserved3 = 0; | |
2926 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2927 | byte_count = 3 /* pad */ + params + name_len_target; | |
2928 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2929 | pSMB->ParameterCount = cpu_to_le16(params); | |
2930 | pSMB->TotalDataCount = pSMB->DataCount; | |
2931 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2932 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2933 | pSMB->DataOffset = cpu_to_le16(offset); | |
2934 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2935 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2936 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2937 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2938 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2939 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 2940 | cifs_stats_inc(&tcon->num_symlinks); |
ad7a2926 | 2941 | if (rc) |
b6b38f70 | 2942 | cFYI(1, "Send error in SetPathInfo create symlink = %d", rc); |
1da177e4 | 2943 | |
0d817bc0 | 2944 | cifs_buf_release(pSMB); |
1da177e4 LT |
2945 | |
2946 | if (rc == -EAGAIN) | |
2947 | goto createSymLinkRetry; | |
2948 | ||
2949 | return rc; | |
2950 | } | |
2951 | ||
2952 | int | |
96daf2b0 | 2953 | CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 2954 | const char *fromName, const char *toName, |
737b758c | 2955 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2956 | { |
2957 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2958 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2959 | char *data_offset; | |
2960 | int name_len; | |
2961 | int name_len_target; | |
2962 | int rc = 0; | |
2963 | int bytes_returned = 0; | |
2964 | __u16 params, param_offset, offset, byte_count; | |
2965 | ||
b6b38f70 | 2966 | cFYI(1, "In Create Hard link Unix style"); |
1da177e4 LT |
2967 | createHardLinkRetry: |
2968 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2969 | (void **) &pSMBr); | |
2970 | if (rc) | |
2971 | return rc; | |
2972 | ||
2973 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2974 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2975 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2976 | name_len++; /* trailing null */ |
2977 | name_len *= 2; | |
2978 | ||
50c2f753 | 2979 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
2980 | name_len = strnlen(toName, PATH_MAX); |
2981 | name_len++; /* trailing null */ | |
2982 | strncpy(pSMB->FileName, toName, name_len); | |
2983 | } | |
2984 | params = 6 + name_len; | |
2985 | pSMB->MaxSetupCount = 0; | |
2986 | pSMB->Reserved = 0; | |
2987 | pSMB->Flags = 0; | |
2988 | pSMB->Timeout = 0; | |
2989 | pSMB->Reserved2 = 0; | |
2990 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2991 | InformationLevel) - 4; |
1da177e4 LT |
2992 | offset = param_offset + params; |
2993 | ||
2994 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2995 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2996 | name_len_target = | |
acbbb76a SF |
2997 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2998 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2999 | name_len_target++; /* trailing null */ |
3000 | name_len_target *= 2; | |
50c2f753 | 3001 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3002 | name_len_target = strnlen(fromName, PATH_MAX); |
3003 | name_len_target++; /* trailing null */ | |
3004 | strncpy(data_offset, fromName, name_len_target); | |
3005 | } | |
3006 | ||
3007 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3008 | /* BB find exact max on data count below from sess*/ | |
3009 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3010 | pSMB->SetupCount = 1; | |
3011 | pSMB->Reserved3 = 0; | |
3012 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3013 | byte_count = 3 /* pad */ + params + name_len_target; | |
3014 | pSMB->ParameterCount = cpu_to_le16(params); | |
3015 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3016 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
3017 | pSMB->TotalDataCount = pSMB->DataCount; | |
3018 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3019 | pSMB->DataOffset = cpu_to_le16(offset); | |
3020 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
3021 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3022 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3023 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3024 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3025 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3026 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 3027 | if (rc) |
b6b38f70 | 3028 | cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc); |
1da177e4 LT |
3029 | |
3030 | cifs_buf_release(pSMB); | |
3031 | if (rc == -EAGAIN) | |
3032 | goto createHardLinkRetry; | |
3033 | ||
3034 | return rc; | |
3035 | } | |
3036 | ||
3037 | int | |
96daf2b0 | 3038 | CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3039 | const char *fromName, const char *toName, |
737b758c | 3040 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3041 | { |
3042 | int rc = 0; | |
3043 | NT_RENAME_REQ *pSMB = NULL; | |
3044 | RENAME_RSP *pSMBr = NULL; | |
3045 | int bytes_returned; | |
3046 | int name_len, name_len2; | |
3047 | __u16 count; | |
3048 | ||
b6b38f70 | 3049 | cFYI(1, "In CIFSCreateHardLink"); |
1da177e4 LT |
3050 | winCreateHardLinkRetry: |
3051 | ||
3052 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
3053 | (void **) &pSMBr); | |
3054 | if (rc) | |
3055 | return rc; | |
3056 | ||
3057 | pSMB->SearchAttributes = | |
3058 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3059 | ATTR_DIRECTORY); | |
3060 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
3061 | pSMB->ClusterCount = 0; | |
3062 | ||
3063 | pSMB->BufferFormat = 0x04; | |
3064 | ||
3065 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3066 | name_len = | |
acbbb76a SF |
3067 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, |
3068 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3069 | name_len++; /* trailing null */ |
3070 | name_len *= 2; | |
fcc7c09d JL |
3071 | |
3072 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
3073 | pSMB->OldFileName[name_len] = 0x04; | |
3074 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 3075 | name_len2 = |
acbbb76a SF |
3076 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
3077 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3078 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
3079 | name_len2 *= 2; /* convert to bytes */ | |
50c2f753 | 3080 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3081 | name_len = strnlen(fromName, PATH_MAX); |
3082 | name_len++; /* trailing null */ | |
3083 | strncpy(pSMB->OldFileName, fromName, name_len); | |
3084 | name_len2 = strnlen(toName, PATH_MAX); | |
3085 | name_len2++; /* trailing null */ | |
3086 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
3087 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
3088 | name_len2++; /* trailing null */ | |
3089 | name_len2++; /* signature byte */ | |
3090 | } | |
3091 | ||
3092 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 3093 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
3094 | pSMB->ByteCount = cpu_to_le16(count); |
3095 | ||
3096 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3097 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 3098 | cifs_stats_inc(&tcon->num_hardlinks); |
ad7a2926 | 3099 | if (rc) |
b6b38f70 | 3100 | cFYI(1, "Send error in hard link (NT rename) = %d", rc); |
ad7a2926 | 3101 | |
1da177e4 LT |
3102 | cifs_buf_release(pSMB); |
3103 | if (rc == -EAGAIN) | |
3104 | goto winCreateHardLinkRetry; | |
3105 | ||
3106 | return rc; | |
3107 | } | |
3108 | ||
3109 | int | |
96daf2b0 | 3110 | CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *tcon, |
460b9696 | 3111 | const unsigned char *searchName, char **symlinkinfo, |
1da177e4 LT |
3112 | const struct nls_table *nls_codepage) |
3113 | { | |
3114 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
3115 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3116 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3117 | int rc = 0; | |
3118 | int bytes_returned; | |
3119 | int name_len; | |
3120 | __u16 params, byte_count; | |
460b9696 | 3121 | char *data_start; |
1da177e4 | 3122 | |
b6b38f70 | 3123 | cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName); |
1da177e4 LT |
3124 | |
3125 | querySymLinkRetry: | |
3126 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3127 | (void **) &pSMBr); | |
3128 | if (rc) | |
3129 | return rc; | |
3130 | ||
3131 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3132 | name_len = | |
acbbb76a SF |
3133 | cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, |
3134 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
3135 | name_len++; /* trailing null */ |
3136 | name_len *= 2; | |
50c2f753 | 3137 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3138 | name_len = strnlen(searchName, PATH_MAX); |
3139 | name_len++; /* trailing null */ | |
3140 | strncpy(pSMB->FileName, searchName, name_len); | |
3141 | } | |
3142 | ||
3143 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3144 | pSMB->TotalDataCount = 0; | |
3145 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 3146 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
3147 | pSMB->MaxSetupCount = 0; |
3148 | pSMB->Reserved = 0; | |
3149 | pSMB->Flags = 0; | |
3150 | pSMB->Timeout = 0; | |
3151 | pSMB->Reserved2 = 0; | |
3152 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3153 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3154 | pSMB->DataCount = 0; |
3155 | pSMB->DataOffset = 0; | |
3156 | pSMB->SetupCount = 1; | |
3157 | pSMB->Reserved3 = 0; | |
3158 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3159 | byte_count = params + 1 /* pad */ ; | |
3160 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3161 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3162 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
3163 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3164 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3165 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3166 | ||
3167 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3168 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3169 | if (rc) { | |
b6b38f70 | 3170 | cFYI(1, "Send error in QuerySymLinkInfo = %d", rc); |
1da177e4 LT |
3171 | } else { |
3172 | /* decode response */ | |
3173 | ||
3174 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 3175 | /* BB also check enough total bytes returned */ |
820a803f | 3176 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 3177 | rc = -EIO; |
1da177e4 | 3178 | else { |
0e0d2cf3 | 3179 | bool is_unicode; |
460b9696 JL |
3180 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
3181 | ||
3182 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
3183 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 3184 | |
0e0d2cf3 SF |
3185 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
3186 | is_unicode = true; | |
3187 | else | |
3188 | is_unicode = false; | |
3189 | ||
737b758c | 3190 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
3191 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
3192 | count, is_unicode, nls_codepage); | |
8b6427a2 | 3193 | if (!*symlinkinfo) |
460b9696 | 3194 | rc = -ENOMEM; |
1da177e4 LT |
3195 | } |
3196 | } | |
3197 | cifs_buf_release(pSMB); | |
3198 | if (rc == -EAGAIN) | |
3199 | goto querySymLinkRetry; | |
3200 | return rc; | |
3201 | } | |
3202 | ||
c52a9554 SF |
3203 | #ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL |
3204 | /* | |
3205 | * Recent Windows versions now create symlinks more frequently | |
3206 | * and they use the "reparse point" mechanism below. We can of course | |
3207 | * do symlinks nicely to Samba and other servers which support the | |
3208 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
3209 | * "MF" symlinks optionally, but for recent Windows we really need to | |
3210 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
3211 | * In the interim this code has been moved to its own config option so | |
3212 | * it is not compiled in by default until callers fixed up and more tested. | |
3213 | */ | |
1da177e4 | 3214 | int |
96daf2b0 | 3215 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 3216 | const unsigned char *searchName, |
50c2f753 | 3217 | char *symlinkinfo, const int buflen, __u16 fid, |
1da177e4 LT |
3218 | const struct nls_table *nls_codepage) |
3219 | { | |
3220 | int rc = 0; | |
3221 | int bytes_returned; | |
50c2f753 SF |
3222 | struct smb_com_transaction_ioctl_req *pSMB; |
3223 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
1da177e4 | 3224 | |
b6b38f70 | 3225 | cFYI(1, "In Windows reparse style QueryLink for path %s", searchName); |
1da177e4 LT |
3226 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
3227 | (void **) &pSMBr); | |
3228 | if (rc) | |
3229 | return rc; | |
3230 | ||
3231 | pSMB->TotalParameterCount = 0 ; | |
3232 | pSMB->TotalDataCount = 0; | |
3233 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
3234 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 3235 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
3236 | pSMB->MaxSetupCount = 4; |
3237 | pSMB->Reserved = 0; | |
3238 | pSMB->ParameterOffset = 0; | |
3239 | pSMB->DataCount = 0; | |
3240 | pSMB->DataOffset = 0; | |
3241 | pSMB->SetupCount = 4; | |
3242 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
3243 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3244 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
3245 | pSMB->IsFsctl = 1; /* FSCTL */ | |
3246 | pSMB->IsRootFlag = 0; | |
3247 | pSMB->Fid = fid; /* file handle always le */ | |
3248 | pSMB->ByteCount = 0; | |
3249 | ||
3250 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3251 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3252 | if (rc) { | |
b6b38f70 | 3253 | cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc); |
1da177e4 LT |
3254 | } else { /* decode response */ |
3255 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3256 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
820a803f JL |
3257 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
3258 | /* BB also check enough total bytes returned */ | |
1da177e4 | 3259 | rc = -EIO; /* bad smb */ |
afe48c31 SF |
3260 | goto qreparse_out; |
3261 | } | |
3262 | if (data_count && (data_count < 2048)) { | |
3263 | char *end_of_smb = 2 /* sizeof byte count */ + | |
820a803f | 3264 | get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
1da177e4 | 3265 | |
afe48c31 | 3266 | struct reparse_data *reparse_buf = |
50c2f753 SF |
3267 | (struct reparse_data *) |
3268 | ((char *)&pSMBr->hdr.Protocol | |
3269 | + data_offset); | |
afe48c31 SF |
3270 | if ((char *)reparse_buf >= end_of_smb) { |
3271 | rc = -EIO; | |
3272 | goto qreparse_out; | |
3273 | } | |
3274 | if ((reparse_buf->LinkNamesBuf + | |
3275 | reparse_buf->TargetNameOffset + | |
3276 | reparse_buf->TargetNameLen) > end_of_smb) { | |
b6b38f70 | 3277 | cFYI(1, "reparse buf beyond SMB"); |
afe48c31 SF |
3278 | rc = -EIO; |
3279 | goto qreparse_out; | |
3280 | } | |
50c2f753 | 3281 | |
afe48c31 SF |
3282 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { |
3283 | cifs_from_ucs2(symlinkinfo, (__le16 *) | |
50c2f753 SF |
3284 | (reparse_buf->LinkNamesBuf + |
3285 | reparse_buf->TargetNameOffset), | |
afe48c31 SF |
3286 | buflen, |
3287 | reparse_buf->TargetNameLen, | |
3288 | nls_codepage, 0); | |
3289 | } else { /* ASCII names */ | |
3290 | strncpy(symlinkinfo, | |
3291 | reparse_buf->LinkNamesBuf + | |
3292 | reparse_buf->TargetNameOffset, | |
3293 | min_t(const int, buflen, | |
3294 | reparse_buf->TargetNameLen)); | |
1da177e4 | 3295 | } |
afe48c31 SF |
3296 | } else { |
3297 | rc = -EIO; | |
b6b38f70 JP |
3298 | cFYI(1, "Invalid return data count on " |
3299 | "get reparse info ioctl"); | |
1da177e4 | 3300 | } |
afe48c31 SF |
3301 | symlinkinfo[buflen] = 0; /* just in case so the caller |
3302 | does not go off the end of the buffer */ | |
b6b38f70 | 3303 | cFYI(1, "readlink result - %s", symlinkinfo); |
1da177e4 | 3304 | } |
989c7e51 | 3305 | |
1da177e4 | 3306 | qreparse_out: |
4a6d87f1 | 3307 | cifs_buf_release(pSMB); |
1da177e4 LT |
3308 | |
3309 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3310 | since file handle passed in no longer valid */ | |
3311 | ||
3312 | return rc; | |
3313 | } | |
c52a9554 | 3314 | #endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */ |
1da177e4 LT |
3315 | |
3316 | #ifdef CONFIG_CIFS_POSIX | |
3317 | ||
3318 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
50c2f753 SF |
3319 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, |
3320 | struct cifs_posix_ace *cifs_ace) | |
1da177e4 LT |
3321 | { |
3322 | /* u8 cifs fields do not need le conversion */ | |
ff7feac9 SF |
3323 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
3324 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
3325 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
b6b38f70 | 3326 | /* cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id); */ |
1da177e4 LT |
3327 | |
3328 | return; | |
3329 | } | |
3330 | ||
3331 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
50c2f753 SF |
3332 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
3333 | const int acl_type, const int size_of_data_area) | |
1da177e4 LT |
3334 | { |
3335 | int size = 0; | |
3336 | int i; | |
3337 | __u16 count; | |
50c2f753 SF |
3338 | struct cifs_posix_ace *pACE; |
3339 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
3340 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
1da177e4 LT |
3341 | |
3342 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
3343 | return -EOPNOTSUPP; | |
3344 | ||
790fe579 | 3345 | if (acl_type & ACL_TYPE_ACCESS) { |
1da177e4 LT |
3346 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3347 | pACE = &cifs_acl->ace_array[0]; | |
3348 | size = sizeof(struct cifs_posix_acl); | |
3349 | size += sizeof(struct cifs_posix_ace) * count; | |
3350 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3351 | if (size_of_data_area < size) { |
b6b38f70 JP |
3352 | cFYI(1, "bad CIFS POSIX ACL size %d vs. %d", |
3353 | size_of_data_area, size); | |
1da177e4 LT |
3354 | return -EINVAL; |
3355 | } | |
790fe579 | 3356 | } else if (acl_type & ACL_TYPE_DEFAULT) { |
1da177e4 LT |
3357 | count = le16_to_cpu(cifs_acl->access_entry_count); |
3358 | size = sizeof(struct cifs_posix_acl); | |
3359 | size += sizeof(struct cifs_posix_ace) * count; | |
3360 | /* skip past access ACEs to get to default ACEs */ | |
3361 | pACE = &cifs_acl->ace_array[count]; | |
3362 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
3363 | size += sizeof(struct cifs_posix_ace) * count; | |
3364 | /* check if we would go beyond end of SMB */ | |
790fe579 | 3365 | if (size_of_data_area < size) |
1da177e4 LT |
3366 | return -EINVAL; |
3367 | } else { | |
3368 | /* illegal type */ | |
3369 | return -EINVAL; | |
3370 | } | |
3371 | ||
3372 | size = posix_acl_xattr_size(count); | |
790fe579 | 3373 | if ((buflen == 0) || (local_acl == NULL)) { |
50c2f753 | 3374 | /* used to query ACL EA size */ |
790fe579 | 3375 | } else if (size > buflen) { |
1da177e4 LT |
3376 | return -ERANGE; |
3377 | } else /* buffer big enough */ { | |
ff7feac9 | 3378 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f753 SF |
3379 | for (i = 0; i < count ; i++) { |
3380 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
3381 | pACE++; | |
1da177e4 LT |
3382 | } |
3383 | } | |
3384 | return size; | |
3385 | } | |
3386 | ||
50c2f753 SF |
3387 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
3388 | const posix_acl_xattr_entry *local_ace) | |
1da177e4 LT |
3389 | { |
3390 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
3391 | ||
ff7feac9 SF |
3392 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
3393 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
1da177e4 | 3394 | /* BB is there a better way to handle the large uid? */ |
790fe579 | 3395 | if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4 LT |
3396 | /* Probably no need to le convert -1 on any arch but can not hurt */ |
3397 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
50c2f753 | 3398 | } else |
ff7feac9 | 3399 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
b6b38f70 | 3400 | /*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/ |
1da177e4 LT |
3401 | return rc; |
3402 | } | |
3403 | ||
3404 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
50c2f753 SF |
3405 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
3406 | const int buflen, const int acl_type) | |
1da177e4 LT |
3407 | { |
3408 | __u16 rc = 0; | |
50c2f753 SF |
3409 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
3410 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
1da177e4 LT |
3411 | int count; |
3412 | int i; | |
3413 | ||
790fe579 | 3414 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4 LT |
3415 | return 0; |
3416 | ||
3417 | count = posix_acl_xattr_count((size_t)buflen); | |
b6b38f70 | 3418 | cFYI(1, "setting acl with %d entries from buf of length %d and " |
63135e08 | 3419 | "version of %d", |
b6b38f70 | 3420 | count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579 | 3421 | if (le32_to_cpu(local_acl->a_version) != 2) { |
b6b38f70 JP |
3422 | cFYI(1, "unknown POSIX ACL version %d", |
3423 | le32_to_cpu(local_acl->a_version)); | |
1da177e4 LT |
3424 | return 0; |
3425 | } | |
3426 | cifs_acl->version = cpu_to_le16(1); | |
790fe579 | 3427 | if (acl_type == ACL_TYPE_ACCESS) |
ff7feac9 | 3428 | cifs_acl->access_entry_count = cpu_to_le16(count); |
790fe579 | 3429 | else if (acl_type == ACL_TYPE_DEFAULT) |
ff7feac9 | 3430 | cifs_acl->default_entry_count = cpu_to_le16(count); |
1da177e4 | 3431 | else { |
b6b38f70 | 3432 | cFYI(1, "unknown ACL type %d", acl_type); |
1da177e4 LT |
3433 | return 0; |
3434 | } | |
50c2f753 | 3435 | for (i = 0; i < count; i++) { |
1da177e4 LT |
3436 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], |
3437 | &local_acl->a_entries[i]); | |
790fe579 | 3438 | if (rc != 0) { |
1da177e4 LT |
3439 | /* ACE not converted */ |
3440 | break; | |
3441 | } | |
3442 | } | |
790fe579 | 3443 | if (rc == 0) { |
1da177e4 LT |
3444 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
3445 | rc += sizeof(struct cifs_posix_acl); | |
3446 | /* BB add check to make sure ACL does not overflow SMB */ | |
3447 | } | |
3448 | return rc; | |
3449 | } | |
3450 | ||
3451 | int | |
96daf2b0 | 3452 | CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3453 | const unsigned char *searchName, |
3454 | char *acl_inf, const int buflen, const int acl_type, | |
3455 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3456 | { |
3457 | /* SMB_QUERY_POSIX_ACL */ | |
3458 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3459 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3460 | int rc = 0; | |
3461 | int bytes_returned; | |
3462 | int name_len; | |
3463 | __u16 params, byte_count; | |
50c2f753 | 3464 | |
b6b38f70 | 3465 | cFYI(1, "In GetPosixACL (Unix) for path %s", searchName); |
1da177e4 LT |
3466 | |
3467 | queryAclRetry: | |
3468 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3469 | (void **) &pSMBr); | |
3470 | if (rc) | |
3471 | return rc; | |
50c2f753 | 3472 | |
1da177e4 LT |
3473 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3474 | name_len = | |
acbbb76a SF |
3475 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3476 | searchName, PATH_MAX, nls_codepage, | |
3477 | remap); | |
1da177e4 LT |
3478 | name_len++; /* trailing null */ |
3479 | name_len *= 2; | |
3480 | pSMB->FileName[name_len] = 0; | |
3481 | pSMB->FileName[name_len+1] = 0; | |
50c2f753 | 3482 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3483 | name_len = strnlen(searchName, PATH_MAX); |
3484 | name_len++; /* trailing null */ | |
3485 | strncpy(pSMB->FileName, searchName, name_len); | |
3486 | } | |
3487 | ||
3488 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3489 | pSMB->TotalDataCount = 0; | |
3490 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
50c2f753 | 3491 | /* BB find exact max data count below from sess structure BB */ |
1da177e4 LT |
3492 | pSMB->MaxDataCount = cpu_to_le16(4000); |
3493 | pSMB->MaxSetupCount = 0; | |
3494 | pSMB->Reserved = 0; | |
3495 | pSMB->Flags = 0; | |
3496 | pSMB->Timeout = 0; | |
3497 | pSMB->Reserved2 = 0; | |
3498 | pSMB->ParameterOffset = cpu_to_le16( | |
50c2f753 SF |
3499 | offsetof(struct smb_com_transaction2_qpi_req, |
3500 | InformationLevel) - 4); | |
1da177e4 LT |
3501 | pSMB->DataCount = 0; |
3502 | pSMB->DataOffset = 0; | |
3503 | pSMB->SetupCount = 1; | |
3504 | pSMB->Reserved3 = 0; | |
3505 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3506 | byte_count = params + 1 /* pad */ ; | |
3507 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3508 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3509 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3510 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3511 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3512 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3513 | ||
3514 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3515 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
0a4b92c0 | 3516 | cifs_stats_inc(&tcon->num_acl_get); |
1da177e4 | 3517 | if (rc) { |
b6b38f70 | 3518 | cFYI(1, "Send error in Query POSIX ACL = %d", rc); |
1da177e4 LT |
3519 | } else { |
3520 | /* decode response */ | |
50c2f753 | 3521 | |
1da177e4 | 3522 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 3523 | /* BB also check enough total bytes returned */ |
820a803f | 3524 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
3525 | rc = -EIO; /* bad smb */ |
3526 | else { | |
3527 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3528 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3529 | rc = cifs_copy_posix_acl(acl_inf, | |
3530 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
50c2f753 | 3531 | buflen, acl_type, count); |
1da177e4 LT |
3532 | } |
3533 | } | |
3534 | cifs_buf_release(pSMB); | |
3535 | if (rc == -EAGAIN) | |
3536 | goto queryAclRetry; | |
3537 | return rc; | |
3538 | } | |
3539 | ||
3540 | int | |
96daf2b0 | 3541 | CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3542 | const unsigned char *fileName, |
3543 | const char *local_acl, const int buflen, | |
3544 | const int acl_type, | |
3545 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
3546 | { |
3547 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3548 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3549 | char *parm_data; | |
3550 | int name_len; | |
3551 | int rc = 0; | |
3552 | int bytes_returned = 0; | |
3553 | __u16 params, byte_count, data_count, param_offset, offset; | |
3554 | ||
b6b38f70 | 3555 | cFYI(1, "In SetPosixACL (Unix) for path %s", fileName); |
1da177e4 LT |
3556 | setAclRetry: |
3557 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 3558 | (void **) &pSMBr); |
1da177e4 LT |
3559 | if (rc) |
3560 | return rc; | |
3561 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3562 | name_len = | |
acbbb76a SF |
3563 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
3564 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3565 | name_len++; /* trailing null */ |
3566 | name_len *= 2; | |
50c2f753 | 3567 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
3568 | name_len = strnlen(fileName, PATH_MAX); |
3569 | name_len++; /* trailing null */ | |
3570 | strncpy(pSMB->FileName, fileName, name_len); | |
3571 | } | |
3572 | params = 6 + name_len; | |
3573 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3574 | /* BB find max SMB size from sess */ |
3575 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
3576 | pSMB->MaxSetupCount = 0; |
3577 | pSMB->Reserved = 0; | |
3578 | pSMB->Flags = 0; | |
3579 | pSMB->Timeout = 0; | |
3580 | pSMB->Reserved2 = 0; | |
3581 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 3582 | InformationLevel) - 4; |
1da177e4 LT |
3583 | offset = param_offset + params; |
3584 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3585 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3586 | ||
3587 | /* convert to on the wire format for POSIX ACL */ | |
50c2f753 | 3588 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4 | 3589 | |
790fe579 | 3590 | if (data_count == 0) { |
1da177e4 LT |
3591 | rc = -EOPNOTSUPP; |
3592 | goto setACLerrorExit; | |
3593 | } | |
3594 | pSMB->DataOffset = cpu_to_le16(offset); | |
3595 | pSMB->SetupCount = 1; | |
3596 | pSMB->Reserved3 = 0; | |
3597 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3598 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3599 | byte_count = 3 /* pad */ + params + data_count; | |
3600 | pSMB->DataCount = cpu_to_le16(data_count); | |
3601 | pSMB->TotalDataCount = pSMB->DataCount; | |
3602 | pSMB->ParameterCount = cpu_to_le16(params); | |
3603 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3604 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3605 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3606 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3607 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3608 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926 | 3609 | if (rc) |
b6b38f70 | 3610 | cFYI(1, "Set POSIX ACL returned %d", rc); |
1da177e4 LT |
3611 | |
3612 | setACLerrorExit: | |
3613 | cifs_buf_release(pSMB); | |
3614 | if (rc == -EAGAIN) | |
3615 | goto setAclRetry; | |
3616 | return rc; | |
3617 | } | |
3618 | ||
f654bac2 SF |
3619 | /* BB fix tabs in this function FIXME BB */ |
3620 | int | |
96daf2b0 | 3621 | CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3622 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3623 | { |
50c2f753 SF |
3624 | int rc = 0; |
3625 | struct smb_t2_qfi_req *pSMB = NULL; | |
3626 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3627 | int bytes_returned; | |
3628 | __u16 params, byte_count; | |
f654bac2 | 3629 | |
b6b38f70 | 3630 | cFYI(1, "In GetExtAttr"); |
790fe579 SF |
3631 | if (tcon == NULL) |
3632 | return -ENODEV; | |
f654bac2 SF |
3633 | |
3634 | GetExtAttrRetry: | |
790fe579 SF |
3635 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
3636 | (void **) &pSMBr); | |
3637 | if (rc) | |
3638 | return rc; | |
f654bac2 | 3639 | |
ad7a2926 | 3640 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3641 | pSMB->t2.TotalDataCount = 0; |
3642 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3643 | /* BB find exact max data count below from sess structure BB */ | |
3644 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3645 | pSMB->t2.MaxSetupCount = 0; | |
3646 | pSMB->t2.Reserved = 0; | |
3647 | pSMB->t2.Flags = 0; | |
3648 | pSMB->t2.Timeout = 0; | |
3649 | pSMB->t2.Reserved2 = 0; | |
3650 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3651 | Fid) - 4); | |
3652 | pSMB->t2.DataCount = 0; | |
3653 | pSMB->t2.DataOffset = 0; | |
3654 | pSMB->t2.SetupCount = 1; | |
3655 | pSMB->t2.Reserved3 = 0; | |
3656 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3657 | byte_count = params + 1 /* pad */ ; | |
3658 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3659 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3660 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3661 | pSMB->Pad = 0; | |
f654bac2 | 3662 | pSMB->Fid = netfid; |
be8e3b00 | 3663 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3664 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3665 | ||
3666 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3667 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3668 | if (rc) { | |
b6b38f70 | 3669 | cFYI(1, "error %d in GetExtAttr", rc); |
790fe579 SF |
3670 | } else { |
3671 | /* decode response */ | |
3672 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3673 | /* BB also check enough total bytes returned */ |
820a803f | 3674 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3675 | /* If rc should we check for EOPNOSUPP and |
3676 | disable the srvino flag? or in caller? */ | |
3677 | rc = -EIO; /* bad smb */ | |
3678 | else { | |
3679 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3680 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3681 | struct file_chattr_info *pfinfo; | |
3682 | /* BB Do we need a cast or hash here ? */ | |
3683 | if (count != 16) { | |
b6b38f70 | 3684 | cFYI(1, "Illegal size ret in GetExtAttr"); |
790fe579 SF |
3685 | rc = -EIO; |
3686 | goto GetExtAttrOut; | |
3687 | } | |
3688 | pfinfo = (struct file_chattr_info *) | |
3689 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3690 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3691 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3692 | } |
3693 | } | |
f654bac2 | 3694 | GetExtAttrOut: |
790fe579 SF |
3695 | cifs_buf_release(pSMB); |
3696 | if (rc == -EAGAIN) | |
3697 | goto GetExtAttrRetry; | |
3698 | return rc; | |
f654bac2 SF |
3699 | } |
3700 | ||
f654bac2 | 3701 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3702 | |
79df1bae JL |
3703 | #ifdef CONFIG_CIFS_ACL |
3704 | /* | |
3705 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3706 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3707 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3708 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3709 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3710 | * by caller | |
3711 | */ | |
3712 | static int | |
3713 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3714 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3715 | void **ret_buf) |
3716 | { | |
3717 | int rc; | |
3718 | __u32 temp_offset; | |
3719 | struct smb_com_ntransact_req *pSMB; | |
3720 | ||
3721 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3722 | (void **)&pSMB); | |
3723 | if (rc) | |
3724 | return rc; | |
3725 | *ret_buf = (void *)pSMB; | |
3726 | pSMB->Reserved = 0; | |
3727 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3728 | pSMB->TotalDataCount = 0; | |
c974befa | 3729 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3730 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3731 | pSMB->DataCount = pSMB->TotalDataCount; | |
3732 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3733 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3734 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3735 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3736 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3737 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3738 | return 0; | |
3739 | } | |
3740 | ||
3741 | static int | |
3742 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3743 | __u32 *pparmlen, __u32 *pdatalen) | |
3744 | { | |
3745 | char *end_of_smb; | |
3746 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3747 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3748 | u16 bcc; |
79df1bae JL |
3749 | |
3750 | *pdatalen = 0; | |
3751 | *pparmlen = 0; | |
3752 | ||
3753 | if (buf == NULL) | |
3754 | return -EINVAL; | |
3755 | ||
3756 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3757 | ||
820a803f JL |
3758 | bcc = get_bcc(&pSMBr->hdr); |
3759 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3760 | (char *)&pSMBr->ByteCount; |
3761 | ||
3762 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3763 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3764 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3765 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3766 | ||
3767 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3768 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3769 | ||
3770 | /* should we also check that parm and data areas do not overlap? */ | |
3771 | if (*ppparm > end_of_smb) { | |
3772 | cFYI(1, "parms start after end of smb"); | |
3773 | return -EINVAL; | |
3774 | } else if (parm_count + *ppparm > end_of_smb) { | |
3775 | cFYI(1, "parm end after end of smb"); | |
3776 | return -EINVAL; | |
3777 | } else if (*ppdata > end_of_smb) { | |
3778 | cFYI(1, "data starts after end of smb"); | |
3779 | return -EINVAL; | |
3780 | } else if (data_count + *ppdata > end_of_smb) { | |
3781 | cFYI(1, "data %p + count %d (%p) past smb end %p start %p", | |
3782 | *ppdata, data_count, (data_count + *ppdata), | |
3783 | end_of_smb, pSMBr); | |
3784 | return -EINVAL; | |
820a803f | 3785 | } else if (parm_count + data_count > bcc) { |
79df1bae JL |
3786 | cFYI(1, "parm count and data count larger than SMB"); |
3787 | return -EINVAL; | |
3788 | } | |
3789 | *pdatalen = data_count; | |
3790 | *pparmlen = parm_count; | |
3791 | return 0; | |
3792 | } | |
3793 | ||
0a4b92c0 SF |
3794 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3795 | int | |
96daf2b0 | 3796 | CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3797 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3798 | { |
3799 | int rc = 0; | |
3800 | int buf_type = 0; | |
ad7a2926 | 3801 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 SF |
3802 | struct kvec iov[1]; |
3803 | ||
b6b38f70 | 3804 | cFYI(1, "GetCifsACL"); |
0a4b92c0 | 3805 | |
630f3f0c SF |
3806 | *pbuflen = 0; |
3807 | *acl_inf = NULL; | |
3808 | ||
b9c7a2bb | 3809 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3810 | 8 /* parm len */, tcon, (void **) &pSMB); |
3811 | if (rc) | |
3812 | return rc; | |
3813 | ||
3814 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3815 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3816 | pSMB->MaxSetupCount = 0; | |
3817 | pSMB->Fid = fid; /* file handle always le */ | |
3818 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3819 | CIFS_ACL_DACL); | |
3820 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3821 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3822 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3823 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3824 | |
a761ac57 | 3825 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981e | 3826 | 0); |
0a4b92c0 SF |
3827 | cifs_stats_inc(&tcon->num_acl_get); |
3828 | if (rc) { | |
b6b38f70 | 3829 | cFYI(1, "Send error in QuerySecDesc = %d", rc); |
0a4b92c0 | 3830 | } else { /* decode response */ |
ad7a2926 | 3831 | __le32 *parm; |
630f3f0c SF |
3832 | __u32 parm_len; |
3833 | __u32 acl_len; | |
50c2f753 | 3834 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3835 | char *pdata; |
0a4b92c0 SF |
3836 | |
3837 | /* validate_nttransact */ | |
50c2f753 | 3838 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c | 3839 | &pdata, &parm_len, pbuflen); |
790fe579 | 3840 | if (rc) |
0a4b92c0 SF |
3841 | goto qsec_out; |
3842 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3843 | ||
b6b38f70 | 3844 | cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf); |
0a4b92c0 SF |
3845 | |
3846 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3847 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3848 | *pbuflen = 0; |
0a4b92c0 SF |
3849 | goto qsec_out; |
3850 | } | |
3851 | ||
3852 | /* BB check that data area is minimum length and as big as acl_len */ | |
3853 | ||
af6f4612 | 3854 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3855 | if (acl_len != *pbuflen) { |
b6b38f70 JP |
3856 | cERROR(1, "acl length %d does not match %d", |
3857 | acl_len, *pbuflen); | |
630f3f0c SF |
3858 | if (*pbuflen > acl_len) |
3859 | *pbuflen = acl_len; | |
3860 | } | |
0a4b92c0 | 3861 | |
630f3f0c SF |
3862 | /* check if buffer is big enough for the acl |
3863 | header followed by the smallest SID */ | |
3864 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3865 | (*pbuflen >= 64 * 1024)) { | |
b6b38f70 | 3866 | cERROR(1, "bad acl length %d", *pbuflen); |
630f3f0c SF |
3867 | rc = -EINVAL; |
3868 | *pbuflen = 0; | |
3869 | } else { | |
3870 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3871 | if (*acl_inf == NULL) { | |
3872 | *pbuflen = 0; | |
3873 | rc = -ENOMEM; | |
3874 | } | |
3875 | memcpy(*acl_inf, pdata, *pbuflen); | |
3876 | } | |
0a4b92c0 SF |
3877 | } |
3878 | qsec_out: | |
790fe579 | 3879 | if (buf_type == CIFS_SMALL_BUFFER) |
0a4b92c0 | 3880 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 3881 | else if (buf_type == CIFS_LARGE_BUFFER) |
0a4b92c0 | 3882 | cifs_buf_release(iov[0].iov_base); |
4b8f930f | 3883 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c0 SF |
3884 | return rc; |
3885 | } | |
97837582 SF |
3886 | |
3887 | int | |
96daf2b0 | 3888 | CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3889 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3890 | { |
3891 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3892 | int rc = 0; | |
3893 | int bytes_returned = 0; | |
3894 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3895 | void *pSMBr; |
97837582 SF |
3896 | |
3897 | setCifsAclRetry: | |
b2a3ad9c | 3898 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3899 | if (rc) |
b2a3ad9c | 3900 | return rc; |
97837582 SF |
3901 | |
3902 | pSMB->MaxSetupCount = 0; | |
3903 | pSMB->Reserved = 0; | |
3904 | ||
3905 | param_count = 8; | |
3906 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3907 | data_count = acllen; | |
3908 | data_offset = param_offset + param_count; | |
3909 | byte_count = 3 /* pad */ + param_count; | |
3910 | ||
3911 | pSMB->DataCount = cpu_to_le32(data_count); | |
3912 | pSMB->TotalDataCount = pSMB->DataCount; | |
3913 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3914 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3915 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3916 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3917 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3918 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3919 | pSMB->SetupCount = 0; | |
3920 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3921 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3922 | ||
3923 | pSMB->Fid = fid; /* file handle always le */ | |
3924 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3925 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3926 | |
3927 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3928 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3929 | data_offset, pntsd, acllen); | |
be8e3b00 | 3930 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3931 | } else |
be8e3b00 | 3932 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3933 | |
3934 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3935 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3936 | ||
b6b38f70 | 3937 | cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc); |
97837582 | 3938 | if (rc) |
b6b38f70 | 3939 | cFYI(1, "Set CIFS ACL returned %d", rc); |
97837582 SF |
3940 | cifs_buf_release(pSMB); |
3941 | ||
3942 | if (rc == -EAGAIN) | |
3943 | goto setCifsAclRetry; | |
3944 | ||
3945 | return (rc); | |
3946 | } | |
3947 | ||
79df1bae | 3948 | #endif /* CONFIG_CIFS_ACL */ |
0a4b92c0 | 3949 | |
6b8edfe0 SF |
3950 | /* Legacy Query Path Information call for lookup to old servers such |
3951 | as Win9x/WinME */ | |
96daf2b0 | 3952 | int SMBQueryInformation(const int xid, struct cifs_tcon *tcon, |
50c2f753 SF |
3953 | const unsigned char *searchName, |
3954 | FILE_ALL_INFO *pFinfo, | |
3955 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3956 | { |
ad7a2926 SF |
3957 | QUERY_INFORMATION_REQ *pSMB; |
3958 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3959 | int rc = 0; |
3960 | int bytes_returned; | |
3961 | int name_len; | |
3962 | ||
b6b38f70 | 3963 | cFYI(1, "In SMBQPath path %s", searchName); |
6b8edfe0 SF |
3964 | QInfRetry: |
3965 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3966 | (void **) &pSMBr); |
6b8edfe0 SF |
3967 | if (rc) |
3968 | return rc; | |
3969 | ||
3970 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3971 | name_len = | |
acbbb76a SF |
3972 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
3973 | searchName, PATH_MAX, nls_codepage, | |
3974 | remap); | |
6b8edfe0 SF |
3975 | name_len++; /* trailing null */ |
3976 | name_len *= 2; | |
50c2f753 | 3977 | } else { |
6b8edfe0 SF |
3978 | name_len = strnlen(searchName, PATH_MAX); |
3979 | name_len++; /* trailing null */ | |
3980 | strncpy(pSMB->FileName, searchName, name_len); | |
3981 | } | |
3982 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3983 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3984 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3985 | pSMB->ByteCount = cpu_to_le16(name_len); |
3986 | ||
3987 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3988 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3989 | if (rc) { |
b6b38f70 | 3990 | cFYI(1, "Send error in QueryInfo = %d", rc); |
ad7a2926 | 3991 | } else if (pFinfo) { |
1bd5bbcb SF |
3992 | struct timespec ts; |
3993 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
ad7a2926 SF |
3994 | |
3995 | /* decode response */ | |
1bd5bbcb | 3996 | /* BB FIXME - add time zone adjustment BB */ |
6b8edfe0 | 3997 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3998 | ts.tv_nsec = 0; |
3999 | ts.tv_sec = time; | |
4000 | /* decode time fields */ | |
733f99ac | 4001 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
1bd5bbcb SF |
4002 | pFinfo->LastWriteTime = pFinfo->ChangeTime; |
4003 | pFinfo->LastAccessTime = 0; | |
70ca734a SF |
4004 | pFinfo->AllocationSize = |
4005 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
4006 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
4007 | pFinfo->Attributes = | |
4008 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
6b8edfe0 SF |
4009 | } else |
4010 | rc = -EIO; /* bad buffer passed in */ | |
4011 | ||
4012 | cifs_buf_release(pSMB); | |
4013 | ||
4014 | if (rc == -EAGAIN) | |
4015 | goto QInfRetry; | |
4016 | ||
4017 | return rc; | |
4018 | } | |
4019 | ||
bcd5357f | 4020 | int |
96daf2b0 | 4021 | CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
4022 | u16 netfid, FILE_ALL_INFO *pFindData) |
4023 | { | |
4024 | struct smb_t2_qfi_req *pSMB = NULL; | |
4025 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4026 | int rc = 0; | |
4027 | int bytes_returned; | |
4028 | __u16 params, byte_count; | |
4029 | ||
4030 | QFileInfoRetry: | |
4031 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4032 | (void **) &pSMBr); | |
4033 | if (rc) | |
4034 | return rc; | |
4035 | ||
4036 | params = 2 /* level */ + 2 /* fid */; | |
4037 | pSMB->t2.TotalDataCount = 0; | |
4038 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4039 | /* BB find exact max data count below from sess structure BB */ | |
4040 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4041 | pSMB->t2.MaxSetupCount = 0; | |
4042 | pSMB->t2.Reserved = 0; | |
4043 | pSMB->t2.Flags = 0; | |
4044 | pSMB->t2.Timeout = 0; | |
4045 | pSMB->t2.Reserved2 = 0; | |
4046 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4047 | Fid) - 4); | |
4048 | pSMB->t2.DataCount = 0; | |
4049 | pSMB->t2.DataOffset = 0; | |
4050 | pSMB->t2.SetupCount = 1; | |
4051 | pSMB->t2.Reserved3 = 0; | |
4052 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4053 | byte_count = params + 1 /* pad */ ; | |
4054 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4055 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4056 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
4057 | pSMB->Pad = 0; | |
4058 | pSMB->Fid = netfid; | |
be8e3b00 | 4059 | inc_rfc1001_len(pSMB, byte_count); |
6b8edfe0 | 4060 | |
bcd5357f JL |
4061 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4062 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4063 | if (rc) { | |
f19159dc | 4064 | cFYI(1, "Send error in QPathInfo = %d", rc); |
bcd5357f JL |
4065 | } else { /* decode response */ |
4066 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 4067 | |
bcd5357f JL |
4068 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4069 | rc = -EIO; | |
820a803f | 4070 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
4071 | rc = -EIO; /* bad smb */ |
4072 | else if (pFindData) { | |
4073 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4074 | memcpy((char *) pFindData, | |
4075 | (char *) &pSMBr->hdr.Protocol + | |
4076 | data_offset, sizeof(FILE_ALL_INFO)); | |
4077 | } else | |
4078 | rc = -ENOMEM; | |
4079 | } | |
4080 | cifs_buf_release(pSMB); | |
4081 | if (rc == -EAGAIN) | |
4082 | goto QFileInfoRetry; | |
6b8edfe0 | 4083 | |
bcd5357f JL |
4084 | return rc; |
4085 | } | |
6b8edfe0 | 4086 | |
1da177e4 | 4087 | int |
96daf2b0 | 4088 | CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 4089 | const unsigned char *searchName, |
ad7a2926 | 4090 | FILE_ALL_INFO *pFindData, |
acf1a1b1 | 4091 | int legacy /* old style infolevel */, |
737b758c | 4092 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4093 | { |
4094 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
4095 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4096 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4097 | int rc = 0; | |
4098 | int bytes_returned; | |
4099 | int name_len; | |
4100 | __u16 params, byte_count; | |
4101 | ||
b6b38f70 | 4102 | /* cFYI(1, "In QPathInfo path %s", searchName); */ |
1da177e4 LT |
4103 | QPathInfoRetry: |
4104 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4105 | (void **) &pSMBr); | |
4106 | if (rc) | |
4107 | return rc; | |
4108 | ||
4109 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4110 | name_len = | |
acbbb76a SF |
4111 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4112 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4113 | name_len++; /* trailing null */ |
4114 | name_len *= 2; | |
50c2f753 | 4115 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4116 | name_len = strnlen(searchName, PATH_MAX); |
4117 | name_len++; /* trailing null */ | |
4118 | strncpy(pSMB->FileName, searchName, name_len); | |
4119 | } | |
4120 | ||
50c2f753 | 4121 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4122 | pSMB->TotalDataCount = 0; |
4123 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4124 | /* BB find exact max SMB PDU from sess structure BB */ |
4125 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4126 | pSMB->MaxSetupCount = 0; |
4127 | pSMB->Reserved = 0; | |
4128 | pSMB->Flags = 0; | |
4129 | pSMB->Timeout = 0; | |
4130 | pSMB->Reserved2 = 0; | |
4131 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4132 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4133 | pSMB->DataCount = 0; |
4134 | pSMB->DataOffset = 0; | |
4135 | pSMB->SetupCount = 1; | |
4136 | pSMB->Reserved3 = 0; | |
4137 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4138 | byte_count = params + 1 /* pad */ ; | |
4139 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4140 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 4141 | if (legacy) |
acf1a1b1 SF |
4142 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
4143 | else | |
4144 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 4145 | pSMB->Reserved4 = 0; |
be8e3b00 | 4146 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4147 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4148 | ||
4149 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4150 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4151 | if (rc) { | |
b6b38f70 | 4152 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4153 | } else { /* decode response */ |
4154 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4155 | ||
acf1a1b1 SF |
4156 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
4157 | rc = -EIO; | |
820a803f | 4158 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 4159 | rc = -EIO; /* bad smb */ |
820a803f | 4160 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
4161 | rc = -EIO; /* 24 or 26 expected but we do not read |
4162 | last field */ | |
4163 | else if (pFindData) { | |
acf1a1b1 | 4164 | int size; |
1da177e4 | 4165 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 SF |
4166 | |
4167 | /* On legacy responses we do not read the last field, | |
4168 | EAsize, fortunately since it varies by subdialect and | |
4169 | also note it differs on Set vs. Get, ie two bytes or 4 | |
4170 | bytes depending but we don't care here */ | |
4171 | if (legacy) | |
acf1a1b1 SF |
4172 | size = sizeof(FILE_INFO_STANDARD); |
4173 | else | |
4174 | size = sizeof(FILE_ALL_INFO); | |
1da177e4 LT |
4175 | memcpy((char *) pFindData, |
4176 | (char *) &pSMBr->hdr.Protocol + | |
acf1a1b1 | 4177 | data_offset, size); |
1da177e4 LT |
4178 | } else |
4179 | rc = -ENOMEM; | |
4180 | } | |
4181 | cifs_buf_release(pSMB); | |
4182 | if (rc == -EAGAIN) | |
4183 | goto QPathInfoRetry; | |
4184 | ||
4185 | return rc; | |
4186 | } | |
4187 | ||
c8634fd3 | 4188 | int |
96daf2b0 | 4189 | CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
4190 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
4191 | { | |
4192 | struct smb_t2_qfi_req *pSMB = NULL; | |
4193 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
4194 | int rc = 0; | |
4195 | int bytes_returned; | |
4196 | __u16 params, byte_count; | |
4197 | ||
4198 | UnixQFileInfoRetry: | |
4199 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4200 | (void **) &pSMBr); | |
4201 | if (rc) | |
4202 | return rc; | |
4203 | ||
4204 | params = 2 /* level */ + 2 /* fid */; | |
4205 | pSMB->t2.TotalDataCount = 0; | |
4206 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
4207 | /* BB find exact max data count below from sess structure BB */ | |
4208 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
4209 | pSMB->t2.MaxSetupCount = 0; | |
4210 | pSMB->t2.Reserved = 0; | |
4211 | pSMB->t2.Flags = 0; | |
4212 | pSMB->t2.Timeout = 0; | |
4213 | pSMB->t2.Reserved2 = 0; | |
4214 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
4215 | Fid) - 4); | |
4216 | pSMB->t2.DataCount = 0; | |
4217 | pSMB->t2.DataOffset = 0; | |
4218 | pSMB->t2.SetupCount = 1; | |
4219 | pSMB->t2.Reserved3 = 0; | |
4220 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
4221 | byte_count = params + 1 /* pad */ ; | |
4222 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
4223 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
4224 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4225 | pSMB->Pad = 0; | |
4226 | pSMB->Fid = netfid; | |
be8e3b00 | 4227 | inc_rfc1001_len(pSMB, byte_count); |
c8634fd3 JL |
4228 | |
4229 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4230 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4231 | if (rc) { | |
f19159dc | 4232 | cFYI(1, "Send error in QPathInfo = %d", rc); |
c8634fd3 JL |
4233 | } else { /* decode response */ |
4234 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4235 | ||
820a803f | 4236 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f19159dc | 4237 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
c8634fd3 | 4238 | "Unix Extensions can be disabled on mount " |
f19159dc | 4239 | "by specifying the nosfu mount option."); |
c8634fd3 JL |
4240 | rc = -EIO; /* bad smb */ |
4241 | } else { | |
4242 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4243 | memcpy((char *) pFindData, | |
4244 | (char *) &pSMBr->hdr.Protocol + | |
4245 | data_offset, | |
4246 | sizeof(FILE_UNIX_BASIC_INFO)); | |
4247 | } | |
4248 | } | |
4249 | ||
4250 | cifs_buf_release(pSMB); | |
4251 | if (rc == -EAGAIN) | |
4252 | goto UnixQFileInfoRetry; | |
4253 | ||
4254 | return rc; | |
4255 | } | |
4256 | ||
1da177e4 | 4257 | int |
96daf2b0 | 4258 | CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon, |
1da177e4 | 4259 | const unsigned char *searchName, |
582d21e5 | 4260 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 4261 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4262 | { |
4263 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
4264 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4265 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4266 | int rc = 0; | |
4267 | int bytes_returned = 0; | |
4268 | int name_len; | |
4269 | __u16 params, byte_count; | |
4270 | ||
b6b38f70 | 4271 | cFYI(1, "In QPathInfo (Unix) the path %s", searchName); |
1da177e4 LT |
4272 | UnixQPathInfoRetry: |
4273 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4274 | (void **) &pSMBr); | |
4275 | if (rc) | |
4276 | return rc; | |
4277 | ||
4278 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4279 | name_len = | |
acbbb76a SF |
4280 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4281 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
4282 | name_len++; /* trailing null */ |
4283 | name_len *= 2; | |
50c2f753 | 4284 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4285 | name_len = strnlen(searchName, PATH_MAX); |
4286 | name_len++; /* trailing null */ | |
4287 | strncpy(pSMB->FileName, searchName, name_len); | |
4288 | } | |
4289 | ||
50c2f753 | 4290 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
4291 | pSMB->TotalDataCount = 0; |
4292 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4293 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 4294 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
4295 | pSMB->MaxSetupCount = 0; |
4296 | pSMB->Reserved = 0; | |
4297 | pSMB->Flags = 0; | |
4298 | pSMB->Timeout = 0; | |
4299 | pSMB->Reserved2 = 0; | |
4300 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4301 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4302 | pSMB->DataCount = 0; |
4303 | pSMB->DataOffset = 0; | |
4304 | pSMB->SetupCount = 1; | |
4305 | pSMB->Reserved3 = 0; | |
4306 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4307 | byte_count = params + 1 /* pad */ ; | |
4308 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4309 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4310 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
4311 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4312 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4313 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4314 | ||
4315 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4316 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4317 | if (rc) { | |
b6b38f70 | 4318 | cFYI(1, "Send error in QPathInfo = %d", rc); |
1da177e4 LT |
4319 | } else { /* decode response */ |
4320 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4321 | ||
820a803f | 4322 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
b6b38f70 | 4323 | cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n" |
1e71f25d | 4324 | "Unix Extensions can be disabled on mount " |
b6b38f70 | 4325 | "by specifying the nosfu mount option."); |
1da177e4 LT |
4326 | rc = -EIO; /* bad smb */ |
4327 | } else { | |
4328 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4329 | memcpy((char *) pFindData, | |
4330 | (char *) &pSMBr->hdr.Protocol + | |
4331 | data_offset, | |
630f3f0c | 4332 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
4333 | } |
4334 | } | |
4335 | cifs_buf_release(pSMB); | |
4336 | if (rc == -EAGAIN) | |
4337 | goto UnixQPathInfoRetry; | |
4338 | ||
4339 | return rc; | |
4340 | } | |
4341 | ||
1da177e4 LT |
4342 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
4343 | int | |
96daf2b0 | 4344 | CIFSFindFirst(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4345 | const char *searchName, |
1da177e4 | 4346 | const struct nls_table *nls_codepage, |
50c2f753 SF |
4347 | __u16 *pnetfid, |
4348 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
1da177e4 LT |
4349 | { |
4350 | /* level 257 SMB_ */ | |
4351 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
4352 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 4353 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
4354 | int rc = 0; |
4355 | int bytes_returned = 0; | |
4356 | int name_len; | |
4357 | __u16 params, byte_count; | |
4358 | ||
b6b38f70 | 4359 | cFYI(1, "In FindFirst for %s", searchName); |
1da177e4 LT |
4360 | |
4361 | findFirstRetry: | |
4362 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4363 | (void **) &pSMBr); | |
4364 | if (rc) | |
4365 | return rc; | |
4366 | ||
4367 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4368 | name_len = | |
acbbb76a SF |
4369 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
4370 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
4371 | /* We can not add the asterik earlier in case |
4372 | it got remapped to 0xF03A as if it were part of the | |
4373 | directory name instead of a wildcard */ | |
1da177e4 | 4374 | name_len *= 2; |
ac67055e | 4375 | pSMB->FileName[name_len] = dirsep; |
737b758c SF |
4376 | pSMB->FileName[name_len+1] = 0; |
4377 | pSMB->FileName[name_len+2] = '*'; | |
4378 | pSMB->FileName[name_len+3] = 0; | |
4379 | name_len += 4; /* now the trailing null */ | |
1da177e4 LT |
4380 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ |
4381 | pSMB->FileName[name_len+1] = 0; | |
737b758c | 4382 | name_len += 2; |
1da177e4 LT |
4383 | } else { /* BB add check for overrun of SMB buf BB */ |
4384 | name_len = strnlen(searchName, PATH_MAX); | |
1da177e4 | 4385 | /* BB fix here and in unicode clause above ie |
790fe579 | 4386 | if (name_len > buffersize-header) |
1da177e4 LT |
4387 | free buffer exit; BB */ |
4388 | strncpy(pSMB->FileName, searchName, name_len); | |
ac67055e | 4389 | pSMB->FileName[name_len] = dirsep; |
68575476 SF |
4390 | pSMB->FileName[name_len+1] = '*'; |
4391 | pSMB->FileName[name_len+2] = 0; | |
4392 | name_len += 3; | |
1da177e4 LT |
4393 | } |
4394 | ||
4395 | params = 12 + name_len /* includes null */ ; | |
4396 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4397 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4398 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4399 | pSMB->MaxSetupCount = 0; |
4400 | pSMB->Reserved = 0; | |
4401 | pSMB->Flags = 0; | |
4402 | pSMB->Timeout = 0; | |
4403 | pSMB->Reserved2 = 0; | |
4404 | byte_count = params + 1 /* pad */ ; | |
4405 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4406 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4407 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4408 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4409 | - 4); | |
1da177e4 LT |
4410 | pSMB->DataCount = 0; |
4411 | pSMB->DataOffset = 0; | |
4412 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4413 | pSMB->Reserved3 = 0; | |
4414 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4415 | pSMB->SearchAttributes = | |
4416 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4417 | ATTR_DIRECTORY); | |
50c2f753 SF |
4418 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
4419 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
1da177e4 LT |
4420 | CIFS_SEARCH_RETURN_RESUME); |
4421 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
4422 | ||
4423 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4424 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4425 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4426 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4427 | ||
4428 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4429 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4430 | cifs_stats_inc(&tcon->num_ffirst); |
1da177e4 | 4431 | |
88274815 SF |
4432 | if (rc) {/* BB add logic to retry regular search if Unix search |
4433 | rejected unexpectedly by server */ | |
1da177e4 | 4434 | /* BB Add code to handle unsupported level rc */ |
b6b38f70 | 4435 | cFYI(1, "Error in FindFirst = %d", rc); |
1982c344 | 4436 | |
88274815 | 4437 | cifs_buf_release(pSMB); |
1da177e4 LT |
4438 | |
4439 | /* BB eventually could optimize out free and realloc of buf */ | |
4440 | /* for this case */ | |
4441 | if (rc == -EAGAIN) | |
4442 | goto findFirstRetry; | |
4443 | } else { /* decode response */ | |
4444 | /* BB remember to free buffer if error BB */ | |
4445 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4446 | if (rc == 0) { |
b77d753c SF |
4447 | unsigned int lnoff; |
4448 | ||
1da177e4 | 4449 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4450 | psrch_inf->unicode = true; |
1da177e4 | 4451 | else |
4b18f2a9 | 4452 | psrch_inf->unicode = false; |
1da177e4 LT |
4453 | |
4454 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
d47d7c1a | 4455 | psrch_inf->smallBuf = 0; |
50c2f753 SF |
4456 | psrch_inf->srch_entries_start = |
4457 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4458 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4459 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4460 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4461 | ||
790fe579 | 4462 | if (parms->EndofSearch) |
4b18f2a9 | 4463 | psrch_inf->endOfSearch = true; |
1da177e4 | 4464 | else |
4b18f2a9 | 4465 | psrch_inf->endOfSearch = false; |
1da177e4 | 4466 | |
50c2f753 SF |
4467 | psrch_inf->entries_in_buffer = |
4468 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4469 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4470 | psrch_inf->entries_in_buffer; |
b77d753c | 4471 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4472 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4473 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4474 | psrch_inf->last_entry = NULL; |
4475 | return rc; | |
4476 | } | |
4477 | ||
0752f152 | 4478 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4479 | lnoff; |
4480 | ||
1da177e4 LT |
4481 | *pnetfid = parms->SearchHandle; |
4482 | } else { | |
4483 | cifs_buf_release(pSMB); | |
4484 | } | |
4485 | } | |
4486 | ||
4487 | return rc; | |
4488 | } | |
4489 | ||
96daf2b0 | 4490 | int CIFSFindNext(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4491 | __u16 searchHandle, struct cifs_search_info *psrch_inf) |
1da177e4 LT |
4492 | { |
4493 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4494 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4495 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4496 | char *response_data; |
4497 | int rc = 0; | |
9438fabb JL |
4498 | int bytes_returned; |
4499 | unsigned int name_len; | |
1da177e4 LT |
4500 | __u16 params, byte_count; |
4501 | ||
b6b38f70 | 4502 | cFYI(1, "In FindNext"); |
1da177e4 | 4503 | |
4b18f2a9 | 4504 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4505 | return -ENOENT; |
4506 | ||
4507 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4508 | (void **) &pSMBr); | |
4509 | if (rc) | |
4510 | return rc; | |
4511 | ||
50c2f753 | 4512 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4513 | byte_count = 0; |
4514 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4515 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4516 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4517 | pSMB->MaxSetupCount = 0; |
4518 | pSMB->Reserved = 0; | |
4519 | pSMB->Flags = 0; | |
4520 | pSMB->Timeout = 0; | |
4521 | pSMB->Reserved2 = 0; | |
4522 | pSMB->ParameterOffset = cpu_to_le16( | |
4523 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4524 | pSMB->DataCount = 0; | |
4525 | pSMB->DataOffset = 0; | |
4526 | pSMB->SetupCount = 1; | |
4527 | pSMB->Reserved3 = 0; | |
4528 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4529 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4530 | pSMB->SearchCount = | |
630f3f0c | 4531 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4532 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4533 | pSMB->ResumeKey = psrch_inf->resume_key; | |
4534 | pSMB->SearchFlags = | |
4535 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
4536 | ||
4537 | name_len = psrch_inf->resume_name_len; | |
4538 | params += name_len; | |
790fe579 | 4539 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4540 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4541 | byte_count += name_len; | |
ef6724e3 SF |
4542 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4543 | pSMB->ResumeFileName[name_len] = 0; | |
4544 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4545 | } else { |
4546 | rc = -EINVAL; | |
4547 | goto FNext2_err_exit; | |
4548 | } | |
4549 | byte_count = params + 1 /* pad */ ; | |
4550 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4551 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4552 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4553 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4554 | |
1da177e4 LT |
4555 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4556 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
a4544347 | 4557 | cifs_stats_inc(&tcon->num_fnext); |
1da177e4 LT |
4558 | if (rc) { |
4559 | if (rc == -EBADF) { | |
4b18f2a9 | 4560 | psrch_inf->endOfSearch = true; |
6353450a | 4561 | cifs_buf_release(pSMB); |
50c2f753 | 4562 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4563 | } else |
b6b38f70 | 4564 | cFYI(1, "FindNext returned = %d", rc); |
1da177e4 LT |
4565 | } else { /* decode response */ |
4566 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4567 | |
790fe579 | 4568 | if (rc == 0) { |
b77d753c SF |
4569 | unsigned int lnoff; |
4570 | ||
1da177e4 LT |
4571 | /* BB fixme add lock for file (srch_info) struct here */ |
4572 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4573 | psrch_inf->unicode = true; |
1da177e4 | 4574 | else |
4b18f2a9 | 4575 | psrch_inf->unicode = false; |
1da177e4 LT |
4576 | response_data = (char *) &pSMBr->hdr.Protocol + |
4577 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4578 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4579 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4580 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4581 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4582 | cifs_small_buf_release( |
4583 | psrch_inf->ntwrk_buf_start); | |
4584 | else | |
4585 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4586 | psrch_inf->srch_entries_start = response_data; |
4587 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
d47d7c1a | 4588 | psrch_inf->smallBuf = 0; |
790fe579 | 4589 | if (parms->EndofSearch) |
4b18f2a9 | 4590 | psrch_inf->endOfSearch = true; |
1da177e4 | 4591 | else |
4b18f2a9 | 4592 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4593 | psrch_inf->entries_in_buffer = |
4594 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4595 | psrch_inf->index_of_last_entry += |
4596 | psrch_inf->entries_in_buffer; | |
b77d753c | 4597 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4598 | if (CIFSMaxBufSize < lnoff) { |
b6b38f70 | 4599 | cERROR(1, "ignoring corrupt resume name"); |
b77d753c SF |
4600 | psrch_inf->last_entry = NULL; |
4601 | return rc; | |
4602 | } else | |
4603 | psrch_inf->last_entry = | |
4604 | psrch_inf->srch_entries_start + lnoff; | |
4605 | ||
b6b38f70 JP |
4606 | /* cFYI(1, "fnxt2 entries in buf %d index_of_last %d", |
4607 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4608 | |
4609 | /* BB fixme add unlock here */ | |
4610 | } | |
4611 | ||
4612 | } | |
4613 | ||
4614 | /* BB On error, should we leave previous search buf (and count and | |
4615 | last entry fields) intact or free the previous one? */ | |
4616 | ||
4617 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4618 | since file handle passed in no longer valid */ | |
4619 | FNext2_err_exit: | |
4620 | if (rc != 0) | |
4621 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4622 | return rc; |
4623 | } | |
4624 | ||
4625 | int | |
96daf2b0 | 4626 | CIFSFindClose(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4627 | const __u16 searchHandle) |
1da177e4 LT |
4628 | { |
4629 | int rc = 0; | |
4630 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4631 | |
b6b38f70 | 4632 | cFYI(1, "In CIFSSMBFindClose"); |
1da177e4 LT |
4633 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4634 | ||
4635 | /* no sense returning error if session restarted | |
4636 | as file handle has been closed */ | |
790fe579 | 4637 | if (rc == -EAGAIN) |
1da177e4 LT |
4638 | return 0; |
4639 | if (rc) | |
4640 | return rc; | |
4641 | ||
1da177e4 LT |
4642 | pSMB->FileID = searchHandle; |
4643 | pSMB->ByteCount = 0; | |
792af7b0 | 4644 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 4645 | if (rc) |
b6b38f70 | 4646 | cERROR(1, "Send error in FindClose = %d", rc); |
ad7a2926 | 4647 | |
a4544347 | 4648 | cifs_stats_inc(&tcon->num_fclose); |
1da177e4 LT |
4649 | |
4650 | /* Since session is dead, search handle closed on server already */ | |
4651 | if (rc == -EAGAIN) | |
4652 | rc = 0; | |
4653 | ||
4654 | return rc; | |
4655 | } | |
4656 | ||
1da177e4 | 4657 | int |
96daf2b0 | 4658 | CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon, |
50c2f753 | 4659 | const unsigned char *searchName, |
ad7a2926 | 4660 | __u64 *inode_number, |
50c2f753 | 4661 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4662 | { |
4663 | int rc = 0; | |
4664 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4665 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4666 | int name_len, bytes_returned; | |
4667 | __u16 params, byte_count; | |
4668 | ||
b6b38f70 | 4669 | cFYI(1, "In GetSrvInodeNum for %s", searchName); |
790fe579 | 4670 | if (tcon == NULL) |
50c2f753 | 4671 | return -ENODEV; |
1da177e4 LT |
4672 | |
4673 | GetInodeNumberRetry: | |
4674 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4675 | (void **) &pSMBr); |
1da177e4 LT |
4676 | if (rc) |
4677 | return rc; | |
4678 | ||
1da177e4 LT |
4679 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4680 | name_len = | |
acbbb76a SF |
4681 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
4682 | searchName, PATH_MAX, nls_codepage, | |
4683 | remap); | |
1da177e4 LT |
4684 | name_len++; /* trailing null */ |
4685 | name_len *= 2; | |
50c2f753 | 4686 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4687 | name_len = strnlen(searchName, PATH_MAX); |
4688 | name_len++; /* trailing null */ | |
4689 | strncpy(pSMB->FileName, searchName, name_len); | |
4690 | } | |
4691 | ||
4692 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4693 | pSMB->TotalDataCount = 0; | |
4694 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4695 | /* BB find exact max data count below from sess structure BB */ | |
4696 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4697 | pSMB->MaxSetupCount = 0; | |
4698 | pSMB->Reserved = 0; | |
4699 | pSMB->Flags = 0; | |
4700 | pSMB->Timeout = 0; | |
4701 | pSMB->Reserved2 = 0; | |
4702 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4703 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4704 | pSMB->DataCount = 0; |
4705 | pSMB->DataOffset = 0; | |
4706 | pSMB->SetupCount = 1; | |
4707 | pSMB->Reserved3 = 0; | |
4708 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4709 | byte_count = params + 1 /* pad */ ; | |
4710 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4711 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4712 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4713 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4714 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4715 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4716 | ||
4717 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4718 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4719 | if (rc) { | |
b6b38f70 | 4720 | cFYI(1, "error %d in QueryInternalInfo", rc); |
1da177e4 LT |
4721 | } else { |
4722 | /* decode response */ | |
4723 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4724 | /* BB also check enough total bytes returned */ |
820a803f | 4725 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4726 | /* If rc should we check for EOPNOSUPP and |
4727 | disable the srvino flag? or in caller? */ | |
4728 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4729 | else { |
1da177e4 LT |
4730 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4731 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4732 | struct file_internal_info *pfinfo; |
1da177e4 | 4733 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4734 | if (count < 8) { |
b6b38f70 | 4735 | cFYI(1, "Illegal size ret in QryIntrnlInf"); |
1da177e4 LT |
4736 | rc = -EIO; |
4737 | goto GetInodeNumOut; | |
4738 | } | |
4739 | pfinfo = (struct file_internal_info *) | |
4740 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4741 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4742 | } |
4743 | } | |
4744 | GetInodeNumOut: | |
4745 | cifs_buf_release(pSMB); | |
4746 | if (rc == -EAGAIN) | |
4747 | goto GetInodeNumberRetry; | |
4748 | return rc; | |
4749 | } | |
1da177e4 | 4750 | |
fec4585f IM |
4751 | /* parses DFS refferal V3 structure |
4752 | * caller is responsible for freeing target_nodes | |
4753 | * returns: | |
4754 | * on success - 0 | |
4755 | * on failure - errno | |
4756 | */ | |
4757 | static int | |
a1fe78f1 | 4758 | parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585f IM |
4759 | unsigned int *num_of_nodes, |
4760 | struct dfs_info3_param **target_nodes, | |
2c55608f IM |
4761 | const struct nls_table *nls_codepage, int remap, |
4762 | const char *searchName) | |
fec4585f IM |
4763 | { |
4764 | int i, rc = 0; | |
4765 | char *data_end; | |
4766 | bool is_unicode; | |
4767 | struct dfs_referral_level_3 *ref; | |
4768 | ||
5ca33c6a HH |
4769 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4770 | is_unicode = true; | |
4771 | else | |
4772 | is_unicode = false; | |
fec4585f IM |
4773 | *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); |
4774 | ||
4775 | if (*num_of_nodes < 1) { | |
b6b38f70 JP |
4776 | cERROR(1, "num_referrals: must be at least > 0," |
4777 | "but we get num_referrals = %d\n", *num_of_nodes); | |
fec4585f | 4778 | rc = -EINVAL; |
a1fe78f1 | 4779 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4780 | } |
4781 | ||
4782 | ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); | |
1d92cfd5 | 4783 | if (ref->VersionNumber != cpu_to_le16(3)) { |
b6b38f70 JP |
4784 | cERROR(1, "Referrals of V%d version are not supported," |
4785 | "should be V3", le16_to_cpu(ref->VersionNumber)); | |
fec4585f | 4786 | rc = -EINVAL; |
a1fe78f1 | 4787 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4788 | } |
4789 | ||
4790 | /* get the upper boundary of the resp buffer */ | |
4791 | data_end = (char *)(&(pSMBr->PathConsumed)) + | |
4792 | le16_to_cpu(pSMBr->t2.DataCount); | |
4793 | ||
f19159dc | 4794 | cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n", |
fec4585f | 4795 | *num_of_nodes, |
b6b38f70 | 4796 | le32_to_cpu(pSMBr->DFSFlags)); |
fec4585f IM |
4797 | |
4798 | *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * | |
4799 | *num_of_nodes, GFP_KERNEL); | |
4800 | if (*target_nodes == NULL) { | |
b6b38f70 | 4801 | cERROR(1, "Failed to allocate buffer for target_nodes\n"); |
fec4585f | 4802 | rc = -ENOMEM; |
a1fe78f1 | 4803 | goto parse_DFS_referrals_exit; |
fec4585f IM |
4804 | } |
4805 | ||
3ad2f3fb | 4806 | /* collect necessary data from referrals */ |
fec4585f IM |
4807 | for (i = 0; i < *num_of_nodes; i++) { |
4808 | char *temp; | |
4809 | int max_len; | |
4810 | struct dfs_info3_param *node = (*target_nodes)+i; | |
4811 | ||
0e0d2cf3 | 4812 | node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f | 4813 | if (is_unicode) { |
331c3135 JL |
4814 | __le16 *tmp = kmalloc(strlen(searchName)*2 + 2, |
4815 | GFP_KERNEL); | |
2920ee2b SF |
4816 | if (tmp == NULL) { |
4817 | rc = -ENOMEM; | |
4818 | goto parse_DFS_referrals_exit; | |
4819 | } | |
acbbb76a SF |
4820 | cifsConvertToUTF16((__le16 *) tmp, searchName, |
4821 | PATH_MAX, nls_codepage, remap); | |
4822 | node->path_consumed = cifs_utf16_bytes(tmp, | |
69f801fc | 4823 | le16_to_cpu(pSMBr->PathConsumed), |
2c55608f IM |
4824 | nls_codepage); |
4825 | kfree(tmp); | |
4826 | } else | |
4827 | node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); | |
4828 | ||
fec4585f IM |
4829 | node->server_type = le16_to_cpu(ref->ServerType); |
4830 | node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); | |
4831 | ||
4832 | /* copy DfsPath */ | |
4833 | temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); | |
4834 | max_len = data_end - temp; | |
acbbb76a SF |
4835 | node->path_name = cifs_strndup_from_utf16(temp, max_len, |
4836 | is_unicode, nls_codepage); | |
d8e2f53a JL |
4837 | if (!node->path_name) { |
4838 | rc = -ENOMEM; | |
a1fe78f1 | 4839 | goto parse_DFS_referrals_exit; |
066ce689 | 4840 | } |
fec4585f IM |
4841 | |
4842 | /* copy link target UNC */ | |
4843 | temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); | |
4844 | max_len = data_end - temp; | |
acbbb76a SF |
4845 | node->node_name = cifs_strndup_from_utf16(temp, max_len, |
4846 | is_unicode, nls_codepage); | |
d8f2799b | 4847 | if (!node->node_name) { |
d8e2f53a | 4848 | rc = -ENOMEM; |
d8f2799b SM |
4849 | goto parse_DFS_referrals_exit; |
4850 | } | |
4851 | ||
4852 | ref++; | |
fec4585f IM |
4853 | } |
4854 | ||
a1fe78f1 | 4855 | parse_DFS_referrals_exit: |
fec4585f IM |
4856 | if (rc) { |
4857 | free_dfs_info_array(*target_nodes, *num_of_nodes); | |
4858 | *target_nodes = NULL; | |
4859 | *num_of_nodes = 0; | |
4860 | } | |
4861 | return rc; | |
4862 | } | |
4863 | ||
1da177e4 | 4864 | int |
96daf2b0 | 4865 | CIFSGetDFSRefer(const int xid, struct cifs_ses *ses, |
1da177e4 | 4866 | const unsigned char *searchName, |
c2cf07d5 SF |
4867 | struct dfs_info3_param **target_nodes, |
4868 | unsigned int *num_of_nodes, | |
737b758c | 4869 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4870 | { |
4871 | /* TRANS2_GET_DFS_REFERRAL */ | |
4872 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4873 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4874 | int rc = 0; |
4875 | int bytes_returned; | |
4876 | int name_len; | |
1da177e4 | 4877 | __u16 params, byte_count; |
c2cf07d5 SF |
4878 | *num_of_nodes = 0; |
4879 | *target_nodes = NULL; | |
1da177e4 | 4880 | |
b6b38f70 | 4881 | cFYI(1, "In GetDFSRefer the path %s", searchName); |
1da177e4 LT |
4882 | if (ses == NULL) |
4883 | return -ENODEV; | |
4884 | getDFSRetry: | |
4885 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
4886 | (void **) &pSMBr); | |
4887 | if (rc) | |
4888 | return rc; | |
50c2f753 SF |
4889 | |
4890 | /* server pointer checked in called function, | |
1982c344 SF |
4891 | but should never be null here anyway */ |
4892 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
1da177e4 LT |
4893 | pSMB->hdr.Tid = ses->ipc_tid; |
4894 | pSMB->hdr.Uid = ses->Suid; | |
26f57364 | 4895 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4896 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4897 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4898 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4899 | |
4900 | if (ses->capabilities & CAP_UNICODE) { | |
4901 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4902 | name_len = | |
acbbb76a SF |
4903 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
4904 | searchName, PATH_MAX, nls_codepage, | |
4905 | remap); | |
1da177e4 LT |
4906 | name_len++; /* trailing null */ |
4907 | name_len *= 2; | |
50c2f753 | 4908 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
4909 | name_len = strnlen(searchName, PATH_MAX); |
4910 | name_len++; /* trailing null */ | |
4911 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
4912 | } | |
4913 | ||
790fe579 | 4914 | if (ses->server) { |
96daf2b0 | 4915 | if (ses->server->sec_mode & |
1a4e15a0 SF |
4916 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
4917 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
4918 | } | |
4919 | ||
50c2f753 | 4920 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4921 | |
1da177e4 LT |
4922 | params = 2 /* level */ + name_len /*includes null */ ; |
4923 | pSMB->TotalDataCount = 0; | |
4924 | pSMB->DataCount = 0; | |
4925 | pSMB->DataOffset = 0; | |
4926 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4927 | /* BB find exact max SMB PDU from sess structure BB */ |
4928 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4929 | pSMB->MaxSetupCount = 0; |
4930 | pSMB->Reserved = 0; | |
4931 | pSMB->Flags = 0; | |
4932 | pSMB->Timeout = 0; | |
4933 | pSMB->Reserved2 = 0; | |
4934 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4935 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4936 | pSMB->SetupCount = 1; |
4937 | pSMB->Reserved3 = 0; | |
4938 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4939 | byte_count = params + 3 /* pad */ ; | |
4940 | pSMB->ParameterCount = cpu_to_le16(params); | |
4941 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4942 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4943 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4944 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4945 | ||
4946 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4947 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4948 | if (rc) { | |
b6b38f70 | 4949 | cFYI(1, "Send error in GetDFSRefer = %d", rc); |
c2cf07d5 SF |
4950 | goto GetDFSRefExit; |
4951 | } | |
4952 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4953 | |
c2cf07d5 | 4954 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4955 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4956 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4957 | goto GetDFSRefExit; |
4958 | } | |
c2cf07d5 | 4959 | |
b6b38f70 | 4960 | cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d", |
820a803f | 4961 | get_bcc(&pSMBr->hdr), |
b6b38f70 | 4962 | le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4 | 4963 | |
fec4585f | 4964 | /* parse returned result into more usable form */ |
a1fe78f1 | 4965 | rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f IM |
4966 | target_nodes, nls_codepage, remap, |
4967 | searchName); | |
c2cf07d5 | 4968 | |
1da177e4 | 4969 | GetDFSRefExit: |
0d817bc0 | 4970 | cifs_buf_release(pSMB); |
1da177e4 LT |
4971 | |
4972 | if (rc == -EAGAIN) | |
4973 | goto getDFSRetry; | |
4974 | ||
4975 | return rc; | |
4976 | } | |
4977 | ||
20962438 SF |
4978 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4979 | int | |
96daf2b0 | 4980 | SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
20962438 SF |
4981 | { |
4982 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4983 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4984 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4985 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4986 | int rc = 0; | |
4987 | int bytes_returned = 0; | |
4988 | __u16 params, byte_count; | |
4989 | ||
b6b38f70 | 4990 | cFYI(1, "OldQFSInfo"); |
20962438 SF |
4991 | oldQFSInfoRetry: |
4992 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4993 | (void **) &pSMBr); | |
4994 | if (rc) | |
4995 | return rc; | |
20962438 SF |
4996 | |
4997 | params = 2; /* level */ | |
4998 | pSMB->TotalDataCount = 0; | |
4999 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5000 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5001 | pSMB->MaxSetupCount = 0; | |
5002 | pSMB->Reserved = 0; | |
5003 | pSMB->Flags = 0; | |
5004 | pSMB->Timeout = 0; | |
5005 | pSMB->Reserved2 = 0; | |
5006 | byte_count = params + 1 /* pad */ ; | |
5007 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5008 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5009 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
5010 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
5011 | pSMB->DataCount = 0; | |
5012 | pSMB->DataOffset = 0; | |
5013 | pSMB->SetupCount = 1; | |
5014 | pSMB->Reserved3 = 0; | |
5015 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5016 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 5017 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
5018 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5019 | ||
5020 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5021 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5022 | if (rc) { | |
b6b38f70 | 5023 | cFYI(1, "Send error in QFSInfo = %d", rc); |
20962438 SF |
5024 | } else { /* decode response */ |
5025 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5026 | ||
820a803f | 5027 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
5028 | rc = -EIO; /* bad smb */ |
5029 | else { | |
5030 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
b6b38f70 | 5031 | cFYI(1, "qfsinf resp BCC: %d Offset %d", |
820a803f | 5032 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 5033 | |
50c2f753 | 5034 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
5035 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
5036 | FSData->f_bsize = | |
5037 | le16_to_cpu(response_data->BytesPerSector) * | |
5038 | le32_to_cpu(response_data-> | |
5039 | SectorsPerAllocationUnit); | |
5040 | FSData->f_blocks = | |
50c2f753 | 5041 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
5042 | FSData->f_bfree = FSData->f_bavail = |
5043 | le32_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
5044 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
5045 | (unsigned long long)FSData->f_blocks, | |
5046 | (unsigned long long)FSData->f_bfree, | |
5047 | FSData->f_bsize); | |
20962438 SF |
5048 | } |
5049 | } | |
5050 | cifs_buf_release(pSMB); | |
5051 | ||
5052 | if (rc == -EAGAIN) | |
5053 | goto oldQFSInfoRetry; | |
5054 | ||
5055 | return rc; | |
5056 | } | |
5057 | ||
1da177e4 | 5058 | int |
96daf2b0 | 5059 | CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
1da177e4 LT |
5060 | { |
5061 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5062 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5063 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5064 | FILE_SYSTEM_INFO *response_data; | |
5065 | int rc = 0; | |
5066 | int bytes_returned = 0; | |
5067 | __u16 params, byte_count; | |
5068 | ||
b6b38f70 | 5069 | cFYI(1, "In QFSInfo"); |
1da177e4 LT |
5070 | QFSInfoRetry: |
5071 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5072 | (void **) &pSMBr); | |
5073 | if (rc) | |
5074 | return rc; | |
5075 | ||
5076 | params = 2; /* level */ | |
5077 | pSMB->TotalDataCount = 0; | |
5078 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 5079 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
5080 | pSMB->MaxSetupCount = 0; |
5081 | pSMB->Reserved = 0; | |
5082 | pSMB->Flags = 0; | |
5083 | pSMB->Timeout = 0; | |
5084 | pSMB->Reserved2 = 0; | |
5085 | byte_count = params + 1 /* pad */ ; | |
5086 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5087 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5088 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5089 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5090 | pSMB->DataCount = 0; |
5091 | pSMB->DataOffset = 0; | |
5092 | pSMB->SetupCount = 1; | |
5093 | pSMB->Reserved3 = 0; | |
5094 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5095 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 5096 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5097 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5098 | ||
5099 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5100 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5101 | if (rc) { | |
b6b38f70 | 5102 | cFYI(1, "Send error in QFSInfo = %d", rc); |
1da177e4 | 5103 | } else { /* decode response */ |
50c2f753 | 5104 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 5105 | |
820a803f | 5106 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
5107 | rc = -EIO; /* bad smb */ |
5108 | else { | |
5109 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
5110 | |
5111 | response_data = | |
5112 | (FILE_SYSTEM_INFO | |
5113 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5114 | data_offset); | |
5115 | FSData->f_bsize = | |
5116 | le32_to_cpu(response_data->BytesPerSector) * | |
5117 | le32_to_cpu(response_data-> | |
5118 | SectorsPerAllocationUnit); | |
5119 | FSData->f_blocks = | |
5120 | le64_to_cpu(response_data->TotalAllocationUnits); | |
5121 | FSData->f_bfree = FSData->f_bavail = | |
5122 | le64_to_cpu(response_data->FreeAllocationUnits); | |
b6b38f70 JP |
5123 | cFYI(1, "Blocks: %lld Free: %lld Block size %ld", |
5124 | (unsigned long long)FSData->f_blocks, | |
5125 | (unsigned long long)FSData->f_bfree, | |
5126 | FSData->f_bsize); | |
1da177e4 LT |
5127 | } |
5128 | } | |
5129 | cifs_buf_release(pSMB); | |
5130 | ||
5131 | if (rc == -EAGAIN) | |
5132 | goto QFSInfoRetry; | |
5133 | ||
5134 | return rc; | |
5135 | } | |
5136 | ||
5137 | int | |
96daf2b0 | 5138 | CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5139 | { |
5140 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5141 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5142 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5143 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
5144 | int rc = 0; | |
5145 | int bytes_returned = 0; | |
5146 | __u16 params, byte_count; | |
5147 | ||
b6b38f70 | 5148 | cFYI(1, "In QFSAttributeInfo"); |
1da177e4 LT |
5149 | QFSAttributeRetry: |
5150 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5151 | (void **) &pSMBr); | |
5152 | if (rc) | |
5153 | return rc; | |
5154 | ||
5155 | params = 2; /* level */ | |
5156 | pSMB->TotalDataCount = 0; | |
5157 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5158 | /* BB find exact max SMB PDU from sess structure BB */ |
5159 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5160 | pSMB->MaxSetupCount = 0; |
5161 | pSMB->Reserved = 0; | |
5162 | pSMB->Flags = 0; | |
5163 | pSMB->Timeout = 0; | |
5164 | pSMB->Reserved2 = 0; | |
5165 | byte_count = params + 1 /* pad */ ; | |
5166 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5167 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5168 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5169 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5170 | pSMB->DataCount = 0; |
5171 | pSMB->DataOffset = 0; | |
5172 | pSMB->SetupCount = 1; | |
5173 | pSMB->Reserved3 = 0; | |
5174 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5175 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 5176 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5177 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5178 | ||
5179 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5180 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5181 | if (rc) { | |
b6b38f70 | 5182 | cERROR(1, "Send error in QFSAttributeInfo = %d", rc); |
1da177e4 LT |
5183 | } else { /* decode response */ |
5184 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5185 | ||
820a803f | 5186 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 5187 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
5188 | rc = -EIO; /* bad smb */ |
5189 | } else { | |
5190 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5191 | response_data = | |
5192 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
5193 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5194 | data_offset); | |
5195 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 5196 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
5197 | } |
5198 | } | |
5199 | cifs_buf_release(pSMB); | |
5200 | ||
5201 | if (rc == -EAGAIN) | |
5202 | goto QFSAttributeRetry; | |
5203 | ||
5204 | return rc; | |
5205 | } | |
5206 | ||
5207 | int | |
96daf2b0 | 5208 | CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5209 | { |
5210 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
5211 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5212 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5213 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
5214 | int rc = 0; | |
5215 | int bytes_returned = 0; | |
5216 | __u16 params, byte_count; | |
5217 | ||
b6b38f70 | 5218 | cFYI(1, "In QFSDeviceInfo"); |
1da177e4 LT |
5219 | QFSDeviceRetry: |
5220 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5221 | (void **) &pSMBr); | |
5222 | if (rc) | |
5223 | return rc; | |
5224 | ||
5225 | params = 2; /* level */ | |
5226 | pSMB->TotalDataCount = 0; | |
5227 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5228 | /* BB find exact max SMB PDU from sess structure BB */ |
5229 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5230 | pSMB->MaxSetupCount = 0; |
5231 | pSMB->Reserved = 0; | |
5232 | pSMB->Flags = 0; | |
5233 | pSMB->Timeout = 0; | |
5234 | pSMB->Reserved2 = 0; | |
5235 | byte_count = params + 1 /* pad */ ; | |
5236 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5237 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5238 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5239 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
5240 | |
5241 | pSMB->DataCount = 0; | |
5242 | pSMB->DataOffset = 0; | |
5243 | pSMB->SetupCount = 1; | |
5244 | pSMB->Reserved3 = 0; | |
5245 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5246 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 5247 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5248 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5249 | ||
5250 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5251 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5252 | if (rc) { | |
b6b38f70 | 5253 | cFYI(1, "Send error in QFSDeviceInfo = %d", rc); |
1da177e4 LT |
5254 | } else { /* decode response */ |
5255 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5256 | ||
820a803f JL |
5257 | if (rc || get_bcc(&pSMBr->hdr) < |
5258 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
5259 | rc = -EIO; /* bad smb */ |
5260 | else { | |
5261 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5262 | response_data = | |
737b758c SF |
5263 | (FILE_SYSTEM_DEVICE_INFO *) |
5264 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
5265 | data_offset); |
5266 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 5267 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
5268 | } |
5269 | } | |
5270 | cifs_buf_release(pSMB); | |
5271 | ||
5272 | if (rc == -EAGAIN) | |
5273 | goto QFSDeviceRetry; | |
5274 | ||
5275 | return rc; | |
5276 | } | |
5277 | ||
5278 | int | |
96daf2b0 | 5279 | CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
5280 | { |
5281 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
5282 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5283 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5284 | FILE_SYSTEM_UNIX_INFO *response_data; | |
5285 | int rc = 0; | |
5286 | int bytes_returned = 0; | |
5287 | __u16 params, byte_count; | |
5288 | ||
b6b38f70 | 5289 | cFYI(1, "In QFSUnixInfo"); |
1da177e4 | 5290 | QFSUnixRetry: |
f569599a JL |
5291 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5292 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
5293 | if (rc) |
5294 | return rc; | |
5295 | ||
5296 | params = 2; /* level */ | |
5297 | pSMB->TotalDataCount = 0; | |
5298 | pSMB->DataCount = 0; | |
5299 | pSMB->DataOffset = 0; | |
5300 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5301 | /* BB find exact max SMB PDU from sess structure BB */ |
5302 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5303 | pSMB->MaxSetupCount = 0; |
5304 | pSMB->Reserved = 0; | |
5305 | pSMB->Flags = 0; | |
5306 | pSMB->Timeout = 0; | |
5307 | pSMB->Reserved2 = 0; | |
5308 | byte_count = params + 1 /* pad */ ; | |
5309 | pSMB->ParameterCount = cpu_to_le16(params); | |
5310 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5311 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5312 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5313 | pSMB->SetupCount = 1; |
5314 | pSMB->Reserved3 = 0; | |
5315 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5316 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 5317 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5318 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5319 | ||
5320 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5321 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5322 | if (rc) { | |
b6b38f70 | 5323 | cERROR(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5324 | } else { /* decode response */ |
5325 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5326 | ||
820a803f | 5327 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5328 | rc = -EIO; /* bad smb */ |
5329 | } else { | |
5330 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5331 | response_data = | |
5332 | (FILE_SYSTEM_UNIX_INFO | |
5333 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5334 | data_offset); | |
5335 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 5336 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
5337 | } |
5338 | } | |
5339 | cifs_buf_release(pSMB); | |
5340 | ||
5341 | if (rc == -EAGAIN) | |
5342 | goto QFSUnixRetry; | |
5343 | ||
5344 | ||
5345 | return rc; | |
5346 | } | |
5347 | ||
ac67055e | 5348 | int |
96daf2b0 | 5349 | CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
5350 | { |
5351 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
5352 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
5353 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
5354 | int rc = 0; | |
5355 | int bytes_returned = 0; | |
5356 | __u16 params, param_offset, offset, byte_count; | |
5357 | ||
b6b38f70 | 5358 | cFYI(1, "In SETFSUnixInfo"); |
ac67055e | 5359 | SETFSUnixRetry: |
f26282c9 | 5360 | /* BB switch to small buf init to save memory */ |
f569599a JL |
5361 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
5362 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
5363 | if (rc) |
5364 | return rc; | |
5365 | ||
5366 | params = 4; /* 2 bytes zero followed by info level. */ | |
5367 | pSMB->MaxSetupCount = 0; | |
5368 | pSMB->Reserved = 0; | |
5369 | pSMB->Flags = 0; | |
5370 | pSMB->Timeout = 0; | |
5371 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
5372 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
5373 | - 4; | |
ac67055e JA |
5374 | offset = param_offset + params; |
5375 | ||
5376 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
5377 | /* BB find exact max SMB PDU from sess structure BB */ |
5378 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
5379 | pSMB->SetupCount = 1; |
5380 | pSMB->Reserved3 = 0; | |
5381 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
5382 | byte_count = 1 /* pad */ + params + 12; | |
5383 | ||
5384 | pSMB->DataCount = cpu_to_le16(12); | |
5385 | pSMB->ParameterCount = cpu_to_le16(params); | |
5386 | pSMB->TotalDataCount = pSMB->DataCount; | |
5387 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5388 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5389 | pSMB->DataOffset = cpu_to_le16(offset); | |
5390 | ||
5391 | /* Params. */ | |
5392 | pSMB->FileNum = 0; | |
5393 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
5394 | ||
5395 | /* Data. */ | |
5396 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
5397 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
5398 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
5399 | ||
be8e3b00 | 5400 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
5401 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5402 | ||
5403 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5404 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5405 | if (rc) { | |
b6b38f70 | 5406 | cERROR(1, "Send error in SETFSUnixInfo = %d", rc); |
ac67055e JA |
5407 | } else { /* decode response */ |
5408 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 5409 | if (rc) |
ac67055e | 5410 | rc = -EIO; /* bad smb */ |
ac67055e JA |
5411 | } |
5412 | cifs_buf_release(pSMB); | |
5413 | ||
5414 | if (rc == -EAGAIN) | |
5415 | goto SETFSUnixRetry; | |
5416 | ||
5417 | return rc; | |
5418 | } | |
5419 | ||
5420 | ||
1da177e4 LT |
5421 | |
5422 | int | |
96daf2b0 | 5423 | CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon, |
737b758c | 5424 | struct kstatfs *FSData) |
1da177e4 LT |
5425 | { |
5426 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
5427 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
5428 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
5429 | FILE_SYSTEM_POSIX_INFO *response_data; | |
5430 | int rc = 0; | |
5431 | int bytes_returned = 0; | |
5432 | __u16 params, byte_count; | |
5433 | ||
b6b38f70 | 5434 | cFYI(1, "In QFSPosixInfo"); |
1da177e4 LT |
5435 | QFSPosixRetry: |
5436 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5437 | (void **) &pSMBr); | |
5438 | if (rc) | |
5439 | return rc; | |
5440 | ||
5441 | params = 2; /* level */ | |
5442 | pSMB->TotalDataCount = 0; | |
5443 | pSMB->DataCount = 0; | |
5444 | pSMB->DataOffset = 0; | |
5445 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5446 | /* BB find exact max SMB PDU from sess structure BB */ |
5447 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
5448 | pSMB->MaxSetupCount = 0; |
5449 | pSMB->Reserved = 0; | |
5450 | pSMB->Flags = 0; | |
5451 | pSMB->Timeout = 0; | |
5452 | pSMB->Reserved2 = 0; | |
5453 | byte_count = params + 1 /* pad */ ; | |
5454 | pSMB->ParameterCount = cpu_to_le16(params); | |
5455 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
5456 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
5457 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
5458 | pSMB->SetupCount = 1; |
5459 | pSMB->Reserved3 = 0; | |
5460 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
5461 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 5462 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5463 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5464 | ||
5465 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5466 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5467 | if (rc) { | |
b6b38f70 | 5468 | cFYI(1, "Send error in QFSUnixInfo = %d", rc); |
1da177e4 LT |
5469 | } else { /* decode response */ |
5470 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5471 | ||
820a803f | 5472 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
5473 | rc = -EIO; /* bad smb */ |
5474 | } else { | |
5475 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5476 | response_data = | |
5477 | (FILE_SYSTEM_POSIX_INFO | |
5478 | *) (((char *) &pSMBr->hdr.Protocol) + | |
5479 | data_offset); | |
5480 | FSData->f_bsize = | |
5481 | le32_to_cpu(response_data->BlockSize); | |
5482 | FSData->f_blocks = | |
5483 | le64_to_cpu(response_data->TotalBlocks); | |
5484 | FSData->f_bfree = | |
5485 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5486 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5487 | FSData->f_bavail = FSData->f_bfree; |
5488 | } else { | |
5489 | FSData->f_bavail = | |
50c2f753 | 5490 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5491 | } |
790fe579 | 5492 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5493 | FSData->f_files = |
50c2f753 | 5494 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5495 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5496 | FSData->f_ffree = |
50c2f753 | 5497 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5498 | } |
5499 | } | |
5500 | cifs_buf_release(pSMB); | |
5501 | ||
5502 | if (rc == -EAGAIN) | |
5503 | goto QFSPosixRetry; | |
5504 | ||
5505 | return rc; | |
5506 | } | |
5507 | ||
5508 | ||
50c2f753 SF |
5509 | /* We can not use write of zero bytes trick to |
5510 | set file size due to need for large file support. Also note that | |
5511 | this SetPathInfo is preferred to SetFileInfo based method in next | |
1da177e4 LT |
5512 | routine which is only needed to work around a sharing violation bug |
5513 | in Samba which this routine can run into */ | |
5514 | ||
5515 | int | |
96daf2b0 | 5516 | CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName, |
4b18f2a9 | 5517 | __u64 size, bool SetAllocation, |
737b758c | 5518 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
5519 | { |
5520 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5521 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5522 | struct file_end_of_file_info *parm_data; | |
5523 | int name_len; | |
5524 | int rc = 0; | |
5525 | int bytes_returned = 0; | |
5526 | __u16 params, byte_count, data_count, param_offset, offset; | |
5527 | ||
b6b38f70 | 5528 | cFYI(1, "In SetEOF"); |
1da177e4 LT |
5529 | SetEOFRetry: |
5530 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5531 | (void **) &pSMBr); | |
5532 | if (rc) | |
5533 | return rc; | |
5534 | ||
5535 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5536 | name_len = | |
acbbb76a SF |
5537 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5538 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5539 | name_len++; /* trailing null */ |
5540 | name_len *= 2; | |
3e87d803 | 5541 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5542 | name_len = strnlen(fileName, PATH_MAX); |
5543 | name_len++; /* trailing null */ | |
5544 | strncpy(pSMB->FileName, fileName, name_len); | |
5545 | } | |
5546 | params = 6 + name_len; | |
26f57364 | 5547 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5548 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5549 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5550 | pSMB->MaxSetupCount = 0; |
5551 | pSMB->Reserved = 0; | |
5552 | pSMB->Flags = 0; | |
5553 | pSMB->Timeout = 0; | |
5554 | pSMB->Reserved2 = 0; | |
5555 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5556 | InformationLevel) - 4; |
1da177e4 | 5557 | offset = param_offset + params; |
790fe579 | 5558 | if (SetAllocation) { |
50c2f753 SF |
5559 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5560 | pSMB->InformationLevel = | |
5561 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5562 | else | |
5563 | pSMB->InformationLevel = | |
5564 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5565 | } else /* Set File Size */ { | |
1da177e4 LT |
5566 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5567 | pSMB->InformationLevel = | |
50c2f753 | 5568 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5569 | else |
5570 | pSMB->InformationLevel = | |
50c2f753 | 5571 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5572 | } |
5573 | ||
5574 | parm_data = | |
5575 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5576 | offset); | |
5577 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5578 | pSMB->DataOffset = cpu_to_le16(offset); | |
5579 | pSMB->SetupCount = 1; | |
5580 | pSMB->Reserved3 = 0; | |
5581 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5582 | byte_count = 3 /* pad */ + params + data_count; | |
5583 | pSMB->DataCount = cpu_to_le16(data_count); | |
5584 | pSMB->TotalDataCount = pSMB->DataCount; | |
5585 | pSMB->ParameterCount = cpu_to_le16(params); | |
5586 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5587 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5588 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5589 | parm_data->FileSize = cpu_to_le64(size); |
5590 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5591 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5592 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5593 | if (rc) |
b6b38f70 | 5594 | cFYI(1, "SetPathInfo (file size) returned %d", rc); |
1da177e4 LT |
5595 | |
5596 | cifs_buf_release(pSMB); | |
5597 | ||
5598 | if (rc == -EAGAIN) | |
5599 | goto SetEOFRetry; | |
5600 | ||
5601 | return rc; | |
5602 | } | |
5603 | ||
5604 | int | |
96daf2b0 | 5605 | CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size, |
4b18f2a9 | 5606 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) |
1da177e4 LT |
5607 | { |
5608 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5609 | struct file_end_of_file_info *parm_data; |
5610 | int rc = 0; | |
1da177e4 LT |
5611 | __u16 params, param_offset, offset, byte_count, count; |
5612 | ||
b6b38f70 JP |
5613 | cFYI(1, "SetFileSize (via SetFileInfo) %lld", |
5614 | (long long)size); | |
cd63499c SF |
5615 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5616 | ||
1da177e4 LT |
5617 | if (rc) |
5618 | return rc; | |
5619 | ||
5620 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5621 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5622 | |
1da177e4 LT |
5623 | params = 6; |
5624 | pSMB->MaxSetupCount = 0; | |
5625 | pSMB->Reserved = 0; | |
5626 | pSMB->Flags = 0; | |
5627 | pSMB->Timeout = 0; | |
5628 | pSMB->Reserved2 = 0; | |
5629 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5630 | offset = param_offset + params; | |
5631 | ||
1da177e4 LT |
5632 | count = sizeof(struct file_end_of_file_info); |
5633 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5634 | /* BB find exact max SMB PDU from sess structure BB */ |
5635 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5636 | pSMB->SetupCount = 1; |
5637 | pSMB->Reserved3 = 0; | |
5638 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5639 | byte_count = 3 /* pad */ + params + count; | |
5640 | pSMB->DataCount = cpu_to_le16(count); | |
5641 | pSMB->ParameterCount = cpu_to_le16(params); | |
5642 | pSMB->TotalDataCount = pSMB->DataCount; | |
5643 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5644 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5645 | parm_data = | |
50c2f753 SF |
5646 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
5647 | + offset); | |
1da177e4 LT |
5648 | pSMB->DataOffset = cpu_to_le16(offset); |
5649 | parm_data->FileSize = cpu_to_le64(size); | |
5650 | pSMB->Fid = fid; | |
790fe579 | 5651 | if (SetAllocation) { |
1da177e4 LT |
5652 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5653 | pSMB->InformationLevel = | |
5654 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5655 | else | |
5656 | pSMB->InformationLevel = | |
5657 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5658 | } else /* Set File Size */ { |
1da177e4 LT |
5659 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5660 | pSMB->InformationLevel = | |
50c2f753 | 5661 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5662 | else |
5663 | pSMB->InformationLevel = | |
50c2f753 | 5664 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5665 | } |
5666 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5667 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5668 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5669 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4 | 5670 | if (rc) { |
b6b38f70 | 5671 | cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc); |
1da177e4 LT |
5672 | } |
5673 | ||
50c2f753 | 5674 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5675 | since file handle passed in no longer valid */ |
5676 | ||
5677 | return rc; | |
5678 | } | |
5679 | ||
50c2f753 | 5680 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5681 | an open handle, rather than by pathname - this is awkward due to |
5682 | potential access conflicts on the open, but it is unavoidable for these | |
5683 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5684 | time and resort to the original setpathinfo level which takes the ancient | |
5685 | DOS time format with 2 second granularity */ | |
5686 | int | |
96daf2b0 | 5687 | CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5688 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5689 | { |
5690 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5691 | char *data_offset; |
5692 | int rc = 0; | |
1da177e4 LT |
5693 | __u16 params, param_offset, offset, byte_count, count; |
5694 | ||
b6b38f70 | 5695 | cFYI(1, "Set Times (via SetFileInfo)"); |
cd63499c SF |
5696 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5697 | ||
1da177e4 LT |
5698 | if (rc) |
5699 | return rc; | |
5700 | ||
2dd2dfa0 JL |
5701 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5702 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5703 | |
1da177e4 LT |
5704 | params = 6; |
5705 | pSMB->MaxSetupCount = 0; | |
5706 | pSMB->Reserved = 0; | |
5707 | pSMB->Flags = 0; | |
5708 | pSMB->Timeout = 0; | |
5709 | pSMB->Reserved2 = 0; | |
5710 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5711 | offset = param_offset + params; | |
5712 | ||
b2a3ad9c JL |
5713 | data_offset = (char *)pSMB + |
5714 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5715 | |
26f57364 | 5716 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5717 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5718 | /* BB find max SMB PDU from sess */ |
5719 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5720 | pSMB->SetupCount = 1; |
5721 | pSMB->Reserved3 = 0; | |
5722 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5723 | byte_count = 3 /* pad */ + params + count; | |
5724 | pSMB->DataCount = cpu_to_le16(count); | |
5725 | pSMB->ParameterCount = cpu_to_le16(params); | |
5726 | pSMB->TotalDataCount = pSMB->DataCount; | |
5727 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5728 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5729 | pSMB->DataOffset = cpu_to_le16(offset); | |
5730 | pSMB->Fid = fid; | |
5731 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5732 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5733 | else | |
5734 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5735 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5736 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5737 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5738 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5739 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926 | 5740 | if (rc) |
b6b38f70 | 5741 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
1da177e4 | 5742 | |
50c2f753 | 5743 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5744 | since file handle passed in no longer valid */ |
5745 | ||
5746 | return rc; | |
5747 | } | |
5748 | ||
6d22f098 | 5749 | int |
96daf2b0 | 5750 | CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5751 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5752 | { | |
5753 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5754 | char *data_offset; | |
5755 | int rc = 0; | |
5756 | __u16 params, param_offset, offset, byte_count, count; | |
5757 | ||
b6b38f70 | 5758 | cFYI(1, "Set File Disposition (via SetFileInfo)"); |
6d22f098 JL |
5759 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5760 | ||
5761 | if (rc) | |
5762 | return rc; | |
5763 | ||
5764 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5765 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5766 | ||
5767 | params = 6; | |
5768 | pSMB->MaxSetupCount = 0; | |
5769 | pSMB->Reserved = 0; | |
5770 | pSMB->Flags = 0; | |
5771 | pSMB->Timeout = 0; | |
5772 | pSMB->Reserved2 = 0; | |
5773 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5774 | offset = param_offset + params; | |
5775 | ||
5776 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5777 | ||
5778 | count = 1; | |
5779 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5780 | /* BB find max SMB PDU from sess */ | |
5781 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5782 | pSMB->SetupCount = 1; | |
5783 | pSMB->Reserved3 = 0; | |
5784 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5785 | byte_count = 3 /* pad */ + params + count; | |
5786 | pSMB->DataCount = cpu_to_le16(count); | |
5787 | pSMB->ParameterCount = cpu_to_le16(params); | |
5788 | pSMB->TotalDataCount = pSMB->DataCount; | |
5789 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5790 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5791 | pSMB->DataOffset = cpu_to_le16(offset); | |
5792 | pSMB->Fid = fid; | |
5793 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5794 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5795 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5796 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5797 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5798 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f098 | 5799 | if (rc) |
b6b38f70 | 5800 | cFYI(1, "Send error in SetFileDisposition = %d", rc); |
6d22f098 JL |
5801 | |
5802 | return rc; | |
5803 | } | |
1da177e4 LT |
5804 | |
5805 | int | |
96daf2b0 | 5806 | CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon, |
6fc000e5 JL |
5807 | const char *fileName, const FILE_BASIC_INFO *data, |
5808 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5809 | { |
5810 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5811 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5812 | int name_len; | |
5813 | int rc = 0; | |
5814 | int bytes_returned = 0; | |
5815 | char *data_offset; | |
5816 | __u16 params, param_offset, offset, byte_count, count; | |
5817 | ||
b6b38f70 | 5818 | cFYI(1, "In SetTimes"); |
1da177e4 LT |
5819 | |
5820 | SetTimesRetry: | |
5821 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5822 | (void **) &pSMBr); | |
5823 | if (rc) | |
5824 | return rc; | |
5825 | ||
5826 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5827 | name_len = | |
acbbb76a SF |
5828 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5829 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5830 | name_len++; /* trailing null */ |
5831 | name_len *= 2; | |
50c2f753 | 5832 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5833 | name_len = strnlen(fileName, PATH_MAX); |
5834 | name_len++; /* trailing null */ | |
5835 | strncpy(pSMB->FileName, fileName, name_len); | |
5836 | } | |
5837 | ||
5838 | params = 6 + name_len; | |
26f57364 | 5839 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5840 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5841 | /* BB find max SMB PDU from sess structure BB */ |
5842 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5843 | pSMB->MaxSetupCount = 0; |
5844 | pSMB->Reserved = 0; | |
5845 | pSMB->Flags = 0; | |
5846 | pSMB->Timeout = 0; | |
5847 | pSMB->Reserved2 = 0; | |
5848 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5849 | InformationLevel) - 4; |
1da177e4 LT |
5850 | offset = param_offset + params; |
5851 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5852 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5853 | pSMB->DataOffset = cpu_to_le16(offset); | |
5854 | pSMB->SetupCount = 1; | |
5855 | pSMB->Reserved3 = 0; | |
5856 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5857 | byte_count = 3 /* pad */ + params + count; | |
5858 | ||
5859 | pSMB->DataCount = cpu_to_le16(count); | |
5860 | pSMB->ParameterCount = cpu_to_le16(params); | |
5861 | pSMB->TotalDataCount = pSMB->DataCount; | |
5862 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5863 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5864 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5865 | else | |
5866 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5867 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5868 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5869 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5870 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5871 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5872 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5873 | if (rc) |
b6b38f70 | 5874 | cFYI(1, "SetPathInfo (times) returned %d", rc); |
1da177e4 LT |
5875 | |
5876 | cifs_buf_release(pSMB); | |
5877 | ||
5878 | if (rc == -EAGAIN) | |
5879 | goto SetTimesRetry; | |
5880 | ||
5881 | return rc; | |
5882 | } | |
5883 | ||
5884 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
5885 | /* Can be used to set attributes */ | |
5886 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
5887 | handling it anyway and NT4 was what we thought it would be needed for | |
5888 | Do not delete it until we prove whether needed for Win9x though */ | |
5889 | int | |
96daf2b0 | 5890 | CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4 LT |
5891 | __u16 dos_attrs, const struct nls_table *nls_codepage) |
5892 | { | |
5893 | SETATTR_REQ *pSMB = NULL; | |
5894 | SETATTR_RSP *pSMBr = NULL; | |
5895 | int rc = 0; | |
5896 | int bytes_returned; | |
5897 | int name_len; | |
5898 | ||
b6b38f70 | 5899 | cFYI(1, "In SetAttrLegacy"); |
1da177e4 LT |
5900 | |
5901 | SetAttrLgcyRetry: | |
5902 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
5903 | (void **) &pSMBr); | |
5904 | if (rc) | |
5905 | return rc; | |
5906 | ||
5907 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5908 | name_len = | |
acbbb76a SF |
5909 | ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
5910 | PATH_MAX, nls_codepage); | |
1da177e4 LT |
5911 | name_len++; /* trailing null */ |
5912 | name_len *= 2; | |
50c2f753 | 5913 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
5914 | name_len = strnlen(fileName, PATH_MAX); |
5915 | name_len++; /* trailing null */ | |
5916 | strncpy(pSMB->fileName, fileName, name_len); | |
5917 | } | |
5918 | pSMB->attr = cpu_to_le16(dos_attrs); | |
5919 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 5920 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
5921 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
5922 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5923 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5924 | if (rc) |
b6b38f70 | 5925 | cFYI(1, "Error in LegacySetAttr = %d", rc); |
1da177e4 LT |
5926 | |
5927 | cifs_buf_release(pSMB); | |
5928 | ||
5929 | if (rc == -EAGAIN) | |
5930 | goto SetAttrLgcyRetry; | |
5931 | ||
5932 | return rc; | |
5933 | } | |
5934 | #endif /* temporarily unneeded SetAttr legacy function */ | |
5935 | ||
654cf14a JL |
5936 | static void |
5937 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5938 | const struct cifs_unix_set_info_args *args) | |
5939 | { | |
5940 | u64 mode = args->mode; | |
5941 | ||
5942 | /* | |
5943 | * Samba server ignores set of file size to zero due to bugs in some | |
5944 | * older clients, but we should be precise - we use SetFileSize to | |
5945 | * set file size and do not want to truncate file size to zero | |
25985edc | 5946 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5947 | * zero instead of -1 here |
5948 | */ | |
5949 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5950 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5951 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5952 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5953 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
5954 | data_offset->Uid = cpu_to_le64(args->uid); | |
5955 | data_offset->Gid = cpu_to_le64(args->gid); | |
5956 | /* better to leave device as zero when it is */ | |
5957 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5958 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5959 | data_offset->Permissions = cpu_to_le64(mode); | |
5960 | ||
5961 | if (S_ISREG(mode)) | |
5962 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5963 | else if (S_ISDIR(mode)) | |
5964 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5965 | else if (S_ISLNK(mode)) | |
5966 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5967 | else if (S_ISCHR(mode)) | |
5968 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5969 | else if (S_ISBLK(mode)) | |
5970 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5971 | else if (S_ISFIFO(mode)) | |
5972 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5973 | else if (S_ISSOCK(mode)) | |
5974 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5975 | } | |
5976 | ||
3bbeeb3c | 5977 | int |
96daf2b0 | 5978 | CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5979 | const struct cifs_unix_set_info_args *args, |
5980 | u16 fid, u32 pid_of_opener) | |
5981 | { | |
5982 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5983 | char *data_offset; |
3bbeeb3c JL |
5984 | int rc = 0; |
5985 | u16 params, param_offset, offset, byte_count, count; | |
5986 | ||
b6b38f70 | 5987 | cFYI(1, "Set Unix Info (via SetFileInfo)"); |
3bbeeb3c JL |
5988 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5989 | ||
5990 | if (rc) | |
5991 | return rc; | |
5992 | ||
5993 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5994 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5995 | ||
5996 | params = 6; | |
5997 | pSMB->MaxSetupCount = 0; | |
5998 | pSMB->Reserved = 0; | |
5999 | pSMB->Flags = 0; | |
6000 | pSMB->Timeout = 0; | |
6001 | pSMB->Reserved2 = 0; | |
6002 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
6003 | offset = param_offset + params; | |
6004 | ||
b2a3ad9c JL |
6005 | data_offset = (char *)pSMB + |
6006 | offsetof(struct smb_hdr, Protocol) + offset; | |
6007 | ||
3bbeeb3c JL |
6008 | count = sizeof(FILE_UNIX_BASIC_INFO); |
6009 | ||
6010 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
6011 | /* BB find max SMB PDU from sess */ | |
6012 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
6013 | pSMB->SetupCount = 1; | |
6014 | pSMB->Reserved3 = 0; | |
6015 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
6016 | byte_count = 3 /* pad */ + params + count; | |
6017 | pSMB->DataCount = cpu_to_le16(count); | |
6018 | pSMB->ParameterCount = cpu_to_le16(params); | |
6019 | pSMB->TotalDataCount = pSMB->DataCount; | |
6020 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6021 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6022 | pSMB->DataOffset = cpu_to_le16(offset); | |
6023 | pSMB->Fid = fid; | |
6024 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6025 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6026 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
6027 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6028 | ||
b2a3ad9c | 6029 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 6030 | |
792af7b0 | 6031 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c | 6032 | if (rc) |
b6b38f70 | 6033 | cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc); |
3bbeeb3c JL |
6034 | |
6035 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
6036 | since file handle passed in no longer valid */ | |
6037 | ||
6038 | return rc; | |
6039 | } | |
6040 | ||
1da177e4 | 6041 | int |
96daf2b0 | 6042 | CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName, |
01ea95e3 JL |
6043 | const struct cifs_unix_set_info_args *args, |
6044 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6045 | { |
6046 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
6047 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
6048 | int name_len; | |
6049 | int rc = 0; | |
6050 | int bytes_returned = 0; | |
6051 | FILE_UNIX_BASIC_INFO *data_offset; | |
6052 | __u16 params, param_offset, offset, count, byte_count; | |
6053 | ||
b6b38f70 | 6054 | cFYI(1, "In SetUID/GID/Mode"); |
1da177e4 LT |
6055 | setPermsRetry: |
6056 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6057 | (void **) &pSMBr); | |
6058 | if (rc) | |
6059 | return rc; | |
6060 | ||
6061 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6062 | name_len = | |
acbbb76a SF |
6063 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6064 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6065 | name_len++; /* trailing null */ |
6066 | name_len *= 2; | |
3e87d803 | 6067 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6068 | name_len = strnlen(fileName, PATH_MAX); |
6069 | name_len++; /* trailing null */ | |
6070 | strncpy(pSMB->FileName, fileName, name_len); | |
6071 | } | |
6072 | ||
6073 | params = 6 + name_len; | |
26f57364 | 6074 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 6075 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6076 | /* BB find max SMB PDU from sess structure BB */ |
6077 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6078 | pSMB->MaxSetupCount = 0; |
6079 | pSMB->Reserved = 0; | |
6080 | pSMB->Flags = 0; | |
6081 | pSMB->Timeout = 0; | |
6082 | pSMB->Reserved2 = 0; | |
6083 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6084 | InformationLevel) - 4; |
1da177e4 LT |
6085 | offset = param_offset + params; |
6086 | data_offset = | |
6087 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
6088 | offset); | |
6089 | memset(data_offset, 0, count); | |
6090 | pSMB->DataOffset = cpu_to_le16(offset); | |
6091 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6092 | pSMB->SetupCount = 1; | |
6093 | pSMB->Reserved3 = 0; | |
6094 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6095 | byte_count = 3 /* pad */ + params + count; | |
6096 | pSMB->ParameterCount = cpu_to_le16(params); | |
6097 | pSMB->DataCount = cpu_to_le16(count); | |
6098 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6099 | pSMB->TotalDataCount = pSMB->DataCount; | |
6100 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
6101 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6102 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 6103 | |
654cf14a | 6104 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
6105 | |
6106 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
6107 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6108 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6109 | if (rc) |
b6b38f70 | 6110 | cFYI(1, "SetPathInfo (perms) returned %d", rc); |
1da177e4 | 6111 | |
0d817bc0 | 6112 | cifs_buf_release(pSMB); |
1da177e4 LT |
6113 | if (rc == -EAGAIN) |
6114 | goto setPermsRetry; | |
6115 | return rc; | |
6116 | } | |
6117 | ||
1da177e4 | 6118 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
6119 | /* |
6120 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
6121 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
6122 | * it looks for that attribute name and stuffs that value into the EAData | |
6123 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
6124 | * buffer. In both cases, the return value is either the length of the | |
6125 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
6126 | * the data isn't copied to it, but the length is returned. | |
6127 | */ | |
1da177e4 | 6128 | ssize_t |
96daf2b0 | 6129 | CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon, |
31c0519f JL |
6130 | const unsigned char *searchName, const unsigned char *ea_name, |
6131 | char *EAData, size_t buf_size, | |
6132 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
6133 | { |
6134 | /* BB assumes one setup word */ | |
6135 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
6136 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
6137 | int rc = 0; | |
6138 | int bytes_returned; | |
6e462b9f | 6139 | int list_len; |
f0d3868b | 6140 | struct fealist *ea_response_data; |
50c2f753 SF |
6141 | struct fea *temp_fea; |
6142 | char *temp_ptr; | |
0cd126b5 | 6143 | char *end_of_smb; |
f0d3868b | 6144 | __u16 params, byte_count, data_offset; |
5980fc96 | 6145 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 6146 | |
b6b38f70 | 6147 | cFYI(1, "In Query All EAs path %s", searchName); |
1da177e4 LT |
6148 | QAllEAsRetry: |
6149 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6150 | (void **) &pSMBr); | |
6151 | if (rc) | |
6152 | return rc; | |
6153 | ||
6154 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 6155 | list_len = |
acbbb76a SF |
6156 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
6157 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
6158 | list_len++; /* trailing null */ |
6159 | list_len *= 2; | |
1da177e4 | 6160 | } else { /* BB improve the check for buffer overruns BB */ |
6e462b9f JL |
6161 | list_len = strnlen(searchName, PATH_MAX); |
6162 | list_len++; /* trailing null */ | |
6163 | strncpy(pSMB->FileName, searchName, list_len); | |
1da177e4 LT |
6164 | } |
6165 | ||
6e462b9f | 6166 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
6167 | pSMB->TotalDataCount = 0; |
6168 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 6169 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 6170 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
6171 | pSMB->MaxSetupCount = 0; |
6172 | pSMB->Reserved = 0; | |
6173 | pSMB->Flags = 0; | |
6174 | pSMB->Timeout = 0; | |
6175 | pSMB->Reserved2 = 0; | |
6176 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 6177 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
6178 | pSMB->DataCount = 0; |
6179 | pSMB->DataOffset = 0; | |
6180 | pSMB->SetupCount = 1; | |
6181 | pSMB->Reserved3 = 0; | |
6182 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
6183 | byte_count = params + 1 /* pad */ ; | |
6184 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
6185 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6186 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
6187 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6188 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6189 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6190 | ||
6191 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6192 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
6193 | if (rc) { | |
b6b38f70 | 6194 | cFYI(1, "Send error in QueryAllEAs = %d", rc); |
f0d3868b JL |
6195 | goto QAllEAsOut; |
6196 | } | |
1da177e4 | 6197 | |
f0d3868b JL |
6198 | |
6199 | /* BB also check enough total bytes returned */ | |
6200 | /* BB we need to improve the validity checking | |
6201 | of these trans2 responses */ | |
6202 | ||
6203 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 6204 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
6205 | rc = -EIO; /* bad smb */ |
6206 | goto QAllEAsOut; | |
6207 | } | |
6208 | ||
6209 | /* check that length of list is not more than bcc */ | |
6210 | /* check that each entry does not go beyond length | |
6211 | of list */ | |
6212 | /* check that each element of each entry does not | |
6213 | go beyond end of list */ | |
6214 | /* validate_trans2_offsets() */ | |
6215 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
6216 | ||
6217 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
6218 | ea_response_data = (struct fealist *) | |
6219 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
6220 | ||
6e462b9f | 6221 | list_len = le32_to_cpu(ea_response_data->list_len); |
b6b38f70 | 6222 | cFYI(1, "ea length %d", list_len); |
6e462b9f | 6223 | if (list_len <= 8) { |
b6b38f70 | 6224 | cFYI(1, "empty EA list returned from server"); |
f0d3868b JL |
6225 | goto QAllEAsOut; |
6226 | } | |
6227 | ||
0cd126b5 | 6228 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 6229 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 6230 | if ((char *)ea_response_data + list_len > end_of_smb) { |
b6b38f70 | 6231 | cFYI(1, "EA list appears to go beyond SMB"); |
0cd126b5 JL |
6232 | rc = -EIO; |
6233 | goto QAllEAsOut; | |
6234 | } | |
6235 | ||
f0d3868b | 6236 | /* account for ea list len */ |
6e462b9f | 6237 | list_len -= 4; |
f0d3868b JL |
6238 | temp_fea = ea_response_data->list; |
6239 | temp_ptr = (char *)temp_fea; | |
6e462b9f | 6240 | while (list_len > 0) { |
122ca007 | 6241 | unsigned int name_len; |
f0d3868b | 6242 | __u16 value_len; |
0cd126b5 | 6243 | |
6e462b9f | 6244 | list_len -= 4; |
f0d3868b | 6245 | temp_ptr += 4; |
0cd126b5 JL |
6246 | /* make sure we can read name_len and value_len */ |
6247 | if (list_len < 0) { | |
b6b38f70 | 6248 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6249 | rc = -EIO; |
6250 | goto QAllEAsOut; | |
6251 | } | |
6252 | ||
6253 | name_len = temp_fea->name_len; | |
6254 | value_len = le16_to_cpu(temp_fea->value_len); | |
6255 | list_len -= name_len + 1 + value_len; | |
6256 | if (list_len < 0) { | |
b6b38f70 | 6257 | cFYI(1, "EA entry goes beyond length of list"); |
0cd126b5 JL |
6258 | rc = -EIO; |
6259 | goto QAllEAsOut; | |
6260 | } | |
6261 | ||
31c0519f | 6262 | if (ea_name) { |
91d065c4 | 6263 | if (ea_name_len == name_len && |
ac423446 | 6264 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
6265 | temp_ptr += name_len + 1; |
6266 | rc = value_len; | |
6267 | if (buf_size == 0) | |
6268 | goto QAllEAsOut; | |
6269 | if ((size_t)value_len > buf_size) { | |
6270 | rc = -ERANGE; | |
6271 | goto QAllEAsOut; | |
6272 | } | |
6273 | memcpy(EAData, temp_ptr, value_len); | |
6274 | goto QAllEAsOut; | |
6275 | } | |
f0d3868b | 6276 | } else { |
31c0519f JL |
6277 | /* account for prefix user. and trailing null */ |
6278 | rc += (5 + 1 + name_len); | |
6279 | if (rc < (int) buf_size) { | |
6280 | memcpy(EAData, "user.", 5); | |
6281 | EAData += 5; | |
6282 | memcpy(EAData, temp_ptr, name_len); | |
6283 | EAData += name_len; | |
6284 | /* null terminate name */ | |
6285 | *EAData = 0; | |
6286 | ++EAData; | |
6287 | } else if (buf_size == 0) { | |
6288 | /* skip copy - calc size only */ | |
6289 | } else { | |
6290 | /* stop before overrun buffer */ | |
6291 | rc = -ERANGE; | |
6292 | break; | |
6293 | } | |
1da177e4 | 6294 | } |
0cd126b5 | 6295 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 6296 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 6297 | } |
f0d3868b | 6298 | |
31c0519f JL |
6299 | /* didn't find the named attribute */ |
6300 | if (ea_name) | |
6301 | rc = -ENODATA; | |
6302 | ||
f0d3868b | 6303 | QAllEAsOut: |
0d817bc0 | 6304 | cifs_buf_release(pSMB); |
1da177e4 LT |
6305 | if (rc == -EAGAIN) |
6306 | goto QAllEAsRetry; | |
6307 | ||
6308 | return (ssize_t)rc; | |
6309 | } | |
6310 | ||
1da177e4 | 6311 | int |
96daf2b0 | 6312 | CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName, |
50c2f753 SF |
6313 | const char *ea_name, const void *ea_value, |
6314 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
6315 | int remap) | |
1da177e4 LT |
6316 | { |
6317 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
6318 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
6319 | struct fealist *parm_data; | |
6320 | int name_len; | |
6321 | int rc = 0; | |
6322 | int bytes_returned = 0; | |
6323 | __u16 params, param_offset, byte_count, offset, count; | |
6324 | ||
b6b38f70 | 6325 | cFYI(1, "In SetEA"); |
1da177e4 LT |
6326 | SetEARetry: |
6327 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
6328 | (void **) &pSMBr); | |
6329 | if (rc) | |
6330 | return rc; | |
6331 | ||
6332 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6333 | name_len = | |
acbbb76a SF |
6334 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
6335 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
6336 | name_len++; /* trailing null */ |
6337 | name_len *= 2; | |
50c2f753 | 6338 | } else { /* BB improve the check for buffer overruns BB */ |
1da177e4 LT |
6339 | name_len = strnlen(fileName, PATH_MAX); |
6340 | name_len++; /* trailing null */ | |
6341 | strncpy(pSMB->FileName, fileName, name_len); | |
6342 | } | |
6343 | ||
6344 | params = 6 + name_len; | |
6345 | ||
6346 | /* done calculating parms using name_len of file name, | |
6347 | now use name_len to calculate length of ea name | |
6348 | we are going to create in the inode xattrs */ | |
790fe579 | 6349 | if (ea_name == NULL) |
1da177e4 LT |
6350 | name_len = 0; |
6351 | else | |
50c2f753 | 6352 | name_len = strnlen(ea_name, 255); |
1da177e4 | 6353 | |
dae5dbdb | 6354 | count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4 | 6355 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
6356 | /* BB find max SMB PDU from sess */ |
6357 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
6358 | pSMB->MaxSetupCount = 0; |
6359 | pSMB->Reserved = 0; | |
6360 | pSMB->Flags = 0; | |
6361 | pSMB->Timeout = 0; | |
6362 | pSMB->Reserved2 = 0; | |
6363 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 6364 | InformationLevel) - 4; |
1da177e4 LT |
6365 | offset = param_offset + params; |
6366 | pSMB->InformationLevel = | |
6367 | cpu_to_le16(SMB_SET_FILE_EA); | |
6368 | ||
6369 | parm_data = | |
6370 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
6371 | offset); | |
6372 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
6373 | pSMB->DataOffset = cpu_to_le16(offset); | |
6374 | pSMB->SetupCount = 1; | |
6375 | pSMB->Reserved3 = 0; | |
6376 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
6377 | byte_count = 3 /* pad */ + params + count; | |
6378 | pSMB->DataCount = cpu_to_le16(count); | |
6379 | parm_data->list_len = cpu_to_le32(count); | |
6380 | parm_data->list[0].EA_flags = 0; | |
6381 | /* we checked above that name len is less than 255 */ | |
53b3531b | 6382 | parm_data->list[0].name_len = (__u8)name_len; |
1da177e4 | 6383 | /* EA names are always ASCII */ |
790fe579 | 6384 | if (ea_name) |
50c2f753 | 6385 | strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4 LT |
6386 | parm_data->list[0].name[name_len] = 0; |
6387 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
6388 | /* caller ensures that ea_value_len is less than 64K but | |
6389 | we need to ensure that it fits within the smb */ | |
6390 | ||
50c2f753 SF |
6391 | /*BB add length check to see if it would fit in |
6392 | negotiated SMB buffer size BB */ | |
790fe579 SF |
6393 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
6394 | if (ea_value_len) | |
50c2f753 SF |
6395 | memcpy(parm_data->list[0].name+name_len+1, |
6396 | ea_value, ea_value_len); | |
1da177e4 LT |
6397 | |
6398 | pSMB->TotalDataCount = pSMB->DataCount; | |
6399 | pSMB->ParameterCount = cpu_to_le16(params); | |
6400 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
6401 | pSMB->Reserved4 = 0; | |
be8e3b00 | 6402 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
6403 | pSMB->ByteCount = cpu_to_le16(byte_count); |
6404 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6405 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 6406 | if (rc) |
b6b38f70 | 6407 | cFYI(1, "SetPathInfo (EA) returned %d", rc); |
1da177e4 LT |
6408 | |
6409 | cifs_buf_release(pSMB); | |
6410 | ||
6411 | if (rc == -EAGAIN) | |
6412 | goto SetEARetry; | |
6413 | ||
6414 | return rc; | |
6415 | } | |
1da177e4 | 6416 | #endif |
0eff0e26 SF |
6417 | |
6418 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ | |
6419 | /* | |
6420 | * Years ago the kernel added a "dnotify" function for Samba server, | |
6421 | * to allow network clients (such as Windows) to display updated | |
6422 | * lists of files in directory listings automatically when | |
6423 | * files are added by one user when another user has the | |
6424 | * same directory open on their desktop. The Linux cifs kernel | |
6425 | * client hooked into the kernel side of this interface for | |
6426 | * the same reason, but ironically when the VFS moved from | |
6427 | * "dnotify" to "inotify" it became harder to plug in Linux | |
6428 | * network file system clients (the most obvious use case | |
6429 | * for notify interfaces is when multiple users can update | |
6430 | * the contents of the same directory - exactly what network | |
6431 | * file systems can do) although the server (Samba) could | |
6432 | * still use it. For the short term we leave the worker | |
6433 | * function ifdeffed out (below) until inotify is fixed | |
6434 | * in the VFS to make it easier to plug in network file | |
6435 | * system clients. If inotify turns out to be permanently | |
6436 | * incompatible for network fs clients, we could instead simply | |
6437 | * expose this config flag by adding a future cifs (and smb2) notify ioctl. | |
6438 | */ | |
96daf2b0 | 6439 | int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, |
0eff0e26 SF |
6440 | const int notify_subdirs, const __u16 netfid, |
6441 | __u32 filter, struct file *pfile, int multishot, | |
6442 | const struct nls_table *nls_codepage) | |
6443 | { | |
6444 | int rc = 0; | |
6445 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
6446 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
6447 | struct dir_notify_req *dnotify_req; | |
6448 | int bytes_returned; | |
6449 | ||
6450 | cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid); | |
6451 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
6452 | (void **) &pSMBr); | |
6453 | if (rc) | |
6454 | return rc; | |
6455 | ||
6456 | pSMB->TotalParameterCount = 0 ; | |
6457 | pSMB->TotalDataCount = 0; | |
6458 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
c974befa | 6459 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e26 SF |
6460 | pSMB->MaxSetupCount = 4; |
6461 | pSMB->Reserved = 0; | |
6462 | pSMB->ParameterOffset = 0; | |
6463 | pSMB->DataCount = 0; | |
6464 | pSMB->DataOffset = 0; | |
6465 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
6466 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
6467 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
6468 | if (notify_subdirs) | |
6469 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
6470 | pSMB->Reserved2 = 0; | |
6471 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
6472 | pSMB->Fid = netfid; /* file handle always le */ | |
6473 | pSMB->ByteCount = 0; | |
6474 | ||
6475 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
6476 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
6477 | CIFS_ASYNC_OP); | |
6478 | if (rc) { | |
6479 | cFYI(1, "Error in Notify = %d", rc); | |
6480 | } else { | |
6481 | /* Add file to outstanding requests */ | |
6482 | /* BB change to kmem cache alloc */ | |
6483 | dnotify_req = kmalloc( | |
6484 | sizeof(struct dir_notify_req), | |
6485 | GFP_KERNEL); | |
6486 | if (dnotify_req) { | |
6487 | dnotify_req->Pid = pSMB->hdr.Pid; | |
6488 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
6489 | dnotify_req->Mid = pSMB->hdr.Mid; | |
6490 | dnotify_req->Tid = pSMB->hdr.Tid; | |
6491 | dnotify_req->Uid = pSMB->hdr.Uid; | |
6492 | dnotify_req->netfid = netfid; | |
6493 | dnotify_req->pfile = pfile; | |
6494 | dnotify_req->filter = filter; | |
6495 | dnotify_req->multishot = multishot; | |
6496 | spin_lock(&GlobalMid_Lock); | |
6497 | list_add_tail(&dnotify_req->lhead, | |
6498 | &GlobalDnotifyReqList); | |
6499 | spin_unlock(&GlobalMid_Lock); | |
6500 | } else | |
6501 | rc = -ENOMEM; | |
6502 | } | |
6503 | cifs_buf_release(pSMB); | |
6504 | return rc; | |
6505 | } | |
6506 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |